1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
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>
50 # define EXPORT_SYMTAB
52 #define DEBUG_SUBSYSTEM S_MDS
54 #include <linux/module.h>
56 * struct OBD_{ALLOC,FREE}*()
58 #include <obd_support.h>
59 /* struct ptlrpc_request */
60 #include <lustre_net.h>
61 /* struct obd_export */
62 #include <lustre_export.h>
63 /* struct obd_device */
66 #include <dt_object.h>
67 #include <lustre_mds.h>
68 #include <lustre_mdt.h>
69 #include "mdt_internal.h"
70 #ifdef HAVE_QUOTA_SUPPORT
71 # include <lustre_quota.h>
73 #include <lustre_acl.h>
74 #include <lustre_param.h>
75 #include <lustre_fsfilt.h>
77 mdl_mode_t mdt_mdl_lock_modes[] = {
78 [LCK_MINMODE] = MDL_MINMODE,
85 [LCK_GROUP] = MDL_GROUP
88 ldlm_mode_t mdt_dlm_lock_modes[] = {
89 [MDL_MINMODE] = LCK_MINMODE,
96 [MDL_GROUP] = LCK_GROUP
100 * Initialized in mdt_mod_init().
102 static unsigned long mdt_num_threads;
103 static unsigned long mdt_min_threads;
104 static unsigned long mdt_max_threads;
106 /* ptlrpc request handler for MDT. All handlers are
107 * grouped into several slices - struct mdt_opc_slice,
108 * and stored in an array - mdt_handlers[].
111 /* The name of this handler. */
113 /* Fail id for this handler, checked at the beginning of this handler*/
115 /* Operation code for this handler */
117 /* flags are listed in enum mdt_handler_flags below. */
119 /* The actual handler function to execute. */
120 int (*mh_act)(struct mdt_thread_info *info);
121 /* Request format for this request. */
122 const struct req_format *mh_fmt;
125 enum mdt_handler_flags {
127 * struct mdt_body is passed in the incoming message, and object
128 * identified by this fid exists on disk.
130 * "habeo corpus" == "I have a body"
132 HABEO_CORPUS = (1 << 0),
134 * struct ldlm_request is passed in the incoming message.
136 * "habeo clavis" == "I have a key"
138 HABEO_CLAVIS = (1 << 1),
140 * this request has fixed reply format, so that reply message can be
141 * packed by generic code.
143 * "habeo refero" == "I have a reply"
145 HABEO_REFERO = (1 << 2),
147 * this request will modify something, so check whether the filesystem
148 * is readonly or not, then return -EROFS to client asap if necessary.
150 * "mutabor" == "I shall modify"
155 struct mdt_opc_slice {
158 struct mdt_handler *mos_hs;
161 static struct mdt_opc_slice mdt_regular_handlers[];
162 static struct mdt_opc_slice mdt_readpage_handlers[];
163 static struct mdt_opc_slice mdt_xmds_handlers[];
164 static struct mdt_opc_slice mdt_seq_handlers[];
165 static struct mdt_opc_slice mdt_fld_handlers[];
167 static struct mdt_device *mdt_dev(struct lu_device *d);
168 static int mdt_regular_handle(struct ptlrpc_request *req);
169 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
170 static int mdt_fid2path(const struct lu_env *env, struct mdt_device *mdt,
171 struct getinfo_fid2path *fp);
173 static const struct lu_object_operations mdt_obj_ops;
175 int mdt_get_disposition(struct ldlm_reply *rep, int flag)
179 return (rep->lock_policy_res1 & flag);
182 void mdt_clear_disposition(struct mdt_thread_info *info,
183 struct ldlm_reply *rep, int flag)
186 info->mti_opdata &= ~flag;
188 rep->lock_policy_res1 &= ~flag;
191 void mdt_set_disposition(struct mdt_thread_info *info,
192 struct ldlm_reply *rep, int flag)
195 info->mti_opdata |= flag;
197 rep->lock_policy_res1 |= flag;
200 void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm)
202 lh->mlh_pdo_hash = 0;
203 lh->mlh_reg_mode = lm;
204 lh->mlh_type = MDT_REG_LOCK;
207 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, ldlm_mode_t lm,
208 const char *name, int namelen)
210 lh->mlh_reg_mode = lm;
211 lh->mlh_type = MDT_PDO_LOCK;
214 LASSERT(namelen > 0);
215 lh->mlh_pdo_hash = full_name_hash(name, namelen);
217 LASSERT(namelen == 0);
218 lh->mlh_pdo_hash = 0ull;
222 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
223 struct mdt_lock_handle *lh)
229 * Any dir access needs couple of locks:
231 * 1) on part of dir we gonna take lookup/modify;
233 * 2) on whole dir to protect it from concurrent splitting and/or to
234 * flush client's cache for readdir().
236 * so, for a given mode and object this routine decides what lock mode
237 * to use for lock #2:
239 * 1) if caller's gonna lookup in dir then we need to protect dir from
240 * being splitted only - LCK_CR
242 * 2) if caller's gonna modify dir then we need to protect dir from
243 * being splitted and to flush cache - LCK_CW
245 * 3) if caller's gonna modify dir and that dir seems ready for
246 * splitting then we need to protect it from any type of access
247 * (lookup/modify/split) - LCK_EX --bzzz
250 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
251 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
254 * Ask underlaying level its opinion about preferable PDO lock mode
255 * having access type passed as regular lock mode:
257 * - MDL_MINMODE means that lower layer does not want to specify lock
260 * - MDL_NL means that no PDO lock should be taken. This is used in some
261 * cases. Say, for non-splittable directories no need to use PDO locks
264 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
265 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
267 if (mode != MDL_MINMODE) {
268 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
271 * Lower layer does not want to specify locking mode. We do it
272 * our selves. No special protection is needed, just flush
273 * client's cache on modification and allow concurrent
276 switch (lh->mlh_reg_mode) {
278 lh->mlh_pdo_mode = LCK_EX;
281 lh->mlh_pdo_mode = LCK_CR;
284 lh->mlh_pdo_mode = LCK_CW;
287 CERROR("Not expected lock type (0x%x)\n",
288 (int)lh->mlh_reg_mode);
293 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
297 static int mdt_getstatus(struct mdt_thread_info *info)
299 struct mdt_device *mdt = info->mti_mdt;
300 struct md_device *next = mdt->mdt_child;
301 struct mdt_body *repbody;
306 rc = mdt_check_ucred(info);
308 RETURN(err_serious(rc));
310 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK))
311 RETURN(err_serious(-ENOMEM));
313 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
314 rc = next->md_ops->mdo_root_get(info->mti_env, next, &repbody->fid1);
318 repbody->valid |= OBD_MD_FLID;
320 if (mdt->mdt_opts.mo_mds_capa &&
321 info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) {
322 struct mdt_object *root;
323 struct lustre_capa *capa;
325 root = mdt_object_find(info->mti_env, mdt, &repbody->fid1);
327 RETURN(PTR_ERR(root));
329 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
331 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
332 rc = mo_capa_get(info->mti_env, mdt_object_child(root), capa,
334 mdt_object_put(info->mti_env, root);
336 repbody->valid |= OBD_MD_FLMDSCAPA;
342 static int mdt_statfs(struct mdt_thread_info *info)
344 struct md_device *next = info->mti_mdt->mdt_child;
345 struct ptlrpc_service *svc;
346 struct obd_statfs *osfs;
351 svc = info->mti_pill->rc_req->rq_rqbd->rqbd_service;
353 /* This will trigger a watchdog timeout */
354 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
355 (MDT_SERVICE_WATCHDOG_FACTOR *
356 at_get(&svc->srv_at_estimate)) + 1);
358 rc = mdt_check_ucred(info);
360 RETURN(err_serious(rc));
362 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK)) {
363 rc = err_serious(-ENOMEM);
365 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
366 rc = next->md_ops->mdo_statfs(info->mti_env, next,
368 statfs_pack(osfs, &info->mti_u.ksfs);
374 * Pack SOM attributes into the reply.
375 * Call under a DLM UPDATE lock.
377 static void mdt_pack_size2body(struct mdt_thread_info *info,
378 struct mdt_object *mo)
381 struct md_attr *ma = &info->mti_attr;
383 LASSERT(ma->ma_attr.la_valid & LA_MODE);
384 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
386 /* Check if Size-on-MDS is supported, if this is a regular file,
387 * if SOM is enabled on the object and if SOM cache exists and valid.
388 * Otherwise do not pack Size-on-MDS attributes to the reply. */
389 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
390 !S_ISREG(ma->ma_attr.la_mode) ||
391 !mdt_object_is_som_enabled(mo) ||
392 !(ma->ma_valid & MA_SOM))
395 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
396 b->size = ma->ma_som->msd_size;
397 b->blocks = ma->ma_som->msd_blocks;
400 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
401 const struct lu_attr *attr, const struct lu_fid *fid)
403 struct md_attr *ma = &info->mti_attr;
405 LASSERT(ma->ma_valid & MA_INODE);
407 b->atime = attr->la_atime;
408 b->mtime = attr->la_mtime;
409 b->ctime = attr->la_ctime;
410 b->mode = attr->la_mode;
411 b->size = attr->la_size;
412 b->blocks = attr->la_blocks;
413 b->uid = attr->la_uid;
414 b->gid = attr->la_gid;
415 b->flags = attr->la_flags;
416 b->nlink = attr->la_nlink;
417 b->rdev = attr->la_rdev;
419 /*XXX should pack the reply body according to lu_valid*/
420 b->valid |= OBD_MD_FLCTIME | OBD_MD_FLUID |
421 OBD_MD_FLGID | OBD_MD_FLTYPE |
422 OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLFLAGS |
423 OBD_MD_FLATIME | OBD_MD_FLMTIME ;
425 if (!S_ISREG(attr->la_mode)) {
426 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
427 } else if (ma->ma_need & MA_LOV && ma->ma_lmm_size == 0) {
428 /* means no objects are allocated on osts. */
429 LASSERT(!(ma->ma_valid & MA_LOV));
430 /* just ignore blocks occupied by extend attributes on MDS */
432 /* if no object is allocated on osts, the size on mds is valid. b=22272 */
433 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
438 b->valid |= OBD_MD_FLID;
440 /* FIXME: these should be fixed when new igif ready.*/
441 b->ino = fid_oid(fid); /* 1.6 compatibility */
442 b->generation = fid_ver(fid); /* 1.6 compatibility */
443 b->valid |= OBD_MD_FLGENER; /* 1.6 compatibility */
445 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, size="LPU64"\n",
446 PFID(fid), b->nlink, b->mode, b->size);
450 mdt_body_reverse_idmap(info, b);
452 if (b->valid & OBD_MD_FLSIZE)
453 CDEBUG(D_VFSTRACE, DFID": returning size %llu\n",
454 PFID(fid), (unsigned long long)b->size);
457 static inline int mdt_body_has_lov(const struct lu_attr *la,
458 const struct mdt_body *body)
460 return ((S_ISREG(la->la_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
461 (S_ISDIR(la->la_mode) && (body->valid & OBD_MD_FLDIREA )) );
464 static int mdt_getattr_internal(struct mdt_thread_info *info,
465 struct mdt_object *o, int ma_need)
467 struct md_object *next = mdt_object_child(o);
468 const struct mdt_body *reqbody = info->mti_body;
469 struct ptlrpc_request *req = mdt_info_req(info);
470 struct md_attr *ma = &info->mti_attr;
471 struct lu_attr *la = &ma->ma_attr;
472 struct req_capsule *pill = info->mti_pill;
473 const struct lu_env *env = info->mti_env;
474 struct mdt_body *repbody;
475 struct lu_buf *buffer = &info->mti_buf;
479 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
480 RETURN(err_serious(-ENOMEM));
482 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
486 rc = mdt_object_exists(o);
488 /* This object is located on remote node.*/
489 repbody->fid1 = *mdt_object_fid(o);
490 repbody->valid = OBD_MD_FLID | OBD_MD_MDS;
494 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
495 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD, RCL_SERVER);
497 /* If it is dir object and client require MEA, then we got MEA */
498 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
499 reqbody->valid & OBD_MD_MEA) {
500 /* Assumption: MDT_MD size is enough for lmv size. */
501 ma->ma_lmv = buffer->lb_buf;
502 ma->ma_lmv_size = buffer->lb_len;
503 ma->ma_need = MA_LMV | MA_INODE;
505 ma->ma_lmm = buffer->lb_buf;
506 ma->ma_lmm_size = buffer->lb_len;
507 ma->ma_need = MA_LOV | MA_INODE;
510 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
511 reqbody->valid & OBD_MD_FLDIREA &&
512 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
513 /* get default stripe info for this dir. */
514 ma->ma_need |= MA_LOV_DEF;
516 ma->ma_need |= ma_need;
517 if (ma->ma_need & MA_SOM)
518 ma->ma_som = &info->mti_u.som.data;
520 rc = mo_attr_get(env, next, ma);
522 CERROR("getattr error for "DFID": %d\n",
523 PFID(mdt_object_fid(o)), rc);
527 if (likely(ma->ma_valid & MA_INODE))
528 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
532 if (mdt_body_has_lov(la, reqbody)) {
533 if (ma->ma_valid & MA_LOV) {
534 LASSERT(ma->ma_lmm_size);
535 mdt_dump_lmm(D_INFO, ma->ma_lmm);
536 repbody->eadatasize = ma->ma_lmm_size;
537 if (S_ISDIR(la->la_mode))
538 repbody->valid |= OBD_MD_FLDIREA;
540 repbody->valid |= OBD_MD_FLEASIZE;
542 if (ma->ma_valid & MA_LMV) {
543 LASSERT(S_ISDIR(la->la_mode));
544 repbody->eadatasize = ma->ma_lmv_size;
545 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
547 } else if (S_ISLNK(la->la_mode) &&
548 reqbody->valid & OBD_MD_LINKNAME) {
549 buffer->lb_buf = ma->ma_lmm;
550 buffer->lb_len = reqbody->eadatasize;
551 rc = mo_readlink(env, next, buffer);
552 if (unlikely(rc <= 0)) {
553 CERROR("readlink failed: %d\n", rc);
556 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
558 repbody->valid |= OBD_MD_LINKNAME;
559 repbody->eadatasize = rc;
561 ((char*)ma->ma_lmm)[rc - 1] = 0;
562 CDEBUG(D_INODE, "symlink dest %s, len = %d\n",
563 (char*)ma->ma_lmm, rc);
568 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
569 repbody->max_cookiesize = info->mti_mdt->mdt_max_cookiesize;
570 repbody->max_mdsize = info->mti_mdt->mdt_max_mdsize;
571 repbody->valid |= OBD_MD_FLMODEASIZE;
572 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
573 "MAX_COOKIE to : %d:%d\n", repbody->max_mdsize,
574 repbody->max_cookiesize);
577 if (exp_connect_rmtclient(info->mti_exp) &&
578 reqbody->valid & OBD_MD_FLRMTPERM) {
579 void *buf = req_capsule_server_get(pill, &RMF_ACL);
581 /* mdt_getattr_lock only */
582 rc = mdt_pack_remote_perm(info, o, buf);
584 repbody->valid &= ~OBD_MD_FLRMTPERM;
585 repbody->aclsize = 0;
588 repbody->valid |= OBD_MD_FLRMTPERM;
589 repbody->aclsize = sizeof(struct mdt_remote_perm);
592 #ifdef CONFIG_FS_POSIX_ACL
593 else if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
594 (reqbody->valid & OBD_MD_FLACL)) {
595 buffer->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
596 buffer->lb_len = req_capsule_get_size(pill,
597 &RMF_ACL, RCL_SERVER);
598 if (buffer->lb_len > 0) {
599 rc = mo_xattr_get(env, next, buffer,
600 XATTR_NAME_ACL_ACCESS);
602 if (rc == -ENODATA) {
603 repbody->aclsize = 0;
604 repbody->valid |= OBD_MD_FLACL;
606 } else if (rc == -EOPNOTSUPP) {
609 CERROR("got acl size: %d\n", rc);
612 repbody->aclsize = rc;
613 repbody->valid |= OBD_MD_FLACL;
620 if (reqbody->valid & OBD_MD_FLMDSCAPA &&
621 info->mti_mdt->mdt_opts.mo_mds_capa &&
622 info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) {
623 struct lustre_capa *capa;
625 capa = req_capsule_server_get(pill, &RMF_CAPA1);
627 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
628 rc = mo_capa_get(env, next, capa, 0);
631 repbody->valid |= OBD_MD_FLMDSCAPA;
636 static int mdt_renew_capa(struct mdt_thread_info *info)
638 struct mdt_object *obj = info->mti_object;
639 struct mdt_body *body;
640 struct lustre_capa *capa, *c;
644 /* if object doesn't exist, or server has disabled capability,
645 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
648 if (!obj || !info->mti_mdt->mdt_opts.mo_oss_capa ||
649 !(info->mti_exp->exp_connect_flags & OBD_CONNECT_OSS_CAPA))
652 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
653 LASSERT(body != NULL);
655 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
658 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
662 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
664 body->valid |= OBD_MD_FLOSSCAPA;
668 static int mdt_getattr(struct mdt_thread_info *info)
670 struct mdt_object *obj = info->mti_object;
671 struct req_capsule *pill = info->mti_pill;
672 struct mdt_body *reqbody;
673 struct mdt_body *repbody;
679 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
682 if (reqbody->valid & OBD_MD_FLOSSCAPA) {
683 rc = req_capsule_server_pack(pill);
685 RETURN(err_serious(rc));
686 rc = mdt_renew_capa(info);
687 GOTO(out_shrink, rc);
690 LASSERT(obj != NULL);
691 LASSERT(lu_object_assert_exists(&obj->mot_obj.mo_lu));
693 mode = lu_object_attr(&obj->mot_obj.mo_lu);
694 if (S_ISLNK(mode) && (reqbody->valid & OBD_MD_LINKNAME) &&
695 (reqbody->eadatasize > info->mti_mdt->mdt_max_mdsize))
696 md_size = reqbody->eadatasize;
698 md_size = info->mti_mdt->mdt_max_mdsize;
700 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, md_size);
702 rc = req_capsule_server_pack(pill);
703 if (unlikely(rc != 0))
704 RETURN(err_serious(rc));
706 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
707 LASSERT(repbody != NULL);
708 repbody->eadatasize = 0;
709 repbody->aclsize = 0;
711 if (reqbody->valid & OBD_MD_FLRMTPERM)
712 rc = mdt_init_ucred(info, reqbody);
714 rc = mdt_check_ucred(info);
716 GOTO(out_shrink, rc);
718 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
719 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
722 * Don't check capability at all, because rename might getattr for
723 * remote obj, and at that time no capability is available.
725 mdt_set_capainfo(info, 1, &reqbody->fid1, BYPASS_CAPA);
726 rc = mdt_getattr_internal(info, obj, 0);
727 if (reqbody->valid & OBD_MD_FLRMTPERM)
728 mdt_exit_ucred(info);
731 mdt_shrink_reply(info);
735 static int mdt_is_subdir(struct mdt_thread_info *info)
737 struct mdt_object *o = info->mti_object;
738 struct req_capsule *pill = info->mti_pill;
739 const struct mdt_body *body = info->mti_body;
740 struct mdt_body *repbody;
746 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
749 * We save last checked parent fid to @repbody->fid1 for remote
752 LASSERT(fid_is_sane(&body->fid2));
753 LASSERT(mdt_object_exists(o) > 0);
754 rc = mdo_is_subdir(info->mti_env, mdt_object_child(o),
755 &body->fid2, &repbody->fid1);
756 if (rc == 0 || rc == -EREMOTE)
757 repbody->valid |= OBD_MD_FLID;
762 static int mdt_raw_lookup(struct mdt_thread_info *info,
763 struct mdt_object *parent,
764 const struct lu_name *lname,
765 struct ldlm_reply *ldlm_rep)
767 struct md_object *next = mdt_object_child(info->mti_object);
768 const struct mdt_body *reqbody = info->mti_body;
769 struct lu_fid *child_fid = &info->mti_tmp_fid1;
770 struct mdt_body *repbody;
774 if (reqbody->valid != OBD_MD_FLID)
777 LASSERT(!info->mti_cross_ref);
779 /* Only got the fid of this obj by name */
780 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
783 /* XXX is raw_lookup possible as intent operation? */
786 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
789 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
791 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
794 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
795 repbody->fid1 = *child_fid;
796 repbody->valid = OBD_MD_FLID;
802 * UPDATE lock should be taken against parent, and be release before exit;
803 * child_bits lock should be taken against child, and be returned back:
804 * (1)normal request should release the child lock;
805 * (2)intent request will grant the lock to client.
