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;
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 LASSERT(fid_is_sane(&reqbody->fid2));
854 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
856 PFID(mdt_object_fid(parent)), PFID(&reqbody->fid2),
859 lname = mdt_name(info->mti_env, (char *)name, namelen);
860 CDEBUG(D_INODE, "getattr with lock for "DFID"/%s, "
861 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
865 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
867 rc = mdt_object_exists(parent);
868 if (unlikely(rc == 0)) {
869 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
870 &parent->mot_obj.mo_lu,
871 "Parent doesn't exist!\n");
873 } else if (!info->mti_cross_ref) {
874 LASSERTF(rc > 0, "Parent "DFID" is on remote server\n",
875 PFID(mdt_object_fid(parent)));
878 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
886 if (info->mti_cross_ref) {
887 /* Only getattr on the child. Parent is on another node. */
888 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
890 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
891 "ldlm_rep=%p\n", PFID(mdt_object_fid(child)), ldlm_rep);
894 /* Do not take lock for resent case. */
895 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
896 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
897 lhc->mlh_reg_lh.cookie);
898 LASSERT(fid_res_name_eq(mdt_object_fid(child),
899 &lock->l_resource->lr_name));
903 mdt_lock_handle_init(lhc);
904 mdt_lock_reg_init(lhc, LCK_PR);
907 * Object's name is on another MDS, no lookup lock is
908 * needed here but update is.
910 child_bits &= ~MDS_INODELOCK_LOOKUP;
911 child_bits |= MDS_INODELOCK_UPDATE;
913 rc = mdt_object_lock(info, child, lhc, child_bits,
917 /* Finally, we can get attr for child. */
918 mdt_set_capainfo(info, 0, mdt_object_fid(child),
920 rc = mdt_getattr_internal(info, child, 0);
921 if (unlikely(rc != 0))
922 mdt_object_unlock(info, child, lhc, 1);
927 /* step 1: lock parent */
928 lhp = &info->mti_lh[MDT_LH_PARENT];
929 mdt_lock_pdo_init(lhp, LCK_PR, name, namelen);
930 rc = mdt_object_lock(info, parent, lhp, MDS_INODELOCK_UPDATE,
933 if (unlikely(rc != 0))
937 /* step 2: lookup child's fid by name */
938 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
943 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
944 GOTO(out_parent, rc);
946 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
948 *child_fid = reqbody->fid2;
949 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
953 *step 3: find the child object by fid & lock it.
954 * regardless if it is local or remote.
956 child = mdt_object_find(info->mti_env, info->mti_mdt, child_fid);
958 if (unlikely(IS_ERR(child)))
959 GOTO(out_parent, rc = PTR_ERR(child));
961 /* Do not take lock for resent case. */
962 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
963 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
964 lhc->mlh_reg_lh.cookie);
966 res_id = &lock->l_resource->lr_name;
967 if (!fid_res_name_eq(mdt_object_fid(child),
968 &lock->l_resource->lr_name)) {
969 LASSERTF(fid_res_name_eq(mdt_object_fid(parent),
970 &lock->l_resource->lr_name),
971 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
972 (unsigned long)res_id->name[0],
973 (unsigned long)res_id->name[1],
974 (unsigned long)res_id->name[2],
975 PFID(mdt_object_fid(parent)));
976 CWARN("Although resent, but still not get child lock"
977 "parent:"DFID" child:"DFID"\n",
978 PFID(mdt_object_fid(parent)),
979 PFID(mdt_object_fid(child)));
980 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
988 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout*2);
989 mdt_lock_handle_init(lhc);
990 mdt_lock_reg_init(lhc, LCK_PR);
992 if (mdt_object_exists(child) == 0) {
993 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
994 &child->mot_obj.mo_lu,
995 "Object doesn't exist!\n");
996 GOTO(out_child, rc = -ESTALE);
999 if (!(child_bits & MDS_INODELOCK_UPDATE)) {
1000 struct md_attr *ma = &info->mti_attr;
1003 ma->ma_need = MA_INODE;
1004 rc = mo_attr_get(info->mti_env,
1005 mdt_object_child(child), ma);
1006 if (unlikely(rc != 0))
1007 GOTO(out_child, rc);
1009 /* If the file has not been changed for some time, we
1010 * return not only a LOOKUP lock, but also an UPDATE
1011 * lock and this might save us RPC on later STAT. For
1012 * directories, it also let negative dentry starts
1013 * working for this dir. */
1014 if (ma->ma_valid & MA_INODE &&
1015 ma->ma_attr.la_valid & LA_CTIME &&
1016 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1017 ma->ma_attr.la_ctime < cfs_time_current_sec())
1018 child_bits |= MDS_INODELOCK_UPDATE;
1021 rc = mdt_object_lock(info, child, lhc, child_bits,
1024 if (unlikely(rc != 0))
1025 GOTO(out_child, rc);
1028 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1029 /* Get MA_SOM attributes if update lock is given. */
1031 lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_UPDATE &&
1032 S_ISREG(lu_object_attr(&mdt_object_child(child)->mo_lu)))
1035 /* finally, we can get attr for child. */
1036 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1037 rc = mdt_getattr_internal(info, child, ma_need);
1038 if (unlikely(rc != 0)) {
1039 mdt_object_unlock(info, child, lhc, 1);
1041 /* Debugging code. */
1042 res_id = &lock->l_resource->lr_name;
1043 LDLM_DEBUG(lock, "Returning lock to client");
1044 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1045 &lock->l_resource->lr_name),
1046 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
1047 (unsigned long)res_id->name[0],
1048 (unsigned long)res_id->name[1],
1049 (unsigned long)res_id->name[2],
1050 PFID(mdt_object_fid(child)));
1051 mdt_pack_size2body(info, child);
1054 LDLM_LOCK_PUT(lock);
1058 mdt_object_put(info->mti_env, child);
1060 mdt_object_unlock(info, parent, lhp, 1);
1064 /* normal handler: should release the child lock */
1065 static int mdt_getattr_name(struct mdt_thread_info *info)
1067 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1068 struct mdt_body *reqbody;
1069 struct mdt_body *repbody;
1073 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1074 LASSERT(reqbody != NULL);
1075 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1076 LASSERT(repbody != NULL);
1078 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
1079 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1080 repbody->eadatasize = 0;
1081 repbody->aclsize = 0;
1083 rc = mdt_init_ucred(info, reqbody);
1085 GOTO(out_shrink, rc);
1087 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1088 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1089 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1090 lhc->mlh_reg_lh.cookie = 0;
1092 mdt_exit_ucred(info);
1095 mdt_shrink_reply(info);
1099 static const struct lu_device_operations mdt_lu_ops;
1101 static int lu_device_is_mdt(struct lu_device *d)
1103 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &mdt_lu_ops);
1106 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1107 void *karg, void *uarg);
1109 static int mdt_set_info(struct mdt_thread_info *info)
1111 struct ptlrpc_request *req = mdt_info_req(info);
1114 int keylen, vallen, rc = 0;
1117 rc = req_capsule_server_pack(info->mti_pill);
1121 key = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_KEY);
1123 DEBUG_REQ(D_HA, req, "no set_info key");
1127 keylen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_KEY,
1130 val = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_VAL);
1132 DEBUG_REQ(D_HA, req, "no set_info val");
1136 vallen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_VAL,
1139 /* Swab any part of val you need to here */
1140 if (KEY_IS(KEY_READ_ONLY)) {
1142 lustre_msg_set_status(req->rq_repmsg, 0);
1144 cfs_spin_lock(&req->rq_export->exp_lock);
1146 req->rq_export->exp_connect_flags |= OBD_CONNECT_RDONLY;
