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) 2011, 2012, Whamcloud, Inc.
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>
72 mdl_mode_t mdt_mdl_lock_modes[] = {
73 [LCK_MINMODE] = MDL_MINMODE,
80 [LCK_GROUP] = MDL_GROUP
83 ldlm_mode_t mdt_dlm_lock_modes[] = {
84 [MDL_MINMODE] = LCK_MINMODE,
91 [MDL_GROUP] = LCK_GROUP
95 * Initialized in mdt_mod_init().
97 static unsigned long mdt_num_threads;
98 CFS_MODULE_PARM(mdt_num_threads, "ul", ulong, 0444,
99 "number of MDS service threads to start "
100 "(deprecated in favor of mds_num_threads)");
102 static unsigned long mds_num_threads;
103 CFS_MODULE_PARM(mds_num_threads, "ul", ulong, 0444,
104 "number of MDS service threads to start");
106 static char *mds_num_cpts;
107 CFS_MODULE_PARM(mds_num_cpts, "c", charp, 0444,
108 "CPU partitions MDS threads should run on");
110 static unsigned long mds_rdpg_num_threads;
111 CFS_MODULE_PARM(mds_rdpg_num_threads, "ul", ulong, 0444,
112 "number of MDS readpage service threads to start");
114 static char *mds_rdpg_num_cpts;
115 CFS_MODULE_PARM(mds_rdpg_num_cpts, "c", charp, 0444,
116 "CPU partitions MDS readpage threads should run on");
118 /* NB: these two should be removed along with setattr service in the future */
119 static unsigned long mds_attr_num_threads;
120 CFS_MODULE_PARM(mds_attr_num_threads, "ul", ulong, 0444,
121 "number of MDS setattr service threads to start");
123 static char *mds_attr_num_cpts;
124 CFS_MODULE_PARM(mds_attr_num_cpts, "c", charp, 0444,
125 "CPU partitions MDS setattr threads should run on");
127 /* ptlrpc request handler for MDT. All handlers are
128 * grouped into several slices - struct mdt_opc_slice,
129 * and stored in an array - mdt_handlers[].
132 /* The name of this handler. */
134 /* Fail id for this handler, checked at the beginning of this handler*/
136 /* Operation code for this handler */
138 /* flags are listed in enum mdt_handler_flags below. */
140 /* The actual handler function to execute. */
141 int (*mh_act)(struct mdt_thread_info *info);
142 /* Request format for this request. */
143 const struct req_format *mh_fmt;
146 enum mdt_handler_flags {
148 * struct mdt_body is passed in the incoming message, and object
149 * identified by this fid exists on disk.
151 * "habeo corpus" == "I have a body"
153 HABEO_CORPUS = (1 << 0),
155 * struct ldlm_request is passed in the incoming message.
157 * "habeo clavis" == "I have a key"
159 HABEO_CLAVIS = (1 << 1),
161 * this request has fixed reply format, so that reply message can be
162 * packed by generic code.
164 * "habeo refero" == "I have a reply"
166 HABEO_REFERO = (1 << 2),
168 * this request will modify something, so check whether the filesystem
169 * is readonly or not, then return -EROFS to client asap if necessary.
171 * "mutabor" == "I shall modify"
176 struct mdt_opc_slice {
179 struct mdt_handler *mos_hs;
182 static struct mdt_opc_slice mdt_regular_handlers[];
183 static struct mdt_opc_slice mdt_readpage_handlers[];
184 static struct mdt_opc_slice mdt_xmds_handlers[];
185 static struct mdt_opc_slice mdt_seq_handlers[];
186 static struct mdt_opc_slice mdt_fld_handlers[];
188 static struct mdt_device *mdt_dev(struct lu_device *d);
189 static int mdt_regular_handle(struct ptlrpc_request *req);
190 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
191 static int mdt_fid2path(const struct lu_env *env, struct mdt_device *mdt,
192 struct getinfo_fid2path *fp);
194 static const struct lu_object_operations mdt_obj_ops;
196 /* Slab for MDT object allocation */
197 static cfs_mem_cache_t *mdt_object_kmem;
199 static struct lu_kmem_descr mdt_caches[] = {
201 .ckd_cache = &mdt_object_kmem,
202 .ckd_name = "mdt_obj",
203 .ckd_size = sizeof(struct mdt_object)
210 int mdt_get_disposition(struct ldlm_reply *rep, int flag)
214 return (rep->lock_policy_res1 & flag);
217 void mdt_clear_disposition(struct mdt_thread_info *info,
218 struct ldlm_reply *rep, int flag)
221 info->mti_opdata &= ~flag;
223 rep->lock_policy_res1 &= ~flag;
226 void mdt_set_disposition(struct mdt_thread_info *info,
227 struct ldlm_reply *rep, int flag)
230 info->mti_opdata |= flag;
232 rep->lock_policy_res1 |= flag;
235 void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm)
237 lh->mlh_pdo_hash = 0;
238 lh->mlh_reg_mode = lm;
239 lh->mlh_type = MDT_REG_LOCK;
242 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, ldlm_mode_t lm,
243 const char *name, int namelen)
245 lh->mlh_reg_mode = lm;
246 lh->mlh_type = MDT_PDO_LOCK;
248 if (name != NULL && (name[0] != '\0')) {
249 LASSERT(namelen > 0);
250 lh->mlh_pdo_hash = full_name_hash(name, namelen);
252 LASSERT(namelen == 0);
253 lh->mlh_pdo_hash = 0ull;
257 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
258 struct mdt_lock_handle *lh)
264 * Any dir access needs couple of locks:
266 * 1) on part of dir we gonna take lookup/modify;
268 * 2) on whole dir to protect it from concurrent splitting and/or to
269 * flush client's cache for readdir().
271 * so, for a given mode and object this routine decides what lock mode
272 * to use for lock #2:
274 * 1) if caller's gonna lookup in dir then we need to protect dir from
275 * being splitted only - LCK_CR
277 * 2) if caller's gonna modify dir then we need to protect dir from
278 * being splitted and to flush cache - LCK_CW
280 * 3) if caller's gonna modify dir and that dir seems ready for
281 * splitting then we need to protect it from any type of access
282 * (lookup/modify/split) - LCK_EX --bzzz
285 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
286 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
289 * Ask underlaying level its opinion about preferable PDO lock mode
290 * having access type passed as regular lock mode:
292 * - MDL_MINMODE means that lower layer does not want to specify lock
295 * - MDL_NL means that no PDO lock should be taken. This is used in some
296 * cases. Say, for non-splittable directories no need to use PDO locks
299 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
300 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
302 if (mode != MDL_MINMODE) {
303 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
306 * Lower layer does not want to specify locking mode. We do it
307 * our selves. No special protection is needed, just flush
308 * client's cache on modification and allow concurrent
311 switch (lh->mlh_reg_mode) {
313 lh->mlh_pdo_mode = LCK_EX;
316 lh->mlh_pdo_mode = LCK_CR;
319 lh->mlh_pdo_mode = LCK_CW;
322 CERROR("Not expected lock type (0x%x)\n",
323 (int)lh->mlh_reg_mode);
328 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
332 static int mdt_getstatus(struct mdt_thread_info *info)
334 struct mdt_device *mdt = info->mti_mdt;
335 struct md_device *next = mdt->mdt_child;
336 struct mdt_body *repbody;
341 rc = mdt_check_ucred(info);
343 RETURN(err_serious(rc));
345 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK))
346 RETURN(err_serious(-ENOMEM));
348 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
349 rc = next->md_ops->mdo_root_get(info->mti_env, next, &repbody->fid1);
353 repbody->valid |= OBD_MD_FLID;
355 if (mdt->mdt_opts.mo_mds_capa &&
356 info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) {
357 struct mdt_object *root;
358 struct lustre_capa *capa;
360 root = mdt_object_find(info->mti_env, mdt, &repbody->fid1);
362 RETURN(PTR_ERR(root));
364 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
366 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
367 rc = mo_capa_get(info->mti_env, mdt_object_child(root), capa,
369 mdt_object_put(info->mti_env, root);
371 repbody->valid |= OBD_MD_FLMDSCAPA;
377 static int mdt_statfs(struct mdt_thread_info *info)
379 struct ptlrpc_request *req = mdt_info_req(info);
380 struct md_device *next = info->mti_mdt->mdt_child;
381 struct ptlrpc_service_part *svcpt;
382 struct obd_statfs *osfs;
387 svcpt = info->mti_pill->rc_req->rq_rqbd->rqbd_svcpt;
389 /* This will trigger a watchdog timeout */
390 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
391 (MDT_SERVICE_WATCHDOG_FACTOR *
392 at_get(&svcpt->scp_at_estimate)) + 1);
394 rc = mdt_check_ucred(info);
396 RETURN(err_serious(rc));
398 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK))
399 RETURN(err_serious(-ENOMEM));
401 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
405 /** statfs information are cached in the mdt_device */
406 if (cfs_time_before_64(info->mti_mdt->mdt_osfs_age,
407 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS))) {
408 /** statfs data is too old, get up-to-date one */
409 rc = next->md_ops->mdo_statfs(info->mti_env, next, osfs);
412 cfs_spin_lock(&info->mti_mdt->mdt_osfs_lock);
413 info->mti_mdt->mdt_osfs = *osfs;
414 info->mti_mdt->mdt_osfs_age = cfs_time_current_64();
415 cfs_spin_unlock(&info->mti_mdt->mdt_osfs_lock);
417 /** use cached statfs data */
418 cfs_spin_lock(&info->mti_mdt->mdt_osfs_lock);
419 *osfs = info->mti_mdt->mdt_osfs;
420 cfs_spin_unlock(&info->mti_mdt->mdt_osfs_lock);
424 mdt_counter_incr(req, LPROC_MDT_STATFS);
430 * Pack SOM attributes into the reply.
431 * Call under a DLM UPDATE lock.
433 static void mdt_pack_size2body(struct mdt_thread_info *info,
434 struct mdt_object *mo)
437 struct md_attr *ma = &info->mti_attr;
439 LASSERT(ma->ma_attr.la_valid & LA_MODE);
440 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
442 /* Check if Size-on-MDS is supported, if this is a regular file,
443 * if SOM is enabled on the object and if SOM cache exists and valid.
444 * Otherwise do not pack Size-on-MDS attributes to the reply. */
445 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
446 !S_ISREG(ma->ma_attr.la_mode) ||
447 !mdt_object_is_som_enabled(mo) ||
448 !(ma->ma_valid & MA_SOM))
451 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
452 b->size = ma->ma_som->msd_size;
453 b->blocks = ma->ma_som->msd_blocks;
456 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
457 const struct lu_attr *attr, const struct lu_fid *fid)
459 struct md_attr *ma = &info->mti_attr;
461 LASSERT(ma->ma_valid & MA_INODE);
463 b->atime = attr->la_atime;
464 b->mtime = attr->la_mtime;
465 b->ctime = attr->la_ctime;
466 b->mode = attr->la_mode;
467 b->size = attr->la_size;
468 b->blocks = attr->la_blocks;
469 b->uid = attr->la_uid;
470 b->gid = attr->la_gid;
471 b->flags = attr->la_flags;
472 b->nlink = attr->la_nlink;
473 b->rdev = attr->la_rdev;
475 /*XXX should pack the reply body according to lu_valid*/
476 b->valid |= OBD_MD_FLCTIME | OBD_MD_FLUID |
477 OBD_MD_FLGID | OBD_MD_FLTYPE |
478 OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLFLAGS |
479 OBD_MD_FLATIME | OBD_MD_FLMTIME ;
481 if (!S_ISREG(attr->la_mode)) {
482 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
483 } else if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV)) {
484 /* means no objects are allocated on osts. */
485 LASSERT(!(ma->ma_valid & MA_LOV));
486 /* just ignore blocks occupied by extend attributes on MDS */
488 /* if no object is allocated on osts, the size on mds is valid. b=22272 */
489 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
494 b->valid |= OBD_MD_FLID;
496 /* FIXME: these should be fixed when new igif ready.*/
497 b->ino = fid_oid(fid); /* 1.6 compatibility */
498 b->generation = fid_ver(fid); /* 1.6 compatibility */
499 b->valid |= OBD_MD_FLGENER; /* 1.6 compatibility */
501 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, size="LPU64"\n",
502 PFID(fid), b->nlink, b->mode, b->size);
506 mdt_body_reverse_idmap(info, b);
508 if (b->valid & OBD_MD_FLSIZE)
509 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
510 PFID(fid), (unsigned long long)b->size);
513 static inline int mdt_body_has_lov(const struct lu_attr *la,
514 const struct mdt_body *body)
516 return ((S_ISREG(la->la_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
517 (S_ISDIR(la->la_mode) && (body->valid & OBD_MD_FLDIREA )) );
520 void mdt_client_compatibility(struct mdt_thread_info *info)
522 struct mdt_body *body;
523 struct ptlrpc_request *req = mdt_info_req(info);
524 struct obd_export *exp = req->rq_export;
525 struct md_attr *ma = &info->mti_attr;
526 struct lu_attr *la = &ma->ma_attr;
529 if (exp->exp_connect_flags & OBD_CONNECT_LAYOUTLOCK)
530 /* the client can deal with 16-bit lmm_stripe_count */
533 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
535 if (!mdt_body_has_lov(la, body))
538 /* now we have a reply with a lov for a client not compatible with the
539 * layout lock so we have to clean the layout generation number */
540 if (S_ISREG(la->la_mode))
541 ma->ma_lmm->lmm_layout_gen = 0;
545 static int mdt_big_lmm_get(const struct lu_env *env, struct mdt_object *o,
548 struct mdt_thread_info *info;
552 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
553 LASSERT(info != NULL);
554 LASSERT(ma->ma_lmm_size > 0);
555 LASSERT(info->mti_big_lmm_used == 0);
556 rc = mo_xattr_get(env, mdt_object_child(o), &LU_BUF_NULL,
561 /* big_lmm may need to be grown */
562 if (info->mti_big_lmmsize < rc) {
563 int size = size_roundup_power2(rc);
565 if (info->mti_big_lmmsize > 0) {
566 /* free old buffer */
567 LASSERT(info->mti_big_lmm);
568 OBD_FREE_LARGE(info->mti_big_lmm,
569 info->mti_big_lmmsize);
570 info->mti_big_lmm = NULL;
571 info->mti_big_lmmsize = 0;
574 OBD_ALLOC_LARGE(info->mti_big_lmm, size);
575 if (info->mti_big_lmm == NULL)
577 info->mti_big_lmmsize = size;
579 LASSERT(info->mti_big_lmmsize >= rc);
581 info->mti_buf.lb_buf = info->mti_big_lmm;
582 info->mti_buf.lb_len = info->mti_big_lmmsize;
583 rc = mo_xattr_get(env, mdt_object_child(o), &info->mti_buf,
588 info->mti_big_lmm_used = 1;
589 ma->ma_valid |= MA_LOV;
590 ma->ma_lmm = info->mti_big_lmm;
591 ma->ma_lmm_size = rc;
593 /* update mdt_max_mdsize so all clients will be aware about that */
594 if (info->mti_mdt->mdt_max_mdsize < rc)
595 info->mti_mdt->mdt_max_mdsize = rc;
600 int mdt_attr_get_lov(struct mdt_thread_info *info,
601 struct mdt_object *o, struct md_attr *ma)
603 struct md_object *next = mdt_object_child(o);
604 struct lu_buf *buf = &info->mti_buf;
607 buf->lb_buf = ma->ma_lmm;
608 buf->lb_len = ma->ma_lmm_size;
609 rc = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_LOV);
611 ma->ma_lmm_size = rc;
612 ma->ma_valid |= MA_LOV;
614 } else if (rc == -ENODATA) {
617 } else if (rc == -ERANGE) {
618 rc = mdt_big_lmm_get(info->mti_env, o, ma);
624 int mdt_attr_get_complex(struct mdt_thread_info *info,
625 struct mdt_object *o, struct md_attr *ma)
627 const struct lu_env *env = info->mti_env;
628 struct md_object *next = mdt_object_child(o);
629 struct lu_buf *buf = &info->mti_buf;
630 u32 mode = lu_object_attr(&next->mo_lu);
631 int need = ma->ma_need;
635 /* do we really need PFID */
636 LASSERT((ma->ma_need & MA_PFID) == 0);
640 if (need & MA_INODE) {
641 ma->ma_need = MA_INODE;
642 rc = mo_attr_get(env, next, ma);
645 ma->ma_valid |= MA_INODE;
648 if (need & MA_LOV && (S_ISREG(mode) || S_ISDIR(mode))) {
649 rc = mdt_attr_get_lov(info, o, ma);
654 if (need & MA_LMV && S_ISDIR(mode)) {
655 buf->lb_buf = ma->ma_lmv;
656 buf->lb_len = ma->ma_lmv_size;
657 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_LMV);
659 ma->ma_lmv_size = rc2;
660 ma->ma_valid |= MA_LMV;
661 } else if (rc2 == -ENODATA) {
669 if (rc == 0 && S_ISREG(mode) && (need & (MA_HSM | MA_SOM))) {
670 struct lustre_mdt_attrs *lma;
672 lma = (struct lustre_mdt_attrs *)info->mti_xattr_buf;
673 CLASSERT(sizeof(*lma) <= sizeof(info->mti_xattr_buf));
676 buf->lb_len = sizeof(info->mti_xattr_buf);
677 rc = mo_xattr_get(env, next, buf, XATTR_NAME_LMA);
679 lustre_lma_swab(lma);
680 /* Swab and copy LMA */
682 if (lma->lma_compat & LMAC_HSM)
683 ma->ma_hsm.mh_flags =
684 lma->lma_flags & HSM_FLAGS_MASK;
686 ma->ma_hsm.mh_flags = 0;
687 ma->ma_valid |= MA_HSM;
690 if (need & MA_SOM && lma->lma_compat & LMAC_SOM) {
691 LASSERT(ma->ma_som != NULL);
692 ma->ma_som->msd_ioepoch = lma->lma_ioepoch;
693 ma->ma_som->msd_size = lma->lma_som_size;
694 ma->ma_som->msd_blocks = lma->lma_som_blocks;
695 ma->ma_som->msd_mountid = lma->lma_som_mountid;
696 ma->ma_valid |= MA_SOM;
699 } else if (rc == -ENODATA) {
704 #ifdef CONFIG_FS_POSIX_ACL
705 if (need & MA_ACL_DEF && S_ISDIR(mode)) {
706 buf->lb_buf = ma->ma_acl;
707 buf->lb_len = ma->ma_acl_size;
708 rc2 = mo_xattr_get(env, next, buf, XATTR_NAME_ACL_DEFAULT);
710 ma->ma_acl_size = rc2;
711 ma->ma_valid |= MA_ACL_DEF;
712 } else if (rc2 == -ENODATA) {
721 CDEBUG(D_INODE, "after getattr rc = %d, ma_valid = "LPX64" ma_lmm=%p\n",
722 rc, ma->ma_valid, ma->ma_lmm);
726 static int mdt_getattr_internal(struct mdt_thread_info *info,
727 struct mdt_object *o, int ma_need)
729 struct md_object *next = mdt_object_child(o);
730 const struct mdt_body *reqbody = info->mti_body;
731 struct ptlrpc_request *req = mdt_info_req(info);
732 struct md_attr *ma = &info->mti_attr;
733 struct lu_attr *la = &ma->ma_attr;
734 struct req_capsule *pill = info->mti_pill;
735 const struct lu_env *env = info->mti_env;
736 struct mdt_body *repbody;
737 struct lu_buf *buffer = &info->mti_buf;
742 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
743 RETURN(err_serious(-ENOMEM));
745 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
749 rc = mdt_object_exists(o);
751 /* This object is located on remote node.*/
752 repbody->fid1 = *mdt_object_fid(o);
753 repbody->valid = OBD_MD_FLID | OBD_MD_MDS;
757 buffer->lb_len = reqbody->eadatasize;
758 if (buffer->lb_len > 0)
759 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
761 buffer->lb_buf = NULL;
763 /* If it is dir object and client require MEA, then we got MEA */
764 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
765 reqbody->valid & OBD_MD_MEA) {
766 /* Assumption: MDT_MD size is enough for lmv size. */
767 ma->ma_lmv = buffer->lb_buf;
768 ma->ma_lmv_size = buffer->lb_len;
769 ma->ma_need = MA_LMV | MA_INODE;
771 ma->ma_lmm = buffer->lb_buf;
772 ma->ma_lmm_size = buffer->lb_len;
773 ma->ma_need = MA_LOV | MA_INODE;
776 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
777 reqbody->valid & OBD_MD_FLDIREA &&
778 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
779 /* get default stripe info for this dir. */
780 ma->ma_need |= MA_LOV_DEF;
782 ma->ma_need |= ma_need;
783 if (ma->ma_need & MA_SOM)
784 ma->ma_som = &info->mti_u.som.data;
786 rc = mdt_attr_get_complex(info, o, ma);
788 CERROR("getattr error for "DFID": %d\n",
789 PFID(mdt_object_fid(o)), rc);
793 is_root = lu_fid_eq(mdt_object_fid(o), &info->mti_mdt->mdt_md_root_fid);
795 /* the Lustre protocol supposes to return default striping
796 * on the user-visible root if explicitly requested */
797 if ((ma->ma_valid & MA_LOV) == 0 && S_ISDIR(la->la_mode) &&
798 (ma->ma_need & MA_LOV_DEF && is_root) && (ma->ma_need & MA_LOV)) {
799 struct lu_fid rootfid;
800 struct mdt_object *root;
801 struct mdt_device *mdt = info->mti_mdt;
803 rc = dt_root_get(env, mdt->mdt_bottom, &rootfid);
806 root = mdt_object_find(env, mdt, &rootfid);
808 RETURN(PTR_ERR(root));
809 rc = mdt_attr_get_lov(info, root, ma);
810 mdt_object_put(info->mti_env, root);
812 CERROR("getattr error for "DFID": %d\n",
813 PFID(mdt_object_fid(o)), rc);
818 if (likely(ma->ma_valid & MA_INODE))
819 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
823 if (mdt_body_has_lov(la, reqbody)) {
824 if (ma->ma_valid & MA_LOV) {
825 LASSERT(ma->ma_lmm_size);
826 mdt_dump_lmm(D_INFO, ma->ma_lmm);
827 repbody->eadatasize = ma->ma_lmm_size;
828 if (S_ISDIR(la->la_mode))
829 repbody->valid |= OBD_MD_FLDIREA;
831 repbody->valid |= OBD_MD_FLEASIZE;
833 if (ma->ma_valid & MA_LMV) {
834 LASSERT(S_ISDIR(la->la_mode));
835 repbody->eadatasize = ma->ma_lmv_size;
836 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
838 } else if (S_ISLNK(la->la_mode) &&
839 reqbody->valid & OBD_MD_LINKNAME) {
840 buffer->lb_buf = ma->ma_lmm;
841 /* eadatasize from client includes NULL-terminator, so
842 * there is no need to read it */
843 buffer->lb_len = reqbody->eadatasize - 1;
844 rc = mo_readlink(env, next, buffer);
845 if (unlikely(rc <= 0)) {
846 CERROR("readlink failed: %d\n", rc);
849 int print_limit = min_t(int, CFS_PAGE_SIZE - 128, rc);
851 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
853 repbody->valid |= OBD_MD_LINKNAME;
854 /* we need to report back size with NULL-terminator
855 * because client expects that */
856 repbody->eadatasize = rc + 1;
857 if (repbody->eadatasize != reqbody->eadatasize)
858 CERROR("Read shorter symlink %d, expected %d\n",
859 rc, reqbody->eadatasize - 1);
861 ((char *)ma->ma_lmm)[rc] = 0;
863 /* If the total CDEBUG() size is larger than a page, it
864 * will print a warning to the console, avoid this by
865 * printing just the last part of the symlink. */
866 CDEBUG(D_INODE, "symlink dest %s%.*s, len = %d\n",
867 print_limit < rc ? "..." : "", print_limit,
868 (char *)ma->ma_lmm + rc - print_limit, rc);
873 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
874 repbody->max_cookiesize = 0;
875 repbody->max_mdsize = info->mti_mdt->mdt_max_mdsize;
876 repbody->valid |= OBD_MD_FLMODEASIZE;
877 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
878 "MAX_COOKIE to : %d:%d\n", repbody->max_mdsize,
879 repbody->max_cookiesize);
882 if (exp_connect_rmtclient(info->mti_exp) &&
883 reqbody->valid & OBD_MD_FLRMTPERM) {
884 void *buf = req_capsule_server_get(pill, &RMF_ACL);
886 /* mdt_getattr_lock only */
887 rc = mdt_pack_remote_perm(info, o, buf);
889 repbody->valid &= ~OBD_MD_FLRMTPERM;
890 repbody->aclsize = 0;
893 repbody->valid |= OBD_MD_FLRMTPERM;
894 repbody->aclsize = sizeof(struct mdt_remote_perm);
897 #ifdef CONFIG_FS_POSIX_ACL
898 else if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
899 (reqbody->valid & OBD_MD_FLACL)) {
900 buffer->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
901 buffer->lb_len = req_capsule_get_size(pill,
902 &RMF_ACL, RCL_SERVER);
903 if (buffer->lb_len > 0) {
904 rc = mo_xattr_get(env, next, buffer,
905 XATTR_NAME_ACL_ACCESS);
907 if (rc == -ENODATA) {
908 repbody->aclsize = 0;
909 repbody->valid |= OBD_MD_FLACL;
911 } else if (rc == -EOPNOTSUPP) {
914 CERROR("got acl size: %d\n", rc);
917 repbody->aclsize = rc;
918 repbody->valid |= OBD_MD_FLACL;
925 if (reqbody->valid & OBD_MD_FLMDSCAPA &&
926 info->mti_mdt->mdt_opts.mo_mds_capa &&
927 info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) {
928 struct lustre_capa *capa;
930 capa = req_capsule_server_get(pill, &RMF_CAPA1);
932 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
933 rc = mo_capa_get(env, next, capa, 0);
936 repbody->valid |= OBD_MD_FLMDSCAPA;
941 mdt_counter_incr(req, LPROC_MDT_GETATTR);
946 static int mdt_renew_capa(struct mdt_thread_info *info)
948 struct mdt_object *obj = info->mti_object;
949 struct mdt_body *body;
950 struct lustre_capa *capa, *c;
954 /* if object doesn't exist, or server has disabled capability,
955 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
958 if (!obj || !info->mti_mdt->mdt_opts.mo_oss_capa ||
959 !(info->mti_exp->exp_connect_flags & OBD_CONNECT_OSS_CAPA))
962 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
963 LASSERT(body != NULL);
965 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
968 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
972 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
974 body->valid |= OBD_MD_FLOSSCAPA;
978 static int mdt_getattr(struct mdt_thread_info *info)
980 struct mdt_object *obj = info->mti_object;
981 struct req_capsule *pill = info->mti_pill;
982 struct mdt_body *reqbody;
983 struct mdt_body *repbody;
988 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
991 if (reqbody->valid & OBD_MD_FLOSSCAPA) {
992 rc = req_capsule_server_pack(pill);
994 RETURN(err_serious(rc));
995 rc = mdt_renew_capa(info);
996 GOTO(out_shrink, rc);
999 LASSERT(obj != NULL);
1000 LASSERT(lu_object_assert_exists(&obj->mot_obj.mo_lu));
1002 mode = lu_object_attr(&obj->mot_obj.mo_lu);
1004 /* old clients may not report needed easize, use max value then */
1005 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1006 reqbody->eadatasize == 0 ?
