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, 2013, 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 * struct OBD_{ALLOC,FREE}*()
55 #include <obd_support.h>
56 #include <lustre_ioctl.h>
57 /* struct ptlrpc_request */
58 #include <lustre_net.h>
59 /* struct obd_export */
60 #include <lustre_export.h>
61 /* struct obd_device */
64 #include <dt_object.h>
65 #include <lustre_mds.h>
66 #include <lustre_log.h>
67 #include "mdt_internal.h"
68 #include <lustre_acl.h>
69 #include <lustre_param.h>
70 #include <lustre_quota.h>
71 #include <lustre_lfsck.h>
73 mdl_mode_t mdt_mdl_lock_modes[] = {
74 [LCK_MINMODE] = MDL_MINMODE,
81 [LCK_GROUP] = MDL_GROUP
84 ldlm_mode_t mdt_dlm_lock_modes[] = {
85 [MDL_MINMODE] = LCK_MINMODE,
92 [MDL_GROUP] = LCK_GROUP
95 static struct mdt_device *mdt_dev(struct lu_device *d);
96 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
98 static const struct lu_object_operations mdt_obj_ops;
100 /* Slab for MDT object allocation */
101 static struct kmem_cache *mdt_object_kmem;
103 /* For HSM restore handles */
104 struct kmem_cache *mdt_hsm_cdt_kmem;
106 /* For HSM request handles */
107 struct kmem_cache *mdt_hsm_car_kmem;
109 static struct lu_kmem_descr mdt_caches[] = {
111 .ckd_cache = &mdt_object_kmem,
112 .ckd_name = "mdt_obj",
113 .ckd_size = sizeof(struct mdt_object)
116 .ckd_cache = &mdt_hsm_cdt_kmem,
117 .ckd_name = "mdt_cdt_restore_handle",
118 .ckd_size = sizeof(struct cdt_restore_handle)
121 .ckd_cache = &mdt_hsm_car_kmem,
122 .ckd_name = "mdt_cdt_agent_req",
123 .ckd_size = sizeof(struct cdt_agent_req)
130 int mdt_get_disposition(struct ldlm_reply *rep, int flag)
134 return (rep->lock_policy_res1 & flag);
137 void mdt_clear_disposition(struct mdt_thread_info *info,
138 struct ldlm_reply *rep, int flag)
141 info->mti_opdata &= ~flag;
142 tgt_opdata_clear(info->mti_env, flag);
145 rep->lock_policy_res1 &= ~flag;
148 void mdt_set_disposition(struct mdt_thread_info *info,
149 struct ldlm_reply *rep, int flag)
152 info->mti_opdata |= flag;
153 tgt_opdata_set(info->mti_env, flag);
156 rep->lock_policy_res1 |= flag;
159 void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm)
161 lh->mlh_pdo_hash = 0;
162 lh->mlh_reg_mode = lm;
163 lh->mlh_rreg_mode = lm;
164 lh->mlh_type = MDT_REG_LOCK;
167 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, ldlm_mode_t lock_mode,
168 const struct lu_name *lname)
170 lh->mlh_reg_mode = lock_mode;
171 lh->mlh_rreg_mode = lock_mode;
172 lh->mlh_type = MDT_PDO_LOCK;
174 if (lu_name_is_valid(lname)) {
175 lh->mlh_pdo_hash = full_name_hash(lname->ln_name,
177 /* XXX Workaround for LU-2856
179 * Zero is a valid return value of full_name_hash, but
180 * several users of mlh_pdo_hash assume a non-zero
181 * hash value. We therefore map zero onto an
182 * arbitrary, but consistent value (1) to avoid
183 * problems further down the road. */
184 if (unlikely(lh->mlh_pdo_hash == 0))
185 lh->mlh_pdo_hash = 1;
187 lh->mlh_pdo_hash = 0;
191 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
192 struct mdt_lock_handle *lh)
198 * Any dir access needs couple of locks:
200 * 1) on part of dir we gonna take lookup/modify;
202 * 2) on whole dir to protect it from concurrent splitting and/or to
203 * flush client's cache for readdir().
205 * so, for a given mode and object this routine decides what lock mode
206 * to use for lock #2:
208 * 1) if caller's gonna lookup in dir then we need to protect dir from
209 * being splitted only - LCK_CR
211 * 2) if caller's gonna modify dir then we need to protect dir from
212 * being splitted and to flush cache - LCK_CW
214 * 3) if caller's gonna modify dir and that dir seems ready for
215 * splitting then we need to protect it from any type of access
216 * (lookup/modify/split) - LCK_EX --bzzz
219 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
220 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
223 * Ask underlaying level its opinion about preferable PDO lock mode
224 * having access type passed as regular lock mode:
226 * - MDL_MINMODE means that lower layer does not want to specify lock
229 * - MDL_NL means that no PDO lock should be taken. This is used in some
230 * cases. Say, for non-splittable directories no need to use PDO locks
233 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
234 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
236 if (mode != MDL_MINMODE) {
237 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
240 * Lower layer does not want to specify locking mode. We do it
241 * our selves. No special protection is needed, just flush
242 * client's cache on modification and allow concurrent
245 switch (lh->mlh_reg_mode) {
247 lh->mlh_pdo_mode = LCK_EX;
250 lh->mlh_pdo_mode = LCK_CR;
253 lh->mlh_pdo_mode = LCK_CW;
256 CERROR("Not expected lock type (0x%x)\n",
257 (int)lh->mlh_reg_mode);
262 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
266 static int mdt_getstatus(struct tgt_session_info *tsi)
268 struct mdt_thread_info *info = tsi2mdt_info(tsi);
269 struct mdt_device *mdt = info->mti_mdt;
270 struct mdt_body *repbody;
275 rc = mdt_check_ucred(info);
277 GOTO(out, rc = err_serious(rc));
279 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK))
280 GOTO(out, rc = err_serious(-ENOMEM));
282 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
283 repbody->mbo_fid1 = mdt->mdt_md_root_fid;
284 repbody->mbo_valid |= OBD_MD_FLID;
286 if (tsi->tsi_tgt->lut_mds_capa &&
287 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
288 struct mdt_object *root;
289 struct lustre_capa *capa;
291 root = mdt_object_find(info->mti_env, mdt, &repbody->mbo_fid1);
293 GOTO(out, rc = PTR_ERR(root));
295 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
297 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
298 rc = mo_capa_get(info->mti_env, mdt_object_child(root), capa,
300 mdt_object_put(info->mti_env, root);
302 repbody->mbo_valid |= OBD_MD_FLMDSCAPA;
306 mdt_thread_info_fini(info);
310 static int mdt_statfs(struct tgt_session_info *tsi)
312 struct ptlrpc_request *req = tgt_ses_req(tsi);
313 struct mdt_thread_info *info = tsi2mdt_info(tsi);
314 struct md_device *next = info->mti_mdt->mdt_child;
315 struct ptlrpc_service_part *svcpt;
316 struct obd_statfs *osfs;
321 svcpt = req->rq_rqbd->rqbd_svcpt;
323 /* This will trigger a watchdog timeout */
324 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
325 (MDT_SERVICE_WATCHDOG_FACTOR *
326 at_get(&svcpt->scp_at_estimate)) + 1);
328 rc = mdt_check_ucred(info);
330 GOTO(out, rc = err_serious(rc));
332 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
333 GOTO(out, rc = err_serious(-ENOMEM));
335 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
337 GOTO(out, rc = -EPROTO);
339 /** statfs information are cached in the mdt_device */
340 if (cfs_time_before_64(info->mti_mdt->mdt_osfs_age,
341 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS))) {
342 /** statfs data is too old, get up-to-date one */
343 rc = next->md_ops->mdo_statfs(info->mti_env, next, osfs);
346 spin_lock(&info->mti_mdt->mdt_osfs_lock);
347 info->mti_mdt->mdt_osfs = *osfs;
348 info->mti_mdt->mdt_osfs_age = cfs_time_current_64();
349 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
351 /** use cached statfs data */
352 spin_lock(&info->mti_mdt->mdt_osfs_lock);
353 *osfs = info->mti_mdt->mdt_osfs;
354 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
358 mdt_counter_incr(req, LPROC_MDT_STATFS);
360 mdt_thread_info_fini(info);
365 * Pack SOM attributes into the reply.
366 * Call under a DLM UPDATE lock.
368 static void mdt_pack_size2body(struct mdt_thread_info *info,
369 struct mdt_object *mo)
372 struct md_attr *ma = &info->mti_attr;
374 LASSERT(ma->ma_attr.la_valid & LA_MODE);
375 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
377 /* Check if Size-on-MDS is supported, if this is a regular file,
378 * if SOM is enabled on the object and if SOM cache exists and valid.
379 * Otherwise do not pack Size-on-MDS attributes to the reply. */
380 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
381 !S_ISREG(ma->ma_attr.la_mode) ||
382 !mdt_object_is_som_enabled(mo) ||
383 !(ma->ma_valid & MA_SOM))
386 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
387 b->mbo_size = ma->ma_som->msd_size;
388 b->mbo_blocks = ma->ma_som->msd_blocks;
391 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
392 const struct lu_attr *attr, const struct lu_fid *fid)
394 struct md_attr *ma = &info->mti_attr;
396 LASSERT(ma->ma_valid & MA_INODE);
398 b->mbo_atime = attr->la_atime;
399 b->mbo_mtime = attr->la_mtime;
400 b->mbo_ctime = attr->la_ctime;
401 b->mbo_mode = attr->la_mode;
402 b->mbo_size = attr->la_size;
403 b->mbo_blocks = attr->la_blocks;
404 b->mbo_uid = attr->la_uid;
405 b->mbo_gid = attr->la_gid;
406 b->mbo_flags = attr->la_flags;
407 b->mbo_nlink = attr->la_nlink;
408 b->mbo_rdev = attr->la_rdev;
410 /* XXX should pack the reply body according to lu_valid */
411 b->mbo_valid |= OBD_MD_FLCTIME | OBD_MD_FLUID |
412 OBD_MD_FLGID | OBD_MD_FLTYPE |
413 OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLFLAGS |
414 OBD_MD_FLATIME | OBD_MD_FLMTIME ;
416 if (!S_ISREG(attr->la_mode)) {
417 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
418 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
419 /* means no objects are allocated on osts. */
420 LASSERT(!(ma->ma_valid & MA_LOV));
421 /* just ignore blocks occupied by extend attributes on MDS */
423 /* if no object is allocated on osts, the size on mds is valid.
425 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
426 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL &&
427 ma->ma_lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) {
428 /* A released file stores its size on MDS. */
429 /* But return 1 block for released file, unless tools like tar
430 * will consider it fully sparse. (LU-3864)
432 if (unlikely(b->mbo_size == 0))
436 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
441 b->mbo_valid |= OBD_MD_FLID;
442 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, size="LPU64"\n",
443 PFID(fid), b->mbo_nlink,
444 b->mbo_mode, b->mbo_size);
448 mdt_body_reverse_idmap(info, b);
450 if (fid != NULL && (b->mbo_valid & OBD_MD_FLSIZE))
451 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
452 PFID(fid), (unsigned long long)b->mbo_size);
455 static inline int mdt_body_has_lov(const struct lu_attr *la,
456 const struct mdt_body *body)
458 return (S_ISREG(la->la_mode) && (body->mbo_valid & OBD_MD_FLEASIZE)) ||
459 (S_ISDIR(la->la_mode) && (body->mbo_valid & OBD_MD_FLDIREA));
462 void mdt_client_compatibility(struct mdt_thread_info *info)
464 struct mdt_body *body;
465 struct ptlrpc_request *req = mdt_info_req(info);
466 struct obd_export *exp = req->rq_export;
467 struct md_attr *ma = &info->mti_attr;
468 struct lu_attr *la = &ma->ma_attr;
471 if (exp_connect_layout(exp))
472 /* the client can deal with 16-bit lmm_stripe_count */
475 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
477 if (!mdt_body_has_lov(la, body))
480 /* now we have a reply with a lov for a client not compatible with the
481 * layout lock so we have to clean the layout generation number */
482 if (S_ISREG(la->la_mode))
483 ma->ma_lmm->lmm_layout_gen = 0;
487 int mdt_attr_get_eabuf_size(struct mdt_thread_info *info, struct mdt_object *o)
489 const struct lu_env *env = info->mti_env;
492 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
501 /* Is it a directory? Let's check for the LMV as well */
502 if (S_ISDIR(lu_object_attr(&mdt_object_child(o)->mo_lu))) {
503 rc2 = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
507 rc2 = mo_xattr_get(env, mdt_object_child(o),
509 XATTR_NAME_DEFAULT_LMV);
511 if ((rc2 < 0 && rc2 != -ENODATA) || (rc2 > rc))
519 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
522 const struct lu_env *env = info->mti_env;
526 LASSERT(info->mti_big_lmm_used == 0);
527 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
531 /* big_lmm may need to be grown */
532 if (info->mti_big_lmmsize < rc) {
533 int size = size_roundup_power2(rc);
535 if (info->mti_big_lmmsize > 0) {
536 /* free old buffer */
537 LASSERT(info->mti_big_lmm);
538 OBD_FREE_LARGE(info->mti_big_lmm,
539 info->mti_big_lmmsize);
540 info->mti_big_lmm = NULL;
541 info->mti_big_lmmsize = 0;
544 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
545 if (info->mti_big_lmm == NULL)
547 info->mti_big_lmmsize = size;
549 LASSERT(info->mti_big_lmmsize >= rc);
551 info->mti_buf.lb_buf = info->mti_big_lmm;
552 info->mti_buf.lb_len = info->mti_big_lmmsize;
553 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
558 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
559 struct md_attr *ma, const char *name)
561 struct md_object *next = mdt_object_child(o);
562 struct lu_buf *buf = &info->mti_buf;
565 if (strcmp(name, XATTR_NAME_LOV) == 0) {
566 buf->lb_buf = ma->ma_lmm;
567 buf->lb_len = ma->ma_lmm_size;
568 LASSERT(!(ma->ma_valid & MA_LOV));
569 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
570 buf->lb_buf = ma->ma_lmv;
571 buf->lb_len = ma->ma_lmv_size;
572 LASSERT(!(ma->ma_valid & MA_LMV));
573 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
574 buf->lb_buf = ma->ma_lmv;
575 buf->lb_len = ma->ma_lmv_size;
576 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
581 rc = mo_xattr_get(info->mti_env, next, buf, name);
585 if (strcmp(name, XATTR_NAME_LOV) == 0) {
586 if (info->mti_big_lmm_used)
587 ma->ma_lmm = info->mti_big_lmm;
589 /* NOT return LOV EA with hole to old client. */
590 if (unlikely(le32_to_cpu(ma->ma_lmm->lmm_pattern) &
591 LOV_PATTERN_F_HOLE) &&
592 !(exp_connect_flags(info->mti_exp) &
593 OBD_CONNECT_LFSCK)) {
596 ma->ma_lmm_size = rc;
597 ma->ma_valid |= MA_LOV;
599 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
600 if (info->mti_big_lmm_used)
601 ma->ma_lmv = info->mti_big_lmm;
603 ma->ma_lmv_size = rc;
604 ma->ma_valid |= MA_LMV;
605 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
606 ma->ma_lmv_size = rc;
607 ma->ma_valid |= MA_LMV_DEF;
610 /* Update mdt_max_mdsize so all clients will be aware that */
611 if (info->mti_mdt->mdt_max_mdsize < rc)
612 info->mti_mdt->mdt_max_mdsize = rc;
615 } else if (rc == -ENODATA) {
618 } else if (rc == -ERANGE) {
619 /* Default LMV has fixed size, so it must be able to fit
620 * in the original buffer */
621 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
623 rc = mdt_big_xattr_get(info, o, name);
625 info->mti_big_lmm_used = 1;
633 static int mdt_attr_get_pfid(struct mdt_thread_info *info,
634 struct mdt_object *o, struct lu_fid *pfid)
636 struct lu_buf *buf = &info->mti_buf;
637 struct link_ea_header *leh;
638 struct link_ea_entry *lee;
642 buf->lb_buf = info->mti_big_lmm;
643 buf->lb_len = info->mti_big_lmmsize;
644 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
645 buf, XATTR_NAME_LINK);
646 /* ignore errors, MA_PFID won't be set and it is
647 * up to the caller to treat this as an error */
648 if (rc == -ERANGE || buf->lb_len == 0) {
649 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
650 buf->lb_buf = info->mti_big_lmm;
651 buf->lb_len = info->mti_big_lmmsize;
656 if (rc < sizeof(*leh)) {
657 CERROR("short LinkEA on "DFID": rc = %d\n",
658 PFID(mdt_object_fid(o)), rc);
662 leh = (struct link_ea_header *) buf->lb_buf;
663 lee = (struct link_ea_entry *)(leh + 1);
664 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
665 leh->leh_magic = LINK_EA_MAGIC;
666 leh->leh_reccount = __swab32(leh->leh_reccount);
667 leh->leh_len = __swab64(leh->leh_len);
669 if (leh->leh_magic != LINK_EA_MAGIC)
671 if (leh->leh_reccount == 0)
674 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
675 fid_be_to_cpu(pfid, pfid);
680 int mdt_attr_get_complex(struct mdt_thread_info *info,
681 struct mdt_object *o, struct md_attr *ma)
683 const struct lu_env *env = info->mti_env;
684 struct md_object *next = mdt_object_child(o);
685 struct lu_buf *buf = &info->mti_buf;
686 int need = ma->ma_need;
693 if (mdt_object_exists(o) == 0)
694 GOTO(out, rc = -ENOENT);
695 mode = lu_object_attr(&next->mo_lu);
697 if (need & MA_INODE) {
698 ma->ma_need = MA_INODE;
699 rc = mo_attr_get(env, next, ma);
702 ma->ma_valid |= MA_INODE;
705 if (need & MA_PFID) {
706 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
708 ma->ma_valid |= MA_PFID;
709 /* ignore this error, parent fid is not mandatory */
713 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
714 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
719 if (need & MA_LMV && S_ISDIR(mode)) {
720 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
725 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
726 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
731 if (need & MA_SOM && S_ISREG(mode)) {
732 buf->lb_buf = info->mti_xattr_buf;
733 buf->lb_len = sizeof(info->mti_xattr_buf);
734 CLASSERT(sizeof(struct som_attrs) <=
735 sizeof(info->mti_xattr_buf));
736 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_SOM);
737 rc2 = lustre_buf2som(info->mti_xattr_buf, rc2, ma->ma_som);