1148 req->rq_export->exp_connect_flags &=~OBD_CONNECT_RDONLY;
1149 cfs_spin_unlock(&req->rq_export->exp_lock);
1151 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1152 struct changelog_setinfo *cs =
1153 (struct changelog_setinfo *)val;
1154 if (vallen != sizeof(*cs)) {
1155 CERROR("Bad changelog_clear setinfo size %d\n", vallen);
1158 if (ptlrpc_req_need_swab(req)) {
1159 __swab64s(&cs->cs_recno);
1160 __swab32s(&cs->cs_id);
1163 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, info->mti_exp,
1165 lustre_msg_set_status(req->rq_repmsg, rc);
1173 static int mdt_connect(struct mdt_thread_info *info)
1176 struct ptlrpc_request *req;
1178 req = mdt_info_req(info);
1179 rc = target_handle_connect(req);
1181 LASSERT(req->rq_export != NULL);
1182 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
1183 rc = mdt_init_sec_level(info);
1185 rc = mdt_init_idmap(info);
1187 obd_disconnect(class_export_get(req->rq_export));
1189 rc = err_serious(rc);
1194 static int mdt_disconnect(struct mdt_thread_info *info)
1199 rc = target_handle_disconnect(mdt_info_req(info));
1201 rc = err_serious(rc);
1205 static int mdt_sendpage(struct mdt_thread_info *info,
1206 struct lu_rdpg *rdpg)
1208 struct ptlrpc_request *req = mdt_info_req(info);
1209 struct obd_export *exp = req->rq_export;
1210 struct ptlrpc_bulk_desc *desc;
1211 struct l_wait_info *lwi = &info->mti_u.rdpg.mti_wait_info;
1219 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, BULK_PUT_SOURCE,
1224 for (i = 0, tmpcount = rdpg->rp_count;
1225 i < rdpg->rp_npages; i++, tmpcount -= tmpsize) {
1226 tmpsize = min_t(int, tmpcount, CFS_PAGE_SIZE);
1227 ptlrpc_prep_bulk_page(desc, rdpg->rp_pages[i], 0, tmpsize);
1230 LASSERT(desc->bd_nob == rdpg->rp_count);
1231 rc = sptlrpc_svc_wrap_bulk(req, desc);
1233 GOTO(free_desc, rc);
1235 rc = ptlrpc_start_bulk_transfer(desc);
1237 GOTO(free_desc, rc);
1239 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1240 GOTO(abort_bulk, rc = 0);
1243 timeout = (int) req->rq_deadline - cfs_time_current_sec();
1245 CERROR("Req deadline already passed %lu (now: %lu)\n",
1246 req->rq_deadline, cfs_time_current_sec());
1247 *lwi = LWI_TIMEOUT_INTERVAL(cfs_time_seconds(max(timeout, 1)),
1248 cfs_time_seconds(1), NULL, NULL);
1249 rc = l_wait_event(desc->bd_waitq,
1250 !ptlrpc_server_bulk_active(desc) ||
1252 exp->exp_abort_active_req, lwi);
1253 LASSERT (rc == 0 || rc == -ETIMEDOUT);
1254 } while ((rc == -ETIMEDOUT) &&
1255 (req->rq_deadline > cfs_time_current_sec()));
1258 if (desc->bd_success &&
1259 desc->bd_nob_transferred == rdpg->rp_count)
1260 GOTO(free_desc, rc);
1263 if (exp->exp_abort_active_req || exp->exp_failed)
1264 GOTO(abort_bulk, rc);
1267 DEBUG_REQ(D_ERROR, req, "bulk failed: %s %d(%d), evicting %s@%s",
1268 (rc == -ETIMEDOUT) ? "timeout" : "network error",
1269 desc->bd_nob_transferred, rdpg->rp_count,
1270 exp->exp_client_uuid.uuid,
1271 exp->exp_connection->c_remote_uuid.uuid);
1273 class_fail_export(exp);
1277 ptlrpc_abort_bulk(desc);
1279 ptlrpc_free_bulk(desc);
1283 #ifdef HAVE_SPLIT_SUPPORT
1285 * Retrieve dir entry from the page and insert it to the slave object, actually,
1286 * this should be in osd layer, but since it will not in the final product, so
1287 * just do it here and do not define more moo api anymore for this.
1289 static int mdt_write_dir_page(struct mdt_thread_info *info, struct page *page,
1292 struct mdt_object *object = info->mti_object;
1293 struct lu_fid *lf = &info->mti_tmp_fid2;
1294 struct md_attr *ma = &info->mti_attr;
1295 struct lu_dirpage *dp;
1296 struct lu_dirent *ent;
1297 int rc = 0, offset = 0;
1300 /* Make sure we have at least one entry. */
1305 * Disable trans for this name insert, since it will include many trans
1308 info->mti_no_need_trans = 1;
1310 * When write_dir_page, no need update parent's ctime,
1311 * and no permission check for name_insert.
1313 ma->ma_attr.la_ctime = 0;
1314 ma->ma_attr.la_valid = LA_MODE;
1315 ma->ma_valid = MA_INODE;
1318 dp = page_address(page);
1319 offset = (int)((__u32)lu_dirent_start(dp) - (__u32)dp);
1321 for (ent = lu_dirent_start(dp); ent != NULL;
1322 ent = lu_dirent_next(ent)) {
1323 struct lu_name *lname;
1326 if (le16_to_cpu(ent->lde_namelen) == 0)
1329 fid_le_to_cpu(lf, &ent->lde_fid);
1330 if (le64_to_cpu(ent->lde_hash) & MAX_HASH_HIGHEST_BIT)
1331 ma->ma_attr.la_mode = S_IFDIR;
1333 ma->ma_attr.la_mode = 0;
1334 OBD_ALLOC(name, le16_to_cpu(ent->lde_namelen) + 1);
1336 GOTO(out, rc = -ENOMEM);
1338 memcpy(name, ent->lde_name, le16_to_cpu(ent->lde_namelen));
1339 lname = mdt_name(info->mti_env, name,
1340 le16_to_cpu(ent->lde_namelen));
1341 ma->ma_attr_flags |= (MDS_PERM_BYPASS | MDS_QUOTA_IGNORE);
1342 rc = mdo_name_insert(info->mti_env,
1343 md_object_next(&object->mot_obj),
1345 OBD_FREE(name, le16_to_cpu(ent->lde_namelen) + 1);
1347 CERROR("Can't insert %*.*s, rc %d\n",
1348 le16_to_cpu(ent->lde_namelen),
1349 le16_to_cpu(ent->lde_namelen),
1354 offset += lu_dirent_size(ent);
1364 static int mdt_bulk_timeout(void *data)
1368 CERROR("mdt bulk transfer timeout \n");
1373 static int mdt_writepage(struct mdt_thread_info *info)
1375 struct ptlrpc_request *req = mdt_info_req(info);
1376 struct mdt_body *reqbody;
1377 struct l_wait_info *lwi;
1378 struct ptlrpc_bulk_desc *desc;
1384 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1385 if (reqbody == NULL)
1386 RETURN(err_serious(-EFAULT));
1388 desc = ptlrpc_prep_bulk_exp(req, 1, BULK_GET_SINK, MDS_BULK_PORTAL);
1390 RETURN(err_serious(-ENOMEM));
1392 /* allocate the page for the desc */
1393 page = cfs_alloc_page(CFS_ALLOC_STD);
1395 GOTO(desc_cleanup, rc = -ENOMEM);
1397 CDEBUG(D_INFO, "Received page offset %d size %d \n",
1398 (int)reqbody->size, (int)reqbody->nlink);
1400 ptlrpc_prep_bulk_page(desc, page, (int)reqbody->size,
1401 (int)reqbody->nlink);
1403 rc = sptlrpc_svc_prep_bulk(req, desc);
1405 GOTO(cleanup_page, rc);
1407 * Check if client was evicted while we were doing i/o before touching
1412 GOTO(cleanup_page, rc = -ENOMEM);
1414 if (desc->bd_export->exp_failed)
1417 rc = ptlrpc_start_bulk_transfer (desc);
1419 *lwi = LWI_TIMEOUT_INTERVAL(obd_timeout * CFS_HZ / 4, CFS_HZ,
1420 mdt_bulk_timeout, desc);
1421 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc) ||
1422 desc->bd_export->exp_failed, lwi);
1423 LASSERT(rc == 0 || rc == -ETIMEDOUT);
1424 if (rc == -ETIMEDOUT) {
1425 DEBUG_REQ(D_ERROR, req, "timeout on bulk GET");
1426 ptlrpc_abort_bulk(desc);
1427 } else if (desc->bd_export->exp_failed) {
1428 DEBUG_REQ(D_ERROR, req, "Eviction on bulk GET");
1430 ptlrpc_abort_bulk(desc);
1431 } else if (!desc->bd_success ||
1432 desc->bd_nob_transferred != desc->bd_nob) {
1433 DEBUG_REQ(D_ERROR, req, "%s bulk GET %d(%d)",
1435 "truncated" : "network error on",
1436 desc->bd_nob_transferred, desc->bd_nob);
1437 /* XXX should this be a different errno? */
1441 DEBUG_REQ(D_ERROR, req, "ptlrpc_bulk_get failed: rc %d", rc);
1444 GOTO(cleanup_lwi, rc);
1445 rc = mdt_write_dir_page(info, page, reqbody->nlink);
1450 cfs_free_page(page);
1452 ptlrpc_free_bulk(desc);
1457 static int mdt_readpage(struct mdt_thread_info *info)
1459 struct mdt_object *object = info->mti_object;
1460 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1461 struct mdt_body *reqbody;
1462 struct mdt_body *repbody;
1467 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1468 RETURN(err_serious(-ENOMEM));
1470 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1471 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1472 if (reqbody == NULL || repbody == NULL)
1473 RETURN(err_serious(-EFAULT));
1476 * prepare @rdpg before calling lower layers and transfer itself. Here
1477 * reqbody->size contains offset of where to start to read and
1478 * reqbody->nlink contains number bytes to read.