1007 info->mti_mdt->mdt_max_mdsize :
1008 reqbody->eadatasize);
1010 rc = req_capsule_server_pack(pill);
1011 if (unlikely(rc != 0))
1012 RETURN(err_serious(rc));
1014 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1015 LASSERT(repbody != NULL);
1016 repbody->eadatasize = 0;
1017 repbody->aclsize = 0;
1019 if (reqbody->valid & OBD_MD_FLRMTPERM)
1020 rc = mdt_init_ucred(info, reqbody);
1022 rc = mdt_check_ucred(info);
1024 GOTO(out_shrink, rc);
1026 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
1027 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1030 * Don't check capability at all, because rename might getattr for
1031 * remote obj, and at that time no capability is available.
1033 mdt_set_capainfo(info, 1, &reqbody->fid1, BYPASS_CAPA);
1034 rc = mdt_getattr_internal(info, obj, 0);
1035 if (reqbody->valid & OBD_MD_FLRMTPERM)
1036 mdt_exit_ucred(info);
1039 mdt_client_compatibility(info);
1040 rc2 = mdt_fix_reply(info);
1046 static int mdt_is_subdir(struct mdt_thread_info *info)
1048 struct mdt_object *o = info->mti_object;
1049 struct req_capsule *pill = info->mti_pill;
1050 const struct mdt_body *body = info->mti_body;
1051 struct mdt_body *repbody;
1057 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1060 * We save last checked parent fid to @repbody->fid1 for remote
1063 LASSERT(fid_is_sane(&body->fid2));
1064 LASSERT(mdt_object_exists(o) > 0);
1065 rc = mdo_is_subdir(info->mti_env, mdt_object_child(o),
1066 &body->fid2, &repbody->fid1);
1067 if (rc == 0 || rc == -EREMOTE)
1068 repbody->valid |= OBD_MD_FLID;
1073 static int mdt_raw_lookup(struct mdt_thread_info *info,
1074 struct mdt_object *parent,
1075 const struct lu_name *lname,
1076 struct ldlm_reply *ldlm_rep)
1078 struct md_object *next = mdt_object_child(info->mti_object);
1079 const struct mdt_body *reqbody = info->mti_body;
1080 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1081 struct mdt_body *repbody;
1085 if (reqbody->valid != OBD_MD_FLID)
1088 LASSERT(!info->mti_cross_ref);
1090 /* Only got the fid of this obj by name */
1091 fid_zero(child_fid);
1092 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
1095 /* XXX is raw_lookup possible as intent operation? */
1098 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1101 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1103 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1106 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1107 repbody->fid1 = *child_fid;
1108 repbody->valid = OBD_MD_FLID;
1114 * UPDATE lock should be taken against parent, and be release before exit;
1115 * child_bits lock should be taken against child, and be returned back:
1116 * (1)normal request should release the child lock;
1117 * (2)intent request will grant the lock to client.
1119 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
1120 struct mdt_lock_handle *lhc,
1122 struct ldlm_reply *ldlm_rep)
1124 struct ptlrpc_request *req = mdt_info_req(info);
1125 struct mdt_body *reqbody = NULL;
1126 struct mdt_object *parent = info->mti_object;
1127 struct mdt_object *child;
1128 struct md_object *next = mdt_object_child(parent);
1129 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1130 struct lu_name *lname = NULL;
1131 const char *name = NULL;
1133 struct mdt_lock_handle *lhp = NULL;
1134 struct ldlm_lock *lock;
1135 struct ldlm_res_id *res_id;
1142 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
1143 LASSERT(ergo(is_resent,
1144 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
1146 LASSERT(parent != NULL);
1147 name = req_capsule_client_get(info->mti_pill, &RMF_NAME);
1149 RETURN(err_serious(-EFAULT));
1151 namelen = req_capsule_get_size(info->mti_pill, &RMF_NAME,
1153 if (!info->mti_cross_ref) {
1155 * XXX: Check for "namelen == 0" is for getattr by fid
1156 * (OBD_CONNECT_ATTRFID), otherwise do not allow empty name,
1157 * that is the name must contain at least one character and
1158 * the terminating '\0'
1161 reqbody = req_capsule_client_get(info->mti_pill,
1163 if (unlikely(reqbody == NULL))
1164 RETURN(err_serious(-EFAULT));
1166 if (unlikely(!fid_is_sane(&reqbody->fid2)))
1167 RETURN(err_serious(-EINVAL));
1170 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
1172 PFID(mdt_object_fid(parent)),
1173 PFID(&reqbody->fid2), ldlm_rep);
1175 lname = mdt_name(info->mti_env, (char *)name, namelen);
1176 CDEBUG(D_INODE, "getattr with lock for "DFID"/%s, "
1177 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
1181 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
1183 rc = mdt_object_exists(parent);
1184 if (unlikely(rc == 0)) {
1185 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1186 &parent->mot_obj.mo_lu,
1187 "Parent doesn't exist!\n");
1189 } else if (!info->mti_cross_ref) {
1190 LASSERTF(rc > 0, "Parent "DFID" is on remote server\n",
1191 PFID(mdt_object_fid(parent)));
1194 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
1202 if (info->mti_cross_ref) {
1203 /* Only getattr on the child. Parent is on another node. */
1204 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1206 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
1207 "ldlm_rep=%p\n", PFID(mdt_object_fid(child)), ldlm_rep);
1210 /* Do not take lock for resent case. */
1211 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1212 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
1213 lhc->mlh_reg_lh.cookie);
1214 LASSERT(fid_res_name_eq(mdt_object_fid(child),
1215 &lock->l_resource->lr_name));
1216 LDLM_LOCK_PUT(lock);
1219 mdt_lock_handle_init(lhc);
1220 mdt_lock_reg_init(lhc, LCK_PR);
1223 * Object's name is on another MDS, no lookup lock is
1224 * needed here but update is.
1226 child_bits &= ~MDS_INODELOCK_LOOKUP;
1227 child_bits |= MDS_INODELOCK_UPDATE;
1229 rc = mdt_object_lock(info, child, lhc, child_bits,
1233 /* Finally, we can get attr for child. */
1234 mdt_set_capainfo(info, 0, mdt_object_fid(child),
1236 rc = mdt_getattr_internal(info, child, 0);
1237 if (unlikely(rc != 0))
1238 mdt_object_unlock(info, child, lhc, 1);
1244 /* step 1: lock parent only if parent is a directory */
1245 if (S_ISDIR(lu_object_attr(&parent->mot_obj.mo_lu))) {
1246 lhp = &info->mti_lh[MDT_LH_PARENT];
1247 mdt_lock_pdo_init(lhp, LCK_PR, name, namelen);
1248 rc = mdt_object_lock(info, parent, lhp,
1249 MDS_INODELOCK_UPDATE,
1251 if (unlikely(rc != 0))
1255 /* step 2: lookup child's fid by name */
1256 fid_zero(child_fid);
1257 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
1262 mdt_set_disposition(info, ldlm_rep,
1264 GOTO(out_parent, rc);
1266 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1268 *child_fid = reqbody->fid2;
1269 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1273 *step 3: find the child object by fid & lock it.
1274 * regardless if it is local or remote.
1276 child = mdt_object_find(info->mti_env, info->mti_mdt, child_fid);
1278 if (unlikely(IS_ERR(child)))
1279 GOTO(out_parent, rc = PTR_ERR(child));
1281 /* Do not take lock for resent case. */
1282 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1283 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
1284 lhc->mlh_reg_lh.cookie);
1286 res_id = &lock->l_resource->lr_name;
1287 if (!fid_res_name_eq(mdt_object_fid(child),
1288 &lock->l_resource->lr_name)) {
1289 LASSERTF(fid_res_name_eq(mdt_object_fid(parent),
1290 &lock->l_resource->lr_name),
1291 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
1292 (unsigned long)res_id->name[0],
1293 (unsigned long)res_id->name[1],
1294 (unsigned long)res_id->name[2],
1295 PFID(mdt_object_fid(parent)));
1296 CWARN("Although resent, but still not get child lock"
1297 "parent:"DFID" child:"DFID"\n",
1298 PFID(mdt_object_fid(parent)),
1299 PFID(mdt_object_fid(child)));
1300 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
1301 LDLM_LOCK_PUT(lock);
1304 LDLM_LOCK_PUT(lock);
1308 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout*2);
1309 mdt_lock_handle_init(lhc);
1310 if (child_bits == MDS_INODELOCK_LAYOUT)
1311 mdt_lock_reg_init(lhc, LCK_CR);
1313 mdt_lock_reg_init(lhc, LCK_PR);
1315 if (mdt_object_exists(child) == 0) {
1316 LU_OBJECT_DEBUG(D_INODE, info->mti_env,
1317 &child->mot_obj.mo_lu,
1318 "Object doesn't exist!\n");
1319 GOTO(out_child, rc = -ENOENT);
1322 if (!(child_bits & MDS_INODELOCK_UPDATE)) {
1323 struct md_attr *ma = &info->mti_attr;
1326 ma->ma_need = MA_INODE;
1327 rc = mdt_attr_get_complex(info, child, ma);
1328 if (unlikely(rc != 0))
1329 GOTO(out_child, rc);
1331 /* layout lock is used only on regular files */
1332 if ((ma->ma_valid & MA_INODE) &&
1333 (ma->ma_attr.la_valid & LA_MODE) &&
1334 !S_ISREG(ma->ma_attr.la_mode))
1335 child_bits &= ~MDS_INODELOCK_LAYOUT;
1337 /* If the file has not been changed for some time, we
1338 * return not only a LOOKUP lock, but also an UPDATE
1339 * lock and this might save us RPC on later STAT. For
1340 * directories, it also let negative dentry starts
1341 * working for this dir. */
1342 if (ma->ma_valid & MA_INODE &&
1343 ma->ma_attr.la_valid & LA_CTIME &&
1344 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1345 ma->ma_attr.la_ctime < cfs_time_current_sec())
1346 child_bits |= MDS_INODELOCK_UPDATE;
1349 rc = mdt_object_lock(info, child, lhc, child_bits,
1352 if (unlikely(rc != 0))
1353 GOTO(out_child, rc);
1356 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1357 /* Get MA_SOM attributes if update lock is given. */
1359 lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_UPDATE &&
1360 S_ISREG(lu_object_attr(&mdt_object_child(child)->mo_lu)))
1363 /* finally, we can get attr for child. */
1364 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1365 rc = mdt_getattr_internal(info, child, ma_need);
1366 if (unlikely(rc != 0)) {
1367 mdt_object_unlock(info, child, lhc, 1);
1369 /* Debugging code. */
1370 res_id = &lock->l_resource->lr_name;
1371 LDLM_DEBUG(lock, "Returning lock to client");
1372 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1373 &lock->l_resource->lr_name),
1374 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
1375 (unsigned long)res_id->name[0],
1376 (unsigned long)res_id->name[1],
1377 (unsigned long)res_id->name[2],
1378 PFID(mdt_object_fid(child)));
1379 mdt_pack_size2body(info, child);
1382 LDLM_LOCK_PUT(lock);
1386 mdt_object_put(info->mti_env, child);
1389 mdt_object_unlock(info, parent, lhp, 1);
1393 /* normal handler: should release the child lock */
1394 static int mdt_getattr_name(struct mdt_thread_info *info)
1396 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1397 struct mdt_body *reqbody;
1398 struct mdt_body *repbody;
1402 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1403 LASSERT(reqbody != NULL);
1404 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1405 LASSERT(repbody != NULL);
1407 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
1408 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1409 repbody->eadatasize = 0;
1410 repbody->aclsize = 0;
1412 rc = mdt_init_ucred(info, reqbody);
1414 GOTO(out_shrink, rc);
1416 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1417 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1418 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1419 lhc->mlh_reg_lh.cookie = 0;
1421 mdt_exit_ucred(info);
1424 mdt_client_compatibility(info);
1425 rc2 = mdt_fix_reply(info);
1431 static const struct lu_device_operations mdt_lu_ops;
1433 static int lu_device_is_mdt(struct lu_device *d)
1435 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &mdt_lu_ops);
1438 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1439 void *karg, void *uarg);
1441 static int mdt_set_info(struct mdt_thread_info *info)
1443 struct ptlrpc_request *req = mdt_info_req(info);
1446 int keylen, vallen, rc = 0;
1449 rc = req_capsule_server_pack(info->mti_pill);
1453 key = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_KEY);
1455 DEBUG_REQ(D_HA, req, "no set_info key");
1459 keylen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_KEY,
1462 val = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_VAL);
1464 DEBUG_REQ(D_HA, req, "no set_info val");
1468 vallen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_VAL,
1471 /* Swab any part of val you need to here */
1472 if (KEY_IS(KEY_READ_ONLY)) {
1474 lustre_msg_set_status(req->rq_repmsg, 0);
1476 cfs_spin_lock(&req->rq_export->exp_lock);
1478 req->rq_export->exp_connect_flags |= OBD_CONNECT_RDONLY;
1480 req->rq_export->exp_connect_flags &=~OBD_CONNECT_RDONLY;
1481 cfs_spin_unlock(&req->rq_export->exp_lock);
1483 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1484 struct changelog_setinfo *cs =
1485 (struct changelog_setinfo *)val;
1486 if (vallen != sizeof(*cs)) {
1487 CERROR("Bad changelog_clear setinfo size %d\n", vallen);
1490 if (ptlrpc_req_need_swab(req)) {
1491 __swab64s(&cs->cs_recno);
1492 __swab32s(&cs->cs_id);
1495 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, info->mti_exp,
1497 lustre_msg_set_status(req->rq_repmsg, rc);
1505 static int mdt_connect(struct mdt_thread_info *info)
1508 struct ptlrpc_request *req;
1510 req = mdt_info_req(info);
1511 rc = target_handle_connect(req);
1513 LASSERT(req->rq_export != NULL);
1514 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
1515 rc = mdt_init_sec_level(info);
1517 rc = mdt_init_idmap(info);
1519 obd_disconnect(class_export_get(req->rq_export));
1521 rc = err_serious(rc);
1526 static int mdt_disconnect(struct mdt_thread_info *info)
1531 rc = target_handle_disconnect(mdt_info_req(info));
1533 rc = err_serious(rc);
1537 static int mdt_sendpage(struct mdt_thread_info *info,
1538 struct lu_rdpg *rdpg, int nob)
1540 struct ptlrpc_request *req = mdt_info_req(info);
1541 struct obd_export *exp = req->rq_export;
1542 struct ptlrpc_bulk_desc *desc;
1543 struct l_wait_info *lwi = &info->mti_u.rdpg.mti_wait_info;
1550 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, BULK_PUT_SOURCE,
1555 if (!(exp->exp_connect_flags & OBD_CONNECT_BRW_SIZE))
1556 /* old client requires reply size in it's PAGE_SIZE,
1557 * which is rdpg->rp_count */
1558 nob = rdpg->rp_count;
1560 for (i = 0, tmpcount = nob; i < rdpg->rp_npages && tmpcount > 0;
1561 i++, tmpcount -= tmpsize) {
1562 tmpsize = min_t(int, tmpcount, CFS_PAGE_SIZE);
1563 ptlrpc_prep_bulk_page(desc, rdpg->rp_pages[i], 0, tmpsize);
1566 LASSERT(desc->bd_nob == nob);
1567 rc = target_bulk_io(exp, desc, lwi);
1568 ptlrpc_free_bulk(desc);
1572 #ifdef HAVE_SPLIT_SUPPORT
1574 * Retrieve dir entry from the page and insert it to the slave object, actually,
1575 * this should be in osd layer, but since it will not in the final product, so
1576 * just do it here and do not define more moo api anymore for this.
1578 static int mdt_write_dir_page(struct mdt_thread_info *info, struct page *page,
1581 struct mdt_object *object = info->mti_object;
1582 struct lu_fid *lf = &info->mti_tmp_fid2;
1583 struct md_attr *ma = &info->mti_attr;
1584 struct lu_dirpage *dp;
1585 struct lu_dirent *ent;
1586 int rc = 0, offset = 0;
1589 /* Make sure we have at least one entry. */
1594 * Disable trans for this name insert, since it will include many trans
1597 info->mti_no_need_trans = 1;
1599 * When write_dir_page, no need update parent's ctime,
1600 * and no permission check for name_insert.
