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_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;
807 if (fid != NULL && (b->mbo_valid & OBD_MD_FLSIZE))
808 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
809 PFID(fid), (unsigned long long)b->mbo_size);
812 if (!IS_ERR_OR_NULL(nodemap))
813 nodemap_putref(nodemap);
816 static inline int mdt_body_has_lov(const struct lu_attr *la,
817 const struct mdt_body *body)
819 return (S_ISREG(la->la_mode) && (body->mbo_valid & OBD_MD_FLEASIZE)) ||
820 (S_ISDIR(la->la_mode) && (body->mbo_valid & OBD_MD_FLDIREA));
823 void mdt_client_compatibility(struct mdt_thread_info *info)
825 struct mdt_body *body;
826 struct ptlrpc_request *req = mdt_info_req(info);
827 struct obd_export *exp = req->rq_export;
828 struct md_attr *ma = &info->mti_attr;
829 struct lu_attr *la = &ma->ma_attr;
832 if (exp_connect_layout(exp))
833 /* the client can deal with 16-bit lmm_stripe_count */
836 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
838 if (!mdt_body_has_lov(la, body))
841 /* now we have a reply with a lov for a client not compatible with the
842 * layout lock so we have to clean the layout generation number */
843 if (S_ISREG(la->la_mode))
844 ma->ma_lmm->lmm_layout_gen = 0;
848 static int mdt_attr_get_eabuf_size(struct mdt_thread_info *info,
849 struct mdt_object *o)
851 const struct lu_env *env = info->mti_env;
854 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
863 /* Is it a directory? Let's check for the LMV as well */
864 if (S_ISDIR(lu_object_attr(&mdt_object_child(o)->mo_lu))) {
865 rc2 = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
869 rc2 = mo_xattr_get(env, mdt_object_child(o),
871 XATTR_NAME_DEFAULT_LMV);
873 if ((rc2 < 0 && rc2 != -ENODATA) || (rc2 > rc))
881 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
884 const struct lu_env *env = info->mti_env;
888 LASSERT(info->mti_big_lmm_used == 0);
889 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
893 /* big_lmm may need to be grown */
894 if (info->mti_big_lmmsize < rc) {
895 int size = size_roundup_power2(rc);
897 if (info->mti_big_lmmsize > 0) {
898 /* free old buffer */
899 LASSERT(info->mti_big_lmm);
900 OBD_FREE_LARGE(info->mti_big_lmm,
901 info->mti_big_lmmsize);
902 info->mti_big_lmm = NULL;
903 info->mti_big_lmmsize = 0;
906 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
907 if (info->mti_big_lmm == NULL)
909 info->mti_big_lmmsize = size;
911 LASSERT(info->mti_big_lmmsize >= rc);
913 info->mti_buf.lb_buf = info->mti_big_lmm;
914 info->mti_buf.lb_len = info->mti_big_lmmsize;
915 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
920 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
921 struct md_attr *ma, const char *name)
923 struct md_object *next = mdt_object_child(o);
924 struct lu_buf *buf = &info->mti_buf;
927 if (strcmp(name, XATTR_NAME_LOV) == 0) {
928 buf->lb_buf = ma->ma_lmm;
929 buf->lb_len = ma->ma_lmm_size;
930 LASSERT(!(ma->ma_valid & MA_LOV));
931 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
932 buf->lb_buf = ma->ma_lmv;
933 buf->lb_len = ma->ma_lmv_size;
934 LASSERT(!(ma->ma_valid & MA_LMV));
935 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
936 buf->lb_buf = ma->ma_default_lmv;
937 buf->lb_len = ma->ma_default_lmv_size;
938 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
943 LASSERT(buf->lb_buf);
945 rc = mo_xattr_get(info->mti_env, next, buf, name);
949 if (strcmp(name, XATTR_NAME_LOV) == 0) {
950 if (info->mti_big_lmm_used)
951 ma->ma_lmm = info->mti_big_lmm;
953 /* NOT return LOV EA with hole to old client. */
954 if (unlikely(le32_to_cpu(ma->ma_lmm->lmm_pattern) &
955 LOV_PATTERN_F_HOLE) &&
956 !(exp_connect_flags(info->mti_exp) &
957 OBD_CONNECT_LFSCK)) {
960 ma->ma_lmm_size = rc;
961 ma->ma_valid |= MA_LOV;
963 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
964 if (info->mti_big_lmm_used)
965 ma->ma_lmv = info->mti_big_lmm;
967 ma->ma_lmv_size = rc;
968 ma->ma_valid |= MA_LMV;
969 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
970 ma->ma_default_lmv_size = rc;
971 ma->ma_valid |= MA_LMV_DEF;
974 /* Update mdt_max_mdsize so all clients will be aware that */
975 if (info->mti_mdt->mdt_max_mdsize < rc)
976 info->mti_mdt->mdt_max_mdsize = rc;
979 } else if (rc == -ENODATA) {
982 } else if (rc == -ERANGE) {
983 /* Default LMV has fixed size, so it must be able to fit
984 * in the original buffer */
985 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
987 rc = mdt_big_xattr_get(info, o, name);
989 info->mti_big_lmm_used = 1;
997 int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
1000 struct lu_buf *buf = &info->mti_buf;
1001 struct link_ea_header *leh;
1002 struct link_ea_entry *lee;
1006 buf->lb_buf = info->mti_big_lmm;
1007 buf->lb_len = info->mti_big_lmmsize;
1008 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
1009 buf, XATTR_NAME_LINK);
1010 /* ignore errors, MA_PFID won't be set and it is
1011 * up to the caller to treat this as an error */
1012 if (rc == -ERANGE || buf->lb_len == 0) {
1013 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
1014 buf->lb_buf = info->mti_big_lmm;
1015 buf->lb_len = info->mti_big_lmmsize;
1020 if (rc < sizeof(*leh)) {
1021 CERROR("short LinkEA on "DFID": rc = %d\n",
1022 PFID(mdt_object_fid(o)), rc);
1026 leh = (struct link_ea_header *) buf->lb_buf;
1027 lee = (struct link_ea_entry *)(leh + 1);
1028 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
1029 leh->leh_magic = LINK_EA_MAGIC;
1030 leh->leh_reccount = __swab32(leh->leh_reccount);
1031 leh->leh_len = __swab64(leh->leh_len);
1033 if (leh->leh_magic != LINK_EA_MAGIC)
1035 if (leh->leh_reccount == 0)
1038 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
1039 fid_be_to_cpu(pfid, pfid);
1044 int mdt_attr_get_complex(struct mdt_thread_info *info,
1045 struct mdt_object *o, struct md_attr *ma)
1047 const struct lu_env *env = info->mti_env;
1048 struct md_object *next = mdt_object_child(o);
1049 struct lu_buf *buf = &info->mti_buf;
1050 int need = ma->ma_need;
1057 if (mdt_object_exists(o) == 0)
1058 GOTO(out, rc = -ENOENT);
1059 mode = lu_object_attr(&next->mo_lu);
1061 if (need & MA_INODE) {
1062 ma->ma_need = MA_INODE;
1063 rc = mo_attr_get(env, next, ma);
1068 (void) mdt_get_som(info, o, ma);
1069 ma->ma_valid |= MA_INODE;
1072 if (need & MA_PFID) {
1073 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
1075 ma->ma_valid |= MA_PFID;
1076 /* ignore this error, parent fid is not mandatory */
1080 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
1081 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
1086 if (need & MA_LMV && S_ISDIR(mode)) {
1087 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
1092 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
1093 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
1099 * In the handle of MA_INODE, we may already get the SOM attr.
1101 if (need & MA_SOM && S_ISREG(mode) && !(ma->ma_valid & MA_SOM)) {
1102 rc = mdt_get_som(info, o, ma);
1107 if (need & MA_HSM && S_ISREG(mode)) {
1108 buf->lb_buf = info->mti_xattr_buf;
1109 buf->lb_len = sizeof(info->mti_xattr_buf);
1110 BUILD_BUG_ON(sizeof(struct hsm_attrs) >
1111 sizeof(info->mti_xattr_buf));
1112 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
1113 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
1115 ma->ma_valid |= MA_HSM;
1116 else if (rc2 < 0 && rc2 != -ENODATA)
1117 GOTO(out, rc = rc2);
1120 #ifdef CONFIG_FS_POSIX_ACL
1121 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
1122 buf->lb_buf = ma->ma_acl;
1123 buf->lb_len = ma->ma_acl_size;
1124 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
1126 ma->ma_acl_size = rc2;
1127 ma->ma_valid |= MA_ACL_DEF;
1128 } else if (rc2 == -ENODATA) {
1130 ma->ma_acl_size = 0;
1132 GOTO(out, rc = rc2);
1137 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = %#llx ma_lmm=%p\n",
1138 rc, ma->ma_valid, ma->ma_lmm);
1142 static int mdt_getattr_internal(struct mdt_thread_info *info,
1143 struct mdt_object *o, int ma_need)
1145 struct md_object *next = mdt_object_child(o);
1146 const struct mdt_body *reqbody = info->mti_body;
1147 struct ptlrpc_request *req = mdt_info_req(info);
1148 struct md_attr *ma = &info->mti_attr;
1149 struct lu_attr *la = &ma->ma_attr;
1150 struct req_capsule *pill = info->mti_pill;
1151 const struct lu_env *env = info->mti_env;
1152 struct mdt_body *repbody;
1153 struct lu_buf *buffer = &info->mti_buf;
1154 struct obd_export *exp = info->mti_exp;
1158 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
1159 RETURN(err_serious(-ENOMEM));
1161 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1165 if (mdt_object_remote(o)) {
1166 /* This object is located on remote node.*/
1167 /* Return -ENOTSUPP for old client */
1168 if (!mdt_is_dne_client(req->rq_export))
1169 GOTO(out, rc = -ENOTSUPP);
1171 repbody->mbo_fid1 = *mdt_object_fid(o);
1172 repbody->mbo_valid = OBD_MD_FLID | OBD_MD_MDS;
1176 if (reqbody->mbo_eadatasize > 0) {
1177 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
1178 if (buffer->lb_buf == NULL)
1179 GOTO(out, rc = -EPROTO);
1180 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD,
1183 buffer->lb_buf = NULL;
1185 ma_need &= ~(MA_LOV | MA_LMV);
1186 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
1187 mdt_obd_name(info->mti_mdt),
1188 req->rq_export->exp_client_uuid.uuid);
1191 /* from 2.12.58 intent_getattr pack default LMV in reply */
1192 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1193 ((reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA)) ==
1194 (OBD_MD_MEA | OBD_MD_DEFAULT_MEA)) &&
1195 req_capsule_has_field(&req->rq_pill, &RMF_DEFAULT_MDT_MD,
1197 ma->ma_lmv = buffer->lb_buf;
1198 ma->ma_lmv_size = buffer->lb_len;
1199 ma->ma_default_lmv = req_capsule_server_get(pill,
1200 &RMF_DEFAULT_MDT_MD);
1201 ma->ma_default_lmv_size = req_capsule_get_size(pill,
1202 &RMF_DEFAULT_MDT_MD,
1204 ma->ma_need = MA_INODE;
1205 if (ma->ma_lmv_size > 0)
1206 ma->ma_need |= MA_LMV;
1207 if (ma->ma_default_lmv_size > 0)
1208 ma->ma_need |= MA_LMV_DEF;
1209 } else if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1210 (reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
1211 /* If it is dir and client require MEA, then we got MEA */
1212 /* Assumption: MDT_MD size is enough for lmv size. */
1213 ma->ma_lmv = buffer->lb_buf;
1214 ma->ma_lmv_size = buffer->lb_len;
1215 ma->ma_need = MA_INODE;
1216 if (ma->ma_lmv_size > 0) {
1217 if (reqbody->mbo_valid & OBD_MD_MEA) {
1218 ma->ma_need |= MA_LMV;
1219 } else if (reqbody->mbo_valid & OBD_MD_DEFAULT_MEA) {
1220 ma->ma_need |= MA_LMV_DEF;
1221 ma->ma_default_lmv = buffer->lb_buf;
1223 ma->ma_default_lmv_size = buffer->lb_len;
1224 ma->ma_lmv_size = 0;
1228 ma->ma_lmm = buffer->lb_buf;
1229 ma->ma_lmm_size = buffer->lb_len;
1230 ma->ma_need = MA_INODE | MA_HSM;
1231 if (ma->ma_lmm_size > 0) {
1232 ma->ma_need |= MA_LOV;
1233 /* Older clients may crash if they getattr overstriped
1236 if (!exp_connect_overstriping(exp) &&
1237 mdt_lmm_is_overstriping(ma->ma_lmm))
1238 RETURN(-EOPNOTSUPP);
1242 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1243 reqbody->mbo_valid & OBD_MD_FLDIREA &&
1244 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
1245 /* get default stripe info for this dir. */
1246 ma->ma_need |= MA_LOV_DEF;
1248 ma->ma_need |= ma_need;
1250 rc = mdt_attr_get_complex(info, o, ma);
1252 CDEBUG(rc == -ENOENT ? D_OTHER : D_ERROR,
1253 "%s: getattr error for "DFID": rc = %d\n",
1254 mdt_obd_name(info->mti_mdt),
1255 PFID(mdt_object_fid(o)), rc);
1259 /* if file is released, check if a restore is running */
1260 if (ma->ma_valid & MA_HSM) {
1261 repbody->mbo_valid |= OBD_MD_TSTATE;
1262 if ((ma->ma_hsm.mh_flags & HS_RELEASED) &&
1263 mdt_hsm_restore_is_running(info, mdt_object_fid(o)))
1264 repbody->mbo_t_state = MS_RESTORE;
1267 if (likely(ma->ma_valid & MA_INODE))
1268 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
1272 if (mdt_body_has_lov(la, reqbody)) {
1273 if (ma->ma_valid & MA_LOV) {
1274 LASSERT(ma->ma_lmm_size);
1275 repbody->mbo_eadatasize = ma->ma_lmm_size;
1276 if (S_ISDIR(la->la_mode))
1277 repbody->mbo_valid |= OBD_MD_FLDIREA;
1279 repbody->mbo_valid |= OBD_MD_FLEASIZE;
1280 mdt_dump_lmm(D_INFO, ma->ma_lmm, repbody->mbo_valid);
1282 if (ma->ma_valid & MA_LMV) {
1283 /* Return -ENOTSUPP for old client */
1284 if (!mdt_is_striped_client(req->rq_export))
1287 LASSERT(S_ISDIR(la->la_mode));
1288 mdt_dump_lmv(D_INFO, ma->ma_lmv);
1289 repbody->mbo_eadatasize = ma->ma_lmv_size;
1290 repbody->mbo_valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
1292 if (ma->ma_valid & MA_LMV_DEF) {
1293 /* Return -ENOTSUPP for old client */
1294 if (!mdt_is_striped_client(req->rq_export))
1296 LASSERT(S_ISDIR(la->la_mode));
1298 * when ll_dir_getstripe() gets default LMV, it
1299 * checks mbo_eadatasize.
1301 if (!(ma->ma_valid & MA_LMV))
1302 repbody->mbo_eadatasize =
1303 ma->ma_default_lmv_size;
1304 repbody->mbo_valid |= (OBD_MD_FLDIREA |
1305 OBD_MD_DEFAULT_MEA);
1307 } else if (S_ISLNK(la->la_mode) &&
1308 reqbody->mbo_valid & OBD_MD_LINKNAME) {
1309 buffer->lb_buf = ma->ma_lmm;
1310 /* eadatasize from client includes NULL-terminator, so
1311 * there is no need to read it */
1312 buffer->lb_len = reqbody->mbo_eadatasize - 1;
1313 rc = mo_readlink(env, next, buffer);
1314 if (unlikely(rc <= 0)) {
1315 CERROR("%s: readlink failed for "DFID": rc = %d\n",
1316 mdt_obd_name(info->mti_mdt),
1317 PFID(mdt_object_fid(o)), rc);
1320 int print_limit = min_t(int, PAGE_SIZE - 128, rc);
1322 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
1324 repbody->mbo_valid |= OBD_MD_LINKNAME;
1325 /* we need to report back size with NULL-terminator
1326 * because client expects that */
1327 repbody->mbo_eadatasize = rc + 1;
1328 if (repbody->mbo_eadatasize != reqbody->mbo_eadatasize)
1329 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
1330 "on "DFID ", expected %d\n",
1331 mdt_obd_name(info->mti_mdt),
1332 rc, PFID(mdt_object_fid(o)),
1333 reqbody->mbo_eadatasize - 1);
1334 /* NULL terminate */
1335 ((char *)ma->ma_lmm)[rc] = 0;
1337 /* If the total CDEBUG() size is larger than a page, it
1338 * will print a warning to the console, avoid this by
1339 * printing just the last part of the symlink. */
1340 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
1341 print_limit < rc ? "..." : "", print_limit,
1342 (char *)ma->ma_lmm + rc - print_limit, rc);
1347 if (reqbody->mbo_valid & OBD_MD_FLMODEASIZE) {
1348 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
1349 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
1350 CDEBUG(D_INODE, "changing the max MD size to %u\n",
1351 repbody->mbo_max_mdsize);
1354 #ifdef CONFIG_FS_POSIX_ACL
1355 if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
1356 (reqbody->mbo_valid & OBD_MD_FLACL)) {
1357 struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
1358 if (IS_ERR(nodemap))
1359 RETURN(PTR_ERR(nodemap));
1361 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
1362 nodemap_putref(nodemap);
1368 mdt_counter_incr(req, LPROC_MDT_GETATTR);
1373 static int mdt_getattr(struct tgt_session_info *tsi)
1375 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1376 struct mdt_object *obj = info->mti_object;
1377 struct req_capsule *pill = info->mti_pill;
1378 struct mdt_body *reqbody;
1379 struct mdt_body *repbody;
1383 if (unlikely(info->mti_object == NULL))
1386 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1388 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1390 /* Special case for Data-on-MDT files to get data version */
1391 if (unlikely(reqbody->mbo_valid & OBD_MD_FLDATAVERSION)) {
1392 rc = mdt_data_version_get(tsi);
1396 /* Unlike intent case where we need to pre-fill out buffers early on
1397 * in intent policy for ldlm reasons, here we can have a much better
1398 * guess at EA size by just reading it from disk.
1399 * Exceptions are readdir and (missing) directory striping */
1401 if (reqbody->mbo_valid & OBD_MD_LINKNAME) {
1402 /* No easy way to know how long is the symlink, but it cannot
1403 * be more than PATH_MAX, so we allocate +1 */
1405 /* A special case for fs ROOT: getattr there might fetch
1406 * default EA for entire fs, not just for this dir!
1408 } else if (lu_fid_eq(mdt_object_fid(obj),
1409 &info->mti_mdt->mdt_md_root_fid) &&
1410 (reqbody->mbo_valid & OBD_MD_FLDIREA) &&
1411 (lustre_msg_get_opc(mdt_info_req(info)->rq_reqmsg) ==
1413 /* Should the default strping be bigger, mdt_fix_reply
1414 * will reallocate */
1415 rc = DEF_REP_MD_SIZE;
1417 /* Read the actual EA size from disk */
1418 rc = mdt_attr_get_eabuf_size(info, obj);
1422 GOTO(out, rc = err_serious(rc));
1424 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, rc);
1426 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
1427 * by default. If the target object has more ACL entries, then
1428 * enlarge the buffer when necessary. */
1429 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
1430 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
1432 rc = req_capsule_server_pack(pill);
1433 if (unlikely(rc != 0))
1434 GOTO(out, rc = err_serious(rc));
1436 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1437 LASSERT(repbody != NULL);
1438 repbody->mbo_eadatasize = 0;
1439 repbody->mbo_aclsize = 0;
1441 rc = mdt_check_ucred(info);
1443 GOTO(out_shrink, rc);
1445 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1447 rc = mdt_getattr_internal(info, obj, 0);
1450 mdt_client_compatibility(info);
1451 rc2 = mdt_fix_reply(info);
1455 mdt_thread_info_fini(info);
1460 * Handler of layout intent RPC requiring the layout modification
1462 * \param[in] info thread environment
1463 * \param[in] obj object
1464 * \param[in] layout layout change descriptor
1466 * \retval 0 on success
1467 * \retval < 0 error code
1469 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
1470 struct md_layout_change *layout)
1472 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LOCAL];
1476 if (!mdt_object_exists(obj))
1477 GOTO(out, rc = -ENOENT);
1479 if (!S_ISREG(lu_object_attr(&obj->mot_obj)))
1480 GOTO(out, rc = -EINVAL);
1482 rc = mo_permission(info->mti_env, NULL, mdt_object_child(obj), NULL,
1487 /* take layout lock to prepare layout change */
1488 mdt_lock_reg_init(lh, LCK_EX);
1489 rc = mdt_object_lock(info, obj, lh, MDS_INODELOCK_LAYOUT);
1493 mutex_lock(&obj->mot_som_mutex);
1494 rc = mo_layout_change(info->mti_env, mdt_object_child(obj), layout);
1495 mutex_unlock(&obj->mot_som_mutex);
1496 mdt_object_unlock(info, obj, lh, 1);
1502 * Exchange MOF_LOV_CREATED flags between two objects after a
1503 * layout swap. No assumption is made on whether o1 or o2 have
1504 * created objects or not.
