4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2010, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/mdt/mdt_handler.c
34 * Lustre Metadata Target (mdt) request handler
36 * Author: Peter Braam <braam@clusterfs.com>
37 * Author: Andreas Dilger <adilger@clusterfs.com>
38 * Author: Phil Schwan <phil@clusterfs.com>
39 * Author: Mike Shaver <shaver@clusterfs.com>
40 * Author: Nikita Danilov <nikita@clusterfs.com>
41 * Author: Huang Hua <huanghua@clusterfs.com>
42 * Author: Yury Umanets <umka@clusterfs.com>
45 #define DEBUG_SUBSYSTEM S_MDS
47 #include <linux/module.h>
48 #include <linux/pagemap.h>
50 #include <dt_object.h>
51 #include <lustre_acl.h>
52 #include <lustre_export.h>
53 #include <uapi/linux/lustre/lustre_ioctl.h>
54 #include <lustre_lfsck.h>
55 #include <lustre_log.h>
56 #include <lustre_nodemap.h>
57 #include <lustre_mds.h>
58 #include <uapi/linux/lustre/lustre_param.h>
59 #include <lustre_quota.h>
60 #include <lustre_swab.h>
62 #include <obd_support.h>
63 #include <lustre_barrier.h>
64 #include <obd_cksum.h>
65 #include <llog_swab.h>
67 #include "mdt_internal.h"
69 static unsigned int max_mod_rpcs_per_client = 8;
70 module_param(max_mod_rpcs_per_client, uint, 0644);
71 MODULE_PARM_DESC(max_mod_rpcs_per_client, "maximum number of modify RPCs in flight allowed per client");
73 mdl_mode_t mdt_mdl_lock_modes[] = {
74 [LCK_MINMODE] = MDL_MINMODE,
81 [LCK_GROUP] = MDL_GROUP
84 enum ldlm_mode mdt_dlm_lock_modes[] = {
85 [MDL_MINMODE] = LCK_MINMODE,
92 [MDL_GROUP] = LCK_GROUP
95 static struct mdt_device *mdt_dev(struct lu_device *d);
97 static const struct lu_object_operations mdt_obj_ops;
99 /* Slab for MDT object allocation */
100 static struct kmem_cache *mdt_object_kmem;
102 /* For HSM restore handles */
103 struct kmem_cache *mdt_hsm_cdt_kmem;
105 /* For HSM request handles */
106 struct kmem_cache *mdt_hsm_car_kmem;
108 static struct lu_kmem_descr mdt_caches[] = {
110 .ckd_cache = &mdt_object_kmem,
111 .ckd_name = "mdt_obj",
112 .ckd_size = sizeof(struct mdt_object)
115 .ckd_cache = &mdt_hsm_cdt_kmem,
116 .ckd_name = "mdt_cdt_restore_handle",
117 .ckd_size = sizeof(struct cdt_restore_handle)
120 .ckd_cache = &mdt_hsm_car_kmem,
121 .ckd_name = "mdt_cdt_agent_req",
122 .ckd_size = sizeof(struct cdt_agent_req)
129 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag)
133 return rep->lock_policy_res1 & op_flag;
136 void mdt_clear_disposition(struct mdt_thread_info *info,
137 struct ldlm_reply *rep, __u64 op_flag)
140 info->mti_opdata &= ~op_flag;
141 tgt_opdata_clear(info->mti_env, op_flag);
144 rep->lock_policy_res1 &= ~op_flag;
147 void mdt_set_disposition(struct mdt_thread_info *info,
148 struct ldlm_reply *rep, __u64 op_flag)
151 info->mti_opdata |= op_flag;
152 tgt_opdata_set(info->mti_env, op_flag);
155 rep->lock_policy_res1 |= op_flag;
158 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm)
160 lh->mlh_pdo_hash = 0;
161 lh->mlh_reg_mode = lm;
162 lh->mlh_rreg_mode = lm;
163 lh->mlh_type = MDT_REG_LOCK;
166 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
167 const struct lu_name *lname)
169 lh->mlh_reg_mode = lock_mode;
170 lh->mlh_pdo_mode = LCK_MINMODE;
171 lh->mlh_rreg_mode = lock_mode;
172 lh->mlh_type = MDT_PDO_LOCK;
174 if (lu_name_is_valid(lname)) {
175 lh->mlh_pdo_hash = ll_full_name_hash(NULL, lname->ln_name,
177 /* XXX Workaround for LU-2856
179 * Zero is a valid return value of full_name_hash, but
180 * several users of mlh_pdo_hash assume a non-zero
181 * hash value. We therefore map zero onto an
182 * arbitrary, but consistent value (1) to avoid
183 * problems further down the road. */
184 if (unlikely(lh->mlh_pdo_hash == 0))
185 lh->mlh_pdo_hash = 1;
187 lh->mlh_pdo_hash = 0;
191 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
192 struct mdt_lock_handle *lh)
198 * Any dir access needs couple of locks:
200 * 1) on part of dir we gonna take lookup/modify;
202 * 2) on whole dir to protect it from concurrent splitting and/or to
203 * flush client's cache for readdir().
205 * so, for a given mode and object this routine decides what lock mode
206 * to use for lock #2:
208 * 1) if caller's gonna lookup in dir then we need to protect dir from
209 * being splitted only - LCK_CR
211 * 2) if caller's gonna modify dir then we need to protect dir from
212 * being splitted and to flush cache - LCK_CW
214 * 3) if caller's gonna modify dir and that dir seems ready for
215 * splitting then we need to protect it from any type of access
216 * (lookup/modify/split) - LCK_EX --bzzz
219 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
220 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
223 * Ask underlaying level its opinion about preferable PDO lock mode
224 * having access type passed as regular lock mode:
226 * - MDL_MINMODE means that lower layer does not want to specify lock
229 * - MDL_NL means that no PDO lock should be taken. This is used in some
230 * cases. Say, for non-splittable directories no need to use PDO locks
233 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
234 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
236 if (mode != MDL_MINMODE) {
237 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
240 * Lower layer does not want to specify locking mode. We do it
241 * our selves. No special protection is needed, just flush
242 * client's cache on modification and allow concurrent
245 switch (lh->mlh_reg_mode) {
247 lh->mlh_pdo_mode = LCK_EX;
250 lh->mlh_pdo_mode = LCK_CR;
253 lh->mlh_pdo_mode = LCK_CW;
256 CERROR("Not expected lock type (0x%x)\n",
257 (int)lh->mlh_reg_mode);
262 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
266 static int mdt_lookup_fileset(struct mdt_thread_info *info, const char *fileset,
269 struct mdt_device *mdt = info->mti_mdt;
270 struct lu_name *lname = &info->mti_name;
271 char *filename = info->mti_filename;
272 struct mdt_object *parent;
276 LASSERT(!info->mti_cross_ref);
279 * We may want to allow this to mount a completely separate
280 * fileset from the MDT in the future, but keeping it to
281 * ROOT/ only for now avoid potential security issues.
283 *fid = mdt->mdt_md_root_fid;
285 while (rc == 0 && fileset != NULL && *fileset != '\0') {
286 const char *s1 = fileset;
292 while (*s2 != '/' && *s2 != '\0')
300 lname->ln_namelen = s2 - s1;
301 if (lname->ln_namelen > NAME_MAX) {
306 /* reject .. as a path component */
307 if (lname->ln_namelen == 2 &&
308 strncmp(s1, "..", 2) == 0) {
313 strncpy(filename, s1, lname->ln_namelen);
314 filename[lname->ln_namelen] = '\0';
315 lname->ln_name = filename;
317 parent = mdt_object_find(info->mti_env, mdt, fid);
318 if (IS_ERR(parent)) {
319 rc = PTR_ERR(parent);
322 /* Only got the fid of this obj by name */
324 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
325 fid, &info->mti_spec);
326 mdt_object_put(info->mti_env, parent);
329 parent = mdt_object_find(info->mti_env, mdt, fid);
331 rc = PTR_ERR(parent);
333 mode = lu_object_attr(&parent->mot_obj);
334 mdt_object_put(info->mti_env, parent);
343 static int mdt_get_root(struct tgt_session_info *tsi)
345 struct mdt_thread_info *info = tsi2mdt_info(tsi);
346 struct mdt_device *mdt = info->mti_mdt;
347 struct mdt_body *repbody;
348 char *fileset = NULL, *buffer = NULL;
350 struct obd_export *exp = info->mti_exp;
351 char *nodemap_fileset;
355 rc = mdt_check_ucred(info);
357 GOTO(out, rc = err_serious(rc));
359 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GET_ROOT_PACK))
360 GOTO(out, rc = err_serious(-ENOMEM));
362 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
363 if (req_capsule_get_size(info->mti_pill, &RMF_NAME, RCL_CLIENT) > 0) {
364 fileset = req_capsule_client_get(info->mti_pill, &RMF_NAME);
366 GOTO(out, rc = err_serious(-EFAULT));
369 nodemap_fileset = nodemap_get_fileset(exp->exp_target_data.ted_nodemap);
370 if (nodemap_fileset && nodemap_fileset[0]) {
371 CDEBUG(D_INFO, "nodemap fileset is %s\n", nodemap_fileset);
373 /* consider fileset from client as a sub-fileset
374 * of the nodemap one */
375 OBD_ALLOC(buffer, PATH_MAX + 1);
377 GOTO(out, rc = err_serious(-ENOMEM));
378 if (snprintf(buffer, PATH_MAX + 1, "%s/%s",
379 nodemap_fileset, fileset) >= PATH_MAX + 1)
380 GOTO(out, rc = err_serious(-EINVAL));
383 /* enforce fileset as specified in the nodemap */
384 fileset = nodemap_fileset;
389 CDEBUG(D_INFO, "Getting fileset %s\n", fileset);
390 rc = mdt_lookup_fileset(info, fileset, &repbody->mbo_fid1);
392 GOTO(out, rc = err_serious(rc));
394 repbody->mbo_fid1 = mdt->mdt_md_root_fid;
396 repbody->mbo_valid |= OBD_MD_FLID;
400 mdt_thread_info_fini(info);
402 OBD_FREE(buffer, PATH_MAX+1);
406 static int mdt_statfs(struct tgt_session_info *tsi)
408 struct ptlrpc_request *req = tgt_ses_req(tsi);
409 struct mdt_thread_info *info = tsi2mdt_info(tsi);
410 struct mdt_device *mdt = info->mti_mdt;
411 struct tg_grants_data *tgd = &mdt->mdt_lut.lut_tgd;
412 struct md_device *next = mdt->mdt_child;
413 struct ptlrpc_service_part *svcpt;
414 struct obd_statfs *osfs;
415 struct mdt_body *reqbody = NULL;
416 struct mdt_statfs_cache *msf;
421 svcpt = req->rq_rqbd->rqbd_svcpt;
423 /* This will trigger a watchdog timeout */
424 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
425 (MDT_SERVICE_WATCHDOG_FACTOR *
426 at_get(&svcpt->scp_at_estimate)) + 1);
428 rc = mdt_check_ucred(info);
430 GOTO(out, rc = err_serious(rc));
432 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
433 GOTO(out, rc = err_serious(-ENOMEM));
435 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
437 GOTO(out, rc = -EPROTO);
439 if (mdt_is_sum_statfs_client(req->rq_export) &&
440 lustre_packed_msg_size(req->rq_reqmsg) ==
441 req_capsule_fmt_size(req->rq_reqmsg->lm_magic,
442 &RQF_MDS_STATFS_NEW, RCL_CLIENT)) {
443 req_capsule_extend(info->mti_pill, &RQF_MDS_STATFS_NEW);
444 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
447 if (reqbody && reqbody->mbo_valid & OBD_MD_FLAGSTATFS)
448 msf = &mdt->mdt_sum_osfs;
450 msf = &mdt->mdt_osfs;
452 if (msf->msf_age + OBD_STATFS_CACHE_SECONDS <= ktime_get_seconds()) {
453 /** statfs data is too old, get up-to-date one */
454 if (reqbody && reqbody->mbo_valid & OBD_MD_FLAGSTATFS)
455 rc = next->md_ops->mdo_statfs(info->mti_env,
458 rc = dt_statfs(info->mti_env, mdt->mdt_bottom,
462 spin_lock(&mdt->mdt_lock);
463 msf->msf_osfs = *osfs;
464 msf->msf_age = ktime_get_seconds();
465 spin_unlock(&mdt->mdt_lock);
467 /** use cached statfs data */
468 spin_lock(&mdt->mdt_lock);
469 *osfs = msf->msf_osfs;
470 spin_unlock(&mdt->mdt_lock);
473 /* at least try to account for cached pages. its still racy and
474 * might be under-reporting if clients haven't announced their
475 * caches with brw recently */
476 CDEBUG(D_SUPER | D_CACHE, "blocks cached %llu granted %llu"
477 " pending %llu free %llu avail %llu\n",
478 tgd->tgd_tot_dirty, tgd->tgd_tot_granted,
479 tgd->tgd_tot_pending,
480 osfs->os_bfree << tgd->tgd_blockbits,
481 osfs->os_bavail << tgd->tgd_blockbits);
483 osfs->os_bavail -= min_t(u64, osfs->os_bavail,
484 ((tgd->tgd_tot_dirty + tgd->tgd_tot_pending +
485 osfs->os_bsize - 1) >> tgd->tgd_blockbits));
487 tgt_grant_sanity_check(mdt->mdt_lu_dev.ld_obd, __func__);
488 CDEBUG(D_CACHE, "%llu blocks: %llu free, %llu avail; "
489 "%llu objects: %llu free; state %x\n",
490 osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
491 osfs->os_files, osfs->os_ffree, osfs->os_state);
493 if (!exp_grant_param_supp(tsi->tsi_exp) &&
494 tgd->tgd_blockbits > COMPAT_BSIZE_SHIFT) {
495 /* clients which don't support OBD_CONNECT_GRANT_PARAM
496 * should not see a block size > page size, otherwise
497 * cl_lost_grant goes mad. Therefore, we emulate a 4KB (=2^12)
498 * block size which is the biggest block size known to work
499 * with all client's page size. */
500 osfs->os_blocks <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
501 osfs->os_bfree <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
502 osfs->os_bavail <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
503 osfs->os_bsize = 1 << COMPAT_BSIZE_SHIFT;
506 mdt_counter_incr(req, LPROC_MDT_STATFS);
508 mdt_thread_info_fini(info);
513 * Pack size attributes into the reply.
515 int mdt_pack_size2body(struct mdt_thread_info *info,
516 const struct lu_fid *fid, struct lustre_handle *lh)
519 struct md_attr *ma = &info->mti_attr;
521 bool dom_lock = false;
525 LASSERT(ma->ma_attr.la_valid & LA_MODE);
527 if (!S_ISREG(ma->ma_attr.la_mode) ||
528 !(ma->ma_valid & MA_LOV && ma->ma_lmm != NULL))
531 dom_stripe = mdt_lmm_dom_entry(ma->ma_lmm);
532 /* no DoM stripe, no size in reply */
533 if (dom_stripe == LMM_NO_DOM)
536 if (lustre_handle_is_used(lh)) {
537 struct ldlm_lock *lock;
539 lock = ldlm_handle2lock(lh);
541 dom_lock = ldlm_has_dom(lock);
546 /* no DoM lock, no size in reply */
550 /* Either DoM lock exists or LMM has only DoM stripe then
551 * return size on body. */
552 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
554 mdt_dom_object_size(info->mti_env, info->mti_mdt, fid, b, dom_lock);
558 #ifdef CONFIG_FS_POSIX_ACL
560 * Pack ACL data into the reply. UIDs/GIDs are mapped and filtered by nodemap.
562 * \param info thread info object
563 * \param repbody reply to pack ACLs into
564 * \param o mdt object of file to examine
565 * \param nodemap nodemap of client to reply to
567 * \retval -errno error getting or parsing ACL from disk
569 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
570 struct mdt_object *o, struct lu_nodemap *nodemap)
572 const struct lu_env *env = info->mti_env;
573 struct md_object *next = mdt_object_child(o);
574 struct lu_buf *buf = &info->mti_buf;
575 struct mdt_device *mdt = info->mti_mdt;
576 struct req_capsule *pill = info->mti_pill;
581 buf->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
582 buf->lb_len = req_capsule_get_size(pill, &RMF_ACL, RCL_SERVER);
583 if (buf->lb_len == 0)
587 rc = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_ACCESS);
589 if (rc == -ENODATA) {
590 repbody->mbo_aclsize = 0;
591 repbody->mbo_valid |= OBD_MD_FLACL;
593 } else if (rc == -EOPNOTSUPP) {
597 exp_connect_large_acl(info->mti_exp) &&
598 buf->lb_buf != info->mti_big_acl) {
599 if (info->mti_big_acl == NULL) {
600 info->mti_big_aclsize =
601 MIN(mdt->mdt_max_ea_size,
603 OBD_ALLOC_LARGE(info->mti_big_acl,
604 info->mti_big_aclsize);
605 if (info->mti_big_acl == NULL) {
606 info->mti_big_aclsize = 0;
607 CERROR("%s: unable to grow "
610 PFID(mdt_object_fid(o)));
615 CDEBUG(D_INODE, "%s: grow the "DFID
616 " ACL buffer to size %d\n",
618 PFID(mdt_object_fid(o)),
619 info->mti_big_aclsize);
621 buf->lb_buf = info->mti_big_acl;
622 buf->lb_len = info->mti_big_aclsize;
627 CERROR("%s: unable to read "DFID" ACL: rc = %d\n",
628 mdt_obd_name(mdt), PFID(mdt_object_fid(o)), rc);
637 acl_buflen = req_capsule_get_size(pill, &RMF_ACL, RCL_SERVER);
638 if (acl_buflen >= rc)
641 /* If LOV/LMA EA is small, we can reuse part of their buffer */
642 client = ptlrpc_req_get_repsize(pill->rc_req);
643 server = lustre_packed_msg_size(pill->rc_req->rq_repmsg);
644 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER)) {
645 lmm_buflen = req_capsule_get_size(pill, &RMF_MDT_MD,
647 lmmsize = repbody->mbo_eadatasize;
650 if (client < server - acl_buflen - lmm_buflen + rc + lmmsize) {
651 CDEBUG(D_INODE, "%s: client prepared buffer size %d "
652 "is not big enough with the ACL size %d (%d)\n",
653 mdt_obd_name(mdt), client, rc,
654 server - acl_buflen - lmm_buflen + rc + lmmsize);
655 repbody->mbo_aclsize = 0;
656 repbody->mbo_valid &= ~OBD_MD_FLACL;
661 if (buf->lb_buf == info->mti_big_acl)
662 info->mti_big_acl_used = 1;
664 rc = nodemap_map_acl(nodemap, buf->lb_buf,
665 rc, NODEMAP_FS_TO_CLIENT);
666 /* if all ACLs mapped out, rc is still >= 0 */
668 CERROR("%s: nodemap_map_acl unable to parse "DFID
669 " ACL: rc = %d\n", mdt_obd_name(mdt),
670 PFID(mdt_object_fid(o)), rc);
671 repbody->mbo_aclsize = 0;
672 repbody->mbo_valid &= ~OBD_MD_FLACL;
674 repbody->mbo_aclsize = rc;
675 repbody->mbo_valid |= OBD_MD_FLACL;
684 /* XXX Look into layout in MDT layer. */
685 static inline bool mdt_hsm_is_released(struct lov_mds_md *lmm)
687 struct lov_comp_md_v1 *comp_v1;
688 struct lov_mds_md *v1;
691 if (lmm->lmm_magic == LOV_MAGIC_COMP_V1) {
692 comp_v1 = (struct lov_comp_md_v1 *)lmm;
694 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
695 v1 = (struct lov_mds_md *)((char *)comp_v1 +
696 comp_v1->lcm_entries[i].lcme_offset);
697 /* We don't support partial release for now */
698 if (!(v1->lmm_pattern & LOV_PATTERN_F_RELEASED))
703 return (lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) ?