1480 rdpg->rp_hash = reqbody->size;
1481 if (rdpg->rp_hash != reqbody->size) {
1482 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1483 rdpg->rp_hash, reqbody->size);
1487 rdpg->rp_attrs = reqbody->mode;
1488 rdpg->rp_count = reqbody->nlink;
1489 rdpg->rp_npages = (rdpg->rp_count + CFS_PAGE_SIZE - 1)>>CFS_PAGE_SHIFT;
1490 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1491 if (rdpg->rp_pages == NULL)
1494 for (i = 0; i < rdpg->rp_npages; ++i) {
1495 rdpg->rp_pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
1496 if (rdpg->rp_pages[i] == NULL)
1497 GOTO(free_rdpg, rc = -ENOMEM);
1500 /* call lower layers to fill allocated pages with directory data */
1501 rc = mo_readpage(info->mti_env, mdt_object_child(object), rdpg);
1503 GOTO(free_rdpg, rc);
1505 /* send pages to client */
1506 rc = mdt_sendpage(info, rdpg);
1511 for (i = 0; i < rdpg->rp_npages; i++)
1512 if (rdpg->rp_pages[i] != NULL)
1513 cfs_free_page(rdpg->rp_pages[i]);
1514 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1516 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1522 static int mdt_reint_internal(struct mdt_thread_info *info,
1523 struct mdt_lock_handle *lhc,
1526 struct req_capsule *pill = info->mti_pill;
1527 struct mdt_device *mdt = info->mti_mdt;
1528 struct md_quota *mq = md_quota(info->mti_env);
1529 struct mdt_body *repbody;
1534 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1535 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1536 mdt->mdt_max_mdsize);
1537 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1538 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
1539 mdt->mdt_max_cookiesize);
1541 rc = req_capsule_server_pack(pill);
1543 CERROR("Can't pack response, rc %d\n", rc);
1544 RETURN(err_serious(rc));
1547 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1548 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1550 repbody->eadatasize = 0;
1551 repbody->aclsize = 0;
1554 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNPACK))
1555 GOTO(out_shrink, rc = err_serious(-EFAULT));
1557 rc = mdt_reint_unpack(info, op);
1559 CERROR("Can't unpack reint, rc %d\n", rc);
1560 GOTO(out_shrink, rc = err_serious(rc));
1563 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1565 /* for replay no cookkie / lmm need, because client have this already */
1566 if (info->mti_spec.no_create == 1) {
1567 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1568 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1570 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1571 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
1575 rc = mdt_init_ucred_reint(info);
1577 GOTO(out_shrink, rc);
1579 rc = mdt_fix_attr_ucred(info, op);
1581 GOTO(out_ucred, rc = err_serious(rc));
1583 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1584 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1585 GOTO(out_ucred, rc);
1587 mq->mq_exp = info->mti_exp;
1588 rc = mdt_reint_rec(info, lhc);
1591 mdt_exit_ucred(info);
1593 mdt_shrink_reply(info);
1597 static long mdt_reint_opcode(struct mdt_thread_info *info,
1598 const struct req_format **fmt)
1600 struct mdt_rec_reint *rec;
1603 opc = err_serious(-EFAULT);
1604 rec = req_capsule_client_get(info->mti_pill, &RMF_REC_REINT);
1606 opc = rec->rr_opcode;
1607 DEBUG_REQ(D_INODE, mdt_info_req(info), "reint opt = %ld", opc);
1608 if (opc < REINT_MAX && fmt[opc] != NULL)
1609 req_capsule_extend(info->mti_pill, fmt[opc]);
1611 CERROR("Unsupported opc: %ld\n", opc);
1612 opc = err_serious(opc);
1618 static int mdt_reint(struct mdt_thread_info *info)
1623 static const struct req_format *reint_fmts[REINT_MAX] = {
1624 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1625 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1626 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1627 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1628 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1629 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1630 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR
1635 opc = mdt_reint_opcode(info, reint_fmts);
1638 * No lock possible here from client to pass it to reint code
1641 rc = mdt_reint_internal(info, NULL, opc);
1646 info->mti_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1650 /* this should sync the whole device */
1651 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1653 struct dt_device *dt = mdt->mdt_bottom;
1657 rc = dt->dd_ops->dt_sync(env, dt);
1661 /* this should sync this object */
1662 static int mdt_object_sync(struct mdt_thread_info *info)
1664 struct md_object *next;
1668 if (!mdt_object_exists(info->mti_object)) {
1669 CWARN("Non existing object "DFID"!\n",
1670 PFID(mdt_object_fid(info->mti_object)));
1673 next = mdt_object_child(info->mti_object);
1674 rc = mo_object_sync(info->mti_env, next);
1679 static int mdt_sync(struct mdt_thread_info *info)
1681 struct req_capsule *pill = info->mti_pill;
1682 struct mdt_body *body;
1686 /* The fid may be zero, so we req_capsule_set manually */
1687 req_capsule_set(pill, &RQF_MDS_SYNC);
1689 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
1691 RETURN(err_serious(-EINVAL));
1693 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1694 RETURN(err_serious(-ENOMEM));
1696 if (fid_seq(&body->fid1) == 0) {
1697 /* sync the whole device */
1698 rc = req_capsule_server_pack(pill);
1700 rc = mdt_device_sync(info->mti_env, info->mti_mdt);
1702 rc = err_serious(rc);
1704 /* sync an object */
1705 rc = mdt_unpack_req_pack_rep(info, HABEO_CORPUS|HABEO_REFERO);
1707 rc = mdt_object_sync(info);
1709 struct md_object *next;
1710 const struct lu_fid *fid;
1711 struct lu_attr *la = &info->mti_attr.ma_attr;
1713 next = mdt_object_child(info->mti_object);
1714 info->mti_attr.ma_need = MA_INODE;
1715 info->mti_attr.ma_valid = 0;
