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 mdl_mode_t mdt_mdl_lock_modes[] = {
75 [LCK_MINMODE] = MDL_MINMODE,
82 [LCK_GROUP] = MDL_GROUP
85 ldlm_mode_t mdt_dlm_lock_modes[] = {
86 [MDL_MINMODE] = LCK_MINMODE,
93 [MDL_GROUP] = LCK_GROUP
96 static struct mdt_device *mdt_dev(struct lu_device *d);
97 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
99 static const struct lu_object_operations mdt_obj_ops;
101 /* Slab for MDT object allocation */
102 static struct kmem_cache *mdt_object_kmem;
104 /* For HSM restore handles */
105 struct kmem_cache *mdt_hsm_cdt_kmem;
107 /* For HSM request handles */
108 struct kmem_cache *mdt_hsm_car_kmem;
110 static struct lu_kmem_descr mdt_caches[] = {
112 .ckd_cache = &mdt_object_kmem,
113 .ckd_name = "mdt_obj",
114 .ckd_size = sizeof(struct mdt_object)
117 .ckd_cache = &mdt_hsm_cdt_kmem,
118 .ckd_name = "mdt_cdt_restore_handle",
119 .ckd_size = sizeof(struct cdt_restore_handle)
122 .ckd_cache = &mdt_hsm_car_kmem,
123 .ckd_name = "mdt_cdt_agent_req",
124 .ckd_size = sizeof(struct cdt_agent_req)
131 int mdt_get_disposition(struct ldlm_reply *rep, int flag)
135 return (rep->lock_policy_res1 & flag);
138 void mdt_clear_disposition(struct mdt_thread_info *info,
139 struct ldlm_reply *rep, int flag)
142 info->mti_opdata &= ~flag;
143 tgt_opdata_clear(info->mti_env, flag);
146 rep->lock_policy_res1 &= ~flag;
149 void mdt_set_disposition(struct mdt_thread_info *info,
150 struct ldlm_reply *rep, int flag)
153 info->mti_opdata |= flag;
154 tgt_opdata_set(info->mti_env, flag);
157 rep->lock_policy_res1 |= flag;
160 void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm)
162 lh->mlh_pdo_hash = 0;
163 lh->mlh_reg_mode = lm;
164 lh->mlh_rreg_mode = lm;
165 lh->mlh_type = MDT_REG_LOCK;
168 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, ldlm_mode_t lock_mode,
169 const struct lu_name *lname)
171 lh->mlh_reg_mode = lock_mode;
172 lh->mlh_rreg_mode = lock_mode;
173 lh->mlh_type = MDT_PDO_LOCK;
175 if (lu_name_is_valid(lname)) {
176 lh->mlh_pdo_hash = full_name_hash(lname->ln_name,
178 /* XXX Workaround for LU-2856
180 * Zero is a valid return value of full_name_hash, but
181 * several users of mlh_pdo_hash assume a non-zero
182 * hash value. We therefore map zero onto an
183 * arbitrary, but consistent value (1) to avoid
184 * problems further down the road. */
185 if (unlikely(lh->mlh_pdo_hash == 0))
186 lh->mlh_pdo_hash = 1;
188 lh->mlh_pdo_hash = 0;
192 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
193 struct mdt_lock_handle *lh)
199 * Any dir access needs couple of locks:
201 * 1) on part of dir we gonna take lookup/modify;
203 * 2) on whole dir to protect it from concurrent splitting and/or to
204 * flush client's cache for readdir().
206 * so, for a given mode and object this routine decides what lock mode
207 * to use for lock #2:
209 * 1) if caller's gonna lookup in dir then we need to protect dir from
210 * being splitted only - LCK_CR
212 * 2) if caller's gonna modify dir then we need to protect dir from
213 * being splitted and to flush cache - LCK_CW
215 * 3) if caller's gonna modify dir and that dir seems ready for
216 * splitting then we need to protect it from any type of access
217 * (lookup/modify/split) - LCK_EX --bzzz
220 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
221 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
224 * Ask underlaying level its opinion about preferable PDO lock mode
225 * having access type passed as regular lock mode:
227 * - MDL_MINMODE means that lower layer does not want to specify lock
230 * - MDL_NL means that no PDO lock should be taken. This is used in some
231 * cases. Say, for non-splittable directories no need to use PDO locks
234 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
235 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
237 if (mode != MDL_MINMODE) {
238 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
241 * Lower layer does not want to specify locking mode. We do it
242 * our selves. No special protection is needed, just flush
243 * client's cache on modification and allow concurrent
246 switch (lh->mlh_reg_mode) {
248 lh->mlh_pdo_mode = LCK_EX;
251 lh->mlh_pdo_mode = LCK_CR;
254 lh->mlh_pdo_mode = LCK_CW;
257 CERROR("Not expected lock type (0x%x)\n",
258 (int)lh->mlh_reg_mode);
263 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
267 static int mdt_getstatus(struct tgt_session_info *tsi)
269 struct mdt_thread_info *info = tsi2mdt_info(tsi);
270 struct mdt_device *mdt = info->mti_mdt;
271 struct mdt_body *repbody;
276 rc = mdt_check_ucred(info);
278 GOTO(out, rc = err_serious(rc));
280 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK))
281 GOTO(out, rc = err_serious(-ENOMEM));
283 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
284 repbody->mbo_fid1 = mdt->mdt_md_root_fid;
285 repbody->mbo_valid |= OBD_MD_FLID;
287 if (tsi->tsi_tgt->lut_mds_capa &&
288 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
289 struct mdt_object *root;
290 struct lustre_capa *capa;
292 root = mdt_object_find(info->mti_env, mdt, &repbody->mbo_fid1);
294 GOTO(out, rc = PTR_ERR(root));
296 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
298 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
299 rc = mo_capa_get(info->mti_env, mdt_object_child(root), capa,
301 mdt_object_put(info->mti_env, root);
303 repbody->mbo_valid |= OBD_MD_FLMDSCAPA;
307 mdt_thread_info_fini(info);
311 static int mdt_statfs(struct tgt_session_info *tsi)
313 struct ptlrpc_request *req = tgt_ses_req(tsi);
314 struct mdt_thread_info *info = tsi2mdt_info(tsi);
315 struct md_device *next = info->mti_mdt->mdt_child;
316 struct ptlrpc_service_part *svcpt;
317 struct obd_statfs *osfs;
322 svcpt = req->rq_rqbd->rqbd_svcpt;
324 /* This will trigger a watchdog timeout */
325 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
326 (MDT_SERVICE_WATCHDOG_FACTOR *
327 at_get(&svcpt->scp_at_estimate)) + 1);
329 rc = mdt_check_ucred(info);
331 GOTO(out, rc = err_serious(rc));
333 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
334 GOTO(out, rc = err_serious(-ENOMEM));
336 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
338 GOTO(out, rc = -EPROTO);
340 /** statfs information are cached in the mdt_device */
341 if (cfs_time_before_64(info->mti_mdt->mdt_osfs_age,
342 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS))) {
343 /** statfs data is too old, get up-to-date one */
344 rc = next->md_ops->mdo_statfs(info->mti_env, next, osfs);
347 spin_lock(&info->mti_mdt->mdt_osfs_lock);
348 info->mti_mdt->mdt_osfs = *osfs;
349 info->mti_mdt->mdt_osfs_age = cfs_time_current_64();
350 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
352 /** use cached statfs data */
353 spin_lock(&info->mti_mdt->mdt_osfs_lock);
354 *osfs = info->mti_mdt->mdt_osfs;
355 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
359 mdt_counter_incr(req, LPROC_MDT_STATFS);
361 mdt_thread_info_fini(info);
365 #ifdef CONFIG_FS_POSIX_ACL
367 * Pack ACL data into the reply. UIDs/GIDs are mapped and filtered by nodemap.
369 * \param info thread info object
370 * \param repbody reply to pack ACLs into
371 * \param o mdt object of file to examine
372 * \param nodemap nodemap of client to reply to
374 * \retval -errno error getting or parsing ACL from disk
376 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
377 struct mdt_object *o, struct lu_nodemap *nodemap)
379 const struct lu_env *env = info->mti_env;
380 struct md_object *next = mdt_object_child(o);
381 struct lu_buf *buf = &info->mti_buf;
384 buf->lb_buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
385 buf->lb_len = req_capsule_get_size(info->mti_pill, &RMF_ACL,
387 if (buf->lb_len == 0)
390 rc = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_ACCESS);
392 if (rc == -ENODATA) {
393 repbody->mbo_aclsize = 0;
394 repbody->mbo_valid |= OBD_MD_FLACL;
396 } else if (rc == -EOPNOTSUPP) {
399 CERROR("%s: unable to read "DFID" ACL: rc = %d\n",
400 mdt_obd_name(info->mti_mdt),
401 PFID(mdt_object_fid(o)), rc);
404 rc = nodemap_map_acl(nodemap, buf->lb_buf,
405 rc, NODEMAP_FS_TO_CLIENT);
406 /* if all ACLs mapped out, rc is still >= 0 */
408 CERROR("%s: nodemap_map_acl unable to parse "DFID
409 " ACL: rc = %d\n", mdt_obd_name(info->mti_mdt),
410 PFID(mdt_object_fid(o)), rc);
412 repbody->mbo_aclsize = rc;
413 repbody->mbo_valid |= OBD_MD_FLACL;
421 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
422 const struct lu_attr *attr, const struct lu_fid *fid)
424 struct md_attr *ma = &info->mti_attr;
425 struct obd_export *exp = info->mti_exp;
426 struct lu_nodemap *nodemap = exp->exp_target_data.ted_nodemap;
428 LASSERT(ma->ma_valid & MA_INODE);
430 if (attr->la_valid & LA_ATIME) {
431 b->mbo_atime = attr->la_atime;
432 b->mbo_valid |= OBD_MD_FLATIME;
434 if (attr->la_valid & LA_MTIME) {
435 b->mbo_mtime = attr->la_mtime;
436 b->mbo_valid |= OBD_MD_FLMTIME;
438 if (attr->la_valid & LA_CTIME) {
439 b->mbo_ctime = attr->la_ctime;
440 b->mbo_valid |= OBD_MD_FLCTIME;
442 if (attr->la_valid & LA_FLAGS) {
443 b->mbo_flags = attr->la_flags;
444 b->mbo_valid |= OBD_MD_FLFLAGS;
446 if (attr->la_valid & LA_NLINK) {
447 b->mbo_nlink = attr->la_nlink;
448 b->mbo_valid |= OBD_MD_FLNLINK;
450 if (attr->la_valid & LA_UID) {
451 b->mbo_uid = nodemap_map_id(nodemap, NODEMAP_UID,
452 NODEMAP_FS_TO_CLIENT,
454 b->mbo_valid |= OBD_MD_FLUID;
456 if (attr->la_valid & LA_GID) {
457 b->mbo_gid = nodemap_map_id(nodemap, NODEMAP_GID,
458 NODEMAP_FS_TO_CLIENT,
460 b->mbo_valid |= OBD_MD_FLGID;
462 b->mbo_mode = attr->la_mode;
463 if (attr->la_valid & LA_MODE)
464 b->mbo_valid |= OBD_MD_FLMODE;
465 if (attr->la_valid & LA_TYPE)
466 b->mbo_valid |= OBD_MD_FLTYPE;
470 b->mbo_valid |= OBD_MD_FLID;
471 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, valid="LPX64"\n",
472 PFID(fid), b->mbo_nlink, b->mbo_mode, b->mbo_valid);
476 mdt_body_reverse_idmap(info, b);
478 if (!(attr->la_valid & LA_TYPE))
481 b->mbo_rdev = attr->la_rdev;
482 b->mbo_size = attr->la_size;
483 b->mbo_blocks = attr->la_blocks;
485 if (!S_ISREG(attr->la_mode)) {
486 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
487 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
488 /* means no objects are allocated on osts. */
489 LASSERT(!(ma->ma_valid & MA_LOV));
490 /* just ignore blocks occupied by extend attributes on MDS */
492 /* if no object is allocated on osts, the size on mds is valid.
494 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
495 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL &&
496 ma->ma_lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) {
497 /* A released file stores its size on MDS. */
498 /* But return 1 block for released file, unless tools like tar
499 * will consider it fully sparse. (LU-3864)
501 if (unlikely(b->mbo_size == 0))
505 b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
508 if (fid != NULL && (b->mbo_valid & OBD_MD_FLSIZE))
509 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
510 PFID(fid), (unsigned long long)b->mbo_size);
513 static inline int mdt_body_has_lov(const struct lu_attr *la,
514 const struct mdt_body *body)
516 return (S_ISREG(la->la_mode) && (body->mbo_valid & OBD_MD_FLEASIZE)) ||
517 (S_ISDIR(la->la_mode) && (body->mbo_valid & OBD_MD_FLDIREA));
520 void mdt_client_compatibility(struct mdt_thread_info *info)
522 struct mdt_body *body;
523 struct ptlrpc_request *req = mdt_info_req(info);
524 struct obd_export *exp = req->rq_export;
525 struct md_attr *ma = &info->mti_attr;
526 struct lu_attr *la = &ma->ma_attr;
529 if (exp_connect_layout(exp))
530 /* the client can deal with 16-bit lmm_stripe_count */
533 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
535 if (!mdt_body_has_lov(la, body))
538 /* now we have a reply with a lov for a client not compatible with the
539 * layout lock so we have to clean the layout generation number */
540 if (S_ISREG(la->la_mode))
541 ma->ma_lmm->lmm_layout_gen = 0;
545 static int mdt_attr_get_eabuf_size(struct mdt_thread_info *info,
546 struct mdt_object *o)
548 const struct lu_env *env = info->mti_env;
551 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
560 /* Is it a directory? Let's check for the LMV as well */
561 if (S_ISDIR(lu_object_attr(&mdt_object_child(o)->mo_lu))) {
562 rc2 = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
566 rc2 = mo_xattr_get(env, mdt_object_child(o),
568 XATTR_NAME_DEFAULT_LMV);
570 if ((rc2 < 0 && rc2 != -ENODATA) || (rc2 > rc))
578 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
581 const struct lu_env *env = info->mti_env;
585 LASSERT(info->mti_big_lmm_used == 0);
586 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
590 /* big_lmm may need to be grown */
591 if (info->mti_big_lmmsize < rc) {
592 int size = size_roundup_power2(rc);
594 if (info->mti_big_lmmsize > 0) {
595 /* free old buffer */
596 LASSERT(info->mti_big_lmm);
597 OBD_FREE_LARGE(info->mti_big_lmm,
598 info->mti_big_lmmsize);
599 info->mti_big_lmm = NULL;
600 info->mti_big_lmmsize = 0;
603 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
604 if (info->mti_big_lmm == NULL)
606 info->mti_big_lmmsize = size;
608 LASSERT(info->mti_big_lmmsize >= rc);
610 info->mti_buf.lb_buf = info->mti_big_lmm;
611 info->mti_buf.lb_len = info->mti_big_lmmsize;
612 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
617 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
618 struct md_attr *ma, const char *name)
620 struct md_object *next = mdt_object_child(o);
621 struct lu_buf *buf = &info->mti_buf;
624 if (strcmp(name, XATTR_NAME_LOV) == 0) {
625 buf->lb_buf = ma->ma_lmm;
626 buf->lb_len = ma->ma_lmm_size;
627 LASSERT(!(ma->ma_valid & MA_LOV));
628 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
629 buf->lb_buf = ma->ma_lmv;
630 buf->lb_len = ma->ma_lmv_size;
631 LASSERT(!(ma->ma_valid & MA_LMV));
632 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
633 buf->lb_buf = ma->ma_lmv;
634 buf->lb_len = ma->ma_lmv_size;
635 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
640 rc = mo_xattr_get(info->mti_env, next, buf, name);
644 if (strcmp(name, XATTR_NAME_LOV) == 0) {
645 if (info->mti_big_lmm_used)
646 ma->ma_lmm = info->mti_big_lmm;
648 /* NOT return LOV EA with hole to old client. */
649 if (unlikely(le32_to_cpu(ma->ma_lmm->lmm_pattern) &
650 LOV_PATTERN_F_HOLE) &&
651 !(exp_connect_flags(info->mti_exp) &
652 OBD_CONNECT_LFSCK)) {
655 ma->ma_lmm_size = rc;
656 ma->ma_valid |= MA_LOV;
658 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
659 if (info->mti_big_lmm_used)
660 ma->ma_lmv = info->mti_big_lmm;
662 ma->ma_lmv_size = rc;
663 ma->ma_valid |= MA_LMV;
664 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
665 ma->ma_lmv_size = rc;
666 ma->ma_valid |= MA_LMV_DEF;
669 /* Update mdt_max_mdsize so all clients will be aware that */
670 if (info->mti_mdt->mdt_max_mdsize < rc)
671 info->mti_mdt->mdt_max_mdsize = rc;
674 } else if (rc == -ENODATA) {
677 } else if (rc == -ERANGE) {
678 /* Default LMV has fixed size, so it must be able to fit
679 * in the original buffer */
680 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
682 rc = mdt_big_xattr_get(info, o, name);
684 info->mti_big_lmm_used = 1;
692 static int mdt_attr_get_pfid(struct mdt_thread_info *info,
693 struct mdt_object *o, struct lu_fid *pfid)
695 struct lu_buf *buf = &info->mti_buf;
696 struct link_ea_header *leh;
697 struct link_ea_entry *lee;
701 buf->lb_buf = info->mti_big_lmm;
702 buf->lb_len = info->mti_big_lmmsize;
703 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
704 buf, XATTR_NAME_LINK);
705 /* ignore errors, MA_PFID won't be set and it is
706 * up to the caller to treat this as an error */
707 if (rc == -ERANGE || buf->lb_len == 0) {
708 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
709 buf->lb_buf = info->mti_big_lmm;
710 buf->lb_len = info->mti_big_lmmsize;
715 if (rc < sizeof(*leh)) {
716 CERROR("short LinkEA on "DFID": rc = %d\n",
717 PFID(mdt_object_fid(o)), rc);
721 leh = (struct link_ea_header *) buf->lb_buf;
722 lee = (struct link_ea_entry *)(leh + 1);
723 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
724 leh->leh_magic = LINK_EA_MAGIC;
725 leh->leh_reccount = __swab32(leh->leh_reccount);
726 leh->leh_len = __swab64(leh->leh_len);
728 if (leh->leh_magic != LINK_EA_MAGIC)
730 if (leh->leh_reccount == 0)
733 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
734 fid_be_to_cpu(pfid, pfid);
739 int mdt_attr_get_complex(struct mdt_thread_info *info,
740 struct mdt_object *o, struct md_attr *ma)
742 const struct lu_env *env = info->mti_env;
743 struct md_object *next = mdt_object_child(o);
744 struct lu_buf *buf = &info->mti_buf;
745 int need = ma->ma_need;
752 if (mdt_object_exists(o) == 0)
753 GOTO(out, rc = -ENOENT);
754 mode = lu_object_attr(&next->mo_lu);
756 if (need & MA_INODE) {
757 ma->ma_need = MA_INODE;
758 rc = mo_attr_get(env, next, ma);
761 ma->ma_valid |= MA_INODE;
764 if (need & MA_PFID) {
765 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
767 ma->ma_valid |= MA_PFID;
768 /* ignore this error, parent fid is not mandatory */
772 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
773 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
778 if (need & MA_LMV && S_ISDIR(mode)) {
