4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2010, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * lustre/mdt/mdt_handler.c
33 * Lustre Metadata Target (mdt) request handler
35 * Author: Peter Braam <braam@clusterfs.com>
36 * Author: Andreas Dilger <adilger@clusterfs.com>
37 * Author: Phil Schwan <phil@clusterfs.com>
38 * Author: Mike Shaver <shaver@clusterfs.com>
39 * Author: Nikita Danilov <nikita@clusterfs.com>
40 * Author: Huang Hua <huanghua@clusterfs.com>
41 * Author: Yury Umanets <umka@clusterfs.com>
44 #define DEBUG_SUBSYSTEM S_MDS
46 #include <linux/module.h>
47 #include <linux/pagemap.h>
49 #include <dt_object.h>
50 #include <lustre_acl.h>
51 #include <lustre_export.h>
52 #include <uapi/linux/lustre/lustre_ioctl.h>
53 #include <lustre_lfsck.h>
54 #include <lustre_log.h>
55 #include <lustre_nodemap.h>
56 #include <lustre_mds.h>
57 #include <uapi/linux/lustre/lustre_param.h>
58 #include <lustre_quota.h>
59 #include <lustre_swab.h>
60 #include <lustre_lmv.h>
62 #include <obd_support.h>
63 #include <lustre_barrier.h>
64 #include <obd_cksum.h>
65 #include <llog_swab.h>
66 #include <lustre_crypto.h>
68 #include "mdt_internal.h"
70 #if OBD_OCD_VERSION(3, 0, 53, 0) > LUSTRE_VERSION_CODE
71 static int mdt_max_mod_rpcs_per_client_set(const char *val,
72 cfs_kernel_param_arg_t *kp)
77 rc = kstrtouint(val, 0, &num);
81 if (num < 1 || num > OBD_MAX_RIF_MAX)
84 CWARN("max_mod_rpcs_per_client is deprecated, set mdt.*.max_mod_rpcs_in_flight parameter instead\n");
86 max_mod_rpcs_per_client = num;
89 static const struct kernel_param_ops
90 param_ops_max_mod_rpcs_per_client = {
91 .set = mdt_max_mod_rpcs_per_client_set,
92 .get = param_get_uint,
95 #define param_check_max_mod_rpcs_per_client(name, p) \
96 __param_check(name, p, unsigned int)
98 module_param_cb(max_mod_rpcs_per_client,
99 ¶m_ops_max_mod_rpcs_per_client,
100 &max_mod_rpcs_per_client, 0644);
102 MODULE_PARM_DESC(max_mod_rpcs_per_client,
103 "maximum number of modify RPCs in flight allowed per client (Deprecated)");
106 mdl_mode_t mdt_mdl_lock_modes[] = {
107 [LCK_MINMODE] = MDL_MINMODE,
114 [LCK_GROUP] = MDL_GROUP
117 enum ldlm_mode mdt_dlm_lock_modes[] = {
118 [MDL_MINMODE] = LCK_MINMODE,
125 [MDL_GROUP] = LCK_GROUP
128 static struct mdt_device *mdt_dev(struct lu_device *d);
130 static const struct lu_object_operations mdt_obj_ops;
132 /* Slab for MDT object allocation */
133 static struct kmem_cache *mdt_object_kmem;
135 /* For HSM restore handles */
136 struct kmem_cache *mdt_hsm_cdt_kmem;
138 /* For HSM request handles */
139 struct kmem_cache *mdt_hsm_car_kmem;
141 static struct lu_kmem_descr mdt_caches[] = {
143 .ckd_cache = &mdt_object_kmem,
144 .ckd_name = "mdt_obj",
145 .ckd_size = sizeof(struct mdt_object)
148 .ckd_cache = &mdt_hsm_cdt_kmem,
149 .ckd_name = "mdt_cdt_restore_handle",
150 .ckd_size = sizeof(struct cdt_restore_handle)
153 .ckd_cache = &mdt_hsm_car_kmem,
154 .ckd_name = "mdt_cdt_agent_req",
155 .ckd_size = sizeof(struct cdt_agent_req)
162 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag)
166 return rep->lock_policy_res1 & op_flag;
169 void mdt_clear_disposition(struct mdt_thread_info *info,
170 struct ldlm_reply *rep, __u64 op_flag)
173 info->mti_opdata &= ~op_flag;
174 tgt_opdata_clear(info->mti_env, op_flag);
177 rep->lock_policy_res1 &= ~op_flag;
180 void mdt_set_disposition(struct mdt_thread_info *info,
181 struct ldlm_reply *rep, __u64 op_flag)
184 info->mti_opdata |= op_flag;
185 tgt_opdata_set(info->mti_env, op_flag);
188 rep->lock_policy_res1 |= op_flag;
191 /* assert lock is unlocked before reuse */
192 static inline void mdt_lock_handle_assert(struct mdt_lock_handle *lh)
194 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
195 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
196 LASSERT(!lustre_handle_is_used(&lh->mlh_rreg_lh));
199 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm)
201 mdt_lock_handle_assert(lh);
202 lh->mlh_pdo_hash = 0;
203 lh->mlh_reg_mode = lm;
204 lh->mlh_rreg_mode = lm;
205 lh->mlh_type = MDT_REG_LOCK;
208 void mdt_lh_reg_init(struct mdt_lock_handle *lh, struct ldlm_lock *lock)
210 mdt_lock_reg_init(lh, lock->l_req_mode);
211 if (lock->l_req_mode == LCK_GROUP)
212 lh->mlh_gid = lock->l_policy_data.l_inodebits.li_gid;
215 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
216 const struct lu_name *lname)
218 mdt_lock_handle_assert(lh);
219 lh->mlh_reg_mode = lock_mode;
220 lh->mlh_pdo_mode = LCK_MINMODE;
221 lh->mlh_rreg_mode = lock_mode;
222 lh->mlh_type = MDT_PDO_LOCK;
224 if (lu_name_is_valid(lname)) {
225 lh->mlh_pdo_hash = ll_full_name_hash(NULL, lname->ln_name,
227 /* XXX Workaround for LU-2856
229 * Zero is a valid return value of full_name_hash, but several
230 * users of mlh_pdo_hash assume a non-zero hash value. We
231 * therefore map zero onto an arbitrary, but consistent
232 * value (1) to avoid problems further down the road.
234 if (unlikely(lh->mlh_pdo_hash == 0))
235 lh->mlh_pdo_hash = 1;
237 lh->mlh_pdo_hash = 0;
241 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
242 struct mdt_lock_handle *lh)
249 * Any dir access needs couple of locks:
251 * 1) on part of dir we gonna take lookup/modify;
253 * 2) on whole dir to protect it from concurrent splitting and/or to
254 * flush client's cache for readdir().
256 * so, for a given mode and object this routine decides what lock mode
257 * to use for lock #2:
259 * 1) if caller's gonna lookup in dir then we need to protect dir from
260 * being splitted only - LCK_CR
262 * 2) if caller's gonna modify dir then we need to protect dir from
263 * being splitted and to flush cache - LCK_CW
265 * 3) if caller's gonna modify dir and that dir seems ready for
266 * splitting then we need to protect it from any type of access
267 * (lookup/modify/split) - LCK_EX --bzzz
270 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
271 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
274 * Ask underlaying level its opinion about preferable PDO lock mode
275 * having access type passed as regular lock mode:
277 * - MDL_MINMODE means that lower layer does not want to specify lock
280 * - MDL_NL means that no PDO lock should be taken. This is used in some
281 * cases. Say, for non-splittable directories no need to use PDO locks
284 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
285 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
287 if (mode != MDL_MINMODE) {
288 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
291 * Lower layer does not want to specify locking mode. We do it
292 * our selves. No special protection is needed, just flush
293 * client's cache on modification and allow concurrent
296 switch (lh->mlh_reg_mode) {
298 lh->mlh_pdo_mode = LCK_EX;
301 lh->mlh_pdo_mode = LCK_CR;
304 lh->mlh_pdo_mode = LCK_CW;
307 CERROR("Not expected lock type (0x%x)\n",
308 (int)lh->mlh_reg_mode);
313 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
318 * Check whether \a o is directory stripe object.
320 * \param[in] info thread environment
321 * \param[in] o MDT object
323 * \retval 1 is directory stripe.
324 * \retval 0 isn't directory stripe.
325 * \retval < 1 error code
327 static int mdt_is_dir_stripe(struct mdt_thread_info *info,
328 struct mdt_object *o)
330 struct md_attr *ma = &info->mti_attr;
331 struct lmv_mds_md_v1 *lmv;
334 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
338 if (!(ma->ma_valid & MA_LMV))
341 lmv = &ma->ma_lmv->lmv_md_v1;
343 if (!lmv_is_sane2(lmv))
346 if (le32_to_cpu(lmv->lmv_magic) == LMV_MAGIC_STRIPE)
352 static int mdt_lookup_fileset(struct mdt_thread_info *info, const char *fileset,
355 struct mdt_device *mdt = info->mti_mdt;
356 struct lu_name *lname = &info->mti_name;
357 const char *start = fileset;
358 char *filename = info->mti_filename;
359 struct mdt_object *obj;
362 LASSERT(!info->mti_cross_ref);
365 * We may want to allow this to mount a completely separate
366 * fileset from the MDT in the future, but keeping it to
367 * ROOT/ only for now avoid potential security issues.
369 *fid = mdt->mdt_md_root_fid;
371 while (rc == 0 && start != NULL && *start != '\0') {
372 const char *s1 = start;
378 while (*s2 != '/' && *s2 != '\0')
386 lname->ln_namelen = s2 - s1;
387 if (lname->ln_namelen > NAME_MAX) {
392 /* reject .. as a path component */
393 if (lname->ln_namelen == 2 && strncmp(s1, "..", 2) == 0) {
398 strncpy(filename, s1, lname->ln_namelen);
399 filename[lname->ln_namelen] = '\0';
400 lname->ln_name = filename;
402 obj = mdt_object_find(info->mti_env, mdt, fid);
407 /* Only got the fid of this obj by name */
409 rc = mdo_lookup(info->mti_env, mdt_object_child(obj), lname,
410 fid, &info->mti_spec);
411 if (!rc && !S_ISDIR(lu_object_attr(&obj->mot_obj)))
413 mdt_object_put(info->mti_env, obj);
419 static int mdt_get_root(struct tgt_session_info *tsi)
421 struct mdt_thread_info *info = tsi2mdt_info(tsi);
422 struct mdt_device *mdt = info->mti_mdt;
423 struct mdt_body *repbody;
424 char *fileset = NULL, *buffer = NULL;
426 struct obd_export *exp = info->mti_exp;
427 char *nodemap_fileset;
431 rc = mdt_check_ucred(info);
433 GOTO(out, rc = err_serious(rc));
435 if (CFS_FAIL_CHECK(OBD_FAIL_MDS_GET_ROOT_PACK))
436 GOTO(out, rc = err_serious(-ENOMEM));
438 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
439 if (req_capsule_get_size(info->mti_pill, &RMF_NAME, RCL_CLIENT) > 0) {
440 fileset = req_capsule_client_get(info->mti_pill, &RMF_NAME);
442 GOTO(out, rc = err_serious(-EFAULT));
445 nodemap_fileset = nodemap_get_fileset(exp->exp_target_data.ted_nodemap);
446 if (nodemap_fileset && nodemap_fileset[0]) {
447 CDEBUG(D_INFO, "nodemap fileset is %s\n", nodemap_fileset);
449 /* consider fileset from client as a sub-fileset
452 OBD_ALLOC(buffer, PATH_MAX + 1);
454 GOTO(out, rc = err_serious(-ENOMEM));
455 if (snprintf(buffer, PATH_MAX + 1, "%s/%s",
456 nodemap_fileset, fileset) >= PATH_MAX + 1)
457 GOTO(out, rc = err_serious(-EINVAL));
460 /* enforce fileset as specified in the nodemap */
461 fileset = nodemap_fileset;
466 CDEBUG(D_INFO, "Getting fileset %s\n", fileset);
467 rc = mdt_lookup_fileset(info, fileset, &repbody->mbo_fid1);
469 GOTO(out, rc = err_serious(rc));
471 repbody->mbo_fid1 = mdt->mdt_md_root_fid;
473 exp->exp_root_fid = repbody->mbo_fid1;
474 repbody->mbo_valid |= OBD_MD_FLID;
478 mdt_thread_info_fini(info);
480 OBD_FREE(buffer, PATH_MAX+1);
484 static int mdt_statfs(struct tgt_session_info *tsi)
486 struct ptlrpc_request *req = tgt_ses_req(tsi);
487 struct mdt_thread_info *info = tsi2mdt_info(tsi);
488 struct mdt_device *mdt = info->mti_mdt;
489 struct tg_grants_data *tgd = &mdt->mdt_lut.lut_tgd;
490 struct md_device *next = mdt->mdt_child;
491 struct ptlrpc_service_part *svcpt;
492 struct obd_statfs *osfs;
493 struct mdt_body *reqbody = NULL;
494 struct mdt_statfs_cache *msf;
495 ktime_t kstart = ktime_get();
496 int current_blockbits;
502 svcpt = req->rq_rqbd->rqbd_svcpt;
504 /* This will trigger a watchdog timeout */
505 at_est = obd_at_get(mdt->mdt_lu_dev.ld_obd, &svcpt->scp_at_estimate);
506 CFS_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
507 (MDT_SERVICE_WATCHDOG_FACTOR * at_est) + 1);
509 rc = mdt_check_ucred(info);
511 GOTO(out, rc = err_serious(rc));
513 if (CFS_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
514 GOTO(out, rc = err_serious(-ENOMEM));
516 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
518 GOTO(out, rc = -EPROTO);
520 if (mdt_is_sum_statfs_client(req->rq_export) &&
521 lustre_packed_msg_size(req->rq_reqmsg) ==
522 req_capsule_fmt_size(req->rq_reqmsg->lm_magic,
523 &RQF_MDS_STATFS_NEW, RCL_CLIENT)) {
524 req_capsule_extend(info->mti_pill, &RQF_MDS_STATFS_NEW);
525 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
528 if (reqbody && reqbody->mbo_valid & OBD_MD_FLAGSTATFS)
529 msf = &mdt->mdt_sum_osfs;
531 msf = &mdt->mdt_osfs;
533 if (msf->msf_age + OBD_STATFS_CACHE_SECONDS <= ktime_get_seconds()) {
534 /** statfs data is too old, get up-to-date one */
535 if (reqbody && reqbody->mbo_valid & OBD_MD_FLAGSTATFS)
536 rc = next->md_ops->mdo_statfs(info->mti_env, next,
539 rc = dt_statfs(info->mti_env, mdt->mdt_bottom, osfs);
542 spin_lock(&mdt->mdt_lock);
543 msf->msf_osfs = *osfs;
544 msf->msf_age = ktime_get_seconds();
545 spin_unlock(&mdt->mdt_lock);
547 /** use cached statfs data */
548 spin_lock(&mdt->mdt_lock);
549 *osfs = msf->msf_osfs;
550 spin_unlock(&mdt->mdt_lock);
553 /* tgd_blockbit is recordsize bits set during mkfs.
554 * This once set does not change. However, 'zfs set'
555 * can be used to change the MDT blocksize. Instead
556 * of using cached value of 'tgd_blockbit' always
557 * calculate the blocksize bits which may have
560 current_blockbits = fls64(osfs->os_bsize) - 1;
562 /* Account for cached pages. its still racy and might be under-reporting
563 * if clients haven't announced their caches with brw recently
565 CDEBUG(D_SUPER | D_CACHE, "blocks cached %llu granted %llu pending %llu free %llu avail %llu\n",
566 tgd->tgd_tot_dirty, tgd->tgd_tot_granted,
567 tgd->tgd_tot_pending,
568 osfs->os_bfree << current_blockbits,
569 osfs->os_bavail << current_blockbits);
571 osfs->os_bavail -= min_t(u64, osfs->os_bavail,
572 ((tgd->tgd_tot_dirty + tgd->tgd_tot_pending +
573 osfs->os_bsize - 1) >> current_blockbits));
575 tgt_grant_sanity_check(mdt->mdt_lu_dev.ld_obd, __func__);
576 if (mdt->mdt_lut.lut_no_create)
577 osfs->os_state |= OS_STATFS_NOCREATE;
578 CDEBUG(D_CACHE, "%llu blocks: %llu free, %llu avail; "
579 "%llu objects: %llu free; state %x\n",
580 osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
581 osfs->os_files, osfs->os_ffree, osfs->os_state);
583 if (!exp_grant_param_supp(tsi->tsi_exp) &&
584 current_blockbits > COMPAT_BSIZE_SHIFT) {
585 /* clients which don't support OBD_CONNECT_GRANT_PARAM
586 * should not see a block size > page size, otherwise
587 * cl_lost_grant goes mad. Therefore, we emulate a 4KB (=2^12)
588 * block size which is the biggest block size known to work
589 * with all client's page size.
591 osfs->os_blocks <<= current_blockbits - COMPAT_BSIZE_SHIFT;
592 osfs->os_bfree <<= current_blockbits - COMPAT_BSIZE_SHIFT;
593 osfs->os_bavail <<= current_blockbits - COMPAT_BSIZE_SHIFT;
594 osfs->os_bsize = 1 << COMPAT_BSIZE_SHIFT;
597 mdt_counter_incr(req, LPROC_MDT_STATFS,
598 ktime_us_delta(ktime_get(), kstart));
600 mdt_thread_info_fini(info);
604 __u32 mdt_lmm_dom_entry_check(struct lov_mds_md *lmm, int *is_dom_only)
606 struct lov_comp_md_v1 *comp_v1;
607 struct lov_mds_md *v1;
609 __u32 dom_stripesize = 0;
611 bool has_ost_stripes = false;
618 if (le32_to_cpu(lmm->lmm_magic) != LOV_MAGIC_COMP_V1)
621 comp_v1 = (struct lov_comp_md_v1 *)lmm;
622 off = le32_to_cpu(comp_v1->lcm_entries[0].lcme_offset);
623 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
625 /* Fast check for DoM entry with no mirroring, should be the first */
626 if (le16_to_cpu(comp_v1->lcm_mirror_count) == 0 &&
627 !(lov_pattern(le32_to_cpu(v1->lmm_pattern)) & LOV_PATTERN_MDT))
630 /* check all entries otherwise */
631 for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
632 struct lov_comp_md_entry_v1 *lcme;
634 lcme = &comp_v1->lcm_entries[i];
635 if (!(le32_to_cpu(lcme->lcme_flags) & LCME_FL_INIT))
638 off = le32_to_cpu(lcme->lcme_offset);
639 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
641 if (lov_pattern(le32_to_cpu(v1->lmm_pattern)) &
643 dom_stripesize = le32_to_cpu(v1->lmm_stripe_size);
645 has_ost_stripes = true;
647 if (dom_stripesize && has_ost_stripes)
648 RETURN(dom_stripesize);
650 /* DoM-only case exits here */
651 if (is_dom_only && dom_stripesize)
653 RETURN(dom_stripesize);
656 /* Pack size attributes into the reply. */
657 int mdt_pack_size2body(struct mdt_thread_info *info,
658 const struct lu_fid *fid, struct lustre_handle *lh)
661 struct md_attr *ma = &info->mti_attr;
663 bool dom_lock = false;
667 LASSERT(ma->ma_attr.la_valid & LA_MODE);
669 if (!S_ISREG(ma->ma_attr.la_mode) ||
670 !(ma->ma_valid & MA_LOV && ma->ma_lmm != NULL))
673 dom_stripe = mdt_lmm_dom_stripesize(ma->ma_lmm);
674 /* no DoM stripe, no size in reply */
678 if (lustre_handle_is_used(lh)) {
679 struct ldlm_lock *lock;
681 lock = ldlm_handle2lock(lh);
683 dom_lock = ldlm_has_dom(lock);
688 /* no DoM lock, no size in reply */
692 /* Either DoM lock exists or LMM has only DoM stripe then
693 * return size on body.
695 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
697 mdt_dom_object_size(info->mti_env, info->mti_mdt, fid, b, dom_lock);
701 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
703 * Pack ACL data into the reply. UIDs/GIDs are mapped and filtered by nodemap.
705 * \param info thread info object
706 * \param repbody reply to pack ACLs into
707 * \param o mdt object of file to examine
708 * \param nodemap nodemap of client to reply to
710 * \retval -errno error getting or parsing ACL from disk
712 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
713 struct mdt_object *o, struct lu_nodemap *nodemap)
715 const struct lu_env *env = info->mti_env;
716 struct md_object *next = mdt_object_child(o);
717 struct lu_buf *buf = &info->mti_buf;
718 struct mdt_device *mdt = info->mti_mdt;
719 struct req_capsule *pill = info->mti_pill;
724 buf->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
725 buf->lb_len = req_capsule_get_size(pill, &RMF_ACL, RCL_SERVER);
726 if (buf->lb_len == 0)
729 LASSERT(!info->mti_big_acl_used);
731 rc = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_ACCESS);
733 if (rc == -ENODATA) {
734 repbody->mbo_aclsize = 0;
735 repbody->mbo_valid |= OBD_MD_FLACL;
737 } else if (rc == -EOPNOTSUPP) {
739 } else if (rc == -ERANGE) {
740 if (exp_connect_large_acl(info->mti_exp) &&
741 !info->mti_big_acl_used) {
742 if (info->mti_big_acl == NULL) {
743 info->mti_big_aclsize =
745 mdt->mdt_max_ea_size,
747 OBD_ALLOC_LARGE(info->mti_big_acl,
748 info->mti_big_aclsize);
749 if (info->mti_big_acl == NULL) {
750 info->mti_big_aclsize = 0;
751 CERROR("%s: unable to grow "
754 PFID(mdt_object_fid(o)));
759 CDEBUG(D_INODE, "%s: grow the "DFID
760 " ACL buffer to size %d\n",
762 PFID(mdt_object_fid(o)),
763 info->mti_big_aclsize);
765 buf->lb_buf = info->mti_big_acl;
766 buf->lb_len = info->mti_big_aclsize;
767 info->mti_big_acl_used = 1;
770 /* FS has ACL bigger that our limits */
771 CDEBUG(D_INODE, "%s: "DFID" ACL can't fit into %d\n",
772 mdt_obd_name(mdt), PFID(mdt_object_fid(o)),
773 info->mti_big_aclsize);
776 CERROR("%s: unable to read "DFID" ACL: rc = %d\n",
777 mdt_obd_name(mdt), PFID(mdt_object_fid(o)), rc);
780 rc = nodemap_map_acl(nodemap, buf->lb_buf,
781 rc, NODEMAP_FS_TO_CLIENT);
782 /* if all ACLs mapped out, rc is still >= 0 */
784 CERROR("%s: nodemap_map_acl unable to parse "DFID
785 " ACL: rc = %d\n", mdt_obd_name(mdt),
786 PFID(mdt_object_fid(o)), rc);
787 repbody->mbo_aclsize = 0;
788 repbody->mbo_valid &= ~OBD_MD_FLACL;
790 repbody->mbo_aclsize = rc;
791 repbody->mbo_valid |= OBD_MD_FLACL;
800 /* XXX Look into layout in MDT layer. */
801 static inline bool mdt_hsm_is_released(struct lov_mds_md *lmm)
803 struct lov_comp_md_v1 *comp_v1;
804 struct lov_mds_md *v1;
807 if (lmm->lmm_magic == LOV_MAGIC_COMP_V1) {
808 comp_v1 = (struct lov_comp_md_v1 *)lmm;
810 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
811 v1 = (struct lov_mds_md *)((char *)comp_v1 +
812 comp_v1->lcm_entries[i].lcme_offset);
813 /* We don't support partial release for now */
814 if (!(v1->lmm_pattern & LOV_PATTERN_F_RELEASED))
819 return (lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) ?
824 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
825 const struct lu_attr *attr, const struct lu_fid *fid)
827 struct mdt_device *mdt = info->mti_mdt;
828 struct obd_export *exp = info->mti_exp;
829 struct md_attr *ma = &info->mti_attr;
830 struct lu_nodemap *nodemap = NULL;
832 LASSERT(ma->ma_valid & MA_INODE);
834 if (attr->la_valid & LA_ATIME) {
835 b->mbo_atime = attr->la_atime;
836 b->mbo_valid |= OBD_MD_FLATIME;
838 if (attr->la_valid & LA_MTIME) {
839 b->mbo_mtime = attr->la_mtime;
840 b->mbo_valid |= OBD_MD_FLMTIME;
842 if (attr->la_valid & LA_CTIME) {
843 b->mbo_ctime = attr->la_ctime;
844 b->mbo_valid |= OBD_MD_FLCTIME;
846 if (attr->la_valid & LA_BTIME) {
847 b->mbo_btime = attr->la_btime;
848 b->mbo_valid |= OBD_MD_FLBTIME;
850 if (attr->la_valid & LA_FLAGS) {
851 b->mbo_flags = attr->la_flags;
852 b->mbo_valid |= OBD_MD_FLFLAGS;
854 if (attr->la_valid & LA_NLINK) {
855 b->mbo_nlink = attr->la_nlink;
856 b->mbo_valid |= OBD_MD_FLNLINK;
858 if (attr->la_valid & (LA_UID|LA_GID|LA_PROJID)) {
859 nodemap = nodemap_get_from_exp(exp);
863 if (attr->la_valid & LA_UID) {
864 b->mbo_uid = nodemap_map_id(nodemap, NODEMAP_UID,
865 NODEMAP_FS_TO_CLIENT,
867 b->mbo_valid |= OBD_MD_FLUID;
869 if (attr->la_valid & LA_GID) {
870 b->mbo_gid = nodemap_map_id(nodemap, NODEMAP_GID,
871 NODEMAP_FS_TO_CLIENT,
873 b->mbo_valid |= OBD_MD_FLGID;
876 if (attr->la_valid & LA_PROJID) {
877 b->mbo_projid = nodemap_map_id(nodemap, NODEMAP_PROJID,
878 NODEMAP_FS_TO_CLIENT,
880 b->mbo_valid |= OBD_MD_FLPROJID;
883 b->mbo_mode = attr->la_mode;
884 if (attr->la_valid & LA_MODE)
885 b->mbo_valid |= OBD_MD_FLMODE;
886 if (attr->la_valid & LA_TYPE)
887 b->mbo_valid |= OBD_MD_FLTYPE;
891 b->mbo_valid |= OBD_MD_FLID;
892 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, valid=%#llx\n",
893 PFID(fid), b->mbo_nlink, b->mbo_mode, b->mbo_valid);
896 if (!(attr->la_valid & LA_TYPE))
899 b->mbo_rdev = attr->la_rdev;
900 b->mbo_size = attr->la_size;
901 b->mbo_blocks = attr->la_blocks;
903 if (!S_ISREG(attr->la_mode)) {
904 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
905 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
906 /* means no objects are allocated on osts. */
907 LASSERT(!(ma->ma_valid & MA_LOV));
908 /* just ignore blocks occupied by extend attributes on MDS */
910 /* if no object is allocated on osts, the size on mds is valid.