1506 * \param[in,out] o1 First swap layout object
1507 * \param[in,out] o2 Second swap layout object
1509 static void mdt_swap_lov_flag(struct mdt_object *o1, struct mdt_object *o2)
1511 unsigned int o1_lov_created = o1->mot_lov_created;
1513 mutex_lock(&o1->mot_lov_mutex);
1514 mutex_lock(&o2->mot_lov_mutex);
1516 o1->mot_lov_created = o2->mot_lov_created;
1517 o2->mot_lov_created = o1_lov_created;
1519 mutex_unlock(&o2->mot_lov_mutex);
1520 mutex_unlock(&o1->mot_lov_mutex);
1523 static int mdt_swap_layouts(struct tgt_session_info *tsi)
1525 struct mdt_thread_info *info;
1526 struct ptlrpc_request *req = tgt_ses_req(tsi);
1527 struct obd_export *exp = req->rq_export;
1528 struct mdt_object *o1, *o2, *o;
1529 struct mdt_lock_handle *lh1, *lh2;
1530 struct mdc_swap_layouts *msl;
1534 /* client does not support layout lock, so layout swaping
1536 * FIXME: there is a problem for old clients which don't support
1537 * layout lock yet. If those clients have already opened the file
1538 * they won't be notified at all so that old layout may still be
1539 * used to do IO. This can be fixed after file release is landed by
1540 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1541 if (!exp_connect_layout(exp))
1542 RETURN(-EOPNOTSUPP);
1544 info = tsi2mdt_info(tsi);
1545 if (unlikely(info->mti_object == NULL))
1548 if (info->mti_dlm_req != NULL)
1549 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
1551 o1 = info->mti_object;
1552 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1553 &info->mti_body->mbo_fid2);
1555 GOTO(out, rc = PTR_ERR(o));
1557 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1558 GOTO(put, rc = -ENOENT);
1560 rc = lu_fid_cmp(&info->mti_body->mbo_fid1, &info->mti_body->mbo_fid2);
1561 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1567 /* permission check. Make sure the calling process having permission
1568 * to write both files. */
1569 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1574 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1579 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1581 GOTO(put, rc = -EPROTO);
1583 lh1 = &info->mti_lh[MDT_LH_NEW];
1584 mdt_lock_reg_init(lh1, LCK_EX);
1585 lh2 = &info->mti_lh[MDT_LH_OLD];
1586 mdt_lock_reg_init(lh2, LCK_EX);
1588 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1589 MDS_INODELOCK_XATTR);
1593 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1594 MDS_INODELOCK_XATTR);
1598 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1599 mdt_object_child(o2), msl->msl_flags);
1603 mdt_swap_lov_flag(o1, o2);
1606 mdt_object_unlock(info, o2, lh2, rc);
1608 mdt_object_unlock(info, o1, lh1, rc);
1610 mdt_object_put(info->mti_env, o);
1612 mdt_thread_info_fini(info);
1616 static int mdt_raw_lookup(struct mdt_thread_info *info,
1617 struct mdt_object *parent,
1618 const struct lu_name *lname,
1619 struct ldlm_reply *ldlm_rep)
1621 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1625 LASSERT(!info->mti_cross_ref);
1627 /* Only got the fid of this obj by name */
1628 fid_zero(child_fid);
1629 rc = mdo_lookup(info->mti_env, mdt_object_child(info->mti_object),
1630 lname, child_fid, &info->mti_spec);
1632 struct mdt_body *repbody;
1634 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1635 repbody->mbo_fid1 = *child_fid;
1636 repbody->mbo_valid = OBD_MD_FLID;
1637 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1638 } else if (rc == -ENOENT) {
1639 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1646 * UPDATE lock should be taken against parent, and be released before exit;
1647 * child_bits lock should be taken against child, and be returned back:
1648 * (1)normal request should release the child lock;
1649 * (2)intent request will grant the lock to client.
1651 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1652 struct mdt_lock_handle *lhc,
1654 struct ldlm_reply *ldlm_rep)
1656 struct ptlrpc_request *req = mdt_info_req(info);
1657 struct mdt_body *reqbody = NULL;
1658 struct mdt_object *parent = info->mti_object;
1659 struct mdt_object *child;
1660 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1661 struct lu_name *lname = NULL;
1662 struct mdt_lock_handle *lhp = NULL;
1663 struct ldlm_lock *lock;
1664 struct req_capsule *pill = info->mti_pill;
1672 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1673 LASSERT(ergo(is_resent,
1674 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1679 if (info->mti_cross_ref) {
1680 /* Only getattr on the child. Parent is on another node. */
1681 mdt_set_disposition(info, ldlm_rep,
1682 DISP_LOOKUP_EXECD | DISP_LOOKUP_POS);
1684 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1686 PFID(mdt_object_fid(child)), ldlm_rep);
1688 rc = mdt_check_resent_lock(info, child, lhc);
1691 } else if (rc > 0) {
1692 mdt_lock_handle_init(lhc);
1693 mdt_lock_reg_init(lhc, LCK_PR);
1696 * Object's name entry is on another MDS, it will
1697 * request PERM lock only because LOOKUP lock is owned
1698 * by the MDS where name entry resides.
1700 * TODO: it should try layout lock too. - Jinshan
1702 child_bits &= ~(MDS_INODELOCK_LOOKUP |
1703 MDS_INODELOCK_LAYOUT);
1704 child_bits |= MDS_INODELOCK_PERM;
1706 rc = mdt_object_lock(info, child, lhc, child_bits);
1711 /* Finally, we can get attr for child. */
1712 if (!mdt_object_exists(child)) {
1713 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
1715 "remote object doesn't exist.");
1716 mdt_object_unlock(info, child, lhc, 1);
1720 rc = mdt_getattr_internal(info, child, 0);
1721 if (unlikely(rc != 0))
1722 mdt_object_unlock(info, child, lhc, 1);
1724 mdt_pack_secctx_in_reply(info, child);
1729 lname = &info->mti_name;
1730 mdt_name_unpack(pill, &RMF_NAME, lname, MNF_FIX_ANON);
1732 if (lu_name_is_valid(lname)) {
1733 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", "
1734 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1735 PNAME(lname), ldlm_rep);
1737 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1738 if (unlikely(reqbody == NULL))
1739 RETURN(err_serious(-EPROTO));
1741 *child_fid = reqbody->mbo_fid2;
1743 if (unlikely(!fid_is_sane(child_fid)))
1744 RETURN(err_serious(-EINVAL));
1746 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1748 PFID(mdt_object_fid(parent)),
1749 PFID(&reqbody->mbo_fid2), ldlm_rep);
1752 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1754 if (unlikely(!mdt_object_exists(parent)) && lu_name_is_valid(lname)) {
1755 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1757 "Parent doesn't exist!");
1761 if (mdt_object_remote(parent)) {
1762 CERROR("%s: parent "DFID" is on remote target\n",
1763 mdt_obd_name(info->mti_mdt),
1764 PFID(mdt_object_fid(parent)));
1768 if (lu_name_is_valid(lname)) {
1769 /* Always allow to lookup ".." */
1770 if (unlikely(lname->ln_namelen == 2 &&
1771 lname->ln_name[0] == '.' &&
1772 lname->ln_name[1] == '.'))
1773 info->mti_spec.sp_permitted = 1;
1775 if (info->mti_body->mbo_valid == OBD_MD_FLID) {
1776 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1781 /* step 1: lock parent only if parent is a directory */
1782 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
1783 lhp = &info->mti_lh[MDT_LH_PARENT];
1784 mdt_lock_pdo_init(lhp, LCK_PR, lname);
1785 rc = mdt_object_lock(info, parent, lhp,
1786 MDS_INODELOCK_UPDATE);
1787 if (unlikely(rc != 0))
1791 /* step 2: lookup child's fid by name */
1792 fid_zero(child_fid);
1793 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
1794 child_fid, &info->mti_spec);
1796 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1799 GOTO(out_parent, rc);
1802 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1805 *step 3: find the child object by fid & lock it.
1806 * regardless if it is local or remote.
1808 *Note: LU-3240 (commit 762f2114d282a98ebfa4dbbeea9298a8088ad24e)
1809 * set parent dir fid the same as child fid in getattr by fid case
1810 * we should not lu_object_find() the object again, could lead
1811 * to hung if there is a concurrent unlink destroyed the object.
1813 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
1814 mdt_object_get(info->mti_env, parent);
1817 child = mdt_object_find(info->mti_env, info->mti_mdt,
1821 if (unlikely(IS_ERR(child)))
1822 GOTO(out_parent, rc = PTR_ERR(child));
1824 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout * 2);
1825 if (!mdt_object_exists(child)) {
1826 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1828 "Object doesn't exist!");
1829 GOTO(out_child, rc = -ENOENT);
1832 rc = mdt_check_resent_lock(info, child, lhc);
1834 GOTO(out_child, rc);
1835 } else if (rc > 0) {
1836 mdt_lock_handle_init(lhc);
1837 mdt_lock_reg_init(lhc, LCK_PR);
1839 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1840 mdt_object_exists(child) && !mdt_object_remote(child)) {
1841 struct md_attr *ma = &info->mti_attr;
1844 ma->ma_need = MA_INODE;
1845 rc = mdt_attr_get_complex(info, child, ma);
1846 if (unlikely(rc != 0))
1847 GOTO(out_child, rc);
1849 /* If the file has not been changed for some time, we
1850 * return not only a LOOKUP lock, but also an UPDATE
1851 * lock and this might save us RPC on later STAT. For
1852 * directories, it also let negative dentry cache start
1853 * working for this dir. */
1854 if (ma->ma_valid & MA_INODE &&
1855 ma->ma_attr.la_valid & LA_CTIME &&
1856 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1857 ma->ma_attr.la_ctime < ktime_get_real_seconds())
1858 child_bits |= MDS_INODELOCK_UPDATE;
1861 /* layout lock must be granted in a best-effort way
1862 * for IT operations */
1863 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1864 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
1865 !mdt_object_remote(child) && ldlm_rep != NULL) {
1866 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1867 exp_connect_layout(info->mti_exp)) {
1868 /* try to grant layout lock for regular file. */
1869 try_bits = MDS_INODELOCK_LAYOUT;
1871 /* Acquire DOM lock in advance for data-on-mdt file */
1872 if (child != parent)
1873 try_bits |= MDS_INODELOCK_DOM;
1876 if (try_bits != 0) {
1877 /* try layout lock, it may fail to be granted due to
1878 * contention at LOOKUP or UPDATE */
1879 rc = mdt_object_lock_try(info, child, lhc, &child_bits,
1881 if (child_bits & MDS_INODELOCK_LAYOUT)
1884 /* Do not enqueue the UPDATE lock from MDT(cross-MDT),
1885 * client will enqueue the lock to the remote MDT */
1886 if (mdt_object_remote(child))
1887 child_bits &= ~MDS_INODELOCK_UPDATE;
1888 rc = mdt_object_lock(info, child, lhc, child_bits);
1890 if (unlikely(rc != 0))
1891 GOTO(out_child, rc);
1894 /* finally, we can get attr for child. */
1895 rc = mdt_getattr_internal(info, child, ma_need);
1896 if (unlikely(rc != 0)) {
1897 mdt_object_unlock(info, child, lhc, 1);
1898 GOTO(out_child, rc);
1901 mdt_pack_secctx_in_reply(info, child);
1903 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1905 /* Debugging code. */
1906 LDLM_DEBUG(lock, "Returning lock to client");
1907 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1908 &lock->l_resource->lr_name),
1909 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1910 PLDLMRES(lock->l_resource),
1911 PFID(mdt_object_fid(child)));
1913 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
1914 mdt_object_exists(child) && !mdt_object_remote(child) &&
1916 mdt_object_put(info->mti_env, child);
1917 rc = mdt_pack_size2body(info, child_fid,
1919 if (rc != 0 && child_bits & MDS_INODELOCK_DOM) {
1920 /* DOM lock was taken in advance but this is
1921 * not DoM file. Drop the lock.
1923 lock_res_and_lock(lock);
1924 ldlm_inodebits_drop(lock, MDS_INODELOCK_DOM);
1925 unlock_res_and_lock(lock);
1927 LDLM_LOCK_PUT(lock);
1928 GOTO(out_parent, rc = 0);
1930 LDLM_LOCK_PUT(lock);
1935 mdt_object_put(info->mti_env, child);
1938 mdt_object_unlock(info, parent, lhp, 1);
1942 /* normal handler: should release the child lock */
1943 static int mdt_getattr_name(struct tgt_session_info *tsi)
1945 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1946 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1947 struct mdt_body *reqbody;
1948 struct mdt_body *repbody;
1952 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1953 LASSERT(reqbody != NULL);
1954 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1955 LASSERT(repbody != NULL);
1957 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1958 repbody->mbo_eadatasize = 0;
1959 repbody->mbo_aclsize = 0;
1961 rc = mdt_init_ucred_intent_getattr(info, reqbody);
1963 GOTO(out_shrink, rc);
1965 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1966 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1967 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1968 lhc->mlh_reg_lh.cookie = 0;
1970 mdt_exit_ucred(info);
1973 mdt_client_compatibility(info);
1974 rc2 = mdt_fix_reply(info);
1977 mdt_thread_info_fini(info);
1981 static int mdt_rmfid_unlink(struct mdt_thread_info *info,
1982 const struct lu_fid *pfid,
1983 const struct lu_name *name,
1984 struct mdt_object *obj, s64 ctime)
1986 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1987 struct ldlm_enqueue_info *einfo = &info->mti_einfo[0];
1988 struct mdt_device *mdt = info->mti_mdt;
1989 struct md_attr *ma = &info->mti_attr;
1990 struct mdt_lock_handle *parent_lh;
1991 struct mdt_lock_handle *child_lh;
1992 struct mdt_object *pobj;
1993 bool cos_incompat = false;
1997 pobj = mdt_object_find(info->mti_env, mdt, pfid);
1999 GOTO(out, rc = PTR_ERR(pobj));
2001 parent_lh = &info->mti_lh[MDT_LH_PARENT];
2002 mdt_lock_pdo_init(parent_lh, LCK_PW, name);
2003 rc = mdt_object_lock(info, pobj, parent_lh, MDS_INODELOCK_UPDATE);
2005 GOTO(put_parent, rc);
2007 if (mdt_object_remote(pobj))
2008 cos_incompat = true;
2010 rc = mdo_lookup(info->mti_env, mdt_object_child(pobj),
2011 name, child_fid, &info->mti_spec);
2013 GOTO(unlock_parent, rc);
2015 if (!lu_fid_eq(child_fid, mdt_object_fid(obj)))
2016 GOTO(unlock_parent, rc = -EREMCHG);
2018 child_lh = &info->mti_lh[MDT_LH_CHILD];
2019 mdt_lock_reg_init(child_lh, LCK_EX);
2020 rc = mdt_reint_striped_lock(info, obj, child_lh,
2021 MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE,
2022 einfo, cos_incompat);
2024 GOTO(unlock_parent, rc);
2026 if (atomic_read(&obj->mot_open_count)) {
2027 CDEBUG(D_OTHER, "object "DFID" open, skip\n",
2028 PFID(mdt_object_fid(obj)));
2029 GOTO(unlock_child, rc = -EBUSY);
2033 ma->ma_valid = MA_INODE;
2034 ma->ma_attr.la_valid = LA_CTIME;
2035 ma->ma_attr.la_ctime = ctime;
2037 mutex_lock(&obj->mot_lov_mutex);
2039 rc = mdo_unlink(info->mti_env, mdt_object_child(pobj),
2040 mdt_object_child(obj), name, ma, 0);
2042 mutex_unlock(&obj->mot_lov_mutex);
2045 mdt_reint_striped_unlock(info, obj, child_lh, einfo, 1);
2047 mdt_object_unlock(info, pobj, parent_lh, 1);
2049 mdt_object_put(info->mti_env, pobj);
2054 static int mdt_rmfid_check_permission(struct mdt_thread_info *info,
2055 struct mdt_object *obj)
2057 struct lu_ucred *uc = lu_ucred(info->mti_env);
2058 struct md_attr *ma = &info->mti_attr;
2059 struct lu_attr *la = &ma->ma_attr;
2063 ma->ma_need = MA_INODE;
2064 rc = mo_attr_get(info->mti_env, mdt_object_child(obj), ma);
2068 if (la->la_flags & LUSTRE_IMMUTABLE_FL)
2071 if (md_capable(uc, CFS_CAP_DAC_OVERRIDE))
2073 if (uc->uc_fsuid == la->la_uid) {
2074 if ((la->la_mode & S_IWUSR) == 0)
2076 } else if (uc->uc_fsgid == la->la_gid) {
2077 if ((la->la_mode & S_IWGRP) == 0)
2079 } else if ((la->la_mode & S_IWOTH) == 0) {
2087 static int mdt_rmfid_one(struct mdt_thread_info *info, struct lu_fid *fid,
2090 struct mdt_device *mdt = info->mti_mdt;
2091 struct mdt_object *obj = NULL;
2092 struct linkea_data ldata = { NULL };
2093 struct lu_buf *buf = &info->mti_big_buf;
2094 struct lu_name *name = &info->mti_name;
2095 struct lu_fid *pfid = &info->mti_tmp_fid1;
2096 struct link_ea_header *leh;
2097 struct link_ea_entry *lee;
2098 int reclen, count, rc = 0;
2101 if (!fid_is_sane(fid))
2102 GOTO(out, rc = -EINVAL);
2104 if (!fid_is_namespace_visible(fid))
2105 GOTO(out, rc = -EINVAL);
2107 obj = mdt_object_find(info->mti_env, mdt, fid);
2109 GOTO(out, rc = PTR_ERR(obj));
2111 if (mdt_object_remote(obj))
2112 GOTO(out, rc = -EREMOTE);
2113 if (!mdt_object_exists(obj) || lu_object_is_dying(&obj->mot_header))
2114 GOTO(out, rc = -ENOENT);
2116 rc = mdt_rmfid_check_permission(info, obj);
2121 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
2123 GOTO(out, rc = -ENOMEM);
2126 rc = mdt_links_read(info, obj, &ldata);
2131 lee = (struct link_ea_entry *)(leh + 1);
2132 for (count = 0; count < leh->leh_reccount; count++) {
2133 /* remove every hardlink */
2134 linkea_entry_unpack(lee, &reclen, name, pfid);
2135 lee = (struct link_ea_entry *) ((char *)lee + reclen);
2136 rc = mdt_rmfid_unlink(info, pfid, name, obj, ctime);
2142 if (obj && !IS_ERR(obj))
2143 mdt_object_put(info->mti_env, obj);
2144 if (info->mti_big_buf.lb_buf)
2145 lu_buf_free(&info->mti_big_buf);
2150 static int mdt_rmfid(struct tgt_session_info *tsi)
2152 struct mdt_thread_info *mti = tsi2mdt_info(tsi);
2153 struct mdt_body *reqbody;
2154 struct lu_fid *fids, *rfids;
2160 reqbody = req_capsule_client_get(tsi->tsi_pill, &RMF_MDT_BODY);
2161 if (reqbody == NULL)
2163 bufsize = req_capsule_get_size(tsi->tsi_pill, &RMF_FID_ARRAY,
2165 nr = bufsize / sizeof(struct lu_fid);
2166 if (nr * sizeof(struct lu_fid) != bufsize)
2168 req_capsule_set_size(tsi->tsi_pill, &RMF_RCS,
2169 RCL_SERVER, nr * sizeof(__u32));
2170 req_capsule_set_size(tsi->tsi_pill, &RMF_FID_ARRAY,
2171 RCL_SERVER, nr * sizeof(struct lu_fid));
2172 rc = req_capsule_server_pack(tsi->tsi_pill);
2174 GOTO(out, rc = err_serious(rc));
2175 fids = req_capsule_client_get(tsi->tsi_pill, &RMF_FID_ARRAY);
2178 rcs = req_capsule_server_get(tsi->tsi_pill, &RMF_RCS);
2180 rfids = req_capsule_server_get(tsi->tsi_pill, &RMF_FID_ARRAY);
2183 mdt_init_ucred(mti, reqbody);
2184 for (i = 0; i < nr; i++) {
2186 rcs[i] = mdt_rmfid_one(mti, fids + i, reqbody->mbo_ctime);
2188 mdt_exit_ucred(mti);
2194 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2195 void *karg, void __user *uarg);
2197 static int mdt_set_info(struct tgt_session_info *tsi)
2199 struct ptlrpc_request *req = tgt_ses_req(tsi);
2202 int keylen, vallen, rc = 0;
2206 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
2208 DEBUG_REQ(D_HA, req, "no set_info key");
2209 RETURN(err_serious(-EFAULT));
2212 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
2215 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
2217 DEBUG_REQ(D_HA, req, "no set_info val");
2218 RETURN(err_serious(-EFAULT));
2221 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
2224 /* Swab any part of val you need to here */
2225 if (KEY_IS(KEY_READ_ONLY)) {
2226 spin_lock(&req->rq_export->exp_lock);
2228 *exp_connect_flags_ptr(req->rq_export) |=
2231 *exp_connect_flags_ptr(req->rq_export) &=
2232 ~OBD_CONNECT_RDONLY;
2233 spin_unlock(&req->rq_export->exp_lock);
2234 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2235 struct changelog_setinfo *cs = val;
2237 if (vallen != sizeof(*cs)) {
2238 CERROR("%s: bad changelog_clear setinfo size %d\n",
2239 tgt_name(tsi->tsi_tgt), vallen);
2242 if (ptlrpc_req_need_swab(req)) {
2243 __swab64s(&cs->cs_recno);
2244 __swab32s(&cs->cs_id);
2247 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
2249 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
2251 obd_export_evict_by_nid(req->rq_export->exp_obd, val);
2258 static int mdt_readpage(struct tgt_session_info *tsi)
2260 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
2261 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
2262 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
2263 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
2264 struct mdt_body *repbody;
2270 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
2271 RETURN(err_serious(-ENOMEM));
2273 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
2274 if (repbody == NULL || reqbody == NULL)
2275 RETURN(err_serious(-EFAULT));
2278 * prepare @rdpg before calling lower layers and transfer itself. Here
2279 * reqbody->size contains offset of where to start to read and
2280 * reqbody->nlink contains number bytes to read.