779 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
784 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
785 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
790 if (need & MA_HSM && S_ISREG(mode)) {
791 buf->lb_buf = info->mti_xattr_buf;
792 buf->lb_len = sizeof(info->mti_xattr_buf);
793 CLASSERT(sizeof(struct hsm_attrs) <=
794 sizeof(info->mti_xattr_buf));
795 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
796 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
798 ma->ma_valid |= MA_HSM;
799 else if (rc2 < 0 && rc2 != -ENODATA)
803 #ifdef CONFIG_FS_POSIX_ACL
804 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
805 buf->lb_buf = ma->ma_acl;
806 buf->lb_len = ma->ma_acl_size;
807 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
809 ma->ma_acl_size = rc2;
810 ma->ma_valid |= MA_ACL_DEF;
811 } else if (rc2 == -ENODATA) {
820 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = "LPX64" ma_lmm=%p\n",
821 rc, ma->ma_valid, ma->ma_lmm);
825 static int mdt_getattr_internal(struct mdt_thread_info *info,
826 struct mdt_object *o, int ma_need)
828 struct md_object *next = mdt_object_child(o);
829 const struct mdt_body *reqbody = info->mti_body;
830 struct ptlrpc_request *req = mdt_info_req(info);
831 struct md_attr *ma = &info->mti_attr;
832 struct lu_attr *la = &ma->ma_attr;
833 struct req_capsule *pill = info->mti_pill;
834 const struct lu_env *env = info->mti_env;
835 struct mdt_body *repbody;
836 struct lu_buf *buffer = &info->mti_buf;
837 struct obd_export *exp = info->mti_exp;
838 struct lu_nodemap *nodemap = exp->exp_target_data.ted_nodemap;
843 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
844 RETURN(err_serious(-ENOMEM));
846 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
850 if (mdt_object_remote(o)) {
851 /* This object is located on remote node.*/
852 /* Return -ENOTSUPP for old client */
853 if (!mdt_is_dne_client(req->rq_export))
854 GOTO(out, rc = -ENOTSUPP);
856 repbody->mbo_fid1 = *mdt_object_fid(o);
857 repbody->mbo_valid = OBD_MD_FLID | OBD_MD_MDS;
861 if (reqbody->mbo_eadatasize > 0) {
862 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
863 if (buffer->lb_buf == NULL)
864 GOTO(out, rc = -EPROTO);
865 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD,
868 buffer->lb_buf = NULL;
870 ma_need &= ~(MA_LOV | MA_LMV);
871 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
872 mdt_obd_name(info->mti_mdt),
873 req->rq_export->exp_client_uuid.uuid);
876 /* If it is dir object and client require MEA, then we got MEA */
877 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
878 (reqbody->mbo_valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
879 /* Assumption: MDT_MD size is enough for lmv size. */
880 ma->ma_lmv = buffer->lb_buf;
881 ma->ma_lmv_size = buffer->lb_len;
882 ma->ma_need = MA_INODE;
883 if (ma->ma_lmv_size > 0) {
884 if (reqbody->mbo_valid & OBD_MD_MEA)
885 ma->ma_need |= MA_LMV;
886 else if (reqbody->mbo_valid & OBD_MD_DEFAULT_MEA)
887 ma->ma_need |= MA_LMV_DEF;
890 ma->ma_lmm = buffer->lb_buf;
891 ma->ma_lmm_size = buffer->lb_len;
892 ma->ma_need = MA_INODE | MA_HSM;
893 if (ma->ma_lmm_size > 0)
894 ma->ma_need |= MA_LOV;
897 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
898 reqbody->mbo_valid & OBD_MD_FLDIREA &&
899 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
900 /* get default stripe info for this dir. */
901 ma->ma_need |= MA_LOV_DEF;
903 ma->ma_need |= ma_need;
905 rc = mdt_attr_get_complex(info, o, ma);
907 CERROR("%s: getattr error for "DFID": rc = %d\n",
908 mdt_obd_name(info->mti_mdt),
909 PFID(mdt_object_fid(o)), rc);
913 /* if file is released, check if a restore is running */
914 if ((ma->ma_valid & MA_HSM) && (ma->ma_hsm.mh_flags & HS_RELEASED) &&
915 mdt_hsm_restore_is_running(info, mdt_object_fid(o))) {
916 repbody->mbo_t_state = MS_RESTORE;
917 repbody->mbo_valid |= OBD_MD_TSTATE;
920 is_root = lu_fid_eq(mdt_object_fid(o), &info->mti_mdt->mdt_md_root_fid);
922 /* the Lustre protocol supposes to return default striping
923 * on the user-visible root if explicitly requested */
924 if ((ma->ma_valid & MA_LOV) == 0 && S_ISDIR(la->la_mode) &&
925 (ma->ma_need & MA_LOV_DEF && is_root) && ma->ma_need & MA_LOV) {
926 struct lu_fid rootfid;
927 struct mdt_object *root;
928 struct mdt_device *mdt = info->mti_mdt;
930 rc = dt_root_get(env, mdt->mdt_bottom, &rootfid);
933 root = mdt_object_find(env, mdt, &rootfid);
935 RETURN(PTR_ERR(root));
936 rc = mdt_stripe_get(info, root, ma, XATTR_NAME_LOV);
937 mdt_object_put(info->mti_env, root);
939 CERROR("%s: getattr error for "DFID": rc = %d\n",
940 mdt_obd_name(info->mti_mdt),
941 PFID(mdt_object_fid(o)), rc);
946 if (likely(ma->ma_valid & MA_INODE))
947 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
951 if (mdt_body_has_lov(la, reqbody)) {
952 if (ma->ma_valid & MA_LOV) {
953 LASSERT(ma->ma_lmm_size);
954 repbody->mbo_eadatasize = ma->ma_lmm_size;
955 if (S_ISDIR(la->la_mode))
956 repbody->mbo_valid |= OBD_MD_FLDIREA;
958 repbody->mbo_valid |= OBD_MD_FLEASIZE;
959 mdt_dump_lmm(D_INFO, ma->ma_lmm, repbody->mbo_valid);
961 if (ma->ma_valid & MA_LMV) {
962 /* Return -ENOTSUPP for old client */
963 if (!mdt_is_striped_client(req->rq_export))
966 LASSERT(S_ISDIR(la->la_mode));
967 mdt_dump_lmv(D_INFO, ma->ma_lmv);
968 repbody->mbo_eadatasize = ma->ma_lmv_size;
969 repbody->mbo_valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
971 if (ma->ma_valid & MA_LMV_DEF) {
972 /* Return -ENOTSUPP for old client */
973 if (!mdt_is_striped_client(req->rq_export))
975 LASSERT(S_ISDIR(la->la_mode));
976 repbody->mbo_eadatasize = ma->ma_lmv_size;
977 repbody->mbo_valid |= (OBD_MD_FLDIREA |
980 } else if (S_ISLNK(la->la_mode) &&
981 reqbody->mbo_valid & OBD_MD_LINKNAME) {
982 buffer->lb_buf = ma->ma_lmm;
983 /* eadatasize from client includes NULL-terminator, so
984 * there is no need to read it */
985 buffer->lb_len = reqbody->mbo_eadatasize - 1;
986 rc = mo_readlink(env, next, buffer);
987 if (unlikely(rc <= 0)) {
988 CERROR("%s: readlink failed for "DFID": rc = %d\n",
989 mdt_obd_name(info->mti_mdt),
990 PFID(mdt_object_fid(o)), rc);
993 int print_limit = min_t(int, PAGE_CACHE_SIZE - 128, rc);
995 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
997 repbody->mbo_valid |= OBD_MD_LINKNAME;
998 /* we need to report back size with NULL-terminator
999 * because client expects that */
1000 repbody->mbo_eadatasize = rc + 1;
1001 if (repbody->mbo_eadatasize != reqbody->mbo_eadatasize)
1002 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
1003 "on "DFID ", expected %d\n",
1004 mdt_obd_name(info->mti_mdt),
1005 rc, PFID(mdt_object_fid(o)),
1006 reqbody->mbo_eadatasize - 1);
1007 /* NULL terminate */
1008 ((char *)ma->ma_lmm)[rc] = 0;
1010 /* If the total CDEBUG() size is larger than a page, it
1011 * will print a warning to the console, avoid this by
1012 * printing just the last part of the symlink. */
1013 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
1014 print_limit < rc ? "..." : "", print_limit,
1015 (char *)ma->ma_lmm + rc - print_limit, rc);
1020 if (reqbody->mbo_valid & OBD_MD_FLMODEASIZE) {
1021 repbody->mbo_max_cookiesize = 0;
1022 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
1023 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
1024 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
1025 "MAX_COOKIE to : %d:%d\n", repbody->mbo_max_mdsize,
1026 repbody->mbo_max_cookiesize);
1029 if (exp_connect_rmtclient(info->mti_exp) &&
1030 reqbody->mbo_valid & OBD_MD_FLRMTPERM) {
1031 void *buf = req_capsule_server_get(pill, &RMF_ACL);
1033 /* mdt_getattr_lock only */
1034 rc = mdt_pack_remote_perm(info, o, buf);
1036 repbody->mbo_valid &= ~OBD_MD_FLRMTPERM;
1037 repbody->mbo_aclsize = 0;
1040 repbody->mbo_valid |= OBD_MD_FLRMTPERM;
1041 repbody->mbo_aclsize = sizeof(struct mdt_remote_perm);
1044 #ifdef CONFIG_FS_POSIX_ACL
1045 else if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
1046 (reqbody->mbo_valid & OBD_MD_FLACL))
1047 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
1050 if (reqbody->mbo_valid & OBD_MD_FLMDSCAPA &&
1051 info->mti_mdt->mdt_lut.lut_mds_capa &&
1052 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
1053 struct lustre_capa *capa;
1055 capa = req_capsule_server_get(pill, &RMF_CAPA1);
1057 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
1058 rc = mo_capa_get(env, next, capa, 0);
1061 repbody->mbo_valid |= OBD_MD_FLMDSCAPA;
1066 mdt_counter_incr(req, LPROC_MDT_GETATTR);
1071 static int mdt_renew_capa(struct mdt_thread_info *info)
1073 struct mdt_object *obj = info->mti_object;
1074 struct mdt_body *body;
1075 struct lustre_capa *capa, *c;
1079 /* if object doesn't exist, or server has disabled capability,
1080 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
1083 if (!obj || !info->mti_mdt->mdt_lut.lut_oss_capa ||
1084 !(exp_connect_flags(info->mti_exp) & OBD_CONNECT_OSS_CAPA))
1087 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1088 LASSERT(body != NULL);
1090 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
1093 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
1097 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
1099 body->mbo_valid |= OBD_MD_FLOSSCAPA;
1103 static int mdt_getattr(struct tgt_session_info *tsi)
1105 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1106 struct mdt_object *obj = info->mti_object;
1107 struct req_capsule *pill = info->mti_pill;
1108 struct mdt_body *reqbody;
1109 struct mdt_body *repbody;
1113 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1116 if (reqbody->mbo_valid & OBD_MD_FLOSSCAPA) {
1117 rc = req_capsule_server_pack(pill);
1119 RETURN(err_serious(rc));
1120 rc = mdt_renew_capa(info);
1121 GOTO(out_shrink, rc);
1124 LASSERT(obj != NULL);
1125 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1127 /* Unlike intent case where we need to pre-fill out buffers early on
1128 * in intent policy for ldlm reasons, here we can have a much better
1129 * guess at EA size by just reading it from disk.
1130 * Exceptions are readdir and (missing) directory striping */
1132 if (reqbody->mbo_valid & OBD_MD_LINKNAME) {
1133 /* No easy way to know how long is the symlink, but it cannot
1134 * be more than PATH_MAX, so we allocate +1 */
1137 /* A special case for fs ROOT: getattr there might fetch
1138 * default EA for entire fs, not just for this dir!
1140 } else if (lu_fid_eq(mdt_object_fid(obj),
1141 &info->mti_mdt->mdt_md_root_fid) &&
1142 (reqbody->mbo_valid & OBD_MD_FLDIREA) &&
1143 (lustre_msg_get_opc(mdt_info_req(info)->rq_reqmsg) ==
1145 /* Should the default strping be bigger, mdt_fix_reply
1146 * will reallocate */
1147 rc = DEF_REP_MD_SIZE;
1149 /* Read the actual EA size from disk */
1150 rc = mdt_attr_get_eabuf_size(info, obj);
1154 GOTO(out, rc = err_serious(rc));
1156 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, rc);
1158 rc = req_capsule_server_pack(pill);
1159 if (unlikely(rc != 0))
1160 GOTO(out, rc = err_serious(rc));
1162 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1163 LASSERT(repbody != NULL);
1164 repbody->mbo_eadatasize = 0;
1165 repbody->mbo_aclsize = 0;
1167 if (reqbody->mbo_valid & OBD_MD_FLRMTPERM)
1168 rc = mdt_init_ucred(info, reqbody);
1170 rc = mdt_check_ucred(info);
1172 GOTO(out_shrink, rc);
1174 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1177 * Don't check capability at all, because rename might getattr for
1178 * remote obj, and at that time no capability is available.
1180 mdt_set_capainfo(info, 1, &reqbody->mbo_fid1, BYPASS_CAPA);
1181 rc = mdt_getattr_internal(info, obj, 0);
1182 if (reqbody->mbo_valid & OBD_MD_FLRMTPERM)
1183 mdt_exit_ucred(info);
1186 mdt_client_compatibility(info);
1187 rc2 = mdt_fix_reply(info);
1191 mdt_thread_info_fini(info);
1196 * Exchange MOF_LOV_CREATED flags between two objects after a
1197 * layout swap. No assumption is made on whether o1 or o2 have
1198 * created objects or not.
1200 * \param[in,out] o1 First swap layout object
1201 * \param[in,out] o2 Second swap layout object
1203 static void mdt_swap_lov_flag(struct mdt_object *o1, struct mdt_object *o2)
1207 mutex_lock(&o1->mot_lov_mutex);
1208 mutex_lock(&o2->mot_lov_mutex);
1210 o1_flags = o1->mot_flags;
1211 o1->mot_flags = (o1->mot_flags & ~MOF_LOV_CREATED) |
1212 (o2->mot_flags & MOF_LOV_CREATED);
1214 o2->mot_flags = (o2->mot_flags & ~MOF_LOV_CREATED) |
1215 (o1_flags & MOF_LOV_CREATED);
1217 mutex_unlock(&o2->mot_lov_mutex);
1218 mutex_unlock(&o1->mot_lov_mutex);
1221 static int mdt_swap_layouts(struct tgt_session_info *tsi)
1223 struct mdt_thread_info *info;
1224 struct ptlrpc_request *req = tgt_ses_req(tsi);
1225 struct obd_export *exp = req->rq_export;
1226 struct mdt_object *o1, *o2, *o;
1227 struct mdt_lock_handle *lh1, *lh2;
1228 struct mdc_swap_layouts *msl;
1232 /* client does not support layout lock, so layout swaping
1234 * FIXME: there is a problem for old clients which don't support
1235 * layout lock yet. If those clients have already opened the file
1236 * they won't be notified at all so that old layout may still be
1237 * used to do IO. This can be fixed after file release is landed by
1238 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1239 if (!exp_connect_layout(exp))
1240 RETURN(-EOPNOTSUPP);
1242 info = tsi2mdt_info(tsi);
1244 if (info->mti_dlm_req != NULL)
1245 ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
1247 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA1, RCL_CLIENT))
1248 mdt_set_capainfo(info, 0, &info->mti_body->mbo_fid1,
1249 req_capsule_client_get(info->mti_pill,
1252 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA2, RCL_CLIENT))
1253 mdt_set_capainfo(info, 1, &info->mti_body->mbo_fid2,
1254 req_capsule_client_get(info->mti_pill,
1257 o1 = info->mti_object;
1258 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1259 &info->mti_body->mbo_fid2);
1261 GOTO(out, rc = PTR_ERR(o));
1263 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1264 GOTO(put, rc = -ENOENT);
1266 rc = lu_fid_cmp(&info->mti_body->mbo_fid1, &info->mti_body->mbo_fid2);
1267 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1273 /* permission check. Make sure the calling process having permission
1274 * to write both files. */
1275 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1280 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1285 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1287 GOTO(put, rc = -EPROTO);
1289 lh1 = &info->mti_lh[MDT_LH_NEW];
1290 mdt_lock_reg_init(lh1, LCK_EX);
1291 lh2 = &info->mti_lh[MDT_LH_OLD];
1292 mdt_lock_reg_init(lh2, LCK_EX);
1294 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1295 MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK);
1299 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1300 MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK);
1304 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1305 mdt_object_child(o2), msl->msl_flags);
1309 mdt_swap_lov_flag(o1, o2);
1312 mdt_object_unlock(info, o2, lh2, rc);
1314 mdt_object_unlock(info, o1, lh1, rc);
1316 mdt_object_put(info->mti_env, o);
1318 mdt_thread_info_fini(info);
1322 static int mdt_raw_lookup(struct mdt_thread_info *info,
1323 struct mdt_object *parent,
1324 const struct lu_name *lname,
1325 struct ldlm_reply *ldlm_rep)
1327 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1331 LASSERT(!info->mti_cross_ref);
1333 /* Only got the fid of this obj by name */
1334 fid_zero(child_fid);
1335 rc = mdo_lookup(info->mti_env, mdt_object_child(info->mti_object),
1336 lname, child_fid, &info->mti_spec);
1338 struct mdt_body *repbody;
1340 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1341 repbody->mbo_fid1 = *child_fid;
1342 repbody->mbo_valid = OBD_MD_FLID;
1343 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1344 } else if (rc == -ENOENT) {
1345 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1352 * UPDATE lock should be taken against parent, and be release before exit;
1353 * child_bits lock should be taken against child, and be returned back:
1354 * (1)normal request should release the child lock;
1355 * (2)intent request will grant the lock to client.
1357 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1358 struct mdt_lock_handle *lhc,
1360 struct ldlm_reply *ldlm_rep)
1362 struct ptlrpc_request *req = mdt_info_req(info);
1363 struct mdt_body *reqbody = NULL;
1364 struct mdt_object *parent = info->mti_object;
1365 struct mdt_object *child;
1366 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1367 struct lu_name *lname = NULL;
1368 struct mdt_lock_handle *lhp = NULL;
1369 struct ldlm_lock *lock;
1376 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1377 LASSERT(ergo(is_resent,
1378 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1383 if (info->mti_cross_ref) {
1384 /* Only getattr on the child. Parent is on another node. */
1385 mdt_set_disposition(info, ldlm_rep,
1386 DISP_LOOKUP_EXECD | DISP_LOOKUP_POS);
1388 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1390 PFID(mdt_object_fid(child)), ldlm_rep);
1392 rc = mdt_check_resent_lock(info, child, lhc);
1395 } else if (rc > 0) {
1396 mdt_lock_handle_init(lhc);
1397 mdt_lock_reg_init(lhc, LCK_PR);
1400 * Object's name is on another MDS, no lookup or layout
1401 * lock is needed here but update lock is.
