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>
67 #include "mdt_internal.h"
69 static unsigned int max_mod_rpcs_per_client = 8;
70 module_param(max_mod_rpcs_per_client, uint, 0644);
71 MODULE_PARM_DESC(max_mod_rpcs_per_client, "maximum number of modify RPCs in flight allowed per client");
73 mdl_mode_t mdt_mdl_lock_modes[] = {
74 [LCK_MINMODE] = MDL_MINMODE,
81 [LCK_GROUP] = MDL_GROUP
84 enum ldlm_mode mdt_dlm_lock_modes[] = {
85 [MDL_MINMODE] = LCK_MINMODE,
92 [MDL_GROUP] = LCK_GROUP
95 static struct mdt_device *mdt_dev(struct lu_device *d);
97 static const struct lu_object_operations mdt_obj_ops;
99 /* Slab for MDT object allocation */
100 static struct kmem_cache *mdt_object_kmem;
102 /* For HSM restore handles */
103 struct kmem_cache *mdt_hsm_cdt_kmem;
105 /* For HSM request handles */
106 struct kmem_cache *mdt_hsm_car_kmem;
108 static struct lu_kmem_descr mdt_caches[] = {
110 .ckd_cache = &mdt_object_kmem,
111 .ckd_name = "mdt_obj",
112 .ckd_size = sizeof(struct mdt_object)
115 .ckd_cache = &mdt_hsm_cdt_kmem,
116 .ckd_name = "mdt_cdt_restore_handle",
117 .ckd_size = sizeof(struct cdt_restore_handle)
120 .ckd_cache = &mdt_hsm_car_kmem,
121 .ckd_name = "mdt_cdt_agent_req",
122 .ckd_size = sizeof(struct cdt_agent_req)
129 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag)
133 return rep->lock_policy_res1 & op_flag;
136 void mdt_clear_disposition(struct mdt_thread_info *info,
137 struct ldlm_reply *rep, __u64 op_flag)
140 info->mti_opdata &= ~op_flag;
141 tgt_opdata_clear(info->mti_env, op_flag);
144 rep->lock_policy_res1 &= ~op_flag;
147 void mdt_set_disposition(struct mdt_thread_info *info,
148 struct ldlm_reply *rep, __u64 op_flag)
151 info->mti_opdata |= op_flag;
152 tgt_opdata_set(info->mti_env, op_flag);
155 rep->lock_policy_res1 |= op_flag;
158 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm)
160 lh->mlh_pdo_hash = 0;
161 lh->mlh_reg_mode = lm;
162 lh->mlh_rreg_mode = lm;
163 lh->mlh_type = MDT_REG_LOCK;
166 void mdt_lh_reg_init(struct mdt_lock_handle *lh, struct ldlm_lock *lock)
168 mdt_lock_reg_init(lh, lock->l_req_mode);
169 if (lock->l_req_mode == LCK_GROUP)
170 lh->mlh_gid = lock->l_policy_data.l_inodebits.li_gid;
173 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
174 const struct lu_name *lname)
176 lh->mlh_reg_mode = lock_mode;
177 lh->mlh_pdo_mode = LCK_MINMODE;
178 lh->mlh_rreg_mode = lock_mode;
179 lh->mlh_type = MDT_PDO_LOCK;
181 if (lu_name_is_valid(lname)) {
182 lh->mlh_pdo_hash = ll_full_name_hash(NULL, lname->ln_name,
184 /* XXX Workaround for LU-2856
186 * Zero is a valid return value of full_name_hash, but
187 * several users of mlh_pdo_hash assume a non-zero
188 * hash value. We therefore map zero onto an
189 * arbitrary, but consistent value (1) to avoid
190 * problems further down the road. */
191 if (unlikely(lh->mlh_pdo_hash == 0))
192 lh->mlh_pdo_hash = 1;
194 lh->mlh_pdo_hash = 0;
198 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
199 struct mdt_lock_handle *lh)
205 * Any dir access needs couple of locks:
207 * 1) on part of dir we gonna take lookup/modify;
209 * 2) on whole dir to protect it from concurrent splitting and/or to
210 * flush client's cache for readdir().
212 * so, for a given mode and object this routine decides what lock mode
213 * to use for lock #2:
215 * 1) if caller's gonna lookup in dir then we need to protect dir from
216 * being splitted only - LCK_CR
218 * 2) if caller's gonna modify dir then we need to protect dir from
219 * being splitted and to flush cache - LCK_CW
221 * 3) if caller's gonna modify dir and that dir seems ready for
222 * splitting then we need to protect it from any type of access
223 * (lookup/modify/split) - LCK_EX --bzzz
226 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
227 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
230 * Ask underlaying level its opinion about preferable PDO lock mode
231 * having access type passed as regular lock mode:
233 * - MDL_MINMODE means that lower layer does not want to specify lock
236 * - MDL_NL means that no PDO lock should be taken. This is used in some
237 * cases. Say, for non-splittable directories no need to use PDO locks
240 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
241 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
243 if (mode != MDL_MINMODE) {
244 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
247 * Lower layer does not want to specify locking mode. We do it
248 * our selves. No special protection is needed, just flush
249 * client's cache on modification and allow concurrent
252 switch (lh->mlh_reg_mode) {
254 lh->mlh_pdo_mode = LCK_EX;
257 lh->mlh_pdo_mode = LCK_CR;
260 lh->mlh_pdo_mode = LCK_CW;
263 CERROR("Not expected lock type (0x%x)\n",
264 (int)lh->mlh_reg_mode);
269 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
273 static int mdt_lookup_fileset(struct mdt_thread_info *info, const char *fileset,
276 struct mdt_device *mdt = info->mti_mdt;
277 struct lu_name *lname = &info->mti_name;
278 const char *start = fileset;
279 char *filename = info->mti_filename;
280 struct mdt_object *parent;
284 LASSERT(!info->mti_cross_ref);
287 * We may want to allow this to mount a completely separate
288 * fileset from the MDT in the future, but keeping it to
289 * ROOT/ only for now avoid potential security issues.
291 *fid = mdt->mdt_md_root_fid;
293 while (rc == 0 && start != NULL && *start != '\0') {
294 const char *s1 = start;
300 while (*s2 != '/' && *s2 != '\0')
308 lname->ln_namelen = s2 - s1;
309 if (lname->ln_namelen > NAME_MAX) {
314 /* reject .. as a path component */
315 if (lname->ln_namelen == 2 &&
316 strncmp(s1, "..", 2) == 0) {
321 strncpy(filename, s1, lname->ln_namelen);
322 filename[lname->ln_namelen] = '\0';
323 lname->ln_name = filename;
325 parent = mdt_object_find(info->mti_env, mdt, fid);
326 if (IS_ERR(parent)) {
327 rc = PTR_ERR(parent);
330 /* Only got the fid of this obj by name */
332 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
333 fid, &info->mti_spec);
334 mdt_object_put(info->mti_env, parent);
337 parent = mdt_object_find(info->mti_env, mdt, fid);
339 rc = PTR_ERR(parent);
341 mode = lu_object_attr(&parent->mot_obj);
342 if (!S_ISDIR(mode)) {
344 } else if (mdt_is_remote_object(info, parent, parent)) {
345 if (!mdt->mdt_enable_remote_subdir_mount) {
347 LCONSOLE_WARN("%s: subdir mount '%s' refused because 'enable_remote_subdir_mount=0': rc = %d\n",
351 LCONSOLE_INFO("%s: subdir mount '%s' is remote and may be slow\n",
356 mdt_object_put(info->mti_env, parent);
363 static int mdt_get_root(struct tgt_session_info *tsi)
365 struct mdt_thread_info *info = tsi2mdt_info(tsi);
366 struct mdt_device *mdt = info->mti_mdt;
367 struct mdt_body *repbody;
368 char *fileset = NULL, *buffer = NULL;
370 struct obd_export *exp = info->mti_exp;
371 char *nodemap_fileset;
375 rc = mdt_check_ucred(info);
377 GOTO(out, rc = err_serious(rc));
379 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GET_ROOT_PACK))
380 GOTO(out, rc = err_serious(-ENOMEM));
382 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
383 if (req_capsule_get_size(info->mti_pill, &RMF_NAME, RCL_CLIENT) > 0) {
384 fileset = req_capsule_client_get(info->mti_pill, &RMF_NAME);
386 GOTO(out, rc = err_serious(-EFAULT));
389 nodemap_fileset = nodemap_get_fileset(exp->exp_target_data.ted_nodemap);
390 if (nodemap_fileset && nodemap_fileset[0]) {
391 CDEBUG(D_INFO, "nodemap fileset is %s\n", nodemap_fileset);
393 /* consider fileset from client as a sub-fileset
394 * of the nodemap one */
395 OBD_ALLOC(buffer, PATH_MAX + 1);
397 GOTO(out, rc = err_serious(-ENOMEM));
398 if (snprintf(buffer, PATH_MAX + 1, "%s/%s",
399 nodemap_fileset, fileset) >= PATH_MAX + 1)
400 GOTO(out, rc = err_serious(-EINVAL));
403 /* enforce fileset as specified in the nodemap */
404 fileset = nodemap_fileset;
409 CDEBUG(D_INFO, "Getting fileset %s\n", fileset);
410 rc = mdt_lookup_fileset(info, fileset, &repbody->mbo_fid1);
412 GOTO(out, rc = err_serious(rc));
414 repbody->mbo_fid1 = mdt->mdt_md_root_fid;
416 repbody->mbo_valid |= OBD_MD_FLID;
420 mdt_thread_info_fini(info);
422 OBD_FREE(buffer, PATH_MAX+1);
426 static int mdt_statfs(struct tgt_session_info *tsi)
428 struct ptlrpc_request *req = tgt_ses_req(tsi);
429 struct mdt_thread_info *info = tsi2mdt_info(tsi);
430 struct mdt_device *mdt = info->mti_mdt;
431 struct tg_grants_data *tgd = &mdt->mdt_lut.lut_tgd;
432 struct md_device *next = mdt->mdt_child;
433 struct ptlrpc_service_part *svcpt;
434 struct obd_statfs *osfs;
435 struct mdt_body *reqbody = NULL;
436 struct mdt_statfs_cache *msf;
437 ktime_t kstart = ktime_get();
438 int current_blockbits;
443 svcpt = req->rq_rqbd->rqbd_svcpt;
445 /* This will trigger a watchdog timeout */
446 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
447 (MDT_SERVICE_WATCHDOG_FACTOR *
448 at_get(&svcpt->scp_at_estimate)) + 1);
450 rc = mdt_check_ucred(info);
452 GOTO(out, rc = err_serious(rc));
454 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
455 GOTO(out, rc = err_serious(-ENOMEM));
457 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
459 GOTO(out, rc = -EPROTO);
461 if (mdt_is_sum_statfs_client(req->rq_export) &&
462 lustre_packed_msg_size(req->rq_reqmsg) ==
463 req_capsule_fmt_size(req->rq_reqmsg->lm_magic,
464 &RQF_MDS_STATFS_NEW, RCL_CLIENT)) {
465 req_capsule_extend(info->mti_pill, &RQF_MDS_STATFS_NEW);
466 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
469 if (reqbody && reqbody->mbo_valid & OBD_MD_FLAGSTATFS)
470 msf = &mdt->mdt_sum_osfs;
472 msf = &mdt->mdt_osfs;
474 if (msf->msf_age + OBD_STATFS_CACHE_SECONDS <= ktime_get_seconds()) {
475 /** statfs data is too old, get up-to-date one */
476 if (reqbody && reqbody->mbo_valid & OBD_MD_FLAGSTATFS)
477 rc = next->md_ops->mdo_statfs(info->mti_env,
480 rc = dt_statfs(info->mti_env, mdt->mdt_bottom,
484 spin_lock(&mdt->mdt_lock);
485 msf->msf_osfs = *osfs;
486 msf->msf_age = ktime_get_seconds();
487 spin_unlock(&mdt->mdt_lock);
489 /** use cached statfs data */
490 spin_lock(&mdt->mdt_lock);
491 *osfs = msf->msf_osfs;
492 spin_unlock(&mdt->mdt_lock);
495 /* tgd_blockbit is recordsize bits set during mkfs.
496 * This once set does not change. However, 'zfs set'
497 * can be used to change the MDT blocksize. Instead
498 * of using cached value of 'tgd_blockbit' always
499 * calculate the blocksize bits which may have
502 current_blockbits = fls64(osfs->os_bsize) - 1;
504 /* at least try to account for cached pages. its still racy and
505 * might be under-reporting if clients haven't announced their
506 * caches with brw recently */
507 CDEBUG(D_SUPER | D_CACHE, "blocks cached %llu granted %llu"
508 " pending %llu free %llu avail %llu\n",
509 tgd->tgd_tot_dirty, tgd->tgd_tot_granted,
510 tgd->tgd_tot_pending,
511 osfs->os_bfree << current_blockbits,
512 osfs->os_bavail << current_blockbits);
514 osfs->os_bavail -= min_t(u64, osfs->os_bavail,
515 ((tgd->tgd_tot_dirty + tgd->tgd_tot_pending +
516 osfs->os_bsize - 1) >> current_blockbits));
518 tgt_grant_sanity_check(mdt->mdt_lu_dev.ld_obd, __func__);
519 CDEBUG(D_CACHE, "%llu blocks: %llu free, %llu avail; "
520 "%llu objects: %llu free; state %x\n",
521 osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
522 osfs->os_files, osfs->os_ffree, osfs->os_state);
524 if (!exp_grant_param_supp(tsi->tsi_exp) &&
525 current_blockbits > COMPAT_BSIZE_SHIFT) {
526 /* clients which don't support OBD_CONNECT_GRANT_PARAM
527 * should not see a block size > page size, otherwise
528 * cl_lost_grant goes mad. Therefore, we emulate a 4KB (=2^12)
529 * block size which is the biggest block size known to work
530 * with all client's page size. */
531 osfs->os_blocks <<= current_blockbits - COMPAT_BSIZE_SHIFT;
532 osfs->os_bfree <<= current_blockbits - COMPAT_BSIZE_SHIFT;
533 osfs->os_bavail <<= current_blockbits - COMPAT_BSIZE_SHIFT;
534 osfs->os_bsize = 1 << COMPAT_BSIZE_SHIFT;
537 mdt_counter_incr(req, LPROC_MDT_STATFS,
538 ktime_us_delta(ktime_get(), kstart));
540 mdt_thread_info_fini(info);
544 __u32 mdt_lmm_dom_entry_check(struct lov_mds_md *lmm, int *is_dom_only)
546 struct lov_comp_md_v1 *comp_v1;
547 struct lov_mds_md *v1;
549 __u32 dom_stripesize = 0;
551 bool has_ost_stripes = false;
558 if (le32_to_cpu(lmm->lmm_magic) != LOV_MAGIC_COMP_V1)
561 comp_v1 = (struct lov_comp_md_v1 *)lmm;
562 off = le32_to_cpu(comp_v1->lcm_entries[0].lcme_offset);
563 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
565 /* Fast check for DoM entry with no mirroring, should be the first */
566 if (le16_to_cpu(comp_v1->lcm_mirror_count) == 0 &&
567 lov_pattern(le32_to_cpu(v1->lmm_pattern)) != LOV_PATTERN_MDT)
570 /* check all entries otherwise */
571 for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
572 struct lov_comp_md_entry_v1 *lcme;
574 lcme = &comp_v1->lcm_entries[i];
575 if (!(le32_to_cpu(lcme->lcme_flags) & LCME_FL_INIT))
578 off = le32_to_cpu(lcme->lcme_offset);
579 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
581 if (lov_pattern(le32_to_cpu(v1->lmm_pattern)) ==
583 dom_stripesize = le32_to_cpu(v1->lmm_stripe_size);
585 has_ost_stripes = true;
587 if (dom_stripesize && has_ost_stripes)
588 RETURN(dom_stripesize);
590 /* DoM-only case exits here */
591 if (is_dom_only && dom_stripesize)
593 RETURN(dom_stripesize);
597 * Pack size attributes into the reply.
599 int mdt_pack_size2body(struct mdt_thread_info *info,
600 const struct lu_fid *fid, struct lustre_handle *lh)
603 struct md_attr *ma = &info->mti_attr;
605 bool dom_lock = false;
609 LASSERT(ma->ma_attr.la_valid & LA_MODE);
611 if (!S_ISREG(ma->ma_attr.la_mode) ||
612 !(ma->ma_valid & MA_LOV && ma->ma_lmm != NULL))
615 dom_stripe = mdt_lmm_dom_stripesize(ma->ma_lmm);
616 /* no DoM stripe, no size in reply */
620 if (lustre_handle_is_used(lh)) {
621 struct ldlm_lock *lock;
623 lock = ldlm_handle2lock(lh);
625 dom_lock = ldlm_has_dom(lock);
630 /* no DoM lock, no size in reply */
634 /* Either DoM lock exists or LMM has only DoM stripe then
635 * return size on body. */
636 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
638 mdt_dom_object_size(info->mti_env, info->mti_mdt, fid, b, dom_lock);
642 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
644 * Pack ACL data into the reply. UIDs/GIDs are mapped and filtered by nodemap.
646 * \param info thread info object
647 * \param repbody reply to pack ACLs into
648 * \param o mdt object of file to examine
649 * \param nodemap nodemap of client to reply to
651 * \retval -errno error getting or parsing ACL from disk
653 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
654 struct mdt_object *o, struct lu_nodemap *nodemap)
656 const struct lu_env *env = info->mti_env;
657 struct md_object *next = mdt_object_child(o);
658 struct lu_buf *buf = &info->mti_buf;
659 struct mdt_device *mdt = info->mti_mdt;
660 struct req_capsule *pill = info->mti_pill;
665 buf->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
666 buf->lb_len = req_capsule_get_size(pill, &RMF_ACL, RCL_SERVER);
667 if (buf->lb_len == 0)
670 LASSERT(!info->mti_big_acl_used);
672 rc = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_ACCESS);
674 if (rc == -ENODATA) {
675 repbody->mbo_aclsize = 0;
676 repbody->mbo_valid |= OBD_MD_FLACL;
678 } else if (rc == -EOPNOTSUPP) {
680 } else if (rc == -ERANGE) {
681 if (exp_connect_large_acl(info->mti_exp) &&
682 !info->mti_big_acl_used) {
683 if (info->mti_big_acl == NULL) {
684 info->mti_big_aclsize =
686 mdt->mdt_max_ea_size,
688 OBD_ALLOC_LARGE(info->mti_big_acl,
689 info->mti_big_aclsize);
690 if (info->mti_big_acl == NULL) {
691 info->mti_big_aclsize = 0;
692 CERROR("%s: unable to grow "
695 PFID(mdt_object_fid(o)));
700 CDEBUG(D_INODE, "%s: grow the "DFID
701 " ACL buffer to size %d\n",
703 PFID(mdt_object_fid(o)),
704 info->mti_big_aclsize);
706 buf->lb_buf = info->mti_big_acl;
707 buf->lb_len = info->mti_big_aclsize;
708 info->mti_big_acl_used = 1;
711 /* FS has ACL bigger that our limits */
712 CDEBUG(D_INODE, "%s: "DFID" ACL can't fit into %d\n",
713 mdt_obd_name(mdt), PFID(mdt_object_fid(o)),
714 info->mti_big_aclsize);
717 CERROR("%s: unable to read "DFID" ACL: rc = %d\n",
718 mdt_obd_name(mdt), PFID(mdt_object_fid(o)), rc);
721 rc = nodemap_map_acl(nodemap, buf->lb_buf,
722 rc, NODEMAP_FS_TO_CLIENT);
723 /* if all ACLs mapped out, rc is still >= 0 */
725 CERROR("%s: nodemap_map_acl unable to parse "DFID
726 " ACL: rc = %d\n", mdt_obd_name(mdt),
727 PFID(mdt_object_fid(o)), rc);
728 repbody->mbo_aclsize = 0;
729 repbody->mbo_valid &= ~OBD_MD_FLACL;
731 repbody->mbo_aclsize = rc;
732 repbody->mbo_valid |= OBD_MD_FLACL;
741 /* XXX Look into layout in MDT layer. */
742 static inline bool mdt_hsm_is_released(struct lov_mds_md *lmm)
744 struct lov_comp_md_v1 *comp_v1;
745 struct lov_mds_md *v1;
748 if (lmm->lmm_magic == LOV_MAGIC_COMP_V1) {
749 comp_v1 = (struct lov_comp_md_v1 *)lmm;
751 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
752 v1 = (struct lov_mds_md *)((char *)comp_v1 +
753 comp_v1->lcm_entries[i].lcme_offset);
754 /* We don't support partial release for now */
755 if (!(v1->lmm_pattern & LOV_PATTERN_F_RELEASED))
760 return (lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) ?
765 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
766 const struct lu_attr *attr, const struct lu_fid *fid)
768 struct md_attr *ma = &info->mti_attr;
769 struct obd_export *exp = info->mti_exp;
770 struct lu_nodemap *nodemap = NULL;
772 LASSERT(ma->ma_valid & MA_INODE);
774 if (attr->la_valid & LA_ATIME) {
775 b->mbo_atime = attr->la_atime;
776 b->mbo_valid |= OBD_MD_FLATIME;
778 if (attr->la_valid & LA_MTIME) {
779 b->mbo_mtime = attr->la_mtime;
780 b->mbo_valid |= OBD_MD_FLMTIME;
782 if (attr->la_valid & LA_CTIME) {
783 b->mbo_ctime = attr->la_ctime;
784 b->mbo_valid |= OBD_MD_FLCTIME;
786 if (attr->la_valid & LA_BTIME) {
787 b->mbo_btime = attr->la_btime;
788 b->mbo_valid |= OBD_MD_FLBTIME;
790 if (attr->la_valid & LA_FLAGS) {
791 b->mbo_flags = attr->la_flags;
792 b->mbo_valid |= OBD_MD_FLFLAGS;
794 if (attr->la_valid & LA_NLINK) {
795 b->mbo_nlink = attr->la_nlink;
796 b->mbo_valid |= OBD_MD_FLNLINK;
798 if (attr->la_valid & (LA_UID|LA_GID)) {
799 nodemap = nodemap_get_from_exp(exp);
803 if (attr->la_valid & LA_UID) {
804 b->mbo_uid = nodemap_map_id(nodemap, NODEMAP_UID,
805 NODEMAP_FS_TO_CLIENT,
807 b->mbo_valid |= OBD_MD_FLUID;
809 if (attr->la_valid & LA_GID) {
810 b->mbo_gid = nodemap_map_id(nodemap, NODEMAP_GID,
811 NODEMAP_FS_TO_CLIENT,
813 b->mbo_valid |= OBD_MD_FLGID;
816 if (attr->la_valid & LA_PROJID) {
817 /* TODO, nodemap for project id */
818 b->mbo_projid = attr->la_projid;
819 b->mbo_valid |= OBD_MD_FLPROJID;
822 b->mbo_mode = attr->la_mode;
823 if (attr->la_valid & LA_MODE)
824 b->mbo_valid |= OBD_MD_FLMODE;
825 if (attr->la_valid & LA_TYPE)
826 b->mbo_valid |= OBD_MD_FLTYPE;
830 b->mbo_valid |= OBD_MD_FLID;
831 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, valid=%#llx\n",
832 PFID(fid), b->mbo_nlink, b->mbo_mode, b->mbo_valid);
835 if (!(attr->la_valid & LA_TYPE))
838 b->mbo_rdev = attr->la_rdev;
839 b->mbo_size = attr->la_size;
840 b->mbo_blocks = attr->la_blocks;
842 if (!S_ISREG(attr->la_mode)) {
843 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
844 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
845 /* means no objects are allocated on osts. */
846 LASSERT(!(ma->ma_valid & MA_LOV));
847 /* just ignore blocks occupied by extend attributes on MDS */
849 /* if no object is allocated on osts, the size on mds is valid.