1716 rc = mo_attr_get(info->mti_env, next,
1719 body = req_capsule_server_get(pill,
1721 fid = mdt_object_fid(info->mti_object);
1722 mdt_pack_attr2body(info, body, la, fid);
1726 rc = err_serious(rc);
1731 #ifdef HAVE_QUOTA_SUPPORT
1732 static int mdt_quotacheck_handle(struct mdt_thread_info *info)
1734 struct obd_quotactl *oqctl;
1735 struct req_capsule *pill = info->mti_pill;
1736 struct obd_export *exp = info->mti_exp;
1737 struct md_quota *mq = md_quota(info->mti_env);
1738 struct md_device *next = info->mti_mdt->mdt_child;
1742 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1746 /* remote client has no permission for quotacheck */
1747 if (unlikely(exp_connect_rmtclient(exp)))
1750 rc = req_capsule_server_pack(pill);
1755 rc = next->md_ops->mdo_quota.mqo_check(info->mti_env, next,
1760 static int mdt_quotactl_handle(struct mdt_thread_info *info)
1762 struct obd_quotactl *oqctl, *repoqc;
1763 struct req_capsule *pill = info->mti_pill;
1764 struct obd_export *exp = info->mti_exp;
1765 struct md_quota *mq = md_quota(info->mti_env);
1766 struct md_device *next = info->mti_mdt->mdt_child;
1767 const struct md_quota_operations *mqo = &next->md_ops->mdo_quota;
1771 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1776 if (exp_connect_rmtclient(exp)) {
1777 struct ptlrpc_request *req = mdt_info_req(info);
1778 struct mdt_export_data *med = mdt_req2med(req);
1779 struct lustre_idmap_table *idmap = med->med_idmap;
1781 if (unlikely(oqctl->qc_cmd != Q_GETQUOTA &&
1782 oqctl->qc_cmd != Q_GETINFO))
1786 if (oqctl->qc_type == USRQUOTA)
1787 id = lustre_idmap_lookup_uid(NULL, idmap, 0,
1789 else if (oqctl->qc_type == GRPQUOTA)
1790 id = lustre_idmap_lookup_gid(NULL, idmap, 0,
1795 if (id == CFS_IDMAP_NOTFOUND) {
1796 CDEBUG(D_QUOTA, "no mapping for id %u\n",
1802 rc = req_capsule_server_pack(pill);
1806 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
1807 LASSERT(repoqc != NULL);
1810 switch (oqctl->qc_cmd) {
1812 rc = mqo->mqo_on(info->mti_env, next, oqctl->qc_type);
1815 rc = mqo->mqo_off(info->mti_env, next, oqctl->qc_type);
1818 rc = mqo->mqo_setinfo(info->mti_env, next, oqctl->qc_type, id,
1822 rc = mqo->mqo_getinfo(info->mti_env, next, oqctl->qc_type, id,
1826 rc = mqo->mqo_setquota(info->mti_env, next, oqctl->qc_type, id,
1830 rc = mqo->mqo_getquota(info->mti_env, next, oqctl->qc_type, id,
1834 rc = mqo->mqo_getoinfo(info->mti_env, next, oqctl->qc_type, id,
1838 rc = mqo->mqo_getoquota(info->mti_env, next, oqctl->qc_type, id,
1841 case LUSTRE_Q_INVALIDATE:
1842 rc = mqo->mqo_invalidate(info->mti_env, next, oqctl->qc_type);
1844 case LUSTRE_Q_FINVALIDATE:
1845 rc = mqo->mqo_finvalidate(info->mti_env, next, oqctl->qc_type);
1848 CERROR("unsupported mdt_quotactl command: %d\n",
1860 * OBD PING and other handlers.
1862 static int mdt_obd_ping(struct mdt_thread_info *info)
1867 req_capsule_set(info->mti_pill, &RQF_OBD_PING);
1869 rc = target_handle_ping(mdt_info_req(info));
1871 rc = err_serious(rc);
1875 static int mdt_obd_log_cancel(struct mdt_thread_info *info)
1877 return err_serious(-EOPNOTSUPP);
1880 static int mdt_obd_qc_callback(struct mdt_thread_info *info)
1882 return err_serious(-EOPNOTSUPP);
1890 /** clone llog ctxt from child (mdd)
1891 * This allows remote llog (replicator) access.
1892 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
1893 * context was originally set up, or we can handle them directly.
1894 * I choose the latter, but that means I need any llog
1895 * contexts set up by child to be accessable by the mdt. So we clone the
1896 * context into our context list here.
1898 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
1901 struct md_device *next = mdt->mdt_child;
1902 struct llog_ctxt *ctxt;
1905 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
1908 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
1909 if (rc || ctxt == NULL) {
1910 CERROR("Can't get mdd ctxt %d\n", rc);
1914 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
1916 CERROR("Can't set mdt ctxt %d\n", rc);
1921 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
1922 struct mdt_device *mdt, int idx)
1924 struct llog_ctxt *ctxt;
1926 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
1929 /* Put once for the get we just did, and once for the clone */
1930 llog_ctxt_put(ctxt);
1931 llog_ctxt_put(ctxt);
1935 static int mdt_llog_create(struct mdt_thread_info *info)
1939 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_CREATE);
1940 rc = llog_origin_handle_create(mdt_info_req(info));
1941 return (rc < 0 ? err_serious(rc) : rc);
1944 static int mdt_llog_destroy(struct mdt_thread_info *info)
1948 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1949 rc = llog_origin_handle_destroy(mdt_info_req(info));
1950 return (rc < 0 ? err_serious(rc) : rc);
1953 static int mdt_llog_read_header(struct mdt_thread_info *info)
1957 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1958 rc = llog_origin_handle_read_header(mdt_info_req(info));
1959 return (rc < 0 ? err_serious(rc) : rc);
1962 static int mdt_llog_next_block(struct mdt_thread_info *info)
1966 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1967 rc = llog_origin_handle_next_block(mdt_info_req(info));
1968 return (rc < 0 ? err_serious(rc) : rc);
1971 static int mdt_llog_prev_block(struct mdt_thread_info *info)
1975 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1976 rc = llog_origin_handle_prev_block(mdt_info_req(info));
1977 return (rc < 0 ? err_serious(rc) : rc);
1984 static struct ldlm_callback_suite cbs = {
1985 .lcs_completion = ldlm_server_completion_ast,
1986 .lcs_blocking = ldlm_server_blocking_ast,
1990 static int mdt_enqueue(struct mdt_thread_info *info)
1992 struct ptlrpc_request *req;
1996 * info->mti_dlm_req already contains swapped and (if necessary)
1997 * converted dlm request.
