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 2008 Sun Microsystems, Inc. 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 /*XXX should pack the reply body according to lu_valid*/
406 b->valid |= OBD_MD_FLCTIME | OBD_MD_FLUID |
407 OBD_MD_FLGID | OBD_MD_FLTYPE |
408 OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLFLAGS |
409 OBD_MD_FLATIME | OBD_MD_FLMTIME ;
411 if (!S_ISREG(attr->la_mode))
412 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
414 /* if no object is allocated on osts, the size on mds is valid. b=22272 */
415 if (ma->ma_lmm_size == 0)
416 b->valid |= OBD_MD_FLSIZE;
418 b->atime = attr->la_atime;
419 b->mtime = attr->la_mtime;
420 b->ctime = attr->la_ctime;
421 b->mode = attr->la_mode;
422 b->size = attr->la_size;
423 b->blocks = attr->la_blocks;
424 b->uid = attr->la_uid;
425 b->gid = attr->la_gid;
426 b->flags = attr->la_flags;
427 b->nlink = attr->la_nlink;
428 b->rdev = attr->la_rdev;
432 b->valid |= OBD_MD_FLID;
434 /* FIXME: these should be fixed when new igif ready.*/
435 b->ino = fid_oid(fid); /* 1.6 compatibility */
436 b->generation = fid_ver(fid); /* 1.6 compatibility */
437 b->valid |= OBD_MD_FLGENER; /* 1.6 compatibility */
439 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, size="LPU64"\n",
440 PFID(fid), b->nlink, b->mode, b->size);
444 mdt_body_reverse_idmap(info, b);
447 static inline int mdt_body_has_lov(const struct lu_attr *la,
448 const struct mdt_body *body)
450 return ((S_ISREG(la->la_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
451 (S_ISDIR(la->la_mode) && (body->valid & OBD_MD_FLDIREA )) );
454 static int mdt_getattr_internal(struct mdt_thread_info *info,
455 struct mdt_object *o, int ma_need)
457 struct md_object *next = mdt_object_child(o);
458 const struct mdt_body *reqbody = info->mti_body;
459 struct ptlrpc_request *req = mdt_info_req(info);
460 struct md_attr *ma = &info->mti_attr;
461 struct lu_attr *la = &ma->ma_attr;
462 struct req_capsule *pill = info->mti_pill;
463 const struct lu_env *env = info->mti_env;
464 struct mdt_body *repbody;
465 struct lu_buf *buffer = &info->mti_buf;
469 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
470 RETURN(err_serious(-ENOMEM));
472 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
476 rc = mdt_object_exists(o);
478 /* This object is located on remote node.*/
479 repbody->fid1 = *mdt_object_fid(o);
480 repbody->valid = OBD_MD_FLID | OBD_MD_MDS;
484 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
485 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD, RCL_SERVER);
487 /* If it is dir object and client require MEA, then we got MEA */
488 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
489 reqbody->valid & OBD_MD_MEA) {
490 /* Assumption: MDT_MD size is enough for lmv size. */
491 ma->ma_lmv = buffer->lb_buf;
492 ma->ma_lmv_size = buffer->lb_len;
493 ma->ma_need = MA_LMV | MA_INODE;
495 ma->ma_lmm = buffer->lb_buf;
496 ma->ma_lmm_size = buffer->lb_len;
497 ma->ma_need = MA_LOV | MA_INODE;
500 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
501 reqbody->valid & OBD_MD_FLDIREA &&
502 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
503 /* get default stripe info for this dir. */
504 ma->ma_need |= MA_LOV_DEF;
506 ma->ma_need |= ma_need;
507 if (ma->ma_need & MA_SOM)
508 ma->ma_som = &info->mti_u.som.data;
510 rc = mo_attr_get(env, next, ma);
512 CERROR("getattr error for "DFID": %d\n",
513 PFID(mdt_object_fid(o)), rc);
517 if (likely(ma->ma_valid & MA_INODE))
518 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
522 if (mdt_body_has_lov(la, reqbody)) {
523 if (ma->ma_valid & MA_LOV) {
524 LASSERT(ma->ma_lmm_size);
525 mdt_dump_lmm(D_INFO, ma->ma_lmm);
526 repbody->eadatasize = ma->ma_lmm_size;
527 if (S_ISDIR(la->la_mode))
528 repbody->valid |= OBD_MD_FLDIREA;
530 repbody->valid |= OBD_MD_FLEASIZE;
532 if (ma->ma_valid & MA_LMV) {
533 LASSERT(S_ISDIR(la->la_mode));
534 repbody->eadatasize = ma->ma_lmv_size;
535 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
537 if (!(ma->ma_valid & MA_LOV) && !(ma->ma_valid & MA_LMV)) {
538 repbody->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
540 } else if (S_ISLNK(la->la_mode) &&
541 reqbody->valid & OBD_MD_LINKNAME) {
542 buffer->lb_buf = ma->ma_lmm;
543 buffer->lb_len = reqbody->eadatasize;
544 rc = mo_readlink(env, next, buffer);
545 if (unlikely(rc <= 0)) {
546 CERROR("readlink failed: %d\n", rc);
549 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READLINK_EPROTO))
551 repbody->valid |= OBD_MD_LINKNAME;
552 repbody->eadatasize = rc;
554 ((char*)ma->ma_lmm)[rc - 1] = 0;
555 CDEBUG(D_INODE, "symlink dest %s, len = %d\n",
556 (char*)ma->ma_lmm, rc);
561 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
562 repbody->max_cookiesize = info->mti_mdt->mdt_max_cookiesize;
563 repbody->max_mdsize = info->mti_mdt->mdt_max_mdsize;
564 repbody->valid |= OBD_MD_FLMODEASIZE;
565 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
566 "MAX_COOKIE to : %d:%d\n", repbody->max_mdsize,
567 repbody->max_cookiesize);
570 if (exp_connect_rmtclient(info->mti_exp) &&
571 reqbody->valid & OBD_MD_FLRMTPERM) {
572 void *buf = req_capsule_server_get(pill, &RMF_ACL);
574 /* mdt_getattr_lock only */
575 rc = mdt_pack_remote_perm(info, o, buf);
577 repbody->valid &= ~OBD_MD_FLRMTPERM;
578 repbody->aclsize = 0;
581 repbody->valid |= OBD_MD_FLRMTPERM;
582 repbody->aclsize = sizeof(struct mdt_remote_perm);
585 #ifdef CONFIG_FS_POSIX_ACL
586 else if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
587 (reqbody->valid & OBD_MD_FLACL)) {
588 buffer->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
589 buffer->lb_len = req_capsule_get_size(pill,
590 &RMF_ACL, RCL_SERVER);
591 if (buffer->lb_len > 0) {
592 rc = mo_xattr_get(env, next, buffer,
593 XATTR_NAME_ACL_ACCESS);
595 if (rc == -ENODATA) {
596 repbody->aclsize = 0;
597 repbody->valid |= OBD_MD_FLACL;
599 } else if (rc == -EOPNOTSUPP) {
602 CERROR("got acl size: %d\n", rc);
605 repbody->aclsize = rc;
606 repbody->valid |= OBD_MD_FLACL;
613 if (reqbody->valid & OBD_MD_FLMDSCAPA &&
614 info->mti_mdt->mdt_opts.mo_mds_capa &&
615 info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) {
616 struct lustre_capa *capa;
618 capa = req_capsule_server_get(pill, &RMF_CAPA1);
620 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
621 rc = mo_capa_get(env, next, capa, 0);
624 repbody->valid |= OBD_MD_FLMDSCAPA;
629 static int mdt_renew_capa(struct mdt_thread_info *info)
631 struct mdt_object *obj = info->mti_object;
632 struct mdt_body *body;
633 struct lustre_capa *capa, *c;
637 /* if object doesn't exist, or server has disabled capability,
638 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
641 if (!obj || !info->mti_mdt->mdt_opts.mo_oss_capa ||
642 !(info->mti_exp->exp_connect_flags & OBD_CONNECT_OSS_CAPA))
645 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
646 LASSERT(body != NULL);
648 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
651 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
655 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
657 body->valid |= OBD_MD_FLOSSCAPA;
661 static int mdt_getattr(struct mdt_thread_info *info)
663 struct mdt_object *obj = info->mti_object;
664 struct req_capsule *pill = info->mti_pill;
665 struct mdt_body *reqbody;
666 struct mdt_body *repbody;
672 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
675 if (reqbody->valid & OBD_MD_FLOSSCAPA) {
676 rc = req_capsule_server_pack(pill);
678 RETURN(err_serious(rc));
679 rc = mdt_renew_capa(info);
680 GOTO(out_shrink, rc);
683 LASSERT(obj != NULL);
684 LASSERT(lu_object_assert_exists(&obj->mot_obj.mo_lu));
686 mode = lu_object_attr(&obj->mot_obj.mo_lu);
687 if (S_ISLNK(mode) && (reqbody->valid & OBD_MD_LINKNAME) &&
688 (reqbody->eadatasize > info->mti_mdt->mdt_max_mdsize))
689 md_size = reqbody->eadatasize;
691 md_size = info->mti_mdt->mdt_max_mdsize;
693 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, md_size);
695 rc = req_capsule_server_pack(pill);
696 if (unlikely(rc != 0))
697 RETURN(err_serious(rc));
699 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
700 LASSERT(repbody != NULL);
701 repbody->eadatasize = 0;
702 repbody->aclsize = 0;
704 if (reqbody->valid & OBD_MD_FLRMTPERM)
705 rc = mdt_init_ucred(info, reqbody);
707 rc = mdt_check_ucred(info);
709 GOTO(out_shrink, rc);
711 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
712 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
715 * Don't check capability at all, because rename might getattr for
716 * remote obj, and at that time no capability is available.
718 mdt_set_capainfo(info, 1, &reqbody->fid1, BYPASS_CAPA);
719 rc = mdt_getattr_internal(info, obj, 0);
720 if (reqbody->valid & OBD_MD_FLRMTPERM)
721 mdt_exit_ucred(info);
724 mdt_shrink_reply(info);
728 static int mdt_is_subdir(struct mdt_thread_info *info)
730 struct mdt_object *o = info->mti_object;
731 struct req_capsule *pill = info->mti_pill;
732 const struct mdt_body *body = info->mti_body;
733 struct mdt_body *repbody;
739 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
742 * We save last checked parent fid to @repbody->fid1 for remote
745 LASSERT(fid_is_sane(&body->fid2));
746 LASSERT(mdt_object_exists(o) > 0);
747 rc = mdo_is_subdir(info->mti_env, mdt_object_child(o),
748 &body->fid2, &repbody->fid1);
749 if (rc == 0 || rc == -EREMOTE)
750 repbody->valid |= OBD_MD_FLID;
755 static int mdt_raw_lookup(struct mdt_thread_info *info,
756 struct mdt_object *parent,
757 const struct lu_name *lname,
758 struct ldlm_reply *ldlm_rep)
760 struct md_object *next = mdt_object_child(info->mti_object);
761 const struct mdt_body *reqbody = info->mti_body;
762 struct lu_fid *child_fid = &info->mti_tmp_fid1;
763 struct mdt_body *repbody;
767 if (reqbody->valid != OBD_MD_FLID)
770 LASSERT(!info->mti_cross_ref);
772 /* Only got the fid of this obj by name */
773 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
776 /* XXX is raw_lookup possible as intent operation? */
779 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
782 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
784 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
787 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
788 repbody->fid1 = *child_fid;
789 repbody->valid = OBD_MD_FLID;
795 * UPDATE lock should be taken against parent, and be release before exit;
796 * child_bits lock should be taken against child, and be returned back:
797 * (1)normal request should release the child lock;
798 * (2)intent request will grant the lock to client.
