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);
97 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
99 static const struct lu_object_operations mdt_obj_ops;
101 /* Slab for MDT object allocation */
102 static struct kmem_cache *mdt_object_kmem;
104 /* For HSM restore handles */
105 struct kmem_cache *mdt_hsm_cdt_kmem;
107 /* For HSM request handles */
108 struct kmem_cache *mdt_hsm_car_kmem;
110 static struct lu_kmem_descr mdt_caches[] = {
112 .ckd_cache = &mdt_object_kmem,
113 .ckd_name = "mdt_obj",
114 .ckd_size = sizeof(struct mdt_object)
117 .ckd_cache = &mdt_hsm_cdt_kmem,
118 .ckd_name = "mdt_cdt_restore_handle",
119 .ckd_size = sizeof(struct cdt_restore_handle)
122 .ckd_cache = &mdt_hsm_car_kmem,
123 .ckd_name = "mdt_cdt_agent_req",
124 .ckd_size = sizeof(struct cdt_agent_req)
131 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag)
135 return rep->lock_policy_res1 & op_flag;
138 void mdt_clear_disposition(struct mdt_thread_info *info,
139 struct ldlm_reply *rep, __u64 op_flag)
142 info->mti_opdata &= ~op_flag;
143 tgt_opdata_clear(info->mti_env, op_flag);
146 rep->lock_policy_res1 &= ~op_flag;
149 void mdt_set_disposition(struct mdt_thread_info *info,
150 struct ldlm_reply *rep, __u64 op_flag)
153 info->mti_opdata |= op_flag;
154 tgt_opdata_set(info->mti_env, op_flag);
157 rep->lock_policy_res1 |= op_flag;
160 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm)
162 lh->mlh_pdo_hash = 0;
163 lh->mlh_reg_mode = lm;
164 lh->mlh_rreg_mode = lm;
165 lh->mlh_type = MDT_REG_LOCK;
168 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
169 const struct lu_name *lname)
171 lh->mlh_reg_mode = lock_mode;
172 lh->mlh_pdo_mode = LCK_MINMODE;
173 lh->mlh_rreg_mode = lock_mode;
174 lh->mlh_type = MDT_PDO_LOCK;
176 if (lu_name_is_valid(lname)) {
177 lh->mlh_pdo_hash = ll_full_name_hash(NULL, lname->ln_name,
179 /* XXX Workaround for LU-2856
181 * Zero is a valid return value of full_name_hash, but
182 * several users of mlh_pdo_hash assume a non-zero
183 * hash value. We therefore map zero onto an
184 * arbitrary, but consistent value (1) to avoid
185 * problems further down the road. */
186 if (unlikely(lh->mlh_pdo_hash == 0))
187 lh->mlh_pdo_hash = 1;
189 lh->mlh_pdo_hash = 0;
193 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
194 struct mdt_lock_handle *lh)
200 * Any dir access needs couple of locks:
202 * 1) on part of dir we gonna take lookup/modify;
204 * 2) on whole dir to protect it from concurrent splitting and/or to
205 * flush client's cache for readdir().
207 * so, for a given mode and object this routine decides what lock mode
208 * to use for lock #2:
210 * 1) if caller's gonna lookup in dir then we need to protect dir from
211 * being splitted only - LCK_CR
213 * 2) if caller's gonna modify dir then we need to protect dir from
214 * being splitted and to flush cache - LCK_CW
216 * 3) if caller's gonna modify dir and that dir seems ready for
217 * splitting then we need to protect it from any type of access
218 * (lookup/modify/split) - LCK_EX --bzzz
221 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
222 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
225 * Ask underlaying level its opinion about preferable PDO lock mode
226 * having access type passed as regular lock mode:
228 * - MDL_MINMODE means that lower layer does not want to specify lock
231 * - MDL_NL means that no PDO lock should be taken. This is used in some
232 * cases. Say, for non-splittable directories no need to use PDO locks
235 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
236 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
238 if (mode != MDL_MINMODE) {
239 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
242 * Lower layer does not want to specify locking mode. We do it
243 * our selves. No special protection is needed, just flush
244 * client's cache on modification and allow concurrent
247 switch (lh->mlh_reg_mode) {
249 lh->mlh_pdo_mode = LCK_EX;
252 lh->mlh_pdo_mode = LCK_CR;
255 lh->mlh_pdo_mode = LCK_CW;
258 CERROR("Not expected lock type (0x%x)\n",
259 (int)lh->mlh_reg_mode);
264 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
268 static int mdt_lookup_fileset(struct mdt_thread_info *info, const char *fileset,
271 struct mdt_device *mdt = info->mti_mdt;
272 struct lu_name *lname = &info->mti_name;
274 struct mdt_object *parent;
278 LASSERT(!info->mti_cross_ref);
280 OBD_ALLOC(name, NAME_MAX + 1);
283 lname->ln_name = name;
286 * We may want to allow this to mount a completely separate
287 * fileset from the MDT in the future, but keeping it to
288 * ROOT/ only for now avoid potential security issues.
290 *fid = mdt->mdt_md_root_fid;
292 while (rc == 0 && fileset != NULL && *fileset != '\0') {
293 const char *s1 = fileset;
299 while (*s2 != '/' && *s2 != '\0')
307 lname->ln_namelen = s2 - s1;
308 if (lname->ln_namelen > NAME_MAX) {
313 /* reject .. as a path component */
314 if (lname->ln_namelen == 2 &&
315 strncmp(s1, "..", 2) == 0) {
320 strncpy(name, s1, lname->ln_namelen);
321 name[lname->ln_namelen] = '\0';
323 parent = mdt_object_find(info->mti_env, mdt, fid);
324 if (IS_ERR(parent)) {
325 rc = PTR_ERR(parent);
328 /* Only got the fid of this obj by name */
330 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
331 fid, &info->mti_spec);
332 mdt_object_put(info->mti_env, parent);
335 parent = mdt_object_find(info->mti_env, mdt, fid);
337 rc = PTR_ERR(parent);
339 mode = lu_object_attr(&parent->mot_obj);
340 mdt_object_put(info->mti_env, parent);
346 OBD_FREE(name, NAME_MAX + 1);
351 static int mdt_get_root(struct tgt_session_info *tsi)
353 struct mdt_thread_info *info = tsi2mdt_info(tsi);
354 struct mdt_device *mdt = info->mti_mdt;
355 struct mdt_body *repbody;
356 char *fileset = NULL, *buffer = NULL;
358 struct obd_export *exp = info->mti_exp;
359 char *nodemap_fileset;
363 rc = mdt_check_ucred(info);
365 GOTO(out, rc = err_serious(rc));
367 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GET_ROOT_PACK))
368 GOTO(out, rc = err_serious(-ENOMEM));
370 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
371 if (req_capsule_get_size(info->mti_pill, &RMF_NAME, RCL_CLIENT) > 0) {
372 fileset = req_capsule_client_get(info->mti_pill, &RMF_NAME);
374 GOTO(out, rc = err_serious(-EFAULT));
377 nodemap_fileset = nodemap_get_fileset(exp->exp_target_data.ted_nodemap);
378 if (nodemap_fileset && nodemap_fileset[0]) {
379 CDEBUG(D_INFO, "nodemap fileset is %s\n", nodemap_fileset);
381 /* consider fileset from client as a sub-fileset
382 * of the nodemap one */
383 OBD_ALLOC(buffer, PATH_MAX + 1);
385 GOTO(out, rc = err_serious(-ENOMEM));
386 if (snprintf(buffer, PATH_MAX + 1, "%s/%s",
387 nodemap_fileset, fileset) >= PATH_MAX + 1)
388 GOTO(out, rc = err_serious(-EINVAL));
391 /* enforce fileset as specified in the nodemap */
392 fileset = nodemap_fileset;
397 CDEBUG(D_INFO, "Getting fileset %s\n", fileset);
398 rc = mdt_lookup_fileset(info, fileset, &repbody->mbo_fid1);
400 GOTO(out, rc = err_serious(rc));
402 repbody->mbo_fid1 = mdt->mdt_md_root_fid;
404 repbody->mbo_valid |= OBD_MD_FLID;
408 mdt_thread_info_fini(info);
410 OBD_FREE(buffer, PATH_MAX+1);
414 static int mdt_statfs(struct tgt_session_info *tsi)
416 struct ptlrpc_request *req = tgt_ses_req(tsi);
417 struct mdt_thread_info *info = tsi2mdt_info(tsi);
418 struct mdt_device *mdt = info->mti_mdt;
419 struct tg_grants_data *tgd = &mdt->mdt_lut.lut_tgd;
420 struct ptlrpc_service_part *svcpt;
421 struct obd_statfs *osfs;
426 svcpt = req->rq_rqbd->rqbd_svcpt;
428 /* This will trigger a watchdog timeout */
429 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
430 (MDT_SERVICE_WATCHDOG_FACTOR *
431 at_get(&svcpt->scp_at_estimate)) + 1);
433 rc = mdt_check_ucred(info);
435 GOTO(out, rc = err_serious(rc));
437 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
438 GOTO(out, rc = err_serious(-ENOMEM));
440 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
442 GOTO(out, rc = -EPROTO);
444 rc = tgt_statfs_internal(tsi->tsi_env, &mdt->mdt_lut, osfs,
445 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
450 /* at least try to account for cached pages. its still racy and
451 * might be under-reporting if clients haven't announced their
452 * caches with brw recently */
453 CDEBUG(D_SUPER | D_CACHE, "blocks cached %llu granted %llu"
454 " pending %llu free %llu avail %llu\n",
455 tgd->tgd_tot_dirty, tgd->tgd_tot_granted,
456 tgd->tgd_tot_pending,
457 osfs->os_bfree << tgd->tgd_blockbits,
458 osfs->os_bavail << tgd->tgd_blockbits);
460 osfs->os_bavail -= min_t(u64, osfs->os_bavail,
461 ((tgd->tgd_tot_dirty + tgd->tgd_tot_pending +
462 osfs->os_bsize - 1) >> tgd->tgd_blockbits));
464 tgt_grant_sanity_check(mdt->mdt_lu_dev.ld_obd, __func__);
465 CDEBUG(D_CACHE, "%llu blocks: %llu free, %llu avail; "
466 "%llu objects: %llu free; state %x\n",
467 osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
468 osfs->os_files, osfs->os_ffree, osfs->os_state);
470 if (!exp_grant_param_supp(tsi->tsi_exp) &&
471 tgd->tgd_blockbits > COMPAT_BSIZE_SHIFT) {
472 /* clients which don't support OBD_CONNECT_GRANT_PARAM
473 * should not see a block size > page size, otherwise
474 * cl_lost_grant goes mad. Therefore, we emulate a 4KB (=2^12)
475 * block size which is the biggest block size known to work
476 * with all client's page size. */
477 osfs->os_blocks <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
478 osfs->os_bfree <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
479 osfs->os_bavail <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
480 osfs->os_bsize = 1 << COMPAT_BSIZE_SHIFT;
483 mdt_counter_incr(req, LPROC_MDT_STATFS);
485 mdt_thread_info_fini(info);
490 * Pack size attributes into the reply.
492 int mdt_pack_size2body(struct mdt_thread_info *info,
493 const struct lu_fid *fid, bool dom_lock)
496 struct md_attr *ma = &info->mti_attr;
501 LASSERT(ma->ma_attr.la_valid & LA_MODE);
503 if (!S_ISREG(ma->ma_attr.la_mode) ||
504 !(ma->ma_valid & MA_LOV && ma->ma_lmm != NULL))
507 dom_stripe = mdt_lmm_dom_entry(ma->ma_lmm);
508 /* no DoM stripe, no size in reply */
509 if (dom_stripe == LMM_NO_DOM)
512 /* no DoM lock, no size in reply */
516 /* Either DoM lock exists or LMM has only DoM stripe then
517 * return size on body. */
518 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
520 mdt_dom_object_size(info->mti_env, info->mti_mdt, fid, b, dom_lock);
524 #ifdef CONFIG_FS_POSIX_ACL
526 * Pack ACL data into the reply. UIDs/GIDs are mapped and filtered by nodemap.
528 * \param info thread info object
529 * \param repbody reply to pack ACLs into
530 * \param o mdt object of file to examine
531 * \param nodemap nodemap of client to reply to
533 * \retval -errno error getting or parsing ACL from disk
535 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
536 struct mdt_object *o, struct lu_nodemap *nodemap)
538 const struct lu_env *env = info->mti_env;
539 struct md_object *next = mdt_object_child(o);
540 struct lu_buf *buf = &info->mti_buf;
541 struct mdt_device *mdt = info->mti_mdt;
542 struct req_capsule *pill = info->mti_pill;
547 buf->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
548 buf->lb_len = req_capsule_get_size(pill, &RMF_ACL, RCL_SERVER);
549 if (buf->lb_len == 0)
553 rc = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_ACCESS);
555 if (rc == -ENODATA) {
556 repbody->mbo_aclsize = 0;
557 repbody->mbo_valid |= OBD_MD_FLACL;
559 } else if (rc == -EOPNOTSUPP) {
563 exp_connect_large_acl(info->mti_exp) &&
564 buf->lb_buf != info->mti_big_acl) {
565 if (info->mti_big_acl == NULL) {
566 OBD_ALLOC_LARGE(info->mti_big_acl,
567 mdt->mdt_max_ea_size);
568 if (info->mti_big_acl == NULL) {
569 CERROR("%s: unable to grow "
572 PFID(mdt_object_fid(o)));
576 info->mti_big_aclsize =
577 mdt->mdt_max_ea_size;
580 CDEBUG(D_INODE, "%s: grow the "DFID
581 " ACL buffer to size %d\n",
583 PFID(mdt_object_fid(o)),
584 mdt->mdt_max_ea_size);
586 buf->lb_buf = info->mti_big_acl;
587 buf->lb_len = info->mti_big_aclsize;
592 CERROR("%s: unable to read "DFID" ACL: rc = %d\n",
593 mdt_obd_name(mdt), PFID(mdt_object_fid(o)), rc);
602 acl_buflen = req_capsule_get_size(pill, &RMF_ACL, RCL_SERVER);
603 if (acl_buflen >= rc)
606 /* If LOV/LMA EA is small, we can reuse part of their buffer */
607 client = ptlrpc_req_get_repsize(pill->rc_req);
608 server = lustre_packed_msg_size(pill->rc_req->rq_repmsg);
609 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER)) {
610 lmm_buflen = req_capsule_get_size(pill, &RMF_MDT_MD,
612 lmmsize = repbody->mbo_eadatasize;
615 if (client < server - acl_buflen - lmm_buflen + rc + lmmsize) {
616 CDEBUG(D_INODE, "%s: client prepared buffer size %d "
617 "is not big enough with the ACL size %d (%d)\n",
618 mdt_obd_name(mdt), client, rc,
619 server - acl_buflen - lmm_buflen + rc + lmmsize);
620 repbody->mbo_aclsize = 0;
621 repbody->mbo_valid &= ~OBD_MD_FLACL;
626 if (buf->lb_buf == info->mti_big_acl)
627 info->mti_big_acl_used = 1;
629 rc = nodemap_map_acl(nodemap, buf->lb_buf,
630 rc, NODEMAP_FS_TO_CLIENT);
631 /* if all ACLs mapped out, rc is still >= 0 */
633 CERROR("%s: nodemap_map_acl unable to parse "DFID
634 " ACL: rc = %d\n", mdt_obd_name(mdt),
635 PFID(mdt_object_fid(o)), rc);
636 repbody->mbo_aclsize = 0;
637 repbody->mbo_valid &= ~OBD_MD_FLACL;
639 repbody->mbo_aclsize = rc;
640 repbody->mbo_valid |= OBD_MD_FLACL;
649 /* XXX Look into layout in MDT layer. */
650 static inline bool mdt_hsm_is_released(struct lov_mds_md *lmm)
652 struct lov_comp_md_v1 *comp_v1;
653 struct lov_mds_md *v1;
656 if (lmm->lmm_magic == LOV_MAGIC_COMP_V1) {
657 comp_v1 = (struct lov_comp_md_v1 *)lmm;
659 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
660 v1 = (struct lov_mds_md *)((char *)comp_v1 +
661 comp_v1->lcm_entries[i].lcme_offset);
662 /* We don't support partial release for now */
663 if (!(v1->lmm_pattern & LOV_PATTERN_F_RELEASED))
668 return (lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) ?
673 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
674 const struct lu_attr *attr, const struct lu_fid *fid)
676 struct md_attr *ma = &info->mti_attr;
677 struct obd_export *exp = info->mti_exp;
678 struct lu_nodemap *nodemap = NULL;
680 LASSERT(ma->ma_valid & MA_INODE);
682 if (attr->la_valid & LA_ATIME) {
683 b->mbo_atime = attr->la_atime;
684 b->mbo_valid |= OBD_MD_FLATIME;
686 if (attr->la_valid & LA_MTIME) {
687 b->mbo_mtime = attr->la_mtime;
688 b->mbo_valid |= OBD_MD_FLMTIME;
690 if (attr->la_valid & LA_CTIME) {
691 b->mbo_ctime = attr->la_ctime;
692 b->mbo_valid |= OBD_MD_FLCTIME;
694 if (attr->la_valid & LA_FLAGS) {
695 b->mbo_flags = attr->la_flags;
696 b->mbo_valid |= OBD_MD_FLFLAGS;
698 if (attr->la_valid & LA_NLINK) {
699 b->mbo_nlink = attr->la_nlink;
700 b->mbo_valid |= OBD_MD_FLNLINK;
702 if (attr->la_valid & (LA_UID|LA_GID)) {
703 nodemap = nodemap_get_from_exp(exp);
707 if (attr->la_valid & LA_UID) {
708 b->mbo_uid = nodemap_map_id(nodemap, NODEMAP_UID,
709 NODEMAP_FS_TO_CLIENT,
711 b->mbo_valid |= OBD_MD_FLUID;
713 if (attr->la_valid & LA_GID) {
714 b->mbo_gid = nodemap_map_id(nodemap, NODEMAP_GID,
715 NODEMAP_FS_TO_CLIENT,
717 b->mbo_valid |= OBD_MD_FLGID;
720 if (attr->la_valid & LA_PROJID) {
721 /* TODO, nodemap for project id */
722 b->mbo_projid = attr->la_projid;
723 b->mbo_valid |= OBD_MD_FLPROJID;
726 b->mbo_mode = attr->la_mode;
727 if (attr->la_valid & LA_MODE)
728 b->mbo_valid |= OBD_MD_FLMODE;
729 if (attr->la_valid & LA_TYPE)
730 b->mbo_valid |= OBD_MD_FLTYPE;
734 b->mbo_valid |= OBD_MD_FLID;
735 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, valid=%#llx\n",
736 PFID(fid), b->mbo_nlink, b->mbo_mode, b->mbo_valid);
739 if (!(attr->la_valid & LA_TYPE))
742 b->mbo_rdev = attr->la_rdev;
743 b->mbo_size = attr->la_size;
744 b->mbo_blocks = attr->la_blocks;
746 if (!S_ISREG(attr->la_mode)) {
747 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
748 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
749 /* means no objects are allocated on osts. */
750 LASSERT(!(ma->ma_valid & MA_LOV));
751 /* just ignore blocks occupied by extend attributes on MDS */
753 /* if no object is allocated on osts, the size on mds is valid.