913 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
914 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL) {
915 if (mdt_hsm_is_released(ma->ma_lmm)) {
916 /* A released file stores its size on MDS. */
917 /* But return 1 block for released file, unless tools
918 * like tar will consider it fully sparse. (LU-3864)
920 if (unlikely(b->mbo_size == 0))
924 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
925 } else if (info->mti_som_strict && mdt->mdt_enable_strict_som) {
926 /* use SOM for size*/
927 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
928 } else if (ma->ma_valid & MA_SOM) { /* lsom is valid */
929 b->mbo_valid |= OBD_MD_FLLAZYSIZE | OBD_MD_FLLAZYBLOCKS;
930 b->mbo_size = ma->ma_som.ms_size;
931 b->mbo_blocks = ma->ma_som.ms_blocks;
935 if (fid != NULL && (b->mbo_valid & OBD_MD_FLSIZE ||
936 b->mbo_valid & OBD_MD_FLLAZYSIZE))
937 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
938 PFID(fid), (unsigned long long)b->mbo_size);
941 if (!IS_ERR_OR_NULL(nodemap))
942 nodemap_putref(nodemap);
945 static inline int mdt_body_has_lov(const struct lu_attr *la,
946 const struct mdt_body *body)
948 return (S_ISREG(la->la_mode) && (body->mbo_valid & OBD_MD_FLEASIZE)) ||
949 (S_ISDIR(la->la_mode) && (body->mbo_valid & OBD_MD_FLDIREA));
952 void mdt_client_compatibility(struct mdt_thread_info *info)
954 struct mdt_body *body;
955 struct ptlrpc_request *req = mdt_info_req(info);
956 struct obd_export *exp = req->rq_export;
957 struct md_attr *ma = &info->mti_attr;
958 struct lu_attr *la = &ma->ma_attr;
962 if (exp_connect_layout(exp))
963 /* the client can deal with 16-bit lmm_stripe_count */
966 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
968 if (!mdt_body_has_lov(la, body))
971 /* now we have a reply with a lov for a client not compatible with the
972 * layout lock so we have to clean the layout generation number
974 if (S_ISREG(la->la_mode))
975 ma->ma_lmm->lmm_layout_gen = 0;
979 static int mdt_attr_get_eabuf_size(struct mdt_thread_info *info,
980 struct mdt_object *o)
982 const struct lu_env *env = info->mti_env;
985 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
994 /* Is it a directory? Let's check for the LMV as well */
995 if (S_ISDIR(lu_object_attr(&mdt_object_child(o)->mo_lu))) {
996 rc2 = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
1000 rc2 = mo_xattr_get(env, mdt_object_child(o),
1002 XATTR_NAME_DEFAULT_LMV);
1004 if ((rc2 < 0 && rc2 != -ENODATA) || (rc2 > rc))
1012 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
1015 const struct lu_env *env = info->mti_env;
1020 LASSERT(info->mti_big_lmm_used == 0);
1021 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
1025 /* big_lmm may need to be grown */
1026 if (info->mti_big_lmmsize < rc) {
1027 int size = size_roundup_power2(rc);
1029 if (info->mti_big_lmmsize > 0) {
1030 /* free old buffer */
1031 LASSERT(info->mti_big_lmm);
1032 OBD_FREE_LARGE(info->mti_big_lmm,
1033 info->mti_big_lmmsize);
1034 info->mti_big_lmm = NULL;
1035 info->mti_big_lmmsize = 0;
1038 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
1039 if (info->mti_big_lmm == NULL)
1041 info->mti_big_lmmsize = size;
1043 LASSERT(info->mti_big_lmmsize >= rc);
1045 info->mti_buf.lb_buf = info->mti_big_lmm;
1046 info->mti_buf.lb_len = info->mti_big_lmmsize;
1047 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
1052 int __mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
1053 struct md_attr *ma, const char *name)
1055 struct md_object *next = mdt_object_child(o);
1056 struct lu_buf *buf = &info->mti_buf;
1059 if (strcmp(name, XATTR_NAME_LOV) == 0) {
1060 buf->lb_buf = ma->ma_lmm;
1061 buf->lb_len = ma->ma_lmm_size;
1062 LASSERT(!(ma->ma_valid & MA_LOV));
1063 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
1064 buf->lb_buf = ma->ma_lmv;
1065 buf->lb_len = ma->ma_lmv_size;
1066 LASSERT(!(ma->ma_valid & MA_LMV));
1067 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
1068 buf->lb_buf = ma->ma_default_lmv;
1069 buf->lb_len = ma->ma_default_lmv_size;
1070 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
1075 LASSERT(buf->lb_buf);
1077 if (!mdt_object_exists(o))
1080 if (mdt_object_remote(o) && S_ISDIR(lu_object_attr(&o->mot_obj)))
1081 /* force reload layout for remote dir in case layout changed */
1082 mo_invalidate(info->mti_env, mdt_object_child(o));
1084 rc = mo_xattr_get(info->mti_env, next, buf, name);
1088 if (strcmp(name, XATTR_NAME_LOV) == 0) {
1089 if (info->mti_big_lmm_used)
1090 ma->ma_lmm = info->mti_big_lmm;
1092 /* NOT return LOV EA with hole to old client. */
1093 if (unlikely(le32_to_cpu(ma->ma_lmm->lmm_pattern) &
1094 LOV_PATTERN_F_HOLE) &&
1095 !(exp_connect_flags(info->mti_exp) &
1096 OBD_CONNECT_LFSCK)) {
1099 ma->ma_lmm_size = rc;
1100 ma->ma_valid |= MA_LOV;
1101 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
1102 if (info->mti_big_lmm_used)
1103 ma->ma_lmv = info->mti_big_lmm;
1105 ma->ma_lmv_size = rc;
1106 ma->ma_valid |= MA_LMV;
1107 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
1108 ma->ma_default_lmv_size = rc;
1109 ma->ma_valid |= MA_LMV_DEF;
1112 /* Update mdt_max_mdsize so all clients will be aware that */
1113 if (info->mti_mdt->mdt_max_mdsize < rc)
1114 info->mti_mdt->mdt_max_mdsize = rc;
1117 } else if (rc == -ENODATA) {
1120 } else if (rc == -ERANGE) {
1121 /* Default LMV has fixed size, so it must be able to fit
1122 * in the original buffer
1124 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
1126 rc = mdt_big_xattr_get(info, o, name);
1128 info->mti_big_lmm_used = 1;
1136 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
1137 struct md_attr *ma, const char *name)
1141 if (!info->mti_big_lmm) {
1142 OBD_ALLOC(info->mti_big_lmm, PAGE_SIZE);
1143 if (!info->mti_big_lmm)
1145 info->mti_big_lmmsize = PAGE_SIZE;
1148 if (strcmp(name, XATTR_NAME_LOV) == 0) {
1149 ma->ma_lmm = info->mti_big_lmm;
1150 ma->ma_lmm_size = info->mti_big_lmmsize;
1151 ma->ma_valid &= ~MA_LOV;
1152 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
1153 ma->ma_lmv = info->mti_big_lmm;
1154 ma->ma_lmv_size = info->mti_big_lmmsize;
1155 ma->ma_valid &= ~MA_LMV;
1160 LASSERT(!info->mti_big_lmm_used);
1161 rc = __mdt_stripe_get(info, o, ma, name);
1162 /* since big_lmm is always used here, clear 'used' flag to avoid
1163 * assertion in mdt_big_xattr_get().
1165 info->mti_big_lmm_used = 0;
1170 int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
1171 struct lu_fid *pfid)
1173 struct lu_buf *buf = &info->mti_buf;
1174 struct link_ea_header *leh;
1175 struct link_ea_entry *lee;
1180 buf->lb_buf = info->mti_big_lmm;
1181 buf->lb_len = info->mti_big_lmmsize;
1182 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
1183 buf, XATTR_NAME_LINK);
1184 /* ignore errors, MA_PFID won't be set and it is
1185 * up to the caller to treat this as an error
1187 if (rc == -ERANGE || buf->lb_len == 0) {
1188 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
1189 buf->lb_buf = info->mti_big_lmm;
1190 buf->lb_len = info->mti_big_lmmsize;
1195 if (rc < sizeof(*leh)) {
1196 CERROR("short LinkEA on "DFID": rc = %d\n",
1197 PFID(mdt_object_fid(o)), rc);
1201 leh = (struct link_ea_header *) buf->lb_buf;
1202 lee = (struct link_ea_entry *)(leh + 1);
1203 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
1204 leh->leh_magic = LINK_EA_MAGIC;
1205 leh->leh_reccount = __swab32(leh->leh_reccount);
1206 leh->leh_len = __swab64(leh->leh_len);
1208 if (leh->leh_magic != LINK_EA_MAGIC)
1210 if (leh->leh_reccount == 0)
1213 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
1214 fid_be_to_cpu(pfid, pfid);
1219 int mdt_attr_get_pfid_name(struct mdt_thread_info *info, struct mdt_object *o,
1220 struct lu_fid *pfid, struct lu_name *lname)
1222 struct lu_buf *buf = &info->mti_buf;
1223 struct link_ea_header *leh;
1224 struct link_ea_entry *lee;
1228 buf->lb_buf = info->mti_xattr_buf;
1229 buf->lb_len = sizeof(info->mti_xattr_buf);
1230 rc = mo_xattr_get(info->mti_env, mdt_object_child(o), buf,
1232 if (rc == -ERANGE) {
1233 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
1234 buf->lb_buf = info->mti_big_lmm;
1235 buf->lb_len = info->mti_big_lmmsize;
1240 if (rc < sizeof(*leh)) {
1241 CERROR("short LinkEA on "DFID": rc = %d\n",
1242 PFID(mdt_object_fid(o)), rc);
1246 leh = (struct link_ea_header *)buf->lb_buf;
1247 lee = (struct link_ea_entry *)(leh + 1);
1248 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
1249 leh->leh_magic = LINK_EA_MAGIC;
1250 leh->leh_reccount = __swab32(leh->leh_reccount);
1251 leh->leh_len = __swab64(leh->leh_len);
1253 if (leh->leh_magic != LINK_EA_MAGIC)
1256 if (leh->leh_reccount == 0)
1259 linkea_entry_unpack(lee, &reclen, lname, pfid);
1264 int mdt_attr_get_complex(struct mdt_thread_info *info,
1265 struct mdt_object *o, struct md_attr *ma)
1267 const struct lu_env *env = info->mti_env;
1268 struct md_object *next = mdt_object_child(o);
1269 struct lu_buf *buf = &info->mti_buf;
1270 int need = ma->ma_need;
1278 if (mdt_object_exists(o) == 0)
1279 GOTO(out, rc = -ENOENT);
1280 mode = lu_object_attr(&next->mo_lu);
1282 if (need & MA_INODE) {
1283 ma->ma_need = MA_INODE;
1284 if (need & MA_DIRENT_CNT)
1285 ma->ma_attr.la_valid |= LA_DIRENT_CNT;
1287 ma->ma_attr.la_valid &= ~LA_DIRENT_CNT;
1288 rc = mo_attr_get(env, next, ma);
1293 (void) mdt_get_som(info, o, ma);
1294 ma->ma_valid |= MA_INODE;
1297 if (need & MA_PFID) {
1298 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
1300 ma->ma_valid |= MA_PFID;
1301 /* ignore this error, parent fid is not mandatory */
1305 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
1306 rc = __mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
1311 if (need & MA_LMV && S_ISDIR(mode)) {
1312 rc = __mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
1317 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
1318 rc = __mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
1323 /* In the handle of MA_INODE, we may already get the SOM attr. */
1324 if (need & MA_SOM && S_ISREG(mode) && !(ma->ma_valid & MA_SOM)) {
1325 rc = mdt_get_som(info, o, ma);
1330 if (need & MA_HSM && S_ISREG(mode)) {
1331 buf->lb_buf = info->mti_xattr_buf;
1332 buf->lb_len = sizeof(info->mti_xattr_buf);
1333 BUILD_BUG_ON(sizeof(struct hsm_attrs) >
1334 sizeof(info->mti_xattr_buf));
1335 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
1336 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
1338 ma->ma_valid |= MA_HSM;
1339 else if (rc2 < 0 && rc2 != -ENODATA)
1340 GOTO(out, rc = rc2);
1343 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
1344 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
1345 buf->lb_buf = ma->ma_acl;
1346 buf->lb_len = ma->ma_acl_size;
1347 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
1349 ma->ma_acl_size = rc2;
1350 ma->ma_valid |= MA_ACL_DEF;
1351 } else if (rc2 == -ENODATA) {
1353 ma->ma_acl_size = 0;
1355 GOTO(out, rc = rc2);
1360 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = %#llx ma_lmm=%p\n",
1361 rc, ma->ma_valid, ma->ma_lmm);
1365 static void mdt_preset_encctx_size(struct mdt_thread_info *info)
1367 struct req_capsule *pill = info->mti_pill;
1370 if (req_capsule_has_field(pill, &RMF_FILE_ENCCTX,
1372 /* pre-set size in server part with max size */
1373 req_capsule_set_size(pill, &RMF_FILE_ENCCTX,
1375 info->mti_mdt->mdt_max_mdsize);
1379 static int mdt_getattr_internal(struct mdt_thread_info *info,
1380 struct mdt_object *o, int ma_need)
1382 struct mdt_device *mdt = info->mti_mdt;
1383 struct md_object *next = mdt_object_child(o);
1384 const struct mdt_body *reqbody = info->mti_body;
1385 struct ptlrpc_request *req = mdt_info_req(info);
1386 struct md_attr *ma = &info->mti_attr;
1387 struct lu_attr *la = &ma->ma_attr;
1388 struct req_capsule *pill = info->mti_pill;
1389 const struct lu_env *env = info->mti_env;
1390 struct mdt_body *repbody;
1391 struct lu_buf *buffer = &info->mti_buf;
1392 struct obd_export *exp = info->mti_exp;
1393 ktime_t kstart = ktime_get();
1398 if (CFS_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
1399 RETURN(err_serious(-ENOMEM));
1401 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1405 if (mdt_object_remote(o)) {
1406 /* obj is located on remote node Return -ENOTSUPP(old client) */
1407 if (!mdt_is_dne_client(req->rq_export))
1408 GOTO(out, rc = -ENOTSUPP);
1410 repbody->mbo_fid1 = *mdt_object_fid(o);
1411 repbody->mbo_valid = OBD_MD_FLID | OBD_MD_MDS;
1415 if (reqbody->mbo_eadatasize > 0) {
1416 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
1417 if (buffer->lb_buf == NULL)
1418 GOTO(out, rc = -EPROTO);
1419 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD,
1422 buffer->lb_buf = NULL;
1424 ma_need &= ~(MA_LOV | MA_LMV);
1425 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
1426 mdt_obd_name(info->mti_mdt),
1427 req->rq_export->exp_client_uuid.uuid);
1430 /* from 2.12.58 intent_getattr pack default LMV in reply */
1431 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1432 ((reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA)) ==
1433 (OBD_MD_MEA | OBD_MD_DEFAULT_MEA)) &&
1434 req_capsule_has_field(&req->rq_pill, &RMF_DEFAULT_MDT_MD,
1436 ma->ma_lmv = buffer->lb_buf;
1437 ma->ma_lmv_size = buffer->lb_len;
1438 ma->ma_default_lmv = req_capsule_server_get(pill,
1439 &RMF_DEFAULT_MDT_MD);
1440 ma->ma_default_lmv_size = req_capsule_get_size(pill,
1441 &RMF_DEFAULT_MDT_MD,
1443 ma->ma_need = MA_INODE;
1444 if (ma->ma_lmv_size > 0)
1445 ma->ma_need |= MA_LMV;
1446 if (ma->ma_default_lmv_size > 0)
1447 ma->ma_need |= MA_LMV_DEF;
1448 } else if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1449 (reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
1450 /* If it is dir and client require MEA, then we got MEA */
1451 /* Assumption: MDT_MD size is enough for lmv size. */
1452 ma->ma_lmv = buffer->lb_buf;
1453 ma->ma_lmv_size = buffer->lb_len;
1454 ma->ma_need = MA_INODE;
1455 if (ma->ma_lmv_size > 0) {
1456 if (reqbody->mbo_valid & OBD_MD_MEA) {
1457 ma->ma_need |= MA_LMV;
1458 } else if (reqbody->mbo_valid & OBD_MD_DEFAULT_MEA) {
1459 ma->ma_need |= MA_LMV_DEF;
1460 ma->ma_default_lmv = buffer->lb_buf;
1462 ma->ma_default_lmv_size = buffer->lb_len;
1463 ma->ma_lmv_size = 0;
1467 ma->ma_lmm = buffer->lb_buf;
1468 ma->ma_lmm_size = buffer->lb_len;
1469 ma->ma_need = MA_INODE | MA_HSM;
1470 if (ma->ma_lmm_size > 0) {
1471 ma->ma_need |= MA_LOV;
1472 /* Older clients may crash if they getattr overstriped
1475 if (!exp_connect_overstriping(exp) &&
1476 mdt_lmm_is_overstriping(ma->ma_lmm))
1477 RETURN(-EOPNOTSUPP);
1481 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1482 reqbody->mbo_valid & OBD_MD_FLDIREA &&
1483 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
1484 /* get default stripe info for this dir. */
1485 ma->ma_need |= MA_LOV_DEF;
1487 ma->ma_need |= ma_need;
1489 rc = mdt_attr_get_complex(info, o, ma);
1491 CDEBUG_LIMIT(rc == -ENOENT ? D_OTHER : D_ERROR,
1492 "%s: getattr error for "DFID": rc = %d\n",
1493 mdt_obd_name(info->mti_mdt),
1494 PFID(mdt_object_fid(o)), rc);
1498 /* return immutable attr on fscrypt metadata files
1499 * if fscrypt admin is not permitted
1501 if (o->mot_obj.lo_header->loh_attr & LOHA_FSCRYPT_MD &&
1502 !mdt_ucred(info)->uc_rbac_fscrypt_admin)
1503 la->la_flags |= LUSTRE_IMMUTABLE_FL;
1505 /* if file is released, check if a restore is running */
1506 if (ma->ma_valid & MA_HSM) {
1507 repbody->mbo_valid |= OBD_MD_TSTATE;
1508 if ((ma->ma_hsm.mh_flags & HS_RELEASED) &&
1509 mdt_hsm_restore_is_running(info, mdt_object_fid(o)))
1510 repbody->mbo_t_state = MS_RESTORE;
1513 if (unlikely(!(ma->ma_valid & MA_INODE)))
1516 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
1518 if (mdt_body_has_lov(la, reqbody)) {
1519 u32 stripe_count = 1;
1520 bool fixed_layout = false;
1522 if (ma->ma_valid & MA_LOV) {
1523 LASSERT(ma->ma_lmm_size);
1524 repbody->mbo_eadatasize = ma->ma_lmm_size;
1525 if (S_ISDIR(la->la_mode))
1526 repbody->mbo_valid |= OBD_MD_FLDIREA;
1528 repbody->mbo_valid |= OBD_MD_FLEASIZE;
1529 mdt_dump_lmm(D_INFO, ma->ma_lmm, repbody->mbo_valid);
1531 if (ma->ma_valid & MA_LMV) {
1532 struct lmv_mds_md_v1 *lmv = &ma->ma_lmv->lmv_md_v1;
1533 u32 magic = le32_to_cpu(lmv->lmv_magic);
1535 /* Return -ENOTSUPP for old client */
1536 if (!mdt_is_striped_client(req->rq_export))
1539 LASSERT(S_ISDIR(la->la_mode));
1540 mdt_dump_lmv(D_INFO, ma->ma_lmv);
1541 repbody->mbo_eadatasize = ma->ma_lmv_size;
1542 repbody->mbo_valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
1544 stripe_count = le32_to_cpu(lmv->lmv_stripe_count);
1545 fixed_layout = lmv_is_fixed(lmv);
1546 if (magic == LMV_MAGIC_STRIPE && lmv_is_restriping(lmv))
1547 mdt_restripe_migrate_add(info, o);
1548 else if (magic == LMV_MAGIC_V1 &&
1549 lmv_is_restriping(lmv))
1550 mdt_restripe_update_add(info, o);
1552 if (ma->ma_valid & MA_LMV_DEF) {
1553 /* Return -ENOTSUPP for old client */
1554 if (!mdt_is_striped_client(req->rq_export))
1556 LASSERT(S_ISDIR(la->la_mode));
1558 * when ll_dir_getstripe() gets default LMV, it
1559 * checks mbo_eadatasize.
1561 if (!(ma->ma_valid & MA_LMV))
1562 repbody->mbo_eadatasize =
1563 ma->ma_default_lmv_size;
1564 repbody->mbo_valid |= (OBD_MD_FLDIREA |
1565 OBD_MD_DEFAULT_MEA);
1568 "dirent count %llu stripe count %u MDT count %d\n",
1569 ma->ma_attr.la_dirent_count, stripe_count,
1570 atomic_read(&mdt->mdt_mds_mds_conns) + 1);
1571 if (ma->ma_attr.la_dirent_count != LU_DIRENT_COUNT_UNSET &&
1572 ma->ma_attr.la_dirent_count >
1573 mdt->mdt_restriper.mdr_dir_split_count &&
1574 !fid_is_root(mdt_object_fid(o)) &&
1575 mdt->mdt_enable_dir_auto_split &&
1576 !o->mot_restriping &&
1577 stripe_count < atomic_read(&mdt->mdt_mds_mds_conns) + 1 &&
1579 mdt_auto_split_add(info, o);
1580 } else if (S_ISLNK(la->la_mode) &&
1581 reqbody->mbo_valid & OBD_MD_LINKNAME) {
1582 buffer->lb_buf = ma->ma_lmm;
1583 /* eadatasize from client includes NULL-terminator, so
1584 * there is no need to read it
1586 buffer->lb_len = reqbody->mbo_eadatasize - 1;
1587 rc = mo_readlink(env, next, buffer);
1588 if (unlikely(rc <= 0)) {
1589 CERROR("%s: readlink failed for "DFID": rc = %d\n",
1590 mdt_obd_name(info->mti_mdt),
1591 PFID(mdt_object_fid(o)), rc);
1594 int print_limit = min_t(int, PAGE_SIZE - 128, rc);
1596 if (CFS_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
1598 repbody->mbo_valid |= OBD_MD_LINKNAME;
1599 /* we need to report back size with NULL-terminator
1600 * because client expects that
1602 repbody->mbo_eadatasize = rc + 1;
1603 if (repbody->mbo_eadatasize != reqbody->mbo_eadatasize)
1604 CDEBUG(D_INODE, "%s: Read shorter symlink %d on "
1605 DFID ", expected %d\n",
1606 mdt_obd_name(info->mti_mdt),
1607 rc, PFID(mdt_object_fid(o)),
1608 reqbody->mbo_eadatasize - 1);
1609 /* NULL terminate */
1610 ((char *)ma->ma_lmm)[rc] = 0;
1612 /* If the total CDEBUG() size is larger than a page, it
1613 * will print a warning to the console, avoid this by
1614 * printing just the last part of the symlink.
1616 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
1617 print_limit < rc ? "..." : "", print_limit,
1618 (char *)ma->ma_lmm + rc - print_limit, rc);
1623 if (reqbody->mbo_valid & OBD_MD_FLMODEASIZE) {
1624 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
1625 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
1626 CDEBUG(D_INODE, "changing the max MD size to %u\n",
1627 repbody->mbo_max_mdsize);
1630 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
1631 if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
1632 (reqbody->mbo_valid & OBD_MD_FLACL)) {
1633 struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
1635 if (IS_ERR(nodemap))
1636 RETURN(PTR_ERR(nodemap));
1638 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
1639 nodemap_putref(nodemap);
1645 mdt_counter_incr(req, LPROC_MDT_GETATTR,
1646 ktime_us_delta(ktime_get(), kstart));
1651 static int mdt_getattr(struct tgt_session_info *tsi)
1653 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1654 struct mdt_object *obj = info->mti_object;
1655 struct req_capsule *pill = info->mti_pill;
1656 struct mdt_body *reqbody;
1657 struct mdt_body *repbody;
1662 if (unlikely(info->mti_object == NULL))
1665 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1667 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1669 /* Special case for Data-on-MDT files to get data version */
1670 if (unlikely(reqbody->mbo_valid & OBD_MD_FLDATAVERSION)) {
1671 rc = mdt_data_version_get(tsi);
1675 /* Unlike intent case where we need to pre-fill out buffers early on
1676 * in intent policy for ldlm reasons, here we can have a much better
1677 * guess at EA size by just reading it from disk.
1678 * Exceptions are readdir and (missing) directory striping
1680 if (reqbody->mbo_valid & OBD_MD_LINKNAME) { /* Readlink */
1681 /* No easy way to know how long is the symlink, but it cannot
1682 * be more than PATH_MAX, so we allocate +1
1685 /* A special case for fs ROOT: getattr there might fetch
1686 * default EA for entire fs, not just for this dir!
1688 } else if (lu_fid_eq(mdt_object_fid(obj),
1689 &info->mti_mdt->mdt_md_root_fid) &&
1690 (reqbody->mbo_valid & OBD_MD_FLDIREA) &&
1691 (lustre_msg_get_opc(mdt_info_req(info)->rq_reqmsg) ==
1693 /* Should the default strping be bigger, mdt_fix_reply
1696 rc = DEF_REP_MD_SIZE;
1698 /* Read the actual EA size from disk */
1699 rc = mdt_attr_get_eabuf_size(info, obj);
1703 GOTO(out, rc = err_serious(rc));
1705 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, rc);
1707 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
1708 * by default. If the target object has more ACL entries, then
1709 * enlarge the buffer when necessary.
1711 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
1712 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
1713 mdt_preset_encctx_size(info);
1715 rc = req_capsule_server_pack(pill);
1716 if (unlikely(rc != 0))
1717 GOTO(out, rc = err_serious(rc));
1719 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1720 LASSERT(repbody != NULL);
1721 repbody->mbo_eadatasize = 0;
1722 repbody->mbo_aclsize = 0;
1724 rc = mdt_check_ucred(info);
1726 GOTO(out_shrink, rc);
1728 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1730 rc = mdt_init_ucred(info, reqbody);
1732 GOTO(out_shrink, rc);
1734 rc = mdt_getattr_internal(info, obj, 0);
1736 GOTO(out_ucred, rc);
1738 rc = mdt_pack_encctx_in_reply(info, obj);
1741 mdt_exit_ucred(info);
1743 mdt_client_compatibility(info);
1744 rc2 = mdt_fix_reply(info);
1748 mdt_thread_info_fini(info);
1753 * Handler of layout intent RPC requiring the layout modification
1755 * \param[in] info thread environment
1756 * \param[in] obj object
1757 * \param[out] lhc object ldlm lock handle
1758 * \param[in] layout layout change descriptor
1760 * \retval 0 on success
1761 * \retval < 0 error code
1763 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
1764 struct mdt_lock_handle *lhc,
1765 struct md_layout_change *layout)
1771 if (!mdt_object_exists(obj))
1774 if (!S_ISREG(lu_object_attr(&obj->mot_obj)))
1777 rc = mo_permission(info->mti_env, NULL, mdt_object_child(obj), NULL,
1782 rc = mdt_check_resent_lock(info, obj, lhc);
1788 __u64 lockpart = MDS_INODELOCK_LAYOUT;
1790 /* take layout lock to prepare layout change */
1791 if (layout->mlc_opc == MD_LAYOUT_WRITE)
1792 lockpart |= MDS_INODELOCK_UPDATE;
1794 rc = mdt_object_lock(info, obj, lhc, lockpart, LCK_EX);
1799 mutex_lock(&obj->mot_som_mutex);
1800 rc = mo_layout_change(info->mti_env, mdt_object_child(obj), layout);
1801 mutex_unlock(&obj->mot_som_mutex);
1804 mdt_object_unlock(info, obj, lhc, 1);
1810 * Exchange MOF_LOV_CREATED flags between two objects after a
1811 * layout swap. No assumption is made on whether o1 or o2 have
1812 * created objects or not.
1814 * \param[in,out] o1 First swap layout object
1815 * \param[in,out] o2 Second swap layout object
1817 static void mdt_swap_lov_flag(struct mdt_object *o1, struct mdt_object *o2)
1819 unsigned int o1_lov_created = o1->mot_lov_created;
1821 mutex_lock(&o1->mot_lov_mutex);
1822 mutex_lock(&o2->mot_lov_mutex);
1824 o1->mot_lov_created = o2->mot_lov_created;
1825 o2->mot_lov_created = o1_lov_created;
1827 mutex_unlock(&o2->mot_lov_mutex);
1828 mutex_unlock(&o1->mot_lov_mutex);
1831 static int mdt_swap_layouts(struct tgt_session_info *tsi)
1833 struct mdt_thread_info *info;
1834 struct ptlrpc_request *req = tgt_ses_req(tsi);
1835 struct obd_export *exp = req->rq_export;
1836 struct mdt_object *o1, *o2, *o;
1837 struct mdt_lock_handle *lh1, *lh2;
1838 struct mdc_swap_layouts *msl;
1843 /* client does not support layout lock, so layout swaping
1845 * FIXME: there is a problem for old clients which don't support
1846 * layout lock yet. If those clients have already opened the file
1847 * they won't be notified at all so that old layout may still be
1848 * used to do IO. This can be fixed after file release is landed by
1849 * doing exclusive open and taking full EX ibits lock. - Jinshan
1851 if (!exp_connect_layout(exp))
1852 RETURN(-EOPNOTSUPP);
1854 info = tsi2mdt_info(tsi);
1855 if (unlikely(info->mti_object == NULL))
1858 if (info->mti_dlm_req != NULL)
1859 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
1861 o1 = info->mti_object;
1862 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1863 &info->mti_body->mbo_fid2);
1865 GOTO(out, rc = PTR_ERR(o));
1867 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1868 GOTO(put, rc = -ENOENT);
1870 rc = lu_fid_cmp(&info->mti_body->mbo_fid1, &info->mti_body->mbo_fid2);
1871 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1877 /* permission check. Make sure the calling process having permission
1878 * to write both files.
1880 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1885 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1890 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1892 GOTO(put, rc = -EPROTO);
1894 lh1 = &info->mti_lh[MDT_LH_NEW];
1895 lh2 = &info->mti_lh[MDT_LH_OLD];
1896 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1897 MDS_INODELOCK_XATTR, LCK_EX);
1901 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1902 MDS_INODELOCK_XATTR, LCK_EX);
1906 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1907 mdt_object_child(o2), 0, 0, msl->msl_flags);
1911 mdt_swap_lov_flag(o1, o2);
1914 mdt_object_unlock(info, o2, lh2, rc);
1916 mdt_object_unlock(info, o1, lh1, rc);
1918 mdt_object_put(info->mti_env, o);
1920 mdt_thread_info_fini(info);
1924 static int mdt_raw_lookup(struct mdt_thread_info *info,
1925 struct mdt_object *parent,
1926 const struct lu_name *lname)
1928 struct lu_fid *fid = &info->mti_tmp_fid1;
1929 struct mdt_body *repbody;
1930 bool is_dotdot = false;
1931 bool is_old_parent_stripe = false;
1932 bool is_new_parent_checked = false;
1937 LASSERT(!info->mti_cross_ref);
1938 /* Always allow to lookup ".." */
1939 if (lname->ln_namelen == 2 &&
1940 lname->ln_name[0] == '.' && lname->ln_name[1] == '.') {
1941 info->mti_spec.sp_permitted = 1;
1943 if (mdt_is_dir_stripe(info, parent) == 1)
1944 is_old_parent_stripe = true;
1947 mdt_object_get(info->mti_env, parent);
1949 /* Only got the fid of this obj by name */
1951 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname, fid,
1953 mdt_object_put(info->mti_env, parent);
1957 /* getattr_name("..") should return master object FID for striped dir */
1958 if (is_dotdot && (is_old_parent_stripe || !is_new_parent_checked)) {
1959 parent = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1961 RETURN(PTR_ERR(parent));
1963 /* old client getattr_name("..") with stripe FID */
1964 if (unlikely(is_old_parent_stripe)) {
1965 is_old_parent_stripe = false;
1969 /* ".." may be a stripe */
1970 if (unlikely(mdt_is_dir_stripe(info, parent) == 1)) {
1971 is_new_parent_checked = true;
1975 mdt_object_put(info->mti_env, parent);
1978 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1979 repbody->mbo_fid1 = *fid;
1980 repbody->mbo_valid = OBD_MD_FLID;
1986 * Find name matching hash
1988 * We search \a child LinkEA for a name whose hash matches \a lname
1989 * (it contains an encoded hash).
