4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2010, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/mdt/mdt_handler.c
34 * Lustre Metadata Target (mdt) request handler
36 * Author: Peter Braam <braam@clusterfs.com>
37 * Author: Andreas Dilger <adilger@clusterfs.com>
38 * Author: Phil Schwan <phil@clusterfs.com>
39 * Author: Mike Shaver <shaver@clusterfs.com>
40 * Author: Nikita Danilov <nikita@clusterfs.com>
41 * Author: Huang Hua <huanghua@clusterfs.com>
42 * Author: Yury Umanets <umka@clusterfs.com>
45 #define DEBUG_SUBSYSTEM S_MDS
47 #include <linux/module.h>
48 #include <linux/pagemap.h>
50 #include <dt_object.h>
51 #include <lustre_acl.h>
52 #include <lustre_export.h>
53 #include <uapi/linux/lustre/lustre_ioctl.h>
54 #include <lustre_lfsck.h>
55 #include <lustre_log.h>
56 #include <lustre_nodemap.h>
57 #include <lustre_mds.h>
58 #include <uapi/linux/lustre/lustre_param.h>
59 #include <lustre_quota.h>
60 #include <lustre_swab.h>
62 #include <obd_support.h>
63 #include <lustre_barrier.h>
64 #include <obd_cksum.h>
65 #include <llog_swab.h>
67 #include "mdt_internal.h"
70 static unsigned int max_mod_rpcs_per_client = 8;
71 module_param(max_mod_rpcs_per_client, uint, 0644);
72 MODULE_PARM_DESC(max_mod_rpcs_per_client, "maximum number of modify RPCs in flight allowed per client");
74 mdl_mode_t mdt_mdl_lock_modes[] = {
75 [LCK_MINMODE] = MDL_MINMODE,
82 [LCK_GROUP] = MDL_GROUP
85 enum ldlm_mode mdt_dlm_lock_modes[] = {
86 [MDL_MINMODE] = LCK_MINMODE,
93 [MDL_GROUP] = LCK_GROUP
96 static struct mdt_device *mdt_dev(struct lu_device *d);
98 static const struct lu_object_operations mdt_obj_ops;
100 /* Slab for MDT object allocation */
101 static struct kmem_cache *mdt_object_kmem;
103 /* For HSM restore handles */
104 struct kmem_cache *mdt_hsm_cdt_kmem;
106 /* For HSM request handles */
107 struct kmem_cache *mdt_hsm_car_kmem;
109 static struct lu_kmem_descr mdt_caches[] = {
111 .ckd_cache = &mdt_object_kmem,
112 .ckd_name = "mdt_obj",
113 .ckd_size = sizeof(struct mdt_object)
116 .ckd_cache = &mdt_hsm_cdt_kmem,
117 .ckd_name = "mdt_cdt_restore_handle",
118 .ckd_size = sizeof(struct cdt_restore_handle)
121 .ckd_cache = &mdt_hsm_car_kmem,
122 .ckd_name = "mdt_cdt_agent_req",
123 .ckd_size = sizeof(struct cdt_agent_req)
130 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag)
134 return rep->lock_policy_res1 & op_flag;
137 void mdt_clear_disposition(struct mdt_thread_info *info,
138 struct ldlm_reply *rep, __u64 op_flag)
141 info->mti_opdata &= ~op_flag;
142 tgt_opdata_clear(info->mti_env, op_flag);
145 rep->lock_policy_res1 &= ~op_flag;
148 void mdt_set_disposition(struct mdt_thread_info *info,
149 struct ldlm_reply *rep, __u64 op_flag)
152 info->mti_opdata |= op_flag;
153 tgt_opdata_set(info->mti_env, op_flag);
156 rep->lock_policy_res1 |= op_flag;
159 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm)
161 lh->mlh_pdo_hash = 0;
162 lh->mlh_reg_mode = lm;
163 lh->mlh_rreg_mode = lm;
164 lh->mlh_type = MDT_REG_LOCK;
167 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
168 const struct lu_name *lname)
170 lh->mlh_reg_mode = lock_mode;
171 lh->mlh_pdo_mode = LCK_MINMODE;
172 lh->mlh_rreg_mode = lock_mode;
173 lh->mlh_type = MDT_PDO_LOCK;
175 if (lu_name_is_valid(lname)) {
176 lh->mlh_pdo_hash = ll_full_name_hash(NULL, lname->ln_name,
178 /* XXX Workaround for LU-2856
180 * Zero is a valid return value of full_name_hash, but
181 * several users of mlh_pdo_hash assume a non-zero
182 * hash value. We therefore map zero onto an
183 * arbitrary, but consistent value (1) to avoid
184 * problems further down the road. */
185 if (unlikely(lh->mlh_pdo_hash == 0))
186 lh->mlh_pdo_hash = 1;
188 lh->mlh_pdo_hash = 0;
192 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
193 struct mdt_lock_handle *lh)
199 * Any dir access needs couple of locks:
201 * 1) on part of dir we gonna take lookup/modify;
203 * 2) on whole dir to protect it from concurrent splitting and/or to
204 * flush client's cache for readdir().
206 * so, for a given mode and object this routine decides what lock mode
207 * to use for lock #2:
209 * 1) if caller's gonna lookup in dir then we need to protect dir from
210 * being splitted only - LCK_CR
212 * 2) if caller's gonna modify dir then we need to protect dir from
213 * being splitted and to flush cache - LCK_CW
215 * 3) if caller's gonna modify dir and that dir seems ready for
216 * splitting then we need to protect it from any type of access
217 * (lookup/modify/split) - LCK_EX --bzzz
220 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
221 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
224 * Ask underlaying level its opinion about preferable PDO lock mode
225 * having access type passed as regular lock mode:
227 * - MDL_MINMODE means that lower layer does not want to specify lock
230 * - MDL_NL means that no PDO lock should be taken. This is used in some
231 * cases. Say, for non-splittable directories no need to use PDO locks
234 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
235 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
237 if (mode != MDL_MINMODE) {
238 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
241 * Lower layer does not want to specify locking mode. We do it
242 * our selves. No special protection is needed, just flush
243 * client's cache on modification and allow concurrent
246 switch (lh->mlh_reg_mode) {
248 lh->mlh_pdo_mode = LCK_EX;
251 lh->mlh_pdo_mode = LCK_CR;
254 lh->mlh_pdo_mode = LCK_CW;
257 CERROR("Not expected lock type (0x%x)\n",
258 (int)lh->mlh_reg_mode);
263 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
267 static int mdt_lookup_fileset(struct mdt_thread_info *info, const char *fileset,
270 struct mdt_device *mdt = info->mti_mdt;
271 struct lu_name *lname = &info->mti_name;
273 struct mdt_object *parent;
277 LASSERT(!info->mti_cross_ref);
279 OBD_ALLOC(name, NAME_MAX + 1);
282 lname->ln_name = name;
285 * We may want to allow this to mount a completely separate
286 * fileset from the MDT in the future, but keeping it to
287 * ROOT/ only for now avoid potential security issues.
289 *fid = mdt->mdt_md_root_fid;
291 while (rc == 0 && fileset != NULL && *fileset != '\0') {
292 const char *s1 = fileset;
298 while (*s2 != '/' && *s2 != '\0')
306 lname->ln_namelen = s2 - s1;
307 if (lname->ln_namelen > NAME_MAX) {
312 /* reject .. as a path component */
313 if (lname->ln_namelen == 2 &&
314 strncmp(s1, "..", 2) == 0) {
319 strncpy(name, s1, lname->ln_namelen);
320 name[lname->ln_namelen] = '\0';
322 parent = mdt_object_find(info->mti_env, mdt, fid);
323 if (IS_ERR(parent)) {
324 rc = PTR_ERR(parent);
327 /* Only got the fid of this obj by name */
329 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
330 fid, &info->mti_spec);
331 mdt_object_put(info->mti_env, parent);
334 parent = mdt_object_find(info->mti_env, mdt, fid);
336 rc = PTR_ERR(parent);
338 mode = lu_object_attr(&parent->mot_obj);
339 mdt_object_put(info->mti_env, parent);
345 OBD_FREE(name, NAME_MAX + 1);
350 static int mdt_get_root(struct tgt_session_info *tsi)
352 struct mdt_thread_info *info = tsi2mdt_info(tsi);
353 struct mdt_device *mdt = info->mti_mdt;
354 struct mdt_body *repbody;
355 char *fileset = NULL, *buffer = NULL;
357 struct obd_export *exp = info->mti_exp;
358 char *nodemap_fileset;
362 rc = mdt_check_ucred(info);
364 GOTO(out, rc = err_serious(rc));
366 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GET_ROOT_PACK))
367 GOTO(out, rc = err_serious(-ENOMEM));
369 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
370 if (req_capsule_get_size(info->mti_pill, &RMF_NAME, RCL_CLIENT) > 0) {
371 fileset = req_capsule_client_get(info->mti_pill, &RMF_NAME);
373 GOTO(out, rc = err_serious(-EFAULT));
376 nodemap_fileset = nodemap_get_fileset(exp->exp_target_data.ted_nodemap);
377 if (nodemap_fileset && nodemap_fileset[0]) {
378 CDEBUG(D_INFO, "nodemap fileset is %s\n", nodemap_fileset);
380 /* consider fileset from client as a sub-fileset
381 * of the nodemap one */
382 OBD_ALLOC(buffer, PATH_MAX + 1);
384 GOTO(out, rc = err_serious(-ENOMEM));
385 if (snprintf(buffer, PATH_MAX + 1, "%s/%s",
386 nodemap_fileset, fileset) >= PATH_MAX + 1)
387 GOTO(out, rc = err_serious(-EINVAL));
390 /* enforce fileset as specified in the nodemap */
391 fileset = nodemap_fileset;
396 CDEBUG(D_INFO, "Getting fileset %s\n", fileset);
397 rc = mdt_lookup_fileset(info, fileset, &repbody->mbo_fid1);
399 GOTO(out, rc = err_serious(rc));
401 repbody->mbo_fid1 = mdt->mdt_md_root_fid;
403 repbody->mbo_valid |= OBD_MD_FLID;
407 mdt_thread_info_fini(info);
409 OBD_FREE(buffer, PATH_MAX+1);
413 static int mdt_statfs(struct tgt_session_info *tsi)
415 struct ptlrpc_request *req = tgt_ses_req(tsi);
416 struct mdt_thread_info *info = tsi2mdt_info(tsi);
417 struct mdt_device *mdt = info->mti_mdt;
418 struct tg_grants_data *tgd = &mdt->mdt_lut.lut_tgd;
419 struct ptlrpc_service_part *svcpt;
420 struct obd_statfs *osfs;
425 svcpt = req->rq_rqbd->rqbd_svcpt;
427 /* This will trigger a watchdog timeout */
428 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
429 (MDT_SERVICE_WATCHDOG_FACTOR *
430 at_get(&svcpt->scp_at_estimate)) + 1);
432 rc = mdt_check_ucred(info);
434 GOTO(out, rc = err_serious(rc));
436 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
437 GOTO(out, rc = err_serious(-ENOMEM));
439 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
441 GOTO(out, rc = -EPROTO);
443 rc = tgt_statfs_internal(tsi->tsi_env, &mdt->mdt_lut, osfs,
444 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
449 /* at least try to account for cached pages. its still racy and
450 * might be under-reporting if clients haven't announced their
451 * caches with brw recently */
452 CDEBUG(D_SUPER | D_CACHE, "blocks cached %llu granted %llu"
453 " pending %llu free %llu avail %llu\n",
454 tgd->tgd_tot_dirty, tgd->tgd_tot_granted,
455 tgd->tgd_tot_pending,
456 osfs->os_bfree << tgd->tgd_blockbits,
457 osfs->os_bavail << tgd->tgd_blockbits);
459 osfs->os_bavail -= min_t(u64, osfs->os_bavail,
460 ((tgd->tgd_tot_dirty + tgd->tgd_tot_pending +
461 osfs->os_bsize - 1) >> tgd->tgd_blockbits));
463 tgt_grant_sanity_check(mdt->mdt_lu_dev.ld_obd, __func__);
464 CDEBUG(D_CACHE, "%llu blocks: %llu free, %llu avail; "
465 "%llu objects: %llu free; state %x\n",
466 osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
467 osfs->os_files, osfs->os_ffree, osfs->os_state);
469 if (!exp_grant_param_supp(tsi->tsi_exp) &&
470 tgd->tgd_blockbits > COMPAT_BSIZE_SHIFT) {
471 /* clients which don't support OBD_CONNECT_GRANT_PARAM
472 * should not see a block size > page size, otherwise
473 * cl_lost_grant goes mad. Therefore, we emulate a 4KB (=2^12)
474 * block size which is the biggest block size known to work
475 * with all client's page size. */
476 osfs->os_blocks <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
477 osfs->os_bfree <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
478 osfs->os_bavail <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
479 osfs->os_bsize = 1 << COMPAT_BSIZE_SHIFT;
482 mdt_counter_incr(req, LPROC_MDT_STATFS);
484 mdt_thread_info_fini(info);
489 * Pack size attributes into the reply.
491 int mdt_pack_size2body(struct mdt_thread_info *info,
492 const struct lu_fid *fid, bool dom_lock)
495 struct md_attr *ma = &info->mti_attr;
500 LASSERT(ma->ma_attr.la_valid & LA_MODE);
502 if (!S_ISREG(ma->ma_attr.la_mode) ||
503 !(ma->ma_valid & MA_LOV && ma->ma_lmm != NULL))
506 dom_stripe = mdt_lmm_dom_entry(ma->ma_lmm);
507 /* no DoM stripe, no size in reply */
508 if (dom_stripe == LMM_NO_DOM)
511 /* no DoM lock, no size in reply */
515 /* Either DoM lock exists or LMM has only DoM stripe then
516 * return size on body. */
517 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
519 mdt_dom_object_size(info->mti_env, info->mti_mdt, fid, b, dom_lock);
523 #ifdef CONFIG_FS_POSIX_ACL
525 * Pack ACL data into the reply. UIDs/GIDs are mapped and filtered by nodemap.
527 * \param info thread info object
528 * \param repbody reply to pack ACLs into
529 * \param o mdt object of file to examine
530 * \param nodemap nodemap of client to reply to
532 * \retval -errno error getting or parsing ACL from disk
534 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
535 struct mdt_object *o, struct lu_nodemap *nodemap)
537 const struct lu_env *env = info->mti_env;
538 struct md_object *next = mdt_object_child(o);
539 struct lu_buf *buf = &info->mti_buf;
540 struct mdt_device *mdt = info->mti_mdt;
541 struct req_capsule *pill = info->mti_pill;
546 buf->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
547 buf->lb_len = req_capsule_get_size(pill, &RMF_ACL, RCL_SERVER);
548 if (buf->lb_len == 0)
552 rc = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_ACCESS);
554 if (rc == -ENODATA) {
555 repbody->mbo_aclsize = 0;
556 repbody->mbo_valid |= OBD_MD_FLACL;
558 } else if (rc == -EOPNOTSUPP) {
562 exp_connect_large_acl(info->mti_exp) &&
563 buf->lb_buf != info->mti_big_acl) {
564 if (info->mti_big_acl == NULL) {
565 OBD_ALLOC_LARGE(info->mti_big_acl,
566 mdt->mdt_max_ea_size);
567 if (info->mti_big_acl == NULL) {
568 CERROR("%s: unable to grow "
571 PFID(mdt_object_fid(o)));
575 info->mti_big_aclsize =
576 mdt->mdt_max_ea_size;
579 CDEBUG(D_INODE, "%s: grow the "DFID
580 " ACL buffer to size %d\n",
582 PFID(mdt_object_fid(o)),
583 mdt->mdt_max_ea_size);
585 buf->lb_buf = info->mti_big_acl;
586 buf->lb_len = info->mti_big_aclsize;
591 CERROR("%s: unable to read "DFID" ACL: rc = %d\n",
592 mdt_obd_name(mdt), PFID(mdt_object_fid(o)), rc);
601 acl_buflen = req_capsule_get_size(pill, &RMF_ACL, RCL_SERVER);
602 if (acl_buflen >= rc)
605 /* If LOV/LMA EA is small, we can reuse part of their buffer */
606 client = ptlrpc_req_get_repsize(pill->rc_req);
607 server = lustre_packed_msg_size(pill->rc_req->rq_repmsg);
608 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER)) {
609 lmm_buflen = req_capsule_get_size(pill, &RMF_MDT_MD,
611 lmmsize = repbody->mbo_eadatasize;
614 if (client < server - acl_buflen - lmm_buflen + rc + lmmsize) {
615 CDEBUG(D_INODE, "%s: client prepared buffer size %d "
616 "is not big enough with the ACL size %d (%d)\n",
617 mdt_obd_name(mdt), client, rc,
618 server - acl_buflen - lmm_buflen + rc + lmmsize);
619 repbody->mbo_aclsize = 0;
620 repbody->mbo_valid &= ~OBD_MD_FLACL;
625 if (buf->lb_buf == info->mti_big_acl)
626 info->mti_big_acl_used = 1;
628 rc = nodemap_map_acl(nodemap, buf->lb_buf,
629 rc, NODEMAP_FS_TO_CLIENT);
630 /* if all ACLs mapped out, rc is still >= 0 */
632 CERROR("%s: nodemap_map_acl unable to parse "DFID
633 " ACL: rc = %d\n", mdt_obd_name(mdt),
634 PFID(mdt_object_fid(o)), rc);
635 repbody->mbo_aclsize = 0;
636 repbody->mbo_valid &= ~OBD_MD_FLACL;
638 repbody->mbo_aclsize = rc;
639 repbody->mbo_valid |= OBD_MD_FLACL;
648 /* XXX Look into layout in MDT layer. */
649 static inline bool mdt_hsm_is_released(struct lov_mds_md *lmm)
651 struct lov_comp_md_v1 *comp_v1;
652 struct lov_mds_md *v1;
655 if (lmm->lmm_magic == LOV_MAGIC_COMP_V1) {
656 comp_v1 = (struct lov_comp_md_v1 *)lmm;
658 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
659 v1 = (struct lov_mds_md *)((char *)comp_v1 +
660 comp_v1->lcm_entries[i].lcme_offset);
661 /* We don't support partial release for now */
662 if (!(v1->lmm_pattern & LOV_PATTERN_F_RELEASED))
667 return (lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) ?
672 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
673 const struct lu_attr *attr, const struct lu_fid *fid)
675 struct md_attr *ma = &info->mti_attr;
676 struct obd_export *exp = info->mti_exp;
677 struct lu_nodemap *nodemap = NULL;
679 LASSERT(ma->ma_valid & MA_INODE);
681 if (attr->la_valid & LA_ATIME) {
682 b->mbo_atime = attr->la_atime;
683 b->mbo_valid |= OBD_MD_FLATIME;
685 if (attr->la_valid & LA_MTIME) {
686 b->mbo_mtime = attr->la_mtime;
687 b->mbo_valid |= OBD_MD_FLMTIME;
689 if (attr->la_valid & LA_CTIME) {
690 b->mbo_ctime = attr->la_ctime;
691 b->mbo_valid |= OBD_MD_FLCTIME;
693 if (attr->la_valid & LA_FLAGS) {
694 b->mbo_flags = attr->la_flags;
695 b->mbo_valid |= OBD_MD_FLFLAGS;
697 if (attr->la_valid & LA_NLINK) {
698 b->mbo_nlink = attr->la_nlink;
699 b->mbo_valid |= OBD_MD_FLNLINK;
701 if (attr->la_valid & (LA_UID|LA_GID)) {
702 nodemap = nodemap_get_from_exp(exp);
706 if (attr->la_valid & LA_UID) {
707 b->mbo_uid = nodemap_map_id(nodemap, NODEMAP_UID,
708 NODEMAP_FS_TO_CLIENT,
710 b->mbo_valid |= OBD_MD_FLUID;
712 if (attr->la_valid & LA_GID) {
713 b->mbo_gid = nodemap_map_id(nodemap, NODEMAP_GID,
714 NODEMAP_FS_TO_CLIENT,
716 b->mbo_valid |= OBD_MD_FLGID;
719 if (attr->la_valid & LA_PROJID) {
720 /* TODO, nodemap for project id */
721 b->mbo_projid = attr->la_projid;
722 b->mbo_valid |= OBD_MD_FLPROJID;
725 b->mbo_mode = attr->la_mode;
726 if (attr->la_valid & LA_MODE)
727 b->mbo_valid |= OBD_MD_FLMODE;
728 if (attr->la_valid & LA_TYPE)
729 b->mbo_valid |= OBD_MD_FLTYPE;
733 b->mbo_valid |= OBD_MD_FLID;
734 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, valid=%#llx\n",
735 PFID(fid), b->mbo_nlink, b->mbo_mode, b->mbo_valid);
738 if (!(attr->la_valid & LA_TYPE))
741 b->mbo_rdev = attr->la_rdev;
742 b->mbo_size = attr->la_size;
743 b->mbo_blocks = attr->la_blocks;
745 if (!S_ISREG(attr->la_mode)) {
746 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
747 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
748 /* means no objects are allocated on osts. */
749 LASSERT(!(ma->ma_valid & MA_LOV));
750 /* just ignore blocks occupied by extend attributes on MDS */
752 /* if no object is allocated on osts, the size on mds is valid.