755 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
756 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL) {
757 if (mdt_hsm_is_released(ma->ma_lmm)) {
758 /* A released file stores its size on MDS. */
759 /* But return 1 block for released file, unless tools
760 * like tar will consider it fully sparse. (LU-3864)
762 if (unlikely(b->mbo_size == 0))
766 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
767 } else if (info->mti_som_valid) { /* som is valid */
768 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
772 if (fid != NULL && (b->mbo_valid & OBD_MD_FLSIZE))
773 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
774 PFID(fid), (unsigned long long)b->mbo_size);
777 if (!IS_ERR_OR_NULL(nodemap))
778 nodemap_putref(nodemap);
781 static inline int mdt_body_has_lov(const struct lu_attr *la,
782 const struct mdt_body *body)
784 return (S_ISREG(la->la_mode) && (body->mbo_valid & OBD_MD_FLEASIZE)) ||
785 (S_ISDIR(la->la_mode) && (body->mbo_valid & OBD_MD_FLDIREA));
788 void mdt_client_compatibility(struct mdt_thread_info *info)
790 struct mdt_body *body;
791 struct ptlrpc_request *req = mdt_info_req(info);
792 struct obd_export *exp = req->rq_export;
793 struct md_attr *ma = &info->mti_attr;
794 struct lu_attr *la = &ma->ma_attr;
797 if (exp_connect_layout(exp))
798 /* the client can deal with 16-bit lmm_stripe_count */
801 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
803 if (!mdt_body_has_lov(la, body))
806 /* now we have a reply with a lov for a client not compatible with the
807 * layout lock so we have to clean the layout generation number */
808 if (S_ISREG(la->la_mode))
809 ma->ma_lmm->lmm_layout_gen = 0;
813 static int mdt_attr_get_eabuf_size(struct mdt_thread_info *info,
814 struct mdt_object *o)
816 const struct lu_env *env = info->mti_env;
819 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
828 /* Is it a directory? Let's check for the LMV as well */
829 if (S_ISDIR(lu_object_attr(&mdt_object_child(o)->mo_lu))) {
830 rc2 = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
834 rc2 = mo_xattr_get(env, mdt_object_child(o),
836 XATTR_NAME_DEFAULT_LMV);
838 if ((rc2 < 0 && rc2 != -ENODATA) || (rc2 > rc))
846 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
849 const struct lu_env *env = info->mti_env;
853 LASSERT(info->mti_big_lmm_used == 0);
854 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
858 /* big_lmm may need to be grown */
859 if (info->mti_big_lmmsize < rc) {
860 int size = size_roundup_power2(rc);
862 if (info->mti_big_lmmsize > 0) {
863 /* free old buffer */
864 LASSERT(info->mti_big_lmm);
865 OBD_FREE_LARGE(info->mti_big_lmm,
866 info->mti_big_lmmsize);
867 info->mti_big_lmm = NULL;
868 info->mti_big_lmmsize = 0;
871 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
872 if (info->mti_big_lmm == NULL)
874 info->mti_big_lmmsize = size;
876 LASSERT(info->mti_big_lmmsize >= rc);
878 info->mti_buf.lb_buf = info->mti_big_lmm;
879 info->mti_buf.lb_len = info->mti_big_lmmsize;
880 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
885 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
886 struct md_attr *ma, const char *name)
888 struct md_object *next = mdt_object_child(o);
889 struct lu_buf *buf = &info->mti_buf;
892 if (strcmp(name, XATTR_NAME_LOV) == 0) {
893 buf->lb_buf = ma->ma_lmm;
894 buf->lb_len = ma->ma_lmm_size;
895 LASSERT(!(ma->ma_valid & MA_LOV));
896 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
897 buf->lb_buf = ma->ma_lmv;
898 buf->lb_len = ma->ma_lmv_size;
899 LASSERT(!(ma->ma_valid & MA_LMV));
900 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
901 buf->lb_buf = ma->ma_lmv;
902 buf->lb_len = ma->ma_lmv_size;
903 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
908 rc = mo_xattr_get(info->mti_env, next, buf, name);
912 if (strcmp(name, XATTR_NAME_LOV) == 0) {
913 if (info->mti_big_lmm_used)
914 ma->ma_lmm = info->mti_big_lmm;
916 /* NOT return LOV EA with hole to old client. */
917 if (unlikely(le32_to_cpu(ma->ma_lmm->lmm_pattern) &
918 LOV_PATTERN_F_HOLE) &&
919 !(exp_connect_flags(info->mti_exp) &
920 OBD_CONNECT_LFSCK)) {
923 ma->ma_lmm_size = rc;
924 ma->ma_valid |= MA_LOV;
926 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
927 if (info->mti_big_lmm_used)
928 ma->ma_lmv = info->mti_big_lmm;
930 ma->ma_lmv_size = rc;
931 ma->ma_valid |= MA_LMV;
932 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
933 ma->ma_lmv_size = rc;
934 ma->ma_valid |= MA_LMV_DEF;
937 /* Update mdt_max_mdsize so all clients will be aware that */
938 if (info->mti_mdt->mdt_max_mdsize < rc)
939 info->mti_mdt->mdt_max_mdsize = rc;
942 } else if (rc == -ENODATA) {
945 } else if (rc == -ERANGE) {
946 /* Default LMV has fixed size, so it must be able to fit
947 * in the original buffer */
948 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
950 rc = mdt_big_xattr_get(info, o, name);
952 info->mti_big_lmm_used = 1;
960 static int mdt_attr_get_pfid(struct mdt_thread_info *info,
961 struct mdt_object *o, struct lu_fid *pfid)
963 struct lu_buf *buf = &info->mti_buf;
964 struct link_ea_header *leh;
965 struct link_ea_entry *lee;
969 buf->lb_buf = info->mti_big_lmm;
970 buf->lb_len = info->mti_big_lmmsize;
971 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
972 buf, XATTR_NAME_LINK);
973 /* ignore errors, MA_PFID won't be set and it is
974 * up to the caller to treat this as an error */
975 if (rc == -ERANGE || buf->lb_len == 0) {
976 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
977 buf->lb_buf = info->mti_big_lmm;
978 buf->lb_len = info->mti_big_lmmsize;
983 if (rc < sizeof(*leh)) {
984 CERROR("short LinkEA on "DFID": rc = %d\n",
985 PFID(mdt_object_fid(o)), rc);
989 leh = (struct link_ea_header *) buf->lb_buf;
990 lee = (struct link_ea_entry *)(leh + 1);
991 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
992 leh->leh_magic = LINK_EA_MAGIC;
993 leh->leh_reccount = __swab32(leh->leh_reccount);
994 leh->leh_len = __swab64(leh->leh_len);
996 if (leh->leh_magic != LINK_EA_MAGIC)
998 if (leh->leh_reccount == 0)
1001 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
1002 fid_be_to_cpu(pfid, pfid);
1007 int mdt_attr_get_complex(struct mdt_thread_info *info,
1008 struct mdt_object *o, struct md_attr *ma)
1010 const struct lu_env *env = info->mti_env;
1011 struct md_object *next = mdt_object_child(o);
1012 struct lu_buf *buf = &info->mti_buf;
1013 int need = ma->ma_need;
1020 if (mdt_object_exists(o) == 0)
1021 GOTO(out, rc = -ENOENT);
1022 mode = lu_object_attr(&next->mo_lu);
1024 if (need & MA_INODE) {
1025 ma->ma_need = MA_INODE;
1026 rc = mo_attr_get(env, next, ma);
1031 (void) mdt_get_som(info, o, &ma->ma_attr);
1032 ma->ma_valid |= MA_INODE;
1035 if (need & MA_PFID) {
1036 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
1038 ma->ma_valid |= MA_PFID;
1039 /* ignore this error, parent fid is not mandatory */
1043 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
1044 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
1049 if (need & MA_LMV && S_ISDIR(mode)) {
1050 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
1055 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
1056 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
1061 if (need & MA_HSM && S_ISREG(mode)) {
1062 buf->lb_buf = info->mti_xattr_buf;
1063 buf->lb_len = sizeof(info->mti_xattr_buf);
1064 CLASSERT(sizeof(struct hsm_attrs) <=
1065 sizeof(info->mti_xattr_buf));
1066 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
1067 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
1069 ma->ma_valid |= MA_HSM;
1070 else if (rc2 < 0 && rc2 != -ENODATA)
1071 GOTO(out, rc = rc2);
1074 #ifdef CONFIG_FS_POSIX_ACL
1075 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
1076 buf->lb_buf = ma->ma_acl;
1077 buf->lb_len = ma->ma_acl_size;
1078 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
1080 ma->ma_acl_size = rc2;
1081 ma->ma_valid |= MA_ACL_DEF;
1082 } else if (rc2 == -ENODATA) {
1084 ma->ma_acl_size = 0;
1086 GOTO(out, rc = rc2);
1091 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = %#llx ma_lmm=%p\n",
1092 rc, ma->ma_valid, ma->ma_lmm);
1096 static int mdt_getattr_internal(struct mdt_thread_info *info,
1097 struct mdt_object *o, int ma_need)
1099 struct md_object *next = mdt_object_child(o);
1100 const struct mdt_body *reqbody = info->mti_body;
1101 struct ptlrpc_request *req = mdt_info_req(info);
1102 struct md_attr *ma = &info->mti_attr;
1103 struct lu_attr *la = &ma->ma_attr;
1104 struct req_capsule *pill = info->mti_pill;
1105 const struct lu_env *env = info->mti_env;
1106 struct mdt_body *repbody;
1107 struct lu_buf *buffer = &info->mti_buf;
1108 struct obd_export *exp = info->mti_exp;
1112 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
1113 RETURN(err_serious(-ENOMEM));
1115 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1119 if (mdt_object_remote(o)) {
1120 /* This object is located on remote node.*/
1121 /* Return -ENOTSUPP for old client */
1122 if (!mdt_is_dne_client(req->rq_export))
1123 GOTO(out, rc = -ENOTSUPP);
1125 repbody->mbo_fid1 = *mdt_object_fid(o);
1126 repbody->mbo_valid = OBD_MD_FLID | OBD_MD_MDS;
1130 if (reqbody->mbo_eadatasize > 0) {
1131 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
1132 if (buffer->lb_buf == NULL)
1133 GOTO(out, rc = -EPROTO);
1134 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD,
1137 buffer->lb_buf = NULL;
1139 ma_need &= ~(MA_LOV | MA_LMV);
1140 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
1141 mdt_obd_name(info->mti_mdt),
1142 req->rq_export->exp_client_uuid.uuid);
1145 /* If it is dir object and client require MEA, then we got MEA */
1146 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1147 (reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
1148 /* Assumption: MDT_MD size is enough for lmv size. */
1149 ma->ma_lmv = buffer->lb_buf;
1150 ma->ma_lmv_size = buffer->lb_len;
1151 ma->ma_need = MA_INODE;
1152 if (ma->ma_lmv_size > 0) {
1153 if (reqbody->mbo_valid & OBD_MD_MEA)
1154 ma->ma_need |= MA_LMV;
1155 else if (reqbody->mbo_valid & OBD_MD_DEFAULT_MEA)
1156 ma->ma_need |= MA_LMV_DEF;
1159 ma->ma_lmm = buffer->lb_buf;
1160 ma->ma_lmm_size = buffer->lb_len;
1161 ma->ma_need = MA_INODE | MA_HSM;
1162 if (ma->ma_lmm_size > 0)
1163 ma->ma_need |= MA_LOV;
1166 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1167 reqbody->mbo_valid & OBD_MD_FLDIREA &&
1168 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
1169 /* get default stripe info for this dir. */
1170 ma->ma_need |= MA_LOV_DEF;
1172 ma->ma_need |= ma_need;
1174 rc = mdt_attr_get_complex(info, o, ma);
1176 CDEBUG(rc == -ENOENT ? D_OTHER : D_ERROR,
1177 "%s: getattr error for "DFID": rc = %d\n",
1178 mdt_obd_name(info->mti_mdt),
1179 PFID(mdt_object_fid(o)), rc);
1183 /* if file is released, check if a restore is running */
1184 if (ma->ma_valid & MA_HSM) {
1185 repbody->mbo_valid |= OBD_MD_TSTATE;
1186 if ((ma->ma_hsm.mh_flags & HS_RELEASED) &&
1187 mdt_hsm_restore_is_running(info, mdt_object_fid(o)))
1188 repbody->mbo_t_state = MS_RESTORE;
1191 if (likely(ma->ma_valid & MA_INODE))
1192 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
1196 if (mdt_body_has_lov(la, reqbody)) {
1197 if (ma->ma_valid & MA_LOV) {
1198 LASSERT(ma->ma_lmm_size);
1199 repbody->mbo_eadatasize = ma->ma_lmm_size;
1200 if (S_ISDIR(la->la_mode))
1201 repbody->mbo_valid |= OBD_MD_FLDIREA;
1203 repbody->mbo_valid |= OBD_MD_FLEASIZE;
1204 mdt_dump_lmm(D_INFO, ma->ma_lmm, repbody->mbo_valid);
1206 if (ma->ma_valid & MA_LMV) {
1207 /* Return -ENOTSUPP for old client */
1208 if (!mdt_is_striped_client(req->rq_export))
1211 LASSERT(S_ISDIR(la->la_mode));
1212 mdt_dump_lmv(D_INFO, ma->ma_lmv);
1213 repbody->mbo_eadatasize = ma->ma_lmv_size;
1214 repbody->mbo_valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
1216 if (ma->ma_valid & MA_LMV_DEF) {
1217 /* Return -ENOTSUPP for old client */
1218 if (!mdt_is_striped_client(req->rq_export))
1220 LASSERT(S_ISDIR(la->la_mode));
1221 mdt_dump_lmv(D_INFO, ma->ma_lmv);
1222 repbody->mbo_eadatasize = ma->ma_lmv_size;
1223 repbody->mbo_valid |= (OBD_MD_FLDIREA |
1224 OBD_MD_DEFAULT_MEA);
1226 } else if (S_ISLNK(la->la_mode) &&
1227 reqbody->mbo_valid & OBD_MD_LINKNAME) {
1228 buffer->lb_buf = ma->ma_lmm;
1229 /* eadatasize from client includes NULL-terminator, so
1230 * there is no need to read it */
1231 buffer->lb_len = reqbody->mbo_eadatasize - 1;
1232 rc = mo_readlink(env, next, buffer);
1233 if (unlikely(rc <= 0)) {
1234 CERROR("%s: readlink failed for "DFID": rc = %d\n",
1235 mdt_obd_name(info->mti_mdt),
1236 PFID(mdt_object_fid(o)), rc);
1239 int print_limit = min_t(int, PAGE_SIZE - 128, rc);
1241 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
1243 repbody->mbo_valid |= OBD_MD_LINKNAME;
1244 /* we need to report back size with NULL-terminator
1245 * because client expects that */
1246 repbody->mbo_eadatasize = rc + 1;
1247 if (repbody->mbo_eadatasize != reqbody->mbo_eadatasize)
1248 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
1249 "on "DFID ", expected %d\n",
1250 mdt_obd_name(info->mti_mdt),
1251 rc, PFID(mdt_object_fid(o)),
1252 reqbody->mbo_eadatasize - 1);
1253 /* NULL terminate */
1254 ((char *)ma->ma_lmm)[rc] = 0;
1256 /* If the total CDEBUG() size is larger than a page, it
1257 * will print a warning to the console, avoid this by
1258 * printing just the last part of the symlink. */
1259 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
1260 print_limit < rc ? "..." : "", print_limit,
1261 (char *)ma->ma_lmm + rc - print_limit, rc);
1266 if (reqbody->mbo_valid & OBD_MD_FLMODEASIZE) {
1267 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
1268 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
1269 CDEBUG(D_INODE, "changing the max MD size to %u\n",
1270 repbody->mbo_max_mdsize);
1273 #ifdef CONFIG_FS_POSIX_ACL
1274 if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
1275 (reqbody->mbo_valid & OBD_MD_FLACL)) {
1276 struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
1277 if (IS_ERR(nodemap))
1278 RETURN(PTR_ERR(nodemap));
1280 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
1281 nodemap_putref(nodemap);
1287 mdt_counter_incr(req, LPROC_MDT_GETATTR);
1292 static int mdt_getattr(struct tgt_session_info *tsi)
1294 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1295 struct mdt_object *obj = info->mti_object;
1296 struct req_capsule *pill = info->mti_pill;
1297 struct mdt_body *reqbody;
1298 struct mdt_body *repbody;
1302 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1304 LASSERT(obj != NULL);
1305 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1307 /* Special case for Data-on-MDT files to get data version */
1308 if (unlikely(reqbody->mbo_valid & OBD_MD_FLDATAVERSION)) {
1309 rc = mdt_data_version_get(tsi);
1313 /* Unlike intent case where we need to pre-fill out buffers early on
1314 * in intent policy for ldlm reasons, here we can have a much better
1315 * guess at EA size by just reading it from disk.
1316 * Exceptions are readdir and (missing) directory striping */
1318 if (reqbody->mbo_valid & OBD_MD_LINKNAME) {
1319 /* No easy way to know how long is the symlink, but it cannot
1320 * be more than PATH_MAX, so we allocate +1 */
1322 /* A special case for fs ROOT: getattr there might fetch
1323 * default EA for entire fs, not just for this dir!
1325 } else if (lu_fid_eq(mdt_object_fid(obj),
1326 &info->mti_mdt->mdt_md_root_fid) &&
1327 (reqbody->mbo_valid & OBD_MD_FLDIREA) &&
1328 (lustre_msg_get_opc(mdt_info_req(info)->rq_reqmsg) ==
1330 /* Should the default strping be bigger, mdt_fix_reply
1331 * will reallocate */
1332 rc = DEF_REP_MD_SIZE;
1334 /* Read the actual EA size from disk */
1335 rc = mdt_attr_get_eabuf_size(info, obj);
1339 GOTO(out, rc = err_serious(rc));
1341 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, rc);
1343 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
1344 * by default. If the target object has more ACL entries, then
1345 * enlarge the buffer when necessary. */
1346 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
1347 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
1349 rc = req_capsule_server_pack(pill);
1350 if (unlikely(rc != 0))
1351 GOTO(out, rc = err_serious(rc));
1353 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1354 LASSERT(repbody != NULL);
1355 repbody->mbo_eadatasize = 0;
1356 repbody->mbo_aclsize = 0;
1358 rc = mdt_check_ucred(info);
1360 GOTO(out_shrink, rc);
1362 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1364 rc = mdt_getattr_internal(info, obj, 0);
1367 mdt_client_compatibility(info);
1368 rc2 = mdt_fix_reply(info);
1372 mdt_thread_info_fini(info);
1377 * Handler of layout intent RPC requiring the layout modification
1379 * \param[in] info thread environment
1380 * \param[in] obj object
1381 * \param[in] layout layout change descriptor
1383 * \retval 0 on success
1384 * \retval < 0 error code
1386 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
1387 struct md_layout_change *layout)
1389 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LOCAL];
1393 if (!mdt_object_exists(obj))
1394 GOTO(out, rc = -ENOENT);
1396 if (!S_ISREG(lu_object_attr(&obj->mot_obj)))
1397 GOTO(out, rc = -EINVAL);
1399 rc = mo_permission(info->mti_env, NULL, mdt_object_child(obj), NULL,
1404 /* take layout lock to prepare layout change */
1405 mdt_lock_reg_init(lh, LCK_EX);
1406 rc = mdt_object_lock(info, obj, lh, MDS_INODELOCK_LAYOUT);
1410 rc = mo_layout_change(info->mti_env, mdt_object_child(obj), layout);
1412 mdt_object_unlock(info, obj, lh, 1);
1418 * Exchange MOF_LOV_CREATED flags between two objects after a
1419 * layout swap. No assumption is made on whether o1 or o2 have
1420 * created objects or not.
1422 * \param[in,out] o1 First swap layout object
1423 * \param[in,out] o2 Second swap layout object
1425 static void mdt_swap_lov_flag(struct mdt_object *o1, struct mdt_object *o2)
1427 unsigned int o1_lov_created = o1->mot_lov_created;
1429 mutex_lock(&o1->mot_lov_mutex);
1430 mutex_lock(&o2->mot_lov_mutex);
1432 o1->mot_lov_created = o2->mot_lov_created;
1433 o2->mot_lov_created = o1_lov_created;
1435 mutex_unlock(&o2->mot_lov_mutex);
1436 mutex_unlock(&o1->mot_lov_mutex);
1439 static int mdt_swap_layouts(struct tgt_session_info *tsi)
1441 struct mdt_thread_info *info;
1442 struct ptlrpc_request *req = tgt_ses_req(tsi);
1443 struct obd_export *exp = req->rq_export;
1444 struct mdt_object *o1, *o2, *o;
1445 struct mdt_lock_handle *lh1, *lh2;
1446 struct mdc_swap_layouts *msl;
1450 /* client does not support layout lock, so layout swaping
1452 * FIXME: there is a problem for old clients which don't support
1453 * layout lock yet. If those clients have already opened the file
1454 * they won't be notified at all so that old layout may still be
1455 * used to do IO. This can be fixed after file release is landed by
1456 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1457 if (!exp_connect_layout(exp))
1458 RETURN(-EOPNOTSUPP);
1460 info = tsi2mdt_info(tsi);
1462 if (info->mti_dlm_req != NULL)
1463 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
1465 o1 = info->mti_object;
1466 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1467 &info->mti_body->mbo_fid2);
1469 GOTO(out, rc = PTR_ERR(o));
1471 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1472 GOTO(put, rc = -ENOENT);
1474 rc = lu_fid_cmp(&info->mti_body->mbo_fid1, &info->mti_body->mbo_fid2);
1475 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1481 /* permission check. Make sure the calling process having permission
1482 * to write both files. */
1483 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1488 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1493 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1495 GOTO(put, rc = -EPROTO);
1497 lh1 = &info->mti_lh[MDT_LH_NEW];
1498 mdt_lock_reg_init(lh1, LCK_EX);
1499 lh2 = &info->mti_lh[MDT_LH_OLD];
1500 mdt_lock_reg_init(lh2, LCK_EX);
1502 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1503 MDS_INODELOCK_XATTR);
1507 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1508 MDS_INODELOCK_XATTR);
1512 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1513 mdt_object_child(o2), msl->msl_flags);
1517 mdt_swap_lov_flag(o1, o2);
1520 mdt_object_unlock(info, o2, lh2, rc);
1522 mdt_object_unlock(info, o1, lh1, rc);
1524 mdt_object_put(info->mti_env, o);
1526 mdt_thread_info_fini(info);
1530 static int mdt_raw_lookup(struct mdt_thread_info *info,
1531 struct mdt_object *parent,
1532 const struct lu_name *lname,
1533 struct ldlm_reply *ldlm_rep)
1535 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1539 LASSERT(!info->mti_cross_ref);
1541 /* Only got the fid of this obj by name */
1542 fid_zero(child_fid);
1543 rc = mdo_lookup(info->mti_env, mdt_object_child(info->mti_object),
1544 lname, child_fid, &info->mti_spec);
1546 struct mdt_body *repbody;
1548 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1549 repbody->mbo_fid1 = *child_fid;
1550 repbody->mbo_valid = OBD_MD_FLID;
1551 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1552 } else if (rc == -ENOENT) {
1553 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1560 * UPDATE lock should be taken against parent, and be released before exit;
1561 * child_bits lock should be taken against child, and be returned back:
1562 * (1)normal request should release the child lock;
1563 * (2)intent request will grant the lock to client.
1565 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1566 struct mdt_lock_handle *lhc,
1568 struct ldlm_reply *ldlm_rep)
1570 struct ptlrpc_request *req = mdt_info_req(info);
1571 struct mdt_body *reqbody = NULL;
1572 struct mdt_object *parent = info->mti_object;
1573 struct mdt_object *child;
1574 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1575 struct lu_name *lname = NULL;
1576 struct mdt_lock_handle *lhp = NULL;
1577 struct ldlm_lock *lock;
1585 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1586 LASSERT(ergo(is_resent,
1587 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1592 if (info->mti_cross_ref) {
1593 /* Only getattr on the child. Parent is on another node. */
1594 mdt_set_disposition(info, ldlm_rep,
1595 DISP_LOOKUP_EXECD | DISP_LOOKUP_POS);
1597 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1599 PFID(mdt_object_fid(child)), ldlm_rep);
1601 rc = mdt_check_resent_lock(info, child, lhc);
1604 } else if (rc > 0) {
1605 mdt_lock_handle_init(lhc);
1606 mdt_lock_reg_init(lhc, LCK_PR);
1609 * Object's name is on another MDS, no lookup or layout
1610 * lock is needed here but update lock is.