1602 ma->ma_attr.la_ctime = 0;
1603 ma->ma_attr.la_valid = LA_MODE;
1604 ma->ma_valid = MA_INODE;
1607 dp = page_address(page);
1608 offset = (int)((__u32)lu_dirent_start(dp) - (__u32)dp);
1610 for (ent = lu_dirent_start(dp); ent != NULL;
1611 ent = lu_dirent_next(ent)) {
1612 struct lu_name *lname;
1615 if (le16_to_cpu(ent->lde_namelen) == 0)
1618 fid_le_to_cpu(lf, &ent->lde_fid);
1619 if (le64_to_cpu(ent->lde_hash) & MAX_HASH_HIGHEST_BIT)
1620 ma->ma_attr.la_mode = S_IFDIR;
1622 ma->ma_attr.la_mode = 0;
1623 OBD_ALLOC(name, le16_to_cpu(ent->lde_namelen) + 1);
1625 GOTO(out, rc = -ENOMEM);
1627 memcpy(name, ent->lde_name, le16_to_cpu(ent->lde_namelen));
1628 lname = mdt_name(info->mti_env, name,
1629 le16_to_cpu(ent->lde_namelen));
1630 ma->ma_attr_flags |= (MDS_PERM_BYPASS | MDS_QUOTA_IGNORE);
1631 rc = mdo_name_insert(info->mti_env,
1632 md_object_next(&object->mot_obj),
1634 OBD_FREE(name, le16_to_cpu(ent->lde_namelen) + 1);
1636 CERROR("Can't insert %*.*s, rc %d\n",
1637 le16_to_cpu(ent->lde_namelen),
1638 le16_to_cpu(ent->lde_namelen),
1643 offset += lu_dirent_size(ent);
1653 static int mdt_bulk_timeout(void *data)
1657 CERROR("mdt bulk transfer timeout \n");
1662 static int mdt_writepage(struct mdt_thread_info *info)
1664 struct ptlrpc_request *req = mdt_info_req(info);
1665 struct mdt_body *reqbody;
1666 struct l_wait_info *lwi;
1667 struct ptlrpc_bulk_desc *desc;
1673 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1674 if (reqbody == NULL)
1675 RETURN(err_serious(-EFAULT));
1677 desc = ptlrpc_prep_bulk_exp(req, 1, BULK_GET_SINK, MDS_BULK_PORTAL);
1679 RETURN(err_serious(-ENOMEM));
1681 /* allocate the page for the desc */
1682 page = cfs_alloc_page(CFS_ALLOC_STD);
1684 GOTO(desc_cleanup, rc = -ENOMEM);
1686 CDEBUG(D_INFO, "Received page offset %d size %d \n",
1687 (int)reqbody->size, (int)reqbody->nlink);
1689 ptlrpc_prep_bulk_page(desc, page, (int)reqbody->size,
1690 (int)reqbody->nlink);
1692 rc = sptlrpc_svc_prep_bulk(req, desc);
1694 GOTO(cleanup_page, rc);
1696 * Check if client was evicted while we were doing i/o before touching
1701 GOTO(cleanup_page, rc = -ENOMEM);
1703 if (desc->bd_export->exp_failed)
1706 rc = ptlrpc_start_bulk_transfer (desc);
1708 *lwi = LWI_TIMEOUT_INTERVAL(obd_timeout * CFS_HZ / 4, CFS_HZ,
1709 mdt_bulk_timeout, desc);
1710 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc) ||
1711 desc->bd_export->exp_failed, lwi);
1712 LASSERT(rc == 0 || rc == -ETIMEDOUT);
1713 if (rc == -ETIMEDOUT) {
1714 DEBUG_REQ(D_ERROR, req, "timeout on bulk GET");
1715 ptlrpc_abort_bulk(desc);
1716 } else if (desc->bd_export->exp_failed) {
1717 DEBUG_REQ(D_ERROR, req, "Eviction on bulk GET");
1719 ptlrpc_abort_bulk(desc);
1720 } else if (!desc->bd_success ||
1721 desc->bd_nob_transferred != desc->bd_nob) {
1722 DEBUG_REQ(D_ERROR, req, "%s bulk GET %d(%d)",
1724 "truncated" : "network error on",
1725 desc->bd_nob_transferred, desc->bd_nob);
1726 /* XXX should this be a different errno? */
1730 DEBUG_REQ(D_ERROR, req, "ptlrpc_bulk_get failed: rc %d", rc);
1733 GOTO(cleanup_lwi, rc);
1734 rc = mdt_write_dir_page(info, page, reqbody->nlink);
1739 cfs_free_page(page);
1741 ptlrpc_free_bulk(desc);
1746 static int mdt_readpage(struct mdt_thread_info *info)
1748 struct mdt_object *object = info->mti_object;
1749 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1750 struct mdt_body *reqbody;
1751 struct mdt_body *repbody;
1756 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1757 RETURN(err_serious(-ENOMEM));
1759 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1760 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1761 if (reqbody == NULL || repbody == NULL)
1762 RETURN(err_serious(-EFAULT));
1765 * prepare @rdpg before calling lower layers and transfer itself. Here
1766 * reqbody->size contains offset of where to start to read and
1767 * reqbody->nlink contains number bytes to read.
1769 rdpg->rp_hash = reqbody->size;
1770 if (rdpg->rp_hash != reqbody->size) {
1771 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1772 rdpg->rp_hash, reqbody->size);
1776 rdpg->rp_attrs = reqbody->mode;
1777 if (info->mti_exp->exp_connect_flags & OBD_CONNECT_64BITHASH)
1778 rdpg->rp_attrs |= LUDA_64BITHASH;
1779 rdpg->rp_count = min_t(unsigned int, reqbody->nlink,
1780 PTLRPC_MAX_BRW_SIZE);
1781 rdpg->rp_npages = (rdpg->rp_count + CFS_PAGE_SIZE - 1) >>
1783 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1784 if (rdpg->rp_pages == NULL)
1787 for (i = 0; i < rdpg->rp_npages; ++i) {
1788 rdpg->rp_pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
1789 if (rdpg->rp_pages[i] == NULL)
1790 GOTO(free_rdpg, rc = -ENOMEM);
1793 /* call lower layers to fill allocated pages with directory data */
1794 rc = mo_readpage(info->mti_env, mdt_object_child(object), rdpg);
1796 GOTO(free_rdpg, rc);
1798 /* send pages to client */
1799 rc = mdt_sendpage(info, rdpg, rc);
1804 for (i = 0; i < rdpg->rp_npages; i++)
1805 if (rdpg->rp_pages[i] != NULL)
1806 cfs_free_page(rdpg->rp_pages[i]);
1807 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1809 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1815 static int mdt_reint_internal(struct mdt_thread_info *info,
1816 struct mdt_lock_handle *lhc,
1819 struct req_capsule *pill = info->mti_pill;
1820 struct mdt_body *repbody;
1825 rc = mdt_reint_unpack(info, op);
1827 CERROR("Can't unpack reint, rc %d\n", rc);
1828 RETURN(err_serious(rc));
1831 /* for replay (no_create) lmm is not needed, client has it already */
1832 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1833 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1834 info->mti_rr.rr_eadatalen);
1836 /* llog cookies are always 0, the field is kept for compatibility */
1837 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1838 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER, 0);
1840 rc = req_capsule_server_pack(pill);
1842 CERROR("Can't pack response, rc %d\n", rc);
1843 RETURN(err_serious(rc));
1846 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1847 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1849 repbody->eadatasize = 0;
1850 repbody->aclsize = 0;
1853 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1855 /* for replay no cookkie / lmm need, because client have this already */
1856 if (info->mti_spec.no_create)
1857 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1858 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1860 rc = mdt_init_ucred_reint(info);
1862 GOTO(out_shrink, rc);
1864 rc = mdt_fix_attr_ucred(info, op);
1866 GOTO(out_ucred, rc = err_serious(rc));
1868 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1869 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1870 GOTO(out_ucred, rc);
1872 rc = mdt_reint_rec(info, lhc);
1875 mdt_exit_ucred(info);
1877 mdt_client_compatibility(info);
1878 rc2 = mdt_fix_reply(info);
1884 static long mdt_reint_opcode(struct mdt_thread_info *info,
1885 const struct req_format **fmt)
1887 struct mdt_rec_reint *rec;
1890 opc = err_serious(-EFAULT);
1891 rec = req_capsule_client_get(info->mti_pill, &RMF_REC_REINT);
1893 opc = rec->rr_opcode;
1894 DEBUG_REQ(D_INODE, mdt_info_req(info), "reint opt = %ld", opc);
1895 if (opc < REINT_MAX && fmt[opc] != NULL)
1896 req_capsule_extend(info->mti_pill, fmt[opc]);
1898 CERROR("Unsupported opc: %ld\n", opc);
1899 opc = err_serious(opc);
1905 static int mdt_reint(struct mdt_thread_info *info)
1910 static const struct req_format *reint_fmts[REINT_MAX] = {
1911 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1912 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1913 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1914 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1915 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1916 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1917 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR
1922 opc = mdt_reint_opcode(info, reint_fmts);
1925 * No lock possible here from client to pass it to reint code
1928 rc = mdt_reint_internal(info, NULL, opc);
1933 info->mti_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1937 /* this should sync the whole device */
1938 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1940 struct dt_device *dt = mdt->mdt_bottom;
1944 rc = dt->dd_ops->dt_sync(env, dt);
1948 /* this should sync this object */
1949 static int mdt_object_sync(struct mdt_thread_info *info)
1951 struct md_object *next;
1955 if (!mdt_object_exists(info->mti_object)) {
1956 CWARN("Non existing object "DFID"!\n",
1957 PFID(mdt_object_fid(info->mti_object)));
1960 next = mdt_object_child(info->mti_object);
1961 rc = mo_object_sync(info->mti_env, next);
1966 static int mdt_sync(struct mdt_thread_info *info)
1968 struct ptlrpc_request *req = mdt_info_req(info);
1969 struct req_capsule *pill = info->mti_pill;
1970 struct mdt_body *body;
1974 /* The fid may be zero, so we req_capsule_set manually */
1975 req_capsule_set(pill, &RQF_MDS_SYNC);
1977 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
1979 RETURN(err_serious(-EINVAL));
1981 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1982 RETURN(err_serious(-ENOMEM));
1984 if (fid_seq(&body->fid1) == 0) {
1985 /* sync the whole device */
1986 rc = req_capsule_server_pack(pill);
1988 rc = mdt_device_sync(info->mti_env, info->mti_mdt);
1990 rc = err_serious(rc);
1992 /* sync an object */
1993 rc = mdt_unpack_req_pack_rep(info, HABEO_CORPUS|HABEO_REFERO);
1995 rc = mdt_object_sync(info);
1997 const struct lu_fid *fid;
1998 struct lu_attr *la = &info->mti_attr.ma_attr;
2000 info->mti_attr.ma_need = MA_INODE;
2001 info->mti_attr.ma_valid = 0;
2002 rc = mdt_attr_get_complex(info, info->mti_object,
2005 body = req_capsule_server_get(pill,
2007 fid = mdt_object_fid(info->mti_object);
2008 mdt_pack_attr2body(info, body, la, fid);
2012 rc = err_serious(rc);
2015 mdt_counter_incr(req, LPROC_MDT_SYNC);
2021 * Quotacheck handler.
2022 * in-kernel quotacheck isn't supported any more.
2024 static int mdt_quotacheck(struct mdt_thread_info *info)
2026 struct obd_quotactl *oqctl;
2030 oqctl = req_capsule_client_get(info->mti_pill, &RMF_OBD_QUOTACTL);
2032 RETURN(err_serious(-EPROTO));
2034 rc = req_capsule_server_pack(info->mti_pill);
2036 RETURN(err_serious(rc));
2038 /* deprecated, not used any more */
2039 RETURN(-EOPNOTSUPP);
2043 * Handle quota control requests to consult current usage/limit, but also
2044 * to configure quota enforcement
2046 static int mdt_quotactl(struct mdt_thread_info *info)
2048 struct obd_export *exp = info->mti_exp;
2049 struct req_capsule *pill = info->mti_pill;
2050 struct obd_quotactl *oqctl, *repoqc;
2054 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
2056 RETURN(err_serious(-EPROTO));
2058 rc = req_capsule_server_pack(pill);
2060 RETURN(err_serious(rc));
2062 switch (oqctl->qc_cmd) {
2064 case LUSTRE_Q_INVALIDATE:
2065 case LUSTRE_Q_FINVALIDATE:
2069 /* deprecated, not used any more */
2070 RETURN(-EOPNOTSUPP);
2071 /* master quotactl */
2076 /* slave quotactl */
2081 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2085 /* map uid/gid for remote client */
2087 if (exp_connect_rmtclient(exp)) {
2088 struct lustre_idmap_table *idmap;
2090 idmap = mdt_req2med(mdt_info_req(info))->med_idmap;
2092 if (unlikely(oqctl->qc_cmd != Q_GETQUOTA &&
2093 oqctl->qc_cmd != Q_GETINFO))
2096 if (oqctl->qc_type == USRQUOTA)
2097 id = lustre_idmap_lookup_uid(NULL, idmap, 0,
2099 else if (oqctl->qc_type == GRPQUOTA)
2100 id = lustre_idmap_lookup_gid(NULL, idmap, 0,
2105 if (id == CFS_IDMAP_NOTFOUND) {
2106 CDEBUG(D_QUOTA, "no mapping for id %u\n", oqctl->qc_id);
2111 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
2113 RETURN(err_serious(-EFAULT));
2115 if (oqctl->qc_id != id)
2116 swap(oqctl->qc_id, id);
2118 switch (oqctl->qc_cmd) {
2120 /* master quotactl */
2124 /* XXX: not implemented yet. Will be when qmt support is
2126 CERROR("quotactl operation %d not implemented yet\n",
2128 RETURN(-EOPNOTSUPP);
2130 /* XXX: return no limit for now, just for testing purpose */
2131 memset(&oqctl->qc_dqblk, 0, sizeof(struct obd_dqblk));
2132 oqctl->qc_dqblk.dqb_valid = QIF_LIMITS;
2136 /* slave quotactl */
2139 rc = lquotactl_slv(info->mti_env, info->mti_mdt->mdt_bottom,
2144 CERROR("Unsupported quotactl command: %d\n", oqctl->qc_cmd);
2148 if (oqctl->qc_id != id)
2149 swap(oqctl->qc_id, id);
2156 * OBD PING and other handlers.
2158 static int mdt_obd_ping(struct mdt_thread_info *info)
2163 req_capsule_set(info->mti_pill, &RQF_OBD_PING);
2165 rc = target_handle_ping(mdt_info_req(info));
2167 rc = err_serious(rc);
2172 * OBD_IDX_READ handler
2174 static int mdt_obd_idx_read(struct mdt_thread_info *info)
2176 struct mdt_device *mdt = info->mti_mdt;
2177 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
2178 struct idx_info *req_ii, *rep_ii;
2182 memset(rdpg, 0, sizeof(*rdpg));
2183 req_capsule_set(info->mti_pill, &RQF_OBD_IDX_READ);
2185 /* extract idx_info buffer from request & reply */
2186 req_ii = req_capsule_client_get(info->mti_pill, &RMF_IDX_INFO);
2187 if (req_ii == NULL || req_ii->ii_magic != IDX_INFO_MAGIC)
2188 RETURN(err_serious(-EPROTO));
2190 rc = req_capsule_server_pack(info->mti_pill);
2192 RETURN(err_serious(rc));
2194 rep_ii = req_capsule_server_get(info->mti_pill, &RMF_IDX_INFO);
2196 RETURN(err_serious(-EFAULT));
2197 rep_ii->ii_magic = IDX_INFO_MAGIC;
2199 /* extract hash to start with */
2200 rdpg->rp_hash = req_ii->ii_hash_start;
2202 /* extract requested attributes */
2203 rdpg->rp_attrs = req_ii->ii_attrs;
2205 /* check that fid packed in request is valid and supported */
2206 if (!fid_is_sane(&req_ii->ii_fid))
2208 rep_ii->ii_fid = req_ii->ii_fid;
2211 rep_ii->ii_flags = req_ii->ii_flags;
2213 /* compute number of pages to allocate, ii_count is the number of 4KB
2215 if (req_ii->ii_count <= 0)
2216 GOTO(out, rc = -EFAULT);
2217 rdpg->rp_count = min_t(unsigned int, req_ii->ii_count << LU_PAGE_SHIFT,
2218 PTLRPC_MAX_BRW_SIZE);
2219 rdpg->rp_npages = (rdpg->rp_count + CFS_PAGE_SIZE -1) >> CFS_PAGE_SHIFT;
2221 /* allocate pages to store the containers */
2222 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
2223 if (rdpg->rp_pages == NULL)
2224 GOTO(out, rc = -ENOMEM);
2225 for (i = 0; i < rdpg->rp_npages; i++) {
2226 rdpg->rp_pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
2227 if (rdpg->rp_pages[i] == NULL)
2228 GOTO(out, rc = -ENOMEM);
2231 /* populate pages with key/record pairs */
2232 rc = dt_index_read(info->mti_env, mdt->mdt_bottom, rep_ii, rdpg);
2236 LASSERTF(rc <= rdpg->rp_count, "dt_index_read() returned more than "
2237 "asked %d > %d\n", rc, rdpg->rp_count);
2239 /* send pages to client */
2240 rc = mdt_sendpage(info, rdpg, rc);
2244 if (rdpg->rp_pages) {
2245 for (i = 0; i < rdpg->rp_npages; i++)
2246 if (rdpg->rp_pages[i])
2247 cfs_free_page(rdpg->rp_pages[i]);
2248 OBD_FREE(rdpg->rp_pages,
2249 rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
2254 static int mdt_obd_log_cancel(struct mdt_thread_info *info)
2256 return err_serious(-EOPNOTSUPP);
2259 static int mdt_obd_qc_callback(struct mdt_thread_info *info)
2261 return err_serious(-EOPNOTSUPP);
2269 /** clone llog ctxt from child (mdd)
2270 * This allows remote llog (replicator) access.
2271 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
2272 * context was originally set up, or we can handle them directly.
2273 * I choose the latter, but that means I need any llog
2274 * contexts set up by child to be accessable by the mdt. So we clone the
2275 * context into our context list here.
2277 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
2280 struct md_device *next = mdt->mdt_child;
2281 struct llog_ctxt *ctxt;
2284 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
2287 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
2288 if (rc || ctxt == NULL) {
2289 /* XXX: no support for changelogs yet - in another patch */
2290 /*CERROR("Can't get mdd ctxt %d\n", rc);*/
2291 #if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 3, 90, 0)
2292 #error "do not forget about changelogs"
2297 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
2299 CERROR("Can't set mdt ctxt %d\n", rc);
2304 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
2305 struct mdt_device *mdt, int idx)
2307 struct llog_ctxt *ctxt;
2309 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
2312 /* Put once for the get we just did, and once for the clone */
2313 llog_ctxt_put(ctxt);
2314 llog_ctxt_put(ctxt);
2318 static int mdt_llog_create(struct mdt_thread_info *info)
2322 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_CREATE);
2323 rc = llog_origin_handle_open(mdt_info_req(info));
2324 return (rc < 0 ? err_serious(rc) : rc);
2327 static int mdt_llog_destroy(struct mdt_thread_info *info)
2331 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_DESTROY);
2332 rc = llog_origin_handle_destroy(mdt_info_req(info));
2333 return (rc < 0 ? err_serious(rc) : rc);
2336 static int mdt_llog_read_header(struct mdt_thread_info *info)
2340 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
2341 rc = llog_origin_handle_read_header(mdt_info_req(info));
2342 return (rc < 0 ? err_serious(rc) : rc);
2345 static int mdt_llog_next_block(struct mdt_thread_info *info)
2349 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
2350 rc = llog_origin_handle_next_block(mdt_info_req(info));
2351 return (rc < 0 ? err_serious(rc) : rc);
2354 static int mdt_llog_prev_block(struct mdt_thread_info *info)
2358 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
2359 rc = llog_origin_handle_prev_block(mdt_info_req(info));
2360 return (rc < 0 ? err_serious(rc) : rc);
2367 static struct ldlm_callback_suite cbs = {
2368 .lcs_completion = ldlm_server_completion_ast,
2369 .lcs_blocking = ldlm_server_blocking_ast,
2370 .lcs_glimpse = ldlm_server_glimpse_ast
2373 static int mdt_enqueue(struct mdt_thread_info *info)
2375 struct ptlrpc_request *req;
2379 * info->mti_dlm_req already contains swapped and (if necessary)
2380 * converted dlm request.
2382 LASSERT(info->mti_dlm_req != NULL);
2384 req = mdt_info_req(info);
2385 rc = ldlm_handle_enqueue0(info->mti_mdt->mdt_namespace,
2386 req, info->mti_dlm_req, &cbs);
2387 info->mti_fail_id = OBD_FAIL_LDLM_REPLY;
2388 return rc ? err_serious(rc) : req->rq_status;
2391 static int mdt_convert(struct mdt_thread_info *info)
2394 struct ptlrpc_request *req;
2396 LASSERT(info->mti_dlm_req);
2397 req = mdt_info_req(info);
2398 rc = ldlm_handle_convert0(req, info->mti_dlm_req);
2399 return rc ? err_serious(rc) : req->rq_status;
2402 static int mdt_bl_callback(struct mdt_thread_info *info)
2404 CERROR("bl callbacks should not happen on MDS\n");
2406 return err_serious(-EOPNOTSUPP);
2409 static int mdt_cp_callback(struct mdt_thread_info *info)
2411 CERROR("cp callbacks should not happen on MDS\n");
2413 return err_serious(-EOPNOTSUPP);
2417 * sec context handlers
2419 static int mdt_sec_ctx_handle(struct mdt_thread_info *info)
2423 rc = mdt_handle_idmap(info);
2426 struct ptlrpc_request *req = mdt_info_req(info);
2429 opc = lustre_msg_get_opc(req->rq_reqmsg);
2430 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
2431 sptlrpc_svc_ctx_invalidate(req);
2434 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2439 static struct mdt_object *mdt_obj(struct lu_object *o)
2441 LASSERT(lu_device_is_mdt(o->lo_dev));
2442 return container_of0(o, struct mdt_object, mot_obj.mo_lu);
2445 struct mdt_object *mdt_object_new(const struct lu_env *env,
2446 struct mdt_device *d,
2447 const struct lu_fid *f)
2449 struct lu_object_conf conf = { .loc_flags = LOC_F_NEW };
2450 struct lu_object *o;
2451 struct mdt_object *m;
2454 CDEBUG(D_INFO, "Allocate object for "DFID"\n", PFID(f));
2455 o = lu_object_find(env, &d->mdt_md_dev.md_lu_dev, f, &conf);
2456 if (unlikely(IS_ERR(o)))
2457 m = (struct mdt_object *)o;
2463 struct mdt_object *mdt_object_find(const struct lu_env *env,
2464 struct mdt_device *d,
2465 const struct lu_fid *f)
2467 struct lu_object *o;
2468 struct mdt_object *m;
2471 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2472 o = lu_object_find(env, &d->mdt_md_dev.md_lu_dev, f, NULL);
2473 if (unlikely(IS_ERR(o)))
2474 m = (struct mdt_object *)o;
2481 * Asyncronous commit for mdt device.
2483 * Pass asynchonous commit call down the MDS stack.
2485 * \param env environment
2486 * \param mdt the mdt device
2488 static void mdt_device_commit_async(const struct lu_env *env,
2489 struct mdt_device *mdt)
2491 struct dt_device *dt = mdt->mdt_bottom;
2494 rc = dt->dd_ops->dt_commit_async(env, dt);
2495 if (unlikely(rc != 0))
2496 CWARN("async commit start failed with rc = %d", rc);
2500 * Mark the lock as "synchonous".
2502 * Mark the lock to deffer transaction commit to the unlock time.
2504 * \param lock the lock to mark as "synchonous"
2506 * \see mdt_is_lock_sync
2507 * \see mdt_save_lock
2509 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2511 lock->l_ast_data = (void*)1;
2515 * Check whehter the lock "synchonous" or not.
2517 * \param lock the lock to check
2518 * \retval 1 the lock is "synchonous"
2519 * \retval 0 the lock isn't "synchronous"
2521 * \see mdt_set_lock_sync
2522 * \see mdt_save_lock
2524 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2526 return lock->l_ast_data != NULL;
2530 * Blocking AST for mdt locks.
2532 * Starts transaction commit if in case of COS lock conflict or
2533 * deffers such a commit to the mdt_save_lock.
