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_shrink, 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 md_object *next = mdt_object_child(parent);
1327 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1328 struct lu_name *lname = NULL;
1329 struct mdt_lock_handle *lhp = NULL;
1330 struct ldlm_lock *lock;
1337 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1338 LASSERT(ergo(is_resent,
1339 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1341 LASSERT(parent != NULL);
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, next, lname, child_fid,
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);
2332 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
2333 lhc->mlh_reg_lh.cookie);
2335 if (!fid_res_name_eq(mdt_object_fid(mo),
2336 &lock->l_resource->lr_name)) {
2337 CWARN("%s: Although resent, but still not "
2338 "get child lock:"DFID"\n",
2339 info->mti_exp->exp_obd->obd_name,
2340 PFID(mdt_object_fid(mo)));
2341 LDLM_LOCK_PUT(lock);
2344 LDLM_LOCK_PUT(lock);
2350 int mdt_remote_object_lock(struct mdt_thread_info *mti,
2351 struct mdt_object *o, const struct lu_fid *fid,
2352 struct lustre_handle *lh, ldlm_mode_t mode,
2355 struct ldlm_enqueue_info *einfo = &mti->mti_einfo;
2356 ldlm_policy_data_t *policy = &mti->mti_policy;
2357 struct ldlm_res_id *res_id = &mti->mti_res_id;
2361 LASSERT(mdt_object_remote(o));
2363 LASSERT(ibits == MDS_INODELOCK_UPDATE);
2365 fid_build_reg_res_name(fid, res_id);
2367 memset(einfo, 0, sizeof(*einfo));
2368 einfo->ei_type = LDLM_IBITS;
2369 einfo->ei_mode = mode;
2370 einfo->ei_cb_bl = mdt_remote_blocking_ast;
2371 einfo->ei_cb_cp = ldlm_completion_ast;
2372 einfo->ei_enq_slave = 0;
2373 einfo->ei_res_id = res_id;
2375 memset(policy, 0, sizeof(*policy));
2376 policy->l_inodebits.bits = ibits;
2378 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
2383 static int mdt_object_local_lock(struct mdt_thread_info *info,
2384 struct mdt_object *o,
2385 struct mdt_lock_handle *lh, __u64 ibits,
2386 bool nonblock, int locality)
2388 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2389 ldlm_policy_data_t *policy = &info->mti_policy;
2390 struct ldlm_res_id *res_id = &info->mti_res_id;
2395 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2396 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2397 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2398 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2400 /* Only enqueue LOOKUP lock for remote object */
2401 if (mdt_object_remote(o))
2402 LASSERT(ibits == MDS_INODELOCK_LOOKUP);
2404 if (lh->mlh_type == MDT_PDO_LOCK) {
2405 /* check for exists after object is locked */
2406 if (mdt_object_exists(o) == 0) {
2407 /* Non-existent object shouldn't have PDO lock */
2410 /* Non-dir object shouldn't have PDO lock */
2411 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
2416 memset(policy, 0, sizeof(*policy));
2417 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2419 dlmflags = LDLM_FL_ATOMIC_CB;
2421 dlmflags |= LDLM_FL_BLOCK_NOWAIT;
2424 * Take PDO lock on whole directory and build correct @res_id for lock
2425 * on part of directory.
2427 if (lh->mlh_pdo_hash != 0) {
2428 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2429 mdt_lock_pdo_mode(info, o, lh);
2430 if (lh->mlh_pdo_mode != LCK_NL) {
2432 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2433 * is never going to be sent to client and we do not
2434 * want it slowed down due to possible cancels.
2436 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2437 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2438 policy, res_id, dlmflags,
2439 info->mti_exp == NULL ? NULL :
2440 &info->mti_exp->exp_handle.h_cookie);
2446 * Finish res_id initializing by name hash marking part of
2447 * directory which is taking modification.
2449 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2452 policy->l_inodebits.bits = ibits;
2455 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2456 * going to be sent to client. If it is - mdt_intent_policy() path will
2457 * fix it up and turn FL_LOCAL flag off.
2459 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2460 res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
2461 info->mti_exp == NULL ? NULL :
2462 &info->mti_exp->exp_handle.h_cookie);
2464 mdt_object_unlock(info, o, lh, 1);
2465 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2466 lh->mlh_pdo_hash != 0 &&
2467 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX)) {
2468 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2475 mdt_object_lock_internal(struct mdt_thread_info *info, struct mdt_object *o,
2476 struct mdt_lock_handle *lh, __u64 ibits,
2477 bool nonblock, int locality)
2482 if (!mdt_object_remote(o))
2483 return mdt_object_local_lock(info, o, lh, ibits, nonblock,
2486 if (locality == MDT_LOCAL_LOCK) {
2487 CERROR("%s: try to get local lock for remote object"
2488 DFID".\n", mdt_obd_name(info->mti_mdt),
2489 PFID(mdt_object_fid(o)));
2493 /* XXX do not support PERM/LAYOUT/XATTR lock for remote object yet */
2494 ibits &= ~(MDS_INODELOCK_PERM | MDS_INODELOCK_LAYOUT |
2495 MDS_INODELOCK_XATTR);
2496 if (ibits & MDS_INODELOCK_UPDATE) {
2497 /* Sigh, PDO needs to enqueue 2 locks right now, but
2498 * enqueue RPC can only request 1 lock, to avoid extra
2499 * RPC, so it will instead enqueue EX lock for remote
2500 * object anyway XXX*/
2501 if (lh->mlh_type == MDT_PDO_LOCK &&
2502 lh->mlh_pdo_hash != 0) {
2503 CDEBUG(D_INFO, "%s: "DFID" convert PDO lock to"
2504 "EX lock.\n", mdt_obd_name(info->mti_mdt),
2505 PFID(mdt_object_fid(o)));
2506 lh->mlh_pdo_hash = 0;
2507 lh->mlh_rreg_mode = LCK_EX;
2508 lh->mlh_type = MDT_REG_LOCK;
2510 rc = mdt_remote_object_lock(info, o, mdt_object_fid(o),
2513 MDS_INODELOCK_UPDATE);
2518 /* Only enqueue LOOKUP lock for remote object */
2519 if (ibits & MDS_INODELOCK_LOOKUP) {
2520 rc = mdt_object_local_lock(info, o, lh,
2521 MDS_INODELOCK_LOOKUP,
2522 nonblock, locality);
2530 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2531 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2533 return mdt_object_lock_internal(info, o, lh, ibits, false, locality);
2536 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
2537 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2539 struct mdt_lock_handle tmp = *lh;
2542 rc = mdt_object_lock_internal(info, o, &tmp, ibits, true, locality);
2550 * Save a lock within request object.
2552 * Keep the lock referenced until whether client ACK or transaction
2553 * commit happens or release the lock immediately depending on input
2554 * parameters. If COS is ON, a write lock is converted to COS lock
2557 * \param info thead info object
2558 * \param h lock handle
2559 * \param mode lock mode
2560 * \param decref force immediate lock releasing
2563 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2564 ldlm_mode_t mode, int decref)
2568 if (lustre_handle_is_used(h)) {
2569 if (decref || !info->mti_has_trans ||
2570 !(mode & (LCK_PW | LCK_EX))){
2571 mdt_fid_unlock(h, mode);
2573 struct mdt_device *mdt = info->mti_mdt;
2574 struct ldlm_lock *lock = ldlm_handle2lock(h);
2575 struct ptlrpc_request *req = mdt_info_req(info);
2578 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2580 /* there is no request if mdt_object_unlock() is called
2581 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
2582 if (likely(req != NULL)) {
2583 CDEBUG(D_HA, "request = %p reply state = %p"
2584 " transno = "LPD64"\n", req,
2585 req->rq_reply_state, req->rq_transno);
2586 if (mdt_cos_is_enabled(mdt)) {
2588 ldlm_lock_downgrade(lock, LCK_COS);
2591 ptlrpc_save_lock(req, h, mode, no_ack);
2593 ldlm_lock_decref(h, mode);
2595 if (mdt_is_lock_sync(lock)) {
2596 CDEBUG(D_HA, "found sync-lock,"
2597 " async commit started\n");
2598 mdt_device_commit_async(info->mti_env,
2601 LDLM_LOCK_PUT(lock);
2610 * Unlock mdt object.
2612 * Immeditely release the regular lock and the PDO lock or save the
2613 * lock in reqeuest and keep them referenced until client ACK or
2614 * transaction commit.
2616 * \param info thread info object
2617 * \param o mdt object
2618 * \param lh mdt lock handle referencing regular and PDO locks
2619 * \param decref force immediate lock releasing
2621 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2622 struct mdt_lock_handle *lh, int decref)
2626 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2627 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2629 if (lustre_handle_is_used(&lh->mlh_rreg_lh))
2630 ldlm_lock_decref(&lh->mlh_rreg_lh, lh->mlh_rreg_mode);
2635 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2636 const struct lu_fid *f,
2637 struct mdt_lock_handle *lh,
2640 struct mdt_object *o;
2642 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2646 rc = mdt_object_lock(info, o, lh, ibits,
2649 mdt_object_put(info->mti_env, o);
2656 void mdt_object_unlock_put(struct mdt_thread_info * info,
2657 struct mdt_object * o,
2658 struct mdt_lock_handle *lh,
2661 mdt_object_unlock(info, o, lh, decref);
2662 mdt_object_put(info->mti_env, o);
2666 * Generic code handling requests that have struct mdt_body passed in:
2668 * - extract mdt_body from request and save it in @info, if present;
2670 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2673 * - if HABEO_CORPUS flag is set for this request type check whether object
2674 * actually exists on storage (lu_object_exists()).
2677 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2679 const struct mdt_body *body;
2680 struct mdt_object *obj;
2681 const struct lu_env *env;
2682 struct req_capsule *pill;
2686 env = info->mti_env;
2687 pill = info->mti_pill;
2689 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2693 if (!(body->mbo_valid & OBD_MD_FLID))
2696 if (!fid_is_sane(&body->mbo_fid1)) {
2697 CERROR("Invalid fid: "DFID"\n", PFID(&body->mbo_fid1));
2702 * Do not get size or any capa fields before we check that request
2703 * contains capa actually. There are some requests which do not, for
2704 * instance MDS_IS_SUBDIR.
2706 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2707 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2708 mdt_set_capainfo(info, 0, &body->mbo_fid1,
2709 req_capsule_client_get(pill, &RMF_CAPA1));
2711 obj = mdt_object_find(env, info->mti_mdt, &body->mbo_fid1);
2713 if ((flags & HABEO_CORPUS) &&
2714 !mdt_object_exists(obj)) {
2715 mdt_object_put(env, obj);
2716 /* for capability renew ENOENT will be handled in
2718 if (body->mbo_valid & OBD_MD_FLOSSCAPA)
2723 info->mti_object = obj;
2732 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2734 struct req_capsule *pill = info->mti_pill;
2738 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2739 rc = mdt_body_unpack(info, flags);
2743 if (rc == 0 && (flags & HABEO_REFERO)) {
2745 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2746 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2748 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2749 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
2752 rc = req_capsule_server_pack(pill);
2757 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2759 struct md_device *next = m->mdt_child;
2761 return next->md_ops->mdo_init_capa_ctxt(env, next,
2762 m->mdt_lut.lut_mds_capa,
2763 m->mdt_capa_timeout,
2768 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2770 lh->mlh_type = MDT_NUL_LOCK;
2771 lh->mlh_reg_lh.cookie = 0ull;
2772 lh->mlh_reg_mode = LCK_MINMODE;
2773 lh->mlh_pdo_lh.cookie = 0ull;
2774 lh->mlh_pdo_mode = LCK_MINMODE;
2775 lh->mlh_rreg_lh.cookie = 0ull;
2776 lh->mlh_rreg_mode = LCK_MINMODE;
2779 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2781 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2782 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2786 * Initialize fields of struct mdt_thread_info. Other fields are left in
2787 * uninitialized state, because it's too expensive to zero out whole
2788 * mdt_thread_info (> 1K) on each request arrival.
