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 /* struct ptlrpc_request */
57 #include <lustre_net.h>
58 /* struct obd_export */
59 #include <lustre_export.h>
60 /* struct obd_device */
63 #include <dt_object.h>
64 #include <lustre_mds.h>
65 #include <lustre_mdt.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_linkea.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 cfs_mem_cache_t *mdt_object_kmem;
103 static struct lu_kmem_descr mdt_caches[] = {
105 .ckd_cache = &mdt_object_kmem,
106 .ckd_name = "mdt_obj",
107 .ckd_size = sizeof(struct mdt_object)
114 int mdt_get_disposition(struct ldlm_reply *rep, int flag)
118 return (rep->lock_policy_res1 & flag);
121 void mdt_clear_disposition(struct mdt_thread_info *info,
122 struct ldlm_reply *rep, int flag)
125 info->mti_opdata &= ~flag;
127 rep->lock_policy_res1 &= ~flag;
130 void mdt_set_disposition(struct mdt_thread_info *info,
131 struct ldlm_reply *rep, int flag)
134 info->mti_opdata |= flag;
136 rep->lock_policy_res1 |= flag;
139 void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm)
141 lh->mlh_pdo_hash = 0;
142 lh->mlh_reg_mode = lm;
143 lh->mlh_rreg_mode = lm;
144 lh->mlh_type = MDT_REG_LOCK;
147 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, ldlm_mode_t lm,
148 const char *name, int namelen)
150 lh->mlh_reg_mode = lm;
151 lh->mlh_rreg_mode = lm;
152 lh->mlh_type = MDT_PDO_LOCK;
154 if (name != NULL && (name[0] != '\0')) {
155 LASSERT(namelen > 0);
156 lh->mlh_pdo_hash = full_name_hash(name, namelen);
158 LASSERT(namelen == 0);
159 lh->mlh_pdo_hash = 0ull;
163 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
164 struct mdt_lock_handle *lh)
170 * Any dir access needs couple of locks:
172 * 1) on part of dir we gonna take lookup/modify;
174 * 2) on whole dir to protect it from concurrent splitting and/or to
175 * flush client's cache for readdir().
177 * so, for a given mode and object this routine decides what lock mode
178 * to use for lock #2:
180 * 1) if caller's gonna lookup in dir then we need to protect dir from
181 * being splitted only - LCK_CR
183 * 2) if caller's gonna modify dir then we need to protect dir from
184 * being splitted and to flush cache - LCK_CW
186 * 3) if caller's gonna modify dir and that dir seems ready for
187 * splitting then we need to protect it from any type of access
188 * (lookup/modify/split) - LCK_EX --bzzz
191 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
192 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
195 * Ask underlaying level its opinion about preferable PDO lock mode
196 * having access type passed as regular lock mode:
198 * - MDL_MINMODE means that lower layer does not want to specify lock
201 * - MDL_NL means that no PDO lock should be taken. This is used in some
202 * cases. Say, for non-splittable directories no need to use PDO locks
205 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
206 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
208 if (mode != MDL_MINMODE) {
209 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
212 * Lower layer does not want to specify locking mode. We do it
213 * our selves. No special protection is needed, just flush
214 * client's cache on modification and allow concurrent
217 switch (lh->mlh_reg_mode) {
219 lh->mlh_pdo_mode = LCK_EX;
222 lh->mlh_pdo_mode = LCK_CR;
225 lh->mlh_pdo_mode = LCK_CW;
228 CERROR("Not expected lock type (0x%x)\n",
229 (int)lh->mlh_reg_mode);
234 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
238 int mdt_getstatus(struct mdt_thread_info *info)
240 struct mdt_device *mdt = info->mti_mdt;
241 struct mdt_body *repbody;
245 rc = mdt_check_ucred(info);
247 RETURN(err_serious(rc));
249 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK))
250 RETURN(err_serious(-ENOMEM));
252 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
253 repbody->fid1 = mdt->mdt_md_root_fid;
254 repbody->valid |= OBD_MD_FLID;
256 if (mdt->mdt_opts.mo_mds_capa &&
257 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
258 struct mdt_object *root;
259 struct lustre_capa *capa;
261 root = mdt_object_find(info->mti_env, mdt, &repbody->fid1);
263 RETURN(PTR_ERR(root));
265 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
267 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
268 rc = mo_capa_get(info->mti_env, mdt_object_child(root), capa,
270 mdt_object_put(info->mti_env, root);
272 repbody->valid |= OBD_MD_FLMDSCAPA;
278 int mdt_statfs(struct mdt_thread_info *info)
280 struct ptlrpc_request *req = mdt_info_req(info);
281 struct md_device *next = info->mti_mdt->mdt_child;
282 struct ptlrpc_service_part *svcpt;
283 struct obd_statfs *osfs;
288 svcpt = info->mti_pill->rc_req->rq_rqbd->rqbd_svcpt;
290 /* This will trigger a watchdog timeout */
291 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
292 (MDT_SERVICE_WATCHDOG_FACTOR *
293 at_get(&svcpt->scp_at_estimate)) + 1);
295 rc = mdt_check_ucred(info);
297 RETURN(err_serious(rc));
299 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
300 RETURN(err_serious(-ENOMEM));
302 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
306 /** statfs information are cached in the mdt_device */
307 if (cfs_time_before_64(info->mti_mdt->mdt_osfs_age,
308 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS))) {
309 /** statfs data is too old, get up-to-date one */
310 rc = next->md_ops->mdo_statfs(info->mti_env, next, osfs);
313 spin_lock(&info->mti_mdt->mdt_osfs_lock);
314 info->mti_mdt->mdt_osfs = *osfs;
315 info->mti_mdt->mdt_osfs_age = cfs_time_current_64();
316 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
318 /** use cached statfs data */
319 spin_lock(&info->mti_mdt->mdt_osfs_lock);
320 *osfs = info->mti_mdt->mdt_osfs;
321 spin_unlock(&info->mti_mdt->mdt_osfs_lock);
325 mdt_counter_incr(req, LPROC_MDT_STATFS);
331 * Pack SOM attributes into the reply.
332 * Call under a DLM UPDATE lock.
334 static void mdt_pack_size2body(struct mdt_thread_info *info,
335 struct mdt_object *mo)
338 struct md_attr *ma = &info->mti_attr;
340 LASSERT(ma->ma_attr.la_valid & LA_MODE);
341 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
343 /* Check if Size-on-MDS is supported, if this is a regular file,
344 * if SOM is enabled on the object and if SOM cache exists and valid.
345 * Otherwise do not pack Size-on-MDS attributes to the reply. */
346 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
347 !S_ISREG(ma->ma_attr.la_mode) ||
348 !mdt_object_is_som_enabled(mo) ||
349 !(ma->ma_valid & MA_SOM))
352 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
353 b->size = ma->ma_som->msd_size;
354 b->blocks = ma->ma_som->msd_blocks;
357 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
358 const struct lu_attr *attr, const struct lu_fid *fid)
360 struct md_attr *ma = &info->mti_attr;
362 LASSERT(ma->ma_valid & MA_INODE);
364 b->atime = attr->la_atime;
365 b->mtime = attr->la_mtime;
366 b->ctime = attr->la_ctime;
367 b->mode = attr->la_mode;
368 b->size = attr->la_size;
369 b->blocks = attr->la_blocks;
370 b->uid = attr->la_uid;
371 b->gid = attr->la_gid;
372 b->flags = attr->la_flags;
373 b->nlink = attr->la_nlink;
374 b->rdev = attr->la_rdev;
376 /*XXX should pack the reply body according to lu_valid*/
377 b->valid |= OBD_MD_FLCTIME | OBD_MD_FLUID |
378 OBD_MD_FLGID | OBD_MD_FLTYPE |
379 OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLFLAGS |
380 OBD_MD_FLATIME | OBD_MD_FLMTIME ;
382 if (!S_ISREG(attr->la_mode)) {
383 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
384 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
385 /* means no objects are allocated on osts. */
386 LASSERT(!(ma->ma_valid & MA_LOV));
387 /* just ignore blocks occupied by extend attributes on MDS */
389 /* if no object is allocated on osts, the size on mds is valid. b=22272 */
390 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
395 b->valid |= OBD_MD_FLID;
396 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, size="LPU64"\n",
397 PFID(fid), b->nlink, b->mode, b->size);
401 mdt_body_reverse_idmap(info, b);
403 if (b->valid & OBD_MD_FLSIZE)
404 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
405 PFID(fid), (unsigned long long)b->size);
408 static inline int mdt_body_has_lov(const struct lu_attr *la,
409 const struct mdt_body *body)
411 return ((S_ISREG(la->la_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
412 (S_ISDIR(la->la_mode) && (body->valid & OBD_MD_FLDIREA )) );
415 void mdt_client_compatibility(struct mdt_thread_info *info)
417 struct mdt_body *body;
418 struct ptlrpc_request *req = mdt_info_req(info);
419 struct obd_export *exp = req->rq_export;
420 struct md_attr *ma = &info->mti_attr;
421 struct lu_attr *la = &ma->ma_attr;
424 if (exp_connect_layout(exp))
425 /* the client can deal with 16-bit lmm_stripe_count */
428 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
430 if (!mdt_body_has_lov(la, body))
433 /* now we have a reply with a lov for a client not compatible with the
434 * layout lock so we have to clean the layout generation number */
435 if (S_ISREG(la->la_mode))
436 ma->ma_lmm->lmm_layout_gen = 0;
440 static int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
443 const struct lu_env *env = info->mti_env;
447 LASSERT(info->mti_big_lmm_used == 0);
448 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL, name);
452 /* big_lmm may need to be grown */
453 if (info->mti_big_lmmsize < rc) {
454 int size = size_roundup_power2(rc);
456 if (info->mti_big_lmmsize > 0) {
457 /* free old buffer */
458 LASSERT(info->mti_big_lmm);
459 OBD_FREE_LARGE(info->mti_big_lmm,
460 info->mti_big_lmmsize);
461 info->mti_big_lmm = NULL;
462 info->mti_big_lmmsize = 0;
465 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
466 if (info->mti_big_lmm == NULL)
468 info->mti_big_lmmsize = size;
470 LASSERT(info->mti_big_lmmsize >= rc);
472 info->mti_buf.lb_buf = info->mti_big_lmm;
473 info->mti_buf.lb_len = info->mti_big_lmmsize;
474 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf, name);
479 int mdt_attr_get_lov(struct mdt_thread_info *info,
480 struct mdt_object *o, struct md_attr *ma)
482 struct md_object *next = mdt_object_child(o);
483 struct lu_buf *buf = &info->mti_buf;
486 buf->lb_buf = ma->ma_lmm;
487 buf->lb_len = ma->ma_lmm_size;
488 rc = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_LOV);
490 ma->ma_lmm_size = rc;
491 ma->ma_valid |= MA_LOV;
493 } else if (rc == -ENODATA) {
496 } else if (rc == -ERANGE) {
497 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LOV);
499 info->mti_big_lmm_used = 1;
500 ma->ma_valid |= MA_LOV;
501 ma->ma_lmm = info->mti_big_lmm;
502 ma->ma_lmm_size = rc;
503 /* update mdt_max_mdsize so all clients
504 * will be aware about that */
505 if (info->mti_mdt->mdt_max_mdsize < rc)
506 info->mti_mdt->mdt_max_mdsize = rc;
514 int mdt_attr_get_pfid(struct mdt_thread_info *info,
515 struct mdt_object *o, struct lu_fid *pfid)
517 struct lu_buf *buf = &info->mti_buf;
518 struct link_ea_header *leh;
519 struct link_ea_entry *lee;
523 buf->lb_buf = info->mti_big_lmm;
524 buf->lb_len = info->mti_big_lmmsize;
525 rc = mo_xattr_get(info->mti_env, mdt_object_child(o),
526 buf, XATTR_NAME_LINK);
527 /* ignore errors, MA_PFID won't be set and it is
528 * up to the caller to treat this as an error */
529 if (rc == -ERANGE || buf->lb_len == 0) {
530 rc = mdt_big_xattr_get(info, o, XATTR_NAME_LINK);
531 buf->lb_buf = info->mti_big_lmm;
532 buf->lb_len = info->mti_big_lmmsize;
537 if (rc < sizeof(*leh)) {
538 CERROR("short LinkEA on "DFID": rc = %d\n",
539 PFID(mdt_object_fid(o)), rc);
543 leh = (struct link_ea_header *) buf->lb_buf;
544 lee = (struct link_ea_entry *)(leh + 1);
545 if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) {
546 leh->leh_magic = LINK_EA_MAGIC;
547 leh->leh_reccount = __swab32(leh->leh_reccount);
548 leh->leh_len = __swab64(leh->leh_len);
550 if (leh->leh_magic != LINK_EA_MAGIC)
552 if (leh->leh_reccount == 0)
555 memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid));
556 fid_be_to_cpu(pfid, pfid);
561 int mdt_attr_get_complex(struct mdt_thread_info *info,
562 struct mdt_object *o, struct md_attr *ma)
564 const struct lu_env *env = info->mti_env;
565 struct md_object *next = mdt_object_child(o);
566 struct lu_buf *buf = &info->mti_buf;
567 u32 mode = lu_object_attr(&next->mo_lu);
568 int need = ma->ma_need;
574 if (need & MA_INODE) {
575 ma->ma_need = MA_INODE;
576 rc = mo_attr_get(env, next, ma);
579 ma->ma_valid |= MA_INODE;
582 if (need & MA_PFID) {
583 rc = mdt_attr_get_pfid(info, o, &ma->ma_pfid);
585 ma->ma_valid |= MA_PFID;
586 /* ignore this error, parent fid is not mandatory */
590 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
591 rc = mdt_attr_get_lov(info, o, ma);
596 if (need & MA_LMV && S_ISDIR(mode)) {
597 buf->lb_buf = ma->ma_lmv;
598 buf->lb_len = ma->ma_lmv_size;
599 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_LMV);
601 ma->ma_lmv_size = rc2;
602 ma->ma_valid |= MA_LMV;
603 } else if (rc2 == -ENODATA) {
610 if (need & MA_SOM && S_ISREG(mode)) {
611 buf->lb_buf = info->mti_xattr_buf;
612 buf->lb_len = sizeof(info->mti_xattr_buf);
613 CLASSERT(sizeof(struct som_attrs) <=
614 sizeof(info->mti_xattr_buf));
615 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_SOM);
616 rc2 = lustre_buf2som(info->mti_xattr_buf, rc2, ma->ma_som);
618 ma->ma_valid |= MA_SOM;
619 else if (rc2 < 0 && rc2 != -ENODATA)
623 if (need & MA_HSM && S_ISREG(mode)) {
624 buf->lb_buf = info->mti_xattr_buf;
625 buf->lb_len = sizeof(info->mti_xattr_buf);
626 CLASSERT(sizeof(struct hsm_attrs) <=
627 sizeof(info->mti_xattr_buf));
628 rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_HSM);
629 rc2 = lustre_buf2hsm(info->mti_xattr_buf, rc2, &ma->ma_hsm);
631 ma->ma_valid |= MA_HSM;
632 else if (rc2 < 0 && rc2 != -ENODATA)
636 #ifdef CONFIG_FS_POSIX_ACL
637 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
638 buf->lb_buf = ma->ma_acl;
639 buf->lb_len = ma->ma_acl_size;
640 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
642 ma->ma_acl_size = rc2;
643 ma->ma_valid |= MA_ACL_DEF;
644 } else if (rc2 == -ENODATA) {
653 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = "LPX64" ma_lmm=%p\n",
654 rc, ma->ma_valid, ma->ma_lmm);
658 static int mdt_getattr_internal(struct mdt_thread_info *info,
659 struct mdt_object *o, int ma_need)
661 struct md_object *next = mdt_object_child(o);
662 const struct mdt_body *reqbody = info->mti_body;
663 struct ptlrpc_request *req = mdt_info_req(info);
664 struct md_attr *ma = &info->mti_attr;
665 struct lu_attr *la = &ma->ma_attr;
666 struct req_capsule *pill = info->mti_pill;
667 const struct lu_env *env = info->mti_env;
668 struct mdt_body *repbody;
669 struct lu_buf *buffer = &info->mti_buf;
674 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
675 RETURN(err_serious(-ENOMEM));
677 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
681 if (mdt_object_remote(o)) {
682 /* This object is located on remote node.*/
683 /* Return -EIO for old client */
684 if (!mdt_is_dne_client(req->rq_export))
685 GOTO(out, rc = -EIO);
687 repbody->fid1 = *mdt_object_fid(o);
688 repbody->valid = OBD_MD_FLID | OBD_MD_MDS;
692 buffer->lb_len = reqbody->eadatasize;
693 if (buffer->lb_len > 0)
694 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
696 buffer->lb_buf = NULL;
698 /* If it is dir object and client require MEA, then we got MEA */
699 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
700 reqbody->valid & OBD_MD_MEA) {
701 /* Assumption: MDT_MD size is enough for lmv size. */
702 ma->ma_lmv = buffer->lb_buf;
703 ma->ma_lmv_size = buffer->lb_len;
704 ma->ma_need = MA_LMV | MA_INODE;
706 ma->ma_lmm = buffer->lb_buf;
707 ma->ma_lmm_size = buffer->lb_len;
708 ma->ma_need = MA_LOV | MA_INODE | MA_HSM;
711 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
712 reqbody->valid & OBD_MD_FLDIREA &&
713 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
714 /* get default stripe info for this dir. */
715 ma->ma_need |= MA_LOV_DEF;
717 ma->ma_need |= ma_need;
718 if (ma->ma_need & MA_SOM)
719 ma->ma_som = &info->mti_u.som.data;
721 rc = mdt_attr_get_complex(info, o, ma);
723 CERROR("getattr error for "DFID": %d\n",
724 PFID(mdt_object_fid(o)), rc);
728 is_root = lu_fid_eq(mdt_object_fid(o), &info->mti_mdt->mdt_md_root_fid);
730 /* the Lustre protocol supposes to return default striping
731 * on the user-visible root if explicitly requested */
732 if ((ma->ma_valid & MA_LOV) == 0 && S_ISDIR(la->la_mode) &&
733 (ma->ma_need & MA_LOV_DEF && is_root) && (ma->ma_need & MA_LOV)) {
734 struct lu_fid rootfid;
735 struct mdt_object *root;
736 struct mdt_device *mdt = info->mti_mdt;
738 rc = dt_root_get(env, mdt->mdt_bottom, &rootfid);
741 root = mdt_object_find(env, mdt, &rootfid);
743 RETURN(PTR_ERR(root));
744 rc = mdt_attr_get_lov(info, root, ma);
745 mdt_object_put(info->mti_env, root);
747 CERROR("getattr error for "DFID": %d\n",
748 PFID(mdt_object_fid(o)), rc);
753 if (likely(ma->ma_valid & MA_INODE))
754 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
758 if (mdt_body_has_lov(la, reqbody)) {
759 if (ma->ma_valid & MA_LOV) {
760 LASSERT(ma->ma_lmm_size);
761 mdt_dump_lmm(D_INFO, ma->ma_lmm);
762 repbody->eadatasize = ma->ma_lmm_size;
763 if (S_ISDIR(la->la_mode))
764 repbody->valid |= OBD_MD_FLDIREA;
766 repbody->valid |= OBD_MD_FLEASIZE;
768 if (ma->ma_valid & MA_LMV) {
769 LASSERT(S_ISDIR(la->la_mode));
770 repbody->eadatasize = ma->ma_lmv_size;
771 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
773 } else if (S_ISLNK(la->la_mode) &&
774 reqbody->valid & OBD_MD_LINKNAME) {
775 buffer->lb_buf = ma->ma_lmm;
776 /* eadatasize from client includes NULL-terminator, so
777 * there is no need to read it */
778 buffer->lb_len = reqbody->eadatasize - 1;
779 rc = mo_readlink(env, next, buffer);
780 if (unlikely(rc <= 0)) {
781 CERROR("readlink failed: %d\n", rc);
784 int print_limit = min_t(int, CFS_PAGE_SIZE - 128, rc);
786 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
788 repbody->valid |= OBD_MD_LINKNAME;
789 /* we need to report back size with NULL-terminator
790 * because client expects that */
791 repbody->eadatasize = rc + 1;
792 if (repbody->eadatasize != reqbody->eadatasize)
793 CERROR("Read shorter symlink %d, expected %d\n",
794 rc, reqbody->eadatasize - 1);
796 ((char *)ma->ma_lmm)[rc] = 0;
798 /* If the total CDEBUG() size is larger than a page, it
799 * will print a warning to the console, avoid this by
800 * printing just the last part of the symlink. */
801 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
802 print_limit < rc ? "..." : "", print_limit,
803 (char *)ma->ma_lmm + rc - print_limit, rc);
808 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
809 repbody->max_cookiesize = 0;
810 repbody->max_mdsize = info->mti_mdt->mdt_max_mdsize;
811 repbody->valid |= OBD_MD_FLMODEASIZE;
812 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
813 "MAX_COOKIE to : %d:%d\n", repbody->max_mdsize,
814 repbody->max_cookiesize);
817 if (exp_connect_rmtclient(info->mti_exp) &&
818 reqbody->valid & OBD_MD_FLRMTPERM) {
819 void *buf = req_capsule_server_get(pill, &RMF_ACL);
821 /* mdt_getattr_lock only */
822 rc = mdt_pack_remote_perm(info, o, buf);
824 repbody->valid &= ~OBD_MD_FLRMTPERM;
825 repbody->aclsize = 0;
828 repbody->valid |= OBD_MD_FLRMTPERM;
829 repbody->aclsize = sizeof(struct mdt_remote_perm);
832 #ifdef CONFIG_FS_POSIX_ACL
833 else if ((exp_connect_flags(req->rq_export) & OBD_CONNECT_ACL) &&
834 (reqbody->valid & OBD_MD_FLACL)) {
835 buffer->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
836 buffer->lb_len = req_capsule_get_size(pill,
837 &RMF_ACL, RCL_SERVER);
838 if (buffer->lb_len > 0) {
839 rc = mo_xattr_get(env, next, buffer,
840 XATTR_NAME_ACL_ACCESS);
842 if (rc == -ENODATA) {
843 repbody->aclsize = 0;
844 repbody->valid |= OBD_MD_FLACL;
846 } else if (rc == -EOPNOTSUPP) {
849 CERROR("got acl size: %d\n", rc);
852 repbody->aclsize = rc;
853 repbody->valid |= OBD_MD_FLACL;
860 if (reqbody->valid & OBD_MD_FLMDSCAPA &&
861 info->mti_mdt->mdt_opts.mo_mds_capa &&
862 exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
863 struct lustre_capa *capa;
865 capa = req_capsule_server_get(pill, &RMF_CAPA1);
867 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
868 rc = mo_capa_get(env, next, capa, 0);
871 repbody->valid |= OBD_MD_FLMDSCAPA;
876 mdt_counter_incr(req, LPROC_MDT_GETATTR);
881 static int mdt_renew_capa(struct mdt_thread_info *info)
883 struct mdt_object *obj = info->mti_object;
884 struct mdt_body *body;
885 struct lustre_capa *capa, *c;
889 /* if object doesn't exist, or server has disabled capability,
890 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
893 if (!obj || !info->mti_mdt->mdt_opts.mo_oss_capa ||
894 !(exp_connect_flags(info->mti_exp) & OBD_CONNECT_OSS_CAPA))
897 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
898 LASSERT(body != NULL);
900 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
903 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
907 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
909 body->valid |= OBD_MD_FLOSSCAPA;
913 int mdt_getattr(struct mdt_thread_info *info)
915 struct mdt_object *obj = info->mti_object;
916 struct req_capsule *pill = info->mti_pill;
917 struct mdt_body *reqbody;
918 struct mdt_body *repbody;
923 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
926 if (reqbody->valid & OBD_MD_FLOSSCAPA) {
927 rc = req_capsule_server_pack(pill);
929 RETURN(err_serious(rc));
930 rc = mdt_renew_capa(info);
931 GOTO(out_shrink, rc);
934 LASSERT(obj != NULL);
935 LASSERT(lu_object_assert_exists(&obj->mot_obj.mo_lu));
937 mode = lu_object_attr(&obj->mot_obj.mo_lu);
939 /* old clients may not report needed easize, use max value then */
940 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
941 reqbody->eadatasize == 0 ?