807 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
808 struct mdt_lock_handle *lhc,
810 struct ldlm_reply *ldlm_rep)
812 struct ptlrpc_request *req = mdt_info_req(info);
813 struct mdt_body *reqbody = NULL;
814 struct mdt_object *parent = info->mti_object;
815 struct mdt_object *child;
816 struct md_object *next = mdt_object_child(parent);
817 struct lu_fid *child_fid = &info->mti_tmp_fid1;
818 struct lu_name *lname = NULL;
819 const char *name = NULL;
821 struct mdt_lock_handle *lhp = NULL;
822 struct ldlm_lock *lock;
823 struct ldlm_res_id *res_id;
830 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
831 LASSERT(ergo(is_resent,
832 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
834 LASSERT(parent != NULL);
835 name = req_capsule_client_get(info->mti_pill, &RMF_NAME);
837 RETURN(err_serious(-EFAULT));
839 namelen = req_capsule_get_size(info->mti_pill, &RMF_NAME,
841 if (!info->mti_cross_ref) {
843 * XXX: Check for "namelen == 0" is for getattr by fid
844 * (OBD_CONNECT_ATTRFID), otherwise do not allow empty name,
845 * that is the name must contain at least one character and
846 * the terminating '\0'
849 reqbody = req_capsule_client_get(info->mti_pill,
851 if (unlikely(reqbody == NULL))
852 RETURN(err_serious(-EFAULT));
854 if (unlikely(!fid_is_sane(&reqbody->fid2)))
855 RETURN(err_serious(-EINVAL));
858 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
860 PFID(mdt_object_fid(parent)), PFID(&reqbody->fid2),
863 lname = mdt_name(info->mti_env, (char *)name, namelen);
864 CDEBUG(D_INODE, "getattr with lock for "DFID"/%s, "
865 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
869 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
871 rc = mdt_object_exists(parent);
872 if (unlikely(rc == 0)) {
873 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
874 &parent->mot_obj.mo_lu,
875 "Parent doesn't exist!\n");
877 } else if (!info->mti_cross_ref) {
878 LASSERTF(rc > 0, "Parent "DFID" is on remote server\n",
879 PFID(mdt_object_fid(parent)));
882 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
890 if (info->mti_cross_ref) {
891 /* Only getattr on the child. Parent is on another node. */
892 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
894 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
895 "ldlm_rep=%p\n", PFID(mdt_object_fid(child)), ldlm_rep);
898 /* Do not take lock for resent case. */
899 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
900 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
901 lhc->mlh_reg_lh.cookie);
902 LASSERT(fid_res_name_eq(mdt_object_fid(child),
903 &lock->l_resource->lr_name));
907 mdt_lock_handle_init(lhc);
908 mdt_lock_reg_init(lhc, LCK_PR);
911 * Object's name is on another MDS, no lookup lock is
912 * needed here but update is.
914 child_bits &= ~MDS_INODELOCK_LOOKUP;
915 child_bits |= MDS_INODELOCK_UPDATE;
917 rc = mdt_object_lock(info, child, lhc, child_bits,
921 /* Finally, we can get attr for child. */
922 mdt_set_capainfo(info, 0, mdt_object_fid(child),
924 rc = mdt_getattr_internal(info, child, 0);
925 if (unlikely(rc != 0))
926 mdt_object_unlock(info, child, lhc, 1);
932 /* step 1: lock parent */
933 lhp = &info->mti_lh[MDT_LH_PARENT];
934 mdt_lock_pdo_init(lhp, LCK_PR, name, namelen);
935 rc = mdt_object_lock(info, parent, lhp, MDS_INODELOCK_UPDATE,
937 if (unlikely(rc != 0))
940 /* step 2: lookup child's fid by name */
941 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
946 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
947 GOTO(out_parent, rc);
949 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
951 *child_fid = reqbody->fid2;
952 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
956 *step 3: find the child object by fid & lock it.
957 * regardless if it is local or remote.
959 child = mdt_object_find(info->mti_env, info->mti_mdt, child_fid);
961 if (unlikely(IS_ERR(child)))
962 GOTO(out_parent, rc = PTR_ERR(child));
964 /* Do not take lock for resent case. */
965 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
966 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
967 lhc->mlh_reg_lh.cookie);
969 res_id = &lock->l_resource->lr_name;
970 if (!fid_res_name_eq(mdt_object_fid(child),
971 &lock->l_resource->lr_name)) {
972 LASSERTF(fid_res_name_eq(mdt_object_fid(parent),
973 &lock->l_resource->lr_name),
974 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
975 (unsigned long)res_id->name[0],
976 (unsigned long)res_id->name[1],
977 (unsigned long)res_id->name[2],
978 PFID(mdt_object_fid(parent)));
979 CWARN("Although resent, but still not get child lock"
980 "parent:"DFID" child:"DFID"\n",
981 PFID(mdt_object_fid(parent)),
982 PFID(mdt_object_fid(child)));
983 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
991 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout*2);
992 mdt_lock_handle_init(lhc);
993 mdt_lock_reg_init(lhc, LCK_PR);
995 if (mdt_object_exists(child) == 0) {
996 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
997 &child->mot_obj.mo_lu,
998 "Object doesn't exist!\n");
999 GOTO(out_child, rc = -ENOENT);
1002 if (!(child_bits & MDS_INODELOCK_UPDATE)) {
1003 struct md_attr *ma = &info->mti_attr;
1006 ma->ma_need = MA_INODE;
1007 rc = mo_attr_get(info->mti_env,
1008 mdt_object_child(child), ma);
1009 if (unlikely(rc != 0))
1010 GOTO(out_child, rc);
1012 /* If the file has not been changed for some time, we
1013 * return not only a LOOKUP lock, but also an UPDATE
1014 * lock and this might save us RPC on later STAT. For
1015 * directories, it also let negative dentry starts
1016 * working for this dir. */
1017 if (ma->ma_valid & MA_INODE &&
1018 ma->ma_attr.la_valid & LA_CTIME &&
1019 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1020 ma->ma_attr.la_ctime < cfs_time_current_sec())
1021 child_bits |= MDS_INODELOCK_UPDATE;
1024 rc = mdt_object_lock(info, child, lhc, child_bits,
1027 if (unlikely(rc != 0))
1028 GOTO(out_child, rc);
1031 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1032 /* Get MA_SOM attributes if update lock is given. */
1034 lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_UPDATE &&
1035 S_ISREG(lu_object_attr(&mdt_object_child(child)->mo_lu)))
1038 /* finally, we can get attr for child. */
1039 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1040 rc = mdt_getattr_internal(info, child, ma_need);
1041 if (unlikely(rc != 0)) {
1042 mdt_object_unlock(info, child, lhc, 1);
1044 /* Debugging code. */
1045 res_id = &lock->l_resource->lr_name;
1046 LDLM_DEBUG(lock, "Returning lock to client");
1047 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1048 &lock->l_resource->lr_name),
1049 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
1050 (unsigned long)res_id->name[0],
1051 (unsigned long)res_id->name[1],
1052 (unsigned long)res_id->name[2],
1053 PFID(mdt_object_fid(child)));
1054 mdt_pack_size2body(info, child);
1057 LDLM_LOCK_PUT(lock);
1061 mdt_object_put(info->mti_env, child);
1064 mdt_object_unlock(info, parent, lhp, 1);
1068 /* normal handler: should release the child lock */
1069 static int mdt_getattr_name(struct mdt_thread_info *info)
1071 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1072 struct mdt_body *reqbody;
1073 struct mdt_body *repbody;
1077 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1078 LASSERT(reqbody != NULL);
1079 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1080 LASSERT(repbody != NULL);
1082 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
1083 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1084 repbody->eadatasize = 0;
1085 repbody->aclsize = 0;
1087 rc = mdt_init_ucred(info, reqbody);
1089 GOTO(out_shrink, rc);
1091 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1092 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1093 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1094 lhc->mlh_reg_lh.cookie = 0;
1096 mdt_exit_ucred(info);
1099 mdt_shrink_reply(info);
1103 static const struct lu_device_operations mdt_lu_ops;
1105 static int lu_device_is_mdt(struct lu_device *d)
1107 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &mdt_lu_ops);
1110 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1111 void *karg, void *uarg);
1113 static int mdt_set_info(struct mdt_thread_info *info)
1115 struct ptlrpc_request *req = mdt_info_req(info);
1118 int keylen, vallen, rc = 0;
1121 rc = req_capsule_server_pack(info->mti_pill);
1125 key = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_KEY);
1127 DEBUG_REQ(D_HA, req, "no set_info key");
1131 keylen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_KEY,
1134 val = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_VAL);
1136 DEBUG_REQ(D_HA, req, "no set_info val");
1140 vallen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_VAL,
1143 /* Swab any part of val you need to here */
1144 if (KEY_IS(KEY_READ_ONLY)) {
1146 lustre_msg_set_status(req->rq_repmsg, 0);
1148 cfs_spin_lock(&req->rq_export->exp_lock);
1150 req->rq_export->exp_connect_flags |= OBD_CONNECT_RDONLY;
1152 req->rq_export->exp_connect_flags &=~OBD_CONNECT_RDONLY;
1153 cfs_spin_unlock(&req->rq_export->exp_lock);
1155 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1156 struct changelog_setinfo *cs =
1157 (struct changelog_setinfo *)val;
1158 if (vallen != sizeof(*cs)) {
1159 CERROR("Bad changelog_clear setinfo size %d\n", vallen);
1162 if (ptlrpc_req_need_swab(req)) {
1163 __swab64s(&cs->cs_recno);
1164 __swab32s(&cs->cs_id);
1167 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, info->mti_exp,
1169 lustre_msg_set_status(req->rq_repmsg, rc);
1177 static int mdt_connect(struct mdt_thread_info *info)
1180 struct ptlrpc_request *req;
1182 req = mdt_info_req(info);
1183 rc = target_handle_connect(req);
1185 LASSERT(req->rq_export != NULL);
1186 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
1187 rc = mdt_init_sec_level(info);
1189 rc = mdt_init_idmap(info);
1191 obd_disconnect(class_export_get(req->rq_export));
1193 rc = err_serious(rc);
1198 static int mdt_disconnect(struct mdt_thread_info *info)
1203 rc = target_handle_disconnect(mdt_info_req(info));
1205 rc = err_serious(rc);
1209 static int mdt_sendpage(struct mdt_thread_info *info,
1210 struct lu_rdpg *rdpg)
1212 struct ptlrpc_request *req = mdt_info_req(info);
1213 struct obd_export *exp = req->rq_export;
1214 struct ptlrpc_bulk_desc *desc;
1215 struct l_wait_info *lwi = &info->mti_u.rdpg.mti_wait_info;
1223 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, BULK_PUT_SOURCE,
1228 for (i = 0, tmpcount = rdpg->rp_count;
1229 i < rdpg->rp_npages; i++, tmpcount -= tmpsize) {
1230 tmpsize = min_t(int, tmpcount, CFS_PAGE_SIZE);
1231 ptlrpc_prep_bulk_page(desc, rdpg->rp_pages[i], 0, tmpsize);
1234 LASSERT(desc->bd_nob == rdpg->rp_count);
1235 rc = sptlrpc_svc_wrap_bulk(req, desc);
1237 GOTO(free_desc, rc);
1239 rc = ptlrpc_start_bulk_transfer(desc);
1241 GOTO(free_desc, rc);
1243 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1244 GOTO(abort_bulk, rc = 0);
1247 timeout = (int) req->rq_deadline - cfs_time_current_sec();
1249 CERROR("Req deadline already passed %lu (now: %lu)\n",
1250 req->rq_deadline, cfs_time_current_sec());
1251 *lwi = LWI_TIMEOUT_INTERVAL(cfs_time_seconds(max(timeout, 1)),
1252 cfs_time_seconds(1), NULL, NULL);
1253 rc = l_wait_event(desc->bd_waitq,
1254 !ptlrpc_server_bulk_active(desc) ||
1256 exp->exp_abort_active_req, lwi);
1257 LASSERT (rc == 0 || rc == -ETIMEDOUT);
1258 } while ((rc == -ETIMEDOUT) &&
1259 (req->rq_deadline > cfs_time_current_sec()));
1262 if (desc->bd_success &&
1263 desc->bd_nob_transferred == rdpg->rp_count)
1264 GOTO(free_desc, rc);
1267 if (exp->exp_abort_active_req || exp->exp_failed)
1268 GOTO(abort_bulk, rc);
1271 DEBUG_REQ(D_ERROR, req, "bulk failed: %s %d(%d), evicting %s@%s",
1272 (rc == -ETIMEDOUT) ? "timeout" : "network error",
1273 desc->bd_nob_transferred, rdpg->rp_count,
1274 exp->exp_client_uuid.uuid,
1275 exp->exp_connection->c_remote_uuid.uuid);
1277 class_fail_export(exp);
1281 ptlrpc_abort_bulk(desc);
1283 ptlrpc_free_bulk(desc);
1287 #ifdef HAVE_SPLIT_SUPPORT
1289 * Retrieve dir entry from the page and insert it to the slave object, actually,
1290 * this should be in osd layer, but since it will not in the final product, so
1291 * just do it here and do not define more moo api anymore for this.
1293 static int mdt_write_dir_page(struct mdt_thread_info *info, struct page *page,
1296 struct mdt_object *object = info->mti_object;
1297 struct lu_fid *lf = &info->mti_tmp_fid2;
1298 struct md_attr *ma = &info->mti_attr;
1299 struct lu_dirpage *dp;
1300 struct lu_dirent *ent;
1301 int rc = 0, offset = 0;
1304 /* Make sure we have at least one entry. */
1309 * Disable trans for this name insert, since it will include many trans
1312 info->mti_no_need_trans = 1;
1314 * When write_dir_page, no need update parent's ctime,
1315 * and no permission check for name_insert.
1317 ma->ma_attr.la_ctime = 0;
1318 ma->ma_attr.la_valid = LA_MODE;
1319 ma->ma_valid = MA_INODE;
1322 dp = page_address(page);
1323 offset = (int)((__u32)lu_dirent_start(dp) - (__u32)dp);
1325 for (ent = lu_dirent_start(dp); ent != NULL;
1326 ent = lu_dirent_next(ent)) {
1327 struct lu_name *lname;
1330 if (le16_to_cpu(ent->lde_namelen) == 0)
1333 fid_le_to_cpu(lf, &ent->lde_fid);
1334 if (le64_to_cpu(ent->lde_hash) & MAX_HASH_HIGHEST_BIT)
1335 ma->ma_attr.la_mode = S_IFDIR;
1337 ma->ma_attr.la_mode = 0;
1338 OBD_ALLOC(name, le16_to_cpu(ent->lde_namelen) + 1);
1340 GOTO(out, rc = -ENOMEM);
1342 memcpy(name, ent->lde_name, le16_to_cpu(ent->lde_namelen));
1343 lname = mdt_name(info->mti_env, name,
1344 le16_to_cpu(ent->lde_namelen));
1345 ma->ma_attr_flags |= (MDS_PERM_BYPASS | MDS_QUOTA_IGNORE);
1346 rc = mdo_name_insert(info->mti_env,
1347 md_object_next(&object->mot_obj),
1349 OBD_FREE(name, le16_to_cpu(ent->lde_namelen) + 1);
1351 CERROR("Can't insert %*.*s, rc %d\n",
1352 le16_to_cpu(ent->lde_namelen),
1353 le16_to_cpu(ent->lde_namelen),
1358 offset += lu_dirent_size(ent);
1368 static int mdt_bulk_timeout(void *data)
1372 CERROR("mdt bulk transfer timeout \n");
1377 static int mdt_writepage(struct mdt_thread_info *info)
1379 struct ptlrpc_request *req = mdt_info_req(info);
1380 struct mdt_body *reqbody;
1381 struct l_wait_info *lwi;
1382 struct ptlrpc_bulk_desc *desc;
1388 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1389 if (reqbody == NULL)
1390 RETURN(err_serious(-EFAULT));
1392 desc = ptlrpc_prep_bulk_exp(req, 1, BULK_GET_SINK, MDS_BULK_PORTAL);
1394 RETURN(err_serious(-ENOMEM));
1396 /* allocate the page for the desc */
1397 page = cfs_alloc_page(CFS_ALLOC_STD);
1399 GOTO(desc_cleanup, rc = -ENOMEM);
1401 CDEBUG(D_INFO, "Received page offset %d size %d \n",
1402 (int)reqbody->size, (int)reqbody->nlink);
1404 ptlrpc_prep_bulk_page(desc, page, (int)reqbody->size,
1405 (int)reqbody->nlink);
1407 rc = sptlrpc_svc_prep_bulk(req, desc);
1409 GOTO(cleanup_page, rc);
1411 * Check if client was evicted while we were doing i/o before touching
1416 GOTO(cleanup_page, rc = -ENOMEM);
1418 if (desc->bd_export->exp_failed)
1421 rc = ptlrpc_start_bulk_transfer (desc);
1423 *lwi = LWI_TIMEOUT_INTERVAL(obd_timeout * CFS_HZ / 4, CFS_HZ,
1424 mdt_bulk_timeout, desc);
1425 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc) ||
1426 desc->bd_export->exp_failed, lwi);
1427 LASSERT(rc == 0 || rc == -ETIMEDOUT);
1428 if (rc == -ETIMEDOUT) {
1429 DEBUG_REQ(D_ERROR, req, "timeout on bulk GET");
1430 ptlrpc_abort_bulk(desc);
1431 } else if (desc->bd_export->exp_failed) {
1432 DEBUG_REQ(D_ERROR, req, "Eviction on bulk GET");
1434 ptlrpc_abort_bulk(desc);
1435 } else if (!desc->bd_success ||
1436 desc->bd_nob_transferred != desc->bd_nob) {
1437 DEBUG_REQ(D_ERROR, req, "%s bulk GET %d(%d)",
1439 "truncated" : "network error on",
1440 desc->bd_nob_transferred, desc->bd_nob);
1441 /* XXX should this be a different errno? */
1445 DEBUG_REQ(D_ERROR, req, "ptlrpc_bulk_get failed: rc %d", rc);
1448 GOTO(cleanup_lwi, rc);
1449 rc = mdt_write_dir_page(info, page, reqbody->nlink);
1454 cfs_free_page(page);
1456 ptlrpc_free_bulk(desc);
1461 static int mdt_readpage(struct mdt_thread_info *info)
1463 struct mdt_object *object = info->mti_object;
1464 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1465 struct mdt_body *reqbody;
1466 struct mdt_body *repbody;
1471 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1472 RETURN(err_serious(-ENOMEM));
1474 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1475 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1476 if (reqbody == NULL || repbody == NULL)
1477 RETURN(err_serious(-EFAULT));
1480 * prepare @rdpg before calling lower layers and transfer itself. Here
1481 * reqbody->size contains offset of where to start to read and
1482 * reqbody->nlink contains number bytes to read.