2790 void mdt_thread_info_init(struct ptlrpc_request *req,
2791 struct mdt_thread_info *info)
2795 info->mti_pill = &req->rq_pill;
2798 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2799 mdt_lock_handle_init(&info->mti_lh[i]);
2801 /* mdt device: it can be NULL while CONNECT */
2802 if (req->rq_export) {
2803 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2804 info->mti_exp = req->rq_export;
2806 info->mti_mdt = NULL;
2807 info->mti_env = req->rq_svc_thread->t_env;
2808 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2810 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2811 info->mti_big_buf = LU_BUF_NULL;
2812 info->mti_body = NULL;
2813 info->mti_object = NULL;
2814 info->mti_dlm_req = NULL;
2815 info->mti_has_trans = 0;
2816 info->mti_cross_ref = 0;
2817 info->mti_opdata = 0;
2818 info->mti_big_lmm_used = 0;
2820 info->mti_spec.no_create = 0;
2821 info->mti_spec.sp_rm_entry = 0;
2823 info->mti_spec.u.sp_ea.eadata = NULL;
2824 info->mti_spec.u.sp_ea.eadatalen = 0;
2827 void mdt_thread_info_fini(struct mdt_thread_info *info)
2831 if (info->mti_object != NULL) {
2832 mdt_object_put(info->mti_env, info->mti_object);
2833 info->mti_object = NULL;
2836 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2837 mdt_lock_handle_fini(&info->mti_lh[i]);
2838 info->mti_env = NULL;
2839 info->mti_pill = NULL;
2840 info->mti_exp = NULL;
2842 if (unlikely(info->mti_big_buf.lb_buf != NULL))
2843 lu_buf_free(&info->mti_big_buf);
2846 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
2848 struct mdt_thread_info *mti;
2849 struct lustre_capa *lc;
2851 mti = mdt_th_info(tsi->tsi_env);
2852 LASSERT(mti != NULL);
2854 mdt_thread_info_init(tgt_ses_req(tsi), mti);
2855 if (tsi->tsi_corpus != NULL) {
2856 struct req_capsule *pill = tsi->tsi_pill;
2858 mti->mti_object = mdt_obj(tsi->tsi_corpus);
2859 lu_object_get(tsi->tsi_corpus);
2862 * XXX: must be part of tgt_mdt_body_unpack but moved here
2863 * due to mdt_set_capainfo().
2865 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2866 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT) > 0) {
2867 lc = req_capsule_client_get(pill, &RMF_CAPA1);
2868 mdt_set_capainfo(mti, 0, &tsi->tsi_mdt_body->mbo_fid1,
2872 mti->mti_body = tsi->tsi_mdt_body;
2873 mti->mti_dlm_req = tsi->tsi_dlm_req;
2878 static int mdt_tgt_connect(struct tgt_session_info *tsi)
2880 struct ptlrpc_request *req = tgt_ses_req(tsi);
2885 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_DELAY_CONDITIONAL) &&
2887 tsi2mdt_info(tsi)->mti_mdt->mdt_seq_site.ss_node_id)
2888 schedule_timeout_and_set_state(TASK_UNINTERRUPTIBLE, HZ * 3);
2890 rc = tgt_connect(tsi);
2894 rc = mdt_init_idmap(tsi);
2899 obd_disconnect(class_export_get(req->rq_export));
2918 static int mdt_intent_getattr(enum mdt_it_code opcode,
2919 struct mdt_thread_info *info,
2920 struct ldlm_lock **,
2923 static int mdt_intent_getxattr(enum mdt_it_code opcode,
2924 struct mdt_thread_info *info,
2925 struct ldlm_lock **lockp,
2928 static int mdt_intent_layout(enum mdt_it_code opcode,
2929 struct mdt_thread_info *info,
2930 struct ldlm_lock **,
2932 static int mdt_intent_reint(enum mdt_it_code opcode,
2933 struct mdt_thread_info *info,
2934 struct ldlm_lock **,
2937 static struct mdt_it_flavor {
2938 const struct req_format *it_fmt;
2940 int (*it_act)(enum mdt_it_code ,
2941 struct mdt_thread_info *,
2942 struct ldlm_lock **,
2945 } mdt_it_flavor[] = {
2947 .it_fmt = &RQF_LDLM_INTENT,
2948 /*.it_flags = HABEO_REFERO,*/
2950 .it_act = mdt_intent_reint,
2951 .it_reint = REINT_OPEN
2954 .it_fmt = &RQF_LDLM_INTENT,
2956 * OCREAT is not a MUTABOR request as if the file
2958 * We do the extra check of OBD_CONNECT_RDONLY in
2959 * mdt_reint_open() when we really need to create
2963 .it_act = mdt_intent_reint,
2964 .it_reint = REINT_OPEN
2967 .it_fmt = &RQF_LDLM_INTENT,
2968 .it_flags = MUTABOR,
2969 .it_act = mdt_intent_reint,
2970 .it_reint = REINT_CREATE
2972 [MDT_IT_GETATTR] = {
2973 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2974 .it_flags = HABEO_REFERO,
2975 .it_act = mdt_intent_getattr
2977 [MDT_IT_READDIR] = {
2983 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2984 .it_flags = HABEO_REFERO,
2985 .it_act = mdt_intent_getattr
2988 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
2989 .it_flags = MUTABOR,
2991 .it_reint = REINT_UNLINK
2995 .it_flags = MUTABOR,
2998 [MDT_IT_GETXATTR] = {
2999 .it_fmt = &RQF_LDLM_INTENT_GETXATTR,
3000 .it_flags = HABEO_CORPUS,
3001 .it_act = mdt_intent_getxattr
3004 .it_fmt = &RQF_LDLM_INTENT_LAYOUT,
3006 .it_act = mdt_intent_layout
3011 mdt_intent_lock_replace(struct mdt_thread_info *info,
3012 struct ldlm_lock **lockp,
3013 struct mdt_lock_handle *lh,
3016 struct ptlrpc_request *req = mdt_info_req(info);
3017 struct ldlm_lock *lock = *lockp;
3018 struct ldlm_lock *new_lock;
3020 /* If possible resent found a lock, @lh is set to its handle */
3021 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3023 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3024 lh->mlh_reg_lh.cookie = 0;
3028 LASSERTF(new_lock != NULL,
3029 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
3032 * If we've already given this lock to a client once, then we should
3033 * have no readers or writers. Otherwise, we should have one reader
3034 * _or_ writer ref (which will be zeroed below) before returning the
3037 if (new_lock->l_export == req->rq_export) {
3038 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3040 LASSERT(new_lock->l_export == NULL);
3041 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3046 if (new_lock->l_export == req->rq_export) {
3048 * Already gave this to the client, which means that we
3049 * reconstructed a reply.
3051 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3054 LDLM_LOCK_RELEASE(new_lock);
3055 lh->mlh_reg_lh.cookie = 0;
3056 RETURN(ELDLM_LOCK_REPLACED);
3060 * Fixup the lock to be given to the client.
3062 lock_res_and_lock(new_lock);
3063 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3064 * possible blocking AST. */
3065 while (new_lock->l_readers > 0) {
3066 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3067 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3068 new_lock->l_readers--;
3070 while (new_lock->l_writers > 0) {
3071 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3072 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3073 new_lock->l_writers--;
3076 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3077 new_lock->l_blocking_ast = lock->l_blocking_ast;
3078 new_lock->l_completion_ast = lock->l_completion_ast;
3079 new_lock->l_remote_handle = lock->l_remote_handle;
3080 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3082 unlock_res_and_lock(new_lock);
3084 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3085 &new_lock->l_remote_handle,
3086 &new_lock->l_exp_hash);
3088 LDLM_LOCK_RELEASE(new_lock);
3089 lh->mlh_reg_lh.cookie = 0;
3091 RETURN(ELDLM_LOCK_REPLACED);
3094 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3095 struct ldlm_lock *new_lock,
3096 struct mdt_lock_handle *lh,
3099 struct ptlrpc_request *req = mdt_info_req(info);
3100 struct ldlm_request *dlmreq;
3102 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3105 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3107 /* Check if this is a resend case (MSG_RESENT is set on RPC) and a
3108 * lock was found by ldlm_handle_enqueue(); if so @lh must be
3110 if (flags & LDLM_FL_RESENT) {
3111 lh->mlh_reg_lh.cookie = new_lock->l_handle.h_cookie;
3112 lh->mlh_reg_mode = new_lock->l_granted_mode;
3114 LDLM_DEBUG(new_lock, "Restoring lock cookie");
3115 DEBUG_REQ(D_DLMTRACE, req, "restoring lock cookie "LPX64,
3116 lh->mlh_reg_lh.cookie);
3121 * If the xid matches, then we know this is a resent request, and allow
3122 * it. (It's probably an OPEN, for which we don't send a lock.
3124 if (req_xid_is_last(req))
3128 * This remote handle isn't enqueued, so we never received or processed
3129 * this request. Clear MSG_RESENT, because it can be handled like any
3130 * normal request now.
3132 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3134 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
3135 dlmreq->lock_handle[0].cookie);
3138 static int mdt_intent_getxattr(enum mdt_it_code opcode,
3139 struct mdt_thread_info *info,
3140 struct ldlm_lock **lockp,
3143 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3144 struct ldlm_reply *ldlm_rep = NULL;
3148 * Initialize lhc->mlh_reg_lh either from a previously granted lock
3149 * (for the resend case) or a new lock. Below we will use it to
3150 * replace the original lock.