1999 LASSERT(info->mti_dlm_req != NULL);
2001 req = mdt_info_req(info);
2002 rc = ldlm_handle_enqueue0(info->mti_mdt->mdt_namespace,
2003 req, info->mti_dlm_req, &cbs);
2004 info->mti_fail_id = OBD_FAIL_LDLM_REPLY;
2005 return rc ? err_serious(rc) : req->rq_status;
2008 static int mdt_convert(struct mdt_thread_info *info)
2011 struct ptlrpc_request *req;
2013 LASSERT(info->mti_dlm_req);
2014 req = mdt_info_req(info);
2015 rc = ldlm_handle_convert0(req, info->mti_dlm_req);
2016 return rc ? err_serious(rc) : req->rq_status;
2019 static int mdt_bl_callback(struct mdt_thread_info *info)
2021 CERROR("bl callbacks should not happen on MDS\n");
2023 return err_serious(-EOPNOTSUPP);
2026 static int mdt_cp_callback(struct mdt_thread_info *info)
2028 CERROR("cp callbacks should not happen on MDS\n");
2030 return err_serious(-EOPNOTSUPP);
2034 * sec context handlers
2036 static int mdt_sec_ctx_handle(struct mdt_thread_info *info)
2040 rc = mdt_handle_idmap(info);
2043 struct ptlrpc_request *req = mdt_info_req(info);
2046 opc = lustre_msg_get_opc(req->rq_reqmsg);
2047 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
2048 sptlrpc_svc_ctx_invalidate(req);
2051 OBD_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, obd_fail_val);
2056 static struct mdt_object *mdt_obj(struct lu_object *o)
2058 LASSERT(lu_device_is_mdt(o->lo_dev));
2059 return container_of0(o, struct mdt_object, mot_obj.mo_lu);
2062 struct mdt_object *mdt_object_find(const struct lu_env *env,
2063 struct mdt_device *d,
2064 const struct lu_fid *f)
2066 struct lu_object *o;
2067 struct mdt_object *m;
2070 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2071 o = lu_object_find(env, &d->mdt_md_dev.md_lu_dev, f, NULL);
2072 if (unlikely(IS_ERR(o)))
2073 m = (struct mdt_object *)o;
2080 * Asyncronous commit for mdt device.
2082 * Pass asynchonous commit call down the MDS stack.
2084 * \param env environment
2085 * \param mdt the mdt device
2087 static void mdt_device_commit_async(const struct lu_env *env,
2088 struct mdt_device *mdt)
2090 struct dt_device *dt = mdt->mdt_bottom;
2093 rc = dt->dd_ops->dt_commit_async(env, dt);
2094 if (unlikely(rc != 0))
2095 CWARN("async commit start failed with rc = %d", rc);
2099 * Mark the lock as "synchonous".
2101 * Mark the lock to deffer transaction commit to the unlock time.
2103 * \param lock the lock to mark as "synchonous"
2105 * \see mdt_is_lock_sync
2106 * \see mdt_save_lock
2108 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2110 lock->l_ast_data = (void*)1;
2114 * Check whehter the lock "synchonous" or not.
2116 * \param lock the lock to check
2117 * \retval 1 the lock is "synchonous"
2118 * \retval 0 the lock isn't "synchronous"
2120 * \see mdt_set_lock_sync
2121 * \see mdt_save_lock
2123 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2125 return lock->l_ast_data != NULL;
2129 * Blocking AST for mdt locks.
2131 * Starts transaction commit if in case of COS lock conflict or
2132 * deffers such a commit to the mdt_save_lock.
2134 * \param lock the lock which blocks a request or cancelling lock
2135 * \param desc unused
2136 * \param data unused
2137 * \param flag indicates whether this cancelling or blocking callback
2139 * \see ldlm_blocking_ast_nocheck
2141 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2142 void *data, int flag)
2144 struct obd_device *obd = ldlm_lock_to_ns(lock)->ns_obd;
2145 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2149 if (flag == LDLM_CB_CANCELING)
2151 lock_res_and_lock(lock);
2152 if (lock->l_blocking_ast != mdt_blocking_ast) {
2153 unlock_res_and_lock(lock);
2156 if (mdt_cos_is_enabled(mdt) &&
2157 lock->l_req_mode & (LCK_PW | LCK_EX) &&
2158 lock->l_blocking_lock != NULL &&
2159 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
2160 mdt_set_lock_sync(lock);
2162 rc = ldlm_blocking_ast_nocheck(lock);
2164 /* There is no lock conflict if l_blocking_lock == NULL,
2165 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2166 * when the last reference to a local lock was released */
2167 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2170 rc = lu_env_init(&env, LCT_MD_THREAD);
2171 if (unlikely(rc != 0))
2172 CWARN("lu_env initialization failed with rc = %d,"
2173 "cannot start asynchronous commit\n", rc);
2175 mdt_device_commit_async(&env, mdt);
2181 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2182 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2184 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2185 ldlm_policy_data_t *policy = &info->mti_policy;
2186 struct ldlm_res_id *res_id = &info->mti_res_id;
2190 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2191 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2192 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2193 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2195 if (mdt_object_exists(o) < 0) {
2196 if (locality == MDT_CROSS_LOCK) {
2197 /* cross-ref object fix */
2198 ibits &= ~MDS_INODELOCK_UPDATE;
2199 ibits |= MDS_INODELOCK_LOOKUP;
2201 LASSERT(!(ibits & MDS_INODELOCK_UPDATE));
2202 LASSERT(ibits & MDS_INODELOCK_LOOKUP);
2204 /* No PDO lock on remote object */
2205 LASSERT(lh->mlh_type != MDT_PDO_LOCK);
2208 if (lh->mlh_type == MDT_PDO_LOCK) {
2209 /* check for exists after object is locked */
2210 if (mdt_object_exists(o) == 0) {
2211 /* Non-existent object shouldn't have PDO lock */
2214 /* Non-dir object shouldn't have PDO lock */
2215 if (!S_ISDIR(lu_object_attr(&o->mot_obj.mo_lu)))
2220 memset(policy, 0, sizeof(*policy));
2221 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2224 * Take PDO lock on whole directory and build correct @res_id for lock
2225 * on part of directory.
2227 if (lh->mlh_pdo_hash != 0) {
2228 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2229 mdt_lock_pdo_mode(info, o, lh);
2230 if (lh->mlh_pdo_mode != LCK_NL) {
2232 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2233 * is never going to be sent to client and we do not
2234 * want it slowed down due to possible cancels.
2236 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2237 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2238 policy, res_id, LDLM_FL_ATOMIC_CB,
2239 &info->mti_exp->exp_handle.h_cookie);
2245 * Finish res_id initializing by name hash marking part of
2246 * directory which is taking modification.
2248 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2251 policy->l_inodebits.bits = ibits;
2254 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2255 * going to be sent to client. If it is - mdt_intent_policy() path will
2256 * fix it up and turn FL_LOCAL flag off.
2258 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2259 res_id, LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB,
2260 &info->mti_exp->exp_handle.h_cookie);
2262 mdt_object_unlock(info, o, lh, 1);
2263 else if (unlikely(OBD_FAIL_PRECHECK(OBD_FAIL_MDS_PDO_LOCK)) &&
2264 lh->mlh_pdo_hash != 0 &&
2265 (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX)) {
2266 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK, 10);
2273 * Save a lock within request object.
2275 * Keep the lock referenced until whether client ACK or transaction
2276 * commit happens or release the lock immediately depending on input
2277 * parameters. If COS is ON, a write lock is converted to COS lock
2280 * \param info thead info object
2281 * \param h lock handle
2282 * \param mode lock mode
2283 * \param decref force immediate lock releasing
2286 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2287 ldlm_mode_t mode, int decref)
2291 if (lustre_handle_is_used(h)) {
2292 if (decref || !info->mti_has_trans ||
2293 !(mode & (LCK_PW | LCK_EX))){
2294 mdt_fid_unlock(h, mode);
2296 struct mdt_device *mdt = info->mti_mdt;
2297 struct ldlm_lock *lock = ldlm_handle2lock(h);
2298 struct ptlrpc_request *req = mdt_info_req(info);
2301 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2303 CDEBUG(D_HA, "request = %p reply state = %p"
2304 " transno = "LPD64"\n",
2305 req, req->rq_reply_state, req->rq_transno);
2306 if (mdt_cos_is_enabled(mdt)) {
2308 ldlm_lock_downgrade(lock, LCK_COS);
2311 ptlrpc_save_lock(req, h, mode, no_ack);
2312 if (mdt_is_lock_sync(lock)) {
2313 CDEBUG(D_HA, "found sync-lock,"
2314 " async commit started\n");
2315 mdt_device_commit_async(info->mti_env,
2318 LDLM_LOCK_PUT(lock);
2327 * Unlock mdt object.
