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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2010, 2015, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mdt/mdt_handler.c
38 * Lustre Metadata Target (mdt) request handler
40 * Author: Peter Braam <braam@clusterfs.com>
41 * Author: Andreas Dilger <adilger@clusterfs.com>
42 * Author: Phil Schwan <phil@clusterfs.com>
43 * Author: Mike Shaver <shaver@clusterfs.com>
44 * Author: Nikita Danilov <nikita@clusterfs.com>
45 * Author: Huang Hua <huanghua@clusterfs.com>
46 * Author: Yury Umanets <umka@clusterfs.com>
49 #define DEBUG_SUBSYSTEM S_MDS
51 #include <linux/module.h>
53 #include <dt_object.h>
54 #include <lustre_acl.h>
55 #include <lustre_export.h>
56 #include <lustre_ioctl.h>
57 #include <lustre_lfsck.h>
58 #include <lustre_log.h>
59 #include <lustre_net.h>
60 #include <lustre_nodemap.h>
61 #include <lustre_mds.h>
62 #include <lustre_param.h>
63 #include <lustre_quota.h>
64 #include <lustre_swab.h>
66 #include <obd_support.h>
68 #include <llog_swab.h>
70 #include "mdt_internal.h"
73 static unsigned int max_mod_rpcs_per_client = 8;
74 module_param(max_mod_rpcs_per_client, uint, 0644);
75 MODULE_PARM_DESC(max_mod_rpcs_per_client, "maximum number of modify RPCs in flight allowed per client");
77 mdl_mode_t mdt_mdl_lock_modes[] = {
78 [LCK_MINMODE] = MDL_MINMODE,
85 [LCK_GROUP] = MDL_GROUP
88 enum ldlm_mode mdt_dlm_lock_modes[] = {
89 [MDL_MINMODE] = LCK_MINMODE,
96 [MDL_GROUP] = LCK_GROUP
99 static struct mdt_device *mdt_dev(struct lu_device *d);
100 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
102 static const struct lu_object_operations mdt_obj_ops;
104 /* Slab for MDT object allocation */
105 static struct kmem_cache *mdt_object_kmem;
107 /* For HSM restore handles */
108 struct kmem_cache *mdt_hsm_cdt_kmem;
110 /* For HSM request handles */
111 struct kmem_cache *mdt_hsm_car_kmem;
113 static struct lu_kmem_descr mdt_caches[] = {
115 .ckd_cache = &mdt_object_kmem,
116 .ckd_name = "mdt_obj",
117 .ckd_size = sizeof(struct mdt_object)
120 .ckd_cache = &mdt_hsm_cdt_kmem,
121 .ckd_name = "mdt_cdt_restore_handle",
122 .ckd_size = sizeof(struct cdt_restore_handle)
125 .ckd_cache = &mdt_hsm_car_kmem,
126 .ckd_name = "mdt_cdt_agent_req",
127 .ckd_size = sizeof(struct cdt_agent_req)
134 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag)
138 return rep->lock_policy_res1 & op_flag;
141 void mdt_clear_disposition(struct mdt_thread_info *info,
142 struct ldlm_reply *rep, __u64 op_flag)
145 info->mti_opdata &= ~op_flag;
146 tgt_opdata_clear(info->mti_env, op_flag);
149 rep->lock_policy_res1 &= ~op_flag;
152 void mdt_set_disposition(struct mdt_thread_info *info,
153 struct ldlm_reply *rep, __u64 op_flag)
156 info->mti_opdata |= op_flag;
157 tgt_opdata_set(info->mti_env, op_flag);
160 rep->lock_policy_res1 |= op_flag;
163 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm)
165 lh->mlh_pdo_hash = 0;
166 lh->mlh_reg_mode = lm;
167 lh->mlh_rreg_mode = lm;
168 lh->mlh_type = MDT_REG_LOCK;
171 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
172 const struct lu_name *lname)
174 lh->mlh_reg_mode = lock_mode;
175 lh->mlh_pdo_mode = LCK_MINMODE;
176 lh->mlh_rreg_mode = lock_mode;
177 lh->mlh_type = MDT_PDO_LOCK;
179 if (lu_name_is_valid(lname)) {
180 lh->mlh_pdo_hash = full_name_hash(lname->ln_name,
182 /* XXX Workaround for LU-2856
184 * Zero is a valid return value of full_name_hash, but
185 * several users of mlh_pdo_hash assume a non-zero
186 * hash value. We therefore map zero onto an
187 * arbitrary, but consistent value (1) to avoid
188 * problems further down the road. */
189 if (unlikely(lh->mlh_pdo_hash == 0))
190 lh->mlh_pdo_hash = 1;
192 lh->mlh_pdo_hash = 0;
196 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
197 struct mdt_lock_handle *lh)
203 * Any dir access needs couple of locks:
205 * 1) on part of dir we gonna take lookup/modify;
207 * 2) on whole dir to protect it from concurrent splitting and/or to
208 * flush client's cache for readdir().
210 * so, for a given mode and object this routine decides what lock mode
211 * to use for lock #2:
213 * 1) if caller's gonna lookup in dir then we need to protect dir from
214 * being splitted only - LCK_CR
216 * 2) if caller's gonna modify dir then we need to protect dir from
217 * being splitted and to flush cache - LCK_CW
219 * 3) if caller's gonna modify dir and that dir seems ready for
220 * splitting then we need to protect it from any type of access
221 * (lookup/modify/split) - LCK_EX --bzzz
224 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
225 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
228 * Ask underlaying level its opinion about preferable PDO lock mode
229 * having access type passed as regular lock mode:
231 * - MDL_MINMODE means that lower layer does not want to specify lock
234 * - MDL_NL means that no PDO lock should be taken. This is used in some
235 * cases. Say, for non-splittable directories no need to use PDO locks
238 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
239 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
241 if (mode != MDL_MINMODE) {
242 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
245 * Lower layer does not want to specify locking mode. We do it
246 * our selves. No special protection is needed, just flush
247 * client's cache on modification and allow concurrent
250 switch (lh->mlh_reg_mode) {
252 lh->mlh_pdo_mode = LCK_EX;
255 lh->mlh_pdo_mode = LCK_CR;
258 lh->mlh_pdo_mode = LCK_CW;
261 CERROR("Not expected lock type (0x%x)\n",
262 (int)lh->mlh_reg_mode);
267 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
271 static int mdt_lookup_fileset(struct mdt_thread_info *info, const char *fileset,
274 struct mdt_device *mdt = info->mti_mdt;
275 struct lu_name *lname = &info->mti_name;
277 struct mdt_object *parent;
281 LASSERT(!info->mti_cross_ref);
283 OBD_ALLOC(name, NAME_MAX + 1);
286 lname->ln_name = name;
289 * We may want to allow this to mount a completely separate
290 * fileset from the MDT in the future, but keeping it to
291 * ROOT/ only for now avoid potential security issues.
293 *fid = mdt->mdt_md_root_fid;
295 while (rc == 0 && fileset != NULL && *fileset != '\0') {
296 const char *s1 = fileset;
302 while (*s2 != '/' && *s2 != '\0')
310 lname->ln_namelen = s2 - s1;
311 if (lname->ln_namelen > NAME_MAX) {
316 /* reject .. as a path component */
317 if (lname->ln_namelen == 2 &&
318 strncmp(s1, "..", 2) == 0) {
323 strncpy(name, s1, lname->ln_namelen);
324 name[lname->ln_namelen] = '\0';
326 parent = mdt_object_find(info->mti_env, mdt, fid);
327 if (IS_ERR(parent)) {
328 rc = PTR_ERR(parent);
331 /* Only got the fid of this obj by name */
333 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
334 fid, &info->mti_spec);
335 mdt_object_put(info->mti_env, parent);
338 parent = mdt_object_find(info->mti_env, mdt, fid);
340 rc = PTR_ERR(parent);
342 mode = lu_object_attr(&parent->mot_obj);
343 mdt_object_put(info->mti_env, parent);
349 OBD_FREE(name, NAME_MAX + 1);
354 static int mdt_get_root(struct tgt_session_info *tsi)
356 struct mdt_thread_info *info = tsi2mdt_info(tsi);
357 struct mdt_device *mdt = info->mti_mdt;
358 struct mdt_body *repbody;
359 char *fileset = NULL, *buffer = NULL;
361 struct obd_export *exp = info->mti_exp;
362 char *nodemap_fileset;
366 rc = mdt_check_ucred(info);
368 GOTO(out, rc = err_serious(rc));
370 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GET_ROOT_PACK))
371 GOTO(out, rc = err_serious(-ENOMEM));
373 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
374 if (req_capsule_get_size(info->mti_pill, &RMF_NAME, RCL_CLIENT) > 0) {
375 fileset = req_capsule_client_get(info->mti_pill, &RMF_NAME);
377 GOTO(out, rc = err_serious(-EFAULT));
380 nodemap_fileset = nodemap_get_fileset(exp->exp_target_data.ted_nodemap);
381 if (nodemap_fileset && nodemap_fileset[0]) {
383 /* consider fileset from client as a sub-fileset
384 * of the nodemap one */
385 OBD_ALLOC(buffer, PATH_MAX + 1);
387 GOTO(out, rc = err_serious(-ENOMEM));
388 if (snprintf(buffer, PATH_MAX + 1, "%s/%s",
389 nodemap_fileset, fileset) >= PATH_MAX + 1)
390 GOTO(out, rc = err_serious(-EINVAL));
393 /* enforce fileset as specified in the nodemap */
394 fileset = nodemap_fileset;
399 rc = mdt_lookup_fileset(info, fileset, &repbody->mbo_fid1);
401 GOTO(out, rc = err_serious(rc));
403 repbody->mbo_fid1 = mdt->mdt_md_root_fid;
405 repbody->mbo_valid |= OBD_MD_FLID;
409 mdt_thread_info_fini(info);
411 OBD_FREE(buffer, PATH_MAX+1);
415 static int mdt_statfs(struct tgt_session_info *tsi)
417 struct ptlrpc_request *req = tgt_ses_req(tsi);
418 struct mdt_thread_info *info = tsi2mdt_info(tsi);
419 struct md_device *next = info->mti_mdt->mdt_child;
420 struct ptlrpc_service_part *svcpt;
421 struct obd_statfs *osfs;
426 svcpt = req->rq_rqbd->rqbd_svcpt;
428 /* This will trigger a watchdog timeout */
429 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
430 (MDT_SERVICE_WATCHDOG_FACTOR *
431 at_get(&svcpt->scp_at_estimate)) + 1);
433 rc = mdt_check_ucred(info);
435 GOTO(out, rc = err_serious(rc));
437 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
438 GOTO(out, rc = err_serious(-ENOMEM));
440 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
442 GOTO(out, rc = -EPROTO);
444 /** statfs information are cached in the mdt_device */
445 if (cfs_time_before_64(info->mti_mdt->mdt_osfs_age,
446 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS))) {
447 /** statfs data is too old, get up-to-date one */
448 rc = next->md_ops->mdo_statfs(info->mti_env, next, osfs);
451 spin_lock(&info->mti_mdt->mdt_osfs_lock);
452 info->mti_mdt->mdt_osfs = *osfs;
453 info->mti_mdt->mdt_osfs_age = cfs_time_current_64();
454 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
456 /** use cached statfs data */
457 spin_lock(&info->mti_mdt->mdt_osfs_lock);
458 *osfs = info->mti_mdt->mdt_osfs;
459 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
463 mdt_counter_incr(req, LPROC_MDT_STATFS);
465 mdt_thread_info_fini(info);
469 #ifdef CONFIG_FS_POSIX_ACL
471 * Pack ACL data into the reply. UIDs/GIDs are mapped and filtered by nodemap.
473 * \param info thread info object
474 * \param repbody reply to pack ACLs into
475 * \param o mdt object of file to examine
476 * \param nodemap nodemap of client to reply to
478 * \retval -errno error getting or parsing ACL from disk
480 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
481 struct mdt_object *o, struct lu_nodemap *nodemap)
483 const struct lu_env *env = info->mti_env;
484 struct md_object *next = mdt_object_child(o);
485 struct lu_buf *buf = &info->mti_buf;
488 buf->lb_buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
489 buf->lb_len = req_capsule_get_size(info->mti_pill, &RMF_ACL,
491 if (buf->lb_len == 0)
494 rc = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_ACCESS);
496 if (rc == -ENODATA) {
497 repbody->mbo_aclsize = 0;
498 repbody->mbo_valid |= OBD_MD_FLACL;
500 } else if (rc == -EOPNOTSUPP) {
503 CERROR("%s: unable to read "DFID" ACL: rc = %d\n",
504 mdt_obd_name(info->mti_mdt),
505 PFID(mdt_object_fid(o)), rc);
508 rc = nodemap_map_acl(nodemap, buf->lb_buf,
509 rc, NODEMAP_FS_TO_CLIENT);
510 /* if all ACLs mapped out, rc is still >= 0 */
512 CERROR("%s: nodemap_map_acl unable to parse "DFID
513 " ACL: rc = %d\n", mdt_obd_name(info->mti_mdt),
514 PFID(mdt_object_fid(o)), rc);
516 repbody->mbo_aclsize = rc;
517 repbody->mbo_valid |= OBD_MD_FLACL;
525 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
526 const struct lu_attr *attr, const struct lu_fid *fid)
528 struct md_attr *ma = &info->mti_attr;
529 struct obd_export *exp = info->mti_exp;
530 struct lu_nodemap *nodemap = NULL;
532 LASSERT(ma->ma_valid & MA_INODE);
534 if (attr->la_valid & LA_ATIME) {
535 b->mbo_atime = attr->la_atime;
536 b->mbo_valid |= OBD_MD_FLATIME;
538 if (attr->la_valid & LA_MTIME) {
539 b->mbo_mtime = attr->la_mtime;
540 b->mbo_valid |= OBD_MD_FLMTIME;
542 if (attr->la_valid & LA_CTIME) {
543 b->mbo_ctime = attr->la_ctime;
544 b->mbo_valid |= OBD_MD_FLCTIME;
546 if (attr->la_valid & LA_FLAGS) {
547 b->mbo_flags = attr->la_flags;
548 b->mbo_valid |= OBD_MD_FLFLAGS;
550 if (attr->la_valid & LA_NLINK) {
551 b->mbo_nlink = attr->la_nlink;
552 b->mbo_valid |= OBD_MD_FLNLINK;
554 if (attr->la_valid & (LA_UID|LA_GID)) {
555 nodemap = nodemap_get_from_exp(exp);
559 if (attr->la_valid & LA_UID) {
560 b->mbo_uid = nodemap_map_id(nodemap, NODEMAP_UID,
561 NODEMAP_FS_TO_CLIENT,
563 b->mbo_valid |= OBD_MD_FLUID;
565 if (attr->la_valid & LA_GID) {
566 b->mbo_gid = nodemap_map_id(nodemap, NODEMAP_GID,
567 NODEMAP_FS_TO_CLIENT,
569 b->mbo_valid |= OBD_MD_FLGID;
572 b->mbo_mode = attr->la_mode;
573 if (attr->la_valid & LA_MODE)
574 b->mbo_valid |= OBD_MD_FLMODE;
575 if (attr->la_valid & LA_TYPE)
576 b->mbo_valid |= OBD_MD_FLTYPE;
580 b->mbo_valid |= OBD_MD_FLID;
581 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, valid="LPX64"\n",
582 PFID(fid), b->mbo_nlink, b->mbo_mode, b->mbo_valid);
585 if (!(attr->la_valid & LA_TYPE))
588 b->mbo_rdev = attr->la_rdev;
589 b->mbo_size = attr->la_size;
590 b->mbo_blocks = attr->la_blocks;
592 if (!S_ISREG(attr->la_mode)) {
593 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
594 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
595 /* means no objects are allocated on osts. */
596 LASSERT(!(ma->ma_valid & MA_LOV));
597 /* just ignore blocks occupied by extend attributes on MDS */
599 /* if no object is allocated on osts, the size on mds is valid.