3152 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3153 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3154 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
3155 rc = mdt_object_lock(info, info->mti_object, lhc,
3156 MDS_INODELOCK_XATTR,
3162 grc = mdt_getxattr(info);
3164 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3166 if (mdt_info_req(info)->rq_repmsg != NULL)
3167 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3168 if (ldlm_rep == NULL)
3169 RETURN(err_serious(-EFAULT));
3171 ldlm_rep->lock_policy_res2 = grc;
3176 static int mdt_intent_getattr(enum mdt_it_code opcode,
3177 struct mdt_thread_info *info,
3178 struct ldlm_lock **lockp,
3181 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3183 struct ldlm_reply *ldlm_rep;
3184 struct mdt_body *reqbody;
3185 struct mdt_body *repbody;
3189 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3192 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3195 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
3196 repbody->mbo_eadatasize = 0;
3197 repbody->mbo_aclsize = 0;
3201 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
3203 case MDT_IT_GETATTR:
3204 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
3208 CERROR("Unsupported intent (%d)\n", opcode);
3209 GOTO(out_shrink, rc = -EINVAL);
3212 rc = mdt_init_ucred(info, reqbody);
3214 GOTO(out_shrink, rc);
3216 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3217 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3219 /* Get lock from request for possible resent case. */
3220 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3222 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3223 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3225 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3226 ldlm_rep->lock_policy_res2 = 0;
3227 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3228 ldlm_rep->lock_policy_res2) {
3229 lhc->mlh_reg_lh.cookie = 0ull;
3230 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3233 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3236 mdt_exit_ucred(info);
3238 mdt_client_compatibility(info);
3239 rc2 = mdt_fix_reply(info);
3245 static int mdt_intent_layout(enum mdt_it_code opcode,
3246 struct mdt_thread_info *info,
3247 struct ldlm_lock **lockp,
3250 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_LAYOUT];
3251 struct layout_intent *layout;
3253 struct mdt_object *obj = NULL;
3257 if (opcode != MDT_IT_LAYOUT) {
3258 CERROR("%s: Unknown intent (%d)\n", mdt_obd_name(info->mti_mdt),
3263 fid = &info->mti_tmp_fid2;
3264 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
3266 /* Get lock from request for possible resent case. */
3267 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3269 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
3271 RETURN(PTR_ERR(obj));
3273 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
3274 /* get the length of lsm */
3275 rc = mdt_attr_get_eabuf_size(info, obj);
3277 mdt_object_put(info->mti_env, obj);
3281 if (rc > info->mti_mdt->mdt_max_mdsize)
3282 info->mti_mdt->mdt_max_mdsize = rc;
3285 mdt_object_put(info->mti_env, obj);
3287 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
3288 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER, rc);
3289 rc = req_capsule_server_pack(info->mti_pill);
3293 if (lustre_handle_is_used(&lhc->mlh_reg_lh))
3294 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3296 layout = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
3297 LASSERT(layout != NULL);
3298 if (layout->li_opc == LAYOUT_INTENT_ACCESS)
3299 /* return to normal/resent ldlm handling */
3302 CERROR("%s: Unsupported layout intent (%d)\n",
3303 mdt_obd_name(info->mti_mdt), layout->li_opc);
3307 static int mdt_intent_reint(enum mdt_it_code opcode,
3308 struct mdt_thread_info *info,
3309 struct ldlm_lock **lockp,
3312 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3313 struct ldlm_reply *rep = NULL;
3317 static const struct req_format *intent_fmts[REINT_MAX] = {
3318 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3319 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3324 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
3328 if (mdt_it_flavor[opcode].it_reint != opc) {
3329 CERROR("Reint code %ld doesn't match intent: %d\n",
3331 RETURN(err_serious(-EPROTO));
3334 /* Get lock from request for possible resent case. */
3335 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3337 rc = mdt_reint_internal(info, lhc, opc);
3339 /* Check whether the reply has been packed successfully. */
3340 if (mdt_info_req(info)->rq_repmsg != NULL)
3341 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3343 RETURN(err_serious(-EFAULT));
3345 /* MDC expects this in any case */
3347 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3349 /* the open lock or the lock for cross-ref object should be
3350 * returned to the client */
3351 if (rc == -EREMOTE || mdt_get_disposition(rep, DISP_OPEN_LOCK)) {
3352 LASSERT(lustre_handle_is_used(&lhc->mlh_reg_lh));
3353 rep->lock_policy_res2 = 0;
3354 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3358 rep->lock_policy_res2 = clear_serious(rc);
3360 if (rep->lock_policy_res2 == -ENOENT &&
3361 mdt_get_disposition(rep, DISP_LOOKUP_NEG))
3362 rep->lock_policy_res2 = 0;
3364 if (rc == -ENOTCONN || rc == -ENODEV ||
3365 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3367 * If it is the disconnect error (ENODEV & ENOCONN), the error
3368 * will be returned by rq_status, and client at ptlrpc layer
3369 * will detect this, then disconnect, reconnect the import
3370 * immediately, instead of impacting the following the rpc.
3372 lhc->mlh_reg_lh.cookie = 0ull;
3376 * For other cases, the error will be returned by intent.
3377 * and client will retrieve the result from intent.
3380 * FIXME: when open lock is finished, that should be
3383 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3384 LASSERTF(rc == 0, "Error occurred but lock handle "
3385 "is still in use, rc = %d\n", rc);
3386 rep->lock_policy_res2 = 0;
3387 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3390 lhc->mlh_reg_lh.cookie = 0ull;
3391 RETURN(ELDLM_LOCK_ABORTED);
3396 static int mdt_intent_code(long itcode)
3404 case IT_OPEN|IT_CREAT:
3411 rc = MDT_IT_READDIR;
3414 rc = MDT_IT_GETATTR;
3426 rc = MDT_IT_GETXATTR;
3431 case IT_QUOTA_DQACQ:
3436 CERROR("Unknown intent opcode: %ld\n", itcode);
3443 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
3444 struct ldlm_lock **lockp, __u64 flags)
3446 struct req_capsule *pill;
3447 struct mdt_it_flavor *flv;
3452 opc = mdt_intent_code(itopc);
3456 pill = info->mti_pill;
3458 if (opc == MDT_IT_QUOTA) {
3459 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
3462 RETURN(-EOPNOTSUPP);
3464 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
3465 /* pass the request to quota master */
3466 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
3467 mdt_info_req(info), lockp,
3472 flv = &mdt_it_flavor[opc];
3473 if (flv->it_fmt != NULL)
3474 req_capsule_extend(pill, flv->it_fmt);
3476 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
3478 struct ptlrpc_request *req = mdt_info_req(info);
3479 if (flv->it_flags & MUTABOR &&
3480 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
3483 if (rc == 0 && flv->it_act != NULL) {
3484 struct ldlm_reply *rep;
3486 /* execute policy */
3487 rc = flv->it_act(opc, info, lockp, flags);
3489 /* Check whether the reply has been packed successfully. */
3490 if (mdt_info_req(info)->rq_repmsg != NULL) {
3491 rep = req_capsule_server_get(info->mti_pill,
3493 rep->lock_policy_res2 =
3494 ptlrpc_status_hton(rep->lock_policy_res2);
3502 static int mdt_intent_policy(struct ldlm_namespace *ns,
3503 struct ldlm_lock **lockp, void *req_cookie,
3504 ldlm_mode_t mode, __u64 flags, void *data)
3506 struct tgt_session_info *tsi;
3507 struct mdt_thread_info *info;
3508 struct ptlrpc_request *req = req_cookie;
3509 struct ldlm_intent *it;
3510 struct req_capsule *pill;
3515 LASSERT(req != NULL);
3517 tsi = tgt_ses_info(req->rq_svc_thread->t_env);
3519 info = tsi2mdt_info(tsi);
3520 LASSERT(info != NULL);
3521 pill = info->mti_pill;
3522 LASSERT(pill->rc_req == req);
3524 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
3525 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
3526 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
3528 rc = mdt_intent_opc(it->opc, info, lockp, flags);
3532 /* Lock without inodebits makes no sense and will oops
3533 * later in ldlm. Let's check it now to see if we have
3534 * ibits corrupted somewhere in mdt_intent_opc().
3535 * The case for client miss to set ibits has been
3536 * processed by others. */
3537 LASSERT(ergo(info->mti_dlm_req->lock_desc.l_resource.\
3538 lr_type == LDLM_IBITS,
3539 info->mti_dlm_req->lock_desc.\
3540 l_policy_data.l_inodebits.bits != 0));
3542 rc = err_serious(-EFAULT);
3544 /* No intent was provided */
3545 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
3546 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
3547 rc = req_capsule_server_pack(pill);
3549 rc = err_serious(rc);
3551 mdt_thread_info_fini(info);
3555 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
3557 struct seq_server_site *ss = mdt_seq_site(mdt);
3559 if (ss->ss_node_id == 0)
3562 if (ss->ss_client_seq != NULL) {
3563 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
3564 ss->ss_client_seq->lcs_exp = NULL;
3567 if (ss->ss_server_fld != NULL) {
3568 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
3569 ss->ss_server_fld->lsf_control_exp = NULL;
3573 static void mdt_seq_fini_cli(struct mdt_device *mdt)
3575 struct seq_server_site *ss = mdt_seq_site(mdt);
3580 if (ss->ss_server_seq != NULL)
3581 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
3584 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
3586 mdt_seq_fini_cli(mdt);
3587 mdt_deregister_seq_exp(mdt);
3589 return seq_site_fini(env, mdt_seq_site(mdt));
3593 * It will retrieve its FLDB entries from MDT0, and it only happens
3594 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
3595 * and it needs to refresh FLDB from the MDT0.
3597 static int mdt_register_lwp_callback(void *data)
3600 struct mdt_device *mdt = data;
3601 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
3605 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
3607 if (!likely(fld->lsf_new))
3610 rc = lu_env_init(&env, LCT_MD_THREAD);
3612 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
3616 rc = fld_update_from_controller(&env, fld);
3618 CERROR("%s: cannot update controller: rc = %d\n",
3619 mdt_obd_name(mdt), rc);
3627 static int mdt_register_seq_exp(struct mdt_device *mdt)
3629 struct seq_server_site *ss = mdt_seq_site(mdt);
3630 char *lwp_name = NULL;
3633 if (ss->ss_node_id == 0)
3636 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
3637 if (lwp_name == NULL)
3638 GOTO(out_free, rc = -ENOMEM);
3640 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
3644 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
3649 rc = lustre_register_lwp_item(lwp_name,
3650 &ss->ss_server_fld->lsf_control_exp,
3651 mdt_register_lwp_callback, mdt);
3653 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
3654 ss->ss_client_seq->lcs_exp = NULL;
3658 if (lwp_name != NULL)
3659 OBD_FREE(lwp_name, MAX_OBD_NAME);
3665 * Init client sequence manager which is used by local MDS to talk to sequence
3666 * controller on remote node.
