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/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/mdt/mdt_handler.c
34 * Lustre Metadata Target (mdt) request handler
36 * Author: Peter Braam <braam@clusterfs.com>
37 * Author: Andreas Dilger <adilger@clusterfs.com>
38 * Author: Phil Schwan <phil@clusterfs.com>
39 * Author: Mike Shaver <shaver@clusterfs.com>
40 * Author: Nikita Danilov <nikita@clusterfs.com>
41 * Author: Huang Hua <huanghua@clusterfs.com>
42 * Author: Yury Umanets <umka@clusterfs.com>
45 #define DEBUG_SUBSYSTEM S_MDS
47 #include <linux/module.h>
48 #include <linux/pagemap.h>
50 #include <dt_object.h>
51 #include <lustre_acl.h>
52 #include <lustre_export.h>
53 #include <uapi/linux/lustre/lustre_ioctl.h>
54 #include <lustre_lfsck.h>
55 #include <lustre_log.h>
56 #include <lustre_nodemap.h>
57 #include <lustre_mds.h>
58 #include <uapi/linux/lustre/lustre_param.h>
59 #include <lustre_quota.h>
60 #include <lustre_swab.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_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
167 const struct lu_name *lname)
169 lh->mlh_reg_mode = lock_mode;
170 lh->mlh_pdo_mode = LCK_MINMODE;
171 lh->mlh_rreg_mode = lock_mode;
172 lh->mlh_type = MDT_PDO_LOCK;
174 if (lu_name_is_valid(lname)) {
175 lh->mlh_pdo_hash = ll_full_name_hash(NULL, lname->ln_name,
177 /* XXX Workaround for LU-2856
179 * Zero is a valid return value of full_name_hash, but
180 * several users of mlh_pdo_hash assume a non-zero
181 * hash value. We therefore map zero onto an
182 * arbitrary, but consistent value (1) to avoid
183 * problems further down the road. */
184 if (unlikely(lh->mlh_pdo_hash == 0))
185 lh->mlh_pdo_hash = 1;
187 lh->mlh_pdo_hash = 0;
191 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
192 struct mdt_lock_handle *lh)
198 * Any dir access needs couple of locks:
200 * 1) on part of dir we gonna take lookup/modify;
202 * 2) on whole dir to protect it from concurrent splitting and/or to
203 * flush client's cache for readdir().
205 * so, for a given mode and object this routine decides what lock mode
206 * to use for lock #2:
208 * 1) if caller's gonna lookup in dir then we need to protect dir from
209 * being splitted only - LCK_CR
211 * 2) if caller's gonna modify dir then we need to protect dir from
212 * being splitted and to flush cache - LCK_CW
214 * 3) if caller's gonna modify dir and that dir seems ready for
215 * splitting then we need to protect it from any type of access
216 * (lookup/modify/split) - LCK_EX --bzzz
219 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
220 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
223 * Ask underlaying level its opinion about preferable PDO lock mode
224 * having access type passed as regular lock mode:
226 * - MDL_MINMODE means that lower layer does not want to specify lock
229 * - MDL_NL means that no PDO lock should be taken. This is used in some
230 * cases. Say, for non-splittable directories no need to use PDO locks
233 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
234 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
236 if (mode != MDL_MINMODE) {
237 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
240 * Lower layer does not want to specify locking mode. We do it
241 * our selves. No special protection is needed, just flush
242 * client's cache on modification and allow concurrent
245 switch (lh->mlh_reg_mode) {
247 lh->mlh_pdo_mode = LCK_EX;
250 lh->mlh_pdo_mode = LCK_CR;
253 lh->mlh_pdo_mode = LCK_CW;
256 CERROR("Not expected lock type (0x%x)\n",
257 (int)lh->mlh_reg_mode);
262 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
266 static int mdt_lookup_fileset(struct mdt_thread_info *info, const char *fileset,
269 struct mdt_device *mdt = info->mti_mdt;
270 struct lu_name *lname = &info->mti_name;
271 char *filename = info->mti_filename;
272 struct mdt_object *parent;
276 LASSERT(!info->mti_cross_ref);
279 * We may want to allow this to mount a completely separate
280 * fileset from the MDT in the future, but keeping it to
281 * ROOT/ only for now avoid potential security issues.
283 *fid = mdt->mdt_md_root_fid;
285 while (rc == 0 && fileset != NULL && *fileset != '\0') {
286 const char *s1 = fileset;
292 while (*s2 != '/' && *s2 != '\0')
300 lname->ln_namelen = s2 - s1;
301 if (lname->ln_namelen > NAME_MAX) {
306 /* reject .. as a path component */
307 if (lname->ln_namelen == 2 &&
308 strncmp(s1, "..", 2) == 0) {
313 strncpy(filename, s1, lname->ln_namelen);
314 filename[lname->ln_namelen] = '\0';
315 lname->ln_name = filename;
317 parent = mdt_object_find(info->mti_env, mdt, fid);
318 if (IS_ERR(parent)) {
319 rc = PTR_ERR(parent);
322 /* Only got the fid of this obj by name */
324 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
325 fid, &info->mti_spec);
326 mdt_object_put(info->mti_env, parent);
329 parent = mdt_object_find(info->mti_env, mdt, fid);
331 rc = PTR_ERR(parent);
333 mode = lu_object_attr(&parent->mot_obj);
334 mdt_object_put(info->mti_env, parent);
343 static int mdt_get_root(struct tgt_session_info *tsi)
345 struct mdt_thread_info *info = tsi2mdt_info(tsi);
346 struct mdt_device *mdt = info->mti_mdt;
347 struct mdt_body *repbody;
348 char *fileset = NULL, *buffer = NULL;
350 struct obd_export *exp = info->mti_exp;
351 char *nodemap_fileset;
355 rc = mdt_check_ucred(info);
357 GOTO(out, rc = err_serious(rc));
359 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GET_ROOT_PACK))
360 GOTO(out, rc = err_serious(-ENOMEM));
362 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
363 if (req_capsule_get_size(info->mti_pill, &RMF_NAME, RCL_CLIENT) > 0) {
364 fileset = req_capsule_client_get(info->mti_pill, &RMF_NAME);
366 GOTO(out, rc = err_serious(-EFAULT));
369 nodemap_fileset = nodemap_get_fileset(exp->exp_target_data.ted_nodemap);
370 if (nodemap_fileset && nodemap_fileset[0]) {
371 CDEBUG(D_INFO, "nodemap fileset is %s\n", nodemap_fileset);
373 /* consider fileset from client as a sub-fileset
374 * of the nodemap one */
375 OBD_ALLOC(buffer, PATH_MAX + 1);
377 GOTO(out, rc = err_serious(-ENOMEM));
378 if (snprintf(buffer, PATH_MAX + 1, "%s/%s",
379 nodemap_fileset, fileset) >= PATH_MAX + 1)
380 GOTO(out, rc = err_serious(-EINVAL));
383 /* enforce fileset as specified in the nodemap */
384 fileset = nodemap_fileset;
389 CDEBUG(D_INFO, "Getting fileset %s\n", fileset);
390 rc = mdt_lookup_fileset(info, fileset, &repbody->mbo_fid1);
392 GOTO(out, rc = err_serious(rc));
394 repbody->mbo_fid1 = mdt->mdt_md_root_fid;
396 repbody->mbo_valid |= OBD_MD_FLID;
400 mdt_thread_info_fini(info);
402 OBD_FREE(buffer, PATH_MAX+1);
406 static int mdt_statfs(struct tgt_session_info *tsi)
408 struct ptlrpc_request *req = tgt_ses_req(tsi);
409 struct mdt_thread_info *info = tsi2mdt_info(tsi);
410 struct mdt_device *mdt = info->mti_mdt;
411 struct tg_grants_data *tgd = &mdt->mdt_lut.lut_tgd;
412 struct md_device *next = mdt->mdt_child;
413 struct ptlrpc_service_part *svcpt;
414 struct obd_statfs *osfs;
415 struct mdt_body *reqbody = NULL;
416 struct mdt_statfs_cache *msf;
421 svcpt = req->rq_rqbd->rqbd_svcpt;
423 /* This will trigger a watchdog timeout */
424 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
425 (MDT_SERVICE_WATCHDOG_FACTOR *
426 at_get(&svcpt->scp_at_estimate)) + 1);
428 rc = mdt_check_ucred(info);
430 GOTO(out, rc = err_serious(rc));
432 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
433 GOTO(out, rc = err_serious(-ENOMEM));
435 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
437 GOTO(out, rc = -EPROTO);
439 if (mdt_is_sum_statfs_client(req->rq_export) &&
440 lustre_packed_msg_size(req->rq_reqmsg) ==
441 req_capsule_fmt_size(req->rq_reqmsg->lm_magic,
442 &RQF_MDS_STATFS_NEW, RCL_CLIENT)) {
443 req_capsule_extend(info->mti_pill, &RQF_MDS_STATFS_NEW);
444 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
447 if (reqbody && reqbody->mbo_valid & OBD_MD_FLAGSTATFS)
448 msf = &mdt->mdt_sum_osfs;
450 msf = &mdt->mdt_osfs;
452 if (msf->msf_age + OBD_STATFS_CACHE_SECONDS <= ktime_get_seconds()) {
453 /** statfs data is too old, get up-to-date one */
454 if (reqbody && reqbody->mbo_valid & OBD_MD_FLAGSTATFS)
455 rc = next->md_ops->mdo_statfs(info->mti_env,
458 rc = dt_statfs(info->mti_env, mdt->mdt_bottom,
462 spin_lock(&mdt->mdt_lock);
463 msf->msf_osfs = *osfs;
464 msf->msf_age = ktime_get_seconds();
465 spin_unlock(&mdt->mdt_lock);
467 /** use cached statfs data */
468 spin_lock(&mdt->mdt_lock);
469 *osfs = msf->msf_osfs;
470 spin_unlock(&mdt->mdt_lock);
473 /* at least try to account for cached pages. its still racy and
474 * might be under-reporting if clients haven't announced their
475 * caches with brw recently */
476 CDEBUG(D_SUPER | D_CACHE, "blocks cached %llu granted %llu"
477 " pending %llu free %llu avail %llu\n",
478 tgd->tgd_tot_dirty, tgd->tgd_tot_granted,
479 tgd->tgd_tot_pending,
480 osfs->os_bfree << tgd->tgd_blockbits,
481 osfs->os_bavail << tgd->tgd_blockbits);
483 osfs->os_bavail -= min_t(u64, osfs->os_bavail,
484 ((tgd->tgd_tot_dirty + tgd->tgd_tot_pending +
485 osfs->os_bsize - 1) >> tgd->tgd_blockbits));
487 tgt_grant_sanity_check(mdt->mdt_lu_dev.ld_obd, __func__);
488 CDEBUG(D_CACHE, "%llu blocks: %llu free, %llu avail; "
489 "%llu objects: %llu free; state %x\n",
490 osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
491 osfs->os_files, osfs->os_ffree, osfs->os_state);
493 if (!exp_grant_param_supp(tsi->tsi_exp) &&
494 tgd->tgd_blockbits > COMPAT_BSIZE_SHIFT) {
495 /* clients which don't support OBD_CONNECT_GRANT_PARAM
496 * should not see a block size > page size, otherwise
497 * cl_lost_grant goes mad. Therefore, we emulate a 4KB (=2^12)
498 * block size which is the biggest block size known to work
499 * with all client's page size. */
500 osfs->os_blocks <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
501 osfs->os_bfree <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
502 osfs->os_bavail <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
503 osfs->os_bsize = 1 << COMPAT_BSIZE_SHIFT;
506 mdt_counter_incr(req, LPROC_MDT_STATFS);
508 mdt_thread_info_fini(info);
513 * Pack size attributes into the reply.
515 int mdt_pack_size2body(struct mdt_thread_info *info,
516 const struct lu_fid *fid, struct lustre_handle *lh)
519 struct md_attr *ma = &info->mti_attr;
521 bool dom_lock = false;
525 LASSERT(ma->ma_attr.la_valid & LA_MODE);
527 if (!S_ISREG(ma->ma_attr.la_mode) ||
528 !(ma->ma_valid & MA_LOV && ma->ma_lmm != NULL))
531 dom_stripe = mdt_lmm_dom_entry(ma->ma_lmm);
532 /* no DoM stripe, no size in reply */
533 if (dom_stripe == LMM_NO_DOM)
536 if (lustre_handle_is_used(lh)) {
537 struct ldlm_lock *lock;
539 lock = ldlm_handle2lock(lh);
541 dom_lock = ldlm_has_dom(lock);
546 /* no DoM lock, no size in reply */
550 /* Either DoM lock exists or LMM has only DoM stripe then
551 * return size on body. */
552 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
554 mdt_dom_object_size(info->mti_env, info->mti_mdt, fid, b, dom_lock);
558 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
560 * Pack ACL data into the reply. UIDs/GIDs are mapped and filtered by nodemap.
562 * \param info thread info object
563 * \param repbody reply to pack ACLs into
564 * \param o mdt object of file to examine
565 * \param nodemap nodemap of client to reply to
567 * \retval -errno error getting or parsing ACL from disk
569 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
570 struct mdt_object *o, struct lu_nodemap *nodemap)
572 const struct lu_env *env = info->mti_env;
573 struct md_object *next = mdt_object_child(o);
574 struct lu_buf *buf = &info->mti_buf;
575 struct mdt_device *mdt = info->mti_mdt;
576 struct req_capsule *pill = info->mti_pill;
581 buf->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
582 buf->lb_len = req_capsule_get_size(pill, &RMF_ACL, RCL_SERVER);
583 if (buf->lb_len == 0)
587 rc = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_ACCESS);
589 if (rc == -ENODATA) {
590 repbody->mbo_aclsize = 0;
591 repbody->mbo_valid |= OBD_MD_FLACL;
593 } else if (rc == -EOPNOTSUPP) {
597 exp_connect_large_acl(info->mti_exp) &&
598 buf->lb_buf != info->mti_big_acl) {
599 if (info->mti_big_acl == NULL) {
600 info->mti_big_aclsize =
601 MIN(mdt->mdt_max_ea_size,
603 OBD_ALLOC_LARGE(info->mti_big_acl,
604 info->mti_big_aclsize);
605 if (info->mti_big_acl == NULL) {
606 info->mti_big_aclsize = 0;
607 CERROR("%s: unable to grow "
610 PFID(mdt_object_fid(o)));
615 CDEBUG(D_INODE, "%s: grow the "DFID
616 " ACL buffer to size %d\n",
618 PFID(mdt_object_fid(o)),
619 info->mti_big_aclsize);
621 buf->lb_buf = info->mti_big_acl;
622 buf->lb_len = info->mti_big_aclsize;
627 CERROR("%s: unable to read "DFID" ACL: rc = %d\n",
628 mdt_obd_name(mdt), PFID(mdt_object_fid(o)), rc);
637 acl_buflen = req_capsule_get_size(pill, &RMF_ACL, RCL_SERVER);
638 if (acl_buflen >= rc)
641 /* If LOV/LMA EA is small, we can reuse part of their buffer */
642 client = ptlrpc_req_get_repsize(pill->rc_req);
643 server = lustre_packed_msg_size(pill->rc_req->rq_repmsg);
644 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER)) {
645 lmm_buflen = req_capsule_get_size(pill, &RMF_MDT_MD,
647 lmmsize = repbody->mbo_eadatasize;
650 if (client < server - acl_buflen - lmm_buflen + rc + lmmsize) {
651 CDEBUG(D_INODE, "%s: client prepared buffer size %d "
652 "is not big enough with the ACL size %d (%d)\n",
653 mdt_obd_name(mdt), client, rc,
654 server - acl_buflen - lmm_buflen + rc + lmmsize);
655 repbody->mbo_aclsize = 0;
656 repbody->mbo_valid &= ~OBD_MD_FLACL;
661 if (buf->lb_buf == info->mti_big_acl)
662 info->mti_big_acl_used = 1;
664 rc = nodemap_map_acl(nodemap, buf->lb_buf,
665 rc, NODEMAP_FS_TO_CLIENT);
666 /* if all ACLs mapped out, rc is still >= 0 */
668 CERROR("%s: nodemap_map_acl unable to parse "DFID
669 " ACL: rc = %d\n", mdt_obd_name(mdt),
670 PFID(mdt_object_fid(o)), rc);
671 repbody->mbo_aclsize = 0;
672 repbody->mbo_valid &= ~OBD_MD_FLACL;
674 repbody->mbo_aclsize = rc;
675 repbody->mbo_valid |= OBD_MD_FLACL;
684 /* XXX Look into layout in MDT layer. */
685 static inline bool mdt_hsm_is_released(struct lov_mds_md *lmm)
687 struct lov_comp_md_v1 *comp_v1;
688 struct lov_mds_md *v1;
691 if (lmm->lmm_magic == LOV_MAGIC_COMP_V1) {
692 comp_v1 = (struct lov_comp_md_v1 *)lmm;
694 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
695 v1 = (struct lov_mds_md *)((char *)comp_v1 +
696 comp_v1->lcm_entries[i].lcme_offset);
697 /* We don't support partial release for now */
698 if (!(v1->lmm_pattern & LOV_PATTERN_F_RELEASED))
703 return (lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) ?
708 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
709 const struct lu_attr *attr, const struct lu_fid *fid)
711 struct md_attr *ma = &info->mti_attr;
712 struct obd_export *exp = info->mti_exp;
713 struct lu_nodemap *nodemap = NULL;
715 LASSERT(ma->ma_valid & MA_INODE);
717 if (attr->la_valid & LA_ATIME) {
718 b->mbo_atime = attr->la_atime;
719 b->mbo_valid |= OBD_MD_FLATIME;
721 if (attr->la_valid & LA_MTIME) {
722 b->mbo_mtime = attr->la_mtime;
723 b->mbo_valid |= OBD_MD_FLMTIME;
725 if (attr->la_valid & LA_CTIME) {
726 b->mbo_ctime = attr->la_ctime;
727 b->mbo_valid |= OBD_MD_FLCTIME;
729 if (attr->la_valid & LA_FLAGS) {
730 b->mbo_flags = attr->la_flags;
731 b->mbo_valid |= OBD_MD_FLFLAGS;
733 if (attr->la_valid & LA_NLINK) {
734 b->mbo_nlink = attr->la_nlink;
735 b->mbo_valid |= OBD_MD_FLNLINK;
737 if (attr->la_valid & (LA_UID|LA_GID)) {
738 nodemap = nodemap_get_from_exp(exp);
742 if (attr->la_valid & LA_UID) {
743 b->mbo_uid = nodemap_map_id(nodemap, NODEMAP_UID,
744 NODEMAP_FS_TO_CLIENT,
746 b->mbo_valid |= OBD_MD_FLUID;
748 if (attr->la_valid & LA_GID) {
749 b->mbo_gid = nodemap_map_id(nodemap, NODEMAP_GID,
750 NODEMAP_FS_TO_CLIENT,
752 b->mbo_valid |= OBD_MD_FLGID;
755 if (attr->la_valid & LA_PROJID) {
756 /* TODO, nodemap for project id */
757 b->mbo_projid = attr->la_projid;
758 b->mbo_valid |= OBD_MD_FLPROJID;
761 b->mbo_mode = attr->la_mode;
762 if (attr->la_valid & LA_MODE)
763 b->mbo_valid |= OBD_MD_FLMODE;
764 if (attr->la_valid & LA_TYPE)
765 b->mbo_valid |= OBD_MD_FLTYPE;
769 b->mbo_valid |= OBD_MD_FLID;
770 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, valid=%#llx\n",
771 PFID(fid), b->mbo_nlink, b->mbo_mode, b->mbo_valid);
774 if (!(attr->la_valid & LA_TYPE))
777 b->mbo_rdev = attr->la_rdev;
778 b->mbo_size = attr->la_size;
779 b->mbo_blocks = attr->la_blocks;
781 if (!S_ISREG(attr->la_mode)) {
782 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
783 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
784 /* means no objects are allocated on osts. */
785 LASSERT(!(ma->ma_valid & MA_LOV));
786 /* just ignore blocks occupied by extend attributes on MDS */
788 /* if no object is allocated on osts, the size on mds is valid.
790 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
791 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL) {
792 if (mdt_hsm_is_released(ma->ma_lmm)) {
793 /* A released file stores its size on MDS. */
794 /* But return 1 block for released file, unless tools
795 * like tar will consider it fully sparse. (LU-3864)
797 if (unlikely(b->mbo_size == 0))
801 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
802 } else if (info->mti_som_valid) { /* som is valid */
803 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
804 } else if (ma->ma_valid & MA_SOM) { /* lsom is valid */
805 b->mbo_valid |= OBD_MD_FLLAZYSIZE | OBD_MD_FLLAZYBLOCKS;
806 b->mbo_size = ma->ma_som.ms_size;
807 b->mbo_blocks = ma->ma_som.ms_blocks;
811 if (fid != NULL && (b->mbo_valid & OBD_MD_FLSIZE ||
812 b->mbo_valid & OBD_MD_FLLAZYSIZE))
813 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
814 PFID(fid), (unsigned long long)b->mbo_size);
817 if (!IS_ERR_OR_NULL(nodemap))
818 nodemap_putref(nodemap);
821 static inline int mdt_body_has_lov(const struct lu_attr *la,
822 const struct mdt_body *body)
824 return (S_ISREG(la->la_mode) && (body->mbo_valid & OBD_MD_FLEASIZE)) ||
825 (S_ISDIR(la->la_mode) && (body->mbo_valid & OBD_MD_FLDIREA));
828 void mdt_client_compatibility(struct mdt_thread_info *info)
830 struct mdt_body *body;
831 struct ptlrpc_request *req = mdt_info_req(info);
832 struct obd_export *exp = req->rq_export;
833 struct md_attr *ma = &info->mti_attr;
834 struct lu_attr *la = &ma->ma_attr;
837 if (exp_connect_layout(exp))
838 /* the client can deal with 16-bit lmm_stripe_count */
841 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
843 if (!mdt_body_has_lov(la, body))
846 /* now we have a reply with a lov for a client not compatible with the
847 * layout lock so we have to clean the layout generation number */
848 if (S_ISREG(la->la_mode))
849 ma->ma_lmm->lmm_layout_gen = 0;
853 static int mdt_attr_get_eabuf_size(struct mdt_thread_info *info,
854 struct mdt_object *o)
856 const struct lu_env *env = info->mti_env;
859 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
868 /* Is it a directory? Let's check for the LMV as well */
869 if (S_ISDIR(lu_object_attr(&mdt_object_child(o)->mo_lu))) {
870 rc2 = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
874 rc2 = mo_xattr_get(env, mdt_object_child(o),
876 XATTR_NAME_DEFAULT_LMV);
878 if ((rc2 < 0 && rc2 != -ENODATA) || (rc2 > rc))
886 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
889 const struct lu_env *env = info->mti_env;
893 LASSERT(info->mti_big_lmm_used == 0);
894 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
898 /* big_lmm may need to be grown */
899 if (info->mti_big_lmmsize < rc) {
900 int size = size_roundup_power2(rc);
902 if (info->mti_big_lmmsize > 0) {
903 /* free old buffer */
904 LASSERT(info->mti_big_lmm);
905 OBD_FREE_LARGE(info->mti_big_lmm,
906 info->mti_big_lmmsize);
907 info->mti_big_lmm = NULL;
908 info->mti_big_lmmsize = 0;
911 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
912 if (info->mti_big_lmm == NULL)
914 info->mti_big_lmmsize = size;
916 LASSERT(info->mti_big_lmmsize >= rc);
918 info->mti_buf.lb_buf = info->mti_big_lmm;
919 info->mti_buf.lb_len = info->mti_big_lmmsize;
920 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
925 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
926 struct md_attr *ma, const char *name)
928 struct md_object *next = mdt_object_child(o);
929 struct lu_buf *buf = &info->mti_buf;
932 if (strcmp(name, XATTR_NAME_LOV) == 0) {
933 buf->lb_buf = ma->ma_lmm;
934 buf->lb_len = ma->ma_lmm_size;
935 LASSERT(!(ma->ma_valid & MA_LOV));
936 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
937 buf->lb_buf = ma->ma_lmv;
938 buf->lb_len = ma->ma_lmv_size;
939 LASSERT(!(ma->ma_valid & MA_LMV));
940 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
941 buf->lb_buf = ma->ma_default_lmv;
942 buf->lb_len = ma->ma_default_lmv_size;
943 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
948 LASSERT(buf->lb_buf);
950 rc = mo_xattr_get(info->mti_env, next, buf, name);
954 if (strcmp(name, XATTR_NAME_LOV) == 0) {
955 if (info->mti_big_lmm_used)
956 ma->ma_lmm = info->mti_big_lmm;
958 /* NOT return LOV EA with hole to old client. */
959 if (unlikely(le32_to_cpu(ma->ma_lmm->lmm_pattern) &
960 LOV_PATTERN_F_HOLE) &&
961 !(exp_connect_flags(info->mti_exp) &
962 OBD_CONNECT_LFSCK)) {
965 ma->ma_lmm_size = rc;
966 ma->ma_valid |= MA_LOV;
968 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
969 if (info->mti_big_lmm_used)
970 ma->ma_lmv = info->mti_big_lmm;
972 ma->ma_lmv_size = rc;
973 ma->ma_valid |= MA_LMV;
974 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
975 ma->ma_default_lmv_size = rc;
976 ma->ma_valid |= MA_LMV_DEF;
979 /* Update mdt_max_mdsize so all clients will be aware that */
980 if (info->mti_mdt->mdt_max_mdsize < rc)
981 info->mti_mdt->mdt_max_mdsize = rc;
984 } else if (rc == -ENODATA) {
987 } else if (rc == -ERANGE) {
988 /* Default LMV has fixed size, so it must be able to fit
989 * in the original buffer */
990 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
992 rc = mdt_big_xattr_get(info, o, name);
994 info->mti_big_lmm_used = 1;
1002 int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
1003 struct lu_fid *pfid)
1005 struct lu_buf *buf = &info->mti_buf;
1006 struct link_ea_header *leh;
1007 struct link_ea_entry *lee;
1011 buf->lb_buf = info->mti_big_lmm;
1012 buf->lb_len = info->mti_big_lmmsize;
1013 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
1014 buf, XATTR_NAME_LINK);
1015 /* ignore errors, MA_PFID won't be set and it is
1016 * up to the caller to treat this as an error */
1017 if (rc == -ERANGE || buf->lb_len == 0) {
1018 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
1019 buf->lb_buf = info->mti_big_lmm;
1020 buf->lb_len = info->mti_big_lmmsize;
1025 if (rc < sizeof(*leh)) {
1026 CERROR("short LinkEA on "DFID": rc = %d\n",
1027 PFID(mdt_object_fid(o)), rc);
1031 leh = (struct link_ea_header *) buf->lb_buf;
1032 lee = (struct link_ea_entry *)(leh + 1);
1033 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
1034 leh->leh_magic = LINK_EA_MAGIC;
1035 leh->leh_reccount = __swab32(leh->leh_reccount);
1036 leh->leh_len = __swab64(leh->leh_len);
1038 if (leh->leh_magic != LINK_EA_MAGIC)
1040 if (leh->leh_reccount == 0)
1043 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
1044 fid_be_to_cpu(pfid, pfid);
1049 int mdt_attr_get_complex(struct mdt_thread_info *info,
1050 struct mdt_object *o, struct md_attr *ma)
1052 const struct lu_env *env = info->mti_env;
1053 struct md_object *next = mdt_object_child(o);
1054 struct lu_buf *buf = &info->mti_buf;
1055 int need = ma->ma_need;
1062 if (mdt_object_exists(o) == 0)
1063 GOTO(out, rc = -ENOENT);
1064 mode = lu_object_attr(&next->mo_lu);
1066 if (need & MA_INODE) {
1067 ma->ma_need = MA_INODE;
1068 rc = mo_attr_get(env, next, ma);
1073 (void) mdt_get_som(info, o, ma);
1074 ma->ma_valid |= MA_INODE;
1077 if (need & MA_PFID) {
1078 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
1080 ma->ma_valid |= MA_PFID;
1081 /* ignore this error, parent fid is not mandatory */
1085 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
1086 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
1091 if (need & MA_LMV && S_ISDIR(mode)) {
1092 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
1097 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
1098 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
1104 * In the handle of MA_INODE, we may already get the SOM attr.