2535 * \param lock the lock which blocks a request or cancelling lock
2536 * \param desc unused
2537 * \param data unused
2538 * \param flag indicates whether this cancelling or blocking callback
2540 * \see ldlm_blocking_ast_nocheck
2542 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2543 void *data, int flag)
2545 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2546 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2550 if (flag == LDLM_CB_CANCELING)
2552 lock_res_and_lock(lock);
2553 if (lock->l_blocking_ast != mdt_blocking_ast) {
2554 unlock_res_and_lock(lock);
2557 if (mdt_cos_is_enabled(mdt) &&
2558 lock->l_req_mode & (LCK_PW | LCK_EX) &&
2559 lock->l_blocking_lock != NULL &&
2560 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
2561 mdt_set_lock_sync(lock);
2563 rc = ldlm_blocking_ast_nocheck(lock);
2565 /* There is no lock conflict if l_blocking_lock == NULL,
2566 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2567 * when the last reference to a local lock was released */
2568 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2571 rc = lu_env_init(&env, LCT_LOCAL);
2572 if (unlikely(rc != 0))
2573 CWARN("lu_env initialization failed with rc = %d,"
2574 "cannot start asynchronous commit\n", rc);
2576 mdt_device_commit_async(&env, mdt);
2582 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2583 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2585 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2586 ldlm_policy_data_t *policy = &info->mti_policy;
2587 struct ldlm_res_id *res_id = &info->mti_res_id;
2591 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2592 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2593 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2594 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2596 if (mdt_object_exists(o) < 0) {
2597 if (locality == MDT_CROSS_LOCK) {
2598 /* cross-ref object fix */
2599 ibits &= ~MDS_INODELOCK_UPDATE;
2600 ibits |= MDS_INODELOCK_LOOKUP;
2602 LASSERT(!(ibits & MDS_INODELOCK_UPDATE));
2603 LASSERT(ibits & MDS_INODELOCK_LOOKUP);
2605 /* No PDO lock on remote object */
2606 LASSERT(lh->mlh_type != MDT_PDO_LOCK);
2609 if (lh->mlh_type == MDT_PDO_LOCK) {
2610 /* check for exists after object is locked */
2611 if (mdt_object_exists(o) == 0) {
2612 /* Non-existent object shouldn't have PDO lock */
2615 /* Non-dir object shouldn't have PDO lock */
2616 if (!S_ISDIR(lu_object_attr(&o->mot_obj.mo_lu)))
2621 memset(policy, 0, sizeof(*policy));
2622 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2625 * Take PDO lock on whole directory and build correct @res_id for lock
2626 * on part of directory.
2628 if (lh->mlh_pdo_hash != 0) {
2629 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2630 mdt_lock_pdo_mode(info, o, lh);
2631 if (lh->mlh_pdo_mode != LCK_NL) {
2633 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2634 * is never going to be sent to client and we do not
2635 * want it slowed down due to possible cancels.
2637 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2638 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2639 policy, res_id, LDLM_FL_ATOMIC_CB,
2640 &info->mti_exp->exp_handle.h_cookie);
2646 * Finish res_id initializing by name hash marking part of
2647 * directory which is taking modification.
2649 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2652 policy->l_inodebits.bits = ibits;
2655 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2656 * going to be sent to client. If it is - mdt_intent_policy() path will
2657 * fix it up and turn FL_LOCAL flag off.
2659 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2660 res_id, LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB,
2661 &info->mti_exp->exp_handle.h_cookie);
2663 mdt_object_unlock(info, o, lh, 1);
2664 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2665 lh->mlh_pdo_hash != 0 &&
2666 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX)) {
2667 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 15);
2674 * Save a lock within request object.
2676 * Keep the lock referenced until whether client ACK or transaction
2677 * commit happens or release the lock immediately depending on input
2678 * parameters. If COS is ON, a write lock is converted to COS lock
2681 * \param info thead info object
2682 * \param h lock handle
2683 * \param mode lock mode
2684 * \param decref force immediate lock releasing
2687 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2688 ldlm_mode_t mode, int decref)
2692 if (lustre_handle_is_used(h)) {
2693 if (decref || !info->mti_has_trans ||
2694 !(mode & (LCK_PW | LCK_EX))){
2695 mdt_fid_unlock(h, mode);
2697 struct mdt_device *mdt = info->mti_mdt;
2698 struct ldlm_lock *lock = ldlm_handle2lock(h);
2699 struct ptlrpc_request *req = mdt_info_req(info);
2702 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2704 CDEBUG(D_HA, "request = %p reply state = %p"
2705 " transno = "LPD64"\n",
2706 req, req->rq_reply_state, req->rq_transno);
2707 if (mdt_cos_is_enabled(mdt)) {
2709 ldlm_lock_downgrade(lock, LCK_COS);
2712 ptlrpc_save_lock(req, h, mode, no_ack);
2713 if (mdt_is_lock_sync(lock)) {
2714 CDEBUG(D_HA, "found sync-lock,"
2715 " async commit started\n");
2716 mdt_device_commit_async(info->mti_env,
2719 LDLM_LOCK_PUT(lock);
2728 * Unlock mdt object.
2730 * Immeditely release the regular lock and the PDO lock or save the
2731 * lock in reqeuest and keep them referenced until client ACK or
2732 * transaction commit.
2734 * \param info thread info object
2735 * \param o mdt object
2736 * \param lh mdt lock handle referencing regular and PDO locks
2737 * \param decref force immediate lock releasing
2739 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2740 struct mdt_lock_handle *lh, int decref)
2744 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2745 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2750 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2751 const struct lu_fid *f,
2752 struct mdt_lock_handle *lh,
2755 struct mdt_object *o;
2757 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2761 rc = mdt_object_lock(info, o, lh, ibits,
2764 mdt_object_put(info->mti_env, o);
2771 void mdt_object_unlock_put(struct mdt_thread_info * info,
2772 struct mdt_object * o,
2773 struct mdt_lock_handle *lh,
2776 mdt_object_unlock(info, o, lh, decref);
2777 mdt_object_put(info->mti_env, o);
2780 static struct mdt_handler *mdt_handler_find(__u32 opc,
2781 struct mdt_opc_slice *supported)
2783 struct mdt_opc_slice *s;
2784 struct mdt_handler *h;
2787 for (s = supported; s->mos_hs != NULL; s++) {
2788 if (s->mos_opc_start <= opc && opc < s->mos_opc_end) {
2789 h = s->mos_hs + (opc - s->mos_opc_start);
2790 if (likely(h->mh_opc != 0))
2791 LASSERTF(h->mh_opc == opc,
2792 "opcode mismatch %d != %d\n",
2795 h = NULL; /* unsupported opc */
2802 static int mdt_lock_resname_compat(struct mdt_device *m,
2803 struct ldlm_request *req)
2805 /* XXX something... later. */
2809 static int mdt_lock_reply_compat(struct mdt_device *m, struct ldlm_reply *rep)
2811 /* XXX something... later. */
2816 * Generic code handling requests that have struct mdt_body passed in:
2818 * - extract mdt_body from request and save it in @info, if present;
2820 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2823 * - if HABEO_CORPUS flag is set for this request type check whether object
2824 * actually exists on storage (lu_object_exists()).
2827 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2829 const struct mdt_body *body;
2830 struct mdt_object *obj;
2831 const struct lu_env *env;
2832 struct req_capsule *pill;
2836 env = info->mti_env;
2837 pill = info->mti_pill;
2839 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2843 if (!(body->valid & OBD_MD_FLID))
2846 if (!fid_is_sane(&body->fid1)) {
2847 CERROR("Invalid fid: "DFID"\n", PFID(&body->fid1));
2852 * Do not get size or any capa fields before we check that request
2853 * contains capa actually. There are some requests which do not, for
2854 * instance MDS_IS_SUBDIR.
2856 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2857 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2858 mdt_set_capainfo(info, 0, &body->fid1,
2859 req_capsule_client_get(pill, &RMF_CAPA1));
2861 obj = mdt_object_find(env, info->mti_mdt, &body->fid1);
2863 if ((flags & HABEO_CORPUS) &&
2864 !mdt_object_exists(obj)) {
2865 mdt_object_put(env, obj);
2866 /* for capability renew ENOENT will be handled in
2868 if (body->valid & OBD_MD_FLOSSCAPA)
2873 info->mti_object = obj;
2882 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2884 struct req_capsule *pill = info->mti_pill;
2888 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2889 rc = mdt_body_unpack(info, flags);
2893 if (rc == 0 && (flags & HABEO_REFERO)) {
2895 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2896 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2897 info->mti_body->eadatasize);
2898 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2899 req_capsule_set_size(pill, &RMF_LOGCOOKIES,
2902 rc = req_capsule_server_pack(pill);
2907 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2909 struct md_device *next = m->mdt_child;
2911 return next->md_ops->mdo_init_capa_ctxt(env, next,
2912 m->mdt_opts.mo_mds_capa,
2913 m->mdt_capa_timeout,
2919 * Invoke handler for this request opc. Also do necessary preprocessing
2920 * (according to handler ->mh_flags), and post-processing (setting of
2921 * ->last_{xid,committed}).
2923 static int mdt_req_handle(struct mdt_thread_info *info,
2924 struct mdt_handler *h, struct ptlrpc_request *req)
2926 int rc, serious = 0;
2931 LASSERT(h->mh_act != NULL);
2932 LASSERT(h->mh_opc == lustre_msg_get_opc(req->rq_reqmsg));
2933 LASSERT(current->journal_info == NULL);
2936 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
2937 * to put same checks into handlers like mdt_close(), mdt_reint(),
2938 * etc., without talking to mdt authors first. Checking same thing
2939 * there again is useless and returning 0 error without packing reply
2940 * is buggy! Handlers either pack reply or return error.
2942 * We return 0 here and do not send any reply in order to emulate
2943 * network failure. Do not send any reply in case any of NET related
2944 * fail_id has occured.
2946 if (OBD_FAIL_CHECK_ORSET(h->mh_fail_id, OBD_FAIL_ONCE))
2950 flags = h->mh_flags;
2951 LASSERT(ergo(flags & (HABEO_CORPUS|HABEO_REFERO), h->mh_fmt != NULL));
2953 if (h->mh_fmt != NULL) {
2954 req_capsule_set(info->mti_pill, h->mh_fmt);
2955 rc = mdt_unpack_req_pack_rep(info, flags);
2958 if (rc == 0 && flags & MUTABOR &&
2959 req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
2960 /* should it be rq_status? */
2963 if (rc == 0 && flags & HABEO_CLAVIS) {
2964 struct ldlm_request *dlm_req;
2966 LASSERT(h->mh_fmt != NULL);
2968 dlm_req = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2969 if (dlm_req != NULL) {
2970 if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
2972 dlm_req->lock_desc.l_policy_data.\
2973 l_inodebits.bits == 0)) {
2975 * Lock without inodebits makes no sense and
2976 * will oops later in ldlm. If client miss to
2977 * set such bits, do not trigger ASSERTION.
2979 * For liblustre flock case, it maybe zero.
2983 if (info->mti_mdt->mdt_opts.mo_compat_resname)
2984 rc = mdt_lock_resname_compat(
2987 info->mti_dlm_req = dlm_req;
2994 /* capability setting changed via /proc, needs reinitialize ctxt */
2995 if (info->mti_mdt && info->mti_mdt->mdt_capa_conf) {
2996 mdt_init_capa_ctxt(info->mti_env, info->mti_mdt);
2997 info->mti_mdt->mdt_capa_conf = 0;
3000 if (likely(rc == 0)) {
3002 * Process request, there can be two types of rc:
3003 * 1) errors with msg unpack/pack, other failures outside the
3004 * operation itself. This is counted as serious errors;
3005 * 2) errors during fs operation, should be placed in rq_status
3008 rc = h->mh_act(info);
3010 !req->rq_no_reply && req->rq_reply_state == NULL) {
3011 DEBUG_REQ(D_ERROR, req, "MDT \"handler\" %s did not "
3012 "pack reply and returned 0 error\n",
3016 serious = is_serious(rc);
3017 rc = clear_serious(rc);
3021 req->rq_status = rc;
3024 * ELDLM_* codes which > 0 should be in rq_status only as well as
3025 * all non-serious errors.
3027 if (rc > 0 || !serious)
3030 LASSERT(current->journal_info == NULL);
3032 if (rc == 0 && (flags & HABEO_CLAVIS) &&
3033 info->mti_mdt->mdt_opts.mo_compat_resname) {
3034 struct ldlm_reply *dlmrep;
3036 dlmrep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3038 rc = mdt_lock_reply_compat(info->mti_mdt, dlmrep);
3041 /* If we're DISCONNECTing, the mdt_export_data is already freed */
3042 if (likely(rc == 0 && req->rq_export && h->mh_opc != MDS_DISCONNECT))
3043 target_committed_to_req(req);
3045 if (unlikely(req_is_replay(req) &&
3046 lustre_msg_get_transno(req->rq_reqmsg) == 0)) {
3047 DEBUG_REQ(D_ERROR, req, "transno is 0 during REPLAY");
3051 target_send_reply(req, rc, info->mti_fail_id);
3055 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
3057 lh->mlh_type = MDT_NUL_LOCK;
3058 lh->mlh_reg_lh.cookie = 0ull;
3059 lh->mlh_reg_mode = LCK_MINMODE;
3060 lh->mlh_pdo_lh.cookie = 0ull;
3061 lh->mlh_pdo_mode = LCK_MINMODE;
3064 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
3066 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
3067 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
3071 * Initialize fields of struct mdt_thread_info. Other fields are left in
3072 * uninitialized state, because it's too expensive to zero out whole
3073 * mdt_thread_info (> 1K) on each request arrival.
3075 static void mdt_thread_info_init(struct ptlrpc_request *req,
3076 struct mdt_thread_info *info)
3079 struct md_capainfo *ci;
3081 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
3082 info->mti_pill = &req->rq_pill;
3085 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3086 mdt_lock_handle_init(&info->mti_lh[i]);
3088 /* mdt device: it can be NULL while CONNECT */
3089 if (req->rq_export) {
3090 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
3091 info->mti_exp = req->rq_export;
3093 info->mti_mdt = NULL;
3094 info->mti_env = req->rq_svc_thread->t_env;
3095 ci = md_capainfo(info->mti_env);
3096 memset(ci, 0, sizeof *ci);
3097 if (req->rq_export) {
3098 if (exp_connect_rmtclient(req->rq_export))
3099 ci->mc_auth = LC_ID_CONVERT;
3100 else if (req->rq_export->exp_connect_flags &
3101 OBD_CONNECT_MDS_CAPA)
3102 ci->mc_auth = LC_ID_PLAIN;
3104 ci->mc_auth = LC_ID_NONE;
3107 info->mti_fail_id = OBD_FAIL_MDS_ALL_REPLY_NET;
3108 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
3109 info->mti_mos = NULL;
3111 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
3112 info->mti_body = NULL;
3113 info->mti_object = NULL;
3114 info->mti_dlm_req = NULL;
3115 info->mti_has_trans = 0;
3116 info->mti_no_need_trans = 0;
3117 info->mti_cross_ref = 0;
3118 info->mti_opdata = 0;
3119 info->mti_big_lmm_used = 0;
3121 /* To not check for split by default. */
3122 info->mti_spec.sp_ck_split = 0;
3123 info->mti_spec.no_create = 0;
3126 static void mdt_thread_info_fini(struct mdt_thread_info *info)
3130 req_capsule_fini(info->mti_pill);
3131 if (info->mti_object != NULL) {
3133 * freeing an object may lead to OSD level transaction, do not
3134 * let it mess with MDT. bz19385.
3136 info->mti_no_need_trans = 1;
3137 mdt_object_put(info->mti_env, info->mti_object);
3138 info->mti_object = NULL;
3140 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
3141 mdt_lock_handle_fini(&info->mti_lh[i]);
3142 info->mti_env = NULL;
3145 static int mdt_filter_recovery_request(struct ptlrpc_request *req,
3146 struct obd_device *obd, int *process)
3148 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3149 case MDS_CONNECT: /* This will never get here, but for completeness. */
3150 case OST_CONNECT: /* This will never get here, but for completeness. */
3151 case MDS_DISCONNECT:
3152 case OST_DISCONNECT:
3157 case MDS_DONE_WRITING:
3158 case MDS_SYNC: /* used in unmounting */
3164 *process = target_queue_recovery_request(req, obd);
3168 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
3175 * Handle recovery. Return:
3176 * +1: continue request processing;
3177 * -ve: abort immediately with the given error code;
3178 * 0: send reply with error code in req->rq_status;
3180 static int mdt_recovery(struct mdt_thread_info *info)
3182 struct ptlrpc_request *req = mdt_info_req(info);
3183 struct obd_device *obd;
3187 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3190 case SEC_CTX_INIT_CONT:
3196 rc = mdt_handle_idmap(info);
3205 if (unlikely(!class_connected_export(req->rq_export))) {
3206 CERROR("operation %d on unconnected MDS from %s\n",
3207 lustre_msg_get_opc(req->rq_reqmsg),
3208 libcfs_id2str(req->rq_peer));
3209 /* FIXME: For CMD cleanup, when mds_B stop, the req from
3210 * mds_A will get -ENOTCONN(especially for ping req),
3211 * which will cause that mds_A deactive timeout, then when
3212 * mds_A cleanup, the cleanup process will be suspended since
3213 * deactive timeout is not zero.
3215 req->rq_status = -ENOTCONN;
3216 target_send_reply(req, -ENOTCONN, info->mti_fail_id);
3220 /* sanity check: if the xid matches, the request must be marked as a
3221 * resent or replayed */
3222 if (req_xid_is_last(req)) {
3223 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
3224 (MSG_RESENT | MSG_REPLAY))) {
3225 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches last_xid, "
3226 "expected REPLAY or RESENT flag (%x)", req->rq_xid,
3227 lustre_msg_get_flags(req->rq_reqmsg));
3229 req->rq_status = -ENOTCONN;
3234 /* else: note the opposite is not always true; a RESENT req after a
3235 * failover will usually not match the last_xid, since it was likely
3236 * never committed. A REPLAYed request will almost never match the
3237 * last xid, however it could for a committed, but still retained,
3240 obd = req->rq_export->exp_obd;
3242 /* Check for aborted recovery... */
3243 if (unlikely(obd->obd_recovering)) {
3246 DEBUG_REQ(D_INFO, req, "Got new replay");
3247 rc = mdt_filter_recovery_request(req, obd, &should_process);
3248 if (rc != 0 || !should_process)
3250 else if (should_process < 0) {
3251 req->rq_status = should_process;
3252 rc = ptlrpc_error(req);
3259 static int mdt_msg_check_version(struct lustre_msg *msg)
3263 switch (lustre_msg_get_opc(msg)) {
3265 case MDS_DISCONNECT:
3268 case SEC_CTX_INIT_CONT:
3271 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
3273 CERROR("bad opc %u version %08x, expecting %08x\n",
3274 lustre_msg_get_opc(msg),
3275 lustre_msg_get_version(msg),
3276 LUSTRE_OBD_VERSION);
3280 case MDS_GETATTR_NAME:
3287 case MDS_DONE_WRITING:
3294 case MDS_QUOTACHECK:
3300 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
3302 CERROR("bad opc %u version %08x, expecting %08x\n",
3303 lustre_msg_get_opc(msg),
3304 lustre_msg_get_version(msg),
3305 LUSTRE_MDS_VERSION);
3309 case LDLM_BL_CALLBACK:
3310 case LDLM_CP_CALLBACK:
3311 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
3313 CERROR("bad opc %u version %08x, expecting %08x\n",
3314 lustre_msg_get_opc(msg),
3315 lustre_msg_get_version(msg),
3316 LUSTRE_DLM_VERSION);
3318 case OBD_LOG_CANCEL:
3319 case LLOG_ORIGIN_HANDLE_CREATE:
3320 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
3321 case LLOG_ORIGIN_HANDLE_READ_HEADER:
3322 case LLOG_ORIGIN_HANDLE_CLOSE:
3323 case LLOG_ORIGIN_HANDLE_DESTROY:
3324 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
3326 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
3328 CERROR("bad opc %u version %08x, expecting %08x\n",
3329 lustre_msg_get_opc(msg),
3330 lustre_msg_get_version(msg),
3331 LUSTRE_LOG_VERSION);
3334 CERROR("MDS unknown opcode %d\n", lustre_msg_get_opc(msg));
3340 static int mdt_handle0(struct ptlrpc_request *req,
3341 struct mdt_thread_info *info,
3342 struct mdt_opc_slice *supported)
3344 struct mdt_handler *h;
3345 struct lustre_msg *msg;
3350 if (OBD_FAIL_CHECK_ORSET(OBD_FAIL_MDS_ALL_REQUEST_NET, OBD_FAIL_ONCE))
3353 LASSERT(current->journal_info == NULL);
3355 msg = req->rq_reqmsg;
3356 rc = mdt_msg_check_version(msg);
3357 if (likely(rc == 0)) {
3358 rc = mdt_recovery(info);
3359 if (likely(rc == +1)) {
3360 h = mdt_handler_find(lustre_msg_get_opc(msg),
3362 if (likely(h != NULL)) {
3363 rc = mdt_req_handle(info, h, req);
3365 CERROR("The unsupported opc: 0x%x\n",
3366 lustre_msg_get_opc(msg) );
3367 req->rq_status = -ENOTSUPP;
3368 rc = ptlrpc_error(req);
3373 CERROR(LUSTRE_MDT_NAME" drops mal-formed request\n");
3378 * MDT handler function called by ptlrpc service thread when request comes.
3380 * XXX common "target" functionality should be factored into separate module
3381 * shared by mdt, ost and stand-alone services like fld.