3668 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
3670 struct seq_server_site *ss = mdt_seq_site(mdt);
3675 /* check if this is adding the first MDC and controller is not yet
3677 OBD_ALLOC_PTR(ss->ss_client_seq);
3678 if (ss->ss_client_seq == NULL)
3681 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3682 if (prefix == NULL) {
3683 OBD_FREE_PTR(ss->ss_client_seq);
3684 ss->ss_client_seq = NULL;
3688 /* Note: seq_client_fini will be called in seq_site_fini */
3689 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
3690 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
3691 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
3693 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3695 OBD_FREE_PTR(ss->ss_client_seq);
3696 ss->ss_client_seq = NULL;
3700 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
3705 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
3707 struct seq_server_site *ss;
3711 ss = mdt_seq_site(mdt);
3712 /* init sequence controller server(MDT0) */
3713 if (ss->ss_node_id == 0) {
3714 OBD_ALLOC_PTR(ss->ss_control_seq);
3715 if (ss->ss_control_seq == NULL)
3718 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
3719 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
3722 GOTO(out_seq_fini, rc);
3725 /* Init normal sequence server */
3726 OBD_ALLOC_PTR(ss->ss_server_seq);
3727 if (ss->ss_server_seq == NULL)
3728 GOTO(out_seq_fini, rc = -ENOMEM);
3730 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
3731 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
3733 GOTO(out_seq_fini, rc);
3735 /* init seq client for seq server to talk to seq controller(MDT0) */
3736 rc = mdt_seq_init_cli(env, mdt);
3738 GOTO(out_seq_fini, rc);
3740 if (ss->ss_node_id != 0)
3741 /* register controler export through lwp */
3742 rc = mdt_register_seq_exp(mdt);
3747 mdt_seq_fini(env, mdt);
3755 static int mdt_fld_fini(const struct lu_env *env,
3756 struct mdt_device *m)
3758 struct seq_server_site *ss = mdt_seq_site(m);
3761 if (ss && ss->ss_server_fld) {
3762 fld_server_fini(env, ss->ss_server_fld);
3763 OBD_FREE_PTR(ss->ss_server_fld);
3764 ss->ss_server_fld = NULL;
3770 static int mdt_fld_init(const struct lu_env *env,
3772 struct mdt_device *m)
3774 struct seq_server_site *ss;
3778 ss = mdt_seq_site(m);
3780 OBD_ALLOC_PTR(ss->ss_server_fld);
3781 if (ss->ss_server_fld == NULL)
3782 RETURN(rc = -ENOMEM);
3784 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
3787 OBD_FREE_PTR(ss->ss_server_fld);
3788 ss->ss_server_fld = NULL;
3795 static void mdt_stack_pre_fini(const struct lu_env *env,
3796 struct mdt_device *m, struct lu_device *top)
3798 struct lustre_cfg_bufs *bufs;
3799 struct lustre_cfg *lcfg;
3800 struct mdt_thread_info *info;
3805 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3806 LASSERT(info != NULL);
3808 bufs = &info->mti_u.bufs;
3810 LASSERT(m->mdt_child_exp);
3811 LASSERT(m->mdt_child_exp->exp_obd);
3813 /* process cleanup, pass mdt obd name to get obd umount flags */
3814 /* XXX: this is needed because all layers are referenced by
3815 * objects (some of them are pinned by osd, for example *
3816 * the proper solution should be a model where object used
3817 * by osd only doesn't have mdt/mdd slices -bzzz */
3818 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
3819 lustre_cfg_bufs_set_string(bufs, 1, NULL);
3820 lcfg = lustre_cfg_new(LCFG_PRE_CLEANUP, bufs);
3822 CERROR("%s: cannot alloc lcfg\n", mdt_obd_name(m));
3825 top->ld_ops->ldo_process_config(env, top, lcfg);
3826 lustre_cfg_free(lcfg);
3830 static void mdt_stack_fini(const struct lu_env *env,
3831 struct mdt_device *m, struct lu_device *top)
3833 struct obd_device *obd = mdt2obd_dev(m);
3834 struct lustre_cfg_bufs *bufs;
3835 struct lustre_cfg *lcfg;
3836 struct mdt_thread_info *info;
3840 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3841 LASSERT(info != NULL);
3843 lu_dev_del_linkage(top->ld_site, top);
3845 lu_site_purge(env, top->ld_site, -1);
3847 bufs = &info->mti_u.bufs;
3848 /* process cleanup, pass mdt obd name to get obd umount flags */
3849 /* another purpose is to let all layers to release their objects */
3850 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
3855 lustre_cfg_bufs_set_string(bufs, 1, flags);
3856 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
3858 CERROR("Cannot alloc lcfg!\n");
3862 top->ld_ops->ldo_process_config(env, top, lcfg);
3863 lustre_cfg_free(lcfg);
3865 lu_site_purge(env, top->ld_site, -1);
3867 m->mdt_child = NULL;
3868 m->mdt_bottom = NULL;
3870 obd_disconnect(m->mdt_child_exp);
3871 m->mdt_child_exp = NULL;
3873 obd_disconnect(m->mdt_bottom_exp);
3874 m->mdt_child_exp = NULL;
3877 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
3878 const char *next, struct obd_export **exp)
3880 struct obd_connect_data *data = NULL;
3881 struct obd_device *obd;
3885 OBD_ALLOC_PTR(data);
3887 GOTO(out, rc = -ENOMEM);
3889 obd = class_name2obd(next);
3891 CERROR("%s: can't locate next device: %s\n",
3892 mdt_obd_name(m), next);
3893 GOTO(out, rc = -ENOTCONN);
3896 data->ocd_connect_flags = OBD_CONNECT_VERSION;
3897 data->ocd_version = LUSTRE_VERSION_CODE;
3899 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
3901 CERROR("%s: cannot connect to next dev %s (%d)\n",
3902 mdt_obd_name(m), next, rc);
3912 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
3913 struct lustre_cfg *cfg)
3915 char *dev = lustre_cfg_string(cfg, 0);
3916 int rc, name_size, uuid_size;
3917 char *name, *uuid, *p;
3918 struct lustre_cfg_bufs *bufs;
3919 struct lustre_cfg *lcfg;
3920 struct obd_device *obd;
3921 struct lustre_profile *lprof;
3922 struct lu_site *site;
3925 /* in 1.8 we had the only device in the stack - MDS.
3926 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
3927 * in 2.3 OSD is instantiated by obd_mount.c, so we need
3928 * to generate names and setup MDT, MDD. MDT will be using
3929 * generated name to connect to MDD. for MDD the next device
3930 * will be LOD with name taken from so called "profile" which
3931 * is generated by mount_option line
3933 * 1.8 MGS generates config. commands like this:
3934 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
3935 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
3936 * 2.0 MGS generates config. commands like this:
3937 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
3938 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
3939 * 3:lustre-MDT0000-mdtlov 4:f
3941 * we generate MDD name from MDT one, just replacing T with D
3943 * after all the preparations, the logical equivalent will be
3944 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
3945 * 3:lustre-MDT0000-mdtlov 4:f
3946 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
3947 * 3:lustre-MDD0000 4:f
3949 * notice we build the stack from down to top: MDD first, then MDT */
3951 name_size = MAX_OBD_NAME;
3952 uuid_size = MAX_OBD_NAME;
3954 OBD_ALLOC(name, name_size);
3955 OBD_ALLOC(uuid, uuid_size);
3956 if (name == NULL || uuid == NULL)
3957 GOTO(cleanup_mem, rc = -ENOMEM);
3959 OBD_ALLOC_PTR(bufs);
3961 GOTO(cleanup_mem, rc = -ENOMEM);
3964 p = strstr(name, "-MDT");
3966 GOTO(free_bufs, rc = -ENOMEM);
3969 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
3971 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
3972 if (lprof == NULL || lprof->lp_dt == NULL) {
3973 CERROR("can't find the profile: %s\n",
3974 lustre_cfg_string(cfg, 0));
3975 GOTO(free_bufs, rc = -EINVAL);
3978 lustre_cfg_bufs_reset(bufs, name);
3979 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
3980 lustre_cfg_bufs_set_string(bufs, 2, uuid);
3981 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
3983 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
3985 GOTO(free_bufs, rc = -ENOMEM);
3987 rc = class_attach(lcfg);
3989 GOTO(lcfg_cleanup, rc);
3991 obd = class_name2obd(name);
3993 CERROR("Can not find obd %s (%s in config)\n",
3994 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
3995 GOTO(class_detach, rc = -EINVAL);
3998 lustre_cfg_free(lcfg);
4000 lustre_cfg_bufs_reset(bufs, name);
4001 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4002 lustre_cfg_bufs_set_string(bufs, 2, dev);
4003 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4005 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4007 rc = class_setup(obd, lcfg);
4009 GOTO(class_detach, rc);
4011 /* connect to MDD we just setup */
4012 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
4014 GOTO(class_detach, rc);
4016 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
4018 LASSERT(mdt_lu_site(mdt) == NULL);
4019 mdt->mdt_lu_dev.ld_site = site;
4020 site->ls_top_dev = &mdt->mdt_lu_dev;
4021 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
4023 /* now connect to bottom OSD */
4024 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
4025 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
4027 GOTO(class_detach, rc);
4029 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
4031 rc = lu_env_refill((struct lu_env *)env);
4033 CERROR("Failure to refill session: '%d'\n", rc);
4035 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
4040 class_detach(obd, lcfg);
4042 lustre_cfg_free(lcfg);
4047 OBD_FREE(name, name_size);
4049 OBD_FREE(uuid, uuid_size);
4053 /* setup quota master target on MDT0 */
4054 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
4055 struct lustre_cfg *cfg)
4057 struct obd_device *obd;
4058 char *dev = lustre_cfg_string(cfg, 0);
4059 char *qmtname, *uuid, *p;
4060 struct lustre_cfg_bufs *bufs;
4061 struct lustre_cfg *lcfg;
4062 struct lustre_profile *lprof;
4063 struct obd_connect_data *data;
4067 LASSERT(mdt->mdt_qmt_exp == NULL);
4068 LASSERT(mdt->mdt_qmt_dev == NULL);
4070 /* quota master is on MDT0 only for now */
4071 if (mdt->mdt_seq_site.ss_node_id != 0)
4074 /* MGS generates config commands which look as follows:
4075 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4076 * 3:lustre-MDT0000-mdtlov 4:f
4078 * We generate the QMT name from the MDT one, just replacing MD with QM
4079 * after all the preparations, the logical equivalent will be:
4080 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
4081 * 3:lustre-MDT0000-osd 4:f */
4082 OBD_ALLOC(qmtname, MAX_OBD_NAME);
4083 OBD_ALLOC(uuid, UUID_MAX);
4084 OBD_ALLOC_PTR(bufs);
4085 OBD_ALLOC_PTR(data);
4086 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
4087 GOTO(cleanup_mem, rc = -ENOMEM);
4089 strcpy(qmtname, dev);
4090 p = strstr(qmtname, "-MDT");
4092 GOTO(cleanup_mem, rc = -ENOMEM);
4093 /* replace MD with QM */
4097 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
4099 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4100 if (lprof == NULL || lprof->lp_dt == NULL) {
4101 CERROR("can't find profile for %s\n",
4102 lustre_cfg_string(cfg, 0));
4103 GOTO(cleanup_mem, rc = -EINVAL);
4106 lustre_cfg_bufs_reset(bufs, qmtname);
4107 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
4108 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4109 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4111 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
4113 GOTO(cleanup_mem, rc = -ENOMEM);
4115 rc = class_attach(lcfg);
4117 GOTO(lcfg_cleanup, rc);
4119 obd = class_name2obd(qmtname);
4121 CERROR("Can not find obd %s (%s in config)\n", qmtname,
4122 lustre_cfg_string(cfg, 0));
4123 GOTO(class_detach, rc = -EINVAL);
4126 lustre_cfg_free(lcfg);
4128 lustre_cfg_bufs_reset(bufs, qmtname);
4129 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4130 lustre_cfg_bufs_set_string(bufs, 2, dev);
4132 /* for quota, the next device should be the OSD device */
4133 lustre_cfg_bufs_set_string(bufs, 3,
4134 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
4136 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4138 rc = class_setup(obd, lcfg);
4140 GOTO(class_detach, rc);
4142 mdt->mdt_qmt_dev = obd->obd_lu_dev;
4144 /* configure local quota objects */
4145 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
4149 GOTO(class_cleanup, rc);
4151 /* connect to quota master target */
4152 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4153 data->ocd_version = LUSTRE_VERSION_CODE;
4154 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
4157 CERROR("cannot connect to quota master device %s (%d)\n",
4159 GOTO(class_cleanup, rc);
4165 class_manual_cleanup(obd);
4166 mdt->mdt_qmt_dev = NULL;
4170 class_detach(obd, lcfg);
4172 lustre_cfg_free(lcfg);
4177 OBD_FREE(qmtname, MAX_OBD_NAME);
4179 OBD_FREE(uuid, UUID_MAX);
4185 /* Shutdown quota master target associated with mdt */
4186 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
4190 if (mdt->mdt_qmt_exp == NULL)
4192 LASSERT(mdt->mdt_qmt_dev != NULL);
4194 /* the qmt automatically shuts down when the mdt disconnects */
4195 obd_disconnect(mdt->mdt_qmt_exp);
4196 mdt->mdt_qmt_exp = NULL;
4197 mdt->mdt_qmt_dev = NULL;