1991 * \param info mdt thread info
1992 * \param lname encoded hash to find
1993 * \param parent parent object
1994 * \param child object to search with LinkEA
1996 * \retval 1 match found
1997 * \retval 0 no match found
1998 * \retval -ev negative errno upon error
2000 int find_name_matching_hash(struct mdt_thread_info *info, struct lu_name *lname,
2001 struct mdt_object *parent, struct mdt_object *child)
2003 /* Here, lname is an encoded hash of on-disk name, and
2004 * client is doing access without encryption key.
2005 * So we need to get LinkEA, check parent fid is correct and
2006 * compare name hash with the one in the request.
2008 struct lu_buf *buf = &info->mti_big_buf;
2009 struct lu_name name;
2011 struct linkea_data ldata = { NULL };
2012 struct link_ea_header *leh;
2013 struct link_ea_entry *lee;
2014 struct lu_buf link = { 0 };
2016 int reclen, count, rc;
2019 if (lname->ln_namelen < LL_CRYPTO_BLOCK_SIZE)
2022 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
2027 rc = mdt_links_read(info, child, &ldata);
2031 hash = kmalloc(lname->ln_namelen, GFP_NOFS);
2034 rc = critical_decode(lname->ln_name, lname->ln_namelen, hash);
2037 lee = (struct link_ea_entry *)(leh + 1);
2038 for (count = 0; count < leh->leh_reccount; count++) {
2039 linkea_entry_unpack(lee, &reclen, &name, &pfid);
2040 if (!parent || lu_fid_eq(&pfid, mdt_object_fid(parent))) {
2041 lu_buf_check_and_alloc(&link, name.ln_namelen);
2043 GOTO(out_match, rc = -ENOMEM);
2044 rc = critical_decode(name.ln_name, name.ln_namelen,
2047 if (memcmp(LLCRYPT_EXTRACT_DIGEST(link.lb_buf, rc),
2048 hash, LL_CRYPTO_BLOCK_SIZE) == 0) {
2053 lee = (struct link_ea_entry *) ((char *)lee + reclen);
2055 if (count == leh->leh_reccount)
2068 * UPDATE lock should be taken against parent, and be released before exit;
2069 * child_bits lock should be taken against child, and be returned back:
2070 * (1)normal request should release the child lock;
2071 * (2)intent request will grant the lock to client.
2073 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
2074 struct mdt_lock_handle *lhc,
2076 struct ldlm_reply *ldlm_rep)
2078 struct ptlrpc_request *req = mdt_info_req(info);
2079 struct mdt_body *reqbody = NULL;
2080 struct mdt_object *parent = info->mti_object;
2081 struct mdt_object *child = NULL;
2082 struct lu_fid *child_fid = &info->mti_tmp_fid1;
2083 struct lu_name *lname = NULL;
2084 struct mdt_lock_handle *lhp = NULL;
2085 struct ldlm_lock *lock;
2086 struct req_capsule *pill = info->mti_pill;
2087 bool fscrypt_md = false;
2095 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
2096 LASSERT(ergo(is_resent,
2097 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
2102 if (info->mti_mdt->mdt_enable_dir_auto_split)
2103 ma_need |= MA_DIRENT_CNT;
2105 if (info->mti_cross_ref) {
2106 /* Only getattr on the child. Parent is on another node. */
2107 mdt_set_disposition(info, ldlm_rep,
2108 DISP_LOOKUP_EXECD | DISP_LOOKUP_POS);
2110 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", ldlm_rep = %p\n",
2111 PFID(mdt_object_fid(child)), ldlm_rep);
2113 rc = mdt_check_resent_lock(info, child, lhc);
2116 } else if (rc > 0) {
2118 * Object's name entry is on another MDS, it will
2119 * request PERM lock only because LOOKUP lock is owned
2120 * by the MDS where name entry resides.
2122 * TODO: it should try layout lock too. - Jinshan
2124 child_bits &= ~(MDS_INODELOCK_LOOKUP |
2125 MDS_INODELOCK_LAYOUT);
2126 child_bits |= MDS_INODELOCK_PERM;
2127 rc = mdt_object_lock(info, child, lhc, child_bits,
2133 /* Finally, we can get attr for child. */
2134 if (!mdt_object_exists(child)) {
2135 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
2137 "remote object doesn't exist.");
2138 mdt_object_unlock(info, child, lhc, 1);
2142 rc = mdt_getattr_internal(info, child, ma_need);
2143 if (unlikely(rc != 0)) {
2144 mdt_object_unlock(info, child, lhc, 1);
2148 rc = mdt_pack_secctx_in_reply(info, child);
2150 mdt_object_unlock(info, child, lhc, 1);
2154 rc = mdt_pack_encctx_in_reply(info, child);
2156 mdt_object_unlock(info, child, lhc, 1);
2160 lname = &info->mti_name;
2161 mdt_name_unpack(pill, &RMF_NAME, lname, MNF_FIX_ANON);
2163 if (info->mti_body->mbo_valid & OBD_MD_NAMEHASH) {
2164 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
2165 if (unlikely(reqbody == NULL))
2166 RETURN(err_serious(-EPROTO));
2168 *child_fid = reqbody->mbo_fid2;
2169 if (unlikely(!fid_is_sane(child_fid)))
2170 RETURN(err_serious(-EINVAL));
2172 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
2173 mdt_object_get(info->mti_env, parent);
2176 child = mdt_object_find(info->mti_env, info->mti_mdt,
2179 RETURN(PTR_ERR(child));
2182 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", ldlm_rep = %p\n",
2183 PFID(mdt_object_fid(parent)),
2184 PFID(&reqbody->mbo_fid2), ldlm_rep);
2185 } else if (lu_name_is_valid(lname)) {
2186 if (mdt_object_remote(parent)) {
2187 CERROR("%s: parent "DFID" is on remote target\n",
2188 mdt_obd_name(info->mti_mdt),
2189 PFID(mdt_object_fid(parent)));
2193 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", ldlm_rep = %p\n",
2194 PFID(mdt_object_fid(parent)),
2195 PNAME(lname), ldlm_rep);
2197 if (parent->mot_obj.lo_header->loh_attr & LOHA_FSCRYPT_MD ||
2198 (fid_is_root(mdt_object_fid(parent)) &&
2199 lname->ln_namelen == strlen(dot_fscrypt_name) &&
2200 strncmp(lname->ln_name, dot_fscrypt_name,
2201 lname->ln_namelen) == 0))
2204 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
2205 if (unlikely(reqbody == NULL))
2206 RETURN(err_serious(-EPROTO));
2208 *child_fid = reqbody->mbo_fid2;
2209 if (unlikely(!fid_is_sane(child_fid)))
2210 RETURN(err_serious(-EINVAL));
2212 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
2213 mdt_object_get(info->mti_env, parent);
2216 child = mdt_object_find(info->mti_env, info->mti_mdt,
2219 RETURN(PTR_ERR(child));
2222 if (mdt_object_remote(child)) {
2223 CERROR("%s: child "DFID" is on remote target\n",
2224 mdt_obd_name(info->mti_mdt),
2225 PFID(mdt_object_fid(child)));
2226 GOTO(out_child, rc = -EPROTO);
2229 /* don't fetch LOOKUP lock if it's remote object */
2230 rc = mdt_is_remote_object(info, parent, child);
2232 GOTO(out_child, rc);
2234 child_bits &= ~MDS_INODELOCK_LOOKUP;
2236 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", ldlm_rep = %p\n",
2237 PFID(mdt_object_fid(parent)),
2238 PFID(&reqbody->mbo_fid2), ldlm_rep);
2241 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
2243 if (unlikely(!mdt_object_exists(parent)) &&
2244 !(info->mti_body->mbo_valid & OBD_MD_NAMEHASH) &&
2245 lu_name_is_valid(lname)) {
2246 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
2248 "Parent doesn't exist!");
2249 GOTO(out_child, rc = -ESTALE);
2252 if (!child && is_resent) {
2253 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
2255 /* Lock is pinned by ldlm_handle_enqueue0() as it is
2256 * a resend case, however, it could be already destroyed
2257 * due to client eviction or a raced cancel RPC.
2259 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx",
2260 lhc->mlh_reg_lh.cookie);
2263 fid_extract_from_res_name(child_fid,
2264 &lock->l_resource->lr_name);
2265 LDLM_LOCK_PUT(lock);
2266 child = mdt_object_find(info->mti_env, info->mti_mdt,
2269 RETURN(PTR_ERR(child));
2270 } else if (!(info->mti_body->mbo_valid & OBD_MD_NAMEHASH) &&
2271 lu_name_is_valid(lname)) {
2272 if (info->mti_body->mbo_valid == OBD_MD_FLID) {
2273 rc = mdt_raw_lookup(info, parent, lname);
2278 /* step 1: lock parent only if parent is a directory */
2279 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
2280 lhp = &info->mti_lh[MDT_LH_PARENT];
2281 rc = mdt_parent_lock(info, parent, lhp, lname, LCK_PR);
2282 if (unlikely(rc != 0))
2286 /* step 2: lookup child's fid by name */
2287 fid_zero(child_fid);
2288 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
2289 child_fid, &info->mti_spec);
2291 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
2294 GOTO(unlock_parent, rc);
2296 child = mdt_object_find(info->mti_env, info->mti_mdt,
2298 if (unlikely(IS_ERR(child)))
2299 GOTO(unlock_parent, rc = PTR_ERR(child));
2302 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
2304 /* step 3: lock child regardless if it is local or remote. */
2307 if (info->mti_body->mbo_valid & OBD_MD_NAMEHASH) {
2308 /* Here, lname is an encoded hash of on-disk name, and
2309 * client is doing access without encryption key.
2310 * So we need to compare name hash with the one in the request.
2312 if (!find_name_matching_hash(info, lname, parent,
2314 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
2315 mdt_clear_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
2316 GOTO(out_child, rc = -ENOENT);
2320 CFS_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout * 2);
2321 if (!mdt_object_exists(child)) {
2322 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
2324 "Object doesn't exist!");
2325 GOTO(out_child, rc = -ENOENT);
2328 rc = mdt_check_resent_lock(info, child, lhc);
2330 GOTO(out_child, rc);
2331 } else if (rc > 0) {
2332 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
2333 !mdt_object_remote(child)) {
2334 struct md_attr *ma = &info->mti_attr;
2337 ma->ma_need = MA_INODE;
2338 rc = mdt_attr_get_complex(info, child, ma);
2339 if (unlikely(rc != 0))
2340 GOTO(out_child, rc);
2342 /* If the file has not been changed for some time, we
2343 * return not only a LOOKUP lock, but also an UPDATE
2344 * lock and this might save us RPC on later STAT. For
2345 * directories, it also let negative dentry cache start
2346 * working for this dir.
2348 if (ma->ma_valid & MA_INODE &&
2349 ma->ma_attr.la_valid & LA_CTIME &&
2350 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
2351 ma->ma_attr.la_ctime < ktime_get_real_seconds())
2352 child_bits |= MDS_INODELOCK_UPDATE;
2355 /* layout lock must be granted in a best-effort way
2358 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
2359 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
2360 !mdt_object_remote(child) && ldlm_rep != NULL) {
2361 if (!CFS_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
2362 exp_connect_layout(info->mti_exp)) {
2363 /* try to grant layout lock for regular file. */
2364 try_bits = MDS_INODELOCK_LAYOUT;
2366 /* Acquire DOM lock in advance for data-on-mdt file */
2367 if (child != parent)
2368 try_bits |= MDS_INODELOCK_DOM;
2372 * To avoid possible deadlock between batched statahead RPC
2373 * and rename()/migrate() operation, it should use trylock to
2374 * obtain the DLM PR ibits lock for file attributes in a
2375 * batched statahead RPC. A failed trylock means that other
2376 * users maybe modify the directory simultaneously as in current
2377 * Lustre design the server only grants read lock to a client.
2379 * When a trylock failed, the MDT reports the conflict with
2380 * error code -EBUSY, and stops statahead immediately.
2382 if (info->mti_batch_env) {
2384 * This is a sub stat-ahead request in a batched RPC.
2385 * However, the @child is a remote object, we just
2386 * return -EREMOTE here to forbid stat-ahead on it.
2388 if (mdt_object_remote(child))
2389 GOTO(out_child, rc = -EREMOTE);
2391 try_bits |= child_bits;
2395 if (try_bits != 0) {
2396 /* try layout lock, it may fail to be granted due to
2397 * contention at LOOKUP or UPDATE
2399 rc = mdt_object_lock_try(info, child, lhc, &child_bits,
2401 if (child_bits & MDS_INODELOCK_LAYOUT)
2404 /* Do not enqueue the UPDATE lock from MDT(cross-MDT),
2405 * client will enqueue the lock to the remote MDT
2407 if (mdt_object_remote(child))
2408 rc = mdt_object_lookup_lock(info, NULL, child,
2411 rc = mdt_object_lock(info, child, lhc,
2412 child_bits, LCK_PR);
2414 if (unlikely(rc != 0))
2415 GOTO(out_child, rc);
2416 if (info->mti_batch_env && child_bits == 0) {
2418 mdt_object_unlock(info, child, lhc, 1);
2419 GOTO(out_child, rc = -EBUSY);
2424 child->mot_obj.lo_header->loh_attr |= LOHA_FSCRYPT_MD;
2426 /* finally, we can get attr for child. */
2427 rc = mdt_getattr_internal(info, child, ma_need);
2428 if (unlikely(rc != 0)) {
2430 mdt_object_unlock(info, child, lhc, 1);
2431 GOTO(out_child, rc);
2434 rc = mdt_pack_secctx_in_reply(info, child);
2437 mdt_object_unlock(info, child, lhc, 1);
2438 GOTO(out_child, rc);
2441 rc = mdt_pack_encctx_in_reply(info, child);
2444 mdt_object_unlock(info, child, lhc, 1);
2445 GOTO(out_child, rc);
2448 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
2450 /* Debugging code. */
2451 LDLM_DEBUG(lock, "Returning lock to client");
2452 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
2453 &lock->l_resource->lr_name),
2454 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
2455 PLDLMRES(lock->l_resource),
2456 PFID(mdt_object_fid(child)));
2458 if (unlikely(CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_ENQ_RESEND))) {
2459 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
2460 CFS_FAIL_TIMEOUT(OBD_FAIL_PTLRPC_ENQ_RESEND,
2462 req->rq_arrival_time.tv_sec +
2464 /* Put the lock to the waiting list and force the cancel */
2465 ldlm_set_ast_sent(lock);
2469 * check whether the object is remote as we can't
2470 * really check attributes w/o explicit check for
2471 * object's existence first.
2473 if (!mdt_object_remote(child) && child != parent &&
2474 S_ISREG(lu_object_attr(&child->mot_obj))) {
2475 mdt_object_put(info->mti_env, child);
2476 rc = mdt_pack_size2body(info, child_fid,
2478 if (rc != 0 && child_bits & MDS_INODELOCK_DOM) {
2479 /* DOM lock was taken in advance but this is
2480 * not DoM file. Drop the lock.
2482 lock_res_and_lock(lock);
2483 ldlm_inodebits_drop(lock, MDS_INODELOCK_DOM);
2484 unlock_res_and_lock(lock);
2486 LDLM_LOCK_PUT(lock);
2487 GOTO(unlock_parent, rc = 0);
2489 LDLM_LOCK_PUT(lock);
2495 mdt_object_put(info->mti_env, child);
2498 mdt_object_unlock(info, parent, lhp, 1);
2499 if (rc == -ENOENT) {
2500 /* return -ENOKEY instead of -ENOENT to encryption-unaware
2501 * client if trying to access an encrypted file
2503 int rc2 = mdt_check_enc(info, parent);
2511 /* normal handler: should release the child lock */
2512 static int mdt_getattr_name(struct tgt_session_info *tsi)
2514 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2515 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
2516 struct mdt_body *reqbody;
2517 struct mdt_body *repbody;
2522 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
2523 LASSERT(reqbody != NULL);
2524 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2525 LASSERT(repbody != NULL);
2527 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
2528 repbody->mbo_eadatasize = 0;
2529 repbody->mbo_aclsize = 0;
2531 rc = mdt_init_ucred(info, reqbody);
2533 GOTO(out_shrink, rc);
2535 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
2536 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
2537 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
2538 lhc->mlh_reg_lh.cookie = 0;
2540 mdt_exit_ucred(info);
2543 mdt_client_compatibility(info);
2544 rc2 = mdt_fix_reply(info);
2547 mdt_thread_info_fini(info);
2551 static int mdt_rmfid_unlink(struct mdt_thread_info *info,
2552 const struct lu_fid *pfid,
2553 const struct lu_name *name,
2554 struct mdt_object *obj, s64 ctime)
2556 struct lu_fid *child_fid = &info->mti_tmp_fid1;
2557 struct ldlm_enqueue_info *einfo = &info->mti_einfo;
2558 struct mdt_device *mdt = info->mti_mdt;
2559 struct md_attr *ma = &info->mti_attr;
2560 struct mdt_lock_handle *parent_lh;
2561 struct mdt_lock_handle *child_lh;
2562 struct mdt_object *pobj;
2567 pobj = mdt_object_find(info->mti_env, mdt, pfid);
2569 GOTO(out, rc = PTR_ERR(pobj));
2571 parent_lh = &info->mti_lh[MDT_LH_PARENT];
2572 rc = mdt_parent_lock(info, pobj, parent_lh, name, LCK_PW);
2574 GOTO(put_parent, rc);
2576 rc = mdo_lookup(info->mti_env, mdt_object_child(pobj),
2577 name, child_fid, &info->mti_spec);
2579 GOTO(unlock_parent, rc);
2581 if (!lu_fid_eq(child_fid, mdt_object_fid(obj)))
2582 GOTO(unlock_parent, rc = -EREMCHG);
2584 child_lh = &info->mti_lh[MDT_LH_CHILD];
2585 rc = mdt_object_stripes_lock(info, pobj, obj, child_lh, einfo,
2586 MDS_INODELOCK_LOOKUP |
2587 MDS_INODELOCK_UPDATE, LCK_EX);
2589 GOTO(unlock_parent, rc);
2591 if (atomic_read(&obj->mot_open_count)) {
2592 CDEBUG(D_OTHER, "object "DFID" open, skip\n",
2593 PFID(mdt_object_fid(obj)));
2594 GOTO(unlock_child, rc = -EBUSY);
2598 ma->ma_valid = MA_INODE;
2599 ma->ma_attr.la_valid = LA_CTIME;
2600 ma->ma_attr.la_ctime = ctime;
2602 mutex_lock(&obj->mot_lov_mutex);
2604 rc = mdo_unlink(info->mti_env, mdt_object_child(pobj),
2605 mdt_object_child(obj), name, ma, 0);
2607 mutex_unlock(&obj->mot_lov_mutex);
2610 mdt_object_stripes_unlock(info, obj, child_lh, einfo, 1);
2612 mdt_object_unlock(info, pobj, parent_lh, 1);
2614 mdt_object_put(info->mti_env, pobj);
2619 static int mdt_rmfid_check_permission(struct mdt_thread_info *info,
2620 struct mdt_object *obj)
2622 struct lu_ucred *uc = lu_ucred(info->mti_env);
2623 struct md_attr *ma = &info->mti_attr;
2624 struct lu_attr *la = &ma->ma_attr;
2629 ma->ma_need = MA_INODE;
2630 rc = mo_attr_get(info->mti_env, mdt_object_child(obj), ma);
2634 if (la->la_flags & LUSTRE_IMMUTABLE_FL)
2637 /* we want rbac roles to have precedence over any other
2638 * permission or capability checks
2640 if (!uc->uc_rbac_byfid_ops)
2642 if (cap_raised(uc->uc_cap, CAP_DAC_OVERRIDE))
2644 if (uc->uc_fsuid == la->la_uid) {
2645 if ((la->la_mode & 0200) == 0)
2647 } else if (uc->uc_fsgid == la->la_gid) {
2648 if ((la->la_mode & 0020) == 0)
2650 } else if ((la->la_mode & 0002) == 0) {
2658 static int mdt_rmfid_one(struct mdt_thread_info *info, struct lu_fid *fid,
2661 struct mdt_device *mdt = info->mti_mdt;
2662 struct mdt_object *obj = NULL;
2663 struct linkea_data ldata = { NULL };
2664 struct lu_buf *buf = &info->mti_big_buf;
2665 struct lu_name *name = &info->mti_name;
2666 struct lu_fid *pfid = &info->mti_tmp_fid1;
2667 struct link_ea_header *leh;
2668 struct link_ea_entry *lee;
2669 int reclen, count, rc = 0;
2673 if (!fid_is_sane(fid))
2674 GOTO(out, rc = -EINVAL);
2676 if (!fid_is_namespace_visible(fid))
2677 GOTO(out, rc = -EINVAL);
2679 obj = mdt_object_find(info->mti_env, mdt, fid);
2681 GOTO(out, rc = PTR_ERR(obj));
2683 if (mdt_object_remote(obj))
2684 GOTO(out, rc = -EREMOTE);
2685 if (!mdt_object_exists(obj) || lu_object_is_dying(&obj->mot_header))
2686 GOTO(out, rc = -ENOENT);
2688 rc = mdt_rmfid_check_permission(info, obj);
2693 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
2695 GOTO(out, rc = -ENOMEM);
2698 rc = mdt_links_read(info, obj, &ldata);
2703 lee = (struct link_ea_entry *)(leh + 1);
2704 for (count = 0; count < leh->leh_reccount; count++) {
2705 /* remove every hardlink */
2706 linkea_entry_unpack(lee, &reclen, name, pfid);
2707 lee = (struct link_ea_entry *) ((char *)lee + reclen);
2708 rc = mdt_rmfid_unlink(info, pfid, name, obj, ctime);
2714 if (obj && !IS_ERR(obj))
2715 mdt_object_put(info->mti_env, obj);
2716 if (info->mti_big_buf.lb_buf)
2717 lu_buf_free(&info->mti_big_buf);
2722 static int mdt_rmfid(struct tgt_session_info *tsi)
2724 struct mdt_thread_info *mti = tsi2mdt_info(tsi);
2725 struct mdt_body *reqbody;
2726 struct lu_fid *fids, *rfids;
2733 reqbody = req_capsule_client_get(tsi->tsi_pill, &RMF_MDT_BODY);
2734 if (reqbody == NULL)
2736 bufsize = req_capsule_get_size(tsi->tsi_pill, &RMF_FID_ARRAY,
2738 nr = bufsize / sizeof(struct lu_fid);
2739 if (nr * sizeof(struct lu_fid) != bufsize)
2741 req_capsule_set_size(tsi->tsi_pill, &RMF_RCS,
2742 RCL_SERVER, nr * sizeof(__u32));
2743 req_capsule_set_size(tsi->tsi_pill, &RMF_FID_ARRAY,
2744 RCL_SERVER, nr * sizeof(struct lu_fid));
2745 rc = req_capsule_server_pack(tsi->tsi_pill);
2747 GOTO(out, rc = err_serious(rc));
2748 fids = req_capsule_client_get(tsi->tsi_pill, &RMF_FID_ARRAY);
2751 rcs = req_capsule_server_get(tsi->tsi_pill, &RMF_RCS);
2753 rfids = req_capsule_server_get(tsi->tsi_pill, &RMF_FID_ARRAY);
2756 mdt_init_ucred(mti, reqbody);
2757 for (i = 0; i < nr; i++) {
2759 rcs[i] = mdt_rmfid_one(mti, fids + i, reqbody->mbo_ctime);
2761 mdt_exit_ucred(mti);
2767 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2768 void *karg, void __user *uarg);
2770 int mdt_io_set_info(struct tgt_session_info *tsi)
2772 struct ptlrpc_request *req = tgt_ses_req(tsi);
2773 struct ost_body *body = NULL, *repbody;
2774 void *key, *val = NULL;
2775 int keylen, vallen, rc = 0;
2776 bool is_grant_shrink;
2780 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
2782 DEBUG_REQ(D_HA, req, "no set_info key");
2783 RETURN(err_serious(-EFAULT));
2785 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
2788 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
2790 DEBUG_REQ(D_HA, req, "no set_info val");
2791 RETURN(err_serious(-EFAULT));
2793 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
2796 is_grant_shrink = KEY_IS(KEY_GRANT_SHRINK);
2797 if (is_grant_shrink)
2798 /* In this case the value is actually an RMF_OST_BODY, so we
2799 * transmutate the type of this PTLRPC
2801 req_capsule_extend(tsi->tsi_pill, &RQF_OST_SET_GRANT_INFO);
2803 rc = req_capsule_server_pack(tsi->tsi_pill);
2807 if (is_grant_shrink) {
2808 body = req_capsule_client_get(tsi->tsi_pill, &RMF_OST_BODY);
2810 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
2813 /** handle grant shrink, similar to a read request */
2814 tgt_grant_prepare_read(tsi->tsi_env, tsi->tsi_exp,
2817 CERROR("%s: Unsupported key %s\n",
2818 tgt_name(tsi->tsi_tgt), (char *)key);
2826 static int mdt_set_info(struct tgt_session_info *tsi)
2828 struct ptlrpc_request *req = tgt_ses_req(tsi);
2831 int keylen, vallen, rc = 0;
2835 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
2837 DEBUG_REQ(D_HA, req, "no set_info key");
2838 RETURN(err_serious(-EFAULT));
2841 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
2844 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
2846 DEBUG_REQ(D_HA, req, "no set_info val");
2847 RETURN(err_serious(-EFAULT));
2850 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
2853 /* Swab any part of val you need to here */
2854 if (KEY_IS(KEY_READ_ONLY)) {
2855 /* If client wants rw, make sure nodemap does not enforce ro. */
2856 if (!*(__u32 *)val) {
2857 struct lu_nodemap *nm = NULL;
2858 bool readonly = false;
2861 nm = nodemap_get_from_exp(req->rq_export);
2863 if (!IS_ERR_OR_NULL(nm)) {
2864 readonly = nm->nmf_readonly_mount;
2868 if (unlikely(readonly))
2871 spin_lock(&req->rq_export->exp_lock);
2873 *exp_connect_flags_ptr(req->rq_export) |=
2876 *exp_connect_flags_ptr(req->rq_export) &=
2877 ~OBD_CONNECT_RDONLY;
2878 spin_unlock(&req->rq_export->exp_lock);
2879 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2880 struct changelog_setinfo *cs = val;
2882 if (vallen != sizeof(*cs)) {
2883 CERROR("%s: bad changelog_clear setinfo size %d\n",
2884 tgt_name(tsi->tsi_tgt), vallen);
2887 if (req_capsule_req_need_swab(&req->rq_pill)) {
2888 __swab64s(&cs->cs_recno);
2889 __swab32s(&cs->cs_id);
2892 if (!mdt_changelog_allow(tsi2mdt_info(tsi)))
2894 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
2896 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
2898 obd_export_evict_by_nid(req->rq_export->exp_obd, val);
2905 static int mdt_readpage(struct tgt_session_info *tsi)
2907 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
2908 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
2909 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
2910 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
2911 struct mdt_body *repbody;
2917 if (CFS_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
2918 RETURN(err_serious(-ENOMEM));
2920 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
2921 if (repbody == NULL || reqbody == NULL)
2922 RETURN(err_serious(-EFAULT));
2925 * prepare @rdpg before calling lower layers and transfer itself. Here
2926 * reqbody->size contains offset of where to start to read and
2927 * reqbody->nlink contains number bytes to read.
