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, 2016, 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"
70 static unsigned int max_mod_rpcs_per_client = 8;
71 module_param(max_mod_rpcs_per_client, uint, 0644);
72 MODULE_PARM_DESC(max_mod_rpcs_per_client, "maximum number of modify RPCs in flight allowed per client");
74 mdl_mode_t mdt_mdl_lock_modes[] = {
75 [LCK_MINMODE] = MDL_MINMODE,
82 [LCK_GROUP] = MDL_GROUP
85 enum ldlm_mode mdt_dlm_lock_modes[] = {
86 [MDL_MINMODE] = LCK_MINMODE,
93 [MDL_GROUP] = LCK_GROUP
96 static struct mdt_device *mdt_dev(struct lu_device *d);
97 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
99 static const struct lu_object_operations mdt_obj_ops;
101 /* Slab for MDT object allocation */
102 static struct kmem_cache *mdt_object_kmem;
104 /* For HSM restore handles */
105 struct kmem_cache *mdt_hsm_cdt_kmem;
107 /* For HSM request handles */
108 struct kmem_cache *mdt_hsm_car_kmem;
110 static struct lu_kmem_descr mdt_caches[] = {
112 .ckd_cache = &mdt_object_kmem,
113 .ckd_name = "mdt_obj",
114 .ckd_size = sizeof(struct mdt_object)
117 .ckd_cache = &mdt_hsm_cdt_kmem,
118 .ckd_name = "mdt_cdt_restore_handle",
119 .ckd_size = sizeof(struct cdt_restore_handle)
122 .ckd_cache = &mdt_hsm_car_kmem,
123 .ckd_name = "mdt_cdt_agent_req",
124 .ckd_size = sizeof(struct cdt_agent_req)
131 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag)
135 return rep->lock_policy_res1 & op_flag;
138 void mdt_clear_disposition(struct mdt_thread_info *info,
139 struct ldlm_reply *rep, __u64 op_flag)
142 info->mti_opdata &= ~op_flag;
143 tgt_opdata_clear(info->mti_env, op_flag);
146 rep->lock_policy_res1 &= ~op_flag;
149 void mdt_set_disposition(struct mdt_thread_info *info,
150 struct ldlm_reply *rep, __u64 op_flag)
153 info->mti_opdata |= op_flag;
154 tgt_opdata_set(info->mti_env, op_flag);
157 rep->lock_policy_res1 |= op_flag;
160 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm)
162 lh->mlh_pdo_hash = 0;
163 lh->mlh_reg_mode = lm;
164 lh->mlh_rreg_mode = lm;
165 lh->mlh_type = MDT_REG_LOCK;
168 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
169 const struct lu_name *lname)
171 lh->mlh_reg_mode = lock_mode;
172 lh->mlh_pdo_mode = LCK_MINMODE;
173 lh->mlh_rreg_mode = lock_mode;
174 lh->mlh_type = MDT_PDO_LOCK;
176 if (lu_name_is_valid(lname)) {
177 lh->mlh_pdo_hash = ll_full_name_hash(NULL, lname->ln_name,
179 /* XXX Workaround for LU-2856
181 * Zero is a valid return value of full_name_hash, but
182 * several users of mlh_pdo_hash assume a non-zero
183 * hash value. We therefore map zero onto an
184 * arbitrary, but consistent value (1) to avoid
185 * problems further down the road. */
186 if (unlikely(lh->mlh_pdo_hash == 0))
187 lh->mlh_pdo_hash = 1;
189 lh->mlh_pdo_hash = 0;
193 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
194 struct mdt_lock_handle *lh)
200 * Any dir access needs couple of locks:
202 * 1) on part of dir we gonna take lookup/modify;
204 * 2) on whole dir to protect it from concurrent splitting and/or to
205 * flush client's cache for readdir().
207 * so, for a given mode and object this routine decides what lock mode
208 * to use for lock #2:
210 * 1) if caller's gonna lookup in dir then we need to protect dir from
211 * being splitted only - LCK_CR
213 * 2) if caller's gonna modify dir then we need to protect dir from
214 * being splitted and to flush cache - LCK_CW
216 * 3) if caller's gonna modify dir and that dir seems ready for
217 * splitting then we need to protect it from any type of access
218 * (lookup/modify/split) - LCK_EX --bzzz
221 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
222 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
225 * Ask underlaying level its opinion about preferable PDO lock mode
226 * having access type passed as regular lock mode:
228 * - MDL_MINMODE means that lower layer does not want to specify lock
231 * - MDL_NL means that no PDO lock should be taken. This is used in some
232 * cases. Say, for non-splittable directories no need to use PDO locks
235 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
236 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
238 if (mode != MDL_MINMODE) {
239 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
242 * Lower layer does not want to specify locking mode. We do it
243 * our selves. No special protection is needed, just flush
244 * client's cache on modification and allow concurrent
247 switch (lh->mlh_reg_mode) {
249 lh->mlh_pdo_mode = LCK_EX;
252 lh->mlh_pdo_mode = LCK_CR;
255 lh->mlh_pdo_mode = LCK_CW;
258 CERROR("Not expected lock type (0x%x)\n",
259 (int)lh->mlh_reg_mode);
264 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
268 static int mdt_lookup_fileset(struct mdt_thread_info *info, const char *fileset,
271 struct mdt_device *mdt = info->mti_mdt;
272 struct lu_name *lname = &info->mti_name;
274 struct mdt_object *parent;
278 LASSERT(!info->mti_cross_ref);
280 OBD_ALLOC(name, NAME_MAX + 1);
283 lname->ln_name = name;
286 * We may want to allow this to mount a completely separate
287 * fileset from the MDT in the future, but keeping it to
288 * ROOT/ only for now avoid potential security issues.
290 *fid = mdt->mdt_md_root_fid;
292 while (rc == 0 && fileset != NULL && *fileset != '\0') {
293 const char *s1 = fileset;
299 while (*s2 != '/' && *s2 != '\0')
307 lname->ln_namelen = s2 - s1;
308 if (lname->ln_namelen > NAME_MAX) {
313 /* reject .. as a path component */
314 if (lname->ln_namelen == 2 &&
315 strncmp(s1, "..", 2) == 0) {
320 strncpy(name, s1, lname->ln_namelen);
321 name[lname->ln_namelen] = '\0';
323 parent = mdt_object_find(info->mti_env, mdt, fid);
324 if (IS_ERR(parent)) {
325 rc = PTR_ERR(parent);
328 /* Only got the fid of this obj by name */
330 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
331 fid, &info->mti_spec);
332 mdt_object_put(info->mti_env, parent);
335 parent = mdt_object_find(info->mti_env, mdt, fid);
337 rc = PTR_ERR(parent);
339 mode = lu_object_attr(&parent->mot_obj);
340 mdt_object_put(info->mti_env, parent);
346 OBD_FREE(name, NAME_MAX + 1);
351 static int mdt_get_root(struct tgt_session_info *tsi)
353 struct mdt_thread_info *info = tsi2mdt_info(tsi);
354 struct mdt_device *mdt = info->mti_mdt;
355 struct mdt_body *repbody;
356 char *fileset = NULL, *buffer = NULL;
358 struct obd_export *exp = info->mti_exp;
359 char *nodemap_fileset;
363 rc = mdt_check_ucred(info);
365 GOTO(out, rc = err_serious(rc));
367 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GET_ROOT_PACK))
368 GOTO(out, rc = err_serious(-ENOMEM));
370 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
371 if (req_capsule_get_size(info->mti_pill, &RMF_NAME, RCL_CLIENT) > 0) {
372 fileset = req_capsule_client_get(info->mti_pill, &RMF_NAME);
374 GOTO(out, rc = err_serious(-EFAULT));
377 nodemap_fileset = nodemap_get_fileset(exp->exp_target_data.ted_nodemap);
378 if (nodemap_fileset && nodemap_fileset[0]) {
379 CDEBUG(D_INFO, "nodemap fileset is %s\n", nodemap_fileset);
381 /* consider fileset from client as a sub-fileset
382 * of the nodemap one */
383 OBD_ALLOC(buffer, PATH_MAX + 1);
385 GOTO(out, rc = err_serious(-ENOMEM));
386 if (snprintf(buffer, PATH_MAX + 1, "%s/%s",
387 nodemap_fileset, fileset) >= PATH_MAX + 1)
388 GOTO(out, rc = err_serious(-EINVAL));
391 /* enforce fileset as specified in the nodemap */
392 fileset = nodemap_fileset;
397 CDEBUG(D_INFO, "Getting fileset %s\n", fileset);
398 rc = mdt_lookup_fileset(info, fileset, &repbody->mbo_fid1);
400 GOTO(out, rc = err_serious(rc));
402 repbody->mbo_fid1 = mdt->mdt_md_root_fid;
404 repbody->mbo_valid |= OBD_MD_FLID;
408 mdt_thread_info_fini(info);
410 OBD_FREE(buffer, PATH_MAX+1);
414 static int mdt_statfs(struct tgt_session_info *tsi)
416 struct ptlrpc_request *req = tgt_ses_req(tsi);
417 struct mdt_thread_info *info = tsi2mdt_info(tsi);
418 struct mdt_device *mdt = info->mti_mdt;
419 struct tg_grants_data *tgd = &mdt->mdt_lut.lut_tgd;
420 struct ptlrpc_service_part *svcpt;
421 struct obd_statfs *osfs;
426 svcpt = req->rq_rqbd->rqbd_svcpt;
428 /* This will trigger a watchdog timeout */
429 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
430 (MDT_SERVICE_WATCHDOG_FACTOR *
431 at_get(&svcpt->scp_at_estimate)) + 1);
433 rc = mdt_check_ucred(info);
435 GOTO(out, rc = err_serious(rc));
437 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
438 GOTO(out, rc = err_serious(-ENOMEM));
440 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
442 GOTO(out, rc = -EPROTO);
444 rc = tgt_statfs_internal(tsi->tsi_env, &mdt->mdt_lut, osfs,
445 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
450 /* at least try to account for cached pages. its still racy and
451 * might be under-reporting if clients haven't announced their
452 * caches with brw recently */
453 CDEBUG(D_SUPER | D_CACHE, "blocks cached %llu granted %llu"
454 " pending %llu free %llu avail %llu\n",
455 tgd->tgd_tot_dirty, tgd->tgd_tot_granted,
456 tgd->tgd_tot_pending,
457 osfs->os_bfree << tgd->tgd_blockbits,
458 osfs->os_bavail << tgd->tgd_blockbits);
460 osfs->os_bavail -= min_t(u64, osfs->os_bavail,
461 ((tgd->tgd_tot_dirty + tgd->tgd_tot_pending +
462 osfs->os_bsize - 1) >> tgd->tgd_blockbits));
464 tgt_grant_sanity_check(mdt->mdt_lu_dev.ld_obd, __func__);
465 CDEBUG(D_CACHE, "%llu blocks: %llu free, %llu avail; "
466 "%llu objects: %llu free; state %x\n",
467 osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
468 osfs->os_files, osfs->os_ffree, osfs->os_state);
470 if (!exp_grant_param_supp(tsi->tsi_exp) &&
471 tgd->tgd_blockbits > COMPAT_BSIZE_SHIFT) {
472 /* clients which don't support OBD_CONNECT_GRANT_PARAM
473 * should not see a block size > page size, otherwise
474 * cl_lost_grant goes mad. Therefore, we emulate a 4KB (=2^12)
475 * block size which is the biggest block size known to work
476 * with all client's page size. */
477 osfs->os_blocks <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
478 osfs->os_bfree <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
479 osfs->os_bavail <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
480 osfs->os_bsize = 1 << COMPAT_BSIZE_SHIFT;
483 mdt_counter_incr(req, LPROC_MDT_STATFS);
485 mdt_thread_info_fini(info);
490 * Pack size attributes into the reply.
492 int mdt_pack_size2body(struct mdt_thread_info *info,
493 const struct lu_fid *fid, bool dom_lock)
496 struct md_attr *ma = &info->mti_attr;
501 LASSERT(ma->ma_attr.la_valid & LA_MODE);
503 if (!S_ISREG(ma->ma_attr.la_mode) ||
504 !(ma->ma_valid & MA_LOV && ma->ma_lmm != NULL))
507 dom_stripe = mdt_lmm_dom_entry(ma->ma_lmm);
508 /* no DoM stripe, no size in reply */
509 if (dom_stripe == LMM_NO_DOM)
512 /* no DoM lock, no size in reply */
516 /* Either DoM lock exists or LMM has only DoM stripe then
517 * return size on body. */
518 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
520 mdt_dom_object_size(info->mti_env, info->mti_mdt, fid, b, dom_lock);
524 #ifdef CONFIG_FS_POSIX_ACL
526 * Pack ACL data into the reply. UIDs/GIDs are mapped and filtered by nodemap.
528 * \param info thread info object
529 * \param repbody reply to pack ACLs into
530 * \param o mdt object of file to examine
531 * \param nodemap nodemap of client to reply to
533 * \retval -errno error getting or parsing ACL from disk
535 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
536 struct mdt_object *o, struct lu_nodemap *nodemap)
538 const struct lu_env *env = info->mti_env;
539 struct md_object *next = mdt_object_child(o);
540 struct lu_buf *buf = &info->mti_buf;
541 struct mdt_device *mdt = info->mti_mdt;
546 buf->lb_buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
547 buf->lb_len = req_capsule_get_size(info->mti_pill, &RMF_ACL,
549 if (buf->lb_len == 0)
553 rc = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_ACCESS);
555 if (rc == -ENODATA) {
556 repbody->mbo_aclsize = 0;
557 repbody->mbo_valid |= OBD_MD_FLACL;
559 } else if (rc == -EOPNOTSUPP) {
563 exp_connect_large_acl(info->mti_exp) &&
564 buf->lb_buf != info->mti_big_acl) {
565 if (info->mti_big_acl == NULL) {
566 OBD_ALLOC_LARGE(info->mti_big_acl,
567 mdt->mdt_max_ea_size);
568 if (info->mti_big_acl == NULL) {
569 CERROR("%s: unable to grow "
572 PFID(mdt_object_fid(o)));
576 info->mti_big_aclsize =
577 mdt->mdt_max_ea_size;
580 CDEBUG(D_INODE, "%s: grow the "DFID
581 " ACL buffer to size %d\n",
583 PFID(mdt_object_fid(o)),
584 mdt->mdt_max_ea_size);
586 buf->lb_buf = info->mti_big_acl;
587 buf->lb_len = info->mti_big_aclsize;
592 CERROR("%s: unable to read "DFID" ACL: rc = %d\n",
593 mdt_obd_name(mdt), PFID(mdt_object_fid(o)), rc);
596 if (buf->lb_buf == info->mti_big_acl)
597 info->mti_big_acl_used = 1;
599 rc = nodemap_map_acl(nodemap, buf->lb_buf,
600 rc, NODEMAP_FS_TO_CLIENT);
601 /* if all ACLs mapped out, rc is still >= 0 */
603 CERROR("%s: nodemap_map_acl unable to parse "DFID
604 " ACL: rc = %d\n", mdt_obd_name(mdt),
605 PFID(mdt_object_fid(o)), rc);
607 repbody->mbo_aclsize = rc;
608 repbody->mbo_valid |= OBD_MD_FLACL;
617 /* XXX Look into layout in MDT layer. */
618 static inline bool mdt_hsm_is_released(struct lov_mds_md *lmm)
620 struct lov_comp_md_v1 *comp_v1;
621 struct lov_mds_md *v1;
624 if (lmm->lmm_magic == LOV_MAGIC_COMP_V1) {
625 comp_v1 = (struct lov_comp_md_v1 *)lmm;
627 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
628 v1 = (struct lov_mds_md *)((char *)comp_v1 +
629 comp_v1->lcm_entries[i].lcme_offset);
630 /* We don't support partial release for now */
631 if (!(v1->lmm_pattern & LOV_PATTERN_F_RELEASED))
636 return (lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) ?
641 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
642 const struct lu_attr *attr, const struct lu_fid *fid)
644 struct md_attr *ma = &info->mti_attr;
645 struct obd_export *exp = info->mti_exp;
646 struct lu_nodemap *nodemap = NULL;
648 LASSERT(ma->ma_valid & MA_INODE);
650 if (attr->la_valid & LA_ATIME) {
651 b->mbo_atime = attr->la_atime;
652 b->mbo_valid |= OBD_MD_FLATIME;
654 if (attr->la_valid & LA_MTIME) {
655 b->mbo_mtime = attr->la_mtime;
656 b->mbo_valid |= OBD_MD_FLMTIME;
658 if (attr->la_valid & LA_CTIME) {
659 b->mbo_ctime = attr->la_ctime;
660 b->mbo_valid |= OBD_MD_FLCTIME;
662 if (attr->la_valid & LA_FLAGS) {
663 b->mbo_flags = attr->la_flags;
664 b->mbo_valid |= OBD_MD_FLFLAGS;
666 if (attr->la_valid & LA_NLINK) {
667 b->mbo_nlink = attr->la_nlink;
668 b->mbo_valid |= OBD_MD_FLNLINK;
670 if (attr->la_valid & (LA_UID|LA_GID)) {
671 nodemap = nodemap_get_from_exp(exp);
675 if (attr->la_valid & LA_UID) {
676 b->mbo_uid = nodemap_map_id(nodemap, NODEMAP_UID,
677 NODEMAP_FS_TO_CLIENT,
679 b->mbo_valid |= OBD_MD_FLUID;
681 if (attr->la_valid & LA_GID) {
682 b->mbo_gid = nodemap_map_id(nodemap, NODEMAP_GID,
683 NODEMAP_FS_TO_CLIENT,
685 b->mbo_valid |= OBD_MD_FLGID;
688 if (attr->la_valid & LA_PROJID) {
689 /* TODO, nodemap for project id */
690 b->mbo_projid = attr->la_projid;
691 b->mbo_valid |= OBD_MD_FLPROJID;
694 b->mbo_mode = attr->la_mode;
695 if (attr->la_valid & LA_MODE)
696 b->mbo_valid |= OBD_MD_FLMODE;
697 if (attr->la_valid & LA_TYPE)
698 b->mbo_valid |= OBD_MD_FLTYPE;
702 b->mbo_valid |= OBD_MD_FLID;
703 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, valid=%#llx\n",
704 PFID(fid), b->mbo_nlink, b->mbo_mode, b->mbo_valid);
707 if (!(attr->la_valid & LA_TYPE))
710 b->mbo_rdev = attr->la_rdev;
711 b->mbo_size = attr->la_size;
712 b->mbo_blocks = attr->la_blocks;
714 if (!S_ISREG(attr->la_mode)) {
715 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
716 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
717 /* means no objects are allocated on osts. */
718 LASSERT(!(ma->ma_valid & MA_LOV));
719 /* just ignore blocks occupied by extend attributes on MDS */
721 /* if no object is allocated on osts, the size on mds is valid.