851 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
852 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL) {
853 if (mdt_hsm_is_released(ma->ma_lmm)) {
854 /* A released file stores its size on MDS. */
855 /* But return 1 block for released file, unless tools
856 * like tar will consider it fully sparse. (LU-3864)
858 if (unlikely(b->mbo_size == 0))
862 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
863 } else if (info->mti_som_valid) { /* som is valid */
864 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
865 } else if (ma->ma_valid & MA_SOM) { /* lsom is valid */
866 b->mbo_valid |= OBD_MD_FLLAZYSIZE | OBD_MD_FLLAZYBLOCKS;
867 b->mbo_size = ma->ma_som.ms_size;
868 b->mbo_blocks = ma->ma_som.ms_blocks;
872 if (fid != NULL && (b->mbo_valid & OBD_MD_FLSIZE ||
873 b->mbo_valid & OBD_MD_FLLAZYSIZE))
874 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
875 PFID(fid), (unsigned long long)b->mbo_size);
878 if (!IS_ERR_OR_NULL(nodemap))
879 nodemap_putref(nodemap);
882 static inline int mdt_body_has_lov(const struct lu_attr *la,
883 const struct mdt_body *body)
885 return (S_ISREG(la->la_mode) && (body->mbo_valid & OBD_MD_FLEASIZE)) ||
886 (S_ISDIR(la->la_mode) && (body->mbo_valid & OBD_MD_FLDIREA));
889 void mdt_client_compatibility(struct mdt_thread_info *info)
891 struct mdt_body *body;
892 struct ptlrpc_request *req = mdt_info_req(info);
893 struct obd_export *exp = req->rq_export;
894 struct md_attr *ma = &info->mti_attr;
895 struct lu_attr *la = &ma->ma_attr;
898 if (exp_connect_layout(exp))
899 /* the client can deal with 16-bit lmm_stripe_count */
902 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
904 if (!mdt_body_has_lov(la, body))
907 /* now we have a reply with a lov for a client not compatible with the
908 * layout lock so we have to clean the layout generation number */
909 if (S_ISREG(la->la_mode))
910 ma->ma_lmm->lmm_layout_gen = 0;
914 static int mdt_attr_get_eabuf_size(struct mdt_thread_info *info,
915 struct mdt_object *o)
917 const struct lu_env *env = info->mti_env;
920 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
929 /* Is it a directory? Let's check for the LMV as well */
930 if (S_ISDIR(lu_object_attr(&mdt_object_child(o)->mo_lu))) {
931 rc2 = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
935 rc2 = mo_xattr_get(env, mdt_object_child(o),
937 XATTR_NAME_DEFAULT_LMV);
939 if ((rc2 < 0 && rc2 != -ENODATA) || (rc2 > rc))
947 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
950 const struct lu_env *env = info->mti_env;
954 LASSERT(info->mti_big_lmm_used == 0);
955 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
959 /* big_lmm may need to be grown */
960 if (info->mti_big_lmmsize < rc) {
961 int size = size_roundup_power2(rc);
963 if (info->mti_big_lmmsize > 0) {
964 /* free old buffer */
965 LASSERT(info->mti_big_lmm);
966 OBD_FREE_LARGE(info->mti_big_lmm,
967 info->mti_big_lmmsize);
968 info->mti_big_lmm = NULL;
969 info->mti_big_lmmsize = 0;
972 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
973 if (info->mti_big_lmm == NULL)
975 info->mti_big_lmmsize = size;
977 LASSERT(info->mti_big_lmmsize >= rc);
979 info->mti_buf.lb_buf = info->mti_big_lmm;
980 info->mti_buf.lb_len = info->mti_big_lmmsize;
981 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
986 int __mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
987 struct md_attr *ma, const char *name)
989 struct md_object *next = mdt_object_child(o);
990 struct lu_buf *buf = &info->mti_buf;
993 if (strcmp(name, XATTR_NAME_LOV) == 0) {
994 buf->lb_buf = ma->ma_lmm;
995 buf->lb_len = ma->ma_lmm_size;
996 LASSERT(!(ma->ma_valid & MA_LOV));
997 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
998 buf->lb_buf = ma->ma_lmv;
999 buf->lb_len = ma->ma_lmv_size;
1000 LASSERT(!(ma->ma_valid & MA_LMV));
1001 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
1002 buf->lb_buf = ma->ma_default_lmv;
1003 buf->lb_len = ma->ma_default_lmv_size;
1004 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
1009 LASSERT(buf->lb_buf);
1011 rc = mo_xattr_get(info->mti_env, next, buf, name);
1015 if (strcmp(name, XATTR_NAME_LOV) == 0) {
1016 if (info->mti_big_lmm_used)
1017 ma->ma_lmm = info->mti_big_lmm;
1019 /* NOT return LOV EA with hole to old client. */
1020 if (unlikely(le32_to_cpu(ma->ma_lmm->lmm_pattern) &
1021 LOV_PATTERN_F_HOLE) &&
1022 !(exp_connect_flags(info->mti_exp) &
1023 OBD_CONNECT_LFSCK)) {
1026 ma->ma_lmm_size = rc;
1027 ma->ma_valid |= MA_LOV;
1029 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
1030 if (info->mti_big_lmm_used)
1031 ma->ma_lmv = info->mti_big_lmm;
1033 ma->ma_lmv_size = rc;
1034 ma->ma_valid |= MA_LMV;
1035 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
1036 ma->ma_default_lmv_size = rc;
1037 ma->ma_valid |= MA_LMV_DEF;
1040 /* Update mdt_max_mdsize so all clients will be aware that */
1041 if (info->mti_mdt->mdt_max_mdsize < rc)
1042 info->mti_mdt->mdt_max_mdsize = rc;
1045 } else if (rc == -ENODATA) {
1048 } else if (rc == -ERANGE) {
1049 /* Default LMV has fixed size, so it must be able to fit
1050 * in the original buffer */
1051 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
1053 rc = mdt_big_xattr_get(info, o, name);
1055 info->mti_big_lmm_used = 1;
1063 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
1064 struct md_attr *ma, const char *name)
1068 if (!info->mti_big_lmm) {
1069 OBD_ALLOC(info->mti_big_lmm, PAGE_SIZE);
1070 if (!info->mti_big_lmm)
1072 info->mti_big_lmmsize = PAGE_SIZE;
1075 if (strcmp(name, XATTR_NAME_LOV) == 0) {
1076 ma->ma_lmm = info->mti_big_lmm;
1077 ma->ma_lmm_size = info->mti_big_lmmsize;
1078 ma->ma_valid &= ~MA_LOV;
1079 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
1080 ma->ma_lmv = info->mti_big_lmm;
1081 ma->ma_lmv_size = info->mti_big_lmmsize;
1082 ma->ma_valid &= ~MA_LMV;
1087 LASSERT(!info->mti_big_lmm_used);
1088 rc = __mdt_stripe_get(info, o, ma, name);
1089 /* since big_lmm is always used here, clear 'used' flag to avoid
1090 * assertion in mdt_big_xattr_get().
1092 info->mti_big_lmm_used = 0;
1097 int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
1098 struct lu_fid *pfid)
1100 struct lu_buf *buf = &info->mti_buf;
1101 struct link_ea_header *leh;
1102 struct link_ea_entry *lee;
1106 buf->lb_buf = info->mti_big_lmm;
1107 buf->lb_len = info->mti_big_lmmsize;
1108 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
1109 buf, XATTR_NAME_LINK);
1110 /* ignore errors, MA_PFID won't be set and it is
1111 * up to the caller to treat this as an error */
1112 if (rc == -ERANGE || buf->lb_len == 0) {
1113 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
1114 buf->lb_buf = info->mti_big_lmm;
1115 buf->lb_len = info->mti_big_lmmsize;
1120 if (rc < sizeof(*leh)) {
1121 CERROR("short LinkEA on "DFID": rc = %d\n",
1122 PFID(mdt_object_fid(o)), rc);
1126 leh = (struct link_ea_header *) buf->lb_buf;
1127 lee = (struct link_ea_entry *)(leh + 1);
1128 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
1129 leh->leh_magic = LINK_EA_MAGIC;
1130 leh->leh_reccount = __swab32(leh->leh_reccount);
1131 leh->leh_len = __swab64(leh->leh_len);
1133 if (leh->leh_magic != LINK_EA_MAGIC)
1135 if (leh->leh_reccount == 0)
1138 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
1139 fid_be_to_cpu(pfid, pfid);
1144 int mdt_attr_get_pfid_name(struct mdt_thread_info *info, struct mdt_object *o,
1145 struct lu_fid *pfid, struct lu_name *lname)
1147 struct lu_buf *buf = &info->mti_buf;
1148 struct link_ea_header *leh;
1149 struct link_ea_entry *lee;
1153 buf->lb_buf = info->mti_xattr_buf;
1154 buf->lb_len = sizeof(info->mti_xattr_buf);
1155 rc = mo_xattr_get(info->mti_env, mdt_object_child(o), buf,
1157 if (rc == -ERANGE) {
1158 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
1159 buf->lb_buf = info->mti_big_lmm;
1160 buf->lb_len = info->mti_big_lmmsize;
1165 if (rc < sizeof(*leh)) {
1166 CERROR("short LinkEA on "DFID": rc = %d\n",
1167 PFID(mdt_object_fid(o)), rc);
1171 leh = (struct link_ea_header *)buf->lb_buf;
1172 lee = (struct link_ea_entry *)(leh + 1);
1173 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
1174 leh->leh_magic = LINK_EA_MAGIC;
1175 leh->leh_reccount = __swab32(leh->leh_reccount);
1176 leh->leh_len = __swab64(leh->leh_len);
1178 if (leh->leh_magic != LINK_EA_MAGIC)
1181 if (leh->leh_reccount == 0)
1184 linkea_entry_unpack(lee, &reclen, lname, pfid);
1189 int mdt_attr_get_complex(struct mdt_thread_info *info,
1190 struct mdt_object *o, struct md_attr *ma)
1192 const struct lu_env *env = info->mti_env;
1193 struct md_object *next = mdt_object_child(o);
1194 struct lu_buf *buf = &info->mti_buf;
1195 int need = ma->ma_need;
1202 if (mdt_object_exists(o) == 0)
1203 GOTO(out, rc = -ENOENT);
1204 mode = lu_object_attr(&next->mo_lu);
1206 if (need & MA_INODE) {
1207 ma->ma_need = MA_INODE;
1208 rc = mo_attr_get(env, next, ma);
1213 (void) mdt_get_som(info, o, ma);
1214 ma->ma_valid |= MA_INODE;
1217 if (need & MA_PFID) {
1218 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
1220 ma->ma_valid |= MA_PFID;
1221 /* ignore this error, parent fid is not mandatory */
1225 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
1226 rc = __mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
1231 if (need & MA_LMV && S_ISDIR(mode)) {
1232 rc = __mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
1237 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
1238 rc = __mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
1244 * In the handle of MA_INODE, we may already get the SOM attr.
1246 if (need & MA_SOM && S_ISREG(mode) && !(ma->ma_valid & MA_SOM)) {
1247 rc = mdt_get_som(info, o, ma);
1252 if (need & MA_HSM && S_ISREG(mode)) {
1253 buf->lb_buf = info->mti_xattr_buf;
1254 buf->lb_len = sizeof(info->mti_xattr_buf);
1255 BUILD_BUG_ON(sizeof(struct hsm_attrs) >
1256 sizeof(info->mti_xattr_buf));
1257 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
1258 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
1260 ma->ma_valid |= MA_HSM;
1261 else if (rc2 < 0 && rc2 != -ENODATA)
1262 GOTO(out, rc = rc2);
1265 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
1266 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
1267 buf->lb_buf = ma->ma_acl;
1268 buf->lb_len = ma->ma_acl_size;
1269 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
1271 ma->ma_acl_size = rc2;
1272 ma->ma_valid |= MA_ACL_DEF;
1273 } else if (rc2 == -ENODATA) {
1275 ma->ma_acl_size = 0;
1277 GOTO(out, rc = rc2);
1282 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = %#llx ma_lmm=%p\n",
1283 rc, ma->ma_valid, ma->ma_lmm);
1287 static int mdt_getattr_internal(struct mdt_thread_info *info,
1288 struct mdt_object *o, int ma_need)
1290 struct mdt_device *mdt = info->mti_mdt;
1291 struct md_object *next = mdt_object_child(o);
1292 const struct mdt_body *reqbody = info->mti_body;
1293 struct ptlrpc_request *req = mdt_info_req(info);
1294 struct md_attr *ma = &info->mti_attr;
1295 struct lu_attr *la = &ma->ma_attr;
1296 struct req_capsule *pill = info->mti_pill;
1297 const struct lu_env *env = info->mti_env;
1298 struct mdt_body *repbody;
1299 struct lu_buf *buffer = &info->mti_buf;
1300 struct obd_export *exp = info->mti_exp;
1301 ktime_t kstart = ktime_get();
1306 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
1307 RETURN(err_serious(-ENOMEM));
1309 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1313 if (mdt_object_remote(o)) {
1314 /* This object is located on remote node.*/
1315 /* Return -ENOTSUPP for old client */
1316 if (!mdt_is_dne_client(req->rq_export))
1317 GOTO(out, rc = -ENOTSUPP);
1319 repbody->mbo_fid1 = *mdt_object_fid(o);
1320 repbody->mbo_valid = OBD_MD_FLID | OBD_MD_MDS;
1324 if (reqbody->mbo_eadatasize > 0) {
1325 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
1326 if (buffer->lb_buf == NULL)
1327 GOTO(out, rc = -EPROTO);
1328 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD,
1331 buffer->lb_buf = NULL;
1333 ma_need &= ~(MA_LOV | MA_LMV);
1334 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
1335 mdt_obd_name(info->mti_mdt),
1336 req->rq_export->exp_client_uuid.uuid);
1339 /* from 2.12.58 intent_getattr pack default LMV in reply */
1340 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1341 ((reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA)) ==
1342 (OBD_MD_MEA | OBD_MD_DEFAULT_MEA)) &&
1343 req_capsule_has_field(&req->rq_pill, &RMF_DEFAULT_MDT_MD,
1345 ma->ma_lmv = buffer->lb_buf;
1346 ma->ma_lmv_size = buffer->lb_len;
1347 ma->ma_default_lmv = req_capsule_server_get(pill,
1348 &RMF_DEFAULT_MDT_MD);
1349 ma->ma_default_lmv_size = req_capsule_get_size(pill,
1350 &RMF_DEFAULT_MDT_MD,
1352 ma->ma_need = MA_INODE;
1353 if (ma->ma_lmv_size > 0)
1354 ma->ma_need |= MA_LMV;
1355 if (ma->ma_default_lmv_size > 0)
1356 ma->ma_need |= MA_LMV_DEF;
1357 } else if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1358 (reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
1359 /* If it is dir and client require MEA, then we got MEA */
1360 /* Assumption: MDT_MD size is enough for lmv size. */
1361 ma->ma_lmv = buffer->lb_buf;
1362 ma->ma_lmv_size = buffer->lb_len;
1363 ma->ma_need = MA_INODE;
1364 if (ma->ma_lmv_size > 0) {
1365 if (reqbody->mbo_valid & OBD_MD_MEA) {
1366 ma->ma_need |= MA_LMV;
1367 } else if (reqbody->mbo_valid & OBD_MD_DEFAULT_MEA) {
1368 ma->ma_need |= MA_LMV_DEF;
1369 ma->ma_default_lmv = buffer->lb_buf;
1371 ma->ma_default_lmv_size = buffer->lb_len;
1372 ma->ma_lmv_size = 0;
1376 ma->ma_lmm = buffer->lb_buf;
1377 ma->ma_lmm_size = buffer->lb_len;
1378 ma->ma_need = MA_INODE | MA_HSM;
1379 if (ma->ma_lmm_size > 0) {
1380 ma->ma_need |= MA_LOV;
1381 /* Older clients may crash if they getattr overstriped
1384 if (!exp_connect_overstriping(exp) &&
1385 mdt_lmm_is_overstriping(ma->ma_lmm))
1386 RETURN(-EOPNOTSUPP);
1390 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1391 reqbody->mbo_valid & OBD_MD_FLDIREA &&
1392 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
1393 /* get default stripe info for this dir. */
1394 ma->ma_need |= MA_LOV_DEF;
1396 ma->ma_need |= ma_need;
1398 rc = mdt_attr_get_complex(info, o, ma);
1400 CDEBUG_LIMIT(rc == -ENOENT ? D_OTHER : D_ERROR,
1401 "%s: getattr error for "DFID": rc = %d\n",
1402 mdt_obd_name(info->mti_mdt),
1403 PFID(mdt_object_fid(o)), rc);
1407 /* if file is released, check if a restore is running */
1408 if (ma->ma_valid & MA_HSM) {
1409 repbody->mbo_valid |= OBD_MD_TSTATE;
1410 if ((ma->ma_hsm.mh_flags & HS_RELEASED) &&
1411 mdt_hsm_restore_is_running(info, mdt_object_fid(o)))
1412 repbody->mbo_t_state = MS_RESTORE;
1415 if (unlikely(!(ma->ma_valid & MA_INODE)))
1418 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
1420 if (mdt_body_has_lov(la, reqbody)) {
1421 u32 stripe_count = 1;
1423 if (ma->ma_valid & MA_LOV) {
1424 LASSERT(ma->ma_lmm_size);
1425 repbody->mbo_eadatasize = ma->ma_lmm_size;
1426 if (S_ISDIR(la->la_mode))
1427 repbody->mbo_valid |= OBD_MD_FLDIREA;
1429 repbody->mbo_valid |= OBD_MD_FLEASIZE;
1430 mdt_dump_lmm(D_INFO, ma->ma_lmm, repbody->mbo_valid);
1432 if (ma->ma_valid & MA_LMV) {
1433 struct lmv_mds_md_v1 *lmv = &ma->ma_lmv->lmv_md_v1;
1434 u32 magic = le32_to_cpu(lmv->lmv_magic);
1436 /* Return -ENOTSUPP for old client */
1437 if (!mdt_is_striped_client(req->rq_export))
1440 LASSERT(S_ISDIR(la->la_mode));
1441 mdt_dump_lmv(D_INFO, ma->ma_lmv);
1442 repbody->mbo_eadatasize = ma->ma_lmv_size;
1443 repbody->mbo_valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
1445 stripe_count = le32_to_cpu(lmv->lmv_stripe_count);
1446 if (magic == LMV_MAGIC_STRIPE && lmv_is_restriping(lmv))
1447 mdt_restripe_migrate_add(info, o);
1448 else if (magic == LMV_MAGIC_V1 &&
1449 lmv_is_restriping(lmv))
1450 mdt_restripe_update_add(info, o);
1452 if (ma->ma_valid & MA_LMV_DEF) {
1453 /* Return -ENOTSUPP for old client */
1454 if (!mdt_is_striped_client(req->rq_export))
1456 LASSERT(S_ISDIR(la->la_mode));
1458 * when ll_dir_getstripe() gets default LMV, it
1459 * checks mbo_eadatasize.
1461 if (!(ma->ma_valid & MA_LMV))
1462 repbody->mbo_eadatasize =
1463 ma->ma_default_lmv_size;
1464 repbody->mbo_valid |= (OBD_MD_FLDIREA |
1465 OBD_MD_DEFAULT_MEA);
1468 "dirent count %llu stripe count %u MDT count %d\n",
1469 ma->ma_attr.la_dirent_count, stripe_count,
1470 atomic_read(&mdt->mdt_mds_mds_conns) + 1);
1471 if (ma->ma_attr.la_dirent_count != LU_DIRENT_COUNT_UNSET &&
1472 ma->ma_attr.la_dirent_count >
1473 mdt->mdt_restriper.mdr_dir_split_count &&
1474 !fid_is_root(mdt_object_fid(o)) &&
1475 mdt->mdt_enable_dir_auto_split &&
1476 !o->mot_restriping &&
1477 stripe_count < atomic_read(&mdt->mdt_mds_mds_conns) + 1)
1478 mdt_auto_split_add(info, o);
1479 } else if (S_ISLNK(la->la_mode) &&
1480 reqbody->mbo_valid & OBD_MD_LINKNAME) {
1481 buffer->lb_buf = ma->ma_lmm;
1482 /* eadatasize from client includes NULL-terminator, so
1483 * there is no need to read it */
1484 buffer->lb_len = reqbody->mbo_eadatasize - 1;
1485 rc = mo_readlink(env, next, buffer);
1486 if (unlikely(rc <= 0)) {
1487 CERROR("%s: readlink failed for "DFID": rc = %d\n",
1488 mdt_obd_name(info->mti_mdt),
1489 PFID(mdt_object_fid(o)), rc);
1492 int print_limit = min_t(int, PAGE_SIZE - 128, rc);
1494 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
1496 repbody->mbo_valid |= OBD_MD_LINKNAME;
1497 /* we need to report back size with NULL-terminator
1498 * because client expects that */
1499 repbody->mbo_eadatasize = rc + 1;
1500 if (repbody->mbo_eadatasize != reqbody->mbo_eadatasize)
1501 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
1502 "on "DFID ", expected %d\n",
1503 mdt_obd_name(info->mti_mdt),
1504 rc, PFID(mdt_object_fid(o)),
1505 reqbody->mbo_eadatasize - 1);
1506 /* NULL terminate */
1507 ((char *)ma->ma_lmm)[rc] = 0;
1509 /* If the total CDEBUG() size is larger than a page, it
1510 * will print a warning to the console, avoid this by
1511 * printing just the last part of the symlink. */
1512 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
1513 print_limit < rc ? "..." : "", print_limit,
1514 (char *)ma->ma_lmm + rc - print_limit, rc);
1519 if (reqbody->mbo_valid & OBD_MD_FLMODEASIZE) {
1520 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
1521 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
1522 CDEBUG(D_INODE, "changing the max MD size to %u\n",
1523 repbody->mbo_max_mdsize);
1526 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
1527 if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
1528 (reqbody->mbo_valid & OBD_MD_FLACL)) {
1529 struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
1530 if (IS_ERR(nodemap))
1531 RETURN(PTR_ERR(nodemap));
1533 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
1534 nodemap_putref(nodemap);
1540 mdt_counter_incr(req, LPROC_MDT_GETATTR,
1541 ktime_us_delta(ktime_get(), kstart));
1546 static int mdt_getattr(struct tgt_session_info *tsi)
1548 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1549 struct mdt_object *obj = info->mti_object;
1550 struct req_capsule *pill = info->mti_pill;
1551 struct mdt_body *reqbody;
1552 struct mdt_body *repbody;
1556 if (unlikely(info->mti_object == NULL))
1559 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1561 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1563 /* Special case for Data-on-MDT files to get data version */
1564 if (unlikely(reqbody->mbo_valid & OBD_MD_FLDATAVERSION)) {
1565 rc = mdt_data_version_get(tsi);
1569 /* Unlike intent case where we need to pre-fill out buffers early on
1570 * in intent policy for ldlm reasons, here we can have a much better
1571 * guess at EA size by just reading it from disk.
1572 * Exceptions are readdir and (missing) directory striping */
1574 if (reqbody->mbo_valid & OBD_MD_LINKNAME) {
1575 /* No easy way to know how long is the symlink, but it cannot
1576 * be more than PATH_MAX, so we allocate +1 */
1578 /* A special case for fs ROOT: getattr there might fetch
1579 * default EA for entire fs, not just for this dir!
1581 } else if (lu_fid_eq(mdt_object_fid(obj),
1582 &info->mti_mdt->mdt_md_root_fid) &&
1583 (reqbody->mbo_valid & OBD_MD_FLDIREA) &&
1584 (lustre_msg_get_opc(mdt_info_req(info)->rq_reqmsg) ==
1586 /* Should the default strping be bigger, mdt_fix_reply
1587 * will reallocate */
1588 rc = DEF_REP_MD_SIZE;
1590 /* Read the actual EA size from disk */
1591 rc = mdt_attr_get_eabuf_size(info, obj);
1595 GOTO(out, rc = err_serious(rc));
1597 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, rc);
1599 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
1600 * by default. If the target object has more ACL entries, then
1601 * enlarge the buffer when necessary. */
1602 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
1603 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
1605 rc = req_capsule_server_pack(pill);
1606 if (unlikely(rc != 0))
1607 GOTO(out, rc = err_serious(rc));
1609 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1610 LASSERT(repbody != NULL);
1611 repbody->mbo_eadatasize = 0;
1612 repbody->mbo_aclsize = 0;
1614 rc = mdt_check_ucred(info);
1616 GOTO(out_shrink, rc);
1618 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1620 rc = mdt_getattr_internal(info, obj, 0);
1623 mdt_client_compatibility(info);
1624 rc2 = mdt_fix_reply(info);
1628 mdt_thread_info_fini(info);
1633 * Handler of layout intent RPC requiring the layout modification
1635 * \param[in] info thread environment
1636 * \param[in] obj object
1637 * \param[out] lhc object ldlm lock handle
1638 * \param[in] layout layout change descriptor
1640 * \retval 0 on success
1641 * \retval < 0 error code
1643 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
1644 struct mdt_lock_handle *lhc,
1645 struct md_layout_change *layout)
1651 if (!mdt_object_exists(obj))
1654 if (!S_ISREG(lu_object_attr(&obj->mot_obj)))
1657 rc = mo_permission(info->mti_env, NULL, mdt_object_child(obj), NULL,
1662 rc = mdt_check_resent_lock(info, obj, lhc);
1668 __u64 lockpart = MDS_INODELOCK_LAYOUT;
1670 /* take layout lock to prepare layout change */
1671 if (layout->mlc_opc == MD_LAYOUT_WRITE)
1672 lockpart |= MDS_INODELOCK_UPDATE;
1674 mdt_lock_handle_init(lhc);
1675 mdt_lock_reg_init(lhc, LCK_EX);
1676 rc = mdt_reint_object_lock(info, obj, lhc, lockpart, false);
1681 mutex_lock(&obj->mot_som_mutex);
1682 rc = mo_layout_change(info->mti_env, mdt_object_child(obj), layout);
1683 mutex_unlock(&obj->mot_som_mutex);
1686 mdt_object_unlock(info, obj, lhc, 1);
1692 * Exchange MOF_LOV_CREATED flags between two objects after a
1693 * layout swap. No assumption is made on whether o1 or o2 have
1694 * created objects or not.
1696 * \param[in,out] o1 First swap layout object
1697 * \param[in,out] o2 Second swap layout object
1699 static void mdt_swap_lov_flag(struct mdt_object *o1, struct mdt_object *o2)
1701 unsigned int o1_lov_created = o1->mot_lov_created;
1703 mutex_lock(&o1->mot_lov_mutex);
1704 mutex_lock(&o2->mot_lov_mutex);
1706 o1->mot_lov_created = o2->mot_lov_created;
1707 o2->mot_lov_created = o1_lov_created;
1709 mutex_unlock(&o2->mot_lov_mutex);
1710 mutex_unlock(&o1->mot_lov_mutex);
1713 static int mdt_swap_layouts(struct tgt_session_info *tsi)
1715 struct mdt_thread_info *info;
1716 struct ptlrpc_request *req = tgt_ses_req(tsi);
1717 struct obd_export *exp = req->rq_export;
1718 struct mdt_object *o1, *o2, *o;
1719 struct mdt_lock_handle *lh1, *lh2;
1720 struct mdc_swap_layouts *msl;
1724 /* client does not support layout lock, so layout swaping
1726 * FIXME: there is a problem for old clients which don't support
1727 * layout lock yet. If those clients have already opened the file
1728 * they won't be notified at all so that old layout may still be
1729 * used to do IO. This can be fixed after file release is landed by
1730 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1731 if (!exp_connect_layout(exp))
1732 RETURN(-EOPNOTSUPP);
1734 info = tsi2mdt_info(tsi);
1735 if (unlikely(info->mti_object == NULL))
1738 if (info->mti_dlm_req != NULL)
1739 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
1741 o1 = info->mti_object;
1742 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1743 &info->mti_body->mbo_fid2);
1745 GOTO(out, rc = PTR_ERR(o));
1747 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1748 GOTO(put, rc = -ENOENT);
1750 rc = lu_fid_cmp(&info->mti_body->mbo_fid1, &info->mti_body->mbo_fid2);
1751 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1757 /* permission check. Make sure the calling process having permission
1758 * to write both files. */
1759 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1764 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1769 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1771 GOTO(put, rc = -EPROTO);
1773 lh1 = &info->mti_lh[MDT_LH_NEW];
1774 mdt_lock_reg_init(lh1, LCK_EX);
1775 lh2 = &info->mti_lh[MDT_LH_OLD];
1776 mdt_lock_reg_init(lh2, LCK_EX);
1778 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1779 MDS_INODELOCK_XATTR);
1783 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1784 MDS_INODELOCK_XATTR);
1788 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1789 mdt_object_child(o2), msl->msl_flags);
1793 mdt_swap_lov_flag(o1, o2);
1796 mdt_object_unlock(info, o2, lh2, rc);
1798 mdt_object_unlock(info, o1, lh1, rc);
1800 mdt_object_put(info->mti_env, o);
1802 mdt_thread_info_fini(info);
1806 static int mdt_raw_lookup(struct mdt_thread_info *info,
1807 struct mdt_object *parent,
1808 const struct lu_name *lname,
1809 struct ldlm_reply *ldlm_rep)
1811 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1815 LASSERT(!info->mti_cross_ref);
1817 /* Only got the fid of this obj by name */
1818 fid_zero(child_fid);
1819 rc = mdo_lookup(info->mti_env, mdt_object_child(info->mti_object),
1820 lname, child_fid, &info->mti_spec);
1822 struct mdt_body *repbody;
1824 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1825 repbody->mbo_fid1 = *child_fid;
1826 repbody->mbo_valid = OBD_MD_FLID;
1827 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1828 } else if (rc == -ENOENT) {
1829 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1836 * UPDATE lock should be taken against parent, and be released before exit;
1837 * child_bits lock should be taken against child, and be returned back:
1838 * (1)normal request should release the child lock;
1839 * (2)intent request will grant the lock to client.