2282 rdpg->rp_hash = reqbody->mbo_size;
2283 if (rdpg->rp_hash != reqbody->mbo_size) {
2284 CERROR("Invalid hash: %#llx != %#llx\n",
2285 rdpg->rp_hash, reqbody->mbo_size);
2289 rdpg->rp_attrs = reqbody->mbo_mode;
2290 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
2291 rdpg->rp_attrs |= LUDA_64BITHASH;
2292 rdpg->rp_count = min_t(unsigned int, reqbody->mbo_nlink,
2293 exp_max_brw_size(tsi->tsi_exp));
2294 rdpg->rp_npages = (rdpg->rp_count + PAGE_SIZE - 1) >>
2296 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
2297 if (rdpg->rp_pages == NULL)
2300 for (i = 0; i < rdpg->rp_npages; ++i) {
2301 rdpg->rp_pages[i] = alloc_page(GFP_NOFS);
2302 if (rdpg->rp_pages[i] == NULL)
2303 GOTO(free_rdpg, rc = -ENOMEM);
2306 /* call lower layers to fill allocated pages with directory data */
2307 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
2309 GOTO(free_rdpg, rc);
2311 /* send pages to client */
2312 rc = tgt_sendpage(tsi, rdpg, rc);
2317 for (i = 0; i < rdpg->rp_npages; i++)
2318 if (rdpg->rp_pages[i] != NULL)
2319 __free_page(rdpg->rp_pages[i]);
2320 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
2322 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
2328 static int mdt_fix_attr_ucred(struct mdt_thread_info *info, __u32 op)
2330 struct lu_ucred *uc = mdt_ucred_check(info);
2331 struct lu_attr *attr = &info->mti_attr.ma_attr;
2336 if (op != REINT_SETATTR) {
2337 if ((attr->la_valid & LA_UID) && (attr->la_uid != -1))
2338 attr->la_uid = uc->uc_fsuid;
2339 /* for S_ISGID, inherit gid from his parent, such work will be
2340 * done in cmm/mdd layer, here set all cases as uc->uc_fsgid. */
2341 if ((attr->la_valid & LA_GID) && (attr->la_gid != -1))
2342 attr->la_gid = uc->uc_fsgid;
2348 static inline bool mdt_is_readonly_open(struct mdt_thread_info *info, __u32 op)
2350 return op == REINT_OPEN &&
2351 !(info->mti_spec.sp_cr_flags & (MDS_FMODE_WRITE | MDS_OPEN_CREAT));
2354 static void mdt_preset_secctx_size(struct mdt_thread_info *info)
2356 struct req_capsule *pill = info->mti_pill;
2358 if (req_capsule_has_field(pill, &RMF_FILE_SECCTX,
2360 req_capsule_has_field(pill, &RMF_FILE_SECCTX_NAME,
2362 if (req_capsule_get_size(pill, &RMF_FILE_SECCTX_NAME,
2364 /* pre-set size in server part with max size */
2365 req_capsule_set_size(pill, &RMF_FILE_SECCTX,
2367 info->mti_mdt->mdt_max_ea_size);
2369 req_capsule_set_size(pill, &RMF_FILE_SECCTX,
2376 static int mdt_reint_internal(struct mdt_thread_info *info,
2377 struct mdt_lock_handle *lhc,
2380 struct req_capsule *pill = info->mti_pill;
2381 struct mdt_body *repbody;
2386 rc = mdt_reint_unpack(info, op);
2388 CERROR("Can't unpack reint, rc %d\n", rc);
2389 RETURN(err_serious(rc));
2393 /* check if the file system is set to readonly. O_RDONLY open
2394 * is still allowed even the file system is set to readonly mode */
2395 if (mdt_rdonly(info->mti_exp) && !mdt_is_readonly_open(info, op))
2396 RETURN(err_serious(-EROFS));
2398 /* for replay (no_create) lmm is not needed, client has it already */
2399 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2400 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2403 /* llog cookies are always 0, the field is kept for compatibility */
2404 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2405 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
2407 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
2408 * by default. If the target object has more ACL entries, then
2409 * enlarge the buffer when necessary. */
2410 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
2411 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
2412 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
2414 mdt_preset_secctx_size(info);
2416 rc = req_capsule_server_pack(pill);
2418 CERROR("Can't pack response, rc %d\n", rc);
2419 RETURN(err_serious(rc));
2422 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
2423 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
2425 repbody->mbo_eadatasize = 0;
2426 repbody->mbo_aclsize = 0;
2429 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
2431 /* for replay no cookkie / lmm need, because client have this already */
2432 if (info->mti_spec.no_create)
2433 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2434 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
2436 rc = mdt_init_ucred_reint(info);
2438 GOTO(out_shrink, rc);
2440 rc = mdt_fix_attr_ucred(info, op);
2442 GOTO(out_ucred, rc = err_serious(rc));
2444 rc = mdt_check_resent(info, mdt_reconstruct, lhc);
2446 GOTO(out_ucred, rc);
2447 } else if (rc == 1) {
2448 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
2449 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
2450 GOTO(out_ucred, rc);
2452 rc = mdt_reint_rec(info, lhc);
2455 mdt_exit_ucred(info);
2457 mdt_client_compatibility(info);
2459 rc2 = mdt_fix_reply(info);
2464 * Data-on-MDT optimization - read data along with OPEN and return it
2465 * in reply. Do that only if we have both DOM and LAYOUT locks.
2467 if (rc == 0 && op == REINT_OPEN && !req_is_replay(pill->rc_req) &&
2468 info->mti_attr.ma_lmm != NULL &&
2469 mdt_lmm_dom_entry(info->mti_attr.ma_lmm) == LMM_DOM_ONLY) {
2470 rc = mdt_dom_read_on_open(info, info->mti_mdt,
2477 static long mdt_reint_opcode(struct ptlrpc_request *req,
2478 const struct req_format **fmt)
2480 struct mdt_device *mdt;
2481 struct mdt_rec_reint *rec;
2484 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
2486 opc = rec->rr_opcode;
2487 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
2488 if (opc < REINT_MAX && fmt[opc] != NULL)
2489 req_capsule_extend(&req->rq_pill, fmt[opc]);
2491 mdt = mdt_exp2dev(req->rq_export);
2492 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
2493 " rc = %d\n", req->rq_export->exp_obd->obd_name,
2494 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
2495 opc = err_serious(-EFAULT);
2498 opc = err_serious(-EFAULT);
2503 static int mdt_reint(struct tgt_session_info *tsi)
2507 static const struct req_format *reint_fmts[REINT_MAX] = {
2508 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
2509 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
2510 [REINT_LINK] = &RQF_MDS_REINT_LINK,
2511 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
2512 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
2513 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
2514 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
2515 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
2516 [REINT_MIGRATE] = &RQF_MDS_REINT_MIGRATE,
2517 [REINT_RESYNC] = &RQF_MDS_REINT_RESYNC,
2522 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
2524 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2526 * No lock possible here from client to pass it to reint code
2529 rc = mdt_reint_internal(info, NULL, opc);
2530 mdt_thread_info_fini(info);
2535 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
2539 /* this should sync the whole device */
2540 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
2542 struct dt_device *dt = mdt->mdt_bottom;
2546 rc = dt->dd_ops->dt_sync(env, dt);
2550 /* this should sync this object */
2551 static int mdt_object_sync(const struct lu_env *env, struct obd_export *exp,
2552 struct mdt_object *mo)
2558 if (!mdt_object_exists(mo)) {
2559 CWARN("%s: non existing object "DFID": rc = %d\n",
2560 exp->exp_obd->obd_name, PFID(mdt_object_fid(mo)),
2565 if (S_ISREG(lu_object_attr(&mo->mot_obj))) {
2566 struct lu_target *tgt = tgt_ses_info(env)->tsi_tgt;
2567 dt_obj_version_t version;
2569 version = dt_version_get(env, mdt_obj2dt(mo));
2570 if (version > tgt->lut_obd->obd_last_committed)
2571 rc = mo_object_sync(env, mdt_object_child(mo));
2573 rc = mo_object_sync(env, mdt_object_child(mo));
2579 static int mdt_sync(struct tgt_session_info *tsi)
2581 struct ptlrpc_request *req = tgt_ses_req(tsi);
2582 struct req_capsule *pill = tsi->tsi_pill;
2583 struct mdt_body *body;
2588 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
2589 RETURN(err_serious(-ENOMEM));
2591 if (fid_seq(&tsi->tsi_mdt_body->mbo_fid1) == 0) {
2592 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
2594 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2596 if (unlikely(info->mti_object == NULL))
2599 /* sync an object */
2600 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp,
2603 const struct lu_fid *fid;
2604 struct lu_attr *la = &info->mti_attr.ma_attr;
2606 info->mti_attr.ma_need = MA_INODE;
2607 info->mti_attr.ma_valid = 0;
2608 rc = mdt_attr_get_complex(info, info->mti_object,
2611 body = req_capsule_server_get(pill,
2613 fid = mdt_object_fid(info->mti_object);
2614 mdt_pack_attr2body(info, body, la, fid);
2617 mdt_thread_info_fini(info);
2620 mdt_counter_incr(req, LPROC_MDT_SYNC);
2625 static int mdt_data_sync(struct tgt_session_info *tsi)
2627 struct mdt_thread_info *info;
2628 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2629 struct ost_body *body = tsi->tsi_ost_body;
2630 struct ost_body *repbody;
2631 struct mdt_object *mo = NULL;
2637 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
2639 /* if no fid is specified then do nothing,
2640 * device sync is done via MDS_SYNC */
2641 if (fid_is_zero(&tsi->tsi_fid))
2644 mo = mdt_object_find(tsi->tsi_env, mdt, &tsi->tsi_fid);
2646 RETURN(PTR_ERR(mo));
2648 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp, mo);
2652 repbody->oa.o_oi = body->oa.o_oi;
2653 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
2655 info = tsi2mdt_info(tsi);
2656 ma = &info->mti_attr;
2657 ma->ma_need = MA_INODE;
2659 rc = mdt_attr_get_complex(info, mo, ma);
2661 obdo_from_la(&repbody->oa, &ma->ma_attr, VALID_FLAGS);
2664 mdt_thread_info_fini(info);
2669 mdt_object_put(tsi->tsi_env, mo);
2674 * Handle quota control requests to consult current usage/limit, but also
2675 * to configure quota enforcement
2677 static int mdt_quotactl(struct tgt_session_info *tsi)
2679 struct obd_export *exp = tsi->tsi_exp;
2680 struct req_capsule *pill = tsi->tsi_pill;
2681 struct obd_quotactl *oqctl, *repoqc;
2683 struct mdt_device *mdt = mdt_exp2dev(exp);
2684 struct lu_device *qmt = mdt->mdt_qmt_dev;
2685 struct lu_nodemap *nodemap;
2688 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
2690 RETURN(err_serious(-EPROTO));
2692 rc = req_capsule_server_pack(pill);
2694 RETURN(err_serious(rc));
2696 nodemap = nodemap_get_from_exp(exp);
2697 if (IS_ERR(nodemap))
2698 RETURN(PTR_ERR(nodemap));
2700 switch (oqctl->qc_cmd) {
2701 /* master quotactl */
2704 case LUSTRE_Q_SETDEFAULT:
2705 if (!nodemap_can_setquota(nodemap))
2706 GOTO(out_nodemap, rc = -EPERM);
2710 case LUSTRE_Q_GETDEFAULT:
2712 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2713 /* slave quotactl */
2719 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2720 GOTO(out_nodemap, rc = -EFAULT);
2724 switch (oqctl->qc_type) {
2726 id = nodemap_map_id(nodemap, NODEMAP_UID,
2727 NODEMAP_CLIENT_TO_FS, id);
2730 id = nodemap_map_id(nodemap, NODEMAP_GID,
2731 NODEMAP_CLIENT_TO_FS, id);
2734 /* todo: check/map project id */
2738 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2740 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
2742 GOTO(out_nodemap, rc = err_serious(-EFAULT));
2744 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA)
2745 barrier_exit(tsi->tsi_tgt->lut_bottom);
2747 if (oqctl->qc_id != id)
2748 swap(oqctl->qc_id, id);
2750 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA) {
2751 if (unlikely(!barrier_entry(tsi->tsi_tgt->lut_bottom)))
2752 RETURN(-EINPROGRESS);
2755 switch (oqctl->qc_cmd) {
2761 case LUSTRE_Q_SETDEFAULT:
2762 case LUSTRE_Q_GETDEFAULT:
2763 /* forward quotactl request to QMT */
2764 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
2769 /* slave quotactl */
2770 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
2775 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2776 GOTO(out_nodemap, rc = -EFAULT);
2779 if (oqctl->qc_id != id)
2780 swap(oqctl->qc_id, id);
2787 nodemap_putref(nodemap);
2792 /** clone llog ctxt from child (mdd)
2793 * This allows remote llog (replicator) access.
2794 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2795 * context was originally set up, or we can handle them directly.
2796 * I choose the latter, but that means I need any llog
2797 * contexts set up by child to be accessable by the mdt. So we clone the
2798 * context into our context list here.
2800 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2803 struct md_device *next = mdt->mdt_child;
2804 struct llog_ctxt *ctxt;
2807 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2810 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2811 if (rc || ctxt == NULL) {
2815 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2817 CERROR("Can't set mdt ctxt %d\n", rc);
2822 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2823 struct mdt_device *mdt, int idx)
2825 struct llog_ctxt *ctxt;
2827 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2830 /* Put once for the get we just did, and once for the clone */
2831 llog_ctxt_put(ctxt);
2832 llog_ctxt_put(ctxt);
2837 * sec context handlers
2839 static int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
2841 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2847 * quota request handlers
2849 static int mdt_quota_dqacq(struct tgt_session_info *tsi)
2851 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2852 struct lu_device *qmt = mdt->mdt_qmt_dev;
2857 RETURN(err_serious(-EOPNOTSUPP));
2859 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
2863 struct mdt_object *mdt_object_new(const struct lu_env *env,
2864 struct mdt_device *d,
2865 const struct lu_fid *f)
2867 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2868 struct lu_object *o;
2869 struct mdt_object *m;
2872 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2873 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
2874 if (unlikely(IS_ERR(o)))
2875 m = (struct mdt_object *)o;
2881 struct mdt_object *mdt_object_find(const struct lu_env *env,
2882 struct mdt_device *d,
2883 const struct lu_fid *f)
2885 struct lu_object *o;
2886 struct mdt_object *m;
2889 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2890 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
2891 if (unlikely(IS_ERR(o)))
2892 m = (struct mdt_object *)o;
2900 * Asyncronous commit for mdt device.
2902 * Pass asynchonous commit call down the MDS stack.
2904 * \param env environment
2905 * \param mdt the mdt device
2907 static void mdt_device_commit_async(const struct lu_env *env,
2908 struct mdt_device *mdt)
2910 struct dt_device *dt = mdt->mdt_bottom;
2914 rc = dt->dd_ops->dt_commit_async(env, dt);
2915 if (unlikely(rc != 0))
2916 CWARN("%s: async commit start failed: rc = %d\n",
2917 mdt_obd_name(mdt), rc);
2918 atomic_inc(&mdt->mdt_async_commit_count);
2923 * Mark the lock as "synchonous".
2925 * Mark the lock to deffer transaction commit to the unlock time.
2927 * \param lock the lock to mark as "synchonous"
2929 * \see mdt_is_lock_sync
2930 * \see mdt_save_lock
2932 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2934 lock->l_ast_data = (void*)1;
2938 * Check whehter the lock "synchonous" or not.
2940 * \param lock the lock to check
2941 * \retval 1 the lock is "synchonous"
2942 * \retval 0 the lock isn't "synchronous"
2944 * \see mdt_set_lock_sync
2945 * \see mdt_save_lock
2947 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2949 return lock->l_ast_data != NULL;
2953 * Blocking AST for mdt locks.
2955 * Starts transaction commit if in case of COS lock conflict or
2956 * deffers such a commit to the mdt_save_lock.
2958 * \param lock the lock which blocks a request or cancelling lock
2959 * \param desc unused
2960 * \param data unused
2961 * \param flag indicates whether this cancelling or blocking callback
2963 * \see ldlm_blocking_ast_nocheck
2965 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2966 void *data, int flag)
2968 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2969 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2970 struct ldlm_cb_set_arg *arg = data;
2971 bool commit_async = false;
2975 if (flag == LDLM_CB_CANCELING)
2978 lock_res_and_lock(lock);
2979 if (lock->l_blocking_ast != mdt_blocking_ast) {
2980 unlock_res_and_lock(lock);
2984 /* A blocking ast may be sent from ldlm_lock_decref_internal
2985 * when the last reference to a local lock was released and
2986 * during blocking event from ldlm_work_bl_ast_lock().
2987 * The 'data' parameter is l_ast_data in the first case and
2988 * callback arguments in the second one. Distinguish them by that.
2990 if (!data || data == lock->l_ast_data || !arg->bl_desc)
2991 goto skip_cos_checks;
2993 if (lock->l_req_mode & (LCK_PW | LCK_EX)) {
2994 if (mdt_cos_is_enabled(mdt)) {
2995 if (!arg->bl_desc->bl_same_client)
2996 mdt_set_lock_sync(lock);
2997 } else if (mdt_slc_is_enabled(mdt) &&
2998 arg->bl_desc->bl_cos_incompat) {
2999 mdt_set_lock_sync(lock);
3001 * we may do extra commit here, but there is a small
3002 * window to miss a commit: lock was unlocked (saved),
3003 * then a conflict lock queued and we come here, but
3004 * REP-ACK not received, so lock was not converted to
3006 * Fortunately this window is quite small, so the
3007 * extra commit should be rare (not to say distributed
3008 * operation is rare too).
3010 commit_async = true;
3012 } else if (lock->l_req_mode == LCK_COS) {
3013 commit_async = true;
3017 rc = ldlm_blocking_ast_nocheck(lock);
3022 rc = lu_env_init(&env, LCT_LOCAL);
3023 if (unlikely(rc != 0))
3024 CWARN("%s: lu_env initialization failed, cannot "
3025 "start asynchronous commit: rc = %d\n",
3028 mdt_device_commit_async(&env, mdt);
3035 * Blocking AST for cross-MDT lock
3037 * Discard lock from uncommitted_slc_locks and cancel it.
3039 * \param lock the lock which blocks a request or cancelling lock
3040 * \param desc unused
3041 * \param data unused
3042 * \param flag indicates whether this cancelling or blocking callback
3043 * \retval 0 on success
3044 * \retval negative number on error
3046 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
3047 void *data, int flag)
3053 case LDLM_CB_BLOCKING: {
3054 struct lustre_handle lockh;
3056 ldlm_lock2handle(lock, &lockh);
3057 rc = ldlm_cli_cancel(&lockh,
3058 ldlm_is_atomic_cb(lock) ? 0 : LCF_ASYNC);
3060 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
3065 case LDLM_CB_CANCELING: {
3066 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
3067 struct mdt_device *mdt =
3068 mdt_dev(obd->obd_lu_dev->ld_site->ls_top_dev);
3070 LDLM_DEBUG(lock, "Revoke remote lock\n");
3072 /* discard slc lock here so that it can be cleaned anytime,
3073 * especially for cleanup_resource() */
3074 tgt_discard_slc_lock(&mdt->mdt_lut, lock);
3076 /* once we cache lock, l_ast_data is set to mdt_object */
3077 if (lock->l_ast_data != NULL) {
3078 struct mdt_object *mo = lock->l_ast_data;
3081 rc = lu_env_init(&env, LCT_MD_THREAD);
3082 if (unlikely(rc != 0)) {
3083 CWARN("%s: lu_env initialization failed, object"
3084 "%p "DFID" is leaked!\n",
3086 PFID(mdt_object_fid(mo)));
3090 if (lock->l_policy_data.l_inodebits.bits &
3091 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)) {
3092 rc = mo_invalidate(&env, mdt_object_child(mo));
3093 mo->mot_cache_attr = 0;
3095 mdt_object_put(&env, mo);
3107 int mdt_check_resent_lock(struct mdt_thread_info *info,
3108 struct mdt_object *mo,
3109 struct mdt_lock_handle *lhc)
3111 /* the lock might already be gotten in ldlm_handle_enqueue() */
3112 if (unlikely(lustre_handle_is_used(&lhc->mlh_reg_lh))) {
3113 struct ptlrpc_request *req = mdt_info_req(info);
3114 struct ldlm_lock *lock;
3116 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
3117 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
3119 /* Lock is pinned by ldlm_handle_enqueue0() as it is
3120 * a resend case, however, it could be already destroyed
3121 * due to client eviction or a raced cancel RPC. */
3122 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx",
3123 lhc->mlh_reg_lh.cookie);
3127 if (!fid_res_name_eq(mdt_object_fid(mo),
3128 &lock->l_resource->lr_name)) {
3129 CWARN("%s: Although resent, but still not "
3130 "get child lock:"DFID"\n",
3131 info->mti_exp->exp_obd->obd_name,
3132 PFID(mdt_object_fid(mo)));
3133 LDLM_LOCK_PUT(lock);
3136 LDLM_LOCK_PUT(lock);
3142 static void mdt_remote_object_lock_created_cb(struct ldlm_lock *lock)
3144 mdt_object_get(NULL, lock->l_ast_data);
3147 int mdt_remote_object_lock_try(struct mdt_thread_info *mti,
3148 struct mdt_object *o, const struct lu_fid *fid,
3149 struct lustre_handle *lh, enum ldlm_mode mode,
3150 __u64 *ibits, __u64 trybits, bool cache)
3152 struct ldlm_enqueue_info *einfo = &mti->mti_remote_einfo;
3153 union ldlm_policy_data *policy = &mti->mti_policy;
3154 struct ldlm_res_id *res_id = &mti->mti_res_id;
3158 LASSERT(mdt_object_remote(o));
3160 fid_build_reg_res_name(fid, res_id);
3162 memset(einfo, 0, sizeof(*einfo));
3163 einfo->ei_type = LDLM_IBITS;
3164 einfo->ei_mode = mode;
3165 einfo->ei_cb_bl = mdt_remote_blocking_ast;
3166 einfo->ei_cb_cp = ldlm_completion_ast;
3167 einfo->ei_enq_slave = 0;
3168 einfo->ei_res_id = res_id;
3172 * if we cache lock, couple lock with mdt_object, so that object
3173 * can be easily found in lock ASTs.