723 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
724 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL) {
725 if (mdt_hsm_is_released(ma->ma_lmm)) {
726 /* A released file stores its size on MDS. */
727 /* But return 1 block for released file, unless tools
728 * like tar will consider it fully sparse. (LU-3864)
730 if (unlikely(b->mbo_size == 0))
734 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
735 } else if (info->mti_som_valid) { /* som is valid */
736 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
740 if (fid != NULL && (b->mbo_valid & OBD_MD_FLSIZE))
741 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
742 PFID(fid), (unsigned long long)b->mbo_size);
745 if (!IS_ERR_OR_NULL(nodemap))
746 nodemap_putref(nodemap);
749 static inline int mdt_body_has_lov(const struct lu_attr *la,
750 const struct mdt_body *body)
752 return (S_ISREG(la->la_mode) && (body->mbo_valid & OBD_MD_FLEASIZE)) ||
753 (S_ISDIR(la->la_mode) && (body->mbo_valid & OBD_MD_FLDIREA));
756 void mdt_client_compatibility(struct mdt_thread_info *info)
758 struct mdt_body *body;
759 struct ptlrpc_request *req = mdt_info_req(info);
760 struct obd_export *exp = req->rq_export;
761 struct md_attr *ma = &info->mti_attr;
762 struct lu_attr *la = &ma->ma_attr;
765 if (exp_connect_layout(exp))
766 /* the client can deal with 16-bit lmm_stripe_count */
769 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
771 if (!mdt_body_has_lov(la, body))
774 /* now we have a reply with a lov for a client not compatible with the
775 * layout lock so we have to clean the layout generation number */
776 if (S_ISREG(la->la_mode))
777 ma->ma_lmm->lmm_layout_gen = 0;
781 static int mdt_attr_get_eabuf_size(struct mdt_thread_info *info,
782 struct mdt_object *o)
784 const struct lu_env *env = info->mti_env;
787 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
796 /* Is it a directory? Let's check for the LMV as well */
797 if (S_ISDIR(lu_object_attr(&mdt_object_child(o)->mo_lu))) {
798 rc2 = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
802 rc2 = mo_xattr_get(env, mdt_object_child(o),
804 XATTR_NAME_DEFAULT_LMV);
806 if ((rc2 < 0 && rc2 != -ENODATA) || (rc2 > rc))
814 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
817 const struct lu_env *env = info->mti_env;
821 LASSERT(info->mti_big_lmm_used == 0);
822 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
826 /* big_lmm may need to be grown */
827 if (info->mti_big_lmmsize < rc) {
828 int size = size_roundup_power2(rc);
830 if (info->mti_big_lmmsize > 0) {
831 /* free old buffer */
832 LASSERT(info->mti_big_lmm);
833 OBD_FREE_LARGE(info->mti_big_lmm,
834 info->mti_big_lmmsize);
835 info->mti_big_lmm = NULL;
836 info->mti_big_lmmsize = 0;
839 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
840 if (info->mti_big_lmm == NULL)
842 info->mti_big_lmmsize = size;
844 LASSERT(info->mti_big_lmmsize >= rc);
846 info->mti_buf.lb_buf = info->mti_big_lmm;
847 info->mti_buf.lb_len = info->mti_big_lmmsize;
848 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
853 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
854 struct md_attr *ma, const char *name)
856 struct md_object *next = mdt_object_child(o);
857 struct lu_buf *buf = &info->mti_buf;
860 if (strcmp(name, XATTR_NAME_LOV) == 0) {
861 buf->lb_buf = ma->ma_lmm;
862 buf->lb_len = ma->ma_lmm_size;
863 LASSERT(!(ma->ma_valid & MA_LOV));
864 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
865 buf->lb_buf = ma->ma_lmv;
866 buf->lb_len = ma->ma_lmv_size;
867 LASSERT(!(ma->ma_valid & MA_LMV));
868 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
869 buf->lb_buf = ma->ma_lmv;
870 buf->lb_len = ma->ma_lmv_size;
871 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
876 rc = mo_xattr_get(info->mti_env, next, buf, name);
880 if (strcmp(name, XATTR_NAME_LOV) == 0) {
881 if (info->mti_big_lmm_used)
882 ma->ma_lmm = info->mti_big_lmm;
884 /* NOT return LOV EA with hole to old client. */
885 if (unlikely(le32_to_cpu(ma->ma_lmm->lmm_pattern) &
886 LOV_PATTERN_F_HOLE) &&
887 !(exp_connect_flags(info->mti_exp) &
888 OBD_CONNECT_LFSCK)) {
891 ma->ma_lmm_size = rc;
892 ma->ma_valid |= MA_LOV;
894 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
895 if (info->mti_big_lmm_used)
896 ma->ma_lmv = info->mti_big_lmm;
898 ma->ma_lmv_size = rc;
899 ma->ma_valid |= MA_LMV;
900 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
901 ma->ma_lmv_size = rc;
902 ma->ma_valid |= MA_LMV_DEF;
905 /* Update mdt_max_mdsize so all clients will be aware that */
906 if (info->mti_mdt->mdt_max_mdsize < rc)
907 info->mti_mdt->mdt_max_mdsize = rc;
910 } else if (rc == -ENODATA) {
913 } else if (rc == -ERANGE) {
914 /* Default LMV has fixed size, so it must be able to fit
915 * in the original buffer */
916 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
918 rc = mdt_big_xattr_get(info, o, name);
920 info->mti_big_lmm_used = 1;
928 static int mdt_attr_get_pfid(struct mdt_thread_info *info,
929 struct mdt_object *o, struct lu_fid *pfid)
931 struct lu_buf *buf = &info->mti_buf;
932 struct link_ea_header *leh;
933 struct link_ea_entry *lee;
937 buf->lb_buf = info->mti_big_lmm;
938 buf->lb_len = info->mti_big_lmmsize;
939 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
940 buf, XATTR_NAME_LINK);
941 /* ignore errors, MA_PFID won't be set and it is
942 * up to the caller to treat this as an error */
943 if (rc == -ERANGE || buf->lb_len == 0) {
944 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
945 buf->lb_buf = info->mti_big_lmm;
946 buf->lb_len = info->mti_big_lmmsize;
951 if (rc < sizeof(*leh)) {
952 CERROR("short LinkEA on "DFID": rc = %d\n",
953 PFID(mdt_object_fid(o)), rc);
957 leh = (struct link_ea_header *) buf->lb_buf;
958 lee = (struct link_ea_entry *)(leh + 1);
959 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
960 leh->leh_magic = LINK_EA_MAGIC;
961 leh->leh_reccount = __swab32(leh->leh_reccount);
962 leh->leh_len = __swab64(leh->leh_len);
964 if (leh->leh_magic != LINK_EA_MAGIC)
966 if (leh->leh_reccount == 0)
969 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
970 fid_be_to_cpu(pfid, pfid);
975 int mdt_attr_get_complex(struct mdt_thread_info *info,
976 struct mdt_object *o, struct md_attr *ma)
978 const struct lu_env *env = info->mti_env;
979 struct md_object *next = mdt_object_child(o);
980 struct lu_buf *buf = &info->mti_buf;
981 int need = ma->ma_need;
988 if (mdt_object_exists(o) == 0)
989 GOTO(out, rc = -ENOENT);
990 mode = lu_object_attr(&next->mo_lu);
992 if (need & MA_INODE) {
993 ma->ma_need = MA_INODE;
994 rc = mo_attr_get(env, next, ma);
999 (void) mdt_get_som(info, o, &ma->ma_attr);
1000 ma->ma_valid |= MA_INODE;
1003 if (need & MA_PFID) {
1004 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
1006 ma->ma_valid |= MA_PFID;
1007 /* ignore this error, parent fid is not mandatory */
1011 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
1012 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
1017 if (need & MA_LMV && S_ISDIR(mode)) {
1018 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
1023 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
1024 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
1029 if (need & MA_HSM && S_ISREG(mode)) {
1030 buf->lb_buf = info->mti_xattr_buf;
1031 buf->lb_len = sizeof(info->mti_xattr_buf);
1032 CLASSERT(sizeof(struct hsm_attrs) <=
1033 sizeof(info->mti_xattr_buf));
1034 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
1035 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
1037 ma->ma_valid |= MA_HSM;
1038 else if (rc2 < 0 && rc2 != -ENODATA)
1039 GOTO(out, rc = rc2);
1042 #ifdef CONFIG_FS_POSIX_ACL
1043 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
1044 buf->lb_buf = ma->ma_acl;
1045 buf->lb_len = ma->ma_acl_size;
1046 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
1048 ma->ma_acl_size = rc2;
1049 ma->ma_valid |= MA_ACL_DEF;
1050 } else if (rc2 == -ENODATA) {
1052 ma->ma_acl_size = 0;
1054 GOTO(out, rc = rc2);
1059 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = %#llx ma_lmm=%p\n",
1060 rc, ma->ma_valid, ma->ma_lmm);
1064 static int mdt_getattr_internal(struct mdt_thread_info *info,
1065 struct mdt_object *o, int ma_need)
1067 struct md_object *next = mdt_object_child(o);
1068 const struct mdt_body *reqbody = info->mti_body;
1069 struct ptlrpc_request *req = mdt_info_req(info);
1070 struct md_attr *ma = &info->mti_attr;
1071 struct lu_attr *la = &ma->ma_attr;
1072 struct req_capsule *pill = info->mti_pill;
1073 const struct lu_env *env = info->mti_env;
1074 struct mdt_body *repbody;
1075 struct lu_buf *buffer = &info->mti_buf;
1076 struct obd_export *exp = info->mti_exp;
1080 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
1081 RETURN(err_serious(-ENOMEM));
1083 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1087 if (mdt_object_remote(o)) {
1088 /* This object is located on remote node.*/
1089 /* Return -ENOTSUPP for old client */
1090 if (!mdt_is_dne_client(req->rq_export))
1091 GOTO(out, rc = -ENOTSUPP);
1093 repbody->mbo_fid1 = *mdt_object_fid(o);
1094 repbody->mbo_valid = OBD_MD_FLID | OBD_MD_MDS;
1098 if (reqbody->mbo_eadatasize > 0) {
1099 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
1100 if (buffer->lb_buf == NULL)
1101 GOTO(out, rc = -EPROTO);
1102 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD,
1105 buffer->lb_buf = NULL;
1107 ma_need &= ~(MA_LOV | MA_LMV);
1108 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
1109 mdt_obd_name(info->mti_mdt),
1110 req->rq_export->exp_client_uuid.uuid);
1113 /* If it is dir object and client require MEA, then we got MEA */
1114 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1115 (reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
1116 /* Assumption: MDT_MD size is enough for lmv size. */
1117 ma->ma_lmv = buffer->lb_buf;
1118 ma->ma_lmv_size = buffer->lb_len;
1119 ma->ma_need = MA_INODE;
1120 if (ma->ma_lmv_size > 0) {
1121 if (reqbody->mbo_valid & OBD_MD_MEA)
1122 ma->ma_need |= MA_LMV;
1123 else if (reqbody->mbo_valid & OBD_MD_DEFAULT_MEA)
1124 ma->ma_need |= MA_LMV_DEF;
1127 ma->ma_lmm = buffer->lb_buf;
1128 ma->ma_lmm_size = buffer->lb_len;
1129 ma->ma_need = MA_INODE | MA_HSM;
1130 if (ma->ma_lmm_size > 0)
1131 ma->ma_need |= MA_LOV;
1134 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1135 reqbody->mbo_valid & OBD_MD_FLDIREA &&
1136 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
1137 /* get default stripe info for this dir. */
1138 ma->ma_need |= MA_LOV_DEF;
1140 ma->ma_need |= ma_need;
1142 rc = mdt_attr_get_complex(info, o, ma);
1144 CDEBUG(rc == -ENOENT ? D_OTHER : D_ERROR,
1145 "%s: getattr error for "DFID": rc = %d\n",
1146 mdt_obd_name(info->mti_mdt),
1147 PFID(mdt_object_fid(o)), rc);
1151 /* if file is released, check if a restore is running */
1152 if (ma->ma_valid & MA_HSM) {
1153 repbody->mbo_valid |= OBD_MD_TSTATE;
1154 if ((ma->ma_hsm.mh_flags & HS_RELEASED) &&
1155 mdt_hsm_restore_is_running(info, mdt_object_fid(o)))
1156 repbody->mbo_t_state = MS_RESTORE;
1159 if (likely(ma->ma_valid & MA_INODE))
1160 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
1164 if (mdt_body_has_lov(la, reqbody)) {
1165 if (ma->ma_valid & MA_LOV) {
1166 LASSERT(ma->ma_lmm_size);
1167 repbody->mbo_eadatasize = ma->ma_lmm_size;
1168 if (S_ISDIR(la->la_mode))
1169 repbody->mbo_valid |= OBD_MD_FLDIREA;
1171 repbody->mbo_valid |= OBD_MD_FLEASIZE;
1172 mdt_dump_lmm(D_INFO, ma->ma_lmm, repbody->mbo_valid);
1174 if (ma->ma_valid & MA_LMV) {
1175 /* Return -ENOTSUPP for old client */
1176 if (!mdt_is_striped_client(req->rq_export))
1179 LASSERT(S_ISDIR(la->la_mode));
1180 mdt_dump_lmv(D_INFO, ma->ma_lmv);
1181 repbody->mbo_eadatasize = ma->ma_lmv_size;
1182 repbody->mbo_valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
1184 if (ma->ma_valid & MA_LMV_DEF) {
1185 /* Return -ENOTSUPP for old client */
1186 if (!mdt_is_striped_client(req->rq_export))
1188 LASSERT(S_ISDIR(la->la_mode));
1189 mdt_dump_lmv(D_INFO, ma->ma_lmv);
1190 repbody->mbo_eadatasize = ma->ma_lmv_size;
1191 repbody->mbo_valid |= (OBD_MD_FLDIREA |
1192 OBD_MD_DEFAULT_MEA);
1194 } else if (S_ISLNK(la->la_mode) &&
1195 reqbody->mbo_valid & OBD_MD_LINKNAME) {
1196 buffer->lb_buf = ma->ma_lmm;
1197 /* eadatasize from client includes NULL-terminator, so
1198 * there is no need to read it */
1199 buffer->lb_len = reqbody->mbo_eadatasize - 1;
1200 rc = mo_readlink(env, next, buffer);
1201 if (unlikely(rc <= 0)) {
1202 CERROR("%s: readlink failed for "DFID": rc = %d\n",
1203 mdt_obd_name(info->mti_mdt),
1204 PFID(mdt_object_fid(o)), rc);
1207 int print_limit = min_t(int, PAGE_SIZE - 128, rc);
1209 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
1211 repbody->mbo_valid |= OBD_MD_LINKNAME;
1212 /* we need to report back size with NULL-terminator
1213 * because client expects that */
1214 repbody->mbo_eadatasize = rc + 1;
1215 if (repbody->mbo_eadatasize != reqbody->mbo_eadatasize)
1216 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
1217 "on "DFID ", expected %d\n",
1218 mdt_obd_name(info->mti_mdt),
1219 rc, PFID(mdt_object_fid(o)),
1220 reqbody->mbo_eadatasize - 1);
1221 /* NULL terminate */
1222 ((char *)ma->ma_lmm)[rc] = 0;
1224 /* If the total CDEBUG() size is larger than a page, it
1225 * will print a warning to the console, avoid this by
1226 * printing just the last part of the symlink. */
1227 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
1228 print_limit < rc ? "..." : "", print_limit,
1229 (char *)ma->ma_lmm + rc - print_limit, rc);
1234 if (reqbody->mbo_valid & OBD_MD_FLMODEASIZE) {
1235 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
1236 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
1237 CDEBUG(D_INODE, "changing the max MD size to %u\n",
1238 repbody->mbo_max_mdsize);
1241 #ifdef CONFIG_FS_POSIX_ACL
1242 if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
1243 (reqbody->mbo_valid & OBD_MD_FLACL)) {
1244 struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
1245 if (IS_ERR(nodemap))
1246 RETURN(PTR_ERR(nodemap));
1248 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
1249 nodemap_putref(nodemap);
1255 mdt_counter_incr(req, LPROC_MDT_GETATTR);
1260 static int mdt_getattr(struct tgt_session_info *tsi)
1262 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1263 struct mdt_object *obj = info->mti_object;
1264 struct req_capsule *pill = info->mti_pill;
1265 struct mdt_body *reqbody;
1266 struct mdt_body *repbody;
1270 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1272 LASSERT(obj != NULL);
1273 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1275 /* Unlike intent case where we need to pre-fill out buffers early on
1276 * in intent policy for ldlm reasons, here we can have a much better
1277 * guess at EA size by just reading it from disk.
1278 * Exceptions are readdir and (missing) directory striping */
1280 if (reqbody->mbo_valid & OBD_MD_LINKNAME) {
1281 /* No easy way to know how long is the symlink, but it cannot
1282 * be more than PATH_MAX, so we allocate +1 */
1285 /* A special case for fs ROOT: getattr there might fetch
1286 * default EA for entire fs, not just for this dir!
1288 } else if (lu_fid_eq(mdt_object_fid(obj),
1289 &info->mti_mdt->mdt_md_root_fid) &&
1290 (reqbody->mbo_valid & OBD_MD_FLDIREA) &&
1291 (lustre_msg_get_opc(mdt_info_req(info)->rq_reqmsg) ==
1293 /* Should the default strping be bigger, mdt_fix_reply
1294 * will reallocate */
1295 rc = DEF_REP_MD_SIZE;
1297 /* Read the actual EA size from disk */
1298 rc = mdt_attr_get_eabuf_size(info, obj);
1302 GOTO(out, rc = err_serious(rc));
1304 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, rc);
1306 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
1307 * by default. If the target object has more ACL entries, then
1308 * enlarge the buffer when necessary. */
1309 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
1310 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
1312 rc = req_capsule_server_pack(pill);
1313 if (unlikely(rc != 0))
1314 GOTO(out, rc = err_serious(rc));
1316 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1317 LASSERT(repbody != NULL);
1318 repbody->mbo_eadatasize = 0;
1319 repbody->mbo_aclsize = 0;
1321 rc = mdt_check_ucred(info);
1323 GOTO(out_shrink, rc);
1325 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1327 rc = mdt_getattr_internal(info, obj, 0);
1330 mdt_client_compatibility(info);
1331 rc2 = mdt_fix_reply(info);
1335 mdt_thread_info_fini(info);
1340 * Handler of layout intent RPC requiring the layout modification
1342 * \param[in] info thread environment
1343 * \param[in] obj object
1344 * \param[in] layout layout intent
1345 * \param[in] buf buffer containing client's lovea, could be empty
1347 * \retval 0 on success
1348 * \retval < 0 error code
1350 static int mdt_layout_change(struct mdt_thread_info *info,
1351 struct mdt_object *obj,
1352 struct layout_intent *layout,
1353 const struct lu_buf *buf)
1355 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LOCAL];
1359 CDEBUG(D_INFO, "got layout change request from client: "
1360 "opc:%u flags:%#x extent "DEXT"\n",
1361 layout->li_opc, layout->li_flags,
1362 PEXT(&layout->li_extent));
1364 if (layout->li_extent.e_start >= layout->li_extent.e_end) {
1365 CERROR("Recieved an invalid layout change range "DEXT
1367 PEXT(&layout->li_extent), PFID(mdt_object_fid(obj)));
1371 if (!S_ISREG(lu_object_attr(&obj->mot_obj)))
1372 GOTO(out, rc = -EINVAL);
1374 rc = mo_permission(info->mti_env, NULL, mdt_object_child(obj), NULL,
1379 /* take layout lock to prepare layout change */
1380 mdt_lock_reg_init(lh, LCK_EX);
1381 rc = mdt_object_lock(info, obj, lh,
1382 MDS_INODELOCK_LAYOUT | MDS_INODELOCK_XATTR);
1386 rc = mo_layout_change(info->mti_env, mdt_object_child(obj), layout,
1389 mdt_object_unlock(info, obj, lh, 1);
1395 * Exchange MOF_LOV_CREATED flags between two objects after a
1396 * layout swap. No assumption is made on whether o1 or o2 have
1397 * created objects or not.
1399 * \param[in,out] o1 First swap layout object
1400 * \param[in,out] o2 Second swap layout object
1402 static void mdt_swap_lov_flag(struct mdt_object *o1, struct mdt_object *o2)
1404 unsigned int o1_lov_created = o1->mot_lov_created;
1406 mutex_lock(&o1->mot_lov_mutex);
1407 mutex_lock(&o2->mot_lov_mutex);
1409 o1->mot_lov_created = o2->mot_lov_created;
1410 o2->mot_lov_created = o1_lov_created;
1412 mutex_unlock(&o2->mot_lov_mutex);
1413 mutex_unlock(&o1->mot_lov_mutex);
1416 static int mdt_swap_layouts(struct tgt_session_info *tsi)
1418 struct mdt_thread_info *info;
1419 struct ptlrpc_request *req = tgt_ses_req(tsi);
1420 struct obd_export *exp = req->rq_export;
1421 struct mdt_object *o1, *o2, *o;
1422 struct mdt_lock_handle *lh1, *lh2;
1423 struct mdc_swap_layouts *msl;
1427 /* client does not support layout lock, so layout swaping
1429 * FIXME: there is a problem for old clients which don't support
1430 * layout lock yet. If those clients have already opened the file
1431 * they won't be notified at all so that old layout may still be
1432 * used to do IO. This can be fixed after file release is landed by
1433 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1434 if (!exp_connect_layout(exp))
1435 RETURN(-EOPNOTSUPP);
1437 info = tsi2mdt_info(tsi);
1439 if (info->mti_dlm_req != NULL)
1440 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
1442 o1 = info->mti_object;
1443 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1444 &info->mti_body->mbo_fid2);
1446 GOTO(out, rc = PTR_ERR(o));
1448 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1449 GOTO(put, rc = -ENOENT);
1451 rc = lu_fid_cmp(&info->mti_body->mbo_fid1, &info->mti_body->mbo_fid2);
1452 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1458 /* permission check. Make sure the calling process having permission
1459 * to write both files. */
1460 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1465 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1470 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1472 GOTO(put, rc = -EPROTO);
1474 lh1 = &info->mti_lh[MDT_LH_NEW];
1475 mdt_lock_reg_init(lh1, LCK_EX);
1476 lh2 = &info->mti_lh[MDT_LH_OLD];
1477 mdt_lock_reg_init(lh2, LCK_EX);
1479 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1480 MDS_INODELOCK_XATTR);
1484 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1485 MDS_INODELOCK_XATTR);
1489 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1490 mdt_object_child(o2), msl->msl_flags);
1494 mdt_swap_lov_flag(o1, o2);
1497 mdt_object_unlock(info, o2, lh2, rc);
1499 mdt_object_unlock(info, o1, lh1, rc);
1501 mdt_object_put(info->mti_env, o);
1503 mdt_thread_info_fini(info);
1507 static int mdt_raw_lookup(struct mdt_thread_info *info,
1508 struct mdt_object *parent,
1509 const struct lu_name *lname,
1510 struct ldlm_reply *ldlm_rep)
1512 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1516 LASSERT(!info->mti_cross_ref);
1518 /* Only got the fid of this obj by name */
1519 fid_zero(child_fid);
1520 rc = mdo_lookup(info->mti_env, mdt_object_child(info->mti_object),
1521 lname, child_fid, &info->mti_spec);
1523 struct mdt_body *repbody;
1525 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1526 repbody->mbo_fid1 = *child_fid;
1527 repbody->mbo_valid = OBD_MD_FLID;
1528 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1529 } else if (rc == -ENOENT) {
1530 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1537 * UPDATE lock should be taken against parent, and be released before exit;
1538 * child_bits lock should be taken against child, and be returned back:
1539 * (1)normal request should release the child lock;
1540 * (2)intent request will grant the lock to client.
1542 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1543 struct mdt_lock_handle *lhc,
1545 struct ldlm_reply *ldlm_rep)
1547 struct ptlrpc_request *req = mdt_info_req(info);
1548 struct mdt_body *reqbody = NULL;
1549 struct mdt_object *parent = info->mti_object;
1550 struct mdt_object *child;
1551 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1552 struct lu_name *lname = NULL;
1553 struct mdt_lock_handle *lhp = NULL;
1554 struct ldlm_lock *lock;
1562 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1563 LASSERT(ergo(is_resent,
1564 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1569 if (info->mti_cross_ref) {
1570 /* Only getattr on the child. Parent is on another node. */
1571 mdt_set_disposition(info, ldlm_rep,
1572 DISP_LOOKUP_EXECD | DISP_LOOKUP_POS);
1574 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1576 PFID(mdt_object_fid(child)), ldlm_rep);
1578 rc = mdt_check_resent_lock(info, child, lhc);
1581 } else if (rc > 0) {
1582 mdt_lock_handle_init(lhc);
1583 mdt_lock_reg_init(lhc, LCK_PR);
1586 * Object's name is on another MDS, no lookup or layout
1587 * lock is needed here but update lock is.