1841 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1842 struct mdt_lock_handle *lhc,
1844 struct ldlm_reply *ldlm_rep)
1846 struct ptlrpc_request *req = mdt_info_req(info);
1847 struct mdt_body *reqbody = NULL;
1848 struct mdt_object *parent = info->mti_object;
1849 struct mdt_object *child = NULL;
1850 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1851 struct lu_name *lname = NULL;
1852 struct mdt_lock_handle *lhp = NULL;
1853 struct ldlm_lock *lock;
1854 struct req_capsule *pill = info->mti_pill;
1862 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1863 LASSERT(ergo(is_resent,
1864 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1869 if (info->mti_cross_ref) {
1870 /* Only getattr on the child. Parent is on another node. */
1871 mdt_set_disposition(info, ldlm_rep,
1872 DISP_LOOKUP_EXECD | DISP_LOOKUP_POS);
1874 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1876 PFID(mdt_object_fid(child)), ldlm_rep);
1878 rc = mdt_check_resent_lock(info, child, lhc);
1881 } else if (rc > 0) {
1882 mdt_lock_handle_init(lhc);
1883 mdt_lock_reg_init(lhc, LCK_PR);
1886 * Object's name entry is on another MDS, it will
1887 * request PERM lock only because LOOKUP lock is owned
1888 * by the MDS where name entry resides.
1890 * TODO: it should try layout lock too. - Jinshan
1892 child_bits &= ~(MDS_INODELOCK_LOOKUP |
1893 MDS_INODELOCK_LAYOUT);
1894 child_bits |= MDS_INODELOCK_PERM;
1896 rc = mdt_object_lock(info, child, lhc, child_bits);
1901 /* Finally, we can get attr for child. */
1902 if (!mdt_object_exists(child)) {
1903 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
1905 "remote object doesn't exist.");
1906 mdt_object_unlock(info, child, lhc, 1);
1910 rc = mdt_getattr_internal(info, child, 0);
1911 if (unlikely(rc != 0)) {
1912 mdt_object_unlock(info, child, lhc, 1);
1916 rc = mdt_pack_secctx_in_reply(info, child);
1918 mdt_object_unlock(info, child, lhc, 1);
1922 rc = mdt_pack_encctx_in_reply(info, child);
1924 mdt_object_unlock(info, child, lhc, 1);
1928 lname = &info->mti_name;
1929 mdt_name_unpack(pill, &RMF_NAME, lname, MNF_FIX_ANON);
1931 if (lu_name_is_valid(lname)) {
1932 if (mdt_object_remote(parent)) {
1933 CERROR("%s: parent "DFID" is on remote target\n",
1934 mdt_obd_name(info->mti_mdt),
1935 PFID(mdt_object_fid(parent)));
1939 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", "
1940 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1941 PNAME(lname), ldlm_rep);
1943 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1944 if (unlikely(reqbody == NULL))
1945 RETURN(err_serious(-EPROTO));
1947 *child_fid = reqbody->mbo_fid2;
1948 if (unlikely(!fid_is_sane(child_fid)))
1949 RETURN(err_serious(-EINVAL));
1951 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
1952 mdt_object_get(info->mti_env, parent);
1955 child = mdt_object_find(info->mti_env, info->mti_mdt,
1958 RETURN(PTR_ERR(child));
1961 if (mdt_object_remote(child)) {
1962 CERROR("%s: child "DFID" is on remote target\n",
1963 mdt_obd_name(info->mti_mdt),
1964 PFID(mdt_object_fid(child)));
1965 GOTO(out_child, rc = -EPROTO);
1968 /* don't fetch LOOKUP lock if it's remote object */
1969 rc = mdt_is_remote_object(info, parent, child);
1971 GOTO(out_child, rc);
1973 child_bits &= ~MDS_INODELOCK_LOOKUP;
1975 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1977 PFID(mdt_object_fid(parent)),
1978 PFID(&reqbody->mbo_fid2), ldlm_rep);
1981 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1983 if (unlikely(!mdt_object_exists(parent)) && lu_name_is_valid(lname)) {
1984 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1986 "Parent doesn't exist!");
1987 GOTO(out_child, rc = -ESTALE);
1990 if (lu_name_is_valid(lname)) {
1991 /* Always allow to lookup ".." */
1992 if (unlikely(lname->ln_namelen == 2 &&
1993 lname->ln_name[0] == '.' &&
1994 lname->ln_name[1] == '.'))
1995 info->mti_spec.sp_permitted = 1;
1997 if (info->mti_body->mbo_valid == OBD_MD_FLID) {
1998 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
2003 /* step 1: lock parent only if parent is a directory */
2004 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
2005 lhp = &info->mti_lh[MDT_LH_PARENT];
2006 mdt_lock_pdo_init(lhp, LCK_PR, lname);
2007 rc = mdt_object_lock(info, parent, lhp,
2008 MDS_INODELOCK_UPDATE);
2009 if (unlikely(rc != 0))
2013 /* step 2: lookup child's fid by name */
2014 fid_zero(child_fid);
2015 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
2016 child_fid, &info->mti_spec);
2018 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
2021 GOTO(unlock_parent, rc);
2023 child = mdt_object_find(info->mti_env, info->mti_mdt,
2025 if (unlikely(IS_ERR(child)))
2026 GOTO(unlock_parent, rc = PTR_ERR(child));
2029 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
2031 /* step 3: lock child regardless if it is local or remote. */
2034 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout * 2);
2035 if (!mdt_object_exists(child)) {
2036 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
2038 "Object doesn't exist!");
2039 GOTO(out_child, rc = -ENOENT);
2042 rc = mdt_check_resent_lock(info, child, lhc);
2044 GOTO(out_child, rc);
2045 } else if (rc > 0) {
2046 mdt_lock_handle_init(lhc);
2047 mdt_lock_reg_init(lhc, LCK_PR);
2049 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
2050 !mdt_object_remote(child)) {
2051 struct md_attr *ma = &info->mti_attr;
2054 ma->ma_need = MA_INODE;
2055 rc = mdt_attr_get_complex(info, child, ma);
2056 if (unlikely(rc != 0))
2057 GOTO(out_child, rc);
2059 /* If the file has not been changed for some time, we
2060 * return not only a LOOKUP lock, but also an UPDATE
2061 * lock and this might save us RPC on later STAT. For
2062 * directories, it also let negative dentry cache start
2063 * working for this dir. */
2064 if (ma->ma_valid & MA_INODE &&
2065 ma->ma_attr.la_valid & LA_CTIME &&
2066 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
2067 ma->ma_attr.la_ctime < ktime_get_real_seconds())
2068 child_bits |= MDS_INODELOCK_UPDATE;
2071 /* layout lock must be granted in a best-effort way
2072 * for IT operations */
2073 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
2074 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
2075 !mdt_object_remote(child) && ldlm_rep != NULL) {
2076 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
2077 exp_connect_layout(info->mti_exp)) {
2078 /* try to grant layout lock for regular file. */
2079 try_bits = MDS_INODELOCK_LAYOUT;
2081 /* Acquire DOM lock in advance for data-on-mdt file */
2082 if (child != parent)
2083 try_bits |= MDS_INODELOCK_DOM;
2086 if (try_bits != 0) {
2087 /* try layout lock, it may fail to be granted due to
2088 * contention at LOOKUP or UPDATE */
2089 rc = mdt_object_lock_try(info, child, lhc, &child_bits,
2091 if (child_bits & MDS_INODELOCK_LAYOUT)
2094 /* Do not enqueue the UPDATE lock from MDT(cross-MDT),
2095 * client will enqueue the lock to the remote MDT */
2096 if (mdt_object_remote(child))
2097 child_bits &= ~MDS_INODELOCK_UPDATE;
2098 rc = mdt_object_lock(info, child, lhc, child_bits);
2100 if (unlikely(rc != 0))
2101 GOTO(out_child, rc);
2104 /* finally, we can get attr for child. */
2105 rc = mdt_getattr_internal(info, child, ma_need);
2106 if (unlikely(rc != 0)) {
2107 mdt_object_unlock(info, child, lhc, 1);
2108 GOTO(out_child, rc);
2111 rc = mdt_pack_secctx_in_reply(info, child);
2113 mdt_object_unlock(info, child, lhc, 1);
2114 GOTO(out_child, rc);
2117 rc = mdt_pack_encctx_in_reply(info, child);
2119 mdt_object_unlock(info, child, lhc, 1);
2120 GOTO(out_child, rc);
2123 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
2125 /* Debugging code. */
2126 LDLM_DEBUG(lock, "Returning lock to client");
2127 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
2128 &lock->l_resource->lr_name),
2129 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
2130 PLDLMRES(lock->l_resource),
2131 PFID(mdt_object_fid(child)));
2133 if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_PTLRPC_ENQ_RESEND))) {
2134 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
2135 OBD_FAIL_TIMEOUT(OBD_FAIL_PTLRPC_ENQ_RESEND,
2137 req->rq_arrival_time.tv_sec +
2139 /* Put the lock to the waiting list and force the cancel */
2140 ldlm_set_ast_sent(lock);
2143 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
2144 !mdt_object_remote(child) && child != parent) {
2145 mdt_object_put(info->mti_env, child);
2146 rc = mdt_pack_size2body(info, child_fid,
2148 if (rc != 0 && child_bits & MDS_INODELOCK_DOM) {
2149 /* DOM lock was taken in advance but this is
2150 * not DoM file. Drop the lock.
2152 lock_res_and_lock(lock);
2153 ldlm_inodebits_drop(lock, MDS_INODELOCK_DOM);
2154 unlock_res_and_lock(lock);
2156 LDLM_LOCK_PUT(lock);
2157 GOTO(unlock_parent, rc = 0);
2159 LDLM_LOCK_PUT(lock);
2165 mdt_object_put(info->mti_env, child);
2168 mdt_object_unlock(info, parent, lhp, 1);
2172 /* normal handler: should release the child lock */
2173 static int mdt_getattr_name(struct tgt_session_info *tsi)
2175 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2176 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
2177 struct mdt_body *reqbody;
2178 struct mdt_body *repbody;
2183 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
2184 LASSERT(reqbody != NULL);
2185 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2186 LASSERT(repbody != NULL);
2188 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
2189 repbody->mbo_eadatasize = 0;
2190 repbody->mbo_aclsize = 0;
2192 rc = mdt_init_ucred(info, reqbody);
2194 GOTO(out_shrink, rc);
2196 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
2197 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
2198 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
2199 lhc->mlh_reg_lh.cookie = 0;
2201 mdt_exit_ucred(info);
2204 mdt_client_compatibility(info);
2205 rc2 = mdt_fix_reply(info);
2208 mdt_thread_info_fini(info);
2212 static int mdt_rmfid_unlink(struct mdt_thread_info *info,
2213 const struct lu_fid *pfid,
2214 const struct lu_name *name,
2215 struct mdt_object *obj, s64 ctime)
2217 struct lu_fid *child_fid = &info->mti_tmp_fid1;
2218 struct ldlm_enqueue_info *einfo = &info->mti_einfo[0];
2219 struct mdt_device *mdt = info->mti_mdt;
2220 struct md_attr *ma = &info->mti_attr;
2221 struct mdt_lock_handle *parent_lh;
2222 struct mdt_lock_handle *child_lh;
2223 struct mdt_object *pobj;
2224 bool cos_incompat = false;
2228 pobj = mdt_object_find(info->mti_env, mdt, pfid);
2230 GOTO(out, rc = PTR_ERR(pobj));
2232 parent_lh = &info->mti_lh[MDT_LH_PARENT];
2233 mdt_lock_pdo_init(parent_lh, LCK_PW, name);
2234 rc = mdt_object_lock(info, pobj, parent_lh, MDS_INODELOCK_UPDATE);
2236 GOTO(put_parent, rc);
2238 if (mdt_object_remote(pobj))
2239 cos_incompat = true;
2241 rc = mdo_lookup(info->mti_env, mdt_object_child(pobj),
2242 name, child_fid, &info->mti_spec);
2244 GOTO(unlock_parent, rc);
2246 if (!lu_fid_eq(child_fid, mdt_object_fid(obj)))
2247 GOTO(unlock_parent, rc = -EREMCHG);
2249 child_lh = &info->mti_lh[MDT_LH_CHILD];
2250 mdt_lock_reg_init(child_lh, LCK_EX);
2251 rc = mdt_reint_striped_lock(info, obj, child_lh,
2252 MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE,
2253 einfo, cos_incompat);
2255 GOTO(unlock_parent, rc);
2257 if (atomic_read(&obj->mot_open_count)) {
2258 CDEBUG(D_OTHER, "object "DFID" open, skip\n",
2259 PFID(mdt_object_fid(obj)));
2260 GOTO(unlock_child, rc = -EBUSY);
2264 ma->ma_valid = MA_INODE;
2265 ma->ma_attr.la_valid = LA_CTIME;
2266 ma->ma_attr.la_ctime = ctime;
2268 mutex_lock(&obj->mot_lov_mutex);
2270 rc = mdo_unlink(info->mti_env, mdt_object_child(pobj),
2271 mdt_object_child(obj), name, ma, 0);
2273 mutex_unlock(&obj->mot_lov_mutex);
2276 mdt_reint_striped_unlock(info, obj, child_lh, einfo, 1);
2278 mdt_object_unlock(info, pobj, parent_lh, 1);
2280 mdt_object_put(info->mti_env, pobj);
2285 static int mdt_rmfid_check_permission(struct mdt_thread_info *info,
2286 struct mdt_object *obj)
2288 struct lu_ucred *uc = lu_ucred(info->mti_env);
2289 struct md_attr *ma = &info->mti_attr;
2290 struct lu_attr *la = &ma->ma_attr;
2294 ma->ma_need = MA_INODE;
2295 rc = mo_attr_get(info->mti_env, mdt_object_child(obj), ma);
2299 if (la->la_flags & LUSTRE_IMMUTABLE_FL)
2302 if (md_capable(uc, CAP_DAC_OVERRIDE))
2304 if (uc->uc_fsuid == la->la_uid) {
2305 if ((la->la_mode & S_IWUSR) == 0)
2307 } else if (uc->uc_fsgid == la->la_gid) {
2308 if ((la->la_mode & S_IWGRP) == 0)
2310 } else if ((la->la_mode & S_IWOTH) == 0) {
2318 static int mdt_rmfid_one(struct mdt_thread_info *info, struct lu_fid *fid,
2321 struct mdt_device *mdt = info->mti_mdt;
2322 struct mdt_object *obj = NULL;
2323 struct linkea_data ldata = { NULL };
2324 struct lu_buf *buf = &info->mti_big_buf;
2325 struct lu_name *name = &info->mti_name;
2326 struct lu_fid *pfid = &info->mti_tmp_fid1;
2327 struct link_ea_header *leh;
2328 struct link_ea_entry *lee;
2329 int reclen, count, rc = 0;
2332 if (!fid_is_sane(fid))
2333 GOTO(out, rc = -EINVAL);
2335 if (!fid_is_namespace_visible(fid))
2336 GOTO(out, rc = -EINVAL);
2338 obj = mdt_object_find(info->mti_env, mdt, fid);
2340 GOTO(out, rc = PTR_ERR(obj));
2342 if (mdt_object_remote(obj))
2343 GOTO(out, rc = -EREMOTE);
2344 if (!mdt_object_exists(obj) || lu_object_is_dying(&obj->mot_header))
2345 GOTO(out, rc = -ENOENT);
2347 rc = mdt_rmfid_check_permission(info, obj);
2352 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
2354 GOTO(out, rc = -ENOMEM);
2357 rc = mdt_links_read(info, obj, &ldata);
2362 lee = (struct link_ea_entry *)(leh + 1);
2363 for (count = 0; count < leh->leh_reccount; count++) {
2364 /* remove every hardlink */
2365 linkea_entry_unpack(lee, &reclen, name, pfid);
2366 lee = (struct link_ea_entry *) ((char *)lee + reclen);
2367 rc = mdt_rmfid_unlink(info, pfid, name, obj, ctime);
2373 if (obj && !IS_ERR(obj))
2374 mdt_object_put(info->mti_env, obj);
2375 if (info->mti_big_buf.lb_buf)
2376 lu_buf_free(&info->mti_big_buf);
2381 static int mdt_rmfid(struct tgt_session_info *tsi)
2383 struct mdt_thread_info *mti = tsi2mdt_info(tsi);
2384 struct mdt_body *reqbody;
2385 struct lu_fid *fids, *rfids;
2391 reqbody = req_capsule_client_get(tsi->tsi_pill, &RMF_MDT_BODY);
2392 if (reqbody == NULL)
2394 bufsize = req_capsule_get_size(tsi->tsi_pill, &RMF_FID_ARRAY,
2396 nr = bufsize / sizeof(struct lu_fid);
2397 if (nr * sizeof(struct lu_fid) != bufsize)
2399 req_capsule_set_size(tsi->tsi_pill, &RMF_RCS,
2400 RCL_SERVER, nr * sizeof(__u32));
2401 req_capsule_set_size(tsi->tsi_pill, &RMF_FID_ARRAY,
2402 RCL_SERVER, nr * sizeof(struct lu_fid));
2403 rc = req_capsule_server_pack(tsi->tsi_pill);
2405 GOTO(out, rc = err_serious(rc));
2406 fids = req_capsule_client_get(tsi->tsi_pill, &RMF_FID_ARRAY);
2409 rcs = req_capsule_server_get(tsi->tsi_pill, &RMF_RCS);
2411 rfids = req_capsule_server_get(tsi->tsi_pill, &RMF_FID_ARRAY);
2414 mdt_init_ucred(mti, reqbody);
2415 for (i = 0; i < nr; i++) {
2417 rcs[i] = mdt_rmfid_one(mti, fids + i, reqbody->mbo_ctime);
2419 mdt_exit_ucred(mti);
2425 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2426 void *karg, void __user *uarg);
2428 static int mdt_set_info(struct tgt_session_info *tsi)
2430 struct ptlrpc_request *req = tgt_ses_req(tsi);
2433 int keylen, vallen, rc = 0;
2437 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
2439 DEBUG_REQ(D_HA, req, "no set_info key");
2440 RETURN(err_serious(-EFAULT));
2443 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
2446 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
2448 DEBUG_REQ(D_HA, req, "no set_info val");
2449 RETURN(err_serious(-EFAULT));
2452 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
2455 /* Swab any part of val you need to here */
2456 if (KEY_IS(KEY_READ_ONLY)) {
2457 spin_lock(&req->rq_export->exp_lock);
2459 *exp_connect_flags_ptr(req->rq_export) |=
2462 *exp_connect_flags_ptr(req->rq_export) &=
2463 ~OBD_CONNECT_RDONLY;
2464 spin_unlock(&req->rq_export->exp_lock);
2465 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2466 struct changelog_setinfo *cs = val;
2468 if (vallen != sizeof(*cs)) {
2469 CERROR("%s: bad changelog_clear setinfo size %d\n",
2470 tgt_name(tsi->tsi_tgt), vallen);
2473 if (req_capsule_req_need_swab(&req->rq_pill)) {
2474 __swab64s(&cs->cs_recno);
2475 __swab32s(&cs->cs_id);
2478 if (!mdt_is_rootadmin(tsi2mdt_info(tsi)))
2480 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
2482 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
2484 obd_export_evict_by_nid(req->rq_export->exp_obd, val);
2491 static int mdt_readpage(struct tgt_session_info *tsi)
2493 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
2494 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
2495 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
2496 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
2497 struct mdt_body *repbody;
2503 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
2504 RETURN(err_serious(-ENOMEM));
2506 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
2507 if (repbody == NULL || reqbody == NULL)
2508 RETURN(err_serious(-EFAULT));
2511 * prepare @rdpg before calling lower layers and transfer itself. Here
2512 * reqbody->size contains offset of where to start to read and
2513 * reqbody->nlink contains number bytes to read.
2515 rdpg->rp_hash = reqbody->mbo_size;
2516 if (rdpg->rp_hash != reqbody->mbo_size) {
2517 CERROR("Invalid hash: %#llx != %#llx\n",
2518 rdpg->rp_hash, reqbody->mbo_size);
2522 rdpg->rp_attrs = reqbody->mbo_mode;
2523 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
2524 rdpg->rp_attrs |= LUDA_64BITHASH;
2525 rdpg->rp_count = min_t(unsigned int, reqbody->mbo_nlink,
2526 exp_max_brw_size(tsi->tsi_exp));
2527 rdpg->rp_npages = (rdpg->rp_count + PAGE_SIZE - 1) >>
2529 OBD_ALLOC_PTR_ARRAY_LARGE(rdpg->rp_pages, rdpg->rp_npages);
2530 if (rdpg->rp_pages == NULL)
2533 for (i = 0; i < rdpg->rp_npages; ++i) {
2534 rdpg->rp_pages[i] = alloc_page(GFP_NOFS);
2535 if (rdpg->rp_pages[i] == NULL)
2536 GOTO(free_rdpg, rc = -ENOMEM);
2539 /* call lower layers to fill allocated pages with directory data */
2540 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
2542 GOTO(free_rdpg, rc);
2544 /* send pages to client */
2545 rc = tgt_sendpage(tsi, rdpg, rc);
2550 for (i = 0; i < rdpg->rp_npages; i++)
2551 if (rdpg->rp_pages[i] != NULL)
2552 __free_page(rdpg->rp_pages[i]);
2553 OBD_FREE_PTR_ARRAY_LARGE(rdpg->rp_pages, rdpg->rp_npages);
2555 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
2561 static int mdt_fix_attr_ucred(struct mdt_thread_info *info, __u32 op)
2563 struct lu_ucred *uc = mdt_ucred_check(info);
2564 struct lu_attr *attr = &info->mti_attr.ma_attr;
2569 if (op != REINT_SETATTR) {
2570 if ((attr->la_valid & LA_UID) && (attr->la_uid != -1))
2571 attr->la_uid = uc->uc_fsuid;
2572 /* for S_ISGID, inherit gid from his parent, such work will be
2573 * done in cmm/mdd layer, here set all cases as uc->uc_fsgid. */
2574 if ((attr->la_valid & LA_GID) && (attr->la_gid != -1))
2575 attr->la_gid = uc->uc_fsgid;
2581 static inline bool mdt_is_readonly_open(struct mdt_thread_info *info, __u32 op)
2583 return op == REINT_OPEN &&
2584 !(info->mti_spec.sp_cr_flags & (MDS_FMODE_WRITE | MDS_OPEN_CREAT));
2587 static void mdt_preset_secctx_size(struct mdt_thread_info *info)
2589 struct req_capsule *pill = info->mti_pill;
2591 if (req_capsule_has_field(pill, &RMF_FILE_SECCTX,
2593 req_capsule_has_field(pill, &RMF_FILE_SECCTX_NAME,
2595 if (req_capsule_get_size(pill, &RMF_FILE_SECCTX_NAME,
2597 /* pre-set size in server part with max size */
2598 req_capsule_set_size(pill, &RMF_FILE_SECCTX,
2600 OBD_MAX_DEFAULT_EA_SIZE);
2602 req_capsule_set_size(pill, &RMF_FILE_SECCTX,
2607 static void mdt_preset_encctx_size(struct mdt_thread_info *info)
2609 struct req_capsule *pill = info->mti_pill;
2611 if (req_capsule_has_field(pill, &RMF_FILE_ENCCTX,
2613 /* pre-set size in server part with max size */
2614 req_capsule_set_size(pill, &RMF_FILE_ENCCTX,
2616 info->mti_mdt->mdt_max_mdsize);
2619 static int mdt_reint_internal(struct mdt_thread_info *info,
2620 struct mdt_lock_handle *lhc,
2623 struct req_capsule *pill = info->mti_pill;
2624 struct mdt_body *repbody;
2629 rc = mdt_reint_unpack(info, op);
2631 CERROR("Can't unpack reint, rc %d\n", rc);
2632 RETURN(err_serious(rc));
2636 /* check if the file system is set to readonly. O_RDONLY open
2637 * is still allowed even the file system is set to readonly mode */
2638 if (mdt_rdonly(info->mti_exp) && !mdt_is_readonly_open(info, op))
2639 RETURN(err_serious(-EROFS));
2641 /* for replay (no_create) lmm is not needed, client has it already */
2642 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2643 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2646 /* llog cookies are always 0, the field is kept for compatibility */
2647 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2648 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
2650 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
2651 * by default. If the target object has more ACL entries, then
2652 * enlarge the buffer when necessary. */
2653 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
2654 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
2655 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
2657 mdt_preset_secctx_size(info);
2658 mdt_preset_encctx_size(info);
2660 rc = req_capsule_server_pack(pill);
2662 CERROR("Can't pack response, rc %d\n", rc);
2663 RETURN(err_serious(rc));
2666 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
2667 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
2669 repbody->mbo_eadatasize = 0;
2670 repbody->mbo_aclsize = 0;
2673 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
2675 /* for replay no cookkie / lmm need, because client have this already */
2676 if (info->mti_spec.no_create)
2677 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2678 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
2680 rc = mdt_init_ucred_reint(info);
2682 GOTO(out_shrink, rc);
2684 rc = mdt_fix_attr_ucred(info, op);
2686 GOTO(out_ucred, rc = err_serious(rc));
2688 rc = mdt_check_resent(info, mdt_reconstruct, lhc);
2690 GOTO(out_ucred, rc);
2691 } else if (rc == 1) {
2692 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt");
2693 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
2694 GOTO(out_ucred, rc);
2696 rc = mdt_reint_rec(info, lhc);
2699 mdt_exit_ucred(info);
2701 mdt_client_compatibility(info);
2703 rc2 = mdt_fix_reply(info);
2708 * Data-on-MDT optimization - read data along with OPEN and return it
2709 * in reply when possible.