708 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
709 const struct lu_attr *attr, const struct lu_fid *fid)
711 struct md_attr *ma = &info->mti_attr;
712 struct obd_export *exp = info->mti_exp;
713 struct lu_nodemap *nodemap = NULL;
715 LASSERT(ma->ma_valid & MA_INODE);
717 if (attr->la_valid & LA_ATIME) {
718 b->mbo_atime = attr->la_atime;
719 b->mbo_valid |= OBD_MD_FLATIME;
721 if (attr->la_valid & LA_MTIME) {
722 b->mbo_mtime = attr->la_mtime;
723 b->mbo_valid |= OBD_MD_FLMTIME;
725 if (attr->la_valid & LA_CTIME) {
726 b->mbo_ctime = attr->la_ctime;
727 b->mbo_valid |= OBD_MD_FLCTIME;
729 if (attr->la_valid & LA_FLAGS) {
730 b->mbo_flags = attr->la_flags;
731 b->mbo_valid |= OBD_MD_FLFLAGS;
733 if (attr->la_valid & LA_NLINK) {
734 b->mbo_nlink = attr->la_nlink;
735 b->mbo_valid |= OBD_MD_FLNLINK;
737 if (attr->la_valid & (LA_UID|LA_GID)) {
738 nodemap = nodemap_get_from_exp(exp);
742 if (attr->la_valid & LA_UID) {
743 b->mbo_uid = nodemap_map_id(nodemap, NODEMAP_UID,
744 NODEMAP_FS_TO_CLIENT,
746 b->mbo_valid |= OBD_MD_FLUID;
748 if (attr->la_valid & LA_GID) {
749 b->mbo_gid = nodemap_map_id(nodemap, NODEMAP_GID,
750 NODEMAP_FS_TO_CLIENT,
752 b->mbo_valid |= OBD_MD_FLGID;
755 if (attr->la_valid & LA_PROJID) {
756 /* TODO, nodemap for project id */
757 b->mbo_projid = attr->la_projid;
758 b->mbo_valid |= OBD_MD_FLPROJID;
761 b->mbo_mode = attr->la_mode;
762 if (attr->la_valid & LA_MODE)
763 b->mbo_valid |= OBD_MD_FLMODE;
764 if (attr->la_valid & LA_TYPE)
765 b->mbo_valid |= OBD_MD_FLTYPE;
769 b->mbo_valid |= OBD_MD_FLID;
770 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, valid=%#llx\n",
771 PFID(fid), b->mbo_nlink, b->mbo_mode, b->mbo_valid);
774 if (!(attr->la_valid & LA_TYPE))
777 b->mbo_rdev = attr->la_rdev;
778 b->mbo_size = attr->la_size;
779 b->mbo_blocks = attr->la_blocks;
781 if (!S_ISREG(attr->la_mode)) {
782 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
783 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
784 /* means no objects are allocated on osts. */
785 LASSERT(!(ma->ma_valid & MA_LOV));
786 /* just ignore blocks occupied by extend attributes on MDS */
788 /* if no object is allocated on osts, the size on mds is valid.
790 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
791 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL) {
792 if (mdt_hsm_is_released(ma->ma_lmm)) {
793 /* A released file stores its size on MDS. */
794 /* But return 1 block for released file, unless tools
795 * like tar will consider it fully sparse. (LU-3864)
797 if (unlikely(b->mbo_size == 0))
801 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
802 } else if (info->mti_som_valid) { /* som is valid */
803 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
807 if (fid != NULL && (b->mbo_valid & OBD_MD_FLSIZE))
808 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
809 PFID(fid), (unsigned long long)b->mbo_size);
812 if (!IS_ERR_OR_NULL(nodemap))
813 nodemap_putref(nodemap);
816 static inline int mdt_body_has_lov(const struct lu_attr *la,
817 const struct mdt_body *body)
819 return (S_ISREG(la->la_mode) && (body->mbo_valid & OBD_MD_FLEASIZE)) ||
820 (S_ISDIR(la->la_mode) && (body->mbo_valid & OBD_MD_FLDIREA));
823 void mdt_client_compatibility(struct mdt_thread_info *info)
825 struct mdt_body *body;
826 struct ptlrpc_request *req = mdt_info_req(info);
827 struct obd_export *exp = req->rq_export;
828 struct md_attr *ma = &info->mti_attr;
829 struct lu_attr *la = &ma->ma_attr;
832 if (exp_connect_layout(exp))
833 /* the client can deal with 16-bit lmm_stripe_count */
836 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
838 if (!mdt_body_has_lov(la, body))
841 /* now we have a reply with a lov for a client not compatible with the
842 * layout lock so we have to clean the layout generation number */
843 if (S_ISREG(la->la_mode))
844 ma->ma_lmm->lmm_layout_gen = 0;
848 static int mdt_attr_get_eabuf_size(struct mdt_thread_info *info,
849 struct mdt_object *o)
851 const struct lu_env *env = info->mti_env;
854 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
863 /* Is it a directory? Let's check for the LMV as well */
864 if (S_ISDIR(lu_object_attr(&mdt_object_child(o)->mo_lu))) {
865 rc2 = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
869 rc2 = mo_xattr_get(env, mdt_object_child(o),
871 XATTR_NAME_DEFAULT_LMV);
873 if ((rc2 < 0 && rc2 != -ENODATA) || (rc2 > rc))
881 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
884 const struct lu_env *env = info->mti_env;
888 LASSERT(info->mti_big_lmm_used == 0);
889 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
893 /* big_lmm may need to be grown */
894 if (info->mti_big_lmmsize < rc) {
895 int size = size_roundup_power2(rc);
897 if (info->mti_big_lmmsize > 0) {
898 /* free old buffer */
899 LASSERT(info->mti_big_lmm);
900 OBD_FREE_LARGE(info->mti_big_lmm,
901 info->mti_big_lmmsize);
902 info->mti_big_lmm = NULL;
903 info->mti_big_lmmsize = 0;
906 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
907 if (info->mti_big_lmm == NULL)
909 info->mti_big_lmmsize = size;
911 LASSERT(info->mti_big_lmmsize >= rc);
913 info->mti_buf.lb_buf = info->mti_big_lmm;
914 info->mti_buf.lb_len = info->mti_big_lmmsize;
915 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
920 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
921 struct md_attr *ma, const char *name)
923 struct md_object *next = mdt_object_child(o);
924 struct lu_buf *buf = &info->mti_buf;
927 if (strcmp(name, XATTR_NAME_LOV) == 0) {
928 buf->lb_buf = ma->ma_lmm;
929 buf->lb_len = ma->ma_lmm_size;
930 LASSERT(!(ma->ma_valid & MA_LOV));
931 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
932 buf->lb_buf = ma->ma_lmv;
933 buf->lb_len = ma->ma_lmv_size;
934 LASSERT(!(ma->ma_valid & MA_LMV));
935 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
936 buf->lb_buf = ma->ma_lmv;
937 buf->lb_len = ma->ma_lmv_size;
938 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
943 LASSERT(buf->lb_buf);
945 rc = mo_xattr_get(info->mti_env, next, buf, name);
949 if (strcmp(name, XATTR_NAME_LOV) == 0) {
950 if (info->mti_big_lmm_used)
951 ma->ma_lmm = info->mti_big_lmm;
953 /* NOT return LOV EA with hole to old client. */
954 if (unlikely(le32_to_cpu(ma->ma_lmm->lmm_pattern) &
955 LOV_PATTERN_F_HOLE) &&
956 !(exp_connect_flags(info->mti_exp) &
957 OBD_CONNECT_LFSCK)) {
960 ma->ma_lmm_size = rc;
961 ma->ma_valid |= MA_LOV;
963 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
964 if (info->mti_big_lmm_used)
965 ma->ma_lmv = info->mti_big_lmm;
967 ma->ma_lmv_size = rc;
968 ma->ma_valid |= MA_LMV;
969 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
970 ma->ma_lmv_size = rc;
971 ma->ma_valid |= MA_LMV_DEF;
974 /* Update mdt_max_mdsize so all clients will be aware that */
975 if (info->mti_mdt->mdt_max_mdsize < rc)
976 info->mti_mdt->mdt_max_mdsize = rc;
979 } else if (rc == -ENODATA) {
982 } else if (rc == -ERANGE) {
983 /* Default LMV has fixed size, so it must be able to fit
984 * in the original buffer */
985 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
987 rc = mdt_big_xattr_get(info, o, name);
989 info->mti_big_lmm_used = 1;
997 int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
1000 struct lu_buf *buf = &info->mti_buf;
1001 struct link_ea_header *leh;
1002 struct link_ea_entry *lee;
1006 buf->lb_buf = info->mti_big_lmm;
1007 buf->lb_len = info->mti_big_lmmsize;
1008 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
1009 buf, XATTR_NAME_LINK);
1010 /* ignore errors, MA_PFID won't be set and it is
1011 * up to the caller to treat this as an error */
1012 if (rc == -ERANGE || buf->lb_len == 0) {
1013 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
1014 buf->lb_buf = info->mti_big_lmm;
1015 buf->lb_len = info->mti_big_lmmsize;
1020 if (rc < sizeof(*leh)) {
1021 CERROR("short LinkEA on "DFID": rc = %d\n",
1022 PFID(mdt_object_fid(o)), rc);
1026 leh = (struct link_ea_header *) buf->lb_buf;
1027 lee = (struct link_ea_entry *)(leh + 1);
1028 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
1029 leh->leh_magic = LINK_EA_MAGIC;
1030 leh->leh_reccount = __swab32(leh->leh_reccount);
1031 leh->leh_len = __swab64(leh->leh_len);
1033 if (leh->leh_magic != LINK_EA_MAGIC)
1035 if (leh->leh_reccount == 0)
1038 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
1039 fid_be_to_cpu(pfid, pfid);
1044 int mdt_attr_get_complex(struct mdt_thread_info *info,
1045 struct mdt_object *o, struct md_attr *ma)
1047 const struct lu_env *env = info->mti_env;
1048 struct md_object *next = mdt_object_child(o);
1049 struct lu_buf *buf = &info->mti_buf;
1050 int need = ma->ma_need;
1057 if (mdt_object_exists(o) == 0)
1058 GOTO(out, rc = -ENOENT);
1059 mode = lu_object_attr(&next->mo_lu);
1061 if (need & MA_INODE) {
1062 ma->ma_need = MA_INODE;
1063 rc = mo_attr_get(env, next, ma);
1068 (void) mdt_get_som(info, o, ma);
1069 ma->ma_valid |= MA_INODE;
1072 if (need & MA_PFID) {
1073 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
1075 ma->ma_valid |= MA_PFID;
1076 /* ignore this error, parent fid is not mandatory */
1080 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
1081 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
1086 if (need & MA_LMV && S_ISDIR(mode)) {
1087 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
1092 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
1093 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
1099 * In the handle of MA_INODE, we may already get the SOM attr.
1101 if (need & MA_SOM && S_ISREG(mode) && !(ma->ma_valid & MA_SOM)) {
1102 rc = mdt_get_som(info, o, ma);
1107 if (need & MA_HSM && S_ISREG(mode)) {
1108 buf->lb_buf = info->mti_xattr_buf;
1109 buf->lb_len = sizeof(info->mti_xattr_buf);
1110 CLASSERT(sizeof(struct hsm_attrs) <=
1111 sizeof(info->mti_xattr_buf));
1112 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
1113 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
1115 ma->ma_valid |= MA_HSM;
1116 else if (rc2 < 0 && rc2 != -ENODATA)
1117 GOTO(out, rc = rc2);
1120 #ifdef CONFIG_FS_POSIX_ACL
1121 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
1122 buf->lb_buf = ma->ma_acl;
1123 buf->lb_len = ma->ma_acl_size;
1124 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
1126 ma->ma_acl_size = rc2;
1127 ma->ma_valid |= MA_ACL_DEF;
1128 } else if (rc2 == -ENODATA) {
1130 ma->ma_acl_size = 0;
1132 GOTO(out, rc = rc2);
1137 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = %#llx ma_lmm=%p\n",
1138 rc, ma->ma_valid, ma->ma_lmm);
1142 static int mdt_getattr_internal(struct mdt_thread_info *info,
1143 struct mdt_object *o, int ma_need)
1145 struct md_object *next = mdt_object_child(o);
1146 const struct mdt_body *reqbody = info->mti_body;
1147 struct ptlrpc_request *req = mdt_info_req(info);
1148 struct md_attr *ma = &info->mti_attr;
1149 struct lu_attr *la = &ma->ma_attr;
1150 struct req_capsule *pill = info->mti_pill;
1151 const struct lu_env *env = info->mti_env;
1152 struct mdt_body *repbody;
1153 struct lu_buf *buffer = &info->mti_buf;
1154 struct obd_export *exp = info->mti_exp;
1158 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
1159 RETURN(err_serious(-ENOMEM));
1161 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1165 if (mdt_object_remote(o)) {
1166 /* This object is located on remote node.*/
1167 /* Return -ENOTSUPP for old client */
1168 if (!mdt_is_dne_client(req->rq_export))
1169 GOTO(out, rc = -ENOTSUPP);
1171 repbody->mbo_fid1 = *mdt_object_fid(o);
1172 repbody->mbo_valid = OBD_MD_FLID | OBD_MD_MDS;
1176 if (reqbody->mbo_eadatasize > 0) {
1177 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
1178 if (buffer->lb_buf == NULL)
1179 GOTO(out, rc = -EPROTO);
1180 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD,
1183 buffer->lb_buf = NULL;
1185 ma_need &= ~(MA_LOV | MA_LMV);
1186 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
1187 mdt_obd_name(info->mti_mdt),
1188 req->rq_export->exp_client_uuid.uuid);
1191 /* If it is dir object and client require MEA, then we got MEA */
1192 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1193 (reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
1194 /* Assumption: MDT_MD size is enough for lmv size. */
1195 ma->ma_lmv = buffer->lb_buf;
1196 ma->ma_lmv_size = buffer->lb_len;
1197 ma->ma_need = MA_INODE;
1198 if (ma->ma_lmv_size > 0) {
1199 if (reqbody->mbo_valid & OBD_MD_MEA)
1200 ma->ma_need |= MA_LMV;
1201 else if (reqbody->mbo_valid & OBD_MD_DEFAULT_MEA)
1202 ma->ma_need |= MA_LMV_DEF;
1205 ma->ma_lmm = buffer->lb_buf;
1206 ma->ma_lmm_size = buffer->lb_len;
1207 ma->ma_need = MA_INODE | MA_HSM;
1208 if (ma->ma_lmm_size > 0)
1209 ma->ma_need |= MA_LOV;
1212 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1213 reqbody->mbo_valid & OBD_MD_FLDIREA &&
1214 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
1215 /* get default stripe info for this dir. */
1216 ma->ma_need |= MA_LOV_DEF;
1218 ma->ma_need |= ma_need;
1220 rc = mdt_attr_get_complex(info, o, ma);
1222 CDEBUG(rc == -ENOENT ? D_OTHER : D_ERROR,
1223 "%s: getattr error for "DFID": rc = %d\n",
1224 mdt_obd_name(info->mti_mdt),
1225 PFID(mdt_object_fid(o)), rc);
1229 /* if file is released, check if a restore is running */
1230 if (ma->ma_valid & MA_HSM) {
1231 repbody->mbo_valid |= OBD_MD_TSTATE;
1232 if ((ma->ma_hsm.mh_flags & HS_RELEASED) &&
1233 mdt_hsm_restore_is_running(info, mdt_object_fid(o)))
1234 repbody->mbo_t_state = MS_RESTORE;
1237 if (likely(ma->ma_valid & MA_INODE))
1238 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
1242 if (mdt_body_has_lov(la, reqbody)) {
1243 if (ma->ma_valid & MA_LOV) {
1244 LASSERT(ma->ma_lmm_size);
1245 repbody->mbo_eadatasize = ma->ma_lmm_size;
1246 if (S_ISDIR(la->la_mode))
1247 repbody->mbo_valid |= OBD_MD_FLDIREA;
1249 repbody->mbo_valid |= OBD_MD_FLEASIZE;
1250 mdt_dump_lmm(D_INFO, ma->ma_lmm, repbody->mbo_valid);
1252 if (ma->ma_valid & MA_LMV) {
1253 /* Return -ENOTSUPP for old client */
1254 if (!mdt_is_striped_client(req->rq_export))
1257 LASSERT(S_ISDIR(la->la_mode));
1258 mdt_dump_lmv(D_INFO, ma->ma_lmv);
1259 repbody->mbo_eadatasize = ma->ma_lmv_size;
1260 repbody->mbo_valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
1262 if (ma->ma_valid & MA_LMV_DEF) {
1263 /* Return -ENOTSUPP for old client */
1264 if (!mdt_is_striped_client(req->rq_export))
1266 LASSERT(S_ISDIR(la->la_mode));
1267 mdt_dump_lmv(D_INFO, ma->ma_lmv);
1268 repbody->mbo_eadatasize = ma->ma_lmv_size;
1269 repbody->mbo_valid |= (OBD_MD_FLDIREA |
1270 OBD_MD_DEFAULT_MEA);
1272 } else if (S_ISLNK(la->la_mode) &&
1273 reqbody->mbo_valid & OBD_MD_LINKNAME) {
1274 buffer->lb_buf = ma->ma_lmm;
1275 /* eadatasize from client includes NULL-terminator, so
1276 * there is no need to read it */
1277 buffer->lb_len = reqbody->mbo_eadatasize - 1;
1278 rc = mo_readlink(env, next, buffer);
1279 if (unlikely(rc <= 0)) {
1280 CERROR("%s: readlink failed for "DFID": rc = %d\n",
1281 mdt_obd_name(info->mti_mdt),
1282 PFID(mdt_object_fid(o)), rc);
1285 int print_limit = min_t(int, PAGE_SIZE - 128, rc);
1287 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
1289 repbody->mbo_valid |= OBD_MD_LINKNAME;
1290 /* we need to report back size with NULL-terminator
1291 * because client expects that */
1292 repbody->mbo_eadatasize = rc + 1;
1293 if (repbody->mbo_eadatasize != reqbody->mbo_eadatasize)
1294 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
1295 "on "DFID ", expected %d\n",
1296 mdt_obd_name(info->mti_mdt),
1297 rc, PFID(mdt_object_fid(o)),
1298 reqbody->mbo_eadatasize - 1);
1299 /* NULL terminate */
1300 ((char *)ma->ma_lmm)[rc] = 0;
1302 /* If the total CDEBUG() size is larger than a page, it
1303 * will print a warning to the console, avoid this by
1304 * printing just the last part of the symlink. */
1305 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
1306 print_limit < rc ? "..." : "", print_limit,
1307 (char *)ma->ma_lmm + rc - print_limit, rc);
1312 if (reqbody->mbo_valid & OBD_MD_FLMODEASIZE) {
1313 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
1314 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
1315 CDEBUG(D_INODE, "changing the max MD size to %u\n",
1316 repbody->mbo_max_mdsize);
1319 #ifdef CONFIG_FS_POSIX_ACL
1320 if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
1321 (reqbody->mbo_valid & OBD_MD_FLACL)) {
1322 struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
1323 if (IS_ERR(nodemap))
1324 RETURN(PTR_ERR(nodemap));
1326 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
1327 nodemap_putref(nodemap);
1333 mdt_counter_incr(req, LPROC_MDT_GETATTR);
1338 static int mdt_getattr(struct tgt_session_info *tsi)
1340 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1341 struct mdt_object *obj = info->mti_object;
1342 struct req_capsule *pill = info->mti_pill;
1343 struct mdt_body *reqbody;
1344 struct mdt_body *repbody;
1348 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1350 LASSERT(obj != NULL);
1351 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1353 /* Special case for Data-on-MDT files to get data version */
1354 if (unlikely(reqbody->mbo_valid & OBD_MD_FLDATAVERSION)) {
1355 rc = mdt_data_version_get(tsi);
1359 /* Unlike intent case where we need to pre-fill out buffers early on
1360 * in intent policy for ldlm reasons, here we can have a much better
1361 * guess at EA size by just reading it from disk.
1362 * Exceptions are readdir and (missing) directory striping */
1364 if (reqbody->mbo_valid & OBD_MD_LINKNAME) {
1365 /* No easy way to know how long is the symlink, but it cannot
1366 * be more than PATH_MAX, so we allocate +1 */
1368 /* A special case for fs ROOT: getattr there might fetch
1369 * default EA for entire fs, not just for this dir!
1371 } else if (lu_fid_eq(mdt_object_fid(obj),
1372 &info->mti_mdt->mdt_md_root_fid) &&
1373 (reqbody->mbo_valid & OBD_MD_FLDIREA) &&
1374 (lustre_msg_get_opc(mdt_info_req(info)->rq_reqmsg) ==
1376 /* Should the default strping be bigger, mdt_fix_reply
1377 * will reallocate */
1378 rc = DEF_REP_MD_SIZE;
1380 /* Read the actual EA size from disk */
1381 rc = mdt_attr_get_eabuf_size(info, obj);
1385 GOTO(out, rc = err_serious(rc));
1387 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, rc);
1389 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
1390 * by default. If the target object has more ACL entries, then
1391 * enlarge the buffer when necessary. */
1392 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
1393 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
1395 rc = req_capsule_server_pack(pill);
1396 if (unlikely(rc != 0))
1397 GOTO(out, rc = err_serious(rc));
1399 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1400 LASSERT(repbody != NULL);
1401 repbody->mbo_eadatasize = 0;
1402 repbody->mbo_aclsize = 0;
1404 rc = mdt_check_ucred(info);
1406 GOTO(out_shrink, rc);
1408 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1410 rc = mdt_getattr_internal(info, obj, 0);
1413 mdt_client_compatibility(info);
1414 rc2 = mdt_fix_reply(info);
1418 mdt_thread_info_fini(info);
1423 * Handler of layout intent RPC requiring the layout modification
1425 * \param[in] info thread environment
1426 * \param[in] obj object
1427 * \param[in] layout layout change descriptor
1429 * \retval 0 on success
1430 * \retval < 0 error code
1432 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
1433 struct md_layout_change *layout)
1435 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LOCAL];
1439 if (!mdt_object_exists(obj))
1440 GOTO(out, rc = -ENOENT);
1442 if (!S_ISREG(lu_object_attr(&obj->mot_obj)))
1443 GOTO(out, rc = -EINVAL);
1445 rc = mo_permission(info->mti_env, NULL, mdt_object_child(obj), NULL,
1450 /* take layout lock to prepare layout change */
1451 mdt_lock_reg_init(lh, LCK_EX);
1452 rc = mdt_object_lock(info, obj, lh, MDS_INODELOCK_LAYOUT);
1456 mutex_lock(&obj->mot_som_mutex);
1457 rc = mo_layout_change(info->mti_env, mdt_object_child(obj), layout);
1458 mutex_unlock(&obj->mot_som_mutex);
1459 mdt_object_unlock(info, obj, lh, 1);
1465 * Exchange MOF_LOV_CREATED flags between two objects after a
1466 * layout swap. No assumption is made on whether o1 or o2 have
1467 * created objects or not.