754 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
755 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL) {
756 if (mdt_hsm_is_released(ma->ma_lmm)) {
757 /* A released file stores its size on MDS. */
758 /* But return 1 block for released file, unless tools
759 * like tar will consider it fully sparse. (LU-3864)
761 if (unlikely(b->mbo_size == 0))
765 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
766 } else if (info->mti_som_valid) { /* som is valid */
767 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
771 if (fid != NULL && (b->mbo_valid & OBD_MD_FLSIZE))
772 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
773 PFID(fid), (unsigned long long)b->mbo_size);
776 if (!IS_ERR_OR_NULL(nodemap))
777 nodemap_putref(nodemap);
780 static inline int mdt_body_has_lov(const struct lu_attr *la,
781 const struct mdt_body *body)
783 return (S_ISREG(la->la_mode) && (body->mbo_valid & OBD_MD_FLEASIZE)) ||
784 (S_ISDIR(la->la_mode) && (body->mbo_valid & OBD_MD_FLDIREA));
787 void mdt_client_compatibility(struct mdt_thread_info *info)
789 struct mdt_body *body;
790 struct ptlrpc_request *req = mdt_info_req(info);
791 struct obd_export *exp = req->rq_export;
792 struct md_attr *ma = &info->mti_attr;
793 struct lu_attr *la = &ma->ma_attr;
796 if (exp_connect_layout(exp))
797 /* the client can deal with 16-bit lmm_stripe_count */
800 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
802 if (!mdt_body_has_lov(la, body))
805 /* now we have a reply with a lov for a client not compatible with the
806 * layout lock so we have to clean the layout generation number */
807 if (S_ISREG(la->la_mode))
808 ma->ma_lmm->lmm_layout_gen = 0;
812 static int mdt_attr_get_eabuf_size(struct mdt_thread_info *info,
813 struct mdt_object *o)
815 const struct lu_env *env = info->mti_env;
818 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
827 /* Is it a directory? Let's check for the LMV as well */
828 if (S_ISDIR(lu_object_attr(&mdt_object_child(o)->mo_lu))) {
829 rc2 = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
833 rc2 = mo_xattr_get(env, mdt_object_child(o),
835 XATTR_NAME_DEFAULT_LMV);
837 if ((rc2 < 0 && rc2 != -ENODATA) || (rc2 > rc))
845 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
848 const struct lu_env *env = info->mti_env;
852 LASSERT(info->mti_big_lmm_used == 0);
853 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
857 /* big_lmm may need to be grown */
858 if (info->mti_big_lmmsize < rc) {
859 int size = size_roundup_power2(rc);
861 if (info->mti_big_lmmsize > 0) {
862 /* free old buffer */
863 LASSERT(info->mti_big_lmm);
864 OBD_FREE_LARGE(info->mti_big_lmm,
865 info->mti_big_lmmsize);
866 info->mti_big_lmm = NULL;
867 info->mti_big_lmmsize = 0;
870 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
871 if (info->mti_big_lmm == NULL)
873 info->mti_big_lmmsize = size;
875 LASSERT(info->mti_big_lmmsize >= rc);
877 info->mti_buf.lb_buf = info->mti_big_lmm;
878 info->mti_buf.lb_len = info->mti_big_lmmsize;
879 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
884 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
885 struct md_attr *ma, const char *name)
887 struct md_object *next = mdt_object_child(o);
888 struct lu_buf *buf = &info->mti_buf;
891 if (strcmp(name, XATTR_NAME_LOV) == 0) {
892 buf->lb_buf = ma->ma_lmm;
893 buf->lb_len = ma->ma_lmm_size;
894 LASSERT(!(ma->ma_valid & MA_LOV));
895 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
896 buf->lb_buf = ma->ma_lmv;
897 buf->lb_len = ma->ma_lmv_size;
898 LASSERT(!(ma->ma_valid & MA_LMV));
899 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
900 buf->lb_buf = ma->ma_lmv;
901 buf->lb_len = ma->ma_lmv_size;
902 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
907 rc = mo_xattr_get(info->mti_env, next, buf, name);
911 if (strcmp(name, XATTR_NAME_LOV) == 0) {
912 if (info->mti_big_lmm_used)
913 ma->ma_lmm = info->mti_big_lmm;
915 /* NOT return LOV EA with hole to old client. */
916 if (unlikely(le32_to_cpu(ma->ma_lmm->lmm_pattern) &
917 LOV_PATTERN_F_HOLE) &&
918 !(exp_connect_flags(info->mti_exp) &
919 OBD_CONNECT_LFSCK)) {
922 ma->ma_lmm_size = rc;
923 ma->ma_valid |= MA_LOV;
925 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
926 if (info->mti_big_lmm_used)
927 ma->ma_lmv = info->mti_big_lmm;
929 ma->ma_lmv_size = rc;
930 ma->ma_valid |= MA_LMV;
931 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
932 ma->ma_lmv_size = rc;
933 ma->ma_valid |= MA_LMV_DEF;
936 /* Update mdt_max_mdsize so all clients will be aware that */
937 if (info->mti_mdt->mdt_max_mdsize < rc)
938 info->mti_mdt->mdt_max_mdsize = rc;
941 } else if (rc == -ENODATA) {
944 } else if (rc == -ERANGE) {
945 /* Default LMV has fixed size, so it must be able to fit
946 * in the original buffer */
947 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
949 rc = mdt_big_xattr_get(info, o, name);
951 info->mti_big_lmm_used = 1;
959 static int mdt_attr_get_pfid(struct mdt_thread_info *info,
960 struct mdt_object *o, struct lu_fid *pfid)
962 struct lu_buf *buf = &info->mti_buf;
963 struct link_ea_header *leh;
964 struct link_ea_entry *lee;
968 buf->lb_buf = info->mti_big_lmm;
969 buf->lb_len = info->mti_big_lmmsize;
970 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
971 buf, XATTR_NAME_LINK);
972 /* ignore errors, MA_PFID won't be set and it is
973 * up to the caller to treat this as an error */
974 if (rc == -ERANGE || buf->lb_len == 0) {
975 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
976 buf->lb_buf = info->mti_big_lmm;
977 buf->lb_len = info->mti_big_lmmsize;
982 if (rc < sizeof(*leh)) {
983 CERROR("short LinkEA on "DFID": rc = %d\n",
984 PFID(mdt_object_fid(o)), rc);
988 leh = (struct link_ea_header *) buf->lb_buf;
989 lee = (struct link_ea_entry *)(leh + 1);
990 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
991 leh->leh_magic = LINK_EA_MAGIC;
992 leh->leh_reccount = __swab32(leh->leh_reccount);
993 leh->leh_len = __swab64(leh->leh_len);
995 if (leh->leh_magic != LINK_EA_MAGIC)
997 if (leh->leh_reccount == 0)
1000 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
1001 fid_be_to_cpu(pfid, pfid);
1006 int mdt_attr_get_complex(struct mdt_thread_info *info,
1007 struct mdt_object *o, struct md_attr *ma)
1009 const struct lu_env *env = info->mti_env;
1010 struct md_object *next = mdt_object_child(o);
1011 struct lu_buf *buf = &info->mti_buf;
1012 int need = ma->ma_need;
1019 if (mdt_object_exists(o) == 0)
1020 GOTO(out, rc = -ENOENT);
1021 mode = lu_object_attr(&next->mo_lu);
1023 if (need & MA_INODE) {
1024 ma->ma_need = MA_INODE;
1025 rc = mo_attr_get(env, next, ma);
1030 (void) mdt_get_som(info, o, &ma->ma_attr);
1031 ma->ma_valid |= MA_INODE;
1034 if (need & MA_PFID) {
1035 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
1037 ma->ma_valid |= MA_PFID;
1038 /* ignore this error, parent fid is not mandatory */
1042 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
1043 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
1048 if (need & MA_LMV && S_ISDIR(mode)) {
1049 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
1054 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
1055 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
1060 if (need & MA_HSM && S_ISREG(mode)) {
1061 buf->lb_buf = info->mti_xattr_buf;
1062 buf->lb_len = sizeof(info->mti_xattr_buf);
1063 CLASSERT(sizeof(struct hsm_attrs) <=
1064 sizeof(info->mti_xattr_buf));
1065 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
1066 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
1068 ma->ma_valid |= MA_HSM;
1069 else if (rc2 < 0 && rc2 != -ENODATA)
1070 GOTO(out, rc = rc2);
1073 #ifdef CONFIG_FS_POSIX_ACL
1074 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
1075 buf->lb_buf = ma->ma_acl;
1076 buf->lb_len = ma->ma_acl_size;
1077 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
1079 ma->ma_acl_size = rc2;
1080 ma->ma_valid |= MA_ACL_DEF;
1081 } else if (rc2 == -ENODATA) {
1083 ma->ma_acl_size = 0;
1085 GOTO(out, rc = rc2);
1090 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = %#llx ma_lmm=%p\n",
1091 rc, ma->ma_valid, ma->ma_lmm);
1095 static int mdt_getattr_internal(struct mdt_thread_info *info,
1096 struct mdt_object *o, int ma_need)
1098 struct md_object *next = mdt_object_child(o);
1099 const struct mdt_body *reqbody = info->mti_body;
1100 struct ptlrpc_request *req = mdt_info_req(info);
1101 struct md_attr *ma = &info->mti_attr;
1102 struct lu_attr *la = &ma->ma_attr;
1103 struct req_capsule *pill = info->mti_pill;
1104 const struct lu_env *env = info->mti_env;
1105 struct mdt_body *repbody;
1106 struct lu_buf *buffer = &info->mti_buf;
1107 struct obd_export *exp = info->mti_exp;
1111 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
1112 RETURN(err_serious(-ENOMEM));
1114 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1118 if (mdt_object_remote(o)) {
1119 /* This object is located on remote node.*/
1120 /* Return -ENOTSUPP for old client */
1121 if (!mdt_is_dne_client(req->rq_export))
1122 GOTO(out, rc = -ENOTSUPP);
1124 repbody->mbo_fid1 = *mdt_object_fid(o);
1125 repbody->mbo_valid = OBD_MD_FLID | OBD_MD_MDS;
1129 if (reqbody->mbo_eadatasize > 0) {
1130 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
1131 if (buffer->lb_buf == NULL)
1132 GOTO(out, rc = -EPROTO);
1133 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD,
1136 buffer->lb_buf = NULL;
1138 ma_need &= ~(MA_LOV | MA_LMV);
1139 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
1140 mdt_obd_name(info->mti_mdt),
1141 req->rq_export->exp_client_uuid.uuid);
1144 /* If it is dir object and client require MEA, then we got MEA */
1145 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1146 (reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
1147 /* Assumption: MDT_MD size is enough for lmv size. */
1148 ma->ma_lmv = buffer->lb_buf;
1149 ma->ma_lmv_size = buffer->lb_len;
1150 ma->ma_need = MA_INODE;
1151 if (ma->ma_lmv_size > 0) {
1152 if (reqbody->mbo_valid & OBD_MD_MEA)
1153 ma->ma_need |= MA_LMV;
1154 else if (reqbody->mbo_valid & OBD_MD_DEFAULT_MEA)
1155 ma->ma_need |= MA_LMV_DEF;
1158 ma->ma_lmm = buffer->lb_buf;
1159 ma->ma_lmm_size = buffer->lb_len;
1160 ma->ma_need = MA_INODE | MA_HSM;
1161 if (ma->ma_lmm_size > 0)
1162 ma->ma_need |= MA_LOV;
1165 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1166 reqbody->mbo_valid & OBD_MD_FLDIREA &&
1167 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
1168 /* get default stripe info for this dir. */
1169 ma->ma_need |= MA_LOV_DEF;
1171 ma->ma_need |= ma_need;
1173 rc = mdt_attr_get_complex(info, o, ma);
1175 CDEBUG(rc == -ENOENT ? D_OTHER : D_ERROR,
1176 "%s: getattr error for "DFID": rc = %d\n",
1177 mdt_obd_name(info->mti_mdt),
1178 PFID(mdt_object_fid(o)), rc);
1182 /* if file is released, check if a restore is running */
1183 if (ma->ma_valid & MA_HSM) {
1184 repbody->mbo_valid |= OBD_MD_TSTATE;
1185 if ((ma->ma_hsm.mh_flags & HS_RELEASED) &&
1186 mdt_hsm_restore_is_running(info, mdt_object_fid(o)))
1187 repbody->mbo_t_state = MS_RESTORE;
1190 if (likely(ma->ma_valid & MA_INODE))
1191 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
1195 if (mdt_body_has_lov(la, reqbody)) {
1196 if (ma->ma_valid & MA_LOV) {
1197 LASSERT(ma->ma_lmm_size);
1198 repbody->mbo_eadatasize = ma->ma_lmm_size;
1199 if (S_ISDIR(la->la_mode))
1200 repbody->mbo_valid |= OBD_MD_FLDIREA;
1202 repbody->mbo_valid |= OBD_MD_FLEASIZE;
1203 mdt_dump_lmm(D_INFO, ma->ma_lmm, repbody->mbo_valid);
1205 if (ma->ma_valid & MA_LMV) {
1206 /* Return -ENOTSUPP for old client */
1207 if (!mdt_is_striped_client(req->rq_export))
1210 LASSERT(S_ISDIR(la->la_mode));
1211 mdt_dump_lmv(D_INFO, ma->ma_lmv);
1212 repbody->mbo_eadatasize = ma->ma_lmv_size;
1213 repbody->mbo_valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
1215 if (ma->ma_valid & MA_LMV_DEF) {
1216 /* Return -ENOTSUPP for old client */
1217 if (!mdt_is_striped_client(req->rq_export))
1219 LASSERT(S_ISDIR(la->la_mode));
1220 mdt_dump_lmv(D_INFO, ma->ma_lmv);
1221 repbody->mbo_eadatasize = ma->ma_lmv_size;
1222 repbody->mbo_valid |= (OBD_MD_FLDIREA |
1223 OBD_MD_DEFAULT_MEA);
1225 } else if (S_ISLNK(la->la_mode) &&
1226 reqbody->mbo_valid & OBD_MD_LINKNAME) {
1227 buffer->lb_buf = ma->ma_lmm;
1228 /* eadatasize from client includes NULL-terminator, so
1229 * there is no need to read it */
1230 buffer->lb_len = reqbody->mbo_eadatasize - 1;
1231 rc = mo_readlink(env, next, buffer);
1232 if (unlikely(rc <= 0)) {
1233 CERROR("%s: readlink failed for "DFID": rc = %d\n",
1234 mdt_obd_name(info->mti_mdt),
1235 PFID(mdt_object_fid(o)), rc);
1238 int print_limit = min_t(int, PAGE_SIZE - 128, rc);
1240 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
1242 repbody->mbo_valid |= OBD_MD_LINKNAME;
1243 /* we need to report back size with NULL-terminator
1244 * because client expects that */
1245 repbody->mbo_eadatasize = rc + 1;
1246 if (repbody->mbo_eadatasize != reqbody->mbo_eadatasize)
1247 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
1248 "on "DFID ", expected %d\n",
1249 mdt_obd_name(info->mti_mdt),
1250 rc, PFID(mdt_object_fid(o)),
1251 reqbody->mbo_eadatasize - 1);
1252 /* NULL terminate */
1253 ((char *)ma->ma_lmm)[rc] = 0;
1255 /* If the total CDEBUG() size is larger than a page, it
1256 * will print a warning to the console, avoid this by
1257 * printing just the last part of the symlink. */
1258 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
1259 print_limit < rc ? "..." : "", print_limit,
1260 (char *)ma->ma_lmm + rc - print_limit, rc);
1265 if (reqbody->mbo_valid & OBD_MD_FLMODEASIZE) {
1266 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
1267 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
1268 CDEBUG(D_INODE, "changing the max MD size to %u\n",
1269 repbody->mbo_max_mdsize);
1272 #ifdef CONFIG_FS_POSIX_ACL
1273 if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
1274 (reqbody->mbo_valid & OBD_MD_FLACL)) {
1275 struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
1276 if (IS_ERR(nodemap))
1277 RETURN(PTR_ERR(nodemap));
1279 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
1280 nodemap_putref(nodemap);
1286 mdt_counter_incr(req, LPROC_MDT_GETATTR);
1291 static int mdt_getattr(struct tgt_session_info *tsi)
1293 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1294 struct mdt_object *obj = info->mti_object;
1295 struct req_capsule *pill = info->mti_pill;
1296 struct mdt_body *reqbody;
1297 struct mdt_body *repbody;
1301 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1303 LASSERT(obj != NULL);
1304 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1306 /* Special case for Data-on-MDT files to get data version */
1307 if (unlikely(reqbody->mbo_valid & OBD_MD_FLDATAVERSION)) {
1308 rc = mdt_data_version_get(tsi);
1312 /* Unlike intent case where we need to pre-fill out buffers early on
1313 * in intent policy for ldlm reasons, here we can have a much better
1314 * guess at EA size by just reading it from disk.
1315 * Exceptions are readdir and (missing) directory striping */
1317 if (reqbody->mbo_valid & OBD_MD_LINKNAME) {
1318 /* No easy way to know how long is the symlink, but it cannot
1319 * be more than PATH_MAX, so we allocate +1 */
1321 /* A special case for fs ROOT: getattr there might fetch
1322 * default EA for entire fs, not just for this dir!
1324 } else if (lu_fid_eq(mdt_object_fid(obj),
1325 &info->mti_mdt->mdt_md_root_fid) &&
1326 (reqbody->mbo_valid & OBD_MD_FLDIREA) &&
1327 (lustre_msg_get_opc(mdt_info_req(info)->rq_reqmsg) ==
1329 /* Should the default strping be bigger, mdt_fix_reply
1330 * will reallocate */
1331 rc = DEF_REP_MD_SIZE;
1333 /* Read the actual EA size from disk */
1334 rc = mdt_attr_get_eabuf_size(info, obj);
1338 GOTO(out, rc = err_serious(rc));
1340 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, rc);
1342 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
1343 * by default. If the target object has more ACL entries, then
1344 * enlarge the buffer when necessary. */
1345 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
1346 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
1348 rc = req_capsule_server_pack(pill);
1349 if (unlikely(rc != 0))
1350 GOTO(out, rc = err_serious(rc));
1352 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1353 LASSERT(repbody != NULL);
1354 repbody->mbo_eadatasize = 0;
1355 repbody->mbo_aclsize = 0;
1357 rc = mdt_check_ucred(info);
1359 GOTO(out_shrink, rc);
1361 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1363 rc = mdt_getattr_internal(info, obj, 0);
1366 mdt_client_compatibility(info);
1367 rc2 = mdt_fix_reply(info);
1371 mdt_thread_info_fini(info);
1376 * Handler of layout intent RPC requiring the layout modification
1378 * \param[in] info thread environment
1379 * \param[in] obj object
1380 * \param[in] layout layout change descriptor
1382 * \retval 0 on success
1383 * \retval < 0 error code
1385 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
1386 struct md_layout_change *layout)
1388 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LOCAL];
1392 if (!mdt_object_exists(obj))
1393 GOTO(out, rc = -ENOENT);
1395 if (!S_ISREG(lu_object_attr(&obj->mot_obj)))
1396 GOTO(out, rc = -EINVAL);
1398 rc = mo_permission(info->mti_env, NULL, mdt_object_child(obj), NULL,
1403 /* take layout lock to prepare layout change */
1404 mdt_lock_reg_init(lh, LCK_EX);
1405 rc = mdt_object_lock(info, obj, lh, MDS_INODELOCK_LAYOUT);
1409 rc = mo_layout_change(info->mti_env, mdt_object_child(obj), layout);
1411 mdt_object_unlock(info, obj, lh, 1);
1417 * Exchange MOF_LOV_CREATED flags between two objects after a
1418 * layout swap. No assumption is made on whether o1 or o2 have
1419 * created objects or not.
1421 * \param[in,out] o1 First swap layout object
1422 * \param[in,out] o2 Second swap layout object
1424 static void mdt_swap_lov_flag(struct mdt_object *o1, struct mdt_object *o2)
1426 unsigned int o1_lov_created = o1->mot_lov_created;
1428 mutex_lock(&o1->mot_lov_mutex);
1429 mutex_lock(&o2->mot_lov_mutex);
1431 o1->mot_lov_created = o2->mot_lov_created;
1432 o2->mot_lov_created = o1_lov_created;
1434 mutex_unlock(&o2->mot_lov_mutex);
1435 mutex_unlock(&o1->mot_lov_mutex);
1438 static int mdt_swap_layouts(struct tgt_session_info *tsi)
1440 struct mdt_thread_info *info;
1441 struct ptlrpc_request *req = tgt_ses_req(tsi);
1442 struct obd_export *exp = req->rq_export;
1443 struct mdt_object *o1, *o2, *o;
1444 struct mdt_lock_handle *lh1, *lh2;
1445 struct mdc_swap_layouts *msl;
1449 /* client does not support layout lock, so layout swaping
1451 * FIXME: there is a problem for old clients which don't support
1452 * layout lock yet. If those clients have already opened the file
1453 * they won't be notified at all so that old layout may still be
1454 * used to do IO. This can be fixed after file release is landed by
1455 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1456 if (!exp_connect_layout(exp))
1457 RETURN(-EOPNOTSUPP);
1459 info = tsi2mdt_info(tsi);
1461 if (info->mti_dlm_req != NULL)
1462 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
1464 o1 = info->mti_object;
1465 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1466 &info->mti_body->mbo_fid2);
1468 GOTO(out, rc = PTR_ERR(o));
1470 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1471 GOTO(put, rc = -ENOENT);
1473 rc = lu_fid_cmp(&info->mti_body->mbo_fid1, &info->mti_body->mbo_fid2);
1474 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1480 /* permission check. Make sure the calling process having permission
1481 * to write both files. */
1482 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1487 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1492 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1494 GOTO(put, rc = -EPROTO);
1496 lh1 = &info->mti_lh[MDT_LH_NEW];
1497 mdt_lock_reg_init(lh1, LCK_EX);
1498 lh2 = &info->mti_lh[MDT_LH_OLD];
1499 mdt_lock_reg_init(lh2, LCK_EX);
1501 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1502 MDS_INODELOCK_XATTR);
1506 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1507 MDS_INODELOCK_XATTR);
1511 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1512 mdt_object_child(o2), msl->msl_flags);
1516 mdt_swap_lov_flag(o1, o2);
1519 mdt_object_unlock(info, o2, lh2, rc);
1521 mdt_object_unlock(info, o1, lh1, rc);
1523 mdt_object_put(info->mti_env, o);
1525 mdt_thread_info_fini(info);
1529 static int mdt_raw_lookup(struct mdt_thread_info *info,
1530 struct mdt_object *parent,
1531 const struct lu_name *lname,
1532 struct ldlm_reply *ldlm_rep)
1534 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1538 LASSERT(!info->mti_cross_ref);
1540 /* Only got the fid of this obj by name */
1541 fid_zero(child_fid);
1542 rc = mdo_lookup(info->mti_env, mdt_object_child(info->mti_object),
1543 lname, child_fid, &info->mti_spec);
1545 struct mdt_body *repbody;
1547 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1548 repbody->mbo_fid1 = *child_fid;
1549 repbody->mbo_valid = OBD_MD_FLID;
1550 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1551 } else if (rc == -ENOENT) {
1552 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1559 * UPDATE lock should be taken against parent, and be released before exit;
1560 * child_bits lock should be taken against child, and be returned back:
1561 * (1)normal request should release the child lock;
1562 * (2)intent request will grant the lock to client.