2711 if (rc == 0 && op == REINT_OPEN && !req_is_replay(pill->rc_req))
2712 rc = mdt_dom_read_on_open(info, info->mti_mdt,
2718 static long mdt_reint_opcode(struct ptlrpc_request *req,
2719 const struct req_format **fmt)
2721 struct mdt_device *mdt;
2722 struct mdt_rec_reint *rec;
2725 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
2727 opc = rec->rr_opcode;
2728 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
2729 if (opc < REINT_MAX && fmt[opc] != NULL)
2730 req_capsule_extend(&req->rq_pill, fmt[opc]);
2732 mdt = mdt_exp2dev(req->rq_export);
2733 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
2734 " rc = %d\n", req->rq_export->exp_obd->obd_name,
2735 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
2736 opc = err_serious(-EFAULT);
2739 opc = err_serious(-EFAULT);
2744 static int mdt_reint(struct tgt_session_info *tsi)
2748 static const struct req_format *reint_fmts[REINT_MAX] = {
2749 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
2750 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
2751 [REINT_LINK] = &RQF_MDS_REINT_LINK,
2752 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
2753 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
2754 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
2755 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
2756 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
2757 [REINT_MIGRATE] = &RQF_MDS_REINT_MIGRATE,
2758 [REINT_RESYNC] = &RQF_MDS_REINT_RESYNC,
2763 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
2765 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2767 * No lock possible here from client to pass it to reint code
2770 rc = mdt_reint_internal(info, NULL, opc);
2771 mdt_thread_info_fini(info);
2776 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
2780 /* this should sync the whole device */
2781 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
2783 struct dt_device *dt = mdt->mdt_bottom;
2787 rc = dt->dd_ops->dt_sync(env, dt);
2791 /* this should sync this object */
2792 static int mdt_object_sync(const struct lu_env *env, struct obd_export *exp,
2793 struct mdt_object *mo)
2799 if (!mdt_object_exists(mo)) {
2800 CWARN("%s: non existing object "DFID": rc = %d\n",
2801 exp->exp_obd->obd_name, PFID(mdt_object_fid(mo)),
2806 if (S_ISREG(lu_object_attr(&mo->mot_obj))) {
2807 struct lu_target *tgt = tgt_ses_info(env)->tsi_tgt;
2808 dt_obj_version_t version;
2810 version = dt_version_get(env, mdt_obj2dt(mo));
2811 if (version > tgt->lut_obd->obd_last_committed)
2812 rc = mo_object_sync(env, mdt_object_child(mo));
2814 rc = mo_object_sync(env, mdt_object_child(mo));
2820 static int mdt_sync(struct tgt_session_info *tsi)
2822 struct ptlrpc_request *req = tgt_ses_req(tsi);
2823 struct req_capsule *pill = tsi->tsi_pill;
2824 struct mdt_body *body;
2825 ktime_t kstart = ktime_get();
2830 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
2831 RETURN(err_serious(-ENOMEM));
2833 if (fid_seq(&tsi->tsi_mdt_body->mbo_fid1) == 0) {
2834 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
2836 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2838 if (unlikely(info->mti_object == NULL))
2841 /* sync an object */
2842 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp,
2845 const struct lu_fid *fid;
2846 struct lu_attr *la = &info->mti_attr.ma_attr;
2848 info->mti_attr.ma_need = MA_INODE;
2849 info->mti_attr.ma_valid = 0;
2850 rc = mdt_attr_get_complex(info, info->mti_object,
2853 body = req_capsule_server_get(pill,
2855 fid = mdt_object_fid(info->mti_object);
2856 mdt_pack_attr2body(info, body, la, fid);
2859 mdt_thread_info_fini(info);
2862 mdt_counter_incr(req, LPROC_MDT_SYNC,
2863 ktime_us_delta(ktime_get(), kstart));
2868 static int mdt_data_sync(struct tgt_session_info *tsi)
2870 struct mdt_thread_info *info;
2871 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2872 struct ost_body *body = tsi->tsi_ost_body;
2873 struct ost_body *repbody;
2874 struct mdt_object *mo = NULL;
2880 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
2882 /* if no fid is specified then do nothing,
2883 * device sync is done via MDS_SYNC */
2884 if (fid_is_zero(&tsi->tsi_fid))
2887 mo = mdt_object_find(tsi->tsi_env, mdt, &tsi->tsi_fid);
2889 RETURN(PTR_ERR(mo));
2891 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp, mo);
2895 repbody->oa.o_oi = body->oa.o_oi;
2896 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
2898 info = tsi2mdt_info(tsi);
2899 ma = &info->mti_attr;
2900 ma->ma_need = MA_INODE;
2902 rc = mdt_attr_get_complex(info, mo, ma);
2904 obdo_from_la(&repbody->oa, &ma->ma_attr, VALID_FLAGS);
2907 mdt_thread_info_fini(info);
2912 mdt_object_put(tsi->tsi_env, mo);
2917 * Handle quota control requests to consult current usage/limit, but also
2918 * to configure quota enforcement
2920 static int mdt_quotactl(struct tgt_session_info *tsi)
2922 struct obd_export *exp = tsi->tsi_exp;
2923 struct req_capsule *pill = tsi->tsi_pill;
2924 struct obd_quotactl *oqctl, *repoqc;
2926 struct mdt_device *mdt = mdt_exp2dev(exp);
2927 struct lu_device *qmt = mdt->mdt_qmt_dev;
2928 struct lu_nodemap *nodemap;
2931 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
2933 RETURN(err_serious(-EPROTO));
2935 rc = req_capsule_server_pack(pill);
2937 RETURN(err_serious(rc));
2939 nodemap = nodemap_get_from_exp(exp);
2940 if (IS_ERR(nodemap))
2941 RETURN(PTR_ERR(nodemap));
2943 switch (oqctl->qc_cmd) {
2944 /* master quotactl */
2947 case LUSTRE_Q_SETDEFAULT:
2948 case LUSTRE_Q_SETQUOTAPOOL:
2949 case LUSTRE_Q_SETINFOPOOL:
2950 case LUSTRE_Q_SETDEFAULT_POOL:
2951 if (!nodemap_can_setquota(nodemap))
2952 GOTO(out_nodemap, rc = -EPERM);
2956 case LUSTRE_Q_GETDEFAULT:
2957 case LUSTRE_Q_GETQUOTAPOOL:
2958 case LUSTRE_Q_GETINFOPOOL:
2959 case LUSTRE_Q_GETDEFAULT_POOL:
2961 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2962 /* slave quotactl */
2969 CERROR("%s: unsupported quotactl command %d: rc = %d\n",
2970 mdt_obd_name(mdt), oqctl->qc_cmd, rc);
2971 GOTO(out_nodemap, rc);
2975 switch (oqctl->qc_type) {
2977 id = nodemap_map_id(nodemap, NODEMAP_UID,
2978 NODEMAP_CLIENT_TO_FS, id);
2981 id = nodemap_map_id(nodemap, NODEMAP_GID,
2982 NODEMAP_CLIENT_TO_FS, id);
2985 /* todo: check/map project id */
2989 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2991 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
2993 GOTO(out_nodemap, rc = err_serious(-EFAULT));
2995 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA)
2996 barrier_exit(tsi->tsi_tgt->lut_bottom);
2998 if (oqctl->qc_id != id)
2999 swap(oqctl->qc_id, id);
3001 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA) {
3002 if (unlikely(!barrier_entry(tsi->tsi_tgt->lut_bottom)))
3003 RETURN(-EINPROGRESS);
3006 switch (oqctl->qc_cmd) {
3012 case LUSTRE_Q_SETDEFAULT:
3013 case LUSTRE_Q_GETDEFAULT:
3014 case LUSTRE_Q_SETQUOTAPOOL:
3015 case LUSTRE_Q_GETQUOTAPOOL:
3016 case LUSTRE_Q_SETINFOPOOL:
3017 case LUSTRE_Q_GETINFOPOOL:
3018 case LUSTRE_Q_SETDEFAULT_POOL:
3019 case LUSTRE_Q_GETDEFAULT_POOL:
3020 /* forward quotactl request to QMT */
3021 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
3026 /* slave quotactl */
3027 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
3032 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
3033 GOTO(out_nodemap, rc = -EFAULT);
3036 if (oqctl->qc_id != id)
3037 swap(oqctl->qc_id, id);
3039 QCTL_COPY(repoqc, oqctl);
3043 nodemap_putref(nodemap);
3048 /** clone llog ctxt from child (mdd)
3049 * This allows remote llog (replicator) access.
3050 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
3051 * context was originally set up, or we can handle them directly.
3052 * I choose the latter, but that means I need any llog
3053 * contexts set up by child to be accessable by the mdt. So we clone the
3054 * context into our context list here.
3056 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
3059 struct md_device *next = mdt->mdt_child;
3060 struct llog_ctxt *ctxt;
3063 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
3066 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
3067 if (rc || ctxt == NULL) {
3071 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
3073 CERROR("Can't set mdt ctxt %d\n", rc);
3078 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
3079 struct mdt_device *mdt, int idx)
3081 struct llog_ctxt *ctxt;
3083 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
3086 /* Put once for the get we just did, and once for the clone */
3087 llog_ctxt_put(ctxt);
3088 llog_ctxt_put(ctxt);
3093 * sec context handlers
3095 static int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
3097 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
3103 * quota request handlers
3105 static int mdt_quota_dqacq(struct tgt_session_info *tsi)
3107 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
3108 struct lu_device *qmt = mdt->mdt_qmt_dev;
3113 RETURN(err_serious(-EOPNOTSUPP));
3115 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
3119 struct mdt_object *mdt_object_new(const struct lu_env *env,
3120 struct mdt_device *d,
3121 const struct lu_fid *f)
3123 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
3124 struct lu_object *o;
3125 struct mdt_object *m;
3128 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
3129 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
3130 if (unlikely(IS_ERR(o)))
3131 m = (struct mdt_object *)o;
3137 struct mdt_object *mdt_object_find(const struct lu_env *env,
3138 struct mdt_device *d,
3139 const struct lu_fid *f)
3141 struct lu_object *o;
3142 struct mdt_object *m;
3145 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
3146 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
3147 if (unlikely(IS_ERR(o)))
3148 m = (struct mdt_object *)o;
3156 * Asyncronous commit for mdt device.
3158 * Pass asynchonous commit call down the MDS stack.
3160 * \param env environment
3161 * \param mdt the mdt device
3163 static void mdt_device_commit_async(const struct lu_env *env,
3164 struct mdt_device *mdt)
3166 struct dt_device *dt = mdt->mdt_bottom;
3170 rc = dt->dd_ops->dt_commit_async(env, dt);
3171 if (unlikely(rc != 0))
3172 CWARN("%s: async commit start failed: rc = %d\n",
3173 mdt_obd_name(mdt), rc);
3174 atomic_inc(&mdt->mdt_async_commit_count);
3179 * Mark the lock as "synchonous".
3181 * Mark the lock to deffer transaction commit to the unlock time.
3183 * \param lock the lock to mark as "synchonous"
3185 * \see mdt_is_lock_sync
3186 * \see mdt_save_lock
3188 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
3190 lock->l_ast_data = (void*)1;
3194 * Check whehter the lock "synchonous" or not.
3196 * \param lock the lock to check
3197 * \retval 1 the lock is "synchonous"
3198 * \retval 0 the lock isn't "synchronous"
3200 * \see mdt_set_lock_sync
3201 * \see mdt_save_lock
3203 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
3205 return lock->l_ast_data != NULL;
3209 * Blocking AST for mdt locks.
3211 * Starts transaction commit if in case of COS lock conflict or
3212 * deffers such a commit to the mdt_save_lock.
3214 * \param lock the lock which blocks a request or cancelling lock
3215 * \param desc unused
3216 * \param data unused
3217 * \param flag indicates whether this cancelling or blocking callback
3219 * \see ldlm_blocking_ast_nocheck
3221 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
3222 void *data, int flag)
3224 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
3225 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
3226 struct ldlm_cb_set_arg *arg = data;
3227 bool commit_async = false;
3231 if (flag == LDLM_CB_CANCELING)
3234 lock_res_and_lock(lock);
3235 if (lock->l_blocking_ast != mdt_blocking_ast) {
3236 unlock_res_and_lock(lock);
3240 /* A blocking ast may be sent from ldlm_lock_decref_internal
3241 * when the last reference to a local lock was released and
3242 * during blocking event from ldlm_work_bl_ast_lock().
3243 * The 'data' parameter is l_ast_data in the first case and
3244 * callback arguments in the second one. Distinguish them by that.
3246 if (!data || data == lock->l_ast_data || !arg->bl_desc)
3247 goto skip_cos_checks;
3249 if (lock->l_req_mode & (LCK_PW | LCK_EX)) {
3250 if (mdt_cos_is_enabled(mdt)) {
3251 if (!arg->bl_desc->bl_same_client)
3252 mdt_set_lock_sync(lock);
3253 } else if (mdt_slc_is_enabled(mdt) &&
3254 arg->bl_desc->bl_cos_incompat) {
3255 mdt_set_lock_sync(lock);
3257 * we may do extra commit here, but there is a small
3258 * window to miss a commit: lock was unlocked (saved),
3259 * then a conflict lock queued and we come here, but
3260 * REP-ACK not received, so lock was not converted to
3262 * Fortunately this window is quite small, so the
3263 * extra commit should be rare (not to say distributed
3264 * operation is rare too).
3266 commit_async = true;
3268 } else if (lock->l_req_mode == LCK_COS) {
3269 commit_async = true;
3273 rc = ldlm_blocking_ast_nocheck(lock);
3278 rc = lu_env_init(&env, LCT_LOCAL);
3279 if (unlikely(rc != 0))
3280 CWARN("%s: lu_env initialization failed, cannot "
3281 "start asynchronous commit: rc = %d\n",
3284 mdt_device_commit_async(&env, mdt);
3291 * Blocking AST for cross-MDT lock
3293 * Discard lock from uncommitted_slc_locks and cancel it.
3295 * \param lock the lock which blocks a request or cancelling lock
3296 * \param desc unused
3297 * \param data unused
3298 * \param flag indicates whether this cancelling or blocking callback
3299 * \retval 0 on success
3300 * \retval negative number on error
3302 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
3303 void *data, int flag)
3309 case LDLM_CB_BLOCKING: {
3310 struct lustre_handle lockh;
3312 ldlm_lock2handle(lock, &lockh);
3313 rc = ldlm_cli_cancel(&lockh,
3314 ldlm_is_atomic_cb(lock) ? 0 : LCF_ASYNC);
3316 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
3321 case LDLM_CB_CANCELING: {
3322 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
3323 struct mdt_device *mdt =
3324 mdt_dev(obd->obd_lu_dev->ld_site->ls_top_dev);
3326 LDLM_DEBUG(lock, "Revoke remote lock\n");
3328 /* discard slc lock here so that it can be cleaned anytime,
3329 * especially for cleanup_resource() */
3330 tgt_discard_slc_lock(&mdt->mdt_lut, lock);
3332 /* once we cache lock, l_ast_data is set to mdt_object */
3333 if (lock->l_ast_data != NULL) {
3334 struct mdt_object *mo = lock->l_ast_data;
3337 rc = lu_env_init(&env, LCT_MD_THREAD);
3338 if (unlikely(rc != 0)) {
3339 CWARN("%s: lu_env initialization failed, object %p "DFID" is leaked!: rc = %d\n",
3341 PFID(mdt_object_fid(mo)), rc);
3345 if (lock->l_policy_data.l_inodebits.bits &
3346 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)) {
3347 rc = mo_invalidate(&env, mdt_object_child(mo));
3348 mo->mot_cache_attr = 0;
3350 mdt_object_put(&env, mo);
3362 int mdt_check_resent_lock(struct mdt_thread_info *info,
3363 struct mdt_object *mo,
3364 struct mdt_lock_handle *lhc)
3366 /* the lock might already be gotten in ldlm_handle_enqueue() */
3367 if (unlikely(lustre_handle_is_used(&lhc->mlh_reg_lh))) {
3368 struct ptlrpc_request *req = mdt_info_req(info);
3369 struct ldlm_lock *lock;
3371 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
3372 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
3374 /* Lock is pinned by ldlm_handle_enqueue0() as it is
3375 * a resend case, however, it could be already destroyed
3376 * due to client eviction or a raced cancel RPC. */
3377 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx",
3378 lhc->mlh_reg_lh.cookie);
3382 if (!fid_res_name_eq(mdt_object_fid(mo),
3383 &lock->l_resource->lr_name)) {
3384 CWARN("%s: Although resent, but still not "
3385 "get child lock:"DFID"\n",
3386 info->mti_exp->exp_obd->obd_name,
3387 PFID(mdt_object_fid(mo)));
3388 LDLM_LOCK_PUT(lock);
3391 LDLM_LOCK_PUT(lock);
3397 static void mdt_remote_object_lock_created_cb(struct ldlm_lock *lock)
3399 mdt_object_get(NULL, lock->l_ast_data);
3402 int mdt_remote_object_lock_try(struct mdt_thread_info *mti,
3403 struct mdt_object *o, const struct lu_fid *fid,
3404 struct lustre_handle *lh, enum ldlm_mode mode,
3405 __u64 *ibits, __u64 trybits, bool cache)
3407 struct ldlm_enqueue_info *einfo = &mti->mti_remote_einfo;
3408 union ldlm_policy_data *policy = &mti->mti_policy;
3409 struct ldlm_res_id *res_id = &mti->mti_res_id;
3413 LASSERT(mdt_object_remote(o));
3415 fid_build_reg_res_name(fid, res_id);
3417 memset(einfo, 0, sizeof(*einfo));
3418 einfo->ei_type = LDLM_IBITS;
3419 einfo->ei_mode = mode;
3420 einfo->ei_cb_bl = mdt_remote_blocking_ast;
3421 einfo->ei_cb_cp = ldlm_completion_ast;
3422 einfo->ei_enq_slave = 0;
3423 einfo->ei_res_id = res_id;
3427 * if we cache lock, couple lock with mdt_object, so that object
3428 * can be easily found in lock ASTs.
3430 einfo->ei_cbdata = o;
3431 einfo->ei_cb_created = mdt_remote_object_lock_created_cb;
3434 memset(policy, 0, sizeof(*policy));
3435 policy->l_inodebits.bits = *ibits;
3436 policy->l_inodebits.try_bits = trybits;
3438 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
3441 /* Return successfully acquired bits to a caller */
3443 struct ldlm_lock *lock = ldlm_handle2lock(lh);
3446 *ibits = lock->l_policy_data.l_inodebits.bits;
3447 LDLM_LOCK_PUT(lock);
3452 int mdt_remote_object_lock(struct mdt_thread_info *mti, struct mdt_object *o,
3453 const struct lu_fid *fid, struct lustre_handle *lh,
3454 enum ldlm_mode mode, __u64 ibits, bool cache)
3456 return mdt_remote_object_lock_try(mti, o, fid, lh, mode, &ibits, 0,
3460 int mdt_object_local_lock(struct mdt_thread_info *info, struct mdt_object *o,
3461 struct mdt_lock_handle *lh, __u64 *ibits,
3462 __u64 trybits, bool cos_incompat)
3464 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
3465 union ldlm_policy_data *policy = &info->mti_policy;
3466 struct ldlm_res_id *res_id = &info->mti_res_id;
3467 __u64 dlmflags = 0, *cookie = NULL;
3471 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3472 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3473 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
3474 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
3477 LASSERT(lh->mlh_reg_mode == LCK_PW ||
3478 lh->mlh_reg_mode == LCK_EX);
3479 dlmflags |= LDLM_FL_COS_INCOMPAT;
3480 } else if (mdt_cos_is_enabled(info->mti_mdt)) {
3481 dlmflags |= LDLM_FL_COS_ENABLED;
3484 /* Only enqueue LOOKUP lock for remote object */
3485 LASSERT(ergo(mdt_object_remote(o), *ibits == MDS_INODELOCK_LOOKUP));
3487 /* Lease lock are granted with LDLM_FL_CANCEL_ON_BLOCK */
3488 if (lh->mlh_type == MDT_REG_LOCK && lh->mlh_reg_mode == LCK_EX &&
3489 *ibits == MDS_INODELOCK_OPEN)
3490 dlmflags |= LDLM_FL_CANCEL_ON_BLOCK;
3492 if (lh->mlh_type == MDT_PDO_LOCK) {
3493 /* check for exists after object is locked */
3494 if (mdt_object_exists(o) == 0) {
3495 /* Non-existent object shouldn't have PDO lock */
3498 /* Non-dir object shouldn't have PDO lock */
3499 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
3504 fid_build_reg_res_name(mdt_object_fid(o), res_id);
3505 dlmflags |= LDLM_FL_ATOMIC_CB;
3508 cookie = &info->mti_exp->exp_handle.h_cookie;
3511 * Take PDO lock on whole directory and build correct @res_id for lock
3512 * on part of directory.
3514 if (lh->mlh_pdo_hash != 0) {
3515 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
3516 mdt_lock_pdo_mode(info, o, lh);
3517 if (lh->mlh_pdo_mode != LCK_NL) {
3519 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
3520 * is never going to be sent to client and we do not
3521 * want it slowed down due to possible cancels.
3523 policy->l_inodebits.bits =
3524 *ibits & MDS_INODELOCK_UPDATE;
3525 policy->l_inodebits.try_bits =
3526 trybits & MDS_INODELOCK_UPDATE;
3527 /* at least one of them should be set */
3528 LASSERT(policy->l_inodebits.bits |
3529 policy->l_inodebits.try_bits);
3530 rc = mdt_fid_lock(info->mti_env, ns, &lh->mlh_pdo_lh,
3531 lh->mlh_pdo_mode, policy, res_id,
3533 if (unlikely(rc != 0))
3534 GOTO(out_unlock, rc);
3538 * Finish res_id initializing by name hash marking part of
3539 * directory which is taking modification.
3541 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
3544 policy->l_inodebits.bits = *ibits;
3545 policy->l_inodebits.try_bits = trybits;
3546 policy->l_inodebits.li_gid = lh->mlh_gid;
3549 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
3550 * going to be sent to client. If it is - mdt_intent_policy() path will
3551 * fix it up and turn FL_LOCAL flag off.
3553 rc = mdt_fid_lock(info->mti_env, ns, &lh->mlh_reg_lh, lh->mlh_reg_mode,
3554 policy, res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
3558 mdt_object_unlock(info, o, lh, 1);
3559 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
3560 lh->mlh_pdo_hash != 0 &&
3561 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
3562 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
3564 /* Return successfully acquired bits to a caller */
3566 struct ldlm_lock *lock = ldlm_handle2lock(&lh->mlh_reg_lh);
3569 *ibits = lock->l_policy_data.l_inodebits.bits;
3570 LDLM_LOCK_PUT(lock);
3576 mdt_object_lock_internal(struct mdt_thread_info *info, struct mdt_object *o,
3577 struct mdt_lock_handle *lh, __u64 *ibits,
3578 __u64 trybits, bool cos_incompat)
3580 struct mdt_lock_handle *local_lh = NULL;
3584 if (!mdt_object_remote(o)) {
3585 rc = mdt_object_local_lock(info, o, lh, ibits, trybits,
3590 /* XXX do not support PERM/LAYOUT/XATTR lock for remote object yet */
3591 *ibits &= ~(MDS_INODELOCK_PERM | MDS_INODELOCK_LAYOUT |
3592 MDS_INODELOCK_XATTR);
3594 /* Only enqueue LOOKUP lock for remote object */
3595 if (*ibits & MDS_INODELOCK_LOOKUP) {
3596 __u64 local = MDS_INODELOCK_LOOKUP;
3598 rc = mdt_object_local_lock(info, o, lh, &local, 0,
3606 if ((*ibits | trybits) & MDS_INODELOCK_UPDATE) {
3607 /* Sigh, PDO needs to enqueue 2 locks right now, but
3608 * enqueue RPC can only request 1 lock, to avoid extra
3609 * RPC, so it will instead enqueue EX lock for remote
3610 * object anyway XXX*/
3611 if (lh->mlh_type == MDT_PDO_LOCK &&
3612 lh->mlh_pdo_hash != 0) {
3614 "%s: "DFID" convert PDO lock to EX lock.\n",
3615 mdt_obd_name(info->mti_mdt),
3616 PFID(mdt_object_fid(o)));
3617 lh->mlh_pdo_hash = 0;
3618 lh->mlh_rreg_mode = LCK_EX;
3619 lh->mlh_type = MDT_REG_LOCK;
3622 rc = mdt_remote_object_lock_try(info, o, mdt_object_fid(o),
3625 ibits, trybits, false);
3626 if (rc != ELDLM_OK) {
3627 if (local_lh != NULL)
3628 mdt_object_unlock(info, o, local_lh, rc);
3633 /* other components like LFSCK can use lockless access
3634 * and populate cache, so we better invalidate it */
3635 mo_invalidate(info->mti_env, mdt_object_child(o));
3640 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
3641 struct mdt_lock_handle *lh, __u64 ibits)
3643 return mdt_object_lock_internal(info, o, lh, &ibits, 0, false);
3646 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
3647 struct mdt_lock_handle *lh, __u64 ibits,
3650 LASSERT(lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX);
3651 return mdt_object_lock_internal(info, o, lh, &ibits, 0,
3655 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
3656 struct mdt_lock_handle *lh, __u64 *ibits,
3657 __u64 trybits, bool cos_incompat)
3659 bool trylock_only = *ibits == 0;
3662 LASSERT(!(*ibits & trybits));
3663 rc = mdt_object_lock_internal(info, o, lh, ibits, trybits,
3665 if (rc && trylock_only) { /* clear error for try ibits lock only */
3666 LASSERT(*ibits == 0);
3673 * Save a lock within request object.