601 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
602 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL &&
603 ma->ma_lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) {
604 /* A released file stores its size on MDS. */
605 /* But return 1 block for released file, unless tools like tar
606 * will consider it fully sparse. (LU-3864)
608 if (unlikely(b->mbo_size == 0))
612 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
615 if (fid != NULL && (b->mbo_valid & OBD_MD_FLSIZE))
616 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
617 PFID(fid), (unsigned long long)b->mbo_size);
620 if (!IS_ERR_OR_NULL(nodemap))
621 nodemap_putref(nodemap);
624 static inline int mdt_body_has_lov(const struct lu_attr *la,
625 const struct mdt_body *body)
627 return (S_ISREG(la->la_mode) && (body->mbo_valid & OBD_MD_FLEASIZE)) ||
628 (S_ISDIR(la->la_mode) && (body->mbo_valid & OBD_MD_FLDIREA));
631 void mdt_client_compatibility(struct mdt_thread_info *info)
633 struct mdt_body *body;
634 struct ptlrpc_request *req = mdt_info_req(info);
635 struct obd_export *exp = req->rq_export;
636 struct md_attr *ma = &info->mti_attr;
637 struct lu_attr *la = &ma->ma_attr;
640 if (exp_connect_layout(exp))
641 /* the client can deal with 16-bit lmm_stripe_count */
644 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
646 if (!mdt_body_has_lov(la, body))
649 /* now we have a reply with a lov for a client not compatible with the
650 * layout lock so we have to clean the layout generation number */
651 if (S_ISREG(la->la_mode))
652 ma->ma_lmm->lmm_layout_gen = 0;
656 static int mdt_attr_get_eabuf_size(struct mdt_thread_info *info,
657 struct mdt_object *o)
659 const struct lu_env *env = info->mti_env;
662 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
671 /* Is it a directory? Let's check for the LMV as well */
672 if (S_ISDIR(lu_object_attr(&mdt_object_child(o)->mo_lu))) {
673 rc2 = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
677 rc2 = mo_xattr_get(env, mdt_object_child(o),
679 XATTR_NAME_DEFAULT_LMV);
681 if ((rc2 < 0 && rc2 != -ENODATA) || (rc2 > rc))
689 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
692 const struct lu_env *env = info->mti_env;
696 LASSERT(info->mti_big_lmm_used == 0);
697 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
701 /* big_lmm may need to be grown */
702 if (info->mti_big_lmmsize < rc) {
703 int size = size_roundup_power2(rc);
705 if (info->mti_big_lmmsize > 0) {
706 /* free old buffer */
707 LASSERT(info->mti_big_lmm);
708 OBD_FREE_LARGE(info->mti_big_lmm,
709 info->mti_big_lmmsize);
710 info->mti_big_lmm = NULL;
711 info->mti_big_lmmsize = 0;
714 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
715 if (info->mti_big_lmm == NULL)
717 info->mti_big_lmmsize = size;
719 LASSERT(info->mti_big_lmmsize >= rc);
721 info->mti_buf.lb_buf = info->mti_big_lmm;
722 info->mti_buf.lb_len = info->mti_big_lmmsize;
723 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
728 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
729 struct md_attr *ma, const char *name)
731 struct md_object *next = mdt_object_child(o);
732 struct lu_buf *buf = &info->mti_buf;
735 if (strcmp(name, XATTR_NAME_LOV) == 0) {
736 buf->lb_buf = ma->ma_lmm;
737 buf->lb_len = ma->ma_lmm_size;
738 LASSERT(!(ma->ma_valid & MA_LOV));
739 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
740 buf->lb_buf = ma->ma_lmv;
741 buf->lb_len = ma->ma_lmv_size;
742 LASSERT(!(ma->ma_valid & MA_LMV));
743 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
744 buf->lb_buf = ma->ma_lmv;
745 buf->lb_len = ma->ma_lmv_size;
746 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
751 rc = mo_xattr_get(info->mti_env, next, buf, name);
755 if (strcmp(name, XATTR_NAME_LOV) == 0) {
756 if (info->mti_big_lmm_used)
757 ma->ma_lmm = info->mti_big_lmm;
759 /* NOT return LOV EA with hole to old client. */
760 if (unlikely(le32_to_cpu(ma->ma_lmm->lmm_pattern) &
761 LOV_PATTERN_F_HOLE) &&
762 !(exp_connect_flags(info->mti_exp) &
763 OBD_CONNECT_LFSCK)) {
766 ma->ma_lmm_size = rc;
767 ma->ma_valid |= MA_LOV;
769 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
770 if (info->mti_big_lmm_used)
771 ma->ma_lmv = info->mti_big_lmm;
773 ma->ma_lmv_size = rc;
774 ma->ma_valid |= MA_LMV;
775 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
776 ma->ma_lmv_size = rc;
777 ma->ma_valid |= MA_LMV_DEF;
780 /* Update mdt_max_mdsize so all clients will be aware that */
781 if (info->mti_mdt->mdt_max_mdsize < rc)
782 info->mti_mdt->mdt_max_mdsize = rc;
785 } else if (rc == -ENODATA) {
788 } else if (rc == -ERANGE) {
789 /* Default LMV has fixed size, so it must be able to fit
790 * in the original buffer */
791 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
793 rc = mdt_big_xattr_get(info, o, name);
795 info->mti_big_lmm_used = 1;
803 static int mdt_attr_get_pfid(struct mdt_thread_info *info,
804 struct mdt_object *o, struct lu_fid *pfid)
806 struct lu_buf *buf = &info->mti_buf;
807 struct link_ea_header *leh;
808 struct link_ea_entry *lee;
812 buf->lb_buf = info->mti_big_lmm;
813 buf->lb_len = info->mti_big_lmmsize;
814 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
815 buf, XATTR_NAME_LINK);
816 /* ignore errors, MA_PFID won't be set and it is
817 * up to the caller to treat this as an error */
818 if (rc == -ERANGE || buf->lb_len == 0) {
819 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
820 buf->lb_buf = info->mti_big_lmm;
821 buf->lb_len = info->mti_big_lmmsize;
826 if (rc < sizeof(*leh)) {
827 CERROR("short LinkEA on "DFID": rc = %d\n",
828 PFID(mdt_object_fid(o)), rc);
832 leh = (struct link_ea_header *) buf->lb_buf;
833 lee = (struct link_ea_entry *)(leh + 1);
834 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
835 leh->leh_magic = LINK_EA_MAGIC;
836 leh->leh_reccount = __swab32(leh->leh_reccount);
837 leh->leh_len = __swab64(leh->leh_len);
839 if (leh->leh_magic != LINK_EA_MAGIC)
841 if (leh->leh_reccount == 0)
844 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
845 fid_be_to_cpu(pfid, pfid);
850 int mdt_attr_get_complex(struct mdt_thread_info *info,
851 struct mdt_object *o, struct md_attr *ma)
853 const struct lu_env *env = info->mti_env;
854 struct md_object *next = mdt_object_child(o);
855 struct lu_buf *buf = &info->mti_buf;
856 int need = ma->ma_need;
863 if (mdt_object_exists(o) == 0)
864 GOTO(out, rc = -ENOENT);
865 mode = lu_object_attr(&next->mo_lu);
867 if (need & MA_INODE) {
868 ma->ma_need = MA_INODE;
869 rc = mo_attr_get(env, next, ma);
872 ma->ma_valid |= MA_INODE;
875 if (need & MA_PFID) {
876 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
878 ma->ma_valid |= MA_PFID;
879 /* ignore this error, parent fid is not mandatory */
883 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
884 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
889 if (need & MA_LMV && S_ISDIR(mode)) {
890 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
895 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
896 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
901 if (need & MA_HSM && S_ISREG(mode)) {
902 buf->lb_buf = info->mti_xattr_buf;
903 buf->lb_len = sizeof(info->mti_xattr_buf);
904 CLASSERT(sizeof(struct hsm_attrs) <=
905 sizeof(info->mti_xattr_buf));
906 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
907 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
909 ma->ma_valid |= MA_HSM;
910 else if (rc2 < 0 && rc2 != -ENODATA)
914 #ifdef CONFIG_FS_POSIX_ACL
915 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
916 buf->lb_buf = ma->ma_acl;
917 buf->lb_len = ma->ma_acl_size;
918 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
920 ma->ma_acl_size = rc2;
921 ma->ma_valid |= MA_ACL_DEF;
922 } else if (rc2 == -ENODATA) {
931 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = "LPX64" ma_lmm=%p\n",
932 rc, ma->ma_valid, ma->ma_lmm);
936 static int mdt_getattr_internal(struct mdt_thread_info *info,
937 struct mdt_object *o, int ma_need)
939 struct md_object *next = mdt_object_child(o);
940 const struct mdt_body *reqbody = info->mti_body;
941 struct ptlrpc_request *req = mdt_info_req(info);
942 struct md_attr *ma = &info->mti_attr;
943 struct lu_attr *la = &ma->ma_attr;
944 struct req_capsule *pill = info->mti_pill;
945 const struct lu_env *env = info->mti_env;
946 struct mdt_body *repbody;
947 struct lu_buf *buffer = &info->mti_buf;
948 struct obd_export *exp = info->mti_exp;
953 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
954 RETURN(err_serious(-ENOMEM));
956 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
960 if (mdt_object_remote(o)) {
961 /* This object is located on remote node.*/
962 /* Return -ENOTSUPP for old client */
963 if (!mdt_is_dne_client(req->rq_export))
964 GOTO(out, rc = -ENOTSUPP);
966 repbody->mbo_fid1 = *mdt_object_fid(o);
967 repbody->mbo_valid = OBD_MD_FLID | OBD_MD_MDS;
971 if (reqbody->mbo_eadatasize > 0) {
972 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
973 if (buffer->lb_buf == NULL)
974 GOTO(out, rc = -EPROTO);
975 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD,
978 buffer->lb_buf = NULL;
980 ma_need &= ~(MA_LOV | MA_LMV);
981 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
982 mdt_obd_name(info->mti_mdt),
983 req->rq_export->exp_client_uuid.uuid);
986 /* If it is dir object and client require MEA, then we got MEA */
987 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
988 (reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
989 /* Assumption: MDT_MD size is enough for lmv size. */
990 ma->ma_lmv = buffer->lb_buf;
991 ma->ma_lmv_size = buffer->lb_len;
992 ma->ma_need = MA_INODE;
993 if (ma->ma_lmv_size > 0) {
994 if (reqbody->mbo_valid & OBD_MD_MEA)
995 ma->ma_need |= MA_LMV;
996 else if (reqbody->mbo_valid & OBD_MD_DEFAULT_MEA)
997 ma->ma_need |= MA_LMV_DEF;
1000 ma->ma_lmm = buffer->lb_buf;
1001 ma->ma_lmm_size = buffer->lb_len;
1002 ma->ma_need = MA_INODE | MA_HSM;
1003 if (ma->ma_lmm_size > 0)
1004 ma->ma_need |= MA_LOV;
1007 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
1008 reqbody->mbo_valid & OBD_MD_FLDIREA &&
1009 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
1010 /* get default stripe info for this dir. */
1011 ma->ma_need |= MA_LOV_DEF;
1013 ma->ma_need |= ma_need;
1015 rc = mdt_attr_get_complex(info, o, ma);
1017 CERROR("%s: getattr error for "DFID": rc = %d\n",
1018 mdt_obd_name(info->mti_mdt),
1019 PFID(mdt_object_fid(o)), rc);
1023 /* if file is released, check if a restore is running */
1024 if (ma->ma_valid & MA_HSM) {
1025 repbody->mbo_valid |= OBD_MD_TSTATE;
1026 if ((ma->ma_hsm.mh_flags & HS_RELEASED) &&
1027 mdt_hsm_restore_is_running(info, mdt_object_fid(o)))
1028 repbody->mbo_t_state = MS_RESTORE;
1031 is_root = lu_fid_eq(mdt_object_fid(o), &info->mti_mdt->mdt_md_root_fid);
1033 /* the Lustre protocol supposes to return default striping
1034 * on the user-visible root if explicitly requested */
1035 if ((ma->ma_valid & MA_LOV) == 0 && S_ISDIR(la->la_mode) &&
1036 (ma->ma_need & MA_LOV_DEF && is_root) && ma->ma_need & MA_LOV) {
1037 struct lu_fid rootfid;
1038 struct mdt_object *root;
1039 struct mdt_device *mdt = info->mti_mdt;
1041 rc = dt_root_get(env, mdt->mdt_bottom, &rootfid);
1044 root = mdt_object_find(env, mdt, &rootfid);
1046 RETURN(PTR_ERR(root));
1047 rc = mdt_stripe_get(info, root, ma, XATTR_NAME_LOV);
1048 mdt_object_put(info->mti_env, root);
1050 CERROR("%s: getattr error for "DFID": rc = %d\n",
1051 mdt_obd_name(info->mti_mdt),
1052 PFID(mdt_object_fid(o)), rc);
1057 if (likely(ma->ma_valid & MA_INODE))
1058 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
1062 if (mdt_body_has_lov(la, reqbody)) {
1063 if (ma->ma_valid & MA_LOV) {
1064 LASSERT(ma->ma_lmm_size);
1065 repbody->mbo_eadatasize = ma->ma_lmm_size;
1066 if (S_ISDIR(la->la_mode))
1067 repbody->mbo_valid |= OBD_MD_FLDIREA;
1069 repbody->mbo_valid |= OBD_MD_FLEASIZE;
1070 mdt_dump_lmm(D_INFO, ma->ma_lmm, repbody->mbo_valid);
1072 if (ma->ma_valid & MA_LMV) {
1073 /* Return -ENOTSUPP for old client */
1074 if (!mdt_is_striped_client(req->rq_export))
1077 LASSERT(S_ISDIR(la->la_mode));
1078 mdt_dump_lmv(D_INFO, ma->ma_lmv);
1079 repbody->mbo_eadatasize = ma->ma_lmv_size;
1080 repbody->mbo_valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
1082 if (ma->ma_valid & MA_LMV_DEF) {
1083 /* Return -ENOTSUPP for old client */
1084 if (!mdt_is_striped_client(req->rq_export))
1086 LASSERT(S_ISDIR(la->la_mode));
1087 repbody->mbo_eadatasize = ma->ma_lmv_size;
1088 repbody->mbo_valid |= (OBD_MD_FLDIREA |
1089 OBD_MD_DEFAULT_MEA);
1091 } else if (S_ISLNK(la->la_mode) &&
1092 reqbody->mbo_valid & OBD_MD_LINKNAME) {
1093 buffer->lb_buf = ma->ma_lmm;
1094 /* eadatasize from client includes NULL-terminator, so
1095 * there is no need to read it */
1096 buffer->lb_len = reqbody->mbo_eadatasize - 1;
1097 rc = mo_readlink(env, next, buffer);
1098 if (unlikely(rc <= 0)) {
1099 CERROR("%s: readlink failed for "DFID": rc = %d\n",
1100 mdt_obd_name(info->mti_mdt),
1101 PFID(mdt_object_fid(o)), rc);
1104 int print_limit = min_t(int, PAGE_CACHE_SIZE - 128, rc);
1106 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
1108 repbody->mbo_valid |= OBD_MD_LINKNAME;
1109 /* we need to report back size with NULL-terminator
1110 * because client expects that */
1111 repbody->mbo_eadatasize = rc + 1;
1112 if (repbody->mbo_eadatasize != reqbody->mbo_eadatasize)
1113 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
1114 "on "DFID ", expected %d\n",
1115 mdt_obd_name(info->mti_mdt),
1116 rc, PFID(mdt_object_fid(o)),
1117 reqbody->mbo_eadatasize - 1);
1118 /* NULL terminate */
1119 ((char *)ma->ma_lmm)[rc] = 0;
1121 /* If the total CDEBUG() size is larger than a page, it
1122 * will print a warning to the console, avoid this by
1123 * printing just the last part of the symlink. */
1124 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
1125 print_limit < rc ? "..." : "", print_limit,
1126 (char *)ma->ma_lmm + rc - print_limit, rc);
1131 if (reqbody->mbo_valid & OBD_MD_FLMODEASIZE) {
1132 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
1133 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
1134 CDEBUG(D_INODE, "changing the max MD size to %u\n",
1135 repbody->mbo_max_mdsize);
1138 #ifdef CONFIG_FS_POSIX_ACL
1139 if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
1140 (reqbody->mbo_valid & OBD_MD_FLACL)) {
1141 struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
1142 if (IS_ERR(nodemap))
1143 RETURN(PTR_ERR(nodemap));
1145 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
1146 nodemap_putref(nodemap);
1152 mdt_counter_incr(req, LPROC_MDT_GETATTR);
1157 static int mdt_getattr(struct tgt_session_info *tsi)
1159 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1160 struct mdt_object *obj = info->mti_object;
1161 struct req_capsule *pill = info->mti_pill;
1162 struct mdt_body *reqbody;
1163 struct mdt_body *repbody;
1167 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1169 LASSERT(obj != NULL);
1170 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1172 /* Unlike intent case where we need to pre-fill out buffers early on
1173 * in intent policy for ldlm reasons, here we can have a much better
1174 * guess at EA size by just reading it from disk.
1175 * Exceptions are readdir and (missing) directory striping */
1177 if (reqbody->mbo_valid & OBD_MD_LINKNAME) {
1178 /* No easy way to know how long is the symlink, but it cannot
1179 * be more than PATH_MAX, so we allocate +1 */
1182 /* A special case for fs ROOT: getattr there might fetch
1183 * default EA for entire fs, not just for this dir!
1185 } else if (lu_fid_eq(mdt_object_fid(obj),
1186 &info->mti_mdt->mdt_md_root_fid) &&
1187 (reqbody->mbo_valid & OBD_MD_FLDIREA) &&
1188 (lustre_msg_get_opc(mdt_info_req(info)->rq_reqmsg) ==
1190 /* Should the default strping be bigger, mdt_fix_reply
1191 * will reallocate */
1192 rc = DEF_REP_MD_SIZE;
1194 /* Read the actual EA size from disk */
1195 rc = mdt_attr_get_eabuf_size(info, obj);
1199 GOTO(out, rc = err_serious(rc));
1201 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, rc);
1203 rc = req_capsule_server_pack(pill);
1204 if (unlikely(rc != 0))
1205 GOTO(out, rc = err_serious(rc));
1207 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1208 LASSERT(repbody != NULL);
1209 repbody->mbo_eadatasize = 0;
1210 repbody->mbo_aclsize = 0;
1212 rc = mdt_check_ucred(info);
1214 GOTO(out_shrink, rc);
1216 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1218 rc = mdt_getattr_internal(info, obj, 0);
1221 mdt_client_compatibility(info);
1222 rc2 = mdt_fix_reply(info);
1226 mdt_thread_info_fini(info);
1231 * Exchange MOF_LOV_CREATED flags between two objects after a
1232 * layout swap. No assumption is made on whether o1 or o2 have
1233 * created objects or not.
1235 * \param[in,out] o1 First swap layout object
1236 * \param[in,out] o2 Second swap layout object
1238 static void mdt_swap_lov_flag(struct mdt_object *o1, struct mdt_object *o2)
1242 mutex_lock(&o1->mot_lov_mutex);
1243 mutex_lock(&o2->mot_lov_mutex);
1245 o1_flags = o1->mot_flags;
1246 o1->mot_flags = (o1->mot_flags & ~MOF_LOV_CREATED) |
1247 (o2->mot_flags & MOF_LOV_CREATED);
1249 o2->mot_flags = (o2->mot_flags & ~MOF_LOV_CREATED) |
1250 (o1_flags & MOF_LOV_CREATED);
1252 mutex_unlock(&o2->mot_lov_mutex);
1253 mutex_unlock(&o1->mot_lov_mutex);
1256 static int mdt_swap_layouts(struct tgt_session_info *tsi)
1258 struct mdt_thread_info *info;
1259 struct ptlrpc_request *req = tgt_ses_req(tsi);
1260 struct obd_export *exp = req->rq_export;
1261 struct mdt_object *o1, *o2, *o;
1262 struct mdt_lock_handle *lh1, *lh2;
1263 struct mdc_swap_layouts *msl;
1267 /* client does not support layout lock, so layout swaping
1269 * FIXME: there is a problem for old clients which don't support
1270 * layout lock yet. If those clients have already opened the file
1271 * they won't be notified at all so that old layout may still be
1272 * used to do IO. This can be fixed after file release is landed by
1273 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1274 if (!exp_connect_layout(exp))
1275 RETURN(-EOPNOTSUPP);
1277 info = tsi2mdt_info(tsi);
1279 if (info->mti_dlm_req != NULL)
1280 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
1282 o1 = info->mti_object;
1283 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1284 &info->mti_body->mbo_fid2);
1286 GOTO(out, rc = PTR_ERR(o));
1288 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1289 GOTO(put, rc = -ENOENT);
1291 rc = lu_fid_cmp(&info->mti_body->mbo_fid1, &info->mti_body->mbo_fid2);
1292 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1298 /* permission check. Make sure the calling process having permission
1299 * to write both files. */
1300 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1305 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1310 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1312 GOTO(put, rc = -EPROTO);
1314 lh1 = &info->mti_lh[MDT_LH_NEW];
1315 mdt_lock_reg_init(lh1, LCK_EX);
1316 lh2 = &info->mti_lh[MDT_LH_OLD];
1317 mdt_lock_reg_init(lh2, LCK_EX);
1319 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1320 MDS_INODELOCK_XATTR);
1324 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1325 MDS_INODELOCK_XATTR);
1329 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1330 mdt_object_child(o2), msl->msl_flags);
1334 mdt_swap_lov_flag(o1, o2);
1337 mdt_object_unlock(info, o2, lh2, rc);
1339 mdt_object_unlock(info, o1, lh1, rc);
1341 mdt_object_put(info->mti_env, o);
1343 mdt_thread_info_fini(info);
1347 static int mdt_raw_lookup(struct mdt_thread_info *info,
1348 struct mdt_object *parent,
1349 const struct lu_name *lname,
1350 struct ldlm_reply *ldlm_rep)
1352 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1356 LASSERT(!info->mti_cross_ref);
1358 /* Only got the fid of this obj by name */
1359 fid_zero(child_fid);
1360 rc = mdo_lookup(info->mti_env, mdt_object_child(info->mti_object),
1361 lname, child_fid, &info->mti_spec);
1363 struct mdt_body *repbody;
1365 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1366 repbody->mbo_fid1 = *child_fid;
1367 repbody->mbo_valid = OBD_MD_FLID;
1368 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1369 } else if (rc == -ENOENT) {
1370 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1377 * UPDATE lock should be taken against parent, and be released before exit;
1378 * child_bits lock should be taken against child, and be returned back:
1379 * (1)normal request should release the child lock;
1380 * (2)intent request will grant the lock to client.
1382 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1383 struct mdt_lock_handle *lhc,
1385 struct ldlm_reply *ldlm_rep)
1387 struct ptlrpc_request *req = mdt_info_req(info);
1388 struct mdt_body *reqbody = NULL;
1389 struct mdt_object *parent = info->mti_object;
1390 struct mdt_object *child;
1391 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1392 struct lu_name *lname = NULL;
1393 struct mdt_lock_handle *lhp = NULL;
1394 struct ldlm_lock *lock;
1401 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1402 LASSERT(ergo(is_resent,
1403 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1408 if (info->mti_cross_ref) {
1409 /* Only getattr on the child. Parent is on another node. */
1410 mdt_set_disposition(info, ldlm_rep,
1411 DISP_LOOKUP_EXECD | DISP_LOOKUP_POS);
1413 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1415 PFID(mdt_object_fid(child)), ldlm_rep);
1417 rc = mdt_check_resent_lock(info, child, lhc);
1420 } else if (rc > 0) {
1421 mdt_lock_handle_init(lhc);
1422 mdt_lock_reg_init(lhc, LCK_PR);
1425 * Object's name is on another MDS, no lookup or layout
1426 * lock is needed here but update lock is.
