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, 2014, 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>
72 #include <lustre_nodemap.h>
74 static unsigned int max_mod_rpcs_per_client = 8;
75 CFS_MODULE_PARM(max_mod_rpcs_per_client, "i", uint, 0644,
76 "maximum number of modify RPCs in flight allowed per client");
78 mdl_mode_t mdt_mdl_lock_modes[] = {
79 [LCK_MINMODE] = MDL_MINMODE,
86 [LCK_GROUP] = MDL_GROUP
89 ldlm_mode_t mdt_dlm_lock_modes[] = {
90 [MDL_MINMODE] = LCK_MINMODE,
97 [MDL_GROUP] = LCK_GROUP
100 static struct mdt_device *mdt_dev(struct lu_device *d);
101 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
103 static const struct lu_object_operations mdt_obj_ops;
105 /* Slab for MDT object allocation */
106 static struct kmem_cache *mdt_object_kmem;
108 /* For HSM restore handles */
109 struct kmem_cache *mdt_hsm_cdt_kmem;
111 /* For HSM request handles */
112 struct kmem_cache *mdt_hsm_car_kmem;
114 static struct lu_kmem_descr mdt_caches[] = {
116 .ckd_cache = &mdt_object_kmem,
117 .ckd_name = "mdt_obj",
118 .ckd_size = sizeof(struct mdt_object)
121 .ckd_cache = &mdt_hsm_cdt_kmem,
122 .ckd_name = "mdt_cdt_restore_handle",
123 .ckd_size = sizeof(struct cdt_restore_handle)
126 .ckd_cache = &mdt_hsm_car_kmem,
127 .ckd_name = "mdt_cdt_agent_req",
128 .ckd_size = sizeof(struct cdt_agent_req)
135 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag)
139 return rep->lock_policy_res1 & op_flag;
142 void mdt_clear_disposition(struct mdt_thread_info *info,
143 struct ldlm_reply *rep, __u64 op_flag)
146 info->mti_opdata &= ~op_flag;
147 tgt_opdata_clear(info->mti_env, op_flag);
150 rep->lock_policy_res1 &= ~op_flag;
153 void mdt_set_disposition(struct mdt_thread_info *info,
154 struct ldlm_reply *rep, __u64 op_flag)
157 info->mti_opdata |= op_flag;
158 tgt_opdata_set(info->mti_env, op_flag);
161 rep->lock_policy_res1 |= op_flag;
164 void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm)
166 lh->mlh_pdo_hash = 0;
167 lh->mlh_reg_mode = lm;
168 lh->mlh_rreg_mode = lm;
169 lh->mlh_type = MDT_REG_LOCK;
172 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, ldlm_mode_t lock_mode,
173 const struct lu_name *lname)
175 lh->mlh_reg_mode = lock_mode;
176 lh->mlh_rreg_mode = lock_mode;
177 lh->mlh_type = MDT_PDO_LOCK;
179 if (lu_name_is_valid(lname)) {
180 lh->mlh_pdo_hash = full_name_hash(lname->ln_name,
182 /* XXX Workaround for LU-2856
184 * Zero is a valid return value of full_name_hash, but
185 * several users of mlh_pdo_hash assume a non-zero
186 * hash value. We therefore map zero onto an
187 * arbitrary, but consistent value (1) to avoid
188 * problems further down the road. */
189 if (unlikely(lh->mlh_pdo_hash == 0))
190 lh->mlh_pdo_hash = 1;
192 lh->mlh_pdo_hash = 0;
196 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
197 struct mdt_lock_handle *lh)
203 * Any dir access needs couple of locks:
205 * 1) on part of dir we gonna take lookup/modify;
207 * 2) on whole dir to protect it from concurrent splitting and/or to
208 * flush client's cache for readdir().
210 * so, for a given mode and object this routine decides what lock mode
211 * to use for lock #2:
213 * 1) if caller's gonna lookup in dir then we need to protect dir from
214 * being splitted only - LCK_CR
216 * 2) if caller's gonna modify dir then we need to protect dir from
217 * being splitted and to flush cache - LCK_CW
219 * 3) if caller's gonna modify dir and that dir seems ready for
220 * splitting then we need to protect it from any type of access
221 * (lookup/modify/split) - LCK_EX --bzzz
224 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
225 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
228 * Ask underlaying level its opinion about preferable PDO lock mode
229 * having access type passed as regular lock mode:
231 * - MDL_MINMODE means that lower layer does not want to specify lock
234 * - MDL_NL means that no PDO lock should be taken. This is used in some
235 * cases. Say, for non-splittable directories no need to use PDO locks
238 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
239 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
241 if (mode != MDL_MINMODE) {
242 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
245 * Lower layer does not want to specify locking mode. We do it
246 * our selves. No special protection is needed, just flush
247 * client's cache on modification and allow concurrent
250 switch (lh->mlh_reg_mode) {
252 lh->mlh_pdo_mode = LCK_EX;
255 lh->mlh_pdo_mode = LCK_CR;
258 lh->mlh_pdo_mode = LCK_CW;
261 CERROR("Not expected lock type (0x%x)\n",
262 (int)lh->mlh_reg_mode);
267 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
271 static int mdt_getstatus(struct tgt_session_info *tsi)
273 struct mdt_thread_info *info = tsi2mdt_info(tsi);
274 struct mdt_device *mdt = info->mti_mdt;
275 struct mdt_body *repbody;
280 rc = mdt_check_ucred(info);
282 GOTO(out, rc = err_serious(rc));
284 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK))
285 GOTO(out, rc = err_serious(-ENOMEM));
287 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
288 repbody->mbo_fid1 = mdt->mdt_md_root_fid;
289 repbody->mbo_valid |= OBD_MD_FLID;
293 mdt_thread_info_fini(info);
297 static int mdt_statfs(struct tgt_session_info *tsi)
299 struct ptlrpc_request *req = tgt_ses_req(tsi);
300 struct mdt_thread_info *info = tsi2mdt_info(tsi);
301 struct md_device *next = info->mti_mdt->mdt_child;
302 struct ptlrpc_service_part *svcpt;
303 struct obd_statfs *osfs;
308 svcpt = req->rq_rqbd->rqbd_svcpt;
310 /* This will trigger a watchdog timeout */
311 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
312 (MDT_SERVICE_WATCHDOG_FACTOR *
313 at_get(&svcpt->scp_at_estimate)) + 1);
315 rc = mdt_check_ucred(info);
317 GOTO(out, rc = err_serious(rc));
319 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
320 GOTO(out, rc = err_serious(-ENOMEM));
322 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
324 GOTO(out, rc = -EPROTO);
326 /** statfs information are cached in the mdt_device */
327 if (cfs_time_before_64(info->mti_mdt->mdt_osfs_age,
328 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS))) {
329 /** statfs data is too old, get up-to-date one */
330 rc = next->md_ops->mdo_statfs(info->mti_env, next, osfs);
333 spin_lock(&info->mti_mdt->mdt_osfs_lock);
334 info->mti_mdt->mdt_osfs = *osfs;
335 info->mti_mdt->mdt_osfs_age = cfs_time_current_64();
336 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
338 /** use cached statfs data */
339 spin_lock(&info->mti_mdt->mdt_osfs_lock);
340 *osfs = info->mti_mdt->mdt_osfs;
341 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
345 mdt_counter_incr(req, LPROC_MDT_STATFS);
347 mdt_thread_info_fini(info);
351 #ifdef CONFIG_FS_POSIX_ACL
353 * Pack ACL data into the reply. UIDs/GIDs are mapped and filtered by nodemap.
355 * \param info thread info object
356 * \param repbody reply to pack ACLs into
357 * \param o mdt object of file to examine
358 * \param nodemap nodemap of client to reply to
360 * \retval -errno error getting or parsing ACL from disk
362 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
363 struct mdt_object *o, struct lu_nodemap *nodemap)
365 const struct lu_env *env = info->mti_env;
366 struct md_object *next = mdt_object_child(o);
367 struct lu_buf *buf = &info->mti_buf;
370 buf->lb_buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
371 buf->lb_len = req_capsule_get_size(info->mti_pill, &RMF_ACL,
373 if (buf->lb_len == 0)
376 rc = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_ACCESS);
378 if (rc == -ENODATA) {
379 repbody->mbo_aclsize = 0;
380 repbody->mbo_valid |= OBD_MD_FLACL;
382 } else if (rc == -EOPNOTSUPP) {
385 CERROR("%s: unable to read "DFID" ACL: rc = %d\n",
386 mdt_obd_name(info->mti_mdt),
387 PFID(mdt_object_fid(o)), rc);
390 rc = nodemap_map_acl(nodemap, buf->lb_buf,
391 rc, NODEMAP_FS_TO_CLIENT);
392 /* if all ACLs mapped out, rc is still >= 0 */
394 CERROR("%s: nodemap_map_acl unable to parse "DFID
395 " ACL: rc = %d\n", mdt_obd_name(info->mti_mdt),
396 PFID(mdt_object_fid(o)), rc);
398 repbody->mbo_aclsize = rc;
399 repbody->mbo_valid |= OBD_MD_FLACL;
407 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
408 const struct lu_attr *attr, const struct lu_fid *fid)
410 struct md_attr *ma = &info->mti_attr;
411 struct obd_export *exp = info->mti_exp;
412 struct lu_nodemap *nodemap = exp->exp_target_data.ted_nodemap;
414 LASSERT(ma->ma_valid & MA_INODE);
416 if (attr->la_valid & LA_ATIME) {
417 b->mbo_atime = attr->la_atime;
418 b->mbo_valid |= OBD_MD_FLATIME;
420 if (attr->la_valid & LA_MTIME) {
421 b->mbo_mtime = attr->la_mtime;
422 b->mbo_valid |= OBD_MD_FLMTIME;
424 if (attr->la_valid & LA_CTIME) {
425 b->mbo_ctime = attr->la_ctime;
426 b->mbo_valid |= OBD_MD_FLCTIME;
428 if (attr->la_valid & LA_FLAGS) {
429 b->mbo_flags = attr->la_flags;
430 b->mbo_valid |= OBD_MD_FLFLAGS;
432 if (attr->la_valid & LA_NLINK) {
433 b->mbo_nlink = attr->la_nlink;
434 b->mbo_valid |= OBD_MD_FLNLINK;
436 if (attr->la_valid & LA_UID) {
437 b->mbo_uid = nodemap_map_id(nodemap, NODEMAP_UID,
438 NODEMAP_FS_TO_CLIENT,
440 b->mbo_valid |= OBD_MD_FLUID;
442 if (attr->la_valid & LA_GID) {
443 b->mbo_gid = nodemap_map_id(nodemap, NODEMAP_GID,
444 NODEMAP_FS_TO_CLIENT,
446 b->mbo_valid |= OBD_MD_FLGID;
448 b->mbo_mode = attr->la_mode;
449 if (attr->la_valid & LA_MODE)
450 b->mbo_valid |= OBD_MD_FLMODE;
451 if (attr->la_valid & LA_TYPE)
452 b->mbo_valid |= OBD_MD_FLTYPE;
456 b->mbo_valid |= OBD_MD_FLID;
457 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, valid="LPX64"\n",
458 PFID(fid), b->mbo_nlink, b->mbo_mode, b->mbo_valid);
462 mdt_body_reverse_idmap(info, b);
464 if (!(attr->la_valid & LA_TYPE))
467 b->mbo_rdev = attr->la_rdev;
468 b->mbo_size = attr->la_size;
469 b->mbo_blocks = attr->la_blocks;
471 if (!S_ISREG(attr->la_mode)) {
472 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
473 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
474 /* means no objects are allocated on osts. */
475 LASSERT(!(ma->ma_valid & MA_LOV));
476 /* just ignore blocks occupied by extend attributes on MDS */
478 /* if no object is allocated on osts, the size on mds is valid.
480 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
481 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL &&
482 ma->ma_lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) {
483 /* A released file stores its size on MDS. */
484 /* But return 1 block for released file, unless tools like tar
485 * will consider it fully sparse. (LU-3864)
487 if (unlikely(b->mbo_size == 0))
491 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
494 if (fid != NULL && (b->mbo_valid & OBD_MD_FLSIZE))
495 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
496 PFID(fid), (unsigned long long)b->mbo_size);
499 static inline int mdt_body_has_lov(const struct lu_attr *la,
500 const struct mdt_body *body)
502 return (S_ISREG(la->la_mode) && (body->mbo_valid & OBD_MD_FLEASIZE)) ||
503 (S_ISDIR(la->la_mode) && (body->mbo_valid & OBD_MD_FLDIREA));
506 void mdt_client_compatibility(struct mdt_thread_info *info)
508 struct mdt_body *body;
509 struct ptlrpc_request *req = mdt_info_req(info);
510 struct obd_export *exp = req->rq_export;
511 struct md_attr *ma = &info->mti_attr;
512 struct lu_attr *la = &ma->ma_attr;
515 if (exp_connect_layout(exp))
516 /* the client can deal with 16-bit lmm_stripe_count */
519 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
521 if (!mdt_body_has_lov(la, body))
524 /* now we have a reply with a lov for a client not compatible with the
525 * layout lock so we have to clean the layout generation number */
526 if (S_ISREG(la->la_mode))
527 ma->ma_lmm->lmm_layout_gen = 0;
531 static int mdt_attr_get_eabuf_size(struct mdt_thread_info *info,
532 struct mdt_object *o)
534 const struct lu_env *env = info->mti_env;
537 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
546 /* Is it a directory? Let's check for the LMV as well */
547 if (S_ISDIR(lu_object_attr(&mdt_object_child(o)->mo_lu))) {
548 rc2 = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
552 rc2 = mo_xattr_get(env, mdt_object_child(o),
554 XATTR_NAME_DEFAULT_LMV);
556 if ((rc2 < 0 && rc2 != -ENODATA) || (rc2 > rc))
564 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
567 const struct lu_env *env = info->mti_env;
571 LASSERT(info->mti_big_lmm_used == 0);
572 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
576 /* big_lmm may need to be grown */
577 if (info->mti_big_lmmsize < rc) {
578 int size = size_roundup_power2(rc);
580 if (info->mti_big_lmmsize > 0) {
581 /* free old buffer */
582 LASSERT(info->mti_big_lmm);
583 OBD_FREE_LARGE(info->mti_big_lmm,
584 info->mti_big_lmmsize);
585 info->mti_big_lmm = NULL;
586 info->mti_big_lmmsize = 0;
589 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
590 if (info->mti_big_lmm == NULL)
592 info->mti_big_lmmsize = size;
594 LASSERT(info->mti_big_lmmsize >= rc);
596 info->mti_buf.lb_buf = info->mti_big_lmm;
597 info->mti_buf.lb_len = info->mti_big_lmmsize;
598 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
603 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
604 struct md_attr *ma, const char *name)
606 struct md_object *next = mdt_object_child(o);
607 struct lu_buf *buf = &info->mti_buf;
610 if (strcmp(name, XATTR_NAME_LOV) == 0) {
611 buf->lb_buf = ma->ma_lmm;
612 buf->lb_len = ma->ma_lmm_size;
613 LASSERT(!(ma->ma_valid & MA_LOV));
614 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
615 buf->lb_buf = ma->ma_lmv;
616 buf->lb_len = ma->ma_lmv_size;
617 LASSERT(!(ma->ma_valid & MA_LMV));
618 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
619 buf->lb_buf = ma->ma_lmv;
620 buf->lb_len = ma->ma_lmv_size;
621 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
626 rc = mo_xattr_get(info->mti_env, next, buf, name);
630 if (strcmp(name, XATTR_NAME_LOV) == 0) {
631 if (info->mti_big_lmm_used)
632 ma->ma_lmm = info->mti_big_lmm;
634 /* NOT return LOV EA with hole to old client. */
635 if (unlikely(le32_to_cpu(ma->ma_lmm->lmm_pattern) &
636 LOV_PATTERN_F_HOLE) &&
637 !(exp_connect_flags(info->mti_exp) &
638 OBD_CONNECT_LFSCK)) {
641 ma->ma_lmm_size = rc;
642 ma->ma_valid |= MA_LOV;
644 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
645 if (info->mti_big_lmm_used)
646 ma->ma_lmv = info->mti_big_lmm;
648 ma->ma_lmv_size = rc;
649 ma->ma_valid |= MA_LMV;
650 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
651 ma->ma_lmv_size = rc;
652 ma->ma_valid |= MA_LMV_DEF;
655 /* Update mdt_max_mdsize so all clients will be aware that */
656 if (info->mti_mdt->mdt_max_mdsize < rc)
657 info->mti_mdt->mdt_max_mdsize = rc;
660 } else if (rc == -ENODATA) {
663 } else if (rc == -ERANGE) {
664 /* Default LMV has fixed size, so it must be able to fit
665 * in the original buffer */
666 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
668 rc = mdt_big_xattr_get(info, o, name);
670 info->mti_big_lmm_used = 1;
678 static int mdt_attr_get_pfid(struct mdt_thread_info *info,
679 struct mdt_object *o, struct lu_fid *pfid)
681 struct lu_buf *buf = &info->mti_buf;
682 struct link_ea_header *leh;
683 struct link_ea_entry *lee;
687 buf->lb_buf = info->mti_big_lmm;
688 buf->lb_len = info->mti_big_lmmsize;
689 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
690 buf, XATTR_NAME_LINK);
691 /* ignore errors, MA_PFID won't be set and it is
692 * up to the caller to treat this as an error */
693 if (rc == -ERANGE || buf->lb_len == 0) {
694 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
695 buf->lb_buf = info->mti_big_lmm;
696 buf->lb_len = info->mti_big_lmmsize;
701 if (rc < sizeof(*leh)) {
702 CERROR("short LinkEA on "DFID": rc = %d\n",
703 PFID(mdt_object_fid(o)), rc);
707 leh = (struct link_ea_header *) buf->lb_buf;
708 lee = (struct link_ea_entry *)(leh + 1);
709 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
710 leh->leh_magic = LINK_EA_MAGIC;
711 leh->leh_reccount = __swab32(leh->leh_reccount);
712 leh->leh_len = __swab64(leh->leh_len);
714 if (leh->leh_magic != LINK_EA_MAGIC)
716 if (leh->leh_reccount == 0)
719 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
720 fid_be_to_cpu(pfid, pfid);
725 int mdt_attr_get_complex(struct mdt_thread_info *info,
726 struct mdt_object *o, struct md_attr *ma)
728 const struct lu_env *env = info->mti_env;
729 struct md_object *next = mdt_object_child(o);
730 struct lu_buf *buf = &info->mti_buf;
731 int need = ma->ma_need;
738 if (mdt_object_exists(o) == 0)
739 GOTO(out, rc = -ENOENT);
740 mode = lu_object_attr(&next->mo_lu);
742 if (need & MA_INODE) {
743 ma->ma_need = MA_INODE;
744 rc = mo_attr_get(env, next, ma);
747 ma->ma_valid |= MA_INODE;
750 if (need & MA_PFID) {
751 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
753 ma->ma_valid |= MA_PFID;
754 /* ignore this error, parent fid is not mandatory */
758 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
759 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
764 if (need & MA_LMV && S_ISDIR(mode)) {