3675 * Keep the lock referenced until whether client ACK or transaction
3676 * commit happens or release the lock immediately depending on input
3677 * parameters. If COS is ON, a write lock is converted to COS lock
3680 * \param info thead info object
3681 * \param h lock handle
3682 * \param mode lock mode
3683 * \param decref force immediate lock releasing
3685 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
3686 enum ldlm_mode mode, int decref)
3690 if (lustre_handle_is_used(h)) {
3691 if (decref || !info->mti_has_trans ||
3692 !(mode & (LCK_PW | LCK_EX))) {
3693 mdt_fid_unlock(h, mode);
3695 struct mdt_device *mdt = info->mti_mdt;
3696 struct ldlm_lock *lock = ldlm_handle2lock(h);
3697 struct ptlrpc_request *req = mdt_info_req(info);
3698 bool cos = mdt_cos_is_enabled(mdt);
3699 bool convert_lock = !cos && mdt_slc_is_enabled(mdt);
3701 LASSERTF(lock != NULL, "no lock for cookie %#llx\n",
3704 /* there is no request if mdt_object_unlock() is called
3705 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
3706 if (likely(req != NULL)) {
3707 LDLM_DEBUG(lock, "save lock request %p reply "
3708 "state %p transno %lld\n", req,
3709 req->rq_reply_state, req->rq_transno);
3711 ldlm_lock_mode_downgrade(lock, LCK_COS);
3714 if (req->rq_export->exp_disconnected)
3715 mdt_fid_unlock(h, mode);
3717 ptlrpc_save_lock(req, h, mode, cos,
3720 mdt_fid_unlock(h, mode);
3722 if (mdt_is_lock_sync(lock)) {
3723 CDEBUG(D_HA, "found sync-lock,"
3724 " async commit started\n");
3725 mdt_device_commit_async(info->mti_env,
3728 LDLM_LOCK_PUT(lock);
3737 * Save cross-MDT lock in uncommitted_slc_locks
3739 * Keep the lock referenced until transaction commit happens or release the lock
3740 * immediately depending on input parameters.
3742 * \param info thead info object
3743 * \param h lock handle
3744 * \param mode lock mode
3745 * \param decref force immediate lock releasing
3747 static void mdt_save_remote_lock(struct mdt_thread_info *info,
3748 struct mdt_object *o, struct lustre_handle *h,
3749 enum ldlm_mode mode, int decref)
3753 if (lustre_handle_is_used(h)) {
3754 struct ldlm_lock *lock = ldlm_handle2lock(h);
3755 struct ptlrpc_request *req = mdt_info_req(info);
3758 (lock->l_policy_data.l_inodebits.bits &
3759 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)))
3760 mo_invalidate(info->mti_env, mdt_object_child(o));
3762 if (decref || !info->mti_has_trans || !req ||
3763 !(mode & (LCK_PW | LCK_EX))) {
3764 ldlm_lock_decref_and_cancel(h, mode);
3765 LDLM_LOCK_PUT(lock);
3767 tgt_save_slc_lock(&info->mti_mdt->mdt_lut, lock,
3769 ldlm_lock_decref(h, mode);
3778 * Unlock mdt object.
3780 * Immeditely release the regular lock and the PDO lock or save the
3781 * lock in request and keep them referenced until client ACK or
3782 * transaction commit.
3784 * \param info thread info object
3785 * \param o mdt object
3786 * \param lh mdt lock handle referencing regular and PDO locks
3787 * \param decref force immediate lock releasing
3789 * XXX o is not used and may be NULL, see hsm_cdt_request_completed().
3791 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
3792 struct mdt_lock_handle *lh, int decref)
3796 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
3797 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
3798 mdt_save_remote_lock(info, o, &lh->mlh_rreg_lh, lh->mlh_rreg_mode,
3804 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
3805 const struct lu_fid *f,
3806 struct mdt_lock_handle *lh,
3809 struct mdt_object *o;
3811 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
3815 rc = mdt_object_lock(info, o, lh, ibits);
3817 mdt_object_put(info->mti_env, o);
3824 void mdt_object_unlock_put(struct mdt_thread_info * info,
3825 struct mdt_object * o,
3826 struct mdt_lock_handle *lh,
3829 mdt_object_unlock(info, o, lh, decref);
3830 mdt_object_put(info->mti_env, o);
3834 * Generic code handling requests that have struct mdt_body passed in:
3836 * - extract mdt_body from request and save it in @info, if present;
3838 * - create lu_object, corresponding to the fid in mdt_body, and save it in
3841 * - if HAS_BODY flag is set for this request type check whether object
3842 * actually exists on storage (lu_object_exists()).
3845 static int mdt_body_unpack(struct mdt_thread_info *info,
3846 enum tgt_handler_flags flags)
3848 const struct mdt_body *body;
3849 struct mdt_object *obj;
3850 const struct lu_env *env;
3851 struct req_capsule *pill;
3855 env = info->mti_env;
3856 pill = info->mti_pill;
3858 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
3862 if (!(body->mbo_valid & OBD_MD_FLID))
3865 if (!fid_is_sane(&body->mbo_fid1)) {
3866 CERROR("Invalid fid: "DFID"\n", PFID(&body->mbo_fid1));
3870 obj = mdt_object_find(env, info->mti_mdt, &body->mbo_fid1);
3872 if ((flags & HAS_BODY) && !mdt_object_exists(obj)) {
3873 mdt_object_put(env, obj);
3876 info->mti_object = obj;
3885 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info,
3886 enum tgt_handler_flags flags)
3888 struct req_capsule *pill = info->mti_pill;
3893 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
3894 rc = mdt_body_unpack(info, flags);
3898 if (rc == 0 && (flags & HAS_REPLY)) {
3900 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
3901 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
3903 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
3904 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
3907 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
3908 * by default. If the target object has more ACL entries, then
3909 * enlarge the buffer when necessary. */
3910 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
3911 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
3912 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
3914 mdt_preset_secctx_size(info);
3915 mdt_preset_encctx_size(info);
3917 rc = req_capsule_server_pack(pill);
3919 CWARN("%s: cannot pack response: rc = %d\n",
3920 mdt_obd_name(info->mti_mdt), rc);
3925 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
3927 lh->mlh_type = MDT_NUL_LOCK;
3928 lh->mlh_reg_lh.cookie = 0ull;
3929 lh->mlh_reg_mode = LCK_MINMODE;
3930 lh->mlh_pdo_lh.cookie = 0ull;
3931 lh->mlh_pdo_mode = LCK_MINMODE;
3932 lh->mlh_rreg_lh.cookie = 0ull;
3933 lh->mlh_rreg_mode = LCK_MINMODE;
3936 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
3938 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3939 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3943 * Initialize fields of struct mdt_thread_info. Other fields are left in
3944 * uninitialized state, because it's too expensive to zero out whole
3945 * mdt_thread_info (> 1K) on each request arrival.
3947 void mdt_thread_info_init(struct ptlrpc_request *req,
3948 struct mdt_thread_info *info)
3952 info->mti_pill = &req->rq_pill;
3955 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3956 mdt_lock_handle_init(&info->mti_lh[i]);
3958 /* mdt device: it can be NULL while CONNECT */
3959 if (req->rq_export) {
3960 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
3961 info->mti_exp = req->rq_export;
3963 info->mti_mdt = NULL;
3964 info->mti_env = req->rq_svc_thread->t_env;
3965 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
3967 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
3968 info->mti_big_buf = LU_BUF_NULL;
3969 info->mti_body = NULL;
3970 info->mti_object = NULL;
3971 info->mti_dlm_req = NULL;
3972 info->mti_has_trans = 0;
3973 info->mti_cross_ref = 0;
3974 info->mti_opdata = 0;
3975 info->mti_big_lmm_used = 0;
3976 info->mti_big_acl_used = 0;
3977 info->mti_som_valid = 0;
3979 info->mti_spec.no_create = 0;
3980 info->mti_spec.sp_rm_entry = 0;
3981 info->mti_spec.sp_permitted = 0;
3983 info->mti_spec.u.sp_ea.eadata = NULL;
3984 info->mti_spec.u.sp_ea.eadatalen = 0;
3987 void mdt_thread_info_fini(struct mdt_thread_info *info)
3991 if (info->mti_object != NULL) {
3992 mdt_object_put(info->mti_env, info->mti_object);
3993 info->mti_object = NULL;
3996 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3997 mdt_lock_handle_fini(&info->mti_lh[i]);
3998 info->mti_env = NULL;
3999 info->mti_pill = NULL;
4000 info->mti_exp = NULL;
4001 info->mti_mdt = NULL;
4003 if (unlikely(info->mti_big_buf.lb_buf != NULL))
4004 lu_buf_free(&info->mti_big_buf);
4007 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
4009 struct mdt_thread_info *mti;
4011 mti = mdt_th_info(tsi->tsi_env);
4012 LASSERT(mti != NULL);
4014 mdt_thread_info_init(tgt_ses_req(tsi), mti);
4015 if (tsi->tsi_corpus != NULL) {
4016 mti->mti_object = mdt_obj(tsi->tsi_corpus);
4017 lu_object_get(tsi->tsi_corpus);
4019 mti->mti_body = tsi->tsi_mdt_body;
4020 mti->mti_dlm_req = tsi->tsi_dlm_req;
4025 static int mdt_tgt_connect(struct tgt_session_info *tsi)
4027 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_DELAY_CONDITIONAL) &&
4029 tsi2mdt_info(tsi)->mti_mdt->mdt_seq_site.ss_node_id)
4030 schedule_timeout_uninterruptible(cfs_time_seconds(3));
4032 return tgt_connect(tsi);
4035 static int mdt_intent_glimpse(enum ldlm_intent_flags it_opc,
4036 struct mdt_thread_info *info,
4037 struct ldlm_lock **lockp, __u64 flags)
4039 return mdt_glimpse_enqueue(info, info->mti_mdt->mdt_namespace,
4042 static int mdt_intent_brw(enum ldlm_intent_flags it_opc,
4043 struct mdt_thread_info *info,
4044 struct ldlm_lock **lockp, __u64 flags)
4046 return mdt_brw_enqueue(info, info->mti_mdt->mdt_namespace,
4050 int mdt_intent_lock_replace(struct mdt_thread_info *info,
4051 struct ldlm_lock **lockp,
4052 struct mdt_lock_handle *lh,
4053 __u64 flags, int result)
4055 struct ptlrpc_request *req = mdt_info_req(info);
4056 struct ldlm_lock *lock = *lockp;
4057 struct ldlm_lock *new_lock;
4059 /* If possible resent found a lock, @lh is set to its handle */
4060 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
4062 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
4063 lh->mlh_reg_lh.cookie = 0;
4067 if (new_lock == NULL && (flags & LDLM_FL_RESENT)) {
4068 /* Lock is pinned by ldlm_handle_enqueue0() as it is
4069 * a resend case, however, it could be already destroyed
4070 * due to client eviction or a raced cancel RPC. */
4071 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx\n",
4072 lh->mlh_reg_lh.cookie);
4073 lh->mlh_reg_lh.cookie = 0;
4077 LASSERTF(new_lock != NULL,
4078 "lockh %#llx flags %#llx : rc = %d\n",
4079 lh->mlh_reg_lh.cookie, flags, result);
4082 * If we've already given this lock to a client once, then we should
4083 * have no readers or writers. Otherwise, we should have one reader
4084 * _or_ writer ref (which will be zeroed below) before returning the
4087 if (new_lock->l_export == req->rq_export) {
4088 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
4090 LASSERT(new_lock->l_export == NULL);
4091 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
4096 if (new_lock->l_export == req->rq_export) {
4098 * Already gave this to the client, which means that we
4099 * reconstructed a reply.
4101 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
4104 LDLM_LOCK_RELEASE(new_lock);
4105 lh->mlh_reg_lh.cookie = 0;
4106 RETURN(ELDLM_LOCK_REPLACED);
4110 * Fixup the lock to be given to the client.
4112 lock_res_and_lock(new_lock);
4113 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
4114 * possible blocking AST. */
4115 while (new_lock->l_readers > 0) {
4116 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
4117 lu_ref_del(&new_lock->l_reference, "user", new_lock);
4118 new_lock->l_readers--;
4120 while (new_lock->l_writers > 0) {
4121 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
4122 lu_ref_del(&new_lock->l_reference, "user", new_lock);
4123 new_lock->l_writers--;
4126 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
4127 new_lock->l_blocking_ast = lock->l_blocking_ast;
4128 new_lock->l_completion_ast = lock->l_completion_ast;
4129 if (ldlm_has_dom(new_lock))
4130 new_lock->l_glimpse_ast = ldlm_server_glimpse_ast;
4131 new_lock->l_remote_handle = lock->l_remote_handle;
4132 new_lock->l_flags &= ~LDLM_FL_LOCAL;
4134 unlock_res_and_lock(new_lock);
4136 cfs_hash_add(new_lock->l_export->exp_lock_hash,
4137 &new_lock->l_remote_handle,
4138 &new_lock->l_exp_hash);
4140 LDLM_LOCK_RELEASE(new_lock);
4141 lh->mlh_reg_lh.cookie = 0;
4143 RETURN(ELDLM_LOCK_REPLACED);
4146 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
4147 struct ldlm_lock *new_lock,
4148 struct mdt_lock_handle *lh, __u64 flags)
4150 struct ptlrpc_request *req = mdt_info_req(info);
4151 struct ldlm_request *dlmreq;
4153 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
4156 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
4158 /* Check if this is a resend case (MSG_RESENT is set on RPC) and a
4159 * lock was found by ldlm_handle_enqueue(); if so @lh must be
4161 if (flags & LDLM_FL_RESENT) {
4162 lh->mlh_reg_lh.cookie = new_lock->l_handle.h_cookie;
4163 lh->mlh_reg_mode = new_lock->l_granted_mode;
4165 LDLM_DEBUG(new_lock, "Restoring lock cookie");
4166 DEBUG_REQ(D_DLMTRACE, req, "restoring lock cookie %#llx",
4167 lh->mlh_reg_lh.cookie);
4172 * If the xid matches, then we know this is a resent request, and allow
4173 * it. (It's probably an OPEN, for which we don't send a lock.
4175 if (req_can_reconstruct(req, NULL) != 0)
4179 * This remote handle isn't enqueued, so we never received or processed
4180 * this request. Clear MSG_RESENT, because it can be handled like any
4181 * normal request now.
4183 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
4185 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle %#llx",
4186 dlmreq->lock_handle[0].cookie);
4189 static int mdt_intent_getxattr(enum ldlm_intent_flags it_opc,
4190 struct mdt_thread_info *info,
4191 struct ldlm_lock **lockp,
4194 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4195 struct ldlm_reply *ldlm_rep = NULL;
4200 * Initialize lhc->mlh_reg_lh either from a previously granted lock
4201 * (for the resend case) or a new lock. Below we will use it to
4202 * replace the original lock.
4204 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4205 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
4206 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
4207 rc = mdt_object_lock(info, info->mti_object, lhc,
4208 MDS_INODELOCK_XATTR);
4213 rc = mdt_getxattr(info);
4215 if (mdt_info_req(info)->rq_repmsg != NULL)
4216 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4218 if (ldlm_rep == NULL ||
4219 OBD_FAIL_CHECK(OBD_FAIL_MDS_XATTR_REP)) {
4220 mdt_object_unlock(info, info->mti_object, lhc, 1);
4224 RETURN(err_serious(-EFAULT));
4227 ldlm_rep->lock_policy_res2 = clear_serious(rc);
4229 /* This is left for interop instead of adding a new interop flag.
4231 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(3, 0, 0, 0)
4232 if (ldlm_rep->lock_policy_res2) {
4233 mdt_object_unlock(info, info->mti_object, lhc, 1);
4234 RETURN(ELDLM_LOCK_ABORTED);
4238 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4242 static int mdt_intent_getattr(enum ldlm_intent_flags it_opc,
4243 struct mdt_thread_info *info,
4244 struct ldlm_lock **lockp,
4247 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4249 struct ldlm_reply *ldlm_rep;
4250 struct mdt_body *reqbody;
4251 struct mdt_body *repbody;
4255 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
4258 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
4261 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
4262 repbody->mbo_eadatasize = 0;
4263 repbody->mbo_aclsize = 0;
4267 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
4270 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
4274 CERROR("%s: unsupported intent %#x\n",
4275 mdt_obd_name(info->mti_mdt), (unsigned int)it_opc);
4276 GOTO(out_shrink, rc = -EINVAL);
4279 rc = mdt_init_ucred(info, reqbody);
4281 GOTO(out_shrink, rc);
4283 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4284 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
4286 /* Get lock from request for possible resent case. */
4287 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4289 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
4290 ldlm_rep->lock_policy_res2 = clear_serious(rc);
4292 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
4293 ldlm_rep->lock_policy_res2 = 0;
4294 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
4295 ldlm_rep->lock_policy_res2) {
4296 lhc->mlh_reg_lh.cookie = 0ull;
4297 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
4300 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4303 mdt_exit_ucred(info);
4305 mdt_client_compatibility(info);
4306 rc2 = mdt_fix_reply(info);
4312 static int mdt_intent_layout(enum ldlm_intent_flags it_opc,
4313 struct mdt_thread_info *info,
4314 struct ldlm_lock **lockp,
4317 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4318 struct md_layout_change layout = { .mlc_opc = MD_LAYOUT_NOP };
4319 struct layout_intent *intent;
4320 struct ldlm_reply *ldlm_rep;
4321 struct lu_fid *fid = &info->mti_tmp_fid2;
4322 struct mdt_object *obj = NULL;
4323 int layout_size = 0;
4324 struct lu_buf *buf = &layout.mlc_buf;
4329 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
4331 intent = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
4335 CDEBUG(D_INFO, DFID "got layout change request from client: "
4336 "opc:%u flags:%#x extent "DEXT"\n",
4337 PFID(fid), intent->li_opc, intent->li_flags,
4338 PEXT(&intent->li_extent));
4340 switch (intent->li_opc) {
4341 case LAYOUT_INTENT_TRUNC:
4342 case LAYOUT_INTENT_WRITE:
4343 layout.mlc_opc = MD_LAYOUT_WRITE;
4344 layout.mlc_intent = intent;
4346 case LAYOUT_INTENT_ACCESS:
4348 case LAYOUT_INTENT_READ:
4349 case LAYOUT_INTENT_GLIMPSE:
4350 case LAYOUT_INTENT_RELEASE:
4351 case LAYOUT_INTENT_RESTORE:
4352 CERROR("%s: Unsupported layout intent opc %d\n",
4353 mdt_obd_name(info->mti_mdt), intent->li_opc);
4356 CERROR("%s: Unknown layout intent opc %d\n",
4357 mdt_obd_name(info->mti_mdt), intent->li_opc);
4361 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
4363 RETURN(PTR_ERR(obj));
4365 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
4366 /* if layout is going to be changed don't use the current EA
4367 * size but the maximum one. That buffer will be shrinked
4368 * to the actual size in req_capsule_shrink() before reply.
4370 if (layout.mlc_opc == MD_LAYOUT_WRITE) {
4371 layout_size = info->mti_mdt->mdt_max_mdsize;
4373 layout_size = mdt_attr_get_eabuf_size(info, obj);
4374 if (layout_size < 0)
4375 GOTO(out, rc = layout_size);
4377 if (layout_size > info->mti_mdt->mdt_max_mdsize)
4378 info->mti_mdt->mdt_max_mdsize = layout_size;
4380 CDEBUG(D_INFO, "%s: layout_size %d\n",
4381 mdt_obd_name(info->mti_mdt), layout_size);
4385 * set reply buffer size, so that ldlm_handle_enqueue0()->
4386 * ldlm_lvbo_fill() will fill the reply buffer with lovea.
4388 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
4390 rc = req_capsule_server_pack(info->mti_pill);
4394 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4396 GOTO(out, rc = -EPROTO);
4398 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
4400 /* take lock in ldlm_lock_enqueue() for LAYOUT_INTENT_ACCESS */
4401 if (layout.mlc_opc == MD_LAYOUT_NOP)
4404 rc = mdt_check_resent(info, mdt_reconstruct_generic, lhc);
4408 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
4409 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
4415 if (unlikely(req_is_replay(mdt_info_req(info)))) {
4416 buf->lb_buf = req_capsule_client_get(info->mti_pill,
4418 buf->lb_len = req_capsule_get_size(info->mti_pill,
4419 &RMF_EADATA, RCL_CLIENT);
4421 * If it's a replay of layout write intent RPC, the client has
4422 * saved the extended lovea when it get reply then.
4424 if (buf->lb_len > 0)
4425 mdt_fix_lov_magic(info, buf->lb_buf);
4428 /* Get lock from request for possible resent case. */
4429 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4430 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
4433 * Instantiate some layout components, if @buf contains lovea, then it's
4434 * a replay of the layout intent write RPC.
4436 rc = mdt_layout_change(info, obj, lhc, &layout);
4437 ldlm_rep->lock_policy_res2 = clear_serious(rc);
4439 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
4440 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4441 if (rc == ELDLM_LOCK_REPLACED &&
4442 (*lockp)->l_granted_mode == LCK_EX)
4443 ldlm_lock_mode_downgrade(*lockp, LCK_CR);
4448 mdt_object_put(info->mti_env, obj);
4452 static int mdt_intent_open(enum ldlm_intent_flags it_opc,
4453 struct mdt_thread_info *info,
4454 struct ldlm_lock **lockp,
4457 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4458 struct ldlm_reply *rep = NULL;
4461 struct ptlrpc_request *req = mdt_info_req(info);
4463 static const struct req_format *intent_fmts[REINT_MAX] = {
4464 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
4465 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
4470 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
4474 /* Get lock from request for possible resent case. */
4475 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4477 rc = mdt_reint_internal(info, lhc, opc);
4479 if (rc < 0 && lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
4480 DEBUG_REQ(D_ERROR, req, "Replay open failed with %d", rc);
4482 /* Check whether the reply has been packed successfully. */
4483 if (mdt_info_req(info)->rq_repmsg != NULL)
4484 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4489 RETURN(err_serious(-EFAULT));
4492 /* MDC expects this in any case */
4494 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
4496 /* the open lock or the lock for cross-ref object should be
4497 * returned to the client */
4498 if (lustre_handle_is_used(&lhc->mlh_reg_lh) &&
4499 (rc == 0 || rc == -MDT_EREMOTE_OPEN)) {
4500 rep->lock_policy_res2 = 0;
4501 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4505 rep->lock_policy_res2 = clear_serious(rc);
4507 if (rep->lock_policy_res2 == -ENOENT &&
4508 mdt_get_disposition(rep, DISP_LOOKUP_NEG) &&
4509 !mdt_get_disposition(rep, DISP_OPEN_CREATE))
4510 rep->lock_policy_res2 = 0;
4512 lhc->mlh_reg_lh.cookie = 0ull;
4513 if (rc == -ENOTCONN || rc == -ENODEV ||
4514 rc == -EOVERFLOW) { /**< if VBR failure then return error */
4516 * If it is the disconnect error (ENODEV & ENOCONN), the error
4517 * will be returned by rq_status, and client at ptlrpc layer
4518 * will detect this, then disconnect, reconnect the import
4519 * immediately, instead of impacting the following the rpc.
4524 * For other cases, the error will be returned by intent, and client
4525 * will retrieve the result from intent.
4527 RETURN(ELDLM_LOCK_ABORTED);
4530 static int mdt_intent_opc(enum ldlm_intent_flags it_opc,
4531 struct mdt_thread_info *info,
4532 struct ldlm_lock **lockp,
4533 u64 flags /* LDLM_FL_* */)
4535 struct req_capsule *pill = info->mti_pill;
4536 struct ptlrpc_request *req = mdt_info_req(info);
4537 const struct req_format *it_format;
4538 int (*it_handler)(enum ldlm_intent_flags,
4539 struct mdt_thread_info *,
4540 struct ldlm_lock **,
4542 enum tgt_handler_flags it_handler_flags = 0;
4543 struct ldlm_reply *rep;
4544 bool check_mdt_object = false;
4550 case IT_OPEN|IT_CREAT:
4552 * OCREAT is not a IS_MUTABLE request since the file may
4553 * already exist. We do the extra check of
4554 * OBD_CONNECT_RDONLY in mdt_reint_open() when we
4555 * really need to create the object.