1564 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1565 struct mdt_lock_handle *lhc,
1567 struct ldlm_reply *ldlm_rep)
1569 struct ptlrpc_request *req = mdt_info_req(info);
1570 struct mdt_body *reqbody = NULL;
1571 struct mdt_object *parent = info->mti_object;
1572 struct mdt_object *child;
1573 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1574 struct lu_name *lname = NULL;
1575 struct mdt_lock_handle *lhp = NULL;
1576 struct ldlm_lock *lock;
1584 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1585 LASSERT(ergo(is_resent,
1586 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1591 if (info->mti_cross_ref) {
1592 /* Only getattr on the child. Parent is on another node. */
1593 mdt_set_disposition(info, ldlm_rep,
1594 DISP_LOOKUP_EXECD | DISP_LOOKUP_POS);
1596 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1598 PFID(mdt_object_fid(child)), ldlm_rep);
1600 rc = mdt_check_resent_lock(info, child, lhc);
1603 } else if (rc > 0) {
1604 mdt_lock_handle_init(lhc);
1605 mdt_lock_reg_init(lhc, LCK_PR);
1608 * Object's name is on another MDS, no lookup or layout
1609 * lock is needed here but update lock is.
1611 child_bits &= ~(MDS_INODELOCK_LOOKUP |
1612 MDS_INODELOCK_LAYOUT);
1613 child_bits |= MDS_INODELOCK_PERM | MDS_INODELOCK_UPDATE;
1615 rc = mdt_object_lock(info, child, lhc, child_bits);
1620 /* Finally, we can get attr for child. */
1621 if (!mdt_object_exists(child)) {
1622 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
1624 "remote object doesn't exist.");
1625 mdt_object_unlock(info, child, lhc, 1);
1629 rc = mdt_getattr_internal(info, child, 0);
1630 if (unlikely(rc != 0))
1631 mdt_object_unlock(info, child, lhc, 1);
1636 lname = &info->mti_name;
1637 mdt_name_unpack(info->mti_pill, &RMF_NAME, lname, MNF_FIX_ANON);
1639 if (lu_name_is_valid(lname)) {
1640 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", "
1641 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1642 PNAME(lname), ldlm_rep);
1644 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1645 if (unlikely(reqbody == NULL))
1646 RETURN(err_serious(-EPROTO));
1648 *child_fid = reqbody->mbo_fid2;
1650 if (unlikely(!fid_is_sane(child_fid)))
1651 RETURN(err_serious(-EINVAL));
1653 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1655 PFID(mdt_object_fid(parent)),
1656 PFID(&reqbody->mbo_fid2), ldlm_rep);
1659 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1661 if (unlikely(!mdt_object_exists(parent)) && lu_name_is_valid(lname)) {
1662 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1664 "Parent doesn't exist!");
1668 if (mdt_object_remote(parent)) {
1669 CERROR("%s: parent "DFID" is on remote target\n",
1670 mdt_obd_name(info->mti_mdt),
1671 PFID(mdt_object_fid(parent)));
1675 if (lu_name_is_valid(lname)) {
1676 /* Always allow to lookup ".." */
1677 if (unlikely(lname->ln_namelen == 2 &&
1678 lname->ln_name[0] == '.' &&
1679 lname->ln_name[1] == '.'))
1680 info->mti_spec.sp_permitted = 1;
1682 if (info->mti_body->mbo_valid == OBD_MD_FLID) {
1683 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1688 /* step 1: lock parent only if parent is a directory */
1689 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
1690 lhp = &info->mti_lh[MDT_LH_PARENT];
1691 mdt_lock_pdo_init(lhp, LCK_PR, lname);
1692 rc = mdt_object_lock(info, parent, lhp,
1693 MDS_INODELOCK_UPDATE);
1694 if (unlikely(rc != 0))
1698 /* step 2: lookup child's fid by name */
1699 fid_zero(child_fid);
1700 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
1701 child_fid, &info->mti_spec);
1703 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1706 GOTO(out_parent, rc);
1709 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1712 *step 3: find the child object by fid & lock it.
1713 * regardless if it is local or remote.
1715 *Note: LU-3240 (commit 762f2114d282a98ebfa4dbbeea9298a8088ad24e)
1716 * set parent dir fid the same as child fid in getattr by fid case
1717 * we should not lu_object_find() the object again, could lead
1718 * to hung if there is a concurrent unlink destroyed the object.
1720 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
1721 mdt_object_get(info->mti_env, parent);
1724 child = mdt_object_find(info->mti_env, info->mti_mdt,
1728 if (unlikely(IS_ERR(child)))
1729 GOTO(out_parent, rc = PTR_ERR(child));
1731 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout * 2);
1732 if (!mdt_object_exists(child)) {
1733 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1735 "Object doesn't exist!");
1736 GOTO(out_child, rc = -ENOENT);
1739 rc = mdt_check_resent_lock(info, child, lhc);
1741 GOTO(out_child, rc);
1742 } else if (rc > 0) {
1743 mdt_lock_handle_init(lhc);
1744 mdt_lock_reg_init(lhc, LCK_PR);
1746 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1747 mdt_object_exists(child) && !mdt_object_remote(child)) {
1748 struct md_attr *ma = &info->mti_attr;
1751 ma->ma_need = MA_INODE;
1752 rc = mdt_attr_get_complex(info, child, ma);
1753 if (unlikely(rc != 0))
1754 GOTO(out_child, rc);
1756 /* If the file has not been changed for some time, we
1757 * return not only a LOOKUP lock, but also an UPDATE
1758 * lock and this might save us RPC on later STAT. For
1759 * directories, it also let negative dentry cache start
1760 * working for this dir. */
1761 if (ma->ma_valid & MA_INODE &&
1762 ma->ma_attr.la_valid & LA_CTIME &&
1763 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1764 ma->ma_attr.la_ctime < ktime_get_real_seconds())
1765 child_bits |= MDS_INODELOCK_UPDATE;
1768 /* layout lock must be granted in a best-effort way
1769 * for IT operations */
1770 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1771 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
1772 !mdt_object_remote(child) && ldlm_rep != NULL) {
1773 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1774 exp_connect_layout(info->mti_exp)) {
1775 /* try to grant layout lock for regular file. */
1776 try_bits = MDS_INODELOCK_LAYOUT;
1778 /* Acquire DOM lock in advance for data-on-mdt file */
1779 if (child != parent)
1780 try_bits |= MDS_INODELOCK_DOM;
1783 if (try_bits != 0) {
1784 /* try layout lock, it may fail to be granted due to
1785 * contention at LOOKUP or UPDATE */
1786 rc = mdt_object_lock_try(info, child, lhc, &child_bits,
1788 if (child_bits & MDS_INODELOCK_LAYOUT)
1791 /* Do not enqueue the UPDATE lock from MDT(cross-MDT),
1792 * client will enqueue the lock to the remote MDT */
1793 if (mdt_object_remote(child))
1794 child_bits &= ~MDS_INODELOCK_UPDATE;
1795 rc = mdt_object_lock(info, child, lhc, child_bits);
1797 if (unlikely(rc != 0))
1798 GOTO(out_child, rc);
1801 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1803 /* finally, we can get attr for child. */
1804 rc = mdt_getattr_internal(info, child, ma_need);
1805 if (unlikely(rc != 0)) {
1806 mdt_object_unlock(info, child, lhc, 1);
1808 /* Debugging code. */
1809 LDLM_DEBUG(lock, "Returning lock to client");
1810 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1811 &lock->l_resource->lr_name),
1812 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1813 PLDLMRES(lock->l_resource),
1814 PFID(mdt_object_fid(child)));
1816 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
1817 mdt_object_exists(child) && !mdt_object_remote(child) &&
1819 LDLM_LOCK_PUT(lock);
1820 mdt_object_put(info->mti_env, child);
1821 /* NB: call the mdt_pack_size2body always after
1822 * mdt_object_put(), that is why this speacial
1823 * exit path is used. */
1824 rc = mdt_pack_size2body(info, child_fid,
1825 child_bits & MDS_INODELOCK_DOM);
1826 if (rc != 0 && child_bits & MDS_INODELOCK_DOM) {
1827 /* DOM lock was taken in advance but this is
1828 * not DoM file. Drop the lock. */
1829 lock_res_and_lock(lock);
1830 ldlm_inodebits_drop(lock, MDS_INODELOCK_DOM);
1831 unlock_res_and_lock(lock);
1834 GOTO(out_parent, rc = 0);
1838 LDLM_LOCK_PUT(lock);
1842 mdt_object_put(info->mti_env, child);
1845 mdt_object_unlock(info, parent, lhp, 1);
1849 /* normal handler: should release the child lock */
1850 static int mdt_getattr_name(struct tgt_session_info *tsi)
1852 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1853 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1854 struct mdt_body *reqbody;
1855 struct mdt_body *repbody;
1859 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1860 LASSERT(reqbody != NULL);
1861 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1862 LASSERT(repbody != NULL);
1864 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1865 repbody->mbo_eadatasize = 0;
1866 repbody->mbo_aclsize = 0;
1868 rc = mdt_init_ucred_intent_getattr(info, reqbody);
1870 GOTO(out_shrink, rc);
1872 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1873 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1874 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1875 lhc->mlh_reg_lh.cookie = 0;
1877 mdt_exit_ucred(info);
1880 mdt_client_compatibility(info);
1881 rc2 = mdt_fix_reply(info);
1884 mdt_thread_info_fini(info);
1888 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1889 void *karg, void __user *uarg);
1891 static int mdt_set_info(struct tgt_session_info *tsi)
1893 struct ptlrpc_request *req = tgt_ses_req(tsi);
1896 int keylen, vallen, rc = 0;
1900 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
1902 DEBUG_REQ(D_HA, req, "no set_info key");
1903 RETURN(err_serious(-EFAULT));
1906 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
1909 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
1911 DEBUG_REQ(D_HA, req, "no set_info val");
1912 RETURN(err_serious(-EFAULT));
1915 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
1918 /* Swab any part of val you need to here */
1919 if (KEY_IS(KEY_READ_ONLY)) {
1920 spin_lock(&req->rq_export->exp_lock);
1922 *exp_connect_flags_ptr(req->rq_export) |=
1925 *exp_connect_flags_ptr(req->rq_export) &=
1926 ~OBD_CONNECT_RDONLY;
1927 spin_unlock(&req->rq_export->exp_lock);
1928 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1929 struct changelog_setinfo *cs = val;
1931 if (vallen != sizeof(*cs)) {
1932 CERROR("%s: bad changelog_clear setinfo size %d\n",
1933 tgt_name(tsi->tsi_tgt), vallen);
1936 if (ptlrpc_req_need_swab(req)) {
1937 __swab64s(&cs->cs_recno);
1938 __swab32s(&cs->cs_id);
1941 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
1943 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
1945 obd_export_evict_by_nid(req->rq_export->exp_obd, val);
1952 static int mdt_readpage(struct tgt_session_info *tsi)
1954 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
1955 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
1956 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1957 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
1958 struct mdt_body *repbody;
1964 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1965 RETURN(err_serious(-ENOMEM));
1967 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
1968 if (repbody == NULL || reqbody == NULL)
1969 RETURN(err_serious(-EFAULT));
1972 * prepare @rdpg before calling lower layers and transfer itself. Here
1973 * reqbody->size contains offset of where to start to read and
1974 * reqbody->nlink contains number bytes to read.
1976 rdpg->rp_hash = reqbody->mbo_size;
1977 if (rdpg->rp_hash != reqbody->mbo_size) {
1978 CERROR("Invalid hash: %#llx != %#llx\n",
1979 rdpg->rp_hash, reqbody->mbo_size);
1983 rdpg->rp_attrs = reqbody->mbo_mode;
1984 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
1985 rdpg->rp_attrs |= LUDA_64BITHASH;
1986 rdpg->rp_count = min_t(unsigned int, reqbody->mbo_nlink,
1987 exp_max_brw_size(tsi->tsi_exp));
1988 rdpg->rp_npages = (rdpg->rp_count + PAGE_SIZE - 1) >>
1990 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1991 if (rdpg->rp_pages == NULL)
1994 for (i = 0; i < rdpg->rp_npages; ++i) {
1995 rdpg->rp_pages[i] = alloc_page(GFP_NOFS);
1996 if (rdpg->rp_pages[i] == NULL)
1997 GOTO(free_rdpg, rc = -ENOMEM);
2000 /* call lower layers to fill allocated pages with directory data */
2001 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
2003 GOTO(free_rdpg, rc);
2005 /* send pages to client */
2006 rc = tgt_sendpage(tsi, rdpg, rc);
2011 for (i = 0; i < rdpg->rp_npages; i++)
2012 if (rdpg->rp_pages[i] != NULL)
2013 __free_page(rdpg->rp_pages[i]);
2014 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
2016 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
2022 static int mdt_fix_attr_ucred(struct mdt_thread_info *info, __u32 op)
2024 struct lu_ucred *uc = mdt_ucred_check(info);
2025 struct lu_attr *attr = &info->mti_attr.ma_attr;
2030 if (op != REINT_SETATTR) {
2031 if ((attr->la_valid & LA_UID) && (attr->la_uid != -1))
2032 attr->la_uid = uc->uc_fsuid;
2033 /* for S_ISGID, inherit gid from his parent, such work will be
2034 * done in cmm/mdd layer, here set all cases as uc->uc_fsgid. */
2035 if ((attr->la_valid & LA_GID) && (attr->la_gid != -1))
2036 attr->la_gid = uc->uc_fsgid;
2042 static int mdt_reint_internal(struct mdt_thread_info *info,
2043 struct mdt_lock_handle *lhc,
2046 struct req_capsule *pill = info->mti_pill;
2047 struct mdt_body *repbody;
2052 rc = mdt_reint_unpack(info, op);
2054 CERROR("Can't unpack reint, rc %d\n", rc);
2055 RETURN(err_serious(rc));
2058 /* for replay (no_create) lmm is not needed, client has it already */
2059 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2060 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2063 /* llog cookies are always 0, the field is kept for compatibility */
2064 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2065 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
2067 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
2068 * by default. If the target object has more ACL entries, then
2069 * enlarge the buffer when necessary. */
2070 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
2071 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
2072 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
2074 rc = req_capsule_server_pack(pill);
2076 CERROR("Can't pack response, rc %d\n", rc);
2077 RETURN(err_serious(rc));
2080 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
2081 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
2083 repbody->mbo_eadatasize = 0;
2084 repbody->mbo_aclsize = 0;
2087 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
2089 /* for replay no cookkie / lmm need, because client have this already */
2090 if (info->mti_spec.no_create)
2091 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2092 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
2094 rc = mdt_init_ucred_reint(info);
2096 GOTO(out_shrink, rc);
2098 rc = mdt_fix_attr_ucred(info, op);
2100 GOTO(out_ucred, rc = err_serious(rc));
2102 rc = mdt_check_resent(info, mdt_reconstruct, lhc);
2104 GOTO(out_ucred, rc);
2105 } else if (rc == 1) {
2106 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
2107 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
2108 GOTO(out_ucred, rc);
2110 rc = mdt_reint_rec(info, lhc);
2113 mdt_exit_ucred(info);
2115 mdt_client_compatibility(info);
2116 rc2 = mdt_fix_reply(info);
2122 static long mdt_reint_opcode(struct ptlrpc_request *req,
2123 const struct req_format **fmt)
2125 struct mdt_device *mdt;
2126 struct mdt_rec_reint *rec;
2129 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
2131 opc = rec->rr_opcode;
2132 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
2133 if (opc < REINT_MAX && fmt[opc] != NULL)
2134 req_capsule_extend(&req->rq_pill, fmt[opc]);
2136 mdt = mdt_exp2dev(req->rq_export);
2137 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
2138 " rc = %d\n", req->rq_export->exp_obd->obd_name,
2139 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
2140 opc = err_serious(-EFAULT);
2143 opc = err_serious(-EFAULT);
2148 static int mdt_reint(struct tgt_session_info *tsi)
2152 static const struct req_format *reint_fmts[REINT_MAX] = {
2153 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
2154 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
2155 [REINT_LINK] = &RQF_MDS_REINT_LINK,
2156 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
2157 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
2158 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
2159 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
2160 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
2161 [REINT_MIGRATE] = &RQF_MDS_REINT_RENAME,
2162 [REINT_RESYNC] = &RQF_MDS_REINT_RESYNC,
2167 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
2169 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2171 * No lock possible here from client to pass it to reint code
2174 rc = mdt_reint_internal(info, NULL, opc);
2175 mdt_thread_info_fini(info);
2180 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
2184 /* this should sync the whole device */
2185 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
2187 struct dt_device *dt = mdt->mdt_bottom;
2191 rc = dt->dd_ops->dt_sync(env, dt);
2195 /* this should sync this object */
2196 static int mdt_object_sync(const struct lu_env *env, struct obd_export *exp,
2197 struct mdt_object *mo)
2203 if (!mdt_object_exists(mo)) {
2204 CWARN("%s: non existing object "DFID": rc = %d\n",
2205 exp->exp_obd->obd_name, PFID(mdt_object_fid(mo)),
2210 rc = mo_object_sync(env, mdt_object_child(mo));
2215 static int mdt_sync(struct tgt_session_info *tsi)
2217 struct ptlrpc_request *req = tgt_ses_req(tsi);
2218 struct req_capsule *pill = tsi->tsi_pill;
2219 struct mdt_body *body;
2224 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
2225 RETURN(err_serious(-ENOMEM));
2227 if (fid_seq(&tsi->tsi_mdt_body->mbo_fid1) == 0) {
2228 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
2230 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2232 /* sync an object */
2233 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp,
2236 const struct lu_fid *fid;
2237 struct lu_attr *la = &info->mti_attr.ma_attr;
2239 info->mti_attr.ma_need = MA_INODE;
2240 info->mti_attr.ma_valid = 0;
2241 rc = mdt_attr_get_complex(info, info->mti_object,
2244 body = req_capsule_server_get(pill,
2246 fid = mdt_object_fid(info->mti_object);
2247 mdt_pack_attr2body(info, body, la, fid);
2250 mdt_thread_info_fini(info);
2253 mdt_counter_incr(req, LPROC_MDT_SYNC);
2258 static int mdt_data_sync(struct tgt_session_info *tsi)
2260 struct mdt_thread_info *info;
2261 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2262 struct ost_body *body = tsi->tsi_ost_body;
2263 struct ost_body *repbody;
2264 struct mdt_object *mo = NULL;
2270 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
2272 /* if no fid is specified then do nothing,
2273 * device sync is done via MDS_SYNC */
2274 if (fid_is_zero(&tsi->tsi_fid))
2277 mo = mdt_object_find(tsi->tsi_env, mdt, &tsi->tsi_fid);
2279 RETURN(PTR_ERR(mo));
2281 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp, mo);
2285 repbody->oa.o_oi = body->oa.o_oi;
2286 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
2288 info = tsi2mdt_info(tsi);
2289 ma = &info->mti_attr;
2290 ma->ma_need = MA_INODE;
2292 rc = mdt_attr_get_complex(info, mo, ma);
2294 obdo_from_la(&repbody->oa, &ma->ma_attr, VALID_FLAGS);
2297 mdt_thread_info_fini(info);
2302 mdt_object_put(tsi->tsi_env, mo);
2307 * Handle quota control requests to consult current usage/limit, but also
2308 * to configure quota enforcement
2310 static int mdt_quotactl(struct tgt_session_info *tsi)
2312 struct obd_export *exp = tsi->tsi_exp;
2313 struct req_capsule *pill = tsi->tsi_pill;
2314 struct obd_quotactl *oqctl, *repoqc;
2316 struct mdt_device *mdt = mdt_exp2dev(exp);
2317 struct lu_device *qmt = mdt->mdt_qmt_dev;
2318 struct lu_nodemap *nodemap;
2321 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
2323 RETURN(err_serious(-EPROTO));
2325 rc = req_capsule_server_pack(pill);
2327 RETURN(err_serious(rc));
2329 nodemap = nodemap_get_from_exp(exp);
2330 if (IS_ERR(nodemap))
2331 RETURN(PTR_ERR(nodemap));
2333 switch (oqctl->qc_cmd) {
2334 /* master quotactl */
2337 if (!nodemap_can_setquota(nodemap))
2338 GOTO(out_nodemap, rc = -EPERM);
2342 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2343 /* slave quotactl */
2348 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2349 GOTO(out_nodemap, rc = -EFAULT);
2353 switch (oqctl->qc_type) {
2355 id = nodemap_map_id(nodemap, NODEMAP_UID,
2356 NODEMAP_CLIENT_TO_FS, id);
2359 id = nodemap_map_id(nodemap, NODEMAP_GID,
2360 NODEMAP_CLIENT_TO_FS, id);
2363 /* todo: check/map project id */
2367 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2369 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
2371 GOTO(out_nodemap, rc = err_serious(-EFAULT));
2373 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA)
2374 barrier_exit(tsi->tsi_tgt->lut_bottom);
2376 if (oqctl->qc_id != id)
2377 swap(oqctl->qc_id, id);
2379 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA) {
2380 if (unlikely(!barrier_entry(tsi->tsi_tgt->lut_bottom)))
2381 RETURN(-EINPROGRESS);
2384 switch (oqctl->qc_cmd) {
2390 /* forward quotactl request to QMT */
2391 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
2396 /* slave quotactl */
2397 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
2402 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2403 GOTO(out_nodemap, rc = -EFAULT);
2406 if (oqctl->qc_id != id)
2407 swap(oqctl->qc_id, id);
2414 nodemap_putref(nodemap);
2419 /** clone llog ctxt from child (mdd)
2420 * This allows remote llog (replicator) access.
2421 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2422 * context was originally set up, or we can handle them directly.
2423 * I choose the latter, but that means I need any llog
2424 * contexts set up by child to be accessable by the mdt. So we clone the
2425 * context into our context list here.
2427 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2430 struct md_device *next = mdt->mdt_child;
2431 struct llog_ctxt *ctxt;
2434 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2437 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2438 if (rc || ctxt == NULL) {
2442 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2444 CERROR("Can't set mdt ctxt %d\n", rc);
2449 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2450 struct mdt_device *mdt, int idx)
2452 struct llog_ctxt *ctxt;
2454 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2457 /* Put once for the get we just did, and once for the clone */
2458 llog_ctxt_put(ctxt);
2459 llog_ctxt_put(ctxt);
2464 * sec context handlers
2466 static int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
2468 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2474 * quota request handlers
2476 static int mdt_quota_dqacq(struct tgt_session_info *tsi)
2478 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2479 struct lu_device *qmt = mdt->mdt_qmt_dev;
2484 RETURN(err_serious(-EOPNOTSUPP));
2486 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
2490 struct mdt_object *mdt_object_new(const struct lu_env *env,
2491 struct mdt_device *d,
2492 const struct lu_fid *f)
2494 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2495 struct lu_object *o;
2496 struct mdt_object *m;
2499 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2500 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
2501 if (unlikely(IS_ERR(o)))
2502 m = (struct mdt_object *)o;
2508 struct mdt_object *mdt_object_find(const struct lu_env *env,
2509 struct mdt_device *d,
2510 const struct lu_fid *f)
2512 struct lu_object *o;
2513 struct mdt_object *m;
2516 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2517 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
2518 if (unlikely(IS_ERR(o)))
2519 m = (struct mdt_object *)o;
2527 * Asyncronous commit for mdt device.