1612 child_bits &= ~(MDS_INODELOCK_LOOKUP |
1613 MDS_INODELOCK_LAYOUT);
1614 child_bits |= MDS_INODELOCK_PERM | MDS_INODELOCK_UPDATE;
1616 rc = mdt_object_lock(info, child, lhc, child_bits);
1621 /* Finally, we can get attr for child. */
1622 if (!mdt_object_exists(child)) {
1623 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
1625 "remote object doesn't exist.");
1626 mdt_object_unlock(info, child, lhc, 1);
1630 rc = mdt_getattr_internal(info, child, 0);
1631 if (unlikely(rc != 0))
1632 mdt_object_unlock(info, child, lhc, 1);
1637 lname = &info->mti_name;
1638 mdt_name_unpack(info->mti_pill, &RMF_NAME, lname, MNF_FIX_ANON);
1640 if (lu_name_is_valid(lname)) {
1641 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", "
1642 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1643 PNAME(lname), ldlm_rep);
1645 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1646 if (unlikely(reqbody == NULL))
1647 RETURN(err_serious(-EPROTO));
1649 *child_fid = reqbody->mbo_fid2;
1651 if (unlikely(!fid_is_sane(child_fid)))
1652 RETURN(err_serious(-EINVAL));
1654 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1656 PFID(mdt_object_fid(parent)),
1657 PFID(&reqbody->mbo_fid2), ldlm_rep);
1660 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1662 if (unlikely(!mdt_object_exists(parent)) && lu_name_is_valid(lname)) {
1663 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1665 "Parent doesn't exist!");
1669 if (mdt_object_remote(parent)) {
1670 CERROR("%s: parent "DFID" is on remote target\n",
1671 mdt_obd_name(info->mti_mdt),
1672 PFID(mdt_object_fid(parent)));
1676 if (lu_name_is_valid(lname)) {
1677 /* Always allow to lookup ".." */
1678 if (unlikely(lname->ln_namelen == 2 &&
1679 lname->ln_name[0] == '.' &&
1680 lname->ln_name[1] == '.'))
1681 info->mti_spec.sp_permitted = 1;
1683 if (info->mti_body->mbo_valid == OBD_MD_FLID) {
1684 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1689 /* step 1: lock parent only if parent is a directory */
1690 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
1691 lhp = &info->mti_lh[MDT_LH_PARENT];
1692 mdt_lock_pdo_init(lhp, LCK_PR, lname);
1693 rc = mdt_object_lock(info, parent, lhp,
1694 MDS_INODELOCK_UPDATE);
1695 if (unlikely(rc != 0))
1699 /* step 2: lookup child's fid by name */
1700 fid_zero(child_fid);
1701 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
1702 child_fid, &info->mti_spec);
1704 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1707 GOTO(out_parent, rc);
1710 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1713 *step 3: find the child object by fid & lock it.
1714 * regardless if it is local or remote.
1716 *Note: LU-3240 (commit 762f2114d282a98ebfa4dbbeea9298a8088ad24e)
1717 * set parent dir fid the same as child fid in getattr by fid case
1718 * we should not lu_object_find() the object again, could lead
1719 * to hung if there is a concurrent unlink destroyed the object.
1721 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
1722 mdt_object_get(info->mti_env, parent);
1725 child = mdt_object_find(info->mti_env, info->mti_mdt,
1729 if (unlikely(IS_ERR(child)))
1730 GOTO(out_parent, rc = PTR_ERR(child));
1732 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout * 2);
1733 if (!mdt_object_exists(child)) {
1734 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1736 "Object doesn't exist!");
1737 GOTO(out_child, rc = -ENOENT);
1740 rc = mdt_check_resent_lock(info, child, lhc);
1742 GOTO(out_child, rc);
1743 } else if (rc > 0) {
1744 mdt_lock_handle_init(lhc);
1745 mdt_lock_reg_init(lhc, LCK_PR);
1747 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1748 mdt_object_exists(child) && !mdt_object_remote(child)) {
1749 struct md_attr *ma = &info->mti_attr;
1752 ma->ma_need = MA_INODE;
1753 rc = mdt_attr_get_complex(info, child, ma);
1754 if (unlikely(rc != 0))
1755 GOTO(out_child, rc);
1757 /* If the file has not been changed for some time, we
1758 * return not only a LOOKUP lock, but also an UPDATE
1759 * lock and this might save us RPC on later STAT. For
1760 * directories, it also let negative dentry cache start
1761 * working for this dir. */
1762 if (ma->ma_valid & MA_INODE &&
1763 ma->ma_attr.la_valid & LA_CTIME &&
1764 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1765 ma->ma_attr.la_ctime < ktime_get_real_seconds())
1766 child_bits |= MDS_INODELOCK_UPDATE;
1769 /* layout lock must be granted in a best-effort way
1770 * for IT operations */
1771 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1772 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
1773 !mdt_object_remote(child) && ldlm_rep != NULL) {
1774 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1775 exp_connect_layout(info->mti_exp)) {
1776 /* try to grant layout lock for regular file. */
1777 try_bits = MDS_INODELOCK_LAYOUT;
1779 /* Acquire DOM lock in advance for data-on-mdt file */
1780 if (child != parent)
1781 try_bits |= MDS_INODELOCK_DOM;
1784 if (try_bits != 0) {
1785 /* try layout lock, it may fail to be granted due to
1786 * contention at LOOKUP or UPDATE */
1787 rc = mdt_object_lock_try(info, child, lhc, &child_bits,
1789 if (child_bits & MDS_INODELOCK_LAYOUT)
1792 /* Do not enqueue the UPDATE lock from MDT(cross-MDT),
1793 * client will enqueue the lock to the remote MDT */
1794 if (mdt_object_remote(child))
1795 child_bits &= ~MDS_INODELOCK_UPDATE;
1796 rc = mdt_object_lock(info, child, lhc, child_bits);
1798 if (unlikely(rc != 0))
1799 GOTO(out_child, rc);
1802 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1804 /* finally, we can get attr for child. */
1805 rc = mdt_getattr_internal(info, child, ma_need);
1806 if (unlikely(rc != 0)) {
1807 mdt_object_unlock(info, child, lhc, 1);
1809 /* Debugging code. */
1810 LDLM_DEBUG(lock, "Returning lock to client");
1811 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1812 &lock->l_resource->lr_name),
1813 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1814 PLDLMRES(lock->l_resource),
1815 PFID(mdt_object_fid(child)));
1817 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
1818 mdt_object_exists(child) && !mdt_object_remote(child) &&
1820 LDLM_LOCK_PUT(lock);
1821 mdt_object_put(info->mti_env, child);
1822 /* NB: call the mdt_pack_size2body always after
1823 * mdt_object_put(), that is why this speacial
1824 * exit path is used. */
1825 rc = mdt_pack_size2body(info, child_fid,
1826 child_bits & MDS_INODELOCK_DOM);
1827 if (rc != 0 && child_bits & MDS_INODELOCK_DOM) {
1828 /* DOM lock was taken in advance but this is
1829 * not DoM file. Drop the lock. */
1830 lock_res_and_lock(lock);
1831 ldlm_inodebits_drop(lock, MDS_INODELOCK_DOM);
1832 unlock_res_and_lock(lock);
1835 GOTO(out_parent, rc = 0);
1839 LDLM_LOCK_PUT(lock);
1843 mdt_object_put(info->mti_env, child);
1846 mdt_object_unlock(info, parent, lhp, 1);
1850 /* normal handler: should release the child lock */
1851 static int mdt_getattr_name(struct tgt_session_info *tsi)
1853 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1854 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1855 struct mdt_body *reqbody;
1856 struct mdt_body *repbody;
1860 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1861 LASSERT(reqbody != NULL);
1862 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1863 LASSERT(repbody != NULL);
1865 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1866 repbody->mbo_eadatasize = 0;
1867 repbody->mbo_aclsize = 0;
1869 rc = mdt_init_ucred_intent_getattr(info, reqbody);
1871 GOTO(out_shrink, rc);
1873 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1874 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1875 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1876 lhc->mlh_reg_lh.cookie = 0;
1878 mdt_exit_ucred(info);
1881 mdt_client_compatibility(info);
1882 rc2 = mdt_fix_reply(info);
1885 mdt_thread_info_fini(info);
1889 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1890 void *karg, void __user *uarg);
1892 static int mdt_set_info(struct tgt_session_info *tsi)
1894 struct ptlrpc_request *req = tgt_ses_req(tsi);
1897 int keylen, vallen, rc = 0;
1901 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
1903 DEBUG_REQ(D_HA, req, "no set_info key");
1904 RETURN(err_serious(-EFAULT));
1907 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
1910 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
1912 DEBUG_REQ(D_HA, req, "no set_info val");
1913 RETURN(err_serious(-EFAULT));
1916 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
1919 /* Swab any part of val you need to here */
1920 if (KEY_IS(KEY_READ_ONLY)) {
1921 spin_lock(&req->rq_export->exp_lock);
1923 *exp_connect_flags_ptr(req->rq_export) |=
1926 *exp_connect_flags_ptr(req->rq_export) &=
1927 ~OBD_CONNECT_RDONLY;
1928 spin_unlock(&req->rq_export->exp_lock);
1929 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1930 struct changelog_setinfo *cs = val;
1932 if (vallen != sizeof(*cs)) {
1933 CERROR("%s: bad changelog_clear setinfo size %d\n",
1934 tgt_name(tsi->tsi_tgt), vallen);
1937 if (ptlrpc_req_need_swab(req)) {
1938 __swab64s(&cs->cs_recno);
1939 __swab32s(&cs->cs_id);
1942 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
1944 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
1946 obd_export_evict_by_nid(req->rq_export->exp_obd, val);
1953 static int mdt_readpage(struct tgt_session_info *tsi)
1955 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
1956 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
1957 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1958 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
1959 struct mdt_body *repbody;
1965 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1966 RETURN(err_serious(-ENOMEM));
1968 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
1969 if (repbody == NULL || reqbody == NULL)
1970 RETURN(err_serious(-EFAULT));
1973 * prepare @rdpg before calling lower layers and transfer itself. Here
1974 * reqbody->size contains offset of where to start to read and
1975 * reqbody->nlink contains number bytes to read.
1977 rdpg->rp_hash = reqbody->mbo_size;
1978 if (rdpg->rp_hash != reqbody->mbo_size) {
1979 CERROR("Invalid hash: %#llx != %#llx\n",
1980 rdpg->rp_hash, reqbody->mbo_size);
1984 rdpg->rp_attrs = reqbody->mbo_mode;
1985 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
1986 rdpg->rp_attrs |= LUDA_64BITHASH;
1987 rdpg->rp_count = min_t(unsigned int, reqbody->mbo_nlink,
1988 exp_max_brw_size(tsi->tsi_exp));
1989 rdpg->rp_npages = (rdpg->rp_count + PAGE_SIZE - 1) >>
1991 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1992 if (rdpg->rp_pages == NULL)
1995 for (i = 0; i < rdpg->rp_npages; ++i) {
1996 rdpg->rp_pages[i] = alloc_page(GFP_NOFS);
1997 if (rdpg->rp_pages[i] == NULL)
1998 GOTO(free_rdpg, rc = -ENOMEM);
2001 /* call lower layers to fill allocated pages with directory data */
2002 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
2004 GOTO(free_rdpg, rc);
2006 /* send pages to client */
2007 rc = tgt_sendpage(tsi, rdpg, rc);
2012 for (i = 0; i < rdpg->rp_npages; i++)
2013 if (rdpg->rp_pages[i] != NULL)
2014 __free_page(rdpg->rp_pages[i]);
2015 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
2017 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
2023 static int mdt_fix_attr_ucred(struct mdt_thread_info *info, __u32 op)
2025 struct lu_ucred *uc = mdt_ucred_check(info);
2026 struct lu_attr *attr = &info->mti_attr.ma_attr;
2031 if (op != REINT_SETATTR) {
2032 if ((attr->la_valid & LA_UID) && (attr->la_uid != -1))
2033 attr->la_uid = uc->uc_fsuid;
2034 /* for S_ISGID, inherit gid from his parent, such work will be
2035 * done in cmm/mdd layer, here set all cases as uc->uc_fsgid. */
2036 if ((attr->la_valid & LA_GID) && (attr->la_gid != -1))
2037 attr->la_gid = uc->uc_fsgid;
2043 static int mdt_reint_internal(struct mdt_thread_info *info,
2044 struct mdt_lock_handle *lhc,
2047 struct req_capsule *pill = info->mti_pill;
2048 struct mdt_body *repbody;
2053 rc = mdt_reint_unpack(info, op);
2055 CERROR("Can't unpack reint, rc %d\n", rc);
2056 RETURN(err_serious(rc));
2059 /* for replay (no_create) lmm is not needed, client has it already */
2060 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2061 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2064 /* llog cookies are always 0, the field is kept for compatibility */
2065 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2066 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
2068 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
2069 * by default. If the target object has more ACL entries, then
2070 * enlarge the buffer when necessary. */
2071 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
2072 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
2073 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
2075 rc = req_capsule_server_pack(pill);
2077 CERROR("Can't pack response, rc %d\n", rc);
2078 RETURN(err_serious(rc));
2081 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
2082 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
2084 repbody->mbo_eadatasize = 0;
2085 repbody->mbo_aclsize = 0;
2088 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
2090 /* for replay no cookkie / lmm need, because client have this already */
2091 if (info->mti_spec.no_create)
2092 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2093 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
2095 rc = mdt_init_ucred_reint(info);
2097 GOTO(out_shrink, rc);
2099 rc = mdt_fix_attr_ucred(info, op);
2101 GOTO(out_ucred, rc = err_serious(rc));
2103 rc = mdt_check_resent(info, mdt_reconstruct, lhc);
2105 GOTO(out_ucred, rc);
2106 } else if (rc == 1) {
2107 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
2108 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
2109 GOTO(out_ucred, rc);
2111 rc = mdt_reint_rec(info, lhc);
2114 mdt_exit_ucred(info);
2116 mdt_client_compatibility(info);
2117 rc2 = mdt_fix_reply(info);
2123 static long mdt_reint_opcode(struct ptlrpc_request *req,
2124 const struct req_format **fmt)
2126 struct mdt_device *mdt;
2127 struct mdt_rec_reint *rec;
2130 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
2132 opc = rec->rr_opcode;
2133 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
2134 if (opc < REINT_MAX && fmt[opc] != NULL)
2135 req_capsule_extend(&req->rq_pill, fmt[opc]);
2137 mdt = mdt_exp2dev(req->rq_export);
2138 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
2139 " rc = %d\n", req->rq_export->exp_obd->obd_name,
2140 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
2141 opc = err_serious(-EFAULT);
2144 opc = err_serious(-EFAULT);
2149 static int mdt_reint(struct tgt_session_info *tsi)
2153 static const struct req_format *reint_fmts[REINT_MAX] = {
2154 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
2155 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
2156 [REINT_LINK] = &RQF_MDS_REINT_LINK,
2157 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
2158 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
2159 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
2160 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
2161 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
2162 [REINT_MIGRATE] = &RQF_MDS_REINT_RENAME,
2163 [REINT_RESYNC] = &RQF_MDS_REINT_RESYNC,
2168 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
2170 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2172 * No lock possible here from client to pass it to reint code
2175 rc = mdt_reint_internal(info, NULL, opc);
2176 mdt_thread_info_fini(info);
2181 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
2185 /* this should sync the whole device */
2186 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
2188 struct dt_device *dt = mdt->mdt_bottom;
2192 rc = dt->dd_ops->dt_sync(env, dt);
2196 /* this should sync this object */
2197 static int mdt_object_sync(const struct lu_env *env, struct obd_export *exp,
2198 struct mdt_object *mo)
2204 if (!mdt_object_exists(mo)) {
2205 CWARN("%s: non existing object "DFID": rc = %d\n",
2206 exp->exp_obd->obd_name, PFID(mdt_object_fid(mo)),
2211 rc = mo_object_sync(env, mdt_object_child(mo));
2216 static int mdt_sync(struct tgt_session_info *tsi)
2218 struct ptlrpc_request *req = tgt_ses_req(tsi);
2219 struct req_capsule *pill = tsi->tsi_pill;
2220 struct mdt_body *body;
2225 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
2226 RETURN(err_serious(-ENOMEM));
2228 if (fid_seq(&tsi->tsi_mdt_body->mbo_fid1) == 0) {
2229 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
2231 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2233 /* sync an object */
2234 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp,
2237 const struct lu_fid *fid;
2238 struct lu_attr *la = &info->mti_attr.ma_attr;
2240 info->mti_attr.ma_need = MA_INODE;
2241 info->mti_attr.ma_valid = 0;
2242 rc = mdt_attr_get_complex(info, info->mti_object,
2245 body = req_capsule_server_get(pill,
2247 fid = mdt_object_fid(info->mti_object);
2248 mdt_pack_attr2body(info, body, la, fid);
2251 mdt_thread_info_fini(info);
2254 mdt_counter_incr(req, LPROC_MDT_SYNC);
2259 static int mdt_data_sync(struct tgt_session_info *tsi)
2261 struct mdt_thread_info *info;
2262 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2263 struct ost_body *body = tsi->tsi_ost_body;
2264 struct ost_body *repbody;
2265 struct mdt_object *mo = NULL;
2271 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
2273 /* if no fid is specified then do nothing,
2274 * device sync is done via MDS_SYNC */
2275 if (fid_is_zero(&tsi->tsi_fid))
2278 mo = mdt_object_find(tsi->tsi_env, mdt, &tsi->tsi_fid);
2280 RETURN(PTR_ERR(mo));
2282 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp, mo);
2286 repbody->oa.o_oi = body->oa.o_oi;
2287 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
2289 info = tsi2mdt_info(tsi);
2290 ma = &info->mti_attr;
2291 ma->ma_need = MA_INODE;
2293 rc = mdt_attr_get_complex(info, mo, ma);
2295 obdo_from_la(&repbody->oa, &ma->ma_attr, VALID_FLAGS);
2298 mdt_thread_info_fini(info);
2303 mdt_object_put(tsi->tsi_env, mo);
2308 * Handle quota control requests to consult current usage/limit, but also
2309 * to configure quota enforcement
2311 static int mdt_quotactl(struct tgt_session_info *tsi)
2313 struct obd_export *exp = tsi->tsi_exp;
2314 struct req_capsule *pill = tsi->tsi_pill;
2315 struct obd_quotactl *oqctl, *repoqc;
2317 struct mdt_device *mdt = mdt_exp2dev(exp);
2318 struct lu_device *qmt = mdt->mdt_qmt_dev;
2319 struct lu_nodemap *nodemap;
2322 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
2324 RETURN(err_serious(-EPROTO));
2326 rc = req_capsule_server_pack(pill);
2328 RETURN(err_serious(rc));
2330 nodemap = nodemap_get_from_exp(exp);
2331 if (IS_ERR(nodemap))
2332 RETURN(PTR_ERR(nodemap));
2334 switch (oqctl->qc_cmd) {
2335 /* master quotactl */
2338 if (!nodemap_can_setquota(nodemap))
2339 GOTO(out_nodemap, rc = -EPERM);
2343 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2344 /* slave quotactl */
2349 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2350 GOTO(out_nodemap, rc = -EFAULT);
2354 switch (oqctl->qc_type) {
2356 id = nodemap_map_id(nodemap, NODEMAP_UID,
2357 NODEMAP_CLIENT_TO_FS, id);
2360 id = nodemap_map_id(nodemap, NODEMAP_GID,
2361 NODEMAP_CLIENT_TO_FS, id);
2364 /* todo: check/map project id */
2368 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2370 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
2372 GOTO(out_nodemap, rc = err_serious(-EFAULT));
2374 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA)
2375 barrier_exit(tsi->tsi_tgt->lut_bottom);
2377 if (oqctl->qc_id != id)
2378 swap(oqctl->qc_id, id);
2380 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA) {
2381 if (unlikely(!barrier_entry(tsi->tsi_tgt->lut_bottom)))
2382 RETURN(-EINPROGRESS);
2385 switch (oqctl->qc_cmd) {
2391 /* forward quotactl request to QMT */
2392 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
2397 /* slave quotactl */
2398 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
2403 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2404 GOTO(out_nodemap, rc = -EFAULT);
2407 if (oqctl->qc_id != id)
2408 swap(oqctl->qc_id, id);
2415 nodemap_putref(nodemap);
2420 /** clone llog ctxt from child (mdd)
2421 * This allows remote llog (replicator) access.
2422 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2423 * context was originally set up, or we can handle them directly.
2424 * I choose the latter, but that means I need any llog
2425 * contexts set up by child to be accessable by the mdt. So we clone the
2426 * context into our context list here.
2428 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2431 struct md_device *next = mdt->mdt_child;
2432 struct llog_ctxt *ctxt;
2435 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2438 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2439 if (rc || ctxt == NULL) {
2443 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2445 CERROR("Can't set mdt ctxt %d\n", rc);
2450 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2451 struct mdt_device *mdt, int idx)
2453 struct llog_ctxt *ctxt;
2455 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2458 /* Put once for the get we just did, and once for the clone */
2459 llog_ctxt_put(ctxt);
2460 llog_ctxt_put(ctxt);
2465 * sec context handlers
2467 static int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
2469 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2475 * quota request handlers
2477 static int mdt_quota_dqacq(struct tgt_session_info *tsi)
2479 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2480 struct lu_device *qmt = mdt->mdt_qmt_dev;
2485 RETURN(err_serious(-EOPNOTSUPP));
2487 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
2491 struct mdt_object *mdt_object_new(const struct lu_env *env,
2492 struct mdt_device *d,
2493 const struct lu_fid *f)
2495 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2496 struct lu_object *o;
2497 struct mdt_object *m;
2500 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2501 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
2502 if (unlikely(IS_ERR(o)))
2503 m = (struct mdt_object *)o;
2509 struct mdt_object *mdt_object_find(const struct lu_env *env,
2510 struct mdt_device *d,
2511 const struct lu_fid *f)
2513 struct lu_object *o;
2514 struct mdt_object *m;
2517 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2518 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
2519 if (unlikely(IS_ERR(o)))
2520 m = (struct mdt_object *)o;
2528 * Asyncronous commit for mdt device.
2530 * Pass asynchonous commit call down the MDS stack.
2532 * \param env environment
2533 * \param mdt the mdt device
2535 static void mdt_device_commit_async(const struct lu_env *env,
2536 struct mdt_device *mdt)
2538 struct dt_device *dt = mdt->mdt_bottom;
2542 rc = dt->dd_ops->dt_commit_async(env, dt);
2543 if (unlikely(rc != 0))
2544 CWARN("%s: async commit start failed: rc = %d\n",
2545 mdt_obd_name(mdt), rc);
2546 atomic_inc(&mdt->mdt_async_commit_count);
2551 * Mark the lock as "synchonous".
2553 * Mark the lock to deffer transaction commit to the unlock time.
2555 * \param lock the lock to mark as "synchonous"
2557 * \see mdt_is_lock_sync
2558 * \see mdt_save_lock
2560 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2562 lock->l_ast_data = (void*)1;
2566 * Check whehter the lock "synchonous" or not.
