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 static unsigned int max_mod_rpcs_per_client = 8;
71 module_param(max_mod_rpcs_per_client, uint, 0644);
72 MODULE_PARM_DESC(max_mod_rpcs_per_client, "maximum number of modify RPCs in flight allowed per client");
74 mdl_mode_t mdt_mdl_lock_modes[] = {
75 [LCK_MINMODE] = MDL_MINMODE,
82 [LCK_GROUP] = MDL_GROUP
85 enum ldlm_mode mdt_dlm_lock_modes[] = {
86 [MDL_MINMODE] = LCK_MINMODE,
93 [MDL_GROUP] = LCK_GROUP
96 static struct mdt_device *mdt_dev(struct lu_device *d);
98 static const struct lu_object_operations mdt_obj_ops;
100 /* Slab for MDT object allocation */
101 static struct kmem_cache *mdt_object_kmem;
103 /* For HSM restore handles */
104 struct kmem_cache *mdt_hsm_cdt_kmem;
106 /* For HSM request handles */
107 struct kmem_cache *mdt_hsm_car_kmem;
109 static struct lu_kmem_descr mdt_caches[] = {
111 .ckd_cache = &mdt_object_kmem,
112 .ckd_name = "mdt_obj",
113 .ckd_size = sizeof(struct mdt_object)
116 .ckd_cache = &mdt_hsm_cdt_kmem,
117 .ckd_name = "mdt_cdt_restore_handle",
118 .ckd_size = sizeof(struct cdt_restore_handle)
121 .ckd_cache = &mdt_hsm_car_kmem,
122 .ckd_name = "mdt_cdt_agent_req",
123 .ckd_size = sizeof(struct cdt_agent_req)
130 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag)
134 return rep->lock_policy_res1 & op_flag;
137 void mdt_clear_disposition(struct mdt_thread_info *info,
138 struct ldlm_reply *rep, __u64 op_flag)
141 info->mti_opdata &= ~op_flag;
142 tgt_opdata_clear(info->mti_env, op_flag);
145 rep->lock_policy_res1 &= ~op_flag;
148 void mdt_set_disposition(struct mdt_thread_info *info,
149 struct ldlm_reply *rep, __u64 op_flag)
152 info->mti_opdata |= op_flag;
153 tgt_opdata_set(info->mti_env, op_flag);
156 rep->lock_policy_res1 |= op_flag;
159 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm)
161 lh->mlh_pdo_hash = 0;
162 lh->mlh_reg_mode = lm;
163 lh->mlh_rreg_mode = lm;
164 lh->mlh_type = MDT_REG_LOCK;
167 void mdt_lh_reg_init(struct mdt_lock_handle *lh, struct ldlm_lock *lock)
169 mdt_lock_reg_init(lh, lock->l_req_mode);
170 if (lock->l_req_mode == LCK_GROUP)
171 lh->mlh_gid = lock->l_policy_data.l_inodebits.li_gid;
174 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
175 const struct lu_name *lname)
177 lh->mlh_reg_mode = lock_mode;
178 lh->mlh_pdo_mode = LCK_MINMODE;
179 lh->mlh_rreg_mode = lock_mode;
180 lh->mlh_type = MDT_PDO_LOCK;
182 if (lu_name_is_valid(lname)) {
183 lh->mlh_pdo_hash = ll_full_name_hash(NULL, lname->ln_name,
185 /* XXX Workaround for LU-2856
187 * Zero is a valid return value of full_name_hash, but
188 * several users of mlh_pdo_hash assume a non-zero
189 * hash value. We therefore map zero onto an
190 * arbitrary, but consistent value (1) to avoid
191 * problems further down the road. */
192 if (unlikely(lh->mlh_pdo_hash == 0))
193 lh->mlh_pdo_hash = 1;
195 lh->mlh_pdo_hash = 0;
199 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
200 struct mdt_lock_handle *lh)
206 * Any dir access needs couple of locks:
208 * 1) on part of dir we gonna take lookup/modify;
210 * 2) on whole dir to protect it from concurrent splitting and/or to
211 * flush client's cache for readdir().
213 * so, for a given mode and object this routine decides what lock mode
214 * to use for lock #2:
216 * 1) if caller's gonna lookup in dir then we need to protect dir from
217 * being splitted only - LCK_CR
219 * 2) if caller's gonna modify dir then we need to protect dir from
220 * being splitted and to flush cache - LCK_CW
222 * 3) if caller's gonna modify dir and that dir seems ready for
223 * splitting then we need to protect it from any type of access
224 * (lookup/modify/split) - LCK_EX --bzzz
227 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
228 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
231 * Ask underlaying level its opinion about preferable PDO lock mode
232 * having access type passed as regular lock mode:
234 * - MDL_MINMODE means that lower layer does not want to specify lock
237 * - MDL_NL means that no PDO lock should be taken. This is used in some
238 * cases. Say, for non-splittable directories no need to use PDO locks
241 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
242 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
244 if (mode != MDL_MINMODE) {
245 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
248 * Lower layer does not want to specify locking mode. We do it
249 * our selves. No special protection is needed, just flush
250 * client's cache on modification and allow concurrent
253 switch (lh->mlh_reg_mode) {
255 lh->mlh_pdo_mode = LCK_EX;
258 lh->mlh_pdo_mode = LCK_CR;
261 lh->mlh_pdo_mode = LCK_CW;
264 CERROR("Not expected lock type (0x%x)\n",
265 (int)lh->mlh_reg_mode);
270 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
275 * Check whether \a o is directory stripe object.
277 * \param[in] info thread environment
278 * \param[in] o MDT object
280 * \retval 1 is directory stripe.
281 * \retval 0 isn't directory stripe.
282 * \retval < 1 error code
284 static int mdt_is_dir_stripe(struct mdt_thread_info *info,
285 struct mdt_object *o)
287 struct md_attr *ma = &info->mti_attr;
288 struct lmv_mds_md_v1 *lmv;
291 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
295 if (!(ma->ma_valid & MA_LMV))
298 lmv = &ma->ma_lmv->lmv_md_v1;
300 if (!lmv_is_sane2(lmv))
303 if (le32_to_cpu(lmv->lmv_magic) == LMV_MAGIC_STRIPE)
309 static int mdt_lookup_fileset(struct mdt_thread_info *info, const char *fileset,
312 struct mdt_device *mdt = info->mti_mdt;
313 struct lu_name *lname = &info->mti_name;
314 const char *start = fileset;
315 char *filename = info->mti_filename;
316 struct mdt_object *parent;
320 LASSERT(!info->mti_cross_ref);
323 * We may want to allow this to mount a completely separate
324 * fileset from the MDT in the future, but keeping it to
325 * ROOT/ only for now avoid potential security issues.
327 *fid = mdt->mdt_md_root_fid;
329 while (rc == 0 && start != NULL && *start != '\0') {
330 const char *s1 = start;
336 while (*s2 != '/' && *s2 != '\0')
344 lname->ln_namelen = s2 - s1;
345 if (lname->ln_namelen > NAME_MAX) {
350 /* reject .. as a path component */
351 if (lname->ln_namelen == 2 &&
352 strncmp(s1, "..", 2) == 0) {
357 strncpy(filename, s1, lname->ln_namelen);
358 filename[lname->ln_namelen] = '\0';
359 lname->ln_name = filename;
361 parent = mdt_object_find(info->mti_env, mdt, fid);
362 if (IS_ERR(parent)) {
363 rc = PTR_ERR(parent);
366 /* Only got the fid of this obj by name */
368 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
369 fid, &info->mti_spec);
370 mdt_object_put(info->mti_env, parent);
373 parent = mdt_object_find(info->mti_env, mdt, fid);
375 rc = PTR_ERR(parent);
377 mode = lu_object_attr(&parent->mot_obj);
378 if (!S_ISDIR(mode)) {
380 } else if (mdt_is_remote_object(info, parent, parent)) {
381 if (!mdt->mdt_enable_remote_subdir_mount) {
383 LCONSOLE_WARN("%s: subdir mount '%s' refused because 'enable_remote_subdir_mount=0': rc = %d\n",
387 LCONSOLE_INFO("%s: subdir mount '%s' is remote and may be slow\n",
392 mdt_object_put(info->mti_env, parent);
399 static int mdt_get_root(struct tgt_session_info *tsi)
401 struct mdt_thread_info *info = tsi2mdt_info(tsi);
402 struct mdt_device *mdt = info->mti_mdt;
403 struct mdt_body *repbody;
404 char *fileset = NULL, *buffer = NULL;
406 struct obd_export *exp = info->mti_exp;
407 char *nodemap_fileset;
411 rc = mdt_check_ucred(info);
413 GOTO(out, rc = err_serious(rc));
415 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GET_ROOT_PACK))
416 GOTO(out, rc = err_serious(-ENOMEM));
418 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
419 if (req_capsule_get_size(info->mti_pill, &RMF_NAME, RCL_CLIENT) > 0) {
420 fileset = req_capsule_client_get(info->mti_pill, &RMF_NAME);
422 GOTO(out, rc = err_serious(-EFAULT));
425 nodemap_fileset = nodemap_get_fileset(exp->exp_target_data.ted_nodemap);
426 if (nodemap_fileset && nodemap_fileset[0]) {
427 CDEBUG(D_INFO, "nodemap fileset is %s\n", nodemap_fileset);
429 /* consider fileset from client as a sub-fileset
430 * of the nodemap one */
431 OBD_ALLOC(buffer, PATH_MAX + 1);
433 GOTO(out, rc = err_serious(-ENOMEM));
434 if (snprintf(buffer, PATH_MAX + 1, "%s/%s",
435 nodemap_fileset, fileset) >= PATH_MAX + 1)
436 GOTO(out, rc = err_serious(-EINVAL));
439 /* enforce fileset as specified in the nodemap */
440 fileset = nodemap_fileset;
445 CDEBUG(D_INFO, "Getting fileset %s\n", fileset);
446 rc = mdt_lookup_fileset(info, fileset, &repbody->mbo_fid1);
448 GOTO(out, rc = err_serious(rc));
450 repbody->mbo_fid1 = mdt->mdt_md_root_fid;
452 repbody->mbo_valid |= OBD_MD_FLID;
456 mdt_thread_info_fini(info);
458 OBD_FREE(buffer, PATH_MAX+1);
462 static int mdt_statfs(struct tgt_session_info *tsi)
464 struct ptlrpc_request *req = tgt_ses_req(tsi);
465 struct mdt_thread_info *info = tsi2mdt_info(tsi);
466 struct mdt_device *mdt = info->mti_mdt;
467 struct tg_grants_data *tgd = &mdt->mdt_lut.lut_tgd;
468 struct md_device *next = mdt->mdt_child;
469 struct ptlrpc_service_part *svcpt;
470 struct obd_statfs *osfs;
471 struct mdt_body *reqbody = NULL;
472 struct mdt_statfs_cache *msf;
473 ktime_t kstart = ktime_get();
474 int current_blockbits;
479 svcpt = req->rq_rqbd->rqbd_svcpt;
481 /* This will trigger a watchdog timeout */
482 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
483 (MDT_SERVICE_WATCHDOG_FACTOR *
484 at_get(&svcpt->scp_at_estimate)) + 1);
486 rc = mdt_check_ucred(info);
488 GOTO(out, rc = err_serious(rc));
490 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
491 GOTO(out, rc = err_serious(-ENOMEM));
493 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
495 GOTO(out, rc = -EPROTO);
497 if (mdt_is_sum_statfs_client(req->rq_export) &&
498 lustre_packed_msg_size(req->rq_reqmsg) ==
499 req_capsule_fmt_size(req->rq_reqmsg->lm_magic,
500 &RQF_MDS_STATFS_NEW, RCL_CLIENT)) {
501 req_capsule_extend(info->mti_pill, &RQF_MDS_STATFS_NEW);
502 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
505 if (reqbody && reqbody->mbo_valid & OBD_MD_FLAGSTATFS)
506 msf = &mdt->mdt_sum_osfs;
508 msf = &mdt->mdt_osfs;
510 if (msf->msf_age + OBD_STATFS_CACHE_SECONDS <= ktime_get_seconds()) {
511 /** statfs data is too old, get up-to-date one */
512 if (reqbody && reqbody->mbo_valid & OBD_MD_FLAGSTATFS)
513 rc = next->md_ops->mdo_statfs(info->mti_env,
516 rc = dt_statfs(info->mti_env, mdt->mdt_bottom,
520 spin_lock(&mdt->mdt_lock);
521 msf->msf_osfs = *osfs;
522 msf->msf_age = ktime_get_seconds();
523 spin_unlock(&mdt->mdt_lock);
525 /** use cached statfs data */
526 spin_lock(&mdt->mdt_lock);
527 *osfs = msf->msf_osfs;
528 spin_unlock(&mdt->mdt_lock);
531 /* tgd_blockbit is recordsize bits set during mkfs.
532 * This once set does not change. However, 'zfs set'
533 * can be used to change the MDT blocksize. Instead
534 * of using cached value of 'tgd_blockbit' always
535 * calculate the blocksize bits which may have
538 current_blockbits = fls64(osfs->os_bsize) - 1;
540 /* at least try to account for cached pages. its still racy and
541 * might be under-reporting if clients haven't announced their
542 * caches with brw recently */
543 CDEBUG(D_SUPER | D_CACHE, "blocks cached %llu granted %llu"
544 " pending %llu free %llu avail %llu\n",
545 tgd->tgd_tot_dirty, tgd->tgd_tot_granted,
546 tgd->tgd_tot_pending,
547 osfs->os_bfree << current_blockbits,
548 osfs->os_bavail << current_blockbits);
550 osfs->os_bavail -= min_t(u64, osfs->os_bavail,
551 ((tgd->tgd_tot_dirty + tgd->tgd_tot_pending +
552 osfs->os_bsize - 1) >> current_blockbits));
554 tgt_grant_sanity_check(mdt->mdt_lu_dev.ld_obd, __func__);
555 CDEBUG(D_CACHE, "%llu blocks: %llu free, %llu avail; "
556 "%llu objects: %llu free; state %x\n",
557 osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
558 osfs->os_files, osfs->os_ffree, osfs->os_state);
560 if (!exp_grant_param_supp(tsi->tsi_exp) &&
561 current_blockbits > COMPAT_BSIZE_SHIFT) {
562 /* clients which don't support OBD_CONNECT_GRANT_PARAM
563 * should not see a block size > page size, otherwise
564 * cl_lost_grant goes mad. Therefore, we emulate a 4KB (=2^12)
565 * block size which is the biggest block size known to work
566 * with all client's page size. */
567 osfs->os_blocks <<= current_blockbits - COMPAT_BSIZE_SHIFT;
568 osfs->os_bfree <<= current_blockbits - COMPAT_BSIZE_SHIFT;
569 osfs->os_bavail <<= current_blockbits - COMPAT_BSIZE_SHIFT;
570 osfs->os_bsize = 1 << COMPAT_BSIZE_SHIFT;
573 mdt_counter_incr(req, LPROC_MDT_STATFS,
574 ktime_us_delta(ktime_get(), kstart));
576 mdt_thread_info_fini(info);
580 __u32 mdt_lmm_dom_entry_check(struct lov_mds_md *lmm, int *is_dom_only)
582 struct lov_comp_md_v1 *comp_v1;
583 struct lov_mds_md *v1;
585 __u32 dom_stripesize = 0;
587 bool has_ost_stripes = false;
594 if (le32_to_cpu(lmm->lmm_magic) != LOV_MAGIC_COMP_V1)
597 comp_v1 = (struct lov_comp_md_v1 *)lmm;
598 off = le32_to_cpu(comp_v1->lcm_entries[0].lcme_offset);
599 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
601 /* Fast check for DoM entry with no mirroring, should be the first */
602 if (le16_to_cpu(comp_v1->lcm_mirror_count) == 0 &&
603 lov_pattern(le32_to_cpu(v1->lmm_pattern)) != LOV_PATTERN_MDT)
606 /* check all entries otherwise */
607 for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
608 struct lov_comp_md_entry_v1 *lcme;
610 lcme = &comp_v1->lcm_entries[i];
611 if (!(le32_to_cpu(lcme->lcme_flags) & LCME_FL_INIT))
614 off = le32_to_cpu(lcme->lcme_offset);
615 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
617 if (lov_pattern(le32_to_cpu(v1->lmm_pattern)) ==
619 dom_stripesize = le32_to_cpu(v1->lmm_stripe_size);
621 has_ost_stripes = true;
623 if (dom_stripesize && has_ost_stripes)
624 RETURN(dom_stripesize);
626 /* DoM-only case exits here */
627 if (is_dom_only && dom_stripesize)
629 RETURN(dom_stripesize);
633 * Pack size attributes into the reply.
635 int mdt_pack_size2body(struct mdt_thread_info *info,
636 const struct lu_fid *fid, struct lustre_handle *lh)
639 struct md_attr *ma = &info->mti_attr;
641 bool dom_lock = false;
645 LASSERT(ma->ma_attr.la_valid & LA_MODE);
647 if (!S_ISREG(ma->ma_attr.la_mode) ||
648 !(ma->ma_valid & MA_LOV && ma->ma_lmm != NULL))
651 dom_stripe = mdt_lmm_dom_stripesize(ma->ma_lmm);
652 /* no DoM stripe, no size in reply */
656 if (lustre_handle_is_used(lh)) {
657 struct ldlm_lock *lock;
659 lock = ldlm_handle2lock(lh);
661 dom_lock = ldlm_has_dom(lock);
666 /* no DoM lock, no size in reply */
670 /* Either DoM lock exists or LMM has only DoM stripe then
671 * return size on body. */
672 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
674 mdt_dom_object_size(info->mti_env, info->mti_mdt, fid, b, dom_lock);
678 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
680 * Pack ACL data into the reply. UIDs/GIDs are mapped and filtered by nodemap.
682 * \param info thread info object
683 * \param repbody reply to pack ACLs into
684 * \param o mdt object of file to examine
685 * \param nodemap nodemap of client to reply to
687 * \retval -errno error getting or parsing ACL from disk
689 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
690 struct mdt_object *o, struct lu_nodemap *nodemap)
692 const struct lu_env *env = info->mti_env;
693 struct md_object *next = mdt_object_child(o);
694 struct lu_buf *buf = &info->mti_buf;
695 struct mdt_device *mdt = info->mti_mdt;
696 struct req_capsule *pill = info->mti_pill;
701 buf->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
702 buf->lb_len = req_capsule_get_size(pill, &RMF_ACL, RCL_SERVER);
703 if (buf->lb_len == 0)
706 LASSERT(!info->mti_big_acl_used);
708 rc = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_ACCESS);
710 if (rc == -ENODATA) {
711 repbody->mbo_aclsize = 0;
712 repbody->mbo_valid |= OBD_MD_FLACL;
714 } else if (rc == -EOPNOTSUPP) {
716 } else if (rc == -ERANGE) {
717 if (exp_connect_large_acl(info->mti_exp) &&
718 !info->mti_big_acl_used) {
719 if (info->mti_big_acl == NULL) {
720 info->mti_big_aclsize =
722 mdt->mdt_max_ea_size,
724 OBD_ALLOC_LARGE(info->mti_big_acl,
725 info->mti_big_aclsize);
726 if (info->mti_big_acl == NULL) {
727 info->mti_big_aclsize = 0;
728 CERROR("%s: unable to grow "
731 PFID(mdt_object_fid(o)));
736 CDEBUG(D_INODE, "%s: grow the "DFID
737 " ACL buffer to size %d\n",
739 PFID(mdt_object_fid(o)),
740 info->mti_big_aclsize);
742 buf->lb_buf = info->mti_big_acl;
743 buf->lb_len = info->mti_big_aclsize;
744 info->mti_big_acl_used = 1;
747 /* FS has ACL bigger that our limits */
748 CDEBUG(D_INODE, "%s: "DFID" ACL can't fit into %d\n",
749 mdt_obd_name(mdt), PFID(mdt_object_fid(o)),
750 info->mti_big_aclsize);
753 CERROR("%s: unable to read "DFID" ACL: rc = %d\n",
754 mdt_obd_name(mdt), PFID(mdt_object_fid(o)), rc);
757 rc = nodemap_map_acl(nodemap, buf->lb_buf,
758 rc, NODEMAP_FS_TO_CLIENT);
759 /* if all ACLs mapped out, rc is still >= 0 */
761 CERROR("%s: nodemap_map_acl unable to parse "DFID
762 " ACL: rc = %d\n", mdt_obd_name(mdt),
763 PFID(mdt_object_fid(o)), rc);
764 repbody->mbo_aclsize = 0;
765 repbody->mbo_valid &= ~OBD_MD_FLACL;
767 repbody->mbo_aclsize = rc;
768 repbody->mbo_valid |= OBD_MD_FLACL;
777 /* XXX Look into layout in MDT layer. */
778 static inline bool mdt_hsm_is_released(struct lov_mds_md *lmm)
780 struct lov_comp_md_v1 *comp_v1;
781 struct lov_mds_md *v1;
784 if (lmm->lmm_magic == LOV_MAGIC_COMP_V1) {
785 comp_v1 = (struct lov_comp_md_v1 *)lmm;
787 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
788 v1 = (struct lov_mds_md *)((char *)comp_v1 +
789 comp_v1->lcm_entries[i].lcme_offset);
790 /* We don't support partial release for now */
791 if (!(v1->lmm_pattern & LOV_PATTERN_F_RELEASED))
796 return (lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) ?
801 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
802 const struct lu_attr *attr, const struct lu_fid *fid)
804 struct mdt_device *mdt = info->mti_mdt;
805 struct obd_export *exp = info->mti_exp;
806 struct md_attr *ma = &info->mti_attr;
807 struct lu_nodemap *nodemap = NULL;
809 LASSERT(ma->ma_valid & MA_INODE);
811 if (attr->la_valid & LA_ATIME) {
812 b->mbo_atime = attr->la_atime;
813 b->mbo_valid |= OBD_MD_FLATIME;
815 if (attr->la_valid & LA_MTIME) {
816 b->mbo_mtime = attr->la_mtime;
817 b->mbo_valid |= OBD_MD_FLMTIME;
819 if (attr->la_valid & LA_CTIME) {
820 b->mbo_ctime = attr->la_ctime;
821 b->mbo_valid |= OBD_MD_FLCTIME;
823 if (attr->la_valid & LA_BTIME) {
824 b->mbo_btime = attr->la_btime;
825 b->mbo_valid |= OBD_MD_FLBTIME;
827 if (attr->la_valid & LA_FLAGS) {
828 b->mbo_flags = attr->la_flags;
829 b->mbo_valid |= OBD_MD_FLFLAGS;
831 if (attr->la_valid & LA_NLINK) {
832 b->mbo_nlink = attr->la_nlink;
833 b->mbo_valid |= OBD_MD_FLNLINK;
835 if (attr->la_valid & (LA_UID|LA_GID|LA_PROJID)) {
836 nodemap = nodemap_get_from_exp(exp);
840 if (attr->la_valid & LA_UID) {
841 b->mbo_uid = nodemap_map_id(nodemap, NODEMAP_UID,
842 NODEMAP_FS_TO_CLIENT,
844 b->mbo_valid |= OBD_MD_FLUID;
846 if (attr->la_valid & LA_GID) {
847 b->mbo_gid = nodemap_map_id(nodemap, NODEMAP_GID,
848 NODEMAP_FS_TO_CLIENT,
850 b->mbo_valid |= OBD_MD_FLGID;
853 if (attr->la_valid & LA_PROJID) {
854 b->mbo_projid = nodemap_map_id(nodemap, NODEMAP_PROJID,
855 NODEMAP_FS_TO_CLIENT,
857 b->mbo_valid |= OBD_MD_FLPROJID;
860 b->mbo_mode = attr->la_mode;
861 if (attr->la_valid & LA_MODE)
862 b->mbo_valid |= OBD_MD_FLMODE;
863 if (attr->la_valid & LA_TYPE)
864 b->mbo_valid |= OBD_MD_FLTYPE;
868 b->mbo_valid |= OBD_MD_FLID;
869 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, valid=%#llx\n",
870 PFID(fid), b->mbo_nlink, b->mbo_mode, b->mbo_valid);
873 if (!(attr->la_valid & LA_TYPE))
876 b->mbo_rdev = attr->la_rdev;
877 b->mbo_size = attr->la_size;
878 b->mbo_blocks = attr->la_blocks;
880 if (!S_ISREG(attr->la_mode)) {
881 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
882 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
883 /* means no objects are allocated on osts. */
884 LASSERT(!(ma->ma_valid & MA_LOV));
885 /* just ignore blocks occupied by extend attributes on MDS */
887 /* if no object is allocated on osts, the size on mds is valid.