2929 rdpg->rp_hash = reqbody->mbo_size;
2930 if (rdpg->rp_hash != reqbody->mbo_size) {
2931 CERROR("Invalid hash: %#llx != %#llx\n",
2932 rdpg->rp_hash, reqbody->mbo_size);
2936 rdpg->rp_attrs = reqbody->mbo_mode;
2937 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
2938 rdpg->rp_attrs |= LUDA_64BITHASH;
2939 rdpg->rp_count = min_t(unsigned int, reqbody->mbo_nlink,
2940 exp_max_brw_size(tsi->tsi_exp));
2941 rdpg->rp_npages = (rdpg->rp_count + PAGE_SIZE - 1) >>
2943 OBD_ALLOC_PTR_ARRAY_LARGE(rdpg->rp_pages, rdpg->rp_npages);
2944 if (rdpg->rp_pages == NULL)
2947 for (i = 0; i < rdpg->rp_npages; ++i) {
2948 rdpg->rp_pages[i] = alloc_page(GFP_NOFS);
2949 if (rdpg->rp_pages[i] == NULL)
2950 GOTO(free_rdpg, rc = -ENOMEM);
2953 /* call lower layers to fill allocated pages with directory data */
2954 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
2956 GOTO(free_rdpg, rc);
2958 /* send pages to client */
2959 rc = tgt_sendpage(tsi, rdpg, rc);
2964 for (i = 0; i < rdpg->rp_npages; i++)
2965 if (rdpg->rp_pages[i] != NULL)
2966 __free_page(rdpg->rp_pages[i]);
2967 OBD_FREE_PTR_ARRAY_LARGE(rdpg->rp_pages, rdpg->rp_npages);
2969 if (CFS_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
2975 static int mdt_fix_attr_ucred(struct mdt_thread_info *info, __u32 op)
2977 struct lu_ucred *uc = mdt_ucred_check(info);
2978 struct lu_attr *attr = &info->mti_attr.ma_attr;
2983 if (op != REINT_SETATTR) {
2984 if ((attr->la_valid & LA_UID) && (attr->la_uid != -1))
2985 attr->la_uid = uc->uc_fsuid;
2986 /* for S_ISGID, inherit gid from his parent, such work will be
2987 * done in cmm/mdd layer, here set all cases as uc->uc_fsgid.
2989 if ((attr->la_valid & LA_GID) && (attr->la_gid != -1))
2990 attr->la_gid = uc->uc_fsgid;
2996 static inline bool mdt_is_readonly_open(struct mdt_thread_info *info, __u32 op)
2998 return op == REINT_OPEN &&
2999 !(info->mti_spec.sp_cr_flags & (MDS_FMODE_WRITE | MDS_OPEN_CREAT));
3002 static void mdt_preset_secctx_size(struct mdt_thread_info *info)
3004 struct req_capsule *pill = info->mti_pill;
3006 if (req_capsule_has_field(pill, &RMF_FILE_SECCTX,
3008 req_capsule_has_field(pill, &RMF_FILE_SECCTX_NAME,
3010 if (req_capsule_get_size(pill, &RMF_FILE_SECCTX_NAME,
3012 /* pre-set size in server part with max size */
3013 req_capsule_set_size(pill, &RMF_FILE_SECCTX,
3015 req_capsule_ptlreq(pill) ?
3016 OBD_MAX_DEFAULT_EA_SIZE :
3019 req_capsule_set_size(pill, &RMF_FILE_SECCTX,
3024 static int mdt_reint_internal(struct mdt_thread_info *info,
3025 struct mdt_lock_handle *lhc,
3028 struct req_capsule *pill = info->mti_pill;
3029 struct mdt_body *repbody;
3034 rc = mdt_reint_unpack(info, op);
3036 CERROR("Can't unpack reint, rc %d\n", rc);
3037 RETURN(err_serious(rc));
3041 /* check if the file system is set to readonly. O_RDONLY open
3042 * is still allowed even the file system is set to readonly mode
3044 if (mdt_rdonly(info->mti_exp) && !mdt_is_readonly_open(info, op))
3045 RETURN(err_serious(-EROFS));
3047 /* for replay (no_create) lmm is not needed, client has it already */
3048 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
3049 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
3052 /* llog cookies are always 0, the field is kept for compatibility */
3053 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
3054 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
3056 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
3057 * by default. If the target object has more ACL entries, then
3058 * enlarge the buffer when necessary.
3060 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
3061 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
3062 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
3064 mdt_preset_secctx_size(info);
3065 mdt_preset_encctx_size(info);
3067 rc = req_capsule_server_pack(pill);
3069 CERROR("Can't pack response, rc %d\n", rc);
3070 RETURN(err_serious(rc));
3073 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
3074 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
3076 repbody->mbo_eadatasize = 0;
3077 repbody->mbo_aclsize = 0;
3080 CFS_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
3082 /* for replay no cookkie / lmm need, because client have this already */
3083 if (info->mti_spec.no_create)
3084 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
3085 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
3087 rc = mdt_init_ucred_reint(info);
3089 GOTO(out_shrink, rc);
3091 rc = mdt_fix_attr_ucred(info, op);
3093 GOTO(out_ucred, rc = err_serious(rc));
3095 rc = mdt_check_resent(info, mdt_reconstruct, lhc);
3097 GOTO(out_ucred, rc);
3098 } else if (rc == 1) {
3099 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt");
3100 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
3101 GOTO(out_ucred, rc);
3103 rc = mdt_reint_rec(info, lhc);
3106 mdt_exit_ucred(info);
3108 mdt_client_compatibility(info);
3110 rc2 = mdt_fix_reply(info);
3115 * Data-on-MDT optimization - read data along with OPEN and return it
3116 * in reply when possible.
3118 if (rc == 0 && op == REINT_OPEN && !req_is_replay(pill->rc_req))
3119 rc = mdt_dom_read_on_open(info, info->mti_mdt,
3125 static long mdt_reint_opcode(struct ptlrpc_request *req,
3126 const struct req_format **fmt)
3128 struct mdt_device *mdt;
3129 struct mdt_rec_reint *rec;
3132 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
3134 opc = rec->rr_opcode;
3135 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
3136 if (opc < REINT_MAX && fmt[opc] != NULL)
3137 req_capsule_extend(&req->rq_pill, fmt[opc]);
3139 mdt = mdt_exp2dev(req->rq_export);
3140 CERROR("%s: Unsupported opcode '%ld' from client '%s': rc = %d\n",
3141 req->rq_export->exp_obd->obd_name,
3142 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
3143 opc = err_serious(-EFAULT);
3146 opc = err_serious(-EFAULT);
3151 static int mdt_reint(struct tgt_session_info *tsi)
3155 static const struct req_format *reint_fmts[REINT_MAX] = {
3156 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
3157 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
3158 [REINT_LINK] = &RQF_MDS_REINT_LINK,
3159 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
3160 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
3161 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
3162 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
3163 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
3164 [REINT_MIGRATE] = &RQF_MDS_REINT_MIGRATE,
3165 [REINT_RESYNC] = &RQF_MDS_REINT_RESYNC,
3170 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
3172 struct mdt_thread_info *info = tsi2mdt_info(tsi);
3174 * No lock possible here from client to pass it to reint code
3177 rc = mdt_reint_internal(info, NULL, opc);
3178 mdt_thread_info_fini(info);
3183 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
3187 /* this should sync the whole device */
3188 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
3190 struct dt_device *dt = mdt->mdt_bottom;
3195 rc = dt->dd_ops->dt_sync(env, dt);
3199 /* this should sync this object */
3200 static int mdt_object_sync(const struct lu_env *env, struct obd_export *exp,
3201 struct mdt_object *mo)
3207 if (!mdt_object_exists(mo)) {
3208 CWARN("%s: non existing object "DFID": rc = %d\n",
3209 exp->exp_obd->obd_name, PFID(mdt_object_fid(mo)),
3214 if (S_ISREG(lu_object_attr(&mo->mot_obj))) {
3215 struct lu_target *tgt = tgt_ses_info(env)->tsi_tgt;
3216 dt_obj_version_t version;
3218 version = dt_version_get(env, mdt_obj2dt(mo));
3219 if (version > tgt->lut_obd->obd_last_committed)
3220 rc = mo_object_sync(env, mdt_object_child(mo));
3222 rc = mo_object_sync(env, mdt_object_child(mo));
3228 static int mdt_sync(struct tgt_session_info *tsi)
3230 struct ptlrpc_request *req = tgt_ses_req(tsi);
3231 struct req_capsule *pill = tsi->tsi_pill;
3232 struct mdt_body *body;
3233 ktime_t kstart = ktime_get();
3238 if (CFS_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
3239 RETURN(err_serious(-ENOMEM));
3241 if (fid_seq(&tsi->tsi_mdt_body->mbo_fid1) == 0) {
3242 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
3244 struct mdt_thread_info *info = tsi2mdt_info(tsi);
3246 if (unlikely(info->mti_object == NULL))
3249 /* sync an object */
3250 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp,
3253 const struct lu_fid *fid;
3254 struct lu_attr *la = &info->mti_attr.ma_attr;
3256 info->mti_attr.ma_need = MA_INODE;
3257 info->mti_attr.ma_valid = 0;
3258 rc = mdt_attr_get_complex(info, info->mti_object,
3261 body = req_capsule_server_get(pill,
3263 fid = mdt_object_fid(info->mti_object);
3264 mdt_pack_attr2body(info, body, la, fid);
3267 mdt_thread_info_fini(info);
3270 mdt_counter_incr(req, LPROC_MDT_SYNC,
3271 ktime_us_delta(ktime_get(), kstart));
3276 static int mdt_data_sync(struct tgt_session_info *tsi)
3278 struct mdt_thread_info *info;
3279 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
3280 struct ost_body *body = tsi->tsi_ost_body;
3281 struct ost_body *repbody;
3282 struct mdt_object *mo = NULL;
3288 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
3290 /* device sync is done via MDS_SYNC. NOOP if no fid is specified */
3291 if (fid_is_zero(&tsi->tsi_fid))
3294 mo = mdt_object_find(tsi->tsi_env, mdt, &tsi->tsi_fid);
3296 RETURN(PTR_ERR(mo));
3298 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp, mo);
3302 repbody->oa.o_oi = body->oa.o_oi;
3303 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
3305 info = tsi2mdt_info(tsi);
3306 ma = &info->mti_attr;
3307 ma->ma_need = MA_INODE;
3309 rc = mdt_attr_get_complex(info, mo, ma);
3311 obdo_from_la(&repbody->oa, &ma->ma_attr, VALID_FLAGS);
3314 mdt_thread_info_fini(info);
3319 mdt_object_put(tsi->tsi_env, mo);
3324 * Handle quota control requests to consult current usage/limit, but also
3325 * to configure quota enforcement
3327 static int mdt_quotactl(struct tgt_session_info *tsi)
3329 struct obd_export *exp = tsi->tsi_exp;
3330 struct req_capsule *pill = tsi->tsi_pill;
3331 struct obd_quotactl *oqctl, *repoqc;
3332 struct mdt_device *mdt = mdt_exp2dev(exp);
3333 struct lu_device *qmt = mdt->mdt_qmt_dev;
3334 struct lu_nodemap *nodemap;
3335 char *buffer = NULL;
3340 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
3342 RETURN(err_serious(-EPROTO));
3344 if (oqctl->qc_cmd == LUSTRE_Q_ITERQUOTA ||
3345 oqctl->qc_cmd == LUSTRE_Q_ITEROQUOTA)
3346 req_capsule_set_size(pill, &RMF_OBD_QUOTA_ITER, RCL_SERVER,
3347 LQUOTA_ITER_BUFLEN);
3349 req_capsule_set_size(pill, &RMF_OBD_QUOTA_ITER, RCL_SERVER, 0);
3351 rc = req_capsule_server_pack(pill);
3353 RETURN(err_serious(rc));
3355 nodemap = nodemap_get_from_exp(exp);
3356 if (IS_ERR(nodemap))
3357 RETURN(PTR_ERR(nodemap));
3359 switch (oqctl->qc_cmd) {
3360 /* master quotactl */
3363 case LUSTRE_Q_SETDEFAULT:
3364 case LUSTRE_Q_SETQUOTAPOOL:
3365 case LUSTRE_Q_SETINFOPOOL:
3366 case LUSTRE_Q_SETDEFAULT_POOL:
3367 case LUSTRE_Q_DELETEQID:
3368 case LUSTRE_Q_RESETQID:
3369 if (!nodemap_can_setquota(nodemap, oqctl->qc_type,
3371 GOTO(out_nodemap, rc = -EPERM);
3375 case LUSTRE_Q_GETDEFAULT:
3376 case LUSTRE_Q_GETQUOTAPOOL:
3377 case LUSTRE_Q_GETINFOPOOL:
3378 case LUSTRE_Q_GETDEFAULT_POOL:
3379 case LUSTRE_Q_ITERQUOTA:
3381 GOTO(out_nodemap, rc = -EOPNOTSUPP);
3382 /* slave quotactl */
3386 case LUSTRE_Q_ITEROQUOTA:
3390 CERROR("%s: unsupported quotactl command %d: rc = %d\n",
3391 mdt_obd_name(mdt), oqctl->qc_cmd, rc);
3392 GOTO(out_nodemap, rc);
3396 switch (oqctl->qc_type) {
3398 id = nodemap_map_id(nodemap, NODEMAP_UID,
3399 NODEMAP_CLIENT_TO_FS, id);
3402 id = nodemap_map_id(nodemap, NODEMAP_GID,
3403 NODEMAP_CLIENT_TO_FS, id);
3406 id = nodemap_map_id(nodemap, NODEMAP_PROJID,
3407 NODEMAP_CLIENT_TO_FS, id);
3410 GOTO(out_nodemap, rc = -EOPNOTSUPP);
3412 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
3414 GOTO(out_nodemap, rc = err_serious(-EFAULT));
3416 if (oqctl->qc_cmd == LUSTRE_Q_ITERQUOTA ||
3417 oqctl->qc_cmd == LUSTRE_Q_ITEROQUOTA) {
3418 buffer = req_capsule_server_get(pill, &RMF_OBD_QUOTA_ITER);
3420 GOTO(out_nodemap, rc = err_serious(-EFAULT));
3423 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA)
3424 barrier_exit(tsi->tsi_tgt->lut_bottom);
3426 if (oqctl->qc_id != id)
3427 swap(oqctl->qc_id, id);
3429 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA) {
3430 if (unlikely(!barrier_entry(tsi->tsi_tgt->lut_bottom)))
3431 RETURN(-EINPROGRESS);
3434 switch (oqctl->qc_cmd) {
3440 case LUSTRE_Q_SETDEFAULT:
3441 case LUSTRE_Q_GETDEFAULT:
3442 case LUSTRE_Q_SETQUOTAPOOL:
3443 case LUSTRE_Q_GETQUOTAPOOL:
3444 case LUSTRE_Q_SETINFOPOOL:
3445 case LUSTRE_Q_GETINFOPOOL:
3446 case LUSTRE_Q_SETDEFAULT_POOL:
3447 case LUSTRE_Q_GETDEFAULT_POOL:
3448 case LUSTRE_Q_DELETEQID:
3449 case LUSTRE_Q_RESETQID:
3450 case LUSTRE_Q_ITERQUOTA:
3451 /* forward quotactl request to QMT */
3452 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl, buffer,
3453 buffer == NULL ? 0 :
3454 LQUOTA_ITER_BUFLEN);
3459 case LUSTRE_Q_ITEROQUOTA:
3460 /* slave quotactl */
3461 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
3463 buffer == NULL ? 0 : LQUOTA_ITER_BUFLEN);
3467 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
3468 GOTO(out_nodemap, rc = -EFAULT);
3471 if (oqctl->qc_id != id)
3472 swap(oqctl->qc_id, id);
3474 QCTL_COPY_NO_PNAME(repoqc, oqctl);
3478 nodemap_putref(nodemap);
3483 /** clone llog ctxt from child (mdd)
3484 * This allows remote llog (replicator) access.
3485 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
3486 * context was originally set up, or we can handle them directly.
3487 * I choose the latter, but that means I need any llog
3488 * contexts set up by child to be accessable by the mdt. So we clone the
3489 * context into our context list here.
3491 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
3494 struct md_device *next = mdt->mdt_child;
3495 struct llog_ctxt *ctxt;
3498 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
3501 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
3502 if (rc || ctxt == NULL)
3505 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
3507 CERROR("Can't set mdt ctxt %d\n", rc);
3512 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
3513 struct mdt_device *mdt, int idx)
3515 struct llog_ctxt *ctxt;
3517 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
3520 /* Put once for the get we just did, and once for the clone */
3521 llog_ctxt_put(ctxt);
3522 llog_ctxt_put(ctxt);
3527 * sec context handlers
3529 static int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
3531 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
3537 * quota request handlers
3539 static int mdt_quota_dqacq(struct tgt_session_info *tsi)
3541 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
3542 struct lu_device *qmt = mdt->mdt_qmt_dev;
3548 RETURN(err_serious(-EOPNOTSUPP));
3550 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
3554 struct mdt_object *mdt_object_new(const struct lu_env *env,
3555 struct mdt_device *d,
3556 const struct lu_fid *f)
3558 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
3559 struct lu_object *o;
3560 struct mdt_object *m;
3564 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
3565 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
3566 if (unlikely(IS_ERR(o)))
3567 m = (struct mdt_object *)o;
3573 struct mdt_object *mdt_object_find(const struct lu_env *env,
3574 struct mdt_device *d,
3575 const struct lu_fid *f)
3577 struct lu_object *o;
3578 struct mdt_object *m;
3582 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
3583 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
3584 if (unlikely(IS_ERR(o)))
3585 m = (struct mdt_object *)o;
3593 * Asyncronous commit for mdt device.
3595 * Pass asynchonous commit call down the MDS stack.
3597 * \param env environment
3598 * \param mdt the mdt device
3600 static void mdt_device_commit_async(const struct lu_env *env,
3601 struct mdt_device *mdt)
3603 struct dt_device *dt = mdt->mdt_bottom;
3608 rc = dt->dd_ops->dt_commit_async(env, dt);
3609 if (unlikely(rc != 0))
3610 CWARN("%s: async commit start failed: rc = %d\n",
3611 mdt_obd_name(mdt), rc);
3612 atomic_inc(&mdt->mdt_async_commit_count);
3617 * Mark the lock as "synchonous".
3619 * Mark the lock to deffer transaction commit to the unlock time.
3621 * \param lock the lock to mark as "synchonous"
3623 * \see mdt_is_lock_sync
3624 * \see mdt_save_lock
3626 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
3628 lock->l_ast_data = (void *)1;
3632 * Check whehter the lock "synchonous" or not.
3634 * \param lock the lock to check
3635 * \retval 1 the lock is "synchonous"
3636 * \retval 0 the lock isn't "synchronous"
3638 * \see mdt_set_lock_sync
3639 * \see mdt_save_lock
3641 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
3643 return lock->l_ast_data != NULL;
3647 * Blocking AST for mdt locks.
3649 * Starts transaction commit if in case of COS lock conflict or
3650 * deffers such a commit to the mdt_save_lock.
3652 * \param lock the lock which blocks a request or cancelling lock
3653 * \param desc unused
3654 * \param data unused
3655 * \param flag indicates whether this cancelling or blocking callback
3657 * \see ldlm_blocking_ast_nocheck
3659 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
3660 void *data, int flag)
3662 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
3663 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
3664 struct ldlm_cb_set_arg *arg = data;
3665 bool commit_async = false;
3669 if (flag == LDLM_CB_CANCELING)
3672 lock_res_and_lock(lock);
3673 if (lock->l_blocking_ast != mdt_blocking_ast) {
3674 unlock_res_and_lock(lock);
3678 /* A blocking ast may be sent from ldlm_lock_decref_internal
3679 * when the last reference to a local lock was released and
3680 * during blocking event from ldlm_work_bl_ast_lock().
3681 * The 'data' parameter is l_ast_data in the first case and
3682 * callback arguments in the second one. Distinguish them by that.
3684 if (data && data != lock->l_ast_data && arg->bl_desc) {
3685 if (lock->l_req_mode & (LCK_COS | LCK_TXN))
3686 commit_async = true;
3687 else if ((lock->l_req_mode & (LCK_PW | LCK_EX)) &&
3688 ((mdt_cos_is_enabled(mdt) &&
3689 !arg->bl_desc->bl_same_client) ||
3690 (mdt_slc_is_enabled(mdt) &&
3691 arg->bl_desc->bl_txn_dependent)))
3692 mdt_set_lock_sync(lock);
3695 rc = ldlm_blocking_ast_nocheck(lock);
3700 rc = lu_env_init(&env, LCT_LOCAL);
3701 if (unlikely(rc != 0))
3702 CWARN("%s: lu_env initialization failed, cannot start asynchronous commit: rc = %d\n",
3705 mdt_device_commit_async(&env, mdt);
3712 * Blocking AST for cross-MDT lock
3714 * Discard lock from uncommitted_slc_locks and cancel it.
3716 * \param lock the lock which blocks a request or cancelling lock
3717 * \param desc unused
3718 * \param data unused
3719 * \param flag indicates whether this cancelling or blocking callback
3720 * \retval 0 on success
3721 * \retval negative number on error
3723 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
3724 void *data, int flag)
3731 case LDLM_CB_BLOCKING: {
3732 struct lustre_handle lockh;
3734 ldlm_lock2handle(lock, &lockh);
3735 rc = ldlm_cli_cancel(&lockh,
3736 ldlm_is_atomic_cb(lock) ? 0 : LCF_ASYNC);
3738 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
3743 case LDLM_CB_CANCELING: {
3744 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
3745 struct mdt_device *mdt =
3746 mdt_dev(obd->obd_lu_dev->ld_site->ls_top_dev);
3748 LDLM_DEBUG(lock, "Revoke remote lock");
3750 /* discard slc lock here so that it can be cleaned anytime,
3751 * especially for cleanup_resource()
3753 tgt_discard_slc_lock(&mdt->mdt_lut, lock);
3755 /* once we cache lock, l_ast_data is set to mdt_object */
3756 if (lock->l_ast_data != NULL) {
3757 struct mdt_object *mo = lock->l_ast_data;
3760 rc = lu_env_init(&env, LCT_MD_THREAD);
3761 if (unlikely(rc != 0)) {
3762 CWARN("%s: lu_env initialization failed, object %p "DFID" is leaked!: rc = %d\n",
3764 PFID(mdt_object_fid(mo)), rc);
3768 if (lock->l_policy_data.l_inodebits.bits &
3769 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)) {
3770 rc = mo_invalidate(&env, mdt_object_child(mo));
3771 mo->mot_cache_attr = 0;
3773 mdt_object_put(&env, mo);
3785 int mdt_check_resent_lock(struct mdt_thread_info *info,
3786 struct mdt_object *mo,
3787 struct mdt_lock_handle *lhc)
3789 /* the lock might already be gotten in ldlm_handle_enqueue() */
3790 if (unlikely(lustre_handle_is_used(&lhc->mlh_reg_lh))) {
3791 struct ptlrpc_request *req = mdt_info_req(info);
3792 struct ldlm_lock *lock;
3794 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
3795 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
3797 /* Lock is pinned by ldlm_handle_enqueue0() as it is
3798 * a resend case, however, it could be already destroyed
3799 * due to client eviction or a raced cancel RPC.
3801 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx",
3802 lhc->mlh_reg_lh.cookie);
3806 if (!fid_res_name_eq(mdt_object_fid(mo),
3807 &lock->l_resource->lr_name)) {
3808 CWARN("%s: Although resent, but still not get child lock:"
3810 info->mti_exp->exp_obd->obd_name,
3811 PFID(mdt_object_fid(mo)));
3812 LDLM_LOCK_PUT(lock);
3815 LDLM_LOCK_PUT(lock);
3821 static void mdt_remote_object_lock_created_cb(struct ldlm_lock *lock)
3823 mdt_object_get(NULL, lock->l_ast_data);
3826 static int mdt_remote_object_lock_try(struct mdt_thread_info *mti,
3827 struct mdt_object *obj,
3828 struct lustre_handle *lh,
3829 enum ldlm_mode mode,
3830 union ldlm_policy_data *policy,
3831 struct ldlm_res_id *res_id,
3834 struct ldlm_enqueue_info *einfo = &mti->mti_remote_einfo;
3837 LASSERT(mdt_object_remote(obj));
3839 memset(einfo, 0, sizeof(*einfo));
3840 einfo->ei_type = LDLM_IBITS;
3841 einfo->ei_mode = mode;
3842 einfo->ei_cb_bl = mdt_remote_blocking_ast;
3843 einfo->ei_cb_cp = ldlm_completion_ast;
3844 einfo->ei_enq_slave = 0;
3845 einfo->ei_res_id = res_id;
3846 einfo->ei_req_slot = 1;
3849 * if we cache lock, couple lock with mdt_object, so that object
3850 * can be easily found in lock ASTs.
3852 einfo->ei_cbdata = obj;
3853 einfo->ei_cb_created = mdt_remote_object_lock_created_cb;
3856 rc = mo_object_lock(mti->mti_env, mdt_object_child(obj), lh, einfo,
3863 /* other components like LFSCK can use lockless access
3864 * and populate cache, so we better invalidate it
3866 if (policy->l_inodebits.bits &
3867 (MDS_INODELOCK_UPDATE | MDS_INODELOCK_XATTR))
3868 mo_invalidate(mti->mti_env, mdt_object_child(obj));
3874 * Helper function to take PDO and hash lock.
3876 * if \a pdo_lock is false, don't take PDO lock, this is case in rename.
3878 int mdt_object_pdo_lock(struct mdt_thread_info *info, struct mdt_object *obj,
3879 struct mdt_lock_handle *lh, const struct lu_name *name,
3880 enum ldlm_mode mode, bool pdo_lock)
3882 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
3883 union ldlm_policy_data *policy = &info->mti_policy;
3884 struct ldlm_res_id *res_id = &info->mti_res_id;
3886 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it is never going to
3887 * be sent to client and we do not want it slowed down due to possible
3890 __u64 dlmflags = LDLM_FL_ATOMIC_CB;
3891 __u64 *cookie = NULL;
3896 /* check for exists after object is locked */
3897 if (!mdt_object_exists(obj))
3898 /* Non-existent object shouldn't have PDO lock */
3901 /* Non-dir object shouldn't have PDO lock */
3902 if (!S_ISDIR(lu_object_attr(&obj->mot_obj)))
3905 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
3906 policy->l_inodebits.try_bits = 0;
3907 policy->l_inodebits.li_gid = 0;
3908 policy->l_inodebits.li_initiator_id = mdt_node_id(info->mti_mdt);
3909 fid_build_reg_res_name(mdt_object_fid(obj), res_id);
3911 cookie = &info->mti_exp->exp_handle.h_cookie;
3913 mdt_lock_pdo_init(lh, mode, name);
3914 mdt_lock_pdo_mode(info, obj, lh);
3915 if (lh->mlh_pdo_mode != LCK_NL) {
3917 if (mdt_object_remote(obj)) {
3918 rc = mdt_remote_object_lock_try(info, obj,
3919 &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
3920 policy, res_id, false);
3921 lh->mlh_pdo_remote = 1;
3923 rc = mdt_fid_lock(info->mti_env, ns,
3924 &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
3925 policy, res_id, dlmflags, cookie);
3928 mdt_object_unlock(info, obj, lh, 1);
3932 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
3935 if (mdt_object_remote(obj))
3936 rc = mdt_remote_object_lock_try(info, obj, &lh->mlh_rreg_lh,
3937 lh->mlh_rreg_mode, policy, res_id, false);
3939 rc = mdt_fid_lock(info->mti_env, ns, &lh->mlh_reg_lh,
3940 lh->mlh_reg_mode, policy, res_id, dlmflags, cookie);
3942 mdt_object_unlock(info, obj, lh, 1);
3943 else if (CFS_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK) &&
3944 lh->mlh_pdo_hash != 0 &&
3945 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
3946 CFS_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
3951 int mdt_object_lock_internal(struct mdt_thread_info *info,
3952 struct mdt_object *obj, const struct lu_fid *fid,
3953 struct mdt_lock_handle *lh, __u64 *ibits,
3954 __u64 trybits, bool cache)
3956 union ldlm_policy_data *policy = &info->mti_policy;
3957 struct ldlm_res_id *res_id = &info->mti_res_id;
3958 struct lustre_handle *handle;
3961 policy->l_inodebits.bits = *ibits;
3962 policy->l_inodebits.try_bits = trybits;
3963 policy->l_inodebits.li_gid = lh->mlh_gid;
3964 policy->l_inodebits.li_initiator_id = mdt_node_id(info->mti_mdt);
3965 fid_build_reg_res_name(fid, res_id);
3967 if (obj && mdt_object_remote(obj)) {
3968 handle = &lh->mlh_rreg_lh;
3969 LASSERT(!lustre_handle_is_used(handle));
3970 LASSERT(lh->mlh_rreg_mode != LCK_MINMODE);
3971 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
3972 rc = mdt_remote_object_lock_try(info, obj, handle,
3973 lh->mlh_rreg_mode, policy,
3976 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
3978 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if
3979 * it is going to be sent to client. If it is -
3980 * mdt_intent_policy() path will fix it up and turn FL_LOCAL
3983 __u64 dlmflags = LDLM_FL_ATOMIC_CB | LDLM_FL_LOCAL_ONLY;
3984 __u64 *cookie = NULL;
3986 handle = &lh->mlh_reg_lh;
3987 LASSERT(!lustre_handle_is_used(handle));
3988 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
3989 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
3991 /* Lease lock are granted with LDLM_FL_CANCEL_ON_BLOCK */
3992 if (lh->mlh_type == MDT_REG_LOCK &&
3993 lh->mlh_reg_mode == LCK_EX && *ibits == MDS_INODELOCK_OPEN)
3994 dlmflags |= LDLM_FL_CANCEL_ON_BLOCK;
3998 cookie = &info->mti_exp->exp_handle.h_cookie;
4000 rc = mdt_fid_lock(info->mti_env, ns, handle, lh->mlh_reg_mode,
4001 policy, res_id, dlmflags, cookie);
4003 mdt_object_unlock(info, obj, lh, 1);
4007 struct ldlm_lock *lock;
4009 /* Return successfully acquired bits to a caller */
4010 lock = ldlm_handle2lock(handle);
4012 *ibits = lock->l_policy_data.l_inodebits.bits;
4013 LDLM_LOCK_PUT(lock);
4020 * MDT object locking functions:
4021 * mdt_object_lock(): lock object, this is used in most places, and normally
4022 * lock ibits doesn't contain LOOKUP, unless the caller knows it's not
4024 * mdt_object_check_lock(): lock object with LOOKUP and other ibits, it needs
4025 * to check whether parent is on remote MDT, if so, take LOOKUP on parent
4026 * MDT separately, and then lock other ibits on child object.