1428 child_bits &= ~(MDS_INODELOCK_LOOKUP |
1429 MDS_INODELOCK_LAYOUT);
1430 child_bits |= MDS_INODELOCK_PERM | MDS_INODELOCK_UPDATE;
1432 rc = mdt_object_lock(info, child, lhc, child_bits);
1437 /* Finally, we can get attr for child. */
1438 if (!mdt_object_exists(child)) {
1439 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
1441 "remote object doesn't exist.");
1442 mdt_object_unlock(info, child, lhc, 1);
1446 rc = mdt_getattr_internal(info, child, 0);
1447 if (unlikely(rc != 0))
1448 mdt_object_unlock(info, child, lhc, 1);
1453 lname = &info->mti_name;
1454 mdt_name_unpack(info->mti_pill, &RMF_NAME, lname, MNF_FIX_ANON);
1456 if (lu_name_is_valid(lname)) {
1457 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", "
1458 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1459 PNAME(lname), ldlm_rep);
1461 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1462 if (unlikely(reqbody == NULL))
1463 RETURN(err_serious(-EPROTO));
1465 *child_fid = reqbody->mbo_fid2;
1467 if (unlikely(!fid_is_sane(child_fid)))
1468 RETURN(err_serious(-EINVAL));
1470 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1472 PFID(mdt_object_fid(parent)),
1473 PFID(&reqbody->mbo_fid2), ldlm_rep);
1476 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1478 if (unlikely(!mdt_object_exists(parent)) && lu_name_is_valid(lname)) {
1479 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1481 "Parent doesn't exist!");
1485 if (mdt_object_remote(parent)) {
1486 CERROR("%s: parent "DFID" is on remote target\n",
1487 mdt_obd_name(info->mti_mdt),
1488 PFID(mdt_object_fid(parent)));
1492 if (lu_name_is_valid(lname)) {
1493 /* Always allow to lookup ".." */
1494 if (unlikely(lname->ln_namelen == 2 &&
1495 lname->ln_name[0] == '.' &&
1496 lname->ln_name[1] == '.'))
1497 info->mti_spec.sp_permitted = 1;
1499 if (info->mti_body->mbo_valid == OBD_MD_FLID) {
1500 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1505 /* step 1: lock parent only if parent is a directory */
1506 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
1507 lhp = &info->mti_lh[MDT_LH_PARENT];
1508 mdt_lock_pdo_init(lhp, LCK_PR, lname);
1509 rc = mdt_object_lock(info, parent, lhp,
1510 MDS_INODELOCK_UPDATE);
1511 if (unlikely(rc != 0))
1515 /* step 2: lookup child's fid by name */
1516 fid_zero(child_fid);
1517 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
1518 child_fid, &info->mti_spec);
1520 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1523 GOTO(out_parent, rc);
1526 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1529 *step 3: find the child object by fid & lock it.
1530 * regardless if it is local or remote.
1532 *Note: LU-3240 (commit 762f2114d282a98ebfa4dbbeea9298a8088ad24e)
1533 * set parent dir fid the same as child fid in getattr by fid case
1534 * we should not lu_object_find() the object again, could lead
1535 * to hung if there is a concurrent unlink destroyed the object.
1537 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
1538 mdt_object_get(info->mti_env, parent);
1541 child = mdt_object_find(info->mti_env, info->mti_mdt,
1545 if (unlikely(IS_ERR(child)))
1546 GOTO(out_parent, rc = PTR_ERR(child));
1548 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout * 2);
1549 if (!mdt_object_exists(child)) {
1550 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1552 "Object doesn't exist!");
1553 GOTO(out_child, rc = -ENOENT);
1556 rc = mdt_check_resent_lock(info, child, lhc);
1558 GOTO(out_child, rc);
1559 } else if (rc > 0) {
1560 mdt_lock_handle_init(lhc);
1561 mdt_lock_reg_init(lhc, LCK_PR);
1564 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1565 mdt_object_exists(child) && !mdt_object_remote(child)) {
1566 struct md_attr *ma = &info->mti_attr;
1569 ma->ma_need = MA_INODE;
1570 rc = mdt_attr_get_complex(info, child, ma);
1571 if (unlikely(rc != 0))
1572 GOTO(out_child, rc);
1574 /* If the file has not been changed for some time, we
1575 * return not only a LOOKUP lock, but also an UPDATE
1576 * lock and this might save us RPC on later STAT. For
1577 * directories, it also let negative dentry cache start
1578 * working for this dir. */
1579 if (ma->ma_valid & MA_INODE &&
1580 ma->ma_attr.la_valid & LA_CTIME &&
1581 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1582 ma->ma_attr.la_ctime < cfs_time_current_sec())
1583 child_bits |= MDS_INODELOCK_UPDATE;
1586 /* layout lock must be granted in a best-effort way
1587 * for IT operations */
1588 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1589 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1590 exp_connect_layout(info->mti_exp) &&
1591 S_ISREG(lu_object_attr(&child->mot_obj)) &&
1592 !mdt_object_remote(child) && ldlm_rep != NULL) {
1593 /* try to grant layout lock for regular file. */
1599 child_bits |= MDS_INODELOCK_LAYOUT;
1600 /* try layout lock, it may fail to be granted due to
1601 * contention at LOOKUP or UPDATE */
1602 if (!mdt_object_lock_try(info, child, lhc,
1604 child_bits &= ~MDS_INODELOCK_LAYOUT;
1605 LASSERT(child_bits != 0);
1606 rc = mdt_object_lock(info, child, lhc,
1612 /* Do not enqueue the UPDATE lock from MDT(cross-MDT),
1613 * client will enqueue the lock to the remote MDT */
1614 if (mdt_object_remote(child))
1615 child_bits &= ~MDS_INODELOCK_UPDATE;
1616 rc = mdt_object_lock(info, child, lhc, child_bits);
1618 if (unlikely(rc != 0))
1619 GOTO(out_child, rc);
1622 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1624 /* finally, we can get attr for child. */
1625 rc = mdt_getattr_internal(info, child, ma_need);
1626 if (unlikely(rc != 0)) {
1627 mdt_object_unlock(info, child, lhc, 1);
1629 /* Debugging code. */
1630 LDLM_DEBUG(lock, "Returning lock to client");
1631 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1632 &lock->l_resource->lr_name),
1633 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1634 PLDLMRES(lock->l_resource),
1635 PFID(mdt_object_fid(child)));
1638 LDLM_LOCK_PUT(lock);
1642 mdt_object_put(info->mti_env, child);
1645 mdt_object_unlock(info, parent, lhp, 1);
1649 /* normal handler: should release the child lock */
1650 static int mdt_getattr_name(struct tgt_session_info *tsi)
1652 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1653 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1654 struct mdt_body *reqbody;
1655 struct mdt_body *repbody;
1659 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1660 LASSERT(reqbody != NULL);
1661 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1662 LASSERT(repbody != NULL);
1664 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1665 repbody->mbo_eadatasize = 0;
1666 repbody->mbo_aclsize = 0;
1668 rc = mdt_init_ucred_intent_getattr(info, reqbody);
1670 GOTO(out_shrink, rc);
1672 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1673 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1674 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1675 lhc->mlh_reg_lh.cookie = 0;
1677 mdt_exit_ucred(info);
1680 mdt_client_compatibility(info);
1681 rc2 = mdt_fix_reply(info);
1684 mdt_thread_info_fini(info);
1688 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1689 void *karg, void __user *uarg);
1691 static int mdt_set_info(struct tgt_session_info *tsi)
1693 struct ptlrpc_request *req = tgt_ses_req(tsi);
1696 int keylen, vallen, rc = 0;
1700 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
1702 DEBUG_REQ(D_HA, req, "no set_info key");
1703 RETURN(err_serious(-EFAULT));
1706 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
1709 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
1711 DEBUG_REQ(D_HA, req, "no set_info val");
1712 RETURN(err_serious(-EFAULT));
1715 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
1718 /* Swab any part of val you need to here */
1719 if (KEY_IS(KEY_READ_ONLY)) {
1720 spin_lock(&req->rq_export->exp_lock);
1722 *exp_connect_flags_ptr(req->rq_export) |=
1725 *exp_connect_flags_ptr(req->rq_export) &=
1726 ~OBD_CONNECT_RDONLY;
1727 spin_unlock(&req->rq_export->exp_lock);
1728 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1729 struct changelog_setinfo *cs = val;
1731 if (vallen != sizeof(*cs)) {
1732 CERROR("%s: bad changelog_clear setinfo size %d\n",
1733 tgt_name(tsi->tsi_tgt), vallen);
1736 if (ptlrpc_req_need_swab(req)) {
1737 __swab64s(&cs->cs_recno);
1738 __swab32s(&cs->cs_id);
1741 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
1743 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
1745 obd_export_evict_by_nid(req->rq_export->exp_obd, val);
1752 static int mdt_readpage(struct tgt_session_info *tsi)
1754 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
1755 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
1756 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1757 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
1758 struct mdt_body *repbody;
1764 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1765 RETURN(err_serious(-ENOMEM));
1767 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
1768 if (repbody == NULL || reqbody == NULL)
1769 RETURN(err_serious(-EFAULT));
1772 * prepare @rdpg before calling lower layers and transfer itself. Here
1773 * reqbody->size contains offset of where to start to read and
1774 * reqbody->nlink contains number bytes to read.
1776 rdpg->rp_hash = reqbody->mbo_size;
1777 if (rdpg->rp_hash != reqbody->mbo_size) {
1778 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1779 rdpg->rp_hash, reqbody->mbo_size);
1783 rdpg->rp_attrs = reqbody->mbo_mode;
1784 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
1785 rdpg->rp_attrs |= LUDA_64BITHASH;
1786 rdpg->rp_count = min_t(unsigned int, reqbody->mbo_nlink,
1787 exp_max_brw_size(tsi->tsi_exp));
1788 rdpg->rp_npages = (rdpg->rp_count + PAGE_CACHE_SIZE - 1) >>
1790 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1791 if (rdpg->rp_pages == NULL)
1794 for (i = 0; i < rdpg->rp_npages; ++i) {
1795 rdpg->rp_pages[i] = alloc_page(GFP_IOFS);
1796 if (rdpg->rp_pages[i] == NULL)
1797 GOTO(free_rdpg, rc = -ENOMEM);
1800 /* call lower layers to fill allocated pages with directory data */
1801 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
1803 GOTO(free_rdpg, rc);
1805 /* send pages to client */
1806 rc = tgt_sendpage(tsi, rdpg, rc);
1811 for (i = 0; i < rdpg->rp_npages; i++)
1812 if (rdpg->rp_pages[i] != NULL)
1813 __free_page(rdpg->rp_pages[i]);
1814 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1816 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1822 static int mdt_fix_attr_ucred(struct mdt_thread_info *info, __u32 op)
1824 struct lu_ucred *uc = mdt_ucred_check(info);
1825 struct lu_attr *attr = &info->mti_attr.ma_attr;
1830 if (op != REINT_SETATTR) {
1831 if ((attr->la_valid & LA_UID) && (attr->la_uid != -1))
1832 attr->la_uid = uc->uc_fsuid;
1833 /* for S_ISGID, inherit gid from his parent, such work will be
1834 * done in cmm/mdd layer, here set all cases as uc->uc_fsgid. */
1835 if ((attr->la_valid & LA_GID) && (attr->la_gid != -1))
1836 attr->la_gid = uc->uc_fsgid;
1842 static int mdt_reint_internal(struct mdt_thread_info *info,
1843 struct mdt_lock_handle *lhc,
1846 struct req_capsule *pill = info->mti_pill;
1847 struct mdt_body *repbody;
1852 rc = mdt_reint_unpack(info, op);
1854 CERROR("Can't unpack reint, rc %d\n", rc);
1855 RETURN(err_serious(rc));
1858 /* for replay (no_create) lmm is not needed, client has it already */
1859 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1860 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1863 /* llog cookies are always 0, the field is kept for compatibility */
1864 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1865 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
1867 rc = req_capsule_server_pack(pill);
1869 CERROR("Can't pack response, rc %d\n", rc);
1870 RETURN(err_serious(rc));
1873 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1874 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1876 repbody->mbo_eadatasize = 0;
1877 repbody->mbo_aclsize = 0;
1880 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1882 /* for replay no cookkie / lmm need, because client have this already */
1883 if (info->mti_spec.no_create)
1884 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1885 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1887 rc = mdt_init_ucred_reint(info);
1889 GOTO(out_shrink, rc);
1891 rc = mdt_fix_attr_ucred(info, op);
1893 GOTO(out_ucred, rc = err_serious(rc));
1895 rc = mdt_check_resent(info, mdt_reconstruct, lhc);
1897 GOTO(out_ucred, rc);
1898 } else if (rc == 1) {
1899 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
1900 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1901 GOTO(out_ucred, rc);
1903 rc = mdt_reint_rec(info, lhc);
1906 mdt_exit_ucred(info);
1908 mdt_client_compatibility(info);
1909 rc2 = mdt_fix_reply(info);
1915 static long mdt_reint_opcode(struct ptlrpc_request *req,
1916 const struct req_format **fmt)
1918 struct mdt_device *mdt;
1919 struct mdt_rec_reint *rec;
1922 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
1924 opc = rec->rr_opcode;
1925 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
1926 if (opc < REINT_MAX && fmt[opc] != NULL)
1927 req_capsule_extend(&req->rq_pill, fmt[opc]);
1929 mdt = mdt_exp2dev(req->rq_export);
1930 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
1931 " rc = %d\n", req->rq_export->exp_obd->obd_name,
1932 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
1933 opc = err_serious(-EFAULT);
1936 opc = err_serious(-EFAULT);
1941 static int mdt_reint(struct tgt_session_info *tsi)
1945 static const struct req_format *reint_fmts[REINT_MAX] = {
1946 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1947 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1948 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1949 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1950 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1951 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1952 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
1953 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
1954 [REINT_MIGRATE] = &RQF_MDS_REINT_RENAME
1959 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
1961 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1963 * No lock possible here from client to pass it to reint code
1966 rc = mdt_reint_internal(info, NULL, opc);
1967 mdt_thread_info_fini(info);
1972 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1976 /* this should sync the whole device */
1977 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1979 struct dt_device *dt = mdt->mdt_bottom;
1983 rc = dt->dd_ops->dt_sync(env, dt);
1987 /* this should sync this object */
1988 static int mdt_object_sync(struct mdt_thread_info *info)
1990 struct md_object *next;
1994 if (!mdt_object_exists(info->mti_object)) {
1995 CWARN("%s: non existing object "DFID": rc = %d\n",
1996 mdt_obd_name(info->mti_mdt),
1997 PFID(mdt_object_fid(info->mti_object)), -ESTALE);
2000 next = mdt_object_child(info->mti_object);
2001 rc = mo_object_sync(info->mti_env, next);
2006 static int mdt_sync(struct tgt_session_info *tsi)
2008 struct ptlrpc_request *req = tgt_ses_req(tsi);
2009 struct req_capsule *pill = tsi->tsi_pill;
2010 struct mdt_body *body;
2015 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
2016 RETURN(err_serious(-ENOMEM));
2018 if (fid_seq(&tsi->tsi_mdt_body->mbo_fid1) == 0) {
2019 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
2021 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2023 /* sync an object */
2024 rc = mdt_object_sync(info);
2026 const struct lu_fid *fid;
2027 struct lu_attr *la = &info->mti_attr.ma_attr;
2029 info->mti_attr.ma_need = MA_INODE;
2030 info->mti_attr.ma_valid = 0;
2031 rc = mdt_attr_get_complex(info, info->mti_object,
2034 body = req_capsule_server_get(pill,
2036 fid = mdt_object_fid(info->mti_object);
2037 mdt_pack_attr2body(info, body, la, fid);
2040 mdt_thread_info_fini(info);
2043 mdt_counter_incr(req, LPROC_MDT_SYNC);
2049 * Handle quota control requests to consult current usage/limit, but also
2050 * to configure quota enforcement
2052 static int mdt_quotactl(struct tgt_session_info *tsi)
2054 struct obd_export *exp = tsi->tsi_exp;
2055 struct req_capsule *pill = tsi->tsi_pill;
2056 struct obd_quotactl *oqctl, *repoqc;
2058 struct mdt_device *mdt = mdt_exp2dev(exp);
2059 struct lu_device *qmt = mdt->mdt_qmt_dev;
2060 struct lu_nodemap *nodemap;
2063 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
2065 RETURN(err_serious(-EPROTO));
2067 rc = req_capsule_server_pack(pill);
2069 RETURN(err_serious(rc));
2071 nodemap = nodemap_get_from_exp(exp);
2072 if (IS_ERR(nodemap))
2073 RETURN(PTR_ERR(nodemap));
2075 switch (oqctl->qc_cmd) {
2076 /* master quotactl */
2079 if (!nodemap_can_setquota(nodemap))
2080 GOTO(out_nodemap, rc = -EPERM);
2084 GOTO(out_nodemap, rc = -EOPNOTSUPP);
2085 /* slave quotactl */
2090 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2091 GOTO(out_nodemap, rc = -EFAULT);
2095 if (oqctl->qc_type == USRQUOTA)
2096 id = nodemap_map_id(nodemap, NODEMAP_UID,
2097 NODEMAP_CLIENT_TO_FS, id);
2098 else if (oqctl->qc_type == GRPQUOTA)
2099 id = nodemap_map_id(nodemap, NODEMAP_UID,
2100 NODEMAP_CLIENT_TO_FS, id);
2102 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
2104 GOTO(out_nodemap, rc = err_serious(-EFAULT));
2106 if (oqctl->qc_id != id)
2107 swap(oqctl->qc_id, id);
2109 switch (oqctl->qc_cmd) {
2115 /* forward quotactl request to QMT */
2116 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
2121 /* slave quotactl */
2122 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
2127 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2128 GOTO(out_nodemap, rc = -EFAULT);
2131 if (oqctl->qc_id != id)
2132 swap(oqctl->qc_id, id);
2139 nodemap_putref(nodemap);
2144 /** clone llog ctxt from child (mdd)
2145 * This allows remote llog (replicator) access.
2146 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2147 * context was originally set up, or we can handle them directly.
2148 * I choose the latter, but that means I need any llog
2149 * contexts set up by child to be accessable by the mdt. So we clone the
2150 * context into our context list here.
2152 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2155 struct md_device *next = mdt->mdt_child;
2156 struct llog_ctxt *ctxt;
2159 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2162 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2163 if (rc || ctxt == NULL) {
2167 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2169 CERROR("Can't set mdt ctxt %d\n", rc);
2174 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2175 struct mdt_device *mdt, int idx)
2177 struct llog_ctxt *ctxt;
2179 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2182 /* Put once for the get we just did, and once for the clone */
2183 llog_ctxt_put(ctxt);
2184 llog_ctxt_put(ctxt);
2189 * sec context handlers
2191 static int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
2193 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2199 * quota request handlers
2201 static int mdt_quota_dqacq(struct tgt_session_info *tsi)
2203 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2204 struct lu_device *qmt = mdt->mdt_qmt_dev;
2209 RETURN(err_serious(-EOPNOTSUPP));
2211 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
2215 struct mdt_object *mdt_object_new(const struct lu_env *env,
2216 struct mdt_device *d,
2217 const struct lu_fid *f)
2219 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2220 struct lu_object *o;
2221 struct mdt_object *m;
2224 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2225 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
2226 if (unlikely(IS_ERR(o)))
2227 m = (struct mdt_object *)o;
2233 struct mdt_object *mdt_object_find(const struct lu_env *env,
2234 struct mdt_device *d,
2235 const struct lu_fid *f)
2237 struct lu_object *o;
2238 struct mdt_object *m;
2241 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2242 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
2243 if (unlikely(IS_ERR(o)))
2244 m = (struct mdt_object *)o;
2252 * Asyncronous commit for mdt device.