1484 rdpg->rp_hash = reqbody->size;
1485 if (rdpg->rp_hash != reqbody->size) {
1486 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1487 rdpg->rp_hash, reqbody->size);
1491 rdpg->rp_attrs = reqbody->mode;
1492 rdpg->rp_count = reqbody->nlink;
1493 rdpg->rp_npages = (rdpg->rp_count + CFS_PAGE_SIZE - 1)>>CFS_PAGE_SHIFT;
1494 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1495 if (rdpg->rp_pages == NULL)
1498 for (i = 0; i < rdpg->rp_npages; ++i) {
1499 rdpg->rp_pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
1500 if (rdpg->rp_pages[i] == NULL)
1501 GOTO(free_rdpg, rc = -ENOMEM);
1504 /* call lower layers to fill allocated pages with directory data */
1505 rc = mo_readpage(info->mti_env, mdt_object_child(object), rdpg);
1507 GOTO(free_rdpg, rc);
1509 /* send pages to client */
1510 rc = mdt_sendpage(info, rdpg);
1515 for (i = 0; i < rdpg->rp_npages; i++)
1516 if (rdpg->rp_pages[i] != NULL)
1517 cfs_free_page(rdpg->rp_pages[i]);
1518 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1520 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1526 static int mdt_reint_internal(struct mdt_thread_info *info,
1527 struct mdt_lock_handle *lhc,
1530 struct req_capsule *pill = info->mti_pill;
1531 struct mdt_device *mdt = info->mti_mdt;
1532 struct md_quota *mq = md_quota(info->mti_env);
1533 struct mdt_body *repbody;
1538 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1539 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1540 mdt->mdt_max_mdsize);
1541 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1542 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
1543 mdt->mdt_max_cookiesize);
1545 rc = req_capsule_server_pack(pill);
1547 CERROR("Can't pack response, rc %d\n", rc);
1548 RETURN(err_serious(rc));
1551 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1552 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1554 repbody->eadatasize = 0;
1555 repbody->aclsize = 0;
1558 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNPACK))
1559 GOTO(out_shrink, rc = err_serious(-EFAULT));
1561 rc = mdt_reint_unpack(info, op);
1563 CERROR("Can't unpack reint, rc %d\n", rc);
1564 GOTO(out_shrink, rc = err_serious(rc));
1567 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1569 /* for replay no cookkie / lmm need, because client have this already */
1570 if (info->mti_spec.no_create == 1) {
1571 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1572 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1574 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1575 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
1579 rc = mdt_init_ucred_reint(info);
1581 GOTO(out_shrink, rc);
1583 rc = mdt_fix_attr_ucred(info, op);
1585 GOTO(out_ucred, rc = err_serious(rc));
1587 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1588 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1589 GOTO(out_ucred, rc);
1591 mq->mq_exp = info->mti_exp;
1592 rc = mdt_reint_rec(info, lhc);
1595 mdt_exit_ucred(info);
1597 mdt_shrink_reply(info);
1601 static long mdt_reint_opcode(struct mdt_thread_info *info,
1602 const struct req_format **fmt)
1604 struct mdt_rec_reint *rec;
1607 opc = err_serious(-EFAULT);
1608 rec = req_capsule_client_get(info->mti_pill, &RMF_REC_REINT);
1610 opc = rec->rr_opcode;
1611 DEBUG_REQ(D_INODE, mdt_info_req(info), "reint opt = %ld", opc);
1612 if (opc < REINT_MAX && fmt[opc] != NULL)
1613 req_capsule_extend(info->mti_pill, fmt[opc]);
1615 CERROR("Unsupported opc: %ld\n", opc);
1616 opc = err_serious(opc);
1622 static int mdt_reint(struct mdt_thread_info *info)
1627 static const struct req_format *reint_fmts[REINT_MAX] = {
1628 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1629 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1630 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1631 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1632 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1633 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1634 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR
1639 opc = mdt_reint_opcode(info, reint_fmts);
1642 * No lock possible here from client to pass it to reint code
1645 rc = mdt_reint_internal(info, NULL, opc);
1650 info->mti_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1654 /* this should sync the whole device */
1655 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1657 struct dt_device *dt = mdt->mdt_bottom;
1661 rc = dt->dd_ops->dt_sync(env, dt);
1665 /* this should sync this object */
1666 static int mdt_object_sync(struct mdt_thread_info *info)
1668 struct md_object *next;
1672 if (!mdt_object_exists(info->mti_object)) {
1673 CWARN("Non existing object "DFID"!\n",
1674 PFID(mdt_object_fid(info->mti_object)));
1677 next = mdt_object_child(info->mti_object);
1678 rc = mo_object_sync(info->mti_env, next);
1683 static int mdt_sync(struct mdt_thread_info *info)
1685 struct req_capsule *pill = info->mti_pill;
1686 struct mdt_body *body;
1690 /* The fid may be zero, so we req_capsule_set manually */
1691 req_capsule_set(pill, &RQF_MDS_SYNC);
1693 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
1695 RETURN(err_serious(-EINVAL));
1697 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1698 RETURN(err_serious(-ENOMEM));
1700 if (fid_seq(&body->fid1) == 0) {
1701 /* sync the whole device */
1702 rc = req_capsule_server_pack(pill);
1704 rc = mdt_device_sync(info->mti_env, info->mti_mdt);
1706 rc = err_serious(rc);
1708 /* sync an object */
1709 rc = mdt_unpack_req_pack_rep(info, HABEO_CORPUS|HABEO_REFERO);
1711 rc = mdt_object_sync(info);
1713 struct md_object *next;
1714 const struct lu_fid *fid;
1715 struct lu_attr *la = &info->mti_attr.ma_attr;
1717 next = mdt_object_child(info->mti_object);
1718 info->mti_attr.ma_need = MA_INODE;
1719 info->mti_attr.ma_valid = 0;
1720 rc = mo_attr_get(info->mti_env, next,
1723 body = req_capsule_server_get(pill,
1725 fid = mdt_object_fid(info->mti_object);
1726 mdt_pack_attr2body(info, body, la, fid);
1730 rc = err_serious(rc);
1735 #ifdef HAVE_QUOTA_SUPPORT
1736 static int mdt_quotacheck_handle(struct mdt_thread_info *info)
1738 struct obd_quotactl *oqctl;
1739 struct req_capsule *pill = info->mti_pill;
1740 struct obd_export *exp = info->mti_exp;
1741 struct md_quota *mq = md_quota(info->mti_env);
1742 struct md_device *next = info->mti_mdt->mdt_child;
1746 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1750 /* remote client has no permission for quotacheck */
1751 if (unlikely(exp_connect_rmtclient(exp)))
1754 rc = req_capsule_server_pack(pill);
1759 rc = next->md_ops->mdo_quota.mqo_check(info->mti_env, next,
1764 static int mdt_quotactl_handle(struct mdt_thread_info *info)
1766 struct obd_quotactl *oqctl, *repoqc;
1767 struct req_capsule *pill = info->mti_pill;
1768 struct obd_export *exp = info->mti_exp;
1769 struct md_quota *mq = md_quota(info->mti_env);
1770 struct md_device *next = info->mti_mdt->mdt_child;
1771 const struct md_quota_operations *mqo = &next->md_ops->mdo_quota;
1775 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1780 if (exp_connect_rmtclient(exp)) {
1781 struct ptlrpc_request *req = mdt_info_req(info);
1782 struct mdt_export_data *med = mdt_req2med(req);
1783 struct lustre_idmap_table *idmap = med->med_idmap;
1785 if (unlikely(oqctl->qc_cmd != Q_GETQUOTA &&
1786 oqctl->qc_cmd != Q_GETINFO))
1790 if (oqctl->qc_type == USRQUOTA)
1791 id = lustre_idmap_lookup_uid(NULL, idmap, 0,
1793 else if (oqctl->qc_type == GRPQUOTA)
1794 id = lustre_idmap_lookup_gid(NULL, idmap, 0,
1799 if (id == CFS_IDMAP_NOTFOUND) {
1800 CDEBUG(D_QUOTA, "no mapping for id %u\n",
1806 rc = req_capsule_server_pack(pill);
1810 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
1811 LASSERT(repoqc != NULL);
1814 switch (oqctl->qc_cmd) {
1816 rc = mqo->mqo_on(info->mti_env, next, oqctl->qc_type);
1819 rc = mqo->mqo_off(info->mti_env, next, oqctl->qc_type);
1822 rc = mqo->mqo_setinfo(info->mti_env, next, oqctl->qc_type, id,
1826 rc = mqo->mqo_getinfo(info->mti_env, next, oqctl->qc_type, id,
1830 rc = mqo->mqo_setquota(info->mti_env, next, oqctl->qc_type, id,
1834 rc = mqo->mqo_getquota(info->mti_env, next, oqctl->qc_type, id,
1838 rc = mqo->mqo_getoinfo(info->mti_env, next, oqctl->qc_type, id,
1842 rc = mqo->mqo_getoquota(info->mti_env, next, oqctl->qc_type, id,
1845 case LUSTRE_Q_INVALIDATE:
1846 rc = mqo->mqo_invalidate(info->mti_env, next, oqctl->qc_type);
1848 case LUSTRE_Q_FINVALIDATE:
1849 rc = mqo->mqo_finvalidate(info->mti_env, next, oqctl->qc_type);
1852 CERROR("unsupported mdt_quotactl command: %d\n",
1864 * OBD PING and other handlers.
1866 static int mdt_obd_ping(struct mdt_thread_info *info)
1871 req_capsule_set(info->mti_pill, &RQF_OBD_PING);
1873 rc = target_handle_ping(mdt_info_req(info));
1875 rc = err_serious(rc);
1879 static int mdt_obd_log_cancel(struct mdt_thread_info *info)
1881 return err_serious(-EOPNOTSUPP);
1884 static int mdt_obd_qc_callback(struct mdt_thread_info *info)
1886 return err_serious(-EOPNOTSUPP);
1894 /** clone llog ctxt from child (mdd)
1895 * This allows remote llog (replicator) access.
1896 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
1897 * context was originally set up, or we can handle them directly.
1898 * I choose the latter, but that means I need any llog
1899 * contexts set up by child to be accessable by the mdt. So we clone the
1900 * context into our context list here.
1902 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
1905 struct md_device *next = mdt->mdt_child;
1906 struct llog_ctxt *ctxt;
1909 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
1912 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
1913 if (rc || ctxt == NULL) {
1914 CERROR("Can't get mdd ctxt %d\n", rc);
1918 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
1920 CERROR("Can't set mdt ctxt %d\n", rc);
1925 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
1926 struct mdt_device *mdt, int idx)
1928 struct llog_ctxt *ctxt;
1930 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
1933 /* Put once for the get we just did, and once for the clone */
1934 llog_ctxt_put(ctxt);
1935 llog_ctxt_put(ctxt);
1939 static int mdt_llog_create(struct mdt_thread_info *info)
1943 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_CREATE);
1944 rc = llog_origin_handle_create(mdt_info_req(info));
1945 return (rc < 0 ? err_serious(rc) : rc);
1948 static int mdt_llog_destroy(struct mdt_thread_info *info)
1952 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1953 rc = llog_origin_handle_destroy(mdt_info_req(info));
1954 return (rc < 0 ? err_serious(rc) : rc);
1957 static int mdt_llog_read_header(struct mdt_thread_info *info)
1961 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1962 rc = llog_origin_handle_read_header(mdt_info_req(info));
1963 return (rc < 0 ? err_serious(rc) : rc);
1966 static int mdt_llog_next_block(struct mdt_thread_info *info)
1970 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1971 rc = llog_origin_handle_next_block(mdt_info_req(info));
1972 return (rc < 0 ? err_serious(rc) : rc);
1975 static int mdt_llog_prev_block(struct mdt_thread_info *info)
1979 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1980 rc = llog_origin_handle_prev_block(mdt_info_req(info));
1981 return (rc < 0 ? err_serious(rc) : rc);
1988 static struct ldlm_callback_suite cbs = {
1989 .lcs_completion = ldlm_server_completion_ast,
1990 .lcs_blocking = ldlm_server_blocking_ast,
1994 static int mdt_enqueue(struct mdt_thread_info *info)
1996 struct ptlrpc_request *req;
2000 * info->mti_dlm_req already contains swapped and (if necessary)
2001 * converted dlm request.
2003 LASSERT(info->mti_dlm_req != NULL);
2005 req = mdt_info_req(info);
2006 rc = ldlm_handle_enqueue0(info->mti_mdt->mdt_namespace,
2007 req, info->mti_dlm_req, &cbs);
2008 info->mti_fail_id = OBD_FAIL_LDLM_REPLY;
2009 return rc ? err_serious(rc) : req->rq_status;
2012 static int mdt_convert(struct mdt_thread_info *info)
2015 struct ptlrpc_request *req;
2017 LASSERT(info->mti_dlm_req);
2018 req = mdt_info_req(info);
2019 rc = ldlm_handle_convert0(req, info->mti_dlm_req);
2020 return rc ? err_serious(rc) : req->rq_status;
2023 static int mdt_bl_callback(struct mdt_thread_info *info)
2025 CERROR("bl callbacks should not happen on MDS\n");
2027 return err_serious(-EOPNOTSUPP);
2030 static int mdt_cp_callback(struct mdt_thread_info *info)
2032 CERROR("cp callbacks should not happen on MDS\n");
2034 return err_serious(-EOPNOTSUPP);
2038 * sec context handlers
2040 static int mdt_sec_ctx_handle(struct mdt_thread_info *info)
2044 rc = mdt_handle_idmap(info);
2047 struct ptlrpc_request *req = mdt_info_req(info);
2050 opc = lustre_msg_get_opc(req->rq_reqmsg);
2051 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
2052 sptlrpc_svc_ctx_invalidate(req);
2055 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
2060 static struct mdt_object *mdt_obj(struct lu_object *o)
2062 LASSERT(lu_device_is_mdt(o->lo_dev));
2063 return container_of0(o, struct mdt_object, mot_obj.mo_lu);
2066 struct mdt_object *mdt_object_find(const struct lu_env *env,
2067 struct mdt_device *d,
2068 const struct lu_fid *f)
2070 struct lu_object *o;
2071 struct mdt_object *m;
2074 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2075 o = lu_object_find(env, &d->mdt_md_dev.md_lu_dev, f, NULL);
2076 if (unlikely(IS_ERR(o)))
2077 m = (struct mdt_object *)o;
2084 * Asyncronous commit for mdt device.
2086 * Pass asynchonous commit call down the MDS stack.
2088 * \param env environment
2089 * \param mdt the mdt device
2091 static void mdt_device_commit_async(const struct lu_env *env,
2092 struct mdt_device *mdt)
2094 struct dt_device *dt = mdt->mdt_bottom;
2097 rc = dt->dd_ops->dt_commit_async(env, dt);
2098 if (unlikely(rc != 0))
2099 CWARN("async commit start failed with rc = %d", rc);
2103 * Mark the lock as "synchonous".
2105 * Mark the lock to deffer transaction commit to the unlock time.
2107 * \param lock the lock to mark as "synchonous"
2109 * \see mdt_is_lock_sync
2110 * \see mdt_save_lock
2112 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2114 lock->l_ast_data = (void*)1;
2118 * Check whehter the lock "synchonous" or not.
2120 * \param lock the lock to check
2121 * \retval 1 the lock is "synchonous"
2122 * \retval 0 the lock isn't "synchronous"
2124 * \see mdt_set_lock_sync
2125 * \see mdt_save_lock
2127 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2129 return lock->l_ast_data != NULL;
2133 * Blocking AST for mdt locks.
2135 * Starts transaction commit if in case of COS lock conflict or
2136 * deffers such a commit to the mdt_save_lock.
2138 * \param lock the lock which blocks a request or cancelling lock
2139 * \param desc unused
2140 * \param data unused
2141 * \param flag indicates whether this cancelling or blocking callback
2143 * \see ldlm_blocking_ast_nocheck
2145 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2146 void *data, int flag)
2148 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2149 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2153 if (flag == LDLM_CB_CANCELING)
2155 lock_res_and_lock(lock);
2156 if (lock->l_blocking_ast != mdt_blocking_ast) {
2157 unlock_res_and_lock(lock);
2160 if (mdt_cos_is_enabled(mdt) &&
2161 lock->l_req_mode & (LCK_PW | LCK_EX) &&
2162 lock->l_blocking_lock != NULL &&
2163 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
2164 mdt_set_lock_sync(lock);
2166 rc = ldlm_blocking_ast_nocheck(lock);
2168 /* There is no lock conflict if l_blocking_lock == NULL,
2169 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2170 * when the last reference to a local lock was released */
2171 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2174 rc = lu_env_init(&env, LCT_MD_THREAD);
2175 if (unlikely(rc != 0))
2176 CWARN("lu_env initialization failed with rc = %d,"
2177 "cannot start asynchronous commit\n", rc);
2179 mdt_device_commit_async(&env, mdt);
2185 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2186 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2188 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2189 ldlm_policy_data_t *policy = &info->mti_policy;
2190 struct ldlm_res_id *res_id = &info->mti_res_id;
2194 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2195 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2196 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2197 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2199 if (mdt_object_exists(o) < 0) {
2200 if (locality == MDT_CROSS_LOCK) {
2201 /* cross-ref object fix */
2202 ibits &= ~MDS_INODELOCK_UPDATE;
2203 ibits |= MDS_INODELOCK_LOOKUP;
2205 LASSERT(!(ibits & MDS_INODELOCK_UPDATE));
2206 LASSERT(ibits & MDS_INODELOCK_LOOKUP);
2208 /* No PDO lock on remote object */
2209 LASSERT(lh->mlh_type != MDT_PDO_LOCK);
2212 if (lh->mlh_type == MDT_PDO_LOCK) {
2213 /* check for exists after object is locked */
2214 if (mdt_object_exists(o) == 0) {
2215 /* Non-existent object shouldn't have PDO lock */
2218 /* Non-dir object shouldn't have PDO lock */
2219 if (!S_ISDIR(lu_object_attr(&o->mot_obj.mo_lu)))
2224 memset(policy, 0, sizeof(*policy));
2225 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2228 * Take PDO lock on whole directory and build correct @res_id for lock
2229 * on part of directory.
2231 if (lh->mlh_pdo_hash != 0) {
2232 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2233 mdt_lock_pdo_mode(info, o, lh);
2234 if (lh->mlh_pdo_mode != LCK_NL) {
2236 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2237 * is never going to be sent to client and we do not
2238 * want it slowed down due to possible cancels.
2240 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2241 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2242 policy, res_id, LDLM_FL_ATOMIC_CB,
2243 &info->mti_exp->exp_handle.h_cookie);
2249 * Finish res_id initializing by name hash marking part of
2250 * directory which is taking modification.
2252 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2255 policy->l_inodebits.bits = ibits;
2258 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2259 * going to be sent to client. If it is - mdt_intent_policy() path will
2260 * fix it up and turn FL_LOCAL flag off.
2262 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2263 res_id, LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB,
2264 &info->mti_exp->exp_handle.h_cookie);
2266 mdt_object_unlock(info, o, lh, 1);
2267 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2268 lh->mlh_pdo_hash != 0 &&
2269 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX)) {
2270 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 10);
2277 * Save a lock within request object.
2279 * Keep the lock referenced until whether client ACK or transaction
2280 * commit happens or release the lock immediately depending on input
2281 * parameters. If COS is ON, a write lock is converted to COS lock
2284 * \param info thead info object
2285 * \param h lock handle
2286 * \param mode lock mode
2287 * \param decref force immediate lock releasing
2290 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2291 ldlm_mode_t mode, int decref)
2295 if (lustre_handle_is_used(h)) {
2296 if (decref || !info->mti_has_trans ||
2297 !(mode & (LCK_PW | LCK_EX))){
2298 mdt_fid_unlock(h, mode);
2300 struct mdt_device *mdt = info->mti_mdt;
2301 struct ldlm_lock *lock = ldlm_handle2lock(h);
2302 struct ptlrpc_request *req = mdt_info_req(info);
2305 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2307 CDEBUG(D_HA, "request = %p reply state = %p"
2308 " transno = "LPD64"\n",
2309 req, req->rq_reply_state, req->rq_transno);
2310 if (mdt_cos_is_enabled(mdt)) {
2312 ldlm_lock_downgrade(lock, LCK_COS);
2315 ptlrpc_save_lock(req, h, mode, no_ack);
2316 if (mdt_is_lock_sync(lock)) {
2317 CDEBUG(D_HA, "found sync-lock,"
2318 " async commit started\n");
2319 mdt_device_commit_async(info->mti_env,
2322 LDLM_LOCK_PUT(lock);
2331 * Unlock mdt object.
2333 * Immeditely release the regular lock and the PDO lock or save the
2334 * lock in reqeuest and keep them referenced until client ACK or
2335 * transaction commit.
2337 * \param info thread info object
2338 * \param o mdt object
2339 * \param lh mdt lock handle referencing regular and PDO locks
2340 * \param decref force immediate lock releasing
2342 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2343 struct mdt_lock_handle *lh, int decref)
2347 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2348 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2353 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2354 const struct lu_fid *f,
2355 struct mdt_lock_handle *lh,
2358 struct mdt_object *o;
2360 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2364 rc = mdt_object_lock(info, o, lh, ibits,
2367 mdt_object_put(info->mti_env, o);
2374 void mdt_object_unlock_put(struct mdt_thread_info * info,
2375 struct mdt_object * o,
2376 struct mdt_lock_handle *lh,
2379 mdt_object_unlock(info, o, lh, decref);
2380 mdt_object_put(info->mti_env, o);
2383 static struct mdt_handler *mdt_handler_find(__u32 opc,
2384 struct mdt_opc_slice *supported)
2386 struct mdt_opc_slice *s;
2387 struct mdt_handler *h;
2390 for (s = supported; s->mos_hs != NULL; s++) {
2391 if (s->mos_opc_start <= opc && opc < s->mos_opc_end) {
2392 h = s->mos_hs + (opc - s->mos_opc_start);
2393 if (likely(h->mh_opc != 0))
2394 LASSERTF(h->mh_opc == opc,
2395 "opcode mismatch %d != %d\n",
2398 h = NULL; /* unsupported opc */
2405 static int mdt_lock_resname_compat(struct mdt_device *m,
2406 struct ldlm_request *req)
2408 /* XXX something... later. */
2412 static int mdt_lock_reply_compat(struct mdt_device *m, struct ldlm_reply *rep)
2414 /* XXX something... later. */
2419 * Generic code handling requests that have struct mdt_body passed in:
2421 * - extract mdt_body from request and save it in @info, if present;
2423 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2426 * - if HABEO_CORPUS flag is set for this request type check whether object
2427 * actually exists on storage (lu_object_exists()).
2430 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2432 const struct mdt_body *body;
2433 struct mdt_object *obj;
2434 const struct lu_env *env;
2435 struct req_capsule *pill;
2439 env = info->mti_env;
2440 pill = info->mti_pill;
2442 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2446 if (!(body->valid & OBD_MD_FLID))
2449 if (!fid_is_sane(&body->fid1)) {
2450 CERROR("Invalid fid: "DFID"\n", PFID(&body->fid1));
2455 * Do not get size or any capa fields before we check that request
2456 * contains capa actually. There are some requests which do not, for
2457 * instance MDS_IS_SUBDIR.