1403 child_bits &= ~(MDS_INODELOCK_LOOKUP |
1404 MDS_INODELOCK_LAYOUT);
1405 child_bits |= MDS_INODELOCK_PERM | MDS_INODELOCK_UPDATE;
1407 rc = mdt_object_lock(info, child, lhc, child_bits,
1413 /* Finally, we can get attr for child. */
1414 if (!mdt_object_exists(child)) {
1415 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
1417 "remote object doesn't exist.\n");
1418 mdt_object_unlock(info, child, lhc, 1);
1422 mdt_set_capainfo(info, 0, mdt_object_fid(child), BYPASS_CAPA);
1423 rc = mdt_getattr_internal(info, child, 0);
1424 if (unlikely(rc != 0))
1425 mdt_object_unlock(info, child, lhc, 1);
1430 lname = &info->mti_name;
1431 mdt_name_unpack(info->mti_pill, &RMF_NAME, lname, MNF_FIX_ANON);
1433 if (lu_name_is_valid(lname)) {
1434 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", "
1435 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1436 PNAME(lname), ldlm_rep);
1438 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1439 if (unlikely(reqbody == NULL))
1440 RETURN(err_serious(-EPROTO));
1442 *child_fid = reqbody->mbo_fid2;
1444 if (unlikely(!fid_is_sane(child_fid)))
1445 RETURN(err_serious(-EINVAL));
1447 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1449 PFID(mdt_object_fid(parent)),
1450 PFID(&reqbody->mbo_fid2), ldlm_rep);
1453 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1455 if (unlikely(!mdt_object_exists(parent)) && lu_name_is_valid(lname)) {
1456 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1458 "Parent doesn't exist!\n");
1462 if (mdt_object_remote(parent)) {
1463 CERROR("%s: parent "DFID" is on remote target\n",
1464 mdt_obd_name(info->mti_mdt),
1465 PFID(mdt_object_fid(parent)));
1469 if (lu_name_is_valid(lname)) {
1470 /* Always allow to lookup ".." */
1471 if (unlikely(lname->ln_namelen == 2 &&
1472 lname->ln_name[0] == '.' &&
1473 lname->ln_name[1] == '.'))
1474 info->mti_spec.sp_permitted = 1;
1476 if (info->mti_body->mbo_valid == OBD_MD_FLID) {
1477 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1482 /* step 1: lock parent only if parent is a directory */
1483 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
1484 lhp = &info->mti_lh[MDT_LH_PARENT];
1485 mdt_lock_pdo_init(lhp, LCK_PR, lname);
1486 rc = mdt_object_lock(info, parent, lhp,
1487 MDS_INODELOCK_UPDATE,
1489 if (unlikely(rc != 0))
1493 /* step 2: lookup child's fid by name */
1494 fid_zero(child_fid);
1495 rc = mdo_lookup(info->mti_env, mdt_object_child(parent), lname,
1496 child_fid, &info->mti_spec);
1498 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1501 GOTO(out_parent, rc);
1504 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1507 *step 3: find the child object by fid & lock it.
1508 * regardless if it is local or remote.
1510 *Note: LU-3240 (commit 762f2114d282a98ebfa4dbbeea9298a8088ad24e)
1511 * set parent dir fid the same as child fid in getattr by fid case
1512 * we should not lu_object_find() the object again, could lead
1513 * to hung if there is a concurrent unlink destroyed the object.
1515 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
1516 mdt_object_get(info->mti_env, parent);
1519 child = mdt_object_find(info->mti_env, info->mti_mdt,
1523 if (unlikely(IS_ERR(child)))
1524 GOTO(out_parent, rc = PTR_ERR(child));
1526 rc = mdt_check_resent_lock(info, child, lhc);
1528 GOTO(out_child, rc);
1529 } else if (rc > 0) {
1530 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout*2);
1531 mdt_lock_handle_init(lhc);
1532 mdt_lock_reg_init(lhc, LCK_PR);
1535 if (!mdt_object_exists(child)) {
1536 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1538 "Object doesn't exist!\n");
1539 GOTO(out_child, rc = -ENOENT);
1542 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1543 mdt_object_exists(child) && !mdt_object_remote(child)) {
1544 struct md_attr *ma = &info->mti_attr;
1547 ma->ma_need = MA_INODE;
1548 rc = mdt_attr_get_complex(info, child, ma);
1549 if (unlikely(rc != 0))
1550 GOTO(out_child, rc);
1552 /* If the file has not been changed for some time, we
1553 * return not only a LOOKUP lock, but also an UPDATE
1554 * lock and this might save us RPC on later STAT. For
1555 * directories, it also let negative dentry cache start
1556 * working for this dir. */
1557 if (ma->ma_valid & MA_INODE &&
1558 ma->ma_attr.la_valid & LA_CTIME &&
1559 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1560 ma->ma_attr.la_ctime < cfs_time_current_sec())
1561 child_bits |= MDS_INODELOCK_UPDATE;
1564 /* layout lock must be granted in a best-effort way
1565 * for IT operations */
1566 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1567 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1568 exp_connect_layout(info->mti_exp) &&
1569 S_ISREG(lu_object_attr(&child->mot_obj)) &&
1570 !mdt_object_remote(child) && ldlm_rep != NULL) {
1571 /* try to grant layout lock for regular file. */
1577 child_bits |= MDS_INODELOCK_LAYOUT;
1578 /* try layout lock, it may fail to be granted due to
1579 * contention at LOOKUP or UPDATE */
1580 if (!mdt_object_lock_try(info, child, lhc, child_bits,
1582 child_bits &= ~MDS_INODELOCK_LAYOUT;
1583 LASSERT(child_bits != 0);
1584 rc = mdt_object_lock(info, child, lhc,
1585 child_bits, MDT_CROSS_LOCK);
1590 /* Do not enqueue the UPDATE lock from MDT(cross-MDT),
1591 * client will enqueue the lock to the remote MDT */
1592 if (mdt_object_remote(child))
1593 child_bits &= ~MDS_INODELOCK_UPDATE;
1594 rc = mdt_object_lock(info, child, lhc, child_bits,
1597 if (unlikely(rc != 0))
1598 GOTO(out_child, rc);
1601 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1603 /* finally, we can get attr for child. */
1604 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1605 rc = mdt_getattr_internal(info, child, ma_need);
1606 if (unlikely(rc != 0)) {
1607 mdt_object_unlock(info, child, lhc, 1);
1609 /* Debugging code. */
1610 LDLM_DEBUG(lock, "Returning lock to client");
1611 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1612 &lock->l_resource->lr_name),
1613 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1614 PLDLMRES(lock->l_resource),
1615 PFID(mdt_object_fid(child)));
1618 LDLM_LOCK_PUT(lock);
1622 mdt_object_put(info->mti_env, child);
1625 mdt_object_unlock(info, parent, lhp, 1);
1629 /* normal handler: should release the child lock */
1630 static int mdt_getattr_name(struct tgt_session_info *tsi)
1632 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1633 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1634 struct mdt_body *reqbody;
1635 struct mdt_body *repbody;
1639 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1640 LASSERT(reqbody != NULL);
1641 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1642 LASSERT(repbody != NULL);
1644 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
1645 repbody->mbo_eadatasize = 0;
1646 repbody->mbo_aclsize = 0;
1648 rc = mdt_init_ucred(info, reqbody);
1650 GOTO(out_shrink, rc);
1652 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1653 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1654 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1655 lhc->mlh_reg_lh.cookie = 0;
1657 mdt_exit_ucred(info);
1660 mdt_client_compatibility(info);
1661 rc2 = mdt_fix_reply(info);
1664 mdt_thread_info_fini(info);
1668 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1669 void *karg, void *uarg);
1671 static int mdt_set_info(struct tgt_session_info *tsi)
1673 struct ptlrpc_request *req = tgt_ses_req(tsi);
1676 int keylen, vallen, rc = 0;
1680 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
1682 DEBUG_REQ(D_HA, req, "no set_info key");
1683 RETURN(err_serious(-EFAULT));
1686 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
1689 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
1691 DEBUG_REQ(D_HA, req, "no set_info val");
1692 RETURN(err_serious(-EFAULT));
1695 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
1698 /* Swab any part of val you need to here */
1699 if (KEY_IS(KEY_READ_ONLY)) {
1700 spin_lock(&req->rq_export->exp_lock);
1702 *exp_connect_flags_ptr(req->rq_export) |=
1705 *exp_connect_flags_ptr(req->rq_export) &=
1706 ~OBD_CONNECT_RDONLY;
1707 spin_unlock(&req->rq_export->exp_lock);
1708 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1709 struct changelog_setinfo *cs = val;
1711 if (vallen != sizeof(*cs)) {
1712 CERROR("%s: bad changelog_clear setinfo size %d\n",
1713 tgt_name(tsi->tsi_tgt), vallen);
1716 if (ptlrpc_req_need_swab(req)) {
1717 __swab64s(&cs->cs_recno);
1718 __swab32s(&cs->cs_id);
1721 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
1729 static int mdt_readpage(struct tgt_session_info *tsi)
1731 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
1732 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
1733 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1734 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
1735 struct mdt_body *repbody;
1741 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1742 RETURN(err_serious(-ENOMEM));
1744 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
1745 if (repbody == NULL || reqbody == NULL)
1746 RETURN(err_serious(-EFAULT));
1749 * prepare @rdpg before calling lower layers and transfer itself. Here
1750 * reqbody->size contains offset of where to start to read and
1751 * reqbody->nlink contains number bytes to read.
1753 rdpg->rp_hash = reqbody->mbo_size;
1754 if (rdpg->rp_hash != reqbody->mbo_size) {
1755 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1756 rdpg->rp_hash, reqbody->mbo_size);
1760 rdpg->rp_attrs = reqbody->mbo_mode;
1761 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
1762 rdpg->rp_attrs |= LUDA_64BITHASH;
1763 rdpg->rp_count = min_t(unsigned int, reqbody->mbo_nlink,
1764 exp_max_brw_size(tsi->tsi_exp));
1765 rdpg->rp_npages = (rdpg->rp_count + PAGE_CACHE_SIZE - 1) >>
1767 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1768 if (rdpg->rp_pages == NULL)
1771 for (i = 0; i < rdpg->rp_npages; ++i) {
1772 rdpg->rp_pages[i] = alloc_page(GFP_IOFS);
1773 if (rdpg->rp_pages[i] == NULL)
1774 GOTO(free_rdpg, rc = -ENOMEM);
1777 /* call lower layers to fill allocated pages with directory data */
1778 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
1780 GOTO(free_rdpg, rc);
1782 /* send pages to client */
1783 rc = tgt_sendpage(tsi, rdpg, rc);
1788 for (i = 0; i < rdpg->rp_npages; i++)
1789 if (rdpg->rp_pages[i] != NULL)
1790 __free_page(rdpg->rp_pages[i]);
1791 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1793 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1799 static int mdt_reint_internal(struct mdt_thread_info *info,
1800 struct mdt_lock_handle *lhc,
1803 struct req_capsule *pill = info->mti_pill;
1804 struct mdt_body *repbody;
1809 rc = mdt_reint_unpack(info, op);
1811 CERROR("Can't unpack reint, rc %d\n", rc);
1812 RETURN(err_serious(rc));
1815 /* for replay (no_create) lmm is not needed, client has it already */
1816 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1817 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1820 /* llog cookies are always 0, the field is kept for compatibility */
1821 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1822 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
1824 rc = req_capsule_server_pack(pill);
1826 CERROR("Can't pack response, rc %d\n", rc);
1827 RETURN(err_serious(rc));
1830 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1831 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1833 repbody->mbo_eadatasize = 0;
1834 repbody->mbo_aclsize = 0;
1837 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1839 /* for replay no cookkie / lmm need, because client have this already */
1840 if (info->mti_spec.no_create)
1841 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1842 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1844 rc = mdt_init_ucred_reint(info);
1846 GOTO(out_shrink, rc);
1848 rc = mdt_fix_attr_ucred(info, op);
1850 GOTO(out_ucred, rc = err_serious(rc));
1852 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1853 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
1854 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1855 GOTO(out_ucred, rc);
1857 rc = mdt_reint_rec(info, lhc);
1860 mdt_exit_ucred(info);
1862 mdt_client_compatibility(info);
1863 rc2 = mdt_fix_reply(info);
1869 static long mdt_reint_opcode(struct ptlrpc_request *req,
1870 const struct req_format **fmt)
1872 struct mdt_device *mdt;
1873 struct mdt_rec_reint *rec;
1876 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
1878 opc = rec->rr_opcode;
1879 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
1880 if (opc < REINT_MAX && fmt[opc] != NULL)
1881 req_capsule_extend(&req->rq_pill, fmt[opc]);
1883 mdt = mdt_exp2dev(req->rq_export);
1884 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
1885 " rc = %d\n", req->rq_export->exp_obd->obd_name,
1886 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
1887 opc = err_serious(-EFAULT);
1890 opc = err_serious(-EFAULT);
1895 static int mdt_reint(struct tgt_session_info *tsi)
1899 static const struct req_format *reint_fmts[REINT_MAX] = {
1900 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1901 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1902 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1903 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1904 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1905 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1906 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
1907 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
1908 [REINT_MIGRATE] = &RQF_MDS_REINT_RENAME
1913 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
1915 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1917 * No lock possible here from client to pass it to reint code
1920 rc = mdt_reint_internal(info, NULL, opc);
1921 mdt_thread_info_fini(info);
1926 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1930 /* this should sync the whole device */
1931 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1933 struct dt_device *dt = mdt->mdt_bottom;
1937 rc = dt->dd_ops->dt_sync(env, dt);
1941 /* this should sync this object */
1942 static int mdt_object_sync(struct mdt_thread_info *info)
1944 struct md_object *next;
1948 if (!mdt_object_exists(info->mti_object)) {
1949 CWARN("%s: non existing object "DFID": rc = %d\n",
1950 mdt_obd_name(info->mti_mdt),
1951 PFID(mdt_object_fid(info->mti_object)), -ESTALE);
1954 next = mdt_object_child(info->mti_object);
1955 rc = mo_object_sync(info->mti_env, next);
1960 static int mdt_sync(struct tgt_session_info *tsi)
1962 struct ptlrpc_request *req = tgt_ses_req(tsi);
1963 struct req_capsule *pill = tsi->tsi_pill;
1964 struct mdt_body *body;
1969 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1970 RETURN(err_serious(-ENOMEM));
1972 if (fid_seq(&tsi->tsi_mdt_body->mbo_fid1) == 0) {
1973 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
1975 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1977 /* sync an object */
1978 rc = mdt_object_sync(info);
1980 const struct lu_fid *fid;
1981 struct lu_attr *la = &info->mti_attr.ma_attr;
1983 info->mti_attr.ma_need = MA_INODE;
1984 info->mti_attr.ma_valid = 0;
1985 rc = mdt_attr_get_complex(info, info->mti_object,
1988 body = req_capsule_server_get(pill,
1990 fid = mdt_object_fid(info->mti_object);
1991 mdt_pack_attr2body(info, body, la, fid);
1994 mdt_thread_info_fini(info);
1997 mdt_counter_incr(req, LPROC_MDT_SYNC);
2003 * Handle quota control requests to consult current usage/limit, but also
2004 * to configure quota enforcement
2006 static int mdt_quotactl(struct tgt_session_info *tsi)
2008 struct obd_export *exp = tsi->tsi_exp;
2009 struct req_capsule *pill = tsi->tsi_pill;
2010 struct obd_quotactl *oqctl, *repoqc;
2012 struct mdt_device *mdt = mdt_exp2dev(exp);
2013 struct lu_device *qmt = mdt->mdt_qmt_dev;
2014 struct lu_nodemap *nodemap = exp->exp_target_data.ted_nodemap;
2017 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
2019 RETURN(err_serious(-EPROTO));
2021 rc = req_capsule_server_pack(pill);
2023 RETURN(err_serious(rc));
2025 switch (oqctl->qc_cmd) {
2027 case LUSTRE_Q_INVALIDATE:
2028 case LUSTRE_Q_FINVALIDATE:
2032 /* deprecated, not used any more */
2033 RETURN(-EOPNOTSUPP);
2034 /* master quotactl */
2037 if (!nodemap_can_setquota(nodemap))
2042 RETURN(-EOPNOTSUPP);
2043 /* slave quotactl */
2048 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2052 /* map uid/gid for remote client */
2054 if (exp_connect_rmtclient(exp)) {
2055 struct lustre_idmap_table *idmap;
2057 idmap = exp->exp_mdt_data.med_idmap;
2059 if (unlikely(oqctl->qc_cmd != Q_GETQUOTA &&
2060 oqctl->qc_cmd != Q_GETINFO))
2063 if (oqctl->qc_type == USRQUOTA)
2064 id = lustre_idmap_lookup_uid(NULL, idmap, 0,
2066 else if (oqctl->qc_type == GRPQUOTA)
2067 id = lustre_idmap_lookup_gid(NULL, idmap, 0,
2072 if (id == CFS_IDMAP_NOTFOUND) {
2073 CDEBUG(D_QUOTA, "no mapping for id %u\n", oqctl->qc_id);
2078 if (oqctl->qc_type == USRQUOTA)
2079 id = nodemap_map_id(nodemap, NODEMAP_UID,
2080 NODEMAP_CLIENT_TO_FS, id);
2081 else if (oqctl->qc_type == GRPQUOTA)
2082 id = nodemap_map_id(nodemap, NODEMAP_UID,
2083 NODEMAP_CLIENT_TO_FS, id);
2085 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
2087 RETURN(err_serious(-EFAULT));
2089 if (oqctl->qc_id != id)
2090 swap(oqctl->qc_id, id);
2092 switch (oqctl->qc_cmd) {
2098 /* forward quotactl request to QMT */
2099 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
2104 /* slave quotactl */
2105 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
2110 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2114 if (oqctl->qc_id != id)
2115 swap(oqctl->qc_id, id);
2121 /** clone llog ctxt from child (mdd)
2122 * This allows remote llog (replicator) access.
2123 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2124 * context was originally set up, or we can handle them directly.
2125 * I choose the latter, but that means I need any llog
2126 * contexts set up by child to be accessable by the mdt. So we clone the
2127 * context into our context list here.