942 info->mti_mdt->mdt_max_mdsize :
943 reqbody->eadatasize);
945 rc = req_capsule_server_pack(pill);
946 if (unlikely(rc != 0))
947 RETURN(err_serious(rc));
949 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
950 LASSERT(repbody != NULL);
951 repbody->eadatasize = 0;
952 repbody->aclsize = 0;
954 if (reqbody->valid & OBD_MD_FLRMTPERM)
955 rc = mdt_init_ucred(info, reqbody);
957 rc = mdt_check_ucred(info);
959 GOTO(out_shrink, rc);
961 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
964 * Don't check capability at all, because rename might getattr for
965 * remote obj, and at that time no capability is available.
967 mdt_set_capainfo(info, 1, &reqbody->fid1, BYPASS_CAPA);
968 rc = mdt_getattr_internal(info, obj, 0);
969 if (reqbody->valid & OBD_MD_FLRMTPERM)
970 mdt_exit_ucred(info);
973 mdt_client_compatibility(info);
974 rc2 = mdt_fix_reply(info);
980 int mdt_is_subdir(struct mdt_thread_info *info)
982 struct mdt_object *o = info->mti_object;
983 struct req_capsule *pill = info->mti_pill;
984 const struct mdt_body *body = info->mti_body;
985 struct mdt_body *repbody;
991 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
994 * We save last checked parent fid to @repbody->fid1 for remote
997 LASSERT(fid_is_sane(&body->fid2));
998 LASSERT(mdt_object_exists(o) && !mdt_object_remote(o));
999 rc = mdo_is_subdir(info->mti_env, mdt_object_child(o),
1000 &body->fid2, &repbody->fid1);
1001 if (rc == 0 || rc == -EREMOTE)
1002 repbody->valid |= OBD_MD_FLID;
1007 int mdt_swap_layouts(struct mdt_thread_info *info)
1009 struct ptlrpc_request *req = mdt_info_req(info);
1010 struct obd_export *exp = req->rq_export;
1011 struct mdt_object *o1, *o2, *o;
1012 struct mdt_lock_handle *lh1, *lh2;
1013 struct mdc_swap_layouts *msl;
1017 /* client does not support layout lock, so layout swaping
1019 * FIXME: there is a problem for old clients which don't support
1020 * layout lock yet. If those clients have already opened the file
1021 * they won't be notified at all so that old layout may still be
1022 * used to do IO. This can be fixed after file release is landed by
1023 * doing exclusive open and taking full EX ibits lock. - Jinshan */
1024 if (!exp_connect_layout(exp))
1025 RETURN(-EOPNOTSUPP);
1027 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA1, RCL_CLIENT))
1028 mdt_set_capainfo(info, 0, &info->mti_body->fid1,
1029 req_capsule_client_get(info->mti_pill,
1032 if (req_capsule_get_size(info->mti_pill, &RMF_CAPA2, RCL_CLIENT))
1033 mdt_set_capainfo(info, 1, &info->mti_body->fid2,
1034 req_capsule_client_get(info->mti_pill,
1037 o1 = info->mti_object;
1038 o = o2 = mdt_object_find(info->mti_env, info->mti_mdt,
1039 &info->mti_body->fid2);
1041 GOTO(out, rc = PTR_ERR(o));
1043 if (mdt_object_remote(o) || !mdt_object_exists(o)) /* remote object */
1044 GOTO(put, rc = -ENOENT);
1046 rc = lu_fid_cmp(&info->mti_body->fid1, &info->mti_body->fid2);
1047 if (unlikely(rc == 0)) /* same file, you kidding me? no-op. */
1053 /* permission check. Make sure the calling process having permission
1054 * to write both files. */
1055 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1060 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1065 msl = req_capsule_client_get(info->mti_pill, &RMF_SWAP_LAYOUTS);
1066 LASSERT(msl != NULL);
1068 lh1 = &info->mti_lh[MDT_LH_NEW];
1069 mdt_lock_reg_init(lh1, LCK_EX);
1070 lh2 = &info->mti_lh[MDT_LH_OLD];
1071 mdt_lock_reg_init(lh2, LCK_EX);
1073 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT,
1078 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT,
1083 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
1084 mdt_object_child(o2), msl->msl_flags);
1087 mdt_object_unlock(info, o2, lh2, rc);
1089 mdt_object_unlock(info, o1, lh1, rc);
1091 mdt_object_put(info->mti_env, o);
1096 static int mdt_raw_lookup(struct mdt_thread_info *info,
1097 struct mdt_object *parent,
1098 const struct lu_name *lname,
1099 struct ldlm_reply *ldlm_rep)
1101 struct md_object *next = mdt_object_child(info->mti_object);
1102 const struct mdt_body *reqbody = info->mti_body;
1103 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1104 struct mdt_body *repbody;
1108 if (reqbody->valid != OBD_MD_FLID)
1111 LASSERT(!info->mti_cross_ref);
1113 /* Only got the fid of this obj by name */
1114 fid_zero(child_fid);
1115 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
1118 /* XXX is raw_lookup possible as intent operation? */
1121 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1124 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1126 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1129 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1130 repbody->fid1 = *child_fid;
1131 repbody->valid = OBD_MD_FLID;
1137 * UPDATE lock should be taken against parent, and be release before exit;
1138 * child_bits lock should be taken against child, and be returned back:
1139 * (1)normal request should release the child lock;
1140 * (2)intent request will grant the lock to client.
1142 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1143 struct mdt_lock_handle *lhc,
1145 struct ldlm_reply *ldlm_rep)
1147 struct ptlrpc_request *req = mdt_info_req(info);
1148 struct mdt_body *reqbody = NULL;
1149 struct mdt_object *parent = info->mti_object;
1150 struct mdt_object *child;
1151 struct md_object *next = mdt_object_child(parent);
1152 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1153 struct lu_name *lname = NULL;
1154 const char *name = NULL;
1156 struct mdt_lock_handle *lhp = NULL;
1157 struct ldlm_lock *lock;
1158 struct ldlm_res_id *res_id;
1165 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1166 LASSERT(ergo(is_resent,
1167 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1169 LASSERT(parent != NULL);
1170 name = req_capsule_client_get(info->mti_pill, &RMF_NAME);
1172 RETURN(err_serious(-EFAULT));
1174 namelen = req_capsule_get_size(info->mti_pill, &RMF_NAME,
1176 if (!info->mti_cross_ref) {
1178 * XXX: Check for "namelen == 0" is for getattr by fid
1179 * (OBD_CONNECT_ATTRFID), otherwise do not allow empty name,
1180 * that is the name must contain at least one character and
1181 * the terminating '\0'
1184 reqbody = req_capsule_client_get(info->mti_pill,
1186 if (unlikely(reqbody == NULL))
1187 RETURN(err_serious(-EFAULT));
1189 if (unlikely(!fid_is_sane(&reqbody->fid2)))
1190 RETURN(err_serious(-EINVAL));
1193 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1195 PFID(mdt_object_fid(parent)),
1196 PFID(&reqbody->fid2), ldlm_rep);
1198 lname = mdt_name(info->mti_env, (char *)name, namelen);
1199 CDEBUG(D_INODE, "getattr with lock for "DFID"/%s, "
1200 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1204 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1206 if (unlikely(!mdt_object_exists(parent))) {
1207 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1208 &parent->mot_obj.mo_lu,
1209 "Parent doesn't exist!\n");
1211 } else if (!info->mti_cross_ref) {
1212 LASSERTF(!mdt_object_remote(parent),
1213 "Parent "DFID" is on remote server\n",
1214 PFID(mdt_object_fid(parent)));
1217 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1225 if (info->mti_cross_ref) {
1226 /* Only getattr on the child. Parent is on another node. */
1227 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1229 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1230 "ldlm_rep=%p\n", PFID(mdt_object_fid(child)), ldlm_rep);
1233 /* Do not take lock for resent case. */
1234 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1235 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
1236 lhc->mlh_reg_lh.cookie);
1237 LASSERT(fid_res_name_eq(mdt_object_fid(child),
1238 &lock->l_resource->lr_name));
1239 LDLM_LOCK_PUT(lock);
1242 mdt_lock_handle_init(lhc);
1243 mdt_lock_reg_init(lhc, LCK_PR);
1246 * Object's name is on another MDS, no lookup lock is
1247 * needed here but update is.
1249 child_bits &= ~MDS_INODELOCK_LOOKUP;
1250 child_bits |= MDS_INODELOCK_PERM | MDS_INODELOCK_UPDATE;
1252 rc = mdt_object_lock(info, child, lhc, child_bits,
1256 /* Finally, we can get attr for child. */
1257 mdt_set_capainfo(info, 0, mdt_object_fid(child),
1259 rc = mdt_getattr_internal(info, child, 0);
1260 if (unlikely(rc != 0))
1261 mdt_object_unlock(info, child, lhc, 1);
1267 /* step 1: lock parent only if parent is a directory */
1268 if (S_ISDIR(lu_object_attr(&parent->mot_obj.mo_lu))) {
1269 lhp = &info->mti_lh[MDT_LH_PARENT];
1270 mdt_lock_pdo_init(lhp, LCK_PR, name, namelen);
1271 rc = mdt_object_lock(info, parent, lhp,
1272 MDS_INODELOCK_UPDATE,
1274 if (unlikely(rc != 0))
1278 /* step 2: lookup child's fid by name */
1279 fid_zero(child_fid);
1280 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
1285 mdt_set_disposition(info, ldlm_rep,
1287 GOTO(out_parent, rc);
1289 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1291 *child_fid = reqbody->fid2;
1292 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1296 *step 3: find the child object by fid & lock it.
1297 * regardless if it is local or remote.
1299 child = mdt_object_find(info->mti_env, info->mti_mdt, child_fid);
1301 if (unlikely(IS_ERR(child)))
1302 GOTO(out_parent, rc = PTR_ERR(child));
1304 /* Do not take lock for resent case. */
1305 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1306 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
1307 lhc->mlh_reg_lh.cookie);
1309 res_id = &lock->l_resource->lr_name;
1310 if (!fid_res_name_eq(mdt_object_fid(child),
1311 &lock->l_resource->lr_name)) {
1312 LASSERTF(fid_res_name_eq(mdt_object_fid(parent),
1313 &lock->l_resource->lr_name),
1314 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
1315 (unsigned long)res_id->name[0],
1316 (unsigned long)res_id->name[1],
1317 (unsigned long)res_id->name[2],
1318 PFID(mdt_object_fid(parent)));
1319 CWARN("Although resent, but still not get child lock"
1320 "parent:"DFID" child:"DFID"\n",
1321 PFID(mdt_object_fid(parent)),
1322 PFID(mdt_object_fid(child)));
1323 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
1324 LDLM_LOCK_PUT(lock);
1327 LDLM_LOCK_PUT(lock);
1330 bool try_layout = false;
1333 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout*2);
1334 mdt_lock_handle_init(lhc);
1335 mdt_lock_reg_init(lhc, LCK_PR);
1337 if (!mdt_object_exists(child)) {
1338 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1339 &child->mot_obj.mo_lu,
1340 "Object doesn't exist!\n");
1341 GOTO(out_child, rc = -ENOENT);
1344 if (!(child_bits & MDS_INODELOCK_UPDATE) &&
1345 mdt_object_exists(child) && !mdt_object_remote(child)) {
1346 struct md_attr *ma = &info->mti_attr;
1349 ma->ma_need = MA_INODE;
1350 rc = mdt_attr_get_complex(info, child, ma);
1351 if (unlikely(rc != 0))
1352 GOTO(out_child, rc);
1354 /* If the file has not been changed for some time, we
1355 * return not only a LOOKUP lock, but also an UPDATE
1356 * lock and this might save us RPC on later STAT. For
1357 * directories, it also let negative dentry starts
1358 * working for this dir. */
1359 if (ma->ma_valid & MA_INODE &&
1360 ma->ma_attr.la_valid & LA_CTIME &&
1361 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1362 ma->ma_attr.la_ctime < cfs_time_current_sec())
1363 child_bits |= MDS_INODELOCK_UPDATE;
1366 /* layout lock must be granted in a best-effort way
1367 * for IT operations */
1368 LASSERT(!(child_bits & MDS_INODELOCK_LAYOUT));
1369 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_GETATTR) &&
1370 exp_connect_layout(info->mti_exp) &&
1371 S_ISREG(lu_object_attr(&child->mot_obj.mo_lu)) &&
1373 /* try to grant layout lock for regular file. */
1379 child_bits |= MDS_INODELOCK_LAYOUT;
1380 /* try layout lock, it may fail to be granted due to
1381 * contention at LOOKUP or UPDATE */
1382 if (!mdt_object_lock_try(info, child, lhc, child_bits,
1384 child_bits &= ~MDS_INODELOCK_LAYOUT;
1385 LASSERT(child_bits != 0);
1386 rc = mdt_object_lock(info, child, lhc,
1387 child_bits, MDT_CROSS_LOCK);
1392 rc = mdt_object_lock(info, child, lhc, child_bits,
1395 if (unlikely(rc != 0))
1396 GOTO(out_child, rc);
1399 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1400 /* Get MA_SOM attributes if update lock is given. */
1402 lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_UPDATE &&
1403 S_ISREG(lu_object_attr(&mdt_object_child(child)->mo_lu)))
1406 /* finally, we can get attr for child. */
1407 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1408 rc = mdt_getattr_internal(info, child, ma_need);
1409 if (unlikely(rc != 0)) {
1410 mdt_object_unlock(info, child, lhc, 1);
1412 /* Debugging code. */
1413 res_id = &lock->l_resource->lr_name;
1414 LDLM_DEBUG(lock, "Returning lock to client");
1415 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1416 &lock->l_resource->lr_name),
1417 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
1418 (unsigned long)res_id->name[0],
1419 (unsigned long)res_id->name[1],
1420 (unsigned long)res_id->name[2],
1421 PFID(mdt_object_fid(child)));
1422 if (mdt_object_exists(child) && !mdt_object_remote(child))
1423 mdt_pack_size2body(info, child);
1426 LDLM_LOCK_PUT(lock);
1430 mdt_object_put(info->mti_env, child);
1433 mdt_object_unlock(info, parent, lhp, 1);
1437 /* normal handler: should release the child lock */
1438 int mdt_getattr_name(struct mdt_thread_info *info)
1440 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1441 struct mdt_body *reqbody;
1442 struct mdt_body *repbody;
1446 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1447 LASSERT(reqbody != NULL);
1448 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1449 LASSERT(repbody != NULL);
1451 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1452 repbody->eadatasize = 0;
1453 repbody->aclsize = 0;
1455 rc = mdt_init_ucred(info, reqbody);
1457 GOTO(out_shrink, rc);
1459 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1460 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1461 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1462 lhc->mlh_reg_lh.cookie = 0;
1464 mdt_exit_ucred(info);
1467 mdt_client_compatibility(info);
1468 rc2 = mdt_fix_reply(info);
1474 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1475 void *karg, void *uarg);
1477 int mdt_set_info(struct mdt_thread_info *info)
1479 struct ptlrpc_request *req = mdt_info_req(info);
1482 int keylen, vallen, rc = 0;
1485 rc = req_capsule_server_pack(info->mti_pill);
1489 key = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_KEY);
1491 DEBUG_REQ(D_HA, req, "no set_info key");
1495 keylen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_KEY,
1498 val = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_VAL);
1500 DEBUG_REQ(D_HA, req, "no set_info val");
1504 vallen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_VAL,
1507 /* Swab any part of val you need to here */
1508 if (KEY_IS(KEY_READ_ONLY)) {
1510 lustre_msg_set_status(req->rq_repmsg, 0);
1512 spin_lock(&req->rq_export->exp_lock);
1514 *exp_connect_flags_ptr(req->rq_export) |=
1517 *exp_connect_flags_ptr(req->rq_export) &=
1518 ~OBD_CONNECT_RDONLY;
1519 spin_unlock(&req->rq_export->exp_lock);
1521 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1522 struct changelog_setinfo *cs =
1523 (struct changelog_setinfo *)val;
1524 if (vallen != sizeof(*cs)) {
1525 CERROR("Bad changelog_clear setinfo size %d\n", vallen);
1528 if (ptlrpc_req_need_swab(req)) {
1529 __swab64s(&cs->cs_recno);
1530 __swab32s(&cs->cs_id);
1533 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, info->mti_exp,
1535 lustre_msg_set_status(req->rq_repmsg, rc);
1544 * Top-level handler for MDT connection requests.