2329 * Immeditely release the regular lock and the PDO lock or save the
2330 * lock in reqeuest and keep them referenced until client ACK or
2331 * transaction commit.
2333 * \param info thread info object
2334 * \param o mdt object
2335 * \param lh mdt lock handle referencing regular and PDO locks
2336 * \param decref force immediate lock releasing
2338 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2339 struct mdt_lock_handle *lh, int decref)
2343 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2344 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2349 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2350 const struct lu_fid *f,
2351 struct mdt_lock_handle *lh,
2354 struct mdt_object *o;
2356 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2360 rc = mdt_object_lock(info, o, lh, ibits,
2363 mdt_object_put(info->mti_env, o);
2370 void mdt_object_unlock_put(struct mdt_thread_info * info,
2371 struct mdt_object * o,
2372 struct mdt_lock_handle *lh,
2375 mdt_object_unlock(info, o, lh, decref);
2376 mdt_object_put(info->mti_env, o);
2379 static struct mdt_handler *mdt_handler_find(__u32 opc,
2380 struct mdt_opc_slice *supported)
2382 struct mdt_opc_slice *s;
2383 struct mdt_handler *h;
2386 for (s = supported; s->mos_hs != NULL; s++) {
2387 if (s->mos_opc_start <= opc && opc < s->mos_opc_end) {
2388 h = s->mos_hs + (opc - s->mos_opc_start);
2389 if (likely(h->mh_opc != 0))
2390 LASSERTF(h->mh_opc == opc,
2391 "opcode mismatch %d != %d\n",
2394 h = NULL; /* unsupported opc */
2401 static int mdt_lock_resname_compat(struct mdt_device *m,
2402 struct ldlm_request *req)
2404 /* XXX something... later. */
2408 static int mdt_lock_reply_compat(struct mdt_device *m, struct ldlm_reply *rep)
2410 /* XXX something... later. */
2415 * Generic code handling requests that have struct mdt_body passed in:
2417 * - extract mdt_body from request and save it in @info, if present;
2419 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2422 * - if HABEO_CORPUS flag is set for this request type check whether object
2423 * actually exists on storage (lu_object_exists()).
2426 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2428 const struct mdt_body *body;
2429 struct mdt_object *obj;
2430 const struct lu_env *env;
2431 struct req_capsule *pill;
2435 env = info->mti_env;
2436 pill = info->mti_pill;
2438 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2442 if (!(body->valid & OBD_MD_FLID))
2445 if (!fid_is_sane(&body->fid1)) {
2446 CERROR("Invalid fid: "DFID"\n", PFID(&body->fid1));
2451 * Do not get size or any capa fields before we check that request
2452 * contains capa actually. There are some requests which do not, for
2453 * instance MDS_IS_SUBDIR.
2455 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2456 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2457 mdt_set_capainfo(info, 0, &body->fid1,
2458 req_capsule_client_get(pill, &RMF_CAPA1));
2460 obj = mdt_object_find(env, info->mti_mdt, &body->fid1);
2462 if ((flags & HABEO_CORPUS) &&
2463 !mdt_object_exists(obj)) {
2464 mdt_object_put(env, obj);
2465 /* for capability renew ENOENT will be handled in
2467 if (body->valid & OBD_MD_FLOSSCAPA)
2472 info->mti_object = obj;
2481 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2483 struct req_capsule *pill = info->mti_pill;
2487 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2488 rc = mdt_body_unpack(info, flags);
2492 if (rc == 0 && (flags & HABEO_REFERO)) {
2493 struct mdt_device *mdt = info->mti_mdt;
2497 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2498 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2499 mdt->mdt_max_mdsize);
2500 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2501 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
2502 mdt->mdt_max_cookiesize);
2504 rc = req_capsule_server_pack(pill);
2509 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2511 struct md_device *next = m->mdt_child;
2513 return next->md_ops->mdo_init_capa_ctxt(env, next,
2514 m->mdt_opts.mo_mds_capa,
2515 m->mdt_capa_timeout,
2521 * Invoke handler for this request opc. Also do necessary preprocessing
2522 * (according to handler ->mh_flags), and post-processing (setting of
2523 * ->last_{xid,committed}).
2525 static int mdt_req_handle(struct mdt_thread_info *info,
2526 struct mdt_handler *h, struct ptlrpc_request *req)
2528 int rc, serious = 0;
2533 LASSERT(h->mh_act != NULL);
2534 LASSERT(h->mh_opc == lustre_msg_get_opc(req->rq_reqmsg));
2535 LASSERT(current->journal_info == NULL);
2538 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
2539 * to put same checks into handlers like mdt_close(), mdt_reint(),
2540 * etc., without talking to mdt authors first. Checking same thing
2541 * there again is useless and returning 0 error without packing reply
2542 * is buggy! Handlers either pack reply or return error.
2544 * We return 0 here and do not send any reply in order to emulate
2545 * network failure. Do not send any reply in case any of NET related
2546 * fail_id has occured.
2548 if (OBD_FAIL_CHECK_ORSET(h->mh_fail_id, OBD_FAIL_ONCE))
2552 flags = h->mh_flags;
2553 LASSERT(ergo(flags & (HABEO_CORPUS|HABEO_REFERO), h->mh_fmt != NULL));
2555 if (h->mh_fmt != NULL) {
2556 req_capsule_set(info->mti_pill, h->mh_fmt);
2557 rc = mdt_unpack_req_pack_rep(info, flags);
2560 if (rc == 0 && flags & MUTABOR &&
2561 req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
2562 /* should it be rq_status? */
2565 if (rc == 0 && flags & HABEO_CLAVIS) {
2566 struct ldlm_request *dlm_req;
2568 LASSERT(h->mh_fmt != NULL);
2570 dlm_req = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2571 if (dlm_req != NULL) {
2572 if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
2574 dlm_req->lock_desc.l_policy_data.\
2575 l_inodebits.bits == 0)) {
2577 * Lock without inodebits makes no sense and
2578 * will oops later in ldlm. If client miss to
2579 * set such bits, do not trigger ASSERTION.
2581 * For liblustre flock case, it maybe zero.
2585 if (info->mti_mdt->mdt_opts.mo_compat_resname)
2586 rc = mdt_lock_resname_compat(
2589 info->mti_dlm_req = dlm_req;
2596 /* capability setting changed via /proc, needs reinitialize ctxt */
2597 if (info->mti_mdt && info->mti_mdt->mdt_capa_conf) {
2598 mdt_init_capa_ctxt(info->mti_env, info->mti_mdt);
2599 info->mti_mdt->mdt_capa_conf = 0;
2602 if (likely(rc == 0)) {
2604 * Process request, there can be two types of rc:
2605 * 1) errors with msg unpack/pack, other failures outside the
2606 * operation itself. This is counted as serious errors;
2607 * 2) errors during fs operation, should be placed in rq_status
2610 rc = h->mh_act(info);
2612 !req->rq_no_reply && req->rq_reply_state == NULL) {
2613 DEBUG_REQ(D_ERROR, req, "MDT \"handler\" %s did not "
2614 "pack reply and returned 0 error\n",
2618 serious = is_serious(rc);
2619 rc = clear_serious(rc);
2623 req->rq_status = rc;
2626 * ELDLM_* codes which > 0 should be in rq_status only as well as
2627 * all non-serious errors.