765 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
770 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
771 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
776 if (need & MA_HSM && S_ISREG(mode)) {
777 buf->lb_buf = info->mti_xattr_buf;
778 buf->lb_len = sizeof(info->mti_xattr_buf);
779 CLASSERT(sizeof(struct hsm_attrs) <=
780 sizeof(info->mti_xattr_buf));
781 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
782 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
784 ma->ma_valid |= MA_HSM;
785 else if (rc2 < 0 && rc2 != -ENODATA)
789 #ifdef CONFIG_FS_POSIX_ACL
790 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
791 buf->lb_buf = ma->ma_acl;
792 buf->lb_len = ma->ma_acl_size;
793 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
795 ma->ma_acl_size = rc2;
796 ma->ma_valid |= MA_ACL_DEF;
797 } else if (rc2 == -ENODATA) {
806 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = "LPX64" ma_lmm=%p\n",
807 rc, ma->ma_valid, ma->ma_lmm);
811 static int mdt_getattr_internal(struct mdt_thread_info *info,
812 struct mdt_object *o, int ma_need)
814 struct md_object *next = mdt_object_child(o);
815 const struct mdt_body *reqbody = info->mti_body;
816 struct ptlrpc_request *req = mdt_info_req(info);
817 struct md_attr *ma = &info->mti_attr;
818 struct lu_attr *la = &ma->ma_attr;
819 struct req_capsule *pill = info->mti_pill;
820 const struct lu_env *env = info->mti_env;
821 struct mdt_body *repbody;
822 struct lu_buf *buffer = &info->mti_buf;
823 struct obd_export *exp = info->mti_exp;
824 struct lu_nodemap *nodemap = exp->exp_target_data.ted_nodemap;
829 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
830 RETURN(err_serious(-ENOMEM));
832 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
836 if (mdt_object_remote(o)) {
837 /* This object is located on remote node.*/
838 /* Return -ENOTSUPP for old client */
839 if (!mdt_is_dne_client(req->rq_export))
840 GOTO(out, rc = -ENOTSUPP);
842 repbody->mbo_fid1 = *mdt_object_fid(o);
843 repbody->mbo_valid = OBD_MD_FLID | OBD_MD_MDS;
847 if (reqbody->mbo_eadatasize > 0) {
848 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
849 if (buffer->lb_buf == NULL)
850 GOTO(out, rc = -EPROTO);
851 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD,
854 buffer->lb_buf = NULL;
856 ma_need &= ~(MA_LOV | MA_LMV);
857 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
858 mdt_obd_name(info->mti_mdt),
859 req->rq_export->exp_client_uuid.uuid);
862 /* If it is dir object and client require MEA, then we got MEA */
863 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
864 (reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
865 /* Assumption: MDT_MD size is enough for lmv size. */
866 ma->ma_lmv = buffer->lb_buf;
867 ma->ma_lmv_size = buffer->lb_len;
868 ma->ma_need = MA_INODE;
869 if (ma->ma_lmv_size > 0) {
870 if (reqbody->mbo_valid & OBD_MD_MEA)
871 ma->ma_need |= MA_LMV;
872 else if (reqbody->mbo_valid & OBD_MD_DEFAULT_MEA)
873 ma->ma_need |= MA_LMV_DEF;
876 ma->ma_lmm = buffer->lb_buf;
877 ma->ma_lmm_size = buffer->lb_len;
878 ma->ma_need = MA_INODE | MA_HSM;
879 if (ma->ma_lmm_size > 0)
880 ma->ma_need |= MA_LOV;
883 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
884 reqbody->mbo_valid & OBD_MD_FLDIREA &&
885 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
886 /* get default stripe info for this dir. */
887 ma->ma_need |= MA_LOV_DEF;
889 ma->ma_need |= ma_need;
891 rc = mdt_attr_get_complex(info, o, ma);
893 CERROR("%s: getattr error for "DFID": rc = %d\n",
894 mdt_obd_name(info->mti_mdt),
895 PFID(mdt_object_fid(o)), rc);
899 /* if file is released, check if a restore is running */
900 if (ma->ma_valid & MA_HSM) {
901 repbody->mbo_valid |= OBD_MD_TSTATE;
902 if ((ma->ma_hsm.mh_flags & HS_RELEASED) &&
903 mdt_hsm_restore_is_running(info, mdt_object_fid(o)))
904 repbody->mbo_t_state = MS_RESTORE;
907 is_root = lu_fid_eq(mdt_object_fid(o), &info->mti_mdt->mdt_md_root_fid);
909 /* the Lustre protocol supposes to return default striping
910 * on the user-visible root if explicitly requested */
911 if ((ma->ma_valid & MA_LOV) == 0 && S_ISDIR(la->la_mode) &&
912 (ma->ma_need & MA_LOV_DEF && is_root) && ma->ma_need & MA_LOV) {
913 struct lu_fid rootfid;
914 struct mdt_object *root;
915 struct mdt_device *mdt = info->mti_mdt;
917 rc = dt_root_get(env, mdt->mdt_bottom, &rootfid);
920 root = mdt_object_find(env, mdt, &rootfid);
922 RETURN(PTR_ERR(root));
923 rc = mdt_stripe_get(info, root, ma, XATTR_NAME_LOV);
924 mdt_object_put(info->mti_env, root);
926 CERROR("%s: getattr error for "DFID": rc = %d\n",
927 mdt_obd_name(info->mti_mdt),
928 PFID(mdt_object_fid(o)), rc);
933 if (likely(ma->ma_valid & MA_INODE))
934 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
938 if (mdt_body_has_lov(la, reqbody)) {
939 if (ma->ma_valid & MA_LOV) {
940 LASSERT(ma->ma_lmm_size);
941 repbody->mbo_eadatasize = ma->ma_lmm_size;
942 if (S_ISDIR(la->la_mode))
943 repbody->mbo_valid |= OBD_MD_FLDIREA;
945 repbody->mbo_valid |= OBD_MD_FLEASIZE;
946 mdt_dump_lmm(D_INFO, ma->ma_lmm, repbody->mbo_valid);
948 if (ma->ma_valid & MA_LMV) {
949 /* Return -ENOTSUPP for old client */
950 if (!mdt_is_striped_client(req->rq_export))
953 LASSERT(S_ISDIR(la->la_mode));
954 mdt_dump_lmv(D_INFO, ma->ma_lmv);
955 repbody->mbo_eadatasize = ma->ma_lmv_size;
956 repbody->mbo_valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
958 if (ma->ma_valid & MA_LMV_DEF) {
959 /* Return -ENOTSUPP for old client */
960 if (!mdt_is_striped_client(req->rq_export))
962 LASSERT(S_ISDIR(la->la_mode));
963 repbody->mbo_eadatasize = ma->ma_lmv_size;
964 repbody->mbo_valid |= (OBD_MD_FLDIREA |
967 } else if (S_ISLNK(la->la_mode) &&
968 reqbody->mbo_valid & OBD_MD_LINKNAME) {
969 buffer->lb_buf = ma->ma_lmm;
970 /* eadatasize from client includes NULL-terminator, so
971 * there is no need to read it */
972 buffer->lb_len = reqbody->mbo_eadatasize - 1;
973 rc = mo_readlink(env, next, buffer);
974 if (unlikely(rc <= 0)) {
975 CERROR("%s: readlink failed for "DFID": rc = %d\n",
976 mdt_obd_name(info->mti_mdt),
977 PFID(mdt_object_fid(o)), rc);
980 int print_limit = min_t(int, PAGE_CACHE_SIZE - 128, rc);
982 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
984 repbody->mbo_valid |= OBD_MD_LINKNAME;
985 /* we need to report back size with NULL-terminator
986 * because client expects that */
987 repbody->mbo_eadatasize = rc + 1;
988 if (repbody->mbo_eadatasize != reqbody->mbo_eadatasize)
989 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
990 "on "DFID ", expected %d\n",
991 mdt_obd_name(info->mti_mdt),
992 rc, PFID(mdt_object_fid(o)),
993 reqbody->mbo_eadatasize - 1);
995 ((char *)ma->ma_lmm)[rc] = 0;
997 /* If the total CDEBUG() size is larger than a page, it
998 * will print a warning to the console, avoid this by
999 * printing just the last part of the symlink. */
1000 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
1001 print_limit < rc ? "..." : "", print_limit,
1002 (char *)ma->ma_lmm + rc - print_limit, rc);
1007 if (reqbody->mbo_valid & OBD_MD_FLMODEASIZE) {
1008 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
1009 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
1010 CDEBUG(D_INODE, "changing the max MD size to %u\n",
1011 repbody->mbo_max_mdsize);
1014 if (exp_connect_rmtclient(info->mti_exp) &&
1015 reqbody->mbo_valid & OBD_MD_FLRMTPERM) {
1016 void *buf = req_capsule_server_get(pill, &RMF_ACL);
1018 /* mdt_getattr_lock only */
1019 rc = mdt_pack_remote_perm(info, o, buf);
1021 repbody->mbo_valid &= ~OBD_MD_FLRMTPERM;
1022 repbody->mbo_aclsize = 0;
1025 repbody->mbo_valid |= OBD_MD_FLRMTPERM;
1026 repbody->mbo_aclsize = sizeof(struct mdt_remote_perm);
1029 #ifdef CONFIG_FS_POSIX_ACL
1030 else if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
1031 (reqbody->mbo_valid & OBD_MD_FLACL))
1032 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
1037 mdt_counter_incr(req, LPROC_MDT_GETATTR);
1042 static int mdt_getattr(struct tgt_session_info *tsi)
1044 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1045 struct mdt_object *obj = info->mti_object;
1046 struct req_capsule *pill = info->mti_pill;
1047 struct mdt_body *reqbody;
1048 struct mdt_body *repbody;
1052 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1054 LASSERT(obj != NULL);
1055 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1057 /* Unlike intent case where we need to pre-fill out buffers early on
1058 * in intent policy for ldlm reasons, here we can have a much better
1059 * guess at EA size by just reading it from disk.
1060 * Exceptions are readdir and (missing) directory striping */
1062 if (reqbody->mbo_valid & OBD_MD_LINKNAME) {
1063 /* No easy way to know how long is the symlink, but it cannot
1064 * be more than PATH_MAX, so we allocate +1 */
1067 /* A special case for fs ROOT: getattr there might fetch
1068 * default EA for entire fs, not just for this dir!
1070 } else if (lu_fid_eq(mdt_object_fid(obj),
1071 &info->mti_mdt->mdt_md_root_fid) &&
1072 (reqbody->mbo_valid & OBD_MD_FLDIREA) &&
1073 (lustre_msg_get_opc(mdt_info_req(info)->rq_reqmsg) ==
1075 /* Should the default strping be bigger, mdt_fix_reply
1076 * will reallocate */
1077 rc = DEF_REP_MD_SIZE;
1079 /* Read the actual EA size from disk */
1080 rc = mdt_attr_get_eabuf_size(info, obj);
1084 GOTO(out, rc = err_serious(rc));
1086 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, rc);
1088 rc = req_capsule_server_pack(pill);
1089 if (unlikely(rc != 0))
1090 GOTO(out, rc = err_serious(rc));
1092 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1093 LASSERT(repbody != NULL);
1094 repbody->mbo_eadatasize = 0;
1095 repbody->mbo_aclsize = 0;
1097 if (reqbody->mbo_valid & OBD_MD_FLRMTPERM)
1098 rc = mdt_init_ucred(info, reqbody);
1100 rc = mdt_check_ucred(info);
1102 GOTO(out_shrink, rc);
1104 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1106 rc = mdt_getattr_internal(info, obj, 0);
1107 if (reqbody->mbo_valid & OBD_MD_FLRMTPERM)
1108 mdt_exit_ucred(info);
1111 mdt_client_compatibility(info);
1112 rc2 = mdt_fix_reply(info);
1116 mdt_thread_info_fini(info);
1121 * Exchange MOF_LOV_CREATED flags between two objects after a
1122 * layout swap. No assumption is made on whether o1 or o2 have
1123 * created objects or not.
1125 * \param[in,out] o1 First swap layout object
1126 * \param[in,out] o2 Second swap layout object
1128 static void mdt_swap_lov_flag(struct mdt_object *o1, struct mdt_object *o2)
1132 mutex_lock(&o1->mot_lov_mutex);
1133 mutex_lock(&o2->mot_lov_mutex);
1135 o1_flags = o1->mot_flags;
1136 o1->mot_flags = (o1->mot_flags & ~MOF_LOV_CREATED) |
1137 (o2->mot_flags & MOF_LOV_CREATED);
1139 o2->mot_flags = (o2->mot_flags & ~MOF_LOV_CREATED) |
1140 (o1_flags & MOF_LOV_CREATED);
1142 mutex_unlock(&o2->mot_lov_mutex);
1143 mutex_unlock(&o1->mot_lov_mutex);
1146 static int mdt_swap_layouts(struct tgt_session_info *tsi)
1148 struct mdt_thread_info *info;
1149 struct ptlrpc_request *req = tgt_ses_req(tsi);
1150 struct obd_export *exp = req->rq_export;
1151 struct mdt_object *o1, *o2, *o;
1152 struct mdt_lock_handle *lh1, *lh2;
1153 struct mdc_swap_layouts *msl;
1157 /* client does not support layout lock, so layout swaping
1159 * FIXME: there is a problem for old clients which don't support
1160 * layout lock yet. If those clients have already opened the file
1161 * they won't be notified at all so that old layout may still be
1162 * used to do IO. This can be fixed after file release is landed by
1163 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1164 if (!exp_connect_layout(exp))
1165 RETURN(-EOPNOTSUPP);
1167 info = tsi2mdt_info(tsi);
1169 if (info->mti_dlm_req != NULL)
1170 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
1172 o1 = info->mti_object;
1173 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1174 &info->mti_body->mbo_fid2);
1176 GOTO(out, rc = PTR_ERR(o));
1178 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1179 GOTO(put, rc = -ENOENT);
1181 rc = lu_fid_cmp(&info->mti_body->mbo_fid1, &info->mti_body->mbo_fid2);
1182 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1188 /* permission check. Make sure the calling process having permission
1189 * to write both files. */
1190 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1195 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1200 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1202 GOTO(put, rc = -EPROTO);
1204 lh1 = &info->mti_lh[MDT_LH_NEW];
1205 mdt_lock_reg_init(lh1, LCK_EX);
1206 lh2 = &info->mti_lh[MDT_LH_OLD];
1207 mdt_lock_reg_init(lh2, LCK_EX);
1209 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1210 MDS_INODELOCK_XATTR);
1214 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1215 MDS_INODELOCK_XATTR);
1219 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1220 mdt_object_child(o2), msl->msl_flags);
1224 mdt_swap_lov_flag(o1, o2);
1227 mdt_object_unlock(info, o2, lh2, rc);
1229 mdt_object_unlock(info, o1, lh1, rc);
1231 mdt_object_put(info->mti_env, o);
1233 mdt_thread_info_fini(info);
1237 static int mdt_raw_lookup(struct mdt_thread_info *info,
1238 struct mdt_object *parent,
1239 const struct lu_name *lname,
1240 struct ldlm_reply *ldlm_rep)
1242 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1246 LASSERT(!info->mti_cross_ref);
1248 /* Only got the fid of this obj by name */
1249 fid_zero(child_fid);
1250 rc = mdo_lookup(info->mti_env, mdt_object_child(info->mti_object),
1251 lname, child_fid, &info->mti_spec);
1253 struct mdt_body *repbody;
1255 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1256 repbody->mbo_fid1 = *child_fid;
1257 repbody->mbo_valid = OBD_MD_FLID;
1258 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1259 } else if (rc == -ENOENT) {
1260 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1267 * UPDATE lock should be taken against parent, and be released before exit;
1268 * child_bits lock should be taken against child, and be returned back:
1269 * (1)normal request should release the child lock;
1270 * (2)intent request will grant the lock to client.
1272 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1273 struct mdt_lock_handle *lhc,
1275 struct ldlm_reply *ldlm_rep)
1277 struct ptlrpc_request *req = mdt_info_req(info);
1278 struct mdt_body *reqbody = NULL;
1279 struct mdt_object *parent = info->mti_object;
1280 struct mdt_object *child;
1281 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1282 struct lu_name *lname = NULL;
1283 struct mdt_lock_handle *lhp = NULL;
1284 struct ldlm_lock *lock;
1291 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1292 LASSERT(ergo(is_resent,
1293 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1298 if (info->mti_cross_ref) {
1299 /* Only getattr on the child. Parent is on another node. */
1300 mdt_set_disposition(info, ldlm_rep,
1301 DISP_LOOKUP_EXECD | DISP_LOOKUP_POS);
1303 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1305 PFID(mdt_object_fid(child)), ldlm_rep);
1307 rc = mdt_check_resent_lock(info, child, lhc);
1310 } else if (rc > 0) {
1311 mdt_lock_handle_init(lhc);
1312 mdt_lock_reg_init(lhc, LCK_PR);
1315 * Object's name is on another MDS, no lookup or layout
1316 * lock is needed here but update lock is.
1318 child_bits &= ~(MDS_INODELOCK_LOOKUP |
1319 MDS_INODELOCK_LAYOUT);
1320 child_bits |= MDS_INODELOCK_PERM | MDS_INODELOCK_UPDATE;
1322 rc = mdt_object_lock(info, child, lhc, child_bits);
1327 /* Finally, we can get attr for child. */
1328 if (!mdt_object_exists(child)) {
1329 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
1331 "remote object doesn't exist.\n");
1332 mdt_object_unlock(info, child, lhc, 1);
1336 rc = mdt_getattr_internal(info, child, 0);
1337 if (unlikely(rc != 0))
1338 mdt_object_unlock(info, child, lhc, 1);
1343 lname = &info->mti_name;
1344 mdt_name_unpack(info->mti_pill, &RMF_NAME, lname, MNF_FIX_ANON);
1346 if (lu_name_is_valid(lname)) {
1347 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", "
1348 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1349 PNAME(lname), ldlm_rep);
1351 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1352 if (unlikely(reqbody == NULL))
1353 RETURN(err_serious(-EPROTO));
1355 *child_fid = reqbody->mbo_fid2;
1357 if (unlikely(!fid_is_sane(child_fid)))
1358 RETURN(err_serious(-EINVAL));
1360 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1362 PFID(mdt_object_fid(parent)),
1363 PFID(&reqbody->mbo_fid2), ldlm_rep);
1366 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1368 if (unlikely(!mdt_object_exists(parent)) && lu_name_is_valid(lname)) {
1369 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1371 "Parent doesn't exist!\n");
1375 if (mdt_object_remote(parent)) {
1376 CERROR("%s: parent "DFID" is on remote target\n",
1377 mdt_obd_name(info->mti_mdt),
1378 PFID(mdt_object_fid(parent)));
1382 if (lu_name_is_valid(lname)) {
1383 /* Always allow to lookup ".." */
1384 if (unlikely(lname->ln_namelen == 2 &&
1385 lname->ln_name[0] == '.' &&
1386 lname->ln_name[1] == '.'))