1589 child_bits &= ~(MDS_INODELOCK_LOOKUP |
1590 MDS_INODELOCK_LAYOUT);
1591 child_bits |= MDS_INODELOCK_PERM | MDS_INODELOCK_UPDATE;
1593 rc = mdt_object_lock(info, child, lhc, child_bits);
1598 /* Finally, we can get attr for child. */
1599 if (!mdt_object_exists(child)) {
1600 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
1602 "remote object doesn't exist.");
1603 mdt_object_unlock(info, child, lhc, 1);
1607 rc = mdt_getattr_internal(info, child, 0);
1608 if (unlikely(rc != 0))
1609 mdt_object_unlock(info, child, lhc, 1);
1614 lname = &info->mti_name;
1615 mdt_name_unpack(info->mti_pill, &RMF_NAME, lname, MNF_FIX_ANON);
1617 if (lu_name_is_valid(lname)) {
1618 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", "
1619 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1620 PNAME(lname), ldlm_rep);
1622 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1623 if (unlikely(reqbody == NULL))
1624 RETURN(err_serious(-EPROTO));
1626 *child_fid = reqbody->mbo_fid2;
1628 if (unlikely(!fid_is_sane(child_fid)))
1629 RETURN(err_serious(-EINVAL));
1631 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1633 PFID(mdt_object_fid(parent)),
1634 PFID(&reqbody->mbo_fid2), ldlm_rep);
1637 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1639 if (unlikely(!mdt_object_exists(parent)) && lu_name_is_valid(lname)) {
1640 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1642 "Parent doesn't exist!");
1646 if (mdt_object_remote(parent)) {
1647 CERROR("%s: parent "DFID" is on remote target\n",
1648 mdt_obd_name(info->mti_mdt),
1649 PFID(mdt_object_fid(parent)));
1653 if (lu_name_is_valid(lname)) {
1654 /* Always allow to lookup ".." */
1655 if (unlikely(lname->ln_namelen == 2 &&
1656 lname->ln_name[0] == '.' &&
1657 lname->ln_name[1] == '.'))
1658 info->mti_spec.sp_permitted = 1;
1660 if (info->mti_body->mbo_valid == OBD_MD_FLID) {
1661 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1666 /* step 1: lock parent only if parent is a directory */
1667 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
1668 lhp = &info->mti_lh[MDT_LH_PARENT];
1669 mdt_lock_pdo_init(lhp, LCK_PR, lname);
1670 rc = mdt_object_lock(info, parent, lhp,
1671 MDS_INODELOCK_UPDATE);
1672 if (unlikely(rc != 0))
1676 /* step 2: lookup child's fid by name */
1677 fid_zero(child_fid);
1678 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
1679 child_fid, &info->mti_spec);
1681 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1684 GOTO(out_parent, rc);
1687 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1690 *step 3: find the child object by fid & lock it.
1691 * regardless if it is local or remote.
1693 *Note: LU-3240 (commit 762f2114d282a98ebfa4dbbeea9298a8088ad24e)
1694 * set parent dir fid the same as child fid in getattr by fid case
1695 * we should not lu_object_find() the object again, could lead
1696 * to hung if there is a concurrent unlink destroyed the object.
1698 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
1699 mdt_object_get(info->mti_env, parent);
1702 child = mdt_object_find(info->mti_env, info->mti_mdt,
1706 if (unlikely(IS_ERR(child)))
1707 GOTO(out_parent, rc = PTR_ERR(child));
1709 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout * 2);
1710 if (!mdt_object_exists(child)) {
1711 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1713 "Object doesn't exist!");
1714 GOTO(out_child, rc = -ENOENT);
1717 rc = mdt_check_resent_lock(info, child, lhc);
1719 GOTO(out_child, rc);
1720 } else if (rc > 0) {
1721 mdt_lock_handle_init(lhc);
1722 mdt_lock_reg_init(lhc, LCK_PR);
1724 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1725 mdt_object_exists(child) && !mdt_object_remote(child)) {
1726 struct md_attr *ma = &info->mti_attr;
1729 ma->ma_need = MA_INODE;
1730 rc = mdt_attr_get_complex(info, child, ma);
1731 if (unlikely(rc != 0))
1732 GOTO(out_child, rc);
1734 /* If the file has not been changed for some time, we
1735 * return not only a LOOKUP lock, but also an UPDATE
1736 * lock and this might save us RPC on later STAT. For
1737 * directories, it also let negative dentry cache start
1738 * working for this dir. */
1739 if (ma->ma_valid & MA_INODE &&
1740 ma->ma_attr.la_valid & LA_CTIME &&
1741 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1742 ma->ma_attr.la_ctime < cfs_time_current_sec())
1743 child_bits |= MDS_INODELOCK_UPDATE;
1746 /* layout lock must be granted in a best-effort way
1747 * for IT operations */
1748 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1749 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
1750 !mdt_object_remote(child) && ldlm_rep != NULL) {
1751 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1752 exp_connect_layout(info->mti_exp)) {
1753 /* try to grant layout lock for regular file. */
1754 try_bits = MDS_INODELOCK_LAYOUT;
1756 /* Acquire DOM lock in advance for data-on-mdt file */
1757 if (child != parent)
1758 try_bits |= MDS_INODELOCK_DOM;
1761 if (try_bits != 0) {
1762 /* try layout lock, it may fail to be granted due to
1763 * contention at LOOKUP or UPDATE */
1764 rc = mdt_object_lock_try(info, child, lhc, &child_bits,
1766 if (child_bits & MDS_INODELOCK_LAYOUT)
1769 /* Do not enqueue the UPDATE lock from MDT(cross-MDT),
1770 * client will enqueue the lock to the remote MDT */
1771 if (mdt_object_remote(child))
1772 child_bits &= ~MDS_INODELOCK_UPDATE;
1773 rc = mdt_object_lock(info, child, lhc, child_bits);
1775 if (unlikely(rc != 0))
1776 GOTO(out_child, rc);
1779 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1781 /* finally, we can get attr for child. */
1782 rc = mdt_getattr_internal(info, child, ma_need);
1783 if (unlikely(rc != 0)) {
1784 mdt_object_unlock(info, child, lhc, 1);
1786 /* Debugging code. */
1787 LDLM_DEBUG(lock, "Returning lock to client");
1788 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1789 &lock->l_resource->lr_name),
1790 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1791 PLDLMRES(lock->l_resource),
1792 PFID(mdt_object_fid(child)));
1794 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
1795 mdt_object_exists(child) && !mdt_object_remote(child) &&
1797 LDLM_LOCK_PUT(lock);
1798 mdt_object_put(info->mti_env, child);
1799 /* NB: call the mdt_pack_size2body always after
1800 * mdt_object_put(), that is why this speacial
1801 * exit path is used. */
1802 rc = mdt_pack_size2body(info, child_fid,
1803 child_bits & MDS_INODELOCK_DOM);
1804 if (rc != 0 && child_bits & MDS_INODELOCK_DOM) {
1805 /* DOM lock was taken in advance but this is
1806 * not DoM file. Drop the lock. */
1807 lock_res_and_lock(lock);
1808 ldlm_inodebits_drop(lock, MDS_INODELOCK_DOM);
1809 unlock_res_and_lock(lock);
1812 GOTO(out_parent, rc = 0);
1816 LDLM_LOCK_PUT(lock);
1820 mdt_object_put(info->mti_env, child);
1823 mdt_object_unlock(info, parent, lhp, 1);
1827 /* normal handler: should release the child lock */
1828 static int mdt_getattr_name(struct tgt_session_info *tsi)
1830 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1831 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1832 struct mdt_body *reqbody;
1833 struct mdt_body *repbody;
1837 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1838 LASSERT(reqbody != NULL);
1839 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1840 LASSERT(repbody != NULL);
1842 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1843 repbody->mbo_eadatasize = 0;
1844 repbody->mbo_aclsize = 0;
1846 rc = mdt_init_ucred_intent_getattr(info, reqbody);
1848 GOTO(out_shrink, rc);
1850 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1851 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1852 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1853 lhc->mlh_reg_lh.cookie = 0;
1855 mdt_exit_ucred(info);
1858 mdt_client_compatibility(info);
1859 rc2 = mdt_fix_reply(info);
1862 mdt_thread_info_fini(info);
1866 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1867 void *karg, void __user *uarg);
1869 static int mdt_set_info(struct tgt_session_info *tsi)
1871 struct ptlrpc_request *req = tgt_ses_req(tsi);
1874 int keylen, vallen, rc = 0;
1878 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
1880 DEBUG_REQ(D_HA, req, "no set_info key");
1881 RETURN(err_serious(-EFAULT));
1884 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
1887 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
1889 DEBUG_REQ(D_HA, req, "no set_info val");
1890 RETURN(err_serious(-EFAULT));
1893 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
1896 /* Swab any part of val you need to here */
1897 if (KEY_IS(KEY_READ_ONLY)) {
1898 spin_lock(&req->rq_export->exp_lock);
1900 *exp_connect_flags_ptr(req->rq_export) |=
1903 *exp_connect_flags_ptr(req->rq_export) &=
1904 ~OBD_CONNECT_RDONLY;
1905 spin_unlock(&req->rq_export->exp_lock);
1906 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1907 struct changelog_setinfo *cs = val;
1909 if (vallen != sizeof(*cs)) {
1910 CERROR("%s: bad changelog_clear setinfo size %d\n",
1911 tgt_name(tsi->tsi_tgt), vallen);
1914 if (ptlrpc_req_need_swab(req)) {
1915 __swab64s(&cs->cs_recno);
1916 __swab32s(&cs->cs_id);
1919 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
1921 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
1923 obd_export_evict_by_nid(req->rq_export->exp_obd, val);
1930 static int mdt_readpage(struct tgt_session_info *tsi)
1932 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
1933 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
1934 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1935 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
1936 struct mdt_body *repbody;
1942 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1943 RETURN(err_serious(-ENOMEM));
1945 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
1946 if (repbody == NULL || reqbody == NULL)
1947 RETURN(err_serious(-EFAULT));
1950 * prepare @rdpg before calling lower layers and transfer itself. Here
1951 * reqbody->size contains offset of where to start to read and
1952 * reqbody->nlink contains number bytes to read.
1954 rdpg->rp_hash = reqbody->mbo_size;
1955 if (rdpg->rp_hash != reqbody->mbo_size) {
1956 CERROR("Invalid hash: %#llx != %#llx\n",
1957 rdpg->rp_hash, reqbody->mbo_size);
1961 rdpg->rp_attrs = reqbody->mbo_mode;
1962 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
1963 rdpg->rp_attrs |= LUDA_64BITHASH;
1964 rdpg->rp_count = min_t(unsigned int, reqbody->mbo_nlink,
1965 exp_max_brw_size(tsi->tsi_exp));
1966 rdpg->rp_npages = (rdpg->rp_count + PAGE_SIZE - 1) >>
1968 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1969 if (rdpg->rp_pages == NULL)
1972 for (i = 0; i < rdpg->rp_npages; ++i) {
1973 rdpg->rp_pages[i] = alloc_page(GFP_NOFS);
1974 if (rdpg->rp_pages[i] == NULL)
1975 GOTO(free_rdpg, rc = -ENOMEM);
1978 /* call lower layers to fill allocated pages with directory data */
1979 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
1981 GOTO(free_rdpg, rc);
1983 /* send pages to client */
1984 rc = tgt_sendpage(tsi, rdpg, rc);
1989 for (i = 0; i < rdpg->rp_npages; i++)
1990 if (rdpg->rp_pages[i] != NULL)
1991 __free_page(rdpg->rp_pages[i]);
1992 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1994 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
2000 static int mdt_fix_attr_ucred(struct mdt_thread_info *info, __u32 op)
2002 struct lu_ucred *uc = mdt_ucred_check(info);
2003 struct lu_attr *attr = &info->mti_attr.ma_attr;
2008 if (op != REINT_SETATTR) {
2009 if ((attr->la_valid & LA_UID) && (attr->la_uid != -1))
2010 attr->la_uid = uc->uc_fsuid;
2011 /* for S_ISGID, inherit gid from his parent, such work will be
2012 * done in cmm/mdd layer, here set all cases as uc->uc_fsgid. */
2013 if ((attr->la_valid & LA_GID) && (attr->la_gid != -1))
2014 attr->la_gid = uc->uc_fsgid;
2020 static int mdt_reint_internal(struct mdt_thread_info *info,
2021 struct mdt_lock_handle *lhc,
2024 struct req_capsule *pill = info->mti_pill;
2025 struct mdt_body *repbody;
2030 rc = mdt_reint_unpack(info, op);
2032 CERROR("Can't unpack reint, rc %d\n", rc);
2033 RETURN(err_serious(rc));
2036 /* for replay (no_create) lmm is not needed, client has it already */
2037 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2038 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2041 /* llog cookies are always 0, the field is kept for compatibility */
2042 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2043 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
2045 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
2046 * by default. If the target object has more ACL entries, then
2047 * enlarge the buffer when necessary. */
2048 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
2049 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
2050 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
2052 rc = req_capsule_server_pack(pill);
2054 CERROR("Can't pack response, rc %d\n", rc);
2055 RETURN(err_serious(rc));
2058 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
2059 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
2061 repbody->mbo_eadatasize = 0;
2062 repbody->mbo_aclsize = 0;
2065 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
2067 /* for replay no cookkie / lmm need, because client have this already */
2068 if (info->mti_spec.no_create)
2069 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2070 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
2072 rc = mdt_init_ucred_reint(info);
2074 GOTO(out_shrink, rc);
2076 rc = mdt_fix_attr_ucred(info, op);
2078 GOTO(out_ucred, rc = err_serious(rc));
2080 rc = mdt_check_resent(info, mdt_reconstruct, lhc);
2082 GOTO(out_ucred, rc);
2083 } else if (rc == 1) {
2084 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
2085 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
2086 GOTO(out_ucred, rc);
2088 rc = mdt_reint_rec(info, lhc);
2091 mdt_exit_ucred(info);
2093 mdt_client_compatibility(info);
2094 rc2 = mdt_fix_reply(info);
2100 static long mdt_reint_opcode(struct ptlrpc_request *req,
2101 const struct req_format **fmt)
2103 struct mdt_device *mdt;
2104 struct mdt_rec_reint *rec;
2107 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
2109 opc = rec->rr_opcode;
2110 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
2111 if (opc < REINT_MAX && fmt[opc] != NULL)
2112 req_capsule_extend(&req->rq_pill, fmt[opc]);
2114 mdt = mdt_exp2dev(req->rq_export);
2115 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
2116 " rc = %d\n", req->rq_export->exp_obd->obd_name,
2117 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
2118 opc = err_serious(-EFAULT);
2121 opc = err_serious(-EFAULT);
2126 static int mdt_reint(struct tgt_session_info *tsi)
2130 static const struct req_format *reint_fmts[REINT_MAX] = {
2131 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
2132 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
2133 [REINT_LINK] = &RQF_MDS_REINT_LINK,
2134 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
2135 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
2136 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
2137 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
2138 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
2139 [REINT_MIGRATE] = &RQF_MDS_REINT_RENAME
2144 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
2146 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2148 * No lock possible here from client to pass it to reint code
2151 rc = mdt_reint_internal(info, NULL, opc);
2152 mdt_thread_info_fini(info);
2157 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
2161 /* this should sync the whole device */
2162 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
2164 struct dt_device *dt = mdt->mdt_bottom;
2168 rc = dt->dd_ops->dt_sync(env, dt);
2172 /* this should sync this object */
2173 static int mdt_object_sync(const struct lu_env *env, struct obd_export *exp,
2174 struct mdt_object *mo)
2180 if (!mdt_object_exists(mo)) {
2181 CWARN("%s: non existing object "DFID": rc = %d\n",
2182 exp->exp_obd->obd_name, PFID(mdt_object_fid(mo)),
2187 rc = mo_object_sync(env, mdt_object_child(mo));
2192 static int mdt_sync(struct tgt_session_info *tsi)
2194 struct ptlrpc_request *req = tgt_ses_req(tsi);
2195 struct req_capsule *pill = tsi->tsi_pill;
2196 struct mdt_body *body;
2201 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
2202 RETURN(err_serious(-ENOMEM));
2204 if (fid_seq(&tsi->tsi_mdt_body->mbo_fid1) == 0) {
2205 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
2207 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2209 /* sync an object */
2210 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp,
2213 const struct lu_fid *fid;
2214 struct lu_attr *la = &info->mti_attr.ma_attr;
2216 info->mti_attr.ma_need = MA_INODE;
2217 info->mti_attr.ma_valid = 0;
2218 rc = mdt_attr_get_complex(info, info->mti_object,
2221 body = req_capsule_server_get(pill,
2223 fid = mdt_object_fid(info->mti_object);
2224 mdt_pack_attr2body(info, body, la, fid);
2227 mdt_thread_info_fini(info);
2230 mdt_counter_incr(req, LPROC_MDT_SYNC);
2235 static int mdt_data_sync(struct tgt_session_info *tsi)
2237 struct mdt_thread_info *info;
2238 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2239 struct ost_body *body = tsi->tsi_ost_body;
2240 struct ost_body *repbody;
2241 struct mdt_object *mo = NULL;
2247 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
2249 /* if no fid is specified then do nothing,
2250 * device sync is done via MDS_SYNC */
2251 if (fid_is_zero(&tsi->tsi_fid))
2254 mo = mdt_object_find(tsi->tsi_env, mdt, &tsi->tsi_fid);
2256 RETURN(PTR_ERR(mo));
2258 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp, mo);
2262 repbody->oa.o_oi = body->oa.o_oi;
2263 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
2265 info = tsi2mdt_info(tsi);
2266 ma = &info->mti_attr;
2267 ma->ma_need = MA_INODE;
2269 rc = mdt_attr_get_complex(info, mo, ma);
2271 obdo_from_la(&repbody->oa, &ma->ma_attr, VALID_FLAGS);
2274 mdt_thread_info_fini(info);
2279 mdt_object_put(tsi->tsi_env, mo);
2284 * Handle quota control requests to consult current usage/limit, but also
2285 * to configure quota enforcement
2287 static int mdt_quotactl(struct tgt_session_info *tsi)
2289 struct obd_export *exp = tsi->tsi_exp;
2290 struct req_capsule *pill = tsi->tsi_pill;
2291 struct obd_quotactl *oqctl, *repoqc;
2293 struct mdt_device *mdt = mdt_exp2dev(exp);
2294 struct lu_device *qmt = mdt->mdt_qmt_dev;
2295 struct lu_nodemap *nodemap;
2298 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
2300 RETURN(err_serious(-EPROTO));
2302 rc = req_capsule_server_pack(pill);
2304 RETURN(err_serious(rc));
2306 nodemap = nodemap_get_from_exp(exp);
2307 if (IS_ERR(nodemap))
2308 RETURN(PTR_ERR(nodemap));
2310 switch (oqctl->qc_cmd) {
2311 /* master quotactl */
2314 if (!nodemap_can_setquota(nodemap))
2315 GOTO(out_nodemap, rc = -EPERM);
2319 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2320 /* slave quotactl */
2325 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2326 GOTO(out_nodemap, rc = -EFAULT);
2330 switch (oqctl->qc_type) {
2332 id = nodemap_map_id(nodemap, NODEMAP_UID,
2333 NODEMAP_CLIENT_TO_FS, id);
2336 id = nodemap_map_id(nodemap, NODEMAP_GID,
2337 NODEMAP_CLIENT_TO_FS, id);
2340 /* todo: check/map project id */
2344 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2346 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
2348 GOTO(out_nodemap, rc = err_serious(-EFAULT));
2350 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA)
2351 barrier_exit(tsi->tsi_tgt->lut_bottom);
2353 if (oqctl->qc_id != id)
2354 swap(oqctl->qc_id, id);
2356 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA) {
2357 if (unlikely(!barrier_entry(tsi->tsi_tgt->lut_bottom)))
2358 RETURN(-EINPROGRESS);
2361 switch (oqctl->qc_cmd) {
2367 /* forward quotactl request to QMT */
2368 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
2373 /* slave quotactl */
2374 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
2379 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2380 GOTO(out_nodemap, rc = -EFAULT);
2383 if (oqctl->qc_id != id)
2384 swap(oqctl->qc_id, id);
2391 nodemap_putref(nodemap);
2396 /** clone llog ctxt from child (mdd)
2397 * This allows remote llog (replicator) access.
2398 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2399 * context was originally set up, or we can handle them directly.
2400 * I choose the latter, but that means I need any llog
2401 * contexts set up by child to be accessable by the mdt. So we clone the
2402 * context into our context list here.
2404 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2407 struct md_device *next = mdt->mdt_child;
2408 struct llog_ctxt *ctxt;
2411 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2414 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2415 if (rc || ctxt == NULL) {
2419 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2421 CERROR("Can't set mdt ctxt %d\n", rc);
2426 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2427 struct mdt_device *mdt, int idx)
2429 struct llog_ctxt *ctxt;
2431 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2434 /* Put once for the get we just did, and once for the clone */
2435 llog_ctxt_put(ctxt);
2436 llog_ctxt_put(ctxt);
2441 * sec context handlers
2443 static int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
2445 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2451 * quota request handlers
2453 static int mdt_quota_dqacq(struct tgt_session_info *tsi)
2455 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2456 struct lu_device *qmt = mdt->mdt_qmt_dev;
2461 RETURN(err_serious(-EOPNOTSUPP));
2463 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
2467 struct mdt_object *mdt_object_new(const struct lu_env *env,
2468 struct mdt_device *d,
2469 const struct lu_fid *f)
2471 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2472 struct lu_object *o;
2473 struct mdt_object *m;
2476 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2477 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
2478 if (unlikely(IS_ERR(o)))
2479 m = (struct mdt_object *)o;
2485 struct mdt_object *mdt_object_find(const struct lu_env *env,
2486 struct mdt_device *d,
2487 const struct lu_fid *f)
2489 struct lu_object *o;
2490 struct mdt_object *m;
2493 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2494 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
2495 if (unlikely(IS_ERR(o)))
2496 m = (struct mdt_object *)o;
2504 * Asyncronous commit for mdt device.
2506 * Pass asynchonous commit call down the MDS stack.
2508 * \param env environment
2509 * \param mdt the mdt device
2511 static void mdt_device_commit_async(const struct lu_env *env,
2512 struct mdt_device *mdt)
2514 struct dt_device *dt = mdt->mdt_bottom;
2518 rc = dt->dd_ops->dt_commit_async(env, dt);
2519 if (unlikely(rc != 0))
2520 CWARN("%s: async commit start failed: rc = %d\n",
2521 mdt_obd_name(mdt), rc);
2522 atomic_inc(&mdt->mdt_async_commit_count);
2527 * Mark the lock as "synchonous".
2529 * Mark the lock to deffer transaction commit to the unlock time.
2531 * \param lock the lock to mark as "synchonous"
2533 * \see mdt_is_lock_sync
2534 * \see mdt_save_lock
2536 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2538 lock->l_ast_data = (void*)1;
2542 * Check whehter the lock "synchonous" or not.