889 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
890 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL) {
891 if (mdt_hsm_is_released(ma->ma_lmm)) {
892 /* A released file stores its size on MDS. */
893 /* But return 1 block for released file, unless tools
894 * like tar will consider it fully sparse. (LU-3864)
896 if (unlikely(b->mbo_size == 0))
900 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
901 } else if (info->mti_som_strict &&
902 mdt->mdt_opts.mo_enable_strict_som) {
903 /* use SOM for size*/
904 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
905 } else if (ma->ma_valid & MA_SOM) { /* lsom is valid */
906 b->mbo_valid |= OBD_MD_FLLAZYSIZE | OBD_MD_FLLAZYBLOCKS;
907 b->mbo_size = ma->ma_som.ms_size;
908 b->mbo_blocks = ma->ma_som.ms_blocks;
912 if (fid != NULL && (b->mbo_valid & OBD_MD_FLSIZE ||
913 b->mbo_valid & OBD_MD_FLLAZYSIZE))
914 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
915 PFID(fid), (unsigned long long)b->mbo_size);
918 if (!IS_ERR_OR_NULL(nodemap))
919 nodemap_putref(nodemap);
922 static inline int mdt_body_has_lov(const struct lu_attr *la,
923 const struct mdt_body *body)
925 return (S_ISREG(la->la_mode) && (body->mbo_valid & OBD_MD_FLEASIZE)) ||
926 (S_ISDIR(la->la_mode) && (body->mbo_valid & OBD_MD_FLDIREA));
929 void mdt_client_compatibility(struct mdt_thread_info *info)
931 struct mdt_body *body;
932 struct ptlrpc_request *req = mdt_info_req(info);
933 struct obd_export *exp = req->rq_export;
934 struct md_attr *ma = &info->mti_attr;
935 struct lu_attr *la = &ma->ma_attr;
938 if (exp_connect_layout(exp))
939 /* the client can deal with 16-bit lmm_stripe_count */
942 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
944 if (!mdt_body_has_lov(la, body))
947 /* now we have a reply with a lov for a client not compatible with the
948 * layout lock so we have to clean the layout generation number */
949 if (S_ISREG(la->la_mode))
950 ma->ma_lmm->lmm_layout_gen = 0;
954 static int mdt_attr_get_eabuf_size(struct mdt_thread_info *info,
955 struct mdt_object *o)
957 const struct lu_env *env = info->mti_env;
960 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
969 /* Is it a directory? Let's check for the LMV as well */
970 if (S_ISDIR(lu_object_attr(&mdt_object_child(o)->mo_lu))) {
971 rc2 = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
975 rc2 = mo_xattr_get(env, mdt_object_child(o),
977 XATTR_NAME_DEFAULT_LMV);
979 if ((rc2 < 0 && rc2 != -ENODATA) || (rc2 > rc))
987 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
990 const struct lu_env *env = info->mti_env;
994 LASSERT(info->mti_big_lmm_used == 0);
995 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
999 /* big_lmm may need to be grown */
1000 if (info->mti_big_lmmsize < rc) {
1001 int size = size_roundup_power2(rc);
1003 if (info->mti_big_lmmsize > 0) {
1004 /* free old buffer */
1005 LASSERT(info->mti_big_lmm);
1006 OBD_FREE_LARGE(info->mti_big_lmm,
1007 info->mti_big_lmmsize);
1008 info->mti_big_lmm = NULL;
1009 info->mti_big_lmmsize = 0;
1012 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
1013 if (info->mti_big_lmm == NULL)
1015 info->mti_big_lmmsize = size;
1017 LASSERT(info->mti_big_lmmsize >= rc);
1019 info->mti_buf.lb_buf = info->mti_big_lmm;
1020 info->mti_buf.lb_len = info->mti_big_lmmsize;
1021 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
1026 int __mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
1027 struct md_attr *ma, const char *name)
1029 struct md_object *next = mdt_object_child(o);
1030 struct lu_buf *buf = &info->mti_buf;
1033 if (strcmp(name, XATTR_NAME_LOV) == 0) {
1034 buf->lb_buf = ma->ma_lmm;
1035 buf->lb_len = ma->ma_lmm_size;
1036 LASSERT(!(ma->ma_valid & MA_LOV));
1037 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
1038 buf->lb_buf = ma->ma_lmv;
1039 buf->lb_len = ma->ma_lmv_size;
1040 LASSERT(!(ma->ma_valid & MA_LMV));
1041 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
1042 buf->lb_buf = ma->ma_default_lmv;
1043 buf->lb_len = ma->ma_default_lmv_size;
1044 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
1049 LASSERT(buf->lb_buf);
1051 rc = mo_xattr_get(info->mti_env, next, buf, name);
1055 if (strcmp(name, XATTR_NAME_LOV) == 0) {
1056 if (info->mti_big_lmm_used)
1057 ma->ma_lmm = info->mti_big_lmm;
1059 /* NOT return LOV EA with hole to old client. */
1060 if (unlikely(le32_to_cpu(ma->ma_lmm->lmm_pattern) &
1061 LOV_PATTERN_F_HOLE) &&
1062 !(exp_connect_flags(info->mti_exp) &
1063 OBD_CONNECT_LFSCK)) {
1066 ma->ma_lmm_size = rc;
1067 ma->ma_valid |= MA_LOV;
1069 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
1070 if (info->mti_big_lmm_used)
1071 ma->ma_lmv = info->mti_big_lmm;
1073 ma->ma_lmv_size = rc;
1074 ma->ma_valid |= MA_LMV;
1075 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
1076 ma->ma_default_lmv_size = rc;
1077 ma->ma_valid |= MA_LMV_DEF;
1080 /* Update mdt_max_mdsize so all clients will be aware that */
1081 if (info->mti_mdt->mdt_max_mdsize < rc)
1082 info->mti_mdt->mdt_max_mdsize = rc;
1085 } else if (rc == -ENODATA) {
1088 } else if (rc == -ERANGE) {
1089 /* Default LMV has fixed size, so it must be able to fit
1090 * in the original buffer */
1091 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
1093 rc = mdt_big_xattr_get(info, o, name);
1095 info->mti_big_lmm_used = 1;
1103 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
1104 struct md_attr *ma, const char *name)
1108 if (!info->mti_big_lmm) {
1109 OBD_ALLOC(info->mti_big_lmm, PAGE_SIZE);
1110 if (!info->mti_big_lmm)
1112 info->mti_big_lmmsize = PAGE_SIZE;
1115 if (strcmp(name, XATTR_NAME_LOV) == 0) {
1116 ma->ma_lmm = info->mti_big_lmm;
1117 ma->ma_lmm_size = info->mti_big_lmmsize;
1118 ma->ma_valid &= ~MA_LOV;
1119 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
1120 ma->ma_lmv = info->mti_big_lmm;
1121 ma->ma_lmv_size = info->mti_big_lmmsize;
1122 ma->ma_valid &= ~MA_LMV;
1127 LASSERT(!info->mti_big_lmm_used);
1128 rc = __mdt_stripe_get(info, o, ma, name);
1129 /* since big_lmm is always used here, clear 'used' flag to avoid
1130 * assertion in mdt_big_xattr_get().
1132 info->mti_big_lmm_used = 0;
1137 int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
1138 struct lu_fid *pfid)
1140 struct lu_buf *buf = &info->mti_buf;
1141 struct link_ea_header *leh;
1142 struct link_ea_entry *lee;
1146 buf->lb_buf = info->mti_big_lmm;
1147 buf->lb_len = info->mti_big_lmmsize;
1148 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
1149 buf, XATTR_NAME_LINK);
1150 /* ignore errors, MA_PFID won't be set and it is
1151 * up to the caller to treat this as an error */
1152 if (rc == -ERANGE || buf->lb_len == 0) {
1153 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
1154 buf->lb_buf = info->mti_big_lmm;
1155 buf->lb_len = info->mti_big_lmmsize;
1160 if (rc < sizeof(*leh)) {
1161 CERROR("short LinkEA on "DFID": rc = %d\n",
1162 PFID(mdt_object_fid(o)), rc);
1166 leh = (struct link_ea_header *) buf->lb_buf;
1167 lee = (struct link_ea_entry *)(leh + 1);
1168 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
1169 leh->leh_magic = LINK_EA_MAGIC;
1170 leh->leh_reccount = __swab32(leh->leh_reccount);
1171 leh->leh_len = __swab64(leh->leh_len);
1173 if (leh->leh_magic != LINK_EA_MAGIC)
1175 if (leh->leh_reccount == 0)
1178 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
1179 fid_be_to_cpu(pfid, pfid);
1184 int mdt_attr_get_pfid_name(struct mdt_thread_info *info, struct mdt_object *o,
1185 struct lu_fid *pfid, struct lu_name *lname)
1187 struct lu_buf *buf = &info->mti_buf;
1188 struct link_ea_header *leh;
1189 struct link_ea_entry *lee;
1193 buf->lb_buf = info->mti_xattr_buf;
1194 buf->lb_len = sizeof(info->mti_xattr_buf);
1195 rc = mo_xattr_get(info->mti_env, mdt_object_child(o), buf,
1197 if (rc == -ERANGE) {
1198 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
1199 buf->lb_buf = info->mti_big_lmm;
1200 buf->lb_len = info->mti_big_lmmsize;
1205 if (rc < sizeof(*leh)) {
1206 CERROR("short LinkEA on "DFID": rc = %d\n",
1207 PFID(mdt_object_fid(o)), rc);
1211 leh = (struct link_ea_header *)buf->lb_buf;
1212 lee = (struct link_ea_entry *)(leh + 1);
1213 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
1214 leh->leh_magic = LINK_EA_MAGIC;
1215 leh->leh_reccount = __swab32(leh->leh_reccount);
1216 leh->leh_len = __swab64(leh->leh_len);
1218 if (leh->leh_magic != LINK_EA_MAGIC)
1221 if (leh->leh_reccount == 0)
1224 linkea_entry_unpack(lee, &reclen, lname, pfid);
1229 int mdt_attr_get_complex(struct mdt_thread_info *info,
1230 struct mdt_object *o, struct md_attr *ma)
1232 const struct lu_env *env = info->mti_env;
1233 struct md_object *next = mdt_object_child(o);
1234 struct lu_buf *buf = &info->mti_buf;
1235 int need = ma->ma_need;
1242 if (mdt_object_exists(o) == 0)
1243 GOTO(out, rc = -ENOENT);
1244 mode = lu_object_attr(&next->mo_lu);
1246 if (need & MA_INODE) {
1247 ma->ma_need = MA_INODE;
1248 rc = mo_attr_get(env, next, ma);
1253 (void) mdt_get_som(info, o, ma);
1254 ma->ma_valid |= MA_INODE;
1257 if (need & MA_PFID) {
1258 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
1260 ma->ma_valid |= MA_PFID;
1261 /* ignore this error, parent fid is not mandatory */
1265 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
1266 rc = __mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
1271 if (need & MA_LMV && S_ISDIR(mode)) {
1272 rc = __mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
1277 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
1278 rc = __mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
1284 * In the handle of MA_INODE, we may already get the SOM attr.
1286 if (need & MA_SOM && S_ISREG(mode) && !(ma->ma_valid & MA_SOM)) {
1287 rc = mdt_get_som(info, o, ma);
1292 if (need & MA_HSM && S_ISREG(mode)) {
1293 buf->lb_buf = info->mti_xattr_buf;
1294 buf->lb_len = sizeof(info->mti_xattr_buf);
1295 BUILD_BUG_ON(sizeof(struct hsm_attrs) >
1296 sizeof(info->mti_xattr_buf));
1297 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
1298 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
1300 ma->ma_valid |= MA_HSM;
1301 else if (rc2 < 0 && rc2 != -ENODATA)
1302 GOTO(out, rc = rc2);
1305 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
1306 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
1307 buf->lb_buf = ma->ma_acl;
1308 buf->lb_len = ma->ma_acl_size;
1309 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
1311 ma->ma_acl_size = rc2;
1312 ma->ma_valid |= MA_ACL_DEF;
1313 } else if (rc2 == -ENODATA) {
1315 ma->ma_acl_size = 0;
1317 GOTO(out, rc = rc2);
1322 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = %#llx ma_lmm=%p\n",
1323 rc, ma->ma_valid, ma->ma_lmm);
1327 static void mdt_preset_encctx_size(struct mdt_thread_info *info)
1329 struct req_capsule *pill = info->mti_pill;
1332 if (req_capsule_has_field(pill, &RMF_FILE_ENCCTX,
1334 /* pre-set size in server part with max size */
1335 req_capsule_set_size(pill, &RMF_FILE_ENCCTX,
1337 info->mti_mdt->mdt_max_mdsize);
1341 static int mdt_getattr_internal(struct mdt_thread_info *info,
1342 struct mdt_object *o, int ma_need)
1344 struct mdt_device *mdt = info->mti_mdt;
1345 struct md_object *next = mdt_object_child(o);
1346 const struct mdt_body *reqbody = info->mti_body;
1347 struct ptlrpc_request *req = mdt_info_req(info);
1348 struct md_attr *ma = &info->mti_attr;
1349 struct lu_attr *la = &ma->ma_attr;
1350 struct req_capsule *pill = info->mti_pill;
1351 const struct lu_env *env = info->mti_env;
1352 struct mdt_body *repbody;
1353 struct lu_buf *buffer = &info->mti_buf;
1354 struct obd_export *exp = info->mti_exp;
1355 ktime_t kstart = ktime_get();
1360 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
1361 RETURN(err_serious(-ENOMEM));
1363 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1367 if (mdt_object_remote(o)) {
1368 /* This object is located on remote node.*/
1369 /* Return -ENOTSUPP for old client */
1370 if (!mdt_is_dne_client(req->rq_export))
1371 GOTO(out, rc = -ENOTSUPP);
1373 repbody->mbo_fid1 = *mdt_object_fid(o);
1374 repbody->mbo_valid = OBD_MD_FLID | OBD_MD_MDS;
1378 if (reqbody->mbo_eadatasize > 0) {
1379 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
1380 if (buffer->lb_buf == NULL)
1381 GOTO(out, rc = -EPROTO);
1382 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD,
1385 buffer->lb_buf = NULL;
1387 ma_need &= ~(MA_LOV | MA_LMV);
1388 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
1389 mdt_obd_name(info->mti_mdt),
1390 req->rq_export->exp_client_uuid.uuid);
1393 /* from 2.12.58 intent_getattr pack default LMV in reply */
1394 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1395 ((reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA)) ==
1396 (OBD_MD_MEA | OBD_MD_DEFAULT_MEA)) &&
1397 req_capsule_has_field(&req->rq_pill, &RMF_DEFAULT_MDT_MD,
1399 ma->ma_lmv = buffer->lb_buf;
1400 ma->ma_lmv_size = buffer->lb_len;
1401 ma->ma_default_lmv = req_capsule_server_get(pill,
1402 &RMF_DEFAULT_MDT_MD);
1403 ma->ma_default_lmv_size = req_capsule_get_size(pill,
1404 &RMF_DEFAULT_MDT_MD,
1406 ma->ma_need = MA_INODE;
1407 if (ma->ma_lmv_size > 0)
1408 ma->ma_need |= MA_LMV;
1409 if (ma->ma_default_lmv_size > 0)
1410 ma->ma_need |= MA_LMV_DEF;
1411 } else if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1412 (reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
1413 /* If it is dir and client require MEA, then we got MEA */
1414 /* Assumption: MDT_MD size is enough for lmv size. */
1415 ma->ma_lmv = buffer->lb_buf;
1416 ma->ma_lmv_size = buffer->lb_len;
1417 ma->ma_need = MA_INODE;
1418 if (ma->ma_lmv_size > 0) {
1419 if (reqbody->mbo_valid & OBD_MD_MEA) {
1420 ma->ma_need |= MA_LMV;
1421 } else if (reqbody->mbo_valid & OBD_MD_DEFAULT_MEA) {
1422 ma->ma_need |= MA_LMV_DEF;
1423 ma->ma_default_lmv = buffer->lb_buf;
1425 ma->ma_default_lmv_size = buffer->lb_len;
1426 ma->ma_lmv_size = 0;
1430 ma->ma_lmm = buffer->lb_buf;
1431 ma->ma_lmm_size = buffer->lb_len;
1432 ma->ma_need = MA_INODE | MA_HSM;
1433 if (ma->ma_lmm_size > 0) {
1434 ma->ma_need |= MA_LOV;
1435 /* Older clients may crash if they getattr overstriped
1438 if (!exp_connect_overstriping(exp) &&
1439 mdt_lmm_is_overstriping(ma->ma_lmm))
1440 RETURN(-EOPNOTSUPP);
1444 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1445 reqbody->mbo_valid & OBD_MD_FLDIREA &&
1446 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
1447 /* get default stripe info for this dir. */
1448 ma->ma_need |= MA_LOV_DEF;
1450 ma->ma_need |= ma_need;
1452 rc = mdt_attr_get_complex(info, o, ma);
1454 CDEBUG_LIMIT(rc == -ENOENT ? D_OTHER : D_ERROR,
1455 "%s: getattr error for "DFID": rc = %d\n",
1456 mdt_obd_name(info->mti_mdt),
1457 PFID(mdt_object_fid(o)), rc);
1461 /* if file is released, check if a restore is running */
1462 if (ma->ma_valid & MA_HSM) {
1463 repbody->mbo_valid |= OBD_MD_TSTATE;
1464 if ((ma->ma_hsm.mh_flags & HS_RELEASED) &&
1465 mdt_hsm_restore_is_running(info, mdt_object_fid(o)))
1466 repbody->mbo_t_state = MS_RESTORE;
1469 if (unlikely(!(ma->ma_valid & MA_INODE)))
1472 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
1474 if (mdt_body_has_lov(la, reqbody)) {
1475 u32 stripe_count = 1;
1476 bool fixed_layout = false;
1478 if (ma->ma_valid & MA_LOV) {
1479 LASSERT(ma->ma_lmm_size);
1480 repbody->mbo_eadatasize = ma->ma_lmm_size;
1481 if (S_ISDIR(la->la_mode))
1482 repbody->mbo_valid |= OBD_MD_FLDIREA;
1484 repbody->mbo_valid |= OBD_MD_FLEASIZE;
1485 mdt_dump_lmm(D_INFO, ma->ma_lmm, repbody->mbo_valid);
1487 if (ma->ma_valid & MA_LMV) {
1488 struct lmv_mds_md_v1 *lmv = &ma->ma_lmv->lmv_md_v1;
1489 u32 magic = le32_to_cpu(lmv->lmv_magic);
1491 /* Return -ENOTSUPP for old client */
1492 if (!mdt_is_striped_client(req->rq_export))
1495 LASSERT(S_ISDIR(la->la_mode));
1496 mdt_dump_lmv(D_INFO, ma->ma_lmv);
1497 repbody->mbo_eadatasize = ma->ma_lmv_size;
1498 repbody->mbo_valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
1500 stripe_count = le32_to_cpu(lmv->lmv_stripe_count);
1501 fixed_layout = lmv_is_fixed(lmv);
1502 if (magic == LMV_MAGIC_STRIPE && lmv_is_restriping(lmv))
1503 mdt_restripe_migrate_add(info, o);
1504 else if (magic == LMV_MAGIC_V1 &&
1505 lmv_is_restriping(lmv))
1506 mdt_restripe_update_add(info, o);
1508 if (ma->ma_valid & MA_LMV_DEF) {
1509 /* Return -ENOTSUPP for old client */
1510 if (!mdt_is_striped_client(req->rq_export))
1512 LASSERT(S_ISDIR(la->la_mode));
1514 * when ll_dir_getstripe() gets default LMV, it
1515 * checks mbo_eadatasize.
1517 if (!(ma->ma_valid & MA_LMV))
1518 repbody->mbo_eadatasize =
1519 ma->ma_default_lmv_size;
1520 repbody->mbo_valid |= (OBD_MD_FLDIREA |
1521 OBD_MD_DEFAULT_MEA);
1524 "dirent count %llu stripe count %u MDT count %d\n",
1525 ma->ma_attr.la_dirent_count, stripe_count,
1526 atomic_read(&mdt->mdt_mds_mds_conns) + 1);
1527 if (ma->ma_attr.la_dirent_count != LU_DIRENT_COUNT_UNSET &&
1528 ma->ma_attr.la_dirent_count >
1529 mdt->mdt_restriper.mdr_dir_split_count &&
1530 !fid_is_root(mdt_object_fid(o)) &&
1531 mdt->mdt_enable_dir_auto_split &&
1532 !o->mot_restriping &&
1533 stripe_count < atomic_read(&mdt->mdt_mds_mds_conns) + 1 &&
1535 mdt_auto_split_add(info, o);
1536 } else if (S_ISLNK(la->la_mode) &&
1537 reqbody->mbo_valid & OBD_MD_LINKNAME) {
1538 buffer->lb_buf = ma->ma_lmm;
1539 /* eadatasize from client includes NULL-terminator, so
1540 * there is no need to read it */
1541 buffer->lb_len = reqbody->mbo_eadatasize - 1;
1542 rc = mo_readlink(env, next, buffer);
1543 if (unlikely(rc <= 0)) {
1544 CERROR("%s: readlink failed for "DFID": rc = %d\n",
1545 mdt_obd_name(info->mti_mdt),
1546 PFID(mdt_object_fid(o)), rc);
1549 int print_limit = min_t(int, PAGE_SIZE - 128, rc);
1551 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
1553 repbody->mbo_valid |= OBD_MD_LINKNAME;
1554 /* we need to report back size with NULL-terminator
1555 * because client expects that */
1556 repbody->mbo_eadatasize = rc + 1;
1557 if (repbody->mbo_eadatasize != reqbody->mbo_eadatasize)
1558 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
1559 "on "DFID ", expected %d\n",
1560 mdt_obd_name(info->mti_mdt),
1561 rc, PFID(mdt_object_fid(o)),
1562 reqbody->mbo_eadatasize - 1);
1563 /* NULL terminate */
1564 ((char *)ma->ma_lmm)[rc] = 0;
1566 /* If the total CDEBUG() size is larger than a page, it
1567 * will print a warning to the console, avoid this by
1568 * printing just the last part of the symlink. */
1569 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
1570 print_limit < rc ? "..." : "", print_limit,
1571 (char *)ma->ma_lmm + rc - print_limit, rc);
1576 if (reqbody->mbo_valid & OBD_MD_FLMODEASIZE) {
1577 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
1578 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
1579 CDEBUG(D_INODE, "changing the max MD size to %u\n",
1580 repbody->mbo_max_mdsize);
1583 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
1584 if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
1585 (reqbody->mbo_valid & OBD_MD_FLACL)) {
1586 struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
1587 if (IS_ERR(nodemap))
1588 RETURN(PTR_ERR(nodemap));
1590 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
1591 nodemap_putref(nodemap);
1597 mdt_counter_incr(req, LPROC_MDT_GETATTR,
1598 ktime_us_delta(ktime_get(), kstart));
1603 static int mdt_getattr(struct tgt_session_info *tsi)
1605 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1606 struct mdt_object *obj = info->mti_object;
1607 struct req_capsule *pill = info->mti_pill;
1608 struct mdt_body *reqbody;
1609 struct mdt_body *repbody;
1613 if (unlikely(info->mti_object == NULL))
1616 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1618 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1620 /* Special case for Data-on-MDT files to get data version */
1621 if (unlikely(reqbody->mbo_valid & OBD_MD_FLDATAVERSION)) {
1622 rc = mdt_data_version_get(tsi);
1626 /* Unlike intent case where we need to pre-fill out buffers early on
1627 * in intent policy for ldlm reasons, here we can have a much better
1628 * guess at EA size by just reading it from disk.
1629 * Exceptions are readdir and (missing) directory striping */
1631 if (reqbody->mbo_valid & OBD_MD_LINKNAME) {
1632 /* No easy way to know how long is the symlink, but it cannot
1633 * be more than PATH_MAX, so we allocate +1 */
1635 /* A special case for fs ROOT: getattr there might fetch
1636 * default EA for entire fs, not just for this dir!
1638 } else if (lu_fid_eq(mdt_object_fid(obj),
1639 &info->mti_mdt->mdt_md_root_fid) &&
1640 (reqbody->mbo_valid & OBD_MD_FLDIREA) &&
1641 (lustre_msg_get_opc(mdt_info_req(info)->rq_reqmsg) ==
1643 /* Should the default strping be bigger, mdt_fix_reply
1644 * will reallocate */
1645 rc = DEF_REP_MD_SIZE;
1647 /* Read the actual EA size from disk */
1648 rc = mdt_attr_get_eabuf_size(info, obj);
1652 GOTO(out, rc = err_serious(rc));
1654 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, rc);
1656 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
1657 * by default. If the target object has more ACL entries, then
1658 * enlarge the buffer when necessary. */
1659 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
1660 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
1661 mdt_preset_encctx_size(info);
1663 rc = req_capsule_server_pack(pill);
1664 if (unlikely(rc != 0))
1665 GOTO(out, rc = err_serious(rc));
1667 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1668 LASSERT(repbody != NULL);
1669 repbody->mbo_eadatasize = 0;
1670 repbody->mbo_aclsize = 0;
1672 rc = mdt_check_ucred(info);
1674 GOTO(out_shrink, rc);
1676 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1678 rc = mdt_getattr_internal(info, obj, 0);
1680 GOTO(out_shrink, rc);
1682 rc = mdt_pack_encctx_in_reply(info, obj);
1685 mdt_client_compatibility(info);
1686 rc2 = mdt_fix_reply(info);
1690 mdt_thread_info_fini(info);
1695 * Handler of layout intent RPC requiring the layout modification
1697 * \param[in] info thread environment
1698 * \param[in] obj object
1699 * \param[out] lhc object ldlm lock handle
1700 * \param[in] layout layout change descriptor
1702 * \retval 0 on success
1703 * \retval < 0 error code
1705 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
1706 struct mdt_lock_handle *lhc,
1707 struct md_layout_change *layout)
1713 if (!mdt_object_exists(obj))
1716 if (!S_ISREG(lu_object_attr(&obj->mot_obj)))
1719 rc = mo_permission(info->mti_env, NULL, mdt_object_child(obj), NULL,
1724 rc = mdt_check_resent_lock(info, obj, lhc);
1730 __u64 lockpart = MDS_INODELOCK_LAYOUT;
1732 /* take layout lock to prepare layout change */
1733 if (layout->mlc_opc == MD_LAYOUT_WRITE)
1734 lockpart |= MDS_INODELOCK_UPDATE;
1736 mdt_lock_handle_init(lhc);
1737 mdt_lock_reg_init(lhc, LCK_EX);
1738 rc = mdt_reint_object_lock(info, obj, lhc, lockpart, false);
1743 mutex_lock(&obj->mot_som_mutex);
1744 rc = mo_layout_change(info->mti_env, mdt_object_child(obj), layout);
1745 mutex_unlock(&obj->mot_som_mutex);
1748 mdt_object_unlock(info, obj, lhc, 1);
1754 * Exchange MOF_LOV_CREATED flags between two objects after a
1755 * layout swap. No assumption is made on whether o1 or o2 have
1756 * created objects or not.
1758 * \param[in,out] o1 First swap layout object
1759 * \param[in,out] o2 Second swap layout object
1761 static void mdt_swap_lov_flag(struct mdt_object *o1, struct mdt_object *o2)
1763 unsigned int o1_lov_created = o1->mot_lov_created;
1765 mutex_lock(&o1->mot_lov_mutex);
1766 mutex_lock(&o2->mot_lov_mutex);
1768 o1->mot_lov_created = o2->mot_lov_created;
1769 o2->mot_lov_created = o1_lov_created;
1771 mutex_unlock(&o2->mot_lov_mutex);
1772 mutex_unlock(&o1->mot_lov_mutex);
1775 static int mdt_swap_layouts(struct tgt_session_info *tsi)
1777 struct mdt_thread_info *info;
1778 struct ptlrpc_request *req = tgt_ses_req(tsi);
1779 struct obd_export *exp = req->rq_export;
1780 struct mdt_object *o1, *o2, *o;
1781 struct mdt_lock_handle *lh1, *lh2;
1782 struct mdc_swap_layouts *msl;
1786 /* client does not support layout lock, so layout swaping
1788 * FIXME: there is a problem for old clients which don't support
1789 * layout lock yet. If those clients have already opened the file
1790 * they won't be notified at all so that old layout may still be
1791 * used to do IO. This can be fixed after file release is landed by
1792 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1793 if (!exp_connect_layout(exp))
1794 RETURN(-EOPNOTSUPP);
1796 info = tsi2mdt_info(tsi);
1797 if (unlikely(info->mti_object == NULL))
1800 if (info->mti_dlm_req != NULL)
1801 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
1803 o1 = info->mti_object;
1804 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1805 &info->mti_body->mbo_fid2);
1807 GOTO(out, rc = PTR_ERR(o));
1809 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1810 GOTO(put, rc = -ENOENT);
1812 rc = lu_fid_cmp(&info->mti_body->mbo_fid1, &info->mti_body->mbo_fid2);
1813 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1819 /* permission check. Make sure the calling process having permission
1820 * to write both files. */
1821 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1826 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1831 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1833 GOTO(put, rc = -EPROTO);
1835 lh1 = &info->mti_lh[MDT_LH_NEW];
1836 mdt_lock_reg_init(lh1, LCK_EX);
1837 lh2 = &info->mti_lh[MDT_LH_OLD];
1838 mdt_lock_reg_init(lh2, LCK_EX);
1840 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1841 MDS_INODELOCK_XATTR);
1845 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1846 MDS_INODELOCK_XATTR);
1850 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1851 mdt_object_child(o2), msl->msl_flags);
1855 mdt_swap_lov_flag(o1, o2);
1858 mdt_object_unlock(info, o2, lh2, rc);
1860 mdt_object_unlock(info, o1, lh1, rc);
1862 mdt_object_put(info->mti_env, o);
1864 mdt_thread_info_fini(info);
1868 static int mdt_raw_lookup(struct mdt_thread_info *info,
1869 struct mdt_object *parent,
1870 const struct lu_name *lname)
1872 struct lu_fid *fid = &info->mti_tmp_fid1;
1873 struct mdt_body *repbody;
1874 bool is_dotdot = false;
1875 bool is_old_parent_stripe = false;
1876 bool is_new_parent_checked = false;
1881 LASSERT(!info->mti_cross_ref);
1882 /* Always allow to lookup ".." */
1883 if (lname->ln_namelen == 2 &&
1884 lname->ln_name[0] == '.' && lname->ln_name[1] == '.') {
1885 info->mti_spec.sp_permitted = 1;
1887 if (mdt_is_dir_stripe(info, parent) == 1)
1888 is_old_parent_stripe = true;
1891 mdt_object_get(info->mti_env, parent);
1893 /* Only got the fid of this obj by name */
1895 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname, fid,
1897 mdt_object_put(info->mti_env, parent);
1901 /* getattr_name("..") should return master object FID for striped dir */
1902 if (is_dotdot && (is_old_parent_stripe || !is_new_parent_checked)) {
1903 parent = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1905 RETURN(PTR_ERR(parent));
1907 /* old client getattr_name("..") with stripe FID */
1908 if (unlikely(is_old_parent_stripe)) {
1909 is_old_parent_stripe = false;
1913 /* ".." may be a stripe */
1914 if (unlikely(mdt_is_dir_stripe(info, parent) == 1)) {
1915 is_new_parent_checked = true;
1919 mdt_object_put(info->mti_env, parent);
1922 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1923 repbody->mbo_fid1 = *fid;
1924 repbody->mbo_valid = OBD_MD_FLID;
1930 * Find name matching hash
1932 * We search \a child LinkEA for a name whose hash matches \a lname
1933 * (it contains an encoded hash).