2568 * \param lock the lock to check
2569 * \retval 1 the lock is "synchonous"
2570 * \retval 0 the lock isn't "synchronous"
2572 * \see mdt_set_lock_sync
2573 * \see mdt_save_lock
2575 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2577 return lock->l_ast_data != NULL;
2581 * Blocking AST for mdt locks.
2583 * Starts transaction commit if in case of COS lock conflict or
2584 * deffers such a commit to the mdt_save_lock.
2586 * \param lock the lock which blocks a request or cancelling lock
2587 * \param desc unused
2588 * \param data unused
2589 * \param flag indicates whether this cancelling or blocking callback
2591 * \see ldlm_blocking_ast_nocheck
2593 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2594 void *data, int flag)
2596 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2597 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2598 bool commit_async = false;
2602 if (flag == LDLM_CB_CANCELING)
2605 lock_res_and_lock(lock);
2606 if (lock->l_blocking_ast != mdt_blocking_ast) {
2607 unlock_res_and_lock(lock);
2610 /* There is no lock conflict if l_blocking_lock == NULL,
2611 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2612 * when the last reference to a local lock was released */
2613 if (lock->l_req_mode & (LCK_PW | LCK_EX) &&
2614 lock->l_blocking_lock != NULL) {
2615 if (mdt_cos_is_enabled(mdt)) {
2616 if (lock->l_client_cookie !=
2617 lock->l_blocking_lock->l_client_cookie)
2618 mdt_set_lock_sync(lock);
2619 } else if (mdt_slc_is_enabled(mdt) &&
2620 ldlm_is_cos_incompat(lock->l_blocking_lock)) {
2621 mdt_set_lock_sync(lock);
2623 * we may do extra commit here, but there is a small
2624 * window to miss a commit: lock was unlocked (saved),
2625 * then a conflict lock queued and we come here, but
2626 * REP-ACK not received, so lock was not converted to
2628 * Fortunately this window is quite small, so the
2629 * extra commit should be rare (not to say distributed
2630 * operation is rare too).
2632 commit_async = true;
2634 } else if (lock->l_req_mode == LCK_COS &&
2635 lock->l_blocking_lock != NULL) {
2636 commit_async = true;
2639 rc = ldlm_blocking_ast_nocheck(lock);
2644 rc = lu_env_init(&env, LCT_LOCAL);
2645 if (unlikely(rc != 0))
2646 CWARN("%s: lu_env initialization failed, cannot "
2647 "start asynchronous commit: rc = %d\n",
2650 mdt_device_commit_async(&env, mdt);
2657 * Blocking AST for cross-MDT lock
2659 * Discard lock from uncommitted_slc_locks and cancel it.
2661 * \param lock the lock which blocks a request or cancelling lock
2662 * \param desc unused
2663 * \param data unused
2664 * \param flag indicates whether this cancelling or blocking callback
2665 * \retval 0 on success
2666 * \retval negative number on error
2668 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2669 void *data, int flag)
2675 case LDLM_CB_BLOCKING: {
2676 struct lustre_handle lockh;
2678 ldlm_lock2handle(lock, &lockh);
2679 rc = ldlm_cli_cancel(&lockh,
2680 ldlm_is_atomic_cb(lock) ? 0 : LCF_ASYNC);
2682 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2687 case LDLM_CB_CANCELING: {
2688 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2689 struct mdt_device *mdt =
2690 mdt_dev(obd->obd_lu_dev->ld_site->ls_top_dev);
2692 LDLM_DEBUG(lock, "Revoke remote lock\n");
2694 /* discard slc lock here so that it can be cleaned anytime,
2695 * especially for cleanup_resource() */
2696 tgt_discard_slc_lock(&mdt->mdt_lut, lock);
2698 /* once we cache lock, l_ast_data is set to mdt_object */
2699 if (lock->l_ast_data != NULL) {
2700 struct mdt_object *mo = lock->l_ast_data;
2703 rc = lu_env_init(&env, LCT_MD_THREAD);
2704 if (unlikely(rc != 0)) {
2705 CWARN("%s: lu_env initialization failed, object"
2706 "%p "DFID" is leaked!\n",
2708 PFID(mdt_object_fid(mo)));
2712 if (lock->l_policy_data.l_inodebits.bits &
2713 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)) {
2714 rc = mo_invalidate(&env, mdt_object_child(mo));
2715 mo->mot_cache_attr = 0;
2717 mdt_object_put(&env, mo);
2729 int mdt_check_resent_lock(struct mdt_thread_info *info,
2730 struct mdt_object *mo,
2731 struct mdt_lock_handle *lhc)
2733 /* the lock might already be gotten in ldlm_handle_enqueue() */
2734 if (unlikely(lustre_handle_is_used(&lhc->mlh_reg_lh))) {
2735 struct ptlrpc_request *req = mdt_info_req(info);
2736 struct ldlm_lock *lock;
2738 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
2739 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
2741 /* Lock is pinned by ldlm_handle_enqueue0() as it is
2742 * a resend case, however, it could be already destroyed
2743 * due to client eviction or a raced cancel RPC. */
2744 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx",
2745 lhc->mlh_reg_lh.cookie);
2749 if (!fid_res_name_eq(mdt_object_fid(mo),
2750 &lock->l_resource->lr_name)) {
2751 CWARN("%s: Although resent, but still not "
2752 "get child lock:"DFID"\n",
2753 info->mti_exp->exp_obd->obd_name,
2754 PFID(mdt_object_fid(mo)));
2755 LDLM_LOCK_PUT(lock);
2758 LDLM_LOCK_PUT(lock);
2764 int mdt_remote_object_lock_try(struct mdt_thread_info *mti,
2765 struct mdt_object *o, const struct lu_fid *fid,
2766 struct lustre_handle *lh, enum ldlm_mode mode,
2767 __u64 *ibits, __u64 trybits, bool cache)
2769 struct ldlm_enqueue_info *einfo = &mti->mti_einfo;
2770 union ldlm_policy_data *policy = &mti->mti_policy;
2771 struct ldlm_res_id *res_id = &mti->mti_res_id;
2775 LASSERT(mdt_object_remote(o));
2777 fid_build_reg_res_name(fid, res_id);
2779 memset(einfo, 0, sizeof(*einfo));
2780 einfo->ei_type = LDLM_IBITS;
2781 einfo->ei_mode = mode;
2782 einfo->ei_cb_bl = mdt_remote_blocking_ast;
2783 einfo->ei_cb_cp = ldlm_completion_ast;
2784 einfo->ei_enq_slave = 0;
2785 einfo->ei_res_id = res_id;
2789 * if we cache lock, couple lock with mdt_object, so that object
2790 * can be easily found in lock ASTs.
2792 mdt_object_get(mti->mti_env, o);
2793 einfo->ei_cbdata = o;
2797 memset(policy, 0, sizeof(*policy));
2798 policy->l_inodebits.bits = *ibits;
2799 policy->l_inodebits.try_bits = trybits;
2801 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
2803 if (rc < 0 && cache) {
2804 mdt_object_put(mti->mti_env, o);
2805 einfo->ei_cbdata = NULL;
2808 /* Return successfully acquired bits to a caller */
2810 struct ldlm_lock *lock = ldlm_handle2lock(lh);
2813 *ibits = lock->l_policy_data.l_inodebits.bits;
2814 LDLM_LOCK_PUT(lock);
2819 int mdt_remote_object_lock(struct mdt_thread_info *mti, struct mdt_object *o,
2820 const struct lu_fid *fid, struct lustre_handle *lh,
2821 enum ldlm_mode mode, __u64 ibits, bool cache)
2823 return mdt_remote_object_lock_try(mti, o, fid, lh, mode, &ibits, 0,
2827 static int mdt_object_local_lock(struct mdt_thread_info *info,
2828 struct mdt_object *o,
2829 struct mdt_lock_handle *lh, __u64 *ibits,
2830 __u64 trybits, bool cos_incompat)
2832 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2833 union ldlm_policy_data *policy = &info->mti_policy;
2834 struct ldlm_res_id *res_id = &info->mti_res_id;
2839 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2840 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2841 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2842 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2845 LASSERT(lh->mlh_reg_mode == LCK_PW ||
2846 lh->mlh_reg_mode == LCK_EX);
2847 dlmflags |= LDLM_FL_COS_INCOMPAT;
2848 } else if (mdt_cos_is_enabled(info->mti_mdt)) {
2849 dlmflags |= LDLM_FL_COS_ENABLED;
2852 /* Only enqueue LOOKUP lock for remote object */
2853 LASSERT(ergo(mdt_object_remote(o), *ibits == MDS_INODELOCK_LOOKUP));
2855 if (lh->mlh_type == MDT_PDO_LOCK) {
2856 /* check for exists after object is locked */
2857 if (mdt_object_exists(o) == 0) {
2858 /* Non-existent object shouldn't have PDO lock */
2861 /* Non-dir object shouldn't have PDO lock */
2862 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
2868 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2869 dlmflags |= LDLM_FL_ATOMIC_CB;
2872 * Take PDO lock on whole directory and build correct @res_id for lock
2873 * on part of directory.
2875 if (lh->mlh_pdo_hash != 0) {
2876 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2877 mdt_lock_pdo_mode(info, o, lh);
2878 if (lh->mlh_pdo_mode != LCK_NL) {
2880 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2881 * is never going to be sent to client and we do not
2882 * want it slowed down due to possible cancels.
2884 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2885 policy->l_inodebits.try_bits = 0;
2886 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2887 policy, res_id, dlmflags,
2888 info->mti_exp == NULL ? NULL :
2889 &info->mti_exp->exp_handle.h_cookie);
2890 if (unlikely(rc != 0))
2891 GOTO(out_unlock, rc);
2895 * Finish res_id initializing by name hash marking part of
2896 * directory which is taking modification.
2898 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2901 policy->l_inodebits.bits = *ibits;
2902 policy->l_inodebits.try_bits = trybits;
2905 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2906 * going to be sent to client. If it is - mdt_intent_policy() path will
2907 * fix it up and turn FL_LOCAL flag off.
2909 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2910 res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
2911 info->mti_exp == NULL ? NULL :
2912 &info->mti_exp->exp_handle.h_cookie);
2915 mdt_object_unlock(info, o, lh, 1);
2916 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2917 lh->mlh_pdo_hash != 0 &&
2918 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
2919 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2921 /* Return successfully acquired bits to a caller */
2923 struct ldlm_lock *lock = ldlm_handle2lock(&lh->mlh_reg_lh);
2926 *ibits = lock->l_policy_data.l_inodebits.bits;
2927 LDLM_LOCK_PUT(lock);
2933 mdt_object_lock_internal(struct mdt_thread_info *info, struct mdt_object *o,
2934 struct mdt_lock_handle *lh, __u64 *ibits,
2935 __u64 trybits, bool cos_incompat)
2937 struct mdt_lock_handle *local_lh = NULL;
2941 if (!mdt_object_remote(o)) {
2942 rc = mdt_object_local_lock(info, o, lh, ibits, trybits,
2947 /* XXX do not support PERM/LAYOUT/XATTR lock for remote object yet */
2948 *ibits &= ~(MDS_INODELOCK_PERM | MDS_INODELOCK_LAYOUT |
2949 MDS_INODELOCK_XATTR);
2951 /* Only enqueue LOOKUP lock for remote object */
2952 if (*ibits & MDS_INODELOCK_LOOKUP) {
2953 __u64 local = MDS_INODELOCK_LOOKUP;
2955 rc = mdt_object_local_lock(info, o, lh, &local, 0,
2963 if ((*ibits | trybits) & MDS_INODELOCK_UPDATE) {
2964 /* Sigh, PDO needs to enqueue 2 locks right now, but
2965 * enqueue RPC can only request 1 lock, to avoid extra
2966 * RPC, so it will instead enqueue EX lock for remote
2967 * object anyway XXX*/
2968 if (lh->mlh_type == MDT_PDO_LOCK &&
2969 lh->mlh_pdo_hash != 0) {
2970 CDEBUG(D_INFO, "%s: "DFID" convert PDO lock to"
2971 "EX lock.\n", mdt_obd_name(info->mti_mdt),
2972 PFID(mdt_object_fid(o)));
2973 lh->mlh_pdo_hash = 0;
2974 lh->mlh_rreg_mode = LCK_EX;
2975 lh->mlh_type = MDT_REG_LOCK;
2978 rc = mdt_remote_object_lock_try(info, o, mdt_object_fid(o),
2981 ibits, trybits, false);
2982 if (rc != ELDLM_OK) {
2983 if (local_lh != NULL)
2984 mdt_object_unlock(info, o, local_lh, rc);
2992 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2993 struct mdt_lock_handle *lh, __u64 ibits)
2995 return mdt_object_lock_internal(info, o, lh, &ibits, 0, false);
2998 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2999 struct mdt_lock_handle *lh, __u64 ibits,
3002 LASSERT(lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX);
3003 return mdt_object_lock_internal(info, o, lh, &ibits, 0,
3007 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
3008 struct mdt_lock_handle *lh, __u64 *ibits,
3009 __u64 trybits, bool cos_incompat)
3011 bool trylock_only = *ibits == 0;
3014 LASSERT(!(*ibits & trybits));
3015 rc = mdt_object_lock_internal(info, o, lh, ibits, trybits,
3017 if (rc && trylock_only) { /* clear error for try ibits lock only */
3018 LASSERT(*ibits == 0);
3025 * Save a lock within request object.
3027 * Keep the lock referenced until whether client ACK or transaction
3028 * commit happens or release the lock immediately depending on input
3029 * parameters. If COS is ON, a write lock is converted to COS lock
3032 * \param info thead info object
3033 * \param h lock handle
3034 * \param mode lock mode
3035 * \param decref force immediate lock releasing
3037 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
3038 enum ldlm_mode mode, int decref)
3042 if (lustre_handle_is_used(h)) {
3043 if (decref || !info->mti_has_trans ||
3044 !(mode & (LCK_PW | LCK_EX))) {
3045 mdt_fid_unlock(h, mode);
3047 struct mdt_device *mdt = info->mti_mdt;
3048 struct ldlm_lock *lock = ldlm_handle2lock(h);
3049 struct ptlrpc_request *req = mdt_info_req(info);
3050 bool cos = mdt_cos_is_enabled(mdt);
3051 bool convert_lock = !cos && mdt_slc_is_enabled(mdt);
3053 LASSERTF(lock != NULL, "no lock for cookie %#llx\n",
3056 /* there is no request if mdt_object_unlock() is called
3057 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
3058 if (likely(req != NULL)) {
3059 LDLM_DEBUG(lock, "save lock request %p reply "
3060 "state %p transno %lld\n", req,
3061 req->rq_reply_state, req->rq_transno);
3063 ldlm_lock_mode_downgrade(lock, LCK_COS);
3066 if (req->rq_export->exp_disconnected)
3067 mdt_fid_unlock(h, mode);
3069 ptlrpc_save_lock(req, h, mode, cos,
3072 mdt_fid_unlock(h, mode);
3074 if (mdt_is_lock_sync(lock)) {
3075 CDEBUG(D_HA, "found sync-lock,"
3076 " async commit started\n");
3077 mdt_device_commit_async(info->mti_env,
3080 LDLM_LOCK_PUT(lock);
3089 * Save cross-MDT lock in uncommitted_slc_locks
3091 * Keep the lock referenced until transaction commit happens or release the lock
3092 * immediately depending on input parameters.
3094 * \param info thead info object
3095 * \param h lock handle
3096 * \param mode lock mode
3097 * \param decref force immediate lock releasing
3099 static void mdt_save_remote_lock(struct mdt_thread_info *info,
3100 struct mdt_object *o, struct lustre_handle *h,
3101 enum ldlm_mode mode, int decref)
3105 if (lustre_handle_is_used(h)) {
3106 struct ldlm_lock *lock = ldlm_handle2lock(h);
3109 (lock->l_policy_data.l_inodebits.bits &
3110 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)))
3111 mo_invalidate(info->mti_env, mdt_object_child(o));
3113 if (decref || !info->mti_has_trans ||
3114 !(mode & (LCK_PW | LCK_EX))) {
3115 ldlm_lock_decref_and_cancel(h, mode);
3116 LDLM_LOCK_PUT(lock);
3118 struct ptlrpc_request *req = mdt_info_req(info);
3120 LASSERT(req != NULL);
3121 tgt_save_slc_lock(&info->mti_mdt->mdt_lut, lock,
3123 ldlm_lock_decref(h, mode);
3132 * Unlock mdt object.
3134 * Immeditely release the regular lock and the PDO lock or save the
3135 * lock in request and keep them referenced until client ACK or
3136 * transaction commit.
3138 * \param info thread info object
3139 * \param o mdt object
3140 * \param lh mdt lock handle referencing regular and PDO locks
3141 * \param decref force immediate lock releasing
3143 * XXX o is not used and may be NULL, see hsm_cdt_request_completed().
3145 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
3146 struct mdt_lock_handle *lh, int decref)
3150 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
3151 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
3152 mdt_save_remote_lock(info, o, &lh->mlh_rreg_lh, lh->mlh_rreg_mode,
3158 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
3159 const struct lu_fid *f,
3160 struct mdt_lock_handle *lh,
3163 struct mdt_object *o;
3165 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
3169 rc = mdt_object_lock(info, o, lh, ibits);
3171 mdt_object_put(info->mti_env, o);
3178 void mdt_object_unlock_put(struct mdt_thread_info * info,
3179 struct mdt_object * o,
3180 struct mdt_lock_handle *lh,
3183 mdt_object_unlock(info, o, lh, decref);
3184 mdt_object_put(info->mti_env, o);
3188 * Generic code handling requests that have struct mdt_body passed in:
3190 * - extract mdt_body from request and save it in @info, if present;
3192 * - create lu_object, corresponding to the fid in mdt_body, and save it in
3195 * - if HABEO_CORPUS flag is set for this request type check whether object
3196 * actually exists on storage (lu_object_exists()).
3199 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
3201 const struct mdt_body *body;
3202 struct mdt_object *obj;
3203 const struct lu_env *env;
3204 struct req_capsule *pill;
3208 env = info->mti_env;
3209 pill = info->mti_pill;
3211 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
3215 if (!(body->mbo_valid & OBD_MD_FLID))
3218 if (!fid_is_sane(&body->mbo_fid1)) {
3219 CERROR("Invalid fid: "DFID"\n", PFID(&body->mbo_fid1));
3223 obj = mdt_object_find(env, info->mti_mdt, &body->mbo_fid1);
3225 if ((flags & HABEO_CORPUS) && !mdt_object_exists(obj)) {
3226 mdt_object_put(env, obj);
3229 info->mti_object = obj;
3238 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
3240 struct req_capsule *pill = info->mti_pill;
3244 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
3245 rc = mdt_body_unpack(info, flags);
3249 if (rc == 0 && (flags & HABEO_REFERO)) {
3251 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
3252 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
3254 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
3255 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
3258 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
3259 * by default. If the target object has more ACL entries, then
3260 * enlarge the buffer when necessary. */
3261 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
3262 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
3263 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
3265 rc = req_capsule_server_pack(pill);
3270 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
3272 lh->mlh_type = MDT_NUL_LOCK;
3273 lh->mlh_reg_lh.cookie = 0ull;
3274 lh->mlh_reg_mode = LCK_MINMODE;
3275 lh->mlh_pdo_lh.cookie = 0ull;
3276 lh->mlh_pdo_mode = LCK_MINMODE;
3277 lh->mlh_rreg_lh.cookie = 0ull;
3278 lh->mlh_rreg_mode = LCK_MINMODE;
3281 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
3283 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3284 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3288 * Initialize fields of struct mdt_thread_info. Other fields are left in
3289 * uninitialized state, because it's too expensive to zero out whole
3290 * mdt_thread_info (> 1K) on each request arrival.