4201 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
4202 * for now. This will be removed along with converting rest of MDT code
4203 * to use tgt_session_info */
4204 int mdt_tgt_getxattr(struct tgt_session_info *tsi)
4206 struct mdt_thread_info *info = tsi2mdt_info(tsi);
4209 rc = mdt_getxattr(info);
4211 mdt_thread_info_fini(info);
4215 static struct tgt_handler mdt_tgt_handlers[] = {
4216 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4217 0, MDS_CONNECT, mdt_tgt_connect,
4218 &RQF_CONNECT, LUSTRE_OBD_VERSION),
4219 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4220 0, MDS_DISCONNECT, tgt_disconnect,
4221 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
4222 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4223 HABEO_REFERO, MDS_SET_INFO, mdt_set_info,
4224 &RQF_OBD_SET_INFO, LUSTRE_MDS_VERSION),
4225 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
4226 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_GETSTATUS, mdt_getstatus),
4227 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETATTR, mdt_getattr),
4228 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_GETATTR_NAME,
4230 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETXATTR, mdt_tgt_getxattr),
4231 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_STATFS, mdt_statfs),
4232 TGT_MDT_HDL(0 | MUTABOR, MDS_REINT, mdt_reint),
4233 TGT_MDT_HDL(HABEO_CORPUS, MDS_CLOSE, mdt_close),
4234 TGT_MDT_HDL(HABEO_CORPUS, MDS_DONE_WRITING,
4236 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_READPAGE, mdt_readpage),
4237 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_SYNC, mdt_sync),
4238 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
4239 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_PROGRESS,
4241 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_REGISTER,
4242 mdt_hsm_ct_register),
4243 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_UNREGISTER,
4244 mdt_hsm_ct_unregister),
4245 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_STATE_GET,
4247 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_STATE_SET,
4249 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_ACTION, mdt_hsm_action),
4250 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_REQUEST,
4252 TGT_MDT_HDL(HABEO_CLAVIS | HABEO_CORPUS | HABEO_REFERO | MUTABOR,
4257 static struct tgt_handler mdt_sec_ctx_ops[] = {
4258 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
4259 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
4260 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
4263 static struct tgt_handler mdt_quota_ops[] = {
4264 TGT_QUOTA_HDL(HABEO_REFERO, QUOTA_DQACQ, mdt_quota_dqacq),
4267 static struct tgt_opc_slice mdt_common_slice[] = {
4269 .tos_opc_start = MDS_FIRST_OPC,
4270 .tos_opc_end = MDS_LAST_OPC,
4271 .tos_hs = mdt_tgt_handlers
4274 .tos_opc_start = OBD_FIRST_OPC,
4275 .tos_opc_end = OBD_LAST_OPC,
4276 .tos_hs = tgt_obd_handlers
4279 .tos_opc_start = LDLM_FIRST_OPC,
4280 .tos_opc_end = LDLM_LAST_OPC,
4281 .tos_hs = tgt_dlm_handlers
4284 .tos_opc_start = SEC_FIRST_OPC,
4285 .tos_opc_end = SEC_LAST_OPC,
4286 .tos_hs = mdt_sec_ctx_ops
4289 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
4290 .tos_opc_end = OUT_UPDATE_LAST_OPC,
4291 .tos_hs = tgt_out_handlers
4294 .tos_opc_start = FLD_FIRST_OPC,
4295 .tos_opc_end = FLD_LAST_OPC,
4296 .tos_hs = fld_handlers
4299 .tos_opc_start = SEQ_FIRST_OPC,
4300 .tos_opc_end = SEQ_LAST_OPC,
4301 .tos_hs = seq_handlers
4304 .tos_opc_start = QUOTA_DQACQ,
4305 .tos_opc_end = QUOTA_LAST_OPC,
4306 .tos_hs = mdt_quota_ops
4309 .tos_opc_start = LLOG_FIRST_OPC,
4310 .tos_opc_end = LLOG_LAST_OPC,
4311 .tos_hs = tgt_llog_handlers
4314 .tos_opc_start = LFSCK_FIRST_OPC,
4315 .tos_opc_end = LFSCK_LAST_OPC,
4316 .tos_hs = tgt_lfsck_handlers
4324 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4326 struct md_device *next = m->mdt_child;
4327 struct lu_device *d = &m->mdt_lu_dev;
4328 struct obd_device *obd = mdt2obd_dev(m);
4329 struct lfsck_stop stop;
4332 stop.ls_status = LS_PAUSED;
4334 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
4336 target_recovery_fini(obd);
4337 ping_evictor_stop();
4338 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
4340 if (m->mdt_opts.mo_coordinator)
4341 mdt_hsm_cdt_stop(m);
4343 mdt_hsm_cdt_fini(m);
4345 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
4346 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4347 obd_exports_barrier(obd);
4348 obd_zombie_barrier();
4352 tgt_fini(env, &m->mdt_lut);
4353 mdt_fs_cleanup(env, m);
4354 upcall_cache_cleanup(m->mdt_identity_cache);
4355 m->mdt_identity_cache = NULL;
4357 if (m->mdt_namespace != NULL) {
4358 ldlm_namespace_free(m->mdt_namespace, NULL,
4359 d->ld_obd->obd_force);
4360 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
4363 mdt_quota_fini(env, m);
4365 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
4367 mdt_seq_fini(env, m);
4368 mdt_fld_fini(env, m);
4370 next->md_ops->mdo_init_capa_ctxt(env, next, 0, 0, 0, NULL);
4371 cfs_timer_disarm(&m->mdt_ck_timer);
4372 mdt_ck_thread_stop(m);
4377 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4379 LASSERT(atomic_read(&d->ld_ref) == 0);
4381 server_put_mount(mdt_obd_name(m), true);
4386 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4388 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4389 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4391 struct mdt_thread_info *info;
4392 struct obd_device *obd;
4393 const char *dev = lustre_cfg_string(cfg, 0);
4394 const char *num = lustre_cfg_string(cfg, 2);
4395 struct lustre_mount_info *lmi = NULL;
4396 struct lustre_sb_info *lsi;
4398 struct seq_server_site *ss_site;
4399 const char *identity_upcall = "NONE";
4400 struct md_device *next;
4406 lu_device_init(&m->mdt_lu_dev, ldt);
4408 * Environment (env) might be missing mdt_thread_key values at that
4409 * point, if device is allocated when mdt_thread_key is in QUIESCENT
4412 * Usually device allocation path doesn't use module key values, but
4413 * mdt has to do a lot of work here, so allocate key value.
4415 rc = lu_env_refill((struct lu_env *)env);
4419 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4420 LASSERT(info != NULL);
4422 obd = class_name2obd(dev);
4423 LASSERT(obd != NULL);
4425 m->mdt_max_mdsize = MAX_MD_SIZE; /* 4 stripes */
4427 m->mdt_som_conf = 0;
4429 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
4431 /* default is coordinator off, it is started through conf_param
4433 m->mdt_opts.mo_coordinator = 0;
4435 lmi = server_get_mount(dev);
4437 CERROR("Cannot get mount info for %s!\n", dev);
4440 lsi = s2lsi(lmi->lmi_sb);
4441 /* CMD is supported only in IAM mode */
4443 node_id = simple_strtol(num, NULL, 10);
4444 obd->u.obt.obt_magic = OBT_MAGIC;
4447 spin_lock_init(&m->mdt_ioepoch_lock);
4448 m->mdt_capa_timeout = CAPA_TIMEOUT;
4449 m->mdt_capa_alg = CAPA_HMAC_ALG_SHA1;
4450 m->mdt_ck_timeout = CAPA_KEY_TIMEOUT;
4451 m->mdt_squash.rsi_uid = 0;
4452 m->mdt_squash.rsi_gid = 0;
4453 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
4454 init_rwsem(&m->mdt_squash.rsi_sem);
4455 spin_lock_init(&m->mdt_osfs_lock);
4456 m->mdt_osfs_age = cfs_time_shift_64(-1000);
4457 m->mdt_enable_remote_dir = 0;
4458 m->mdt_enable_remote_dir_gid = 0;
4460 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
4461 m->mdt_lu_dev.ld_obd = obd;
4462 /* Set this lu_device to obd for error handling purposes. */
4463 obd->obd_lu_dev = &m->mdt_lu_dev;
4465 /* init the stack */
4466 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
4468 CERROR("%s: Can't init device stack, rc %d\n",
4469 mdt_obd_name(m), rc);
4474 ss_site = mdt_seq_site(m);
4475 s->ld_seq_site = ss_site;
4478 /* set server index */
4479 ss_site->ss_node_id = node_id;
4481 /* failover is the default
4482 * FIXME: we do not failout mds0/mgs, which may cause some problems.
4483 * assumed whose ss_node_id == 0 XXX
4485 obd->obd_replayable = 1;
4486 /* No connection accepted until configurations will finish */
4487 obd->obd_no_conn = 1;
4489 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
4490 char *str = lustre_cfg_string(cfg, 4);
4491 if (strchr(str, 'n')) {
4492 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
4493 obd->obd_replayable = 0;
4497 rc = mdt_fld_init(env, mdt_obd_name(m), m);
4499 GOTO(err_fini_stack, rc);
4501 rc = mdt_seq_init(env, m);
4503 GOTO(err_fini_fld, rc);
4505 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
4506 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
4507 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
4508 LDLM_NAMESPACE_SERVER,
4509 LDLM_NAMESPACE_GREEDY,
4511 if (m->mdt_namespace == NULL)
4512 GOTO(err_fini_seq, rc = -ENOMEM);
4514 m->mdt_namespace->ns_lvbp = m;
4515 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
4517 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
4518 /* set obd_namespace for compatibility with old code */
4519 obd->obd_namespace = m->mdt_namespace;
4521 cfs_timer_init(&m->mdt_ck_timer, mdt_ck_timer_callback, m);
4523 rc = mdt_hsm_cdt_init(m);
4525 CERROR("%s: error initializing coordinator, rc %d\n",
4526 mdt_obd_name(m), rc);
4527 GOTO(err_free_ns, rc);
4530 rc = mdt_ck_thread_start(m);
4532 GOTO(err_free_hsm, rc);
4534 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
4535 OBD_FAIL_MDS_ALL_REQUEST_NET,
4536 OBD_FAIL_MDS_ALL_REPLY_NET);
4540 rc = mdt_fs_setup(env, m, obd, lsi);
4544 tgt_adapt_sptlrpc_conf(&m->mdt_lut, 1);
4546 next = m->mdt_child;
4547 rc = next->md_ops->mdo_iocontrol(env, next, OBD_IOC_GET_MNTOPT, 0,
4550 GOTO(err_fs_cleanup, rc);
4552 if (mntopts & MNTOPT_USERXATTR)
4553 m->mdt_opts.mo_user_xattr = 1;
4555 m->mdt_opts.mo_user_xattr = 0;
4557 rc = next->md_ops->mdo_maxeasize_get(env, next, &m->mdt_max_ea_size);
4559 GOTO(err_fs_cleanup, rc);
4561 if (mntopts & MNTOPT_ACL)
4562 m->mdt_opts.mo_acl = 1;
4564 m->mdt_opts.mo_acl = 0;
4566 /* XXX: to support suppgid for ACL, we enable identity_upcall
4567 * by default, otherwise, maybe got unexpected -EACCESS. */
4568 if (m->mdt_opts.mo_acl)
4569 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
4571 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
4573 &mdt_identity_upcall_cache_ops);
4574 if (IS_ERR(m->mdt_identity_cache)) {
4575 rc = PTR_ERR(m->mdt_identity_cache);
4576 m->mdt_identity_cache = NULL;
4577 GOTO(err_fs_cleanup, rc);
4580 rc = mdt_procfs_init(m, dev);
4582 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
4583 GOTO(err_recovery, rc);
4586 rc = mdt_quota_init(env, m, cfg);
4588 GOTO(err_procfs, rc);
4590 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
4591 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
4592 "mdt_ldlm_client", m->mdt_ldlm_client);
4594 ping_evictor_start();
4596 /* recovery will be started upon mdt_prepare()
4597 * when the whole stack is complete and ready
4598 * to serve the requests */
4600 mdt_init_capa_ctxt(env, m);
4602 /* Reduce the initial timeout on an MDS because it doesn't need such
4603 * a long timeout as an OST does. Adaptive timeouts will adjust this
4604 * value appropriately. */
4605 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
4606 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
4612 target_recovery_fini(obd);
4613 upcall_cache_cleanup(m->mdt_identity_cache);
4614 m->mdt_identity_cache = NULL;
4616 mdt_fs_cleanup(env, m);
4618 tgt_fini(env, &m->mdt_lut);
4620 cfs_timer_disarm(&m->mdt_ck_timer);
4621 mdt_ck_thread_stop(m);
4623 mdt_hsm_cdt_fini(m);
4625 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
4626 obd->obd_namespace = m->mdt_namespace = NULL;
4628 mdt_seq_fini(env, m);
4630 mdt_fld_fini(env, m);
4632 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4635 server_put_mount(dev, true);
4639 /* For interoperability, the left element is old parameter, the right one
4640 * is the new version of the parameter, if some parameter is deprecated,
4641 * the new version should be set as NULL. */
4642 static struct cfg_interop_param mdt_interop_param[] = {
4643 { "mdt.group_upcall", NULL },
4644 { "mdt.quota_type", NULL },
4645 { "mdd.quota_type", NULL },
4646 { "mdt.rootsquash", "mdt.root_squash" },
4647 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
4651 /* used by MGS to process specific configurations */
4652 static int mdt_process_config(const struct lu_env *env,
4653 struct lu_device *d, struct lustre_cfg *cfg)
4655 struct mdt_device *m = mdt_dev(d);
4656 struct md_device *md_next = m->mdt_child;
4657 struct lu_device *next = md2lu_dev(md_next);
4661 switch (cfg->lcfg_command) {
4663 struct obd_device *obd = d->ld_obd;
4665 /* For interoperability */
4666 struct cfg_interop_param *ptr = NULL;
4667 struct lustre_cfg *old_cfg = NULL;
4670 param = lustre_cfg_string(cfg, 1);
4671 if (param == NULL) {
4672 CERROR("param is empty\n");
4677 ptr = class_find_old_param(param, mdt_interop_param);