3383 static int mdt_handle_common(struct ptlrpc_request *req,
3384 struct mdt_opc_slice *supported)
3387 struct mdt_thread_info *info;
3391 env = req->rq_svc_thread->t_env;
3392 LASSERT(env != NULL);
3393 LASSERT(env->le_ses != NULL);
3394 LASSERT(env->le_ctx.lc_thread == req->rq_svc_thread);
3395 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3396 LASSERT(info != NULL);
3398 mdt_thread_info_init(req, info);
3400 rc = mdt_handle0(req, info, supported);
3402 mdt_thread_info_fini(info);
3407 * This is called from recovery code as handler of _all_ RPC types, FLD and SEQ
3410 int mdt_recovery_handle(struct ptlrpc_request *req)
3415 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3417 rc = mdt_handle_common(req, mdt_fld_handlers);
3420 rc = mdt_handle_common(req, mdt_seq_handlers);
3423 rc = mdt_handle_common(req, mdt_regular_handlers);
3430 static int mdt_regular_handle(struct ptlrpc_request *req)
3432 return mdt_handle_common(req, mdt_regular_handlers);
3435 static int mdt_readpage_handle(struct ptlrpc_request *req)
3437 return mdt_handle_common(req, mdt_readpage_handlers);
3440 static int mdt_xmds_handle(struct ptlrpc_request *req)
3442 return mdt_handle_common(req, mdt_xmds_handlers);
3445 static int mdt_mdsc_handle(struct ptlrpc_request *req)
3447 return mdt_handle_common(req, mdt_seq_handlers);
3450 static int mdt_mdss_handle(struct ptlrpc_request *req)
3452 return mdt_handle_common(req, mdt_seq_handlers);
3455 static int mdt_dtss_handle(struct ptlrpc_request *req)
3457 return mdt_handle_common(req, mdt_seq_handlers);
3460 static int mdt_fld_handle(struct ptlrpc_request *req)
3462 return mdt_handle_common(req, mdt_fld_handlers);
3479 static int mdt_intent_getattr(enum mdt_it_code opcode,
3480 struct mdt_thread_info *info,
3481 struct ldlm_lock **,
3483 static int mdt_intent_reint(enum mdt_it_code opcode,
3484 struct mdt_thread_info *info,
3485 struct ldlm_lock **,
3488 static struct mdt_it_flavor {
3489 const struct req_format *it_fmt;
3491 int (*it_act)(enum mdt_it_code ,
3492 struct mdt_thread_info *,
3493 struct ldlm_lock **,
3496 } mdt_it_flavor[] = {
3498 .it_fmt = &RQF_LDLM_INTENT,
3499 /*.it_flags = HABEO_REFERO,*/
3501 .it_act = mdt_intent_reint,
3502 .it_reint = REINT_OPEN
3505 .it_fmt = &RQF_LDLM_INTENT,
3506 .it_flags = MUTABOR,
3507 .it_act = mdt_intent_reint,
3508 .it_reint = REINT_OPEN
3511 .it_fmt = &RQF_LDLM_INTENT,
3512 .it_flags = MUTABOR,
3513 .it_act = mdt_intent_reint,
3514 .it_reint = REINT_CREATE
3516 [MDT_IT_GETATTR] = {
3517 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3518 .it_flags = HABEO_REFERO,
3519 .it_act = mdt_intent_getattr
3521 [MDT_IT_READDIR] = {
3527 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3528 .it_flags = HABEO_REFERO,
3529 .it_act = mdt_intent_getattr
3532 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
3533 .it_flags = MUTABOR,
3535 .it_reint = REINT_UNLINK
3539 .it_flags = MUTABOR,
3542 [MDT_IT_GETXATTR] = {
3548 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3549 .it_flags = HABEO_REFERO,
3550 .it_act = mdt_intent_getattr
3554 int mdt_intent_lock_replace(struct mdt_thread_info *info,
3555 struct ldlm_lock **lockp,
3556 struct ldlm_lock *new_lock,
3557 struct mdt_lock_handle *lh,
3560 struct ptlrpc_request *req = mdt_info_req(info);
3561 struct ldlm_lock *lock = *lockp;
3564 * Get new lock only for cases when possible resent did not find any
3567 if (new_lock == NULL)
3568 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3570 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3571 lh->mlh_reg_lh.cookie = 0;
3575 LASSERTF(new_lock != NULL,
3576 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
3579 * If we've already given this lock to a client once, then we should
3580 * have no readers or writers. Otherwise, we should have one reader
3581 * _or_ writer ref (which will be zeroed below) before returning the
3584 if (new_lock->l_export == req->rq_export) {
3585 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3587 LASSERT(new_lock->l_export == NULL);
3588 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3593 if (new_lock->l_export == req->rq_export) {
3595 * Already gave this to the client, which means that we
3596 * reconstructed a reply.
3598 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3600 lh->mlh_reg_lh.cookie = 0;
3601 RETURN(ELDLM_LOCK_REPLACED);
3605 * Fixup the lock to be given to the client.
3607 lock_res_and_lock(new_lock);
3608 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3609 * possible blocking AST. */
3610 while (new_lock->l_readers > 0) {
3611 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3612 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3613 new_lock->l_readers--;
3615 while (new_lock->l_writers > 0) {
3616 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3617 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3618 new_lock->l_writers--;
3621 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3622 new_lock->l_blocking_ast = lock->l_blocking_ast;
3623 new_lock->l_completion_ast = lock->l_completion_ast;
3624 new_lock->l_remote_handle = lock->l_remote_handle;
3625 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3627 unlock_res_and_lock(new_lock);
3629 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3630 &new_lock->l_remote_handle,
3631 &new_lock->l_exp_hash);
3633 LDLM_LOCK_RELEASE(new_lock);
3634 lh->mlh_reg_lh.cookie = 0;
3636 RETURN(ELDLM_LOCK_REPLACED);
3639 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3640 struct ldlm_lock *new_lock,
3641 struct ldlm_lock **old_lock,
3642 struct mdt_lock_handle *lh)
3644 struct ptlrpc_request *req = mdt_info_req(info);
3645 struct obd_export *exp = req->rq_export;
3646 struct lustre_handle remote_hdl;
3647 struct ldlm_request *dlmreq;
3648 struct ldlm_lock *lock;
3650 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3653 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3654 remote_hdl = dlmreq->lock_handle[0];
3656 /* In the function below, .hs_keycmp resolves to
3657 * ldlm_export_lock_keycmp() */
3658 /* coverity[overrun-buffer-val] */
3659 lock = cfs_hash_lookup(exp->exp_lock_hash, &remote_hdl);
3661 if (lock != new_lock) {
3662 lh->mlh_reg_lh.cookie = lock->l_handle.h_cookie;
3663 lh->mlh_reg_mode = lock->l_granted_mode;
3665 LDLM_DEBUG(lock, "Restoring lock cookie");
3666 DEBUG_REQ(D_DLMTRACE, req,
3667 "restoring lock cookie "LPX64,
3668 lh->mlh_reg_lh.cookie);
3670 *old_lock = LDLM_LOCK_GET(lock);
3671 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
3675 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
3679 * If the xid matches, then we know this is a resent request, and allow
3680 * it. (It's probably an OPEN, for which we don't send a lock.
3682 if (req_xid_is_last(req))
3686 * This remote handle isn't enqueued, so we never received or processed
3687 * this request. Clear MSG_RESENT, because it can be handled like any
3688 * normal request now.
3690 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3692 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
3696 static int mdt_intent_getattr(enum mdt_it_code opcode,
3697 struct mdt_thread_info *info,
3698 struct ldlm_lock **lockp,
3701 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3702 struct ldlm_lock *new_lock = NULL;
3704 struct ldlm_reply *ldlm_rep;
3705 struct ptlrpc_request *req;
3706 struct mdt_body *reqbody;
3707 struct mdt_body *repbody;
3711 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3714 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3717 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
3718 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
3719 repbody->eadatasize = 0;
3720 repbody->aclsize = 0;
3724 child_bits = MDS_INODELOCK_LOOKUP;
3726 case MDT_IT_GETATTR:
3727 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE;
3729 case MDT_IT_LAYOUT: {
3730 static int printed = 0;
3733 CERROR("layout lock not supported by this version\n");
3736 GOTO(out_shrink, rc = -EINVAL);
3740 CERROR("Unsupported intent (%d)\n", opcode);
3741 GOTO(out_shrink, rc = -EINVAL);
3744 rc = mdt_init_ucred(info, reqbody);
3746 GOTO(out_shrink, rc);
3748 req = info->mti_pill->rc_req;
3749 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3750 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3752 /* Get lock from request for possible resent case. */
3753 mdt_intent_fixup_resent(info, *lockp, &new_lock, lhc);
3755 ldlm_rep->lock_policy_res2 =
3756 mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3758 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3759 ldlm_rep->lock_policy_res2 = 0;
3760 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3761 ldlm_rep->lock_policy_res2) {
3762 lhc->mlh_reg_lh.cookie = 0ull;
3763 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3766 rc = mdt_intent_lock_replace(info, lockp, new_lock, lhc, flags);
3769 mdt_exit_ucred(info);
3771 mdt_client_compatibility(info);
3772 rc2 = mdt_fix_reply(info);
3778 static int mdt_intent_reint(enum mdt_it_code opcode,
3779 struct mdt_thread_info *info,
3780 struct ldlm_lock **lockp,
3783 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3784 struct ldlm_reply *rep = NULL;
3788 static const struct req_format *intent_fmts[REINT_MAX] = {
3789 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3790 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3795 opc = mdt_reint_opcode(info, intent_fmts);
3799 if (mdt_it_flavor[opcode].it_reint != opc) {
3800 CERROR("Reint code %ld doesn't match intent: %d\n",
3802 RETURN(err_serious(-EPROTO));
3805 /* Get lock from request for possible resent case. */
3806 mdt_intent_fixup_resent(info, *lockp, NULL, lhc);
3808 rc = mdt_reint_internal(info, lhc, opc);
3810 /* Check whether the reply has been packed successfully. */
3811 if (mdt_info_req(info)->rq_repmsg != NULL)
3812 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3814 RETURN(err_serious(-EFAULT));
3816 /* MDC expects this in any case */
3818 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3820 /* Cross-ref case, the lock should be returned to the client */
3821 if (rc == -EREMOTE) {
3822 LASSERT(lustre_handle_is_used(&lhc->mlh_reg_lh));
3823 rep->lock_policy_res2 = 0;
3824 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3827 rep->lock_policy_res2 = clear_serious(rc);
3829 if (rep->lock_policy_res2 == -ENOENT &&
3830 mdt_get_disposition(rep, DISP_LOOKUP_NEG))
3831 rep->lock_policy_res2 = 0;
3833 if (rc == -ENOTCONN || rc == -ENODEV ||
3834 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3836 * If it is the disconnect error (ENODEV & ENOCONN), the error
3837 * will be returned by rq_status, and client at ptlrpc layer
3838 * will detect this, then disconnect, reconnect the import
3839 * immediately, instead of impacting the following the rpc.
3841 lhc->mlh_reg_lh.cookie = 0ull;
3845 * For other cases, the error will be returned by intent.
3846 * and client will retrieve the result from intent.
3849 * FIXME: when open lock is finished, that should be
3852 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3853 LASSERTF(rc == 0, "Error occurred but lock handle "
3854 "is still in use\n");
3855 rep->lock_policy_res2 = 0;
3856 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3859 lhc->mlh_reg_lh.cookie = 0ull;
3860 RETURN(ELDLM_LOCK_ABORTED);
3865 static int mdt_intent_code(long itcode)
3873 case IT_OPEN|IT_CREAT:
3880 rc = MDT_IT_READDIR;
3883 rc = MDT_IT_GETATTR;
3895 rc = MDT_IT_GETXATTR;
3901 CERROR("Unknown intent opcode: %ld\n", itcode);
3908 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
3909 struct ldlm_lock **lockp, int flags)
3911 struct req_capsule *pill;
3912 struct mdt_it_flavor *flv;
3917 opc = mdt_intent_code(itopc);
3921 pill = info->mti_pill;
3922 flv = &mdt_it_flavor[opc];
3924 if (flv->it_fmt != NULL)
3925 req_capsule_extend(pill, flv->it_fmt);
3927 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
3929 struct ptlrpc_request *req = mdt_info_req(info);
3930 if (flv->it_flags & MUTABOR &&
3931 req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
3934 if (rc == 0 && flv->it_act != NULL) {
3935 /* execute policy */
3936 rc = flv->it_act(opc, info, lockp, flags);
3943 static int mdt_intent_policy(struct ldlm_namespace *ns,
3944 struct ldlm_lock **lockp, void *req_cookie,
3945 ldlm_mode_t mode, int flags, void *data)
3947 struct mdt_thread_info *info;
3948 struct ptlrpc_request *req = req_cookie;
3949 struct ldlm_intent *it;
3950 struct req_capsule *pill;
3955 LASSERT(req != NULL);
3957 info = lu_context_key_get(&req->rq_svc_thread->t_env->le_ctx,
3959 LASSERT(info != NULL);
3960 pill = info->mti_pill;
3961 LASSERT(pill->rc_req == req);
3963 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
3964 req_capsule_extend(pill, &RQF_LDLM_INTENT);
3965 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
3967 rc = mdt_intent_opc(it->opc, info, lockp, flags);
3971 /* Lock without inodebits makes no sense and will oops
3972 * later in ldlm. Let's check it now to see if we have
3973 * ibits corrupted somewhere in mdt_intent_opc().
3974 * The case for client miss to set ibits has been
3975 * processed by others. */
3976 LASSERT(ergo(info->mti_dlm_req->lock_desc.l_resource.\
3977 lr_type == LDLM_IBITS,
3978 info->mti_dlm_req->lock_desc.\
3979 l_policy_data.l_inodebits.bits != 0));
3981 rc = err_serious(-EFAULT);
3983 /* No intent was provided */
3984 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
3985 rc = req_capsule_server_pack(pill);
3987 rc = err_serious(rc);
3992 static int mdt_seq_fini(const struct lu_env *env,
3993 struct mdt_device *m)
3995 struct md_site *ms = mdt_md_site(m);
3999 if (ms->ms_server_seq) {
4000 seq_server_fini(ms->ms_server_seq, env);
4001 OBD_FREE_PTR(ms->ms_server_seq);
4002 ms->ms_server_seq = NULL;
4005 if (ms->ms_control_seq) {
4006 seq_server_fini(ms->ms_control_seq, env);
4007 OBD_FREE_PTR(ms->ms_control_seq);
4008 ms->ms_control_seq = NULL;
4011 if (ms->ms_client_seq) {
4012 seq_client_fini(ms->ms_client_seq);
4013 OBD_FREE_PTR(ms->ms_client_seq);
4014 ms->ms_client_seq = NULL;
4021 static int mdt_seq_init(const struct lu_env *env,
4023 struct mdt_device *m)
4030 ms = mdt_md_site(m);
4033 * This is sequence-controller node. Init seq-controller server on local
4036 if (ms->ms_node_id == 0) {
4037 LASSERT(ms->ms_control_seq == NULL);
4039 OBD_ALLOC_PTR(ms->ms_control_seq);
4040 if (ms->ms_control_seq == NULL)
4043 rc = seq_server_init(ms->ms_control_seq,
4044 m->mdt_bottom, uuid,
4045 LUSTRE_SEQ_CONTROLLER,
4050 GOTO(out_seq_fini, rc);
4052 OBD_ALLOC_PTR(ms->ms_client_seq);
4053 if (ms->ms_client_seq == NULL)
4054 GOTO(out_seq_fini, rc = -ENOMEM);
4056 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
4057 if (prefix == NULL) {
4058 OBD_FREE_PTR(ms->ms_client_seq);
4059 GOTO(out_seq_fini, rc = -ENOMEM);
4062 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
4066 * Init seq-controller client after seq-controller server is
4067 * ready. Pass ms->ms_control_seq to it for direct talking.
4069 rc = seq_client_init(ms->ms_client_seq, NULL,
4070 LUSTRE_SEQ_METADATA, prefix,
4071 ms->ms_control_seq);
4072 OBD_FREE(prefix, MAX_OBD_NAME + 5);
4075 GOTO(out_seq_fini, rc);
4078 /* Init seq-server on local MDT */
4079 LASSERT(ms->ms_server_seq == NULL);
4081 OBD_ALLOC_PTR(ms->ms_server_seq);
4082 if (ms->ms_server_seq == NULL)
4083 GOTO(out_seq_fini, rc = -ENOMEM);
4085 rc = seq_server_init(ms->ms_server_seq,
4086 m->mdt_bottom, uuid,
4091 GOTO(out_seq_fini, rc = -ENOMEM);
4093 /* Assign seq-controller client to local seq-server. */
4094 if (ms->ms_node_id == 0) {
4095 LASSERT(ms->ms_client_seq != NULL);
4097 rc = seq_server_set_cli(ms->ms_server_seq,
4105 mdt_seq_fini(env, m);
4110 * Init client sequence manager which is used by local MDS to talk to sequence
4111 * controller on remote node.
4113 static int mdt_seq_init_cli(const struct lu_env *env,
4114 struct mdt_device *m,
4115 struct lustre_cfg *cfg)
4117 struct md_site *ms = mdt_md_site(m);
4118 struct obd_device *mdc;
4119 struct obd_uuid *uuidp, *mdcuuidp;
4120 char *uuid_str, *mdc_uuid_str;
4123 struct mdt_thread_info *info;
4124 char *p, *index_string = lustre_cfg_string(cfg, 2);
4127 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4128 uuidp = &info->mti_u.uuid[0];
4129 mdcuuidp = &info->mti_u.uuid[1];
4131 LASSERT(index_string);
4133 index = simple_strtol(index_string, &p, 10);
4135 CERROR("Invalid index in lustre_cgf, offset 2\n");
4139 /* check if this is adding the first MDC and controller is not yet
4141 if (index != 0 || ms->ms_client_seq)
4144 uuid_str = lustre_cfg_string(cfg, 1);
4145 mdc_uuid_str = lustre_cfg_string(cfg, 4);
4146 obd_str2uuid(uuidp, uuid_str);
4147 obd_str2uuid(mdcuuidp, mdc_uuid_str);
4149 mdc = class_find_client_obd(uuidp, LUSTRE_MDC_NAME, mdcuuidp);
4151 CERROR("can't find controller MDC by uuid %s\n",
4154 } else if (!mdc->obd_set_up) {
4155 CERROR("target %s not set up\n", mdc->obd_name);
4158 LASSERT(ms->ms_control_exp);
4159 OBD_ALLOC_PTR(ms->ms_client_seq);
4160 if (ms->ms_client_seq != NULL) {
4163 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
4167 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
4170 rc = seq_client_init(ms->ms_client_seq,
4172 LUSTRE_SEQ_METADATA,
4174 OBD_FREE(prefix, MAX_OBD_NAME + 5);
4181 LASSERT(ms->ms_server_seq != NULL);
4182 rc = seq_server_set_cli(ms->ms_server_seq, ms->ms_client_seq,
4189 static void mdt_seq_fini_cli(struct mdt_device *m)
4195 ms = mdt_md_site(m);
4198 if (ms->ms_server_seq)
4199 seq_server_set_cli(ms->ms_server_seq,
4202 if (ms->ms_control_exp) {
4203 class_export_put(ms->ms_control_exp);
4204 ms->ms_control_exp = NULL;
4213 static int mdt_fld_fini(const struct lu_env *env,
4214 struct mdt_device *m)
4216 struct md_site *ms = mdt_md_site(m);
4219 if (ms && ms->ms_server_fld) {
4220 fld_server_fini(ms->ms_server_fld, env);
4221 OBD_FREE_PTR(ms->ms_server_fld);
4222 ms->ms_server_fld = NULL;
4228 static int mdt_fld_init(const struct lu_env *env,
4230 struct mdt_device *m)
4236 ms = mdt_md_site(m);
4238 OBD_ALLOC_PTR(ms->ms_server_fld);
4239 if (ms->ms_server_fld == NULL)
4240 RETURN(rc = -ENOMEM);
4242 rc = fld_server_init(ms->ms_server_fld,
4243 m->mdt_bottom, uuid,
4244 env, ms->ms_node_id);
4246 OBD_FREE_PTR(ms->ms_server_fld);
4247 ms->ms_server_fld = NULL;
4254 /* device init/fini methods */
4255 static void mdt_stop_ptlrpc_service(struct mdt_device *m)
4258 if (m->mdt_regular_service != NULL) {
4259 ptlrpc_unregister_service(m->mdt_regular_service);
4260 m->mdt_regular_service = NULL;
4262 if (m->mdt_readpage_service != NULL) {
4263 ptlrpc_unregister_service(m->mdt_readpage_service);
4264 m->mdt_readpage_service = NULL;
4266 if (m->mdt_xmds_service != NULL) {
4267 ptlrpc_unregister_service(m->mdt_xmds_service);
4268 m->mdt_xmds_service = NULL;
4270 if (m->mdt_setattr_service != NULL) {
4271 ptlrpc_unregister_service(m->mdt_setattr_service);
4272 m->mdt_setattr_service = NULL;
4274 if (m->mdt_mdsc_service != NULL) {
4275 ptlrpc_unregister_service(m->mdt_mdsc_service);
4276 m->mdt_mdsc_service = NULL;
4278 if (m->mdt_mdss_service != NULL) {
4279 ptlrpc_unregister_service(m->mdt_mdss_service);
4280 m->mdt_mdss_service = NULL;
4282 if (m->mdt_dtss_service != NULL) {
4283 ptlrpc_unregister_service(m->mdt_dtss_service);
4284 m->mdt_dtss_service = NULL;
4286 if (m->mdt_fld_service != NULL) {
4287 ptlrpc_unregister_service(m->mdt_fld_service);
4288 m->mdt_fld_service = NULL;
4293 static int mdt_start_ptlrpc_service(struct mdt_device *m)
4295 static struct ptlrpc_service_conf conf;
4296 cfs_proc_dir_entry_t *procfs_entry;
4300 m->mdt_ldlm_client = &m->mdt_md_dev.md_lu_dev.ld_obd->obd_ldlm_client;
4301 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
4302 "mdt_ldlm_client", m->mdt_ldlm_client);
4304 procfs_entry = m->mdt_md_dev.md_lu_dev.ld_obd->obd_proc_entry;
4306 conf = (typeof(conf)) {
4307 .psc_name = LUSTRE_MDT_NAME,
4308 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4310 .bc_nbufs = MDS_NBUFS,
4311 .bc_buf_size = MDS_BUFSIZE,
4312 .bc_req_max_size = MDS_MAXREQSIZE,
4313 .bc_rep_max_size = MDS_MAXREPSIZE,
4314 .bc_req_portal = MDS_REQUEST_PORTAL,
4315 .bc_rep_portal = MDC_REPLY_PORTAL,
4318 * We'd like to have a mechanism to set this on a per-device
4319 * basis, but alas...
4322 .tc_thr_name = LUSTRE_MDT_NAME,
4323 .tc_thr_factor = MDT_THR_FACTOR,
4324 .tc_nthrs_init = MDT_NTHRS_INIT,
4325 .tc_nthrs_base = MDT_NTHRS_BASE,
4326 .tc_nthrs_max = MDT_NTHRS_MAX,
4327 .tc_nthrs_user = mds_num_threads,
4328 .tc_cpu_affinity = 1,
4329 .tc_ctx_tags = LCT_MD_THREAD,
4332 .cc_pattern = mds_num_cpts,
4335 .so_req_handler = mdt_regular_handle,
4336 .so_req_printer = target_print_req,
4337 .so_hpreq_handler = ptlrpc_hpreq_handler,
4340 m->mdt_regular_service = ptlrpc_register_service(&conf, procfs_entry);
4341 if (IS_ERR(m->mdt_regular_service)) {
4342 rc = PTR_ERR(m->mdt_regular_service);
4343 CERROR("failed to start regular mdt service: %d\n", rc);
4344 m->mdt_regular_service = NULL;
4350 * readpage service configuration. Parameters have to be adjusted,
4353 memset(&conf, 0, sizeof(conf));
4354 conf = (typeof(conf)) {
4355 .psc_name = LUSTRE_MDT_NAME "_readpage",
4356 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4358 .bc_nbufs = MDS_NBUFS,
4359 .bc_buf_size = MDS_BUFSIZE,
4360 .bc_req_max_size = MDS_MAXREQSIZE,
4361 .bc_rep_max_size = MDS_MAXREPSIZE,
4362 .bc_req_portal = MDS_READPAGE_PORTAL,
4363 .bc_rep_portal = MDC_REPLY_PORTAL,
4366 .tc_thr_name = "mdt_rdpg",
4367 .tc_thr_factor = MDT_RDPG_THR_FACTOR,
4368 .tc_nthrs_init = MDT_RDPG_NTHRS_INIT,
4369 .tc_nthrs_base = MDT_RDPG_NTHRS_BASE,
4370 .tc_nthrs_max = MDT_RDPG_NTHRS_MAX,
4371 .tc_nthrs_user = mds_rdpg_num_threads,
4372 .tc_cpu_affinity = 1,
4373 .tc_ctx_tags = LCT_MD_THREAD,
4376 .cc_pattern = mds_rdpg_num_cpts,
4379 .so_req_handler = mdt_readpage_handle,
4380 .so_req_printer = target_print_req,
4381 .so_hpreq_handler = NULL,
4384 m->mdt_readpage_service = ptlrpc_register_service(&conf, procfs_entry);
4385 if (IS_ERR(m->mdt_readpage_service)) {
4386 rc = PTR_ERR(m->mdt_readpage_service);
4387 CERROR("failed to start readpage service: %d\n", rc);
4388 m->mdt_readpage_service = NULL;
4390 GOTO(err_mdt_svc, rc);
4394 * setattr service configuration.