3292 void mdt_thread_info_init(struct ptlrpc_request *req,
3293 struct mdt_thread_info *info)
3297 info->mti_pill = &req->rq_pill;
3300 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3301 mdt_lock_handle_init(&info->mti_lh[i]);
3303 /* mdt device: it can be NULL while CONNECT */
3304 if (req->rq_export) {
3305 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
3306 info->mti_exp = req->rq_export;
3308 info->mti_mdt = NULL;
3309 info->mti_env = req->rq_svc_thread->t_env;
3310 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
3312 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
3313 info->mti_big_buf = LU_BUF_NULL;
3314 info->mti_body = NULL;
3315 info->mti_object = NULL;
3316 info->mti_dlm_req = NULL;
3317 info->mti_has_trans = 0;
3318 info->mti_cross_ref = 0;
3319 info->mti_opdata = 0;
3320 info->mti_big_lmm_used = 0;
3321 info->mti_big_acl_used = 0;
3322 info->mti_som_valid = 0;
3324 info->mti_spec.no_create = 0;
3325 info->mti_spec.sp_rm_entry = 0;
3326 info->mti_spec.sp_permitted = 0;
3327 info->mti_spec.sp_migrate_close = 0;
3329 info->mti_spec.u.sp_ea.eadata = NULL;
3330 info->mti_spec.u.sp_ea.eadatalen = 0;
3333 void mdt_thread_info_fini(struct mdt_thread_info *info)
3337 if (info->mti_object != NULL) {
3338 mdt_object_put(info->mti_env, info->mti_object);
3339 info->mti_object = NULL;
3342 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3343 mdt_lock_handle_fini(&info->mti_lh[i]);
3344 info->mti_env = NULL;
3345 info->mti_pill = NULL;
3346 info->mti_exp = NULL;
3348 if (unlikely(info->mti_big_buf.lb_buf != NULL))
3349 lu_buf_free(&info->mti_big_buf);
3352 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
3354 struct mdt_thread_info *mti;
3356 mti = mdt_th_info(tsi->tsi_env);
3357 LASSERT(mti != NULL);
3359 mdt_thread_info_init(tgt_ses_req(tsi), mti);
3360 if (tsi->tsi_corpus != NULL) {
3361 mti->mti_object = mdt_obj(tsi->tsi_corpus);
3362 lu_object_get(tsi->tsi_corpus);
3364 mti->mti_body = tsi->tsi_mdt_body;
3365 mti->mti_dlm_req = tsi->tsi_dlm_req;
3370 static int mdt_tgt_connect(struct tgt_session_info *tsi)
3372 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_DELAY_CONDITIONAL) &&
3374 tsi2mdt_info(tsi)->mti_mdt->mdt_seq_site.ss_node_id) {
3375 set_current_state(TASK_UNINTERRUPTIBLE);
3376 schedule_timeout(msecs_to_jiffies(3 * MSEC_PER_SEC));
3379 return tgt_connect(tsi);
3399 static int mdt_intent_getattr(enum mdt_it_code opcode,
3400 struct mdt_thread_info *info,
3401 struct ldlm_lock **, __u64);
3403 static int mdt_intent_getxattr(enum mdt_it_code opcode,
3404 struct mdt_thread_info *info,
3405 struct ldlm_lock **lockp,
3408 static int mdt_intent_layout(enum mdt_it_code opcode,
3409 struct mdt_thread_info *info,
3410 struct ldlm_lock **,
3412 static int mdt_intent_reint(enum mdt_it_code opcode,
3413 struct mdt_thread_info *info,
3414 struct ldlm_lock **,
3416 static int mdt_intent_glimpse(enum mdt_it_code opcode,
3417 struct mdt_thread_info *info,
3418 struct ldlm_lock **lockp, __u64 flags)
3420 return mdt_glimpse_enqueue(info, info->mti_mdt->mdt_namespace,
3423 static int mdt_intent_brw(enum mdt_it_code opcode,
3424 struct mdt_thread_info *info,
3425 struct ldlm_lock **lockp, __u64 flags)
3427 return mdt_brw_enqueue(info, info->mti_mdt->mdt_namespace,
3431 static struct mdt_it_flavor {
3432 const struct req_format *it_fmt;
3434 int (*it_act)(enum mdt_it_code ,
3435 struct mdt_thread_info *,
3436 struct ldlm_lock **,
3439 } mdt_it_flavor[] = {
3441 .it_fmt = &RQF_LDLM_INTENT,
3442 /*.it_flags = HABEO_REFERO,*/
3444 .it_act = mdt_intent_reint,
3445 .it_reint = REINT_OPEN
3448 .it_fmt = &RQF_LDLM_INTENT,
3450 * OCREAT is not a MUTABOR request as if the file
3452 * We do the extra check of OBD_CONNECT_RDONLY in
3453 * mdt_reint_open() when we really need to create
3457 .it_act = mdt_intent_reint,
3458 .it_reint = REINT_OPEN
3461 .it_fmt = &RQF_LDLM_INTENT,
3462 .it_flags = MUTABOR,
3463 .it_act = mdt_intent_reint,
3464 .it_reint = REINT_CREATE
3466 [MDT_IT_GETATTR] = {
3467 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3468 .it_flags = HABEO_REFERO,
3469 .it_act = mdt_intent_getattr
3471 [MDT_IT_READDIR] = {
3477 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3478 .it_flags = HABEO_REFERO,
3479 .it_act = mdt_intent_getattr
3482 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
3483 .it_flags = MUTABOR,
3485 .it_reint = REINT_UNLINK
3489 .it_flags = MUTABOR,
3492 [MDT_IT_GETXATTR] = {
3493 .it_fmt = &RQF_LDLM_INTENT_GETXATTR,
3494 .it_flags = HABEO_CORPUS,
3495 .it_act = mdt_intent_getxattr
3498 .it_fmt = &RQF_LDLM_INTENT_LAYOUT,
3500 .it_act = mdt_intent_layout
3502 [MDT_IT_GLIMPSE] = {
3503 .it_fmt = &RQF_LDLM_INTENT,
3505 .it_act = mdt_intent_glimpse,
3508 .it_fmt = &RQF_LDLM_INTENT,
3510 .it_act = mdt_intent_brw,
3515 int mdt_intent_lock_replace(struct mdt_thread_info *info,
3516 struct ldlm_lock **lockp,
3517 struct mdt_lock_handle *lh,
3518 __u64 flags, int result)
3520 struct ptlrpc_request *req = mdt_info_req(info);
3521 struct ldlm_lock *lock = *lockp;
3522 struct ldlm_lock *new_lock;
3524 /* If possible resent found a lock, @lh is set to its handle */
3525 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3527 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3528 lh->mlh_reg_lh.cookie = 0;
3532 if (new_lock == NULL && (flags & LDLM_FL_RESENT)) {
3533 /* Lock is pinned by ldlm_handle_enqueue0() as it is
3534 * a resend case, however, it could be already destroyed
3535 * due to client eviction or a raced cancel RPC. */
3536 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx\n",
3537 lh->mlh_reg_lh.cookie);
3538 lh->mlh_reg_lh.cookie = 0;
3542 LASSERTF(new_lock != NULL,
3543 "lockh %#llx flags %#llx : rc = %d\n",
3544 lh->mlh_reg_lh.cookie, flags, result);
3547 * If we've already given this lock to a client once, then we should
3548 * have no readers or writers. Otherwise, we should have one reader
3549 * _or_ writer ref (which will be zeroed below) before returning the
3552 if (new_lock->l_export == req->rq_export) {
3553 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3555 LASSERT(new_lock->l_export == NULL);
3556 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3561 if (new_lock->l_export == req->rq_export) {
3563 * Already gave this to the client, which means that we
3564 * reconstructed a reply.
3566 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3569 LDLM_LOCK_RELEASE(new_lock);
3570 lh->mlh_reg_lh.cookie = 0;
3571 RETURN(ELDLM_LOCK_REPLACED);
3575 * Fixup the lock to be given to the client.
3577 lock_res_and_lock(new_lock);
3578 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3579 * possible blocking AST. */
3580 while (new_lock->l_readers > 0) {
3581 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3582 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3583 new_lock->l_readers--;
3585 while (new_lock->l_writers > 0) {
3586 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3587 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3588 new_lock->l_writers--;
3591 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3592 new_lock->l_blocking_ast = lock->l_blocking_ast;
3593 new_lock->l_completion_ast = lock->l_completion_ast;
3594 if (ldlm_has_dom(new_lock))
3595 new_lock->l_glimpse_ast = ldlm_server_glimpse_ast;
3596 new_lock->l_remote_handle = lock->l_remote_handle;
3597 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3599 unlock_res_and_lock(new_lock);
3601 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3602 &new_lock->l_remote_handle,
3603 &new_lock->l_exp_hash);
3605 LDLM_LOCK_RELEASE(new_lock);
3606 lh->mlh_reg_lh.cookie = 0;
3608 RETURN(ELDLM_LOCK_REPLACED);
3611 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3612 struct ldlm_lock *new_lock,
3613 struct mdt_lock_handle *lh, __u64 flags)
3615 struct ptlrpc_request *req = mdt_info_req(info);
3616 struct ldlm_request *dlmreq;
3618 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3621 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3623 /* Check if this is a resend case (MSG_RESENT is set on RPC) and a
3624 * lock was found by ldlm_handle_enqueue(); if so @lh must be
3626 if (flags & LDLM_FL_RESENT) {
3627 lh->mlh_reg_lh.cookie = new_lock->l_handle.h_cookie;
3628 lh->mlh_reg_mode = new_lock->l_granted_mode;
3630 LDLM_DEBUG(new_lock, "Restoring lock cookie");
3631 DEBUG_REQ(D_DLMTRACE, req, "restoring lock cookie %#llx",
3632 lh->mlh_reg_lh.cookie);
3637 * If the xid matches, then we know this is a resent request, and allow
3638 * it. (It's probably an OPEN, for which we don't send a lock.
3640 if (req_can_reconstruct(req, NULL))
3644 * This remote handle isn't enqueued, so we never received or processed
3645 * this request. Clear MSG_RESENT, because it can be handled like any
3646 * normal request now.
3648 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3650 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle %#llx",
3651 dlmreq->lock_handle[0].cookie);
3654 static int mdt_intent_getxattr(enum mdt_it_code opcode,
3655 struct mdt_thread_info *info,
3656 struct ldlm_lock **lockp,
3659 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3660 struct ldlm_reply *ldlm_rep = NULL;
3665 * Initialize lhc->mlh_reg_lh either from a previously granted lock
3666 * (for the resend case) or a new lock. Below we will use it to
3667 * replace the original lock.
3669 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3670 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3671 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
3672 rc = mdt_object_lock(info, info->mti_object, lhc,
3673 MDS_INODELOCK_XATTR);
3678 rc = mdt_getxattr(info);
3680 if (mdt_info_req(info)->rq_repmsg != NULL)
3681 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3683 if (ldlm_rep == NULL ||
3684 OBD_FAIL_CHECK(OBD_FAIL_MDS_XATTR_REP)) {
3685 mdt_object_unlock(info, info->mti_object, lhc, 1);
3686 RETURN(err_serious(-EFAULT));
3689 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3691 /* This is left for interop instead of adding a new interop flag.
3693 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(3, 0, 0, 0)
3694 if (ldlm_rep->lock_policy_res2) {
3695 mdt_object_unlock(info, info->mti_object, lhc, 1);
3696 RETURN(ELDLM_LOCK_ABORTED);
3700 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3704 static int mdt_intent_getattr(enum mdt_it_code opcode,
3705 struct mdt_thread_info *info,
3706 struct ldlm_lock **lockp,
3709 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3711 struct ldlm_reply *ldlm_rep;
3712 struct mdt_body *reqbody;
3713 struct mdt_body *repbody;
3717 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3720 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3723 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
3724 repbody->mbo_eadatasize = 0;
3725 repbody->mbo_aclsize = 0;
3729 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
3731 case MDT_IT_GETATTR:
3732 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
3736 CERROR("Unsupported intent (%d)\n", opcode);
3737 GOTO(out_shrink, rc = -EINVAL);
3740 rc = mdt_init_ucred_intent_getattr(info, reqbody);
3742 GOTO(out_shrink, rc);
3744 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3745 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3747 /* Get lock from request for possible resent case. */
3748 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3750 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3751 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3753 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3754 ldlm_rep->lock_policy_res2 = 0;
3755 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3756 ldlm_rep->lock_policy_res2) {
3757 lhc->mlh_reg_lh.cookie = 0ull;
3758 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3761 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3764 mdt_exit_ucred(info);
3766 mdt_client_compatibility(info);
3767 rc2 = mdt_fix_reply(info);
3773 static int mdt_intent_layout(enum mdt_it_code opcode,
3774 struct mdt_thread_info *info,
3775 struct ldlm_lock **lockp,
3778 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_LAYOUT];
3779 struct md_layout_change layout = { .mlc_opc = MD_LAYOUT_NOP };
3780 struct layout_intent *intent;
3781 struct lu_fid *fid = &info->mti_tmp_fid2;
3782 struct mdt_object *obj = NULL;
3783 int layout_size = 0;
3787 if (opcode != MDT_IT_LAYOUT) {
3788 CERROR("%s: Unknown intent (%d)\n", mdt_obd_name(info->mti_mdt),
3793 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
3795 intent = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
3799 CDEBUG(D_INFO, DFID "got layout change request from client: "
3800 "opc:%u flags:%#x extent "DEXT"\n",
3801 PFID(fid), intent->li_opc, intent->li_flags,
3802 PEXT(&intent->li_extent));
3804 switch (intent->li_opc) {
3805 case LAYOUT_INTENT_TRUNC:
3806 case LAYOUT_INTENT_WRITE:
3807 layout.mlc_opc = MD_LAYOUT_WRITE;
3808 layout.mlc_intent = intent;
3810 case LAYOUT_INTENT_ACCESS:
3812 case LAYOUT_INTENT_READ:
3813 case LAYOUT_INTENT_GLIMPSE:
3814 case LAYOUT_INTENT_RELEASE:
3815 case LAYOUT_INTENT_RESTORE:
3816 CERROR("%s: Unsupported layout intent opc %d\n",
3817 mdt_obd_name(info->mti_mdt), intent->li_opc);
3821 CERROR("%s: Unknown layout intent opc %d\n",
3822 mdt_obd_name(info->mti_mdt), intent->li_opc);
3829 /* Get lock from request for possible resent case. */
3830 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3832 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
3834 GOTO(out, rc = PTR_ERR(obj));
3837 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
3838 /* if layout is going to be changed don't use the current EA
3839 * size but the maximum one. That buffer will be shrinked
3840 * to the actual size in req_capsule_shrink() before reply.
3842 if (layout.mlc_opc == MD_LAYOUT_WRITE) {
3843 layout_size = info->mti_mdt->mdt_max_mdsize;
3845 layout_size = mdt_attr_get_eabuf_size(info, obj);
3846 if (layout_size < 0)
3847 GOTO(out_obj, rc = layout_size);
3849 if (layout_size > info->mti_mdt->mdt_max_mdsize)
3850 info->mti_mdt->mdt_max_mdsize = layout_size;
3855 * set reply buffer size, so that ldlm_handle_enqueue0()->
3856 * ldlm_lvbo_fill() will fill the reply buffer with lovea.
3858 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
3859 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
3861 rc = req_capsule_server_pack(info->mti_pill);
3866 if (layout.mlc_opc != MD_LAYOUT_NOP) {
3867 struct lu_buf *buf = &layout.mlc_buf;
3870 * mdt_layout_change is a reint operation, when the request
3871 * is resent, layout write shouldn't reprocess it again.
3873 rc = mdt_check_resent(info, mdt_reconstruct_generic, lhc);
3875 GOTO(out_obj, rc = rc < 0 ? rc : 0);
3878 * There is another resent case: the client's job has been
3879 * done by another client, referring lod_declare_layout_change
3880 * -EALREADY case, and it became a operation w/o transaction,
3881 * so we should not do the layout change, otherwise
3882 * mdt_layout_change() will try to cancel the granted server
3883 * CR lock whose remote counterpart is still in hold on the
3884 * client, and a deadlock ensues.
3886 rc = mdt_check_resent_lock(info, obj, lhc);
3892 if (unlikely(req_is_replay(mdt_info_req(info)))) {
3893 buf->lb_buf = req_capsule_client_get(info->mti_pill,
3895 buf->lb_len = req_capsule_get_size(info->mti_pill,
3896 &RMF_EADATA, RCL_CLIENT);
3898 * If it's a replay of layout write intent RPC, the
3899 * client has saved the extended lovea when
3900 * it get reply then.
3902 if (buf->lb_len > 0)
3903 mdt_fix_lov_magic(info, buf->lb_buf);
3906 * Instantiate some layout components, if @buf contains
3907 * lovea, then it's a replay of the layout intent write
3910 rc = mdt_layout_change(info, obj, &layout);
3915 mdt_object_put(info->mti_env, obj);
3917 if (rc == 0 && lustre_handle_is_used(&lhc->mlh_reg_lh))
3918 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3921 lhc->mlh_reg_lh.cookie = 0;
3926 static int mdt_intent_reint(enum mdt_it_code opcode,
3927 struct mdt_thread_info *info,
3928 struct ldlm_lock **lockp,
3931 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3932 struct ldlm_reply *rep = NULL;
3936 static const struct req_format *intent_fmts[REINT_MAX] = {
3937 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3938 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3943 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
3947 if (mdt_it_flavor[opcode].it_reint != opc) {
3948 CERROR("Reint code %ld doesn't match intent: %d\n",
3950 RETURN(err_serious(-EPROTO));
3953 /* Get lock from request for possible resent case. */
3954 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3956 rc = mdt_reint_internal(info, lhc, opc);
3958 /* Check whether the reply has been packed successfully. */
3959 if (mdt_info_req(info)->rq_repmsg != NULL)
3960 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3962 RETURN(err_serious(-EFAULT));
3964 /* MDC expects this in any case */
3966 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3968 /* the open lock or the lock for cross-ref object should be
3969 * returned to the client */
3970 if (lustre_handle_is_used(&lhc->mlh_reg_lh) &&
3971 (rc == 0 || rc == -MDT_EREMOTE_OPEN)) {
3972 rep->lock_policy_res2 = 0;
3973 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3977 rep->lock_policy_res2 = clear_serious(rc);
3979 if (rep->lock_policy_res2 == -ENOENT &&
3980 mdt_get_disposition(rep, DISP_LOOKUP_NEG) &&
3981 !mdt_get_disposition(rep, DISP_OPEN_CREATE))
3982 rep->lock_policy_res2 = 0;
3984 lhc->mlh_reg_lh.cookie = 0ull;
3985 if (rc == -ENOTCONN || rc == -ENODEV ||
3986 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3988 * If it is the disconnect error (ENODEV & ENOCONN), the error
3989 * will be returned by rq_status, and client at ptlrpc layer
3990 * will detect this, then disconnect, reconnect the import
3991 * immediately, instead of impacting the following the rpc.
3996 * For other cases, the error will be returned by intent, and client
3997 * will retrieve the result from intent.
3999 RETURN(ELDLM_LOCK_ABORTED);
4002 static int mdt_intent_code(enum ldlm_intent_flags itcode)
4010 case IT_OPEN|IT_CREAT:
4017 rc = MDT_IT_READDIR;
4020 rc = MDT_IT_GETATTR;
4032 rc = MDT_IT_GETXATTR;
4037 case IT_QUOTA_DQACQ:
4042 rc = MDT_IT_GLIMPSE;
4048 CERROR("Unknown intent opcode: 0x%08x\n", itcode);
4055 static int mdt_intent_opc(enum ldlm_intent_flags itopc,
4056 struct mdt_thread_info *info,
4057 struct ldlm_lock **lockp, __u64 flags)
4059 struct req_capsule *pill = info->mti_pill;
4060 struct ptlrpc_request *req = mdt_info_req(info);
4061 struct mdt_it_flavor *flv;
4066 opc = mdt_intent_code(itopc);
4070 if (opc == MDT_IT_QUOTA) {
4071 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
4074 RETURN(-EOPNOTSUPP);
4076 if (mdt_rdonly(req->rq_export))
4079 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
4080 /* pass the request to quota master */
4081 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
4082 mdt_info_req(info), lockp,
4087 flv = &mdt_it_flavor[opc];
4088 if (flv->it_fmt != NULL)
4089 req_capsule_extend(pill, flv->it_fmt);
4091 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
4095 if (flv->it_flags & MUTABOR && mdt_rdonly(req->rq_export))
4098 if (flv->it_act != NULL) {
4099 struct ldlm_reply *rep;
4101 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_INTENT_DELAY, 10);
4103 /* execute policy */
4104 rc = flv->it_act(opc, info, lockp, flags);
4106 /* Check whether the reply has been packed successfully. */
4107 if (req->rq_repmsg != NULL) {
4108 rep = req_capsule_server_get(info->mti_pill,
4110 rep->lock_policy_res2 =
4111 ptlrpc_status_hton(rep->lock_policy_res2);
4118 static void mdt_ptlrpc_stats_update(struct ptlrpc_request *req,
4119 enum ldlm_intent_flags it_opc)
4121 struct lprocfs_stats *srv_stats = ptlrpc_req2svc(req)->srv_stats;
4123 /* update stats when IT code is known */
4124 if (srv_stats != NULL)
4125 lprocfs_counter_incr(srv_stats,
4126 PTLRPC_LAST_CNTR + (it_opc == IT_GLIMPSE ?
4127 LDLM_GLIMPSE_ENQUEUE : LDLM_IBITS_ENQUEUE));
4130 static int mdt_intent_policy(struct ldlm_namespace *ns,
4131 struct ldlm_lock **lockp, void *req_cookie,
4132 enum ldlm_mode mode, __u64 flags, void *data)
4134 struct tgt_session_info *tsi;
4135 struct mdt_thread_info *info;
4136 struct ptlrpc_request *req = req_cookie;
4137 struct ldlm_intent *it;
4138 struct req_capsule *pill;
4139 const struct ldlm_lock_desc *ldesc;
4144 LASSERT(req != NULL);
4146 tsi = tgt_ses_info(req->rq_svc_thread->t_env);
4148 info = tsi2mdt_info(tsi);
4149 LASSERT(info != NULL);
4150 pill = info->mti_pill;
4151 LASSERT(pill->rc_req == req);
4152 ldesc = &info->mti_dlm_req->lock_desc;
4154 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
4155 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
4156 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
4158 mdt_ptlrpc_stats_update(req, it->opc);
4159 rc = mdt_intent_opc(it->opc, info, lockp, flags);
4163 /* Lock without inodebits makes no sense and will oops
4164 * later in ldlm. Let's check it now to see if we have
4165 * ibits corrupted somewhere in mdt_intent_opc().
4166 * The case for client miss to set ibits has been
4167 * processed by others. */
4168 LASSERT(ergo(ldesc->l_resource.lr_type == LDLM_IBITS,
4169 ldesc->l_policy_data.l_inodebits.bits != 0));
4171 rc = err_serious(-EFAULT);
4174 /* No intent was provided */
4175 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
4176 rc = req_capsule_server_pack(pill);
4178 rc = err_serious(rc);
4180 mdt_thread_info_fini(info);
4184 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
4186 struct seq_server_site *ss = mdt_seq_site(mdt);
4188 if (ss->ss_node_id == 0)
4191 if (ss->ss_client_seq != NULL) {
4192 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
4193 ss->ss_client_seq->lcs_exp = NULL;
4196 if (ss->ss_server_fld != NULL) {
4197 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
4198 ss->ss_server_fld->lsf_control_exp = NULL;
4202 static void mdt_seq_fini_cli(struct mdt_device *mdt)
4204 struct seq_server_site *ss = mdt_seq_site(mdt);
4209 if (ss->ss_server_seq != NULL)
4210 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
4213 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
4215 mdt_seq_fini_cli(mdt);
4216 mdt_deregister_seq_exp(mdt);
4218 return seq_site_fini(env, mdt_seq_site(mdt));
4222 * It will retrieve its FLDB entries from MDT0, and it only happens
4223 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
4224 * and it needs to refresh FLDB from the MDT0.
4226 static int mdt_register_lwp_callback(void *data)
4229 struct mdt_device *mdt = data;
4230 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
4234 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
4236 rc = lu_env_init(&env, LCT_MD_THREAD);
4238 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
4242 /* Allocate new sequence now to avoid creating local transaction
4243 * in the normal transaction process */
4244 rc = seq_server_check_and_alloc_super(&env,
4245 mdt_seq_site(mdt)->ss_server_seq);
4250 rc = fld_update_from_controller(&env, fld);
4252 CERROR("%s: cannot update controller: rc = %d\n",
4253 mdt_obd_name(mdt), rc);
4262 static int mdt_register_seq_exp(struct mdt_device *mdt)
4264 struct seq_server_site *ss = mdt_seq_site(mdt);
4265 char *lwp_name = NULL;
4268 if (ss->ss_node_id == 0)
4271 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
4272 if (lwp_name == NULL)
4273 GOTO(out_free, rc = -ENOMEM);
4275 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
4279 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
4284 rc = lustre_register_lwp_item(lwp_name,
4285 &ss->ss_server_fld->lsf_control_exp,
4286 mdt_register_lwp_callback, mdt);
4288 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
4289 ss->ss_client_seq->lcs_exp = NULL;
4293 if (lwp_name != NULL)
4294 OBD_FREE(lwp_name, MAX_OBD_NAME);
4300 * Init client sequence manager which is used by local MDS to talk to sequence
4301 * controller on remote node.