2544 * \param lock the lock to check
2545 * \retval 1 the lock is "synchonous"
2546 * \retval 0 the lock isn't "synchronous"
2548 * \see mdt_set_lock_sync
2549 * \see mdt_save_lock
2551 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2553 return lock->l_ast_data != NULL;
2557 * Blocking AST for mdt locks.
2559 * Starts transaction commit if in case of COS lock conflict or
2560 * deffers such a commit to the mdt_save_lock.
2562 * \param lock the lock which blocks a request or cancelling lock
2563 * \param desc unused
2564 * \param data unused
2565 * \param flag indicates whether this cancelling or blocking callback
2567 * \see ldlm_blocking_ast_nocheck
2569 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2570 void *data, int flag)
2572 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2573 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2574 bool commit_async = false;
2578 if (flag == LDLM_CB_CANCELING)
2581 lock_res_and_lock(lock);
2582 if (lock->l_blocking_ast != mdt_blocking_ast) {
2583 unlock_res_and_lock(lock);
2586 /* There is no lock conflict if l_blocking_lock == NULL,
2587 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2588 * when the last reference to a local lock was released */
2589 if (lock->l_req_mode & (LCK_PW | LCK_EX) &&
2590 lock->l_blocking_lock != NULL) {
2591 if (mdt_cos_is_enabled(mdt)) {
2592 if (lock->l_client_cookie !=
2593 lock->l_blocking_lock->l_client_cookie)
2594 mdt_set_lock_sync(lock);
2595 } else if (mdt_slc_is_enabled(mdt) &&
2596 ldlm_is_cos_incompat(lock->l_blocking_lock)) {
2597 mdt_set_lock_sync(lock);
2599 * we may do extra commit here, but there is a small
2600 * window to miss a commit: lock was unlocked (saved),
2601 * then a conflict lock queued and we come here, but
2602 * REP-ACK not received, so lock was not converted to
2604 * Fortunately this window is quite small, so the
2605 * extra commit should be rare (not to say distributed
2606 * operation is rare too).
2608 commit_async = true;
2610 } else if (lock->l_req_mode == LCK_COS &&
2611 lock->l_blocking_lock != NULL) {
2612 commit_async = true;
2615 rc = ldlm_blocking_ast_nocheck(lock);
2620 rc = lu_env_init(&env, LCT_LOCAL);
2621 if (unlikely(rc != 0))
2622 CWARN("%s: lu_env initialization failed, cannot "
2623 "start asynchronous commit: rc = %d\n",
2626 mdt_device_commit_async(&env, mdt);
2633 * Blocking AST for cross-MDT lock
2635 * Discard lock from uncommitted_slc_locks and cancel it.
2637 * \param lock the lock which blocks a request or cancelling lock
2638 * \param desc unused
2639 * \param data unused
2640 * \param flag indicates whether this cancelling or blocking callback
2641 * \retval 0 on success
2642 * \retval negative number on error
2644 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2645 void *data, int flag)
2651 case LDLM_CB_BLOCKING: {
2652 struct lustre_handle lockh;
2654 ldlm_lock2handle(lock, &lockh);
2655 rc = ldlm_cli_cancel(&lockh,
2656 ldlm_is_atomic_cb(lock) ? 0 : LCF_ASYNC);
2658 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2663 case LDLM_CB_CANCELING: {
2664 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2665 struct mdt_device *mdt =
2666 mdt_dev(obd->obd_lu_dev->ld_site->ls_top_dev);
2668 LDLM_DEBUG(lock, "Revoke remote lock\n");
2670 /* discard slc lock here so that it can be cleaned anytime,
2671 * especially for cleanup_resource() */
2672 tgt_discard_slc_lock(&mdt->mdt_lut, lock);
2674 /* once we cache lock, l_ast_data is set to mdt_object */
2675 if (lock->l_ast_data != NULL) {
2676 struct mdt_object *mo = lock->l_ast_data;
2679 rc = lu_env_init(&env, LCT_MD_THREAD);
2680 if (unlikely(rc != 0)) {
2681 CWARN("%s: lu_env initialization failed, object"
2682 "%p "DFID" is leaked!\n",
2684 PFID(mdt_object_fid(mo)));
2688 if (lock->l_policy_data.l_inodebits.bits &
2689 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)) {
2690 rc = mo_invalidate(&env, mdt_object_child(mo));
2691 mo->mot_cache_attr = 0;
2693 mdt_object_put(&env, mo);
2705 int mdt_check_resent_lock(struct mdt_thread_info *info,
2706 struct mdt_object *mo,
2707 struct mdt_lock_handle *lhc)
2709 /* the lock might already be gotten in ldlm_handle_enqueue() */
2710 if (unlikely(lustre_handle_is_used(&lhc->mlh_reg_lh))) {
2711 struct ptlrpc_request *req = mdt_info_req(info);
2712 struct ldlm_lock *lock;
2714 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
2715 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
2717 /* Lock is pinned by ldlm_handle_enqueue0() as it is
2718 * a resend case, however, it could be already destroyed
2719 * due to client eviction or a raced cancel RPC. */
2720 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx",
2721 lhc->mlh_reg_lh.cookie);
2725 if (!fid_res_name_eq(mdt_object_fid(mo),
2726 &lock->l_resource->lr_name)) {
2727 CWARN("%s: Although resent, but still not "
2728 "get child lock:"DFID"\n",
2729 info->mti_exp->exp_obd->obd_name,
2730 PFID(mdt_object_fid(mo)));
2731 LDLM_LOCK_PUT(lock);
2734 LDLM_LOCK_PUT(lock);
2740 int mdt_remote_object_lock_try(struct mdt_thread_info *mti,
2741 struct mdt_object *o, const struct lu_fid *fid,
2742 struct lustre_handle *lh, enum ldlm_mode mode,
2743 __u64 *ibits, __u64 trybits, bool cache)
2745 struct ldlm_enqueue_info *einfo = &mti->mti_einfo;
2746 union ldlm_policy_data *policy = &mti->mti_policy;
2747 struct ldlm_res_id *res_id = &mti->mti_res_id;
2751 LASSERT(mdt_object_remote(o));
2753 fid_build_reg_res_name(fid, res_id);
2755 memset(einfo, 0, sizeof(*einfo));
2756 einfo->ei_type = LDLM_IBITS;
2757 einfo->ei_mode = mode;
2758 einfo->ei_cb_bl = mdt_remote_blocking_ast;
2759 einfo->ei_cb_cp = ldlm_completion_ast;
2760 einfo->ei_enq_slave = 0;
2761 einfo->ei_res_id = res_id;
2765 * if we cache lock, couple lock with mdt_object, so that object
2766 * can be easily found in lock ASTs.
2768 mdt_object_get(mti->mti_env, o);
2769 einfo->ei_cbdata = o;
2773 memset(policy, 0, sizeof(*policy));
2774 policy->l_inodebits.bits = *ibits;
2775 policy->l_inodebits.try_bits = trybits;
2777 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
2779 if (rc < 0 && cache) {
2780 mdt_object_put(mti->mti_env, o);
2781 einfo->ei_cbdata = NULL;
2784 /* Return successfully acquired bits to a caller */
2786 struct ldlm_lock *lock = ldlm_handle2lock(lh);
2789 *ibits = lock->l_policy_data.l_inodebits.bits;
2790 LDLM_LOCK_PUT(lock);
2795 int mdt_remote_object_lock(struct mdt_thread_info *mti, struct mdt_object *o,
2796 const struct lu_fid *fid, struct lustre_handle *lh,
2797 enum ldlm_mode mode, __u64 ibits, bool cache)
2799 return mdt_remote_object_lock_try(mti, o, fid, lh, mode, &ibits, 0,
2803 static int mdt_object_local_lock(struct mdt_thread_info *info,
2804 struct mdt_object *o,
2805 struct mdt_lock_handle *lh, __u64 *ibits,
2806 __u64 trybits, bool cos_incompat)
2808 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2809 union ldlm_policy_data *policy = &info->mti_policy;
2810 struct ldlm_res_id *res_id = &info->mti_res_id;
2815 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2816 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2817 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2818 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2821 LASSERT(lh->mlh_reg_mode == LCK_PW ||
2822 lh->mlh_reg_mode == LCK_EX);
2823 dlmflags |= LDLM_FL_COS_INCOMPAT;
2824 } else if (mdt_cos_is_enabled(info->mti_mdt)) {
2825 dlmflags |= LDLM_FL_COS_ENABLED;
2828 /* Only enqueue LOOKUP lock for remote object */
2829 if (mdt_object_remote(o)) {
2830 LASSERT(*ibits == MDS_INODELOCK_LOOKUP);
2833 if (lh->mlh_type == MDT_PDO_LOCK) {
2834 /* check for exists after object is locked */
2835 if (mdt_object_exists(o) == 0) {
2836 /* Non-existent object shouldn't have PDO lock */
2839 /* Non-dir object shouldn't have PDO lock */
2840 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
2846 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2847 dlmflags |= LDLM_FL_ATOMIC_CB;
2850 * Take PDO lock on whole directory and build correct @res_id for lock
2851 * on part of directory.
2853 if (lh->mlh_pdo_hash != 0) {
2854 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2855 mdt_lock_pdo_mode(info, o, lh);
2856 if (lh->mlh_pdo_mode != LCK_NL) {
2858 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2859 * is never going to be sent to client and we do not
2860 * want it slowed down due to possible cancels.
2862 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2863 policy->l_inodebits.try_bits = 0;
2864 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2865 policy, res_id, dlmflags,
2866 info->mti_exp == NULL ? NULL :
2867 &info->mti_exp->exp_handle.h_cookie);
2868 if (unlikely(rc != 0))
2869 GOTO(out_unlock, rc);
2873 * Finish res_id initializing by name hash marking part of
2874 * directory which is taking modification.
2876 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2879 policy->l_inodebits.bits = *ibits;
2880 policy->l_inodebits.try_bits = trybits;
2883 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2884 * going to be sent to client. If it is - mdt_intent_policy() path will
2885 * fix it up and turn FL_LOCAL flag off.
2887 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2888 res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
2889 info->mti_exp == NULL ? NULL :
2890 &info->mti_exp->exp_handle.h_cookie);
2893 mdt_object_unlock(info, o, lh, 1);
2894 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2895 lh->mlh_pdo_hash != 0 &&
2896 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
2897 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2899 /* Return successfully acquired bits to a caller */
2901 struct ldlm_lock *lock = ldlm_handle2lock(&lh->mlh_reg_lh);
2904 *ibits = lock->l_policy_data.l_inodebits.bits;
2905 LDLM_LOCK_PUT(lock);
2911 mdt_object_lock_internal(struct mdt_thread_info *info, struct mdt_object *o,
2912 struct mdt_lock_handle *lh, __u64 *ibits,
2913 __u64 trybits, bool cos_incompat)
2915 struct mdt_lock_handle *local_lh = NULL;
2919 if (!mdt_object_remote(o)) {
2920 rc = mdt_object_local_lock(info, o, lh, ibits, trybits,
2925 /* XXX do not support PERM/LAYOUT/XATTR lock for remote object yet */
2926 *ibits &= ~(MDS_INODELOCK_PERM | MDS_INODELOCK_LAYOUT |
2927 MDS_INODELOCK_XATTR);
2929 /* Only enqueue LOOKUP lock for remote object */
2930 if (*ibits & MDS_INODELOCK_LOOKUP) {
2931 __u64 local = MDS_INODELOCK_LOOKUP;
2933 rc = mdt_object_local_lock(info, o, lh, &local, 0,
2941 if ((*ibits | trybits) & MDS_INODELOCK_UPDATE) {
2942 /* Sigh, PDO needs to enqueue 2 locks right now, but
2943 * enqueue RPC can only request 1 lock, to avoid extra
2944 * RPC, so it will instead enqueue EX lock for remote
2945 * object anyway XXX*/
2946 if (lh->mlh_type == MDT_PDO_LOCK &&
2947 lh->mlh_pdo_hash != 0) {
2948 CDEBUG(D_INFO, "%s: "DFID" convert PDO lock to"
2949 "EX lock.\n", mdt_obd_name(info->mti_mdt),
2950 PFID(mdt_object_fid(o)));
2951 lh->mlh_pdo_hash = 0;
2952 lh->mlh_rreg_mode = LCK_EX;
2953 lh->mlh_type = MDT_REG_LOCK;
2956 rc = mdt_remote_object_lock_try(info, o, mdt_object_fid(o),
2959 ibits, trybits, false);
2960 if (rc != ELDLM_OK) {
2961 if (local_lh != NULL)
2962 mdt_object_unlock(info, o, local_lh, rc);
2970 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2971 struct mdt_lock_handle *lh, __u64 ibits)
2973 return mdt_object_lock_internal(info, o, lh, &ibits, 0, false);
2976 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2977 struct mdt_lock_handle *lh, __u64 ibits,
2980 LASSERT(lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX);
2981 return mdt_object_lock_internal(info, o, lh, &ibits, 0,
2985 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
2986 struct mdt_lock_handle *lh, __u64 *ibits,
2987 __u64 trybits, bool cos_incompat)
2989 return mdt_object_lock_internal(info, o, lh, ibits, trybits,
2994 * Save a lock within request object.
2996 * Keep the lock referenced until whether client ACK or transaction
2997 * commit happens or release the lock immediately depending on input
2998 * parameters. If COS is ON, a write lock is converted to COS lock
3001 * \param info thead info object
3002 * \param h lock handle
3003 * \param mode lock mode
3004 * \param decref force immediate lock releasing
3006 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
3007 enum ldlm_mode mode, int decref)
3011 if (lustre_handle_is_used(h)) {
3012 if (decref || !info->mti_has_trans ||
3013 !(mode & (LCK_PW | LCK_EX))) {
3014 mdt_fid_unlock(h, mode);
3016 struct mdt_device *mdt = info->mti_mdt;
3017 struct ldlm_lock *lock = ldlm_handle2lock(h);
3018 struct ptlrpc_request *req = mdt_info_req(info);
3019 bool cos = mdt_cos_is_enabled(mdt);
3020 bool convert_lock = !cos && mdt_slc_is_enabled(mdt);
3022 LASSERTF(lock != NULL, "no lock for cookie %#llx\n",
3025 /* there is no request if mdt_object_unlock() is called
3026 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
3027 if (likely(req != NULL)) {
3028 LDLM_DEBUG(lock, "save lock request %p reply "
3029 "state %p transno %lld\n", req,
3030 req->rq_reply_state, req->rq_transno);
3032 ldlm_lock_downgrade(lock, LCK_COS);
3035 if (req->rq_export->exp_disconnected)
3036 mdt_fid_unlock(h, mode);
3038 ptlrpc_save_lock(req, h, mode, cos,
3041 mdt_fid_unlock(h, mode);
3043 if (mdt_is_lock_sync(lock)) {
3044 CDEBUG(D_HA, "found sync-lock,"
3045 " async commit started\n");
3046 mdt_device_commit_async(info->mti_env,
3049 LDLM_LOCK_PUT(lock);
3058 * Save cross-MDT lock in uncommitted_slc_locks
3060 * Keep the lock referenced until transaction commit happens or release the lock
3061 * immediately depending on input parameters.
3063 * \param info thead info object
3064 * \param h lock handle
3065 * \param mode lock mode
3066 * \param decref force immediate lock releasing
3068 static void mdt_save_remote_lock(struct mdt_thread_info *info,
3069 struct mdt_object *o, struct lustre_handle *h,
3070 enum ldlm_mode mode, int decref)
3074 if (lustre_handle_is_used(h)) {
3075 struct ldlm_lock *lock = ldlm_handle2lock(h);
3078 (lock->l_policy_data.l_inodebits.bits &
3079 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)))
3080 mo_invalidate(info->mti_env, mdt_object_child(o));
3082 if (decref || !info->mti_has_trans ||
3083 !(mode & (LCK_PW | LCK_EX))) {
3084 ldlm_lock_decref_and_cancel(h, mode);
3085 LDLM_LOCK_PUT(lock);
3087 struct ptlrpc_request *req = mdt_info_req(info);
3089 LASSERT(req != NULL);
3090 tgt_save_slc_lock(&info->mti_mdt->mdt_lut, lock,
3092 ldlm_lock_decref(h, mode);
3101 * Unlock mdt object.
3103 * Immeditely release the regular lock and the PDO lock or save the
3104 * lock in request and keep them referenced until client ACK or
3105 * transaction commit.
3107 * \param info thread info object
3108 * \param o mdt object
3109 * \param lh mdt lock handle referencing regular and PDO locks
3110 * \param decref force immediate lock releasing
3112 * XXX o is not used and may be NULL, see hsm_cdt_request_completed().
3114 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
3115 struct mdt_lock_handle *lh, int decref)
3119 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
3120 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
3121 mdt_save_remote_lock(info, o, &lh->mlh_rreg_lh, lh->mlh_rreg_mode,
3127 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
3128 const struct lu_fid *f,
3129 struct mdt_lock_handle *lh,
3132 struct mdt_object *o;
3134 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
3138 rc = mdt_object_lock(info, o, lh, ibits);
3140 mdt_object_put(info->mti_env, o);
3147 void mdt_object_unlock_put(struct mdt_thread_info * info,
3148 struct mdt_object * o,
3149 struct mdt_lock_handle *lh,
3152 mdt_object_unlock(info, o, lh, decref);
3153 mdt_object_put(info->mti_env, o);
3157 * Generic code handling requests that have struct mdt_body passed in:
3159 * - extract mdt_body from request and save it in @info, if present;
3161 * - create lu_object, corresponding to the fid in mdt_body, and save it in
3164 * - if HABEO_CORPUS flag is set for this request type check whether object
3165 * actually exists on storage (lu_object_exists()).
3168 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
3170 const struct mdt_body *body;
3171 struct mdt_object *obj;
3172 const struct lu_env *env;
3173 struct req_capsule *pill;
3177 env = info->mti_env;
3178 pill = info->mti_pill;
3180 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
3184 if (!(body->mbo_valid & OBD_MD_FLID))
3187 if (!fid_is_sane(&body->mbo_fid1)) {
3188 CERROR("Invalid fid: "DFID"\n", PFID(&body->mbo_fid1));
3192 obj = mdt_object_find(env, info->mti_mdt, &body->mbo_fid1);
3194 if ((flags & HABEO_CORPUS) && !mdt_object_exists(obj)) {
3195 mdt_object_put(env, obj);
3198 info->mti_object = obj;
3207 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
3209 struct req_capsule *pill = info->mti_pill;
3213 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
3214 rc = mdt_body_unpack(info, flags);
3218 if (rc == 0 && (flags & HABEO_REFERO)) {
3220 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
3221 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
3223 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
3224 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
3227 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
3228 * by default. If the target object has more ACL entries, then
3229 * enlarge the buffer when necessary. */
3230 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
3231 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
3232 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
3234 rc = req_capsule_server_pack(pill);
3239 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
3241 lh->mlh_type = MDT_NUL_LOCK;
3242 lh->mlh_reg_lh.cookie = 0ull;
3243 lh->mlh_reg_mode = LCK_MINMODE;
3244 lh->mlh_pdo_lh.cookie = 0ull;
3245 lh->mlh_pdo_mode = LCK_MINMODE;
3246 lh->mlh_rreg_lh.cookie = 0ull;
3247 lh->mlh_rreg_mode = LCK_MINMODE;
3250 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
3252 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3253 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3257 * Initialize fields of struct mdt_thread_info. Other fields are left in
3258 * uninitialized state, because it's too expensive to zero out whole
3259 * mdt_thread_info (> 1K) on each request arrival.