739 ma->ma_valid |= MA_SOM;
740 else if (rc2 < 0 && rc2 != -ENODATA)
744 if (need & MA_HSM && S_ISREG(mode)) {
745 buf->lb_buf = info->mti_xattr_buf;
746 buf->lb_len = sizeof(info->mti_xattr_buf);
747 CLASSERT(sizeof(struct hsm_attrs) <=
748 sizeof(info->mti_xattr_buf));
749 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
750 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
752 ma->ma_valid |= MA_HSM;
753 else if (rc2 < 0 && rc2 != -ENODATA)
757 #ifdef CONFIG_FS_POSIX_ACL
758 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
759 buf->lb_buf = ma->ma_acl;
760 buf->lb_len = ma->ma_acl_size;
761 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
763 ma->ma_acl_size = rc2;
764 ma->ma_valid |= MA_ACL_DEF;
765 } else if (rc2 == -ENODATA) {
774 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = "LPX64" ma_lmm=%p\n",
775 rc, ma->ma_valid, ma->ma_lmm);
779 static int mdt_getattr_internal(struct mdt_thread_info *info,
780 struct mdt_object *o, int ma_need)
782 struct md_object *next = mdt_object_child(o);
783 const struct mdt_body *reqbody = info->mti_body;
784 struct ptlrpc_request *req = mdt_info_req(info);
785 struct md_attr *ma = &info->mti_attr;
786 struct lu_attr *la = &ma->ma_attr;
787 struct req_capsule *pill = info->mti_pill;
788 const struct lu_env *env = info->mti_env;
789 struct mdt_body *repbody;
790 struct lu_buf *buffer = &info->mti_buf;
795 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
796 RETURN(err_serious(-ENOMEM));
798 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
802 if (mdt_object_remote(o)) {
803 /* This object is located on remote node.*/
804 /* Return -ENOTSUPP for old client */
805 if (!mdt_is_dne_client(req->rq_export))
806 GOTO(out, rc = -ENOTSUPP);
808 repbody->mbo_fid1 = *mdt_object_fid(o);
809 repbody->mbo_valid = OBD_MD_FLID | OBD_MD_MDS;
813 if (reqbody->mbo_eadatasize > 0) {
814 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
815 if (buffer->lb_buf == NULL)
816 GOTO(out, rc = -EPROTO);
817 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD,
820 buffer->lb_buf = NULL;
822 ma_need &= ~(MA_LOV | MA_LMV);
823 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
824 mdt_obd_name(info->mti_mdt),
825 req->rq_export->exp_client_uuid.uuid);
828 /* If it is dir object and client require MEA, then we got MEA */
829 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
830 (reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
831 /* Assumption: MDT_MD size is enough for lmv size. */
832 ma->ma_lmv = buffer->lb_buf;
833 ma->ma_lmv_size = buffer->lb_len;
834 ma->ma_need = MA_INODE;
835 if (ma->ma_lmv_size > 0) {
836 if (reqbody->mbo_valid & OBD_MD_MEA)
837 ma->ma_need |= MA_LMV;
838 else if (reqbody->mbo_valid & OBD_MD_DEFAULT_MEA)
839 ma->ma_need |= MA_LMV_DEF;
842 ma->ma_lmm = buffer->lb_buf;
843 ma->ma_lmm_size = buffer->lb_len;
844 ma->ma_need = MA_INODE | MA_HSM;
845 if (ma->ma_lmm_size > 0)
846 ma->ma_need |= MA_LOV;
849 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
850 reqbody->mbo_valid & OBD_MD_FLDIREA &&
851 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
852 /* get default stripe info for this dir. */
853 ma->ma_need |= MA_LOV_DEF;
855 ma->ma_need |= ma_need;
856 if (ma->ma_need & MA_SOM)
857 ma->ma_som = &info->mti_u.som.data;
859 rc = mdt_attr_get_complex(info, o, ma);
861 CERROR("%s: getattr error for "DFID": rc = %d\n",
862 mdt_obd_name(info->mti_mdt),
863 PFID(mdt_object_fid(o)), rc);
867 /* if file is released, check if a restore is running */
868 if ((ma->ma_valid & MA_HSM) && (ma->ma_hsm.mh_flags & HS_RELEASED) &&
869 mdt_hsm_restore_is_running(info, mdt_object_fid(o))) {
870 repbody->mbo_t_state = MS_RESTORE;
871 repbody->mbo_valid |= OBD_MD_TSTATE;
874 is_root = lu_fid_eq(mdt_object_fid(o), &info->mti_mdt->mdt_md_root_fid);
876 /* the Lustre protocol supposes to return default striping
877 * on the user-visible root if explicitly requested */
878 if ((ma->ma_valid & MA_LOV) == 0 && S_ISDIR(la->la_mode) &&
879 (ma->ma_need & MA_LOV_DEF && is_root) && ma->ma_need & MA_LOV) {
880 struct lu_fid rootfid;
881 struct mdt_object *root;
882 struct mdt_device *mdt = info->mti_mdt;
884 rc = dt_root_get(env, mdt->mdt_bottom, &rootfid);
887 root = mdt_object_find(env, mdt, &rootfid);
889 RETURN(PTR_ERR(root));
890 rc = mdt_stripe_get(info, root, ma, XATTR_NAME_LOV);
891 mdt_object_put(info->mti_env, root);
893 CERROR("%s: getattr error for "DFID": rc = %d\n",
894 mdt_obd_name(info->mti_mdt),
895 PFID(mdt_object_fid(o)), rc);
900 if (likely(ma->ma_valid & MA_INODE))
901 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
905 if (mdt_body_has_lov(la, reqbody)) {
906 if (ma->ma_valid & MA_LOV) {
907 LASSERT(ma->ma_lmm_size);
908 repbody->mbo_eadatasize = ma->ma_lmm_size;
909 if (S_ISDIR(la->la_mode))
910 repbody->mbo_valid |= OBD_MD_FLDIREA;
912 repbody->mbo_valid |= OBD_MD_FLEASIZE;
913 mdt_dump_lmm(D_INFO, ma->ma_lmm, repbody->mbo_valid);
915 if (ma->ma_valid & MA_LMV) {
916 /* Return -ENOTSUPP for old client */
917 if (!mdt_is_striped_client(req->rq_export))
920 LASSERT(S_ISDIR(la->la_mode));
921 mdt_dump_lmv(D_INFO, ma->ma_lmv);
922 repbody->mbo_eadatasize = ma->ma_lmv_size;
923 repbody->mbo_valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
925 if (ma->ma_valid & MA_LMV_DEF) {
926 /* Return -ENOTSUPP for old client */
927 if (!mdt_is_striped_client(req->rq_export))
929 LASSERT(S_ISDIR(la->la_mode));
930 repbody->mbo_eadatasize = ma->ma_lmv_size;
931 repbody->mbo_valid |= (OBD_MD_FLDIREA |
934 } else if (S_ISLNK(la->la_mode) &&
935 reqbody->mbo_valid & OBD_MD_LINKNAME) {
936 buffer->lb_buf = ma->ma_lmm;
937 /* eadatasize from client includes NULL-terminator, so
938 * there is no need to read it */
939 buffer->lb_len = reqbody->mbo_eadatasize - 1;
940 rc = mo_readlink(env, next, buffer);
941 if (unlikely(rc <= 0)) {
942 CERROR("%s: readlink failed for "DFID": rc = %d\n",
943 mdt_obd_name(info->mti_mdt),
944 PFID(mdt_object_fid(o)), rc);
947 int print_limit = min_t(int, PAGE_CACHE_SIZE - 128, rc);
949 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
951 repbody->mbo_valid |= OBD_MD_LINKNAME;
952 /* we need to report back size with NULL-terminator
953 * because client expects that */
954 repbody->mbo_eadatasize = rc + 1;
955 if (repbody->mbo_eadatasize != reqbody->mbo_eadatasize)
956 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
957 "on "DFID ", expected %d\n",
958 mdt_obd_name(info->mti_mdt),
959 rc, PFID(mdt_object_fid(o)),
960 reqbody->mbo_eadatasize - 1);
962 ((char *)ma->ma_lmm)[rc] = 0;
964 /* If the total CDEBUG() size is larger than a page, it
965 * will print a warning to the console, avoid this by
966 * printing just the last part of the symlink. */
967 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
968 print_limit < rc ? "..." : "", print_limit,
969 (char *)ma->ma_lmm + rc - print_limit, rc);
974 if (reqbody->mbo_valid & OBD_MD_FLMODEASIZE) {
975 repbody->mbo_max_cookiesize = 0;
976 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
977 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
978 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
979 "MAX_COOKIE to : %d:%d\n", repbody->mbo_max_mdsize,
980 repbody->mbo_max_cookiesize);
983 if (exp_connect_rmtclient(info->mti_exp) &&
984 reqbody->mbo_valid & OBD_MD_FLRMTPERM) {
985 void *buf = req_capsule_server_get(pill, &RMF_ACL);
987 /* mdt_getattr_lock only */
988 rc = mdt_pack_remote_perm(info, o, buf);
990 repbody->mbo_valid &= ~OBD_MD_FLRMTPERM;
991 repbody->mbo_aclsize = 0;
994 repbody->mbo_valid |= OBD_MD_FLRMTPERM;
995 repbody->mbo_aclsize = sizeof(struct mdt_remote_perm);
998 #ifdef CONFIG_FS_POSIX_ACL
999 else if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
1000 (reqbody->mbo_valid & OBD_MD_FLACL)) {
1001 buffer->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
1002 buffer->lb_len = req_capsule_get_size(pill,
1003 &RMF_ACL, RCL_SERVER);
1004 if (buffer->lb_len > 0) {
1005 rc = mo_xattr_get(env, next, buffer,
1006 XATTR_NAME_ACL_ACCESS);
1008 if (rc == -ENODATA) {
1009 repbody->mbo_aclsize = 0;
1010 repbody->mbo_valid |= OBD_MD_FLACL;
1012 } else if (rc == -EOPNOTSUPP) {
1015 CERROR("%s: unable to read "DFID
1017 mdt_obd_name(info->mti_mdt),
1018 PFID(mdt_object_fid(o)), rc);
1021 repbody->mbo_aclsize = rc;
1022 repbody->mbo_valid |= OBD_MD_FLACL;
1029 if (reqbody->mbo_valid & OBD_MD_FLMDSCAPA &&
1030 info->mti_mdt->mdt_lut.lut_mds_capa &&
1031 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
1032 struct lustre_capa *capa;
1034 capa = req_capsule_server_get(pill, &RMF_CAPA1);
1036 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
1037 rc = mo_capa_get(env, next, capa, 0);
1040 repbody->mbo_valid |= OBD_MD_FLMDSCAPA;
1045 mdt_counter_incr(req, LPROC_MDT_GETATTR);
1050 static int mdt_renew_capa(struct mdt_thread_info *info)
1052 struct mdt_object *obj = info->mti_object;
1053 struct mdt_body *body;
1054 struct lustre_capa *capa, *c;
1058 /* if object doesn't exist, or server has disabled capability,
1059 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
1062 if (!obj || !info->mti_mdt->mdt_lut.lut_oss_capa ||
1063 !(exp_connect_flags(info->mti_exp) & OBD_CONNECT_OSS_CAPA))
1066 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1067 LASSERT(body != NULL);
1069 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
1072 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
1076 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
1078 body->mbo_valid |= OBD_MD_FLOSSCAPA;
1082 static int mdt_getattr(struct tgt_session_info *tsi)
1084 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1085 struct mdt_object *obj = info->mti_object;
1086 struct req_capsule *pill = info->mti_pill;
1087 struct mdt_body *reqbody;
1088 struct mdt_body *repbody;
1092 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1095 if (reqbody->mbo_valid & OBD_MD_FLOSSCAPA) {
1096 rc = req_capsule_server_pack(pill);
1098 RETURN(err_serious(rc));
1099 rc = mdt_renew_capa(info);
1100 GOTO(out_shrink, rc);
1103 LASSERT(obj != NULL);
1104 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1106 /* Unlike intent case where we need to pre-fill out buffers early on
1107 * in intent policy for ldlm reasons, here we can have a much better
1108 * guess at EA size by just reading it from disk.
1109 * Exceptions are readdir and (missing) directory striping */
1111 if (reqbody->mbo_valid & OBD_MD_LINKNAME) {
1112 /* No easy way to know how long is the symlink, but it cannot
1113 * be more than PATH_MAX, so we allocate +1 */
1116 /* A special case for fs ROOT: getattr there might fetch
1117 * default EA for entire fs, not just for this dir!
1119 } else if (lu_fid_eq(mdt_object_fid(obj),
1120 &info->mti_mdt->mdt_md_root_fid) &&
1121 (reqbody->mbo_valid & OBD_MD_FLDIREA) &&
1122 (lustre_msg_get_opc(mdt_info_req(info)->rq_reqmsg) ==
1124 /* Should the default strping be bigger, mdt_fix_reply
1125 * will reallocate */
1126 rc = DEF_REP_MD_SIZE;
1128 /* Read the actual EA size from disk */
1129 rc = mdt_attr_get_eabuf_size(info, obj);
1133 GOTO(out, rc = err_serious(rc));
1135 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, rc);
1137 rc = req_capsule_server_pack(pill);
1138 if (unlikely(rc != 0))
1139 GOTO(out, rc = err_serious(rc));
1141 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1142 LASSERT(repbody != NULL);
1143 repbody->mbo_eadatasize = 0;
1144 repbody->mbo_aclsize = 0;
1146 if (reqbody->mbo_valid & OBD_MD_FLRMTPERM)
1147 rc = mdt_init_ucred(info, reqbody);
1149 rc = mdt_check_ucred(info);
1151 GOTO(out_shrink, rc);
1153 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1156 * Don't check capability at all, because rename might getattr for
1157 * remote obj, and at that time no capability is available.
1159 mdt_set_capainfo(info, 1, &reqbody->mbo_fid1, BYPASS_CAPA);
1160 rc = mdt_getattr_internal(info, obj, 0);
1161 if (reqbody->mbo_valid & OBD_MD_FLRMTPERM)
1162 mdt_exit_ucred(info);
1165 mdt_client_compatibility(info);
1166 rc2 = mdt_fix_reply(info);
1170 mdt_thread_info_fini(info);
1174 static int mdt_swap_layouts(struct tgt_session_info *tsi)
1176 struct mdt_thread_info *info;
1177 struct ptlrpc_request *req = tgt_ses_req(tsi);
1178 struct obd_export *exp = req->rq_export;
1179 struct mdt_object *o1, *o2, *o;
1180 struct mdt_lock_handle *lh1, *lh2;
1181 struct mdc_swap_layouts *msl;
1185 /* client does not support layout lock, so layout swaping
1187 * FIXME: there is a problem for old clients which don't support
1188 * layout lock yet. If those clients have already opened the file
1189 * they won't be notified at all so that old layout may still be
1190 * used to do IO. This can be fixed after file release is landed by
1191 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1192 if (!exp_connect_layout(exp))
1193 RETURN(-EOPNOTSUPP);
1195 info = tsi2mdt_info(tsi);
1197 if (info->mti_dlm_req != NULL)
1198 ldlm_request_cancel(req, info->mti_dlm_req, 0);
1200 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA1, RCL_CLIENT))
1201 mdt_set_capainfo(info, 0, &info->mti_body->mbo_fid1,
1202 req_capsule_client_get(info->mti_pill,
1205 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA2, RCL_CLIENT))
1206 mdt_set_capainfo(info, 1, &info->mti_body->mbo_fid2,
1207 req_capsule_client_get(info->mti_pill,
1210 o1 = info->mti_object;
1211 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1212 &info->mti_body->mbo_fid2);
1214 GOTO(out, rc = PTR_ERR(o));
1216 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1217 GOTO(put, rc = -ENOENT);
1219 rc = lu_fid_cmp(&info->mti_body->mbo_fid1, &info->mti_body->mbo_fid2);
1220 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1226 /* permission check. Make sure the calling process having permission
1227 * to write both files. */
1228 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1233 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1238 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1240 GOTO(put, rc = -EPROTO);
1242 lh1 = &info->mti_lh[MDT_LH_NEW];
1243 mdt_lock_reg_init(lh1, LCK_EX);
1244 lh2 = &info->mti_lh[MDT_LH_OLD];
1245 mdt_lock_reg_init(lh2, LCK_EX);
1247 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1248 MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK);
1252 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1253 MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK);
1257 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1258 mdt_object_child(o2), msl->msl_flags);
1261 mdt_object_unlock(info, o2, lh2, rc);
1263 mdt_object_unlock(info, o1, lh1, rc);
1265 mdt_object_put(info->mti_env, o);
1267 mdt_thread_info_fini(info);
1271 static int mdt_raw_lookup(struct mdt_thread_info *info,
1272 struct mdt_object *parent,
1273 const struct lu_name *lname,
1274 struct ldlm_reply *ldlm_rep)
1276 struct md_object *next = mdt_object_child(info->mti_object);
1277 const struct mdt_body *reqbody = info->mti_body;
1278 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1279 struct mdt_body *repbody;
1283 if (reqbody->mbo_valid != OBD_MD_FLID)
1286 LASSERT(!info->mti_cross_ref);
1288 /* Only got the fid of this obj by name */
1289 fid_zero(child_fid);
1290 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
1293 /* XXX is raw_lookup possible as intent operation? */
1296 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1299 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1301 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1304 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1305 repbody->mbo_fid1 = *child_fid;
1306 repbody->mbo_valid = OBD_MD_FLID;
1312 * UPDATE lock should be taken against parent, and be release before exit;
1313 * child_bits lock should be taken against child, and be returned back:
1314 * (1)normal request should release the child lock;
1315 * (2)intent request will grant the lock to client.
1317 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1318 struct mdt_lock_handle *lhc,
1320 struct ldlm_reply *ldlm_rep)
1322 struct ptlrpc_request *req = mdt_info_req(info);
1323 struct mdt_body *reqbody = NULL;
1324 struct mdt_object *parent = info->mti_object;
1325 struct mdt_object *child;
1326 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1327 struct lu_name *lname = NULL;
1328 struct mdt_lock_handle *lhp = NULL;
1329 struct ldlm_lock *lock;
1336 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1337 LASSERT(ergo(is_resent,
1338 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1343 if (info->mti_cross_ref) {
1344 /* Only getattr on the child. Parent is on another node. */
1345 mdt_set_disposition(info, ldlm_rep,
1346 DISP_LOOKUP_EXECD | DISP_LOOKUP_POS);
1348 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1350 PFID(mdt_object_fid(child)), ldlm_rep);
1352 rc = mdt_check_resent_lock(info, child, lhc);
1355 } else if (rc > 0) {
1356 mdt_lock_handle_init(lhc);
1357 mdt_lock_reg_init(lhc, LCK_PR);
1360 * Object's name is on another MDS, no lookup or layout
1361 * lock is needed here but update lock is.