2459 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2460 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2461 mdt_set_capainfo(info, 0, &body->fid1,
2462 req_capsule_client_get(pill, &RMF_CAPA1));
2464 obj = mdt_object_find(env, info->mti_mdt, &body->fid1);
2466 if ((flags & HABEO_CORPUS) &&
2467 !mdt_object_exists(obj)) {
2468 mdt_object_put(env, obj);
2469 /* for capability renew ENOENT will be handled in
2471 if (body->valid & OBD_MD_FLOSSCAPA)
2476 info->mti_object = obj;
2485 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2487 struct req_capsule *pill = info->mti_pill;
2491 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2492 rc = mdt_body_unpack(info, flags);
2496 if (rc == 0 && (flags & HABEO_REFERO)) {
2497 struct mdt_device *mdt = info->mti_mdt;
2501 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2502 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2503 mdt->mdt_max_mdsize);
2504 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2505 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
2506 mdt->mdt_max_cookiesize);
2508 rc = req_capsule_server_pack(pill);
2513 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2515 struct md_device *next = m->mdt_child;
2517 return next->md_ops->mdo_init_capa_ctxt(env, next,
2518 m->mdt_opts.mo_mds_capa,
2519 m->mdt_capa_timeout,
2525 * Invoke handler for this request opc. Also do necessary preprocessing
2526 * (according to handler ->mh_flags), and post-processing (setting of
2527 * ->last_{xid,committed}).
2529 static int mdt_req_handle(struct mdt_thread_info *info,
2530 struct mdt_handler *h, struct ptlrpc_request *req)
2532 int rc, serious = 0;
2537 LASSERT(h->mh_act != NULL);
2538 LASSERT(h->mh_opc == lustre_msg_get_opc(req->rq_reqmsg));
2539 LASSERT(current->journal_info == NULL);
2542 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
2543 * to put same checks into handlers like mdt_close(), mdt_reint(),
2544 * etc., without talking to mdt authors first. Checking same thing
2545 * there again is useless and returning 0 error without packing reply
2546 * is buggy! Handlers either pack reply or return error.
2548 * We return 0 here and do not send any reply in order to emulate
2549 * network failure. Do not send any reply in case any of NET related
2550 * fail_id has occured.
2552 if (OBD_FAIL_CHECK_ORSET(h->mh_fail_id, OBD_FAIL_ONCE))
2556 flags = h->mh_flags;
2557 LASSERT(ergo(flags & (HABEO_CORPUS|HABEO_REFERO), h->mh_fmt != NULL));
2559 if (h->mh_fmt != NULL) {
2560 req_capsule_set(info->mti_pill, h->mh_fmt);
2561 rc = mdt_unpack_req_pack_rep(info, flags);
2564 if (rc == 0 && flags & MUTABOR &&
2565 req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
2566 /* should it be rq_status? */
2569 if (rc == 0 && flags & HABEO_CLAVIS) {
2570 struct ldlm_request *dlm_req;
2572 LASSERT(h->mh_fmt != NULL);
2574 dlm_req = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2575 if (dlm_req != NULL) {
2576 if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
2578 dlm_req->lock_desc.l_policy_data.\
2579 l_inodebits.bits == 0)) {
2581 * Lock without inodebits makes no sense and
2582 * will oops later in ldlm. If client miss to
2583 * set such bits, do not trigger ASSERTION.
2585 * For liblustre flock case, it maybe zero.
2589 if (info->mti_mdt->mdt_opts.mo_compat_resname)
2590 rc = mdt_lock_resname_compat(
2593 info->mti_dlm_req = dlm_req;
2600 /* capability setting changed via /proc, needs reinitialize ctxt */
2601 if (info->mti_mdt && info->mti_mdt->mdt_capa_conf) {
2602 mdt_init_capa_ctxt(info->mti_env, info->mti_mdt);
2603 info->mti_mdt->mdt_capa_conf = 0;
2606 if (likely(rc == 0)) {
2608 * Process request, there can be two types of rc:
2609 * 1) errors with msg unpack/pack, other failures outside the
2610 * operation itself. This is counted as serious errors;
2611 * 2) errors during fs operation, should be placed in rq_status
2614 rc = h->mh_act(info);
2616 !req->rq_no_reply && req->rq_reply_state == NULL) {
2617 DEBUG_REQ(D_ERROR, req, "MDT \"handler\" %s did not "
2618 "pack reply and returned 0 error\n",
2622 serious = is_serious(rc);
2623 rc = clear_serious(rc);
2627 req->rq_status = rc;
2630 * ELDLM_* codes which > 0 should be in rq_status only as well as
2631 * all non-serious errors.
2633 if (rc > 0 || !serious)
2636 LASSERT(current->journal_info == NULL);
2638 if (rc == 0 && (flags & HABEO_CLAVIS) &&
2639 info->mti_mdt->mdt_opts.mo_compat_resname) {
2640 struct ldlm_reply *dlmrep;
2642 dlmrep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
2644 rc = mdt_lock_reply_compat(info->mti_mdt, dlmrep);
2647 /* If we're DISCONNECTing, the mdt_export_data is already freed */
2648 if (likely(rc == 0 && req->rq_export && h->mh_opc != MDS_DISCONNECT))
2649 target_committed_to_req(req);
2651 if (unlikely(req_is_replay(req) &&
2652 lustre_msg_get_transno(req->rq_reqmsg) == 0)) {
2653 DEBUG_REQ(D_ERROR, req, "transno is 0 during REPLAY");
2657 target_send_reply(req, rc, info->mti_fail_id);
2661 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2663 lh->mlh_type = MDT_NUL_LOCK;
2664 lh->mlh_reg_lh.cookie = 0ull;
2665 lh->mlh_reg_mode = LCK_MINMODE;
2666 lh->mlh_pdo_lh.cookie = 0ull;
2667 lh->mlh_pdo_mode = LCK_MINMODE;
2670 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2672 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2673 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2677 * Initialize fields of struct mdt_thread_info. Other fields are left in
2678 * uninitialized state, because it's too expensive to zero out whole
2679 * mdt_thread_info (> 1K) on each request arrival.
2681 static void mdt_thread_info_init(struct ptlrpc_request *req,
2682 struct mdt_thread_info *info)
2685 struct md_capainfo *ci;
2687 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
2688 info->mti_pill = &req->rq_pill;
2691 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2692 mdt_lock_handle_init(&info->mti_lh[i]);
2694 /* mdt device: it can be NULL while CONNECT */
2695 if (req->rq_export) {
2696 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2697 info->mti_exp = req->rq_export;
2699 info->mti_mdt = NULL;
2700 info->mti_env = req->rq_svc_thread->t_env;
2701 ci = md_capainfo(info->mti_env);
2702 memset(ci, 0, sizeof *ci);
2703 if (req->rq_export) {
2704 if (exp_connect_rmtclient(req->rq_export))
2705 ci->mc_auth = LC_ID_CONVERT;
2706 else if (req->rq_export->exp_connect_flags &
2707 OBD_CONNECT_MDS_CAPA)
2708 ci->mc_auth = LC_ID_PLAIN;
2710 ci->mc_auth = LC_ID_NONE;
2713 info->mti_fail_id = OBD_FAIL_MDS_ALL_REPLY_NET;
2714 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2715 info->mti_mos = NULL;
2717 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2718 info->mti_body = NULL;
2719 info->mti_object = NULL;
2720 info->mti_dlm_req = NULL;
2721 info->mti_has_trans = 0;
2722 info->mti_no_need_trans = 0;
2723 info->mti_cross_ref = 0;
2724 info->mti_opdata = 0;
2726 /* To not check for split by default. */
2727 info->mti_spec.sp_ck_split = 0;
2728 info->mti_spec.no_create = 0;
2731 static void mdt_thread_info_fini(struct mdt_thread_info *info)
2735 req_capsule_fini(info->mti_pill);
2736 if (info->mti_object != NULL) {
2738 * freeing an object may lead to OSD level transaction, do not
2739 * let it mess with MDT. bz19385.
2741 info->mti_no_need_trans = 1;
2742 mdt_object_put(info->mti_env, info->mti_object);
2743 info->mti_object = NULL;
2745 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2746 mdt_lock_handle_fini(&info->mti_lh[i]);
2747 info->mti_env = NULL;
2750 static int mdt_filter_recovery_request(struct ptlrpc_request *req,
2751 struct obd_device *obd, int *process)
2753 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2754 case MDS_CONNECT: /* This will never get here, but for completeness. */
2755 case OST_CONNECT: /* This will never get here, but for completeness. */
2756 case MDS_DISCONNECT:
2757 case OST_DISCONNECT:
2762 case MDS_DONE_WRITING:
2763 case MDS_SYNC: /* used in unmounting */
2769 *process = target_queue_recovery_request(req, obd);
2773 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
2780 * Handle recovery. Return:
2781 * +1: continue request processing;
2782 * -ve: abort immediately with the given error code;
2783 * 0: send reply with error code in req->rq_status;
2785 static int mdt_recovery(struct mdt_thread_info *info)
2787 struct ptlrpc_request *req = mdt_info_req(info);
2788 struct obd_device *obd;
2792 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2795 case SEC_CTX_INIT_CONT:
2801 rc = mdt_handle_idmap(info);
2810 if (unlikely(!class_connected_export(req->rq_export))) {
2811 CERROR("operation %d on unconnected MDS from %s\n",
2812 lustre_msg_get_opc(req->rq_reqmsg),
2813 libcfs_id2str(req->rq_peer));
2814 /* FIXME: For CMD cleanup, when mds_B stop, the req from
2815 * mds_A will get -ENOTCONN(especially for ping req),
2816 * which will cause that mds_A deactive timeout, then when
2817 * mds_A cleanup, the cleanup process will be suspended since
2818 * deactive timeout is not zero.
2820 req->rq_status = -ENOTCONN;
2821 target_send_reply(req, -ENOTCONN, info->mti_fail_id);
2825 /* sanity check: if the xid matches, the request must be marked as a
2826 * resent or replayed */
2827 if (req_xid_is_last(req)) {
2828 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
2829 (MSG_RESENT | MSG_REPLAY))) {
2830 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches last_xid, "
2831 "expected REPLAY or RESENT flag (%x)", req->rq_xid,
2832 lustre_msg_get_flags(req->rq_reqmsg));
2834 req->rq_status = -ENOTCONN;
2839 /* else: note the opposite is not always true; a RESENT req after a
2840 * failover will usually not match the last_xid, since it was likely
2841 * never committed. A REPLAYed request will almost never match the
2842 * last xid, however it could for a committed, but still retained,
2845 obd = req->rq_export->exp_obd;
2847 /* Check for aborted recovery... */
2848 if (unlikely(obd->obd_recovering)) {
2851 DEBUG_REQ(D_INFO, req, "Got new replay");
2852 rc = mdt_filter_recovery_request(req, obd, &should_process);
2853 if (rc != 0 || !should_process)
2855 else if (should_process < 0) {
2856 req->rq_status = should_process;
2857 rc = ptlrpc_error(req);
2864 static int mdt_msg_check_version(struct lustre_msg *msg)
2868 switch (lustre_msg_get_opc(msg)) {
2870 case MDS_DISCONNECT:
2873 case SEC_CTX_INIT_CONT:
2875 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
2877 CERROR("bad opc %u version %08x, expecting %08x\n",
2878 lustre_msg_get_opc(msg),
2879 lustre_msg_get_version(msg),
2880 LUSTRE_OBD_VERSION);
2884 case MDS_GETATTR_NAME:
2891 case MDS_DONE_WRITING:
2898 case MDS_QUOTACHECK:
2904 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
2906 CERROR("bad opc %u version %08x, expecting %08x\n",
2907 lustre_msg_get_opc(msg),
2908 lustre_msg_get_version(msg),
2909 LUSTRE_MDS_VERSION);
2913 case LDLM_BL_CALLBACK:
2914 case LDLM_CP_CALLBACK:
2915 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
2917 CERROR("bad opc %u version %08x, expecting %08x\n",
2918 lustre_msg_get_opc(msg),
2919 lustre_msg_get_version(msg),
2920 LUSTRE_DLM_VERSION);
2922 case OBD_LOG_CANCEL:
2923 case LLOG_ORIGIN_HANDLE_CREATE:
2924 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
2925 case LLOG_ORIGIN_HANDLE_READ_HEADER:
2926 case LLOG_ORIGIN_HANDLE_CLOSE:
2927 case LLOG_ORIGIN_HANDLE_DESTROY:
2928 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
2930 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
2932 CERROR("bad opc %u version %08x, expecting %08x\n",
2933 lustre_msg_get_opc(msg),
2934 lustre_msg_get_version(msg),
2935 LUSTRE_LOG_VERSION);
2938 CERROR("MDS unknown opcode %d\n", lustre_msg_get_opc(msg));
2944 static int mdt_handle0(struct ptlrpc_request *req,
2945 struct mdt_thread_info *info,
2946 struct mdt_opc_slice *supported)
2948 struct mdt_handler *h;
2949 struct lustre_msg *msg;
2954 if (OBD_FAIL_CHECK_ORSET(OBD_FAIL_MDS_ALL_REQUEST_NET, OBD_FAIL_ONCE))
2957 LASSERT(current->journal_info == NULL);
2959 msg = req->rq_reqmsg;
2960 rc = mdt_msg_check_version(msg);
2961 if (likely(rc == 0)) {
2962 rc = mdt_recovery(info);
2963 if (likely(rc == +1)) {
2964 h = mdt_handler_find(lustre_msg_get_opc(msg),
2966 if (likely(h != NULL)) {
2967 rc = mdt_req_handle(info, h, req);
2969 CERROR("The unsupported opc: 0x%x\n",
2970 lustre_msg_get_opc(msg) );
2971 req->rq_status = -ENOTSUPP;
2972 rc = ptlrpc_error(req);
2977 CERROR(LUSTRE_MDT_NAME" drops mal-formed request\n");
2982 * MDT handler function called by ptlrpc service thread when request comes.
2984 * XXX common "target" functionality should be factored into separate module
2985 * shared by mdt, ost and stand-alone services like fld.
2987 static int mdt_handle_common(struct ptlrpc_request *req,
2988 struct mdt_opc_slice *supported)
2991 struct mdt_thread_info *info;
2995 env = req->rq_svc_thread->t_env;
2996 LASSERT(env != NULL);
2997 LASSERT(env->le_ses != NULL);
2998 LASSERT(env->le_ctx.lc_thread == req->rq_svc_thread);
2999 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3000 LASSERT(info != NULL);
3002 mdt_thread_info_init(req, info);
3004 rc = mdt_handle0(req, info, supported);
3006 mdt_thread_info_fini(info);
3011 * This is called from recovery code as handler of _all_ RPC types, FLD and SEQ
3014 int mdt_recovery_handle(struct ptlrpc_request *req)
3019 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3021 rc = mdt_handle_common(req, mdt_fld_handlers);
3024 rc = mdt_handle_common(req, mdt_seq_handlers);
3027 rc = mdt_handle_common(req, mdt_regular_handlers);
3034 static int mdt_regular_handle(struct ptlrpc_request *req)
3036 return mdt_handle_common(req, mdt_regular_handlers);
3039 static int mdt_readpage_handle(struct ptlrpc_request *req)
3041 return mdt_handle_common(req, mdt_readpage_handlers);
3044 static int mdt_xmds_handle(struct ptlrpc_request *req)
3046 return mdt_handle_common(req, mdt_xmds_handlers);
3049 static int mdt_mdsc_handle(struct ptlrpc_request *req)
3051 return mdt_handle_common(req, mdt_seq_handlers);
3054 static int mdt_mdss_handle(struct ptlrpc_request *req)
3056 return mdt_handle_common(req, mdt_seq_handlers);
3059 static int mdt_dtss_handle(struct ptlrpc_request *req)
3061 return mdt_handle_common(req, mdt_seq_handlers);
3064 static int mdt_fld_handle(struct ptlrpc_request *req)
3066 return mdt_handle_common(req, mdt_fld_handlers);
3082 static int mdt_intent_getattr(enum mdt_it_code opcode,
3083 struct mdt_thread_info *info,
3084 struct ldlm_lock **,
3086 static int mdt_intent_reint(enum mdt_it_code opcode,
3087 struct mdt_thread_info *info,
3088 struct ldlm_lock **,
3091 static struct mdt_it_flavor {
3092 const struct req_format *it_fmt;
3094 int (*it_act)(enum mdt_it_code ,
3095 struct mdt_thread_info *,
3096 struct ldlm_lock **,
3099 } mdt_it_flavor[] = {
3101 .it_fmt = &RQF_LDLM_INTENT,
3102 /*.it_flags = HABEO_REFERO,*/
3104 .it_act = mdt_intent_reint,
3105 .it_reint = REINT_OPEN
3108 .it_fmt = &RQF_LDLM_INTENT,
3109 .it_flags = MUTABOR,
3110 .it_act = mdt_intent_reint,
3111 .it_reint = REINT_OPEN
3114 .it_fmt = &RQF_LDLM_INTENT,
3115 .it_flags = MUTABOR,
3116 .it_act = mdt_intent_reint,
3117 .it_reint = REINT_CREATE
3119 [MDT_IT_GETATTR] = {
3120 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3121 .it_flags = HABEO_REFERO,
3122 .it_act = mdt_intent_getattr
3124 [MDT_IT_READDIR] = {
3130 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3131 .it_flags = HABEO_REFERO,
3132 .it_act = mdt_intent_getattr
3135 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
3136 .it_flags = MUTABOR,
3138 .it_reint = REINT_UNLINK
3142 .it_flags = MUTABOR,
3145 [MDT_IT_GETXATTR] = {
3152 int mdt_intent_lock_replace(struct mdt_thread_info *info,
3153 struct ldlm_lock **lockp,
3154 struct ldlm_lock *new_lock,
3155 struct mdt_lock_handle *lh,
3158 struct ptlrpc_request *req = mdt_info_req(info);
3159 struct ldlm_lock *lock = *lockp;
3162 * Get new lock only for cases when possible resent did not find any
3165 if (new_lock == NULL)
3166 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3168 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3169 lh->mlh_reg_lh.cookie = 0;
3173 LASSERTF(new_lock != NULL,
3174 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
3177 * If we've already given this lock to a client once, then we should
3178 * have no readers or writers. Otherwise, we should have one reader
3179 * _or_ writer ref (which will be zeroed below) before returning the
3182 if (new_lock->l_export == req->rq_export) {
3183 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3185 LASSERT(new_lock->l_export == NULL);
3186 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3191 if (new_lock->l_export == req->rq_export) {
3193 * Already gave this to the client, which means that we
3194 * reconstructed a reply.
3196 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3198 lh->mlh_reg_lh.cookie = 0;
3199 RETURN(ELDLM_LOCK_REPLACED);
3203 * Fixup the lock to be given to the client.
3205 lock_res_and_lock(new_lock);
3206 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3207 * possible blocking AST. */
3208 while (new_lock->l_readers > 0) {
3209 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3210 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3211 new_lock->l_readers--;
3213 while (new_lock->l_writers > 0) {
3214 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3215 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3216 new_lock->l_writers--;
3219 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3220 new_lock->l_blocking_ast = lock->l_blocking_ast;
3221 new_lock->l_completion_ast = lock->l_completion_ast;
3222 new_lock->l_remote_handle = lock->l_remote_handle;
3223 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3225 unlock_res_and_lock(new_lock);
3227 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3228 &new_lock->l_remote_handle,
3229 &new_lock->l_exp_hash);
3231 LDLM_LOCK_RELEASE(new_lock);
3232 lh->mlh_reg_lh.cookie = 0;
3234 RETURN(ELDLM_LOCK_REPLACED);
3237 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3238 struct ldlm_lock *new_lock,
3239 struct ldlm_lock **old_lock,
3240 struct mdt_lock_handle *lh)
3242 struct ptlrpc_request *req = mdt_info_req(info);
3243 struct obd_export *exp = req->rq_export;
3244 struct lustre_handle remote_hdl;
3245 struct ldlm_request *dlmreq;
3246 struct ldlm_lock *lock;
3248 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3251 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3252 remote_hdl = dlmreq->lock_handle[0];
3254 lock = cfs_hash_lookup(exp->exp_lock_hash, &remote_hdl);
3256 if (lock != new_lock) {
3257 lh->mlh_reg_lh.cookie = lock->l_handle.h_cookie;
3258 lh->mlh_reg_mode = lock->l_granted_mode;
3260 LDLM_DEBUG(lock, "Restoring lock cookie");
3261 DEBUG_REQ(D_DLMTRACE, req,
3262 "restoring lock cookie "LPX64,
3263 lh->mlh_reg_lh.cookie);
3265 *old_lock = LDLM_LOCK_GET(lock);
3266 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
3270 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
3274 * If the xid matches, then we know this is a resent request, and allow
3275 * it. (It's probably an OPEN, for which we don't send a lock.