4027 * mdt_parent_lock(): take parent UPDATE lock with specific mode, if parent is
4028 * local, take PDO lock by name hash, otherwise take regular lock.
4029 * mdt_object_stripes_lock(): lock object which should be local, and if it's a
4030 * striped directory, lock its stripes, this is called in operations which
4031 * modify both object and stripes.
4032 * mdt_object_lock_try(): lock object with trybits, the trybits contains
4033 * optional inode lock bits that can be granted. This is called by
4034 * getattr/open to fetch more inode lock bits to client, and is also called
4035 * by dir migration to lock link parent in non-block mode to avoid
4042 * this is used to lock object in most places, and normally lock ibits doesn't
4043 * contain LOOKUP, unless the caller knows it's not remote object.
4045 * \param info struct mdt_thread_info
4047 * \param lh lock handle
4048 * \param ibits MDS inode lock bits
4049 * \param mode lock mode
4051 * \retval 0 on success, -ev on error.
4053 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *obj,
4054 struct mdt_lock_handle *lh, __u64 ibits,
4055 enum ldlm_mode mode)
4060 mdt_lock_reg_init(lh, mode);
4061 rc = mdt_object_lock_internal(info, obj, mdt_object_fid(obj), lh,
4067 * lock object with LOOKUP and other ibits
4069 * it will check whether parent and child are on different MDTs, if so, take
4070 * LOOKUP lock on parent MDT, and lock other ibits on child MDT, otherwise lock
4071 * all ibits on child MDT. Note, parent and child shouldn't be both on remote
4072 * MDTs, in which case specific lock function should be used, and it's in
4073 * rename and migrate only.
4075 * \param info struct mdt_thread_info
4076 * \param parent parent object
4077 * \param child child object
4078 * \param lh lock handle
4079 * \param ibits MDS inode lock bits
4080 * \param mode lock mode
4082 * \retval 0 on success, -ev on error.
4084 int mdt_object_check_lock(struct mdt_thread_info *info,
4085 struct mdt_object *parent, struct mdt_object *child,
4086 struct mdt_lock_handle *lh, __u64 ibits,
4087 enum ldlm_mode mode)
4092 /* if LOOKUP ibit is not set, use mdt_object_lock() */
4093 LASSERT(ibits & MDS_INODELOCK_LOOKUP);
4094 /* if only LOOKUP ibit is needed, use mdt_object_lookup_lock() */
4095 LASSERT(ibits != MDS_INODELOCK_LOOKUP);
4097 /* @parent and @child shouldn't both be on remote MDTs */
4098 LASSERT(!(mdt_object_remote(parent) && mdt_object_remote(child)));
4100 mdt_lock_reg_init(lh, mode);
4101 if (mdt_object_remote(parent) ^ mdt_object_remote(child)) {
4102 __u64 lookup_ibits = MDS_INODELOCK_LOOKUP;
4104 rc = mdt_object_lock_internal(info, parent,
4105 mdt_object_fid(child), lh,
4106 &lookup_ibits, 0, false);
4110 ibits &= ~MDS_INODELOCK_LOOKUP;
4113 rc = mdt_object_lock_internal(info, child, mdt_object_fid(child), lh,
4115 if (rc && !(ibits & MDS_INODELOCK_LOOKUP))
4116 mdt_object_unlock(info, NULL, lh, 1);
4122 * take parent UPDATE lock
4124 * if parent is local or mode is LCK_PW, take PDO lock, otherwise take regular
4127 * \param info struct mdt_thread_info
4128 * \param obj parent object
4129 * \param lh lock handle
4130 * \param lname child name
4131 * \param mode lock mode
4133 * \retval 0 on success, -ev on error.
4135 int mdt_parent_lock(struct mdt_thread_info *info, struct mdt_object *obj,
4136 struct mdt_lock_handle *lh, const struct lu_name *lname,
4137 enum ldlm_mode mode)
4142 LASSERT(obj && lname);
4143 LASSERT(mode == LCK_PW || mode == LCK_PR);
4144 if (mdt_object_remote(obj) && mode == LCK_PR) {
4145 __u64 ibits = MDS_INODELOCK_UPDATE;
4147 mdt_lock_reg_init(lh, mode);
4148 rc = mdt_object_lock_internal(info, obj, mdt_object_fid(obj),
4149 lh, &ibits, 0, false);
4151 rc = mdt_object_pdo_lock(info, obj, lh, lname, mode, true);
4157 * lock object with trybits
4159 * the trybits contains optional inode lock bits that can be granted. This is
4160 * called by getattr/open to fetch more inode lock bits to client, and is also
4161 * called by dir migration to lock link parent in non-block mode to avoid
4164 * \param info struct mdt_thread_info
4166 * \param lh lock handle
4167 * \param ibits MDS inode lock bits
4168 * \param trybits optional inode lock bits
4169 * \param mode lock mode
4171 * \retval 0 on success, -ev on error.
4173 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *obj,
4174 struct mdt_lock_handle *lh, __u64 *ibits,
4175 __u64 trybits, enum ldlm_mode mode)
4177 bool trylock_only = *ibits == 0;
4181 LASSERT(!(*ibits & trybits));
4182 mdt_lock_reg_init(lh, mode);
4183 rc = mdt_object_lock_internal(info, obj, mdt_object_fid(obj), lh, ibits,
4185 if (rc && trylock_only) { /* clear error for try ibits lock only */
4186 LASSERT(*ibits == 0);
4193 * Helper function to take \a obj LOOKUP lock.
4195 * Both \a pobj and \a obj may be located on remote MDTs.
4197 int mdt_object_lookup_lock(struct mdt_thread_info *info,
4198 struct mdt_object *pobj, struct mdt_object *obj,
4199 struct mdt_lock_handle *lh, enum ldlm_mode mode)
4201 __u64 ibits = MDS_INODELOCK_LOOKUP;
4205 /* if @parent is NULL, it's on local MDT, and @child is remote,
4206 * this is case in getattr/unlink/open by name.
4208 LASSERT(ergo(!pobj, mdt_object_remote(obj)));
4209 mdt_lock_reg_init(lh, mode);
4210 rc = mdt_object_lock_internal(info, pobj, mdt_object_fid(obj), lh,
4216 * Save a lock within request object.
4218 * Keep the lock referenced until whether client ACK or transaction
4219 * commit happens or release the lock immediately depending on input
4220 * parameters. If COS is ON, a write lock is converted to COS lock
4223 * \param info thead info object
4224 * \param h lock handle
4225 * \param mode lock mode
4226 * \param decref force immediate lock releasing
4228 static void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
4229 enum ldlm_mode mode, int decref)
4231 struct tgt_session_info *tsi = info->mti_env->le_ses ?
4232 tgt_ses_info(info->mti_env) : NULL;
4236 if (lustre_handle_is_used(h)) {
4237 bool has_trans = tsi && tsi->tsi_has_trans;
4239 if (decref || !has_trans || !(mode & (LCK_PW | LCK_EX))) {
4240 mdt_fid_unlock(h, mode);
4242 struct mdt_device *mdt = info->mti_mdt;
4243 struct ldlm_lock *lock = ldlm_handle2lock(h);
4244 struct ptlrpc_request *req = mdt_info_req(info);
4245 bool no_ack = false;
4247 LASSERTF(lock != NULL, "no lock for cookie %#llx\n",
4250 /* there is no request if mdt_object_unlock() is called
4251 * from mdt_export_cleanup()->mdt_add_dirty_flag()
4253 if (likely(req != NULL)) {
4254 LDLM_DEBUG(lock, "save lock request %p reply state %p transno %lld",
4256 req->rq_reply_state, req->rq_transno);
4257 if (mdt_cos_is_enabled(mdt)) {
4260 ldlm_lock_mode_downgrade(lock, mode);
4261 } else if (mdt_slc_is_enabled(mdt)) {
4263 if (mode != LCK_TXN) {
4265 ldlm_lock_mode_downgrade(lock,
4269 if (req->rq_export->exp_disconnected)
4270 mdt_fid_unlock(h, mode);
4272 ptlrpc_save_lock(req, h, no_ack);
4274 mdt_fid_unlock(h, mode);
4277 if (mdt_is_lock_sync(lock)) {
4278 CDEBUG(D_HA, "sync_lock, do async commit\n");
4279 mdt_device_commit_async(info->mti_env, mdt);
4281 LDLM_LOCK_PUT(lock);
4290 * Save cross-MDT lock in uncommitted_slc_locks
4292 * Keep the lock referenced until transaction commit happens or release the lock
4293 * immediately depending on input parameters.
4295 * \param info thead info object
4296 * \param h lock handle
4297 * \param mode lock mode
4298 * \param decref force immediate lock releasing
4300 static void mdt_save_remote_lock(struct mdt_thread_info *info,
4301 struct mdt_object *o, struct lustre_handle *h,
4302 enum ldlm_mode mode, int decref)
4306 if (lustre_handle_is_used(h)) {
4307 struct ldlm_lock *lock = ldlm_handle2lock(h);
4308 struct ptlrpc_request *req = mdt_info_req(info);
4311 (lock->l_policy_data.l_inodebits.bits &
4312 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)))
4313 mo_invalidate(info->mti_env, mdt_object_child(o));
4315 if (decref || !req || !(mode & (LCK_PW | LCK_EX)) ||
4316 !tgt_ses_info(info->mti_env)->tsi_has_trans) {
4317 ldlm_lock_decref_and_cancel(h, mode);
4318 LDLM_LOCK_PUT(lock);
4320 tgt_save_slc_lock(&info->mti_mdt->mdt_lut, lock,
4322 ldlm_lock_decref(h, mode);
4331 * Unlock mdt object.
4333 * Immeditely release the regular lock and the PDO lock or save the
4334 * lock in request and keep them referenced until client ACK or
4335 * transaction commit.
4337 * \param info thread info object
4338 * \param o mdt object
4339 * \param lh mdt lock handle referencing regular and PDO locks
4340 * \param decref force immediate lock releasing
4342 * XXX o is not used and may be NULL, see hsm_cdt_request_completed().
4344 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
4345 struct mdt_lock_handle *lh, int decref)
4349 if (lh->mlh_pdo_remote)
4350 mdt_save_remote_lock(info, o, &lh->mlh_pdo_lh,
4351 lh->mlh_pdo_mode, decref);
4353 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
4354 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
4355 mdt_save_remote_lock(info, o, &lh->mlh_rreg_lh, lh->mlh_rreg_mode,
4361 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
4362 const struct lu_fid *f,
4363 struct mdt_lock_handle *lh,
4364 __u64 ibits, enum ldlm_mode mode)
4366 struct mdt_object *o;
4368 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
4372 rc = mdt_object_lock(info, o, lh, ibits, mode);
4374 mdt_object_put(info->mti_env, o);
4381 void mdt_object_unlock_put(struct mdt_thread_info *info,
4382 struct mdt_object *o,
4383 struct mdt_lock_handle *lh,
4386 mdt_object_unlock(info, o, lh, decref);
4387 mdt_object_put(info->mti_env, o);
4391 * Generic code handling requests that have struct mdt_body passed in:
4393 * - extract mdt_body from request and save it in @info, if present;
4395 * - create lu_object, corresponding to the fid in mdt_body, and save it in
4398 * - if HAS_BODY flag is set for this request type check whether object
4399 * actually exists on storage (lu_object_exists()).
4402 static int mdt_body_unpack(struct mdt_thread_info *info,
4403 enum tgt_handler_flags flags)
4405 const struct mdt_body *body;
4406 struct mdt_object *obj;
4407 const struct lu_env *env;
4408 struct req_capsule *pill;
4413 env = info->mti_env;
4414 pill = info->mti_pill;
4416 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
4420 if (!(body->mbo_valid & OBD_MD_FLID))
4423 if (!fid_is_sane(&body->mbo_fid1)) {
4424 CERROR("Invalid fid: "DFID"\n", PFID(&body->mbo_fid1));
4428 obj = mdt_object_find(env, info->mti_mdt, &body->mbo_fid1);
4430 if ((flags & HAS_BODY) && !mdt_object_exists(obj)) {
4431 mdt_object_put(env, obj);
4434 info->mti_object = obj;
4443 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info,
4444 enum tgt_handler_flags flags)
4446 struct req_capsule *pill = info->mti_pill;
4451 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
4452 rc = mdt_body_unpack(info, flags);
4456 if (rc == 0 && (flags & HAS_REPLY)) {
4458 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
4459 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
4460 req_capsule_ptlreq(pill) ?
4461 DEF_REP_MD_SIZE : MAX_MD_SIZE_OLD);
4463 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
4464 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
4467 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
4468 * by default. If the target object has more ACL entries, then
4469 * enlarge the buffer when necessary.
4471 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
4472 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
4473 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
4475 mdt_preset_secctx_size(info);
4476 mdt_preset_encctx_size(info);
4478 rc = req_capsule_server_pack(pill);
4480 CWARN("%s: cannot pack response: rc = %d\n",
4481 mdt_obd_name(info->mti_mdt), rc);
4486 void mdt_thread_info_reset(struct mdt_thread_info *info)
4488 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
4489 info->mti_body = NULL;
4490 info->mti_dlm_req = NULL;
4491 info->mti_cross_ref = 0;
4492 info->mti_opdata = 0;
4493 info->mti_big_lmm_used = 0;
4494 info->mti_big_acl_used = 0;
4495 info->mti_som_strict = 0;
4496 info->mti_intent_lock = 0;
4498 info->mti_spec.no_create = 0;
4499 info->mti_spec.sp_rm_entry = 0;
4500 info->mti_spec.sp_permitted = 0;
4502 info->mti_spec.u.sp_ea.eadata = NULL;
4503 info->mti_spec.u.sp_ea.eadatalen = 0;
4505 if (info->mti_batch_env && info->mti_object != NULL) {
4506 mdt_object_put(info->mti_env, info->mti_object);
4507 info->mti_object = NULL;
4512 * Initialize fields of struct mdt_thread_info. Other fields are left in
4513 * uninitialized state, because it's too expensive to zero out whole
4514 * mdt_thread_info (> 1K) on each request arrival.
4516 void mdt_thread_info_init(struct ptlrpc_request *req,
4517 struct mdt_thread_info *info)
4519 info->mti_pill = &req->rq_pill;
4521 /* mdt device: it can be NULL while CONNECT */
4522 if (req->rq_export) {
4523 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
4524 info->mti_exp = req->rq_export;
4526 info->mti_mdt = NULL;
4527 info->mti_env = req->rq_svc_thread->t_env;
4528 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
4529 info->mti_big_buf = LU_BUF_NULL;
4530 info->mti_batch_env = 0;
4531 info->mti_object = NULL;
4533 mdt_thread_info_reset(info);
4536 void mdt_thread_info_fini(struct mdt_thread_info *info)
4540 if (info->mti_object != NULL) {
4541 mdt_object_put(info->mti_env, info->mti_object);
4542 info->mti_object = NULL;
4545 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
4546 mdt_lock_handle_assert(&info->mti_lh[i]);
4547 info->mti_env = NULL;
4548 info->mti_pill = NULL;
4549 info->mti_exp = NULL;
4550 info->mti_mdt = NULL;
4552 if (unlikely(info->mti_big_buf.lb_buf != NULL))
4553 lu_buf_free(&info->mti_big_buf);
4556 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
4558 struct mdt_thread_info *mti;
4560 mti = mdt_th_info(tsi->tsi_env);
4561 LASSERT(mti != NULL);
4563 mdt_thread_info_init(tgt_ses_req(tsi), mti);
4564 if (tsi->tsi_corpus != NULL) {
4565 mti->mti_object = mdt_obj(tsi->tsi_corpus);
4566 lu_object_get(tsi->tsi_corpus);
4568 mti->mti_body = tsi->tsi_mdt_body;
4569 mti->mti_dlm_req = tsi->tsi_dlm_req;
4574 static int mdt_tgt_connect(struct tgt_session_info *tsi)
4576 if (CFS_FAIL_CHECK(OBD_FAIL_TGT_DELAY_CONDITIONAL) &&
4578 tsi2mdt_info(tsi)->mti_mdt->mdt_seq_site.ss_node_id)
4579 schedule_timeout_uninterruptible(cfs_time_seconds(3));
4581 return tgt_connect(tsi);
4584 static int mdt_intent_glimpse(enum ldlm_intent_flags it_opc,
4585 struct mdt_thread_info *info,
4586 struct ldlm_lock **lockp, __u64 flags)
4588 return mdt_glimpse_enqueue(info, info->mti_mdt->mdt_namespace,
4591 static int mdt_intent_brw(enum ldlm_intent_flags it_opc,
4592 struct mdt_thread_info *info,
4593 struct ldlm_lock **lockp, __u64 flags)
4595 return mdt_brw_enqueue(info, info->mti_mdt->mdt_namespace,
4599 int mdt_intent_lock_replace(struct mdt_thread_info *info,
4600 struct ldlm_lock **lockp,
4601 struct mdt_lock_handle *lh,
4602 __u64 flags, int result)
4604 struct ptlrpc_request *req = mdt_info_req(info);
4605 struct ldlm_lock *lock = *lockp;
4606 struct ldlm_lock *new_lock;
4608 /* If possible resent found a lock, @lh is set to its handle */
4609 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
4611 if (new_lock == NULL) {
4612 if (flags & LDLM_FL_INTENT_ONLY) {
4614 } else if (flags & LDLM_FL_RESENT) {
4615 /* Lock is pinned by ldlm_handle_enqueue0() as it is a
4616 * resend case, however, it could be already destroyed
4617 * due to client eviction or a raced cancel RPC.
4619 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx\n",
4620 lh->mlh_reg_lh.cookie);
4623 CERROR("%s: Invalid lockh=%#llx flags=%#llx fid1="DFID" fid2="DFID": rc = %d\n",
4624 mdt_obd_name(info->mti_mdt),
4625 lh->mlh_reg_lh.cookie, flags,
4626 PFID(&info->mti_tmp_fid1),
4627 PFID(&info->mti_tmp_fid2), result);
4630 lh->mlh_reg_lh.cookie = 0;
4635 * If we've already given this lock to a client once, then we should
4636 * have no readers or writers. Otherwise, we should have one reader
4637 * _or_ writer ref (which will be zeroed below) before returning the
4640 if (new_lock->l_export == req->rq_export) {
4641 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
4643 LASSERT(new_lock->l_export == NULL);
4644 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
4649 if (new_lock->l_export == req->rq_export) {
4651 * Already gave this to the client, which means that we
4652 * reconstructed a reply.
4654 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
4657 LDLM_LOCK_RELEASE(new_lock);
4658 lh->mlh_reg_lh.cookie = 0;
4659 RETURN(ELDLM_LOCK_REPLACED);
4663 * Fixup the lock to be given to the client.
4665 lock_res_and_lock(new_lock);
4666 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
4667 * possible blocking AST.
4669 while (new_lock->l_readers > 0) {
4670 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
4671 lu_ref_del(&new_lock->l_reference, "user", new_lock);
4672 new_lock->l_readers--;
4674 while (new_lock->l_writers > 0) {
4675 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
4676 lu_ref_del(&new_lock->l_reference, "user", new_lock);
4677 new_lock->l_writers--;
4680 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
4681 new_lock->l_blocking_ast = lock->l_blocking_ast;
4682 new_lock->l_completion_ast = lock->l_completion_ast;
4683 if (ldlm_has_dom(new_lock))
4684 new_lock->l_glimpse_ast = ldlm_server_glimpse_ast;
4685 new_lock->l_remote_handle = lock->l_remote_handle;
4686 new_lock->l_flags &= ~LDLM_FL_LOCAL;
4688 unlock_res_and_lock(new_lock);
4690 cfs_hash_add(new_lock->l_export->exp_lock_hash,
4691 &new_lock->l_remote_handle,
4692 &new_lock->l_exp_hash);
4694 LDLM_LOCK_RELEASE(new_lock);
4695 lh->mlh_reg_lh.cookie = 0;
4697 RETURN(ELDLM_LOCK_REPLACED);
4700 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
4701 struct ldlm_lock *new_lock,
4702 struct mdt_lock_handle *lh, __u64 flags)
4704 struct ptlrpc_request *req = mdt_info_req(info);
4705 struct ldlm_request *dlmreq;
4707 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
4710 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
4712 /* if this is a resend case (MSG_RESENT is set on RPC) and a lock was
4713 * found by ldlm_handle_enqueue(); if so @lh must be initialized.
4715 if (flags & LDLM_FL_RESENT) {
4716 lh->mlh_reg_lh.cookie = new_lock->l_handle.h_cookie;
4717 lh->mlh_reg_mode = new_lock->l_granted_mode;
4719 LDLM_DEBUG(new_lock, "Restoring lock cookie");
4720 DEBUG_REQ(D_DLMTRACE, req, "restoring lock cookie %#llx",
4721 lh->mlh_reg_lh.cookie);
4726 * If the xid matches, then we know this is a resent request, and allow
4727 * it. (It's probably an OPEN, for which we don't send a lock.
4729 if (req_can_reconstruct(req, NULL) != 0)
4733 * This remote handle isn't enqueued, so we never received or processed
4734 * this request. Clear MSG_RESENT, because it can be handled like any
4735 * normal request now.
4737 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
4739 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle %#llx",
4740 dlmreq->lock_handle[0].cookie);
4743 static int mdt_intent_getxattr(enum ldlm_intent_flags it_opc,
4744 struct mdt_thread_info *info,
4745 struct ldlm_lock **lockp,
4748 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4749 struct ldlm_reply *ldlm_rep = NULL;
4755 * Initialize lhc->mlh_reg_lh either from a previously granted lock
4756 * (for the resend case) or a new lock. Below we will use it to
4757 * replace the original lock.
4759 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4760 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
4761 rc = mdt_object_lock(info, info->mti_object, lhc,
4762 MDS_INODELOCK_XATTR, (*lockp)->l_req_mode);
4767 rc = mdt_getxattr(info);
4769 if (mdt_info_req(info)->rq_repmsg != NULL)
4770 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4772 if (ldlm_rep == NULL ||
4773 CFS_FAIL_CHECK(OBD_FAIL_MDS_XATTR_REP)) {
4774 mdt_object_unlock(info, info->mti_object, lhc, 1);
4778 RETURN(err_serious(-EFAULT));
4781 ldlm_rep->lock_policy_res2 = clear_serious(rc);
4783 /* This is for interop instead of adding a new interop flag. LU-7433 */
4784 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(3, 0, 0, 0)
4785 if (ldlm_rep->lock_policy_res2) {
4786 mdt_object_unlock(info, info->mti_object, lhc, 1);
4787 RETURN(ELDLM_LOCK_ABORTED);
4791 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4795 static int mdt_intent_getattr(enum ldlm_intent_flags it_opc,
4796 struct mdt_thread_info *info,
4797 struct ldlm_lock **lockp,
4800 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4802 struct ldlm_reply *ldlm_rep;
4803 struct mdt_body *reqbody;
4804 struct mdt_body *repbody;
4809 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
4812 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
4815 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
4816 repbody->mbo_eadatasize = 0;
4817 repbody->mbo_aclsize = 0;
4821 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
4824 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
4828 CERROR("%s: unsupported intent %#x\n",
4829 mdt_obd_name(info->mti_mdt), (unsigned int)it_opc);
4830 GOTO(out_shrink, rc = -EINVAL);
4833 rc = mdt_init_ucred(info, reqbody);
4835 GOTO(out_shrink, rc);
4837 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4838 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
4840 /* Get lock from request for possible resent case. */
4841 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4843 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
4844 ldlm_rep->lock_policy_res2 = clear_serious(rc);
4846 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG) &&
4847 ldlm_rep->lock_policy_res2 != -ENOKEY)
4848 ldlm_rep->lock_policy_res2 = 0;
4849 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
4850 ldlm_rep->lock_policy_res2) {
4851 lhc->mlh_reg_lh.cookie = 0ull;
4852 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
4855 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4858 mdt_exit_ucred(info);
4860 mdt_client_compatibility(info);
4861 rc2 = mdt_fix_reply(info);
4867 static int mdt_intent_layout(enum ldlm_intent_flags it_opc,
4868 struct mdt_thread_info *info,
4869 struct ldlm_lock **lockp,
4872 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4873 struct md_layout_change layout = { .mlc_opc = MD_LAYOUT_NOP };
4874 struct layout_intent *intent;
4875 struct ldlm_reply *ldlm_rep;
4876 struct lu_fid *fid = &info->mti_tmp_fid2;
4877 struct mdt_object *obj = NULL;
4878 int layout_size = 0;
4879 struct lu_buf *buf = &layout.mlc_buf;
4884 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
4886 intent = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
4890 CDEBUG(D_INFO, DFID "got layout change request from client: opc:%u flags:%#x extent "
4892 PFID(fid), intent->lai_opc, intent->lai_flags,
4893 PEXT(&intent->lai_extent));
4895 switch (intent->lai_opc) {
4896 case LAYOUT_INTENT_TRUNC:
4897 case LAYOUT_INTENT_WRITE:
4898 case LAYOUT_INTENT_PCCRO_SET:
4899 case LAYOUT_INTENT_PCCRO_CLEAR:
4900 layout.mlc_opc = MD_LAYOUT_WRITE;
4901 layout.mlc_intent = intent;
4903 case LAYOUT_INTENT_ACCESS:
4905 case LAYOUT_INTENT_READ:
4906 case LAYOUT_INTENT_GLIMPSE:
4907 case LAYOUT_INTENT_RELEASE:
4908 case LAYOUT_INTENT_RESTORE:
4909 CERROR("%s: Unsupported layout intent opc %d\n",
4910 mdt_obd_name(info->mti_mdt), intent->lai_opc);
4913 CERROR("%s: Unknown layout intent opc %d\n",
4914 mdt_obd_name(info->mti_mdt), intent->lai_opc);
4918 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
4920 RETURN(PTR_ERR(obj));
4922 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
4923 /* if layout is going to be changed don't use the current EA
4924 * size but the maximum one. That buffer will be shrinked
4925 * to the actual size in req_capsule_shrink() before reply.
4927 if (layout.mlc_opc == MD_LAYOUT_WRITE) {
4928 layout_size = info->mti_mdt->mdt_max_mdsize;
4930 layout_size = mdt_attr_get_eabuf_size(info, obj);
4931 if (layout_size < 0)
4932 GOTO(out, rc = layout_size);
4934 if (layout_size > info->mti_mdt->mdt_max_mdsize)
4935 info->mti_mdt->mdt_max_mdsize = layout_size;
4937 CDEBUG(D_INFO, "%s: layout_size %d\n",
4938 mdt_obd_name(info->mti_mdt), layout_size);
4942 * set reply buffer size, so that ldlm_handle_enqueue0()->
4943 * ldlm_lvbo_fill() will fill the reply buffer with lovea.
4945 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
4947 rc = req_capsule_server_pack(info->mti_pill);
4951 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4953 GOTO(out, rc = -EPROTO);
4955 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
4957 /* take lock in ldlm_lock_enqueue() for LAYOUT_INTENT_ACCESS */
4958 if (layout.mlc_opc == MD_LAYOUT_NOP)
4961 rc = mdt_check_resent(info, mdt_reconstruct_generic, lhc);
4965 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
4966 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
4972 if (unlikely(req_is_replay(mdt_info_req(info)))) {
4973 buf->lb_buf = req_capsule_client_get(info->mti_pill,
4975 buf->lb_len = req_capsule_get_size(info->mti_pill,
4976 &RMF_EADATA, RCL_CLIENT);
4978 * If it's a replay of layout write intent RPC, the client has
4979 * saved the extended lovea when it get reply then.
4981 if (buf->lb_len > 0)
4982 mdt_fix_lov_magic(info, buf->lb_buf);
4985 /* Get lock from request for possible resent case. */
4986 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4987 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
4990 * Instantiate some layout components, if @buf contains lovea, then it's
4991 * a replay of the layout intent write RPC.