1469 * \param[in,out] o1 First swap layout object
1470 * \param[in,out] o2 Second swap layout object
1472 static void mdt_swap_lov_flag(struct mdt_object *o1, struct mdt_object *o2)
1474 unsigned int o1_lov_created = o1->mot_lov_created;
1476 mutex_lock(&o1->mot_lov_mutex);
1477 mutex_lock(&o2->mot_lov_mutex);
1479 o1->mot_lov_created = o2->mot_lov_created;
1480 o2->mot_lov_created = o1_lov_created;
1482 mutex_unlock(&o2->mot_lov_mutex);
1483 mutex_unlock(&o1->mot_lov_mutex);
1486 static int mdt_swap_layouts(struct tgt_session_info *tsi)
1488 struct mdt_thread_info *info;
1489 struct ptlrpc_request *req = tgt_ses_req(tsi);
1490 struct obd_export *exp = req->rq_export;
1491 struct mdt_object *o1, *o2, *o;
1492 struct mdt_lock_handle *lh1, *lh2;
1493 struct mdc_swap_layouts *msl;
1497 /* client does not support layout lock, so layout swaping
1499 * FIXME: there is a problem for old clients which don't support
1500 * layout lock yet. If those clients have already opened the file
1501 * they won't be notified at all so that old layout may still be
1502 * used to do IO. This can be fixed after file release is landed by
1503 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1504 if (!exp_connect_layout(exp))
1505 RETURN(-EOPNOTSUPP);
1507 info = tsi2mdt_info(tsi);
1509 if (info->mti_dlm_req != NULL)
1510 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
1512 o1 = info->mti_object;
1513 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1514 &info->mti_body->mbo_fid2);
1516 GOTO(out, rc = PTR_ERR(o));
1518 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1519 GOTO(put, rc = -ENOENT);
1521 rc = lu_fid_cmp(&info->mti_body->mbo_fid1, &info->mti_body->mbo_fid2);
1522 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1528 /* permission check. Make sure the calling process having permission
1529 * to write both files. */
1530 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1535 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1540 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1542 GOTO(put, rc = -EPROTO);
1544 lh1 = &info->mti_lh[MDT_LH_NEW];
1545 mdt_lock_reg_init(lh1, LCK_EX);
1546 lh2 = &info->mti_lh[MDT_LH_OLD];
1547 mdt_lock_reg_init(lh2, LCK_EX);
1549 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1550 MDS_INODELOCK_XATTR);
1554 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1555 MDS_INODELOCK_XATTR);
1559 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1560 mdt_object_child(o2), msl->msl_flags);
1564 mdt_swap_lov_flag(o1, o2);
1567 mdt_object_unlock(info, o2, lh2, rc);
1569 mdt_object_unlock(info, o1, lh1, rc);
1571 mdt_object_put(info->mti_env, o);
1573 mdt_thread_info_fini(info);
1577 static int mdt_raw_lookup(struct mdt_thread_info *info,
1578 struct mdt_object *parent,
1579 const struct lu_name *lname,
1580 struct ldlm_reply *ldlm_rep)
1582 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1586 LASSERT(!info->mti_cross_ref);
1588 /* Only got the fid of this obj by name */
1589 fid_zero(child_fid);
1590 rc = mdo_lookup(info->mti_env, mdt_object_child(info->mti_object),
1591 lname, child_fid, &info->mti_spec);
1593 struct mdt_body *repbody;
1595 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1596 repbody->mbo_fid1 = *child_fid;
1597 repbody->mbo_valid = OBD_MD_FLID;
1598 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1599 } else if (rc == -ENOENT) {
1600 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1607 * UPDATE lock should be taken against parent, and be released before exit;
1608 * child_bits lock should be taken against child, and be returned back:
1609 * (1)normal request should release the child lock;
1610 * (2)intent request will grant the lock to client.
1612 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1613 struct mdt_lock_handle *lhc,
1615 struct ldlm_reply *ldlm_rep)
1617 struct ptlrpc_request *req = mdt_info_req(info);
1618 struct mdt_body *reqbody = NULL;
1619 struct mdt_object *parent = info->mti_object;
1620 struct mdt_object *child;
1621 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1622 struct lu_name *lname = NULL;
1623 struct mdt_lock_handle *lhp = NULL;
1624 struct ldlm_lock *lock;
1625 struct req_capsule *pill = info->mti_pill;
1633 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1634 LASSERT(ergo(is_resent,
1635 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1640 if (info->mti_cross_ref) {
1641 /* Only getattr on the child. Parent is on another node. */
1642 mdt_set_disposition(info, ldlm_rep,
1643 DISP_LOOKUP_EXECD | DISP_LOOKUP_POS);
1645 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1647 PFID(mdt_object_fid(child)), ldlm_rep);
1649 rc = mdt_check_resent_lock(info, child, lhc);
1652 } else if (rc > 0) {
1653 mdt_lock_handle_init(lhc);
1654 mdt_lock_reg_init(lhc, LCK_PR);
1657 * Object's name entry is on another MDS, it will
1658 * request PERM lock only because LOOKUP lock is owned
1659 * by the MDS where name entry resides.
1661 * TODO: it should try layout lock too. - Jinshan
1663 child_bits &= ~(MDS_INODELOCK_LOOKUP |
1664 MDS_INODELOCK_LAYOUT);
1665 child_bits |= MDS_INODELOCK_PERM;
1667 rc = mdt_object_lock(info, child, lhc, child_bits);
1672 /* Finally, we can get attr for child. */
1673 if (!mdt_object_exists(child)) {
1674 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
1676 "remote object doesn't exist.");
1677 mdt_object_unlock(info, child, lhc, 1);
1681 rc = mdt_getattr_internal(info, child, 0);
1682 if (unlikely(rc != 0))
1683 mdt_object_unlock(info, child, lhc, 1);
1685 mdt_pack_secctx_in_reply(info, child);
1690 lname = &info->mti_name;
1691 mdt_name_unpack(pill, &RMF_NAME, lname, MNF_FIX_ANON);
1693 if (lu_name_is_valid(lname)) {
1694 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", "
1695 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1696 PNAME(lname), ldlm_rep);
1698 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1699 if (unlikely(reqbody == NULL))
1700 RETURN(err_serious(-EPROTO));
1702 *child_fid = reqbody->mbo_fid2;
1704 if (unlikely(!fid_is_sane(child_fid)))
1705 RETURN(err_serious(-EINVAL));
1707 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1709 PFID(mdt_object_fid(parent)),
1710 PFID(&reqbody->mbo_fid2), ldlm_rep);
1713 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1715 if (unlikely(!mdt_object_exists(parent)) && lu_name_is_valid(lname)) {
1716 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1718 "Parent doesn't exist!");
1722 if (mdt_object_remote(parent)) {
1723 CERROR("%s: parent "DFID" is on remote target\n",
1724 mdt_obd_name(info->mti_mdt),
1725 PFID(mdt_object_fid(parent)));
1729 if (lu_name_is_valid(lname)) {
1730 /* Always allow to lookup ".." */
1731 if (unlikely(lname->ln_namelen == 2 &&
1732 lname->ln_name[0] == '.' &&
1733 lname->ln_name[1] == '.'))
1734 info->mti_spec.sp_permitted = 1;
1736 if (info->mti_body->mbo_valid == OBD_MD_FLID) {
1737 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1742 /* step 1: lock parent only if parent is a directory */
1743 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
1744 lhp = &info->mti_lh[MDT_LH_PARENT];
1745 mdt_lock_pdo_init(lhp, LCK_PR, lname);
1746 rc = mdt_object_lock(info, parent, lhp,
1747 MDS_INODELOCK_UPDATE);
1748 if (unlikely(rc != 0))
1752 /* step 2: lookup child's fid by name */
1753 fid_zero(child_fid);
1754 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
1755 child_fid, &info->mti_spec);
1757 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1760 GOTO(out_parent, rc);
1763 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1766 *step 3: find the child object by fid & lock it.
1767 * regardless if it is local or remote.
1769 *Note: LU-3240 (commit 762f2114d282a98ebfa4dbbeea9298a8088ad24e)
1770 * set parent dir fid the same as child fid in getattr by fid case
1771 * we should not lu_object_find() the object again, could lead
1772 * to hung if there is a concurrent unlink destroyed the object.
1774 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
1775 mdt_object_get(info->mti_env, parent);
1778 child = mdt_object_find(info->mti_env, info->mti_mdt,
1782 if (unlikely(IS_ERR(child)))
1783 GOTO(out_parent, rc = PTR_ERR(child));
1785 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout * 2);
1786 if (!mdt_object_exists(child)) {
1787 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1789 "Object doesn't exist!");
1790 GOTO(out_child, rc = -ENOENT);
1793 rc = mdt_check_resent_lock(info, child, lhc);
1795 GOTO(out_child, rc);
1796 } else if (rc > 0) {
1797 mdt_lock_handle_init(lhc);
1798 mdt_lock_reg_init(lhc, LCK_PR);
1800 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1801 mdt_object_exists(child) && !mdt_object_remote(child)) {
1802 struct md_attr *ma = &info->mti_attr;
1805 ma->ma_need = MA_INODE;
1806 rc = mdt_attr_get_complex(info, child, ma);
1807 if (unlikely(rc != 0))
1808 GOTO(out_child, rc);
1810 /* If the file has not been changed for some time, we
1811 * return not only a LOOKUP lock, but also an UPDATE
1812 * lock and this might save us RPC on later STAT. For
1813 * directories, it also let negative dentry cache start
1814 * working for this dir. */
1815 if (ma->ma_valid & MA_INODE &&
1816 ma->ma_attr.la_valid & LA_CTIME &&
1817 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1818 ma->ma_attr.la_ctime < ktime_get_real_seconds())
1819 child_bits |= MDS_INODELOCK_UPDATE;
1822 /* layout lock must be granted in a best-effort way
1823 * for IT operations */
1824 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1825 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
1826 !mdt_object_remote(child) && ldlm_rep != NULL) {
1827 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1828 exp_connect_layout(info->mti_exp)) {
1829 /* try to grant layout lock for regular file. */
1830 try_bits = MDS_INODELOCK_LAYOUT;
1832 /* Acquire DOM lock in advance for data-on-mdt file */
1833 if (child != parent)
1834 try_bits |= MDS_INODELOCK_DOM;
1837 if (try_bits != 0) {
1838 /* try layout lock, it may fail to be granted due to
1839 * contention at LOOKUP or UPDATE */
1840 rc = mdt_object_lock_try(info, child, lhc, &child_bits,
1842 if (child_bits & MDS_INODELOCK_LAYOUT)
1845 /* Do not enqueue the UPDATE lock from MDT(cross-MDT),
1846 * client will enqueue the lock to the remote MDT */
1847 if (mdt_object_remote(child))
1848 child_bits &= ~MDS_INODELOCK_UPDATE;
1849 rc = mdt_object_lock(info, child, lhc, child_bits);
1851 if (unlikely(rc != 0))
1852 GOTO(out_child, rc);
1855 /* finally, we can get attr for child. */
1856 rc = mdt_getattr_internal(info, child, ma_need);
1857 if (unlikely(rc != 0)) {
1858 mdt_object_unlock(info, child, lhc, 1);
1859 GOTO(out_child, rc);
1862 mdt_pack_secctx_in_reply(info, child);
1864 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1866 /* Debugging code. */
1867 LDLM_DEBUG(lock, "Returning lock to client");
1868 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1869 &lock->l_resource->lr_name),
1870 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1871 PLDLMRES(lock->l_resource),
1872 PFID(mdt_object_fid(child)));
1874 if (S_ISREG(lu_object_attr(&child->mot_obj)) &&
1875 mdt_object_exists(child) && !mdt_object_remote(child) &&
1877 mdt_object_put(info->mti_env, child);
1878 rc = mdt_pack_size2body(info, child_fid,
1880 if (rc != 0 && child_bits & MDS_INODELOCK_DOM) {
1881 /* DOM lock was taken in advance but this is
1882 * not DoM file. Drop the lock.
1884 lock_res_and_lock(lock);
1885 ldlm_inodebits_drop(lock, MDS_INODELOCK_DOM);
1886 unlock_res_and_lock(lock);
1888 LDLM_LOCK_PUT(lock);
1889 GOTO(out_parent, rc = 0);
1891 LDLM_LOCK_PUT(lock);
1896 mdt_object_put(info->mti_env, child);
1899 mdt_object_unlock(info, parent, lhp, 1);
1903 /* normal handler: should release the child lock */
1904 static int mdt_getattr_name(struct tgt_session_info *tsi)
1906 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1907 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1908 struct mdt_body *reqbody;
1909 struct mdt_body *repbody;
1913 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1914 LASSERT(reqbody != NULL);
1915 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1916 LASSERT(repbody != NULL);
1918 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1919 repbody->mbo_eadatasize = 0;
1920 repbody->mbo_aclsize = 0;
1922 rc = mdt_init_ucred_intent_getattr(info, reqbody);
1924 GOTO(out_shrink, rc);
1926 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1927 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1928 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1929 lhc->mlh_reg_lh.cookie = 0;
1931 mdt_exit_ucred(info);
1934 mdt_client_compatibility(info);
1935 rc2 = mdt_fix_reply(info);
1938 mdt_thread_info_fini(info);
1942 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1943 void *karg, void __user *uarg);
1945 static int mdt_set_info(struct tgt_session_info *tsi)
1947 struct ptlrpc_request *req = tgt_ses_req(tsi);
1950 int keylen, vallen, rc = 0;
1954 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
1956 DEBUG_REQ(D_HA, req, "no set_info key");
1957 RETURN(err_serious(-EFAULT));
1960 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
1963 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
1965 DEBUG_REQ(D_HA, req, "no set_info val");
1966 RETURN(err_serious(-EFAULT));
1969 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
1972 /* Swab any part of val you need to here */
1973 if (KEY_IS(KEY_READ_ONLY)) {
1974 spin_lock(&req->rq_export->exp_lock);
1976 *exp_connect_flags_ptr(req->rq_export) |=
1979 *exp_connect_flags_ptr(req->rq_export) &=
1980 ~OBD_CONNECT_RDONLY;
1981 spin_unlock(&req->rq_export->exp_lock);
1982 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1983 struct changelog_setinfo *cs = val;
1985 if (vallen != sizeof(*cs)) {
1986 CERROR("%s: bad changelog_clear setinfo size %d\n",
1987 tgt_name(tsi->tsi_tgt), vallen);
1990 if (ptlrpc_req_need_swab(req)) {
1991 __swab64s(&cs->cs_recno);
1992 __swab32s(&cs->cs_id);
1995 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
1997 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
1999 obd_export_evict_by_nid(req->rq_export->exp_obd, val);
2006 static int mdt_readpage(struct tgt_session_info *tsi)
2008 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
2009 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
2010 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
2011 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
2012 struct mdt_body *repbody;
2018 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
2019 RETURN(err_serious(-ENOMEM));
2021 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
2022 if (repbody == NULL || reqbody == NULL)
2023 RETURN(err_serious(-EFAULT));
2026 * prepare @rdpg before calling lower layers and transfer itself. Here
2027 * reqbody->size contains offset of where to start to read and
2028 * reqbody->nlink contains number bytes to read.
2030 rdpg->rp_hash = reqbody->mbo_size;
2031 if (rdpg->rp_hash != reqbody->mbo_size) {
2032 CERROR("Invalid hash: %#llx != %#llx\n",
2033 rdpg->rp_hash, reqbody->mbo_size);
2037 rdpg->rp_attrs = reqbody->mbo_mode;
2038 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
2039 rdpg->rp_attrs |= LUDA_64BITHASH;
2040 rdpg->rp_count = min_t(unsigned int, reqbody->mbo_nlink,
2041 exp_max_brw_size(tsi->tsi_exp));
2042 rdpg->rp_npages = (rdpg->rp_count + PAGE_SIZE - 1) >>
2044 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
2045 if (rdpg->rp_pages == NULL)
2048 for (i = 0; i < rdpg->rp_npages; ++i) {
2049 rdpg->rp_pages[i] = alloc_page(GFP_NOFS);
2050 if (rdpg->rp_pages[i] == NULL)
2051 GOTO(free_rdpg, rc = -ENOMEM);
2054 /* call lower layers to fill allocated pages with directory data */
2055 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
2057 GOTO(free_rdpg, rc);
2059 /* send pages to client */
2060 rc = tgt_sendpage(tsi, rdpg, rc);
2065 for (i = 0; i < rdpg->rp_npages; i++)
2066 if (rdpg->rp_pages[i] != NULL)
2067 __free_page(rdpg->rp_pages[i]);
2068 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
2070 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
2076 static int mdt_fix_attr_ucred(struct mdt_thread_info *info, __u32 op)
2078 struct lu_ucred *uc = mdt_ucred_check(info);
2079 struct lu_attr *attr = &info->mti_attr.ma_attr;
2084 if (op != REINT_SETATTR) {
2085 if ((attr->la_valid & LA_UID) && (attr->la_uid != -1))
2086 attr->la_uid = uc->uc_fsuid;
2087 /* for S_ISGID, inherit gid from his parent, such work will be
2088 * done in cmm/mdd layer, here set all cases as uc->uc_fsgid. */
2089 if ((attr->la_valid & LA_GID) && (attr->la_gid != -1))
2090 attr->la_gid = uc->uc_fsgid;
2096 static inline bool mdt_is_readonly_open(struct mdt_thread_info *info, __u32 op)
2098 return op == REINT_OPEN &&
2099 !(info->mti_spec.sp_cr_flags & (MDS_FMODE_WRITE | MDS_OPEN_CREAT));
2102 static void mdt_preset_secctx_size(struct mdt_thread_info *info)
2104 struct req_capsule *pill = info->mti_pill;
2106 if (req_capsule_has_field(pill, &RMF_FILE_SECCTX,
2108 req_capsule_has_field(pill, &RMF_FILE_SECCTX_NAME,
2110 if (req_capsule_get_size(pill, &RMF_FILE_SECCTX_NAME,
2112 /* pre-set size in server part with max size */
2113 req_capsule_set_size(pill, &RMF_FILE_SECCTX,
2115 info->mti_mdt->mdt_max_ea_size);
2117 req_capsule_set_size(pill, &RMF_FILE_SECCTX,
2124 static int mdt_reint_internal(struct mdt_thread_info *info,
2125 struct mdt_lock_handle *lhc,
2128 struct req_capsule *pill = info->mti_pill;
2129 struct mdt_body *repbody;
2134 rc = mdt_reint_unpack(info, op);
2136 CERROR("Can't unpack reint, rc %d\n", rc);
2137 RETURN(err_serious(rc));
2141 /* check if the file system is set to readonly. O_RDONLY open
2142 * is still allowed even the file system is set to readonly mode */
2143 if (mdt_rdonly(info->mti_exp) && !mdt_is_readonly_open(info, op))
2144 RETURN(err_serious(-EROFS));
2146 /* for replay (no_create) lmm is not needed, client has it already */
2147 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2148 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2151 /* llog cookies are always 0, the field is kept for compatibility */
2152 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2153 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
2155 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
2156 * by default. If the target object has more ACL entries, then
2157 * enlarge the buffer when necessary. */
2158 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
2159 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
2160 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
2162 mdt_preset_secctx_size(info);
2164 rc = req_capsule_server_pack(pill);
2166 CERROR("Can't pack response, rc %d\n", rc);
2167 RETURN(err_serious(rc));
2170 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
2171 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
2173 repbody->mbo_eadatasize = 0;
2174 repbody->mbo_aclsize = 0;
2177 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
2179 /* for replay no cookkie / lmm need, because client have this already */
2180 if (info->mti_spec.no_create)
2181 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2182 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
2184 rc = mdt_init_ucred_reint(info);
2186 GOTO(out_shrink, rc);
2188 rc = mdt_fix_attr_ucred(info, op);
2190 GOTO(out_ucred, rc = err_serious(rc));
2192 rc = mdt_check_resent(info, mdt_reconstruct, lhc);
2194 GOTO(out_ucred, rc);
2195 } else if (rc == 1) {
2196 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
2197 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
2198 GOTO(out_ucred, rc);
2200 rc = mdt_reint_rec(info, lhc);
2203 mdt_exit_ucred(info);
2205 mdt_client_compatibility(info);
2207 rc2 = mdt_fix_reply(info);
2212 * Data-on-MDT optimization - read data along with OPEN and return it
2213 * in reply. Do that only if we have both DOM and LAYOUT locks.
