4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2010, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mdt/mdt_handler.c
38 * Lustre Metadata Target (mdt) request handler
40 * Author: Peter Braam <braam@clusterfs.com>
41 * Author: Andreas Dilger <adilger@clusterfs.com>
42 * Author: Phil Schwan <phil@clusterfs.com>
43 * Author: Mike Shaver <shaver@clusterfs.com>
44 * Author: Nikita Danilov <nikita@clusterfs.com>
45 * Author: Huang Hua <huanghua@clusterfs.com>
46 * Author: Yury Umanets <umka@clusterfs.com>
49 #define DEBUG_SUBSYSTEM S_MDS
51 #include <linux/module.h>
53 * struct OBD_{ALLOC,FREE}*()
55 #include <obd_support.h>
56 #include <lustre_ioctl.h>
57 /* struct ptlrpc_request */
58 #include <lustre_net.h>
59 /* struct obd_export */
60 #include <lustre_export.h>
61 /* struct obd_device */
64 #include <dt_object.h>
65 #include <lustre_mds.h>
66 #include <lustre_log.h>
67 #include "mdt_internal.h"
68 #include <lustre_acl.h>
69 #include <lustre_param.h>
70 #include <lustre_quota.h>
71 #include <lustre_lfsck.h>
73 mdl_mode_t mdt_mdl_lock_modes[] = {
74 [LCK_MINMODE] = MDL_MINMODE,
81 [LCK_GROUP] = MDL_GROUP
84 ldlm_mode_t mdt_dlm_lock_modes[] = {
85 [MDL_MINMODE] = LCK_MINMODE,
92 [MDL_GROUP] = LCK_GROUP
95 static struct mdt_device *mdt_dev(struct lu_device *d);
96 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
98 static const struct lu_object_operations mdt_obj_ops;
100 /* Slab for MDT object allocation */
101 static struct kmem_cache *mdt_object_kmem;
103 /* For HSM restore handles */
104 struct kmem_cache *mdt_hsm_cdt_kmem;
106 /* For HSM request handles */
107 struct kmem_cache *mdt_hsm_car_kmem;
109 static struct lu_kmem_descr mdt_caches[] = {
111 .ckd_cache = &mdt_object_kmem,
112 .ckd_name = "mdt_obj",
113 .ckd_size = sizeof(struct mdt_object)
116 .ckd_cache = &mdt_hsm_cdt_kmem,
117 .ckd_name = "mdt_cdt_restore_handle",
118 .ckd_size = sizeof(struct cdt_restore_handle)
121 .ckd_cache = &mdt_hsm_car_kmem,
122 .ckd_name = "mdt_cdt_agent_req",
123 .ckd_size = sizeof(struct cdt_agent_req)
130 int mdt_get_disposition(struct ldlm_reply *rep, int flag)
134 return (rep->lock_policy_res1 & flag);
137 void mdt_clear_disposition(struct mdt_thread_info *info,
138 struct ldlm_reply *rep, int flag)
141 info->mti_opdata &= ~flag;
142 tgt_opdata_clear(info->mti_env, flag);
145 rep->lock_policy_res1 &= ~flag;
148 void mdt_set_disposition(struct mdt_thread_info *info,
149 struct ldlm_reply *rep, int flag)
152 info->mti_opdata |= flag;
153 tgt_opdata_set(info->mti_env, flag);
156 rep->lock_policy_res1 |= flag;
159 void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm)
161 lh->mlh_pdo_hash = 0;
162 lh->mlh_reg_mode = lm;
163 lh->mlh_rreg_mode = lm;
164 lh->mlh_type = MDT_REG_LOCK;
167 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, ldlm_mode_t lock_mode,
168 const struct lu_name *lname)
170 lh->mlh_reg_mode = lock_mode;
171 lh->mlh_rreg_mode = lock_mode;
172 lh->mlh_type = MDT_PDO_LOCK;
174 if (lu_name_is_valid(lname)) {
175 lh->mlh_pdo_hash = full_name_hash(lname->ln_name,
177 /* XXX Workaround for LU-2856
179 * Zero is a valid return value of full_name_hash, but
180 * several users of mlh_pdo_hash assume a non-zero
181 * hash value. We therefore map zero onto an
182 * arbitrary, but consistent value (1) to avoid
183 * problems further down the road. */
184 if (unlikely(lh->mlh_pdo_hash == 0))
185 lh->mlh_pdo_hash = 1;
187 lh->mlh_pdo_hash = 0;
191 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
192 struct mdt_lock_handle *lh)
198 * Any dir access needs couple of locks:
200 * 1) on part of dir we gonna take lookup/modify;
202 * 2) on whole dir to protect it from concurrent splitting and/or to
203 * flush client's cache for readdir().
205 * so, for a given mode and object this routine decides what lock mode
206 * to use for lock #2:
208 * 1) if caller's gonna lookup in dir then we need to protect dir from
209 * being splitted only - LCK_CR
211 * 2) if caller's gonna modify dir then we need to protect dir from
212 * being splitted and to flush cache - LCK_CW
214 * 3) if caller's gonna modify dir and that dir seems ready for
215 * splitting then we need to protect it from any type of access
216 * (lookup/modify/split) - LCK_EX --bzzz
219 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
220 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
223 * Ask underlaying level its opinion about preferable PDO lock mode
224 * having access type passed as regular lock mode:
226 * - MDL_MINMODE means that lower layer does not want to specify lock
229 * - MDL_NL means that no PDO lock should be taken. This is used in some
230 * cases. Say, for non-splittable directories no need to use PDO locks
233 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
234 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
236 if (mode != MDL_MINMODE) {
237 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
240 * Lower layer does not want to specify locking mode. We do it
241 * our selves. No special protection is needed, just flush
242 * client's cache on modification and allow concurrent
245 switch (lh->mlh_reg_mode) {
247 lh->mlh_pdo_mode = LCK_EX;
250 lh->mlh_pdo_mode = LCK_CR;
253 lh->mlh_pdo_mode = LCK_CW;
256 CERROR("Not expected lock type (0x%x)\n",
257 (int)lh->mlh_reg_mode);
262 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
266 static int mdt_getstatus(struct tgt_session_info *tsi)
268 struct mdt_thread_info *info = tsi2mdt_info(tsi);
269 struct mdt_device *mdt = info->mti_mdt;
270 struct mdt_body *repbody;
275 rc = mdt_check_ucred(info);
277 GOTO(out, rc = err_serious(rc));
279 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK))
280 GOTO(out, rc = err_serious(-ENOMEM));
282 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
283 repbody->fid1 = mdt->mdt_md_root_fid;
284 repbody->valid |= OBD_MD_FLID;
286 if (tsi->tsi_tgt->lut_mds_capa &&
287 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
288 struct mdt_object *root;
289 struct lustre_capa *capa;
291 root = mdt_object_find(info->mti_env, mdt, &repbody->fid1);
293 GOTO(out, rc = PTR_ERR(root));
295 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
297 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
298 rc = mo_capa_get(info->mti_env, mdt_object_child(root), capa,
300 mdt_object_put(info->mti_env, root);
302 repbody->valid |= OBD_MD_FLMDSCAPA;
306 mdt_thread_info_fini(info);
310 static int mdt_statfs(struct tgt_session_info *tsi)
312 struct ptlrpc_request *req = tgt_ses_req(tsi);
313 struct mdt_thread_info *info = tsi2mdt_info(tsi);
314 struct md_device *next = info->mti_mdt->mdt_child;
315 struct ptlrpc_service_part *svcpt;
316 struct obd_statfs *osfs;
321 svcpt = req->rq_rqbd->rqbd_svcpt;
323 /* This will trigger a watchdog timeout */
324 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
325 (MDT_SERVICE_WATCHDOG_FACTOR *
326 at_get(&svcpt->scp_at_estimate)) + 1);
328 rc = mdt_check_ucred(info);
330 GOTO(out, rc = err_serious(rc));
332 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
333 GOTO(out, rc = err_serious(-ENOMEM));
335 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
337 GOTO(out, rc = -EPROTO);
339 /** statfs information are cached in the mdt_device */
340 if (cfs_time_before_64(info->mti_mdt->mdt_osfs_age,
341 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS))) {
342 /** statfs data is too old, get up-to-date one */
343 rc = next->md_ops->mdo_statfs(info->mti_env, next, osfs);
346 spin_lock(&info->mti_mdt->mdt_osfs_lock);
347 info->mti_mdt->mdt_osfs = *osfs;
348 info->mti_mdt->mdt_osfs_age = cfs_time_current_64();
349 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
351 /** use cached statfs data */
352 spin_lock(&info->mti_mdt->mdt_osfs_lock);
353 *osfs = info->mti_mdt->mdt_osfs;
354 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
358 mdt_counter_incr(req, LPROC_MDT_STATFS);
360 mdt_thread_info_fini(info);
365 * Pack SOM attributes into the reply.
366 * Call under a DLM UPDATE lock.
368 static void mdt_pack_size2body(struct mdt_thread_info *info,
369 struct mdt_object *mo)
372 struct md_attr *ma = &info->mti_attr;
374 LASSERT(ma->ma_attr.la_valid & LA_MODE);
375 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
377 /* Check if Size-on-MDS is supported, if this is a regular file,
378 * if SOM is enabled on the object and if SOM cache exists and valid.
379 * Otherwise do not pack Size-on-MDS attributes to the reply. */
380 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
381 !S_ISREG(ma->ma_attr.la_mode) ||
382 !mdt_object_is_som_enabled(mo) ||
383 !(ma->ma_valid & MA_SOM))
386 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
387 b->size = ma->ma_som->msd_size;
388 b->blocks = ma->ma_som->msd_blocks;
391 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
392 const struct lu_attr *attr, const struct lu_fid *fid)
394 struct md_attr *ma = &info->mti_attr;
396 LASSERT(ma->ma_valid & MA_INODE);
398 b->atime = attr->la_atime;
399 b->mtime = attr->la_mtime;
400 b->ctime = attr->la_ctime;
401 b->mode = attr->la_mode;
402 b->size = attr->la_size;
403 b->blocks = attr->la_blocks;
404 b->uid = attr->la_uid;
405 b->gid = attr->la_gid;
406 b->flags = attr->la_flags;
407 b->nlink = attr->la_nlink;
408 b->rdev = attr->la_rdev;
410 /*XXX should pack the reply body according to lu_valid*/
411 b->valid |= OBD_MD_FLCTIME | OBD_MD_FLUID |
412 OBD_MD_FLGID | OBD_MD_FLTYPE |
413 OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLFLAGS |
414 OBD_MD_FLATIME | OBD_MD_FLMTIME ;
416 if (!S_ISREG(attr->la_mode)) {
417 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
418 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
419 /* means no objects are allocated on osts. */
420 LASSERT(!(ma->ma_valid & MA_LOV));
421 /* just ignore blocks occupied by extend attributes on MDS */
423 /* if no object is allocated on osts, the size on mds is valid. b=22272 */
424 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
425 } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL &&
426 ma->ma_lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) {
427 /* A released file stores its size on MDS. */
428 /* But return 1 block for released file, unless tools like tar
429 * will consider it fully sparse. (LU-3864)
431 if (unlikely(b->size == 0))
435 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
440 b->valid |= OBD_MD_FLID;
441 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, size="LPU64"\n",
442 PFID(fid), b->nlink, b->mode, b->size);
446 mdt_body_reverse_idmap(info, b);
448 if (fid != NULL && (b->valid & OBD_MD_FLSIZE))
449 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
450 PFID(fid), (unsigned long long)b->size);
453 static inline int mdt_body_has_lov(const struct lu_attr *la,
454 const struct mdt_body *body)
456 return ((S_ISREG(la->la_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
457 (S_ISDIR(la->la_mode) && (body->valid & OBD_MD_FLDIREA )) );
460 void mdt_client_compatibility(struct mdt_thread_info *info)
462 struct mdt_body *body;
463 struct ptlrpc_request *req = mdt_info_req(info);
464 struct obd_export *exp = req->rq_export;
465 struct md_attr *ma = &info->mti_attr;
466 struct lu_attr *la = &ma->ma_attr;
469 if (exp_connect_layout(exp))
470 /* the client can deal with 16-bit lmm_stripe_count */
473 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
475 if (!mdt_body_has_lov(la, body))
478 /* now we have a reply with a lov for a client not compatible with the
479 * layout lock so we have to clean the layout generation number */
480 if (S_ISREG(la->la_mode))
481 ma->ma_lmm->lmm_layout_gen = 0;
485 int mdt_attr_get_eabuf_size(struct mdt_thread_info *info, struct mdt_object *o)
487 const struct lu_env *env = info->mti_env;
490 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
499 /* Is it a directory? Let's check for the LMV as well */
500 if (S_ISDIR(lu_object_attr(&mdt_object_child(o)->mo_lu))) {
501 rc2 = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
503 if ((rc2 < 0 && rc2 != -ENODATA) || (rc2 > rc))
511 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
514 const struct lu_env *env = info->mti_env;
518 LASSERT(info->mti_big_lmm_used == 0);
519 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
523 /* big_lmm may need to be grown */
524 if (info->mti_big_lmmsize < rc) {
525 int size = size_roundup_power2(rc);
527 if (info->mti_big_lmmsize > 0) {
528 /* free old buffer */
529 LASSERT(info->mti_big_lmm);
530 OBD_FREE_LARGE(info->mti_big_lmm,
531 info->mti_big_lmmsize);
532 info->mti_big_lmm = NULL;
533 info->mti_big_lmmsize = 0;
536 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
537 if (info->mti_big_lmm == NULL)
539 info->mti_big_lmmsize = size;
541 LASSERT(info->mti_big_lmmsize >= rc);
543 info->mti_buf.lb_buf = info->mti_big_lmm;
544 info->mti_buf.lb_len = info->mti_big_lmmsize;
545 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
550 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
551 struct md_attr *ma, const char *name)
553 struct md_object *next = mdt_object_child(o);
554 struct lu_buf *buf = &info->mti_buf;
557 if (strcmp(name, XATTR_NAME_LOV) == 0) {
558 buf->lb_buf = ma->ma_lmm;
559 buf->lb_len = ma->ma_lmm_size;
560 LASSERT(!(ma->ma_valid & MA_LOV));
561 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
562 buf->lb_buf = ma->ma_lmv;
563 buf->lb_len = ma->ma_lmv_size;
564 LASSERT(!(ma->ma_valid & MA_LMV));
565 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
566 buf->lb_buf = ma->ma_lmv;
567 buf->lb_len = ma->ma_lmv_size;
568 LASSERT(!(ma->ma_valid & MA_LMV_DEF));
573 rc = mo_xattr_get(info->mti_env, next, buf, name);
575 if (strcmp(name, XATTR_NAME_LOV) == 0) {
576 ma->ma_lmm_size = rc;
577 ma->ma_valid |= MA_LOV;
578 } else if (strcmp(name, XATTR_NAME_LMV) == 0) {
579 ma->ma_lmv_size = rc;
580 ma->ma_valid |= MA_LMV;
581 } else if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
582 ma->ma_lmv_size = rc;
583 ma->ma_valid |= MA_LMV_DEF;
587 } else if (rc == -ENODATA) {
590 } else if (rc == -ERANGE) {
591 /* Default LMV has fixed size, so it must be able to fit
592 * in the original buffer */
593 if (strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0)
595 rc = mdt_big_xattr_get(info, o, name);
597 info->mti_big_lmm_used = 1;
598 if (!strcmp(name, XATTR_NAME_LOV)) {
599 ma->ma_valid |= MA_LOV;
600 ma->ma_lmm = info->mti_big_lmm;
601 ma->ma_lmm_size = rc;
602 } else if (!strcmp(name, XATTR_NAME_LMV)) {
603 ma->ma_valid |= MA_LMV;
604 ma->ma_lmv = info->mti_big_lmm;
605 ma->ma_lmv_size = rc;
610 /* update mdt_max_mdsize so all clients
611 * will be aware about that */
612 if (info->mti_mdt->mdt_max_mdsize < rc)
613 info->mti_mdt->mdt_max_mdsize = rc;
621 static int mdt_attr_get_pfid(struct mdt_thread_info *info,
622 struct mdt_object *o, struct lu_fid *pfid)
624 struct lu_buf *buf = &info->mti_buf;
625 struct link_ea_header *leh;
626 struct link_ea_entry *lee;
630 buf->lb_buf = info->mti_big_lmm;
631 buf->lb_len = info->mti_big_lmmsize;
632 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
633 buf, XATTR_NAME_LINK);
634 /* ignore errors, MA_PFID won't be set and it is
635 * up to the caller to treat this as an error */
636 if (rc == -ERANGE || buf->lb_len == 0) {
637 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
638 buf->lb_buf = info->mti_big_lmm;
639 buf->lb_len = info->mti_big_lmmsize;
644 if (rc < sizeof(*leh)) {
645 CERROR("short LinkEA on "DFID": rc = %d\n",
646 PFID(mdt_object_fid(o)), rc);
650 leh = (struct link_ea_header *) buf->lb_buf;
651 lee = (struct link_ea_entry *)(leh + 1);
652 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
653 leh->leh_magic = LINK_EA_MAGIC;
654 leh->leh_reccount = __swab32(leh->leh_reccount);
655 leh->leh_len = __swab64(leh->leh_len);
657 if (leh->leh_magic != LINK_EA_MAGIC)
659 if (leh->leh_reccount == 0)
662 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
663 fid_be_to_cpu(pfid, pfid);
668 int mdt_attr_get_complex(struct mdt_thread_info *info,
669 struct mdt_object *o, struct md_attr *ma)
671 const struct lu_env *env = info->mti_env;
672 struct md_object *next = mdt_object_child(o);
673 struct lu_buf *buf = &info->mti_buf;
674 u32 mode = lu_object_attr(&next->mo_lu);
675 int need = ma->ma_need;
681 if (need & MA_INODE) {
682 ma->ma_need = MA_INODE;
683 rc = mo_attr_get(env, next, ma);
686 ma->ma_valid |= MA_INODE;
689 if (need & MA_PFID) {
690 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
692 ma->ma_valid |= MA_PFID;
693 /* ignore this error, parent fid is not mandatory */
697 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
698 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
703 if (need & MA_LMV && S_ISDIR(mode)) {
704 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_LMV);
709 if (need & MA_LMV_DEF && S_ISDIR(mode)) {
710 rc = mdt_stripe_get(info, o, ma, XATTR_NAME_DEFAULT_LMV);
715 if (need & MA_SOM && S_ISREG(mode)) {
716 buf->lb_buf = info->mti_xattr_buf;
717 buf->lb_len = sizeof(info->mti_xattr_buf);
718 CLASSERT(sizeof(struct som_attrs) <=
719 sizeof(info->mti_xattr_buf));
720 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_SOM);
721 rc2 = lustre_buf2som(info->mti_xattr_buf, rc2, ma->ma_som);
723 ma->ma_valid |= MA_SOM;
724 else if (rc2 < 0 && rc2 != -ENODATA)
728 if (need & MA_HSM && S_ISREG(mode)) {
729 buf->lb_buf = info->mti_xattr_buf;
730 buf->lb_len = sizeof(info->mti_xattr_buf);
731 CLASSERT(sizeof(struct hsm_attrs) <=
732 sizeof(info->mti_xattr_buf));
733 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
734 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
736 ma->ma_valid |= MA_HSM;
737 else if (rc2 < 0 && rc2 != -ENODATA)
741 #ifdef CONFIG_FS_POSIX_ACL
742 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
743 buf->lb_buf = ma->ma_acl;
744 buf->lb_len = ma->ma_acl_size;
745 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
747 ma->ma_acl_size = rc2;
748 ma->ma_valid |= MA_ACL_DEF;
749 } else if (rc2 == -ENODATA) {
758 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = "LPX64" ma_lmm=%p\n",
759 rc, ma->ma_valid, ma->ma_lmm);
763 static int mdt_getattr_internal(struct mdt_thread_info *info,
764 struct mdt_object *o, int ma_need)
766 struct md_object *next = mdt_object_child(o);
767 const struct mdt_body *reqbody = info->mti_body;
768 struct ptlrpc_request *req = mdt_info_req(info);
769 struct md_attr *ma = &info->mti_attr;
770 struct lu_attr *la = &ma->ma_attr;
771 struct req_capsule *pill = info->mti_pill;
772 const struct lu_env *env = info->mti_env;
773 struct mdt_body *repbody;
774 struct lu_buf *buffer = &info->mti_buf;