3261 void mdt_thread_info_init(struct ptlrpc_request *req,
3262 struct mdt_thread_info *info)
3266 info->mti_pill = &req->rq_pill;
3269 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3270 mdt_lock_handle_init(&info->mti_lh[i]);
3272 /* mdt device: it can be NULL while CONNECT */
3273 if (req->rq_export) {
3274 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
3275 info->mti_exp = req->rq_export;
3277 info->mti_mdt = NULL;
3278 info->mti_env = req->rq_svc_thread->t_env;
3279 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
3281 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
3282 info->mti_big_buf = LU_BUF_NULL;
3283 info->mti_body = NULL;
3284 info->mti_object = NULL;
3285 info->mti_dlm_req = NULL;
3286 info->mti_has_trans = 0;
3287 info->mti_cross_ref = 0;
3288 info->mti_opdata = 0;
3289 info->mti_big_lmm_used = 0;
3290 info->mti_big_acl_used = 0;
3291 info->mti_som_valid = 0;
3293 info->mti_spec.no_create = 0;
3294 info->mti_spec.sp_rm_entry = 0;
3295 info->mti_spec.sp_permitted = 0;
3296 info->mti_spec.sp_migrate_close = 0;
3298 info->mti_spec.u.sp_ea.eadata = NULL;
3299 info->mti_spec.u.sp_ea.eadatalen = 0;
3302 void mdt_thread_info_fini(struct mdt_thread_info *info)
3306 if (info->mti_object != NULL) {
3307 mdt_object_put(info->mti_env, info->mti_object);
3308 info->mti_object = NULL;
3311 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3312 mdt_lock_handle_fini(&info->mti_lh[i]);
3313 info->mti_env = NULL;
3314 info->mti_pill = NULL;
3315 info->mti_exp = NULL;
3317 if (unlikely(info->mti_big_buf.lb_buf != NULL))
3318 lu_buf_free(&info->mti_big_buf);
3321 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
3323 struct mdt_thread_info *mti;
3325 mti = mdt_th_info(tsi->tsi_env);
3326 LASSERT(mti != NULL);
3328 mdt_thread_info_init(tgt_ses_req(tsi), mti);
3329 if (tsi->tsi_corpus != NULL) {
3330 mti->mti_object = mdt_obj(tsi->tsi_corpus);
3331 lu_object_get(tsi->tsi_corpus);
3333 mti->mti_body = tsi->tsi_mdt_body;
3334 mti->mti_dlm_req = tsi->tsi_dlm_req;
3339 static int mdt_tgt_connect(struct tgt_session_info *tsi)
3341 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_DELAY_CONDITIONAL) &&
3343 tsi2mdt_info(tsi)->mti_mdt->mdt_seq_site.ss_node_id) {
3344 set_current_state(TASK_UNINTERRUPTIBLE);
3345 schedule_timeout(msecs_to_jiffies(3 * MSEC_PER_SEC));
3348 return tgt_connect(tsi);
3368 static int mdt_intent_getattr(enum mdt_it_code opcode,
3369 struct mdt_thread_info *info,
3370 struct ldlm_lock **, __u64);
3372 static int mdt_intent_getxattr(enum mdt_it_code opcode,
3373 struct mdt_thread_info *info,
3374 struct ldlm_lock **lockp,
3377 static int mdt_intent_layout(enum mdt_it_code opcode,
3378 struct mdt_thread_info *info,
3379 struct ldlm_lock **,
3381 static int mdt_intent_reint(enum mdt_it_code opcode,
3382 struct mdt_thread_info *info,
3383 struct ldlm_lock **,
3385 static int mdt_intent_glimpse(enum mdt_it_code opcode,
3386 struct mdt_thread_info *info,
3387 struct ldlm_lock **lockp, __u64 flags)
3389 return mdt_glimpse_enqueue(info, info->mti_mdt->mdt_namespace,
3392 static int mdt_intent_brw(enum mdt_it_code opcode,
3393 struct mdt_thread_info *info,
3394 struct ldlm_lock **lockp, __u64 flags)
3396 return mdt_brw_enqueue(info, info->mti_mdt->mdt_namespace,
3400 static struct mdt_it_flavor {
3401 const struct req_format *it_fmt;
3403 int (*it_act)(enum mdt_it_code ,
3404 struct mdt_thread_info *,
3405 struct ldlm_lock **,
3408 } mdt_it_flavor[] = {
3410 .it_fmt = &RQF_LDLM_INTENT,
3411 /*.it_flags = HABEO_REFERO,*/
3413 .it_act = mdt_intent_reint,
3414 .it_reint = REINT_OPEN
3417 .it_fmt = &RQF_LDLM_INTENT,
3419 * OCREAT is not a MUTABOR request as if the file
3421 * We do the extra check of OBD_CONNECT_RDONLY in
3422 * mdt_reint_open() when we really need to create
3426 .it_act = mdt_intent_reint,
3427 .it_reint = REINT_OPEN
3430 .it_fmt = &RQF_LDLM_INTENT,
3431 .it_flags = MUTABOR,
3432 .it_act = mdt_intent_reint,
3433 .it_reint = REINT_CREATE
3435 [MDT_IT_GETATTR] = {
3436 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3437 .it_flags = HABEO_REFERO,
3438 .it_act = mdt_intent_getattr
3440 [MDT_IT_READDIR] = {
3446 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3447 .it_flags = HABEO_REFERO,
3448 .it_act = mdt_intent_getattr
3451 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
3452 .it_flags = MUTABOR,
3454 .it_reint = REINT_UNLINK
3458 .it_flags = MUTABOR,
3461 [MDT_IT_GETXATTR] = {
3462 .it_fmt = &RQF_LDLM_INTENT_GETXATTR,
3463 .it_flags = HABEO_CORPUS,
3464 .it_act = mdt_intent_getxattr
3467 .it_fmt = &RQF_LDLM_INTENT_LAYOUT,
3469 .it_act = mdt_intent_layout
3471 [MDT_IT_GLIMPSE] = {
3472 .it_fmt = &RQF_LDLM_INTENT,
3474 .it_act = mdt_intent_glimpse,
3477 .it_fmt = &RQF_LDLM_INTENT,
3479 .it_act = mdt_intent_brw,
3484 int mdt_intent_lock_replace(struct mdt_thread_info *info,
3485 struct ldlm_lock **lockp,
3486 struct mdt_lock_handle *lh,
3487 __u64 flags, int result)
3489 struct ptlrpc_request *req = mdt_info_req(info);
3490 struct ldlm_lock *lock = *lockp;
3491 struct ldlm_lock *new_lock;
3493 /* If possible resent found a lock, @lh is set to its handle */
3494 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3496 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3497 lh->mlh_reg_lh.cookie = 0;
3501 if (new_lock == NULL && (flags & LDLM_FL_RESENT)) {
3502 /* Lock is pinned by ldlm_handle_enqueue0() as it is
3503 * a resend case, however, it could be already destroyed
3504 * due to client eviction or a raced cancel RPC. */
3505 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx\n",
3506 lh->mlh_reg_lh.cookie);
3507 lh->mlh_reg_lh.cookie = 0;
3511 LASSERTF(new_lock != NULL,
3512 "lockh %#llx flags %#llx : rc = %d\n",
3513 lh->mlh_reg_lh.cookie, flags, result);
3516 * If we've already given this lock to a client once, then we should
3517 * have no readers or writers. Otherwise, we should have one reader
3518 * _or_ writer ref (which will be zeroed below) before returning the
3521 if (new_lock->l_export == req->rq_export) {
3522 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3524 LASSERT(new_lock->l_export == NULL);
3525 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3530 if (new_lock->l_export == req->rq_export) {
3532 * Already gave this to the client, which means that we
3533 * reconstructed a reply.
3535 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3538 LDLM_LOCK_RELEASE(new_lock);
3539 lh->mlh_reg_lh.cookie = 0;
3540 RETURN(ELDLM_LOCK_REPLACED);
3544 * Fixup the lock to be given to the client.
3546 lock_res_and_lock(new_lock);
3547 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3548 * possible blocking AST. */
3549 while (new_lock->l_readers > 0) {
3550 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3551 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3552 new_lock->l_readers--;
3554 while (new_lock->l_writers > 0) {
3555 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3556 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3557 new_lock->l_writers--;
3560 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3561 new_lock->l_blocking_ast = lock->l_blocking_ast;
3562 new_lock->l_completion_ast = lock->l_completion_ast;
3563 if (ldlm_has_dom(new_lock))
3564 new_lock->l_glimpse_ast = ldlm_server_glimpse_ast;
3565 new_lock->l_remote_handle = lock->l_remote_handle;
3566 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3568 unlock_res_and_lock(new_lock);
3570 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3571 &new_lock->l_remote_handle,
3572 &new_lock->l_exp_hash);
3574 LDLM_LOCK_RELEASE(new_lock);
3575 lh->mlh_reg_lh.cookie = 0;
3577 RETURN(ELDLM_LOCK_REPLACED);
3580 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3581 struct ldlm_lock *new_lock,
3582 struct mdt_lock_handle *lh, __u64 flags)
3584 struct ptlrpc_request *req = mdt_info_req(info);
3585 struct ldlm_request *dlmreq;
3587 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3590 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3592 /* Check if this is a resend case (MSG_RESENT is set on RPC) and a
3593 * lock was found by ldlm_handle_enqueue(); if so @lh must be
3595 if (flags & LDLM_FL_RESENT) {
3596 lh->mlh_reg_lh.cookie = new_lock->l_handle.h_cookie;
3597 lh->mlh_reg_mode = new_lock->l_granted_mode;
3599 LDLM_DEBUG(new_lock, "Restoring lock cookie");
3600 DEBUG_REQ(D_DLMTRACE, req, "restoring lock cookie %#llx",
3601 lh->mlh_reg_lh.cookie);
3606 * If the xid matches, then we know this is a resent request, and allow
3607 * it. (It's probably an OPEN, for which we don't send a lock.
3609 if (req_can_reconstruct(req, NULL))
3613 * This remote handle isn't enqueued, so we never received or processed
3614 * this request. Clear MSG_RESENT, because it can be handled like any
3615 * normal request now.
3617 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3619 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle %#llx",
3620 dlmreq->lock_handle[0].cookie);
3623 static int mdt_intent_getxattr(enum mdt_it_code opcode,
3624 struct mdt_thread_info *info,
3625 struct ldlm_lock **lockp,
3628 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3629 struct ldlm_reply *ldlm_rep = NULL;
3634 * Initialize lhc->mlh_reg_lh either from a previously granted lock
3635 * (for the resend case) or a new lock. Below we will use it to
3636 * replace the original lock.
3638 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3639 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3640 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
3641 rc = mdt_object_lock(info, info->mti_object, lhc,
3642 MDS_INODELOCK_XATTR);
3647 rc = mdt_getxattr(info);
3649 if (mdt_info_req(info)->rq_repmsg != NULL)
3650 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3652 if (ldlm_rep == NULL ||
3653 OBD_FAIL_CHECK(OBD_FAIL_MDS_XATTR_REP)) {
3654 mdt_object_unlock(info, info->mti_object, lhc, 1);
3655 RETURN(err_serious(-EFAULT));
3658 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3660 /* This is left for interop instead of adding a new interop flag.
3662 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(3, 0, 0, 0)
3663 if (ldlm_rep->lock_policy_res2) {
3664 mdt_object_unlock(info, info->mti_object, lhc, 1);
3665 RETURN(ELDLM_LOCK_ABORTED);
3669 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3673 static int mdt_intent_getattr(enum mdt_it_code opcode,
3674 struct mdt_thread_info *info,
3675 struct ldlm_lock **lockp,
3678 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3680 struct ldlm_reply *ldlm_rep;
3681 struct mdt_body *reqbody;
3682 struct mdt_body *repbody;
3686 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3689 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3692 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
3693 repbody->mbo_eadatasize = 0;
3694 repbody->mbo_aclsize = 0;
3698 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
3700 case MDT_IT_GETATTR:
3701 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
3705 CERROR("Unsupported intent (%d)\n", opcode);
3706 GOTO(out_shrink, rc = -EINVAL);
3709 rc = mdt_init_ucred_intent_getattr(info, reqbody);
3711 GOTO(out_shrink, rc);
3713 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3714 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3716 /* Get lock from request for possible resent case. */
3717 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3719 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3720 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3722 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3723 ldlm_rep->lock_policy_res2 = 0;
3724 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3725 ldlm_rep->lock_policy_res2) {
3726 lhc->mlh_reg_lh.cookie = 0ull;
3727 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3730 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3733 mdt_exit_ucred(info);
3735 mdt_client_compatibility(info);
3736 rc2 = mdt_fix_reply(info);
3742 static int mdt_intent_layout(enum mdt_it_code opcode,
3743 struct mdt_thread_info *info,
3744 struct ldlm_lock **lockp,
3747 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_LAYOUT];
3748 struct layout_intent *layout;
3750 struct mdt_object *obj = NULL;
3751 bool layout_change = false;
3752 int layout_size = 0;
3756 if (opcode != MDT_IT_LAYOUT) {
3757 CERROR("%s: Unknown intent (%d)\n", mdt_obd_name(info->mti_mdt),
3762 layout = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
3766 switch (layout->li_opc) {
3767 case LAYOUT_INTENT_TRUNC:
3768 case LAYOUT_INTENT_WRITE:
3769 layout_change = true;
3771 case LAYOUT_INTENT_ACCESS:
3773 case LAYOUT_INTENT_READ:
3774 case LAYOUT_INTENT_GLIMPSE:
3775 case LAYOUT_INTENT_RELEASE:
3776 case LAYOUT_INTENT_RESTORE:
3777 CERROR("%s: Unsupported layout intent opc %d\n",
3778 mdt_obd_name(info->mti_mdt), layout->li_opc);
3782 CERROR("%s: Unknown layout intent opc %d\n",
3783 mdt_obd_name(info->mti_mdt), layout->li_opc);
3790 fid = &info->mti_tmp_fid2;
3791 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
3793 /* Get lock from request for possible resent case. */
3794 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3796 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
3798 GOTO(out, rc = PTR_ERR(obj));
3800 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
3801 layout_size = mdt_attr_get_eabuf_size(info, obj);
3802 if (layout_size < 0)
3803 GOTO(out_obj, rc = layout_size);
3805 if (layout_size > info->mti_mdt->mdt_max_mdsize)
3806 info->mti_mdt->mdt_max_mdsize = layout_size;
3810 * set reply buffer size, so that ldlm_handle_enqueue0()->
3811 * ldlm_lvbo_fill() will fill the reply buffer with lovea.
3813 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
3814 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
3816 rc = req_capsule_server_pack(info->mti_pill);
3821 if (layout_change) {
3822 struct lu_buf *buf = &info->mti_buf;
3825 * mdt_layout_change is a reint operation, when the request
3826 * is resent, layout write shouldn't reprocess it again.
3828 rc = mdt_check_resent(info, mdt_reconstruct_generic, lhc);
3830 GOTO(out_obj, rc = rc < 0 ? rc : 0);
3833 * There is another resent case: the client's job has been
3834 * done by another client, referring lod_declare_layout_change
3835 * -EALREADY case, and it became a operation w/o transaction,
3836 * so we should not do the layout change, otherwise
3837 * mdt_layout_change() will try to cancel the granted server
3838 * CR lock whose remote counterpart is still in hold on the
3839 * client, and a deadlock ensues.
3841 rc = mdt_check_resent_lock(info, obj, lhc);
3847 if (unlikely(req_is_replay(mdt_info_req(info)))) {
3848 buf->lb_buf = req_capsule_client_get(info->mti_pill,
3850 buf->lb_len = req_capsule_get_size(info->mti_pill,
3851 &RMF_EADATA, RCL_CLIENT);
3853 * If it's a replay of layout write intent RPC, the
3854 * client has saved the extended lovea when
3855 * it get reply then.
3857 if (buf->lb_len > 0)
3858 mdt_fix_lov_magic(info, buf->lb_buf);
3862 * Instantiate some layout components, if @buf contains
3863 * lovea, then it's a replay of the layout intent write
3866 rc = mdt_layout_change(info, obj, layout, buf);
3871 mdt_object_put(info->mti_env, obj);
3873 if (rc == 0 && lustre_handle_is_used(&lhc->mlh_reg_lh))
3874 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3877 lhc->mlh_reg_lh.cookie = 0;
3882 static int mdt_intent_reint(enum mdt_it_code opcode,
3883 struct mdt_thread_info *info,
3884 struct ldlm_lock **lockp,
3887 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3888 struct ldlm_reply *rep = NULL;
3892 static const struct req_format *intent_fmts[REINT_MAX] = {
3893 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3894 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3899 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
3903 if (mdt_it_flavor[opcode].it_reint != opc) {
3904 CERROR("Reint code %ld doesn't match intent: %d\n",
3906 RETURN(err_serious(-EPROTO));
3909 /* Get lock from request for possible resent case. */
3910 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3912 rc = mdt_reint_internal(info, lhc, opc);
3914 /* Check whether the reply has been packed successfully. */
3915 if (mdt_info_req(info)->rq_repmsg != NULL)
3916 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3918 RETURN(err_serious(-EFAULT));
3920 /* MDC expects this in any case */
3922 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3924 /* the open lock or the lock for cross-ref object should be
3925 * returned to the client */
3926 if (lustre_handle_is_used(&lhc->mlh_reg_lh) &&
3927 (rc == 0 || rc == -MDT_EREMOTE_OPEN)) {
3928 rep->lock_policy_res2 = 0;
3929 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3933 rep->lock_policy_res2 = clear_serious(rc);
3935 if (rep->lock_policy_res2 == -ENOENT &&
3936 mdt_get_disposition(rep, DISP_LOOKUP_NEG) &&
3937 !mdt_get_disposition(rep, DISP_OPEN_CREATE))
3938 rep->lock_policy_res2 = 0;
3940 lhc->mlh_reg_lh.cookie = 0ull;
3941 if (rc == -ENOTCONN || rc == -ENODEV ||
3942 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3944 * If it is the disconnect error (ENODEV & ENOCONN), the error
3945 * will be returned by rq_status, and client at ptlrpc layer
3946 * will detect this, then disconnect, reconnect the import
3947 * immediately, instead of impacting the following the rpc.
3952 * For other cases, the error will be returned by intent, and client
3953 * will retrieve the result from intent.
3955 RETURN(ELDLM_LOCK_ABORTED);
3958 static int mdt_intent_code(enum ldlm_intent_flags itcode)
3966 case IT_OPEN|IT_CREAT:
3973 rc = MDT_IT_READDIR;
3976 rc = MDT_IT_GETATTR;
3988 rc = MDT_IT_GETXATTR;
3993 case IT_QUOTA_DQACQ:
3998 rc = MDT_IT_GLIMPSE;
4004 CERROR("Unknown intent opcode: 0x%08x\n", itcode);
4011 static int mdt_intent_opc(enum ldlm_intent_flags itopc,
4012 struct mdt_thread_info *info,
4013 struct ldlm_lock **lockp, __u64 flags)
4015 struct req_capsule *pill = info->mti_pill;
4016 struct ptlrpc_request *req = mdt_info_req(info);
4017 struct mdt_it_flavor *flv;
4022 opc = mdt_intent_code(itopc);
4026 if (opc == MDT_IT_QUOTA) {
4027 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
4030 RETURN(-EOPNOTSUPP);
4032 if (mdt_rdonly(req->rq_export))
4035 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
4036 /* pass the request to quota master */
4037 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
4038 mdt_info_req(info), lockp,
4043 flv = &mdt_it_flavor[opc];
4044 if (flv->it_fmt != NULL)
4045 req_capsule_extend(pill, flv->it_fmt);
4047 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
4051 if (flv->it_flags & MUTABOR && mdt_rdonly(req->rq_export))
4054 if (flv->it_act != NULL) {
4055 struct ldlm_reply *rep;
4057 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_INTENT_DELAY, 10);
4059 /* execute policy */
4060 rc = flv->it_act(opc, info, lockp, flags);
4062 /* Check whether the reply has been packed successfully. */
4063 if (req->rq_repmsg != NULL) {
4064 rep = req_capsule_server_get(info->mti_pill,
4066 rep->lock_policy_res2 =
4067 ptlrpc_status_hton(rep->lock_policy_res2);
4074 static void mdt_ptlrpc_stats_update(struct ptlrpc_request *req,
4075 enum ldlm_intent_flags it_opc)
4077 struct lprocfs_stats *srv_stats = ptlrpc_req2svc(req)->srv_stats;
4079 /* update stats when IT code is known */
4080 if (srv_stats != NULL)
4081 lprocfs_counter_incr(srv_stats,
4082 PTLRPC_LAST_CNTR + (it_opc == IT_GLIMPSE ?
4083 LDLM_GLIMPSE_ENQUEUE : LDLM_IBITS_ENQUEUE));
4086 static int mdt_intent_policy(struct ldlm_namespace *ns,
4087 struct ldlm_lock **lockp, void *req_cookie,
4088 enum ldlm_mode mode, __u64 flags, void *data)
4090 struct tgt_session_info *tsi;
4091 struct mdt_thread_info *info;
4092 struct ptlrpc_request *req = req_cookie;
4093 struct ldlm_intent *it;
4094 struct req_capsule *pill;
4095 const struct ldlm_lock_desc *ldesc;
4100 LASSERT(req != NULL);
4102 tsi = tgt_ses_info(req->rq_svc_thread->t_env);
4104 info = tsi2mdt_info(tsi);
4105 LASSERT(info != NULL);
4106 pill = info->mti_pill;
4107 LASSERT(pill->rc_req == req);
4108 ldesc = &info->mti_dlm_req->lock_desc;
4110 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
4111 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
4112 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
4114 mdt_ptlrpc_stats_update(req, it->opc);
4115 rc = mdt_intent_opc(it->opc, info, lockp, flags);
4119 /* Lock without inodebits makes no sense and will oops
4120 * later in ldlm. Let's check it now to see if we have
4121 * ibits corrupted somewhere in mdt_intent_opc().
4122 * The case for client miss to set ibits has been
4123 * processed by others. */
4124 LASSERT(ergo(ldesc->l_resource.lr_type == LDLM_IBITS,
4125 ldesc->l_policy_data.l_inodebits.bits != 0));
4127 rc = err_serious(-EFAULT);
4130 /* No intent was provided */
4131 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
4132 rc = req_capsule_server_pack(pill);
4134 rc = err_serious(rc);
4136 mdt_thread_info_fini(info);
4140 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
4142 struct seq_server_site *ss = mdt_seq_site(mdt);
4144 if (ss->ss_node_id == 0)
4147 if (ss->ss_client_seq != NULL) {
4148 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
4149 ss->ss_client_seq->lcs_exp = NULL;
4152 if (ss->ss_server_fld != NULL) {
4153 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
4154 ss->ss_server_fld->lsf_control_exp = NULL;
4158 static void mdt_seq_fini_cli(struct mdt_device *mdt)
4160 struct seq_server_site *ss = mdt_seq_site(mdt);
4165 if (ss->ss_server_seq != NULL)
4166 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
4169 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
4171 mdt_seq_fini_cli(mdt);
4172 mdt_deregister_seq_exp(mdt);
4174 return seq_site_fini(env, mdt_seq_site(mdt));
4178 * It will retrieve its FLDB entries from MDT0, and it only happens
4179 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
4180 * and it needs to refresh FLDB from the MDT0.
4182 static int mdt_register_lwp_callback(void *data)
4185 struct mdt_device *mdt = data;
4186 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
4190 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
4192 rc = lu_env_init(&env, LCT_MD_THREAD);
4194 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
4198 /* Allocate new sequence now to avoid creating local transaction
4199 * in the normal transaction process */
4200 rc = seq_server_check_and_alloc_super(&env,
4201 mdt_seq_site(mdt)->ss_server_seq);
4206 rc = fld_update_from_controller(&env, fld);
4208 CERROR("%s: cannot update controller: rc = %d\n",
4209 mdt_obd_name(mdt), rc);
4218 static int mdt_register_seq_exp(struct mdt_device *mdt)
4220 struct seq_server_site *ss = mdt_seq_site(mdt);
4221 char *lwp_name = NULL;
4224 if (ss->ss_node_id == 0)
4227 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
4228 if (lwp_name == NULL)
4229 GOTO(out_free, rc = -ENOMEM);
4231 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
4235 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
4240 rc = lustre_register_lwp_item(lwp_name,
4241 &ss->ss_server_fld->lsf_control_exp,
4242 mdt_register_lwp_callback, mdt);
4244 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
4245 ss->ss_client_seq->lcs_exp = NULL;
4249 if (lwp_name != NULL)
4250 OBD_FREE(lwp_name, MAX_OBD_NAME);
4256 * Init client sequence manager which is used by local MDS to talk to sequence
4257 * controller on remote node.