4679 if (ptr->new_param == NULL) {
4681 CWARN("For interoperability, skip this %s."
4682 " It is obsolete.\n", ptr->old_param);
4686 CWARN("Found old param %s, changed it to %s.\n",
4687 ptr->old_param, ptr->new_param);
4690 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
4697 rc = class_process_proc_seq_param(PARAM_MDT, obd->obd_vars,
4699 if (rc > 0 || rc == -ENOSYS) {
4700 /* is it an HSM var ? */
4701 rc = class_process_proc_seq_param(PARAM_HSM,
4702 hsm_cdt_get_proc_vars(),
4704 if (rc > 0 || rc == -ENOSYS)
4705 /* we don't understand; pass it on */
4706 rc = next->ld_ops->ldo_process_config(env, next,
4710 if (old_cfg != NULL)
4711 lustre_cfg_free(cfg);
4716 /* others are passed further */
4717 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4723 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
4724 const struct lu_object_header *hdr,
4725 struct lu_device *d)
4727 struct mdt_object *mo;
4731 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
4733 struct lu_object *o;
4734 struct lu_object_header *h;
4737 h = &mo->mot_header;
4738 lu_object_header_init(h);
4739 lu_object_init(o, h, d);
4740 lu_object_add_top(h, o);
4741 o->lo_ops = &mdt_obj_ops;
4742 mutex_init(&mo->mot_ioepoch_mutex);
4743 mutex_init(&mo->mot_lov_mutex);
4744 init_rwsem(&mo->mot_open_sem);
4750 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
4751 const struct lu_object_conf *unused)
4753 struct mdt_device *d = mdt_dev(o->lo_dev);
4754 struct lu_device *under;
4755 struct lu_object *below;
4759 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
4760 PFID(lu_object_fid(o)));
4762 under = &d->mdt_child->md_lu_dev;
4763 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
4764 if (below != NULL) {
4765 lu_object_add(o, below);
4772 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
4774 struct mdt_object *mo = mdt_obj(o);
4775 struct lu_object_header *h;
4779 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
4780 PFID(lu_object_fid(o)));
4782 LASSERT(atomic_read(&mo->mot_open_count) == 0);
4783 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
4786 lu_object_header_fini(h);
4787 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
4792 static int mdt_object_print(const struct lu_env *env, void *cookie,
4793 lu_printer_t p, const struct lu_object *o)
4795 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
4796 return (*p)(env, cookie, LUSTRE_MDT_NAME"-object@%p(ioepoch="LPU64" "
4797 "flags="LPX64", epochcount=%d, writecount=%d)",
4798 mdto, mdto->mot_ioepoch, mdto->mot_flags,
4799 mdto->mot_ioepoch_count, mdto->mot_writecount);
4802 static int mdt_prepare(const struct lu_env *env,
4803 struct lu_device *pdev,
4804 struct lu_device *cdev)
4806 struct mdt_device *mdt = mdt_dev(cdev);
4807 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
4808 struct obd_device *obd = cdev->ld_obd;
4815 rc = next->ld_ops->ldo_prepare(env, cdev, next);
4819 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
4823 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
4827 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
4828 /* The LFSCK instance is registered just now, so it must be there when
4829 * register the namespace to such instance. */
4830 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
4832 if (mdt->mdt_seq_site.ss_node_id == 0) {
4833 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
4834 &mdt->mdt_md_root_fid);
4839 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
4840 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
4841 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
4842 LASSERT(obd->obd_no_conn);
4843 spin_lock(&obd->obd_dev_lock);
4844 obd->obd_no_conn = 0;
4845 spin_unlock(&obd->obd_dev_lock);
4847 if (obd->obd_recovering == 0)
4848 mdt_postrecov(env, mdt);
4853 const struct lu_device_operations mdt_lu_ops = {
4854 .ldo_object_alloc = mdt_object_alloc,
4855 .ldo_process_config = mdt_process_config,
4856 .ldo_prepare = mdt_prepare,
4859 static const struct lu_object_operations mdt_obj_ops = {
4860 .loo_object_init = mdt_object_init,
4861 .loo_object_free = mdt_object_free,
4862 .loo_object_print = mdt_object_print
4865 static int mdt_obd_set_info_async(const struct lu_env *env,
4866 struct obd_export *exp,
4867 __u32 keylen, void *key,
4868 __u32 vallen, void *val,
4869 struct ptlrpc_request_set *set)
4875 if (KEY_IS(KEY_SPTLRPC_CONF)) {
4876 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp), 0);
4884 * Match client and server connection feature flags.
4886 * Compute the compatibility flags for a connection request based on
4887 * features mutually supported by client and server.
4889 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
4890 * must not be updated here, otherwise a partially initialized value may
4891 * be exposed. After the connection request is successfully processed,
4892 * the top-level MDT connect request handler atomically updates the export
4893 * connect flags from the obd_connect_data::ocd_connect_flags field of the
4894 * reply. \see mdt_connect().
4896 * \param exp the obd_export associated with this client/target pair
4897 * \param mdt the target device for the connection
4898 * \param data stores data for this connect request
4901 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
4902 * \retval -EBADE client and server feature requirements are incompatible
4904 static int mdt_connect_internal(struct obd_export *exp,
4905 struct mdt_device *mdt,
4906 struct obd_connect_data *data)
4908 LASSERT(data != NULL);
4910 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
4911 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
4913 if (!(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
4914 !(data->ocd_connect_flags & OBD_CONNECT_IBITS)) {
4915 CWARN("%s: client %s does not support ibits lock, either "
4916 "very old or an invalid client: flags "LPX64"\n",
4917 mdt_obd_name(mdt), exp->exp_client_uuid.uuid,
4918 data->ocd_connect_flags);
4922 if (!mdt->mdt_opts.mo_acl)
4923 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
4925 if (!mdt->mdt_opts.mo_user_xattr)
4926 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
4928 if (!mdt->mdt_som_conf)
4929 data->ocd_connect_flags &= ~OBD_CONNECT_SOM;
4931 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
4932 data->ocd_brw_size = min(data->ocd_brw_size,
4933 (__u32)MD_MAX_BRW_SIZE);
4934 if (data->ocd_brw_size == 0) {
4935 CERROR("%s: cli %s/%p ocd_connect_flags: "LPX64
4936 " ocd_version: %x ocd_grant: %d "
4937 "ocd_index: %u ocd_brw_size is "
4938 "unexpectedly zero, network data "
4939 "corruption? Refusing connection of this"
4942 exp->exp_client_uuid.uuid,
4943 exp, data->ocd_connect_flags, data->ocd_version,
4944 data->ocd_grant, data->ocd_index);
4949 /* NB: Disregard the rule against updating
4950 * exp_connect_data.ocd_connect_flags in this case, since
4951 * tgt_client_new() needs to know if this is a lightweight
4952 * connection, and it is safe to expose this flag before
4953 * connection processing completes. */
4954 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
4955 spin_lock(&exp->exp_lock);
4956 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
4957 spin_unlock(&exp->exp_lock);
4960 data->ocd_version = LUSTRE_VERSION_CODE;
4962 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
4963 CWARN("%s: MDS requires FID support, but client not\n",
4968 if (mdt->mdt_som_conf &&
4969 !(data->ocd_connect_flags & (OBD_CONNECT_LIGHTWEIGHT |
4970 OBD_CONNECT_MDS_MDS |
4971 OBD_CONNECT_SOM))) {
4972 CWARN("%s: MDS has SOM enabled, but client does not support "
4973 "it\n", mdt_obd_name(mdt));
4977 if (OCD_HAS_FLAG(data, PINGLESS)) {
4978 if (ptlrpc_pinger_suppress_pings()) {
4979 spin_lock(&exp->exp_obd->obd_dev_lock);
4980 list_del_init(&exp->exp_obd_chain_timed);
4981 spin_unlock(&exp->exp_obd->obd_dev_lock);
4983 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
4987 data->ocd_max_easize = mdt->mdt_max_ea_size;
4992 /* mds_connect copy */
4993 static int mdt_obd_connect(const struct lu_env *env,
4994 struct obd_export **exp, struct obd_device *obd,
4995 struct obd_uuid *cluuid,
4996 struct obd_connect_data *data,
4999 struct obd_export *lexp;
5000 struct lustre_handle conn = { 0 };
5001 struct mdt_device *mdt;
5005 LASSERT(env != NULL);
5006 if (!exp || !obd || !cluuid)
5009 mdt = mdt_dev(obd->obd_lu_dev);
5012 * first, check whether the stack is ready to handle requests
5013 * XXX: probably not very appropriate method is used now
5014 * at some point we should find a better one
5016 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) && data != NULL &&
5017 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
5018 rc = obd_get_info(env, mdt->mdt_child_exp,
5019 sizeof(KEY_OSP_CONNECTED),
5020 KEY_OSP_CONNECTED, NULL, NULL, NULL);
5023 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
5026 rc = class_connect(&conn, obd, cluuid);
5030 lexp = class_conn2export(&conn);
5031 LASSERT(lexp != NULL);
5033 rc = mdt_connect_internal(lexp, mdt, data);
5035 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
5038 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5039 rc = tgt_client_new(env, lexp);
5041 mdt_export_stats_init(obd, lexp, localdata);
5043 /* For phase I, sync for cross-ref operation. */
5044 lexp->exp_keep_sync = 1;
5048 class_disconnect(lexp);
5057 static int mdt_obd_reconnect(const struct lu_env *env,
5058 struct obd_export *exp, struct obd_device *obd,
5059 struct obd_uuid *cluuid,
5060 struct obd_connect_data *data,
5066 if (exp == NULL || obd == NULL || cluuid == NULL)
5069 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
5071 mdt_export_stats_init(obd, exp, localdata);
5076 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
5077 struct mdt_thread_info *info,
5078 struct mdt_file_data *mfd)
5080 struct lu_context ses;
5084 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
5089 lu_context_enter(&ses);
5091 mdt_ucred(info)->uc_valid = UCRED_OLD;
5092 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
5094 lu_context_exit(&ses);
5095 lu_context_fini(&ses);
5101 static int mdt_export_cleanup(struct obd_export *exp)
5103 struct mdt_export_data *med = &exp->exp_mdt_data;
5104 struct obd_device *obd = exp->exp_obd;
5105 struct mdt_device *mdt;
5106 struct mdt_thread_info *info;
5108 CFS_LIST_HEAD(closing_list);
5109 struct mdt_file_data *mfd, *n;
5113 spin_lock(&med->med_open_lock);
5114 while (!cfs_list_empty(&med->med_open_head)) {
5115 cfs_list_t *tmp = med->med_open_head.next;
5116 mfd = cfs_list_entry(tmp, struct mdt_file_data, mfd_list);
5118 /* Remove mfd handle so it can't be found again.