800 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
801 struct mdt_lock_handle *lhc,
803 struct ldlm_reply *ldlm_rep)
805 struct ptlrpc_request *req = mdt_info_req(info);
806 struct mdt_body *reqbody = NULL;
807 struct mdt_object *parent = info->mti_object;
808 struct mdt_object *child;
809 struct md_object *next = mdt_object_child(parent);
810 struct lu_fid *child_fid = &info->mti_tmp_fid1;
811 struct lu_name *lname = NULL;
812 const char *name = NULL;
814 struct mdt_lock_handle *lhp;
815 struct ldlm_lock *lock;
816 struct ldlm_res_id *res_id;
823 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
824 LASSERT(ergo(is_resent,
825 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
827 LASSERT(parent != NULL);
828 name = req_capsule_client_get(info->mti_pill, &RMF_NAME);
830 RETURN(err_serious(-EFAULT));
832 namelen = req_capsule_get_size(info->mti_pill, &RMF_NAME,
834 if (!info->mti_cross_ref) {
836 * XXX: Check for "namelen == 0" is for getattr by fid
837 * (OBD_CONNECT_ATTRFID), otherwise do not allow empty name,
838 * that is the name must contain at least one character and
839 * the terminating '\0'
842 reqbody = req_capsule_client_get(info->mti_pill,
844 LASSERT(fid_is_sane(&reqbody->fid2));
847 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
849 PFID(mdt_object_fid(parent)), PFID(&reqbody->fid2),
852 lname = mdt_name(info->mti_env, (char *)name, namelen);
853 CDEBUG(D_INODE, "getattr with lock for "DFID"/%s, "
854 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
858 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
860 rc = mdt_object_exists(parent);
861 if (unlikely(rc == 0)) {
862 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
863 &parent->mot_obj.mo_lu,
864 "Parent doesn't exist!\n");
866 } else if (!info->mti_cross_ref) {
867 LASSERTF(rc > 0, "Parent "DFID" is on remote server\n",
868 PFID(mdt_object_fid(parent)));
871 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
879 if (info->mti_cross_ref) {
880 /* Only getattr on the child. Parent is on another node. */
881 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
883 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
884 "ldlm_rep=%p\n", PFID(mdt_object_fid(child)), ldlm_rep);
887 /* Do not take lock for resent case. */
888 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
889 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
890 lhc->mlh_reg_lh.cookie);
891 LASSERT(fid_res_name_eq(mdt_object_fid(child),
892 &lock->l_resource->lr_name));
896 mdt_lock_handle_init(lhc);
897 mdt_lock_reg_init(lhc, LCK_PR);
900 * Object's name is on another MDS, no lookup lock is
901 * needed here but update is.
903 child_bits &= ~MDS_INODELOCK_LOOKUP;
904 child_bits |= MDS_INODELOCK_UPDATE;
906 rc = mdt_object_lock(info, child, lhc, child_bits,
910 /* Finally, we can get attr for child. */
911 mdt_set_capainfo(info, 0, mdt_object_fid(child),
913 rc = mdt_getattr_internal(info, child, 0);
914 if (unlikely(rc != 0))
915 mdt_object_unlock(info, child, lhc, 1);
920 /* step 1: lock parent */
921 lhp = &info->mti_lh[MDT_LH_PARENT];
922 mdt_lock_pdo_init(lhp, LCK_PR, name, namelen);
923 rc = mdt_object_lock(info, parent, lhp, MDS_INODELOCK_UPDATE,
926 if (unlikely(rc != 0))
930 /* step 2: lookup child's fid by name */
931 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
936 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
937 GOTO(out_parent, rc);
939 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
941 *child_fid = reqbody->fid2;
942 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
946 *step 3: find the child object by fid & lock it.
947 * regardless if it is local or remote.
949 child = mdt_object_find(info->mti_env, info->mti_mdt, child_fid);
951 if (unlikely(IS_ERR(child)))
952 GOTO(out_parent, rc = PTR_ERR(child));
954 /* Do not take lock for resent case. */
955 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
956 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
957 lhc->mlh_reg_lh.cookie);
959 res_id = &lock->l_resource->lr_name;
960 if (!fid_res_name_eq(mdt_object_fid(child),
961 &lock->l_resource->lr_name)) {
962 LASSERTF(fid_res_name_eq(mdt_object_fid(parent),
963 &lock->l_resource->lr_name),
964 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
965 (unsigned long)res_id->name[0],
966 (unsigned long)res_id->name[1],
967 (unsigned long)res_id->name[2],
968 PFID(mdt_object_fid(parent)));
969 CWARN("Although resent, but still not get child lock"
970 "parent:"DFID" child:"DFID"\n",
971 PFID(mdt_object_fid(parent)),
972 PFID(mdt_object_fid(child)));
973 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
982 ma = &info->mti_attr;
984 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RESEND, obd_timeout*2);
985 mdt_lock_handle_init(lhc);
986 mdt_lock_reg_init(lhc, LCK_PR);
988 if (mdt_object_exists(child) == 0) {
989 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
990 &child->mot_obj.mo_lu,
991 "Object doesn't exist!\n");
992 GOTO(out_child, rc = -ESTALE);
996 ma->ma_need = MA_INODE;
997 rc = mo_attr_get(info->mti_env, next, ma);
998 if (unlikely(rc != 0))
1001 /* If the file has not been changed for some time, we return
1002 * not only a LOOKUP lock, but also an UPDATE lock and this
1003 * might save us RPC on later STAT. For directories, it also
1004 * let negative dentry starts working for this dir. */
1005 if (ma->ma_valid & MA_INODE &&
1006 ma->ma_attr.la_valid & LA_CTIME &&
1007 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
1008 ma->ma_attr.la_ctime < cfs_time_current_sec())
1009 child_bits |= MDS_INODELOCK_UPDATE;
1011 rc = mdt_object_lock(info, child, lhc, child_bits,
1014 if (unlikely(rc != 0))
1015 GOTO(out_child, rc);
1018 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1019 /* Get MA_SOM attributes if update lock is given. */
1021 lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_UPDATE &&
1022 S_ISREG(lu_object_attr(&mdt_object_child(child)->mo_lu)))
1025 /* finally, we can get attr for child. */
1026 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1027 rc = mdt_getattr_internal(info, child, ma_need);
1028 if (unlikely(rc != 0)) {
1029 mdt_object_unlock(info, child, lhc, 1);
1031 /* Debugging code. */
1032 res_id = &lock->l_resource->lr_name;
1033 LDLM_DEBUG(lock, "Returning lock to client");
1034 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
1035 &lock->l_resource->lr_name),
1036 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
1037 (unsigned long)res_id->name[0],
1038 (unsigned long)res_id->name[1],
1039 (unsigned long)res_id->name[2],
1040 PFID(mdt_object_fid(child)));
1041 mdt_pack_size2body(info, child);
1044 LDLM_LOCK_PUT(lock);
1048 mdt_object_put(info->mti_env, child);
1050 mdt_object_unlock(info, parent, lhp, 1);
1054 /* normal handler: should release the child lock */
1055 static int mdt_getattr_name(struct mdt_thread_info *info)
1057 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1058 struct mdt_body *reqbody;
1059 struct mdt_body *repbody;
1063 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1064 LASSERT(reqbody != NULL);
1065 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1066 LASSERT(repbody != NULL);
1068 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
1069 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1070 repbody->eadatasize = 0;
1071 repbody->aclsize = 0;
1073 rc = mdt_init_ucred(info, reqbody);
1075 GOTO(out_shrink, rc);
1077 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1078 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1079 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1080 lhc->mlh_reg_lh.cookie = 0;
1082 mdt_exit_ucred(info);
1085 mdt_shrink_reply(info);
1089 static const struct lu_device_operations mdt_lu_ops;
1091 static int lu_device_is_mdt(struct lu_device *d)
1093 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &mdt_lu_ops);
1096 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1097 void *karg, void *uarg);
1099 static int mdt_set_info(struct mdt_thread_info *info)
1101 struct ptlrpc_request *req = mdt_info_req(info);
1104 int keylen, vallen, rc = 0;
1107 rc = req_capsule_server_pack(info->mti_pill);
1111 key = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_KEY);
1113 DEBUG_REQ(D_HA, req, "no set_info key");
1117 keylen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_KEY,
1120 val = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_VAL);
1122 DEBUG_REQ(D_HA, req, "no set_info val");
1126 vallen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_VAL,
1129 /* Swab any part of val you need to here */
1130 if (KEY_IS(KEY_READ_ONLY)) {
1132 lustre_msg_set_status(req->rq_repmsg, 0);
1134 cfs_spin_lock(&req->rq_export->exp_lock);
1136 req->rq_export->exp_connect_flags |= OBD_CONNECT_RDONLY;
1138 req->rq_export->exp_connect_flags &=~OBD_CONNECT_RDONLY;
1139 cfs_spin_unlock(&req->rq_export->exp_lock);
1141 } else if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1142 struct changelog_setinfo *cs =
1143 (struct changelog_setinfo *)val;
1144 if (vallen != sizeof(*cs)) {
1145 CERROR("Bad changelog_clear setinfo size %d\n", vallen);
1148 if (ptlrpc_req_need_swab(req)) {
1149 __swab64s(&cs->cs_recno);
1150 __swab32s(&cs->cs_id);
1153 rc = mdt_iocontrol(OBD_IOC_CHANGELOG_CLEAR, info->mti_exp,
1155 lustre_msg_set_status(req->rq_repmsg, rc);
1163 static int mdt_connect(struct mdt_thread_info *info)
1166 struct ptlrpc_request *req;
1168 req = mdt_info_req(info);
1169 rc = target_handle_connect(req);
1171 LASSERT(req->rq_export != NULL);
1172 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
1173 rc = mdt_init_sec_level(info);
1175 rc = mdt_init_idmap(info);
1177 obd_disconnect(class_export_get(req->rq_export));
1179 rc = err_serious(rc);
1184 static int mdt_disconnect(struct mdt_thread_info *info)
1189 rc = target_handle_disconnect(mdt_info_req(info));
1191 rc = err_serious(rc);
1195 static int mdt_sendpage(struct mdt_thread_info *info,
1196 struct lu_rdpg *rdpg)
1198 struct ptlrpc_request *req = mdt_info_req(info);
1199 struct obd_export *exp = req->rq_export;
1200 struct ptlrpc_bulk_desc *desc;
1201 struct l_wait_info *lwi = &info->mti_u.rdpg.mti_wait_info;
1209 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, BULK_PUT_SOURCE,
1214 for (i = 0, tmpcount = rdpg->rp_count;
1215 i < rdpg->rp_npages; i++, tmpcount -= tmpsize) {
1216 tmpsize = min_t(int, tmpcount, CFS_PAGE_SIZE);
1217 ptlrpc_prep_bulk_page(desc, rdpg->rp_pages[i], 0, tmpsize);
1220 LASSERT(desc->bd_nob == rdpg->rp_count);
1221 rc = sptlrpc_svc_wrap_bulk(req, desc);
1223 GOTO(free_desc, rc);
1225 rc = ptlrpc_start_bulk_transfer(desc);
1227 GOTO(free_desc, rc);
1229 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1230 GOTO(abort_bulk, rc = 0);
1232 timeout = (int) req->rq_deadline - cfs_time_current_sec();
1234 CERROR("Req deadline already passed %lu (now: %lu)\n",
1235 req->rq_deadline, cfs_time_current_sec());
1236 *lwi = LWI_TIMEOUT_INTERVAL(cfs_time_seconds(max(timeout, 1)),
1237 cfs_time_seconds(1), NULL, NULL);
1238 rc = l_wait_event(desc->bd_waitq, !ptlrpc_server_bulk_active(desc) ||
1239 exp->exp_failed || exp->exp_abort_active_req, lwi);
1240 LASSERT (rc == 0 || rc == -ETIMEDOUT);
1243 if (desc->bd_success &&
1244 desc->bd_nob_transferred == rdpg->rp_count)
1245 GOTO(free_desc, rc);
1248 if (exp->exp_abort_active_req || exp->exp_failed)
1249 GOTO(abort_bulk, rc);
1252 DEBUG_REQ(D_ERROR, req, "bulk failed: %s %d(%d), evicting %s@%s",
1253 (rc == -ETIMEDOUT) ? "timeout" : "network error",
1254 desc->bd_nob_transferred, rdpg->rp_count,
1255 exp->exp_client_uuid.uuid,
1256 exp->exp_connection->c_remote_uuid.uuid);
1258 class_fail_export(exp);
1262 ptlrpc_abort_bulk(desc);
1264 ptlrpc_free_bulk(desc);
1268 #ifdef HAVE_SPLIT_SUPPORT
1270 * Retrieve dir entry from the page and insert it to the slave object, actually,
1271 * this should be in osd layer, but since it will not in the final product, so
1272 * just do it here and do not define more moo api anymore for this.
1274 static int mdt_write_dir_page(struct mdt_thread_info *info, struct page *page,
1277 struct mdt_object *object = info->mti_object;
1278 struct lu_fid *lf = &info->mti_tmp_fid2;
1279 struct md_attr *ma = &info->mti_attr;
1280 struct lu_dirpage *dp;
1281 struct lu_dirent *ent;
1282 int rc = 0, offset = 0;
1285 /* Make sure we have at least one entry. */
1290 * Disable trans for this name insert, since it will include many trans
1293 info->mti_no_need_trans = 1;
1295 * When write_dir_page, no need update parent's ctime,
1296 * and no permission check for name_insert.