2215 if (rc == 0 && op == REINT_OPEN && !req_is_replay(pill->rc_req) &&
2216 info->mti_attr.ma_lmm != NULL &&
2217 mdt_lmm_dom_entry(info->mti_attr.ma_lmm) == LMM_DOM_ONLY) {
2218 rc = mdt_dom_read_on_open(info, info->mti_mdt,
2225 static long mdt_reint_opcode(struct ptlrpc_request *req,
2226 const struct req_format **fmt)
2228 struct mdt_device *mdt;
2229 struct mdt_rec_reint *rec;
2232 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
2234 opc = rec->rr_opcode;
2235 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
2236 if (opc < REINT_MAX && fmt[opc] != NULL)
2237 req_capsule_extend(&req->rq_pill, fmt[opc]);
2239 mdt = mdt_exp2dev(req->rq_export);
2240 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
2241 " rc = %d\n", req->rq_export->exp_obd->obd_name,
2242 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
2243 opc = err_serious(-EFAULT);
2246 opc = err_serious(-EFAULT);
2251 static int mdt_reint(struct tgt_session_info *tsi)
2255 static const struct req_format *reint_fmts[REINT_MAX] = {
2256 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
2257 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
2258 [REINT_LINK] = &RQF_MDS_REINT_LINK,
2259 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
2260 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
2261 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
2262 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
2263 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
2264 [REINT_MIGRATE] = &RQF_MDS_REINT_MIGRATE,
2265 [REINT_RESYNC] = &RQF_MDS_REINT_RESYNC,
2270 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
2272 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2274 * No lock possible here from client to pass it to reint code
2277 rc = mdt_reint_internal(info, NULL, opc);
2278 mdt_thread_info_fini(info);
2283 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
2287 /* this should sync the whole device */
2288 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
2290 struct dt_device *dt = mdt->mdt_bottom;
2294 rc = dt->dd_ops->dt_sync(env, dt);
2298 /* this should sync this object */
2299 static int mdt_object_sync(const struct lu_env *env, struct obd_export *exp,
2300 struct mdt_object *mo)
2306 if (!mdt_object_exists(mo)) {
2307 CWARN("%s: non existing object "DFID": rc = %d\n",
2308 exp->exp_obd->obd_name, PFID(mdt_object_fid(mo)),
2313 rc = mo_object_sync(env, mdt_object_child(mo));
2318 static int mdt_sync(struct tgt_session_info *tsi)
2320 struct ptlrpc_request *req = tgt_ses_req(tsi);
2321 struct req_capsule *pill = tsi->tsi_pill;
2322 struct mdt_body *body;
2327 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
2328 RETURN(err_serious(-ENOMEM));
2330 if (fid_seq(&tsi->tsi_mdt_body->mbo_fid1) == 0) {
2331 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
2333 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2335 /* sync an object */
2336 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp,
2339 const struct lu_fid *fid;
2340 struct lu_attr *la = &info->mti_attr.ma_attr;
2342 info->mti_attr.ma_need = MA_INODE;
2343 info->mti_attr.ma_valid = 0;
2344 rc = mdt_attr_get_complex(info, info->mti_object,
2347 body = req_capsule_server_get(pill,
2349 fid = mdt_object_fid(info->mti_object);
2350 mdt_pack_attr2body(info, body, la, fid);
2353 mdt_thread_info_fini(info);
2356 mdt_counter_incr(req, LPROC_MDT_SYNC);
2361 static int mdt_data_sync(struct tgt_session_info *tsi)
2363 struct mdt_thread_info *info;
2364 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2365 struct ost_body *body = tsi->tsi_ost_body;
2366 struct ost_body *repbody;
2367 struct mdt_object *mo = NULL;
2373 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
2375 /* if no fid is specified then do nothing,
2376 * device sync is done via MDS_SYNC */
2377 if (fid_is_zero(&tsi->tsi_fid))
2380 mo = mdt_object_find(tsi->tsi_env, mdt, &tsi->tsi_fid);
2382 RETURN(PTR_ERR(mo));
2384 rc = mdt_object_sync(tsi->tsi_env, tsi->tsi_exp, mo);
2388 repbody->oa.o_oi = body->oa.o_oi;
2389 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
2391 info = tsi2mdt_info(tsi);
2392 ma = &info->mti_attr;
2393 ma->ma_need = MA_INODE;
2395 rc = mdt_attr_get_complex(info, mo, ma);
2397 obdo_from_la(&repbody->oa, &ma->ma_attr, VALID_FLAGS);
2400 mdt_thread_info_fini(info);
2405 mdt_object_put(tsi->tsi_env, mo);
2410 * Handle quota control requests to consult current usage/limit, but also
2411 * to configure quota enforcement
2413 static int mdt_quotactl(struct tgt_session_info *tsi)
2415 struct obd_export *exp = tsi->tsi_exp;
2416 struct req_capsule *pill = tsi->tsi_pill;
2417 struct obd_quotactl *oqctl, *repoqc;
2419 struct mdt_device *mdt = mdt_exp2dev(exp);
2420 struct lu_device *qmt = mdt->mdt_qmt_dev;
2421 struct lu_nodemap *nodemap;
2424 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
2426 RETURN(err_serious(-EPROTO));
2428 rc = req_capsule_server_pack(pill);
2430 RETURN(err_serious(rc));
2432 nodemap = nodemap_get_from_exp(exp);
2433 if (IS_ERR(nodemap))
2434 RETURN(PTR_ERR(nodemap));
2436 switch (oqctl->qc_cmd) {
2437 /* master quotactl */
2440 case LUSTRE_Q_SETDEFAULT:
2441 if (!nodemap_can_setquota(nodemap))
2442 GOTO(out_nodemap, rc = -EPERM);
2445 case LUSTRE_Q_GETDEFAULT:
2447 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2448 /* slave quotactl */
2453 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2454 GOTO(out_nodemap, rc = -EFAULT);
2458 switch (oqctl->qc_type) {
2460 id = nodemap_map_id(nodemap, NODEMAP_UID,
2461 NODEMAP_CLIENT_TO_FS, id);
2464 id = nodemap_map_id(nodemap, NODEMAP_GID,
2465 NODEMAP_CLIENT_TO_FS, id);
2468 /* todo: check/map project id */
2472 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2474 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
2476 GOTO(out_nodemap, rc = err_serious(-EFAULT));
2478 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA)
2479 barrier_exit(tsi->tsi_tgt->lut_bottom);
2481 if (oqctl->qc_id != id)
2482 swap(oqctl->qc_id, id);
2484 if (oqctl->qc_cmd == Q_SETINFO || oqctl->qc_cmd == Q_SETQUOTA) {
2485 if (unlikely(!barrier_entry(tsi->tsi_tgt->lut_bottom)))
2486 RETURN(-EINPROGRESS);
2489 switch (oqctl->qc_cmd) {
2495 case LUSTRE_Q_SETDEFAULT:
2496 case LUSTRE_Q_GETDEFAULT:
2497 /* forward quotactl request to QMT */
2498 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
2503 /* slave quotactl */
2504 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
2509 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2510 GOTO(out_nodemap, rc = -EFAULT);
2513 if (oqctl->qc_id != id)
2514 swap(oqctl->qc_id, id);
2521 nodemap_putref(nodemap);
2526 /** clone llog ctxt from child (mdd)
2527 * This allows remote llog (replicator) access.
2528 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2529 * context was originally set up, or we can handle them directly.
2530 * I choose the latter, but that means I need any llog
2531 * contexts set up by child to be accessable by the mdt. So we clone the
2532 * context into our context list here.
2534 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2537 struct md_device *next = mdt->mdt_child;
2538 struct llog_ctxt *ctxt;
2541 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2544 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2545 if (rc || ctxt == NULL) {
2549 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2551 CERROR("Can't set mdt ctxt %d\n", rc);
2556 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2557 struct mdt_device *mdt, int idx)
2559 struct llog_ctxt *ctxt;
2561 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2564 /* Put once for the get we just did, and once for the clone */
2565 llog_ctxt_put(ctxt);
2566 llog_ctxt_put(ctxt);
2571 * sec context handlers
2573 static int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
2575 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2581 * quota request handlers
2583 static int mdt_quota_dqacq(struct tgt_session_info *tsi)
2585 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2586 struct lu_device *qmt = mdt->mdt_qmt_dev;
2591 RETURN(err_serious(-EOPNOTSUPP));
2593 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
2597 struct mdt_object *mdt_object_new(const struct lu_env *env,
2598 struct mdt_device *d,
2599 const struct lu_fid *f)
2601 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2602 struct lu_object *o;
2603 struct mdt_object *m;
2606 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2607 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
2608 if (unlikely(IS_ERR(o)))
2609 m = (struct mdt_object *)o;
2615 struct mdt_object *mdt_object_find(const struct lu_env *env,
2616 struct mdt_device *d,
2617 const struct lu_fid *f)
2619 struct lu_object *o;
2620 struct mdt_object *m;
2623 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2624 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
2625 if (unlikely(IS_ERR(o)))
2626 m = (struct mdt_object *)o;
2634 * Asyncronous commit for mdt device.
2636 * Pass asynchonous commit call down the MDS stack.
2638 * \param env environment
2639 * \param mdt the mdt device
2641 static void mdt_device_commit_async(const struct lu_env *env,
2642 struct mdt_device *mdt)
2644 struct dt_device *dt = mdt->mdt_bottom;
2648 rc = dt->dd_ops->dt_commit_async(env, dt);
2649 if (unlikely(rc != 0))
2650 CWARN("%s: async commit start failed: rc = %d\n",
2651 mdt_obd_name(mdt), rc);
2652 atomic_inc(&mdt->mdt_async_commit_count);
2657 * Mark the lock as "synchonous".
2659 * Mark the lock to deffer transaction commit to the unlock time.
2661 * \param lock the lock to mark as "synchonous"
2663 * \see mdt_is_lock_sync
2664 * \see mdt_save_lock
2666 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2668 lock->l_ast_data = (void*)1;
2672 * Check whehter the lock "synchonous" or not.
2674 * \param lock the lock to check
2675 * \retval 1 the lock is "synchonous"
2676 * \retval 0 the lock isn't "synchronous"
2678 * \see mdt_set_lock_sync
2679 * \see mdt_save_lock
2681 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2683 return lock->l_ast_data != NULL;
2687 * Blocking AST for mdt locks.
2689 * Starts transaction commit if in case of COS lock conflict or
2690 * deffers such a commit to the mdt_save_lock.
2692 * \param lock the lock which blocks a request or cancelling lock
2693 * \param desc unused
2694 * \param data unused
2695 * \param flag indicates whether this cancelling or blocking callback
2697 * \see ldlm_blocking_ast_nocheck
2699 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2700 void *data, int flag)
2702 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2703 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2704 struct ldlm_cb_set_arg *arg = data;
2705 bool commit_async = false;
2709 if (flag == LDLM_CB_CANCELING)
2712 lock_res_and_lock(lock);
2713 if (lock->l_blocking_ast != mdt_blocking_ast) {
2714 unlock_res_and_lock(lock);
2718 /* A blocking ast may be sent from ldlm_lock_decref_internal
2719 * when the last reference to a local lock was released and
2720 * during blocking event from ldlm_work_bl_ast_lock().
2721 * The 'data' parameter is l_ast_data in the first case and
2722 * callback arguments in the second one. Distinguish them by that.
2724 if (!data || data == lock->l_ast_data || !arg->bl_desc)
2725 goto skip_cos_checks;
2727 if (lock->l_req_mode & (LCK_PW | LCK_EX)) {
2728 if (mdt_cos_is_enabled(mdt)) {
2729 if (!arg->bl_desc->bl_same_client)
2730 mdt_set_lock_sync(lock);
2731 } else if (mdt_slc_is_enabled(mdt) &&
2732 arg->bl_desc->bl_cos_incompat) {
2733 mdt_set_lock_sync(lock);
2735 * we may do extra commit here, but there is a small
2736 * window to miss a commit: lock was unlocked (saved),
2737 * then a conflict lock queued and we come here, but
2738 * REP-ACK not received, so lock was not converted to
2740 * Fortunately this window is quite small, so the
2741 * extra commit should be rare (not to say distributed
2742 * operation is rare too).
2744 commit_async = true;
2746 } else if (lock->l_req_mode == LCK_COS) {
2747 commit_async = true;
2751 rc = ldlm_blocking_ast_nocheck(lock);
2756 rc = lu_env_init(&env, LCT_LOCAL);
2757 if (unlikely(rc != 0))
2758 CWARN("%s: lu_env initialization failed, cannot "
2759 "start asynchronous commit: rc = %d\n",
2762 mdt_device_commit_async(&env, mdt);
2769 * Blocking AST for cross-MDT lock
2771 * Discard lock from uncommitted_slc_locks and cancel it.
2773 * \param lock the lock which blocks a request or cancelling lock
2774 * \param desc unused
2775 * \param data unused
2776 * \param flag indicates whether this cancelling or blocking callback
2777 * \retval 0 on success
2778 * \retval negative number on error
2780 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2781 void *data, int flag)
2787 case LDLM_CB_BLOCKING: {
2788 struct lustre_handle lockh;
2790 ldlm_lock2handle(lock, &lockh);
2791 rc = ldlm_cli_cancel(&lockh,
2792 ldlm_is_atomic_cb(lock) ? 0 : LCF_ASYNC);
2794 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2799 case LDLM_CB_CANCELING: {
2800 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2801 struct mdt_device *mdt =
2802 mdt_dev(obd->obd_lu_dev->ld_site->ls_top_dev);
2804 LDLM_DEBUG(lock, "Revoke remote lock\n");
2806 /* discard slc lock here so that it can be cleaned anytime,
2807 * especially for cleanup_resource() */
2808 tgt_discard_slc_lock(&mdt->mdt_lut, lock);
2810 /* once we cache lock, l_ast_data is set to mdt_object */
2811 if (lock->l_ast_data != NULL) {
2812 struct mdt_object *mo = lock->l_ast_data;
2815 rc = lu_env_init(&env, LCT_MD_THREAD);
2816 if (unlikely(rc != 0)) {
2817 CWARN("%s: lu_env initialization failed, object"
2818 "%p "DFID" is leaked!\n",
2820 PFID(mdt_object_fid(mo)));
2824 if (lock->l_policy_data.l_inodebits.bits &
2825 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)) {
2826 rc = mo_invalidate(&env, mdt_object_child(mo));
2827 mo->mot_cache_attr = 0;
2829 mdt_object_put(&env, mo);
2841 int mdt_check_resent_lock(struct mdt_thread_info *info,
2842 struct mdt_object *mo,
2843 struct mdt_lock_handle *lhc)
2845 /* the lock might already be gotten in ldlm_handle_enqueue() */
2846 if (unlikely(lustre_handle_is_used(&lhc->mlh_reg_lh))) {
2847 struct ptlrpc_request *req = mdt_info_req(info);
2848 struct ldlm_lock *lock;
2850 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
2851 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
2853 /* Lock is pinned by ldlm_handle_enqueue0() as it is
2854 * a resend case, however, it could be already destroyed
2855 * due to client eviction or a raced cancel RPC. */
2856 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx",
2857 lhc->mlh_reg_lh.cookie);
2861 if (!fid_res_name_eq(mdt_object_fid(mo),
2862 &lock->l_resource->lr_name)) {
2863 CWARN("%s: Although resent, but still not "
2864 "get child lock:"DFID"\n",
2865 info->mti_exp->exp_obd->obd_name,
2866 PFID(mdt_object_fid(mo)));
2867 LDLM_LOCK_PUT(lock);
2870 LDLM_LOCK_PUT(lock);
2876 static void mdt_remote_object_lock_created_cb(struct ldlm_lock *lock)
2878 mdt_object_get(NULL, lock->l_ast_data);
2881 int mdt_remote_object_lock_try(struct mdt_thread_info *mti,
2882 struct mdt_object *o, const struct lu_fid *fid,
2883 struct lustre_handle *lh, enum ldlm_mode mode,
2884 __u64 *ibits, __u64 trybits, bool cache)
2886 struct ldlm_enqueue_info *einfo = &mti->mti_remote_einfo;
2887 union ldlm_policy_data *policy = &mti->mti_policy;
2888 struct ldlm_res_id *res_id = &mti->mti_res_id;
2892 LASSERT(mdt_object_remote(o));
2894 fid_build_reg_res_name(fid, res_id);
2896 memset(einfo, 0, sizeof(*einfo));
2897 einfo->ei_type = LDLM_IBITS;
2898 einfo->ei_mode = mode;
2899 einfo->ei_cb_bl = mdt_remote_blocking_ast;
2900 einfo->ei_cb_cp = ldlm_completion_ast;
2901 einfo->ei_enq_slave = 0;
2902 einfo->ei_res_id = res_id;
2906 * if we cache lock, couple lock with mdt_object, so that object
2907 * can be easily found in lock ASTs.
2909 einfo->ei_cbdata = o;
2910 einfo->ei_cb_created = mdt_remote_object_lock_created_cb;
2913 memset(policy, 0, sizeof(*policy));
2914 policy->l_inodebits.bits = *ibits;
2915 policy->l_inodebits.try_bits = trybits;
2917 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
2920 /* Return successfully acquired bits to a caller */
2922 struct ldlm_lock *lock = ldlm_handle2lock(lh);
2925 *ibits = lock->l_policy_data.l_inodebits.bits;
2926 LDLM_LOCK_PUT(lock);
2931 int mdt_remote_object_lock(struct mdt_thread_info *mti, struct mdt_object *o,
2932 const struct lu_fid *fid, struct lustre_handle *lh,
2933 enum ldlm_mode mode, __u64 ibits, bool cache)
2935 return mdt_remote_object_lock_try(mti, o, fid, lh, mode, &ibits, 0,
2939 static int mdt_object_local_lock(struct mdt_thread_info *info,
2940 struct mdt_object *o,
2941 struct mdt_lock_handle *lh, __u64 *ibits,
2942 __u64 trybits, bool cos_incompat)
2944 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2945 union ldlm_policy_data *policy = &info->mti_policy;
2946 struct ldlm_res_id *res_id = &info->mti_res_id;
2947 __u64 dlmflags = 0, *cookie = NULL;
2951 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2952 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2953 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2954 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2957 LASSERT(lh->mlh_reg_mode == LCK_PW ||
2958 lh->mlh_reg_mode == LCK_EX);
2959 dlmflags |= LDLM_FL_COS_INCOMPAT;
2960 } else if (mdt_cos_is_enabled(info->mti_mdt)) {
2961 dlmflags |= LDLM_FL_COS_ENABLED;
2964 /* Only enqueue LOOKUP lock for remote object */
2965 LASSERT(ergo(mdt_object_remote(o), *ibits == MDS_INODELOCK_LOOKUP));
2967 /* Lease lock are granted with LDLM_FL_CANCEL_ON_BLOCK */
2968 if (lh->mlh_type == MDT_REG_LOCK && lh->mlh_reg_mode == LCK_EX &&
2969 *ibits == MDS_INODELOCK_OPEN)
2970 dlmflags |= LDLM_FL_CANCEL_ON_BLOCK;
2972 if (lh->mlh_type == MDT_PDO_LOCK) {
2973 /* check for exists after object is locked */
2974 if (mdt_object_exists(o) == 0) {
2975 /* Non-existent object shouldn't have PDO lock */
2978 /* Non-dir object shouldn't have PDO lock */
2979 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
2984 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2985 dlmflags |= LDLM_FL_ATOMIC_CB;
2988 cookie = &info->mti_exp->exp_handle.h_cookie;
2991 * Take PDO lock on whole directory and build correct @res_id for lock
2992 * on part of directory.
2994 if (lh->mlh_pdo_hash != 0) {
2995 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2996 mdt_lock_pdo_mode(info, o, lh);
2997 if (lh->mlh_pdo_mode != LCK_NL) {
2999 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
3000 * is never going to be sent to client and we do not
3001 * want it slowed down due to possible cancels.
3003 policy->l_inodebits.bits =
3004 *ibits & MDS_INODELOCK_UPDATE;
3005 policy->l_inodebits.try_bits =
3006 trybits & MDS_INODELOCK_UPDATE;
3007 /* at least one of them should be set */
3008 LASSERT(policy->l_inodebits.bits |
3009 policy->l_inodebits.try_bits);
3010 rc = mdt_fid_lock(info->mti_env, ns, &lh->mlh_pdo_lh,
3011 lh->mlh_pdo_mode, policy, res_id,
3013 if (unlikely(rc != 0))
3014 GOTO(out_unlock, rc);
3018 * Finish res_id initializing by name hash marking part of
3019 * directory which is taking modification.
3021 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
3024 policy->l_inodebits.bits = *ibits;
3025 policy->l_inodebits.try_bits = trybits;
3028 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
3029 * going to be sent to client. If it is - mdt_intent_policy() path will
3030 * fix it up and turn FL_LOCAL flag off.