1363 child_bits &= ~(MDS_INODELOCK_LOOKUP |
1364 MDS_INODELOCK_LAYOUT);
1365 child_bits |= MDS_INODELOCK_PERM | MDS_INODELOCK_UPDATE;
1367 rc = mdt_object_lock(info, child, lhc, child_bits,
1373 /* Finally, we can get attr for child. */
1374 if (!mdt_object_exists(child)) {
1375 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
1377 "remote object doesn't exist.\n");
1378 mdt_object_unlock(info, child, lhc, 1);
1382 mdt_set_capainfo(info, 0, mdt_object_fid(child), BYPASS_CAPA);
1383 rc = mdt_getattr_internal(info, child, 0);
1384 if (unlikely(rc != 0))
1385 mdt_object_unlock(info, child, lhc, 1);
1390 lname = &info->mti_name;
1391 mdt_name_unpack(info->mti_pill, &RMF_NAME, lname, MNF_FIX_ANON);
1393 if (lu_name_is_valid(lname)) {
1394 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", "
1395 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1396 PNAME(lname), ldlm_rep);
1398 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1399 if (unlikely(reqbody == NULL))
1400 RETURN(err_serious(-EPROTO));
1402 *child_fid = reqbody->mbo_fid2;
1404 if (unlikely(!fid_is_sane(child_fid)))
1405 RETURN(err_serious(-EINVAL));
1407 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1409 PFID(mdt_object_fid(parent)),
1410 PFID(&reqbody->mbo_fid2), ldlm_rep);
1413 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1415 if (unlikely(!mdt_object_exists(parent)) && lu_name_is_valid(lname)) {
1416 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1418 "Parent doesn't exist!\n");
1422 if (mdt_object_remote(parent)) {
1423 CERROR("%s: parent "DFID" is on remote target\n",
1424 mdt_obd_name(info->mti_mdt),
1425 PFID(mdt_object_fid(parent)));
1429 if (lu_name_is_valid(lname)) {
1430 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1437 /* step 1: lock parent only if parent is a directory */
1438 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
1439 lhp = &info->mti_lh[MDT_LH_PARENT];
1440 mdt_lock_pdo_init(lhp, LCK_PR, lname);
1441 rc = mdt_object_lock(info, parent, lhp,
1442 MDS_INODELOCK_UPDATE,
1444 if (unlikely(rc != 0))
1448 /* step 2: lookup child's fid by name */
1449 fid_zero(child_fid);
1450 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
1451 child_fid, &info->mti_spec);
1453 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1456 GOTO(out_parent, rc);
1459 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1462 *step 3: find the child object by fid & lock it.
1463 * regardless if it is local or remote.
1465 *Note: LU-3240 (commit 762f2114d282a98ebfa4dbbeea9298a8088ad24e)
1466 * set parent dir fid the same as child fid in getattr by fid case
1467 * we should not lu_object_find() the object again, could lead
1468 * to hung if there is a concurrent unlink destroyed the object.
1470 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
1471 mdt_object_get(info->mti_env, parent);
1474 child = mdt_object_find(info->mti_env, info->mti_mdt,
1478 if (unlikely(IS_ERR(child)))
1479 GOTO(out_parent, rc = PTR_ERR(child));
1481 rc = mdt_check_resent_lock(info, child, lhc);
1483 GOTO(out_child, rc);
1484 } else if (rc > 0) {
1485 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout*2);
1486 mdt_lock_handle_init(lhc);
1487 mdt_lock_reg_init(lhc, LCK_PR);
1490 if (!mdt_object_exists(child)) {
1491 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1493 "Object doesn't exist!\n");
1494 GOTO(out_child, rc = -ENOENT);
1497 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1498 mdt_object_exists(child) && !mdt_object_remote(child)) {
1499 struct md_attr *ma = &info->mti_attr;
1502 ma->ma_need = MA_INODE;
1503 rc = mdt_attr_get_complex(info, child, ma);
1504 if (unlikely(rc != 0))
1505 GOTO(out_child, rc);
1507 /* If the file has not been changed for some time, we
1508 * return not only a LOOKUP lock, but also an UPDATE
1509 * lock and this might save us RPC on later STAT. For
1510 * directories, it also let negative dentry cache start
1511 * working for this dir. */
1512 if (ma->ma_valid & MA_INODE &&
1513 ma->ma_attr.la_valid & LA_CTIME &&
1514 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1515 ma->ma_attr.la_ctime < cfs_time_current_sec())
1516 child_bits |= MDS_INODELOCK_UPDATE;
1519 /* layout lock must be granted in a best-effort way
1520 * for IT operations */
1521 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1522 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1523 exp_connect_layout(info->mti_exp) &&
1524 S_ISREG(lu_object_attr(&child->mot_obj)) &&
1525 !mdt_object_remote(child) && ldlm_rep != NULL) {
1526 /* try to grant layout lock for regular file. */
1532 child_bits |= MDS_INODELOCK_LAYOUT;
1533 /* try layout lock, it may fail to be granted due to
1534 * contention at LOOKUP or UPDATE */
1535 if (!mdt_object_lock_try(info, child, lhc, child_bits,
1537 child_bits &= ~MDS_INODELOCK_LAYOUT;
1538 LASSERT(child_bits != 0);
1539 rc = mdt_object_lock(info, child, lhc,
1540 child_bits, MDT_CROSS_LOCK);
1545 /* Do not enqueue the UPDATE lock from MDT(cross-MDT),
1546 * client will enqueue the lock to the remote MDT */
1547 if (mdt_object_remote(child))
1548 child_bits &= ~MDS_INODELOCK_UPDATE;
1549 rc = mdt_object_lock(info, child, lhc, child_bits,
1552 if (unlikely(rc != 0))
1553 GOTO(out_child, rc);
1556 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1557 /* Get MA_SOM attributes if update lock is given. */
1559 lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_UPDATE &&
1560 S_ISREG(lu_object_attr(&mdt_object_child(child)->mo_lu)))
1563 /* finally, we can get attr for child. */
1564 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1565 rc = mdt_getattr_internal(info, child, ma_need);
1566 if (unlikely(rc != 0)) {
1567 mdt_object_unlock(info, child, lhc, 1);
1569 /* Debugging code. */
1570 LDLM_DEBUG(lock, "Returning lock to client");
1571 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1572 &lock->l_resource->lr_name),
1573 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1574 PLDLMRES(lock->l_resource),
1575 PFID(mdt_object_fid(child)));
1576 if (mdt_object_exists(child) && !mdt_object_remote(child))
1577 mdt_pack_size2body(info, child);
1580 LDLM_LOCK_PUT(lock);
1584 mdt_object_put(info->mti_env, child);
1587 mdt_object_unlock(info, parent, lhp, 1);
1591 /* normal handler: should release the child lock */
1592 static int mdt_getattr_name(struct tgt_session_info *tsi)
1594 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1595 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1596 struct mdt_body *reqbody;
1597 struct mdt_body *repbody;
1601 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1602 LASSERT(reqbody != NULL);
1603 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1604 LASSERT(repbody != NULL);
1606 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1607 repbody->mbo_eadatasize = 0;
1608 repbody->mbo_aclsize = 0;
1610 rc = mdt_init_ucred(info, reqbody);
1612 GOTO(out_shrink, rc);
1614 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1615 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1616 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1617 lhc->mlh_reg_lh.cookie = 0;
1619 mdt_exit_ucred(info);
1622 mdt_client_compatibility(info);
1623 rc2 = mdt_fix_reply(info);
1626 mdt_thread_info_fini(info);
1630 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1631 void *karg, void *uarg);
1633 static int mdt_set_info(struct tgt_session_info *tsi)
1635 struct ptlrpc_request *req = tgt_ses_req(tsi);
1638 int keylen, vallen, rc = 0;
1642 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
1644 DEBUG_REQ(D_HA, req, "no set_info key");
1645 RETURN(err_serious(-EFAULT));
1648 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
1651 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
1653 DEBUG_REQ(D_HA, req, "no set_info val");
1654 RETURN(err_serious(-EFAULT));
1657 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
1660 /* Swab any part of val you need to here */
1661 if (KEY_IS(KEY_READ_ONLY)) {
1662 spin_lock(&req->rq_export->exp_lock);
1664 *exp_connect_flags_ptr(req->rq_export) |=
1667 *exp_connect_flags_ptr(req->rq_export) &=
1668 ~OBD_CONNECT_RDONLY;
1669 spin_unlock(&req->rq_export->exp_lock);
1670 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1671 struct changelog_setinfo *cs = val;
1673 if (vallen != sizeof(*cs)) {
1674 CERROR("%s: bad changelog_clear setinfo size %d\n",
1675 tgt_name(tsi->tsi_tgt), vallen);
1678 if (ptlrpc_req_need_swab(req)) {
1679 __swab64s(&cs->cs_recno);
1680 __swab32s(&cs->cs_id);
1683 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
1691 static int mdt_readpage(struct tgt_session_info *tsi)
1693 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
1694 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
1695 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1696 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
1697 struct mdt_body *repbody;
1703 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1704 RETURN(err_serious(-ENOMEM));
1706 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
1707 if (repbody == NULL || reqbody == NULL)
1708 RETURN(err_serious(-EFAULT));
1711 * prepare @rdpg before calling lower layers and transfer itself. Here
1712 * reqbody->size contains offset of where to start to read and
1713 * reqbody->nlink contains number bytes to read.
1715 rdpg->rp_hash = reqbody->mbo_size;
1716 if (rdpg->rp_hash != reqbody->mbo_size) {
1717 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1718 rdpg->rp_hash, reqbody->mbo_size);
1722 rdpg->rp_attrs = reqbody->mbo_mode;
1723 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
1724 rdpg->rp_attrs |= LUDA_64BITHASH;
1725 rdpg->rp_count = min_t(unsigned int, reqbody->mbo_nlink,
1726 exp_max_brw_size(tsi->tsi_exp));
1727 rdpg->rp_npages = (rdpg->rp_count + PAGE_CACHE_SIZE - 1) >>
1729 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1730 if (rdpg->rp_pages == NULL)
1733 for (i = 0; i < rdpg->rp_npages; ++i) {
1734 rdpg->rp_pages[i] = alloc_page(GFP_IOFS);
1735 if (rdpg->rp_pages[i] == NULL)
1736 GOTO(free_rdpg, rc = -ENOMEM);
1739 /* call lower layers to fill allocated pages with directory data */
1740 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
1742 GOTO(free_rdpg, rc);
1744 /* send pages to client */
1745 rc = tgt_sendpage(tsi, rdpg, rc);
1750 for (i = 0; i < rdpg->rp_npages; i++)
1751 if (rdpg->rp_pages[i] != NULL)
1752 __free_page(rdpg->rp_pages[i]);
1753 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1755 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1761 static int mdt_reint_internal(struct mdt_thread_info *info,
1762 struct mdt_lock_handle *lhc,
1765 struct req_capsule *pill = info->mti_pill;
1766 struct mdt_body *repbody;
1771 rc = mdt_reint_unpack(info, op);
1773 CERROR("Can't unpack reint, rc %d\n", rc);
1774 RETURN(err_serious(rc));
1777 /* for replay (no_create) lmm is not needed, client has it already */
1778 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1779 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1782 /* llog cookies are always 0, the field is kept for compatibility */
1783 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1784 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
1786 rc = req_capsule_server_pack(pill);
1788 CERROR("Can't pack response, rc %d\n", rc);
1789 RETURN(err_serious(rc));
1792 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1793 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1795 repbody->mbo_eadatasize = 0;
1796 repbody->mbo_aclsize = 0;
1799 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1801 /* for replay no cookkie / lmm need, because client have this already */
1802 if (info->mti_spec.no_create)
1803 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1804 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1806 rc = mdt_init_ucred_reint(info);
1808 GOTO(out_shrink, rc);
1810 rc = mdt_fix_attr_ucred(info, op);
1812 GOTO(out_ucred, rc = err_serious(rc));
1814 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1815 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
1816 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1817 GOTO(out_ucred, rc);
1819 rc = mdt_reint_rec(info, lhc);
1822 mdt_exit_ucred(info);
1824 mdt_client_compatibility(info);
1825 rc2 = mdt_fix_reply(info);
1831 static long mdt_reint_opcode(struct ptlrpc_request *req,
1832 const struct req_format **fmt)
1834 struct mdt_device *mdt;
1835 struct mdt_rec_reint *rec;
1838 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
1840 opc = rec->rr_opcode;
1841 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
1842 if (opc < REINT_MAX && fmt[opc] != NULL)
1843 req_capsule_extend(&req->rq_pill, fmt[opc]);
1845 mdt = mdt_exp2dev(req->rq_export);
1846 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
1847 " rc = %d\n", req->rq_export->exp_obd->obd_name,
1848 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
1849 opc = err_serious(-EFAULT);
1852 opc = err_serious(-EFAULT);
1857 static int mdt_reint(struct tgt_session_info *tsi)
1861 static const struct req_format *reint_fmts[REINT_MAX] = {
1862 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1863 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1864 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1865 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1866 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1867 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1868 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
1869 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
1870 [REINT_MIGRATE] = &RQF_MDS_REINT_RENAME
1875 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
1877 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1879 * No lock possible here from client to pass it to reint code
1882 rc = mdt_reint_internal(info, NULL, opc);
1883 mdt_thread_info_fini(info);
1888 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1892 /* this should sync the whole device */
1893 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1895 struct dt_device *dt = mdt->mdt_bottom;
1899 rc = dt->dd_ops->dt_sync(env, dt);
1903 /* this should sync this object */
1904 static int mdt_object_sync(struct mdt_thread_info *info)
1906 struct md_object *next;
1910 if (!mdt_object_exists(info->mti_object)) {
1911 CWARN("%s: non existing object "DFID": rc = %d\n",
1912 mdt_obd_name(info->mti_mdt),
1913 PFID(mdt_object_fid(info->mti_object)), -ESTALE);
1916 next = mdt_object_child(info->mti_object);
1917 rc = mo_object_sync(info->mti_env, next);
1922 static int mdt_sync(struct tgt_session_info *tsi)
1924 struct ptlrpc_request *req = tgt_ses_req(tsi);
1925 struct req_capsule *pill = tsi->tsi_pill;
1926 struct mdt_body *body;
1931 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1932 RETURN(err_serious(-ENOMEM));
1934 if (fid_seq(&tsi->tsi_mdt_body->mbo_fid1) == 0) {
1935 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
1937 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1939 /* sync an object */
1940 rc = mdt_object_sync(info);
1942 const struct lu_fid *fid;
1943 struct lu_attr *la = &info->mti_attr.ma_attr;
1945 info->mti_attr.ma_need = MA_INODE;
1946 info->mti_attr.ma_valid = 0;
1947 rc = mdt_attr_get_complex(info, info->mti_object,
1950 body = req_capsule_server_get(pill,
1952 fid = mdt_object_fid(info->mti_object);
1953 mdt_pack_attr2body(info, body, la, fid);
1956 mdt_thread_info_fini(info);
1959 mdt_counter_incr(req, LPROC_MDT_SYNC);
1965 * Handle quota control requests to consult current usage/limit, but also
1966 * to configure quota enforcement
1968 static int mdt_quotactl(struct tgt_session_info *tsi)
1970 struct obd_export *exp = tsi->tsi_exp;
1971 struct req_capsule *pill = tsi->tsi_pill;
1972 struct obd_quotactl *oqctl, *repoqc;
1974 struct mdt_device *mdt = mdt_exp2dev(exp);
1975 struct lu_device *qmt = mdt->mdt_qmt_dev;
1978 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1980 RETURN(err_serious(-EPROTO));
1982 rc = req_capsule_server_pack(pill);
1984 RETURN(err_serious(rc));
1986 switch (oqctl->qc_cmd) {
1988 case LUSTRE_Q_INVALIDATE:
1989 case LUSTRE_Q_FINVALIDATE:
1993 /* deprecated, not used any more */
1994 RETURN(-EOPNOTSUPP);
1995 /* master quotactl */
2001 RETURN(-EOPNOTSUPP);
2002 /* slave quotactl */
2007 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2011 /* map uid/gid for remote client */
2013 if (exp_connect_rmtclient(exp)) {
2014 struct lustre_idmap_table *idmap;
2016 idmap = exp->exp_mdt_data.med_idmap;
2018 if (unlikely(oqctl->qc_cmd != Q_GETQUOTA &&
2019 oqctl->qc_cmd != Q_GETINFO))
2022 if (oqctl->qc_type == USRQUOTA)
2023 id = lustre_idmap_lookup_uid(NULL, idmap, 0,
2025 else if (oqctl->qc_type == GRPQUOTA)
2026 id = lustre_idmap_lookup_gid(NULL, idmap, 0,
2031 if (id == CFS_IDMAP_NOTFOUND) {
2032 CDEBUG(D_QUOTA, "no mapping for id %u\n", oqctl->qc_id);
2037 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
2039 RETURN(err_serious(-EFAULT));
2041 if (oqctl->qc_id != id)
2042 swap(oqctl->qc_id, id);
2044 switch (oqctl->qc_cmd) {
2050 /* forward quotactl request to QMT */
2051 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
2056 /* slave quotactl */
2057 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
2062 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2066 if (oqctl->qc_id != id)
2067 swap(oqctl->qc_id, id);
2073 /** clone llog ctxt from child (mdd)
2074 * This allows remote llog (replicator) access.
2075 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2076 * context was originally set up, or we can handle them directly.
2077 * I choose the latter, but that means I need any llog
2078 * contexts set up by child to be accessable by the mdt. So we clone the
2079 * context into our context list here.
2081 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2084 struct md_device *next = mdt->mdt_child;
2085 struct llog_ctxt *ctxt;
2088 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2091 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2092 if (rc || ctxt == NULL) {
2096 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2098 CERROR("Can't set mdt ctxt %d\n", rc);
2103 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2104 struct mdt_device *mdt, int idx)
2106 struct llog_ctxt *ctxt;
2108 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2111 /* Put once for the get we just did, and once for the clone */
2112 llog_ctxt_put(ctxt);
2113 llog_ctxt_put(ctxt);
2118 * sec context handlers
2120 static int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
2124 rc = mdt_handle_idmap(tsi);
2126 struct ptlrpc_request *req = tgt_ses_req(tsi);
2129 opc = lustre_msg_get_opc(req->rq_reqmsg);
2130 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
2131 sptlrpc_svc_ctx_invalidate(req);
2134 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2140 * quota request handlers
2142 static int mdt_quota_dqacq(struct tgt_session_info *tsi)
2144 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2145 struct lu_device *qmt = mdt->mdt_qmt_dev;
2150 RETURN(err_serious(-EOPNOTSUPP));
2152 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
2156 struct mdt_object *mdt_object_new(const struct lu_env *env,
2157 struct mdt_device *d,
2158 const struct lu_fid *f)
2160 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2161 struct lu_object *o;
2162 struct mdt_object *m;
2165 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2166 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
2167 if (unlikely(IS_ERR(o)))
2168 m = (struct mdt_object *)o;
2174 struct mdt_object *mdt_object_find(const struct lu_env *env,
2175 struct mdt_device *d,
2176 const struct lu_fid *f)
2178 struct lu_object *o;
2179 struct mdt_object *m;
2182 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2183 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
2184 if (unlikely(IS_ERR(o)))
2185 m = (struct mdt_object *)o;
2193 * Asyncronous commit for mdt device.
2195 * Pass asynchonous commit call down the MDS stack.