4993 rc = mdt_layout_change(info, obj, lhc, &layout);
4994 ldlm_rep->lock_policy_res2 = clear_serious(rc);
4996 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
4997 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4998 if (rc == ELDLM_LOCK_REPLACED &&
4999 (*lockp)->l_granted_mode == LCK_EX)
5000 ldlm_lock_mode_downgrade(*lockp, LCK_CR);
5005 mdt_object_put(info->mti_env, obj);
5009 static int mdt_intent_open(enum ldlm_intent_flags it_opc,
5010 struct mdt_thread_info *info,
5011 struct ldlm_lock **lockp,
5014 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
5015 struct ldlm_reply *rep = NULL;
5018 struct ptlrpc_request *req = mdt_info_req(info);
5020 static const struct req_format *intent_fmts[REINT_MAX] = {
5021 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
5022 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
5027 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
5031 /* Get lock from request for possible resent case. */
5032 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
5034 rc = mdt_reint_internal(info, lhc, opc);
5036 if (rc < 0 && lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
5037 DEBUG_REQ(D_ERROR, req, "Replay open failed with %d", rc);
5039 /* Check whether the reply has been packed successfully. */
5040 if (mdt_info_req(info)->rq_repmsg != NULL)
5041 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
5046 RETURN(err_serious(-EFAULT));
5049 /* MDC expects this in any case */
5051 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
5053 /* the open lock or the lock for cross-ref object should be
5054 * returned to the client
5056 if (lustre_handle_is_used(&lhc->mlh_reg_lh) &&
5057 (rc == 0 || rc == -MDT_EREMOTE_OPEN)) {
5058 rep->lock_policy_res2 = 0;
5059 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
5063 rep->lock_policy_res2 = clear_serious(rc);
5065 if (rep->lock_policy_res2 == -ENOENT &&
5066 mdt_get_disposition(rep, DISP_LOOKUP_NEG) &&
5067 !mdt_get_disposition(rep, DISP_OPEN_CREATE))
5068 rep->lock_policy_res2 = 0;
5070 lhc->mlh_reg_lh.cookie = 0ull;
5071 if (rc == -ENOTCONN || rc == -ENODEV ||
5072 rc == -EOVERFLOW) { /**< if VBR failure then return error */
5074 * If it is the disconnect error (ENODEV & ENOCONN), the error
5075 * will be returned by rq_status, and client at ptlrpc layer
5076 * will detect this, then disconnect, reconnect the import
5077 * immediately, instead of impacting the following the rpc.
5082 * For other cases, the error will be returned by intent, and client
5083 * will retrieve the result from intent.
5085 RETURN(ELDLM_LOCK_ABORTED);
5088 static int mdt_intent_opc(enum ldlm_intent_flags it_opc,
5089 struct mdt_thread_info *info,
5090 struct ldlm_lock **lockp,
5091 u64 flags /* LDLM_FL_* */)
5093 struct req_capsule *pill = info->mti_pill;
5094 struct ptlrpc_request *req = mdt_info_req(info);
5095 const struct req_format *it_format;
5096 int (*it_handler)(enum ldlm_intent_flags,
5097 struct mdt_thread_info *,
5098 struct ldlm_lock **,
5100 enum tgt_handler_flags it_handler_flags = 0;
5101 struct ldlm_reply *rep;
5102 bool check_mdt_object = false;
5110 case IT_OPEN|IT_CREAT:
5112 * OCREAT is not a IS_MUTABLE request since the file may
5113 * already exist. We do the extra check of
5114 * OBD_CONNECT_RDONLY in mdt_reint_open() when we
5115 * really need to create the object.
5117 it_format = &RQF_LDLM_INTENT;
5118 it_handler = &mdt_intent_open;
5121 check_mdt_object = true;
5124 it_format = &RQF_LDLM_INTENT_GETATTR;
5125 it_handler = &mdt_intent_getattr;
5126 it_handler_flags = HAS_REPLY;
5129 check_mdt_object = true;
5130 it_format = &RQF_LDLM_INTENT_GETXATTR;
5131 it_handler = &mdt_intent_getxattr;
5132 it_handler_flags = HAS_BODY;
5135 it_format = &RQF_LDLM_INTENT_LAYOUT;
5136 it_handler = &mdt_intent_layout;
5139 it_format = &RQF_LDLM_INTENT;
5140 it_handler = &mdt_intent_glimpse;
5143 it_format = &RQF_LDLM_INTENT;
5144 it_handler = &mdt_intent_brw;
5146 case IT_QUOTA_DQACQ:
5147 case IT_QUOTA_CONN: {
5148 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
5151 RETURN(-EOPNOTSUPP);
5153 if (mdt_rdonly(req->rq_export))
5156 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
5157 /* pass the request to quota master */
5158 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
5159 mdt_info_req(info), lockp,
5164 CERROR("%s: unknown intent code %#x\n",
5165 mdt_obd_name(info->mti_mdt), it_opc);
5169 if (!info->mti_batch_env)
5170 req_capsule_extend(pill, it_format);
5172 rc = mdt_unpack_req_pack_rep(info, it_handler_flags);
5176 if (unlikely(info->mti_object == NULL && check_mdt_object))
5179 if (it_handler_flags & IS_MUTABLE && mdt_rdonly(req->rq_export))
5182 CFS_FAIL_TIMEOUT(OBD_FAIL_MDS_INTENT_DELAY, 10);
5184 /* execute policy */
5185 rc = (*it_handler)(it_opc, info, lockp, flags);
5187 /* Check whether the reply has been packed successfully. */
5188 if (info->mti_batch_env || req->rq_repmsg != NULL) {
5189 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
5190 rep->lock_policy_res2 =
5191 ptlrpc_status_hton(rep->lock_policy_res2);
5197 static void mdt_ptlrpc_stats_update(struct ptlrpc_request *req,
5198 enum ldlm_intent_flags it_opc)
5200 struct lprocfs_stats *srv_stats = ptlrpc_req2svc(req)->srv_stats;
5202 /* update stats when IT code is known */
5203 if (srv_stats != NULL)
5204 lprocfs_counter_incr(srv_stats,
5205 PTLRPC_LAST_CNTR + (it_opc == IT_GLIMPSE ?
5206 LDLM_GLIMPSE_ENQUEUE : LDLM_IBITS_ENQUEUE));
5209 static int mdt_intent_policy(const struct lu_env *env,
5210 struct ldlm_namespace *ns,
5211 struct ldlm_lock **lockp,
5213 enum ldlm_mode mode,
5214 __u64 flags, void *data)
5216 struct tgt_session_info *tsi;
5217 struct mdt_thread_info *info;
5218 struct ptlrpc_request *req = req_cookie;
5219 struct ldlm_intent *it;
5220 struct req_capsule *pill;
5221 const struct ldlm_lock_desc *ldesc;
5226 LASSERT(req != NULL);
5228 tsi = tgt_ses_info(env);
5230 info = mdt_th_info(env);
5231 LASSERT(info != NULL);
5233 /* Check whether it is a sub request processing in a batch request */
5234 if (info->mti_batch_env) {
5235 pill = info->mti_pill;
5236 LASSERT(pill == &info->mti_sub_pill);
5238 info = tsi2mdt_info(tsi);
5239 pill = info->mti_pill;
5242 LASSERT(pill->rc_req == req);
5243 ldesc = &info->mti_dlm_req->lock_desc;
5245 if (info->mti_batch_env ||
5246 req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
5248 * For batch processing environment, the request format has
5251 if (!info->mti_batch_env)
5252 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
5254 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
5256 mdt_ptlrpc_stats_update(req, it->opc);
5257 info->mti_intent_lock = 1;
5259 * For intent lock request with policy, the ELC locks
5260 * have been cancelled in ldlm_handle_enqueue0().
5261 * Thus set @mti_dlm_req with null here.
5263 info->mti_dlm_req = NULL;
5264 rc = mdt_intent_opc(it->opc, info, lockp, flags);
5268 /* Lock without inodebits makes no sense and will oops
5269 * later in ldlm. Let's check it now to see if we have
5270 * ibits corrupted somewhere in mdt_intent_opc().
5271 * The case for client miss to set ibits has been
5272 * processed by others.
5274 LASSERT(ergo(ldesc->l_resource.lr_type == LDLM_IBITS,
5275 ldesc->l_policy_data.l_inodebits.bits != 0));
5277 rc = err_serious(-EFAULT);
5279 } else if (ldesc->l_resource.lr_type == LDLM_IBITS &&
5280 ldesc->l_policy_data.l_inodebits.bits == MDS_INODELOCK_DOM) {
5281 struct ldlm_reply *rep;
5283 /* No intent was provided but INTENT flag is set along with
5284 * DOM bit, this is considered as GLIMPSE request.
5285 * This logic is common for MDT and OST glimpse
5287 mdt_ptlrpc_stats_update(req, IT_GLIMPSE);
5288 rc = mdt_glimpse_enqueue(info, ns, lockp, flags);
5289 /* Check whether the reply has been packed successfully. */
5290 if (req->rq_repmsg != NULL) {
5291 rep = req_capsule_server_get(info->mti_pill,
5293 rep->lock_policy_res2 =
5294 ptlrpc_status_hton(rep->lock_policy_res2);
5297 /* No intent was provided */
5298 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
5299 rc = req_capsule_server_pack(pill);
5301 rc = err_serious(rc);
5304 if (!info->mti_batch_env)
5305 mdt_thread_info_fini(info);
5309 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
5311 struct seq_server_site *ss = mdt_seq_site(mdt);
5313 if (ss->ss_node_id == 0)
5316 if (ss->ss_client_seq != NULL) {
5317 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
5318 ss->ss_client_seq->lcs_exp = NULL;
5321 if (ss->ss_server_fld != NULL) {
5322 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
5323 ss->ss_server_fld->lsf_control_exp = NULL;
5327 static void mdt_seq_fini_cli(struct mdt_device *mdt)
5329 struct seq_server_site *ss = mdt_seq_site(mdt);
5334 if (ss->ss_server_seq != NULL)
5335 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
5338 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
5340 mdt_seq_fini_cli(mdt);
5341 mdt_deregister_seq_exp(mdt);
5343 return seq_site_fini(env, mdt_seq_site(mdt));
5347 * It will retrieve its FLDB entries from MDT0, and it only happens
5348 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
5349 * and it needs to refresh FLDB from the MDT0.
5351 static int mdt_register_lwp_callback(void *data)
5354 struct mdt_device *mdt = data;
5355 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
5360 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
5362 rc = lu_env_init(&env, LCT_MD_THREAD);
5364 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
5368 /* Allocate new sequence now to avoid creating local transaction
5369 * in the normal transaction process
5371 rc = seq_server_check_and_alloc_super(&env,
5372 mdt_seq_site(mdt)->ss_server_seq);
5377 rc = fld_update_from_controller(&env, fld);
5379 CERROR("%s: cannot update controller: rc = %d\n",
5380 mdt_obd_name(mdt), rc);
5389 static int mdt_register_seq_exp(struct mdt_device *mdt)
5391 struct seq_server_site *ss = mdt_seq_site(mdt);
5392 char *lwp_name = NULL;
5395 if (ss->ss_node_id == 0)
5398 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
5399 if (lwp_name == NULL)
5400 GOTO(out_free, rc = -ENOMEM);
5402 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
5406 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
5411 rc = lustre_register_lwp_item(lwp_name,
5412 &ss->ss_server_fld->lsf_control_exp,
5413 mdt_register_lwp_callback, mdt);
5415 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
5416 ss->ss_client_seq->lcs_exp = NULL;
5420 if (lwp_name != NULL)
5421 OBD_FREE(lwp_name, MAX_OBD_NAME);
5427 * Init client sequence manager which is used by local MDS to talk to sequence
5428 * controller on remote node.
5430 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
5432 struct seq_server_site *ss = mdt_seq_site(mdt);
5437 /* check if this is adding the first MDC and controller is not yet
5440 OBD_ALLOC_PTR(ss->ss_client_seq);
5441 if (ss->ss_client_seq == NULL)
5444 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
5445 if (prefix == NULL) {
5446 OBD_FREE_PTR(ss->ss_client_seq);
5447 ss->ss_client_seq = NULL;
5451 /* Note: seq_client_fini will be called in seq_site_fini */
5452 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
5453 seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
5454 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
5456 OBD_FREE(prefix, MAX_OBD_NAME + 5);
5458 RETURN(seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq));
5461 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
5463 struct seq_server_site *ss;
5468 ss = mdt_seq_site(mdt);
5469 /* init sequence controller server(MDT0) */
5470 if (ss->ss_node_id == 0) {
5471 OBD_ALLOC_PTR(ss->ss_control_seq);
5472 if (ss->ss_control_seq == NULL)
5475 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
5476 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
5479 GOTO(out_seq_fini, rc);
5482 /* Init normal sequence server */
5483 OBD_ALLOC_PTR(ss->ss_server_seq);
5484 if (ss->ss_server_seq == NULL)
5485 GOTO(out_seq_fini, rc = -ENOMEM);
5487 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
5488 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
5490 GOTO(out_seq_fini, rc);
5492 /* init seq client for seq server to talk to seq controller(MDT0) */
5493 rc = mdt_seq_init_cli(env, mdt);
5495 GOTO(out_seq_fini, rc);
5497 if (ss->ss_node_id != 0)
5498 /* register controller export through lwp */
5499 rc = mdt_register_seq_exp(mdt);
5504 mdt_seq_fini(env, mdt);
5512 static int mdt_fld_fini(const struct lu_env *env,
5513 struct mdt_device *m)
5515 struct seq_server_site *ss = mdt_seq_site(m);
5519 if (ss && ss->ss_server_fld) {
5520 fld_server_fini(env, ss->ss_server_fld);
5521 OBD_FREE_PTR(ss->ss_server_fld);
5522 ss->ss_server_fld = NULL;
5528 static int mdt_fld_init(const struct lu_env *env,
5530 struct mdt_device *m)
5532 struct seq_server_site *ss;
5537 ss = mdt_seq_site(m);
5539 OBD_ALLOC_PTR(ss->ss_server_fld);
5540 if (ss->ss_server_fld == NULL)
5541 RETURN(rc = -ENOMEM);
5543 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
5546 OBD_FREE_PTR(ss->ss_server_fld);
5547 ss->ss_server_fld = NULL;
5554 static void mdt_stack_pre_fini(const struct lu_env *env,
5555 struct mdt_device *m, struct lu_device *top)
5557 struct lustre_cfg_bufs *bufs;
5558 struct lustre_cfg *lcfg;
5559 struct mdt_thread_info *info;
5565 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5566 LASSERT(info != NULL);
5568 bufs = &info->mti_u.bufs;
5570 LASSERT(m->mdt_child_exp);
5571 LASSERT(m->mdt_child_exp->exp_obd);
5573 /* process cleanup, pass mdt obd name to get obd umount flags */
5574 /* XXX: this is needed because all layers are referenced by
5575 * objects (some of them are pinned by osd, for example *
5576 * the proper solution should be a model where object used
5577 * by osd only doesn't have mdt/mdd slices -bzzz
5579 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
5580 lustre_cfg_bufs_set_string(bufs, 1, NULL);
5581 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5584 lustre_cfg_init(lcfg, LCFG_PRE_CLEANUP, bufs);
5586 top->ld_ops->ldo_process_config(env, top, lcfg);
5587 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5591 static void mdt_stack_fini(const struct lu_env *env,
5592 struct mdt_device *m, struct lu_device *top)
5594 struct obd_device *obd = mdt2obd_dev(m);
5595 struct lustre_cfg_bufs *bufs;
5596 struct lustre_cfg *lcfg;
5597 struct mdt_thread_info *info;
5602 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5603 LASSERT(info != NULL);
5605 lu_dev_del_linkage(top->ld_site, top);
5607 lu_site_purge(env, top->ld_site, -1);
5609 bufs = &info->mti_u.bufs;
5610 /* process cleanup, pass mdt obd name to get obd umount flags */
5611 /* another purpose is to let all layers to release their objects */
5612 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
5617 lustre_cfg_bufs_set_string(bufs, 1, flags);
5618 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5621 lustre_cfg_init(lcfg, LCFG_CLEANUP, bufs);
5624 top->ld_ops->ldo_process_config(env, top, lcfg);
5625 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5627 lu_site_purge(env, top->ld_site, -1);
5629 m->mdt_child = NULL;
5630 m->mdt_bottom = NULL;
5632 obd_disconnect(m->mdt_child_exp);
5633 m->mdt_child_exp = NULL;
5635 obd_disconnect(m->mdt_bottom_exp);
5636 m->mdt_child_exp = NULL;
5639 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
5640 const char *next, struct obd_export **exp)
5642 struct obd_connect_data *data = NULL;
5643 struct obd_device *obd;
5648 OBD_ALLOC_PTR(data);
5650 GOTO(out, rc = -ENOMEM);
5652 obd = class_name2obd(next);
5654 CERROR("%s: can't locate next device: %s\n",
5655 mdt_obd_name(m), next);
5656 GOTO(out, rc = -ENOTCONN);
5659 data->ocd_connect_flags = OBD_CONNECT_VERSION;
5660 data->ocd_version = LUSTRE_VERSION_CODE;
5662 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
5664 CERROR("%s: cannot connect to next dev %s (%d)\n",
5665 mdt_obd_name(m), next, rc);
5675 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
5676 struct lustre_cfg *cfg)
5678 char *dev = lustre_cfg_string(cfg, 0);
5679 int rc, name_size, uuid_size;
5680 char *name, *uuid, *p;
5681 struct lustre_cfg_bufs *bufs;
5682 struct lustre_cfg *lcfg;
5683 struct obd_device *obd;
5684 struct lustre_profile *lprof;
5685 struct lu_site *site;
5689 /* in 1.8 we had the only device in the stack - MDS.
5690 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
5691 * in 2.3 OSD is instantiated by obd_mount.c, so we need
5692 * to generate names and setup MDT, MDD. MDT will be using
5693 * generated name to connect to MDD. for MDD the next device
5694 * will be LOD with name taken from so called "profile" which
5695 * is generated by mount_option line
5697 * 1.8 MGS generates config. commands like this:
5698 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
5699 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
5700 * 2.0 MGS generates config. commands like this:
5701 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
5702 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
5703 * 3:lustre-MDT0000-mdtlov 4:f
5705 * we generate MDD name from MDT one, just replacing T with D
5707 * after all the preparations, the logical equivalent will be
5708 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
5709 * 3:lustre-MDT0000-mdtlov 4:f
5710 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
5711 * 3:lustre-MDD0000 4:f
5713 * notice we build the stack from down to top: MDD first, then MDT
5716 name_size = MAX_OBD_NAME;
5717 uuid_size = MAX_OBD_NAME;
5719 OBD_ALLOC(name, name_size);
5720 OBD_ALLOC(uuid, uuid_size);
5721 if (name == NULL || uuid == NULL)
5722 GOTO(cleanup_mem, rc = -ENOMEM);
5724 OBD_ALLOC_PTR(bufs);
5726 GOTO(cleanup_mem, rc = -ENOMEM);
5729 p = strstr(name, "-MDT");
5731 GOTO(free_bufs, rc = -ENOMEM);
5734 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
5736 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
5737 if (lprof == NULL || lprof->lp_dt == NULL) {
5738 CERROR("can't find the profile: %s\n",
5739 lustre_cfg_string(cfg, 0));
5740 GOTO(free_bufs, rc = -EINVAL);
5743 lustre_cfg_bufs_reset(bufs, name);
5744 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
5745 lustre_cfg_bufs_set_string(bufs, 2, uuid);
5746 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
5748 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5750 GOTO(put_profile, rc = -ENOMEM);
5751 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
5753 rc = class_attach(lcfg);
5755 GOTO(lcfg_cleanup, rc);
5757 obd = class_name2obd(name);
5759 CERROR("Can not find obd %s (%s in config)\n",
5760 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
5761 GOTO(lcfg_cleanup, rc = -EINVAL);
5764 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5766 lustre_cfg_bufs_reset(bufs, name);
5767 lustre_cfg_bufs_set_string(bufs, 1, uuid);
5768 lustre_cfg_bufs_set_string(bufs, 2, dev);
5769 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
5771 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5773 GOTO(class_detach, rc = -ENOMEM);
5774 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
5776 rc = class_setup(obd, lcfg);
5778 GOTO(class_detach, rc);
5780 /* connect to MDD we just setup */
5781 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
5783 GOTO(class_detach, rc);
5785 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
5787 LASSERT(mdt_lu_site(mdt) == NULL);
5788 mdt->mdt_lu_dev.ld_site = site;
5789 site->ls_top_dev = &mdt->mdt_lu_dev;
5790 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
5792 /* now connect to bottom OSD */
5793 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
5794 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
5796 GOTO(class_detach, rc);
5798 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
5800 rc = lu_env_refill((struct lu_env *)env);
5802 CERROR("Failure to refill session: '%d'\n", rc);
5804 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
5809 class_detach(obd, lcfg);
5811 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5813 class_put_profile(lprof);
5818 OBD_FREE(name, name_size);
5820 OBD_FREE(uuid, uuid_size);
5824 /* setup quota master target on MDT0 */
5825 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
5826 struct lustre_cfg *cfg)
5828 struct obd_device *obd;
5829 char *dev = lustre_cfg_string(cfg, 0);
5830 char *qmtname, *uuid, *p;
5831 struct lustre_cfg_bufs *bufs;
5832 struct lustre_cfg *lcfg;
5833 struct lustre_profile *lprof;
5834 struct obd_connect_data *data;
5839 LASSERT(mdt->mdt_qmt_exp == NULL);
5840 LASSERT(mdt->mdt_qmt_dev == NULL);
5842 /* quota master is on MDT0 only for now */
5843 if (mdt->mdt_seq_site.ss_node_id != 0)
5846 /* MGS generates config commands which look as follows:
5847 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
5848 * 3:lustre-MDT0000-mdtlov 4:f
5850 * We generate the QMT name from the MDT one, just replacing MD with QM
5851 * after all the preparations, the logical equivalent will be:
5852 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
5853 * 3:lustre-MDT0000-osd 4:f
5855 OBD_ALLOC(qmtname, MAX_OBD_NAME);
5856 OBD_ALLOC(uuid, UUID_MAX);
5857 OBD_ALLOC_PTR(bufs);
5858 OBD_ALLOC_PTR(data);
5859 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
5860 GOTO(cleanup_mem, rc = -ENOMEM);
5862 strcpy(qmtname, dev);
5863 p = strstr(qmtname, "-MDT");
5865 GOTO(cleanup_mem, rc = -ENOMEM);
5866 /* replace MD with QM */
5870 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
5872 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
5873 if (lprof == NULL || lprof->lp_dt == NULL) {
5874 CERROR("can't find profile for %s\n",
5875 lustre_cfg_string(cfg, 0));
5876 GOTO(cleanup_mem, rc = -EINVAL);
5879 lustre_cfg_bufs_reset(bufs, qmtname);
5880 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
5881 lustre_cfg_bufs_set_string(bufs, 2, uuid);
5882 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
5884 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5886 GOTO(put_profile, rc = -ENOMEM);
5887 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
5889 rc = class_attach(lcfg);
5891 GOTO(lcfg_cleanup, rc);
5893 obd = class_name2obd(qmtname);
5895 CERROR("Can not find obd %s (%s in config)\n", qmtname,
5896 lustre_cfg_string(cfg, 0));
5897 GOTO(lcfg_cleanup, rc = -EINVAL);
5900 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5902 lustre_cfg_bufs_reset(bufs, qmtname);
5903 lustre_cfg_bufs_set_string(bufs, 1, uuid);
5904 lustre_cfg_bufs_set_string(bufs, 2, dev);
5906 /* for quota, the next device should be the OSD device */
5907 lustre_cfg_bufs_set_string(bufs, 3,
5908 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
5910 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5912 GOTO(class_detach, rc = -ENOMEM);
5913 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
5915 rc = class_setup(obd, lcfg);
5917 GOTO(class_detach, rc);
5919 mdt->mdt_qmt_dev = obd->obd_lu_dev;
5921 /* configure local quota objects */
5922 if (CFS_FAIL_CHECK(OBD_FAIL_QUOTA_INIT))
5925 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
5929 GOTO(class_cleanup, rc);
5931 /* connect to quota master target */
5932 data->ocd_connect_flags = OBD_CONNECT_VERSION;
5933 data->ocd_version = LUSTRE_VERSION_CODE;
5934 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
5937 CERROR("cannot connect to quota master device %s (%d)\n",
5939 GOTO(class_cleanup, rc);
5945 class_manual_cleanup(obd);
5946 mdt->mdt_qmt_dev = NULL;
5947 GOTO(lcfg_cleanup, rc);
5951 class_detach(obd, lcfg);
5953 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5955 class_put_profile(lprof);
5960 OBD_FREE(qmtname, MAX_OBD_NAME);
5962 OBD_FREE(uuid, UUID_MAX);
5968 /* Shutdown quota master target associated with mdt */
5969 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
5973 if (mdt->mdt_qmt_exp == NULL)
5975 LASSERT(mdt->mdt_qmt_dev != NULL);
5977 /* the qmt automatically shuts down when the mdt disconnects */
5978 obd_disconnect(mdt->mdt_qmt_exp);
5979 mdt->mdt_qmt_exp = NULL;
5980 mdt->mdt_qmt_dev = NULL;
5984 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
5985 * for now. This will be removed along with converting rest of MDT code
5986 * to use tgt_session_info
5988 static int mdt_tgt_getxattr(struct tgt_session_info *tsi)
5990 struct mdt_thread_info *info = tsi2mdt_info(tsi);
5993 if (unlikely(info->mti_object == NULL))
5996 rc = mdt_getxattr(info);
5998 mdt_thread_info_fini(info);
6002 static int mdt_llog_open(struct tgt_session_info *tsi)
6006 if (!mdt_changelog_allow(tsi2mdt_info(tsi)))
6007 RETURN(err_serious(-EACCES));
6009 RETURN(tgt_llog_open(tsi));
6012 #define OBD_FAIL_OST_READ_NET OBD_FAIL_OST_BRW_NET
6013 #define OBD_FAIL_OST_WRITE_NET OBD_FAIL_OST_BRW_NET
6014 #define OST_BRW_READ OST_READ
6015 #define OST_BRW_WRITE OST_WRITE
6017 static struct tgt_handler mdt_tgt_handlers[] = {
6018 TGT_RPC_HANDLER(MDS_FIRST_OPC,
6019 0, MDS_CONNECT, mdt_tgt_connect,
6020 &RQF_CONNECT, LUSTRE_OBD_VERSION),
6021 TGT_RPC_HANDLER(MDS_FIRST_OPC,
6022 0, MDS_DISCONNECT, tgt_disconnect,
6023 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
6024 TGT_RPC_HANDLER(MDS_FIRST_OPC,
6025 HAS_REPLY, MDS_SET_INFO, mdt_set_info,
6026 &RQF_MDT_SET_INFO, LUSTRE_MDS_VERSION),
6027 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
6028 TGT_MDT_HDL(HAS_REPLY, MDS_GET_ROOT, mdt_get_root),
6029 TGT_MDT_HDL(HAS_BODY, MDS_GETATTR, mdt_getattr),
6030 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_GETATTR_NAME,
6032 TGT_MDT_HDL(HAS_BODY, MDS_GETXATTR, mdt_tgt_getxattr),
6033 TGT_MDT_HDL(HAS_REPLY, MDS_STATFS, mdt_statfs),
6034 TGT_MDT_HDL(IS_MUTABLE, MDS_REINT, mdt_reint),
6035 TGT_MDT_HDL(HAS_BODY, MDS_CLOSE, mdt_close),
6036 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_READPAGE, mdt_readpage),
6037 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_SYNC, mdt_sync),
6038 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
6039 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_PROGRESS,
6041 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_CT_REGISTER,
6042 mdt_hsm_ct_register),
6043 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_CT_UNREGISTER,
6044 mdt_hsm_ct_unregister),
6045 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_STATE_GET,
6047 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_STATE_SET,
6049 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_ACTION, mdt_hsm_action),
6050 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_REQUEST,
6052 TGT_MDT_HDL(HAS_KEY | HAS_BODY | HAS_REPLY | IS_MUTABLE,
6055 TGT_MDT_HDL(IS_MUTABLE, MDS_RMFID, mdt_rmfid),
6056 TGT_MDT_HDL(IS_MUTABLE, MDS_BATCH, mdt_batch),
6059 static struct tgt_handler mdt_io_ops[] = {
6060 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY, OST_BRW_READ, tgt_brw_read,
6062 TGT_OST_HDL_HP(HAS_BODY | IS_MUTABLE, OST_BRW_WRITE, tgt_brw_write,
6064 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY | IS_MUTABLE,
6065 OST_PUNCH, mdt_punch_hdl,
6067 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_SYNC, mdt_data_sync),
6068 TGT_OST_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, OST_FALLOCATE,
6070 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_SEEK, tgt_lseek),
6071 TGT_RPC_HANDLER(OST_FIRST_OPC,
6072 0, OST_SET_INFO, mdt_io_set_info,
6073 &RQF_OBD_SET_INFO, LUSTRE_OST_VERSION),
6076 static struct tgt_handler mdt_sec_ctx_ops[] = {
6077 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
6078 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT, mdt_sec_ctx_handle),
6079 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
6082 static struct tgt_handler mdt_quota_ops[] = {
6083 TGT_QUOTA_HDL(HAS_REPLY, QUOTA_DQACQ, mdt_quota_dqacq),
6086 static struct tgt_handler mdt_llog_handlers[] = {
6087 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_CREATE, mdt_llog_open),
6088 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
6089 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
6090 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
6093 static struct tgt_opc_slice mdt_common_slice[] = {
6095 .tos_opc_start = MDS_FIRST_OPC,
6096 .tos_opc_end = MDS_LAST_OPC,
6097 .tos_hs = mdt_tgt_handlers
6100 .tos_opc_start = OBD_FIRST_OPC,
6101 .tos_opc_end = OBD_LAST_OPC,
6102 .tos_hs = tgt_obd_handlers
6105 .tos_opc_start = LDLM_FIRST_OPC,
6106 .tos_opc_end = LDLM_LAST_OPC,
6107 .tos_hs = tgt_dlm_handlers
6110 .tos_opc_start = SEC_FIRST_OPC,
6111 .tos_opc_end = SEC_LAST_OPC,
6112 .tos_hs = mdt_sec_ctx_ops
6115 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
6116 .tos_opc_end = OUT_UPDATE_LAST_OPC,
6117 .tos_hs = tgt_out_handlers
6120 .tos_opc_start = FLD_FIRST_OPC,
6121 .tos_opc_end = FLD_LAST_OPC,
6122 .tos_hs = fld_handlers
6125 .tos_opc_start = SEQ_FIRST_OPC,
6126 .tos_opc_end = SEQ_LAST_OPC,
6127 .tos_hs = seq_handlers
6130 .tos_opc_start = QUOTA_DQACQ,
6131 .tos_opc_end = QUOTA_LAST_OPC,
6132 .tos_hs = mdt_quota_ops
6135 .tos_opc_start = LLOG_FIRST_OPC,
6136 .tos_opc_end = LLOG_LAST_OPC,
6137 .tos_hs = mdt_llog_handlers
6140 .tos_opc_start = LFSCK_FIRST_OPC,
6141 .tos_opc_end = LFSCK_LAST_OPC,
6142 .tos_hs = tgt_lfsck_handlers
6145 .tos_opc_start = OST_FIRST_OPC,
6146 .tos_opc_end = OST_LAST_OPC,
6147 .tos_hs = mdt_io_ops
6154 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
6156 struct md_device *next = m->mdt_child;
6157 struct lu_device *d = &m->mdt_lu_dev;
6158 struct obd_device *obd = mdt2obd_dev(m);
6159 struct lfsck_stop stop;
6162 stop.ls_status = LS_PAUSED;
6164 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
6166 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
6168 mdt_restriper_stop(m);
6169 ping_evictor_stop();
6171 /* Remove the HSM /proc entry so the coordinator cannot be
6172 * restarted by a user while it's shutting down.