3032 rc = mdt_fid_lock(info->mti_env, ns, &lh->mlh_reg_lh, lh->mlh_reg_mode,
3033 policy, res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
3037 mdt_object_unlock(info, o, lh, 1);
3038 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
3039 lh->mlh_pdo_hash != 0 &&
3040 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
3041 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
3043 /* Return successfully acquired bits to a caller */
3045 struct ldlm_lock *lock = ldlm_handle2lock(&lh->mlh_reg_lh);
3048 *ibits = lock->l_policy_data.l_inodebits.bits;
3049 LDLM_LOCK_PUT(lock);
3055 mdt_object_lock_internal(struct mdt_thread_info *info, struct mdt_object *o,
3056 struct mdt_lock_handle *lh, __u64 *ibits,
3057 __u64 trybits, bool cos_incompat)
3059 struct mdt_lock_handle *local_lh = NULL;
3063 if (!mdt_object_remote(o)) {
3064 rc = mdt_object_local_lock(info, o, lh, ibits, trybits,
3069 /* XXX do not support PERM/LAYOUT/XATTR lock for remote object yet */
3070 *ibits &= ~(MDS_INODELOCK_PERM | MDS_INODELOCK_LAYOUT |
3071 MDS_INODELOCK_XATTR);
3073 /* Only enqueue LOOKUP lock for remote object */
3074 if (*ibits & MDS_INODELOCK_LOOKUP) {
3075 __u64 local = MDS_INODELOCK_LOOKUP;
3077 rc = mdt_object_local_lock(info, o, lh, &local, 0,
3085 if ((*ibits | trybits) & MDS_INODELOCK_UPDATE) {
3086 /* Sigh, PDO needs to enqueue 2 locks right now, but
3087 * enqueue RPC can only request 1 lock, to avoid extra
3088 * RPC, so it will instead enqueue EX lock for remote
3089 * object anyway XXX*/
3090 if (lh->mlh_type == MDT_PDO_LOCK &&
3091 lh->mlh_pdo_hash != 0) {
3092 CDEBUG(D_INFO, "%s: "DFID" convert PDO lock to"
3093 "EX lock.\n", mdt_obd_name(info->mti_mdt),
3094 PFID(mdt_object_fid(o)));
3095 lh->mlh_pdo_hash = 0;
3096 lh->mlh_rreg_mode = LCK_EX;
3097 lh->mlh_type = MDT_REG_LOCK;
3100 rc = mdt_remote_object_lock_try(info, o, mdt_object_fid(o),
3103 ibits, trybits, false);
3104 if (rc != ELDLM_OK) {
3105 if (local_lh != NULL)
3106 mdt_object_unlock(info, o, local_lh, rc);
3111 /* other components like LFSCK can use lockless access
3112 * and populate cache, so we better invalidate it */
3113 mo_invalidate(info->mti_env, mdt_object_child(o));
3118 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
3119 struct mdt_lock_handle *lh, __u64 ibits)
3121 return mdt_object_lock_internal(info, o, lh, &ibits, 0, false);
3124 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
3125 struct mdt_lock_handle *lh, __u64 ibits,
3128 LASSERT(lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX);
3129 return mdt_object_lock_internal(info, o, lh, &ibits, 0,
3133 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
3134 struct mdt_lock_handle *lh, __u64 *ibits,
3135 __u64 trybits, bool cos_incompat)
3137 bool trylock_only = *ibits == 0;
3140 LASSERT(!(*ibits & trybits));
3141 rc = mdt_object_lock_internal(info, o, lh, ibits, trybits,
3143 if (rc && trylock_only) { /* clear error for try ibits lock only */
3144 LASSERT(*ibits == 0);
3151 * Save a lock within request object.
3153 * Keep the lock referenced until whether client ACK or transaction
3154 * commit happens or release the lock immediately depending on input
3155 * parameters. If COS is ON, a write lock is converted to COS lock
3158 * \param info thead info object
3159 * \param h lock handle
3160 * \param mode lock mode
3161 * \param decref force immediate lock releasing
3163 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
3164 enum ldlm_mode mode, int decref)
3168 if (lustre_handle_is_used(h)) {
3169 if (decref || !info->mti_has_trans ||
3170 !(mode & (LCK_PW | LCK_EX))) {
3171 mdt_fid_unlock(h, mode);
3173 struct mdt_device *mdt = info->mti_mdt;
3174 struct ldlm_lock *lock = ldlm_handle2lock(h);
3175 struct ptlrpc_request *req = mdt_info_req(info);
3176 bool cos = mdt_cos_is_enabled(mdt);
3177 bool convert_lock = !cos && mdt_slc_is_enabled(mdt);
3179 LASSERTF(lock != NULL, "no lock for cookie %#llx\n",
3182 /* there is no request if mdt_object_unlock() is called
3183 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
3184 if (likely(req != NULL)) {
3185 LDLM_DEBUG(lock, "save lock request %p reply "
3186 "state %p transno %lld\n", req,
3187 req->rq_reply_state, req->rq_transno);
3189 ldlm_lock_mode_downgrade(lock, LCK_COS);
3192 if (req->rq_export->exp_disconnected)
3193 mdt_fid_unlock(h, mode);
3195 ptlrpc_save_lock(req, h, mode, cos,
3198 mdt_fid_unlock(h, mode);
3200 if (mdt_is_lock_sync(lock)) {
3201 CDEBUG(D_HA, "found sync-lock,"
3202 " async commit started\n");
3203 mdt_device_commit_async(info->mti_env,
3206 LDLM_LOCK_PUT(lock);
3215 * Save cross-MDT lock in uncommitted_slc_locks
3217 * Keep the lock referenced until transaction commit happens or release the lock
3218 * immediately depending on input parameters.
3220 * \param info thead info object
3221 * \param h lock handle
3222 * \param mode lock mode
3223 * \param decref force immediate lock releasing
3225 static void mdt_save_remote_lock(struct mdt_thread_info *info,
3226 struct mdt_object *o, struct lustre_handle *h,
3227 enum ldlm_mode mode, int decref)
3231 if (lustre_handle_is_used(h)) {
3232 struct ldlm_lock *lock = ldlm_handle2lock(h);
3235 (lock->l_policy_data.l_inodebits.bits &
3236 (MDS_INODELOCK_XATTR | MDS_INODELOCK_UPDATE)))
3237 mo_invalidate(info->mti_env, mdt_object_child(o));
3239 if (decref || !info->mti_has_trans ||
3240 !(mode & (LCK_PW | LCK_EX))) {
3241 ldlm_lock_decref_and_cancel(h, mode);
3242 LDLM_LOCK_PUT(lock);
3244 struct ptlrpc_request *req = mdt_info_req(info);
3246 LASSERT(req != NULL);
3247 tgt_save_slc_lock(&info->mti_mdt->mdt_lut, lock,
3249 ldlm_lock_decref(h, mode);
3258 * Unlock mdt object.
3260 * Immeditely release the regular lock and the PDO lock or save the
3261 * lock in request and keep them referenced until client ACK or
3262 * transaction commit.
3264 * \param info thread info object
3265 * \param o mdt object
3266 * \param lh mdt lock handle referencing regular and PDO locks
3267 * \param decref force immediate lock releasing
3269 * XXX o is not used and may be NULL, see hsm_cdt_request_completed().
3271 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
3272 struct mdt_lock_handle *lh, int decref)
3276 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
3277 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
3278 mdt_save_remote_lock(info, o, &lh->mlh_rreg_lh, lh->mlh_rreg_mode,
3284 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
3285 const struct lu_fid *f,
3286 struct mdt_lock_handle *lh,
3289 struct mdt_object *o;
3291 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
3295 rc = mdt_object_lock(info, o, lh, ibits);
3297 mdt_object_put(info->mti_env, o);
3304 void mdt_object_unlock_put(struct mdt_thread_info * info,
3305 struct mdt_object * o,
3306 struct mdt_lock_handle *lh,
3309 mdt_object_unlock(info, o, lh, decref);
3310 mdt_object_put(info->mti_env, o);
3314 * Generic code handling requests that have struct mdt_body passed in:
3316 * - extract mdt_body from request and save it in @info, if present;
3318 * - create lu_object, corresponding to the fid in mdt_body, and save it in
3321 * - if HAS_BODY flag is set for this request type check whether object
3322 * actually exists on storage (lu_object_exists()).
3325 static int mdt_body_unpack(struct mdt_thread_info *info,
3326 enum tgt_handler_flags flags)
3328 const struct mdt_body *body;
3329 struct mdt_object *obj;
3330 const struct lu_env *env;
3331 struct req_capsule *pill;
3335 env = info->mti_env;
3336 pill = info->mti_pill;
3338 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
3342 if (!(body->mbo_valid & OBD_MD_FLID))
3345 if (!fid_is_sane(&body->mbo_fid1)) {
3346 CERROR("Invalid fid: "DFID"\n", PFID(&body->mbo_fid1));
3350 obj = mdt_object_find(env, info->mti_mdt, &body->mbo_fid1);
3352 if ((flags & HAS_BODY) && !mdt_object_exists(obj)) {
3353 mdt_object_put(env, obj);
3356 info->mti_object = obj;
3365 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info,
3366 enum tgt_handler_flags flags)
3368 struct req_capsule *pill = info->mti_pill;
3373 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
3374 rc = mdt_body_unpack(info, flags);
3378 if (rc == 0 && (flags & HAS_REPLY)) {
3380 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
3381 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
3383 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
3384 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
3387 /* Set ACL reply buffer size as LUSTRE_POSIX_ACL_MAX_SIZE_OLD
3388 * by default. If the target object has more ACL entries, then
3389 * enlarge the buffer when necessary. */
3390 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
3391 req_capsule_set_size(pill, &RMF_ACL, RCL_SERVER,
3392 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
3394 mdt_preset_secctx_size(info);
3396 rc = req_capsule_server_pack(pill);
3398 CWARN("%s: cannot pack response: rc = %d\n",
3399 mdt_obd_name(info->mti_mdt), rc);
3404 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
3406 lh->mlh_type = MDT_NUL_LOCK;
3407 lh->mlh_reg_lh.cookie = 0ull;
3408 lh->mlh_reg_mode = LCK_MINMODE;
3409 lh->mlh_pdo_lh.cookie = 0ull;
3410 lh->mlh_pdo_mode = LCK_MINMODE;
3411 lh->mlh_rreg_lh.cookie = 0ull;
3412 lh->mlh_rreg_mode = LCK_MINMODE;
3415 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
3417 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3418 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3422 * Initialize fields of struct mdt_thread_info. Other fields are left in
3423 * uninitialized state, because it's too expensive to zero out whole
3424 * mdt_thread_info (> 1K) on each request arrival.
3426 void mdt_thread_info_init(struct ptlrpc_request *req,
3427 struct mdt_thread_info *info)
3431 info->mti_pill = &req->rq_pill;
3434 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3435 mdt_lock_handle_init(&info->mti_lh[i]);
3437 /* mdt device: it can be NULL while CONNECT */
3438 if (req->rq_export) {
3439 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
3440 info->mti_exp = req->rq_export;
3442 info->mti_mdt = NULL;
3443 info->mti_env = req->rq_svc_thread->t_env;
3444 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
3446 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
3447 info->mti_big_buf = LU_BUF_NULL;
3448 info->mti_body = NULL;
3449 info->mti_object = NULL;
3450 info->mti_dlm_req = NULL;
3451 info->mti_has_trans = 0;
3452 info->mti_cross_ref = 0;
3453 info->mti_opdata = 0;
3454 info->mti_big_lmm_used = 0;
3455 info->mti_big_acl_used = 0;
3456 info->mti_som_valid = 0;
3458 info->mti_spec.no_create = 0;
3459 info->mti_spec.sp_rm_entry = 0;
3460 info->mti_spec.sp_permitted = 0;
3461 info->mti_spec.sp_migrate_close = 0;
3463 info->mti_spec.u.sp_ea.eadata = NULL;
3464 info->mti_spec.u.sp_ea.eadatalen = 0;
3467 void mdt_thread_info_fini(struct mdt_thread_info *info)
3471 if (info->mti_object != NULL) {
3472 mdt_object_put(info->mti_env, info->mti_object);
3473 info->mti_object = NULL;
3476 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3477 mdt_lock_handle_fini(&info->mti_lh[i]);
3478 info->mti_env = NULL;
3479 info->mti_pill = NULL;
3480 info->mti_exp = NULL;
3482 if (unlikely(info->mti_big_buf.lb_buf != NULL))
3483 lu_buf_free(&info->mti_big_buf);
3486 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
3488 struct mdt_thread_info *mti;
3490 mti = mdt_th_info(tsi->tsi_env);
3491 LASSERT(mti != NULL);
3493 mdt_thread_info_init(tgt_ses_req(tsi), mti);
3494 if (tsi->tsi_corpus != NULL) {
3495 mti->mti_object = mdt_obj(tsi->tsi_corpus);
3496 lu_object_get(tsi->tsi_corpus);
3498 mti->mti_body = tsi->tsi_mdt_body;
3499 mti->mti_dlm_req = tsi->tsi_dlm_req;
3504 static int mdt_tgt_connect(struct tgt_session_info *tsi)
3506 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_DELAY_CONDITIONAL) &&
3508 tsi2mdt_info(tsi)->mti_mdt->mdt_seq_site.ss_node_id) {
3509 set_current_state(TASK_UNINTERRUPTIBLE);
3510 schedule_timeout(msecs_to_jiffies(3 * MSEC_PER_SEC));
3513 return tgt_connect(tsi);
3516 static int mdt_intent_glimpse(enum ldlm_intent_flags it_opc,
3517 struct mdt_thread_info *info,
3518 struct ldlm_lock **lockp, __u64 flags)
3520 return mdt_glimpse_enqueue(info, info->mti_mdt->mdt_namespace,
3523 static int mdt_intent_brw(enum ldlm_intent_flags it_opc,
3524 struct mdt_thread_info *info,
3525 struct ldlm_lock **lockp, __u64 flags)
3527 return mdt_brw_enqueue(info, info->mti_mdt->mdt_namespace,
3531 int mdt_intent_lock_replace(struct mdt_thread_info *info,
3532 struct ldlm_lock **lockp,
3533 struct mdt_lock_handle *lh,
3534 __u64 flags, int result)
3536 struct ptlrpc_request *req = mdt_info_req(info);
3537 struct ldlm_lock *lock = *lockp;
3538 struct ldlm_lock *new_lock;
3540 /* If possible resent found a lock, @lh is set to its handle */
3541 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3543 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3544 lh->mlh_reg_lh.cookie = 0;
3548 if (new_lock == NULL && (flags & LDLM_FL_RESENT)) {
3549 /* Lock is pinned by ldlm_handle_enqueue0() as it is
3550 * a resend case, however, it could be already destroyed
3551 * due to client eviction or a raced cancel RPC. */
3552 LDLM_DEBUG_NOLOCK("Invalid lock handle %#llx\n",
3553 lh->mlh_reg_lh.cookie);
3554 lh->mlh_reg_lh.cookie = 0;
3558 LASSERTF(new_lock != NULL,
3559 "lockh %#llx flags %#llx : rc = %d\n",
3560 lh->mlh_reg_lh.cookie, flags, result);
3563 * If we've already given this lock to a client once, then we should
3564 * have no readers or writers. Otherwise, we should have one reader
3565 * _or_ writer ref (which will be zeroed below) before returning the
3568 if (new_lock->l_export == req->rq_export) {
3569 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3571 LASSERT(new_lock->l_export == NULL);
3572 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3577 if (new_lock->l_export == req->rq_export) {
3579 * Already gave this to the client, which means that we
3580 * reconstructed a reply.
3582 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3585 LDLM_LOCK_RELEASE(new_lock);
3586 lh->mlh_reg_lh.cookie = 0;
3587 RETURN(ELDLM_LOCK_REPLACED);
3591 * Fixup the lock to be given to the client.
3593 lock_res_and_lock(new_lock);
3594 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3595 * possible blocking AST. */
3596 while (new_lock->l_readers > 0) {
3597 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3598 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3599 new_lock->l_readers--;
3601 while (new_lock->l_writers > 0) {
3602 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3603 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3604 new_lock->l_writers--;
3607 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3608 new_lock->l_blocking_ast = lock->l_blocking_ast;
3609 new_lock->l_completion_ast = lock->l_completion_ast;
3610 if (ldlm_has_dom(new_lock))
3611 new_lock->l_glimpse_ast = ldlm_server_glimpse_ast;
3612 new_lock->l_remote_handle = lock->l_remote_handle;
3613 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3615 unlock_res_and_lock(new_lock);
3617 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3618 &new_lock->l_remote_handle,
3619 &new_lock->l_exp_hash);
3621 LDLM_LOCK_RELEASE(new_lock);
3622 lh->mlh_reg_lh.cookie = 0;
3624 RETURN(ELDLM_LOCK_REPLACED);
3627 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3628 struct ldlm_lock *new_lock,
3629 struct mdt_lock_handle *lh, __u64 flags)
3631 struct ptlrpc_request *req = mdt_info_req(info);
3632 struct ldlm_request *dlmreq;
3634 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3637 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3639 /* Check if this is a resend case (MSG_RESENT is set on RPC) and a
3640 * lock was found by ldlm_handle_enqueue(); if so @lh must be
3642 if (flags & LDLM_FL_RESENT) {
3643 lh->mlh_reg_lh.cookie = new_lock->l_handle.h_cookie;
3644 lh->mlh_reg_mode = new_lock->l_granted_mode;
3646 LDLM_DEBUG(new_lock, "Restoring lock cookie");
3647 DEBUG_REQ(D_DLMTRACE, req, "restoring lock cookie %#llx",
3648 lh->mlh_reg_lh.cookie);
3653 * If the xid matches, then we know this is a resent request, and allow
3654 * it. (It's probably an OPEN, for which we don't send a lock.
3656 if (req_can_reconstruct(req, NULL))
3660 * This remote handle isn't enqueued, so we never received or processed
3661 * this request. Clear MSG_RESENT, because it can be handled like any
3662 * normal request now.
3664 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3666 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle %#llx",
3667 dlmreq->lock_handle[0].cookie);
3670 static int mdt_intent_getxattr(enum ldlm_intent_flags it_opc,
3671 struct mdt_thread_info *info,
3672 struct ldlm_lock **lockp,
3675 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3676 struct ldlm_reply *ldlm_rep = NULL;
3681 * Initialize lhc->mlh_reg_lh either from a previously granted lock
3682 * (for the resend case) or a new lock. Below we will use it to
3683 * replace the original lock.
3685 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3686 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3687 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
3688 rc = mdt_object_lock(info, info->mti_object, lhc,
3689 MDS_INODELOCK_XATTR);
3694 rc = mdt_getxattr(info);
3696 if (mdt_info_req(info)->rq_repmsg != NULL)
3697 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3699 if (ldlm_rep == NULL ||
3700 OBD_FAIL_CHECK(OBD_FAIL_MDS_XATTR_REP)) {
3701 mdt_object_unlock(info, info->mti_object, lhc, 1);
3705 RETURN(err_serious(-EFAULT));
3708 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3710 /* This is left for interop instead of adding a new interop flag.
3712 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(3, 0, 0, 0)
3713 if (ldlm_rep->lock_policy_res2) {
3714 mdt_object_unlock(info, info->mti_object, lhc, 1);
3715 RETURN(ELDLM_LOCK_ABORTED);
3719 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3723 static int mdt_intent_getattr(enum ldlm_intent_flags it_opc,
3724 struct mdt_thread_info *info,
3725 struct ldlm_lock **lockp,
3728 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3730 struct ldlm_reply *ldlm_rep;
3731 struct mdt_body *reqbody;
3732 struct mdt_body *repbody;
3736 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3739 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3742 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
3743 repbody->mbo_eadatasize = 0;
3744 repbody->mbo_aclsize = 0;
3748 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
3751 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
3755 CERROR("%s: unsupported intent %#x\n",
3756 mdt_obd_name(info->mti_mdt), (unsigned int)it_opc);
3757 GOTO(out_shrink, rc = -EINVAL);
3760 rc = mdt_init_ucred_intent_getattr(info, reqbody);
3762 GOTO(out_shrink, rc);
3764 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3765 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3767 /* Get lock from request for possible resent case. */
3768 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3770 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3771 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3773 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3774 ldlm_rep->lock_policy_res2 = 0;
3775 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3776 ldlm_rep->lock_policy_res2) {
3777 lhc->mlh_reg_lh.cookie = 0ull;
3778 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3781 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3784 mdt_exit_ucred(info);
3786 mdt_client_compatibility(info);
3787 rc2 = mdt_fix_reply(info);
3793 static int mdt_intent_layout(enum ldlm_intent_flags it_opc,
3794 struct mdt_thread_info *info,
3795 struct ldlm_lock **lockp,
3798 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_LAYOUT];
3799 struct md_layout_change layout = { .mlc_opc = MD_LAYOUT_NOP };
3800 struct layout_intent *intent;
3801 struct lu_fid *fid = &info->mti_tmp_fid2;
3802 struct mdt_object *obj = NULL;
3803 int layout_size = 0;
3807 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
3809 intent = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
3813 CDEBUG(D_INFO, DFID "got layout change request from client: "
3814 "opc:%u flags:%#x extent "DEXT"\n",
3815 PFID(fid), intent->li_opc, intent->li_flags,
3816 PEXT(&intent->li_extent));
3818 switch (intent->li_opc) {
3819 case LAYOUT_INTENT_TRUNC:
3820 case LAYOUT_INTENT_WRITE:
3821 layout.mlc_opc = MD_LAYOUT_WRITE;
3822 layout.mlc_intent = intent;
3824 case LAYOUT_INTENT_ACCESS:
3826 case LAYOUT_INTENT_READ:
3827 case LAYOUT_INTENT_GLIMPSE:
3828 case LAYOUT_INTENT_RELEASE:
3829 case LAYOUT_INTENT_RESTORE:
3830 CERROR("%s: Unsupported layout intent opc %d\n",
3831 mdt_obd_name(info->mti_mdt), intent->li_opc);
3835 CERROR("%s: Unknown layout intent opc %d\n",
3836 mdt_obd_name(info->mti_mdt), intent->li_opc);
3843 /* Get lock from request for possible resent case. */
3844 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3846 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
3848 GOTO(out, rc = PTR_ERR(obj));
3851 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
3852 /* if layout is going to be changed don't use the current EA
3853 * size but the maximum one. That buffer will be shrinked
3854 * to the actual size in req_capsule_shrink() before reply.