3277 if (req_xid_is_last(req))
3281 * This remote handle isn't enqueued, so we never received or processed
3282 * this request. Clear MSG_RESENT, because it can be handled like any
3283 * normal request now.
3285 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3287 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
3291 static int mdt_intent_getattr(enum mdt_it_code opcode,
3292 struct mdt_thread_info *info,
3293 struct ldlm_lock **lockp,
3296 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3297 struct ldlm_lock *new_lock = NULL;
3299 struct ldlm_reply *ldlm_rep;
3300 struct ptlrpc_request *req;
3301 struct mdt_body *reqbody;
3302 struct mdt_body *repbody;
3306 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3309 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3312 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
3313 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
3314 repbody->eadatasize = 0;
3315 repbody->aclsize = 0;
3319 child_bits = MDS_INODELOCK_LOOKUP;
3321 case MDT_IT_GETATTR:
3322 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE;
3325 CERROR("Unhandled till now");
3326 GOTO(out_shrink, rc = -EINVAL);
3329 rc = mdt_init_ucred(info, reqbody);
3331 GOTO(out_shrink, rc);
3333 req = info->mti_pill->rc_req;
3334 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3335 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3337 /* Get lock from request for possible resent case. */
3338 mdt_intent_fixup_resent(info, *lockp, &new_lock, lhc);
3340 ldlm_rep->lock_policy_res2 =
3341 mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3343 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3344 ldlm_rep->lock_policy_res2 = 0;
3345 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3346 ldlm_rep->lock_policy_res2) {
3347 lhc->mlh_reg_lh.cookie = 0ull;
3348 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3351 rc = mdt_intent_lock_replace(info, lockp, new_lock, lhc, flags);
3354 mdt_exit_ucred(info);
3356 mdt_shrink_reply(info);
3360 static int mdt_intent_reint(enum mdt_it_code opcode,
3361 struct mdt_thread_info *info,
3362 struct ldlm_lock **lockp,
3365 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3366 struct ldlm_reply *rep = NULL;
3370 static const struct req_format *intent_fmts[REINT_MAX] = {
3371 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3372 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3377 opc = mdt_reint_opcode(info, intent_fmts);
3381 if (mdt_it_flavor[opcode].it_reint != opc) {
3382 CERROR("Reint code %ld doesn't match intent: %d\n",
3384 RETURN(err_serious(-EPROTO));
3387 /* Get lock from request for possible resent case. */
3388 mdt_intent_fixup_resent(info, *lockp, NULL, lhc);
3390 rc = mdt_reint_internal(info, lhc, opc);
3392 /* Check whether the reply has been packed successfully. */
3393 if (mdt_info_req(info)->rq_repmsg != NULL)
3394 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3396 RETURN(err_serious(-EFAULT));
3398 /* MDC expects this in any case */
3400 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3402 /* Cross-ref case, the lock should be returned to the client */
3403 if (rc == -EREMOTE) {
3404 LASSERT(lustre_handle_is_used(&lhc->mlh_reg_lh));
3405 rep->lock_policy_res2 = 0;
3406 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3409 rep->lock_policy_res2 = clear_serious(rc);
3411 if (rc == -ENOTCONN || rc == -ENODEV ||
3412 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3414 * If it is the disconnect error (ENODEV & ENOCONN), the error
3415 * will be returned by rq_status, and client at ptlrpc layer
3416 * will detect this, then disconnect, reconnect the import
3417 * immediately, instead of impacting the following the rpc.
3419 lhc->mlh_reg_lh.cookie = 0ull;
3423 * For other cases, the error will be returned by intent.
3424 * and client will retrieve the result from intent.
3427 * FIXME: when open lock is finished, that should be
3430 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3431 LASSERTF(rc == 0, "Error occurred but lock handle "
3432 "is still in use\n");
3433 rep->lock_policy_res2 = 0;
3434 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3437 lhc->mlh_reg_lh.cookie = 0ull;
3438 RETURN(ELDLM_LOCK_ABORTED);
3443 static int mdt_intent_code(long itcode)
3451 case IT_OPEN|IT_CREAT:
3458 rc = MDT_IT_READDIR;
3461 rc = MDT_IT_GETATTR;
3473 rc = MDT_IT_GETXATTR;
3476 CERROR("Unknown intent opcode: %ld\n", itcode);
3483 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
3484 struct ldlm_lock **lockp, int flags)
3486 struct req_capsule *pill;
3487 struct mdt_it_flavor *flv;
3492 opc = mdt_intent_code(itopc);
3496 pill = info->mti_pill;
3497 flv = &mdt_it_flavor[opc];
3499 if (flv->it_fmt != NULL)
3500 req_capsule_extend(pill, flv->it_fmt);
3502 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
3504 struct ptlrpc_request *req = mdt_info_req(info);
3505 if (flv->it_flags & MUTABOR &&
3506 req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
3509 if (rc == 0 && flv->it_act != NULL) {
3510 /* execute policy */
3511 rc = flv->it_act(opc, info, lockp, flags);
3518 static int mdt_intent_policy(struct ldlm_namespace *ns,
3519 struct ldlm_lock **lockp, void *req_cookie,
3520 ldlm_mode_t mode, int flags, void *data)
3522 struct mdt_thread_info *info;
3523 struct ptlrpc_request *req = req_cookie;
3524 struct ldlm_intent *it;
3525 struct req_capsule *pill;
3530 LASSERT(req != NULL);
3532 info = lu_context_key_get(&req->rq_svc_thread->t_env->le_ctx,
3534 LASSERT(info != NULL);
3535 pill = info->mti_pill;
3536 LASSERT(pill->rc_req == req);
3538 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
3539 req_capsule_extend(pill, &RQF_LDLM_INTENT);
3540 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
3542 rc = mdt_intent_opc(it->opc, info, lockp, flags);
3546 /* Lock without inodebits makes no sense and will oops
3547 * later in ldlm. Let's check it now to see if we have
3548 * ibits corrupted somewhere in mdt_intent_opc().
3549 * The case for client miss to set ibits has been
3550 * processed by others. */
3551 LASSERT(ergo(info->mti_dlm_req->lock_desc.l_resource.\
3552 lr_type == LDLM_IBITS,
3553 info->mti_dlm_req->lock_desc.\
3554 l_policy_data.l_inodebits.bits != 0));
3556 rc = err_serious(-EFAULT);
3558 /* No intent was provided */
3559 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
3560 rc = req_capsule_server_pack(pill);
3562 rc = err_serious(rc);
3567 static int mdt_seq_fini(const struct lu_env *env,
3568 struct mdt_device *m)
3570 struct md_site *ms = mdt_md_site(m);
3574 if (ms->ms_server_seq) {
3575 seq_server_fini(ms->ms_server_seq, env);
3576 OBD_FREE_PTR(ms->ms_server_seq);
3577 ms->ms_server_seq = NULL;
3580 if (ms->ms_control_seq) {
3581 seq_server_fini(ms->ms_control_seq, env);
3582 OBD_FREE_PTR(ms->ms_control_seq);
3583 ms->ms_control_seq = NULL;
3586 if (ms->ms_client_seq) {
3587 seq_client_fini(ms->ms_client_seq);
3588 OBD_FREE_PTR(ms->ms_client_seq);
3589 ms->ms_client_seq = NULL;
3596 static int mdt_seq_init(const struct lu_env *env,
3598 struct mdt_device *m)
3605 ms = mdt_md_site(m);
3608 * This is sequence-controller node. Init seq-controller server on local
3611 if (ms->ms_node_id == 0) {
3612 LASSERT(ms->ms_control_seq == NULL);
3614 OBD_ALLOC_PTR(ms->ms_control_seq);
3615 if (ms->ms_control_seq == NULL)
3618 rc = seq_server_init(ms->ms_control_seq,
3619 m->mdt_bottom, uuid,
3620 LUSTRE_SEQ_CONTROLLER,
3625 GOTO(out_seq_fini, rc);
3627 OBD_ALLOC_PTR(ms->ms_client_seq);
3628 if (ms->ms_client_seq == NULL)
3629 GOTO(out_seq_fini, rc = -ENOMEM);
3631 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3632 if (prefix == NULL) {
3633 OBD_FREE_PTR(ms->ms_client_seq);
3634 GOTO(out_seq_fini, rc = -ENOMEM);
3637 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
3641 * Init seq-controller client after seq-controller server is
3642 * ready. Pass ms->ms_control_seq to it for direct talking.
3644 rc = seq_client_init(ms->ms_client_seq, NULL,
3645 LUSTRE_SEQ_METADATA, prefix,
3646 ms->ms_control_seq);
3647 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3650 GOTO(out_seq_fini, rc);
3653 /* Init seq-server on local MDT */
3654 LASSERT(ms->ms_server_seq == NULL);
3656 OBD_ALLOC_PTR(ms->ms_server_seq);
3657 if (ms->ms_server_seq == NULL)
3658 GOTO(out_seq_fini, rc = -ENOMEM);
3660 rc = seq_server_init(ms->ms_server_seq,
3661 m->mdt_bottom, uuid,
3666 GOTO(out_seq_fini, rc = -ENOMEM);
3668 /* Assign seq-controller client to local seq-server. */
3669 if (ms->ms_node_id == 0) {
3670 LASSERT(ms->ms_client_seq != NULL);
3672 rc = seq_server_set_cli(ms->ms_server_seq,
3680 mdt_seq_fini(env, m);
3685 * Init client sequence manager which is used by local MDS to talk to sequence
3686 * controller on remote node.
3688 static int mdt_seq_init_cli(const struct lu_env *env,
3689 struct mdt_device *m,
3690 struct lustre_cfg *cfg)
3692 struct md_site *ms = mdt_md_site(m);
3693 struct obd_device *mdc;
3694 struct obd_uuid *uuidp, *mdcuuidp;
3695 char *uuid_str, *mdc_uuid_str;
3698 struct mdt_thread_info *info;
3699 char *p, *index_string = lustre_cfg_string(cfg, 2);
3702 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3703 uuidp = &info->mti_u.uuid[0];
3704 mdcuuidp = &info->mti_u.uuid[1];
3706 LASSERT(index_string);
3708 index = simple_strtol(index_string, &p, 10);
3710 CERROR("Invalid index in lustre_cgf, offset 2\n");
3714 /* check if this is adding the first MDC and controller is not yet
3716 if (index != 0 || ms->ms_client_seq)
3719 uuid_str = lustre_cfg_string(cfg, 1);
3720 mdc_uuid_str = lustre_cfg_string(cfg, 4);
3721 obd_str2uuid(uuidp, uuid_str);
3722 obd_str2uuid(mdcuuidp, mdc_uuid_str);
3724 mdc = class_find_client_obd(uuidp, LUSTRE_MDC_NAME, mdcuuidp);
3726 CERROR("can't find controller MDC by uuid %s\n",
3729 } else if (!mdc->obd_set_up) {
3730 CERROR("target %s not set up\n", mdc->obd_name);
3733 LASSERT(ms->ms_control_exp);
3734 OBD_ALLOC_PTR(ms->ms_client_seq);
3735 if (ms->ms_client_seq != NULL) {
3738 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3742 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
3745 rc = seq_client_init(ms->ms_client_seq,
3747 LUSTRE_SEQ_METADATA,
3749 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3756 LASSERT(ms->ms_server_seq != NULL);
3757 rc = seq_server_set_cli(ms->ms_server_seq, ms->ms_client_seq,
3764 static void mdt_seq_fini_cli(struct mdt_device *m)
3770 ms = mdt_md_site(m);
3773 if (ms->ms_server_seq)
3774 seq_server_set_cli(ms->ms_server_seq,
3777 if (ms->ms_control_exp) {
3778 class_export_put(ms->ms_control_exp);
3779 ms->ms_control_exp = NULL;
3788 static int mdt_fld_fini(const struct lu_env *env,
3789 struct mdt_device *m)
3791 struct md_site *ms = mdt_md_site(m);
3794 if (ms && ms->ms_server_fld) {
3795 fld_server_fini(ms->ms_server_fld, env);
3796 OBD_FREE_PTR(ms->ms_server_fld);
3797 ms->ms_server_fld = NULL;
3803 static int mdt_fld_init(const struct lu_env *env,
3805 struct mdt_device *m)
3811 ms = mdt_md_site(m);
3813 OBD_ALLOC_PTR(ms->ms_server_fld);
3814 if (ms->ms_server_fld == NULL)
3815 RETURN(rc = -ENOMEM);
3817 rc = fld_server_init(ms->ms_server_fld,
3818 m->mdt_bottom, uuid,
3819 env, ms->ms_node_id);
3821 OBD_FREE_PTR(ms->ms_server_fld);
3822 ms->ms_server_fld = NULL;
3829 /* device init/fini methods */
3830 static void mdt_stop_ptlrpc_service(struct mdt_device *m)
3833 if (m->mdt_regular_service != NULL) {
3834 ptlrpc_unregister_service(m->mdt_regular_service);
3835 m->mdt_regular_service = NULL;
3837 if (m->mdt_readpage_service != NULL) {
3838 ptlrpc_unregister_service(m->mdt_readpage_service);
3839 m->mdt_readpage_service = NULL;
3841 if (m->mdt_xmds_service != NULL) {
3842 ptlrpc_unregister_service(m->mdt_xmds_service);
3843 m->mdt_xmds_service = NULL;
3845 if (m->mdt_setattr_service != NULL) {
3846 ptlrpc_unregister_service(m->mdt_setattr_service);
3847 m->mdt_setattr_service = NULL;
3849 if (m->mdt_mdsc_service != NULL) {
3850 ptlrpc_unregister_service(m->mdt_mdsc_service);
3851 m->mdt_mdsc_service = NULL;
3853 if (m->mdt_mdss_service != NULL) {
3854 ptlrpc_unregister_service(m->mdt_mdss_service);
3855 m->mdt_mdss_service = NULL;
3857 if (m->mdt_dtss_service != NULL) {
3858 ptlrpc_unregister_service(m->mdt_dtss_service);
3859 m->mdt_dtss_service = NULL;
3861 if (m->mdt_fld_service != NULL) {
3862 ptlrpc_unregister_service(m->mdt_fld_service);
3863 m->mdt_fld_service = NULL;
3868 static int mdt_start_ptlrpc_service(struct mdt_device *m)
3871 static struct ptlrpc_service_conf conf;
3872 cfs_proc_dir_entry_t *procfs_entry;
3875 procfs_entry = m->mdt_md_dev.md_lu_dev.ld_obd->obd_proc_entry;
3877 conf = (typeof(conf)) {
3878 .psc_nbufs = MDS_NBUFS,
3879 .psc_bufsize = MDS_BUFSIZE,
3880 .psc_max_req_size = MDS_MAXREQSIZE,
3881 .psc_max_reply_size = MDS_MAXREPSIZE,
3882 .psc_req_portal = MDS_REQUEST_PORTAL,
3883 .psc_rep_portal = MDC_REPLY_PORTAL,
3884 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3886 * We'd like to have a mechanism to set this on a per-device
3887 * basis, but alas...
3889 .psc_min_threads = mdt_min_threads,
3890 .psc_max_threads = mdt_max_threads,
3891 .psc_ctx_tags = LCT_MD_THREAD
3894 m->mdt_ldlm_client = &m->mdt_md_dev.md_lu_dev.ld_obd->obd_ldlm_client;
3895 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
3896 "mdt_ldlm_client", m->mdt_ldlm_client);
3898 m->mdt_regular_service =
3899 ptlrpc_init_svc_conf(&conf, mdt_regular_handle, LUSTRE_MDT_NAME,
3900 procfs_entry, target_print_req,
3902 if (m->mdt_regular_service == NULL)
3905 rc = ptlrpc_start_threads(m->mdt_regular_service);
3907 GOTO(err_mdt_svc, rc);
3910 * readpage service configuration. Parameters have to be adjusted,
3913 conf = (typeof(conf)) {
3914 .psc_nbufs = MDS_NBUFS,
3915 .psc_bufsize = MDS_BUFSIZE,
3916 .psc_max_req_size = MDS_MAXREQSIZE,
3917 .psc_max_reply_size = MDS_MAXREPSIZE,
3918 .psc_req_portal = MDS_READPAGE_PORTAL,
3919 .psc_rep_portal = MDC_REPLY_PORTAL,
3920 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3921 .psc_min_threads = mdt_min_threads,
3922 .psc_max_threads = mdt_max_threads,
3923 .psc_ctx_tags = LCT_MD_THREAD
3925 m->mdt_readpage_service =
3926 ptlrpc_init_svc_conf(&conf, mdt_readpage_handle,
3927 LUSTRE_MDT_NAME "_readpage",
3928 procfs_entry, target_print_req,"mdt_rdpg");
3930 if (m->mdt_readpage_service == NULL) {
3931 CERROR("failed to start readpage service\n");
3932 GOTO(err_mdt_svc, rc = -ENOMEM);
3935 rc = ptlrpc_start_threads(m->mdt_readpage_service);
3938 * setattr service configuration.
3940 conf = (typeof(conf)) {
3941 .psc_nbufs = MDS_NBUFS,
3942 .psc_bufsize = MDS_BUFSIZE,
3943 .psc_max_req_size = MDS_MAXREQSIZE,
3944 .psc_max_reply_size = MDS_MAXREPSIZE,
3945 .psc_req_portal = MDS_SETATTR_PORTAL,
3946 .psc_rep_portal = MDC_REPLY_PORTAL,
3947 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3948 .psc_min_threads = mdt_min_threads,
3949 .psc_max_threads = mdt_max_threads,
3950 .psc_ctx_tags = LCT_MD_THREAD
3953 m->mdt_setattr_service =
3954 ptlrpc_init_svc_conf(&conf, mdt_regular_handle,
3955 LUSTRE_MDT_NAME "_setattr",
3956 procfs_entry, target_print_req,"mdt_attr");
3958 if (!m->mdt_setattr_service) {
3959 CERROR("failed to start setattr service\n");
3960 GOTO(err_mdt_svc, rc = -ENOMEM);
3963 rc = ptlrpc_start_threads(m->mdt_setattr_service);
3965 GOTO(err_mdt_svc, rc);
3968 * sequence controller service configuration
3970 conf = (typeof(conf)) {
3971 .psc_nbufs = MDS_NBUFS,
3972 .psc_bufsize = MDS_BUFSIZE,
3973 .psc_max_req_size = SEQ_MAXREQSIZE,
3974 .psc_max_reply_size = SEQ_MAXREPSIZE,
3975 .psc_req_portal = SEQ_CONTROLLER_PORTAL,
3976 .psc_rep_portal = MDC_REPLY_PORTAL,
3977 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3978 .psc_min_threads = mdt_min_threads,
3979 .psc_max_threads = mdt_max_threads,
3980 .psc_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
3983 m->mdt_mdsc_service =
3984 ptlrpc_init_svc_conf(&conf, mdt_mdsc_handle,
3985 LUSTRE_MDT_NAME"_mdsc",
3986 procfs_entry, target_print_req,"mdt_mdsc");
3987 if (!m->mdt_mdsc_service) {
3988 CERROR("failed to start seq controller service\n");
3989 GOTO(err_mdt_svc, rc = -ENOMEM);
3992 rc = ptlrpc_start_threads(m->mdt_mdsc_service);
3994 GOTO(err_mdt_svc, rc);
3997 * metadata sequence server service configuration
3999 conf = (typeof(conf)) {
4000 .psc_nbufs = MDS_NBUFS,
4001 .psc_bufsize = MDS_BUFSIZE,
4002 .psc_max_req_size = SEQ_MAXREQSIZE,
4003 .psc_max_reply_size = SEQ_MAXREPSIZE,
4004 .psc_req_portal = SEQ_METADATA_PORTAL,
4005 .psc_rep_portal = MDC_REPLY_PORTAL,
4006 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4007 .psc_min_threads = mdt_min_threads,
4008 .psc_max_threads = mdt_max_threads,
4009 .psc_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
4012 m->mdt_mdss_service =
4013 ptlrpc_init_svc_conf(&conf, mdt_mdss_handle,
4014 LUSTRE_MDT_NAME"_mdss",
4015 procfs_entry, target_print_req,"mdt_mdss");
4016 if (!m->mdt_mdss_service) {
4017 CERROR("failed to start metadata seq server service\n");
4018 GOTO(err_mdt_svc, rc = -ENOMEM);
4021 rc = ptlrpc_start_threads(m->mdt_mdss_service);
4023 GOTO(err_mdt_svc, rc);
4027 * Data sequence server service configuration. We want to have really
4028 * cluster-wide sequences space. This is why we start only one sequence
4029 * controller which manages space.