4303 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
4305 struct seq_server_site *ss = mdt_seq_site(mdt);
4310 /* check if this is adding the first MDC and controller is not yet
4312 OBD_ALLOC_PTR(ss->ss_client_seq);
4313 if (ss->ss_client_seq == NULL)
4316 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
4317 if (prefix == NULL) {
4318 OBD_FREE_PTR(ss->ss_client_seq);
4319 ss->ss_client_seq = NULL;
4323 /* Note: seq_client_fini will be called in seq_site_fini */
4324 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
4325 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
4326 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
4328 OBD_FREE(prefix, MAX_OBD_NAME + 5);
4330 OBD_FREE_PTR(ss->ss_client_seq);
4331 ss->ss_client_seq = NULL;
4335 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
4340 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
4342 struct seq_server_site *ss;
4346 ss = mdt_seq_site(mdt);
4347 /* init sequence controller server(MDT0) */
4348 if (ss->ss_node_id == 0) {
4349 OBD_ALLOC_PTR(ss->ss_control_seq);
4350 if (ss->ss_control_seq == NULL)
4353 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
4354 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
4357 GOTO(out_seq_fini, rc);
4360 /* Init normal sequence server */
4361 OBD_ALLOC_PTR(ss->ss_server_seq);
4362 if (ss->ss_server_seq == NULL)
4363 GOTO(out_seq_fini, rc = -ENOMEM);
4365 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
4366 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
4368 GOTO(out_seq_fini, rc);
4370 /* init seq client for seq server to talk to seq controller(MDT0) */
4371 rc = mdt_seq_init_cli(env, mdt);
4373 GOTO(out_seq_fini, rc);
4375 if (ss->ss_node_id != 0)
4376 /* register controller export through lwp */
4377 rc = mdt_register_seq_exp(mdt);
4382 mdt_seq_fini(env, mdt);
4390 static int mdt_fld_fini(const struct lu_env *env,
4391 struct mdt_device *m)
4393 struct seq_server_site *ss = mdt_seq_site(m);
4396 if (ss && ss->ss_server_fld) {
4397 fld_server_fini(env, ss->ss_server_fld);
4398 OBD_FREE_PTR(ss->ss_server_fld);
4399 ss->ss_server_fld = NULL;
4405 static int mdt_fld_init(const struct lu_env *env,
4407 struct mdt_device *m)
4409 struct seq_server_site *ss;
4413 ss = mdt_seq_site(m);
4415 OBD_ALLOC_PTR(ss->ss_server_fld);
4416 if (ss->ss_server_fld == NULL)
4417 RETURN(rc = -ENOMEM);
4419 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
4422 OBD_FREE_PTR(ss->ss_server_fld);
4423 ss->ss_server_fld = NULL;
4430 static void mdt_stack_pre_fini(const struct lu_env *env,
4431 struct mdt_device *m, struct lu_device *top)
4433 struct lustre_cfg_bufs *bufs;
4434 struct lustre_cfg *lcfg;
4435 struct mdt_thread_info *info;
4440 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4441 LASSERT(info != NULL);
4443 bufs = &info->mti_u.bufs;
4445 LASSERT(m->mdt_child_exp);
4446 LASSERT(m->mdt_child_exp->exp_obd);
4448 /* process cleanup, pass mdt obd name to get obd umount flags */
4449 /* XXX: this is needed because all layers are referenced by
4450 * objects (some of them are pinned by osd, for example *
4451 * the proper solution should be a model where object used
4452 * by osd only doesn't have mdt/mdd slices -bzzz */
4453 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
4454 lustre_cfg_bufs_set_string(bufs, 1, NULL);
4455 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4458 lustre_cfg_init(lcfg, LCFG_PRE_CLEANUP, bufs);
4460 top->ld_ops->ldo_process_config(env, top, lcfg);
4461 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4465 static void mdt_stack_fini(const struct lu_env *env,
4466 struct mdt_device *m, struct lu_device *top)
4468 struct obd_device *obd = mdt2obd_dev(m);
4469 struct lustre_cfg_bufs *bufs;
4470 struct lustre_cfg *lcfg;
4471 struct mdt_thread_info *info;
4475 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4476 LASSERT(info != NULL);
4478 lu_dev_del_linkage(top->ld_site, top);
4480 lu_site_purge(env, top->ld_site, -1);
4482 bufs = &info->mti_u.bufs;
4483 /* process cleanup, pass mdt obd name to get obd umount flags */
4484 /* another purpose is to let all layers to release their objects */
4485 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
4490 lustre_cfg_bufs_set_string(bufs, 1, flags);
4491 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4494 lustre_cfg_init(lcfg, LCFG_CLEANUP, bufs);
4497 top->ld_ops->ldo_process_config(env, top, lcfg);
4498 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4500 lu_site_purge(env, top->ld_site, -1);
4502 m->mdt_child = NULL;
4503 m->mdt_bottom = NULL;
4505 obd_disconnect(m->mdt_child_exp);
4506 m->mdt_child_exp = NULL;
4508 obd_disconnect(m->mdt_bottom_exp);
4509 m->mdt_child_exp = NULL;
4512 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
4513 const char *next, struct obd_export **exp)
4515 struct obd_connect_data *data = NULL;
4516 struct obd_device *obd;
4520 OBD_ALLOC_PTR(data);
4522 GOTO(out, rc = -ENOMEM);
4524 obd = class_name2obd(next);
4526 CERROR("%s: can't locate next device: %s\n",
4527 mdt_obd_name(m), next);
4528 GOTO(out, rc = -ENOTCONN);
4531 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4532 data->ocd_version = LUSTRE_VERSION_CODE;
4534 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
4536 CERROR("%s: cannot connect to next dev %s (%d)\n",
4537 mdt_obd_name(m), next, rc);
4547 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
4548 struct lustre_cfg *cfg)
4550 char *dev = lustre_cfg_string(cfg, 0);
4551 int rc, name_size, uuid_size;
4552 char *name, *uuid, *p;
4553 struct lustre_cfg_bufs *bufs;
4554 struct lustre_cfg *lcfg;
4555 struct obd_device *obd;
4556 struct lustre_profile *lprof;
4557 struct lu_site *site;
4560 /* in 1.8 we had the only device in the stack - MDS.
4561 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
4562 * in 2.3 OSD is instantiated by obd_mount.c, so we need
4563 * to generate names and setup MDT, MDD. MDT will be using
4564 * generated name to connect to MDD. for MDD the next device
4565 * will be LOD with name taken from so called "profile" which
4566 * is generated by mount_option line
4568 * 1.8 MGS generates config. commands like this:
4569 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
4570 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
4571 * 2.0 MGS generates config. commands like this:
4572 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
4573 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4574 * 3:lustre-MDT0000-mdtlov 4:f
4576 * we generate MDD name from MDT one, just replacing T with D
4578 * after all the preparations, the logical equivalent will be
4579 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
4580 * 3:lustre-MDT0000-mdtlov 4:f
4581 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4582 * 3:lustre-MDD0000 4:f
4584 * notice we build the stack from down to top: MDD first, then MDT */
4586 name_size = MAX_OBD_NAME;
4587 uuid_size = MAX_OBD_NAME;
4589 OBD_ALLOC(name, name_size);
4590 OBD_ALLOC(uuid, uuid_size);
4591 if (name == NULL || uuid == NULL)
4592 GOTO(cleanup_mem, rc = -ENOMEM);
4594 OBD_ALLOC_PTR(bufs);
4596 GOTO(cleanup_mem, rc = -ENOMEM);
4599 p = strstr(name, "-MDT");
4601 GOTO(free_bufs, rc = -ENOMEM);
4604 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
4606 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4607 if (lprof == NULL || lprof->lp_dt == NULL) {
4608 CERROR("can't find the profile: %s\n",
4609 lustre_cfg_string(cfg, 0));
4610 GOTO(free_bufs, rc = -EINVAL);
4613 lustre_cfg_bufs_reset(bufs, name);
4614 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
4615 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4616 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4618 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4620 GOTO(put_profile, rc = -ENOMEM);
4621 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
4623 rc = class_attach(lcfg);
4625 GOTO(lcfg_cleanup, rc);
4627 obd = class_name2obd(name);
4629 CERROR("Can not find obd %s (%s in config)\n",
4630 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
4631 GOTO(lcfg_cleanup, rc = -EINVAL);
4634 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4636 lustre_cfg_bufs_reset(bufs, name);
4637 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4638 lustre_cfg_bufs_set_string(bufs, 2, dev);
4639 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4641 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4643 GOTO(class_detach, rc = -ENOMEM);
4644 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
4646 rc = class_setup(obd, lcfg);
4648 GOTO(class_detach, rc);
4650 /* connect to MDD we just setup */
4651 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
4653 GOTO(class_detach, rc);
4655 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
4657 LASSERT(mdt_lu_site(mdt) == NULL);
4658 mdt->mdt_lu_dev.ld_site = site;
4659 site->ls_top_dev = &mdt->mdt_lu_dev;
4660 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
4662 /* now connect to bottom OSD */
4663 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
4664 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
4666 GOTO(class_detach, rc);
4668 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
4670 rc = lu_env_refill((struct lu_env *)env);
4672 CERROR("Failure to refill session: '%d'\n", rc);
4674 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
4679 class_detach(obd, lcfg);
4681 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4683 class_put_profile(lprof);
4688 OBD_FREE(name, name_size);
4690 OBD_FREE(uuid, uuid_size);
4694 /* setup quota master target on MDT0 */
4695 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
4696 struct lustre_cfg *cfg)
4698 struct obd_device *obd;
4699 char *dev = lustre_cfg_string(cfg, 0);
4700 char *qmtname, *uuid, *p;
4701 struct lustre_cfg_bufs *bufs;
4702 struct lustre_cfg *lcfg;
4703 struct lustre_profile *lprof;
4704 struct obd_connect_data *data;
4708 LASSERT(mdt->mdt_qmt_exp == NULL);
4709 LASSERT(mdt->mdt_qmt_dev == NULL);
4711 /* quota master is on MDT0 only for now */
4712 if (mdt->mdt_seq_site.ss_node_id != 0)
4715 /* MGS generates config commands which look as follows:
4716 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4717 * 3:lustre-MDT0000-mdtlov 4:f
4719 * We generate the QMT name from the MDT one, just replacing MD with QM
4720 * after all the preparations, the logical equivalent will be:
4721 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
4722 * 3:lustre-MDT0000-osd 4:f */
4723 OBD_ALLOC(qmtname, MAX_OBD_NAME);
4724 OBD_ALLOC(uuid, UUID_MAX);
4725 OBD_ALLOC_PTR(bufs);
4726 OBD_ALLOC_PTR(data);
4727 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
4728 GOTO(cleanup_mem, rc = -ENOMEM);
4730 strcpy(qmtname, dev);
4731 p = strstr(qmtname, "-MDT");
4733 GOTO(cleanup_mem, rc = -ENOMEM);
4734 /* replace MD with QM */
4738 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
4740 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4741 if (lprof == NULL || lprof->lp_dt == NULL) {
4742 CERROR("can't find profile for %s\n",
4743 lustre_cfg_string(cfg, 0));
4744 GOTO(cleanup_mem, rc = -EINVAL);
4747 lustre_cfg_bufs_reset(bufs, qmtname);
4748 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
4749 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4750 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4752 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4754 GOTO(put_profile, rc = -ENOMEM);
4755 lustre_cfg_init(lcfg, LCFG_ATTACH, bufs);
4757 rc = class_attach(lcfg);
4759 GOTO(lcfg_cleanup, rc);
4761 obd = class_name2obd(qmtname);
4763 CERROR("Can not find obd %s (%s in config)\n", qmtname,
4764 lustre_cfg_string(cfg, 0));
4765 GOTO(lcfg_cleanup, rc = -EINVAL);
4768 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4770 lustre_cfg_bufs_reset(bufs, qmtname);
4771 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4772 lustre_cfg_bufs_set_string(bufs, 2, dev);
4774 /* for quota, the next device should be the OSD device */
4775 lustre_cfg_bufs_set_string(bufs, 3,
4776 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
4778 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
4780 GOTO(class_detach, rc = -ENOMEM);
4781 lustre_cfg_init(lcfg, LCFG_SETUP, bufs);
4783 rc = class_setup(obd, lcfg);
4785 GOTO(class_detach, rc);
4787 mdt->mdt_qmt_dev = obd->obd_lu_dev;
4789 /* configure local quota objects */
4790 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
4794 GOTO(class_cleanup, rc);
4796 /* connect to quota master target */
4797 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4798 data->ocd_version = LUSTRE_VERSION_CODE;
4799 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
4802 CERROR("cannot connect to quota master device %s (%d)\n",
4804 GOTO(class_cleanup, rc);
4810 class_manual_cleanup(obd);
4811 mdt->mdt_qmt_dev = NULL;
4815 class_detach(obd, lcfg);
4817 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4819 class_put_profile(lprof);
4824 OBD_FREE(qmtname, MAX_OBD_NAME);
4826 OBD_FREE(uuid, UUID_MAX);
4832 /* Shutdown quota master target associated with mdt */
4833 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
4837 if (mdt->mdt_qmt_exp == NULL)
4839 LASSERT(mdt->mdt_qmt_dev != NULL);
4841 /* the qmt automatically shuts down when the mdt disconnects */
4842 obd_disconnect(mdt->mdt_qmt_exp);
4843 mdt->mdt_qmt_exp = NULL;
4844 mdt->mdt_qmt_dev = NULL;
4848 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
4849 * for now. This will be removed along with converting rest of MDT code
4850 * to use tgt_session_info */
4851 static int mdt_tgt_getxattr(struct tgt_session_info *tsi)
4853 struct mdt_thread_info *info = tsi2mdt_info(tsi);
4856 rc = mdt_getxattr(info);
4858 mdt_thread_info_fini(info);
4862 #define OBD_FAIL_OST_READ_NET OBD_FAIL_OST_BRW_NET
4863 #define OBD_FAIL_OST_WRITE_NET OBD_FAIL_OST_BRW_NET
4864 #define OST_BRW_READ OST_READ
4865 #define OST_BRW_WRITE OST_WRITE
4867 static struct tgt_handler mdt_tgt_handlers[] = {
4868 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4869 0, MDS_CONNECT, mdt_tgt_connect,
4870 &RQF_CONNECT, LUSTRE_OBD_VERSION),
4871 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4872 0, MDS_DISCONNECT, tgt_disconnect,
4873 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
4874 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4875 HABEO_REFERO, MDS_SET_INFO, mdt_set_info,
4876 &RQF_OBD_SET_INFO, LUSTRE_MDS_VERSION),
4877 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
4878 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_GET_ROOT, mdt_get_root),
4879 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETATTR, mdt_getattr),
4880 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_GETATTR_NAME,
4882 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETXATTR, mdt_tgt_getxattr),
4883 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_STATFS, mdt_statfs),
4884 TGT_MDT_HDL(0 | MUTABOR, MDS_REINT, mdt_reint),
4885 TGT_MDT_HDL(HABEO_CORPUS, MDS_CLOSE, mdt_close),
4886 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_READPAGE, mdt_readpage),
4887 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_SYNC, mdt_sync),
4888 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
4889 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_PROGRESS,
4891 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_REGISTER,
4892 mdt_hsm_ct_register),
4893 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_UNREGISTER,
4894 mdt_hsm_ct_unregister),
4895 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_STATE_GET,
4897 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_STATE_SET,
4899 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_ACTION, mdt_hsm_action),
4900 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_REQUEST,
4902 TGT_MDT_HDL(HABEO_CLAVIS | HABEO_CORPUS | HABEO_REFERO | MUTABOR,
4907 static struct tgt_handler mdt_io_ops[] = {
4908 TGT_OST_HDL_HP(HABEO_CORPUS | HABEO_REFERO, OST_BRW_READ, tgt_brw_read,
4910 TGT_OST_HDL_HP(HABEO_CORPUS | MUTABOR, OST_BRW_WRITE, tgt_brw_write,
4912 TGT_OST_HDL_HP(HABEO_CORPUS | HABEO_REFERO | MUTABOR,
4913 OST_PUNCH, mdt_punch_hdl,
4915 TGT_OST_HDL(HABEO_CORPUS | HABEO_REFERO, OST_SYNC, mdt_data_sync),
4918 static struct tgt_handler mdt_sec_ctx_ops[] = {
4919 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
4920 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
4921 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
4924 static struct tgt_handler mdt_quota_ops[] = {
4925 TGT_QUOTA_HDL(HABEO_REFERO, QUOTA_DQACQ, mdt_quota_dqacq),
4928 static struct tgt_opc_slice mdt_common_slice[] = {
4930 .tos_opc_start = MDS_FIRST_OPC,
4931 .tos_opc_end = MDS_LAST_OPC,
4932 .tos_hs = mdt_tgt_handlers
4935 .tos_opc_start = OBD_FIRST_OPC,
4936 .tos_opc_end = OBD_LAST_OPC,
4937 .tos_hs = tgt_obd_handlers
4940 .tos_opc_start = LDLM_FIRST_OPC,
4941 .tos_opc_end = LDLM_LAST_OPC,
4942 .tos_hs = tgt_dlm_handlers
4945 .tos_opc_start = SEC_FIRST_OPC,
4946 .tos_opc_end = SEC_LAST_OPC,
4947 .tos_hs = mdt_sec_ctx_ops
4950 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
4951 .tos_opc_end = OUT_UPDATE_LAST_OPC,
4952 .tos_hs = tgt_out_handlers
4955 .tos_opc_start = FLD_FIRST_OPC,
4956 .tos_opc_end = FLD_LAST_OPC,
4957 .tos_hs = fld_handlers
4960 .tos_opc_start = SEQ_FIRST_OPC,
4961 .tos_opc_end = SEQ_LAST_OPC,
4962 .tos_hs = seq_handlers
4965 .tos_opc_start = QUOTA_DQACQ,
4966 .tos_opc_end = QUOTA_LAST_OPC,
4967 .tos_hs = mdt_quota_ops
4970 .tos_opc_start = LLOG_FIRST_OPC,
4971 .tos_opc_end = LLOG_LAST_OPC,
4972 .tos_hs = tgt_llog_handlers
4975 .tos_opc_start = LFSCK_FIRST_OPC,
4976 .tos_opc_end = LFSCK_LAST_OPC,
4977 .tos_hs = tgt_lfsck_handlers
4980 .tos_opc_start = OST_FIRST_OPC,
4981 .tos_opc_end = OST_LAST_OPC,
4982 .tos_hs = mdt_io_ops
4989 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4991 struct md_device *next = m->mdt_child;
4992 struct lu_device *d = &m->mdt_lu_dev;
4993 struct obd_device *obd = mdt2obd_dev(m);
4994 struct lfsck_stop stop;
4997 stop.ls_status = LS_PAUSED;
4999 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
5001 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
5002 ping_evictor_stop();
5004 /* Remove the HSM /proc entry so the coordinator cannot be
5005 * restarted by a user while it's shutting down. */
5006 hsm_cdt_procfs_fini(m);
5007 mdt_hsm_cdt_stop(m);
5009 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
5010 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
5012 if (m->mdt_namespace != NULL)
5013 ldlm_namespace_free_prior(m->mdt_namespace, NULL,
5014 d->ld_obd->obd_force);
5016 obd_exports_barrier(obd);
5017 obd_zombie_barrier();
5019 mdt_quota_fini(env, m);
5021 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
5023 /* Calling the cleanup functions in the same order as in the mdt_init0
5028 target_recovery_fini(obd);
5029 upcall_cache_cleanup(m->mdt_identity_cache);
5030 m->mdt_identity_cache = NULL;
5032 mdt_fs_cleanup(env, m);
5034 tgt_fini(env, &m->mdt_lut);
5036 mdt_hsm_cdt_fini(m);
5038 if (m->mdt_namespace != NULL) {
5039 ldlm_namespace_free_post(m->mdt_namespace);
5040 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
5043 if (m->mdt_md_root != NULL) {
5044 mdt_object_put(env, m->mdt_md_root);
5045 m->mdt_md_root = NULL;
5048 mdt_seq_fini(env, m);
5050 mdt_fld_fini(env, m);
5055 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5057 LASSERT(atomic_read(&d->ld_ref) == 0);
5059 server_put_mount(mdt_obd_name(m), true);
5064 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
5066 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
5067 struct lu_device_type *ldt, struct lustre_cfg *cfg)
5069 const struct dt_device_param *dt_conf;
5070 struct mdt_thread_info *info;
5071 struct obd_device *obd;
5072 const char *dev = lustre_cfg_string(cfg, 0);
5073 const char *num = lustre_cfg_string(cfg, 2);
5074 struct tg_grants_data *tgd = &m->mdt_lut.lut_tgd;
5075 struct lustre_mount_info *lmi = NULL;
5076 struct lustre_sb_info *lsi;
5078 struct seq_server_site *ss_site;
5079 const char *identity_upcall = "NONE";
5080 struct md_device *next;
5086 lu_device_init(&m->mdt_lu_dev, ldt);
5088 * Environment (env) might be missing mdt_thread_key values at that
5089 * point, if device is allocated when mdt_thread_key is in QUIESCENT
5092 * Usually device allocation path doesn't use module key values, but
5093 * mdt has to do a lot of work here, so allocate key value.