3856 if (layout.mlc_opc == MD_LAYOUT_WRITE) {
3857 layout_size = info->mti_mdt->mdt_max_mdsize;
3859 layout_size = mdt_attr_get_eabuf_size(info, obj);
3860 if (layout_size < 0)
3861 GOTO(out_obj, rc = layout_size);
3863 if (layout_size > info->mti_mdt->mdt_max_mdsize)
3864 info->mti_mdt->mdt_max_mdsize = layout_size;
3866 CDEBUG(D_INFO, "%s: layout_size %d\n",
3867 mdt_obd_name(info->mti_mdt), layout_size);
3871 * set reply buffer size, so that ldlm_handle_enqueue0()->
3872 * ldlm_lvbo_fill() will fill the reply buffer with lovea.
3874 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
3875 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
3877 rc = req_capsule_server_pack(info->mti_pill);
3882 if (layout.mlc_opc != MD_LAYOUT_NOP) {
3883 struct lu_buf *buf = &layout.mlc_buf;
3886 * mdt_layout_change is a reint operation, when the request
3887 * is resent, layout write shouldn't reprocess it again.
3889 rc = mdt_check_resent(info, mdt_reconstruct_generic, lhc);
3891 GOTO(out_obj, rc = rc < 0 ? rc : 0);
3894 * There is another resent case: the client's job has been
3895 * done by another client, referring lod_declare_layout_change
3896 * -EALREADY case, and it became a operation w/o transaction,
3897 * so we should not do the layout change, otherwise
3898 * mdt_layout_change() will try to cancel the granted server
3899 * CR lock whose remote counterpart is still in hold on the
3900 * client, and a deadlock ensues.
3902 rc = mdt_check_resent_lock(info, obj, lhc);
3908 if (unlikely(req_is_replay(mdt_info_req(info)))) {
3909 buf->lb_buf = req_capsule_client_get(info->mti_pill,
3911 buf->lb_len = req_capsule_get_size(info->mti_pill,
3912 &RMF_EADATA, RCL_CLIENT);
3914 * If it's a replay of layout write intent RPC, the
3915 * client has saved the extended lovea when
3916 * it get reply then.
3918 if (buf->lb_len > 0)
3919 mdt_fix_lov_magic(info, buf->lb_buf);
3922 * Instantiate some layout components, if @buf contains
3923 * lovea, then it's a replay of the layout intent write
3926 rc = mdt_layout_change(info, obj, &layout);
3931 mdt_object_put(info->mti_env, obj);
3933 if (rc == 0 && lustre_handle_is_used(&lhc->mlh_reg_lh))
3934 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3937 lhc->mlh_reg_lh.cookie = 0;
3942 static int mdt_intent_open(enum ldlm_intent_flags it_opc,
3943 struct mdt_thread_info *info,
3944 struct ldlm_lock **lockp,
3947 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3948 struct ldlm_reply *rep = NULL;
3952 static const struct req_format *intent_fmts[REINT_MAX] = {
3953 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3954 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3959 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
3963 /* Get lock from request for possible resent case. */
3964 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3966 rc = mdt_reint_internal(info, lhc, opc);
3968 /* Check whether the reply has been packed successfully. */
3969 if (mdt_info_req(info)->rq_repmsg != NULL)
3970 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3975 RETURN(err_serious(-EFAULT));
3978 /* MDC expects this in any case */
3980 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3982 /* the open lock or the lock for cross-ref object should be
3983 * returned to the client */
3984 if (lustre_handle_is_used(&lhc->mlh_reg_lh) &&
3985 (rc == 0 || rc == -MDT_EREMOTE_OPEN)) {
3986 rep->lock_policy_res2 = 0;
3987 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3991 rep->lock_policy_res2 = clear_serious(rc);
3993 if (rep->lock_policy_res2 == -ENOENT &&
3994 mdt_get_disposition(rep, DISP_LOOKUP_NEG) &&
3995 !mdt_get_disposition(rep, DISP_OPEN_CREATE))
3996 rep->lock_policy_res2 = 0;
3998 lhc->mlh_reg_lh.cookie = 0ull;
3999 if (rc == -ENOTCONN || rc == -ENODEV ||
4000 rc == -EOVERFLOW) { /**< if VBR failure then return error */
4002 * If it is the disconnect error (ENODEV & ENOCONN), the error
4003 * will be returned by rq_status, and client at ptlrpc layer
4004 * will detect this, then disconnect, reconnect the import
4005 * immediately, instead of impacting the following the rpc.
4010 * For other cases, the error will be returned by intent, and client
4011 * will retrieve the result from intent.
4013 RETURN(ELDLM_LOCK_ABORTED);
4016 static int mdt_intent_opc(enum ldlm_intent_flags it_opc,
4017 struct mdt_thread_info *info,
4018 struct ldlm_lock **lockp,
4019 u64 flags /* LDLM_FL_* */)
4021 struct req_capsule *pill = info->mti_pill;
4022 struct ptlrpc_request *req = mdt_info_req(info);
4023 const struct req_format *it_format;
4024 int (*it_handler)(enum ldlm_intent_flags,
4025 struct mdt_thread_info *,
4026 struct ldlm_lock **,
4028 enum tgt_handler_flags it_handler_flags = 0;
4029 struct ldlm_reply *rep;
4035 case IT_OPEN|IT_CREAT:
4037 * OCREAT is not a IS_MUTABLE request since the file may
4038 * already exist. We do the extra check of
4039 * OBD_CONNECT_RDONLY in mdt_reint_open() when we
4040 * really need to create the object.
4042 it_format = &RQF_LDLM_INTENT;
4043 it_handler = &mdt_intent_open;
4047 it_format = &RQF_LDLM_INTENT_GETATTR;
4048 it_handler = &mdt_intent_getattr;
4049 it_handler_flags = HAS_REPLY;
4052 it_format = &RQF_LDLM_INTENT_GETXATTR;
4053 it_handler = &mdt_intent_getxattr;
4054 it_handler_flags = HAS_BODY;
4057 it_format = &RQF_LDLM_INTENT_LAYOUT;
4058 it_handler = &mdt_intent_layout;
4061 it_format = &RQF_LDLM_INTENT;
4062 it_handler = &mdt_intent_glimpse;
4065 it_format = &RQF_LDLM_INTENT;
4066 it_handler = &mdt_intent_brw;
4068 case IT_QUOTA_DQACQ:
4069 case IT_QUOTA_CONN: {
4070 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
4073 RETURN(-EOPNOTSUPP);
4075 if (mdt_rdonly(req->rq_export))
4078 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
4079 /* pass the request to quota master */
4080 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
4081 mdt_info_req(info), lockp,
4086 CERROR("%s: unknown intent code %#x\n",
4087 mdt_obd_name(info->mti_mdt), it_opc);
4091 req_capsule_extend(pill, it_format);
4093 rc = mdt_unpack_req_pack_rep(info, it_handler_flags);
4097 if (it_handler_flags & IS_MUTABLE && mdt_rdonly(req->rq_export))
4100 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_INTENT_DELAY, 10);
4102 /* execute policy */
4103 rc = (*it_handler)(it_opc, info, lockp, flags);
4105 /* Check whether the reply has been packed successfully. */
4106 if (req->rq_repmsg != NULL) {
4107 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
4108 rep->lock_policy_res2 =
4109 ptlrpc_status_hton(rep->lock_policy_res2);
4115 static void mdt_ptlrpc_stats_update(struct ptlrpc_request *req,
4116 enum ldlm_intent_flags it_opc)
4118 struct lprocfs_stats *srv_stats = ptlrpc_req2svc(req)->srv_stats;
4120 /* update stats when IT code is known */
4121 if (srv_stats != NULL)
4122 lprocfs_counter_incr(srv_stats,
4123 PTLRPC_LAST_CNTR + (it_opc == IT_GLIMPSE ?
4124 LDLM_GLIMPSE_ENQUEUE : LDLM_IBITS_ENQUEUE));
4127 static int mdt_intent_policy(const struct lu_env *env,
4128 struct ldlm_namespace *ns,
4129 struct ldlm_lock **lockp,
4131 enum ldlm_mode mode,
4132 __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(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 if (OBD_FAIL_CHECK(OBD_FAIL_QUOTA_INIT))
4793 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
4797 GOTO(class_cleanup, rc);
4799 /* connect to quota master target */
4800 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4801 data->ocd_version = LUSTRE_VERSION_CODE;
4802 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
4805 CERROR("cannot connect to quota master device %s (%d)\n",
4807 GOTO(class_cleanup, rc);
4813 class_manual_cleanup(obd);
4814 mdt->mdt_qmt_dev = NULL;
4815 GOTO(lcfg_cleanup, rc);
4819 class_detach(obd, lcfg);
4821 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
4823 class_put_profile(lprof);
4828 OBD_FREE(qmtname, MAX_OBD_NAME);
4830 OBD_FREE(uuid, UUID_MAX);
4836 /* Shutdown quota master target associated with mdt */
4837 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
4841 if (mdt->mdt_qmt_exp == NULL)
4843 LASSERT(mdt->mdt_qmt_dev != NULL);
4845 /* the qmt automatically shuts down when the mdt disconnects */
4846 obd_disconnect(mdt->mdt_qmt_exp);
4847 mdt->mdt_qmt_exp = NULL;
4848 mdt->mdt_qmt_dev = NULL;
4852 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
4853 * for now. This will be removed along with converting rest of MDT code
4854 * to use tgt_session_info */
4855 static int mdt_tgt_getxattr(struct tgt_session_info *tsi)
4857 struct mdt_thread_info *info = tsi2mdt_info(tsi);
4860 rc = mdt_getxattr(info);
4862 mdt_thread_info_fini(info);
4866 #define OBD_FAIL_OST_READ_NET OBD_FAIL_OST_BRW_NET
4867 #define OBD_FAIL_OST_WRITE_NET OBD_FAIL_OST_BRW_NET
4868 #define OST_BRW_READ OST_READ
4869 #define OST_BRW_WRITE OST_WRITE
4871 static struct tgt_handler mdt_tgt_handlers[] = {
4872 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4873 0, MDS_CONNECT, mdt_tgt_connect,
4874 &RQF_CONNECT, LUSTRE_OBD_VERSION),
4875 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4876 0, MDS_DISCONNECT, tgt_disconnect,
4877 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
4878 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4879 HAS_REPLY, MDS_SET_INFO, mdt_set_info,
4880 &RQF_OBD_SET_INFO, LUSTRE_MDS_VERSION),
4881 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
4882 TGT_MDT_HDL(HAS_REPLY, MDS_GET_ROOT, mdt_get_root),
4883 TGT_MDT_HDL(HAS_BODY, MDS_GETATTR, mdt_getattr),
4884 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_GETATTR_NAME,
4886 TGT_MDT_HDL(HAS_BODY, MDS_GETXATTR, mdt_tgt_getxattr),
4887 TGT_MDT_HDL(HAS_REPLY, MDS_STATFS, mdt_statfs),
4888 TGT_MDT_HDL(IS_MUTABLE, MDS_REINT, mdt_reint),
4889 TGT_MDT_HDL(HAS_BODY, MDS_CLOSE, mdt_close),
4890 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_READPAGE, mdt_readpage),
4891 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_SYNC, mdt_sync),
4892 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
4893 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_PROGRESS,
4895 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_CT_REGISTER,
4896 mdt_hsm_ct_register),
4897 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_CT_UNREGISTER,
4898 mdt_hsm_ct_unregister),
4899 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_STATE_GET,
4901 TGT_MDT_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, MDS_HSM_STATE_SET,
4903 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_ACTION, mdt_hsm_action),
4904 TGT_MDT_HDL(HAS_BODY | HAS_REPLY, MDS_HSM_REQUEST,
4906 TGT_MDT_HDL(HAS_KEY | HAS_BODY | HAS_REPLY | IS_MUTABLE,
4911 static struct tgt_handler mdt_io_ops[] = {
4912 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY, OST_BRW_READ, tgt_brw_read,
4914 TGT_OST_HDL_HP(HAS_BODY | IS_MUTABLE, OST_BRW_WRITE, tgt_brw_write,
4916 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY | IS_MUTABLE,
4917 OST_PUNCH, mdt_punch_hdl,
4919 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_SYNC, mdt_data_sync),
4922 static struct tgt_handler mdt_sec_ctx_ops[] = {
4923 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
4924 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
4925 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
4928 static struct tgt_handler mdt_quota_ops[] = {
4929 TGT_QUOTA_HDL(HAS_REPLY, QUOTA_DQACQ, mdt_quota_dqacq),
4932 static struct tgt_opc_slice mdt_common_slice[] = {
4934 .tos_opc_start = MDS_FIRST_OPC,
4935 .tos_opc_end = MDS_LAST_OPC,
4936 .tos_hs = mdt_tgt_handlers
4939 .tos_opc_start = OBD_FIRST_OPC,
4940 .tos_opc_end = OBD_LAST_OPC,
4941 .tos_hs = tgt_obd_handlers
4944 .tos_opc_start = LDLM_FIRST_OPC,
4945 .tos_opc_end = LDLM_LAST_OPC,
4946 .tos_hs = tgt_dlm_handlers
4949 .tos_opc_start = SEC_FIRST_OPC,
4950 .tos_opc_end = SEC_LAST_OPC,
4951 .tos_hs = mdt_sec_ctx_ops
4954 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
4955 .tos_opc_end = OUT_UPDATE_LAST_OPC,
4956 .tos_hs = tgt_out_handlers
4959 .tos_opc_start = FLD_FIRST_OPC,
4960 .tos_opc_end = FLD_LAST_OPC,
4961 .tos_hs = fld_handlers
4964 .tos_opc_start = SEQ_FIRST_OPC,
4965 .tos_opc_end = SEQ_LAST_OPC,
4966 .tos_hs = seq_handlers
4969 .tos_opc_start = QUOTA_DQACQ,
4970 .tos_opc_end = QUOTA_LAST_OPC,
4971 .tos_hs = mdt_quota_ops
4974 .tos_opc_start = LLOG_FIRST_OPC,
4975 .tos_opc_end = LLOG_LAST_OPC,
4976 .tos_hs = tgt_llog_handlers
4979 .tos_opc_start = LFSCK_FIRST_OPC,
4980 .tos_opc_end = LFSCK_LAST_OPC,
4981 .tos_hs = tgt_lfsck_handlers
4984 .tos_opc_start = OST_FIRST_OPC,
4985 .tos_opc_end = OST_LAST_OPC,
4986 .tos_hs = mdt_io_ops
4993 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4995 struct md_device *next = m->mdt_child;
4996 struct lu_device *d = &m->mdt_lu_dev;
4997 struct obd_device *obd = mdt2obd_dev(m);
4998 struct lfsck_stop stop;
5001 stop.ls_status = LS_PAUSED;
5003 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
5005 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
5006 ping_evictor_stop();
5008 /* Remove the HSM /proc entry so the coordinator cannot be
5009 * restarted by a user while it's shutting down. */
5010 hsm_cdt_procfs_fini(m);
5011 mdt_hsm_cdt_stop(m);
5013 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
5014 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
5016 if (m->mdt_namespace != NULL)
5017 ldlm_namespace_free_prior(m->mdt_namespace, NULL,
5018 d->ld_obd->obd_force);
5020 obd_exports_barrier(obd);
5021 obd_zombie_barrier();
5023 mdt_quota_fini(env, m);
5025 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
5027 /* Calling the cleanup functions in the same order as in the mdt_init0
5032 target_recovery_fini(obd);
5033 upcall_cache_cleanup(m->mdt_identity_cache);
5034 m->mdt_identity_cache = NULL;
5036 mdt_fs_cleanup(env, m);
5038 tgt_fini(env, &m->mdt_lut);
5040 mdt_hsm_cdt_fini(m);
5042 if (m->mdt_los != NULL) {
5043 local_oid_storage_fini(env, m->mdt_los);
5047 if (m->mdt_namespace != NULL) {
5048 ldlm_namespace_free_post(m->mdt_namespace);
5049 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
5052 if (m->mdt_md_root != NULL) {
5053 mdt_object_put(env, m->mdt_md_root);
5054 m->mdt_md_root = NULL;
5057 mdt_seq_fini(env, m);
5059 mdt_fld_fini(env, m);
5064 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5066 LASSERT(atomic_read(&d->ld_ref) == 0);
5068 server_put_mount(mdt_obd_name(m), true);
5073 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
5075 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
5076 struct lu_device_type *ldt, struct lustre_cfg *cfg)
5078 const struct dt_device_param *dt_conf;
5079 struct mdt_thread_info *info;
5080 struct obd_device *obd;
5081 const char *dev = lustre_cfg_string(cfg, 0);
5082 const char *num = lustre_cfg_string(cfg, 2);
5083 struct tg_grants_data *tgd = &m->mdt_lut.lut_tgd;
5084 struct lustre_mount_info *lmi = NULL;
5085 struct lustre_sb_info *lsi;
5087 struct seq_server_site *ss_site;
5088 const char *identity_upcall = "NONE";
5089 struct md_device *next;
5096 lu_device_init(&m->mdt_lu_dev, ldt);
5098 * Environment (env) might be missing mdt_thread_key values at that
5099 * point, if device is allocated when mdt_thread_key is in QUIESCENT
5102 * Usually device allocation path doesn't use module key values, but
5103 * mdt has to do a lot of work here, so allocate key value.
5105 rc = lu_env_refill((struct lu_env *)env);
5109 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5110 LASSERT(info != NULL);
5112 obd = class_name2obd(dev);
5113 LASSERT(obd != NULL);
5115 m->mdt_max_mdsize = MAX_MD_SIZE_OLD;
5116 m->mdt_opts.mo_evict_tgt_nids = 1;
5117 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
5119 lmi = server_get_mount(dev);
5121 CERROR("Cannot get mount info for %s!\n", dev);
5124 lsi = s2lsi(lmi->lmi_sb);
5125 /* CMD is supported only in IAM mode */
5127 node_id = simple_strtol(num, NULL, 10);
5128 obd->u.obt.obt_magic = OBT_MAGIC;
5129 if (lsi->lsi_lmd != NULL &&
5130 lsi->lsi_lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
5131 m->mdt_skip_lfsck = 1;
5134 /* DoM files get IO lock at open by default */
5135 m->mdt_opts.mo_dom_lock = ALWAYS_DOM_LOCK_ON_OPEN;
5136 /* DoM files are read at open and data is packed in the reply */
5137 m->mdt_opts.mo_dom_read_open = 1;
5139 m->mdt_squash.rsi_uid = 0;
5140 m->mdt_squash.rsi_gid = 0;
5141 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
5142 init_rwsem(&m->mdt_squash.rsi_sem);
5143 spin_lock_init(&m->mdt_lock);
5144 m->mdt_enable_remote_dir = 1;
5145 m->mdt_enable_striped_dir = 1;
5146 m->mdt_enable_dir_migration = 1;
5147 m->mdt_enable_remote_dir_gid = 0;
5148 m->mdt_enable_remote_rename = 1;
5150 atomic_set(&m->mdt_mds_mds_conns, 0);
5151 atomic_set(&m->mdt_async_commit_count, 0);
5153 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
5154 m->mdt_lu_dev.ld_obd = obd;
5155 /* Set this lu_device to obd for error handling purposes. */
5156 obd->obd_lu_dev = &m->mdt_lu_dev;
5158 /* init the stack */
5159 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
5161 CERROR("%s: Can't init device stack, rc %d\n",
5162 mdt_obd_name(m), rc);
5167 ss_site = mdt_seq_site(m);
5168 s->ld_seq_site = ss_site;
5171 /* set server index */
5172 ss_site->ss_node_id = node_id;
5174 /* failover is the default
5175 * FIXME: we do not failout mds0/mgs, which may cause some problems.