2629 if (rc > 0 || !serious)
2632 LASSERT(current->journal_info == NULL);
2634 if (rc == 0 && (flags & HABEO_CLAVIS) &&
2635 info->mti_mdt->mdt_opts.mo_compat_resname) {
2636 struct ldlm_reply *dlmrep;
2638 dlmrep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
2640 rc = mdt_lock_reply_compat(info->mti_mdt, dlmrep);
2643 /* If we're DISCONNECTing, the mdt_export_data is already freed */
2644 if (likely(rc == 0 && req->rq_export && h->mh_opc != MDS_DISCONNECT))
2645 target_committed_to_req(req);
2647 if (unlikely(req_is_replay(req) &&
2648 lustre_msg_get_transno(req->rq_reqmsg) == 0)) {
2649 DEBUG_REQ(D_ERROR, req, "transno is 0 during REPLAY");
2653 target_send_reply(req, rc, info->mti_fail_id);
2657 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2659 lh->mlh_type = MDT_NUL_LOCK;
2660 lh->mlh_reg_lh.cookie = 0ull;
2661 lh->mlh_reg_mode = LCK_MINMODE;
2662 lh->mlh_pdo_lh.cookie = 0ull;
2663 lh->mlh_pdo_mode = LCK_MINMODE;
2666 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2668 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2669 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2673 * Initialize fields of struct mdt_thread_info. Other fields are left in
2674 * uninitialized state, because it's too expensive to zero out whole
2675 * mdt_thread_info (> 1K) on each request arrival.
2677 static void mdt_thread_info_init(struct ptlrpc_request *req,
2678 struct mdt_thread_info *info)
2681 struct md_capainfo *ci;
2683 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
2684 info->mti_pill = &req->rq_pill;
2687 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2688 mdt_lock_handle_init(&info->mti_lh[i]);
2690 /* mdt device: it can be NULL while CONNECT */
2691 if (req->rq_export) {
2692 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2693 info->mti_exp = req->rq_export;
2695 info->mti_mdt = NULL;
2696 info->mti_env = req->rq_svc_thread->t_env;
2697 ci = md_capainfo(info->mti_env);
2698 memset(ci, 0, sizeof *ci);
2699 if (req->rq_export) {
2700 if (exp_connect_rmtclient(req->rq_export))
2701 ci->mc_auth = LC_ID_CONVERT;
2702 else if (req->rq_export->exp_connect_flags &
2703 OBD_CONNECT_MDS_CAPA)
2704 ci->mc_auth = LC_ID_PLAIN;
2706 ci->mc_auth = LC_ID_NONE;
2709 info->mti_fail_id = OBD_FAIL_MDS_ALL_REPLY_NET;
2710 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2711 info->mti_mos = NULL;
2713 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2714 info->mti_body = NULL;
2715 info->mti_object = NULL;
2716 info->mti_dlm_req = NULL;
2717 info->mti_has_trans = 0;
2718 info->mti_no_need_trans = 0;
2719 info->mti_cross_ref = 0;
2720 info->mti_opdata = 0;
2722 /* To not check for split by default. */
2723 info->mti_spec.sp_ck_split = 0;
2724 info->mti_spec.no_create = 0;
2727 static void mdt_thread_info_fini(struct mdt_thread_info *info)
2731 req_capsule_fini(info->mti_pill);
2732 if (info->mti_object != NULL) {
2734 * freeing an object may lead to OSD level transaction, do not
2735 * let it mess with MDT. bz19385.
2737 info->mti_no_need_trans = 1;
2738 mdt_object_put(info->mti_env, info->mti_object);
2739 info->mti_object = NULL;
2741 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2742 mdt_lock_handle_fini(&info->mti_lh[i]);
2743 info->mti_env = NULL;
2746 static int mdt_filter_recovery_request(struct ptlrpc_request *req,
2747 struct obd_device *obd, int *process)
2749 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2750 case MDS_CONNECT: /* This will never get here, but for completeness. */
2751 case OST_CONNECT: /* This will never get here, but for completeness. */
2752 case MDS_DISCONNECT:
2753 case OST_DISCONNECT:
2758 case MDS_DONE_WRITING:
2759 case MDS_SYNC: /* used in unmounting */
2765 *process = target_queue_recovery_request(req, obd);
2769 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
2776 * Handle recovery. Return:
2777 * +1: continue request processing;
2778 * -ve: abort immediately with the given error code;
2779 * 0: send reply with error code in req->rq_status;
2781 static int mdt_recovery(struct mdt_thread_info *info)
2783 struct ptlrpc_request *req = mdt_info_req(info);
2784 struct obd_device *obd;
2788 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2791 case SEC_CTX_INIT_CONT:
2797 rc = mdt_handle_idmap(info);
2806 if (unlikely(!class_connected_export(req->rq_export))) {
2807 CERROR("operation %d on unconnected MDS from %s\n",
2808 lustre_msg_get_opc(req->rq_reqmsg),
2809 libcfs_id2str(req->rq_peer));
2810 /* FIXME: For CMD cleanup, when mds_B stop, the req from
2811 * mds_A will get -ENOTCONN(especially for ping req),
2812 * which will cause that mds_A deactive timeout, then when
2813 * mds_A cleanup, the cleanup process will be suspended since
2814 * deactive timeout is not zero.
2816 req->rq_status = -ENOTCONN;
2817 target_send_reply(req, -ENOTCONN, info->mti_fail_id);
2821 /* sanity check: if the xid matches, the request must be marked as a
2822 * resent or replayed */
2823 if (req_xid_is_last(req)) {
2824 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
2825 (MSG_RESENT | MSG_REPLAY))) {
2826 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches last_xid, "
2827 "expected REPLAY or RESENT flag (%x)", req->rq_xid,
2828 lustre_msg_get_flags(req->rq_reqmsg));
2830 req->rq_status = -ENOTCONN;
2835 /* else: note the opposite is not always true; a RESENT req after a
2836 * failover will usually not match the last_xid, since it was likely
2837 * never committed. A REPLAYed request will almost never match the
2838 * last xid, however it could for a committed, but still retained,
2841 obd = req->rq_export->exp_obd;
2843 /* Check for aborted recovery... */
2844 if (unlikely(obd->obd_recovering)) {
2847 DEBUG_REQ(D_INFO, req, "Got new replay");
2848 rc = mdt_filter_recovery_request(req, obd, &should_process);
2849 if (rc != 0 || !should_process)
2851 else if (should_process < 0) {
2852 req->rq_status = should_process;
2853 rc = ptlrpc_error(req);
2860 static int mdt_msg_check_version(struct lustre_msg *msg)
2864 switch (lustre_msg_get_opc(msg)) {
2866 case MDS_DISCONNECT:
2869 case SEC_CTX_INIT_CONT:
2871 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
2873 CERROR("bad opc %u version %08x, expecting %08x\n",
2874 lustre_msg_get_opc(msg),
2875 lustre_msg_get_version(msg),
2876 LUSTRE_OBD_VERSION);
2880 case MDS_GETATTR_NAME:
2887 case MDS_DONE_WRITING:
2894 case MDS_QUOTACHECK:
2900 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
2902 CERROR("bad opc %u version %08x, expecting %08x\n",
2903 lustre_msg_get_opc(msg),
2904 lustre_msg_get_version(msg),
2905 LUSTRE_MDS_VERSION);
2909 case LDLM_BL_CALLBACK:
2910 case LDLM_CP_CALLBACK:
2911 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
2913 CERROR("bad opc %u version %08x, expecting %08x\n",
2914 lustre_msg_get_opc(msg),
2915 lustre_msg_get_version(msg),
2916 LUSTRE_DLM_VERSION);
2918 case OBD_LOG_CANCEL:
2919 case LLOG_ORIGIN_HANDLE_CREATE:
2920 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
2921 case LLOG_ORIGIN_HANDLE_READ_HEADER:
2922 case LLOG_ORIGIN_HANDLE_CLOSE:
2923 case LLOG_ORIGIN_HANDLE_DESTROY:
2924 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
2926 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
2928 CERROR("bad opc %u version %08x, expecting %08x\n",
2929 lustre_msg_get_opc(msg),
2930 lustre_msg_get_version(msg),
2931 LUSTRE_LOG_VERSION);
2934 CERROR("MDS unknown opcode %d\n", lustre_msg_get_opc(msg));
2940 static int mdt_handle0(struct ptlrpc_request *req,
2941 struct mdt_thread_info *info,
2942 struct mdt_opc_slice *supported)
2944 struct mdt_handler *h;
2945 struct lustre_msg *msg;
2950 if (OBD_FAIL_CHECK_ORSET(OBD_FAIL_MDS_ALL_REQUEST_NET, OBD_FAIL_ONCE))
2953 LASSERT(current->journal_info == NULL);
2955 msg = req->rq_reqmsg;
2956 rc = mdt_msg_check_version(msg);
2957 if (likely(rc == 0)) {
2958 rc = mdt_recovery(info);
2959 if (likely(rc == +1)) {
2960 h = mdt_handler_find(lustre_msg_get_opc(msg),
2962 if (likely(h != NULL)) {
2963 rc = mdt_req_handle(info, h, req);
2965 CERROR("The unsupported opc: 0x%x\n",
2966 lustre_msg_get_opc(msg) );
2967 req->rq_status = -ENOTSUPP;
2968 rc = ptlrpc_error(req);
2973 CERROR(LUSTRE_MDT_NAME" drops mal-formed request\n");
2978 * MDT handler function called by ptlrpc service thread when request comes.