5119 * We are consuming the mfd_list reference here. */
5120 class_handle_unhash(&mfd->mfd_handle);
5121 cfs_list_move_tail(&mfd->mfd_list, &closing_list);
5123 spin_unlock(&med->med_open_lock);
5124 mdt = mdt_dev(obd->obd_lu_dev);
5125 LASSERT(mdt != NULL);
5127 rc = lu_env_init(&env, LCT_MD_THREAD);
5131 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5132 LASSERT(info != NULL);
5133 memset(info, 0, sizeof *info);
5134 info->mti_env = &env;
5135 info->mti_mdt = mdt;
5136 info->mti_exp = exp;
5138 if (!cfs_list_empty(&closing_list)) {
5139 struct md_attr *ma = &info->mti_attr;
5141 /* Close any open files (which may also cause orphan unlinking). */
5142 cfs_list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
5143 cfs_list_del_init(&mfd->mfd_list);
5144 ma->ma_need = ma->ma_valid = 0;
5146 /* This file is being closed due to an eviction, it
5147 * could have been modified and now dirty regarding to
5148 * HSM archive, check this!
5149 * The logic here is to mark a file dirty if there's a
5150 * chance it was dirtied before the client was evicted,
5151 * so that we don't have to wait for a release attempt
5152 * before finding out the file was actually dirty and
5153 * fail the release. Aggressively marking it dirty here
5154 * will cause the policy engine to attempt to
5155 * re-archive it; when rearchiving, we can compare the
5156 * current version to the HSM data_version and make the
5157 * archive request into a noop if it's not actually
5160 if (mfd->mfd_mode & (FMODE_WRITE|MDS_FMODE_TRUNC))
5161 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
5163 /* Don't unlink orphan on failover umount, LU-184 */
5164 if (exp->exp_flags & OBD_OPT_FAILOVER) {
5165 ma->ma_valid = MA_FLAGS;
5166 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
5168 mdt_mfd_close(info, mfd);
5171 info->mti_mdt = NULL;
5172 /* cleanup client slot early */
5173 /* Do not erase record for recoverable client. */
5174 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
5175 tgt_client_del(&env, exp);
5181 static int mdt_obd_disconnect(struct obd_export *exp)
5187 class_export_get(exp);
5189 rc = server_disconnect_export(exp);
5191 CDEBUG(D_IOCTL, "server disconnect error: rc = %d\n", rc);
5193 rc = mdt_export_cleanup(exp);
5194 class_export_put(exp);
5198 /* FIXME: Can we avoid using these two interfaces? */
5199 static int mdt_init_export(struct obd_export *exp)
5201 struct mdt_export_data *med = &exp->exp_mdt_data;
5205 CFS_INIT_LIST_HEAD(&med->med_open_head);
5206 spin_lock_init(&med->med_open_lock);
5207 mutex_init(&med->med_idmap_mutex);
5208 med->med_idmap = NULL;
5209 spin_lock(&exp->exp_lock);
5210 exp->exp_connecting = 1;
5211 spin_unlock(&exp->exp_lock);
5213 /* self-export doesn't need client data and ldlm initialization */
5214 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5215 &exp->exp_client_uuid)))
5218 rc = tgt_client_alloc(exp);
5222 rc = ldlm_init_export(exp);
5229 tgt_client_free(exp);
5231 CERROR("%s: Failed to initialize export: rc = %d\n",
5232 exp->exp_obd->obd_name, rc);
5236 static int mdt_destroy_export(struct obd_export *exp)
5240 if (exp_connect_rmtclient(exp))
5241 mdt_cleanup_idmap(&exp->exp_mdt_data);
5243 target_destroy_export(exp);
5244 /* destroy can be called from failed obd_setup, so
5245 * checking uuid is safer than obd_self_export */
5246 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5247 &exp->exp_client_uuid)))
5250 ldlm_destroy_export(exp);
5251 tgt_client_free(exp);
5253 LASSERT(cfs_list_empty(&exp->exp_outstanding_replies));
5254 LASSERT(cfs_list_empty(&exp->exp_mdt_data.med_open_head));
5259 /** The maximum depth that fid2path() will search.
5260 * This is limited only because we want to store the fids for
5261 * historical path lookup purposes.
5263 #define MAX_PATH_DEPTH 100
5265 /** mdt_path() lookup structure. */
5266 struct path_lookup_info {
5267 __u64 pli_recno; /**< history point */
5268 __u64 pli_currec; /**< current record */
5269 struct lu_fid pli_fid;
5270 struct lu_fid pli_fids[MAX_PATH_DEPTH]; /**< path, in fids */
5271 struct mdt_object *pli_mdt_obj;
5272 char *pli_path; /**< full path */
5274 int pli_linkno; /**< which hardlink to follow */
5275 int pli_fidcount; /**< number of \a pli_fids */
5278 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
5279 struct linkea_data *ldata)
5283 LASSERT(ldata->ld_buf->lb_buf != NULL);
5285 if (!mdt_object_exists(mdt_obj))
5288 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5289 ldata->ld_buf, XATTR_NAME_LINK);
5290 if (rc == -ERANGE) {
5291 /* Buf was too small, figure out what we need. */
5292 lu_buf_free(ldata->ld_buf);
5293 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5294 ldata->ld_buf, XATTR_NAME_LINK);
5297 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
5298 if (ldata->ld_buf->lb_buf == NULL)
5300 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5301 ldata->ld_buf, XATTR_NAME_LINK);
5306 return linkea_init(ldata);
5309 static int mdt_path_current(struct mdt_thread_info *info,
5310 struct path_lookup_info *pli)
5312 struct mdt_device *mdt = info->mti_mdt;
5313 struct mdt_object *mdt_obj;
5314 struct link_ea_header *leh;
5315 struct link_ea_entry *lee;
5316 struct lu_name *tmpname = &info->mti_name;
5317 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
5318 struct lu_buf *buf = &info->mti_big_buf;
5321 struct linkea_data ldata = { 0 };
5325 /* temp buffer for path element, the buffer will be finally freed
5326 * in mdt_thread_info_fini */
5327 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
5328 if (buf->lb_buf == NULL)
5332 ptr = pli->pli_path + pli->pli_pathlen - 1;
5335 pli->pli_fidcount = 0;
5336 pli->pli_fids[0] = *(struct lu_fid *)mdt_object_fid(pli->pli_mdt_obj);
5337 *tmpfid = pli->pli_fids[0];
5338 /* root FID only exists on MDT0, and fid2path should also ends at MDT0,
5339 * so checking root_fid can only happen on MDT0. */
5340 while (!lu_fid_eq(&mdt->mdt_md_root_fid,
5341 &pli->pli_fids[pli->pli_fidcount])) {
5342 struct lu_buf lmv_buf;
5344 mdt_obj = mdt_object_find(info->mti_env, mdt, tmpfid);
5345 if (IS_ERR(mdt_obj))
5346 GOTO(out, rc = PTR_ERR(mdt_obj));
5348 if (!mdt_object_exists(mdt_obj)) {
5349 mdt_object_put(info->mti_env, mdt_obj);
5350 GOTO(out, rc = -ENOENT);
5353 if (mdt_object_remote(mdt_obj)) {
5354 mdt_object_put(info->mti_env, mdt_obj);
5355 GOTO(remote_out, rc = -EREMOTE);
5358 rc = mdt_links_read(info, mdt_obj, &ldata);
5360 mdt_object_put(info->mti_env, mdt_obj);
5365 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
5366 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
5367 /* If set, use link #linkno for path lookup, otherwise use
5368 link #0. Only do this for the final path element. */
5369 if (pli->pli_fidcount == 0 &&
5370 pli->pli_linkno < leh->leh_reccount) {
5372 for (count = 0; count < pli->pli_linkno; count++) {
5373 lee = (struct link_ea_entry *)
5374 ((char *)lee + reclen);
5375 linkea_entry_unpack(lee, &reclen, tmpname,
5378 if (pli->pli_linkno < leh->leh_reccount - 1)
5379 /* indicate to user there are more links */
5383 lmv_buf.lb_buf = info->mti_xattr_buf;
5384 lmv_buf.lb_len = sizeof(info->mti_xattr_buf);
5385 /* Check if it is slave stripes */
5386 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5387 &lmv_buf, XATTR_NAME_LMV);
5388 mdt_object_put(info->mti_env, mdt_obj);
5390 union lmv_mds_md *lmm = lmv_buf.lb_buf;
5392 /* For slave stripes, get its master */
5393 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE) {
5394 pli->pli_fids[pli->pli_fidcount] = *tmpfid;
5397 } else if (rc < 0 && rc != -ENODATA) {
5403 /* Pack the name in the end of the buffer */
5404 ptr -= tmpname->ln_namelen;
5405 if (ptr - 1 <= pli->pli_path)
5406 GOTO(out, rc = -EOVERFLOW);
5407 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
5410 /* Store the parent fid for historic lookup */
5411 if (++pli->pli_fidcount >= MAX_PATH_DEPTH)
5412 GOTO(out, rc = -EOVERFLOW);
5413 pli->pli_fids[pli->pli_fidcount] = *tmpfid;
5417 ptr++; /* skip leading / */
5418 memmove(pli->pli_path, ptr, pli->pli_path + pli->pli_pathlen - ptr);
5425 /* Returns the full path to this fid, as of changelog record recno. */
5426 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
5427 char *path, int pathlen, __u64 *recno, int *linkno,
5430 struct mdt_device *mdt = info->mti_mdt;
5431 struct path_lookup_info *pli;
5439 if (lu_fid_eq(&mdt->mdt_md_root_fid, mdt_object_fid(obj))) {
5448 pli->pli_mdt_obj = obj;
5449 pli->pli_recno = *recno;
5450 pli->pli_path = path;
5451 pli->pli_pathlen = pathlen;
5452 pli->pli_linkno = *linkno;
5454 /* Retry multiple times in case file is being moved */
5455 while (tries-- && rc == -EAGAIN)
5456 rc = mdt_path_current(info, pli);
5458 /* return the last resolved fids to the client, so the client will
5459 * build the left path on another MDT for remote object */
5460 *fid = pli->pli_fids[pli->pli_fidcount];
5462 *recno = pli->pli_currec;
5463 /* Return next link index to caller */
5464 *linkno = pli->pli_linkno;
5471 static int mdt_fid2path(struct mdt_thread_info *info,
5472 struct getinfo_fid2path *fp)
5474 struct mdt_device *mdt = info->mti_mdt;
5475 struct mdt_object *obj;
5479 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
5480 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
5482 if (!fid_is_sane(&fp->gf_fid))
5485 if (!fid_is_namespace_visible(&fp->gf_fid)) {
5486 CWARN("%s: "DFID" is invalid, sequence should be "
5487 ">= "LPX64"\n", mdt_obd_name(mdt),
5488 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
5492 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
5493 if (obj == NULL || IS_ERR(obj)) {
5494 CDEBUG(D_IOCTL, "no object "DFID": %ld\n", PFID(&fp->gf_fid),
5499 if (mdt_object_remote(obj))
5501 else if (!mdt_object_exists(obj))