5176 * assumed whose ss_node_id == 0 XXX
5178 obd->obd_replayable = 1;
5179 /* No connection accepted until configurations will finish */
5180 obd->obd_no_conn = 1;
5182 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
5183 char *str = lustre_cfg_string(cfg, 4);
5184 if (strchr(str, 'n')) {
5185 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
5186 obd->obd_replayable = 0;
5190 rc = mdt_fld_init(env, mdt_obd_name(m), m);
5192 GOTO(err_fini_stack, rc);
5194 rc = mdt_seq_init(env, m);
5196 GOTO(err_fini_fld, rc);
5198 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
5199 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
5200 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
5201 LDLM_NAMESPACE_SERVER,
5202 LDLM_NAMESPACE_GREEDY,
5204 if (m->mdt_namespace == NULL)
5205 GOTO(err_fini_seq, rc = -ENOMEM);
5207 m->mdt_namespace->ns_lvbp = m;
5208 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
5210 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
5211 /* set obd_namespace for compatibility with old code */
5212 obd->obd_namespace = m->mdt_namespace;
5214 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
5215 OBD_FAIL_MDS_ALL_REQUEST_NET,
5216 OBD_FAIL_MDS_ALL_REPLY_NET);
5218 GOTO(err_free_ns, rc);
5220 /* Amount of available space excluded from granting and reserved
5221 * for metadata. It is in percentage and 50% is default value. */
5222 tgd->tgd_reserved_pcnt = 50;
5224 if (ONE_MB_BRW_SIZE < (1U << tgd->tgd_blockbits))
5225 m->mdt_brw_size = 1U << tgd->tgd_blockbits;
5227 m->mdt_brw_size = ONE_MB_BRW_SIZE;
5229 rc = mdt_fs_setup(env, m, obd, lsi);
5233 fid.f_seq = FID_SEQ_LOCAL_NAME;
5236 rc = local_oid_storage_init(env, m->mdt_bottom, &fid, &m->mdt_los);
5238 GOTO(err_fs_cleanup, rc);
5240 rc = mdt_hsm_cdt_init(m);
5242 CERROR("%s: error initializing coordinator, rc %d\n",
5243 mdt_obd_name(m), rc);
5244 GOTO(err_los_fini, rc);
5247 tgt_adapt_sptlrpc_conf(&m->mdt_lut);
5249 next = m->mdt_child;
5250 dt_conf = next->md_ops->mdo_dtconf_get(env, next);
5252 mntopts = dt_conf->ddp_mntopts;
5254 if (mntopts & MNTOPT_USERXATTR)
5255 m->mdt_opts.mo_user_xattr = 1;
5257 m->mdt_opts.mo_user_xattr = 0;
5259 m->mdt_max_ea_size = dt_conf->ddp_max_ea_size;
5261 if (mntopts & MNTOPT_ACL)
5262 m->mdt_opts.mo_acl = 1;
5264 m->mdt_opts.mo_acl = 0;
5266 /* XXX: to support suppgid for ACL, we enable identity_upcall
5267 * by default, otherwise, maybe got unexpected -EACCESS. */
5268 if (m->mdt_opts.mo_acl)
5269 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
5271 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
5273 &mdt_identity_upcall_cache_ops);
5274 if (IS_ERR(m->mdt_identity_cache)) {
5275 rc = PTR_ERR(m->mdt_identity_cache);
5276 m->mdt_identity_cache = NULL;
5277 GOTO(err_free_hsm, rc);
5280 rc = mdt_procfs_init(m, dev);
5282 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
5283 GOTO(err_recovery, rc);
5286 rc = mdt_quota_init(env, m, cfg);
5288 GOTO(err_procfs, rc);
5290 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
5291 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
5292 "mdt_ldlm_client", m->mdt_ldlm_client);
5294 ping_evictor_start();
5296 /* recovery will be started upon mdt_prepare()
5297 * when the whole stack is complete and ready
5298 * to serve the requests */
5300 /* Reduce the initial timeout on an MDS because it doesn't need such
5301 * a long timeout as an OST does. Adaptive timeouts will adjust this
5302 * value appropriately. */
5303 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
5304 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
5310 upcall_cache_cleanup(m->mdt_identity_cache);
5311 m->mdt_identity_cache = NULL;
5313 mdt_hsm_cdt_fini(m);
5315 local_oid_storage_fini(env, m->mdt_los);
5318 mdt_fs_cleanup(env, m);
5320 /* keep recoverable clients */
5322 target_recovery_fini(obd);
5323 obd_exports_barrier(obd);
5324 obd_zombie_barrier();
5325 tgt_fini(env, &m->mdt_lut);
5327 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
5328 obd->obd_namespace = m->mdt_namespace = NULL;
5330 mdt_seq_fini(env, m);
5332 mdt_fld_fini(env, m);
5334 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5337 server_put_mount(dev, true);
5341 /* For interoperability, the left element is old parameter, the right one
5342 * is the new version of the parameter, if some parameter is deprecated,
5343 * the new version should be set as NULL. */
5344 static struct cfg_interop_param mdt_interop_param[] = {
5345 { "mdt.group_upcall", NULL },
5346 { "mdt.quota_type", NULL },
5347 { "mdd.quota_type", NULL },
5348 { "mdt.som", NULL },
5349 { "mdt.rootsquash", "mdt.root_squash" },
5350 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
5354 /* used by MGS to process specific configurations */
5355 static int mdt_process_config(const struct lu_env *env,
5356 struct lu_device *d, struct lustre_cfg *cfg)
5358 struct mdt_device *m = mdt_dev(d);
5359 struct md_device *md_next = m->mdt_child;
5360 struct lu_device *next = md2lu_dev(md_next);
5364 switch (cfg->lcfg_command) {
5366 struct obd_device *obd = d->ld_obd;
5368 /* For interoperability */
5369 struct cfg_interop_param *ptr = NULL;
5370 struct lustre_cfg *old_cfg = NULL;
5373 param = lustre_cfg_string(cfg, 1);
5374 if (param == NULL) {
5375 CERROR("param is empty\n");
5380 ptr = class_find_old_param(param, mdt_interop_param);
5382 if (ptr->new_param == NULL) {
5384 CWARN("For interoperability, skip this %s."
5385 " It is obsolete.\n", ptr->old_param);
5389 CWARN("Found old param %s, changed it to %s.\n",
5390 ptr->old_param, ptr->new_param);
5393 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
5400 rc = class_process_proc_param(PARAM_MDT, obd->obd_vars,
5402 if (rc > 0 || rc == -ENOSYS) {
5403 /* is it an HSM var ? */
5404 rc = class_process_proc_param(PARAM_HSM,
5405 hsm_cdt_get_proc_vars(),
5407 if (rc > 0 || rc == -ENOSYS)
5408 /* we don't understand; pass it on */
5409 rc = next->ld_ops->ldo_process_config(env, next,
5414 OBD_FREE(cfg, lustre_cfg_len(cfg->lcfg_bufcount,
5415 cfg->lcfg_buflens));
5419 /* others are passed further */
5420 rc = next->ld_ops->ldo_process_config(env, next, cfg);
5426 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
5427 const struct lu_object_header *hdr,
5428 struct lu_device *d)
5430 struct mdt_object *mo;
5434 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
5436 struct lu_object *o;
5437 struct lu_object_header *h;
5440 h = &mo->mot_header;
5441 lu_object_header_init(h);
5442 lu_object_init(o, h, d);
5443 lu_object_add_top(h, o);
5444 o->lo_ops = &mdt_obj_ops;
5445 spin_lock_init(&mo->mot_write_lock);
5446 mutex_init(&mo->mot_som_mutex);
5447 mutex_init(&mo->mot_lov_mutex);
5448 init_rwsem(&mo->mot_dom_sem);
5449 init_rwsem(&mo->mot_open_sem);
5450 atomic_set(&mo->mot_open_count, 0);
5456 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
5457 const struct lu_object_conf *unused)
5459 struct mdt_device *d = mdt_dev(o->lo_dev);
5460 struct lu_device *under;
5461 struct lu_object *below;
5465 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
5466 PFID(lu_object_fid(o)));
5468 under = &d->mdt_child->md_lu_dev;
5469 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
5470 if (below != NULL) {
5471 lu_object_add(o, below);
5478 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
5480 struct mdt_object *mo = mdt_obj(o);
5481 struct lu_object_header *h;
5485 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
5486 PFID(lu_object_fid(o)));
5488 LASSERT(atomic_read(&mo->mot_open_count) == 0);
5489 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
5492 lu_object_header_fini(h);
5493 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
5498 static int mdt_object_print(const struct lu_env *env, void *cookie,
5499 lu_printer_t p, const struct lu_object *o)
5501 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
5503 return (*p)(env, cookie,
5504 LUSTRE_MDT_NAME"-object@%p(%s %s, writecount=%d)",
5505 mdto, mdto->mot_lov_created ? "lov_created" : "",
5506 mdto->mot_cache_attr ? "cache_attr" : "",
5507 mdto->mot_write_count);
5510 static int mdt_prepare(const struct lu_env *env,
5511 struct lu_device *pdev,
5512 struct lu_device *cdev)
5514 struct mdt_device *mdt = mdt_dev(cdev);
5515 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
5516 struct obd_device *obd = cdev->ld_obd;
5523 rc = next->ld_ops->ldo_prepare(env, cdev, next);
5527 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
5531 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
5535 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
5536 /* The LFSCK instance is registered just now, so it must be there when
5537 * register the namespace to such instance. */
5538 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
5540 if (mdt->mdt_seq_site.ss_node_id == 0) {
5541 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
5542 &mdt->mdt_md_root_fid);
5547 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
5549 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
5550 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
5551 LASSERT(obd->obd_no_conn);
5552 spin_lock(&obd->obd_dev_lock);
5553 obd->obd_no_conn = 0;
5554 spin_unlock(&obd->obd_dev_lock);
5556 if (obd->obd_recovering == 0)
5557 mdt_postrecov(env, mdt);
5562 const struct lu_device_operations mdt_lu_ops = {
5563 .ldo_object_alloc = mdt_object_alloc,
5564 .ldo_process_config = mdt_process_config,
5565 .ldo_prepare = mdt_prepare,
5568 static const struct lu_object_operations mdt_obj_ops = {
5569 .loo_object_init = mdt_object_init,
5570 .loo_object_free = mdt_object_free,
5571 .loo_object_print = mdt_object_print
5574 static int mdt_obd_set_info_async(const struct lu_env *env,
5575 struct obd_export *exp,
5576 __u32 keylen, void *key,
5577 __u32 vallen, void *val,
5578 struct ptlrpc_request_set *set)
5584 if (KEY_IS(KEY_SPTLRPC_CONF)) {
5585 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp));
5593 * Match client and server connection feature flags.
5595 * Compute the compatibility flags for a connection request based on
5596 * features mutually supported by client and server.
5598 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
5599 * must not be updated here, otherwise a partially initialized value may
5600 * be exposed. After the connection request is successfully processed,
5601 * the top-level MDT connect request handler atomically updates the export
5602 * connect flags from the obd_connect_data::ocd_connect_flags field of the
5603 * reply. \see mdt_connect().
5605 * Before 2.7.50 clients will send a struct obd_connect_data_v1 rather than a
5606 * full struct obd_connect_data. So care must be taken when accessing fields
5607 * that are not present in struct obd_connect_data_v1. See LU-16.
5609 * \param exp the obd_export associated with this client/target pair
5610 * \param mdt the target device for the connection
5611 * \param data stores data for this connect request
5614 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
5615 * \retval -EBADE client and server feature requirements are incompatible
5617 static int mdt_connect_internal(const struct lu_env *env,
5618 struct obd_export *exp,
5619 struct mdt_device *mdt,
5620 struct obd_connect_data *data, bool reconnect)
5622 const char *obd_name = mdt_obd_name(mdt);
5623 LASSERT(data != NULL);
5625 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
5627 if (mdt->mdt_bottom->dd_rdonly &&
5628 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
5629 !(data->ocd_connect_flags & OBD_CONNECT_RDONLY))
5632 if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
5633 data->ocd_connect_flags2 &= MDT_CONNECT_SUPPORTED2;
5635 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
5637 if (!mdt->mdt_opts.mo_acl)
5638 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
5640 if (!mdt->mdt_opts.mo_user_xattr)
5641 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
5643 if (OCD_HAS_FLAG(data, BRW_SIZE)) {
5644 data->ocd_brw_size = min(data->ocd_brw_size,
5646 if (data->ocd_brw_size == 0) {
5647 CERROR("%s: cli %s/%p ocd_connect_flags: %#llx "
5648 "ocd_version: %x ocd_grant: %d ocd_index: %u "
5649 "ocd_brw_size unexpectedly zero, network data "
5650 "corruption? Refusing to connect this client\n",
5651 obd_name, exp->exp_client_uuid.uuid,
5652 exp, data->ocd_connect_flags, data->ocd_version,
5653 data->ocd_grant, data->ocd_index);
5658 if (OCD_HAS_FLAG(data, GRANT_PARAM)) {
5659 struct dt_device_param *ddp = &mdt->mdt_lut.lut_dt_conf;
5661 /* client is reporting its page size, for future use */
5662 exp->exp_target_data.ted_pagebits = data->ocd_grant_blkbits;
5663 data->ocd_grant_blkbits = mdt->mdt_lut.lut_tgd.tgd_blockbits;
5664 /* ddp_inodespace may not be power-of-two value, eg. for ldiskfs
5665 * it's LDISKFS_DIR_REC_LEN(20) = 28. */
5666 data->ocd_grant_inobits = fls(ddp->ddp_inodespace - 1);
5667 /* ocd_grant_tax_kb is in 1K byte blocks */
5668 data->ocd_grant_tax_kb = ddp->ddp_extent_tax >> 10;
5669 data->ocd_grant_max_blks = ddp->ddp_max_extent_blks;
5672 /* Save connect_data we have so far because tgt_grant_connect()
5673 * uses it to calculate grant, and we want to save the client
5674 * version before it is overwritten by LUSTRE_VERSION_CODE. */
5675 exp->exp_connect_data = *data;
5676 if (OCD_HAS_FLAG(data, GRANT))
5677 tgt_grant_connect(env, exp, data, !reconnect);
5679 if (OCD_HAS_FLAG(data, MAXBYTES))
5680 data->ocd_maxbytes = mdt->mdt_lut.lut_dt_conf.ddp_maxbytes;
5682 /* NB: Disregard the rule against updating
5683 * exp_connect_data.ocd_connect_flags in this case, since
5684 * tgt_client_new() needs to know if this is a lightweight
5685 * connection, and it is safe to expose this flag before
5686 * connection processing completes. */
5687 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
5688 spin_lock(&exp->exp_lock);
5689 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
5690 spin_unlock(&exp->exp_lock);
5693 data->ocd_version = LUSTRE_VERSION_CODE;
5695 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
5696 CWARN("%s: MDS requires FID support, but client not\n",
5701 if (OCD_HAS_FLAG(data, PINGLESS)) {
5702 if (ptlrpc_pinger_suppress_pings()) {
5703 spin_lock(&exp->exp_obd->obd_dev_lock);
5704 list_del_init(&exp->exp_obd_chain_timed);
5705 spin_unlock(&exp->exp_obd->obd_dev_lock);
5707 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
5711 data->ocd_max_easize = mdt->mdt_max_ea_size;
5713 /* NB: Disregard the rule against updating
5714 * exp_connect_data.ocd_connect_flags in this case, since
5715 * tgt_client_new() needs to know if this is client supports
5716 * multiple modify RPCs, and it is safe to expose this flag before
5717 * connection processing completes. */
5718 if (data->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS) {
5719 data->ocd_maxmodrpcs = max_mod_rpcs_per_client;
5720 spin_lock(&exp->exp_lock);
5721 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_MULTIMODRPCS;
5722 spin_unlock(&exp->exp_lock);
5725 if (OCD_HAS_FLAG(data, CKSUM)) {
5726 __u32 cksum_types = data->ocd_cksum_types;
5728 /* The client set in ocd_cksum_types the checksum types it
5729 * supports. We have to mask off the algorithms that we don't
5731 data->ocd_cksum_types &=
5732 obd_cksum_types_supported_server(obd_name);
5734 if (unlikely(data->ocd_cksum_types == 0)) {
5735 CERROR("%s: Connect with checksum support but no "
5736 "ocd_cksum_types is set\n",
5737 exp->exp_obd->obd_name);
5741 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
5742 "%x\n", exp->exp_obd->obd_name, obd_export_nid2str(exp),
5743 cksum_types, data->ocd_cksum_types);
5745 /* This client does not support OBD_CONNECT_CKSUM
5746 * fall back to CRC32 */
5747 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
5748 "OBD_CONNECT_CKSUM, CRC32 will be used\n",
5749 exp->exp_obd->obd_name, obd_export_nid2str(exp));
5755 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
5756 struct mdt_thread_info *info,
5757 struct mdt_file_data *mfd)
5759 struct lu_context ses;
5763 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
5768 lu_context_enter(&ses);
5770 mdt_ucred(info)->uc_valid = UCRED_OLD;
5771 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
5773 lu_context_exit(&ses);
5774 lu_context_fini(&ses);
5780 static int mdt_export_cleanup(struct obd_export *exp)
5782 struct list_head closing_list;
5783 struct mdt_export_data *med = &exp->exp_mdt_data;
5784 struct obd_device *obd = exp->exp_obd;
5785 struct mdt_device *mdt;
5786 struct mdt_thread_info *info;
5788 struct mdt_file_data *mfd, *n;
5792 INIT_LIST_HEAD(&closing_list);
5793 spin_lock(&med->med_open_lock);
5794 while (!list_empty(&med->med_open_head)) {
5795 struct list_head *tmp = med->med_open_head.next;
5796 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
5798 /* Remove mfd handle so it can't be found again.
5799 * We are consuming the mfd_list reference here. */
5800 class_handle_unhash(&mfd->mfd_open_handle);
5801 list_move_tail(&mfd->mfd_list, &closing_list);
5803 spin_unlock(&med->med_open_lock);
5804 mdt = mdt_dev(obd->obd_lu_dev);
5805 LASSERT(mdt != NULL);
5807 rc = lu_env_init(&env, LCT_MD_THREAD);
5811 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5812 LASSERT(info != NULL);
5813 memset(info, 0, sizeof *info);
5814 info->mti_env = &env;
5815 info->mti_mdt = mdt;
5816 info->mti_exp = exp;
5818 if (!list_empty(&closing_list)) {
5819 struct md_attr *ma = &info->mti_attr;
5821 /* Close any open files (which may also cause orphan
5823 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
5824 list_del_init(&mfd->mfd_list);
5825 ma->ma_need = ma->ma_valid = 0;
5827 /* This file is being closed due to an eviction, it
5828 * could have been modified and now dirty regarding to
5829 * HSM archive, check this!
5830 * The logic here is to mark a file dirty if there's a
5831 * chance it was dirtied before the client was evicted,
5832 * so that we don't have to wait for a release attempt
5833 * before finding out the file was actually dirty and
5834 * fail the release. Aggressively marking it dirty here
5835 * will cause the policy engine to attempt to
5836 * re-archive it; when rearchiving, we can compare the
5837 * current version to the HSM data_version and make the
5838 * archive request into a noop if it's not actually
5841 if (mfd->mfd_open_flags & MDS_FMODE_WRITE)
5842 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
5844 /* Don't unlink orphan on failover umount, LU-184 */
5845 if (exp->exp_flags & OBD_OPT_FAILOVER) {
5846 ma->ma_valid = MA_FLAGS;
5847 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
5849 mdt_mfd_close(info, mfd);
5852 info->mti_mdt = NULL;
5853 /* cleanup client slot early */
5854 /* Do not erase record for recoverable client. */
5855 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
5856 tgt_client_del(&env, exp);
5862 static inline void mdt_enable_slc(struct mdt_device *mdt)
5864 if (mdt->mdt_lut.lut_sync_lock_cancel == NEVER_SYNC_ON_CANCEL)
5865 mdt->mdt_lut.lut_sync_lock_cancel = BLOCKING_SYNC_ON_CANCEL;
5868 static inline void mdt_disable_slc(struct mdt_device *mdt)
5870 if (mdt->mdt_lut.lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL)
5871 mdt->mdt_lut.lut_sync_lock_cancel = NEVER_SYNC_ON_CANCEL;
5874 static int mdt_obd_disconnect(struct obd_export *exp)
5881 class_export_get(exp);
5883 if (!(exp->exp_flags & OBD_OPT_FORCE))
5884 tgt_grant_sanity_check(exp->exp_obd, __func__);
5886 if ((exp_connect_flags(exp) & OBD_CONNECT_MDS_MDS) &&
5887 !(exp_connect_flags(exp) & OBD_CONNECT_LIGHTWEIGHT)) {
5888 struct mdt_device *mdt = mdt_dev(exp->exp_obd->obd_lu_dev);
5890 if (atomic_dec_and_test(&mdt->mdt_mds_mds_conns))
5891 mdt_disable_slc(mdt);
5894 rc = server_disconnect_export(exp);
5896 CDEBUG(D_IOCTL, "server disconnect error: rc = %d\n", rc);
5898 tgt_grant_discard(exp);
5900 rc = mdt_export_cleanup(exp);
5901 nodemap_del_member(exp);
5902 class_export_put(exp);
5906 /* mds_connect copy */
5907 static int mdt_obd_connect(const struct lu_env *env,
5908 struct obd_export **exp, struct obd_device *obd,
5909 struct obd_uuid *cluuid,
5910 struct obd_connect_data *data,
5913 struct obd_export *lexp;
5914 struct lustre_handle conn = { 0 };
5915 struct mdt_device *mdt;
5917 lnet_nid_t *client_nid = localdata;
5920 LASSERT(env != NULL);
5921 LASSERT(data != NULL);
5923 if (!exp || !obd || !cluuid)
5926 mdt = mdt_dev(obd->obd_lu_dev);
5928 if ((data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
5929 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
5930 atomic_inc(&mdt->mdt_mds_mds_conns);
5931 mdt_enable_slc(mdt);
5935 * first, check whether the stack is ready to handle requests
5936 * XXX: probably not very appropriate method is used now
5937 * at some point we should find a better one
5939 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) &&
5940 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) &&
5941 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
5942 rc = obd_get_info(env, mdt->mdt_child_exp,
5943 sizeof(KEY_OSP_CONNECTED),
5944 KEY_OSP_CONNECTED, NULL, NULL);
5947 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
5950 rc = class_connect(&conn, obd, cluuid);
5954 lexp = class_conn2export(&conn);
5955 LASSERT(lexp != NULL);
5957 rc = nodemap_add_member(*client_nid, lexp);
5958 if (rc != 0 && rc != -EEXIST)
5961 rc = mdt_connect_internal(env, lexp, mdt, data, false);
5963 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
5966 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5967 rc = tgt_client_new(env, lexp);
5969 mdt_export_stats_init(obd, lexp, localdata);
5973 class_disconnect(lexp);
5974 nodemap_del_member(lexp);
5978 /* Because we do not want this export to be evicted by pinger,
5979 * let's not add this export to the timed chain list. */
5980 if (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) {
5981 spin_lock(&lexp->exp_obd->obd_dev_lock);
5982 list_del_init(&lexp->exp_obd_chain_timed);
5983 spin_unlock(&lexp->exp_obd->obd_dev_lock);
5990 static int mdt_obd_reconnect(const struct lu_env *env,
5991 struct obd_export *exp, struct obd_device *obd,
5992 struct obd_uuid *cluuid,
5993 struct obd_connect_data *data,
5996 lnet_nid_t *client_nid = localdata;
6000 if (exp == NULL || obd == NULL || cluuid == NULL)
6003 rc = nodemap_add_member(*client_nid, exp);
6004 if (rc != 0 && rc != -EEXIST)
6007 rc = mdt_connect_internal(env, exp, mdt_dev(obd->obd_lu_dev), data,
6010 mdt_export_stats_init(obd, exp, localdata);
6012 nodemap_del_member(exp);
6017 /* FIXME: Can we avoid using these two interfaces? */
6018 static int mdt_init_export(struct obd_export *exp)
6020 struct mdt_export_data *med = &exp->exp_mdt_data;
6024 INIT_LIST_HEAD(&med->med_open_head);
6025 spin_lock_init(&med->med_open_lock);
6026 spin_lock(&exp->exp_lock);
6027 exp->exp_connecting = 1;
6028 spin_unlock(&exp->exp_lock);
6030 /* self-export doesn't need client data and ldlm initialization */
6031 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
6032 &exp->exp_client_uuid)))
6035 rc = tgt_client_alloc(exp);
6039 rc = ldlm_init_export(exp);
6046 tgt_client_free(exp);
6048 CERROR("%s: Failed to initialize export: rc = %d\n",
6049 exp->exp_obd->obd_name, rc);
6053 static int mdt_destroy_export(struct obd_export *exp)
6057 target_destroy_export(exp);
6058 /* destroy can be called from failed obd_setup, so
6059 * checking uuid is safer than obd_self_export */
6060 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
6061 &exp->exp_client_uuid)))
6064 ldlm_destroy_export(exp);
6065 tgt_client_free(exp);
6067 LASSERT(list_empty(&exp->exp_outstanding_replies));
6068 LASSERT(list_empty(&exp->exp_mdt_data.med_open_head));
6071 * discard grants once we're sure no more
6072 * interaction with the client is possible
6074 tgt_grant_discard(exp);
6075 if (exp_connect_flags(exp) & OBD_CONNECT_GRANT)
6076 exp->exp_obd->u.obt.obt_lut->lut_tgd.tgd_tot_granted_clients--;
6078 if (!(exp->exp_flags & OBD_OPT_FORCE))
6079 tgt_grant_sanity_check(exp->exp_obd, __func__);
6084 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
6085 struct linkea_data *ldata)
6089 LASSERT(ldata->ld_buf->lb_buf != NULL);
6091 if (!mdt_object_exists(mdt_obj))
6094 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6095 ldata->ld_buf, XATTR_NAME_LINK);
6096 if (rc == -ERANGE) {
6097 /* Buf was too small, figure out what we need. */
6098 lu_buf_free(ldata->ld_buf);
6099 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6100 ldata->ld_buf, XATTR_NAME_LINK);
6103 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
6104 if (ldata->ld_buf->lb_buf == NULL)
6106 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6107 ldata->ld_buf, XATTR_NAME_LINK);
6112 return linkea_init_with_rec(ldata);
6116 * Given an MDT object, try to look up the full path to the object.