1387 info->mti_spec.sp_permitted = 1;
1389 if (info->mti_body->mbo_valid == OBD_MD_FLID) {
1390 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1395 /* step 1: lock parent only if parent is a directory */
1396 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
1397 lhp = &info->mti_lh[MDT_LH_PARENT];
1398 mdt_lock_pdo_init(lhp, LCK_PR, lname);
1399 rc = mdt_object_lock(info, parent, lhp,
1400 MDS_INODELOCK_UPDATE);
1401 if (unlikely(rc != 0))
1405 /* step 2: lookup child's fid by name */
1406 fid_zero(child_fid);
1407 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
1408 child_fid, &info->mti_spec);
1410 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1413 GOTO(out_parent, rc);
1416 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1419 *step 3: find the child object by fid & lock it.
1420 * regardless if it is local or remote.
1422 *Note: LU-3240 (commit 762f2114d282a98ebfa4dbbeea9298a8088ad24e)
1423 * set parent dir fid the same as child fid in getattr by fid case
1424 * we should not lu_object_find() the object again, could lead
1425 * to hung if there is a concurrent unlink destroyed the object.
1427 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
1428 mdt_object_get(info->mti_env, parent);
1431 child = mdt_object_find(info->mti_env, info->mti_mdt,
1435 if (unlikely(IS_ERR(child)))
1436 GOTO(out_parent, rc = PTR_ERR(child));
1438 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout * 2);
1439 rc = mdt_check_resent_lock(info, child, lhc);
1441 GOTO(out_child, rc);
1442 } else if (rc > 0) {
1443 mdt_lock_handle_init(lhc);
1444 mdt_lock_reg_init(lhc, LCK_PR);
1447 if (!mdt_object_exists(child)) {
1448 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1450 "Object doesn't exist!\n");
1451 GOTO(out_child, rc = -ENOENT);
1454 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1455 mdt_object_exists(child) && !mdt_object_remote(child)) {
1456 struct md_attr *ma = &info->mti_attr;
1459 ma->ma_need = MA_INODE;
1460 rc = mdt_attr_get_complex(info, child, ma);
1461 if (unlikely(rc != 0))
1462 GOTO(out_child, rc);
1464 /* If the file has not been changed for some time, we
1465 * return not only a LOOKUP lock, but also an UPDATE
1466 * lock and this might save us RPC on later STAT. For
1467 * directories, it also let negative dentry cache start
1468 * working for this dir. */
1469 if (ma->ma_valid & MA_INODE &&
1470 ma->ma_attr.la_valid & LA_CTIME &&
1471 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1472 ma->ma_attr.la_ctime < cfs_time_current_sec())
1473 child_bits |= MDS_INODELOCK_UPDATE;
1476 /* layout lock must be granted in a best-effort way
1477 * for IT operations */
1478 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1479 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1480 exp_connect_layout(info->mti_exp) &&
1481 S_ISREG(lu_object_attr(&child->mot_obj)) &&
1482 !mdt_object_remote(child) && ldlm_rep != NULL) {
1483 /* try to grant layout lock for regular file. */
1489 child_bits |= MDS_INODELOCK_LAYOUT;
1490 /* try layout lock, it may fail to be granted due to
1491 * contention at LOOKUP or UPDATE */
1492 if (!mdt_object_lock_try(info, child, lhc,
1494 child_bits &= ~MDS_INODELOCK_LAYOUT;
1495 LASSERT(child_bits != 0);
1496 rc = mdt_object_lock(info, child, lhc,
1502 /* Do not enqueue the UPDATE lock from MDT(cross-MDT),
1503 * client will enqueue the lock to the remote MDT */
1504 if (mdt_object_remote(child))
1505 child_bits &= ~MDS_INODELOCK_UPDATE;
1506 rc = mdt_object_lock(info, child, lhc, child_bits);
1508 if (unlikely(rc != 0))
1509 GOTO(out_child, rc);
1512 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1514 /* finally, we can get attr for child. */
1515 rc = mdt_getattr_internal(info, child, ma_need);
1516 if (unlikely(rc != 0)) {
1517 mdt_object_unlock(info, child, lhc, 1);
1519 /* Debugging code. */
1520 LDLM_DEBUG(lock, "Returning lock to client");
1521 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1522 &lock->l_resource->lr_name),
1523 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1524 PLDLMRES(lock->l_resource),
1525 PFID(mdt_object_fid(child)));
1528 LDLM_LOCK_PUT(lock);
1532 mdt_object_put(info->mti_env, child);
1535 mdt_object_unlock(info, parent, lhp, 1);
1539 /* normal handler: should release the child lock */
1540 static int mdt_getattr_name(struct tgt_session_info *tsi)
1542 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1543 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1544 struct mdt_body *reqbody;
1545 struct mdt_body *repbody;
1549 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1550 LASSERT(reqbody != NULL);
1551 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1552 LASSERT(repbody != NULL);
1554 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1555 repbody->mbo_eadatasize = 0;
1556 repbody->mbo_aclsize = 0;
1558 rc = mdt_init_ucred(info, reqbody);
1560 GOTO(out_shrink, rc);
1562 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1563 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1564 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1565 lhc->mlh_reg_lh.cookie = 0;
1567 mdt_exit_ucred(info);
1570 mdt_client_compatibility(info);
1571 rc2 = mdt_fix_reply(info);
1574 mdt_thread_info_fini(info);
1578 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1579 void *karg, void *uarg);
1581 static int mdt_set_info(struct tgt_session_info *tsi)
1583 struct ptlrpc_request *req = tgt_ses_req(tsi);
1586 int keylen, vallen, rc = 0;
1590 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
1592 DEBUG_REQ(D_HA, req, "no set_info key");
1593 RETURN(err_serious(-EFAULT));
1596 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
1599 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
1601 DEBUG_REQ(D_HA, req, "no set_info val");
1602 RETURN(err_serious(-EFAULT));
1605 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
1608 /* Swab any part of val you need to here */
1609 if (KEY_IS(KEY_READ_ONLY)) {
1610 spin_lock(&req->rq_export->exp_lock);
1612 *exp_connect_flags_ptr(req->rq_export) |=
1615 *exp_connect_flags_ptr(req->rq_export) &=
1616 ~OBD_CONNECT_RDONLY;
1617 spin_unlock(&req->rq_export->exp_lock);
1618 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1619 struct changelog_setinfo *cs = val;
1621 if (vallen != sizeof(*cs)) {
1622 CERROR("%s: bad changelog_clear setinfo size %d\n",
1623 tgt_name(tsi->tsi_tgt), vallen);
1626 if (ptlrpc_req_need_swab(req)) {
1627 __swab64s(&cs->cs_recno);
1628 __swab32s(&cs->cs_id);
1631 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
1639 static int mdt_readpage(struct tgt_session_info *tsi)
1641 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
1642 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
1643 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1644 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
1645 struct mdt_body *repbody;
1651 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1652 RETURN(err_serious(-ENOMEM));
1654 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
1655 if (repbody == NULL || reqbody == NULL)
1656 RETURN(err_serious(-EFAULT));
1659 * prepare @rdpg before calling lower layers and transfer itself. Here
1660 * reqbody->size contains offset of where to start to read and
1661 * reqbody->nlink contains number bytes to read.
1663 rdpg->rp_hash = reqbody->mbo_size;
1664 if (rdpg->rp_hash != reqbody->mbo_size) {
1665 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1666 rdpg->rp_hash, reqbody->mbo_size);
1670 rdpg->rp_attrs = reqbody->mbo_mode;
1671 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
1672 rdpg->rp_attrs |= LUDA_64BITHASH;
1673 rdpg->rp_count = min_t(unsigned int, reqbody->mbo_nlink,
1674 exp_max_brw_size(tsi->tsi_exp));
1675 rdpg->rp_npages = (rdpg->rp_count + PAGE_CACHE_SIZE - 1) >>
1677 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1678 if (rdpg->rp_pages == NULL)
1681 for (i = 0; i < rdpg->rp_npages; ++i) {
1682 rdpg->rp_pages[i] = alloc_page(GFP_IOFS);
1683 if (rdpg->rp_pages[i] == NULL)
1684 GOTO(free_rdpg, rc = -ENOMEM);
1687 /* call lower layers to fill allocated pages with directory data */
1688 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
1690 GOTO(free_rdpg, rc);
1692 /* send pages to client */
1693 rc = tgt_sendpage(tsi, rdpg, rc);
1698 for (i = 0; i < rdpg->rp_npages; i++)
1699 if (rdpg->rp_pages[i] != NULL)
1700 __free_page(rdpg->rp_pages[i]);
1701 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1703 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1709 static int mdt_reint_internal(struct mdt_thread_info *info,
1710 struct mdt_lock_handle *lhc,
1713 struct req_capsule *pill = info->mti_pill;
1714 struct mdt_body *repbody;
1719 rc = mdt_reint_unpack(info, op);
1721 CERROR("Can't unpack reint, rc %d\n", rc);
1722 RETURN(err_serious(rc));
1725 /* for replay (no_create) lmm is not needed, client has it already */
1726 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1727 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1730 /* llog cookies are always 0, the field is kept for compatibility */
1731 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1732 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
1734 rc = req_capsule_server_pack(pill);
1736 CERROR("Can't pack response, rc %d\n", rc);
1737 RETURN(err_serious(rc));
1740 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1741 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1743 repbody->mbo_eadatasize = 0;
1744 repbody->mbo_aclsize = 0;
1747 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1749 /* for replay no cookkie / lmm need, because client have this already */
1750 if (info->mti_spec.no_create)
1751 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1752 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1754 rc = mdt_init_ucred_reint(info);
1756 GOTO(out_shrink, rc);
1758 rc = mdt_fix_attr_ucred(info, op);
1760 GOTO(out_ucred, rc = err_serious(rc));
1762 rc = mdt_check_resent(info, mdt_reconstruct, lhc);
1764 GOTO(out_ucred, rc);
1765 } else if (rc == 1) {
1766 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
1767 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1768 GOTO(out_ucred, rc);
1770 rc = mdt_reint_rec(info, lhc);
1773 mdt_exit_ucred(info);
1775 mdt_client_compatibility(info);
1776 rc2 = mdt_fix_reply(info);
1782 static long mdt_reint_opcode(struct ptlrpc_request *req,
1783 const struct req_format **fmt)
1785 struct mdt_device *mdt;
1786 struct mdt_rec_reint *rec;
1789 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
1791 opc = rec->rr_opcode;
1792 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
1793 if (opc < REINT_MAX && fmt[opc] != NULL)
1794 req_capsule_extend(&req->rq_pill, fmt[opc]);
1796 mdt = mdt_exp2dev(req->rq_export);
1797 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
1798 " rc = %d\n", req->rq_export->exp_obd->obd_name,
1799 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
1800 opc = err_serious(-EFAULT);
1803 opc = err_serious(-EFAULT);
1808 static int mdt_reint(struct tgt_session_info *tsi)
1812 static const struct req_format *reint_fmts[REINT_MAX] = {
1813 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1814 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1815 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1816 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1817 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1818 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1819 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
1820 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
1821 [REINT_MIGRATE] = &RQF_MDS_REINT_RENAME
1826 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
1828 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1830 * No lock possible here from client to pass it to reint code
1833 rc = mdt_reint_internal(info, NULL, opc);
1834 mdt_thread_info_fini(info);
1839 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1843 /* this should sync the whole device */
1844 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1846 struct dt_device *dt = mdt->mdt_bottom;
1850 rc = dt->dd_ops->dt_sync(env, dt);
1854 /* this should sync this object */
1855 static int mdt_object_sync(struct mdt_thread_info *info)
1857 struct md_object *next;
1861 if (!mdt_object_exists(info->mti_object)) {
1862 CWARN("%s: non existing object "DFID": rc = %d\n",
1863 mdt_obd_name(info->mti_mdt),
1864 PFID(mdt_object_fid(info->mti_object)), -ESTALE);
1867 next = mdt_object_child(info->mti_object);
1868 rc = mo_object_sync(info->mti_env, next);
1873 static int mdt_sync(struct tgt_session_info *tsi)
1875 struct ptlrpc_request *req = tgt_ses_req(tsi);
1876 struct req_capsule *pill = tsi->tsi_pill;
1877 struct mdt_body *body;
1882 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1883 RETURN(err_serious(-ENOMEM));
1885 if (fid_seq(&tsi->tsi_mdt_body->mbo_fid1) == 0) {
1886 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
1888 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1890 /* sync an object */
1891 rc = mdt_object_sync(info);
1893 const struct lu_fid *fid;
1894 struct lu_attr *la = &info->mti_attr.ma_attr;
1896 info->mti_attr.ma_need = MA_INODE;
1897 info->mti_attr.ma_valid = 0;
1898 rc = mdt_attr_get_complex(info, info->mti_object,
1901 body = req_capsule_server_get(pill,
1903 fid = mdt_object_fid(info->mti_object);
1904 mdt_pack_attr2body(info, body, la, fid);
1907 mdt_thread_info_fini(info);
1910 mdt_counter_incr(req, LPROC_MDT_SYNC);
1916 * Handle quota control requests to consult current usage/limit, but also
1917 * to configure quota enforcement
1919 static int mdt_quotactl(struct tgt_session_info *tsi)
1921 struct obd_export *exp = tsi->tsi_exp;
1922 struct req_capsule *pill = tsi->tsi_pill;
1923 struct obd_quotactl *oqctl, *repoqc;
1925 struct mdt_device *mdt = mdt_exp2dev(exp);
1926 struct lu_device *qmt = mdt->mdt_qmt_dev;
1927 struct lu_nodemap *nodemap = exp->exp_target_data.ted_nodemap;
1930 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1932 RETURN(err_serious(-EPROTO));
1934 rc = req_capsule_server_pack(pill);
1936 RETURN(err_serious(rc));
1938 switch (oqctl->qc_cmd) {
1939 /* master quotactl */
1942 if (!nodemap_can_setquota(nodemap))
1947 RETURN(-EOPNOTSUPP);
1948 /* slave quotactl */
1953 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
1957 /* map uid/gid for remote client */
1959 if (exp_connect_rmtclient(exp)) {
1960 struct lustre_idmap_table *idmap;
1962 idmap = exp->exp_mdt_data.med_idmap;
1964 if (unlikely(oqctl->qc_cmd != Q_GETQUOTA &&
1965 oqctl->qc_cmd != Q_GETINFO))
1968 if (oqctl->qc_type == USRQUOTA)
1969 id = lustre_idmap_lookup_uid(NULL, idmap, 0,
1971 else if (oqctl->qc_type == GRPQUOTA)
1972 id = lustre_idmap_lookup_gid(NULL, idmap, 0,
1977 if (id == CFS_IDMAP_NOTFOUND) {
1978 CDEBUG(D_QUOTA, "no mapping for id %u\n", oqctl->qc_id);
1983 if (oqctl->qc_type == USRQUOTA)
1984 id = nodemap_map_id(nodemap, NODEMAP_UID,
1985 NODEMAP_CLIENT_TO_FS, id);
1986 else if (oqctl->qc_type == GRPQUOTA)
1987 id = nodemap_map_id(nodemap, NODEMAP_UID,
1988 NODEMAP_CLIENT_TO_FS, id);
1990 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
1992 RETURN(err_serious(-EFAULT));
1994 if (oqctl->qc_id != id)
1995 swap(oqctl->qc_id, id);
1997 switch (oqctl->qc_cmd) {
2003 /* forward quotactl request to QMT */
2004 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
2009 /* slave quotactl */
2010 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
2015 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2019 if (oqctl->qc_id != id)
2020 swap(oqctl->qc_id, id);
2026 /** clone llog ctxt from child (mdd)
2027 * This allows remote llog (replicator) access.
2028 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2029 * context was originally set up, or we can handle them directly.
2030 * I choose the latter, but that means I need any llog
2031 * contexts set up by child to be accessable by the mdt. So we clone the
2032 * context into our context list here.
2034 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2037 struct md_device *next = mdt->mdt_child;
2038 struct llog_ctxt *ctxt;
2041 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2044 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2045 if (rc || ctxt == NULL) {
2049 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2051 CERROR("Can't set mdt ctxt %d\n", rc);
2056 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2057 struct mdt_device *mdt, int idx)
2059 struct llog_ctxt *ctxt;
2061 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2064 /* Put once for the get we just did, and once for the clone */
2065 llog_ctxt_put(ctxt);
2066 llog_ctxt_put(ctxt);
2071 * sec context handlers
2073 static int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
2077 rc = mdt_handle_idmap(tsi);
2079 struct ptlrpc_request *req = tgt_ses_req(tsi);
2082 opc = lustre_msg_get_opc(req->rq_reqmsg);
2083 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
2084 sptlrpc_svc_ctx_invalidate(req);
2087 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2093 * quota request handlers
2095 static int mdt_quota_dqacq(struct tgt_session_info *tsi)
2097 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2098 struct lu_device *qmt = mdt->mdt_qmt_dev;
2103 RETURN(err_serious(-EOPNOTSUPP));
2105 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
2109 struct mdt_object *mdt_object_new(const struct lu_env *env,
2110 struct mdt_device *d,
2111 const struct lu_fid *f)
2113 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2114 struct lu_object *o;
2115 struct mdt_object *m;
2118 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2119 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
2120 if (unlikely(IS_ERR(o)))
2121 m = (struct mdt_object *)o;
2127 struct mdt_object *mdt_object_find(const struct lu_env *env,
2128 struct mdt_device *d,
2129 const struct lu_fid *f)
2131 struct lu_object *o;
2132 struct mdt_object *m;
2135 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2136 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
2137 if (unlikely(IS_ERR(o)))
2138 m = (struct mdt_object *)o;
2146 * Asyncronous commit for mdt device.