2529 * Pass asynchonous commit call down the MDS stack.
2531 * \param env environment
2532 * \param mdt the mdt device
2534 static void mdt_device_commit_async(const struct lu_env *env,
2535 struct mdt_device *mdt)
2537 struct dt_device *dt = mdt->mdt_bottom;
2541 rc = dt->dd_ops->dt_commit_async(env, dt);
2542 if (unlikely(rc != 0))
2543 CWARN("%s: async commit start failed: rc = %d\n",
2544 mdt_obd_name(mdt), rc);
2545 atomic_inc(&mdt->mdt_async_commit_count);
2550 * Mark the lock as "synchonous".
2552 * Mark the lock to deffer transaction commit to the unlock time.
2554 * \param lock the lock to mark as "synchonous"
2556 * \see mdt_is_lock_sync
2557 * \see mdt_save_lock
2559 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2561 lock->l_ast_data = (void*)1;
2565 * Check whehter the lock "synchonous" or not.
2567 * \param lock the lock to check
2568 * \retval 1 the lock is "synchonous"
2569 * \retval 0 the lock isn't "synchronous"
2571 * \see mdt_set_lock_sync
2572 * \see mdt_save_lock
2574 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2576 return lock->l_ast_data != NULL;
2580 * Blocking AST for mdt locks.
2582 * Starts transaction commit if in case of COS lock conflict or
2583 * deffers such a commit to the mdt_save_lock.
2585 * \param lock the lock which blocks a request or cancelling lock
2586 * \param desc unused
2587 * \param data unused
2588 * \param flag indicates whether this cancelling or blocking callback
2590 * \see ldlm_blocking_ast_nocheck
2592 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2593 void *data, int flag)
2595 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2596 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2597 bool commit_async = false;
2601 if (flag == LDLM_CB_CANCELING)
2604 lock_res_and_lock(lock);
2605 if (lock->l_blocking_ast != mdt_blocking_ast) {
2606 unlock_res_and_lock(lock);
2609 /* There is no lock conflict if l_blocking_lock == NULL,
2610 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2611 * when the last reference to a local lock was released */
2612 if (lock->l_req_mode & (LCK_PW | LCK_EX) &&
2613 lock->l_blocking_lock != NULL) {
2614 if (mdt_cos_is_enabled(mdt)) {
2615 if (lock->l_client_cookie !=
2616 lock->l_blocking_lock->l_client_cookie)
2617 mdt_set_lock_sync(lock);
2618 } else if (mdt_slc_is_enabled(mdt) &&
2619 ldlm_is_cos_incompat(lock->l_blocking_lock)) {
2620 mdt_set_lock_sync(lock);
2622 * we may do extra commit here, but there is a small
2623 * window to miss a commit: lock was unlocked (saved),
2624 * then a conflict lock queued and we come here, but
2625 * REP-ACK not received, so lock was not converted to
2627 * Fortunately this window is quite small, so the
2628 * extra commit should be rare (not to say distributed
2629 * operation is rare too).
2631 commit_async = true;
2633 } else if (lock->l_req_mode == LCK_COS &&
2634 lock->l_blocking_lock != NULL) {
2635 commit_async = true;
2638 rc = ldlm_blocking_ast_nocheck(lock);
2643 rc = lu_env_init(&env, LCT_LOCAL);
2644 if (unlikely(rc != 0))
2645 CWARN("%s: lu_env initialization failed, cannot "
2646 "start asynchronous commit: rc = %d\n",
2649 mdt_device_commit_async(&env, mdt);
2656 * Blocking AST for cross-MDT lock
2658 * Discard lock from uncommitted_slc_locks and cancel it.
2660 * \param lock the lock which blocks a request or cancelling lock
2661 * \param desc unused
2662 * \param data unused
2663 * \param flag indicates whether this cancelling or blocking callback
2664 * \retval 0 on success
2665 * \retval negative number on error
2667 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2668 void *data, int flag)
2674 case LDLM_CB_BLOCKING: {
2675 struct lustre_handle lockh;
2677 ldlm_lock2handle(lock, &lockh);
2678 rc = ldlm_cli_cancel(&lockh,
2679 ldlm_is_atomic_cb(lock) ? 0 : LCF_ASYNC);
2681 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2686 case LDLM_CB_CANCELING: {
2687 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2688 struct mdt_device *mdt =
2689 mdt_dev(obd->obd_lu_dev->ld_site->ls_top_dev);
2691 LDLM_DEBUG(lock, "Revoke remote lock\n");
2693 /* discard slc lock here so that it can be cleaned anytime,
2694 * especially for cleanup_resource() */
2695 tgt_discard_slc_lock(&mdt->mdt_lut, lock);
2697 /* once we cache lock, l_ast_data is set to mdt_object */
2698 if (lock->l_ast_data != NULL) {
2699 struct mdt_object *mo = lock->l_ast_data;
2702 rc = lu_env_init(&env, LCT_MD_THREAD);
2703 if (unlikely(rc != 0)) {
2704 CWARN("%s: lu_env initialization failed, object"
2705 "%p "DFID" is leaked!\n",
2707 PFID(mdt_object_fid(mo)));
2711 if (lock->l_policy_data.l_inodebits.bits &
2712 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)) {
2713 rc = mo_invalidate(&env, mdt_object_child(mo));
2714 mo->mot_cache_attr = 0;
2716 mdt_object_put(&env, mo);
2728 int mdt_check_resent_lock(struct mdt_thread_info *info,
2729 struct mdt_object *mo,
2730 struct mdt_lock_handle *lhc)
2732 /* the lock might already be gotten in ldlm_handle_enqueue() */
2733 if (unlikely(lustre_handle_is_used(&lhc->mlh_reg_lh))) {
2734 struct ptlrpc_request *req = mdt_info_req(info);
2735 struct ldlm_lock *lock;
2737 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
2738 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
2740 /* Lock is pinned by ldlm_handle_enqueue0() as it is
2741 * a resend case, however, it could be already destroyed
2742 * due to client eviction or a raced cancel RPC. */
2743 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx",
2744 lhc->mlh_reg_lh.cookie);
2748 if (!fid_res_name_eq(mdt_object_fid(mo),
2749 &lock->l_resource->lr_name)) {
2750 CWARN("%s: Although resent, but still not "
2751 "get child lock:"DFID"\n",
2752 info->mti_exp->exp_obd->obd_name,
2753 PFID(mdt_object_fid(mo)));
2754 LDLM_LOCK_PUT(lock);
2757 LDLM_LOCK_PUT(lock);
2763 int mdt_remote_object_lock_try(struct mdt_thread_info *mti,
2764 struct mdt_object *o, const struct lu_fid *fid,
2765 struct lustre_handle *lh, enum ldlm_mode mode,
2766 __u64 *ibits, __u64 trybits, bool cache)
2768 struct ldlm_enqueue_info *einfo = &mti->mti_remote_einfo;
2769 union ldlm_policy_data *policy = &mti->mti_policy;
2770 struct ldlm_res_id *res_id = &mti->mti_res_id;
2774 LASSERT(mdt_object_remote(o));
2776 fid_build_reg_res_name(fid, res_id);
2778 memset(einfo, 0, sizeof(*einfo));
2779 einfo->ei_type = LDLM_IBITS;
2780 einfo->ei_mode = mode;
2781 einfo->ei_cb_bl = mdt_remote_blocking_ast;
2782 einfo->ei_cb_cp = ldlm_completion_ast;
2783 einfo->ei_enq_slave = 0;
2784 einfo->ei_res_id = res_id;
2788 * if we cache lock, couple lock with mdt_object, so that object
2789 * can be easily found in lock ASTs.
2791 mdt_object_get(mti->mti_env, o);
2792 einfo->ei_cbdata = o;
2795 memset(policy, 0, sizeof(*policy));
2796 policy->l_inodebits.bits = *ibits;
2797 policy->l_inodebits.try_bits = trybits;
2799 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
2801 if (rc < 0 && cache)
2802 mdt_object_put(mti->mti_env, o);
2804 /* Return successfully acquired bits to a caller */
2806 struct ldlm_lock *lock = ldlm_handle2lock(lh);
2809 *ibits = lock->l_policy_data.l_inodebits.bits;
2810 LDLM_LOCK_PUT(lock);
2815 int mdt_remote_object_lock(struct mdt_thread_info *mti, struct mdt_object *o,
2816 const struct lu_fid *fid, struct lustre_handle *lh,
2817 enum ldlm_mode mode, __u64 ibits, bool cache)
2819 return mdt_remote_object_lock_try(mti, o, fid, lh, mode, &ibits, 0,
2823 static int mdt_object_local_lock(struct mdt_thread_info *info,
2824 struct mdt_object *o,
2825 struct mdt_lock_handle *lh, __u64 *ibits,
2826 __u64 trybits, bool cos_incompat)
2828 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2829 union ldlm_policy_data *policy = &info->mti_policy;
2830 struct ldlm_res_id *res_id = &info->mti_res_id;
2835 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2836 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2837 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2838 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2841 LASSERT(lh->mlh_reg_mode == LCK_PW ||
2842 lh->mlh_reg_mode == LCK_EX);
2843 dlmflags |= LDLM_FL_COS_INCOMPAT;
2844 } else if (mdt_cos_is_enabled(info->mti_mdt)) {
2845 dlmflags |= LDLM_FL_COS_ENABLED;
2848 /* Only enqueue LOOKUP lock for remote object */
2849 LASSERT(ergo(mdt_object_remote(o), *ibits == MDS_INODELOCK_LOOKUP));
2851 if (lh->mlh_type == MDT_PDO_LOCK) {
2852 /* check for exists after object is locked */
2853 if (mdt_object_exists(o) == 0) {
2854 /* Non-existent object shouldn't have PDO lock */
2857 /* Non-dir object shouldn't have PDO lock */
2858 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
2864 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2865 dlmflags |= LDLM_FL_ATOMIC_CB;
2868 * Take PDO lock on whole directory and build correct @res_id for lock
2869 * on part of directory.
2871 if (lh->mlh_pdo_hash != 0) {
2872 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2873 mdt_lock_pdo_mode(info, o, lh);
2874 if (lh->mlh_pdo_mode != LCK_NL) {
2876 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2877 * is never going to be sent to client and we do not
2878 * want it slowed down due to possible cancels.
2880 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2881 policy->l_inodebits.try_bits = 0;
2882 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2883 policy, res_id, dlmflags,
2884 info->mti_exp == NULL ? NULL :
2885 &info->mti_exp->exp_handle.h_cookie);
2886 if (unlikely(rc != 0))
2887 GOTO(out_unlock, rc);
2891 * Finish res_id initializing by name hash marking part of
2892 * directory which is taking modification.
2894 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2897 policy->l_inodebits.bits = *ibits;
2898 policy->l_inodebits.try_bits = trybits;
2901 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2902 * going to be sent to client. If it is - mdt_intent_policy() path will
2903 * fix it up and turn FL_LOCAL flag off.
2905 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2906 res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
2907 info->mti_exp == NULL ? NULL :
2908 &info->mti_exp->exp_handle.h_cookie);
2911 mdt_object_unlock(info, o, lh, 1);
2912 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2913 lh->mlh_pdo_hash != 0 &&
2914 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
2915 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2917 /* Return successfully acquired bits to a caller */
2919 struct ldlm_lock *lock = ldlm_handle2lock(&lh->mlh_reg_lh);
2922 *ibits = lock->l_policy_data.l_inodebits.bits;
2923 LDLM_LOCK_PUT(lock);
2929 mdt_object_lock_internal(struct mdt_thread_info *info, struct mdt_object *o,
2930 struct mdt_lock_handle *lh, __u64 *ibits,
2931 __u64 trybits, bool cos_incompat)
2933 struct mdt_lock_handle *local_lh = NULL;
2937 if (!mdt_object_remote(o)) {
2938 rc = mdt_object_local_lock(info, o, lh, ibits, trybits,
2943 /* XXX do not support PERM/LAYOUT/XATTR lock for remote object yet */
2944 *ibits &= ~(MDS_INODELOCK_PERM | MDS_INODELOCK_LAYOUT |
2945 MDS_INODELOCK_XATTR);
2947 /* Only enqueue LOOKUP lock for remote object */
2948 if (*ibits & MDS_INODELOCK_LOOKUP) {
2949 __u64 local = MDS_INODELOCK_LOOKUP;
2951 rc = mdt_object_local_lock(info, o, lh, &local, 0,
2959 if ((*ibits | trybits) & MDS_INODELOCK_UPDATE) {
2960 /* Sigh, PDO needs to enqueue 2 locks right now, but
2961 * enqueue RPC can only request 1 lock, to avoid extra
2962 * RPC, so it will instead enqueue EX lock for remote
2963 * object anyway XXX*/
2964 if (lh->mlh_type == MDT_PDO_LOCK &&
2965 lh->mlh_pdo_hash != 0) {
2966 CDEBUG(D_INFO, "%s: "DFID" convert PDO lock to"
2967 "EX lock.\n", mdt_obd_name(info->mti_mdt),
2968 PFID(mdt_object_fid(o)));
2969 lh->mlh_pdo_hash = 0;
2970 lh->mlh_rreg_mode = LCK_EX;
2971 lh->mlh_type = MDT_REG_LOCK;
2974 rc = mdt_remote_object_lock_try(info, o, mdt_object_fid(o),
2977 ibits, trybits, false);
2978 if (rc != ELDLM_OK) {
2979 if (local_lh != NULL)
2980 mdt_object_unlock(info, o, local_lh, rc);
2988 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2989 struct mdt_lock_handle *lh, __u64 ibits)
2991 return mdt_object_lock_internal(info, o, lh, &ibits, 0, false);
2994 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2995 struct mdt_lock_handle *lh, __u64 ibits,
2998 LASSERT(lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX);
2999 return mdt_object_lock_internal(info, o, lh, &ibits, 0,
3003 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
3004 struct mdt_lock_handle *lh, __u64 *ibits,
3005 __u64 trybits, bool cos_incompat)
3007 bool trylock_only = *ibits == 0;
3010 LASSERT(!(*ibits & trybits));
3011 rc = mdt_object_lock_internal(info, o, lh, ibits, trybits,
3013 if (rc && trylock_only) { /* clear error for try ibits lock only */
3014 LASSERT(*ibits == 0);
3021 * Save a lock within request object.
3023 * Keep the lock referenced until whether client ACK or transaction
3024 * commit happens or release the lock immediately depending on input
3025 * parameters. If COS is ON, a write lock is converted to COS lock
3028 * \param info thead info object
3029 * \param h lock handle
3030 * \param mode lock mode
3031 * \param decref force immediate lock releasing
3033 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
3034 enum ldlm_mode mode, int decref)
3038 if (lustre_handle_is_used(h)) {
3039 if (decref || !info->mti_has_trans ||
3040 !(mode & (LCK_PW | LCK_EX))) {
3041 mdt_fid_unlock(h, mode);
3043 struct mdt_device *mdt = info->mti_mdt;
3044 struct ldlm_lock *lock = ldlm_handle2lock(h);
3045 struct ptlrpc_request *req = mdt_info_req(info);
3046 bool cos = mdt_cos_is_enabled(mdt);
3047 bool convert_lock = !cos && mdt_slc_is_enabled(mdt);
3049 LASSERTF(lock != NULL, "no lock for cookie %#llx\n",
3052 /* there is no request if mdt_object_unlock() is called
3053 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
3054 if (likely(req != NULL)) {
3055 LDLM_DEBUG(lock, "save lock request %p reply "
3056 "state %p transno %lld\n", req,
3057 req->rq_reply_state, req->rq_transno);
3059 ldlm_lock_mode_downgrade(lock, LCK_COS);
3062 if (req->rq_export->exp_disconnected)
3063 mdt_fid_unlock(h, mode);
3065 ptlrpc_save_lock(req, h, mode, cos,
3068 mdt_fid_unlock(h, mode);
3070 if (mdt_is_lock_sync(lock)) {
3071 CDEBUG(D_HA, "found sync-lock,"
3072 " async commit started\n");
3073 mdt_device_commit_async(info->mti_env,
3076 LDLM_LOCK_PUT(lock);
3085 * Save cross-MDT lock in uncommitted_slc_locks
3087 * Keep the lock referenced until transaction commit happens or release the lock
3088 * immediately depending on input parameters.
3090 * \param info thead info object
3091 * \param h lock handle
3092 * \param mode lock mode
3093 * \param decref force immediate lock releasing
3095 static void mdt_save_remote_lock(struct mdt_thread_info *info,
3096 struct mdt_object *o, struct lustre_handle *h,
3097 enum ldlm_mode mode, int decref)
3101 if (lustre_handle_is_used(h)) {
3102 struct ldlm_lock *lock = ldlm_handle2lock(h);
3105 (lock->l_policy_data.l_inodebits.bits &
3106 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)))
3107 mo_invalidate(info->mti_env, mdt_object_child(o));
3109 if (decref || !info->mti_has_trans ||
3110 !(mode & (LCK_PW | LCK_EX))) {
3111 ldlm_lock_decref_and_cancel(h, mode);
3112 LDLM_LOCK_PUT(lock);
3114 struct ptlrpc_request *req = mdt_info_req(info);
3116 LASSERT(req != NULL);
3117 tgt_save_slc_lock(&info->mti_mdt->mdt_lut, lock,
3119 ldlm_lock_decref(h, mode);
3128 * Unlock mdt object.
3130 * Immeditely release the regular lock and the PDO lock or save the
3131 * lock in request and keep them referenced until client ACK or
3132 * transaction commit.
3134 * \param info thread info object
3135 * \param o mdt object
3136 * \param lh mdt lock handle referencing regular and PDO locks
3137 * \param decref force immediate lock releasing
3139 * XXX o is not used and may be NULL, see hsm_cdt_request_completed().
3141 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
3142 struct mdt_lock_handle *lh, int decref)
3146 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
3147 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
3148 mdt_save_remote_lock(info, o, &lh->mlh_rreg_lh, lh->mlh_rreg_mode,
3154 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
3155 const struct lu_fid *f,
3156 struct mdt_lock_handle *lh,
3159 struct mdt_object *o;
3161 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
3165 rc = mdt_object_lock(info, o, lh, ibits);
3167 mdt_object_put(info->mti_env, o);
3174 void mdt_object_unlock_put(struct mdt_thread_info * info,
3175 struct mdt_object * o,
3176 struct mdt_lock_handle *lh,
3179 mdt_object_unlock(info, o, lh, decref);
3180 mdt_object_put(info->mti_env, o);
3184 * Generic code handling requests that have struct mdt_body passed in:
3186 * - extract mdt_body from request and save it in @info, if present;
3188 * - create lu_object, corresponding to the fid in mdt_body, and save it in
3191 * - if HABEO_CORPUS flag is set for this request type check whether object
3192 * actually exists on storage (lu_object_exists()).
3195 static int mdt_body_unpack(struct mdt_thread_info *info,
3196 enum tgt_handler_flags flags)
3198 const struct mdt_body *body;
3199 struct mdt_object *obj;
3200 const struct lu_env *env;
3201 struct req_capsule *pill;
3205 env = info->mti_env;
3206 pill = info->mti_pill;
3208 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
3212 if (!(body->mbo_valid & OBD_MD_FLID))
3215 if (!fid_is_sane(&body->mbo_fid1)) {
3216 CERROR("Invalid fid: "DFID"\n", PFID(&body->mbo_fid1));
3220 obj = mdt_object_find(env, info->mti_mdt, &body->mbo_fid1);
3222 if ((flags & HABEO_CORPUS) && !mdt_object_exists(obj)) {
3223 mdt_object_put(env, obj);
3226 info->mti_object = obj;
3235 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info,
3236 enum tgt_handler_flags flags)
3238 struct req_capsule *pill = info->mti_pill;
3242 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
3243 rc = mdt_body_unpack(info, flags);
3247 if (rc == 0 && (flags & HABEO_REFERO)) {
3249 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
3250 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
3252 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
3253 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
3256 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
3257 * by default. If the target object has more ACL entries, then
3258 * enlarge the buffer when necessary. */
3259 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
3260 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
3261 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
3263 rc = req_capsule_server_pack(pill);
3268 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
3270 lh->mlh_type = MDT_NUL_LOCK;
3271 lh->mlh_reg_lh.cookie = 0ull;
3272 lh->mlh_reg_mode = LCK_MINMODE;
3273 lh->mlh_pdo_lh.cookie = 0ull;
3274 lh->mlh_pdo_mode = LCK_MINMODE;
3275 lh->mlh_rreg_lh.cookie = 0ull;
3276 lh->mlh_rreg_mode = LCK_MINMODE;
3279 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
3281 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3282 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3286 * Initialize fields of struct mdt_thread_info. Other fields are left in
3287 * uninitialized state, because it's too expensive to zero out whole
3288 * mdt_thread_info (> 1K) on each request arrival.