1298 ma->ma_attr.la_ctime = 0;
1299 ma->ma_attr.la_valid = LA_MODE;
1300 ma->ma_valid = MA_INODE;
1303 dp = page_address(page);
1304 offset = (int)((__u32)lu_dirent_start(dp) - (__u32)dp);
1306 for (ent = lu_dirent_start(dp); ent != NULL;
1307 ent = lu_dirent_next(ent)) {
1308 struct lu_name *lname;
1311 if (le16_to_cpu(ent->lde_namelen) == 0)
1314 fid_le_to_cpu(lf, &ent->lde_fid);
1315 if (le64_to_cpu(ent->lde_hash) & MAX_HASH_HIGHEST_BIT)
1316 ma->ma_attr.la_mode = S_IFDIR;
1318 ma->ma_attr.la_mode = 0;
1319 OBD_ALLOC(name, le16_to_cpu(ent->lde_namelen) + 1);
1321 GOTO(out, rc = -ENOMEM);
1323 memcpy(name, ent->lde_name, le16_to_cpu(ent->lde_namelen));
1324 lname = mdt_name(info->mti_env, name,
1325 le16_to_cpu(ent->lde_namelen));
1326 ma->ma_attr_flags |= (MDS_PERM_BYPASS | MDS_QUOTA_IGNORE);
1327 rc = mdo_name_insert(info->mti_env,
1328 md_object_next(&object->mot_obj),
1330 OBD_FREE(name, le16_to_cpu(ent->lde_namelen) + 1);
1332 CERROR("Can't insert %*.*s, rc %d\n",
1333 le16_to_cpu(ent->lde_namelen),
1334 le16_to_cpu(ent->lde_namelen),
1339 offset += lu_dirent_size(ent);
1349 static int mdt_bulk_timeout(void *data)
1353 CERROR("mdt bulk transfer timeout \n");
1358 static int mdt_writepage(struct mdt_thread_info *info)
1360 struct ptlrpc_request *req = mdt_info_req(info);
1361 struct mdt_body *reqbody;
1362 struct l_wait_info *lwi;
1363 struct ptlrpc_bulk_desc *desc;
1369 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1370 if (reqbody == NULL)
1371 RETURN(err_serious(-EFAULT));
1373 desc = ptlrpc_prep_bulk_exp(req, 1, BULK_GET_SINK, MDS_BULK_PORTAL);
1375 RETURN(err_serious(-ENOMEM));
1377 /* allocate the page for the desc */
1378 page = cfs_alloc_page(CFS_ALLOC_STD);
1380 GOTO(desc_cleanup, rc = -ENOMEM);
1382 CDEBUG(D_INFO, "Received page offset %d size %d \n",
1383 (int)reqbody->size, (int)reqbody->nlink);
1385 ptlrpc_prep_bulk_page(desc, page, (int)reqbody->size,
1386 (int)reqbody->nlink);
1388 rc = sptlrpc_svc_prep_bulk(req, desc);
1390 GOTO(cleanup_page, rc);
1392 * Check if client was evicted while we were doing i/o before touching
1397 GOTO(cleanup_page, rc = -ENOMEM);
1399 if (desc->bd_export->exp_failed)
1402 rc = ptlrpc_start_bulk_transfer (desc);
1404 *lwi = LWI_TIMEOUT_INTERVAL(obd_timeout * CFS_HZ / 4, CFS_HZ,
1405 mdt_bulk_timeout, desc);
1406 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc) ||
1407 desc->bd_export->exp_failed, lwi);
1408 LASSERT(rc == 0 || rc == -ETIMEDOUT);
1409 if (rc == -ETIMEDOUT) {
1410 DEBUG_REQ(D_ERROR, req, "timeout on bulk GET");
1411 ptlrpc_abort_bulk(desc);
1412 } else if (desc->bd_export->exp_failed) {
1413 DEBUG_REQ(D_ERROR, req, "Eviction on bulk GET");
1415 ptlrpc_abort_bulk(desc);
1416 } else if (!desc->bd_success ||
1417 desc->bd_nob_transferred != desc->bd_nob) {
1418 DEBUG_REQ(D_ERROR, req, "%s bulk GET %d(%d)",
1420 "truncated" : "network error on",
1421 desc->bd_nob_transferred, desc->bd_nob);
1422 /* XXX should this be a different errno? */
1426 DEBUG_REQ(D_ERROR, req, "ptlrpc_bulk_get failed: rc %d", rc);
1429 GOTO(cleanup_lwi, rc);
1430 rc = mdt_write_dir_page(info, page, reqbody->nlink);
1435 cfs_free_page(page);
1437 ptlrpc_free_bulk(desc);
1442 static int mdt_readpage(struct mdt_thread_info *info)
1444 struct mdt_object *object = info->mti_object;
1445 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1446 struct mdt_body *reqbody;
1447 struct mdt_body *repbody;
1452 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1453 RETURN(err_serious(-ENOMEM));
1455 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1456 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1457 if (reqbody == NULL || repbody == NULL)
1458 RETURN(err_serious(-EFAULT));
1461 * prepare @rdpg before calling lower layers and transfer itself. Here
1462 * reqbody->size contains offset of where to start to read and
1463 * reqbody->nlink contains number bytes to read.
1465 rdpg->rp_hash = reqbody->size;
1466 if (rdpg->rp_hash != reqbody->size) {
1467 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1468 rdpg->rp_hash, reqbody->size);
1472 rdpg->rp_attrs = reqbody->mode;
1473 rdpg->rp_count = reqbody->nlink;
1474 rdpg->rp_npages = (rdpg->rp_count + CFS_PAGE_SIZE - 1)>>CFS_PAGE_SHIFT;
1475 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1476 if (rdpg->rp_pages == NULL)
1479 for (i = 0; i < rdpg->rp_npages; ++i) {
1480 rdpg->rp_pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
1481 if (rdpg->rp_pages[i] == NULL)
1482 GOTO(free_rdpg, rc = -ENOMEM);
1485 /* call lower layers to fill allocated pages with directory data */
1486 rc = mo_readpage(info->mti_env, mdt_object_child(object), rdpg);
1488 GOTO(free_rdpg, rc);
1490 /* send pages to client */
1491 rc = mdt_sendpage(info, rdpg);
1496 for (i = 0; i < rdpg->rp_npages; i++)
1497 if (rdpg->rp_pages[i] != NULL)
1498 cfs_free_page(rdpg->rp_pages[i]);
1499 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1501 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1507 static int mdt_reint_internal(struct mdt_thread_info *info,
1508 struct mdt_lock_handle *lhc,
1511 struct req_capsule *pill = info->mti_pill;
1512 struct mdt_device *mdt = info->mti_mdt;
1513 struct md_quota *mq = md_quota(info->mti_env);
1514 struct mdt_body *repbody;
1519 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1520 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1521 mdt->mdt_max_mdsize);
1522 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1523 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
1524 mdt->mdt_max_cookiesize);
1526 rc = req_capsule_server_pack(pill);
1528 CERROR("Can't pack response, rc %d\n", rc);
1529 RETURN(err_serious(rc));
1532 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1533 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1535 repbody->eadatasize = 0;
1536 repbody->aclsize = 0;
1539 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNPACK))
1540 GOTO(out_shrink, rc = err_serious(-EFAULT));
1542 rc = mdt_reint_unpack(info, op);
1544 CERROR("Can't unpack reint, rc %d\n", rc);
1545 GOTO(out_shrink, rc = err_serious(rc));
1548 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_REINT_DELAY, 10);
1550 /* for replay no cookkie / lmm need, because client have this already */
1551 if (info->mti_spec.no_create == 1) {
1552 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1553 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, 0);
1555 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1556 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
1560 rc = mdt_init_ucred_reint(info);
1562 GOTO(out_shrink, rc);
1564 rc = mdt_fix_attr_ucred(info, op);
1566 GOTO(out_ucred, rc = err_serious(rc));
1568 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1569 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1570 GOTO(out_ucred, rc);
1572 mq->mq_exp = info->mti_exp;
1573 rc = mdt_reint_rec(info, lhc);
1576 mdt_exit_ucred(info);
1578 mdt_shrink_reply(info);
1582 static long mdt_reint_opcode(struct mdt_thread_info *info,
1583 const struct req_format **fmt)
1585 struct mdt_rec_reint *rec;
1588 opc = err_serious(-EFAULT);
1589 rec = req_capsule_client_get(info->mti_pill, &RMF_REC_REINT);
1591 opc = rec->rr_opcode;
1592 DEBUG_REQ(D_INODE, mdt_info_req(info), "reint opt = %ld", opc);
1593 if (opc < REINT_MAX && fmt[opc] != NULL)
1594 req_capsule_extend(info->mti_pill, fmt[opc]);
1596 CERROR("Unsupported opc: %ld\n", opc);
1597 opc = err_serious(opc);
1603 static int mdt_reint(struct mdt_thread_info *info)
1608 static const struct req_format *reint_fmts[REINT_MAX] = {
1609 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1610 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1611 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1612 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1613 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1614 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1615 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR
1620 opc = mdt_reint_opcode(info, reint_fmts);
1623 * No lock possible here from client to pass it to reint code
1626 rc = mdt_reint_internal(info, NULL, opc);
1631 info->mti_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1635 /* this should sync the whole device */
1636 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1638 struct dt_device *dt = mdt->mdt_bottom;
1642 rc = dt->dd_ops->dt_sync(env, dt);
1646 /* this should sync this object */
1647 static int mdt_object_sync(struct mdt_thread_info *info)
1649 struct md_object *next;
1653 if (!mdt_object_exists(info->mti_object)) {
1654 CWARN("Non existing object "DFID"!\n",
1655 PFID(mdt_object_fid(info->mti_object)));
1658 next = mdt_object_child(info->mti_object);
1659 rc = mo_object_sync(info->mti_env, next);
1664 static int mdt_sync(struct mdt_thread_info *info)
1666 struct req_capsule *pill = info->mti_pill;
1667 struct mdt_body *body;
1671 /* The fid may be zero, so we req_capsule_set manually */
1672 req_capsule_set(pill, &RQF_MDS_SYNC);
1674 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
1676 RETURN(err_serious(-EINVAL));
1678 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1679 RETURN(err_serious(-ENOMEM));
1681 if (fid_seq(&body->fid1) == 0) {
1682 /* sync the whole device */
1683 rc = req_capsule_server_pack(pill);
1685 rc = mdt_device_sync(info->mti_env, info->mti_mdt);
1687 rc = err_serious(rc);
1689 /* sync an object */
1690 rc = mdt_unpack_req_pack_rep(info, HABEO_CORPUS|HABEO_REFERO);
1692 rc = mdt_object_sync(info);
1694 struct md_object *next;
1695 const struct lu_fid *fid;
1696 struct lu_attr *la = &info->mti_attr.ma_attr;
1698 next = mdt_object_child(info->mti_object);
1699 info->mti_attr.ma_need = MA_INODE;
1700 info->mti_attr.ma_valid = 0;
1701 rc = mo_attr_get(info->mti_env, next,
1704 body = req_capsule_server_get(pill,
1706 fid = mdt_object_fid(info->mti_object);
1707 mdt_pack_attr2body(info, body, la, fid);
1711 rc = err_serious(rc);
1716 #ifdef HAVE_QUOTA_SUPPORT
1717 static int mdt_quotacheck_handle(struct mdt_thread_info *info)
1719 struct obd_quotactl *oqctl;
1720 struct req_capsule *pill = info->mti_pill;
1721 struct obd_export *exp = info->mti_exp;
1722 struct md_quota *mq = md_quota(info->mti_env);
1723 struct md_device *next = info->mti_mdt->mdt_child;
1727 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1731 /* remote client has no permission for quotacheck */
1732 if (unlikely(exp_connect_rmtclient(exp)))
1735 rc = req_capsule_server_pack(pill);
1740 rc = next->md_ops->mdo_quota.mqo_check(info->mti_env, next,
1745 static int mdt_quotactl_handle(struct mdt_thread_info *info)
1747 struct obd_quotactl *oqctl, *repoqc;
1748 struct req_capsule *pill = info->mti_pill;
1749 struct obd_export *exp = info->mti_exp;
1750 struct md_quota *mq = md_quota(info->mti_env);
1751 struct md_device *next = info->mti_mdt->mdt_child;
1752 const struct md_quota_operations *mqo = &next->md_ops->mdo_quota;
1756 oqctl = req_capsule_client_get(pill, &RMF_OBD_QUOTACTL);
1761 if (exp_connect_rmtclient(exp)) {
1762 struct ptlrpc_request *req = mdt_info_req(info);
1763 struct mdt_export_data *med = mdt_req2med(req);
1764 struct lustre_idmap_table *idmap = med->med_idmap;
1766 if (unlikely(oqctl->qc_cmd != Q_GETQUOTA &&
1767 oqctl->qc_cmd != Q_GETINFO))
1771 if (oqctl->qc_type == USRQUOTA)
1772 id = lustre_idmap_lookup_uid(NULL, idmap, 0,
1774 else if (oqctl->qc_type == GRPQUOTA)
1775 id = lustre_idmap_lookup_gid(NULL, idmap, 0,
1780 if (id == CFS_IDMAP_NOTFOUND) {
1781 CDEBUG(D_QUOTA, "no mapping for id %u\n",
1787 rc = req_capsule_server_pack(pill);
1791 repoqc = req_capsule_server_get(pill, &RMF_OBD_QUOTACTL);
1792 LASSERT(repoqc != NULL);
1795 switch (oqctl->qc_cmd) {
1797 rc = mqo->mqo_on(info->mti_env, next, oqctl->qc_type);
1800 rc = mqo->mqo_off(info->mti_env, next, oqctl->qc_type);
1803 rc = mqo->mqo_setinfo(info->mti_env, next, oqctl->qc_type, id,
1807 rc = mqo->mqo_getinfo(info->mti_env, next, oqctl->qc_type, id,
1811 rc = mqo->mqo_setquota(info->mti_env, next, oqctl->qc_type, id,
1815 rc = mqo->mqo_getquota(info->mti_env, next, oqctl->qc_type, id,
1819 rc = mqo->mqo_getoinfo(info->mti_env, next, oqctl->qc_type, id,
1823 rc = mqo->mqo_getoquota(info->mti_env, next, oqctl->qc_type, id,
1826 case LUSTRE_Q_INVALIDATE:
1827 rc = mqo->mqo_invalidate(info->mti_env, next, oqctl->qc_type);
1829 case LUSTRE_Q_FINVALIDATE:
1830 rc = mqo->mqo_finvalidate(info->mti_env, next, oqctl->qc_type);
1833 CERROR("unsupported mdt_quotactl command: %d\n",
1845 * OBD PING and other handlers.