4557 it_format = &RQF_LDLM_INTENT;
4558 it_handler = &mdt_intent_open;
4561 check_mdt_object = true;
4564 it_format = &RQF_LDLM_INTENT_GETATTR;
4565 it_handler = &mdt_intent_getattr;
4566 it_handler_flags = HAS_REPLY;
4569 check_mdt_object = true;
4570 it_format = &RQF_LDLM_INTENT_GETXATTR;
4571 it_handler = &mdt_intent_getxattr;
4572 it_handler_flags = HAS_BODY;
4575 it_format = &RQF_LDLM_INTENT_LAYOUT;
4576 it_handler = &mdt_intent_layout;
4579 it_format = &RQF_LDLM_INTENT;
4580 it_handler = &mdt_intent_glimpse;
4583 it_format = &RQF_LDLM_INTENT;
4584 it_handler = &mdt_intent_brw;
4586 case IT_QUOTA_DQACQ:
4587 case IT_QUOTA_CONN: {
4588 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
4591 RETURN(-EOPNOTSUPP);
4593 if (mdt_rdonly(req->rq_export))
4596 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
4597 /* pass the request to quota master */
4598 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
4599 mdt_info_req(info), lockp,
4604 CERROR("%s: unknown intent code %#x\n",
4605 mdt_obd_name(info->mti_mdt), it_opc);
4609 req_capsule_extend(pill, it_format);
4611 rc = mdt_unpack_req_pack_rep(info, it_handler_flags);
4615 if (unlikely(info->mti_object == NULL && check_mdt_object))
4618 if (it_handler_flags & IS_MUTABLE && mdt_rdonly(req->rq_export))
4621 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_INTENT_DELAY, 10);
4623 /* execute policy */
4624 rc = (*it_handler)(it_opc, info, lockp, flags);
4626 /* Check whether the reply has been packed successfully. */
4627 if (req->rq_repmsg != NULL) {
4628 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4629 rep->lock_policy_res2 =
4630 ptlrpc_status_hton(rep->lock_policy_res2);
4636 static void mdt_ptlrpc_stats_update(struct ptlrpc_request *req,
4637 enum ldlm_intent_flags it_opc)
4639 struct lprocfs_stats *srv_stats = ptlrpc_req2svc(req)->srv_stats;
4641 /* update stats when IT code is known */
4642 if (srv_stats != NULL)
4643 lprocfs_counter_incr(srv_stats,
4644 PTLRPC_LAST_CNTR + (it_opc == IT_GLIMPSE ?
4645 LDLM_GLIMPSE_ENQUEUE : LDLM_IBITS_ENQUEUE));
4648 static int mdt_intent_policy(const struct lu_env *env,
4649 struct ldlm_namespace *ns,
4650 struct ldlm_lock **lockp,
4652 enum ldlm_mode mode,
4653 __u64 flags, void *data)
4655 struct tgt_session_info *tsi;
4656 struct mdt_thread_info *info;
4657 struct ptlrpc_request *req = req_cookie;
4658 struct ldlm_intent *it;
4659 struct req_capsule *pill;
4660 const struct ldlm_lock_desc *ldesc;
4665 LASSERT(req != NULL);
4667 tsi = tgt_ses_info(env);
4669 info = tsi2mdt_info(tsi);
4670 LASSERT(info != NULL);
4671 pill = info->mti_pill;
4672 LASSERT(pill->rc_req == req);
4673 ldesc = &info->mti_dlm_req->lock_desc;
4675 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
4676 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
4677 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
4679 mdt_ptlrpc_stats_update(req, it->opc);
4680 rc = mdt_intent_opc(it->opc, info, lockp, flags);
4684 /* Lock without inodebits makes no sense and will oops
4685 * later in ldlm. Let's check it now to see if we have
4686 * ibits corrupted somewhere in mdt_intent_opc().
4687 * The case for client miss to set ibits has been
4688 * processed by others. */
4689 LASSERT(ergo(ldesc->l_resource.lr_type == LDLM_IBITS,
4690 ldesc->l_policy_data.l_inodebits.bits != 0));
4692 rc = err_serious(-EFAULT);
4694 } else if (ldesc->l_resource.lr_type == LDLM_IBITS &&
4695 ldesc->l_policy_data.l_inodebits.bits == MDS_INODELOCK_DOM) {
4696 struct ldlm_reply *rep;
4698 /* No intent was provided but INTENT flag is set along with
4699 * DOM bit, this is considered as GLIMPSE request.
4700 * This logic is common for MDT and OST glimpse
4702 mdt_ptlrpc_stats_update(req, IT_GLIMPSE);
4703 rc = mdt_glimpse_enqueue(info, ns, lockp, flags);
4704 /* Check whether the reply has been packed successfully. */
4705 if (req->rq_repmsg != NULL) {
4706 rep = req_capsule_server_get(info->mti_pill,
4708 rep->lock_policy_res2 =
4709 ptlrpc_status_hton(rep->lock_policy_res2);
4712 /* No intent was provided */
4713 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
4714 rc = req_capsule_server_pack(pill);
4716 rc = err_serious(rc);
4718 mdt_thread_info_fini(info);
4722 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
4724 struct seq_server_site *ss = mdt_seq_site(mdt);
4726 if (ss->ss_node_id == 0)
4729 if (ss->ss_client_seq != NULL) {
4730 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
4731 ss->ss_client_seq->lcs_exp = NULL;
4734 if (ss->ss_server_fld != NULL) {
4735 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
4736 ss->ss_server_fld->lsf_control_exp = NULL;
4740 static void mdt_seq_fini_cli(struct mdt_device *mdt)
4742 struct seq_server_site *ss = mdt_seq_site(mdt);
4747 if (ss->ss_server_seq != NULL)
4748 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
4751 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
4753 mdt_seq_fini_cli(mdt);
4754 mdt_deregister_seq_exp(mdt);
4756 return seq_site_fini(env, mdt_seq_site(mdt));
4760 * It will retrieve its FLDB entries from MDT0, and it only happens
4761 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
4762 * and it needs to refresh FLDB from the MDT0.
4764 static int mdt_register_lwp_callback(void *data)
4767 struct mdt_device *mdt = data;
4768 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
4772 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
4774 rc = lu_env_init(&env, LCT_MD_THREAD);
4776 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
4780 /* Allocate new sequence now to avoid creating local transaction
4781 * in the normal transaction process */
4782 rc = seq_server_check_and_alloc_super(&env,
4783 mdt_seq_site(mdt)->ss_server_seq);
4788 rc = fld_update_from_controller(&env, fld);
4790 CERROR("%s: cannot update controller: rc = %d\n",
4791 mdt_obd_name(mdt), rc);
4800 static int mdt_register_seq_exp(struct mdt_device *mdt)
4802 struct seq_server_site *ss = mdt_seq_site(mdt);
4803 char *lwp_name = NULL;
4806 if (ss->ss_node_id == 0)
4809 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
4810 if (lwp_name == NULL)
4811 GOTO(out_free, rc = -ENOMEM);
4813 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
4817 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
4822 rc = lustre_register_lwp_item(lwp_name,
4823 &ss->ss_server_fld->lsf_control_exp,
4824 mdt_register_lwp_callback, mdt);
4826 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
4827 ss->ss_client_seq->lcs_exp = NULL;
4831 if (lwp_name != NULL)
4832 OBD_FREE(lwp_name, MAX_OBD_NAME);
4838 * Init client sequence manager which is used by local MDS to talk to sequence
4839 * controller on remote node.
4841 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
4843 struct seq_server_site *ss = mdt_seq_site(mdt);
4847 /* check if this is adding the first MDC and controller is not yet
4849 OBD_ALLOC_PTR(ss->ss_client_seq);
4850 if (ss->ss_client_seq == NULL)
4853 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
4854 if (prefix == NULL) {
4855 OBD_FREE_PTR(ss->ss_client_seq);
4856 ss->ss_client_seq = NULL;
4860 /* Note: seq_client_fini will be called in seq_site_fini */
4861 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
4862 seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
4863 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
4865 OBD_FREE(prefix, MAX_OBD_NAME + 5);
4867 RETURN(seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq));
4870 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
4872 struct seq_server_site *ss;
4876 ss = mdt_seq_site(mdt);
4877 /* init sequence controller server(MDT0) */
4878 if (ss->ss_node_id == 0) {
4879 OBD_ALLOC_PTR(ss->ss_control_seq);
4880 if (ss->ss_control_seq == NULL)
4883 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
4884 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
4887 GOTO(out_seq_fini, rc);
4890 /* Init normal sequence server */
4891 OBD_ALLOC_PTR(ss->ss_server_seq);
4892 if (ss->ss_server_seq == NULL)
4893 GOTO(out_seq_fini, rc = -ENOMEM);
4895 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
4896 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
4898 GOTO(out_seq_fini, rc);
4900 /* init seq client for seq server to talk to seq controller(MDT0) */
4901 rc = mdt_seq_init_cli(env, mdt);
4903 GOTO(out_seq_fini, rc);
4905 if (ss->ss_node_id != 0)
4906 /* register controller export through lwp */
4907 rc = mdt_register_seq_exp(mdt);
4912 mdt_seq_fini(env, mdt);
4920 static int mdt_fld_fini(const struct lu_env *env,
4921 struct mdt_device *m)
4923 struct seq_server_site *ss = mdt_seq_site(m);
4926 if (ss && ss->ss_server_fld) {
4927 fld_server_fini(env, ss->ss_server_fld);
4928 OBD_FREE_PTR(ss->ss_server_fld);
4929 ss->ss_server_fld = NULL;
4935 static int mdt_fld_init(const struct lu_env *env,
4937 struct mdt_device *m)
4939 struct seq_server_site *ss;
4943 ss = mdt_seq_site(m);
4945 OBD_ALLOC_PTR(ss->ss_server_fld);
4946 if (ss->ss_server_fld == NULL)
4947 RETURN(rc = -ENOMEM);
4949 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
4952 OBD_FREE_PTR(ss->ss_server_fld);
4953 ss->ss_server_fld = NULL;
4960 static void mdt_stack_pre_fini(const struct lu_env *env,
4961 struct mdt_device *m, struct lu_device *top)
4963 struct lustre_cfg_bufs *bufs;
4964 struct lustre_cfg *lcfg;
4965 struct mdt_thread_info *info;
4970 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4971 LASSERT(info != NULL);
4973 bufs = &info->mti_u.bufs;
4975 LASSERT(m->mdt_child_exp);
4976 LASSERT(m->mdt_child_exp->exp_obd);
4978 /* process cleanup, pass mdt obd name to get obd umount flags */
4979 /* XXX: this is needed because all layers are referenced by
4980 * objects (some of them are pinned by osd, for example *
4981 * the proper solution should be a model where object used
4982 * by osd only doesn't have mdt/mdd slices -bzzz */
4983 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
4984 lustre_cfg_bufs_set_string(bufs, 1, NULL);
4985 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4988 lustre_cfg_init(lcfg, LCFG_PRE_CLEANUP, bufs);
4990 top->ld_ops->ldo_process_config(env, top, lcfg);
4991 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4995 static void mdt_stack_fini(const struct lu_env *env,
4996 struct mdt_device *m, struct lu_device *top)
4998 struct obd_device *obd = mdt2obd_dev(m);
4999 struct lustre_cfg_bufs *bufs;
5000 struct lustre_cfg *lcfg;
5001 struct mdt_thread_info *info;
5005 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5006 LASSERT(info != NULL);
5008 lu_dev_del_linkage(top->ld_site, top);
5010 lu_site_purge(env, top->ld_site, -1);
5012 bufs = &info->mti_u.bufs;
5013 /* process cleanup, pass mdt obd name to get obd umount flags */
5014 /* another purpose is to let all layers to release their objects */
5015 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
5020 lustre_cfg_bufs_set_string(bufs, 1, flags);
5021 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5024 lustre_cfg_init(lcfg, LCFG_CLEANUP, bufs);
5027 top->ld_ops->ldo_process_config(env, top, lcfg);
5028 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5030 lu_site_purge(env, top->ld_site, -1);
5032 m->mdt_child = NULL;
5033 m->mdt_bottom = NULL;
5035 obd_disconnect(m->mdt_child_exp);
5036 m->mdt_child_exp = NULL;
5038 obd_disconnect(m->mdt_bottom_exp);
5039 m->mdt_child_exp = NULL;
5042 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
5043 const char *next, struct obd_export **exp)
5045 struct obd_connect_data *data = NULL;
5046 struct obd_device *obd;
5050 OBD_ALLOC_PTR(data);
5052 GOTO(out, rc = -ENOMEM);
5054 obd = class_name2obd(next);
5056 CERROR("%s: can't locate next device: %s\n",
5057 mdt_obd_name(m), next);
5058 GOTO(out, rc = -ENOTCONN);
5061 data->ocd_connect_flags = OBD_CONNECT_VERSION;
5062 data->ocd_version = LUSTRE_VERSION_CODE;
5064 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
5066 CERROR("%s: cannot connect to next dev %s (%d)\n",
5067 mdt_obd_name(m), next, rc);
5077 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
5078 struct lustre_cfg *cfg)
5080 char *dev = lustre_cfg_string(cfg, 0);
5081 int rc, name_size, uuid_size;
5082 char *name, *uuid, *p;
5083 struct lustre_cfg_bufs *bufs;
5084 struct lustre_cfg *lcfg;
5085 struct obd_device *obd;
5086 struct lustre_profile *lprof;
5087 struct lu_site *site;
5090 /* in 1.8 we had the only device in the stack - MDS.
5091 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
5092 * in 2.3 OSD is instantiated by obd_mount.c, so we need
5093 * to generate names and setup MDT, MDD. MDT will be using
5094 * generated name to connect to MDD. for MDD the next device
5095 * will be LOD with name taken from so called "profile" which
5096 * is generated by mount_option line
5098 * 1.8 MGS generates config. commands like this:
5099 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
5100 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
5101 * 2.0 MGS generates config. commands like this:
5102 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
5103 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
5104 * 3:lustre-MDT0000-mdtlov 4:f
5106 * we generate MDD name from MDT one, just replacing T with D
5108 * after all the preparations, the logical equivalent will be
5109 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
5110 * 3:lustre-MDT0000-mdtlov 4:f
5111 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
5112 * 3:lustre-MDD0000 4:f
5114 * notice we build the stack from down to top: MDD first, then MDT */
5116 name_size = MAX_OBD_NAME;
5117 uuid_size = MAX_OBD_NAME;
5119 OBD_ALLOC(name, name_size);
5120 OBD_ALLOC(uuid, uuid_size);
5121 if (name == NULL || uuid == NULL)
5122 GOTO(cleanup_mem, rc = -ENOMEM);
5124 OBD_ALLOC_PTR(bufs);
5126 GOTO(cleanup_mem, rc = -ENOMEM);
5129 p = strstr(name, "-MDT");
5131 GOTO(free_bufs, rc = -ENOMEM);
5134 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
5136 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
5137 if (lprof == NULL || lprof->lp_dt == NULL) {
5138 CERROR("can't find the profile: %s\n",
5139 lustre_cfg_string(cfg, 0));
5140 GOTO(free_bufs, rc = -EINVAL);
5143 lustre_cfg_bufs_reset(bufs, name);
5144 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
5145 lustre_cfg_bufs_set_string(bufs, 2, uuid);
5146 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
5148 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5150 GOTO(put_profile, rc = -ENOMEM);
5151 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
5153 rc = class_attach(lcfg);
5155 GOTO(lcfg_cleanup, rc);
5157 obd = class_name2obd(name);
5159 CERROR("Can not find obd %s (%s in config)\n",
5160 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
5161 GOTO(lcfg_cleanup, rc = -EINVAL);
5164 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5166 lustre_cfg_bufs_reset(bufs, name);
5167 lustre_cfg_bufs_set_string(bufs, 1, uuid);
5168 lustre_cfg_bufs_set_string(bufs, 2, dev);
5169 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
5171 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5173 GOTO(class_detach, rc = -ENOMEM);
5174 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
5176 rc = class_setup(obd, lcfg);
5178 GOTO(class_detach, rc);
5180 /* connect to MDD we just setup */
5181 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
5183 GOTO(class_detach, rc);
5185 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
5187 LASSERT(mdt_lu_site(mdt) == NULL);
5188 mdt->mdt_lu_dev.ld_site = site;
5189 site->ls_top_dev = &mdt->mdt_lu_dev;
5190 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
5192 /* now connect to bottom OSD */
5193 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
5194 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
5196 GOTO(class_detach, rc);
5198 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
5200 rc = lu_env_refill((struct lu_env *)env);
5202 CERROR("Failure to refill session: '%d'\n", rc);
5204 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
5209 class_detach(obd, lcfg);
5211 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5213 class_put_profile(lprof);
5218 OBD_FREE(name, name_size);
5220 OBD_FREE(uuid, uuid_size);
5224 /* setup quota master target on MDT0 */
5225 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
5226 struct lustre_cfg *cfg)
5228 struct obd_device *obd;
5229 char *dev = lustre_cfg_string(cfg, 0);
5230 char *qmtname, *uuid, *p;
5231 struct lustre_cfg_bufs *bufs;
5232 struct lustre_cfg *lcfg;
5233 struct lustre_profile *lprof;
5234 struct obd_connect_data *data;
5238 LASSERT(mdt->mdt_qmt_exp == NULL);
5239 LASSERT(mdt->mdt_qmt_dev == NULL);
5241 /* quota master is on MDT0 only for now */
5242 if (mdt->mdt_seq_site.ss_node_id != 0)
5245 /* MGS generates config commands which look as follows:
5246 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
5247 * 3:lustre-MDT0000-mdtlov 4:f
5249 * We generate the QMT name from the MDT one, just replacing MD with QM
5250 * after all the preparations, the logical equivalent will be:
5251 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
5252 * 3:lustre-MDT0000-osd 4:f */
5253 OBD_ALLOC(qmtname, MAX_OBD_NAME);
5254 OBD_ALLOC(uuid, UUID_MAX);
5255 OBD_ALLOC_PTR(bufs);
5256 OBD_ALLOC_PTR(data);
5257 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
5258 GOTO(cleanup_mem, rc = -ENOMEM);
5260 strcpy(qmtname, dev);
5261 p = strstr(qmtname, "-MDT");
5263 GOTO(cleanup_mem, rc = -ENOMEM);
5264 /* replace MD with QM */
5268 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
5270 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
5271 if (lprof == NULL || lprof->lp_dt == NULL) {
5272 CERROR("can't find profile for %s\n",
5273 lustre_cfg_string(cfg, 0));
5274 GOTO(cleanup_mem, rc = -EINVAL);
5277 lustre_cfg_bufs_reset(bufs, qmtname);
5278 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
5279 lustre_cfg_bufs_set_string(bufs, 2, uuid);
5280 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
5282 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5284 GOTO(put_profile, rc = -ENOMEM);
5285 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
5287 rc = class_attach(lcfg);
5289 GOTO(lcfg_cleanup, rc);
5291 obd = class_name2obd(qmtname);
5293 CERROR("Can not find obd %s (%s in config)\n", qmtname,
5294 lustre_cfg_string(cfg, 0));
5295 GOTO(lcfg_cleanup, rc = -EINVAL);
5298 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5300 lustre_cfg_bufs_reset(bufs, qmtname);
5301 lustre_cfg_bufs_set_string(bufs, 1, uuid);
5302 lustre_cfg_bufs_set_string(bufs, 2, dev);
5304 /* for quota, the next device should be the OSD device */
5305 lustre_cfg_bufs_set_string(bufs, 3,
5306 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
5308 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5310 GOTO(class_detach, rc = -ENOMEM);
5311 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
5313 rc = class_setup(obd, lcfg);
5315 GOTO(class_detach, rc);
5317 mdt->mdt_qmt_dev = obd->obd_lu_dev;
5319 /* configure local quota objects */
5320 if (OBD_FAIL_CHECK(OBD_FAIL_QUOTA_INIT))
5323 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
5327 GOTO(class_cleanup, rc);
5329 /* connect to quota master target */
5330 data->ocd_connect_flags = OBD_CONNECT_VERSION;
5331 data->ocd_version = LUSTRE_VERSION_CODE;
5332 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
5335 CERROR("cannot connect to quota master device %s (%d)\n",
5337 GOTO(class_cleanup, rc);
5343 class_manual_cleanup(obd);
5344 mdt->mdt_qmt_dev = NULL;
5345 GOTO(lcfg_cleanup, rc);
5349 class_detach(obd, lcfg);
5351 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5353 class_put_profile(lprof);
5358 OBD_FREE(qmtname, MAX_OBD_NAME);
5360 OBD_FREE(uuid, UUID_MAX);
5366 /* Shutdown quota master target associated with mdt */
5367 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
5371 if (mdt->mdt_qmt_exp == NULL)
5373 LASSERT(mdt->mdt_qmt_dev != NULL);
5375 /* the qmt automatically shuts down when the mdt disconnects */
5376 obd_disconnect(mdt->mdt_qmt_exp);
5377 mdt->mdt_qmt_exp = NULL;
5378 mdt->mdt_qmt_dev = NULL;
5382 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
5383 * for now. This will be removed along with converting rest of MDT code
5384 * to use tgt_session_info */
5385 static int mdt_tgt_getxattr(struct tgt_session_info *tsi)
5387 struct mdt_thread_info *info = tsi2mdt_info(tsi);
5390 if (unlikely(info->mti_object == NULL))
5393 rc = mdt_getxattr(info);
5395 mdt_thread_info_fini(info);
5399 static int mdt_llog_open(struct tgt_session_info *tsi)
5403 if (!mdt_is_rootadmin(tsi2mdt_info(tsi)))
5404 RETURN(err_serious(-EACCES));
5406 RETURN(tgt_llog_open(tsi));
5409 #define OBD_FAIL_OST_READ_NET OBD_FAIL_OST_BRW_NET
5410 #define OBD_FAIL_OST_WRITE_NET OBD_FAIL_OST_BRW_NET
5411 #define OST_BRW_READ OST_READ
5412 #define OST_BRW_WRITE OST_WRITE
5414 static struct tgt_handler mdt_tgt_handlers[] = {
5415 TGT_RPC_HANDLER(MDS_FIRST_OPC,
5416 0, MDS_CONNECT, mdt_tgt_connect,
5417 &RQF_CONNECT, LUSTRE_OBD_VERSION),
5418 TGT_RPC_HANDLER(MDS_FIRST_OPC,
5419 0, MDS_DISCONNECT, tgt_disconnect,
5420 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
5421 TGT_RPC_HANDLER(MDS_FIRST_OPC,
5422 HAS_REPLY, MDS_SET_INFO, mdt_set_info,
5423 &RQF_MDT_SET_INFO, LUSTRE_MDS_VERSION),
5424 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
5425 TGT_MDT_HDL(HAS_REPLY, MDS_GET_ROOT, mdt_get_root),
5426 TGT_MDT_HDL(HAS_BODY, MDS_GETATTR, mdt_getattr),
5427 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_GETATTR_NAME,
5429 TGT_MDT_HDL(HAS_BODY, MDS_GETXATTR, mdt_tgt_getxattr),
5430 TGT_MDT_HDL(HAS_REPLY, MDS_STATFS, mdt_statfs),
5431 TGT_MDT_HDL(IS_MUTABLE, MDS_REINT, mdt_reint),
5432 TGT_MDT_HDL(HAS_BODY, MDS_CLOSE, mdt_close),
5433 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_READPAGE, mdt_readpage),
5434 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_SYNC, mdt_sync),
5435 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
5436 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_PROGRESS,
5438 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_CT_REGISTER,
5439 mdt_hsm_ct_register),
5440 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_CT_UNREGISTER,
5441 mdt_hsm_ct_unregister),
5442 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_STATE_GET,
5444 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_STATE_SET,
5446 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_ACTION, mdt_hsm_action),
5447 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_REQUEST,
5449 TGT_MDT_HDL(HAS_KEY | HAS_BODY | HAS_REPLY | IS_MUTABLE,
5452 TGT_MDT_HDL(IS_MUTABLE, MDS_RMFID, mdt_rmfid),
5455 static struct tgt_handler mdt_io_ops[] = {
5456 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY, OST_BRW_READ, tgt_brw_read,
5458 TGT_OST_HDL_HP(HAS_BODY | IS_MUTABLE, OST_BRW_WRITE, tgt_brw_write,
5460 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY | IS_MUTABLE,
5461 OST_PUNCH, mdt_punch_hdl,
5463 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_SYNC, mdt_data_sync),
5464 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_SEEK, tgt_lseek),
5467 static struct tgt_handler mdt_sec_ctx_ops[] = {
5468 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
5469 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
5470 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
5473 static struct tgt_handler mdt_quota_ops[] = {
5474 TGT_QUOTA_HDL(HAS_REPLY, QUOTA_DQACQ, mdt_quota_dqacq),
5477 static struct tgt_handler mdt_llog_handlers[] = {
5478 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_CREATE, mdt_llog_open),
5479 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
5480 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
5481 TGT_LLOG_HDL(0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
5484 static struct tgt_opc_slice mdt_common_slice[] = {
5486 .tos_opc_start = MDS_FIRST_OPC,
5487 .tos_opc_end = MDS_LAST_OPC,
5488 .tos_hs = mdt_tgt_handlers
5491 .tos_opc_start = OBD_FIRST_OPC,
5492 .tos_opc_end = OBD_LAST_OPC,
5493 .tos_hs = tgt_obd_handlers
5496 .tos_opc_start = LDLM_FIRST_OPC,
5497 .tos_opc_end = LDLM_LAST_OPC,
5498 .tos_hs = tgt_dlm_handlers
5501 .tos_opc_start = SEC_FIRST_OPC,
5502 .tos_opc_end = SEC_LAST_OPC,
5503 .tos_hs = mdt_sec_ctx_ops
5506 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
5507 .tos_opc_end = OUT_UPDATE_LAST_OPC,
5508 .tos_hs = tgt_out_handlers
5511 .tos_opc_start = FLD_FIRST_OPC,
5512 .tos_opc_end = FLD_LAST_OPC,
5513 .tos_hs = fld_handlers
5516 .tos_opc_start = SEQ_FIRST_OPC,
5517 .tos_opc_end = SEQ_LAST_OPC,
5518 .tos_hs = seq_handlers
5521 .tos_opc_start = QUOTA_DQACQ,
5522 .tos_opc_end = QUOTA_LAST_OPC,
5523 .tos_hs = mdt_quota_ops
5526 .tos_opc_start = LLOG_FIRST_OPC,
5527 .tos_opc_end = LLOG_LAST_OPC,
5528 .tos_hs = mdt_llog_handlers
5531 .tos_opc_start = LFSCK_FIRST_OPC,
5532 .tos_opc_end = LFSCK_LAST_OPC,
5533 .tos_hs = tgt_lfsck_handlers
5536 .tos_opc_start = OST_FIRST_OPC,
5537 .tos_opc_end = OST_LAST_OPC,
5538 .tos_hs = mdt_io_ops
5545 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
5547 struct md_device *next = m->mdt_child;
5548 struct lu_device *d = &m->mdt_lu_dev;
5549 struct obd_device *obd = mdt2obd_dev(m);
5550 struct lfsck_stop stop;
5553 stop.ls_status = LS_PAUSED;
5555 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
5557 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
5559 mdt_restriper_stop(m);
5560 ping_evictor_stop();
5562 /* Remove the HSM /proc entry so the coordinator cannot be
5563 * restarted by a user while it's shutting down.