4031 conf = (typeof(conf)) {
4032 .psc_nbufs = MDS_NBUFS,
4033 .psc_bufsize = MDS_BUFSIZE,
4034 .psc_max_req_size = SEQ_MAXREQSIZE,
4035 .psc_max_reply_size = SEQ_MAXREPSIZE,
4036 .psc_req_portal = SEQ_DATA_PORTAL,
4037 .psc_rep_portal = OSC_REPLY_PORTAL,
4038 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4039 .psc_min_threads = mdt_min_threads,
4040 .psc_max_threads = mdt_max_threads,
4041 .psc_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
4044 m->mdt_dtss_service =
4045 ptlrpc_init_svc_conf(&conf, mdt_dtss_handle,
4046 LUSTRE_MDT_NAME"_dtss",
4047 procfs_entry, target_print_req,"mdt_dtss");
4048 if (!m->mdt_dtss_service) {
4049 CERROR("failed to start data seq server service\n");
4050 GOTO(err_mdt_svc, rc = -ENOMEM);
4053 rc = ptlrpc_start_threads(m->mdt_dtss_service);
4055 GOTO(err_mdt_svc, rc);
4057 /* FLD service start */
4058 conf = (typeof(conf)) {
4059 .psc_nbufs = MDS_NBUFS,
4060 .psc_bufsize = MDS_BUFSIZE,
4061 .psc_max_req_size = FLD_MAXREQSIZE,
4062 .psc_max_reply_size = FLD_MAXREPSIZE,
4063 .psc_req_portal = FLD_REQUEST_PORTAL,
4064 .psc_rep_portal = MDC_REPLY_PORTAL,
4065 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4066 .psc_min_threads = mdt_min_threads,
4067 .psc_max_threads = mdt_max_threads,
4068 .psc_ctx_tags = LCT_DT_THREAD|LCT_MD_THREAD
4071 m->mdt_fld_service =
4072 ptlrpc_init_svc_conf(&conf, mdt_fld_handle,
4073 LUSTRE_MDT_NAME"_fld",
4074 procfs_entry, target_print_req, "mdt_fld");
4075 if (!m->mdt_fld_service) {
4076 CERROR("failed to start fld service\n");
4077 GOTO(err_mdt_svc, rc = -ENOMEM);
4080 rc = ptlrpc_start_threads(m->mdt_fld_service);
4082 GOTO(err_mdt_svc, rc);
4085 * mds-mds service configuration. Separate portal is used to allow
4086 * mds-mds requests be not blocked during recovery.
4088 conf = (typeof(conf)) {
4089 .psc_nbufs = MDS_NBUFS,
4090 .psc_bufsize = MDS_BUFSIZE,
4091 .psc_max_req_size = MDS_MAXREQSIZE,
4092 .psc_max_reply_size = MDS_MAXREPSIZE,
4093 .psc_req_portal = MDS_MDS_PORTAL,
4094 .psc_rep_portal = MDC_REPLY_PORTAL,
4095 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4096 .psc_min_threads = mdt_min_threads,
4097 .psc_max_threads = mdt_max_threads,
4098 .psc_ctx_tags = LCT_MD_THREAD
4100 m->mdt_xmds_service =
4101 ptlrpc_init_svc_conf(&conf, mdt_xmds_handle,
4102 LUSTRE_MDT_NAME "_mds",
4103 procfs_entry, target_print_req,"mdt_xmds");
4105 if (m->mdt_xmds_service == NULL) {
4106 CERROR("failed to start xmds service\n");
4107 GOTO(err_mdt_svc, rc = -ENOMEM);
4110 rc = ptlrpc_start_threads(m->mdt_xmds_service);
4112 GOTO(err_mdt_svc, rc);
4117 mdt_stop_ptlrpc_service(m);
4122 static void mdt_stack_fini(const struct lu_env *env,
4123 struct mdt_device *m, struct lu_device *top)
4125 struct obd_device *obd = mdt2obd_dev(m);
4126 struct lustre_cfg_bufs *bufs;
4127 struct lustre_cfg *lcfg;
4128 struct mdt_thread_info *info;
4132 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4133 LASSERT(info != NULL);
4135 bufs = &info->mti_u.bufs;
4136 /* process cleanup, pass mdt obd name to get obd umount flags */
4137 lustre_cfg_bufs_reset(bufs, obd->obd_name);
4142 lustre_cfg_bufs_set_string(bufs, 1, flags);
4143 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
4145 CERROR("Cannot alloc lcfg!\n");
4150 top->ld_ops->ldo_process_config(env, top, lcfg);
4151 lustre_cfg_free(lcfg);
4153 lu_stack_fini(env, top);
4154 m->mdt_child = NULL;
4155 m->mdt_bottom = NULL;
4158 static struct lu_device *mdt_layer_setup(struct lu_env *env,
4159 const char *typename,
4160 struct lu_device *child,
4161 struct lustre_cfg *cfg)
4163 const char *dev = lustre_cfg_string(cfg, 0);
4164 struct obd_type *type;
4165 struct lu_device_type *ldt;
4166 struct lu_device *d;
4171 type = class_get_type(typename);
4173 CERROR("Unknown type: '%s'\n", typename);
4174 GOTO(out, rc = -ENODEV);
4177 rc = lu_env_refill((struct lu_env *)env);
4179 CERROR("Failure to refill session: '%d'\n", rc);
4185 CERROR("type: '%s'\n", typename);
4186 GOTO(out_type, rc = -EINVAL);
4189 ldt->ldt_obd_type = type;
4190 d = ldt->ldt_ops->ldto_device_alloc(env, ldt, cfg);
4192 CERROR("Cannot allocate device: '%s'\n", typename);
4193 GOTO(out_type, rc = -ENODEV);
4196 LASSERT(child->ld_site);
4197 d->ld_site = child->ld_site;
4200 rc = ldt->ldt_ops->ldto_device_init(env, d, dev, child);
4202 CERROR("can't init device '%s', rc %d\n", typename, rc);
4203 GOTO(out_alloc, rc);
4206 lu_ref_add(&d->ld_reference, "lu-stack", &lu_site_init);
4211 ldt->ldt_ops->ldto_device_free(env, d);
4214 class_put_type(type);
4219 static int mdt_stack_init(struct lu_env *env,
4220 struct mdt_device *m,
4221 struct lustre_cfg *cfg,
4222 struct lustre_mount_info *lmi)
4224 struct lu_device *d = &m->mdt_md_dev.md_lu_dev;
4225 struct lu_device *tmp;
4226 struct md_device *md;
4227 struct lu_device *child_lu_dev;
4231 /* init the stack */
4232 tmp = mdt_layer_setup(env, LUSTRE_OSD_NAME, d, cfg);
4234 RETURN(PTR_ERR(tmp));
4236 m->mdt_bottom = lu2dt_dev(tmp);
4238 tmp = mdt_layer_setup(env, LUSTRE_MDD_NAME, d, cfg);
4240 GOTO(out, rc = PTR_ERR(tmp));
4245 tmp = mdt_layer_setup(env, LUSTRE_CMM_NAME, d, cfg);
4247 GOTO(out, rc = PTR_ERR(tmp));
4250 /*set mdd upcall device*/
4251 md_upcall_dev_set(md, lu2md_dev(d));
4254 /*set cmm upcall device*/
4255 md_upcall_dev_set(md, &m->mdt_md_dev);
4257 m->mdt_child = lu2md_dev(d);
4259 /* process setup config */
4260 tmp = &m->mdt_md_dev.md_lu_dev;
4261 rc = tmp->ld_ops->ldo_process_config(env, tmp, cfg);
4265 /* initialize local objects */
4266 child_lu_dev = &m->mdt_child->md_lu_dev;
4268 rc = child_lu_dev->ld_ops->ldo_prepare(env,
4269 &m->mdt_md_dev.md_lu_dev,
4272 /* fini from last known good lu_device */
4274 mdt_stack_fini(env, m, d);
4280 * setup CONFIG_ORIG context, used to access local config log.
4281 * this may need to be rewrite as part of llog rewrite for lu-api.
4283 static int mdt_obd_llog_setup(struct obd_device *obd,
4284 struct lustre_sb_info *lsi)
4288 LASSERT(obd->obd_fsops == NULL);
4290 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
4291 if (IS_ERR(obd->obd_fsops))
4292 return PTR_ERR(obd->obd_fsops);
4294 rc = fsfilt_setup(obd, lsi->lsi_srv_mnt->mnt_sb);
4296 fsfilt_put_ops(obd->obd_fsops);
4300 OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
4301 obd->obd_lvfs_ctxt.pwdmnt = lsi->lsi_srv_mnt;
4302 obd->obd_lvfs_ctxt.pwd = lsi->lsi_srv_mnt->mnt_root;
4303 obd->obd_lvfs_ctxt.fs = get_ds();
4305 rc = llog_setup(obd, &obd->obd_olg, LLOG_CONFIG_ORIG_CTXT, obd,
4306 0, NULL, &llog_lvfs_ops);
4308 CERROR("llog_setup() failed: %d\n", rc);
4309 fsfilt_put_ops(obd->obd_fsops);
4315 static void mdt_obd_llog_cleanup(struct obd_device *obd)
4317 struct llog_ctxt *ctxt;
4319 ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
4323 if (obd->obd_fsops) {
4324 fsfilt_put_ops(obd->obd_fsops);
4325 obd->obd_fsops = NULL;
4329 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4331 struct md_device *next = m->mdt_child;
4332 struct lu_device *d = &m->mdt_md_dev.md_lu_dev;
4333 struct lu_site *ls = d->ld_site;
4334 struct obd_device *obd = mdt2obd_dev(m);
4337 target_recovery_fini(obd);
4339 ping_evictor_stop();
4341 mdt_stop_ptlrpc_service(m);
4342 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4343 mdt_obd_llog_cleanup(obd);
4344 obd_exports_barrier(obd);
4345 obd_zombie_barrier();
4346 #ifdef HAVE_QUOTA_SUPPORT
4347 next->md_ops->mdo_quota.mqo_cleanup(env, next);
4349 lut_fini(env, &m->mdt_lut);
4350 mdt_fs_cleanup(env, m);
4351 upcall_cache_cleanup(m->mdt_identity_cache);
4352 m->mdt_identity_cache = NULL;
4354 if (m->mdt_namespace != NULL) {
4355 ldlm_namespace_free(m->mdt_namespace, NULL,
4356 d->ld_obd->obd_force);
4357 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
4360 cfs_free_nidlist(&m->mdt_nosquash_nids);
4361 if (m->mdt_nosquash_str) {
4362 OBD_FREE(m->mdt_nosquash_str, m->mdt_nosquash_strlen);
4363 m->mdt_nosquash_str = NULL;
4364 m->mdt_nosquash_strlen = 0;
4367 mdt_seq_fini(env, m);
4368 mdt_seq_fini_cli(m);
4369 mdt_fld_fini(env, m);
4370 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
4372 next->md_ops->mdo_init_capa_ctxt(env, next, 0, 0, 0, NULL);
4373 cfs_timer_disarm(&m->mdt_ck_timer);
4374 mdt_ck_thread_stop(m);
4379 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4381 lprocfs_free_per_client_stats(obd);
4382 lprocfs_free_obd_stats(obd);
4386 struct md_site *mite;
4389 mite = lu_site2md(ls);
4393 LASSERT(cfs_atomic_read(&d->ld_ref) == 0);
4398 static int mdt_adapt_sptlrpc_conf(struct obd_device *obd, int initial)
4400 struct mdt_device *m = mdt_dev(obd->obd_lu_dev);
4401 struct sptlrpc_rule_set tmp_rset;
4404 sptlrpc_rule_set_init(&tmp_rset);
4405 rc = sptlrpc_conf_target_get_rules(obd, &tmp_rset, initial);
4407 CERROR("mdt %s: failed get sptlrpc rules: %d\n",
4412 sptlrpc_target_update_exp_flavor(obd, &tmp_rset);
4414 cfs_write_lock(&m->mdt_sptlrpc_lock);
4415 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
4416 m->mdt_sptlrpc_rset = tmp_rset;
4417 cfs_write_unlock(&m->mdt_sptlrpc_lock);
4422 static void fsoptions_to_mdt_flags(struct mdt_device *m, char *options)
4426 m->mdt_opts.mo_mds_capa = 1;
4427 m->mdt_opts.mo_oss_capa = 1;
4428 #ifdef CONFIG_FS_POSIX_ACL
4429 /* ACLs should be enabled by default (b=13829) */
4430 m->mdt_opts.mo_acl = 1;
4431 LCONSOLE_INFO("Enabling ACL\n");
4433 m->mdt_opts.mo_acl = 0;
4434 LCONSOLE_INFO("Disabling ACL\n");
4443 while (*p && *p != ',')
4447 if ((len == sizeof("user_xattr") - 1) &&
4448 (memcmp(options, "user_xattr", len) == 0)) {
4449 m->mdt_opts.mo_user_xattr = 1;
4450 LCONSOLE_INFO("Enabling user_xattr\n");
4451 } else if ((len == sizeof("nouser_xattr") - 1) &&
4452 (memcmp(options, "nouser_xattr", len) == 0)) {
4453 m->mdt_opts.mo_user_xattr = 0;
4454 LCONSOLE_INFO("Disabling user_xattr\n");
4455 } else if ((len == sizeof("noacl") - 1) &&
4456 (memcmp(options, "noacl", len) == 0)) {
4457 m->mdt_opts.mo_acl = 0;
4458 LCONSOLE_INFO("Disabling ACL\n");
4468 int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4470 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4471 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4473 struct mdt_thread_info *info;
4474 struct obd_device *obd;
4475 const char *dev = lustre_cfg_string(cfg, 0);
4476 const char *num = lustre_cfg_string(cfg, 2);
4477 struct lustre_mount_info *lmi = NULL;
4478 struct lustre_sb_info *lsi;
4479 struct lustre_disk_data *ldd;
4481 struct md_site *mite;
4482 const char *identity_upcall = "NONE";
4483 #ifdef HAVE_QUOTA_SUPPORT
4484 struct md_device *next;
4490 md_device_init(&m->mdt_md_dev, ldt);
4492 * Environment (env) might be missing mdt_thread_key values at that
4493 * point, if device is allocated when mdt_thread_key is in QUIESCENT
4496 * Usually device allocation path doesn't use module key values, but
4497 * mdt has to do a lot of work here, so allocate key value.
4499 rc = lu_env_refill((struct lu_env *)env);
4503 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4504 LASSERT(info != NULL);
4506 obd = class_name2obd(dev);
4507 LASSERT(obd != NULL);
4509 m->mdt_max_mdsize = MAX_MD_SIZE;
4510 m->mdt_max_cookiesize = sizeof(struct llog_cookie);
4511 m->mdt_som_conf = 0;
4513 m->mdt_opts.mo_user_xattr = 0;
4514 m->mdt_opts.mo_acl = 0;
4515 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
4516 lmi = server_get_mount_2(dev);
4518 CERROR("Cannot get mount info for %s!\n", dev);
4521 lsi = s2lsi(lmi->lmi_sb);
4522 fsoptions_to_mdt_flags(m, lsi->lsi_lmd->lmd_opts);
4523 /* CMD is supported only in IAM mode */
4526 node_id = simple_strtol(num, NULL, 10);
4527 if (!(ldd->ldd_flags & LDD_F_IAM_DIR) && node_id) {
4528 CERROR("CMD Operation not allowed in IOP mode\n");
4529 GOTO(err_lmi, rc = -EINVAL);
4531 /* Read recovery timeouts */
4532 if (lsi->lsi_lmd && lsi->lsi_lmd->lmd_recovery_time_soft)
4533 obd->obd_recovery_timeout =
4534 lsi->lsi_lmd->lmd_recovery_time_soft;
4536 if (lsi->lsi_lmd && lsi->lsi_lmd->lmd_recovery_time_hard)
4537 obd->obd_recovery_time_hard =
4538 lsi->lsi_lmd->lmd_recovery_time_hard;
4541 cfs_rwlock_init(&m->mdt_sptlrpc_lock);
4542 sptlrpc_rule_set_init(&m->mdt_sptlrpc_rset);
4544 cfs_spin_lock_init(&m->mdt_ioepoch_lock);
4545 m->mdt_opts.mo_compat_resname = 0;
4546 m->mdt_capa_timeout = CAPA_TIMEOUT;
4547 m->mdt_capa_alg = CAPA_HMAC_ALG_SHA1;
4548 m->mdt_ck_timeout = CAPA_KEY_TIMEOUT;
4549 m->mdt_squash_uid = 0;
4550 m->mdt_squash_gid = 0;
4551 CFS_INIT_LIST_HEAD(&m->mdt_nosquash_nids);
4552 m->mdt_nosquash_str = NULL;
4553 m->mdt_nosquash_strlen = 0;
4554 cfs_init_rwsem(&m->mdt_squash_sem);
4556 OBD_ALLOC_PTR(mite);
4558 GOTO(err_lmi, rc = -ENOMEM);
4562 m->mdt_md_dev.md_lu_dev.ld_ops = &mdt_lu_ops;
4563 m->mdt_md_dev.md_lu_dev.ld_obd = obd;
4564 /* set this lu_device to obd, because error handling need it */
4565 obd->obd_lu_dev = &m->mdt_md_dev.md_lu_dev;
4567 rc = lu_site_init(s, &m->mdt_md_dev.md_lu_dev);
4569 CERROR("Can't init lu_site, rc %d\n", rc);
4570 GOTO(err_free_site, rc);
4573 rc = mdt_procfs_init(m, dev);
4575 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
4576 GOTO(err_fini_proc, rc);
4579 /* set server index */
4580 lu_site2md(s)->ms_node_id = node_id;
4582 /* failover is the default
4583 * FIXME: we do not failout mds0/mgs, which may cause some problems.
4584 * assumed whose ms_node_id == 0 XXX
4586 obd->obd_replayable = 1;
4587 /* No connection accepted until configurations will finish */
4588 obd->obd_no_conn = 1;
4590 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
4591 char *str = lustre_cfg_string(cfg, 4);
4592 if (strchr(str, 'n')) {
4593 CWARN("%s: recovery disabled\n", obd->obd_name);
4594 obd->obd_replayable = 0;
4598 /* init the stack */
4599 rc = mdt_stack_init((struct lu_env *)env, m, cfg, lmi);
4601 CERROR("Can't init device stack, rc %d\n", rc);
4602 GOTO(err_fini_proc, rc);
4605 rc = lut_init(env, &m->mdt_lut, obd, m->mdt_bottom);
4607 GOTO(err_fini_stack, rc);
4609 rc = mdt_fld_init(env, obd->obd_name, m);
4613 rc = mdt_seq_init(env, obd->obd_name, m);
4615 GOTO(err_fini_fld, rc);
4617 snprintf(info->mti_u.ns_name, sizeof info->mti_u.ns_name,
4618 LUSTRE_MDT_NAME"-%p", m);
4619 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
4620 LDLM_NAMESPACE_SERVER,
4621 LDLM_NAMESPACE_GREEDY,
4623 if (m->mdt_namespace == NULL)
4624 GOTO(err_fini_seq, rc = -ENOMEM);
4626 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
4627 /* set obd_namespace for compatibility with old code */
4628 obd->obd_namespace = m->mdt_namespace;
4630 /* XXX: to support suppgid for ACL, we enable identity_upcall
4631 * by default, otherwise, maybe got unexpected -EACCESS. */
4632 if (m->mdt_opts.mo_acl)
4633 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
4635 m->mdt_identity_cache = upcall_cache_init(obd->obd_name, identity_upcall,
4636 &mdt_identity_upcall_cache_ops);
4637 if (IS_ERR(m->mdt_identity_cache)) {
4638 rc = PTR_ERR(m->mdt_identity_cache);
4639 m->mdt_identity_cache = NULL;
4640 GOTO(err_free_ns, rc);
4643 cfs_timer_init(&m->mdt_ck_timer, mdt_ck_timer_callback, m);
4645 rc = mdt_ck_thread_start(m);
4647 GOTO(err_free_ns, rc);
4649 rc = mdt_fs_setup(env, m, obd, lsi);
4653 rc = mdt_obd_llog_setup(obd, lsi);
4655 GOTO(err_fs_cleanup, rc);
4657 rc = mdt_llog_ctxt_clone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4659 GOTO(err_llog_cleanup, rc);
4661 mdt_adapt_sptlrpc_conf(obd, 1);
4663 #ifdef HAVE_QUOTA_SUPPORT
4664 next = m->mdt_child;
4665 rc = next->md_ops->mdo_quota.mqo_setup(env, next, lmi->lmi_mnt);
4667 GOTO(err_llog_cleanup, rc);
4670 server_put_mount_2(dev, lmi->lmi_mnt);
4673 target_recovery_init(&m->mdt_lut, mdt_recovery_handle);
4675 rc = mdt_start_ptlrpc_service(m);
4677 GOTO(err_recovery, rc);
4679 ping_evictor_start();
4681 rc = lu_site_init_finish(s);
4683 GOTO(err_stop_service, rc);
4685 if (obd->obd_recovering == 0)
4686 mdt_postrecov(env, m);
4688 mdt_init_capa_ctxt(env, m);
4690 /* Reduce the initial timeout on an MDS because it doesn't need such
4691 * a long timeout as an OST does. Adaptive timeouts will adjust this
4692 * value appropriately. */
4693 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
4694 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
4699 ping_evictor_stop();
4700 mdt_stop_ptlrpc_service(m);
4702 target_recovery_fini(obd);
4703 #ifdef HAVE_QUOTA_SUPPORT
4704 next->md_ops->mdo_quota.mqo_cleanup(env, next);
4707 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4708 mdt_obd_llog_cleanup(obd);
4710 mdt_fs_cleanup(env, m);
4712 cfs_timer_disarm(&m->mdt_ck_timer);
4713 mdt_ck_thread_stop(m);
4715 upcall_cache_cleanup(m->mdt_identity_cache);
4716 m->mdt_identity_cache = NULL;
4717 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
4718 obd->obd_namespace = m->mdt_namespace = NULL;
4720 mdt_seq_fini(env, m);
4722 mdt_fld_fini(env, m);
4724 lut_fini(env, &m->mdt_lut);
4726 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4734 server_put_mount_2(dev, lmi->lmi_mnt);
4738 /* used by MGS to process specific configurations */
4739 static int mdt_process_config(const struct lu_env *env,
4740 struct lu_device *d, struct lustre_cfg *cfg)
4742 struct mdt_device *m = mdt_dev(d);
4743 struct md_device *md_next = m->mdt_child;
4744 struct lu_device *next = md2lu_dev(md_next);
4748 switch (cfg->lcfg_command) {
4750 struct lprocfs_static_vars lvars;
4751 struct obd_device *obd = d->ld_obd;
4754 * For interoperability between 1.8 and 2.0,
4755 * skip old "mdt.group_upcall" param.