1106 if (need & MA_SOM && S_ISREG(mode) && !(ma->ma_valid & MA_SOM)) {
1107 rc = mdt_get_som(info, o, ma);
1112 if (need & MA_HSM && S_ISREG(mode)) {
1113 buf->lb_buf = info->mti_xattr_buf;
1114 buf->lb_len = sizeof(info->mti_xattr_buf);
1115 BUILD_BUG_ON(sizeof(struct hsm_attrs) >
1116 sizeof(info->mti_xattr_buf));
1117 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
1118 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
1120 ma->ma_valid |= MA_HSM;
1121 else if (rc2 < 0 && rc2 != -ENODATA)
1122 GOTO(out, rc = rc2);
1125 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
1126 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
1127 buf->lb_buf = ma->ma_acl;
1128 buf->lb_len = ma->ma_acl_size;
1129 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
1131 ma->ma_acl_size = rc2;
1132 ma->ma_valid |= MA_ACL_DEF;
1133 } else if (rc2 == -ENODATA) {
1135 ma->ma_acl_size = 0;
1137 GOTO(out, rc = rc2);
1142 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = %#llx ma_lmm=%p\n",
1143 rc, ma->ma_valid, ma->ma_lmm);
1147 static int mdt_getattr_internal(struct mdt_thread_info *info,
1148 struct mdt_object *o, int ma_need)
1150 struct md_object *next = mdt_object_child(o);
1151 const struct mdt_body *reqbody = info->mti_body;
1152 struct ptlrpc_request *req = mdt_info_req(info);
1153 struct md_attr *ma = &info->mti_attr;
1154 struct lu_attr *la = &ma->ma_attr;
1155 struct req_capsule *pill = info->mti_pill;
1156 const struct lu_env *env = info->mti_env;
1157 struct mdt_body *repbody;
1158 struct lu_buf *buffer = &info->mti_buf;
1159 struct obd_export *exp = info->mti_exp;
1163 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
1164 RETURN(err_serious(-ENOMEM));
1166 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1170 if (mdt_object_remote(o)) {
1171 /* This object is located on remote node.*/
1172 /* Return -ENOTSUPP for old client */
1173 if (!mdt_is_dne_client(req->rq_export))
1174 GOTO(out, rc = -ENOTSUPP);
1176 repbody->mbo_fid1 = *mdt_object_fid(o);
1177 repbody->mbo_valid = OBD_MD_FLID | OBD_MD_MDS;
1181 if (reqbody->mbo_eadatasize > 0) {
1182 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
1183 if (buffer->lb_buf == NULL)
1184 GOTO(out, rc = -EPROTO);
1185 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD,
1188 buffer->lb_buf = NULL;
1190 ma_need &= ~(MA_LOV | MA_LMV);
1191 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
1192 mdt_obd_name(info->mti_mdt),
1193 req->rq_export->exp_client_uuid.uuid);
1196 /* from 2.12.58 intent_getattr pack default LMV in reply */
1197 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1198 ((reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA)) ==
1199 (OBD_MD_MEA | OBD_MD_DEFAULT_MEA)) &&
1200 req_capsule_has_field(&req->rq_pill, &RMF_DEFAULT_MDT_MD,
1202 ma->ma_lmv = buffer->lb_buf;
1203 ma->ma_lmv_size = buffer->lb_len;
1204 ma->ma_default_lmv = req_capsule_server_get(pill,
1205 &RMF_DEFAULT_MDT_MD);
1206 ma->ma_default_lmv_size = req_capsule_get_size(pill,
1207 &RMF_DEFAULT_MDT_MD,
1209 ma->ma_need = MA_INODE;
1210 if (ma->ma_lmv_size > 0)
1211 ma->ma_need |= MA_LMV;
1212 if (ma->ma_default_lmv_size > 0)
1213 ma->ma_need |= MA_LMV_DEF;
1214 } else if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1215 (reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
1216 /* If it is dir and client require MEA, then we got MEA */
1217 /* Assumption: MDT_MD size is enough for lmv size. */
1218 ma->ma_lmv = buffer->lb_buf;
1219 ma->ma_lmv_size = buffer->lb_len;
1220 ma->ma_need = MA_INODE;
1221 if (ma->ma_lmv_size > 0) {
1222 if (reqbody->mbo_valid & OBD_MD_MEA) {
1223 ma->ma_need |= MA_LMV;
1224 } else if (reqbody->mbo_valid & OBD_MD_DEFAULT_MEA) {
1225 ma->ma_need |= MA_LMV_DEF;
1226 ma->ma_default_lmv = buffer->lb_buf;
1228 ma->ma_default_lmv_size = buffer->lb_len;
1229 ma->ma_lmv_size = 0;
1233 ma->ma_lmm = buffer->lb_buf;
1234 ma->ma_lmm_size = buffer->lb_len;
1235 ma->ma_need = MA_INODE | MA_HSM;
1236 if (ma->ma_lmm_size > 0) {
1237 ma->ma_need |= MA_LOV;
1238 /* Older clients may crash if they getattr overstriped
1241 if (!exp_connect_overstriping(exp) &&
1242 mdt_lmm_is_overstriping(ma->ma_lmm))
1243 RETURN(-EOPNOTSUPP);
1247 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1248 reqbody->mbo_valid & OBD_MD_FLDIREA &&
1249 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
1250 /* get default stripe info for this dir. */
1251 ma->ma_need |= MA_LOV_DEF;
1253 ma->ma_need |= ma_need;
1255 rc = mdt_attr_get_complex(info, o, ma);
1257 CDEBUG(rc == -ENOENT ? D_OTHER : D_ERROR,
1258 "%s: getattr error for "DFID": rc = %d\n",
1259 mdt_obd_name(info->mti_mdt),
1260 PFID(mdt_object_fid(o)), rc);
1264 /* if file is released, check if a restore is running */
1265 if (ma->ma_valid & MA_HSM) {
1266 repbody->mbo_valid |= OBD_MD_TSTATE;
1267 if ((ma->ma_hsm.mh_flags & HS_RELEASED) &&
1268 mdt_hsm_restore_is_running(info, mdt_object_fid(o)))
1269 repbody->mbo_t_state = MS_RESTORE;
1272 if (likely(ma->ma_valid & MA_INODE))
1273 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
1277 if (mdt_body_has_lov(la, reqbody)) {
1278 if (ma->ma_valid & MA_LOV) {
1279 LASSERT(ma->ma_lmm_size);
1280 repbody->mbo_eadatasize = ma->ma_lmm_size;
1281 if (S_ISDIR(la->la_mode))
1282 repbody->mbo_valid |= OBD_MD_FLDIREA;
1284 repbody->mbo_valid |= OBD_MD_FLEASIZE;
1285 mdt_dump_lmm(D_INFO, ma->ma_lmm, repbody->mbo_valid);
1287 if (ma->ma_valid & MA_LMV) {
1288 /* Return -ENOTSUPP for old client */
1289 if (!mdt_is_striped_client(req->rq_export))
1292 LASSERT(S_ISDIR(la->la_mode));
1293 mdt_dump_lmv(D_INFO, ma->ma_lmv);
1294 repbody->mbo_eadatasize = ma->ma_lmv_size;
1295 repbody->mbo_valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
1297 if (ma->ma_valid & MA_LMV_DEF) {
1298 /* Return -ENOTSUPP for old client */
1299 if (!mdt_is_striped_client(req->rq_export))
1301 LASSERT(S_ISDIR(la->la_mode));
1303 * when ll_dir_getstripe() gets default LMV, it
1304 * checks mbo_eadatasize.
1306 if (!(ma->ma_valid & MA_LMV))
1307 repbody->mbo_eadatasize =
1308 ma->ma_default_lmv_size;
1309 repbody->mbo_valid |= (OBD_MD_FLDIREA |
1310 OBD_MD_DEFAULT_MEA);
1312 } else if (S_ISLNK(la->la_mode) &&
1313 reqbody->mbo_valid & OBD_MD_LINKNAME) {
1314 buffer->lb_buf = ma->ma_lmm;
1315 /* eadatasize from client includes NULL-terminator, so
1316 * there is no need to read it */
1317 buffer->lb_len = reqbody->mbo_eadatasize - 1;
1318 rc = mo_readlink(env, next, buffer);
1319 if (unlikely(rc <= 0)) {
1320 CERROR("%s: readlink failed for "DFID": rc = %d\n",
1321 mdt_obd_name(info->mti_mdt),
1322 PFID(mdt_object_fid(o)), rc);
1325 int print_limit = min_t(int, PAGE_SIZE - 128, rc);
1327 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
1329 repbody->mbo_valid |= OBD_MD_LINKNAME;
1330 /* we need to report back size with NULL-terminator
1331 * because client expects that */
1332 repbody->mbo_eadatasize = rc + 1;
1333 if (repbody->mbo_eadatasize != reqbody->mbo_eadatasize)
1334 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
1335 "on "DFID ", expected %d\n",
1336 mdt_obd_name(info->mti_mdt),
1337 rc, PFID(mdt_object_fid(o)),
1338 reqbody->mbo_eadatasize - 1);
1339 /* NULL terminate */
1340 ((char *)ma->ma_lmm)[rc] = 0;
1342 /* If the total CDEBUG() size is larger than a page, it
1343 * will print a warning to the console, avoid this by
1344 * printing just the last part of the symlink. */
1345 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
1346 print_limit < rc ? "..." : "", print_limit,
1347 (char *)ma->ma_lmm + rc - print_limit, rc);
1352 if (reqbody->mbo_valid & OBD_MD_FLMODEASIZE) {
1353 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
1354 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
1355 CDEBUG(D_INODE, "changing the max MD size to %u\n",
1356 repbody->mbo_max_mdsize);
1359 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
1360 if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
1361 (reqbody->mbo_valid & OBD_MD_FLACL)) {
1362 struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
1363 if (IS_ERR(nodemap))
1364 RETURN(PTR_ERR(nodemap));
1366 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
1367 nodemap_putref(nodemap);
1373 mdt_counter_incr(req, LPROC_MDT_GETATTR);
1378 static int mdt_getattr(struct tgt_session_info *tsi)
1380 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1381 struct mdt_object *obj = info->mti_object;
1382 struct req_capsule *pill = info->mti_pill;
1383 struct mdt_body *reqbody;
1384 struct mdt_body *repbody;
1388 if (unlikely(info->mti_object == NULL))
1391 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1393 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1395 /* Special case for Data-on-MDT files to get data version */
1396 if (unlikely(reqbody->mbo_valid & OBD_MD_FLDATAVERSION)) {
1397 rc = mdt_data_version_get(tsi);
1401 /* Unlike intent case where we need to pre-fill out buffers early on
1402 * in intent policy for ldlm reasons, here we can have a much better
1403 * guess at EA size by just reading it from disk.
1404 * Exceptions are readdir and (missing) directory striping */
1406 if (reqbody->mbo_valid & OBD_MD_LINKNAME) {
1407 /* No easy way to know how long is the symlink, but it cannot
1408 * be more than PATH_MAX, so we allocate +1 */
1410 /* A special case for fs ROOT: getattr there might fetch
1411 * default EA for entire fs, not just for this dir!
1413 } else if (lu_fid_eq(mdt_object_fid(obj),
1414 &info->mti_mdt->mdt_md_root_fid) &&
1415 (reqbody->mbo_valid & OBD_MD_FLDIREA) &&
1416 (lustre_msg_get_opc(mdt_info_req(info)->rq_reqmsg) ==
1418 /* Should the default strping be bigger, mdt_fix_reply
1419 * will reallocate */
1420 rc = DEF_REP_MD_SIZE;
1422 /* Read the actual EA size from disk */
1423 rc = mdt_attr_get_eabuf_size(info, obj);
1427 GOTO(out, rc = err_serious(rc));
1429 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, rc);
1431 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
1432 * by default. If the target object has more ACL entries, then
1433 * enlarge the buffer when necessary. */
1434 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
1435 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
1437 rc = req_capsule_server_pack(pill);
1438 if (unlikely(rc != 0))
1439 GOTO(out, rc = err_serious(rc));
1441 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1442 LASSERT(repbody != NULL);
1443 repbody->mbo_eadatasize = 0;
1444 repbody->mbo_aclsize = 0;
1446 rc = mdt_check_ucred(info);
1448 GOTO(out_shrink, rc);
1450 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1452 rc = mdt_getattr_internal(info, obj, 0);
1455 mdt_client_compatibility(info);
1456 rc2 = mdt_fix_reply(info);
1460 mdt_thread_info_fini(info);
1465 * Handler of layout intent RPC requiring the layout modification
1467 * \param[in] info thread environment
1468 * \param[in] obj object
1469 * \param[out] lhc object ldlm lock handle
1470 * \param[in] layout layout change descriptor
1472 * \retval 0 on success
1473 * \retval < 0 error code
1475 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
1476 struct mdt_lock_handle *lhc,
1477 struct md_layout_change *layout)
1483 if (!mdt_object_exists(obj))
1486 if (!S_ISREG(lu_object_attr(&obj->mot_obj)))
1489 rc = mo_permission(info->mti_env, NULL, mdt_object_child(obj), NULL,
1494 rc = mdt_check_resent_lock(info, obj, lhc);
1500 mdt_lock_handle_init(lhc);
1501 mdt_lock_reg_init(lhc, LCK_EX);
1502 rc = mdt_reint_object_lock(info, obj, lhc, MDS_INODELOCK_LAYOUT,
1508 mutex_lock(&obj->mot_som_mutex);
1509 rc = mo_layout_change(info->mti_env, mdt_object_child(obj), layout);
1510 mutex_unlock(&obj->mot_som_mutex);
1513 mdt_object_unlock(info, obj, lhc, 1);
1519 * Exchange MOF_LOV_CREATED flags between two objects after a
1520 * layout swap. No assumption is made on whether o1 or o2 have
1521 * created objects or not.
1523 * \param[in,out] o1 First swap layout object
1524 * \param[in,out] o2 Second swap layout object
1526 static void mdt_swap_lov_flag(struct mdt_object *o1, struct mdt_object *o2)
1528 unsigned int o1_lov_created = o1->mot_lov_created;
1530 mutex_lock(&o1->mot_lov_mutex);
1531 mutex_lock(&o2->mot_lov_mutex);
1533 o1->mot_lov_created = o2->mot_lov_created;
1534 o2->mot_lov_created = o1_lov_created;
1536 mutex_unlock(&o2->mot_lov_mutex);
1537 mutex_unlock(&o1->mot_lov_mutex);
1540 static int mdt_swap_layouts(struct tgt_session_info *tsi)
1542 struct mdt_thread_info *info;
1543 struct ptlrpc_request *req = tgt_ses_req(tsi);
1544 struct obd_export *exp = req->rq_export;
1545 struct mdt_object *o1, *o2, *o;
1546 struct mdt_lock_handle *lh1, *lh2;
1547 struct mdc_swap_layouts *msl;
1551 /* client does not support layout lock, so layout swaping
1553 * FIXME: there is a problem for old clients which don't support
1554 * layout lock yet. If those clients have already opened the file
1555 * they won't be notified at all so that old layout may still be
1556 * used to do IO. This can be fixed after file release is landed by
1557 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1558 if (!exp_connect_layout(exp))
1559 RETURN(-EOPNOTSUPP);
1561 info = tsi2mdt_info(tsi);
1562 if (unlikely(info->mti_object == NULL))
1565 if (info->mti_dlm_req != NULL)
1566 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
1568 o1 = info->mti_object;
1569 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1570 &info->mti_body->mbo_fid2);
1572 GOTO(out, rc = PTR_ERR(o));
1574 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1575 GOTO(put, rc = -ENOENT);
1577 rc = lu_fid_cmp(&info->mti_body->mbo_fid1, &info->mti_body->mbo_fid2);
1578 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1584 /* permission check. Make sure the calling process having permission
1585 * to write both files. */
1586 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1591 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1596 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1598 GOTO(put, rc = -EPROTO);
1600 lh1 = &info->mti_lh[MDT_LH_NEW];
1601 mdt_lock_reg_init(lh1, LCK_EX);
1602 lh2 = &info->mti_lh[MDT_LH_OLD];
1603 mdt_lock_reg_init(lh2, LCK_EX);
1605 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1606 MDS_INODELOCK_XATTR);
1610 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1611 MDS_INODELOCK_XATTR);
1615 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1616 mdt_object_child(o2), msl->msl_flags);
1620 mdt_swap_lov_flag(o1, o2);
1623 mdt_object_unlock(info, o2, lh2, rc);
1625 mdt_object_unlock(info, o1, lh1, rc);
1627 mdt_object_put(info->mti_env, o);
1629 mdt_thread_info_fini(info);
1633 static int mdt_raw_lookup(struct mdt_thread_info *info,
1634 struct mdt_object *parent,
1635 const struct lu_name *lname,
1636 struct ldlm_reply *ldlm_rep)
1638 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1642 LASSERT(!info->mti_cross_ref);
1644 /* Only got the fid of this obj by name */
1645 fid_zero(child_fid);
1646 rc = mdo_lookup(info->mti_env, mdt_object_child(info->mti_object),
1647 lname, child_fid, &info->mti_spec);
1649 struct mdt_body *repbody;
1651 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1652 repbody->mbo_fid1 = *child_fid;
1653 repbody->mbo_valid = OBD_MD_FLID;
1654 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1655 } else if (rc == -ENOENT) {
1656 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1663 * UPDATE lock should be taken against parent, and be released before exit;
1664 * child_bits lock should be taken against child, and be returned back:
1665 * (1)normal request should release the child lock;
1666 * (2)intent request will grant the lock to client.
1668 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1669 struct mdt_lock_handle *lhc,
1671 struct ldlm_reply *ldlm_rep)
1673 struct ptlrpc_request *req = mdt_info_req(info);
1674 struct mdt_body *reqbody = NULL;
1675 struct mdt_object *parent = info->mti_object;
1676 struct mdt_object *child;
1677 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1678 struct lu_name *lname = NULL;
1679 struct mdt_lock_handle *lhp = NULL;
1680 struct ldlm_lock *lock;
1681 struct req_capsule *pill = info->mti_pill;
1689 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1690 LASSERT(ergo(is_resent,
1691 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1696 if (info->mti_cross_ref) {
1697 /* Only getattr on the child. Parent is on another node. */
1698 mdt_set_disposition(info, ldlm_rep,
1699 DISP_LOOKUP_EXECD | DISP_LOOKUP_POS);
1701 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1703 PFID(mdt_object_fid(child)), ldlm_rep);
1705 rc = mdt_check_resent_lock(info, child, lhc);
1708 } else if (rc > 0) {
1709 mdt_lock_handle_init(lhc);
1710 mdt_lock_reg_init(lhc, LCK_PR);
1713 * Object's name entry is on another MDS, it will
1714 * request PERM lock only because LOOKUP lock is owned
1715 * by the MDS where name entry resides.
1717 * TODO: it should try layout lock too. - Jinshan
1719 child_bits &= ~(MDS_INODELOCK_LOOKUP |
1720 MDS_INODELOCK_LAYOUT);
1721 child_bits |= MDS_INODELOCK_PERM;
1723 rc = mdt_object_lock(info, child, lhc, child_bits);
1728 /* Finally, we can get attr for child. */
1729 if (!mdt_object_exists(child)) {
1730 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
1732 "remote object doesn't exist.");
1733 mdt_object_unlock(info, child, lhc, 1);
1737 rc = mdt_getattr_internal(info, child, 0);
1738 if (unlikely(rc != 0))
1739 mdt_object_unlock(info, child, lhc, 1);
1741 mdt_pack_secctx_in_reply(info, child);
1746 lname = &info->mti_name;
1747 mdt_name_unpack(pill, &RMF_NAME, lname, MNF_FIX_ANON);
1749 if (lu_name_is_valid(lname)) {
1750 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", "
1751 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1752 PNAME(lname), ldlm_rep);
1754 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1755 if (unlikely(reqbody == NULL))
1756 RETURN(err_serious(-EPROTO));
1758 *child_fid = reqbody->mbo_fid2;
1760 if (unlikely(!fid_is_sane(child_fid)))
1761 RETURN(err_serious(-EINVAL));
1763 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1765 PFID(mdt_object_fid(parent)),
1766 PFID(&reqbody->mbo_fid2), ldlm_rep);
1769 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1771 if (unlikely(!mdt_object_exists(parent)) && lu_name_is_valid(lname)) {
1772 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1774 "Parent doesn't exist!");
1778 if (mdt_object_remote(parent)) {
1779 CERROR("%s: parent "DFID" is on remote target\n",
1780 mdt_obd_name(info->mti_mdt),
1781 PFID(mdt_object_fid(parent)));
1785 if (lu_name_is_valid(lname)) {
1786 /* Always allow to lookup ".." */
1787 if (unlikely(lname->ln_namelen == 2 &&
1788 lname->ln_name[0] == '.' &&
1789 lname->ln_name[1] == '.'))