3290 void mdt_thread_info_init(struct ptlrpc_request *req,
3291 struct mdt_thread_info *info)
3295 info->mti_pill = &req->rq_pill;
3298 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3299 mdt_lock_handle_init(&info->mti_lh[i]);
3301 /* mdt device: it can be NULL while CONNECT */
3302 if (req->rq_export) {
3303 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
3304 info->mti_exp = req->rq_export;
3306 info->mti_mdt = NULL;
3307 info->mti_env = req->rq_svc_thread->t_env;
3308 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
3310 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
3311 info->mti_big_buf = LU_BUF_NULL;
3312 info->mti_body = NULL;
3313 info->mti_object = NULL;
3314 info->mti_dlm_req = NULL;
3315 info->mti_has_trans = 0;
3316 info->mti_cross_ref = 0;
3317 info->mti_opdata = 0;
3318 info->mti_big_lmm_used = 0;
3319 info->mti_big_acl_used = 0;
3320 info->mti_som_valid = 0;
3322 info->mti_spec.no_create = 0;
3323 info->mti_spec.sp_rm_entry = 0;
3324 info->mti_spec.sp_permitted = 0;
3325 info->mti_spec.sp_migrate_close = 0;
3327 info->mti_spec.u.sp_ea.eadata = NULL;
3328 info->mti_spec.u.sp_ea.eadatalen = 0;
3331 void mdt_thread_info_fini(struct mdt_thread_info *info)
3335 if (info->mti_object != NULL) {
3336 mdt_object_put(info->mti_env, info->mti_object);
3337 info->mti_object = NULL;
3340 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3341 mdt_lock_handle_fini(&info->mti_lh[i]);
3342 info->mti_env = NULL;
3343 info->mti_pill = NULL;
3344 info->mti_exp = NULL;
3346 if (unlikely(info->mti_big_buf.lb_buf != NULL))
3347 lu_buf_free(&info->mti_big_buf);
3350 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
3352 struct mdt_thread_info *mti;
3354 mti = mdt_th_info(tsi->tsi_env);
3355 LASSERT(mti != NULL);
3357 mdt_thread_info_init(tgt_ses_req(tsi), mti);
3358 if (tsi->tsi_corpus != NULL) {
3359 mti->mti_object = mdt_obj(tsi->tsi_corpus);
3360 lu_object_get(tsi->tsi_corpus);
3362 mti->mti_body = tsi->tsi_mdt_body;
3363 mti->mti_dlm_req = tsi->tsi_dlm_req;
3368 static int mdt_tgt_connect(struct tgt_session_info *tsi)
3370 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_DELAY_CONDITIONAL) &&
3372 tsi2mdt_info(tsi)->mti_mdt->mdt_seq_site.ss_node_id) {
3373 set_current_state(TASK_UNINTERRUPTIBLE);
3374 schedule_timeout(msecs_to_jiffies(3 * MSEC_PER_SEC));
3377 return tgt_connect(tsi);
3391 static int mdt_intent_glimpse(enum mdt_it_code opcode,
3392 struct mdt_thread_info *info,
3393 struct ldlm_lock **lockp, __u64 flags)
3395 return mdt_glimpse_enqueue(info, info->mti_mdt->mdt_namespace,
3398 static int mdt_intent_brw(enum mdt_it_code opcode,
3399 struct mdt_thread_info *info,
3400 struct ldlm_lock **lockp, __u64 flags)
3402 return mdt_brw_enqueue(info, info->mti_mdt->mdt_namespace,
3406 int mdt_intent_lock_replace(struct mdt_thread_info *info,
3407 struct ldlm_lock **lockp,
3408 struct mdt_lock_handle *lh,
3409 __u64 flags, int result)
3411 struct ptlrpc_request *req = mdt_info_req(info);
3412 struct ldlm_lock *lock = *lockp;
3413 struct ldlm_lock *new_lock;
3415 /* If possible resent found a lock, @lh is set to its handle */
3416 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3418 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3419 lh->mlh_reg_lh.cookie = 0;
3423 if (new_lock == NULL && (flags & LDLM_FL_RESENT)) {
3424 /* Lock is pinned by ldlm_handle_enqueue0() as it is
3425 * a resend case, however, it could be already destroyed
3426 * due to client eviction or a raced cancel RPC. */
3427 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx\n",
3428 lh->mlh_reg_lh.cookie);
3429 lh->mlh_reg_lh.cookie = 0;
3433 LASSERTF(new_lock != NULL,
3434 "lockh %#llx flags %#llx : rc = %d\n",
3435 lh->mlh_reg_lh.cookie, flags, result);
3438 * If we've already given this lock to a client once, then we should
3439 * have no readers or writers. Otherwise, we should have one reader
3440 * _or_ writer ref (which will be zeroed below) before returning the
3443 if (new_lock->l_export == req->rq_export) {
3444 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3446 LASSERT(new_lock->l_export == NULL);
3447 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3452 if (new_lock->l_export == req->rq_export) {
3454 * Already gave this to the client, which means that we
3455 * reconstructed a reply.
3457 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3460 LDLM_LOCK_RELEASE(new_lock);
3461 lh->mlh_reg_lh.cookie = 0;
3462 RETURN(ELDLM_LOCK_REPLACED);
3466 * Fixup the lock to be given to the client.
3468 lock_res_and_lock(new_lock);
3469 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3470 * possible blocking AST. */
3471 while (new_lock->l_readers > 0) {
3472 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3473 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3474 new_lock->l_readers--;
3476 while (new_lock->l_writers > 0) {
3477 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3478 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3479 new_lock->l_writers--;
3482 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3483 new_lock->l_blocking_ast = lock->l_blocking_ast;
3484 new_lock->l_completion_ast = lock->l_completion_ast;
3485 if (ldlm_has_dom(new_lock))
3486 new_lock->l_glimpse_ast = ldlm_server_glimpse_ast;
3487 new_lock->l_remote_handle = lock->l_remote_handle;
3488 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3490 unlock_res_and_lock(new_lock);
3492 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3493 &new_lock->l_remote_handle,
3494 &new_lock->l_exp_hash);
3496 LDLM_LOCK_RELEASE(new_lock);
3497 lh->mlh_reg_lh.cookie = 0;
3499 RETURN(ELDLM_LOCK_REPLACED);
3502 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3503 struct ldlm_lock *new_lock,
3504 struct mdt_lock_handle *lh, __u64 flags)
3506 struct ptlrpc_request *req = mdt_info_req(info);
3507 struct ldlm_request *dlmreq;
3509 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3512 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3514 /* Check if this is a resend case (MSG_RESENT is set on RPC) and a
3515 * lock was found by ldlm_handle_enqueue(); if so @lh must be
3517 if (flags & LDLM_FL_RESENT) {
3518 lh->mlh_reg_lh.cookie = new_lock->l_handle.h_cookie;
3519 lh->mlh_reg_mode = new_lock->l_granted_mode;
3521 LDLM_DEBUG(new_lock, "Restoring lock cookie");
3522 DEBUG_REQ(D_DLMTRACE, req, "restoring lock cookie %#llx",
3523 lh->mlh_reg_lh.cookie);
3528 * If the xid matches, then we know this is a resent request, and allow
3529 * it. (It's probably an OPEN, for which we don't send a lock.
3531 if (req_can_reconstruct(req, NULL))
3535 * This remote handle isn't enqueued, so we never received or processed
3536 * this request. Clear MSG_RESENT, because it can be handled like any
3537 * normal request now.
3539 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3541 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle %#llx",
3542 dlmreq->lock_handle[0].cookie);
3545 static int mdt_intent_getxattr(enum mdt_it_code opcode,
3546 struct mdt_thread_info *info,
3547 struct ldlm_lock **lockp,
3550 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3551 struct ldlm_reply *ldlm_rep = NULL;
3556 * Initialize lhc->mlh_reg_lh either from a previously granted lock
3557 * (for the resend case) or a new lock. Below we will use it to
3558 * replace the original lock.
3560 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3561 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3562 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
3563 rc = mdt_object_lock(info, info->mti_object, lhc,
3564 MDS_INODELOCK_XATTR);
3569 rc = mdt_getxattr(info);
3571 if (mdt_info_req(info)->rq_repmsg != NULL)
3572 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3574 if (ldlm_rep == NULL ||
3575 OBD_FAIL_CHECK(OBD_FAIL_MDS_XATTR_REP)) {
3576 mdt_object_unlock(info, info->mti_object, lhc, 1);
3577 RETURN(err_serious(-EFAULT));
3580 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3582 /* This is left for interop instead of adding a new interop flag.
3584 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(3, 0, 0, 0)
3585 if (ldlm_rep->lock_policy_res2) {
3586 mdt_object_unlock(info, info->mti_object, lhc, 1);
3587 RETURN(ELDLM_LOCK_ABORTED);
3591 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3595 static int mdt_intent_getattr(enum mdt_it_code opcode,
3596 struct mdt_thread_info *info,
3597 struct ldlm_lock **lockp,
3600 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3602 struct ldlm_reply *ldlm_rep;
3603 struct mdt_body *reqbody;
3604 struct mdt_body *repbody;
3608 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3611 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3614 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
3615 repbody->mbo_eadatasize = 0;
3616 repbody->mbo_aclsize = 0;
3620 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
3622 case MDT_IT_GETATTR:
3623 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
3627 CERROR("Unsupported intent (%d)\n", opcode);
3628 GOTO(out_shrink, rc = -EINVAL);
3631 rc = mdt_init_ucred_intent_getattr(info, reqbody);
3633 GOTO(out_shrink, rc);
3635 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3636 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3638 /* Get lock from request for possible resent case. */
3639 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3641 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3642 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3644 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3645 ldlm_rep->lock_policy_res2 = 0;
3646 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3647 ldlm_rep->lock_policy_res2) {
3648 lhc->mlh_reg_lh.cookie = 0ull;
3649 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3652 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3655 mdt_exit_ucred(info);
3657 mdt_client_compatibility(info);
3658 rc2 = mdt_fix_reply(info);
3664 static int mdt_intent_layout(enum mdt_it_code opcode,
3665 struct mdt_thread_info *info,
3666 struct ldlm_lock **lockp,
3669 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_LAYOUT];
3670 struct md_layout_change layout = { .mlc_opc = MD_LAYOUT_NOP };
3671 struct layout_intent *intent;
3672 struct lu_fid *fid = &info->mti_tmp_fid2;
3673 struct mdt_object *obj = NULL;
3674 int layout_size = 0;
3678 if (opcode != MDT_IT_LAYOUT) {
3679 CERROR("%s: Unknown intent (%d)\n", mdt_obd_name(info->mti_mdt),
3684 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
3686 intent = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
3690 CDEBUG(D_INFO, DFID "got layout change request from client: "
3691 "opc:%u flags:%#x extent "DEXT"\n",
3692 PFID(fid), intent->li_opc, intent->li_flags,
3693 PEXT(&intent->li_extent));
3695 switch (intent->li_opc) {
3696 case LAYOUT_INTENT_TRUNC:
3697 case LAYOUT_INTENT_WRITE:
3698 layout.mlc_opc = MD_LAYOUT_WRITE;
3699 layout.mlc_intent = intent;
3701 case LAYOUT_INTENT_ACCESS:
3703 case LAYOUT_INTENT_READ:
3704 case LAYOUT_INTENT_GLIMPSE:
3705 case LAYOUT_INTENT_RELEASE:
3706 case LAYOUT_INTENT_RESTORE:
3707 CERROR("%s: Unsupported layout intent opc %d\n",
3708 mdt_obd_name(info->mti_mdt), intent->li_opc);
3712 CERROR("%s: Unknown layout intent opc %d\n",
3713 mdt_obd_name(info->mti_mdt), intent->li_opc);
3720 /* Get lock from request for possible resent case. */
3721 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3723 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
3725 GOTO(out, rc = PTR_ERR(obj));
3728 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
3729 /* if layout is going to be changed don't use the current EA
3730 * size but the maximum one. That buffer will be shrinked
3731 * to the actual size in req_capsule_shrink() before reply.
3733 if (layout.mlc_opc == MD_LAYOUT_WRITE) {
3734 layout_size = info->mti_mdt->mdt_max_mdsize;
3736 layout_size = mdt_attr_get_eabuf_size(info, obj);
3737 if (layout_size < 0)
3738 GOTO(out_obj, rc = layout_size);
3740 if (layout_size > info->mti_mdt->mdt_max_mdsize)
3741 info->mti_mdt->mdt_max_mdsize = layout_size;
3746 * set reply buffer size, so that ldlm_handle_enqueue0()->
3747 * ldlm_lvbo_fill() will fill the reply buffer with lovea.
3749 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
3750 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
3752 rc = req_capsule_server_pack(info->mti_pill);
3757 if (layout.mlc_opc != MD_LAYOUT_NOP) {
3758 struct lu_buf *buf = &layout.mlc_buf;
3761 * mdt_layout_change is a reint operation, when the request
3762 * is resent, layout write shouldn't reprocess it again.
3764 rc = mdt_check_resent(info, mdt_reconstruct_generic, lhc);
3766 GOTO(out_obj, rc = rc < 0 ? rc : 0);
3769 * There is another resent case: the client's job has been
3770 * done by another client, referring lod_declare_layout_change
3771 * -EALREADY case, and it became a operation w/o transaction,
3772 * so we should not do the layout change, otherwise
3773 * mdt_layout_change() will try to cancel the granted server
3774 * CR lock whose remote counterpart is still in hold on the
3775 * client, and a deadlock ensues.
3777 rc = mdt_check_resent_lock(info, obj, lhc);
3783 if (unlikely(req_is_replay(mdt_info_req(info)))) {
3784 buf->lb_buf = req_capsule_client_get(info->mti_pill,
3786 buf->lb_len = req_capsule_get_size(info->mti_pill,
3787 &RMF_EADATA, RCL_CLIENT);
3789 * If it's a replay of layout write intent RPC, the
3790 * client has saved the extended lovea when
3791 * it get reply then.
3793 if (buf->lb_len > 0)
3794 mdt_fix_lov_magic(info, buf->lb_buf);
3797 * Instantiate some layout components, if @buf contains
3798 * lovea, then it's a replay of the layout intent write
3801 rc = mdt_layout_change(info, obj, &layout);
3806 mdt_object_put(info->mti_env, obj);
3808 if (rc == 0 && lustre_handle_is_used(&lhc->mlh_reg_lh))
3809 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3812 lhc->mlh_reg_lh.cookie = 0;
3817 static int mdt_intent_open(enum mdt_it_code opcode,
3818 struct mdt_thread_info *info,
3819 struct ldlm_lock **lockp,
3822 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3823 struct ldlm_reply *rep = NULL;
3827 static const struct req_format *intent_fmts[REINT_MAX] = {
3828 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3829 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3834 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
3838 /* Get lock from request for possible resent case. */
3839 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3841 rc = mdt_reint_internal(info, lhc, opc);
3843 /* Check whether the reply has been packed successfully. */
3844 if (mdt_info_req(info)->rq_repmsg != NULL)
3845 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3847 RETURN(err_serious(-EFAULT));
3849 /* MDC expects this in any case */
3851 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3853 /* the open lock or the lock for cross-ref object should be
3854 * returned to the client */
3855 if (lustre_handle_is_used(&lhc->mlh_reg_lh) &&
3856 (rc == 0 || rc == -MDT_EREMOTE_OPEN)) {
3857 rep->lock_policy_res2 = 0;
3858 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3862 rep->lock_policy_res2 = clear_serious(rc);
3864 if (rep->lock_policy_res2 == -ENOENT &&
3865 mdt_get_disposition(rep, DISP_LOOKUP_NEG) &&
3866 !mdt_get_disposition(rep, DISP_OPEN_CREATE))
3867 rep->lock_policy_res2 = 0;
3869 lhc->mlh_reg_lh.cookie = 0ull;
3870 if (rc == -ENOTCONN || rc == -ENODEV ||
3871 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3873 * If it is the disconnect error (ENODEV & ENOCONN), the error
3874 * will be returned by rq_status, and client at ptlrpc layer
3875 * will detect this, then disconnect, reconnect the import
3876 * immediately, instead of impacting the following the rpc.
3881 * For other cases, the error will be returned by intent, and client
3882 * will retrieve the result from intent.
3884 RETURN(ELDLM_LOCK_ABORTED);
3887 static struct mdt_it_flavor {
3888 const struct req_format *it_fmt;
3889 int (*it_act)(enum mdt_it_code,
3890 struct mdt_thread_info *,
3891 struct ldlm_lock **,
3893 enum tgt_handler_flags it_handler_flags;
3894 } mdt_it_flavor[] = {
3897 * OCREAT is not a MUTABOR request as if the file
3899 * We do the extra check of OBD_CONNECT_RDONLY in
3900 * mdt_reint_open() when we really need to create
3903 .it_fmt = &RQF_LDLM_INTENT,
3904 .it_act = mdt_intent_open,
3906 [MDT_IT_GETATTR] = {
3907 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3908 .it_act = mdt_intent_getattr,
3909 .it_handler_flags = HABEO_REFERO,
3912 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3913 .it_act = mdt_intent_getattr,
3914 .it_handler_flags = HABEO_REFERO,
3916 [MDT_IT_GETXATTR] = {
3917 .it_fmt = &RQF_LDLM_INTENT_GETXATTR,
3918 .it_act = mdt_intent_getxattr,
3919 .it_handler_flags = HABEO_CORPUS,
3922 .it_fmt = &RQF_LDLM_INTENT_LAYOUT,
3923 .it_act = mdt_intent_layout,
3925 [MDT_IT_GLIMPSE] = {
3926 .it_fmt = &RQF_LDLM_INTENT,
3927 .it_act = mdt_intent_glimpse,
3930 .it_fmt = &RQF_LDLM_INTENT,
3931 .it_act = mdt_intent_brw,
3935 static int mdt_intent_opc(enum ldlm_intent_flags it_code,
3936 struct mdt_thread_info *info,
3937 struct ldlm_lock **lockp, __u64 flags)
3939 struct req_capsule *pill = info->mti_pill;
3940 struct ptlrpc_request *req = mdt_info_req(info);
3941 struct mdt_it_flavor *flv;
3942 enum mdt_it_code opc;
3948 case IT_OPEN|IT_CREAT:
3952 opc = MDT_IT_GETATTR;
3955 opc = MDT_IT_LOOKUP;
3958 opc = MDT_IT_GETXATTR;
3961 opc = MDT_IT_LAYOUT;
3963 case IT_QUOTA_DQACQ:
3968 opc = MDT_IT_GLIMPSE;
3974 CERROR("%s: unknown intent code %#x\n",
3975 mdt_obd_name(info->mti_mdt), it_code);
3979 if (opc == MDT_IT_QUOTA) {
3980 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
3983 RETURN(-EOPNOTSUPP);
3985 if (mdt_rdonly(req->rq_export))
3988 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
3989 /* pass the request to quota master */
3990 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
3991 mdt_info_req(info), lockp,
3996 if (!(0 <= opc && opc < ARRAY_SIZE(mdt_it_flavor)))
3999 flv = &mdt_it_flavor[opc];
4001 /* Fail early on unknown requests. */
4002 if (flv->it_fmt == NULL)
4005 req_capsule_extend(pill, flv->it_fmt);
4007 rc = mdt_unpack_req_pack_rep(info, flv->it_handler_flags);
4011 if (flv->it_handler_flags & MUTABOR && mdt_rdonly(req->rq_export))
4014 if (flv->it_act != NULL) {
4015 struct ldlm_reply *rep;
4017 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_INTENT_DELAY, 10);
4019 /* execute policy */
4020 rc = flv->it_act(opc, info, lockp, flags);
4022 /* Check whether the reply has been packed successfully. */
4023 if (req->rq_repmsg != NULL) {
4024 rep = req_capsule_server_get(info->mti_pill,
4026 rep->lock_policy_res2 =
4027 ptlrpc_status_hton(rep->lock_policy_res2);
4034 static void mdt_ptlrpc_stats_update(struct ptlrpc_request *req,
4035 enum ldlm_intent_flags it_opc)
4037 struct lprocfs_stats *srv_stats = ptlrpc_req2svc(req)->srv_stats;
4039 /* update stats when IT code is known */
4040 if (srv_stats != NULL)
4041 lprocfs_counter_incr(srv_stats,
4042 PTLRPC_LAST_CNTR + (it_opc == IT_GLIMPSE ?
4043 LDLM_GLIMPSE_ENQUEUE : LDLM_IBITS_ENQUEUE));
4046 static int mdt_intent_policy(struct ldlm_namespace *ns,
4047 struct ldlm_lock **lockp, void *req_cookie,
4048 enum ldlm_mode mode, __u64 flags, void *data)
4050 struct tgt_session_info *tsi;
4051 struct mdt_thread_info *info;
4052 struct ptlrpc_request *req = req_cookie;
4053 struct ldlm_intent *it;
4054 struct req_capsule *pill;
4055 const struct ldlm_lock_desc *ldesc;
4060 LASSERT(req != NULL);
4062 tsi = tgt_ses_info(req->rq_svc_thread->t_env);
4064 info = tsi2mdt_info(tsi);
4065 LASSERT(info != NULL);
4066 pill = info->mti_pill;
4067 LASSERT(pill->rc_req == req);
4068 ldesc = &info->mti_dlm_req->lock_desc;
4070 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
4071 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
4072 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
4074 mdt_ptlrpc_stats_update(req, it->opc);
4075 rc = mdt_intent_opc(it->opc, info, lockp, flags);
4079 /* Lock without inodebits makes no sense and will oops
4080 * later in ldlm. Let's check it now to see if we have
4081 * ibits corrupted somewhere in mdt_intent_opc().
4082 * The case for client miss to set ibits has been
4083 * processed by others. */
4084 LASSERT(ergo(ldesc->l_resource.lr_type == LDLM_IBITS,
4085 ldesc->l_policy_data.l_inodebits.bits != 0));
4087 rc = err_serious(-EFAULT);
4090 /* No intent was provided */
4091 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
4092 rc = req_capsule_server_pack(pill);
4094 rc = err_serious(rc);
4096 mdt_thread_info_fini(info);
4100 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
4102 struct seq_server_site *ss = mdt_seq_site(mdt);
4104 if (ss->ss_node_id == 0)
4107 if (ss->ss_client_seq != NULL) {
4108 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
4109 ss->ss_client_seq->lcs_exp = NULL;
4112 if (ss->ss_server_fld != NULL) {
4113 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
4114 ss->ss_server_fld->lsf_control_exp = NULL;
4118 static void mdt_seq_fini_cli(struct mdt_device *mdt)
4120 struct seq_server_site *ss = mdt_seq_site(mdt);
4125 if (ss->ss_server_seq != NULL)
4126 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
4129 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
4131 mdt_seq_fini_cli(mdt);
4132 mdt_deregister_seq_exp(mdt);
4134 return seq_site_fini(env, mdt_seq_site(mdt));
4138 * It will retrieve its FLDB entries from MDT0, and it only happens
4139 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
4140 * and it needs to refresh FLDB from the MDT0.
4142 static int mdt_register_lwp_callback(void *data)
4145 struct mdt_device *mdt = data;
4146 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
4150 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
4152 rc = lu_env_init(&env, LCT_MD_THREAD);
4154 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
4158 /* Allocate new sequence now to avoid creating local transaction
4159 * in the normal transaction process */
4160 rc = seq_server_check_and_alloc_super(&env,
4161 mdt_seq_site(mdt)->ss_server_seq);
4166 rc = fld_update_from_controller(&env, fld);
4168 CERROR("%s: cannot update controller: rc = %d\n",
4169 mdt_obd_name(mdt), rc);
4178 static int mdt_register_seq_exp(struct mdt_device *mdt)
4180 struct seq_server_site *ss = mdt_seq_site(mdt);
4181 char *lwp_name = NULL;
4184 if (ss->ss_node_id == 0)
4187 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
4188 if (lwp_name == NULL)
4189 GOTO(out_free, rc = -ENOMEM);
4191 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
4195 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
4200 rc = lustre_register_lwp_item(lwp_name,
4201 &ss->ss_server_fld->lsf_control_exp,
4202 mdt_register_lwp_callback, mdt);
4204 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
4205 ss->ss_client_seq->lcs_exp = NULL;
4209 if (lwp_name != NULL)
4210 OBD_FREE(lwp_name, MAX_OBD_NAME);
4216 * Init client sequence manager which is used by local MDS to talk to sequence
4217 * controller on remote node.