5095 rc = lu_env_refill((struct lu_env *)env);
5099 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5100 LASSERT(info != NULL);
5102 obd = class_name2obd(dev);
5103 LASSERT(obd != NULL);
5105 m->mdt_max_mdsize = MAX_MD_SIZE; /* 4 stripes */
5106 m->mdt_opts.mo_evict_tgt_nids = 1;
5107 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
5109 lmi = server_get_mount(dev);
5111 CERROR("Cannot get mount info for %s!\n", dev);
5114 lsi = s2lsi(lmi->lmi_sb);
5115 /* CMD is supported only in IAM mode */
5117 node_id = simple_strtol(num, NULL, 10);
5118 obd->u.obt.obt_magic = OBT_MAGIC;
5119 if (lsi->lsi_lmd != NULL &&
5120 lsi->lsi_lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
5121 m->mdt_skip_lfsck = 1;
5124 /* DoM files get IO lock at open by default */
5125 m->mdt_opts.mo_dom_lock = 1;
5127 m->mdt_squash.rsi_uid = 0;
5128 m->mdt_squash.rsi_gid = 0;
5129 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
5130 init_rwsem(&m->mdt_squash.rsi_sem);
5131 spin_lock_init(&m->mdt_lock);
5132 m->mdt_enable_remote_dir = 0;
5133 m->mdt_enable_remote_dir_gid = 0;
5135 atomic_set(&m->mdt_mds_mds_conns, 0);
5136 atomic_set(&m->mdt_async_commit_count, 0);
5138 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
5139 m->mdt_lu_dev.ld_obd = obd;
5140 /* Set this lu_device to obd for error handling purposes. */
5141 obd->obd_lu_dev = &m->mdt_lu_dev;
5143 /* init the stack */
5144 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
5146 CERROR("%s: Can't init device stack, rc %d\n",
5147 mdt_obd_name(m), rc);
5152 ss_site = mdt_seq_site(m);
5153 s->ld_seq_site = ss_site;
5156 /* set server index */
5157 ss_site->ss_node_id = node_id;
5159 /* failover is the default
5160 * FIXME: we do not failout mds0/mgs, which may cause some problems.
5161 * assumed whose ss_node_id == 0 XXX
5163 obd->obd_replayable = 1;
5164 /* No connection accepted until configurations will finish */
5165 obd->obd_no_conn = 1;
5167 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
5168 char *str = lustre_cfg_string(cfg, 4);
5169 if (strchr(str, 'n')) {
5170 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
5171 obd->obd_replayable = 0;
5175 rc = mdt_fld_init(env, mdt_obd_name(m), m);
5177 GOTO(err_fini_stack, rc);
5179 rc = mdt_seq_init(env, m);
5181 GOTO(err_fini_fld, rc);
5183 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
5184 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
5185 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
5186 LDLM_NAMESPACE_SERVER,
5187 LDLM_NAMESPACE_GREEDY,
5189 if (m->mdt_namespace == NULL)
5190 GOTO(err_fini_seq, rc = -ENOMEM);
5192 m->mdt_namespace->ns_lvbp = m;
5193 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
5195 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
5196 /* set obd_namespace for compatibility with old code */
5197 obd->obd_namespace = m->mdt_namespace;
5199 rc = mdt_hsm_cdt_init(m);
5201 CERROR("%s: error initializing coordinator, rc %d\n",
5202 mdt_obd_name(m), rc);
5203 GOTO(err_free_ns, rc);
5206 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
5207 OBD_FAIL_MDS_ALL_REQUEST_NET,
5208 OBD_FAIL_MDS_ALL_REPLY_NET);
5210 GOTO(err_free_hsm, rc);
5212 /* Amount of available space excluded from granting and reserved
5213 * for metadata. It is in percentage and 50% is default value. */
5214 tgd->tgd_reserved_pcnt = 50;
5216 if (ONE_MB_BRW_SIZE < (1U << tgd->tgd_blockbits))
5217 m->mdt_brw_size = 1U << tgd->tgd_blockbits;
5219 m->mdt_brw_size = ONE_MB_BRW_SIZE;
5221 rc = mdt_fs_setup(env, m, obd, lsi);
5225 tgt_adapt_sptlrpc_conf(&m->mdt_lut);
5227 next = m->mdt_child;
5228 dt_conf = next->md_ops->mdo_dtconf_get(env, next);
5230 mntopts = dt_conf->ddp_mntopts;
5232 if (mntopts & MNTOPT_USERXATTR)
5233 m->mdt_opts.mo_user_xattr = 1;
5235 m->mdt_opts.mo_user_xattr = 0;
5237 m->mdt_max_ea_size = dt_conf->ddp_max_ea_size;
5239 if (mntopts & MNTOPT_ACL)
5240 m->mdt_opts.mo_acl = 1;
5242 m->mdt_opts.mo_acl = 0;
5244 /* XXX: to support suppgid for ACL, we enable identity_upcall
5245 * by default, otherwise, maybe got unexpected -EACCESS. */
5246 if (m->mdt_opts.mo_acl)
5247 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
5249 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
5251 &mdt_identity_upcall_cache_ops);
5252 if (IS_ERR(m->mdt_identity_cache)) {
5253 rc = PTR_ERR(m->mdt_identity_cache);
5254 m->mdt_identity_cache = NULL;
5255 GOTO(err_fs_cleanup, rc);
5258 rc = mdt_procfs_init(m, dev);
5260 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
5261 GOTO(err_recovery, rc);
5264 rc = mdt_quota_init(env, m, cfg);
5266 GOTO(err_procfs, rc);
5268 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
5269 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
5270 "mdt_ldlm_client", m->mdt_ldlm_client);
5272 ping_evictor_start();
5274 /* recovery will be started upon mdt_prepare()
5275 * when the whole stack is complete and ready
5276 * to serve the requests */
5278 /* Reduce the initial timeout on an MDS because it doesn't need such
5279 * a long timeout as an OST does. Adaptive timeouts will adjust this
5280 * value appropriately. */
5281 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
5282 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
5288 target_recovery_fini(obd);
5289 upcall_cache_cleanup(m->mdt_identity_cache);
5290 m->mdt_identity_cache = NULL;
5292 mdt_fs_cleanup(env, m);
5294 tgt_fini(env, &m->mdt_lut);
5296 mdt_hsm_cdt_fini(m);
5298 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
5299 obd->obd_namespace = m->mdt_namespace = NULL;
5301 mdt_seq_fini(env, m);
5303 mdt_fld_fini(env, m);
5305 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5308 server_put_mount(dev, true);
5312 /* For interoperability, the left element is old parameter, the right one
5313 * is the new version of the parameter, if some parameter is deprecated,
5314 * the new version should be set as NULL. */
5315 static struct cfg_interop_param mdt_interop_param[] = {
5316 { "mdt.group_upcall", NULL },
5317 { "mdt.quota_type", NULL },
5318 { "mdd.quota_type", NULL },
5319 { "mdt.som", NULL },
5320 { "mdt.rootsquash", "mdt.root_squash" },
5321 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
5325 /* used by MGS to process specific configurations */
5326 static int mdt_process_config(const struct lu_env *env,
5327 struct lu_device *d, struct lustre_cfg *cfg)
5329 struct mdt_device *m = mdt_dev(d);
5330 struct md_device *md_next = m->mdt_child;
5331 struct lu_device *next = md2lu_dev(md_next);
5335 switch (cfg->lcfg_command) {
5337 struct obd_device *obd = d->ld_obd;
5339 /* For interoperability */
5340 struct cfg_interop_param *ptr = NULL;
5341 struct lustre_cfg *old_cfg = NULL;
5344 param = lustre_cfg_string(cfg, 1);
5345 if (param == NULL) {
5346 CERROR("param is empty\n");
5351 ptr = class_find_old_param(param, mdt_interop_param);
5353 if (ptr->new_param == NULL) {
5355 CWARN("For interoperability, skip this %s."
5356 " It is obsolete.\n", ptr->old_param);
5360 CWARN("Found old param %s, changed it to %s.\n",
5361 ptr->old_param, ptr->new_param);
5364 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
5371 rc = class_process_proc_param(PARAM_MDT, obd->obd_vars,
5373 if (rc > 0 || rc == -ENOSYS) {
5374 /* is it an HSM var ? */
5375 rc = class_process_proc_param(PARAM_HSM,
5376 hsm_cdt_get_proc_vars(),
5378 if (rc > 0 || rc == -ENOSYS)
5379 /* we don't understand; pass it on */
5380 rc = next->ld_ops->ldo_process_config(env, next,
5385 OBD_FREE(cfg, lustre_cfg_len(cfg->lcfg_bufcount,
5386 cfg->lcfg_buflens));
5390 /* others are passed further */
5391 rc = next->ld_ops->ldo_process_config(env, next, cfg);
5397 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
5398 const struct lu_object_header *hdr,
5399 struct lu_device *d)
5401 struct mdt_object *mo;
5405 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
5407 struct lu_object *o;
5408 struct lu_object_header *h;
5411 h = &mo->mot_header;
5412 lu_object_header_init(h);
5413 lu_object_init(o, h, d);
5414 lu_object_add_top(h, o);
5415 o->lo_ops = &mdt_obj_ops;
5416 spin_lock_init(&mo->mot_write_lock);
5417 mutex_init(&mo->mot_lov_mutex);
5418 init_rwsem(&mo->mot_dom_sem);
5419 init_rwsem(&mo->mot_open_sem);
5420 atomic_set(&mo->mot_open_count, 0);
5426 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
5427 const struct lu_object_conf *unused)
5429 struct mdt_device *d = mdt_dev(o->lo_dev);
5430 struct lu_device *under;
5431 struct lu_object *below;
5435 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
5436 PFID(lu_object_fid(o)));
5438 under = &d->mdt_child->md_lu_dev;
5439 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
5440 if (below != NULL) {
5441 lu_object_add(o, below);
5448 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
5450 struct mdt_object *mo = mdt_obj(o);
5451 struct lu_object_header *h;
5455 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
5456 PFID(lu_object_fid(o)));
5458 LASSERT(atomic_read(&mo->mot_open_count) == 0);
5459 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
5462 lu_object_header_fini(h);
5463 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
5468 static int mdt_object_print(const struct lu_env *env, void *cookie,
5469 lu_printer_t p, const struct lu_object *o)
5471 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
5473 return (*p)(env, cookie,
5474 LUSTRE_MDT_NAME"-object@%p(%s %s, writecount=%d)",
5475 mdto, mdto->mot_lov_created ? "lov_created" : "",
5476 mdto->mot_cache_attr ? "cache_attr" : "",
5477 mdto->mot_write_count);
5480 static int mdt_prepare(const struct lu_env *env,
5481 struct lu_device *pdev,
5482 struct lu_device *cdev)
5484 struct mdt_device *mdt = mdt_dev(cdev);
5485 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
5486 struct obd_device *obd = cdev->ld_obd;
5493 rc = next->ld_ops->ldo_prepare(env, cdev, next);
5497 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
5501 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
5505 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
5506 /* The LFSCK instance is registered just now, so it must be there when
5507 * register the namespace to such instance. */
5508 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
5510 if (mdt->mdt_seq_site.ss_node_id == 0) {
5511 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
5512 &mdt->mdt_md_root_fid);
5517 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
5519 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
5520 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
5521 LASSERT(obd->obd_no_conn);
5522 spin_lock(&obd->obd_dev_lock);
5523 obd->obd_no_conn = 0;
5524 spin_unlock(&obd->obd_dev_lock);
5526 if (obd->obd_recovering == 0)
5527 mdt_postrecov(env, mdt);
5532 const struct lu_device_operations mdt_lu_ops = {
5533 .ldo_object_alloc = mdt_object_alloc,
5534 .ldo_process_config = mdt_process_config,
5535 .ldo_prepare = mdt_prepare,
5538 static const struct lu_object_operations mdt_obj_ops = {
5539 .loo_object_init = mdt_object_init,
5540 .loo_object_free = mdt_object_free,
5541 .loo_object_print = mdt_object_print
5544 static int mdt_obd_set_info_async(const struct lu_env *env,
5545 struct obd_export *exp,
5546 __u32 keylen, void *key,
5547 __u32 vallen, void *val,
5548 struct ptlrpc_request_set *set)
5554 if (KEY_IS(KEY_SPTLRPC_CONF)) {
5555 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp));
5563 * Match client and server connection feature flags.
5565 * Compute the compatibility flags for a connection request based on
5566 * features mutually supported by client and server.
5568 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
5569 * must not be updated here, otherwise a partially initialized value may
5570 * be exposed. After the connection request is successfully processed,
5571 * the top-level MDT connect request handler atomically updates the export
5572 * connect flags from the obd_connect_data::ocd_connect_flags field of the
5573 * reply. \see mdt_connect().
5575 * Before 2.7.50 clients will send a struct obd_connect_data_v1 rather than a
5576 * full struct obd_connect_data. So care must be taken when accessing fields
5577 * that are not present in struct obd_connect_data_v1. See LU-16.
5579 * \param exp the obd_export associated with this client/target pair
5580 * \param mdt the target device for the connection
5581 * \param data stores data for this connect request
5584 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
5585 * \retval -EBADE client and server feature requirements are incompatible
5587 static int mdt_connect_internal(const struct lu_env *env,
5588 struct obd_export *exp,
5589 struct mdt_device *mdt,
5590 struct obd_connect_data *data, bool reconnect)
5592 LASSERT(data != NULL);
5594 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
5596 if (mdt->mdt_bottom->dd_rdonly &&
5597 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
5598 !(data->ocd_connect_flags & OBD_CONNECT_RDONLY))
5601 if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
5602 data->ocd_connect_flags2 &= MDT_CONNECT_SUPPORTED2;
5604 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
5606 if (!mdt->mdt_opts.mo_acl)
5607 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
5609 if (!mdt->mdt_opts.mo_user_xattr)
5610 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
5612 if (OCD_HAS_FLAG(data, BRW_SIZE)) {
5613 data->ocd_brw_size = min(data->ocd_brw_size,
5615 if (data->ocd_brw_size == 0) {
5616 CERROR("%s: cli %s/%p ocd_connect_flags: %#llx "
5617 "ocd_version: %x ocd_grant: %d ocd_index: %u "
5618 "ocd_brw_size unexpectedly zero, network data "
5619 "corruption? Refusing to connect this client\n",
5621 exp->exp_client_uuid.uuid,
5622 exp, data->ocd_connect_flags, data->ocd_version,
5623 data->ocd_grant, data->ocd_index);
5628 if (OCD_HAS_FLAG(data, GRANT_PARAM)) {
5629 struct dt_device_param *ddp = &mdt->mdt_lut.lut_dt_conf;
5631 /* client is reporting its page size, for future use */
5632 exp->exp_target_data.ted_pagebits = data->ocd_grant_blkbits;
5633 data->ocd_grant_blkbits = mdt->mdt_lut.lut_tgd.tgd_blockbits;
5634 /* ddp_inodespace may not be power-of-two value, eg. for ldiskfs
5635 * it's LDISKFS_DIR_REC_LEN(20) = 28. */
5636 data->ocd_grant_inobits = fls(ddp->ddp_inodespace - 1);
5637 /* ocd_grant_tax_kb is in 1K byte blocks */
5638 data->ocd_grant_tax_kb = ddp->ddp_extent_tax >> 10;
5639 data->ocd_grant_max_blks = ddp->ddp_max_extent_blks;
5642 /* Save connect_data we have so far because tgt_grant_connect()
5643 * uses it to calculate grant, and we want to save the client
5644 * version before it is overwritten by LUSTRE_VERSION_CODE. */
5645 exp->exp_connect_data = *data;
5646 if (OCD_HAS_FLAG(data, GRANT))
5647 tgt_grant_connect(env, exp, data, !reconnect);
5649 if (OCD_HAS_FLAG(data, MAXBYTES))
5650 data->ocd_maxbytes = mdt->mdt_lut.lut_dt_conf.ddp_maxbytes;
5652 /* NB: Disregard the rule against updating
5653 * exp_connect_data.ocd_connect_flags in this case, since
5654 * tgt_client_new() needs to know if this is a lightweight
5655 * connection, and it is safe to expose this flag before
5656 * connection processing completes. */
5657 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
5658 spin_lock(&exp->exp_lock);
5659 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
5660 spin_unlock(&exp->exp_lock);
5663 data->ocd_version = LUSTRE_VERSION_CODE;
5665 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
5666 CWARN("%s: MDS requires FID support, but client not\n",
5671 if (OCD_HAS_FLAG(data, PINGLESS)) {
5672 if (ptlrpc_pinger_suppress_pings()) {
5673 spin_lock(&exp->exp_obd->obd_dev_lock);
5674 list_del_init(&exp->exp_obd_chain_timed);
5675 spin_unlock(&exp->exp_obd->obd_dev_lock);
5677 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
5681 data->ocd_max_easize = mdt->mdt_max_ea_size;
5683 /* NB: Disregard the rule against updating
5684 * exp_connect_data.ocd_connect_flags in this case, since
5685 * tgt_client_new() needs to know if this is client supports
5686 * multiple modify RPCs, and it is safe to expose this flag before
5687 * connection processing completes. */
5688 if (data->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS) {
5689 data->ocd_maxmodrpcs = max_mod_rpcs_per_client;
5690 spin_lock(&exp->exp_lock);
5691 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_MULTIMODRPCS;
5692 spin_unlock(&exp->exp_lock);
5695 if (OCD_HAS_FLAG(data, CKSUM)) {
5696 __u32 cksum_types = data->ocd_cksum_types;
5698 /* The client set in ocd_cksum_types the checksum types it
5699 * supports. We have to mask off the algorithms that we don't
5701 data->ocd_cksum_types &= cksum_types_supported_server();
5703 if (unlikely(data->ocd_cksum_types == 0)) {
5704 CERROR("%s: Connect with checksum support but no "
5705 "ocd_cksum_types is set\n",
5706 exp->exp_obd->obd_name);
5710 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
5711 "%x\n", exp->exp_obd->obd_name, obd_export_nid2str(exp),
5712 cksum_types, data->ocd_cksum_types);
5714 /* This client does not support OBD_CONNECT_CKSUM
5715 * fall back to CRC32 */
5716 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
5717 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
5718 exp->exp_obd->obd_name, obd_export_nid2str(exp));
5724 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
5725 struct mdt_thread_info *info,
5726 struct mdt_file_data *mfd)
5728 struct lu_context ses;
5732 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
5737 lu_context_enter(&ses);
5739 mdt_ucred(info)->uc_valid = UCRED_OLD;
5740 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
5742 lu_context_exit(&ses);
5743 lu_context_fini(&ses);
5749 static int mdt_export_cleanup(struct obd_export *exp)
5751 struct list_head closing_list;
5752 struct mdt_export_data *med = &exp->exp_mdt_data;
5753 struct obd_device *obd = exp->exp_obd;
5754 struct mdt_device *mdt;
5755 struct mdt_thread_info *info;
5757 struct mdt_file_data *mfd, *n;
5761 INIT_LIST_HEAD(&closing_list);
5762 spin_lock(&med->med_open_lock);
5763 while (!list_empty(&med->med_open_head)) {
5764 struct list_head *tmp = med->med_open_head.next;
5765 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
5767 /* Remove mfd handle so it can't be found again.
5768 * We are consuming the mfd_list reference here. */
5769 class_handle_unhash(&mfd->mfd_handle);
5770 list_move_tail(&mfd->mfd_list, &closing_list);
5772 spin_unlock(&med->med_open_lock);
5773 mdt = mdt_dev(obd->obd_lu_dev);
5774 LASSERT(mdt != NULL);
5776 rc = lu_env_init(&env, LCT_MD_THREAD);
5780 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5781 LASSERT(info != NULL);
5782 memset(info, 0, sizeof *info);
5783 info->mti_env = &env;
5784 info->mti_mdt = mdt;
5785 info->mti_exp = exp;
5787 if (!list_empty(&closing_list)) {
5788 struct md_attr *ma = &info->mti_attr;
5790 /* Close any open files (which may also cause orphan
5792 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
5793 list_del_init(&mfd->mfd_list);
5794 ma->ma_need = ma->ma_valid = 0;
5796 /* This file is being closed due to an eviction, it
5797 * could have been modified and now dirty regarding to
5798 * HSM archive, check this!