2197 * \param env environment
2198 * \param mdt the mdt device
2200 static void mdt_device_commit_async(const struct lu_env *env,
2201 struct mdt_device *mdt)
2203 struct dt_device *dt = mdt->mdt_bottom;
2206 rc = dt->dd_ops->dt_commit_async(env, dt);
2207 if (unlikely(rc != 0))
2208 CWARN("%s: async commit start failed: rc = %d\n",
2209 mdt_obd_name(mdt), rc);
2213 * Mark the lock as "synchonous".
2215 * Mark the lock to deffer transaction commit to the unlock time.
2217 * \param lock the lock to mark as "synchonous"
2219 * \see mdt_is_lock_sync
2220 * \see mdt_save_lock
2222 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2224 lock->l_ast_data = (void*)1;
2228 * Check whehter the lock "synchonous" or not.
2230 * \param lock the lock to check
2231 * \retval 1 the lock is "synchonous"
2232 * \retval 0 the lock isn't "synchronous"
2234 * \see mdt_set_lock_sync
2235 * \see mdt_save_lock
2237 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2239 return lock->l_ast_data != NULL;
2243 * Blocking AST for mdt locks.
2245 * Starts transaction commit if in case of COS lock conflict or
2246 * deffers such a commit to the mdt_save_lock.
2248 * \param lock the lock which blocks a request or cancelling lock
2249 * \param desc unused
2250 * \param data unused
2251 * \param flag indicates whether this cancelling or blocking callback
2253 * \see ldlm_blocking_ast_nocheck
2255 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2256 void *data, int flag)
2258 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2259 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2263 if (flag == LDLM_CB_CANCELING)
2265 lock_res_and_lock(lock);
2266 if (lock->l_blocking_ast != mdt_blocking_ast) {
2267 unlock_res_and_lock(lock);
2270 if (mdt_cos_is_enabled(mdt) &&
2271 lock->l_req_mode & (LCK_PW | LCK_EX) &&
2272 lock->l_blocking_lock != NULL &&
2273 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
2274 mdt_set_lock_sync(lock);
2276 rc = ldlm_blocking_ast_nocheck(lock);
2278 /* There is no lock conflict if l_blocking_lock == NULL,
2279 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2280 * when the last reference to a local lock was released */
2281 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2284 rc = lu_env_init(&env, LCT_LOCAL);
2285 if (unlikely(rc != 0))
2286 CWARN("%s: lu_env initialization failed, cannot "
2287 "start asynchronous commit: rc = %d\n",
2290 mdt_device_commit_async(&env, mdt);
2296 /* Used for cross-MDT lock */
2297 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2298 void *data, int flag)
2300 struct lustre_handle lockh;
2304 case LDLM_CB_BLOCKING:
2305 ldlm_lock2handle(lock, &lockh);
2306 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
2308 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2312 case LDLM_CB_CANCELING:
2313 LDLM_DEBUG(lock, "Revoke remote lock\n");
2321 int mdt_check_resent_lock(struct mdt_thread_info *info,
2322 struct mdt_object *mo,
2323 struct mdt_lock_handle *lhc)
2325 /* the lock might already be gotten in ldlm_handle_enqueue() */
2326 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
2327 struct ptlrpc_request *req = mdt_info_req(info);
2328 struct ldlm_lock *lock;
2330 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
2331 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
2333 /* Lock is pinned by ldlm_handle_enqueue0() as it is
2334 * a resend case, however, it could be already destroyed
2335 * due to client eviction or a raced cancel RPC. */
2336 LDLM_DEBUG_NOLOCK("Invalid lock handle "LPX64"\n",
2337 lhc->mlh_reg_lh.cookie);
2341 if (!fid_res_name_eq(mdt_object_fid(mo),
2342 &lock->l_resource->lr_name)) {
2343 CWARN("%s: Although resent, but still not "
2344 "get child lock:"DFID"\n",
2345 info->mti_exp->exp_obd->obd_name,
2346 PFID(mdt_object_fid(mo)));
2347 LDLM_LOCK_PUT(lock);
2350 LDLM_LOCK_PUT(lock);
2356 int mdt_remote_object_lock(struct mdt_thread_info *mti,
2357 struct mdt_object *o, const struct lu_fid *fid,
2358 struct lustre_handle *lh, ldlm_mode_t mode,
2361 struct ldlm_enqueue_info *einfo = &mti->mti_einfo;
2362 ldlm_policy_data_t *policy = &mti->mti_policy;
2363 struct ldlm_res_id *res_id = &mti->mti_res_id;
2367 LASSERT(mdt_object_remote(o));
2369 LASSERT(ibits == MDS_INODELOCK_UPDATE);
2371 fid_build_reg_res_name(fid, res_id);
2373 memset(einfo, 0, sizeof(*einfo));
2374 einfo->ei_type = LDLM_IBITS;
2375 einfo->ei_mode = mode;
2376 einfo->ei_cb_bl = mdt_remote_blocking_ast;
2377 einfo->ei_cb_cp = ldlm_completion_ast;
2378 einfo->ei_enq_slave = 0;
2379 einfo->ei_res_id = res_id;
2381 memset(policy, 0, sizeof(*policy));
2382 policy->l_inodebits.bits = ibits;
2384 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
2389 static int mdt_object_local_lock(struct mdt_thread_info *info,
2390 struct mdt_object *o,
2391 struct mdt_lock_handle *lh, __u64 ibits,
2392 bool nonblock, int locality)
2394 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2395 ldlm_policy_data_t *policy = &info->mti_policy;
2396 struct ldlm_res_id *res_id = &info->mti_res_id;
2401 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2402 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2403 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2404 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2406 /* Only enqueue LOOKUP lock for remote object */
2407 if (mdt_object_remote(o))
2408 LASSERT(ibits == MDS_INODELOCK_LOOKUP);
2410 if (lh->mlh_type == MDT_PDO_LOCK) {
2411 /* check for exists after object is locked */
2412 if (mdt_object_exists(o) == 0) {
2413 /* Non-existent object shouldn't have PDO lock */
2416 /* Non-dir object shouldn't have PDO lock */
2417 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
2422 memset(policy, 0, sizeof(*policy));
2423 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2425 dlmflags = LDLM_FL_ATOMIC_CB;
2427 dlmflags |= LDLM_FL_BLOCK_NOWAIT;
2430 * Take PDO lock on whole directory and build correct @res_id for lock
2431 * on part of directory.
2433 if (lh->mlh_pdo_hash != 0) {
2434 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2435 mdt_lock_pdo_mode(info, o, lh);
2436 if (lh->mlh_pdo_mode != LCK_NL) {
2438 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2439 * is never going to be sent to client and we do not
2440 * want it slowed down due to possible cancels.
2442 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2443 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2444 policy, res_id, dlmflags,
2445 info->mti_exp == NULL ? NULL :
2446 &info->mti_exp->exp_handle.h_cookie);
2447 if (unlikely(rc != 0))
2448 GOTO(out_unlock, rc);
2452 * Finish res_id initializing by name hash marking part of
2453 * directory which is taking modification.
2455 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2458 policy->l_inodebits.bits = ibits;
2461 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2462 * going to be sent to client. If it is - mdt_intent_policy() path will
2463 * fix it up and turn FL_LOCAL flag off.
2465 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2466 res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
2467 info->mti_exp == NULL ? NULL :
2468 &info->mti_exp->exp_handle.h_cookie);
2471 mdt_object_unlock(info, o, lh, 1);
2472 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2473 lh->mlh_pdo_hash != 0 &&
2474 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
2475 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2481 mdt_object_lock_internal(struct mdt_thread_info *info, struct mdt_object *o,
2482 struct mdt_lock_handle *lh, __u64 ibits,
2483 bool nonblock, int locality)
2488 if (!mdt_object_remote(o))
2489 return mdt_object_local_lock(info, o, lh, ibits, nonblock,
2492 if (locality == MDT_LOCAL_LOCK) {
2493 CERROR("%s: try to get local lock for remote object"
2494 DFID".\n", mdt_obd_name(info->mti_mdt),
2495 PFID(mdt_object_fid(o)));
2499 /* XXX do not support PERM/LAYOUT/XATTR lock for remote object yet */
2500 ibits &= ~(MDS_INODELOCK_PERM | MDS_INODELOCK_LAYOUT |
2501 MDS_INODELOCK_XATTR);
2502 if (ibits & MDS_INODELOCK_UPDATE) {
2503 /* Sigh, PDO needs to enqueue 2 locks right now, but
2504 * enqueue RPC can only request 1 lock, to avoid extra
2505 * RPC, so it will instead enqueue EX lock for remote
2506 * object anyway XXX*/
2507 if (lh->mlh_type == MDT_PDO_LOCK &&
2508 lh->mlh_pdo_hash != 0) {
2509 CDEBUG(D_INFO, "%s: "DFID" convert PDO lock to"
2510 "EX lock.\n", mdt_obd_name(info->mti_mdt),
2511 PFID(mdt_object_fid(o)));
2512 lh->mlh_pdo_hash = 0;
2513 lh->mlh_rreg_mode = LCK_EX;
2514 lh->mlh_type = MDT_REG_LOCK;
2516 rc = mdt_remote_object_lock(info, o, mdt_object_fid(o),
2519 MDS_INODELOCK_UPDATE);
2524 /* Only enqueue LOOKUP lock for remote object */
2525 if (ibits & MDS_INODELOCK_LOOKUP) {
2526 rc = mdt_object_local_lock(info, o, lh,
2527 MDS_INODELOCK_LOOKUP,
2528 nonblock, locality);
2536 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2537 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2539 return mdt_object_lock_internal(info, o, lh, ibits, false, locality);
2542 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
2543 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2545 struct mdt_lock_handle tmp = *lh;
2548 rc = mdt_object_lock_internal(info, o, &tmp, ibits, true, locality);
2556 * Save a lock within request object.
2558 * Keep the lock referenced until whether client ACK or transaction
2559 * commit happens or release the lock immediately depending on input
2560 * parameters. If COS is ON, a write lock is converted to COS lock
2563 * \param info thead info object
2564 * \param h lock handle
2565 * \param mode lock mode
2566 * \param decref force immediate lock releasing
2569 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2570 ldlm_mode_t mode, int decref)
2574 if (lustre_handle_is_used(h)) {
2575 if (decref || !info->mti_has_trans ||
2576 !(mode & (LCK_PW | LCK_EX))){
2577 mdt_fid_unlock(h, mode);
2579 struct mdt_device *mdt = info->mti_mdt;
2580 struct ldlm_lock *lock = ldlm_handle2lock(h);
2581 struct ptlrpc_request *req = mdt_info_req(info);
2584 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2586 /* there is no request if mdt_object_unlock() is called
2587 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
2588 if (likely(req != NULL)) {
2589 CDEBUG(D_HA, "request = %p reply state = %p"
2590 " transno = "LPD64"\n", req,
2591 req->rq_reply_state, req->rq_transno);
2592 if (mdt_cos_is_enabled(mdt)) {
2594 ldlm_lock_downgrade(lock, LCK_COS);
2597 ptlrpc_save_lock(req, h, mode, no_ack);
2599 ldlm_lock_decref(h, mode);
2601 if (mdt_is_lock_sync(lock)) {
2602 CDEBUG(D_HA, "found sync-lock,"
2603 " async commit started\n");
2604 mdt_device_commit_async(info->mti_env,
2607 LDLM_LOCK_PUT(lock);
2616 * Unlock mdt object.
2618 * Immeditely release the regular lock and the PDO lock or save the
2619 * lock in reqeuest and keep them referenced until client ACK or
2620 * transaction commit.
2622 * \param info thread info object
2623 * \param o mdt object
2624 * \param lh mdt lock handle referencing regular and PDO locks
2625 * \param decref force immediate lock releasing
2627 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2628 struct mdt_lock_handle *lh, int decref)
2632 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2633 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2635 if (lustre_handle_is_used(&lh->mlh_rreg_lh))
2636 ldlm_lock_decref(&lh->mlh_rreg_lh, lh->mlh_rreg_mode);
2641 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2642 const struct lu_fid *f,
2643 struct mdt_lock_handle *lh,
2646 struct mdt_object *o;
2648 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2652 rc = mdt_object_lock(info, o, lh, ibits,
2655 mdt_object_put(info->mti_env, o);
2662 void mdt_object_unlock_put(struct mdt_thread_info * info,
2663 struct mdt_object * o,
2664 struct mdt_lock_handle *lh,
2667 mdt_object_unlock(info, o, lh, decref);
2668 mdt_object_put(info->mti_env, o);
2672 * Generic code handling requests that have struct mdt_body passed in:
2674 * - extract mdt_body from request and save it in @info, if present;
2676 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2679 * - if HABEO_CORPUS flag is set for this request type check whether object
2680 * actually exists on storage (lu_object_exists()).
2683 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2685 const struct mdt_body *body;
2686 struct mdt_object *obj;
2687 const struct lu_env *env;
2688 struct req_capsule *pill;
2692 env = info->mti_env;
2693 pill = info->mti_pill;
2695 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2699 if (!(body->mbo_valid & OBD_MD_FLID))
2702 if (!fid_is_sane(&body->mbo_fid1)) {
2703 CERROR("Invalid fid: "DFID"\n", PFID(&body->mbo_fid1));
2708 * Do not get size or any capa fields before we check that request
2709 * contains capa actually. There are some requests which do not, for
2710 * instance MDS_IS_SUBDIR.
2712 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2713 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2714 mdt_set_capainfo(info, 0, &body->mbo_fid1,
2715 req_capsule_client_get(pill, &RMF_CAPA1));
2717 obj = mdt_object_find(env, info->mti_mdt, &body->mbo_fid1);
2719 if ((flags & HABEO_CORPUS) &&
2720 !mdt_object_exists(obj)) {
2721 mdt_object_put(env, obj);
2722 /* for capability renew ENOENT will be handled in
2724 if (body->mbo_valid & OBD_MD_FLOSSCAPA)
2729 info->mti_object = obj;
2738 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2740 struct req_capsule *pill = info->mti_pill;
2744 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2745 rc = mdt_body_unpack(info, flags);
2749 if (rc == 0 && (flags & HABEO_REFERO)) {
2751 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2752 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2754 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2755 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
2758 rc = req_capsule_server_pack(pill);
2763 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2765 struct md_device *next = m->mdt_child;
2767 return next->md_ops->mdo_init_capa_ctxt(env, next,
2768 m->mdt_lut.lut_mds_capa,
2769 m->mdt_capa_timeout,
2774 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2776 lh->mlh_type = MDT_NUL_LOCK;
2777 lh->mlh_reg_lh.cookie = 0ull;
2778 lh->mlh_reg_mode = LCK_MINMODE;
2779 lh->mlh_pdo_lh.cookie = 0ull;
2780 lh->mlh_pdo_mode = LCK_MINMODE;
2781 lh->mlh_rreg_lh.cookie = 0ull;
2782 lh->mlh_rreg_mode = LCK_MINMODE;
2785 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2787 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2788 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2792 * Initialize fields of struct mdt_thread_info. Other fields are left in
2793 * uninitialized state, because it's too expensive to zero out whole
2794 * mdt_thread_info (> 1K) on each request arrival.
2796 void mdt_thread_info_init(struct ptlrpc_request *req,
2797 struct mdt_thread_info *info)
2801 info->mti_pill = &req->rq_pill;
2804 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2805 mdt_lock_handle_init(&info->mti_lh[i]);
2807 /* mdt device: it can be NULL while CONNECT */
2808 if (req->rq_export) {
2809 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2810 info->mti_exp = req->rq_export;
2812 info->mti_mdt = NULL;
2813 info->mti_env = req->rq_svc_thread->t_env;
2814 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2816 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2817 info->mti_big_buf = LU_BUF_NULL;
2818 info->mti_body = NULL;
2819 info->mti_object = NULL;
2820 info->mti_dlm_req = NULL;
2821 info->mti_has_trans = 0;
2822 info->mti_cross_ref = 0;
2823 info->mti_opdata = 0;
2824 info->mti_big_lmm_used = 0;
2826 info->mti_spec.no_create = 0;
2827 info->mti_spec.sp_rm_entry = 0;
2829 info->mti_spec.u.sp_ea.eadata = NULL;
2830 info->mti_spec.u.sp_ea.eadatalen = 0;
2833 void mdt_thread_info_fini(struct mdt_thread_info *info)
2837 if (info->mti_object != NULL) {
2838 mdt_object_put(info->mti_env, info->mti_object);
2839 info->mti_object = NULL;
2842 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2843 mdt_lock_handle_fini(&info->mti_lh[i]);
2844 info->mti_env = NULL;
2845 info->mti_pill = NULL;
2846 info->mti_exp = NULL;
2848 if (unlikely(info->mti_big_buf.lb_buf != NULL))
2849 lu_buf_free(&info->mti_big_buf);
2852 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
2854 struct mdt_thread_info *mti;
2855 struct lustre_capa *lc;
2857 mti = mdt_th_info(tsi->tsi_env);
2858 LASSERT(mti != NULL);
2860 mdt_thread_info_init(tgt_ses_req(tsi), mti);
2861 if (tsi->tsi_corpus != NULL) {
2862 struct req_capsule *pill = tsi->tsi_pill;
2864 mti->mti_object = mdt_obj(tsi->tsi_corpus);
2865 lu_object_get(tsi->tsi_corpus);
2868 * XXX: must be part of tgt_mdt_body_unpack but moved here
2869 * due to mdt_set_capainfo().