4219 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
4221 struct seq_server_site *ss = mdt_seq_site(mdt);
4226 /* check if this is adding the first MDC and controller is not yet
4228 OBD_ALLOC_PTR(ss->ss_client_seq);
4229 if (ss->ss_client_seq == NULL)
4232 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
4233 if (prefix == NULL) {
4234 OBD_FREE_PTR(ss->ss_client_seq);
4235 ss->ss_client_seq = NULL;
4239 /* Note: seq_client_fini will be called in seq_site_fini */
4240 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
4241 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
4242 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
4244 OBD_FREE(prefix, MAX_OBD_NAME + 5);
4246 OBD_FREE_PTR(ss->ss_client_seq);
4247 ss->ss_client_seq = NULL;
4251 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
4256 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
4258 struct seq_server_site *ss;
4262 ss = mdt_seq_site(mdt);
4263 /* init sequence controller server(MDT0) */
4264 if (ss->ss_node_id == 0) {
4265 OBD_ALLOC_PTR(ss->ss_control_seq);
4266 if (ss->ss_control_seq == NULL)
4269 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
4270 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
4273 GOTO(out_seq_fini, rc);
4276 /* Init normal sequence server */
4277 OBD_ALLOC_PTR(ss->ss_server_seq);
4278 if (ss->ss_server_seq == NULL)
4279 GOTO(out_seq_fini, rc = -ENOMEM);
4281 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
4282 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
4284 GOTO(out_seq_fini, rc);
4286 /* init seq client for seq server to talk to seq controller(MDT0) */
4287 rc = mdt_seq_init_cli(env, mdt);
4289 GOTO(out_seq_fini, rc);
4291 if (ss->ss_node_id != 0)
4292 /* register controller export through lwp */
4293 rc = mdt_register_seq_exp(mdt);
4298 mdt_seq_fini(env, mdt);
4306 static int mdt_fld_fini(const struct lu_env *env,
4307 struct mdt_device *m)
4309 struct seq_server_site *ss = mdt_seq_site(m);
4312 if (ss && ss->ss_server_fld) {
4313 fld_server_fini(env, ss->ss_server_fld);
4314 OBD_FREE_PTR(ss->ss_server_fld);
4315 ss->ss_server_fld = NULL;
4321 static int mdt_fld_init(const struct lu_env *env,
4323 struct mdt_device *m)
4325 struct seq_server_site *ss;
4329 ss = mdt_seq_site(m);
4331 OBD_ALLOC_PTR(ss->ss_server_fld);
4332 if (ss->ss_server_fld == NULL)
4333 RETURN(rc = -ENOMEM);
4335 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
4338 OBD_FREE_PTR(ss->ss_server_fld);
4339 ss->ss_server_fld = NULL;
4346 static void mdt_stack_pre_fini(const struct lu_env *env,
4347 struct mdt_device *m, struct lu_device *top)
4349 struct lustre_cfg_bufs *bufs;
4350 struct lustre_cfg *lcfg;
4351 struct mdt_thread_info *info;
4356 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4357 LASSERT(info != NULL);
4359 bufs = &info->mti_u.bufs;
4361 LASSERT(m->mdt_child_exp);
4362 LASSERT(m->mdt_child_exp->exp_obd);
4364 /* process cleanup, pass mdt obd name to get obd umount flags */
4365 /* XXX: this is needed because all layers are referenced by
4366 * objects (some of them are pinned by osd, for example *
4367 * the proper solution should be a model where object used
4368 * by osd only doesn't have mdt/mdd slices -bzzz */
4369 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
4370 lustre_cfg_bufs_set_string(bufs, 1, NULL);
4371 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4374 lustre_cfg_init(lcfg, LCFG_PRE_CLEANUP, bufs);
4376 top->ld_ops->ldo_process_config(env, top, lcfg);
4377 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4381 static void mdt_stack_fini(const struct lu_env *env,
4382 struct mdt_device *m, struct lu_device *top)
4384 struct obd_device *obd = mdt2obd_dev(m);
4385 struct lustre_cfg_bufs *bufs;
4386 struct lustre_cfg *lcfg;
4387 struct mdt_thread_info *info;
4391 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4392 LASSERT(info != NULL);
4394 lu_dev_del_linkage(top->ld_site, top);
4396 lu_site_purge(env, top->ld_site, -1);
4398 bufs = &info->mti_u.bufs;
4399 /* process cleanup, pass mdt obd name to get obd umount flags */
4400 /* another purpose is to let all layers to release their objects */
4401 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
4406 lustre_cfg_bufs_set_string(bufs, 1, flags);
4407 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4410 lustre_cfg_init(lcfg, LCFG_CLEANUP, bufs);
4413 top->ld_ops->ldo_process_config(env, top, lcfg);
4414 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4416 lu_site_purge(env, top->ld_site, -1);
4418 m->mdt_child = NULL;
4419 m->mdt_bottom = NULL;
4421 obd_disconnect(m->mdt_child_exp);
4422 m->mdt_child_exp = NULL;
4424 obd_disconnect(m->mdt_bottom_exp);
4425 m->mdt_child_exp = NULL;
4428 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
4429 const char *next, struct obd_export **exp)
4431 struct obd_connect_data *data = NULL;
4432 struct obd_device *obd;
4436 OBD_ALLOC_PTR(data);
4438 GOTO(out, rc = -ENOMEM);
4440 obd = class_name2obd(next);
4442 CERROR("%s: can't locate next device: %s\n",
4443 mdt_obd_name(m), next);
4444 GOTO(out, rc = -ENOTCONN);
4447 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4448 data->ocd_version = LUSTRE_VERSION_CODE;
4450 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
4452 CERROR("%s: cannot connect to next dev %s (%d)\n",
4453 mdt_obd_name(m), next, rc);
4463 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
4464 struct lustre_cfg *cfg)
4466 char *dev = lustre_cfg_string(cfg, 0);
4467 int rc, name_size, uuid_size;
4468 char *name, *uuid, *p;
4469 struct lustre_cfg_bufs *bufs;
4470 struct lustre_cfg *lcfg;
4471 struct obd_device *obd;
4472 struct lustre_profile *lprof;
4473 struct lu_site *site;
4476 /* in 1.8 we had the only device in the stack - MDS.
4477 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
4478 * in 2.3 OSD is instantiated by obd_mount.c, so we need
4479 * to generate names and setup MDT, MDD. MDT will be using
4480 * generated name to connect to MDD. for MDD the next device
4481 * will be LOD with name taken from so called "profile" which
4482 * is generated by mount_option line
4484 * 1.8 MGS generates config. commands like this:
4485 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
4486 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
4487 * 2.0 MGS generates config. commands like this:
4488 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
4489 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4490 * 3:lustre-MDT0000-mdtlov 4:f
4492 * we generate MDD name from MDT one, just replacing T with D
4494 * after all the preparations, the logical equivalent will be
4495 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
4496 * 3:lustre-MDT0000-mdtlov 4:f
4497 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4498 * 3:lustre-MDD0000 4:f
4500 * notice we build the stack from down to top: MDD first, then MDT */
4502 name_size = MAX_OBD_NAME;
4503 uuid_size = MAX_OBD_NAME;
4505 OBD_ALLOC(name, name_size);
4506 OBD_ALLOC(uuid, uuid_size);
4507 if (name == NULL || uuid == NULL)
4508 GOTO(cleanup_mem, rc = -ENOMEM);
4510 OBD_ALLOC_PTR(bufs);
4512 GOTO(cleanup_mem, rc = -ENOMEM);
4515 p = strstr(name, "-MDT");
4517 GOTO(free_bufs, rc = -ENOMEM);
4520 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
4522 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4523 if (lprof == NULL || lprof->lp_dt == NULL) {
4524 CERROR("can't find the profile: %s\n",
4525 lustre_cfg_string(cfg, 0));
4526 GOTO(free_bufs, rc = -EINVAL);
4529 lustre_cfg_bufs_reset(bufs, name);
4530 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
4531 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4532 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4534 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4536 GOTO(put_profile, rc = -ENOMEM);
4537 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
4539 rc = class_attach(lcfg);
4541 GOTO(lcfg_cleanup, rc);
4543 obd = class_name2obd(name);
4545 CERROR("Can not find obd %s (%s in config)\n",
4546 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
4547 GOTO(lcfg_cleanup, rc = -EINVAL);
4550 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4552 lustre_cfg_bufs_reset(bufs, name);
4553 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4554 lustre_cfg_bufs_set_string(bufs, 2, dev);
4555 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4557 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4559 GOTO(class_detach, rc = -ENOMEM);
4560 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
4562 rc = class_setup(obd, lcfg);
4564 GOTO(class_detach, rc);
4566 /* connect to MDD we just setup */
4567 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
4569 GOTO(class_detach, rc);
4571 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
4573 LASSERT(mdt_lu_site(mdt) == NULL);
4574 mdt->mdt_lu_dev.ld_site = site;
4575 site->ls_top_dev = &mdt->mdt_lu_dev;
4576 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
4578 /* now connect to bottom OSD */
4579 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
4580 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
4582 GOTO(class_detach, rc);
4584 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
4586 rc = lu_env_refill((struct lu_env *)env);
4588 CERROR("Failure to refill session: '%d'\n", rc);
4590 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
4595 class_detach(obd, lcfg);
4597 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4599 class_put_profile(lprof);
4604 OBD_FREE(name, name_size);
4606 OBD_FREE(uuid, uuid_size);
4610 /* setup quota master target on MDT0 */
4611 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
4612 struct lustre_cfg *cfg)
4614 struct obd_device *obd;
4615 char *dev = lustre_cfg_string(cfg, 0);
4616 char *qmtname, *uuid, *p;
4617 struct lustre_cfg_bufs *bufs;
4618 struct lustre_cfg *lcfg;
4619 struct lustre_profile *lprof;
4620 struct obd_connect_data *data;
4624 LASSERT(mdt->mdt_qmt_exp == NULL);
4625 LASSERT(mdt->mdt_qmt_dev == NULL);
4627 /* quota master is on MDT0 only for now */
4628 if (mdt->mdt_seq_site.ss_node_id != 0)
4631 /* MGS generates config commands which look as follows:
4632 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4633 * 3:lustre-MDT0000-mdtlov 4:f
4635 * We generate the QMT name from the MDT one, just replacing MD with QM
4636 * after all the preparations, the logical equivalent will be:
4637 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
4638 * 3:lustre-MDT0000-osd 4:f */
4639 OBD_ALLOC(qmtname, MAX_OBD_NAME);
4640 OBD_ALLOC(uuid, UUID_MAX);
4641 OBD_ALLOC_PTR(bufs);
4642 OBD_ALLOC_PTR(data);
4643 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
4644 GOTO(cleanup_mem, rc = -ENOMEM);
4646 strcpy(qmtname, dev);
4647 p = strstr(qmtname, "-MDT");
4649 GOTO(cleanup_mem, rc = -ENOMEM);
4650 /* replace MD with QM */
4654 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
4656 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4657 if (lprof == NULL || lprof->lp_dt == NULL) {
4658 CERROR("can't find profile for %s\n",
4659 lustre_cfg_string(cfg, 0));
4660 GOTO(cleanup_mem, rc = -EINVAL);
4663 lustre_cfg_bufs_reset(bufs, qmtname);
4664 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
4665 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4666 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4668 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4670 GOTO(put_profile, rc = -ENOMEM);
4671 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
4673 rc = class_attach(lcfg);
4675 GOTO(lcfg_cleanup, rc);
4677 obd = class_name2obd(qmtname);
4679 CERROR("Can not find obd %s (%s in config)\n", qmtname,
4680 lustre_cfg_string(cfg, 0));
4681 GOTO(lcfg_cleanup, rc = -EINVAL);
4684 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4686 lustre_cfg_bufs_reset(bufs, qmtname);
4687 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4688 lustre_cfg_bufs_set_string(bufs, 2, dev);
4690 /* for quota, the next device should be the OSD device */
4691 lustre_cfg_bufs_set_string(bufs, 3,
4692 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
4694 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4696 GOTO(class_detach, rc = -ENOMEM);
4697 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
4699 rc = class_setup(obd, lcfg);
4701 GOTO(class_detach, rc);
4703 mdt->mdt_qmt_dev = obd->obd_lu_dev;
4705 /* configure local quota objects */
4706 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
4710 GOTO(class_cleanup, rc);
4712 /* connect to quota master target */
4713 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4714 data->ocd_version = LUSTRE_VERSION_CODE;
4715 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
4718 CERROR("cannot connect to quota master device %s (%d)\n",
4720 GOTO(class_cleanup, rc);
4726 class_manual_cleanup(obd);
4727 mdt->mdt_qmt_dev = NULL;
4731 class_detach(obd, lcfg);
4733 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4735 class_put_profile(lprof);
4740 OBD_FREE(qmtname, MAX_OBD_NAME);
4742 OBD_FREE(uuid, UUID_MAX);
4748 /* Shutdown quota master target associated with mdt */
4749 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
4753 if (mdt->mdt_qmt_exp == NULL)
4755 LASSERT(mdt->mdt_qmt_dev != NULL);
4757 /* the qmt automatically shuts down when the mdt disconnects */
4758 obd_disconnect(mdt->mdt_qmt_exp);
4759 mdt->mdt_qmt_exp = NULL;
4760 mdt->mdt_qmt_dev = NULL;
4764 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
4765 * for now. This will be removed along with converting rest of MDT code
4766 * to use tgt_session_info */
4767 static int mdt_tgt_getxattr(struct tgt_session_info *tsi)
4769 struct mdt_thread_info *info = tsi2mdt_info(tsi);
4772 rc = mdt_getxattr(info);
4774 mdt_thread_info_fini(info);
4778 #define OBD_FAIL_OST_READ_NET OBD_FAIL_OST_BRW_NET
4779 #define OBD_FAIL_OST_WRITE_NET OBD_FAIL_OST_BRW_NET
4780 #define OST_BRW_READ OST_READ
4781 #define OST_BRW_WRITE OST_WRITE
4783 static struct tgt_handler mdt_tgt_handlers[] = {
4784 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4785 0, MDS_CONNECT, mdt_tgt_connect,
4786 &RQF_CONNECT, LUSTRE_OBD_VERSION),
4787 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4788 0, MDS_DISCONNECT, tgt_disconnect,
4789 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
4790 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4791 HABEO_REFERO, MDS_SET_INFO, mdt_set_info,
4792 &RQF_OBD_SET_INFO, LUSTRE_MDS_VERSION),
4793 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
4794 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_GET_ROOT, mdt_get_root),
4795 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETATTR, mdt_getattr),
4796 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_GETATTR_NAME,
4798 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETXATTR, mdt_tgt_getxattr),
4799 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_STATFS, mdt_statfs),
4800 TGT_MDT_HDL(0 | MUTABOR, MDS_REINT, mdt_reint),
4801 TGT_MDT_HDL(HABEO_CORPUS, MDS_CLOSE, mdt_close),
4802 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_READPAGE, mdt_readpage),
4803 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_SYNC, mdt_sync),
4804 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
4805 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_PROGRESS,
4807 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_REGISTER,
4808 mdt_hsm_ct_register),
4809 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_UNREGISTER,
4810 mdt_hsm_ct_unregister),
4811 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_STATE_GET,
4813 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_STATE_SET,
4815 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_ACTION, mdt_hsm_action),
4816 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_REQUEST,
4818 TGT_MDT_HDL(HABEO_CLAVIS | HABEO_CORPUS | HABEO_REFERO | MUTABOR,
4823 static struct tgt_handler mdt_io_ops[] = {
4824 TGT_OST_HDL_HP(HABEO_CORPUS | HABEO_REFERO, OST_BRW_READ, tgt_brw_read,
4826 TGT_OST_HDL_HP(HABEO_CORPUS | MUTABOR, OST_BRW_WRITE, tgt_brw_write,
4828 TGT_OST_HDL_HP(HABEO_CORPUS | HABEO_REFERO | MUTABOR,
4829 OST_PUNCH, mdt_punch_hdl,
4831 TGT_OST_HDL(HABEO_CORPUS | HABEO_REFERO, OST_SYNC, mdt_data_sync),
4834 static struct tgt_handler mdt_sec_ctx_ops[] = {
4835 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
4836 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
4837 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
4840 static struct tgt_handler mdt_quota_ops[] = {
4841 TGT_QUOTA_HDL(HABEO_REFERO, QUOTA_DQACQ, mdt_quota_dqacq),
4844 static struct tgt_opc_slice mdt_common_slice[] = {
4846 .tos_opc_start = MDS_FIRST_OPC,
4847 .tos_opc_end = MDS_LAST_OPC,
4848 .tos_hs = mdt_tgt_handlers
4851 .tos_opc_start = OBD_FIRST_OPC,
4852 .tos_opc_end = OBD_LAST_OPC,
4853 .tos_hs = tgt_obd_handlers
4856 .tos_opc_start = LDLM_FIRST_OPC,
4857 .tos_opc_end = LDLM_LAST_OPC,
4858 .tos_hs = tgt_dlm_handlers
4861 .tos_opc_start = SEC_FIRST_OPC,
4862 .tos_opc_end = SEC_LAST_OPC,
4863 .tos_hs = mdt_sec_ctx_ops
4866 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
4867 .tos_opc_end = OUT_UPDATE_LAST_OPC,
4868 .tos_hs = tgt_out_handlers
4871 .tos_opc_start = FLD_FIRST_OPC,
4872 .tos_opc_end = FLD_LAST_OPC,
4873 .tos_hs = fld_handlers
4876 .tos_opc_start = SEQ_FIRST_OPC,
4877 .tos_opc_end = SEQ_LAST_OPC,
4878 .tos_hs = seq_handlers
4881 .tos_opc_start = QUOTA_DQACQ,
4882 .tos_opc_end = QUOTA_LAST_OPC,
4883 .tos_hs = mdt_quota_ops
4886 .tos_opc_start = LLOG_FIRST_OPC,
4887 .tos_opc_end = LLOG_LAST_OPC,
4888 .tos_hs = tgt_llog_handlers
4891 .tos_opc_start = LFSCK_FIRST_OPC,
4892 .tos_opc_end = LFSCK_LAST_OPC,
4893 .tos_hs = tgt_lfsck_handlers
4896 .tos_opc_start = OST_FIRST_OPC,
4897 .tos_opc_end = OST_LAST_OPC,
4898 .tos_hs = mdt_io_ops
4905 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4907 struct md_device *next = m->mdt_child;
4908 struct lu_device *d = &m->mdt_lu_dev;
4909 struct obd_device *obd = mdt2obd_dev(m);
4910 struct lfsck_stop stop;
4913 stop.ls_status = LS_PAUSED;
4915 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
4917 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
4918 ping_evictor_stop();
4920 /* Remove the HSM /proc entry so the coordinator cannot be
4921 * restarted by a user while it's shutting down. */
4922 hsm_cdt_procfs_fini(m);
4923 mdt_hsm_cdt_stop(m);
4925 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
4926 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4928 if (m->mdt_namespace != NULL)
4929 ldlm_namespace_free_prior(m->mdt_namespace, NULL,
4930 d->ld_obd->obd_force);
4932 obd_exports_barrier(obd);
4933 obd_zombie_barrier();
4935 mdt_quota_fini(env, m);
4937 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
4939 /* Calling the cleanup functions in the same order as in the mdt_init0
4944 target_recovery_fini(obd);
4945 upcall_cache_cleanup(m->mdt_identity_cache);
4946 m->mdt_identity_cache = NULL;
4948 mdt_fs_cleanup(env, m);
4950 tgt_fini(env, &m->mdt_lut);
4952 mdt_hsm_cdt_fini(m);
4954 if (m->mdt_los != NULL) {
4955 local_oid_storage_fini(env, m->mdt_los);
4959 if (m->mdt_namespace != NULL) {
4960 ldlm_namespace_free_post(m->mdt_namespace);
4961 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
4964 if (m->mdt_md_root != NULL) {
4965 mdt_object_put(env, m->mdt_md_root);
4966 m->mdt_md_root = NULL;
4969 mdt_seq_fini(env, m);
4971 mdt_fld_fini(env, m);
4976 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4978 LASSERT(atomic_read(&d->ld_ref) == 0);
4980 server_put_mount(mdt_obd_name(m), true);
4985 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4987 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4988 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4990 const struct dt_device_param *dt_conf;
4991 struct mdt_thread_info *info;
4992 struct obd_device *obd;
4993 const char *dev = lustre_cfg_string(cfg, 0);
4994 const char *num = lustre_cfg_string(cfg, 2);
4995 struct tg_grants_data *tgd = &m->mdt_lut.lut_tgd;
4996 struct lustre_mount_info *lmi = NULL;
4997 struct lustre_sb_info *lsi;
4999 struct seq_server_site *ss_site;
5000 const char *identity_upcall = "NONE";
5001 struct md_device *next;
5008 lu_device_init(&m->mdt_lu_dev, ldt);
5010 * Environment (env) might be missing mdt_thread_key values at that
5011 * point, if device is allocated when mdt_thread_key is in QUIESCENT
5014 * Usually device allocation path doesn't use module key values, but
5015 * mdt has to do a lot of work here, so allocate key value.