1790 info->mti_spec.sp_permitted = 1;
1792 if (info->mti_body->mbo_valid == OBD_MD_FLID) {
1793 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1798 /* step 1: lock parent only if parent is a directory */
1799 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
1800 lhp = &info->mti_lh[MDT_LH_PARENT];
1801 mdt_lock_pdo_init(lhp, LCK_PR, lname);
1802 rc = mdt_object_lock(info, parent, lhp,
1803 MDS_INODELOCK_UPDATE);
1804 if (unlikely(rc != 0))
1808 /* step 2: lookup child's fid by name */
1809 fid_zero(child_fid);
1810 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
1811 child_fid, &info->mti_spec);
1813 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1816 GOTO(out_parent, rc);
1819 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1822 *step 3: find the child object by fid & lock it.
1823 * regardless if it is local or remote.
1825 *Note: LU-3240 (commit 762f2114d282a98ebfa4dbbeea9298a8088ad24e)
1826 * set parent dir fid the same as child fid in getattr by fid case
1827 * we should not lu_object_find() the object again, could lead
1828 * to hung if there is a concurrent unlink destroyed the object.
1830 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
1831 mdt_object_get(info->mti_env, parent);
1834 child = mdt_object_find(info->mti_env, info->mti_mdt,
1838 if (unlikely(IS_ERR(child)))
1839 GOTO(out_parent, rc = PTR_ERR(child));
1841 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout * 2);
1842 if (!mdt_object_exists(child)) {
1843 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1845 "Object doesn't exist!");
1846 GOTO(out_child, rc = -ENOENT);
1849 rc = mdt_check_resent_lock(info, child, lhc);
1851 GOTO(out_child, rc);
1852 } else if (rc > 0) {
1853 mdt_lock_handle_init(lhc);
1854 mdt_lock_reg_init(lhc, LCK_PR);
1856 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1857 mdt_object_exists(child) && !mdt_object_remote(child)) {
1858 struct md_attr *ma = &info->mti_attr;
1861 ma->ma_need = MA_INODE;
1862 rc = mdt_attr_get_complex(info, child, ma);
1863 if (unlikely(rc != 0))
1864 GOTO(out_child, rc);
1866 /* If the file has not been changed for some time, we
1867 * return not only a LOOKUP lock, but also an UPDATE
1868 * lock and this might save us RPC on later STAT. For
1869 * directories, it also let negative dentry cache start
1870 * working for this dir. */
1871 if (ma->ma_valid & MA_INODE &&
1872 ma->ma_attr.la_valid & LA_CTIME &&
1873 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1874 ma->ma_attr.la_ctime < ktime_get_real_seconds())
1875 child_bits |= MDS_INODELOCK_UPDATE;
1878 /* layout lock must be granted in a best-effort way
1879 * for IT operations */
1880 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1881 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
1882 !mdt_object_remote(child) && ldlm_rep != NULL) {
1883 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1884 exp_connect_layout(info->mti_exp)) {
1885 /* try to grant layout lock for regular file. */
1886 try_bits = MDS_INODELOCK_LAYOUT;
1888 /* Acquire DOM lock in advance for data-on-mdt file */
1889 if (child != parent)
1890 try_bits |= MDS_INODELOCK_DOM;
1893 if (try_bits != 0) {
1894 /* try layout lock, it may fail to be granted due to
1895 * contention at LOOKUP or UPDATE */
1896 rc = mdt_object_lock_try(info, child, lhc, &child_bits,
1898 if (child_bits & MDS_INODELOCK_LAYOUT)
1901 /* Do not enqueue the UPDATE lock from MDT(cross-MDT),
1902 * client will enqueue the lock to the remote MDT */
1903 if (mdt_object_remote(child))
1904 child_bits &= ~MDS_INODELOCK_UPDATE;
1905 rc = mdt_object_lock(info, child, lhc, child_bits);
1907 if (unlikely(rc != 0))
1908 GOTO(out_child, rc);
1911 /* finally, we can get attr for child. */
1912 rc = mdt_getattr_internal(info, child, ma_need);
1913 if (unlikely(rc != 0)) {
1914 mdt_object_unlock(info, child, lhc, 1);
1915 GOTO(out_child, rc);
1918 mdt_pack_secctx_in_reply(info, child);
1920 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1922 /* Debugging code. */
1923 LDLM_DEBUG(lock, "Returning lock to client");
1924 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1925 &lock->l_resource->lr_name),
1926 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1927 PLDLMRES(lock->l_resource),
1928 PFID(mdt_object_fid(child)));
1930 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
1931 mdt_object_exists(child) && !mdt_object_remote(child) &&
1933 mdt_object_put(info->mti_env, child);
1934 rc = mdt_pack_size2body(info, child_fid,
1936 if (rc != 0 && child_bits & MDS_INODELOCK_DOM) {
1937 /* DOM lock was taken in advance but this is
1938 * not DoM file. Drop the lock.
1940 lock_res_and_lock(lock);
1941 ldlm_inodebits_drop(lock, MDS_INODELOCK_DOM);
1942 unlock_res_and_lock(lock);
1944 LDLM_LOCK_PUT(lock);
1945 GOTO(out_parent, rc = 0);
1947 LDLM_LOCK_PUT(lock);
1952 mdt_object_put(info->mti_env, child);
1955 mdt_object_unlock(info, parent, lhp, 1);
1959 /* normal handler: should release the child lock */
1960 static int mdt_getattr_name(struct tgt_session_info *tsi)
1962 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1963 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1964 struct mdt_body *reqbody;
1965 struct mdt_body *repbody;
1969 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1970 LASSERT(reqbody != NULL);
1971 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1972 LASSERT(repbody != NULL);
1974 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1975 repbody->mbo_eadatasize = 0;
1976 repbody->mbo_aclsize = 0;
1978 rc = mdt_init_ucred_intent_getattr(info, reqbody);
1980 GOTO(out_shrink, rc);
1982 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1983 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1984 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1985 lhc->mlh_reg_lh.cookie = 0;
1987 mdt_exit_ucred(info);
1990 mdt_client_compatibility(info);
1991 rc2 = mdt_fix_reply(info);
1994 mdt_thread_info_fini(info);
1998 static int mdt_rmfid_unlink(struct mdt_thread_info *info,
1999 const struct lu_fid *pfid,
2000 const struct lu_name *name,
2001 struct mdt_object *obj, s64 ctime)
2003 struct lu_fid *child_fid = &info->mti_tmp_fid1;
2004 struct ldlm_enqueue_info *einfo = &info->mti_einfo[0];
2005 struct mdt_device *mdt = info->mti_mdt;
2006 struct md_attr *ma = &info->mti_attr;
2007 struct mdt_lock_handle *parent_lh;
2008 struct mdt_lock_handle *child_lh;
2009 struct mdt_object *pobj;
2010 bool cos_incompat = false;
2014 pobj = mdt_object_find(info->mti_env, mdt, pfid);
2016 GOTO(out, rc = PTR_ERR(pobj));
2018 parent_lh = &info->mti_lh[MDT_LH_PARENT];
2019 mdt_lock_pdo_init(parent_lh, LCK_PW, name);
2020 rc = mdt_object_lock(info, pobj, parent_lh, MDS_INODELOCK_UPDATE);
2022 GOTO(put_parent, rc);
2024 if (mdt_object_remote(pobj))
2025 cos_incompat = true;
2027 rc = mdo_lookup(info->mti_env, mdt_object_child(pobj),
2028 name, child_fid, &info->mti_spec);
2030 GOTO(unlock_parent, rc);
2032 if (!lu_fid_eq(child_fid, mdt_object_fid(obj)))
2033 GOTO(unlock_parent, rc = -EREMCHG);
2035 child_lh = &info->mti_lh[MDT_LH_CHILD];
2036 mdt_lock_reg_init(child_lh, LCK_EX);
2037 rc = mdt_reint_striped_lock(info, obj, child_lh,
2038 MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE,
2039 einfo, cos_incompat);
2041 GOTO(unlock_parent, rc);
2043 if (atomic_read(&obj->mot_open_count)) {
2044 CDEBUG(D_OTHER, "object "DFID" open, skip\n",
2045 PFID(mdt_object_fid(obj)));
2046 GOTO(unlock_child, rc = -EBUSY);
2050 ma->ma_valid = MA_INODE;
2051 ma->ma_attr.la_valid = LA_CTIME;
2052 ma->ma_attr.la_ctime = ctime;
2054 mutex_lock(&obj->mot_lov_mutex);
2056 rc = mdo_unlink(info->mti_env, mdt_object_child(pobj),
2057 mdt_object_child(obj), name, ma, 0);
2059 mutex_unlock(&obj->mot_lov_mutex);
2062 mdt_reint_striped_unlock(info, obj, child_lh, einfo, 1);
2064 mdt_object_unlock(info, pobj, parent_lh, 1);
2066 mdt_object_put(info->mti_env, pobj);
2071 static int mdt_rmfid_check_permission(struct mdt_thread_info *info,
2072 struct mdt_object *obj)
2074 struct lu_ucred *uc = lu_ucred(info->mti_env);
2075 struct md_attr *ma = &info->mti_attr;
2076 struct lu_attr *la = &ma->ma_attr;
2080 ma->ma_need = MA_INODE;
2081 rc = mo_attr_get(info->mti_env, mdt_object_child(obj), ma);
2085 if (la->la_flags & LUSTRE_IMMUTABLE_FL)
2088 if (md_capable(uc, CFS_CAP_DAC_OVERRIDE))
2090 if (uc->uc_fsuid == la->la_uid) {
2091 if ((la->la_mode & S_IWUSR) == 0)
2093 } else if (uc->uc_fsgid == la->la_gid) {
2094 if ((la->la_mode & S_IWGRP) == 0)
2096 } else if ((la->la_mode & S_IWOTH) == 0) {
2104 static int mdt_rmfid_one(struct mdt_thread_info *info, struct lu_fid *fid,
2107 struct mdt_device *mdt = info->mti_mdt;
2108 struct mdt_object *obj = NULL;
2109 struct linkea_data ldata = { NULL };
2110 struct lu_buf *buf = &info->mti_big_buf;
2111 struct lu_name *name = &info->mti_name;
2112 struct lu_fid *pfid = &info->mti_tmp_fid1;
2113 struct link_ea_header *leh;
2114 struct link_ea_entry *lee;
2115 int reclen, count, rc = 0;
2118 if (!fid_is_sane(fid))
2119 GOTO(out, rc = -EINVAL);
2121 if (!fid_is_namespace_visible(fid))
2122 GOTO(out, rc = -EINVAL);
2124 obj = mdt_object_find(info->mti_env, mdt, fid);
2126 GOTO(out, rc = PTR_ERR(obj));
2128 if (mdt_object_remote(obj))
2129 GOTO(out, rc = -EREMOTE);
2130 if (!mdt_object_exists(obj) || lu_object_is_dying(&obj->mot_header))
2131 GOTO(out, rc = -ENOENT);
2133 rc = mdt_rmfid_check_permission(info, obj);
2138 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
2140 GOTO(out, rc = -ENOMEM);
2143 rc = mdt_links_read(info, obj, &ldata);
2148 lee = (struct link_ea_entry *)(leh + 1);
2149 for (count = 0; count < leh->leh_reccount; count++) {
2150 /* remove every hardlink */
2151 linkea_entry_unpack(lee, &reclen, name, pfid);
2152 lee = (struct link_ea_entry *) ((char *)lee + reclen);
2153 rc = mdt_rmfid_unlink(info, pfid, name, obj, ctime);
2159 if (obj && !IS_ERR(obj))
2160 mdt_object_put(info->mti_env, obj);
2161 if (info->mti_big_buf.lb_buf)
2162 lu_buf_free(&info->mti_big_buf);
2167 static int mdt_rmfid(struct tgt_session_info *tsi)
2169 struct mdt_thread_info *mti = tsi2mdt_info(tsi);
2170 struct mdt_body *reqbody;
2171 struct lu_fid *fids, *rfids;
2177 reqbody = req_capsule_client_get(tsi->tsi_pill, &RMF_MDT_BODY);
2178 if (reqbody == NULL)
2180 bufsize = req_capsule_get_size(tsi->tsi_pill, &RMF_FID_ARRAY,
2182 nr = bufsize / sizeof(struct lu_fid);
2183 if (nr * sizeof(struct lu_fid) != bufsize)
2185 req_capsule_set_size(tsi->tsi_pill, &RMF_RCS,
2186 RCL_SERVER, nr * sizeof(__u32));
2187 req_capsule_set_size(tsi->tsi_pill, &RMF_FID_ARRAY,
2188 RCL_SERVER, nr * sizeof(struct lu_fid));
2189 rc = req_capsule_server_pack(tsi->tsi_pill);
2191 GOTO(out, rc = err_serious(rc));
2192 fids = req_capsule_client_get(tsi->tsi_pill, &RMF_FID_ARRAY);
2195 rcs = req_capsule_server_get(tsi->tsi_pill, &RMF_RCS);
2197 rfids = req_capsule_server_get(tsi->tsi_pill, &RMF_FID_ARRAY);
2200 mdt_init_ucred(mti, reqbody);
2201 for (i = 0; i < nr; i++) {
2203 rcs[i] = mdt_rmfid_one(mti, fids + i, reqbody->mbo_ctime);
2205 mdt_exit_ucred(mti);
2211 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2212 void *karg, void __user *uarg);
2214 static int mdt_set_info(struct tgt_session_info *tsi)
2216 struct ptlrpc_request *req = tgt_ses_req(tsi);
2219 int keylen, vallen, rc = 0;
2223 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
2225 DEBUG_REQ(D_HA, req, "no set_info key");
2226 RETURN(err_serious(-EFAULT));
2229 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
2232 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
2234 DEBUG_REQ(D_HA, req, "no set_info val");
2235 RETURN(err_serious(-EFAULT));
2238 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
2241 /* Swab any part of val you need to here */
2242 if (KEY_IS(KEY_READ_ONLY)) {
2243 spin_lock(&req->rq_export->exp_lock);
2245 *exp_connect_flags_ptr(req->rq_export) |=
2248 *exp_connect_flags_ptr(req->rq_export) &=
2249 ~OBD_CONNECT_RDONLY;
2250 spin_unlock(&req->rq_export->exp_lock);
2251 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2252 struct changelog_setinfo *cs = val;
2254 if (vallen != sizeof(*cs)) {
2255 CERROR("%s: bad changelog_clear setinfo size %d\n",
2256 tgt_name(tsi->tsi_tgt), vallen);
2259 if (ptlrpc_req_need_swab(req)) {
2260 __swab64s(&cs->cs_recno);
2261 __swab32s(&cs->cs_id);
2264 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
2266 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
2268 obd_export_evict_by_nid(req->rq_export->exp_obd, val);
2275 static int mdt_readpage(struct tgt_session_info *tsi)
2277 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
2278 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
2279 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
2280 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
2281 struct mdt_body *repbody;
2287 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
2288 RETURN(err_serious(-ENOMEM));
2290 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
2291 if (repbody == NULL || reqbody == NULL)
2292 RETURN(err_serious(-EFAULT));
2295 * prepare @rdpg before calling lower layers and transfer itself. Here
2296 * reqbody->size contains offset of where to start to read and
2297 * reqbody->nlink contains number bytes to read.
2299 rdpg->rp_hash = reqbody->mbo_size;
2300 if (rdpg->rp_hash != reqbody->mbo_size) {
2301 CERROR("Invalid hash: %#llx != %#llx\n",
2302 rdpg->rp_hash, reqbody->mbo_size);
2306 rdpg->rp_attrs = reqbody->mbo_mode;
2307 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
2308 rdpg->rp_attrs |= LUDA_64BITHASH;
2309 rdpg->rp_count = min_t(unsigned int, reqbody->mbo_nlink,
2310 exp_max_brw_size(tsi->tsi_exp));
2311 rdpg->rp_npages = (rdpg->rp_count + PAGE_SIZE - 1) >>
2313 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
2314 if (rdpg->rp_pages == NULL)
2317 for (i = 0; i < rdpg->rp_npages; ++i) {
2318 rdpg->rp_pages[i] = alloc_page(GFP_NOFS);
2319 if (rdpg->rp_pages[i] == NULL)
2320 GOTO(free_rdpg, rc = -ENOMEM);
2323 /* call lower layers to fill allocated pages with directory data */
2324 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
2326 GOTO(free_rdpg, rc);
2328 /* send pages to client */
2329 rc = tgt_sendpage(tsi, rdpg, rc);
2334 for (i = 0; i < rdpg->rp_npages; i++)
2335 if (rdpg->rp_pages[i] != NULL)
2336 __free_page(rdpg->rp_pages[i]);
2337 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
2339 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
2345 static int mdt_fix_attr_ucred(struct mdt_thread_info *info, __u32 op)
2347 struct lu_ucred *uc = mdt_ucred_check(info);
2348 struct lu_attr *attr = &info->mti_attr.ma_attr;
2353 if (op != REINT_SETATTR) {
2354 if ((attr->la_valid & LA_UID) && (attr->la_uid != -1))
2355 attr->la_uid = uc->uc_fsuid;
2356 /* for S_ISGID, inherit gid from his parent, such work will be
2357 * done in cmm/mdd layer, here set all cases as uc->uc_fsgid. */
2358 if ((attr->la_valid & LA_GID) && (attr->la_gid != -1))
2359 attr->la_gid = uc->uc_fsgid;
2365 static inline bool mdt_is_readonly_open(struct mdt_thread_info *info, __u32 op)
2367 return op == REINT_OPEN &&
2368 !(info->mti_spec.sp_cr_flags & (MDS_FMODE_WRITE | MDS_OPEN_CREAT));
2371 static void mdt_preset_secctx_size(struct mdt_thread_info *info)
2373 struct req_capsule *pill = info->mti_pill;
2375 if (req_capsule_has_field(pill, &RMF_FILE_SECCTX,
2377 req_capsule_has_field(pill, &RMF_FILE_SECCTX_NAME,
2379 if (req_capsule_get_size(pill, &RMF_FILE_SECCTX_NAME,
2381 /* pre-set size in server part with max size */
2382 req_capsule_set_size(pill, &RMF_FILE_SECCTX,
2384 info->mti_mdt->mdt_max_ea_size);
2386 req_capsule_set_size(pill, &RMF_FILE_SECCTX,
2393 static int mdt_reint_internal(struct mdt_thread_info *info,
2394 struct mdt_lock_handle *lhc,
2397 struct req_capsule *pill = info->mti_pill;
2398 struct mdt_body *repbody;
2403 rc = mdt_reint_unpack(info, op);
2405 CERROR("Can't unpack reint, rc %d\n", rc);
2406 RETURN(err_serious(rc));
2410 /* check if the file system is set to readonly. O_RDONLY open
2411 * is still allowed even the file system is set to readonly mode */
2412 if (mdt_rdonly(info->mti_exp) && !mdt_is_readonly_open(info, op))
2413 RETURN(err_serious(-EROFS));
2415 /* for replay (no_create) lmm is not needed, client has it already */
2416 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2417 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2420 /* llog cookies are always 0, the field is kept for compatibility */
2421 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2422 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
2424 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
2425 * by default. If the target object has more ACL entries, then
2426 * enlarge the buffer when necessary. */
2427 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
2428 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
2429 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
2431 mdt_preset_secctx_size(info);
2433 rc = req_capsule_server_pack(pill);
2435 CERROR("Can't pack response, rc %d\n", rc);
2436 RETURN(err_serious(rc));
2439 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
2440 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
2442 repbody->mbo_eadatasize = 0;
2443 repbody->mbo_aclsize = 0;
2446 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
2448 /* for replay no cookkie / lmm need, because client have this already */
2449 if (info->mti_spec.no_create)
2450 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2451 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
2453 rc = mdt_init_ucred_reint(info);
2455 GOTO(out_shrink, rc);
2457 rc = mdt_fix_attr_ucred(info, op);
2459 GOTO(out_ucred, rc = err_serious(rc));
2461 rc = mdt_check_resent(info, mdt_reconstruct, lhc);
2463 GOTO(out_ucred, rc);
2464 } else if (rc == 1) {
2465 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt");
2466 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
2467 GOTO(out_ucred, rc);
2469 rc = mdt_reint_rec(info, lhc);
2472 mdt_exit_ucred(info);
2474 mdt_client_compatibility(info);
2476 rc2 = mdt_fix_reply(info);
2481 * Data-on-MDT optimization - read data along with OPEN and return it
2482 * in reply. Do that only if we have both DOM and LAYOUT locks.