1847 static int mdt_obd_ping(struct mdt_thread_info *info)
1852 req_capsule_set(info->mti_pill, &RQF_OBD_PING);
1854 rc = target_handle_ping(mdt_info_req(info));
1856 rc = err_serious(rc);
1860 static int mdt_obd_log_cancel(struct mdt_thread_info *info)
1862 return err_serious(-EOPNOTSUPP);
1865 static int mdt_obd_qc_callback(struct mdt_thread_info *info)
1867 return err_serious(-EOPNOTSUPP);
1875 /** clone llog ctxt from child (mdd)
1876 * This allows remote llog (replicator) access.
1877 * We can either pass all llog RPCs (eg mdt_llog_create) on to child where the
1878 * context was originally set up, or we can handle them directly.
1879 * I choose the latter, but that means I need any llog
1880 * contexts set up by child to be accessable by the mdt. So we clone the
1881 * context into our context list here.
1883 static int mdt_llog_ctxt_clone(const struct lu_env *env, struct mdt_device *mdt,
1886 struct md_device *next = mdt->mdt_child;
1887 struct llog_ctxt *ctxt;
1890 if (!llog_ctxt_null(mdt2obd_dev(mdt), idx))
1893 rc = next->md_ops->mdo_llog_ctxt_get(env, next, idx, (void **)&ctxt);
1894 if (rc || ctxt == NULL) {
1895 CERROR("Can't get mdd ctxt %d\n", rc);
1899 rc = llog_group_set_ctxt(&mdt2obd_dev(mdt)->obd_olg, ctxt, idx);
1901 CERROR("Can't set mdt ctxt %d\n", rc);
1906 static int mdt_llog_ctxt_unclone(const struct lu_env *env,
1907 struct mdt_device *mdt, int idx)
1909 struct llog_ctxt *ctxt;
1911 ctxt = llog_get_context(mdt2obd_dev(mdt), idx);
1914 /* Put once for the get we just did, and once for the clone */
1915 llog_ctxt_put(ctxt);
1916 llog_ctxt_put(ctxt);
1920 static int mdt_llog_create(struct mdt_thread_info *info)
1924 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_CREATE);
1925 rc = llog_origin_handle_create(mdt_info_req(info));
1926 return (rc < 0 ? err_serious(rc) : rc);
1929 static int mdt_llog_destroy(struct mdt_thread_info *info)
1933 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1934 rc = llog_origin_handle_destroy(mdt_info_req(info));
1935 return (rc < 0 ? err_serious(rc) : rc);
1938 static int mdt_llog_read_header(struct mdt_thread_info *info)
1942 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1943 rc = llog_origin_handle_read_header(mdt_info_req(info));
1944 return (rc < 0 ? err_serious(rc) : rc);
1947 static int mdt_llog_next_block(struct mdt_thread_info *info)
1951 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1952 rc = llog_origin_handle_next_block(mdt_info_req(info));
1953 return (rc < 0 ? err_serious(rc) : rc);
1956 static int mdt_llog_prev_block(struct mdt_thread_info *info)
1960 req_capsule_set(info->mti_pill, &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1961 rc = llog_origin_handle_prev_block(mdt_info_req(info));
1962 return (rc < 0 ? err_serious(rc) : rc);
1969 static struct ldlm_callback_suite cbs = {
1970 .lcs_completion = ldlm_server_completion_ast,
1971 .lcs_blocking = ldlm_server_blocking_ast,
1975 static int mdt_enqueue(struct mdt_thread_info *info)
1977 struct ptlrpc_request *req;
1982 * info->mti_dlm_req already contains swapped and (if necessary)
1983 * converted dlm request.
1985 LASSERT(info->mti_dlm_req != NULL);
1987 req = mdt_info_req(info);
1990 * Lock without inodebits makes no sense and will oops later in
1991 * ldlm. Let's check it now to see if we have wrong lock from client or
1992 * bits get corrupted somewhere in mdt_intent_policy().
1994 req_bits = info->mti_dlm_req->lock_desc.l_policy_data.l_inodebits.bits;
1995 /* This is disabled because we need to support liblustre flock.
1996 * LASSERT(req_bits != 0);
1999 rc = ldlm_handle_enqueue0(info->mti_mdt->mdt_namespace,
2000 req, info->mti_dlm_req, &cbs);
2001 info->mti_fail_id = OBD_FAIL_LDLM_REPLY;
2002 return rc ? err_serious(rc) : req->rq_status;
2005 static int mdt_convert(struct mdt_thread_info *info)
2008 struct ptlrpc_request *req;
2010 LASSERT(info->mti_dlm_req);
2011 req = mdt_info_req(info);
2012 rc = ldlm_handle_convert0(req, info->mti_dlm_req);
2013 return rc ? err_serious(rc) : req->rq_status;
2016 static int mdt_bl_callback(struct mdt_thread_info *info)
2018 CERROR("bl callbacks should not happen on MDS\n");
2020 return err_serious(-EOPNOTSUPP);
2023 static int mdt_cp_callback(struct mdt_thread_info *info)
2025 CERROR("cp callbacks should not happen on MDS\n");
2027 return err_serious(-EOPNOTSUPP);
2031 * sec context handlers
2033 static int mdt_sec_ctx_handle(struct mdt_thread_info *info)
2037 rc = mdt_handle_idmap(info);
2040 struct ptlrpc_request *req = mdt_info_req(info);
2043 opc = lustre_msg_get_opc(req->rq_reqmsg);
2044 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
2045 sptlrpc_svc_ctx_invalidate(req);
2048 OBD_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, obd_fail_val);
2053 static struct mdt_object *mdt_obj(struct lu_object *o)
2055 LASSERT(lu_device_is_mdt(o->lo_dev));
2056 return container_of0(o, struct mdt_object, mot_obj.mo_lu);
2059 struct mdt_object *mdt_object_find(const struct lu_env *env,
2060 struct mdt_device *d,
2061 const struct lu_fid *f)
2063 struct lu_object *o;
2064 struct mdt_object *m;
2067 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
2068 o = lu_object_find(env, &d->mdt_md_dev.md_lu_dev, f, NULL);
2069 if (unlikely(IS_ERR(o)))
2070 m = (struct mdt_object *)o;
2077 * Asyncronous commit for mdt device.
2079 * Pass asynchonous commit call down the MDS stack.
2081 * \param env environment
2082 * \param mdt the mdt device
2084 static void mdt_device_commit_async(const struct lu_env *env,
2085 struct mdt_device *mdt)
2087 struct dt_device *dt = mdt->mdt_bottom;
2090 rc = dt->dd_ops->dt_commit_async(env, dt);
2091 if (unlikely(rc != 0))
2092 CWARN("async commit start failed with rc = %d", rc);
2096 * Mark the lock as "synchonous".
2098 * Mark the lock to deffer transaction commit to the unlock time.
2100 * \param lock the lock to mark as "synchonous"
2102 * \see mdt_is_lock_sync
2103 * \see mdt_save_lock
2105 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
2107 lock->l_ast_data = (void*)1;
2111 * Check whehter the lock "synchonous" or not.
2113 * \param lock the lock to check
2114 * \retval 1 the lock is "synchonous"
2115 * \retval 0 the lock isn't "synchronous"
2117 * \see mdt_set_lock_sync
2118 * \see mdt_save_lock
2120 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
2122 return lock->l_ast_data != NULL;
2126 * Blocking AST for mdt locks.
2128 * Starts transaction commit if in case of COS lock conflict or
2129 * deffers such a commit to the mdt_save_lock.
2131 * \param lock the lock which blocks a request or cancelling lock
2132 * \param desc unused
2133 * \param data unused
2134 * \param flag indicates whether this cancelling or blocking callback
2136 * \see ldlm_blocking_ast_nocheck
2138 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2139 void *data, int flag)
2141 struct obd_device *obd = lock->l_resource->lr_namespace->ns_obd;
2142 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
2146 if (flag == LDLM_CB_CANCELING)
2148 lock_res_and_lock(lock);
2149 if (lock->l_blocking_ast != mdt_blocking_ast) {
2150 unlock_res_and_lock(lock);
2153 if (mdt_cos_is_enabled(mdt) &&
2154 lock->l_req_mode & (LCK_PW | LCK_EX) &&
2155 lock->l_blocking_lock != NULL &&
2156 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
2157 mdt_set_lock_sync(lock);
2159 rc = ldlm_blocking_ast_nocheck(lock);
2161 /* There is no lock conflict if l_blocking_lock == NULL,
2162 * it indicates a blocking ast sent from ldlm_lock_decref_internal
2163 * when the last reference to a local lock was released */
2164 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
2167 rc = lu_env_init(&env, LCT_MD_THREAD);
2168 if (unlikely(rc != 0))
2169 CWARN("lu_env initialization failed with rc = %d,"
2170 "cannot start asynchronous commit\n", rc);
2172 mdt_device_commit_async(&env, mdt);
2178 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
2179 struct mdt_lock_handle *lh, __u64 ibits, int locality)
2181 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
2182 ldlm_policy_data_t *policy = &info->mti_policy;
2183 struct ldlm_res_id *res_id = &info->mti_res_id;
2187 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2188 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2189 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
2190 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
2192 if (mdt_object_exists(o) < 0) {
2193 if (locality == MDT_CROSS_LOCK) {
2194 /* cross-ref object fix */
2195 ibits &= ~MDS_INODELOCK_UPDATE;
2196 ibits |= MDS_INODELOCK_LOOKUP;
2198 LASSERT(!(ibits & MDS_INODELOCK_UPDATE));
2199 LASSERT(ibits & MDS_INODELOCK_LOOKUP);
2201 /* No PDO lock on remote object */
2202 LASSERT(lh->mlh_type != MDT_PDO_LOCK);
2205 if (lh->mlh_type == MDT_PDO_LOCK) {
2206 /* check for exists after object is locked */
2207 if (mdt_object_exists(o) == 0) {
2208 /* Non-existent object shouldn't have PDO lock */
2211 /* Non-dir object shouldn't have PDO lock */
2212 LASSERT(S_ISDIR(lu_object_attr(&o->mot_obj.mo_lu)));
2216 memset(policy, 0, sizeof(*policy));
2217 fid_build_reg_res_name(mdt_object_fid(o), res_id);
2220 * Take PDO lock on whole directory and build correct @res_id for lock
2221 * on part of directory.
2223 if (lh->mlh_pdo_hash != 0) {
2224 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
2225 mdt_lock_pdo_mode(info, o, lh);
2226 if (lh->mlh_pdo_mode != LCK_NL) {
2228 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
2229 * is never going to be sent to client and we do not
2230 * want it slowed down due to possible cancels.
2232 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
2233 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
2234 policy, res_id, LDLM_FL_ATOMIC_CB,
2235 &info->mti_exp->exp_handle.h_cookie);
2241 * Finish res_id initializing by name hash marking part of
2242 * directory which is taking modification.
2244 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
2247 policy->l_inodebits.bits = ibits;
2250 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
2251 * going to be sent to client. If it is - mdt_intent_policy() path will
2252 * fix it up and turn FL_LOCAL flag off.