6174 mdt_hsm_cdt_stop(m);
6176 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
6177 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
6179 if (m->mdt_namespace != NULL)
6180 ldlm_namespace_free_prior(m->mdt_namespace, NULL,
6181 d->ld_obd->obd_force);
6183 obd_exports_barrier(obd);
6184 obd_zombie_barrier();
6186 mdt_quota_fini(env, m);
6188 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
6190 /* Calling the cleanup functions in the same order as in the mdt_init0
6193 mdt_tunables_fini(m);
6195 target_recovery_fini(obd);
6196 upcall_cache_cleanup(m->mdt_identity_cache);
6197 m->mdt_identity_cache = NULL;
6199 tgt_fini(env, &m->mdt_lut);
6201 mdt_hsm_cdt_fini(m);
6203 if (m->mdt_los != NULL) {
6204 local_oid_storage_fini(env, m->mdt_los);
6208 if (m->mdt_namespace != NULL) {
6209 ldlm_namespace_free_post(m->mdt_namespace);
6210 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
6213 if (m->mdt_md_root != NULL) {
6214 mdt_object_put(env, m->mdt_md_root);
6215 m->mdt_md_root = NULL;
6218 mdt_seq_fini(env, m);
6220 mdt_fld_fini(env, m);
6225 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
6227 LASSERT(atomic_read(&d->ld_ref) == 0);
6229 server_put_mount(mdt_obd_name(m), true);
6234 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
6236 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
6237 struct lu_device_type *ldt, struct lustre_cfg *cfg)
6239 const struct dt_device_param *dt_conf;
6240 struct mdt_thread_info *info;
6241 struct obd_device *obd;
6242 const char *dev = lustre_cfg_string(cfg, 0);
6243 const char *num = lustre_cfg_string(cfg, 2);
6244 struct tg_grants_data *tgd = &m->mdt_lut.lut_tgd;
6245 struct lustre_mount_info *lmi = NULL;
6246 struct lustre_sb_info *lsi;
6248 struct seq_server_site *ss_site;
6249 const char *identity_upcall = "NONE";
6250 struct md_device *next;
6258 lu_device_init(&m->mdt_lu_dev, ldt);
6260 * Environment (env) might be missing mdt_thread_key values at that
6261 * point, if device is allocated when mdt_thread_key is in QUIESCENT
6264 * Usually device allocation path doesn't use module key values, but
6265 * mdt has to do a lot of work here, so allocate key value.
6267 rc = lu_env_refill((struct lu_env *)env);
6271 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
6272 LASSERT(info != NULL);
6274 obd = class_name2obd(dev);
6275 LASSERT(obd != NULL);
6277 m->mdt_max_mdsize = MAX_MD_SIZE_OLD;
6278 m->mdt_evict_tgt_nids = 1;
6279 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
6281 lmi = server_get_mount(dev);
6283 CERROR("Cannot get mount info for %s!\n", dev);
6286 lsi = s2lsi(lmi->lmi_sb);
6287 LASSERT(lsi->lsi_lmd);
6288 /* CMD is supported only in IAM mode */
6290 rc = kstrtol(num, 10, &node_id);
6295 if (test_bit(LMD_FLG_SKIP_LFSCK, lsi->lsi_lmd->lmd_flags))
6296 m->mdt_skip_lfsck = 1;
6297 if (test_bit(LMD_FLG_NO_CREATE, lsi->lsi_lmd->lmd_flags))
6298 m->mdt_lut.lut_no_create = 1;
6301 /* Just try to get a DoM lock by default. Otherwise, having a group
6302 * lock granted, it may get blocked for a long time.
6304 m->mdt_opts.mo_dom_lock = TRYLOCK_DOM_ON_OPEN;
6305 /* DoM files are read at open and data is packed in the reply */
6306 m->mdt_dom_read_open = 1;
6308 m->mdt_squash.rsi_uid = 0;
6309 m->mdt_squash.rsi_gid = 0;
6310 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
6311 spin_lock_init(&m->mdt_squash.rsi_lock);
6312 spin_lock_init(&m->mdt_lock);
6313 m->mdt_enable_chprojid_gid = 0;
6314 m->mdt_enable_dir_migration = 1;
6315 m->mdt_enable_dir_restripe = 0;
6316 m->mdt_enable_dir_auto_split = 0;
6317 m->mdt_enable_parallel_rename_dir = 1;
6318 m->mdt_enable_parallel_rename_file = 1;
6319 m->mdt_enable_parallel_rename_crossdir = 1;
6320 m->mdt_enable_remote_dir = 1;
6321 m->mdt_enable_remote_dir_gid = 0;
6322 m->mdt_enable_remote_rename = 1;
6323 m->mdt_enable_striped_dir = 1;
6324 m->mdt_enable_dmv_implicit_inherit = 1;
6325 m->mdt_dir_restripe_nsonly = 1;
6326 m->mdt_max_mod_rpcs_in_flight = OBD_MAX_RIF_DEFAULT;
6328 atomic_set(&m->mdt_mds_mds_conns, 0);
6329 atomic_set(&m->mdt_async_commit_count, 0);
6330 atomic_set(&m->mdt_dmv_old_client_count, 0);
6332 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
6333 m->mdt_lu_dev.ld_obd = obd;
6334 /* Set this lu_device to obd for error handling purposes. */
6335 obd->obd_lu_dev = &m->mdt_lu_dev;
6337 strncpy(m->mdt_job_xattr, XATTR_NAME_JOB_DEFAULT, XATTR_JOB_MAX_LEN);
6339 /* init the stack */
6340 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
6342 CERROR("%s: Can't init device stack, rc %d\n",
6343 mdt_obd_name(m), rc);
6348 ss_site = mdt_seq_site(m);
6349 s->ld_seq_site = ss_site;
6352 /* set server index */
6353 ss_site->ss_node_id = node_id;
6355 /* failover is the default
6356 * FIXME: we do not failout mds0/mgs, which may cause some problems.
6357 * assumed whose ss_node_id == 0 XXX
6359 obd->obd_replayable = 1;
6360 /* No connection accepted until configurations will finish */
6361 obd->obd_no_conn = 1;
6363 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
6364 char *str = lustre_cfg_string(cfg, 4);
6366 if (strchr(str, 'n')) {
6367 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
6368 obd->obd_replayable = 0;
6372 rc = mdt_fld_init(env, mdt_obd_name(m), m);
6374 GOTO(err_fini_stack, rc);
6376 rc = mdt_seq_init(env, m);
6378 GOTO(err_fini_fld, rc);
6380 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
6381 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
6382 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
6383 LDLM_NAMESPACE_SERVER,
6384 LDLM_NAMESPACE_GREEDY,
6386 if (IS_ERR(m->mdt_namespace)) {
6387 rc = PTR_ERR(m->mdt_namespace);
6388 CERROR("%s: unable to create server namespace: rc = %d\n",
6390 m->mdt_namespace = NULL;
6391 GOTO(err_fini_seq, rc);
6394 m->mdt_namespace->ns_lvbp = m;
6395 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
6397 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
6398 /* set obd_namespace for compatibility with old code */
6399 obd->obd_namespace = m->mdt_namespace;
6401 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
6402 OBD_FAIL_MDS_ALL_REQUEST_NET,
6403 OBD_FAIL_MDS_ALL_REPLY_NET);
6405 GOTO(err_free_ns, rc);
6407 /* Amount of available space excluded from granting and reserved
6408 * for metadata. It is a percentage of the total MDT size.
6410 tgd->tgd_reserved_pcnt = 10;
6412 if (ONE_MB_BRW_SIZE < (1U << tgd->tgd_blockbits))
6413 m->mdt_brw_size = 1U << tgd->tgd_blockbits;
6415 m->mdt_brw_size = ONE_MB_BRW_SIZE;
6417 if (CFS_FAIL_CHECK(OBD_FAIL_MDS_FS_SETUP))
6418 GOTO(err_tgt, rc = -ENOENT);
6420 fid.f_seq = FID_SEQ_LOCAL_NAME;
6423 rc = local_oid_storage_init(env, m->mdt_bottom, &fid, &m->mdt_los);
6427 rc = mdt_hsm_cdt_init(m);
6429 CERROR("%s: error initializing coordinator, rc %d\n",
6430 mdt_obd_name(m), rc);
6431 GOTO(err_los_fini, rc);
6434 tgt_adapt_sptlrpc_conf(&m->mdt_lut);
6436 next = m->mdt_child;
6437 dt_conf = next->md_ops->mdo_dtconf_get(env, next);
6439 mntopts = dt_conf->ddp_mntopts;
6441 if (mntopts & MNTOPT_USERXATTR)
6442 m->mdt_opts.mo_user_xattr = 1;
6444 m->mdt_opts.mo_user_xattr = 0;
6446 m->mdt_max_ea_size = dt_conf->ddp_max_ea_size;
6448 if (mntopts & MNTOPT_ACL)
6449 m->mdt_opts.mo_acl = 1;
6451 m->mdt_opts.mo_acl = 0;
6453 m->mdt_enable_strict_som = 1;
6455 /* XXX: to support suppgid for ACL, we enable identity_upcall
6456 * by default, otherwise, maybe got unexpected -EACCESS.
6458 if (m->mdt_opts.mo_acl)
6459 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
6461 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
6463 UC_IDCACHE_HASH_SIZE,
6464 1200, /* entry expire: 20 mn */
6465 30, /* acquire expire: 30 s */
6466 true, /* acquire can replay */
6467 &mdt_identity_upcall_cache_ops);
6468 if (IS_ERR(m->mdt_identity_cache)) {
6469 rc = PTR_ERR(m->mdt_identity_cache);
6470 m->mdt_identity_cache = NULL;
6471 GOTO(err_free_hsm, rc);
6474 rc = mdt_tunables_init(m, dev);
6476 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
6477 GOTO(err_recovery, rc);
6480 rc = mdt_quota_init(env, m, cfg);
6482 GOTO(err_procfs, rc);
6484 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
6485 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
6486 "mdt_ldlm_client", m->mdt_ldlm_client);
6488 ping_evictor_start();
6490 /* recovery will be started upon mdt_prepare() when the whole stack is
6491 * complete and ready to serve the requests
6494 /* Reduce the initial timeout on an MDS because it doesn't need such
6495 * a long timeout as an OST does. Adaptive timeouts will adjust this
6496 * value appropriately.
6498 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
6499 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
6501 if (test_bit(LMD_FLG_LOCAL_RECOV, lsi->lsi_lmd->lmd_flags))
6502 m->mdt_lut.lut_local_recovery = 1;
6504 rc = mdt_restriper_start(m);
6506 GOTO(err_ping_evictor, rc);
6511 ping_evictor_stop();
6513 mdt_tunables_fini(m);
6515 upcall_cache_cleanup(m->mdt_identity_cache);
6516 m->mdt_identity_cache = NULL;
6518 mdt_hsm_cdt_fini(m);
6520 local_oid_storage_fini(env, m->mdt_los);
6523 /* keep recoverable clients */
6525 target_recovery_fini(obd);
6526 obd_exports_barrier(obd);
6527 obd_zombie_barrier();
6528 tgt_fini(env, &m->mdt_lut);
6530 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
6531 obd->obd_namespace = m->mdt_namespace = NULL;
6533 mdt_seq_fini(env, m);
6535 mdt_fld_fini(env, m);
6537 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
6540 server_put_mount(dev, true);
6544 /* For interoperability, the left element is old parameter, the right one
6545 * is the new version of the parameter, if some parameter is deprecated,
6546 * the new version should be set as NULL.
6548 static struct cfg_interop_param mdt_interop_param[] = {
6549 { "mdt.group_upcall", NULL },
6550 { "mdt.quota_type", NULL },
6551 { "mdd.quota_type", NULL },
6552 { "mdt.som", NULL },
6553 { "mdt.rootsquash", "mdt.root_squash" },
6554 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
6558 /* used by MGS to process specific configurations */
6559 static int mdt_process_config(const struct lu_env *env,
6560 struct lu_device *d, struct lustre_cfg *cfg)
6562 struct mdt_device *m = mdt_dev(d);
6563 struct md_device *md_next = m->mdt_child;
6564 struct lu_device *next = md2lu_dev(md_next);
6569 switch (cfg->lcfg_command) {
6571 struct obd_device *obd = d->ld_obd;
6572 /* For interoperability */
6573 struct cfg_interop_param *ptr = NULL;
6574 struct lustre_cfg *old_cfg = NULL;
6578 param = lustre_cfg_string(cfg, 1);
6579 if (param == NULL) {
6580 CERROR("param is empty\n");
6585 ptr = class_find_old_param(param, mdt_interop_param);
6587 if (ptr->new_param == NULL) {
6589 CWARN("For interoperability, skip this %s. It is obsolete.\n",
6594 CWARN("Found old param %s, changed it to %s.\n",
6595 ptr->old_param, ptr->new_param);
6598 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
6605 count = class_modify_config(cfg, PARAM_MDT,
6606 &obd->obd_kset.kobj);
6608 struct coordinator *cdt = &m->mdt_coordinator;
6610 /* is it an HSM var ? */
6611 count = class_modify_config(cfg, PARAM_HSM,
6612 &cdt->cdt_hsm_kobj);
6614 /* we don't understand; pass it on */
6615 rc = next->ld_ops->ldo_process_config(env, next,
6618 rc = count > 0 ? 0 : count;
6620 rc = count > 0 ? 0 : count;
6624 OBD_FREE(cfg, lustre_cfg_len(cfg->lcfg_bufcount,
6625 cfg->lcfg_buflens));
6629 /* others are passed further */
6630 rc = next->ld_ops->ldo_process_config(env, next, cfg);
6636 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
6637 const struct lu_object_header *hdr,
6638 struct lu_device *d)
6640 struct mdt_object *mo;
6644 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
6646 struct lu_object *o;
6647 struct lu_object_header *h;
6650 h = &mo->mot_header;
6651 lu_object_header_init(h);
6652 lu_object_init(o, h, d);
6653 lu_object_add_top(h, o);
6654 o->lo_ops = &mdt_obj_ops;
6655 spin_lock_init(&mo->mot_write_lock);
6656 mutex_init(&mo->mot_som_mutex);
6657 mutex_init(&mo->mot_lov_mutex);
6658 init_rwsem(&mo->mot_dom_sem);
6659 init_rwsem(&mo->mot_open_sem);
6660 atomic_set(&mo->mot_open_count, 0);
6661 mo->mot_restripe_offset = 0;
6662 INIT_LIST_HEAD(&mo->mot_restripe_linkage);
6663 mo->mot_lsom_size = 0;
6664 mo->mot_lsom_blocks = 0;
6665 mo->mot_lsom_inited = false;
6671 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
6672 const struct lu_object_conf *unused)
6674 struct mdt_device *d = mdt_dev(o->lo_dev);
6675 struct lu_device *under;
6676 struct lu_object *below;
6681 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
6682 PFID(lu_object_fid(o)));
6684 under = &d->mdt_child->md_lu_dev;
6685 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
6687 lu_object_add(o, below);
6694 static void mdt_object_free_rcu(struct rcu_head *head)
6696 struct mdt_object *mo = container_of(head, struct mdt_object,
6697 mot_header.loh_rcu);
6699 kmem_cache_free(mdt_object_kmem, mo);
6702 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
6704 struct mdt_object *mo = mdt_obj(o);
6705 struct lu_object_header *h;
6710 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
6711 PFID(lu_object_fid(o)));
6713 LASSERT(atomic_read(&mo->mot_open_count) == 0);
6714 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
6717 lu_object_header_fini(h);
6718 OBD_FREE_PRE(mo, sizeof(*mo), "slab-freed");
6719 call_rcu(&mo->mot_header.loh_rcu, mdt_object_free_rcu);
6724 static int mdt_object_print(const struct lu_env *env, void *cookie,
6725 lu_printer_t p, const struct lu_object *o)
6727 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
6729 return (*p)(env, cookie,
6730 LUSTRE_MDT_NAME"-object@%p(%s %s, writecount=%d)",
6731 mdto, mdto->mot_lov_created ? "lov_created" : "",
6732 mdto->mot_cache_attr ? "cache_attr" : "",
6733 mdto->mot_write_count);
6736 static int mdt_prepare(const struct lu_env *env,
6737 struct lu_device *pdev,
6738 struct lu_device *cdev)
6740 struct mdt_device *mdt = mdt_dev(cdev);
6741 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
6742 struct obd_device *obd = cdev->ld_obd;
6749 rc = next->ld_ops->ldo_prepare(env, cdev, next);
6753 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
6757 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
6761 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
6762 /* The LFSCK instance is registered just now, so it must be there when
6763 * register the namespace to such instance.
6765 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
6767 if (mdt->mdt_seq_site.ss_node_id == 0) {
6768 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
6769 &mdt->mdt_md_root_fid);
6774 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
6776 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
6777 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
6778 LASSERT(obd->obd_no_conn);
6779 spin_lock(&obd->obd_dev_lock);
6780 obd->obd_no_conn = 0;
6781 spin_unlock(&obd->obd_dev_lock);
6783 if (obd->obd_recovering == 0)
6784 mdt_postrecov(env, mdt);
6789 const struct lu_device_operations mdt_lu_ops = {
6790 .ldo_object_alloc = mdt_object_alloc,
6791 .ldo_process_config = mdt_process_config,
6792 .ldo_prepare = mdt_prepare,
6795 static const struct lu_object_operations mdt_obj_ops = {
6796 .loo_object_init = mdt_object_init,
6797 .loo_object_free = mdt_object_free,
6798 .loo_object_print = mdt_object_print
6801 static int mdt_obd_set_info_async(const struct lu_env *env,
6802 struct obd_export *exp,
6803 __u32 keylen, void *key,
6804 __u32 vallen, void *val,
6805 struct ptlrpc_request_set *set)
6811 if (KEY_IS(KEY_SPTLRPC_CONF)) {
6812 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp));
6819 static inline void mdt_enable_slc(struct mdt_device *mdt)
6821 if (mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_NEVER)
6822 mdt->mdt_lut.lut_sync_lock_cancel = SYNC_LOCK_CANCEL_BLOCKING;
6825 static inline void mdt_disable_slc(struct mdt_device *mdt)
6827 if (mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_BLOCKING)
6828 mdt->mdt_lut.lut_sync_lock_cancel = SYNC_LOCK_CANCEL_NEVER;
6832 * Match client and server connection feature flags.
6834 * Compute the compatibility flags for a connection request based on
6835 * features mutually supported by client and server.
6837 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
6838 * must not be updated here, otherwise a partially initialized value may
6839 * be exposed. After the connection request is successfully processed,
6840 * the top-level MDT connect request handler atomically updates the export
6841 * connect flags from the obd_connect_data::ocd_connect_flags field of the
6842 * reply. \see mdt_connect().
6844 * Before 2.7.50 clients will send a struct obd_connect_data_v1 rather than a
6845 * full struct obd_connect_data. So care must be taken when accessing fields
6846 * that are not present in struct obd_connect_data_v1. See LU-16.
6848 * \param exp the obd_export associated with this client/target pair
6849 * \param mdt the target device for the connection
6850 * \param data stores data for this connect request
6853 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
6854 * \retval -EBADE client and server feature requirements are incompatible
6856 static int mdt_connect_internal(const struct lu_env *env,
6857 struct obd_export *exp,
6858 struct mdt_device *mdt,
6859 struct obd_connect_data *data, bool reconnect)
6861 const char *obd_name = mdt_obd_name(mdt);
6863 LASSERT(data != NULL);
6865 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
6867 if (mdt->mdt_bottom->dd_rdonly &&
6868 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
6869 !(data->ocd_connect_flags & OBD_CONNECT_RDONLY))
6872 if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
6873 data->ocd_connect_flags2 &= MDT_CONNECT_SUPPORTED2;
6875 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
6877 if (!mdt->mdt_opts.mo_acl)
6878 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
6880 if (!mdt->mdt_opts.mo_user_xattr)
6881 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
6883 if (OCD_HAS_FLAG(data, BRW_SIZE)) {
6884 data->ocd_brw_size = min(data->ocd_brw_size,
6886 if (data->ocd_brw_size == 0) {
6887 CERROR("%s: cli %s/%p ocd_connect_flags: %#llx ocd_version: %x ocd_grant: %d ocd_index: %u ocd_brw_size unexpectedly zero, network data corruption? Refusing to connect this client\n", obd_name, exp->exp_client_uuid.uuid,
6888 exp, data->ocd_connect_flags, data->ocd_version,
6889 data->ocd_grant, data->ocd_index);
6894 if (OCD_HAS_FLAG(data, GRANT_PARAM)) {
6895 struct dt_device_param *ddp = &mdt->mdt_lut.lut_dt_conf;
6897 /* client is reporting its page size, for future use */
6898 exp->exp_target_data.ted_pagebits = data->ocd_grant_blkbits;
6899 data->ocd_grant_blkbits = mdt->mdt_lut.lut_tgd.tgd_blockbits;
6900 /* ddp_inodespace may not be power-of-two value, eg. for ldiskfs
6901 * it's LDISKFS_DIR_REC_LEN(20) = 28.
6903 data->ocd_grant_inobits = fls(ddp->ddp_inodespace - 1);
6904 /* ocd_grant_tax_kb is in 1K byte blocks */
6905 data->ocd_grant_tax_kb = ddp->ddp_extent_tax >> 10;
6906 data->ocd_grant_max_blks = ddp->ddp_max_extent_blks;
6909 /* Save connect_data we have so far because tgt_grant_connect()
6910 * uses it to calculate grant, and we want to save the client
6911 * version before it is overwritten by LUSTRE_VERSION_CODE.
6913 exp->exp_connect_data = *data;
6914 if (OCD_HAS_FLAG(data, GRANT))
6915 tgt_grant_connect(env, exp, data, !reconnect);
6917 if (OCD_HAS_FLAG(data, MAXBYTES))
6918 data->ocd_maxbytes = mdt->mdt_lut.lut_dt_conf.ddp_maxbytes;
6920 /* NB: Disregard the rule against updating
6921 * exp_connect_data.ocd_connect_flags in this case, since
6922 * tgt_client_new() needs to know if this is a lightweight
6923 * connection, and it is safe to expose this flag before
6924 * connection processing completes.
6926 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
6927 spin_lock(&exp->exp_lock);
6928 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
6929 spin_unlock(&exp->exp_lock);
6932 data->ocd_version = LUSTRE_VERSION_CODE;
6934 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
6935 CWARN("%s: MDS requires FID support, but client not\n",
6940 if (OCD_HAS_FLAG(data, PINGLESS)) {
6941 if (ptlrpc_pinger_suppress_pings()) {
6942 spin_lock(&exp->exp_obd->obd_dev_lock);
6943 list_del_init(&exp->exp_obd_chain_timed);
6944 spin_unlock(&exp->exp_obd->obd_dev_lock);
6946 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
6950 data->ocd_max_easize = mdt->mdt_max_ea_size;
6952 /* NB: Disregard the rule against updating
6953 * exp_connect_data.ocd_connect_flags in this case, since
6954 * tgt_client_new() needs to know if this is client supports
6955 * multiple modify RPCs, and it is safe to expose this flag before
6956 * connection processing completes.
6958 if (data->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS) {
6959 if (mdt_max_mod_rpcs_changed(mdt))
6960 /* The new mdt.*.max_mod_rpcs_in_flight parameter
6961 * has not changed since initialization, but the
6962 * deprecated module parameter was changed,
6963 * so use that instead.
6965 data->ocd_maxmodrpcs = max_mod_rpcs_per_client;
6967 data->ocd_maxmodrpcs = mdt->mdt_max_mod_rpcs_in_flight;
6968 spin_lock(&exp->exp_lock);
6969 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_MULTIMODRPCS;
6970 spin_unlock(&exp->exp_lock);
6973 if (OCD_HAS_FLAG(data, CKSUM)) {
6974 __u32 cksum_types = data->ocd_cksum_types;
6976 tgt_mask_cksum_types(&mdt->mdt_lut, &data->ocd_cksum_types);
6978 if (unlikely(data->ocd_cksum_types == 0)) {
6979 CERROR("%s: Connect with checksum support but no ocd_cksum_types is set\n",
6980 exp->exp_obd->obd_name);
6984 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return %x\n",
6985 exp->exp_obd->obd_name, obd_export_nid2str(exp),
6986 cksum_types, data->ocd_cksum_types);
6988 /* Client not support OBD_CONNECT_CKSUM? fall back to CRC32 */
6989 CDEBUG(D_RPCTRACE, "%s: cli %s does not support OBD_CONNECT_CKSUM, CRC32 will be used\n",
6990 exp->exp_obd->obd_name, obd_export_nid2str(exp));
6993 if ((data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
6994 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
6995 atomic_inc(&mdt->mdt_mds_mds_conns);
6996 mdt_enable_slc(mdt);
6999 if (!mdt->mdt_lut.lut_dt_conf.ddp_has_lseek_data_hole)
7000 data->ocd_connect_flags2 &= ~OBD_CONNECT2_LSEEK;
7002 if (!OCD_HAS_FLAG(data, MDS_MDS) && !OCD_HAS_FLAG(data, LIGHTWEIGHT) &&
7003 !OCD_HAS_FLAG2(data, DMV_IMP_INHERIT)) {
7004 atomic_inc(&mdt->mdt_dmv_old_client_count);
7005 mdt->mdt_enable_dmv_implicit_inherit = 0;
7011 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
7012 struct mdt_thread_info *info,
7013 struct mdt_file_data *mfd)
7015 struct lu_context ses;
7020 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
7025 lu_context_enter(&ses);
7027 mdt_ucred(info)->uc_valid = UCRED_OLD;
7028 /* do not let rbac interfere with dirty flag internal system event */
7029 mdt_ucred(info)->uc_rbac_file_perms = 1;
7030 mdt_ucred(info)->uc_rbac_dne_ops = 1;
7031 mdt_ucred(info)->uc_rbac_quota_ops = 1;
7032 mdt_ucred(info)->uc_rbac_byfid_ops = 1;
7033 mdt_ucred(info)->uc_rbac_chlg_ops = 1;
7034 mdt_ucred(info)->uc_rbac_fscrypt_admin = 1;
7035 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
7037 lu_context_exit(&ses);
7038 lu_context_fini(&ses);
7044 static int mdt_export_cleanup(struct obd_export *exp)
7046 LIST_HEAD(closing_list);
7047 struct mdt_export_data *med = &exp->exp_mdt_data;
7048 struct obd_device *obd = exp->exp_obd;
7049 struct mdt_device *mdt;
7050 struct mdt_thread_info *info;
7052 struct mdt_file_data *mfd, *n;
7057 spin_lock(&med->med_open_lock);
7058 while (!list_empty(&med->med_open_head)) {
7059 struct list_head *tmp = med->med_open_head.next;
7061 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
7063 /* Remove mfd handle so it can't be found again.
7064 * We are consuming the mfd_list reference here.