2129 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2132 struct md_device *next = mdt->mdt_child;
2133 struct llog_ctxt *ctxt;
2136 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2139 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2140 if (rc || ctxt == NULL) {
2144 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2146 CERROR("Can't set mdt ctxt %d\n", rc);
2151 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2152 struct mdt_device *mdt, int idx)
2154 struct llog_ctxt *ctxt;
2156 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2159 /* Put once for the get we just did, and once for the clone */
2160 llog_ctxt_put(ctxt);
2161 llog_ctxt_put(ctxt);
2166 * sec context handlers
2168 static int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
2172 rc = mdt_handle_idmap(tsi);
2174 struct ptlrpc_request *req = tgt_ses_req(tsi);
2177 opc = lustre_msg_get_opc(req->rq_reqmsg);
2178 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
2179 sptlrpc_svc_ctx_invalidate(req);
2182 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2188 * quota request handlers
2190 static int mdt_quota_dqacq(struct tgt_session_info *tsi)
2192 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2193 struct lu_device *qmt = mdt->mdt_qmt_dev;
2198 RETURN(err_serious(-EOPNOTSUPP));
2200 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
2204 struct mdt_object *mdt_object_new(const struct lu_env *env,
2205 struct mdt_device *d,
2206 const struct lu_fid *f)
2208 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2209 struct lu_object *o;
2210 struct mdt_object *m;
2213 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2214 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
2215 if (unlikely(IS_ERR(o)))
2216 m = (struct mdt_object *)o;
2222 struct mdt_object *mdt_object_find(const struct lu_env *env,
2223 struct mdt_device *d,
2224 const struct lu_fid *f)
2226 struct lu_object *o;
2227 struct mdt_object *m;
2230 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2231 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
2232 if (unlikely(IS_ERR(o)))
2233 m = (struct mdt_object *)o;
2241 * Asyncronous commit for mdt device.
2243 * Pass asynchonous commit call down the MDS stack.
2245 * \param env environment
2246 * \param mdt the mdt device
2248 static void mdt_device_commit_async(const struct lu_env *env,
2249 struct mdt_device *mdt)
2251 struct dt_device *dt = mdt->mdt_bottom;
2254 rc = dt->dd_ops->dt_commit_async(env, dt);
2255 if (unlikely(rc != 0))
2256 CWARN("%s: async commit start failed: rc = %d\n",
2257 mdt_obd_name(mdt), rc);
2261 * Mark the lock as "synchonous".
2263 * Mark the lock to deffer transaction commit to the unlock time.
2265 * \param lock the lock to mark as "synchonous"
2267 * \see mdt_is_lock_sync
2268 * \see mdt_save_lock
2270 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2272 lock->l_ast_data = (void*)1;
2276 * Check whehter the lock "synchonous" or not.
2278 * \param lock the lock to check
2279 * \retval 1 the lock is "synchonous"
2280 * \retval 0 the lock isn't "synchronous"
2282 * \see mdt_set_lock_sync
2283 * \see mdt_save_lock
2285 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2287 return lock->l_ast_data != NULL;
2291 * Blocking AST for mdt locks.
2293 * Starts transaction commit if in case of COS lock conflict or
2294 * deffers such a commit to the mdt_save_lock.
2296 * \param lock the lock which blocks a request or cancelling lock
2297 * \param desc unused
2298 * \param data unused
2299 * \param flag indicates whether this cancelling or blocking callback
2301 * \see ldlm_blocking_ast_nocheck
2303 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2304 void *data, int flag)
2306 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2307 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2311 if (flag == LDLM_CB_CANCELING)
2313 lock_res_and_lock(lock);
2314 if (lock->l_blocking_ast != mdt_blocking_ast) {
2315 unlock_res_and_lock(lock);
2318 if (mdt_cos_is_enabled(mdt) &&
2319 lock->l_req_mode & (LCK_PW | LCK_EX) &&
2320 lock->l_blocking_lock != NULL &&
2321 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
2322 mdt_set_lock_sync(lock);
2324 rc = ldlm_blocking_ast_nocheck(lock);
2326 /* There is no lock conflict if l_blocking_lock == NULL,
2327 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2328 * when the last reference to a local lock was released */
2329 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2332 rc = lu_env_init(&env, LCT_LOCAL);
2333 if (unlikely(rc != 0))
2334 CWARN("%s: lu_env initialization failed, cannot "
2335 "start asynchronous commit: rc = %d\n",
2338 mdt_device_commit_async(&env, mdt);
2344 /* Used for cross-MDT lock */
2345 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2346 void *data, int flag)
2348 struct lustre_handle lockh;
2352 case LDLM_CB_BLOCKING:
2353 ldlm_lock2handle(lock, &lockh);
2354 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
2356 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2360 case LDLM_CB_CANCELING:
2361 LDLM_DEBUG(lock, "Revoke remote lock\n");
2369 int mdt_check_resent_lock(struct mdt_thread_info *info,
2370 struct mdt_object *mo,
2371 struct mdt_lock_handle *lhc)
2373 /* the lock might already be gotten in ldlm_handle_enqueue() */
2374 if (unlikely(lustre_handle_is_used(&lhc->mlh_reg_lh))) {
2375 struct ptlrpc_request *req = mdt_info_req(info);
2376 struct ldlm_lock *lock;
2378 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
2379 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
2381 /* Lock is pinned by ldlm_handle_enqueue0() as it is
2382 * a resend case, however, it could be already destroyed
2383 * due to client eviction or a raced cancel RPC. */
2384 LDLM_DEBUG_NOLOCK("Invalid lock handle "LPX64"\n",
2385 lhc->mlh_reg_lh.cookie);
2389 if (!fid_res_name_eq(mdt_object_fid(mo),
2390 &lock->l_resource->lr_name)) {
2391 CWARN("%s: Although resent, but still not "
2392 "get child lock:"DFID"\n",
2393 info->mti_exp->exp_obd->obd_name,
2394 PFID(mdt_object_fid(mo)));
2395 LDLM_LOCK_PUT(lock);
2398 LDLM_LOCK_PUT(lock);
2404 int mdt_remote_object_lock(struct mdt_thread_info *mti,
2405 struct mdt_object *o, const struct lu_fid *fid,
2406 struct lustre_handle *lh, ldlm_mode_t mode,
2409 struct ldlm_enqueue_info *einfo = &mti->mti_einfo;
2410 ldlm_policy_data_t *policy = &mti->mti_policy;
2411 struct ldlm_res_id *res_id = &mti->mti_res_id;
2415 LASSERT(mdt_object_remote(o));
2417 LASSERT(ibits == MDS_INODELOCK_UPDATE);
2419 fid_build_reg_res_name(fid, res_id);
2421 memset(einfo, 0, sizeof(*einfo));
2422 einfo->ei_type = LDLM_IBITS;
2423 einfo->ei_mode = mode;
2424 einfo->ei_cb_bl = mdt_remote_blocking_ast;
2425 einfo->ei_cb_cp = ldlm_completion_ast;
2426 einfo->ei_enq_slave = 0;
2427 einfo->ei_res_id = res_id;
2429 memset(policy, 0, sizeof(*policy));
2430 policy->l_inodebits.bits = ibits;
2432 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
2437 static int mdt_object_local_lock(struct mdt_thread_info *info,
2438 struct mdt_object *o,
2439 struct mdt_lock_handle *lh, __u64 ibits,
2440 bool nonblock, int locality)
2442 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2443 ldlm_policy_data_t *policy = &info->mti_policy;
2444 struct ldlm_res_id *res_id = &info->mti_res_id;
2449 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2450 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2451 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2452 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2454 /* Only enqueue LOOKUP lock for remote object */
2455 if (mdt_object_remote(o))
2456 LASSERT(ibits == MDS_INODELOCK_LOOKUP);
2458 if (lh->mlh_type == MDT_PDO_LOCK) {
2459 /* check for exists after object is locked */
2460 if (mdt_object_exists(o) == 0) {
2461 /* Non-existent object shouldn't have PDO lock */
2464 /* Non-dir object shouldn't have PDO lock */
2465 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
2470 memset(policy, 0, sizeof(*policy));
2471 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2473 dlmflags = LDLM_FL_ATOMIC_CB;
2475 dlmflags |= LDLM_FL_BLOCK_NOWAIT;
2478 * Take PDO lock on whole directory and build correct @res_id for lock
2479 * on part of directory.
2481 if (lh->mlh_pdo_hash != 0) {
2482 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2483 mdt_lock_pdo_mode(info, o, lh);
2484 if (lh->mlh_pdo_mode != LCK_NL) {
2486 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2487 * is never going to be sent to client and we do not
2488 * want it slowed down due to possible cancels.
2490 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2491 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2492 policy, res_id, dlmflags,
2493 info->mti_exp == NULL ? NULL :
2494 &info->mti_exp->exp_handle.h_cookie);
2495 if (unlikely(rc != 0))
2496 GOTO(out_unlock, rc);
2500 * Finish res_id initializing by name hash marking part of
2501 * directory which is taking modification.
2503 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2506 policy->l_inodebits.bits = ibits;
2509 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2510 * going to be sent to client. If it is - mdt_intent_policy() path will
2511 * fix it up and turn FL_LOCAL flag off.
2513 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2514 res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
2515 info->mti_exp == NULL ? NULL :
2516 &info->mti_exp->exp_handle.h_cookie);
2519 mdt_object_unlock(info, o, lh, 1);
2520 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2521 lh->mlh_pdo_hash != 0 &&
2522 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
2523 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2529 mdt_object_lock_internal(struct mdt_thread_info *info, struct mdt_object *o,
2530 struct mdt_lock_handle *lh, __u64 ibits,
2531 bool nonblock, int locality)
2536 if (!mdt_object_remote(o))
2537 return mdt_object_local_lock(info, o, lh, ibits, nonblock,
2540 if (locality == MDT_LOCAL_LOCK) {
2541 CERROR("%s: try to get local lock for remote object"
2542 DFID".\n", mdt_obd_name(info->mti_mdt),
2543 PFID(mdt_object_fid(o)));
2547 /* XXX do not support PERM/LAYOUT/XATTR lock for remote object yet */
2548 ibits &= ~(MDS_INODELOCK_PERM | MDS_INODELOCK_LAYOUT |
2549 MDS_INODELOCK_XATTR);
2550 if (ibits & MDS_INODELOCK_UPDATE) {
2551 /* Sigh, PDO needs to enqueue 2 locks right now, but
2552 * enqueue RPC can only request 1 lock, to avoid extra
2553 * RPC, so it will instead enqueue EX lock for remote
2554 * object anyway XXX*/
2555 if (lh->mlh_type == MDT_PDO_LOCK &&
2556 lh->mlh_pdo_hash != 0) {
2557 CDEBUG(D_INFO, "%s: "DFID" convert PDO lock to"
2558 "EX lock.\n", mdt_obd_name(info->mti_mdt),
2559 PFID(mdt_object_fid(o)));
2560 lh->mlh_pdo_hash = 0;
2561 lh->mlh_rreg_mode = LCK_EX;
2562 lh->mlh_type = MDT_REG_LOCK;
2564 rc = mdt_remote_object_lock(info, o, mdt_object_fid(o),
2567 MDS_INODELOCK_UPDATE);
2572 /* Only enqueue LOOKUP lock for remote object */
2573 if (ibits & MDS_INODELOCK_LOOKUP) {
2574 rc = mdt_object_local_lock(info, o, lh,
2575 MDS_INODELOCK_LOOKUP,
2576 nonblock, locality);
2584 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2585 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2587 return mdt_object_lock_internal(info, o, lh, ibits, false, locality);
2590 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
2591 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2593 struct mdt_lock_handle tmp = *lh;
2596 rc = mdt_object_lock_internal(info, o, &tmp, ibits, true, locality);
2604 * Save a lock within request object.
2606 * Keep the lock referenced until whether client ACK or transaction
2607 * commit happens or release the lock immediately depending on input
2608 * parameters. If COS is ON, a write lock is converted to COS lock
2611 * \param info thead info object
2612 * \param h lock handle
2613 * \param mode lock mode
2614 * \param decref force immediate lock releasing
2617 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2618 ldlm_mode_t mode, int decref)
2622 if (lustre_handle_is_used(h)) {
2623 if (decref || !info->mti_has_trans ||
2624 !(mode & (LCK_PW | LCK_EX))){
2625 mdt_fid_unlock(h, mode);
2627 struct mdt_device *mdt = info->mti_mdt;
2628 struct ldlm_lock *lock = ldlm_handle2lock(h);
2629 struct ptlrpc_request *req = mdt_info_req(info);
2632 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2634 /* there is no request if mdt_object_unlock() is called
2635 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
2636 if (likely(req != NULL)) {
2637 CDEBUG(D_HA, "request = %p reply state = %p"
2638 " transno = "LPD64"\n", req,
2639 req->rq_reply_state, req->rq_transno);
2640 if (mdt_cos_is_enabled(mdt)) {
2642 ldlm_lock_downgrade(lock, LCK_COS);
2645 ptlrpc_save_lock(req, h, mode, no_ack);
2647 ldlm_lock_decref(h, mode);
2649 if (mdt_is_lock_sync(lock)) {
2650 CDEBUG(D_HA, "found sync-lock,"
2651 " async commit started\n");
2652 mdt_device_commit_async(info->mti_env,
2655 LDLM_LOCK_PUT(lock);
2664 * Unlock mdt object.
2666 * Immeditely release the regular lock and the PDO lock or save the
2667 * lock in reqeuest and keep them referenced until client ACK or
2668 * transaction commit.
2670 * \param info thread info object
2671 * \param o mdt object
2672 * \param lh mdt lock handle referencing regular and PDO locks
2673 * \param decref force immediate lock releasing
2675 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2676 struct mdt_lock_handle *lh, int decref)
2680 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2681 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2683 if (lustre_handle_is_used(&lh->mlh_rreg_lh))
2684 ldlm_lock_decref(&lh->mlh_rreg_lh, lh->mlh_rreg_mode);
2689 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2690 const struct lu_fid *f,
2691 struct mdt_lock_handle *lh,
2694 struct mdt_object *o;
2696 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2700 rc = mdt_object_lock(info, o, lh, ibits,
2703 mdt_object_put(info->mti_env, o);
2710 void mdt_object_unlock_put(struct mdt_thread_info * info,
2711 struct mdt_object * o,
2712 struct mdt_lock_handle *lh,
2715 mdt_object_unlock(info, o, lh, decref);
2716 mdt_object_put(info->mti_env, o);
2720 * Generic code handling requests that have struct mdt_body passed in:
2722 * - extract mdt_body from request and save it in @info, if present;
2724 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2727 * - if HABEO_CORPUS flag is set for this request type check whether object
2728 * actually exists on storage (lu_object_exists()).
2731 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2733 const struct mdt_body *body;
2734 struct mdt_object *obj;
2735 const struct lu_env *env;
2736 struct req_capsule *pill;
2740 env = info->mti_env;
2741 pill = info->mti_pill;
2743 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2747 if (!(body->mbo_valid & OBD_MD_FLID))
2750 if (!fid_is_sane(&body->mbo_fid1)) {
2751 CERROR("Invalid fid: "DFID"\n", PFID(&body->mbo_fid1));
2756 * Do not get size or any capa fields before we check that request
2757 * contains capa actually. There are some requests which do not, for
2758 * instance MDS_IS_SUBDIR.
2760 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2761 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2762 mdt_set_capainfo(info, 0, &body->mbo_fid1,
2763 req_capsule_client_get(pill, &RMF_CAPA1));
2765 obj = mdt_object_find(env, info->mti_mdt, &body->mbo_fid1);
2767 if ((flags & HABEO_CORPUS) &&
2768 !mdt_object_exists(obj)) {
2769 mdt_object_put(env, obj);
2770 /* for capability renew ENOENT will be handled in
2772 if (body->mbo_valid & OBD_MD_FLOSSCAPA)
2777 info->mti_object = obj;
2786 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2788 struct req_capsule *pill = info->mti_pill;
2792 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2793 rc = mdt_body_unpack(info, flags);
2797 if (rc == 0 && (flags & HABEO_REFERO)) {
2799 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2800 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2802 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2803 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
2806 rc = req_capsule_server_pack(pill);
2811 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2813 struct md_device *next = m->mdt_child;
2815 return next->md_ops->mdo_init_capa_ctxt(env, next,
2816 m->mdt_lut.lut_mds_capa,
2817 m->mdt_capa_timeout,
2822 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2824 lh->mlh_type = MDT_NUL_LOCK;
2825 lh->mlh_reg_lh.cookie = 0ull;
2826 lh->mlh_reg_mode = LCK_MINMODE;
2827 lh->mlh_pdo_lh.cookie = 0ull;
2828 lh->mlh_pdo_mode = LCK_MINMODE;
2829 lh->mlh_rreg_lh.cookie = 0ull;
2830 lh->mlh_rreg_mode = LCK_MINMODE;
2833 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2835 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2836 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2840 * Initialize fields of struct mdt_thread_info. Other fields are left in
2841 * uninitialized state, because it's too expensive to zero out whole
2842 * mdt_thread_info (> 1K) on each request arrival.
2844 void mdt_thread_info_init(struct ptlrpc_request *req,
2845 struct mdt_thread_info *info)
2849 info->mti_pill = &req->rq_pill;
2852 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2853 mdt_lock_handle_init(&info->mti_lh[i]);
2855 /* mdt device: it can be NULL while CONNECT */
2856 if (req->rq_export) {
2857 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2858 info->mti_exp = req->rq_export;
2860 info->mti_mdt = NULL;
2861 info->mti_env = req->rq_svc_thread->t_env;
2862 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2864 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2865 info->mti_big_buf = LU_BUF_NULL;
2866 info->mti_body = NULL;
2867 info->mti_object = NULL;
2868 info->mti_dlm_req = NULL;
2869 info->mti_has_trans = 0;
2870 info->mti_cross_ref = 0;
2871 info->mti_opdata = 0;
2872 info->mti_big_lmm_used = 0;
2874 info->mti_spec.no_create = 0;
2875 info->mti_spec.sp_rm_entry = 0;
2876 info->mti_spec.sp_permitted = 0;
2878 info->mti_spec.u.sp_ea.eadata = NULL;
2879 info->mti_spec.u.sp_ea.eadatalen = 0;
2882 void mdt_thread_info_fini(struct mdt_thread_info *info)
2886 if (info->mti_object != NULL) {
2887 mdt_object_put(info->mti_env, info->mti_object);
2888 info->mti_object = NULL;
2891 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2892 mdt_lock_handle_fini(&info->mti_lh[i]);
2893 info->mti_env = NULL;
2894 info->mti_pill = NULL;
2895 info->mti_exp = NULL;
2897 if (unlikely(info->mti_big_buf.lb_buf != NULL))
2898 lu_buf_free(&info->mti_big_buf);
2901 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
2903 struct mdt_thread_info *mti;
2904 struct lustre_capa *lc;
2906 mti = mdt_th_info(tsi->tsi_env);
2907 LASSERT(mti != NULL);
2909 mdt_thread_info_init(tgt_ses_req(tsi), mti);
2910 if (tsi->tsi_corpus != NULL) {
2911 struct req_capsule *pill = tsi->tsi_pill;
2913 mti->mti_object = mdt_obj(tsi->tsi_corpus);
2914 lu_object_get(tsi->tsi_corpus);
2917 * XXX: must be part of tgt_mdt_body_unpack but moved here
2918 * due to mdt_set_capainfo().