2254 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
2255 res_id, LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB,
2256 &info->mti_exp->exp_handle.h_cookie);
2262 mdt_object_unlock(info, o, lh, 1);
2269 * Save a lock within request object.
2271 * Keep the lock referenced until whether client ACK or transaction
2272 * commit happens or release the lock immediately depending on input
2273 * parameters. If COS is ON, a write lock is converted to COS lock
2276 * \param info thead info object
2277 * \param h lock handle
2278 * \param mode lock mode
2279 * \param decref force immediate lock releasing
2282 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
2283 ldlm_mode_t mode, int decref)
2287 if (lustre_handle_is_used(h)) {
2288 if (decref || !info->mti_has_trans ||
2289 !(mode & (LCK_PW | LCK_EX))){
2290 mdt_fid_unlock(h, mode);
2292 struct mdt_device *mdt = info->mti_mdt;
2293 struct ldlm_lock *lock = ldlm_handle2lock(h);
2294 struct ptlrpc_request *req = mdt_info_req(info);
2297 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2299 CDEBUG(D_HA, "request = %p reply state = %p"
2300 " transno = "LPD64"\n",
2301 req, req->rq_reply_state, req->rq_transno);
2302 if (mdt_cos_is_enabled(mdt)) {
2304 ldlm_lock_downgrade(lock, LCK_COS);
2307 ptlrpc_save_lock(req, h, mode, no_ack);
2308 if (mdt_is_lock_sync(lock)) {
2309 CDEBUG(D_HA, "found sync-lock,"
2310 " async commit started\n");
2311 mdt_device_commit_async(info->mti_env,
2314 LDLM_LOCK_PUT(lock);
2323 * Unlock mdt object.
2325 * Immeditely release the regular lock and the PDO lock or save the
2326 * lock in reqeuest and keep them referenced until client ACK or
2327 * transaction commit.
2329 * \param info thread info object
2330 * \param o mdt object
2331 * \param lh mdt lock handle referencing regular and PDO locks
2332 * \param decref force immediate lock releasing
2334 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2335 struct mdt_lock_handle *lh, int decref)
2339 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2340 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2345 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2346 const struct lu_fid *f,
2347 struct mdt_lock_handle *lh,
2350 struct mdt_object *o;
2352 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2356 rc = mdt_object_lock(info, o, lh, ibits,
2359 mdt_object_put(info->mti_env, o);
2366 void mdt_object_unlock_put(struct mdt_thread_info * info,
2367 struct mdt_object * o,
2368 struct mdt_lock_handle *lh,
2371 mdt_object_unlock(info, o, lh, decref);
2372 mdt_object_put(info->mti_env, o);
2375 static struct mdt_handler *mdt_handler_find(__u32 opc,
2376 struct mdt_opc_slice *supported)
2378 struct mdt_opc_slice *s;
2379 struct mdt_handler *h;
2382 for (s = supported; s->mos_hs != NULL; s++) {
2383 if (s->mos_opc_start <= opc && opc < s->mos_opc_end) {
2384 h = s->mos_hs + (opc - s->mos_opc_start);
2385 if (likely(h->mh_opc != 0))
2386 LASSERTF(h->mh_opc == opc,
2387 "opcode mismatch %d != %d\n",
2390 h = NULL; /* unsupported opc */
2397 static int mdt_lock_resname_compat(struct mdt_device *m,
2398 struct ldlm_request *req)
2400 /* XXX something... later. */
2404 static int mdt_lock_reply_compat(struct mdt_device *m, struct ldlm_reply *rep)
2406 /* XXX something... later. */
2411 * Generic code handling requests that have struct mdt_body passed in:
2413 * - extract mdt_body from request and save it in @info, if present;
2415 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2418 * - if HABEO_CORPUS flag is set for this request type check whether object
2419 * actually exists on storage (lu_object_exists()).
2422 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2424 const struct mdt_body *body;
2425 struct mdt_object *obj;
2426 const struct lu_env *env;
2427 struct req_capsule *pill;
2431 env = info->mti_env;
2432 pill = info->mti_pill;
2434 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2438 if (!(body->valid & OBD_MD_FLID))
2441 if (!fid_is_sane(&body->fid1)) {
2442 CERROR("Invalid fid: "DFID"\n", PFID(&body->fid1));
2447 * Do not get size or any capa fields before we check that request
2448 * contains capa actually. There are some requests which do not, for
2449 * instance MDS_IS_SUBDIR.
2451 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2452 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2453 mdt_set_capainfo(info, 0, &body->fid1,
2454 req_capsule_client_get(pill, &RMF_CAPA1));
2456 obj = mdt_object_find(env, info->mti_mdt, &body->fid1);
2458 if ((flags & HABEO_CORPUS) &&
2459 !mdt_object_exists(obj)) {
2460 mdt_object_put(env, obj);
2461 /* for capability renew ENOENT will be handled in
2463 if (body->valid & OBD_MD_FLOSSCAPA)
2468 info->mti_object = obj;
2477 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2479 struct req_capsule *pill = info->mti_pill;
2483 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2484 rc = mdt_body_unpack(info, flags);
2488 if (rc == 0 && (flags & HABEO_REFERO)) {
2489 struct mdt_device *mdt = info->mti_mdt;
2493 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2494 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2495 mdt->mdt_max_mdsize);
2496 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2497 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
2498 mdt->mdt_max_cookiesize);
2500 rc = req_capsule_server_pack(pill);
2505 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2507 struct md_device *next = m->mdt_child;
2509 return next->md_ops->mdo_init_capa_ctxt(env, next,
2510 m->mdt_opts.mo_mds_capa,
2511 m->mdt_capa_timeout,
2517 * Invoke handler for this request opc. Also do necessary preprocessing
2518 * (according to handler ->mh_flags), and post-processing (setting of
2519 * ->last_{xid,committed}).
2521 static int mdt_req_handle(struct mdt_thread_info *info,
2522 struct mdt_handler *h, struct ptlrpc_request *req)
2524 int rc, serious = 0;
2529 LASSERT(h->mh_act != NULL);
2530 LASSERT(h->mh_opc == lustre_msg_get_opc(req->rq_reqmsg));
2531 LASSERT(current->journal_info == NULL);
2534 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
2535 * to put same checks into handlers like mdt_close(), mdt_reint(),
2536 * etc., without talking to mdt authors first. Checking same thing
2537 * there again is useless and returning 0 error without packing reply
2538 * is buggy! Handlers either pack reply or return error.
2540 * We return 0 here and do not send any reply in order to emulate
2541 * network failure. Do not send any reply in case any of NET related
2542 * fail_id has occured.
2544 if (OBD_FAIL_CHECK_ORSET(h->mh_fail_id, OBD_FAIL_ONCE))
2548 flags = h->mh_flags;
2549 LASSERT(ergo(flags & (HABEO_CORPUS|HABEO_REFERO), h->mh_fmt != NULL));
2551 if (h->mh_fmt != NULL) {
2552 req_capsule_set(info->mti_pill, h->mh_fmt);
2553 rc = mdt_unpack_req_pack_rep(info, flags);
2556 if (rc == 0 && flags & MUTABOR &&
2557 req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
2558 /* should it be rq_status? */
2561 if (rc == 0 && flags & HABEO_CLAVIS) {
2562 struct ldlm_request *dlm_req;
2564 LASSERT(h->mh_fmt != NULL);
2566 dlm_req = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2567 if (dlm_req != NULL) {
2568 if (info->mti_mdt->mdt_opts.mo_compat_resname)
2569 rc = mdt_lock_resname_compat(info->mti_mdt,
2571 info->mti_dlm_req = dlm_req;
2577 /* capability setting changed via /proc, needs reinitialize ctxt */
2578 if (info->mti_mdt && info->mti_mdt->mdt_capa_conf) {
2579 mdt_init_capa_ctxt(info->mti_env, info->mti_mdt);
2580 info->mti_mdt->mdt_capa_conf = 0;
2583 if (likely(rc == 0)) {
2585 * Process request, there can be two types of rc:
2586 * 1) errors with msg unpack/pack, other failures outside the
2587 * operation itself. This is counted as serious errors;
2588 * 2) errors during fs operation, should be placed in rq_status
2591 rc = h->mh_act(info);
2593 !req->rq_no_reply && req->rq_reply_state == NULL) {
2594 DEBUG_REQ(D_ERROR, req, "MDT \"handler\" %s did not "
2595 "pack reply and returned 0 error\n",
2599 serious = is_serious(rc);
2600 rc = clear_serious(rc);
2604 req->rq_status = rc;
2607 * ELDLM_* codes which > 0 should be in rq_status only as well as
2608 * all non-serious errors.
2610 if (rc > 0 || !serious)
2613 LASSERT(current->journal_info == NULL);
2615 if (rc == 0 && (flags & HABEO_CLAVIS) &&
2616 info->mti_mdt->mdt_opts.mo_compat_resname) {
2617 struct ldlm_reply *dlmrep;
2619 dlmrep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
2621 rc = mdt_lock_reply_compat(info->mti_mdt, dlmrep);
2624 /* If we're DISCONNECTing, the mdt_export_data is already freed */
2625 if (likely(rc == 0 && req->rq_export && h->mh_opc != MDS_DISCONNECT))
2626 target_committed_to_req(req);
2628 if (unlikely((lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) &&
2629 lustre_msg_get_transno(req->rq_reqmsg) == 0)) {
2630 DEBUG_REQ(D_ERROR, req, "transno is 0 during REPLAY");
2634 target_send_reply(req, rc, info->mti_fail_id);
2638 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2640 lh->mlh_type = MDT_NUL_LOCK;
2641 lh->mlh_reg_lh.cookie = 0ull;
2642 lh->mlh_reg_mode = LCK_MINMODE;
2643 lh->mlh_pdo_lh.cookie = 0ull;
2644 lh->mlh_pdo_mode = LCK_MINMODE;
2647 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2649 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2650 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2654 * Initialize fields of struct mdt_thread_info. Other fields are left in
2655 * uninitialized state, because it's too expensive to zero out whole
2656 * mdt_thread_info (> 1K) on each request arrival.
2658 static void mdt_thread_info_init(struct ptlrpc_request *req,
2659 struct mdt_thread_info *info)
2662 struct md_capainfo *ci;
2664 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
2665 info->mti_pill = &req->rq_pill;
2668 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2669 mdt_lock_handle_init(&info->mti_lh[i]);
2671 /* mdt device: it can be NULL while CONNECT */
2672 if (req->rq_export) {
2673 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2674 info->mti_exp = req->rq_export;
2676 info->mti_mdt = NULL;
2677 info->mti_env = req->rq_svc_thread->t_env;
2678 ci = md_capainfo(info->mti_env);
2679 memset(ci, 0, sizeof *ci);
2680 if (req->rq_export) {
2681 if (exp_connect_rmtclient(req->rq_export))
2682 ci->mc_auth = LC_ID_CONVERT;
2683 else if (req->rq_export->exp_connect_flags &
2684 OBD_CONNECT_MDS_CAPA)
2685 ci->mc_auth = LC_ID_PLAIN;
2687 ci->mc_auth = LC_ID_NONE;
2690 info->mti_fail_id = OBD_FAIL_MDS_ALL_REPLY_NET;
2691 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2692 info->mti_mos[0] = NULL;
2693 info->mti_mos[1] = NULL;
2694 info->mti_mos[2] = NULL;
2695 info->mti_mos[3] = NULL;
2697 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2698 info->mti_body = NULL;
2699 info->mti_object = NULL;
2700 info->mti_dlm_req = NULL;
2701 info->mti_has_trans = 0;
2702 info->mti_no_need_trans = 0;
2703 info->mti_cross_ref = 0;
2704 info->mti_opdata = 0;
2706 /* To not check for split by default. */
2707 info->mti_spec.sp_ck_split = 0;
2708 info->mti_spec.no_create = 0;
2711 static void mdt_thread_info_fini(struct mdt_thread_info *info)
2715 req_capsule_fini(info->mti_pill);
2716 if (info->mti_object != NULL) {
2718 * freeing an object may lead to OSD level transaction, do not
2719 * let it mess with MDT. bz19385.