5799 * The logic here is to mark a file dirty if there's a
5800 * chance it was dirtied before the client was evicted,
5801 * so that we don't have to wait for a release attempt
5802 * before finding out the file was actually dirty and
5803 * fail the release. Aggressively marking it dirty here
5804 * will cause the policy engine to attempt to
5805 * re-archive it; when rearchiving, we can compare the
5806 * current version to the HSM data_version and make the
5807 * archive request into a noop if it's not actually
5810 if (mfd->mfd_mode & MDS_FMODE_WRITE)
5811 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
5813 /* Don't unlink orphan on failover umount, LU-184 */
5814 if (exp->exp_flags & OBD_OPT_FAILOVER) {
5815 ma->ma_valid = MA_FLAGS;
5816 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
5818 mdt_mfd_close(info, mfd);
5821 info->mti_mdt = NULL;
5822 /* cleanup client slot early */
5823 /* Do not erase record for recoverable client. */
5824 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
5825 tgt_client_del(&env, exp);
5831 static inline void mdt_enable_slc(struct mdt_device *mdt)
5833 if (mdt->mdt_lut.lut_sync_lock_cancel == NEVER_SYNC_ON_CANCEL)
5834 mdt->mdt_lut.lut_sync_lock_cancel = BLOCKING_SYNC_ON_CANCEL;
5837 static inline void mdt_disable_slc(struct mdt_device *mdt)
5839 if (mdt->mdt_lut.lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL)
5840 mdt->mdt_lut.lut_sync_lock_cancel = NEVER_SYNC_ON_CANCEL;
5843 static int mdt_obd_disconnect(struct obd_export *exp)
5850 class_export_get(exp);
5852 if (!(exp->exp_flags & OBD_OPT_FORCE))
5853 tgt_grant_sanity_check(exp->exp_obd, __func__);
5855 if ((exp_connect_flags(exp) & OBD_CONNECT_MDS_MDS) &&
5856 !(exp_connect_flags(exp) & OBD_CONNECT_LIGHTWEIGHT)) {
5857 struct mdt_device *mdt = mdt_dev(exp->exp_obd->obd_lu_dev);
5859 if (atomic_dec_and_test(&mdt->mdt_mds_mds_conns))
5860 mdt_disable_slc(mdt);
5863 rc = server_disconnect_export(exp);
5865 CDEBUG(D_IOCTL, "server disconnect error: rc = %d\n", rc);
5867 tgt_grant_discard(exp);
5869 rc = mdt_export_cleanup(exp);
5870 nodemap_del_member(exp);
5871 class_export_put(exp);
5875 /* mds_connect copy */
5876 static int mdt_obd_connect(const struct lu_env *env,
5877 struct obd_export **exp, struct obd_device *obd,
5878 struct obd_uuid *cluuid,
5879 struct obd_connect_data *data,
5882 struct obd_export *lexp;
5883 struct lustre_handle conn = { 0 };
5884 struct mdt_device *mdt;
5886 lnet_nid_t *client_nid = localdata;
5889 LASSERT(env != NULL);
5890 LASSERT(data != NULL);
5892 if (!exp || !obd || !cluuid)
5895 mdt = mdt_dev(obd->obd_lu_dev);
5897 if ((data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
5898 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
5899 atomic_inc(&mdt->mdt_mds_mds_conns);
5900 mdt_enable_slc(mdt);
5904 * first, check whether the stack is ready to handle requests
5905 * XXX: probably not very appropriate method is used now
5906 * at some point we should find a better one
5908 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) &&
5909 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) &&
5910 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
5911 rc = obd_get_info(env, mdt->mdt_child_exp,
5912 sizeof(KEY_OSP_CONNECTED),
5913 KEY_OSP_CONNECTED, NULL, NULL);
5916 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
5919 rc = class_connect(&conn, obd, cluuid);
5923 lexp = class_conn2export(&conn);
5924 LASSERT(lexp != NULL);
5926 rc = nodemap_add_member(*client_nid, lexp);
5927 if (rc != 0 && rc != -EEXIST)
5930 rc = mdt_connect_internal(env, lexp, mdt, data, false);
5932 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
5935 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5936 rc = tgt_client_new(env, lexp);
5938 mdt_export_stats_init(obd, lexp, localdata);
5942 class_disconnect(lexp);
5943 nodemap_del_member(lexp);
5947 /* Because we do not want this export to be evicted by pinger,
5948 * let's not add this export to the timed chain list. */
5949 if (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) {
5950 spin_lock(&lexp->exp_obd->obd_dev_lock);
5951 list_del_init(&lexp->exp_obd_chain_timed);
5952 spin_unlock(&lexp->exp_obd->obd_dev_lock);
5959 static int mdt_obd_reconnect(const struct lu_env *env,
5960 struct obd_export *exp, struct obd_device *obd,
5961 struct obd_uuid *cluuid,
5962 struct obd_connect_data *data,
5965 lnet_nid_t *client_nid = localdata;
5969 if (exp == NULL || obd == NULL || cluuid == NULL)
5972 rc = nodemap_add_member(*client_nid, exp);
5973 if (rc != 0 && rc != -EEXIST)
5976 rc = mdt_connect_internal(env, exp, mdt_dev(obd->obd_lu_dev), data,
5979 mdt_export_stats_init(obd, exp, localdata);
5981 nodemap_del_member(exp);
5986 /* FIXME: Can we avoid using these two interfaces? */
5987 static int mdt_init_export(struct obd_export *exp)
5989 struct mdt_export_data *med = &exp->exp_mdt_data;
5993 INIT_LIST_HEAD(&med->med_open_head);
5994 spin_lock_init(&med->med_open_lock);
5995 spin_lock(&exp->exp_lock);
5996 exp->exp_connecting = 1;
5997 spin_unlock(&exp->exp_lock);
5999 /* self-export doesn't need client data and ldlm initialization */
6000 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
6001 &exp->exp_client_uuid)))
6004 rc = tgt_client_alloc(exp);
6008 rc = ldlm_init_export(exp);
6015 tgt_client_free(exp);
6017 CERROR("%s: Failed to initialize export: rc = %d\n",
6018 exp->exp_obd->obd_name, rc);
6022 static int mdt_destroy_export(struct obd_export *exp)
6026 target_destroy_export(exp);
6027 /* destroy can be called from failed obd_setup, so
6028 * checking uuid is safer than obd_self_export */
6029 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
6030 &exp->exp_client_uuid)))
6033 ldlm_destroy_export(exp);
6034 tgt_client_free(exp);
6036 LASSERT(list_empty(&exp->exp_outstanding_replies));
6037 LASSERT(list_empty(&exp->exp_mdt_data.med_open_head));
6040 * discard grants once we're sure no more
6041 * interaction with the client is possible
6043 tgt_grant_discard(exp);
6044 if (exp_connect_flags(exp) & OBD_CONNECT_GRANT)
6045 exp->exp_obd->u.obt.obt_lut->lut_tgd.tgd_tot_granted_clients--;
6047 if (!(exp->exp_flags & OBD_OPT_FORCE))
6048 tgt_grant_sanity_check(exp->exp_obd, __func__);
6053 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
6054 struct linkea_data *ldata)
6058 LASSERT(ldata->ld_buf->lb_buf != NULL);
6060 if (!mdt_object_exists(mdt_obj))
6063 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6064 ldata->ld_buf, XATTR_NAME_LINK);
6065 if (rc == -ERANGE) {
6066 /* Buf was too small, figure out what we need. */
6067 lu_buf_free(ldata->ld_buf);
6068 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6069 ldata->ld_buf, XATTR_NAME_LINK);
6072 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
6073 if (ldata->ld_buf->lb_buf == NULL)
6075 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6076 ldata->ld_buf, XATTR_NAME_LINK);
6081 return linkea_init_with_rec(ldata);
6085 * Given an MDT object, try to look up the full path to the object.
6086 * Part of the MDT layer implementation of lfs fid2path.
6088 * \param[in] info Per-thread common data shared by MDT level handlers.
6089 * \param[in] obj Object to do path lookup of
6090 * \param[in,out] fp User-provided struct to store path information
6091 * \param[in] root_fid Root FID of current path should reach
6093 * \retval 0 Lookup successful, path information stored in fp
6094 * \retval -EAGAIN Lookup failed, usually because object is being moved
6095 * \retval negative errno if there was a problem
6097 static int mdt_path_current(struct mdt_thread_info *info,
6098 struct mdt_object *obj,
6099 struct getinfo_fid2path *fp,
6100 struct lu_fid *root_fid)
6102 struct mdt_device *mdt = info->mti_mdt;
6103 struct mdt_object *mdt_obj;
6104 struct link_ea_header *leh;
6105 struct link_ea_entry *lee;
6106 struct lu_name *tmpname = &info->mti_name;
6107 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
6108 struct lu_buf *buf = &info->mti_big_buf;
6111 struct linkea_data ldata = { NULL };
6116 /* temp buffer for path element, the buffer will be finally freed
6117 * in mdt_thread_info_fini */
6118 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
6119 if (buf->lb_buf == NULL)
6123 ptr = fp->gf_u.gf_path + fp->gf_pathlen - 1;
6126 *tmpfid = fp->gf_fid = *mdt_object_fid(obj);
6128 while (!lu_fid_eq(root_fid, &fp->gf_fid)) {
6129 struct lu_buf lmv_buf;
6131 if (!lu_fid_eq(root_fid, &mdt->mdt_md_root_fid) &&
6132 lu_fid_eq(&mdt->mdt_md_root_fid, &fp->gf_fid))
6133 GOTO(out, rc = -ENOENT);
6135 if (lu_fid_eq(mdt_object_fid(obj), tmpfid)) {
6137 mdt_object_get(info->mti_env, mdt_obj);
6139 mdt_obj = mdt_object_find(info->mti_env, mdt, tmpfid);
6140 if (IS_ERR(mdt_obj))
6141 GOTO(out, rc = PTR_ERR(mdt_obj));
6144 if (!mdt_object_exists(mdt_obj)) {
6145 mdt_object_put(info->mti_env, mdt_obj);
6146 GOTO(out, rc = -ENOENT);
6149 if (mdt_object_remote(mdt_obj)) {
6150 mdt_object_put(info->mti_env, mdt_obj);
6151 GOTO(remote_out, rc = -EREMOTE);
6154 rc = mdt_links_read(info, mdt_obj, &ldata);
6156 mdt_object_put(info->mti_env, mdt_obj);
6161 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
6162 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
6163 /* If set, use link #linkno for path lookup, otherwise use
6164 link #0. Only do this for the final path element. */
6165 if (first && fp->gf_linkno < leh->leh_reccount) {
6167 for (count = 0; count < fp->gf_linkno; count++) {
6168 lee = (struct link_ea_entry *)
6169 ((char *)lee + reclen);
6170 linkea_entry_unpack(lee, &reclen, tmpname,
6173 if (fp->gf_linkno < leh->leh_reccount - 1)
6174 /* indicate to user there are more links */
6178 lmv_buf.lb_buf = info->mti_xattr_buf;
6179 lmv_buf.lb_len = sizeof(info->mti_xattr_buf);
6180 /* Check if it is slave stripes */
6181 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6182 &lmv_buf, XATTR_NAME_LMV);
6183 mdt_object_put(info->mti_env, mdt_obj);
6185 union lmv_mds_md *lmm = lmv_buf.lb_buf;
6187 /* For slave stripes, get its master */
6188 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE) {
6189 fp->gf_fid = *tmpfid;
6192 } else if (rc < 0 && rc != -ENODATA) {
6198 /* Pack the name in the end of the buffer */
6199 ptr -= tmpname->ln_namelen;
6200 if (ptr - 1 <= fp->gf_u.gf_path)
6201 GOTO(out, rc = -EOVERFLOW);
6202 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
6205 /* keep the last resolved fid to the client, so the
6206 * client will build the left path on another MDT for
6208 fp->gf_fid = *tmpfid;
6214 ptr++; /* skip leading / */
6215 memmove(fp->gf_u.gf_path, ptr,
6216 fp->gf_u.gf_path + fp->gf_pathlen - ptr);
6223 * Given an MDT object, use mdt_path_current to get the path.
6224 * Essentially a wrapper to retry mdt_path_current a set number of times
6225 * if -EAGAIN is returned (usually because an object is being moved).
6227 * Part of the MDT layer implementation of lfs fid2path.
6229 * \param[in] info Per-thread common data shared by mdt level handlers.
6230 * \param[in] obj Object to do path lookup of
6231 * \param[in,out] fp User-provided struct for arguments and to store path
6234 * \retval 0 Lookup successful, path information stored in fp
6235 * \retval negative errno if there was a problem
6237 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
6238 struct getinfo_fid2path *fp, struct lu_fid *root_fid)
6240 struct mdt_device *mdt = info->mti_mdt;
6245 if (fp->gf_pathlen < 3)
6248 if (root_fid == NULL)
6249 root_fid = &mdt->mdt_md_root_fid;
6251 if (lu_fid_eq(root_fid, mdt_object_fid(obj))) {
6252 fp->gf_u.gf_path[0] = '\0';
6256 /* Retry multiple times in case file is being moved */
6257 while (tries-- && rc == -EAGAIN)
6258 rc = mdt_path_current(info, obj, fp, root_fid);
6264 * Get the full path of the provided FID, as of changelog record recno.
6266 * This checks sanity and looks up object for user provided FID
6267 * before calling the actual path lookup code.
6269 * Part of the MDT layer implementation of lfs fid2path.
6271 * \param[in] info Per-thread common data shared by mdt level handlers.
6272 * \param[in,out] fp User-provided struct for arguments and to store path
6275 * \retval 0 Lookup successful, path information and recno stored in fp
6276 * \retval -ENOENT, object does not exist
6277 * \retval negative errno if there was a problem
6279 static int mdt_fid2path(struct mdt_thread_info *info,
6280 struct lu_fid *root_fid,
6281 struct getinfo_fid2path *fp)
6283 struct mdt_device *mdt = info->mti_mdt;
6284 struct mdt_object *obj;
6288 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
6289 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
6291 if (!fid_is_sane(&fp->gf_fid))
6294 if (!fid_is_namespace_visible(&fp->gf_fid)) {
6295 CDEBUG(D_INFO, "%s: "DFID" is invalid, f_seq should be >= %#llx"
6296 ", or f_oid != 0, or f_ver == 0\n", mdt_obd_name(mdt),
6297 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
6301 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
6304 CDEBUG(D_IOCTL, "cannot find "DFID": rc = %d\n",
6305 PFID(&fp->gf_fid), rc);
6309 if (mdt_object_remote(obj))
6311 else if (!mdt_object_exists(obj))
6317 mdt_object_put(info->mti_env, obj);
6318 CDEBUG(D_IOCTL, "nonlocal object "DFID": rc = %d\n",
6319 PFID(&fp->gf_fid), rc);
6323 rc = mdt_path(info, obj, fp, root_fid);
6325 CDEBUG(D_INFO, "fid "DFID", path %s recno %#llx linkno %u\n",
6326 PFID(&fp->gf_fid), fp->gf_u.gf_path,
6327 fp->gf_recno, fp->gf_linkno);
6329 mdt_object_put(info->mti_env, obj);
6334 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key, int keylen,
6335 void *val, int vallen)
6337 struct getinfo_fid2path *fpout, *fpin;
6338 struct lu_fid *root_fid = NULL;
6341 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
6344 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
6345 lustre_swab_fid2path(fpin);
6347 memcpy(fpout, fpin, sizeof(*fpin));
6348 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
6351 if (keylen >= cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*fpin) +
6352 sizeof(struct lu_fid)) {
6353 /* client sent its root FID, which is normally fileset FID */
6354 root_fid = fpin->gf_u.gf_root_fid;
6355 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
6356 lustre_swab_lu_fid(root_fid);
6358 if (root_fid != NULL && !fid_is_sane(root_fid))
6362 rc = mdt_fid2path(info, root_fid, fpout);
6366 int mdt_get_info(struct tgt_session_info *tsi)
6376 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
6378 CDEBUG(D_IOCTL, "No GETINFO key\n");
6379 RETURN(err_serious(-EFAULT));
6381 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
6384 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
6385 if (vallen == NULL) {
6386 CDEBUG(D_IOCTL, "%s: cannot get RMF_GETINFO_VALLEN buffer\n",
6387 tgt_name(tsi->tsi_tgt));
6388 RETURN(err_serious(-EFAULT));
6391 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
6393 rc = req_capsule_server_pack(tsi->tsi_pill);
6395 RETURN(err_serious(rc));
6397 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
6398 if (valout == NULL) {
6399 CDEBUG(D_IOCTL, "%s: cannot get get-info RPC out buffer\n",
6400 tgt_name(tsi->tsi_tgt));
6401 RETURN(err_serious(-EFAULT));
6404 if (KEY_IS(KEY_FID2PATH)) {
6405 struct mdt_thread_info *info = tsi2mdt_info(tsi);
6407 rc = mdt_rpc_fid2path(info, key, keylen, valout, *vallen);
6408 mdt_thread_info_fini(info);
6415 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
6417 struct obd_ioctl_data *data = karg;
6420 struct mdt_object *obj;
6421 struct mdt_lock_handle *lh;
6425 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
6426 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
6429 fid = (struct lu_fid *)data->ioc_inlbuf1;
6431 if (!fid_is_sane(fid))
6434 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
6436 lh = &mti->mti_lh[MDT_LH_PARENT];
6437 mdt_lock_reg_init(lh, LCK_CR);
6439 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
6441 RETURN(PTR_ERR(obj));
6443 if (mdt_object_remote(obj)) {
6446 * before calling version get the correct MDS should be
6447 * fid, this is error to find remote object here
6449 CERROR("nonlocal object "DFID"\n", PFID(fid));
6450 } else if (!mdt_object_exists(obj)) {
6451 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
6454 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
6455 *(__u64 *)data->ioc_inlbuf2 = version;
6458 mdt_object_unlock_put(mti, obj, lh, 1);
6462 /* ioctls on obd dev */
6463 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
6464 void *karg, void __user *uarg)
6467 struct obd_device *obd = exp->exp_obd;
6468 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
6469 struct dt_device *dt = mdt->mdt_bottom;
6473 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
6474 rc = lu_env_init(&env, LCT_MD_THREAD);
6480 rc = mdt_device_sync(&env, mdt);
6482 case OBD_IOC_SET_READONLY:
6483 rc = dt_sync(&env, dt);
6485 rc = dt_ro(&env, dt);
6487 case OBD_IOC_ABORT_RECOVERY:
6488 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
6489 obd->obd_abort_recovery = 1;
6490 target_stop_recovery_thread(obd);
6493 case OBD_IOC_CHANGELOG_REG:
6494 case OBD_IOC_CHANGELOG_DEREG:
6495 case OBD_IOC_CHANGELOG_CLEAR:
6496 rc = mdt->mdt_child->md_ops->mdo_iocontrol(&env,
6500 case OBD_IOC_START_LFSCK: {
6501 struct md_device *next = mdt->mdt_child;
6502 struct obd_ioctl_data *data = karg;
6503 struct lfsck_start_param lsp;
6505 if (unlikely(data == NULL)) {
6510 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
6511 lsp.lsp_index_valid = 0;
6512 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
6515 case OBD_IOC_STOP_LFSCK: {
6516 struct md_device *next = mdt->mdt_child;
6517 struct obd_ioctl_data *data = karg;
6518 struct lfsck_stop stop;
6520 stop.ls_status = LS_STOPPED;
6521 /* Old lfsck utils may pass NULL @stop. */
6522 if (data->ioc_inlbuf1 == NULL)
6526 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
6528 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
6531 case OBD_IOC_QUERY_LFSCK: {
6532 struct md_device *next = mdt->mdt_child;
6533 struct obd_ioctl_data *data = karg;
6535 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0,
6539 case OBD_IOC_GET_OBJ_VERSION: {
6540 struct mdt_thread_info *mti;
6541 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6542 memset(mti, 0, sizeof *mti);
6543 mti->mti_env = &env;
6547 rc = mdt_ioc_version_get(mti, karg);
6550 case OBD_IOC_CATLOGLIST: {
6551 struct mdt_thread_info *mti;
6553 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6554 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
6555 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
6556 &mti->mti_tmp_fid1);
6561 CERROR("%s: Not supported cmd = %d, rc = %d\n",
6562 mdt_obd_name(mdt), cmd, rc);
6569 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
6571 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
6575 if (!mdt->mdt_skip_lfsck && !mdt->mdt_bottom->dd_rdonly) {
6576 struct lfsck_start_param lsp;
6578 lsp.lsp_start = NULL;
6579 lsp.lsp_index_valid = 0;
6580 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
6581 OBD_IOC_START_LFSCK,
6583 if (rc != 0 && rc != -EALREADY)
6584 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
6585 mdt_obd_name(mdt), rc);
6588 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
6592 static int mdt_obd_postrecov(struct obd_device *obd)
6597 rc = lu_env_init(&env, LCT_MD_THREAD);
6600 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
6605 static struct obd_ops mdt_obd_device_ops = {
6606 .o_owner = THIS_MODULE,
6607 .o_set_info_async = mdt_obd_set_info_async,
6608 .o_connect = mdt_obd_connect,
6609 .o_reconnect = mdt_obd_reconnect,
6610 .o_disconnect = mdt_obd_disconnect,
6611 .o_init_export = mdt_init_export,
6612 .o_destroy_export = mdt_destroy_export,
6613 .o_iocontrol = mdt_iocontrol,
6614 .o_postrecov = mdt_obd_postrecov,
6615 /* Data-on-MDT IO methods */
6616 .o_preprw = mdt_obd_preprw,
6617 .o_commitrw = mdt_obd_commitrw,
6620 static struct lu_device* mdt_device_fini(const struct lu_env *env,
6621 struct lu_device *d)
6623 struct mdt_device *m = mdt_dev(d);
6630 static struct lu_device *mdt_device_free(const struct lu_env *env,
6631 struct lu_device *d)
6633 struct mdt_device *m = mdt_dev(d);
6636 lu_device_fini(&m->mdt_lu_dev);
6642 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
6643 struct lu_device_type *t,
6644 struct lustre_cfg *cfg)
6646 struct lu_device *l;
6647 struct mdt_device *m;
6654 rc = mdt_init0(env, m, t, cfg);
6656 mdt_device_free(env, l);
6661 l = ERR_PTR(-ENOMEM);
6665 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
6666 LU_KEY_INIT(mdt, struct mdt_thread_info);
6668 static void mdt_key_fini(const struct lu_context *ctx,
6669 struct lu_context_key *key, void* data)
6671 struct mdt_thread_info *info = data;
6673 if (info->mti_big_lmm) {
6674 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
6675 info->mti_big_lmm = NULL;
6676 info->mti_big_lmmsize = 0;
6679 if (info->mti_big_acl) {
6680 OBD_FREE_LARGE(info->mti_big_acl, info->mti_big_aclsize);
6681 info->mti_big_acl = NULL;
6682 info->mti_big_aclsize = 0;
6688 /* context key: mdt_thread_key */
6689 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
6691 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
6693 return lu_ucred(info->mti_env);
6696 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
6698 return lu_ucred_check(info->mti_env);
6702 * Enable/disable COS (Commit On Sharing).
6704 * Set/Clear the COS flag in mdt options.
6706 * \param mdt mdt device
6707 * \param val 0 disables COS, other values enable COS
6709 void mdt_enable_cos(struct mdt_device *mdt, bool val)
6714 mdt->mdt_opts.mo_cos = val;
6715 rc = lu_env_init(&env, LCT_LOCAL);
6716 if (unlikely(rc != 0)) {
6717 CWARN("%s: lu_env initialization failed, cannot "
6718 "sync: rc = %d\n", mdt_obd_name(mdt), rc);
6721 mdt_device_sync(&env, mdt);
6726 * Check COS (Commit On Sharing) status.
6728 * Return COS flag status.
6730 * \param mdt mdt device
6732 int mdt_cos_is_enabled(struct mdt_device *mdt)
6734 return mdt->mdt_opts.mo_cos != 0;
6737 static struct lu_device_type_operations mdt_device_type_ops = {
6738 .ldto_device_alloc = mdt_device_alloc,
6739 .ldto_device_free = mdt_device_free,
6740 .ldto_device_fini = mdt_device_fini
6743 static struct lu_device_type mdt_device_type = {
6744 .ldt_tags = LU_DEVICE_MD,
6745 .ldt_name = LUSTRE_MDT_NAME,
6746 .ldt_ops = &mdt_device_type_ops,
6747 .ldt_ctx_tags = LCT_MD_THREAD
6750 static int __init mdt_init(void)
6754 CLASSERT(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") ==
6755 FID_NOBRACE_LEN + 1);
6756 CLASSERT(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") ==
6758 rc = lu_kmem_init(mdt_caches);
6762 rc = mds_mod_init();
6766 rc = class_register_type(&mdt_obd_device_ops, NULL, true, NULL,
6767 LUSTRE_MDT_NAME, &mdt_device_type);
6772 lu_kmem_fini(mdt_caches);
6779 static void __exit mdt_exit(void)
6781 class_unregister_type(LUSTRE_MDT_NAME);
6783 lu_kmem_fini(mdt_caches);
6786 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
6787 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
6788 MODULE_VERSION(LUSTRE_VERSION_STRING);
6789 MODULE_LICENSE("GPL");
6791 module_init(mdt_init);
6792 module_exit(mdt_exit);