4758 char *param = lustre_cfg_string(cfg, 1);
4759 if (param && !strncmp("mdt.group_upcall", param, 16)) {
4760 CWARN("For 1.8 interoperability, skip this"
4761 " mdt.group_upcall. It is obsolete\n");
4766 lprocfs_mdt_init_vars(&lvars);
4767 rc = class_process_proc_param(PARAM_MDT, lvars.obd_vars,
4769 if (rc > 0 || rc == -ENOSYS)
4770 /* we don't understand; pass it on */
4771 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4776 * Add mdc hook to get first MDT uuid and connect it to
4777 * ls->controller to use for seq manager.
4779 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4781 CERROR("Can't add mdc, rc %d\n", rc);
4783 rc = mdt_seq_init_cli(env, mdt_dev(d), cfg);
4786 /* others are passed further */
4787 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4793 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
4794 const struct lu_object_header *hdr,
4795 struct lu_device *d)
4797 struct mdt_object *mo;
4803 struct lu_object *o;
4804 struct lu_object_header *h;
4806 o = &mo->mot_obj.mo_lu;
4807 h = &mo->mot_header;
4808 lu_object_header_init(h);
4809 lu_object_init(o, h, d);
4810 lu_object_add_top(h, o);
4811 o->lo_ops = &mdt_obj_ops;
4812 cfs_sema_init(&mo->mot_ioepoch_sem, 1);
4818 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
4819 const struct lu_object_conf *unused)
4821 struct mdt_device *d = mdt_dev(o->lo_dev);
4822 struct lu_device *under;
4823 struct lu_object *below;
4827 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
4828 PFID(lu_object_fid(o)));
4830 under = &d->mdt_child->md_lu_dev;
4831 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
4832 if (below != NULL) {
4833 lu_object_add(o, below);
4840 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
4842 struct mdt_object *mo = mdt_obj(o);
4843 struct lu_object_header *h;
4847 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
4848 PFID(lu_object_fid(o)));
4851 lu_object_header_fini(h);
4856 static int mdt_object_print(const struct lu_env *env, void *cookie,
4857 lu_printer_t p, const struct lu_object *o)
4859 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
4860 return (*p)(env, cookie, LUSTRE_MDT_NAME"-object@%p(ioepoch="LPU64" "
4861 "flags="LPX64", epochcount=%d, writecount=%d)",
4862 mdto, mdto->mot_ioepoch, mdto->mot_flags,
4863 mdto->mot_ioepoch_count, mdto->mot_writecount);
4866 static const struct lu_device_operations mdt_lu_ops = {
4867 .ldo_object_alloc = mdt_object_alloc,
4868 .ldo_process_config = mdt_process_config,
4871 static const struct lu_object_operations mdt_obj_ops = {
4872 .loo_object_init = mdt_object_init,
4873 .loo_object_free = mdt_object_free,
4874 .loo_object_print = mdt_object_print
4877 static int mdt_obd_set_info_async(struct obd_export *exp,
4878 __u32 keylen, void *key,
4879 __u32 vallen, void *val,
4880 struct ptlrpc_request_set *set)
4882 struct obd_device *obd = exp->exp_obd;
4888 if (KEY_IS(KEY_SPTLRPC_CONF)) {
4889 rc = mdt_adapt_sptlrpc_conf(obd, 0);
4896 /* mds_connect_internal */
4897 static int mdt_connect_internal(struct obd_export *exp,
4898 struct mdt_device *mdt,
4899 struct obd_connect_data *data)
4902 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
4903 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
4905 /* If no known bits (which should not happen, probably,
4906 as everybody should support LOOKUP and UPDATE bits at least)
4907 revert to compat mode with plain locks. */
4908 if (!data->ocd_ibits_known &&
4909 data->ocd_connect_flags & OBD_CONNECT_IBITS)
4910 data->ocd_connect_flags &= ~OBD_CONNECT_IBITS;
4912 if (!mdt->mdt_opts.mo_acl)
4913 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
4915 if (!mdt->mdt_opts.mo_user_xattr)
4916 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
4918 if (!mdt->mdt_som_conf)
4919 data->ocd_connect_flags &= ~OBD_CONNECT_SOM;
4921 cfs_spin_lock(&exp->exp_lock);
4922 exp->exp_connect_flags = data->ocd_connect_flags;
4923 cfs_spin_unlock(&exp->exp_lock);
4924 data->ocd_version = LUSTRE_VERSION_CODE;
4925 exp->exp_mdt_data.med_ibits_known = data->ocd_ibits_known;
4929 if (mdt->mdt_opts.mo_acl &&
4930 ((exp->exp_connect_flags & OBD_CONNECT_ACL) == 0)) {
4931 CWARN("%s: MDS requires ACL support but client does not\n",
4932 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4937 if ((exp->exp_connect_flags & OBD_CONNECT_FID) == 0) {
4938 CWARN("%s: MDS requires FID support, but client not\n",
4939 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4943 if (mdt->mdt_som_conf && !exp_connect_som(exp) &&
4944 !(exp->exp_connect_flags & OBD_CONNECT_MDS_MDS)) {
4945 CWARN("%s: MDS has SOM enabled, but client does not support "
4946 "it\n", mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4953 static int mdt_connect_check_sptlrpc(struct mdt_device *mdt,
4954 struct obd_export *exp,
4955 struct ptlrpc_request *req)
4957 struct sptlrpc_flavor flvr;
4960 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
4961 cfs_read_lock(&mdt->mdt_sptlrpc_lock);
4962 sptlrpc_target_choose_flavor(&mdt->mdt_sptlrpc_rset,
4966 cfs_read_unlock(&mdt->mdt_sptlrpc_lock);
4968 cfs_spin_lock(&exp->exp_lock);
4970 exp->exp_sp_peer = req->rq_sp_from;
4971 exp->exp_flvr = flvr;
4973 if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
4974 exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
4975 CERROR("unauthorized rpc flavor %x from %s, "
4976 "expect %x\n", req->rq_flvr.sf_rpc,
4977 libcfs_nid2str(req->rq_peer.nid),
4978 exp->exp_flvr.sf_rpc);
4982 cfs_spin_unlock(&exp->exp_lock);
4984 if (exp->exp_sp_peer != req->rq_sp_from) {
4985 CERROR("RPC source %s doesn't match %s\n",
4986 sptlrpc_part2name(req->rq_sp_from),
4987 sptlrpc_part2name(exp->exp_sp_peer));
4990 rc = sptlrpc_target_export_check(exp, req);
4997 /* mds_connect copy */
4998 static int mdt_obd_connect(const struct lu_env *env,
4999 struct obd_export **exp, struct obd_device *obd,
5000 struct obd_uuid *cluuid,
5001 struct obd_connect_data *data,
5004 struct mdt_thread_info *info;
5005 struct obd_export *lexp;
5006 struct lustre_handle conn = { 0 };
5007 struct mdt_device *mdt;
5008 struct ptlrpc_request *req;
5012 LASSERT(env != NULL);
5013 if (!exp || !obd || !cluuid)
5016 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5017 req = info->mti_pill->rc_req;
5018 mdt = mdt_dev(obd->obd_lu_dev);
5020 rc = class_connect(&conn, obd, cluuid);
5024 lexp = class_conn2export(&conn);
5025 LASSERT(lexp != NULL);
5027 rc = mdt_connect_check_sptlrpc(mdt, lexp, req);
5031 if (OBD_FAIL_CHECK(OBD_FAIL_TGT_RCVG_FLAG))
5032 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECOVERING);
5034 rc = mdt_connect_internal(lexp, mdt, data);
5036 struct mdt_thread_info *mti;
5037 struct lsd_client_data *lcd = lexp->exp_target_data.ted_lcd;
5039 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5040 LASSERT(mti != NULL);
5041 mti->mti_exp = lexp;
5042 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5043 rc = mdt_client_new(env, mdt);
5045 mdt_export_stats_init(obd, lexp, localdata);
5050 class_disconnect(lexp);
5059 static int mdt_obd_reconnect(const struct lu_env *env,
5060 struct obd_export *exp, struct obd_device *obd,
5061 struct obd_uuid *cluuid,
5062 struct obd_connect_data *data,
5065 struct mdt_thread_info *info;
5066 struct mdt_device *mdt;
5067 struct ptlrpc_request *req;
5071 if (exp == NULL || obd == NULL || cluuid == NULL)
5074 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5075 req = info->mti_pill->rc_req;
5076 mdt = mdt_dev(obd->obd_lu_dev);
5078 rc = mdt_connect_check_sptlrpc(mdt, exp, req);
5082 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
5084 mdt_export_stats_init(obd, exp, localdata);
5088 static int mdt_export_cleanup(struct obd_export *exp)
5090 struct mdt_export_data *med = &exp->exp_mdt_data;
5091 struct obd_device *obd = exp->exp_obd;
5092 struct mdt_device *mdt;
5093 struct mdt_thread_info *info;
5095 CFS_LIST_HEAD(closing_list);
5096 struct mdt_file_data *mfd, *n;
5100 cfs_spin_lock(&med->med_open_lock);
5101 while (!cfs_list_empty(&med->med_open_head)) {
5102 cfs_list_t *tmp = med->med_open_head.next;
5103 mfd = cfs_list_entry(tmp, struct mdt_file_data, mfd_list);
5105 /* Remove mfd handle so it can't be found again.
5106 * We are consuming the mfd_list reference here. */
5107 class_handle_unhash(&mfd->mfd_handle);
5108 cfs_list_move_tail(&mfd->mfd_list, &closing_list);
5110 cfs_spin_unlock(&med->med_open_lock);
5111 mdt = mdt_dev(obd->obd_lu_dev);
5112 LASSERT(mdt != NULL);
5114 rc = lu_env_init(&env, LCT_MD_THREAD);
5118 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5119 LASSERT(info != NULL);
5120 memset(info, 0, sizeof *info);
5121 info->mti_env = &env;
5122 info->mti_mdt = mdt;
5123 info->mti_exp = exp;
5125 if (!cfs_list_empty(&closing_list)) {
5126 struct md_attr *ma = &info->mti_attr;
5130 lmm_size = mdt->mdt_max_mdsize;
5131 OBD_ALLOC_LARGE(ma->ma_lmm, lmm_size);
5132 if (ma->ma_lmm == NULL)
5133 GOTO(out_lmm, rc = -ENOMEM);
5135 cookie_size = mdt->mdt_max_cookiesize;
5136 OBD_ALLOC_LARGE(ma->ma_cookie, cookie_size);
5137 if (ma->ma_cookie == NULL)
5138 GOTO(out_cookie, rc = -ENOMEM);
5140 /* Close any open files (which may also cause orphan unlinking). */
5141 cfs_list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
5142 cfs_list_del_init(&mfd->mfd_list);
5143 memset(&ma->ma_attr, 0, sizeof(ma->ma_attr));
5144 ma->ma_lmm_size = lmm_size;
5145 ma->ma_cookie_size = cookie_size;
5147 /* It is not for setattr, just tell MDD to send
5148 * DESTROY RPC to OSS if needed */
5149 ma->ma_valid = MA_FLAGS;
5150 ma->ma_attr_flags = MDS_CLOSE_CLEANUP;
5151 /* Don't unlink orphan on failover umount, LU-184 */
5152 if (exp->exp_flags & OBD_OPT_FAILOVER)
5153 ma->ma_attr_flags |= MDS_KEEP_ORPHAN;
5154 mdt_mfd_close(info, mfd);
5156 OBD_FREE_LARGE(ma->ma_cookie, cookie_size);
5157 ma->ma_cookie = NULL;
5159 OBD_FREE_LARGE(ma->ma_lmm, lmm_size);
5163 info->mti_mdt = NULL;
5164 /* cleanup client slot early */
5165 /* Do not erase record for recoverable client. */
5166 if (!(exp->exp_flags & OBD_OPT_FAILOVER) || exp->exp_failed)
5167 mdt_client_del(&env, mdt);
5173 static int mdt_obd_disconnect(struct obd_export *exp)
5179 class_export_get(exp);
5181 rc = server_disconnect_export(exp);
5183 CDEBUG(D_IOCTL, "server disconnect error: %d\n", rc);
5185 rc = mdt_export_cleanup(exp);
5186 class_export_put(exp);
5190 /* FIXME: Can we avoid using these two interfaces? */
5191 static int mdt_init_export(struct obd_export *exp)
5193 struct mdt_export_data *med = &exp->exp_mdt_data;
5197 CFS_INIT_LIST_HEAD(&med->med_open_head);
5198 cfs_spin_lock_init(&med->med_open_lock);
5199 cfs_sema_init(&med->med_idmap_sem, 1);
5200 med->med_idmap = NULL;
5201 cfs_spin_lock(&exp->exp_lock);
5202 exp->exp_connecting = 1;
5203 cfs_spin_unlock(&exp->exp_lock);
5204 rc = lut_client_alloc(exp);
5206 rc = ldlm_init_export(exp);
5209 CERROR("Error %d while initializing export\n", rc);
5213 static int mdt_destroy_export(struct obd_export *exp)
5215 struct mdt_export_data *med;
5219 med = &exp->exp_mdt_data;
5220 if (exp_connect_rmtclient(exp))
5221 mdt_cleanup_idmap(&exp->exp_mdt_data);
5223 target_destroy_export(exp);
5224 ldlm_destroy_export(exp);
5225 lut_client_free(exp);
5227 LASSERT(cfs_list_empty(&exp->exp_outstanding_replies));
5228 LASSERT(cfs_list_empty(&exp->exp_mdt_data.med_open_head));
5229 if (obd_uuid_equals(&exp->exp_client_uuid, &exp->exp_obd->obd_uuid))
5235 static void mdt_allow_cli(struct mdt_device *m, unsigned int flag)
5237 if (flag & CONFIG_LOG)
5238 cfs_set_bit(MDT_FL_CFGLOG, &m->mdt_state);
5240 /* also notify active event */
5241 if (flag & CONFIG_SYNC)
5242 cfs_set_bit(MDT_FL_SYNCED, &m->mdt_state);
5244 if (cfs_test_bit(MDT_FL_CFGLOG, &m->mdt_state) &&
5245 cfs_test_bit(MDT_FL_SYNCED, &m->mdt_state)) {
5246 struct obd_device *obd = m->mdt_md_dev.md_lu_dev.ld_obd;
5248 /* Open for clients */
5249 if (obd->obd_no_conn) {
5250 cfs_spin_lock(&obd->obd_dev_lock);
5251 obd->obd_no_conn = 0;
5252 cfs_spin_unlock(&obd->obd_dev_lock);
5257 static int mdt_upcall(const struct lu_env *env, struct md_device *md,
5258 enum md_upcall_event ev, void *data)
5260 struct mdt_device *m = mdt_dev(&md->md_lu_dev);
5261 struct md_device *next = m->mdt_child;
5262 struct mdt_thread_info *mti;
5268 rc = next->md_ops->mdo_maxsize_get(env, next,
5270 &m->mdt_max_cookiesize);
5271 CDEBUG(D_INFO, "get max mdsize %d max cookiesize %d\n",
5272 m->mdt_max_mdsize, m->mdt_max_cookiesize);
5273 mdt_allow_cli(m, CONFIG_SYNC);
5276 m->mdt_lut.lut_obd->u.obt.obt_mount_count;
5279 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5280 mti->mti_no_need_trans = 1;
5281 CDEBUG(D_INFO, "disable mdt trans for this thread\n");
5284 /* Check that MDT is not yet configured */
5285 LASSERT(!cfs_test_bit(MDT_FL_CFGLOG, &m->mdt_state));
5287 #ifdef HAVE_QUOTA_SUPPORT
5289 if (md->md_lu_dev.ld_obd->obd_recovering == 0 &&
5290 likely(md->md_lu_dev.ld_obd->obd_stopping == 0))
5291 next->md_ops->mdo_quota.mqo_recovery(env, next);
5295 CERROR("invalid event\n");
5302 static int mdt_obd_notify(struct obd_device *host,
5303 struct obd_device *watched,
5304 enum obd_notify_event ev, void *data)
5306 struct mdt_device *mdt = mdt_dev(host->obd_lu_dev);
5307 #ifdef HAVE_QUOTA_SUPPORT
5308 struct md_device *next = mdt->mdt_child;
5313 case OBD_NOTIFY_CONFIG:
5314 mdt_allow_cli(mdt, (unsigned long)data);
5316 #ifdef HAVE_QUOTA_SUPPORT
5317 /* quota_type has been processed, we can now handle
5318 * incoming quota requests */
5319 next->md_ops->mdo_quota.mqo_notify(NULL, next);
5323 CDEBUG(D_INFO, "Unhandled notification %#x\n", ev);
5328 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key,
5329 void *val, int vallen)
5331 struct mdt_device *mdt = mdt_dev(info->mti_exp->exp_obd->obd_lu_dev);
5332 struct getinfo_fid2path *fpout, *fpin;
5335 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
5338 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
5339 lustre_swab_fid2path(fpin);
5341 memcpy(fpout, fpin, sizeof(*fpin));
5342 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
5345 rc = mdt_fid2path(info->mti_env, mdt, fpout);
5349 static int mdt_fid2path(const struct lu_env *env, struct mdt_device *mdt,
5350 struct getinfo_fid2path *fp)
5352 struct mdt_object *obj;
5356 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
5357 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
5359 if (!fid_is_sane(&fp->gf_fid))
5362 obj = mdt_object_find(env, mdt, &fp->gf_fid);
5363 if (obj == NULL || IS_ERR(obj)) {
5364 CDEBUG(D_IOCTL, "no object "DFID": %ld\n",PFID(&fp->gf_fid),
5369 rc = lu_object_exists(&obj->mot_obj.mo_lu);
5375 mdt_object_put(env, obj);
5376 CDEBUG(D_IOCTL, "nonlocal object "DFID": %d\n",
5377 PFID(&fp->gf_fid), rc);
5381 rc = mo_path(env, md_object_next(&obj->mot_obj), fp->gf_path,
5382 fp->gf_pathlen, &fp->gf_recno, &fp->gf_linkno);
5383 mdt_object_put(env, obj);
5388 static int mdt_get_info(struct mdt_thread_info *info)
5390 struct ptlrpc_request *req = mdt_info_req(info);
5398 key = req_capsule_client_get(info->mti_pill, &RMF_GETINFO_KEY);
5400 CDEBUG(D_IOCTL, "No GETINFO key");
5403 keylen = req_capsule_get_size(info->mti_pill, &RMF_GETINFO_KEY,
5406 vallen = req_capsule_client_get(info->mti_pill, &RMF_GETINFO_VALLEN);
5407 if (vallen == NULL) {
5408 CDEBUG(D_IOCTL, "Unable to get RMF_GETINFO_VALLEN buffer");
5412 req_capsule_set_size(info->mti_pill, &RMF_GETINFO_VAL, RCL_SERVER,
5414 rc = req_capsule_server_pack(info->mti_pill);
5415 valout = req_capsule_server_get(info->mti_pill, &RMF_GETINFO_VAL);
5416 if (valout == NULL) {
5417 CDEBUG(D_IOCTL, "Unable to get get-info RPC out buffer");
5421 if (KEY_IS(KEY_FID2PATH))
5422 rc = mdt_rpc_fid2path(info, key, valout, *vallen);
5426 lustre_msg_set_status(req->rq_repmsg, rc);
5431 /* Pass the ioc down */
5432 static int mdt_ioc_child(struct lu_env *env, struct mdt_device *mdt,
5433 unsigned int cmd, int len, void *data)
5435 struct lu_context ioctl_session;
5436 struct md_device *next = mdt->mdt_child;
5440 rc = lu_context_init(&ioctl_session, LCT_SESSION);
5443 ioctl_session.lc_thread = (struct ptlrpc_thread *)cfs_current();
5444 lu_context_enter(&ioctl_session);
5445 env->le_ses = &ioctl_session;
5447 LASSERT(next->md_ops->mdo_iocontrol);
5448 rc = next->md_ops->mdo_iocontrol(env, next, cmd, len, data);
5450 lu_context_exit(&ioctl_session);
5451 lu_context_fini(&ioctl_session);
5455 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
5457 struct obd_ioctl_data *data = karg;
5458 struct lu_fid *fid = (struct lu_fid *)data->ioc_inlbuf1;
5460 struct mdt_object *obj;
5461 struct mdt_lock_handle *lh;
5464 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
5465 if (!fid_is_sane(fid))
5468 lh = &mti->mti_lh[MDT_LH_PARENT];
5469 mdt_lock_reg_init(lh, LCK_CR);
5471 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
5473 RETURN(PTR_ERR(obj));
5475 rc = mdt_object_exists(obj);
5479 * before calling version get the correct MDS should be
5480 * fid, this is error to find remote object here
5482 CERROR("nonlocal object "DFID"\n", PFID(fid));
5484 version = mo_version_get(mti->mti_env, mdt_object_child(obj));
5485 *(__u64 *)data->ioc_inlbuf2 = version;
5488 mdt_object_unlock_put(mti, obj, lh, 1);
5492 /* ioctls on obd dev */
5493 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
5494 void *karg, void *uarg)
5497 struct obd_device *obd = exp->exp_obd;
5498 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
5499 struct dt_device *dt = mdt->mdt_bottom;
5503 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
5504 rc = lu_env_init(&env, LCT_MD_THREAD);
5510 rc = mdt_device_sync(&env, mdt);
5512 case OBD_IOC_SET_READONLY:
5513 dt->dd_ops->dt_ro(&env, dt);
5515 case OBD_IOC_ABORT_RECOVERY:
5516 CERROR("Aborting recovery for device %s\n", obd->obd_name);
5517 target_stop_recovery_thread(obd);
5520 case OBD_IOC_CHANGELOG_REG:
5521 case OBD_IOC_CHANGELOG_DEREG:
5522 case OBD_IOC_CHANGELOG_CLEAR:
5523 rc = mdt_ioc_child(&env, mdt, cmd, len, karg);
5525 case OBD_IOC_GET_OBJ_VERSION: {
5526 struct mdt_thread_info *mti;
5527 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5528 memset(mti, 0, sizeof *mti);
5529 mti->mti_env = &env;
5533 rc = mdt_ioc_version_get(mti, karg);
5537 CERROR("Not supported cmd = %d for device %s\n",
5538 cmd, obd->obd_name);
5546 int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
5548 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
5549 #ifdef HAVE_QUOTA_SUPPORT
5550 struct obd_device *obd = mdt2obd_dev(mdt);
5551 struct md_device *next = mdt->mdt_child;
5556 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
5557 #ifdef HAVE_QUOTA_SUPPORT
5558 if (likely(obd->obd_stopping == 0))
5559 next->md_ops->mdo_quota.mqo_recovery(env, next);
5564 int mdt_obd_postrecov(struct obd_device *obd)
5569 rc = lu_env_init(&env, LCT_MD_THREAD);
5572 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
5578 * Send a copytool req to a client
5579 * Note this sends a request RPC from a server (MDT) to a client (MDC),
5580 * backwards of normal comms.