4259 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
4261 struct seq_server_site *ss = mdt_seq_site(mdt);
4266 /* check if this is adding the first MDC and controller is not yet
4268 OBD_ALLOC_PTR(ss->ss_client_seq);
4269 if (ss->ss_client_seq == NULL)
4272 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
4273 if (prefix == NULL) {
4274 OBD_FREE_PTR(ss->ss_client_seq);
4275 ss->ss_client_seq = NULL;
4279 /* Note: seq_client_fini will be called in seq_site_fini */
4280 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
4281 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
4282 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
4284 OBD_FREE(prefix, MAX_OBD_NAME + 5);
4286 OBD_FREE_PTR(ss->ss_client_seq);
4287 ss->ss_client_seq = NULL;
4291 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
4296 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
4298 struct seq_server_site *ss;
4302 ss = mdt_seq_site(mdt);
4303 /* init sequence controller server(MDT0) */
4304 if (ss->ss_node_id == 0) {
4305 OBD_ALLOC_PTR(ss->ss_control_seq);
4306 if (ss->ss_control_seq == NULL)
4309 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
4310 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
4313 GOTO(out_seq_fini, rc);
4316 /* Init normal sequence server */
4317 OBD_ALLOC_PTR(ss->ss_server_seq);
4318 if (ss->ss_server_seq == NULL)
4319 GOTO(out_seq_fini, rc = -ENOMEM);
4321 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
4322 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
4324 GOTO(out_seq_fini, rc);
4326 /* init seq client for seq server to talk to seq controller(MDT0) */
4327 rc = mdt_seq_init_cli(env, mdt);
4329 GOTO(out_seq_fini, rc);
4331 if (ss->ss_node_id != 0)
4332 /* register controller export through lwp */
4333 rc = mdt_register_seq_exp(mdt);
4338 mdt_seq_fini(env, mdt);
4346 static int mdt_fld_fini(const struct lu_env *env,
4347 struct mdt_device *m)
4349 struct seq_server_site *ss = mdt_seq_site(m);
4352 if (ss && ss->ss_server_fld) {
4353 fld_server_fini(env, ss->ss_server_fld);
4354 OBD_FREE_PTR(ss->ss_server_fld);
4355 ss->ss_server_fld = NULL;
4361 static int mdt_fld_init(const struct lu_env *env,
4363 struct mdt_device *m)
4365 struct seq_server_site *ss;
4369 ss = mdt_seq_site(m);
4371 OBD_ALLOC_PTR(ss->ss_server_fld);
4372 if (ss->ss_server_fld == NULL)
4373 RETURN(rc = -ENOMEM);
4375 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
4378 OBD_FREE_PTR(ss->ss_server_fld);
4379 ss->ss_server_fld = NULL;
4386 static void mdt_stack_pre_fini(const struct lu_env *env,
4387 struct mdt_device *m, struct lu_device *top)
4389 struct lustre_cfg_bufs *bufs;
4390 struct lustre_cfg *lcfg;
4391 struct mdt_thread_info *info;
4396 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4397 LASSERT(info != NULL);
4399 bufs = &info->mti_u.bufs;
4401 LASSERT(m->mdt_child_exp);
4402 LASSERT(m->mdt_child_exp->exp_obd);
4404 /* process cleanup, pass mdt obd name to get obd umount flags */
4405 /* XXX: this is needed because all layers are referenced by
4406 * objects (some of them are pinned by osd, for example *
4407 * the proper solution should be a model where object used
4408 * by osd only doesn't have mdt/mdd slices -bzzz */
4409 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
4410 lustre_cfg_bufs_set_string(bufs, 1, NULL);
4411 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4414 lustre_cfg_init(lcfg, LCFG_PRE_CLEANUP, bufs);
4416 top->ld_ops->ldo_process_config(env, top, lcfg);
4417 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4421 static void mdt_stack_fini(const struct lu_env *env,
4422 struct mdt_device *m, struct lu_device *top)
4424 struct obd_device *obd = mdt2obd_dev(m);
4425 struct lustre_cfg_bufs *bufs;
4426 struct lustre_cfg *lcfg;
4427 struct mdt_thread_info *info;
4431 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4432 LASSERT(info != NULL);
4434 lu_dev_del_linkage(top->ld_site, top);
4436 lu_site_purge(env, top->ld_site, -1);
4438 bufs = &info->mti_u.bufs;
4439 /* process cleanup, pass mdt obd name to get obd umount flags */
4440 /* another purpose is to let all layers to release their objects */
4441 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
4446 lustre_cfg_bufs_set_string(bufs, 1, flags);
4447 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4450 lustre_cfg_init(lcfg, LCFG_CLEANUP, bufs);
4453 top->ld_ops->ldo_process_config(env, top, lcfg);
4454 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4456 lu_site_purge(env, top->ld_site, -1);
4458 m->mdt_child = NULL;
4459 m->mdt_bottom = NULL;
4461 obd_disconnect(m->mdt_child_exp);
4462 m->mdt_child_exp = NULL;
4464 obd_disconnect(m->mdt_bottom_exp);
4465 m->mdt_child_exp = NULL;
4468 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
4469 const char *next, struct obd_export **exp)
4471 struct obd_connect_data *data = NULL;
4472 struct obd_device *obd;
4476 OBD_ALLOC_PTR(data);
4478 GOTO(out, rc = -ENOMEM);
4480 obd = class_name2obd(next);
4482 CERROR("%s: can't locate next device: %s\n",
4483 mdt_obd_name(m), next);
4484 GOTO(out, rc = -ENOTCONN);
4487 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4488 data->ocd_version = LUSTRE_VERSION_CODE;
4490 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
4492 CERROR("%s: cannot connect to next dev %s (%d)\n",
4493 mdt_obd_name(m), next, rc);
4503 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
4504 struct lustre_cfg *cfg)
4506 char *dev = lustre_cfg_string(cfg, 0);
4507 int rc, name_size, uuid_size;
4508 char *name, *uuid, *p;
4509 struct lustre_cfg_bufs *bufs;
4510 struct lustre_cfg *lcfg;
4511 struct obd_device *obd;
4512 struct lustre_profile *lprof;
4513 struct lu_site *site;
4516 /* in 1.8 we had the only device in the stack - MDS.
4517 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
4518 * in 2.3 OSD is instantiated by obd_mount.c, so we need
4519 * to generate names and setup MDT, MDD. MDT will be using
4520 * generated name to connect to MDD. for MDD the next device
4521 * will be LOD with name taken from so called "profile" which
4522 * is generated by mount_option line
4524 * 1.8 MGS generates config. commands like this:
4525 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
4526 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
4527 * 2.0 MGS generates config. commands like this:
4528 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
4529 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4530 * 3:lustre-MDT0000-mdtlov 4:f
4532 * we generate MDD name from MDT one, just replacing T with D
4534 * after all the preparations, the logical equivalent will be
4535 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
4536 * 3:lustre-MDT0000-mdtlov 4:f
4537 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4538 * 3:lustre-MDD0000 4:f
4540 * notice we build the stack from down to top: MDD first, then MDT */
4542 name_size = MAX_OBD_NAME;
4543 uuid_size = MAX_OBD_NAME;
4545 OBD_ALLOC(name, name_size);
4546 OBD_ALLOC(uuid, uuid_size);
4547 if (name == NULL || uuid == NULL)
4548 GOTO(cleanup_mem, rc = -ENOMEM);
4550 OBD_ALLOC_PTR(bufs);
4552 GOTO(cleanup_mem, rc = -ENOMEM);
4555 p = strstr(name, "-MDT");
4557 GOTO(free_bufs, rc = -ENOMEM);
4560 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
4562 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4563 if (lprof == NULL || lprof->lp_dt == NULL) {
4564 CERROR("can't find the profile: %s\n",
4565 lustre_cfg_string(cfg, 0));
4566 GOTO(free_bufs, rc = -EINVAL);
4569 lustre_cfg_bufs_reset(bufs, name);
4570 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
4571 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4572 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4574 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4576 GOTO(put_profile, rc = -ENOMEM);
4577 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
4579 rc = class_attach(lcfg);
4581 GOTO(lcfg_cleanup, rc);
4583 obd = class_name2obd(name);
4585 CERROR("Can not find obd %s (%s in config)\n",
4586 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
4587 GOTO(lcfg_cleanup, rc = -EINVAL);
4590 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4592 lustre_cfg_bufs_reset(bufs, name);
4593 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4594 lustre_cfg_bufs_set_string(bufs, 2, dev);
4595 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4597 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4599 GOTO(class_detach, rc = -ENOMEM);
4600 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
4602 rc = class_setup(obd, lcfg);
4604 GOTO(class_detach, rc);
4606 /* connect to MDD we just setup */
4607 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
4609 GOTO(class_detach, rc);
4611 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
4613 LASSERT(mdt_lu_site(mdt) == NULL);
4614 mdt->mdt_lu_dev.ld_site = site;
4615 site->ls_top_dev = &mdt->mdt_lu_dev;
4616 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
4618 /* now connect to bottom OSD */
4619 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
4620 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
4622 GOTO(class_detach, rc);
4624 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
4626 rc = lu_env_refill((struct lu_env *)env);
4628 CERROR("Failure to refill session: '%d'\n", rc);
4630 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
4635 class_detach(obd, lcfg);
4637 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4639 class_put_profile(lprof);
4644 OBD_FREE(name, name_size);
4646 OBD_FREE(uuid, uuid_size);
4650 /* setup quota master target on MDT0 */
4651 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
4652 struct lustre_cfg *cfg)
4654 struct obd_device *obd;
4655 char *dev = lustre_cfg_string(cfg, 0);
4656 char *qmtname, *uuid, *p;
4657 struct lustre_cfg_bufs *bufs;
4658 struct lustre_cfg *lcfg;
4659 struct lustre_profile *lprof;
4660 struct obd_connect_data *data;
4664 LASSERT(mdt->mdt_qmt_exp == NULL);
4665 LASSERT(mdt->mdt_qmt_dev == NULL);
4667 /* quota master is on MDT0 only for now */
4668 if (mdt->mdt_seq_site.ss_node_id != 0)
4671 /* MGS generates config commands which look as follows:
4672 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4673 * 3:lustre-MDT0000-mdtlov 4:f
4675 * We generate the QMT name from the MDT one, just replacing MD with QM
4676 * after all the preparations, the logical equivalent will be:
4677 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
4678 * 3:lustre-MDT0000-osd 4:f */
4679 OBD_ALLOC(qmtname, MAX_OBD_NAME);
4680 OBD_ALLOC(uuid, UUID_MAX);
4681 OBD_ALLOC_PTR(bufs);
4682 OBD_ALLOC_PTR(data);
4683 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
4684 GOTO(cleanup_mem, rc = -ENOMEM);
4686 strcpy(qmtname, dev);
4687 p = strstr(qmtname, "-MDT");
4689 GOTO(cleanup_mem, rc = -ENOMEM);
4690 /* replace MD with QM */
4694 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
4696 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4697 if (lprof == NULL || lprof->lp_dt == NULL) {
4698 CERROR("can't find profile for %s\n",
4699 lustre_cfg_string(cfg, 0));
4700 GOTO(cleanup_mem, rc = -EINVAL);
4703 lustre_cfg_bufs_reset(bufs, qmtname);
4704 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
4705 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4706 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4708 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4710 GOTO(put_profile, rc = -ENOMEM);
4711 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
4713 rc = class_attach(lcfg);
4715 GOTO(lcfg_cleanup, rc);
4717 obd = class_name2obd(qmtname);
4719 CERROR("Can not find obd %s (%s in config)\n", qmtname,
4720 lustre_cfg_string(cfg, 0));
4721 GOTO(lcfg_cleanup, rc = -EINVAL);
4724 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4726 lustre_cfg_bufs_reset(bufs, qmtname);
4727 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4728 lustre_cfg_bufs_set_string(bufs, 2, dev);
4730 /* for quota, the next device should be the OSD device */
4731 lustre_cfg_bufs_set_string(bufs, 3,
4732 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
4734 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4736 GOTO(class_detach, rc = -ENOMEM);
4737 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
4739 rc = class_setup(obd, lcfg);
4741 GOTO(class_detach, rc);
4743 mdt->mdt_qmt_dev = obd->obd_lu_dev;
4745 /* configure local quota objects */
4746 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
4750 GOTO(class_cleanup, rc);
4752 /* connect to quota master target */
4753 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4754 data->ocd_version = LUSTRE_VERSION_CODE;
4755 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
4758 CERROR("cannot connect to quota master device %s (%d)\n",
4760 GOTO(class_cleanup, rc);
4766 class_manual_cleanup(obd);
4767 mdt->mdt_qmt_dev = NULL;
4771 class_detach(obd, lcfg);
4773 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4775 class_put_profile(lprof);
4780 OBD_FREE(qmtname, MAX_OBD_NAME);
4782 OBD_FREE(uuid, UUID_MAX);
4788 /* Shutdown quota master target associated with mdt */
4789 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
4793 if (mdt->mdt_qmt_exp == NULL)
4795 LASSERT(mdt->mdt_qmt_dev != NULL);
4797 /* the qmt automatically shuts down when the mdt disconnects */
4798 obd_disconnect(mdt->mdt_qmt_exp);
4799 mdt->mdt_qmt_exp = NULL;
4800 mdt->mdt_qmt_dev = NULL;
4804 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
4805 * for now. This will be removed along with converting rest of MDT code
4806 * to use tgt_session_info */
4807 static int mdt_tgt_getxattr(struct tgt_session_info *tsi)
4809 struct mdt_thread_info *info = tsi2mdt_info(tsi);
4812 rc = mdt_getxattr(info);
4814 mdt_thread_info_fini(info);
4818 #define OBD_FAIL_OST_READ_NET OBD_FAIL_OST_BRW_NET
4819 #define OBD_FAIL_OST_WRITE_NET OBD_FAIL_OST_BRW_NET
4820 #define OST_BRW_READ OST_READ
4821 #define OST_BRW_WRITE OST_WRITE
4823 static struct tgt_handler mdt_tgt_handlers[] = {
4824 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4825 0, MDS_CONNECT, mdt_tgt_connect,
4826 &RQF_CONNECT, LUSTRE_OBD_VERSION),
4827 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4828 0, MDS_DISCONNECT, tgt_disconnect,
4829 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
4830 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4831 HABEO_REFERO, MDS_SET_INFO, mdt_set_info,
4832 &RQF_OBD_SET_INFO, LUSTRE_MDS_VERSION),
4833 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
4834 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_GET_ROOT, mdt_get_root),
4835 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETATTR, mdt_getattr),
4836 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_GETATTR_NAME,
4838 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETXATTR, mdt_tgt_getxattr),
4839 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_STATFS, mdt_statfs),
4840 TGT_MDT_HDL(0 | MUTABOR, MDS_REINT, mdt_reint),
4841 TGT_MDT_HDL(HABEO_CORPUS, MDS_CLOSE, mdt_close),
4842 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_READPAGE, mdt_readpage),
4843 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_SYNC, mdt_sync),
4844 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
4845 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_PROGRESS,
4847 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_REGISTER,
4848 mdt_hsm_ct_register),
4849 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_UNREGISTER,
4850 mdt_hsm_ct_unregister),
4851 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_STATE_GET,
4853 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_STATE_SET,
4855 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_ACTION, mdt_hsm_action),
4856 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_REQUEST,
4858 TGT_MDT_HDL(HABEO_CLAVIS | HABEO_CORPUS | HABEO_REFERO | MUTABOR,
4863 static struct tgt_handler mdt_io_ops[] = {
4864 TGT_OST_HDL(HABEO_CORPUS | HABEO_REFERO, OST_BRW_READ, tgt_brw_read),
4865 TGT_OST_HDL(HABEO_CORPUS | MUTABOR, OST_BRW_WRITE, tgt_brw_write),
4866 TGT_OST_HDL(HABEO_CORPUS | HABEO_REFERO | MUTABOR,
4867 OST_PUNCH, mdt_punch_hdl),
4868 TGT_OST_HDL(HABEO_CORPUS | HABEO_REFERO, OST_SYNC, mdt_data_sync),
4871 static struct tgt_handler mdt_sec_ctx_ops[] = {
4872 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
4873 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
4874 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
4877 static struct tgt_handler mdt_quota_ops[] = {
4878 TGT_QUOTA_HDL(HABEO_REFERO, QUOTA_DQACQ, mdt_quota_dqacq),
4881 static struct tgt_opc_slice mdt_common_slice[] = {
4883 .tos_opc_start = MDS_FIRST_OPC,
4884 .tos_opc_end = MDS_LAST_OPC,
4885 .tos_hs = mdt_tgt_handlers
4888 .tos_opc_start = OBD_FIRST_OPC,
4889 .tos_opc_end = OBD_LAST_OPC,
4890 .tos_hs = tgt_obd_handlers
4893 .tos_opc_start = LDLM_FIRST_OPC,
4894 .tos_opc_end = LDLM_LAST_OPC,
4895 .tos_hs = tgt_dlm_handlers
4898 .tos_opc_start = SEC_FIRST_OPC,
4899 .tos_opc_end = SEC_LAST_OPC,
4900 .tos_hs = mdt_sec_ctx_ops
4903 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
4904 .tos_opc_end = OUT_UPDATE_LAST_OPC,
4905 .tos_hs = tgt_out_handlers
4908 .tos_opc_start = FLD_FIRST_OPC,
4909 .tos_opc_end = FLD_LAST_OPC,
4910 .tos_hs = fld_handlers
4913 .tos_opc_start = SEQ_FIRST_OPC,
4914 .tos_opc_end = SEQ_LAST_OPC,
4915 .tos_hs = seq_handlers
4918 .tos_opc_start = QUOTA_DQACQ,
4919 .tos_opc_end = QUOTA_LAST_OPC,
4920 .tos_hs = mdt_quota_ops
4923 .tos_opc_start = LLOG_FIRST_OPC,
4924 .tos_opc_end = LLOG_LAST_OPC,
4925 .tos_hs = tgt_llog_handlers
4928 .tos_opc_start = LFSCK_FIRST_OPC,
4929 .tos_opc_end = LFSCK_LAST_OPC,
4930 .tos_hs = tgt_lfsck_handlers
4933 .tos_opc_start = OST_FIRST_OPC,
4934 .tos_opc_end = OST_LAST_OPC,
4935 .tos_hs = mdt_io_ops
4942 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4944 struct md_device *next = m->mdt_child;
4945 struct lu_device *d = &m->mdt_lu_dev;
4946 struct obd_device *obd = mdt2obd_dev(m);
4947 struct lfsck_stop stop;
4950 stop.ls_status = LS_PAUSED;
4952 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
4954 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
4955 ping_evictor_stop();
4957 /* Remove the HSM /proc entry so the coordinator cannot be
4958 * restarted by a user while it's shutting down. */
4959 hsm_cdt_procfs_fini(m);
4960 mdt_hsm_cdt_stop(m);
4962 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
4963 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4965 if (m->mdt_namespace != NULL)
4966 ldlm_namespace_free_prior(m->mdt_namespace, NULL,
4967 d->ld_obd->obd_force);
4969 obd_exports_barrier(obd);
4970 obd_zombie_barrier();
4972 mdt_quota_fini(env, m);
4974 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
4976 /* Calling the cleanup functions in the same order as in the mdt_init0
4981 target_recovery_fini(obd);
4982 upcall_cache_cleanup(m->mdt_identity_cache);
4983 m->mdt_identity_cache = NULL;
4985 mdt_fs_cleanup(env, m);
4987 tgt_fini(env, &m->mdt_lut);
4989 mdt_hsm_cdt_fini(m);
4991 if (m->mdt_namespace != NULL) {
4992 ldlm_namespace_free_post(m->mdt_namespace);
4993 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
4996 if (m->mdt_md_root != NULL) {
4997 mdt_object_put(env, m->mdt_md_root);
4998 m->mdt_md_root = NULL;
5001 mdt_seq_fini(env, m);
5003 mdt_fld_fini(env, m);
5008 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5010 LASSERT(atomic_read(&d->ld_ref) == 0);
5012 server_put_mount(mdt_obd_name(m), true);
5017 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
5019 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
5020 struct lu_device_type *ldt, struct lustre_cfg *cfg)
5022 const struct dt_device_param *dt_conf;
5023 struct mdt_thread_info *info;
5024 struct obd_device *obd;
5025 const char *dev = lustre_cfg_string(cfg, 0);
5026 const char *num = lustre_cfg_string(cfg, 2);
5027 struct tg_grants_data *tgd = &m->mdt_lut.lut_tgd;
5028 struct lustre_mount_info *lmi = NULL;
5029 struct lustre_sb_info *lsi;
5031 struct seq_server_site *ss_site;
5032 const char *identity_upcall = "NONE";
5033 struct md_device *next;
5039 lu_device_init(&m->mdt_lu_dev, ldt);
5041 * Environment (env) might be missing mdt_thread_key values at that
5042 * point, if device is allocated when mdt_thread_key is in QUIESCENT
5045 * Usually device allocation path doesn't use module key values, but
5046 * mdt has to do a lot of work here, so allocate key value.
5048 rc = lu_env_refill((struct lu_env *)env);
5052 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5053 LASSERT(info != NULL);
5055 obd = class_name2obd(dev);
5056 LASSERT(obd != NULL);
5058 m->mdt_max_mdsize = MAX_MD_SIZE; /* 4 stripes */
5059 m->mdt_opts.mo_evict_tgt_nids = 1;
5060 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
5062 lmi = server_get_mount(dev);
5064 CERROR("Cannot get mount info for %s!\n", dev);
5067 lsi = s2lsi(lmi->lmi_sb);
5068 /* CMD is supported only in IAM mode */
5070 node_id = simple_strtol(num, NULL, 10);
5071 obd->u.obt.obt_magic = OBT_MAGIC;
5072 if (lsi->lsi_lmd != NULL &&
5073 lsi->lsi_lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
5074 m->mdt_skip_lfsck = 1;
5077 /* DoM files get IO lock at open by default */
5078 m->mdt_opts.mo_dom_lock = 1;
5080 m->mdt_squash.rsi_uid = 0;
5081 m->mdt_squash.rsi_gid = 0;
5082 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
5083 init_rwsem(&m->mdt_squash.rsi_sem);
5084 spin_lock_init(&m->mdt_lock);
5085 m->mdt_enable_remote_dir = 0;
5086 m->mdt_enable_remote_dir_gid = 0;
5088 atomic_set(&m->mdt_mds_mds_conns, 0);
5089 atomic_set(&m->mdt_async_commit_count, 0);
5091 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
5092 m->mdt_lu_dev.ld_obd = obd;
5093 /* Set this lu_device to obd for error handling purposes. */
5094 obd->obd_lu_dev = &m->mdt_lu_dev;
5096 /* init the stack */
5097 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
5099 CERROR("%s: Can't init device stack, rc %d\n",
5100 mdt_obd_name(m), rc);
5105 ss_site = mdt_seq_site(m);
5106 s->ld_seq_site = ss_site;
5109 /* set server index */
5110 ss_site->ss_node_id = node_id;
5112 /* failover is the default
5113 * FIXME: we do not failout mds0/mgs, which may cause some problems.