5507 mdt_object_put(info->mti_env, obj);
5508 CDEBUG(D_IOCTL, "nonlocal object "DFID": rc = %d\n",
5509 PFID(&fp->gf_fid), rc);
5513 rc = mdt_path(info, obj, fp->gf_path, fp->gf_pathlen, &fp->gf_recno,
5514 &fp->gf_linkno, &fp->gf_fid);
5516 CDEBUG(D_INFO, "fid "DFID", path %s recno "LPX64" linkno %u\n",
5517 PFID(&fp->gf_fid), fp->gf_path, fp->gf_recno, fp->gf_linkno);
5519 mdt_object_put(info->mti_env, obj);
5524 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key,
5525 void *val, int vallen)
5527 struct getinfo_fid2path *fpout, *fpin;
5530 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
5533 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
5534 lustre_swab_fid2path(fpin);
5536 memcpy(fpout, fpin, sizeof(*fpin));
5537 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
5540 rc = mdt_fid2path(info, fpout);
5544 int mdt_get_info(struct tgt_session_info *tsi)
5554 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
5556 CDEBUG(D_IOCTL, "No GETINFO key\n");
5557 RETURN(err_serious(-EFAULT));
5559 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
5562 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
5563 if (vallen == NULL) {
5564 CDEBUG(D_IOCTL, "%s: cannot get RMF_GETINFO_VALLEN buffer\n",
5565 tgt_name(tsi->tsi_tgt));
5566 RETURN(err_serious(-EFAULT));
5569 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
5571 rc = req_capsule_server_pack(tsi->tsi_pill);
5573 RETURN(err_serious(rc));
5575 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
5576 if (valout == NULL) {
5577 CDEBUG(D_IOCTL, "%s: cannot get get-info RPC out buffer\n",
5578 tgt_name(tsi->tsi_tgt));
5579 RETURN(err_serious(-EFAULT));
5582 if (KEY_IS(KEY_FID2PATH)) {
5583 struct mdt_thread_info *info = tsi2mdt_info(tsi);
5585 rc = mdt_rpc_fid2path(info, key, valout, *vallen);
5586 mdt_thread_info_fini(info);
5593 /* Pass the ioc down */
5594 static int mdt_ioc_child(struct lu_env *env, struct mdt_device *mdt,
5595 unsigned int cmd, int len, void *data)
5597 struct lu_context ioctl_session;
5598 struct md_device *next = mdt->mdt_child;
5602 rc = lu_context_init(&ioctl_session, LCT_SERVER_SESSION);
5605 ioctl_session.lc_thread = (struct ptlrpc_thread *)current;
5606 lu_context_enter(&ioctl_session);
5607 env->le_ses = &ioctl_session;
5609 LASSERT(next->md_ops->mdo_iocontrol);
5610 rc = next->md_ops->mdo_iocontrol(env, next, cmd, len, data);
5612 lu_context_exit(&ioctl_session);
5613 lu_context_fini(&ioctl_session);
5617 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
5619 struct obd_ioctl_data *data = karg;
5622 struct mdt_object *obj;
5623 struct mdt_lock_handle *lh;
5627 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
5628 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
5631 fid = (struct lu_fid *)data->ioc_inlbuf1;
5633 if (!fid_is_sane(fid))
5636 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
5638 lh = &mti->mti_lh[MDT_LH_PARENT];
5639 mdt_lock_reg_init(lh, LCK_CR);
5641 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
5643 RETURN(PTR_ERR(obj));
5645 if (mdt_object_remote(obj)) {
5648 * before calling version get the correct MDS should be
5649 * fid, this is error to find remote object here
5651 CERROR("nonlocal object "DFID"\n", PFID(fid));
5652 } else if (!mdt_object_exists(obj)) {
5653 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
5656 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
5657 *(__u64 *)data->ioc_inlbuf2 = version;
5660 mdt_object_unlock_put(mti, obj, lh, 1);
5664 /* ioctls on obd dev */
5665 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
5666 void *karg, void *uarg)
5669 struct obd_device *obd = exp->exp_obd;
5670 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
5671 struct dt_device *dt = mdt->mdt_bottom;
5675 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
5676 rc = lu_env_init(&env, LCT_MD_THREAD);
5682 rc = mdt_device_sync(&env, mdt);
5684 case OBD_IOC_SET_READONLY:
5685 rc = dt->dd_ops->dt_ro(&env, dt);
5687 case OBD_IOC_ABORT_RECOVERY:
5688 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
5689 target_stop_recovery_thread(obd);
5692 case OBD_IOC_CHANGELOG_REG:
5693 case OBD_IOC_CHANGELOG_DEREG:
5694 case OBD_IOC_CHANGELOG_CLEAR:
5695 rc = mdt_ioc_child(&env, mdt, cmd, len, karg);
5697 case OBD_IOC_START_LFSCK: {
5698 struct md_device *next = mdt->mdt_child;
5699 struct obd_ioctl_data *data = karg;
5700 struct lfsck_start_param lsp;
5702 if (unlikely(data == NULL)) {
5707 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
5708 lsp.lsp_index_valid = 0;
5709 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
5712 case OBD_IOC_STOP_LFSCK: {
5713 struct md_device *next = mdt->mdt_child;
5714 struct obd_ioctl_data *data = karg;
5715 struct lfsck_stop stop;
5717 stop.ls_status = LS_STOPPED;
5718 /* Old lfsck utils may pass NULL @stop. */
5719 if (data->ioc_inlbuf1 == NULL)
5723 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
5725 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
5728 case OBD_IOC_GET_OBJ_VERSION: {
5729 struct mdt_thread_info *mti;
5730 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5731 memset(mti, 0, sizeof *mti);
5732 mti->mti_env = &env;
5736 rc = mdt_ioc_version_get(mti, karg);
5739 case OBD_IOC_CATLOGLIST: {
5740 struct mdt_thread_info *mti;
5742 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5743 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
5744 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
5745 &mti->mti_tmp_fid1);
5750 CERROR("%s: Not supported cmd = %d, rc = %d\n",
5751 mdt_obd_name(mdt), cmd, rc);
5758 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
5760 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
5761 struct lfsck_start_param lsp;
5765 lsp.lsp_start = NULL;
5766 lsp.lsp_index_valid = 0;
5767 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
5768 OBD_IOC_START_LFSCK,
5770 if (rc != 0 && rc != -EALREADY)
5771 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
5772 mdt_obd_name(mdt), rc);
5774 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
5778 static int mdt_obd_postrecov(struct obd_device *obd)
5783 rc = lu_env_init(&env, LCT_MD_THREAD);
5786 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
5791 static struct obd_ops mdt_obd_device_ops = {
5792 .o_owner = THIS_MODULE,
5793 .o_set_info_async = mdt_obd_set_info_async,
5794 .o_connect = mdt_obd_connect,
5795 .o_reconnect = mdt_obd_reconnect,
5796 .o_disconnect = mdt_obd_disconnect,
5797 .o_init_export = mdt_init_export,
5798 .o_destroy_export = mdt_destroy_export,
5799 .o_iocontrol = mdt_iocontrol,
5800 .o_postrecov = mdt_obd_postrecov,
5803 static struct lu_device* mdt_device_fini(const struct lu_env *env,
5804 struct lu_device *d)
5806 struct mdt_device *m = mdt_dev(d);
5813 static struct lu_device *mdt_device_free(const struct lu_env *env,
5814 struct lu_device *d)
5816 struct mdt_device *m = mdt_dev(d);
5819 lu_device_fini(&m->mdt_lu_dev);
5825 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
5826 struct lu_device_type *t,
5827 struct lustre_cfg *cfg)
5829 struct lu_device *l;
5830 struct mdt_device *m;
5837 rc = mdt_init0(env, m, t, cfg);
5839 mdt_device_free(env, l);
5844 l = ERR_PTR(-ENOMEM);
5848 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
5849 LU_KEY_INIT(mdt, struct mdt_thread_info);
5851 static void mdt_key_fini(const struct lu_context *ctx,
5852 struct lu_context_key *key, void* data)
5854 struct mdt_thread_info *info = data;
5856 if (info->mti_big_lmm) {
5857 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
5858 info->mti_big_lmm = NULL;
5859 info->mti_big_lmmsize = 0;
5864 /* context key: mdt_thread_key */
5865 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
5867 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
5869 return lu_ucred(info->mti_env);
5872 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
5874 return lu_ucred_check(info->mti_env);
5878 * Enable/disable COS (Commit On Sharing).
5880 * Set/Clear the COS flag in mdt options.
5882 * \param mdt mdt device
5883 * \param val 0 disables COS, other values enable COS
5885 void mdt_enable_cos(struct mdt_device *mdt, int val)
5890 mdt->mdt_opts.mo_cos = !!val;
5891 rc = lu_env_init(&env, LCT_LOCAL);
5892 if (unlikely(rc != 0)) {
5893 CWARN("%s: lu_env initialization failed, cannot "
5894 "sync: rc = %d\n", mdt_obd_name(mdt), rc);
5897 mdt_device_sync(&env, mdt);
5902 * Check COS (Commit On Sharing) status.
5904 * Return COS flag status.
5906 * \param mdt mdt device
5908 int mdt_cos_is_enabled(struct mdt_device *mdt)
5910 return mdt->mdt_opts.mo_cos != 0;
5913 static struct lu_device_type_operations mdt_device_type_ops = {
5914 .ldto_device_alloc = mdt_device_alloc,
5915 .ldto_device_free = mdt_device_free,
5916 .ldto_device_fini = mdt_device_fini
5919 static struct lu_device_type mdt_device_type = {
5920 .ldt_tags = LU_DEVICE_MD,
5921 .ldt_name = LUSTRE_MDT_NAME,
5922 .ldt_ops = &mdt_device_type_ops,
5923 .ldt_ctx_tags = LCT_MD_THREAD
5926 static int __init mdt_mod_init(void)
5930 CLASSERT(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") ==
5931 FID_NOBRACE_LEN + 1);
5932 CLASSERT(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") ==
5934 rc = lu_kmem_init(mdt_caches);
5938 rc = mds_mod_init();
5942 rc = class_register_type(&mdt_obd_device_ops, NULL, true, NULL,
5943 #ifndef HAVE_ONLY_PROCFS_SEQ
5946 LUSTRE_MDT_NAME, &mdt_device_type);
5951 lu_kmem_fini(mdt_caches);
5958 static void __exit mdt_mod_exit(void)
5960 class_unregister_type(LUSTRE_MDT_NAME);
5962 lu_kmem_fini(mdt_caches);
5965 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
5966 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
5967 MODULE_LICENSE("GPL");
5969 cfs_module(mdt, LUSTRE_VERSION_STRING, mdt_mod_init, mdt_mod_exit);