779 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
780 RETURN(err_serious(-ENOMEM));
782 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
786 if (mdt_object_remote(o)) {
787 /* This object is located on remote node.*/
788 /* Return -EIO for old client */
789 if (!mdt_is_dne_client(req->rq_export))
790 GOTO(out, rc = -EIO);
792 repbody->fid1 = *mdt_object_fid(o);
793 repbody->valid = OBD_MD_FLID | OBD_MD_MDS;
797 if (reqbody->eadatasize > 0) {
798 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
799 if (buffer->lb_buf == NULL)
800 GOTO(out, rc = -EPROTO);
801 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD,
804 buffer->lb_buf = NULL;
806 ma_need &= ~(MA_LOV | MA_LMV);
807 CDEBUG(D_INFO, "%s: RPC from %s: does not need LOVEA.\n",
808 mdt_obd_name(info->mti_mdt),
809 req->rq_export->exp_client_uuid.uuid);
812 /* If it is dir object and client require MEA, then we got MEA */
813 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
814 (reqbody->valid & (OBD_MD_MEA | OBD_MD_DEFAULT_MEA))) {
815 /* Assumption: MDT_MD size is enough for lmv size. */
816 ma->ma_lmv = buffer->lb_buf;
817 ma->ma_lmv_size = buffer->lb_len;
818 ma->ma_need = MA_INODE;
819 if (ma->ma_lmv_size > 0) {
820 if (reqbody->valid & OBD_MD_MEA)
821 ma->ma_need |= MA_LMV;
822 else if (reqbody->valid & OBD_MD_DEFAULT_MEA)
823 ma->ma_need |= MA_LMV_DEF;
826 ma->ma_lmm = buffer->lb_buf;
827 ma->ma_lmm_size = buffer->lb_len;
828 ma->ma_need = MA_INODE | MA_HSM;
829 if (ma->ma_lmm_size > 0)
830 ma->ma_need |= MA_LOV;
833 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
834 reqbody->valid & OBD_MD_FLDIREA &&
835 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
836 /* get default stripe info for this dir. */
837 ma->ma_need |= MA_LOV_DEF;
839 ma->ma_need |= ma_need;
840 if (ma->ma_need & MA_SOM)
841 ma->ma_som = &info->mti_u.som.data;
843 rc = mdt_attr_get_complex(info, o, ma);
845 CERROR("%s: getattr error for "DFID": rc = %d\n",
846 mdt_obd_name(info->mti_mdt),
847 PFID(mdt_object_fid(o)), rc);
851 /* if file is released, check if a restore is running */
852 if ((ma->ma_valid & MA_HSM) && (ma->ma_hsm.mh_flags & HS_RELEASED) &&
853 mdt_hsm_restore_is_running(info, mdt_object_fid(o))) {
854 repbody->t_state = MS_RESTORE;
855 repbody->valid |= OBD_MD_TSTATE;
858 is_root = lu_fid_eq(mdt_object_fid(o), &info->mti_mdt->mdt_md_root_fid);
860 /* the Lustre protocol supposes to return default striping
861 * on the user-visible root if explicitly requested */
862 if ((ma->ma_valid & MA_LOV) == 0 && S_ISDIR(la->la_mode) &&
863 (ma->ma_need & MA_LOV_DEF && is_root) && ma->ma_need & MA_LOV) {
864 struct lu_fid rootfid;
865 struct mdt_object *root;
866 struct mdt_device *mdt = info->mti_mdt;
868 rc = dt_root_get(env, mdt->mdt_bottom, &rootfid);
871 root = mdt_object_find(env, mdt, &rootfid);
873 RETURN(PTR_ERR(root));
874 rc = mdt_stripe_get(info, root, ma, XATTR_NAME_LOV);
875 mdt_object_put(info->mti_env, root);
877 CERROR("%s: getattr error for "DFID": rc = %d\n",
878 mdt_obd_name(info->mti_mdt),
879 PFID(mdt_object_fid(o)), rc);
884 if (likely(ma->ma_valid & MA_INODE))
885 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
889 if (mdt_body_has_lov(la, reqbody)) {
890 if (ma->ma_valid & MA_LOV) {
891 LASSERT(ma->ma_lmm_size);
892 repbody->eadatasize = ma->ma_lmm_size;
893 if (S_ISDIR(la->la_mode))
894 repbody->valid |= OBD_MD_FLDIREA;
896 repbody->valid |= OBD_MD_FLEASIZE;
897 mdt_dump_lmm(D_INFO, ma->ma_lmm, repbody->valid);
899 if (ma->ma_valid & MA_LMV) {
900 LASSERT(S_ISDIR(la->la_mode));
901 mdt_dump_lmv(D_INFO, ma->ma_lmv);
902 repbody->eadatasize = ma->ma_lmv_size;
903 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
905 if (ma->ma_valid & MA_LMV_DEF) {
906 LASSERT(S_ISDIR(la->la_mode));
907 repbody->eadatasize = ma->ma_lmv_size;
908 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_DEFAULT_MEA);
910 } else if (S_ISLNK(la->la_mode) &&
911 reqbody->valid & OBD_MD_LINKNAME) {
912 buffer->lb_buf = ma->ma_lmm;
913 /* eadatasize from client includes NULL-terminator, so
914 * there is no need to read it */
915 buffer->lb_len = reqbody->eadatasize - 1;
916 rc = mo_readlink(env, next, buffer);
917 if (unlikely(rc <= 0)) {
918 CERROR("%s: readlink failed for "DFID": rc = %d\n",
919 mdt_obd_name(info->mti_mdt),
920 PFID(mdt_object_fid(o)), rc);
923 int print_limit = min_t(int, PAGE_CACHE_SIZE - 128, rc);
925 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
927 repbody->valid |= OBD_MD_LINKNAME;
928 /* we need to report back size with NULL-terminator
929 * because client expects that */
930 repbody->eadatasize = rc + 1;
931 if (repbody->eadatasize != reqbody->eadatasize)
932 CDEBUG(D_INODE, "%s: Read shorter symlink %d "
933 "on "DFID ", expected %d\n",
934 mdt_obd_name(info->mti_mdt),
935 rc, PFID(mdt_object_fid(o)),
936 reqbody->eadatasize - 1);
938 ((char *)ma->ma_lmm)[rc] = 0;
940 /* If the total CDEBUG() size is larger than a page, it
941 * will print a warning to the console, avoid this by
942 * printing just the last part of the symlink. */
943 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
944 print_limit < rc ? "..." : "", print_limit,
945 (char *)ma->ma_lmm + rc - print_limit, rc);
950 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
951 repbody->max_cookiesize = 0;
952 repbody->max_mdsize = info->mti_mdt->mdt_max_mdsize;
953 repbody->valid |= OBD_MD_FLMODEASIZE;
954 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
955 "MAX_COOKIE to : %d:%d\n", repbody->max_mdsize,
956 repbody->max_cookiesize);
959 if (exp_connect_rmtclient(info->mti_exp) &&
960 reqbody->valid & OBD_MD_FLRMTPERM) {
961 void *buf = req_capsule_server_get(pill, &RMF_ACL);
963 /* mdt_getattr_lock only */
964 rc = mdt_pack_remote_perm(info, o, buf);
966 repbody->valid &= ~OBD_MD_FLRMTPERM;
967 repbody->aclsize = 0;
970 repbody->valid |= OBD_MD_FLRMTPERM;
971 repbody->aclsize = sizeof(struct mdt_remote_perm);
974 #ifdef CONFIG_FS_POSIX_ACL
975 else if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
976 (reqbody->valid & OBD_MD_FLACL)) {
977 buffer->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
978 buffer->lb_len = req_capsule_get_size(pill,
979 &RMF_ACL, RCL_SERVER);
980 if (buffer->lb_len > 0) {
981 rc = mo_xattr_get(env, next, buffer,
982 XATTR_NAME_ACL_ACCESS);
984 if (rc == -ENODATA) {
985 repbody->aclsize = 0;
986 repbody->valid |= OBD_MD_FLACL;
988 } else if (rc == -EOPNOTSUPP) {
991 CERROR("%s: unable to read "DFID
993 mdt_obd_name(info->mti_mdt),
994 PFID(mdt_object_fid(o)), rc);
997 repbody->aclsize = rc;
998 repbody->valid |= OBD_MD_FLACL;
1005 if (reqbody->valid & OBD_MD_FLMDSCAPA &&
1006 info->mti_mdt->mdt_lut.lut_mds_capa &&
1007 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
1008 struct lustre_capa *capa;
1010 capa = req_capsule_server_get(pill, &RMF_CAPA1);
1012 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
1013 rc = mo_capa_get(env, next, capa, 0);
1016 repbody->valid |= OBD_MD_FLMDSCAPA;
1021 mdt_counter_incr(req, LPROC_MDT_GETATTR);
1026 static int mdt_renew_capa(struct mdt_thread_info *info)
1028 struct mdt_object *obj = info->mti_object;
1029 struct mdt_body *body;
1030 struct lustre_capa *capa, *c;
1034 /* if object doesn't exist, or server has disabled capability,
1035 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
1038 if (!obj || !info->mti_mdt->mdt_lut.lut_oss_capa ||
1039 !(exp_connect_flags(info->mti_exp) & OBD_CONNECT_OSS_CAPA))
1042 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1043 LASSERT(body != NULL);
1045 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
1048 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
1052 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
1054 body->valid |= OBD_MD_FLOSSCAPA;
1058 static int mdt_getattr(struct tgt_session_info *tsi)
1060 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1061 struct mdt_object *obj = info->mti_object;
1062 struct req_capsule *pill = info->mti_pill;
1063 struct mdt_body *reqbody;
1064 struct mdt_body *repbody;
1068 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
1071 if (reqbody->valid & OBD_MD_FLOSSCAPA) {
1072 rc = req_capsule_server_pack(pill);
1074 RETURN(err_serious(rc));
1075 rc = mdt_renew_capa(info);
1076 GOTO(out_shrink, rc);
1079 LASSERT(obj != NULL);
1080 LASSERT(lu_object_assert_exists(&obj->mot_obj));
1082 /* Unlike intent case where we need to pre-fill out buffers early on
1083 * in intent policy for ldlm reasons, here we can have a much better
1084 * guess at EA size by just reading it from disk.
1085 * Exceptions are readdir and (missing) directory striping */
1087 if (reqbody->valid & OBD_MD_LINKNAME) {
1088 /* No easy way to know how long is the symlink, but it cannot
1089 * be more than PATH_MAX, so we allocate +1 */
1092 /* A special case for fs ROOT: getattr there might fetch
1093 * default EA for entire fs, not just for this dir!
1095 } else if (lu_fid_eq(mdt_object_fid(obj),
1096 &info->mti_mdt->mdt_md_root_fid) &&
1097 (reqbody->valid & OBD_MD_FLDIREA) &&
1098 (lustre_msg_get_opc(mdt_info_req(info)->rq_reqmsg) ==
1100 /* Should the default strping be bigger, mdt_fix_reply
1101 * will reallocate */
1102 rc = DEF_REP_MD_SIZE;
1104 /* Read the actual EA size from disk */
1105 rc = mdt_attr_get_eabuf_size(info, obj);
1109 GOTO(out_shrink, rc);
1111 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, rc);
1113 rc = req_capsule_server_pack(pill);
1114 if (unlikely(rc != 0))
1115 GOTO(out, rc = err_serious(rc));
1117 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1118 LASSERT(repbody != NULL);
1119 repbody->eadatasize = 0;
1120 repbody->aclsize = 0;
1122 if (reqbody->valid & OBD_MD_FLRMTPERM)
1123 rc = mdt_init_ucred(info, reqbody);
1125 rc = mdt_check_ucred(info);
1127 GOTO(out_shrink, rc);
1129 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1132 * Don't check capability at all, because rename might getattr for
1133 * remote obj, and at that time no capability is available.
1135 mdt_set_capainfo(info, 1, &reqbody->fid1, BYPASS_CAPA);
1136 rc = mdt_getattr_internal(info, obj, 0);
1137 if (reqbody->valid & OBD_MD_FLRMTPERM)
1138 mdt_exit_ucred(info);
1141 mdt_client_compatibility(info);
1142 rc2 = mdt_fix_reply(info);
1146 mdt_thread_info_fini(info);
1150 static int mdt_is_subdir(struct tgt_session_info *tsi)
1152 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1153 struct mdt_object *o = info->mti_object;
1154 struct req_capsule *pill = info->mti_pill;
1155 const struct mdt_body *body = info->mti_body;
1156 struct mdt_body *repbody;
1162 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1165 * We save last checked parent fid to @repbody->fid1 for remote
1168 LASSERT(fid_is_sane(&body->fid2));
1169 LASSERT(mdt_object_exists(o) && !mdt_object_remote(o));
1170 rc = mdo_is_subdir(info->mti_env, mdt_object_child(o),
1171 &body->fid2, &repbody->fid1);
1172 if (rc == 0 || rc == -EREMOTE)
1173 repbody->valid |= OBD_MD_FLID;
1175 mdt_thread_info_fini(info);
1179 static int mdt_swap_layouts(struct tgt_session_info *tsi)
1181 struct mdt_thread_info *info;
1182 struct ptlrpc_request *req = tgt_ses_req(tsi);
1183 struct obd_export *exp = req->rq_export;
1184 struct mdt_object *o1, *o2, *o;
1185 struct mdt_lock_handle *lh1, *lh2;
1186 struct mdc_swap_layouts *msl;
1190 /* client does not support layout lock, so layout swaping
1192 * FIXME: there is a problem for old clients which don't support
1193 * layout lock yet. If those clients have already opened the file
1194 * they won't be notified at all so that old layout may still be
1195 * used to do IO. This can be fixed after file release is landed by
1196 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1197 if (!exp_connect_layout(exp))
1198 RETURN(-EOPNOTSUPP);
1200 info = tsi2mdt_info(tsi);
1202 if (info->mti_dlm_req != NULL)
1203 ldlm_request_cancel(req, info->mti_dlm_req, 0);
1205 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA1, RCL_CLIENT))
1206 mdt_set_capainfo(info, 0, &info->mti_body->fid1,
1207 req_capsule_client_get(info->mti_pill,
1210 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA2, RCL_CLIENT))
1211 mdt_set_capainfo(info, 1, &info->mti_body->fid2,
1212 req_capsule_client_get(info->mti_pill,
1215 o1 = info->mti_object;
1216 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1217 &info->mti_body->fid2);
1219 GOTO(out, rc = PTR_ERR(o));
1221 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1222 GOTO(put, rc = -ENOENT);
1224 rc = lu_fid_cmp(&info->mti_body->fid1, &info->mti_body->fid2);
1225 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1231 /* permission check. Make sure the calling process having permission
1232 * to write both files. */
1233 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1238 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1243 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1245 GOTO(put, rc = -EPROTO);
1247 lh1 = &info->mti_lh[MDT_LH_NEW];
1248 mdt_lock_reg_init(lh1, LCK_EX);
1249 lh2 = &info->mti_lh[MDT_LH_OLD];
1250 mdt_lock_reg_init(lh2, LCK_EX);
1252 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
1253 MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK);
1257 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
1258 MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK);
1262 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1263 mdt_object_child(o2), msl->msl_flags);
1266 mdt_object_unlock(info, o2, lh2, rc);
1268 mdt_object_unlock(info, o1, lh1, rc);
1270 mdt_object_put(info->mti_env, o);
1272 mdt_thread_info_fini(info);
1276 static int mdt_raw_lookup(struct mdt_thread_info *info,
1277 struct mdt_object *parent,
1278 const struct lu_name *lname,
1279 struct ldlm_reply *ldlm_rep)
1281 struct md_object *next = mdt_object_child(info->mti_object);
1282 const struct mdt_body *reqbody = info->mti_body;
1283 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1284 struct mdt_body *repbody;
1288 if (reqbody->valid != OBD_MD_FLID)
1291 LASSERT(!info->mti_cross_ref);
1293 /* Only got the fid of this obj by name */
1294 fid_zero(child_fid);
1295 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
1298 /* XXX is raw_lookup possible as intent operation? */
1301 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1304 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1306 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1309 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1310 repbody->fid1 = *child_fid;
1311 repbody->valid = OBD_MD_FLID;
1317 * UPDATE lock should be taken against parent, and be release before exit;
1318 * child_bits lock should be taken against child, and be returned back:
1319 * (1)normal request should release the child lock;
1320 * (2)intent request will grant the lock to client.
1322 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1323 struct mdt_lock_handle *lhc,
1325 struct ldlm_reply *ldlm_rep)
1327 struct ptlrpc_request *req = mdt_info_req(info);
1328 struct mdt_body *reqbody = NULL;
1329 struct mdt_object *parent = info->mti_object;
1330 struct mdt_object *child;
1331 struct md_object *next = mdt_object_child(parent);
1332 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1333 struct lu_name *lname = NULL;
1334 struct mdt_lock_handle *lhp = NULL;
1335 struct ldlm_lock *lock;
1342 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1343 LASSERT(ergo(is_resent,
1344 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1346 LASSERT(parent != NULL);
1348 if (info->mti_cross_ref) {
1349 /* Only getattr on the child. Parent is on another node. */
1350 mdt_set_disposition(info, ldlm_rep,
1351 DISP_LOOKUP_EXECD | DISP_LOOKUP_POS);
1353 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1355 PFID(mdt_object_fid(child)), ldlm_rep);
1358 /* Do not take lock for resent case. */
1359 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1360 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
1361 lhc->mlh_reg_lh.cookie);
1362 LASSERT(fid_res_name_eq(mdt_object_fid(child),
1363 &lock->l_resource->lr_name));
1364 LDLM_LOCK_PUT(lock);
1366 mdt_lock_handle_init(lhc);
1367 mdt_lock_reg_init(lhc, LCK_PR);
1370 * Object's name is on another MDS, no lookup or layout
1371 * lock is needed here but update lock is.
1373 child_bits &= ~(MDS_INODELOCK_LOOKUP |
1374 MDS_INODELOCK_LAYOUT);
1375 child_bits |= MDS_INODELOCK_PERM | MDS_INODELOCK_UPDATE;
1377 rc = mdt_object_lock(info, child, lhc, child_bits,
1383 /* Finally, we can get attr for child. */
1384 if (!mdt_object_exists(child)) {
1385 LU_OBJECT_DEBUG(D_INFO, info->mti_env,
1387 "remote object doesn't exist.\n");
1388 mdt_object_unlock(info, child, lhc, 1);
1392 mdt_set_capainfo(info, 0, mdt_object_fid(child), BYPASS_CAPA);
1393 rc = mdt_getattr_internal(info, child, 0);
1394 if (unlikely(rc != 0))
1395 mdt_object_unlock(info, child, lhc, 1);
1400 lname = &info->mti_name;
1401 mdt_name_unpack(info->mti_pill, &RMF_NAME, lname, MNF_FIX_ANON);
1403 if (lu_name_is_valid(lname)) {
1404 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DNAME", "
1405 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1406 PNAME(lname), ldlm_rep);
1408 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1409 if (unlikely(reqbody == NULL))
1410 RETURN(err_serious(-EPROTO));
1412 *child_fid = reqbody->fid2;
1414 if (unlikely(!fid_is_sane(child_fid)))
1415 RETURN(err_serious(-EINVAL));
1417 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1419 PFID(mdt_object_fid(parent)),
1420 PFID(&reqbody->fid2), ldlm_rep);
1423 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1425 if (unlikely(!mdt_object_exists(parent)) && lu_name_is_valid(lname)) {
1426 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1428 "Parent doesn't exist!\n");
1432 if (mdt_object_remote(parent)) {
1433 CERROR("%s: parent "DFID" is on remote target\n",
1434 mdt_obd_name(info->mti_mdt),
1435 PFID(mdt_object_fid(parent)));
1439 if (lu_name_is_valid(lname)) {
1440 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1447 /* step 1: lock parent only if parent is a directory */
1448 if (S_ISDIR(lu_object_attr(&parent->mot_obj))) {
1449 lhp = &info->mti_lh[MDT_LH_PARENT];
1450 mdt_lock_pdo_init(lhp, LCK_PR, lname);
1451 rc = mdt_object_lock(info, parent, lhp,
1452 MDS_INODELOCK_UPDATE,
1454 if (unlikely(rc != 0))
1458 /* step 2: lookup child's fid by name */
1459 fid_zero(child_fid);
1460 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
1463 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1466 GOTO(out_parent, rc);
1469 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1472 *step 3: find the child object by fid & lock it.