2871 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2872 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT) > 0) {
2873 lc = req_capsule_client_get(pill, &RMF_CAPA1);
2874 mdt_set_capainfo(mti, 0, &tsi->tsi_mdt_body->mbo_fid1,
2878 mti->mti_body = tsi->tsi_mdt_body;
2879 mti->mti_dlm_req = tsi->tsi_dlm_req;
2884 static int mdt_tgt_connect(struct tgt_session_info *tsi)
2886 struct ptlrpc_request *req = tgt_ses_req(tsi);
2891 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_DELAY_CONDITIONAL) &&
2893 tsi2mdt_info(tsi)->mti_mdt->mdt_seq_site.ss_node_id)
2894 schedule_timeout_and_set_state(TASK_UNINTERRUPTIBLE, HZ * 3);
2896 rc = tgt_connect(tsi);
2900 rc = mdt_init_idmap(tsi);
2905 obd_disconnect(class_export_get(req->rq_export));
2924 static int mdt_intent_getattr(enum mdt_it_code opcode,
2925 struct mdt_thread_info *info,
2926 struct ldlm_lock **,
2929 static int mdt_intent_getxattr(enum mdt_it_code opcode,
2930 struct mdt_thread_info *info,
2931 struct ldlm_lock **lockp,
2934 static int mdt_intent_layout(enum mdt_it_code opcode,
2935 struct mdt_thread_info *info,
2936 struct ldlm_lock **,
2938 static int mdt_intent_reint(enum mdt_it_code opcode,
2939 struct mdt_thread_info *info,
2940 struct ldlm_lock **,
2943 static struct mdt_it_flavor {
2944 const struct req_format *it_fmt;
2946 int (*it_act)(enum mdt_it_code ,
2947 struct mdt_thread_info *,
2948 struct ldlm_lock **,
2951 } mdt_it_flavor[] = {
2953 .it_fmt = &RQF_LDLM_INTENT,
2954 /*.it_flags = HABEO_REFERO,*/
2956 .it_act = mdt_intent_reint,
2957 .it_reint = REINT_OPEN
2960 .it_fmt = &RQF_LDLM_INTENT,
2962 * OCREAT is not a MUTABOR request as if the file
2964 * We do the extra check of OBD_CONNECT_RDONLY in
2965 * mdt_reint_open() when we really need to create
2969 .it_act = mdt_intent_reint,
2970 .it_reint = REINT_OPEN
2973 .it_fmt = &RQF_LDLM_INTENT,
2974 .it_flags = MUTABOR,
2975 .it_act = mdt_intent_reint,
2976 .it_reint = REINT_CREATE
2978 [MDT_IT_GETATTR] = {
2979 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2980 .it_flags = HABEO_REFERO,
2981 .it_act = mdt_intent_getattr
2983 [MDT_IT_READDIR] = {
2989 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2990 .it_flags = HABEO_REFERO,
2991 .it_act = mdt_intent_getattr
2994 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
2995 .it_flags = MUTABOR,
2997 .it_reint = REINT_UNLINK
3001 .it_flags = MUTABOR,
3004 [MDT_IT_GETXATTR] = {
3005 .it_fmt = &RQF_LDLM_INTENT_GETXATTR,
3006 .it_flags = HABEO_CORPUS,
3007 .it_act = mdt_intent_getxattr
3010 .it_fmt = &RQF_LDLM_INTENT_LAYOUT,
3012 .it_act = mdt_intent_layout
3017 mdt_intent_lock_replace(struct mdt_thread_info *info,
3018 struct ldlm_lock **lockp,
3019 struct mdt_lock_handle *lh,
3022 struct ptlrpc_request *req = mdt_info_req(info);
3023 struct ldlm_lock *lock = *lockp;
3024 struct ldlm_lock *new_lock;
3026 /* If possible resent found a lock, @lh is set to its handle */
3027 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3029 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3030 lh->mlh_reg_lh.cookie = 0;
3034 LASSERTF(new_lock != NULL,
3035 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
3038 * If we've already given this lock to a client once, then we should
3039 * have no readers or writers. Otherwise, we should have one reader
3040 * _or_ writer ref (which will be zeroed below) before returning the
3043 if (new_lock->l_export == req->rq_export) {
3044 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3046 LASSERT(new_lock->l_export == NULL);
3047 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3052 if (new_lock->l_export == req->rq_export) {
3054 * Already gave this to the client, which means that we
3055 * reconstructed a reply.
3057 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3060 LDLM_LOCK_RELEASE(new_lock);
3061 lh->mlh_reg_lh.cookie = 0;
3062 RETURN(ELDLM_LOCK_REPLACED);
3066 * Fixup the lock to be given to the client.
3068 lock_res_and_lock(new_lock);
3069 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3070 * possible blocking AST. */
3071 while (new_lock->l_readers > 0) {
3072 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3073 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3074 new_lock->l_readers--;
3076 while (new_lock->l_writers > 0) {
3077 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3078 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3079 new_lock->l_writers--;
3082 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3083 new_lock->l_blocking_ast = lock->l_blocking_ast;
3084 new_lock->l_completion_ast = lock->l_completion_ast;
3085 new_lock->l_remote_handle = lock->l_remote_handle;
3086 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3088 unlock_res_and_lock(new_lock);
3090 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3091 &new_lock->l_remote_handle,
3092 &new_lock->l_exp_hash);
3094 LDLM_LOCK_RELEASE(new_lock);
3095 lh->mlh_reg_lh.cookie = 0;
3097 RETURN(ELDLM_LOCK_REPLACED);
3100 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3101 struct ldlm_lock *new_lock,
3102 struct mdt_lock_handle *lh,
3105 struct ptlrpc_request *req = mdt_info_req(info);
3106 struct ldlm_request *dlmreq;
3108 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3111 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3113 /* Check if this is a resend case (MSG_RESENT is set on RPC) and a
3114 * lock was found by ldlm_handle_enqueue(); if so @lh must be
3116 if (flags & LDLM_FL_RESENT) {
3117 lh->mlh_reg_lh.cookie = new_lock->l_handle.h_cookie;
3118 lh->mlh_reg_mode = new_lock->l_granted_mode;
3120 LDLM_DEBUG(new_lock, "Restoring lock cookie");
3121 DEBUG_REQ(D_DLMTRACE, req, "restoring lock cookie "LPX64,
3122 lh->mlh_reg_lh.cookie);
3127 * If the xid matches, then we know this is a resent request, and allow
3128 * it. (It's probably an OPEN, for which we don't send a lock.
3130 if (req_xid_is_last(req))
3134 * This remote handle isn't enqueued, so we never received or processed
3135 * this request. Clear MSG_RESENT, because it can be handled like any
3136 * normal request now.
3138 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3140 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
3141 dlmreq->lock_handle[0].cookie);
3144 static int mdt_intent_getxattr(enum mdt_it_code opcode,
3145 struct mdt_thread_info *info,
3146 struct ldlm_lock **lockp,
3149 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3150 struct ldlm_reply *ldlm_rep = NULL;
3154 * Initialize lhc->mlh_reg_lh either from a previously granted lock
3155 * (for the resend case) or a new lock. Below we will use it to
3156 * replace the original lock.
3158 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3159 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3160 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
3161 rc = mdt_object_lock(info, info->mti_object, lhc,
3162 MDS_INODELOCK_XATTR,
3168 grc = mdt_getxattr(info);
3170 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3172 if (mdt_info_req(info)->rq_repmsg != NULL)
3173 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3174 if (ldlm_rep == NULL)
3175 RETURN(err_serious(-EFAULT));
3177 ldlm_rep->lock_policy_res2 = grc;
3182 static int mdt_intent_getattr(enum mdt_it_code opcode,
3183 struct mdt_thread_info *info,
3184 struct ldlm_lock **lockp,
3187 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3189 struct ldlm_reply *ldlm_rep;
3190 struct mdt_body *reqbody;
3191 struct mdt_body *repbody;
3195 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3198 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3201 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
3202 repbody->mbo_eadatasize = 0;
3203 repbody->mbo_aclsize = 0;
3207 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
3209 case MDT_IT_GETATTR:
3210 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
3214 CERROR("Unsupported intent (%d)\n", opcode);
3215 GOTO(out_shrink, rc = -EINVAL);
3218 rc = mdt_init_ucred(info, reqbody);
3220 GOTO(out_shrink, rc);
3222 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3223 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3225 /* Get lock from request for possible resent case. */
3226 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3228 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3229 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3231 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3232 ldlm_rep->lock_policy_res2 = 0;
3233 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3234 ldlm_rep->lock_policy_res2) {
3235 lhc->mlh_reg_lh.cookie = 0ull;
3236 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3239 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3242 mdt_exit_ucred(info);
3244 mdt_client_compatibility(info);
3245 rc2 = mdt_fix_reply(info);
3251 static int mdt_intent_layout(enum mdt_it_code opcode,
3252 struct mdt_thread_info *info,
3253 struct ldlm_lock **lockp,
3256 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_LAYOUT];
3257 struct layout_intent *layout;
3259 struct mdt_object *obj = NULL;
3263 if (opcode != MDT_IT_LAYOUT) {
3264 CERROR("%s: Unknown intent (%d)\n", mdt_obd_name(info->mti_mdt),
3269 fid = &info->mti_tmp_fid2;
3270 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
3272 /* Get lock from request for possible resent case. */
3273 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3275 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
3277 RETURN(PTR_ERR(obj));
3279 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
3280 /* get the length of lsm */
3281 rc = mdt_attr_get_eabuf_size(info, obj);
3283 mdt_object_put(info->mti_env, obj);
3287 if (rc > info->mti_mdt->mdt_max_mdsize)
3288 info->mti_mdt->mdt_max_mdsize = rc;
3291 mdt_object_put(info->mti_env, obj);
3293 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
3294 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER, rc);
3295 rc = req_capsule_server_pack(info->mti_pill);
3299 if (lustre_handle_is_used(&lhc->mlh_reg_lh))
3300 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3302 layout = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
3303 LASSERT(layout != NULL);
3304 if (layout->li_opc == LAYOUT_INTENT_ACCESS)
3305 /* return to normal/resent ldlm handling */
3308 CERROR("%s: Unsupported layout intent (%d)\n",
3309 mdt_obd_name(info->mti_mdt), layout->li_opc);
3313 static int mdt_intent_reint(enum mdt_it_code opcode,
3314 struct mdt_thread_info *info,
3315 struct ldlm_lock **lockp,
3318 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3319 struct ldlm_reply *rep = NULL;
3323 static const struct req_format *intent_fmts[REINT_MAX] = {
3324 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3325 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3330 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
3334 if (mdt_it_flavor[opcode].it_reint != opc) {
3335 CERROR("Reint code %ld doesn't match intent: %d\n",
3337 RETURN(err_serious(-EPROTO));
3340 /* Get lock from request for possible resent case. */
3341 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3343 rc = mdt_reint_internal(info, lhc, opc);
3345 /* Check whether the reply has been packed successfully. */
3346 if (mdt_info_req(info)->rq_repmsg != NULL)
3347 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3349 RETURN(err_serious(-EFAULT));
3351 /* MDC expects this in any case */
3353 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3355 /* the open lock or the lock for cross-ref object should be
3356 * returned to the client */
3357 if (rc == -MDT_EREMOTE_OPEN || mdt_get_disposition(rep, DISP_OPEN_LOCK)) {
3358 LASSERT(lustre_handle_is_used(&lhc->mlh_reg_lh));
3359 rep->lock_policy_res2 = 0;
3360 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3364 rep->lock_policy_res2 = clear_serious(rc);
3366 if (rep->lock_policy_res2 == -ENOENT &&
3367 mdt_get_disposition(rep, DISP_LOOKUP_NEG))
3368 rep->lock_policy_res2 = 0;
3370 if (rc == -ENOTCONN || rc == -ENODEV ||
3371 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3373 * If it is the disconnect error (ENODEV & ENOCONN), the error
3374 * will be returned by rq_status, and client at ptlrpc layer
3375 * will detect this, then disconnect, reconnect the import
3376 * immediately, instead of impacting the following the rpc.
3378 lhc->mlh_reg_lh.cookie = 0ull;
3382 * For other cases, the error will be returned by intent.
3383 * and client will retrieve the result from intent.
3386 * FIXME: when open lock is finished, that should be
3389 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3390 LASSERTF(rc == 0, "Error occurred but lock handle "
3391 "is still in use, rc = %d\n", rc);
3392 rep->lock_policy_res2 = 0;
3393 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3396 lhc->mlh_reg_lh.cookie = 0ull;
3397 RETURN(ELDLM_LOCK_ABORTED);
3402 static int mdt_intent_code(long itcode)
3410 case IT_OPEN|IT_CREAT:
3417 rc = MDT_IT_READDIR;
3420 rc = MDT_IT_GETATTR;
3432 rc = MDT_IT_GETXATTR;
3437 case IT_QUOTA_DQACQ:
3442 CERROR("Unknown intent opcode: %ld\n", itcode);
3449 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
3450 struct ldlm_lock **lockp, __u64 flags)
3452 struct req_capsule *pill = info->mti_pill;
3453 struct ptlrpc_request *req = mdt_info_req(info);
3454 struct mdt_it_flavor *flv;
3459 opc = mdt_intent_code(itopc);
3463 if (opc == MDT_IT_QUOTA) {
3464 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
3467 RETURN(-EOPNOTSUPP);
3469 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
3470 /* pass the request to quota master */
3471 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
3472 mdt_info_req(info), lockp,
3477 flv = &mdt_it_flavor[opc];
3478 if (flv->it_fmt != NULL)
3479 req_capsule_extend(pill, flv->it_fmt);
3481 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
3485 if (flv->it_flags & MUTABOR &&
3486 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
3489 if (flv->it_act != NULL) {
3490 struct ldlm_reply *rep;
3492 /* execute policy */
3493 rc = flv->it_act(opc, info, lockp, flags);
3495 /* Check whether the reply has been packed successfully. */
3496 if (req->rq_repmsg != NULL) {
3497 rep = req_capsule_server_get(info->mti_pill,
3499 rep->lock_policy_res2 =
3500 ptlrpc_status_hton(rep->lock_policy_res2);
3507 static int mdt_intent_policy(struct ldlm_namespace *ns,
3508 struct ldlm_lock **lockp, void *req_cookie,
3509 ldlm_mode_t mode, __u64 flags, void *data)
3511 struct tgt_session_info *tsi;
3512 struct mdt_thread_info *info;
3513 struct ptlrpc_request *req = req_cookie;
3514 struct ldlm_intent *it;
3515 struct req_capsule *pill;
3520 LASSERT(req != NULL);
3522 tsi = tgt_ses_info(req->rq_svc_thread->t_env);
3524 info = tsi2mdt_info(tsi);
3525 LASSERT(info != NULL);
3526 pill = info->mti_pill;
3527 LASSERT(pill->rc_req == req);
3529 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
3530 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
3531 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
3533 rc = mdt_intent_opc(it->opc, info, lockp, flags);
3537 /* Lock without inodebits makes no sense and will oops
3538 * later in ldlm. Let's check it now to see if we have
3539 * ibits corrupted somewhere in mdt_intent_opc().
3540 * The case for client miss to set ibits has been
3541 * processed by others. */
3542 LASSERT(ergo(info->mti_dlm_req->lock_desc.l_resource.\
3543 lr_type == LDLM_IBITS,
3544 info->mti_dlm_req->lock_desc.\
3545 l_policy_data.l_inodebits.bits != 0));
3547 rc = err_serious(-EFAULT);
3549 /* No intent was provided */
3550 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
3551 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
3552 rc = req_capsule_server_pack(pill);
3554 rc = err_serious(rc);
3556 mdt_thread_info_fini(info);
3560 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
3562 struct seq_server_site *ss = mdt_seq_site(mdt);
3564 if (ss->ss_node_id == 0)
3567 if (ss->ss_client_seq != NULL) {
3568 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
3569 ss->ss_client_seq->lcs_exp = NULL;
3572 if (ss->ss_server_fld != NULL) {
3573 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
3574 ss->ss_server_fld->lsf_control_exp = NULL;
3578 static void mdt_seq_fini_cli(struct mdt_device *mdt)
3580 struct seq_server_site *ss = mdt_seq_site(mdt);
3585 if (ss->ss_server_seq != NULL)
3586 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
3589 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
3591 mdt_seq_fini_cli(mdt);
3592 mdt_deregister_seq_exp(mdt);
3594 return seq_site_fini(env, mdt_seq_site(mdt));
3598 * It will retrieve its FLDB entries from MDT0, and it only happens
3599 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
3600 * and it needs to refresh FLDB from the MDT0.
3602 static int mdt_register_lwp_callback(void *data)
3605 struct mdt_device *mdt = data;
3606 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
3610 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
3612 if (!likely(fld->lsf_new))
3615 rc = lu_env_init(&env, LCT_MD_THREAD);
3617 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
3621 rc = fld_update_from_controller(&env, fld);
3623 CERROR("%s: cannot update controller: rc = %d\n",
3624 mdt_obd_name(mdt), rc);
3632 static int mdt_register_seq_exp(struct mdt_device *mdt)
3634 struct seq_server_site *ss = mdt_seq_site(mdt);
3635 char *lwp_name = NULL;
3638 if (ss->ss_node_id == 0)
3641 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
3642 if (lwp_name == NULL)
3643 GOTO(out_free, rc = -ENOMEM);
3645 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
3649 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
3654 rc = lustre_register_lwp_item(lwp_name,
3655 &ss->ss_server_fld->lsf_control_exp,
3656 mdt_register_lwp_callback, mdt);
3658 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
3659 ss->ss_client_seq->lcs_exp = NULL;
3663 if (lwp_name != NULL)
3664 OBD_FREE(lwp_name, MAX_OBD_NAME);
3670 * Init client sequence manager which is used by local MDS to talk to sequence
3671 * controller on remote node.