3175 einfo->ei_cbdata = o;
3176 einfo->ei_cb_created = mdt_remote_object_lock_created_cb;
3179 memset(policy, 0, sizeof(*policy));
3180 policy->l_inodebits.bits = *ibits;
3181 policy->l_inodebits.try_bits = trybits;
3183 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
3186 /* Return successfully acquired bits to a caller */
3188 struct ldlm_lock *lock = ldlm_handle2lock(lh);
3191 *ibits = lock->l_policy_data.l_inodebits.bits;
3192 LDLM_LOCK_PUT(lock);
3197 int mdt_remote_object_lock(struct mdt_thread_info *mti, struct mdt_object *o,
3198 const struct lu_fid *fid, struct lustre_handle *lh,
3199 enum ldlm_mode mode, __u64 ibits, bool cache)
3201 return mdt_remote_object_lock_try(mti, o, fid, lh, mode, &ibits, 0,
3205 static int mdt_object_local_lock(struct mdt_thread_info *info,
3206 struct mdt_object *o,
3207 struct mdt_lock_handle *lh, __u64 *ibits,
3208 __u64 trybits, bool cos_incompat)
3210 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
3211 union ldlm_policy_data *policy = &info->mti_policy;
3212 struct ldlm_res_id *res_id = &info->mti_res_id;
3213 __u64 dlmflags = 0, *cookie = NULL;
3217 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3218 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3219 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
3220 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
3223 LASSERT(lh->mlh_reg_mode == LCK_PW ||
3224 lh->mlh_reg_mode == LCK_EX);
3225 dlmflags |= LDLM_FL_COS_INCOMPAT;
3226 } else if (mdt_cos_is_enabled(info->mti_mdt)) {
3227 dlmflags |= LDLM_FL_COS_ENABLED;
3230 /* Only enqueue LOOKUP lock for remote object */
3231 LASSERT(ergo(mdt_object_remote(o), *ibits == MDS_INODELOCK_LOOKUP));
3233 /* Lease lock are granted with LDLM_FL_CANCEL_ON_BLOCK */
3234 if (lh->mlh_type == MDT_REG_LOCK && lh->mlh_reg_mode == LCK_EX &&
3235 *ibits == MDS_INODELOCK_OPEN)
3236 dlmflags |= LDLM_FL_CANCEL_ON_BLOCK;
3238 if (lh->mlh_type == MDT_PDO_LOCK) {
3239 /* check for exists after object is locked */
3240 if (mdt_object_exists(o) == 0) {
3241 /* Non-existent object shouldn't have PDO lock */
3244 /* Non-dir object shouldn't have PDO lock */
3245 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
3250 fid_build_reg_res_name(mdt_object_fid(o), res_id);
3251 dlmflags |= LDLM_FL_ATOMIC_CB;
3254 cookie = &info->mti_exp->exp_handle.h_cookie;
3257 * Take PDO lock on whole directory and build correct @res_id for lock
3258 * on part of directory.
3260 if (lh->mlh_pdo_hash != 0) {
3261 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
3262 mdt_lock_pdo_mode(info, o, lh);
3263 if (lh->mlh_pdo_mode != LCK_NL) {
3265 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
3266 * is never going to be sent to client and we do not
3267 * want it slowed down due to possible cancels.
3269 policy->l_inodebits.bits =
3270 *ibits & MDS_INODELOCK_UPDATE;
3271 policy->l_inodebits.try_bits =
3272 trybits & MDS_INODELOCK_UPDATE;
3273 /* at least one of them should be set */
3274 LASSERT(policy->l_inodebits.bits |
3275 policy->l_inodebits.try_bits);
3276 rc = mdt_fid_lock(info->mti_env, ns, &lh->mlh_pdo_lh,
3277 lh->mlh_pdo_mode, policy, res_id,
3279 if (unlikely(rc != 0))
3280 GOTO(out_unlock, rc);
3284 * Finish res_id initializing by name hash marking part of
3285 * directory which is taking modification.
3287 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
3290 policy->l_inodebits.bits = *ibits;
3291 policy->l_inodebits.try_bits = trybits;
3294 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
3295 * going to be sent to client. If it is - mdt_intent_policy() path will
3296 * fix it up and turn FL_LOCAL flag off.
3298 rc = mdt_fid_lock(info->mti_env, ns, &lh->mlh_reg_lh, lh->mlh_reg_mode,
3299 policy, res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
3303 mdt_object_unlock(info, o, lh, 1);
3304 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
3305 lh->mlh_pdo_hash != 0 &&
3306 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
3307 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
3309 /* Return successfully acquired bits to a caller */
3311 struct ldlm_lock *lock = ldlm_handle2lock(&lh->mlh_reg_lh);
3314 *ibits = lock->l_policy_data.l_inodebits.bits;
3315 LDLM_LOCK_PUT(lock);
3321 mdt_object_lock_internal(struct mdt_thread_info *info, struct mdt_object *o,
3322 struct mdt_lock_handle *lh, __u64 *ibits,
3323 __u64 trybits, bool cos_incompat)
3325 struct mdt_lock_handle *local_lh = NULL;
3329 if (!mdt_object_remote(o)) {
3330 rc = mdt_object_local_lock(info, o, lh, ibits, trybits,
3335 /* XXX do not support PERM/LAYOUT/XATTR lock for remote object yet */
3336 *ibits &= ~(MDS_INODELOCK_PERM | MDS_INODELOCK_LAYOUT |
3337 MDS_INODELOCK_XATTR);
3339 /* Only enqueue LOOKUP lock for remote object */
3340 if (*ibits & MDS_INODELOCK_LOOKUP) {
3341 __u64 local = MDS_INODELOCK_LOOKUP;
3343 rc = mdt_object_local_lock(info, o, lh, &local, 0,
3351 if ((*ibits | trybits) & MDS_INODELOCK_UPDATE) {
3352 /* Sigh, PDO needs to enqueue 2 locks right now, but
3353 * enqueue RPC can only request 1 lock, to avoid extra
3354 * RPC, so it will instead enqueue EX lock for remote
3355 * object anyway XXX*/
3356 if (lh->mlh_type == MDT_PDO_LOCK &&
3357 lh->mlh_pdo_hash != 0) {
3358 CDEBUG(D_INFO, "%s: "DFID" convert PDO lock to"
3359 "EX lock.\n", mdt_obd_name(info->mti_mdt),
3360 PFID(mdt_object_fid(o)));
3361 lh->mlh_pdo_hash = 0;
3362 lh->mlh_rreg_mode = LCK_EX;
3363 lh->mlh_type = MDT_REG_LOCK;
3366 rc = mdt_remote_object_lock_try(info, o, mdt_object_fid(o),
3369 ibits, trybits, false);
3370 if (rc != ELDLM_OK) {
3371 if (local_lh != NULL)
3372 mdt_object_unlock(info, o, local_lh, rc);
3377 /* other components like LFSCK can use lockless access
3378 * and populate cache, so we better invalidate it */
3379 mo_invalidate(info->mti_env, mdt_object_child(o));
3384 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
3385 struct mdt_lock_handle *lh, __u64 ibits)
3387 return mdt_object_lock_internal(info, o, lh, &ibits, 0, false);
3390 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
3391 struct mdt_lock_handle *lh, __u64 ibits,
3394 LASSERT(lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX);
3395 return mdt_object_lock_internal(info, o, lh, &ibits, 0,
3399 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
3400 struct mdt_lock_handle *lh, __u64 *ibits,
3401 __u64 trybits, bool cos_incompat)
3403 bool trylock_only = *ibits == 0;
3406 LASSERT(!(*ibits & trybits));
3407 rc = mdt_object_lock_internal(info, o, lh, ibits, trybits,
3409 if (rc && trylock_only) { /* clear error for try ibits lock only */
3410 LASSERT(*ibits == 0);
3417 * Save a lock within request object.
3419 * Keep the lock referenced until whether client ACK or transaction
3420 * commit happens or release the lock immediately depending on input
3421 * parameters. If COS is ON, a write lock is converted to COS lock
3424 * \param info thead info object
3425 * \param h lock handle
3426 * \param mode lock mode
3427 * \param decref force immediate lock releasing
3429 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
3430 enum ldlm_mode mode, int decref)
3434 if (lustre_handle_is_used(h)) {
3435 if (decref || !info->mti_has_trans ||
3436 !(mode & (LCK_PW | LCK_EX))) {
3437 mdt_fid_unlock(h, mode);
3439 struct mdt_device *mdt = info->mti_mdt;
3440 struct ldlm_lock *lock = ldlm_handle2lock(h);
3441 struct ptlrpc_request *req = mdt_info_req(info);
3442 bool cos = mdt_cos_is_enabled(mdt);
3443 bool convert_lock = !cos && mdt_slc_is_enabled(mdt);
3445 LASSERTF(lock != NULL, "no lock for cookie %#llx\n",
3448 /* there is no request if mdt_object_unlock() is called
3449 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
3450 if (likely(req != NULL)) {
3451 LDLM_DEBUG(lock, "save lock request %p reply "
3452 "state %p transno %lld\n", req,
3453 req->rq_reply_state, req->rq_transno);
3455 ldlm_lock_mode_downgrade(lock, LCK_COS);
3458 if (req->rq_export->exp_disconnected)
3459 mdt_fid_unlock(h, mode);
3461 ptlrpc_save_lock(req, h, mode, cos,
3464 mdt_fid_unlock(h, mode);
3466 if (mdt_is_lock_sync(lock)) {
3467 CDEBUG(D_HA, "found sync-lock,"
3468 " async commit started\n");
3469 mdt_device_commit_async(info->mti_env,
3472 LDLM_LOCK_PUT(lock);
3481 * Save cross-MDT lock in uncommitted_slc_locks
3483 * Keep the lock referenced until transaction commit happens or release the lock
3484 * immediately depending on input parameters.
3486 * \param info thead info object
3487 * \param h lock handle
3488 * \param mode lock mode
3489 * \param decref force immediate lock releasing
3491 static void mdt_save_remote_lock(struct mdt_thread_info *info,
3492 struct mdt_object *o, struct lustre_handle *h,
3493 enum ldlm_mode mode, int decref)
3497 if (lustre_handle_is_used(h)) {
3498 struct ldlm_lock *lock = ldlm_handle2lock(h);
3501 (lock->l_policy_data.l_inodebits.bits &
3502 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)))
3503 mo_invalidate(info->mti_env, mdt_object_child(o));
3505 if (decref || !info->mti_has_trans ||
3506 !(mode & (LCK_PW | LCK_EX))) {
3507 ldlm_lock_decref_and_cancel(h, mode);
3508 LDLM_LOCK_PUT(lock);
3510 struct ptlrpc_request *req = mdt_info_req(info);
3512 LASSERT(req != NULL);
3513 tgt_save_slc_lock(&info->mti_mdt->mdt_lut, lock,
3515 ldlm_lock_decref(h, mode);
3524 * Unlock mdt object.
3526 * Immeditely release the regular lock and the PDO lock or save the
3527 * lock in request and keep them referenced until client ACK or
3528 * transaction commit.
3530 * \param info thread info object
3531 * \param o mdt object
3532 * \param lh mdt lock handle referencing regular and PDO locks
3533 * \param decref force immediate lock releasing
3535 * XXX o is not used and may be NULL, see hsm_cdt_request_completed().
3537 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
3538 struct mdt_lock_handle *lh, int decref)
3542 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
3543 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
3544 mdt_save_remote_lock(info, o, &lh->mlh_rreg_lh, lh->mlh_rreg_mode,
3550 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
3551 const struct lu_fid *f,
3552 struct mdt_lock_handle *lh,
3555 struct mdt_object *o;
3557 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
3561 rc = mdt_object_lock(info, o, lh, ibits);
3563 mdt_object_put(info->mti_env, o);
3570 void mdt_object_unlock_put(struct mdt_thread_info * info,
3571 struct mdt_object * o,
3572 struct mdt_lock_handle *lh,
3575 mdt_object_unlock(info, o, lh, decref);
3576 mdt_object_put(info->mti_env, o);
3580 * Generic code handling requests that have struct mdt_body passed in:
3582 * - extract mdt_body from request and save it in @info, if present;
3584 * - create lu_object, corresponding to the fid in mdt_body, and save it in
3587 * - if HAS_BODY flag is set for this request type check whether object
3588 * actually exists on storage (lu_object_exists()).
3591 static int mdt_body_unpack(struct mdt_thread_info *info,
3592 enum tgt_handler_flags flags)
3594 const struct mdt_body *body;
3595 struct mdt_object *obj;
3596 const struct lu_env *env;
3597 struct req_capsule *pill;
3601 env = info->mti_env;
3602 pill = info->mti_pill;
3604 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
3608 if (!(body->mbo_valid & OBD_MD_FLID))
3611 if (!fid_is_sane(&body->mbo_fid1)) {
3612 CERROR("Invalid fid: "DFID"\n", PFID(&body->mbo_fid1));
3616 obj = mdt_object_find(env, info->mti_mdt, &body->mbo_fid1);
3618 if ((flags & HAS_BODY) && !mdt_object_exists(obj)) {
3619 mdt_object_put(env, obj);
3622 info->mti_object = obj;
3631 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info,
3632 enum tgt_handler_flags flags)
3634 struct req_capsule *pill = info->mti_pill;
3639 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
3640 rc = mdt_body_unpack(info, flags);
3644 if (rc == 0 && (flags & HAS_REPLY)) {
3646 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
3647 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
3649 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
3650 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
3653 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
3654 * by default. If the target object has more ACL entries, then
3655 * enlarge the buffer when necessary. */
3656 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
3657 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
3658 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
3660 mdt_preset_secctx_size(info);
3662 rc = req_capsule_server_pack(pill);
3664 CWARN("%s: cannot pack response: rc = %d\n",
3665 mdt_obd_name(info->mti_mdt), rc);
3670 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
3672 lh->mlh_type = MDT_NUL_LOCK;
3673 lh->mlh_reg_lh.cookie = 0ull;
3674 lh->mlh_reg_mode = LCK_MINMODE;
3675 lh->mlh_pdo_lh.cookie = 0ull;
3676 lh->mlh_pdo_mode = LCK_MINMODE;
3677 lh->mlh_rreg_lh.cookie = 0ull;
3678 lh->mlh_rreg_mode = LCK_MINMODE;
3681 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
3683 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3684 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3688 * Initialize fields of struct mdt_thread_info. Other fields are left in
3689 * uninitialized state, because it's too expensive to zero out whole
3690 * mdt_thread_info (> 1K) on each request arrival.
3692 void mdt_thread_info_init(struct ptlrpc_request *req,
3693 struct mdt_thread_info *info)
3697 info->mti_pill = &req->rq_pill;
3700 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3701 mdt_lock_handle_init(&info->mti_lh[i]);
3703 /* mdt device: it can be NULL while CONNECT */
3704 if (req->rq_export) {
3705 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
3706 info->mti_exp = req->rq_export;
3708 info->mti_mdt = NULL;
3709 info->mti_env = req->rq_svc_thread->t_env;
3710 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
3712 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
3713 info->mti_big_buf = LU_BUF_NULL;
3714 info->mti_body = NULL;
3715 info->mti_object = NULL;
3716 info->mti_dlm_req = NULL;
3717 info->mti_has_trans = 0;
3718 info->mti_cross_ref = 0;
3719 info->mti_opdata = 0;
3720 info->mti_big_lmm_used = 0;
3721 info->mti_big_acl_used = 0;
3722 info->mti_som_valid = 0;
3724 info->mti_spec.no_create = 0;
3725 info->mti_spec.sp_rm_entry = 0;
3726 info->mti_spec.sp_permitted = 0;
3727 info->mti_spec.sp_migrate_close = 0;
3729 info->mti_spec.u.sp_ea.eadata = NULL;
3730 info->mti_spec.u.sp_ea.eadatalen = 0;
3733 void mdt_thread_info_fini(struct mdt_thread_info *info)
3737 if (info->mti_object != NULL) {
3738 mdt_object_put(info->mti_env, info->mti_object);
3739 info->mti_object = NULL;
3742 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3743 mdt_lock_handle_fini(&info->mti_lh[i]);
3744 info->mti_env = NULL;
3745 info->mti_pill = NULL;
3746 info->mti_exp = NULL;
3748 if (unlikely(info->mti_big_buf.lb_buf != NULL))
3749 lu_buf_free(&info->mti_big_buf);
3752 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
3754 struct mdt_thread_info *mti;
3756 mti = mdt_th_info(tsi->tsi_env);
3757 LASSERT(mti != NULL);
3759 mdt_thread_info_init(tgt_ses_req(tsi), mti);
3760 if (tsi->tsi_corpus != NULL) {
3761 mti->mti_object = mdt_obj(tsi->tsi_corpus);
3762 lu_object_get(tsi->tsi_corpus);
3764 mti->mti_body = tsi->tsi_mdt_body;
3765 mti->mti_dlm_req = tsi->tsi_dlm_req;
3770 static int mdt_tgt_connect(struct tgt_session_info *tsi)
3772 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_DELAY_CONDITIONAL) &&
3774 tsi2mdt_info(tsi)->mti_mdt->mdt_seq_site.ss_node_id) {
3775 set_current_state(TASK_UNINTERRUPTIBLE);
3776 schedule_timeout(cfs_time_seconds(3));
3779 return tgt_connect(tsi);
3782 static int mdt_intent_glimpse(enum ldlm_intent_flags it_opc,
3783 struct mdt_thread_info *info,
3784 struct ldlm_lock **lockp, __u64 flags)
3786 return mdt_glimpse_enqueue(info, info->mti_mdt->mdt_namespace,
3789 static int mdt_intent_brw(enum ldlm_intent_flags it_opc,
3790 struct mdt_thread_info *info,
3791 struct ldlm_lock **lockp, __u64 flags)
3793 return mdt_brw_enqueue(info, info->mti_mdt->mdt_namespace,
3797 int mdt_intent_lock_replace(struct mdt_thread_info *info,
3798 struct ldlm_lock **lockp,
3799 struct mdt_lock_handle *lh,
3800 __u64 flags, int result)
3802 struct ptlrpc_request *req = mdt_info_req(info);
3803 struct ldlm_lock *lock = *lockp;
3804 struct ldlm_lock *new_lock;
3806 /* If possible resent found a lock, @lh is set to its handle */
3807 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3809 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3810 lh->mlh_reg_lh.cookie = 0;
3814 if (new_lock == NULL && (flags & LDLM_FL_RESENT)) {
3815 /* Lock is pinned by ldlm_handle_enqueue0() as it is
3816 * a resend case, however, it could be already destroyed
3817 * due to client eviction or a raced cancel RPC. */
3818 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx\n",
3819 lh->mlh_reg_lh.cookie);
3820 lh->mlh_reg_lh.cookie = 0;
3824 LASSERTF(new_lock != NULL,
3825 "lockh %#llx flags %#llx : rc = %d\n",
3826 lh->mlh_reg_lh.cookie, flags, result);
3829 * If we've already given this lock to a client once, then we should
3830 * have no readers or writers. Otherwise, we should have one reader
3831 * _or_ writer ref (which will be zeroed below) before returning the
3834 if (new_lock->l_export == req->rq_export) {
3835 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3837 LASSERT(new_lock->l_export == NULL);
3838 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3843 if (new_lock->l_export == req->rq_export) {
3845 * Already gave this to the client, which means that we
3846 * reconstructed a reply.
3848 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3851 LDLM_LOCK_RELEASE(new_lock);
3852 lh->mlh_reg_lh.cookie = 0;
3853 RETURN(ELDLM_LOCK_REPLACED);
3857 * Fixup the lock to be given to the client.