1473 * regardless if it is local or remote.
1475 *Note: LU-3240 (commit 762f2114d282a98ebfa4dbbeea9298a8088ad24e)
1476 * set parent dir fid the same as child fid in getattr by fid case
1477 * we should not lu_object_find() the object again, could lead
1478 * to hung if there is a concurrent unlink destroyed the object.
1480 if (lu_fid_eq(mdt_object_fid(parent), child_fid)) {
1481 mdt_object_get(info->mti_env, parent);
1484 child = mdt_object_find(info->mti_env, info->mti_mdt,
1488 if (unlikely(IS_ERR(child)))
1489 GOTO(out_parent, rc = PTR_ERR(child));
1491 /* Do not take lock for resent case. */
1492 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1493 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
1494 lhc->mlh_reg_lh.cookie);
1496 if (!fid_res_name_eq(mdt_object_fid(child),
1497 &lock->l_resource->lr_name)) {
1498 LASSERTF(fid_res_name_eq(mdt_object_fid(parent),
1499 &lock->l_resource->lr_name),
1500 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1501 PLDLMRES(lock->l_resource),
1502 PFID(mdt_object_fid(parent)));
1503 CWARN("Although resent, but still not get child lock"
1504 "parent:"DFID" child:"DFID"\n",
1505 PFID(mdt_object_fid(parent)),
1506 PFID(mdt_object_fid(child)));
1507 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
1508 LDLM_LOCK_PUT(lock);
1511 LDLM_LOCK_PUT(lock);
1514 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout*2);
1515 mdt_lock_handle_init(lhc);
1516 mdt_lock_reg_init(lhc, LCK_PR);
1519 if (!mdt_object_exists(child)) {
1520 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1522 "Object doesn't exist!\n");
1523 GOTO(out_child, rc = -ENOENT);
1526 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1527 mdt_object_exists(child) && !mdt_object_remote(child)) {
1528 struct md_attr *ma = &info->mti_attr;
1531 ma->ma_need = MA_INODE;
1532 rc = mdt_attr_get_complex(info, child, ma);
1533 if (unlikely(rc != 0))
1534 GOTO(out_child, rc);
1536 /* If the file has not been changed for some time, we
1537 * return not only a LOOKUP lock, but also an UPDATE
1538 * lock and this might save us RPC on later STAT. For
1539 * directories, it also let negative dentry cache start
1540 * working for this dir. */
1541 if (ma->ma_valid & MA_INODE &&
1542 ma->ma_attr.la_valid & LA_CTIME &&
1543 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1544 ma->ma_attr.la_ctime < cfs_time_current_sec())
1545 child_bits |= MDS_INODELOCK_UPDATE;
1548 /* layout lock must be granted in a best-effort way
1549 * for IT operations */
1550 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1551 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1552 exp_connect_layout(info->mti_exp) &&
1553 S_ISREG(lu_object_attr(&child->mot_obj)) &&
1554 !mdt_object_remote(child) && ldlm_rep != NULL) {
1555 /* try to grant layout lock for regular file. */
1561 child_bits |= MDS_INODELOCK_LAYOUT;
1562 /* try layout lock, it may fail to be granted due to
1563 * contention at LOOKUP or UPDATE */
1564 if (!mdt_object_lock_try(info, child, lhc, child_bits,
1566 child_bits &= ~MDS_INODELOCK_LAYOUT;
1567 LASSERT(child_bits != 0);
1568 rc = mdt_object_lock(info, child, lhc,
1569 child_bits, MDT_CROSS_LOCK);
1574 /* Do not enqueue the UPDATE lock from MDT(cross-MDT),
1575 * client will enqueue the lock to the remote MDT */
1576 if (mdt_object_remote(child))
1577 child_bits &= ~MDS_INODELOCK_UPDATE;
1578 rc = mdt_object_lock(info, child, lhc, child_bits,
1581 if (unlikely(rc != 0))
1582 GOTO(out_child, rc);
1585 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1586 /* Get MA_SOM attributes if update lock is given. */
1588 lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_UPDATE &&
1589 S_ISREG(lu_object_attr(&mdt_object_child(child)->mo_lu)))
1592 /* finally, we can get attr for child. */
1593 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1594 rc = mdt_getattr_internal(info, child, ma_need);
1595 if (unlikely(rc != 0)) {
1596 mdt_object_unlock(info, child, lhc, 1);
1598 /* Debugging code. */
1599 LDLM_DEBUG(lock, "Returning lock to client");
1600 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1601 &lock->l_resource->lr_name),
1602 "Lock res_id: "DLDLMRES", fid: "DFID"\n",
1603 PLDLMRES(lock->l_resource),
1604 PFID(mdt_object_fid(child)));
1605 if (mdt_object_exists(child) && !mdt_object_remote(child))
1606 mdt_pack_size2body(info, child);
1609 LDLM_LOCK_PUT(lock);
1613 mdt_object_put(info->mti_env, child);
1616 mdt_object_unlock(info, parent, lhp, 1);
1620 /* normal handler: should release the child lock */
1621 static int mdt_getattr_name(struct tgt_session_info *tsi)
1623 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1624 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1625 struct mdt_body *reqbody;
1626 struct mdt_body *repbody;
1630 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1631 LASSERT(reqbody != NULL);
1632 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1633 LASSERT(repbody != NULL);
1635 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1636 repbody->eadatasize = 0;
1637 repbody->aclsize = 0;
1639 rc = mdt_init_ucred(info, reqbody);
1641 GOTO(out_shrink, rc);
1643 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1644 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1645 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1646 lhc->mlh_reg_lh.cookie = 0;
1648 mdt_exit_ucred(info);
1651 mdt_client_compatibility(info);
1652 rc2 = mdt_fix_reply(info);
1655 mdt_thread_info_fini(info);
1659 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1660 void *karg, void *uarg);
1662 static int mdt_set_info(struct tgt_session_info *tsi)
1664 struct ptlrpc_request *req = tgt_ses_req(tsi);
1667 int keylen, vallen, rc = 0;
1671 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
1673 DEBUG_REQ(D_HA, req, "no set_info key");
1674 RETURN(err_serious(-EFAULT));
1677 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
1680 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
1682 DEBUG_REQ(D_HA, req, "no set_info val");
1683 RETURN(err_serious(-EFAULT));
1686 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
1689 /* Swab any part of val you need to here */
1690 if (KEY_IS(KEY_READ_ONLY)) {
1691 spin_lock(&req->rq_export->exp_lock);
1693 *exp_connect_flags_ptr(req->rq_export) |=
1696 *exp_connect_flags_ptr(req->rq_export) &=
1697 ~OBD_CONNECT_RDONLY;
1698 spin_unlock(&req->rq_export->exp_lock);
1699 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1700 struct changelog_setinfo *cs = val;
1702 if (vallen != sizeof(*cs)) {
1703 CERROR("%s: bad changelog_clear setinfo size %d\n",
1704 tgt_name(tsi->tsi_tgt), vallen);
1707 if (ptlrpc_req_need_swab(req)) {
1708 __swab64s(&cs->cs_recno);
1709 __swab32s(&cs->cs_id);
1712 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, req->rq_export,
1720 static int mdt_readpage(struct tgt_session_info *tsi)
1722 struct mdt_thread_info *info = mdt_th_info(tsi->tsi_env);
1723 struct mdt_object *object = mdt_obj(tsi->tsi_corpus);
1724 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1725 const struct mdt_body *reqbody = tsi->tsi_mdt_body;
1726 struct mdt_body *repbody;
1732 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1733 RETURN(err_serious(-ENOMEM));
1735 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
1736 if (repbody == NULL || reqbody == NULL)
1737 RETURN(err_serious(-EFAULT));
1740 * prepare @rdpg before calling lower layers and transfer itself. Here
1741 * reqbody->size contains offset of where to start to read and
1742 * reqbody->nlink contains number bytes to read.
1744 rdpg->rp_hash = reqbody->size;
1745 if (rdpg->rp_hash != reqbody->size) {
1746 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1747 rdpg->rp_hash, reqbody->size);
1751 rdpg->rp_attrs = reqbody->mode;
1752 if (exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_64BITHASH)
1753 rdpg->rp_attrs |= LUDA_64BITHASH;
1754 rdpg->rp_count = min_t(unsigned int, reqbody->nlink,
1755 exp_max_brw_size(tsi->tsi_exp));
1756 rdpg->rp_npages = (rdpg->rp_count + PAGE_CACHE_SIZE - 1) >>
1758 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1759 if (rdpg->rp_pages == NULL)
1762 for (i = 0; i < rdpg->rp_npages; ++i) {
1763 rdpg->rp_pages[i] = alloc_page(GFP_IOFS);
1764 if (rdpg->rp_pages[i] == NULL)
1765 GOTO(free_rdpg, rc = -ENOMEM);
1768 /* call lower layers to fill allocated pages with directory data */
1769 rc = mo_readpage(tsi->tsi_env, mdt_object_child(object), rdpg);
1771 GOTO(free_rdpg, rc);
1773 /* send pages to client */
1774 rc = tgt_sendpage(tsi, rdpg, rc);
1779 for (i = 0; i < rdpg->rp_npages; i++)
1780 if (rdpg->rp_pages[i] != NULL)
1781 __free_page(rdpg->rp_pages[i]);
1782 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1784 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1790 static int mdt_reint_internal(struct mdt_thread_info *info,
1791 struct mdt_lock_handle *lhc,
1794 struct req_capsule *pill = info->mti_pill;
1795 struct mdt_body *repbody;
1800 rc = mdt_reint_unpack(info, op);
1802 CERROR("Can't unpack reint, rc %d\n", rc);
1803 RETURN(err_serious(rc));
1806 /* for replay (no_create) lmm is not needed, client has it already */
1807 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1808 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1811 /* llog cookies are always 0, the field is kept for compatibility */
1812 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1813 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
1815 rc = req_capsule_server_pack(pill);
1817 CERROR("Can't pack response, rc %d\n", rc);
1818 RETURN(err_serious(rc));
1821 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1822 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1824 repbody->eadatasize = 0;
1825 repbody->aclsize = 0;
1828 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1830 /* for replay no cookkie / lmm need, because client have this already */
1831 if (info->mti_spec.no_create)
1832 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1833 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1835 rc = mdt_init_ucred_reint(info);
1837 GOTO(out_shrink, rc);
1839 rc = mdt_fix_attr_ucred(info, op);
1841 GOTO(out_ucred, rc = err_serious(rc));
1843 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1844 DEBUG_REQ(D_INODE, mdt_info_req(info), "resent opt.");
1845 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1846 GOTO(out_ucred, rc);
1848 rc = mdt_reint_rec(info, lhc);
1851 mdt_exit_ucred(info);
1853 mdt_client_compatibility(info);
1854 rc2 = mdt_fix_reply(info);
1860 static long mdt_reint_opcode(struct ptlrpc_request *req,
1861 const struct req_format **fmt)
1863 struct mdt_device *mdt;
1864 struct mdt_rec_reint *rec;
1867 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
1869 opc = rec->rr_opcode;
1870 DEBUG_REQ(D_INODE, req, "reint opt = %ld", opc);
1871 if (opc < REINT_MAX && fmt[opc] != NULL)
1872 req_capsule_extend(&req->rq_pill, fmt[opc]);
1874 mdt = mdt_exp2dev(req->rq_export);
1875 CERROR("%s: Unsupported opcode '%ld' from client '%s':"
1876 " rc = %d\n", req->rq_export->exp_obd->obd_name,
1877 opc, mdt->mdt_ldlm_client->cli_name, -EFAULT);
1878 opc = err_serious(-EFAULT);
1881 opc = err_serious(-EFAULT);
1886 static int mdt_reint(struct tgt_session_info *tsi)
1890 static const struct req_format *reint_fmts[REINT_MAX] = {
1891 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1892 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1893 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1894 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1895 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1896 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1897 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
1898 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK,
1899 [REINT_MIGRATE] = &RQF_MDS_REINT_RENAME
1904 opc = mdt_reint_opcode(tgt_ses_req(tsi), reint_fmts);
1906 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1908 * No lock possible here from client to pass it to reint code
1911 rc = mdt_reint_internal(info, NULL, opc);
1912 mdt_thread_info_fini(info);
1917 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1921 /* this should sync the whole device */
1922 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1924 struct dt_device *dt = mdt->mdt_bottom;
1928 rc = dt->dd_ops->dt_sync(env, dt);
1932 /* this should sync this object */
1933 static int mdt_object_sync(struct mdt_thread_info *info)
1935 struct md_object *next;
1939 if (!mdt_object_exists(info->mti_object)) {
1940 CWARN("Non existing object "DFID"!\n",
1941 PFID(mdt_object_fid(info->mti_object)));
1944 next = mdt_object_child(info->mti_object);
1945 rc = mo_object_sync(info->mti_env, next);
1950 static int mdt_sync(struct tgt_session_info *tsi)
1952 struct ptlrpc_request *req = tgt_ses_req(tsi);
1953 struct req_capsule *pill = tsi->tsi_pill;
1954 struct mdt_body *body;
1959 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1960 RETURN(err_serious(-ENOMEM));
1962 if (fid_seq(&tsi->tsi_mdt_body->fid1) == 0) {
1963 rc = mdt_device_sync(tsi->tsi_env, mdt_exp2dev(tsi->tsi_exp));
1965 struct mdt_thread_info *info = tsi2mdt_info(tsi);
1967 /* sync an object */
1968 rc = mdt_object_sync(info);
1970 const struct lu_fid *fid;
1971 struct lu_attr *la = &info->mti_attr.ma_attr;
1973 info->mti_attr.ma_need = MA_INODE;
1974 info->mti_attr.ma_valid = 0;
1975 rc = mdt_attr_get_complex(info, info->mti_object,
1978 body = req_capsule_server_get(pill,
1980 fid = mdt_object_fid(info->mti_object);
1981 mdt_pack_attr2body(info, body, la, fid);
1984 mdt_thread_info_fini(info);
1987 mdt_counter_incr(req, LPROC_MDT_SYNC);
1993 * Handle quota control requests to consult current usage/limit, but also
1994 * to configure quota enforcement
1996 static int mdt_quotactl(struct tgt_session_info *tsi)
1998 struct obd_export *exp = tsi->tsi_exp;
1999 struct req_capsule *pill = tsi->tsi_pill;
2000 struct obd_quotactl *oqctl, *repoqc;
2002 struct mdt_device *mdt = mdt_exp2dev(exp);
2003 struct lu_device *qmt = mdt->mdt_qmt_dev;
2006 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
2008 RETURN(err_serious(-EPROTO));
2010 rc = req_capsule_server_pack(pill);
2012 RETURN(err_serious(rc));
2014 switch (oqctl->qc_cmd) {
2016 case LUSTRE_Q_INVALIDATE:
2017 case LUSTRE_Q_FINVALIDATE:
2021 /* deprecated, not used any more */
2022 RETURN(-EOPNOTSUPP);
2023 /* master quotactl */
2029 RETURN(-EOPNOTSUPP);
2030 /* slave quotactl */
2035 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2039 /* map uid/gid for remote client */
2041 if (exp_connect_rmtclient(exp)) {
2042 struct lustre_idmap_table *idmap;
2044 idmap = exp->exp_mdt_data.med_idmap;
2046 if (unlikely(oqctl->qc_cmd != Q_GETQUOTA &&
2047 oqctl->qc_cmd != Q_GETINFO))
2050 if (oqctl->qc_type == USRQUOTA)
2051 id = lustre_idmap_lookup_uid(NULL, idmap, 0,
2053 else if (oqctl->qc_type == GRPQUOTA)
2054 id = lustre_idmap_lookup_gid(NULL, idmap, 0,
2059 if (id == CFS_IDMAP_NOTFOUND) {
2060 CDEBUG(D_QUOTA, "no mapping for id %u\n", oqctl->qc_id);
2065 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
2067 RETURN(err_serious(-EFAULT));
2069 if (oqctl->qc_id != id)
2070 swap(oqctl->qc_id, id);
2072 switch (oqctl->qc_cmd) {
2078 /* forward quotactl request to QMT */
2079 rc = qmt_hdls.qmth_quotactl(tsi->tsi_env, qmt, oqctl);
2084 /* slave quotactl */
2085 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
2090 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2094 if (oqctl->qc_id != id)
2095 swap(oqctl->qc_id, id);
2101 /** clone llog ctxt from child (mdd)
2102 * This allows remote llog (replicator) access.
2103 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2104 * context was originally set up, or we can handle them directly.
2105 * I choose the latter, but that means I need any llog
2106 * contexts set up by child to be accessable by the mdt. So we clone the
2107 * context into our context list here.
2109 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2112 struct md_device *next = mdt->mdt_child;
2113 struct llog_ctxt *ctxt;
2116 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2119 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2120 if (rc || ctxt == NULL) {
2124 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2126 CERROR("Can't set mdt ctxt %d\n", rc);
2131 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2132 struct mdt_device *mdt, int idx)
2134 struct llog_ctxt *ctxt;
2136 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2139 /* Put once for the get we just did, and once for the clone */
2140 llog_ctxt_put(ctxt);
2141 llog_ctxt_put(ctxt);
2146 * sec context handlers
2148 static int mdt_sec_ctx_handle(struct tgt_session_info *tsi)
2152 rc = mdt_handle_idmap(tsi);
2154 struct ptlrpc_request *req = tgt_ses_req(tsi);
2157 opc = lustre_msg_get_opc(req->rq_reqmsg);
2158 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
2159 sptlrpc_svc_ctx_invalidate(req);
2162 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2168 * quota request handlers
2170 static int mdt_quota_dqacq(struct tgt_session_info *tsi)
2172 struct mdt_device *mdt = mdt_exp2dev(tsi->tsi_exp);
2173 struct lu_device *qmt = mdt->mdt_qmt_dev;
2178 RETURN(err_serious(-EOPNOTSUPP));
2180 rc = qmt_hdls.qmth_dqacq(tsi->tsi_env, qmt, tgt_ses_req(tsi));
2184 struct mdt_object *mdt_object_new(const struct lu_env *env,
2185 struct mdt_device *d,
2186 const struct lu_fid *f)
2188 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2189 struct lu_object *o;
2190 struct mdt_object *m;
2193 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2194 o = lu_object_find(env, &d->mdt_lu_dev, f, &conf);
2195 if (unlikely(IS_ERR(o)))
2196 m = (struct mdt_object *)o;
2202 struct mdt_object *mdt_object_find(const struct lu_env *env,
2203 struct mdt_device *d,
2204 const struct lu_fid *f)
2206 struct lu_object *o;
2207 struct mdt_object *m;
2210 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2211 o = lu_object_find(env, &d->mdt_lu_dev, f, NULL);
2212 if (unlikely(IS_ERR(o)))
2213 m = (struct mdt_object *)o;
2221 * Asyncronous commit for mdt device.