2148 * Pass asynchonous commit call down the MDS stack.
2150 * \param env environment
2151 * \param mdt the mdt device
2153 static void mdt_device_commit_async(const struct lu_env *env,
2154 struct mdt_device *mdt)
2156 struct dt_device *dt = mdt->mdt_bottom;
2159 rc = dt->dd_ops->dt_commit_async(env, dt);
2160 if (unlikely(rc != 0))
2161 CWARN("%s: async commit start failed: rc = %d\n",
2162 mdt_obd_name(mdt), rc);
2166 * Mark the lock as "synchonous".
2168 * Mark the lock to deffer transaction commit to the unlock time.
2170 * \param lock the lock to mark as "synchonous"
2172 * \see mdt_is_lock_sync
2173 * \see mdt_save_lock
2175 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2177 lock->l_ast_data = (void*)1;
2181 * Check whehter the lock "synchonous" or not.
2183 * \param lock the lock to check
2184 * \retval 1 the lock is "synchonous"
2185 * \retval 0 the lock isn't "synchronous"
2187 * \see mdt_set_lock_sync
2188 * \see mdt_save_lock
2190 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2192 return lock->l_ast_data != NULL;
2196 * Blocking AST for mdt locks.
2198 * Starts transaction commit if in case of COS lock conflict or
2199 * deffers such a commit to the mdt_save_lock.
2201 * \param lock the lock which blocks a request or cancelling lock
2202 * \param desc unused
2203 * \param data unused
2204 * \param flag indicates whether this cancelling or blocking callback
2206 * \see ldlm_blocking_ast_nocheck
2208 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2209 void *data, int flag)
2211 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2212 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2216 if (flag == LDLM_CB_CANCELING)
2218 lock_res_and_lock(lock);
2219 if (lock->l_blocking_ast != mdt_blocking_ast) {
2220 unlock_res_and_lock(lock);
2223 if (mdt_cos_is_enabled(mdt) &&
2224 lock->l_req_mode & (LCK_PW | LCK_EX) &&
2225 lock->l_blocking_lock != NULL &&
2226 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
2227 mdt_set_lock_sync(lock);
2229 rc = ldlm_blocking_ast_nocheck(lock);
2231 /* There is no lock conflict if l_blocking_lock == NULL,
2232 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2233 * when the last reference to a local lock was released */
2234 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2237 rc = lu_env_init(&env, LCT_LOCAL);
2238 if (unlikely(rc != 0))
2239 CWARN("%s: lu_env initialization failed, cannot "
2240 "start asynchronous commit: rc = %d\n",
2243 mdt_device_commit_async(&env, mdt);
2249 /* Used for cross-MDT lock */
2250 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2251 void *data, int flag)
2253 struct lustre_handle lockh;
2257 case LDLM_CB_BLOCKING:
2258 ldlm_lock2handle(lock, &lockh);
2259 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
2261 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2265 case LDLM_CB_CANCELING:
2266 LDLM_DEBUG(lock, "Revoke remote lock\n");
2274 int mdt_check_resent_lock(struct mdt_thread_info *info,
2275 struct mdt_object *mo,
2276 struct mdt_lock_handle *lhc)
2278 /* the lock might already be gotten in ldlm_handle_enqueue() */
2279 if (unlikely(lustre_handle_is_used(&lhc->mlh_reg_lh))) {
2280 struct ptlrpc_request *req = mdt_info_req(info);
2281 struct ldlm_lock *lock;
2283 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
2284 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
2286 /* Lock is pinned by ldlm_handle_enqueue0() as it is
2287 * a resend case, however, it could be already destroyed
2288 * due to client eviction or a raced cancel RPC. */
2289 LDLM_DEBUG_NOLOCK("Invalid lock handle "LPX64"\n",
2290 lhc->mlh_reg_lh.cookie);
2294 if (!fid_res_name_eq(mdt_object_fid(mo),
2295 &lock->l_resource->lr_name)) {
2296 CWARN("%s: Although resent, but still not "
2297 "get child lock:"DFID"\n",
2298 info->mti_exp->exp_obd->obd_name,
2299 PFID(mdt_object_fid(mo)));
2300 LDLM_LOCK_PUT(lock);
2303 LDLM_LOCK_PUT(lock);
2309 int mdt_remote_object_lock(struct mdt_thread_info *mti,
2310 struct mdt_object *o, const struct lu_fid *fid,
2311 struct lustre_handle *lh, ldlm_mode_t mode,
2314 struct ldlm_enqueue_info *einfo = &mti->mti_einfo;
2315 ldlm_policy_data_t *policy = &mti->mti_policy;
2316 struct ldlm_res_id *res_id = &mti->mti_res_id;
2320 LASSERT(mdt_object_remote(o));
2322 fid_build_reg_res_name(fid, res_id);
2324 memset(einfo, 0, sizeof(*einfo));
2325 einfo->ei_type = LDLM_IBITS;
2326 einfo->ei_mode = mode;
2327 einfo->ei_cb_bl = mdt_remote_blocking_ast;
2328 einfo->ei_cb_cp = ldlm_completion_ast;
2329 einfo->ei_enq_slave = 0;
2330 einfo->ei_res_id = res_id;
2332 memset(policy, 0, sizeof(*policy));
2333 policy->l_inodebits.bits = ibits;
2335 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
2340 static int mdt_object_local_lock(struct mdt_thread_info *info,
2341 struct mdt_object *o,
2342 struct mdt_lock_handle *lh, __u64 ibits,
2345 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2346 ldlm_policy_data_t *policy = &info->mti_policy;
2347 struct ldlm_res_id *res_id = &info->mti_res_id;
2352 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2353 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2354 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2355 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2357 /* Only enqueue LOOKUP lock for remote object */
2358 if (mdt_object_remote(o))
2359 LASSERT(ibits == MDS_INODELOCK_LOOKUP);
2361 if (lh->mlh_type == MDT_PDO_LOCK) {
2362 /* check for exists after object is locked */
2363 if (mdt_object_exists(o) == 0) {
2364 /* Non-existent object shouldn't have PDO lock */
2367 /* Non-dir object shouldn't have PDO lock */
2368 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
2373 memset(policy, 0, sizeof(*policy));
2374 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2376 dlmflags = LDLM_FL_ATOMIC_CB;
2378 dlmflags |= LDLM_FL_BLOCK_NOWAIT;
2381 * Take PDO lock on whole directory and build correct @res_id for lock
2382 * on part of directory.
2384 if (lh->mlh_pdo_hash != 0) {
2385 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2386 mdt_lock_pdo_mode(info, o, lh);
2387 if (lh->mlh_pdo_mode != LCK_NL) {
2389 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2390 * is never going to be sent to client and we do not
2391 * want it slowed down due to possible cancels.
2393 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2394 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2395 policy, res_id, dlmflags,
2396 info->mti_exp == NULL ? NULL :
2397 &info->mti_exp->exp_handle.h_cookie);
2398 if (unlikely(rc != 0))
2399 GOTO(out_unlock, rc);
2403 * Finish res_id initializing by name hash marking part of
2404 * directory which is taking modification.
2406 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2409 policy->l_inodebits.bits = ibits;
2412 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2413 * going to be sent to client. If it is - mdt_intent_policy() path will
2414 * fix it up and turn FL_LOCAL flag off.
2416 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2417 res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
2418 info->mti_exp == NULL ? NULL :
2419 &info->mti_exp->exp_handle.h_cookie);
2422 mdt_object_unlock(info, o, lh, 1);
2423 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2424 lh->mlh_pdo_hash != 0 &&
2425 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
2426 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2432 mdt_object_lock_internal(struct mdt_thread_info *info, struct mdt_object *o,
2433 struct mdt_lock_handle *lh, __u64 ibits,
2439 if (!mdt_object_remote(o))
2440 return mdt_object_local_lock(info, o, lh, ibits, nonblock);
2442 /* XXX do not support PERM/LAYOUT/XATTR lock for remote object yet */
2443 ibits &= ~(MDS_INODELOCK_PERM | MDS_INODELOCK_LAYOUT |
2444 MDS_INODELOCK_XATTR);
2445 if (ibits & MDS_INODELOCK_UPDATE) {
2446 /* Sigh, PDO needs to enqueue 2 locks right now, but
2447 * enqueue RPC can only request 1 lock, to avoid extra
2448 * RPC, so it will instead enqueue EX lock for remote
2449 * object anyway XXX*/
2450 if (lh->mlh_type == MDT_PDO_LOCK &&
2451 lh->mlh_pdo_hash != 0) {
2452 CDEBUG(D_INFO, "%s: "DFID" convert PDO lock to"
2453 "EX lock.\n", mdt_obd_name(info->mti_mdt),
2454 PFID(mdt_object_fid(o)));
2455 lh->mlh_pdo_hash = 0;
2456 lh->mlh_rreg_mode = LCK_EX;
2457 lh->mlh_type = MDT_REG_LOCK;
2459 rc = mdt_remote_object_lock(info, o, mdt_object_fid(o),
2462 MDS_INODELOCK_UPDATE);
2467 /* Only enqueue LOOKUP lock for remote object */
2468 if (ibits & MDS_INODELOCK_LOOKUP) {
2469 rc = mdt_object_local_lock(info, o, lh,
2470 MDS_INODELOCK_LOOKUP,
2479 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2480 struct mdt_lock_handle *lh, __u64 ibits)
2482 return mdt_object_lock_internal(info, o, lh, ibits, false);
2485 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
2486 struct mdt_lock_handle *lh, __u64 ibits)
2488 struct mdt_lock_handle tmp = *lh;
2491 rc = mdt_object_lock_internal(info, o, &tmp, ibits, true);
2499 * Save a lock within request object.
2501 * Keep the lock referenced until whether client ACK or transaction
2502 * commit happens or release the lock immediately depending on input
2503 * parameters. If COS is ON, a write lock is converted to COS lock
2506 * \param info thead info object
2507 * \param h lock handle
2508 * \param mode lock mode
2509 * \param decref force immediate lock releasing
2512 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2513 ldlm_mode_t mode, int decref)
2517 if (lustre_handle_is_used(h)) {
2518 if (decref || !info->mti_has_trans ||
2519 !(mode & (LCK_PW | LCK_EX))){
2520 mdt_fid_unlock(h, mode);
2522 struct mdt_device *mdt = info->mti_mdt;
2523 struct ldlm_lock *lock = ldlm_handle2lock(h);
2524 struct ptlrpc_request *req = mdt_info_req(info);
2527 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2529 /* there is no request if mdt_object_unlock() is called
2530 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
2531 if (likely(req != NULL)) {
2532 CDEBUG(D_HA, "request = %p reply state = %p"
2533 " transno = "LPD64"\n", req,
2534 req->rq_reply_state, req->rq_transno);
2535 if (mdt_cos_is_enabled(mdt)) {
2537 ldlm_lock_downgrade(lock, LCK_COS);
2540 ptlrpc_save_lock(req, h, mode, no_ack);
2542 ldlm_lock_decref(h, mode);
2544 if (mdt_is_lock_sync(lock)) {
2545 CDEBUG(D_HA, "found sync-lock,"
2546 " async commit started\n");
2547 mdt_device_commit_async(info->mti_env,
2550 LDLM_LOCK_PUT(lock);
2559 * Unlock mdt object.
2561 * Immeditely release the regular lock and the PDO lock or save the
2562 * lock in request and keep them referenced until client ACK or
2563 * transaction commit.
2565 * \param info thread info object
2566 * \param o mdt object
2567 * \param lh mdt lock handle referencing regular and PDO locks
2568 * \param decref force immediate lock releasing
2570 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2571 struct mdt_lock_handle *lh, int decref)
2575 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2576 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2578 if (lustre_handle_is_used(&lh->mlh_rreg_lh))
2579 ldlm_lock_decref(&lh->mlh_rreg_lh, lh->mlh_rreg_mode);
2584 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2585 const struct lu_fid *f,
2586 struct mdt_lock_handle *lh,
2589 struct mdt_object *o;
2591 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2595 rc = mdt_object_lock(info, o, lh, ibits);
2597 mdt_object_put(info->mti_env, o);
2604 void mdt_object_unlock_put(struct mdt_thread_info * info,
2605 struct mdt_object * o,
2606 struct mdt_lock_handle *lh,
2609 mdt_object_unlock(info, o, lh, decref);
2610 mdt_object_put(info->mti_env, o);
2614 * Generic code handling requests that have struct mdt_body passed in:
2616 * - extract mdt_body from request and save it in @info, if present;
2618 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2621 * - if HABEO_CORPUS flag is set for this request type check whether object
2622 * actually exists on storage (lu_object_exists()).
2625 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2627 const struct mdt_body *body;
2628 struct mdt_object *obj;
2629 const struct lu_env *env;
2630 struct req_capsule *pill;
2634 env = info->mti_env;
2635 pill = info->mti_pill;
2637 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2641 if (!(body->mbo_valid & OBD_MD_FLID))
2644 if (!fid_is_sane(&body->mbo_fid1)) {
2645 CERROR("Invalid fid: "DFID"\n", PFID(&body->mbo_fid1));
2649 obj = mdt_object_find(env, info->mti_mdt, &body->mbo_fid1);
2651 if ((flags & HABEO_CORPUS) && !mdt_object_exists(obj)) {
2652 mdt_object_put(env, obj);
2655 info->mti_object = obj;
2664 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2666 struct req_capsule *pill = info->mti_pill;
2670 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2671 rc = mdt_body_unpack(info, flags);
2675 if (rc == 0 && (flags & HABEO_REFERO)) {
2677 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2678 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2680 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2681 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
2684 rc = req_capsule_server_pack(pill);
2689 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2691 lh->mlh_type = MDT_NUL_LOCK;
2692 lh->mlh_reg_lh.cookie = 0ull;
2693 lh->mlh_reg_mode = LCK_MINMODE;
2694 lh->mlh_pdo_lh.cookie = 0ull;
2695 lh->mlh_pdo_mode = LCK_MINMODE;
2696 lh->mlh_rreg_lh.cookie = 0ull;
2697 lh->mlh_rreg_mode = LCK_MINMODE;
2700 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2702 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2703 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2707 * Initialize fields of struct mdt_thread_info. Other fields are left in
2708 * uninitialized state, because it's too expensive to zero out whole
2709 * mdt_thread_info (> 1K) on each request arrival.
2711 void mdt_thread_info_init(struct ptlrpc_request *req,
2712 struct mdt_thread_info *info)
2716 info->mti_pill = &req->rq_pill;
2719 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2720 mdt_lock_handle_init(&info->mti_lh[i]);
2722 /* mdt device: it can be NULL while CONNECT */
2723 if (req->rq_export) {
2724 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2725 info->mti_exp = req->rq_export;
2727 info->mti_mdt = NULL;
2728 info->mti_env = req->rq_svc_thread->t_env;
2729 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2731 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2732 info->mti_big_buf = LU_BUF_NULL;
2733 info->mti_body = NULL;
2734 info->mti_object = NULL;
2735 info->mti_dlm_req = NULL;
2736 info->mti_has_trans = 0;
2737 info->mti_cross_ref = 0;
2738 info->mti_opdata = 0;
2739 info->mti_big_lmm_used = 0;
2741 info->mti_spec.no_create = 0;
2742 info->mti_spec.sp_rm_entry = 0;
2743 info->mti_spec.sp_permitted = 0;
2745 info->mti_spec.u.sp_ea.eadata = NULL;
2746 info->mti_spec.u.sp_ea.eadatalen = 0;
2749 void mdt_thread_info_fini(struct mdt_thread_info *info)
2753 if (info->mti_object != NULL) {
2754 mdt_object_put(info->mti_env, info->mti_object);
2755 info->mti_object = NULL;
2758 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2759 mdt_lock_handle_fini(&info->mti_lh[i]);
2760 info->mti_env = NULL;
2761 info->mti_pill = NULL;
2762 info->mti_exp = NULL;
2764 if (unlikely(info->mti_big_buf.lb_buf != NULL))
2765 lu_buf_free(&info->mti_big_buf);
2768 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
2770 struct mdt_thread_info *mti;
2772 mti = mdt_th_info(tsi->tsi_env);
2773 LASSERT(mti != NULL);
2775 mdt_thread_info_init(tgt_ses_req(tsi), mti);
2776 if (tsi->tsi_corpus != NULL) {
2777 mti->mti_object = mdt_obj(tsi->tsi_corpus);
2778 lu_object_get(tsi->tsi_corpus);
2780 mti->mti_body = tsi->tsi_mdt_body;
2781 mti->mti_dlm_req = tsi->tsi_dlm_req;
2786 static int mdt_tgt_connect(struct tgt_session_info *tsi)
2788 struct ptlrpc_request *req = tgt_ses_req(tsi);
2793 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_DELAY_CONDITIONAL) &&
2795 tsi2mdt_info(tsi)->mti_mdt->mdt_seq_site.ss_node_id) {
2796 set_current_state(TASK_UNINTERRUPTIBLE);
2797 schedule_timeout(msecs_to_jiffies(3 * MSEC_PER_SEC));
2800 rc = tgt_connect(tsi);
2804 rc = mdt_init_idmap(tsi);
2809 obd_disconnect(class_export_get(req->rq_export));
2828 static int mdt_intent_getattr(enum mdt_it_code opcode,
2829 struct mdt_thread_info *info,
2830 struct ldlm_lock **,
2833 static int mdt_intent_getxattr(enum mdt_it_code opcode,
2834 struct mdt_thread_info *info,
2835 struct ldlm_lock **lockp,
2838 static int mdt_intent_layout(enum mdt_it_code opcode,
2839 struct mdt_thread_info *info,
2840 struct ldlm_lock **,
2842 static int mdt_intent_reint(enum mdt_it_code opcode,
2843 struct mdt_thread_info *info,
2844 struct ldlm_lock **,
2847 static struct mdt_it_flavor {
2848 const struct req_format *it_fmt;
2850 int (*it_act)(enum mdt_it_code ,
2851 struct mdt_thread_info *,
2852 struct ldlm_lock **,
2855 } mdt_it_flavor[] = {
2857 .it_fmt = &RQF_LDLM_INTENT,
2858 /*.it_flags = HABEO_REFERO,*/
2860 .it_act = mdt_intent_reint,
2861 .it_reint = REINT_OPEN
2864 .it_fmt = &RQF_LDLM_INTENT,
2866 * OCREAT is not a MUTABOR request as if the file
2868 * We do the extra check of OBD_CONNECT_RDONLY in
2869 * mdt_reint_open() when we really need to create
2873 .it_act = mdt_intent_reint,
2874 .it_reint = REINT_OPEN
2877 .it_fmt = &RQF_LDLM_INTENT,
2878 .it_flags = MUTABOR,
2879 .it_act = mdt_intent_reint,
2880 .it_reint = REINT_CREATE
2882 [MDT_IT_GETATTR] = {
2883 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2884 .it_flags = HABEO_REFERO,
2885 .it_act = mdt_intent_getattr
2887 [MDT_IT_READDIR] = {
2893 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2894 .it_flags = HABEO_REFERO,
2895 .it_act = mdt_intent_getattr
2898 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
2899 .it_flags = MUTABOR,
2901 .it_reint = REINT_UNLINK
2905 .it_flags = MUTABOR,
2908 [MDT_IT_GETXATTR] = {
2909 .it_fmt = &RQF_LDLM_INTENT_GETXATTR,
2910 .it_flags = HABEO_CORPUS,
2911 .it_act = mdt_intent_getxattr
2914 .it_fmt = &RQF_LDLM_INTENT_LAYOUT,
2916 .it_act = mdt_intent_layout
2921 mdt_intent_lock_replace(struct mdt_thread_info *info,
2922 struct ldlm_lock **lockp,
2923 struct mdt_lock_handle *lh,
2926 struct ptlrpc_request *req = mdt_info_req(info);
2927 struct ldlm_lock *lock = *lockp;
2928 struct ldlm_lock *new_lock;
2930 /* If possible resent found a lock, @lh is set to its handle */
2931 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
2933 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
2934 lh->mlh_reg_lh.cookie = 0;
2938 LASSERTF(new_lock != NULL,
2939 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
2942 * If we've already given this lock to a client once, then we should
2943 * have no readers or writers. Otherwise, we should have one reader
2944 * _or_ writer ref (which will be zeroed below) before returning the
2947 if (new_lock->l_export == req->rq_export) {
2948 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
2950 LASSERT(new_lock->l_export == NULL);
2951 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
2956 if (new_lock->l_export == req->rq_export) {
2958 * Already gave this to the client, which means that we
2959 * reconstructed a reply.