2254 * Pass asynchonous commit call down the MDS stack.
2256 * \param env environment
2257 * \param mdt the mdt device
2259 static void mdt_device_commit_async(const struct lu_env *env,
2260 struct mdt_device *mdt)
2262 struct dt_device *dt = mdt->mdt_bottom;
2266 rc = dt->dd_ops->dt_commit_async(env, dt);
2267 if (unlikely(rc != 0))
2268 CWARN("%s: async commit start failed: rc = %d\n",
2269 mdt_obd_name(mdt), rc);
2270 atomic_inc(&mdt->mdt_async_commit_count);
2275 * Mark the lock as "synchonous".
2277 * Mark the lock to deffer transaction commit to the unlock time.
2279 * \param lock the lock to mark as "synchonous"
2281 * \see mdt_is_lock_sync
2282 * \see mdt_save_lock
2284 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2286 lock->l_ast_data = (void*)1;
2290 * Check whehter the lock "synchonous" or not.
2292 * \param lock the lock to check
2293 * \retval 1 the lock is "synchonous"
2294 * \retval 0 the lock isn't "synchronous"
2296 * \see mdt_set_lock_sync
2297 * \see mdt_save_lock
2299 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2301 return lock->l_ast_data != NULL;
2305 * Blocking AST for mdt locks.
2307 * Starts transaction commit if in case of COS lock conflict or
2308 * deffers such a commit to the mdt_save_lock.
2310 * \param lock the lock which blocks a request or cancelling lock
2311 * \param desc unused
2312 * \param data unused
2313 * \param flag indicates whether this cancelling or blocking callback
2315 * \see ldlm_blocking_ast_nocheck
2317 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2318 void *data, int flag)
2320 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2321 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2325 if (flag == LDLM_CB_CANCELING)
2328 lock_res_and_lock(lock);
2329 if (lock->l_blocking_ast != mdt_blocking_ast) {
2330 unlock_res_and_lock(lock);
2333 if (lock->l_req_mode & (LCK_PW | LCK_EX) &&
2334 lock->l_blocking_lock != NULL) {
2335 if (mdt_cos_is_enabled(mdt) &&
2336 lock->l_client_cookie !=
2337 lock->l_blocking_lock->l_client_cookie)
2338 mdt_set_lock_sync(lock);
2339 else if (mdt_slc_is_enabled(mdt) &&
2340 ldlm_is_cos_incompat(lock->l_blocking_lock))
2341 mdt_set_lock_sync(lock);
2343 rc = ldlm_blocking_ast_nocheck(lock);
2345 /* There is no lock conflict if l_blocking_lock == NULL,
2346 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2347 * when the last reference to a local lock was released */
2348 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2351 rc = lu_env_init(&env, LCT_LOCAL);
2352 if (unlikely(rc != 0))
2353 CWARN("%s: lu_env initialization failed, cannot "
2354 "start asynchronous commit: rc = %d\n",
2357 mdt_device_commit_async(&env, mdt);
2364 * Blocking AST for cross-MDT lock
2366 * Discard lock from uncommitted_slc_locks and cancel it.
2368 * \param lock the lock which blocks a request or cancelling lock
2369 * \param desc unused
2370 * \param data unused
2371 * \param flag indicates whether this cancelling or blocking callback
2372 * \retval 0 on success
2373 * \retval negative number on error
2375 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2376 void *data, int flag)
2378 struct lustre_handle lockh;
2383 case LDLM_CB_BLOCKING:
2384 ldlm_lock2handle(lock, &lockh);
2385 rc = ldlm_cli_cancel(&lockh,
2386 ldlm_is_atomic_cb(lock) ? 0 : LCF_ASYNC);
2388 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2392 case LDLM_CB_CANCELING:
2393 LDLM_DEBUG(lock, "Revoke remote lock");
2394 /* discard slc lock here so that it can be cleaned anytime,
2395 * especially for cleanup_resource() */
2396 tgt_discard_slc_lock(lock);
2405 int mdt_check_resent_lock(struct mdt_thread_info *info,
2406 struct mdt_object *mo,
2407 struct mdt_lock_handle *lhc)
2409 /* the lock might already be gotten in ldlm_handle_enqueue() */
2410 if (unlikely(lustre_handle_is_used(&lhc->mlh_reg_lh))) {
2411 struct ptlrpc_request *req = mdt_info_req(info);
2412 struct ldlm_lock *lock;
2414 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
2415 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
2417 /* Lock is pinned by ldlm_handle_enqueue0() as it is
2418 * a resend case, however, it could be already destroyed
2419 * due to client eviction or a raced cancel RPC. */
2420 LDLM_DEBUG_NOLOCK("Invalid lock handle "LPX64,
2421 lhc->mlh_reg_lh.cookie);
2425 if (!fid_res_name_eq(mdt_object_fid(mo),
2426 &lock->l_resource->lr_name)) {
2427 CWARN("%s: Although resent, but still not "
2428 "get child lock:"DFID"\n",
2429 info->mti_exp->exp_obd->obd_name,
2430 PFID(mdt_object_fid(mo)));
2431 LDLM_LOCK_PUT(lock);
2434 LDLM_LOCK_PUT(lock);
2440 int mdt_remote_object_lock(struct mdt_thread_info *mti, struct mdt_object *o,
2441 const struct lu_fid *fid, struct lustre_handle *lh,
2442 enum ldlm_mode mode, __u64 ibits, bool nonblock)
2444 struct ldlm_enqueue_info *einfo = &mti->mti_einfo;
2445 union ldlm_policy_data *policy = &mti->mti_policy;
2446 struct ldlm_res_id *res_id = &mti->mti_res_id;
2450 LASSERT(mdt_object_remote(o));
2452 fid_build_reg_res_name(fid, res_id);
2454 memset(einfo, 0, sizeof(*einfo));
2455 einfo->ei_type = LDLM_IBITS;
2456 einfo->ei_mode = mode;
2457 einfo->ei_cb_bl = mdt_remote_blocking_ast;
2458 einfo->ei_cb_cp = ldlm_completion_ast;
2459 einfo->ei_enq_slave = 0;
2460 einfo->ei_res_id = res_id;
2462 einfo->ei_nonblock = 1;
2464 memset(policy, 0, sizeof(*policy));
2465 policy->l_inodebits.bits = ibits;
2467 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
2472 static int mdt_object_local_lock(struct mdt_thread_info *info,
2473 struct mdt_object *o,
2474 struct mdt_lock_handle *lh, __u64 ibits,
2475 bool nonblock, bool cos_incompat)
2477 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2478 union ldlm_policy_data *policy = &info->mti_policy;
2479 struct ldlm_res_id *res_id = &info->mti_res_id;
2484 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2485 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2486 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2487 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2490 LASSERT(lh->mlh_reg_mode == LCK_PW ||
2491 lh->mlh_reg_mode == LCK_EX);
2492 dlmflags |= LDLM_FL_COS_INCOMPAT;
2493 } else if (mdt_cos_is_enabled(info->mti_mdt)) {
2494 dlmflags |= LDLM_FL_COS_ENABLED;
2497 /* Only enqueue LOOKUP lock for remote object */
2498 if (mdt_object_remote(o))
2499 LASSERT(ibits == MDS_INODELOCK_LOOKUP);
2501 if (lh->mlh_type == MDT_PDO_LOCK) {
2502 /* check for exists after object is locked */
2503 if (mdt_object_exists(o) == 0) {
2504 /* Non-existent object shouldn't have PDO lock */
2507 /* Non-dir object shouldn't have PDO lock */
2508 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
2513 memset(policy, 0, sizeof(*policy));
2514 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2516 dlmflags |= LDLM_FL_ATOMIC_CB;
2518 dlmflags |= LDLM_FL_BLOCK_NOWAIT;
2521 * Take PDO lock on whole directory and build correct @res_id for lock
2522 * on part of directory.
2524 if (lh->mlh_pdo_hash != 0) {
2525 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2526 mdt_lock_pdo_mode(info, o, lh);
2527 if (lh->mlh_pdo_mode != LCK_NL) {
2529 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2530 * is never going to be sent to client and we do not
2531 * want it slowed down due to possible cancels.
2533 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2534 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2535 policy, res_id, dlmflags,
2536 info->mti_exp == NULL ? NULL :
2537 &info->mti_exp->exp_handle.h_cookie);
2538 if (unlikely(rc != 0))
2539 GOTO(out_unlock, rc);
2543 * Finish res_id initializing by name hash marking part of
2544 * directory which is taking modification.
2546 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2549 policy->l_inodebits.bits = ibits;
2552 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2553 * going to be sent to client. If it is - mdt_intent_policy() path will
2554 * fix it up and turn FL_LOCAL flag off.
2556 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2557 res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
2558 info->mti_exp == NULL ? NULL :
2559 &info->mti_exp->exp_handle.h_cookie);
2562 mdt_object_unlock(info, o, lh, 1);
2563 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2564 lh->mlh_pdo_hash != 0 &&
2565 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
2566 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2572 mdt_object_lock_internal(struct mdt_thread_info *info, struct mdt_object *o,
2573 struct mdt_lock_handle *lh, __u64 ibits, bool nonblock,
2576 struct mdt_lock_handle *local_lh = NULL;
2580 if (!mdt_object_remote(o)) {
2581 rc = mdt_object_local_lock(info, o, lh, ibits, nonblock,
2586 /* XXX do not support PERM/LAYOUT/XATTR lock for remote object yet */
2587 ibits &= ~(MDS_INODELOCK_PERM | MDS_INODELOCK_LAYOUT |
2588 MDS_INODELOCK_XATTR);
2590 /* Only enqueue LOOKUP lock for remote object */
2591 if (ibits & MDS_INODELOCK_LOOKUP) {
2592 rc = mdt_object_local_lock(info, o, lh, MDS_INODELOCK_LOOKUP,
2593 nonblock, cos_incompat);
2600 if (ibits & MDS_INODELOCK_UPDATE) {
2601 /* Sigh, PDO needs to enqueue 2 locks right now, but
2602 * enqueue RPC can only request 1 lock, to avoid extra
2603 * RPC, so it will instead enqueue EX lock for remote
2604 * object anyway XXX*/
2605 if (lh->mlh_type == MDT_PDO_LOCK &&
2606 lh->mlh_pdo_hash != 0) {
2607 CDEBUG(D_INFO, "%s: "DFID" convert PDO lock to"
2608 "EX lock.\n", mdt_obd_name(info->mti_mdt),
2609 PFID(mdt_object_fid(o)));
2610 lh->mlh_pdo_hash = 0;
2611 lh->mlh_rreg_mode = LCK_EX;
2612 lh->mlh_type = MDT_REG_LOCK;
2614 rc = mdt_remote_object_lock(info, o, mdt_object_fid(o),
2617 MDS_INODELOCK_UPDATE, nonblock);
2618 if (rc != ELDLM_OK) {
2619 if (local_lh != NULL)
2620 mdt_object_unlock(info, o, local_lh, rc);
2628 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2629 struct mdt_lock_handle *lh, __u64 ibits)
2631 return mdt_object_lock_internal(info, o, lh, ibits, false, false);
2634 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2635 struct mdt_lock_handle *lh, __u64 ibits,
2638 LASSERT(lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX);
2639 return mdt_object_lock_internal(info, o, lh, ibits, false,
2643 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
2644 struct mdt_lock_handle *lh, __u64 ibits)
2646 struct mdt_lock_handle tmp = *lh;
2649 rc = mdt_object_lock_internal(info, o, &tmp, ibits, true, false);
2656 int mdt_reint_object_lock_try(struct mdt_thread_info *info,
2657 struct mdt_object *o, struct mdt_lock_handle *lh,
2658 __u64 ibits, bool cos_incompat)
2660 struct mdt_lock_handle tmp = *lh;
2663 LASSERT(lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX);
2664 rc = mdt_object_lock_internal(info, o, &tmp, ibits, true, cos_incompat);
2672 * Save a lock within request object.
2674 * Keep the lock referenced until whether client ACK or transaction
2675 * commit happens or release the lock immediately depending on input
2676 * parameters. If COS is ON, a write lock is converted to COS lock
2679 * \param info thead info object
2680 * \param h lock handle
2681 * \param mode lock mode
2682 * \param decref force immediate lock releasing
2684 static void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2685 enum ldlm_mode mode, int decref)
2689 if (lustre_handle_is_used(h)) {
2690 if (decref || !info->mti_has_trans ||
2691 !(mode & (LCK_PW | LCK_EX))) {
2692 mdt_fid_unlock(h, mode);
2694 struct mdt_device *mdt = info->mti_mdt;
2695 struct ldlm_lock *lock = ldlm_handle2lock(h);
2696 struct ptlrpc_request *req = mdt_info_req(info);
2699 cos = (mdt_cos_is_enabled(mdt) ||
2700 mdt_slc_is_enabled(mdt));
2702 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2705 /* there is no request if mdt_object_unlock() is called
2706 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
2707 if (likely(req != NULL)) {
2708 CDEBUG(D_HA, "request = %p reply state = %p"
2709 " transno = "LPD64"\n", req,
2710 req->rq_reply_state, req->rq_transno);
2712 ldlm_lock_downgrade(lock, LCK_COS);
2715 ptlrpc_save_lock(req, h, mode, cos);
2717 mdt_fid_unlock(h, mode);
2719 if (mdt_is_lock_sync(lock)) {
2720 CDEBUG(D_HA, "found sync-lock,"
2721 " async commit started\n");
2722 mdt_device_commit_async(info->mti_env,
2725 LDLM_LOCK_PUT(lock);
2734 * Save cross-MDT lock in uncommitted_slc_locks
2736 * Keep the lock referenced until transaction commit happens or release the lock
2737 * immediately depending on input parameters.
2739 * \param info thead info object
2740 * \param h lock handle
2741 * \param mode lock mode
2742 * \param decref force immediate lock releasing
2744 static void mdt_save_remote_lock(struct mdt_thread_info *info,
2745 struct lustre_handle *h, enum ldlm_mode mode,
2750 if (lustre_handle_is_used(h)) {
2751 if (decref || !info->mti_has_trans ||
2752 !(mode & (LCK_PW | LCK_EX))) {
2753 ldlm_lock_decref_and_cancel(h, mode);
2755 struct ldlm_lock *lock = ldlm_handle2lock(h);
2756 struct ptlrpc_request *req = mdt_info_req(info);
2758 LASSERT(req != NULL);
2759 tgt_save_slc_lock(lock, req->rq_transno);
2760 ldlm_lock_decref(h, mode);
2769 * Unlock mdt object.
2771 * Immeditely release the regular lock and the PDO lock or save the
2772 * lock in request and keep them referenced until client ACK or
2773 * transaction commit.
2775 * \param info thread info object
2776 * \param o mdt object
2777 * \param lh mdt lock handle referencing regular and PDO locks
2778 * \param decref force immediate lock releasing
2780 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2781 struct mdt_lock_handle *lh, int decref)
2785 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2786 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2787 mdt_save_remote_lock(info, &lh->mlh_rreg_lh, lh->mlh_rreg_mode, decref);
2792 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2793 const struct lu_fid *f,
2794 struct mdt_lock_handle *lh,
2797 struct mdt_object *o;
2799 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2803 rc = mdt_object_lock(info, o, lh, ibits);
2805 mdt_object_put(info->mti_env, o);
2812 void mdt_object_unlock_put(struct mdt_thread_info * info,
2813 struct mdt_object * o,
2814 struct mdt_lock_handle *lh,
2817 mdt_object_unlock(info, o, lh, decref);
2818 mdt_object_put(info->mti_env, o);
2822 * Generic code handling requests that have struct mdt_body passed in:
2824 * - extract mdt_body from request and save it in @info, if present;
2826 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2829 * - if HABEO_CORPUS flag is set for this request type check whether object
2830 * actually exists on storage (lu_object_exists()).
2833 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2835 const struct mdt_body *body;
2836 struct mdt_object *obj;
2837 const struct lu_env *env;
2838 struct req_capsule *pill;
2842 env = info->mti_env;
2843 pill = info->mti_pill;
2845 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2849 if (!(body->mbo_valid & OBD_MD_FLID))
2852 if (!fid_is_sane(&body->mbo_fid1)) {
2853 CERROR("Invalid fid: "DFID"\n", PFID(&body->mbo_fid1));
2857 obj = mdt_object_find(env, info->mti_mdt, &body->mbo_fid1);
2859 if ((flags & HABEO_CORPUS) && !mdt_object_exists(obj)) {
2860 mdt_object_put(env, obj);
2863 info->mti_object = obj;
2872 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2874 struct req_capsule *pill = info->mti_pill;
2878 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2879 rc = mdt_body_unpack(info, flags);
2883 if (rc == 0 && (flags & HABEO_REFERO)) {
2885 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2886 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2888 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2889 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
2892 rc = req_capsule_server_pack(pill);
2897 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2899 lh->mlh_type = MDT_NUL_LOCK;
2900 lh->mlh_reg_lh.cookie = 0ull;
2901 lh->mlh_reg_mode = LCK_MINMODE;
2902 lh->mlh_pdo_lh.cookie = 0ull;
2903 lh->mlh_pdo_mode = LCK_MINMODE;
2904 lh->mlh_rreg_lh.cookie = 0ull;
2905 lh->mlh_rreg_mode = LCK_MINMODE;
2908 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2910 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2911 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2915 * Initialize fields of struct mdt_thread_info. Other fields are left in
2916 * uninitialized state, because it's too expensive to zero out whole
2917 * mdt_thread_info (> 1K) on each request arrival.