2223 * Pass asynchonous commit call down the MDS stack.
2225 * \param env environment
2226 * \param mdt the mdt device
2228 static void mdt_device_commit_async(const struct lu_env *env,
2229 struct mdt_device *mdt)
2231 struct dt_device *dt = mdt->mdt_bottom;
2234 rc = dt->dd_ops->dt_commit_async(env, dt);
2235 if (unlikely(rc != 0))
2236 CWARN("async commit start failed with rc = %d", rc);
2240 * Mark the lock as "synchonous".
2242 * Mark the lock to deffer transaction commit to the unlock time.
2244 * \param lock the lock to mark as "synchonous"
2246 * \see mdt_is_lock_sync
2247 * \see mdt_save_lock
2249 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2251 lock->l_ast_data = (void*)1;
2255 * Check whehter the lock "synchonous" or not.
2257 * \param lock the lock to check
2258 * \retval 1 the lock is "synchonous"
2259 * \retval 0 the lock isn't "synchronous"
2261 * \see mdt_set_lock_sync
2262 * \see mdt_save_lock
2264 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2266 return lock->l_ast_data != NULL;
2270 * Blocking AST for mdt locks.
2272 * Starts transaction commit if in case of COS lock conflict or
2273 * deffers such a commit to the mdt_save_lock.
2275 * \param lock the lock which blocks a request or cancelling lock
2276 * \param desc unused
2277 * \param data unused
2278 * \param flag indicates whether this cancelling or blocking callback
2280 * \see ldlm_blocking_ast_nocheck
2282 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2283 void *data, int flag)
2285 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2286 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2290 if (flag == LDLM_CB_CANCELING)
2292 lock_res_and_lock(lock);
2293 if (lock->l_blocking_ast != mdt_blocking_ast) {
2294 unlock_res_and_lock(lock);
2297 if (mdt_cos_is_enabled(mdt) &&
2298 lock->l_req_mode & (LCK_PW | LCK_EX) &&
2299 lock->l_blocking_lock != NULL &&
2300 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
2301 mdt_set_lock_sync(lock);
2303 rc = ldlm_blocking_ast_nocheck(lock);
2305 /* There is no lock conflict if l_blocking_lock == NULL,
2306 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2307 * when the last reference to a local lock was released */
2308 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2311 rc = lu_env_init(&env, LCT_LOCAL);
2312 if (unlikely(rc != 0))
2313 CWARN("lu_env initialization failed with rc = %d,"
2314 "cannot start asynchronous commit\n", rc);
2316 mdt_device_commit_async(&env, mdt);
2322 /* Used for cross-MDT lock */
2323 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2324 void *data, int flag)
2326 struct lustre_handle lockh;
2330 case LDLM_CB_BLOCKING:
2331 ldlm_lock2handle(lock, &lockh);
2332 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
2334 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2338 case LDLM_CB_CANCELING:
2339 LDLM_DEBUG(lock, "Revoke remote lock\n");
2347 int mdt_remote_object_lock(struct mdt_thread_info *mti,
2348 struct mdt_object *o, const struct lu_fid *fid,
2349 struct lustre_handle *lh, ldlm_mode_t mode,
2352 struct ldlm_enqueue_info *einfo = &mti->mti_einfo;
2353 ldlm_policy_data_t *policy = &mti->mti_policy;
2354 struct ldlm_res_id *res_id = &mti->mti_res_id;
2358 LASSERT(mdt_object_remote(o));
2360 LASSERT(ibits == MDS_INODELOCK_UPDATE);
2362 fid_build_reg_res_name(fid, res_id);
2364 memset(einfo, 0, sizeof(*einfo));
2365 einfo->ei_type = LDLM_IBITS;
2366 einfo->ei_mode = mode;
2367 einfo->ei_cb_bl = mdt_remote_blocking_ast;
2368 einfo->ei_cb_cp = ldlm_completion_ast;
2369 einfo->ei_enq_slave = 0;
2370 einfo->ei_res_id = res_id;
2372 memset(policy, 0, sizeof(*policy));
2373 policy->l_inodebits.bits = ibits;
2375 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
2380 static int mdt_object_local_lock(struct mdt_thread_info *info,
2381 struct mdt_object *o,
2382 struct mdt_lock_handle *lh, __u64 ibits,
2383 bool nonblock, int locality)
2385 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2386 ldlm_policy_data_t *policy = &info->mti_policy;
2387 struct ldlm_res_id *res_id = &info->mti_res_id;
2392 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2393 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2394 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2395 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2397 /* Only enqueue LOOKUP lock for remote object */
2398 if (mdt_object_remote(o))
2399 LASSERT(ibits == MDS_INODELOCK_LOOKUP);
2401 if (lh->mlh_type == MDT_PDO_LOCK) {
2402 /* check for exists after object is locked */
2403 if (mdt_object_exists(o) == 0) {
2404 /* Non-existent object shouldn't have PDO lock */
2407 /* Non-dir object shouldn't have PDO lock */
2408 if (!S_ISDIR(lu_object_attr(&o->mot_obj)))
2413 memset(policy, 0, sizeof(*policy));
2414 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2416 dlmflags = LDLM_FL_ATOMIC_CB;
2418 dlmflags |= LDLM_FL_BLOCK_NOWAIT;
2421 * Take PDO lock on whole directory and build correct @res_id for lock
2422 * on part of directory.
2424 if (lh->mlh_pdo_hash != 0) {
2425 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2426 mdt_lock_pdo_mode(info, o, lh);
2427 if (lh->mlh_pdo_mode != LCK_NL) {
2429 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2430 * is never going to be sent to client and we do not
2431 * want it slowed down due to possible cancels.
2433 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2434 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2435 policy, res_id, dlmflags,
2436 info->mti_exp == NULL ? NULL :
2437 &info->mti_exp->exp_handle.h_cookie);
2443 * Finish res_id initializing by name hash marking part of
2444 * directory which is taking modification.
2446 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2449 policy->l_inodebits.bits = ibits;
2452 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2453 * going to be sent to client. If it is - mdt_intent_policy() path will
2454 * fix it up and turn FL_LOCAL flag off.
2456 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2457 res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
2458 info->mti_exp == NULL ? NULL :
2459 &info->mti_exp->exp_handle.h_cookie);
2461 mdt_object_unlock(info, o, lh, 1);
2462 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2463 lh->mlh_pdo_hash != 0 &&
2464 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX)) {
2465 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2472 mdt_object_lock_internal(struct mdt_thread_info *info, struct mdt_object *o,
2473 struct mdt_lock_handle *lh, __u64 ibits,
2474 bool nonblock, int locality)
2479 if (!mdt_object_remote(o))
2480 return mdt_object_local_lock(info, o, lh, ibits, nonblock,
2483 if (locality == MDT_LOCAL_LOCK) {
2484 CERROR("%s: try to get local lock for remote object"
2485 DFID".\n", mdt_obd_name(info->mti_mdt),
2486 PFID(mdt_object_fid(o)));
2490 /* XXX do not support PERM/LAYOUT/XATTR lock for remote object yet */
2491 ibits &= ~(MDS_INODELOCK_PERM | MDS_INODELOCK_LAYOUT |
2492 MDS_INODELOCK_XATTR);
2493 if (ibits & MDS_INODELOCK_UPDATE) {
2494 /* Sigh, PDO needs to enqueue 2 locks right now, but
2495 * enqueue RPC can only request 1 lock, to avoid extra
2496 * RPC, so it will instead enqueue EX lock for remote
2497 * object anyway XXX*/
2498 if (lh->mlh_type == MDT_PDO_LOCK &&
2499 lh->mlh_pdo_hash != 0) {
2500 CDEBUG(D_INFO, "%s: "DFID" convert PDO lock to"
2501 "EX lock.\n", mdt_obd_name(info->mti_mdt),
2502 PFID(mdt_object_fid(o)));
2503 lh->mlh_pdo_hash = 0;
2504 lh->mlh_rreg_mode = LCK_EX;
2505 lh->mlh_type = MDT_REG_LOCK;
2507 rc = mdt_remote_object_lock(info, o, mdt_object_fid(o),
2510 MDS_INODELOCK_UPDATE);
2515 /* Only enqueue LOOKUP lock for remote object */
2516 if (ibits & MDS_INODELOCK_LOOKUP) {
2517 rc = mdt_object_local_lock(info, o, lh,
2518 MDS_INODELOCK_LOOKUP,
2519 nonblock, locality);
2527 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2528 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2530 return mdt_object_lock_internal(info, o, lh, ibits, false, locality);
2533 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
2534 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2536 struct mdt_lock_handle tmp = *lh;
2539 rc = mdt_object_lock_internal(info, o, &tmp, ibits, true, locality);
2547 * Save a lock within request object.
2549 * Keep the lock referenced until whether client ACK or transaction
2550 * commit happens or release the lock immediately depending on input
2551 * parameters. If COS is ON, a write lock is converted to COS lock
2554 * \param info thead info object
2555 * \param h lock handle
2556 * \param mode lock mode
2557 * \param decref force immediate lock releasing
2560 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2561 ldlm_mode_t mode, int decref)
2565 if (lustre_handle_is_used(h)) {
2566 if (decref || !info->mti_has_trans ||
2567 !(mode & (LCK_PW | LCK_EX))){
2568 mdt_fid_unlock(h, mode);
2570 struct mdt_device *mdt = info->mti_mdt;
2571 struct ldlm_lock *lock = ldlm_handle2lock(h);
2572 struct ptlrpc_request *req = mdt_info_req(info);
2575 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2577 /* there is no request if mdt_object_unlock() is called
2578 * from mdt_export_cleanup()->mdt_add_dirty_flag() */
2579 if (likely(req != NULL)) {
2580 CDEBUG(D_HA, "request = %p reply state = %p"
2581 " transno = "LPD64"\n", req,
2582 req->rq_reply_state, req->rq_transno);
2583 if (mdt_cos_is_enabled(mdt)) {
2585 ldlm_lock_downgrade(lock, LCK_COS);
2588 ptlrpc_save_lock(req, h, mode, no_ack);
2590 ldlm_lock_decref(h, mode);
2592 if (mdt_is_lock_sync(lock)) {
2593 CDEBUG(D_HA, "found sync-lock,"
2594 " async commit started\n");
2595 mdt_device_commit_async(info->mti_env,
2598 LDLM_LOCK_PUT(lock);
2607 * Unlock mdt object.
2609 * Immeditely release the regular lock and the PDO lock or save the
2610 * lock in reqeuest and keep them referenced until client ACK or
2611 * transaction commit.
2613 * \param info thread info object
2614 * \param o mdt object
2615 * \param lh mdt lock handle referencing regular and PDO locks
2616 * \param decref force immediate lock releasing
2618 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2619 struct mdt_lock_handle *lh, int decref)
2623 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2624 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2626 if (lustre_handle_is_used(&lh->mlh_rreg_lh))
2627 ldlm_lock_decref(&lh->mlh_rreg_lh, lh->mlh_rreg_mode);
2632 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2633 const struct lu_fid *f,
2634 struct mdt_lock_handle *lh,
2637 struct mdt_object *o;
2639 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2643 rc = mdt_object_lock(info, o, lh, ibits,
2646 mdt_object_put(info->mti_env, o);
2653 void mdt_object_unlock_put(struct mdt_thread_info * info,
2654 struct mdt_object * o,
2655 struct mdt_lock_handle *lh,
2658 mdt_object_unlock(info, o, lh, decref);
2659 mdt_object_put(info->mti_env, o);
2663 * Generic code handling requests that have struct mdt_body passed in:
2665 * - extract mdt_body from request and save it in @info, if present;
2667 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2670 * - if HABEO_CORPUS flag is set for this request type check whether object
2671 * actually exists on storage (lu_object_exists()).
2674 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2676 const struct mdt_body *body;
2677 struct mdt_object *obj;
2678 const struct lu_env *env;
2679 struct req_capsule *pill;
2683 env = info->mti_env;
2684 pill = info->mti_pill;
2686 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2690 if (!(body->valid & OBD_MD_FLID))
2693 if (!fid_is_sane(&body->fid1)) {
2694 CERROR("Invalid fid: "DFID"\n", PFID(&body->fid1));
2699 * Do not get size or any capa fields before we check that request
2700 * contains capa actually. There are some requests which do not, for
2701 * instance MDS_IS_SUBDIR.
2703 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2704 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2705 mdt_set_capainfo(info, 0, &body->fid1,
2706 req_capsule_client_get(pill, &RMF_CAPA1));
2708 obj = mdt_object_find(env, info->mti_mdt, &body->fid1);
2710 if ((flags & HABEO_CORPUS) &&
2711 !mdt_object_exists(obj)) {
2712 mdt_object_put(env, obj);
2713 /* for capability renew ENOENT will be handled in
2715 if (body->valid & OBD_MD_FLOSSCAPA)
2720 info->mti_object = obj;
2729 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2731 struct req_capsule *pill = info->mti_pill;
2735 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2736 rc = mdt_body_unpack(info, flags);
2740 if (rc == 0 && (flags & HABEO_REFERO)) {
2742 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2743 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2745 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2746 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
2749 rc = req_capsule_server_pack(pill);
2754 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2756 struct md_device *next = m->mdt_child;
2758 return next->md_ops->mdo_init_capa_ctxt(env, next,
2759 m->mdt_lut.lut_mds_capa,
2760 m->mdt_capa_timeout,
2765 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2767 lh->mlh_type = MDT_NUL_LOCK;
2768 lh->mlh_reg_lh.cookie = 0ull;
2769 lh->mlh_reg_mode = LCK_MINMODE;
2770 lh->mlh_pdo_lh.cookie = 0ull;
2771 lh->mlh_pdo_mode = LCK_MINMODE;
2772 lh->mlh_rreg_lh.cookie = 0ull;
2773 lh->mlh_rreg_mode = LCK_MINMODE;
2776 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2778 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2779 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2783 * Initialize fields of struct mdt_thread_info. Other fields are left in
2784 * uninitialized state, because it's too expensive to zero out whole
2785 * mdt_thread_info (> 1K) on each request arrival.
2787 void mdt_thread_info_init(struct ptlrpc_request *req,
2788 struct mdt_thread_info *info)
2792 info->mti_pill = &req->rq_pill;
2795 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2796 mdt_lock_handle_init(&info->mti_lh[i]);
2798 /* mdt device: it can be NULL while CONNECT */
2799 if (req->rq_export) {
2800 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2801 info->mti_exp = req->rq_export;
2803 info->mti_mdt = NULL;
2804 info->mti_env = req->rq_svc_thread->t_env;
2805 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2807 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2808 info->mti_big_buf = LU_BUF_NULL;
2809 info->mti_body = NULL;
2810 info->mti_object = NULL;
2811 info->mti_dlm_req = NULL;
2812 info->mti_has_trans = 0;
2813 info->mti_cross_ref = 0;
2814 info->mti_opdata = 0;
2815 info->mti_big_lmm_used = 0;
2817 info->mti_spec.no_create = 0;
2818 info->mti_spec.sp_rm_entry = 0;
2820 info->mti_spec.u.sp_ea.eadata = NULL;
2821 info->mti_spec.u.sp_ea.eadatalen = 0;
2824 void mdt_thread_info_fini(struct mdt_thread_info *info)
2828 if (info->mti_object != NULL) {
2829 mdt_object_put(info->mti_env, info->mti_object);
2830 info->mti_object = NULL;
2833 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2834 mdt_lock_handle_fini(&info->mti_lh[i]);
2835 info->mti_env = NULL;
2836 info->mti_pill = NULL;
2837 info->mti_exp = NULL;
2839 if (unlikely(info->mti_big_buf.lb_buf != NULL))
2840 lu_buf_free(&info->mti_big_buf);
2843 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi)
2845 struct mdt_thread_info *mti;
2846 struct lustre_capa *lc;
2848 mti = mdt_th_info(tsi->tsi_env);
2849 LASSERT(mti != NULL);
2851 mdt_thread_info_init(tgt_ses_req(tsi), mti);
2852 if (tsi->tsi_corpus != NULL) {
2853 struct req_capsule *pill = tsi->tsi_pill;
2855 mti->mti_object = mdt_obj(tsi->tsi_corpus);
2856 lu_object_get(tsi->tsi_corpus);
2859 * XXX: must be part of tgt_mdt_body_unpack but moved here
2860 * due to mdt_set_capainfo().
2862 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2863 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT) > 0) {
2864 lc = req_capsule_client_get(pill, &RMF_CAPA1);
2865 mdt_set_capainfo(mti, 0, &tsi->tsi_mdt_body->fid1, lc);
2868 mti->mti_body = tsi->tsi_mdt_body;
2869 mti->mti_dlm_req = tsi->tsi_dlm_req;
2874 static int mdt_tgt_connect(struct tgt_session_info *tsi)
2876 struct ptlrpc_request *req = tgt_ses_req(tsi);
2881 rc = tgt_connect(tsi);
2885 rc = mdt_init_idmap(tsi);
2890 obd_disconnect(class_export_get(req->rq_export));
2909 static int mdt_intent_getattr(enum mdt_it_code opcode,
2910 struct mdt_thread_info *info,
2911 struct ldlm_lock **,
2914 static int mdt_intent_getxattr(enum mdt_it_code opcode,
2915 struct mdt_thread_info *info,
2916 struct ldlm_lock **lockp,
2919 static int mdt_intent_layout(enum mdt_it_code opcode,
2920 struct mdt_thread_info *info,
2921 struct ldlm_lock **,
2923 static int mdt_intent_reint(enum mdt_it_code opcode,
2924 struct mdt_thread_info *info,
2925 struct ldlm_lock **,
2928 static struct mdt_it_flavor {
2929 const struct req_format *it_fmt;
2931 int (*it_act)(enum mdt_it_code ,
2932 struct mdt_thread_info *,
2933 struct ldlm_lock **,
2936 } mdt_it_flavor[] = {
2938 .it_fmt = &RQF_LDLM_INTENT,
2939 /*.it_flags = HABEO_REFERO,*/
2941 .it_act = mdt_intent_reint,
2942 .it_reint = REINT_OPEN
2945 .it_fmt = &RQF_LDLM_INTENT,
2947 * OCREAT is not a MUTABOR request as if the file
2949 * We do the extra check of OBD_CONNECT_RDONLY in
2950 * mdt_reint_open() when we really need to create
2954 .it_act = mdt_intent_reint,
2955 .it_reint = REINT_OPEN
2958 .it_fmt = &RQF_LDLM_INTENT,
2959 .it_flags = MUTABOR,
2960 .it_act = mdt_intent_reint,
2961 .it_reint = REINT_CREATE
2963 [MDT_IT_GETATTR] = {
2964 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2965 .it_flags = HABEO_REFERO,
2966 .it_act = mdt_intent_getattr
2968 [MDT_IT_READDIR] = {
2974 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2975 .it_flags = HABEO_REFERO,
2976 .it_act = mdt_intent_getattr
2979 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
2980 .it_flags = MUTABOR,
2982 .it_reint = REINT_UNLINK
2986 .it_flags = MUTABOR,
2989 [MDT_IT_GETXATTR] = {
2990 .it_fmt = &RQF_LDLM_INTENT_GETXATTR,
2991 .it_flags = HABEO_CORPUS,
2992 .it_act = mdt_intent_getxattr
2995 .it_fmt = &RQF_LDLM_INTENT_LAYOUT,
2997 .it_act = mdt_intent_layout
3002 mdt_intent_lock_replace(struct mdt_thread_info *info, struct ldlm_lock **lockp,
3003 struct ldlm_lock *new_lock, struct mdt_lock_handle *lh,
3006 struct ptlrpc_request *req = mdt_info_req(info);
3007 struct ldlm_lock *lock = *lockp;
3010 * Get new lock only for cases when possible resent did not find any
3013 if (new_lock == NULL)
3014 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3016 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3017 lh->mlh_reg_lh.cookie = 0;
3021 LASSERTF(new_lock != NULL,
3022 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
3025 * If we've already given this lock to a client once, then we should
3026 * have no readers or writers. Otherwise, we should have one reader
3027 * _or_ writer ref (which will be zeroed below) before returning the
3030 if (new_lock->l_export == req->rq_export) {
3031 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3033 LASSERT(new_lock->l_export == NULL);
3034 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3039 if (new_lock->l_export == req->rq_export) {
3041 * Already gave this to the client, which means that we
3042 * reconstructed a reply.