2484 if (rc == 0 && op == REINT_OPEN && !req_is_replay(pill->rc_req) &&
2485 info->mti_attr.ma_lmm != NULL &&
2486 mdt_lmm_dom_entry(info->mti_attr.ma_lmm) == LMM_DOM_ONLY) {
2487 rc = mdt_dom_read_on_open(info, info->mti_mdt,
2494 static long mdt_reint_opcode(struct ptlrpc_request *req,
2495 const struct req_format **fmt)
2497 struct mdt_device *mdt;
2498 struct mdt_rec_reint *rec;
2501 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
2503 opc = rec->rr_opcode;
2504 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
2505 if (opc < REINT_MAX && fmt[opc] != NULL)
2506 req_capsule_extend(&req->rq_pill, fmt[opc]);
2508 mdt = mdt_exp2dev(req->rq_export);
2509 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
2510 " rc = %d\n", req->rq_export->exp_obd->obd_name,
2511 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
2512 opc = err_serious(-EFAULT);
2515 opc = err_serious(-EFAULT);
2520 static int mdt_reint(struct tgt_session_info *tsi)
2524 static const struct req_format *reint_fmts[REINT_MAX] = {
2525 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
2526 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
2527 [REINT_LINK] = &RQF_MDS_REINT_LINK,
2528 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
2529 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
2530 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
2531 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
2532 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
2533 [REINT_MIGRATE] = &RQF_MDS_REINT_MIGRATE,
2534 [REINT_RESYNC] = &RQF_MDS_REINT_RESYNC,
2539 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
2541 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2543 * No lock possible here from client to pass it to reint code
2546 rc = mdt_reint_internal(info, NULL, opc);
2547 mdt_thread_info_fini(info);
2552 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
2556 /* this should sync the whole device */
2557 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
2559 struct dt_device *dt = mdt->mdt_bottom;
2563 rc = dt->dd_ops->dt_sync(env, dt);
2567 /* this should sync this object */
2568 static int mdt_object_sync(const struct lu_env *env, struct obd_export *exp,
2569 struct mdt_object *mo)
2575 if (!mdt_object_exists(mo)) {
2576 CWARN("%s: non existing object "DFID": rc = %d\n",
2577 exp->exp_obd->obd_name, PFID(mdt_object_fid(mo)),
2582 if (S_ISREG(lu_object_attr(&mo->mot_obj))) {
2583 struct lu_target *tgt = tgt_ses_info(env)->tsi_tgt;
2584 dt_obj_version_t version;
2586 version = dt_version_get(env, mdt_obj2dt(mo));
2587 if (version > tgt->lut_obd->obd_last_committed)
2588 rc = mo_object_sync(env, mdt_object_child(mo));
2590 rc = mo_object_sync(env, mdt_object_child(mo));
2596 static int mdt_sync(struct tgt_session_info *tsi)
2598 struct ptlrpc_request *req = tgt_ses_req(tsi);
2599 struct req_capsule *pill = tsi->tsi_pill;
2600 struct mdt_body *body;
2605 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
2606 RETURN(err_serious(-ENOMEM));
2608 if (fid_seq(&tsi->tsi_mdt_body->mbo_fid1) == 0) {
2609 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
2611 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2613 if (unlikely(info->mti_object == NULL))
2616 /* sync an object */
2617 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp,
2620 const struct lu_fid *fid;
2621 struct lu_attr *la = &info->mti_attr.ma_attr;
2623 info->mti_attr.ma_need = MA_INODE;
2624 info->mti_attr.ma_valid = 0;
2625 rc = mdt_attr_get_complex(info, info->mti_object,
2628 body = req_capsule_server_get(pill,
2630 fid = mdt_object_fid(info->mti_object);
2631 mdt_pack_attr2body(info, body, la, fid);
2634 mdt_thread_info_fini(info);
2637 mdt_counter_incr(req, LPROC_MDT_SYNC);
2642 static int mdt_data_sync(struct tgt_session_info *tsi)
2644 struct mdt_thread_info *info;
2645 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2646 struct ost_body *body = tsi->tsi_ost_body;
2647 struct ost_body *repbody;
2648 struct mdt_object *mo = NULL;
2654 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
2656 /* if no fid is specified then do nothing,
2657 * device sync is done via MDS_SYNC */
2658 if (fid_is_zero(&tsi->tsi_fid))
2661 mo = mdt_object_find(tsi->tsi_env, mdt, &tsi->tsi_fid);
2663 RETURN(PTR_ERR(mo));
2665 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp, mo);
2669 repbody->oa.o_oi = body->oa.o_oi;
2670 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
2672 info = tsi2mdt_info(tsi);
2673 ma = &info->mti_attr;
2674 ma->ma_need = MA_INODE;
2676 rc = mdt_attr_get_complex(info, mo, ma);
2678 obdo_from_la(&repbody->oa, &ma->ma_attr, VALID_FLAGS);
2681 mdt_thread_info_fini(info);
2686 mdt_object_put(tsi->tsi_env, mo);
2691 * Handle quota control requests to consult current usage/limit, but also
2692 * to configure quota enforcement
2694 static int mdt_quotactl(struct tgt_session_info *tsi)
2696 struct obd_export *exp = tsi->tsi_exp;
2697 struct req_capsule *pill = tsi->tsi_pill;
2698 struct obd_quotactl *oqctl, *repoqc;
2700 struct mdt_device *mdt = mdt_exp2dev(exp);
2701 struct lu_device *qmt = mdt->mdt_qmt_dev;
2702 struct lu_nodemap *nodemap;
2705 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
2707 RETURN(err_serious(-EPROTO));
2709 rc = req_capsule_server_pack(pill);
2711 RETURN(err_serious(rc));
2713 nodemap = nodemap_get_from_exp(exp);
2714 if (IS_ERR(nodemap))
2715 RETURN(PTR_ERR(nodemap));
2717 switch (oqctl->qc_cmd) {
2718 /* master quotactl */
2721 case LUSTRE_Q_SETDEFAULT:
2722 if (!nodemap_can_setquota(nodemap))
2723 GOTO(out_nodemap, rc = -EPERM);
2727 case LUSTRE_Q_GETDEFAULT:
2729 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2730 /* slave quotactl */
2736 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2737 GOTO(out_nodemap, rc = -EFAULT);
2741 switch (oqctl->qc_type) {
2743 id = nodemap_map_id(nodemap, NODEMAP_UID,
2744 NODEMAP_CLIENT_TO_FS, id);
2747 id = nodemap_map_id(nodemap, NODEMAP_GID,
2748 NODEMAP_CLIENT_TO_FS, id);
2751 /* todo: check/map project id */
2755 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2757 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
2759 GOTO(out_nodemap, rc = err_serious(-EFAULT));
2761 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA)
2762 barrier_exit(tsi->tsi_tgt->lut_bottom);
2764 if (oqctl->qc_id != id)
2765 swap(oqctl->qc_id, id);
2767 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA) {
2768 if (unlikely(!barrier_entry(tsi->tsi_tgt->lut_bottom)))
2769 RETURN(-EINPROGRESS);
2772 switch (oqctl->qc_cmd) {
2778 case LUSTRE_Q_SETDEFAULT:
2779 case LUSTRE_Q_GETDEFAULT:
2780 /* forward quotactl request to QMT */
2781 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
2786 /* slave quotactl */
2787 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
2792 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2793 GOTO(out_nodemap, rc = -EFAULT);
2796 if (oqctl->qc_id != id)
2797 swap(oqctl->qc_id, id);
2804 nodemap_putref(nodemap);
2809 /** clone llog ctxt from child (mdd)
2810 * This allows remote llog (replicator) access.
2811 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2812 * context was originally set up, or we can handle them directly.
2813 * I choose the latter, but that means I need any llog
2814 * contexts set up by child to be accessable by the mdt. So we clone the
2815 * context into our context list here.
2817 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2820 struct md_device *next = mdt->mdt_child;
2821 struct llog_ctxt *ctxt;
2824 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2827 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2828 if (rc || ctxt == NULL) {
2832 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2834 CERROR("Can't set mdt ctxt %d\n", rc);
2839 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2840 struct mdt_device *mdt, int idx)
2842 struct llog_ctxt *ctxt;
2844 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2847 /* Put once for the get we just did, and once for the clone */
2848 llog_ctxt_put(ctxt);
2849 llog_ctxt_put(ctxt);
2854 * sec context handlers
2856 static int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
2858 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2864 * quota request handlers
2866 static int mdt_quota_dqacq(struct tgt_session_info *tsi)
2868 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2869 struct lu_device *qmt = mdt->mdt_qmt_dev;
2874 RETURN(err_serious(-EOPNOTSUPP));
2876 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
2880 struct mdt_object *mdt_object_new(const struct lu_env *env,
2881 struct mdt_device *d,
2882 const struct lu_fid *f)
2884 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2885 struct lu_object *o;
2886 struct mdt_object *m;
2889 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2890 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
2891 if (unlikely(IS_ERR(o)))
2892 m = (struct mdt_object *)o;
2898 struct mdt_object *mdt_object_find(const struct lu_env *env,
2899 struct mdt_device *d,
2900 const struct lu_fid *f)
2902 struct lu_object *o;
2903 struct mdt_object *m;
2906 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2907 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
2908 if (unlikely(IS_ERR(o)))
2909 m = (struct mdt_object *)o;
2917 * Asyncronous commit for mdt device.
2919 * Pass asynchonous commit call down the MDS stack.
2921 * \param env environment
2922 * \param mdt the mdt device
2924 static void mdt_device_commit_async(const struct lu_env *env,
2925 struct mdt_device *mdt)
2927 struct dt_device *dt = mdt->mdt_bottom;
2931 rc = dt->dd_ops->dt_commit_async(env, dt);
2932 if (unlikely(rc != 0))
2933 CWARN("%s: async commit start failed: rc = %d\n",
2934 mdt_obd_name(mdt), rc);
2935 atomic_inc(&mdt->mdt_async_commit_count);
2940 * Mark the lock as "synchonous".
2942 * Mark the lock to deffer transaction commit to the unlock time.
2944 * \param lock the lock to mark as "synchonous"
2946 * \see mdt_is_lock_sync
2947 * \see mdt_save_lock
2949 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2951 lock->l_ast_data = (void*)1;
2955 * Check whehter the lock "synchonous" or not.
2957 * \param lock the lock to check
2958 * \retval 1 the lock is "synchonous"
2959 * \retval 0 the lock isn't "synchronous"
2961 * \see mdt_set_lock_sync
2962 * \see mdt_save_lock
2964 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2966 return lock->l_ast_data != NULL;
2970 * Blocking AST for mdt locks.
2972 * Starts transaction commit if in case of COS lock conflict or
2973 * deffers such a commit to the mdt_save_lock.
2975 * \param lock the lock which blocks a request or cancelling lock
2976 * \param desc unused
2977 * \param data unused
2978 * \param flag indicates whether this cancelling or blocking callback
2980 * \see ldlm_blocking_ast_nocheck
2982 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2983 void *data, int flag)
2985 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2986 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2987 struct ldlm_cb_set_arg *arg = data;
2988 bool commit_async = false;
2992 if (flag == LDLM_CB_CANCELING)
2995 lock_res_and_lock(lock);
2996 if (lock->l_blocking_ast != mdt_blocking_ast) {
2997 unlock_res_and_lock(lock);
3001 /* A blocking ast may be sent from ldlm_lock_decref_internal
3002 * when the last reference to a local lock was released and
3003 * during blocking event from ldlm_work_bl_ast_lock().
3004 * The 'data' parameter is l_ast_data in the first case and
3005 * callback arguments in the second one. Distinguish them by that.
3007 if (!data || data == lock->l_ast_data || !arg->bl_desc)
3008 goto skip_cos_checks;
3010 if (lock->l_req_mode & (LCK_PW | LCK_EX)) {
3011 if (mdt_cos_is_enabled(mdt)) {
3012 if (!arg->bl_desc->bl_same_client)
3013 mdt_set_lock_sync(lock);
3014 } else if (mdt_slc_is_enabled(mdt) &&
3015 arg->bl_desc->bl_cos_incompat) {
3016 mdt_set_lock_sync(lock);
3018 * we may do extra commit here, but there is a small
3019 * window to miss a commit: lock was unlocked (saved),
3020 * then a conflict lock queued and we come here, but
3021 * REP-ACK not received, so lock was not converted to
3023 * Fortunately this window is quite small, so the
3024 * extra commit should be rare (not to say distributed
3025 * operation is rare too).
3027 commit_async = true;
3029 } else if (lock->l_req_mode == LCK_COS) {
3030 commit_async = true;
3034 rc = ldlm_blocking_ast_nocheck(lock);
3039 rc = lu_env_init(&env, LCT_LOCAL);
3040 if (unlikely(rc != 0))
3041 CWARN("%s: lu_env initialization failed, cannot "
3042 "start asynchronous commit: rc = %d\n",
3045 mdt_device_commit_async(&env, mdt);
3052 * Blocking AST for cross-MDT lock
3054 * Discard lock from uncommitted_slc_locks and cancel it.
3056 * \param lock the lock which blocks a request or cancelling lock
3057 * \param desc unused
3058 * \param data unused
3059 * \param flag indicates whether this cancelling or blocking callback
3060 * \retval 0 on success
3061 * \retval negative number on error
3063 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
3064 void *data, int flag)
3070 case LDLM_CB_BLOCKING: {
3071 struct lustre_handle lockh;
3073 ldlm_lock2handle(lock, &lockh);
3074 rc = ldlm_cli_cancel(&lockh,
3075 ldlm_is_atomic_cb(lock) ? 0 : LCF_ASYNC);
3077 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
3082 case LDLM_CB_CANCELING: {
3083 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
3084 struct mdt_device *mdt =
3085 mdt_dev(obd->obd_lu_dev->ld_site->ls_top_dev);
3087 LDLM_DEBUG(lock, "Revoke remote lock\n");
3089 /* discard slc lock here so that it can be cleaned anytime,
3090 * especially for cleanup_resource() */
3091 tgt_discard_slc_lock(&mdt->mdt_lut, lock);
3093 /* once we cache lock, l_ast_data is set to mdt_object */
3094 if (lock->l_ast_data != NULL) {
3095 struct mdt_object *mo = lock->l_ast_data;
3098 rc = lu_env_init(&env, LCT_MD_THREAD);
3099 if (unlikely(rc != 0)) {
3100 CWARN("%s: lu_env initialization failed, object"
3101 "%p "DFID" is leaked!\n",
3103 PFID(mdt_object_fid(mo)));
3107 if (lock->l_policy_data.l_inodebits.bits &
3108 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)) {
3109 rc = mo_invalidate(&env, mdt_object_child(mo));
3110 mo->mot_cache_attr = 0;
3112 mdt_object_put(&env, mo);
3124 int mdt_check_resent_lock(struct mdt_thread_info *info,
3125 struct mdt_object *mo,
3126 struct mdt_lock_handle *lhc)
3128 /* the lock might already be gotten in ldlm_handle_enqueue() */
3129 if (unlikely(lustre_handle_is_used(&lhc->mlh_reg_lh))) {
3130 struct ptlrpc_request *req = mdt_info_req(info);
3131 struct ldlm_lock *lock;
3133 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
3134 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
3136 /* Lock is pinned by ldlm_handle_enqueue0() as it is
3137 * a resend case, however, it could be already destroyed
3138 * due to client eviction or a raced cancel RPC. */
3139 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx",
3140 lhc->mlh_reg_lh.cookie);
3144 if (!fid_res_name_eq(mdt_object_fid(mo),
3145 &lock->l_resource->lr_name)) {
3146 CWARN("%s: Although resent, but still not "
3147 "get child lock:"DFID"\n",
3148 info->mti_exp->exp_obd->obd_name,
3149 PFID(mdt_object_fid(mo)));
3150 LDLM_LOCK_PUT(lock);
3153 LDLM_LOCK_PUT(lock);
3159 static void mdt_remote_object_lock_created_cb(struct ldlm_lock *lock)
3161 mdt_object_get(NULL, lock->l_ast_data);
3164 int mdt_remote_object_lock_try(struct mdt_thread_info *mti,
3165 struct mdt_object *o, const struct lu_fid *fid,
3166 struct lustre_handle *lh, enum ldlm_mode mode,
3167 __u64 *ibits, __u64 trybits, bool cache)
3169 struct ldlm_enqueue_info *einfo = &mti->mti_remote_einfo;
3170 union ldlm_policy_data *policy = &mti->mti_policy;
3171 struct ldlm_res_id *res_id = &mti->mti_res_id;
3175 LASSERT(mdt_object_remote(o));
3177 fid_build_reg_res_name(fid, res_id);
3179 memset(einfo, 0, sizeof(*einfo));
3180 einfo->ei_type = LDLM_IBITS;
3181 einfo->ei_mode = mode;
3182 einfo->ei_cb_bl = mdt_remote_blocking_ast;
3183 einfo->ei_cb_cp = ldlm_completion_ast;
3184 einfo->ei_enq_slave = 0;
3185 einfo->ei_res_id = res_id;
3189 * if we cache lock, couple lock with mdt_object, so that object
3190 * can be easily found in lock ASTs.
3192 einfo->ei_cbdata = o;
3193 einfo->ei_cb_created = mdt_remote_object_lock_created_cb;
3196 memset(policy, 0, sizeof(*policy));
3197 policy->l_inodebits.bits = *ibits;
3198 policy->l_inodebits.try_bits = trybits;
3200 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
3203 /* Return successfully acquired bits to a caller */
3205 struct ldlm_lock *lock = ldlm_handle2lock(lh);
3208 *ibits = lock->l_policy_data.l_inodebits.bits;
3209 LDLM_LOCK_PUT(lock);
3214 int mdt_remote_object_lock(struct mdt_thread_info *mti, struct mdt_object *o,
3215 const struct lu_fid *fid, struct lustre_handle *lh,
3216 enum ldlm_mode mode, __u64 ibits, bool cache)
3218 return mdt_remote_object_lock_try(mti, o, fid, lh, mode, &ibits, 0,
3222 static int mdt_object_local_lock(struct mdt_thread_info *info,
3223 struct mdt_object *o,
3224 struct mdt_lock_handle *lh, __u64 *ibits,
3225 __u64 trybits, bool cos_incompat)
3227 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
3228 union ldlm_policy_data *policy = &info->mti_policy;
3229 struct ldlm_res_id *res_id = &info->mti_res_id;
3230 __u64 dlmflags = 0, *cookie = NULL;
3234 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3235 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3236 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
3237 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
3240 LASSERT(lh->mlh_reg_mode == LCK_PW ||
3241 lh->mlh_reg_mode == LCK_EX);
3242 dlmflags |= LDLM_FL_COS_INCOMPAT;
3243 } else if (mdt_cos_is_enabled(info->mti_mdt)) {
3244 dlmflags |= LDLM_FL_COS_ENABLED;
3247 /* Only enqueue LOOKUP lock for remote object */
3248 LASSERT(ergo(mdt_object_remote(o), *ibits == MDS_INODELOCK_LOOKUP));
3250 /* Lease lock are granted with LDLM_FL_CANCEL_ON_BLOCK */
3251 if (lh->mlh_type == MDT_REG_LOCK && lh->mlh_reg_mode == LCK_EX &&
3252 *ibits == MDS_INODELOCK_OPEN)
3253 dlmflags |= LDLM_FL_CANCEL_ON_BLOCK;
3255 if (lh->mlh_type == MDT_PDO_LOCK) {
3256 /* check for exists after object is locked */
3257 if (mdt_object_exists(o) == 0) {
3258 /* Non-existent object shouldn't have PDO lock */
3261 /* Non-dir object shouldn't have PDO lock */
3262 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
3267 fid_build_reg_res_name(mdt_object_fid(o), res_id);
3268 dlmflags |= LDLM_FL_ATOMIC_CB;
3271 cookie = &info->mti_exp->exp_handle.h_cookie;
3274 * Take PDO lock on whole directory and build correct @res_id for lock
3275 * on part of directory.
3277 if (lh->mlh_pdo_hash != 0) {
3278 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
3279 mdt_lock_pdo_mode(info, o, lh);
3280 if (lh->mlh_pdo_mode != LCK_NL) {
3282 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
3283 * is never going to be sent to client and we do not
3284 * want it slowed down due to possible cancels.
3286 policy->l_inodebits.bits =
3287 *ibits & MDS_INODELOCK_UPDATE;
3288 policy->l_inodebits.try_bits =
3289 trybits & MDS_INODELOCK_UPDATE;
3290 /* at least one of them should be set */
3291 LASSERT(policy->l_inodebits.bits |
3292 policy->l_inodebits.try_bits);
3293 rc = mdt_fid_lock(info->mti_env, ns, &lh->mlh_pdo_lh,
3294 lh->mlh_pdo_mode, policy, res_id,
3296 if (unlikely(rc != 0))
3297 GOTO(out_unlock, rc);
3301 * Finish res_id initializing by name hash marking part of
3302 * directory which is taking modification.
3304 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
3307 policy->l_inodebits.bits = *ibits;
3308 policy->l_inodebits.try_bits = trybits;
3311 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
3312 * going to be sent to client. If it is - mdt_intent_policy() path will
3313 * fix it up and turn FL_LOCAL flag off.
3315 rc = mdt_fid_lock(info->mti_env, ns, &lh->mlh_reg_lh, lh->mlh_reg_mode,
3316 policy, res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
3320 mdt_object_unlock(info, o, lh, 1);
3321 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
3322 lh->mlh_pdo_hash != 0 &&
3323 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
3324 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
3326 /* Return successfully acquired bits to a caller */
3328 struct ldlm_lock *lock = ldlm_handle2lock(&lh->mlh_reg_lh);
3331 *ibits = lock->l_policy_data.l_inodebits.bits;
3332 LDLM_LOCK_PUT(lock);
3338 mdt_object_lock_internal(struct mdt_thread_info *info, struct mdt_object *o,
3339 struct mdt_lock_handle *lh, __u64 *ibits,
3340 __u64 trybits, bool cos_incompat)
3342 struct mdt_lock_handle *local_lh = NULL;
3346 if (!mdt_object_remote(o)) {
3347 rc = mdt_object_local_lock(info, o, lh, ibits, trybits,
3352 /* XXX do not support PERM/LAYOUT/XATTR lock for remote object yet */
3353 *ibits &= ~(MDS_INODELOCK_PERM | MDS_INODELOCK_LAYOUT |
3354 MDS_INODELOCK_XATTR);
3356 /* Only enqueue LOOKUP lock for remote object */
3357 if (*ibits & MDS_INODELOCK_LOOKUP) {
3358 __u64 local = MDS_INODELOCK_LOOKUP;
3360 rc = mdt_object_local_lock(info, o, lh, &local, 0,
3368 if ((*ibits | trybits) & MDS_INODELOCK_UPDATE) {
3369 /* Sigh, PDO needs to enqueue 2 locks right now, but
3370 * enqueue RPC can only request 1 lock, to avoid extra
3371 * RPC, so it will instead enqueue EX lock for remote
3372 * object anyway XXX*/
3373 if (lh->mlh_type == MDT_PDO_LOCK &&
3374 lh->mlh_pdo_hash != 0) {
3375 CDEBUG(D_INFO, "%s: "DFID" convert PDO lock to"
3376 "EX lock.\n", mdt_obd_name(info->mti_mdt),
3377 PFID(mdt_object_fid(o)));
3378 lh->mlh_pdo_hash = 0;
3379 lh->mlh_rreg_mode = LCK_EX;
3380 lh->mlh_type = MDT_REG_LOCK;
3383 rc = mdt_remote_object_lock_try(info, o, mdt_object_fid(o),
3386 ibits, trybits, false);
3387 if (rc != ELDLM_OK) {
3388 if (local_lh != NULL)
3389 mdt_object_unlock(info, o, local_lh, rc);
3394 /* other components like LFSCK can use lockless access
3395 * and populate cache, so we better invalidate it */
3396 mo_invalidate(info->mti_env, mdt_object_child(o));
3401 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
3402 struct mdt_lock_handle *lh, __u64 ibits)
3404 return mdt_object_lock_internal(info, o, lh, &ibits, 0, false);
3407 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
3408 struct mdt_lock_handle *lh, __u64 ibits,
3411 LASSERT(lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX);
3412 return mdt_object_lock_internal(info, o, lh, &ibits, 0,
3416 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
3417 struct mdt_lock_handle *lh, __u64 *ibits,
3418 __u64 trybits, bool cos_incompat)
3420 bool trylock_only = *ibits == 0;
3423 LASSERT(!(*ibits & trybits));
3424 rc = mdt_object_lock_internal(info, o, lh, ibits, trybits,
3426 if (rc && trylock_only) { /* clear error for try ibits lock only */
3427 LASSERT(*ibits == 0);
3434 * Save a lock within request object.
3436 * Keep the lock referenced until whether client ACK or transaction
3437 * commit happens or release the lock immediately depending on input
3438 * parameters. If COS is ON, a write lock is converted to COS lock
3441 * \param info thead info object
3442 * \param h lock handle
3443 * \param mode lock mode
3444 * \param decref force immediate lock releasing
3446 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
3447 enum ldlm_mode mode, int decref)
3451 if (lustre_handle_is_used(h)) {
3452 if (decref || !info->mti_has_trans ||
3453 !(mode & (LCK_PW | LCK_EX))) {
3454 mdt_fid_unlock(h, mode);
3456 struct mdt_device *mdt = info->mti_mdt;
3457 struct ldlm_lock *lock = ldlm_handle2lock(h);
3458 struct ptlrpc_request *req = mdt_info_req(info);
3459 bool cos = mdt_cos_is_enabled(mdt);
3460 bool convert_lock = !cos && mdt_slc_is_enabled(mdt);
3462 LASSERTF(lock != NULL, "no lock for cookie %#llx\n",
3465 /* there is no request if mdt_object_unlock() is called
3466 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
3467 if (likely(req != NULL)) {
3468 LDLM_DEBUG(lock, "save lock request %p reply "
3469 "state %p transno %lld\n", req,
3470 req->rq_reply_state, req->rq_transno);
3472 ldlm_lock_mode_downgrade(lock, LCK_COS);
3475 if (req->rq_export->exp_disconnected)
3476 mdt_fid_unlock(h, mode);
3478 ptlrpc_save_lock(req, h, mode, cos,
3481 mdt_fid_unlock(h, mode);
3483 if (mdt_is_lock_sync(lock)) {
3484 CDEBUG(D_HA, "found sync-lock,"
3485 " async commit started\n");
3486 mdt_device_commit_async(info->mti_env,
3489 LDLM_LOCK_PUT(lock);
3498 * Save cross-MDT lock in uncommitted_slc_locks
3500 * Keep the lock referenced until transaction commit happens or release the lock
3501 * immediately depending on input parameters.