2961 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
2964 LDLM_LOCK_RELEASE(new_lock);
2965 lh->mlh_reg_lh.cookie = 0;
2966 RETURN(ELDLM_LOCK_REPLACED);
2970 * Fixup the lock to be given to the client.
2972 lock_res_and_lock(new_lock);
2973 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
2974 * possible blocking AST. */
2975 while (new_lock->l_readers > 0) {
2976 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
2977 lu_ref_del(&new_lock->l_reference, "user", new_lock);
2978 new_lock->l_readers--;
2980 while (new_lock->l_writers > 0) {
2981 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
2982 lu_ref_del(&new_lock->l_reference, "user", new_lock);
2983 new_lock->l_writers--;
2986 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
2987 new_lock->l_blocking_ast = lock->l_blocking_ast;
2988 new_lock->l_completion_ast = lock->l_completion_ast;
2989 new_lock->l_remote_handle = lock->l_remote_handle;
2990 new_lock->l_flags &= ~LDLM_FL_LOCAL;
2992 unlock_res_and_lock(new_lock);
2994 cfs_hash_add(new_lock->l_export->exp_lock_hash,
2995 &new_lock->l_remote_handle,
2996 &new_lock->l_exp_hash);
2998 LDLM_LOCK_RELEASE(new_lock);
2999 lh->mlh_reg_lh.cookie = 0;
3001 RETURN(ELDLM_LOCK_REPLACED);
3004 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3005 struct ldlm_lock *new_lock,
3006 struct mdt_lock_handle *lh,
3009 struct ptlrpc_request *req = mdt_info_req(info);
3010 struct ldlm_request *dlmreq;
3012 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3015 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3017 /* Check if this is a resend case (MSG_RESENT is set on RPC) and a
3018 * lock was found by ldlm_handle_enqueue(); if so @lh must be
3020 if (flags & LDLM_FL_RESENT) {
3021 lh->mlh_reg_lh.cookie = new_lock->l_handle.h_cookie;
3022 lh->mlh_reg_mode = new_lock->l_granted_mode;
3024 LDLM_DEBUG(new_lock, "Restoring lock cookie");
3025 DEBUG_REQ(D_DLMTRACE, req, "restoring lock cookie "LPX64,
3026 lh->mlh_reg_lh.cookie);
3031 * If the xid matches, then we know this is a resent request, and allow
3032 * it. (It's probably an OPEN, for which we don't send a lock.
3034 if (req_can_reconstruct(req, NULL))
3038 * This remote handle isn't enqueued, so we never received or processed
3039 * this request. Clear MSG_RESENT, because it can be handled like any
3040 * normal request now.
3042 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3044 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
3045 dlmreq->lock_handle[0].cookie);
3048 static int mdt_intent_getxattr(enum mdt_it_code opcode,
3049 struct mdt_thread_info *info,
3050 struct ldlm_lock **lockp,
3053 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3054 struct ldlm_reply *ldlm_rep = NULL;
3058 * Initialize lhc->mlh_reg_lh either from a previously granted lock
3059 * (for the resend case) or a new lock. Below we will use it to
3060 * replace the original lock.
3062 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3063 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3064 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
3065 rc = mdt_object_lock(info, info->mti_object, lhc,
3066 MDS_INODELOCK_XATTR);
3071 grc = mdt_getxattr(info);
3073 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3075 if (mdt_info_req(info)->rq_repmsg != NULL)
3076 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3077 if (ldlm_rep == NULL)
3078 RETURN(err_serious(-EFAULT));
3080 ldlm_rep->lock_policy_res2 = grc;
3085 static int mdt_intent_getattr(enum mdt_it_code opcode,
3086 struct mdt_thread_info *info,
3087 struct ldlm_lock **lockp,
3090 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3092 struct ldlm_reply *ldlm_rep;
3093 struct mdt_body *reqbody;
3094 struct mdt_body *repbody;
3098 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3101 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3104 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
3105 repbody->mbo_eadatasize = 0;
3106 repbody->mbo_aclsize = 0;
3110 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
3112 case MDT_IT_GETATTR:
3113 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
3117 CERROR("Unsupported intent (%d)\n", opcode);
3118 GOTO(out_shrink, rc = -EINVAL);
3121 rc = mdt_init_ucred_intent_getattr(info, reqbody);
3123 GOTO(out_shrink, rc);
3125 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3126 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3128 /* Get lock from request for possible resent case. */
3129 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3131 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3132 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3134 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3135 ldlm_rep->lock_policy_res2 = 0;
3136 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3137 ldlm_rep->lock_policy_res2) {
3138 lhc->mlh_reg_lh.cookie = 0ull;
3139 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3142 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3145 mdt_exit_ucred(info);
3147 mdt_client_compatibility(info);
3148 rc2 = mdt_fix_reply(info);
3154 static int mdt_intent_layout(enum mdt_it_code opcode,
3155 struct mdt_thread_info *info,
3156 struct ldlm_lock **lockp,
3159 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_LAYOUT];
3160 struct layout_intent *layout;
3162 struct mdt_object *obj = NULL;
3166 if (opcode != MDT_IT_LAYOUT) {
3167 CERROR("%s: Unknown intent (%d)\n", mdt_obd_name(info->mti_mdt),
3172 fid = &info->mti_tmp_fid2;
3173 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
3175 /* Get lock from request for possible resent case. */
3176 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3178 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
3180 RETURN(PTR_ERR(obj));
3182 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
3183 /* get the length of lsm */
3184 rc = mdt_attr_get_eabuf_size(info, obj);
3186 mdt_object_put(info->mti_env, obj);
3190 if (rc > info->mti_mdt->mdt_max_mdsize)
3191 info->mti_mdt->mdt_max_mdsize = rc;
3194 mdt_object_put(info->mti_env, obj);
3196 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
3197 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER, rc);
3198 rc = req_capsule_server_pack(info->mti_pill);
3202 if (lustre_handle_is_used(&lhc->mlh_reg_lh))
3203 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3205 layout = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
3206 LASSERT(layout != NULL);
3207 if (layout->li_opc == LAYOUT_INTENT_ACCESS)
3208 /* return to normal/resent ldlm handling */
3211 CERROR("%s: Unsupported layout intent (%d)\n",
3212 mdt_obd_name(info->mti_mdt), layout->li_opc);
3216 static int mdt_intent_reint(enum mdt_it_code opcode,
3217 struct mdt_thread_info *info,
3218 struct ldlm_lock **lockp,
3221 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3222 struct ldlm_reply *rep = NULL;
3226 static const struct req_format *intent_fmts[REINT_MAX] = {
3227 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3228 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3233 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
3237 if (mdt_it_flavor[opcode].it_reint != opc) {
3238 CERROR("Reint code %ld doesn't match intent: %d\n",
3240 RETURN(err_serious(-EPROTO));
3243 /* Get lock from request for possible resent case. */
3244 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3246 rc = mdt_reint_internal(info, lhc, opc);
3248 /* Check whether the reply has been packed successfully. */
3249 if (mdt_info_req(info)->rq_repmsg != NULL)
3250 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3252 RETURN(err_serious(-EFAULT));
3254 /* MDC expects this in any case */
3256 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3258 /* the open lock or the lock for cross-ref object should be
3259 * returned to the client */
3260 if (lustre_handle_is_used(&lhc->mlh_reg_lh) &&
3261 (rc == 0 || rc == -MDT_EREMOTE_OPEN)) {
3262 rep->lock_policy_res2 = 0;
3263 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3267 rep->lock_policy_res2 = clear_serious(rc);
3269 if (rep->lock_policy_res2 == -ENOENT &&
3270 mdt_get_disposition(rep, DISP_LOOKUP_NEG))
3271 rep->lock_policy_res2 = 0;
3273 lhc->mlh_reg_lh.cookie = 0ull;
3274 if (rc == -ENOTCONN || rc == -ENODEV ||
3275 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3277 * If it is the disconnect error (ENODEV & ENOCONN), the error
3278 * will be returned by rq_status, and client at ptlrpc layer
3279 * will detect this, then disconnect, reconnect the import
3280 * immediately, instead of impacting the following the rpc.
3285 * For other cases, the error will be returned by intent, and client
3286 * will retrieve the result from intent.
3288 RETURN(ELDLM_LOCK_ABORTED);
3291 static int mdt_intent_code(long itcode)
3299 case IT_OPEN|IT_CREAT:
3306 rc = MDT_IT_READDIR;
3309 rc = MDT_IT_GETATTR;
3321 rc = MDT_IT_GETXATTR;
3326 case IT_QUOTA_DQACQ:
3331 CERROR("Unknown intent opcode: %ld\n", itcode);
3338 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
3339 struct ldlm_lock **lockp, __u64 flags)
3341 struct req_capsule *pill = info->mti_pill;
3342 struct ptlrpc_request *req = mdt_info_req(info);
3343 struct mdt_it_flavor *flv;
3348 opc = mdt_intent_code(itopc);
3352 if (opc == MDT_IT_QUOTA) {
3353 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
3356 RETURN(-EOPNOTSUPP);
3358 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
3359 /* pass the request to quota master */
3360 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
3361 mdt_info_req(info), lockp,
3366 flv = &mdt_it_flavor[opc];
3367 if (flv->it_fmt != NULL)
3368 req_capsule_extend(pill, flv->it_fmt);
3370 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
3374 if (flv->it_flags & MUTABOR &&
3375 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
3378 if (flv->it_act != NULL) {
3379 struct ldlm_reply *rep;
3381 /* execute policy */
3382 rc = flv->it_act(opc, info, lockp, flags);
3384 /* Check whether the reply has been packed successfully. */
3385 if (req->rq_repmsg != NULL) {
3386 rep = req_capsule_server_get(info->mti_pill,
3388 rep->lock_policy_res2 =
3389 ptlrpc_status_hton(rep->lock_policy_res2);
3396 static int mdt_intent_policy(struct ldlm_namespace *ns,
3397 struct ldlm_lock **lockp, void *req_cookie,
3398 ldlm_mode_t mode, __u64 flags, void *data)
3400 struct tgt_session_info *tsi;
3401 struct mdt_thread_info *info;
3402 struct ptlrpc_request *req = req_cookie;
3403 struct ldlm_intent *it;
3404 struct req_capsule *pill;
3409 LASSERT(req != NULL);
3411 tsi = tgt_ses_info(req->rq_svc_thread->t_env);
3413 info = tsi2mdt_info(tsi);
3414 LASSERT(info != NULL);
3415 pill = info->mti_pill;
3416 LASSERT(pill->rc_req == req);
3418 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
3419 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
3420 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
3422 rc = mdt_intent_opc(it->opc, info, lockp, flags);
3426 /* Lock without inodebits makes no sense and will oops
3427 * later in ldlm. Let's check it now to see if we have
3428 * ibits corrupted somewhere in mdt_intent_opc().
3429 * The case for client miss to set ibits has been
3430 * processed by others. */
3431 LASSERT(ergo(info->mti_dlm_req->lock_desc.l_resource.\
3432 lr_type == LDLM_IBITS,
3433 info->mti_dlm_req->lock_desc.\
3434 l_policy_data.l_inodebits.bits != 0));
3436 rc = err_serious(-EFAULT);
3438 /* No intent was provided */
3439 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
3440 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
3441 rc = req_capsule_server_pack(pill);
3443 rc = err_serious(rc);
3445 mdt_thread_info_fini(info);
3449 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
3451 struct seq_server_site *ss = mdt_seq_site(mdt);
3453 if (ss->ss_node_id == 0)
3456 if (ss->ss_client_seq != NULL) {
3457 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
3458 ss->ss_client_seq->lcs_exp = NULL;
3461 if (ss->ss_server_fld != NULL) {
3462 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
3463 ss->ss_server_fld->lsf_control_exp = NULL;
3467 static void mdt_seq_fini_cli(struct mdt_device *mdt)
3469 struct seq_server_site *ss = mdt_seq_site(mdt);
3474 if (ss->ss_server_seq != NULL)
3475 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
3478 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
3480 mdt_seq_fini_cli(mdt);
3481 mdt_deregister_seq_exp(mdt);
3483 return seq_site_fini(env, mdt_seq_site(mdt));
3487 * It will retrieve its FLDB entries from MDT0, and it only happens
3488 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
3489 * and it needs to refresh FLDB from the MDT0.
3491 static int mdt_register_lwp_callback(void *data)
3494 struct mdt_device *mdt = data;
3495 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
3499 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
3501 rc = lu_env_init(&env, LCT_MD_THREAD);
3503 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
3507 /* Allocate new sequence now to avoid creating local transaction
3508 * in the normal transaction process */
3509 rc = seq_server_check_and_alloc_super(&env,
3510 mdt_seq_site(mdt)->ss_server_seq);
3515 rc = fld_update_from_controller(&env, fld);
3517 CERROR("%s: cannot update controller: rc = %d\n",
3518 mdt_obd_name(mdt), rc);
3527 static int mdt_register_seq_exp(struct mdt_device *mdt)
3529 struct seq_server_site *ss = mdt_seq_site(mdt);
3530 char *lwp_name = NULL;
3533 if (ss->ss_node_id == 0)
3536 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
3537 if (lwp_name == NULL)
3538 GOTO(out_free, rc = -ENOMEM);
3540 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
3544 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
3549 rc = lustre_register_lwp_item(lwp_name,
3550 &ss->ss_server_fld->lsf_control_exp,
3551 mdt_register_lwp_callback, mdt);
3553 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
3554 ss->ss_client_seq->lcs_exp = NULL;
3558 if (lwp_name != NULL)
3559 OBD_FREE(lwp_name, MAX_OBD_NAME);
3565 * Init client sequence manager which is used by local MDS to talk to sequence
3566 * controller on remote node.