2721 info->mti_no_need_trans = 1;
2722 mdt_object_put(info->mti_env, info->mti_object);
2723 info->mti_object = NULL;
2725 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2726 mdt_lock_handle_fini(&info->mti_lh[i]);
2727 info->mti_env = NULL;
2730 static int mdt_filter_recovery_request(struct ptlrpc_request *req,
2731 struct obd_device *obd, int *process)
2733 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2734 case MDS_CONNECT: /* This will never get here, but for completeness. */
2735 case OST_CONNECT: /* This will never get here, but for completeness. */
2736 case MDS_DISCONNECT:
2737 case OST_DISCONNECT:
2742 case MDS_DONE_WRITING:
2743 case MDS_SYNC: /* used in unmounting */
2749 *process = target_queue_recovery_request(req, obd);
2753 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
2760 * Handle recovery. Return:
2761 * +1: continue request processing;
2762 * -ve: abort immediately with the given error code;
2763 * 0: send reply with error code in req->rq_status;
2765 static int mdt_recovery(struct mdt_thread_info *info)
2767 struct ptlrpc_request *req = mdt_info_req(info);
2768 struct obd_device *obd;
2772 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2775 case SEC_CTX_INIT_CONT:
2781 rc = mdt_handle_idmap(info);
2790 if (unlikely(!class_connected_export(req->rq_export))) {
2791 CERROR("operation %d on unconnected MDS from %s\n",
2792 lustre_msg_get_opc(req->rq_reqmsg),
2793 libcfs_id2str(req->rq_peer));
2794 /* FIXME: For CMD cleanup, when mds_B stop, the req from
2795 * mds_A will get -ENOTCONN(especially for ping req),
2796 * which will cause that mds_A deactive timeout, then when
2797 * mds_A cleanup, the cleanup process will be suspended since
2798 * deactive timeout is not zero.
2800 req->rq_status = -ENOTCONN;
2801 target_send_reply(req, -ENOTCONN, info->mti_fail_id);
2805 /* sanity check: if the xid matches, the request must be marked as a
2806 * resent or replayed */
2807 if (req_xid_is_last(req)) {
2808 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
2809 (MSG_RESENT | MSG_REPLAY))) {
2810 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches last_xid, "
2811 "expected REPLAY or RESENT flag (%x)", req->rq_xid,
2812 lustre_msg_get_flags(req->rq_reqmsg));
2814 req->rq_status = -ENOTCONN;
2819 /* else: note the opposite is not always true; a RESENT req after a
2820 * failover will usually not match the last_xid, since it was likely
2821 * never committed. A REPLAYed request will almost never match the
2822 * last xid, however it could for a committed, but still retained,
2825 obd = req->rq_export->exp_obd;
2827 /* Check for aborted recovery... */
2828 if (unlikely(obd->obd_recovering)) {
2831 DEBUG_REQ(D_INFO, req, "Got new replay");
2832 rc = mdt_filter_recovery_request(req, obd, &should_process);
2833 if (rc != 0 || !should_process)
2835 else if (should_process < 0) {
2836 req->rq_status = should_process;
2837 rc = ptlrpc_error(req);
2844 static int mdt_msg_check_version(struct lustre_msg *msg)
2848 switch (lustre_msg_get_opc(msg)) {
2850 case MDS_DISCONNECT:
2853 case SEC_CTX_INIT_CONT:
2855 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
2857 CERROR("bad opc %u version %08x, expecting %08x\n",
2858 lustre_msg_get_opc(msg),
2859 lustre_msg_get_version(msg),
2860 LUSTRE_OBD_VERSION);
2864 case MDS_GETATTR_NAME:
2871 case MDS_DONE_WRITING:
2878 case MDS_QUOTACHECK:
2884 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
2886 CERROR("bad opc %u version %08x, expecting %08x\n",
2887 lustre_msg_get_opc(msg),
2888 lustre_msg_get_version(msg),
2889 LUSTRE_MDS_VERSION);
2893 case LDLM_BL_CALLBACK:
2894 case LDLM_CP_CALLBACK:
2895 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
2897 CERROR("bad opc %u version %08x, expecting %08x\n",
2898 lustre_msg_get_opc(msg),
2899 lustre_msg_get_version(msg),
2900 LUSTRE_DLM_VERSION);
2902 case OBD_LOG_CANCEL:
2903 case LLOG_ORIGIN_HANDLE_CREATE:
2904 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
2905 case LLOG_ORIGIN_HANDLE_READ_HEADER:
2906 case LLOG_ORIGIN_HANDLE_CLOSE:
2907 case LLOG_ORIGIN_HANDLE_DESTROY:
2908 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
2910 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
2912 CERROR("bad opc %u version %08x, expecting %08x\n",
2913 lustre_msg_get_opc(msg),
2914 lustre_msg_get_version(msg),
2915 LUSTRE_LOG_VERSION);
2918 CERROR("MDS unknown opcode %d\n", lustre_msg_get_opc(msg));
2924 static int mdt_handle0(struct ptlrpc_request *req,
2925 struct mdt_thread_info *info,
2926 struct mdt_opc_slice *supported)
2928 struct mdt_handler *h;
2929 struct lustre_msg *msg;
2934 if (OBD_FAIL_CHECK_ORSET(OBD_FAIL_MDS_ALL_REQUEST_NET, OBD_FAIL_ONCE))
2937 LASSERT(current->journal_info == NULL);
2939 msg = req->rq_reqmsg;
2940 rc = mdt_msg_check_version(msg);
2941 if (likely(rc == 0)) {
2942 rc = mdt_recovery(info);
2943 if (likely(rc == +1)) {
2944 h = mdt_handler_find(lustre_msg_get_opc(msg),
2946 if (likely(h != NULL)) {
2947 rc = mdt_req_handle(info, h, req);
2949 CERROR("The unsupported opc: 0x%x\n",
2950 lustre_msg_get_opc(msg) );
2951 req->rq_status = -ENOTSUPP;
2952 rc = ptlrpc_error(req);
2957 CERROR(LUSTRE_MDT_NAME" drops mal-formed request\n");
2962 * MDT handler function called by ptlrpc service thread when request comes.
2964 * XXX common "target" functionality should be factored into separate module
2965 * shared by mdt, ost and stand-alone services like fld.
2967 static int mdt_handle_common(struct ptlrpc_request *req,
2968 struct mdt_opc_slice *supported)
2971 struct mdt_thread_info *info;
2975 env = req->rq_svc_thread->t_env;
2976 LASSERT(env != NULL);
2977 LASSERT(env->le_ses != NULL);
2978 LASSERT(env->le_ctx.lc_thread == req->rq_svc_thread);
2979 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
2980 LASSERT(info != NULL);
2982 mdt_thread_info_init(req, info);
2984 rc = mdt_handle0(req, info, supported);
2986 mdt_thread_info_fini(info);
2991 * This is called from recovery code as handler of _all_ RPC types, FLD and SEQ
2994 int mdt_recovery_handle(struct ptlrpc_request *req)
2999 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
3001 rc = mdt_handle_common(req, mdt_fld_handlers);
3004 rc = mdt_handle_common(req, mdt_seq_handlers);
3007 rc = mdt_handle_common(req, mdt_regular_handlers);
3014 static int mdt_regular_handle(struct ptlrpc_request *req)
3016 return mdt_handle_common(req, mdt_regular_handlers);
3019 static int mdt_readpage_handle(struct ptlrpc_request *req)
3021 return mdt_handle_common(req, mdt_readpage_handlers);
3024 static int mdt_xmds_handle(struct ptlrpc_request *req)
3026 return mdt_handle_common(req, mdt_xmds_handlers);
3029 static int mdt_mdsc_handle(struct ptlrpc_request *req)
3031 return mdt_handle_common(req, mdt_seq_handlers);
3034 static int mdt_mdss_handle(struct ptlrpc_request *req)
3036 return mdt_handle_common(req, mdt_seq_handlers);
3039 static int mdt_dtss_handle(struct ptlrpc_request *req)
3041 return mdt_handle_common(req, mdt_seq_handlers);
3044 static int mdt_fld_handle(struct ptlrpc_request *req)
3046 return mdt_handle_common(req, mdt_fld_handlers);
3062 static int mdt_intent_getattr(enum mdt_it_code opcode,
3063 struct mdt_thread_info *info,
3064 struct ldlm_lock **,
3066 static int mdt_intent_reint(enum mdt_it_code opcode,
3067 struct mdt_thread_info *info,
3068 struct ldlm_lock **,
3071 static struct mdt_it_flavor {
3072 const struct req_format *it_fmt;
3074 int (*it_act)(enum mdt_it_code ,
3075 struct mdt_thread_info *,
3076 struct ldlm_lock **,
3079 } mdt_it_flavor[] = {
3081 .it_fmt = &RQF_LDLM_INTENT,
3082 /*.it_flags = HABEO_REFERO,*/
3084 .it_act = mdt_intent_reint,
3085 .it_reint = REINT_OPEN
3088 .it_fmt = &RQF_LDLM_INTENT,
3089 .it_flags = MUTABOR,
3090 .it_act = mdt_intent_reint,
3091 .it_reint = REINT_OPEN
3094 .it_fmt = &RQF_LDLM_INTENT,
3095 .it_flags = MUTABOR,
3096 .it_act = mdt_intent_reint,
3097 .it_reint = REINT_CREATE
3099 [MDT_IT_GETATTR] = {
3100 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3101 .it_flags = HABEO_REFERO,
3102 .it_act = mdt_intent_getattr
3104 [MDT_IT_READDIR] = {
3110 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
3111 .it_flags = HABEO_REFERO,
3112 .it_act = mdt_intent_getattr
3115 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
3116 .it_flags = MUTABOR,
3118 .it_reint = REINT_UNLINK
3122 .it_flags = MUTABOR,
3125 [MDT_IT_GETXATTR] = {
3132 int mdt_intent_lock_replace(struct mdt_thread_info *info,
3133 struct ldlm_lock **lockp,
3134 struct ldlm_lock *new_lock,
3135 struct mdt_lock_handle *lh,
3138 struct ptlrpc_request *req = mdt_info_req(info);
3139 struct ldlm_lock *lock = *lockp;
3142 * Get new lock only for cases when possible resent did not find any
3145 if (new_lock == NULL)
3146 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
3148 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
3149 lh->mlh_reg_lh.cookie = 0;
3153 LASSERTF(new_lock != NULL,
3154 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
3157 * If we've already given this lock to a client once, then we should
3158 * have no readers or writers. Otherwise, we should have one reader
3159 * _or_ writer ref (which will be zeroed below) before returning the
3162 if (new_lock->l_export == req->rq_export) {
3163 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
3165 LASSERT(new_lock->l_export == NULL);
3166 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
3171 if (new_lock->l_export == req->rq_export) {
3173 * Already gave this to the client, which means that we
3174 * reconstructed a reply.
3176 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
3178 lh->mlh_reg_lh.cookie = 0;
3179 RETURN(ELDLM_LOCK_REPLACED);
3183 * Fixup the lock to be given to the client.
3185 lock_res_and_lock(new_lock);
3186 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
3187 * possible blocking AST. */
3188 while (new_lock->l_readers > 0) {
3189 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
3190 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3191 new_lock->l_readers--;
3193 while (new_lock->l_writers > 0) {
3194 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
3195 lu_ref_del(&new_lock->l_reference, "user", new_lock);
3196 new_lock->l_writers--;
3199 new_lock->l_export = class_export_lock_get(req->rq_export, new_lock);
3200 new_lock->l_blocking_ast = lock->l_blocking_ast;
3201 new_lock->l_completion_ast = lock->l_completion_ast;
3202 new_lock->l_remote_handle = lock->l_remote_handle;
3203 new_lock->l_flags &= ~LDLM_FL_LOCAL;
3205 unlock_res_and_lock(new_lock);
3207 cfs_hash_add(new_lock->l_export->exp_lock_hash,
3208 &new_lock->l_remote_handle,
3209 &new_lock->l_exp_hash);
3211 LDLM_LOCK_RELEASE(new_lock);
3212 lh->mlh_reg_lh.cookie = 0;
3214 RETURN(ELDLM_LOCK_REPLACED);
3217 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
3218 struct ldlm_lock *new_lock,
3219 struct ldlm_lock **old_lock,
3220 struct mdt_lock_handle *lh)
3222 struct ptlrpc_request *req = mdt_info_req(info);
3223 struct obd_export *exp = req->rq_export;
3224 struct lustre_handle remote_hdl;
3225 struct ldlm_request *dlmreq;
3226 struct ldlm_lock *lock;
3228 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
3231 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
3232 remote_hdl = dlmreq->lock_handle[0];
3234 lock = cfs_hash_lookup(exp->exp_lock_hash, &remote_hdl);
3236 if (lock != new_lock) {
3237 lh->mlh_reg_lh.cookie = lock->l_handle.h_cookie;
3238 lh->mlh_reg_mode = lock->l_granted_mode;
3240 LDLM_DEBUG(lock, "Restoring lock cookie");
3241 DEBUG_REQ(D_DLMTRACE, req,
3242 "restoring lock cookie "LPX64,
3243 lh->mlh_reg_lh.cookie);
3245 *old_lock = LDLM_LOCK_GET(lock);
3246 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
3250 cfs_hash_put(exp->exp_lock_hash, &lock->l_exp_hash);
3254 * If the xid matches, then we know this is a resent request, and allow
3255 * it. (It's probably an OPEN, for which we don't send a lock.