3503 * \param info thead info object
3504 * \param h lock handle
3505 * \param mode lock mode
3506 * \param decref force immediate lock releasing
3508 static void mdt_save_remote_lock(struct mdt_thread_info *info,
3509 struct mdt_object *o, struct lustre_handle *h,
3510 enum ldlm_mode mode, int decref)
3514 if (lustre_handle_is_used(h)) {
3515 struct ldlm_lock *lock = ldlm_handle2lock(h);
3518 (lock->l_policy_data.l_inodebits.bits &
3519 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)))
3520 mo_invalidate(info->mti_env, mdt_object_child(o));
3522 if (decref || !info->mti_has_trans ||
3523 !(mode & (LCK_PW | LCK_EX))) {
3524 ldlm_lock_decref_and_cancel(h, mode);
3525 LDLM_LOCK_PUT(lock);
3527 struct ptlrpc_request *req = mdt_info_req(info);
3529 LASSERT(req != NULL);
3530 tgt_save_slc_lock(&info->mti_mdt->mdt_lut, lock,
3532 ldlm_lock_decref(h, mode);
3541 * Unlock mdt object.
3543 * Immeditely release the regular lock and the PDO lock or save the
3544 * lock in request and keep them referenced until client ACK or
3545 * transaction commit.
3547 * \param info thread info object
3548 * \param o mdt object
3549 * \param lh mdt lock handle referencing regular and PDO locks
3550 * \param decref force immediate lock releasing
3552 * XXX o is not used and may be NULL, see hsm_cdt_request_completed().
3554 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
3555 struct mdt_lock_handle *lh, int decref)
3559 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
3560 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
3561 mdt_save_remote_lock(info, o, &lh->mlh_rreg_lh, lh->mlh_rreg_mode,
3567 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
3568 const struct lu_fid *f,
3569 struct mdt_lock_handle *lh,
3572 struct mdt_object *o;
3574 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
3578 rc = mdt_object_lock(info, o, lh, ibits);
3580 mdt_object_put(info->mti_env, o);
3587 void mdt_object_unlock_put(struct mdt_thread_info * info,
3588 struct mdt_object * o,
3589 struct mdt_lock_handle *lh,
3592 mdt_object_unlock(info, o, lh, decref);
3593 mdt_object_put(info->mti_env, o);
3597 * Generic code handling requests that have struct mdt_body passed in:
3599 * - extract mdt_body from request and save it in @info, if present;
3601 * - create lu_object, corresponding to the fid in mdt_body, and save it in
3604 * - if HAS_BODY flag is set for this request type check whether object
3605 * actually exists on storage (lu_object_exists()).
3608 static int mdt_body_unpack(struct mdt_thread_info *info,
3609 enum tgt_handler_flags flags)
3611 const struct mdt_body *body;
3612 struct mdt_object *obj;
3613 const struct lu_env *env;
3614 struct req_capsule *pill;
3618 env = info->mti_env;
3619 pill = info->mti_pill;
3621 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
3625 if (!(body->mbo_valid & OBD_MD_FLID))
3628 if (!fid_is_sane(&body->mbo_fid1)) {
3629 CERROR("Invalid fid: "DFID"\n", PFID(&body->mbo_fid1));
3633 obj = mdt_object_find(env, info->mti_mdt, &body->mbo_fid1);
3635 if ((flags & HAS_BODY) && !mdt_object_exists(obj)) {
3636 mdt_object_put(env, obj);
3639 info->mti_object = obj;
3648 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info,
3649 enum tgt_handler_flags flags)
3651 struct req_capsule *pill = info->mti_pill;
3656 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
3657 rc = mdt_body_unpack(info, flags);
3661 if (rc == 0 && (flags & HAS_REPLY)) {
3663 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
3664 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
3666 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
3667 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
3670 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
3671 * by default. If the target object has more ACL entries, then
3672 * enlarge the buffer when necessary. */
3673 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
3674 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
3675 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
3677 mdt_preset_secctx_size(info);
3679 rc = req_capsule_server_pack(pill);
3681 CWARN("%s: cannot pack response: rc = %d\n",
3682 mdt_obd_name(info->mti_mdt), rc);
3687 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
3689 lh->mlh_type = MDT_NUL_LOCK;
3690 lh->mlh_reg_lh.cookie = 0ull;
3691 lh->mlh_reg_mode = LCK_MINMODE;
3692 lh->mlh_pdo_lh.cookie = 0ull;
3693 lh->mlh_pdo_mode = LCK_MINMODE;
3694 lh->mlh_rreg_lh.cookie = 0ull;
3695 lh->mlh_rreg_mode = LCK_MINMODE;
3698 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
3700 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3701 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3705 * Initialize fields of struct mdt_thread_info. Other fields are left in
3706 * uninitialized state, because it's too expensive to zero out whole
3707 * mdt_thread_info (> 1K) on each request arrival.
3709 void mdt_thread_info_init(struct ptlrpc_request *req,
3710 struct mdt_thread_info *info)
3714 info->mti_pill = &req->rq_pill;
3717 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3718 mdt_lock_handle_init(&info->mti_lh[i]);
3720 /* mdt device: it can be NULL while CONNECT */
3721 if (req->rq_export) {
3722 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
3723 info->mti_exp = req->rq_export;
3725 info->mti_mdt = NULL;
3726 info->mti_env = req->rq_svc_thread->t_env;
3727 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
3729 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
3730 info->mti_big_buf = LU_BUF_NULL;
3731 info->mti_body = NULL;
3732 info->mti_object = NULL;
3733 info->mti_dlm_req = NULL;
3734 info->mti_has_trans = 0;
3735 info->mti_cross_ref = 0;
3736 info->mti_opdata = 0;
3737 info->mti_big_lmm_used = 0;
3738 info->mti_big_acl_used = 0;
3739 info->mti_som_valid = 0;
3741 info->mti_spec.no_create = 0;
3742 info->mti_spec.sp_rm_entry = 0;
3743 info->mti_spec.sp_permitted = 0;
3744 info->mti_spec.sp_migrate_close = 0;
3746 info->mti_spec.u.sp_ea.eadata = NULL;
3747 info->mti_spec.u.sp_ea.eadatalen = 0;
3750 void mdt_thread_info_fini(struct mdt_thread_info *info)
3754 if (info->mti_object != NULL) {
3755 mdt_object_put(info->mti_env, info->mti_object);
3756 info->mti_object = NULL;
3759 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3760 mdt_lock_handle_fini(&info->mti_lh[i]);
3761 info->mti_env = NULL;
3762 info->mti_pill = NULL;
3763 info->mti_exp = NULL;
3765 if (unlikely(info->mti_big_buf.lb_buf != NULL))
3766 lu_buf_free(&info->mti_big_buf);
3769 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
3771 struct mdt_thread_info *mti;
3773 mti = mdt_th_info(tsi->tsi_env);
3774 LASSERT(mti != NULL);
3776 mdt_thread_info_init(tgt_ses_req(tsi), mti);
3777 if (tsi->tsi_corpus != NULL) {
3778 mti->mti_object = mdt_obj(tsi->tsi_corpus);
3779 lu_object_get(tsi->tsi_corpus);
3781 mti->mti_body = tsi->tsi_mdt_body;
3782 mti->mti_dlm_req = tsi->tsi_dlm_req;
3787 static int mdt_tgt_connect(struct tgt_session_info *tsi)
3789 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_DELAY_CONDITIONAL) &&
3791 tsi2mdt_info(tsi)->mti_mdt->mdt_seq_site.ss_node_id) {
3792 set_current_state(TASK_UNINTERRUPTIBLE);
3793 schedule_timeout(cfs_time_seconds(3));
3796 return tgt_connect(tsi);
3799 static int mdt_intent_glimpse(enum ldlm_intent_flags it_opc,
3800 struct mdt_thread_info *info,
3801 struct ldlm_lock **lockp, __u64 flags)
3803 return mdt_glimpse_enqueue(info, info->mti_mdt->mdt_namespace,
3806 static int mdt_intent_brw(enum ldlm_intent_flags it_opc,
3807 struct mdt_thread_info *info,
3808 struct ldlm_lock **lockp, __u64 flags)
3810 return mdt_brw_enqueue(info, info->mti_mdt->mdt_namespace,
3814 int mdt_intent_lock_replace(struct mdt_thread_info *info,
3815 struct ldlm_lock **lockp,
3816 struct mdt_lock_handle *lh,
3817 __u64 flags, int result)
3819 struct ptlrpc_request *req = mdt_info_req(info);
3820 struct ldlm_lock *lock = *lockp;
3821 struct ldlm_lock *new_lock;
3823 /* If possible resent found a lock, @lh is set to its handle */
3824 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3826 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3827 lh->mlh_reg_lh.cookie = 0;
3831 if (new_lock == NULL && (flags & LDLM_FL_RESENT)) {
3832 /* Lock is pinned by ldlm_handle_enqueue0() as it is
3833 * a resend case, however, it could be already destroyed
3834 * due to client eviction or a raced cancel RPC. */
3835 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx\n",
3836 lh->mlh_reg_lh.cookie);
3837 lh->mlh_reg_lh.cookie = 0;
3841 LASSERTF(new_lock != NULL,
3842 "lockh %#llx flags %#llx : rc = %d\n",
3843 lh->mlh_reg_lh.cookie, flags, result);
3846 * If we've already given this lock to a client once, then we should
3847 * have no readers or writers. Otherwise, we should have one reader
3848 * _or_ writer ref (which will be zeroed below) before returning the
3851 if (new_lock->l_export == req->rq_export) {
3852 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3854 LASSERT(new_lock->l_export == NULL);
3855 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3860 if (new_lock->l_export == req->rq_export) {
3862 * Already gave this to the client, which means that we
3863 * reconstructed a reply.
3865 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3868 LDLM_LOCK_RELEASE(new_lock);
3869 lh->mlh_reg_lh.cookie = 0;
3870 RETURN(ELDLM_LOCK_REPLACED);
3874 * Fixup the lock to be given to the client.
3876 lock_res_and_lock(new_lock);
3877 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3878 * possible blocking AST. */
3879 while (new_lock->l_readers > 0) {
3880 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3881 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3882 new_lock->l_readers--;
3884 while (new_lock->l_writers > 0) {
3885 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3886 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3887 new_lock->l_writers--;
3890 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3891 new_lock->l_blocking_ast = lock->l_blocking_ast;
3892 new_lock->l_completion_ast = lock->l_completion_ast;
3893 if (ldlm_has_dom(new_lock))
3894 new_lock->l_glimpse_ast = ldlm_server_glimpse_ast;
3895 new_lock->l_remote_handle = lock->l_remote_handle;
3896 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3898 unlock_res_and_lock(new_lock);
3900 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3901 &new_lock->l_remote_handle,
3902 &new_lock->l_exp_hash);
3904 LDLM_LOCK_RELEASE(new_lock);
3905 lh->mlh_reg_lh.cookie = 0;
3907 RETURN(ELDLM_LOCK_REPLACED);
3910 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3911 struct ldlm_lock *new_lock,
3912 struct mdt_lock_handle *lh, __u64 flags)
3914 struct ptlrpc_request *req = mdt_info_req(info);
3915 struct ldlm_request *dlmreq;
3917 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3920 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3922 /* Check if this is a resend case (MSG_RESENT is set on RPC) and a
3923 * lock was found by ldlm_handle_enqueue(); if so @lh must be
3925 if (flags & LDLM_FL_RESENT) {
3926 lh->mlh_reg_lh.cookie = new_lock->l_handle.h_cookie;
3927 lh->mlh_reg_mode = new_lock->l_granted_mode;
3929 LDLM_DEBUG(new_lock, "Restoring lock cookie");
3930 DEBUG_REQ(D_DLMTRACE, req, "restoring lock cookie %#llx",
3931 lh->mlh_reg_lh.cookie);
3936 * If the xid matches, then we know this is a resent request, and allow
3937 * it. (It's probably an OPEN, for which we don't send a lock.
3939 if (req_can_reconstruct(req, NULL) == 1)
3943 * This remote handle isn't enqueued, so we never received or processed
3944 * this request. Clear MSG_RESENT, because it can be handled like any
3945 * normal request now.
3947 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3949 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle %#llx",
3950 dlmreq->lock_handle[0].cookie);
3953 static int mdt_intent_getxattr(enum ldlm_intent_flags it_opc,
3954 struct mdt_thread_info *info,
3955 struct ldlm_lock **lockp,
3958 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3959 struct ldlm_reply *ldlm_rep = NULL;
3964 * Initialize lhc->mlh_reg_lh either from a previously granted lock
3965 * (for the resend case) or a new lock. Below we will use it to
3966 * replace the original lock.
3968 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3969 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3970 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
3971 rc = mdt_object_lock(info, info->mti_object, lhc,
3972 MDS_INODELOCK_XATTR);
3977 rc = mdt_getxattr(info);
3979 if (mdt_info_req(info)->rq_repmsg != NULL)
3980 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3982 if (ldlm_rep == NULL ||
3983 OBD_FAIL_CHECK(OBD_FAIL_MDS_XATTR_REP)) {
3984 mdt_object_unlock(info, info->mti_object, lhc, 1);
3988 RETURN(err_serious(-EFAULT));
3991 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3993 /* This is left for interop instead of adding a new interop flag.
3995 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(3, 0, 0, 0)
3996 if (ldlm_rep->lock_policy_res2) {
3997 mdt_object_unlock(info, info->mti_object, lhc, 1);
3998 RETURN(ELDLM_LOCK_ABORTED);
4002 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4006 static int mdt_intent_getattr(enum ldlm_intent_flags it_opc,
4007 struct mdt_thread_info *info,
4008 struct ldlm_lock **lockp,
4011 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4013 struct ldlm_reply *ldlm_rep;
4014 struct mdt_body *reqbody;
4015 struct mdt_body *repbody;
4019 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
4022 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
4025 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
4026 repbody->mbo_eadatasize = 0;
4027 repbody->mbo_aclsize = 0;
4031 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
4034 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
4038 CERROR("%s: unsupported intent %#x\n",
4039 mdt_obd_name(info->mti_mdt), (unsigned int)it_opc);
4040 GOTO(out_shrink, rc = -EINVAL);
4043 rc = mdt_init_ucred_intent_getattr(info, reqbody);
4045 GOTO(out_shrink, rc);
4047 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4048 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
4050 /* Get lock from request for possible resent case. */
4051 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4053 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
4054 ldlm_rep->lock_policy_res2 = clear_serious(rc);
4056 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
4057 ldlm_rep->lock_policy_res2 = 0;
4058 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
4059 ldlm_rep->lock_policy_res2) {
4060 lhc->mlh_reg_lh.cookie = 0ull;
4061 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
4064 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4067 mdt_exit_ucred(info);
4069 mdt_client_compatibility(info);
4070 rc2 = mdt_fix_reply(info);
4076 static int mdt_intent_layout(enum ldlm_intent_flags it_opc,
4077 struct mdt_thread_info *info,
4078 struct ldlm_lock **lockp,
4081 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4082 struct md_layout_change layout = { .mlc_opc = MD_LAYOUT_NOP };
4083 struct layout_intent *intent;
4084 struct ldlm_reply *ldlm_rep;
4085 struct lu_fid *fid = &info->mti_tmp_fid2;
4086 struct mdt_object *obj = NULL;
4087 int layout_size = 0;
4088 struct lu_buf *buf = &layout.mlc_buf;
4093 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
4095 intent = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
4099 CDEBUG(D_INFO, DFID "got layout change request from client: "
4100 "opc:%u flags:%#x extent "DEXT"\n",
4101 PFID(fid), intent->li_opc, intent->li_flags,
4102 PEXT(&intent->li_extent));
4104 switch (intent->li_opc) {
4105 case LAYOUT_INTENT_TRUNC:
4106 case LAYOUT_INTENT_WRITE:
4107 layout.mlc_opc = MD_LAYOUT_WRITE;
4108 layout.mlc_intent = intent;
4110 case LAYOUT_INTENT_ACCESS:
4112 case LAYOUT_INTENT_READ:
4113 case LAYOUT_INTENT_GLIMPSE:
4114 case LAYOUT_INTENT_RELEASE:
4115 case LAYOUT_INTENT_RESTORE:
4116 CERROR("%s: Unsupported layout intent opc %d\n",
4117 mdt_obd_name(info->mti_mdt), intent->li_opc);
4120 CERROR("%s: Unknown layout intent opc %d\n",
4121 mdt_obd_name(info->mti_mdt), intent->li_opc);
4125 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
4127 RETURN(PTR_ERR(obj));
4129 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
4130 /* if layout is going to be changed don't use the current EA
4131 * size but the maximum one. That buffer will be shrinked
4132 * to the actual size in req_capsule_shrink() before reply.
4134 if (layout.mlc_opc == MD_LAYOUT_WRITE) {
4135 layout_size = info->mti_mdt->mdt_max_mdsize;
4137 layout_size = mdt_attr_get_eabuf_size(info, obj);
4138 if (layout_size < 0)
4139 GOTO(out, rc = layout_size);
4141 if (layout_size > info->mti_mdt->mdt_max_mdsize)
4142 info->mti_mdt->mdt_max_mdsize = layout_size;
4144 CDEBUG(D_INFO, "%s: layout_size %d\n",
4145 mdt_obd_name(info->mti_mdt), layout_size);
4149 * set reply buffer size, so that ldlm_handle_enqueue0()->
4150 * ldlm_lvbo_fill() will fill the reply buffer with lovea.
4152 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
4154 rc = req_capsule_server_pack(info->mti_pill);
4158 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4160 GOTO(out, rc = -EPROTO);
4162 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
4164 /* take lock in ldlm_lock_enqueue() for LAYOUT_INTENT_ACCESS */
4165 if (layout.mlc_opc == MD_LAYOUT_NOP)
4168 rc = mdt_check_resent(info, mdt_reconstruct_generic, lhc);
4172 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
4173 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
4179 if (unlikely(req_is_replay(mdt_info_req(info)))) {
4180 buf->lb_buf = req_capsule_client_get(info->mti_pill,
4182 buf->lb_len = req_capsule_get_size(info->mti_pill,
4183 &RMF_EADATA, RCL_CLIENT);
4185 * If it's a replay of layout write intent RPC, the client has
4186 * saved the extended lovea when it get reply then.
4188 if (buf->lb_len > 0)
4189 mdt_fix_lov_magic(info, buf->lb_buf);
4192 /* Get lock from request for possible resent case. */
4193 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4194 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
4197 * Instantiate some layout components, if @buf contains lovea, then it's
4198 * a replay of the layout intent write RPC.
4200 rc = mdt_layout_change(info, obj, lhc, &layout);
4201 ldlm_rep->lock_policy_res2 = clear_serious(rc);
4203 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
4204 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4205 if (rc == ELDLM_LOCK_REPLACED &&
4206 (*lockp)->l_granted_mode == LCK_EX)
4207 ldlm_lock_mode_downgrade(*lockp, LCK_CR);
4212 mdt_object_put(info->mti_env, obj);
4216 static int mdt_intent_open(enum ldlm_intent_flags it_opc,
4217 struct mdt_thread_info *info,
4218 struct ldlm_lock **lockp,
4221 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4222 struct ldlm_reply *rep = NULL;
4226 static const struct req_format *intent_fmts[REINT_MAX] = {
4227 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
4228 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
4233 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
4237 /* Get lock from request for possible resent case. */
4238 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4240 rc = mdt_reint_internal(info, lhc, opc);
4242 /* Check whether the reply has been packed successfully. */
4243 if (mdt_info_req(info)->rq_repmsg != NULL)
4244 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4249 RETURN(err_serious(-EFAULT));
4252 /* MDC expects this in any case */
4254 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
4256 /* the open lock or the lock for cross-ref object should be
4257 * returned to the client */
4258 if (lustre_handle_is_used(&lhc->mlh_reg_lh) &&
4259 (rc == 0 || rc == -MDT_EREMOTE_OPEN)) {
4260 rep->lock_policy_res2 = 0;
4261 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4265 rep->lock_policy_res2 = clear_serious(rc);
4267 if (rep->lock_policy_res2 == -ENOENT &&
4268 mdt_get_disposition(rep, DISP_LOOKUP_NEG) &&
4269 !mdt_get_disposition(rep, DISP_OPEN_CREATE))
4270 rep->lock_policy_res2 = 0;
4272 lhc->mlh_reg_lh.cookie = 0ull;
4273 if (rc == -ENOTCONN || rc == -ENODEV ||
4274 rc == -EOVERFLOW) { /**< if VBR failure then return error */
4276 * If it is the disconnect error (ENODEV & ENOCONN), the error
4277 * will be returned by rq_status, and client at ptlrpc layer
4278 * will detect this, then disconnect, reconnect the import
4279 * immediately, instead of impacting the following the rpc.
4284 * For other cases, the error will be returned by intent, and client
4285 * will retrieve the result from intent.
4287 RETURN(ELDLM_LOCK_ABORTED);
4290 static int mdt_intent_opc(enum ldlm_intent_flags it_opc,
4291 struct mdt_thread_info *info,
4292 struct ldlm_lock **lockp,
4293 u64 flags /* LDLM_FL_* */)
4295 struct req_capsule *pill = info->mti_pill;
4296 struct ptlrpc_request *req = mdt_info_req(info);
4297 const struct req_format *it_format;
4298 int (*it_handler)(enum ldlm_intent_flags,
4299 struct mdt_thread_info *,
4300 struct ldlm_lock **,
4302 enum tgt_handler_flags it_handler_flags = 0;
4303 struct ldlm_reply *rep;
4304 bool check_mdt_object = false;
4310 case IT_OPEN|IT_CREAT:
4312 * OCREAT is not a IS_MUTABLE request since the file may
4313 * already exist. We do the extra check of
4314 * OBD_CONNECT_RDONLY in mdt_reint_open() when we
4315 * really need to create the object.
4317 it_format = &RQF_LDLM_INTENT;
4318 it_handler = &mdt_intent_open;
4321 check_mdt_object = true;
4323 it_format = &RQF_LDLM_INTENT_GETATTR;
4324 it_handler = &mdt_intent_getattr;
4325 it_handler_flags = HAS_REPLY;
4328 check_mdt_object = true;
4329 it_format = &RQF_LDLM_INTENT_GETXATTR;
4330 it_handler = &mdt_intent_getxattr;
4331 it_handler_flags = HAS_BODY;
4334 it_format = &RQF_LDLM_INTENT_LAYOUT;
4335 it_handler = &mdt_intent_layout;
4338 it_format = &RQF_LDLM_INTENT;
4339 it_handler = &mdt_intent_glimpse;
4342 it_format = &RQF_LDLM_INTENT;
4343 it_handler = &mdt_intent_brw;
4345 case IT_QUOTA_DQACQ:
4346 case IT_QUOTA_CONN: {
4347 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
4350 RETURN(-EOPNOTSUPP);
4352 if (mdt_rdonly(req->rq_export))
4355 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
4356 /* pass the request to quota master */
4357 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
4358 mdt_info_req(info), lockp,
4363 CERROR("%s: unknown intent code %#x\n",
4364 mdt_obd_name(info->mti_mdt), it_opc);
4368 req_capsule_extend(pill, it_format);
4370 rc = mdt_unpack_req_pack_rep(info, it_handler_flags);
4374 if (unlikely(info->mti_object == NULL && check_mdt_object))
4377 if (it_handler_flags & IS_MUTABLE && mdt_rdonly(req->rq_export))
4380 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_INTENT_DELAY, 10);
4382 /* execute policy */
4383 rc = (*it_handler)(it_opc, info, lockp, flags);
4385 /* Check whether the reply has been packed successfully. */
4386 if (req->rq_repmsg != NULL) {
4387 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4388 rep->lock_policy_res2 =
4389 ptlrpc_status_hton(rep->lock_policy_res2);
4395 static void mdt_ptlrpc_stats_update(struct ptlrpc_request *req,
4396 enum ldlm_intent_flags it_opc)
4398 struct lprocfs_stats *srv_stats = ptlrpc_req2svc(req)->srv_stats;
4400 /* update stats when IT code is known */
4401 if (srv_stats != NULL)
4402 lprocfs_counter_incr(srv_stats,
4403 PTLRPC_LAST_CNTR + (it_opc == IT_GLIMPSE ?
4404 LDLM_GLIMPSE_ENQUEUE : LDLM_IBITS_ENQUEUE));
4407 static int mdt_intent_policy(const struct lu_env *env,
4408 struct ldlm_namespace *ns,
4409 struct ldlm_lock **lockp,
4411 enum ldlm_mode mode,
4412 __u64 flags, void *data)
4414 struct tgt_session_info *tsi;
4415 struct mdt_thread_info *info;
4416 struct ptlrpc_request *req = req_cookie;
4417 struct ldlm_intent *it;
4418 struct req_capsule *pill;
4419 const struct ldlm_lock_desc *ldesc;
4424 LASSERT(req != NULL);
4426 tsi = tgt_ses_info(env);
4428 info = tsi2mdt_info(tsi);
4429 LASSERT(info != NULL);
4430 pill = info->mti_pill;
4431 LASSERT(pill->rc_req == req);
4432 ldesc = &info->mti_dlm_req->lock_desc;
4434 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
4435 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
4436 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
4438 mdt_ptlrpc_stats_update(req, it->opc);
4439 rc = mdt_intent_opc(it->opc, info, lockp, flags);
4443 /* Lock without inodebits makes no sense and will oops
4444 * later in ldlm. Let's check it now to see if we have
4445 * ibits corrupted somewhere in mdt_intent_opc().