2920 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2921 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT) > 0) {
2922 lc = req_capsule_client_get(pill, &RMF_CAPA1);
2923 mdt_set_capainfo(mti, 0, &tsi->tsi_mdt_body->mbo_fid1,
2927 mti->mti_body = tsi->tsi_mdt_body;
2928 mti->mti_dlm_req = tsi->tsi_dlm_req;
2933 static int mdt_tgt_connect(struct tgt_session_info *tsi)
2935 struct ptlrpc_request *req = tgt_ses_req(tsi);
2940 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_DELAY_CONDITIONAL) &&
2942 tsi2mdt_info(tsi)->mti_mdt->mdt_seq_site.ss_node_id)
2943 schedule_timeout_and_set_state(TASK_UNINTERRUPTIBLE,
2944 msecs_to_jiffies(3 * MSEC_PER_SEC));
2946 rc = tgt_connect(tsi);
2950 rc = mdt_init_idmap(tsi);
2955 obd_disconnect(class_export_get(req->rq_export));
2974 static int mdt_intent_getattr(enum mdt_it_code opcode,
2975 struct mdt_thread_info *info,
2976 struct ldlm_lock **,
2979 static int mdt_intent_getxattr(enum mdt_it_code opcode,
2980 struct mdt_thread_info *info,
2981 struct ldlm_lock **lockp,
2984 static int mdt_intent_layout(enum mdt_it_code opcode,
2985 struct mdt_thread_info *info,
2986 struct ldlm_lock **,
2988 static int mdt_intent_reint(enum mdt_it_code opcode,
2989 struct mdt_thread_info *info,
2990 struct ldlm_lock **,
2993 static struct mdt_it_flavor {
2994 const struct req_format *it_fmt;
2996 int (*it_act)(enum mdt_it_code ,
2997 struct mdt_thread_info *,
2998 struct ldlm_lock **,
3001 } mdt_it_flavor[] = {
3003 .it_fmt = &RQF_LDLM_INTENT,
3004 /*.it_flags = HABEO_REFERO,*/
3006 .it_act = mdt_intent_reint,
3007 .it_reint = REINT_OPEN
3010 .it_fmt = &RQF_LDLM_INTENT,
3012 * OCREAT is not a MUTABOR request as if the file
3014 * We do the extra check of OBD_CONNECT_RDONLY in
3015 * mdt_reint_open() when we really need to create
3019 .it_act = mdt_intent_reint,
3020 .it_reint = REINT_OPEN
3023 .it_fmt = &RQF_LDLM_INTENT,
3024 .it_flags = MUTABOR,
3025 .it_act = mdt_intent_reint,
3026 .it_reint = REINT_CREATE
3028 [MDT_IT_GETATTR] = {
3029 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3030 .it_flags = HABEO_REFERO,
3031 .it_act = mdt_intent_getattr
3033 [MDT_IT_READDIR] = {
3039 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3040 .it_flags = HABEO_REFERO,
3041 .it_act = mdt_intent_getattr
3044 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
3045 .it_flags = MUTABOR,
3047 .it_reint = REINT_UNLINK
3051 .it_flags = MUTABOR,
3054 [MDT_IT_GETXATTR] = {
3055 .it_fmt = &RQF_LDLM_INTENT_GETXATTR,
3056 .it_flags = HABEO_CORPUS,
3057 .it_act = mdt_intent_getxattr
3060 .it_fmt = &RQF_LDLM_INTENT_LAYOUT,
3062 .it_act = mdt_intent_layout
3067 mdt_intent_lock_replace(struct mdt_thread_info *info,
3068 struct ldlm_lock **lockp,
3069 struct mdt_lock_handle *lh,
3072 struct ptlrpc_request *req = mdt_info_req(info);
3073 struct ldlm_lock *lock = *lockp;
3074 struct ldlm_lock *new_lock;
3076 /* If possible resent found a lock, @lh is set to its handle */
3077 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3079 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3080 lh->mlh_reg_lh.cookie = 0;
3084 LASSERTF(new_lock != NULL,
3085 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
3088 * If we've already given this lock to a client once, then we should
3089 * have no readers or writers. Otherwise, we should have one reader
3090 * _or_ writer ref (which will be zeroed below) before returning the
3093 if (new_lock->l_export == req->rq_export) {
3094 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3096 LASSERT(new_lock->l_export == NULL);
3097 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3102 if (new_lock->l_export == req->rq_export) {
3104 * Already gave this to the client, which means that we
3105 * reconstructed a reply.
3107 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3110 LDLM_LOCK_RELEASE(new_lock);
3111 lh->mlh_reg_lh.cookie = 0;
3112 RETURN(ELDLM_LOCK_REPLACED);
3116 * Fixup the lock to be given to the client.
3118 lock_res_and_lock(new_lock);
3119 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3120 * possible blocking AST. */
3121 while (new_lock->l_readers > 0) {
3122 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3123 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3124 new_lock->l_readers--;
3126 while (new_lock->l_writers > 0) {
3127 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3128 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3129 new_lock->l_writers--;
3132 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3133 new_lock->l_blocking_ast = lock->l_blocking_ast;
3134 new_lock->l_completion_ast = lock->l_completion_ast;
3135 new_lock->l_remote_handle = lock->l_remote_handle;
3136 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3138 unlock_res_and_lock(new_lock);
3140 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3141 &new_lock->l_remote_handle,
3142 &new_lock->l_exp_hash);
3144 LDLM_LOCK_RELEASE(new_lock);
3145 lh->mlh_reg_lh.cookie = 0;
3147 RETURN(ELDLM_LOCK_REPLACED);
3150 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3151 struct ldlm_lock *new_lock,
3152 struct mdt_lock_handle *lh,
3155 struct ptlrpc_request *req = mdt_info_req(info);
3156 struct ldlm_request *dlmreq;
3158 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3161 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3163 /* Check if this is a resend case (MSG_RESENT is set on RPC) and a
3164 * lock was found by ldlm_handle_enqueue(); if so @lh must be
3166 if (flags & LDLM_FL_RESENT) {
3167 lh->mlh_reg_lh.cookie = new_lock->l_handle.h_cookie;
3168 lh->mlh_reg_mode = new_lock->l_granted_mode;
3170 LDLM_DEBUG(new_lock, "Restoring lock cookie");
3171 DEBUG_REQ(D_DLMTRACE, req, "restoring lock cookie "LPX64,
3172 lh->mlh_reg_lh.cookie);
3177 * If the xid matches, then we know this is a resent request, and allow
3178 * it. (It's probably an OPEN, for which we don't send a lock.
3180 if (req_xid_is_last(req))
3184 * This remote handle isn't enqueued, so we never received or processed
3185 * this request. Clear MSG_RESENT, because it can be handled like any
3186 * normal request now.
3188 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3190 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
3191 dlmreq->lock_handle[0].cookie);
3194 static int mdt_intent_getxattr(enum mdt_it_code opcode,
3195 struct mdt_thread_info *info,
3196 struct ldlm_lock **lockp,
3199 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3200 struct ldlm_reply *ldlm_rep = NULL;
3204 * Initialize lhc->mlh_reg_lh either from a previously granted lock
3205 * (for the resend case) or a new lock. Below we will use it to
3206 * replace the original lock.
3208 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3209 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3210 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
3211 rc = mdt_object_lock(info, info->mti_object, lhc,
3212 MDS_INODELOCK_XATTR,
3218 grc = mdt_getxattr(info);
3220 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3222 if (mdt_info_req(info)->rq_repmsg != NULL)
3223 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3224 if (ldlm_rep == NULL)
3225 RETURN(err_serious(-EFAULT));
3227 ldlm_rep->lock_policy_res2 = grc;
3232 static int mdt_intent_getattr(enum mdt_it_code opcode,
3233 struct mdt_thread_info *info,
3234 struct ldlm_lock **lockp,
3237 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3239 struct ldlm_reply *ldlm_rep;
3240 struct mdt_body *reqbody;
3241 struct mdt_body *repbody;
3245 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3248 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3251 info->mti_cross_ref = !!(reqbody->mbo_valid & OBD_MD_FLCROSSREF);
3252 repbody->mbo_eadatasize = 0;
3253 repbody->mbo_aclsize = 0;
3257 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
3259 case MDT_IT_GETATTR:
3260 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
3264 CERROR("Unsupported intent (%d)\n", opcode);
3265 GOTO(out_shrink, rc = -EINVAL);
3268 rc = mdt_init_ucred(info, reqbody);
3270 GOTO(out_shrink, rc);
3272 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3273 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3275 /* Get lock from request for possible resent case. */
3276 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3278 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3279 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3281 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3282 ldlm_rep->lock_policy_res2 = 0;
3283 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3284 ldlm_rep->lock_policy_res2) {
3285 lhc->mlh_reg_lh.cookie = 0ull;
3286 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3289 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3292 mdt_exit_ucred(info);
3294 mdt_client_compatibility(info);
3295 rc2 = mdt_fix_reply(info);
3301 static int mdt_intent_layout(enum mdt_it_code opcode,
3302 struct mdt_thread_info *info,
3303 struct ldlm_lock **lockp,
3306 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_LAYOUT];
3307 struct layout_intent *layout;
3309 struct mdt_object *obj = NULL;
3313 if (opcode != MDT_IT_LAYOUT) {
3314 CERROR("%s: Unknown intent (%d)\n", mdt_obd_name(info->mti_mdt),
3319 fid = &info->mti_tmp_fid2;
3320 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
3322 /* Get lock from request for possible resent case. */
3323 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3325 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
3327 RETURN(PTR_ERR(obj));
3329 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
3330 /* get the length of lsm */
3331 rc = mdt_attr_get_eabuf_size(info, obj);
3333 mdt_object_put(info->mti_env, obj);
3337 if (rc > info->mti_mdt->mdt_max_mdsize)
3338 info->mti_mdt->mdt_max_mdsize = rc;
3341 mdt_object_put(info->mti_env, obj);
3343 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
3344 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER, rc);
3345 rc = req_capsule_server_pack(info->mti_pill);
3349 if (lustre_handle_is_used(&lhc->mlh_reg_lh))
3350 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3352 layout = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
3353 LASSERT(layout != NULL);
3354 if (layout->li_opc == LAYOUT_INTENT_ACCESS)
3355 /* return to normal/resent ldlm handling */
3358 CERROR("%s: Unsupported layout intent (%d)\n",
3359 mdt_obd_name(info->mti_mdt), layout->li_opc);
3363 static int mdt_intent_reint(enum mdt_it_code opcode,
3364 struct mdt_thread_info *info,
3365 struct ldlm_lock **lockp,
3368 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3369 struct ldlm_reply *rep = NULL;
3373 static const struct req_format *intent_fmts[REINT_MAX] = {
3374 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3375 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3380 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
3384 if (mdt_it_flavor[opcode].it_reint != opc) {
3385 CERROR("Reint code %ld doesn't match intent: %d\n",
3387 RETURN(err_serious(-EPROTO));
3390 /* Get lock from request for possible resent case. */
3391 mdt_intent_fixup_resent(info, *lockp, lhc, flags);
3393 rc = mdt_reint_internal(info, lhc, opc);
3395 /* Check whether the reply has been packed successfully. */
3396 if (mdt_info_req(info)->rq_repmsg != NULL)
3397 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3399 RETURN(err_serious(-EFAULT));
3401 /* MDC expects this in any case */
3403 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3405 /* the open lock or the lock for cross-ref object should be
3406 * returned to the client */
3407 if (lustre_handle_is_used(&lhc->mlh_reg_lh) &&
3408 (rc == 0 || rc == -MDT_EREMOTE_OPEN)) {
3409 rep->lock_policy_res2 = 0;
3410 rc = mdt_intent_lock_replace(info, lockp, lhc, flags);
3414 rep->lock_policy_res2 = clear_serious(rc);
3416 if (rep->lock_policy_res2 == -ENOENT &&
3417 mdt_get_disposition(rep, DISP_LOOKUP_NEG))
3418 rep->lock_policy_res2 = 0;
3420 lhc->mlh_reg_lh.cookie = 0ull;
3421 if (rc == -ENOTCONN || rc == -ENODEV ||
3422 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3424 * If it is the disconnect error (ENODEV & ENOCONN), the error
3425 * will be returned by rq_status, and client at ptlrpc layer
3426 * will detect this, then disconnect, reconnect the import
3427 * immediately, instead of impacting the following the rpc.
3432 * For other cases, the error will be returned by intent, and client
3433 * will retrieve the result from intent.
3435 RETURN(ELDLM_LOCK_ABORTED);
3438 static int mdt_intent_code(long itcode)
3446 case IT_OPEN|IT_CREAT:
3453 rc = MDT_IT_READDIR;
3456 rc = MDT_IT_GETATTR;
3468 rc = MDT_IT_GETXATTR;
3473 case IT_QUOTA_DQACQ:
3478 CERROR("Unknown intent opcode: %ld\n", itcode);
3485 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
3486 struct ldlm_lock **lockp, __u64 flags)
3488 struct req_capsule *pill = info->mti_pill;
3489 struct ptlrpc_request *req = mdt_info_req(info);
3490 struct mdt_it_flavor *flv;
3495 opc = mdt_intent_code(itopc);
3499 if (opc == MDT_IT_QUOTA) {
3500 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
3503 RETURN(-EOPNOTSUPP);
3505 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
3506 /* pass the request to quota master */
3507 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
3508 mdt_info_req(info), lockp,
3513 flv = &mdt_it_flavor[opc];
3514 if (flv->it_fmt != NULL)
3515 req_capsule_extend(pill, flv->it_fmt);
3517 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
3521 if (flv->it_flags & MUTABOR &&
3522 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
3525 if (flv->it_act != NULL) {
3526 struct ldlm_reply *rep;
3528 /* execute policy */
3529 rc = flv->it_act(opc, info, lockp, flags);
3531 /* Check whether the reply has been packed successfully. */
3532 if (req->rq_repmsg != NULL) {
3533 rep = req_capsule_server_get(info->mti_pill,
3535 rep->lock_policy_res2 =
3536 ptlrpc_status_hton(rep->lock_policy_res2);
3543 static int mdt_intent_policy(struct ldlm_namespace *ns,
3544 struct ldlm_lock **lockp, void *req_cookie,
3545 ldlm_mode_t mode, __u64 flags, void *data)
3547 struct tgt_session_info *tsi;
3548 struct mdt_thread_info *info;
3549 struct ptlrpc_request *req = req_cookie;
3550 struct ldlm_intent *it;
3551 struct req_capsule *pill;
3556 LASSERT(req != NULL);
3558 tsi = tgt_ses_info(req->rq_svc_thread->t_env);
3560 info = tsi2mdt_info(tsi);
3561 LASSERT(info != NULL);
3562 pill = info->mti_pill;
3563 LASSERT(pill->rc_req == req);
3565 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
3566 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
3567 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
3569 rc = mdt_intent_opc(it->opc, info, lockp, flags);
3573 /* Lock without inodebits makes no sense and will oops
3574 * later in ldlm. Let's check it now to see if we have
3575 * ibits corrupted somewhere in mdt_intent_opc().
3576 * The case for client miss to set ibits has been
3577 * processed by others. */
3578 LASSERT(ergo(info->mti_dlm_req->lock_desc.l_resource.\
3579 lr_type == LDLM_IBITS,
3580 info->mti_dlm_req->lock_desc.\
3581 l_policy_data.l_inodebits.bits != 0));
3583 rc = err_serious(-EFAULT);
3585 /* No intent was provided */
3586 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
3587 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
3588 rc = req_capsule_server_pack(pill);
3590 rc = err_serious(rc);
3592 mdt_thread_info_fini(info);
3596 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
3598 struct seq_server_site *ss = mdt_seq_site(mdt);
3600 if (ss->ss_node_id == 0)
3603 if (ss->ss_client_seq != NULL) {
3604 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
3605 ss->ss_client_seq->lcs_exp = NULL;
3608 if (ss->ss_server_fld != NULL) {
3609 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
3610 ss->ss_server_fld->lsf_control_exp = NULL;
3614 static void mdt_seq_fini_cli(struct mdt_device *mdt)
3616 struct seq_server_site *ss = mdt_seq_site(mdt);
3621 if (ss->ss_server_seq != NULL)
3622 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
3625 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
3627 mdt_seq_fini_cli(mdt);
3628 mdt_deregister_seq_exp(mdt);
3630 return seq_site_fini(env, mdt_seq_site(mdt));
3634 * It will retrieve its FLDB entries from MDT0, and it only happens
3635 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
3636 * and it needs to refresh FLDB from the MDT0.
3638 static int mdt_register_lwp_callback(void *data)
3641 struct mdt_device *mdt = data;
3642 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
3646 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
3648 if (!likely(fld->lsf_new))
3651 rc = lu_env_init(&env, LCT_MD_THREAD);
3653 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
3657 rc = fld_update_from_controller(&env, fld);
3659 CERROR("%s: cannot update controller: rc = %d\n",
3660 mdt_obd_name(mdt), rc);
3668 static int mdt_register_seq_exp(struct mdt_device *mdt)
3670 struct seq_server_site *ss = mdt_seq_site(mdt);
3671 char *lwp_name = NULL;
3674 if (ss->ss_node_id == 0)
3677 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
3678 if (lwp_name == NULL)
3679 GOTO(out_free, rc = -ENOMEM);
3681 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
3685 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
3690 rc = lustre_register_lwp_item(lwp_name,
3691 &ss->ss_server_fld->lsf_control_exp,
3692 mdt_register_lwp_callback, mdt);
3694 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
3695 ss->ss_client_seq->lcs_exp = NULL;
3699 if (lwp_name != NULL)
3700 OBD_FREE(lwp_name, MAX_OBD_NAME);
3706 * Init client sequence manager which is used by local MDS to talk to sequence
3707 * controller on remote node.