5017 rc = lu_env_refill((struct lu_env *)env);
5021 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5022 LASSERT(info != NULL);
5024 obd = class_name2obd(dev);
5025 LASSERT(obd != NULL);
5027 m->mdt_max_mdsize = MAX_MD_SIZE; /* 4 stripes */
5028 m->mdt_opts.mo_evict_tgt_nids = 1;
5029 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
5031 lmi = server_get_mount(dev);
5033 CERROR("Cannot get mount info for %s!\n", dev);
5036 lsi = s2lsi(lmi->lmi_sb);
5037 /* CMD is supported only in IAM mode */
5039 node_id = simple_strtol(num, NULL, 10);
5040 obd->u.obt.obt_magic = OBT_MAGIC;
5041 if (lsi->lsi_lmd != NULL &&
5042 lsi->lsi_lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
5043 m->mdt_skip_lfsck = 1;
5046 /* DoM files get IO lock at open by default */
5047 m->mdt_opts.mo_dom_lock = 1;
5049 m->mdt_squash.rsi_uid = 0;
5050 m->mdt_squash.rsi_gid = 0;
5051 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
5052 init_rwsem(&m->mdt_squash.rsi_sem);
5053 spin_lock_init(&m->mdt_lock);
5054 m->mdt_enable_remote_dir = 0;
5055 m->mdt_enable_remote_dir_gid = 0;
5057 atomic_set(&m->mdt_mds_mds_conns, 0);
5058 atomic_set(&m->mdt_async_commit_count, 0);
5060 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
5061 m->mdt_lu_dev.ld_obd = obd;
5062 /* Set this lu_device to obd for error handling purposes. */
5063 obd->obd_lu_dev = &m->mdt_lu_dev;
5065 /* init the stack */
5066 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
5068 CERROR("%s: Can't init device stack, rc %d\n",
5069 mdt_obd_name(m), rc);
5074 ss_site = mdt_seq_site(m);
5075 s->ld_seq_site = ss_site;
5078 /* set server index */
5079 ss_site->ss_node_id = node_id;
5081 /* failover is the default
5082 * FIXME: we do not failout mds0/mgs, which may cause some problems.
5083 * assumed whose ss_node_id == 0 XXX
5085 obd->obd_replayable = 1;
5086 /* No connection accepted until configurations will finish */
5087 obd->obd_no_conn = 1;
5089 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
5090 char *str = lustre_cfg_string(cfg, 4);
5091 if (strchr(str, 'n')) {
5092 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
5093 obd->obd_replayable = 0;
5097 rc = mdt_fld_init(env, mdt_obd_name(m), m);
5099 GOTO(err_fini_stack, rc);
5101 rc = mdt_seq_init(env, m);
5103 GOTO(err_fini_fld, rc);
5105 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
5106 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
5107 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
5108 LDLM_NAMESPACE_SERVER,
5109 LDLM_NAMESPACE_GREEDY,
5111 if (m->mdt_namespace == NULL)
5112 GOTO(err_fini_seq, rc = -ENOMEM);
5114 m->mdt_namespace->ns_lvbp = m;
5115 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
5117 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
5118 /* set obd_namespace for compatibility with old code */
5119 obd->obd_namespace = m->mdt_namespace;
5121 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
5122 OBD_FAIL_MDS_ALL_REQUEST_NET,
5123 OBD_FAIL_MDS_ALL_REPLY_NET);
5125 GOTO(err_free_ns, rc);
5127 /* Amount of available space excluded from granting and reserved
5128 * for metadata. It is in percentage and 50% is default value. */
5129 tgd->tgd_reserved_pcnt = 50;
5131 if (ONE_MB_BRW_SIZE < (1U << tgd->tgd_blockbits))
5132 m->mdt_brw_size = 1U << tgd->tgd_blockbits;
5134 m->mdt_brw_size = ONE_MB_BRW_SIZE;
5136 rc = mdt_fs_setup(env, m, obd, lsi);
5140 fid.f_seq = FID_SEQ_LOCAL_NAME;
5143 rc = local_oid_storage_init(env, m->mdt_bottom, &fid, &m->mdt_los);
5145 GOTO(err_fs_cleanup, rc);
5147 rc = mdt_hsm_cdt_init(m);
5149 CERROR("%s: error initializing coordinator, rc %d\n",
5150 mdt_obd_name(m), rc);
5151 GOTO(err_los_fini, rc);
5154 tgt_adapt_sptlrpc_conf(&m->mdt_lut);
5156 next = m->mdt_child;
5157 dt_conf = next->md_ops->mdo_dtconf_get(env, next);
5159 mntopts = dt_conf->ddp_mntopts;
5161 if (mntopts & MNTOPT_USERXATTR)
5162 m->mdt_opts.mo_user_xattr = 1;
5164 m->mdt_opts.mo_user_xattr = 0;
5166 m->mdt_max_ea_size = dt_conf->ddp_max_ea_size;
5168 if (mntopts & MNTOPT_ACL)
5169 m->mdt_opts.mo_acl = 1;
5171 m->mdt_opts.mo_acl = 0;
5173 /* XXX: to support suppgid for ACL, we enable identity_upcall
5174 * by default, otherwise, maybe got unexpected -EACCESS. */
5175 if (m->mdt_opts.mo_acl)
5176 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
5178 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
5180 &mdt_identity_upcall_cache_ops);
5181 if (IS_ERR(m->mdt_identity_cache)) {
5182 rc = PTR_ERR(m->mdt_identity_cache);
5183 m->mdt_identity_cache = NULL;
5184 GOTO(err_free_hsm, rc);
5187 rc = mdt_procfs_init(m, dev);
5189 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
5190 GOTO(err_recovery, rc);
5193 rc = mdt_quota_init(env, m, cfg);
5195 GOTO(err_procfs, rc);
5197 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
5198 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
5199 "mdt_ldlm_client", m->mdt_ldlm_client);
5201 ping_evictor_start();
5203 /* recovery will be started upon mdt_prepare()
5204 * when the whole stack is complete and ready
5205 * to serve the requests */
5207 /* Reduce the initial timeout on an MDS because it doesn't need such
5208 * a long timeout as an OST does. Adaptive timeouts will adjust this
5209 * value appropriately. */
5210 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
5211 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
5217 target_recovery_fini(obd);
5218 upcall_cache_cleanup(m->mdt_identity_cache);
5219 m->mdt_identity_cache = NULL;
5221 mdt_hsm_cdt_fini(m);
5223 local_oid_storage_fini(env, m->mdt_los);
5226 mdt_fs_cleanup(env, m);
5228 tgt_fini(env, &m->mdt_lut);
5230 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
5231 obd->obd_namespace = m->mdt_namespace = NULL;
5233 mdt_seq_fini(env, m);
5235 mdt_fld_fini(env, m);
5237 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5240 server_put_mount(dev, true);
5244 /* For interoperability, the left element is old parameter, the right one
5245 * is the new version of the parameter, if some parameter is deprecated,
5246 * the new version should be set as NULL. */
5247 static struct cfg_interop_param mdt_interop_param[] = {
5248 { "mdt.group_upcall", NULL },
5249 { "mdt.quota_type", NULL },
5250 { "mdd.quota_type", NULL },
5251 { "mdt.som", NULL },
5252 { "mdt.rootsquash", "mdt.root_squash" },
5253 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
5257 /* used by MGS to process specific configurations */
5258 static int mdt_process_config(const struct lu_env *env,
5259 struct lu_device *d, struct lustre_cfg *cfg)
5261 struct mdt_device *m = mdt_dev(d);
5262 struct md_device *md_next = m->mdt_child;
5263 struct lu_device *next = md2lu_dev(md_next);
5267 switch (cfg->lcfg_command) {
5269 struct obd_device *obd = d->ld_obd;
5271 /* For interoperability */
5272 struct cfg_interop_param *ptr = NULL;
5273 struct lustre_cfg *old_cfg = NULL;
5276 param = lustre_cfg_string(cfg, 1);
5277 if (param == NULL) {
5278 CERROR("param is empty\n");
5283 ptr = class_find_old_param(param, mdt_interop_param);
5285 if (ptr->new_param == NULL) {
5287 CWARN("For interoperability, skip this %s."
5288 " It is obsolete.\n", ptr->old_param);
5292 CWARN("Found old param %s, changed it to %s.\n",
5293 ptr->old_param, ptr->new_param);
5296 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
5303 rc = class_process_proc_param(PARAM_MDT, obd->obd_vars,
5305 if (rc > 0 || rc == -ENOSYS) {
5306 /* is it an HSM var ? */
5307 rc = class_process_proc_param(PARAM_HSM,
5308 hsm_cdt_get_proc_vars(),
5310 if (rc > 0 || rc == -ENOSYS)
5311 /* we don't understand; pass it on */
5312 rc = next->ld_ops->ldo_process_config(env, next,
5317 OBD_FREE(cfg, lustre_cfg_len(cfg->lcfg_bufcount,
5318 cfg->lcfg_buflens));
5322 /* others are passed further */
5323 rc = next->ld_ops->ldo_process_config(env, next, cfg);
5329 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
5330 const struct lu_object_header *hdr,
5331 struct lu_device *d)
5333 struct mdt_object *mo;
5337 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
5339 struct lu_object *o;
5340 struct lu_object_header *h;
5343 h = &mo->mot_header;
5344 lu_object_header_init(h);
5345 lu_object_init(o, h, d);
5346 lu_object_add_top(h, o);
5347 o->lo_ops = &mdt_obj_ops;
5348 spin_lock_init(&mo->mot_write_lock);
5349 mutex_init(&mo->mot_lov_mutex);
5350 init_rwsem(&mo->mot_dom_sem);
5351 init_rwsem(&mo->mot_open_sem);
5352 atomic_set(&mo->mot_open_count, 0);
5358 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
5359 const struct lu_object_conf *unused)
5361 struct mdt_device *d = mdt_dev(o->lo_dev);
5362 struct lu_device *under;
5363 struct lu_object *below;
5367 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
5368 PFID(lu_object_fid(o)));
5370 under = &d->mdt_child->md_lu_dev;
5371 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
5372 if (below != NULL) {
5373 lu_object_add(o, below);
5380 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
5382 struct mdt_object *mo = mdt_obj(o);
5383 struct lu_object_header *h;
5387 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
5388 PFID(lu_object_fid(o)));
5390 LASSERT(atomic_read(&mo->mot_open_count) == 0);
5391 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
5394 lu_object_header_fini(h);
5395 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
5400 static int mdt_object_print(const struct lu_env *env, void *cookie,
5401 lu_printer_t p, const struct lu_object *o)
5403 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
5405 return (*p)(env, cookie,
5406 LUSTRE_MDT_NAME"-object@%p(%s %s, writecount=%d)",
5407 mdto, mdto->mot_lov_created ? "lov_created" : "",
5408 mdto->mot_cache_attr ? "cache_attr" : "",
5409 mdto->mot_write_count);
5412 static int mdt_prepare(const struct lu_env *env,
5413 struct lu_device *pdev,
5414 struct lu_device *cdev)
5416 struct mdt_device *mdt = mdt_dev(cdev);
5417 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
5418 struct obd_device *obd = cdev->ld_obd;
5425 rc = next->ld_ops->ldo_prepare(env, cdev, next);
5429 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
5433 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
5437 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
5438 /* The LFSCK instance is registered just now, so it must be there when
5439 * register the namespace to such instance. */
5440 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
5442 if (mdt->mdt_seq_site.ss_node_id == 0) {
5443 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
5444 &mdt->mdt_md_root_fid);
5449 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
5451 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
5452 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
5453 LASSERT(obd->obd_no_conn);
5454 spin_lock(&obd->obd_dev_lock);
5455 obd->obd_no_conn = 0;
5456 spin_unlock(&obd->obd_dev_lock);
5458 if (obd->obd_recovering == 0)
5459 mdt_postrecov(env, mdt);
5464 const struct lu_device_operations mdt_lu_ops = {
5465 .ldo_object_alloc = mdt_object_alloc,
5466 .ldo_process_config = mdt_process_config,
5467 .ldo_prepare = mdt_prepare,
5470 static const struct lu_object_operations mdt_obj_ops = {
5471 .loo_object_init = mdt_object_init,
5472 .loo_object_free = mdt_object_free,
5473 .loo_object_print = mdt_object_print
5476 static int mdt_obd_set_info_async(const struct lu_env *env,
5477 struct obd_export *exp,
5478 __u32 keylen, void *key,
5479 __u32 vallen, void *val,
5480 struct ptlrpc_request_set *set)
5486 if (KEY_IS(KEY_SPTLRPC_CONF)) {
5487 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp));
5495 * Match client and server connection feature flags.
5497 * Compute the compatibility flags for a connection request based on
5498 * features mutually supported by client and server.
5500 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
5501 * must not be updated here, otherwise a partially initialized value may
5502 * be exposed. After the connection request is successfully processed,
5503 * the top-level MDT connect request handler atomically updates the export
5504 * connect flags from the obd_connect_data::ocd_connect_flags field of the
5505 * reply. \see mdt_connect().
5507 * Before 2.7.50 clients will send a struct obd_connect_data_v1 rather than a
5508 * full struct obd_connect_data. So care must be taken when accessing fields
5509 * that are not present in struct obd_connect_data_v1. See LU-16.
5511 * \param exp the obd_export associated with this client/target pair
5512 * \param mdt the target device for the connection
5513 * \param data stores data for this connect request
5516 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
5517 * \retval -EBADE client and server feature requirements are incompatible
5519 static int mdt_connect_internal(const struct lu_env *env,
5520 struct obd_export *exp,
5521 struct mdt_device *mdt,
5522 struct obd_connect_data *data, bool reconnect)
5524 const char *obd_name = mdt_obd_name(mdt);
5525 LASSERT(data != NULL);
5527 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
5529 if (mdt->mdt_bottom->dd_rdonly &&
5530 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
5531 !(data->ocd_connect_flags & OBD_CONNECT_RDONLY))
5534 if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
5535 data->ocd_connect_flags2 &= MDT_CONNECT_SUPPORTED2;
5537 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
5539 if (!mdt->mdt_opts.mo_acl)
5540 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
5542 if (!mdt->mdt_opts.mo_user_xattr)
5543 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
5545 if (OCD_HAS_FLAG(data, BRW_SIZE)) {
5546 data->ocd_brw_size = min(data->ocd_brw_size,
5548 if (data->ocd_brw_size == 0) {
5549 CERROR("%s: cli %s/%p ocd_connect_flags: %#llx "
5550 "ocd_version: %x ocd_grant: %d ocd_index: %u "
5551 "ocd_brw_size unexpectedly zero, network data "
5552 "corruption? Refusing to connect this client\n",
5553 obd_name, exp->exp_client_uuid.uuid,
5554 exp, data->ocd_connect_flags, data->ocd_version,
5555 data->ocd_grant, data->ocd_index);
5560 if (OCD_HAS_FLAG(data, GRANT_PARAM)) {
5561 struct dt_device_param *ddp = &mdt->mdt_lut.lut_dt_conf;
5563 /* client is reporting its page size, for future use */
5564 exp->exp_target_data.ted_pagebits = data->ocd_grant_blkbits;
5565 data->ocd_grant_blkbits = mdt->mdt_lut.lut_tgd.tgd_blockbits;
5566 /* ddp_inodespace may not be power-of-two value, eg. for ldiskfs
5567 * it's LDISKFS_DIR_REC_LEN(20) = 28. */
5568 data->ocd_grant_inobits = fls(ddp->ddp_inodespace - 1);
5569 /* ocd_grant_tax_kb is in 1K byte blocks */
5570 data->ocd_grant_tax_kb = ddp->ddp_extent_tax >> 10;
5571 data->ocd_grant_max_blks = ddp->ddp_max_extent_blks;
5574 /* Save connect_data we have so far because tgt_grant_connect()
5575 * uses it to calculate grant, and we want to save the client
5576 * version before it is overwritten by LUSTRE_VERSION_CODE. */
5577 exp->exp_connect_data = *data;
5578 if (OCD_HAS_FLAG(data, GRANT))
5579 tgt_grant_connect(env, exp, data, !reconnect);
5581 if (OCD_HAS_FLAG(data, MAXBYTES))
5582 data->ocd_maxbytes = mdt->mdt_lut.lut_dt_conf.ddp_maxbytes;
5584 /* NB: Disregard the rule against updating
5585 * exp_connect_data.ocd_connect_flags in this case, since
5586 * tgt_client_new() needs to know if this is a lightweight
5587 * connection, and it is safe to expose this flag before
5588 * connection processing completes. */
5589 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
5590 spin_lock(&exp->exp_lock);
5591 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
5592 spin_unlock(&exp->exp_lock);
5595 data->ocd_version = LUSTRE_VERSION_CODE;
5597 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
5598 CWARN("%s: MDS requires FID support, but client not\n",
5603 if (OCD_HAS_FLAG(data, PINGLESS)) {
5604 if (ptlrpc_pinger_suppress_pings()) {
5605 spin_lock(&exp->exp_obd->obd_dev_lock);
5606 list_del_init(&exp->exp_obd_chain_timed);
5607 spin_unlock(&exp->exp_obd->obd_dev_lock);
5609 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
5613 data->ocd_max_easize = mdt->mdt_max_ea_size;
5615 /* NB: Disregard the rule against updating
5616 * exp_connect_data.ocd_connect_flags in this case, since
5617 * tgt_client_new() needs to know if this is client supports
5618 * multiple modify RPCs, and it is safe to expose this flag before
5619 * connection processing completes. */
5620 if (data->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS) {
5621 data->ocd_maxmodrpcs = max_mod_rpcs_per_client;
5622 spin_lock(&exp->exp_lock);
5623 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_MULTIMODRPCS;
5624 spin_unlock(&exp->exp_lock);
5627 if (OCD_HAS_FLAG(data, CKSUM)) {
5628 __u32 cksum_types = data->ocd_cksum_types;
5630 /* The client set in ocd_cksum_types the checksum types it
5631 * supports. We have to mask off the algorithms that we don't
5633 data->ocd_cksum_types &=
5634 obd_cksum_types_supported_server(obd_name);
5636 if (unlikely(data->ocd_cksum_types == 0)) {
5637 CERROR("%s: Connect with checksum support but no "
5638 "ocd_cksum_types is set\n",
5639 exp->exp_obd->obd_name);
5643 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
5644 "%x\n", exp->exp_obd->obd_name, obd_export_nid2str(exp),
5645 cksum_types, data->ocd_cksum_types);
5647 /* This client does not support OBD_CONNECT_CKSUM
5648 * fall back to CRC32 */
5649 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
5650 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
5651 exp->exp_obd->obd_name, obd_export_nid2str(exp));
5657 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
5658 struct mdt_thread_info *info,
5659 struct mdt_file_data *mfd)
5661 struct lu_context ses;
5665 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
5670 lu_context_enter(&ses);
5672 mdt_ucred(info)->uc_valid = UCRED_OLD;
5673 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
5675 lu_context_exit(&ses);
5676 lu_context_fini(&ses);
5682 static int mdt_export_cleanup(struct obd_export *exp)
5684 struct list_head closing_list;
5685 struct mdt_export_data *med = &exp->exp_mdt_data;
5686 struct obd_device *obd = exp->exp_obd;
5687 struct mdt_device *mdt;
5688 struct mdt_thread_info *info;
5690 struct mdt_file_data *mfd, *n;
5694 INIT_LIST_HEAD(&closing_list);
5695 spin_lock(&med->med_open_lock);
5696 while (!list_empty(&med->med_open_head)) {
5697 struct list_head *tmp = med->med_open_head.next;
5698 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
5700 /* Remove mfd handle so it can't be found again.
5701 * We are consuming the mfd_list reference here. */
5702 class_handle_unhash(&mfd->mfd_handle);
5703 list_move_tail(&mfd->mfd_list, &closing_list);
5705 spin_unlock(&med->med_open_lock);
5706 mdt = mdt_dev(obd->obd_lu_dev);
5707 LASSERT(mdt != NULL);
5709 rc = lu_env_init(&env, LCT_MD_THREAD);
5713 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5714 LASSERT(info != NULL);
5715 memset(info, 0, sizeof *info);
5716 info->mti_env = &env;
5717 info->mti_mdt = mdt;
5718 info->mti_exp = exp;
5720 if (!list_empty(&closing_list)) {
5721 struct md_attr *ma = &info->mti_attr;
5723 /* Close any open files (which may also cause orphan
5725 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
5726 list_del_init(&mfd->mfd_list);
5727 ma->ma_need = ma->ma_valid = 0;
5729 /* This file is being closed due to an eviction, it
5730 * could have been modified and now dirty regarding to
5731 * HSM archive, check this!