4446 * The case for client miss to set ibits has been
4447 * processed by others. */
4448 LASSERT(ergo(ldesc->l_resource.lr_type == LDLM_IBITS,
4449 ldesc->l_policy_data.l_inodebits.bits != 0));
4451 rc = err_serious(-EFAULT);
4454 /* No intent was provided */
4455 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
4456 rc = req_capsule_server_pack(pill);
4458 rc = err_serious(rc);
4460 mdt_thread_info_fini(info);
4464 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
4466 struct seq_server_site *ss = mdt_seq_site(mdt);
4468 if (ss->ss_node_id == 0)
4471 if (ss->ss_client_seq != NULL) {
4472 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
4473 ss->ss_client_seq->lcs_exp = NULL;
4476 if (ss->ss_server_fld != NULL) {
4477 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
4478 ss->ss_server_fld->lsf_control_exp = NULL;
4482 static void mdt_seq_fini_cli(struct mdt_device *mdt)
4484 struct seq_server_site *ss = mdt_seq_site(mdt);
4489 if (ss->ss_server_seq != NULL)
4490 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
4493 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
4495 mdt_seq_fini_cli(mdt);
4496 mdt_deregister_seq_exp(mdt);
4498 return seq_site_fini(env, mdt_seq_site(mdt));
4502 * It will retrieve its FLDB entries from MDT0, and it only happens
4503 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
4504 * and it needs to refresh FLDB from the MDT0.
4506 static int mdt_register_lwp_callback(void *data)
4509 struct mdt_device *mdt = data;
4510 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
4514 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
4516 rc = lu_env_init(&env, LCT_MD_THREAD);
4518 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
4522 /* Allocate new sequence now to avoid creating local transaction
4523 * in the normal transaction process */
4524 rc = seq_server_check_and_alloc_super(&env,
4525 mdt_seq_site(mdt)->ss_server_seq);
4530 rc = fld_update_from_controller(&env, fld);
4532 CERROR("%s: cannot update controller: rc = %d\n",
4533 mdt_obd_name(mdt), rc);
4542 static int mdt_register_seq_exp(struct mdt_device *mdt)
4544 struct seq_server_site *ss = mdt_seq_site(mdt);
4545 char *lwp_name = NULL;
4548 if (ss->ss_node_id == 0)
4551 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
4552 if (lwp_name == NULL)
4553 GOTO(out_free, rc = -ENOMEM);
4555 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
4559 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
4564 rc = lustre_register_lwp_item(lwp_name,
4565 &ss->ss_server_fld->lsf_control_exp,
4566 mdt_register_lwp_callback, mdt);
4568 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
4569 ss->ss_client_seq->lcs_exp = NULL;
4573 if (lwp_name != NULL)
4574 OBD_FREE(lwp_name, MAX_OBD_NAME);
4580 * Init client sequence manager which is used by local MDS to talk to sequence
4581 * controller on remote node.
4583 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
4585 struct seq_server_site *ss = mdt_seq_site(mdt);
4590 /* check if this is adding the first MDC and controller is not yet
4592 OBD_ALLOC_PTR(ss->ss_client_seq);
4593 if (ss->ss_client_seq == NULL)
4596 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
4597 if (prefix == NULL) {
4598 OBD_FREE_PTR(ss->ss_client_seq);
4599 ss->ss_client_seq = NULL;
4603 /* Note: seq_client_fini will be called in seq_site_fini */
4604 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
4605 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
4606 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
4608 OBD_FREE(prefix, MAX_OBD_NAME + 5);
4610 OBD_FREE_PTR(ss->ss_client_seq);
4611 ss->ss_client_seq = NULL;
4615 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
4620 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
4622 struct seq_server_site *ss;
4626 ss = mdt_seq_site(mdt);
4627 /* init sequence controller server(MDT0) */
4628 if (ss->ss_node_id == 0) {
4629 OBD_ALLOC_PTR(ss->ss_control_seq);
4630 if (ss->ss_control_seq == NULL)
4633 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
4634 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
4637 GOTO(out_seq_fini, rc);
4640 /* Init normal sequence server */
4641 OBD_ALLOC_PTR(ss->ss_server_seq);
4642 if (ss->ss_server_seq == NULL)
4643 GOTO(out_seq_fini, rc = -ENOMEM);
4645 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
4646 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
4648 GOTO(out_seq_fini, rc);
4650 /* init seq client for seq server to talk to seq controller(MDT0) */
4651 rc = mdt_seq_init_cli(env, mdt);
4653 GOTO(out_seq_fini, rc);
4655 if (ss->ss_node_id != 0)
4656 /* register controller export through lwp */
4657 rc = mdt_register_seq_exp(mdt);
4662 mdt_seq_fini(env, mdt);
4670 static int mdt_fld_fini(const struct lu_env *env,
4671 struct mdt_device *m)
4673 struct seq_server_site *ss = mdt_seq_site(m);
4676 if (ss && ss->ss_server_fld) {
4677 fld_server_fini(env, ss->ss_server_fld);
4678 OBD_FREE_PTR(ss->ss_server_fld);
4679 ss->ss_server_fld = NULL;
4685 static int mdt_fld_init(const struct lu_env *env,
4687 struct mdt_device *m)
4689 struct seq_server_site *ss;
4693 ss = mdt_seq_site(m);
4695 OBD_ALLOC_PTR(ss->ss_server_fld);
4696 if (ss->ss_server_fld == NULL)
4697 RETURN(rc = -ENOMEM);
4699 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
4702 OBD_FREE_PTR(ss->ss_server_fld);
4703 ss->ss_server_fld = NULL;
4710 static void mdt_stack_pre_fini(const struct lu_env *env,
4711 struct mdt_device *m, struct lu_device *top)
4713 struct lustre_cfg_bufs *bufs;
4714 struct lustre_cfg *lcfg;
4715 struct mdt_thread_info *info;
4720 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4721 LASSERT(info != NULL);
4723 bufs = &info->mti_u.bufs;
4725 LASSERT(m->mdt_child_exp);
4726 LASSERT(m->mdt_child_exp->exp_obd);
4728 /* process cleanup, pass mdt obd name to get obd umount flags */
4729 /* XXX: this is needed because all layers are referenced by
4730 * objects (some of them are pinned by osd, for example *
4731 * the proper solution should be a model where object used
4732 * by osd only doesn't have mdt/mdd slices -bzzz */
4733 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
4734 lustre_cfg_bufs_set_string(bufs, 1, NULL);
4735 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4738 lustre_cfg_init(lcfg, LCFG_PRE_CLEANUP, bufs);
4740 top->ld_ops->ldo_process_config(env, top, lcfg);
4741 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4745 static void mdt_stack_fini(const struct lu_env *env,
4746 struct mdt_device *m, struct lu_device *top)
4748 struct obd_device *obd = mdt2obd_dev(m);
4749 struct lustre_cfg_bufs *bufs;
4750 struct lustre_cfg *lcfg;
4751 struct mdt_thread_info *info;
4755 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4756 LASSERT(info != NULL);
4758 lu_dev_del_linkage(top->ld_site, top);
4760 lu_site_purge(env, top->ld_site, -1);
4762 bufs = &info->mti_u.bufs;
4763 /* process cleanup, pass mdt obd name to get obd umount flags */
4764 /* another purpose is to let all layers to release their objects */
4765 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
4770 lustre_cfg_bufs_set_string(bufs, 1, flags);
4771 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4774 lustre_cfg_init(lcfg, LCFG_CLEANUP, bufs);
4777 top->ld_ops->ldo_process_config(env, top, lcfg);
4778 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4780 lu_site_purge(env, top->ld_site, -1);
4782 m->mdt_child = NULL;
4783 m->mdt_bottom = NULL;
4785 obd_disconnect(m->mdt_child_exp);
4786 m->mdt_child_exp = NULL;
4788 obd_disconnect(m->mdt_bottom_exp);
4789 m->mdt_child_exp = NULL;
4792 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
4793 const char *next, struct obd_export **exp)
4795 struct obd_connect_data *data = NULL;
4796 struct obd_device *obd;
4800 OBD_ALLOC_PTR(data);
4802 GOTO(out, rc = -ENOMEM);
4804 obd = class_name2obd(next);
4806 CERROR("%s: can't locate next device: %s\n",
4807 mdt_obd_name(m), next);
4808 GOTO(out, rc = -ENOTCONN);
4811 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4812 data->ocd_version = LUSTRE_VERSION_CODE;
4814 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
4816 CERROR("%s: cannot connect to next dev %s (%d)\n",
4817 mdt_obd_name(m), next, rc);
4827 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
4828 struct lustre_cfg *cfg)
4830 char *dev = lustre_cfg_string(cfg, 0);
4831 int rc, name_size, uuid_size;
4832 char *name, *uuid, *p;
4833 struct lustre_cfg_bufs *bufs;
4834 struct lustre_cfg *lcfg;
4835 struct obd_device *obd;
4836 struct lustre_profile *lprof;
4837 struct lu_site *site;
4840 /* in 1.8 we had the only device in the stack - MDS.
4841 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
4842 * in 2.3 OSD is instantiated by obd_mount.c, so we need
4843 * to generate names and setup MDT, MDD. MDT will be using
4844 * generated name to connect to MDD. for MDD the next device
4845 * will be LOD with name taken from so called "profile" which
4846 * is generated by mount_option line
4848 * 1.8 MGS generates config. commands like this:
4849 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
4850 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
4851 * 2.0 MGS generates config. commands like this:
4852 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
4853 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4854 * 3:lustre-MDT0000-mdtlov 4:f
4856 * we generate MDD name from MDT one, just replacing T with D
4858 * after all the preparations, the logical equivalent will be
4859 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
4860 * 3:lustre-MDT0000-mdtlov 4:f
4861 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4862 * 3:lustre-MDD0000 4:f
4864 * notice we build the stack from down to top: MDD first, then MDT */
4866 name_size = MAX_OBD_NAME;
4867 uuid_size = MAX_OBD_NAME;
4869 OBD_ALLOC(name, name_size);
4870 OBD_ALLOC(uuid, uuid_size);
4871 if (name == NULL || uuid == NULL)
4872 GOTO(cleanup_mem, rc = -ENOMEM);
4874 OBD_ALLOC_PTR(bufs);
4876 GOTO(cleanup_mem, rc = -ENOMEM);
4879 p = strstr(name, "-MDT");
4881 GOTO(free_bufs, rc = -ENOMEM);
4884 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
4886 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4887 if (lprof == NULL || lprof->lp_dt == NULL) {
4888 CERROR("can't find the profile: %s\n",
4889 lustre_cfg_string(cfg, 0));
4890 GOTO(free_bufs, rc = -EINVAL);
4893 lustre_cfg_bufs_reset(bufs, name);
4894 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
4895 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4896 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4898 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4900 GOTO(put_profile, rc = -ENOMEM);
4901 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
4903 rc = class_attach(lcfg);
4905 GOTO(lcfg_cleanup, rc);
4907 obd = class_name2obd(name);
4909 CERROR("Can not find obd %s (%s in config)\n",
4910 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
4911 GOTO(lcfg_cleanup, rc = -EINVAL);
4914 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4916 lustre_cfg_bufs_reset(bufs, name);
4917 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4918 lustre_cfg_bufs_set_string(bufs, 2, dev);
4919 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4921 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4923 GOTO(class_detach, rc = -ENOMEM);
4924 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
4926 rc = class_setup(obd, lcfg);
4928 GOTO(class_detach, rc);
4930 /* connect to MDD we just setup */
4931 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
4933 GOTO(class_detach, rc);
4935 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
4937 LASSERT(mdt_lu_site(mdt) == NULL);
4938 mdt->mdt_lu_dev.ld_site = site;
4939 site->ls_top_dev = &mdt->mdt_lu_dev;
4940 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
4942 /* now connect to bottom OSD */
4943 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
4944 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
4946 GOTO(class_detach, rc);
4948 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
4950 rc = lu_env_refill((struct lu_env *)env);
4952 CERROR("Failure to refill session: '%d'\n", rc);
4954 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
4959 class_detach(obd, lcfg);
4961 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4963 class_put_profile(lprof);
4968 OBD_FREE(name, name_size);
4970 OBD_FREE(uuid, uuid_size);
4974 /* setup quota master target on MDT0 */
4975 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
4976 struct lustre_cfg *cfg)
4978 struct obd_device *obd;
4979 char *dev = lustre_cfg_string(cfg, 0);
4980 char *qmtname, *uuid, *p;
4981 struct lustre_cfg_bufs *bufs;
4982 struct lustre_cfg *lcfg;
4983 struct lustre_profile *lprof;
4984 struct obd_connect_data *data;
4988 LASSERT(mdt->mdt_qmt_exp == NULL);
4989 LASSERT(mdt->mdt_qmt_dev == NULL);
4991 /* quota master is on MDT0 only for now */
4992 if (mdt->mdt_seq_site.ss_node_id != 0)
4995 /* MGS generates config commands which look as follows:
4996 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4997 * 3:lustre-MDT0000-mdtlov 4:f
4999 * We generate the QMT name from the MDT one, just replacing MD with QM
5000 * after all the preparations, the logical equivalent will be:
5001 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
5002 * 3:lustre-MDT0000-osd 4:f */
5003 OBD_ALLOC(qmtname, MAX_OBD_NAME);
5004 OBD_ALLOC(uuid, UUID_MAX);
5005 OBD_ALLOC_PTR(bufs);
5006 OBD_ALLOC_PTR(data);
5007 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
5008 GOTO(cleanup_mem, rc = -ENOMEM);
5010 strcpy(qmtname, dev);
5011 p = strstr(qmtname, "-MDT");
5013 GOTO(cleanup_mem, rc = -ENOMEM);
5014 /* replace MD with QM */
5018 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
5020 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
5021 if (lprof == NULL || lprof->lp_dt == NULL) {
5022 CERROR("can't find profile for %s\n",
5023 lustre_cfg_string(cfg, 0));
5024 GOTO(cleanup_mem, rc = -EINVAL);
5027 lustre_cfg_bufs_reset(bufs, qmtname);
5028 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
5029 lustre_cfg_bufs_set_string(bufs, 2, uuid);
5030 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
5032 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5034 GOTO(put_profile, rc = -ENOMEM);
5035 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
5037 rc = class_attach(lcfg);
5039 GOTO(lcfg_cleanup, rc);
5041 obd = class_name2obd(qmtname);
5043 CERROR("Can not find obd %s (%s in config)\n", qmtname,
5044 lustre_cfg_string(cfg, 0));
5045 GOTO(lcfg_cleanup, rc = -EINVAL);
5048 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5050 lustre_cfg_bufs_reset(bufs, qmtname);
5051 lustre_cfg_bufs_set_string(bufs, 1, uuid);
5052 lustre_cfg_bufs_set_string(bufs, 2, dev);
5054 /* for quota, the next device should be the OSD device */
5055 lustre_cfg_bufs_set_string(bufs, 3,
5056 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
5058 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5060 GOTO(class_detach, rc = -ENOMEM);
5061 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
5063 rc = class_setup(obd, lcfg);
5065 GOTO(class_detach, rc);
5067 mdt->mdt_qmt_dev = obd->obd_lu_dev;
5069 /* configure local quota objects */
5070 if (OBD_FAIL_CHECK(OBD_FAIL_QUOTA_INIT))
5073 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
5077 GOTO(class_cleanup, rc);
5079 /* connect to quota master target */
5080 data->ocd_connect_flags = OBD_CONNECT_VERSION;
5081 data->ocd_version = LUSTRE_VERSION_CODE;
5082 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
5085 CERROR("cannot connect to quota master device %s (%d)\n",
5087 GOTO(class_cleanup, rc);
5093 class_manual_cleanup(obd);
5094 mdt->mdt_qmt_dev = NULL;
5095 GOTO(lcfg_cleanup, rc);
5099 class_detach(obd, lcfg);
5101 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5103 class_put_profile(lprof);
5108 OBD_FREE(qmtname, MAX_OBD_NAME);
5110 OBD_FREE(uuid, UUID_MAX);
5116 /* Shutdown quota master target associated with mdt */
5117 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
5121 if (mdt->mdt_qmt_exp == NULL)
5123 LASSERT(mdt->mdt_qmt_dev != NULL);
5125 /* the qmt automatically shuts down when the mdt disconnects */
5126 obd_disconnect(mdt->mdt_qmt_exp);
5127 mdt->mdt_qmt_exp = NULL;
5128 mdt->mdt_qmt_dev = NULL;
5132 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
5133 * for now. This will be removed along with converting rest of MDT code
5134 * to use tgt_session_info */
5135 static int mdt_tgt_getxattr(struct tgt_session_info *tsi)
5137 struct mdt_thread_info *info = tsi2mdt_info(tsi);
5140 if (unlikely(info->mti_object == NULL))
5143 rc = mdt_getxattr(info);
5145 mdt_thread_info_fini(info);
5149 #define OBD_FAIL_OST_READ_NET OBD_FAIL_OST_BRW_NET
5150 #define OBD_FAIL_OST_WRITE_NET OBD_FAIL_OST_BRW_NET
5151 #define OST_BRW_READ OST_READ
5152 #define OST_BRW_WRITE OST_WRITE
5154 static struct tgt_handler mdt_tgt_handlers[] = {
5155 TGT_RPC_HANDLER(MDS_FIRST_OPC,
5156 0, MDS_CONNECT, mdt_tgt_connect,
5157 &RQF_CONNECT, LUSTRE_OBD_VERSION),
5158 TGT_RPC_HANDLER(MDS_FIRST_OPC,
5159 0, MDS_DISCONNECT, tgt_disconnect,
5160 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
5161 TGT_RPC_HANDLER(MDS_FIRST_OPC,
5162 HAS_REPLY, MDS_SET_INFO, mdt_set_info,
5163 &RQF_OBD_SET_INFO, LUSTRE_MDS_VERSION),
5164 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
5165 TGT_MDT_HDL(HAS_REPLY, MDS_GET_ROOT, mdt_get_root),
5166 TGT_MDT_HDL(HAS_BODY, MDS_GETATTR, mdt_getattr),
5167 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_GETATTR_NAME,
5169 TGT_MDT_HDL(HAS_BODY, MDS_GETXATTR, mdt_tgt_getxattr),
5170 TGT_MDT_HDL(HAS_REPLY, MDS_STATFS, mdt_statfs),
5171 TGT_MDT_HDL(IS_MUTABLE, MDS_REINT, mdt_reint),
5172 TGT_MDT_HDL(HAS_BODY, MDS_CLOSE, mdt_close),
5173 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_READPAGE, mdt_readpage),
5174 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_SYNC, mdt_sync),
5175 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
5176 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_PROGRESS,
5178 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_CT_REGISTER,
5179 mdt_hsm_ct_register),
5180 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_CT_UNREGISTER,
5181 mdt_hsm_ct_unregister),
5182 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_STATE_GET,
5184 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_STATE_SET,
5186 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_ACTION, mdt_hsm_action),
5187 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_REQUEST,
5189 TGT_MDT_HDL(HAS_KEY | HAS_BODY | HAS_REPLY | IS_MUTABLE,
5192 TGT_MDT_HDL(IS_MUTABLE, MDS_RMFID, mdt_rmfid),
5195 static struct tgt_handler mdt_io_ops[] = {
5196 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY, OST_BRW_READ, tgt_brw_read,
5198 TGT_OST_HDL_HP(HAS_BODY | IS_MUTABLE, OST_BRW_WRITE, tgt_brw_write,
5200 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY | IS_MUTABLE,
5201 OST_PUNCH, mdt_punch_hdl,
5203 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_SYNC, mdt_data_sync),
5206 static struct tgt_handler mdt_sec_ctx_ops[] = {
5207 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
5208 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
5209 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
5212 static struct tgt_handler mdt_quota_ops[] = {
5213 TGT_QUOTA_HDL(HAS_REPLY, QUOTA_DQACQ, mdt_quota_dqacq),
5216 static struct tgt_opc_slice mdt_common_slice[] = {
5218 .tos_opc_start = MDS_FIRST_OPC,
5219 .tos_opc_end = MDS_LAST_OPC,
5220 .tos_hs = mdt_tgt_handlers
5223 .tos_opc_start = OBD_FIRST_OPC,
5224 .tos_opc_end = OBD_LAST_OPC,
5225 .tos_hs = tgt_obd_handlers
5228 .tos_opc_start = LDLM_FIRST_OPC,
5229 .tos_opc_end = LDLM_LAST_OPC,
5230 .tos_hs = tgt_dlm_handlers
5233 .tos_opc_start = SEC_FIRST_OPC,
5234 .tos_opc_end = SEC_LAST_OPC,
5235 .tos_hs = mdt_sec_ctx_ops
5238 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
5239 .tos_opc_end = OUT_UPDATE_LAST_OPC,
5240 .tos_hs = tgt_out_handlers
5243 .tos_opc_start = FLD_FIRST_OPC,
5244 .tos_opc_end = FLD_LAST_OPC,
5245 .tos_hs = fld_handlers
5248 .tos_opc_start = SEQ_FIRST_OPC,
5249 .tos_opc_end = SEQ_LAST_OPC,
5250 .tos_hs = seq_handlers
5253 .tos_opc_start = QUOTA_DQACQ,
5254 .tos_opc_end = QUOTA_LAST_OPC,
5255 .tos_hs = mdt_quota_ops
5258 .tos_opc_start = LLOG_FIRST_OPC,
5259 .tos_opc_end = LLOG_LAST_OPC,
5260 .tos_hs = tgt_llog_handlers
5263 .tos_opc_start = LFSCK_FIRST_OPC,
5264 .tos_opc_end = LFSCK_LAST_OPC,
5265 .tos_hs = tgt_lfsck_handlers
5268 .tos_opc_start = OST_FIRST_OPC,
5269 .tos_opc_end = OST_LAST_OPC,
5270 .tos_hs = mdt_io_ops
5277 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
5279 struct md_device *next = m->mdt_child;
5280 struct lu_device *d = &m->mdt_lu_dev;
5281 struct obd_device *obd = mdt2obd_dev(m);
5282 struct lfsck_stop stop;
5285 stop.ls_status = LS_PAUSED;
5287 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
5289 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
5290 ping_evictor_stop();
5292 /* Remove the HSM /proc entry so the coordinator cannot be
5293 * restarted by a user while it's shutting down.
5295 mdt_hsm_cdt_stop(m);
5297 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
5298 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
5300 if (m->mdt_namespace != NULL)
5301 ldlm_namespace_free_prior(m->mdt_namespace, NULL,
5302 d->ld_obd->obd_force);
5304 obd_exports_barrier(obd);
5305 obd_zombie_barrier();
5307 mdt_quota_fini(env, m);
5309 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
5311 /* Calling the cleanup functions in the same order as in the mdt_init0
5314 mdt_tunables_fini(m);
5316 target_recovery_fini(obd);
5317 upcall_cache_cleanup(m->mdt_identity_cache);
5318 m->mdt_identity_cache = NULL;
5320 mdt_fs_cleanup(env, m);
5322 tgt_fini(env, &m->mdt_lut);
5324 mdt_hsm_cdt_fini(m);
5326 if (m->mdt_los != NULL) {
5327 local_oid_storage_fini(env, m->mdt_los);
5331 if (m->mdt_namespace != NULL) {
5332 ldlm_namespace_free_post(m->mdt_namespace);
5333 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
5336 if (m->mdt_md_root != NULL) {
5337 mdt_object_put(env, m->mdt_md_root);
5338 m->mdt_md_root = NULL;
5341 mdt_seq_fini(env, m);
5343 mdt_fld_fini(env, m);
5348 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5350 LASSERT(atomic_read(&d->ld_ref) == 0);
5352 server_put_mount(mdt_obd_name(m), true);
5357 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
5359 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
5360 struct lu_device_type *ldt, struct lustre_cfg *cfg)
5362 const struct dt_device_param *dt_conf;
5363 struct mdt_thread_info *info;
5364 struct obd_device *obd;
5365 const char *dev = lustre_cfg_string(cfg, 0);
5366 const char *num = lustre_cfg_string(cfg, 2);
5367 struct tg_grants_data *tgd = &m->mdt_lut.lut_tgd;
5368 struct lustre_mount_info *lmi = NULL;
5369 struct lustre_sb_info *lsi;
5371 struct seq_server_site *ss_site;
5372 const char *identity_upcall = "NONE";
5373 struct md_device *next;
5380 lu_device_init(&m->mdt_lu_dev, ldt);
5382 * Environment (env) might be missing mdt_thread_key values at that
5383 * point, if device is allocated when mdt_thread_key is in QUIESCENT
5386 * Usually device allocation path doesn't use module key values, but
5387 * mdt has to do a lot of work here, so allocate key value.