5582 int mdt_hsm_copytool_send(struct obd_export *exp)
5585 struct hsm_action_list *hal;
5586 struct hsm_action_item *hai;
5590 CWARN("%s: writing to mdc at %s\n", exp->exp_obd->obd_name,
5591 libcfs_nid2str(exp->exp_connection->c_peer.nid));
5593 len = sizeof(*lh) + sizeof(*hal) + MTI_NAME_MAXLEN +
5594 /* for mockup below */ 2 * cfs_size_round(sizeof(*hai));
5599 lh->kuc_magic = KUC_MAGIC;
5600 lh->kuc_transport = KUC_TRANSPORT_HSM;
5601 lh->kuc_msgtype = HMT_ACTION_LIST;
5602 lh->kuc_msglen = len;
5604 hal = (struct hsm_action_list *)(lh + 1);
5605 hal->hal_version = HAL_VERSION;
5606 hal->hal_archive_num = 1;
5607 obd_uuid2fsname(hal->hal_fsname, exp->exp_obd->obd_name,
5610 /* mock up an action list */
5612 hai = hai_zero(hal);
5613 hai->hai_action = HSMA_ARCHIVE;
5614 hai->hai_fid.f_oid = 0xA00A;
5615 hai->hai_len = sizeof(*hai);
5616 hai = hai_next(hai);
5617 hai->hai_action = HSMA_RESTORE;
5618 hai->hai_fid.f_oid = 0xB00B;
5619 hai->hai_len = sizeof(*hai);
5621 /* Uses the ldlm reverse import; this rpc will be seen by
5622 the ldlm_callback_handler */
5623 rc = do_set_info_async(exp->exp_imp_reverse,
5624 LDLM_SET_INFO, LUSTRE_OBD_VERSION,
5625 sizeof(KEY_HSM_COPYTOOL_SEND),
5626 KEY_HSM_COPYTOOL_SEND,
5634 static struct obd_ops mdt_obd_device_ops = {
5635 .o_owner = THIS_MODULE,
5636 .o_set_info_async = mdt_obd_set_info_async,
5637 .o_connect = mdt_obd_connect,
5638 .o_reconnect = mdt_obd_reconnect,
5639 .o_disconnect = mdt_obd_disconnect,
5640 .o_init_export = mdt_init_export,
5641 .o_destroy_export = mdt_destroy_export,
5642 .o_iocontrol = mdt_iocontrol,
5643 .o_postrecov = mdt_obd_postrecov,
5644 .o_notify = mdt_obd_notify
5647 static struct lu_device* mdt_device_fini(const struct lu_env *env,
5648 struct lu_device *d)
5650 struct mdt_device *m = mdt_dev(d);
5657 static struct lu_device *mdt_device_free(const struct lu_env *env,
5658 struct lu_device *d)
5660 struct mdt_device *m = mdt_dev(d);
5663 md_device_fini(&m->mdt_md_dev);
5668 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
5669 struct lu_device_type *t,
5670 struct lustre_cfg *cfg)
5672 struct lu_device *l;
5673 struct mdt_device *m;
5679 l = &m->mdt_md_dev.md_lu_dev;
5680 rc = mdt_init0(env, m, t, cfg);
5682 mdt_device_free(env, l);
5686 md_upcall_init(&m->mdt_md_dev, mdt_upcall);
5688 l = ERR_PTR(-ENOMEM);
5692 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
5693 LU_KEY_INIT_FINI(mdt, struct mdt_thread_info);
5695 /* context key: mdt_thread_key */
5696 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
5698 /* context key constructor/destructor: mdt_txn_key_init, mdt_txn_key_fini */
5699 LU_KEY_INIT_FINI(mdt_txn, struct mdt_txn_info);
5701 struct lu_context_key mdt_txn_key = {
5702 .lct_tags = LCT_TX_HANDLE,
5703 .lct_init = mdt_txn_key_init,
5704 .lct_fini = mdt_txn_key_fini
5707 struct md_ucred *mdt_ucred(const struct mdt_thread_info *info)
5709 return md_ucred(info->mti_env);
5713 * Enable/disable COS (Commit On Sharing).
5715 * Set/Clear the COS flag in mdt options.
5717 * \param mdt mdt device
5718 * \param val 0 disables COS, other values enable COS
5720 void mdt_enable_cos(struct mdt_device *mdt, int val)
5725 mdt->mdt_opts.mo_cos = !!val;
5726 rc = lu_env_init(&env, LCT_MD_THREAD);
5727 if (unlikely(rc != 0)) {
5728 CWARN("lu_env initialization failed with rc = %d,"
5729 "cannot sync\n", rc);
5732 mdt_device_sync(&env, mdt);
5737 * Check COS (Commit On Sharing) status.
5739 * Return COS flag status.
5741 * \param mdt mdt device
5743 int mdt_cos_is_enabled(struct mdt_device *mdt)
5745 return mdt->mdt_opts.mo_cos != 0;
5748 /* type constructor/destructor: mdt_type_init, mdt_type_fini */
5749 LU_TYPE_INIT_FINI(mdt, &mdt_thread_key, &mdt_txn_key);
5751 static struct lu_device_type_operations mdt_device_type_ops = {
5752 .ldto_init = mdt_type_init,
5753 .ldto_fini = mdt_type_fini,
5755 .ldto_start = mdt_type_start,
5756 .ldto_stop = mdt_type_stop,
5758 .ldto_device_alloc = mdt_device_alloc,
5759 .ldto_device_free = mdt_device_free,
5760 .ldto_device_fini = mdt_device_fini
5763 static struct lu_device_type mdt_device_type = {
5764 .ldt_tags = LU_DEVICE_MD,
5765 .ldt_name = LUSTRE_MDT_NAME,
5766 .ldt_ops = &mdt_device_type_ops,
5767 .ldt_ctx_tags = LCT_MD_THREAD
5770 static struct lu_local_obj_desc mdt_last_recv = {
5771 .llod_name = LAST_RCVD,
5772 .llod_oid = MDT_LAST_RECV_OID,
5776 static int __init mdt_mod_init(void)
5778 struct lprocfs_static_vars lvars;
5781 llo_local_obj_register(&mdt_last_recv);
5783 if (mdt_num_threads > 0) {
5784 if (mdt_num_threads > MDT_MAX_THREADS)
5785 mdt_num_threads = MDT_MAX_THREADS;
5786 if (mdt_num_threads < MDT_MIN_THREADS)
5787 mdt_num_threads = MDT_MIN_THREADS;
5788 mdt_max_threads = mdt_min_threads = mdt_num_threads;
5790 mdt_max_threads = MDT_MAX_THREADS;
5791 mdt_min_threads = MDT_MIN_THREADS;
5794 lprocfs_mdt_init_vars(&lvars);
5795 rc = class_register_type(&mdt_obd_device_ops, NULL,
5796 lvars.module_vars, LUSTRE_MDT_NAME,
5802 static void __exit mdt_mod_exit(void)
5804 llo_local_obj_unregister(&mdt_last_recv);
5805 class_unregister_type(LUSTRE_MDT_NAME);
5809 #define DEF_HNDL(prefix, base, suffix, flags, opc, fn, fmt) \
5810 [prefix ## _ ## opc - prefix ## _ ## base] = { \
5812 .mh_fail_id = OBD_FAIL_ ## prefix ## _ ## opc ## suffix, \
5813 .mh_opc = prefix ## _ ## opc, \
5814 .mh_flags = flags, \
5819 #define DEF_MDT_HNDL(flags, name, fn, fmt) \
5820 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, fmt)
5822 #define DEF_SEQ_HNDL(flags, name, fn, fmt) \
5823 DEF_HNDL(SEQ, QUERY, _NET, flags, name, fn, fmt)
5825 #define DEF_FLD_HNDL(flags, name, fn, fmt) \
5826 DEF_HNDL(FLD, QUERY, _NET, flags, name, fn, fmt)
5828 * Request with a format known in advance
5830 #define DEF_MDT_HNDL_F(flags, name, fn) \
5831 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, &RQF_MDS_ ## name)
5833 #define DEF_SEQ_HNDL_F(flags, name, fn) \
5834 DEF_HNDL(SEQ, QUERY, _NET, flags, name, fn, &RQF_SEQ_ ## name)
5836 #define DEF_FLD_HNDL_F(flags, name, fn) \
5837 DEF_HNDL(FLD, QUERY, _NET, flags, name, fn, &RQF_FLD_ ## name)
5839 * Request with a format we do not yet know
5841 #define DEF_MDT_HNDL_0(flags, name, fn) \
5842 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, NULL)
5844 static struct mdt_handler mdt_mds_ops[] = {
5845 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
5846 DEF_MDT_HNDL_F(0, DISCONNECT, mdt_disconnect),
5847 DEF_MDT_HNDL (0, SET_INFO, mdt_set_info,
5849 DEF_MDT_HNDL_F(0, GET_INFO, mdt_get_info),
5850 DEF_MDT_HNDL_F(0 |HABEO_REFERO, GETSTATUS, mdt_getstatus),
5851 DEF_MDT_HNDL_F(HABEO_CORPUS, GETATTR, mdt_getattr),
5852 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, GETATTR_NAME, mdt_getattr_name),
5853 DEF_MDT_HNDL_F(HABEO_CORPUS, GETXATTR, mdt_getxattr),
5854 DEF_MDT_HNDL_F(0 |HABEO_REFERO, STATFS, mdt_statfs),
5855 DEF_MDT_HNDL_F(0 |MUTABOR, REINT, mdt_reint),
5856 DEF_MDT_HNDL_F(HABEO_CORPUS, CLOSE, mdt_close),
5857 DEF_MDT_HNDL_F(HABEO_CORPUS, DONE_WRITING, mdt_done_writing),
5858 DEF_MDT_HNDL_F(0 |HABEO_REFERO, PIN, mdt_pin),
5859 DEF_MDT_HNDL_0(0, SYNC, mdt_sync),
5860 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, IS_SUBDIR, mdt_is_subdir),
5861 #ifdef HAVE_QUOTA_SUPPORT
5862 DEF_MDT_HNDL_F(0, QUOTACHECK, mdt_quotacheck_handle),
5863 DEF_MDT_HNDL_F(0, QUOTACTL, mdt_quotactl_handle)
5867 #define DEF_OBD_HNDL(flags, name, fn) \
5868 DEF_HNDL(OBD, PING, _NET, flags, name, fn, NULL)
5871 static struct mdt_handler mdt_obd_ops[] = {
5872 DEF_OBD_HNDL(0, PING, mdt_obd_ping),
5873 DEF_OBD_HNDL(0, LOG_CANCEL, mdt_obd_log_cancel),
5874 DEF_OBD_HNDL(0, QC_CALLBACK, mdt_obd_qc_callback)
5877 #define DEF_DLM_HNDL_0(flags, name, fn) \
5878 DEF_HNDL(LDLM, ENQUEUE, , flags, name, fn, NULL)
5879 #define DEF_DLM_HNDL_F(flags, name, fn) \
5880 DEF_HNDL(LDLM, ENQUEUE, , flags, name, fn, &RQF_LDLM_ ## name)
5882 static struct mdt_handler mdt_dlm_ops[] = {
5883 DEF_DLM_HNDL_F(HABEO_CLAVIS, ENQUEUE, mdt_enqueue),
5884 DEF_DLM_HNDL_0(HABEO_CLAVIS, CONVERT, mdt_convert),
5885 DEF_DLM_HNDL_0(0, BL_CALLBACK, mdt_bl_callback),
5886 DEF_DLM_HNDL_0(0, CP_CALLBACK, mdt_cp_callback)
5889 #define DEF_LLOG_HNDL(flags, name, fn) \
5890 DEF_HNDL(LLOG, ORIGIN_HANDLE_CREATE, _NET, flags, name, fn, NULL)
5892 static struct mdt_handler mdt_llog_ops[] = {
5893 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_CREATE, mdt_llog_create),
5894 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_NEXT_BLOCK, mdt_llog_next_block),
5895 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_READ_HEADER, mdt_llog_read_header),
5896 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_WRITE_REC, NULL),
5897 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_CLOSE, NULL),
5898 DEF_LLOG_HNDL(0, ORIGIN_CONNECT, NULL),
5899 DEF_LLOG_HNDL(0, CATINFO, NULL),
5900 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_PREV_BLOCK, mdt_llog_prev_block),
5901 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_DESTROY, mdt_llog_destroy),
5904 #define DEF_SEC_CTX_HNDL(name, fn) \
5905 DEF_HNDL(SEC_CTX, INIT, _NET, 0, name, fn, NULL)
5907 static struct mdt_handler mdt_sec_ctx_ops[] = {
5908 DEF_SEC_CTX_HNDL(INIT, mdt_sec_ctx_handle),
5909 DEF_SEC_CTX_HNDL(INIT_CONT, mdt_sec_ctx_handle),
5910 DEF_SEC_CTX_HNDL(FINI, mdt_sec_ctx_handle)
5913 static struct mdt_opc_slice mdt_regular_handlers[] = {
5915 .mos_opc_start = MDS_GETATTR,
5916 .mos_opc_end = MDS_LAST_OPC,
5917 .mos_hs = mdt_mds_ops
5920 .mos_opc_start = OBD_PING,
5921 .mos_opc_end = OBD_LAST_OPC,
5922 .mos_hs = mdt_obd_ops
5925 .mos_opc_start = LDLM_ENQUEUE,
5926 .mos_opc_end = LDLM_LAST_OPC,
5927 .mos_hs = mdt_dlm_ops
5930 .mos_opc_start = LLOG_ORIGIN_HANDLE_CREATE,
5931 .mos_opc_end = LLOG_LAST_OPC,
5932 .mos_hs = mdt_llog_ops
5935 .mos_opc_start = SEC_CTX_INIT,
5936 .mos_opc_end = SEC_LAST_OPC,
5937 .mos_hs = mdt_sec_ctx_ops
5944 static struct mdt_handler mdt_readpage_ops[] = {
5945 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
5946 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, READPAGE, mdt_readpage),
5947 #ifdef HAVE_SPLIT_SUPPORT
5948 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, WRITEPAGE, mdt_writepage),
5952 * XXX: this is ugly and should be fixed one day, see mdc_close() for
5953 * detailed comments. --umka
5955 DEF_MDT_HNDL_F(HABEO_CORPUS, CLOSE, mdt_close),
5956 DEF_MDT_HNDL_F(HABEO_CORPUS, DONE_WRITING, mdt_done_writing),
5959 static struct mdt_opc_slice mdt_readpage_handlers[] = {
5961 .mos_opc_start = MDS_GETATTR,
5962 .mos_opc_end = MDS_LAST_OPC,
5963 .mos_hs = mdt_readpage_ops
5970 static struct mdt_handler mdt_xmds_ops[] = {
5971 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
5972 DEF_MDT_HNDL_F(HABEO_CORPUS , GETATTR, mdt_getattr),
5973 DEF_MDT_HNDL_F(0 | MUTABOR , REINT, mdt_reint),
5974 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, IS_SUBDIR, mdt_is_subdir),
5977 static struct mdt_opc_slice mdt_xmds_handlers[] = {
5979 .mos_opc_start = MDS_GETATTR,
5980 .mos_opc_end = MDS_LAST_OPC,
5981 .mos_hs = mdt_xmds_ops
5984 .mos_opc_start = OBD_PING,
5985 .mos_opc_end = OBD_LAST_OPC,
5986 .mos_hs = mdt_obd_ops
5989 .mos_opc_start = SEC_CTX_INIT,
5990 .mos_opc_end = SEC_LAST_OPC,
5991 .mos_hs = mdt_sec_ctx_ops
5998 static struct mdt_handler mdt_seq_ops[] = {
5999 DEF_SEQ_HNDL_F(0, QUERY, (int (*)(struct mdt_thread_info *))seq_query)
6002 static struct mdt_opc_slice mdt_seq_handlers[] = {
6004 .mos_opc_start = SEQ_QUERY,
6005 .mos_opc_end = SEQ_LAST_OPC,
6006 .mos_hs = mdt_seq_ops
6013 static struct mdt_handler mdt_fld_ops[] = {
6014 DEF_FLD_HNDL_F(0, QUERY, (int (*)(struct mdt_thread_info *))fld_query)
6017 static struct mdt_opc_slice mdt_fld_handlers[] = {
6019 .mos_opc_start = FLD_QUERY,
6020 .mos_opc_end = FLD_LAST_OPC,
6021 .mos_hs = mdt_fld_ops
6028 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
6029 MODULE_DESCRIPTION("Lustre Meta-data Target ("LUSTRE_MDT_NAME")");
6030 MODULE_LICENSE("GPL");
6032 CFS_MODULE_PARM(mdt_num_threads, "ul", ulong, 0444,
6033 "number of mdt service threads to start");
6035 cfs_module(mdt, "0.2.0", mdt_mod_init, mdt_mod_exit);