7066 class_handle_unhash(&mfd->mfd_open_handle);
7067 list_move_tail(&mfd->mfd_list, &closing_list);
7069 spin_unlock(&med->med_open_lock);
7070 mdt = mdt_dev(obd->obd_lu_dev);
7071 LASSERT(mdt != NULL);
7073 rc = lu_env_init(&env, LCT_MD_THREAD);
7077 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
7078 LASSERT(info != NULL);
7079 memset(info, 0, sizeof(*info));
7080 info->mti_env = &env;
7081 info->mti_mdt = mdt;
7082 info->mti_exp = exp;
7084 if (!list_empty(&closing_list)) {
7085 struct md_attr *ma = &info->mti_attr;
7087 /* Close any open files (which may cause orphan unlinking). */
7088 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
7089 list_del_init(&mfd->mfd_list);
7090 ma->ma_need = ma->ma_valid = 0;
7092 /* This file is being closed due to an eviction, it
7093 * could have been modified and now dirty regarding to
7094 * HSM archive, check this!
7095 * The logic here is to mark a file dirty if there's a
7096 * chance it was dirtied before the client was evicted,
7097 * so that we don't have to wait for a release attempt
7098 * before finding out the file was actually dirty and
7099 * fail the release. Aggressively marking it dirty here
7100 * will cause the policy engine to attempt to
7101 * re-archive it; when rearchiving, we can compare the
7102 * current version to the HSM data_version and make the
7103 * archive request into a noop if it's not actually
7106 if (mfd->mfd_open_flags & MDS_FMODE_WRITE)
7107 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
7109 /* Don't unlink orphan on failover umount, LU-184 */
7110 if (exp->exp_flags & OBD_OPT_FAILOVER ||
7111 exp->exp_obd->obd_stopping) {
7112 ma->ma_valid = MA_FLAGS;
7113 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
7115 ma->ma_valid |= MA_FORCE_LOG;
7116 mdt_mfd_close(info, mfd);
7119 info->mti_mdt = NULL;
7120 /* cleanup client slot early */
7121 /* Do not erase record for recoverable client. */
7122 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
7123 tgt_client_del(&env, exp);
7129 static int mdt_obd_disconnect(struct obd_export *exp)
7131 struct obd_connect_data *data = &exp->exp_connect_data;
7132 struct mdt_device *mdt = mdt_dev(exp->exp_obd->obd_lu_dev);
7138 class_export_get(exp);
7140 if (OCD_HAS_FLAG(data, MDS_MDS) && !OCD_HAS_FLAG(data, LIGHTWEIGHT) &&
7141 atomic_dec_and_test(&mdt->mdt_mds_mds_conns))
7142 mdt_disable_slc(mdt);
7144 if (!OCD_HAS_FLAG(data, MDS_MDS) && !OCD_HAS_FLAG(data, LIGHTWEIGHT) &&
7145 !OCD_HAS_FLAG2(data, DMV_IMP_INHERIT) &&
7146 atomic_dec_and_test(&mdt->mdt_dmv_old_client_count))
7147 mdt->mdt_enable_dmv_implicit_inherit = 1;
7149 rc = server_disconnect_export(exp);
7151 CDEBUG(D_IOCTL, "server disconnect error: rc = %d\n", rc);
7153 tgt_grant_discard(exp);
7155 if (!(exp->exp_flags & OBD_OPT_FORCE))
7156 tgt_grant_sanity_check(exp->exp_obd, __func__);
7158 rc = mdt_export_cleanup(exp);
7159 nodemap_del_member(exp);
7160 class_export_put(exp);
7164 /* mds_connect copy */
7165 static int mdt_obd_connect(const struct lu_env *env,
7166 struct obd_export **exp, struct obd_device *obd,
7167 struct obd_uuid *cluuid,
7168 struct obd_connect_data *data,
7171 struct obd_export *lexp;
7172 struct lustre_handle conn = { 0 };
7173 struct mdt_device *mdt;
7175 struct lnet_nid *client_nid = localdata;
7179 LASSERT(env != NULL);
7180 LASSERT(data != NULL);
7182 if (!exp || !obd || !cluuid)
7185 mdt = mdt_dev(obd->obd_lu_dev);
7188 * first, check whether the stack is ready to handle requests
7189 * XXX: probably not very appropriate method is used now
7190 * at some point we should find a better one
7192 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) &&
7193 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) &&
7194 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
7195 rc = obd_get_info(env, mdt->mdt_child_exp,
7196 sizeof(KEY_OSP_CONNECTED),
7197 KEY_OSP_CONNECTED, NULL, NULL);
7200 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
7203 rc = class_connect(&conn, obd, cluuid);
7207 lexp = class_conn2export(&conn);
7208 LASSERT(lexp != NULL);
7210 rc = nodemap_add_member(client_nid, lexp);
7211 if (rc != 0 && rc != -EEXIST)
7214 rc = mdt_connect_internal(env, lexp, mdt, data, false);
7216 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
7219 memcpy(lcd->lcd_uuid, cluuid, sizeof(lcd->lcd_uuid));
7220 rc = tgt_client_new(env, lexp);
7222 mdt_export_stats_init(obd, lexp, localdata);
7226 class_disconnect(lexp);
7227 nodemap_del_member(lexp);
7231 /* Because we do not want this export to be evicted by pinger,
7232 * let's not add this export to the timed chain list.
7234 if (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) {
7235 spin_lock(&lexp->exp_obd->obd_dev_lock);
7236 list_del_init(&lexp->exp_obd_chain_timed);
7237 spin_unlock(&lexp->exp_obd->obd_dev_lock);
7244 static int mdt_obd_reconnect(const struct lu_env *env,
7245 struct obd_export *exp, struct obd_device *obd,
7246 struct obd_uuid *cluuid,
7247 struct obd_connect_data *data,
7250 struct lnet_nid *client_nid = localdata;
7255 if (exp == NULL || obd == NULL || cluuid == NULL)
7258 rc = nodemap_add_member(client_nid, exp);
7259 if (rc != 0 && rc != -EEXIST)
7262 rc = mdt_connect_internal(env, exp, mdt_dev(obd->obd_lu_dev), data,
7265 mdt_export_stats_init(obd, exp, localdata);
7267 nodemap_del_member(exp);
7272 /* FIXME: Can we avoid using these two interfaces? */
7273 static int mdt_init_export(struct obd_export *exp)
7275 struct mdt_export_data *med = &exp->exp_mdt_data;
7280 INIT_LIST_HEAD(&med->med_open_head);
7281 spin_lock_init(&med->med_open_lock);
7282 spin_lock(&exp->exp_lock);
7283 exp->exp_connecting = 1;
7284 spin_unlock(&exp->exp_lock);
7286 OBD_ALLOC(exp->exp_used_slots,
7287 BITS_TO_LONGS(OBD_MAX_RIF_MAX) * sizeof(long));
7288 if (exp->exp_used_slots == NULL)
7291 /* self-export doesn't need client data and ldlm initialization */
7292 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
7293 &exp->exp_client_uuid)))
7296 rc = tgt_client_alloc(exp);
7300 rc = ldlm_init_export(exp);
7307 tgt_client_free(exp);
7309 OBD_FREE(exp->exp_used_slots,
7310 BITS_TO_LONGS(OBD_MAX_RIF_MAX) * sizeof(long));
7311 exp->exp_used_slots = NULL;
7313 CERROR("%s: Failed to initialize export: rc = %d\n",
7314 exp->exp_obd->obd_name, rc);
7318 static int mdt_destroy_export(struct obd_export *exp)
7322 target_destroy_export(exp);
7323 if (exp->exp_used_slots)
7324 OBD_FREE(exp->exp_used_slots,
7325 BITS_TO_LONGS(OBD_MAX_RIF_MAX) * sizeof(long));
7327 /* destroy can be called from failed obd_setup, so
7328 * checking uuid is safer than obd_self_export
7330 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
7331 &exp->exp_client_uuid)))
7334 ldlm_destroy_export(exp);
7335 tgt_client_free(exp);
7337 LASSERT(list_empty(&exp->exp_outstanding_replies));
7338 LASSERT(list_empty(&exp->exp_mdt_data.med_open_head));
7341 * discard grants once we're sure no more
7342 * interaction with the client is possible
7344 tgt_grant_discard(exp);
7345 if (exp_connect_flags(exp) & OBD_CONNECT_GRANT)
7346 obd2obt(exp->exp_obd)->obt_lut->lut_tgd.tgd_tot_granted_clients--;
7348 if (!(exp->exp_flags & OBD_OPT_FORCE))
7349 tgt_grant_sanity_check(exp->exp_obd, __func__);
7354 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
7355 struct linkea_data *ldata)
7359 LASSERT(ldata->ld_buf->lb_buf != NULL);
7361 if (!mdt_object_exists(mdt_obj))
7364 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
7365 ldata->ld_buf, XATTR_NAME_LINK);
7366 if (rc == -ERANGE) {
7367 /* Buf was too small, figure out what we need. */
7368 lu_buf_free(ldata->ld_buf);
7369 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
7370 ldata->ld_buf, XATTR_NAME_LINK);
7373 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
7374 if (ldata->ld_buf->lb_buf == NULL)
7376 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
7377 ldata->ld_buf, XATTR_NAME_LINK);
7382 return linkea_init_with_rec(ldata);
7386 * Given an MDT object, try to look up the full path to the object.
7387 * Part of the MDT layer implementation of lfs fid2path.
7389 * \param[in] info Per-thread common data shared by MDT level handlers.
7390 * \param[in] obj Object to do path lookup of
7391 * \param[in,out] fp User-provided struct to store path information
7392 * \param[in] root_fid Root FID of current path should reach
7394 * \retval 0 Lookup successful, path information stored in fp
7395 * \retval -EAGAIN Lookup failed, usually because object is being moved
7396 * \retval negative errno if there was a problem
7398 static int mdt_path_current(struct mdt_thread_info *info,
7399 struct mdt_object *obj,
7400 struct getinfo_fid2path *fp,
7401 struct lu_fid *root_fid)
7403 struct mdt_device *mdt = info->mti_mdt;
7404 struct lu_name *tmpname = &info->mti_name;
7405 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
7406 struct lu_buf *buf = &info->mti_big_buf;
7407 struct linkea_data ldata = { NULL };
7409 struct mdt_object *mdt_obj;
7410 struct link_ea_header *leh;
7411 struct link_ea_entry *lee;
7412 bool worthchecking = true;
7413 bool needsfid = false;
7414 bool supported = false;
7422 /* temp buffer for path element, the buffer will be finally freed
7423 * in mdt_thread_info_fini
7425 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
7426 if (buf->lb_buf == NULL)
7430 ptr = fp->gf_u.gf_path + fp->gf_pathlen - 1;
7433 *tmpfid = fp->gf_fid = *mdt_object_fid(obj);
7435 while (!lu_fid_eq(root_fid, &fp->gf_fid)) {
7436 if (!lu_fid_eq(root_fid, &mdt->mdt_md_root_fid) &&
7437 lu_fid_eq(&mdt->mdt_md_root_fid, &fp->gf_fid))
7438 GOTO(out, rc = -ENOENT);
7440 if (lu_fid_eq(mdt_object_fid(obj), tmpfid)) {
7442 mdt_object_get(info->mti_env, mdt_obj);
7444 mdt_obj = mdt_object_find(info->mti_env, mdt, tmpfid);
7445 if (IS_ERR(mdt_obj))
7446 GOTO(out, rc = PTR_ERR(mdt_obj));
7449 if (!mdt_object_exists(mdt_obj)) {
7450 mdt_object_put(info->mti_env, mdt_obj);
7451 GOTO(out, rc = -ENOENT);
7454 if (mdt_object_remote(mdt_obj)) {
7455 mdt_object_put(info->mti_env, mdt_obj);
7456 GOTO(remote_out, rc = -EREMOTE);
7459 if (worthchecking) {
7460 /* need to know if FID being looked up is encrypted */
7461 struct lu_attr la = { 0 };
7462 struct dt_object *dt = mdt_obj2dt(mdt_obj);
7464 if (dt && dt->do_ops && dt->do_ops->do_attr_get)
7465 dt_attr_get(info->mti_env, dt, &la);
7466 if (la.la_valid & LA_FLAGS &&
7467 la.la_flags & LUSTRE_ENCRYPT_FL) {
7468 if (!supported && mdt_info_req(info) &&
7469 !exp_connect_encrypt_fid2path(
7470 mdt_info_req(info)->rq_export)) {
7471 /* client does not support fid2path
7472 * for encrypted files
7474 mdt_object_put(info->mti_env, mdt_obj);
7475 GOTO(out, rc = -ENODATA);
7483 worthchecking = false;
7490 rc = mdt_links_read(info, mdt_obj, &ldata);
7492 mdt_object_put(info->mti_env, mdt_obj);
7497 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
7498 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
7499 /* If set, use link #linkno for path lookup, otherwise use
7500 * link #0. Only do this for the final path ement.
7502 if (first && fp->gf_linkno < leh->leh_reccount) {
7505 for (count = 0; count < fp->gf_linkno; count++) {
7506 lee = (struct link_ea_entry *)
7507 ((char *)lee + reclen);
7508 linkea_entry_unpack(lee, &reclen, tmpname,
7511 if (fp->gf_linkno < leh->leh_reccount - 1)
7512 /* indicate to user there are more links */
7516 /* Check if it is slave stripes */
7517 rc = mdt_is_dir_stripe(info, mdt_obj);
7518 mdt_object_put(info->mti_env, mdt_obj);
7522 fp->gf_fid = *tmpfid;
7526 /* Pack the name in the end of the buffer */
7527 ptr -= tmpname->ln_namelen;
7528 if (ptr - 1 <= fp->gf_u.gf_path)
7529 GOTO(out, rc = -ENAMETOOLONG);
7530 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
7532 /* Pack FID before file name, so that client can build
7533 * encoded/digested form.
7535 char fidstr[FID_LEN + 1];
7537 snprintf(fidstr, sizeof(fidstr), DFID,
7539 ptr -= strlen(fidstr);
7540 if (ptr - 1 <= fp->gf_u.gf_path)
7541 GOTO(out, rc = -ENAMETOOLONG);
7542 strncpy(ptr, fidstr, strlen(fidstr));
7546 /* keep the last resolved fid to the client, so the client will
7547 * build the left path on another MDT for remote object
7549 fp->gf_fid = *tmpfid;
7554 /* non-zero will be treated as an error */
7559 ptr++; /* skip leading / unless this is an encrypted file */
7560 memmove(fp->gf_u.gf_path, ptr,
7561 fp->gf_u.gf_path + fp->gf_pathlen - ptr);
7568 * Given an MDT object, use mdt_path_current to get the path.
7569 * Essentially a wrapper to retry mdt_path_current a set number of times
7570 * if -EAGAIN is returned (usually because an object is being moved).
7572 * Part of the MDT layer implementation of lfs fid2path.
7574 * \param[in] info Per-thread common data shared by mdt level handlers.
7575 * \param[in] obj Object to do path lookup of
7576 * \param[in,out] fp User-provided struct for arguments and to store path
7579 * \retval 0 Lookup successful, path information stored in fp
7580 * \retval negative errno if there was a problem
7582 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
7583 struct getinfo_fid2path *fp, struct lu_fid *root_fid)
7585 struct mdt_device *mdt = info->mti_mdt;
7591 if (fp->gf_pathlen < 3)
7594 if (root_fid == NULL)
7595 root_fid = &mdt->mdt_md_root_fid;
7597 if (lu_fid_eq(root_fid, mdt_object_fid(obj))) {
7598 fp->gf_u.gf_path[0] = '\0';
7602 /* Retry multiple times in case file is being moved */
7603 while (tries-- && rc == -EAGAIN)
7604 rc = mdt_path_current(info, obj, fp, root_fid);
7610 * Get the full path of the provided FID, as of changelog record recno.
7612 * This checks sanity and looks up object for user provided FID
7613 * before calling the actual path lookup code.
7615 * Part of the MDT layer implementation of lfs fid2path.
7617 * \param[in] info Per-thread common data shared by mdt level handlers.
7618 * \param[in,out] fp User-provided struct for arguments and to store path
7621 * \retval 0 Lookup successful, path information and recno stored in fp
7622 * \retval -ENOENT, object does not exist
7623 * \retval negative errno if there was a problem
7625 static int mdt_fid2path(struct mdt_thread_info *info,
7626 struct lu_fid *root_fid,
7627 struct getinfo_fid2path *fp)
7629 struct mdt_device *mdt = info->mti_mdt;
7630 struct mdt_object *obj;
7635 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
7636 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
7638 if (!fid_is_sane(&fp->gf_fid))
7641 if (!fid_is_namespace_visible(&fp->gf_fid)) {
7642 CDEBUG(D_INFO, "%s: "DFID" is invalid, f_seq should be >= %#llx, or f_oid != 0, or f_ver == 0\n",
7644 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
7648 /* return error if client-provided root fid is not the one stored in
7651 if (root_fid && !fid_is_zero(&info->mti_exp->exp_root_fid) &&
7652 !lu_fid_eq(root_fid, &info->mti_exp->exp_root_fid)) {
7654 "%s: root fid from client "DFID" but "DFID" stored in export\n",
7655 mdt_obd_name(mdt), PFID(root_fid),
7656 PFID(&info->mti_exp->exp_root_fid));
7660 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
7663 CDEBUG(D_IOCTL, "cannot find "DFID": rc = %d\n",
7664 PFID(&fp->gf_fid), rc);
7668 if (mdt_object_remote(obj))
7670 else if (!mdt_object_exists(obj))
7676 mdt_object_put(info->mti_env, obj);
7677 CDEBUG(D_IOCTL, "nonlocal object "DFID": rc = %d\n",
7678 PFID(&fp->gf_fid), rc);
7682 rc = mdt_path(info, obj, fp, root_fid);
7684 CDEBUG(D_INFO, "fid "DFID", path %s recno %#llx linkno %u\n",
7685 PFID(&fp->gf_fid), fp->gf_u.gf_path,
7686 fp->gf_recno, fp->gf_linkno);
7688 mdt_object_put(info->mti_env, obj);
7693 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key, int keylen,
7694 void *val, int vallen)
7696 struct getinfo_fid2path *fpout, *fpin;
7697 struct lu_fid *root_fid = NULL;
7700 fpin = key + round_up(sizeof(KEY_FID2PATH), 8);
7703 if (req_capsule_req_need_swab(info->mti_pill))
7704 lustre_swab_fid2path(fpin);
7706 memcpy(fpout, fpin, sizeof(*fpin));
7707 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
7710 if (keylen >= round_up(sizeof(KEY_FID2PATH), 8) + sizeof(*fpin) +
7711 sizeof(struct lu_fid)) {
7712 /* client sent its root FID, which is normally fileset FID */
7713 root_fid = fpin->gf_u.gf_root_fid;
7714 if (req_capsule_req_need_swab(info->mti_pill))
7715 lustre_swab_lu_fid(root_fid);
7717 if (root_fid != NULL && !fid_is_sane(root_fid))
7721 rc = mdt_fid2path(info, root_fid, fpout);
7725 int mdt_get_info(struct tgt_session_info *tsi)
7735 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
7737 CDEBUG(D_IOCTL, "No GETINFO key\n");
7738 RETURN(err_serious(-EFAULT));
7740 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
7743 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
7744 if (vallen == NULL) {
7745 CDEBUG(D_IOCTL, "%s: cannot get RMF_GETINFO_VALLEN buffer\n",
7746 tgt_name(tsi->tsi_tgt));
7747 RETURN(err_serious(-EFAULT));
7750 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
7752 rc = req_capsule_server_pack(tsi->tsi_pill);
7754 RETURN(err_serious(rc));
7756 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
7757 if (valout == NULL) {
7758 CDEBUG(D_IOCTL, "%s: cannot get get-info RPC out buffer\n",
7759 tgt_name(tsi->tsi_tgt));
7760 RETURN(err_serious(-EFAULT));
7763 if (KEY_IS(KEY_FID2PATH)) {
7764 struct mdt_thread_info *info = tsi2mdt_info(tsi);
7766 rc = mdt_rpc_fid2path(info, key, keylen, valout, *vallen);
7767 mdt_thread_info_fini(info);
7774 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
7776 struct obd_ioctl_data *data = karg;
7779 struct mdt_object *obj;
7780 struct mdt_lock_handle *lh;
7785 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
7786 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
7789 fid = (struct lu_fid *)data->ioc_inlbuf1;
7791 if (!fid_is_sane(fid))
7794 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
7796 lh = &mti->mti_lh[MDT_LH_PARENT];
7797 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE, LCK_CR);
7799 RETURN(PTR_ERR(obj));
7801 if (mdt_object_remote(obj)) {
7804 * before calling version get the correct MDS should be
7805 * fid, this is error to find remote object here
7807 CERROR("nonlocal object "DFID"\n", PFID(fid));
7808 } else if (!mdt_object_exists(obj)) {
7809 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
7812 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
7813 *(__u64 *)data->ioc_inlbuf2 = version;
7816 mdt_object_unlock_put(mti, obj, lh, 1);
7820 /* ioctls on obd dev */
7821 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
7822 void *karg, void __user *uarg)
7824 struct obd_device *obd = exp->exp_obd;
7825 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
7826 struct dt_device *dt = mdt->mdt_bottom;
7827 struct obd_ioctl_data *data;
7832 CDEBUG(D_IOCTL, "%s: cmd=%x len=%u karg=%pK uarg=%pK\n",
7833 obd->obd_name, cmd, len, karg, uarg);
7835 rc = lu_env_init(&env, LCT_MD_THREAD);
7839 /* handle commands that don't use @karg first */
7842 rc = mdt_device_sync(&env, mdt);
7844 case OBD_IOC_SET_READONLY:
7845 rc = dt_sync(&env, dt);
7847 rc = dt_ro(&env, dt);
7851 if (unlikely(karg == NULL)) {
7852 OBD_IOC_ERROR(obd->obd_name, cmd, "karg=NULL", rc = -EINVAL);
7858 case OBD_IOC_ABORT_RECOVERY: {
7859 if (data->ioc_type & OBD_FLG_ABORT_RECOV_MDT) {
7860 LCONSOLE_WARN("%s: Aborting MDT recovery\n",
7862 obd->obd_abort_mdt_recovery = 1;
7863 wake_up(&obd->obd_next_transno_waitq);
7864 } else { /* if (data->ioc_type & OBD_FLG_ABORT_RECOV_OST) */
7865 /* lctl didn't set OBD_FLG_ABORT_RECOV_OST < 2.13.57 */
7866 LCONSOLE_WARN("%s: Aborting client recovery\n",
7868 obd->obd_abort_recovery = 1;
7869 target_stop_recovery_thread(obd);
7874 case OBD_IOC_CHANGELOG_REG:
7875 case OBD_IOC_CHANGELOG_DEREG:
7876 case OBD_IOC_CHANGELOG_CLEAR:
7877 case OBD_IOC_LLOG_PRINT:
7878 case OBD_IOC_LLOG_CANCEL:
7879 rc = mdt->mdt_child->md_ops->mdo_iocontrol(&env, mdt->mdt_child,
7882 case OBD_IOC_START_LFSCK: {
7883 struct md_device *next = mdt->mdt_child;
7884 struct lfsck_start_param lsp;
7886 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
7887 lsp.lsp_index_valid = 0;
7888 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
7891 case OBD_IOC_STOP_LFSCK: {
7892 struct md_device *next = mdt->mdt_child;
7893 struct lfsck_stop stop;
7895 stop.ls_status = LS_STOPPED;
7896 /* Old lfsck utils may pass NULL @stop. */
7897 if (data->ioc_inlbuf1 == NULL)
7901 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
7903 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
7906 case OBD_IOC_QUERY_LFSCK: {
7907 struct md_device *next = mdt->mdt_child;
7909 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0,
7913 case OBD_IOC_GET_OBJ_VERSION: {
7914 struct mdt_thread_info *mti;
7916 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
7917 memset(mti, 0, sizeof(*mti));
7918 mti->mti_env = &env;
7922 rc = mdt_ioc_version_get(mti, karg);
7925 case OBD_IOC_CATLOGLIST: {
7926 struct mdt_thread_info *mti;
7928 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
7929 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
7930 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
7931 &mti->mti_tmp_fid1);
7935 rc = OBD_IOC_ERROR(obd->obd_name, cmd, "unrecognized", -ENOTTY);
7943 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
7945 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
7950 if (!mdt->mdt_skip_lfsck && !mdt->mdt_bottom->dd_rdonly) {
7951 struct lfsck_start_param lsp;
7953 lsp.lsp_start = NULL;
7954 lsp.lsp_index_valid = 0;
7955 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
7956 OBD_IOC_START_LFSCK,
7958 if (rc != 0 && rc != -EALREADY)
7959 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
7960 mdt_obd_name(mdt), rc);
7963 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
7967 static int mdt_obd_postrecov(struct obd_device *obd)
7972 rc = lu_env_init(&env, LCT_MD_THREAD);
7975 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
7980 static const struct obd_ops mdt_obd_device_ops = {
7981 .o_owner = THIS_MODULE,
7982 .o_set_info_async = mdt_obd_set_info_async,
7983 .o_connect = mdt_obd_connect,
7984 .o_reconnect = mdt_obd_reconnect,
7985 .o_disconnect = mdt_obd_disconnect,
7986 .o_init_export = mdt_init_export,
7987 .o_destroy_export = mdt_destroy_export,
7988 .o_iocontrol = mdt_iocontrol,
7989 .o_postrecov = mdt_obd_postrecov,
7990 /* Data-on-MDT IO methods */
7991 .o_preprw = mdt_obd_preprw,
7992 .o_commitrw = mdt_obd_commitrw,
7995 static struct lu_device *mdt_device_fini(const struct lu_env *env,
7996 struct lu_device *d)
7998 struct mdt_device *m = mdt_dev(d);
8006 static struct lu_device *mdt_device_free(const struct lu_env *env,
8007 struct lu_device *d)
8009 struct mdt_device *m = mdt_dev(d);
8013 lu_device_fini(&m->mdt_lu_dev);
8019 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
8020 struct lu_device_type *t,
8021 struct lustre_cfg *cfg)
8023 struct lu_device *l;
8024 struct mdt_device *m;
8031 rc = mdt_init0(env, m, t, cfg);
8033 mdt_device_free(env, l);
8038 l = ERR_PTR(-ENOMEM);
8042 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
8043 LU_KEY_INIT(mdt, struct mdt_thread_info);
8045 static void mdt_key_fini(const struct lu_context *ctx,
8046 struct lu_context_key *key, void *data)
8048 struct mdt_thread_info *info = data;
8050 if (info->mti_big_lmm) {
8051 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
8052 info->mti_big_lmm = NULL;
8053 info->mti_big_lmmsize = 0;
8056 if (info->mti_big_acl) {
8057 OBD_FREE_LARGE(info->mti_big_acl, info->mti_big_aclsize);
8058 info->mti_big_acl = NULL;
8059 info->mti_big_aclsize = 0;
8065 /* context key: mdt_thread_key */
8066 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
8068 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
8070 return lu_ucred(info->mti_env);
8073 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
8075 return lu_ucred_check(info->mti_env);
8079 * Enable/disable COS (Commit On Sharing).
8081 * Set/Clear the COS flag in mdt options.
8083 * \param mdt mdt device
8084 * \param val 0 disables COS, other values enable COS
8086 void mdt_enable_cos(struct mdt_device *mdt, bool val)
8091 mdt->mdt_opts.mo_cos = val;
8092 rc = lu_env_init(&env, LCT_LOCAL);
8093 if (unlikely(rc != 0)) {
8094 CWARN("%s: lu_env initialization failed, cannot sync: rc = %d\n",
8095 mdt_obd_name(mdt), rc);
8098 mdt_device_sync(&env, mdt);
8103 * Check COS (Commit On Sharing) status.
8105 * Return COS flag status.
8107 * \param mdt mdt device
8109 int mdt_cos_is_enabled(struct mdt_device *mdt)
8111 return mdt->mdt_opts.mo_cos != 0;
8114 static const struct lu_device_type_operations mdt_device_type_ops = {
8115 .ldto_device_alloc = mdt_device_alloc,
8116 .ldto_device_free = mdt_device_free,
8117 .ldto_device_fini = mdt_device_fini
8120 static struct lu_device_type mdt_device_type = {
8121 .ldt_tags = LU_DEVICE_MD,
8122 .ldt_name = LUSTRE_MDT_NAME,
8123 .ldt_ops = &mdt_device_type_ops,
8124 .ldt_ctx_tags = LCT_MD_THREAD
8127 static int __init mdt_init(void)
8131 BUILD_BUG_ON(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") !=
8132 FID_NOBRACE_LEN + 1);
8133 BUILD_BUG_ON(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") !=
8136 rc = libcfs_setup();
8140 rc = lu_kmem_init(mdt_caches);
8144 rc = mds_mod_init();
8148 rc = class_register_type(&mdt_obd_device_ops, NULL, true,
8149 LUSTRE_MDT_NAME, &mdt_device_type);
8154 lu_kmem_fini(mdt_caches);
8161 static void __exit mdt_exit(void)
8163 class_unregister_type(LUSTRE_MDT_NAME);
8165 lu_kmem_fini(mdt_caches);
8168 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
8169 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
8170 MODULE_VERSION(LUSTRE_VERSION_STRING);
8171 MODULE_LICENSE("GPL");
8173 module_init(mdt_init);
8174 module_exit(mdt_exit);