3568 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
3570 struct seq_server_site *ss = mdt_seq_site(mdt);
3575 /* check if this is adding the first MDC and controller is not yet
3577 OBD_ALLOC_PTR(ss->ss_client_seq);
3578 if (ss->ss_client_seq == NULL)
3581 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3582 if (prefix == NULL) {
3583 OBD_FREE_PTR(ss->ss_client_seq);
3584 ss->ss_client_seq = NULL;
3588 /* Note: seq_client_fini will be called in seq_site_fini */
3589 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
3590 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
3591 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
3593 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3595 OBD_FREE_PTR(ss->ss_client_seq);
3596 ss->ss_client_seq = NULL;
3600 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
3605 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
3607 struct seq_server_site *ss;
3611 ss = mdt_seq_site(mdt);
3612 /* init sequence controller server(MDT0) */
3613 if (ss->ss_node_id == 0) {
3614 OBD_ALLOC_PTR(ss->ss_control_seq);
3615 if (ss->ss_control_seq == NULL)
3618 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
3619 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
3622 GOTO(out_seq_fini, rc);
3625 /* Init normal sequence server */
3626 OBD_ALLOC_PTR(ss->ss_server_seq);
3627 if (ss->ss_server_seq == NULL)
3628 GOTO(out_seq_fini, rc = -ENOMEM);
3630 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
3631 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
3633 GOTO(out_seq_fini, rc);
3635 /* init seq client for seq server to talk to seq controller(MDT0) */
3636 rc = mdt_seq_init_cli(env, mdt);
3638 GOTO(out_seq_fini, rc);
3640 if (ss->ss_node_id != 0)
3641 /* register controller export through lwp */
3642 rc = mdt_register_seq_exp(mdt);
3647 mdt_seq_fini(env, mdt);
3655 static int mdt_fld_fini(const struct lu_env *env,
3656 struct mdt_device *m)
3658 struct seq_server_site *ss = mdt_seq_site(m);
3661 if (ss && ss->ss_server_fld) {
3662 fld_server_fini(env, ss->ss_server_fld);
3663 OBD_FREE_PTR(ss->ss_server_fld);
3664 ss->ss_server_fld = NULL;
3670 static int mdt_fld_init(const struct lu_env *env,
3672 struct mdt_device *m)
3674 struct seq_server_site *ss;
3678 ss = mdt_seq_site(m);
3680 OBD_ALLOC_PTR(ss->ss_server_fld);
3681 if (ss->ss_server_fld == NULL)
3682 RETURN(rc = -ENOMEM);
3684 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
3687 OBD_FREE_PTR(ss->ss_server_fld);
3688 ss->ss_server_fld = NULL;
3695 static void mdt_stack_pre_fini(const struct lu_env *env,
3696 struct mdt_device *m, struct lu_device *top)
3698 struct lustre_cfg_bufs *bufs;
3699 struct lustre_cfg *lcfg;
3700 struct mdt_thread_info *info;
3705 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3706 LASSERT(info != NULL);
3708 bufs = &info->mti_u.bufs;
3710 LASSERT(m->mdt_child_exp);
3711 LASSERT(m->mdt_child_exp->exp_obd);
3713 /* process cleanup, pass mdt obd name to get obd umount flags */
3714 /* XXX: this is needed because all layers are referenced by
3715 * objects (some of them are pinned by osd, for example *
3716 * the proper solution should be a model where object used
3717 * by osd only doesn't have mdt/mdd slices -bzzz */
3718 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
3719 lustre_cfg_bufs_set_string(bufs, 1, NULL);
3720 lcfg = lustre_cfg_new(LCFG_PRE_CLEANUP, bufs);
3724 top->ld_ops->ldo_process_config(env, top, lcfg);
3725 lustre_cfg_free(lcfg);
3729 static void mdt_stack_fini(const struct lu_env *env,
3730 struct mdt_device *m, struct lu_device *top)
3732 struct obd_device *obd = mdt2obd_dev(m);
3733 struct lustre_cfg_bufs *bufs;
3734 struct lustre_cfg *lcfg;
3735 struct mdt_thread_info *info;
3739 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3740 LASSERT(info != NULL);
3742 lu_dev_del_linkage(top->ld_site, top);
3744 lu_site_purge(env, top->ld_site, -1);
3746 bufs = &info->mti_u.bufs;
3747 /* process cleanup, pass mdt obd name to get obd umount flags */
3748 /* another purpose is to let all layers to release their objects */
3749 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
3754 lustre_cfg_bufs_set_string(bufs, 1, flags);
3755 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
3760 top->ld_ops->ldo_process_config(env, top, lcfg);
3761 lustre_cfg_free(lcfg);
3763 lu_site_purge(env, top->ld_site, -1);
3765 m->mdt_child = NULL;
3766 m->mdt_bottom = NULL;
3768 obd_disconnect(m->mdt_child_exp);
3769 m->mdt_child_exp = NULL;
3771 obd_disconnect(m->mdt_bottom_exp);
3772 m->mdt_child_exp = NULL;
3775 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
3776 const char *next, struct obd_export **exp)
3778 struct obd_connect_data *data = NULL;
3779 struct obd_device *obd;
3783 OBD_ALLOC_PTR(data);
3785 GOTO(out, rc = -ENOMEM);
3787 obd = class_name2obd(next);
3789 CERROR("%s: can't locate next device: %s\n",
3790 mdt_obd_name(m), next);
3791 GOTO(out, rc = -ENOTCONN);
3794 data->ocd_connect_flags = OBD_CONNECT_VERSION;
3795 data->ocd_version = LUSTRE_VERSION_CODE;
3797 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
3799 CERROR("%s: cannot connect to next dev %s (%d)\n",
3800 mdt_obd_name(m), next, rc);
3810 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
3811 struct lustre_cfg *cfg)
3813 char *dev = lustre_cfg_string(cfg, 0);
3814 int rc, name_size, uuid_size;
3815 char *name, *uuid, *p;
3816 struct lustre_cfg_bufs *bufs;
3817 struct lustre_cfg *lcfg;
3818 struct obd_device *obd;
3819 struct lustre_profile *lprof;
3820 struct lu_site *site;
3823 /* in 1.8 we had the only device in the stack - MDS.
3824 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
3825 * in 2.3 OSD is instantiated by obd_mount.c, so we need
3826 * to generate names and setup MDT, MDD. MDT will be using
3827 * generated name to connect to MDD. for MDD the next device
3828 * will be LOD with name taken from so called "profile" which
3829 * is generated by mount_option line
3831 * 1.8 MGS generates config. commands like this:
3832 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
3833 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
3834 * 2.0 MGS generates config. commands like this:
3835 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
3836 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
3837 * 3:lustre-MDT0000-mdtlov 4:f
3839 * we generate MDD name from MDT one, just replacing T with D
3841 * after all the preparations, the logical equivalent will be
3842 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
3843 * 3:lustre-MDT0000-mdtlov 4:f
3844 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
3845 * 3:lustre-MDD0000 4:f
3847 * notice we build the stack from down to top: MDD first, then MDT */
3849 name_size = MAX_OBD_NAME;
3850 uuid_size = MAX_OBD_NAME;
3852 OBD_ALLOC(name, name_size);
3853 OBD_ALLOC(uuid, uuid_size);
3854 if (name == NULL || uuid == NULL)
3855 GOTO(cleanup_mem, rc = -ENOMEM);
3857 OBD_ALLOC_PTR(bufs);
3859 GOTO(cleanup_mem, rc = -ENOMEM);
3862 p = strstr(name, "-MDT");
3864 GOTO(free_bufs, rc = -ENOMEM);
3867 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
3869 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
3870 if (lprof == NULL || lprof->lp_dt == NULL) {
3871 CERROR("can't find the profile: %s\n",
3872 lustre_cfg_string(cfg, 0));
3873 GOTO(free_bufs, rc = -EINVAL);
3876 lustre_cfg_bufs_reset(bufs, name);
3877 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
3878 lustre_cfg_bufs_set_string(bufs, 2, uuid);
3879 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
3881 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
3883 GOTO(free_bufs, rc = -ENOMEM);
3885 rc = class_attach(lcfg);
3887 GOTO(lcfg_cleanup, rc);
3889 obd = class_name2obd(name);
3891 CERROR("Can not find obd %s (%s in config)\n",
3892 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
3893 GOTO(lcfg_cleanup, rc = -EINVAL);
3896 lustre_cfg_free(lcfg);
3898 lustre_cfg_bufs_reset(bufs, name);
3899 lustre_cfg_bufs_set_string(bufs, 1, uuid);
3900 lustre_cfg_bufs_set_string(bufs, 2, dev);
3901 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
3903 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
3905 GOTO(class_detach, rc = -ENOMEM);
3907 rc = class_setup(obd, lcfg);
3909 GOTO(class_detach, rc);
3911 /* connect to MDD we just setup */
3912 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
3914 GOTO(class_detach, rc);
3916 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
3918 LASSERT(mdt_lu_site(mdt) == NULL);
3919 mdt->mdt_lu_dev.ld_site = site;
3920 site->ls_top_dev = &mdt->mdt_lu_dev;
3921 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
3923 /* now connect to bottom OSD */
3924 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
3925 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
3927 GOTO(class_detach, rc);
3929 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
3931 rc = lu_env_refill((struct lu_env *)env);
3933 CERROR("Failure to refill session: '%d'\n", rc);
3935 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
3940 class_detach(obd, lcfg);
3942 lustre_cfg_free(lcfg);
3947 OBD_FREE(name, name_size);
3949 OBD_FREE(uuid, uuid_size);
3953 /* setup quota master target on MDT0 */
3954 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
3955 struct lustre_cfg *cfg)
3957 struct obd_device *obd;
3958 char *dev = lustre_cfg_string(cfg, 0);
3959 char *qmtname, *uuid, *p;
3960 struct lustre_cfg_bufs *bufs;
3961 struct lustre_cfg *lcfg;
3962 struct lustre_profile *lprof;
3963 struct obd_connect_data *data;
3967 LASSERT(mdt->mdt_qmt_exp == NULL);
3968 LASSERT(mdt->mdt_qmt_dev == NULL);
3970 /* quota master is on MDT0 only for now */
3971 if (mdt->mdt_seq_site.ss_node_id != 0)
3974 /* MGS generates config commands which look as follows:
3975 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
3976 * 3:lustre-MDT0000-mdtlov 4:f
3978 * We generate the QMT name from the MDT one, just replacing MD with QM
3979 * after all the preparations, the logical equivalent will be:
3980 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
3981 * 3:lustre-MDT0000-osd 4:f */
3982 OBD_ALLOC(qmtname, MAX_OBD_NAME);
3983 OBD_ALLOC(uuid, UUID_MAX);
3984 OBD_ALLOC_PTR(bufs);
3985 OBD_ALLOC_PTR(data);
3986 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
3987 GOTO(cleanup_mem, rc = -ENOMEM);
3989 strcpy(qmtname, dev);
3990 p = strstr(qmtname, "-MDT");
3992 GOTO(cleanup_mem, rc = -ENOMEM);
3993 /* replace MD with QM */
3997 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
3999 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4000 if (lprof == NULL || lprof->lp_dt == NULL) {
4001 CERROR("can't find profile for %s\n",
4002 lustre_cfg_string(cfg, 0));
4003 GOTO(cleanup_mem, rc = -EINVAL);
4006 lustre_cfg_bufs_reset(bufs, qmtname);
4007 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
4008 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4009 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4011 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
4013 GOTO(cleanup_mem, rc = -ENOMEM);
4015 rc = class_attach(lcfg);
4017 GOTO(lcfg_cleanup, rc);
4019 obd = class_name2obd(qmtname);
4021 CERROR("Can not find obd %s (%s in config)\n", qmtname,
4022 lustre_cfg_string(cfg, 0));
4023 GOTO(lcfg_cleanup, rc = -EINVAL);
4026 lustre_cfg_free(lcfg);
4028 lustre_cfg_bufs_reset(bufs, qmtname);
4029 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4030 lustre_cfg_bufs_set_string(bufs, 2, dev);
4032 /* for quota, the next device should be the OSD device */
4033 lustre_cfg_bufs_set_string(bufs, 3,
4034 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
4036 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4038 GOTO(class_detach, rc = -ENOMEM);
4040 rc = class_setup(obd, lcfg);
4042 GOTO(class_detach, rc);
4044 mdt->mdt_qmt_dev = obd->obd_lu_dev;
4046 /* configure local quota objects */
4047 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
4051 GOTO(class_cleanup, rc);
4053 /* connect to quota master target */
4054 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4055 data->ocd_version = LUSTRE_VERSION_CODE;
4056 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
4059 CERROR("cannot connect to quota master device %s (%d)\n",
4061 GOTO(class_cleanup, rc);
4067 class_manual_cleanup(obd);
4068 mdt->mdt_qmt_dev = NULL;
4072 class_detach(obd, lcfg);
4074 lustre_cfg_free(lcfg);
4079 OBD_FREE(qmtname, MAX_OBD_NAME);
4081 OBD_FREE(uuid, UUID_MAX);
4087 /* Shutdown quota master target associated with mdt */
4088 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
4092 if (mdt->mdt_qmt_exp == NULL)
4094 LASSERT(mdt->mdt_qmt_dev != NULL);
4096 /* the qmt automatically shuts down when the mdt disconnects */
4097 obd_disconnect(mdt->mdt_qmt_exp);
4098 mdt->mdt_qmt_exp = NULL;
4099 mdt->mdt_qmt_dev = NULL;
4103 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
4104 * for now. This will be removed along with converting rest of MDT code
4105 * to use tgt_session_info */
4106 static int mdt_tgt_getxattr(struct tgt_session_info *tsi)
4108 struct mdt_thread_info *info = tsi2mdt_info(tsi);
4111 rc = mdt_getxattr(info);
4113 mdt_thread_info_fini(info);
4117 static struct tgt_handler mdt_tgt_handlers[] = {
4118 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4119 0, MDS_CONNECT, mdt_tgt_connect,
4120 &RQF_CONNECT, LUSTRE_OBD_VERSION),
4121 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4122 0, MDS_DISCONNECT, tgt_disconnect,
4123 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
4124 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4125 HABEO_REFERO, MDS_SET_INFO, mdt_set_info,
4126 &RQF_OBD_SET_INFO, LUSTRE_MDS_VERSION),
4127 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
4128 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_GETSTATUS, mdt_getstatus),
4129 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETATTR, mdt_getattr),
4130 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_GETATTR_NAME,
4132 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETXATTR, mdt_tgt_getxattr),
4133 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_STATFS, mdt_statfs),
4134 TGT_MDT_HDL(0 | MUTABOR, MDS_REINT, mdt_reint),
4135 TGT_MDT_HDL(HABEO_CORPUS, MDS_CLOSE, mdt_close),
4136 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_READPAGE, mdt_readpage),
4137 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_SYNC, mdt_sync),
4138 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
4139 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_PROGRESS,
4141 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_REGISTER,
4142 mdt_hsm_ct_register),
4143 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_UNREGISTER,
4144 mdt_hsm_ct_unregister),
4145 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_STATE_GET,
4147 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_STATE_SET,
4149 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_ACTION, mdt_hsm_action),
4150 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_REQUEST,
4152 TGT_MDT_HDL(HABEO_CLAVIS | HABEO_CORPUS | HABEO_REFERO | MUTABOR,
4157 static struct tgt_handler mdt_sec_ctx_ops[] = {
4158 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
4159 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
4160 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
4163 static struct tgt_handler mdt_quota_ops[] = {
4164 TGT_QUOTA_HDL(HABEO_REFERO, QUOTA_DQACQ, mdt_quota_dqacq),
4167 static struct tgt_opc_slice mdt_common_slice[] = {
4169 .tos_opc_start = MDS_FIRST_OPC,
4170 .tos_opc_end = MDS_LAST_OPC,
4171 .tos_hs = mdt_tgt_handlers
4174 .tos_opc_start = OBD_FIRST_OPC,
4175 .tos_opc_end = OBD_LAST_OPC,
4176 .tos_hs = tgt_obd_handlers
4179 .tos_opc_start = LDLM_FIRST_OPC,
4180 .tos_opc_end = LDLM_LAST_OPC,
4181 .tos_hs = tgt_dlm_handlers
4184 .tos_opc_start = SEC_FIRST_OPC,
4185 .tos_opc_end = SEC_LAST_OPC,
4186 .tos_hs = mdt_sec_ctx_ops
4189 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
4190 .tos_opc_end = OUT_UPDATE_LAST_OPC,
4191 .tos_hs = tgt_out_handlers
4194 .tos_opc_start = FLD_FIRST_OPC,
4195 .tos_opc_end = FLD_LAST_OPC,
4196 .tos_hs = fld_handlers
4199 .tos_opc_start = SEQ_FIRST_OPC,
4200 .tos_opc_end = SEQ_LAST_OPC,
4201 .tos_hs = seq_handlers
4204 .tos_opc_start = QUOTA_DQACQ,
4205 .tos_opc_end = QUOTA_LAST_OPC,
4206 .tos_hs = mdt_quota_ops
4209 .tos_opc_start = LLOG_FIRST_OPC,
4210 .tos_opc_end = LLOG_LAST_OPC,
4211 .tos_hs = tgt_llog_handlers
4214 .tos_opc_start = LFSCK_FIRST_OPC,
4215 .tos_opc_end = LFSCK_LAST_OPC,
4216 .tos_hs = tgt_lfsck_handlers
4224 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4226 struct md_device *next = m->mdt_child;
4227 struct lu_device *d = &m->mdt_lu_dev;
4228 struct obd_device *obd = mdt2obd_dev(m);
4229 struct lfsck_stop stop;
4232 stop.ls_status = LS_PAUSED;
4234 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
4236 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
4237 target_recovery_fini(obd);
4238 ping_evictor_stop();
4240 if (m->mdt_opts.mo_coordinator)
4241 mdt_hsm_cdt_stop(m);
4243 mdt_hsm_cdt_fini(m);
4245 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
4246 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4248 if (m->mdt_namespace != NULL)
4249 ldlm_namespace_free_prior(m->mdt_namespace, NULL,
4250 d->ld_obd->obd_force);
4252 obd_exports_barrier(obd);
4253 obd_zombie_barrier();
4257 tgt_fini(env, &m->mdt_lut);
4258 mdt_fs_cleanup(env, m);
4259 upcall_cache_cleanup(m->mdt_identity_cache);
4260 m->mdt_identity_cache = NULL;
4262 if (m->mdt_namespace != NULL) {
4263 ldlm_namespace_free_post(m->mdt_namespace);
4264 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
4267 mdt_quota_fini(env, m);
4269 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
4271 mdt_seq_fini(env, m);
4272 mdt_fld_fini(env, m);
4277 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4279 LASSERT(atomic_read(&d->ld_ref) == 0);
4281 server_put_mount(mdt_obd_name(m), true);
4286 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4288 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4289 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4291 struct mdt_thread_info *info;
4292 struct obd_device *obd;
4293 const char *dev = lustre_cfg_string(cfg, 0);
4294 const char *num = lustre_cfg_string(cfg, 2);
4295 struct lustre_mount_info *lmi = NULL;
4296 struct lustre_sb_info *lsi;
4298 struct seq_server_site *ss_site;
4299 const char *identity_upcall = "NONE";
4300 struct md_device *next;
4306 lu_device_init(&m->mdt_lu_dev, ldt);
4308 * Environment (env) might be missing mdt_thread_key values at that
4309 * point, if device is allocated when mdt_thread_key is in QUIESCENT
4312 * Usually device allocation path doesn't use module key values, but
4313 * mdt has to do a lot of work here, so allocate key value.
4315 rc = lu_env_refill((struct lu_env *)env);
4319 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4320 LASSERT(info != NULL);
4322 obd = class_name2obd(dev);
4323 LASSERT(obd != NULL);
4325 m->mdt_max_mdsize = MAX_MD_SIZE; /* 4 stripes */
4327 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
4329 /* default is coordinator off, it is started through conf_param
4331 m->mdt_opts.mo_coordinator = 0;
4333 lmi = server_get_mount(dev);
4335 CERROR("Cannot get mount info for %s!\n", dev);
4338 lsi = s2lsi(lmi->lmi_sb);
4339 /* CMD is supported only in IAM mode */
4341 node_id = simple_strtol(num, NULL, 10);
4342 obd->u.obt.obt_magic = OBT_MAGIC;
4345 m->mdt_squash.rsi_uid = 0;
4346 m->mdt_squash.rsi_gid = 0;
4347 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
4348 init_rwsem(&m->mdt_squash.rsi_sem);
4349 spin_lock_init(&m->mdt_osfs_lock);
4350 m->mdt_osfs_age = cfs_time_shift_64(-1000);
4351 m->mdt_enable_remote_dir = 0;
4352 m->mdt_enable_remote_dir_gid = 0;
4354 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
4355 m->mdt_lu_dev.ld_obd = obd;
4356 /* Set this lu_device to obd for error handling purposes. */
4357 obd->obd_lu_dev = &m->mdt_lu_dev;
4359 /* init the stack */
4360 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
4362 CERROR("%s: Can't init device stack, rc %d\n",
4363 mdt_obd_name(m), rc);
4368 ss_site = mdt_seq_site(m);
4369 s->ld_seq_site = ss_site;
4372 /* set server index */
4373 ss_site->ss_node_id = node_id;
4375 /* failover is the default
4376 * FIXME: we do not failout mds0/mgs, which may cause some problems.