2919 void mdt_thread_info_init(struct ptlrpc_request *req,
2920 struct mdt_thread_info *info)
2924 info->mti_pill = &req->rq_pill;
2927 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2928 mdt_lock_handle_init(&info->mti_lh[i]);
2930 /* mdt device: it can be NULL while CONNECT */
2931 if (req->rq_export) {
2932 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2933 info->mti_exp = req->rq_export;
2935 info->mti_mdt = NULL;
2936 info->mti_env = req->rq_svc_thread->t_env;
2937 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2939 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2940 info->mti_big_buf = LU_BUF_NULL;
2941 info->mti_body = NULL;
2942 info->mti_object = NULL;
2943 info->mti_dlm_req = NULL;
2944 info->mti_has_trans = 0;
2945 info->mti_cross_ref = 0;
2946 info->mti_opdata = 0;
2947 info->mti_big_lmm_used = 0;
2949 info->mti_spec.no_create = 0;
2950 info->mti_spec.sp_rm_entry = 0;
2951 info->mti_spec.sp_permitted = 0;
2952 info->mti_spec.sp_migrate_close = 0;
2954 info->mti_spec.u.sp_ea.eadata = NULL;
2955 info->mti_spec.u.sp_ea.eadatalen = 0;
2958 void mdt_thread_info_fini(struct mdt_thread_info *info)
2962 if (info->mti_object != NULL) {
2963 mdt_object_put(info->mti_env, info->mti_object);
2964 info->mti_object = NULL;
2967 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2968 mdt_lock_handle_fini(&info->mti_lh[i]);
2969 info->mti_env = NULL;
2970 info->mti_pill = NULL;
2971 info->mti_exp = NULL;
2973 if (unlikely(info->mti_big_buf.lb_buf != NULL))
2974 lu_buf_free(&info->mti_big_buf);
2977 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
2979 struct mdt_thread_info *mti;
2981 mti = mdt_th_info(tsi->tsi_env);
2982 LASSERT(mti != NULL);
2984 mdt_thread_info_init(tgt_ses_req(tsi), mti);
2985 if (tsi->tsi_corpus != NULL) {
2986 mti->mti_object = mdt_obj(tsi->tsi_corpus);
2987 lu_object_get(tsi->tsi_corpus);
2989 mti->mti_body = tsi->tsi_mdt_body;
2990 mti->mti_dlm_req = tsi->tsi_dlm_req;
2995 static int mdt_tgt_connect(struct tgt_session_info *tsi)
2997 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_DELAY_CONDITIONAL) &&
2999 tsi2mdt_info(tsi)->mti_mdt->mdt_seq_site.ss_node_id) {
3000 set_current_state(TASK_UNINTERRUPTIBLE);
3001 schedule_timeout(msecs_to_jiffies(3 * MSEC_PER_SEC));
3004 return tgt_connect(tsi);
3022 static int mdt_intent_getattr(enum mdt_it_code opcode,
3023 struct mdt_thread_info *info,
3024 struct ldlm_lock **,
3027 static int mdt_intent_getxattr(enum mdt_it_code opcode,
3028 struct mdt_thread_info *info,
3029 struct ldlm_lock **lockp,
3032 static int mdt_intent_layout(enum mdt_it_code opcode,
3033 struct mdt_thread_info *info,
3034 struct ldlm_lock **,
3036 static int mdt_intent_reint(enum mdt_it_code opcode,
3037 struct mdt_thread_info *info,
3038 struct ldlm_lock **,
3041 static struct mdt_it_flavor {
3042 const struct req_format *it_fmt;
3044 int (*it_act)(enum mdt_it_code ,
3045 struct mdt_thread_info *,
3046 struct ldlm_lock **,
3049 } mdt_it_flavor[] = {
3051 .it_fmt = &RQF_LDLM_INTENT,
3052 /*.it_flags = HABEO_REFERO,*/
3054 .it_act = mdt_intent_reint,
3055 .it_reint = REINT_OPEN
3058 .it_fmt = &RQF_LDLM_INTENT,
3060 * OCREAT is not a MUTABOR request as if the file
3062 * We do the extra check of OBD_CONNECT_RDONLY in
3063 * mdt_reint_open() when we really need to create
3067 .it_act = mdt_intent_reint,
3068 .it_reint = REINT_OPEN
3071 .it_fmt = &RQF_LDLM_INTENT,
3072 .it_flags = MUTABOR,
3073 .it_act = mdt_intent_reint,
3074 .it_reint = REINT_CREATE
3076 [MDT_IT_GETATTR] = {
3077 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3078 .it_flags = HABEO_REFERO,
3079 .it_act = mdt_intent_getattr
3081 [MDT_IT_READDIR] = {
3087 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3088 .it_flags = HABEO_REFERO,
3089 .it_act = mdt_intent_getattr
3092 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
3093 .it_flags = MUTABOR,
3095 .it_reint = REINT_UNLINK
3099 .it_flags = MUTABOR,
3102 [MDT_IT_GETXATTR] = {
3103 .it_fmt = &RQF_LDLM_INTENT_GETXATTR,
3104 .it_flags = HABEO_CORPUS,
3105 .it_act = mdt_intent_getxattr
3108 .it_fmt = &RQF_LDLM_INTENT_LAYOUT,
3110 .it_act = mdt_intent_layout
3115 mdt_intent_lock_replace(struct mdt_thread_info *info,
3116 struct ldlm_lock **lockp,
3117 struct mdt_lock_handle *lh,
3118 __u64 flags, int result)
3120 struct ptlrpc_request *req = mdt_info_req(info);
3121 struct ldlm_lock *lock = *lockp;
3122 struct ldlm_lock *new_lock;
3124 /* If possible resent found a lock, @lh is set to its handle */
3125 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3127 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3128 lh->mlh_reg_lh.cookie = 0;
3132 if (new_lock == NULL && (flags & LDLM_FL_RESENT)) {
3133 /* Lock is pinned by ldlm_handle_enqueue0() as it is
3134 * a resend case, however, it could be already destroyed
3135 * due to client eviction or a raced cancel RPC. */
3136 LDLM_DEBUG_NOLOCK("Invalid lock handle "LPX64"\n",
3137 lh->mlh_reg_lh.cookie);
3138 lh->mlh_reg_lh.cookie = 0;
3142 LASSERTF(new_lock != NULL,
3143 "lockh "LPX64" flags "LPX64" rc %d\n",
3144 lh->mlh_reg_lh.cookie, flags, result);
3147 * If we've already given this lock to a client once, then we should
3148 * have no readers or writers. Otherwise, we should have one reader
3149 * _or_ writer ref (which will be zeroed below) before returning the
3152 if (new_lock->l_export == req->rq_export) {
3153 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3155 LASSERT(new_lock->l_export == NULL);
3156 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3161 if (new_lock->l_export == req->rq_export) {
3163 * Already gave this to the client, which means that we
3164 * reconstructed a reply.
3166 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3169 LDLM_LOCK_RELEASE(new_lock);
3170 lh->mlh_reg_lh.cookie = 0;
3171 RETURN(ELDLM_LOCK_REPLACED);
3175 * Fixup the lock to be given to the client.
3177 lock_res_and_lock(new_lock);
3178 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3179 * possible blocking AST. */
3180 while (new_lock->l_readers > 0) {
3181 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3182 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3183 new_lock->l_readers--;
3185 while (new_lock->l_writers > 0) {
3186 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3187 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3188 new_lock->l_writers--;
3191 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3192 new_lock->l_blocking_ast = lock->l_blocking_ast;
3193 new_lock->l_completion_ast = lock->l_completion_ast;
3194 new_lock->l_remote_handle = lock->l_remote_handle;
3195 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3197 unlock_res_and_lock(new_lock);
3199 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3200 &new_lock->l_remote_handle,
3201 &new_lock->l_exp_hash);
3203 LDLM_LOCK_RELEASE(new_lock);
3204 lh->mlh_reg_lh.cookie = 0;
3206 RETURN(ELDLM_LOCK_REPLACED);
3209 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3210 struct ldlm_lock *new_lock,
3211 struct mdt_lock_handle *lh,
3214 struct ptlrpc_request *req = mdt_info_req(info);
3215 struct ldlm_request *dlmreq;
3217 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3220 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3222 /* Check if this is a resend case (MSG_RESENT is set on RPC) and a
3223 * lock was found by ldlm_handle_enqueue(); if so @lh must be
3225 if (flags & LDLM_FL_RESENT) {
3226 lh->mlh_reg_lh.cookie = new_lock->l_handle.h_cookie;
3227 lh->mlh_reg_mode = new_lock->l_granted_mode;
3229 LDLM_DEBUG(new_lock, "Restoring lock cookie");
3230 DEBUG_REQ(D_DLMTRACE, req, "restoring lock cookie "LPX64,
3231 lh->mlh_reg_lh.cookie);
3236 * If the xid matches, then we know this is a resent request, and allow
3237 * it. (It's probably an OPEN, for which we don't send a lock.
3239 if (req_can_reconstruct(req, NULL))
3243 * This remote handle isn't enqueued, so we never received or processed
3244 * this request. Clear MSG_RESENT, because it can be handled like any
3245 * normal request now.
3247 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3249 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
3250 dlmreq->lock_handle[0].cookie);
3253 static int mdt_intent_getxattr(enum mdt_it_code opcode,
3254 struct mdt_thread_info *info,
3255 struct ldlm_lock **lockp,
3258 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3259 struct ldlm_reply *ldlm_rep = NULL;
3263 * Initialize lhc->mlh_reg_lh either from a previously granted lock
3264 * (for the resend case) or a new lock. Below we will use it to
3265 * replace the original lock.
3267 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3268 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3269 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
3270 rc = mdt_object_lock(info, info->mti_object, lhc,
3271 MDS_INODELOCK_XATTR);
3276 grc = mdt_getxattr(info);
3278 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, 0);
3280 if (mdt_info_req(info)->rq_repmsg != NULL)
3281 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3282 if (ldlm_rep == NULL)
3283 RETURN(err_serious(-EFAULT));
3285 ldlm_rep->lock_policy_res2 = grc;
3290 static int mdt_intent_getattr(enum mdt_it_code opcode,
3291 struct mdt_thread_info *info,
3292 struct ldlm_lock **lockp,
3295 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3297 struct ldlm_reply *ldlm_rep;
3298 struct mdt_body *reqbody;
3299 struct mdt_body *repbody;
3303 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3306 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3309 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
3310 repbody->mbo_eadatasize = 0;
3311 repbody->mbo_aclsize = 0;
3315 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
3317 case MDT_IT_GETATTR:
3318 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
3322 CERROR("Unsupported intent (%d)\n", opcode);
3323 GOTO(out_shrink, rc = -EINVAL);
3326 rc = mdt_init_ucred_intent_getattr(info, reqbody);
3328 GOTO(out_shrink, rc);
3330 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3331 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3333 /* Get lock from request for possible resent case. */
3334 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3336 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3337 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3339 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3340 ldlm_rep->lock_policy_res2 = 0;
3341 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3342 ldlm_rep->lock_policy_res2) {
3343 lhc->mlh_reg_lh.cookie = 0ull;
3344 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3347 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3350 mdt_exit_ucred(info);
3352 mdt_client_compatibility(info);
3353 rc2 = mdt_fix_reply(info);
3359 static int mdt_intent_layout(enum mdt_it_code opcode,
3360 struct mdt_thread_info *info,
3361 struct ldlm_lock **lockp,
3364 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_LAYOUT];
3365 struct layout_intent *layout;
3367 struct mdt_object *obj = NULL;
3368 int layout_size = 0;
3372 if (opcode != MDT_IT_LAYOUT) {
3373 CERROR("%s: Unknown intent (%d)\n", mdt_obd_name(info->mti_mdt),
3378 layout = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
3382 if (layout->li_opc != LAYOUT_INTENT_ACCESS) {
3383 CERROR("%s: Unsupported layout intent opc %d\n",
3384 mdt_obd_name(info->mti_mdt), layout->li_opc);
3388 fid = &info->mti_tmp_fid2;
3389 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
3391 /* Get lock from request for possible resent case. */
3392 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3394 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
3396 GOTO(out, rc = PTR_ERR(obj));
3398 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
3399 layout_size = mdt_attr_get_eabuf_size(info, obj);
3400 if (layout_size < 0)
3401 GOTO(out_obj, rc = layout_size);
3403 if (layout_size > info->mti_mdt->mdt_max_mdsize)
3404 info->mti_mdt->mdt_max_mdsize = layout_size;
3407 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
3408 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
3410 rc = req_capsule_server_pack(info->mti_pill);
3414 mdt_object_put(info->mti_env, obj);
3416 if (rc == 0 && lustre_handle_is_used(&lhc->mlh_reg_lh))
3417 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3420 lhc->mlh_reg_lh.cookie = 0;
3425 static int mdt_intent_reint(enum mdt_it_code opcode,
3426 struct mdt_thread_info *info,
3427 struct ldlm_lock **lockp,
3430 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3431 struct ldlm_reply *rep = NULL;
3435 static const struct req_format *intent_fmts[REINT_MAX] = {
3436 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3437 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3442 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
3446 if (mdt_it_flavor[opcode].it_reint != opc) {
3447 CERROR("Reint code %ld doesn't match intent: %d\n",
3449 RETURN(err_serious(-EPROTO));
3452 /* Get lock from request for possible resent case. */
3453 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3455 rc = mdt_reint_internal(info, lhc, opc);
3457 /* Check whether the reply has been packed successfully. */
3458 if (mdt_info_req(info)->rq_repmsg != NULL)
3459 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3461 RETURN(err_serious(-EFAULT));
3463 /* MDC expects this in any case */
3465 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3467 /* the open lock or the lock for cross-ref object should be
3468 * returned to the client */
3469 if (lustre_handle_is_used(&lhc->mlh_reg_lh) &&
3470 (rc == 0 || rc == -MDT_EREMOTE_OPEN)) {
3471 rep->lock_policy_res2 = 0;
3472 rc = mdt_intent_lock_replace(info, lockp, lhc, flags, rc);
3476 rep->lock_policy_res2 = clear_serious(rc);
3478 if (rep->lock_policy_res2 == -ENOENT &&
3479 mdt_get_disposition(rep, DISP_LOOKUP_NEG) &&
3480 !mdt_get_disposition(rep, DISP_OPEN_CREATE))
3481 rep->lock_policy_res2 = 0;
3483 lhc->mlh_reg_lh.cookie = 0ull;
3484 if (rc == -ENOTCONN || rc == -ENODEV ||
3485 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3487 * If it is the disconnect error (ENODEV & ENOCONN), the error
3488 * will be returned by rq_status, and client at ptlrpc layer
3489 * will detect this, then disconnect, reconnect the import
3490 * immediately, instead of impacting the following the rpc.
3495 * For other cases, the error will be returned by intent, and client
3496 * will retrieve the result from intent.
3498 RETURN(ELDLM_LOCK_ABORTED);
3501 static int mdt_intent_code(enum ldlm_intent_flags itcode)
3509 case IT_OPEN|IT_CREAT:
3516 rc = MDT_IT_READDIR;
3519 rc = MDT_IT_GETATTR;
3531 rc = MDT_IT_GETXATTR;
3536 case IT_QUOTA_DQACQ:
3541 CERROR("Unknown intent opcode: 0x%08x\n", itcode);
3548 static int mdt_intent_opc(enum ldlm_intent_flags itopc,
3549 struct mdt_thread_info *info,
3550 struct ldlm_lock **lockp, __u64 flags)
3552 struct req_capsule *pill = info->mti_pill;
3553 struct ptlrpc_request *req = mdt_info_req(info);
3554 struct mdt_it_flavor *flv;
3559 opc = mdt_intent_code(itopc);
3563 if (opc == MDT_IT_QUOTA) {
3564 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
3567 RETURN(-EOPNOTSUPP);
3569 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
3570 /* pass the request to quota master */
3571 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
3572 mdt_info_req(info), lockp,
3577 flv = &mdt_it_flavor[opc];
3578 if (flv->it_fmt != NULL)
3579 req_capsule_extend(pill, flv->it_fmt);
3581 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
3585 if (flv->it_flags & MUTABOR &&
3586 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
3589 if (flv->it_act != NULL) {
3590 struct ldlm_reply *rep;
3592 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_INTENT_DELAY, 10);
3594 /* execute policy */
3595 rc = flv->it_act(opc, info, lockp, flags);
3597 /* Check whether the reply has been packed successfully. */
3598 if (req->rq_repmsg != NULL) {
3599 rep = req_capsule_server_get(info->mti_pill,
3601 rep->lock_policy_res2 =
3602 ptlrpc_status_hton(rep->lock_policy_res2);
3609 static int mdt_intent_policy(struct ldlm_namespace *ns,
3610 struct ldlm_lock **lockp, void *req_cookie,
3611 enum ldlm_mode mode, __u64 flags, void *data)
3613 struct tgt_session_info *tsi;
3614 struct mdt_thread_info *info;
3615 struct ptlrpc_request *req = req_cookie;
3616 struct ldlm_intent *it;
3617 struct req_capsule *pill;
3622 LASSERT(req != NULL);
3624 tsi = tgt_ses_info(req->rq_svc_thread->t_env);
3626 info = tsi2mdt_info(tsi);
3627 LASSERT(info != NULL);
3628 pill = info->mti_pill;
3629 LASSERT(pill->rc_req == req);
3631 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
3632 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
3633 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
3635 rc = mdt_intent_opc(it->opc, info, lockp, flags);
3639 /* Lock without inodebits makes no sense and will oops
3640 * later in ldlm. Let's check it now to see if we have
3641 * ibits corrupted somewhere in mdt_intent_opc().
3642 * The case for client miss to set ibits has been
3643 * processed by others. */
3644 LASSERT(ergo(info->mti_dlm_req->lock_desc.l_resource.\
3645 lr_type == LDLM_IBITS,
3646 info->mti_dlm_req->lock_desc.\
3647 l_policy_data.l_inodebits.bits != 0));
3649 rc = err_serious(-EFAULT);
3651 /* No intent was provided */
3652 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
3653 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
3654 rc = req_capsule_server_pack(pill);
3656 rc = err_serious(rc);
3658 mdt_thread_info_fini(info);
3662 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
3664 struct seq_server_site *ss = mdt_seq_site(mdt);
3666 if (ss->ss_node_id == 0)
3669 if (ss->ss_client_seq != NULL) {
3670 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
3671 ss->ss_client_seq->lcs_exp = NULL;
3674 if (ss->ss_server_fld != NULL) {
3675 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
3676 ss->ss_server_fld->lsf_control_exp = NULL;
3680 static void mdt_seq_fini_cli(struct mdt_device *mdt)
3682 struct seq_server_site *ss = mdt_seq_site(mdt);
3687 if (ss->ss_server_seq != NULL)
3688 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
3691 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
3693 mdt_seq_fini_cli(mdt);
3694 mdt_deregister_seq_exp(mdt);
3696 return seq_site_fini(env, mdt_seq_site(mdt));
3700 * It will retrieve its FLDB entries from MDT0, and it only happens
3701 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
3702 * and it needs to refresh FLDB from the MDT0.
3704 static int mdt_register_lwp_callback(void *data)
3707 struct mdt_device *mdt = data;
3708 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
3712 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
3714 rc = lu_env_init(&env, LCT_MD_THREAD);
3716 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
3720 /* Allocate new sequence now to avoid creating local transaction
3721 * in the normal transaction process */
3722 rc = seq_server_check_and_alloc_super(&env,
3723 mdt_seq_site(mdt)->ss_server_seq);
3728 rc = fld_update_from_controller(&env, fld);
3730 CERROR("%s: cannot update controller: rc = %d\n",
3731 mdt_obd_name(mdt), rc);
3740 static int mdt_register_seq_exp(struct mdt_device *mdt)
3742 struct seq_server_site *ss = mdt_seq_site(mdt);
3743 char *lwp_name = NULL;
3746 if (ss->ss_node_id == 0)
3749 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
3750 if (lwp_name == NULL)
3751 GOTO(out_free, rc = -ENOMEM);
3753 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
3757 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
3762 rc = lustre_register_lwp_item(lwp_name,
3763 &ss->ss_server_fld->lsf_control_exp,
3764 mdt_register_lwp_callback, mdt);
3766 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
3767 ss->ss_client_seq->lcs_exp = NULL;
3771 if (lwp_name != NULL)
3772 OBD_FREE(lwp_name, MAX_OBD_NAME);
3778 * Init client sequence manager which is used by local MDS to talk to sequence
3779 * controller on remote node.