1546 int mdt_connect(struct mdt_thread_info *info)
1549 struct obd_connect_data *reply;
1550 struct obd_export *exp;
1551 struct ptlrpc_request *req = mdt_info_req(info);
1553 rc = target_handle_connect(req);
1555 return err_serious(rc);
1557 LASSERT(req->rq_export != NULL);
1558 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
1559 rc = mdt_init_sec_level(info);
1561 obd_disconnect(class_export_get(req->rq_export));
1565 /* To avoid exposing partially initialized connection flags, changes up
1566 * to this point have been staged in reply->ocd_connect_flags. Now that
1567 * connection handling has completed successfully, atomically update
1568 * the connect flags in the shared export data structure. LU-1623 */
1569 reply = req_capsule_server_get(info->mti_pill, &RMF_CONNECT_DATA);
1570 exp = req->rq_export;
1571 spin_lock(&exp->exp_lock);
1572 *exp_connect_flags_ptr(exp) = reply->ocd_connect_flags;
1573 spin_unlock(&exp->exp_lock);
1575 rc = mdt_init_idmap(info);
1577 obd_disconnect(class_export_get(req->rq_export));
1582 int mdt_disconnect(struct mdt_thread_info *info)
1587 rc = target_handle_disconnect(mdt_info_req(info));
1589 rc = err_serious(rc);
1593 static int mdt_sendpage(struct mdt_thread_info *info,
1594 struct lu_rdpg *rdpg, int nob)
1596 struct ptlrpc_request *req = mdt_info_req(info);
1597 struct obd_export *exp = req->rq_export;
1598 struct ptlrpc_bulk_desc *desc;
1599 struct l_wait_info *lwi = &info->mti_u.rdpg.mti_wait_info;
1606 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, 1, BULK_PUT_SOURCE,
1611 if (!(exp_connect_flags(exp) & OBD_CONNECT_BRW_SIZE))
1612 /* old client requires reply size in it's PAGE_SIZE,
1613 * which is rdpg->rp_count */
1614 nob = rdpg->rp_count;
1616 for (i = 0, tmpcount = nob; i < rdpg->rp_npages && tmpcount > 0;
1617 i++, tmpcount -= tmpsize) {
1618 tmpsize = min_t(int, tmpcount, CFS_PAGE_SIZE);
1619 ptlrpc_prep_bulk_page_pin(desc, rdpg->rp_pages[i], 0, tmpsize);
1622 LASSERT(desc->bd_nob == nob);
1623 rc = target_bulk_io(exp, desc, lwi);
1624 ptlrpc_free_bulk_pin(desc);
1628 int mdt_readpage(struct mdt_thread_info *info)
1630 struct mdt_object *object = info->mti_object;
1631 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1632 struct mdt_body *reqbody;
1633 struct mdt_body *repbody;
1638 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1639 RETURN(err_serious(-ENOMEM));
1641 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1642 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1643 if (reqbody == NULL || repbody == NULL)
1644 RETURN(err_serious(-EFAULT));
1647 * prepare @rdpg before calling lower layers and transfer itself. Here
1648 * reqbody->size contains offset of where to start to read and
1649 * reqbody->nlink contains number bytes to read.
1651 rdpg->rp_hash = reqbody->size;
1652 if (rdpg->rp_hash != reqbody->size) {
1653 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1654 rdpg->rp_hash, reqbody->size);
1658 rdpg->rp_attrs = reqbody->mode;
1659 if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_64BITHASH)
1660 rdpg->rp_attrs |= LUDA_64BITHASH;
1661 rdpg->rp_count = min_t(unsigned int, reqbody->nlink,
1662 exp_max_brw_size(info->mti_exp));
1663 rdpg->rp_npages = (rdpg->rp_count + CFS_PAGE_SIZE - 1) >>
1665 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1666 if (rdpg->rp_pages == NULL)
1669 for (i = 0; i < rdpg->rp_npages; ++i) {
1670 rdpg->rp_pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
1671 if (rdpg->rp_pages[i] == NULL)
1672 GOTO(free_rdpg, rc = -ENOMEM);
1675 /* call lower layers to fill allocated pages with directory data */
1676 rc = mo_readpage(info->mti_env, mdt_object_child(object), rdpg);
1678 GOTO(free_rdpg, rc);
1680 /* send pages to client */
1681 rc = mdt_sendpage(info, rdpg, rc);
1686 for (i = 0; i < rdpg->rp_npages; i++)
1687 if (rdpg->rp_pages[i] != NULL)
1688 cfs_free_page(rdpg->rp_pages[i]);
1689 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1691 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1697 static int mdt_reint_internal(struct mdt_thread_info *info,
1698 struct mdt_lock_handle *lhc,
1701 struct req_capsule *pill = info->mti_pill;
1702 struct mdt_body *repbody;
1707 rc = mdt_reint_unpack(info, op);
1709 CERROR("Can't unpack reint, rc %d\n", rc);
1710 RETURN(err_serious(rc));
1713 /* for replay (no_create) lmm is not needed, client has it already */
1714 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1715 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1716 info->mti_rr.rr_eadatalen);
1718 /* llog cookies are always 0, the field is kept for compatibility */
1719 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1720 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
1722 rc = req_capsule_server_pack(pill);
1724 CERROR("Can't pack response, rc %d\n", rc);
1725 RETURN(err_serious(rc));
1728 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1729 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1731 repbody->eadatasize = 0;
1732 repbody->aclsize = 0;
1735 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1737 /* for replay no cookkie / lmm need, because client have this already */
1738 if (info->mti_spec.no_create)
1739 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1740 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1742 rc = mdt_init_ucred_reint(info);
1744 GOTO(out_shrink, rc);
1746 rc = mdt_fix_attr_ucred(info, op);
1748 GOTO(out_ucred, rc = err_serious(rc));
1750 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1751 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1752 GOTO(out_ucred, rc);
1754 rc = mdt_reint_rec(info, lhc);
1757 mdt_exit_ucred(info);
1759 mdt_client_compatibility(info);
1760 rc2 = mdt_fix_reply(info);
1766 static long mdt_reint_opcode(struct mdt_thread_info *info,
1767 const struct req_format **fmt)
1769 struct mdt_rec_reint *rec;
1772 rec = req_capsule_client_get(info->mti_pill, &RMF_REC_REINT);
1774 opc = rec->rr_opcode;
1775 DEBUG_REQ(D_INODE, mdt_info_req(info), "reint opt = %ld", opc);
1776 if (opc < REINT_MAX && fmt[opc] != NULL)
1777 req_capsule_extend(info->mti_pill, fmt[opc]);
1779 CERROR("%s: Unsupported opcode '%ld' from client '%s': "
1780 "rc = %d\n", mdt_obd_name(info->mti_mdt), opc,
1781 info->mti_mdt->mdt_ldlm_client->cli_name,
1783 opc = err_serious(-EFAULT);
1786 opc = err_serious(-EFAULT);
1791 int mdt_reint(struct mdt_thread_info *info)
1796 static const struct req_format *reint_fmts[REINT_MAX] = {
1797 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1798 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1799 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1800 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1801 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1802 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1803 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR,
1804 [REINT_RMENTRY] = &RQF_MDS_REINT_UNLINK
1809 opc = mdt_reint_opcode(info, reint_fmts);
1812 * No lock possible here from client to pass it to reint code
1815 rc = mdt_reint_internal(info, NULL, opc);
1820 info->mti_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1824 /* this should sync the whole device */
1825 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1827 struct dt_device *dt = mdt->mdt_bottom;
1831 rc = dt->dd_ops->dt_sync(env, dt);
1835 /* this should sync this object */
1836 static int mdt_object_sync(struct mdt_thread_info *info)
1838 struct md_object *next;
1842 if (!mdt_object_exists(info->mti_object)) {
1843 CWARN("Non existing object "DFID"!\n",
1844 PFID(mdt_object_fid(info->mti_object)));
1847 next = mdt_object_child(info->mti_object);
1848 rc = mo_object_sync(info->mti_env, next);
1853 int mdt_sync(struct mdt_thread_info *info)
1855 struct ptlrpc_request *req = mdt_info_req(info);
1856 struct req_capsule *pill = info->mti_pill;
1857 struct mdt_body *body;
1861 /* The fid may be zero, so we req_capsule_set manually */
1862 req_capsule_set(pill, &RQF_MDS_SYNC);
1864 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
1866 RETURN(err_serious(-EINVAL));
1868 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1869 RETURN(err_serious(-ENOMEM));
1871 if (fid_seq(&body->fid1) == 0) {
1872 /* sync the whole device */
1873 rc = req_capsule_server_pack(pill);
1875 rc = mdt_device_sync(info->mti_env, info->mti_mdt);
1877 rc = err_serious(rc);
1879 /* sync an object */
1880 rc = mdt_unpack_req_pack_rep(info, HABEO_CORPUS|HABEO_REFERO);
1882 rc = mdt_object_sync(info);
1884 const struct lu_fid *fid;
1885 struct lu_attr *la = &info->mti_attr.ma_attr;
1887 info->mti_attr.ma_need = MA_INODE;
1888 info->mti_attr.ma_valid = 0;
1889 rc = mdt_attr_get_complex(info, info->mti_object,
1892 body = req_capsule_server_get(pill,
1894 fid = mdt_object_fid(info->mti_object);
1895 mdt_pack_attr2body(info, body, la, fid);
1899 rc = err_serious(rc);
1902 mdt_counter_incr(req, LPROC_MDT_SYNC);
1908 * Quotacheck handler.
1909 * in-kernel quotacheck isn't supported any more.
1911 int mdt_quotacheck(struct mdt_thread_info *info)
1913 struct obd_quotactl *oqctl;
1917 oqctl = req_capsule_client_get(info->mti_pill, &RMF_OBD_QUOTACTL);
1919 RETURN(err_serious(-EPROTO));
1921 rc = req_capsule_server_pack(info->mti_pill);
1923 RETURN(err_serious(rc));
1925 /* deprecated, not used any more */
1926 RETURN(-EOPNOTSUPP);
1930 * Handle quota control requests to consult current usage/limit, but also
1931 * to configure quota enforcement
1933 int mdt_quotactl(struct mdt_thread_info *info)
1935 struct obd_export *exp = info->mti_exp;
1936 struct req_capsule *pill = info->mti_pill;
1937 struct obd_quotactl *oqctl, *repoqc;
1939 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
1942 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1944 RETURN(err_serious(-EPROTO));
1946 rc = req_capsule_server_pack(pill);
1948 RETURN(err_serious(rc));
1950 switch (oqctl->qc_cmd) {
1952 case LUSTRE_Q_INVALIDATE:
1953 case LUSTRE_Q_FINVALIDATE:
1957 /* deprecated, not used any more */
1958 RETURN(-EOPNOTSUPP);
1959 /* master quotactl */
1965 RETURN(-EOPNOTSUPP);
1966 /* slave quotactl */
1971 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
1975 /* map uid/gid for remote client */
1977 if (exp_connect_rmtclient(exp)) {
1978 struct lustre_idmap_table *idmap;
1980 idmap = mdt_req2med(mdt_info_req(info))->med_idmap;
1982 if (unlikely(oqctl->qc_cmd != Q_GETQUOTA &&
1983 oqctl->qc_cmd != Q_GETINFO))
1986 if (oqctl->qc_type == USRQUOTA)
1987 id = lustre_idmap_lookup_uid(NULL, idmap, 0,
1989 else if (oqctl->qc_type == GRPQUOTA)
1990 id = lustre_idmap_lookup_gid(NULL, idmap, 0,
1995 if (id == CFS_IDMAP_NOTFOUND) {
1996 CDEBUG(D_QUOTA, "no mapping for id %u\n", oqctl->qc_id);
2001 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
2003 RETURN(err_serious(-EFAULT));
2005 if (oqctl->qc_id != id)
2006 swap(oqctl->qc_id, id);
2008 switch (oqctl->qc_cmd) {
2014 /* forward quotactl request to QMT */
2015 rc = qmt_hdls.qmth_quotactl(info->mti_env, qmt, oqctl);
2020 /* slave quotactl */
2021 rc = lquotactl_slv(info->mti_env, info->mti_mdt->mdt_bottom,
2026 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2030 if (oqctl->qc_id != id)
2031 swap(oqctl->qc_id, id);
2038 * OBD PING and other handlers.
2040 int mdt_obd_ping(struct mdt_thread_info *info)
2045 req_capsule_set(info->mti_pill, &RQF_OBD_PING);
2047 rc = target_handle_ping(mdt_info_req(info));
2049 rc = err_serious(rc);
2054 * OBD_IDX_READ handler
2056 int mdt_obd_idx_read(struct mdt_thread_info *info)
2058 struct mdt_device *mdt = info->mti_mdt;
2059 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
2060 struct idx_info *req_ii, *rep_ii;
2064 memset(rdpg, 0, sizeof(*rdpg));
2065 req_capsule_set(info->mti_pill, &RQF_OBD_IDX_READ);
2067 /* extract idx_info buffer from request & reply */
2068 req_ii = req_capsule_client_get(info->mti_pill, &RMF_IDX_INFO);
2069 if (req_ii == NULL || req_ii->ii_magic != IDX_INFO_MAGIC)
2070 RETURN(err_serious(-EPROTO));
2072 rc = req_capsule_server_pack(info->mti_pill);
2074 RETURN(err_serious(rc));
2076 rep_ii = req_capsule_server_get(info->mti_pill, &RMF_IDX_INFO);
2078 RETURN(err_serious(-EFAULT));
2079 rep_ii->ii_magic = IDX_INFO_MAGIC;
2081 /* extract hash to start with */
2082 rdpg->rp_hash = req_ii->ii_hash_start;
2084 /* extract requested attributes */
2085 rdpg->rp_attrs = req_ii->ii_attrs;
2087 /* check that fid packed in request is valid and supported */
2088 if (!fid_is_sane(&req_ii->ii_fid))
2090 rep_ii->ii_fid = req_ii->ii_fid;
2093 rep_ii->ii_flags = req_ii->ii_flags;
2095 /* compute number of pages to allocate, ii_count is the number of 4KB
2097 if (req_ii->ii_count <= 0)
2098 GOTO(out, rc = -EFAULT);
2099 rdpg->rp_count = min_t(unsigned int, req_ii->ii_count << LU_PAGE_SHIFT,
2100 exp_max_brw_size(info->mti_exp));
2101 rdpg->rp_npages = (rdpg->rp_count + CFS_PAGE_SIZE -1) >> CFS_PAGE_SHIFT;
2103 /* allocate pages to store the containers */
2104 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
2105 if (rdpg->rp_pages == NULL)
2106 GOTO(out, rc = -ENOMEM);
2107 for (i = 0; i < rdpg->rp_npages; i++) {
2108 rdpg->rp_pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
2109 if (rdpg->rp_pages[i] == NULL)
2110 GOTO(out, rc = -ENOMEM);
2113 /* populate pages with key/record pairs */
2114 rc = dt_index_read(info->mti_env, mdt->mdt_bottom, rep_ii, rdpg);
2118 LASSERTF(rc <= rdpg->rp_count, "dt_index_read() returned more than "
2119 "asked %d > %d\n", rc, rdpg->rp_count);
2121 /* send pages to client */
2122 rc = mdt_sendpage(info, rdpg, rc);
2126 if (rdpg->rp_pages) {
2127 for (i = 0; i < rdpg->rp_npages; i++)
2128 if (rdpg->rp_pages[i])
2129 cfs_free_page(rdpg->rp_pages[i]);
2130 OBD_FREE(rdpg->rp_pages,
2131 rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
2136 int mdt_obd_log_cancel(struct mdt_thread_info *info)
2138 return err_serious(-EOPNOTSUPP);
2141 int mdt_obd_qc_callback(struct mdt_thread_info *info)
2143 return err_serious(-EOPNOTSUPP);
2150 /** clone llog ctxt from child (mdd)
2151 * This allows remote llog (replicator) access.
2152 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2153 * context was originally set up, or we can handle them directly.
2154 * I choose the latter, but that means I need any llog
2155 * contexts set up by child to be accessable by the mdt. So we clone the
2156 * context into our context list here.
2158 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2161 struct md_device *next = mdt->mdt_child;
2162 struct llog_ctxt *ctxt;
2165 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2168 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2169 if (rc || ctxt == NULL) {
2173 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2175 CERROR("Can't set mdt ctxt %d\n", rc);
2180 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2181 struct mdt_device *mdt, int idx)
2183 struct llog_ctxt *ctxt;
2185 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2188 /* Put once for the get we just did, and once for the clone */
2189 llog_ctxt_put(ctxt);
2190 llog_ctxt_put(ctxt);
2194 int mdt_llog_create(struct mdt_thread_info *info)
2198 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_CREATE);
2199 rc = llog_origin_handle_open(mdt_info_req(info));
2200 return (rc < 0 ? err_serious(rc) : rc);
2203 int mdt_llog_destroy(struct mdt_thread_info *info)
2207 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_DESTROY);
2208 rc = llog_origin_handle_destroy(mdt_info_req(info));
2209 return (rc < 0 ? err_serious(rc) : rc);
2212 int mdt_llog_read_header(struct mdt_thread_info *info)
2216 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
2217 rc = llog_origin_handle_read_header(mdt_info_req(info));
2218 return (rc < 0 ? err_serious(rc) : rc);
2221 int mdt_llog_next_block(struct mdt_thread_info *info)
2225 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
2226 rc = llog_origin_handle_next_block(mdt_info_req(info));
2227 return (rc < 0 ? err_serious(rc) : rc);
2230 int mdt_llog_prev_block(struct mdt_thread_info *info)
2234 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
2235 rc = llog_origin_handle_prev_block(mdt_info_req(info));
2236 return (rc < 0 ? err_serious(rc) : rc);
2244 static struct ldlm_callback_suite cbs = {
2245 .lcs_completion = ldlm_server_completion_ast,
2246 .lcs_blocking = ldlm_server_blocking_ast,
2247 .lcs_glimpse = ldlm_server_glimpse_ast
2250 int mdt_enqueue(struct mdt_thread_info *info)
2252 struct ptlrpc_request *req;
2256 * info->mti_dlm_req already contains swapped and (if necessary)
2257 * converted dlm request.
2259 LASSERT(info->mti_dlm_req != NULL);
2261 req = mdt_info_req(info);
2262 rc = ldlm_handle_enqueue0(info->mti_mdt->mdt_namespace,
2263 req, info->mti_dlm_req, &cbs);
2264 info->mti_fail_id = OBD_FAIL_LDLM_REPLY;
2265 return rc ? err_serious(rc) : req->rq_status;
2268 int mdt_convert(struct mdt_thread_info *info)
2271 struct ptlrpc_request *req;
2273 LASSERT(info->mti_dlm_req);
2274 req = mdt_info_req(info);
2275 rc = ldlm_handle_convert0(req, info->mti_dlm_req);
2276 return rc ? err_serious(rc) : req->rq_status;
2279 int mdt_bl_callback(struct mdt_thread_info *info)
2281 CERROR("bl callbacks should not happen on MDS\n");
2283 return err_serious(-EOPNOTSUPP);
2286 int mdt_cp_callback(struct mdt_thread_info *info)
2288 CERROR("cp callbacks should not happen on MDS\n");
2290 return err_serious(-EOPNOTSUPP);
2294 * sec context handlers
2296 int mdt_sec_ctx_handle(struct mdt_thread_info *info)
2300 rc = mdt_handle_idmap(info);
2303 struct ptlrpc_request *req = mdt_info_req(info);
2306 opc = lustre_msg_get_opc(req->rq_reqmsg);
2307 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
2308 sptlrpc_svc_ctx_invalidate(req);
2311 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2317 * quota request handlers
2319 int mdt_quota_dqacq(struct mdt_thread_info *info)
2321 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
2326 RETURN(err_serious(-EOPNOTSUPP));
2328 rc = qmt_hdls.qmth_dqacq(info->mti_env, qmt, mdt_info_req(info));
2332 static struct mdt_object *mdt_obj(struct lu_object *o)
2334 LASSERT(lu_device_is_mdt(o->lo_dev));
2335 return container_of0(o, struct mdt_object, mot_obj.mo_lu);
2338 struct mdt_object *mdt_object_new(const struct lu_env *env,
2339 struct mdt_device *d,
2340 const struct lu_fid *f)
2342 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2343 struct lu_object *o;
2344 struct mdt_object *m;
2347 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2348 o = lu_object_find(env, &d->mdt_md_dev.md_lu_dev, f, &conf);
2349 if (unlikely(IS_ERR(o)))
2350 m = (struct mdt_object *)o;
2356 struct mdt_object *mdt_object_find(const struct lu_env *env,
2357 struct mdt_device *d,
2358 const struct lu_fid *f)
2360 struct lu_object *o;
2361 struct mdt_object *m;
2364 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2365 o = lu_object_find(env, &d->mdt_md_dev.md_lu_dev, f, NULL);
2366 if (unlikely(IS_ERR(o)))
2367 m = (struct mdt_object *)o;
2374 * Asyncronous commit for mdt device.