4377 * assumed whose ss_node_id == 0 XXX
4379 obd->obd_replayable = 1;
4380 /* No connection accepted until configurations will finish */
4381 obd->obd_no_conn = 1;
4383 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
4384 char *str = lustre_cfg_string(cfg, 4);
4385 if (strchr(str, 'n')) {
4386 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
4387 obd->obd_replayable = 0;
4391 rc = mdt_fld_init(env, mdt_obd_name(m), m);
4393 GOTO(err_fini_stack, rc);
4395 rc = mdt_seq_init(env, m);
4397 GOTO(err_fini_fld, rc);
4399 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
4400 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
4401 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
4402 LDLM_NAMESPACE_SERVER,
4403 LDLM_NAMESPACE_GREEDY,
4405 if (m->mdt_namespace == NULL)
4406 GOTO(err_fini_seq, rc = -ENOMEM);
4408 m->mdt_namespace->ns_lvbp = m;
4409 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
4411 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
4412 /* set obd_namespace for compatibility with old code */
4413 obd->obd_namespace = m->mdt_namespace;
4415 rc = mdt_hsm_cdt_init(m);
4417 CERROR("%s: error initializing coordinator, rc %d\n",
4418 mdt_obd_name(m), rc);
4419 GOTO(err_free_ns, rc);
4422 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
4423 OBD_FAIL_MDS_ALL_REQUEST_NET,
4424 OBD_FAIL_MDS_ALL_REPLY_NET);
4426 GOTO(err_free_hsm, rc);
4428 rc = mdt_fs_setup(env, m, obd, lsi);
4432 tgt_adapt_sptlrpc_conf(&m->mdt_lut, 1);
4434 next = m->mdt_child;
4435 rc = next->md_ops->mdo_iocontrol(env, next, OBD_IOC_GET_MNTOPT, 0,
4438 GOTO(err_fs_cleanup, rc);
4440 if (mntopts & MNTOPT_USERXATTR)
4441 m->mdt_opts.mo_user_xattr = 1;
4443 m->mdt_opts.mo_user_xattr = 0;
4445 rc = next->md_ops->mdo_maxeasize_get(env, next, &m->mdt_max_ea_size);
4447 GOTO(err_fs_cleanup, rc);
4449 if (mntopts & MNTOPT_ACL)
4450 m->mdt_opts.mo_acl = 1;
4452 m->mdt_opts.mo_acl = 0;
4454 /* XXX: to support suppgid for ACL, we enable identity_upcall
4455 * by default, otherwise, maybe got unexpected -EACCESS. */
4456 if (m->mdt_opts.mo_acl)
4457 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
4459 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
4461 &mdt_identity_upcall_cache_ops);
4462 if (IS_ERR(m->mdt_identity_cache)) {
4463 rc = PTR_ERR(m->mdt_identity_cache);
4464 m->mdt_identity_cache = NULL;
4465 GOTO(err_fs_cleanup, rc);
4468 rc = mdt_procfs_init(m, dev);
4470 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
4471 GOTO(err_recovery, rc);
4474 rc = mdt_quota_init(env, m, cfg);
4476 GOTO(err_procfs, rc);
4478 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
4479 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
4480 "mdt_ldlm_client", m->mdt_ldlm_client);
4482 ping_evictor_start();
4484 /* recovery will be started upon mdt_prepare()
4485 * when the whole stack is complete and ready
4486 * to serve the requests */
4488 /* Reduce the initial timeout on an MDS because it doesn't need such
4489 * a long timeout as an OST does. Adaptive timeouts will adjust this
4490 * value appropriately. */
4491 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
4492 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
4498 target_recovery_fini(obd);
4499 upcall_cache_cleanup(m->mdt_identity_cache);
4500 m->mdt_identity_cache = NULL;
4502 mdt_fs_cleanup(env, m);
4504 tgt_fini(env, &m->mdt_lut);
4506 mdt_hsm_cdt_fini(m);
4508 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
4509 obd->obd_namespace = m->mdt_namespace = NULL;
4511 mdt_seq_fini(env, m);
4513 mdt_fld_fini(env, m);
4515 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4518 server_put_mount(dev, true);
4522 /* For interoperability, the left element is old parameter, the right one
4523 * is the new version of the parameter, if some parameter is deprecated,
4524 * the new version should be set as NULL. */
4525 static struct cfg_interop_param mdt_interop_param[] = {
4526 { "mdt.group_upcall", NULL },
4527 { "mdt.quota_type", NULL },
4528 { "mdd.quota_type", NULL },
4529 { "mdt.rootsquash", "mdt.root_squash" },
4530 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
4534 /* used by MGS to process specific configurations */
4535 static int mdt_process_config(const struct lu_env *env,
4536 struct lu_device *d, struct lustre_cfg *cfg)
4538 struct mdt_device *m = mdt_dev(d);
4539 struct md_device *md_next = m->mdt_child;
4540 struct lu_device *next = md2lu_dev(md_next);
4544 switch (cfg->lcfg_command) {
4546 struct obd_device *obd = d->ld_obd;
4548 /* For interoperability */
4549 struct cfg_interop_param *ptr = NULL;
4550 struct lustre_cfg *old_cfg = NULL;
4553 param = lustre_cfg_string(cfg, 1);
4554 if (param == NULL) {
4555 CERROR("param is empty\n");
4560 ptr = class_find_old_param(param, mdt_interop_param);
4562 if (ptr->new_param == NULL) {
4564 CWARN("For interoperability, skip this %s."
4565 " It is obsolete.\n", ptr->old_param);
4569 CWARN("Found old param %s, changed it to %s.\n",
4570 ptr->old_param, ptr->new_param);
4573 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
4580 rc = class_process_proc_param(PARAM_MDT, obd->obd_vars,
4582 if (rc > 0 || rc == -ENOSYS) {
4583 /* is it an HSM var ? */
4584 rc = class_process_proc_param(PARAM_HSM,
4585 hsm_cdt_get_proc_vars(),
4587 if (rc > 0 || rc == -ENOSYS)
4588 /* we don't understand; pass it on */
4589 rc = next->ld_ops->ldo_process_config(env, next,
4593 if (old_cfg != NULL)
4594 lustre_cfg_free(cfg);
4599 /* others are passed further */
4600 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4606 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
4607 const struct lu_object_header *hdr,
4608 struct lu_device *d)
4610 struct mdt_object *mo;
4614 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
4616 struct lu_object *o;
4617 struct lu_object_header *h;
4620 h = &mo->mot_header;
4621 lu_object_header_init(h);
4622 lu_object_init(o, h, d);
4623 lu_object_add_top(h, o);
4624 o->lo_ops = &mdt_obj_ops;
4625 spin_lock_init(&mo->mot_write_lock);
4626 mutex_init(&mo->mot_lov_mutex);
4627 init_rwsem(&mo->mot_open_sem);
4633 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
4634 const struct lu_object_conf *unused)
4636 struct mdt_device *d = mdt_dev(o->lo_dev);
4637 struct lu_device *under;
4638 struct lu_object *below;
4642 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
4643 PFID(lu_object_fid(o)));
4645 under = &d->mdt_child->md_lu_dev;
4646 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
4647 if (below != NULL) {
4648 lu_object_add(o, below);
4655 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
4657 struct mdt_object *mo = mdt_obj(o);
4658 struct lu_object_header *h;
4662 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
4663 PFID(lu_object_fid(o)));
4665 LASSERT(atomic_read(&mo->mot_open_count) == 0);
4666 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
4669 lu_object_header_fini(h);
4670 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
4675 static int mdt_object_print(const struct lu_env *env, void *cookie,
4676 lu_printer_t p, const struct lu_object *o)
4678 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
4680 return (*p)(env, cookie,
4681 LUSTRE_MDT_NAME"-object@%p(flags=%d, writecount=%d)",
4682 mdto, mdto->mot_flags, mdto->mot_write_count);
4685 static int mdt_prepare(const struct lu_env *env,
4686 struct lu_device *pdev,
4687 struct lu_device *cdev)
4689 struct mdt_device *mdt = mdt_dev(cdev);
4690 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
4691 struct obd_device *obd = cdev->ld_obd;
4698 rc = next->ld_ops->ldo_prepare(env, cdev, next);
4702 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
4706 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
4710 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
4711 /* The LFSCK instance is registered just now, so it must be there when
4712 * register the namespace to such instance. */
4713 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
4715 if (mdt->mdt_seq_site.ss_node_id == 0) {
4716 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
4717 &mdt->mdt_md_root_fid);
4722 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
4724 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
4725 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
4726 LASSERT(obd->obd_no_conn);
4727 spin_lock(&obd->obd_dev_lock);
4728 obd->obd_no_conn = 0;
4729 spin_unlock(&obd->obd_dev_lock);
4731 if (obd->obd_recovering == 0)
4732 mdt_postrecov(env, mdt);
4737 const struct lu_device_operations mdt_lu_ops = {
4738 .ldo_object_alloc = mdt_object_alloc,
4739 .ldo_process_config = mdt_process_config,
4740 .ldo_prepare = mdt_prepare,
4743 static const struct lu_object_operations mdt_obj_ops = {
4744 .loo_object_init = mdt_object_init,
4745 .loo_object_free = mdt_object_free,
4746 .loo_object_print = mdt_object_print
4749 static int mdt_obd_set_info_async(const struct lu_env *env,
4750 struct obd_export *exp,
4751 __u32 keylen, void *key,
4752 __u32 vallen, void *val,
4753 struct ptlrpc_request_set *set)
4759 if (KEY_IS(KEY_SPTLRPC_CONF)) {
4760 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp), 0);
4768 * Match client and server connection feature flags.
4770 * Compute the compatibility flags for a connection request based on
4771 * features mutually supported by client and server.
4773 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
4774 * must not be updated here, otherwise a partially initialized value may
4775 * be exposed. After the connection request is successfully processed,
4776 * the top-level MDT connect request handler atomically updates the export
4777 * connect flags from the obd_connect_data::ocd_connect_flags field of the
4778 * reply. \see mdt_connect().
4780 * \param exp the obd_export associated with this client/target pair
4781 * \param mdt the target device for the connection
4782 * \param data stores data for this connect request
4785 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
4786 * \retval -EBADE client and server feature requirements are incompatible
4788 static int mdt_connect_internal(struct obd_export *exp,
4789 struct mdt_device *mdt,
4790 struct obd_connect_data *data)
4792 LASSERT(data != NULL);
4794 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
4795 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
4797 if (!(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
4798 !(data->ocd_connect_flags & OBD_CONNECT_IBITS)) {
4799 CWARN("%s: client %s does not support ibits lock, either "
4800 "very old or an invalid client: flags "LPX64"\n",
4801 mdt_obd_name(mdt), exp->exp_client_uuid.uuid,
4802 data->ocd_connect_flags);
4806 if (!mdt->mdt_opts.mo_acl)
4807 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
4809 if (!mdt->mdt_opts.mo_user_xattr)
4810 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
4812 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
4813 data->ocd_brw_size = min(data->ocd_brw_size,
4814 (__u32)MD_MAX_BRW_SIZE);
4815 if (data->ocd_brw_size == 0) {
4816 CERROR("%s: cli %s/%p ocd_connect_flags: "LPX64
4817 " ocd_version: %x ocd_grant: %d "
4818 "ocd_index: %u ocd_brw_size is "
4819 "unexpectedly zero, network data "
4820 "corruption? Refusing connection of this"
4823 exp->exp_client_uuid.uuid,
4824 exp, data->ocd_connect_flags, data->ocd_version,
4825 data->ocd_grant, data->ocd_index);
4830 /* NB: Disregard the rule against updating
4831 * exp_connect_data.ocd_connect_flags in this case, since
4832 * tgt_client_new() needs to know if this is a lightweight
4833 * connection, and it is safe to expose this flag before
4834 * connection processing completes. */
4835 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
4836 spin_lock(&exp->exp_lock);
4837 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
4838 spin_unlock(&exp->exp_lock);
4841 data->ocd_version = LUSTRE_VERSION_CODE;
4843 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
4844 CWARN("%s: MDS requires FID support, but client not\n",
4849 if (OCD_HAS_FLAG(data, PINGLESS)) {
4850 if (ptlrpc_pinger_suppress_pings()) {
4851 spin_lock(&exp->exp_obd->obd_dev_lock);
4852 list_del_init(&exp->exp_obd_chain_timed);
4853 spin_unlock(&exp->exp_obd->obd_dev_lock);
4855 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
4859 data->ocd_max_easize = mdt->mdt_max_ea_size;
4861 /* NB: Disregard the rule against updating
4862 * exp_connect_data.ocd_connect_flags in this case, since
4863 * tgt_client_new() needs to know if this is client supports
4864 * multiple modify RPCs, and it is safe to expose this flag before
4865 * connection processing completes. */
4866 if (data->ocd_connect_flags & OBD_CONNECT_MULTIMODRPCS) {
4867 data->ocd_maxmodrpcs = max_mod_rpcs_per_client;
4868 spin_lock(&exp->exp_lock);
4869 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_MULTIMODRPCS;
4870 spin_unlock(&exp->exp_lock);
4876 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
4877 struct mdt_thread_info *info,
4878 struct mdt_file_data *mfd)
4880 struct lu_context ses;
4884 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
4889 lu_context_enter(&ses);
4891 mdt_ucred(info)->uc_valid = UCRED_OLD;
4892 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
4894 lu_context_exit(&ses);
4895 lu_context_fini(&ses);
4901 static int mdt_export_cleanup(struct obd_export *exp)
4903 struct list_head closing_list;
4904 struct mdt_export_data *med = &exp->exp_mdt_data;
4905 struct obd_device *obd = exp->exp_obd;
4906 struct mdt_device *mdt;
4907 struct mdt_thread_info *info;
4909 struct mdt_file_data *mfd, *n;
4913 INIT_LIST_HEAD(&closing_list);
4914 spin_lock(&med->med_open_lock);
4915 while (!list_empty(&med->med_open_head)) {
4916 struct list_head *tmp = med->med_open_head.next;
4917 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
4919 /* Remove mfd handle so it can't be found again.
4920 * We are consuming the mfd_list reference here. */
4921 class_handle_unhash(&mfd->mfd_handle);
4922 list_move_tail(&mfd->mfd_list, &closing_list);
4924 spin_unlock(&med->med_open_lock);
4925 mdt = mdt_dev(obd->obd_lu_dev);
4926 LASSERT(mdt != NULL);
4928 rc = lu_env_init(&env, LCT_MD_THREAD);
4932 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
4933 LASSERT(info != NULL);
4934 memset(info, 0, sizeof *info);
4935 info->mti_env = &env;
4936 info->mti_mdt = mdt;
4937 info->mti_exp = exp;
4939 if (!list_empty(&closing_list)) {
4940 struct md_attr *ma = &info->mti_attr;
4942 /* Close any open files (which may also cause orphan
4944 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
4945 list_del_init(&mfd->mfd_list);
4946 ma->ma_need = ma->ma_valid = 0;
4948 /* This file is being closed due to an eviction, it
4949 * could have been modified and now dirty regarding to
4950 * HSM archive, check this!
4951 * The logic here is to mark a file dirty if there's a
4952 * chance it was dirtied before the client was evicted,
4953 * so that we don't have to wait for a release attempt
4954 * before finding out the file was actually dirty and
4955 * fail the release. Aggressively marking it dirty here
4956 * will cause the policy engine to attempt to
4957 * re-archive it; when rearchiving, we can compare the
4958 * current version to the HSM data_version and make the
4959 * archive request into a noop if it's not actually
4962 if (mfd->mfd_mode & FMODE_WRITE)
4963 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
4965 /* Don't unlink orphan on failover umount, LU-184 */
4966 if (exp->exp_flags & OBD_OPT_FAILOVER) {
4967 ma->ma_valid = MA_FLAGS;
4968 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
4970 mdt_mfd_close(info, mfd);
4973 info->mti_mdt = NULL;
4974 /* cleanup client slot early */
4975 /* Do not erase record for recoverable client. */
4976 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
4977 tgt_client_del(&env, exp);
4983 static int mdt_obd_disconnect(struct obd_export *exp)
4989 class_export_get(exp);
4991 nodemap_del_member(exp);
4992 rc = server_disconnect_export(exp);
4994 CDEBUG(D_IOCTL, "server disconnect error: rc = %d\n", rc);
4996 rc = mdt_export_cleanup(exp);
4997 class_export_put(exp);
5001 /* mds_connect copy */
5002 static int mdt_obd_connect(const struct lu_env *env,
5003 struct obd_export **exp, struct obd_device *obd,
5004 struct obd_uuid *cluuid,
5005 struct obd_connect_data *data,
5008 struct obd_export *lexp;
5009 struct lustre_handle conn = { 0 };
5010 struct mdt_device *mdt;
5012 lnet_nid_t *client_nid = localdata;
5015 LASSERT(env != NULL);
5016 if (!exp || !obd || !cluuid)
5019 mdt = mdt_dev(obd->obd_lu_dev);
5022 * first, check whether the stack is ready to handle requests
5023 * XXX: probably not very appropriate method is used now
5024 * at some point we should find a better one
5026 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) && data != NULL &&
5027 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) &&
5028 !(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
5029 rc = obd_get_info(env, mdt->mdt_child_exp,
5030 sizeof(KEY_OSP_CONNECTED),
5031 KEY_OSP_CONNECTED, NULL, NULL);
5034 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
5037 rc = class_connect(&conn, obd, cluuid);
5041 lexp = class_conn2export(&conn);
5042 LASSERT(lexp != NULL);
5044 rc = mdt_connect_internal(lexp, mdt, data);
5046 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
5049 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5050 rc = tgt_client_new(env, lexp);
5052 rc = nodemap_add_member(*client_nid, lexp);
5053 if (rc != 0 && rc != -EEXIST)
5056 mdt_export_stats_init(obd, lexp, localdata);
5061 class_disconnect(lexp);
5070 static int mdt_obd_reconnect(const struct lu_env *env,
5071 struct obd_export *exp, struct obd_device *obd,
5072 struct obd_uuid *cluuid,
5073 struct obd_connect_data *data,
5076 lnet_nid_t *client_nid = localdata;
5080 if (exp == NULL || obd == NULL || cluuid == NULL)
5083 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
5085 rc = nodemap_add_member(*client_nid, exp);
5086 if (rc == 0 || rc == -EEXIST)
5087 mdt_export_stats_init(obd, exp, localdata);
5093 /* FIXME: Can we avoid using these two interfaces? */
5094 static int mdt_init_export(struct obd_export *exp)
5096 struct mdt_export_data *med = &exp->exp_mdt_data;
5100 INIT_LIST_HEAD(&med->med_open_head);
5101 spin_lock_init(&med->med_open_lock);
5102 mutex_init(&med->med_idmap_mutex);
5103 med->med_idmap = NULL;
5104 spin_lock(&exp->exp_lock);
5105 exp->exp_connecting = 1;
5106 spin_unlock(&exp->exp_lock);
5108 /* self-export doesn't need client data and ldlm initialization */
5109 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5110 &exp->exp_client_uuid)))
5113 rc = tgt_client_alloc(exp);
5117 rc = ldlm_init_export(exp);
5124 tgt_client_free(exp);
5126 CERROR("%s: Failed to initialize export: rc = %d\n",
5127 exp->exp_obd->obd_name, rc);
5131 static int mdt_destroy_export(struct obd_export *exp)
5135 if (exp_connect_rmtclient(exp))
5136 mdt_cleanup_idmap(&exp->exp_mdt_data);
5138 target_destroy_export(exp);
5139 /* destroy can be called from failed obd_setup, so
5140 * checking uuid is safer than obd_self_export */
5141 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5142 &exp->exp_client_uuid)))
5145 ldlm_destroy_export(exp);
5146 tgt_client_free(exp);
5148 LASSERT(list_empty(&exp->exp_outstanding_replies));
5149 LASSERT(list_empty(&exp->exp_mdt_data.med_open_head));
5154 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
5155 struct linkea_data *ldata)
5159 LASSERT(ldata->ld_buf->lb_buf != NULL);
5161 if (!mdt_object_exists(mdt_obj))
5164 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5165 ldata->ld_buf, XATTR_NAME_LINK);
5166 if (rc == -ERANGE) {
5167 /* Buf was too small, figure out what we need. */
5168 lu_buf_free(ldata->ld_buf);
5169 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5170 ldata->ld_buf, XATTR_NAME_LINK);
5173 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
5174 if (ldata->ld_buf->lb_buf == NULL)
5176 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5177 ldata->ld_buf, XATTR_NAME_LINK);
5182 return linkea_init(ldata);
5186 * Given an MDT object, try to look up the full path to the object.