3781 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
3783 struct seq_server_site *ss = mdt_seq_site(mdt);
3788 /* check if this is adding the first MDC and controller is not yet
3790 OBD_ALLOC_PTR(ss->ss_client_seq);
3791 if (ss->ss_client_seq == NULL)
3794 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3795 if (prefix == NULL) {
3796 OBD_FREE_PTR(ss->ss_client_seq);
3797 ss->ss_client_seq = NULL;
3801 /* Note: seq_client_fini will be called in seq_site_fini */
3802 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
3803 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
3804 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
3806 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3808 OBD_FREE_PTR(ss->ss_client_seq);
3809 ss->ss_client_seq = NULL;
3813 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
3818 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
3820 struct seq_server_site *ss;
3824 ss = mdt_seq_site(mdt);
3825 /* init sequence controller server(MDT0) */
3826 if (ss->ss_node_id == 0) {
3827 OBD_ALLOC_PTR(ss->ss_control_seq);
3828 if (ss->ss_control_seq == NULL)
3831 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
3832 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
3835 GOTO(out_seq_fini, rc);
3838 /* Init normal sequence server */
3839 OBD_ALLOC_PTR(ss->ss_server_seq);
3840 if (ss->ss_server_seq == NULL)
3841 GOTO(out_seq_fini, rc = -ENOMEM);
3843 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
3844 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
3846 GOTO(out_seq_fini, rc);
3848 /* init seq client for seq server to talk to seq controller(MDT0) */
3849 rc = mdt_seq_init_cli(env, mdt);
3851 GOTO(out_seq_fini, rc);
3853 if (ss->ss_node_id != 0)
3854 /* register controller export through lwp */
3855 rc = mdt_register_seq_exp(mdt);
3860 mdt_seq_fini(env, mdt);
3868 static int mdt_fld_fini(const struct lu_env *env,
3869 struct mdt_device *m)
3871 struct seq_server_site *ss = mdt_seq_site(m);
3874 if (ss && ss->ss_server_fld) {
3875 fld_server_fini(env, ss->ss_server_fld);
3876 OBD_FREE_PTR(ss->ss_server_fld);
3877 ss->ss_server_fld = NULL;
3883 static int mdt_fld_init(const struct lu_env *env,
3885 struct mdt_device *m)
3887 struct seq_server_site *ss;
3891 ss = mdt_seq_site(m);
3893 OBD_ALLOC_PTR(ss->ss_server_fld);
3894 if (ss->ss_server_fld == NULL)
3895 RETURN(rc = -ENOMEM);
3897 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
3900 OBD_FREE_PTR(ss->ss_server_fld);
3901 ss->ss_server_fld = NULL;
3908 static void mdt_stack_pre_fini(const struct lu_env *env,
3909 struct mdt_device *m, struct lu_device *top)
3911 struct lustre_cfg_bufs *bufs;
3912 struct lustre_cfg *lcfg;
3913 struct mdt_thread_info *info;
3918 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3919 LASSERT(info != NULL);
3921 bufs = &info->mti_u.bufs;
3923 LASSERT(m->mdt_child_exp);
3924 LASSERT(m->mdt_child_exp->exp_obd);
3926 /* process cleanup, pass mdt obd name to get obd umount flags */
3927 /* XXX: this is needed because all layers are referenced by
3928 * objects (some of them are pinned by osd, for example *
3929 * the proper solution should be a model where object used
3930 * by osd only doesn't have mdt/mdd slices -bzzz */
3931 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
3932 lustre_cfg_bufs_set_string(bufs, 1, NULL);
3933 lcfg = lustre_cfg_new(LCFG_PRE_CLEANUP, bufs);
3937 top->ld_ops->ldo_process_config(env, top, lcfg);
3938 lustre_cfg_free(lcfg);
3942 static void mdt_stack_fini(const struct lu_env *env,
3943 struct mdt_device *m, struct lu_device *top)
3945 struct obd_device *obd = mdt2obd_dev(m);
3946 struct lustre_cfg_bufs *bufs;
3947 struct lustre_cfg *lcfg;
3948 struct mdt_thread_info *info;
3952 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3953 LASSERT(info != NULL);
3955 lu_dev_del_linkage(top->ld_site, top);
3957 lu_site_purge(env, top->ld_site, -1);
3959 bufs = &info->mti_u.bufs;
3960 /* process cleanup, pass mdt obd name to get obd umount flags */
3961 /* another purpose is to let all layers to release their objects */
3962 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
3967 lustre_cfg_bufs_set_string(bufs, 1, flags);
3968 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
3973 top->ld_ops->ldo_process_config(env, top, lcfg);
3974 lustre_cfg_free(lcfg);
3976 lu_site_purge(env, top->ld_site, -1);
3978 m->mdt_child = NULL;
3979 m->mdt_bottom = NULL;
3981 obd_disconnect(m->mdt_child_exp);
3982 m->mdt_child_exp = NULL;
3984 obd_disconnect(m->mdt_bottom_exp);
3985 m->mdt_child_exp = NULL;
3988 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
3989 const char *next, struct obd_export **exp)
3991 struct obd_connect_data *data = NULL;
3992 struct obd_device *obd;
3996 OBD_ALLOC_PTR(data);
3998 GOTO(out, rc = -ENOMEM);
4000 obd = class_name2obd(next);
4002 CERROR("%s: can't locate next device: %s\n",
4003 mdt_obd_name(m), next);
4004 GOTO(out, rc = -ENOTCONN);
4007 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4008 data->ocd_version = LUSTRE_VERSION_CODE;
4010 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
4012 CERROR("%s: cannot connect to next dev %s (%d)\n",
4013 mdt_obd_name(m), next, rc);
4023 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
4024 struct lustre_cfg *cfg)
4026 char *dev = lustre_cfg_string(cfg, 0);
4027 int rc, name_size, uuid_size;
4028 char *name, *uuid, *p;
4029 struct lustre_cfg_bufs *bufs;
4030 struct lustre_cfg *lcfg;
4031 struct obd_device *obd;
4032 struct lustre_profile *lprof;
4033 struct lu_site *site;
4036 /* in 1.8 we had the only device in the stack - MDS.
4037 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
4038 * in 2.3 OSD is instantiated by obd_mount.c, so we need
4039 * to generate names and setup MDT, MDD. MDT will be using
4040 * generated name to connect to MDD. for MDD the next device
4041 * will be LOD with name taken from so called "profile" which
4042 * is generated by mount_option line
4044 * 1.8 MGS generates config. commands like this:
4045 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
4046 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
4047 * 2.0 MGS generates config. commands like this:
4048 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
4049 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4050 * 3:lustre-MDT0000-mdtlov 4:f
4052 * we generate MDD name from MDT one, just replacing T with D
4054 * after all the preparations, the logical equivalent will be
4055 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
4056 * 3:lustre-MDT0000-mdtlov 4:f
4057 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4058 * 3:lustre-MDD0000 4:f
4060 * notice we build the stack from down to top: MDD first, then MDT */
4062 name_size = MAX_OBD_NAME;
4063 uuid_size = MAX_OBD_NAME;
4065 OBD_ALLOC(name, name_size);
4066 OBD_ALLOC(uuid, uuid_size);
4067 if (name == NULL || uuid == NULL)
4068 GOTO(cleanup_mem, rc = -ENOMEM);
4070 OBD_ALLOC_PTR(bufs);
4072 GOTO(cleanup_mem, rc = -ENOMEM);
4075 p = strstr(name, "-MDT");
4077 GOTO(free_bufs, rc = -ENOMEM);
4080 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
4082 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4083 if (lprof == NULL || lprof->lp_dt == NULL) {
4084 CERROR("can't find the profile: %s\n",
4085 lustre_cfg_string(cfg, 0));
4086 GOTO(free_bufs, rc = -EINVAL);
4089 lustre_cfg_bufs_reset(bufs, name);
4090 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
4091 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4092 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4094 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
4096 GOTO(put_profile, rc = -ENOMEM);
4098 rc = class_attach(lcfg);
4100 GOTO(lcfg_cleanup, rc);
4102 obd = class_name2obd(name);
4104 CERROR("Can not find obd %s (%s in config)\n",
4105 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
4106 GOTO(lcfg_cleanup, rc = -EINVAL);
4109 lustre_cfg_free(lcfg);
4111 lustre_cfg_bufs_reset(bufs, name);
4112 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4113 lustre_cfg_bufs_set_string(bufs, 2, dev);
4114 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4116 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4118 GOTO(class_detach, rc = -ENOMEM);
4120 rc = class_setup(obd, lcfg);
4122 GOTO(class_detach, rc);
4124 /* connect to MDD we just setup */
4125 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
4127 GOTO(class_detach, rc);
4129 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
4131 LASSERT(mdt_lu_site(mdt) == NULL);
4132 mdt->mdt_lu_dev.ld_site = site;
4133 site->ls_top_dev = &mdt->mdt_lu_dev;
4134 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
4136 /* now connect to bottom OSD */
4137 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
4138 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
4140 GOTO(class_detach, rc);
4142 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
4144 rc = lu_env_refill((struct lu_env *)env);
4146 CERROR("Failure to refill session: '%d'\n", rc);
4148 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
4153 class_detach(obd, lcfg);
4155 lustre_cfg_free(lcfg);
4157 class_put_profile(lprof);
4162 OBD_FREE(name, name_size);
4164 OBD_FREE(uuid, uuid_size);
4168 /* setup quota master target on MDT0 */
4169 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
4170 struct lustre_cfg *cfg)
4172 struct obd_device *obd;
4173 char *dev = lustre_cfg_string(cfg, 0);
4174 char *qmtname, *uuid, *p;
4175 struct lustre_cfg_bufs *bufs;
4176 struct lustre_cfg *lcfg;
4177 struct lustre_profile *lprof;
4178 struct obd_connect_data *data;
4182 LASSERT(mdt->mdt_qmt_exp == NULL);
4183 LASSERT(mdt->mdt_qmt_dev == NULL);
4185 /* quota master is on MDT0 only for now */
4186 if (mdt->mdt_seq_site.ss_node_id != 0)
4189 /* MGS generates config commands which look as follows:
4190 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4191 * 3:lustre-MDT0000-mdtlov 4:f
4193 * We generate the QMT name from the MDT one, just replacing MD with QM
4194 * after all the preparations, the logical equivalent will be:
4195 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
4196 * 3:lustre-MDT0000-osd 4:f */
4197 OBD_ALLOC(qmtname, MAX_OBD_NAME);
4198 OBD_ALLOC(uuid, UUID_MAX);
4199 OBD_ALLOC_PTR(bufs);
4200 OBD_ALLOC_PTR(data);
4201 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
4202 GOTO(cleanup_mem, rc = -ENOMEM);
4204 strcpy(qmtname, dev);
4205 p = strstr(qmtname, "-MDT");
4207 GOTO(cleanup_mem, rc = -ENOMEM);
4208 /* replace MD with QM */
4212 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
4214 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4215 if (lprof == NULL || lprof->lp_dt == NULL) {
4216 CERROR("can't find profile for %s\n",
4217 lustre_cfg_string(cfg, 0));
4218 GOTO(cleanup_mem, rc = -EINVAL);
4221 lustre_cfg_bufs_reset(bufs, qmtname);
4222 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
4223 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4224 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4226 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
4228 GOTO(put_profile, rc = -ENOMEM);
4230 rc = class_attach(lcfg);
4232 GOTO(lcfg_cleanup, rc);
4234 obd = class_name2obd(qmtname);
4236 CERROR("Can not find obd %s (%s in config)\n", qmtname,
4237 lustre_cfg_string(cfg, 0));
4238 GOTO(lcfg_cleanup, rc = -EINVAL);
4241 lustre_cfg_free(lcfg);
4243 lustre_cfg_bufs_reset(bufs, qmtname);
4244 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4245 lustre_cfg_bufs_set_string(bufs, 2, dev);
4247 /* for quota, the next device should be the OSD device */
4248 lustre_cfg_bufs_set_string(bufs, 3,
4249 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
4251 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4253 GOTO(class_detach, rc = -ENOMEM);
4255 rc = class_setup(obd, lcfg);
4257 GOTO(class_detach, rc);
4259 mdt->mdt_qmt_dev = obd->obd_lu_dev;
4261 /* configure local quota objects */
4262 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
4266 GOTO(class_cleanup, rc);
4268 /* connect to quota master target */
4269 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4270 data->ocd_version = LUSTRE_VERSION_CODE;
4271 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
4274 CERROR("cannot connect to quota master device %s (%d)\n",
4276 GOTO(class_cleanup, rc);
4282 class_manual_cleanup(obd);
4283 mdt->mdt_qmt_dev = NULL;
4287 class_detach(obd, lcfg);
4289 lustre_cfg_free(lcfg);
4291 class_put_profile(lprof);
4296 OBD_FREE(qmtname, MAX_OBD_NAME);
4298 OBD_FREE(uuid, UUID_MAX);
4304 /* Shutdown quota master target associated with mdt */
4305 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
4309 if (mdt->mdt_qmt_exp == NULL)
4311 LASSERT(mdt->mdt_qmt_dev != NULL);
4313 /* the qmt automatically shuts down when the mdt disconnects */
4314 obd_disconnect(mdt->mdt_qmt_exp);
4315 mdt->mdt_qmt_exp = NULL;
4316 mdt->mdt_qmt_dev = NULL;
4320 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
4321 * for now. This will be removed along with converting rest of MDT code
4322 * to use tgt_session_info */
4323 static int mdt_tgt_getxattr(struct tgt_session_info *tsi)
4325 struct mdt_thread_info *info = tsi2mdt_info(tsi);
4328 rc = mdt_getxattr(info);
4330 mdt_thread_info_fini(info);
4334 static struct tgt_handler mdt_tgt_handlers[] = {
4335 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4336 0, MDS_CONNECT, mdt_tgt_connect,
4337 &RQF_CONNECT, LUSTRE_OBD_VERSION),
4338 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4339 0, MDS_DISCONNECT, tgt_disconnect,
4340 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
4341 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4342 HABEO_REFERO, MDS_SET_INFO, mdt_set_info,
4343 &RQF_OBD_SET_INFO, LUSTRE_MDS_VERSION),
4344 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
4345 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_GET_ROOT, mdt_get_root),
4346 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETATTR, mdt_getattr),
4347 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_GETATTR_NAME,
4349 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETXATTR, mdt_tgt_getxattr),
4350 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_STATFS, mdt_statfs),
4351 TGT_MDT_HDL(0 | MUTABOR, MDS_REINT, mdt_reint),
4352 TGT_MDT_HDL(HABEO_CORPUS, MDS_CLOSE, mdt_close),
4353 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_READPAGE, mdt_readpage),
4354 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_SYNC, mdt_sync),
4355 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
4356 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_PROGRESS,
4358 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_REGISTER,
4359 mdt_hsm_ct_register),
4360 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_UNREGISTER,
4361 mdt_hsm_ct_unregister),
4362 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_STATE_GET,
4364 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_STATE_SET,
4366 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_ACTION, mdt_hsm_action),
4367 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_REQUEST,
4369 TGT_MDT_HDL(HABEO_CLAVIS | HABEO_CORPUS | HABEO_REFERO | MUTABOR,
4374 static struct tgt_handler mdt_sec_ctx_ops[] = {
4375 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
4376 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
4377 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
4380 static struct tgt_handler mdt_quota_ops[] = {
4381 TGT_QUOTA_HDL(HABEO_REFERO, QUOTA_DQACQ, mdt_quota_dqacq),
4384 static struct tgt_opc_slice mdt_common_slice[] = {
4386 .tos_opc_start = MDS_FIRST_OPC,
4387 .tos_opc_end = MDS_LAST_OPC,
4388 .tos_hs = mdt_tgt_handlers
4391 .tos_opc_start = OBD_FIRST_OPC,
4392 .tos_opc_end = OBD_LAST_OPC,
4393 .tos_hs = tgt_obd_handlers
4396 .tos_opc_start = LDLM_FIRST_OPC,
4397 .tos_opc_end = LDLM_LAST_OPC,
4398 .tos_hs = tgt_dlm_handlers
4401 .tos_opc_start = SEC_FIRST_OPC,
4402 .tos_opc_end = SEC_LAST_OPC,
4403 .tos_hs = mdt_sec_ctx_ops
4406 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
4407 .tos_opc_end = OUT_UPDATE_LAST_OPC,
4408 .tos_hs = tgt_out_handlers
4411 .tos_opc_start = FLD_FIRST_OPC,
4412 .tos_opc_end = FLD_LAST_OPC,
4413 .tos_hs = fld_handlers
4416 .tos_opc_start = SEQ_FIRST_OPC,
4417 .tos_opc_end = SEQ_LAST_OPC,
4418 .tos_hs = seq_handlers
4421 .tos_opc_start = QUOTA_DQACQ,
4422 .tos_opc_end = QUOTA_LAST_OPC,
4423 .tos_hs = mdt_quota_ops
4426 .tos_opc_start = LLOG_FIRST_OPC,
4427 .tos_opc_end = LLOG_LAST_OPC,
4428 .tos_hs = tgt_llog_handlers
4431 .tos_opc_start = LFSCK_FIRST_OPC,
4432 .tos_opc_end = LFSCK_LAST_OPC,
4433 .tos_hs = tgt_lfsck_handlers
4441 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4443 struct md_device *next = m->mdt_child;
4444 struct lu_device *d = &m->mdt_lu_dev;
4445 struct obd_device *obd = mdt2obd_dev(m);
4446 struct lfsck_stop stop;
4449 stop.ls_status = LS_PAUSED;
4451 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
4453 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
4454 target_recovery_fini(obd);
4455 ping_evictor_stop();
4457 if (m->mdt_opts.mo_coordinator)
4458 mdt_hsm_cdt_stop(m);
4460 mdt_hsm_cdt_fini(m);
4462 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
4463 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4465 if (m->mdt_namespace != NULL)
4466 ldlm_namespace_free_prior(m->mdt_namespace, NULL,
4467 d->ld_obd->obd_force);
4469 obd_exports_barrier(obd);
4470 obd_zombie_barrier();
4474 tgt_fini(env, &m->mdt_lut);
4475 mdt_fs_cleanup(env, m);
4476 upcall_cache_cleanup(m->mdt_identity_cache);
4477 m->mdt_identity_cache = NULL;
4479 if (m->mdt_namespace != NULL) {
4480 ldlm_namespace_free_post(m->mdt_namespace);
4481 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
4484 mdt_quota_fini(env, m);
4486 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
4488 mdt_seq_fini(env, m);
4489 mdt_fld_fini(env, m);
4494 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4496 LASSERT(atomic_read(&d->ld_ref) == 0);
4498 server_put_mount(mdt_obd_name(m), true);
4503 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4505 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4506 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4508 struct mdt_thread_info *info;
4509 struct obd_device *obd;
4510 const char *dev = lustre_cfg_string(cfg, 0);
4511 const char *num = lustre_cfg_string(cfg, 2);
4512 struct lustre_mount_info *lmi = NULL;
4513 struct lustre_sb_info *lsi;
4515 struct seq_server_site *ss_site;
4516 const char *identity_upcall = "NONE";
4517 struct md_device *next;
4523 lu_device_init(&m->mdt_lu_dev, ldt);
4525 * Environment (env) might be missing mdt_thread_key values at that
4526 * point, if device is allocated when mdt_thread_key is in QUIESCENT
4529 * Usually device allocation path doesn't use module key values, but
4530 * mdt has to do a lot of work here, so allocate key value.
4532 rc = lu_env_refill((struct lu_env *)env);
4536 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4537 LASSERT(info != NULL);
4539 obd = class_name2obd(dev);
4540 LASSERT(obd != NULL);
4542 m->mdt_max_mdsize = MAX_MD_SIZE; /* 4 stripes */
4543 m->mdt_opts.mo_evict_tgt_nids = 1;
4544 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
4546 /* default is coordinator off, it is started through conf_param
4548 m->mdt_opts.mo_coordinator = 0;
4550 lmi = server_get_mount(dev);
4552 CERROR("Cannot get mount info for %s!\n", dev);
4555 lsi = s2lsi(lmi->lmi_sb);
4556 /* CMD is supported only in IAM mode */
4558 node_id = simple_strtol(num, NULL, 10);
4559 obd->u.obt.obt_magic = OBT_MAGIC;
4560 if (lsi->lsi_lmd != NULL &&
4561 lsi->lsi_lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
4562 m->mdt_skip_lfsck = 1;
4565 m->mdt_squash.rsi_uid = 0;
4566 m->mdt_squash.rsi_gid = 0;
4567 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
4568 init_rwsem(&m->mdt_squash.rsi_sem);
4569 spin_lock_init(&m->mdt_osfs_lock);
4570 m->mdt_osfs_age = cfs_time_shift_64(-1000);
4571 m->mdt_enable_remote_dir = 0;
4572 m->mdt_enable_remote_dir_gid = 0;
4574 atomic_set(&m->mdt_mds_mds_conns, 0);
4575 atomic_set(&m->mdt_async_commit_count, 0);
4577 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
4578 m->mdt_lu_dev.ld_obd = obd;
4579 /* Set this lu_device to obd for error handling purposes. */
4580 obd->obd_lu_dev = &m->mdt_lu_dev;
4582 /* init the stack */
4583 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
4585 CERROR("%s: Can't init device stack, rc %d\n",
4586 mdt_obd_name(m), rc);
4591 ss_site = mdt_seq_site(m);
4592 s->ld_seq_site = ss_site;
4595 /* set server index */
4596 ss_site->ss_node_id = node_id;
4598 /* failover is the default
4599 * FIXME: we do not failout mds0/mgs, which may cause some problems.