1935 * \param info mdt thread info
1936 * \param lname encoded hash to find
1937 * \param parent parent object
1938 * \param child object to search with LinkEA
1940 * \retval 1 match found
1941 * \retval 0 no match found
1942 * \retval -ev negative errno upon error
1944 int find_name_matching_hash(struct mdt_thread_info *info, struct lu_name *lname,
1945 struct mdt_object *parent, struct mdt_object *child)
1947 /* Here, lname is an encoded hash of on-disk name, and
1948 * client is doing access without encryption key.
1949 * So we need to get LinkEA, check parent fid is correct and
1950 * compare name hash with the one in the request.
1952 struct lu_buf *buf = &info->mti_big_buf;
1953 struct lu_name name;
1955 struct linkea_data ldata = { NULL };
1956 struct link_ea_header *leh;
1957 struct link_ea_entry *lee;
1958 struct lu_buf link = { 0 };
1960 int reclen, count, rc;
1963 if (lname->ln_namelen < LL_CRYPTO_BLOCK_SIZE)
1966 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
1971 rc = mdt_links_read(info, child, &ldata);
1975 hash = kmalloc(lname->ln_namelen, GFP_NOFS);
1978 rc = critical_decode(lname->ln_name, lname->ln_namelen, hash);
1981 lee = (struct link_ea_entry *)(leh + 1);
1982 for (count = 0; count < leh->leh_reccount; count++) {
1983 linkea_entry_unpack(lee, &reclen, &name, &pfid);
1984 if (!parent || lu_fid_eq(&pfid, mdt_object_fid(parent))) {
1985 lu_buf_check_and_alloc(&link, name.ln_namelen);
1987 GOTO(out_match, rc = -ENOMEM);
1988 rc = critical_decode(name.ln_name, name.ln_namelen,
1991 if (memcmp(LLCRYPT_EXTRACT_DIGEST(link.lb_buf, rc),
1992 hash, LL_CRYPTO_BLOCK_SIZE) == 0) {
1997 lee = (struct link_ea_entry *) ((char *)lee + reclen);
1999 if (count == leh->leh_reccount)
2012 * UPDATE lock should be taken against parent, and be released before exit;
2013 * child_bits lock should be taken against child, and be returned back:
2014 * (1)normal request should release the child lock;
2015 * (2)intent request will grant the lock to client.
2017 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
2018 struct mdt_lock_handle *lhc,
2020 struct ldlm_reply *ldlm_rep)
2022 struct ptlrpc_request *req = mdt_info_req(info);
2023 struct mdt_body *reqbody = NULL;
2024 struct mdt_object *parent = info->mti_object;
2025 struct mdt_object *child = NULL;
2026 struct lu_fid *child_fid = &info->mti_tmp_fid1;
2027 struct lu_name *lname = NULL;
2028 struct mdt_lock_handle *lhp = NULL;
2029 struct ldlm_lock *lock;
2030 struct req_capsule *pill = info->mti_pill;
2038 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
2039 LASSERT(ergo(is_resent,
2040 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
2045 if (info->mti_cross_ref) {
2046 /* Only getattr on the child. Parent is on another node. */
2047 mdt_set_disposition(info, ldlm_rep,
2048 DISP_LOOKUP_EXECD | DISP_LOOKUP_POS);
2050 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
2052 PFID(mdt_object_fid(child)), ldlm_rep);
2054 rc = mdt_check_resent_lock(info, child, lhc);
2057 } else if (rc > 0) {
2058 mdt_lock_handle_init(lhc);
2059 mdt_lock_reg_init(lhc, LCK_PR);
2062 * Object's name entry is on another MDS, it will
2063 * request PERM lock only because LOOKUP lock is owned
2064 * by the MDS where name entry resides.
2066 * TODO: it should try layout lock too. - Jinshan
2068 child_bits &= ~(MDS_INODELOCK_LOOKUP |
2069 MDS_INODELOCK_LAYOUT);
2070 child_bits |= MDS_INODELOCK_PERM;
2072 rc = mdt_object_lock(info, child, lhc, child_bits);
2077 /* Finally, we can get attr for child. */
2078 if (!mdt_object_exists(child)) {
2079 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
2081 "remote object doesn't exist.");
2082 mdt_object_unlock(info, child, lhc, 1);
2086 rc = mdt_getattr_internal(info, child, 0);
2087 if (unlikely(rc != 0)) {
2088 mdt_object_unlock(info, child, lhc, 1);
2092 rc = mdt_pack_secctx_in_reply(info, child);
2094 mdt_object_unlock(info, child, lhc, 1);
2098 rc = mdt_pack_encctx_in_reply(info, child);
2100 mdt_object_unlock(info, child, lhc, 1);
2104 lname = &info->mti_name;
2105 mdt_name_unpack(pill, &RMF_NAME, lname, MNF_FIX_ANON);
2107 if (info->mti_body->mbo_valid & OBD_MD_NAMEHASH) {
2108 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
2109 if (unlikely(reqbody == NULL))
2110 RETURN(err_serious(-EPROTO));
2112 *child_fid = reqbody->mbo_fid2;
2113 if (unlikely(!fid_is_sane(child_fid)))
2114 RETURN(err_serious(-EINVAL));
2116 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
2117 mdt_object_get(info->mti_env, parent);
2120 child = mdt_object_find(info->mti_env, info->mti_mdt,
2123 RETURN(PTR_ERR(child));
2126 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
2128 PFID(mdt_object_fid(parent)),
2129 PFID(&reqbody->mbo_fid2), ldlm_rep);
2130 } else if (lu_name_is_valid(lname)) {
2131 if (mdt_object_remote(parent)) {
2132 CERROR("%s: parent "DFID" is on remote target\n",
2133 mdt_obd_name(info->mti_mdt),
2134 PFID(mdt_object_fid(parent)));
2138 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", "
2139 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
2140 PNAME(lname), ldlm_rep);
2142 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
2143 if (unlikely(reqbody == NULL))
2144 RETURN(err_serious(-EPROTO));
2146 *child_fid = reqbody->mbo_fid2;
2147 if (unlikely(!fid_is_sane(child_fid)))
2148 RETURN(err_serious(-EINVAL));
2150 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
2151 mdt_object_get(info->mti_env, parent);
2154 child = mdt_object_find(info->mti_env, info->mti_mdt,
2157 RETURN(PTR_ERR(child));
2160 if (mdt_object_remote(child)) {
2161 CERROR("%s: child "DFID" is on remote target\n",
2162 mdt_obd_name(info->mti_mdt),
2163 PFID(mdt_object_fid(child)));
2164 GOTO(out_child, rc = -EPROTO);
2167 /* don't fetch LOOKUP lock if it's remote object */
2168 rc = mdt_is_remote_object(info, parent, child);
2170 GOTO(out_child, rc);
2172 child_bits &= ~MDS_INODELOCK_LOOKUP;
2174 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
2176 PFID(mdt_object_fid(parent)),
2177 PFID(&reqbody->mbo_fid2), ldlm_rep);
2180 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
2182 if (unlikely(!mdt_object_exists(parent)) &&
2183 !(info->mti_body->mbo_valid & OBD_MD_NAMEHASH) &&
2184 lu_name_is_valid(lname)) {
2185 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
2187 "Parent doesn't exist!");
2188 GOTO(out_child, rc = -ESTALE);
2191 if (!child && is_resent) {
2192 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
2194 /* Lock is pinned by ldlm_handle_enqueue0() as it is
2195 * a resend case, however, it could be already destroyed
2196 * due to client eviction or a raced cancel RPC.
2198 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx",
2199 lhc->mlh_reg_lh.cookie);
2202 fid_extract_from_res_name(child_fid,
2203 &lock->l_resource->lr_name);
2204 LDLM_LOCK_PUT(lock);
2205 child = mdt_object_find(info->mti_env, info->mti_mdt,
2208 RETURN(PTR_ERR(child));
2209 } else if (!(info->mti_body->mbo_valid & OBD_MD_NAMEHASH) &&
2210 lu_name_is_valid(lname)) {
2211 if (info->mti_body->mbo_valid == OBD_MD_FLID) {
2212 rc = mdt_raw_lookup(info, parent, lname);
2217 /* step 1: lock parent only if parent is a directory */
2218 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
2219 lhp = &info->mti_lh[MDT_LH_PARENT];
2220 mdt_lock_pdo_init(lhp, LCK_PR, lname);
2221 rc = mdt_object_lock(info, parent, lhp,
2222 MDS_INODELOCK_UPDATE);
2223 if (unlikely(rc != 0))
2227 /* step 2: lookup child's fid by name */
2228 fid_zero(child_fid);
2229 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
2230 child_fid, &info->mti_spec);
2232 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
2235 GOTO(unlock_parent, rc);
2237 child = mdt_object_find(info->mti_env, info->mti_mdt,
2239 if (unlikely(IS_ERR(child)))
2240 GOTO(unlock_parent, rc = PTR_ERR(child));
2243 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
2245 /* step 3: lock child regardless if it is local or remote. */
2248 if (info->mti_body->mbo_valid & OBD_MD_NAMEHASH) {
2249 /* Here, lname is an encoded hash of on-disk name, and
2250 * client is doing access without encryption key.
2251 * So we need to compare name hash with the one in the request.
2253 if (!find_name_matching_hash(info, lname, parent,
2255 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
2256 mdt_clear_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
2257 GOTO(out_child, rc = -ENOENT);
2261 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout * 2);
2262 if (!mdt_object_exists(child)) {
2263 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
2265 "Object doesn't exist!");
2266 GOTO(out_child, rc = -ENOENT);
2269 rc = mdt_check_resent_lock(info, child, lhc);
2271 GOTO(out_child, rc);
2272 } else if (rc > 0) {
2273 mdt_lock_handle_init(lhc);
2274 mdt_lock_reg_init(lhc, LCK_PR);
2276 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
2277 !mdt_object_remote(child)) {
2278 struct md_attr *ma = &info->mti_attr;
2281 ma->ma_need = MA_INODE;
2282 rc = mdt_attr_get_complex(info, child, ma);
2283 if (unlikely(rc != 0))
2284 GOTO(out_child, rc);
2286 /* If the file has not been changed for some time, we
2287 * return not only a LOOKUP lock, but also an UPDATE
2288 * lock and this might save us RPC on later STAT. For
2289 * directories, it also let negative dentry cache start
2290 * working for this dir. */
2291 if (ma->ma_valid & MA_INODE &&
2292 ma->ma_attr.la_valid & LA_CTIME &&
2293 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
2294 ma->ma_attr.la_ctime < ktime_get_real_seconds())
2295 child_bits |= MDS_INODELOCK_UPDATE;
2298 /* layout lock must be granted in a best-effort way
2299 * for IT operations */
2300 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
2301 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
2302 !mdt_object_remote(child) && ldlm_rep != NULL) {
2303 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
2304 exp_connect_layout(info->mti_exp)) {
2305 /* try to grant layout lock for regular file. */
2306 try_bits = MDS_INODELOCK_LAYOUT;
2308 /* Acquire DOM lock in advance for data-on-mdt file */
2309 if (child != parent)
2310 try_bits |= MDS_INODELOCK_DOM;
2313 if (try_bits != 0) {
2314 /* try layout lock, it may fail to be granted due to
2315 * contention at LOOKUP or UPDATE */
2316 rc = mdt_object_lock_try(info, child, lhc, &child_bits,
2318 if (child_bits & MDS_INODELOCK_LAYOUT)
2321 /* Do not enqueue the UPDATE lock from MDT(cross-MDT),
2322 * client will enqueue the lock to the remote MDT */
2323 if (mdt_object_remote(child))
2324 child_bits &= ~MDS_INODELOCK_UPDATE;
2325 rc = mdt_object_lock(info, child, lhc, child_bits);
2327 if (unlikely(rc != 0))
2328 GOTO(out_child, rc);
2331 /* finally, we can get attr for child. */
2332 rc = mdt_getattr_internal(info, child, ma_need);
2333 if (unlikely(rc != 0)) {
2335 mdt_object_unlock(info, child, lhc, 1);
2336 GOTO(out_child, rc);
2339 rc = mdt_pack_secctx_in_reply(info, child);
2342 mdt_object_unlock(info, child, lhc, 1);
2343 GOTO(out_child, rc);
2346 rc = mdt_pack_encctx_in_reply(info, child);
2349 mdt_object_unlock(info, child, lhc, 1);
2350 GOTO(out_child, rc);
2353 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
2355 /* Debugging code. */
2356 LDLM_DEBUG(lock, "Returning lock to client");
2357 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
2358 &lock->l_resource->lr_name),
2359 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
2360 PLDLMRES(lock->l_resource),
2361 PFID(mdt_object_fid(child)));
2363 if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_PTLRPC_ENQ_RESEND))) {
2364 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
2365 OBD_FAIL_TIMEOUT(OBD_FAIL_PTLRPC_ENQ_RESEND,
2367 req->rq_arrival_time.tv_sec +
2369 /* Put the lock to the waiting list and force the cancel */
2370 ldlm_set_ast_sent(lock);
2373 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
2374 !mdt_object_remote(child) && child != parent) {
2375 mdt_object_put(info->mti_env, child);
2376 rc = mdt_pack_size2body(info, child_fid,
2378 if (rc != 0 && child_bits & MDS_INODELOCK_DOM) {
2379 /* DOM lock was taken in advance but this is
2380 * not DoM file. Drop the lock.
2382 lock_res_and_lock(lock);
2383 ldlm_inodebits_drop(lock, MDS_INODELOCK_DOM);
2384 unlock_res_and_lock(lock);
2386 LDLM_LOCK_PUT(lock);
2387 GOTO(unlock_parent, rc = 0);
2389 LDLM_LOCK_PUT(lock);
2395 mdt_object_put(info->mti_env, child);
2398 mdt_object_unlock(info, parent, lhp, 1);
2402 /* normal handler: should release the child lock */
2403 static int mdt_getattr_name(struct tgt_session_info *tsi)
2405 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2406 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
2407 struct mdt_body *reqbody;
2408 struct mdt_body *repbody;
2413 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
2414 LASSERT(reqbody != NULL);
2415 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2416 LASSERT(repbody != NULL);
2418 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
2419 repbody->mbo_eadatasize = 0;
2420 repbody->mbo_aclsize = 0;
2422 rc = mdt_init_ucred(info, reqbody);
2424 GOTO(out_shrink, rc);
2426 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
2427 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
2428 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
2429 lhc->mlh_reg_lh.cookie = 0;
2431 mdt_exit_ucred(info);
2434 mdt_client_compatibility(info);
2435 rc2 = mdt_fix_reply(info);
2438 mdt_thread_info_fini(info);
2442 static int mdt_rmfid_unlink(struct mdt_thread_info *info,
2443 const struct lu_fid *pfid,
2444 const struct lu_name *name,
2445 struct mdt_object *obj, s64 ctime)
2447 struct lu_fid *child_fid = &info->mti_tmp_fid1;
2448 struct ldlm_enqueue_info *einfo = &info->mti_einfo[0];
2449 struct mdt_device *mdt = info->mti_mdt;
2450 struct md_attr *ma = &info->mti_attr;
2451 struct mdt_lock_handle *parent_lh;
2452 struct mdt_lock_handle *child_lh;
2453 struct mdt_object *pobj;
2454 bool cos_incompat = false;
2458 pobj = mdt_object_find(info->mti_env, mdt, pfid);
2460 GOTO(out, rc = PTR_ERR(pobj));
2462 parent_lh = &info->mti_lh[MDT_LH_PARENT];
2463 mdt_lock_pdo_init(parent_lh, LCK_PW, name);
2464 rc = mdt_object_lock(info, pobj, parent_lh, MDS_INODELOCK_UPDATE);
2466 GOTO(put_parent, rc);
2468 if (mdt_object_remote(pobj))
2469 cos_incompat = true;
2471 rc = mdo_lookup(info->mti_env, mdt_object_child(pobj),
2472 name, child_fid, &info->mti_spec);
2474 GOTO(unlock_parent, rc);
2476 if (!lu_fid_eq(child_fid, mdt_object_fid(obj)))
2477 GOTO(unlock_parent, rc = -EREMCHG);
2479 child_lh = &info->mti_lh[MDT_LH_CHILD];
2480 mdt_lock_reg_init(child_lh, LCK_EX);
2481 rc = mdt_reint_striped_lock(info, obj, child_lh,
2482 MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE,
2483 einfo, cos_incompat);
2485 GOTO(unlock_parent, rc);
2487 if (atomic_read(&obj->mot_open_count)) {
2488 CDEBUG(D_OTHER, "object "DFID" open, skip\n",
2489 PFID(mdt_object_fid(obj)));
2490 GOTO(unlock_child, rc = -EBUSY);
2494 ma->ma_valid = MA_INODE;
2495 ma->ma_attr.la_valid = LA_CTIME;
2496 ma->ma_attr.la_ctime = ctime;
2498 mutex_lock(&obj->mot_lov_mutex);
2500 rc = mdo_unlink(info->mti_env, mdt_object_child(pobj),
2501 mdt_object_child(obj), name, ma, 0);
2503 mutex_unlock(&obj->mot_lov_mutex);
2506 mdt_reint_striped_unlock(info, obj, child_lh, einfo, 1);
2508 mdt_object_unlock(info, pobj, parent_lh, 1);
2510 mdt_object_put(info->mti_env, pobj);
2515 static int mdt_rmfid_check_permission(struct mdt_thread_info *info,
2516 struct mdt_object *obj)
2518 struct lu_ucred *uc = lu_ucred(info->mti_env);
2519 struct md_attr *ma = &info->mti_attr;
2520 struct lu_attr *la = &ma->ma_attr;
2524 ma->ma_need = MA_INODE;
2525 rc = mo_attr_get(info->mti_env, mdt_object_child(obj), ma);
2529 if (la->la_flags & LUSTRE_IMMUTABLE_FL)
2532 if (cap_raised(uc->uc_cap, CAP_DAC_OVERRIDE))
2534 if (uc->uc_fsuid == la->la_uid) {
2535 if ((la->la_mode & S_IWUSR) == 0)
2537 } else if (uc->uc_fsgid == la->la_gid) {
2538 if ((la->la_mode & S_IWGRP) == 0)
2540 } else if ((la->la_mode & S_IWOTH) == 0) {
2548 static int mdt_rmfid_one(struct mdt_thread_info *info, struct lu_fid *fid,
2551 struct mdt_device *mdt = info->mti_mdt;
2552 struct mdt_object *obj = NULL;
2553 struct linkea_data ldata = { NULL };
2554 struct lu_buf *buf = &info->mti_big_buf;
2555 struct lu_name *name = &info->mti_name;
2556 struct lu_fid *pfid = &info->mti_tmp_fid1;
2557 struct link_ea_header *leh;
2558 struct link_ea_entry *lee;
2559 int reclen, count, rc = 0;
2562 if (!fid_is_sane(fid))
2563 GOTO(out, rc = -EINVAL);
2565 if (!fid_is_namespace_visible(fid))
2566 GOTO(out, rc = -EINVAL);
2568 obj = mdt_object_find(info->mti_env, mdt, fid);
2570 GOTO(out, rc = PTR_ERR(obj));
2572 if (mdt_object_remote(obj))
2573 GOTO(out, rc = -EREMOTE);
2574 if (!mdt_object_exists(obj) || lu_object_is_dying(&obj->mot_header))
2575 GOTO(out, rc = -ENOENT);
2577 rc = mdt_rmfid_check_permission(info, obj);
2582 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
2584 GOTO(out, rc = -ENOMEM);
2587 rc = mdt_links_read(info, obj, &ldata);
2592 lee = (struct link_ea_entry *)(leh + 1);
2593 for (count = 0; count < leh->leh_reccount; count++) {
2594 /* remove every hardlink */
2595 linkea_entry_unpack(lee, &reclen, name, pfid);
2596 lee = (struct link_ea_entry *) ((char *)lee + reclen);
2597 rc = mdt_rmfid_unlink(info, pfid, name, obj, ctime);
2603 if (obj && !IS_ERR(obj))
2604 mdt_object_put(info->mti_env, obj);
2605 if (info->mti_big_buf.lb_buf)
2606 lu_buf_free(&info->mti_big_buf);
2611 static int mdt_rmfid(struct tgt_session_info *tsi)
2613 struct mdt_thread_info *mti = tsi2mdt_info(tsi);
2614 struct mdt_body *reqbody;
2615 struct lu_fid *fids, *rfids;
2621 reqbody = req_capsule_client_get(tsi->tsi_pill, &RMF_MDT_BODY);
2622 if (reqbody == NULL)
2624 bufsize = req_capsule_get_size(tsi->tsi_pill, &RMF_FID_ARRAY,
2626 nr = bufsize / sizeof(struct lu_fid);
2627 if (nr * sizeof(struct lu_fid) != bufsize)
2629 req_capsule_set_size(tsi->tsi_pill, &RMF_RCS,
2630 RCL_SERVER, nr * sizeof(__u32));
2631 req_capsule_set_size(tsi->tsi_pill, &RMF_FID_ARRAY,
2632 RCL_SERVER, nr * sizeof(struct lu_fid));
2633 rc = req_capsule_server_pack(tsi->tsi_pill);
2635 GOTO(out, rc = err_serious(rc));
2636 fids = req_capsule_client_get(tsi->tsi_pill, &RMF_FID_ARRAY);
2639 rcs = req_capsule_server_get(tsi->tsi_pill, &RMF_RCS);
2641 rfids = req_capsule_server_get(tsi->tsi_pill, &RMF_FID_ARRAY);
2644 mdt_init_ucred(mti, reqbody);
2645 for (i = 0; i < nr; i++) {
2647 rcs[i] = mdt_rmfid_one(mti, fids + i, reqbody->mbo_ctime);
2649 mdt_exit_ucred(mti);
2655 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2656 void *karg, void __user *uarg);
2658 int mdt_io_set_info(struct tgt_session_info *tsi)
2660 struct ptlrpc_request *req = tgt_ses_req(tsi);
2661 struct ost_body *body = NULL, *repbody;
2662 void *key, *val = NULL;
2663 int keylen, vallen, rc = 0;
2664 bool is_grant_shrink;
2668 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
2670 DEBUG_REQ(D_HA, req, "no set_info key");
2671 RETURN(err_serious(-EFAULT));
2673 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
2676 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
2678 DEBUG_REQ(D_HA, req, "no set_info val");
2679 RETURN(err_serious(-EFAULT));
2681 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
2684 is_grant_shrink = KEY_IS(KEY_GRANT_SHRINK);
2685 if (is_grant_shrink)
2686 /* In this case the value is actually an RMF_OST_BODY, so we
2687 * transmutate the type of this PTLRPC */
2688 req_capsule_extend(tsi->tsi_pill, &RQF_OST_SET_GRANT_INFO);
2690 rc = req_capsule_server_pack(tsi->tsi_pill);
2694 if (is_grant_shrink) {
2695 body = req_capsule_client_get(tsi->tsi_pill, &RMF_OST_BODY);
2697 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
2700 /** handle grant shrink, similar to a read request */
2701 tgt_grant_prepare_read(tsi->tsi_env, tsi->tsi_exp,
2704 CERROR("%s: Unsupported key %s\n",
2705 tgt_name(tsi->tsi_tgt), (char *)key);
2713 static int mdt_set_info(struct tgt_session_info *tsi)
2715 struct ptlrpc_request *req = tgt_ses_req(tsi);
2718 int keylen, vallen, rc = 0;
2722 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
2724 DEBUG_REQ(D_HA, req, "no set_info key");
2725 RETURN(err_serious(-EFAULT));
2728 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
2731 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
2733 DEBUG_REQ(D_HA, req, "no set_info val");
2734 RETURN(err_serious(-EFAULT));
2737 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
2740 /* Swab any part of val you need to here */
2741 if (KEY_IS(KEY_READ_ONLY)) {
2742 spin_lock(&req->rq_export->exp_lock);
2744 *exp_connect_flags_ptr(req->rq_export) |=
2747 *exp_connect_flags_ptr(req->rq_export) &=
2748 ~OBD_CONNECT_RDONLY;
2749 spin_unlock(&req->rq_export->exp_lock);
2750 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2751 struct changelog_setinfo *cs = val;
2753 if (vallen != sizeof(*cs)) {
2754 CERROR("%s: bad changelog_clear setinfo size %d\n",
2755 tgt_name(tsi->tsi_tgt), vallen);
2758 if (req_capsule_req_need_swab(&req->rq_pill)) {
2759 __swab64s(&cs->cs_recno);
2760 __swab32s(&cs->cs_id);
2763 if (!mdt_is_rootadmin(tsi2mdt_info(tsi)))
2765 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
2767 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
2769 obd_export_evict_by_nid(req->rq_export->exp_obd, val);
2776 static int mdt_readpage(struct tgt_session_info *tsi)
2778 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
2779 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
2780 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
2781 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
2782 struct mdt_body *repbody;
2788 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
2789 RETURN(err_serious(-ENOMEM));
2791 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
2792 if (repbody == NULL || reqbody == NULL)
2793 RETURN(err_serious(-EFAULT));
2796 * prepare @rdpg before calling lower layers and transfer itself. Here
2797 * reqbody->size contains offset of where to start to read and
2798 * reqbody->nlink contains number bytes to read.