3859 lock_res_and_lock(new_lock);
3860 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3861 * possible blocking AST. */
3862 while (new_lock->l_readers > 0) {
3863 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3864 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3865 new_lock->l_readers--;
3867 while (new_lock->l_writers > 0) {
3868 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3869 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3870 new_lock->l_writers--;
3873 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3874 new_lock->l_blocking_ast = lock->l_blocking_ast;
3875 new_lock->l_completion_ast = lock->l_completion_ast;
3876 if (ldlm_has_dom(new_lock))
3877 new_lock->l_glimpse_ast = ldlm_server_glimpse_ast;
3878 new_lock->l_remote_handle = lock->l_remote_handle;
3879 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3881 unlock_res_and_lock(new_lock);
3883 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3884 &new_lock->l_remote_handle,
3885 &new_lock->l_exp_hash);
3887 LDLM_LOCK_RELEASE(new_lock);
3888 lh->mlh_reg_lh.cookie = 0;
3890 RETURN(ELDLM_LOCK_REPLACED);
3893 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3894 struct ldlm_lock *new_lock,
3895 struct mdt_lock_handle *lh, __u64 flags)
3897 struct ptlrpc_request *req = mdt_info_req(info);
3898 struct ldlm_request *dlmreq;
3900 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3903 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3905 /* Check if this is a resend case (MSG_RESENT is set on RPC) and a
3906 * lock was found by ldlm_handle_enqueue(); if so @lh must be
3908 if (flags & LDLM_FL_RESENT) {
3909 lh->mlh_reg_lh.cookie = new_lock->l_handle.h_cookie;
3910 lh->mlh_reg_mode = new_lock->l_granted_mode;
3912 LDLM_DEBUG(new_lock, "Restoring lock cookie");
3913 DEBUG_REQ(D_DLMTRACE, req, "restoring lock cookie %#llx",
3914 lh->mlh_reg_lh.cookie);
3919 * If the xid matches, then we know this is a resent request, and allow
3920 * it. (It's probably an OPEN, for which we don't send a lock.
3922 if (req_can_reconstruct(req, NULL))
3926 * This remote handle isn't enqueued, so we never received or processed
3927 * this request. Clear MSG_RESENT, because it can be handled like any
3928 * normal request now.
3930 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3932 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle %#llx",
3933 dlmreq->lock_handle[0].cookie);
3936 static int mdt_intent_getxattr(enum ldlm_intent_flags it_opc,
3937 struct mdt_thread_info *info,
3938 struct ldlm_lock **lockp,
3941 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3942 struct ldlm_reply *ldlm_rep = NULL;
3947 * Initialize lhc->mlh_reg_lh either from a previously granted lock
3948 * (for the resend case) or a new lock. Below we will use it to
3949 * replace the original lock.
3951 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3952 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3953 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
3954 rc = mdt_object_lock(info, info->mti_object, lhc,
3955 MDS_INODELOCK_XATTR);
3960 rc = mdt_getxattr(info);
3962 if (mdt_info_req(info)->rq_repmsg != NULL)
3963 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3965 if (ldlm_rep == NULL ||
3966 OBD_FAIL_CHECK(OBD_FAIL_MDS_XATTR_REP)) {
3967 mdt_object_unlock(info, info->mti_object, lhc, 1);
3971 RETURN(err_serious(-EFAULT));
3974 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3976 /* This is left for interop instead of adding a new interop flag.
3978 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(3, 0, 0, 0)
3979 if (ldlm_rep->lock_policy_res2) {
3980 mdt_object_unlock(info, info->mti_object, lhc, 1);
3981 RETURN(ELDLM_LOCK_ABORTED);
3985 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3989 static int mdt_intent_getattr(enum ldlm_intent_flags it_opc,
3990 struct mdt_thread_info *info,
3991 struct ldlm_lock **lockp,
3994 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3996 struct ldlm_reply *ldlm_rep;
3997 struct mdt_body *reqbody;
3998 struct mdt_body *repbody;
4002 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
4005 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
4008 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
4009 repbody->mbo_eadatasize = 0;
4010 repbody->mbo_aclsize = 0;
4014 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
4017 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
4021 CERROR("%s: unsupported intent %#x\n",
4022 mdt_obd_name(info->mti_mdt), (unsigned int)it_opc);
4023 GOTO(out_shrink, rc = -EINVAL);
4026 rc = mdt_init_ucred_intent_getattr(info, reqbody);
4028 GOTO(out_shrink, rc);
4030 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4031 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
4033 /* Get lock from request for possible resent case. */
4034 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4036 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
4037 ldlm_rep->lock_policy_res2 = clear_serious(rc);
4039 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
4040 ldlm_rep->lock_policy_res2 = 0;
4041 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
4042 ldlm_rep->lock_policy_res2) {
4043 lhc->mlh_reg_lh.cookie = 0ull;
4044 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
4047 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4050 mdt_exit_ucred(info);
4052 mdt_client_compatibility(info);
4053 rc2 = mdt_fix_reply(info);
4059 static int mdt_intent_layout(enum ldlm_intent_flags it_opc,
4060 struct mdt_thread_info *info,
4061 struct ldlm_lock **lockp,
4064 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_LAYOUT];
4065 struct md_layout_change layout = { .mlc_opc = MD_LAYOUT_NOP };
4066 struct layout_intent *intent;
4067 struct lu_fid *fid = &info->mti_tmp_fid2;
4068 struct mdt_object *obj = NULL;
4069 int layout_size = 0;
4073 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
4075 intent = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
4079 CDEBUG(D_INFO, DFID "got layout change request from client: "
4080 "opc:%u flags:%#x extent "DEXT"\n",
4081 PFID(fid), intent->li_opc, intent->li_flags,
4082 PEXT(&intent->li_extent));
4084 switch (intent->li_opc) {
4085 case LAYOUT_INTENT_TRUNC:
4086 case LAYOUT_INTENT_WRITE:
4087 layout.mlc_opc = MD_LAYOUT_WRITE;
4088 layout.mlc_intent = intent;
4090 case LAYOUT_INTENT_ACCESS:
4092 case LAYOUT_INTENT_READ:
4093 case LAYOUT_INTENT_GLIMPSE:
4094 case LAYOUT_INTENT_RELEASE:
4095 case LAYOUT_INTENT_RESTORE:
4096 CERROR("%s: Unsupported layout intent opc %d\n",
4097 mdt_obd_name(info->mti_mdt), intent->li_opc);
4101 CERROR("%s: Unknown layout intent opc %d\n",
4102 mdt_obd_name(info->mti_mdt), intent->li_opc);
4109 /* Get lock from request for possible resent case. */
4110 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4112 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
4114 GOTO(out, rc = PTR_ERR(obj));
4117 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
4118 /* if layout is going to be changed don't use the current EA
4119 * size but the maximum one. That buffer will be shrinked
4120 * to the actual size in req_capsule_shrink() before reply.
4122 if (layout.mlc_opc == MD_LAYOUT_WRITE) {
4123 layout_size = info->mti_mdt->mdt_max_mdsize;
4125 layout_size = mdt_attr_get_eabuf_size(info, obj);
4126 if (layout_size < 0)
4127 GOTO(out_obj, rc = layout_size);
4129 if (layout_size > info->mti_mdt->mdt_max_mdsize)
4130 info->mti_mdt->mdt_max_mdsize = layout_size;
4132 CDEBUG(D_INFO, "%s: layout_size %d\n",
4133 mdt_obd_name(info->mti_mdt), layout_size);
4137 * set reply buffer size, so that ldlm_handle_enqueue0()->
4138 * ldlm_lvbo_fill() will fill the reply buffer with lovea.
4140 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
4141 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
4143 rc = req_capsule_server_pack(info->mti_pill);
4148 if (layout.mlc_opc != MD_LAYOUT_NOP) {
4149 struct lu_buf *buf = &layout.mlc_buf;
4152 * mdt_layout_change is a reint operation, when the request
4153 * is resent, layout write shouldn't reprocess it again.
4155 rc = mdt_check_resent(info, mdt_reconstruct_generic, lhc);
4157 GOTO(out_obj, rc = rc < 0 ? rc : 0);
4160 * There is another resent case: the client's job has been
4161 * done by another client, referring lod_declare_layout_change
4162 * -EALREADY case, and it became a operation w/o transaction,
4163 * so we should not do the layout change, otherwise
4164 * mdt_layout_change() will try to cancel the granted server
4165 * CR lock whose remote counterpart is still in hold on the
4166 * client, and a deadlock ensues.
4168 rc = mdt_check_resent_lock(info, obj, lhc);
4174 if (unlikely(req_is_replay(mdt_info_req(info)))) {
4175 buf->lb_buf = req_capsule_client_get(info->mti_pill,
4177 buf->lb_len = req_capsule_get_size(info->mti_pill,
4178 &RMF_EADATA, RCL_CLIENT);
4180 * If it's a replay of layout write intent RPC, the
4181 * client has saved the extended lovea when
4182 * it get reply then.
4184 if (buf->lb_len > 0)
4185 mdt_fix_lov_magic(info, buf->lb_buf);
4188 * Instantiate some layout components, if @buf contains
4189 * lovea, then it's a replay of the layout intent write
4192 rc = mdt_layout_change(info, obj, &layout);
4197 mdt_object_put(info->mti_env, obj);
4199 if (rc == 0 && lustre_handle_is_used(&lhc->mlh_reg_lh))
4200 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4203 lhc->mlh_reg_lh.cookie = 0;
4208 static int mdt_intent_open(enum ldlm_intent_flags it_opc,
4209 struct mdt_thread_info *info,
4210 struct ldlm_lock **lockp,
4213 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
4214 struct ldlm_reply *rep = NULL;
4218 static const struct req_format *intent_fmts[REINT_MAX] = {
4219 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
4220 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
4225 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
4229 /* Get lock from request for possible resent case. */
4230 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
4232 rc = mdt_reint_internal(info, lhc, opc);
4234 /* Check whether the reply has been packed successfully. */
4235 if (mdt_info_req(info)->rq_repmsg != NULL)
4236 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4241 RETURN(err_serious(-EFAULT));
4244 /* MDC expects this in any case */
4246 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
4248 /* the open lock or the lock for cross-ref object should be
4249 * returned to the client */
4250 if (lustre_handle_is_used(&lhc->mlh_reg_lh) &&
4251 (rc == 0 || rc == -MDT_EREMOTE_OPEN)) {
4252 rep->lock_policy_res2 = 0;
4253 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
4257 rep->lock_policy_res2 = clear_serious(rc);
4259 if (rep->lock_policy_res2 == -ENOENT &&
4260 mdt_get_disposition(rep, DISP_LOOKUP_NEG) &&
4261 !mdt_get_disposition(rep, DISP_OPEN_CREATE))
4262 rep->lock_policy_res2 = 0;
4264 lhc->mlh_reg_lh.cookie = 0ull;
4265 if (rc == -ENOTCONN || rc == -ENODEV ||
4266 rc == -EOVERFLOW) { /**< if VBR failure then return error */
4268 * If it is the disconnect error (ENODEV & ENOCONN), the error
4269 * will be returned by rq_status, and client at ptlrpc layer
4270 * will detect this, then disconnect, reconnect the import
4271 * immediately, instead of impacting the following the rpc.
4276 * For other cases, the error will be returned by intent, and client
4277 * will retrieve the result from intent.
4279 RETURN(ELDLM_LOCK_ABORTED);
4282 static int mdt_intent_opc(enum ldlm_intent_flags it_opc,
4283 struct mdt_thread_info *info,
4284 struct ldlm_lock **lockp,
4285 u64 flags /* LDLM_FL_* */)
4287 struct req_capsule *pill = info->mti_pill;
4288 struct ptlrpc_request *req = mdt_info_req(info);
4289 const struct req_format *it_format;
4290 int (*it_handler)(enum ldlm_intent_flags,
4291 struct mdt_thread_info *,
4292 struct ldlm_lock **,
4294 enum tgt_handler_flags it_handler_flags = 0;
4295 struct ldlm_reply *rep;
4296 bool check_mdt_object = false;
4302 case IT_OPEN|IT_CREAT:
4304 * OCREAT is not a IS_MUTABLE request since the file may
4305 * already exist. We do the extra check of
4306 * OBD_CONNECT_RDONLY in mdt_reint_open() when we
4307 * really need to create the object.
4309 it_format = &RQF_LDLM_INTENT;
4310 it_handler = &mdt_intent_open;
4313 check_mdt_object = true;
4315 it_format = &RQF_LDLM_INTENT_GETATTR;
4316 it_handler = &mdt_intent_getattr;
4317 it_handler_flags = HAS_REPLY;
4320 check_mdt_object = true;
4321 it_format = &RQF_LDLM_INTENT_GETXATTR;
4322 it_handler = &mdt_intent_getxattr;
4323 it_handler_flags = HAS_BODY;
4326 it_format = &RQF_LDLM_INTENT_LAYOUT;
4327 it_handler = &mdt_intent_layout;
4330 it_format = &RQF_LDLM_INTENT;
4331 it_handler = &mdt_intent_glimpse;
4334 it_format = &RQF_LDLM_INTENT;
4335 it_handler = &mdt_intent_brw;
4337 case IT_QUOTA_DQACQ:
4338 case IT_QUOTA_CONN: {
4339 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
4342 RETURN(-EOPNOTSUPP);
4344 if (mdt_rdonly(req->rq_export))
4347 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
4348 /* pass the request to quota master */
4349 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
4350 mdt_info_req(info), lockp,
4355 CERROR("%s: unknown intent code %#x\n",
4356 mdt_obd_name(info->mti_mdt), it_opc);
4360 req_capsule_extend(pill, it_format);
4362 rc = mdt_unpack_req_pack_rep(info, it_handler_flags);
4366 if (unlikely(info->mti_object == NULL && check_mdt_object))
4369 if (it_handler_flags & IS_MUTABLE && mdt_rdonly(req->rq_export))
4372 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_INTENT_DELAY, 10);
4374 /* execute policy */
4375 rc = (*it_handler)(it_opc, info, lockp, flags);
4377 /* Check whether the reply has been packed successfully. */
4378 if (req->rq_repmsg != NULL) {
4379 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4380 rep->lock_policy_res2 =
4381 ptlrpc_status_hton(rep->lock_policy_res2);
4387 static void mdt_ptlrpc_stats_update(struct ptlrpc_request *req,
4388 enum ldlm_intent_flags it_opc)
4390 struct lprocfs_stats *srv_stats = ptlrpc_req2svc(req)->srv_stats;
4392 /* update stats when IT code is known */
4393 if (srv_stats != NULL)
4394 lprocfs_counter_incr(srv_stats,
4395 PTLRPC_LAST_CNTR + (it_opc == IT_GLIMPSE ?
4396 LDLM_GLIMPSE_ENQUEUE : LDLM_IBITS_ENQUEUE));
4399 static int mdt_intent_policy(const struct lu_env *env,
4400 struct ldlm_namespace *ns,
4401 struct ldlm_lock **lockp,
4403 enum ldlm_mode mode,
4404 __u64 flags, void *data)
4406 struct tgt_session_info *tsi;
4407 struct mdt_thread_info *info;
4408 struct ptlrpc_request *req = req_cookie;
4409 struct ldlm_intent *it;
4410 struct req_capsule *pill;
4411 const struct ldlm_lock_desc *ldesc;
4416 LASSERT(req != NULL);
4418 tsi = tgt_ses_info(env);
4420 info = tsi2mdt_info(tsi);
4421 LASSERT(info != NULL);
4422 pill = info->mti_pill;
4423 LASSERT(pill->rc_req == req);
4424 ldesc = &info->mti_dlm_req->lock_desc;
4426 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
4427 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
4428 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
4430 mdt_ptlrpc_stats_update(req, it->opc);
4431 rc = mdt_intent_opc(it->opc, info, lockp, flags);
4435 /* Lock without inodebits makes no sense and will oops
4436 * later in ldlm. Let's check it now to see if we have
4437 * ibits corrupted somewhere in mdt_intent_opc().
4438 * The case for client miss to set ibits has been
4439 * processed by others. */
4440 LASSERT(ergo(ldesc->l_resource.lr_type == LDLM_IBITS,
4441 ldesc->l_policy_data.l_inodebits.bits != 0));
4443 rc = err_serious(-EFAULT);
4446 /* No intent was provided */
4447 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
4448 rc = req_capsule_server_pack(pill);
4450 rc = err_serious(rc);
4452 mdt_thread_info_fini(info);
4456 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
4458 struct seq_server_site *ss = mdt_seq_site(mdt);
4460 if (ss->ss_node_id == 0)
4463 if (ss->ss_client_seq != NULL) {
4464 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
4465 ss->ss_client_seq->lcs_exp = NULL;
4468 if (ss->ss_server_fld != NULL) {
4469 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
4470 ss->ss_server_fld->lsf_control_exp = NULL;
4474 static void mdt_seq_fini_cli(struct mdt_device *mdt)
4476 struct seq_server_site *ss = mdt_seq_site(mdt);
4481 if (ss->ss_server_seq != NULL)
4482 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
4485 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
4487 mdt_seq_fini_cli(mdt);
4488 mdt_deregister_seq_exp(mdt);
4490 return seq_site_fini(env, mdt_seq_site(mdt));
4494 * It will retrieve its FLDB entries from MDT0, and it only happens
4495 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
4496 * and it needs to refresh FLDB from the MDT0.
4498 static int mdt_register_lwp_callback(void *data)
4501 struct mdt_device *mdt = data;
4502 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
4506 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
4508 rc = lu_env_init(&env, LCT_MD_THREAD);
4510 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
4514 /* Allocate new sequence now to avoid creating local transaction
4515 * in the normal transaction process */
4516 rc = seq_server_check_and_alloc_super(&env,
4517 mdt_seq_site(mdt)->ss_server_seq);
4522 rc = fld_update_from_controller(&env, fld);
4524 CERROR("%s: cannot update controller: rc = %d\n",
4525 mdt_obd_name(mdt), rc);
4534 static int mdt_register_seq_exp(struct mdt_device *mdt)
4536 struct seq_server_site *ss = mdt_seq_site(mdt);
4537 char *lwp_name = NULL;
4540 if (ss->ss_node_id == 0)
4543 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
4544 if (lwp_name == NULL)
4545 GOTO(out_free, rc = -ENOMEM);
4547 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
4551 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
4556 rc = lustre_register_lwp_item(lwp_name,
4557 &ss->ss_server_fld->lsf_control_exp,
4558 mdt_register_lwp_callback, mdt);
4560 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
4561 ss->ss_client_seq->lcs_exp = NULL;
4565 if (lwp_name != NULL)
4566 OBD_FREE(lwp_name, MAX_OBD_NAME);
4572 * Init client sequence manager which is used by local MDS to talk to sequence
4573 * controller on remote node.
4575 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
4577 struct seq_server_site *ss = mdt_seq_site(mdt);
4582 /* check if this is adding the first MDC and controller is not yet
4584 OBD_ALLOC_PTR(ss->ss_client_seq);
4585 if (ss->ss_client_seq == NULL)
4588 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
4589 if (prefix == NULL) {
4590 OBD_FREE_PTR(ss->ss_client_seq);
4591 ss->ss_client_seq = NULL;
4595 /* Note: seq_client_fini will be called in seq_site_fini */
4596 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
4597 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
4598 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
4600 OBD_FREE(prefix, MAX_OBD_NAME + 5);
4602 OBD_FREE_PTR(ss->ss_client_seq);
4603 ss->ss_client_seq = NULL;
4607 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
4612 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
4614 struct seq_server_site *ss;
4618 ss = mdt_seq_site(mdt);
4619 /* init sequence controller server(MDT0) */
4620 if (ss->ss_node_id == 0) {
4621 OBD_ALLOC_PTR(ss->ss_control_seq);
4622 if (ss->ss_control_seq == NULL)
4625 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
4626 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
4629 GOTO(out_seq_fini, rc);
4632 /* Init normal sequence server */
4633 OBD_ALLOC_PTR(ss->ss_server_seq);
4634 if (ss->ss_server_seq == NULL)
4635 GOTO(out_seq_fini, rc = -ENOMEM);
4637 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
4638 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
4640 GOTO(out_seq_fini, rc);
4642 /* init seq client for seq server to talk to seq controller(MDT0) */
4643 rc = mdt_seq_init_cli(env, mdt);
4645 GOTO(out_seq_fini, rc);
4647 if (ss->ss_node_id != 0)
4648 /* register controller export through lwp */
4649 rc = mdt_register_seq_exp(mdt);
4654 mdt_seq_fini(env, mdt);
4662 static int mdt_fld_fini(const struct lu_env *env,
4663 struct mdt_device *m)
4665 struct seq_server_site *ss = mdt_seq_site(m);
4668 if (ss && ss->ss_server_fld) {
4669 fld_server_fini(env, ss->ss_server_fld);
4670 OBD_FREE_PTR(ss->ss_server_fld);
4671 ss->ss_server_fld = NULL;
4677 static int mdt_fld_init(const struct lu_env *env,
4679 struct mdt_device *m)
4681 struct seq_server_site *ss;
4685 ss = mdt_seq_site(m);
4687 OBD_ALLOC_PTR(ss->ss_server_fld);
4688 if (ss->ss_server_fld == NULL)
4689 RETURN(rc = -ENOMEM);
4691 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
4694 OBD_FREE_PTR(ss->ss_server_fld);
4695 ss->ss_server_fld = NULL;
4702 static void mdt_stack_pre_fini(const struct lu_env *env,
4703 struct mdt_device *m, struct lu_device *top)
4705 struct lustre_cfg_bufs *bufs;
4706 struct lustre_cfg *lcfg;
4707 struct mdt_thread_info *info;
4712 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4713 LASSERT(info != NULL);
4715 bufs = &info->mti_u.bufs;
4717 LASSERT(m->mdt_child_exp);
4718 LASSERT(m->mdt_child_exp->exp_obd);
4720 /* process cleanup, pass mdt obd name to get obd umount flags */
4721 /* XXX: this is needed because all layers are referenced by
4722 * objects (some of them are pinned by osd, for example *
4723 * the proper solution should be a model where object used
4724 * by osd only doesn't have mdt/mdd slices -bzzz */
4725 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
4726 lustre_cfg_bufs_set_string(bufs, 1, NULL);
4727 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4730 lustre_cfg_init(lcfg, LCFG_PRE_CLEANUP, bufs);
4732 top->ld_ops->ldo_process_config(env, top, lcfg);
4733 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4737 static void mdt_stack_fini(const struct lu_env *env,
4738 struct mdt_device *m, struct lu_device *top)
4740 struct obd_device *obd = mdt2obd_dev(m);
4741 struct lustre_cfg_bufs *bufs;
4742 struct lustre_cfg *lcfg;
4743 struct mdt_thread_info *info;
4747 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4748 LASSERT(info != NULL);
4750 lu_dev_del_linkage(top->ld_site, top);
4752 lu_site_purge(env, top->ld_site, -1);
4754 bufs = &info->mti_u.bufs;
4755 /* process cleanup, pass mdt obd name to get obd umount flags */
4756 /* another purpose is to let all layers to release their objects */
4757 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
4762 lustre_cfg_bufs_set_string(bufs, 1, flags);
4763 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4766 lustre_cfg_init(lcfg, LCFG_CLEANUP, bufs);
4769 top->ld_ops->ldo_process_config(env, top, lcfg);
4770 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4772 lu_site_purge(env, top->ld_site, -1);
4774 m->mdt_child = NULL;
4775 m->mdt_bottom = NULL;
4777 obd_disconnect(m->mdt_child_exp);
4778 m->mdt_child_exp = NULL;
4780 obd_disconnect(m->mdt_bottom_exp);
4781 m->mdt_child_exp = NULL;
4784 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
4785 const char *next, struct obd_export **exp)
4787 struct obd_connect_data *data = NULL;
4788 struct obd_device *obd;
4792 OBD_ALLOC_PTR(data);
4794 GOTO(out, rc = -ENOMEM);
4796 obd = class_name2obd(next);
4798 CERROR("%s: can't locate next device: %s\n",
4799 mdt_obd_name(m), next);
4800 GOTO(out, rc = -ENOTCONN);
4803 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4804 data->ocd_version = LUSTRE_VERSION_CODE;
4806 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
4808 CERROR("%s: cannot connect to next dev %s (%d)\n",
4809 mdt_obd_name(m), next, rc);
4819 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
4820 struct lustre_cfg *cfg)
4822 char *dev = lustre_cfg_string(cfg, 0);
4823 int rc, name_size, uuid_size;
4824 char *name, *uuid, *p;
4825 struct lustre_cfg_bufs *bufs;
4826 struct lustre_cfg *lcfg;
4827 struct obd_device *obd;
4828 struct lustre_profile *lprof;
4829 struct lu_site *site;
4832 /* in 1.8 we had the only device in the stack - MDS.