4600 * assumed whose ss_node_id == 0 XXX
4602 obd->obd_replayable = 1;
4603 /* No connection accepted until configurations will finish */
4604 obd->obd_no_conn = 1;
4606 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
4607 char *str = lustre_cfg_string(cfg, 4);
4608 if (strchr(str, 'n')) {
4609 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
4610 obd->obd_replayable = 0;
4614 rc = mdt_fld_init(env, mdt_obd_name(m), m);
4616 GOTO(err_fini_stack, rc);
4618 rc = mdt_seq_init(env, m);
4620 GOTO(err_fini_fld, rc);
4622 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
4623 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
4624 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
4625 LDLM_NAMESPACE_SERVER,
4626 LDLM_NAMESPACE_GREEDY,
4628 if (m->mdt_namespace == NULL)
4629 GOTO(err_fini_seq, rc = -ENOMEM);
4631 m->mdt_namespace->ns_lvbp = m;
4632 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
4634 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
4635 /* set obd_namespace for compatibility with old code */
4636 obd->obd_namespace = m->mdt_namespace;
4638 rc = mdt_hsm_cdt_init(m);
4640 CERROR("%s: error initializing coordinator, rc %d\n",
4641 mdt_obd_name(m), rc);
4642 GOTO(err_free_ns, rc);
4645 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
4646 OBD_FAIL_MDS_ALL_REQUEST_NET,
4647 OBD_FAIL_MDS_ALL_REPLY_NET);
4649 GOTO(err_free_hsm, rc);
4651 rc = mdt_fs_setup(env, m, obd, lsi);
4655 tgt_adapt_sptlrpc_conf(&m->mdt_lut, 1);
4657 next = m->mdt_child;
4658 rc = next->md_ops->mdo_iocontrol(env, next, OBD_IOC_GET_MNTOPT, 0,
4661 GOTO(err_fs_cleanup, rc);
4663 if (mntopts & MNTOPT_USERXATTR)
4664 m->mdt_opts.mo_user_xattr = 1;
4666 m->mdt_opts.mo_user_xattr = 0;
4668 rc = next->md_ops->mdo_maxeasize_get(env, next, &m->mdt_max_ea_size);
4670 GOTO(err_fs_cleanup, rc);
4672 if (mntopts & MNTOPT_ACL)
4673 m->mdt_opts.mo_acl = 1;
4675 m->mdt_opts.mo_acl = 0;
4677 /* XXX: to support suppgid for ACL, we enable identity_upcall
4678 * by default, otherwise, maybe got unexpected -EACCESS. */
4679 if (m->mdt_opts.mo_acl)
4680 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
4682 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
4684 &mdt_identity_upcall_cache_ops);
4685 if (IS_ERR(m->mdt_identity_cache)) {
4686 rc = PTR_ERR(m->mdt_identity_cache);
4687 m->mdt_identity_cache = NULL;
4688 GOTO(err_fs_cleanup, rc);
4691 rc = mdt_procfs_init(m, dev);
4693 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
4694 GOTO(err_recovery, rc);
4697 rc = mdt_quota_init(env, m, cfg);
4699 GOTO(err_procfs, rc);
4701 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
4702 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
4703 "mdt_ldlm_client", m->mdt_ldlm_client);
4705 ping_evictor_start();
4707 /* recovery will be started upon mdt_prepare()
4708 * when the whole stack is complete and ready
4709 * to serve the requests */
4711 /* Reduce the initial timeout on an MDS because it doesn't need such
4712 * a long timeout as an OST does. Adaptive timeouts will adjust this
4713 * value appropriately. */
4714 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
4715 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
4721 target_recovery_fini(obd);
4722 upcall_cache_cleanup(m->mdt_identity_cache);
4723 m->mdt_identity_cache = NULL;
4725 mdt_fs_cleanup(env, m);
4727 tgt_fini(env, &m->mdt_lut);
4729 mdt_hsm_cdt_fini(m);
4731 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
4732 obd->obd_namespace = m->mdt_namespace = NULL;
4734 mdt_seq_fini(env, m);
4736 mdt_fld_fini(env, m);
4738 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4741 server_put_mount(dev, true);
4745 /* For interoperability, the left element is old parameter, the right one
4746 * is the new version of the parameter, if some parameter is deprecated,
4747 * the new version should be set as NULL. */
4748 static struct cfg_interop_param mdt_interop_param[] = {
4749 { "mdt.group_upcall", NULL },
4750 { "mdt.quota_type", NULL },
4751 { "mdd.quota_type", NULL },
4752 { "mdt.som", NULL },
4753 { "mdt.rootsquash", "mdt.root_squash" },
4754 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
4758 /* used by MGS to process specific configurations */
4759 static int mdt_process_config(const struct lu_env *env,
4760 struct lu_device *d, struct lustre_cfg *cfg)
4762 struct mdt_device *m = mdt_dev(d);
4763 struct md_device *md_next = m->mdt_child;
4764 struct lu_device *next = md2lu_dev(md_next);
4768 switch (cfg->lcfg_command) {
4770 struct obd_device *obd = d->ld_obd;
4772 /* For interoperability */
4773 struct cfg_interop_param *ptr = NULL;
4774 struct lustre_cfg *old_cfg = NULL;
4777 param = lustre_cfg_string(cfg, 1);
4778 if (param == NULL) {
4779 CERROR("param is empty\n");
4784 ptr = class_find_old_param(param, mdt_interop_param);
4786 if (ptr->new_param == NULL) {
4788 CWARN("For interoperability, skip this %s."
4789 " It is obsolete.\n", ptr->old_param);
4793 CWARN("Found old param %s, changed it to %s.\n",
4794 ptr->old_param, ptr->new_param);
4797 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
4804 rc = class_process_proc_param(PARAM_MDT, obd->obd_vars,
4806 if (rc > 0 || rc == -ENOSYS) {
4807 /* is it an HSM var ? */
4808 rc = class_process_proc_param(PARAM_HSM,
4809 hsm_cdt_get_proc_vars(),
4811 if (rc > 0 || rc == -ENOSYS)
4812 /* we don't understand; pass it on */
4813 rc = next->ld_ops->ldo_process_config(env, next,
4817 if (old_cfg != NULL)
4818 lustre_cfg_free(cfg);
4823 /* others are passed further */
4824 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4830 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
4831 const struct lu_object_header *hdr,
4832 struct lu_device *d)
4834 struct mdt_object *mo;
4838 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
4840 struct lu_object *o;
4841 struct lu_object_header *h;
4844 h = &mo->mot_header;
4845 lu_object_header_init(h);
4846 lu_object_init(o, h, d);
4847 lu_object_add_top(h, o);
4848 o->lo_ops = &mdt_obj_ops;
4849 spin_lock_init(&mo->mot_write_lock);
4850 mutex_init(&mo->mot_lov_mutex);
4851 init_rwsem(&mo->mot_open_sem);
4857 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
4858 const struct lu_object_conf *unused)
4860 struct mdt_device *d = mdt_dev(o->lo_dev);
4861 struct lu_device *under;
4862 struct lu_object *below;
4866 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
4867 PFID(lu_object_fid(o)));
4869 under = &d->mdt_child->md_lu_dev;
4870 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
4871 if (below != NULL) {
4872 lu_object_add(o, below);
4879 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
4881 struct mdt_object *mo = mdt_obj(o);
4882 struct lu_object_header *h;
4886 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
4887 PFID(lu_object_fid(o)));
4889 LASSERT(atomic_read(&mo->mot_open_count) == 0);
4890 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
4893 lu_object_header_fini(h);
4894 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
4899 static int mdt_object_print(const struct lu_env *env, void *cookie,
4900 lu_printer_t p, const struct lu_object *o)
4902 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
4904 return (*p)(env, cookie,
4905 LUSTRE_MDT_NAME"-object@%p(flags=%d, writecount=%d)",
4906 mdto, mdto->mot_flags, mdto->mot_write_count);
4909 static int mdt_prepare(const struct lu_env *env,
4910 struct lu_device *pdev,
4911 struct lu_device *cdev)
4913 struct mdt_device *mdt = mdt_dev(cdev);
4914 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
4915 struct obd_device *obd = cdev->ld_obd;
4922 rc = next->ld_ops->ldo_prepare(env, cdev, next);
4926 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
4930 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
4934 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
4935 /* The LFSCK instance is registered just now, so it must be there when
4936 * register the namespace to such instance. */
4937 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
4939 if (mdt->mdt_seq_site.ss_node_id == 0) {
4940 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
4941 &mdt->mdt_md_root_fid);
4946 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
4948 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
4949 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
4950 LASSERT(obd->obd_no_conn);
4951 spin_lock(&obd->obd_dev_lock);
4952 obd->obd_no_conn = 0;
4953 spin_unlock(&obd->obd_dev_lock);
4955 if (obd->obd_recovering == 0)
4956 mdt_postrecov(env, mdt);
4961 const struct lu_device_operations mdt_lu_ops = {
4962 .ldo_object_alloc = mdt_object_alloc,
4963 .ldo_process_config = mdt_process_config,
4964 .ldo_prepare = mdt_prepare,
4967 static const struct lu_object_operations mdt_obj_ops = {
4968 .loo_object_init = mdt_object_init,
4969 .loo_object_free = mdt_object_free,
4970 .loo_object_print = mdt_object_print
4973 static int mdt_obd_set_info_async(const struct lu_env *env,
4974 struct obd_export *exp,
4975 __u32 keylen, void *key,
4976 __u32 vallen, void *val,
4977 struct ptlrpc_request_set *set)
4983 if (KEY_IS(KEY_SPTLRPC_CONF)) {
4984 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp), 0);
4992 * Match client and server connection feature flags.
4994 * Compute the compatibility flags for a connection request based on
4995 * features mutually supported by client and server.
4997 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
4998 * must not be updated here, otherwise a partially initialized value may
4999 * be exposed. After the connection request is successfully processed,
5000 * the top-level MDT connect request handler atomically updates the export
5001 * connect flags from the obd_connect_data::ocd_connect_flags field of the
5002 * reply. \see mdt_connect().
5004 * \param exp the obd_export associated with this client/target pair
5005 * \param mdt the target device for the connection
5006 * \param data stores data for this connect request
5009 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
5010 * \retval -EBADE client and server feature requirements are incompatible
5012 static int mdt_connect_internal(struct obd_export *exp,
5013 struct mdt_device *mdt,
5014 struct obd_connect_data *data)
5016 LASSERT(data != NULL);
5018 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
5019 data->ocd_connect_flags2 &= MDT_CONNECT_SUPPORTED2;
5020 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
5022 if (!(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
5023 !(data->ocd_connect_flags & OBD_CONNECT_IBITS)) {
5024 CWARN("%s: client %s does not support ibits lock, either "
5025 "very old or an invalid client: flags "LPX64"\n",
5026 mdt_obd_name(mdt), exp->exp_client_uuid.uuid,
5027 data->ocd_connect_flags);
5031 if (!mdt->mdt_opts.mo_acl)
5032 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
5034 if (!mdt->mdt_opts.mo_user_xattr)
5035 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
5037 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
5038 data->ocd_brw_size = min(data->ocd_brw_size,
5039 (__u32)MD_MAX_BRW_SIZE);
5040 if (data->ocd_brw_size == 0) {
5041 CERROR("%s: cli %s/%p ocd_connect_flags: "LPX64
5042 " ocd_version: %x ocd_grant: %d "
5043 "ocd_index: %u ocd_brw_size is "
5044 "unexpectedly zero, network data "
5045 "corruption? Refusing connection of this"
5048 exp->exp_client_uuid.uuid,
5049 exp, data->ocd_connect_flags, data->ocd_version,
5050 data->ocd_grant, data->ocd_index);
5055 /* NB: Disregard the rule against updating
5056 * exp_connect_data.ocd_connect_flags in this case, since
5057 * tgt_client_new() needs to know if this is a lightweight
5058 * connection, and it is safe to expose this flag before
5059 * connection processing completes. */
5060 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
5061 spin_lock(&exp->exp_lock);
5062 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
5063 spin_unlock(&exp->exp_lock);
5066 data->ocd_version = LUSTRE_VERSION_CODE;
5068 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
5069 CWARN("%s: MDS requires FID support, but client not\n",
5074 if (OCD_HAS_FLAG(data, PINGLESS)) {
5075 if (ptlrpc_pinger_suppress_pings()) {
5076 spin_lock(&exp->exp_obd->obd_dev_lock);
5077 list_del_init(&exp->exp_obd_chain_timed);
5078 spin_unlock(&exp->exp_obd->obd_dev_lock);
5080 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
5084 data->ocd_max_easize = mdt->mdt_max_ea_size;
5086 /* NB: Disregard the rule against updating
5087 * exp_connect_data.ocd_connect_flags in this case, since
5088 * tgt_client_new() needs to know if this is client supports
5089 * multiple modify RPCs, and it is safe to expose this flag before
5090 * connection processing completes. */
5091 if (data->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS) {
5092 data->ocd_maxmodrpcs = max_mod_rpcs_per_client;
5093 spin_lock(&exp->exp_lock);
5094 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_MULTIMODRPCS;
5095 spin_unlock(&exp->exp_lock);
5101 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
5102 struct mdt_thread_info *info,
5103 struct mdt_file_data *mfd)
5105 struct lu_context ses;
5109 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
5114 lu_context_enter(&ses);
5116 mdt_ucred(info)->uc_valid = UCRED_OLD;
5117 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
5119 lu_context_exit(&ses);
5120 lu_context_fini(&ses);
5126 static int mdt_export_cleanup(struct obd_export *exp)
5128 struct list_head closing_list;
5129 struct mdt_export_data *med = &exp->exp_mdt_data;
5130 struct obd_device *obd = exp->exp_obd;
5131 struct mdt_device *mdt;
5132 struct mdt_thread_info *info;
5134 struct mdt_file_data *mfd, *n;
5138 INIT_LIST_HEAD(&closing_list);
5139 spin_lock(&med->med_open_lock);
5140 while (!list_empty(&med->med_open_head)) {
5141 struct list_head *tmp = med->med_open_head.next;
5142 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
5144 /* Remove mfd handle so it can't be found again.
5145 * We are consuming the mfd_list reference here. */
5146 class_handle_unhash(&mfd->mfd_handle);
5147 list_move_tail(&mfd->mfd_list, &closing_list);
5149 spin_unlock(&med->med_open_lock);
5150 mdt = mdt_dev(obd->obd_lu_dev);
5151 LASSERT(mdt != NULL);
5153 rc = lu_env_init(&env, LCT_MD_THREAD);
5157 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5158 LASSERT(info != NULL);
5159 memset(info, 0, sizeof *info);
5160 info->mti_env = &env;
5161 info->mti_mdt = mdt;
5162 info->mti_exp = exp;
5164 if (!list_empty(&closing_list)) {
5165 struct md_attr *ma = &info->mti_attr;
5167 /* Close any open files (which may also cause orphan
5169 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
5170 list_del_init(&mfd->mfd_list);
5171 ma->ma_need = ma->ma_valid = 0;
5173 /* This file is being closed due to an eviction, it
5174 * could have been modified and now dirty regarding to
5175 * HSM archive, check this!
5176 * The logic here is to mark a file dirty if there's a
5177 * chance it was dirtied before the client was evicted,
5178 * so that we don't have to wait for a release attempt
5179 * before finding out the file was actually dirty and
5180 * fail the release. Aggressively marking it dirty here
5181 * will cause the policy engine to attempt to
5182 * re-archive it; when rearchiving, we can compare the
5183 * current version to the HSM data_version and make the
5184 * archive request into a noop if it's not actually
5187 if (mfd->mfd_mode & FMODE_WRITE)
5188 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
5190 /* Don't unlink orphan on failover umount, LU-184 */
5191 if (exp->exp_flags & OBD_OPT_FAILOVER) {
5192 ma->ma_valid = MA_FLAGS;
5193 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
5195 mdt_mfd_close(info, mfd);
5198 info->mti_mdt = NULL;
5199 /* cleanup client slot early */
5200 /* Do not erase record for recoverable client. */
5201 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
5202 tgt_client_del(&env, exp);
5208 static inline void mdt_enable_slc(struct mdt_device *mdt)
5210 if (mdt->mdt_lut.lut_sync_lock_cancel == NEVER_SYNC_ON_CANCEL)
5211 mdt->mdt_lut.lut_sync_lock_cancel = BLOCKING_SYNC_ON_CANCEL;
5214 static inline void mdt_disable_slc(struct mdt_device *mdt)
5216 if (mdt->mdt_lut.lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL)
5217 mdt->mdt_lut.lut_sync_lock_cancel = NEVER_SYNC_ON_CANCEL;
5220 static int mdt_obd_disconnect(struct obd_export *exp)
5226 class_export_get(exp);
5228 if ((exp_connect_flags(exp) & OBD_CONNECT_MDS_MDS) &&
5229 !(exp_connect_flags(exp) & OBD_CONNECT_LIGHTWEIGHT)) {
5230 struct mdt_device *mdt = mdt_dev(exp->exp_obd->obd_lu_dev);
5232 if (atomic_dec_and_test(&mdt->mdt_mds_mds_conns))
5233 mdt_disable_slc(mdt);
5236 rc = server_disconnect_export(exp);
5238 CDEBUG(D_IOCTL, "server disconnect error: rc = %d\n", rc);
5240 rc = mdt_export_cleanup(exp);
5241 nodemap_del_member(exp);
5242 class_export_put(exp);
5246 /* mds_connect copy */
5247 static int mdt_obd_connect(const struct lu_env *env,
5248 struct obd_export **exp, struct obd_device *obd,
5249 struct obd_uuid *cluuid,
5250 struct obd_connect_data *data,
5253 struct obd_export *lexp;
5254 struct lustre_handle conn = { 0 };
5255 struct mdt_device *mdt;
5257 lnet_nid_t *client_nid = localdata;
5260 LASSERT(env != NULL);
5261 LASSERT(data != NULL);
5263 if (!exp || !obd || !cluuid)
5266 mdt = mdt_dev(obd->obd_lu_dev);
5268 if ((data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
5269 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
5270 atomic_inc(&mdt->mdt_mds_mds_conns);
5271 mdt_enable_slc(mdt);
5275 * first, check whether the stack is ready to handle requests
5276 * XXX: probably not very appropriate method is used now
5277 * at some point we should find a better one
5279 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) &&
5280 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) &&
5281 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
5282 rc = obd_get_info(env, mdt->mdt_child_exp,
5283 sizeof(KEY_OSP_CONNECTED),
5284 KEY_OSP_CONNECTED, NULL, NULL);
5287 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
5290 rc = class_connect(&conn, obd, cluuid);
5294 lexp = class_conn2export(&conn);
5295 LASSERT(lexp != NULL);
5297 rc = nodemap_add_member(*client_nid, lexp);
5298 if (rc != 0 && rc != -EEXIST)
5301 rc = mdt_connect_internal(lexp, mdt, data);
5303 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
5306 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5307 rc = tgt_client_new(env, lexp);
5309 mdt_export_stats_init(obd, lexp, localdata);
5313 class_disconnect(lexp);
5314 nodemap_del_member(lexp);
5318 /* Because we do not want this export to be evicted by pinger,
5319 * let's not add this export to the timed chain list. */
5320 if (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) {
5321 spin_lock(&lexp->exp_obd->obd_dev_lock);
5322 list_del_init(&lexp->exp_obd_chain_timed);
5323 spin_unlock(&lexp->exp_obd->obd_dev_lock);
5330 static int mdt_obd_reconnect(const struct lu_env *env,
5331 struct obd_export *exp, struct obd_device *obd,
5332 struct obd_uuid *cluuid,
5333 struct obd_connect_data *data,
5336 lnet_nid_t *client_nid = localdata;
5340 if (exp == NULL || obd == NULL || cluuid == NULL)
5343 rc = nodemap_add_member(*client_nid, exp);
5344 if (rc != 0 && rc != -EEXIST)
5347 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
5349 mdt_export_stats_init(obd, exp, localdata);
5351 nodemap_del_member(exp);
5356 /* FIXME: Can we avoid using these two interfaces? */
5357 static int mdt_init_export(struct obd_export *exp)
5359 struct mdt_export_data *med = &exp->exp_mdt_data;
5363 INIT_LIST_HEAD(&med->med_open_head);
5364 spin_lock_init(&med->med_open_lock);
5365 spin_lock(&exp->exp_lock);
5366 exp->exp_connecting = 1;
5367 spin_unlock(&exp->exp_lock);
5369 /* self-export doesn't need client data and ldlm initialization */
5370 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5371 &exp->exp_client_uuid)))
5374 rc = tgt_client_alloc(exp);
5378 rc = ldlm_init_export(exp);
5385 tgt_client_free(exp);
5387 CERROR("%s: Failed to initialize export: rc = %d\n",
5388 exp->exp_obd->obd_name, rc);
5392 static int mdt_destroy_export(struct obd_export *exp)
5396 target_destroy_export(exp);
5397 /* destroy can be called from failed obd_setup, so
5398 * checking uuid is safer than obd_self_export */
5399 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5400 &exp->exp_client_uuid)))
5403 ldlm_destroy_export(exp);
5404 tgt_client_free(exp);
5406 LASSERT(list_empty(&exp->exp_outstanding_replies));
5407 LASSERT(list_empty(&exp->exp_mdt_data.med_open_head));
5412 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
5413 struct linkea_data *ldata)
5417 LASSERT(ldata->ld_buf->lb_buf != NULL);
5419 if (!mdt_object_exists(mdt_obj))
5422 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5423 ldata->ld_buf, XATTR_NAME_LINK);
5424 if (rc == -ERANGE) {
5425 /* Buf was too small, figure out what we need. */
5426 lu_buf_free(ldata->ld_buf);
5427 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5428 ldata->ld_buf, XATTR_NAME_LINK);
5431 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
5432 if (ldata->ld_buf->lb_buf == NULL)
5434 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5435 ldata->ld_buf, XATTR_NAME_LINK);
5440 return linkea_init(ldata);
5444 * Given an MDT object, try to look up the full path to the object.