3673 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
3675 struct seq_server_site *ss = mdt_seq_site(mdt);
3680 /* check if this is adding the first MDC and controller is not yet
3682 OBD_ALLOC_PTR(ss->ss_client_seq);
3683 if (ss->ss_client_seq == NULL)
3686 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3687 if (prefix == NULL) {
3688 OBD_FREE_PTR(ss->ss_client_seq);
3689 ss->ss_client_seq = NULL;
3693 /* Note: seq_client_fini will be called in seq_site_fini */
3694 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
3695 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
3696 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
3698 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3700 OBD_FREE_PTR(ss->ss_client_seq);
3701 ss->ss_client_seq = NULL;
3705 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
3710 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
3712 struct seq_server_site *ss;
3716 ss = mdt_seq_site(mdt);
3717 /* init sequence controller server(MDT0) */
3718 if (ss->ss_node_id == 0) {
3719 OBD_ALLOC_PTR(ss->ss_control_seq);
3720 if (ss->ss_control_seq == NULL)
3723 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
3724 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
3727 GOTO(out_seq_fini, rc);
3730 /* Init normal sequence server */
3731 OBD_ALLOC_PTR(ss->ss_server_seq);
3732 if (ss->ss_server_seq == NULL)
3733 GOTO(out_seq_fini, rc = -ENOMEM);
3735 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
3736 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
3738 GOTO(out_seq_fini, rc);
3740 /* init seq client for seq server to talk to seq controller(MDT0) */
3741 rc = mdt_seq_init_cli(env, mdt);
3743 GOTO(out_seq_fini, rc);
3745 if (ss->ss_node_id != 0)
3746 /* register controler export through lwp */
3747 rc = mdt_register_seq_exp(mdt);
3752 mdt_seq_fini(env, mdt);
3760 static int mdt_fld_fini(const struct lu_env *env,
3761 struct mdt_device *m)
3763 struct seq_server_site *ss = mdt_seq_site(m);
3766 if (ss && ss->ss_server_fld) {
3767 fld_server_fini(env, ss->ss_server_fld);
3768 OBD_FREE_PTR(ss->ss_server_fld);
3769 ss->ss_server_fld = NULL;
3775 static int mdt_fld_init(const struct lu_env *env,
3777 struct mdt_device *m)
3779 struct seq_server_site *ss;
3783 ss = mdt_seq_site(m);
3785 OBD_ALLOC_PTR(ss->ss_server_fld);
3786 if (ss->ss_server_fld == NULL)
3787 RETURN(rc = -ENOMEM);
3789 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
3792 OBD_FREE_PTR(ss->ss_server_fld);
3793 ss->ss_server_fld = NULL;
3800 static void mdt_stack_pre_fini(const struct lu_env *env,
3801 struct mdt_device *m, struct lu_device *top)
3803 struct lustre_cfg_bufs *bufs;
3804 struct lustre_cfg *lcfg;
3805 struct mdt_thread_info *info;
3810 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3811 LASSERT(info != NULL);
3813 bufs = &info->mti_u.bufs;
3815 LASSERT(m->mdt_child_exp);
3816 LASSERT(m->mdt_child_exp->exp_obd);
3818 /* process cleanup, pass mdt obd name to get obd umount flags */
3819 /* XXX: this is needed because all layers are referenced by
3820 * objects (some of them are pinned by osd, for example *
3821 * the proper solution should be a model where object used
3822 * by osd only doesn't have mdt/mdd slices -bzzz */
3823 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
3824 lustre_cfg_bufs_set_string(bufs, 1, NULL);
3825 lcfg = lustre_cfg_new(LCFG_PRE_CLEANUP, bufs);
3827 CERROR("%s: cannot alloc lcfg\n", mdt_obd_name(m));
3830 top->ld_ops->ldo_process_config(env, top, lcfg);
3831 lustre_cfg_free(lcfg);
3835 static void mdt_stack_fini(const struct lu_env *env,
3836 struct mdt_device *m, struct lu_device *top)
3838 struct obd_device *obd = mdt2obd_dev(m);
3839 struct lustre_cfg_bufs *bufs;
3840 struct lustre_cfg *lcfg;
3841 struct mdt_thread_info *info;
3845 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3846 LASSERT(info != NULL);
3848 lu_dev_del_linkage(top->ld_site, top);
3850 lu_site_purge(env, top->ld_site, -1);
3852 bufs = &info->mti_u.bufs;
3853 /* process cleanup, pass mdt obd name to get obd umount flags */
3854 /* another purpose is to let all layers to release their objects */
3855 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
3860 lustre_cfg_bufs_set_string(bufs, 1, flags);
3861 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
3863 CERROR("Cannot alloc lcfg!\n");
3867 top->ld_ops->ldo_process_config(env, top, lcfg);
3868 lustre_cfg_free(lcfg);
3870 lu_site_purge(env, top->ld_site, -1);
3872 m->mdt_child = NULL;
3873 m->mdt_bottom = NULL;
3875 obd_disconnect(m->mdt_child_exp);
3876 m->mdt_child_exp = NULL;
3878 obd_disconnect(m->mdt_bottom_exp);
3879 m->mdt_child_exp = NULL;
3882 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
3883 const char *next, struct obd_export **exp)
3885 struct obd_connect_data *data = NULL;
3886 struct obd_device *obd;
3890 OBD_ALLOC_PTR(data);
3892 GOTO(out, rc = -ENOMEM);
3894 obd = class_name2obd(next);
3896 CERROR("%s: can't locate next device: %s\n",
3897 mdt_obd_name(m), next);
3898 GOTO(out, rc = -ENOTCONN);
3901 data->ocd_connect_flags = OBD_CONNECT_VERSION;
3902 data->ocd_version = LUSTRE_VERSION_CODE;
3904 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
3906 CERROR("%s: cannot connect to next dev %s (%d)\n",
3907 mdt_obd_name(m), next, rc);
3917 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
3918 struct lustre_cfg *cfg)
3920 char *dev = lustre_cfg_string(cfg, 0);
3921 int rc, name_size, uuid_size;
3922 char *name, *uuid, *p;
3923 struct lustre_cfg_bufs *bufs;
3924 struct lustre_cfg *lcfg;
3925 struct obd_device *obd;
3926 struct lustre_profile *lprof;
3927 struct lu_site *site;
3930 /* in 1.8 we had the only device in the stack - MDS.
3931 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
3932 * in 2.3 OSD is instantiated by obd_mount.c, so we need
3933 * to generate names and setup MDT, MDD. MDT will be using
3934 * generated name to connect to MDD. for MDD the next device
3935 * will be LOD with name taken from so called "profile" which
3936 * is generated by mount_option line
3938 * 1.8 MGS generates config. commands like this:
3939 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
3940 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
3941 * 2.0 MGS generates config. commands like this:
3942 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
3943 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
3944 * 3:lustre-MDT0000-mdtlov 4:f
3946 * we generate MDD name from MDT one, just replacing T with D
3948 * after all the preparations, the logical equivalent will be
3949 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
3950 * 3:lustre-MDT0000-mdtlov 4:f
3951 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
3952 * 3:lustre-MDD0000 4:f
3954 * notice we build the stack from down to top: MDD first, then MDT */
3956 name_size = MAX_OBD_NAME;
3957 uuid_size = MAX_OBD_NAME;
3959 OBD_ALLOC(name, name_size);
3960 OBD_ALLOC(uuid, uuid_size);
3961 if (name == NULL || uuid == NULL)
3962 GOTO(cleanup_mem, rc = -ENOMEM);
3964 OBD_ALLOC_PTR(bufs);
3966 GOTO(cleanup_mem, rc = -ENOMEM);
3969 p = strstr(name, "-MDT");
3971 GOTO(free_bufs, rc = -ENOMEM);
3974 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
3976 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
3977 if (lprof == NULL || lprof->lp_dt == NULL) {
3978 CERROR("can't find the profile: %s\n",
3979 lustre_cfg_string(cfg, 0));
3980 GOTO(free_bufs, rc = -EINVAL);
3983 lustre_cfg_bufs_reset(bufs, name);
3984 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
3985 lustre_cfg_bufs_set_string(bufs, 2, uuid);
3986 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
3988 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
3990 GOTO(free_bufs, rc = -ENOMEM);
3992 rc = class_attach(lcfg);
3994 GOTO(lcfg_cleanup, rc);
3996 obd = class_name2obd(name);
3998 CERROR("Can not find obd %s (%s in config)\n",
3999 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
4000 GOTO(lcfg_cleanup, rc = -EINVAL);
4003 lustre_cfg_free(lcfg);
4005 lustre_cfg_bufs_reset(bufs, name);
4006 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4007 lustre_cfg_bufs_set_string(bufs, 2, dev);
4008 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4010 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4012 rc = class_setup(obd, lcfg);
4014 GOTO(class_detach, rc);
4016 /* connect to MDD we just setup */
4017 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
4019 GOTO(class_detach, rc);
4021 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
4023 LASSERT(mdt_lu_site(mdt) == NULL);
4024 mdt->mdt_lu_dev.ld_site = site;
4025 site->ls_top_dev = &mdt->mdt_lu_dev;
4026 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
4028 /* now connect to bottom OSD */
4029 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
4030 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
4032 GOTO(class_detach, rc);
4034 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
4036 rc = lu_env_refill((struct lu_env *)env);
4038 CERROR("Failure to refill session: '%d'\n", rc);
4040 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
4045 class_detach(obd, lcfg);
4047 lustre_cfg_free(lcfg);
4052 OBD_FREE(name, name_size);
4054 OBD_FREE(uuid, uuid_size);
4058 /* setup quota master target on MDT0 */
4059 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
4060 struct lustre_cfg *cfg)
4062 struct obd_device *obd;
4063 char *dev = lustre_cfg_string(cfg, 0);
4064 char *qmtname, *uuid, *p;
4065 struct lustre_cfg_bufs *bufs;
4066 struct lustre_cfg *lcfg;
4067 struct lustre_profile *lprof;
4068 struct obd_connect_data *data;
4072 LASSERT(mdt->mdt_qmt_exp == NULL);
4073 LASSERT(mdt->mdt_qmt_dev == NULL);
4075 /* quota master is on MDT0 only for now */
4076 if (mdt->mdt_seq_site.ss_node_id != 0)
4079 /* MGS generates config commands which look as follows:
4080 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4081 * 3:lustre-MDT0000-mdtlov 4:f
4083 * We generate the QMT name from the MDT one, just replacing MD with QM
4084 * after all the preparations, the logical equivalent will be:
4085 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
4086 * 3:lustre-MDT0000-osd 4:f */
4087 OBD_ALLOC(qmtname, MAX_OBD_NAME);
4088 OBD_ALLOC(uuid, UUID_MAX);
4089 OBD_ALLOC_PTR(bufs);
4090 OBD_ALLOC_PTR(data);
4091 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
4092 GOTO(cleanup_mem, rc = -ENOMEM);
4094 strcpy(qmtname, dev);
4095 p = strstr(qmtname, "-MDT");
4097 GOTO(cleanup_mem, rc = -ENOMEM);
4098 /* replace MD with QM */
4102 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
4104 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4105 if (lprof == NULL || lprof->lp_dt == NULL) {
4106 CERROR("can't find profile for %s\n",
4107 lustre_cfg_string(cfg, 0));
4108 GOTO(cleanup_mem, rc = -EINVAL);
4111 lustre_cfg_bufs_reset(bufs, qmtname);
4112 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
4113 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4114 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4116 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
4118 GOTO(cleanup_mem, rc = -ENOMEM);
4120 rc = class_attach(lcfg);
4122 GOTO(lcfg_cleanup, rc);
4124 obd = class_name2obd(qmtname);
4126 CERROR("Can not find obd %s (%s in config)\n", qmtname,
4127 lustre_cfg_string(cfg, 0));
4128 GOTO(lcfg_cleanup, rc = -EINVAL);
4131 lustre_cfg_free(lcfg);
4133 lustre_cfg_bufs_reset(bufs, qmtname);
4134 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4135 lustre_cfg_bufs_set_string(bufs, 2, dev);
4137 /* for quota, the next device should be the OSD device */
4138 lustre_cfg_bufs_set_string(bufs, 3,
4139 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
4141 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4143 rc = class_setup(obd, lcfg);
4145 GOTO(class_detach, rc);
4147 mdt->mdt_qmt_dev = obd->obd_lu_dev;
4149 /* configure local quota objects */
4150 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
4154 GOTO(class_cleanup, rc);
4156 /* connect to quota master target */
4157 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4158 data->ocd_version = LUSTRE_VERSION_CODE;
4159 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
4162 CERROR("cannot connect to quota master device %s (%d)\n",
4164 GOTO(class_cleanup, rc);
4170 class_manual_cleanup(obd);
4171 mdt->mdt_qmt_dev = NULL;
4175 class_detach(obd, lcfg);
4177 lustre_cfg_free(lcfg);
4182 OBD_FREE(qmtname, MAX_OBD_NAME);
4184 OBD_FREE(uuid, UUID_MAX);
4190 /* Shutdown quota master target associated with mdt */
4191 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
4195 if (mdt->mdt_qmt_exp == NULL)
4197 LASSERT(mdt->mdt_qmt_dev != NULL);
4199 /* the qmt automatically shuts down when the mdt disconnects */
4200 obd_disconnect(mdt->mdt_qmt_exp);
4201 mdt->mdt_qmt_exp = NULL;
4202 mdt->mdt_qmt_dev = NULL;
4206 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
4207 * for now. This will be removed along with converting rest of MDT code
4208 * to use tgt_session_info */
4209 int mdt_tgt_getxattr(struct tgt_session_info *tsi)
4211 struct mdt_thread_info *info = tsi2mdt_info(tsi);
4214 rc = mdt_getxattr(info);
4216 mdt_thread_info_fini(info);
4220 static struct tgt_handler mdt_tgt_handlers[] = {
4221 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4222 0, MDS_CONNECT, mdt_tgt_connect,
4223 &RQF_CONNECT, LUSTRE_OBD_VERSION),
4224 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4225 0, MDS_DISCONNECT, tgt_disconnect,
4226 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
4227 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4228 HABEO_REFERO, MDS_SET_INFO, mdt_set_info,
4229 &RQF_OBD_SET_INFO, LUSTRE_MDS_VERSION),
4230 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
4231 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_GETSTATUS, mdt_getstatus),
4232 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETATTR, mdt_getattr),
4233 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_GETATTR_NAME,
4235 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETXATTR, mdt_tgt_getxattr),
4236 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_STATFS, mdt_statfs),
4237 TGT_MDT_HDL(0 | MUTABOR, MDS_REINT, mdt_reint),
4238 TGT_MDT_HDL(HABEO_CORPUS, MDS_CLOSE, mdt_close),
4239 TGT_MDT_HDL(HABEO_CORPUS, MDS_DONE_WRITING,
4241 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_READPAGE, mdt_readpage),
4242 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_SYNC, mdt_sync),
4243 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
4244 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_PROGRESS,
4246 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_REGISTER,
4247 mdt_hsm_ct_register),
4248 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_UNREGISTER,
4249 mdt_hsm_ct_unregister),
4250 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_STATE_GET,
4252 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_STATE_SET,
4254 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_ACTION, mdt_hsm_action),
4255 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_REQUEST,
4257 TGT_MDT_HDL(HABEO_CLAVIS | HABEO_CORPUS | HABEO_REFERO | MUTABOR,
4262 static struct tgt_handler mdt_sec_ctx_ops[] = {
4263 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
4264 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
4265 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
4268 static struct tgt_handler mdt_quota_ops[] = {
4269 TGT_QUOTA_HDL(HABEO_REFERO, QUOTA_DQACQ, mdt_quota_dqacq),
4272 static struct tgt_opc_slice mdt_common_slice[] = {
4274 .tos_opc_start = MDS_FIRST_OPC,
4275 .tos_opc_end = MDS_LAST_OPC,
4276 .tos_hs = mdt_tgt_handlers
4279 .tos_opc_start = OBD_FIRST_OPC,
4280 .tos_opc_end = OBD_LAST_OPC,
4281 .tos_hs = tgt_obd_handlers
4284 .tos_opc_start = LDLM_FIRST_OPC,
4285 .tos_opc_end = LDLM_LAST_OPC,
4286 .tos_hs = tgt_dlm_handlers
4289 .tos_opc_start = SEC_FIRST_OPC,
4290 .tos_opc_end = SEC_LAST_OPC,
4291 .tos_hs = mdt_sec_ctx_ops
4294 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
4295 .tos_opc_end = OUT_UPDATE_LAST_OPC,
4296 .tos_hs = tgt_out_handlers
4299 .tos_opc_start = FLD_FIRST_OPC,
4300 .tos_opc_end = FLD_LAST_OPC,
4301 .tos_hs = fld_handlers
4304 .tos_opc_start = SEQ_FIRST_OPC,
4305 .tos_opc_end = SEQ_LAST_OPC,
4306 .tos_hs = seq_handlers
4309 .tos_opc_start = QUOTA_DQACQ,
4310 .tos_opc_end = QUOTA_LAST_OPC,
4311 .tos_hs = mdt_quota_ops
4314 .tos_opc_start = LLOG_FIRST_OPC,
4315 .tos_opc_end = LLOG_LAST_OPC,
4316 .tos_hs = tgt_llog_handlers
4319 .tos_opc_start = LFSCK_FIRST_OPC,
4320 .tos_opc_end = LFSCK_LAST_OPC,
4321 .tos_hs = tgt_lfsck_handlers
4329 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4331 struct md_device *next = m->mdt_child;
4332 struct lu_device *d = &m->mdt_lu_dev;
4333 struct obd_device *obd = mdt2obd_dev(m);
4334 struct lfsck_stop stop;
4337 stop.ls_status = LS_PAUSED;
4339 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
4341 target_recovery_fini(obd);
4342 ping_evictor_stop();
4343 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
4345 if (m->mdt_opts.mo_coordinator)
4346 mdt_hsm_cdt_stop(m);
4348 mdt_hsm_cdt_fini(m);
4350 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
4351 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4352 obd_exports_barrier(obd);
4353 obd_zombie_barrier();
4357 tgt_fini(env, &m->mdt_lut);
4358 mdt_fs_cleanup(env, m);
4359 upcall_cache_cleanup(m->mdt_identity_cache);
4360 m->mdt_identity_cache = NULL;
4362 if (m->mdt_namespace != NULL) {
4363 ldlm_namespace_free(m->mdt_namespace, NULL,
4364 d->ld_obd->obd_force);
4365 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
4368 mdt_quota_fini(env, m);
4370 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
4372 mdt_seq_fini(env, m);
4373 mdt_fld_fini(env, m);
4375 next->md_ops->mdo_init_capa_ctxt(env, next, 0, 0, 0, NULL);
4376 cfs_timer_disarm(&m->mdt_ck_timer);
4377 mdt_ck_thread_stop(m);
4382 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4384 LASSERT(atomic_read(&d->ld_ref) == 0);
4386 server_put_mount(mdt_obd_name(m), true);
4391 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4393 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4394 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4396 struct mdt_thread_info *info;
4397 struct obd_device *obd;
4398 const char *dev = lustre_cfg_string(cfg, 0);
4399 const char *num = lustre_cfg_string(cfg, 2);
4400 struct lustre_mount_info *lmi = NULL;
4401 struct lustre_sb_info *lsi;
4403 struct seq_server_site *ss_site;
4404 const char *identity_upcall = "NONE";
4405 struct md_device *next;
4411 lu_device_init(&m->mdt_lu_dev, ldt);
4413 * Environment (env) might be missing mdt_thread_key values at that
4414 * point, if device is allocated when mdt_thread_key is in QUIESCENT
4417 * Usually device allocation path doesn't use module key values, but
4418 * mdt has to do a lot of work here, so allocate key value.
4420 rc = lu_env_refill((struct lu_env *)env);
4424 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4425 LASSERT(info != NULL);
4427 obd = class_name2obd(dev);
4428 LASSERT(obd != NULL);
4430 m->mdt_max_mdsize = MAX_MD_SIZE; /* 4 stripes */
4432 m->mdt_som_conf = 0;
4434 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
4436 /* default is coordinator off, it is started through conf_param
4438 m->mdt_opts.mo_coordinator = 0;
4440 lmi = server_get_mount(dev);
4442 CERROR("Cannot get mount info for %s!\n", dev);
4445 lsi = s2lsi(lmi->lmi_sb);
4446 /* CMD is supported only in IAM mode */
4448 node_id = simple_strtol(num, NULL, 10);
4449 obd->u.obt.obt_magic = OBT_MAGIC;
4452 spin_lock_init(&m->mdt_ioepoch_lock);
4453 m->mdt_capa_timeout = CAPA_TIMEOUT;
4454 m->mdt_capa_alg = CAPA_HMAC_ALG_SHA1;
4455 m->mdt_ck_timeout = CAPA_KEY_TIMEOUT;
4456 m->mdt_squash.rsi_uid = 0;
4457 m->mdt_squash.rsi_gid = 0;
4458 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
4459 init_rwsem(&m->mdt_squash.rsi_sem);
4460 spin_lock_init(&m->mdt_osfs_lock);
4461 m->mdt_osfs_age = cfs_time_shift_64(-1000);
4462 m->mdt_enable_remote_dir = 0;
4463 m->mdt_enable_remote_dir_gid = 0;
4465 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
4466 m->mdt_lu_dev.ld_obd = obd;
4467 /* Set this lu_device to obd for error handling purposes. */
4468 obd->obd_lu_dev = &m->mdt_lu_dev;
4470 /* init the stack */
4471 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
4473 CERROR("%s: Can't init device stack, rc %d\n",
4474 mdt_obd_name(m), rc);
4479 ss_site = mdt_seq_site(m);
4480 s->ld_seq_site = ss_site;
4483 /* set server index */
4484 ss_site->ss_node_id = node_id;
4486 /* failover is the default
4487 * FIXME: we do not failout mds0/mgs, which may cause some problems.