3044 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3046 lh->mlh_reg_lh.cookie = 0;
3047 RETURN(ELDLM_LOCK_REPLACED);
3051 * Fixup the lock to be given to the client.
3053 lock_res_and_lock(new_lock);
3054 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3055 * possible blocking AST. */
3056 while (new_lock->l_readers > 0) {
3057 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3058 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3059 new_lock->l_readers--;
3061 while (new_lock->l_writers > 0) {
3062 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3063 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3064 new_lock->l_writers--;
3067 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3068 new_lock->l_blocking_ast = lock->l_blocking_ast;
3069 new_lock->l_completion_ast = lock->l_completion_ast;
3070 new_lock->l_remote_handle = lock->l_remote_handle;
3071 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3073 unlock_res_and_lock(new_lock);
3075 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3076 &new_lock->l_remote_handle,
3077 &new_lock->l_exp_hash);
3079 LDLM_LOCK_RELEASE(new_lock);
3080 lh->mlh_reg_lh.cookie = 0;
3082 RETURN(ELDLM_LOCK_REPLACED);
3085 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3086 struct ldlm_lock *new_lock,
3087 struct ldlm_lock **old_lock,
3088 struct mdt_lock_handle *lh,
3089 enum mdt_it_code opcode)
3091 struct ptlrpc_request *req = mdt_info_req(info);
3092 struct obd_export *exp = req->rq_export;
3093 struct lustre_handle remote_hdl;
3094 struct ldlm_request *dlmreq;
3095 struct ldlm_lock *lock;
3097 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3100 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3101 remote_hdl = dlmreq->lock_handle[0];
3102 /* If the client does not require open lock, it does not need to
3103 * search lock in exp_lock_hash, since the server thread will
3104 * make sure the lock will be released, and the resend request
3105 * can always re-enqueue the lock */
3106 if ((opcode != MDT_IT_OPEN) || (opcode == MDT_IT_OPEN &&
3107 info->mti_spec.sp_cr_flags & MDS_OPEN_LOCK)) {
3108 /* In the function below, .hs_keycmp resolves to
3109 * ldlm_export_lock_keycmp() */
3110 /* coverity[overrun-buffer-val] */
3111 lock = cfs_hash_lookup(exp->exp_lock_hash, &remote_hdl);
3113 lock_res_and_lock(lock);
3114 if (lock != new_lock) {
3115 lh->mlh_reg_lh.cookie = lock->l_handle.h_cookie;
3116 lh->mlh_reg_mode = lock->l_granted_mode;
3118 LDLM_DEBUG(lock, "Restoring lock cookie");
3119 DEBUG_REQ(D_DLMTRACE, req,
3120 "restoring lock cookie "LPX64,
3121 lh->mlh_reg_lh.cookie);
3123 *old_lock = LDLM_LOCK_GET(lock);
3124 cfs_hash_put(exp->exp_lock_hash,
3126 unlock_res_and_lock(lock);
3129 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
3130 unlock_res_and_lock(lock);
3134 * If the xid matches, then we know this is a resent request, and allow
3135 * it. (It's probably an OPEN, for which we don't send a lock.
3137 if (req_xid_is_last(req))
3141 * This remote handle isn't enqueued, so we never received or processed
3142 * this request. Clear MSG_RESENT, because it can be handled like any
3143 * normal request now.
3145 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3147 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
3151 static int mdt_intent_getxattr(enum mdt_it_code opcode,
3152 struct mdt_thread_info *info,
3153 struct ldlm_lock **lockp,
3156 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3157 struct ldlm_reply *ldlm_rep = NULL;
3161 * Initialize lhc->mlh_reg_lh either from a previously granted lock
3162 * (for the resend case) or a new lock. Below we will use it to
3163 * replace the original lock.
3165 mdt_intent_fixup_resent(info, *lockp, NULL, lhc, opcode);
3166 if (!lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3167 mdt_lock_reg_init(lhc, (*lockp)->l_req_mode);
3168 rc = mdt_object_lock(info, info->mti_object, lhc,
3169 MDS_INODELOCK_XATTR,
3175 grc = mdt_getxattr(info);
3177 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3179 if (mdt_info_req(info)->rq_repmsg != NULL)
3180 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3181 if (ldlm_rep == NULL)
3182 RETURN(err_serious(-EFAULT));
3184 ldlm_rep->lock_policy_res2 = grc;
3189 static int mdt_intent_getattr(enum mdt_it_code opcode,
3190 struct mdt_thread_info *info,
3191 struct ldlm_lock **lockp,
3194 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3195 struct ldlm_lock *new_lock = NULL;
3197 struct ldlm_reply *ldlm_rep;
3198 struct mdt_body *reqbody;
3199 struct mdt_body *repbody;
3203 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3206 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3209 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
3210 repbody->eadatasize = 0;
3211 repbody->aclsize = 0;
3215 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
3217 case MDT_IT_GETATTR:
3218 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
3222 CERROR("Unsupported intent (%d)\n", opcode);
3223 GOTO(out_shrink, rc = -EINVAL);
3226 rc = mdt_init_ucred(info, reqbody);
3228 GOTO(out_shrink, rc);
3230 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3231 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3233 /* Get lock from request for possible resent case. */
3234 mdt_intent_fixup_resent(info, *lockp, &new_lock, lhc, opcode);
3236 rc = mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3237 ldlm_rep->lock_policy_res2 = clear_serious(rc);
3239 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3240 ldlm_rep->lock_policy_res2 = 0;
3241 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3242 ldlm_rep->lock_policy_res2) {
3243 lhc->mlh_reg_lh.cookie = 0ull;
3244 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3247 rc = mdt_intent_lock_replace(info, lockp, new_lock, lhc, flags);
3250 mdt_exit_ucred(info);
3252 mdt_client_compatibility(info);
3253 rc2 = mdt_fix_reply(info);
3259 static int mdt_intent_layout(enum mdt_it_code opcode,
3260 struct mdt_thread_info *info,
3261 struct ldlm_lock **lockp,
3264 struct layout_intent *layout;
3266 struct mdt_object *obj = NULL;
3270 if (opcode != MDT_IT_LAYOUT) {
3271 CERROR("%s: Unknown intent (%d)\n", mdt_obd_name(info->mti_mdt),
3276 fid = &info->mti_tmp_fid2;
3277 fid_extract_from_res_name(fid, &(*lockp)->l_resource->lr_name);
3279 obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
3281 RETURN(PTR_ERR(obj));
3283 if (mdt_object_exists(obj) && !mdt_object_remote(obj)) {
3284 /* get the length of lsm */
3285 rc = mdt_attr_get_eabuf_size(info, obj);
3289 if (rc > info->mti_mdt->mdt_max_mdsize)
3290 info->mti_mdt->mdt_max_mdsize = rc;
3293 mdt_object_put(info->mti_env, obj);
3295 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
3296 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER, rc);
3297 rc = req_capsule_server_pack(info->mti_pill);
3301 layout = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
3302 LASSERT(layout != NULL);
3303 if (layout->li_opc == LAYOUT_INTENT_ACCESS)
3304 /* return to normal ldlm handling */
3307 CERROR("%s: Unsupported layout intent (%d)\n",
3308 mdt_obd_name(info->mti_mdt), layout->li_opc);
3312 static int mdt_intent_reint(enum mdt_it_code opcode,
3313 struct mdt_thread_info *info,
3314 struct ldlm_lock **lockp,
3317 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3318 struct ldlm_reply *rep = NULL;
3322 static const struct req_format *intent_fmts[REINT_MAX] = {
3323 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3324 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3329 opc = mdt_reint_opcode(mdt_info_req(info), intent_fmts);
3333 if (mdt_it_flavor[opcode].it_reint != opc) {
3334 CERROR("Reint code %ld doesn't match intent: %d\n",
3336 RETURN(err_serious(-EPROTO));
3339 /* Get lock from request for possible resent case. */
3340 mdt_intent_fixup_resent(info, *lockp, NULL, lhc, opcode);
3342 rc = mdt_reint_internal(info, lhc, opc);
3344 /* Check whether the reply has been packed successfully. */
3345 if (mdt_info_req(info)->rq_repmsg != NULL)
3346 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3348 RETURN(err_serious(-EFAULT));
3350 /* MDC expects this in any case */
3352 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3354 /* the open lock or the lock for cross-ref object should be
3355 * returned to the client */
3356 if (rc == -EREMOTE || mdt_get_disposition(rep, DISP_OPEN_LOCK)) {
3357 LASSERT(lustre_handle_is_used(&lhc->mlh_reg_lh));
3358 rep->lock_policy_res2 = 0;
3359 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3363 rep->lock_policy_res2 = clear_serious(rc);
3365 if (rep->lock_policy_res2 == -ENOENT &&
3366 mdt_get_disposition(rep, DISP_LOOKUP_NEG))
3367 rep->lock_policy_res2 = 0;
3369 if (rc == -ENOTCONN || rc == -ENODEV ||
3370 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3372 * If it is the disconnect error (ENODEV & ENOCONN), the error
3373 * will be returned by rq_status, and client at ptlrpc layer
3374 * will detect this, then disconnect, reconnect the import
3375 * immediately, instead of impacting the following the rpc.
3377 lhc->mlh_reg_lh.cookie = 0ull;
3381 * For other cases, the error will be returned by intent.
3382 * and client will retrieve the result from intent.
3385 * FIXME: when open lock is finished, that should be
3388 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3389 LASSERTF(rc == 0, "Error occurred but lock handle "
3390 "is still in use, rc = %d\n", rc);
3391 rep->lock_policy_res2 = 0;
3392 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3395 lhc->mlh_reg_lh.cookie = 0ull;
3396 RETURN(ELDLM_LOCK_ABORTED);
3401 static int mdt_intent_code(long itcode)
3409 case IT_OPEN|IT_CREAT:
3416 rc = MDT_IT_READDIR;
3419 rc = MDT_IT_GETATTR;
3431 rc = MDT_IT_GETXATTR;
3436 case IT_QUOTA_DQACQ:
3441 CERROR("Unknown intent opcode: %ld\n", itcode);
3448 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
3449 struct ldlm_lock **lockp, __u64 flags)
3451 struct req_capsule *pill;
3452 struct mdt_it_flavor *flv;
3457 opc = mdt_intent_code(itopc);
3461 pill = info->mti_pill;
3463 if (opc == MDT_IT_QUOTA) {
3464 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
3467 RETURN(-EOPNOTSUPP);
3469 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
3470 /* pass the request to quota master */
3471 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
3472 mdt_info_req(info), lockp,
3477 flv = &mdt_it_flavor[opc];
3478 if (flv->it_fmt != NULL)
3479 req_capsule_extend(pill, flv->it_fmt);
3481 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
3483 struct ptlrpc_request *req = mdt_info_req(info);
3484 if (flv->it_flags & MUTABOR &&
3485 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
3488 if (rc == 0 && flv->it_act != NULL) {
3489 struct ldlm_reply *rep;
3491 /* execute policy */
3492 rc = flv->it_act(opc, info, lockp, flags);
3494 /* Check whether the reply has been packed successfully. */
3495 if (mdt_info_req(info)->rq_repmsg != NULL) {
3496 rep = req_capsule_server_get(info->mti_pill,
3498 rep->lock_policy_res2 =
3499 ptlrpc_status_hton(rep->lock_policy_res2);
3507 static int mdt_intent_policy(struct ldlm_namespace *ns,
3508 struct ldlm_lock **lockp, void *req_cookie,
3509 ldlm_mode_t mode, __u64 flags, void *data)
3511 struct tgt_session_info *tsi;
3512 struct mdt_thread_info *info;
3513 struct ptlrpc_request *req = req_cookie;
3514 struct ldlm_intent *it;
3515 struct req_capsule *pill;
3520 LASSERT(req != NULL);
3522 tsi = tgt_ses_info(req->rq_svc_thread->t_env);
3524 info = tsi2mdt_info(tsi);
3525 LASSERT(info != NULL);
3526 pill = info->mti_pill;
3527 LASSERT(pill->rc_req == req);
3529 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
3530 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
3531 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
3533 rc = mdt_intent_opc(it->opc, info, lockp, flags);
3537 /* Lock without inodebits makes no sense and will oops
3538 * later in ldlm. Let's check it now to see if we have
3539 * ibits corrupted somewhere in mdt_intent_opc().
3540 * The case for client miss to set ibits has been
3541 * processed by others. */
3542 LASSERT(ergo(info->mti_dlm_req->lock_desc.l_resource.\
3543 lr_type == LDLM_IBITS,
3544 info->mti_dlm_req->lock_desc.\
3545 l_policy_data.l_inodebits.bits != 0));
3547 rc = err_serious(-EFAULT);
3549 /* No intent was provided */
3550 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
3551 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
3552 rc = req_capsule_server_pack(pill);
3554 rc = err_serious(rc);
3556 mdt_thread_info_fini(info);
3560 static void mdt_deregister_seq_exp(struct mdt_device *mdt)
3562 struct seq_server_site *ss = mdt_seq_site(mdt);
3564 if (ss->ss_node_id == 0)
3567 if (ss->ss_client_seq != NULL) {
3568 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
3569 ss->ss_client_seq->lcs_exp = NULL;
3572 if (ss->ss_server_fld != NULL) {
3573 lustre_deregister_lwp_item(&ss->ss_server_fld->lsf_control_exp);
3574 ss->ss_server_fld->lsf_control_exp = NULL;
3578 static void mdt_seq_fini_cli(struct mdt_device *mdt)
3580 struct seq_server_site *ss = mdt_seq_site(mdt);
3585 if (ss->ss_server_seq != NULL)
3586 seq_server_set_cli(NULL, ss->ss_server_seq, NULL);
3589 static int mdt_seq_fini(const struct lu_env *env, struct mdt_device *mdt)
3591 mdt_seq_fini_cli(mdt);
3592 mdt_deregister_seq_exp(mdt);
3594 return seq_site_fini(env, mdt_seq_site(mdt));
3598 * It will retrieve its FLDB entries from MDT0, and it only happens
3599 * when upgrading existent FS to 2.6 or when local FLDB is corrupted,
3600 * and it needs to refresh FLDB from the MDT0.
3602 static int mdt_register_lwp_callback(void *data)
3605 struct mdt_device *mdt = data;
3606 struct lu_server_fld *fld = mdt_seq_site(mdt)->ss_server_fld;
3610 LASSERT(mdt_seq_site(mdt)->ss_node_id != 0);
3612 if (!likely(fld->lsf_new))
3615 rc = lu_env_init(&env, LCT_MD_THREAD);
3617 CERROR("%s: cannot init env: rc = %d\n", mdt_obd_name(mdt), rc);
3621 rc = fld_update_from_controller(&env, fld);
3623 CERROR("%s: cannot update controller: rc = %d\n",
3624 mdt_obd_name(mdt), rc);
3632 static int mdt_register_seq_exp(struct mdt_device *mdt)
3634 struct seq_server_site *ss = mdt_seq_site(mdt);
3635 char *lwp_name = NULL;
3638 if (ss->ss_node_id == 0)
3641 OBD_ALLOC(lwp_name, MAX_OBD_NAME);
3642 if (lwp_name == NULL)
3643 GOTO(out_free, rc = -ENOMEM);
3645 rc = tgt_name2lwp_name(mdt_obd_name(mdt), lwp_name, MAX_OBD_NAME, 0);
3649 rc = lustre_register_lwp_item(lwp_name, &ss->ss_client_seq->lcs_exp,
3654 rc = lustre_register_lwp_item(lwp_name,
3655 &ss->ss_server_fld->lsf_control_exp,
3656 mdt_register_lwp_callback, mdt);
3658 lustre_deregister_lwp_item(&ss->ss_client_seq->lcs_exp);
3659 ss->ss_client_seq->lcs_exp = NULL;
3663 if (lwp_name != NULL)
3664 OBD_FREE(lwp_name, MAX_OBD_NAME);
3670 * Init client sequence manager which is used by local MDS to talk to sequence
3671 * controller on remote node.