5445 * Part of the MDT layer implementation of lfs fid2path.
5447 * \param[in] info Per-thread common data shared by MDT level handlers.
5448 * \param[in] obj Object to do path lookup of
5449 * \param[in,out] fp User-provided struct to store path information
5450 * \param[in] root_fid Root FID of current path should reach
5452 * \retval 0 Lookup successful, path information stored in fp
5453 * \retval -EAGAIN Lookup failed, usually because object is being moved
5454 * \retval negative errno if there was a problem
5456 static int mdt_path_current(struct mdt_thread_info *info,
5457 struct mdt_object *obj,
5458 struct getinfo_fid2path *fp,
5459 struct lu_fid *root_fid)
5461 struct mdt_device *mdt = info->mti_mdt;
5462 struct mdt_object *mdt_obj;
5463 struct link_ea_header *leh;
5464 struct link_ea_entry *lee;
5465 struct lu_name *tmpname = &info->mti_name;
5466 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
5467 struct lu_buf *buf = &info->mti_big_buf;
5470 struct linkea_data ldata = { NULL };
5475 /* temp buffer for path element, the buffer will be finally freed
5476 * in mdt_thread_info_fini */
5477 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
5478 if (buf->lb_buf == NULL)
5482 ptr = fp->gf_u.gf_path + fp->gf_pathlen - 1;
5485 *tmpfid = fp->gf_fid = *mdt_object_fid(obj);
5487 while (!lu_fid_eq(root_fid, &fp->gf_fid)) {
5488 struct lu_buf lmv_buf;
5490 if (!lu_fid_eq(root_fid, &mdt->mdt_md_root_fid) &&
5491 lu_fid_eq(&mdt->mdt_md_root_fid, &fp->gf_fid))
5492 GOTO(out, rc = -ENOENT);
5494 mdt_obj = mdt_object_find(info->mti_env, mdt, tmpfid);
5495 if (IS_ERR(mdt_obj))
5496 GOTO(out, rc = PTR_ERR(mdt_obj));
5498 if (!mdt_object_exists(mdt_obj)) {
5499 mdt_object_put(info->mti_env, mdt_obj);
5500 GOTO(out, rc = -ENOENT);
5503 if (mdt_object_remote(mdt_obj)) {
5504 mdt_object_put(info->mti_env, mdt_obj);
5505 GOTO(remote_out, rc = -EREMOTE);
5508 rc = mdt_links_read(info, mdt_obj, &ldata);
5510 mdt_object_put(info->mti_env, mdt_obj);
5515 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
5516 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
5517 /* If set, use link #linkno for path lookup, otherwise use
5518 link #0. Only do this for the final path element. */
5519 if (first && fp->gf_linkno < leh->leh_reccount) {
5521 for (count = 0; count < fp->gf_linkno; count++) {
5522 lee = (struct link_ea_entry *)
5523 ((char *)lee + reclen);
5524 linkea_entry_unpack(lee, &reclen, tmpname,
5527 if (fp->gf_linkno < leh->leh_reccount - 1)
5528 /* indicate to user there are more links */
5532 lmv_buf.lb_buf = info->mti_xattr_buf;
5533 lmv_buf.lb_len = sizeof(info->mti_xattr_buf);
5534 /* Check if it is slave stripes */
5535 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5536 &lmv_buf, XATTR_NAME_LMV);
5537 mdt_object_put(info->mti_env, mdt_obj);
5539 union lmv_mds_md *lmm = lmv_buf.lb_buf;
5541 /* For slave stripes, get its master */
5542 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE) {
5543 fp->gf_fid = *tmpfid;
5546 } else if (rc < 0 && rc != -ENODATA) {
5552 /* Pack the name in the end of the buffer */
5553 ptr -= tmpname->ln_namelen;
5554 if (ptr - 1 <= fp->gf_u.gf_path)
5555 GOTO(out, rc = -EOVERFLOW);
5556 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
5559 /* keep the last resolved fid to the client, so the
5560 * client will build the left path on another MDT for
5562 fp->gf_fid = *tmpfid;
5568 ptr++; /* skip leading / */
5569 memmove(fp->gf_u.gf_path, ptr,
5570 fp->gf_u.gf_path + fp->gf_pathlen - ptr);
5577 * Given an MDT object, use mdt_path_current to get the path.
5578 * Essentially a wrapper to retry mdt_path_current a set number of times
5579 * if -EAGAIN is returned (usually because an object is being moved).
5581 * Part of the MDT layer implementation of lfs fid2path.
5583 * \param[in] info Per-thread common data shared by mdt level handlers.
5584 * \param[in] obj Object to do path lookup of
5585 * \param[in,out] fp User-provided struct for arguments and to store path
5588 * \retval 0 Lookup successful, path information stored in fp
5589 * \retval negative errno if there was a problem
5591 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
5592 struct getinfo_fid2path *fp, struct lu_fid *root_fid)
5594 struct mdt_device *mdt = info->mti_mdt;
5599 if (fp->gf_pathlen < 3)
5602 if (root_fid == NULL)
5603 root_fid = &mdt->mdt_md_root_fid;
5605 if (lu_fid_eq(root_fid, mdt_object_fid(obj))) {
5606 fp->gf_u.gf_path[0] = '\0';
5610 /* Retry multiple times in case file is being moved */
5611 while (tries-- && rc == -EAGAIN)
5612 rc = mdt_path_current(info, obj, fp, root_fid);
5618 * Get the full path of the provided FID, as of changelog record recno.
5620 * This checks sanity and looks up object for user provided FID
5621 * before calling the actual path lookup code.
5623 * Part of the MDT layer implementation of lfs fid2path.
5625 * \param[in] info Per-thread common data shared by mdt level handlers.
5626 * \param[in,out] fp User-provided struct for arguments and to store path
5629 * \retval 0 Lookup successful, path information and recno stored in fp
5630 * \retval -ENOENT, object does not exist
5631 * \retval negative errno if there was a problem
5633 static int mdt_fid2path(struct mdt_thread_info *info,
5634 struct lu_fid *root_fid,
5635 struct getinfo_fid2path *fp)
5637 struct mdt_device *mdt = info->mti_mdt;
5638 struct mdt_object *obj;
5642 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
5643 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
5645 if (!fid_is_sane(&fp->gf_fid))
5648 if (!fid_is_namespace_visible(&fp->gf_fid)) {
5649 CWARN("%s: "DFID" is invalid, sequence should be "
5650 ">= "LPX64"\n", mdt_obd_name(mdt),
5651 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
5655 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
5658 CDEBUG(D_IOCTL, "cannot find "DFID": rc = %d\n",
5659 PFID(&fp->gf_fid), rc);
5663 if (mdt_object_remote(obj))
5665 else if (!mdt_object_exists(obj))
5671 mdt_object_put(info->mti_env, obj);
5672 CDEBUG(D_IOCTL, "nonlocal object "DFID": rc = %d\n",
5673 PFID(&fp->gf_fid), rc);
5677 rc = mdt_path(info, obj, fp, root_fid);
5679 CDEBUG(D_INFO, "fid "DFID", path %s recno "LPX64" linkno %u\n",
5680 PFID(&fp->gf_fid), fp->gf_u.gf_path,
5681 fp->gf_recno, fp->gf_linkno);
5683 mdt_object_put(info->mti_env, obj);
5688 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key, int keylen,
5689 void *val, int vallen)
5691 struct getinfo_fid2path *fpout, *fpin;
5692 struct lu_fid *root_fid = NULL;
5695 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
5698 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
5699 lustre_swab_fid2path(fpin);
5701 memcpy(fpout, fpin, sizeof(*fpin));
5702 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
5705 if (keylen >= cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*fpin) +
5706 sizeof(struct lu_fid)) {
5707 /* client sent its root FID, which is normally fileset FID */
5708 root_fid = fpin->gf_u.gf_root_fid;
5709 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
5710 lustre_swab_lu_fid(root_fid);
5712 if (root_fid != NULL && !fid_is_sane(root_fid))
5716 rc = mdt_fid2path(info, root_fid, fpout);
5720 int mdt_get_info(struct tgt_session_info *tsi)
5730 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
5732 CDEBUG(D_IOCTL, "No GETINFO key\n");
5733 RETURN(err_serious(-EFAULT));
5735 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
5738 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
5739 if (vallen == NULL) {
5740 CDEBUG(D_IOCTL, "%s: cannot get RMF_GETINFO_VALLEN buffer\n",
5741 tgt_name(tsi->tsi_tgt));
5742 RETURN(err_serious(-EFAULT));
5745 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
5747 rc = req_capsule_server_pack(tsi->tsi_pill);
5749 RETURN(err_serious(rc));
5751 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
5752 if (valout == NULL) {
5753 CDEBUG(D_IOCTL, "%s: cannot get get-info RPC out buffer\n",
5754 tgt_name(tsi->tsi_tgt));
5755 RETURN(err_serious(-EFAULT));
5758 if (KEY_IS(KEY_FID2PATH)) {
5759 struct mdt_thread_info *info = tsi2mdt_info(tsi);
5761 rc = mdt_rpc_fid2path(info, key, keylen, valout, *vallen);
5762 mdt_thread_info_fini(info);
5769 /* Pass the ioc down */
5770 static int mdt_ioc_child(struct lu_env *env, struct mdt_device *mdt,
5771 unsigned int cmd, int len, void *data)
5773 struct lu_context ioctl_session;
5774 struct md_device *next = mdt->mdt_child;
5778 rc = lu_context_init(&ioctl_session, LCT_SERVER_SESSION);
5781 ioctl_session.lc_thread = (struct ptlrpc_thread *)current;
5782 lu_context_enter(&ioctl_session);
5783 env->le_ses = &ioctl_session;
5785 LASSERT(next->md_ops->mdo_iocontrol);
5786 rc = next->md_ops->mdo_iocontrol(env, next, cmd, len, data);
5788 lu_context_exit(&ioctl_session);
5789 lu_context_fini(&ioctl_session);
5793 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
5795 struct obd_ioctl_data *data = karg;
5798 struct mdt_object *obj;
5799 struct mdt_lock_handle *lh;
5803 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
5804 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
5807 fid = (struct lu_fid *)data->ioc_inlbuf1;
5809 if (!fid_is_sane(fid))
5812 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
5814 lh = &mti->mti_lh[MDT_LH_PARENT];
5815 mdt_lock_reg_init(lh, LCK_CR);
5817 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
5819 RETURN(PTR_ERR(obj));
5821 if (mdt_object_remote(obj)) {
5824 * before calling version get the correct MDS should be
5825 * fid, this is error to find remote object here
5827 CERROR("nonlocal object "DFID"\n", PFID(fid));
5828 } else if (!mdt_object_exists(obj)) {
5829 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
5832 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
5833 *(__u64 *)data->ioc_inlbuf2 = version;
5836 mdt_object_unlock_put(mti, obj, lh, 1);
5840 /* ioctls on obd dev */
5841 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
5842 void *karg, void __user *uarg)
5845 struct obd_device *obd = exp->exp_obd;
5846 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
5847 struct dt_device *dt = mdt->mdt_bottom;
5851 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
5852 rc = lu_env_init(&env, LCT_MD_THREAD);
5858 rc = mdt_device_sync(&env, mdt);
5860 case OBD_IOC_SET_READONLY:
5861 rc = dt_sync(&env, dt);
5863 rc = dt_ro(&env, dt);
5865 case OBD_IOC_ABORT_RECOVERY:
5866 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
5867 obd->obd_abort_recovery = 1;
5868 target_stop_recovery_thread(obd);
5871 case OBD_IOC_CHANGELOG_REG:
5872 case OBD_IOC_CHANGELOG_DEREG:
5873 case OBD_IOC_CHANGELOG_CLEAR:
5874 rc = mdt_ioc_child(&env, mdt, cmd, len, karg);
5876 case OBD_IOC_START_LFSCK: {
5877 struct md_device *next = mdt->mdt_child;
5878 struct obd_ioctl_data *data = karg;
5879 struct lfsck_start_param lsp;
5881 if (unlikely(data == NULL)) {
5886 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
5887 lsp.lsp_index_valid = 0;
5888 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
5891 case OBD_IOC_STOP_LFSCK: {
5892 struct md_device *next = mdt->mdt_child;
5893 struct obd_ioctl_data *data = karg;
5894 struct lfsck_stop stop;
5896 stop.ls_status = LS_STOPPED;
5897 /* Old lfsck utils may pass NULL @stop. */
5898 if (data->ioc_inlbuf1 == NULL)
5902 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
5904 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
5907 case OBD_IOC_QUERY_LFSCK: {
5908 struct md_device *next = mdt->mdt_child;
5909 struct obd_ioctl_data *data = karg;
5911 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0,
5915 case OBD_IOC_GET_OBJ_VERSION: {
5916 struct mdt_thread_info *mti;
5917 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5918 memset(mti, 0, sizeof *mti);
5919 mti->mti_env = &env;
5923 rc = mdt_ioc_version_get(mti, karg);
5926 case OBD_IOC_CATLOGLIST: {
5927 struct mdt_thread_info *mti;
5929 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5930 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
5931 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
5932 &mti->mti_tmp_fid1);
5937 CERROR("%s: Not supported cmd = %d, rc = %d\n",
5938 mdt_obd_name(mdt), cmd, rc);
5945 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
5947 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
5951 if (!mdt->mdt_skip_lfsck) {
5952 struct lfsck_start_param lsp;
5954 lsp.lsp_start = NULL;
5955 lsp.lsp_index_valid = 0;
5956 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
5957 OBD_IOC_START_LFSCK,
5959 if (rc != 0 && rc != -EALREADY)
5960 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
5961 mdt_obd_name(mdt), rc);
5964 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
5968 static int mdt_obd_postrecov(struct obd_device *obd)
5973 rc = lu_env_init(&env, LCT_MD_THREAD);
5976 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
5981 static struct obd_ops mdt_obd_device_ops = {
5982 .o_owner = THIS_MODULE,
5983 .o_set_info_async = mdt_obd_set_info_async,
5984 .o_connect = mdt_obd_connect,
5985 .o_reconnect = mdt_obd_reconnect,
5986 .o_disconnect = mdt_obd_disconnect,
5987 .o_init_export = mdt_init_export,
5988 .o_destroy_export = mdt_destroy_export,
5989 .o_iocontrol = mdt_iocontrol,
5990 .o_postrecov = mdt_obd_postrecov,
5993 static struct lu_device* mdt_device_fini(const struct lu_env *env,
5994 struct lu_device *d)
5996 struct mdt_device *m = mdt_dev(d);
6003 static struct lu_device *mdt_device_free(const struct lu_env *env,
6004 struct lu_device *d)
6006 struct mdt_device *m = mdt_dev(d);
6009 lu_device_fini(&m->mdt_lu_dev);
6015 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
6016 struct lu_device_type *t,
6017 struct lustre_cfg *cfg)
6019 struct lu_device *l;
6020 struct mdt_device *m;
6027 rc = mdt_init0(env, m, t, cfg);
6029 mdt_device_free(env, l);
6034 l = ERR_PTR(-ENOMEM);
6038 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
6039 LU_KEY_INIT(mdt, struct mdt_thread_info);
6041 static void mdt_key_fini(const struct lu_context *ctx,
6042 struct lu_context_key *key, void* data)
6044 struct mdt_thread_info *info = data;
6046 if (info->mti_big_lmm) {
6047 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
6048 info->mti_big_lmm = NULL;
6049 info->mti_big_lmmsize = 0;
6054 /* context key: mdt_thread_key */
6055 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
6057 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
6059 return lu_ucred(info->mti_env);
6062 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
6064 return lu_ucred_check(info->mti_env);
6068 * Enable/disable COS (Commit On Sharing).
6070 * Set/Clear the COS flag in mdt options.
6072 * \param mdt mdt device
6073 * \param val 0 disables COS, other values enable COS
6075 void mdt_enable_cos(struct mdt_device *mdt, int val)
6080 mdt->mdt_opts.mo_cos = !!val;
6081 rc = lu_env_init(&env, LCT_LOCAL);
6082 if (unlikely(rc != 0)) {
6083 CWARN("%s: lu_env initialization failed, cannot "
6084 "sync: rc = %d\n", mdt_obd_name(mdt), rc);
6087 mdt_device_sync(&env, mdt);
6092 * Check COS (Commit On Sharing) status.
6094 * Return COS flag status.
6096 * \param mdt mdt device
6098 int mdt_cos_is_enabled(struct mdt_device *mdt)
6100 return mdt->mdt_opts.mo_cos != 0;
6103 static struct lu_device_type_operations mdt_device_type_ops = {
6104 .ldto_device_alloc = mdt_device_alloc,
6105 .ldto_device_free = mdt_device_free,
6106 .ldto_device_fini = mdt_device_fini
6109 static struct lu_device_type mdt_device_type = {
6110 .ldt_tags = LU_DEVICE_MD,
6111 .ldt_name = LUSTRE_MDT_NAME,
6112 .ldt_ops = &mdt_device_type_ops,
6113 .ldt_ctx_tags = LCT_MD_THREAD
6116 static int __init mdt_init(void)
6120 CLASSERT(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") ==
6121 FID_NOBRACE_LEN + 1);
6122 CLASSERT(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") ==
6124 rc = lu_kmem_init(mdt_caches);
6128 rc = mds_mod_init();
6132 rc = class_register_type(&mdt_obd_device_ops, NULL, true, NULL,
6133 LUSTRE_MDT_NAME, &mdt_device_type);
6138 lu_kmem_fini(mdt_caches);
6145 static void __exit mdt_exit(void)
6147 class_unregister_type(LUSTRE_MDT_NAME);
6149 lu_kmem_fini(mdt_caches);
6152 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
6153 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
6154 MODULE_VERSION(LUSTRE_VERSION_STRING);
6155 MODULE_LICENSE("GPL");
6157 module_init(mdt_init);
6158 module_exit(mdt_exit);