2376 * Pass asynchonous commit call down the MDS stack.
2378 * \param env environment
2379 * \param mdt the mdt device
2381 static void mdt_device_commit_async(const struct lu_env *env,
2382 struct mdt_device *mdt)
2384 struct dt_device *dt = mdt->mdt_bottom;
2387 rc = dt->dd_ops->dt_commit_async(env, dt);
2388 if (unlikely(rc != 0))
2389 CWARN("async commit start failed with rc = %d", rc);
2393 * Mark the lock as "synchonous".
2395 * Mark the lock to deffer transaction commit to the unlock time.
2397 * \param lock the lock to mark as "synchonous"
2399 * \see mdt_is_lock_sync
2400 * \see mdt_save_lock
2402 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2404 lock->l_ast_data = (void*)1;
2408 * Check whehter the lock "synchonous" or not.
2410 * \param lock the lock to check
2411 * \retval 1 the lock is "synchonous"
2412 * \retval 0 the lock isn't "synchronous"
2414 * \see mdt_set_lock_sync
2415 * \see mdt_save_lock
2417 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2419 return lock->l_ast_data != NULL;
2423 * Blocking AST for mdt locks.
2425 * Starts transaction commit if in case of COS lock conflict or
2426 * deffers such a commit to the mdt_save_lock.
2428 * \param lock the lock which blocks a request or cancelling lock
2429 * \param desc unused
2430 * \param data unused
2431 * \param flag indicates whether this cancelling or blocking callback
2433 * \see ldlm_blocking_ast_nocheck
2435 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2436 void *data, int flag)
2438 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2439 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2443 if (flag == LDLM_CB_CANCELING)
2445 lock_res_and_lock(lock);
2446 if (lock->l_blocking_ast != mdt_blocking_ast) {
2447 unlock_res_and_lock(lock);
2450 if (mdt_cos_is_enabled(mdt) &&
2451 lock->l_req_mode & (LCK_PW | LCK_EX) &&
2452 lock->l_blocking_lock != NULL &&
2453 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
2454 mdt_set_lock_sync(lock);
2456 rc = ldlm_blocking_ast_nocheck(lock);
2458 /* There is no lock conflict if l_blocking_lock == NULL,
2459 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2460 * when the last reference to a local lock was released */
2461 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2464 rc = lu_env_init(&env, LCT_LOCAL);
2465 if (unlikely(rc != 0))
2466 CWARN("lu_env initialization failed with rc = %d,"
2467 "cannot start asynchronous commit\n", rc);
2469 mdt_device_commit_async(&env, mdt);
2475 int mdt_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2476 void *data, int flag)
2478 struct lustre_handle lockh;
2482 case LDLM_CB_BLOCKING:
2483 ldlm_lock2handle(lock, &lockh);
2484 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
2486 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2490 case LDLM_CB_CANCELING:
2491 LDLM_DEBUG(lock, "Revoke remote lock\n");
2499 int mdt_remote_object_lock(struct mdt_thread_info *mti,
2500 struct mdt_object *o, struct lustre_handle *lh,
2501 ldlm_mode_t mode, __u64 ibits)
2503 struct ldlm_enqueue_info *einfo = &mti->mti_einfo;
2504 ldlm_policy_data_t *policy = &mti->mti_policy;
2508 LASSERT(mdt_object_remote(o));
2510 LASSERT((ibits & MDS_INODELOCK_UPDATE));
2512 memset(einfo, 0, sizeof(*einfo));
2513 einfo->ei_type = LDLM_IBITS;
2514 einfo->ei_mode = mode;
2515 einfo->ei_cb_bl = mdt_md_blocking_ast;
2516 einfo->ei_cb_cp = ldlm_completion_ast;
2518 memset(policy, 0, sizeof(*policy));
2519 policy->l_inodebits.bits = ibits;
2521 rc = mo_object_lock(mti->mti_env, mdt_object_child(o), lh, einfo,
2526 static int mdt_object_lock0(struct mdt_thread_info *info, struct mdt_object *o,
2527 struct mdt_lock_handle *lh, __u64 ibits,
2528 bool nonblock, int locality)
2530 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2531 ldlm_policy_data_t *policy = &info->mti_policy;
2532 struct ldlm_res_id *res_id = &info->mti_res_id;
2537 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2538 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2539 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2540 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2542 if (mdt_object_remote(o)) {
2543 if (locality == MDT_CROSS_LOCK) {
2544 ibits &= ~(MDS_INODELOCK_UPDATE | MDS_INODELOCK_PERM);
2545 ibits |= MDS_INODELOCK_LOOKUP;
2548 (MDS_INODELOCK_UPDATE | MDS_INODELOCK_PERM)),
2549 "%s: wrong bit "LPX64" for remote obj "DFID"\n",
2550 mdt_obd_name(info->mti_mdt), ibits,
2551 PFID(mdt_object_fid(o)));
2552 LASSERT(ibits & MDS_INODELOCK_LOOKUP);
2554 /* No PDO lock on remote object */
2555 LASSERT(lh->mlh_type != MDT_PDO_LOCK);
2558 if (lh->mlh_type == MDT_PDO_LOCK) {
2559 /* check for exists after object is locked */
2560 if (mdt_object_exists(o) == 0) {
2561 /* Non-existent object shouldn't have PDO lock */
2564 /* Non-dir object shouldn't have PDO lock */
2565 if (!S_ISDIR(lu_object_attr(&o->mot_obj.mo_lu)))
2570 memset(policy, 0, sizeof(*policy));
2571 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2573 dlmflags = LDLM_FL_ATOMIC_CB;
2575 dlmflags |= LDLM_FL_BLOCK_NOWAIT;
2578 * Take PDO lock on whole directory and build correct @res_id for lock
2579 * on part of directory.
2581 if (lh->mlh_pdo_hash != 0) {
2582 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2583 mdt_lock_pdo_mode(info, o, lh);
2584 if (lh->mlh_pdo_mode != LCK_NL) {
2586 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2587 * is never going to be sent to client and we do not
2588 * want it slowed down due to possible cancels.
2590 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2591 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2592 policy, res_id, dlmflags,
2593 &info->mti_exp->exp_handle.h_cookie);
2599 * Finish res_id initializing by name hash marking part of
2600 * directory which is taking modification.
2602 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2605 policy->l_inodebits.bits = ibits;
2608 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2609 * going to be sent to client. If it is - mdt_intent_policy() path will
2610 * fix it up and turn FL_LOCAL flag off.
2612 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2613 res_id, LDLM_FL_LOCAL_ONLY | dlmflags,
2614 &info->mti_exp->exp_handle.h_cookie);
2616 mdt_object_unlock(info, o, lh, 1);
2617 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2618 lh->mlh_pdo_hash != 0 &&
2619 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX)) {
2620 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2626 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2627 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2629 return mdt_object_lock0(info, o, lh, ibits, false, locality);
2632 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *o,
2633 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2635 struct mdt_lock_handle tmp = *lh;
2638 rc = mdt_object_lock0(info, o, &tmp, ibits, true, locality);
2646 * Save a lock within request object.
2648 * Keep the lock referenced until whether client ACK or transaction
2649 * commit happens or release the lock immediately depending on input
2650 * parameters. If COS is ON, a write lock is converted to COS lock
2653 * \param info thead info object
2654 * \param h lock handle
2655 * \param mode lock mode
2656 * \param decref force immediate lock releasing
2659 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2660 ldlm_mode_t mode, int decref)
2664 if (lustre_handle_is_used(h)) {
2665 if (decref || !info->mti_has_trans ||
2666 !(mode & (LCK_PW | LCK_EX))){
2667 mdt_fid_unlock(h, mode);
2669 struct mdt_device *mdt = info->mti_mdt;
2670 struct ldlm_lock *lock = ldlm_handle2lock(h);
2671 struct ptlrpc_request *req = mdt_info_req(info);
2674 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2676 CDEBUG(D_HA, "request = %p reply state = %p"
2677 " transno = "LPD64"\n",
2678 req, req->rq_reply_state, req->rq_transno);
2679 if (mdt_cos_is_enabled(mdt)) {
2681 ldlm_lock_downgrade(lock, LCK_COS);
2684 ptlrpc_save_lock(req, h, mode, no_ack);
2685 if (mdt_is_lock_sync(lock)) {
2686 CDEBUG(D_HA, "found sync-lock,"
2687 " async commit started\n");
2688 mdt_device_commit_async(info->mti_env,
2691 LDLM_LOCK_PUT(lock);
2700 * Unlock mdt object.
2702 * Immeditely release the regular lock and the PDO lock or save the
2703 * lock in reqeuest and keep them referenced until client ACK or
2704 * transaction commit.
2706 * \param info thread info object
2707 * \param o mdt object
2708 * \param lh mdt lock handle referencing regular and PDO locks
2709 * \param decref force immediate lock releasing
2711 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2712 struct mdt_lock_handle *lh, int decref)
2716 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2717 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2719 if (lustre_handle_is_used(&lh->mlh_rreg_lh))
2720 ldlm_lock_decref(&lh->mlh_rreg_lh, lh->mlh_rreg_mode);
2725 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2726 const struct lu_fid *f,
2727 struct mdt_lock_handle *lh,
2730 struct mdt_object *o;
2732 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2736 rc = mdt_object_lock(info, o, lh, ibits,
2739 mdt_object_put(info->mti_env, o);
2746 void mdt_object_unlock_put(struct mdt_thread_info * info,
2747 struct mdt_object * o,
2748 struct mdt_lock_handle *lh,
2751 mdt_object_unlock(info, o, lh, decref);
2752 mdt_object_put(info->mti_env, o);
2755 struct mdt_handler *mdt_handler_find(__u32 opc, struct mdt_opc_slice *supported)
2757 struct mdt_opc_slice *s;
2758 struct mdt_handler *h;
2761 for (s = supported; s->mos_hs != NULL; s++) {
2762 if (s->mos_opc_start <= opc && opc < s->mos_opc_end) {
2763 h = s->mos_hs + (opc - s->mos_opc_start);
2764 if (likely(h->mh_opc != 0))
2765 LASSERTF(h->mh_opc == opc,
2766 "opcode mismatch %d != %d\n",
2769 h = NULL; /* unsupported opc */
2776 static int mdt_lock_resname_compat(struct mdt_device *m,
2777 struct ldlm_request *req)
2779 /* XXX something... later. */
2783 static int mdt_lock_reply_compat(struct mdt_device *m, struct ldlm_reply *rep)
2785 /* XXX something... later. */
2790 * Generic code handling requests that have struct mdt_body passed in:
2792 * - extract mdt_body from request and save it in @info, if present;
2794 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2797 * - if HABEO_CORPUS flag is set for this request type check whether object
2798 * actually exists on storage (lu_object_exists()).
2801 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2803 const struct mdt_body *body;
2804 struct mdt_object *obj;
2805 const struct lu_env *env;
2806 struct req_capsule *pill;
2810 env = info->mti_env;
2811 pill = info->mti_pill;
2813 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2817 if (!(body->valid & OBD_MD_FLID))
2820 if (!fid_is_sane(&body->fid1)) {
2821 CERROR("Invalid fid: "DFID"\n", PFID(&body->fid1));
2826 * Do not get size or any capa fields before we check that request
2827 * contains capa actually. There are some requests which do not, for
2828 * instance MDS_IS_SUBDIR.
2830 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2831 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2832 mdt_set_capainfo(info, 0, &body->fid1,
2833 req_capsule_client_get(pill, &RMF_CAPA1));
2835 obj = mdt_object_find(env, info->mti_mdt, &body->fid1);
2837 if ((flags & HABEO_CORPUS) &&
2838 !mdt_object_exists(obj)) {
2839 mdt_object_put(env, obj);
2840 /* for capability renew ENOENT will be handled in
2842 if (body->valid & OBD_MD_FLOSSCAPA)
2847 info->mti_object = obj;
2856 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2858 struct req_capsule *pill = info->mti_pill;
2862 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2863 rc = mdt_body_unpack(info, flags);
2867 if (rc == 0 && (flags & HABEO_REFERO)) {
2869 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2870 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2871 info->mti_body->eadatasize);
2872 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2873 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
2876 rc = req_capsule_server_pack(pill);
2881 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2883 struct md_device *next = m->mdt_child;
2885 return next->md_ops->mdo_init_capa_ctxt(env, next,
2886 m->mdt_opts.mo_mds_capa,
2887 m->mdt_capa_timeout,
2893 * Invoke handler for this request opc. Also do necessary preprocessing
2894 * (according to handler ->mh_flags), and post-processing (setting of
2895 * ->last_{xid,committed}).
2897 static int mdt_req_handle(struct mdt_thread_info *info,
2898 struct mdt_handler *h, struct ptlrpc_request *req)
2900 int rc, serious = 0;
2905 LASSERT(h->mh_act != NULL);
2906 LASSERT(h->mh_opc == lustre_msg_get_opc(req->rq_reqmsg));
2907 LASSERT(current->journal_info == NULL);
2910 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
2911 * to put same checks into handlers like mdt_close(), mdt_reint(),
2912 * etc., without talking to mdt authors first. Checking same thing
2913 * there again is useless and returning 0 error without packing reply
2914 * is buggy! Handlers either pack reply or return error.
2916 * We return 0 here and do not send any reply in order to emulate
2917 * network failure. Do not send any reply in case any of NET related
2918 * fail_id has occured.
2920 if (OBD_FAIL_CHECK_ORSET(h->mh_fail_id, OBD_FAIL_ONCE))
2924 flags = h->mh_flags;
2925 LASSERT(ergo(flags & (HABEO_CORPUS|HABEO_REFERO), h->mh_fmt != NULL));
2927 if (h->mh_fmt != NULL) {
2928 req_capsule_set(info->mti_pill, h->mh_fmt);
2929 rc = mdt_unpack_req_pack_rep(info, flags);
2932 if (rc == 0 && flags & MUTABOR &&
2933 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
2934 /* should it be rq_status? */
2937 if (rc == 0 && flags & HABEO_CLAVIS) {
2938 struct ldlm_request *dlm_req;
2940 LASSERT(h->mh_fmt != NULL);
2942 dlm_req = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2943 if (dlm_req != NULL) {
2944 if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
2946 dlm_req->lock_desc.l_policy_data.\
2947 l_inodebits.bits == 0)) {
2949 * Lock without inodebits makes no sense and
2950 * will oops later in ldlm. If client miss to
2951 * set such bits, do not trigger ASSERTION.
2953 * For liblustre flock case, it maybe zero.
2957 if (info->mti_mdt->mdt_opts.mo_compat_resname)
2958 rc = mdt_lock_resname_compat(
2961 info->mti_dlm_req = dlm_req;
2968 /* capability setting changed via /proc, needs reinitialize ctxt */
2969 if (info->mti_mdt && info->mti_mdt->mdt_capa_conf) {
2970 mdt_init_capa_ctxt(info->mti_env, info->mti_mdt);
2971 info->mti_mdt->mdt_capa_conf = 0;
2974 if (likely(rc == 0)) {
2976 * Process request, there can be two types of rc:
2977 * 1) errors with msg unpack/pack, other failures outside the
2978 * operation itself. This is counted as serious errors;
2979 * 2) errors during fs operation, should be placed in rq_status
2982 rc = h->mh_act(info);
2984 !req->rq_no_reply && req->rq_reply_state == NULL) {
2985 DEBUG_REQ(D_ERROR, req, "MDT \"handler\" %s did not "
2986 "pack reply and returned 0 error\n",
2990 serious = is_serious(rc);
2991 rc = clear_serious(rc);
2995 req->rq_status = rc;
2998 * ELDLM_* codes which > 0 should be in rq_status only as well as
2999 * all non-serious errors.
3001 if (rc > 0 || !serious)
3004 LASSERT(current->journal_info == NULL);
3006 if (rc == 0 && (flags & HABEO_CLAVIS) &&
3007 info->mti_mdt->mdt_opts.mo_compat_resname) {
3008 struct ldlm_reply *dlmrep;
3010 dlmrep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3012 rc = mdt_lock_reply_compat(info->mti_mdt, dlmrep);
3015 /* If we're DISCONNECTing, the mdt_export_data is already freed */
3016 if (likely(rc == 0 && req->rq_export && h->mh_opc != MDS_DISCONNECT))
3017 target_committed_to_req(req);
3019 if (unlikely(req_is_replay(req) &&
3020 lustre_msg_get_transno(req->rq_reqmsg) == 0)) {
3021 DEBUG_REQ(D_ERROR, req, "transno is 0 during REPLAY");
3025 target_send_reply(req, rc, info->mti_fail_id);
3029 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
3031 lh->mlh_type = MDT_NUL_LOCK;
3032 lh->mlh_reg_lh.cookie = 0ull;
3033 lh->mlh_reg_mode = LCK_MINMODE;
3034 lh->mlh_pdo_lh.cookie = 0ull;
3035 lh->mlh_pdo_mode = LCK_MINMODE;
3036 lh->mlh_rreg_lh.cookie = 0ull;
3037 lh->mlh_rreg_mode = LCK_MINMODE;
3040 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
3042 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3043 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3047 * Initialize fields of struct mdt_thread_info. Other fields are left in
3048 * uninitialized state, because it's too expensive to zero out whole
3049 * mdt_thread_info (> 1K) on each request arrival.
3051 static void mdt_thread_info_init(struct ptlrpc_request *req,
3052 struct mdt_thread_info *info)
3056 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
3057 info->mti_pill = &req->rq_pill;
3060 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3061 mdt_lock_handle_init(&info->mti_lh[i]);
3063 /* mdt device: it can be NULL while CONNECT */
3064 if (req->rq_export) {
3065 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
3066 info->mti_exp = req->rq_export;
3068 info->mti_mdt = NULL;
3069 info->mti_env = req->rq_svc_thread->t_env;
3070 info->mti_fail_id = OBD_FAIL_MDS_ALL_REPLY_NET;
3071 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
3072 info->mti_mos = NULL;
3074 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
3075 info->mti_big_buf = LU_BUF_NULL;
3076 info->mti_body = NULL;
3077 info->mti_object = NULL;
3078 info->mti_dlm_req = NULL;
3079 info->mti_has_trans = 0;
3080 info->mti_cross_ref = 0;
3081 info->mti_opdata = 0;
3082 info->mti_big_lmm_used = 0;
3084 /* To not check for split by default. */
3085 info->mti_spec.no_create = 0;
3086 info->mti_spec.sp_rm_entry = 0;
3089 static void mdt_thread_info_fini(struct mdt_thread_info *info)
3093 req_capsule_fini(info->mti_pill);
3094 if (info->mti_object != NULL) {
3095 mdt_object_put(info->mti_env, info->mti_object);
3096 info->mti_object = NULL;
3099 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3100 mdt_lock_handle_fini(&info->mti_lh[i]);
3101 info->mti_env = NULL;
3103 if (unlikely(info->mti_big_buf.lb_buf != NULL))
3104 lu_buf_free(&info->mti_big_buf);
3107 static int mdt_filter_recovery_request(struct ptlrpc_request *req,
3108 struct obd_device *obd, int *process)
3110 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3111 case MDS_CONNECT: /* This will never get here, but for completeness. */
3112 case OST_CONNECT: /* This will never get here, but for completeness. */
3113 case MDS_DISCONNECT:
3114 case OST_DISCONNECT:
3120 case MDS_DONE_WRITING:
3121 case MDS_SYNC: /* used in unmounting */
3128 *process = target_queue_recovery_request(req, obd);
3132 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
3139 * Handle recovery. Return:
3140 * +1: continue request processing;
3141 * -ve: abort immediately with the given error code;
3142 * 0: send reply with error code in req->rq_status;
3144 static int mdt_recovery(struct mdt_thread_info *info)
3146 struct ptlrpc_request *req = mdt_info_req(info);
3147 struct obd_device *obd;
3151 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3154 case SEC_CTX_INIT_CONT:
3160 rc = mdt_handle_idmap(info);
3169 if (unlikely(!class_connected_export(req->rq_export))) {
3170 CDEBUG(D_HA, "operation %d on unconnected MDS from %s\n",
3171 lustre_msg_get_opc(req->rq_reqmsg),
3172 libcfs_id2str(req->rq_peer));
3173 /* FIXME: For CMD cleanup, when mds_B stop, the req from
3174 * mds_A will get -ENOTCONN(especially for ping req),
3175 * which will cause that mds_A deactive timeout, then when
3176 * mds_A cleanup, the cleanup process will be suspended since
3177 * deactive timeout is not zero.