3673 static int mdt_seq_init_cli(const struct lu_env *env, struct mdt_device *mdt)
3675 struct seq_server_site *ss = mdt_seq_site(mdt);
3680 /* check if this is adding the first MDC and controller is not yet
3682 OBD_ALLOC_PTR(ss->ss_client_seq);
3683 if (ss->ss_client_seq == NULL)
3686 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3687 if (prefix == NULL) {
3688 OBD_FREE_PTR(ss->ss_client_seq);
3689 ss->ss_client_seq = NULL;
3693 /* Note: seq_client_fini will be called in seq_site_fini */
3694 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s", mdt_obd_name(mdt));
3695 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_METADATA,
3696 prefix, ss->ss_node_id == 0 ? ss->ss_control_seq :
3698 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3700 OBD_FREE_PTR(ss->ss_client_seq);
3701 ss->ss_client_seq = NULL;
3705 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
3710 static int mdt_seq_init(const struct lu_env *env, struct mdt_device *mdt)
3712 struct seq_server_site *ss;
3716 ss = mdt_seq_site(mdt);
3717 /* init sequence controller server(MDT0) */
3718 if (ss->ss_node_id == 0) {
3719 OBD_ALLOC_PTR(ss->ss_control_seq);
3720 if (ss->ss_control_seq == NULL)
3723 rc = seq_server_init(env, ss->ss_control_seq, mdt->mdt_bottom,
3724 mdt_obd_name(mdt), LUSTRE_SEQ_CONTROLLER,
3727 GOTO(out_seq_fini, rc);
3730 /* Init normal sequence server */
3731 OBD_ALLOC_PTR(ss->ss_server_seq);
3732 if (ss->ss_server_seq == NULL)
3733 GOTO(out_seq_fini, rc = -ENOMEM);
3735 rc = seq_server_init(env, ss->ss_server_seq, mdt->mdt_bottom,
3736 mdt_obd_name(mdt), LUSTRE_SEQ_SERVER, ss);
3738 GOTO(out_seq_fini, rc);
3740 /* init seq client for seq server to talk to seq controller(MDT0) */
3741 rc = mdt_seq_init_cli(env, mdt);
3743 GOTO(out_seq_fini, rc);
3745 if (ss->ss_node_id != 0)
3746 /* register controler export through lwp */
3747 rc = mdt_register_seq_exp(mdt);
3752 mdt_seq_fini(env, mdt);
3760 static int mdt_fld_fini(const struct lu_env *env,
3761 struct mdt_device *m)
3763 struct seq_server_site *ss = mdt_seq_site(m);
3766 if (ss && ss->ss_server_fld) {
3767 fld_server_fini(env, ss->ss_server_fld);
3768 OBD_FREE_PTR(ss->ss_server_fld);
3769 ss->ss_server_fld = NULL;
3775 static int mdt_fld_init(const struct lu_env *env,
3777 struct mdt_device *m)
3779 struct seq_server_site *ss;
3783 ss = mdt_seq_site(m);
3785 OBD_ALLOC_PTR(ss->ss_server_fld);
3786 if (ss->ss_server_fld == NULL)
3787 RETURN(rc = -ENOMEM);
3789 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
3792 OBD_FREE_PTR(ss->ss_server_fld);
3793 ss->ss_server_fld = NULL;
3800 static void mdt_stack_pre_fini(const struct lu_env *env,
3801 struct mdt_device *m, struct lu_device *top)
3803 struct lustre_cfg_bufs *bufs;
3804 struct lustre_cfg *lcfg;
3805 struct mdt_thread_info *info;
3810 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3811 LASSERT(info != NULL);
3813 bufs = &info->mti_u.bufs;
3815 LASSERT(m->mdt_child_exp);
3816 LASSERT(m->mdt_child_exp->exp_obd);
3818 /* process cleanup, pass mdt obd name to get obd umount flags */
3819 /* XXX: this is needed because all layers are referenced by
3820 * objects (some of them are pinned by osd, for example *
3821 * the proper solution should be a model where object used
3822 * by osd only doesn't have mdt/mdd slices -bzzz */
3823 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
3824 lustre_cfg_bufs_set_string(bufs, 1, NULL);
3825 lcfg = lustre_cfg_new(LCFG_PRE_CLEANUP, bufs);
3827 CERROR("%s:Cannot alloc lcfg!\n", mdt_obd_name(m));
3830 top->ld_ops->ldo_process_config(env, top, lcfg);
3831 lustre_cfg_free(lcfg);
3835 static void mdt_stack_fini(const struct lu_env *env,
3836 struct mdt_device *m, struct lu_device *top)
3838 struct obd_device *obd = mdt2obd_dev(m);
3839 struct lustre_cfg_bufs *bufs;
3840 struct lustre_cfg *lcfg;
3841 struct mdt_thread_info *info;
3845 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3846 LASSERT(info != NULL);
3848 lu_dev_del_linkage(top->ld_site, top);
3850 lu_site_purge(env, top->ld_site, -1);
3852 bufs = &info->mti_u.bufs;
3853 /* process cleanup, pass mdt obd name to get obd umount flags */
3854 /* another purpose is to let all layers to release their objects */
3855 lustre_cfg_bufs_reset(bufs, mdt_obd_name(m));
3860 lustre_cfg_bufs_set_string(bufs, 1, flags);
3861 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
3863 CERROR("Cannot alloc lcfg!\n");
3867 top->ld_ops->ldo_process_config(env, top, lcfg);
3868 lustre_cfg_free(lcfg);
3870 lu_site_purge(env, top->ld_site, -1);
3872 m->mdt_child = NULL;
3873 m->mdt_bottom = NULL;
3875 obd_disconnect(m->mdt_child_exp);
3876 m->mdt_child_exp = NULL;
3878 obd_disconnect(m->mdt_bottom_exp);
3879 m->mdt_child_exp = NULL;
3882 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
3883 const char *next, struct obd_export **exp)
3885 struct obd_connect_data *data = NULL;
3886 struct obd_device *obd;
3890 OBD_ALLOC_PTR(data);
3892 GOTO(out, rc = -ENOMEM);
3894 obd = class_name2obd(next);
3896 CERROR("%s: can't locate next device: %s\n",
3897 mdt_obd_name(m), next);
3898 GOTO(out, rc = -ENOTCONN);
3901 data->ocd_connect_flags = OBD_CONNECT_VERSION;
3902 data->ocd_version = LUSTRE_VERSION_CODE;
3904 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
3906 CERROR("%s: cannot connect to next dev %s (%d)\n",
3907 mdt_obd_name(m), next, rc);
3917 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
3918 struct lustre_cfg *cfg)
3920 char *dev = lustre_cfg_string(cfg, 0);
3921 int rc, name_size, uuid_size;
3922 char *name, *uuid, *p;
3923 struct lustre_cfg_bufs *bufs;
3924 struct lustre_cfg *lcfg;
3925 struct obd_device *obd;
3926 struct lustre_profile *lprof;
3927 struct lu_site *site;
3930 /* in 1.8 we had the only device in the stack - MDS.
3931 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
3932 * in 2.3 OSD is instantiated by obd_mount.c, so we need
3933 * to generate names and setup MDT, MDD. MDT will be using
3934 * generated name to connect to MDD. for MDD the next device
3935 * will be LOD with name taken from so called "profile" which
3936 * is generated by mount_option line
3938 * 1.8 MGS generates config. commands like this:
3939 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
3940 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
3941 * 2.0 MGS generates config. commands like this:
3942 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
3943 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
3944 * 3:lustre-MDT0000-mdtlov 4:f
3946 * we generate MDD name from MDT one, just replacing T with D
3948 * after all the preparations, the logical equivalent will be
3949 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
3950 * 3:lustre-MDT0000-mdtlov 4:f
3951 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
3952 * 3:lustre-MDD0000 4:f
3954 * notice we build the stack from down to top: MDD first, then MDT */
3956 name_size = MAX_OBD_NAME;
3957 uuid_size = MAX_OBD_NAME;
3959 OBD_ALLOC(name, name_size);
3960 OBD_ALLOC(uuid, uuid_size);
3961 if (name == NULL || uuid == NULL)
3962 GOTO(cleanup_mem, rc = -ENOMEM);
3964 OBD_ALLOC_PTR(bufs);
3966 GOTO(cleanup_mem, rc = -ENOMEM);
3969 p = strstr(name, "-MDT");
3971 GOTO(free_bufs, rc = -ENOMEM);
3974 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
3976 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
3977 if (lprof == NULL || lprof->lp_dt == NULL) {
3978 CERROR("can't find the profile: %s\n",
3979 lustre_cfg_string(cfg, 0));
3980 GOTO(free_bufs, rc = -EINVAL);
3983 lustre_cfg_bufs_reset(bufs, name);
3984 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
3985 lustre_cfg_bufs_set_string(bufs, 2, uuid);
3986 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
3988 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
3990 GOTO(free_bufs, rc = -ENOMEM);
3992 rc = class_attach(lcfg);
3994 GOTO(lcfg_cleanup, rc);
3996 obd = class_name2obd(name);
3998 CERROR("Can not find obd %s (%s in config)\n",
3999 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
4000 GOTO(class_detach, rc = -EINVAL);
4003 lustre_cfg_free(lcfg);
4005 lustre_cfg_bufs_reset(bufs, name);
4006 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4007 lustre_cfg_bufs_set_string(bufs, 2, dev);
4008 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4010 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4012 rc = class_setup(obd, lcfg);
4014 GOTO(class_detach, rc);
4016 /* connect to MDD we just setup */
4017 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
4019 GOTO(class_detach, rc);
4021 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
4023 LASSERT(mdt_lu_site(mdt) == NULL);
4024 mdt->mdt_lu_dev.ld_site = site;
4025 site->ls_top_dev = &mdt->mdt_lu_dev;
4026 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
4028 /* now connect to bottom OSD */
4029 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
4030 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
4032 GOTO(class_detach, rc);
4034 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
4036 rc = lu_env_refill((struct lu_env *)env);
4038 CERROR("Failure to refill session: '%d'\n", rc);
4040 lu_dev_add_linkage(site, &mdt->mdt_lu_dev);
4045 class_detach(obd, lcfg);
4047 lustre_cfg_free(lcfg);
4052 OBD_FREE(name, name_size);
4054 OBD_FREE(uuid, uuid_size);
4058 /* setup quota master target on MDT0 */
4059 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
4060 struct lustre_cfg *cfg)
4062 struct obd_device *obd;
4063 char *dev = lustre_cfg_string(cfg, 0);
4064 char *qmtname, *uuid, *p;
4065 struct lustre_cfg_bufs *bufs;
4066 struct lustre_cfg *lcfg;
4067 struct lustre_profile *lprof;
4068 struct obd_connect_data *data;
4072 LASSERT(mdt->mdt_qmt_exp == NULL);
4073 LASSERT(mdt->mdt_qmt_dev == NULL);
4075 /* quota master is on MDT0 only for now */
4076 if (mdt->mdt_seq_site.ss_node_id != 0)
4079 /* MGS generates config commands which look as follows:
4080 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4081 * 3:lustre-MDT0000-mdtlov 4:f
4083 * We generate the QMT name from the MDT one, just replacing MD with QM
4084 * after all the preparations, the logical equivalent will be:
4085 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
4086 * 3:lustre-MDT0000-osd 4:f */
4087 OBD_ALLOC(qmtname, MAX_OBD_NAME);
4088 OBD_ALLOC(uuid, UUID_MAX);
4089 OBD_ALLOC_PTR(bufs);
4090 OBD_ALLOC_PTR(data);
4091 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
4092 GOTO(cleanup_mem, rc = -ENOMEM);
4094 strcpy(qmtname, dev);
4095 p = strstr(qmtname, "-MDT");
4097 GOTO(cleanup_mem, rc = -ENOMEM);
4098 /* replace MD with QM */
4102 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
4104 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4105 if (lprof == NULL || lprof->lp_dt == NULL) {
4106 CERROR("can't find profile for %s\n",
4107 lustre_cfg_string(cfg, 0));
4108 GOTO(cleanup_mem, rc = -EINVAL);
4111 lustre_cfg_bufs_reset(bufs, qmtname);
4112 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
4113 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4114 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4116 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
4118 GOTO(cleanup_mem, rc = -ENOMEM);
4120 rc = class_attach(lcfg);
4122 GOTO(lcfg_cleanup, rc);
4124 obd = class_name2obd(qmtname);
4126 CERROR("Can not find obd %s (%s in config)\n", qmtname,
4127 lustre_cfg_string(cfg, 0));
4128 GOTO(class_detach, rc = -EINVAL);
4131 lustre_cfg_free(lcfg);
4133 lustre_cfg_bufs_reset(bufs, qmtname);
4134 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4135 lustre_cfg_bufs_set_string(bufs, 2, dev);
4137 /* for quota, the next device should be the OSD device */
4138 lustre_cfg_bufs_set_string(bufs, 3,
4139 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
4141 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4143 rc = class_setup(obd, lcfg);
4145 GOTO(class_detach, rc);
4147 mdt->mdt_qmt_dev = obd->obd_lu_dev;
4149 /* configure local quota objects */
4150 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
4154 GOTO(class_cleanup, rc);
4156 /* connect to quota master target */
4157 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4158 data->ocd_version = LUSTRE_VERSION_CODE;
4159 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
4162 CERROR("cannot connect to quota master device %s (%d)\n",
4164 GOTO(class_cleanup, rc);
4170 class_manual_cleanup(obd);
4171 mdt->mdt_qmt_dev = NULL;
4175 class_detach(obd, lcfg);
4177 lustre_cfg_free(lcfg);
4182 OBD_FREE(qmtname, MAX_OBD_NAME);
4184 OBD_FREE(uuid, UUID_MAX);
4190 /* Shutdown quota master target associated with mdt */
4191 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
4195 if (mdt->mdt_qmt_exp == NULL)
4197 LASSERT(mdt->mdt_qmt_dev != NULL);
4199 /* the qmt automatically shuts down when the mdt disconnects */
4200 obd_disconnect(mdt->mdt_qmt_exp);
4201 mdt->mdt_qmt_exp = NULL;
4202 mdt->mdt_qmt_dev = NULL;
4206 /* mdt_getxattr() is used from mdt_intent_getxattr(), use this wrapper
4207 * for now. This will be removed along with converting rest of MDT code
4208 * to use tgt_session_info */
4209 int mdt_tgt_getxattr(struct tgt_session_info *tsi)
4211 struct mdt_thread_info *info = tsi2mdt_info(tsi);
4214 rc = mdt_getxattr(info);
4216 mdt_thread_info_fini(info);
4220 static struct tgt_handler mdt_tgt_handlers[] = {
4221 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4222 0, MDS_CONNECT, mdt_tgt_connect,
4223 &RQF_CONNECT, LUSTRE_OBD_VERSION),
4224 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4225 0, MDS_DISCONNECT, tgt_disconnect,
4226 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
4227 TGT_RPC_HANDLER(MDS_FIRST_OPC,
4228 HABEO_REFERO, MDS_SET_INFO, mdt_set_info,
4229 &RQF_OBD_SET_INFO, LUSTRE_MDS_VERSION),
4230 TGT_MDT_HDL(0, MDS_GET_INFO, mdt_get_info),
4231 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_GETSTATUS, mdt_getstatus),
4232 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETATTR, mdt_getattr),
4233 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_GETATTR_NAME,
4235 TGT_MDT_HDL(HABEO_CORPUS, MDS_GETXATTR, mdt_tgt_getxattr),
4236 TGT_MDT_HDL(0 | HABEO_REFERO, MDS_STATFS, mdt_statfs),
4237 TGT_MDT_HDL(0 | MUTABOR, MDS_REINT, mdt_reint),
4238 TGT_MDT_HDL(HABEO_CORPUS, MDS_CLOSE, mdt_close),
4239 TGT_MDT_HDL(HABEO_CORPUS, MDS_DONE_WRITING,
4241 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_READPAGE, mdt_readpage),
4242 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_SYNC, mdt_sync),
4243 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_IS_SUBDIR, mdt_is_subdir),
4244 TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
4245 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_PROGRESS,
4247 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_REGISTER,
4248 mdt_hsm_ct_register),
4249 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_CT_UNREGISTER,
4250 mdt_hsm_ct_unregister),
4251 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_STATE_GET,
4253 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR, MDS_HSM_STATE_SET,
4255 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_ACTION, mdt_hsm_action),
4256 TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_REQUEST,
4258 TGT_MDT_HDL(HABEO_CLAVIS | HABEO_CORPUS | HABEO_REFERO | MUTABOR,
4263 static struct tgt_handler mdt_sec_ctx_ops[] = {
4264 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, mdt_sec_ctx_handle),
4265 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
4266 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, mdt_sec_ctx_handle)
4269 static struct tgt_handler mdt_quota_ops[] = {
4270 TGT_QUOTA_HDL(HABEO_REFERO, QUOTA_DQACQ, mdt_quota_dqacq),
4273 static struct tgt_opc_slice mdt_common_slice[] = {
4275 .tos_opc_start = MDS_FIRST_OPC,
4276 .tos_opc_end = MDS_LAST_OPC,
4277 .tos_hs = mdt_tgt_handlers
4280 .tos_opc_start = OBD_FIRST_OPC,
4281 .tos_opc_end = OBD_LAST_OPC,
4282 .tos_hs = tgt_obd_handlers
4285 .tos_opc_start = LDLM_FIRST_OPC,
4286 .tos_opc_end = LDLM_LAST_OPC,
4287 .tos_hs = tgt_dlm_handlers
4290 .tos_opc_start = SEC_FIRST_OPC,
4291 .tos_opc_end = SEC_LAST_OPC,
4292 .tos_hs = mdt_sec_ctx_ops
4295 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
4296 .tos_opc_end = OUT_UPDATE_LAST_OPC,
4297 .tos_hs = tgt_out_handlers
4300 .tos_opc_start = FLD_FIRST_OPC,
4301 .tos_opc_end = FLD_LAST_OPC,
4302 .tos_hs = fld_handlers
4305 .tos_opc_start = SEQ_FIRST_OPC,
4306 .tos_opc_end = SEQ_LAST_OPC,
4307 .tos_hs = seq_handlers
4310 .tos_opc_start = QUOTA_DQACQ,
4311 .tos_opc_end = QUOTA_LAST_OPC,
4312 .tos_hs = mdt_quota_ops
4315 .tos_opc_start = LLOG_FIRST_OPC,
4316 .tos_opc_end = LLOG_LAST_OPC,
4317 .tos_hs = tgt_llog_handlers
4320 .tos_opc_start = LFSCK_FIRST_OPC,
4321 .tos_opc_end = LFSCK_LAST_OPC,
4322 .tos_hs = tgt_lfsck_handlers
4330 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4332 struct md_device *next = m->mdt_child;
4333 struct lu_device *d = &m->mdt_lu_dev;
4334 struct obd_device *obd = mdt2obd_dev(m);
4335 struct lfsck_stop stop;
4338 stop.ls_status = LS_PAUSED;
4340 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_STOP_LFSCK, 0, &stop);
4342 target_recovery_fini(obd);
4343 ping_evictor_stop();
4344 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
4346 if (m->mdt_opts.mo_coordinator)
4347 mdt_hsm_cdt_stop(m);
4349 mdt_hsm_cdt_fini(m);
4351 mdt_llog_ctxt_unclone(env, m, LLOG_AGENT_ORIG_CTXT);
4352 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4353 obd_exports_barrier(obd);
4354 obd_zombie_barrier();
4358 tgt_fini(env, &m->mdt_lut);
4359 mdt_fs_cleanup(env, m);
4360 upcall_cache_cleanup(m->mdt_identity_cache);
4361 m->mdt_identity_cache = NULL;
4363 if (m->mdt_namespace != NULL) {
4364 ldlm_namespace_free(m->mdt_namespace, NULL,
4365 d->ld_obd->obd_force);
4366 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
4369 mdt_quota_fini(env, m);
4371 cfs_free_nidlist(&m->mdt_squash.rsi_nosquash_nids);
4373 mdt_seq_fini(env, m);
4374 mdt_fld_fini(env, m);
4376 next->md_ops->mdo_init_capa_ctxt(env, next, 0, 0, 0, NULL);
4377 cfs_timer_disarm(&m->mdt_ck_timer);
4378 mdt_ck_thread_stop(m);
4383 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4385 LASSERT(atomic_read(&d->ld_ref) == 0);
4387 server_put_mount(mdt_obd_name(m), true);
4392 static int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4394 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4395 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4397 struct mdt_thread_info *info;
4398 struct obd_device *obd;
4399 const char *dev = lustre_cfg_string(cfg, 0);
4400 const char *num = lustre_cfg_string(cfg, 2);
4401 struct lustre_mount_info *lmi = NULL;
4402 struct lustre_sb_info *lsi;
4404 struct seq_server_site *ss_site;
4405 const char *identity_upcall = "NONE";
4406 struct md_device *next;
4412 lu_device_init(&m->mdt_lu_dev, ldt);
4414 * Environment (env) might be missing mdt_thread_key values at that
4415 * point, if device is allocated when mdt_thread_key is in QUIESCENT
4418 * Usually device allocation path doesn't use module key values, but
4419 * mdt has to do a lot of work here, so allocate key value.
4421 rc = lu_env_refill((struct lu_env *)env);
4425 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4426 LASSERT(info != NULL);
4428 obd = class_name2obd(dev);
4429 LASSERT(obd != NULL);
4431 m->mdt_max_mdsize = MAX_MD_SIZE; /* 4 stripes */
4433 m->mdt_som_conf = 0;
4435 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
4437 /* default is coordinator off, it is started through conf_param
4439 m->mdt_opts.mo_coordinator = 0;
4441 lmi = server_get_mount(dev);
4443 CERROR("Cannot get mount info for %s!\n", dev);
4446 lsi = s2lsi(lmi->lmi_sb);
4447 /* CMD is supported only in IAM mode */
4449 node_id = simple_strtol(num, NULL, 10);
4450 obd->u.obt.obt_magic = OBT_MAGIC;
4453 spin_lock_init(&m->mdt_ioepoch_lock);
4454 m->mdt_capa_timeout = CAPA_TIMEOUT;
4455 m->mdt_capa_alg = CAPA_HMAC_ALG_SHA1;
4456 m->mdt_ck_timeout = CAPA_KEY_TIMEOUT;
4457 m->mdt_squash.rsi_uid = 0;
4458 m->mdt_squash.rsi_gid = 0;
4459 INIT_LIST_HEAD(&m->mdt_squash.rsi_nosquash_nids);
4460 init_rwsem(&m->mdt_squash.rsi_sem);
4461 spin_lock_init(&m->mdt_osfs_lock);
4462 m->mdt_osfs_age = cfs_time_shift_64(-1000);
4463 m->mdt_enable_remote_dir = 0;
4464 m->mdt_enable_remote_dir_gid = 0;
4466 m->mdt_lu_dev.ld_ops = &mdt_lu_ops;
4467 m->mdt_lu_dev.ld_obd = obd;
4468 /* Set this lu_device to obd for error handling purposes. */
4469 obd->obd_lu_dev = &m->mdt_lu_dev;
4471 /* init the stack */
4472 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
4474 CERROR("%s: Can't init device stack, rc %d\n",
4475 mdt_obd_name(m), rc);
4480 ss_site = mdt_seq_site(m);
4481 s->ld_seq_site = ss_site;
4484 /* set server index */
4485 ss_site->ss_node_id = node_id;
4487 /* failover is the default
4488 * FIXME: we do not failout mds0/mgs, which may cause some problems.