5565 mdt_hsm_cdt_stop(m);
5567 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
5568 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
5570 if (m->mdt_namespace != NULL)
5571 ldlm_namespace_free_prior(m->mdt_namespace, NULL,
5572 d->ld_obd->obd_force);
5574 obd_exports_barrier(obd);
5575 obd_zombie_barrier();
5577 mdt_quota_fini(env, m);
5579 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
5581 /* Calling the cleanup functions in the same order as in the mdt_init0
5584 mdt_tunables_fini(m);
5586 target_recovery_fini(obd);
5587 upcall_cache_cleanup(m->mdt_identity_cache);
5588 m->mdt_identity_cache = NULL;
5590 mdt_fs_cleanup(env, m);
5592 tgt_fini(env, &m->mdt_lut);
5594 mdt_hsm_cdt_fini(m);
5596 if (m->mdt_los != NULL) {
5597 local_oid_storage_fini(env, m->mdt_los);
5601 if (m->mdt_namespace != NULL) {
5602 ldlm_namespace_free_post(m->mdt_namespace);
5603 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
5606 if (m->mdt_md_root != NULL) {
5607 mdt_object_put(env, m->mdt_md_root);
5608 m->mdt_md_root = NULL;
5611 mdt_seq_fini(env, m);
5613 mdt_fld_fini(env, m);
5618 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5620 LASSERT(atomic_read(&d->ld_ref) == 0);
5622 server_put_mount(mdt_obd_name(m), true);
5627 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
5629 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
5630 struct lu_device_type *ldt, struct lustre_cfg *cfg)
5632 const struct dt_device_param *dt_conf;
5633 struct mdt_thread_info *info;
5634 struct obd_device *obd;
5635 const char *dev = lustre_cfg_string(cfg, 0);
5636 const char *num = lustre_cfg_string(cfg, 2);
5637 struct tg_grants_data *tgd = &m->mdt_lut.lut_tgd;
5638 struct lustre_mount_info *lmi = NULL;
5639 struct lustre_sb_info *lsi;
5641 struct seq_server_site *ss_site;
5642 const char *identity_upcall = "NONE";
5643 struct md_device *next;
5650 lu_device_init(&m->mdt_lu_dev, ldt);
5652 * Environment (env) might be missing mdt_thread_key values at that
5653 * point, if device is allocated when mdt_thread_key is in QUIESCENT
5656 * Usually device allocation path doesn't use module key values, but
5657 * mdt has to do a lot of work here, so allocate key value.
5659 rc = lu_env_refill((struct lu_env *)env);
5663 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5664 LASSERT(info != NULL);
5666 obd = class_name2obd(dev);
5667 LASSERT(obd != NULL);
5669 m->mdt_max_mdsize = MAX_MD_SIZE_OLD;
5670 m->mdt_opts.mo_evict_tgt_nids = 1;
5671 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
5673 lmi = server_get_mount(dev);
5675 CERROR("Cannot get mount info for %s!\n", dev);
5678 lsi = s2lsi(lmi->lmi_sb);
5679 LASSERT(lsi->lsi_lmd);
5680 /* CMD is supported only in IAM mode */
5682 rc = kstrtol(num, 10, &node_id);
5686 obd->u.obt.obt_magic = OBT_MAGIC;
5687 if (lsi->lsi_lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
5688 m->mdt_skip_lfsck = 1;
5691 /* Just try to get a DoM lock by default. Otherwise, having a group
5692 * lock granted, it may get blocked for a long time. */
5693 m->mdt_opts.mo_dom_lock = TRYLOCK_DOM_ON_OPEN;
5694 /* DoM files are read at open and data is packed in the reply */
5695 m->mdt_opts.mo_dom_read_open = 1;
5697 m->mdt_squash.rsi_uid = 0;
5698 m->mdt_squash.rsi_gid = 0;
5699 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
5700 spin_lock_init(&m->mdt_squash.rsi_lock);
5701 spin_lock_init(&m->mdt_lock);
5702 m->mdt_enable_remote_dir = 1;
5703 m->mdt_enable_striped_dir = 1;
5704 m->mdt_enable_dir_migration = 1;
5705 m->mdt_enable_dir_restripe = 0;
5706 m->mdt_enable_dir_auto_split = 0;
5707 m->mdt_enable_remote_dir_gid = 0;
5708 m->mdt_enable_chprojid_gid = 0;
5709 m->mdt_enable_remote_rename = 1;
5710 m->mdt_dir_restripe_nsonly = 1;
5711 m->mdt_enable_remote_subdir_mount = 1;
5713 atomic_set(&m->mdt_mds_mds_conns, 0);
5714 atomic_set(&m->mdt_async_commit_count, 0);
5716 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
5717 m->mdt_lu_dev.ld_obd = obd;
5718 /* Set this lu_device to obd for error handling purposes. */
5719 obd->obd_lu_dev = &m->mdt_lu_dev;
5721 /* init the stack */
5722 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
5724 CERROR("%s: Can't init device stack, rc %d\n",
5725 mdt_obd_name(m), rc);
5730 ss_site = mdt_seq_site(m);
5731 s->ld_seq_site = ss_site;
5734 /* set server index */
5735 ss_site->ss_node_id = node_id;
5737 /* failover is the default
5738 * FIXME: we do not failout mds0/mgs, which may cause some problems.
5739 * assumed whose ss_node_id == 0 XXX
5741 obd->obd_replayable = 1;
5742 /* No connection accepted until configurations will finish */
5743 obd->obd_no_conn = 1;
5745 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
5746 char *str = lustre_cfg_string(cfg, 4);
5747 if (strchr(str, 'n')) {
5748 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
5749 obd->obd_replayable = 0;
5753 rc = mdt_fld_init(env, mdt_obd_name(m), m);
5755 GOTO(err_fini_stack, rc);
5757 rc = mdt_seq_init(env, m);
5759 GOTO(err_fini_fld, rc);
5761 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
5762 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
5763 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
5764 LDLM_NAMESPACE_SERVER,
5765 LDLM_NAMESPACE_GREEDY,
5767 if (IS_ERR(m->mdt_namespace)) {
5768 rc = PTR_ERR(m->mdt_namespace);
5769 CERROR("%s: unable to create server namespace: rc = %d\n",
5771 m->mdt_namespace = NULL;
5772 GOTO(err_fini_seq, rc);
5775 m->mdt_namespace->ns_lvbp = m;
5776 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
5778 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
5779 /* set obd_namespace for compatibility with old code */
5780 obd->obd_namespace = m->mdt_namespace;
5782 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
5783 OBD_FAIL_MDS_ALL_REQUEST_NET,
5784 OBD_FAIL_MDS_ALL_REPLY_NET);
5786 GOTO(err_free_ns, rc);
5788 /* Amount of available space excluded from granting and reserved
5789 * for metadata. It is a percentage of the total MDT size. */
5790 tgd->tgd_reserved_pcnt = 10;
5792 if (ONE_MB_BRW_SIZE < (1U << tgd->tgd_blockbits))
5793 m->mdt_brw_size = 1U << tgd->tgd_blockbits;
5795 m->mdt_brw_size = ONE_MB_BRW_SIZE;
5797 rc = mdt_fs_setup(env, m, obd, lsi);
5801 fid.f_seq = FID_SEQ_LOCAL_NAME;
5804 rc = local_oid_storage_init(env, m->mdt_bottom, &fid, &m->mdt_los);
5806 GOTO(err_fs_cleanup, rc);
5808 rc = mdt_hsm_cdt_init(m);
5810 CERROR("%s: error initializing coordinator, rc %d\n",
5811 mdt_obd_name(m), rc);
5812 GOTO(err_los_fini, rc);
5815 tgt_adapt_sptlrpc_conf(&m->mdt_lut);
5817 next = m->mdt_child;
5818 dt_conf = next->md_ops->mdo_dtconf_get(env, next);
5820 mntopts = dt_conf->ddp_mntopts;
5822 if (mntopts & MNTOPT_USERXATTR)
5823 m->mdt_opts.mo_user_xattr = 1;
5825 m->mdt_opts.mo_user_xattr = 0;
5827 m->mdt_max_ea_size = dt_conf->ddp_max_ea_size;
5829 if (mntopts & MNTOPT_ACL)
5830 m->mdt_opts.mo_acl = 1;
5832 m->mdt_opts.mo_acl = 0;
5834 /* XXX: to support suppgid for ACL, we enable identity_upcall
5835 * by default, otherwise, maybe got unexpected -EACCESS. */
5836 if (m->mdt_opts.mo_acl)
5837 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
5839 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
5841 &mdt_identity_upcall_cache_ops);
5842 if (IS_ERR(m->mdt_identity_cache)) {
5843 rc = PTR_ERR(m->mdt_identity_cache);
5844 m->mdt_identity_cache = NULL;
5845 GOTO(err_free_hsm, rc);
5848 rc = mdt_tunables_init(m, dev);
5850 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
5851 GOTO(err_recovery, rc);
5854 rc = mdt_quota_init(env, m, cfg);
5856 GOTO(err_procfs, rc);
5858 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
5859 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
5860 "mdt_ldlm_client", m->mdt_ldlm_client);
5862 ping_evictor_start();
5864 /* recovery will be started upon mdt_prepare()
5865 * when the whole stack is complete and ready
5866 * to serve the requests */
5868 /* Reduce the initial timeout on an MDS because it doesn't need such
5869 * a long timeout as an OST does. Adaptive timeouts will adjust this
5870 * value appropriately. */
5871 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
5872 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
5874 if ((lsi->lsi_lmd->lmd_flags & LMD_FLG_LOCAL_RECOV))
5875 m->mdt_lut.lut_local_recovery = 1;
5877 rc = mdt_restriper_start(m);
5879 GOTO(err_ping_evictor, rc);
5884 ping_evictor_stop();
5886 mdt_tunables_fini(m);
5888 upcall_cache_cleanup(m->mdt_identity_cache);
5889 m->mdt_identity_cache = NULL;
5891 mdt_hsm_cdt_fini(m);
5893 local_oid_storage_fini(env, m->mdt_los);
5896 mdt_fs_cleanup(env, m);
5898 /* keep recoverable clients */
5900 target_recovery_fini(obd);
5901 obd_exports_barrier(obd);
5902 obd_zombie_barrier();
5903 tgt_fini(env, &m->mdt_lut);
5905 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
5906 obd->obd_namespace = m->mdt_namespace = NULL;
5908 mdt_seq_fini(env, m);
5910 mdt_fld_fini(env, m);
5912 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5915 server_put_mount(dev, true);
5919 /* For interoperability, the left element is old parameter, the right one
5920 * is the new version of the parameter, if some parameter is deprecated,
5921 * the new version should be set as NULL. */
5922 static struct cfg_interop_param mdt_interop_param[] = {
5923 { "mdt.group_upcall", NULL },
5924 { "mdt.quota_type", NULL },
5925 { "mdd.quota_type", NULL },
5926 { "mdt.som", NULL },
5927 { "mdt.rootsquash", "mdt.root_squash" },
5928 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
5932 /* used by MGS to process specific configurations */
5933 static int mdt_process_config(const struct lu_env *env,
5934 struct lu_device *d, struct lustre_cfg *cfg)
5936 struct mdt_device *m = mdt_dev(d);
5937 struct md_device *md_next = m->mdt_child;
5938 struct lu_device *next = md2lu_dev(md_next);
5942 switch (cfg->lcfg_command) {
5944 struct obd_device *obd = d->ld_obd;
5945 /* For interoperability */
5946 struct cfg_interop_param *ptr = NULL;
5947 struct lustre_cfg *old_cfg = NULL;
5951 param = lustre_cfg_string(cfg, 1);
5952 if (param == NULL) {
5953 CERROR("param is empty\n");
5958 ptr = class_find_old_param(param, mdt_interop_param);
5960 if (ptr->new_param == NULL) {
5962 CWARN("For interoperability, skip this %s."
5963 " It is obsolete.\n", ptr->old_param);
5967 CWARN("Found old param %s, changed it to %s.\n",
5968 ptr->old_param, ptr->new_param);
5971 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
5978 count = class_modify_config(cfg, PARAM_MDT,
5979 &obd->obd_kset.kobj);
5981 struct coordinator *cdt = &m->mdt_coordinator;
5983 /* is it an HSM var ? */
5984 count = class_modify_config(cfg, PARAM_HSM,
5985 &cdt->cdt_hsm_kobj);
5987 /* we don't understand; pass it on */
5988 rc = next->ld_ops->ldo_process_config(env, next,
5991 rc = count > 0 ? 0 : count;
5993 rc = count > 0 ? 0 : count;
5997 OBD_FREE(cfg, lustre_cfg_len(cfg->lcfg_bufcount,
5998 cfg->lcfg_buflens));
6002 /* others are passed further */
6003 rc = next->ld_ops->ldo_process_config(env, next, cfg);
6009 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
6010 const struct lu_object_header *hdr,
6011 struct lu_device *d)
6013 struct mdt_object *mo;
6017 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
6019 struct lu_object *o;
6020 struct lu_object_header *h;
6023 h = &mo->mot_header;
6024 lu_object_header_init(h);
6025 lu_object_init(o, h, d);
6026 lu_object_add_top(h, o);
6027 o->lo_ops = &mdt_obj_ops;
6028 spin_lock_init(&mo->mot_write_lock);
6029 mutex_init(&mo->mot_som_mutex);
6030 mutex_init(&mo->mot_lov_mutex);
6031 init_rwsem(&mo->mot_dom_sem);
6032 init_rwsem(&mo->mot_open_sem);
6033 atomic_set(&mo->mot_open_count, 0);
6034 mo->mot_restripe_offset = 0;
6035 INIT_LIST_HEAD(&mo->mot_restripe_linkage);
6041 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
6042 const struct lu_object_conf *unused)
6044 struct mdt_device *d = mdt_dev(o->lo_dev);
6045 struct lu_device *under;
6046 struct lu_object *below;
6050 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
6051 PFID(lu_object_fid(o)));
6053 under = &d->mdt_child->md_lu_dev;
6054 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
6055 if (below != NULL) {
6056 lu_object_add(o, below);
6063 static void mdt_object_free_rcu(struct rcu_head *head)
6065 struct mdt_object *mo = container_of(head, struct mdt_object,
6066 mot_header.loh_rcu);
6068 kmem_cache_free(mdt_object_kmem, mo);
6071 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
6073 struct mdt_object *mo = mdt_obj(o);
6074 struct lu_object_header *h;
6078 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
6079 PFID(lu_object_fid(o)));
6081 LASSERT(atomic_read(&mo->mot_open_count) == 0);
6082 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
6085 lu_object_header_fini(h);
6086 OBD_FREE_PRE(mo, sizeof(*mo), "slab-freed");
6087 call_rcu(&mo->mot_header.loh_rcu, mdt_object_free_rcu);
6092 static int mdt_object_print(const struct lu_env *env, void *cookie,
6093 lu_printer_t p, const struct lu_object *o)
6095 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
6097 return (*p)(env, cookie,
6098 LUSTRE_MDT_NAME"-object@%p(%s %s, writecount=%d)",
6099 mdto, mdto->mot_lov_created ? "lov_created" : "",
6100 mdto->mot_cache_attr ? "cache_attr" : "",
6101 mdto->mot_write_count);
6104 static int mdt_prepare(const struct lu_env *env,
6105 struct lu_device *pdev,
6106 struct lu_device *cdev)
6108 struct mdt_device *mdt = mdt_dev(cdev);
6109 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
6110 struct obd_device *obd = cdev->ld_obd;
6117 rc = next->ld_ops->ldo_prepare(env, cdev, next);
6121 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
6125 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
6129 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
6130 /* The LFSCK instance is registered just now, so it must be there when
6131 * register the namespace to such instance. */
6132 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
6134 if (mdt->mdt_seq_site.ss_node_id == 0) {
6135 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
6136 &mdt->mdt_md_root_fid);
6141 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
6143 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
6144 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
6145 LASSERT(obd->obd_no_conn);
6146 spin_lock(&obd->obd_dev_lock);
6147 obd->obd_no_conn = 0;
6148 spin_unlock(&obd->obd_dev_lock);
6150 if (obd->obd_recovering == 0)
6151 mdt_postrecov(env, mdt);
6156 const struct lu_device_operations mdt_lu_ops = {
6157 .ldo_object_alloc = mdt_object_alloc,
6158 .ldo_process_config = mdt_process_config,
6159 .ldo_prepare = mdt_prepare,
6162 static const struct lu_object_operations mdt_obj_ops = {
6163 .loo_object_init = mdt_object_init,
6164 .loo_object_free = mdt_object_free,
6165 .loo_object_print = mdt_object_print
6168 static int mdt_obd_set_info_async(const struct lu_env *env,
6169 struct obd_export *exp,
6170 __u32 keylen, void *key,
6171 __u32 vallen, void *val,
6172 struct ptlrpc_request_set *set)
6178 if (KEY_IS(KEY_SPTLRPC_CONF)) {
6179 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp));
6186 static inline void mdt_enable_slc(struct mdt_device *mdt)
6188 if (mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_NEVER)
6189 mdt->mdt_lut.lut_sync_lock_cancel = SYNC_LOCK_CANCEL_BLOCKING;
6192 static inline void mdt_disable_slc(struct mdt_device *mdt)
6194 if (mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_BLOCKING)
6195 mdt->mdt_lut.lut_sync_lock_cancel = SYNC_LOCK_CANCEL_NEVER;
6199 * Match client and server connection feature flags.
6201 * Compute the compatibility flags for a connection request based on
6202 * features mutually supported by client and server.
6204 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
6205 * must not be updated here, otherwise a partially initialized value may
6206 * be exposed. After the connection request is successfully processed,
6207 * the top-level MDT connect request handler atomically updates the export
6208 * connect flags from the obd_connect_data::ocd_connect_flags field of the
6209 * reply. \see mdt_connect().
6211 * Before 2.7.50 clients will send a struct obd_connect_data_v1 rather than a
6212 * full struct obd_connect_data. So care must be taken when accessing fields
6213 * that are not present in struct obd_connect_data_v1. See LU-16.
6215 * \param exp the obd_export associated with this client/target pair
6216 * \param mdt the target device for the connection
6217 * \param data stores data for this connect request
6220 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
6221 * \retval -EBADE client and server feature requirements are incompatible
6223 static int mdt_connect_internal(const struct lu_env *env,
6224 struct obd_export *exp,
6225 struct mdt_device *mdt,
6226 struct obd_connect_data *data, bool reconnect)
6228 const char *obd_name = mdt_obd_name(mdt);
6229 LASSERT(data != NULL);
6231 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
6233 if (mdt->mdt_bottom->dd_rdonly &&
6234 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
6235 !(data->ocd_connect_flags & OBD_CONNECT_RDONLY))
6238 if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
6239 data->ocd_connect_flags2 &= MDT_CONNECT_SUPPORTED2;
6241 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
6243 if (!mdt->mdt_opts.mo_acl)
6244 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
6246 if (!mdt->mdt_opts.mo_user_xattr)
6247 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
6249 if (OCD_HAS_FLAG(data, BRW_SIZE)) {
6250 data->ocd_brw_size = min(data->ocd_brw_size,
6252 if (data->ocd_brw_size == 0) {
6253 CERROR("%s: cli %s/%p ocd_connect_flags: %#llx "
6254 "ocd_version: %x ocd_grant: %d ocd_index: %u "
6255 "ocd_brw_size unexpectedly zero, network data "
6256 "corruption? Refusing to connect this client\n",
6257 obd_name, exp->exp_client_uuid.uuid,
6258 exp, data->ocd_connect_flags, data->ocd_version,
6259 data->ocd_grant, data->ocd_index);
6264 if (OCD_HAS_FLAG(data, GRANT_PARAM)) {
6265 struct dt_device_param *ddp = &mdt->mdt_lut.lut_dt_conf;
6267 /* client is reporting its page size, for future use */
6268 exp->exp_target_data.ted_pagebits = data->ocd_grant_blkbits;
6269 data->ocd_grant_blkbits = mdt->mdt_lut.lut_tgd.tgd_blockbits;
6270 /* ddp_inodespace may not be power-of-two value, eg. for ldiskfs
6271 * it's LDISKFS_DIR_REC_LEN(20) = 28. */
6272 data->ocd_grant_inobits = fls(ddp->ddp_inodespace - 1);
6273 /* ocd_grant_tax_kb is in 1K byte blocks */
6274 data->ocd_grant_tax_kb = ddp->ddp_extent_tax >> 10;
6275 data->ocd_grant_max_blks = ddp->ddp_max_extent_blks;
6278 /* Save connect_data we have so far because tgt_grant_connect()
6279 * uses it to calculate grant, and we want to save the client
6280 * version before it is overwritten by LUSTRE_VERSION_CODE. */
6281 exp->exp_connect_data = *data;
6282 if (OCD_HAS_FLAG(data, GRANT))
6283 tgt_grant_connect(env, exp, data, !reconnect);
6285 if (OCD_HAS_FLAG(data, MAXBYTES))
6286 data->ocd_maxbytes = mdt->mdt_lut.lut_dt_conf.ddp_maxbytes;
6288 /* NB: Disregard the rule against updating
6289 * exp_connect_data.ocd_connect_flags in this case, since
6290 * tgt_client_new() needs to know if this is a lightweight
6291 * connection, and it is safe to expose this flag before
6292 * connection processing completes. */
6293 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
6294 spin_lock(&exp->exp_lock);
6295 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
6296 spin_unlock(&exp->exp_lock);
6299 data->ocd_version = LUSTRE_VERSION_CODE;
6301 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
6302 CWARN("%s: MDS requires FID support, but client not\n",
6307 if (OCD_HAS_FLAG(data, PINGLESS)) {
6308 if (ptlrpc_pinger_suppress_pings()) {
6309 spin_lock(&exp->exp_obd->obd_dev_lock);
6310 list_del_init(&exp->exp_obd_chain_timed);
6311 spin_unlock(&exp->exp_obd->obd_dev_lock);
6313 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
6317 data->ocd_max_easize = mdt->mdt_max_ea_size;
6319 /* NB: Disregard the rule against updating
6320 * exp_connect_data.ocd_connect_flags in this case, since
6321 * tgt_client_new() needs to know if this is client supports
6322 * multiple modify RPCs, and it is safe to expose this flag before
6323 * connection processing completes. */
6324 if (data->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS) {
6325 data->ocd_maxmodrpcs = max_mod_rpcs_per_client;
6326 spin_lock(&exp->exp_lock);
6327 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_MULTIMODRPCS;
6328 spin_unlock(&exp->exp_lock);
6331 if (OCD_HAS_FLAG(data, CKSUM)) {
6332 __u32 cksum_types = data->ocd_cksum_types;
6334 tgt_mask_cksum_types(&mdt->mdt_lut, &data->ocd_cksum_types);
6336 if (unlikely(data->ocd_cksum_types == 0)) {
6337 CERROR("%s: Connect with checksum support but no "
6338 "ocd_cksum_types is set\n",
6339 exp->exp_obd->obd_name);
6343 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
6344 "%x\n", exp->exp_obd->obd_name, obd_export_nid2str(exp),
6345 cksum_types, data->ocd_cksum_types);
6347 /* This client does not support OBD_CONNECT_CKSUM
6348 * fall back to CRC32 */
6349 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
6350 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
6351 exp->exp_obd->obd_name, obd_export_nid2str(exp));
6354 if ((data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
6355 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
6356 atomic_inc(&mdt->mdt_mds_mds_conns);
6357 mdt_enable_slc(mdt);
6360 if (!mdt->mdt_lut.lut_dt_conf.ddp_has_lseek_data_hole)
6361 data->ocd_connect_flags2 &= ~OBD_CONNECT2_LSEEK;
6366 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
6367 struct mdt_thread_info *info,
6368 struct mdt_file_data *mfd)
6370 struct lu_context ses;
6374 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
6379 lu_context_enter(&ses);
6381 mdt_ucred(info)->uc_valid = UCRED_OLD;
6382 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
6384 lu_context_exit(&ses);
6385 lu_context_fini(&ses);
6391 static int mdt_export_cleanup(struct obd_export *exp)
6393 LIST_HEAD(closing_list);
6394 struct mdt_export_data *med = &exp->exp_mdt_data;
6395 struct obd_device *obd = exp->exp_obd;
6396 struct mdt_device *mdt;
6397 struct mdt_thread_info *info;
6399 struct mdt_file_data *mfd, *n;
6403 spin_lock(&med->med_open_lock);
6404 while (!list_empty(&med->med_open_head)) {
6405 struct list_head *tmp = med->med_open_head.next;
6406 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
6408 /* Remove mfd handle so it can't be found again.
6409 * We are consuming the mfd_list reference here. */
6410 class_handle_unhash(&mfd->mfd_open_handle);
6411 list_move_tail(&mfd->mfd_list, &closing_list);
6413 spin_unlock(&med->med_open_lock);
6414 mdt = mdt_dev(obd->obd_lu_dev);
6415 LASSERT(mdt != NULL);
6417 rc = lu_env_init(&env, LCT_MD_THREAD);
6421 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6422 LASSERT(info != NULL);
6423 memset(info, 0, sizeof *info);
6424 info->mti_env = &env;
6425 info->mti_mdt = mdt;
6426 info->mti_exp = exp;
6428 if (!list_empty(&closing_list)) {
6429 struct md_attr *ma = &info->mti_attr;
6431 /* Close any open files (which may also cause orphan
6433 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
6434 list_del_init(&mfd->mfd_list);
6435 ma->ma_need = ma->ma_valid = 0;
6437 /* This file is being closed due to an eviction, it
6438 * could have been modified and now dirty regarding to
6439 * HSM archive, check this!