2800 rdpg->rp_hash = reqbody->mbo_size;
2801 if (rdpg->rp_hash != reqbody->mbo_size) {
2802 CERROR("Invalid hash: %#llx != %#llx\n",
2803 rdpg->rp_hash, reqbody->mbo_size);
2807 rdpg->rp_attrs = reqbody->mbo_mode;
2808 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
2809 rdpg->rp_attrs |= LUDA_64BITHASH;
2810 rdpg->rp_count = min_t(unsigned int, reqbody->mbo_nlink,
2811 exp_max_brw_size(tsi->tsi_exp));
2812 rdpg->rp_npages = (rdpg->rp_count + PAGE_SIZE - 1) >>
2814 OBD_ALLOC_PTR_ARRAY_LARGE(rdpg->rp_pages, rdpg->rp_npages);
2815 if (rdpg->rp_pages == NULL)
2818 for (i = 0; i < rdpg->rp_npages; ++i) {
2819 rdpg->rp_pages[i] = alloc_page(GFP_NOFS);
2820 if (rdpg->rp_pages[i] == NULL)
2821 GOTO(free_rdpg, rc = -ENOMEM);
2824 /* call lower layers to fill allocated pages with directory data */
2825 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
2827 GOTO(free_rdpg, rc);
2829 /* send pages to client */
2830 rc = tgt_sendpage(tsi, rdpg, rc);
2835 for (i = 0; i < rdpg->rp_npages; i++)
2836 if (rdpg->rp_pages[i] != NULL)
2837 __free_page(rdpg->rp_pages[i]);
2838 OBD_FREE_PTR_ARRAY_LARGE(rdpg->rp_pages, rdpg->rp_npages);
2840 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
2846 static int mdt_fix_attr_ucred(struct mdt_thread_info *info, __u32 op)
2848 struct lu_ucred *uc = mdt_ucred_check(info);
2849 struct lu_attr *attr = &info->mti_attr.ma_attr;
2854 if (op != REINT_SETATTR) {
2855 if ((attr->la_valid & LA_UID) && (attr->la_uid != -1))
2856 attr->la_uid = uc->uc_fsuid;
2857 /* for S_ISGID, inherit gid from his parent, such work will be
2858 * done in cmm/mdd layer, here set all cases as uc->uc_fsgid. */
2859 if ((attr->la_valid & LA_GID) && (attr->la_gid != -1))
2860 attr->la_gid = uc->uc_fsgid;
2866 static inline bool mdt_is_readonly_open(struct mdt_thread_info *info, __u32 op)
2868 return op == REINT_OPEN &&
2869 !(info->mti_spec.sp_cr_flags & (MDS_FMODE_WRITE | MDS_OPEN_CREAT));
2872 static void mdt_preset_secctx_size(struct mdt_thread_info *info)
2874 struct req_capsule *pill = info->mti_pill;
2876 if (req_capsule_has_field(pill, &RMF_FILE_SECCTX,
2878 req_capsule_has_field(pill, &RMF_FILE_SECCTX_NAME,
2880 if (req_capsule_get_size(pill, &RMF_FILE_SECCTX_NAME,
2882 /* pre-set size in server part with max size */
2883 req_capsule_set_size(pill, &RMF_FILE_SECCTX,
2885 OBD_MAX_DEFAULT_EA_SIZE);
2887 req_capsule_set_size(pill, &RMF_FILE_SECCTX,
2892 static int mdt_reint_internal(struct mdt_thread_info *info,
2893 struct mdt_lock_handle *lhc,
2896 struct req_capsule *pill = info->mti_pill;
2897 struct mdt_body *repbody;
2902 rc = mdt_reint_unpack(info, op);
2904 CERROR("Can't unpack reint, rc %d\n", rc);
2905 RETURN(err_serious(rc));
2909 /* check if the file system is set to readonly. O_RDONLY open
2910 * is still allowed even the file system is set to readonly mode */
2911 if (mdt_rdonly(info->mti_exp) && !mdt_is_readonly_open(info, op))
2912 RETURN(err_serious(-EROFS));
2914 /* for replay (no_create) lmm is not needed, client has it already */
2915 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2916 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2919 /* llog cookies are always 0, the field is kept for compatibility */
2920 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2921 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
2923 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
2924 * by default. If the target object has more ACL entries, then
2925 * enlarge the buffer when necessary. */
2926 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
2927 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
2928 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
2930 mdt_preset_secctx_size(info);
2931 mdt_preset_encctx_size(info);
2933 rc = req_capsule_server_pack(pill);
2935 CERROR("Can't pack response, rc %d\n", rc);
2936 RETURN(err_serious(rc));
2939 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
2940 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
2942 repbody->mbo_eadatasize = 0;
2943 repbody->mbo_aclsize = 0;
2946 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
2948 /* for replay no cookkie / lmm need, because client have this already */
2949 if (info->mti_spec.no_create)
2950 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2951 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
2953 rc = mdt_init_ucred_reint(info);
2955 GOTO(out_shrink, rc);
2957 rc = mdt_fix_attr_ucred(info, op);
2959 GOTO(out_ucred, rc = err_serious(rc));
2961 rc = mdt_check_resent(info, mdt_reconstruct, lhc);
2963 GOTO(out_ucred, rc);
2964 } else if (rc == 1) {
2965 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt");
2966 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
2967 GOTO(out_ucred, rc);
2969 rc = mdt_reint_rec(info, lhc);
2972 mdt_exit_ucred(info);
2974 mdt_client_compatibility(info);
2976 rc2 = mdt_fix_reply(info);
2981 * Data-on-MDT optimization - read data along with OPEN and return it
2982 * in reply when possible.
2984 if (rc == 0 && op == REINT_OPEN && !req_is_replay(pill->rc_req))
2985 rc = mdt_dom_read_on_open(info, info->mti_mdt,
2991 static long mdt_reint_opcode(struct ptlrpc_request *req,
2992 const struct req_format **fmt)
2994 struct mdt_device *mdt;
2995 struct mdt_rec_reint *rec;
2998 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
3000 opc = rec->rr_opcode;
3001 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
3002 if (opc < REINT_MAX && fmt[opc] != NULL)
3003 req_capsule_extend(&req->rq_pill, fmt[opc]);
3005 mdt = mdt_exp2dev(req->rq_export);
3006 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
3007 " rc = %d\n", req->rq_export->exp_obd->obd_name,
3008 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
3009 opc = err_serious(-EFAULT);
3012 opc = err_serious(-EFAULT);
3017 static int mdt_reint(struct tgt_session_info *tsi)
3021 static const struct req_format *reint_fmts[REINT_MAX] = {
3022 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
3023 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
3024 [REINT_LINK] = &RQF_MDS_REINT_LINK,
3025 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
3026 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
3027 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
3028 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
3029 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
3030 [REINT_MIGRATE] = &RQF_MDS_REINT_MIGRATE,
3031 [REINT_RESYNC] = &RQF_MDS_REINT_RESYNC,
3036 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
3038 struct mdt_thread_info *info = tsi2mdt_info(tsi);
3040 * No lock possible here from client to pass it to reint code
3043 rc = mdt_reint_internal(info, NULL, opc);
3044 mdt_thread_info_fini(info);
3049 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
3053 /* this should sync the whole device */
3054 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
3056 struct dt_device *dt = mdt->mdt_bottom;
3060 rc = dt->dd_ops->dt_sync(env, dt);
3064 /* this should sync this object */
3065 static int mdt_object_sync(const struct lu_env *env, struct obd_export *exp,
3066 struct mdt_object *mo)
3072 if (!mdt_object_exists(mo)) {
3073 CWARN("%s: non existing object "DFID": rc = %d\n",
3074 exp->exp_obd->obd_name, PFID(mdt_object_fid(mo)),
3079 if (S_ISREG(lu_object_attr(&mo->mot_obj))) {
3080 struct lu_target *tgt = tgt_ses_info(env)->tsi_tgt;
3081 dt_obj_version_t version;
3083 version = dt_version_get(env, mdt_obj2dt(mo));
3084 if (version > tgt->lut_obd->obd_last_committed)
3085 rc = mo_object_sync(env, mdt_object_child(mo));
3087 rc = mo_object_sync(env, mdt_object_child(mo));
3093 static int mdt_sync(struct tgt_session_info *tsi)
3095 struct ptlrpc_request *req = tgt_ses_req(tsi);
3096 struct req_capsule *pill = tsi->tsi_pill;
3097 struct mdt_body *body;
3098 ktime_t kstart = ktime_get();
3103 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
3104 RETURN(err_serious(-ENOMEM));
3106 if (fid_seq(&tsi->tsi_mdt_body->mbo_fid1) == 0) {
3107 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
3109 struct mdt_thread_info *info = tsi2mdt_info(tsi);
3111 if (unlikely(info->mti_object == NULL))
3114 /* sync an object */
3115 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp,
3118 const struct lu_fid *fid;
3119 struct lu_attr *la = &info->mti_attr.ma_attr;
3121 info->mti_attr.ma_need = MA_INODE;
3122 info->mti_attr.ma_valid = 0;
3123 rc = mdt_attr_get_complex(info, info->mti_object,
3126 body = req_capsule_server_get(pill,
3128 fid = mdt_object_fid(info->mti_object);
3129 mdt_pack_attr2body(info, body, la, fid);
3132 mdt_thread_info_fini(info);
3135 mdt_counter_incr(req, LPROC_MDT_SYNC,
3136 ktime_us_delta(ktime_get(), kstart));
3141 static int mdt_data_sync(struct tgt_session_info *tsi)
3143 struct mdt_thread_info *info;
3144 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
3145 struct ost_body *body = tsi->tsi_ost_body;
3146 struct ost_body *repbody;
3147 struct mdt_object *mo = NULL;
3153 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
3155 /* if no fid is specified then do nothing,
3156 * device sync is done via MDS_SYNC */
3157 if (fid_is_zero(&tsi->tsi_fid))
3160 mo = mdt_object_find(tsi->tsi_env, mdt, &tsi->tsi_fid);
3162 RETURN(PTR_ERR(mo));
3164 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp, mo);
3168 repbody->oa.o_oi = body->oa.o_oi;
3169 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
3171 info = tsi2mdt_info(tsi);
3172 ma = &info->mti_attr;
3173 ma->ma_need = MA_INODE;
3175 rc = mdt_attr_get_complex(info, mo, ma);
3177 obdo_from_la(&repbody->oa, &ma->ma_attr, VALID_FLAGS);
3180 mdt_thread_info_fini(info);
3185 mdt_object_put(tsi->tsi_env, mo);
3190 * Handle quota control requests to consult current usage/limit, but also
3191 * to configure quota enforcement
3193 static int mdt_quotactl(struct tgt_session_info *tsi)
3195 struct obd_export *exp = tsi->tsi_exp;
3196 struct req_capsule *pill = tsi->tsi_pill;
3197 struct obd_quotactl *oqctl, *repoqc;
3199 struct mdt_device *mdt = mdt_exp2dev(exp);
3200 struct lu_device *qmt = mdt->mdt_qmt_dev;
3201 struct lu_nodemap *nodemap;
3204 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
3206 RETURN(err_serious(-EPROTO));
3208 rc = req_capsule_server_pack(pill);
3210 RETURN(err_serious(rc));
3212 nodemap = nodemap_get_from_exp(exp);
3213 if (IS_ERR(nodemap))
3214 RETURN(PTR_ERR(nodemap));
3216 switch (oqctl->qc_cmd) {
3217 /* master quotactl */
3220 case LUSTRE_Q_SETDEFAULT:
3221 case LUSTRE_Q_SETQUOTAPOOL:
3222 case LUSTRE_Q_SETINFOPOOL:
3223 case LUSTRE_Q_SETDEFAULT_POOL:
3224 case LUSTRE_Q_DELETEQID:
3225 if (!nodemap_can_setquota(nodemap, oqctl->qc_type,
3227 GOTO(out_nodemap, rc = -EPERM);
3231 case LUSTRE_Q_GETDEFAULT:
3232 case LUSTRE_Q_GETQUOTAPOOL:
3233 case LUSTRE_Q_GETINFOPOOL:
3234 case LUSTRE_Q_GETDEFAULT_POOL:
3236 GOTO(out_nodemap, rc = -EOPNOTSUPP);
3237 /* slave quotactl */
3244 CERROR("%s: unsupported quotactl command %d: rc = %d\n",
3245 mdt_obd_name(mdt), oqctl->qc_cmd, rc);
3246 GOTO(out_nodemap, rc);
3250 switch (oqctl->qc_type) {
3252 id = nodemap_map_id(nodemap, NODEMAP_UID,
3253 NODEMAP_CLIENT_TO_FS, id);
3256 id = nodemap_map_id(nodemap, NODEMAP_GID,
3257 NODEMAP_CLIENT_TO_FS, id);
3260 id = nodemap_map_id(nodemap, NODEMAP_PROJID,
3261 NODEMAP_CLIENT_TO_FS, id);
3264 GOTO(out_nodemap, rc = -EOPNOTSUPP);
3266 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
3268 GOTO(out_nodemap, rc = err_serious(-EFAULT));
3270 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA)
3271 barrier_exit(tsi->tsi_tgt->lut_bottom);
3273 if (oqctl->qc_id != id)
3274 swap(oqctl->qc_id, id);
3276 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA) {
3277 if (unlikely(!barrier_entry(tsi->tsi_tgt->lut_bottom)))
3278 RETURN(-EINPROGRESS);
3281 switch (oqctl->qc_cmd) {
3287 case LUSTRE_Q_SETDEFAULT:
3288 case LUSTRE_Q_GETDEFAULT:
3289 case LUSTRE_Q_SETQUOTAPOOL:
3290 case LUSTRE_Q_GETQUOTAPOOL:
3291 case LUSTRE_Q_SETINFOPOOL:
3292 case LUSTRE_Q_GETINFOPOOL:
3293 case LUSTRE_Q_SETDEFAULT_POOL:
3294 case LUSTRE_Q_GETDEFAULT_POOL:
3295 case LUSTRE_Q_DELETEQID:
3296 /* forward quotactl request to QMT */
3297 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
3302 /* slave quotactl */
3303 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
3308 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
3309 GOTO(out_nodemap, rc = -EFAULT);
3312 if (oqctl->qc_id != id)
3313 swap(oqctl->qc_id, id);
3315 QCTL_COPY(repoqc, oqctl);
3319 nodemap_putref(nodemap);
3324 /** clone llog ctxt from child (mdd)
3325 * This allows remote llog (replicator) access.
3326 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
3327 * context was originally set up, or we can handle them directly.
3328 * I choose the latter, but that means I need any llog
3329 * contexts set up by child to be accessable by the mdt. So we clone the
3330 * context into our context list here.
3332 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
3335 struct md_device *next = mdt->mdt_child;
3336 struct llog_ctxt *ctxt;
3339 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
3342 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
3343 if (rc || ctxt == NULL) {
3347 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
3349 CERROR("Can't set mdt ctxt %d\n", rc);
3354 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
3355 struct mdt_device *mdt, int idx)
3357 struct llog_ctxt *ctxt;
3359 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
3362 /* Put once for the get we just did, and once for the clone */
3363 llog_ctxt_put(ctxt);
3364 llog_ctxt_put(ctxt);
3369 * sec context handlers
3371 static int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
3373 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
3379 * quota request handlers
3381 static int mdt_quota_dqacq(struct tgt_session_info *tsi)
3383 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
3384 struct lu_device *qmt = mdt->mdt_qmt_dev;
3389 RETURN(err_serious(-EOPNOTSUPP));
3391 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
3395 struct mdt_object *mdt_object_new(const struct lu_env *env,
3396 struct mdt_device *d,
3397 const struct lu_fid *f)
3399 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
3400 struct lu_object *o;
3401 struct mdt_object *m;
3404 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
3405 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
3406 if (unlikely(IS_ERR(o)))
3407 m = (struct mdt_object *)o;
3413 struct mdt_object *mdt_object_find(const struct lu_env *env,
3414 struct mdt_device *d,
3415 const struct lu_fid *f)
3417 struct lu_object *o;
3418 struct mdt_object *m;
3421 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
3422 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
3423 if (unlikely(IS_ERR(o)))
3424 m = (struct mdt_object *)o;
3432 * Asyncronous commit for mdt device.
3434 * Pass asynchonous commit call down the MDS stack.
3436 * \param env environment
3437 * \param mdt the mdt device
3439 static void mdt_device_commit_async(const struct lu_env *env,
3440 struct mdt_device *mdt)
3442 struct dt_device *dt = mdt->mdt_bottom;
3446 rc = dt->dd_ops->dt_commit_async(env, dt);
3447 if (unlikely(rc != 0))
3448 CWARN("%s: async commit start failed: rc = %d\n",
3449 mdt_obd_name(mdt), rc);
3450 atomic_inc(&mdt->mdt_async_commit_count);
3455 * Mark the lock as "synchonous".
3457 * Mark the lock to deffer transaction commit to the unlock time.
3459 * \param lock the lock to mark as "synchonous"
3461 * \see mdt_is_lock_sync
3462 * \see mdt_save_lock
3464 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
3466 lock->l_ast_data = (void*)1;
3470 * Check whehter the lock "synchonous" or not.
3472 * \param lock the lock to check
3473 * \retval 1 the lock is "synchonous"
3474 * \retval 0 the lock isn't "synchronous"
3476 * \see mdt_set_lock_sync
3477 * \see mdt_save_lock
3479 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
3481 return lock->l_ast_data != NULL;
3485 * Blocking AST for mdt locks.
3487 * Starts transaction commit if in case of COS lock conflict or
3488 * deffers such a commit to the mdt_save_lock.
3490 * \param lock the lock which blocks a request or cancelling lock
3491 * \param desc unused
3492 * \param data unused
3493 * \param flag indicates whether this cancelling or blocking callback
3495 * \see ldlm_blocking_ast_nocheck
3497 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
3498 void *data, int flag)
3500 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
3501 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
3502 struct ldlm_cb_set_arg *arg = data;
3503 bool commit_async = false;
3507 if (flag == LDLM_CB_CANCELING)
3510 lock_res_and_lock(lock);
3511 if (lock->l_blocking_ast != mdt_blocking_ast) {
3512 unlock_res_and_lock(lock);
3516 /* A blocking ast may be sent from ldlm_lock_decref_internal
3517 * when the last reference to a local lock was released and
3518 * during blocking event from ldlm_work_bl_ast_lock().
3519 * The 'data' parameter is l_ast_data in the first case and
3520 * callback arguments in the second one. Distinguish them by that.
3522 if (!data || data == lock->l_ast_data || !arg->bl_desc)
3523 goto skip_cos_checks;
3525 if (lock->l_req_mode & (LCK_PW | LCK_EX)) {
3526 if (mdt_cos_is_enabled(mdt)) {
3527 if (!arg->bl_desc->bl_same_client)
3528 mdt_set_lock_sync(lock);
3529 } else if (mdt_slc_is_enabled(mdt) &&
3530 arg->bl_desc->bl_cos_incompat) {
3531 mdt_set_lock_sync(lock);
3533 * we may do extra commit here, but there is a small
3534 * window to miss a commit: lock was unlocked (saved),
3535 * then a conflict lock queued and we come here, but
3536 * REP-ACK not received, so lock was not converted to
3538 * Fortunately this window is quite small, so the
3539 * extra commit should be rare (not to say distributed
3540 * operation is rare too).
3542 commit_async = true;
3544 } else if (lock->l_req_mode == LCK_COS) {
3545 commit_async = true;
3549 rc = ldlm_blocking_ast_nocheck(lock);
3554 rc = lu_env_init(&env, LCT_LOCAL);
3555 if (unlikely(rc != 0))
3556 CWARN("%s: lu_env initialization failed, cannot "
3557 "start asynchronous commit: rc = %d\n",
3560 mdt_device_commit_async(&env, mdt);
3567 * Blocking AST for cross-MDT lock
3569 * Discard lock from uncommitted_slc_locks and cancel it.
3571 * \param lock the lock which blocks a request or cancelling lock
3572 * \param desc unused
3573 * \param data unused
3574 * \param flag indicates whether this cancelling or blocking callback
3575 * \retval 0 on success
3576 * \retval negative number on error
3578 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
3579 void *data, int flag)
3585 case LDLM_CB_BLOCKING: {
3586 struct lustre_handle lockh;
3588 ldlm_lock2handle(lock, &lockh);
3589 rc = ldlm_cli_cancel(&lockh,
3590 ldlm_is_atomic_cb(lock) ? 0 : LCF_ASYNC);
3592 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
3597 case LDLM_CB_CANCELING: {
3598 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
3599 struct mdt_device *mdt =
3600 mdt_dev(obd->obd_lu_dev->ld_site->ls_top_dev);
3602 LDLM_DEBUG(lock, "Revoke remote lock\n");
3604 /* discard slc lock here so that it can be cleaned anytime,
3605 * especially for cleanup_resource() */
3606 tgt_discard_slc_lock(&mdt->mdt_lut, lock);
3608 /* once we cache lock, l_ast_data is set to mdt_object */
3609 if (lock->l_ast_data != NULL) {
3610 struct mdt_object *mo = lock->l_ast_data;
3613 rc = lu_env_init(&env, LCT_MD_THREAD);
3614 if (unlikely(rc != 0)) {
3615 CWARN("%s: lu_env initialization failed, object %p "DFID" is leaked!: rc = %d\n",
3617 PFID(mdt_object_fid(mo)), rc);
3621 if (lock->l_policy_data.l_inodebits.bits &
3622 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)) {
3623 rc = mo_invalidate(&env, mdt_object_child(mo));
3624 mo->mot_cache_attr = 0;
3626 mdt_object_put(&env, mo);
3638 int mdt_check_resent_lock(struct mdt_thread_info *info,
3639 struct mdt_object *mo,
3640 struct mdt_lock_handle *lhc)
3642 /* the lock might already be gotten in ldlm_handle_enqueue() */
3643 if (unlikely(lustre_handle_is_used(&lhc->mlh_reg_lh))) {
3644 struct ptlrpc_request *req = mdt_info_req(info);
3645 struct ldlm_lock *lock;
3647 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
3648 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
3650 /* Lock is pinned by ldlm_handle_enqueue0() as it is
3651 * a resend case, however, it could be already destroyed
3652 * due to client eviction or a raced cancel RPC. */
3653 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx",
3654 lhc->mlh_reg_lh.cookie);
3658 if (!fid_res_name_eq(mdt_object_fid(mo),
3659 &lock->l_resource->lr_name)) {
3660 CWARN("%s: Although resent, but still not "
3661 "get child lock:"DFID"\n",
3662 info->mti_exp->exp_obd->obd_name,
3663 PFID(mdt_object_fid(mo)));
3664 LDLM_LOCK_PUT(lock);
3667 LDLM_LOCK_PUT(lock);
3673 static void mdt_remote_object_lock_created_cb(struct ldlm_lock *lock)
3675 mdt_object_get(NULL, lock->l_ast_data);
3678 int mdt_remote_object_lock_try(struct mdt_thread_info *mti,
3679 struct mdt_object *o, const struct lu_fid *fid,
3680 struct lustre_handle *lh, enum ldlm_mode mode,
3681 __u64 *ibits, __u64 trybits, bool cache)
3683 struct ldlm_enqueue_info *einfo = &mti->mti_remote_einfo;
3684 union ldlm_policy_data *policy = &mti->mti_policy;
3685 struct ldlm_res_id *res_id = &mti->mti_res_id;
3689 LASSERT(mdt_object_remote(o));
3691 fid_build_reg_res_name(fid, res_id);
3693 memset(einfo, 0, sizeof(*einfo));
3694 einfo->ei_type = LDLM_IBITS;
3695 einfo->ei_mode = mode;
3696 einfo->ei_cb_bl = mdt_remote_blocking_ast;
3697 einfo->ei_cb_cp = ldlm_completion_ast;
3698 einfo->ei_enq_slave = 0;
3699 einfo->ei_res_id = res_id;
3700 einfo->ei_req_slot = 1;
3704 * if we cache lock, couple lock with mdt_object, so that object
3705 * can be easily found in lock ASTs.
3707 einfo->ei_cbdata = o;
3708 einfo->ei_cb_created = mdt_remote_object_lock_created_cb;
3711 memset(policy, 0, sizeof(*policy));
3712 policy->l_inodebits.bits = *ibits;
3713 policy->l_inodebits.try_bits = trybits;
3715 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
3718 /* Return successfully acquired bits to a caller */
3720 struct ldlm_lock *lock = ldlm_handle2lock(lh);
3723 *ibits = lock->l_policy_data.l_inodebits.bits;
3724 LDLM_LOCK_PUT(lock);
3729 int mdt_remote_object_lock(struct mdt_thread_info *mti, struct mdt_object *o,
3730 const struct lu_fid *fid, struct lustre_handle *lh,
3731 enum ldlm_mode mode, __u64 ibits, bool cache)
3733 return mdt_remote_object_lock_try(mti, o, fid, lh, mode, &ibits, 0,
3737 int mdt_object_local_lock(struct mdt_thread_info *info, struct mdt_object *o,
3738 struct mdt_lock_handle *lh, __u64 *ibits,
3739 __u64 trybits, bool cos_incompat)
3741 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
3742 union ldlm_policy_data *policy = &info->mti_policy;
3743 struct ldlm_res_id *res_id = &info->mti_res_id;
3744 __u64 dlmflags = 0, *cookie = NULL;
3748 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3749 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3750 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
3751 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
3754 LASSERT(lh->mlh_reg_mode == LCK_PW ||
3755 lh->mlh_reg_mode == LCK_EX);
3756 dlmflags |= LDLM_FL_COS_INCOMPAT;
3757 } else if (mdt_cos_is_enabled(info->mti_mdt)) {
3758 dlmflags |= LDLM_FL_COS_ENABLED;
3761 /* Only enqueue LOOKUP lock for remote object */
3762 LASSERT(ergo(mdt_object_remote(o), *ibits == MDS_INODELOCK_LOOKUP));
3764 /* Lease lock are granted with LDLM_FL_CANCEL_ON_BLOCK */
3765 if (lh->mlh_type == MDT_REG_LOCK && lh->mlh_reg_mode == LCK_EX &&
3766 *ibits == MDS_INODELOCK_OPEN)
3767 dlmflags |= LDLM_FL_CANCEL_ON_BLOCK;
3769 if (lh->mlh_type == MDT_PDO_LOCK) {
3770 /* check for exists after object is locked */
3771 if (mdt_object_exists(o) == 0) {
3772 /* Non-existent object shouldn't have PDO lock */
3775 /* Non-dir object shouldn't have PDO lock */
3776 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
3781 fid_build_reg_res_name(mdt_object_fid(o), res_id);
3782 dlmflags |= LDLM_FL_ATOMIC_CB;
3785 cookie = &info->mti_exp->exp_handle.h_cookie;
3788 * Take PDO lock on whole directory and build correct @res_id for lock
3789 * on part of directory.
3791 if (lh->mlh_pdo_hash != 0) {
3792 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
3793 mdt_lock_pdo_mode(info, o, lh);
3794 if (lh->mlh_pdo_mode != LCK_NL) {
3796 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
3797 * is never going to be sent to client and we do not
3798 * want it slowed down due to possible cancels.