3179 req->rq_status = -ENOTCONN;
3180 target_send_reply(req, -ENOTCONN, info->mti_fail_id);
3184 /* sanity check: if the xid matches, the request must be marked as a
3185 * resent or replayed */
3186 if (req_xid_is_last(req)) {
3187 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
3188 (MSG_RESENT | MSG_REPLAY))) {
3189 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches last_xid, "
3190 "expected REPLAY or RESENT flag (%x)", req->rq_xid,
3191 lustre_msg_get_flags(req->rq_reqmsg));
3193 req->rq_status = -ENOTCONN;
3198 /* else: note the opposite is not always true; a RESENT req after a
3199 * failover will usually not match the last_xid, since it was likely
3200 * never committed. A REPLAYed request will almost never match the
3201 * last xid, however it could for a committed, but still retained,
3204 obd = req->rq_export->exp_obd;
3206 /* Check for aborted recovery... */
3207 if (unlikely(obd->obd_recovering)) {
3210 DEBUG_REQ(D_INFO, req, "Got new replay");
3211 rc = mdt_filter_recovery_request(req, obd, &should_process);
3212 if (rc != 0 || !should_process)
3214 else if (should_process < 0) {
3215 req->rq_status = should_process;
3216 rc = ptlrpc_error(req);
3223 static int mdt_msg_check_version(struct lustre_msg *msg)
3227 switch (lustre_msg_get_opc(msg)) {
3229 case MDS_DISCONNECT:
3232 case SEC_CTX_INIT_CONT:
3235 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
3237 CERROR("bad opc %u version %08x, expecting %08x\n",
3238 lustre_msg_get_opc(msg),
3239 lustre_msg_get_version(msg),
3240 LUSTRE_OBD_VERSION);
3244 case MDS_GETATTR_NAME:
3251 case MDS_DONE_WRITING:
3258 case MDS_HSM_PROGRESS:
3259 case MDS_HSM_REQUEST:
3260 case MDS_HSM_CT_REGISTER:
3261 case MDS_HSM_CT_UNREGISTER:
3262 case MDS_HSM_STATE_GET:
3263 case MDS_HSM_STATE_SET:
3264 case MDS_HSM_ACTION:
3265 case MDS_QUOTACHECK:
3268 case MDS_SWAP_LAYOUTS:
3273 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
3275 CERROR("bad opc %u version %08x, expecting %08x\n",
3276 lustre_msg_get_opc(msg),
3277 lustre_msg_get_version(msg),
3278 LUSTRE_MDS_VERSION);
3282 case LDLM_BL_CALLBACK:
3283 case LDLM_CP_CALLBACK:
3284 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
3286 CERROR("bad opc %u version %08x, expecting %08x\n",
3287 lustre_msg_get_opc(msg),
3288 lustre_msg_get_version(msg),
3289 LUSTRE_DLM_VERSION);
3291 case OBD_LOG_CANCEL:
3292 case LLOG_ORIGIN_HANDLE_CREATE:
3293 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
3294 case LLOG_ORIGIN_HANDLE_READ_HEADER:
3295 case LLOG_ORIGIN_HANDLE_CLOSE:
3296 case LLOG_ORIGIN_HANDLE_DESTROY:
3297 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
3299 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
3301 CERROR("bad opc %u version %08x, expecting %08x\n",
3302 lustre_msg_get_opc(msg),
3303 lustre_msg_get_version(msg),
3304 LUSTRE_LOG_VERSION);
3307 CERROR("MDS unknown opcode %d\n", lustre_msg_get_opc(msg));
3313 static int mdt_handle0(struct ptlrpc_request *req,
3314 struct mdt_thread_info *info,
3315 struct mdt_opc_slice *supported)
3317 struct mdt_handler *h;
3318 struct lustre_msg *msg;
3323 if (OBD_FAIL_CHECK_ORSET(OBD_FAIL_MDS_ALL_REQUEST_NET, OBD_FAIL_ONCE))
3326 LASSERT(current->journal_info == NULL);
3328 msg = req->rq_reqmsg;
3329 rc = mdt_msg_check_version(msg);
3330 if (likely(rc == 0)) {
3331 rc = mdt_recovery(info);
3332 if (likely(rc == +1)) {
3333 h = mdt_handler_find(lustre_msg_get_opc(msg),
3335 if (likely(h != NULL)) {
3336 rc = mdt_req_handle(info, h, req);
3338 CERROR("The unsupported opc: 0x%x\n",
3339 lustre_msg_get_opc(msg) );
3340 req->rq_status = -ENOTSUPP;
3341 rc = ptlrpc_error(req);
3346 CERROR(LUSTRE_MDT_NAME" drops mal-formed request\n");
3351 * MDT handler function called by ptlrpc service thread when request comes.
3353 * XXX common "target" functionality should be factored into separate module
3354 * shared by mdt, ost and stand-alone services like fld.
3356 int mdt_handle_common(struct ptlrpc_request *req,
3357 struct mdt_opc_slice *supported)
3360 struct mdt_thread_info *info;
3364 env = req->rq_svc_thread->t_env;
3365 /* Refill(initilize) the context(mdt_thread_info), in case it is
3366 * not initialized yet. Usually it happens during start up, after
3367 * MDS(ptlrpc threads) is start up, it gets the first CONNECT request,
3368 * before MDT_thread_info is initialized */
3370 LASSERT(env != NULL);
3371 LASSERT(env->le_ses != NULL);
3372 LASSERT(env->le_ctx.lc_thread == req->rq_svc_thread);
3373 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3374 LASSERT(info != NULL);
3376 mdt_thread_info_init(req, info);
3378 rc = mdt_handle0(req, info, supported);
3380 mdt_thread_info_fini(info);
3385 * This is called from recovery code as handler of _all_ RPC types, FLD and SEQ
3388 int mdt_recovery_handle(struct ptlrpc_request *req)
3393 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3395 rc = mdt_handle_common(req, mdt_fld_handlers);
3398 rc = mdt_handle_common(req, mdt_seq_handlers);
3401 rc = mdt_handle_common(req, mdt_regular_handlers);
3423 static int mdt_intent_getattr(enum mdt_it_code opcode,
3424 struct mdt_thread_info *info,
3425 struct ldlm_lock **,
3427 static int mdt_intent_layout(enum mdt_it_code opcode,
3428 struct mdt_thread_info *info,
3429 struct ldlm_lock **,
3431 static int mdt_intent_reint(enum mdt_it_code opcode,
3432 struct mdt_thread_info *info,
3433 struct ldlm_lock **,
3436 static struct mdt_it_flavor {
3437 const struct req_format *it_fmt;
3439 int (*it_act)(enum mdt_it_code ,
3440 struct mdt_thread_info *,
3441 struct ldlm_lock **,
3444 } mdt_it_flavor[] = {
3446 .it_fmt = &RQF_LDLM_INTENT,
3447 /*.it_flags = HABEO_REFERO,*/
3449 .it_act = mdt_intent_reint,
3450 .it_reint = REINT_OPEN
3453 .it_fmt = &RQF_LDLM_INTENT,
3454 .it_flags = MUTABOR,
3455 .it_act = mdt_intent_reint,
3456 .it_reint = REINT_OPEN
3459 .it_fmt = &RQF_LDLM_INTENT,
3460 .it_flags = MUTABOR,
3461 .it_act = mdt_intent_reint,
3462 .it_reint = REINT_CREATE
3464 [MDT_IT_GETATTR] = {
3465 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3466 .it_flags = HABEO_REFERO,
3467 .it_act = mdt_intent_getattr
3469 [MDT_IT_READDIR] = {
3475 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3476 .it_flags = HABEO_REFERO,
3477 .it_act = mdt_intent_getattr
3480 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
3481 .it_flags = MUTABOR,
3483 .it_reint = REINT_UNLINK
3487 .it_flags = MUTABOR,
3490 [MDT_IT_GETXATTR] = {
3496 .it_fmt = &RQF_LDLM_INTENT_LAYOUT,
3498 .it_act = mdt_intent_layout
3502 int mdt_intent_lock_replace(struct mdt_thread_info *info,
3503 struct ldlm_lock **lockp,
3504 struct ldlm_lock *new_lock,
3505 struct mdt_lock_handle *lh,
3508 struct ptlrpc_request *req = mdt_info_req(info);
3509 struct ldlm_lock *lock = *lockp;
3512 * Get new lock only for cases when possible resent did not find any
3515 if (new_lock == NULL)
3516 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3518 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3519 lh->mlh_reg_lh.cookie = 0;
3523 LASSERTF(new_lock != NULL,
3524 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
3527 * If we've already given this lock to a client once, then we should
3528 * have no readers or writers. Otherwise, we should have one reader
3529 * _or_ writer ref (which will be zeroed below) before returning the
3532 if (new_lock->l_export == req->rq_export) {
3533 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3535 LASSERT(new_lock->l_export == NULL);
3536 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3541 if (new_lock->l_export == req->rq_export) {
3543 * Already gave this to the client, which means that we
3544 * reconstructed a reply.
3546 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3548 lh->mlh_reg_lh.cookie = 0;
3549 RETURN(ELDLM_LOCK_REPLACED);
3553 * Fixup the lock to be given to the client.
3555 lock_res_and_lock(new_lock);
3556 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3557 * possible blocking AST. */
3558 while (new_lock->l_readers > 0) {
3559 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3560 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3561 new_lock->l_readers--;
3563 while (new_lock->l_writers > 0) {
3564 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3565 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3566 new_lock->l_writers--;
3569 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3570 new_lock->l_blocking_ast = lock->l_blocking_ast;
3571 new_lock->l_completion_ast = lock->l_completion_ast;
3572 new_lock->l_remote_handle = lock->l_remote_handle;
3573 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3575 unlock_res_and_lock(new_lock);
3577 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3578 &new_lock->l_remote_handle,
3579 &new_lock->l_exp_hash);
3581 LDLM_LOCK_RELEASE(new_lock);
3582 lh->mlh_reg_lh.cookie = 0;
3584 RETURN(ELDLM_LOCK_REPLACED);
3587 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3588 struct ldlm_lock *new_lock,
3589 struct ldlm_lock **old_lock,
3590 struct mdt_lock_handle *lh)
3592 struct ptlrpc_request *req = mdt_info_req(info);
3593 struct obd_export *exp = req->rq_export;
3594 struct lustre_handle remote_hdl;
3595 struct ldlm_request *dlmreq;
3596 struct ldlm_lock *lock;
3598 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3601 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3602 remote_hdl = dlmreq->lock_handle[0];
3604 /* In the function below, .hs_keycmp resolves to
3605 * ldlm_export_lock_keycmp() */
3606 /* coverity[overrun-buffer-val] */
3607 lock = cfs_hash_lookup(exp->exp_lock_hash, &remote_hdl);
3609 if (lock != new_lock) {
3610 lh->mlh_reg_lh.cookie = lock->l_handle.h_cookie;
3611 lh->mlh_reg_mode = lock->l_granted_mode;
3613 LDLM_DEBUG(lock, "Restoring lock cookie");
3614 DEBUG_REQ(D_DLMTRACE, req,
3615 "restoring lock cookie "LPX64,
3616 lh->mlh_reg_lh.cookie);
3618 *old_lock = LDLM_LOCK_GET(lock);
3619 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
3623 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
3627 * If the xid matches, then we know this is a resent request, and allow
3628 * it. (It's probably an OPEN, for which we don't send a lock.
3630 if (req_xid_is_last(req))
3634 * This remote handle isn't enqueued, so we never received or processed
3635 * this request. Clear MSG_RESENT, because it can be handled like any
3636 * normal request now.
3638 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3640 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
3644 static int mdt_intent_getattr(enum mdt_it_code opcode,
3645 struct mdt_thread_info *info,
3646 struct ldlm_lock **lockp,
3649 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3650 struct ldlm_lock *new_lock = NULL;
3652 struct ldlm_reply *ldlm_rep;
3653 struct ptlrpc_request *req;
3654 struct mdt_body *reqbody;
3655 struct mdt_body *repbody;
3659 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3662 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3665 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
3666 repbody->eadatasize = 0;
3667 repbody->aclsize = 0;
3671 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM;
3673 case MDT_IT_GETATTR:
3674 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
3678 CERROR("Unsupported intent (%d)\n", opcode);
3679 GOTO(out_shrink, rc = -EINVAL);
3682 rc = mdt_init_ucred(info, reqbody);
3684 GOTO(out_shrink, rc);
3686 req = info->mti_pill->rc_req;
3687 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3688 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3690 /* Get lock from request for possible resent case. */
3691 mdt_intent_fixup_resent(info, *lockp, &new_lock, lhc);
3693 ldlm_rep->lock_policy_res2 =
3694 mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3696 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3697 ldlm_rep->lock_policy_res2 = 0;
3698 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3699 ldlm_rep->lock_policy_res2) {
3700 lhc->mlh_reg_lh.cookie = 0ull;
3701 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3704 rc = mdt_intent_lock_replace(info, lockp, new_lock, lhc, flags);
3707 mdt_exit_ucred(info);
3709 mdt_client_compatibility(info);
3710 rc2 = mdt_fix_reply(info);
3716 static int mdt_intent_layout(enum mdt_it_code opcode,
3717 struct mdt_thread_info *info,
3718 struct ldlm_lock **lockp,
3721 struct layout_intent *layout;
3725 if (opcode != MDT_IT_LAYOUT) {
3726 CERROR("%s: Unknown intent (%d)\n",
3727 info->mti_exp->exp_obd->obd_name, opcode);
3731 (*lockp)->l_lvb_type = LVB_T_LAYOUT;
3732 req_capsule_set_size(info->mti_pill, &RMF_DLM_LVB, RCL_SERVER,
3733 ldlm_lvbo_size(*lockp));
3734 rc = req_capsule_server_pack(info->mti_pill);
3738 layout = req_capsule_client_get(info->mti_pill, &RMF_LAYOUT_INTENT);
3739 LASSERT(layout != NULL);
3740 if (layout->li_opc == LAYOUT_INTENT_ACCESS)
3741 /* return to normal ldlm handling */
3744 CERROR("%s: Unsupported layout intent (%d)\n",
3745 info->mti_exp->exp_obd->obd_name, layout->li_opc);
3749 static int mdt_intent_reint(enum mdt_it_code opcode,
3750 struct mdt_thread_info *info,
3751 struct ldlm_lock **lockp,
3754 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3755 struct ldlm_reply *rep = NULL;
3759 static const struct req_format *intent_fmts[REINT_MAX] = {
3760 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3761 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3766 opc = mdt_reint_opcode(info, intent_fmts);
3770 if (mdt_it_flavor[opcode].it_reint != opc) {
3771 CERROR("Reint code %ld doesn't match intent: %d\n",
3773 RETURN(err_serious(-EPROTO));
3776 /* Get lock from request for possible resent case. */
3777 mdt_intent_fixup_resent(info, *lockp, NULL, lhc);
3779 rc = mdt_reint_internal(info, lhc, opc);
3781 /* Check whether the reply has been packed successfully. */
3782 if (mdt_info_req(info)->rq_repmsg != NULL)
3783 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3785 RETURN(err_serious(-EFAULT));
3787 /* MDC expects this in any case */
3789 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3791 /* Cross-ref case, the lock should be returned to the client */
3792 if (rc == -EREMOTE) {
3793 LASSERT(lustre_handle_is_used(&lhc->mlh_reg_lh));
3794 rep->lock_policy_res2 = 0;
3795 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3798 rep->lock_policy_res2 = clear_serious(rc);
3800 if (rep->lock_policy_res2 == -ENOENT &&
3801 mdt_get_disposition(rep, DISP_LOOKUP_NEG))
3802 rep->lock_policy_res2 = 0;
3804 if (rc == -ENOTCONN || rc == -ENODEV ||
3805 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3807 * If it is the disconnect error (ENODEV & ENOCONN), the error
3808 * will be returned by rq_status, and client at ptlrpc layer
3809 * will detect this, then disconnect, reconnect the import
3810 * immediately, instead of impacting the following the rpc.
3812 lhc->mlh_reg_lh.cookie = 0ull;
3816 * For other cases, the error will be returned by intent.
3817 * and client will retrieve the result from intent.
3820 * FIXME: when open lock is finished, that should be
3823 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3824 LASSERTF(rc == 0, "Error occurred but lock handle "
3825 "is still in use, rc = %d\n", rc);
3826 rep->lock_policy_res2 = 0;
3827 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3830 lhc->mlh_reg_lh.cookie = 0ull;
3831 RETURN(ELDLM_LOCK_ABORTED);
3836 static int mdt_intent_code(long itcode)
3844 case IT_OPEN|IT_CREAT:
3851 rc = MDT_IT_READDIR;
3854 rc = MDT_IT_GETATTR;
3866 rc = MDT_IT_GETXATTR;
3871 case IT_QUOTA_DQACQ:
3876 CERROR("Unknown intent opcode: %ld\n", itcode);
3883 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
3884 struct ldlm_lock **lockp, __u64 flags)
3886 struct req_capsule *pill;
3887 struct mdt_it_flavor *flv;
3892 opc = mdt_intent_code(itopc);
3896 pill = info->mti_pill;
3898 if (opc == MDT_IT_QUOTA) {
3899 struct lu_device *qmt = info->mti_mdt->mdt_qmt_dev;
3902 RETURN(-EOPNOTSUPP);
3904 (*lockp)->l_lvb_type = LVB_T_LQUOTA;
3905 /* pass the request to quota master */
3906 rc = qmt_hdls.qmth_intent_policy(info->mti_env, qmt,
3907 mdt_info_req(info), lockp,
3912 flv = &mdt_it_flavor[opc];
3913 if (flv->it_fmt != NULL)
3914 req_capsule_extend(pill, flv->it_fmt);
3916 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
3918 struct ptlrpc_request *req = mdt_info_req(info);
3919 if (flv->it_flags & MUTABOR &&
3920 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
3923 if (rc == 0 && flv->it_act != NULL) {
3924 /* execute policy */
3925 rc = flv->it_act(opc, info, lockp, flags);
3932 static int mdt_intent_policy(struct ldlm_namespace *ns,
3933 struct ldlm_lock **lockp, void *req_cookie,
3934 ldlm_mode_t mode, __u64 flags, void *data)
3936 struct mdt_thread_info *info;
3937 struct ptlrpc_request *req = req_cookie;
3938 struct ldlm_intent *it;
3939 struct req_capsule *pill;
3944 LASSERT(req != NULL);
3946 info = lu_context_key_get(&req->rq_svc_thread->t_env->le_ctx,
3948 LASSERT(info != NULL);
3949 pill = info->mti_pill;
3950 LASSERT(pill->rc_req == req);
3952 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
3953 req_capsule_extend(pill, &RQF_LDLM_INTENT_BASIC);
3954 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
3956 rc = mdt_intent_opc(it->opc, info, lockp, flags);
3960 /* Lock without inodebits makes no sense and will oops
3961 * later in ldlm. Let's check it now to see if we have
3962 * ibits corrupted somewhere in mdt_intent_opc().