6117 * Part of the MDT layer implementation of lfs fid2path.
6119 * \param[in] info Per-thread common data shared by MDT level handlers.
6120 * \param[in] obj Object to do path lookup of
6121 * \param[in,out] fp User-provided struct to store path information
6122 * \param[in] root_fid Root FID of current path should reach
6124 * \retval 0 Lookup successful, path information stored in fp
6125 * \retval -EAGAIN Lookup failed, usually because object is being moved
6126 * \retval negative errno if there was a problem
6128 static int mdt_path_current(struct mdt_thread_info *info,
6129 struct mdt_object *obj,
6130 struct getinfo_fid2path *fp,
6131 struct lu_fid *root_fid)
6133 struct mdt_device *mdt = info->mti_mdt;
6134 struct mdt_object *mdt_obj;
6135 struct link_ea_header *leh;
6136 struct link_ea_entry *lee;
6137 struct lu_name *tmpname = &info->mti_name;
6138 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
6139 struct lu_buf *buf = &info->mti_big_buf;
6142 struct linkea_data ldata = { NULL };
6147 /* temp buffer for path element, the buffer will be finally freed
6148 * in mdt_thread_info_fini */
6149 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
6150 if (buf->lb_buf == NULL)
6154 ptr = fp->gf_u.gf_path + fp->gf_pathlen - 1;
6157 *tmpfid = fp->gf_fid = *mdt_object_fid(obj);
6159 while (!lu_fid_eq(root_fid, &fp->gf_fid)) {
6160 struct lu_buf lmv_buf;
6162 if (!lu_fid_eq(root_fid, &mdt->mdt_md_root_fid) &&
6163 lu_fid_eq(&mdt->mdt_md_root_fid, &fp->gf_fid))
6164 GOTO(out, rc = -ENOENT);
6166 if (lu_fid_eq(mdt_object_fid(obj), tmpfid)) {
6168 mdt_object_get(info->mti_env, mdt_obj);
6170 mdt_obj = mdt_object_find(info->mti_env, mdt, tmpfid);
6171 if (IS_ERR(mdt_obj))
6172 GOTO(out, rc = PTR_ERR(mdt_obj));
6175 if (!mdt_object_exists(mdt_obj)) {
6176 mdt_object_put(info->mti_env, mdt_obj);
6177 GOTO(out, rc = -ENOENT);
6180 if (mdt_object_remote(mdt_obj)) {
6181 mdt_object_put(info->mti_env, mdt_obj);
6182 GOTO(remote_out, rc = -EREMOTE);
6185 rc = mdt_links_read(info, mdt_obj, &ldata);
6187 mdt_object_put(info->mti_env, mdt_obj);
6192 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
6193 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
6194 /* If set, use link #linkno for path lookup, otherwise use
6195 link #0. Only do this for the final path element. */
6196 if (first && fp->gf_linkno < leh->leh_reccount) {
6198 for (count = 0; count < fp->gf_linkno; count++) {
6199 lee = (struct link_ea_entry *)
6200 ((char *)lee + reclen);
6201 linkea_entry_unpack(lee, &reclen, tmpname,
6204 if (fp->gf_linkno < leh->leh_reccount - 1)
6205 /* indicate to user there are more links */
6209 lmv_buf.lb_buf = info->mti_xattr_buf;
6210 lmv_buf.lb_len = sizeof(info->mti_xattr_buf);
6211 /* Check if it is slave stripes */
6212 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
6213 &lmv_buf, XATTR_NAME_LMV);
6214 mdt_object_put(info->mti_env, mdt_obj);
6216 union lmv_mds_md *lmm = lmv_buf.lb_buf;
6218 /* For slave stripes, get its master */
6219 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE) {
6220 fp->gf_fid = *tmpfid;
6223 } else if (rc < 0 && rc != -ENODATA) {
6229 /* Pack the name in the end of the buffer */
6230 ptr -= tmpname->ln_namelen;
6231 if (ptr - 1 <= fp->gf_u.gf_path)
6232 GOTO(out, rc = -EOVERFLOW);
6233 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
6236 /* keep the last resolved fid to the client, so the
6237 * client will build the left path on another MDT for
6239 fp->gf_fid = *tmpfid;
6245 ptr++; /* skip leading / */
6246 memmove(fp->gf_u.gf_path, ptr,
6247 fp->gf_u.gf_path + fp->gf_pathlen - ptr);
6254 * Given an MDT object, use mdt_path_current to get the path.
6255 * Essentially a wrapper to retry mdt_path_current a set number of times
6256 * if -EAGAIN is returned (usually because an object is being moved).
6258 * Part of the MDT layer implementation of lfs fid2path.
6260 * \param[in] info Per-thread common data shared by mdt level handlers.
6261 * \param[in] obj Object to do path lookup of
6262 * \param[in,out] fp User-provided struct for arguments and to store path
6265 * \retval 0 Lookup successful, path information stored in fp
6266 * \retval negative errno if there was a problem
6268 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
6269 struct getinfo_fid2path *fp, struct lu_fid *root_fid)
6271 struct mdt_device *mdt = info->mti_mdt;
6276 if (fp->gf_pathlen < 3)
6279 if (root_fid == NULL)
6280 root_fid = &mdt->mdt_md_root_fid;
6282 if (lu_fid_eq(root_fid, mdt_object_fid(obj))) {
6283 fp->gf_u.gf_path[0] = '\0';
6287 /* Retry multiple times in case file is being moved */
6288 while (tries-- && rc == -EAGAIN)
6289 rc = mdt_path_current(info, obj, fp, root_fid);
6295 * Get the full path of the provided FID, as of changelog record recno.
6297 * This checks sanity and looks up object for user provided FID
6298 * before calling the actual path lookup code.
6300 * Part of the MDT layer implementation of lfs fid2path.
6302 * \param[in] info Per-thread common data shared by mdt level handlers.
6303 * \param[in,out] fp User-provided struct for arguments and to store path
6306 * \retval 0 Lookup successful, path information and recno stored in fp
6307 * \retval -ENOENT, object does not exist
6308 * \retval negative errno if there was a problem
6310 static int mdt_fid2path(struct mdt_thread_info *info,
6311 struct lu_fid *root_fid,
6312 struct getinfo_fid2path *fp)
6314 struct mdt_device *mdt = info->mti_mdt;
6315 struct mdt_object *obj;
6319 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
6320 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
6322 if (!fid_is_sane(&fp->gf_fid))
6325 if (!fid_is_namespace_visible(&fp->gf_fid)) {
6326 CDEBUG(D_INFO, "%s: "DFID" is invalid, f_seq should be >= %#llx"
6327 ", or f_oid != 0, or f_ver == 0\n", mdt_obd_name(mdt),
6328 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
6332 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
6335 CDEBUG(D_IOCTL, "cannot find "DFID": rc = %d\n",
6336 PFID(&fp->gf_fid), rc);
6340 if (mdt_object_remote(obj))
6342 else if (!mdt_object_exists(obj))
6348 mdt_object_put(info->mti_env, obj);
6349 CDEBUG(D_IOCTL, "nonlocal object "DFID": rc = %d\n",
6350 PFID(&fp->gf_fid), rc);
6354 rc = mdt_path(info, obj, fp, root_fid);
6356 CDEBUG(D_INFO, "fid "DFID", path %s recno %#llx linkno %u\n",
6357 PFID(&fp->gf_fid), fp->gf_u.gf_path,
6358 fp->gf_recno, fp->gf_linkno);
6360 mdt_object_put(info->mti_env, obj);
6365 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key, int keylen,
6366 void *val, int vallen)
6368 struct getinfo_fid2path *fpout, *fpin;
6369 struct lu_fid *root_fid = NULL;
6372 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
6375 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
6376 lustre_swab_fid2path(fpin);
6378 memcpy(fpout, fpin, sizeof(*fpin));
6379 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
6382 if (keylen >= cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*fpin) +
6383 sizeof(struct lu_fid)) {
6384 /* client sent its root FID, which is normally fileset FID */
6385 root_fid = fpin->gf_u.gf_root_fid;
6386 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
6387 lustre_swab_lu_fid(root_fid);
6389 if (root_fid != NULL && !fid_is_sane(root_fid))
6393 rc = mdt_fid2path(info, root_fid, fpout);
6397 int mdt_get_info(struct tgt_session_info *tsi)
6407 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
6409 CDEBUG(D_IOCTL, "No GETINFO key\n");
6410 RETURN(err_serious(-EFAULT));
6412 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
6415 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
6416 if (vallen == NULL) {
6417 CDEBUG(D_IOCTL, "%s: cannot get RMF_GETINFO_VALLEN buffer\n",
6418 tgt_name(tsi->tsi_tgt));
6419 RETURN(err_serious(-EFAULT));
6422 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
6424 rc = req_capsule_server_pack(tsi->tsi_pill);
6426 RETURN(err_serious(rc));
6428 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
6429 if (valout == NULL) {
6430 CDEBUG(D_IOCTL, "%s: cannot get get-info RPC out buffer\n",
6431 tgt_name(tsi->tsi_tgt));
6432 RETURN(err_serious(-EFAULT));
6435 if (KEY_IS(KEY_FID2PATH)) {
6436 struct mdt_thread_info *info = tsi2mdt_info(tsi);
6438 rc = mdt_rpc_fid2path(info, key, keylen, valout, *vallen);
6439 mdt_thread_info_fini(info);
6446 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
6448 struct obd_ioctl_data *data = karg;
6451 struct mdt_object *obj;
6452 struct mdt_lock_handle *lh;
6456 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
6457 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
6460 fid = (struct lu_fid *)data->ioc_inlbuf1;
6462 if (!fid_is_sane(fid))
6465 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
6467 lh = &mti->mti_lh[MDT_LH_PARENT];
6468 mdt_lock_reg_init(lh, LCK_CR);
6470 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
6472 RETURN(PTR_ERR(obj));
6474 if (mdt_object_remote(obj)) {
6477 * before calling version get the correct MDS should be
6478 * fid, this is error to find remote object here
6480 CERROR("nonlocal object "DFID"\n", PFID(fid));
6481 } else if (!mdt_object_exists(obj)) {
6482 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
6485 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
6486 *(__u64 *)data->ioc_inlbuf2 = version;
6489 mdt_object_unlock_put(mti, obj, lh, 1);
6493 /* ioctls on obd dev */
6494 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
6495 void *karg, void __user *uarg)
6498 struct obd_device *obd = exp->exp_obd;
6499 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
6500 struct dt_device *dt = mdt->mdt_bottom;
6504 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
6505 rc = lu_env_init(&env, LCT_MD_THREAD);
6511 rc = mdt_device_sync(&env, mdt);
6513 case OBD_IOC_SET_READONLY:
6514 rc = dt_sync(&env, dt);
6516 rc = dt_ro(&env, dt);
6518 case OBD_IOC_ABORT_RECOVERY:
6519 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
6520 obd->obd_abort_recovery = 1;
6521 target_stop_recovery_thread(obd);
6524 case OBD_IOC_CHANGELOG_REG:
6525 case OBD_IOC_CHANGELOG_DEREG:
6526 case OBD_IOC_CHANGELOG_CLEAR:
6527 rc = mdt->mdt_child->md_ops->mdo_iocontrol(&env,
6531 case OBD_IOC_START_LFSCK: {
6532 struct md_device *next = mdt->mdt_child;
6533 struct obd_ioctl_data *data = karg;
6534 struct lfsck_start_param lsp;
6536 if (unlikely(data == NULL)) {
6541 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
6542 lsp.lsp_index_valid = 0;
6543 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
6546 case OBD_IOC_STOP_LFSCK: {
6547 struct md_device *next = mdt->mdt_child;
6548 struct obd_ioctl_data *data = karg;
6549 struct lfsck_stop stop;
6551 stop.ls_status = LS_STOPPED;
6552 /* Old lfsck utils may pass NULL @stop. */
6553 if (data->ioc_inlbuf1 == NULL)
6557 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
6559 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
6562 case OBD_IOC_QUERY_LFSCK: {
6563 struct md_device *next = mdt->mdt_child;
6564 struct obd_ioctl_data *data = karg;
6566 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0,
6570 case OBD_IOC_GET_OBJ_VERSION: {
6571 struct mdt_thread_info *mti;
6572 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6573 memset(mti, 0, sizeof *mti);
6574 mti->mti_env = &env;
6578 rc = mdt_ioc_version_get(mti, karg);
6581 case OBD_IOC_CATLOGLIST: {
6582 struct mdt_thread_info *mti;
6584 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6585 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
6586 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
6587 &mti->mti_tmp_fid1);
6592 CERROR("%s: Not supported cmd = %d, rc = %d\n",
6593 mdt_obd_name(mdt), cmd, rc);
6600 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
6602 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
6606 if (!mdt->mdt_skip_lfsck && !mdt->mdt_bottom->dd_rdonly) {
6607 struct lfsck_start_param lsp;
6609 lsp.lsp_start = NULL;
6610 lsp.lsp_index_valid = 0;
6611 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
6612 OBD_IOC_START_LFSCK,
6614 if (rc != 0 && rc != -EALREADY)
6615 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
6616 mdt_obd_name(mdt), rc);
6619 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
6623 static int mdt_obd_postrecov(struct obd_device *obd)
6628 rc = lu_env_init(&env, LCT_MD_THREAD);
6631 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
6636 static struct obd_ops mdt_obd_device_ops = {
6637 .o_owner = THIS_MODULE,
6638 .o_set_info_async = mdt_obd_set_info_async,
6639 .o_connect = mdt_obd_connect,
6640 .o_reconnect = mdt_obd_reconnect,
6641 .o_disconnect = mdt_obd_disconnect,
6642 .o_init_export = mdt_init_export,
6643 .o_destroy_export = mdt_destroy_export,
6644 .o_iocontrol = mdt_iocontrol,
6645 .o_postrecov = mdt_obd_postrecov,
6646 /* Data-on-MDT IO methods */
6647 .o_preprw = mdt_obd_preprw,
6648 .o_commitrw = mdt_obd_commitrw,
6651 static struct lu_device* mdt_device_fini(const struct lu_env *env,
6652 struct lu_device *d)
6654 struct mdt_device *m = mdt_dev(d);
6661 static struct lu_device *mdt_device_free(const struct lu_env *env,
6662 struct lu_device *d)
6664 struct mdt_device *m = mdt_dev(d);
6667 lu_device_fini(&m->mdt_lu_dev);
6673 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
6674 struct lu_device_type *t,
6675 struct lustre_cfg *cfg)
6677 struct lu_device *l;
6678 struct mdt_device *m;
6685 rc = mdt_init0(env, m, t, cfg);
6687 mdt_device_free(env, l);
6692 l = ERR_PTR(-ENOMEM);
6696 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
6697 LU_KEY_INIT(mdt, struct mdt_thread_info);
6699 static void mdt_key_fini(const struct lu_context *ctx,
6700 struct lu_context_key *key, void* data)
6702 struct mdt_thread_info *info = data;
6704 if (info->mti_big_lmm) {
6705 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
6706 info->mti_big_lmm = NULL;
6707 info->mti_big_lmmsize = 0;
6710 if (info->mti_big_acl) {
6711 OBD_FREE_LARGE(info->mti_big_acl, info->mti_big_aclsize);
6712 info->mti_big_acl = NULL;
6713 info->mti_big_aclsize = 0;
6719 /* context key: mdt_thread_key */
6720 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
6722 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
6724 return lu_ucred(info->mti_env);
6727 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
6729 return lu_ucred_check(info->mti_env);
6733 * Enable/disable COS (Commit On Sharing).
6735 * Set/Clear the COS flag in mdt options.
6737 * \param mdt mdt device
6738 * \param val 0 disables COS, other values enable COS
6740 void mdt_enable_cos(struct mdt_device *mdt, bool val)
6745 mdt->mdt_opts.mo_cos = val;
6746 rc = lu_env_init(&env, LCT_LOCAL);
6747 if (unlikely(rc != 0)) {
6748 CWARN("%s: lu_env initialization failed, cannot "
6749 "sync: rc = %d\n", mdt_obd_name(mdt), rc);
6752 mdt_device_sync(&env, mdt);
6757 * Check COS (Commit On Sharing) status.
6759 * Return COS flag status.
6761 * \param mdt mdt device
6763 int mdt_cos_is_enabled(struct mdt_device *mdt)
6765 return mdt->mdt_opts.mo_cos != 0;
6768 static struct lu_device_type_operations mdt_device_type_ops = {
6769 .ldto_device_alloc = mdt_device_alloc,
6770 .ldto_device_free = mdt_device_free,
6771 .ldto_device_fini = mdt_device_fini
6774 static struct lu_device_type mdt_device_type = {
6775 .ldt_tags = LU_DEVICE_MD,
6776 .ldt_name = LUSTRE_MDT_NAME,
6777 .ldt_ops = &mdt_device_type_ops,
6778 .ldt_ctx_tags = LCT_MD_THREAD
6781 static int __init mdt_init(void)
6785 CLASSERT(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") ==
6786 FID_NOBRACE_LEN + 1);
6787 CLASSERT(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") ==
6789 rc = lu_kmem_init(mdt_caches);
6793 rc = mds_mod_init();
6797 rc = class_register_type(&mdt_obd_device_ops, NULL, true, NULL,
6798 LUSTRE_MDT_NAME, &mdt_device_type);
6803 lu_kmem_fini(mdt_caches);
6810 static void __exit mdt_exit(void)
6812 class_unregister_type(LUSTRE_MDT_NAME);
6814 lu_kmem_fini(mdt_caches);
6817 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
6818 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
6819 MODULE_VERSION(LUSTRE_VERSION_STRING);
6820 MODULE_LICENSE("GPL");
6822 module_init(mdt_init);
6823 module_exit(mdt_exit);