3709 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
3711 struct seq_server_site *ss = mdt_seq_site(mdt);
3716 /* check if this is adding the first MDC and controller is not yet
3718 OBD_ALLOC_PTR(ss->ss_client_seq);
3719 if (ss->ss_client_seq == NULL)
3722 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3723 if (prefix == NULL) {
3724 OBD_FREE_PTR(ss->ss_client_seq);
3725 ss->ss_client_seq = NULL;
3729 /* Note: seq_client_fini will be called in seq_site_fini */
3730 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
3731 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
3732 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
3734 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3736 OBD_FREE_PTR(ss->ss_client_seq);
3737 ss->ss_client_seq = NULL;
3741 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
3746 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
3748 struct seq_server_site *ss;
3752 ss = mdt_seq_site(mdt);
3753 /* init sequence controller server(MDT0) */
3754 if (ss->ss_node_id == 0) {
3755 OBD_ALLOC_PTR(ss->ss_control_seq);
3756 if (ss->ss_control_seq == NULL)
3759 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
3760 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
3763 GOTO(out_seq_fini, rc);
3766 /* Init normal sequence server */
3767 OBD_ALLOC_PTR(ss->ss_server_seq);
3768 if (ss->ss_server_seq == NULL)
3769 GOTO(out_seq_fini, rc = -ENOMEM);
3771 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
3772 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
3774 GOTO(out_seq_fini, rc);
3776 /* init seq client for seq server to talk to seq controller(MDT0) */
3777 rc = mdt_seq_init_cli(env, mdt);
3779 GOTO(out_seq_fini, rc);
3781 if (ss->ss_node_id != 0)
3782 /* register controler export through lwp */
3783 rc = mdt_register_seq_exp(mdt);
3788 mdt_seq_fini(env, mdt);
3796 static int mdt_fld_fini(const struct lu_env *env,
3797 struct mdt_device *m)
3799 struct seq_server_site *ss = mdt_seq_site(m);
3802 if (ss && ss->ss_server_fld) {
3803 fld_server_fini(env, ss->ss_server_fld);
3804 OBD_FREE_PTR(ss->ss_server_fld);
3805 ss->ss_server_fld = NULL;
3811 static int mdt_fld_init(const struct lu_env *env,
3813 struct mdt_device *m)
3815 struct seq_server_site *ss;
3819 ss = mdt_seq_site(m);
3821 OBD_ALLOC_PTR(ss->ss_server_fld);
3822 if (ss->ss_server_fld == NULL)
3823 RETURN(rc = -ENOMEM);
3825 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
3828 OBD_FREE_PTR(ss->ss_server_fld);
3829 ss->ss_server_fld = NULL;
3836 static void mdt_stack_pre_fini(const struct lu_env *env,
3837 struct mdt_device *m, struct lu_device *top)
3839 struct lustre_cfg_bufs *bufs;
3840 struct lustre_cfg *lcfg;
3841 struct mdt_thread_info *info;
3846 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3847 LASSERT(info != NULL);
3849 bufs = &info->mti_u.bufs;
3851 LASSERT(m->mdt_child_exp);
3852 LASSERT(m->mdt_child_exp->exp_obd);
3854 /* process cleanup, pass mdt obd name to get obd umount flags */
3855 /* XXX: this is needed because all layers are referenced by
3856 * objects (some of them are pinned by osd, for example *
3857 * the proper solution should be a model where object used
3858 * by osd only doesn't have mdt/mdd slices -bzzz */
3859 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
3860 lustre_cfg_bufs_set_string(bufs, 1, NULL);
3861 lcfg = lustre_cfg_new(LCFG_PRE_CLEANUP, bufs);
3865 top->ld_ops->ldo_process_config(env, top, lcfg);
3866 lustre_cfg_free(lcfg);
3870 static void mdt_stack_fini(const struct lu_env *env,
3871 struct mdt_device *m, struct lu_device *top)
3873 struct obd_device *obd = mdt2obd_dev(m);
3874 struct lustre_cfg_bufs *bufs;
3875 struct lustre_cfg *lcfg;
3876 struct mdt_thread_info *info;
3880 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3881 LASSERT(info != NULL);
3883 lu_dev_del_linkage(top->ld_site, top);
3885 lu_site_purge(env, top->ld_site, -1);
3887 bufs = &info->mti_u.bufs;
3888 /* process cleanup, pass mdt obd name to get obd umount flags */
3889 /* another purpose is to let all layers to release their objects */
3890 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
3895 lustre_cfg_bufs_set_string(bufs, 1, flags);
3896 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
3901 top->ld_ops->ldo_process_config(env, top, lcfg);
3902 lustre_cfg_free(lcfg);
3904 lu_site_purge(env, top->ld_site, -1);
3906 m->mdt_child = NULL;
3907 m->mdt_bottom = NULL;
3909 obd_disconnect(m->mdt_child_exp);
3910 m->mdt_child_exp = NULL;
3912 obd_disconnect(m->mdt_bottom_exp);
3913 m->mdt_child_exp = NULL;
3916 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
3917 const char *next, struct obd_export **exp)
3919 struct obd_connect_data *data = NULL;
3920 struct obd_device *obd;
3924 OBD_ALLOC_PTR(data);
3926 GOTO(out, rc = -ENOMEM);
3928 obd = class_name2obd(next);
3930 CERROR("%s: can't locate next device: %s\n",
3931 mdt_obd_name(m), next);
3932 GOTO(out, rc = -ENOTCONN);
3935 data->ocd_connect_flags = OBD_CONNECT_VERSION;
3936 data->ocd_version = LUSTRE_VERSION_CODE;
3938 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
3940 CERROR("%s: cannot connect to next dev %s (%d)\n",
3941 mdt_obd_name(m), next, rc);
3951 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
3952 struct lustre_cfg *cfg)
3954 char *dev = lustre_cfg_string(cfg, 0);
3955 int rc, name_size, uuid_size;
3956 char *name, *uuid, *p;
3957 struct lustre_cfg_bufs *bufs;
3958 struct lustre_cfg *lcfg;
3959 struct obd_device *obd;
3960 struct lustre_profile *lprof;
3961 struct lu_site *site;
3964 /* in 1.8 we had the only device in the stack - MDS.
3965 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
3966 * in 2.3 OSD is instantiated by obd_mount.c, so we need
3967 * to generate names and setup MDT, MDD. MDT will be using
3968 * generated name to connect to MDD. for MDD the next device
3969 * will be LOD with name taken from so called "profile" which
3970 * is generated by mount_option line
3972 * 1.8 MGS generates config. commands like this:
3973 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
3974 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
3975 * 2.0 MGS generates config. commands like this:
3976 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
3977 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
3978 * 3:lustre-MDT0000-mdtlov 4:f
3980 * we generate MDD name from MDT one, just replacing T with D
3982 * after all the preparations, the logical equivalent will be
3983 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
3984 * 3:lustre-MDT0000-mdtlov 4:f
3985 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
3986 * 3:lustre-MDD0000 4:f
3988 * notice we build the stack from down to top: MDD first, then MDT */
3990 name_size = MAX_OBD_NAME;
3991 uuid_size = MAX_OBD_NAME;
3993 OBD_ALLOC(name, name_size);
3994 OBD_ALLOC(uuid, uuid_size);
3995 if (name == NULL || uuid == NULL)
3996 GOTO(cleanup_mem, rc = -ENOMEM);
3998 OBD_ALLOC_PTR(bufs);
4000 GOTO(cleanup_mem, rc = -ENOMEM);
4003 p = strstr(name, "-MDT");
4005 GOTO(free_bufs, rc = -ENOMEM);
4008 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
4010 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4011 if (lprof == NULL || lprof->lp_dt == NULL) {
4012 CERROR("can't find the profile: %s\n",
4013 lustre_cfg_string(cfg, 0));
4014 GOTO(free_bufs, rc = -EINVAL);
4017 lustre_cfg_bufs_reset(bufs, name);
4018 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
4019 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4020 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4022 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
4024 GOTO(free_bufs, rc = -ENOMEM);
4026 rc = class_attach(lcfg);
4028 GOTO(lcfg_cleanup, rc);
4030 obd = class_name2obd(name);
4032 CERROR("Can not find obd %s (%s in config)\n",
4033 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
4034 GOTO(lcfg_cleanup, rc = -EINVAL);
4037 lustre_cfg_free(lcfg);
4039 lustre_cfg_bufs_reset(bufs, name);
4040 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4041 lustre_cfg_bufs_set_string(bufs, 2, dev);
4042 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4044 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4046 GOTO(class_detach, rc = -ENOMEM);
4048 rc = class_setup(obd, lcfg);
4050 GOTO(class_detach, rc);
4052 /* connect to MDD we just setup */
4053 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
4055 GOTO(class_detach, rc);
4057 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
4059 LASSERT(mdt_lu_site(mdt) == NULL);
4060 mdt->mdt_lu_dev.ld_site = site;
4061 site->ls_top_dev = &mdt->mdt_lu_dev;
4062 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
4064 /* now connect to bottom OSD */
4065 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
4066 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
4068 GOTO(class_detach, rc);
4070 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
4072 rc = lu_env_refill((struct lu_env *)env);
4074 CERROR("Failure to refill session: '%d'\n", rc);
4076 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
4081 class_detach(obd, lcfg);
4083 lustre_cfg_free(lcfg);
4088 OBD_FREE(name, name_size);
4090 OBD_FREE(uuid, uuid_size);
4094 /* setup quota master target on MDT0 */
4095 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
4096 struct lustre_cfg *cfg)
4098 struct obd_device *obd;
4099 char *dev = lustre_cfg_string(cfg, 0);
4100 char *qmtname, *uuid, *p;
4101 struct lustre_cfg_bufs *bufs;
4102 struct lustre_cfg *lcfg;
4103 struct lustre_profile *lprof;
4104 struct obd_connect_data *data;
4108 LASSERT(mdt->mdt_qmt_exp == NULL);
4109 LASSERT(mdt->mdt_qmt_dev == NULL);
4111 /* quota master is on MDT0 only for now */
4112 if (mdt->mdt_seq_site.ss_node_id != 0)
4115 /* MGS generates config commands which look as follows:
4116 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4117 * 3:lustre-MDT0000-mdtlov 4:f
4119 * We generate the QMT name from the MDT one, just replacing MD with QM
4120 * after all the preparations, the logical equivalent will be:
4121 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
4122 * 3:lustre-MDT0000-osd 4:f */
4123 OBD_ALLOC(qmtname, MAX_OBD_NAME);
4124 OBD_ALLOC(uuid, UUID_MAX);
4125 OBD_ALLOC_PTR(bufs);
4126 OBD_ALLOC_PTR(data);
4127 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
4128 GOTO(cleanup_mem, rc = -ENOMEM);
4130 strcpy(qmtname, dev);
4131 p = strstr(qmtname, "-MDT");
4133 GOTO(cleanup_mem, rc = -ENOMEM);
4134 /* replace MD with QM */
4138 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
4140 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4141 if (lprof == NULL || lprof->lp_dt == NULL) {
4142 CERROR("can't find profile for %s\n",
4143 lustre_cfg_string(cfg, 0));
4144 GOTO(cleanup_mem, rc = -EINVAL);
4147 lustre_cfg_bufs_reset(bufs, qmtname);
4148 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
4149 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4150 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4152 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
4154 GOTO(cleanup_mem, rc = -ENOMEM);
4156 rc = class_attach(lcfg);
4158 GOTO(lcfg_cleanup, rc);
4160 obd = class_name2obd(qmtname);
4162 CERROR("Can not find obd %s (%s in config)\n", qmtname,
4163 lustre_cfg_string(cfg, 0));
4164 GOTO(lcfg_cleanup, rc = -EINVAL);
4167 lustre_cfg_free(lcfg);
4169 lustre_cfg_bufs_reset(bufs, qmtname);
4170 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4171 lustre_cfg_bufs_set_string(bufs, 2, dev);
4173 /* for quota, the next device should be the OSD device */
4174 lustre_cfg_bufs_set_string(bufs, 3,
4175 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
4177 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4179 GOTO(class_detach, rc = -ENOMEM);
4181 rc = class_setup(obd, lcfg);
4183 GOTO(class_detach, rc);
4185 mdt->mdt_qmt_dev = obd->obd_lu_dev;
4187 /* configure local quota objects */
4188 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
4192 GOTO(class_cleanup, rc);
4194 /* connect to quota master target */
4195 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4196 data->ocd_version = LUSTRE_VERSION_CODE;
4197 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
4200 CERROR("cannot connect to quota master device %s (%d)\n",
4202 GOTO(class_cleanup, rc);
4208 class_manual_cleanup(obd);
4209 mdt->mdt_qmt_dev = NULL;
4213 class_detach(obd, lcfg);
4215 lustre_cfg_free(lcfg);
4220 OBD_FREE(qmtname, MAX_OBD_NAME);
4222 OBD_FREE(uuid, UUID_MAX);
4228 /* Shutdown quota master target associated with mdt */
4229 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
4233 if (mdt->mdt_qmt_exp == NULL)
4235 LASSERT(mdt->mdt_qmt_dev != NULL);
4237 /* the qmt automatically shuts down when the mdt disconnects */
4238 obd_disconnect(mdt->mdt_qmt_exp);
4239 mdt->mdt_qmt_exp = NULL;
4240 mdt->mdt_qmt_dev = NULL;
4244 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
4245 * for now. This will be removed along with converting rest of MDT code
4246 * to use tgt_session_info */
4247 static int mdt_tgt_getxattr(struct tgt_session_info *tsi)
4249 struct mdt_thread_info *info = tsi2mdt_info(tsi);
4252 rc = mdt_getxattr(info);
4254 mdt_thread_info_fini(info);
4258 static struct tgt_handler mdt_tgt_handlers[] = {
4259 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4260 0, MDS_CONNECT, mdt_tgt_connect,
4261 &RQF_CONNECT, LUSTRE_OBD_VERSION),
4262 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4263 0, MDS_DISCONNECT, tgt_disconnect,
4264 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
4265 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4266 HABEO_REFERO, MDS_SET_INFO, mdt_set_info,
4267 &RQF_OBD_SET_INFO, LUSTRE_MDS_VERSION),
4268 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
4269 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_GETSTATUS, mdt_getstatus),
4270 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETATTR, mdt_getattr),
4271 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_GETATTR_NAME,
4273 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETXATTR, mdt_tgt_getxattr),
4274 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_STATFS, mdt_statfs),
4275 TGT_MDT_HDL(0 | MUTABOR, MDS_REINT, mdt_reint),
4276 TGT_MDT_HDL(HABEO_CORPUS, MDS_CLOSE, mdt_close),
4277 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_READPAGE, mdt_readpage),
4278 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_SYNC, mdt_sync),
4279 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
4280 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_PROGRESS,
4282 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_REGISTER,
4283 mdt_hsm_ct_register),
4284 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_UNREGISTER,
4285 mdt_hsm_ct_unregister),
4286 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_STATE_GET,
4288 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_STATE_SET,
4290 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_ACTION, mdt_hsm_action),
4291 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_REQUEST,
4293 TGT_MDT_HDL(HABEO_CLAVIS | HABEO_CORPUS | HABEO_REFERO | MUTABOR,
4298 static struct tgt_handler mdt_sec_ctx_ops[] = {
4299 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
4300 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
4301 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
4304 static struct tgt_handler mdt_quota_ops[] = {
4305 TGT_QUOTA_HDL(HABEO_REFERO, QUOTA_DQACQ, mdt_quota_dqacq),
4308 static struct tgt_opc_slice mdt_common_slice[] = {
4310 .tos_opc_start = MDS_FIRST_OPC,
4311 .tos_opc_end = MDS_LAST_OPC,
4312 .tos_hs = mdt_tgt_handlers
4315 .tos_opc_start = OBD_FIRST_OPC,
4316 .tos_opc_end = OBD_LAST_OPC,
4317 .tos_hs = tgt_obd_handlers
4320 .tos_opc_start = LDLM_FIRST_OPC,
4321 .tos_opc_end = LDLM_LAST_OPC,
4322 .tos_hs = tgt_dlm_handlers
4325 .tos_opc_start = SEC_FIRST_OPC,
4326 .tos_opc_end = SEC_LAST_OPC,
4327 .tos_hs = mdt_sec_ctx_ops
4330 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
4331 .tos_opc_end = OUT_UPDATE_LAST_OPC,
4332 .tos_hs = tgt_out_handlers
4335 .tos_opc_start = FLD_FIRST_OPC,
4336 .tos_opc_end = FLD_LAST_OPC,
4337 .tos_hs = fld_handlers
4340 .tos_opc_start = SEQ_FIRST_OPC,
4341 .tos_opc_end = SEQ_LAST_OPC,
4342 .tos_hs = seq_handlers
4345 .tos_opc_start = QUOTA_DQACQ,
4346 .tos_opc_end = QUOTA_LAST_OPC,
4347 .tos_hs = mdt_quota_ops
4350 .tos_opc_start = LLOG_FIRST_OPC,
4351 .tos_opc_end = LLOG_LAST_OPC,
4352 .tos_hs = tgt_llog_handlers
4355 .tos_opc_start = LFSCK_FIRST_OPC,
4356 .tos_opc_end = LFSCK_LAST_OPC,
4357 .tos_hs = tgt_lfsck_handlers
4365 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4367 struct md_device *next = m->mdt_child;
4368 struct lu_device *d = &m->mdt_lu_dev;
4369 struct obd_device *obd = mdt2obd_dev(m);
4370 struct lfsck_stop stop;
4373 stop.ls_status = LS_PAUSED;
4375 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
4377 target_recovery_fini(obd);
4378 ping_evictor_stop();
4379 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
4381 if (m->mdt_opts.mo_coordinator)
4382 mdt_hsm_cdt_stop(m);
4384 mdt_hsm_cdt_fini(m);
4386 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
4387 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4388 obd_exports_barrier(obd);
4389 obd_zombie_barrier();
4393 tgt_fini(env, &m->mdt_lut);
4394 mdt_fs_cleanup(env, m);
4395 upcall_cache_cleanup(m->mdt_identity_cache);
4396 m->mdt_identity_cache = NULL;
4398 if (m->mdt_namespace != NULL) {
4399 ldlm_namespace_free(m->mdt_namespace, NULL,
4400 d->ld_obd->obd_force);
4401 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
4404 mdt_quota_fini(env, m);
4406 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
4408 mdt_seq_fini(env, m);
4409 mdt_fld_fini(env, m);
4411 next->md_ops->mdo_init_capa_ctxt(env, next, 0, 0, 0, NULL);
4412 cfs_timer_disarm(&m->mdt_ck_timer);
4413 mdt_ck_thread_stop(m);
4418 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4420 LASSERT(atomic_read(&d->ld_ref) == 0);
4422 server_put_mount(mdt_obd_name(m), true);
4427 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4429 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4430 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4432 struct mdt_thread_info *info;
4433 struct obd_device *obd;
4434 const char *dev = lustre_cfg_string(cfg, 0);
4435 const char *num = lustre_cfg_string(cfg, 2);
4436 struct lustre_mount_info *lmi = NULL;
4437 struct lustre_sb_info *lsi;
4439 struct seq_server_site *ss_site;
4440 const char *identity_upcall = "NONE";
4441 struct md_device *next;
4447 lu_device_init(&m->mdt_lu_dev, ldt);
4449 * Environment (env) might be missing mdt_thread_key values at that
4450 * point, if device is allocated when mdt_thread_key is in QUIESCENT
4453 * Usually device allocation path doesn't use module key values, but
4454 * mdt has to do a lot of work here, so allocate key value.
4456 rc = lu_env_refill((struct lu_env *)env);
4460 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4461 LASSERT(info != NULL);
4463 obd = class_name2obd(dev);
4464 LASSERT(obd != NULL);
4466 m->mdt_max_mdsize = MAX_MD_SIZE; /* 4 stripes */
4468 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
4470 /* default is coordinator off, it is started through conf_param
4472 m->mdt_opts.mo_coordinator = 0;
4474 lmi = server_get_mount(dev);
4476 CERROR("Cannot get mount info for %s!\n", dev);
4479 lsi = s2lsi(lmi->lmi_sb);
4480 /* CMD is supported only in IAM mode */
4482 node_id = simple_strtol(num, NULL, 10);
4483 obd->u.obt.obt_magic = OBT_MAGIC;
4486 m->mdt_capa_timeout = CAPA_TIMEOUT;
4487 m->mdt_capa_alg = CAPA_HMAC_ALG_SHA1;
4488 m->mdt_ck_timeout = CAPA_KEY_TIMEOUT;
4489 m->mdt_squash.rsi_uid = 0;
4490 m->mdt_squash.rsi_gid = 0;
4491 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
4492 init_rwsem(&m->mdt_squash.rsi_sem);
4493 spin_lock_init(&m->mdt_osfs_lock);
4494 m->mdt_osfs_age = cfs_time_shift_64(-1000);
4495 m->mdt_enable_remote_dir = 0;
4496 m->mdt_enable_remote_dir_gid = 0;
4498 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
4499 m->mdt_lu_dev.ld_obd = obd;
4500 /* Set this lu_device to obd for error handling purposes. */
4501 obd->obd_lu_dev = &m->mdt_lu_dev;
4503 /* init the stack */
4504 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
4506 CERROR("%s: Can't init device stack, rc %d\n",
4507 mdt_obd_name(m), rc);
4512 ss_site = mdt_seq_site(m);
4513 s->ld_seq_site = ss_site;
4516 /* set server index */
4517 ss_site->ss_node_id = node_id;
4519 /* failover is the default
4520 * FIXME: we do not failout mds0/mgs, which may cause some problems.