3963 * The case for client miss to set ibits has been
3964 * processed by others. */
3965 LASSERT(ergo(info->mti_dlm_req->lock_desc.l_resource.\
3966 lr_type == LDLM_IBITS,
3967 info->mti_dlm_req->lock_desc.\
3968 l_policy_data.l_inodebits.bits != 0));
3970 rc = err_serious(-EFAULT);
3972 /* No intent was provided */
3973 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
3974 req_capsule_set_size(pill, &RMF_DLM_LVB, RCL_SERVER, 0);
3975 rc = req_capsule_server_pack(pill);
3977 rc = err_serious(rc);
3982 static int mdt_seq_fini(const struct lu_env *env,
3983 struct mdt_device *m)
3985 return seq_site_fini(env, mdt_seq_site(m));
3988 static int mdt_seq_init(const struct lu_env *env,
3990 struct mdt_device *m)
3992 struct seq_server_site *ss;
3997 ss = mdt_seq_site(m);
4000 * This is sequence-controller node. Init seq-controller server on local
4003 if (ss->ss_node_id == 0) {
4004 LASSERT(ss->ss_control_seq == NULL);
4006 OBD_ALLOC_PTR(ss->ss_control_seq);
4007 if (ss->ss_control_seq == NULL)
4010 rc = seq_server_init(ss->ss_control_seq,
4011 m->mdt_bottom, uuid,
4012 LUSTRE_SEQ_CONTROLLER,
4017 GOTO(out_seq_fini, rc);
4019 OBD_ALLOC_PTR(ss->ss_client_seq);
4020 if (ss->ss_client_seq == NULL)
4021 GOTO(out_seq_fini, rc = -ENOMEM);
4023 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
4024 if (prefix == NULL) {
4025 OBD_FREE_PTR(ss->ss_client_seq);
4026 GOTO(out_seq_fini, rc = -ENOMEM);
4029 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
4033 * Init seq-controller client after seq-controller server is
4034 * ready. Pass ss->ss_control_seq to it for direct talking.
4036 rc = seq_client_init(ss->ss_client_seq, NULL,
4037 LUSTRE_SEQ_METADATA, prefix,
4038 ss->ss_control_seq);
4039 OBD_FREE(prefix, MAX_OBD_NAME + 5);
4042 GOTO(out_seq_fini, rc);
4045 /* Init seq-server on local MDT */
4046 LASSERT(ss->ss_server_seq == NULL);
4048 OBD_ALLOC_PTR(ss->ss_server_seq);
4049 if (ss->ss_server_seq == NULL)
4050 GOTO(out_seq_fini, rc = -ENOMEM);
4052 rc = seq_server_init(ss->ss_server_seq,
4053 m->mdt_bottom, uuid,
4058 GOTO(out_seq_fini, rc = -ENOMEM);
4060 /* Assign seq-controller client to local seq-server. */
4061 if (ss->ss_node_id == 0) {
4062 LASSERT(ss->ss_client_seq != NULL);
4064 rc = seq_server_set_cli(ss->ss_server_seq,
4072 mdt_seq_fini(env, m);
4080 static int mdt_fld_fini(const struct lu_env *env,
4081 struct mdt_device *m)
4083 struct seq_server_site *ss = mdt_seq_site(m);
4086 if (ss && ss->ss_server_fld) {
4087 fld_server_fini(env, ss->ss_server_fld);
4088 OBD_FREE_PTR(ss->ss_server_fld);
4089 ss->ss_server_fld = NULL;
4095 static int mdt_fld_init(const struct lu_env *env,
4097 struct mdt_device *m)
4099 struct seq_server_site *ss;
4103 ss = mdt_seq_site(m);
4105 OBD_ALLOC_PTR(ss->ss_server_fld);
4106 if (ss->ss_server_fld == NULL)
4107 RETURN(rc = -ENOMEM);
4109 rc = fld_server_init(env, ss->ss_server_fld, m->mdt_bottom, uuid,
4110 ss->ss_node_id, LU_SEQ_RANGE_MDT);
4112 OBD_FREE_PTR(ss->ss_server_fld);
4113 ss->ss_server_fld = NULL;
4120 static void mdt_stack_pre_fini(const struct lu_env *env,
4121 struct mdt_device *m, struct lu_device *top)
4123 struct obd_device *obd = mdt2obd_dev(m);
4124 struct lustre_cfg_bufs *bufs;
4125 struct lustre_cfg *lcfg;
4126 struct mdt_thread_info *info;
4131 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4132 LASSERT(info != NULL);
4134 bufs = &info->mti_u.bufs;
4136 LASSERT(m->mdt_child_exp);
4137 LASSERT(m->mdt_child_exp->exp_obd);
4138 obd = m->mdt_child_exp->exp_obd;
4140 /* process cleanup, pass mdt obd name to get obd umount flags */
4141 /* XXX: this is needed because all layers are referenced by
4142 * objects (some of them are pinned by osd, for example *
4143 * the proper solution should be a model where object used
4144 * by osd only doesn't have mdt/mdd slices -bzzz */
4145 lustre_cfg_bufs_reset(bufs, obd->obd_name);
4146 lustre_cfg_bufs_set_string(bufs, 1, NULL);
4147 lcfg = lustre_cfg_new(LCFG_PRE_CLEANUP, bufs);
4149 CERROR("%s:Cannot alloc lcfg!\n", mdt_obd_name(m));
4152 top->ld_ops->ldo_process_config(env, top, lcfg);
4153 lustre_cfg_free(lcfg);
4157 static void mdt_stack_fini(const struct lu_env *env,
4158 struct mdt_device *m, struct lu_device *top)
4160 struct obd_device *obd = mdt2obd_dev(m);
4161 struct lustre_cfg_bufs *bufs;
4162 struct lustre_cfg *lcfg;
4163 struct mdt_thread_info *info;
4167 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4168 LASSERT(info != NULL);
4170 lu_dev_del_linkage(top->ld_site, top);
4172 lu_site_purge(env, top->ld_site, -1);
4174 bufs = &info->mti_u.bufs;
4175 /* process cleanup, pass mdt obd name to get obd umount flags */
4176 /* another purpose is to let all layers to release their objects */
4177 lustre_cfg_bufs_reset(bufs, obd->obd_name);
4182 lustre_cfg_bufs_set_string(bufs, 1, flags);
4183 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
4185 CERROR("Cannot alloc lcfg!\n");
4189 top->ld_ops->ldo_process_config(env, top, lcfg);
4190 lustre_cfg_free(lcfg);
4192 lu_site_purge(env, top->ld_site, -1);
4194 m->mdt_child = NULL;
4195 m->mdt_bottom = NULL;
4197 obd_disconnect(m->mdt_child_exp);
4198 m->mdt_child_exp = NULL;
4200 obd_disconnect(m->mdt_bottom_exp);
4201 m->mdt_child_exp = NULL;
4204 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
4205 const char *next, struct obd_export **exp)
4207 struct obd_connect_data *data = NULL;
4208 struct obd_device *obd;
4212 OBD_ALLOC_PTR(data);
4214 GOTO(out, rc = -ENOMEM);
4216 obd = class_name2obd(next);
4218 CERROR("%s: can't locate next device: %s\n",
4219 m->mdt_md_dev.md_lu_dev.ld_obd->obd_name, next);
4220 GOTO(out, rc = -ENOTCONN);
4223 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4224 data->ocd_version = LUSTRE_VERSION_CODE;
4226 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
4228 CERROR("%s: cannot connect to next dev %s (%d)\n",
4229 m->mdt_md_dev.md_lu_dev.ld_obd->obd_name, next, rc);
4239 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
4240 struct lustre_cfg *cfg)
4242 char *dev = lustre_cfg_string(cfg, 0);
4243 int rc, name_size, uuid_size;
4244 char *name, *uuid, *p;
4245 struct lustre_cfg_bufs *bufs;
4246 struct lustre_cfg *lcfg;
4247 struct obd_device *obd;
4248 struct lustre_profile *lprof;
4249 struct lu_site *site;
4252 /* in 1.8 we had the only device in the stack - MDS.
4253 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
4254 * in 2.3 OSD is instantiated by obd_mount.c, so we need
4255 * to generate names and setup MDT, MDD. MDT will be using
4256 * generated name to connect to MDD. for MDD the next device
4257 * will be LOD with name taken from so called "profile" which
4258 * is generated by mount_option line
4260 * 1.8 MGS generates config. commands like this:
4261 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
4262 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
4263 * 2.0 MGS generates config. commands like this:
4264 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
4265 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4266 * 3:lustre-MDT0000-mdtlov 4:f
4268 * we generate MDD name from MDT one, just replacing T with D
4270 * after all the preparations, the logical equivalent will be
4271 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
4272 * 3:lustre-MDT0000-mdtlov 4:f
4273 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4274 * 3:lustre-MDD0000 4:f
4276 * notice we build the stack from down to top: MDD first, then MDT */
4278 name_size = MAX_OBD_NAME;
4279 uuid_size = MAX_OBD_NAME;
4281 OBD_ALLOC(name, name_size);
4282 OBD_ALLOC(uuid, uuid_size);
4283 if (name == NULL || uuid == NULL)
4284 GOTO(cleanup_mem, rc = -ENOMEM);
4286 OBD_ALLOC_PTR(bufs);
4288 GOTO(cleanup_mem, rc = -ENOMEM);
4291 p = strstr(name, "-MDT");
4293 GOTO(cleanup_mem, rc = -ENOMEM);
4296 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
4298 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4299 if (lprof == NULL || lprof->lp_dt == NULL) {
4300 CERROR("can't find the profile: %s\n",
4301 lustre_cfg_string(cfg, 0));
4302 GOTO(cleanup_mem, rc = -EINVAL);
4305 lustre_cfg_bufs_reset(bufs, name);
4306 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
4307 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4308 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4310 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
4312 GOTO(free_bufs, rc = -ENOMEM);
4314 rc = class_attach(lcfg);
4316 GOTO(lcfg_cleanup, rc);
4318 obd = class_name2obd(name);
4320 CERROR("Can not find obd %s (%s in config)\n",
4321 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
4322 GOTO(class_detach, rc = -EINVAL);
4325 lustre_cfg_free(lcfg);
4327 lustre_cfg_bufs_reset(bufs, name);
4328 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4329 lustre_cfg_bufs_set_string(bufs, 2, dev);
4330 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4332 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4334 rc = class_setup(obd, lcfg);
4336 GOTO(class_detach, rc);
4338 /* connect to MDD we just setup */
4339 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
4343 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
4345 LASSERT(mdt->mdt_md_dev.md_lu_dev.ld_site == NULL);
4346 mdt->mdt_md_dev.md_lu_dev.ld_site = site;
4347 site->ls_top_dev = &mdt->mdt_md_dev.md_lu_dev;
4348 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
4351 /* now connect to bottom OSD */
4352 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
4353 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
4357 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
4360 rc = lu_env_refill((struct lu_env *)env);
4362 CERROR("Failure to refill session: '%d'\n", rc);
4364 lu_dev_add_linkage(site, &mdt->mdt_md_dev.md_lu_dev);
4369 class_detach(obd, lcfg);
4371 lustre_cfg_free(lcfg);
4376 OBD_FREE(name, name_size);
4378 OBD_FREE(uuid, uuid_size);
4382 /* setup quota master target on MDT0 */
4383 static int mdt_quota_init(const struct lu_env *env, struct mdt_device *mdt,
4384 struct lustre_cfg *cfg)
4386 struct obd_device *obd;
4387 char *dev = lustre_cfg_string(cfg, 0);
4388 char *qmtname, *uuid, *p;
4389 struct lustre_cfg_bufs *bufs;
4390 struct lustre_cfg *lcfg;
4391 struct lustre_profile *lprof;
4392 struct obd_connect_data *data;
4396 LASSERT(mdt->mdt_qmt_exp == NULL);
4397 LASSERT(mdt->mdt_qmt_dev == NULL);
4399 /* quota master is on MDT0 only for now */
4400 if (mdt->mdt_seq_site.ss_node_id != 0)
4403 /* MGS generates config commands which look as follows:
4404 * #01 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4405 * 3:lustre-MDT0000-mdtlov 4:f
4407 * We generate the QMT name from the MDT one, just replacing MD with QM
4408 * after all the preparations, the logical equivalent will be:
4409 * #01 (160)setup 0:lustre-QMT0000 1:lustre-QMT0000_UUID 2:0
4410 * 3:lustre-MDT0000-osd 4:f */
4411 OBD_ALLOC(qmtname, MAX_OBD_NAME);
4412 OBD_ALLOC(uuid, UUID_MAX);
4413 OBD_ALLOC_PTR(bufs);
4414 OBD_ALLOC_PTR(data);
4415 if (qmtname == NULL || uuid == NULL || bufs == NULL || data == NULL)
4416 GOTO(cleanup_mem, rc = -ENOMEM);
4418 strcpy(qmtname, dev);
4419 p = strstr(qmtname, "-MDT");
4421 GOTO(cleanup_mem, rc = -ENOMEM);
4422 /* replace MD with QM */
4426 snprintf(uuid, UUID_MAX, "%s_UUID", qmtname);
4428 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4429 if (lprof == NULL || lprof->lp_dt == NULL) {
4430 CERROR("can't find profile for %s\n",
4431 lustre_cfg_string(cfg, 0));
4432 GOTO(cleanup_mem, rc = -EINVAL);
4435 lustre_cfg_bufs_reset(bufs, qmtname);
4436 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_QMT_NAME);
4437 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4438 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4440 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
4442 GOTO(cleanup_mem, rc = -ENOMEM);
4444 rc = class_attach(lcfg);
4446 GOTO(lcfg_cleanup, rc);
4448 obd = class_name2obd(qmtname);
4450 CERROR("Can not find obd %s (%s in config)\n", qmtname,
4451 lustre_cfg_string(cfg, 0));
4452 GOTO(class_detach, rc = -EINVAL);
4455 lustre_cfg_free(lcfg);
4457 lustre_cfg_bufs_reset(bufs, qmtname);
4458 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4459 lustre_cfg_bufs_set_string(bufs, 2, dev);
4461 /* for quota, the next device should be the OSD device */
4462 lustre_cfg_bufs_set_string(bufs, 3,
4463 mdt->mdt_bottom->dd_lu_dev.ld_obd->obd_name);
4465 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4467 rc = class_setup(obd, lcfg);
4469 GOTO(class_detach, rc);
4471 mdt->mdt_qmt_dev = obd->obd_lu_dev;
4473 /* configure local quota objects */
4474 rc = mdt->mdt_qmt_dev->ld_ops->ldo_prepare(env,
4475 &mdt->mdt_md_dev.md_lu_dev,
4478 GOTO(class_cleanup, rc);
4480 /* connect to quota master target */
4481 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4482 data->ocd_version = LUSTRE_VERSION_CODE;
4483 rc = obd_connect(NULL, &mdt->mdt_qmt_exp, obd, &obd->obd_uuid,
4486 CERROR("cannot connect to quota master device %s (%d)\n",
4488 GOTO(class_cleanup, rc);
4494 class_manual_cleanup(obd);
4495 mdt->mdt_qmt_dev = NULL;
4499 class_detach(obd, lcfg);
4501 lustre_cfg_free(lcfg);
4506 OBD_FREE(qmtname, MAX_OBD_NAME);
4508 OBD_FREE(uuid, UUID_MAX);
4514 /* Shutdown quota master target associated with mdt */
4515 static void mdt_quota_fini(const struct lu_env *env, struct mdt_device *mdt)
4519 if (mdt->mdt_qmt_exp == NULL)
4521 LASSERT(mdt->mdt_qmt_dev != NULL);
4523 /* the qmt automatically shuts down when the mdt disconnects */
4524 obd_disconnect(mdt->mdt_qmt_exp);
4525 mdt->mdt_qmt_exp = NULL;
4526 mdt->mdt_qmt_dev = NULL;
4530 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4532 struct md_device *next = m->mdt_child;
4533 struct lu_device *d = &m->mdt_md_dev.md_lu_dev;
4534 struct obd_device *obd = mdt2obd_dev(m);
4537 target_recovery_fini(obd);
4539 ping_evictor_stop();
4542 mdt_stack_pre_fini(env, m, md2lu_dev(m->mdt_child));
4543 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4544 obd_exports_barrier(obd);
4545 obd_zombie_barrier();
4549 tgt_fini(env, &m->mdt_lut);
4550 mdt_fs_cleanup(env, m);
4551 upcall_cache_cleanup(m->mdt_identity_cache);
4552 m->mdt_identity_cache = NULL;
4554 if (m->mdt_namespace != NULL) {
4555 ldlm_namespace_free(m->mdt_namespace, NULL,
4556 d->ld_obd->obd_force);
4557 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
4560 mdt_quota_fini(env, m);
4562 cfs_free_nidlist(&m->mdt_nosquash_nids);
4563 if (m->mdt_nosquash_str) {
4564 OBD_FREE(m->mdt_nosquash_str, m->mdt_nosquash_strlen);
4565 m->mdt_nosquash_str = NULL;
4566 m->mdt_nosquash_strlen = 0;
4569 next->md_ops->mdo_iocontrol(env, next, OBD_IOC_PAUSE_LFSCK,
4571 mdt_seq_fini(env, m);
4572 mdt_fld_fini(env, m);
4573 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
4575 next->md_ops->mdo_init_capa_ctxt(env, next, 0, 0, 0, NULL);
4576 cfs_timer_disarm(&m->mdt_ck_timer);
4577 mdt_ck_thread_stop(m);
4582 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4584 LASSERT(cfs_atomic_read(&d->ld_ref) == 0);
4586 server_put_mount(mdt2obd_dev(m)->obd_name, NULL);
4591 static int mdt_adapt_sptlrpc_conf(struct obd_device *obd, int initial)
4593 struct mdt_device *m = mdt_dev(obd->obd_lu_dev);
4594 struct sptlrpc_rule_set tmp_rset;
4597 sptlrpc_rule_set_init(&tmp_rset);
4598 rc = sptlrpc_conf_target_get_rules(obd, &tmp_rset, initial);
4600 CERROR("mdt %s: failed get sptlrpc rules: %d\n",
4605 sptlrpc_target_update_exp_flavor(obd, &tmp_rset);
4607 write_lock(&m->mdt_sptlrpc_lock);
4608 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
4609 m->mdt_sptlrpc_rset = tmp_rset;
4610 write_unlock(&m->mdt_sptlrpc_lock);
4615 int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4617 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4618 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4620 struct mdt_thread_info *info;
4621 struct obd_device *obd;
4622 const char *dev = lustre_cfg_string(cfg, 0);
4623 const char *num = lustre_cfg_string(cfg, 2);
4624 struct lustre_mount_info *lmi = NULL;
4625 struct lustre_sb_info *lsi;
4627 struct seq_server_site *ss_site;
4628 const char *identity_upcall = "NONE";
4629 struct md_device *next;
4635 md_device_init(&m->mdt_md_dev, ldt);
4637 * Environment (env) might be missing mdt_thread_key values at that
4638 * point, if device is allocated when mdt_thread_key is in QUIESCENT
4641 * Usually device allocation path doesn't use module key values, but
4642 * mdt has to do a lot of work here, so allocate key value.