4833 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
4834 * in 2.3 OSD is instantiated by obd_mount.c, so we need
4835 * to generate names and setup MDT, MDD. MDT will be using
4836 * generated name to connect to MDD. for MDD the next device
4837 * will be LOD with name taken from so called "profile" which
4838 * is generated by mount_option line
4840 * 1.8 MGS generates config. commands like this:
4841 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
4842 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
4843 * 2.0 MGS generates config. commands like this:
4844 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
4845 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4846 * 3:lustre-MDT0000-mdtlov 4:f
4848 * we generate MDD name from MDT one, just replacing T with D
4850 * after all the preparations, the logical equivalent will be
4851 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
4852 * 3:lustre-MDT0000-mdtlov 4:f
4853 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4854 * 3:lustre-MDD0000 4:f
4856 * notice we build the stack from down to top: MDD first, then MDT */
4858 name_size = MAX_OBD_NAME;
4859 uuid_size = MAX_OBD_NAME;
4861 OBD_ALLOC(name, name_size);
4862 OBD_ALLOC(uuid, uuid_size);
4863 if (name == NULL || uuid == NULL)
4864 GOTO(cleanup_mem, rc = -ENOMEM);
4866 OBD_ALLOC_PTR(bufs);
4868 GOTO(cleanup_mem, rc = -ENOMEM);
4871 p = strstr(name, "-MDT");
4873 GOTO(free_bufs, rc = -ENOMEM);
4876 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
4878 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4879 if (lprof == NULL || lprof->lp_dt == NULL) {
4880 CERROR("can't find the profile: %s\n",
4881 lustre_cfg_string(cfg, 0));
4882 GOTO(free_bufs, rc = -EINVAL);
4885 lustre_cfg_bufs_reset(bufs, name);
4886 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
4887 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4888 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4890 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4892 GOTO(put_profile, rc = -ENOMEM);
4893 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
4895 rc = class_attach(lcfg);
4897 GOTO(lcfg_cleanup, rc);
4899 obd = class_name2obd(name);
4901 CERROR("Can not find obd %s (%s in config)\n",
4902 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
4903 GOTO(lcfg_cleanup, rc = -EINVAL);
4906 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4908 lustre_cfg_bufs_reset(bufs, name);
4909 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4910 lustre_cfg_bufs_set_string(bufs, 2, dev);
4911 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4913 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4915 GOTO(class_detach, rc = -ENOMEM);
4916 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
4918 rc = class_setup(obd, lcfg);
4920 GOTO(class_detach, rc);
4922 /* connect to MDD we just setup */
4923 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
4925 GOTO(class_detach, rc);
4927 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
4929 LASSERT(mdt_lu_site(mdt) == NULL);
4930 mdt->mdt_lu_dev.ld_site = site;
4931 site->ls_top_dev = &mdt->mdt_lu_dev;
4932 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
4934 /* now connect to bottom OSD */
4935 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
4936 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
4938 GOTO(class_detach, rc);
4940 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
4942 rc = lu_env_refill((struct lu_env *)env);
4944 CERROR("Failure to refill session: '%d'\n", rc);
4946 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
4951 class_detach(obd, lcfg);
4953 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4955 class_put_profile(lprof);
4960 OBD_FREE(name, name_size);
4962 OBD_FREE(uuid, uuid_size);
4966 /* setup quota master target on MDT0 */
4967 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
4968 struct lustre_cfg *cfg)
4970 struct obd_device *obd;
4971 char *dev = lustre_cfg_string(cfg, 0);
4972 char *qmtname, *uuid, *p;
4973 struct lustre_cfg_bufs *bufs;
4974 struct lustre_cfg *lcfg;
4975 struct lustre_profile *lprof;
4976 struct obd_connect_data *data;
4980 LASSERT(mdt->mdt_qmt_exp == NULL);
4981 LASSERT(mdt->mdt_qmt_dev == NULL);
4983 /* quota master is on MDT0 only for now */
4984 if (mdt->mdt_seq_site.ss_node_id != 0)
4987 /* MGS generates config commands which look as follows:
4988 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4989 * 3:lustre-MDT0000-mdtlov 4:f
4991 * We generate the QMT name from the MDT one, just replacing MD with QM
4992 * after all the preparations, the logical equivalent will be:
4993 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
4994 * 3:lustre-MDT0000-osd 4:f */
4995 OBD_ALLOC(qmtname, MAX_OBD_NAME);
4996 OBD_ALLOC(uuid, UUID_MAX);
4997 OBD_ALLOC_PTR(bufs);
4998 OBD_ALLOC_PTR(data);
4999 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
5000 GOTO(cleanup_mem, rc = -ENOMEM);
5002 strcpy(qmtname, dev);
5003 p = strstr(qmtname, "-MDT");
5005 GOTO(cleanup_mem, rc = -ENOMEM);
5006 /* replace MD with QM */
5010 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
5012 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
5013 if (lprof == NULL || lprof->lp_dt == NULL) {
5014 CERROR("can't find profile for %s\n",
5015 lustre_cfg_string(cfg, 0));
5016 GOTO(cleanup_mem, rc = -EINVAL);
5019 lustre_cfg_bufs_reset(bufs, qmtname);
5020 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
5021 lustre_cfg_bufs_set_string(bufs, 2, uuid);
5022 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
5024 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5026 GOTO(put_profile, rc = -ENOMEM);
5027 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
5029 rc = class_attach(lcfg);
5031 GOTO(lcfg_cleanup, rc);
5033 obd = class_name2obd(qmtname);
5035 CERROR("Can not find obd %s (%s in config)\n", qmtname,
5036 lustre_cfg_string(cfg, 0));
5037 GOTO(lcfg_cleanup, rc = -EINVAL);
5040 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5042 lustre_cfg_bufs_reset(bufs, qmtname);
5043 lustre_cfg_bufs_set_string(bufs, 1, uuid);
5044 lustre_cfg_bufs_set_string(bufs, 2, dev);
5046 /* for quota, the next device should be the OSD device */
5047 lustre_cfg_bufs_set_string(bufs, 3,
5048 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
5050 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
5052 GOTO(class_detach, rc = -ENOMEM);
5053 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
5055 rc = class_setup(obd, lcfg);
5057 GOTO(class_detach, rc);
5059 mdt->mdt_qmt_dev = obd->obd_lu_dev;
5061 /* configure local quota objects */
5062 if (OBD_FAIL_CHECK(OBD_FAIL_QUOTA_INIT))
5065 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
5069 GOTO(class_cleanup, rc);
5071 /* connect to quota master target */
5072 data->ocd_connect_flags = OBD_CONNECT_VERSION;
5073 data->ocd_version = LUSTRE_VERSION_CODE;
5074 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
5077 CERROR("cannot connect to quota master device %s (%d)\n",
5079 GOTO(class_cleanup, rc);
5085 class_manual_cleanup(obd);
5086 mdt->mdt_qmt_dev = NULL;
5087 GOTO(lcfg_cleanup, rc);
5091 class_detach(obd, lcfg);
5093 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
5095 class_put_profile(lprof);
5100 OBD_FREE(qmtname, MAX_OBD_NAME);
5102 OBD_FREE(uuid, UUID_MAX);
5108 /* Shutdown quota master target associated with mdt */
5109 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
5113 if (mdt->mdt_qmt_exp == NULL)
5115 LASSERT(mdt->mdt_qmt_dev != NULL);
5117 /* the qmt automatically shuts down when the mdt disconnects */
5118 obd_disconnect(mdt->mdt_qmt_exp);
5119 mdt->mdt_qmt_exp = NULL;
5120 mdt->mdt_qmt_dev = NULL;
5124 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
5125 * for now. This will be removed along with converting rest of MDT code
5126 * to use tgt_session_info */
5127 static int mdt_tgt_getxattr(struct tgt_session_info *tsi)
5129 struct mdt_thread_info *info = tsi2mdt_info(tsi);
5132 if (unlikely(info->mti_object == NULL))
5135 rc = mdt_getxattr(info);
5137 mdt_thread_info_fini(info);
5141 #define OBD_FAIL_OST_READ_NET OBD_FAIL_OST_BRW_NET
5142 #define OBD_FAIL_OST_WRITE_NET OBD_FAIL_OST_BRW_NET
5143 #define OST_BRW_READ OST_READ
5144 #define OST_BRW_WRITE OST_WRITE
5146 static struct tgt_handler mdt_tgt_handlers[] = {
5147 TGT_RPC_HANDLER(MDS_FIRST_OPC,
5148 0, MDS_CONNECT, mdt_tgt_connect,
5149 &RQF_CONNECT, LUSTRE_OBD_VERSION),
5150 TGT_RPC_HANDLER(MDS_FIRST_OPC,
5151 0, MDS_DISCONNECT, tgt_disconnect,
5152 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
5153 TGT_RPC_HANDLER(MDS_FIRST_OPC,
5154 HAS_REPLY, MDS_SET_INFO, mdt_set_info,
5155 &RQF_OBD_SET_INFO, LUSTRE_MDS_VERSION),
5156 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
5157 TGT_MDT_HDL(HAS_REPLY, MDS_GET_ROOT, mdt_get_root),
5158 TGT_MDT_HDL(HAS_BODY, MDS_GETATTR, mdt_getattr),
5159 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_GETATTR_NAME,
5161 TGT_MDT_HDL(HAS_BODY, MDS_GETXATTR, mdt_tgt_getxattr),
5162 TGT_MDT_HDL(HAS_REPLY, MDS_STATFS, mdt_statfs),
5163 TGT_MDT_HDL(IS_MUTABLE, MDS_REINT, mdt_reint),
5164 TGT_MDT_HDL(HAS_BODY, MDS_CLOSE, mdt_close),
5165 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_READPAGE, mdt_readpage),
5166 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_SYNC, mdt_sync),
5167 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
5168 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_PROGRESS,
5170 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_CT_REGISTER,
5171 mdt_hsm_ct_register),
5172 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_CT_UNREGISTER,
5173 mdt_hsm_ct_unregister),
5174 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_STATE_GET,
5176 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_STATE_SET,
5178 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_ACTION, mdt_hsm_action),
5179 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_REQUEST,
5181 TGT_MDT_HDL(HAS_KEY | HAS_BODY | HAS_REPLY | IS_MUTABLE,
5184 TGT_MDT_HDL(IS_MUTABLE, MDS_RMFID, mdt_rmfid),
5187 static struct tgt_handler mdt_io_ops[] = {
5188 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY, OST_BRW_READ, tgt_brw_read,
5190 TGT_OST_HDL_HP(HAS_BODY | IS_MUTABLE, OST_BRW_WRITE, tgt_brw_write,
5192 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY | IS_MUTABLE,
5193 OST_PUNCH, mdt_punch_hdl,
5195 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_SYNC, mdt_data_sync),
5198 static struct tgt_handler mdt_sec_ctx_ops[] = {
5199 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
5200 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
5201 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
5204 static struct tgt_handler mdt_quota_ops[] = {
5205 TGT_QUOTA_HDL(HAS_REPLY, QUOTA_DQACQ, mdt_quota_dqacq),
5208 static struct tgt_opc_slice mdt_common_slice[] = {
5210 .tos_opc_start = MDS_FIRST_OPC,
5211 .tos_opc_end = MDS_LAST_OPC,
5212 .tos_hs = mdt_tgt_handlers
5215 .tos_opc_start = OBD_FIRST_OPC,
5216 .tos_opc_end = OBD_LAST_OPC,
5217 .tos_hs = tgt_obd_handlers
5220 .tos_opc_start = LDLM_FIRST_OPC,
5221 .tos_opc_end = LDLM_LAST_OPC,
5222 .tos_hs = tgt_dlm_handlers
5225 .tos_opc_start = SEC_FIRST_OPC,
5226 .tos_opc_end = SEC_LAST_OPC,
5227 .tos_hs = mdt_sec_ctx_ops
5230 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
5231 .tos_opc_end = OUT_UPDATE_LAST_OPC,
5232 .tos_hs = tgt_out_handlers
5235 .tos_opc_start = FLD_FIRST_OPC,
5236 .tos_opc_end = FLD_LAST_OPC,
5237 .tos_hs = fld_handlers
5240 .tos_opc_start = SEQ_FIRST_OPC,
5241 .tos_opc_end = SEQ_LAST_OPC,
5242 .tos_hs = seq_handlers
5245 .tos_opc_start = QUOTA_DQACQ,
5246 .tos_opc_end = QUOTA_LAST_OPC,
5247 .tos_hs = mdt_quota_ops
5250 .tos_opc_start = LLOG_FIRST_OPC,
5251 .tos_opc_end = LLOG_LAST_OPC,
5252 .tos_hs = tgt_llog_handlers
5255 .tos_opc_start = LFSCK_FIRST_OPC,
5256 .tos_opc_end = LFSCK_LAST_OPC,
5257 .tos_hs = tgt_lfsck_handlers
5260 .tos_opc_start = OST_FIRST_OPC,
5261 .tos_opc_end = OST_LAST_OPC,
5262 .tos_hs = mdt_io_ops
5269 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
5271 struct md_device *next = m->mdt_child;
5272 struct lu_device *d = &m->mdt_lu_dev;
5273 struct obd_device *obd = mdt2obd_dev(m);
5274 struct lfsck_stop stop;
5277 stop.ls_status = LS_PAUSED;
5279 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
5281 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
5282 ping_evictor_stop();
5284 /* Remove the HSM /proc entry so the coordinator cannot be
5285 * restarted by a user while it's shutting down.
5287 mdt_hsm_cdt_stop(m);
5289 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
5290 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
5292 if (m->mdt_namespace != NULL)
5293 ldlm_namespace_free_prior(m->mdt_namespace, NULL,
5294 d->ld_obd->obd_force);
5296 obd_exports_barrier(obd);
5297 obd_zombie_barrier();
5299 mdt_quota_fini(env, m);
5301 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
5303 /* Calling the cleanup functions in the same order as in the mdt_init0
5306 mdt_tunables_fini(m);
5308 target_recovery_fini(obd);
5309 upcall_cache_cleanup(m->mdt_identity_cache);
5310 m->mdt_identity_cache = NULL;
5312 mdt_fs_cleanup(env, m);
5314 tgt_fini(env, &m->mdt_lut);
5316 mdt_hsm_cdt_fini(m);
5318 if (m->mdt_los != NULL) {
5319 local_oid_storage_fini(env, m->mdt_los);
5323 if (m->mdt_namespace != NULL) {
5324 ldlm_namespace_free_post(m->mdt_namespace);
5325 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
5328 if (m->mdt_md_root != NULL) {
5329 mdt_object_put(env, m->mdt_md_root);
5330 m->mdt_md_root = NULL;
5333 mdt_seq_fini(env, m);
5335 mdt_fld_fini(env, m);
5340 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5342 LASSERT(atomic_read(&d->ld_ref) == 0);
5344 server_put_mount(mdt_obd_name(m), true);
5349 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
5351 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
5352 struct lu_device_type *ldt, struct lustre_cfg *cfg)
5354 const struct dt_device_param *dt_conf;
5355 struct mdt_thread_info *info;
5356 struct obd_device *obd;
5357 const char *dev = lustre_cfg_string(cfg, 0);
5358 const char *num = lustre_cfg_string(cfg, 2);
5359 struct tg_grants_data *tgd = &m->mdt_lut.lut_tgd;
5360 struct lustre_mount_info *lmi = NULL;
5361 struct lustre_sb_info *lsi;
5363 struct seq_server_site *ss_site;
5364 const char *identity_upcall = "NONE";
5365 struct md_device *next;
5372 lu_device_init(&m->mdt_lu_dev, ldt);
5374 * Environment (env) might be missing mdt_thread_key values at that
5375 * point, if device is allocated when mdt_thread_key is in QUIESCENT
5378 * Usually device allocation path doesn't use module key values, but
5379 * mdt has to do a lot of work here, so allocate key value.
5381 rc = lu_env_refill((struct lu_env *)env);
5385 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5386 LASSERT(info != NULL);
5388 obd = class_name2obd(dev);
5389 LASSERT(obd != NULL);
5391 m->mdt_max_mdsize = MAX_MD_SIZE_OLD;
5392 m->mdt_opts.mo_evict_tgt_nids = 1;
5393 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
5395 lmi = server_get_mount(dev);
5397 CERROR("Cannot get mount info for %s!\n", dev);
5400 lsi = s2lsi(lmi->lmi_sb);
5401 /* CMD is supported only in IAM mode */
5403 node_id = simple_strtol(num, NULL, 10);
5404 obd->u.obt.obt_magic = OBT_MAGIC;
5405 if (lsi->lsi_lmd != NULL &&
5406 lsi->lsi_lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
5407 m->mdt_skip_lfsck = 1;
5410 /* DoM files get IO lock at open by default */
5411 m->mdt_opts.mo_dom_lock = ALWAYS_DOM_LOCK_ON_OPEN;
5412 /* DoM files are read at open and data is packed in the reply */
5413 m->mdt_opts.mo_dom_read_open = 1;
5415 m->mdt_squash.rsi_uid = 0;
5416 m->mdt_squash.rsi_gid = 0;
5417 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
5418 spin_lock_init(&m->mdt_squash.rsi_lock);
5419 spin_lock_init(&m->mdt_lock);
5420 m->mdt_enable_remote_dir = 1;
5421 m->mdt_enable_striped_dir = 1;
5422 m->mdt_enable_dir_migration = 1;
5423 m->mdt_enable_remote_dir_gid = 0;
5424 m->mdt_enable_remote_rename = 1;
5426 atomic_set(&m->mdt_mds_mds_conns, 0);
5427 atomic_set(&m->mdt_async_commit_count, 0);
5429 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
5430 m->mdt_lu_dev.ld_obd = obd;
5431 /* Set this lu_device to obd for error handling purposes. */
5432 obd->obd_lu_dev = &m->mdt_lu_dev;
5434 /* init the stack */
5435 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
5437 CERROR("%s: Can't init device stack, rc %d\n",
5438 mdt_obd_name(m), rc);
5443 ss_site = mdt_seq_site(m);
5444 s->ld_seq_site = ss_site;
5447 /* set server index */
5448 ss_site->ss_node_id = node_id;
5450 /* failover is the default
5451 * FIXME: we do not failout mds0/mgs, which may cause some problems.