4488 * assumed whose ss_node_id == 0 XXX
4490 obd->obd_replayable = 1;
4491 /* No connection accepted until configurations will finish */
4492 obd->obd_no_conn = 1;
4494 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
4495 char *str = lustre_cfg_string(cfg, 4);
4496 if (strchr(str, 'n')) {
4497 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
4498 obd->obd_replayable = 0;
4502 rc = mdt_fld_init(env, mdt_obd_name(m), m);
4504 GOTO(err_fini_stack, rc);
4506 rc = mdt_seq_init(env, m);
4508 GOTO(err_fini_fld, rc);
4510 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
4511 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
4512 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
4513 LDLM_NAMESPACE_SERVER,
4514 LDLM_NAMESPACE_GREEDY,
4516 if (m->mdt_namespace == NULL)
4517 GOTO(err_fini_seq, rc = -ENOMEM);
4519 m->mdt_namespace->ns_lvbp = m;
4520 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
4522 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
4523 /* set obd_namespace for compatibility with old code */
4524 obd->obd_namespace = m->mdt_namespace;
4526 cfs_timer_init(&m->mdt_ck_timer, mdt_ck_timer_callback, m);
4528 rc = mdt_hsm_cdt_init(m);
4530 CERROR("%s: error initializing coordinator, rc %d\n",
4531 mdt_obd_name(m), rc);
4532 GOTO(err_free_ns, rc);
4535 rc = mdt_ck_thread_start(m);
4537 GOTO(err_free_hsm, rc);
4539 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
4540 OBD_FAIL_MDS_ALL_REQUEST_NET,
4541 OBD_FAIL_MDS_ALL_REPLY_NET);
4545 rc = mdt_fs_setup(env, m, obd, lsi);
4549 tgt_adapt_sptlrpc_conf(&m->mdt_lut, 1);
4551 next = m->mdt_child;
4552 rc = next->md_ops->mdo_iocontrol(env, next, OBD_IOC_GET_MNTOPT, 0,
4555 GOTO(err_fs_cleanup, rc);
4557 if (mntopts & MNTOPT_USERXATTR)
4558 m->mdt_opts.mo_user_xattr = 1;
4560 m->mdt_opts.mo_user_xattr = 0;
4562 rc = next->md_ops->mdo_maxeasize_get(env, next, &m->mdt_max_ea_size);
4564 GOTO(err_fs_cleanup, rc);
4566 if (mntopts & MNTOPT_ACL)
4567 m->mdt_opts.mo_acl = 1;
4569 m->mdt_opts.mo_acl = 0;
4571 /* XXX: to support suppgid for ACL, we enable identity_upcall
4572 * by default, otherwise, maybe got unexpected -EACCESS. */
4573 if (m->mdt_opts.mo_acl)
4574 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
4576 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
4578 &mdt_identity_upcall_cache_ops);
4579 if (IS_ERR(m->mdt_identity_cache)) {
4580 rc = PTR_ERR(m->mdt_identity_cache);
4581 m->mdt_identity_cache = NULL;
4582 GOTO(err_fs_cleanup, rc);
4585 rc = mdt_procfs_init(m, dev);
4587 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
4588 GOTO(err_recovery, rc);
4591 rc = mdt_quota_init(env, m, cfg);
4593 GOTO(err_procfs, rc);
4595 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
4596 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
4597 "mdt_ldlm_client", m->mdt_ldlm_client);
4599 ping_evictor_start();
4601 /* recovery will be started upon mdt_prepare()
4602 * when the whole stack is complete and ready
4603 * to serve the requests */
4605 mdt_init_capa_ctxt(env, m);
4607 /* Reduce the initial timeout on an MDS because it doesn't need such
4608 * a long timeout as an OST does. Adaptive timeouts will adjust this
4609 * value appropriately. */
4610 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
4611 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
4617 target_recovery_fini(obd);
4618 upcall_cache_cleanup(m->mdt_identity_cache);
4619 m->mdt_identity_cache = NULL;
4621 mdt_fs_cleanup(env, m);
4623 tgt_fini(env, &m->mdt_lut);
4625 cfs_timer_disarm(&m->mdt_ck_timer);
4626 mdt_ck_thread_stop(m);
4628 mdt_hsm_cdt_fini(m);
4630 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
4631 obd->obd_namespace = m->mdt_namespace = NULL;
4633 mdt_seq_fini(env, m);
4635 mdt_fld_fini(env, m);
4637 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4640 server_put_mount(dev, true);
4644 /* For interoperability, the left element is old parameter, the right one
4645 * is the new version of the parameter, if some parameter is deprecated,
4646 * the new version should be set as NULL. */
4647 static struct cfg_interop_param mdt_interop_param[] = {
4648 { "mdt.group_upcall", NULL },
4649 { "mdt.quota_type", NULL },
4650 { "mdd.quota_type", NULL },
4651 { "mdt.rootsquash", "mdt.root_squash" },
4652 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
4656 /* used by MGS to process specific configurations */
4657 static int mdt_process_config(const struct lu_env *env,
4658 struct lu_device *d, struct lustre_cfg *cfg)
4660 struct mdt_device *m = mdt_dev(d);
4661 struct md_device *md_next = m->mdt_child;
4662 struct lu_device *next = md2lu_dev(md_next);
4666 switch (cfg->lcfg_command) {
4668 struct obd_device *obd = d->ld_obd;
4670 /* For interoperability */
4671 struct cfg_interop_param *ptr = NULL;
4672 struct lustre_cfg *old_cfg = NULL;
4675 param = lustre_cfg_string(cfg, 1);
4676 if (param == NULL) {
4677 CERROR("param is empty\n");
4682 ptr = class_find_old_param(param, mdt_interop_param);
4684 if (ptr->new_param == NULL) {
4686 CWARN("For interoperability, skip this %s."
4687 " It is obsolete.\n", ptr->old_param);
4691 CWARN("Found old param %s, changed it to %s.\n",
4692 ptr->old_param, ptr->new_param);
4695 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
4702 rc = class_process_proc_param(PARAM_MDT, obd->obd_vars,
4704 if (rc > 0 || rc == -ENOSYS) {
4705 /* is it an HSM var ? */
4706 rc = class_process_proc_param(PARAM_HSM,
4707 hsm_cdt_get_proc_vars(),
4709 if (rc > 0 || rc == -ENOSYS)
4710 /* we don't understand; pass it on */
4711 rc = next->ld_ops->ldo_process_config(env, next,
4715 if (old_cfg != NULL)
4716 lustre_cfg_free(cfg);
4721 /* others are passed further */
4722 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4728 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
4729 const struct lu_object_header *hdr,
4730 struct lu_device *d)
4732 struct mdt_object *mo;
4736 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
4738 struct lu_object *o;
4739 struct lu_object_header *h;
4742 h = &mo->mot_header;
4743 lu_object_header_init(h);
4744 lu_object_init(o, h, d);
4745 lu_object_add_top(h, o);
4746 o->lo_ops = &mdt_obj_ops;
4747 mutex_init(&mo->mot_ioepoch_mutex);
4748 mutex_init(&mo->mot_lov_mutex);
4749 init_rwsem(&mo->mot_open_sem);
4755 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
4756 const struct lu_object_conf *unused)
4758 struct mdt_device *d = mdt_dev(o->lo_dev);
4759 struct lu_device *under;
4760 struct lu_object *below;
4764 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
4765 PFID(lu_object_fid(o)));
4767 under = &d->mdt_child->md_lu_dev;
4768 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
4769 if (below != NULL) {
4770 lu_object_add(o, below);
4777 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
4779 struct mdt_object *mo = mdt_obj(o);
4780 struct lu_object_header *h;
4784 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
4785 PFID(lu_object_fid(o)));
4787 LASSERT(atomic_read(&mo->mot_open_count) == 0);
4788 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
4791 lu_object_header_fini(h);
4792 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
4797 static int mdt_object_print(const struct lu_env *env, void *cookie,
4798 lu_printer_t p, const struct lu_object *o)
4800 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
4801 return (*p)(env, cookie, LUSTRE_MDT_NAME"-object@%p(ioepoch="LPU64" "
4802 "flags="LPX64", epochcount=%d, writecount=%d)",
4803 mdto, mdto->mot_ioepoch, mdto->mot_flags,
4804 mdto->mot_ioepoch_count, mdto->mot_writecount);
4807 static int mdt_prepare(const struct lu_env *env,
4808 struct lu_device *pdev,
4809 struct lu_device *cdev)
4811 struct mdt_device *mdt = mdt_dev(cdev);
4812 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
4813 struct obd_device *obd = cdev->ld_obd;
4820 rc = next->ld_ops->ldo_prepare(env, cdev, next);
4824 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
4828 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
4832 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
4833 /* The LFSCK instance is registered just now, so it must be there when
4834 * register the namespace to such instance. */
4835 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
4837 if (mdt->mdt_seq_site.ss_node_id == 0) {
4838 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
4839 &mdt->mdt_md_root_fid);
4844 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
4845 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
4846 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
4847 LASSERT(obd->obd_no_conn);
4848 spin_lock(&obd->obd_dev_lock);
4849 obd->obd_no_conn = 0;
4850 spin_unlock(&obd->obd_dev_lock);
4852 if (obd->obd_recovering == 0)
4853 mdt_postrecov(env, mdt);
4858 const struct lu_device_operations mdt_lu_ops = {
4859 .ldo_object_alloc = mdt_object_alloc,
4860 .ldo_process_config = mdt_process_config,
4861 .ldo_prepare = mdt_prepare,
4864 static const struct lu_object_operations mdt_obj_ops = {
4865 .loo_object_init = mdt_object_init,
4866 .loo_object_free = mdt_object_free,
4867 .loo_object_print = mdt_object_print
4870 static int mdt_obd_set_info_async(const struct lu_env *env,
4871 struct obd_export *exp,
4872 __u32 keylen, void *key,
4873 __u32 vallen, void *val,
4874 struct ptlrpc_request_set *set)
4880 if (KEY_IS(KEY_SPTLRPC_CONF)) {
4881 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp), 0);
4889 * Match client and server connection feature flags.
4891 * Compute the compatibility flags for a connection request based on
4892 * features mutually supported by client and server.
4894 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
4895 * must not be updated here, otherwise a partially initialized value may
4896 * be exposed. After the connection request is successfully processed,
4897 * the top-level MDT connect request handler atomically updates the export
4898 * connect flags from the obd_connect_data::ocd_connect_flags field of the
4899 * reply. \see mdt_connect().
4901 * \param exp the obd_export associated with this client/target pair
4902 * \param mdt the target device for the connection
4903 * \param data stores data for this connect request
4906 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
4907 * \retval -EBADE client and server feature requirements are incompatible
4909 static int mdt_connect_internal(struct obd_export *exp,
4910 struct mdt_device *mdt,
4911 struct obd_connect_data *data)
4913 LASSERT(data != NULL);
4915 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
4916 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
4918 if (!(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
4919 !(data->ocd_connect_flags & OBD_CONNECT_IBITS)) {
4920 CWARN("%s: client %s does not support ibits lock, either "
4921 "very old or an invalid client: flags "LPX64"\n",
4922 mdt_obd_name(mdt), exp->exp_client_uuid.uuid,
4923 data->ocd_connect_flags);
4927 if (!mdt->mdt_opts.mo_acl)
4928 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
4930 if (!mdt->mdt_opts.mo_user_xattr)
4931 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
4933 if (!mdt->mdt_som_conf)
4934 data->ocd_connect_flags &= ~OBD_CONNECT_SOM;
4936 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
4937 data->ocd_brw_size = min(data->ocd_brw_size,
4938 (__u32)MD_MAX_BRW_SIZE);
4939 if (data->ocd_brw_size == 0) {
4940 CERROR("%s: cli %s/%p ocd_connect_flags: "LPX64
4941 " ocd_version: %x ocd_grant: %d "
4942 "ocd_index: %u ocd_brw_size is "
4943 "unexpectedly zero, network data "
4944 "corruption? Refusing connection of this"
4947 exp->exp_client_uuid.uuid,
4948 exp, data->ocd_connect_flags, data->ocd_version,
4949 data->ocd_grant, data->ocd_index);
4954 /* NB: Disregard the rule against updating
4955 * exp_connect_data.ocd_connect_flags in this case, since
4956 * tgt_client_new() needs to know if this is a lightweight
4957 * connection, and it is safe to expose this flag before
4958 * connection processing completes. */
4959 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
4960 spin_lock(&exp->exp_lock);
4961 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
4962 spin_unlock(&exp->exp_lock);
4965 data->ocd_version = LUSTRE_VERSION_CODE;
4967 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
4968 CWARN("%s: MDS requires FID support, but client not\n",
4973 if (mdt->mdt_som_conf &&
4974 !(data->ocd_connect_flags & (OBD_CONNECT_LIGHTWEIGHT |
4975 OBD_CONNECT_MDS_MDS |
4976 OBD_CONNECT_SOM))) {
4977 CWARN("%s: MDS has SOM enabled, but client does not support "
4978 "it\n", mdt_obd_name(mdt));
4982 if (OCD_HAS_FLAG(data, PINGLESS)) {
4983 if (ptlrpc_pinger_suppress_pings()) {
4984 spin_lock(&exp->exp_obd->obd_dev_lock);
4985 list_del_init(&exp->exp_obd_chain_timed);
4986 spin_unlock(&exp->exp_obd->obd_dev_lock);
4988 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
4992 data->ocd_max_easize = mdt->mdt_max_ea_size;
4997 /* mds_connect copy */
4998 static int mdt_obd_connect(const struct lu_env *env,
4999 struct obd_export **exp, struct obd_device *obd,
5000 struct obd_uuid *cluuid,
5001 struct obd_connect_data *data,
5004 struct obd_export *lexp;
5005 struct lustre_handle conn = { 0 };
5006 struct mdt_device *mdt;
5010 LASSERT(env != NULL);
5011 if (!exp || !obd || !cluuid)
5014 mdt = mdt_dev(obd->obd_lu_dev);
5017 * first, check whether the stack is ready to handle requests
5018 * XXX: probably not very appropriate method is used now
5019 * at some point we should find a better one
5021 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) && data != NULL &&
5022 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
5023 rc = obd_get_info(env, mdt->mdt_child_exp,
5024 sizeof(KEY_OSP_CONNECTED),
5025 KEY_OSP_CONNECTED, NULL, NULL, NULL);
5028 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
5031 rc = class_connect(&conn, obd, cluuid);
5035 lexp = class_conn2export(&conn);
5036 LASSERT(lexp != NULL);
5038 rc = mdt_connect_internal(lexp, mdt, data);
5040 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
5043 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5044 rc = tgt_client_new(env, lexp);
5046 mdt_export_stats_init(obd, lexp, localdata);
5048 /* For phase I, sync for cross-ref operation. */
5049 lexp->exp_keep_sync = 1;
5053 class_disconnect(lexp);
5062 static int mdt_obd_reconnect(const struct lu_env *env,
5063 struct obd_export *exp, struct obd_device *obd,
5064 struct obd_uuid *cluuid,
5065 struct obd_connect_data *data,
5071 if (exp == NULL || obd == NULL || cluuid == NULL)
5074 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
5076 mdt_export_stats_init(obd, exp, localdata);
5081 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
5082 struct mdt_thread_info *info,
5083 struct mdt_file_data *mfd)
5085 struct lu_context ses;
5089 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
5094 lu_context_enter(&ses);
5096 mdt_ucred(info)->uc_valid = UCRED_OLD;
5097 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
5099 lu_context_exit(&ses);
5100 lu_context_fini(&ses);
5106 static int mdt_export_cleanup(struct obd_export *exp)
5108 struct list_head closing_list;
5109 struct mdt_export_data *med = &exp->exp_mdt_data;
5110 struct obd_device *obd = exp->exp_obd;
5111 struct mdt_device *mdt;
5112 struct mdt_thread_info *info;
5114 struct mdt_file_data *mfd, *n;
5118 INIT_LIST_HEAD(&closing_list);
5119 spin_lock(&med->med_open_lock);
5120 while (!list_empty(&med->med_open_head)) {
5121 struct list_head *tmp = med->med_open_head.next;
5122 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
5124 /* Remove mfd handle so it can't be found again.
5125 * We are consuming the mfd_list reference here. */
5126 class_handle_unhash(&mfd->mfd_handle);
5127 list_move_tail(&mfd->mfd_list, &closing_list);
5129 spin_unlock(&med->med_open_lock);
5130 mdt = mdt_dev(obd->obd_lu_dev);
5131 LASSERT(mdt != NULL);
5133 rc = lu_env_init(&env, LCT_MD_THREAD);
5137 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5138 LASSERT(info != NULL);
5139 memset(info, 0, sizeof *info);
5140 info->mti_env = &env;
5141 info->mti_mdt = mdt;
5142 info->mti_exp = exp;
5144 if (!list_empty(&closing_list)) {
5145 struct md_attr *ma = &info->mti_attr;
5147 /* Close any open files (which may also cause orphan
5149 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
5150 list_del_init(&mfd->mfd_list);
5151 ma->ma_need = ma->ma_valid = 0;
5153 /* This file is being closed due to an eviction, it
5154 * could have been modified and now dirty regarding to
5155 * HSM archive, check this!
5156 * The logic here is to mark a file dirty if there's a
5157 * chance it was dirtied before the client was evicted,
5158 * so that we don't have to wait for a release attempt
5159 * before finding out the file was actually dirty and
5160 * fail the release. Aggressively marking it dirty here
5161 * will cause the policy engine to attempt to
5162 * re-archive it; when rearchiving, we can compare the
5163 * current version to the HSM data_version and make the
5164 * archive request into a noop if it's not actually
5167 if (mfd->mfd_mode & (FMODE_WRITE|MDS_FMODE_TRUNC))
5168 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
5170 /* Don't unlink orphan on failover umount, LU-184 */
5171 if (exp->exp_flags & OBD_OPT_FAILOVER) {
5172 ma->ma_valid = MA_FLAGS;
5173 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
5175 mdt_mfd_close(info, mfd);
5178 info->mti_mdt = NULL;
5179 /* cleanup client slot early */
5180 /* Do not erase record for recoverable client. */
5181 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
5182 tgt_client_del(&env, exp);
5188 static int mdt_obd_disconnect(struct obd_export *exp)
5194 class_export_get(exp);
5196 rc = server_disconnect_export(exp);
5198 CDEBUG(D_IOCTL, "server disconnect error: rc = %d\n", rc);
5200 rc = mdt_export_cleanup(exp);
5201 class_export_put(exp);
5205 /* FIXME: Can we avoid using these two interfaces? */
5206 static int mdt_init_export(struct obd_export *exp)
5208 struct mdt_export_data *med = &exp->exp_mdt_data;
5212 INIT_LIST_HEAD(&med->med_open_head);
5213 spin_lock_init(&med->med_open_lock);
5214 mutex_init(&med->med_idmap_mutex);
5215 med->med_idmap = NULL;
5216 spin_lock(&exp->exp_lock);
5217 exp->exp_connecting = 1;
5218 spin_unlock(&exp->exp_lock);
5220 /* self-export doesn't need client data and ldlm initialization */
5221 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5222 &exp->exp_client_uuid)))
5225 rc = tgt_client_alloc(exp);
5229 rc = ldlm_init_export(exp);
5236 tgt_client_free(exp);
5238 CERROR("%s: Failed to initialize export: rc = %d\n",
5239 exp->exp_obd->obd_name, rc);
5243 static int mdt_destroy_export(struct obd_export *exp)
5247 if (exp_connect_rmtclient(exp))
5248 mdt_cleanup_idmap(&exp->exp_mdt_data);
5250 target_destroy_export(exp);
5251 /* destroy can be called from failed obd_setup, so
5252 * checking uuid is safer than obd_self_export */
5253 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5254 &exp->exp_client_uuid)))
5257 ldlm_destroy_export(exp);
5258 tgt_client_free(exp);
5260 LASSERT(list_empty(&exp->exp_outstanding_replies));
5261 LASSERT(list_empty(&exp->exp_mdt_data.med_open_head));
5266 /** The maximum depth that fid2path() will search.