4489 * assumed whose ss_node_id == 0 XXX
4491 obd->obd_replayable = 1;
4492 /* No connection accepted until configurations will finish */
4493 obd->obd_no_conn = 1;
4495 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
4496 char *str = lustre_cfg_string(cfg, 4);
4497 if (strchr(str, 'n')) {
4498 CWARN("%s: recovery disabled\n", mdt_obd_name(m));
4499 obd->obd_replayable = 0;
4503 rc = mdt_fld_init(env, mdt_obd_name(m), m);
4505 GOTO(err_fini_stack, rc);
4507 rc = mdt_seq_init(env, m);
4509 GOTO(err_fini_fld, rc);
4511 snprintf(info->mti_u.ns_name, sizeof(info->mti_u.ns_name), "%s-%s",
4512 LUSTRE_MDT_NAME, obd->obd_uuid.uuid);
4513 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
4514 LDLM_NAMESPACE_SERVER,
4515 LDLM_NAMESPACE_GREEDY,
4517 if (m->mdt_namespace == NULL)
4518 GOTO(err_fini_seq, rc = -ENOMEM);
4520 m->mdt_namespace->ns_lvbp = m;
4521 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
4523 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
4524 /* set obd_namespace for compatibility with old code */
4525 obd->obd_namespace = m->mdt_namespace;
4527 cfs_timer_init(&m->mdt_ck_timer, mdt_ck_timer_callback, m);
4529 rc = mdt_hsm_cdt_init(m);
4531 CERROR("%s: error initializing coordinator, rc %d\n",
4532 mdt_obd_name(m), rc);
4533 GOTO(err_free_ns, rc);
4536 rc = mdt_ck_thread_start(m);
4538 GOTO(err_free_hsm, rc);
4540 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom, mdt_common_slice,
4541 OBD_FAIL_MDS_ALL_REQUEST_NET,
4542 OBD_FAIL_MDS_ALL_REPLY_NET);
4546 rc = mdt_fs_setup(env, m, obd, lsi);
4550 tgt_adapt_sptlrpc_conf(&m->mdt_lut, 1);
4552 next = m->mdt_child;
4553 rc = next->md_ops->mdo_iocontrol(env, next, OBD_IOC_GET_MNTOPT, 0,
4556 GOTO(err_fs_cleanup, rc);
4558 if (mntopts & MNTOPT_USERXATTR)
4559 m->mdt_opts.mo_user_xattr = 1;
4561 m->mdt_opts.mo_user_xattr = 0;
4563 rc = next->md_ops->mdo_maxeasize_get(env, next, &m->mdt_max_ea_size);
4565 GOTO(err_fs_cleanup, rc);
4567 if (mntopts & MNTOPT_ACL)
4568 m->mdt_opts.mo_acl = 1;
4570 m->mdt_opts.mo_acl = 0;
4572 /* XXX: to support suppgid for ACL, we enable identity_upcall
4573 * by default, otherwise, maybe got unexpected -EACCESS. */
4574 if (m->mdt_opts.mo_acl)
4575 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
4577 m->mdt_identity_cache = upcall_cache_init(mdt_obd_name(m),
4579 &mdt_identity_upcall_cache_ops);
4580 if (IS_ERR(m->mdt_identity_cache)) {
4581 rc = PTR_ERR(m->mdt_identity_cache);
4582 m->mdt_identity_cache = NULL;
4583 GOTO(err_fs_cleanup, rc);
4586 rc = mdt_procfs_init(m, dev);
4588 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
4589 GOTO(err_recovery, rc);
4592 rc = mdt_quota_init(env, m, cfg);
4594 GOTO(err_procfs, rc);
4596 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
4597 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
4598 "mdt_ldlm_client", m->mdt_ldlm_client);
4600 ping_evictor_start();
4602 /* recovery will be started upon mdt_prepare()
4603 * when the whole stack is complete and ready
4604 * to serve the requests */
4606 mdt_init_capa_ctxt(env, m);
4608 /* Reduce the initial timeout on an MDS because it doesn't need such
4609 * a long timeout as an OST does. Adaptive timeouts will adjust this
4610 * value appropriately. */
4611 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
4612 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
4618 target_recovery_fini(obd);
4619 upcall_cache_cleanup(m->mdt_identity_cache);
4620 m->mdt_identity_cache = NULL;
4622 mdt_fs_cleanup(env, m);
4624 tgt_fini(env, &m->mdt_lut);
4626 cfs_timer_disarm(&m->mdt_ck_timer);
4627 mdt_ck_thread_stop(m);
4629 mdt_hsm_cdt_fini(m);
4631 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
4632 obd->obd_namespace = m->mdt_namespace = NULL;
4634 mdt_seq_fini(env, m);
4636 mdt_fld_fini(env, m);
4638 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4641 server_put_mount(dev, true);
4645 /* For interoperability, the left element is old parameter, the right one
4646 * is the new version of the parameter, if some parameter is deprecated,
4647 * the new version should be set as NULL. */
4648 static struct cfg_interop_param mdt_interop_param[] = {
4649 { "mdt.group_upcall", NULL },
4650 { "mdt.quota_type", NULL },
4651 { "mdd.quota_type", NULL },
4652 { "mdt.rootsquash", "mdt.root_squash" },
4653 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
4657 /* used by MGS to process specific configurations */
4658 static int mdt_process_config(const struct lu_env *env,
4659 struct lu_device *d, struct lustre_cfg *cfg)
4661 struct mdt_device *m = mdt_dev(d);
4662 struct md_device *md_next = m->mdt_child;
4663 struct lu_device *next = md2lu_dev(md_next);
4667 switch (cfg->lcfg_command) {
4669 struct lprocfs_static_vars lvars;
4670 struct obd_device *obd = d->ld_obd;
4672 /* For interoperability */
4673 struct cfg_interop_param *ptr = NULL;
4674 struct lustre_cfg *old_cfg = NULL;
4677 param = lustre_cfg_string(cfg, 1);
4678 if (param == NULL) {
4679 CERROR("param is empty\n");
4684 ptr = class_find_old_param(param, mdt_interop_param);
4686 if (ptr->new_param == NULL) {
4688 CWARN("For interoperability, skip this %s."
4689 " It is obsolete.\n", ptr->old_param);
4693 CWARN("Found old param %s, changed it to %s.\n",
4694 ptr->old_param, ptr->new_param);
4697 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
4704 lprocfs_mdt_init_vars(&lvars);
4705 rc = class_process_proc_param(PARAM_MDT, lvars.obd_vars,
4707 if (rc > 0 || rc == -ENOSYS) {
4708 /* is it an HSM var ? */
4709 rc = class_process_proc_param(PARAM_HSM,
4710 hsm_cdt_get_proc_vars(),
4712 if (rc > 0 || rc == -ENOSYS)
4713 /* we don't understand; pass it on */
4714 rc = next->ld_ops->ldo_process_config(env, next,
4718 if (old_cfg != NULL)
4719 lustre_cfg_free(cfg);
4724 /* others are passed further */
4725 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4731 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
4732 const struct lu_object_header *hdr,
4733 struct lu_device *d)
4735 struct mdt_object *mo;
4739 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, GFP_NOFS);
4741 struct lu_object *o;
4742 struct lu_object_header *h;
4745 h = &mo->mot_header;
4746 lu_object_header_init(h);
4747 lu_object_init(o, h, d);
4748 lu_object_add_top(h, o);
4749 o->lo_ops = &mdt_obj_ops;
4750 mutex_init(&mo->mot_ioepoch_mutex);
4751 mutex_init(&mo->mot_lov_mutex);
4752 init_rwsem(&mo->mot_open_sem);
4758 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
4759 const struct lu_object_conf *unused)
4761 struct mdt_device *d = mdt_dev(o->lo_dev);
4762 struct lu_device *under;
4763 struct lu_object *below;
4767 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
4768 PFID(lu_object_fid(o)));
4770 under = &d->mdt_child->md_lu_dev;
4771 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
4772 if (below != NULL) {
4773 lu_object_add(o, below);
4780 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
4782 struct mdt_object *mo = mdt_obj(o);
4783 struct lu_object_header *h;
4787 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
4788 PFID(lu_object_fid(o)));
4790 LASSERT(atomic_read(&mo->mot_open_count) == 0);
4791 LASSERT(atomic_read(&mo->mot_lease_count) == 0);
4794 lu_object_header_fini(h);
4795 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
4800 static int mdt_object_print(const struct lu_env *env, void *cookie,
4801 lu_printer_t p, const struct lu_object *o)
4803 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
4804 return (*p)(env, cookie, LUSTRE_MDT_NAME"-object@%p(ioepoch="LPU64" "
4805 "flags="LPX64", epochcount=%d, writecount=%d)",
4806 mdto, mdto->mot_ioepoch, mdto->mot_flags,
4807 mdto->mot_ioepoch_count, mdto->mot_writecount);
4810 static int mdt_prepare(const struct lu_env *env,
4811 struct lu_device *pdev,
4812 struct lu_device *cdev)
4814 struct mdt_device *mdt = mdt_dev(cdev);
4815 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
4816 struct obd_device *obd = cdev->ld_obd;
4823 rc = next->ld_ops->ldo_prepare(env, cdev, next);
4827 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
4831 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_AGENT_ORIG_CTXT);
4835 rc = lfsck_register_namespace(env, mdt->mdt_bottom, mdt->mdt_namespace);
4836 /* The LFSCK instance is registered just now, so it must be there when
4837 * register the namespace to such instance. */
4838 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
4840 if (mdt->mdt_seq_site.ss_node_id == 0) {
4841 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
4842 &mdt->mdt_md_root_fid);
4847 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
4848 target_recovery_init(&mdt->mdt_lut, tgt_request_handle);
4849 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
4850 LASSERT(obd->obd_no_conn);
4851 spin_lock(&obd->obd_dev_lock);
4852 obd->obd_no_conn = 0;
4853 spin_unlock(&obd->obd_dev_lock);
4855 if (obd->obd_recovering == 0)
4856 mdt_postrecov(env, mdt);
4861 const struct lu_device_operations mdt_lu_ops = {
4862 .ldo_object_alloc = mdt_object_alloc,
4863 .ldo_process_config = mdt_process_config,
4864 .ldo_prepare = mdt_prepare,
4867 static const struct lu_object_operations mdt_obj_ops = {
4868 .loo_object_init = mdt_object_init,
4869 .loo_object_free = mdt_object_free,
4870 .loo_object_print = mdt_object_print
4873 static int mdt_obd_set_info_async(const struct lu_env *env,
4874 struct obd_export *exp,
4875 __u32 keylen, void *key,
4876 __u32 vallen, void *val,
4877 struct ptlrpc_request_set *set)
4883 if (KEY_IS(KEY_SPTLRPC_CONF)) {
4884 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp), 0);
4892 * Match client and server connection feature flags.
4894 * Compute the compatibility flags for a connection request based on
4895 * features mutually supported by client and server.
4897 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
4898 * must not be updated here, otherwise a partially initialized value may
4899 * be exposed. After the connection request is successfully processed,
4900 * the top-level MDT connect request handler atomically updates the export
4901 * connect flags from the obd_connect_data::ocd_connect_flags field of the
4902 * reply. \see mdt_connect().
4904 * \param exp the obd_export associated with this client/target pair
4905 * \param mdt the target device for the connection
4906 * \param data stores data for this connect request
4909 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
4910 * \retval -EBADE client and server feature requirements are incompatible
4912 static int mdt_connect_internal(struct obd_export *exp,
4913 struct mdt_device *mdt,
4914 struct obd_connect_data *data)
4916 LASSERT(data != NULL);
4918 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
4919 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
4921 /* If no known bits (which should not happen, probably,
4922 as everybody should support LOOKUP and UPDATE bits at least)
4923 revert to compat mode with plain locks. */
4924 if (!data->ocd_ibits_known &&
4925 data->ocd_connect_flags & OBD_CONNECT_IBITS)
4926 data->ocd_connect_flags &= ~OBD_CONNECT_IBITS;
4928 if (!mdt->mdt_opts.mo_acl)
4929 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
4931 if (!mdt->mdt_opts.mo_user_xattr)
4932 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
4934 if (!mdt->mdt_som_conf)
4935 data->ocd_connect_flags &= ~OBD_CONNECT_SOM;
4937 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
4938 data->ocd_brw_size = min(data->ocd_brw_size,
4939 (__u32)MD_MAX_BRW_SIZE);
4940 if (data->ocd_brw_size == 0) {
4941 CERROR("%s: cli %s/%p ocd_connect_flags: "LPX64
4942 " ocd_version: %x ocd_grant: %d "
4943 "ocd_index: %u ocd_brw_size is "
4944 "unexpectedly zero, network data "
4945 "corruption? Refusing connection of this"
4948 exp->exp_client_uuid.uuid,
4949 exp, data->ocd_connect_flags, data->ocd_version,
4950 data->ocd_grant, data->ocd_index);
4955 /* NB: Disregard the rule against updating
4956 * exp_connect_data.ocd_connect_flags in this case, since
4957 * tgt_client_new() needs to know if this is a lightweight
4958 * connection, and it is safe to expose this flag before
4959 * connection processing completes. */
4960 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
4961 spin_lock(&exp->exp_lock);
4962 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
4963 spin_unlock(&exp->exp_lock);
4966 data->ocd_version = LUSTRE_VERSION_CODE;
4968 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
4969 CWARN("%s: MDS requires FID support, but client not\n",
4974 if (mdt->mdt_som_conf &&
4975 !(data->ocd_connect_flags & (OBD_CONNECT_LIGHTWEIGHT |
4976 OBD_CONNECT_MDS_MDS |
4977 OBD_CONNECT_SOM))) {
4978 CWARN("%s: MDS has SOM enabled, but client does not support "
4979 "it\n", mdt_obd_name(mdt));
4983 if (OCD_HAS_FLAG(data, PINGLESS)) {
4984 if (ptlrpc_pinger_suppress_pings()) {
4985 spin_lock(&exp->exp_obd->obd_dev_lock);
4986 list_del_init(&exp->exp_obd_chain_timed);
4987 spin_unlock(&exp->exp_obd->obd_dev_lock);
4989 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
4993 data->ocd_max_easize = mdt->mdt_max_ea_size;
4998 /* mds_connect copy */
4999 static int mdt_obd_connect(const struct lu_env *env,
5000 struct obd_export **exp, struct obd_device *obd,
5001 struct obd_uuid *cluuid,
5002 struct obd_connect_data *data,
5005 struct obd_export *lexp;
5006 struct lustre_handle conn = { 0 };
5007 struct mdt_device *mdt;
5011 LASSERT(env != NULL);
5012 if (!exp || !obd || !cluuid)
5015 mdt = mdt_dev(obd->obd_lu_dev);
5018 * first, check whether the stack is ready to handle requests
5019 * XXX: probably not very appropriate method is used now
5020 * at some point we should find a better one
5022 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) && data != NULL &&
5023 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
5024 rc = obd_get_info(env, mdt->mdt_child_exp,
5025 sizeof(KEY_OSP_CONNECTED),
5026 KEY_OSP_CONNECTED, NULL, NULL, NULL);
5029 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
5032 rc = class_connect(&conn, obd, cluuid);
5036 lexp = class_conn2export(&conn);
5037 LASSERT(lexp != NULL);
5039 rc = mdt_connect_internal(lexp, mdt, data);
5041 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
5044 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5045 rc = tgt_client_new(env, lexp);
5047 mdt_export_stats_init(obd, lexp, localdata);
5049 /* For phase I, sync for cross-ref operation. */
5050 lexp->exp_keep_sync = 1;
5054 class_disconnect(lexp);
5063 static int mdt_obd_reconnect(const struct lu_env *env,
5064 struct obd_export *exp, struct obd_device *obd,
5065 struct obd_uuid *cluuid,
5066 struct obd_connect_data *data,
5072 if (exp == NULL || obd == NULL || cluuid == NULL)
5075 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
5077 mdt_export_stats_init(obd, exp, localdata);
5082 static int mdt_ctxt_add_dirty_flag(struct lu_env *env,
5083 struct mdt_thread_info *info,
5084 struct mdt_file_data *mfd)
5086 struct lu_context ses;
5090 rc = lu_context_init(&ses, LCT_SERVER_SESSION);
5095 lu_context_enter(&ses);
5097 mdt_ucred(info)->uc_valid = UCRED_OLD;
5098 rc = mdt_add_dirty_flag(info, mfd->mfd_object, &info->mti_attr);
5100 lu_context_exit(&ses);
5101 lu_context_fini(&ses);
5107 static int mdt_export_cleanup(struct obd_export *exp)
5109 struct mdt_export_data *med = &exp->exp_mdt_data;
5110 struct obd_device *obd = exp->exp_obd;
5111 struct mdt_device *mdt;
5112 struct mdt_thread_info *info;
5114 CFS_LIST_HEAD(closing_list);
5115 struct mdt_file_data *mfd, *n;
5119 spin_lock(&med->med_open_lock);
5120 while (!cfs_list_empty(&med->med_open_head)) {
5121 cfs_list_t *tmp = med->med_open_head.next;
5122 mfd = cfs_list_entry(tmp, struct mdt_file_data, mfd_list);
5124 /* Remove mfd handle so it can't be found again.
5125 * We are consuming the mfd_list reference here. */
5126 class_handle_unhash(&mfd->mfd_handle);
5127 cfs_list_move_tail(&mfd->mfd_list, &closing_list);
5129 spin_unlock(&med->med_open_lock);
5130 mdt = mdt_dev(obd->obd_lu_dev);
5131 LASSERT(mdt != NULL);
5133 rc = lu_env_init(&env, LCT_MD_THREAD);
5137 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5138 LASSERT(info != NULL);
5139 memset(info, 0, sizeof *info);
5140 info->mti_env = &env;
5141 info->mti_mdt = mdt;
5142 info->mti_exp = exp;
5144 if (!cfs_list_empty(&closing_list)) {
5145 struct md_attr *ma = &info->mti_attr;
5147 /* Close any open files (which may also cause orphan unlinking). */
5148 cfs_list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
5149 cfs_list_del_init(&mfd->mfd_list);
5150 ma->ma_need = ma->ma_valid = 0;
5152 /* This file is being closed due to an eviction, it
5153 * could have been modified and now dirty regarding to
5154 * HSM archive, check this!