4396 * XXX To keep the compatibility with old client(< 2.2), we need to
4397 * preserve this portal for a certain time, it should be removed
4398 * eventually. LU-617.
4400 memset(&conf, 0, sizeof(conf));
4401 conf = (typeof(conf)) {
4402 .psc_name = LUSTRE_MDT_NAME "_setattr",
4403 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4405 .bc_nbufs = MDS_NBUFS,
4406 .bc_buf_size = MDS_BUFSIZE,
4407 .bc_req_max_size = MDS_MAXREQSIZE,
4408 .bc_rep_max_size = MDS_MAXREPSIZE,
4409 .bc_req_portal = MDS_SETATTR_PORTAL,
4410 .bc_rep_portal = MDC_REPLY_PORTAL,
4413 .tc_thr_name = "mdt_attr",
4414 .tc_thr_factor = MDT_SETA_THR_FACTOR,
4415 .tc_nthrs_init = MDT_SETA_NTHRS_INIT,
4416 .tc_nthrs_base = MDT_SETA_NTHRS_BASE,
4417 .tc_nthrs_max = MDT_SETA_NTHRS_MAX,
4418 .tc_nthrs_user = mds_attr_num_threads,
4419 .tc_cpu_affinity = 1,
4420 .tc_ctx_tags = LCT_MD_THREAD,
4423 .cc_pattern = mds_attr_num_cpts,
4426 .so_req_handler = mdt_regular_handle,
4427 .so_req_printer = target_print_req,
4428 .so_hpreq_handler = NULL,
4431 m->mdt_setattr_service = ptlrpc_register_service(&conf, procfs_entry);
4432 if (IS_ERR(m->mdt_setattr_service)) {
4433 rc = PTR_ERR(m->mdt_setattr_service);
4434 CERROR("failed to start setattr service: %d\n", rc);
4435 m->mdt_setattr_service = NULL;
4437 GOTO(err_mdt_svc, rc);
4441 * sequence controller service configuration
4443 memset(&conf, 0, sizeof(conf));
4444 conf = (typeof(conf)) {
4445 .psc_name = LUSTRE_MDT_NAME "_mdsc",
4446 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4448 .bc_nbufs = MDS_NBUFS,
4449 .bc_buf_size = MDS_BUFSIZE,
4450 .bc_req_max_size = SEQ_MAXREQSIZE,
4451 .bc_rep_max_size = SEQ_MAXREPSIZE,
4452 .bc_req_portal = SEQ_CONTROLLER_PORTAL,
4453 .bc_rep_portal = MDC_REPLY_PORTAL,
4456 .tc_thr_name = "mdt_mdsc",
4457 .tc_nthrs_init = MDT_OTHR_NTHRS_INIT,
4458 .tc_nthrs_max = MDT_OTHR_NTHRS_MAX,
4459 .tc_ctx_tags = LCT_MD_THREAD,
4462 .so_req_handler = mdt_mdsc_handle,
4463 .so_req_printer = target_print_req,
4464 .so_hpreq_handler = NULL,
4467 m->mdt_mdsc_service = ptlrpc_register_service(&conf, procfs_entry);
4468 if (IS_ERR(m->mdt_mdsc_service)) {
4469 rc = PTR_ERR(m->mdt_mdsc_service);
4470 CERROR("failed to start seq controller service: %d\n", rc);
4471 m->mdt_mdsc_service = NULL;
4473 GOTO(err_mdt_svc, rc);
4477 * metadata sequence server service configuration
4479 memset(&conf, 0, sizeof(conf));
4480 conf = (typeof(conf)) {
4481 .psc_name = LUSTRE_MDT_NAME "_mdss",
4482 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4484 .bc_nbufs = MDS_NBUFS,
4485 .bc_buf_size = MDS_BUFSIZE,
4486 .bc_req_max_size = SEQ_MAXREQSIZE,
4487 .bc_rep_max_size = SEQ_MAXREPSIZE,
4488 .bc_req_portal = SEQ_METADATA_PORTAL,
4489 .bc_rep_portal = MDC_REPLY_PORTAL,
4492 .tc_thr_name = "mdt_mdss",
4493 .tc_nthrs_init = MDT_OTHR_NTHRS_INIT,
4494 .tc_nthrs_max = MDT_OTHR_NTHRS_MAX,
4495 .tc_ctx_tags = LCT_MD_THREAD | LCT_DT_THREAD
4498 .so_req_handler = mdt_mdss_handle,
4499 .so_req_printer = target_print_req,
4500 .so_hpreq_handler = NULL,
4503 m->mdt_mdss_service = ptlrpc_register_service(&conf, procfs_entry);
4504 if (IS_ERR(m->mdt_mdss_service)) {
4505 rc = PTR_ERR(m->mdt_mdss_service);
4506 CERROR("failed to start metadata seq server service: %d\n", rc);
4507 m->mdt_mdss_service = NULL;
4509 GOTO(err_mdt_svc, rc);
4513 * Data sequence server service configuration. We want to have really
4514 * cluster-wide sequences space. This is why we start only one sequence
4515 * controller which manages space.
4517 memset(&conf, 0, sizeof(conf));
4518 conf = (typeof(conf)) {
4519 .psc_name = LUSTRE_MDT_NAME "_dtss",
4520 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4522 .bc_nbufs = MDS_NBUFS,
4523 .bc_buf_size = MDS_BUFSIZE,
4524 .bc_req_max_size = SEQ_MAXREQSIZE,
4525 .bc_rep_max_size = SEQ_MAXREPSIZE,
4526 .bc_req_portal = SEQ_DATA_PORTAL,
4527 .bc_rep_portal = OSC_REPLY_PORTAL,
4530 .tc_thr_name = "mdt_dtss",
4531 .tc_nthrs_init = MDT_OTHR_NTHRS_INIT,
4532 .tc_nthrs_max = MDT_OTHR_NTHRS_MAX,
4533 .tc_ctx_tags = LCT_MD_THREAD | LCT_DT_THREAD
4536 .so_req_handler = mdt_dtss_handle,
4537 .so_req_printer = target_print_req,
4538 .so_hpreq_handler = NULL,
4541 m->mdt_dtss_service = ptlrpc_register_service(&conf, procfs_entry);
4542 if (IS_ERR(m->mdt_dtss_service)) {
4543 rc = PTR_ERR(m->mdt_dtss_service);
4544 CERROR("failed to start data seq server service: %d\n", rc);
4545 m->mdt_dtss_service = NULL;
4547 GOTO(err_mdt_svc, rc);
4550 /* FLD service start */
4551 memset(&conf, 0, sizeof(conf));
4552 conf = (typeof(conf)) {
4553 .psc_name = LUSTRE_MDT_NAME "_fld",
4554 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4556 .bc_nbufs = MDS_NBUFS,
4557 .bc_buf_size = MDS_BUFSIZE,
4558 .bc_req_max_size = FLD_MAXREQSIZE,
4559 .bc_rep_max_size = FLD_MAXREPSIZE,
4560 .bc_req_portal = FLD_REQUEST_PORTAL,
4561 .bc_rep_portal = MDC_REPLY_PORTAL,
4564 .tc_thr_name = "mdt_fld",
4565 .tc_nthrs_init = MDT_OTHR_NTHRS_INIT,
4566 .tc_nthrs_max = MDT_OTHR_NTHRS_MAX,
4567 .tc_ctx_tags = LCT_DT_THREAD | LCT_MD_THREAD
4570 .so_req_handler = mdt_fld_handle,
4571 .so_req_printer = target_print_req,
4572 .so_hpreq_handler = NULL,
4575 m->mdt_fld_service = ptlrpc_register_service(&conf, procfs_entry);
4576 if (IS_ERR(m->mdt_fld_service)) {
4577 rc = PTR_ERR(m->mdt_fld_service);
4578 CERROR("failed to start fld service: %d\n", rc);
4579 m->mdt_fld_service = NULL;
4581 GOTO(err_mdt_svc, rc);
4585 * mds-mds service configuration. Separate portal is used to allow
4586 * mds-mds requests be not blocked during recovery.
4588 memset(&conf, 0, sizeof(conf));
4589 conf = (typeof(conf)) {
4590 .psc_name = LUSTRE_MDT_NAME "_mds",
4591 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4593 .bc_nbufs = MDS_NBUFS,
4594 .bc_buf_size = MDS_BUFSIZE,
4595 .bc_req_max_size = MDS_MAXREQSIZE,
4596 .bc_rep_max_size = MDS_MAXREPSIZE,
4597 .bc_req_portal = MDS_MDS_PORTAL,
4598 .bc_rep_portal = MDC_REPLY_PORTAL,
4601 .tc_thr_name = "mdt_mds",
4602 .tc_nthrs_init = MDT_OTHR_NTHRS_INIT,
4603 .tc_nthrs_max = MDT_OTHR_NTHRS_MAX,
4604 .tc_ctx_tags = LCT_MD_THREAD,
4607 .so_req_handler = mdt_xmds_handle,
4608 .so_req_printer = target_print_req,
4609 .so_hpreq_handler = ptlrpc_hpreq_handler,
4612 m->mdt_xmds_service = ptlrpc_register_service(&conf, procfs_entry);
4613 if (IS_ERR(m->mdt_xmds_service)) {
4614 rc = PTR_ERR(m->mdt_xmds_service);
4615 CERROR("failed to start xmds service: %d\n", rc);
4616 m->mdt_xmds_service = NULL;
4618 GOTO(err_mdt_svc, rc);
4624 mdt_stop_ptlrpc_service(m);
4629 static void mdt_stack_fini(const struct lu_env *env,
4630 struct mdt_device *m, struct lu_device *top)
4632 struct obd_device *obd = mdt2obd_dev(m);
4633 struct lustre_cfg_bufs *bufs;
4634 struct lustre_cfg *lcfg;
4635 struct mdt_thread_info *info;
4639 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4640 LASSERT(info != NULL);
4642 lu_dev_del_linkage(top->ld_site, top);
4644 lu_site_purge(env, top->ld_site, -1);
4646 bufs = &info->mti_u.bufs;
4647 /* process cleanup, pass mdt obd name to get obd umount flags */
4648 /* another purpose is to let all layers to release their objects */
4649 lustre_cfg_bufs_reset(bufs, obd->obd_name);
4654 lustre_cfg_bufs_set_string(bufs, 1, flags);
4655 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
4657 CERROR("Cannot alloc lcfg!\n");
4661 top->ld_ops->ldo_process_config(env, top, lcfg);
4662 lustre_cfg_free(lcfg);
4664 lu_site_purge(env, top->ld_site, -1);
4666 m->mdt_child = NULL;
4667 m->mdt_bottom = NULL;
4669 obd_disconnect(m->mdt_child_exp);
4670 m->mdt_child_exp = NULL;
4672 obd_disconnect(m->mdt_bottom_exp);
4673 m->mdt_child_exp = NULL;
4676 static int mdt_connect_to_next(const struct lu_env *env, struct mdt_device *m,
4677 const char *next, struct obd_export **exp)
4679 struct obd_connect_data *data = NULL;
4680 struct obd_device *obd;
4684 OBD_ALLOC_PTR(data);
4686 GOTO(out, rc = -ENOMEM);
4688 obd = class_name2obd(next);
4690 CERROR("%s: can't locate next device: %s\n",
4691 m->mdt_md_dev.md_lu_dev.ld_obd->obd_name, next);
4692 GOTO(out, rc = -ENOTCONN);
4695 data->ocd_connect_flags = OBD_CONNECT_VERSION;
4696 data->ocd_version = LUSTRE_VERSION_CODE;
4698 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
4700 CERROR("%s: cannot connect to next dev %s (%d)\n",
4701 m->mdt_md_dev.md_lu_dev.ld_obd->obd_name, next, rc);
4711 static int mdt_stack_init(const struct lu_env *env, struct mdt_device *mdt,
4712 struct lustre_cfg *cfg)
4714 char *dev = lustre_cfg_string(cfg, 0);
4715 int rc, name_size, uuid_size;
4716 char *name, *uuid, *p;
4717 struct lustre_cfg_bufs *bufs;
4718 struct lustre_cfg *lcfg;
4719 struct obd_device *obd;
4720 struct lustre_profile *lprof;
4721 struct lu_site *site;
4724 /* in 1.8 we had the only device in the stack - MDS.
4725 * 2.0 introduces MDT, MDD, OSD; MDT starts others internally.
4726 * in 2.3 OSD is instantiated by obd_mount.c, so we need
4727 * to generate names and setup MDT, MDD. MDT will be using
4728 * generated name to connect to MDD. for MDD the next device
4729 * will be LOD with name taken from so called "profile" which
4730 * is generated by mount_option line
4732 * 1.8 MGS generates config. commands like this:
4733 * #06 (104)mount_option 0: 1:lustre-MDT0000 2:lustre-mdtlov
4734 * #08 (120)setup 0:lustre-MDT0000 1:dev 2:type 3:lustre-MDT0000
4735 * 2.0 MGS generates config. commands like this:
4736 * #07 (112)mount_option 0: 1:lustre-MDT0000 2:lustre-MDT0000-mdtlov
4737 * #08 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4738 * 3:lustre-MDT0000-mdtlov 4:f
4740 * we generate MDD name from MDT one, just replacing T with D
4742 * after all the preparations, the logical equivalent will be
4743 * #01 (160)setup 0:lustre-MDD0000 1:lustre-MDD0000_UUID 2:0
4744 * 3:lustre-MDT0000-mdtlov 4:f
4745 * #02 (160)setup 0:lustre-MDT0000 1:lustre-MDT0000_UUID 2:0
4746 * 3:lustre-MDD0000 4:f
4748 * notice we build the stack from down to top: MDD first, then MDT */
4750 name_size = MAX_OBD_NAME;
4751 uuid_size = MAX_OBD_NAME;
4753 OBD_ALLOC(name, name_size);
4754 OBD_ALLOC(uuid, uuid_size);
4755 if (name == NULL || uuid == NULL)
4756 GOTO(cleanup_mem, rc = -ENOMEM);
4758 OBD_ALLOC_PTR(bufs);
4760 GOTO(cleanup_mem, rc = -ENOMEM);
4763 p = strstr(name, "-MDT");
4765 GOTO(cleanup_mem, rc = -ENOMEM);
4768 snprintf(uuid, MAX_OBD_NAME, "%s_UUID", name);
4770 lprof = class_get_profile(lustre_cfg_string(cfg, 0));
4771 if (lprof == NULL || lprof->lp_dt == NULL) {
4772 CERROR("can't find the profile: %s\n",
4773 lustre_cfg_string(cfg, 0));
4774 GOTO(cleanup_mem, rc = -EINVAL);
4777 lustre_cfg_bufs_reset(bufs, name);
4778 lustre_cfg_bufs_set_string(bufs, 1, LUSTRE_MDD_NAME);
4779 lustre_cfg_bufs_set_string(bufs, 2, uuid);
4780 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4782 lcfg = lustre_cfg_new(LCFG_ATTACH, bufs);
4784 GOTO(free_bufs, rc = -ENOMEM);
4786 rc = class_attach(lcfg);
4788 GOTO(lcfg_cleanup, rc);
4790 obd = class_name2obd(name);
4792 CERROR("Can not find obd %s (%s in config)\n",
4793 MDD_OBD_NAME, lustre_cfg_string(cfg, 0));
4794 GOTO(class_detach, rc = -EINVAL);
4797 lustre_cfg_free(lcfg);
4799 lustre_cfg_bufs_reset(bufs, name);
4800 lustre_cfg_bufs_set_string(bufs, 1, uuid);
4801 lustre_cfg_bufs_set_string(bufs, 2, dev);
4802 lustre_cfg_bufs_set_string(bufs, 3, lprof->lp_dt);
4804 lcfg = lustre_cfg_new(LCFG_SETUP, bufs);
4806 rc = class_setup(obd, lcfg);
4808 GOTO(class_detach, rc);
4810 /* connect to MDD we just setup */
4811 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_child_exp);
4815 site = mdt->mdt_child_exp->exp_obd->obd_lu_dev->ld_site;
4817 LASSERT(mdt->mdt_md_dev.md_lu_dev.ld_site == NULL);
4818 mdt->mdt_md_dev.md_lu_dev.ld_site = site;
4819 site->ls_top_dev = &mdt->mdt_md_dev.md_lu_dev;
4820 mdt->mdt_child = lu2md_dev(mdt->mdt_child_exp->exp_obd->obd_lu_dev);
4823 /* now connect to bottom OSD */
4824 snprintf(name, MAX_OBD_NAME, "%s-osd", dev);
4825 rc = mdt_connect_to_next(env, mdt, name, &mdt->mdt_bottom_exp);
4829 lu2dt_dev(mdt->mdt_bottom_exp->exp_obd->obd_lu_dev);
4832 rc = lu_env_refill((struct lu_env *)env);
4834 CERROR("Failure to refill session: '%d'\n", rc);
4836 lu_dev_add_linkage(site, &mdt->mdt_md_dev.md_lu_dev);
4841 class_detach(obd, lcfg);
4843 lustre_cfg_free(lcfg);
4848 OBD_FREE(name, name_size);
4850 OBD_FREE(uuid, uuid_size);
4855 * setup CONFIG_ORIG context, used to access local config log.
4856 * this may need to be rewrite as part of llog rewrite for lu-api.
4858 static int mdt_obd_llog_setup(struct obd_device *obd,
4859 struct lustre_sb_info *lsi)
4863 LASSERT(obd->obd_fsops == NULL);
4865 obd->obd_fsops = fsfilt_get_ops(lsi->lsi_fstype);
4866 if (IS_ERR(obd->obd_fsops))
4867 return PTR_ERR(obd->obd_fsops);
4869 rc = fsfilt_setup(obd, lsi->lsi_srv_mnt->mnt_sb);
4871 fsfilt_put_ops(obd->obd_fsops);
4875 OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
4876 obd->obd_lvfs_ctxt.pwdmnt = lsi->lsi_srv_mnt;
4877 obd->obd_lvfs_ctxt.pwd = lsi->lsi_srv_mnt->mnt_root;
4878 obd->obd_lvfs_ctxt.fs = get_ds();
4880 rc = llog_setup(NULL, obd, &obd->obd_olg, LLOG_CONFIG_ORIG_CTXT, obd,
4883 CERROR("llog_setup() failed: %d\n", rc);
4884 fsfilt_put_ops(obd->obd_fsops);
4890 static void mdt_obd_llog_cleanup(struct obd_device *obd)
4892 struct llog_ctxt *ctxt;
4894 ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
4896 llog_cleanup(NULL, ctxt);
4898 if (obd->obd_fsops) {
4899 fsfilt_put_ops(obd->obd_fsops);
4900 obd->obd_fsops = NULL;
4904 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4906 struct md_device *next = m->mdt_child;
4907 struct lu_device *d = &m->mdt_md_dev.md_lu_dev;
4908 struct obd_device *obd = mdt2obd_dev(m);
4911 target_recovery_fini(obd);
4913 ping_evictor_stop();
4915 mdt_stop_ptlrpc_service(m);
4916 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4917 mdt_obd_llog_cleanup(obd);
4918 obd_exports_barrier(obd);
4919 obd_zombie_barrier();
4923 lut_fini(env, &m->mdt_lut);
4924 mdt_fs_cleanup(env, m);
4925 upcall_cache_cleanup(m->mdt_identity_cache);
4926 m->mdt_identity_cache = NULL;
4928 if (m->mdt_namespace != NULL) {
4929 ldlm_namespace_free(m->mdt_namespace, NULL,
4930 d->ld_obd->obd_force);
4931 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
4934 cfs_free_nidlist(&m->mdt_nosquash_nids);
4935 if (m->mdt_nosquash_str) {
4936 OBD_FREE(m->mdt_nosquash_str, m->mdt_nosquash_strlen);
4937 m->mdt_nosquash_str = NULL;
4938 m->mdt_nosquash_strlen = 0;
4941 mdt_seq_fini(env, m);
4942 mdt_seq_fini_cli(m);
4943 mdt_fld_fini(env, m);
4944 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
4946 next->md_ops->mdo_init_capa_ctxt(env, next, 0, 0, 0, NULL);
4947 cfs_timer_disarm(&m->mdt_ck_timer);
4948 mdt_ck_thread_stop(m);
4953 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4955 LASSERT(cfs_atomic_read(&d->ld_ref) == 0);
4957 server_put_mount(mdt2obd_dev(m)->obd_name, NULL);
4962 static int mdt_adapt_sptlrpc_conf(struct obd_device *obd, int initial)
4964 struct mdt_device *m = mdt_dev(obd->obd_lu_dev);
4965 struct sptlrpc_rule_set tmp_rset;
4968 sptlrpc_rule_set_init(&tmp_rset);
4969 rc = sptlrpc_conf_target_get_rules(obd, &tmp_rset, initial);
4971 CERROR("mdt %s: failed get sptlrpc rules: %d\n",
4976 sptlrpc_target_update_exp_flavor(obd, &tmp_rset);
4978 cfs_write_lock(&m->mdt_sptlrpc_lock);
4979 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
4980 m->mdt_sptlrpc_rset = tmp_rset;
4981 cfs_write_unlock(&m->mdt_sptlrpc_lock);
4986 int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4988 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4989 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4991 struct mdt_thread_info *info;
4992 struct obd_device *obd;
4993 const char *dev = lustre_cfg_string(cfg, 0);
4994 const char *num = lustre_cfg_string(cfg, 2);
4995 struct lustre_mount_info *lmi = NULL;
4996 struct lustre_sb_info *lsi;
4998 struct md_site *mite;
4999 const char *identity_upcall = "NONE";
5000 struct md_device *next;
5006 md_device_init(&m->mdt_md_dev, ldt);
5008 * Environment (env) might be missing mdt_thread_key values at that
5009 * point, if device is allocated when mdt_thread_key is in QUIESCENT
5012 * Usually device allocation path doesn't use module key values, but
5013 * mdt has to do a lot of work here, so allocate key value.