4521 * assumed whose ss_node_id == 0 XXX
4523 obd->obd_replayable = 1;
4524 /* No connection accepted until configurations will finish */
4525 obd->obd_no_conn = 1;
4527 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
4528 char *str = lustre_cfg_string(cfg, 4);
4529 if (strchr(str, 'n')) {
4530 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
4531 obd->obd_replayable = 0;
4535 rc = mdt_fld_init(env, mdt_obd_name(m), m);
4537 GOTO(err_fini_stack, rc);
4539 rc = mdt_seq_init(env, m);
4541 GOTO(err_fini_fld, rc);
4543 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
4544 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
4545 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
4546 LDLM_NAMESPACE_SERVER,
4547 LDLM_NAMESPACE_GREEDY,
4549 if (m->mdt_namespace == NULL)
4550 GOTO(err_fini_seq, rc = -ENOMEM);
4552 m->mdt_namespace->ns_lvbp = m;
4553 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
4555 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
4556 /* set obd_namespace for compatibility with old code */
4557 obd->obd_namespace = m->mdt_namespace;
4559 cfs_timer_init(&m->mdt_ck_timer, mdt_ck_timer_callback, m);
4561 rc = mdt_hsm_cdt_init(m);
4563 CERROR("%s: error initializing coordinator, rc %d\n",
4564 mdt_obd_name(m), rc);
4565 GOTO(err_free_ns, rc);
4568 rc = mdt_ck_thread_start(m);
4570 GOTO(err_free_hsm, rc);
4572 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
4573 OBD_FAIL_MDS_ALL_REQUEST_NET,
4574 OBD_FAIL_MDS_ALL_REPLY_NET);
4578 rc = mdt_fs_setup(env, m, obd, lsi);
4582 tgt_adapt_sptlrpc_conf(&m->mdt_lut, 1);
4584 next = m->mdt_child;
4585 rc = next->md_ops->mdo_iocontrol(env, next, OBD_IOC_GET_MNTOPT, 0,
4588 GOTO(err_fs_cleanup, rc);
4590 if (mntopts & MNTOPT_USERXATTR)
4591 m->mdt_opts.mo_user_xattr = 1;
4593 m->mdt_opts.mo_user_xattr = 0;
4595 rc = next->md_ops->mdo_maxeasize_get(env, next, &m->mdt_max_ea_size);
4597 GOTO(err_fs_cleanup, rc);
4599 if (mntopts & MNTOPT_ACL)
4600 m->mdt_opts.mo_acl = 1;
4602 m->mdt_opts.mo_acl = 0;
4604 /* XXX: to support suppgid for ACL, we enable identity_upcall
4605 * by default, otherwise, maybe got unexpected -EACCESS. */
4606 if (m->mdt_opts.mo_acl)
4607 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
4609 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
4611 &mdt_identity_upcall_cache_ops);
4612 if (IS_ERR(m->mdt_identity_cache)) {
4613 rc = PTR_ERR(m->mdt_identity_cache);
4614 m->mdt_identity_cache = NULL;
4615 GOTO(err_fs_cleanup, rc);
4618 rc = mdt_procfs_init(m, dev);
4620 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
4621 GOTO(err_recovery, rc);
4624 rc = mdt_quota_init(env, m, cfg);
4626 GOTO(err_procfs, rc);
4628 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
4629 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
4630 "mdt_ldlm_client", m->mdt_ldlm_client);
4632 ping_evictor_start();
4634 /* recovery will be started upon mdt_prepare()
4635 * when the whole stack is complete and ready
4636 * to serve the requests */
4638 mdt_init_capa_ctxt(env, m);
4640 /* Reduce the initial timeout on an MDS because it doesn't need such
4641 * a long timeout as an OST does. Adaptive timeouts will adjust this
4642 * value appropriately. */
4643 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
4644 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
4650 target_recovery_fini(obd);
4651 upcall_cache_cleanup(m->mdt_identity_cache);
4652 m->mdt_identity_cache = NULL;
4654 mdt_fs_cleanup(env, m);
4656 tgt_fini(env, &m->mdt_lut);
4658 cfs_timer_disarm(&m->mdt_ck_timer);
4659 mdt_ck_thread_stop(m);
4661 mdt_hsm_cdt_fini(m);
4663 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
4664 obd->obd_namespace = m->mdt_namespace = NULL;
4666 mdt_seq_fini(env, m);
4668 mdt_fld_fini(env, m);
4670 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4673 server_put_mount(dev, true);
4677 /* For interoperability, the left element is old parameter, the right one
4678 * is the new version of the parameter, if some parameter is deprecated,
4679 * the new version should be set as NULL. */
4680 static struct cfg_interop_param mdt_interop_param[] = {
4681 { "mdt.group_upcall", NULL },
4682 { "mdt.quota_type", NULL },
4683 { "mdd.quota_type", NULL },
4684 { "mdt.rootsquash", "mdt.root_squash" },
4685 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
4689 /* used by MGS to process specific configurations */
4690 static int mdt_process_config(const struct lu_env *env,
4691 struct lu_device *d, struct lustre_cfg *cfg)
4693 struct mdt_device *m = mdt_dev(d);
4694 struct md_device *md_next = m->mdt_child;
4695 struct lu_device *next = md2lu_dev(md_next);
4699 switch (cfg->lcfg_command) {
4701 struct obd_device *obd = d->ld_obd;
4703 /* For interoperability */
4704 struct cfg_interop_param *ptr = NULL;
4705 struct lustre_cfg *old_cfg = NULL;
4708 param = lustre_cfg_string(cfg, 1);
4709 if (param == NULL) {
4710 CERROR("param is empty\n");
4715 ptr = class_find_old_param(param, mdt_interop_param);
4717 if (ptr->new_param == NULL) {
4719 CWARN("For interoperability, skip this %s."
4720 " It is obsolete.\n", ptr->old_param);
4724 CWARN("Found old param %s, changed it to %s.\n",
4725 ptr->old_param, ptr->new_param);
4728 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
4735 rc = class_process_proc_param(PARAM_MDT, obd->obd_vars,
4737 if (rc > 0 || rc == -ENOSYS) {
4738 /* is it an HSM var ? */
4739 rc = class_process_proc_param(PARAM_HSM,
4740 hsm_cdt_get_proc_vars(),
4742 if (rc > 0 || rc == -ENOSYS)
4743 /* we don't understand; pass it on */
4744 rc = next->ld_ops->ldo_process_config(env, next,
4748 if (old_cfg != NULL)
4749 lustre_cfg_free(cfg);
4754 /* others are passed further */
4755 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4761 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
4762 const struct lu_object_header *hdr,
4763 struct lu_device *d)
4765 struct mdt_object *mo;
4769 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
4771 struct lu_object *o;
4772 struct lu_object_header *h;
4775 h = &mo->mot_header;
4776 lu_object_header_init(h);
4777 lu_object_init(o, h, d);
4778 lu_object_add_top(h, o);
4779 o->lo_ops = &mdt_obj_ops;
4780 spin_lock_init(&mo->mot_write_lock);
4781 mutex_init(&mo->mot_lov_mutex);
4782 init_rwsem(&mo->mot_open_sem);
4788 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
4789 const struct lu_object_conf *unused)
4791 struct mdt_device *d = mdt_dev(o->lo_dev);
4792 struct lu_device *under;
4793 struct lu_object *below;
4797 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
4798 PFID(lu_object_fid(o)));
4800 under = &d->mdt_child->md_lu_dev;
4801 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
4802 if (below != NULL) {
4803 lu_object_add(o, below);
4810 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
4812 struct mdt_object *mo = mdt_obj(o);
4813 struct lu_object_header *h;
4817 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
4818 PFID(lu_object_fid(o)));
4820 LASSERT(atomic_read(&mo->mot_open_count) == 0);
4821 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
4824 lu_object_header_fini(h);
4825 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
4830 static int mdt_object_print(const struct lu_env *env, void *cookie,
4831 lu_printer_t p, const struct lu_object *o)
4833 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
4835 return (*p)(env, cookie,
4836 LUSTRE_MDT_NAME"-object@%p(flags=%d, writecount=%d)",
4837 mdto, mdto->mot_flags, mdto->mot_write_count);
4840 static int mdt_prepare(const struct lu_env *env,
4841 struct lu_device *pdev,
4842 struct lu_device *cdev)
4844 struct mdt_device *mdt = mdt_dev(cdev);
4845 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
4846 struct obd_device *obd = cdev->ld_obd;
4853 rc = next->ld_ops->ldo_prepare(env, cdev, next);
4857 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
4861 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
4865 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
4866 /* The LFSCK instance is registered just now, so it must be there when
4867 * register the namespace to such instance. */
4868 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
4870 if (mdt->mdt_seq_site.ss_node_id == 0) {
4871 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
4872 &mdt->mdt_md_root_fid);
4877 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
4878 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
4879 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
4880 LASSERT(obd->obd_no_conn);
4881 spin_lock(&obd->obd_dev_lock);
4882 obd->obd_no_conn = 0;
4883 spin_unlock(&obd->obd_dev_lock);
4885 if (obd->obd_recovering == 0)
4886 mdt_postrecov(env, mdt);
4891 const struct lu_device_operations mdt_lu_ops = {
4892 .ldo_object_alloc = mdt_object_alloc,
4893 .ldo_process_config = mdt_process_config,
4894 .ldo_prepare = mdt_prepare,
4897 static const struct lu_object_operations mdt_obj_ops = {
4898 .loo_object_init = mdt_object_init,
4899 .loo_object_free = mdt_object_free,
4900 .loo_object_print = mdt_object_print
4903 static int mdt_obd_set_info_async(const struct lu_env *env,
4904 struct obd_export *exp,
4905 __u32 keylen, void *key,
4906 __u32 vallen, void *val,
4907 struct ptlrpc_request_set *set)
4913 if (KEY_IS(KEY_SPTLRPC_CONF)) {
4914 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp), 0);
4922 * Match client and server connection feature flags.
4924 * Compute the compatibility flags for a connection request based on
4925 * features mutually supported by client and server.
4927 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
4928 * must not be updated here, otherwise a partially initialized value may
4929 * be exposed. After the connection request is successfully processed,
4930 * the top-level MDT connect request handler atomically updates the export
4931 * connect flags from the obd_connect_data::ocd_connect_flags field of the
4932 * reply. \see mdt_connect().
4934 * \param exp the obd_export associated with this client/target pair
4935 * \param mdt the target device for the connection
4936 * \param data stores data for this connect request
4939 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
4940 * \retval -EBADE client and server feature requirements are incompatible
4942 static int mdt_connect_internal(struct obd_export *exp,
4943 struct mdt_device *mdt,
4944 struct obd_connect_data *data)
4946 LASSERT(data != NULL);
4948 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
4949 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
4951 if (!(data->ocd_connect_flags & OBD_CONNECT_MDS_MDS) &&
4952 !(data->ocd_connect_flags & OBD_CONNECT_IBITS)) {
4953 CWARN("%s: client %s does not support ibits lock, either "
4954 "very old or an invalid client: flags "LPX64"\n",
4955 mdt_obd_name(mdt), exp->exp_client_uuid.uuid,
4956 data->ocd_connect_flags);
4960 if (!mdt->mdt_opts.mo_acl)
4961 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
4963 if (!mdt->mdt_opts.mo_user_xattr)
4964 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
4966 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
4967 data->ocd_brw_size = min(data->ocd_brw_size,
4968 (__u32)MD_MAX_BRW_SIZE);
4969 if (data->ocd_brw_size == 0) {
4970 CERROR("%s: cli %s/%p ocd_connect_flags: "LPX64
4971 " ocd_version: %x ocd_grant: %d "
4972 "ocd_index: %u ocd_brw_size is "
4973 "unexpectedly zero, network data "
4974 "corruption? Refusing connection of this"
4977 exp->exp_client_uuid.uuid,
4978 exp, data->ocd_connect_flags, data->ocd_version,
4979 data->ocd_grant, data->ocd_index);
4984 /* NB: Disregard the rule against updating
4985 * exp_connect_data.ocd_connect_flags in this case, since
4986 * tgt_client_new() needs to know if this is a lightweight
4987 * connection, and it is safe to expose this flag before
4988 * connection processing completes. */
4989 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
4990 spin_lock(&exp->exp_lock);
4991 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
4992 spin_unlock(&exp->exp_lock);
4995 data->ocd_version = LUSTRE_VERSION_CODE;
4997 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
4998 CWARN("%s: MDS requires FID support, but client not\n",
5003 if (OCD_HAS_FLAG(data, PINGLESS)) {
5004 if (ptlrpc_pinger_suppress_pings()) {
5005 spin_lock(&exp->exp_obd->obd_dev_lock);
5006 list_del_init(&exp->exp_obd_chain_timed);
5007 spin_unlock(&exp->exp_obd->obd_dev_lock);
5009 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
5013 data->ocd_max_easize = mdt->mdt_max_ea_size;
5018 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
5019 struct mdt_thread_info *info,
5020 struct mdt_file_data *mfd)
5022 struct lu_context ses;
5026 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
5031 lu_context_enter(&ses);
5033 mdt_ucred(info)->uc_valid = UCRED_OLD;
5034 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
5036 lu_context_exit(&ses);
5037 lu_context_fini(&ses);
5043 static int mdt_export_cleanup(struct obd_export *exp)
5045 struct list_head closing_list;
5046 struct mdt_export_data *med = &exp->exp_mdt_data;
5047 struct obd_device *obd = exp->exp_obd;
5048 struct mdt_device *mdt;
5049 struct mdt_thread_info *info;
5051 struct mdt_file_data *mfd, *n;
5055 INIT_LIST_HEAD(&closing_list);
5056 spin_lock(&med->med_open_lock);
5057 while (!list_empty(&med->med_open_head)) {
5058 struct list_head *tmp = med->med_open_head.next;
5059 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
5061 /* Remove mfd handle so it can't be found again.
5062 * We are consuming the mfd_list reference here. */
5063 class_handle_unhash(&mfd->mfd_handle);
5064 list_move_tail(&mfd->mfd_list, &closing_list);
5066 spin_unlock(&med->med_open_lock);
5067 mdt = mdt_dev(obd->obd_lu_dev);
5068 LASSERT(mdt != NULL);
5070 rc = lu_env_init(&env, LCT_MD_THREAD);
5074 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5075 LASSERT(info != NULL);
5076 memset(info, 0, sizeof *info);
5077 info->mti_env = &env;
5078 info->mti_mdt = mdt;
5079 info->mti_exp = exp;
5081 if (!list_empty(&closing_list)) {
5082 struct md_attr *ma = &info->mti_attr;
5084 /* Close any open files (which may also cause orphan
5086 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
5087 list_del_init(&mfd->mfd_list);
5088 ma->ma_need = ma->ma_valid = 0;
5090 /* This file is being closed due to an eviction, it
5091 * could have been modified and now dirty regarding to
5092 * HSM archive, check this!
5093 * The logic here is to mark a file dirty if there's a
5094 * chance it was dirtied before the client was evicted,
5095 * so that we don't have to wait for a release attempt
5096 * before finding out the file was actually dirty and
5097 * fail the release. Aggressively marking it dirty here
5098 * will cause the policy engine to attempt to
5099 * re-archive it; when rearchiving, we can compare the
5100 * current version to the HSM data_version and make the
5101 * archive request into a noop if it's not actually
5104 if (mfd->mfd_mode & FMODE_WRITE)
5105 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
5107 /* Don't unlink orphan on failover umount, LU-184 */
5108 if (exp->exp_flags & OBD_OPT_FAILOVER) {
5109 ma->ma_valid = MA_FLAGS;
5110 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
5112 mdt_mfd_close(info, mfd);
5115 info->mti_mdt = NULL;
5116 /* cleanup client slot early */
5117 /* Do not erase record for recoverable client. */
5118 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
5119 tgt_client_del(&env, exp);
5125 static int mdt_obd_disconnect(struct obd_export *exp)
5131 class_export_get(exp);
5133 nodemap_del_member(exp);
5134 rc = server_disconnect_export(exp);
5136 CDEBUG(D_IOCTL, "server disconnect error: rc = %d\n", rc);
5138 rc = mdt_export_cleanup(exp);
5139 class_export_put(exp);
5143 /* mds_connect copy */
5144 static int mdt_obd_connect(const struct lu_env *env,
5145 struct obd_export **exp, struct obd_device *obd,
5146 struct obd_uuid *cluuid,
5147 struct obd_connect_data *data,
5150 struct obd_export *lexp;
5151 struct lustre_handle conn = { 0 };
5152 struct mdt_device *mdt;
5154 lnet_nid_t *client_nid = localdata;
5157 LASSERT(env != NULL);
5158 if (!exp || !obd || !cluuid)
5161 mdt = mdt_dev(obd->obd_lu_dev);
5164 * first, check whether the stack is ready to handle requests
5165 * XXX: probably not very appropriate method is used now
5166 * at some point we should find a better one
5168 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) && data != NULL &&
5169 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
5170 rc = obd_get_info(env, mdt->mdt_child_exp,
5171 sizeof(KEY_OSP_CONNECTED),
5172 KEY_OSP_CONNECTED, NULL, NULL, NULL);
5175 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
5178 rc = class_connect(&conn, obd, cluuid);
5182 lexp = class_conn2export(&conn);
5183 LASSERT(lexp != NULL);
5185 rc = mdt_connect_internal(lexp, mdt, data);
5187 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
5190 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5191 rc = tgt_client_new(env, lexp);
5193 rc = nodemap_add_member(*client_nid, lexp);
5194 if (rc != 0 && rc != -EEXIST)
5197 mdt_export_stats_init(obd, lexp, localdata);
5200 /* For phase I, sync for cross-ref operation. */
5201 spin_lock(&lexp->exp_lock);
5202 lexp->exp_keep_sync = 1;
5203 spin_unlock(&lexp->exp_lock);
5207 class_disconnect(lexp);
5216 static int mdt_obd_reconnect(const struct lu_env *env,
5217 struct obd_export *exp, struct obd_device *obd,
5218 struct obd_uuid *cluuid,
5219 struct obd_connect_data *data,
5222 lnet_nid_t *client_nid = localdata;
5226 if (exp == NULL || obd == NULL || cluuid == NULL)
5229 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
5231 rc = nodemap_add_member(*client_nid, exp);
5232 if (rc == 0 || rc == -EEXIST)
5233 mdt_export_stats_init(obd, exp, localdata);
5239 /* FIXME: Can we avoid using these two interfaces? */
5240 static int mdt_init_export(struct obd_export *exp)
5242 struct mdt_export_data *med = &exp->exp_mdt_data;
5246 INIT_LIST_HEAD(&med->med_open_head);
5247 spin_lock_init(&med->med_open_lock);
5248 mutex_init(&med->med_idmap_mutex);
5249 med->med_idmap = NULL;
5250 spin_lock(&exp->exp_lock);
5251 exp->exp_connecting = 1;
5252 spin_unlock(&exp->exp_lock);
5254 /* self-export doesn't need client data and ldlm initialization */
5255 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5256 &exp->exp_client_uuid)))
5259 rc = tgt_client_alloc(exp);
5263 rc = ldlm_init_export(exp);
5270 tgt_client_free(exp);
5272 CERROR("%s: Failed to initialize export: rc = %d\n",
5273 exp->exp_obd->obd_name, rc);
5277 static int mdt_destroy_export(struct obd_export *exp)
5281 if (exp_connect_rmtclient(exp))
5282 mdt_cleanup_idmap(&exp->exp_mdt_data);
5284 target_destroy_export(exp);
5285 /* destroy can be called from failed obd_setup, so
5286 * checking uuid is safer than obd_self_export */
5287 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5288 &exp->exp_client_uuid)))
5291 ldlm_destroy_export(exp);
5292 tgt_client_free(exp);
5294 LASSERT(list_empty(&exp->exp_outstanding_replies));
5295 LASSERT(list_empty(&exp->exp_mdt_data.med_open_head));
5300 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
5301 struct linkea_data *ldata)
5305 LASSERT(ldata->ld_buf->lb_buf != NULL);
5307 if (!mdt_object_exists(mdt_obj))
5310 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5311 ldata->ld_buf, XATTR_NAME_LINK);
5312 if (rc == -ERANGE) {
5313 /* Buf was too small, figure out what we need. */
5314 lu_buf_free(ldata->ld_buf);
5315 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5316 ldata->ld_buf, XATTR_NAME_LINK);
5319 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
5320 if (ldata->ld_buf->lb_buf == NULL)
5322 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5323 ldata->ld_buf, XATTR_NAME_LINK);
5328 return linkea_init(ldata);
5332 * Given an MDT object, try to look up the full path to the object.