5732 * The logic here is to mark a file dirty if there's a
5733 * chance it was dirtied before the client was evicted,
5734 * so that we don't have to wait for a release attempt
5735 * before finding out the file was actually dirty and
5736 * fail the release. Aggressively marking it dirty here
5737 * will cause the policy engine to attempt to
5738 * re-archive it; when rearchiving, we can compare the
5739 * current version to the HSM data_version and make the
5740 * archive request into a noop if it's not actually
5743 if (mfd->mfd_mode & MDS_FMODE_WRITE)
5744 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
5746 /* Don't unlink orphan on failover umount, LU-184 */
5747 if (exp->exp_flags & OBD_OPT_FAILOVER) {
5748 ma->ma_valid = MA_FLAGS;
5749 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
5751 mdt_mfd_close(info, mfd);
5754 info->mti_mdt = NULL;
5755 /* cleanup client slot early */
5756 /* Do not erase record for recoverable client. */
5757 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
5758 tgt_client_del(&env, exp);
5764 static inline void mdt_enable_slc(struct mdt_device *mdt)
5766 if (mdt->mdt_lut.lut_sync_lock_cancel == NEVER_SYNC_ON_CANCEL)
5767 mdt->mdt_lut.lut_sync_lock_cancel = BLOCKING_SYNC_ON_CANCEL;
5770 static inline void mdt_disable_slc(struct mdt_device *mdt)
5772 if (mdt->mdt_lut.lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL)
5773 mdt->mdt_lut.lut_sync_lock_cancel = NEVER_SYNC_ON_CANCEL;
5776 static int mdt_obd_disconnect(struct obd_export *exp)
5783 class_export_get(exp);
5785 if (!(exp->exp_flags & OBD_OPT_FORCE))
5786 tgt_grant_sanity_check(exp->exp_obd, __func__);
5788 if ((exp_connect_flags(exp) & OBD_CONNECT_MDS_MDS) &&
5789 !(exp_connect_flags(exp) & OBD_CONNECT_LIGHTWEIGHT)) {
5790 struct mdt_device *mdt = mdt_dev(exp->exp_obd->obd_lu_dev);
5792 if (atomic_dec_and_test(&mdt->mdt_mds_mds_conns))
5793 mdt_disable_slc(mdt);
5796 rc = server_disconnect_export(exp);
5798 CDEBUG(D_IOCTL, "server disconnect error: rc = %d\n", rc);
5800 tgt_grant_discard(exp);
5802 rc = mdt_export_cleanup(exp);
5803 nodemap_del_member(exp);
5804 class_export_put(exp);
5808 /* mds_connect copy */
5809 static int mdt_obd_connect(const struct lu_env *env,
5810 struct obd_export **exp, struct obd_device *obd,
5811 struct obd_uuid *cluuid,
5812 struct obd_connect_data *data,
5815 struct obd_export *lexp;
5816 struct lustre_handle conn = { 0 };
5817 struct mdt_device *mdt;
5819 lnet_nid_t *client_nid = localdata;
5822 LASSERT(env != NULL);
5823 LASSERT(data != NULL);
5825 if (!exp || !obd || !cluuid)
5828 mdt = mdt_dev(obd->obd_lu_dev);
5830 if ((data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
5831 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
5832 atomic_inc(&mdt->mdt_mds_mds_conns);
5833 mdt_enable_slc(mdt);
5837 * first, check whether the stack is ready to handle requests
5838 * XXX: probably not very appropriate method is used now
5839 * at some point we should find a better one
5841 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) &&
5842 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) &&
5843 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
5844 rc = obd_get_info(env, mdt->mdt_child_exp,
5845 sizeof(KEY_OSP_CONNECTED),
5846 KEY_OSP_CONNECTED, NULL, NULL);
5849 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
5852 rc = class_connect(&conn, obd, cluuid);
5856 lexp = class_conn2export(&conn);
5857 LASSERT(lexp != NULL);
5859 rc = nodemap_add_member(*client_nid, lexp);
5860 if (rc != 0 && rc != -EEXIST)
5863 rc = mdt_connect_internal(env, lexp, mdt, data, false);
5865 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
5868 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5869 rc = tgt_client_new(env, lexp);
5871 mdt_export_stats_init(obd, lexp, localdata);
5875 class_disconnect(lexp);
5876 nodemap_del_member(lexp);
5880 /* Because we do not want this export to be evicted by pinger,
5881 * let's not add this export to the timed chain list. */
5882 if (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) {
5883 spin_lock(&lexp->exp_obd->obd_dev_lock);
5884 list_del_init(&lexp->exp_obd_chain_timed);
5885 spin_unlock(&lexp->exp_obd->obd_dev_lock);
5892 static int mdt_obd_reconnect(const struct lu_env *env,
5893 struct obd_export *exp, struct obd_device *obd,
5894 struct obd_uuid *cluuid,
5895 struct obd_connect_data *data,
5898 lnet_nid_t *client_nid = localdata;
5902 if (exp == NULL || obd == NULL || cluuid == NULL)
5905 rc = nodemap_add_member(*client_nid, exp);
5906 if (rc != 0 && rc != -EEXIST)
5909 rc = mdt_connect_internal(env, exp, mdt_dev(obd->obd_lu_dev), data,
5912 mdt_export_stats_init(obd, exp, localdata);
5914 nodemap_del_member(exp);
5919 /* FIXME: Can we avoid using these two interfaces? */
5920 static int mdt_init_export(struct obd_export *exp)
5922 struct mdt_export_data *med = &exp->exp_mdt_data;
5926 INIT_LIST_HEAD(&med->med_open_head);
5927 spin_lock_init(&med->med_open_lock);
5928 spin_lock(&exp->exp_lock);
5929 exp->exp_connecting = 1;
5930 spin_unlock(&exp->exp_lock);
5932 /* self-export doesn't need client data and ldlm initialization */
5933 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5934 &exp->exp_client_uuid)))
5937 rc = tgt_client_alloc(exp);
5941 rc = ldlm_init_export(exp);
5948 tgt_client_free(exp);
5950 CERROR("%s: Failed to initialize export: rc = %d\n",
5951 exp->exp_obd->obd_name, rc);
5955 static int mdt_destroy_export(struct obd_export *exp)
5959 target_destroy_export(exp);
5960 /* destroy can be called from failed obd_setup, so
5961 * checking uuid is safer than obd_self_export */
5962 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5963 &exp->exp_client_uuid)))
5966 ldlm_destroy_export(exp);
5967 tgt_client_free(exp);
5969 LASSERT(list_empty(&exp->exp_outstanding_replies));
5970 LASSERT(list_empty(&exp->exp_mdt_data.med_open_head));
5973 * discard grants once we're sure no more
5974 * interaction with the client is possible
5976 tgt_grant_discard(exp);
5977 if (exp_connect_flags(exp) & OBD_CONNECT_GRANT)
5978 exp->exp_obd->u.obt.obt_lut->lut_tgd.tgd_tot_granted_clients--;
5980 if (!(exp->exp_flags & OBD_OPT_FORCE))
5981 tgt_grant_sanity_check(exp->exp_obd, __func__);
5986 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
5987 struct linkea_data *ldata)
5991 LASSERT(ldata->ld_buf->lb_buf != NULL);
5993 if (!mdt_object_exists(mdt_obj))
5996 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5997 ldata->ld_buf, XATTR_NAME_LINK);
5998 if (rc == -ERANGE) {
5999 /* Buf was too small, figure out what we need. */
6000 lu_buf_free(ldata->ld_buf);
6001 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6002 ldata->ld_buf, XATTR_NAME_LINK);
6005 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
6006 if (ldata->ld_buf->lb_buf == NULL)
6008 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6009 ldata->ld_buf, XATTR_NAME_LINK);
6014 return linkea_init_with_rec(ldata);
6018 * Given an MDT object, try to look up the full path to the object.
6019 * Part of the MDT layer implementation of lfs fid2path.
6021 * \param[in] info Per-thread common data shared by MDT level handlers.
6022 * \param[in] obj Object to do path lookup of
6023 * \param[in,out] fp User-provided struct to store path information
6024 * \param[in] root_fid Root FID of current path should reach
6026 * \retval 0 Lookup successful, path information stored in fp
6027 * \retval -EAGAIN Lookup failed, usually because object is being moved
6028 * \retval negative errno if there was a problem
6030 static int mdt_path_current(struct mdt_thread_info *info,
6031 struct mdt_object *obj,
6032 struct getinfo_fid2path *fp,
6033 struct lu_fid *root_fid)
6035 struct mdt_device *mdt = info->mti_mdt;
6036 struct mdt_object *mdt_obj;
6037 struct link_ea_header *leh;
6038 struct link_ea_entry *lee;
6039 struct lu_name *tmpname = &info->mti_name;
6040 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
6041 struct lu_buf *buf = &info->mti_big_buf;
6044 struct linkea_data ldata = { NULL };
6049 /* temp buffer for path element, the buffer will be finally freed
6050 * in mdt_thread_info_fini */
6051 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
6052 if (buf->lb_buf == NULL)
6056 ptr = fp->gf_u.gf_path + fp->gf_pathlen - 1;
6059 *tmpfid = fp->gf_fid = *mdt_object_fid(obj);
6061 while (!lu_fid_eq(root_fid, &fp->gf_fid)) {
6062 struct lu_buf lmv_buf;
6064 if (!lu_fid_eq(root_fid, &mdt->mdt_md_root_fid) &&
6065 lu_fid_eq(&mdt->mdt_md_root_fid, &fp->gf_fid))
6066 GOTO(out, rc = -ENOENT);
6068 if (lu_fid_eq(mdt_object_fid(obj), tmpfid)) {
6070 mdt_object_get(info->mti_env, mdt_obj);
6072 mdt_obj = mdt_object_find(info->mti_env, mdt, tmpfid);
6073 if (IS_ERR(mdt_obj))
6074 GOTO(out, rc = PTR_ERR(mdt_obj));
6077 if (!mdt_object_exists(mdt_obj)) {
6078 mdt_object_put(info->mti_env, mdt_obj);
6079 GOTO(out, rc = -ENOENT);
6082 if (mdt_object_remote(mdt_obj)) {
6083 mdt_object_put(info->mti_env, mdt_obj);
6084 GOTO(remote_out, rc = -EREMOTE);
6087 rc = mdt_links_read(info, mdt_obj, &ldata);
6089 mdt_object_put(info->mti_env, mdt_obj);
6094 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
6095 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
6096 /* If set, use link #linkno for path lookup, otherwise use
6097 link #0. Only do this for the final path element. */
6098 if (first && fp->gf_linkno < leh->leh_reccount) {
6100 for (count = 0; count < fp->gf_linkno; count++) {
6101 lee = (struct link_ea_entry *)
6102 ((char *)lee + reclen);
6103 linkea_entry_unpack(lee, &reclen, tmpname,
6106 if (fp->gf_linkno < leh->leh_reccount - 1)
6107 /* indicate to user there are more links */
6111 lmv_buf.lb_buf = info->mti_xattr_buf;
6112 lmv_buf.lb_len = sizeof(info->mti_xattr_buf);
6113 /* Check if it is slave stripes */
6114 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6115 &lmv_buf, XATTR_NAME_LMV);
6116 mdt_object_put(info->mti_env, mdt_obj);
6118 union lmv_mds_md *lmm = lmv_buf.lb_buf;
6120 /* For slave stripes, get its master */
6121 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE) {
6122 fp->gf_fid = *tmpfid;
6125 } else if (rc < 0 && rc != -ENODATA) {
6131 /* Pack the name in the end of the buffer */
6132 ptr -= tmpname->ln_namelen;
6133 if (ptr - 1 <= fp->gf_u.gf_path)
6134 GOTO(out, rc = -EOVERFLOW);
6135 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
6138 /* keep the last resolved fid to the client, so the
6139 * client will build the left path on another MDT for
6141 fp->gf_fid = *tmpfid;
6147 ptr++; /* skip leading / */
6148 memmove(fp->gf_u.gf_path, ptr,
6149 fp->gf_u.gf_path + fp->gf_pathlen - ptr);
6156 * Given an MDT object, use mdt_path_current to get the path.
6157 * Essentially a wrapper to retry mdt_path_current a set number of times
6158 * if -EAGAIN is returned (usually because an object is being moved).
6160 * Part of the MDT layer implementation of lfs fid2path.
6162 * \param[in] info Per-thread common data shared by mdt level handlers.
6163 * \param[in] obj Object to do path lookup of
6164 * \param[in,out] fp User-provided struct for arguments and to store path
6167 * \retval 0 Lookup successful, path information stored in fp
6168 * \retval negative errno if there was a problem
6170 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
6171 struct getinfo_fid2path *fp, struct lu_fid *root_fid)
6173 struct mdt_device *mdt = info->mti_mdt;
6178 if (fp->gf_pathlen < 3)
6181 if (root_fid == NULL)
6182 root_fid = &mdt->mdt_md_root_fid;
6184 if (lu_fid_eq(root_fid, mdt_object_fid(obj))) {
6185 fp->gf_u.gf_path[0] = '\0';
6189 /* Retry multiple times in case file is being moved */
6190 while (tries-- && rc == -EAGAIN)
6191 rc = mdt_path_current(info, obj, fp, root_fid);
6197 * Get the full path of the provided FID, as of changelog record recno.
6199 * This checks sanity and looks up object for user provided FID
6200 * before calling the actual path lookup code.
6202 * Part of the MDT layer implementation of lfs fid2path.
6204 * \param[in] info Per-thread common data shared by mdt level handlers.
6205 * \param[in,out] fp User-provided struct for arguments and to store path
6208 * \retval 0 Lookup successful, path information and recno stored in fp
6209 * \retval -ENOENT, object does not exist
6210 * \retval negative errno if there was a problem
6212 static int mdt_fid2path(struct mdt_thread_info *info,
6213 struct lu_fid *root_fid,
6214 struct getinfo_fid2path *fp)
6216 struct mdt_device *mdt = info->mti_mdt;
6217 struct mdt_object *obj;
6221 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
6222 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
6224 if (!fid_is_sane(&fp->gf_fid))
6227 if (!fid_is_namespace_visible(&fp->gf_fid)) {
6228 CDEBUG(D_INFO, "%s: "DFID" is invalid, f_seq should be >= %#llx"
6229 ", or f_oid != 0, or f_ver == 0\n", mdt_obd_name(mdt),
6230 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
6234 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
6237 CDEBUG(D_IOCTL, "cannot find "DFID": rc = %d\n",
6238 PFID(&fp->gf_fid), rc);
6242 if (mdt_object_remote(obj))
6244 else if (!mdt_object_exists(obj))
6250 mdt_object_put(info->mti_env, obj);
6251 CDEBUG(D_IOCTL, "nonlocal object "DFID": rc = %d\n",
6252 PFID(&fp->gf_fid), rc);
6256 rc = mdt_path(info, obj, fp, root_fid);
6258 CDEBUG(D_INFO, "fid "DFID", path %s recno %#llx linkno %u\n",
6259 PFID(&fp->gf_fid), fp->gf_u.gf_path,
6260 fp->gf_recno, fp->gf_linkno);
6262 mdt_object_put(info->mti_env, obj);
6267 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key, int keylen,
6268 void *val, int vallen)
6270 struct getinfo_fid2path *fpout, *fpin;
6271 struct lu_fid *root_fid = NULL;
6274 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
6277 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
6278 lustre_swab_fid2path(fpin);
6280 memcpy(fpout, fpin, sizeof(*fpin));
6281 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
6284 if (keylen >= cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*fpin) +
6285 sizeof(struct lu_fid)) {
6286 /* client sent its root FID, which is normally fileset FID */
6287 root_fid = fpin->gf_u.gf_root_fid;
6288 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
6289 lustre_swab_lu_fid(root_fid);
6291 if (root_fid != NULL && !fid_is_sane(root_fid))
6295 rc = mdt_fid2path(info, root_fid, fpout);
6299 int mdt_get_info(struct tgt_session_info *tsi)
6309 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
6311 CDEBUG(D_IOCTL, "No GETINFO key\n");
6312 RETURN(err_serious(-EFAULT));
6314 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
6317 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
6318 if (vallen == NULL) {
6319 CDEBUG(D_IOCTL, "%s: cannot get RMF_GETINFO_VALLEN buffer\n",
6320 tgt_name(tsi->tsi_tgt));
6321 RETURN(err_serious(-EFAULT));
6324 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
6326 rc = req_capsule_server_pack(tsi->tsi_pill);
6328 RETURN(err_serious(rc));
6330 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
6331 if (valout == NULL) {
6332 CDEBUG(D_IOCTL, "%s: cannot get get-info RPC out buffer\n",
6333 tgt_name(tsi->tsi_tgt));
6334 RETURN(err_serious(-EFAULT));
6337 if (KEY_IS(KEY_FID2PATH)) {
6338 struct mdt_thread_info *info = tsi2mdt_info(tsi);
6340 rc = mdt_rpc_fid2path(info, key, keylen, valout, *vallen);
6341 mdt_thread_info_fini(info);
6348 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
6350 struct obd_ioctl_data *data = karg;
6353 struct mdt_object *obj;
6354 struct mdt_lock_handle *lh;
6358 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
6359 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
6362 fid = (struct lu_fid *)data->ioc_inlbuf1;
6364 if (!fid_is_sane(fid))
6367 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
6369 lh = &mti->mti_lh[MDT_LH_PARENT];
6370 mdt_lock_reg_init(lh, LCK_CR);
6372 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
6374 RETURN(PTR_ERR(obj));
6376 if (mdt_object_remote(obj)) {
6379 * before calling version get the correct MDS should be
6380 * fid, this is error to find remote object here
6382 CERROR("nonlocal object "DFID"\n", PFID(fid));
6383 } else if (!mdt_object_exists(obj)) {
6384 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
6387 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
6388 *(__u64 *)data->ioc_inlbuf2 = version;
6391 mdt_object_unlock_put(mti, obj, lh, 1);
6395 /* ioctls on obd dev */
6396 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
6397 void *karg, void __user *uarg)
6400 struct obd_device *obd = exp->exp_obd;
6401 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
6402 struct dt_device *dt = mdt->mdt_bottom;
6406 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
6407 rc = lu_env_init(&env, LCT_MD_THREAD);
6413 rc = mdt_device_sync(&env, mdt);
6415 case OBD_IOC_SET_READONLY:
6416 rc = dt_sync(&env, dt);
6418 rc = dt_ro(&env, dt);
6420 case OBD_IOC_ABORT_RECOVERY:
6421 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
6422 obd->obd_abort_recovery = 1;
6423 target_stop_recovery_thread(obd);
6426 case OBD_IOC_CHANGELOG_REG:
6427 case OBD_IOC_CHANGELOG_DEREG:
6428 case OBD_IOC_CHANGELOG_CLEAR:
6429 rc = mdt->mdt_child->md_ops->mdo_iocontrol(&env,
6433 case OBD_IOC_START_LFSCK: {
6434 struct md_device *next = mdt->mdt_child;
6435 struct obd_ioctl_data *data = karg;
6436 struct lfsck_start_param lsp;
6438 if (unlikely(data == NULL)) {
6443 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
6444 lsp.lsp_index_valid = 0;
6445 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
6448 case OBD_IOC_STOP_LFSCK: {
6449 struct md_device *next = mdt->mdt_child;
6450 struct obd_ioctl_data *data = karg;
6451 struct lfsck_stop stop;
6453 stop.ls_status = LS_STOPPED;
6454 /* Old lfsck utils may pass NULL @stop. */
6455 if (data->ioc_inlbuf1 == NULL)
6459 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
6461 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
6464 case OBD_IOC_QUERY_LFSCK: {
6465 struct md_device *next = mdt->mdt_child;
6466 struct obd_ioctl_data *data = karg;
6468 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0,
6472 case OBD_IOC_GET_OBJ_VERSION: {
6473 struct mdt_thread_info *mti;
6474 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6475 memset(mti, 0, sizeof *mti);
6476 mti->mti_env = &env;
6480 rc = mdt_ioc_version_get(mti, karg);
6483 case OBD_IOC_CATLOGLIST: {
6484 struct mdt_thread_info *mti;
6486 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6487 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
6488 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
6489 &mti->mti_tmp_fid1);
6494 CERROR("%s: Not supported cmd = %d, rc = %d\n",
6495 mdt_obd_name(mdt), cmd, rc);
6502 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
6504 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
6508 if (!mdt->mdt_skip_lfsck && !mdt->mdt_bottom->dd_rdonly) {
6509 struct lfsck_start_param lsp;
6511 lsp.lsp_start = NULL;
6512 lsp.lsp_index_valid = 0;
6513 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
6514 OBD_IOC_START_LFSCK,
6516 if (rc != 0 && rc != -EALREADY)
6517 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
6518 mdt_obd_name(mdt), rc);
6521 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
6525 static int mdt_obd_postrecov(struct obd_device *obd)
6530 rc = lu_env_init(&env, LCT_MD_THREAD);
6533 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
6538 static struct obd_ops mdt_obd_device_ops = {
6539 .o_owner = THIS_MODULE,
6540 .o_set_info_async = mdt_obd_set_info_async,
6541 .o_connect = mdt_obd_connect,
6542 .o_reconnect = mdt_obd_reconnect,
6543 .o_disconnect = mdt_obd_disconnect,
6544 .o_init_export = mdt_init_export,
6545 .o_destroy_export = mdt_destroy_export,
6546 .o_iocontrol = mdt_iocontrol,
6547 .o_postrecov = mdt_obd_postrecov,
6548 /* Data-on-MDT IO methods */
6549 .o_preprw = mdt_obd_preprw,
6550 .o_commitrw = mdt_obd_commitrw,
6553 static struct lu_device* mdt_device_fini(const struct lu_env *env,
6554 struct lu_device *d)
6556 struct mdt_device *m = mdt_dev(d);
6563 static struct lu_device *mdt_device_free(const struct lu_env *env,
6564 struct lu_device *d)
6566 struct mdt_device *m = mdt_dev(d);
6569 lu_device_fini(&m->mdt_lu_dev);
6575 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
6576 struct lu_device_type *t,
6577 struct lustre_cfg *cfg)
6579 struct lu_device *l;
6580 struct mdt_device *m;
6587 rc = mdt_init0(env, m, t, cfg);
6589 mdt_device_free(env, l);
6594 l = ERR_PTR(-ENOMEM);
6598 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
6599 LU_KEY_INIT(mdt, struct mdt_thread_info);
6601 static void mdt_key_fini(const struct lu_context *ctx,
6602 struct lu_context_key *key, void* data)
6604 struct mdt_thread_info *info = data;
6606 if (info->mti_big_lmm) {
6607 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
6608 info->mti_big_lmm = NULL;
6609 info->mti_big_lmmsize = 0;
6612 if (info->mti_big_acl) {
6613 OBD_FREE_LARGE(info->mti_big_acl, info->mti_big_aclsize);
6614 info->mti_big_acl = NULL;
6615 info->mti_big_aclsize = 0;
6621 /* context key: mdt_thread_key */
6622 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
6624 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
6626 return lu_ucred(info->mti_env);
6629 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
6631 return lu_ucred_check(info->mti_env);
6635 * Enable/disable COS (Commit On Sharing).
6637 * Set/Clear the COS flag in mdt options.
6639 * \param mdt mdt device
6640 * \param val 0 disables COS, other values enable COS
6642 void mdt_enable_cos(struct mdt_device *mdt, bool val)
6647 mdt->mdt_opts.mo_cos = val;
6648 rc = lu_env_init(&env, LCT_LOCAL);
6649 if (unlikely(rc != 0)) {
6650 CWARN("%s: lu_env initialization failed, cannot "
6651 "sync: rc = %d\n", mdt_obd_name(mdt), rc);
6654 mdt_device_sync(&env, mdt);
6659 * Check COS (Commit On Sharing) status.
6661 * Return COS flag status.
6663 * \param mdt mdt device
6665 int mdt_cos_is_enabled(struct mdt_device *mdt)
6667 return mdt->mdt_opts.mo_cos != 0;
6670 static struct lu_device_type_operations mdt_device_type_ops = {
6671 .ldto_device_alloc = mdt_device_alloc,
6672 .ldto_device_free = mdt_device_free,
6673 .ldto_device_fini = mdt_device_fini
6676 static struct lu_device_type mdt_device_type = {
6677 .ldt_tags = LU_DEVICE_MD,
6678 .ldt_name = LUSTRE_MDT_NAME,
6679 .ldt_ops = &mdt_device_type_ops,
6680 .ldt_ctx_tags = LCT_MD_THREAD
6683 static int __init mdt_init(void)
6687 CLASSERT(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") ==
6688 FID_NOBRACE_LEN + 1);
6689 CLASSERT(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") ==
6691 rc = lu_kmem_init(mdt_caches);
6695 rc = mds_mod_init();
6699 rc = class_register_type(&mdt_obd_device_ops, NULL, true, NULL,
6700 LUSTRE_MDT_NAME, &mdt_device_type);
6705 lu_kmem_fini(mdt_caches);
6712 static void __exit mdt_exit(void)
6714 class_unregister_type(LUSTRE_MDT_NAME);
6716 lu_kmem_fini(mdt_caches);
6719 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
6720 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
6721 MODULE_VERSION(LUSTRE_VERSION_STRING);
6722 MODULE_LICENSE("GPL");
6724 module_init(mdt_init);
6725 module_exit(mdt_exit);