2980 * XXX common "target" functionality should be factored into separate module
2981 * shared by mdt, ost and stand-alone services like fld.
2983 static int mdt_handle_common(struct ptlrpc_request *req,
2984 struct mdt_opc_slice *supported)
2987 struct mdt_thread_info *info;
2991 env = req->rq_svc_thread->t_env;
2992 LASSERT(env != NULL);
2993 LASSERT(env->le_ses != NULL);
2994 LASSERT(env->le_ctx.lc_thread == req->rq_svc_thread);
2995 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
2996 LASSERT(info != NULL);
2998 mdt_thread_info_init(req, info);
3000 rc = mdt_handle0(req, info, supported);
3002 mdt_thread_info_fini(info);
3007 * This is called from recovery code as handler of _all_ RPC types, FLD and SEQ
3010 int mdt_recovery_handle(struct ptlrpc_request *req)
3015 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3017 rc = mdt_handle_common(req, mdt_fld_handlers);
3020 rc = mdt_handle_common(req, mdt_seq_handlers);
3023 rc = mdt_handle_common(req, mdt_regular_handlers);
3030 static int mdt_regular_handle(struct ptlrpc_request *req)
3032 return mdt_handle_common(req, mdt_regular_handlers);
3035 static int mdt_readpage_handle(struct ptlrpc_request *req)
3037 return mdt_handle_common(req, mdt_readpage_handlers);
3040 static int mdt_xmds_handle(struct ptlrpc_request *req)
3042 return mdt_handle_common(req, mdt_xmds_handlers);
3045 static int mdt_mdsc_handle(struct ptlrpc_request *req)
3047 return mdt_handle_common(req, mdt_seq_handlers);
3050 static int mdt_mdss_handle(struct ptlrpc_request *req)
3052 return mdt_handle_common(req, mdt_seq_handlers);
3055 static int mdt_dtss_handle(struct ptlrpc_request *req)
3057 return mdt_handle_common(req, mdt_seq_handlers);
3060 static int mdt_fld_handle(struct ptlrpc_request *req)
3062 return mdt_handle_common(req, mdt_fld_handlers);
3078 static int mdt_intent_getattr(enum mdt_it_code opcode,
3079 struct mdt_thread_info *info,
3080 struct ldlm_lock **,
3082 static int mdt_intent_reint(enum mdt_it_code opcode,
3083 struct mdt_thread_info *info,
3084 struct ldlm_lock **,
3087 static struct mdt_it_flavor {
3088 const struct req_format *it_fmt;
3090 int (*it_act)(enum mdt_it_code ,
3091 struct mdt_thread_info *,
3092 struct ldlm_lock **,
3095 } mdt_it_flavor[] = {
3097 .it_fmt = &RQF_LDLM_INTENT,
3098 /*.it_flags = HABEO_REFERO,*/
3100 .it_act = mdt_intent_reint,
3101 .it_reint = REINT_OPEN
3104 .it_fmt = &RQF_LDLM_INTENT,
3105 .it_flags = MUTABOR,
3106 .it_act = mdt_intent_reint,
3107 .it_reint = REINT_OPEN
3110 .it_fmt = &RQF_LDLM_INTENT,
3111 .it_flags = MUTABOR,
3112 .it_act = mdt_intent_reint,
3113 .it_reint = REINT_CREATE
3115 [MDT_IT_GETATTR] = {
3116 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3117 .it_flags = HABEO_REFERO,
3118 .it_act = mdt_intent_getattr
3120 [MDT_IT_READDIR] = {
3126 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3127 .it_flags = HABEO_REFERO,
3128 .it_act = mdt_intent_getattr
3131 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
3132 .it_flags = MUTABOR,
3134 .it_reint = REINT_UNLINK
3138 .it_flags = MUTABOR,
3141 [MDT_IT_GETXATTR] = {
3148 int mdt_intent_lock_replace(struct mdt_thread_info *info,
3149 struct ldlm_lock **lockp,
3150 struct ldlm_lock *new_lock,
3151 struct mdt_lock_handle *lh,
3154 struct ptlrpc_request *req = mdt_info_req(info);
3155 struct ldlm_lock *lock = *lockp;
3158 * Get new lock only for cases when possible resent did not find any
3161 if (new_lock == NULL)
3162 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3164 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3165 lh->mlh_reg_lh.cookie = 0;
3169 LASSERTF(new_lock != NULL,
3170 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
3173 * If we've already given this lock to a client once, then we should
3174 * have no readers or writers. Otherwise, we should have one reader
3175 * _or_ writer ref (which will be zeroed below) before returning the
3178 if (new_lock->l_export == req->rq_export) {
3179 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3181 LASSERT(new_lock->l_export == NULL);
3182 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3187 if (new_lock->l_export == req->rq_export) {
3189 * Already gave this to the client, which means that we
3190 * reconstructed a reply.
3192 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3194 lh->mlh_reg_lh.cookie = 0;
3195 RETURN(ELDLM_LOCK_REPLACED);
3199 * Fixup the lock to be given to the client.
3201 lock_res_and_lock(new_lock);
3202 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3203 * possible blocking AST. */
3204 while (new_lock->l_readers > 0) {
3205 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3206 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3207 new_lock->l_readers--;
3209 while (new_lock->l_writers > 0) {
3210 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3211 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3212 new_lock->l_writers--;
3215 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3216 new_lock->l_blocking_ast = lock->l_blocking_ast;
3217 new_lock->l_completion_ast = lock->l_completion_ast;
3218 new_lock->l_remote_handle = lock->l_remote_handle;
3219 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3221 unlock_res_and_lock(new_lock);
3223 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3224 &new_lock->l_remote_handle,
3225 &new_lock->l_exp_hash);
3227 LDLM_LOCK_RELEASE(new_lock);
3228 lh->mlh_reg_lh.cookie = 0;
3230 RETURN(ELDLM_LOCK_REPLACED);
3233 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3234 struct ldlm_lock *new_lock,
3235 struct ldlm_lock **old_lock,
3236 struct mdt_lock_handle *lh)
3238 struct ptlrpc_request *req = mdt_info_req(info);
3239 struct obd_export *exp = req->rq_export;
3240 struct lustre_handle remote_hdl;
3241 struct ldlm_request *dlmreq;
3242 struct ldlm_lock *lock;