4644 rc = lu_env_refill((struct lu_env *)env);
4648 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4649 LASSERT(info != NULL);
4651 obd = class_name2obd(dev);
4652 LASSERT(obd != NULL);
4654 m->mdt_max_mdsize = MAX_MD_SIZE; /* 4 stripes */
4656 m->mdt_som_conf = 0;
4658 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
4659 lmi = server_get_mount(dev);
4661 CERROR("Cannot get mount info for %s!\n", dev);
4664 lsi = s2lsi(lmi->lmi_sb);
4665 /* CMD is supported only in IAM mode */
4667 node_id = simple_strtol(num, NULL, 10);
4668 obd->u.obt.obt_magic = OBT_MAGIC;
4671 rwlock_init(&m->mdt_sptlrpc_lock);
4672 sptlrpc_rule_set_init(&m->mdt_sptlrpc_rset);
4674 spin_lock_init(&m->mdt_ioepoch_lock);
4675 m->mdt_opts.mo_compat_resname = 0;
4676 m->mdt_opts.mo_mds_capa = 1;
4677 m->mdt_opts.mo_oss_capa = 1;
4678 m->mdt_capa_timeout = CAPA_TIMEOUT;
4679 m->mdt_capa_alg = CAPA_HMAC_ALG_SHA1;
4680 m->mdt_ck_timeout = CAPA_KEY_TIMEOUT;
4681 m->mdt_squash_uid = 0;
4682 m->mdt_squash_gid = 0;
4683 CFS_INIT_LIST_HEAD(&m->mdt_nosquash_nids);
4684 m->mdt_nosquash_str = NULL;
4685 m->mdt_nosquash_strlen = 0;
4686 init_rwsem(&m->mdt_squash_sem);
4687 spin_lock_init(&m->mdt_osfs_lock);
4688 m->mdt_osfs_age = cfs_time_shift_64(-1000);
4689 m->mdt_enable_remote_dir = 0;
4690 m->mdt_enable_remote_dir_gid = 0;
4692 m->mdt_md_dev.md_lu_dev.ld_ops = &mdt_lu_ops;
4693 m->mdt_md_dev.md_lu_dev.ld_obd = obd;
4694 /* set this lu_device to obd, because error handling need it */
4695 obd->obd_lu_dev = &m->mdt_md_dev.md_lu_dev;
4697 /* init the stack */
4698 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
4700 CERROR("Can't init device stack, rc %d\n", rc);
4704 s = m->mdt_md_dev.md_lu_dev.ld_site;
4705 ss_site = &m->mdt_seq_site;
4706 s->ld_seq_site = ss_site;
4709 /* set server index */
4710 ss_site->ss_node_id = node_id;
4712 /* failover is the default
4713 * FIXME: we do not failout mds0/mgs, which may cause some problems.
4714 * assumed whose ss_node_id == 0 XXX
4716 obd->obd_replayable = 1;
4717 /* No connection accepted until configurations will finish */
4718 obd->obd_no_conn = 1;
4720 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
4721 char *str = lustre_cfg_string(cfg, 4);
4722 if (strchr(str, 'n')) {
4723 CWARN("%s: recovery disabled\n", obd->obd_name);
4724 obd->obd_replayable = 0;
4728 rc = tgt_init(env, &m->mdt_lut, obd, m->mdt_bottom);
4730 GOTO(err_fini_stack, rc);
4732 rc = mdt_fld_init(env, obd->obd_name, m);
4736 rc = mdt_seq_init(env, obd->obd_name, m);
4738 GOTO(err_fini_fld, rc);
4740 snprintf(info->mti_u.ns_name, sizeof info->mti_u.ns_name,
4741 LUSTRE_MDT_NAME"-%p", m);
4742 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
4743 LDLM_NAMESPACE_SERVER,
4744 LDLM_NAMESPACE_GREEDY,
4746 if (m->mdt_namespace == NULL)
4747 GOTO(err_fini_seq, rc = -ENOMEM);
4749 m->mdt_namespace->ns_lvbp = m;
4750 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
4752 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
4753 /* set obd_namespace for compatibility with old code */
4754 obd->obd_namespace = m->mdt_namespace;
4756 cfs_timer_init(&m->mdt_ck_timer, mdt_ck_timer_callback, m);
4758 rc = mdt_ck_thread_start(m);
4760 GOTO(err_free_ns, rc);
4762 rc = mdt_fs_setup(env, m, obd, lsi);
4766 mdt_adapt_sptlrpc_conf(obd, 1);
4768 next = m->mdt_child;
4769 rc = next->md_ops->mdo_iocontrol(env, next, OBD_IOC_GET_MNTOPT, 0,
4772 GOTO(err_llog_cleanup, rc);
4774 if (mntopts & MNTOPT_USERXATTR)
4775 m->mdt_opts.mo_user_xattr = 1;
4777 m->mdt_opts.mo_user_xattr = 0;
4779 if (mntopts & MNTOPT_ACL)
4780 m->mdt_opts.mo_acl = 1;
4782 m->mdt_opts.mo_acl = 0;
4784 /* XXX: to support suppgid for ACL, we enable identity_upcall
4785 * by default, otherwise, maybe got unexpected -EACCESS. */
4786 if (m->mdt_opts.mo_acl)
4787 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
4789 m->mdt_identity_cache = upcall_cache_init(obd->obd_name,identity_upcall,
4790 &mdt_identity_upcall_cache_ops);
4791 if (IS_ERR(m->mdt_identity_cache)) {
4792 rc = PTR_ERR(m->mdt_identity_cache);
4793 m->mdt_identity_cache = NULL;
4794 GOTO(err_llog_cleanup, rc);
4797 rc = mdt_procfs_init(m, dev);
4799 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
4800 GOTO(err_recovery, rc);
4803 rc = mdt_quota_init(env, m, cfg);
4805 GOTO(err_procfs, rc);
4807 m->mdt_ldlm_client = &mdt2obd_dev(m)->obd_ldlm_client;
4808 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
4809 "mdt_ldlm_client", m->mdt_ldlm_client);
4811 ping_evictor_start();
4813 /* recovery will be started upon mdt_prepare()
4814 * when the whole stack is complete and ready
4815 * to serve the requests */
4817 mdt_init_capa_ctxt(env, m);
4819 /* Reduce the initial timeout on an MDS because it doesn't need such
4820 * a long timeout as an OST does. Adaptive timeouts will adjust this
4821 * value appropriately. */
4822 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
4823 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
4830 target_recovery_fini(obd);
4831 upcall_cache_cleanup(m->mdt_identity_cache);
4832 m->mdt_identity_cache = NULL;
4834 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4835 mdt_fs_cleanup(env, m);
4837 cfs_timer_disarm(&m->mdt_ck_timer);
4838 mdt_ck_thread_stop(m);
4840 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
4841 obd->obd_namespace = m->mdt_namespace = NULL;
4843 mdt_seq_fini(env, m);
4845 mdt_fld_fini(env, m);
4847 tgt_fini(env, &m->mdt_lut);
4849 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4852 server_put_mount(dev, lmi->lmi_mnt);
4856 /* For interoperability, the left element is old parameter, the right one
4857 * is the new version of the parameter, if some parameter is deprecated,
4858 * the new version should be set as NULL. */
4859 static struct cfg_interop_param mdt_interop_param[] = {
4860 { "mdt.group_upcall", NULL },
4861 { "mdt.quota_type", NULL },
4862 { "mdd.quota_type", NULL },
4863 { "mdt.rootsquash", "mdt.root_squash" },
4864 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
4868 /* used by MGS to process specific configurations */
4869 static int mdt_process_config(const struct lu_env *env,
4870 struct lu_device *d, struct lustre_cfg *cfg)
4872 struct mdt_device *m = mdt_dev(d);
4873 struct md_device *md_next = m->mdt_child;
4874 struct lu_device *next = md2lu_dev(md_next);
4878 switch (cfg->lcfg_command) {
4880 struct lprocfs_static_vars lvars;
4881 struct obd_device *obd = d->ld_obd;
4883 /* For interoperability */
4884 struct cfg_interop_param *ptr = NULL;
4885 struct lustre_cfg *old_cfg = NULL;
4888 param = lustre_cfg_string(cfg, 1);
4889 if (param == NULL) {
4890 CERROR("param is empty\n");
4895 ptr = class_find_old_param(param, mdt_interop_param);
4897 if (ptr->new_param == NULL) {
4899 CWARN("For interoperability, skip this %s."
4900 " It is obsolete.\n", ptr->old_param);
4904 CWARN("Found old param %s, changed it to %s.\n",
4905 ptr->old_param, ptr->new_param);
4908 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
4915 lprocfs_mdt_init_vars(&lvars);
4916 rc = class_process_proc_param(PARAM_MDT, lvars.obd_vars,
4918 if (rc > 0 || rc == -ENOSYS)
4919 /* we don't understand; pass it on */
4920 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4922 if (old_cfg != NULL)
4923 lustre_cfg_free(cfg);
4928 /* others are passed further */
4929 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4935 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
4936 const struct lu_object_header *hdr,
4937 struct lu_device *d)
4939 struct mdt_object *mo;
4943 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, CFS_ALLOC_IO);
4945 struct lu_object *o;
4946 struct lu_object_header *h;
4948 o = &mo->mot_obj.mo_lu;
4949 h = &mo->mot_header;
4950 lu_object_header_init(h);
4951 lu_object_init(o, h, d);
4952 lu_object_add_top(h, o);
4953 o->lo_ops = &mdt_obj_ops;
4954 mutex_init(&mo->mot_ioepoch_mutex);
4955 mutex_init(&mo->mot_lov_mutex);
4961 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
4962 const struct lu_object_conf *unused)
4964 struct mdt_device *d = mdt_dev(o->lo_dev);
4965 struct lu_device *under;
4966 struct lu_object *below;
4970 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
4971 PFID(lu_object_fid(o)));
4973 under = &d->mdt_child->md_lu_dev;
4974 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
4975 if (below != NULL) {
4976 lu_object_add(o, below);
4983 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
4985 struct mdt_object *mo = mdt_obj(o);
4986 struct lu_object_header *h;
4990 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
4991 PFID(lu_object_fid(o)));
4994 lu_object_header_fini(h);
4995 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
5000 static int mdt_object_print(const struct lu_env *env, void *cookie,
5001 lu_printer_t p, const struct lu_object *o)
5003 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
5004 return (*p)(env, cookie, LUSTRE_MDT_NAME"-object@%p(ioepoch="LPU64" "
5005 "flags="LPX64", epochcount=%d, writecount=%d)",
5006 mdto, mdto->mot_ioepoch, mdto->mot_flags,
5007 mdto->mot_ioepoch_count, mdto->mot_writecount);
5010 static int mdt_prepare(const struct lu_env *env,
5011 struct lu_device *pdev,
5012 struct lu_device *cdev)
5014 struct mdt_device *mdt = mdt_dev(cdev);
5015 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
5016 struct obd_device *obd = cdev->ld_obd;
5023 rc = next->ld_ops->ldo_prepare(env, cdev, next);
5027 rc = mdt_llog_ctxt_clone(env, mdt, LLOG_CHANGELOG_ORIG_CTXT);
5031 rc = mdt->mdt_child->md_ops->mdo_iocontrol(env, mdt->mdt_child,
5032 OBD_IOC_START_LFSCK,
5035 CWARN("Fail to auto trigger paused LFSCK.\n");
5037 if (mdt->mdt_seq_site.ss_node_id == 0) {
5038 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
5039 &mdt->mdt_md_root_fid);
5043 LASSERT(!test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
5044 target_recovery_init(&mdt->mdt_lut, mdt_recovery_handle);
5045 set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
5046 LASSERT(obd->obd_no_conn);
5047 spin_lock(&obd->obd_dev_lock);
5048 obd->obd_no_conn = 0;
5049 spin_unlock(&obd->obd_dev_lock);
5051 if (obd->obd_recovering == 0)
5052 mdt_postrecov(env, mdt);
5057 const struct lu_device_operations mdt_lu_ops = {
5058 .ldo_object_alloc = mdt_object_alloc,
5059 .ldo_process_config = mdt_process_config,
5060 .ldo_prepare = mdt_prepare,
5063 static const struct lu_object_operations mdt_obj_ops = {
5064 .loo_object_init = mdt_object_init,
5065 .loo_object_free = mdt_object_free,
5066 .loo_object_print = mdt_object_print
5069 static int mdt_obd_set_info_async(const struct lu_env *env,
5070 struct obd_export *exp,
5071 __u32 keylen, void *key,
5072 __u32 vallen, void *val,
5073 struct ptlrpc_request_set *set)
5075 struct obd_device *obd = exp->exp_obd;
5081 if (KEY_IS(KEY_SPTLRPC_CONF)) {
5082 rc = mdt_adapt_sptlrpc_conf(obd, 0);
5090 * Match client and server connection feature flags.
5092 * Compute the compatibility flags for a connection request based on
5093 * features mutually supported by client and server.
5095 * The obd_export::exp_connect_data.ocd_connect_flags field in \a exp
5096 * must not be updated here, otherwise a partially initialized value may
5097 * be exposed. After the connection request is successfully processed,
5098 * the top-level MDT connect request handler atomically updates the export
5099 * connect flags from the obd_connect_data::ocd_connect_flags field of the
5100 * reply. \see mdt_connect().
5102 * \param exp the obd_export associated with this client/target pair
5103 * \param mdt the target device for the connection
5104 * \param data stores data for this connect request
5107 * \retval -EPROTO \a data unexpectedly has zero obd_connect_data::ocd_brw_size
5108 * \retval -EBADE client and server feature requirements are incompatible
5110 static int mdt_connect_internal(struct obd_export *exp,
5111 struct mdt_device *mdt,
5112 struct obd_connect_data *data)
5114 LASSERT(data != NULL);
5116 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
5117 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
5119 /* If no known bits (which should not happen, probably,
5120 as everybody should support LOOKUP and UPDATE bits at least)
5121 revert to compat mode with plain locks. */
5122 if (!data->ocd_ibits_known &&
5123 data->ocd_connect_flags & OBD_CONNECT_IBITS)
5124 data->ocd_connect_flags &= ~OBD_CONNECT_IBITS;
5126 if (!mdt->mdt_opts.mo_acl)
5127 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
5129 if (!mdt->mdt_opts.mo_user_xattr)
5130 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
5132 if (!mdt->mdt_som_conf)
5133 data->ocd_connect_flags &= ~OBD_CONNECT_SOM;
5135 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
5136 data->ocd_brw_size = min(data->ocd_brw_size,
5137 (__u32)MD_MAX_BRW_SIZE);
5138 if (data->ocd_brw_size == 0) {
5139 CERROR("%s: cli %s/%p ocd_connect_flags: "LPX64
5140 " ocd_version: %x ocd_grant: %d "
5141 "ocd_index: %u ocd_brw_size is "
5142 "unexpectedly zero, network data "
5143 "corruption? Refusing connection of this"
5145 exp->exp_obd->obd_name,
5146 exp->exp_client_uuid.uuid,
5147 exp, data->ocd_connect_flags, data->ocd_version,
5148 data->ocd_grant, data->ocd_index);
5153 /* NB: Disregard the rule against updating
5154 * exp_connect_data.ocd_connect_flags in this case, since
5155 * tgt_client_new() needs to know if this is a lightweight
5156 * connection, and it is safe to expose this flag before
5157 * connection processing completes. */
5158 if (data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT) {
5159 spin_lock(&exp->exp_lock);
5160 *exp_connect_flags_ptr(exp) |= OBD_CONNECT_LIGHTWEIGHT;
5161 spin_unlock(&exp->exp_lock);
5164 data->ocd_version = LUSTRE_VERSION_CODE;
5165 exp->exp_connect_data = *data;
5166 exp->exp_mdt_data.med_ibits_known = data->ocd_ibits_known;
5168 if ((data->ocd_connect_flags & OBD_CONNECT_FID) == 0) {
5169 CWARN("%s: MDS requires FID support, but client not\n",
5170 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
5174 if (mdt->mdt_som_conf &&
5175 !(data->ocd_connect_flags & (OBD_CONNECT_LIGHTWEIGHT |
5176 OBD_CONNECT_MDS_MDS |
5177 OBD_CONNECT_SOM))) {
5178 CWARN("%s: MDS has SOM enabled, but client does not support "
5179 "it\n", mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
5183 if (data->ocd_connect_flags & OBD_CONNECT_PINGLESS) {
5184 if (suppress_pings) {
5185 spin_lock(&exp->exp_obd->obd_dev_lock);
5186 list_del_init(&exp->exp_obd_chain_timed);
5187 spin_unlock(&exp->exp_obd->obd_dev_lock);
5189 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
5196 static int mdt_connect_check_sptlrpc(struct mdt_device *mdt,
5197 struct obd_export *exp,
5198 struct ptlrpc_request *req)
5200 struct sptlrpc_flavor flvr;
5203 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
5204 read_lock(&mdt->mdt_sptlrpc_lock);
5205 sptlrpc_target_choose_flavor(&mdt->mdt_sptlrpc_rset,
5209 read_unlock(&mdt->mdt_sptlrpc_lock);
5211 spin_lock(&exp->exp_lock);
5213 exp->exp_sp_peer = req->rq_sp_from;
5214 exp->exp_flvr = flvr;
5216 if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
5217 exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
5218 CERROR("unauthorized rpc flavor %x from %s, "
5219 "expect %x\n", req->rq_flvr.sf_rpc,
5220 libcfs_nid2str(req->rq_peer.nid),
5221 exp->exp_flvr.sf_rpc);
5225 spin_unlock(&exp->exp_lock);
5227 if (exp->exp_sp_peer != req->rq_sp_from) {
5228 CERROR("RPC source %s doesn't match %s\n",
5229 sptlrpc_part2name(req->rq_sp_from),
5230 sptlrpc_part2name(exp->exp_sp_peer));
5233 rc = sptlrpc_target_export_check(exp, req);
5240 /* mds_connect copy */
5241 static int mdt_obd_connect(const struct lu_env *env,
5242 struct obd_export **exp, struct obd_device *obd,
5243 struct obd_uuid *cluuid,
5244 struct obd_connect_data *data,
5247 struct mdt_thread_info *info;
5248 struct obd_export *lexp;
5249 struct lustre_handle conn = { 0 };
5250 struct mdt_device *mdt;
5251 struct ptlrpc_request *req;
5255 LASSERT(env != NULL);
5256 if (!exp || !obd || !cluuid)
5259 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5260 req = info->mti_pill->rc_req;
5261 mdt = mdt_dev(obd->obd_lu_dev);
5264 * first, check whether the stack is ready to handle requests
5265 * XXX: probably not very appropriate method is used now
5266 * at some point we should find a better one
5268 if (!test_bit(MDT_FL_SYNCED, &mdt->mdt_state) &&
5269 !(data->ocd_connect_flags & OBD_CONNECT_LIGHTWEIGHT)) {
5270 rc = obd_health_check(env, mdt->mdt_child_exp->exp_obd);
5273 set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
5276 rc = class_connect(&conn, obd, cluuid);
5280 lexp = class_conn2export(&conn);
5281 LASSERT(lexp != NULL);
5283 rc = mdt_connect_check_sptlrpc(mdt, lexp, req);
5287 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_RCVG_FLAG))
5288 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECOVERING);
5290 rc = mdt_connect_internal(lexp, mdt, data);
5292 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
5295 info->mti_exp = lexp;
5296 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5297 rc = tgt_client_new(env, lexp);
5299 mdt_export_stats_init(obd, lexp, localdata);
5304 class_disconnect(lexp);
5313 static int mdt_obd_reconnect(const struct lu_env *env,
5314 struct obd_export *exp, struct obd_device *obd,
5315 struct obd_uuid *cluuid,
5316 struct obd_connect_data *data,
5319 struct mdt_thread_info *info;
5320 struct mdt_device *mdt;
5321 struct ptlrpc_request *req;
5325 if (exp == NULL || obd == NULL || cluuid == NULL)
5328 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5329 req = info->mti_pill->rc_req;
5330 mdt = mdt_dev(obd->obd_lu_dev);
5332 rc = mdt_connect_check_sptlrpc(mdt, exp, req);
5336 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
5338 mdt_export_stats_init(obd, exp, localdata);
5343 static int mdt_export_cleanup(struct obd_export *exp)
5345 struct mdt_export_data *med = &exp->exp_mdt_data;
5346 struct obd_device *obd = exp->exp_obd;
5347 struct mdt_device *mdt;
5348 struct mdt_thread_info *info;
5350 CFS_LIST_HEAD(closing_list);
5351 struct mdt_file_data *mfd, *n;
5355 spin_lock(&med->med_open_lock);
5356 while (!cfs_list_empty(&med->med_open_head)) {
5357 cfs_list_t *tmp = med->med_open_head.next;
5358 mfd = cfs_list_entry(tmp, struct mdt_file_data, mfd_list);
5360 /* Remove mfd handle so it can't be found again.