5389 rc = lu_env_refill((struct lu_env *)env);
5393 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5394 LASSERT(info != NULL);
5396 obd = class_name2obd(dev);
5397 LASSERT(obd != NULL);
5399 m->mdt_max_mdsize = MAX_MD_SIZE_OLD;
5400 m->mdt_opts.mo_evict_tgt_nids = 1;
5401 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
5403 lmi = server_get_mount(dev);
5405 CERROR("Cannot get mount info for %s!\n", dev);
5408 lsi = s2lsi(lmi->lmi_sb);
5409 /* CMD is supported only in IAM mode */
5411 node_id = simple_strtol(num, NULL, 10);
5412 obd->u.obt.obt_magic = OBT_MAGIC;
5413 if (lsi->lsi_lmd != NULL &&
5414 lsi->lsi_lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
5415 m->mdt_skip_lfsck = 1;
5418 /* DoM files get IO lock at open by default */
5419 m->mdt_opts.mo_dom_lock = ALWAYS_DOM_LOCK_ON_OPEN;
5420 /* DoM files are read at open and data is packed in the reply */
5421 m->mdt_opts.mo_dom_read_open = 1;
5423 m->mdt_squash.rsi_uid = 0;
5424 m->mdt_squash.rsi_gid = 0;
5425 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
5426 spin_lock_init(&m->mdt_squash.rsi_lock);
5427 spin_lock_init(&m->mdt_lock);
5428 m->mdt_enable_remote_dir = 1;
5429 m->mdt_enable_striped_dir = 1;
5430 m->mdt_enable_dir_migration = 1;
5431 m->mdt_enable_remote_dir_gid = 0;
5432 m->mdt_enable_remote_rename = 1;
5434 atomic_set(&m->mdt_mds_mds_conns, 0);
5435 atomic_set(&m->mdt_async_commit_count, 0);
5437 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
5438 m->mdt_lu_dev.ld_obd = obd;
5439 /* Set this lu_device to obd for error handling purposes. */
5440 obd->obd_lu_dev = &m->mdt_lu_dev;
5442 /* init the stack */
5443 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
5445 CERROR("%s: Can't init device stack, rc %d\n",
5446 mdt_obd_name(m), rc);
5451 ss_site = mdt_seq_site(m);
5452 s->ld_seq_site = ss_site;
5455 /* set server index */
5456 ss_site->ss_node_id = node_id;
5458 /* failover is the default
5459 * FIXME: we do not failout mds0/mgs, which may cause some problems.
5460 * assumed whose ss_node_id == 0 XXX
5462 obd->obd_replayable = 1;
5463 /* No connection accepted until configurations will finish */
5464 obd->obd_no_conn = 1;
5466 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
5467 char *str = lustre_cfg_string(cfg, 4);
5468 if (strchr(str, 'n')) {
5469 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
5470 obd->obd_replayable = 0;
5474 rc = mdt_fld_init(env, mdt_obd_name(m), m);
5476 GOTO(err_fini_stack, rc);
5478 rc = mdt_seq_init(env, m);
5480 GOTO(err_fini_fld, rc);
5482 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
5483 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
5484 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
5485 LDLM_NAMESPACE_SERVER,
5486 LDLM_NAMESPACE_GREEDY,
5488 if (m->mdt_namespace == NULL)
5489 GOTO(err_fini_seq, rc = -ENOMEM);
5491 m->mdt_namespace->ns_lvbp = m;
5492 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
5494 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
5495 /* set obd_namespace for compatibility with old code */
5496 obd->obd_namespace = m->mdt_namespace;
5498 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
5499 OBD_FAIL_MDS_ALL_REQUEST_NET,
5500 OBD_FAIL_MDS_ALL_REPLY_NET);
5502 GOTO(err_free_ns, rc);
5504 /* Amount of available space excluded from granting and reserved
5505 * for metadata. It is in percentage and 50% is default value. */
5506 tgd->tgd_reserved_pcnt = 50;
5508 if (ONE_MB_BRW_SIZE < (1U << tgd->tgd_blockbits))
5509 m->mdt_brw_size = 1U << tgd->tgd_blockbits;
5511 m->mdt_brw_size = ONE_MB_BRW_SIZE;
5513 rc = mdt_fs_setup(env, m, obd, lsi);
5517 fid.f_seq = FID_SEQ_LOCAL_NAME;
5520 rc = local_oid_storage_init(env, m->mdt_bottom, &fid, &m->mdt_los);
5522 GOTO(err_fs_cleanup, rc);
5524 rc = mdt_hsm_cdt_init(m);
5526 CERROR("%s: error initializing coordinator, rc %d\n",
5527 mdt_obd_name(m), rc);
5528 GOTO(err_los_fini, rc);
5531 tgt_adapt_sptlrpc_conf(&m->mdt_lut);
5533 next = m->mdt_child;
5534 dt_conf = next->md_ops->mdo_dtconf_get(env, next);
5536 mntopts = dt_conf->ddp_mntopts;
5538 if (mntopts & MNTOPT_USERXATTR)
5539 m->mdt_opts.mo_user_xattr = 1;
5541 m->mdt_opts.mo_user_xattr = 0;
5543 m->mdt_max_ea_size = dt_conf->ddp_max_ea_size;
5545 if (mntopts & MNTOPT_ACL)
5546 m->mdt_opts.mo_acl = 1;
5548 m->mdt_opts.mo_acl = 0;
5550 /* XXX: to support suppgid for ACL, we enable identity_upcall
5551 * by default, otherwise, maybe got unexpected -EACCESS. */
5552 if (m->mdt_opts.mo_acl)
5553 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
5555 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
5557 &mdt_identity_upcall_cache_ops);
5558 if (IS_ERR(m->mdt_identity_cache)) {
5559 rc = PTR_ERR(m->mdt_identity_cache);
5560 m->mdt_identity_cache = NULL;
5561 GOTO(err_free_hsm, rc);
5564 rc = mdt_tunables_init(m, dev);
5566 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
5567 GOTO(err_recovery, rc);
5570 rc = mdt_quota_init(env, m, cfg);
5572 GOTO(err_procfs, rc);
5574 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
5575 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
5576 "mdt_ldlm_client", m->mdt_ldlm_client);
5578 ping_evictor_start();
5580 /* recovery will be started upon mdt_prepare()
5581 * when the whole stack is complete and ready
5582 * to serve the requests */
5584 /* Reduce the initial timeout on an MDS because it doesn't need such
5585 * a long timeout as an OST does. Adaptive timeouts will adjust this
5586 * value appropriately. */
5587 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
5588 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
5592 mdt_tunables_fini(m);
5594 upcall_cache_cleanup(m->mdt_identity_cache);
5595 m->mdt_identity_cache = NULL;
5597 mdt_hsm_cdt_fini(m);
5599 local_oid_storage_fini(env, m->mdt_los);
5602 mdt_fs_cleanup(env, m);
5604 /* keep recoverable clients */
5606 target_recovery_fini(obd);
5607 obd_exports_barrier(obd);
5608 obd_zombie_barrier();
5609 tgt_fini(env, &m->mdt_lut);
5611 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
5612 obd->obd_namespace = m->mdt_namespace = NULL;
5614 mdt_seq_fini(env, m);
5616 mdt_fld_fini(env, m);
5618 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5621 server_put_mount(dev, true);
5625 /* For interoperability, the left element is old parameter, the right one
5626 * is the new version of the parameter, if some parameter is deprecated,
5627 * the new version should be set as NULL. */
5628 static struct cfg_interop_param mdt_interop_param[] = {
5629 { "mdt.group_upcall", NULL },
5630 { "mdt.quota_type", NULL },
5631 { "mdd.quota_type", NULL },
5632 { "mdt.som", NULL },
5633 { "mdt.rootsquash", "mdt.root_squash" },
5634 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
5638 /* used by MGS to process specific configurations */
5639 static int mdt_process_config(const struct lu_env *env,
5640 struct lu_device *d, struct lustre_cfg *cfg)
5642 struct mdt_device *m = mdt_dev(d);
5643 struct md_device *md_next = m->mdt_child;
5644 struct lu_device *next = md2lu_dev(md_next);
5648 switch (cfg->lcfg_command) {
5650 struct obd_device *obd = d->ld_obd;
5651 /* For interoperability */
5652 struct cfg_interop_param *ptr = NULL;
5653 struct lustre_cfg *old_cfg = NULL;
5657 param = lustre_cfg_string(cfg, 1);
5658 if (param == NULL) {
5659 CERROR("param is empty\n");
5664 ptr = class_find_old_param(param, mdt_interop_param);
5666 if (ptr->new_param == NULL) {
5668 CWARN("For interoperability, skip this %s."
5669 " It is obsolete.\n", ptr->old_param);
5673 CWARN("Found old param %s, changed it to %s.\n",
5674 ptr->old_param, ptr->new_param);
5677 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
5684 count = class_modify_config(cfg, PARAM_MDT,
5685 &obd->obd_kset.kobj);
5687 struct coordinator *cdt = &m->mdt_coordinator;
5689 /* is it an HSM var ? */
5690 count = class_modify_config(cfg, PARAM_HSM,
5691 &cdt->cdt_hsm_kobj);
5693 /* we don't understand; pass it on */
5694 rc = next->ld_ops->ldo_process_config(env, next,
5697 rc = count > 0 ? 0 : count;
5699 rc = count > 0 ? 0 : count;
5703 OBD_FREE(cfg, lustre_cfg_len(cfg->lcfg_bufcount,
5704 cfg->lcfg_buflens));
5708 /* others are passed further */
5709 rc = next->ld_ops->ldo_process_config(env, next, cfg);
5715 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
5716 const struct lu_object_header *hdr,
5717 struct lu_device *d)
5719 struct mdt_object *mo;
5723 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
5725 struct lu_object *o;
5726 struct lu_object_header *h;
5729 h = &mo->mot_header;
5730 lu_object_header_init(h);
5731 lu_object_init(o, h, d);
5732 lu_object_add_top(h, o);
5733 o->lo_ops = &mdt_obj_ops;
5734 spin_lock_init(&mo->mot_write_lock);
5735 mutex_init(&mo->mot_som_mutex);
5736 mutex_init(&mo->mot_lov_mutex);
5737 init_rwsem(&mo->mot_dom_sem);
5738 init_rwsem(&mo->mot_open_sem);
5739 atomic_set(&mo->mot_open_count, 0);
5745 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
5746 const struct lu_object_conf *unused)
5748 struct mdt_device *d = mdt_dev(o->lo_dev);
5749 struct lu_device *under;
5750 struct lu_object *below;
5754 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
5755 PFID(lu_object_fid(o)));
5757 under = &d->mdt_child->md_lu_dev;
5758 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
5759 if (below != NULL) {
5760 lu_object_add(o, below);
5767 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
5769 struct mdt_object *mo = mdt_obj(o);
5770 struct lu_object_header *h;
5774 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
5775 PFID(lu_object_fid(o)));
5777 LASSERT(atomic_read(&mo->mot_open_count) == 0);
5778 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
5781 lu_object_header_fini(h);
5782 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
5787 static int mdt_object_print(const struct lu_env *env, void *cookie,
5788 lu_printer_t p, const struct lu_object *o)
5790 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
5792 return (*p)(env, cookie,
5793 LUSTRE_MDT_NAME"-object@%p(%s %s, writecount=%d)",
5794 mdto, mdto->mot_lov_created ? "lov_created" : "",
5795 mdto->mot_cache_attr ? "cache_attr" : "",
5796 mdto->mot_write_count);
5799 static int mdt_prepare(const struct lu_env *env,
5800 struct lu_device *pdev,
5801 struct lu_device *cdev)
5803 struct mdt_device *mdt = mdt_dev(cdev);
5804 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
5805 struct obd_device *obd = cdev->ld_obd;
5812 rc = next->ld_ops->ldo_prepare(env, cdev, next);
5816 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
5820 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
5824 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
5825 /* The LFSCK instance is registered just now, so it must be there when
5826 * register the namespace to such instance. */
5827 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
5829 if (mdt->mdt_seq_site.ss_node_id == 0) {
5830 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
5831 &mdt->mdt_md_root_fid);
5836 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
5838 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
5839 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
5840 LASSERT(obd->obd_no_conn);
5841 spin_lock(&obd->obd_dev_lock);
5842 obd->obd_no_conn = 0;
5843 spin_unlock(&obd->obd_dev_lock);
5845 if (obd->obd_recovering == 0)
5846 mdt_postrecov(env, mdt);
5851 const struct lu_device_operations mdt_lu_ops = {
5852 .ldo_object_alloc = mdt_object_alloc,
5853 .ldo_process_config = mdt_process_config,
5854 .ldo_prepare = mdt_prepare,
5857 static const struct lu_object_operations mdt_obj_ops = {
5858 .loo_object_init = mdt_object_init,
5859 .loo_object_free = mdt_object_free,
5860 .loo_object_print = mdt_object_print
5863 static int mdt_obd_set_info_async(const struct lu_env *env,
5864 struct obd_export *exp,
5865 __u32 keylen, void *key,
5866 __u32 vallen, void *val,
5867 struct ptlrpc_request_set *set)
5873 if (KEY_IS(KEY_SPTLRPC_CONF)) {
5874 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp));
5882 * Match client and server connection feature flags.
5884 * Compute the compatibility flags for a connection request based on
5885 * features mutually supported by client and server.
5887 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
5888 * must not be updated here, otherwise a partially initialized value may
5889 * be exposed. After the connection request is successfully processed,
5890 * the top-level MDT connect request handler atomically updates the export
5891 * connect flags from the obd_connect_data::ocd_connect_flags field of the
5892 * reply. \see mdt_connect().
5894 * Before 2.7.50 clients will send a struct obd_connect_data_v1 rather than a
5895 * full struct obd_connect_data. So care must be taken when accessing fields
5896 * that are not present in struct obd_connect_data_v1. See LU-16.
5898 * \param exp the obd_export associated with this client/target pair
5899 * \param mdt the target device for the connection
5900 * \param data stores data for this connect request
5903 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
5904 * \retval -EBADE client and server feature requirements are incompatible
5906 static int mdt_connect_internal(const struct lu_env *env,
5907 struct obd_export *exp,
5908 struct mdt_device *mdt,
5909 struct obd_connect_data *data, bool reconnect)
5911 const char *obd_name = mdt_obd_name(mdt);
5912 LASSERT(data != NULL);
5914 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
5916 if (mdt->mdt_bottom->dd_rdonly &&
5917 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
5918 !(data->ocd_connect_flags & OBD_CONNECT_RDONLY))
5921 if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
5922 data->ocd_connect_flags2 &= MDT_CONNECT_SUPPORTED2;
5924 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
5926 if (!mdt->mdt_opts.mo_acl)
5927 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
5929 if (!mdt->mdt_opts.mo_user_xattr)
5930 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
5932 if (OCD_HAS_FLAG(data, BRW_SIZE)) {
5933 data->ocd_brw_size = min(data->ocd_brw_size,
5935 if (data->ocd_brw_size == 0) {
5936 CERROR("%s: cli %s/%p ocd_connect_flags: %#llx "
5937 "ocd_version: %x ocd_grant: %d ocd_index: %u "
5938 "ocd_brw_size unexpectedly zero, network data "
5939 "corruption? Refusing to connect this client\n",
5940 obd_name, exp->exp_client_uuid.uuid,
5941 exp, data->ocd_connect_flags, data->ocd_version,
5942 data->ocd_grant, data->ocd_index);
5947 if (OCD_HAS_FLAG(data, GRANT_PARAM)) {
5948 struct dt_device_param *ddp = &mdt->mdt_lut.lut_dt_conf;
5950 /* client is reporting its page size, for future use */
5951 exp->exp_target_data.ted_pagebits = data->ocd_grant_blkbits;
5952 data->ocd_grant_blkbits = mdt->mdt_lut.lut_tgd.tgd_blockbits;
5953 /* ddp_inodespace may not be power-of-two value, eg. for ldiskfs
5954 * it's LDISKFS_DIR_REC_LEN(20) = 28. */
5955 data->ocd_grant_inobits = fls(ddp->ddp_inodespace - 1);
5956 /* ocd_grant_tax_kb is in 1K byte blocks */
5957 data->ocd_grant_tax_kb = ddp->ddp_extent_tax >> 10;
5958 data->ocd_grant_max_blks = ddp->ddp_max_extent_blks;
5961 /* Save connect_data we have so far because tgt_grant_connect()
5962 * uses it to calculate grant, and we want to save the client
5963 * version before it is overwritten by LUSTRE_VERSION_CODE. */
5964 exp->exp_connect_data = *data;
5965 if (OCD_HAS_FLAG(data, GRANT))
5966 tgt_grant_connect(env, exp, data, !reconnect);
5968 if (OCD_HAS_FLAG(data, MAXBYTES))
5969 data->ocd_maxbytes = mdt->mdt_lut.lut_dt_conf.ddp_maxbytes;
5971 /* NB: Disregard the rule against updating
5972 * exp_connect_data.ocd_connect_flags in this case, since
5973 * tgt_client_new() needs to know if this is a lightweight
5974 * connection, and it is safe to expose this flag before
5975 * connection processing completes. */
5976 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
5977 spin_lock(&exp->exp_lock);
5978 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
5979 spin_unlock(&exp->exp_lock);
5982 data->ocd_version = LUSTRE_VERSION_CODE;
5984 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
5985 CWARN("%s: MDS requires FID support, but client not\n",
5990 if (OCD_HAS_FLAG(data, PINGLESS)) {
5991 if (ptlrpc_pinger_suppress_pings()) {
5992 spin_lock(&exp->exp_obd->obd_dev_lock);
5993 list_del_init(&exp->exp_obd_chain_timed);
5994 spin_unlock(&exp->exp_obd->obd_dev_lock);
5996 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
6000 data->ocd_max_easize = mdt->mdt_max_ea_size;
6002 /* NB: Disregard the rule against updating
6003 * exp_connect_data.ocd_connect_flags in this case, since
6004 * tgt_client_new() needs to know if this is client supports
6005 * multiple modify RPCs, and it is safe to expose this flag before
6006 * connection processing completes. */
6007 if (data->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS) {
6008 data->ocd_maxmodrpcs = max_mod_rpcs_per_client;
6009 spin_lock(&exp->exp_lock);
6010 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_MULTIMODRPCS;
6011 spin_unlock(&exp->exp_lock);
6014 if (OCD_HAS_FLAG(data, CKSUM)) {
6015 __u32 cksum_types = data->ocd_cksum_types;
6017 /* The client set in ocd_cksum_types the checksum types it
6018 * supports. We have to mask off the algorithms that we don't
6020 data->ocd_cksum_types &=
6021 obd_cksum_types_supported_server(obd_name);
6023 if (unlikely(data->ocd_cksum_types == 0)) {
6024 CERROR("%s: Connect with checksum support but no "
6025 "ocd_cksum_types is set\n",
6026 exp->exp_obd->obd_name);
6030 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
6031 "%x\n", exp->exp_obd->obd_name, obd_export_nid2str(exp),
6032 cksum_types, data->ocd_cksum_types);
6034 /* This client does not support OBD_CONNECT_CKSUM
6035 * fall back to CRC32 */
6036 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
6037 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
6038 exp->exp_obd->obd_name, obd_export_nid2str(exp));
6044 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
6045 struct mdt_thread_info *info,
6046 struct mdt_file_data *mfd)
6048 struct lu_context ses;
6052 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
6057 lu_context_enter(&ses);
6059 mdt_ucred(info)->uc_valid = UCRED_OLD;
6060 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
6062 lu_context_exit(&ses);
6063 lu_context_fini(&ses);
6069 static int mdt_export_cleanup(struct obd_export *exp)
6071 struct list_head closing_list;
6072 struct mdt_export_data *med = &exp->exp_mdt_data;
6073 struct obd_device *obd = exp->exp_obd;
6074 struct mdt_device *mdt;
6075 struct mdt_thread_info *info;
6077 struct mdt_file_data *mfd, *n;
6081 INIT_LIST_HEAD(&closing_list);
6082 spin_lock(&med->med_open_lock);
6083 while (!list_empty(&med->med_open_head)) {
6084 struct list_head *tmp = med->med_open_head.next;
6085 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
6087 /* Remove mfd handle so it can't be found again.
6088 * We are consuming the mfd_list reference here. */
6089 class_handle_unhash(&mfd->mfd_open_handle);
6090 list_move_tail(&mfd->mfd_list, &closing_list);
6092 spin_unlock(&med->med_open_lock);
6093 mdt = mdt_dev(obd->obd_lu_dev);
6094 LASSERT(mdt != NULL);
6096 rc = lu_env_init(&env, LCT_MD_THREAD);
6100 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6101 LASSERT(info != NULL);
6102 memset(info, 0, sizeof *info);
6103 info->mti_env = &env;
6104 info->mti_mdt = mdt;
6105 info->mti_exp = exp;
6107 if (!list_empty(&closing_list)) {
6108 struct md_attr *ma = &info->mti_attr;
6110 /* Close any open files (which may also cause orphan
6112 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
6113 list_del_init(&mfd->mfd_list);
6114 ma->ma_need = ma->ma_valid = 0;
6116 /* This file is being closed due to an eviction, it
6117 * could have been modified and now dirty regarding to
6118 * HSM archive, check this!