5267 * This is limited only because we want to store the fids for
5268 * historical path lookup purposes.
5270 #define MAX_PATH_DEPTH 100
5272 /** mdt_path() lookup structure. */
5273 struct path_lookup_info {
5274 __u64 pli_recno; /**< history point */
5275 __u64 pli_currec; /**< current record */
5276 struct lu_fid pli_fid;
5277 struct lu_fid pli_fids[MAX_PATH_DEPTH]; /**< path, in fids */
5278 struct mdt_object *pli_mdt_obj;
5279 char *pli_path; /**< full path */
5281 int pli_linkno; /**< which hardlink to follow */
5282 int pli_fidcount; /**< number of \a pli_fids */
5285 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
5286 struct linkea_data *ldata)
5290 LASSERT(ldata->ld_buf->lb_buf != NULL);
5292 if (!mdt_object_exists(mdt_obj))
5295 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5296 ldata->ld_buf, XATTR_NAME_LINK);
5297 if (rc == -ERANGE) {
5298 /* Buf was too small, figure out what we need. */
5299 lu_buf_free(ldata->ld_buf);
5300 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5301 ldata->ld_buf, XATTR_NAME_LINK);
5304 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
5305 if (ldata->ld_buf->lb_buf == NULL)
5307 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5308 ldata->ld_buf, XATTR_NAME_LINK);
5313 return linkea_init(ldata);
5316 static int mdt_path_current(struct mdt_thread_info *info,
5317 struct path_lookup_info *pli)
5319 struct mdt_device *mdt = info->mti_mdt;
5320 struct mdt_object *mdt_obj;
5321 struct link_ea_header *leh;
5322 struct link_ea_entry *lee;
5323 struct lu_name *tmpname = &info->mti_name;
5324 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
5325 struct lu_buf *buf = &info->mti_big_buf;
5328 struct linkea_data ldata = { 0 };
5332 /* temp buffer for path element, the buffer will be finally freed
5333 * in mdt_thread_info_fini */
5334 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
5335 if (buf->lb_buf == NULL)
5339 ptr = pli->pli_path + pli->pli_pathlen - 1;
5342 pli->pli_fidcount = 0;
5343 pli->pli_fids[0] = *(struct lu_fid *)mdt_object_fid(pli->pli_mdt_obj);
5344 *tmpfid = pli->pli_fids[0];
5345 /* root FID only exists on MDT0, and fid2path should also ends at MDT0,
5346 * so checking root_fid can only happen on MDT0. */
5347 while (!lu_fid_eq(&mdt->mdt_md_root_fid,
5348 &pli->pli_fids[pli->pli_fidcount])) {
5349 struct lu_buf lmv_buf;
5351 mdt_obj = mdt_object_find(info->mti_env, mdt, tmpfid);
5352 if (IS_ERR(mdt_obj))
5353 GOTO(out, rc = PTR_ERR(mdt_obj));
5355 if (!mdt_object_exists(mdt_obj)) {
5356 mdt_object_put(info->mti_env, mdt_obj);
5357 GOTO(out, rc = -ENOENT);
5360 if (mdt_object_remote(mdt_obj)) {
5361 mdt_object_put(info->mti_env, mdt_obj);
5362 GOTO(remote_out, rc = -EREMOTE);
5365 rc = mdt_links_read(info, mdt_obj, &ldata);
5367 mdt_object_put(info->mti_env, mdt_obj);
5372 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
5373 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
5374 /* If set, use link #linkno for path lookup, otherwise use
5375 link #0. Only do this for the final path element. */
5376 if (pli->pli_fidcount == 0 &&
5377 pli->pli_linkno < leh->leh_reccount) {
5379 for (count = 0; count < pli->pli_linkno; count++) {
5380 lee = (struct link_ea_entry *)
5381 ((char *)lee + reclen);
5382 linkea_entry_unpack(lee, &reclen, tmpname,
5385 if (pli->pli_linkno < leh->leh_reccount - 1)
5386 /* indicate to user there are more links */
5390 lmv_buf.lb_buf = info->mti_xattr_buf;
5391 lmv_buf.lb_len = sizeof(info->mti_xattr_buf);
5392 /* Check if it is slave stripes */
5393 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5394 &lmv_buf, XATTR_NAME_LMV);
5395 mdt_object_put(info->mti_env, mdt_obj);
5397 union lmv_mds_md *lmm = lmv_buf.lb_buf;
5399 /* For slave stripes, get its master */
5400 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE) {
5401 pli->pli_fids[pli->pli_fidcount] = *tmpfid;
5404 } else if (rc < 0 && rc != -ENODATA) {
5410 /* Pack the name in the end of the buffer */
5411 ptr -= tmpname->ln_namelen;
5412 if (ptr - 1 <= pli->pli_path)
5413 GOTO(out, rc = -EOVERFLOW);
5414 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
5417 /* Store the parent fid for historic lookup */
5418 if (++pli->pli_fidcount >= MAX_PATH_DEPTH)
5419 GOTO(out, rc = -EOVERFLOW);
5420 pli->pli_fids[pli->pli_fidcount] = *tmpfid;
5424 ptr++; /* skip leading / */
5425 memmove(pli->pli_path, ptr, pli->pli_path + pli->pli_pathlen - ptr);
5432 /* Returns the full path to this fid, as of changelog record recno. */
5433 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
5434 char *path, int pathlen, __u64 *recno, int *linkno,
5437 struct mdt_device *mdt = info->mti_mdt;
5438 struct path_lookup_info *pli;
5446 if (lu_fid_eq(&mdt->mdt_md_root_fid, mdt_object_fid(obj))) {
5455 pli->pli_mdt_obj = obj;
5456 pli->pli_recno = *recno;
5457 pli->pli_path = path;
5458 pli->pli_pathlen = pathlen;
5459 pli->pli_linkno = *linkno;
5461 /* Retry multiple times in case file is being moved */
5462 while (tries-- && rc == -EAGAIN)
5463 rc = mdt_path_current(info, pli);
5465 /* return the last resolved fids to the client, so the client will
5466 * build the left path on another MDT for remote object */
5467 *fid = pli->pli_fids[pli->pli_fidcount];
5469 *recno = pli->pli_currec;
5470 /* Return next link index to caller */
5471 *linkno = pli->pli_linkno;
5478 static int mdt_fid2path(struct mdt_thread_info *info,
5479 struct getinfo_fid2path *fp)
5481 struct mdt_device *mdt = info->mti_mdt;
5482 struct mdt_object *obj;
5486 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
5487 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
5489 if (!fid_is_sane(&fp->gf_fid))
5492 if (!fid_is_namespace_visible(&fp->gf_fid)) {
5493 CWARN("%s: "DFID" is invalid, sequence should be "
5494 ">= "LPX64"\n", mdt_obd_name(mdt),
5495 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
5499 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
5500 if (obj == NULL || IS_ERR(obj)) {
5501 CDEBUG(D_IOCTL, "no object "DFID": %ld\n", PFID(&fp->gf_fid),
5506 if (mdt_object_remote(obj))
5508 else if (!mdt_object_exists(obj))
5514 mdt_object_put(info->mti_env, obj);
5515 CDEBUG(D_IOCTL, "nonlocal object "DFID": rc = %d\n",
5516 PFID(&fp->gf_fid), rc);
5520 rc = mdt_path(info, obj, fp->gf_path, fp->gf_pathlen, &fp->gf_recno,
5521 &fp->gf_linkno, &fp->gf_fid);
5523 CDEBUG(D_INFO, "fid "DFID", path %s recno "LPX64" linkno %u\n",
5524 PFID(&fp->gf_fid), fp->gf_path, fp->gf_recno, fp->gf_linkno);
5526 mdt_object_put(info->mti_env, obj);
5531 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key,
5532 void *val, int vallen)
5534 struct getinfo_fid2path *fpout, *fpin;
5537 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
5540 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
5541 lustre_swab_fid2path(fpin);
5543 memcpy(fpout, fpin, sizeof(*fpin));
5544 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
5547 rc = mdt_fid2path(info, fpout);
5551 int mdt_get_info(struct tgt_session_info *tsi)
5561 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
5563 CDEBUG(D_IOCTL, "No GETINFO key\n");
5564 RETURN(err_serious(-EFAULT));
5566 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
5569 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
5570 if (vallen == NULL) {
5571 CDEBUG(D_IOCTL, "%s: cannot get RMF_GETINFO_VALLEN buffer\n",
5572 tgt_name(tsi->tsi_tgt));
5573 RETURN(err_serious(-EFAULT));
5576 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
5578 rc = req_capsule_server_pack(tsi->tsi_pill);
5580 RETURN(err_serious(rc));
5582 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
5583 if (valout == NULL) {
5584 CDEBUG(D_IOCTL, "%s: cannot get get-info RPC out buffer\n",
5585 tgt_name(tsi->tsi_tgt));
5586 RETURN(err_serious(-EFAULT));
5589 if (KEY_IS(KEY_FID2PATH)) {
5590 struct mdt_thread_info *info = tsi2mdt_info(tsi);
5592 rc = mdt_rpc_fid2path(info, key, valout, *vallen);
5593 mdt_thread_info_fini(info);
5600 /* Pass the ioc down */
5601 static int mdt_ioc_child(struct lu_env *env, struct mdt_device *mdt,
5602 unsigned int cmd, int len, void *data)
5604 struct lu_context ioctl_session;
5605 struct md_device *next = mdt->mdt_child;
5609 rc = lu_context_init(&ioctl_session, LCT_SERVER_SESSION);
5612 ioctl_session.lc_thread = (struct ptlrpc_thread *)current;
5613 lu_context_enter(&ioctl_session);
5614 env->le_ses = &ioctl_session;
5616 LASSERT(next->md_ops->mdo_iocontrol);
5617 rc = next->md_ops->mdo_iocontrol(env, next, cmd, len, data);
5619 lu_context_exit(&ioctl_session);
5620 lu_context_fini(&ioctl_session);
5624 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
5626 struct obd_ioctl_data *data = karg;
5629 struct mdt_object *obj;
5630 struct mdt_lock_handle *lh;
5634 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
5635 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
5638 fid = (struct lu_fid *)data->ioc_inlbuf1;
5640 if (!fid_is_sane(fid))
5643 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
5645 lh = &mti->mti_lh[MDT_LH_PARENT];
5646 mdt_lock_reg_init(lh, LCK_CR);
5648 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
5650 RETURN(PTR_ERR(obj));
5652 if (mdt_object_remote(obj)) {
5655 * before calling version get the correct MDS should be
5656 * fid, this is error to find remote object here
5658 CERROR("nonlocal object "DFID"\n", PFID(fid));
5659 } else if (!mdt_object_exists(obj)) {
5660 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
5663 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
5664 *(__u64 *)data->ioc_inlbuf2 = version;
5667 mdt_object_unlock_put(mti, obj, lh, 1);
5671 /* ioctls on obd dev */
5672 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
5673 void *karg, void *uarg)
5676 struct obd_device *obd = exp->exp_obd;
5677 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
5678 struct dt_device *dt = mdt->mdt_bottom;
5682 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
5683 rc = lu_env_init(&env, LCT_MD_THREAD);
5689 rc = mdt_device_sync(&env, mdt);
5691 case OBD_IOC_SET_READONLY:
5692 rc = dt->dd_ops->dt_ro(&env, dt);
5694 case OBD_IOC_ABORT_RECOVERY:
5695 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
5696 target_stop_recovery_thread(obd);
5699 case OBD_IOC_CHANGELOG_REG:
5700 case OBD_IOC_CHANGELOG_DEREG:
5701 case OBD_IOC_CHANGELOG_CLEAR:
5702 rc = mdt_ioc_child(&env, mdt, cmd, len, karg);
5704 case OBD_IOC_START_LFSCK: {
5705 struct md_device *next = mdt->mdt_child;
5706 struct obd_ioctl_data *data = karg;
5707 struct lfsck_start_param lsp;
5709 if (unlikely(data == NULL)) {
5714 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
5715 lsp.lsp_index_valid = 0;
5716 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
5719 case OBD_IOC_STOP_LFSCK: {
5720 struct md_device *next = mdt->mdt_child;
5721 struct obd_ioctl_data *data = karg;
5722 struct lfsck_stop stop;
5724 stop.ls_status = LS_STOPPED;
5725 /* Old lfsck utils may pass NULL @stop. */
5726 if (data->ioc_inlbuf1 == NULL)
5730 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
5732 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
5735 case OBD_IOC_GET_OBJ_VERSION: {
5736 struct mdt_thread_info *mti;
5737 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5738 memset(mti, 0, sizeof *mti);
5739 mti->mti_env = &env;
5743 rc = mdt_ioc_version_get(mti, karg);
5746 case OBD_IOC_CATLOGLIST: {
5747 struct mdt_thread_info *mti;
5749 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5750 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
5751 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
5752 &mti->mti_tmp_fid1);
5757 CERROR("%s: Not supported cmd = %d, rc = %d\n",
5758 mdt_obd_name(mdt), cmd, rc);
5765 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
5767 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
5768 struct lfsck_start_param lsp;
5772 lsp.lsp_start = NULL;
5773 lsp.lsp_index_valid = 0;
5774 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
5775 OBD_IOC_START_LFSCK,
5777 if (rc != 0 && rc != -EALREADY)
5778 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
5779 mdt_obd_name(mdt), rc);
5781 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
5785 static int mdt_obd_postrecov(struct obd_device *obd)
5790 rc = lu_env_init(&env, LCT_MD_THREAD);
5793 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
5798 static struct obd_ops mdt_obd_device_ops = {
5799 .o_owner = THIS_MODULE,
5800 .o_set_info_async = mdt_obd_set_info_async,
5801 .o_connect = mdt_obd_connect,
5802 .o_reconnect = mdt_obd_reconnect,
5803 .o_disconnect = mdt_obd_disconnect,
5804 .o_init_export = mdt_init_export,
5805 .o_destroy_export = mdt_destroy_export,
5806 .o_iocontrol = mdt_iocontrol,
5807 .o_postrecov = mdt_obd_postrecov,
5810 static struct lu_device* mdt_device_fini(const struct lu_env *env,
5811 struct lu_device *d)
5813 struct mdt_device *m = mdt_dev(d);
5820 static struct lu_device *mdt_device_free(const struct lu_env *env,
5821 struct lu_device *d)
5823 struct mdt_device *m = mdt_dev(d);
5826 lu_device_fini(&m->mdt_lu_dev);
5832 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
5833 struct lu_device_type *t,
5834 struct lustre_cfg *cfg)
5836 struct lu_device *l;
5837 struct mdt_device *m;
5844 rc = mdt_init0(env, m, t, cfg);
5846 mdt_device_free(env, l);
5851 l = ERR_PTR(-ENOMEM);
5855 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
5856 LU_KEY_INIT(mdt, struct mdt_thread_info);
5858 static void mdt_key_fini(const struct lu_context *ctx,
5859 struct lu_context_key *key, void* data)
5861 struct mdt_thread_info *info = data;
5863 if (info->mti_big_lmm) {
5864 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
5865 info->mti_big_lmm = NULL;
5866 info->mti_big_lmmsize = 0;
5871 /* context key: mdt_thread_key */
5872 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
5874 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
5876 return lu_ucred(info->mti_env);
5879 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
5881 return lu_ucred_check(info->mti_env);
5885 * Enable/disable COS (Commit On Sharing).
5887 * Set/Clear the COS flag in mdt options.
5889 * \param mdt mdt device
5890 * \param val 0 disables COS, other values enable COS
5892 void mdt_enable_cos(struct mdt_device *mdt, int val)
5897 mdt->mdt_opts.mo_cos = !!val;
5898 rc = lu_env_init(&env, LCT_LOCAL);
5899 if (unlikely(rc != 0)) {
5900 CWARN("%s: lu_env initialization failed, cannot "
5901 "sync: rc = %d\n", mdt_obd_name(mdt), rc);
5904 mdt_device_sync(&env, mdt);
5909 * Check COS (Commit On Sharing) status.
5911 * Return COS flag status.
5913 * \param mdt mdt device
5915 int mdt_cos_is_enabled(struct mdt_device *mdt)
5917 return mdt->mdt_opts.mo_cos != 0;
5920 static struct lu_device_type_operations mdt_device_type_ops = {
5921 .ldto_device_alloc = mdt_device_alloc,
5922 .ldto_device_free = mdt_device_free,
5923 .ldto_device_fini = mdt_device_fini
5926 static struct lu_device_type mdt_device_type = {
5927 .ldt_tags = LU_DEVICE_MD,
5928 .ldt_name = LUSTRE_MDT_NAME,
5929 .ldt_ops = &mdt_device_type_ops,
5930 .ldt_ctx_tags = LCT_MD_THREAD
5933 static int __init mdt_mod_init(void)
5937 CLASSERT(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") ==
5938 FID_NOBRACE_LEN + 1);
5939 CLASSERT(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") ==
5941 rc = lu_kmem_init(mdt_caches);
5945 rc = mds_mod_init();
5949 rc = class_register_type(&mdt_obd_device_ops, NULL, true, NULL,
5950 LUSTRE_MDT_NAME, &mdt_device_type);
5955 lu_kmem_fini(mdt_caches);
5962 static void __exit mdt_mod_exit(void)
5964 class_unregister_type(LUSTRE_MDT_NAME);
5966 lu_kmem_fini(mdt_caches);
5969 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
5970 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
5971 MODULE_LICENSE("GPL");
5973 cfs_module(mdt, LUSTRE_VERSION_STRING, mdt_mod_init, mdt_mod_exit);