3800 policy->l_inodebits.bits =
3801 *ibits & MDS_INODELOCK_UPDATE;
3802 policy->l_inodebits.try_bits =
3803 trybits & MDS_INODELOCK_UPDATE;
3804 /* at least one of them should be set */
3805 LASSERT(policy->l_inodebits.bits |
3806 policy->l_inodebits.try_bits);
3807 rc = mdt_fid_lock(info->mti_env, ns, &lh->mlh_pdo_lh,
3808 lh->mlh_pdo_mode, policy, res_id,
3810 if (unlikely(rc != 0))
3811 GOTO(out_unlock, rc);
3815 * Finish res_id initializing by name hash marking part of
3816 * directory which is taking modification.
3818 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
3821 policy->l_inodebits.bits = *ibits;
3822 policy->l_inodebits.try_bits = trybits;
3823 policy->l_inodebits.li_gid = lh->mlh_gid;
3826 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
3827 * going to be sent to client. If it is - mdt_intent_policy() path will
3828 * fix it up and turn FL_LOCAL flag off.
3830 rc = mdt_fid_lock(info->mti_env, ns, &lh->mlh_reg_lh, lh->mlh_reg_mode,
3831 policy, res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
3835 mdt_object_unlock(info, o, lh, 1);
3836 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
3837 lh->mlh_pdo_hash != 0 &&
3838 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
3839 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
3841 /* Return successfully acquired bits to a caller */
3843 struct ldlm_lock *lock = ldlm_handle2lock(&lh->mlh_reg_lh);
3846 *ibits = lock->l_policy_data.l_inodebits.bits;
3847 LDLM_LOCK_PUT(lock);
3853 mdt_object_lock_internal(struct mdt_thread_info *info, struct mdt_object *o,
3854 struct mdt_lock_handle *lh, __u64 *ibits,
3855 __u64 trybits, bool cos_incompat)
3857 struct mdt_lock_handle *local_lh = NULL;
3861 if (!mdt_object_remote(o)) {
3862 rc = mdt_object_local_lock(info, o, lh, ibits, trybits,
3867 /* XXX do not support PERM/LAYOUT/XATTR lock for remote object yet */
3868 *ibits &= ~(MDS_INODELOCK_PERM | MDS_INODELOCK_LAYOUT |
3869 MDS_INODELOCK_XATTR);
3871 /* Only enqueue LOOKUP lock for remote object */
3872 if (*ibits & MDS_INODELOCK_LOOKUP) {
3873 __u64 local = MDS_INODELOCK_LOOKUP;
3875 rc = mdt_object_local_lock(info, o, lh, &local, 0,
3883 if ((*ibits | trybits) & MDS_INODELOCK_UPDATE) {
3884 /* Sigh, PDO needs to enqueue 2 locks right now, but
3885 * enqueue RPC can only request 1 lock, to avoid extra
3886 * RPC, so it will instead enqueue EX lock for remote
3887 * object anyway XXX*/
3888 if (lh->mlh_type == MDT_PDO_LOCK &&
3889 lh->mlh_pdo_hash != 0) {
3891 "%s: "DFID" convert PDO lock to EX lock.\n",
3892 mdt_obd_name(info->mti_mdt),
3893 PFID(mdt_object_fid(o)));
3894 lh->mlh_pdo_hash = 0;
3895 lh->mlh_rreg_mode = LCK_EX;
3896 lh->mlh_type = MDT_REG_LOCK;
3899 rc = mdt_remote_object_lock_try(info, o, mdt_object_fid(o),
3902 ibits, trybits, false);
3903 if (rc != ELDLM_OK) {
3904 if (local_lh != NULL)
3905 mdt_object_unlock(info, o, local_lh, rc);
3910 /* other components like LFSCK can use lockless access
3911 * and populate cache, so we better invalidate it */
3912 mo_invalidate(info->mti_env, mdt_object_child(o));
3917 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
3918 struct mdt_lock_handle *lh, __u64 ibits)
3920 return mdt_object_lock_internal(info, o, lh, &ibits, 0, false);
3923 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
3924 struct mdt_lock_handle *lh, __u64 ibits,
3927 LASSERT(lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX);
3928 return mdt_object_lock_internal(info, o, lh, &ibits, 0,
3932 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
3933 struct mdt_lock_handle *lh, __u64 *ibits,
3934 __u64 trybits, bool cos_incompat)
3936 bool trylock_only = *ibits == 0;
3939 LASSERT(!(*ibits & trybits));
3940 rc = mdt_object_lock_internal(info, o, lh, ibits, trybits,
3942 if (rc && trylock_only) { /* clear error for try ibits lock only */
3943 LASSERT(*ibits == 0);
3950 * Save a lock within request object.
3952 * Keep the lock referenced until whether client ACK or transaction
3953 * commit happens or release the lock immediately depending on input
3954 * parameters. If COS is ON, a write lock is converted to COS lock
3957 * \param info thead info object
3958 * \param h lock handle
3959 * \param mode lock mode
3960 * \param decref force immediate lock releasing
3962 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
3963 enum ldlm_mode mode, int decref)
3967 if (lustre_handle_is_used(h)) {
3968 if (decref || !info->mti_has_trans ||
3969 !(mode & (LCK_PW | LCK_EX))) {
3970 mdt_fid_unlock(h, mode);
3972 struct mdt_device *mdt = info->mti_mdt;
3973 struct ldlm_lock *lock = ldlm_handle2lock(h);
3974 struct ptlrpc_request *req = mdt_info_req(info);
3975 bool cos = mdt_cos_is_enabled(mdt);
3976 bool convert_lock = !cos && mdt_slc_is_enabled(mdt);
3978 LASSERTF(lock != NULL, "no lock for cookie %#llx\n",
3981 /* there is no request if mdt_object_unlock() is called
3982 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
3983 if (likely(req != NULL)) {
3984 LDLM_DEBUG(lock, "save lock request %p reply "
3985 "state %p transno %lld\n", req,
3986 req->rq_reply_state, req->rq_transno);
3988 ldlm_lock_mode_downgrade(lock, LCK_COS);
3991 if (req->rq_export->exp_disconnected)
3992 mdt_fid_unlock(h, mode);
3994 ptlrpc_save_lock(req, h, mode, cos,
3997 mdt_fid_unlock(h, mode);
3999 if (mdt_is_lock_sync(lock)) {
4000 CDEBUG(D_HA, "found sync-lock,"
4001 " async commit started\n");
4002 mdt_device_commit_async(info->mti_env,
4005 LDLM_LOCK_PUT(lock);
4014 * Save cross-MDT lock in uncommitted_slc_locks
4016 * Keep the lock referenced until transaction commit happens or release the lock
4017 * immediately depending on input parameters.
4019 * \param info thead info object
4020 * \param h lock handle
4021 * \param mode lock mode
4022 * \param decref force immediate lock releasing
4024 static void mdt_save_remote_lock(struct mdt_thread_info *info,
4025 struct mdt_object *o, struct lustre_handle *h,
4026 enum ldlm_mode mode, int decref)
4030 if (lustre_handle_is_used(h)) {
4031 struct ldlm_lock *lock = ldlm_handle2lock(h);
4032 struct ptlrpc_request *req = mdt_info_req(info);
4035 (lock->l_policy_data.l_inodebits.bits &
4036 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)))
4037 mo_invalidate(info->mti_env, mdt_object_child(o));
4039 if (decref || !info->mti_has_trans || !req ||
4040 !(mode & (LCK_PW | LCK_EX))) {
4041 ldlm_lock_decref_and_cancel(h, mode);
4042 LDLM_LOCK_PUT(lock);
4044 tgt_save_slc_lock(&info->mti_mdt->mdt_lut, lock,
4046 ldlm_lock_decref(h, mode);
4055 * Unlock mdt object.
4057 * Immeditely release the regular lock and the PDO lock or save the
4058 * lock in request and keep them referenced until client ACK or
4059 * transaction commit.
4061 * \param info thread info object
4062 * \param o mdt object
4063 * \param lh mdt lock handle referencing regular and PDO locks
4064 * \param decref force immediate lock releasing
4066 * XXX o is not used and may be NULL, see hsm_cdt_request_completed().
4068 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
4069 struct mdt_lock_handle *lh, int decref)
4073 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
4074 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
4075 mdt_save_remote_lock(info, o, &lh->mlh_rreg_lh, lh->mlh_rreg_mode,
4081 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
4082 const struct lu_fid *f,
4083 struct mdt_lock_handle *lh,
4086 struct mdt_object *o;
4088 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
4092 rc = mdt_object_lock(info, o, lh, ibits);
4094 mdt_object_put(info->mti_env, o);
4101 void mdt_object_unlock_put(struct mdt_thread_info * info,
4102 struct mdt_object * o,
4103 struct mdt_lock_handle *lh,
4106 mdt_object_unlock(info, o, lh, decref);
4107 mdt_object_put(info->mti_env, o);
4111 * Generic code handling requests that have struct mdt_body passed in:
4113 * - extract mdt_body from request and save it in @info, if present;
4115 * - create lu_object, corresponding to the fid in mdt_body, and save it in
4118 * - if HAS_BODY flag is set for this request type check whether object
4119 * actually exists on storage (lu_object_exists()).
4122 static int mdt_body_unpack(struct mdt_thread_info *info,
4123 enum tgt_handler_flags flags)
4125 const struct mdt_body *body;
4126 struct mdt_object *obj;
4127 const struct lu_env *env;
4128 struct req_capsule *pill;
4132 env = info->mti_env;
4133 pill = info->mti_pill;
4135 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
4139 if (!(body->mbo_valid & OBD_MD_FLID))
4142 if (!fid_is_sane(&body->mbo_fid1)) {
4143 CERROR("Invalid fid: "DFID"\n", PFID(&body->mbo_fid1));
4147 obj = mdt_object_find(env, info->mti_mdt, &body->mbo_fid1);
4149 if ((flags & HAS_BODY) && !mdt_object_exists(obj)) {
4150 mdt_object_put(env, obj);
4153 info->mti_object = obj;
4162 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info,
4163 enum tgt_handler_flags flags)
4165 struct req_capsule *pill = info->mti_pill;
4170 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
4171 rc = mdt_body_unpack(info, flags);
4175 if (rc == 0 && (flags & HAS_REPLY)) {
4177 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
4178 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
4180 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
4181 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
4184 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
4185 * by default. If the target object has more ACL entries, then
4186 * enlarge the buffer when necessary. */
4187 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
4188 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
4189 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
4191 mdt_preset_secctx_size(info);
4192 mdt_preset_encctx_size(info);
4194 rc = req_capsule_server_pack(pill);
4196 CWARN("%s: cannot pack response: rc = %d\n",
4197 mdt_obd_name(info->mti_mdt), rc);
4202 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
4204 lh->mlh_type = MDT_NUL_LOCK;
4205 lh->mlh_reg_lh.cookie = 0ull;
4206 lh->mlh_reg_mode = LCK_MINMODE;
4207 lh->mlh_pdo_lh.cookie = 0ull;
4208 lh->mlh_pdo_mode = LCK_MINMODE;
4209 lh->mlh_rreg_lh.cookie = 0ull;
4210 lh->mlh_rreg_mode = LCK_MINMODE;
4213 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
4215 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
4216 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
4220 * Initialize fields of struct mdt_thread_info. Other fields are left in
4221 * uninitialized state, because it's too expensive to zero out whole
4222 * mdt_thread_info (> 1K) on each request arrival.
4224 void mdt_thread_info_init(struct ptlrpc_request *req,
4225 struct mdt_thread_info *info)
4229 info->mti_pill = &req->rq_pill;
4232 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
4233 mdt_lock_handle_init(&info->mti_lh[i]);
4235 /* mdt device: it can be NULL while CONNECT */
4236 if (req->rq_export) {
4237 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
4238 info->mti_exp = req->rq_export;
4240 info->mti_mdt = NULL;
4241 info->mti_env = req->rq_svc_thread->t_env;
4242 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
4244 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
4245 info->mti_big_buf = LU_BUF_NULL;
4246 info->mti_body = NULL;
4247 info->mti_object = NULL;
4248 info->mti_dlm_req = NULL;
4249 info->mti_has_trans = 0;
4250 info->mti_cross_ref = 0;
4251 info->mti_opdata = 0;
4252 info->mti_big_lmm_used = 0;
4253 info->mti_big_acl_used = 0;
4254 info->mti_som_strict = 0;
4256 info->mti_spec.no_create = 0;
4257 info->mti_spec.sp_rm_entry = 0;
4258 info->mti_spec.sp_permitted = 0;
4260 info->mti_spec.u.sp_ea.eadata = NULL;
4261 info->mti_spec.u.sp_ea.eadatalen = 0;
4264 void mdt_thread_info_fini(struct mdt_thread_info *info)
4268 if (info->mti_object != NULL) {
4269 mdt_object_put(info->mti_env, info->mti_object);
4270 info->mti_object = NULL;
4273 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
4274 mdt_lock_handle_fini(&info->mti_lh[i]);
4275 info->mti_env = NULL;
4276 info->mti_pill = NULL;
4277 info->mti_exp = NULL;
4278 info->mti_mdt = NULL;
4280 if (unlikely(info->mti_big_buf.lb_buf != NULL))
4281 lu_buf_free(&info->mti_big_buf);
4284 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
4286 struct mdt_thread_info *mti;
4288 mti = mdt_th_info(tsi->tsi_env);
4289 LASSERT(mti != NULL);
4291 mdt_thread_info_init(tgt_ses_req(tsi), mti);
4292 if (tsi->tsi_corpus != NULL) {
4293 mti->mti_object = mdt_obj(tsi->tsi_corpus);
4294 lu_object_get(tsi->tsi_corpus);
4296 mti->mti_body = tsi->tsi_mdt_body;
4297 mti->mti_dlm_req = tsi->tsi_dlm_req;
4302 static int mdt_tgt_connect(struct tgt_session_info *tsi)
4304 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_DELAY_CONDITIONAL) &&
4306 tsi2mdt_info(tsi)->mti_mdt->mdt_seq_site.ss_node_id)
4307 schedule_timeout_uninterruptible(cfs_time_seconds(3));
4309 return tgt_connect(tsi);
4312 static int mdt_intent_glimpse(enum ldlm_intent_flags it_opc,
4313 struct mdt_thread_info *info,
4314 struct ldlm_lock **lockp, __u64 flags)
4316 return mdt_glimpse_enqueue(info, info->mti_mdt->mdt_namespace,
4319 static int mdt_intent_brw(enum ldlm_intent_flags it_opc,
4320 struct mdt_thread_info *info,
4321 struct ldlm_lock **lockp, __u64 flags)
4323 return mdt_brw_enqueue(info, info->mti_mdt->mdt_namespace,
4327 int mdt_intent_lock_replace(struct mdt_thread_info *info,
4328 struct ldlm_lock **lockp,
4329 struct mdt_lock_handle *lh,
4330 __u64 flags, int result)
4332 struct ptlrpc_request *req = mdt_info_req(info);
4333 struct ldlm_lock *lock = *lockp;
4334 struct ldlm_lock *new_lock;
4336 /* If possible resent found a lock, @lh is set to its handle */
4337 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
4339 if (new_lock == NULL) {
4340 if (flags & LDLM_FL_INTENT_ONLY) {
4342 } else if (flags & LDLM_FL_RESENT) {
4343 /* Lock is pinned by ldlm_handle_enqueue0() as it is a
4344 * resend case, however, it could be already destroyed
4345 * due to client eviction or a raced cancel RPC.
4347 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx\n",
4348 lh->mlh_reg_lh.cookie);
4351 CERROR("%s: Invalid lockh=%#llx flags=%#llx fid1="DFID" fid2="DFID": rc = %d\n",
4352 mdt_obd_name(info->mti_mdt),
4353 lh->mlh_reg_lh.cookie, flags,
4354 PFID(&info->mti_tmp_fid1),
4355 PFID(&info->mti_tmp_fid2), result);
4358 lh->mlh_reg_lh.cookie = 0;
4363 * If we've already given this lock to a client once, then we should
4364 * have no readers or writers. Otherwise, we should have one reader
4365 * _or_ writer ref (which will be zeroed below) before returning the
4368 if (new_lock->l_export == req->rq_export) {
4369 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
4371 LASSERT(new_lock->l_export == NULL);
4372 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
4377 if (new_lock->l_export == req->rq_export) {
4379 * Already gave this to the client, which means that we
4380 * reconstructed a reply.
4382 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
4385 LDLM_LOCK_RELEASE(new_lock);
4386 lh->mlh_reg_lh.cookie = 0;
4387 RETURN(ELDLM_LOCK_REPLACED);
4391 * Fixup the lock to be given to the client.
4393 lock_res_and_lock(new_lock);
4394 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
4395 * possible blocking AST. */
4396 while (new_lock->l_readers > 0) {
4397 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
4398 lu_ref_del(&new_lock->l_reference, "user", new_lock);
4399 new_lock->l_readers--;
4401 while (new_lock->l_writers > 0) {
4402 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
4403 lu_ref_del(&new_lock->l_reference, "user", new_lock);
4404 new_lock->l_writers--;
4407 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
4408 new_lock->l_blocking_ast = lock->l_blocking_ast;
4409 new_lock->l_completion_ast = lock->l_completion_ast;
4410 if (ldlm_has_dom(new_lock))
4411 new_lock->l_glimpse_ast = ldlm_server_glimpse_ast;
4412 new_lock->l_remote_handle = lock->l_remote_handle;
4413 new_lock->l_flags &= ~LDLM_FL_LOCAL;
4415 unlock_res_and_lock(new_lock);
4417 cfs_hash_add(new_lock->l_export->exp_lock_hash,
4418 &new_lock->l_remote_handle,
4419 &new_lock->l_exp_hash);
4421 LDLM_LOCK_RELEASE(new_lock);
4422 lh->mlh_reg_lh.cookie = 0;
4424 RETURN(ELDLM_LOCK_REPLACED);
4427 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
4428 struct ldlm_lock *new_lock,
4429 struct mdt_lock_handle *lh, __u64 flags)
4431 struct ptlrpc_request *req = mdt_info_req(info);
4432 struct ldlm_request *dlmreq;
4434 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
4437 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
4439 /* Check if this is a resend case (MSG_RESENT is set on RPC) and a
4440 * lock was found by ldlm_handle_enqueue(); if so @lh must be
4442 if (flags & LDLM_FL_RESENT) {
4443 lh->mlh_reg_lh.cookie = new_lock->l_handle.h_cookie;
4444 lh->mlh_reg_mode = new_lock->l_granted_mode;
4446 LDLM_DEBUG(new_lock, "Restoring lock cookie");
4447 DEBUG_REQ(D_DLMTRACE, req, "restoring lock cookie %#llx",
4448 lh->mlh_reg_lh.cookie);
4453 * If the xid matches, then we know this is a resent request, and allow
4454 * it. (It's probably an OPEN, for which we don't send a lock.
4456 if (req_can_reconstruct(req, NULL) != 0)
4460 * This remote handle isn't enqueued, so we never received or processed
4461 * this request. Clear MSG_RESENT, because it can be handled like any
4462 * normal request now.
4464 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
4466 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle %#llx",
4467 dlmreq->lock_handle[0].cookie);
4470 static int mdt_intent_getxattr(enum ldlm_intent_flags it_opc,
4471 struct mdt_thread_info *info,
4472 struct ldlm_lock **lockp,
4475 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4476 struct ldlm_reply *ldlm_rep = NULL;
4481 * Initialize lhc->mlh_reg_lh either from a previously granted lock
4482 * (for the resend case) or a new lock. Below we will use it to
4483 * replace the original lock.
4485 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4486 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
4487 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
4488 rc = mdt_object_lock(info, info->mti_object, lhc,
4489 MDS_INODELOCK_XATTR);
4494 rc = mdt_getxattr(info);
4496 if (mdt_info_req(info)->rq_repmsg != NULL)
4497 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4499 if (ldlm_rep == NULL ||
4500 OBD_FAIL_CHECK(OBD_FAIL_MDS_XATTR_REP)) {
4501 mdt_object_unlock(info, info->mti_object, lhc, 1);
4505 RETURN(err_serious(-EFAULT));
4508 ldlm_rep->lock_policy_res2 = clear_serious(rc);
4510 /* This is left for interop instead of adding a new interop flag.
4512 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(3, 0, 0, 0)
4513 if (ldlm_rep->lock_policy_res2) {
4514 mdt_object_unlock(info, info->mti_object, lhc, 1);
4515 RETURN(ELDLM_LOCK_ABORTED);
4519 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4523 static int mdt_intent_getattr(enum ldlm_intent_flags it_opc,
4524 struct mdt_thread_info *info,
4525 struct ldlm_lock **lockp,
4528 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4530 struct ldlm_reply *ldlm_rep;
4531 struct mdt_body *reqbody;
4532 struct mdt_body *repbody;
4536 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
4539 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
4542 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
4543 repbody->mbo_eadatasize = 0;
4544 repbody->mbo_aclsize = 0;
4548 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
4551 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
4555 CERROR("%s: unsupported intent %#x\n",
4556 mdt_obd_name(info->mti_mdt), (unsigned int)it_opc);
4557 GOTO(out_shrink, rc = -EINVAL);
4560 rc = mdt_init_ucred(info, reqbody);
4562 GOTO(out_shrink, rc);
4564 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4565 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
4567 /* Get lock from request for possible resent case. */
4568 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4570 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
4571 ldlm_rep->lock_policy_res2 = clear_serious(rc);
4573 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
4574 ldlm_rep->lock_policy_res2 = 0;
4575 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
4576 ldlm_rep->lock_policy_res2) {
4577 lhc->mlh_reg_lh.cookie = 0ull;
4578 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
4581 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4584 mdt_exit_ucred(info);
4586 mdt_client_compatibility(info);
4587 rc2 = mdt_fix_reply(info);
4593 static int mdt_intent_layout(enum ldlm_intent_flags it_opc,
4594 struct mdt_thread_info *info,
4595 struct ldlm_lock **lockp,
4598 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4599 struct md_layout_change layout = { .mlc_opc = MD_LAYOUT_NOP };
4600 struct layout_intent *intent;
4601 struct ldlm_reply *ldlm_rep;
4602 struct lu_fid *fid = &info->mti_tmp_fid2;
4603 struct mdt_object *obj = NULL;
4604 int layout_size = 0;
4605 struct lu_buf *buf = &layout.mlc_buf;
4610 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
4612 intent = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
4616 CDEBUG(D_INFO, DFID "got layout change request from client: "
4617 "opc:%u flags:%#x extent "DEXT"\n",
4618 PFID(fid), intent->li_opc, intent->li_flags,
4619 PEXT(&intent->li_extent));
4621 switch (intent->li_opc) {
4622 case LAYOUT_INTENT_TRUNC:
4623 case LAYOUT_INTENT_WRITE:
4624 layout.mlc_opc = MD_LAYOUT_WRITE;
4625 layout.mlc_intent = intent;
4627 case LAYOUT_INTENT_ACCESS:
4629 case LAYOUT_INTENT_READ:
4630 case LAYOUT_INTENT_GLIMPSE:
4631 case LAYOUT_INTENT_RELEASE:
4632 case LAYOUT_INTENT_RESTORE:
4633 CERROR("%s: Unsupported layout intent opc %d\n",
4634 mdt_obd_name(info->mti_mdt), intent->li_opc);
4637 CERROR("%s: Unknown layout intent opc %d\n",
4638 mdt_obd_name(info->mti_mdt), intent->li_opc);
4642 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
4644 RETURN(PTR_ERR(obj));
4646 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
4647 /* if layout is going to be changed don't use the current EA
4648 * size but the maximum one. That buffer will be shrinked
4649 * to the actual size in req_capsule_shrink() before reply.
4651 if (layout.mlc_opc == MD_LAYOUT_WRITE) {
4652 layout_size = info->mti_mdt->mdt_max_mdsize;
4654 layout_size = mdt_attr_get_eabuf_size(info, obj);
4655 if (layout_size < 0)
4656 GOTO(out, rc = layout_size);
4658 if (layout_size > info->mti_mdt->mdt_max_mdsize)
4659 info->mti_mdt->mdt_max_mdsize = layout_size;
4661 CDEBUG(D_INFO, "%s: layout_size %d\n",
4662 mdt_obd_name(info->mti_mdt), layout_size);
4666 * set reply buffer size, so that ldlm_handle_enqueue0()->
4667 * ldlm_lvbo_fill() will fill the reply buffer with lovea.
4669 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
4671 rc = req_capsule_server_pack(info->mti_pill);
4675 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4677 GOTO(out, rc = -EPROTO);
4679 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
4681 /* take lock in ldlm_lock_enqueue() for LAYOUT_INTENT_ACCESS */
4682 if (layout.mlc_opc == MD_LAYOUT_NOP)
4685 rc = mdt_check_resent(info, mdt_reconstruct_generic, lhc);
4689 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
4690 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
4696 if (unlikely(req_is_replay(mdt_info_req(info)))) {
4697 buf->lb_buf = req_capsule_client_get(info->mti_pill,
4699 buf->lb_len = req_capsule_get_size(info->mti_pill,
4700 &RMF_EADATA, RCL_CLIENT);
4702 * If it's a replay of layout write intent RPC, the client has
4703 * saved the extended lovea when it get reply then.
4705 if (buf->lb_len > 0)
4706 mdt_fix_lov_magic(info, buf->lb_buf);
4709 /* Get lock from request for possible resent case. */
4710 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4711 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
4714 * Instantiate some layout components, if @buf contains lovea, then it's
4715 * a replay of the layout intent write RPC.
4717 rc = mdt_layout_change(info, obj, lhc, &layout);
4718 ldlm_rep->lock_policy_res2 = clear_serious(rc);
4720 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
4721 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4722 if (rc == ELDLM_LOCK_REPLACED &&
4723 (*lockp)->l_granted_mode == LCK_EX)
4724 ldlm_lock_mode_downgrade(*lockp, LCK_CR);
4729 mdt_object_put(info->mti_env, obj);
4733 static int mdt_intent_open(enum ldlm_intent_flags it_opc,
4734 struct mdt_thread_info *info,
4735 struct ldlm_lock **lockp,
4738 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4739 struct ldlm_reply *rep = NULL;
4742 struct ptlrpc_request *req = mdt_info_req(info);
4744 static const struct req_format *intent_fmts[REINT_MAX] = {
4745 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
4746 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
4751 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
4755 /* Get lock from request for possible resent case. */
4756 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4758 rc = mdt_reint_internal(info, lhc, opc);
4760 if (rc < 0 && lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
4761 DEBUG_REQ(D_ERROR, req, "Replay open failed with %d", rc);
4763 /* Check whether the reply has been packed successfully. */
4764 if (mdt_info_req(info)->rq_repmsg != NULL)
4765 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4770 RETURN(err_serious(-EFAULT));
4773 /* MDC expects this in any case */
4775 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
4777 /* the open lock or the lock for cross-ref object should be
4778 * returned to the client */
4779 if (lustre_handle_is_used(&lhc->mlh_reg_lh) &&
4780 (rc == 0 || rc == -MDT_EREMOTE_OPEN)) {
4781 rep->lock_policy_res2 = 0;
4782 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4786 rep->lock_policy_res2 = clear_serious(rc);
4788 if (rep->lock_policy_res2 == -ENOENT &&
4789 mdt_get_disposition(rep, DISP_LOOKUP_NEG) &&
4790 !mdt_get_disposition(rep, DISP_OPEN_CREATE))
4791 rep->lock_policy_res2 = 0;
4793 lhc->mlh_reg_lh.cookie = 0ull;
4794 if (rc == -ENOTCONN || rc == -ENODEV ||
4795 rc == -EOVERFLOW) { /**< if VBR failure then return error */
4797 * If it is the disconnect error (ENODEV & ENOCONN), the error
4798 * will be returned by rq_status, and client at ptlrpc layer
4799 * will detect this, then disconnect, reconnect the import
4800 * immediately, instead of impacting the following the rpc.