5187 * Part of the MDT layer implementation of lfs fid2path.
5189 * \param[in] info Per-thread common data shared by MDT level handlers.
5190 * \param[in] obj Object to do path lookup of
5191 * \param[in,out] fp User-provided struct to store path information
5193 * \retval 0 Lookup successful, path information stored in fp
5194 * \retval -EAGAIN Lookup failed, usually because object is being moved
5195 * \retval negative errno if there was a problem
5197 static int mdt_path_current(struct mdt_thread_info *info,
5198 struct mdt_object *obj,
5199 struct getinfo_fid2path *fp)
5201 struct mdt_device *mdt = info->mti_mdt;
5202 struct mdt_object *mdt_obj;
5203 struct link_ea_header *leh;
5204 struct link_ea_entry *lee;
5205 struct lu_name *tmpname = &info->mti_name;
5206 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
5207 struct lu_buf *buf = &info->mti_big_buf;
5210 struct linkea_data ldata = { NULL };
5215 /* temp buffer for path element, the buffer will be finally freed
5216 * in mdt_thread_info_fini */
5217 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
5218 if (buf->lb_buf == NULL)
5222 ptr = fp->gf_path + fp->gf_pathlen - 1;
5225 *tmpfid = fp->gf_fid = *mdt_object_fid(obj);
5227 /* root FID only exists on MDT0, and fid2path should also ends at MDT0,
5228 * so checking root_fid can only happen on MDT0. */
5229 while (!lu_fid_eq(&mdt->mdt_md_root_fid, &fp->gf_fid)) {
5230 struct lu_buf lmv_buf;
5232 mdt_obj = mdt_object_find(info->mti_env, mdt, tmpfid);
5233 if (IS_ERR(mdt_obj))
5234 GOTO(out, rc = PTR_ERR(mdt_obj));
5236 if (!mdt_object_exists(mdt_obj)) {
5237 mdt_object_put(info->mti_env, mdt_obj);
5238 GOTO(out, rc = -ENOENT);
5241 if (mdt_object_remote(mdt_obj)) {
5242 mdt_object_put(info->mti_env, mdt_obj);
5243 GOTO(remote_out, rc = -EREMOTE);
5246 rc = mdt_links_read(info, mdt_obj, &ldata);
5248 mdt_object_put(info->mti_env, mdt_obj);
5253 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
5254 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
5255 /* If set, use link #linkno for path lookup, otherwise use
5256 link #0. Only do this for the final path element. */
5257 if (first && fp->gf_linkno < leh->leh_reccount) {
5259 for (count = 0; count < fp->gf_linkno; count++) {
5260 lee = (struct link_ea_entry *)
5261 ((char *)lee + reclen);
5262 linkea_entry_unpack(lee, &reclen, tmpname,
5265 if (fp->gf_linkno < leh->leh_reccount - 1)
5266 /* indicate to user there are more links */
5270 lmv_buf.lb_buf = info->mti_xattr_buf;
5271 lmv_buf.lb_len = sizeof(info->mti_xattr_buf);
5272 /* Check if it is slave stripes */
5273 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5274 &lmv_buf, XATTR_NAME_LMV);
5275 mdt_object_put(info->mti_env, mdt_obj);
5277 union lmv_mds_md *lmm = lmv_buf.lb_buf;
5279 /* For slave stripes, get its master */
5280 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE) {
5281 fp->gf_fid = *tmpfid;
5284 } else if (rc < 0 && rc != -ENODATA) {
5290 /* Pack the name in the end of the buffer */
5291 ptr -= tmpname->ln_namelen;
5292 if (ptr - 1 <= fp->gf_path)
5293 GOTO(out, rc = -EOVERFLOW);
5294 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
5297 /* keep the last resolved fid to the client, so the
5298 * client will build the left path on another MDT for
5300 fp->gf_fid = *tmpfid;
5306 ptr++; /* skip leading / */
5307 memmove(fp->gf_path, ptr, fp->gf_path + fp->gf_pathlen - ptr);
5314 * Given an MDT object, use mdt_path_current to get the path.
5315 * Essentially a wrapper to retry mdt_path_current a set number of times
5316 * if -EAGAIN is returned (usually because an object is being moved).
5318 * Part of the MDT layer implementation of lfs fid2path.
5320 * \param[in] info Per-thread common data shared by mdt level handlers.
5321 * \param[in] obj Object to do path lookup of
5322 * \param[in,out] fp User-provided struct for arguments and to store path
5325 * \retval 0 Lookup successful, path information stored in fp
5326 * \retval negative errno if there was a problem
5328 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
5329 struct getinfo_fid2path *fp)
5331 struct mdt_device *mdt = info->mti_mdt;
5336 if (fp->gf_pathlen < 3)
5339 if (lu_fid_eq(&mdt->mdt_md_root_fid, mdt_object_fid(obj))) {
5340 fp->gf_path[0] = '\0';
5344 /* Retry multiple times in case file is being moved */
5345 while (tries-- && rc == -EAGAIN)
5346 rc = mdt_path_current(info, obj, fp);
5352 * Get the full path of the provided FID, as of changelog record recno.
5354 * This checks sanity and looks up object for user provided FID
5355 * before calling the actual path lookup code.
5357 * Part of the MDT layer implementation of lfs fid2path.
5359 * \param[in] info Per-thread common data shared by mdt level handlers.
5360 * \param[in,out] fp User-provided struct for arguments and to store path
5363 * \retval 0 Lookup successful, path information and recno stored in fp
5364 * \retval -ENOENT, object does not exist
5365 * \retval negative errno if there was a problem
5367 static int mdt_fid2path(struct mdt_thread_info *info,
5368 struct getinfo_fid2path *fp)
5370 struct mdt_device *mdt = info->mti_mdt;
5371 struct mdt_object *obj;
5375 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
5376 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
5378 if (!fid_is_sane(&fp->gf_fid))
5381 if (!fid_is_namespace_visible(&fp->gf_fid)) {
5382 CWARN("%s: "DFID" is invalid, sequence should be "
5383 ">= "LPX64"\n", mdt_obd_name(mdt),
5384 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
5388 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
5391 CDEBUG(D_IOCTL, "cannot find "DFID": rc = %d\n",
5392 PFID(&fp->gf_fid), rc);
5396 if (mdt_object_remote(obj))
5398 else if (!mdt_object_exists(obj))
5404 mdt_object_put(info->mti_env, obj);
5405 CDEBUG(D_IOCTL, "nonlocal object "DFID": rc = %d\n",
5406 PFID(&fp->gf_fid), rc);
5410 rc = mdt_path(info, obj, fp);
5412 CDEBUG(D_INFO, "fid "DFID", path %s recno "LPX64" linkno %u\n",
5413 PFID(&fp->gf_fid), fp->gf_path, fp->gf_recno, fp->gf_linkno);
5415 mdt_object_put(info->mti_env, obj);
5420 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key,
5421 void *val, int vallen)
5423 struct getinfo_fid2path *fpout, *fpin;
5426 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
5429 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
5430 lustre_swab_fid2path(fpin);
5432 memcpy(fpout, fpin, sizeof(*fpin));
5433 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
5436 rc = mdt_fid2path(info, fpout);
5440 int mdt_get_info(struct tgt_session_info *tsi)
5450 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
5452 CDEBUG(D_IOCTL, "No GETINFO key\n");
5453 RETURN(err_serious(-EFAULT));
5455 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
5458 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
5459 if (vallen == NULL) {
5460 CDEBUG(D_IOCTL, "%s: cannot get RMF_GETINFO_VALLEN buffer\n",
5461 tgt_name(tsi->tsi_tgt));
5462 RETURN(err_serious(-EFAULT));
5465 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
5467 rc = req_capsule_server_pack(tsi->tsi_pill);
5469 RETURN(err_serious(rc));
5471 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
5472 if (valout == NULL) {
5473 CDEBUG(D_IOCTL, "%s: cannot get get-info RPC out buffer\n",
5474 tgt_name(tsi->tsi_tgt));
5475 RETURN(err_serious(-EFAULT));
5478 if (KEY_IS(KEY_FID2PATH)) {
5479 struct mdt_thread_info *info = tsi2mdt_info(tsi);
5481 rc = mdt_rpc_fid2path(info, key, valout, *vallen);
5482 mdt_thread_info_fini(info);
5489 /* Pass the ioc down */
5490 static int mdt_ioc_child(struct lu_env *env, struct mdt_device *mdt,
5491 unsigned int cmd, int len, void *data)
5493 struct lu_context ioctl_session;
5494 struct md_device *next = mdt->mdt_child;
5498 rc = lu_context_init(&ioctl_session, LCT_SERVER_SESSION);
5501 ioctl_session.lc_thread = (struct ptlrpc_thread *)current;
5502 lu_context_enter(&ioctl_session);
5503 env->le_ses = &ioctl_session;
5505 LASSERT(next->md_ops->mdo_iocontrol);
5506 rc = next->md_ops->mdo_iocontrol(env, next, cmd, len, data);
5508 lu_context_exit(&ioctl_session);
5509 lu_context_fini(&ioctl_session);
5513 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
5515 struct obd_ioctl_data *data = karg;
5518 struct mdt_object *obj;
5519 struct mdt_lock_handle *lh;
5523 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
5524 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
5527 fid = (struct lu_fid *)data->ioc_inlbuf1;
5529 if (!fid_is_sane(fid))
5532 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
5534 lh = &mti->mti_lh[MDT_LH_PARENT];
5535 mdt_lock_reg_init(lh, LCK_CR);
5537 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
5539 RETURN(PTR_ERR(obj));
5541 if (mdt_object_remote(obj)) {
5544 * before calling version get the correct MDS should be
5545 * fid, this is error to find remote object here
5547 CERROR("nonlocal object "DFID"\n", PFID(fid));
5548 } else if (!mdt_object_exists(obj)) {
5549 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
5552 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
5553 *(__u64 *)data->ioc_inlbuf2 = version;
5556 mdt_object_unlock_put(mti, obj, lh, 1);
5560 /* ioctls on obd dev */
5561 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
5562 void *karg, void *uarg)
5565 struct obd_device *obd = exp->exp_obd;
5566 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
5567 struct dt_device *dt = mdt->mdt_bottom;
5571 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
5572 rc = lu_env_init(&env, LCT_MD_THREAD);
5578 rc = mdt_device_sync(&env, mdt);
5580 case OBD_IOC_SET_READONLY:
5581 rc = dt->dd_ops->dt_ro(&env, dt);
5583 case OBD_IOC_ABORT_RECOVERY:
5584 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
5585 obd->obd_force_abort_recovery = 1;
5586 target_stop_recovery_thread(obd);
5589 case OBD_IOC_CHANGELOG_REG:
5590 case OBD_IOC_CHANGELOG_DEREG:
5591 case OBD_IOC_CHANGELOG_CLEAR:
5592 rc = mdt_ioc_child(&env, mdt, cmd, len, karg);
5594 case OBD_IOC_START_LFSCK: {
5595 struct md_device *next = mdt->mdt_child;
5596 struct obd_ioctl_data *data = karg;
5597 struct lfsck_start_param lsp;
5599 if (unlikely(data == NULL)) {
5604 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
5605 lsp.lsp_index_valid = 0;
5606 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
5609 case OBD_IOC_STOP_LFSCK: {
5610 struct md_device *next = mdt->mdt_child;
5611 struct obd_ioctl_data *data = karg;
5612 struct lfsck_stop stop;
5614 stop.ls_status = LS_STOPPED;
5615 /* Old lfsck utils may pass NULL @stop. */
5616 if (data->ioc_inlbuf1 == NULL)
5620 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
5622 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
5625 case OBD_IOC_GET_OBJ_VERSION: {
5626 struct mdt_thread_info *mti;
5627 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5628 memset(mti, 0, sizeof *mti);
5629 mti->mti_env = &env;
5633 rc = mdt_ioc_version_get(mti, karg);
5636 case OBD_IOC_CATLOGLIST: {
5637 struct mdt_thread_info *mti;
5639 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5640 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
5641 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
5642 &mti->mti_tmp_fid1);
5647 CERROR("%s: Not supported cmd = %d, rc = %d\n",
5648 mdt_obd_name(mdt), cmd, rc);
5655 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
5657 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
5658 struct lfsck_start_param lsp;
5662 lsp.lsp_start = NULL;
5663 lsp.lsp_index_valid = 0;
5664 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
5665 OBD_IOC_START_LFSCK,
5667 if (rc != 0 && rc != -EALREADY)
5668 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
5669 mdt_obd_name(mdt), rc);
5671 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
5675 static int mdt_obd_postrecov(struct obd_device *obd)
5680 rc = lu_env_init(&env, LCT_MD_THREAD);
5683 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
5688 static struct obd_ops mdt_obd_device_ops = {
5689 .o_owner = THIS_MODULE,
5690 .o_set_info_async = mdt_obd_set_info_async,
5691 .o_connect = mdt_obd_connect,
5692 .o_reconnect = mdt_obd_reconnect,
5693 .o_disconnect = mdt_obd_disconnect,
5694 .o_init_export = mdt_init_export,
5695 .o_destroy_export = mdt_destroy_export,
5696 .o_iocontrol = mdt_iocontrol,
5697 .o_postrecov = mdt_obd_postrecov,
5700 static struct lu_device* mdt_device_fini(const struct lu_env *env,
5701 struct lu_device *d)
5703 struct mdt_device *m = mdt_dev(d);
5710 static struct lu_device *mdt_device_free(const struct lu_env *env,
5711 struct lu_device *d)
5713 struct mdt_device *m = mdt_dev(d);
5716 lu_device_fini(&m->mdt_lu_dev);
5722 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
5723 struct lu_device_type *t,
5724 struct lustre_cfg *cfg)
5726 struct lu_device *l;
5727 struct mdt_device *m;
5734 rc = mdt_init0(env, m, t, cfg);
5736 mdt_device_free(env, l);
5741 l = ERR_PTR(-ENOMEM);
5745 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
5746 LU_KEY_INIT(mdt, struct mdt_thread_info);
5748 static void mdt_key_fini(const struct lu_context *ctx,
5749 struct lu_context_key *key, void* data)
5751 struct mdt_thread_info *info = data;
5753 if (info->mti_big_lmm) {
5754 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
5755 info->mti_big_lmm = NULL;
5756 info->mti_big_lmmsize = 0;
5761 /* context key: mdt_thread_key */
5762 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
5764 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
5766 return lu_ucred(info->mti_env);
5769 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
5771 return lu_ucred_check(info->mti_env);
5775 * Enable/disable COS (Commit On Sharing).
5777 * Set/Clear the COS flag in mdt options.
5779 * \param mdt mdt device
5780 * \param val 0 disables COS, other values enable COS
5782 void mdt_enable_cos(struct mdt_device *mdt, int val)
5787 mdt->mdt_opts.mo_cos = !!val;
5788 rc = lu_env_init(&env, LCT_LOCAL);
5789 if (unlikely(rc != 0)) {
5790 CWARN("%s: lu_env initialization failed, cannot "
5791 "sync: rc = %d\n", mdt_obd_name(mdt), rc);
5794 mdt_device_sync(&env, mdt);
5799 * Check COS (Commit On Sharing) status.
5801 * Return COS flag status.
5803 * \param mdt mdt device
5805 int mdt_cos_is_enabled(struct mdt_device *mdt)
5807 return mdt->mdt_opts.mo_cos != 0;
5810 static struct lu_device_type_operations mdt_device_type_ops = {
5811 .ldto_device_alloc = mdt_device_alloc,
5812 .ldto_device_free = mdt_device_free,
5813 .ldto_device_fini = mdt_device_fini
5816 static struct lu_device_type mdt_device_type = {
5817 .ldt_tags = LU_DEVICE_MD,
5818 .ldt_name = LUSTRE_MDT_NAME,
5819 .ldt_ops = &mdt_device_type_ops,
5820 .ldt_ctx_tags = LCT_MD_THREAD
5823 static int __init mdt_mod_init(void)
5827 CLASSERT(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") ==
5828 FID_NOBRACE_LEN + 1);
5829 CLASSERT(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") ==
5831 rc = lu_kmem_init(mdt_caches);
5835 rc = mds_mod_init();
5839 rc = class_register_type(&mdt_obd_device_ops, NULL, true, NULL,
5840 LUSTRE_MDT_NAME, &mdt_device_type);
5845 lu_kmem_fini(mdt_caches);
5852 static void __exit mdt_mod_exit(void)
5854 class_unregister_type(LUSTRE_MDT_NAME);
5856 lu_kmem_fini(mdt_caches);
5859 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
5860 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
5861 MODULE_VERSION(LUSTRE_VERSION_STRING);
5862 MODULE_LICENSE("GPL");
5864 module_init(mdt_mod_init);
5865 module_exit(mdt_mod_exit);