5452 * assumed whose ss_node_id == 0 XXX
5454 obd->obd_replayable = 1;
5455 /* No connection accepted until configurations will finish */
5456 obd->obd_no_conn = 1;
5458 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
5459 char *str = lustre_cfg_string(cfg, 4);
5460 if (strchr(str, 'n')) {
5461 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
5462 obd->obd_replayable = 0;
5466 rc = mdt_fld_init(env, mdt_obd_name(m), m);
5468 GOTO(err_fini_stack, rc);
5470 rc = mdt_seq_init(env, m);
5472 GOTO(err_fini_fld, rc);
5474 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
5475 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
5476 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
5477 LDLM_NAMESPACE_SERVER,
5478 LDLM_NAMESPACE_GREEDY,
5480 if (m->mdt_namespace == NULL)
5481 GOTO(err_fini_seq, rc = -ENOMEM);
5483 m->mdt_namespace->ns_lvbp = m;
5484 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
5486 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
5487 /* set obd_namespace for compatibility with old code */
5488 obd->obd_namespace = m->mdt_namespace;
5490 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
5491 OBD_FAIL_MDS_ALL_REQUEST_NET,
5492 OBD_FAIL_MDS_ALL_REPLY_NET);
5494 GOTO(err_free_ns, rc);
5496 /* Amount of available space excluded from granting and reserved
5497 * for metadata. It is in percentage and 50% is default value. */
5498 tgd->tgd_reserved_pcnt = 50;
5500 if (ONE_MB_BRW_SIZE < (1U << tgd->tgd_blockbits))
5501 m->mdt_brw_size = 1U << tgd->tgd_blockbits;
5503 m->mdt_brw_size = ONE_MB_BRW_SIZE;
5505 rc = mdt_fs_setup(env, m, obd, lsi);
5509 fid.f_seq = FID_SEQ_LOCAL_NAME;
5512 rc = local_oid_storage_init(env, m->mdt_bottom, &fid, &m->mdt_los);
5514 GOTO(err_fs_cleanup, rc);
5516 rc = mdt_hsm_cdt_init(m);
5518 CERROR("%s: error initializing coordinator, rc %d\n",
5519 mdt_obd_name(m), rc);
5520 GOTO(err_los_fini, rc);
5523 tgt_adapt_sptlrpc_conf(&m->mdt_lut);
5525 next = m->mdt_child;
5526 dt_conf = next->md_ops->mdo_dtconf_get(env, next);
5528 mntopts = dt_conf->ddp_mntopts;
5530 if (mntopts & MNTOPT_USERXATTR)
5531 m->mdt_opts.mo_user_xattr = 1;
5533 m->mdt_opts.mo_user_xattr = 0;
5535 m->mdt_max_ea_size = dt_conf->ddp_max_ea_size;
5537 if (mntopts & MNTOPT_ACL)
5538 m->mdt_opts.mo_acl = 1;
5540 m->mdt_opts.mo_acl = 0;
5542 /* XXX: to support suppgid for ACL, we enable identity_upcall
5543 * by default, otherwise, maybe got unexpected -EACCESS. */
5544 if (m->mdt_opts.mo_acl)
5545 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
5547 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
5549 &mdt_identity_upcall_cache_ops);
5550 if (IS_ERR(m->mdt_identity_cache)) {
5551 rc = PTR_ERR(m->mdt_identity_cache);
5552 m->mdt_identity_cache = NULL;
5553 GOTO(err_free_hsm, rc);
5556 rc = mdt_tunables_init(m, dev);
5558 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
5559 GOTO(err_recovery, rc);
5562 rc = mdt_quota_init(env, m, cfg);
5564 GOTO(err_procfs, rc);
5566 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
5567 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
5568 "mdt_ldlm_client", m->mdt_ldlm_client);
5570 ping_evictor_start();
5572 /* recovery will be started upon mdt_prepare()
5573 * when the whole stack is complete and ready
5574 * to serve the requests */
5576 /* Reduce the initial timeout on an MDS because it doesn't need such
5577 * a long timeout as an OST does. Adaptive timeouts will adjust this
5578 * value appropriately. */
5579 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
5580 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
5584 mdt_tunables_fini(m);
5586 upcall_cache_cleanup(m->mdt_identity_cache);
5587 m->mdt_identity_cache = NULL;
5589 mdt_hsm_cdt_fini(m);
5591 local_oid_storage_fini(env, m->mdt_los);
5594 mdt_fs_cleanup(env, m);
5596 /* keep recoverable clients */
5598 target_recovery_fini(obd);
5599 obd_exports_barrier(obd);
5600 obd_zombie_barrier();
5601 tgt_fini(env, &m->mdt_lut);
5603 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
5604 obd->obd_namespace = m->mdt_namespace = NULL;
5606 mdt_seq_fini(env, m);
5608 mdt_fld_fini(env, m);
5610 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5613 server_put_mount(dev, true);
5617 /* For interoperability, the left element is old parameter, the right one
5618 * is the new version of the parameter, if some parameter is deprecated,
5619 * the new version should be set as NULL. */
5620 static struct cfg_interop_param mdt_interop_param[] = {
5621 { "mdt.group_upcall", NULL },
5622 { "mdt.quota_type", NULL },
5623 { "mdd.quota_type", NULL },
5624 { "mdt.som", NULL },
5625 { "mdt.rootsquash", "mdt.root_squash" },
5626 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
5630 /* used by MGS to process specific configurations */
5631 static int mdt_process_config(const struct lu_env *env,
5632 struct lu_device *d, struct lustre_cfg *cfg)
5634 struct mdt_device *m = mdt_dev(d);
5635 struct md_device *md_next = m->mdt_child;
5636 struct lu_device *next = md2lu_dev(md_next);
5640 switch (cfg->lcfg_command) {
5642 struct obd_device *obd = d->ld_obd;
5643 /* For interoperability */
5644 struct cfg_interop_param *ptr = NULL;
5645 struct lustre_cfg *old_cfg = NULL;
5649 param = lustre_cfg_string(cfg, 1);
5650 if (param == NULL) {
5651 CERROR("param is empty\n");
5656 ptr = class_find_old_param(param, mdt_interop_param);
5658 if (ptr->new_param == NULL) {
5660 CWARN("For interoperability, skip this %s."
5661 " It is obsolete.\n", ptr->old_param);
5665 CWARN("Found old param %s, changed it to %s.\n",
5666 ptr->old_param, ptr->new_param);
5669 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
5676 count = class_modify_config(cfg, PARAM_MDT,
5677 &obd->obd_kset.kobj);
5679 struct coordinator *cdt = &m->mdt_coordinator;
5681 /* is it an HSM var ? */
5682 count = class_modify_config(cfg, PARAM_HSM,
5683 &cdt->cdt_hsm_kobj);
5685 /* we don't understand; pass it on */
5686 rc = next->ld_ops->ldo_process_config(env, next,
5689 rc = count > 0 ? 0 : count;
5691 rc = count > 0 ? 0 : count;
5695 OBD_FREE(cfg, lustre_cfg_len(cfg->lcfg_bufcount,
5696 cfg->lcfg_buflens));
5700 /* others are passed further */
5701 rc = next->ld_ops->ldo_process_config(env, next, cfg);
5707 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
5708 const struct lu_object_header *hdr,
5709 struct lu_device *d)
5711 struct mdt_object *mo;
5715 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
5717 struct lu_object *o;
5718 struct lu_object_header *h;
5721 h = &mo->mot_header;
5722 lu_object_header_init(h);
5723 lu_object_init(o, h, d);
5724 lu_object_add_top(h, o);
5725 o->lo_ops = &mdt_obj_ops;
5726 spin_lock_init(&mo->mot_write_lock);
5727 mutex_init(&mo->mot_som_mutex);
5728 mutex_init(&mo->mot_lov_mutex);
5729 init_rwsem(&mo->mot_dom_sem);
5730 init_rwsem(&mo->mot_open_sem);
5731 atomic_set(&mo->mot_open_count, 0);
5737 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
5738 const struct lu_object_conf *unused)
5740 struct mdt_device *d = mdt_dev(o->lo_dev);
5741 struct lu_device *under;
5742 struct lu_object *below;
5746 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
5747 PFID(lu_object_fid(o)));
5749 under = &d->mdt_child->md_lu_dev;
5750 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
5751 if (below != NULL) {
5752 lu_object_add(o, below);
5759 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
5761 struct mdt_object *mo = mdt_obj(o);
5762 struct lu_object_header *h;
5766 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
5767 PFID(lu_object_fid(o)));
5769 LASSERT(atomic_read(&mo->mot_open_count) == 0);
5770 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
5773 lu_object_header_fini(h);
5774 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
5779 static int mdt_object_print(const struct lu_env *env, void *cookie,
5780 lu_printer_t p, const struct lu_object *o)
5782 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
5784 return (*p)(env, cookie,
5785 LUSTRE_MDT_NAME"-object@%p(%s %s, writecount=%d)",
5786 mdto, mdto->mot_lov_created ? "lov_created" : "",
5787 mdto->mot_cache_attr ? "cache_attr" : "",
5788 mdto->mot_write_count);
5791 static int mdt_prepare(const struct lu_env *env,
5792 struct lu_device *pdev,
5793 struct lu_device *cdev)
5795 struct mdt_device *mdt = mdt_dev(cdev);
5796 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
5797 struct obd_device *obd = cdev->ld_obd;
5804 rc = next->ld_ops->ldo_prepare(env, cdev, next);
5808 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
5812 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
5816 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
5817 /* The LFSCK instance is registered just now, so it must be there when
5818 * register the namespace to such instance. */
5819 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
5821 if (mdt->mdt_seq_site.ss_node_id == 0) {
5822 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
5823 &mdt->mdt_md_root_fid);
5828 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
5830 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
5831 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
5832 LASSERT(obd->obd_no_conn);
5833 spin_lock(&obd->obd_dev_lock);
5834 obd->obd_no_conn = 0;
5835 spin_unlock(&obd->obd_dev_lock);
5837 if (obd->obd_recovering == 0)
5838 mdt_postrecov(env, mdt);
5843 const struct lu_device_operations mdt_lu_ops = {
5844 .ldo_object_alloc = mdt_object_alloc,
5845 .ldo_process_config = mdt_process_config,
5846 .ldo_prepare = mdt_prepare,
5849 static const struct lu_object_operations mdt_obj_ops = {
5850 .loo_object_init = mdt_object_init,
5851 .loo_object_free = mdt_object_free,
5852 .loo_object_print = mdt_object_print
5855 static int mdt_obd_set_info_async(const struct lu_env *env,
5856 struct obd_export *exp,
5857 __u32 keylen, void *key,
5858 __u32 vallen, void *val,
5859 struct ptlrpc_request_set *set)
5865 if (KEY_IS(KEY_SPTLRPC_CONF)) {
5866 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp));
5874 * Match client and server connection feature flags.
5876 * Compute the compatibility flags for a connection request based on
5877 * features mutually supported by client and server.
5879 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
5880 * must not be updated here, otherwise a partially initialized value may
5881 * be exposed. After the connection request is successfully processed,
5882 * the top-level MDT connect request handler atomically updates the export
5883 * connect flags from the obd_connect_data::ocd_connect_flags field of the
5884 * reply. \see mdt_connect().
5886 * Before 2.7.50 clients will send a struct obd_connect_data_v1 rather than a
5887 * full struct obd_connect_data. So care must be taken when accessing fields
5888 * that are not present in struct obd_connect_data_v1. See LU-16.
5890 * \param exp the obd_export associated with this client/target pair
5891 * \param mdt the target device for the connection
5892 * \param data stores data for this connect request
5895 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
5896 * \retval -EBADE client and server feature requirements are incompatible
5898 static int mdt_connect_internal(const struct lu_env *env,
5899 struct obd_export *exp,
5900 struct mdt_device *mdt,
5901 struct obd_connect_data *data, bool reconnect)
5903 const char *obd_name = mdt_obd_name(mdt);
5904 LASSERT(data != NULL);
5906 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
5908 if (mdt->mdt_bottom->dd_rdonly &&
5909 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
5910 !(data->ocd_connect_flags & OBD_CONNECT_RDONLY))
5913 if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
5914 data->ocd_connect_flags2 &= MDT_CONNECT_SUPPORTED2;
5916 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
5918 if (!mdt->mdt_opts.mo_acl)
5919 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
5921 if (!mdt->mdt_opts.mo_user_xattr)
5922 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
5924 if (OCD_HAS_FLAG(data, BRW_SIZE)) {
5925 data->ocd_brw_size = min(data->ocd_brw_size,
5927 if (data->ocd_brw_size == 0) {
5928 CERROR("%s: cli %s/%p ocd_connect_flags: %#llx "
5929 "ocd_version: %x ocd_grant: %d ocd_index: %u "
5930 "ocd_brw_size unexpectedly zero, network data "
5931 "corruption? Refusing to connect this client\n",
5932 obd_name, exp->exp_client_uuid.uuid,
5933 exp, data->ocd_connect_flags, data->ocd_version,
5934 data->ocd_grant, data->ocd_index);
5939 if (OCD_HAS_FLAG(data, GRANT_PARAM)) {
5940 struct dt_device_param *ddp = &mdt->mdt_lut.lut_dt_conf;
5942 /* client is reporting its page size, for future use */
5943 exp->exp_target_data.ted_pagebits = data->ocd_grant_blkbits;
5944 data->ocd_grant_blkbits = mdt->mdt_lut.lut_tgd.tgd_blockbits;
5945 /* ddp_inodespace may not be power-of-two value, eg. for ldiskfs
5946 * it's LDISKFS_DIR_REC_LEN(20) = 28. */
5947 data->ocd_grant_inobits = fls(ddp->ddp_inodespace - 1);
5948 /* ocd_grant_tax_kb is in 1K byte blocks */
5949 data->ocd_grant_tax_kb = ddp->ddp_extent_tax >> 10;
5950 data->ocd_grant_max_blks = ddp->ddp_max_extent_blks;
5953 /* Save connect_data we have so far because tgt_grant_connect()
5954 * uses it to calculate grant, and we want to save the client
5955 * version before it is overwritten by LUSTRE_VERSION_CODE. */
5956 exp->exp_connect_data = *data;
5957 if (OCD_HAS_FLAG(data, GRANT))
5958 tgt_grant_connect(env, exp, data, !reconnect);
5960 if (OCD_HAS_FLAG(data, MAXBYTES))
5961 data->ocd_maxbytes = mdt->mdt_lut.lut_dt_conf.ddp_maxbytes;
5963 /* NB: Disregard the rule against updating
5964 * exp_connect_data.ocd_connect_flags in this case, since
5965 * tgt_client_new() needs to know if this is a lightweight
5966 * connection, and it is safe to expose this flag before
5967 * connection processing completes. */
5968 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
5969 spin_lock(&exp->exp_lock);
5970 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
5971 spin_unlock(&exp->exp_lock);
5974 data->ocd_version = LUSTRE_VERSION_CODE;
5976 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
5977 CWARN("%s: MDS requires FID support, but client not\n",
5982 if (OCD_HAS_FLAG(data, PINGLESS)) {
5983 if (ptlrpc_pinger_suppress_pings()) {
5984 spin_lock(&exp->exp_obd->obd_dev_lock);
5985 list_del_init(&exp->exp_obd_chain_timed);
5986 spin_unlock(&exp->exp_obd->obd_dev_lock);
5988 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
5992 data->ocd_max_easize = mdt->mdt_max_ea_size;
5994 /* NB: Disregard the rule against updating
5995 * exp_connect_data.ocd_connect_flags in this case, since
5996 * tgt_client_new() needs to know if this is client supports
5997 * multiple modify RPCs, and it is safe to expose this flag before
5998 * connection processing completes. */
5999 if (data->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS) {
6000 data->ocd_maxmodrpcs = max_mod_rpcs_per_client;
6001 spin_lock(&exp->exp_lock);
6002 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_MULTIMODRPCS;
6003 spin_unlock(&exp->exp_lock);
6006 if (OCD_HAS_FLAG(data, CKSUM)) {
6007 __u32 cksum_types = data->ocd_cksum_types;
6009 /* The client set in ocd_cksum_types the checksum types it
6010 * supports. We have to mask off the algorithms that we don't
6012 data->ocd_cksum_types &=
6013 obd_cksum_types_supported_server(obd_name);
6015 if (unlikely(data->ocd_cksum_types == 0)) {
6016 CERROR("%s: Connect with checksum support but no "
6017 "ocd_cksum_types is set\n",
6018 exp->exp_obd->obd_name);
6022 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
6023 "%x\n", exp->exp_obd->obd_name, obd_export_nid2str(exp),
6024 cksum_types, data->ocd_cksum_types);
6026 /* This client does not support OBD_CONNECT_CKSUM
6027 * fall back to CRC32 */
6028 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
6029 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
6030 exp->exp_obd->obd_name, obd_export_nid2str(exp));
6036 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
6037 struct mdt_thread_info *info,
6038 struct mdt_file_data *mfd)
6040 struct lu_context ses;
6044 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
6049 lu_context_enter(&ses);
6051 mdt_ucred(info)->uc_valid = UCRED_OLD;
6052 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
6054 lu_context_exit(&ses);
6055 lu_context_fini(&ses);
6061 static int mdt_export_cleanup(struct obd_export *exp)
6063 struct list_head closing_list;
6064 struct mdt_export_data *med = &exp->exp_mdt_data;
6065 struct obd_device *obd = exp->exp_obd;
6066 struct mdt_device *mdt;
6067 struct mdt_thread_info *info;
6069 struct mdt_file_data *mfd, *n;
6073 INIT_LIST_HEAD(&closing_list);
6074 spin_lock(&med->med_open_lock);
6075 while (!list_empty(&med->med_open_head)) {
6076 struct list_head *tmp = med->med_open_head.next;
6077 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
6079 /* Remove mfd handle so it can't be found again.
6080 * We are consuming the mfd_list reference here. */
6081 class_handle_unhash(&mfd->mfd_open_handle);
6082 list_move_tail(&mfd->mfd_list, &closing_list);
6084 spin_unlock(&med->med_open_lock);
6085 mdt = mdt_dev(obd->obd_lu_dev);
6086 LASSERT(mdt != NULL);
6088 rc = lu_env_init(&env, LCT_MD_THREAD);
6092 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6093 LASSERT(info != NULL);
6094 memset(info, 0, sizeof *info);
6095 info->mti_env = &env;
6096 info->mti_mdt = mdt;
6097 info->mti_exp = exp;
6099 if (!list_empty(&closing_list)) {
6100 struct md_attr *ma = &info->mti_attr;
6102 /* Close any open files (which may also cause orphan
6104 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
6105 list_del_init(&mfd->mfd_list);
6106 ma->ma_need = ma->ma_valid = 0;
6108 /* This file is being closed due to an eviction, it
6109 * could have been modified and now dirty regarding to
6110 * HSM archive, check this!