4805 * For other cases, the error will be returned by intent, and client
4806 * will retrieve the result from intent.
4808 RETURN(ELDLM_LOCK_ABORTED);
4811 static int mdt_intent_opc(enum ldlm_intent_flags it_opc,
4812 struct mdt_thread_info *info,
4813 struct ldlm_lock **lockp,
4814 u64 flags /* LDLM_FL_* */)
4816 struct req_capsule *pill = info->mti_pill;
4817 struct ptlrpc_request *req = mdt_info_req(info);
4818 const struct req_format *it_format;
4819 int (*it_handler)(enum ldlm_intent_flags,
4820 struct mdt_thread_info *,
4821 struct ldlm_lock **,
4823 enum tgt_handler_flags it_handler_flags = 0;
4824 struct ldlm_reply *rep;
4825 bool check_mdt_object = false;
4831 case IT_OPEN|IT_CREAT:
4833 * OCREAT is not a IS_MUTABLE request since the file may
4834 * already exist. We do the extra check of
4835 * OBD_CONNECT_RDONLY in mdt_reint_open() when we
4836 * really need to create the object.
4838 it_format = &RQF_LDLM_INTENT;
4839 it_handler = &mdt_intent_open;
4842 check_mdt_object = true;
4845 it_format = &RQF_LDLM_INTENT_GETATTR;
4846 it_handler = &mdt_intent_getattr;
4847 it_handler_flags = HAS_REPLY;
4850 check_mdt_object = true;
4851 it_format = &RQF_LDLM_INTENT_GETXATTR;
4852 it_handler = &mdt_intent_getxattr;
4853 it_handler_flags = HAS_BODY;
4856 it_format = &RQF_LDLM_INTENT_LAYOUT;
4857 it_handler = &mdt_intent_layout;
4860 it_format = &RQF_LDLM_INTENT;
4861 it_handler = &mdt_intent_glimpse;
4864 it_format = &RQF_LDLM_INTENT;
4865 it_handler = &mdt_intent_brw;
4867 case IT_QUOTA_DQACQ:
4868 case IT_QUOTA_CONN: {
4869 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
4872 RETURN(-EOPNOTSUPP);
4874 if (mdt_rdonly(req->rq_export))
4877 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
4878 /* pass the request to quota master */
4879 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
4880 mdt_info_req(info), lockp,
4885 CERROR("%s: unknown intent code %#x\n",
4886 mdt_obd_name(info->mti_mdt), it_opc);
4890 req_capsule_extend(pill, it_format);
4892 rc = mdt_unpack_req_pack_rep(info, it_handler_flags);
4896 if (unlikely(info->mti_object == NULL && check_mdt_object))
4899 if (it_handler_flags & IS_MUTABLE && mdt_rdonly(req->rq_export))
4902 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_INTENT_DELAY, 10);
4904 /* execute policy */
4905 rc = (*it_handler)(it_opc, info, lockp, flags);
4907 /* Check whether the reply has been packed successfully. */
4908 if (req->rq_repmsg != NULL) {
4909 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4910 rep->lock_policy_res2 =
4911 ptlrpc_status_hton(rep->lock_policy_res2);
4917 static void mdt_ptlrpc_stats_update(struct ptlrpc_request *req,
4918 enum ldlm_intent_flags it_opc)
4920 struct lprocfs_stats *srv_stats = ptlrpc_req2svc(req)->srv_stats;
4922 /* update stats when IT code is known */
4923 if (srv_stats != NULL)
4924 lprocfs_counter_incr(srv_stats,
4925 PTLRPC_LAST_CNTR + (it_opc == IT_GLIMPSE ?
4926 LDLM_GLIMPSE_ENQUEUE : LDLM_IBITS_ENQUEUE));
4929 static int mdt_intent_policy(const struct lu_env *env,
4930 struct ldlm_namespace *ns,
4931 struct ldlm_lock **lockp,
4933 enum ldlm_mode mode,
4934 __u64 flags, void *data)
4936 struct tgt_session_info *tsi;
4937 struct mdt_thread_info *info;
4938 struct ptlrpc_request *req = req_cookie;
4939 struct ldlm_intent *it;
4940 struct req_capsule *pill;
4941 const struct ldlm_lock_desc *ldesc;
4946 LASSERT(req != NULL);
4948 tsi = tgt_ses_info(env);
4950 info = tsi2mdt_info(tsi);
4951 LASSERT(info != NULL);
4952 pill = info->mti_pill;
4953 LASSERT(pill->rc_req == req);
4954 ldesc = &info->mti_dlm_req->lock_desc;
4956 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
4957 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
4958 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
4960 mdt_ptlrpc_stats_update(req, it->opc);
4961 rc = mdt_intent_opc(it->opc, info, lockp, flags);
4965 /* Lock without inodebits makes no sense and will oops
4966 * later in ldlm. Let's check it now to see if we have
4967 * ibits corrupted somewhere in mdt_intent_opc().
4968 * The case for client miss to set ibits has been
4969 * processed by others. */
4970 LASSERT(ergo(ldesc->l_resource.lr_type == LDLM_IBITS,
4971 ldesc->l_policy_data.l_inodebits.bits != 0));
4973 rc = err_serious(-EFAULT);
4975 } else if (ldesc->l_resource.lr_type == LDLM_IBITS &&
4976 ldesc->l_policy_data.l_inodebits.bits == MDS_INODELOCK_DOM) {
4977 struct ldlm_reply *rep;
4979 /* No intent was provided but INTENT flag is set along with
4980 * DOM bit, this is considered as GLIMPSE request.
4981 * This logic is common for MDT and OST glimpse
4983 mdt_ptlrpc_stats_update(req, IT_GLIMPSE);
4984 rc = mdt_glimpse_enqueue(info, ns, lockp, flags);
4985 /* Check whether the reply has been packed successfully. */
4986 if (req->rq_repmsg != NULL) {
4987 rep = req_capsule_server_get(info->mti_pill,
4989 rep->lock_policy_res2 =
4990 ptlrpc_status_hton(rep->lock_policy_res2);
4993 /* No intent was provided */
4994 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
4995 rc = req_capsule_server_pack(pill);
4997 rc = err_serious(rc);
4999 mdt_thread_info_fini(info);
5003 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
5005 struct seq_server_site *ss = mdt_seq_site(mdt);
5007 if (ss->ss_node_id == 0)
5010 if (ss->ss_client_seq != NULL) {
5011 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
5012 ss->ss_client_seq->lcs_exp = NULL;
5015 if (ss->ss_server_fld != NULL) {
5016 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
5017 ss->ss_server_fld->lsf_control_exp = NULL;
5021 static void mdt_seq_fini_cli(struct mdt_device *mdt)
5023 struct seq_server_site *ss = mdt_seq_site(mdt);
5028 if (ss->ss_server_seq != NULL)
5029 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
5032 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
5034 mdt_seq_fini_cli(mdt);
5035 mdt_deregister_seq_exp(mdt);
5037 return seq_site_fini(env, mdt_seq_site(mdt));
5041 * It will retrieve its FLDB entries from MDT0, and it only happens
5042 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
5043 * and it needs to refresh FLDB from the MDT0.
5045 static int mdt_register_lwp_callback(void *data)
5048 struct mdt_device *mdt = data;
5049 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
5053 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
5055 rc = lu_env_init(&env, LCT_MD_THREAD);
5057 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
5061 /* Allocate new sequence now to avoid creating local transaction
5062 * in the normal transaction process */
5063 rc = seq_server_check_and_alloc_super(&env,
5064 mdt_seq_site(mdt)->ss_server_seq);
5069 rc = fld_update_from_controller(&env, fld);
5071 CERROR("%s: cannot update controller: rc = %d\n",
5072 mdt_obd_name(mdt), rc);
5081 static int mdt_register_seq_exp(struct mdt_device *mdt)
5083 struct seq_server_site *ss = mdt_seq_site(mdt);
5084 char *lwp_name = NULL;
5087 if (ss->ss_node_id == 0)
5090 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
5091 if (lwp_name == NULL)
5092 GOTO(out_free, rc = -ENOMEM);
5094 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
5098 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
5103 rc = lustre_register_lwp_item(lwp_name,
5104 &ss->ss_server_fld->lsf_control_exp,
5105 mdt_register_lwp_callback, mdt);
5107 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
5108 ss->ss_client_seq->lcs_exp = NULL;
5112 if (lwp_name != NULL)
5113 OBD_FREE(lwp_name, MAX_OBD_NAME);
5119 * Init client sequence manager which is used by local MDS to talk to sequence
5120 * controller on remote node.
5122 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
5124 struct seq_server_site *ss = mdt_seq_site(mdt);
5128 /* check if this is adding the first MDC and controller is not yet
5130 OBD_ALLOC_PTR(ss->ss_client_seq);
5131 if (ss->ss_client_seq == NULL)
5134 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
5135 if (prefix == NULL) {
5136 OBD_FREE_PTR(ss->ss_client_seq);
5137 ss->ss_client_seq = NULL;
5141 /* Note: seq_client_fini will be called in seq_site_fini */
5142 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
5143 seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
5144 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
5146 OBD_FREE(prefix, MAX_OBD_NAME + 5);
5148 RETURN(seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq));
5151 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
5153 struct seq_server_site *ss;
5157 ss = mdt_seq_site(mdt);
5158 /* init sequence controller server(MDT0) */
5159 if (ss->ss_node_id == 0) {
5160 OBD_ALLOC_PTR(ss->ss_control_seq);
5161 if (ss->ss_control_seq == NULL)
5164 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
5165 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
5168 GOTO(out_seq_fini, rc);
5171 /* Init normal sequence server */
5172 OBD_ALLOC_PTR(ss->ss_server_seq);
5173 if (ss->ss_server_seq == NULL)
5174 GOTO(out_seq_fini, rc = -ENOMEM);
5176 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
5177 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
5179 GOTO(out_seq_fini, rc);
5181 /* init seq client for seq server to talk to seq controller(MDT0) */
5182 rc = mdt_seq_init_cli(env, mdt);
5184 GOTO(out_seq_fini, rc);
5186 if (ss->ss_node_id != 0)
5187 /* register controller export through lwp */
5188 rc = mdt_register_seq_exp(mdt);
5193 mdt_seq_fini(env, mdt);
5201 static int mdt_fld_fini(const struct lu_env *env,
5202 struct mdt_device *m)
5204 struct seq_server_site *ss = mdt_seq_site(m);
5207 if (ss && ss->ss_server_fld) {
5208 fld_server_fini(env, ss->ss_server_fld);
5209 OBD_FREE_PTR(ss->ss_server_fld);
5210 ss->ss_server_fld = NULL;
5216 static int mdt_fld_init(const struct lu_env *env,
5218 struct mdt_device *m)
5220 struct seq_server_site *ss;
5224 ss = mdt_seq_site(m);
5226 OBD_ALLOC_PTR(ss->ss_server_fld);
5227 if (ss->ss_server_fld == NULL)
5228 RETURN(rc = -ENOMEM);
5230 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
5233 OBD_FREE_PTR(ss->ss_server_fld);
5234 ss->ss_server_fld = NULL;
5241 static void mdt_stack_pre_fini(const struct lu_env *env,
5242 struct mdt_device *m, struct lu_device *top)
5244 struct lustre_cfg_bufs *bufs;
5245 struct lustre_cfg *lcfg;
5246 struct mdt_thread_info *info;
5251 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5252 LASSERT(info != NULL);
5254 bufs = &info->mti_u.bufs;
5256 LASSERT(m->mdt_child_exp);
5257 LASSERT(m->mdt_child_exp->exp_obd);
5259 /* process cleanup, pass mdt obd name to get obd umount flags */
5260 /* XXX: this is needed because all layers are referenced by
5261 * objects (some of them are pinned by osd, for example *
5262 * the proper solution should be a model where object used
5263 * by osd only doesn't have mdt/mdd slices -bzzz */
5264 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
5265 lustre_cfg_bufs_set_string(bufs, 1, NULL);
5266 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5269 lustre_cfg_init(lcfg, LCFG_PRE_CLEANUP, bufs);
5271 top->ld_ops->ldo_process_config(env, top, lcfg);
5272 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5276 static void mdt_stack_fini(const struct lu_env *env,
5277 struct mdt_device *m, struct lu_device *top)
5279 struct obd_device *obd = mdt2obd_dev(m);
5280 struct lustre_cfg_bufs *bufs;
5281 struct lustre_cfg *lcfg;
5282 struct mdt_thread_info *info;
5286 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5287 LASSERT(info != NULL);
5289 lu_dev_del_linkage(top->ld_site, top);
5291 lu_site_purge(env, top->ld_site, -1);
5293 bufs = &info->mti_u.bufs;
5294 /* process cleanup, pass mdt obd name to get obd umount flags */
5295 /* another purpose is to let all layers to release their objects */
5296 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
5301 lustre_cfg_bufs_set_string(bufs, 1, flags);
5302 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5305 lustre_cfg_init(lcfg, LCFG_CLEANUP, bufs);
5308 top->ld_ops->ldo_process_config(env, top, lcfg);
5309 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5311 lu_site_purge(env, top->ld_site, -1);
5313 m->mdt_child = NULL;
5314 m->mdt_bottom = NULL;
5316 obd_disconnect(m->mdt_child_exp);
5317 m->mdt_child_exp = NULL;
5319 obd_disconnect(m->mdt_bottom_exp);
5320 m->mdt_child_exp = NULL;
5323 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
5324 const char *next, struct obd_export **exp)
5326 struct obd_connect_data *data = NULL;
5327 struct obd_device *obd;
5331 OBD_ALLOC_PTR(data);
5333 GOTO(out, rc = -ENOMEM);
5335 obd = class_name2obd(next);
5337 CERROR("%s: can't locate next device: %s\n",
5338 mdt_obd_name(m), next);
5339 GOTO(out, rc = -ENOTCONN);
5342 data->ocd_connect_flags = OBD_CONNECT_VERSION;
5343 data->ocd_version = LUSTRE_VERSION_CODE;
5345 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
5347 CERROR("%s: cannot connect to next dev %s (%d)\n",
5348 mdt_obd_name(m), next, rc);
5358 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
5359 struct lustre_cfg *cfg)
5361 char *dev = lustre_cfg_string(cfg, 0);
5362 int rc, name_size, uuid_size;
5363 char *name, *uuid, *p;
5364 struct lustre_cfg_bufs *bufs;
5365 struct lustre_cfg *lcfg;
5366 struct obd_device *obd;
5367 struct lustre_profile *lprof;
5368 struct lu_site *site;
5371 /* in 1.8 we had the only device in the stack - MDS.
5372 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
5373 * in 2.3 OSD is instantiated by obd_mount.c, so we need
5374 * to generate names and setup MDT, MDD. MDT will be using
5375 * generated name to connect to MDD. for MDD the next device
5376 * will be LOD with name taken from so called "profile" which
5377 * is generated by mount_option line
5379 * 1.8 MGS generates config. commands like this:
5380 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
5381 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
5382 * 2.0 MGS generates config. commands like this:
5383 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
5384 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
5385 * 3:lustre-MDT0000-mdtlov 4:f
5387 * we generate MDD name from MDT one, just replacing T with D
5389 * after all the preparations, the logical equivalent will be
5390 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
5391 * 3:lustre-MDT0000-mdtlov 4:f
5392 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
5393 * 3:lustre-MDD0000 4:f
5395 * notice we build the stack from down to top: MDD first, then MDT */
5397 name_size = MAX_OBD_NAME;
5398 uuid_size = MAX_OBD_NAME;
5400 OBD_ALLOC(name, name_size);
5401 OBD_ALLOC(uuid, uuid_size);
5402 if (name == NULL || uuid == NULL)
5403 GOTO(cleanup_mem, rc = -ENOMEM);
5405 OBD_ALLOC_PTR(bufs);
5407 GOTO(cleanup_mem, rc = -ENOMEM);
5410 p = strstr(name, "-MDT");
5412 GOTO(free_bufs, rc = -ENOMEM);
5415 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
5417 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
5418 if (lprof == NULL || lprof->lp_dt == NULL) {
5419 CERROR("can't find the profile: %s\n",
5420 lustre_cfg_string(cfg, 0));
5421 GOTO(free_bufs, rc = -EINVAL);
5424 lustre_cfg_bufs_reset(bufs, name);
5425 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
5426 lustre_cfg_bufs_set_string(bufs, 2, uuid);
5427 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
5429 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5431 GOTO(put_profile, rc = -ENOMEM);
5432 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
5434 rc = class_attach(lcfg);
5436 GOTO(lcfg_cleanup, rc);
5438 obd = class_name2obd(name);
5440 CERROR("Can not find obd %s (%s in config)\n",
5441 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
5442 GOTO(lcfg_cleanup, rc = -EINVAL);
5445 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5447 lustre_cfg_bufs_reset(bufs, name);
5448 lustre_cfg_bufs_set_string(bufs, 1, uuid);
5449 lustre_cfg_bufs_set_string(bufs, 2, dev);
5450 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
5452 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5454 GOTO(class_detach, rc = -ENOMEM);
5455 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
5457 rc = class_setup(obd, lcfg);
5459 GOTO(class_detach, rc);
5461 /* connect to MDD we just setup */
5462 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
5464 GOTO(class_detach, rc);
5466 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
5468 LASSERT(mdt_lu_site(mdt) == NULL);
5469 mdt->mdt_lu_dev.ld_site = site;
5470 site->ls_top_dev = &mdt->mdt_lu_dev;
5471 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
5473 /* now connect to bottom OSD */
5474 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
5475 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
5477 GOTO(class_detach, rc);
5479 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
5481 rc = lu_env_refill((struct lu_env *)env);
5483 CERROR("Failure to refill session: '%d'\n", rc);
5485 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
5490 class_detach(obd, lcfg);
5492 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5494 class_put_profile(lprof);
5499 OBD_FREE(name, name_size);
5501 OBD_FREE(uuid, uuid_size);
5505 /* setup quota master target on MDT0 */
5506 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
5507 struct lustre_cfg *cfg)
5509 struct obd_device *obd;
5510 char *dev = lustre_cfg_string(cfg, 0);
5511 char *qmtname, *uuid, *p;
5512 struct lustre_cfg_bufs *bufs;
5513 struct lustre_cfg *lcfg;
5514 struct lustre_profile *lprof;
5515 struct obd_connect_data *data;
5519 LASSERT(mdt->mdt_qmt_exp == NULL);
5520 LASSERT(mdt->mdt_qmt_dev == NULL);
5522 /* quota master is on MDT0 only for now */
5523 if (mdt->mdt_seq_site.ss_node_id != 0)
5526 /* MGS generates config commands which look as follows:
5527 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
5528 * 3:lustre-MDT0000-mdtlov 4:f
5530 * We generate the QMT name from the MDT one, just replacing MD with QM
5531 * after all the preparations, the logical equivalent will be:
5532 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
5533 * 3:lustre-MDT0000-osd 4:f */
5534 OBD_ALLOC(qmtname, MAX_OBD_NAME);
5535 OBD_ALLOC(uuid, UUID_MAX);
5536 OBD_ALLOC_PTR(bufs);
5537 OBD_ALLOC_PTR(data);
5538 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
5539 GOTO(cleanup_mem, rc = -ENOMEM);
5541 strcpy(qmtname, dev);
5542 p = strstr(qmtname, "-MDT");
5544 GOTO(cleanup_mem, rc = -ENOMEM);
5545 /* replace MD with QM */
5549 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
5551 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
5552 if (lprof == NULL || lprof->lp_dt == NULL) {
5553 CERROR("can't find profile for %s\n",
5554 lustre_cfg_string(cfg, 0));
5555 GOTO(cleanup_mem, rc = -EINVAL);
5558 lustre_cfg_bufs_reset(bufs, qmtname);
5559 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
5560 lustre_cfg_bufs_set_string(bufs, 2, uuid);
5561 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
5563 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5565 GOTO(put_profile, rc = -ENOMEM);
5566 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
5568 rc = class_attach(lcfg);
5570 GOTO(lcfg_cleanup, rc);
5572 obd = class_name2obd(qmtname);
5574 CERROR("Can not find obd %s (%s in config)\n", qmtname,
5575 lustre_cfg_string(cfg, 0));
5576 GOTO(lcfg_cleanup, rc = -EINVAL);
5579 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5581 lustre_cfg_bufs_reset(bufs, qmtname);
5582 lustre_cfg_bufs_set_string(bufs, 1, uuid);
5583 lustre_cfg_bufs_set_string(bufs, 2, dev);
5585 /* for quota, the next device should be the OSD device */
5586 lustre_cfg_bufs_set_string(bufs, 3,
5587 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
5589 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5591 GOTO(class_detach, rc = -ENOMEM);
5592 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
5594 rc = class_setup(obd, lcfg);
5596 GOTO(class_detach, rc);
5598 mdt->mdt_qmt_dev = obd->obd_lu_dev;
5600 /* configure local quota objects */
5601 if (OBD_FAIL_CHECK(OBD_FAIL_QUOTA_INIT))
5604 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
5608 GOTO(class_cleanup, rc);
5610 /* connect to quota master target */
5611 data->ocd_connect_flags = OBD_CONNECT_VERSION;
5612 data->ocd_version = LUSTRE_VERSION_CODE;
5613 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
5616 CERROR("cannot connect to quota master device %s (%d)\n",
5618 GOTO(class_cleanup, rc);
5624 class_manual_cleanup(obd);
5625 mdt->mdt_qmt_dev = NULL;
5626 GOTO(lcfg_cleanup, rc);
5630 class_detach(obd, lcfg);
5632 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5634 class_put_profile(lprof);
5639 OBD_FREE(qmtname, MAX_OBD_NAME);
5641 OBD_FREE(uuid, UUID_MAX);
5647 /* Shutdown quota master target associated with mdt */
5648 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
5652 if (mdt->mdt_qmt_exp == NULL)
5654 LASSERT(mdt->mdt_qmt_dev != NULL);
5656 /* the qmt automatically shuts down when the mdt disconnects */
5657 obd_disconnect(mdt->mdt_qmt_exp);
5658 mdt->mdt_qmt_exp = NULL;
5659 mdt->mdt_qmt_dev = NULL;
5663 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
5664 * for now. This will be removed along with converting rest of MDT code
5665 * to use tgt_session_info */
5666 static int mdt_tgt_getxattr(struct tgt_session_info *tsi)
5668 struct mdt_thread_info *info = tsi2mdt_info(tsi);
5671 if (unlikely(info->mti_object == NULL))
5674 rc = mdt_getxattr(info);
5676 mdt_thread_info_fini(info);
5680 static int mdt_llog_open(struct tgt_session_info *tsi)
5684 if (!mdt_is_rootadmin(tsi2mdt_info(tsi)))
5685 RETURN(err_serious(-EACCES));
5687 RETURN(tgt_llog_open(tsi));
5690 #define OBD_FAIL_OST_READ_NET OBD_FAIL_OST_BRW_NET
5691 #define OBD_FAIL_OST_WRITE_NET OBD_FAIL_OST_BRW_NET
5692 #define OST_BRW_READ OST_READ
5693 #define OST_BRW_WRITE OST_WRITE
5695 static struct tgt_handler mdt_tgt_handlers[] = {
5696 TGT_RPC_HANDLER(MDS_FIRST_OPC,
5697 0, MDS_CONNECT, mdt_tgt_connect,
5698 &RQF_CONNECT, LUSTRE_OBD_VERSION),
5699 TGT_RPC_HANDLER(MDS_FIRST_OPC,
5700 0, MDS_DISCONNECT, tgt_disconnect,
5701 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
5702 TGT_RPC_HANDLER(MDS_FIRST_OPC,
5703 HAS_REPLY, MDS_SET_INFO, mdt_set_info,
5704 &RQF_MDT_SET_INFO, LUSTRE_MDS_VERSION),
5705 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
5706 TGT_MDT_HDL(HAS_REPLY, MDS_GET_ROOT, mdt_get_root),
5707 TGT_MDT_HDL(HAS_BODY, MDS_GETATTR, mdt_getattr),
5708 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_GETATTR_NAME,
5710 TGT_MDT_HDL(HAS_BODY, MDS_GETXATTR, mdt_tgt_getxattr),
5711 TGT_MDT_HDL(HAS_REPLY, MDS_STATFS, mdt_statfs),
5712 TGT_MDT_HDL(IS_MUTABLE, MDS_REINT, mdt_reint),
5713 TGT_MDT_HDL(HAS_BODY, MDS_CLOSE, mdt_close),
5714 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_READPAGE, mdt_readpage),
5715 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_SYNC, mdt_sync),
5716 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
5717 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_PROGRESS,
5719 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_CT_REGISTER,
5720 mdt_hsm_ct_register),
5721 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_CT_UNREGISTER,
5722 mdt_hsm_ct_unregister),
5723 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_STATE_GET,
5725 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_STATE_SET,
5727 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_ACTION, mdt_hsm_action),
5728 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_REQUEST,
5730 TGT_MDT_HDL(HAS_KEY | HAS_BODY | HAS_REPLY | IS_MUTABLE,
5733 TGT_MDT_HDL(IS_MUTABLE, MDS_RMFID, mdt_rmfid),
5736 static struct tgt_handler mdt_io_ops[] = {
5737 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY, OST_BRW_READ, tgt_brw_read,
5739 TGT_OST_HDL_HP(HAS_BODY | IS_MUTABLE, OST_BRW_WRITE, tgt_brw_write,
5741 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY | IS_MUTABLE,
5742 OST_PUNCH, mdt_punch_hdl,
5744 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_SYNC, mdt_data_sync),
5745 TGT_OST_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, OST_FALLOCATE,
5747 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_SEEK, tgt_lseek),
5748 TGT_RPC_HANDLER(OST_FIRST_OPC,
5749 0, OST_SET_INFO, mdt_io_set_info,
5750 &RQF_OBD_SET_INFO, LUSTRE_OST_VERSION),
5753 static struct tgt_handler mdt_sec_ctx_ops[] = {
5754 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
5755 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
5756 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
5759 static struct tgt_handler mdt_quota_ops[] = {
5760 TGT_QUOTA_HDL(HAS_REPLY, QUOTA_DQACQ, mdt_quota_dqacq),
5763 static struct tgt_handler mdt_llog_handlers[] = {
5764 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_CREATE, mdt_llog_open),
5765 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
5766 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
5767 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
5770 static struct tgt_opc_slice mdt_common_slice[] = {
5772 .tos_opc_start = MDS_FIRST_OPC,
5773 .tos_opc_end = MDS_LAST_OPC,
5774 .tos_hs = mdt_tgt_handlers
5777 .tos_opc_start = OBD_FIRST_OPC,
5778 .tos_opc_end = OBD_LAST_OPC,
5779 .tos_hs = tgt_obd_handlers
5782 .tos_opc_start = LDLM_FIRST_OPC,
5783 .tos_opc_end = LDLM_LAST_OPC,
5784 .tos_hs = tgt_dlm_handlers
5787 .tos_opc_start = SEC_FIRST_OPC,
5788 .tos_opc_end = SEC_LAST_OPC,
5789 .tos_hs = mdt_sec_ctx_ops
5792 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
5793 .tos_opc_end = OUT_UPDATE_LAST_OPC,
5794 .tos_hs = tgt_out_handlers
5797 .tos_opc_start = FLD_FIRST_OPC,
5798 .tos_opc_end = FLD_LAST_OPC,
5799 .tos_hs = fld_handlers
5802 .tos_opc_start = SEQ_FIRST_OPC,
5803 .tos_opc_end = SEQ_LAST_OPC,
5804 .tos_hs = seq_handlers
5807 .tos_opc_start = QUOTA_DQACQ,
5808 .tos_opc_end = QUOTA_LAST_OPC,
5809 .tos_hs = mdt_quota_ops
5812 .tos_opc_start = LLOG_FIRST_OPC,
5813 .tos_opc_end = LLOG_LAST_OPC,
5814 .tos_hs = mdt_llog_handlers
5817 .tos_opc_start = LFSCK_FIRST_OPC,
5818 .tos_opc_end = LFSCK_LAST_OPC,
5819 .tos_hs = tgt_lfsck_handlers
5822 .tos_opc_start = OST_FIRST_OPC,
5823 .tos_opc_end = OST_LAST_OPC,
5824 .tos_hs = mdt_io_ops
5831 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
5833 struct md_device *next = m->mdt_child;
5834 struct lu_device *d = &m->mdt_lu_dev;
5835 struct obd_device *obd = mdt2obd_dev(m);
5836 struct lfsck_stop stop;
5839 stop.ls_status = LS_PAUSED;
5841 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
5843 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
5845 mdt_restriper_stop(m);
5846 ping_evictor_stop();
5848 /* Remove the HSM /proc entry so the coordinator cannot be
5849 * restarted by a user while it's shutting down.