5155 * The logic here is to mark a file dirty if there's a
5156 * chance it was dirtied before the client was evicted,
5157 * so that we don't have to wait for a release attempt
5158 * before finding out the file was actually dirty and
5159 * fail the release. Aggressively marking it dirty here
5160 * will cause the policy engine to attempt to
5161 * re-archive it; when rearchiving, we can compare the
5162 * current version to the HSM data_version and make the
5163 * archive request into a noop if it's not actually
5166 if (mfd->mfd_mode & (FMODE_WRITE|MDS_FMODE_TRUNC))
5167 rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
5169 /* Don't unlink orphan on failover umount, LU-184 */
5170 if (exp->exp_flags & OBD_OPT_FAILOVER) {
5171 ma->ma_valid = MA_FLAGS;
5172 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
5174 mdt_mfd_close(info, mfd);
5177 info->mti_mdt = NULL;
5178 /* cleanup client slot early */
5179 /* Do not erase record for recoverable client. */
5180 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
5181 tgt_client_del(&env, exp);
5187 static int mdt_obd_disconnect(struct obd_export *exp)
5193 class_export_get(exp);
5195 rc = server_disconnect_export(exp);
5197 CDEBUG(D_IOCTL, "server disconnect error: %d\n", rc);
5199 rc = mdt_export_cleanup(exp);
5200 class_export_put(exp);
5204 /* FIXME: Can we avoid using these two interfaces? */
5205 static int mdt_init_export(struct obd_export *exp)
5207 struct mdt_export_data *med = &exp->exp_mdt_data;
5211 CFS_INIT_LIST_HEAD(&med->med_open_head);
5212 spin_lock_init(&med->med_open_lock);
5213 mutex_init(&med->med_idmap_mutex);
5214 med->med_idmap = NULL;
5215 spin_lock(&exp->exp_lock);
5216 exp->exp_connecting = 1;
5217 spin_unlock(&exp->exp_lock);
5219 /* self-export doesn't need client data and ldlm initialization */
5220 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5221 &exp->exp_client_uuid)))
5224 rc = tgt_client_alloc(exp);
5228 rc = ldlm_init_export(exp);
5235 tgt_client_free(exp);
5237 CERROR("%s: Failed to initialize export: rc = %d\n",
5238 exp->exp_obd->obd_name, rc);
5242 static int mdt_destroy_export(struct obd_export *exp)
5246 if (exp_connect_rmtclient(exp))
5247 mdt_cleanup_idmap(&exp->exp_mdt_data);
5249 target_destroy_export(exp);
5250 /* destroy can be called from failed obd_setup, so
5251 * checking uuid is safer than obd_self_export */
5252 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5253 &exp->exp_client_uuid)))
5256 ldlm_destroy_export(exp);
5257 tgt_client_free(exp);
5259 LASSERT(cfs_list_empty(&exp->exp_outstanding_replies));
5260 LASSERT(cfs_list_empty(&exp->exp_mdt_data.med_open_head));
5265 /** The maximum depth that fid2path() will search.
5266 * This is limited only because we want to store the fids for
5267 * historical path lookup purposes.
5269 #define MAX_PATH_DEPTH 100
5271 /** mdt_path() lookup structure. */
5272 struct path_lookup_info {
5273 __u64 pli_recno; /**< history point */
5274 __u64 pli_currec; /**< current record */
5275 struct lu_fid pli_fid;
5276 struct lu_fid pli_fids[MAX_PATH_DEPTH]; /**< path, in fids */
5277 struct mdt_object *pli_mdt_obj;
5278 char *pli_path; /**< full path */
5280 int pli_linkno; /**< which hardlink to follow */
5281 int pli_fidcount; /**< number of \a pli_fids */
5284 int mdt_links_read(struct mdt_thread_info *info, struct mdt_object *mdt_obj,
5285 struct linkea_data *ldata)
5289 LASSERT(ldata->ld_buf->lb_buf != NULL);
5291 if (!mdt_object_exists(mdt_obj))
5294 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5295 ldata->ld_buf, XATTR_NAME_LINK);
5296 if (rc == -ERANGE) {
5297 /* Buf was too small, figure out what we need. */
5298 lu_buf_free(ldata->ld_buf);
5299 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5300 ldata->ld_buf, XATTR_NAME_LINK);
5303 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
5304 if (ldata->ld_buf->lb_buf == NULL)
5306 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5307 ldata->ld_buf, XATTR_NAME_LINK);
5312 return linkea_init(ldata);
5315 static int mdt_path_current(struct mdt_thread_info *info,
5316 struct path_lookup_info *pli)
5318 struct mdt_device *mdt = info->mti_mdt;
5319 struct mdt_object *mdt_obj;
5320 struct link_ea_header *leh;
5321 struct link_ea_entry *lee;
5322 struct lu_name *tmpname = &info->mti_name;
5323 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
5324 struct lu_buf *buf = &info->mti_big_buf;
5327 struct linkea_data ldata = { 0 };
5331 /* temp buffer for path element, the buffer will be finally freed
5332 * in mdt_thread_info_fini */
5333 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
5334 if (buf->lb_buf == NULL)
5338 ptr = pli->pli_path + pli->pli_pathlen - 1;
5341 pli->pli_fidcount = 0;
5342 pli->pli_fids[0] = *(struct lu_fid *)mdt_object_fid(pli->pli_mdt_obj);
5344 /* root FID only exists on MDT0, and fid2path should also ends at MDT0,
5345 * so checking root_fid can only happen on MDT0. */
5346 while (!lu_fid_eq(&mdt->mdt_md_root_fid,
5347 &pli->pli_fids[pli->pli_fidcount])) {
5348 mdt_obj = mdt_object_find(info->mti_env, mdt,
5349 &pli->pli_fids[pli->pli_fidcount]);
5350 if (IS_ERR(mdt_obj))
5351 GOTO(out, rc = PTR_ERR(mdt_obj));
5352 if (mdt_object_remote(mdt_obj)) {
5353 mdt_object_put(info->mti_env, mdt_obj);
5354 GOTO(remote_out, rc = -EREMOTE);
5356 if (!mdt_object_exists(mdt_obj)) {
5357 mdt_object_put(info->mti_env, mdt_obj);
5358 GOTO(out, rc = -ENOENT);
5361 rc = mdt_links_read(info, mdt_obj, &ldata);
5362 mdt_object_put(info->mti_env, mdt_obj);
5367 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
5368 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
5369 /* If set, use link #linkno for path lookup, otherwise use
5370 link #0. Only do this for the final path element. */
5371 if (pli->pli_fidcount == 0 &&
5372 pli->pli_linkno < leh->leh_reccount) {
5374 for (count = 0; count < pli->pli_linkno; count++) {
5375 lee = (struct link_ea_entry *)
5376 ((char *)lee + reclen);
5377 linkea_entry_unpack(lee, &reclen, tmpname,
5380 if (pli->pli_linkno < leh->leh_reccount - 1)
5381 /* indicate to user there are more links */
5385 /* Pack the name in the end of the buffer */
5386 ptr -= tmpname->ln_namelen;
5387 if (ptr - 1 <= pli->pli_path)
5388 GOTO(out, rc = -EOVERFLOW);
5389 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
5392 /* Store the parent fid for historic lookup */
5393 if (++pli->pli_fidcount >= MAX_PATH_DEPTH)
5394 GOTO(out, rc = -EOVERFLOW);
5395 pli->pli_fids[pli->pli_fidcount] = *tmpfid;
5399 ptr++; /* skip leading / */
5400 memmove(pli->pli_path, ptr, pli->pli_path + pli->pli_pathlen - ptr);
5407 /* Returns the full path to this fid, as of changelog record recno. */
5408 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
5409 char *path, int pathlen, __u64 *recno, int *linkno,
5412 struct mdt_device *mdt = info->mti_mdt;
5413 struct path_lookup_info *pli;
5421 if (lu_fid_eq(&mdt->mdt_md_root_fid, mdt_object_fid(obj))) {
5430 pli->pli_mdt_obj = obj;
5431 pli->pli_recno = *recno;
5432 pli->pli_path = path;
5433 pli->pli_pathlen = pathlen;
5434 pli->pli_linkno = *linkno;
5436 /* Retry multiple times in case file is being moved */
5437 while (tries-- && rc == -EAGAIN)
5438 rc = mdt_path_current(info, pli);
5440 /* return the last resolved fids to the client, so the client will
5441 * build the left path on another MDT for remote object */
5442 *fid = pli->pli_fids[pli->pli_fidcount];
5444 *recno = pli->pli_currec;
5445 /* Return next link index to caller */
5446 *linkno = pli->pli_linkno;
5453 static int mdt_fid2path(struct mdt_thread_info *info,
5454 struct getinfo_fid2path *fp)
5456 struct mdt_device *mdt = info->mti_mdt;
5457 struct mdt_object *obj;
5461 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
5462 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
5464 if (!fid_is_sane(&fp->gf_fid))
5467 if (!fid_is_namespace_visible(&fp->gf_fid)) {
5468 CWARN("%s: "DFID" is invalid, sequence should be "
5469 ">= "LPX64"\n", mdt_obd_name(mdt),
5470 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
5474 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
5475 if (obj == NULL || IS_ERR(obj)) {
5476 CDEBUG(D_IOCTL, "no object "DFID": %ld\n", PFID(&fp->gf_fid),
5481 if (mdt_object_remote(obj))
5483 else if (!mdt_object_exists(obj))
5489 mdt_object_put(info->mti_env, obj);
5490 CDEBUG(D_IOCTL, "nonlocal object "DFID": %d\n",
5491 PFID(&fp->gf_fid), rc);
5495 rc = mdt_path(info, obj, fp->gf_path, fp->gf_pathlen, &fp->gf_recno,
5496 &fp->gf_linkno, &fp->gf_fid);
5498 CDEBUG(D_INFO, "fid "DFID", path %s recno "LPX64" linkno %u\n",
5499 PFID(&fp->gf_fid), fp->gf_path, fp->gf_recno, fp->gf_linkno);
5501 mdt_object_put(info->mti_env, obj);
5506 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key,
5507 void *val, int vallen)
5509 struct getinfo_fid2path *fpout, *fpin;
5512 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
5515 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
5516 lustre_swab_fid2path(fpin);
5518 memcpy(fpout, fpin, sizeof(*fpin));
5519 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
5522 rc = mdt_fid2path(info, fpout);
5526 int mdt_get_info(struct tgt_session_info *tsi)
5536 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
5538 CDEBUG(D_IOCTL, "No GETINFO key");
5539 RETURN(err_serious(-EFAULT));
5541 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
5544 vallen = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_VALLEN);
5545 if (vallen == NULL) {
5546 CDEBUG(D_IOCTL, "Unable to get RMF_GETINFO_VALLEN buffer");
5547 RETURN(err_serious(-EFAULT));
5550 req_capsule_set_size(tsi->tsi_pill, &RMF_GETINFO_VAL, RCL_SERVER,
5552 rc = req_capsule_server_pack(tsi->tsi_pill);
5554 RETURN(err_serious(rc));
5556 valout = req_capsule_server_get(tsi->tsi_pill, &RMF_GETINFO_VAL);
5557 if (valout == NULL) {
5558 CDEBUG(D_IOCTL, "Unable to get get-info RPC out buffer");
5559 RETURN(err_serious(-EFAULT));
5562 if (KEY_IS(KEY_FID2PATH)) {
5563 struct mdt_thread_info *info = tsi2mdt_info(tsi);
5565 rc = mdt_rpc_fid2path(info, key, valout, *vallen);
5566 mdt_thread_info_fini(info);
5573 /* Pass the ioc down */
5574 static int mdt_ioc_child(struct lu_env *env, struct mdt_device *mdt,
5575 unsigned int cmd, int len, void *data)
5577 struct lu_context ioctl_session;
5578 struct md_device *next = mdt->mdt_child;
5582 rc = lu_context_init(&ioctl_session, LCT_SERVER_SESSION);
5585 ioctl_session.lc_thread = (struct ptlrpc_thread *)current;
5586 lu_context_enter(&ioctl_session);
5587 env->le_ses = &ioctl_session;
5589 LASSERT(next->md_ops->mdo_iocontrol);
5590 rc = next->md_ops->mdo_iocontrol(env, next, cmd, len, data);
5592 lu_context_exit(&ioctl_session);
5593 lu_context_fini(&ioctl_session);
5597 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
5599 struct obd_ioctl_data *data = karg;
5602 struct mdt_object *obj;
5603 struct mdt_lock_handle *lh;
5607 if (data->ioc_inlbuf1 == NULL || data->ioc_inllen1 != sizeof(*fid) ||
5608 data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
5611 fid = (struct lu_fid *)data->ioc_inlbuf1;
5613 if (!fid_is_sane(fid))
5616 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
5618 lh = &mti->mti_lh[MDT_LH_PARENT];
5619 mdt_lock_reg_init(lh, LCK_CR);
5621 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
5623 RETURN(PTR_ERR(obj));
5625 if (mdt_object_remote(obj)) {
5628 * before calling version get the correct MDS should be
5629 * fid, this is error to find remote object here
5631 CERROR("nonlocal object "DFID"\n", PFID(fid));
5632 } else if (!mdt_object_exists(obj)) {
5633 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
5636 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
5637 *(__u64 *)data->ioc_inlbuf2 = version;
5640 mdt_object_unlock_put(mti, obj, lh, 1);
5644 /* ioctls on obd dev */
5645 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
5646 void *karg, void *uarg)
5649 struct obd_device *obd = exp->exp_obd;
5650 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
5651 struct dt_device *dt = mdt->mdt_bottom;
5655 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
5656 rc = lu_env_init(&env, LCT_MD_THREAD);
5662 rc = mdt_device_sync(&env, mdt);
5664 case OBD_IOC_SET_READONLY:
5665 rc = dt->dd_ops->dt_ro(&env, dt);
5667 case OBD_IOC_ABORT_RECOVERY:
5668 CERROR("%s: Aborting recovery for device\n", mdt_obd_name(mdt));
5669 target_stop_recovery_thread(obd);
5672 case OBD_IOC_CHANGELOG_REG:
5673 case OBD_IOC_CHANGELOG_DEREG:
5674 case OBD_IOC_CHANGELOG_CLEAR:
5675 rc = mdt_ioc_child(&env, mdt, cmd, len, karg);
5677 case OBD_IOC_START_LFSCK: {
5678 struct md_device *next = mdt->mdt_child;
5679 struct obd_ioctl_data *data = karg;
5680 struct lfsck_start_param lsp;
5682 if (unlikely(data == NULL)) {
5687 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
5688 lsp.lsp_index_valid = 0;
5689 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &lsp);
5692 case OBD_IOC_STOP_LFSCK: {
5693 struct md_device *next = mdt->mdt_child;
5694 struct obd_ioctl_data *data = karg;
5695 struct lfsck_stop stop;
5697 stop.ls_status = LS_STOPPED;
5698 /* Old lfsck utils may pass NULL @stop. */
5699 if (data->ioc_inlbuf1 == NULL)
5703 ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
5705 rc = next->md_ops->mdo_iocontrol(&env, next, cmd, 0, &stop);
5708 case OBD_IOC_GET_OBJ_VERSION: {
5709 struct mdt_thread_info *mti;
5710 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5711 memset(mti, 0, sizeof *mti);
5712 mti->mti_env = &env;
5716 rc = mdt_ioc_version_get(mti, karg);
5719 case OBD_IOC_CATLOGLIST: {
5720 struct mdt_thread_info *mti;
5722 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5723 lu_local_obj_fid(&mti->mti_tmp_fid1, LLOG_CATALOGS_OID);
5724 rc = llog_catalog_list(&env, mdt->mdt_bottom, 0, karg,
5725 &mti->mti_tmp_fid1);
5730 CERROR("%s: Not supported cmd = %d, rc = %d\n",
5731 mdt_obd_name(mdt), cmd, rc);
5738 static int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
5740 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
5741 struct lfsck_start_param lsp;
5745 lsp.lsp_start = NULL;
5746 lsp.lsp_index_valid = 0;
5747 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
5748 OBD_IOC_START_LFSCK,
5750 if (rc != 0 && rc != -EALREADY)
5751 CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
5752 mdt_obd_name(mdt), rc);
5754 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
5758 static int mdt_obd_postrecov(struct obd_device *obd)
5763 rc = lu_env_init(&env, LCT_MD_THREAD);
5766 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
5771 static struct obd_ops mdt_obd_device_ops = {
5772 .o_owner = THIS_MODULE,
5773 .o_set_info_async = mdt_obd_set_info_async,
5774 .o_connect = mdt_obd_connect,
5775 .o_reconnect = mdt_obd_reconnect,
5776 .o_disconnect = mdt_obd_disconnect,
5777 .o_init_export = mdt_init_export,
5778 .o_destroy_export = mdt_destroy_export,
5779 .o_iocontrol = mdt_iocontrol,
5780 .o_postrecov = mdt_obd_postrecov,
5783 static struct lu_device* mdt_device_fini(const struct lu_env *env,
5784 struct lu_device *d)
5786 struct mdt_device *m = mdt_dev(d);
5793 static struct lu_device *mdt_device_free(const struct lu_env *env,
5794 struct lu_device *d)
5796 struct mdt_device *m = mdt_dev(d);
5799 lu_device_fini(&m->mdt_lu_dev);
5805 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
5806 struct lu_device_type *t,
5807 struct lustre_cfg *cfg)
5809 struct lu_device *l;
5810 struct mdt_device *m;
5817 rc = mdt_init0(env, m, t, cfg);
5819 mdt_device_free(env, l);
5824 l = ERR_PTR(-ENOMEM);
5828 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
5829 LU_KEY_INIT(mdt, struct mdt_thread_info);
5831 static void mdt_key_fini(const struct lu_context *ctx,
5832 struct lu_context_key *key, void* data)
5834 struct mdt_thread_info *info = data;
5836 if (info->mti_big_lmm) {
5837 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
5838 info->mti_big_lmm = NULL;
5839 info->mti_big_lmmsize = 0;
5844 /* context key: mdt_thread_key */
5845 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
5847 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
5849 return lu_ucred(info->mti_env);
5852 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
5854 return lu_ucred_check(info->mti_env);
5858 * Enable/disable COS (Commit On Sharing).
5860 * Set/Clear the COS flag in mdt options.
5862 * \param mdt mdt device
5863 * \param val 0 disables COS, other values enable COS
5865 void mdt_enable_cos(struct mdt_device *mdt, int val)
5870 mdt->mdt_opts.mo_cos = !!val;
5871 rc = lu_env_init(&env, LCT_LOCAL);
5872 if (unlikely(rc != 0)) {
5873 CWARN("lu_env initialization failed with rc = %d,"
5874 "cannot sync\n", rc);
5877 mdt_device_sync(&env, mdt);
5882 * Check COS (Commit On Sharing) status.
5884 * Return COS flag status.
5886 * \param mdt mdt device
5888 int mdt_cos_is_enabled(struct mdt_device *mdt)
5890 return mdt->mdt_opts.mo_cos != 0;
5893 static struct lu_device_type_operations mdt_device_type_ops = {
5894 .ldto_device_alloc = mdt_device_alloc,
5895 .ldto_device_free = mdt_device_free,
5896 .ldto_device_fini = mdt_device_fini
5899 static struct lu_device_type mdt_device_type = {
5900 .ldt_tags = LU_DEVICE_MD,
5901 .ldt_name = LUSTRE_MDT_NAME,
5902 .ldt_ops = &mdt_device_type_ops,
5903 .ldt_ctx_tags = LCT_MD_THREAD
5906 static int __init mdt_mod_init(void)
5908 struct lprocfs_static_vars lvars;
5911 CLASSERT(sizeof("0x0123456789ABCDEF:0x01234567:0x01234567") ==
5912 FID_NOBRACE_LEN + 1);
5913 CLASSERT(sizeof("[0x0123456789ABCDEF:0x01234567:0x01234567]") ==
5915 rc = lu_kmem_init(mdt_caches);
5919 rc = mds_mod_init();
5923 lprocfs_mdt_init_vars(&lvars);
5924 rc = class_register_type(&mdt_obd_device_ops, NULL, true, NULL,
5925 #ifndef HAVE_ONLY_PROCFS_SEQ
5928 LUSTRE_MDT_NAME, &mdt_device_type);
5933 lu_kmem_fini(mdt_caches);
5940 static void __exit mdt_mod_exit(void)
5942 class_unregister_type(LUSTRE_MDT_NAME);
5944 lu_kmem_fini(mdt_caches);
5947 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
5948 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
5949 MODULE_LICENSE("GPL");
5951 cfs_module(mdt, LUSTRE_VERSION_STRING, mdt_mod_init, mdt_mod_exit);