6440 * The logic here is to mark a file dirty if there's a
6441 * chance it was dirtied before the client was evicted,
6442 * so that we don't have to wait for a release attempt
6443 * before finding out the file was actually dirty and
6444 * fail the release. Aggressively marking it dirty here
6445 * will cause the policy engine to attempt to
6446 * re-archive it; when rearchiving, we can compare the
6447 * current version to the HSM data_version and make the
6448 * archive request into a noop if it's not actually
6451 if (mfd->mfd_open_flags & MDS_FMODE_WRITE)
6452 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
6454 /* Don't unlink orphan on failover umount, LU-184 */
6455 if (exp->exp_flags & OBD_OPT_FAILOVER) {
6456 ma->ma_valid = MA_FLAGS;
6457 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
6459 ma->ma_valid |= MA_FORCE_LOG;
6460 mdt_mfd_close(info, mfd);
6463 info->mti_mdt = NULL;
6464 /* cleanup client slot early */
6465 /* Do not erase record for recoverable client. */
6466 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
6467 tgt_client_del(&env, exp);
6473 static int mdt_obd_disconnect(struct obd_export *exp)
6480 class_export_get(exp);
6482 if (!(exp->exp_flags & OBD_OPT_FORCE))
6483 tgt_grant_sanity_check(exp->exp_obd, __func__);
6485 if ((exp_connect_flags(exp) & OBD_CONNECT_MDS_MDS) &&
6486 !(exp_connect_flags(exp) & OBD_CONNECT_LIGHTWEIGHT)) {
6487 struct mdt_device *mdt = mdt_dev(exp->exp_obd->obd_lu_dev);
6489 if (atomic_dec_and_test(&mdt->mdt_mds_mds_conns))
6490 mdt_disable_slc(mdt);
6493 rc = server_disconnect_export(exp);
6495 CDEBUG(D_IOCTL, "server disconnect error: rc = %d\n", rc);
6497 tgt_grant_discard(exp);
6499 rc = mdt_export_cleanup(exp);
6500 nodemap_del_member(exp);
6501 class_export_put(exp);
6505 /* mds_connect copy */
6506 static int mdt_obd_connect(const struct lu_env *env,
6507 struct obd_export **exp, struct obd_device *obd,
6508 struct obd_uuid *cluuid,
6509 struct obd_connect_data *data,
6512 struct obd_export *lexp;
6513 struct lustre_handle conn = { 0 };
6514 struct mdt_device *mdt;
6516 lnet_nid_t *client_nid = localdata;
6519 LASSERT(env != NULL);
6520 LASSERT(data != NULL);
6522 if (!exp || !obd || !cluuid)
6525 mdt = mdt_dev(obd->obd_lu_dev);
6528 * first, check whether the stack is ready to handle requests
6529 * XXX: probably not very appropriate method is used now
6530 * at some point we should find a better one
6532 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) &&
6533 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) &&
6534 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
6535 rc = obd_get_info(env, mdt->mdt_child_exp,
6536 sizeof(KEY_OSP_CONNECTED),
6537 KEY_OSP_CONNECTED, NULL, NULL);
6540 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
6543 rc = class_connect(&conn, obd, cluuid);
6547 lexp = class_conn2export(&conn);
6548 LASSERT(lexp != NULL);
6550 rc = nodemap_add_member(*client_nid, lexp);
6551 if (rc != 0 && rc != -EEXIST)
6554 rc = mdt_connect_internal(env, lexp, mdt, data, false);
6556 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
6559 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
6560 rc = tgt_client_new(env, lexp);
6562 mdt_export_stats_init(obd, lexp, localdata);
6566 class_disconnect(lexp);
6567 nodemap_del_member(lexp);
6571 /* Because we do not want this export to be evicted by pinger,
6572 * let's not add this export to the timed chain list. */
6573 if (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) {
6574 spin_lock(&lexp->exp_obd->obd_dev_lock);
6575 list_del_init(&lexp->exp_obd_chain_timed);
6576 spin_unlock(&lexp->exp_obd->obd_dev_lock);
6583 static int mdt_obd_reconnect(const struct lu_env *env,
6584 struct obd_export *exp, struct obd_device *obd,
6585 struct obd_uuid *cluuid,
6586 struct obd_connect_data *data,
6589 lnet_nid_t *client_nid = localdata;
6593 if (exp == NULL || obd == NULL || cluuid == NULL)
6596 rc = nodemap_add_member(*client_nid, exp);
6597 if (rc != 0 && rc != -EEXIST)
6600 rc = mdt_connect_internal(env, exp, mdt_dev(obd->obd_lu_dev), data,
6603 mdt_export_stats_init(obd, exp, localdata);
6605 nodemap_del_member(exp);
6610 /* FIXME: Can we avoid using these two interfaces? */
6611 static int mdt_init_export(struct obd_export *exp)
6613 struct mdt_export_data *med = &exp->exp_mdt_data;
6617 INIT_LIST_HEAD(&med->med_open_head);
6618 spin_lock_init(&med->med_open_lock);
6619 spin_lock(&exp->exp_lock);
6620 exp->exp_connecting = 1;
6621 spin_unlock(&exp->exp_lock);
6623 OBD_ALLOC(exp->exp_used_slots,
6624 BITS_TO_LONGS(OBD_MAX_RIF_MAX) * sizeof(long));
6625 if (exp->exp_used_slots == NULL)
6628 /* self-export doesn't need client data and ldlm initialization */
6629 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
6630 &exp->exp_client_uuid)))
6633 rc = tgt_client_alloc(exp);
6637 rc = ldlm_init_export(exp);
6644 tgt_client_free(exp);
6646 OBD_FREE(exp->exp_used_slots,
6647 BITS_TO_LONGS(OBD_MAX_RIF_MAX) * sizeof(long));
6648 exp->exp_used_slots = NULL;
6650 CERROR("%s: Failed to initialize export: rc = %d\n",
6651 exp->exp_obd->obd_name, rc);
6655 static int mdt_destroy_export(struct obd_export *exp)
6659 target_destroy_export(exp);
6660 if (exp->exp_used_slots)
6661 OBD_FREE(exp->exp_used_slots,
6662 BITS_TO_LONGS(OBD_MAX_RIF_MAX) * sizeof(long));
6664 /* destroy can be called from failed obd_setup, so
6665 * checking uuid is safer than obd_self_export */
6666 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
6667 &exp->exp_client_uuid)))
6670 ldlm_destroy_export(exp);
6671 tgt_client_free(exp);
6673 LASSERT(list_empty(&exp->exp_outstanding_replies));
6674 LASSERT(list_empty(&exp->exp_mdt_data.med_open_head));
6677 * discard grants once we're sure no more
6678 * interaction with the client is possible
6680 tgt_grant_discard(exp);
6681 if (exp_connect_flags(exp) & OBD_CONNECT_GRANT)
6682 exp->exp_obd->u.obt.obt_lut->lut_tgd.tgd_tot_granted_clients--;
6684 if (!(exp->exp_flags & OBD_OPT_FORCE))
6685 tgt_grant_sanity_check(exp->exp_obd, __func__);
6690 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
6691 struct linkea_data *ldata)
6695 LASSERT(ldata->ld_buf->lb_buf != NULL);
6697 if (!mdt_object_exists(mdt_obj))
6700 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6701 ldata->ld_buf, XATTR_NAME_LINK);
6702 if (rc == -ERANGE) {
6703 /* Buf was too small, figure out what we need. */
6704 lu_buf_free(ldata->ld_buf);
6705 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6706 ldata->ld_buf, XATTR_NAME_LINK);
6709 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
6710 if (ldata->ld_buf->lb_buf == NULL)
6712 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6713 ldata->ld_buf, XATTR_NAME_LINK);
6718 return linkea_init_with_rec(ldata);
6722 * Given an MDT object, try to look up the full path to the object.
6723 * Part of the MDT layer implementation of lfs fid2path.
6725 * \param[in] info Per-thread common data shared by MDT level handlers.
6726 * \param[in] obj Object to do path lookup of
6727 * \param[in,out] fp User-provided struct to store path information
6728 * \param[in] root_fid Root FID of current path should reach
6730 * \retval 0 Lookup successful, path information stored in fp
6731 * \retval -EAGAIN Lookup failed, usually because object is being moved
6732 * \retval negative errno if there was a problem
6734 static int mdt_path_current(struct mdt_thread_info *info,
6735 struct mdt_object *obj,
6736 struct getinfo_fid2path *fp,
6737 struct lu_fid *root_fid)
6739 struct mdt_device *mdt = info->mti_mdt;
6740 struct lu_name *tmpname = &info->mti_name;
6741 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
6742 struct lu_buf *buf = &info->mti_big_buf;
6743 struct md_attr *ma = &info->mti_attr;
6744 struct linkea_data ldata = { NULL };
6746 struct mdt_object *mdt_obj;
6747 struct link_ea_header *leh;
6748 struct link_ea_entry *lee;
6755 /* temp buffer for path element, the buffer will be finally freed
6756 * in mdt_thread_info_fini */
6757 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
6758 if (buf->lb_buf == NULL)
6762 ptr = fp->gf_u.gf_path + fp->gf_pathlen - 1;
6765 *tmpfid = fp->gf_fid = *mdt_object_fid(obj);
6767 while (!lu_fid_eq(root_fid, &fp->gf_fid)) {
6768 if (!lu_fid_eq(root_fid, &mdt->mdt_md_root_fid) &&
6769 lu_fid_eq(&mdt->mdt_md_root_fid, &fp->gf_fid))
6770 GOTO(out, rc = -ENOENT);
6772 if (lu_fid_eq(mdt_object_fid(obj), tmpfid)) {
6774 mdt_object_get(info->mti_env, mdt_obj);
6776 mdt_obj = mdt_object_find(info->mti_env, mdt, tmpfid);
6777 if (IS_ERR(mdt_obj))
6778 GOTO(out, rc = PTR_ERR(mdt_obj));
6781 if (!mdt_object_exists(mdt_obj)) {
6782 mdt_object_put(info->mti_env, mdt_obj);
6783 GOTO(out, rc = -ENOENT);
6786 if (mdt_object_remote(mdt_obj)) {
6787 mdt_object_put(info->mti_env, mdt_obj);
6788 GOTO(remote_out, rc = -EREMOTE);
6791 rc = mdt_links_read(info, mdt_obj, &ldata);
6793 mdt_object_put(info->mti_env, mdt_obj);
6798 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
6799 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
6800 /* If set, use link #linkno for path lookup, otherwise use
6801 link #0. Only do this for the final path element. */
6802 if (first && fp->gf_linkno < leh->leh_reccount) {
6804 for (count = 0; count < fp->gf_linkno; count++) {
6805 lee = (struct link_ea_entry *)
6806 ((char *)lee + reclen);
6807 linkea_entry_unpack(lee, &reclen, tmpname,
6810 if (fp->gf_linkno < leh->leh_reccount - 1)
6811 /* indicate to user there are more links */
6815 /* Check if it is slave stripes */
6816 rc = mdt_stripe_get(info, mdt_obj, ma, XATTR_NAME_LMV);
6817 mdt_object_put(info->mti_env, mdt_obj);
6821 if (ma->ma_valid & MA_LMV) {
6822 struct lmv_mds_md_v1 *lmv = &ma->ma_lmv->lmv_md_v1;
6824 if (!lmv_is_sane2(lmv))
6825 GOTO(out, rc = -EBADF);
6827 /* For slave stripes, get its master */
6828 if (le32_to_cpu(lmv->lmv_magic) == LMV_MAGIC_STRIPE) {
6829 fp->gf_fid = *tmpfid;
6834 /* Pack the name in the end of the buffer */
6835 ptr -= tmpname->ln_namelen;
6836 if (ptr - 1 <= fp->gf_u.gf_path)
6837 GOTO(out, rc = -EOVERFLOW);
6838 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
6841 /* keep the last resolved fid to the client, so the
6842 * client will build the left path on another MDT for
6844 fp->gf_fid = *tmpfid;
6849 /* non-zero will be treated as an error */
6853 ptr++; /* skip leading / */
6854 memmove(fp->gf_u.gf_path, ptr,
6855 fp->gf_u.gf_path + fp->gf_pathlen - ptr);
6862 * Given an MDT object, use mdt_path_current to get the path.
6863 * Essentially a wrapper to retry mdt_path_current a set number of times
6864 * if -EAGAIN is returned (usually because an object is being moved).
6866 * Part of the MDT layer implementation of lfs fid2path.
6868 * \param[in] info Per-thread common data shared by mdt level handlers.
6869 * \param[in] obj Object to do path lookup of
6870 * \param[in,out] fp User-provided struct for arguments and to store path
6873 * \retval 0 Lookup successful, path information stored in fp
6874 * \retval negative errno if there was a problem
6876 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
6877 struct getinfo_fid2path *fp, struct lu_fid *root_fid)
6879 struct mdt_device *mdt = info->mti_mdt;
6884 if (fp->gf_pathlen < 3)
6887 if (root_fid == NULL)
6888 root_fid = &mdt->mdt_md_root_fid;
6890 if (lu_fid_eq(root_fid, mdt_object_fid(obj))) {
6891 fp->gf_u.gf_path[0] = '\0';
6895 /* Retry multiple times in case file is being moved */
6896 while (tries-- && rc == -EAGAIN)
6897 rc = mdt_path_current(info, obj, fp, root_fid);
6903 * Get the full path of the provided FID, as of changelog record recno.
6905 * This checks sanity and looks up object for user provided FID
6906 * before calling the actual path lookup code.
6908 * Part of the MDT layer implementation of lfs fid2path.
6910 * \param[in] info Per-thread common data shared by mdt level handlers.
6911 * \param[in,out] fp User-provided struct for arguments and to store path
6914 * \retval 0 Lookup successful, path information and recno stored in fp
6915 * \retval -ENOENT, object does not exist
6916 * \retval negative errno if there was a problem
6918 static int mdt_fid2path(struct mdt_thread_info *info,
6919 struct lu_fid *root_fid,
6920 struct getinfo_fid2path *fp)
6922 struct mdt_device *mdt = info->mti_mdt;
6923 struct mdt_object *obj;
6927 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
6928 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
6930 if (!fid_is_sane(&fp->gf_fid))
6933 if (!fid_is_namespace_visible(&fp->gf_fid)) {
6934 CDEBUG(D_INFO, "%s: "DFID" is invalid, f_seq should be >= %#llx"
6935 ", or f_oid != 0, or f_ver == 0\n", mdt_obd_name(mdt),
6936 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
6940 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
6943 CDEBUG(D_IOCTL, "cannot find "DFID": rc = %d\n",
6944 PFID(&fp->gf_fid), rc);
6948 if (mdt_object_remote(obj))
6950 else if (!mdt_object_exists(obj))
6956 mdt_object_put(info->mti_env, obj);
6957 CDEBUG(D_IOCTL, "nonlocal object "DFID": rc = %d\n",
6958 PFID(&fp->gf_fid), rc);
6962 rc = mdt_path(info, obj, fp, root_fid);
6964 CDEBUG(D_INFO, "fid "DFID", path %s recno %#llx linkno %u\n",
6965 PFID(&fp->gf_fid), fp->gf_u.gf_path,
6966 fp->gf_recno, fp->gf_linkno);
6968 mdt_object_put(info->mti_env, obj);
6973 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key, int keylen,
6974 void *val, int vallen)
6976 struct getinfo_fid2path *fpout, *fpin;
6977 struct lu_fid *root_fid = NULL;
6980 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
6983 if (req_capsule_req_need_swab(info->mti_pill))
6984 lustre_swab_fid2path(fpin);
6986 memcpy(fpout, fpin, sizeof(*fpin));
6987 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
6990 if (keylen >= cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*fpin) +
6991 sizeof(struct lu_fid)) {
6992 /* client sent its root FID, which is normally fileset FID */
6993 root_fid = fpin->gf_u.gf_root_fid;
6994 if (req_capsule_req_need_swab(info->mti_pill))
6995 lustre_swab_lu_fid(root_fid);
6997 if (root_fid != NULL && !fid_is_sane(root_fid))
7001 rc = mdt_fid2path(info, root_fid, fpout);
7005 int mdt_get_info(struct tgt_session_info *tsi)
7015 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
7017 CDEBUG(D_IOCTL, "No GETINFO key\n");
7018 RETURN(err_serious(-EFAULT));
7020 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
7023 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
7024 if (vallen == NULL) {
7025 CDEBUG(D_IOCTL, "%s: cannot get RMF_GETINFO_VALLEN buffer\n",
7026 tgt_name(tsi->tsi_tgt));
7027 RETURN(err_serious(-EFAULT));
7030 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
7032 rc = req_capsule_server_pack(tsi->tsi_pill);
7034 RETURN(err_serious(rc));
7036 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
7037 if (valout == NULL) {
7038 CDEBUG(D_IOCTL, "%s: cannot get get-info RPC out buffer\n",
7039 tgt_name(tsi->tsi_tgt));
7040 RETURN(err_serious(-EFAULT));
7043 if (KEY_IS(KEY_FID2PATH)) {
7044 struct mdt_thread_info *info = tsi2mdt_info(tsi);
7046 rc = mdt_rpc_fid2path(info, key, keylen, valout, *vallen);
7047 mdt_thread_info_fini(info);
7054 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
7056 struct obd_ioctl_data *data = karg;
7059 struct mdt_object *obj;
7060 struct mdt_lock_handle *lh;
7064 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
7065 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
7068 fid = (struct lu_fid *)data->ioc_inlbuf1;
7070 if (!fid_is_sane(fid))
7073 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
7075 lh = &mti->mti_lh[MDT_LH_PARENT];
7076 mdt_lock_reg_init(lh, LCK_CR);
7078 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
7080 RETURN(PTR_ERR(obj));
7082 if (mdt_object_remote(obj)) {
7085 * before calling version get the correct MDS should be
7086 * fid, this is error to find remote object here
7088 CERROR("nonlocal object "DFID"\n", PFID(fid));
7089 } else if (!mdt_object_exists(obj)) {
7090 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
7093 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
7094 *(__u64 *)data->ioc_inlbuf2 = version;
7097 mdt_object_unlock_put(mti, obj, lh, 1);
7101 /* ioctls on obd dev */
7102 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
7103 void *karg, void __user *uarg)
7106 struct obd_device *obd = exp->exp_obd;
7107 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
7108 struct dt_device *dt = mdt->mdt_bottom;
7112 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
7113 rc = lu_env_init(&env, LCT_MD_THREAD);
7119 rc = mdt_device_sync(&env, mdt);
7121 case OBD_IOC_SET_READONLY:
7122 rc = dt_sync(&env, dt);
7124 rc = dt_ro(&env, dt);
7126 case OBD_IOC_ABORT_RECOVERY: {
7127 struct obd_ioctl_data *data = karg;
7129 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
7130 if (data->ioc_type & OBD_FLG_ABORT_RECOV_MDT)
7131 obd->obd_abort_recov_mdt = 1;
7132 else /* if (data->ioc_type & OBD_FLG_ABORT_RECOV_OST) */
7133 /* lctl didn't set OBD_FLG_ABORT_RECOV_OST < 2.13.57 */
7134 obd->obd_abort_recovery = 1;
7136 target_stop_recovery_thread(obd);
7140 case OBD_IOC_CHANGELOG_REG:
7141 case OBD_IOC_CHANGELOG_DEREG:
7142 case OBD_IOC_CHANGELOG_CLEAR:
7143 rc = mdt->mdt_child->md_ops->mdo_iocontrol(&env,
7147 case OBD_IOC_START_LFSCK: {
7148 struct md_device *next = mdt->mdt_child;
7149 struct obd_ioctl_data *data = karg;
7150 struct lfsck_start_param lsp;
7152 if (unlikely(data == NULL)) {
7157 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
7158 lsp.lsp_index_valid = 0;
7159 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
7162 case OBD_IOC_STOP_LFSCK: {
7163 struct md_device *next = mdt->mdt_child;
7164 struct obd_ioctl_data *data = karg;
7165 struct lfsck_stop stop;
7167 stop.ls_status = LS_STOPPED;
7168 /* Old lfsck utils may pass NULL @stop. */
7169 if (data->ioc_inlbuf1 == NULL)
7173 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
7175 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
7178 case OBD_IOC_QUERY_LFSCK: {
7179 struct md_device *next = mdt->mdt_child;
7180 struct obd_ioctl_data *data = karg;
7182 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0,
7186 case OBD_IOC_GET_OBJ_VERSION: {
7187 struct mdt_thread_info *mti;
7188 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
7189 memset(mti, 0, sizeof *mti);
7190 mti->mti_env = &env;
7194 rc = mdt_ioc_version_get(mti, karg);
7197 case OBD_IOC_CATLOGLIST: {
7198 struct mdt_thread_info *mti;
7200 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
7201 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
7202 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
7203 &mti->mti_tmp_fid1);
7208 CERROR("%s: Not supported cmd = %d, rc = %d\n",
7209 mdt_obd_name(mdt), cmd, rc);
7216 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
7218 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
7222 if (!mdt->mdt_skip_lfsck && !mdt->mdt_bottom->dd_rdonly) {
7223 struct lfsck_start_param lsp;
7225 lsp.lsp_start = NULL;
7226 lsp.lsp_index_valid = 0;
7227 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
7228 OBD_IOC_START_LFSCK,
7230 if (rc != 0 && rc != -EALREADY)
7231 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
7232 mdt_obd_name(mdt), rc);
7235 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
7239 static int mdt_obd_postrecov(struct obd_device *obd)
7244 rc = lu_env_init(&env, LCT_MD_THREAD);
7247 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
7252 static const struct obd_ops mdt_obd_device_ops = {
7253 .o_owner = THIS_MODULE,
7254 .o_set_info_async = mdt_obd_set_info_async,
7255 .o_connect = mdt_obd_connect,
7256 .o_reconnect = mdt_obd_reconnect,
7257 .o_disconnect = mdt_obd_disconnect,
7258 .o_init_export = mdt_init_export,
7259 .o_destroy_export = mdt_destroy_export,
7260 .o_iocontrol = mdt_iocontrol,
7261 .o_postrecov = mdt_obd_postrecov,
7262 /* Data-on-MDT IO methods */
7263 .o_preprw = mdt_obd_preprw,
7264 .o_commitrw = mdt_obd_commitrw,
7267 static struct lu_device* mdt_device_fini(const struct lu_env *env,
7268 struct lu_device *d)
7270 struct mdt_device *m = mdt_dev(d);
7277 static struct lu_device *mdt_device_free(const struct lu_env *env,
7278 struct lu_device *d)
7280 struct mdt_device *m = mdt_dev(d);
7283 lu_device_fini(&m->mdt_lu_dev);
7289 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
7290 struct lu_device_type *t,
7291 struct lustre_cfg *cfg)
7293 struct lu_device *l;
7294 struct mdt_device *m;
7301 rc = mdt_init0(env, m, t, cfg);
7303 mdt_device_free(env, l);
7308 l = ERR_PTR(-ENOMEM);
7312 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
7313 LU_KEY_INIT(mdt, struct mdt_thread_info);
7315 static void mdt_key_fini(const struct lu_context *ctx,
7316 struct lu_context_key *key, void* data)
7318 struct mdt_thread_info *info = data;
7320 if (info->mti_big_lmm) {
7321 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
7322 info->mti_big_lmm = NULL;
7323 info->mti_big_lmmsize = 0;
7326 if (info->mti_big_acl) {
7327 OBD_FREE_LARGE(info->mti_big_acl, info->mti_big_aclsize);
7328 info->mti_big_acl = NULL;
7329 info->mti_big_aclsize = 0;
7335 /* context key: mdt_thread_key */
7336 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
7338 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
7340 return lu_ucred(info->mti_env);
7343 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
7345 return lu_ucred_check(info->mti_env);
7349 * Enable/disable COS (Commit On Sharing).
7351 * Set/Clear the COS flag in mdt options.
7353 * \param mdt mdt device
7354 * \param val 0 disables COS, other values enable COS
7356 void mdt_enable_cos(struct mdt_device *mdt, bool val)
7361 mdt->mdt_opts.mo_cos = val;
7362 rc = lu_env_init(&env, LCT_LOCAL);
7363 if (unlikely(rc != 0)) {
7364 CWARN("%s: lu_env initialization failed, cannot "
7365 "sync: rc = %d\n", mdt_obd_name(mdt), rc);
7368 mdt_device_sync(&env, mdt);
7373 * Check COS (Commit On Sharing) status.
7375 * Return COS flag status.
7377 * \param mdt mdt device
7379 int mdt_cos_is_enabled(struct mdt_device *mdt)
7381 return mdt->mdt_opts.mo_cos != 0;
7384 static const struct lu_device_type_operations mdt_device_type_ops = {
7385 .ldto_device_alloc = mdt_device_alloc,
7386 .ldto_device_free = mdt_device_free,
7387 .ldto_device_fini = mdt_device_fini
7390 static struct lu_device_type mdt_device_type = {
7391 .ldt_tags = LU_DEVICE_MD,
7392 .ldt_name = LUSTRE_MDT_NAME,
7393 .ldt_ops = &mdt_device_type_ops,
7394 .ldt_ctx_tags = LCT_MD_THREAD
7397 static int __init mdt_init(void)
7401 BUILD_BUG_ON(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") !=
7402 FID_NOBRACE_LEN + 1);
7403 BUILD_BUG_ON(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") !=
7405 rc = lu_kmem_init(mdt_caches);
7409 rc = mds_mod_init();
7413 rc = class_register_type(&mdt_obd_device_ops, NULL, true,
7414 LUSTRE_MDT_NAME, &mdt_device_type);
7419 lu_kmem_fini(mdt_caches);
7426 static void __exit mdt_exit(void)
7428 class_unregister_type(LUSTRE_MDT_NAME);
7430 lu_kmem_fini(mdt_caches);
7433 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
7434 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
7435 MODULE_VERSION(LUSTRE_VERSION_STRING);
7436 MODULE_LICENSE("GPL");
7438 module_init(mdt_init);
7439 module_exit(mdt_exit);