5851 mdt_hsm_cdt_stop(m);
5853 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
5854 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
5856 if (m->mdt_namespace != NULL)
5857 ldlm_namespace_free_prior(m->mdt_namespace, NULL,
5858 d->ld_obd->obd_force);
5860 obd_exports_barrier(obd);
5861 obd_zombie_barrier();
5863 mdt_quota_fini(env, m);
5865 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
5867 /* Calling the cleanup functions in the same order as in the mdt_init0
5870 mdt_tunables_fini(m);
5872 target_recovery_fini(obd);
5873 upcall_cache_cleanup(m->mdt_identity_cache);
5874 m->mdt_identity_cache = NULL;
5876 mdt_fs_cleanup(env, m);
5878 tgt_fini(env, &m->mdt_lut);
5880 mdt_hsm_cdt_fini(m);
5882 if (m->mdt_los != NULL) {
5883 local_oid_storage_fini(env, m->mdt_los);
5887 if (m->mdt_namespace != NULL) {
5888 ldlm_namespace_free_post(m->mdt_namespace);
5889 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
5892 if (m->mdt_md_root != NULL) {
5893 mdt_object_put(env, m->mdt_md_root);
5894 m->mdt_md_root = NULL;
5897 mdt_seq_fini(env, m);
5899 mdt_fld_fini(env, m);
5904 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5906 LASSERT(atomic_read(&d->ld_ref) == 0);
5908 server_put_mount(mdt_obd_name(m), true);
5913 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
5915 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
5916 struct lu_device_type *ldt, struct lustre_cfg *cfg)
5918 const struct dt_device_param *dt_conf;
5919 struct mdt_thread_info *info;
5920 struct obd_device *obd;
5921 const char *dev = lustre_cfg_string(cfg, 0);
5922 const char *num = lustre_cfg_string(cfg, 2);
5923 struct tg_grants_data *tgd = &m->mdt_lut.lut_tgd;
5924 struct lustre_mount_info *lmi = NULL;
5925 struct lustre_sb_info *lsi;
5927 struct seq_server_site *ss_site;
5928 const char *identity_upcall = "NONE";
5929 struct md_device *next;
5936 lu_device_init(&m->mdt_lu_dev, ldt);
5938 * Environment (env) might be missing mdt_thread_key values at that
5939 * point, if device is allocated when mdt_thread_key is in QUIESCENT
5942 * Usually device allocation path doesn't use module key values, but
5943 * mdt has to do a lot of work here, so allocate key value.
5945 rc = lu_env_refill((struct lu_env *)env);
5949 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5950 LASSERT(info != NULL);
5952 obd = class_name2obd(dev);
5953 LASSERT(obd != NULL);
5955 m->mdt_max_mdsize = MAX_MD_SIZE_OLD;
5956 m->mdt_opts.mo_evict_tgt_nids = 1;
5957 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
5959 lmi = server_get_mount(dev);
5961 CERROR("Cannot get mount info for %s!\n", dev);
5964 lsi = s2lsi(lmi->lmi_sb);
5965 LASSERT(lsi->lsi_lmd);
5966 /* CMD is supported only in IAM mode */
5968 rc = kstrtol(num, 10, &node_id);
5972 obd->u.obt.obt_magic = OBT_MAGIC;
5973 if (lsi->lsi_lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
5974 m->mdt_skip_lfsck = 1;
5977 /* Just try to get a DoM lock by default. Otherwise, having a group
5978 * lock granted, it may get blocked for a long time. */
5979 m->mdt_opts.mo_dom_lock = TRYLOCK_DOM_ON_OPEN;
5980 /* DoM files are read at open and data is packed in the reply */
5981 m->mdt_opts.mo_dom_read_open = 1;
5983 m->mdt_squash.rsi_uid = 0;
5984 m->mdt_squash.rsi_gid = 0;
5985 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
5986 spin_lock_init(&m->mdt_squash.rsi_lock);
5987 spin_lock_init(&m->mdt_lock);
5988 m->mdt_enable_remote_dir = 1;
5989 m->mdt_enable_striped_dir = 1;
5990 m->mdt_enable_dir_migration = 1;
5991 m->mdt_enable_dir_restripe = 0;
5992 m->mdt_enable_dir_auto_split = 0;
5993 m->mdt_enable_remote_dir_gid = 0;
5994 m->mdt_enable_chprojid_gid = 0;
5995 m->mdt_enable_remote_rename = 1;
5996 m->mdt_dir_restripe_nsonly = 1;
5997 m->mdt_enable_remote_subdir_mount = 1;
5999 atomic_set(&m->mdt_mds_mds_conns, 0);
6000 atomic_set(&m->mdt_async_commit_count, 0);
6002 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
6003 m->mdt_lu_dev.ld_obd = obd;
6004 /* Set this lu_device to obd for error handling purposes. */
6005 obd->obd_lu_dev = &m->mdt_lu_dev;
6007 /* init the stack */
6008 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
6010 CERROR("%s: Can't init device stack, rc %d\n",
6011 mdt_obd_name(m), rc);
6016 ss_site = mdt_seq_site(m);
6017 s->ld_seq_site = ss_site;
6020 /* set server index */
6021 ss_site->ss_node_id = node_id;
6023 /* failover is the default
6024 * FIXME: we do not failout mds0/mgs, which may cause some problems.
6025 * assumed whose ss_node_id == 0 XXX
6027 obd->obd_replayable = 1;
6028 /* No connection accepted until configurations will finish */
6029 obd->obd_no_conn = 1;
6031 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
6032 char *str = lustre_cfg_string(cfg, 4);
6033 if (strchr(str, 'n')) {
6034 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
6035 obd->obd_replayable = 0;
6039 rc = mdt_fld_init(env, mdt_obd_name(m), m);
6041 GOTO(err_fini_stack, rc);
6043 rc = mdt_seq_init(env, m);
6045 GOTO(err_fini_fld, rc);
6047 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
6048 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
6049 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
6050 LDLM_NAMESPACE_SERVER,
6051 LDLM_NAMESPACE_GREEDY,
6053 if (IS_ERR(m->mdt_namespace)) {
6054 rc = PTR_ERR(m->mdt_namespace);
6055 CERROR("%s: unable to create server namespace: rc = %d\n",
6057 m->mdt_namespace = NULL;
6058 GOTO(err_fini_seq, rc);
6061 m->mdt_namespace->ns_lvbp = m;
6062 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
6064 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
6065 /* set obd_namespace for compatibility with old code */
6066 obd->obd_namespace = m->mdt_namespace;
6068 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
6069 OBD_FAIL_MDS_ALL_REQUEST_NET,
6070 OBD_FAIL_MDS_ALL_REPLY_NET);
6072 GOTO(err_free_ns, rc);
6074 /* Amount of available space excluded from granting and reserved
6075 * for metadata. It is a percentage of the total MDT size. */
6076 tgd->tgd_reserved_pcnt = 10;
6078 if (ONE_MB_BRW_SIZE < (1U << tgd->tgd_blockbits))
6079 m->mdt_brw_size = 1U << tgd->tgd_blockbits;
6081 m->mdt_brw_size = ONE_MB_BRW_SIZE;
6083 rc = mdt_fs_setup(env, m, obd, lsi);
6087 fid.f_seq = FID_SEQ_LOCAL_NAME;
6090 rc = local_oid_storage_init(env, m->mdt_bottom, &fid, &m->mdt_los);
6092 GOTO(err_fs_cleanup, rc);
6094 rc = mdt_hsm_cdt_init(m);
6096 CERROR("%s: error initializing coordinator, rc %d\n",
6097 mdt_obd_name(m), rc);
6098 GOTO(err_los_fini, rc);
6101 tgt_adapt_sptlrpc_conf(&m->mdt_lut);
6103 next = m->mdt_child;
6104 dt_conf = next->md_ops->mdo_dtconf_get(env, next);
6106 mntopts = dt_conf->ddp_mntopts;
6108 if (mntopts & MNTOPT_USERXATTR)
6109 m->mdt_opts.mo_user_xattr = 1;
6111 m->mdt_opts.mo_user_xattr = 0;
6113 m->mdt_max_ea_size = dt_conf->ddp_max_ea_size;
6115 if (mntopts & MNTOPT_ACL)
6116 m->mdt_opts.mo_acl = 1;
6118 m->mdt_opts.mo_acl = 0;
6120 m->mdt_opts.mo_enable_strict_som = 1;
6122 /* XXX: to support suppgid for ACL, we enable identity_upcall
6123 * by default, otherwise, maybe got unexpected -EACCESS. */
6124 if (m->mdt_opts.mo_acl)
6125 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
6127 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
6129 &mdt_identity_upcall_cache_ops);
6130 if (IS_ERR(m->mdt_identity_cache)) {
6131 rc = PTR_ERR(m->mdt_identity_cache);
6132 m->mdt_identity_cache = NULL;
6133 GOTO(err_free_hsm, rc);
6136 rc = mdt_tunables_init(m, dev);
6138 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
6139 GOTO(err_recovery, rc);
6142 rc = mdt_quota_init(env, m, cfg);
6144 GOTO(err_procfs, rc);
6146 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
6147 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
6148 "mdt_ldlm_client", m->mdt_ldlm_client);
6150 ping_evictor_start();
6152 /* recovery will be started upon mdt_prepare()
6153 * when the whole stack is complete and ready
6154 * to serve the requests */
6156 /* Reduce the initial timeout on an MDS because it doesn't need such
6157 * a long timeout as an OST does. Adaptive timeouts will adjust this
6158 * value appropriately. */
6159 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
6160 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
6162 if ((lsi->lsi_lmd->lmd_flags & LMD_FLG_LOCAL_RECOV))
6163 m->mdt_lut.lut_local_recovery = 1;
6165 rc = mdt_restriper_start(m);
6167 GOTO(err_ping_evictor, rc);
6172 ping_evictor_stop();
6174 mdt_tunables_fini(m);
6176 upcall_cache_cleanup(m->mdt_identity_cache);
6177 m->mdt_identity_cache = NULL;
6179 mdt_hsm_cdt_fini(m);
6181 local_oid_storage_fini(env, m->mdt_los);
6184 mdt_fs_cleanup(env, m);
6186 /* keep recoverable clients */
6188 target_recovery_fini(obd);
6189 obd_exports_barrier(obd);
6190 obd_zombie_barrier();
6191 tgt_fini(env, &m->mdt_lut);
6193 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
6194 obd->obd_namespace = m->mdt_namespace = NULL;
6196 mdt_seq_fini(env, m);
6198 mdt_fld_fini(env, m);
6200 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
6203 server_put_mount(dev, true);
6207 /* For interoperability, the left element is old parameter, the right one
6208 * is the new version of the parameter, if some parameter is deprecated,
6209 * the new version should be set as NULL. */
6210 static struct cfg_interop_param mdt_interop_param[] = {
6211 { "mdt.group_upcall", NULL },
6212 { "mdt.quota_type", NULL },
6213 { "mdd.quota_type", NULL },
6214 { "mdt.som", NULL },
6215 { "mdt.rootsquash", "mdt.root_squash" },
6216 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
6220 /* used by MGS to process specific configurations */
6221 static int mdt_process_config(const struct lu_env *env,
6222 struct lu_device *d, struct lustre_cfg *cfg)
6224 struct mdt_device *m = mdt_dev(d);
6225 struct md_device *md_next = m->mdt_child;
6226 struct lu_device *next = md2lu_dev(md_next);
6230 switch (cfg->lcfg_command) {
6232 struct obd_device *obd = d->ld_obd;
6233 /* For interoperability */
6234 struct cfg_interop_param *ptr = NULL;
6235 struct lustre_cfg *old_cfg = NULL;
6239 param = lustre_cfg_string(cfg, 1);
6240 if (param == NULL) {
6241 CERROR("param is empty\n");
6246 ptr = class_find_old_param(param, mdt_interop_param);
6248 if (ptr->new_param == NULL) {
6250 CWARN("For interoperability, skip this %s."
6251 " It is obsolete.\n", ptr->old_param);
6255 CWARN("Found old param %s, changed it to %s.\n",
6256 ptr->old_param, ptr->new_param);
6259 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
6266 count = class_modify_config(cfg, PARAM_MDT,
6267 &obd->obd_kset.kobj);
6269 struct coordinator *cdt = &m->mdt_coordinator;
6271 /* is it an HSM var ? */
6272 count = class_modify_config(cfg, PARAM_HSM,
6273 &cdt->cdt_hsm_kobj);
6275 /* we don't understand; pass it on */
6276 rc = next->ld_ops->ldo_process_config(env, next,
6279 rc = count > 0 ? 0 : count;
6281 rc = count > 0 ? 0 : count;
6285 OBD_FREE(cfg, lustre_cfg_len(cfg->lcfg_bufcount,
6286 cfg->lcfg_buflens));
6290 /* others are passed further */
6291 rc = next->ld_ops->ldo_process_config(env, next, cfg);
6297 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
6298 const struct lu_object_header *hdr,
6299 struct lu_device *d)
6301 struct mdt_object *mo;
6305 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
6307 struct lu_object *o;
6308 struct lu_object_header *h;
6311 h = &mo->mot_header;
6312 lu_object_header_init(h);
6313 lu_object_init(o, h, d);
6314 lu_object_add_top(h, o);
6315 o->lo_ops = &mdt_obj_ops;
6316 spin_lock_init(&mo->mot_write_lock);
6317 mutex_init(&mo->mot_som_mutex);
6318 mutex_init(&mo->mot_lov_mutex);
6319 init_rwsem(&mo->mot_dom_sem);
6320 init_rwsem(&mo->mot_open_sem);
6321 atomic_set(&mo->mot_open_count, 0);
6322 mo->mot_restripe_offset = 0;
6323 INIT_LIST_HEAD(&mo->mot_restripe_linkage);
6324 mo->mot_lsom_size = 0;
6325 mo->mot_lsom_blocks = 0;
6326 mo->mot_lsom_inited = false;
6332 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
6333 const struct lu_object_conf *unused)
6335 struct mdt_device *d = mdt_dev(o->lo_dev);
6336 struct lu_device *under;
6337 struct lu_object *below;
6341 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
6342 PFID(lu_object_fid(o)));
6344 under = &d->mdt_child->md_lu_dev;
6345 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
6346 if (below != NULL) {
6347 lu_object_add(o, below);
6354 static void mdt_object_free_rcu(struct rcu_head *head)
6356 struct mdt_object *mo = container_of(head, struct mdt_object,
6357 mot_header.loh_rcu);
6359 kmem_cache_free(mdt_object_kmem, mo);
6362 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
6364 struct mdt_object *mo = mdt_obj(o);
6365 struct lu_object_header *h;
6369 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
6370 PFID(lu_object_fid(o)));
6372 LASSERT(atomic_read(&mo->mot_open_count) == 0);
6373 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
6376 lu_object_header_fini(h);
6377 OBD_FREE_PRE(mo, sizeof(*mo), "slab-freed");
6378 call_rcu(&mo->mot_header.loh_rcu, mdt_object_free_rcu);
6383 static int mdt_object_print(const struct lu_env *env, void *cookie,
6384 lu_printer_t p, const struct lu_object *o)
6386 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
6388 return (*p)(env, cookie,
6389 LUSTRE_MDT_NAME"-object@%p(%s %s, writecount=%d)",
6390 mdto, mdto->mot_lov_created ? "lov_created" : "",
6391 mdto->mot_cache_attr ? "cache_attr" : "",
6392 mdto->mot_write_count);
6395 static int mdt_prepare(const struct lu_env *env,
6396 struct lu_device *pdev,
6397 struct lu_device *cdev)
6399 struct mdt_device *mdt = mdt_dev(cdev);
6400 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
6401 struct obd_device *obd = cdev->ld_obd;
6408 rc = next->ld_ops->ldo_prepare(env, cdev, next);
6412 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
6416 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
6420 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
6421 /* The LFSCK instance is registered just now, so it must be there when
6422 * register the namespace to such instance. */
6423 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
6425 if (mdt->mdt_seq_site.ss_node_id == 0) {
6426 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
6427 &mdt->mdt_md_root_fid);
6432 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
6434 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
6435 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
6436 LASSERT(obd->obd_no_conn);
6437 spin_lock(&obd->obd_dev_lock);
6438 obd->obd_no_conn = 0;
6439 spin_unlock(&obd->obd_dev_lock);
6441 if (obd->obd_recovering == 0)
6442 mdt_postrecov(env, mdt);
6447 const struct lu_device_operations mdt_lu_ops = {
6448 .ldo_object_alloc = mdt_object_alloc,
6449 .ldo_process_config = mdt_process_config,
6450 .ldo_prepare = mdt_prepare,
6453 static const struct lu_object_operations mdt_obj_ops = {
6454 .loo_object_init = mdt_object_init,
6455 .loo_object_free = mdt_object_free,
6456 .loo_object_print = mdt_object_print
6459 static int mdt_obd_set_info_async(const struct lu_env *env,
6460 struct obd_export *exp,
6461 __u32 keylen, void *key,
6462 __u32 vallen, void *val,
6463 struct ptlrpc_request_set *set)
6469 if (KEY_IS(KEY_SPTLRPC_CONF)) {
6470 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp));
6477 static inline void mdt_enable_slc(struct mdt_device *mdt)
6479 if (mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_NEVER)
6480 mdt->mdt_lut.lut_sync_lock_cancel = SYNC_LOCK_CANCEL_BLOCKING;
6483 static inline void mdt_disable_slc(struct mdt_device *mdt)
6485 if (mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_BLOCKING)
6486 mdt->mdt_lut.lut_sync_lock_cancel = SYNC_LOCK_CANCEL_NEVER;
6490 * Match client and server connection feature flags.
6492 * Compute the compatibility flags for a connection request based on
6493 * features mutually supported by client and server.
6495 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
6496 * must not be updated here, otherwise a partially initialized value may
6497 * be exposed. After the connection request is successfully processed,
6498 * the top-level MDT connect request handler atomically updates the export
6499 * connect flags from the obd_connect_data::ocd_connect_flags field of the
6500 * reply. \see mdt_connect().
6502 * Before 2.7.50 clients will send a struct obd_connect_data_v1 rather than a
6503 * full struct obd_connect_data. So care must be taken when accessing fields
6504 * that are not present in struct obd_connect_data_v1. See LU-16.
6506 * \param exp the obd_export associated with this client/target pair
6507 * \param mdt the target device for the connection
6508 * \param data stores data for this connect request
6511 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
6512 * \retval -EBADE client and server feature requirements are incompatible
6514 static int mdt_connect_internal(const struct lu_env *env,
6515 struct obd_export *exp,
6516 struct mdt_device *mdt,
6517 struct obd_connect_data *data, bool reconnect)
6519 const char *obd_name = mdt_obd_name(mdt);
6520 LASSERT(data != NULL);
6522 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
6524 if (mdt->mdt_bottom->dd_rdonly &&
6525 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
6526 !(data->ocd_connect_flags & OBD_CONNECT_RDONLY))
6529 if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
6530 data->ocd_connect_flags2 &= MDT_CONNECT_SUPPORTED2;
6532 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
6534 if (!mdt->mdt_opts.mo_acl)
6535 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
6537 if (!mdt->mdt_opts.mo_user_xattr)
6538 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
6540 if (OCD_HAS_FLAG(data, BRW_SIZE)) {
6541 data->ocd_brw_size = min(data->ocd_brw_size,
6543 if (data->ocd_brw_size == 0) {
6544 CERROR("%s: cli %s/%p ocd_connect_flags: %#llx "
6545 "ocd_version: %x ocd_grant: %d ocd_index: %u "
6546 "ocd_brw_size unexpectedly zero, network data "
6547 "corruption? Refusing to connect this client\n",
6548 obd_name, exp->exp_client_uuid.uuid,
6549 exp, data->ocd_connect_flags, data->ocd_version,
6550 data->ocd_grant, data->ocd_index);
6555 if (OCD_HAS_FLAG(data, GRANT_PARAM)) {
6556 struct dt_device_param *ddp = &mdt->mdt_lut.lut_dt_conf;
6558 /* client is reporting its page size, for future use */
6559 exp->exp_target_data.ted_pagebits = data->ocd_grant_blkbits;
6560 data->ocd_grant_blkbits = mdt->mdt_lut.lut_tgd.tgd_blockbits;
6561 /* ddp_inodespace may not be power-of-two value, eg. for ldiskfs
6562 * it's LDISKFS_DIR_REC_LEN(20) = 28. */
6563 data->ocd_grant_inobits = fls(ddp->ddp_inodespace - 1);
6564 /* ocd_grant_tax_kb is in 1K byte blocks */
6565 data->ocd_grant_tax_kb = ddp->ddp_extent_tax >> 10;
6566 data->ocd_grant_max_blks = ddp->ddp_max_extent_blks;
6569 /* Save connect_data we have so far because tgt_grant_connect()
6570 * uses it to calculate grant, and we want to save the client
6571 * version before it is overwritten by LUSTRE_VERSION_CODE. */
6572 exp->exp_connect_data = *data;
6573 if (OCD_HAS_FLAG(data, GRANT))
6574 tgt_grant_connect(env, exp, data, !reconnect);
6576 if (OCD_HAS_FLAG(data, MAXBYTES))
6577 data->ocd_maxbytes = mdt->mdt_lut.lut_dt_conf.ddp_maxbytes;
6579 /* NB: Disregard the rule against updating
6580 * exp_connect_data.ocd_connect_flags in this case, since
6581 * tgt_client_new() needs to know if this is a lightweight
6582 * connection, and it is safe to expose this flag before
6583 * connection processing completes. */
6584 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
6585 spin_lock(&exp->exp_lock);
6586 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
6587 spin_unlock(&exp->exp_lock);
6590 data->ocd_version = LUSTRE_VERSION_CODE;
6592 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
6593 CWARN("%s: MDS requires FID support, but client not\n",
6598 if (OCD_HAS_FLAG(data, PINGLESS)) {
6599 if (ptlrpc_pinger_suppress_pings()) {
6600 spin_lock(&exp->exp_obd->obd_dev_lock);
6601 list_del_init(&exp->exp_obd_chain_timed);
6602 spin_unlock(&exp->exp_obd->obd_dev_lock);
6604 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
6608 data->ocd_max_easize = mdt->mdt_max_ea_size;
6610 /* NB: Disregard the rule against updating
6611 * exp_connect_data.ocd_connect_flags in this case, since
6612 * tgt_client_new() needs to know if this is client supports
6613 * multiple modify RPCs, and it is safe to expose this flag before
6614 * connection processing completes. */
6615 if (data->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS) {
6616 data->ocd_maxmodrpcs = max_mod_rpcs_per_client;
6617 spin_lock(&exp->exp_lock);
6618 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_MULTIMODRPCS;
6619 spin_unlock(&exp->exp_lock);
6622 if (OCD_HAS_FLAG(data, CKSUM)) {
6623 __u32 cksum_types = data->ocd_cksum_types;
6625 tgt_mask_cksum_types(&mdt->mdt_lut, &data->ocd_cksum_types);
6627 if (unlikely(data->ocd_cksum_types == 0)) {
6628 CERROR("%s: Connect with checksum support but no "
6629 "ocd_cksum_types is set\n",
6630 exp->exp_obd->obd_name);
6634 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
6635 "%x\n", exp->exp_obd->obd_name, obd_export_nid2str(exp),
6636 cksum_types, data->ocd_cksum_types);
6638 /* This client does not support OBD_CONNECT_CKSUM
6639 * fall back to CRC32 */
6640 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
6641 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
6642 exp->exp_obd->obd_name, obd_export_nid2str(exp));
6645 if ((data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
6646 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
6647 atomic_inc(&mdt->mdt_mds_mds_conns);
6648 mdt_enable_slc(mdt);
6651 if (!mdt->mdt_lut.lut_dt_conf.ddp_has_lseek_data_hole)
6652 data->ocd_connect_flags2 &= ~OBD_CONNECT2_LSEEK;
6657 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
6658 struct mdt_thread_info *info,
6659 struct mdt_file_data *mfd)
6661 struct lu_context ses;
6665 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
6670 lu_context_enter(&ses);
6672 mdt_ucred(info)->uc_valid = UCRED_OLD;
6673 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
6675 lu_context_exit(&ses);
6676 lu_context_fini(&ses);
6682 static int mdt_export_cleanup(struct obd_export *exp)
6684 LIST_HEAD(closing_list);
6685 struct mdt_export_data *med = &exp->exp_mdt_data;
6686 struct obd_device *obd = exp->exp_obd;
6687 struct mdt_device *mdt;
6688 struct mdt_thread_info *info;
6690 struct mdt_file_data *mfd, *n;
6694 spin_lock(&med->med_open_lock);
6695 while (!list_empty(&med->med_open_head)) {
6696 struct list_head *tmp = med->med_open_head.next;
6697 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
6699 /* Remove mfd handle so it can't be found again.