5015 rc = lu_env_refill((struct lu_env *)env);
5019 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5020 LASSERT(info != NULL);
5022 obd = class_name2obd(dev);
5023 LASSERT(obd != NULL);
5025 m->mdt_max_mdsize = MAX_MD_SIZE; /* 4 stripes */
5027 m->mdt_som_conf = 0;
5029 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
5030 lmi = server_get_mount(dev);
5032 CERROR("Cannot get mount info for %s!\n", dev);
5035 lsi = s2lsi(lmi->lmi_sb);
5036 /* CMD is supported only in IAM mode */
5038 node_id = simple_strtol(num, NULL, 10);
5039 if (!(lsi->lsi_flags & LDD_F_IAM_DIR) && node_id) {
5040 CERROR("CMD Operation not allowed in IOP mode\n");
5041 GOTO(err_lmi, rc = -EINVAL);
5044 obd->u.obt.obt_magic = OBT_MAGIC;
5047 cfs_rwlock_init(&m->mdt_sptlrpc_lock);
5048 sptlrpc_rule_set_init(&m->mdt_sptlrpc_rset);
5050 cfs_spin_lock_init(&m->mdt_ioepoch_lock);
5051 m->mdt_opts.mo_compat_resname = 0;
5052 m->mdt_opts.mo_mds_capa = 1;
5053 m->mdt_opts.mo_oss_capa = 1;
5054 m->mdt_capa_timeout = CAPA_TIMEOUT;
5055 m->mdt_capa_alg = CAPA_HMAC_ALG_SHA1;
5056 m->mdt_ck_timeout = CAPA_KEY_TIMEOUT;
5057 m->mdt_squash_uid = 0;
5058 m->mdt_squash_gid = 0;
5059 CFS_INIT_LIST_HEAD(&m->mdt_nosquash_nids);
5060 m->mdt_nosquash_str = NULL;
5061 m->mdt_nosquash_strlen = 0;
5062 cfs_init_rwsem(&m->mdt_squash_sem);
5063 cfs_spin_lock_init(&m->mdt_osfs_lock);
5064 m->mdt_osfs_age = cfs_time_shift_64(-1000);
5066 m->mdt_md_dev.md_lu_dev.ld_ops = &mdt_lu_ops;
5067 m->mdt_md_dev.md_lu_dev.ld_obd = obd;
5068 /* set this lu_device to obd, because error handling need it */
5069 obd->obd_lu_dev = &m->mdt_md_dev.md_lu_dev;
5071 /* init the stack */
5072 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
5074 CERROR("Can't init device stack, rc %d\n", rc);
5078 s = m->mdt_md_dev.md_lu_dev.ld_site;
5079 mite = &m->mdt_mite;
5080 s->ld_md_site = mite;
5082 /* set server index */
5083 mite->ms_node_id = node_id;
5085 /* failover is the default
5086 * FIXME: we do not failout mds0/mgs, which may cause some problems.
5087 * assumed whose ms_node_id == 0 XXX
5089 obd->obd_replayable = 1;
5090 /* No connection accepted until configurations will finish */
5091 obd->obd_no_conn = 1;
5093 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
5094 char *str = lustre_cfg_string(cfg, 4);
5095 if (strchr(str, 'n')) {
5096 CWARN("%s: recovery disabled\n", obd->obd_name);
5097 obd->obd_replayable = 0;
5101 rc = lut_init(env, &m->mdt_lut, obd, m->mdt_bottom);
5103 GOTO(err_fini_stack, rc);
5105 snprintf(info->mti_u.ns_name, sizeof info->mti_u.ns_name,
5106 LUSTRE_MDT_NAME"-%p", m);
5107 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
5108 LDLM_NAMESPACE_SERVER,
5109 LDLM_NAMESPACE_GREEDY,
5111 if (m->mdt_namespace == NULL)
5112 GOTO(err_fini_seq, rc = -ENOMEM);
5114 m->mdt_namespace->ns_lvbp = m;
5115 m->mdt_namespace->ns_lvbo = &mdt_lvbo;
5117 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
5118 /* set obd_namespace for compatibility with old code */
5119 obd->obd_namespace = m->mdt_namespace;
5121 cfs_timer_init(&m->mdt_ck_timer, mdt_ck_timer_callback, m);
5123 rc = mdt_ck_thread_start(m);
5125 GOTO(err_free_ns, rc);
5127 rc = mdt_fs_setup(env, m, obd, lsi);
5131 rc = mdt_obd_llog_setup(obd, lsi);
5133 GOTO(err_fs_cleanup, rc);
5135 rc = mdt_llog_ctxt_clone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
5137 GOTO(err_llog_cleanup, rc);
5139 mdt_adapt_sptlrpc_conf(obd, 1);
5141 next = m->mdt_child;
5143 rc = next->md_ops->mdo_iocontrol(env, next, OBD_IOC_GET_MNTOPT, 0,
5146 GOTO(err_llog_cleanup, rc);
5148 if (mntopts & MNTOPT_USERXATTR)
5149 m->mdt_opts.mo_user_xattr = 1;
5151 m->mdt_opts.mo_user_xattr = 0;
5153 if (mntopts & MNTOPT_ACL)
5154 m->mdt_opts.mo_acl = 1;
5156 m->mdt_opts.mo_acl = 0;
5158 /* XXX: to support suppgid for ACL, we enable identity_upcall
5159 * by default, otherwise, maybe got unexpected -EACCESS. */
5160 if (m->mdt_opts.mo_acl)
5161 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
5163 m->mdt_identity_cache = upcall_cache_init(obd->obd_name,identity_upcall,
5164 &mdt_identity_upcall_cache_ops);
5165 if (IS_ERR(m->mdt_identity_cache)) {
5166 rc = PTR_ERR(m->mdt_identity_cache);
5167 m->mdt_identity_cache = NULL;
5168 GOTO(err_llog_cleanup, rc);
5171 rc = mdt_procfs_init(m, dev);
5173 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
5174 GOTO(err_recovery, rc);
5177 rc = mdt_start_ptlrpc_service(m);
5179 GOTO(err_procfs, rc);
5181 ping_evictor_start();
5183 /* recovery will be started upon mdt_prepare()
5184 * when the whole stack is complete and ready
5185 * to serve the requests */
5187 mdt_init_capa_ctxt(env, m);
5189 /* Reduce the initial timeout on an MDS because it doesn't need such
5190 * a long timeout as an OST does. Adaptive timeouts will adjust this
5191 * value appropriately. */
5192 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
5193 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
5197 ping_evictor_stop();
5198 mdt_stop_ptlrpc_service(m);
5202 target_recovery_fini(obd);
5203 upcall_cache_cleanup(m->mdt_identity_cache);
5204 m->mdt_identity_cache = NULL;
5206 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
5207 mdt_obd_llog_cleanup(obd);
5209 mdt_fs_cleanup(env, m);
5211 cfs_timer_disarm(&m->mdt_ck_timer);
5212 mdt_ck_thread_stop(m);
5214 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
5215 obd->obd_namespace = m->mdt_namespace = NULL;
5217 mdt_seq_fini(env, m);
5218 mdt_fld_fini(env, m);
5219 lut_fini(env, &m->mdt_lut);
5221 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
5224 server_put_mount(dev, lmi->lmi_mnt);
5228 /* For interoperability between 1.8 and 2.0. */
5229 static struct cfg_interop_param mdt_interop_param[] = {
5230 { "mdt.group_upcall", NULL },
5231 { "mdt.quota_type", "mdd.quota_type" },
5232 { "mdt.rootsquash", "mdt.root_squash" },
5233 { "mdt.nosquash_nid", "mdt.nosquash_nids" },
5237 /* used by MGS to process specific configurations */
5238 static int mdt_process_config(const struct lu_env *env,
5239 struct lu_device *d, struct lustre_cfg *cfg)
5241 struct mdt_device *m = mdt_dev(d);
5242 struct md_device *md_next = m->mdt_child;
5243 struct lu_device *next = md2lu_dev(md_next);
5247 switch (cfg->lcfg_command) {
5249 struct lprocfs_static_vars lvars;
5250 struct obd_device *obd = d->ld_obd;
5252 /* For interoperability between 1.8 and 2.0. */
5253 struct cfg_interop_param *ptr = NULL;
5254 struct lustre_cfg *old_cfg = NULL;
5257 param = lustre_cfg_string(cfg, 1);
5258 if (param == NULL) {
5259 CERROR("param is empty\n");
5264 ptr = class_find_old_param(param, mdt_interop_param);
5266 if (ptr->new_param == NULL) {
5267 CWARN("For 1.8 interoperability, skip this %s."
5268 " It is obsolete.\n", ptr->old_param);
5272 CWARN("Found old param %s, changed it to %s.\n",
5273 ptr->old_param, ptr->new_param);
5276 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
5283 lprocfs_mdt_init_vars(&lvars);
5284 rc = class_process_proc_param(PARAM_MDT, lvars.obd_vars,
5286 if (rc > 0 || rc == -ENOSYS)
5287 /* we don't understand; pass it on */
5288 rc = next->ld_ops->ldo_process_config(env, next, cfg);
5290 if (old_cfg != NULL)
5291 lustre_cfg_free(cfg);
5297 * Add mdc hook to get first MDT uuid and connect it to
5298 * ls->controller to use for seq manager.
5300 rc = next->ld_ops->ldo_process_config(env, next, cfg);
5302 CERROR("Can't add mdc, rc %d\n", rc);
5304 rc = mdt_seq_init_cli(env, mdt_dev(d), cfg);
5307 /* others are passed further */
5308 rc = next->ld_ops->ldo_process_config(env, next, cfg);
5314 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
5315 const struct lu_object_header *hdr,
5316 struct lu_device *d)
5318 struct mdt_object *mo;
5322 OBD_SLAB_ALLOC_PTR_GFP(mo, mdt_object_kmem, CFS_ALLOC_IO);
5324 struct lu_object *o;
5325 struct lu_object_header *h;
5327 o = &mo->mot_obj.mo_lu;
5328 h = &mo->mot_header;
5329 lu_object_header_init(h);
5330 lu_object_init(o, h, d);
5331 lu_object_add_top(h, o);
5332 o->lo_ops = &mdt_obj_ops;
5333 cfs_mutex_init(&mo->mot_ioepoch_mutex);
5334 cfs_mutex_init(&mo->mot_lov_mutex);
5340 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
5341 const struct lu_object_conf *unused)
5343 struct mdt_device *d = mdt_dev(o->lo_dev);
5344 struct lu_device *under;
5345 struct lu_object *below;
5349 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
5350 PFID(lu_object_fid(o)));
5352 under = &d->mdt_child->md_lu_dev;
5353 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
5354 if (below != NULL) {
5355 lu_object_add(o, below);
5362 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
5364 struct mdt_object *mo = mdt_obj(o);
5365 struct lu_object_header *h;
5369 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
5370 PFID(lu_object_fid(o)));
5373 lu_object_header_fini(h);
5374 OBD_SLAB_FREE_PTR(mo, mdt_object_kmem);
5379 static int mdt_object_print(const struct lu_env *env, void *cookie,
5380 lu_printer_t p, const struct lu_object *o)
5382 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
5383 return (*p)(env, cookie, LUSTRE_MDT_NAME"-object@%p(ioepoch="LPU64" "
5384 "flags="LPX64", epochcount=%d, writecount=%d)",
5385 mdto, mdto->mot_ioepoch, mdto->mot_flags,
5386 mdto->mot_ioepoch_count, mdto->mot_writecount);
5389 static int mdt_prepare(const struct lu_env *env,
5390 struct lu_device *pdev,
5391 struct lu_device *cdev)
5393 struct mdt_device *mdt = mdt_dev(cdev);
5394 struct lu_device *next = &mdt->mdt_child->md_lu_dev;
5395 struct obd_device *obd = cdev->ld_obd;
5402 rc = next->ld_ops->ldo_prepare(env, cdev, next);
5406 rc = mdt_fld_init(env, obd->obd_name, mdt);
5410 rc = mdt_seq_init(env, obd->obd_name, mdt);
5414 rc = mdt->mdt_child->md_ops->mdo_root_get(env, mdt->mdt_child,
5415 &mdt->mdt_md_root_fid);
5419 LASSERT(!cfs_test_bit(MDT_FL_CFGLOG, &mdt->mdt_state));
5420 target_recovery_init(&mdt->mdt_lut, mdt_recovery_handle);
5421 cfs_set_bit(MDT_FL_CFGLOG, &mdt->mdt_state);
5422 LASSERT(obd->obd_no_conn);
5423 cfs_spin_lock(&obd->obd_dev_lock);
5424 obd->obd_no_conn = 0;
5425 cfs_spin_unlock(&obd->obd_dev_lock);
5427 if (obd->obd_recovering == 0)
5428 mdt_postrecov(env, mdt);
5433 static const struct lu_device_operations mdt_lu_ops = {
5434 .ldo_object_alloc = mdt_object_alloc,
5435 .ldo_process_config = mdt_process_config,
5436 .ldo_prepare = mdt_prepare,
5439 static const struct lu_object_operations mdt_obj_ops = {
5440 .loo_object_init = mdt_object_init,
5441 .loo_object_free = mdt_object_free,
5442 .loo_object_print = mdt_object_print
5445 static int mdt_obd_set_info_async(const struct lu_env *env,
5446 struct obd_export *exp,
5447 __u32 keylen, void *key,
5448 __u32 vallen, void *val,
5449 struct ptlrpc_request_set *set)
5451 struct obd_device *obd = exp->exp_obd;
5457 if (KEY_IS(KEY_SPTLRPC_CONF)) {
5458 rc = mdt_adapt_sptlrpc_conf(obd, 0);
5465 /* mds_connect_internal */
5466 static int mdt_connect_internal(struct obd_export *exp,
5467 struct mdt_device *mdt,
5468 struct obd_connect_data *data)
5471 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
5472 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
5474 /* If no known bits (which should not happen, probably,
5475 as everybody should support LOOKUP and UPDATE bits at least)
5476 revert to compat mode with plain locks. */
5477 if (!data->ocd_ibits_known &&
5478 data->ocd_connect_flags & OBD_CONNECT_IBITS)
5479 data->ocd_connect_flags &= ~OBD_CONNECT_IBITS;
5481 if (!mdt->mdt_opts.mo_acl)
5482 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
5484 if (!mdt->mdt_opts.mo_user_xattr)
5485 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
5487 if (!mdt->mdt_som_conf)
5488 data->ocd_connect_flags &= ~OBD_CONNECT_SOM;
5490 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
5491 data->ocd_brw_size = min(data->ocd_brw_size,
5492 (__u32)(PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT));
5493 if (data->ocd_brw_size == 0) {
5494 CERROR("%s: cli %s/%p ocd_connect_flags: "LPX64
5495 " ocd_version: %x ocd_grant: %d "
5496 "ocd_index: %u ocd_brw_size is "
5497 "unexpectedly zero, network data "
5498 "corruption? Refusing connection of this"
5500 exp->exp_obd->obd_name,
5501 exp->exp_client_uuid.uuid,
5502 exp, data->ocd_connect_flags, data->ocd_version,
5503 data->ocd_grant, data->ocd_index);
5508 cfs_spin_lock(&exp->exp_lock);
5509 exp->exp_connect_flags = data->ocd_connect_flags;
5510 cfs_spin_unlock(&exp->exp_lock);
5511 data->ocd_version = LUSTRE_VERSION_CODE;
5512 exp->exp_mdt_data.med_ibits_known = data->ocd_ibits_known;
5516 if (mdt->mdt_opts.mo_acl &&
5517 ((exp->exp_connect_flags & OBD_CONNECT_ACL) == 0)) {
5518 CWARN("%s: MDS requires ACL support but client does not\n",
5519 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
5524 if ((exp->exp_connect_flags & OBD_CONNECT_FID) == 0) {
5525 CWARN("%s: MDS requires FID support, but client not\n",
5526 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
5530 if (mdt->mdt_som_conf && !exp_connect_som(exp) &&
5531 !(exp->exp_connect_flags & OBD_CONNECT_MDS_MDS)) {
5532 CWARN("%s: MDS has SOM enabled, but client does not support "
5533 "it\n", mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
5540 static int mdt_connect_check_sptlrpc(struct mdt_device *mdt,
5541 struct obd_export *exp,
5542 struct ptlrpc_request *req)
5544 struct sptlrpc_flavor flvr;
5547 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
5548 cfs_read_lock(&mdt->mdt_sptlrpc_lock);
5549 sptlrpc_target_choose_flavor(&mdt->mdt_sptlrpc_rset,
5553 cfs_read_unlock(&mdt->mdt_sptlrpc_lock);
5555 cfs_spin_lock(&exp->exp_lock);
5557 exp->exp_sp_peer = req->rq_sp_from;
5558 exp->exp_flvr = flvr;
5560 if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
5561 exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
5562 CERROR("unauthorized rpc flavor %x from %s, "
5563 "expect %x\n", req->rq_flvr.sf_rpc,
5564 libcfs_nid2str(req->rq_peer.nid),
5565 exp->exp_flvr.sf_rpc);
5569 cfs_spin_unlock(&exp->exp_lock);
5571 if (exp->exp_sp_peer != req->rq_sp_from) {
5572 CERROR("RPC source %s doesn't match %s\n",
5573 sptlrpc_part2name(req->rq_sp_from),
5574 sptlrpc_part2name(exp->exp_sp_peer));
5577 rc = sptlrpc_target_export_check(exp, req);
5584 /* mds_connect copy */
5585 static int mdt_obd_connect(const struct lu_env *env,
5586 struct obd_export **exp, struct obd_device *obd,
5587 struct obd_uuid *cluuid,
5588 struct obd_connect_data *data,
5591 struct mdt_thread_info *info;
5592 struct obd_export *lexp;
5593 struct lustre_handle conn = { 0 };
5594 struct mdt_device *mdt;
5595 struct ptlrpc_request *req;
5599 LASSERT(env != NULL);
5600 if (!exp || !obd || !cluuid)
5603 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5604 req = info->mti_pill->rc_req;
5605 mdt = mdt_dev(obd->obd_lu_dev);
5608 * first, check whether the stack is ready to handle requests
5609 * XXX: probably not very appropriate method is used now
5610 * at some point we should find a better one
5612 if (!cfs_test_bit(MDT_FL_SYNCED, &mdt->mdt_state)) {
5613 rc = obd_health_check(env, mdt->mdt_child_exp->exp_obd);
5616 cfs_set_bit(MDT_FL_SYNCED, &mdt->mdt_state);
5619 rc = class_connect(&conn, obd, cluuid);
5623 lexp = class_conn2export(&conn);
5624 LASSERT(lexp != NULL);
5626 rc = mdt_connect_check_sptlrpc(mdt, lexp, req);
5630 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_RCVG_FLAG))
5631 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECOVERING);
5633 rc = mdt_connect_internal(lexp, mdt, data);
5635 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
5638 info->mti_exp = lexp;
5639 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5640 rc = lut_client_new(env, lexp);
5642 mdt_export_stats_init(obd, lexp, localdata);
5647 class_disconnect(lexp);
5656 static int mdt_obd_reconnect(const struct lu_env *env,
5657 struct obd_export *exp, struct obd_device *obd,
5658 struct obd_uuid *cluuid,
5659 struct obd_connect_data *data,
5662 struct mdt_thread_info *info;
5663 struct mdt_device *mdt;
5664 struct ptlrpc_request *req;
5668 if (exp == NULL || obd == NULL || cluuid == NULL)
5671 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5672 req = info->mti_pill->rc_req;
5673 mdt = mdt_dev(obd->obd_lu_dev);
5675 rc = mdt_connect_check_sptlrpc(mdt, exp, req);
5679 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
5681 mdt_export_stats_init(obd, exp, localdata);
5686 static int mdt_export_cleanup(struct obd_export *exp)
5688 struct mdt_export_data *med = &exp->exp_mdt_data;
5689 struct obd_device *obd = exp->exp_obd;
5690 struct mdt_device *mdt;
5691 struct mdt_thread_info *info;
5693 CFS_LIST_HEAD(closing_list);
5694 struct mdt_file_data *mfd, *n;
5698 cfs_spin_lock(&med->med_open_lock);
5699 while (!cfs_list_empty(&med->med_open_head)) {
5700 cfs_list_t *tmp = med->med_open_head.next;
5701 mfd = cfs_list_entry(tmp, struct mdt_file_data, mfd_list);
5703 /* Remove mfd handle so it can't be found again.