6119 * The logic here is to mark a file dirty if there's a
6120 * chance it was dirtied before the client was evicted,
6121 * so that we don't have to wait for a release attempt
6122 * before finding out the file was actually dirty and
6123 * fail the release. Aggressively marking it dirty here
6124 * will cause the policy engine to attempt to
6125 * re-archive it; when rearchiving, we can compare the
6126 * current version to the HSM data_version and make the
6127 * archive request into a noop if it's not actually
6130 if (mfd->mfd_open_flags & MDS_FMODE_WRITE)
6131 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
6133 /* Don't unlink orphan on failover umount, LU-184 */
6134 if (exp->exp_flags & OBD_OPT_FAILOVER) {
6135 ma->ma_valid = MA_FLAGS;
6136 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
6138 ma->ma_valid |= MA_FORCE_LOG;
6139 mdt_mfd_close(info, mfd);
6142 info->mti_mdt = NULL;
6143 /* cleanup client slot early */
6144 /* Do not erase record for recoverable client. */
6145 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
6146 tgt_client_del(&env, exp);
6152 static inline void mdt_enable_slc(struct mdt_device *mdt)
6154 if (mdt->mdt_lut.lut_sync_lock_cancel == NEVER_SYNC_ON_CANCEL)
6155 mdt->mdt_lut.lut_sync_lock_cancel = BLOCKING_SYNC_ON_CANCEL;
6158 static inline void mdt_disable_slc(struct mdt_device *mdt)
6160 if (mdt->mdt_lut.lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL)
6161 mdt->mdt_lut.lut_sync_lock_cancel = NEVER_SYNC_ON_CANCEL;
6164 static int mdt_obd_disconnect(struct obd_export *exp)
6171 class_export_get(exp);
6173 if (!(exp->exp_flags & OBD_OPT_FORCE))
6174 tgt_grant_sanity_check(exp->exp_obd, __func__);
6176 if ((exp_connect_flags(exp) & OBD_CONNECT_MDS_MDS) &&
6177 !(exp_connect_flags(exp) & OBD_CONNECT_LIGHTWEIGHT)) {
6178 struct mdt_device *mdt = mdt_dev(exp->exp_obd->obd_lu_dev);
6180 if (atomic_dec_and_test(&mdt->mdt_mds_mds_conns))
6181 mdt_disable_slc(mdt);
6184 rc = server_disconnect_export(exp);
6186 CDEBUG(D_IOCTL, "server disconnect error: rc = %d\n", rc);
6188 tgt_grant_discard(exp);
6190 rc = mdt_export_cleanup(exp);
6191 nodemap_del_member(exp);
6192 class_export_put(exp);
6196 /* mds_connect copy */
6197 static int mdt_obd_connect(const struct lu_env *env,
6198 struct obd_export **exp, struct obd_device *obd,
6199 struct obd_uuid *cluuid,
6200 struct obd_connect_data *data,
6203 struct obd_export *lexp;
6204 struct lustre_handle conn = { 0 };
6205 struct mdt_device *mdt;
6207 lnet_nid_t *client_nid = localdata;
6210 LASSERT(env != NULL);
6211 LASSERT(data != NULL);
6213 if (!exp || !obd || !cluuid)
6216 mdt = mdt_dev(obd->obd_lu_dev);
6218 if ((data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
6219 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
6220 atomic_inc(&mdt->mdt_mds_mds_conns);
6221 mdt_enable_slc(mdt);
6225 * first, check whether the stack is ready to handle requests
6226 * XXX: probably not very appropriate method is used now
6227 * at some point we should find a better one
6229 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) &&
6230 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) &&
6231 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
6232 rc = obd_get_info(env, mdt->mdt_child_exp,
6233 sizeof(KEY_OSP_CONNECTED),
6234 KEY_OSP_CONNECTED, NULL, NULL);
6237 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
6240 rc = class_connect(&conn, obd, cluuid);
6244 lexp = class_conn2export(&conn);
6245 LASSERT(lexp != NULL);
6247 rc = nodemap_add_member(*client_nid, lexp);
6248 if (rc != 0 && rc != -EEXIST)
6251 rc = mdt_connect_internal(env, lexp, mdt, data, false);
6253 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
6256 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
6257 rc = tgt_client_new(env, lexp);
6259 mdt_export_stats_init(obd, lexp, localdata);
6263 class_disconnect(lexp);
6264 nodemap_del_member(lexp);
6268 /* Because we do not want this export to be evicted by pinger,
6269 * let's not add this export to the timed chain list. */
6270 if (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) {
6271 spin_lock(&lexp->exp_obd->obd_dev_lock);
6272 list_del_init(&lexp->exp_obd_chain_timed);
6273 spin_unlock(&lexp->exp_obd->obd_dev_lock);
6280 static int mdt_obd_reconnect(const struct lu_env *env,
6281 struct obd_export *exp, struct obd_device *obd,
6282 struct obd_uuid *cluuid,
6283 struct obd_connect_data *data,
6286 lnet_nid_t *client_nid = localdata;
6290 if (exp == NULL || obd == NULL || cluuid == NULL)
6293 rc = nodemap_add_member(*client_nid, exp);
6294 if (rc != 0 && rc != -EEXIST)
6297 rc = mdt_connect_internal(env, exp, mdt_dev(obd->obd_lu_dev), data,
6300 mdt_export_stats_init(obd, exp, localdata);
6302 nodemap_del_member(exp);
6307 /* FIXME: Can we avoid using these two interfaces? */
6308 static int mdt_init_export(struct obd_export *exp)
6310 struct mdt_export_data *med = &exp->exp_mdt_data;
6314 INIT_LIST_HEAD(&med->med_open_head);
6315 spin_lock_init(&med->med_open_lock);
6316 spin_lock(&exp->exp_lock);
6317 exp->exp_connecting = 1;
6318 spin_unlock(&exp->exp_lock);
6320 OBD_ALLOC(exp->exp_used_slots,
6321 BITS_TO_LONGS(OBD_MAX_RIF_MAX) * sizeof(long));
6322 if (exp->exp_used_slots == NULL)
6325 /* self-export doesn't need client data and ldlm initialization */
6326 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
6327 &exp->exp_client_uuid)))
6330 rc = tgt_client_alloc(exp);
6334 rc = ldlm_init_export(exp);
6341 tgt_client_free(exp);
6343 OBD_FREE(exp->exp_used_slots,
6344 BITS_TO_LONGS(OBD_MAX_RIF_MAX) * sizeof(long));
6345 exp->exp_used_slots = NULL;
6347 CERROR("%s: Failed to initialize export: rc = %d\n",
6348 exp->exp_obd->obd_name, rc);
6352 static int mdt_destroy_export(struct obd_export *exp)
6356 target_destroy_export(exp);
6357 if (exp->exp_used_slots)
6358 OBD_FREE(exp->exp_used_slots,
6359 BITS_TO_LONGS(OBD_MAX_RIF_MAX) * sizeof(long));
6361 /* destroy can be called from failed obd_setup, so
6362 * checking uuid is safer than obd_self_export */
6363 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
6364 &exp->exp_client_uuid)))
6367 ldlm_destroy_export(exp);
6368 tgt_client_free(exp);
6370 LASSERT(list_empty(&exp->exp_outstanding_replies));
6371 LASSERT(list_empty(&exp->exp_mdt_data.med_open_head));
6374 * discard grants once we're sure no more
6375 * interaction with the client is possible
6377 tgt_grant_discard(exp);
6378 if (exp_connect_flags(exp) & OBD_CONNECT_GRANT)
6379 exp->exp_obd->u.obt.obt_lut->lut_tgd.tgd_tot_granted_clients--;
6381 if (!(exp->exp_flags & OBD_OPT_FORCE))
6382 tgt_grant_sanity_check(exp->exp_obd, __func__);
6387 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
6388 struct linkea_data *ldata)
6392 LASSERT(ldata->ld_buf->lb_buf != NULL);
6394 if (!mdt_object_exists(mdt_obj))
6397 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6398 ldata->ld_buf, XATTR_NAME_LINK);
6399 if (rc == -ERANGE) {
6400 /* Buf was too small, figure out what we need. */
6401 lu_buf_free(ldata->ld_buf);
6402 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6403 ldata->ld_buf, XATTR_NAME_LINK);
6406 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
6407 if (ldata->ld_buf->lb_buf == NULL)
6409 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6410 ldata->ld_buf, XATTR_NAME_LINK);
6415 return linkea_init_with_rec(ldata);
6419 * Given an MDT object, try to look up the full path to the object.
6420 * Part of the MDT layer implementation of lfs fid2path.
6422 * \param[in] info Per-thread common data shared by MDT level handlers.
6423 * \param[in] obj Object to do path lookup of
6424 * \param[in,out] fp User-provided struct to store path information
6425 * \param[in] root_fid Root FID of current path should reach
6427 * \retval 0 Lookup successful, path information stored in fp
6428 * \retval -EAGAIN Lookup failed, usually because object is being moved
6429 * \retval negative errno if there was a problem
6431 static int mdt_path_current(struct mdt_thread_info *info,
6432 struct mdt_object *obj,
6433 struct getinfo_fid2path *fp,
6434 struct lu_fid *root_fid)
6436 struct mdt_device *mdt = info->mti_mdt;
6437 struct mdt_object *mdt_obj;
6438 struct link_ea_header *leh;
6439 struct link_ea_entry *lee;
6440 struct lu_name *tmpname = &info->mti_name;
6441 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
6442 struct lu_buf *buf = &info->mti_big_buf;
6445 struct linkea_data ldata = { NULL };
6450 /* temp buffer for path element, the buffer will be finally freed
6451 * in mdt_thread_info_fini */
6452 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
6453 if (buf->lb_buf == NULL)
6457 ptr = fp->gf_u.gf_path + fp->gf_pathlen - 1;
6460 *tmpfid = fp->gf_fid = *mdt_object_fid(obj);
6462 while (!lu_fid_eq(root_fid, &fp->gf_fid)) {
6463 struct lu_buf lmv_buf;
6465 if (!lu_fid_eq(root_fid, &mdt->mdt_md_root_fid) &&
6466 lu_fid_eq(&mdt->mdt_md_root_fid, &fp->gf_fid))
6467 GOTO(out, rc = -ENOENT);
6469 if (lu_fid_eq(mdt_object_fid(obj), tmpfid)) {
6471 mdt_object_get(info->mti_env, mdt_obj);
6473 mdt_obj = mdt_object_find(info->mti_env, mdt, tmpfid);
6474 if (IS_ERR(mdt_obj))
6475 GOTO(out, rc = PTR_ERR(mdt_obj));
6478 if (!mdt_object_exists(mdt_obj)) {
6479 mdt_object_put(info->mti_env, mdt_obj);
6480 GOTO(out, rc = -ENOENT);
6483 if (mdt_object_remote(mdt_obj)) {
6484 mdt_object_put(info->mti_env, mdt_obj);
6485 GOTO(remote_out, rc = -EREMOTE);
6488 rc = mdt_links_read(info, mdt_obj, &ldata);
6490 mdt_object_put(info->mti_env, mdt_obj);
6495 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
6496 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
6497 /* If set, use link #linkno for path lookup, otherwise use
6498 link #0. Only do this for the final path element. */
6499 if (first && fp->gf_linkno < leh->leh_reccount) {
6501 for (count = 0; count < fp->gf_linkno; count++) {
6502 lee = (struct link_ea_entry *)
6503 ((char *)lee + reclen);
6504 linkea_entry_unpack(lee, &reclen, tmpname,
6507 if (fp->gf_linkno < leh->leh_reccount - 1)
6508 /* indicate to user there are more links */
6512 lmv_buf.lb_buf = info->mti_xattr_buf;
6513 lmv_buf.lb_len = sizeof(info->mti_xattr_buf);
6514 /* Check if it is slave stripes */
6515 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6516 &lmv_buf, XATTR_NAME_LMV);
6517 mdt_object_put(info->mti_env, mdt_obj);
6519 union lmv_mds_md *lmm = lmv_buf.lb_buf;
6521 /* For slave stripes, get its master */
6522 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE) {
6523 fp->gf_fid = *tmpfid;
6526 } else if (rc < 0 && rc != -ENODATA) {
6532 /* Pack the name in the end of the buffer */
6533 ptr -= tmpname->ln_namelen;
6534 if (ptr - 1 <= fp->gf_u.gf_path)
6535 GOTO(out, rc = -EOVERFLOW);
6536 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
6539 /* keep the last resolved fid to the client, so the
6540 * client will build the left path on another MDT for
6542 fp->gf_fid = *tmpfid;
6548 ptr++; /* skip leading / */
6549 memmove(fp->gf_u.gf_path, ptr,
6550 fp->gf_u.gf_path + fp->gf_pathlen - ptr);
6557 * Given an MDT object, use mdt_path_current to get the path.
6558 * Essentially a wrapper to retry mdt_path_current a set number of times
6559 * if -EAGAIN is returned (usually because an object is being moved).
6561 * Part of the MDT layer implementation of lfs fid2path.
6563 * \param[in] info Per-thread common data shared by mdt level handlers.
6564 * \param[in] obj Object to do path lookup of
6565 * \param[in,out] fp User-provided struct for arguments and to store path
6568 * \retval 0 Lookup successful, path information stored in fp
6569 * \retval negative errno if there was a problem
6571 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
6572 struct getinfo_fid2path *fp, struct lu_fid *root_fid)
6574 struct mdt_device *mdt = info->mti_mdt;
6579 if (fp->gf_pathlen < 3)
6582 if (root_fid == NULL)
6583 root_fid = &mdt->mdt_md_root_fid;
6585 if (lu_fid_eq(root_fid, mdt_object_fid(obj))) {
6586 fp->gf_u.gf_path[0] = '\0';
6590 /* Retry multiple times in case file is being moved */
6591 while (tries-- && rc == -EAGAIN)
6592 rc = mdt_path_current(info, obj, fp, root_fid);
6598 * Get the full path of the provided FID, as of changelog record recno.
6600 * This checks sanity and looks up object for user provided FID
6601 * before calling the actual path lookup code.
6603 * Part of the MDT layer implementation of lfs fid2path.
6605 * \param[in] info Per-thread common data shared by mdt level handlers.
6606 * \param[in,out] fp User-provided struct for arguments and to store path
6609 * \retval 0 Lookup successful, path information and recno stored in fp
6610 * \retval -ENOENT, object does not exist
6611 * \retval negative errno if there was a problem
6613 static int mdt_fid2path(struct mdt_thread_info *info,
6614 struct lu_fid *root_fid,
6615 struct getinfo_fid2path *fp)
6617 struct mdt_device *mdt = info->mti_mdt;
6618 struct mdt_object *obj;
6622 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
6623 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
6625 if (!fid_is_sane(&fp->gf_fid))
6628 if (!fid_is_namespace_visible(&fp->gf_fid)) {
6629 CDEBUG(D_INFO, "%s: "DFID" is invalid, f_seq should be >= %#llx"
6630 ", or f_oid != 0, or f_ver == 0\n", mdt_obd_name(mdt),
6631 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
6635 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
6638 CDEBUG(D_IOCTL, "cannot find "DFID": rc = %d\n",
6639 PFID(&fp->gf_fid), rc);
6643 if (mdt_object_remote(obj))
6645 else if (!mdt_object_exists(obj))
6651 mdt_object_put(info->mti_env, obj);
6652 CDEBUG(D_IOCTL, "nonlocal object "DFID": rc = %d\n",
6653 PFID(&fp->gf_fid), rc);
6657 rc = mdt_path(info, obj, fp, root_fid);
6659 CDEBUG(D_INFO, "fid "DFID", path %s recno %#llx linkno %u\n",
6660 PFID(&fp->gf_fid), fp->gf_u.gf_path,
6661 fp->gf_recno, fp->gf_linkno);
6663 mdt_object_put(info->mti_env, obj);
6668 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key, int keylen,
6669 void *val, int vallen)
6671 struct getinfo_fid2path *fpout, *fpin;
6672 struct lu_fid *root_fid = NULL;
6675 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
6678 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
6679 lustre_swab_fid2path(fpin);
6681 memcpy(fpout, fpin, sizeof(*fpin));
6682 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
6685 if (keylen >= cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*fpin) +
6686 sizeof(struct lu_fid)) {
6687 /* client sent its root FID, which is normally fileset FID */
6688 root_fid = fpin->gf_u.gf_root_fid;
6689 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
6690 lustre_swab_lu_fid(root_fid);
6692 if (root_fid != NULL && !fid_is_sane(root_fid))
6696 rc = mdt_fid2path(info, root_fid, fpout);
6700 int mdt_get_info(struct tgt_session_info *tsi)
6710 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
6712 CDEBUG(D_IOCTL, "No GETINFO key\n");
6713 RETURN(err_serious(-EFAULT));
6715 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
6718 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
6719 if (vallen == NULL) {
6720 CDEBUG(D_IOCTL, "%s: cannot get RMF_GETINFO_VALLEN buffer\n",
6721 tgt_name(tsi->tsi_tgt));
6722 RETURN(err_serious(-EFAULT));
6725 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
6727 rc = req_capsule_server_pack(tsi->tsi_pill);
6729 RETURN(err_serious(rc));
6731 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
6732 if (valout == NULL) {
6733 CDEBUG(D_IOCTL, "%s: cannot get get-info RPC out buffer\n",
6734 tgt_name(tsi->tsi_tgt));
6735 RETURN(err_serious(-EFAULT));
6738 if (KEY_IS(KEY_FID2PATH)) {
6739 struct mdt_thread_info *info = tsi2mdt_info(tsi);
6741 rc = mdt_rpc_fid2path(info, key, keylen, valout, *vallen);
6742 mdt_thread_info_fini(info);
6749 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
6751 struct obd_ioctl_data *data = karg;
6754 struct mdt_object *obj;
6755 struct mdt_lock_handle *lh;
6759 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
6760 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
6763 fid = (struct lu_fid *)data->ioc_inlbuf1;
6765 if (!fid_is_sane(fid))
6768 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
6770 lh = &mti->mti_lh[MDT_LH_PARENT];
6771 mdt_lock_reg_init(lh, LCK_CR);
6773 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
6775 RETURN(PTR_ERR(obj));
6777 if (mdt_object_remote(obj)) {
6780 * before calling version get the correct MDS should be
6781 * fid, this is error to find remote object here
6783 CERROR("nonlocal object "DFID"\n", PFID(fid));
6784 } else if (!mdt_object_exists(obj)) {
6785 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
6788 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
6789 *(__u64 *)data->ioc_inlbuf2 = version;
6792 mdt_object_unlock_put(mti, obj, lh, 1);
6796 /* ioctls on obd dev */
6797 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
6798 void *karg, void __user *uarg)
6801 struct obd_device *obd = exp->exp_obd;
6802 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
6803 struct dt_device *dt = mdt->mdt_bottom;
6807 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
6808 rc = lu_env_init(&env, LCT_MD_THREAD);
6814 rc = mdt_device_sync(&env, mdt);
6816 case OBD_IOC_SET_READONLY:
6817 rc = dt_sync(&env, dt);
6819 rc = dt_ro(&env, dt);
6821 case OBD_IOC_ABORT_RECOVERY:
6822 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
6823 obd->obd_abort_recovery = 1;
6824 target_stop_recovery_thread(obd);
6827 case OBD_IOC_CHANGELOG_REG:
6828 case OBD_IOC_CHANGELOG_DEREG:
6829 case OBD_IOC_CHANGELOG_CLEAR:
6830 rc = mdt->mdt_child->md_ops->mdo_iocontrol(&env,
6834 case OBD_IOC_START_LFSCK: {
6835 struct md_device *next = mdt->mdt_child;
6836 struct obd_ioctl_data *data = karg;
6837 struct lfsck_start_param lsp;
6839 if (unlikely(data == NULL)) {
6844 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
6845 lsp.lsp_index_valid = 0;
6846 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
6849 case OBD_IOC_STOP_LFSCK: {
6850 struct md_device *next = mdt->mdt_child;
6851 struct obd_ioctl_data *data = karg;
6852 struct lfsck_stop stop;
6854 stop.ls_status = LS_STOPPED;
6855 /* Old lfsck utils may pass NULL @stop. */
6856 if (data->ioc_inlbuf1 == NULL)
6860 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
6862 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
6865 case OBD_IOC_QUERY_LFSCK: {
6866 struct md_device *next = mdt->mdt_child;
6867 struct obd_ioctl_data *data = karg;
6869 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0,
6873 case OBD_IOC_GET_OBJ_VERSION: {
6874 struct mdt_thread_info *mti;
6875 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6876 memset(mti, 0, sizeof *mti);
6877 mti->mti_env = &env;
6881 rc = mdt_ioc_version_get(mti, karg);
6884 case OBD_IOC_CATLOGLIST: {
6885 struct mdt_thread_info *mti;
6887 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6888 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
6889 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
6890 &mti->mti_tmp_fid1);
6895 CERROR("%s: Not supported cmd = %d, rc = %d\n",
6896 mdt_obd_name(mdt), cmd, rc);
6903 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
6905 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
6909 if (!mdt->mdt_skip_lfsck && !mdt->mdt_bottom->dd_rdonly) {
6910 struct lfsck_start_param lsp;
6912 lsp.lsp_start = NULL;
6913 lsp.lsp_index_valid = 0;
6914 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
6915 OBD_IOC_START_LFSCK,
6917 if (rc != 0 && rc != -EALREADY)
6918 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
6919 mdt_obd_name(mdt), rc);
6922 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
6926 static int mdt_obd_postrecov(struct obd_device *obd)
6931 rc = lu_env_init(&env, LCT_MD_THREAD);
6934 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
6939 static struct obd_ops mdt_obd_device_ops = {
6940 .o_owner = THIS_MODULE,
6941 .o_set_info_async = mdt_obd_set_info_async,
6942 .o_connect = mdt_obd_connect,
6943 .o_reconnect = mdt_obd_reconnect,
6944 .o_disconnect = mdt_obd_disconnect,
6945 .o_init_export = mdt_init_export,
6946 .o_destroy_export = mdt_destroy_export,
6947 .o_iocontrol = mdt_iocontrol,
6948 .o_postrecov = mdt_obd_postrecov,
6949 /* Data-on-MDT IO methods */
6950 .o_preprw = mdt_obd_preprw,
6951 .o_commitrw = mdt_obd_commitrw,
6954 static struct lu_device* mdt_device_fini(const struct lu_env *env,
6955 struct lu_device *d)
6957 struct mdt_device *m = mdt_dev(d);
6964 static struct lu_device *mdt_device_free(const struct lu_env *env,
6965 struct lu_device *d)
6967 struct mdt_device *m = mdt_dev(d);
6970 lu_device_fini(&m->mdt_lu_dev);
6976 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
6977 struct lu_device_type *t,
6978 struct lustre_cfg *cfg)
6980 struct lu_device *l;
6981 struct mdt_device *m;
6988 rc = mdt_init0(env, m, t, cfg);
6990 mdt_device_free(env, l);
6995 l = ERR_PTR(-ENOMEM);
6999 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
7000 LU_KEY_INIT(mdt, struct mdt_thread_info);
7002 static void mdt_key_fini(const struct lu_context *ctx,
7003 struct lu_context_key *key, void* data)
7005 struct mdt_thread_info *info = data;
7007 if (info->mti_big_lmm) {
7008 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
7009 info->mti_big_lmm = NULL;
7010 info->mti_big_lmmsize = 0;
7013 if (info->mti_big_acl) {
7014 OBD_FREE_LARGE(info->mti_big_acl, info->mti_big_aclsize);
7015 info->mti_big_acl = NULL;
7016 info->mti_big_aclsize = 0;
7022 /* context key: mdt_thread_key */
7023 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
7025 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
7027 return lu_ucred(info->mti_env);
7030 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
7032 return lu_ucred_check(info->mti_env);
7036 * Enable/disable COS (Commit On Sharing).
7038 * Set/Clear the COS flag in mdt options.
7040 * \param mdt mdt device
7041 * \param val 0 disables COS, other values enable COS
7043 void mdt_enable_cos(struct mdt_device *mdt, bool val)
7048 mdt->mdt_opts.mo_cos = val;
7049 rc = lu_env_init(&env, LCT_LOCAL);
7050 if (unlikely(rc != 0)) {
7051 CWARN("%s: lu_env initialization failed, cannot "
7052 "sync: rc = %d\n", mdt_obd_name(mdt), rc);
7055 mdt_device_sync(&env, mdt);
7060 * Check COS (Commit On Sharing) status.
7062 * Return COS flag status.
7064 * \param mdt mdt device
7066 int mdt_cos_is_enabled(struct mdt_device *mdt)
7068 return mdt->mdt_opts.mo_cos != 0;
7071 static struct lu_device_type_operations mdt_device_type_ops = {
7072 .ldto_device_alloc = mdt_device_alloc,
7073 .ldto_device_free = mdt_device_free,
7074 .ldto_device_fini = mdt_device_fini
7077 static struct lu_device_type mdt_device_type = {
7078 .ldt_tags = LU_DEVICE_MD,
7079 .ldt_name = LUSTRE_MDT_NAME,
7080 .ldt_ops = &mdt_device_type_ops,
7081 .ldt_ctx_tags = LCT_MD_THREAD
7084 static int __init mdt_init(void)
7088 BUILD_BUG_ON(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") !=
7089 FID_NOBRACE_LEN + 1);
7090 BUILD_BUG_ON(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") !=
7092 rc = lu_kmem_init(mdt_caches);
7096 rc = mds_mod_init();
7100 rc = class_register_type(&mdt_obd_device_ops, NULL, true, NULL,
7101 LUSTRE_MDT_NAME, &mdt_device_type);
7106 lu_kmem_fini(mdt_caches);
7113 static void __exit mdt_exit(void)
7115 class_unregister_type(LUSTRE_MDT_NAME);
7117 lu_kmem_fini(mdt_caches);
7120 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
7121 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
7122 MODULE_VERSION(LUSTRE_VERSION_STRING);
7123 MODULE_LICENSE("GPL");
7125 module_init(mdt_init);
7126 module_exit(mdt_exit);