6700 * We are consuming the mfd_list reference here. */
6701 class_handle_unhash(&mfd->mfd_open_handle);
6702 list_move_tail(&mfd->mfd_list, &closing_list);
6704 spin_unlock(&med->med_open_lock);
6705 mdt = mdt_dev(obd->obd_lu_dev);
6706 LASSERT(mdt != NULL);
6708 rc = lu_env_init(&env, LCT_MD_THREAD);
6712 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6713 LASSERT(info != NULL);
6714 memset(info, 0, sizeof *info);
6715 info->mti_env = &env;
6716 info->mti_mdt = mdt;
6717 info->mti_exp = exp;
6719 if (!list_empty(&closing_list)) {
6720 struct md_attr *ma = &info->mti_attr;
6722 /* Close any open files (which may also cause orphan
6724 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
6725 list_del_init(&mfd->mfd_list);
6726 ma->ma_need = ma->ma_valid = 0;
6728 /* This file is being closed due to an eviction, it
6729 * could have been modified and now dirty regarding to
6730 * HSM archive, check this!
6731 * The logic here is to mark a file dirty if there's a
6732 * chance it was dirtied before the client was evicted,
6733 * so that we don't have to wait for a release attempt
6734 * before finding out the file was actually dirty and
6735 * fail the release. Aggressively marking it dirty here
6736 * will cause the policy engine to attempt to
6737 * re-archive it; when rearchiving, we can compare the
6738 * current version to the HSM data_version and make the
6739 * archive request into a noop if it's not actually
6742 if (mfd->mfd_open_flags & MDS_FMODE_WRITE)
6743 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
6745 /* Don't unlink orphan on failover umount, LU-184 */
6746 if (exp->exp_flags & OBD_OPT_FAILOVER ||
6747 exp->exp_obd->obd_stopping) {
6748 ma->ma_valid = MA_FLAGS;
6749 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
6751 ma->ma_valid |= MA_FORCE_LOG;
6752 mdt_mfd_close(info, mfd);
6755 info->mti_mdt = NULL;
6756 /* cleanup client slot early */
6757 /* Do not erase record for recoverable client. */
6758 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
6759 tgt_client_del(&env, exp);
6765 static int mdt_obd_disconnect(struct obd_export *exp)
6772 class_export_get(exp);
6774 if (!(exp->exp_flags & OBD_OPT_FORCE))
6775 tgt_grant_sanity_check(exp->exp_obd, __func__);
6777 if ((exp_connect_flags(exp) & OBD_CONNECT_MDS_MDS) &&
6778 !(exp_connect_flags(exp) & OBD_CONNECT_LIGHTWEIGHT)) {
6779 struct mdt_device *mdt = mdt_dev(exp->exp_obd->obd_lu_dev);
6781 if (atomic_dec_and_test(&mdt->mdt_mds_mds_conns))
6782 mdt_disable_slc(mdt);
6785 rc = server_disconnect_export(exp);
6787 CDEBUG(D_IOCTL, "server disconnect error: rc = %d\n", rc);
6789 tgt_grant_discard(exp);
6791 rc = mdt_export_cleanup(exp);
6792 nodemap_del_member(exp);
6793 class_export_put(exp);
6797 /* mds_connect copy */
6798 static int mdt_obd_connect(const struct lu_env *env,
6799 struct obd_export **exp, struct obd_device *obd,
6800 struct obd_uuid *cluuid,
6801 struct obd_connect_data *data,
6804 struct obd_export *lexp;
6805 struct lustre_handle conn = { 0 };
6806 struct mdt_device *mdt;
6808 lnet_nid_t *client_nid = localdata;
6811 LASSERT(env != NULL);
6812 LASSERT(data != NULL);
6814 if (!exp || !obd || !cluuid)
6817 mdt = mdt_dev(obd->obd_lu_dev);
6820 * first, check whether the stack is ready to handle requests
6821 * XXX: probably not very appropriate method is used now
6822 * at some point we should find a better one
6824 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) &&
6825 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) &&
6826 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
6827 rc = obd_get_info(env, mdt->mdt_child_exp,
6828 sizeof(KEY_OSP_CONNECTED),
6829 KEY_OSP_CONNECTED, NULL, NULL);
6832 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
6835 rc = class_connect(&conn, obd, cluuid);
6839 lexp = class_conn2export(&conn);
6840 LASSERT(lexp != NULL);
6842 rc = nodemap_add_member(*client_nid, lexp);
6843 if (rc != 0 && rc != -EEXIST)
6846 rc = mdt_connect_internal(env, lexp, mdt, data, false);
6848 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
6851 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
6852 rc = tgt_client_new(env, lexp);
6854 mdt_export_stats_init(obd, lexp, localdata);
6858 class_disconnect(lexp);
6859 nodemap_del_member(lexp);
6863 /* Because we do not want this export to be evicted by pinger,
6864 * let's not add this export to the timed chain list. */
6865 if (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) {
6866 spin_lock(&lexp->exp_obd->obd_dev_lock);
6867 list_del_init(&lexp->exp_obd_chain_timed);
6868 spin_unlock(&lexp->exp_obd->obd_dev_lock);
6875 static int mdt_obd_reconnect(const struct lu_env *env,
6876 struct obd_export *exp, struct obd_device *obd,
6877 struct obd_uuid *cluuid,
6878 struct obd_connect_data *data,
6881 lnet_nid_t *client_nid = localdata;
6885 if (exp == NULL || obd == NULL || cluuid == NULL)
6888 rc = nodemap_add_member(*client_nid, exp);
6889 if (rc != 0 && rc != -EEXIST)
6892 rc = mdt_connect_internal(env, exp, mdt_dev(obd->obd_lu_dev), data,
6895 mdt_export_stats_init(obd, exp, localdata);
6897 nodemap_del_member(exp);
6902 /* FIXME: Can we avoid using these two interfaces? */
6903 static int mdt_init_export(struct obd_export *exp)
6905 struct mdt_export_data *med = &exp->exp_mdt_data;
6909 INIT_LIST_HEAD(&med->med_open_head);
6910 spin_lock_init(&med->med_open_lock);
6911 spin_lock(&exp->exp_lock);
6912 exp->exp_connecting = 1;
6913 spin_unlock(&exp->exp_lock);
6915 OBD_ALLOC(exp->exp_used_slots,
6916 BITS_TO_LONGS(OBD_MAX_RIF_MAX) * sizeof(long));
6917 if (exp->exp_used_slots == NULL)
6920 /* self-export doesn't need client data and ldlm initialization */
6921 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
6922 &exp->exp_client_uuid)))
6925 rc = tgt_client_alloc(exp);
6929 rc = ldlm_init_export(exp);
6936 tgt_client_free(exp);
6938 OBD_FREE(exp->exp_used_slots,
6939 BITS_TO_LONGS(OBD_MAX_RIF_MAX) * sizeof(long));
6940 exp->exp_used_slots = NULL;
6942 CERROR("%s: Failed to initialize export: rc = %d\n",
6943 exp->exp_obd->obd_name, rc);
6947 static int mdt_destroy_export(struct obd_export *exp)
6951 target_destroy_export(exp);
6952 if (exp->exp_used_slots)
6953 OBD_FREE(exp->exp_used_slots,
6954 BITS_TO_LONGS(OBD_MAX_RIF_MAX) * sizeof(long));
6956 /* destroy can be called from failed obd_setup, so
6957 * checking uuid is safer than obd_self_export */
6958 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
6959 &exp->exp_client_uuid)))
6962 ldlm_destroy_export(exp);
6963 tgt_client_free(exp);
6965 LASSERT(list_empty(&exp->exp_outstanding_replies));
6966 LASSERT(list_empty(&exp->exp_mdt_data.med_open_head));
6969 * discard grants once we're sure no more
6970 * interaction with the client is possible
6972 tgt_grant_discard(exp);
6973 if (exp_connect_flags(exp) & OBD_CONNECT_GRANT)
6974 exp->exp_obd->u.obt.obt_lut->lut_tgd.tgd_tot_granted_clients--;
6976 if (!(exp->exp_flags & OBD_OPT_FORCE))
6977 tgt_grant_sanity_check(exp->exp_obd, __func__);
6982 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
6983 struct linkea_data *ldata)
6987 LASSERT(ldata->ld_buf->lb_buf != NULL);
6989 if (!mdt_object_exists(mdt_obj))
6992 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6993 ldata->ld_buf, XATTR_NAME_LINK);
6994 if (rc == -ERANGE) {
6995 /* Buf was too small, figure out what we need. */
6996 lu_buf_free(ldata->ld_buf);
6997 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6998 ldata->ld_buf, XATTR_NAME_LINK);
7001 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
7002 if (ldata->ld_buf->lb_buf == NULL)
7004 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
7005 ldata->ld_buf, XATTR_NAME_LINK);
7010 return linkea_init_with_rec(ldata);
7014 * Given an MDT object, try to look up the full path to the object.
7015 * Part of the MDT layer implementation of lfs fid2path.
7017 * \param[in] info Per-thread common data shared by MDT level handlers.
7018 * \param[in] obj Object to do path lookup of
7019 * \param[in,out] fp User-provided struct to store path information
7020 * \param[in] root_fid Root FID of current path should reach
7022 * \retval 0 Lookup successful, path information stored in fp
7023 * \retval -EAGAIN Lookup failed, usually because object is being moved
7024 * \retval negative errno if there was a problem
7026 static int mdt_path_current(struct mdt_thread_info *info,
7027 struct mdt_object *obj,
7028 struct getinfo_fid2path *fp,
7029 struct lu_fid *root_fid)
7031 struct mdt_device *mdt = info->mti_mdt;
7032 struct lu_name *tmpname = &info->mti_name;
7033 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
7034 struct lu_buf *buf = &info->mti_big_buf;
7035 struct linkea_data ldata = { NULL };
7037 struct mdt_object *mdt_obj;
7038 struct link_ea_header *leh;
7039 struct link_ea_entry *lee;
7046 /* temp buffer for path element, the buffer will be finally freed
7047 * in mdt_thread_info_fini */
7048 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
7049 if (buf->lb_buf == NULL)
7053 ptr = fp->gf_u.gf_path + fp->gf_pathlen - 1;
7056 *tmpfid = fp->gf_fid = *mdt_object_fid(obj);
7058 while (!lu_fid_eq(root_fid, &fp->gf_fid)) {
7059 if (!lu_fid_eq(root_fid, &mdt->mdt_md_root_fid) &&
7060 lu_fid_eq(&mdt->mdt_md_root_fid, &fp->gf_fid))
7061 GOTO(out, rc = -ENOENT);
7063 if (lu_fid_eq(mdt_object_fid(obj), tmpfid)) {
7065 mdt_object_get(info->mti_env, mdt_obj);
7067 mdt_obj = mdt_object_find(info->mti_env, mdt, tmpfid);
7068 if (IS_ERR(mdt_obj))
7069 GOTO(out, rc = PTR_ERR(mdt_obj));
7072 if (!mdt_object_exists(mdt_obj)) {
7073 mdt_object_put(info->mti_env, mdt_obj);
7074 GOTO(out, rc = -ENOENT);
7077 if (mdt_object_remote(mdt_obj)) {
7078 mdt_object_put(info->mti_env, mdt_obj);
7079 GOTO(remote_out, rc = -EREMOTE);
7082 rc = mdt_links_read(info, mdt_obj, &ldata);
7084 mdt_object_put(info->mti_env, mdt_obj);
7089 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
7090 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
7091 /* If set, use link #linkno for path lookup, otherwise use
7092 link #0. Only do this for the final path element. */
7093 if (first && fp->gf_linkno < leh->leh_reccount) {
7095 for (count = 0; count < fp->gf_linkno; count++) {
7096 lee = (struct link_ea_entry *)
7097 ((char *)lee + reclen);
7098 linkea_entry_unpack(lee, &reclen, tmpname,
7101 if (fp->gf_linkno < leh->leh_reccount - 1)
7102 /* indicate to user there are more links */
7106 /* Check if it is slave stripes */
7107 rc = mdt_is_dir_stripe(info, mdt_obj);
7108 mdt_object_put(info->mti_env, mdt_obj);
7112 fp->gf_fid = *tmpfid;
7116 /* Pack the name in the end of the buffer */
7117 ptr -= tmpname->ln_namelen;
7118 if (ptr - 1 <= fp->gf_u.gf_path)
7119 GOTO(out, rc = -EOVERFLOW);
7120 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
7123 /* keep the last resolved fid to the client, so the
7124 * client will build the left path on another MDT for
7126 fp->gf_fid = *tmpfid;
7131 /* non-zero will be treated as an error */
7135 ptr++; /* skip leading / */
7136 memmove(fp->gf_u.gf_path, ptr,
7137 fp->gf_u.gf_path + fp->gf_pathlen - ptr);
7144 * Given an MDT object, use mdt_path_current to get the path.
7145 * Essentially a wrapper to retry mdt_path_current a set number of times
7146 * if -EAGAIN is returned (usually because an object is being moved).
7148 * Part of the MDT layer implementation of lfs fid2path.
7150 * \param[in] info Per-thread common data shared by mdt level handlers.
7151 * \param[in] obj Object to do path lookup of
7152 * \param[in,out] fp User-provided struct for arguments and to store path
7155 * \retval 0 Lookup successful, path information stored in fp
7156 * \retval negative errno if there was a problem
7158 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
7159 struct getinfo_fid2path *fp, struct lu_fid *root_fid)
7161 struct mdt_device *mdt = info->mti_mdt;
7166 if (fp->gf_pathlen < 3)
7169 if (root_fid == NULL)
7170 root_fid = &mdt->mdt_md_root_fid;
7172 if (lu_fid_eq(root_fid, mdt_object_fid(obj))) {
7173 fp->gf_u.gf_path[0] = '\0';
7177 /* Retry multiple times in case file is being moved */
7178 while (tries-- && rc == -EAGAIN)
7179 rc = mdt_path_current(info, obj, fp, root_fid);
7185 * Get the full path of the provided FID, as of changelog record recno.
7187 * This checks sanity and looks up object for user provided FID
7188 * before calling the actual path lookup code.
7190 * Part of the MDT layer implementation of lfs fid2path.
7192 * \param[in] info Per-thread common data shared by mdt level handlers.
7193 * \param[in,out] fp User-provided struct for arguments and to store path
7196 * \retval 0 Lookup successful, path information and recno stored in fp
7197 * \retval -ENOENT, object does not exist
7198 * \retval negative errno if there was a problem
7200 static int mdt_fid2path(struct mdt_thread_info *info,
7201 struct lu_fid *root_fid,
7202 struct getinfo_fid2path *fp)
7204 struct mdt_device *mdt = info->mti_mdt;
7205 struct mdt_object *obj;
7209 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
7210 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
7212 if (!fid_is_sane(&fp->gf_fid))
7215 if (!fid_is_namespace_visible(&fp->gf_fid)) {
7216 CDEBUG(D_INFO, "%s: "DFID" is invalid, f_seq should be >= %#llx"
7217 ", or f_oid != 0, or f_ver == 0\n", mdt_obd_name(mdt),
7218 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
7222 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
7225 CDEBUG(D_IOCTL, "cannot find "DFID": rc = %d\n",
7226 PFID(&fp->gf_fid), rc);
7230 if (mdt_object_remote(obj)) {
7232 } else if (!mdt_object_exists(obj)) {
7235 struct lu_attr la = { 0 };
7236 struct dt_object *dt = mdt_obj2dt(obj);
7238 if (dt && dt->do_ops && dt->do_ops->do_attr_get)
7239 dt_attr_get(info->mti_env, mdt_obj2dt(obj), &la);
7240 if (la.la_valid & LA_FLAGS && la.la_flags & LUSTRE_ENCRYPT_FL)
7241 /* path resolution cannot be carried out on server
7242 * side for encrypted files
7250 mdt_object_put(info->mti_env, obj);
7251 CDEBUG(D_IOCTL, "nonlocal object "DFID": rc = %d\n",
7252 PFID(&fp->gf_fid), rc);
7256 rc = mdt_path(info, obj, fp, root_fid);
7258 CDEBUG(D_INFO, "fid "DFID", path %s recno %#llx linkno %u\n",
7259 PFID(&fp->gf_fid), fp->gf_u.gf_path,
7260 fp->gf_recno, fp->gf_linkno);
7262 mdt_object_put(info->mti_env, obj);
7267 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key, int keylen,
7268 void *val, int vallen)
7270 struct getinfo_fid2path *fpout, *fpin;
7271 struct lu_fid *root_fid = NULL;
7274 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
7277 if (req_capsule_req_need_swab(info->mti_pill))
7278 lustre_swab_fid2path(fpin);
7280 memcpy(fpout, fpin, sizeof(*fpin));
7281 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
7284 if (keylen >= cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*fpin) +
7285 sizeof(struct lu_fid)) {
7286 /* client sent its root FID, which is normally fileset FID */
7287 root_fid = fpin->gf_u.gf_root_fid;
7288 if (req_capsule_req_need_swab(info->mti_pill))
7289 lustre_swab_lu_fid(root_fid);
7291 if (root_fid != NULL && !fid_is_sane(root_fid))
7295 rc = mdt_fid2path(info, root_fid, fpout);
7299 int mdt_get_info(struct tgt_session_info *tsi)
7309 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
7311 CDEBUG(D_IOCTL, "No GETINFO key\n");
7312 RETURN(err_serious(-EFAULT));
7314 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
7317 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
7318 if (vallen == NULL) {
7319 CDEBUG(D_IOCTL, "%s: cannot get RMF_GETINFO_VALLEN buffer\n",
7320 tgt_name(tsi->tsi_tgt));
7321 RETURN(err_serious(-EFAULT));
7324 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
7326 rc = req_capsule_server_pack(tsi->tsi_pill);
7328 RETURN(err_serious(rc));
7330 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
7331 if (valout == NULL) {
7332 CDEBUG(D_IOCTL, "%s: cannot get get-info RPC out buffer\n",
7333 tgt_name(tsi->tsi_tgt));
7334 RETURN(err_serious(-EFAULT));
7337 if (KEY_IS(KEY_FID2PATH)) {
7338 struct mdt_thread_info *info = tsi2mdt_info(tsi);
7340 rc = mdt_rpc_fid2path(info, key, keylen, valout, *vallen);
7341 mdt_thread_info_fini(info);
7348 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
7350 struct obd_ioctl_data *data = karg;
7353 struct mdt_object *obj;
7354 struct mdt_lock_handle *lh;
7358 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
7359 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
7362 fid = (struct lu_fid *)data->ioc_inlbuf1;
7364 if (!fid_is_sane(fid))
7367 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
7369 lh = &mti->mti_lh[MDT_LH_PARENT];
7370 mdt_lock_reg_init(lh, LCK_CR);
7372 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
7374 RETURN(PTR_ERR(obj));
7376 if (mdt_object_remote(obj)) {
7379 * before calling version get the correct MDS should be
7380 * fid, this is error to find remote object here
7382 CERROR("nonlocal object "DFID"\n", PFID(fid));
7383 } else if (!mdt_object_exists(obj)) {
7384 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
7387 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
7388 *(__u64 *)data->ioc_inlbuf2 = version;
7391 mdt_object_unlock_put(mti, obj, lh, 1);
7395 /* ioctls on obd dev */
7396 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
7397 void *karg, void __user *uarg)
7400 struct obd_device *obd = exp->exp_obd;
7401 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
7402 struct dt_device *dt = mdt->mdt_bottom;
7406 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
7407 rc = lu_env_init(&env, LCT_MD_THREAD);
7413 rc = mdt_device_sync(&env, mdt);
7415 case OBD_IOC_SET_READONLY:
7416 rc = dt_sync(&env, dt);
7418 rc = dt_ro(&env, dt);
7420 case OBD_IOC_ABORT_RECOVERY: {
7421 struct obd_ioctl_data *data = karg;
7423 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
7424 if (data->ioc_type & OBD_FLG_ABORT_RECOV_MDT) {
7425 obd->obd_abort_recov_mdt = 1;
7426 wake_up(&obd->obd_next_transno_waitq);
7427 } else { /* if (data->ioc_type & OBD_FLG_ABORT_RECOV_OST) */
7428 /* lctl didn't set OBD_FLG_ABORT_RECOV_OST < 2.13.57 */
7429 obd->obd_abort_recovery = 1;
7430 target_stop_recovery_thread(obd);
7435 case OBD_IOC_CHANGELOG_REG:
7436 case OBD_IOC_CHANGELOG_DEREG:
7437 case OBD_IOC_CHANGELOG_CLEAR:
7438 rc = mdt->mdt_child->md_ops->mdo_iocontrol(&env,
7442 case OBD_IOC_START_LFSCK: {
7443 struct md_device *next = mdt->mdt_child;
7444 struct obd_ioctl_data *data = karg;
7445 struct lfsck_start_param lsp;
7447 if (unlikely(data == NULL)) {
7452 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
7453 lsp.lsp_index_valid = 0;
7454 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
7457 case OBD_IOC_STOP_LFSCK: {
7458 struct md_device *next = mdt->mdt_child;
7459 struct obd_ioctl_data *data = karg;
7460 struct lfsck_stop stop;
7462 stop.ls_status = LS_STOPPED;
7463 /* Old lfsck utils may pass NULL @stop. */
7464 if (data->ioc_inlbuf1 == NULL)
7468 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
7470 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
7473 case OBD_IOC_QUERY_LFSCK: {
7474 struct md_device *next = mdt->mdt_child;
7475 struct obd_ioctl_data *data = karg;
7477 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0,
7481 case OBD_IOC_GET_OBJ_VERSION: {
7482 struct mdt_thread_info *mti;
7483 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
7484 memset(mti, 0, sizeof *mti);
7485 mti->mti_env = &env;
7489 rc = mdt_ioc_version_get(mti, karg);
7492 case OBD_IOC_CATLOGLIST: {
7493 struct mdt_thread_info *mti;
7495 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
7496 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
7497 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
7498 &mti->mti_tmp_fid1);
7503 CERROR("%s: Not supported cmd = %d, rc = %d\n",
7504 mdt_obd_name(mdt), cmd, rc);
7511 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
7513 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
7517 if (!mdt->mdt_skip_lfsck && !mdt->mdt_bottom->dd_rdonly) {
7518 struct lfsck_start_param lsp;
7520 lsp.lsp_start = NULL;
7521 lsp.lsp_index_valid = 0;
7522 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
7523 OBD_IOC_START_LFSCK,
7525 if (rc != 0 && rc != -EALREADY)
7526 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
7527 mdt_obd_name(mdt), rc);
7530 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
7534 static int mdt_obd_postrecov(struct obd_device *obd)
7539 rc = lu_env_init(&env, LCT_MD_THREAD);
7542 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
7547 static const struct obd_ops mdt_obd_device_ops = {
7548 .o_owner = THIS_MODULE,
7549 .o_set_info_async = mdt_obd_set_info_async,
7550 .o_connect = mdt_obd_connect,
7551 .o_reconnect = mdt_obd_reconnect,
7552 .o_disconnect = mdt_obd_disconnect,
7553 .o_init_export = mdt_init_export,
7554 .o_destroy_export = mdt_destroy_export,
7555 .o_iocontrol = mdt_iocontrol,
7556 .o_postrecov = mdt_obd_postrecov,
7557 /* Data-on-MDT IO methods */
7558 .o_preprw = mdt_obd_preprw,
7559 .o_commitrw = mdt_obd_commitrw,
7562 static struct lu_device* mdt_device_fini(const struct lu_env *env,
7563 struct lu_device *d)
7565 struct mdt_device *m = mdt_dev(d);
7572 static struct lu_device *mdt_device_free(const struct lu_env *env,
7573 struct lu_device *d)
7575 struct mdt_device *m = mdt_dev(d);
7578 lu_device_fini(&m->mdt_lu_dev);
7584 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
7585 struct lu_device_type *t,
7586 struct lustre_cfg *cfg)
7588 struct lu_device *l;
7589 struct mdt_device *m;
7596 rc = mdt_init0(env, m, t, cfg);
7598 mdt_device_free(env, l);
7603 l = ERR_PTR(-ENOMEM);
7607 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
7608 LU_KEY_INIT(mdt, struct mdt_thread_info);
7610 static void mdt_key_fini(const struct lu_context *ctx,
7611 struct lu_context_key *key, void* data)
7613 struct mdt_thread_info *info = data;
7615 if (info->mti_big_lmm) {
7616 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
7617 info->mti_big_lmm = NULL;
7618 info->mti_big_lmmsize = 0;
7621 if (info->mti_big_acl) {
7622 OBD_FREE_LARGE(info->mti_big_acl, info->mti_big_aclsize);
7623 info->mti_big_acl = NULL;
7624 info->mti_big_aclsize = 0;
7630 /* context key: mdt_thread_key */
7631 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
7633 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
7635 return lu_ucred(info->mti_env);
7638 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
7640 return lu_ucred_check(info->mti_env);
7644 * Enable/disable COS (Commit On Sharing).
7646 * Set/Clear the COS flag in mdt options.
7648 * \param mdt mdt device
7649 * \param val 0 disables COS, other values enable COS
7651 void mdt_enable_cos(struct mdt_device *mdt, bool val)
7656 mdt->mdt_opts.mo_cos = val;
7657 rc = lu_env_init(&env, LCT_LOCAL);
7658 if (unlikely(rc != 0)) {
7659 CWARN("%s: lu_env initialization failed, cannot "
7660 "sync: rc = %d\n", mdt_obd_name(mdt), rc);
7663 mdt_device_sync(&env, mdt);
7668 * Check COS (Commit On Sharing) status.
7670 * Return COS flag status.
7672 * \param mdt mdt device
7674 int mdt_cos_is_enabled(struct mdt_device *mdt)
7676 return mdt->mdt_opts.mo_cos != 0;
7679 static const struct lu_device_type_operations mdt_device_type_ops = {
7680 .ldto_device_alloc = mdt_device_alloc,
7681 .ldto_device_free = mdt_device_free,
7682 .ldto_device_fini = mdt_device_fini
7685 static struct lu_device_type mdt_device_type = {
7686 .ldt_tags = LU_DEVICE_MD,
7687 .ldt_name = LUSTRE_MDT_NAME,
7688 .ldt_ops = &mdt_device_type_ops,
7689 .ldt_ctx_tags = LCT_MD_THREAD
7692 static int __init mdt_init(void)
7696 BUILD_BUG_ON(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") !=
7697 FID_NOBRACE_LEN + 1);
7698 BUILD_BUG_ON(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") !=
7700 rc = lu_kmem_init(mdt_caches);
7704 rc = mds_mod_init();
7708 rc = class_register_type(&mdt_obd_device_ops, NULL, true,
7709 LUSTRE_MDT_NAME, &mdt_device_type);
7714 lu_kmem_fini(mdt_caches);
7721 static void __exit mdt_exit(void)
7723 class_unregister_type(LUSTRE_MDT_NAME);
7725 lu_kmem_fini(mdt_caches);
7728 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
7729 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
7730 MODULE_VERSION(LUSTRE_VERSION_STRING);
7731 MODULE_LICENSE("GPL");
7733 module_init(mdt_init);
7734 module_exit(mdt_exit);