6111 * The logic here is to mark a file dirty if there's a
6112 * chance it was dirtied before the client was evicted,
6113 * so that we don't have to wait for a release attempt
6114 * before finding out the file was actually dirty and
6115 * fail the release. Aggressively marking it dirty here
6116 * will cause the policy engine to attempt to
6117 * re-archive it; when rearchiving, we can compare the
6118 * current version to the HSM data_version and make the
6119 * archive request into a noop if it's not actually
6122 if (mfd->mfd_open_flags & MDS_FMODE_WRITE)
6123 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
6125 /* Don't unlink orphan on failover umount, LU-184 */
6126 if (exp->exp_flags & OBD_OPT_FAILOVER) {
6127 ma->ma_valid = MA_FLAGS;
6128 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
6130 mdt_mfd_close(info, mfd);
6133 info->mti_mdt = NULL;
6134 /* cleanup client slot early */
6135 /* Do not erase record for recoverable client. */
6136 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
6137 tgt_client_del(&env, exp);
6143 static inline void mdt_enable_slc(struct mdt_device *mdt)
6145 if (mdt->mdt_lut.lut_sync_lock_cancel == NEVER_SYNC_ON_CANCEL)
6146 mdt->mdt_lut.lut_sync_lock_cancel = BLOCKING_SYNC_ON_CANCEL;
6149 static inline void mdt_disable_slc(struct mdt_device *mdt)
6151 if (mdt->mdt_lut.lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL)
6152 mdt->mdt_lut.lut_sync_lock_cancel = NEVER_SYNC_ON_CANCEL;
6155 static int mdt_obd_disconnect(struct obd_export *exp)
6162 class_export_get(exp);
6164 if (!(exp->exp_flags & OBD_OPT_FORCE))
6165 tgt_grant_sanity_check(exp->exp_obd, __func__);
6167 if ((exp_connect_flags(exp) & OBD_CONNECT_MDS_MDS) &&
6168 !(exp_connect_flags(exp) & OBD_CONNECT_LIGHTWEIGHT)) {
6169 struct mdt_device *mdt = mdt_dev(exp->exp_obd->obd_lu_dev);
6171 if (atomic_dec_and_test(&mdt->mdt_mds_mds_conns))
6172 mdt_disable_slc(mdt);
6175 rc = server_disconnect_export(exp);
6177 CDEBUG(D_IOCTL, "server disconnect error: rc = %d\n", rc);
6179 tgt_grant_discard(exp);
6181 rc = mdt_export_cleanup(exp);
6182 nodemap_del_member(exp);
6183 class_export_put(exp);
6187 /* mds_connect copy */
6188 static int mdt_obd_connect(const struct lu_env *env,
6189 struct obd_export **exp, struct obd_device *obd,
6190 struct obd_uuid *cluuid,
6191 struct obd_connect_data *data,
6194 struct obd_export *lexp;
6195 struct lustre_handle conn = { 0 };
6196 struct mdt_device *mdt;
6198 lnet_nid_t *client_nid = localdata;
6201 LASSERT(env != NULL);
6202 LASSERT(data != NULL);
6204 if (!exp || !obd || !cluuid)
6207 mdt = mdt_dev(obd->obd_lu_dev);
6209 if ((data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
6210 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
6211 atomic_inc(&mdt->mdt_mds_mds_conns);
6212 mdt_enable_slc(mdt);
6216 * first, check whether the stack is ready to handle requests
6217 * XXX: probably not very appropriate method is used now
6218 * at some point we should find a better one
6220 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) &&
6221 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) &&
6222 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
6223 rc = obd_get_info(env, mdt->mdt_child_exp,
6224 sizeof(KEY_OSP_CONNECTED),
6225 KEY_OSP_CONNECTED, NULL, NULL);
6228 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
6231 rc = class_connect(&conn, obd, cluuid);
6235 lexp = class_conn2export(&conn);
6236 LASSERT(lexp != NULL);
6238 rc = nodemap_add_member(*client_nid, lexp);
6239 if (rc != 0 && rc != -EEXIST)
6242 rc = mdt_connect_internal(env, lexp, mdt, data, false);
6244 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
6247 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
6248 rc = tgt_client_new(env, lexp);
6250 mdt_export_stats_init(obd, lexp, localdata);
6254 class_disconnect(lexp);
6255 nodemap_del_member(lexp);
6259 /* Because we do not want this export to be evicted by pinger,
6260 * let's not add this export to the timed chain list. */
6261 if (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) {
6262 spin_lock(&lexp->exp_obd->obd_dev_lock);
6263 list_del_init(&lexp->exp_obd_chain_timed);
6264 spin_unlock(&lexp->exp_obd->obd_dev_lock);
6271 static int mdt_obd_reconnect(const struct lu_env *env,
6272 struct obd_export *exp, struct obd_device *obd,
6273 struct obd_uuid *cluuid,
6274 struct obd_connect_data *data,
6277 lnet_nid_t *client_nid = localdata;
6281 if (exp == NULL || obd == NULL || cluuid == NULL)
6284 rc = nodemap_add_member(*client_nid, exp);
6285 if (rc != 0 && rc != -EEXIST)
6288 rc = mdt_connect_internal(env, exp, mdt_dev(obd->obd_lu_dev), data,
6291 mdt_export_stats_init(obd, exp, localdata);
6293 nodemap_del_member(exp);
6298 /* FIXME: Can we avoid using these two interfaces? */
6299 static int mdt_init_export(struct obd_export *exp)
6301 struct mdt_export_data *med = &exp->exp_mdt_data;
6305 INIT_LIST_HEAD(&med->med_open_head);
6306 spin_lock_init(&med->med_open_lock);
6307 spin_lock(&exp->exp_lock);
6308 exp->exp_connecting = 1;
6309 spin_unlock(&exp->exp_lock);
6311 /* self-export doesn't need client data and ldlm initialization */
6312 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
6313 &exp->exp_client_uuid)))
6316 rc = tgt_client_alloc(exp);
6320 rc = ldlm_init_export(exp);
6327 tgt_client_free(exp);
6329 CERROR("%s: Failed to initialize export: rc = %d\n",
6330 exp->exp_obd->obd_name, rc);
6334 static int mdt_destroy_export(struct obd_export *exp)
6338 target_destroy_export(exp);
6339 /* destroy can be called from failed obd_setup, so
6340 * checking uuid is safer than obd_self_export */
6341 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
6342 &exp->exp_client_uuid)))
6345 ldlm_destroy_export(exp);
6346 tgt_client_free(exp);
6348 LASSERT(list_empty(&exp->exp_outstanding_replies));
6349 LASSERT(list_empty(&exp->exp_mdt_data.med_open_head));
6352 * discard grants once we're sure no more
6353 * interaction with the client is possible
6355 tgt_grant_discard(exp);
6356 if (exp_connect_flags(exp) & OBD_CONNECT_GRANT)
6357 exp->exp_obd->u.obt.obt_lut->lut_tgd.tgd_tot_granted_clients--;
6359 if (!(exp->exp_flags & OBD_OPT_FORCE))
6360 tgt_grant_sanity_check(exp->exp_obd, __func__);
6365 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
6366 struct linkea_data *ldata)
6370 LASSERT(ldata->ld_buf->lb_buf != NULL);
6372 if (!mdt_object_exists(mdt_obj))
6375 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6376 ldata->ld_buf, XATTR_NAME_LINK);
6377 if (rc == -ERANGE) {
6378 /* Buf was too small, figure out what we need. */
6379 lu_buf_free(ldata->ld_buf);
6380 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6381 ldata->ld_buf, XATTR_NAME_LINK);
6384 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
6385 if (ldata->ld_buf->lb_buf == NULL)
6387 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6388 ldata->ld_buf, XATTR_NAME_LINK);
6393 return linkea_init_with_rec(ldata);
6397 * Given an MDT object, try to look up the full path to the object.
6398 * Part of the MDT layer implementation of lfs fid2path.
6400 * \param[in] info Per-thread common data shared by MDT level handlers.
6401 * \param[in] obj Object to do path lookup of
6402 * \param[in,out] fp User-provided struct to store path information
6403 * \param[in] root_fid Root FID of current path should reach
6405 * \retval 0 Lookup successful, path information stored in fp
6406 * \retval -EAGAIN Lookup failed, usually because object is being moved
6407 * \retval negative errno if there was a problem
6409 static int mdt_path_current(struct mdt_thread_info *info,
6410 struct mdt_object *obj,
6411 struct getinfo_fid2path *fp,
6412 struct lu_fid *root_fid)
6414 struct mdt_device *mdt = info->mti_mdt;
6415 struct mdt_object *mdt_obj;
6416 struct link_ea_header *leh;
6417 struct link_ea_entry *lee;
6418 struct lu_name *tmpname = &info->mti_name;
6419 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
6420 struct lu_buf *buf = &info->mti_big_buf;
6423 struct linkea_data ldata = { NULL };
6428 /* temp buffer for path element, the buffer will be finally freed
6429 * in mdt_thread_info_fini */
6430 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
6431 if (buf->lb_buf == NULL)
6435 ptr = fp->gf_u.gf_path + fp->gf_pathlen - 1;
6438 *tmpfid = fp->gf_fid = *mdt_object_fid(obj);
6440 while (!lu_fid_eq(root_fid, &fp->gf_fid)) {
6441 struct lu_buf lmv_buf;
6443 if (!lu_fid_eq(root_fid, &mdt->mdt_md_root_fid) &&
6444 lu_fid_eq(&mdt->mdt_md_root_fid, &fp->gf_fid))
6445 GOTO(out, rc = -ENOENT);
6447 if (lu_fid_eq(mdt_object_fid(obj), tmpfid)) {
6449 mdt_object_get(info->mti_env, mdt_obj);
6451 mdt_obj = mdt_object_find(info->mti_env, mdt, tmpfid);
6452 if (IS_ERR(mdt_obj))
6453 GOTO(out, rc = PTR_ERR(mdt_obj));
6456 if (!mdt_object_exists(mdt_obj)) {
6457 mdt_object_put(info->mti_env, mdt_obj);
6458 GOTO(out, rc = -ENOENT);
6461 if (mdt_object_remote(mdt_obj)) {
6462 mdt_object_put(info->mti_env, mdt_obj);
6463 GOTO(remote_out, rc = -EREMOTE);
6466 rc = mdt_links_read(info, mdt_obj, &ldata);
6468 mdt_object_put(info->mti_env, mdt_obj);
6473 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
6474 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
6475 /* If set, use link #linkno for path lookup, otherwise use
6476 link #0. Only do this for the final path element. */
6477 if (first && fp->gf_linkno < leh->leh_reccount) {
6479 for (count = 0; count < fp->gf_linkno; count++) {
6480 lee = (struct link_ea_entry *)
6481 ((char *)lee + reclen);
6482 linkea_entry_unpack(lee, &reclen, tmpname,
6485 if (fp->gf_linkno < leh->leh_reccount - 1)
6486 /* indicate to user there are more links */
6490 lmv_buf.lb_buf = info->mti_xattr_buf;
6491 lmv_buf.lb_len = sizeof(info->mti_xattr_buf);
6492 /* Check if it is slave stripes */
6493 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6494 &lmv_buf, XATTR_NAME_LMV);
6495 mdt_object_put(info->mti_env, mdt_obj);
6497 union lmv_mds_md *lmm = lmv_buf.lb_buf;
6499 /* For slave stripes, get its master */
6500 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE) {
6501 fp->gf_fid = *tmpfid;
6504 } else if (rc < 0 && rc != -ENODATA) {
6510 /* Pack the name in the end of the buffer */
6511 ptr -= tmpname->ln_namelen;
6512 if (ptr - 1 <= fp->gf_u.gf_path)
6513 GOTO(out, rc = -EOVERFLOW);
6514 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
6517 /* keep the last resolved fid to the client, so the
6518 * client will build the left path on another MDT for
6520 fp->gf_fid = *tmpfid;
6526 ptr++; /* skip leading / */
6527 memmove(fp->gf_u.gf_path, ptr,
6528 fp->gf_u.gf_path + fp->gf_pathlen - ptr);
6535 * Given an MDT object, use mdt_path_current to get the path.
6536 * Essentially a wrapper to retry mdt_path_current a set number of times
6537 * if -EAGAIN is returned (usually because an object is being moved).
6539 * Part of the MDT layer implementation of lfs fid2path.
6541 * \param[in] info Per-thread common data shared by mdt level handlers.
6542 * \param[in] obj Object to do path lookup of
6543 * \param[in,out] fp User-provided struct for arguments and to store path
6546 * \retval 0 Lookup successful, path information stored in fp
6547 * \retval negative errno if there was a problem
6549 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
6550 struct getinfo_fid2path *fp, struct lu_fid *root_fid)
6552 struct mdt_device *mdt = info->mti_mdt;
6557 if (fp->gf_pathlen < 3)
6560 if (root_fid == NULL)
6561 root_fid = &mdt->mdt_md_root_fid;
6563 if (lu_fid_eq(root_fid, mdt_object_fid(obj))) {
6564 fp->gf_u.gf_path[0] = '\0';
6568 /* Retry multiple times in case file is being moved */
6569 while (tries-- && rc == -EAGAIN)
6570 rc = mdt_path_current(info, obj, fp, root_fid);
6576 * Get the full path of the provided FID, as of changelog record recno.
6578 * This checks sanity and looks up object for user provided FID
6579 * before calling the actual path lookup code.
6581 * Part of the MDT layer implementation of lfs fid2path.
6583 * \param[in] info Per-thread common data shared by mdt level handlers.
6584 * \param[in,out] fp User-provided struct for arguments and to store path
6587 * \retval 0 Lookup successful, path information and recno stored in fp
6588 * \retval -ENOENT, object does not exist
6589 * \retval negative errno if there was a problem
6591 static int mdt_fid2path(struct mdt_thread_info *info,
6592 struct lu_fid *root_fid,
6593 struct getinfo_fid2path *fp)
6595 struct mdt_device *mdt = info->mti_mdt;
6596 struct mdt_object *obj;
6600 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
6601 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
6603 if (!fid_is_sane(&fp->gf_fid))
6606 if (!fid_is_namespace_visible(&fp->gf_fid)) {
6607 CDEBUG(D_INFO, "%s: "DFID" is invalid, f_seq should be >= %#llx"
6608 ", or f_oid != 0, or f_ver == 0\n", mdt_obd_name(mdt),
6609 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
6613 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
6616 CDEBUG(D_IOCTL, "cannot find "DFID": rc = %d\n",
6617 PFID(&fp->gf_fid), rc);
6621 if (mdt_object_remote(obj))
6623 else if (!mdt_object_exists(obj))
6629 mdt_object_put(info->mti_env, obj);
6630 CDEBUG(D_IOCTL, "nonlocal object "DFID": rc = %d\n",
6631 PFID(&fp->gf_fid), rc);
6635 rc = mdt_path(info, obj, fp, root_fid);
6637 CDEBUG(D_INFO, "fid "DFID", path %s recno %#llx linkno %u\n",
6638 PFID(&fp->gf_fid), fp->gf_u.gf_path,
6639 fp->gf_recno, fp->gf_linkno);
6641 mdt_object_put(info->mti_env, obj);
6646 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key, int keylen,
6647 void *val, int vallen)
6649 struct getinfo_fid2path *fpout, *fpin;
6650 struct lu_fid *root_fid = NULL;
6653 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
6656 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
6657 lustre_swab_fid2path(fpin);
6659 memcpy(fpout, fpin, sizeof(*fpin));
6660 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
6663 if (keylen >= cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*fpin) +
6664 sizeof(struct lu_fid)) {
6665 /* client sent its root FID, which is normally fileset FID */
6666 root_fid = fpin->gf_u.gf_root_fid;
6667 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
6668 lustre_swab_lu_fid(root_fid);
6670 if (root_fid != NULL && !fid_is_sane(root_fid))
6674 rc = mdt_fid2path(info, root_fid, fpout);
6678 int mdt_get_info(struct tgt_session_info *tsi)
6688 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
6690 CDEBUG(D_IOCTL, "No GETINFO key\n");
6691 RETURN(err_serious(-EFAULT));
6693 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
6696 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
6697 if (vallen == NULL) {
6698 CDEBUG(D_IOCTL, "%s: cannot get RMF_GETINFO_VALLEN buffer\n",
6699 tgt_name(tsi->tsi_tgt));
6700 RETURN(err_serious(-EFAULT));
6703 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
6705 rc = req_capsule_server_pack(tsi->tsi_pill);
6707 RETURN(err_serious(rc));
6709 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
6710 if (valout == NULL) {
6711 CDEBUG(D_IOCTL, "%s: cannot get get-info RPC out buffer\n",
6712 tgt_name(tsi->tsi_tgt));
6713 RETURN(err_serious(-EFAULT));
6716 if (KEY_IS(KEY_FID2PATH)) {
6717 struct mdt_thread_info *info = tsi2mdt_info(tsi);
6719 rc = mdt_rpc_fid2path(info, key, keylen, valout, *vallen);
6720 mdt_thread_info_fini(info);
6727 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
6729 struct obd_ioctl_data *data = karg;
6732 struct mdt_object *obj;
6733 struct mdt_lock_handle *lh;
6737 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
6738 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
6741 fid = (struct lu_fid *)data->ioc_inlbuf1;
6743 if (!fid_is_sane(fid))
6746 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
6748 lh = &mti->mti_lh[MDT_LH_PARENT];
6749 mdt_lock_reg_init(lh, LCK_CR);
6751 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
6753 RETURN(PTR_ERR(obj));
6755 if (mdt_object_remote(obj)) {
6758 * before calling version get the correct MDS should be
6759 * fid, this is error to find remote object here
6761 CERROR("nonlocal object "DFID"\n", PFID(fid));
6762 } else if (!mdt_object_exists(obj)) {
6763 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
6766 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
6767 *(__u64 *)data->ioc_inlbuf2 = version;
6770 mdt_object_unlock_put(mti, obj, lh, 1);
6774 /* ioctls on obd dev */
6775 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
6776 void *karg, void __user *uarg)
6779 struct obd_device *obd = exp->exp_obd;
6780 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
6781 struct dt_device *dt = mdt->mdt_bottom;
6785 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
6786 rc = lu_env_init(&env, LCT_MD_THREAD);
6792 rc = mdt_device_sync(&env, mdt);
6794 case OBD_IOC_SET_READONLY:
6795 rc = dt_sync(&env, dt);
6797 rc = dt_ro(&env, dt);
6799 case OBD_IOC_ABORT_RECOVERY:
6800 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
6801 obd->obd_abort_recovery = 1;
6802 target_stop_recovery_thread(obd);
6805 case OBD_IOC_CHANGELOG_REG:
6806 case OBD_IOC_CHANGELOG_DEREG:
6807 case OBD_IOC_CHANGELOG_CLEAR:
6808 rc = mdt->mdt_child->md_ops->mdo_iocontrol(&env,
6812 case OBD_IOC_START_LFSCK: {
6813 struct md_device *next = mdt->mdt_child;
6814 struct obd_ioctl_data *data = karg;
6815 struct lfsck_start_param lsp;
6817 if (unlikely(data == NULL)) {
6822 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
6823 lsp.lsp_index_valid = 0;
6824 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
6827 case OBD_IOC_STOP_LFSCK: {
6828 struct md_device *next = mdt->mdt_child;
6829 struct obd_ioctl_data *data = karg;
6830 struct lfsck_stop stop;
6832 stop.ls_status = LS_STOPPED;
6833 /* Old lfsck utils may pass NULL @stop. */
6834 if (data->ioc_inlbuf1 == NULL)
6838 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
6840 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
6843 case OBD_IOC_QUERY_LFSCK: {
6844 struct md_device *next = mdt->mdt_child;
6845 struct obd_ioctl_data *data = karg;
6847 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0,
6851 case OBD_IOC_GET_OBJ_VERSION: {
6852 struct mdt_thread_info *mti;
6853 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6854 memset(mti, 0, sizeof *mti);
6855 mti->mti_env = &env;
6859 rc = mdt_ioc_version_get(mti, karg);
6862 case OBD_IOC_CATLOGLIST: {
6863 struct mdt_thread_info *mti;
6865 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6866 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
6867 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
6868 &mti->mti_tmp_fid1);
6873 CERROR("%s: Not supported cmd = %d, rc = %d\n",
6874 mdt_obd_name(mdt), cmd, rc);
6881 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
6883 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
6887 if (!mdt->mdt_skip_lfsck && !mdt->mdt_bottom->dd_rdonly) {
6888 struct lfsck_start_param lsp;
6890 lsp.lsp_start = NULL;
6891 lsp.lsp_index_valid = 0;
6892 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
6893 OBD_IOC_START_LFSCK,
6895 if (rc != 0 && rc != -EALREADY)
6896 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
6897 mdt_obd_name(mdt), rc);
6900 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
6904 static int mdt_obd_postrecov(struct obd_device *obd)
6909 rc = lu_env_init(&env, LCT_MD_THREAD);
6912 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
6917 static struct obd_ops mdt_obd_device_ops = {
6918 .o_owner = THIS_MODULE,
6919 .o_set_info_async = mdt_obd_set_info_async,
6920 .o_connect = mdt_obd_connect,
6921 .o_reconnect = mdt_obd_reconnect,
6922 .o_disconnect = mdt_obd_disconnect,
6923 .o_init_export = mdt_init_export,
6924 .o_destroy_export = mdt_destroy_export,
6925 .o_iocontrol = mdt_iocontrol,
6926 .o_postrecov = mdt_obd_postrecov,
6927 /* Data-on-MDT IO methods */
6928 .o_preprw = mdt_obd_preprw,
6929 .o_commitrw = mdt_obd_commitrw,
6932 static struct lu_device* mdt_device_fini(const struct lu_env *env,
6933 struct lu_device *d)
6935 struct mdt_device *m = mdt_dev(d);
6942 static struct lu_device *mdt_device_free(const struct lu_env *env,
6943 struct lu_device *d)
6945 struct mdt_device *m = mdt_dev(d);
6948 lu_device_fini(&m->mdt_lu_dev);
6954 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
6955 struct lu_device_type *t,
6956 struct lustre_cfg *cfg)
6958 struct lu_device *l;
6959 struct mdt_device *m;
6966 rc = mdt_init0(env, m, t, cfg);
6968 mdt_device_free(env, l);
6973 l = ERR_PTR(-ENOMEM);
6977 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
6978 LU_KEY_INIT(mdt, struct mdt_thread_info);
6980 static void mdt_key_fini(const struct lu_context *ctx,
6981 struct lu_context_key *key, void* data)
6983 struct mdt_thread_info *info = data;
6985 if (info->mti_big_lmm) {
6986 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
6987 info->mti_big_lmm = NULL;
6988 info->mti_big_lmmsize = 0;
6991 if (info->mti_big_acl) {
6992 OBD_FREE_LARGE(info->mti_big_acl, info->mti_big_aclsize);
6993 info->mti_big_acl = NULL;
6994 info->mti_big_aclsize = 0;
7000 /* context key: mdt_thread_key */
7001 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
7003 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
7005 return lu_ucred(info->mti_env);
7008 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
7010 return lu_ucred_check(info->mti_env);
7014 * Enable/disable COS (Commit On Sharing).
7016 * Set/Clear the COS flag in mdt options.
7018 * \param mdt mdt device
7019 * \param val 0 disables COS, other values enable COS
7021 void mdt_enable_cos(struct mdt_device *mdt, bool val)
7026 mdt->mdt_opts.mo_cos = val;
7027 rc = lu_env_init(&env, LCT_LOCAL);
7028 if (unlikely(rc != 0)) {
7029 CWARN("%s: lu_env initialization failed, cannot "
7030 "sync: rc = %d\n", mdt_obd_name(mdt), rc);
7033 mdt_device_sync(&env, mdt);
7038 * Check COS (Commit On Sharing) status.
7040 * Return COS flag status.
7042 * \param mdt mdt device
7044 int mdt_cos_is_enabled(struct mdt_device *mdt)
7046 return mdt->mdt_opts.mo_cos != 0;
7049 static struct lu_device_type_operations mdt_device_type_ops = {
7050 .ldto_device_alloc = mdt_device_alloc,
7051 .ldto_device_free = mdt_device_free,
7052 .ldto_device_fini = mdt_device_fini
7055 static struct lu_device_type mdt_device_type = {
7056 .ldt_tags = LU_DEVICE_MD,
7057 .ldt_name = LUSTRE_MDT_NAME,
7058 .ldt_ops = &mdt_device_type_ops,
7059 .ldt_ctx_tags = LCT_MD_THREAD
7062 static int __init mdt_init(void)
7066 BUILD_BUG_ON(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") !=
7067 FID_NOBRACE_LEN + 1);
7068 BUILD_BUG_ON(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") !=
7070 rc = lu_kmem_init(mdt_caches);
7074 rc = mds_mod_init();
7078 rc = class_register_type(&mdt_obd_device_ops, NULL, true, NULL,
7079 LUSTRE_MDT_NAME, &mdt_device_type);
7084 lu_kmem_fini(mdt_caches);
7091 static void __exit mdt_exit(void)
7093 class_unregister_type(LUSTRE_MDT_NAME);
7095 lu_kmem_fini(mdt_caches);
7098 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
7099 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
7100 MODULE_VERSION(LUSTRE_VERSION_STRING);
7101 MODULE_LICENSE("GPL");
7103 module_init(mdt_init);
7104 module_exit(mdt_exit);