5114 * assumed whose ss_node_id == 0 XXX
5116 obd->obd_replayable = 1;
5117 /* No connection accepted until configurations will finish */
5118 obd->obd_no_conn = 1;
5120 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
5121 char *str = lustre_cfg_string(cfg, 4);
5122 if (strchr(str, 'n')) {
5123 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
5124 obd->obd_replayable = 0;
5128 rc = mdt_fld_init(env, mdt_obd_name(m), m);
5130 GOTO(err_fini_stack, rc);
5132 rc = mdt_seq_init(env, m);
5134 GOTO(err_fini_fld, rc);
5136 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
5137 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
5138 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
5139 LDLM_NAMESPACE_SERVER,
5140 LDLM_NAMESPACE_GREEDY,
5142 if (m->mdt_namespace == NULL)
5143 GOTO(err_fini_seq, rc = -ENOMEM);
5145 m->mdt_namespace->ns_lvbp = m;
5146 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
5148 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
5149 /* set obd_namespace for compatibility with old code */
5150 obd->obd_namespace = m->mdt_namespace;
5152 rc = mdt_hsm_cdt_init(m);
5154 CERROR("%s: error initializing coordinator, rc %d\n",
5155 mdt_obd_name(m), rc);
5156 GOTO(err_free_ns, rc);
5159 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
5160 OBD_FAIL_MDS_ALL_REQUEST_NET,
5161 OBD_FAIL_MDS_ALL_REPLY_NET);
5163 GOTO(err_free_hsm, rc);
5165 /* Amount of available space excluded from granting and reserved
5166 * for metadata. It is in percentage and 50% is default value. */
5167 tgd->tgd_reserved_pcnt = 50;
5169 if (ONE_MB_BRW_SIZE < (1U << tgd->tgd_blockbits))
5170 m->mdt_brw_size = 1U << tgd->tgd_blockbits;
5172 m->mdt_brw_size = ONE_MB_BRW_SIZE;
5174 rc = mdt_fs_setup(env, m, obd, lsi);
5178 tgt_adapt_sptlrpc_conf(&m->mdt_lut);
5180 next = m->mdt_child;
5181 dt_conf = next->md_ops->mdo_dtconf_get(env, next);
5183 mntopts = dt_conf->ddp_mntopts;
5185 if (mntopts & MNTOPT_USERXATTR)
5186 m->mdt_opts.mo_user_xattr = 1;
5188 m->mdt_opts.mo_user_xattr = 0;
5190 m->mdt_max_ea_size = dt_conf->ddp_max_ea_size;
5192 if (mntopts & MNTOPT_ACL)
5193 m->mdt_opts.mo_acl = 1;
5195 m->mdt_opts.mo_acl = 0;
5197 /* XXX: to support suppgid for ACL, we enable identity_upcall
5198 * by default, otherwise, maybe got unexpected -EACCESS. */
5199 if (m->mdt_opts.mo_acl)
5200 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
5202 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
5204 &mdt_identity_upcall_cache_ops);
5205 if (IS_ERR(m->mdt_identity_cache)) {
5206 rc = PTR_ERR(m->mdt_identity_cache);
5207 m->mdt_identity_cache = NULL;
5208 GOTO(err_fs_cleanup, rc);
5211 rc = mdt_procfs_init(m, dev);
5213 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
5214 GOTO(err_recovery, rc);
5217 rc = mdt_quota_init(env, m, cfg);
5219 GOTO(err_procfs, rc);
5221 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
5222 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
5223 "mdt_ldlm_client", m->mdt_ldlm_client);
5225 ping_evictor_start();
5227 /* recovery will be started upon mdt_prepare()
5228 * when the whole stack is complete and ready
5229 * to serve the requests */
5231 /* Reduce the initial timeout on an MDS because it doesn't need such
5232 * a long timeout as an OST does. Adaptive timeouts will adjust this
5233 * value appropriately. */
5234 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
5235 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
5241 target_recovery_fini(obd);
5242 upcall_cache_cleanup(m->mdt_identity_cache);
5243 m->mdt_identity_cache = NULL;
5245 mdt_fs_cleanup(env, m);
5247 tgt_fini(env, &m->mdt_lut);
5249 mdt_hsm_cdt_fini(m);
5251 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
5252 obd->obd_namespace = m->mdt_namespace = NULL;
5254 mdt_seq_fini(env, m);
5256 mdt_fld_fini(env, m);
5258 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5261 server_put_mount(dev, true);
5265 /* For interoperability, the left element is old parameter, the right one
5266 * is the new version of the parameter, if some parameter is deprecated,
5267 * the new version should be set as NULL. */
5268 static struct cfg_interop_param mdt_interop_param[] = {
5269 { "mdt.group_upcall", NULL },
5270 { "mdt.quota_type", NULL },
5271 { "mdd.quota_type", NULL },
5272 { "mdt.som", NULL },
5273 { "mdt.rootsquash", "mdt.root_squash" },
5274 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
5278 /* used by MGS to process specific configurations */
5279 static int mdt_process_config(const struct lu_env *env,
5280 struct lu_device *d, struct lustre_cfg *cfg)
5282 struct mdt_device *m = mdt_dev(d);
5283 struct md_device *md_next = m->mdt_child;
5284 struct lu_device *next = md2lu_dev(md_next);
5288 switch (cfg->lcfg_command) {
5290 struct obd_device *obd = d->ld_obd;
5292 /* For interoperability */
5293 struct cfg_interop_param *ptr = NULL;
5294 struct lustre_cfg *old_cfg = NULL;
5297 param = lustre_cfg_string(cfg, 1);
5298 if (param == NULL) {
5299 CERROR("param is empty\n");
5304 ptr = class_find_old_param(param, mdt_interop_param);
5306 if (ptr->new_param == NULL) {
5308 CWARN("For interoperability, skip this %s."
5309 " It is obsolete.\n", ptr->old_param);
5313 CWARN("Found old param %s, changed it to %s.\n",
5314 ptr->old_param, ptr->new_param);
5317 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
5324 rc = class_process_proc_param(PARAM_MDT, obd->obd_vars,
5326 if (rc > 0 || rc == -ENOSYS) {
5327 /* is it an HSM var ? */
5328 rc = class_process_proc_param(PARAM_HSM,
5329 hsm_cdt_get_proc_vars(),
5331 if (rc > 0 || rc == -ENOSYS)
5332 /* we don't understand; pass it on */
5333 rc = next->ld_ops->ldo_process_config(env, next,
5338 OBD_FREE(cfg, lustre_cfg_len(cfg->lcfg_bufcount,
5339 cfg->lcfg_buflens));
5343 /* others are passed further */
5344 rc = next->ld_ops->ldo_process_config(env, next, cfg);
5350 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
5351 const struct lu_object_header *hdr,
5352 struct lu_device *d)
5354 struct mdt_object *mo;
5358 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
5360 struct lu_object *o;
5361 struct lu_object_header *h;
5364 h = &mo->mot_header;
5365 lu_object_header_init(h);
5366 lu_object_init(o, h, d);
5367 lu_object_add_top(h, o);
5368 o->lo_ops = &mdt_obj_ops;
5369 spin_lock_init(&mo->mot_write_lock);
5370 mutex_init(&mo->mot_lov_mutex);
5371 init_rwsem(&mo->mot_dom_sem);
5372 init_rwsem(&mo->mot_open_sem);
5373 atomic_set(&mo->mot_open_count, 0);
5379 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
5380 const struct lu_object_conf *unused)
5382 struct mdt_device *d = mdt_dev(o->lo_dev);
5383 struct lu_device *under;
5384 struct lu_object *below;
5388 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
5389 PFID(lu_object_fid(o)));
5391 under = &d->mdt_child->md_lu_dev;
5392 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
5393 if (below != NULL) {
5394 lu_object_add(o, below);
5401 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
5403 struct mdt_object *mo = mdt_obj(o);
5404 struct lu_object_header *h;
5408 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
5409 PFID(lu_object_fid(o)));
5411 LASSERT(atomic_read(&mo->mot_open_count) == 0);
5412 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
5415 lu_object_header_fini(h);
5416 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
5421 static int mdt_object_print(const struct lu_env *env, void *cookie,
5422 lu_printer_t p, const struct lu_object *o)
5424 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
5426 return (*p)(env, cookie,
5427 LUSTRE_MDT_NAME"-object@%p(%s %s, writecount=%d)",
5428 mdto, mdto->mot_lov_created ? "lov_created" : "",
5429 mdto->mot_cache_attr ? "cache_attr" : "",
5430 mdto->mot_write_count);
5433 static int mdt_prepare(const struct lu_env *env,
5434 struct lu_device *pdev,
5435 struct lu_device *cdev)
5437 struct mdt_device *mdt = mdt_dev(cdev);
5438 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
5439 struct obd_device *obd = cdev->ld_obd;
5446 rc = next->ld_ops->ldo_prepare(env, cdev, next);
5450 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
5454 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
5458 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
5459 /* The LFSCK instance is registered just now, so it must be there when
5460 * register the namespace to such instance. */
5461 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
5463 if (mdt->mdt_seq_site.ss_node_id == 0) {
5464 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
5465 &mdt->mdt_md_root_fid);
5470 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
5472 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
5473 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
5474 LASSERT(obd->obd_no_conn);
5475 spin_lock(&obd->obd_dev_lock);
5476 obd->obd_no_conn = 0;
5477 spin_unlock(&obd->obd_dev_lock);
5479 if (obd->obd_recovering == 0)
5480 mdt_postrecov(env, mdt);
5485 const struct lu_device_operations mdt_lu_ops = {
5486 .ldo_object_alloc = mdt_object_alloc,
5487 .ldo_process_config = mdt_process_config,
5488 .ldo_prepare = mdt_prepare,
5491 static const struct lu_object_operations mdt_obj_ops = {
5492 .loo_object_init = mdt_object_init,
5493 .loo_object_free = mdt_object_free,
5494 .loo_object_print = mdt_object_print
5497 static int mdt_obd_set_info_async(const struct lu_env *env,
5498 struct obd_export *exp,
5499 __u32 keylen, void *key,
5500 __u32 vallen, void *val,
5501 struct ptlrpc_request_set *set)
5507 if (KEY_IS(KEY_SPTLRPC_CONF)) {
5508 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp));
5516 * Match client and server connection feature flags.
5518 * Compute the compatibility flags for a connection request based on
5519 * features mutually supported by client and server.
5521 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
5522 * must not be updated here, otherwise a partially initialized value may
5523 * be exposed. After the connection request is successfully processed,
5524 * the top-level MDT connect request handler atomically updates the export
5525 * connect flags from the obd_connect_data::ocd_connect_flags field of the
5526 * reply. \see mdt_connect().
5528 * Before 2.7.50 clients will send a struct obd_connect_data_v1 rather than a
5529 * full struct obd_connect_data. So care must be taken when accessing fields
5530 * that are not present in struct obd_connect_data_v1. See LU-16.
5532 * \param exp the obd_export associated with this client/target pair
5533 * \param mdt the target device for the connection
5534 * \param data stores data for this connect request
5537 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
5538 * \retval -EBADE client and server feature requirements are incompatible
5540 static int mdt_connect_internal(const struct lu_env *env,
5541 struct obd_export *exp,
5542 struct mdt_device *mdt,
5543 struct obd_connect_data *data, bool reconnect)
5545 LASSERT(data != NULL);
5547 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
5549 if (mdt->mdt_bottom->dd_rdonly &&
5550 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
5551 !(data->ocd_connect_flags & OBD_CONNECT_RDONLY))
5554 if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
5555 data->ocd_connect_flags2 &= MDT_CONNECT_SUPPORTED2;
5557 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
5559 if (!(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
5560 !(data->ocd_connect_flags & OBD_CONNECT_IBITS)) {
5561 CWARN("%s: client %s does not support ibits lock, either "
5562 "very old or an invalid client: flags %#llx\n",
5563 mdt_obd_name(mdt), exp->exp_client_uuid.uuid,
5564 data->ocd_connect_flags);
5568 if (!mdt->mdt_opts.mo_acl)
5569 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
5571 if (!mdt->mdt_opts.mo_user_xattr)
5572 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
5574 if (OCD_HAS_FLAG(data, BRW_SIZE)) {
5575 data->ocd_brw_size = min(data->ocd_brw_size,
5577 if (data->ocd_brw_size == 0) {
5578 CERROR("%s: cli %s/%p ocd_connect_flags: %#llx "
5579 "ocd_version: %x ocd_grant: %d ocd_index: %u "
5580 "ocd_brw_size unexpectedly zero, network data "
5581 "corruption? Refusing to connect this client\n",
5583 exp->exp_client_uuid.uuid,
5584 exp, data->ocd_connect_flags, data->ocd_version,
5585 data->ocd_grant, data->ocd_index);
5590 if (OCD_HAS_FLAG(data, GRANT_PARAM)) {
5591 struct dt_device_param *ddp = &mdt->mdt_lut.lut_dt_conf;
5593 /* client is reporting its page size, for future use */
5594 exp->exp_target_data.ted_pagebits = data->ocd_grant_blkbits;
5595 data->ocd_grant_blkbits = mdt->mdt_lut.lut_tgd.tgd_blockbits;
5596 /* ddp_inodespace may not be power-of-two value, eg. for ldiskfs
5597 * it's LDISKFS_DIR_REC_LEN(20) = 28. */
5598 data->ocd_grant_inobits = fls(ddp->ddp_inodespace - 1);
5599 /* ocd_grant_tax_kb is in 1K byte blocks */
5600 data->ocd_grant_tax_kb = ddp->ddp_extent_tax >> 10;
5601 data->ocd_grant_max_blks = ddp->ddp_max_extent_blks;
5604 if (OCD_HAS_FLAG(data, GRANT)) {
5605 /* Save connect_data we have so far because tgt_grant_connect()
5606 * uses it to calculate grant. */
5607 exp->exp_connect_data = *data;
5608 tgt_grant_connect(env, exp, data, !reconnect);
5611 if (OCD_HAS_FLAG(data, MAXBYTES))
5612 data->ocd_maxbytes = mdt->mdt_lut.lut_dt_conf.ddp_maxbytes;
5614 /* NB: Disregard the rule against updating
5615 * exp_connect_data.ocd_connect_flags in this case, since
5616 * tgt_client_new() needs to know if this is a lightweight
5617 * connection, and it is safe to expose this flag before
5618 * connection processing completes. */
5619 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
5620 spin_lock(&exp->exp_lock);
5621 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
5622 spin_unlock(&exp->exp_lock);
5625 data->ocd_version = LUSTRE_VERSION_CODE;
5627 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
5628 CWARN("%s: MDS requires FID support, but client not\n",
5633 if (OCD_HAS_FLAG(data, PINGLESS)) {
5634 if (ptlrpc_pinger_suppress_pings()) {
5635 spin_lock(&exp->exp_obd->obd_dev_lock);
5636 list_del_init(&exp->exp_obd_chain_timed);
5637 spin_unlock(&exp->exp_obd->obd_dev_lock);
5639 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
5643 data->ocd_max_easize = mdt->mdt_max_ea_size;
5645 /* NB: Disregard the rule against updating
5646 * exp_connect_data.ocd_connect_flags in this case, since
5647 * tgt_client_new() needs to know if this is client supports
5648 * multiple modify RPCs, and it is safe to expose this flag before
5649 * connection processing completes. */
5650 if (data->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS) {
5651 data->ocd_maxmodrpcs = max_mod_rpcs_per_client;
5652 spin_lock(&exp->exp_lock);
5653 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_MULTIMODRPCS;
5654 spin_unlock(&exp->exp_lock);
5657 if (OCD_HAS_FLAG(data, CKSUM)) {
5658 __u32 cksum_types = data->ocd_cksum_types;
5660 /* The client set in ocd_cksum_types the checksum types it
5661 * supports. We have to mask off the algorithms that we don't
5663 data->ocd_cksum_types &= cksum_types_supported_server();
5665 if (unlikely(data->ocd_cksum_types == 0)) {
5666 CERROR("%s: Connect with checksum support but no "
5667 "ocd_cksum_types is set\n",
5668 exp->exp_obd->obd_name);
5672 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
5673 "%x\n", exp->exp_obd->obd_name, obd_export_nid2str(exp),
5674 cksum_types, data->ocd_cksum_types);
5676 /* This client does not support OBD_CONNECT_CKSUM
5677 * fall back to CRC32 */
5678 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
5679 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
5680 exp->exp_obd->obd_name, obd_export_nid2str(exp));
5686 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
5687 struct mdt_thread_info *info,
5688 struct mdt_file_data *mfd)
5690 struct lu_context ses;
5694 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
5699 lu_context_enter(&ses);
5701 mdt_ucred(info)->uc_valid = UCRED_OLD;
5702 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
5704 lu_context_exit(&ses);
5705 lu_context_fini(&ses);
5711 static int mdt_export_cleanup(struct obd_export *exp)
5713 struct list_head closing_list;
5714 struct mdt_export_data *med = &exp->exp_mdt_data;
5715 struct obd_device *obd = exp->exp_obd;
5716 struct mdt_device *mdt;
5717 struct mdt_thread_info *info;
5719 struct mdt_file_data *mfd, *n;
5723 INIT_LIST_HEAD(&closing_list);
5724 spin_lock(&med->med_open_lock);
5725 while (!list_empty(&med->med_open_head)) {
5726 struct list_head *tmp = med->med_open_head.next;
5727 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
5729 /* Remove mfd handle so it can't be found again.
5730 * We are consuming the mfd_list reference here. */
5731 class_handle_unhash(&mfd->mfd_handle);
5732 list_move_tail(&mfd->mfd_list, &closing_list);
5734 spin_unlock(&med->med_open_lock);
5735 mdt = mdt_dev(obd->obd_lu_dev);
5736 LASSERT(mdt != NULL);
5738 rc = lu_env_init(&env, LCT_MD_THREAD);
5742 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5743 LASSERT(info != NULL);
5744 memset(info, 0, sizeof *info);
5745 info->mti_env = &env;
5746 info->mti_mdt = mdt;
5747 info->mti_exp = exp;
5749 if (!list_empty(&closing_list)) {
5750 struct md_attr *ma = &info->mti_attr;
5752 /* Close any open files (which may also cause orphan
5754 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
5755 list_del_init(&mfd->mfd_list);
5756 ma->ma_need = ma->ma_valid = 0;
5758 /* This file is being closed due to an eviction, it
5759 * could have been modified and now dirty regarding to
5760 * HSM archive, check this!