3257 if (req_xid_is_last(req))
3261 * This remote handle isn't enqueued, so we never received or processed
3262 * this request. Clear MSG_RESENT, because it can be handled like any
3263 * normal request now.
3265 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
3267 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
3271 static int mdt_intent_getattr(enum mdt_it_code opcode,
3272 struct mdt_thread_info *info,
3273 struct ldlm_lock **lockp,
3276 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3277 struct ldlm_lock *new_lock = NULL;
3279 struct ldlm_reply *ldlm_rep;
3280 struct ptlrpc_request *req;
3281 struct mdt_body *reqbody;
3282 struct mdt_body *repbody;
3286 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
3289 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
3292 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
3293 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
3294 repbody->eadatasize = 0;
3295 repbody->aclsize = 0;
3299 child_bits = MDS_INODELOCK_LOOKUP;
3301 case MDT_IT_GETATTR:
3302 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE;
3305 CERROR("Unhandled till now");
3306 GOTO(out_shrink, rc = -EINVAL);
3309 rc = mdt_init_ucred(info, reqbody);
3311 GOTO(out_shrink, rc);
3313 req = info->mti_pill->rc_req;
3314 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3315 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3317 /* Get lock from request for possible resent case. */
3318 mdt_intent_fixup_resent(info, *lockp, &new_lock, lhc);
3320 ldlm_rep->lock_policy_res2 =
3321 mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3323 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3324 ldlm_rep->lock_policy_res2 = 0;
3325 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3326 ldlm_rep->lock_policy_res2) {
3327 lhc->mlh_reg_lh.cookie = 0ull;
3328 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3331 rc = mdt_intent_lock_replace(info, lockp, new_lock, lhc, flags);
3334 mdt_exit_ucred(info);
3336 mdt_shrink_reply(info);
3340 static int mdt_intent_reint(enum mdt_it_code opcode,
3341 struct mdt_thread_info *info,
3342 struct ldlm_lock **lockp,
3345 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3346 struct ldlm_reply *rep = NULL;
3350 static const struct req_format *intent_fmts[REINT_MAX] = {
3351 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3352 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3357 opc = mdt_reint_opcode(info, intent_fmts);
3361 if (mdt_it_flavor[opcode].it_reint != opc) {
3362 CERROR("Reint code %ld doesn't match intent: %d\n",
3364 RETURN(err_serious(-EPROTO));
3367 /* Get lock from request for possible resent case. */
3368 mdt_intent_fixup_resent(info, *lockp, NULL, lhc);
3370 rc = mdt_reint_internal(info, lhc, opc);
3372 /* Check whether the reply has been packed successfully. */
3373 if (mdt_info_req(info)->rq_repmsg != NULL)
3374 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3376 RETURN(err_serious(-EFAULT));
3378 /* MDC expects this in any case */
3380 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3382 /* Cross-ref case, the lock should be returned to the client */
3383 if (rc == -EREMOTE) {
3384 LASSERT(lustre_handle_is_used(&lhc->mlh_reg_lh));
3385 rep->lock_policy_res2 = 0;
3386 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3389 rep->lock_policy_res2 = clear_serious(rc);
3391 if (rc == -ENOTCONN || rc == -ENODEV ||
3392 rc == -EOVERFLOW) { /**< if VBR failure then return error */
3394 * If it is the disconnect error (ENODEV & ENOCONN), the error
3395 * will be returned by rq_status, and client at ptlrpc layer
3396 * will detect this, then disconnect, reconnect the import
3397 * immediately, instead of impacting the following the rpc.
3399 lhc->mlh_reg_lh.cookie = 0ull;
3403 * For other cases, the error will be returned by intent.
3404 * and client will retrieve the result from intent.
3407 * FIXME: when open lock is finished, that should be
3410 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
3411 rep->lock_policy_res2 = 0;
3412 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3415 lhc->mlh_reg_lh.cookie = 0ull;
3416 RETURN(ELDLM_LOCK_ABORTED);
3421 static int mdt_intent_code(long itcode)
3429 case IT_OPEN|IT_CREAT:
3436 rc = MDT_IT_READDIR;
3439 rc = MDT_IT_GETATTR;
3451 rc = MDT_IT_GETXATTR;
3454 CERROR("Unknown intent opcode: %ld\n", itcode);
3461 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
3462 struct ldlm_lock **lockp, int flags)
3464 struct req_capsule *pill;
3465 struct mdt_it_flavor *flv;
3470 opc = mdt_intent_code(itopc);
3474 pill = info->mti_pill;
3475 flv = &mdt_it_flavor[opc];
3477 if (flv->it_fmt != NULL)
3478 req_capsule_extend(pill, flv->it_fmt);
3480 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
3482 struct ptlrpc_request *req = mdt_info_req(info);
3483 if (flv->it_flags & MUTABOR &&
3484 req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
3487 if (rc == 0 && flv->it_act != NULL) {
3488 /* execute policy */
3489 rc = flv->it_act(opc, info, lockp, flags);
3496 static int mdt_intent_policy(struct ldlm_namespace *ns,
3497 struct ldlm_lock **lockp, void *req_cookie,
3498 ldlm_mode_t mode, int flags, void *data)
3500 struct mdt_thread_info *info;
3501 struct ptlrpc_request *req = req_cookie;
3502 struct ldlm_intent *it;
3503 struct req_capsule *pill;
3508 LASSERT(req != NULL);
3510 info = lu_context_key_get(&req->rq_svc_thread->t_env->le_ctx,
3512 LASSERT(info != NULL);
3513 pill = info->mti_pill;
3514 LASSERT(pill->rc_req == req);
3516 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
3517 req_capsule_extend(pill, &RQF_LDLM_INTENT);
3518 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
3520 const struct ldlm_request *dlmreq;
3523 rc = mdt_intent_opc(it->opc, info, lockp, flags);
3528 * Lock without inodebits makes no sense and will oops
3529 * later in ldlm. Let's check it now to see if we have
3530 * wrong lock from client or bits get corrupted
3531 * somewhere in mdt_intent_opc().
3533 dlmreq = info->mti_dlm_req;
3534 req_bits = dlmreq->lock_desc.l_policy_data.l_inodebits.bits;
3535 LASSERT(req_bits != 0);
3538 rc = err_serious(-EFAULT);
3540 /* No intent was provided */
3541 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
3542 rc = req_capsule_server_pack(pill);
3544 rc = err_serious(rc);
3552 static void mdt_seq_adjust(const struct lu_env *env,
3553 struct mdt_device *m, int lost)
3555 struct md_site *ms = mdt_md_site(m);
3556 struct lu_seq_range out;
3559 LASSERT(ms && ms->ms_server_seq);
3561 /* get extra seq from seq_server, moving it's range up */
3562 while (lost-- > 0) {
3563 seq_server_alloc_meta(ms->ms_server_seq, NULL, &out, env);
3568 static int mdt_seq_fini(const struct lu_env *env,
3569 struct mdt_device *m)
3571 struct md_site *ms = mdt_md_site(m);
3575 if (ms->ms_server_seq) {
3576 seq_server_fini(ms->ms_server_seq, env);
3577 OBD_FREE_PTR(ms->ms_server_seq);
3578 ms->ms_server_seq = NULL;
3581 if (ms->ms_control_seq) {
3582 seq_server_fini(ms->ms_control_seq, env);
3583 OBD_FREE_PTR(ms->ms_control_seq);
3584 ms->ms_control_seq = NULL;
3587 if (ms->ms_client_seq) {
3588 seq_client_fini(ms->ms_client_seq);
3589 OBD_FREE_PTR(ms->ms_client_seq);
3590 ms->ms_client_seq = NULL;
3597 static int mdt_seq_init(const struct lu_env *env,
3599 struct mdt_device *m)
3606 ms = mdt_md_site(m);
3609 * This is sequence-controller node. Init seq-controller server on local
3612 if (ms->ms_node_id == 0) {
3613 LASSERT(ms->ms_control_seq == NULL);
3615 OBD_ALLOC_PTR(ms->ms_control_seq);
3616 if (ms->ms_control_seq == NULL)
3619 rc = seq_server_init(ms->ms_control_seq,
3620 m->mdt_bottom, uuid,
3621 LUSTRE_SEQ_CONTROLLER,
3626 GOTO(out_seq_fini, rc);
3628 OBD_ALLOC_PTR(ms->ms_client_seq);
3629 if (ms->ms_client_seq == NULL)
3630 GOTO(out_seq_fini, rc = -ENOMEM);
3632 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3633 if (prefix == NULL) {
3634 OBD_FREE_PTR(ms->ms_client_seq);
3635 GOTO(out_seq_fini, rc = -ENOMEM);
3638 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
3642 * Init seq-controller client after seq-controller server is
3643 * ready. Pass ms->ms_control_seq to it for direct talking.
3645 rc = seq_client_init(ms->ms_client_seq, NULL,
3646 LUSTRE_SEQ_METADATA, prefix,
3647 ms->ms_control_seq);
3648 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3651 GOTO(out_seq_fini, rc);
3654 /* Init seq-server on local MDT */
3655 LASSERT(ms->ms_server_seq == NULL);
3657 OBD_ALLOC_PTR(ms->ms_server_seq);
3658 if (ms->ms_server_seq == NULL)
3659 GOTO(out_seq_fini, rc = -ENOMEM);
3661 rc = seq_server_init(ms->ms_server_seq,
3662 m->mdt_bottom, uuid,
3667 GOTO(out_seq_fini, rc = -ENOMEM);
3669 /* Assign seq-controller client to local seq-server. */
3670 if (ms->ms_node_id == 0) {
3671 LASSERT(ms->ms_client_seq != NULL);
3673 rc = seq_server_set_cli(ms->ms_server_seq,
3681 mdt_seq_fini(env, m);
3686 * Init client sequence manager which is used by local MDS to talk to sequence
3687 * controller on remote node.