5333 * Part of the MDT layer implementation of lfs fid2path.
5335 * \param[in] info Per-thread common data shared by MDT level handlers.
5336 * \param[in] obj Object to do path lookup of
5337 * \param[in,out] fp User-provided struct to store path information
5339 * \retval 0 Lookup successful, path information stored in fp
5340 * \retval -EAGAIN Lookup failed, usually because object is being moved
5341 * \retval negative errno if there was a problem
5343 static int mdt_path_current(struct mdt_thread_info *info,
5344 struct mdt_object *obj,
5345 struct getinfo_fid2path *fp)
5347 struct mdt_device *mdt = info->mti_mdt;
5348 struct mdt_object *mdt_obj;
5349 struct link_ea_header *leh;
5350 struct link_ea_entry *lee;
5351 struct lu_name *tmpname = &info->mti_name;
5352 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
5353 struct lu_buf *buf = &info->mti_big_buf;
5356 struct linkea_data ldata = { NULL };
5361 /* temp buffer for path element, the buffer will be finally freed
5362 * in mdt_thread_info_fini */
5363 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
5364 if (buf->lb_buf == NULL)
5368 ptr = fp->gf_path + fp->gf_pathlen - 1;
5371 *tmpfid = fp->gf_fid = *mdt_object_fid(obj);
5373 /* root FID only exists on MDT0, and fid2path should also ends at MDT0,
5374 * so checking root_fid can only happen on MDT0. */
5375 while (!lu_fid_eq(&mdt->mdt_md_root_fid, &fp->gf_fid)) {
5376 struct lu_buf lmv_buf;
5378 mdt_obj = mdt_object_find(info->mti_env, mdt, tmpfid);
5379 if (IS_ERR(mdt_obj))
5380 GOTO(out, rc = PTR_ERR(mdt_obj));
5382 if (!mdt_object_exists(mdt_obj)) {
5383 mdt_object_put(info->mti_env, mdt_obj);
5384 GOTO(out, rc = -ENOENT);
5387 if (mdt_object_remote(mdt_obj)) {
5388 mdt_object_put(info->mti_env, mdt_obj);
5389 GOTO(remote_out, rc = -EREMOTE);
5392 rc = mdt_links_read(info, mdt_obj, &ldata);
5394 mdt_object_put(info->mti_env, mdt_obj);
5399 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
5400 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
5401 /* If set, use link #linkno for path lookup, otherwise use
5402 link #0. Only do this for the final path element. */
5403 if (first && fp->gf_linkno < leh->leh_reccount) {
5405 for (count = 0; count < fp->gf_linkno; count++) {
5406 lee = (struct link_ea_entry *)
5407 ((char *)lee + reclen);
5408 linkea_entry_unpack(lee, &reclen, tmpname,
5411 if (fp->gf_linkno < leh->leh_reccount - 1)
5412 /* indicate to user there are more links */
5416 lmv_buf.lb_buf = info->mti_xattr_buf;
5417 lmv_buf.lb_len = sizeof(info->mti_xattr_buf);
5418 /* Check if it is slave stripes */
5419 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5420 &lmv_buf, XATTR_NAME_LMV);
5421 mdt_object_put(info->mti_env, mdt_obj);
5423 union lmv_mds_md *lmm = lmv_buf.lb_buf;
5425 /* For slave stripes, get its master */
5426 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE) {
5427 fp->gf_fid = *tmpfid;
5430 } else if (rc < 0 && rc != -ENODATA) {
5436 /* Pack the name in the end of the buffer */
5437 ptr -= tmpname->ln_namelen;
5438 if (ptr - 1 <= fp->gf_path)
5439 GOTO(out, rc = -EOVERFLOW);
5440 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
5443 /* keep the last resolved fid to the client, so the
5444 * client will build the left path on another MDT for
5446 fp->gf_fid = *tmpfid;
5452 ptr++; /* skip leading / */
5453 memmove(fp->gf_path, ptr, fp->gf_path + fp->gf_pathlen - ptr);
5460 * Given an MDT object, use mdt_path_current to get the path.
5461 * Essentially a wrapper to retry mdt_path_current a set number of times
5462 * if -EAGAIN is returned (usually because an object is being moved).
5464 * Part of the MDT layer implementation of lfs fid2path.
5466 * \param[in] info Per-thread common data shared by mdt level handlers.
5467 * \param[in] obj Object to do path lookup of
5468 * \param[in,out] fp User-provided struct for arguments and to store path
5471 * \retval 0 Lookup successful, path information stored in fp
5472 * \retval negative errno if there was a problem
5474 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
5475 struct getinfo_fid2path *fp)
5477 struct mdt_device *mdt = info->mti_mdt;
5482 if (fp->gf_pathlen < 3)
5485 if (lu_fid_eq(&mdt->mdt_md_root_fid, mdt_object_fid(obj))) {
5486 fp->gf_path[0] = '\0';
5490 /* Retry multiple times in case file is being moved */
5491 while (tries-- && rc == -EAGAIN)
5492 rc = mdt_path_current(info, obj, fp);
5498 * Get the full path of the provided FID, as of changelog record recno.
5500 * This checks sanity and looks up object for user provided FID
5501 * before calling the actual path lookup code.
5503 * Part of the MDT layer implementation of lfs fid2path.
5505 * \param[in] info Per-thread common data shared by mdt level handlers.
5506 * \param[in,out] fp User-provided struct for arguments and to store path
5509 * \retval 0 Lookup successful, path information and recno stored in fp
5510 * \retval -ENOENT, object does not exist
5511 * \retval negative errno if there was a problem
5513 static int mdt_fid2path(struct mdt_thread_info *info,
5514 struct getinfo_fid2path *fp)
5516 struct mdt_device *mdt = info->mti_mdt;
5517 struct mdt_object *obj;
5521 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
5522 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
5524 if (!fid_is_sane(&fp->gf_fid))
5527 if (!fid_is_namespace_visible(&fp->gf_fid)) {
5528 CWARN("%s: "DFID" is invalid, sequence should be "
5529 ">= "LPX64"\n", mdt_obd_name(mdt),
5530 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
5534 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
5537 CDEBUG(D_IOCTL, "cannot find "DFID": rc = %d\n",
5538 PFID(&fp->gf_fid), rc);
5542 if (mdt_object_remote(obj))
5544 else if (!mdt_object_exists(obj))
5550 mdt_object_put(info->mti_env, obj);
5551 CDEBUG(D_IOCTL, "nonlocal object "DFID": rc = %d\n",
5552 PFID(&fp->gf_fid), rc);
5556 rc = mdt_path(info, obj, fp);
5558 CDEBUG(D_INFO, "fid "DFID", path %s recno "LPX64" linkno %u\n",
5559 PFID(&fp->gf_fid), fp->gf_path, fp->gf_recno, fp->gf_linkno);
5561 mdt_object_put(info->mti_env, obj);
5566 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key,
5567 void *val, int vallen)
5569 struct getinfo_fid2path *fpout, *fpin;
5572 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
5575 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
5576 lustre_swab_fid2path(fpin);
5578 memcpy(fpout, fpin, sizeof(*fpin));
5579 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
5582 rc = mdt_fid2path(info, fpout);
5586 int mdt_get_info(struct tgt_session_info *tsi)
5596 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
5598 CDEBUG(D_IOCTL, "No GETINFO key\n");
5599 RETURN(err_serious(-EFAULT));
5601 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
5604 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
5605 if (vallen == NULL) {
5606 CDEBUG(D_IOCTL, "%s: cannot get RMF_GETINFO_VALLEN buffer\n",
5607 tgt_name(tsi->tsi_tgt));
5608 RETURN(err_serious(-EFAULT));
5611 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
5613 rc = req_capsule_server_pack(tsi->tsi_pill);
5615 RETURN(err_serious(rc));
5617 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
5618 if (valout == NULL) {
5619 CDEBUG(D_IOCTL, "%s: cannot get get-info RPC out buffer\n",
5620 tgt_name(tsi->tsi_tgt));
5621 RETURN(err_serious(-EFAULT));
5624 if (KEY_IS(KEY_FID2PATH)) {
5625 struct mdt_thread_info *info = tsi2mdt_info(tsi);
5627 rc = mdt_rpc_fid2path(info, key, valout, *vallen);
5628 mdt_thread_info_fini(info);
5635 /* Pass the ioc down */
5636 static int mdt_ioc_child(struct lu_env *env, struct mdt_device *mdt,
5637 unsigned int cmd, int len, void *data)
5639 struct lu_context ioctl_session;
5640 struct md_device *next = mdt->mdt_child;
5644 rc = lu_context_init(&ioctl_session, LCT_SERVER_SESSION);
5647 ioctl_session.lc_thread = (struct ptlrpc_thread *)current;
5648 lu_context_enter(&ioctl_session);
5649 env->le_ses = &ioctl_session;
5651 LASSERT(next->md_ops->mdo_iocontrol);
5652 rc = next->md_ops->mdo_iocontrol(env, next, cmd, len, data);
5654 lu_context_exit(&ioctl_session);
5655 lu_context_fini(&ioctl_session);
5659 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
5661 struct obd_ioctl_data *data = karg;
5664 struct mdt_object *obj;
5665 struct mdt_lock_handle *lh;
5669 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
5670 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
5673 fid = (struct lu_fid *)data->ioc_inlbuf1;
5675 if (!fid_is_sane(fid))
5678 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
5680 lh = &mti->mti_lh[MDT_LH_PARENT];
5681 mdt_lock_reg_init(lh, LCK_CR);
5683 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
5685 RETURN(PTR_ERR(obj));
5687 if (mdt_object_remote(obj)) {
5690 * before calling version get the correct MDS should be
5691 * fid, this is error to find remote object here
5693 CERROR("nonlocal object "DFID"\n", PFID(fid));
5694 } else if (!mdt_object_exists(obj)) {
5695 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
5698 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
5699 *(__u64 *)data->ioc_inlbuf2 = version;
5702 mdt_object_unlock_put(mti, obj, lh, 1);
5706 /* ioctls on obd dev */
5707 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
5708 void *karg, void *uarg)
5711 struct obd_device *obd = exp->exp_obd;
5712 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
5713 struct dt_device *dt = mdt->mdt_bottom;
5717 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
5718 rc = lu_env_init(&env, LCT_MD_THREAD);
5724 rc = mdt_device_sync(&env, mdt);
5726 case OBD_IOC_SET_READONLY:
5727 rc = dt->dd_ops->dt_ro(&env, dt);
5729 case OBD_IOC_ABORT_RECOVERY:
5730 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
5731 target_stop_recovery_thread(obd);
5734 case OBD_IOC_CHANGELOG_REG:
5735 case OBD_IOC_CHANGELOG_DEREG:
5736 case OBD_IOC_CHANGELOG_CLEAR:
5737 rc = mdt_ioc_child(&env, mdt, cmd, len, karg);
5739 case OBD_IOC_START_LFSCK: {
5740 struct md_device *next = mdt->mdt_child;
5741 struct obd_ioctl_data *data = karg;
5742 struct lfsck_start_param lsp;
5744 if (unlikely(data == NULL)) {
5749 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
5750 lsp.lsp_index_valid = 0;
5751 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
5754 case OBD_IOC_STOP_LFSCK: {
5755 struct md_device *next = mdt->mdt_child;
5756 struct obd_ioctl_data *data = karg;
5757 struct lfsck_stop stop;
5759 stop.ls_status = LS_STOPPED;
5760 /* Old lfsck utils may pass NULL @stop. */
5761 if (data->ioc_inlbuf1 == NULL)
5765 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
5767 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
5770 case OBD_IOC_GET_OBJ_VERSION: {
5771 struct mdt_thread_info *mti;
5772 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5773 memset(mti, 0, sizeof *mti);
5774 mti->mti_env = &env;
5778 rc = mdt_ioc_version_get(mti, karg);
5781 case OBD_IOC_CATLOGLIST: {
5782 struct mdt_thread_info *mti;
5784 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5785 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
5786 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
5787 &mti->mti_tmp_fid1);
5792 CERROR("%s: Not supported cmd = %d, rc = %d\n",
5793 mdt_obd_name(mdt), cmd, rc);
5800 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
5802 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
5803 struct lfsck_start_param lsp;
5807 lsp.lsp_start = NULL;
5808 lsp.lsp_index_valid = 0;
5809 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
5810 OBD_IOC_START_LFSCK,
5812 if (rc != 0 && rc != -EALREADY)
5813 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
5814 mdt_obd_name(mdt), rc);
5816 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
5820 static int mdt_obd_postrecov(struct obd_device *obd)
5825 rc = lu_env_init(&env, LCT_MD_THREAD);
5828 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
5833 static struct obd_ops mdt_obd_device_ops = {
5834 .o_owner = THIS_MODULE,
5835 .o_set_info_async = mdt_obd_set_info_async,
5836 .o_connect = mdt_obd_connect,
5837 .o_reconnect = mdt_obd_reconnect,
5838 .o_disconnect = mdt_obd_disconnect,
5839 .o_init_export = mdt_init_export,
5840 .o_destroy_export = mdt_destroy_export,
5841 .o_iocontrol = mdt_iocontrol,
5842 .o_postrecov = mdt_obd_postrecov,
5845 static struct lu_device* mdt_device_fini(const struct lu_env *env,
5846 struct lu_device *d)
5848 struct mdt_device *m = mdt_dev(d);
5855 static struct lu_device *mdt_device_free(const struct lu_env *env,
5856 struct lu_device *d)
5858 struct mdt_device *m = mdt_dev(d);
5861 lu_device_fini(&m->mdt_lu_dev);
5867 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
5868 struct lu_device_type *t,
5869 struct lustre_cfg *cfg)
5871 struct lu_device *l;
5872 struct mdt_device *m;
5879 rc = mdt_init0(env, m, t, cfg);
5881 mdt_device_free(env, l);
5886 l = ERR_PTR(-ENOMEM);
5890 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
5891 LU_KEY_INIT(mdt, struct mdt_thread_info);
5893 static void mdt_key_fini(const struct lu_context *ctx,
5894 struct lu_context_key *key, void* data)
5896 struct mdt_thread_info *info = data;
5898 if (info->mti_big_lmm) {
5899 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
5900 info->mti_big_lmm = NULL;
5901 info->mti_big_lmmsize = 0;
5906 /* context key: mdt_thread_key */
5907 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
5909 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
5911 return lu_ucred(info->mti_env);
5914 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
5916 return lu_ucred_check(info->mti_env);
5920 * Enable/disable COS (Commit On Sharing).
5922 * Set/Clear the COS flag in mdt options.
5924 * \param mdt mdt device
5925 * \param val 0 disables COS, other values enable COS
5927 void mdt_enable_cos(struct mdt_device *mdt, int val)
5932 mdt->mdt_opts.mo_cos = !!val;
5933 rc = lu_env_init(&env, LCT_LOCAL);
5934 if (unlikely(rc != 0)) {
5935 CWARN("%s: lu_env initialization failed, cannot "
5936 "sync: rc = %d\n", mdt_obd_name(mdt), rc);
5939 mdt_device_sync(&env, mdt);
5944 * Check COS (Commit On Sharing) status.
5946 * Return COS flag status.
5948 * \param mdt mdt device
5950 int mdt_cos_is_enabled(struct mdt_device *mdt)
5952 return mdt->mdt_opts.mo_cos != 0;
5955 static struct lu_device_type_operations mdt_device_type_ops = {
5956 .ldto_device_alloc = mdt_device_alloc,
5957 .ldto_device_free = mdt_device_free,
5958 .ldto_device_fini = mdt_device_fini
5961 static struct lu_device_type mdt_device_type = {
5962 .ldt_tags = LU_DEVICE_MD,
5963 .ldt_name = LUSTRE_MDT_NAME,
5964 .ldt_ops = &mdt_device_type_ops,
5965 .ldt_ctx_tags = LCT_MD_THREAD
5968 static int __init mdt_mod_init(void)
5972 CLASSERT(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") ==
5973 FID_NOBRACE_LEN + 1);
5974 CLASSERT(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") ==
5976 rc = lu_kmem_init(mdt_caches);
5980 rc = mds_mod_init();
5984 rc = class_register_type(&mdt_obd_device_ops, NULL, true, NULL,
5985 LUSTRE_MDT_NAME, &mdt_device_type);
5990 lu_kmem_fini(mdt_caches);
5997 static void __exit mdt_mod_exit(void)
5999 class_unregister_type(LUSTRE_MDT_NAME);
6001 lu_kmem_fini(mdt_caches);
6004 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
6005 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
6006 MODULE_LICENSE("GPL");
6008 cfs_module(mdt, LUSTRE_VERSION_STRING, mdt_mod_init, mdt_mod_exit);