5704 * We are consuming the mfd_list reference here. */
5705 class_handle_unhash(&mfd->mfd_handle);
5706 cfs_list_move_tail(&mfd->mfd_list, &closing_list);
5708 cfs_spin_unlock(&med->med_open_lock);
5709 mdt = mdt_dev(obd->obd_lu_dev);
5710 LASSERT(mdt != NULL);
5712 rc = lu_env_init(&env, LCT_MD_THREAD);
5716 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5717 LASSERT(info != NULL);
5718 memset(info, 0, sizeof *info);
5719 info->mti_env = &env;
5720 info->mti_mdt = mdt;
5721 info->mti_exp = exp;
5723 if (!cfs_list_empty(&closing_list)) {
5724 struct md_attr *ma = &info->mti_attr;
5726 /* Close any open files (which may also cause orphan unlinking). */
5727 cfs_list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
5728 cfs_list_del_init(&mfd->mfd_list);
5729 ma->ma_need = ma->ma_valid = 0;
5730 /* Don't unlink orphan on failover umount, LU-184 */
5731 if (exp->exp_flags & OBD_OPT_FAILOVER) {
5732 ma->ma_valid = MA_FLAGS;
5733 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
5735 mdt_mfd_close(info, mfd);
5738 info->mti_mdt = NULL;
5739 /* cleanup client slot early */
5740 /* Do not erase record for recoverable client. */
5741 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
5742 lut_client_del(&env, exp);
5748 static int mdt_obd_disconnect(struct obd_export *exp)
5754 class_export_get(exp);
5756 rc = server_disconnect_export(exp);
5758 CDEBUG(D_IOCTL, "server disconnect error: %d\n", rc);
5760 rc = mdt_export_cleanup(exp);
5761 class_export_put(exp);
5765 /* FIXME: Can we avoid using these two interfaces? */
5766 static int mdt_init_export(struct obd_export *exp)
5768 struct mdt_export_data *med = &exp->exp_mdt_data;
5772 CFS_INIT_LIST_HEAD(&med->med_open_head);
5773 cfs_spin_lock_init(&med->med_open_lock);
5774 cfs_mutex_init(&med->med_idmap_mutex);
5775 med->med_idmap = NULL;
5776 cfs_spin_lock(&exp->exp_lock);
5777 exp->exp_connecting = 1;
5778 cfs_spin_unlock(&exp->exp_lock);
5780 /* self-export doesn't need client data and ldlm initialization */
5781 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5782 &exp->exp_client_uuid)))
5785 rc = lut_client_alloc(exp);
5789 rc = ldlm_init_export(exp);
5796 lut_client_free(exp);
5798 CERROR("%s: Failed to initialize export: rc = %d\n",
5799 exp->exp_obd->obd_name, rc);
5803 static int mdt_destroy_export(struct obd_export *exp)
5807 if (exp_connect_rmtclient(exp))
5808 mdt_cleanup_idmap(&exp->exp_mdt_data);
5810 target_destroy_export(exp);
5811 /* destroy can be called from failed obd_setup, so
5812 * checking uuid is safer than obd_self_export */
5813 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
5814 &exp->exp_client_uuid)))
5817 ldlm_destroy_export(exp);
5818 lut_client_free(exp);
5820 LASSERT(cfs_list_empty(&exp->exp_outstanding_replies));
5821 LASSERT(cfs_list_empty(&exp->exp_mdt_data.med_open_head));
5826 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key,
5827 void *val, int vallen)
5829 struct mdt_device *mdt = mdt_dev(info->mti_exp->exp_obd->obd_lu_dev);
5830 struct getinfo_fid2path *fpout, *fpin;
5833 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
5836 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
5837 lustre_swab_fid2path(fpin);
5839 memcpy(fpout, fpin, sizeof(*fpin));
5840 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
5843 rc = mdt_fid2path(info->mti_env, mdt, fpout);
5847 static int mdt_fid2path(const struct lu_env *env, struct mdt_device *mdt,
5848 struct getinfo_fid2path *fp)
5850 struct mdt_object *obj;
5854 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
5855 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
5857 if (!fid_is_sane(&fp->gf_fid))
5860 obj = mdt_object_find(env, mdt, &fp->gf_fid);
5861 if (obj == NULL || IS_ERR(obj)) {
5862 CDEBUG(D_IOCTL, "no object "DFID": %ld\n", PFID(&fp->gf_fid),
5867 rc = lu_object_exists(&obj->mot_obj.mo_lu);
5873 mdt_object_put(env, obj);
5874 CDEBUG(D_IOCTL, "nonlocal object "DFID": %d\n",
5875 PFID(&fp->gf_fid), rc);
5879 rc = mo_path(env, md_object_next(&obj->mot_obj), fp->gf_path,
5880 fp->gf_pathlen, &fp->gf_recno, &fp->gf_linkno);
5881 mdt_object_put(env, obj);
5886 static int mdt_get_info(struct mdt_thread_info *info)
5888 struct ptlrpc_request *req = mdt_info_req(info);
5896 key = req_capsule_client_get(info->mti_pill, &RMF_GETINFO_KEY);
5898 CDEBUG(D_IOCTL, "No GETINFO key");
5901 keylen = req_capsule_get_size(info->mti_pill, &RMF_GETINFO_KEY,
5904 vallen = req_capsule_client_get(info->mti_pill, &RMF_GETINFO_VALLEN);
5905 if (vallen == NULL) {
5906 CDEBUG(D_IOCTL, "Unable to get RMF_GETINFO_VALLEN buffer");
5910 req_capsule_set_size(info->mti_pill, &RMF_GETINFO_VAL, RCL_SERVER,
5912 rc = req_capsule_server_pack(info->mti_pill);
5913 valout = req_capsule_server_get(info->mti_pill, &RMF_GETINFO_VAL);
5914 if (valout == NULL) {
5915 CDEBUG(D_IOCTL, "Unable to get get-info RPC out buffer");
5919 if (KEY_IS(KEY_FID2PATH))
5920 rc = mdt_rpc_fid2path(info, key, valout, *vallen);
5924 lustre_msg_set_status(req->rq_repmsg, rc);
5929 /* Pass the ioc down */
5930 static int mdt_ioc_child(struct lu_env *env, struct mdt_device *mdt,
5931 unsigned int cmd, int len, void *data)
5933 struct lu_context ioctl_session;
5934 struct md_device *next = mdt->mdt_child;
5938 rc = lu_context_init(&ioctl_session, LCT_SESSION);
5941 ioctl_session.lc_thread = (struct ptlrpc_thread *)cfs_current();
5942 lu_context_enter(&ioctl_session);
5943 env->le_ses = &ioctl_session;
5945 LASSERT(next->md_ops->mdo_iocontrol);
5946 rc = next->md_ops->mdo_iocontrol(env, next, cmd, len, data);
5948 lu_context_exit(&ioctl_session);
5949 lu_context_fini(&ioctl_session);
5953 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
5955 struct obd_ioctl_data *data = karg;
5956 struct lu_fid *fid = (struct lu_fid *)data->ioc_inlbuf1;
5958 struct mdt_object *obj;
5959 struct mdt_lock_handle *lh;
5963 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
5964 if (!fid_is_sane(fid))
5967 lh = &mti->mti_lh[MDT_LH_PARENT];
5968 mdt_lock_reg_init(lh, LCK_CR);
5970 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
5972 RETURN(PTR_ERR(obj));
5974 rc = mdt_object_exists(obj);
5978 * before calling version get the correct MDS should be
5979 * fid, this is error to find remote object here
5981 CERROR("nonlocal object "DFID"\n", PFID(fid));
5982 } else if (rc == 0) {
5983 *(__u64 *)data->ioc_inlbuf2 = ENOENT_VERSION;
5986 version = dt_version_get(mti->mti_env, mdt_obj2dt(obj));
5987 *(__u64 *)data->ioc_inlbuf2 = version;
5990 mdt_object_unlock_put(mti, obj, lh, 1);
5994 /* ioctls on obd dev */
5995 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
5996 void *karg, void *uarg)
5999 struct obd_device *obd = exp->exp_obd;
6000 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
6001 struct dt_device *dt = mdt->mdt_bottom;
6005 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
6006 rc = lu_env_init(&env, LCT_MD_THREAD);
6012 rc = mdt_device_sync(&env, mdt);
6014 case OBD_IOC_SET_READONLY:
6015 rc = dt->dd_ops->dt_ro(&env, dt);
6017 case OBD_IOC_ABORT_RECOVERY:
6018 CERROR("Aborting recovery for device %s\n", obd->obd_name);
6019 target_stop_recovery_thread(obd);
6022 case OBD_IOC_CHANGELOG_REG:
6023 case OBD_IOC_CHANGELOG_DEREG:
6024 case OBD_IOC_CHANGELOG_CLEAR:
6025 rc = mdt_ioc_child(&env, mdt, cmd, len, karg);
6027 case OBD_IOC_START_LFSCK:
6028 case OBD_IOC_STOP_LFSCK: {
6029 struct md_device *next = mdt->mdt_child;
6030 struct obd_ioctl_data *data = karg;
6032 if (unlikely(data == NULL)) {
6037 rc = next->md_ops->mdo_iocontrol(&env, next, cmd,
6042 case OBD_IOC_GET_OBJ_VERSION: {
6043 struct mdt_thread_info *mti;
6044 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
6045 memset(mti, 0, sizeof *mti);
6046 mti->mti_env = &env;
6050 rc = mdt_ioc_version_get(mti, karg);
6054 CERROR("Not supported cmd = %d for device %s\n",
6055 cmd, obd->obd_name);
6063 int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
6065 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
6069 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
6073 int mdt_obd_postrecov(struct obd_device *obd)
6078 rc = lu_env_init(&env, LCT_MD_THREAD);
6081 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
6087 * Send a copytool req to a client
6088 * Note this sends a request RPC from a server (MDT) to a client (MDC),
6089 * backwards of normal comms.
6091 int mdt_hsm_copytool_send(struct obd_export *exp)
6094 struct hsm_action_list *hal;
6095 struct hsm_action_item *hai;
6099 CWARN("%s: writing to mdc at %s\n", exp->exp_obd->obd_name,
6100 libcfs_nid2str(exp->exp_connection->c_peer.nid));
6102 len = sizeof(*lh) + sizeof(*hal) + MTI_NAME_MAXLEN +
6103 /* for mockup below */ 2 * cfs_size_round(sizeof(*hai));
6108 lh->kuc_magic = KUC_MAGIC;
6109 lh->kuc_transport = KUC_TRANSPORT_HSM;
6110 lh->kuc_msgtype = HMT_ACTION_LIST;
6111 lh->kuc_msglen = len;
6113 hal = (struct hsm_action_list *)(lh + 1);
6114 hal->hal_version = HAL_VERSION;
6115 hal->hal_archive_num = 1;
6116 obd_uuid2fsname(hal->hal_fsname, exp->exp_obd->obd_name,
6119 /* mock up an action list */
6121 hai = hai_zero(hal);
6122 hai->hai_action = HSMA_ARCHIVE;
6123 hai->hai_fid.f_oid = 0xA00A;
6124 hai->hai_len = sizeof(*hai);
6125 hai = hai_next(hai);
6126 hai->hai_action = HSMA_RESTORE;
6127 hai->hai_fid.f_oid = 0xB00B;
6128 hai->hai_len = sizeof(*hai);
6130 /* Uses the ldlm reverse import; this rpc will be seen by
6131 the ldlm_callback_handler */
6132 rc = do_set_info_async(exp->exp_imp_reverse,
6133 LDLM_SET_INFO, LUSTRE_OBD_VERSION,
6134 sizeof(KEY_HSM_COPYTOOL_SEND),
6135 KEY_HSM_COPYTOOL_SEND,
6143 static struct obd_ops mdt_obd_device_ops = {
6144 .o_owner = THIS_MODULE,
6145 .o_set_info_async = mdt_obd_set_info_async,
6146 .o_connect = mdt_obd_connect,
6147 .o_reconnect = mdt_obd_reconnect,
6148 .o_disconnect = mdt_obd_disconnect,
6149 .o_init_export = mdt_init_export,
6150 .o_destroy_export = mdt_destroy_export,
6151 .o_iocontrol = mdt_iocontrol,
6152 .o_postrecov = mdt_obd_postrecov,
6155 static struct lu_device* mdt_device_fini(const struct lu_env *env,
6156 struct lu_device *d)
6158 struct mdt_device *m = mdt_dev(d);
6165 static struct lu_device *mdt_device_free(const struct lu_env *env,
6166 struct lu_device *d)
6168 struct mdt_device *m = mdt_dev(d);
6171 md_device_fini(&m->mdt_md_dev);
6176 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
6177 struct lu_device_type *t,
6178 struct lustre_cfg *cfg)
6180 struct lu_device *l;
6181 struct mdt_device *m;
6187 l = &m->mdt_md_dev.md_lu_dev;
6188 rc = mdt_init0(env, m, t, cfg);
6190 mdt_device_free(env, l);
6195 l = ERR_PTR(-ENOMEM);
6199 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
6200 LU_KEY_INIT(mdt, struct mdt_thread_info);
6202 static void mdt_key_fini(const struct lu_context *ctx,
6203 struct lu_context_key *key, void* data)
6205 struct mdt_thread_info *info = data;
6207 if (info->mti_big_lmm) {
6208 OBD_FREE_LARGE(info->mti_big_lmm, info->mti_big_lmmsize);
6209 info->mti_big_lmm = NULL;
6210 info->mti_big_lmmsize = 0;
6215 /* context key: mdt_thread_key */
6216 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
6218 struct md_ucred *mdt_ucred(const struct mdt_thread_info *info)
6220 return md_ucred(info->mti_env);
6224 * Enable/disable COS (Commit On Sharing).
6226 * Set/Clear the COS flag in mdt options.
6228 * \param mdt mdt device
6229 * \param val 0 disables COS, other values enable COS
6231 void mdt_enable_cos(struct mdt_device *mdt, int val)
6236 mdt->mdt_opts.mo_cos = !!val;
6237 rc = lu_env_init(&env, LCT_LOCAL);
6238 if (unlikely(rc != 0)) {
6239 CWARN("lu_env initialization failed with rc = %d,"
6240 "cannot sync\n", rc);
6243 mdt_device_sync(&env, mdt);
6248 * Check COS (Commit On Sharing) status.
6250 * Return COS flag status.
6252 * \param mdt mdt device
6254 int mdt_cos_is_enabled(struct mdt_device *mdt)
6256 return mdt->mdt_opts.mo_cos != 0;
6259 /* type constructor/destructor: mdt_type_init, mdt_type_fini */
6260 LU_TYPE_INIT_FINI(mdt, &mdt_thread_key);
6262 static struct lu_device_type_operations mdt_device_type_ops = {
6263 .ldto_init = mdt_type_init,
6264 .ldto_fini = mdt_type_fini,
6266 .ldto_start = mdt_type_start,
6267 .ldto_stop = mdt_type_stop,
6269 .ldto_device_alloc = mdt_device_alloc,
6270 .ldto_device_free = mdt_device_free,
6271 .ldto_device_fini = mdt_device_fini
6274 static struct lu_device_type mdt_device_type = {
6275 .ldt_tags = LU_DEVICE_MD,
6276 .ldt_name = LUSTRE_MDT_NAME,
6277 .ldt_ops = &mdt_device_type_ops,
6278 .ldt_ctx_tags = LCT_MD_THREAD
6281 static int __init mdt_mod_init(void)
6283 struct lprocfs_static_vars lvars;
6286 rc = lu_kmem_init(mdt_caches);
6290 if (mdt_num_threads != 0 && mds_num_threads == 0) {
6291 LCONSOLE_INFO("mdt_num_threads module parameter is deprecated,"
6292 "use mds_num_threads instead or unset both for"
6293 "dynamic thread startup\n");
6294 mds_num_threads = mdt_num_threads;
6297 lprocfs_mdt_init_vars(&lvars);
6298 rc = class_register_type(&mdt_obd_device_ops, NULL,
6299 lvars.module_vars, LUSTRE_MDT_NAME,
6303 lu_kmem_fini(mdt_caches);
6307 static void __exit mdt_mod_exit(void)
6309 class_unregister_type(LUSTRE_MDT_NAME);
6310 lu_kmem_fini(mdt_caches);
6314 #define DEF_HNDL(prefix, base, suffix, flags, opc, fn, fmt) \
6315 [prefix ## _ ## opc - prefix ## _ ## base] = { \
6317 .mh_fail_id = OBD_FAIL_ ## prefix ## _ ## opc ## suffix, \
6318 .mh_opc = prefix ## _ ## opc, \
6319 .mh_flags = flags, \
6324 #define DEF_MDT_HNDL(flags, name, fn, fmt) \
6325 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, fmt)
6327 #define DEF_SEQ_HNDL(flags, name, fn, fmt) \
6328 DEF_HNDL(SEQ, QUERY, _NET, flags, name, fn, fmt)
6330 #define DEF_FLD_HNDL(flags, name, fn, fmt) \
6331 DEF_HNDL(FLD, QUERY, _NET, flags, name, fn, fmt)
6333 * Request with a format known in advance
6335 #define DEF_MDT_HNDL_F(flags, name, fn) \
6336 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, &RQF_MDS_ ## name)
6338 #define DEF_SEQ_HNDL_F(flags, name, fn) \
6339 DEF_HNDL(SEQ, QUERY, _NET, flags, name, fn, &RQF_SEQ_ ## name)
6341 #define DEF_FLD_HNDL_F(flags, name, fn) \
6342 DEF_HNDL(FLD, QUERY, _NET, flags, name, fn, &RQF_FLD_ ## name)
6344 * Request with a format we do not yet know
6346 #define DEF_MDT_HNDL_0(flags, name, fn) \
6347 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, NULL)
6349 static struct mdt_handler mdt_mds_ops[] = {
6350 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
6351 DEF_MDT_HNDL_F(0, DISCONNECT, mdt_disconnect),
6352 DEF_MDT_HNDL (0, SET_INFO, mdt_set_info,
6354 DEF_MDT_HNDL_F(0, GET_INFO, mdt_get_info),
6355 DEF_MDT_HNDL_F(0 |HABEO_REFERO, GETSTATUS, mdt_getstatus),
6356 DEF_MDT_HNDL_F(HABEO_CORPUS, GETATTR, mdt_getattr),
6357 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, GETATTR_NAME, mdt_getattr_name),
6358 DEF_MDT_HNDL_F(HABEO_CORPUS, GETXATTR, mdt_getxattr),
6359 DEF_MDT_HNDL_F(0 |HABEO_REFERO, STATFS, mdt_statfs),
6360 DEF_MDT_HNDL_F(0 |MUTABOR, REINT, mdt_reint),
6361 DEF_MDT_HNDL_F(HABEO_CORPUS, CLOSE, mdt_close),
6362 DEF_MDT_HNDL_F(HABEO_CORPUS, DONE_WRITING, mdt_done_writing),
6363 DEF_MDT_HNDL_F(0 |HABEO_REFERO, PIN, mdt_pin),
6364 DEF_MDT_HNDL_0(0, SYNC, mdt_sync),
6365 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, IS_SUBDIR, mdt_is_subdir),
6366 DEF_MDT_HNDL_F(0, QUOTACHECK, mdt_quotacheck),
6367 DEF_MDT_HNDL_F(0, QUOTACTL, mdt_quotactl)
6370 #define DEF_OBD_HNDL(flags, name, fn) \
6371 DEF_HNDL(OBD, PING, _NET, flags, name, fn, NULL)
6374 static struct mdt_handler mdt_obd_ops[] = {
6375 DEF_OBD_HNDL(0, PING, mdt_obd_ping),
6376 DEF_OBD_HNDL(0, LOG_CANCEL, mdt_obd_log_cancel),
6377 DEF_OBD_HNDL(0, QC_CALLBACK, mdt_obd_qc_callback),
6378 DEF_OBD_HNDL(0, IDX_READ, mdt_obd_idx_read)
6381 #define DEF_DLM_HNDL_0(flags, name, fn) \
6382 DEF_HNDL(LDLM, ENQUEUE, , flags, name, fn, NULL)
6383 #define DEF_DLM_HNDL_F(flags, name, fn) \
6384 DEF_HNDL(LDLM, ENQUEUE, , flags, name, fn, &RQF_LDLM_ ## name)
6386 static struct mdt_handler mdt_dlm_ops[] = {
6387 DEF_DLM_HNDL_F(HABEO_CLAVIS, ENQUEUE, mdt_enqueue),
6388 DEF_DLM_HNDL_0(HABEO_CLAVIS, CONVERT, mdt_convert),
6389 DEF_DLM_HNDL_0(0, BL_CALLBACK, mdt_bl_callback),
6390 DEF_DLM_HNDL_0(0, CP_CALLBACK, mdt_cp_callback)
6393 #define DEF_LLOG_HNDL(flags, name, fn) \
6394 DEF_HNDL(LLOG, ORIGIN_HANDLE_CREATE, _NET, flags, name, fn, NULL)
6396 static struct mdt_handler mdt_llog_ops[] = {
6397 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_CREATE, mdt_llog_create),
6398 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_NEXT_BLOCK, mdt_llog_next_block),
6399 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_READ_HEADER, mdt_llog_read_header),
6400 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_WRITE_REC, NULL),
6401 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_CLOSE, NULL),
6402 DEF_LLOG_HNDL(0, ORIGIN_CONNECT, NULL),
6403 DEF_LLOG_HNDL(0, CATINFO, NULL),
6404 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_PREV_BLOCK, mdt_llog_prev_block),
6405 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_DESTROY, mdt_llog_destroy),
6408 #define DEF_SEC_CTX_HNDL(name, fn) \
6409 DEF_HNDL(SEC_CTX, INIT, _NET, 0, name, fn, NULL)
6411 static struct mdt_handler mdt_sec_ctx_ops[] = {
6412 DEF_SEC_CTX_HNDL(INIT, mdt_sec_ctx_handle),
6413 DEF_SEC_CTX_HNDL(INIT_CONT, mdt_sec_ctx_handle),
6414 DEF_SEC_CTX_HNDL(FINI, mdt_sec_ctx_handle)
6417 static struct mdt_opc_slice mdt_regular_handlers[] = {
6419 .mos_opc_start = MDS_GETATTR,
6420 .mos_opc_end = MDS_LAST_OPC,
6421 .mos_hs = mdt_mds_ops
6424 .mos_opc_start = OBD_PING,
6425 .mos_opc_end = OBD_LAST_OPC,
6426 .mos_hs = mdt_obd_ops
6429 .mos_opc_start = LDLM_ENQUEUE,
6430 .mos_opc_end = LDLM_LAST_OPC,
6431 .mos_hs = mdt_dlm_ops
6434 .mos_opc_start = LLOG_ORIGIN_HANDLE_CREATE,
6435 .mos_opc_end = LLOG_LAST_OPC,
6436 .mos_hs = mdt_llog_ops
6439 .mos_opc_start = SEC_CTX_INIT,
6440 .mos_opc_end = SEC_LAST_OPC,
6441 .mos_hs = mdt_sec_ctx_ops
6448 static struct mdt_handler mdt_readpage_ops[] = {
6449 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
6450 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, READPAGE, mdt_readpage),
6451 #ifdef HAVE_SPLIT_SUPPORT
6452 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, WRITEPAGE, mdt_writepage),
6456 * XXX: this is ugly and should be fixed one day, see mdc_close() for
6457 * detailed comments. --umka
6459 DEF_MDT_HNDL_F(HABEO_CORPUS, CLOSE, mdt_close),
6460 DEF_MDT_HNDL_F(HABEO_CORPUS, DONE_WRITING, mdt_done_writing),
6463 static struct mdt_opc_slice mdt_readpage_handlers[] = {
6465 .mos_opc_start = MDS_GETATTR,
6466 .mos_opc_end = MDS_LAST_OPC,
6467 .mos_hs = mdt_readpage_ops
6470 .mos_opc_start = OBD_FIRST_OPC,
6471 .mos_opc_end = OBD_LAST_OPC,
6472 .mos_hs = mdt_obd_ops
6479 static struct mdt_handler mdt_xmds_ops[] = {
6480 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
6481 DEF_MDT_HNDL_F(HABEO_CORPUS , GETATTR, mdt_getattr),
6482 DEF_MDT_HNDL_F(0 | MUTABOR , REINT, mdt_reint),
6483 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, IS_SUBDIR, mdt_is_subdir),
6486 static struct mdt_opc_slice mdt_xmds_handlers[] = {
6488 .mos_opc_start = MDS_GETATTR,
6489 .mos_opc_end = MDS_LAST_OPC,
6490 .mos_hs = mdt_xmds_ops
6493 .mos_opc_start = OBD_PING,
6494 .mos_opc_end = OBD_LAST_OPC,
6495 .mos_hs = mdt_obd_ops
6498 .mos_opc_start = SEC_CTX_INIT,
6499 .mos_opc_end = SEC_LAST_OPC,
6500 .mos_hs = mdt_sec_ctx_ops
6507 static struct mdt_handler mdt_seq_ops[] = {
6508 DEF_SEQ_HNDL_F(0, QUERY, (int (*)(struct mdt_thread_info *))seq_query)
6511 static struct mdt_opc_slice mdt_seq_handlers[] = {
6513 .mos_opc_start = SEQ_QUERY,
6514 .mos_opc_end = SEQ_LAST_OPC,
6515 .mos_hs = mdt_seq_ops
6522 static struct mdt_handler mdt_fld_ops[] = {
6523 DEF_FLD_HNDL_F(0, QUERY, (int (*)(struct mdt_thread_info *))fld_query)
6526 static struct mdt_opc_slice mdt_fld_handlers[] = {
6528 .mos_opc_start = FLD_QUERY,
6529 .mos_opc_end = FLD_LAST_OPC,
6530 .mos_hs = mdt_fld_ops
6537 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
6538 MODULE_DESCRIPTION("Lustre Meta-data Target ("LUSTRE_MDT_NAME")");
6539 MODULE_LICENSE("GPL");
6541 cfs_module(mdt, "0.2.0", mdt_mod_init, mdt_mod_exit);