5761 * The logic here is to mark a file dirty if there's a
5762 * chance it was dirtied before the client was evicted,
5763 * so that we don't have to wait for a release attempt
5764 * before finding out the file was actually dirty and
5765 * fail the release. Aggressively marking it dirty here
5766 * will cause the policy engine to attempt to
5767 * re-archive it; when rearchiving, we can compare the
5768 * current version to the HSM data_version and make the
5769 * archive request into a noop if it's not actually
5772 if (mfd->mfd_mode & FMODE_WRITE)
5773 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
5775 /* Don't unlink orphan on failover umount, LU-184 */
5776 if (exp->exp_flags & OBD_OPT_FAILOVER) {
5777 ma->ma_valid = MA_FLAGS;
5778 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
5780 mdt_mfd_close(info, mfd);
5783 info->mti_mdt = NULL;
5784 /* cleanup client slot early */
5785 /* Do not erase record for recoverable client. */
5786 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
5787 tgt_client_del(&env, exp);
5793 static inline void mdt_enable_slc(struct mdt_device *mdt)
5795 if (mdt->mdt_lut.lut_sync_lock_cancel == NEVER_SYNC_ON_CANCEL)
5796 mdt->mdt_lut.lut_sync_lock_cancel = BLOCKING_SYNC_ON_CANCEL;
5799 static inline void mdt_disable_slc(struct mdt_device *mdt)
5801 if (mdt->mdt_lut.lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL)
5802 mdt->mdt_lut.lut_sync_lock_cancel = NEVER_SYNC_ON_CANCEL;
5805 static int mdt_obd_disconnect(struct obd_export *exp)
5812 class_export_get(exp);
5814 if (!(exp->exp_flags & OBD_OPT_FORCE))
5815 tgt_grant_sanity_check(exp->exp_obd, __func__);
5817 if ((exp_connect_flags(exp) & OBD_CONNECT_MDS_MDS) &&
5818 !(exp_connect_flags(exp) & OBD_CONNECT_LIGHTWEIGHT)) {
5819 struct mdt_device *mdt = mdt_dev(exp->exp_obd->obd_lu_dev);
5821 if (atomic_dec_and_test(&mdt->mdt_mds_mds_conns))
5822 mdt_disable_slc(mdt);
5825 rc = server_disconnect_export(exp);
5827 CDEBUG(D_IOCTL, "server disconnect error: rc = %d\n", rc);
5829 tgt_grant_discard(exp);
5831 rc = mdt_export_cleanup(exp);
5832 nodemap_del_member(exp);
5833 class_export_put(exp);
5837 /* mds_connect copy */
5838 static int mdt_obd_connect(const struct lu_env *env,
5839 struct obd_export **exp, struct obd_device *obd,
5840 struct obd_uuid *cluuid,
5841 struct obd_connect_data *data,
5844 struct obd_export *lexp;
5845 struct lustre_handle conn = { 0 };
5846 struct mdt_device *mdt;
5848 lnet_nid_t *client_nid = localdata;
5851 LASSERT(env != NULL);
5852 LASSERT(data != NULL);
5854 if (!exp || !obd || !cluuid)
5857 mdt = mdt_dev(obd->obd_lu_dev);
5859 if ((data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
5860 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
5861 atomic_inc(&mdt->mdt_mds_mds_conns);
5862 mdt_enable_slc(mdt);
5866 * first, check whether the stack is ready to handle requests
5867 * XXX: probably not very appropriate method is used now
5868 * at some point we should find a better one
5870 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) &&
5871 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) &&
5872 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
5873 rc = obd_get_info(env, mdt->mdt_child_exp,
5874 sizeof(KEY_OSP_CONNECTED),
5875 KEY_OSP_CONNECTED, NULL, NULL);
5878 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
5881 rc = class_connect(&conn, obd, cluuid);
5885 lexp = class_conn2export(&conn);
5886 LASSERT(lexp != NULL);
5888 rc = nodemap_add_member(*client_nid, lexp);
5889 if (rc != 0 && rc != -EEXIST)
5892 rc = mdt_connect_internal(env, lexp, mdt, data, false);
5894 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
5897 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5898 rc = tgt_client_new(env, lexp);
5900 mdt_export_stats_init(obd, lexp, localdata);
5904 class_disconnect(lexp);
5905 nodemap_del_member(lexp);
5909 /* Because we do not want this export to be evicted by pinger,
5910 * let's not add this export to the timed chain list. */
5911 if (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) {
5912 spin_lock(&lexp->exp_obd->obd_dev_lock);
5913 list_del_init(&lexp->exp_obd_chain_timed);
5914 spin_unlock(&lexp->exp_obd->obd_dev_lock);
5921 static int mdt_obd_reconnect(const struct lu_env *env,
5922 struct obd_export *exp, struct obd_device *obd,
5923 struct obd_uuid *cluuid,
5924 struct obd_connect_data *data,
5927 lnet_nid_t *client_nid = localdata;
5931 if (exp == NULL || obd == NULL || cluuid == NULL)
5934 rc = nodemap_add_member(*client_nid, exp);
5935 if (rc != 0 && rc != -EEXIST)
5938 rc = mdt_connect_internal(env, exp, mdt_dev(obd->obd_lu_dev), data,
5941 mdt_export_stats_init(obd, exp, localdata);
5943 nodemap_del_member(exp);
5948 /* FIXME: Can we avoid using these two interfaces? */
5949 static int mdt_init_export(struct obd_export *exp)
5951 struct mdt_export_data *med = &exp->exp_mdt_data;
5955 INIT_LIST_HEAD(&med->med_open_head);
5956 spin_lock_init(&med->med_open_lock);
5957 spin_lock(&exp->exp_lock);
5958 exp->exp_connecting = 1;
5959 spin_unlock(&exp->exp_lock);
5961 /* self-export doesn't need client data and ldlm initialization */
5962 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5963 &exp->exp_client_uuid)))
5966 rc = tgt_client_alloc(exp);
5970 rc = ldlm_init_export(exp);
5977 tgt_client_free(exp);
5979 CERROR("%s: Failed to initialize export: rc = %d\n",
5980 exp->exp_obd->obd_name, rc);
5984 static int mdt_destroy_export(struct obd_export *exp)
5988 target_destroy_export(exp);
5989 /* destroy can be called from failed obd_setup, so
5990 * checking uuid is safer than obd_self_export */
5991 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5992 &exp->exp_client_uuid)))
5995 ldlm_destroy_export(exp);
5996 tgt_client_free(exp);
5998 LASSERT(list_empty(&exp->exp_outstanding_replies));
5999 LASSERT(list_empty(&exp->exp_mdt_data.med_open_head));
6002 * discard grants once we're sure no more
6003 * interaction with the client is possible
6005 tgt_grant_discard(exp);
6006 if (exp_connect_flags(exp) & OBD_CONNECT_GRANT)
6007 exp->exp_obd->u.obt.obt_lut->lut_tgd.tgd_tot_granted_clients--;
6009 if (!(exp->exp_flags & OBD_OPT_FORCE))
6010 tgt_grant_sanity_check(exp->exp_obd, __func__);
6015 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
6016 struct linkea_data *ldata)
6020 LASSERT(ldata->ld_buf->lb_buf != NULL);
6022 if (!mdt_object_exists(mdt_obj))
6025 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6026 ldata->ld_buf, XATTR_NAME_LINK);
6027 if (rc == -ERANGE) {
6028 /* Buf was too small, figure out what we need. */
6029 lu_buf_free(ldata->ld_buf);
6030 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6031 ldata->ld_buf, XATTR_NAME_LINK);
6034 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
6035 if (ldata->ld_buf->lb_buf == NULL)
6037 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6038 ldata->ld_buf, XATTR_NAME_LINK);
6043 return linkea_init_with_rec(ldata);
6047 * Given an MDT object, try to look up the full path to the object.
6048 * Part of the MDT layer implementation of lfs fid2path.
6050 * \param[in] info Per-thread common data shared by MDT level handlers.
6051 * \param[in] obj Object to do path lookup of
6052 * \param[in,out] fp User-provided struct to store path information
6053 * \param[in] root_fid Root FID of current path should reach
6055 * \retval 0 Lookup successful, path information stored in fp
6056 * \retval -EAGAIN Lookup failed, usually because object is being moved
6057 * \retval negative errno if there was a problem
6059 static int mdt_path_current(struct mdt_thread_info *info,
6060 struct mdt_object *obj,
6061 struct getinfo_fid2path *fp,
6062 struct lu_fid *root_fid)
6064 struct mdt_device *mdt = info->mti_mdt;
6065 struct mdt_object *mdt_obj;
6066 struct link_ea_header *leh;
6067 struct link_ea_entry *lee;
6068 struct lu_name *tmpname = &info->mti_name;
6069 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
6070 struct lu_buf *buf = &info->mti_big_buf;
6073 struct linkea_data ldata = { NULL };
6078 /* temp buffer for path element, the buffer will be finally freed
6079 * in mdt_thread_info_fini */
6080 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
6081 if (buf->lb_buf == NULL)
6085 ptr = fp->gf_u.gf_path + fp->gf_pathlen - 1;
6088 *tmpfid = fp->gf_fid = *mdt_object_fid(obj);
6090 while (!lu_fid_eq(root_fid, &fp->gf_fid)) {
6091 struct lu_buf lmv_buf;
6093 if (!lu_fid_eq(root_fid, &mdt->mdt_md_root_fid) &&
6094 lu_fid_eq(&mdt->mdt_md_root_fid, &fp->gf_fid))
6095 GOTO(out, rc = -ENOENT);
6097 if (lu_fid_eq(mdt_object_fid(obj), tmpfid)) {
6099 mdt_object_get(info->mti_env, mdt_obj);
6101 mdt_obj = mdt_object_find(info->mti_env, mdt, tmpfid);
6102 if (IS_ERR(mdt_obj))
6103 GOTO(out, rc = PTR_ERR(mdt_obj));
6106 if (!mdt_object_exists(mdt_obj)) {
6107 mdt_object_put(info->mti_env, mdt_obj);
6108 GOTO(out, rc = -ENOENT);
6111 if (mdt_object_remote(mdt_obj)) {
6112 mdt_object_put(info->mti_env, mdt_obj);
6113 GOTO(remote_out, rc = -EREMOTE);
6116 rc = mdt_links_read(info, mdt_obj, &ldata);
6118 mdt_object_put(info->mti_env, mdt_obj);
6123 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
6124 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
6125 /* If set, use link #linkno for path lookup, otherwise use
6126 link #0. Only do this for the final path element. */
6127 if (first && fp->gf_linkno < leh->leh_reccount) {
6129 for (count = 0; count < fp->gf_linkno; count++) {
6130 lee = (struct link_ea_entry *)
6131 ((char *)lee + reclen);
6132 linkea_entry_unpack(lee, &reclen, tmpname,
6135 if (fp->gf_linkno < leh->leh_reccount - 1)
6136 /* indicate to user there are more links */
6140 lmv_buf.lb_buf = info->mti_xattr_buf;
6141 lmv_buf.lb_len = sizeof(info->mti_xattr_buf);
6142 /* Check if it is slave stripes */
6143 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6144 &lmv_buf, XATTR_NAME_LMV);
6145 mdt_object_put(info->mti_env, mdt_obj);
6147 union lmv_mds_md *lmm = lmv_buf.lb_buf;
6149 /* For slave stripes, get its master */
6150 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE) {
6151 fp->gf_fid = *tmpfid;
6154 } else if (rc < 0 && rc != -ENODATA) {
6160 /* Pack the name in the end of the buffer */
6161 ptr -= tmpname->ln_namelen;
6162 if (ptr - 1 <= fp->gf_u.gf_path)
6163 GOTO(out, rc = -EOVERFLOW);
6164 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
6167 /* keep the last resolved fid to the client, so the
6168 * client will build the left path on another MDT for
6170 fp->gf_fid = *tmpfid;
6176 ptr++; /* skip leading / */
6177 memmove(fp->gf_u.gf_path, ptr,
6178 fp->gf_u.gf_path + fp->gf_pathlen - ptr);
6185 * Given an MDT object, use mdt_path_current to get the path.
6186 * Essentially a wrapper to retry mdt_path_current a set number of times
6187 * if -EAGAIN is returned (usually because an object is being moved).
6189 * Part of the MDT layer implementation of lfs fid2path.
6191 * \param[in] info Per-thread common data shared by mdt level handlers.
6192 * \param[in] obj Object to do path lookup of
6193 * \param[in,out] fp User-provided struct for arguments and to store path
6196 * \retval 0 Lookup successful, path information stored in fp
6197 * \retval negative errno if there was a problem
6199 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
6200 struct getinfo_fid2path *fp, struct lu_fid *root_fid)
6202 struct mdt_device *mdt = info->mti_mdt;
6207 if (fp->gf_pathlen < 3)
6210 if (root_fid == NULL)
6211 root_fid = &mdt->mdt_md_root_fid;
6213 if (lu_fid_eq(root_fid, mdt_object_fid(obj))) {
6214 fp->gf_u.gf_path[0] = '\0';
6218 /* Retry multiple times in case file is being moved */
6219 while (tries-- && rc == -EAGAIN)
6220 rc = mdt_path_current(info, obj, fp, root_fid);
6226 * Get the full path of the provided FID, as of changelog record recno.
6228 * This checks sanity and looks up object for user provided FID
6229 * before calling the actual path lookup code.
6231 * Part of the MDT layer implementation of lfs fid2path.
6233 * \param[in] info Per-thread common data shared by mdt level handlers.
6234 * \param[in,out] fp User-provided struct for arguments and to store path
6237 * \retval 0 Lookup successful, path information and recno stored in fp
6238 * \retval -ENOENT, object does not exist
6239 * \retval negative errno if there was a problem
6241 static int mdt_fid2path(struct mdt_thread_info *info,
6242 struct lu_fid *root_fid,
6243 struct getinfo_fid2path *fp)
6245 struct mdt_device *mdt = info->mti_mdt;
6246 struct mdt_object *obj;
6250 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
6251 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
6253 if (!fid_is_sane(&fp->gf_fid))
6256 if (!fid_is_namespace_visible(&fp->gf_fid)) {
6257 CDEBUG(D_INFO, "%s: "DFID" is invalid, f_seq should be >= %#llx"
6258 ", or f_oid != 0, or f_ver == 0\n", mdt_obd_name(mdt),
6259 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
6263 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
6266 CDEBUG(D_IOCTL, "cannot find "DFID": rc = %d\n",
6267 PFID(&fp->gf_fid), rc);
6271 if (mdt_object_remote(obj))
6273 else if (!mdt_object_exists(obj))
6279 mdt_object_put(info->mti_env, obj);
6280 CDEBUG(D_IOCTL, "nonlocal object "DFID": rc = %d\n",
6281 PFID(&fp->gf_fid), rc);
6285 rc = mdt_path(info, obj, fp, root_fid);
6287 CDEBUG(D_INFO, "fid "DFID", path %s recno %#llx linkno %u\n",
6288 PFID(&fp->gf_fid), fp->gf_u.gf_path,
6289 fp->gf_recno, fp->gf_linkno);
6291 mdt_object_put(info->mti_env, obj);
6296 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key, int keylen,
6297 void *val, int vallen)
6299 struct getinfo_fid2path *fpout, *fpin;
6300 struct lu_fid *root_fid = NULL;
6303 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
6306 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
6307 lustre_swab_fid2path(fpin);
6309 memcpy(fpout, fpin, sizeof(*fpin));
6310 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
6313 if (keylen >= cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*fpin) +
6314 sizeof(struct lu_fid)) {
6315 /* client sent its root FID, which is normally fileset FID */
6316 root_fid = fpin->gf_u.gf_root_fid;
6317 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
6318 lustre_swab_lu_fid(root_fid);
6320 if (root_fid != NULL && !fid_is_sane(root_fid))
6324 rc = mdt_fid2path(info, root_fid, fpout);
6328 int mdt_get_info(struct tgt_session_info *tsi)
6338 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
6340 CDEBUG(D_IOCTL, "No GETINFO key\n");
6341 RETURN(err_serious(-EFAULT));
6343 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
6346 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
6347 if (vallen == NULL) {
6348 CDEBUG(D_IOCTL, "%s: cannot get RMF_GETINFO_VALLEN buffer\n",
6349 tgt_name(tsi->tsi_tgt));
6350 RETURN(err_serious(-EFAULT));
6353 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
6355 rc = req_capsule_server_pack(tsi->tsi_pill);
6357 RETURN(err_serious(rc));
6359 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
6360 if (valout == NULL) {
6361 CDEBUG(D_IOCTL, "%s: cannot get get-info RPC out buffer\n",
6362 tgt_name(tsi->tsi_tgt));
6363 RETURN(err_serious(-EFAULT));
6366 if (KEY_IS(KEY_FID2PATH)) {
6367 struct mdt_thread_info *info = tsi2mdt_info(tsi);
6369 rc = mdt_rpc_fid2path(info, key, keylen, valout, *vallen);
6370 mdt_thread_info_fini(info);
6377 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
6379 struct obd_ioctl_data *data = karg;
6382 struct mdt_object *obj;
6383 struct mdt_lock_handle *lh;
6387 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
6388 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
6391 fid = (struct lu_fid *)data->ioc_inlbuf1;
6393 if (!fid_is_sane(fid))
6396 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
6398 lh = &mti->mti_lh[MDT_LH_PARENT];
6399 mdt_lock_reg_init(lh, LCK_CR);
6401 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
6403 RETURN(PTR_ERR(obj));
6405 if (mdt_object_remote(obj)) {
6408 * before calling version get the correct MDS should be
6409 * fid, this is error to find remote object here
6411 CERROR("nonlocal object "DFID"\n", PFID(fid));
6412 } else if (!mdt_object_exists(obj)) {
6413 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
6416 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
6417 *(__u64 *)data->ioc_inlbuf2 = version;
6420 mdt_object_unlock_put(mti, obj, lh, 1);
6424 /* ioctls on obd dev */
6425 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
6426 void *karg, void __user *uarg)
6429 struct obd_device *obd = exp->exp_obd;
6430 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
6431 struct dt_device *dt = mdt->mdt_bottom;
6435 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
6436 rc = lu_env_init(&env, LCT_MD_THREAD);
6442 rc = mdt_device_sync(&env, mdt);
6444 case OBD_IOC_SET_READONLY:
6445 rc = dt_sync(&env, dt);
6447 rc = dt_ro(&env, dt);
6449 case OBD_IOC_ABORT_RECOVERY:
6450 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
6451 obd->obd_abort_recovery = 1;
6452 target_stop_recovery_thread(obd);
6455 case OBD_IOC_CHANGELOG_REG:
6456 case OBD_IOC_CHANGELOG_DEREG:
6457 case OBD_IOC_CHANGELOG_CLEAR:
6458 rc = mdt->mdt_child->md_ops->mdo_iocontrol(&env,
6462 case OBD_IOC_START_LFSCK: {
6463 struct md_device *next = mdt->mdt_child;
6464 struct obd_ioctl_data *data = karg;
6465 struct lfsck_start_param lsp;
6467 if (unlikely(data == NULL)) {
6472 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
6473 lsp.lsp_index_valid = 0;
6474 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
6477 case OBD_IOC_STOP_LFSCK: {
6478 struct md_device *next = mdt->mdt_child;
6479 struct obd_ioctl_data *data = karg;
6480 struct lfsck_stop stop;
6482 stop.ls_status = LS_STOPPED;
6483 /* Old lfsck utils may pass NULL @stop. */
6484 if (data->ioc_inlbuf1 == NULL)
6488 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
6490 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
6493 case OBD_IOC_QUERY_LFSCK: {
6494 struct md_device *next = mdt->mdt_child;
6495 struct obd_ioctl_data *data = karg;
6497 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0,
6501 case OBD_IOC_GET_OBJ_VERSION: {
6502 struct mdt_thread_info *mti;
6503 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6504 memset(mti, 0, sizeof *mti);
6505 mti->mti_env = &env;
6509 rc = mdt_ioc_version_get(mti, karg);
6512 case OBD_IOC_CATLOGLIST: {
6513 struct mdt_thread_info *mti;
6515 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6516 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
6517 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
6518 &mti->mti_tmp_fid1);
6523 CERROR("%s: Not supported cmd = %d, rc = %d\n",
6524 mdt_obd_name(mdt), cmd, rc);
6531 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
6533 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
6537 if (!mdt->mdt_skip_lfsck && !mdt->mdt_bottom->dd_rdonly) {
6538 struct lfsck_start_param lsp;
6540 lsp.lsp_start = NULL;
6541 lsp.lsp_index_valid = 0;
6542 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
6543 OBD_IOC_START_LFSCK,
6545 if (rc != 0 && rc != -EALREADY)
6546 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
6547 mdt_obd_name(mdt), rc);
6550 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
6554 static int mdt_obd_postrecov(struct obd_device *obd)
6559 rc = lu_env_init(&env, LCT_MD_THREAD);
6562 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
6567 static struct obd_ops mdt_obd_device_ops = {
6568 .o_owner = THIS_MODULE,
6569 .o_set_info_async = mdt_obd_set_info_async,
6570 .o_connect = mdt_obd_connect,
6571 .o_reconnect = mdt_obd_reconnect,
6572 .o_disconnect = mdt_obd_disconnect,
6573 .o_init_export = mdt_init_export,
6574 .o_destroy_export = mdt_destroy_export,
6575 .o_iocontrol = mdt_iocontrol,
6576 .o_postrecov = mdt_obd_postrecov,
6577 /* Data-on-MDT IO methods */
6578 .o_preprw = mdt_obd_preprw,
6579 .o_commitrw = mdt_obd_commitrw,
6582 static struct lu_device* mdt_device_fini(const struct lu_env *env,
6583 struct lu_device *d)
6585 struct mdt_device *m = mdt_dev(d);
6592 static struct lu_device *mdt_device_free(const struct lu_env *env,
6593 struct lu_device *d)
6595 struct mdt_device *m = mdt_dev(d);
6598 lu_device_fini(&m->mdt_lu_dev);
6604 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
6605 struct lu_device_type *t,
6606 struct lustre_cfg *cfg)
6608 struct lu_device *l;
6609 struct mdt_device *m;
6616 rc = mdt_init0(env, m, t, cfg);
6618 mdt_device_free(env, l);
6623 l = ERR_PTR(-ENOMEM);
6627 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
6628 LU_KEY_INIT(mdt, struct mdt_thread_info);
6630 static void mdt_key_fini(const struct lu_context *ctx,
6631 struct lu_context_key *key, void* data)
6633 struct mdt_thread_info *info = data;
6635 if (info->mti_big_lmm) {
6636 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
6637 info->mti_big_lmm = NULL;
6638 info->mti_big_lmmsize = 0;
6641 if (info->mti_big_acl) {
6642 OBD_FREE_LARGE(info->mti_big_acl, info->mti_big_aclsize);
6643 info->mti_big_acl = NULL;
6644 info->mti_big_aclsize = 0;
6650 /* context key: mdt_thread_key */
6651 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
6653 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
6655 return lu_ucred(info->mti_env);
6658 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
6660 return lu_ucred_check(info->mti_env);
6664 * Enable/disable COS (Commit On Sharing).
6666 * Set/Clear the COS flag in mdt options.
6668 * \param mdt mdt device
6669 * \param val 0 disables COS, other values enable COS
6671 void mdt_enable_cos(struct mdt_device *mdt, int val)
6676 mdt->mdt_opts.mo_cos = !!val;
6677 rc = lu_env_init(&env, LCT_LOCAL);
6678 if (unlikely(rc != 0)) {
6679 CWARN("%s: lu_env initialization failed, cannot "
6680 "sync: rc = %d\n", mdt_obd_name(mdt), rc);
6683 mdt_device_sync(&env, mdt);
6688 * Check COS (Commit On Sharing) status.
6690 * Return COS flag status.
6692 * \param mdt mdt device
6694 int mdt_cos_is_enabled(struct mdt_device *mdt)
6696 return mdt->mdt_opts.mo_cos != 0;
6699 static struct lu_device_type_operations mdt_device_type_ops = {
6700 .ldto_device_alloc = mdt_device_alloc,
6701 .ldto_device_free = mdt_device_free,
6702 .ldto_device_fini = mdt_device_fini
6705 static struct lu_device_type mdt_device_type = {
6706 .ldt_tags = LU_DEVICE_MD,
6707 .ldt_name = LUSTRE_MDT_NAME,
6708 .ldt_ops = &mdt_device_type_ops,
6709 .ldt_ctx_tags = LCT_MD_THREAD
6712 static int __init mdt_init(void)
6716 CLASSERT(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") ==
6717 FID_NOBRACE_LEN + 1);
6718 CLASSERT(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") ==
6720 rc = lu_kmem_init(mdt_caches);
6724 rc = mds_mod_init();
6728 rc = class_register_type(&mdt_obd_device_ops, NULL, true, NULL,
6729 LUSTRE_MDT_NAME, &mdt_device_type);
6734 lu_kmem_fini(mdt_caches);
6741 static void __exit mdt_exit(void)
6743 class_unregister_type(LUSTRE_MDT_NAME);
6745 lu_kmem_fini(mdt_caches);
6748 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
6749 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
6750 MODULE_VERSION(LUSTRE_VERSION_STRING);
6751 MODULE_LICENSE("GPL");
6753 module_init(mdt_init);
6754 module_exit(mdt_exit);