5361 * We are consuming the mfd_list reference here. */
5362 class_handle_unhash(&mfd->mfd_handle);
5363 cfs_list_move_tail(&mfd->mfd_list, &closing_list);
5365 spin_unlock(&med->med_open_lock);
5366 mdt = mdt_dev(obd->obd_lu_dev);
5367 LASSERT(mdt != NULL);
5369 rc = lu_env_init(&env, LCT_MD_THREAD);
5373 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5374 LASSERT(info != NULL);
5375 memset(info, 0, sizeof *info);
5376 info->mti_env = &env;
5377 info->mti_mdt = mdt;
5378 info->mti_exp = exp;
5380 if (!cfs_list_empty(&closing_list)) {
5381 struct md_attr *ma = &info->mti_attr;
5383 /* Close any open files (which may also cause orphan unlinking). */
5384 cfs_list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
5385 cfs_list_del_init(&mfd->mfd_list);
5386 ma->ma_need = ma->ma_valid = 0;
5387 /* Don't unlink orphan on failover umount, LU-184 */
5388 if (exp->exp_flags & OBD_OPT_FAILOVER) {
5389 ma->ma_valid = MA_FLAGS;
5390 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
5392 mdt_mfd_close(info, mfd);
5395 info->mti_mdt = NULL;
5396 /* cleanup client slot early */
5397 /* Do not erase record for recoverable client. */
5398 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
5399 tgt_client_del(&env, exp);
5405 static int mdt_obd_disconnect(struct obd_export *exp)
5411 class_export_get(exp);
5413 rc = server_disconnect_export(exp);
5415 CDEBUG(D_IOCTL, "server disconnect error: %d\n", rc);
5417 rc = mdt_export_cleanup(exp);
5418 class_export_put(exp);
5422 /* FIXME: Can we avoid using these two interfaces? */
5423 static int mdt_init_export(struct obd_export *exp)
5425 struct mdt_export_data *med = &exp->exp_mdt_data;
5429 CFS_INIT_LIST_HEAD(&med->med_open_head);
5430 spin_lock_init(&med->med_open_lock);
5431 mutex_init(&med->med_idmap_mutex);
5432 med->med_idmap = NULL;
5433 spin_lock(&exp->exp_lock);
5434 exp->exp_connecting = 1;
5435 spin_unlock(&exp->exp_lock);
5437 /* self-export doesn't need client data and ldlm initialization */
5438 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5439 &exp->exp_client_uuid)))
5442 rc = tgt_client_alloc(exp);
5446 rc = ldlm_init_export(exp);
5453 tgt_client_free(exp);
5455 CERROR("%s: Failed to initialize export: rc = %d\n",
5456 exp->exp_obd->obd_name, rc);
5460 static int mdt_destroy_export(struct obd_export *exp)
5464 if (exp_connect_rmtclient(exp))
5465 mdt_cleanup_idmap(&exp->exp_mdt_data);
5467 target_destroy_export(exp);
5468 /* destroy can be called from failed obd_setup, so
5469 * checking uuid is safer than obd_self_export */
5470 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5471 &exp->exp_client_uuid)))
5474 ldlm_destroy_export(exp);
5475 tgt_client_free(exp);
5477 LASSERT(cfs_list_empty(&exp->exp_outstanding_replies));
5478 LASSERT(cfs_list_empty(&exp->exp_mdt_data.med_open_head));
5483 /** The maximum depth that fid2path() will search.
5484 * This is limited only because we want to store the fids for
5485 * historical path lookup purposes.
5487 #define MAX_PATH_DEPTH 100
5489 /** mdt_path() lookup structure. */
5490 struct path_lookup_info {
5491 __u64 pli_recno; /**< history point */
5492 __u64 pli_currec; /**< current record */
5493 struct lu_fid pli_fid;
5494 struct lu_fid pli_fids[MAX_PATH_DEPTH]; /**< path, in fids */
5495 struct mdt_object *pli_mdt_obj;
5496 char *pli_path; /**< full path */
5498 int pli_linkno; /**< which hardlink to follow */
5499 int pli_fidcount; /**< number of \a pli_fids */
5502 static int mdt_links_read(struct mdt_thread_info *info,
5503 struct mdt_object *mdt_obj, struct linkea_data *ldata)
5507 LASSERT(ldata->ld_buf->lb_buf != NULL);
5509 if (!mdt_object_exists(mdt_obj))
5512 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5513 ldata->ld_buf, XATTR_NAME_LINK);
5514 if (rc == -ERANGE) {
5515 /* Buf was too small, figure out what we need. */
5516 lu_buf_free(ldata->ld_buf);
5517 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5518 ldata->ld_buf, XATTR_NAME_LINK);
5521 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
5522 if (ldata->ld_buf->lb_buf == NULL)
5524 rc = mo_xattr_get(info->mti_env, mdt_object_child(mdt_obj),
5525 ldata->ld_buf, XATTR_NAME_LINK);
5535 static int mdt_path_current(struct mdt_thread_info *info,
5536 struct path_lookup_info *pli)
5538 struct mdt_device *mdt = info->mti_mdt;
5539 struct mdt_object *mdt_obj;
5540 struct link_ea_header *leh;
5541 struct link_ea_entry *lee;
5542 struct lu_name *tmpname = &info->mti_name;
5543 struct lu_fid *tmpfid = &info->mti_tmp_fid1;
5544 struct lu_buf *buf = &info->mti_big_buf;
5547 struct linkea_data ldata = { 0 };
5551 /* temp buffer for path element, the buffer will be finally freed
5552 * in mdt_thread_info_fini */
5553 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
5554 if (buf->lb_buf == NULL)
5558 ptr = pli->pli_path + pli->pli_pathlen - 1;
5561 pli->pli_fidcount = 0;
5562 pli->pli_fids[0] = *(struct lu_fid *)mdt_object_fid(pli->pli_mdt_obj);
5564 /* root FID only exists on MDT0, and fid2path should also ends at MDT0,
5565 * so checking root_fid can only happen on MDT0. */
5566 while (!lu_fid_eq(&mdt->mdt_md_root_fid,
5567 &pli->pli_fids[pli->pli_fidcount])) {
5568 mdt_obj = mdt_object_find(info->mti_env, mdt,
5569 &pli->pli_fids[pli->pli_fidcount]);
5570 if (IS_ERR(mdt_obj))
5571 GOTO(out, rc = PTR_ERR(mdt_obj));
5572 if (mdt_object_remote(mdt_obj)) {
5573 mdt_object_put(info->mti_env, mdt_obj);
5574 GOTO(remote_out, rc = -EREMOTE);
5576 if (!mdt_object_exists(mdt_obj)) {
5577 mdt_object_put(info->mti_env, mdt_obj);
5578 GOTO(out, rc = -ENOENT);
5581 rc = mdt_links_read(info, mdt_obj, &ldata);
5582 mdt_object_put(info->mti_env, mdt_obj);
5584 GOTO(out, rc = PTR_ERR(buf));
5587 lee = (struct link_ea_entry *)(leh + 1); /* link #0 */
5588 linkea_entry_unpack(lee, &reclen, tmpname, tmpfid);
5589 /* If set, use link #linkno for path lookup, otherwise use
5590 link #0. Only do this for the final path element. */
5591 if ((pli->pli_fidcount == 0) &&
5592 (pli->pli_linkno < leh->leh_reccount)) {
5594 for (count = 0; count < pli->pli_linkno; count++) {
5595 lee = (struct link_ea_entry *)
5596 ((char *)lee + reclen);
5597 linkea_entry_unpack(lee, &reclen, tmpname,
5600 if (pli->pli_linkno < leh->leh_reccount - 1)
5601 /* indicate to user there are more links */
5605 /* Pack the name in the end of the buffer */
5606 ptr -= tmpname->ln_namelen;
5607 if (ptr - 1 <= pli->pli_path)
5608 GOTO(out, rc = -EOVERFLOW);
5609 strncpy(ptr, tmpname->ln_name, tmpname->ln_namelen);
5612 /* Store the parent fid for historic lookup */
5613 if (++pli->pli_fidcount >= MAX_PATH_DEPTH)
5614 GOTO(out, rc = -EOVERFLOW);
5615 pli->pli_fids[pli->pli_fidcount] = *tmpfid;
5619 ptr++; /* skip leading / */
5620 memmove(pli->pli_path, ptr, pli->pli_path + pli->pli_pathlen - ptr);
5627 /* Returns the full path to this fid, as of changelog record recno. */
5628 static int mdt_path(struct mdt_thread_info *info, struct mdt_object *obj,
5629 char *path, int pathlen, __u64 *recno, int *linkno,
5632 struct mdt_device *mdt = info->mti_mdt;
5633 struct path_lookup_info *pli;
5641 if (lu_fid_eq(&mdt->mdt_md_root_fid, mdt_object_fid(obj))) {
5650 pli->pli_mdt_obj = obj;
5651 pli->pli_recno = *recno;
5652 pli->pli_path = path;
5653 pli->pli_pathlen = pathlen;
5654 pli->pli_linkno = *linkno;
5656 /* Retry multiple times in case file is being moved */
5657 while (tries-- && rc == -EAGAIN)
5658 rc = mdt_path_current(info, pli);
5660 /* return the last resolved fids to the client, so the client will
5661 * build the left path on another MDT for remote object */
5662 *fid = pli->pli_fids[pli->pli_fidcount];
5664 *recno = pli->pli_currec;
5665 /* Return next link index to caller */
5666 *linkno = pli->pli_linkno;
5673 static int mdt_fid2path(struct mdt_thread_info *info,
5674 struct getinfo_fid2path *fp)
5676 struct mdt_device *mdt = info->mti_mdt;
5677 struct obd_device *obd = mdt2obd_dev(mdt);
5678 struct mdt_object *obj;
5682 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
5683 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
5685 if (!fid_is_sane(&fp->gf_fid))
5688 if (!fid_is_client_mdt_visible(&fp->gf_fid)) {
5689 CWARN("%s: "DFID" is invalid, sequence should be "
5690 ">= "LPX64"\n", obd->obd_name,
5691 PFID(&fp->gf_fid), (__u64)FID_SEQ_NORMAL);
5695 obj = mdt_object_find(info->mti_env, mdt, &fp->gf_fid);
5696 if (obj == NULL || IS_ERR(obj)) {
5697 CDEBUG(D_IOCTL, "no object "DFID": %ld\n", PFID(&fp->gf_fid),
5702 if (mdt_object_remote(obj))
5704 else if (!mdt_object_exists(obj))
5710 mdt_object_put(info->mti_env, obj);
5711 CDEBUG(D_IOCTL, "nonlocal object "DFID": %d\n",
5712 PFID(&fp->gf_fid), rc);
5716 rc = mdt_path(info, obj, fp->gf_path, fp->gf_pathlen, &fp->gf_recno,
5717 &fp->gf_linkno, &fp->gf_fid);
5719 CDEBUG(D_INFO, "fid "DFID", path %s recno "LPX64" linkno %u\n",
5720 PFID(&fp->gf_fid), fp->gf_path, fp->gf_recno, fp->gf_linkno);
5722 mdt_object_put(info->mti_env, obj);
5727 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key,
5728 void *val, int vallen)
5730 struct getinfo_fid2path *fpout, *fpin;
5733 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
5736 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
5737 lustre_swab_fid2path(fpin);
5739 memcpy(fpout, fpin, sizeof(*fpin));
5740 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
5743 rc = mdt_fid2path(info, fpout);
5747 int mdt_get_info(struct mdt_thread_info *info)
5749 struct ptlrpc_request *req = mdt_info_req(info);
5757 key = req_capsule_client_get(info->mti_pill, &RMF_GETINFO_KEY);
5759 CDEBUG(D_IOCTL, "No GETINFO key");
5762 keylen = req_capsule_get_size(info->mti_pill, &RMF_GETINFO_KEY,
5765 vallen = req_capsule_client_get(info->mti_pill, &RMF_GETINFO_VALLEN);
5766 if (vallen == NULL) {
5767 CDEBUG(D_IOCTL, "Unable to get RMF_GETINFO_VALLEN buffer");
5771 req_capsule_set_size(info->mti_pill, &RMF_GETINFO_VAL, RCL_SERVER,
5773 rc = req_capsule_server_pack(info->mti_pill);
5774 valout = req_capsule_server_get(info->mti_pill, &RMF_GETINFO_VAL);
5775 if (valout == NULL) {
5776 CDEBUG(D_IOCTL, "Unable to get get-info RPC out buffer");
5780 if (KEY_IS(KEY_FID2PATH))
5781 rc = mdt_rpc_fid2path(info, key, valout, *vallen);
5785 lustre_msg_set_status(req->rq_repmsg, rc);
5790 /* Pass the ioc down */
5791 static int mdt_ioc_child(struct lu_env *env, struct mdt_device *mdt,
5792 unsigned int cmd, int len, void *data)
5794 struct lu_context ioctl_session;
5795 struct md_device *next = mdt->mdt_child;
5799 rc = lu_context_init(&ioctl_session, LCT_SESSION);
5802 ioctl_session.lc_thread = (struct ptlrpc_thread *)cfs_current();
5803 lu_context_enter(&ioctl_session);
5804 env->le_ses = &ioctl_session;
5806 LASSERT(next->md_ops->mdo_iocontrol);
5807 rc = next->md_ops->mdo_iocontrol(env, next, cmd, len, data);
5809 lu_context_exit(&ioctl_session);
5810 lu_context_fini(&ioctl_session);
5814 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
5816 struct obd_ioctl_data *data = karg;
5817 struct lu_fid *fid = (struct lu_fid *)data->ioc_inlbuf1;
5819 struct mdt_object *obj;
5820 struct mdt_lock_handle *lh;
5824 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
5825 if (!fid_is_sane(fid))
5828 lh = &mti->mti_lh[MDT_LH_PARENT];
5829 mdt_lock_reg_init(lh, LCK_CR);
5831 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
5833 RETURN(PTR_ERR(obj));
5835 if (mdt_object_remote(obj)) {
5838 * before calling version get the correct MDS should be
5839 * fid, this is error to find remote object here
5841 CERROR("nonlocal object "DFID"\n", PFID(fid));
5842 } else if (!mdt_object_exists(obj)) {
5843 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
5846 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
5847 *(__u64 *)data->ioc_inlbuf2 = version;
5850 mdt_object_unlock_put(mti, obj, lh, 1);
5854 /* ioctls on obd dev */
5855 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
5856 void *karg, void *uarg)
5859 struct obd_device *obd = exp->exp_obd;
5860 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
5861 struct dt_device *dt = mdt->mdt_bottom;
5865 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
5866 rc = lu_env_init(&env, LCT_MD_THREAD);
5872 rc = mdt_device_sync(&env, mdt);
5874 case OBD_IOC_SET_READONLY:
5875 rc = dt->dd_ops->dt_ro(&env, dt);
5877 case OBD_IOC_ABORT_RECOVERY:
5878 CERROR("Aborting recovery for device %s\n", obd->obd_name);
5879 target_stop_recovery_thread(obd);
5882 case OBD_IOC_CHANGELOG_REG:
5883 case OBD_IOC_CHANGELOG_DEREG:
5884 case OBD_IOC_CHANGELOG_CLEAR:
5885 rc = mdt_ioc_child(&env, mdt, cmd, len, karg);
5887 case OBD_IOC_START_LFSCK:
5888 case OBD_IOC_STOP_LFSCK: {
5889 struct md_device *next = mdt->mdt_child;
5890 struct obd_ioctl_data *data = karg;
5892 if (unlikely(data == NULL)) {
5897 rc = next->md_ops->mdo_iocontrol(&env, next, cmd,
5902 case OBD_IOC_GET_OBJ_VERSION: {
5903 struct mdt_thread_info *mti;
5904 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5905 memset(mti, 0, sizeof *mti);
5906 mti->mti_env = &env;
5910 rc = mdt_ioc_version_get(mti, karg);
5914 CERROR("Not supported cmd = %d for device %s\n",
5915 cmd, obd->obd_name);
5923 int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
5925 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
5929 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
5933 int mdt_obd_postrecov(struct obd_device *obd)
5938 rc = lu_env_init(&env, LCT_MD_THREAD);
5941 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
5946 static struct obd_ops mdt_obd_device_ops = {
5947 .o_owner = THIS_MODULE,
5948 .o_set_info_async = mdt_obd_set_info_async,
5949 .o_connect = mdt_obd_connect,
5950 .o_reconnect = mdt_obd_reconnect,
5951 .o_disconnect = mdt_obd_disconnect,
5952 .o_init_export = mdt_init_export,
5953 .o_destroy_export = mdt_destroy_export,
5954 .o_iocontrol = mdt_iocontrol,
5955 .o_postrecov = mdt_obd_postrecov,
5958 static struct lu_device* mdt_device_fini(const struct lu_env *env,
5959 struct lu_device *d)
5961 struct mdt_device *m = mdt_dev(d);
5968 static struct lu_device *mdt_device_free(const struct lu_env *env,
5969 struct lu_device *d)
5971 struct mdt_device *m = mdt_dev(d);
5974 md_device_fini(&m->mdt_md_dev);
5979 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
5980 struct lu_device_type *t,
5981 struct lustre_cfg *cfg)
5983 struct lu_device *l;
5984 struct mdt_device *m;
5990 l = &m->mdt_md_dev.md_lu_dev;
5991 rc = mdt_init0(env, m, t, cfg);
5993 mdt_device_free(env, l);
5998 l = ERR_PTR(-ENOMEM);
6002 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
6003 LU_KEY_INIT(mdt, struct mdt_thread_info);
6005 static void mdt_key_fini(const struct lu_context *ctx,
6006 struct lu_context_key *key, void* data)
6008 struct mdt_thread_info *info = data;
6010 if (info->mti_big_lmm) {
6011 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
6012 info->mti_big_lmm = NULL;
6013 info->mti_big_lmmsize = 0;
6018 /* context key: mdt_thread_key */
6019 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
6021 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info)
6023 return lu_ucred(info->mti_env);
6026 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info)
6028 return lu_ucred_check(info->mti_env);
6032 * Enable/disable COS (Commit On Sharing).
6034 * Set/Clear the COS flag in mdt options.
6036 * \param mdt mdt device
6037 * \param val 0 disables COS, other values enable COS
6039 void mdt_enable_cos(struct mdt_device *mdt, int val)
6044 mdt->mdt_opts.mo_cos = !!val;
6045 rc = lu_env_init(&env, LCT_LOCAL);
6046 if (unlikely(rc != 0)) {
6047 CWARN("lu_env initialization failed with rc = %d,"
6048 "cannot sync\n", rc);
6051 mdt_device_sync(&env, mdt);
6056 * Check COS (Commit On Sharing) status.
6058 * Return COS flag status.
6060 * \param mdt mdt device
6062 int mdt_cos_is_enabled(struct mdt_device *mdt)
6064 return mdt->mdt_opts.mo_cos != 0;
6067 static struct lu_device_type_operations mdt_device_type_ops = {
6068 .ldto_device_alloc = mdt_device_alloc,
6069 .ldto_device_free = mdt_device_free,
6070 .ldto_device_fini = mdt_device_fini
6073 static struct lu_device_type mdt_device_type = {
6074 .ldt_tags = LU_DEVICE_MD,
6075 .ldt_name = LUSTRE_MDT_NAME,
6076 .ldt_ops = &mdt_device_type_ops,
6077 .ldt_ctx_tags = LCT_MD_THREAD
6080 static int __init mdt_mod_init(void)
6082 struct lprocfs_static_vars lvars;
6085 rc = lu_kmem_init(mdt_caches);
6089 rc = mds_mod_init();
6093 lprocfs_mdt_init_vars(&lvars);
6094 rc = class_register_type(&mdt_obd_device_ops, NULL,
6095 lvars.module_vars, LUSTRE_MDT_NAME,
6101 lu_kmem_fini(mdt_caches);
6108 static void __exit mdt_mod_exit(void)
6110 class_unregister_type(LUSTRE_MDT_NAME);
6112 lu_kmem_fini(mdt_caches);
6115 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
6116 MODULE_DESCRIPTION("Lustre Metadata Target ("LUSTRE_MDT_NAME")");
6117 MODULE_LICENSE("GPL");
6119 cfs_module(mdt, LUSTRE_VERSION_STRING, mdt_mod_init, mdt_mod_exit);