3689 static int mdt_seq_init_cli(const struct lu_env *env,
3690 struct mdt_device *m,
3691 struct lustre_cfg *cfg)
3693 struct md_site *ms = mdt_md_site(m);
3694 struct obd_device *mdc;
3695 struct obd_uuid *uuidp, *mdcuuidp;
3696 char *uuid_str, *mdc_uuid_str;
3699 struct mdt_thread_info *info;
3700 char *p, *index_string = lustre_cfg_string(cfg, 2);
3703 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3704 uuidp = &info->mti_u.uuid[0];
3705 mdcuuidp = &info->mti_u.uuid[1];
3707 LASSERT(index_string);
3709 index = simple_strtol(index_string, &p, 10);
3711 CERROR("Invalid index in lustre_cgf, offset 2\n");
3715 /* check if this is adding the first MDC and controller is not yet
3717 if (index != 0 || ms->ms_client_seq)
3720 uuid_str = lustre_cfg_string(cfg, 1);
3721 mdc_uuid_str = lustre_cfg_string(cfg, 4);
3722 obd_str2uuid(uuidp, uuid_str);
3723 obd_str2uuid(mdcuuidp, mdc_uuid_str);
3725 mdc = class_find_client_obd(uuidp, LUSTRE_MDC_NAME, mdcuuidp);
3727 CERROR("can't find controller MDC by uuid %s\n",
3730 } else if (!mdc->obd_set_up) {
3731 CERROR("target %s not set up\n", mdc->obd_name);
3734 LASSERT(ms->ms_control_exp);
3735 OBD_ALLOC_PTR(ms->ms_client_seq);
3736 if (ms->ms_client_seq != NULL) {
3739 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3743 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
3746 rc = seq_client_init(ms->ms_client_seq,
3748 LUSTRE_SEQ_METADATA,
3750 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3757 LASSERT(ms->ms_server_seq != NULL);
3758 rc = seq_server_set_cli(ms->ms_server_seq, ms->ms_client_seq,
3765 static void mdt_seq_fini_cli(struct mdt_device *m)
3771 ms = mdt_md_site(m);
3774 if (ms->ms_server_seq)
3775 seq_server_set_cli(ms->ms_server_seq,
3778 if (ms->ms_control_exp) {
3779 class_export_put(ms->ms_control_exp);
3780 ms->ms_control_exp = NULL;
3789 static int mdt_fld_fini(const struct lu_env *env,
3790 struct mdt_device *m)
3792 struct md_site *ms = mdt_md_site(m);
3795 if (ms && ms->ms_server_fld) {
3796 fld_server_fini(ms->ms_server_fld, env);
3797 OBD_FREE_PTR(ms->ms_server_fld);
3798 ms->ms_server_fld = NULL;
3804 static int mdt_fld_init(const struct lu_env *env,
3806 struct mdt_device *m)
3812 ms = mdt_md_site(m);
3814 OBD_ALLOC_PTR(ms->ms_server_fld);
3815 if (ms->ms_server_fld == NULL)
3816 RETURN(rc = -ENOMEM);
3818 rc = fld_server_init(ms->ms_server_fld,
3819 m->mdt_bottom, uuid,
3820 env, ms->ms_node_id);
3822 OBD_FREE_PTR(ms->ms_server_fld);
3823 ms->ms_server_fld = NULL;
3830 /* device init/fini methods */
3831 static void mdt_stop_ptlrpc_service(struct mdt_device *m)
3834 if (m->mdt_regular_service != NULL) {
3835 ptlrpc_unregister_service(m->mdt_regular_service);
3836 m->mdt_regular_service = NULL;
3838 if (m->mdt_readpage_service != NULL) {
3839 ptlrpc_unregister_service(m->mdt_readpage_service);
3840 m->mdt_readpage_service = NULL;
3842 if (m->mdt_xmds_service != NULL) {
3843 ptlrpc_unregister_service(m->mdt_xmds_service);
3844 m->mdt_xmds_service = NULL;
3846 if (m->mdt_setattr_service != NULL) {
3847 ptlrpc_unregister_service(m->mdt_setattr_service);
3848 m->mdt_setattr_service = NULL;
3850 if (m->mdt_mdsc_service != NULL) {
3851 ptlrpc_unregister_service(m->mdt_mdsc_service);
3852 m->mdt_mdsc_service = NULL;
3854 if (m->mdt_mdss_service != NULL) {
3855 ptlrpc_unregister_service(m->mdt_mdss_service);
3856 m->mdt_mdss_service = NULL;
3858 if (m->mdt_dtss_service != NULL) {
3859 ptlrpc_unregister_service(m->mdt_dtss_service);
3860 m->mdt_dtss_service = NULL;
3862 if (m->mdt_fld_service != NULL) {
3863 ptlrpc_unregister_service(m->mdt_fld_service);
3864 m->mdt_fld_service = NULL;
3869 static int mdt_start_ptlrpc_service(struct mdt_device *m)
3872 static struct ptlrpc_service_conf conf;
3873 cfs_proc_dir_entry_t *procfs_entry;
3876 procfs_entry = m->mdt_md_dev.md_lu_dev.ld_obd->obd_proc_entry;
3878 conf = (typeof(conf)) {
3879 .psc_nbufs = MDS_NBUFS,
3880 .psc_bufsize = MDS_BUFSIZE,
3881 .psc_max_req_size = MDS_MAXREQSIZE,
3882 .psc_max_reply_size = MDS_MAXREPSIZE,
3883 .psc_req_portal = MDS_REQUEST_PORTAL,
3884 .psc_rep_portal = MDC_REPLY_PORTAL,
3885 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3887 * We'd like to have a mechanism to set this on a per-device
3888 * basis, but alas...
3890 .psc_min_threads = mdt_min_threads,
3891 .psc_max_threads = mdt_max_threads,
3892 .psc_ctx_tags = LCT_MD_THREAD
3895 m->mdt_ldlm_client = &m->mdt_md_dev.md_lu_dev.ld_obd->obd_ldlm_client;
3896 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
3897 "mdt_ldlm_client", m->mdt_ldlm_client);
3899 m->mdt_regular_service =
3900 ptlrpc_init_svc_conf(&conf, mdt_regular_handle, LUSTRE_MDT_NAME,
3901 procfs_entry, target_print_req,
3903 if (m->mdt_regular_service == NULL)
3906 rc = ptlrpc_start_threads(NULL, m->mdt_regular_service);
3908 GOTO(err_mdt_svc, rc);
3911 * readpage service configuration. Parameters have to be adjusted,
3914 conf = (typeof(conf)) {
3915 .psc_nbufs = MDS_NBUFS,
3916 .psc_bufsize = MDS_BUFSIZE,
3917 .psc_max_req_size = MDS_MAXREQSIZE,
3918 .psc_max_reply_size = MDS_MAXREPSIZE,
3919 .psc_req_portal = MDS_READPAGE_PORTAL,
3920 .psc_rep_portal = MDC_REPLY_PORTAL,
3921 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3922 .psc_min_threads = mdt_min_threads,
3923 .psc_max_threads = mdt_max_threads,
3924 .psc_ctx_tags = LCT_MD_THREAD
3926 m->mdt_readpage_service =
3927 ptlrpc_init_svc_conf(&conf, mdt_readpage_handle,
3928 LUSTRE_MDT_NAME "_readpage",
3929 procfs_entry, target_print_req,"mdt_rdpg");
3931 if (m->mdt_readpage_service == NULL) {
3932 CERROR("failed to start readpage service\n");
3933 GOTO(err_mdt_svc, rc = -ENOMEM);
3936 rc = ptlrpc_start_threads(NULL, m->mdt_readpage_service);
3939 * setattr service configuration.
3941 conf = (typeof(conf)) {
3942 .psc_nbufs = MDS_NBUFS,
3943 .psc_bufsize = MDS_BUFSIZE,
3944 .psc_max_req_size = MDS_MAXREQSIZE,
3945 .psc_max_reply_size = MDS_MAXREPSIZE,
3946 .psc_req_portal = MDS_SETATTR_PORTAL,
3947 .psc_rep_portal = MDC_REPLY_PORTAL,
3948 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3949 .psc_min_threads = mdt_min_threads,
3950 .psc_max_threads = mdt_max_threads,
3951 .psc_ctx_tags = LCT_MD_THREAD
3954 m->mdt_setattr_service =
3955 ptlrpc_init_svc_conf(&conf, mdt_regular_handle,
3956 LUSTRE_MDT_NAME "_setattr",
3957 procfs_entry, target_print_req,"mdt_attr");
3959 if (!m->mdt_setattr_service) {
3960 CERROR("failed to start setattr service\n");
3961 GOTO(err_mdt_svc, rc = -ENOMEM);
3964 rc = ptlrpc_start_threads(NULL, m->mdt_setattr_service);
3966 GOTO(err_mdt_svc, rc);
3969 * sequence controller service configuration
3971 conf = (typeof(conf)) {
3972 .psc_nbufs = MDS_NBUFS,
3973 .psc_bufsize = MDS_BUFSIZE,
3974 .psc_max_req_size = SEQ_MAXREQSIZE,
3975 .psc_max_reply_size = SEQ_MAXREPSIZE,
3976 .psc_req_portal = SEQ_CONTROLLER_PORTAL,
3977 .psc_rep_portal = MDC_REPLY_PORTAL,
3978 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3979 .psc_min_threads = mdt_min_threads,
3980 .psc_max_threads = mdt_max_threads,
3981 .psc_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
3984 m->mdt_mdsc_service =
3985 ptlrpc_init_svc_conf(&conf, mdt_mdsc_handle,
3986 LUSTRE_MDT_NAME"_mdsc",
3987 procfs_entry, target_print_req,"mdt_mdsc");
3988 if (!m->mdt_mdsc_service) {
3989 CERROR("failed to start seq controller service\n");
3990 GOTO(err_mdt_svc, rc = -ENOMEM);
3993 rc = ptlrpc_start_threads(NULL, m->mdt_mdsc_service);
3995 GOTO(err_mdt_svc, rc);
3998 * metadata sequence server service configuration
4000 conf = (typeof(conf)) {
4001 .psc_nbufs = MDS_NBUFS,
4002 .psc_bufsize = MDS_BUFSIZE,
4003 .psc_max_req_size = SEQ_MAXREQSIZE,
4004 .psc_max_reply_size = SEQ_MAXREPSIZE,
4005 .psc_req_portal = SEQ_METADATA_PORTAL,
4006 .psc_rep_portal = MDC_REPLY_PORTAL,
4007 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4008 .psc_min_threads = mdt_min_threads,
4009 .psc_max_threads = mdt_max_threads,
4010 .psc_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
4013 m->mdt_mdss_service =
4014 ptlrpc_init_svc_conf(&conf, mdt_mdss_handle,
4015 LUSTRE_MDT_NAME"_mdss",
4016 procfs_entry, target_print_req,"mdt_mdss");
4017 if (!m->mdt_mdss_service) {
4018 CERROR("failed to start metadata seq server service\n");
4019 GOTO(err_mdt_svc, rc = -ENOMEM);
4022 rc = ptlrpc_start_threads(NULL, m->mdt_mdss_service);
4024 GOTO(err_mdt_svc, rc);
4028 * Data sequence server service configuration. We want to have really
4029 * cluster-wide sequences space. This is why we start only one sequence
4030 * controller which manages space.
4032 conf = (typeof(conf)) {
4033 .psc_nbufs = MDS_NBUFS,
4034 .psc_bufsize = MDS_BUFSIZE,
4035 .psc_max_req_size = SEQ_MAXREQSIZE,
4036 .psc_max_reply_size = SEQ_MAXREPSIZE,
4037 .psc_req_portal = SEQ_DATA_PORTAL,
4038 .psc_rep_portal = OSC_REPLY_PORTAL,
4039 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4040 .psc_min_threads = mdt_min_threads,
4041 .psc_max_threads = mdt_max_threads,
4042 .psc_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
4045 m->mdt_dtss_service =
4046 ptlrpc_init_svc_conf(&conf, mdt_dtss_handle,
4047 LUSTRE_MDT_NAME"_dtss",
4048 procfs_entry, target_print_req,"mdt_dtss");
4049 if (!m->mdt_dtss_service) {
4050 CERROR("failed to start data seq server service\n");
4051 GOTO(err_mdt_svc, rc = -ENOMEM);
4054 rc = ptlrpc_start_threads(NULL, m->mdt_dtss_service);
4056 GOTO(err_mdt_svc, rc);
4058 /* FLD service start */
4059 conf = (typeof(conf)) {
4060 .psc_nbufs = MDS_NBUFS,
4061 .psc_bufsize = MDS_BUFSIZE,
4062 .psc_max_req_size = FLD_MAXREQSIZE,
4063 .psc_max_reply_size = FLD_MAXREPSIZE,
4064 .psc_req_portal = FLD_REQUEST_PORTAL,
4065 .psc_rep_portal = MDC_REPLY_PORTAL,
4066 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4067 .psc_min_threads = mdt_min_threads,
4068 .psc_max_threads = mdt_max_threads,
4069 .psc_ctx_tags = LCT_DT_THREAD|LCT_MD_THREAD
4072 m->mdt_fld_service =
4073 ptlrpc_init_svc_conf(&conf, mdt_fld_handle,
4074 LUSTRE_MDT_NAME"_fld",
4075 procfs_entry, target_print_req, "mdt_fld");
4076 if (!m->mdt_fld_service) {
4077 CERROR("failed to start fld service\n");
4078 GOTO(err_mdt_svc, rc = -ENOMEM);
4081 rc = ptlrpc_start_threads(NULL, m->mdt_fld_service);
4083 GOTO(err_mdt_svc, rc);
4086 * mds-mds service configuration. Separate portal is used to allow
4087 * mds-mds requests be not blocked during recovery.
4089 conf = (typeof(conf)) {
4090 .psc_nbufs = MDS_NBUFS,
4091 .psc_bufsize = MDS_BUFSIZE,
4092 .psc_max_req_size = MDS_MAXREQSIZE,
4093 .psc_max_reply_size = MDS_MAXREPSIZE,
4094 .psc_req_portal = MDS_MDS_PORTAL,
4095 .psc_rep_portal = MDC_REPLY_PORTAL,
4096 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
4097 .psc_min_threads = mdt_min_threads,
4098 .psc_max_threads = mdt_max_threads,
4099 .psc_ctx_tags = LCT_MD_THREAD
4101 m->mdt_xmds_service =
4102 ptlrpc_init_svc_conf(&conf, mdt_xmds_handle,
4103 LUSTRE_MDT_NAME "_mds",
4104 procfs_entry, target_print_req,"mdt_xmds");
4106 if (m->mdt_xmds_service == NULL) {
4107 CERROR("failed to start xmds service\n");
4108 GOTO(err_mdt_svc, rc = -ENOMEM);
4111 rc = ptlrpc_start_threads(NULL, m->mdt_xmds_service);
4113 GOTO(err_mdt_svc, rc);
4118 mdt_stop_ptlrpc_service(m);
4123 static void mdt_stack_fini(const struct lu_env *env,
4124 struct mdt_device *m, struct lu_device *top)
4126 struct obd_device *obd = mdt2obd_dev(m);
4127 struct lustre_cfg_bufs *bufs;
4128 struct lustre_cfg *lcfg;
4129 struct mdt_thread_info *info;
4133 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4134 LASSERT(info != NULL);
4136 bufs = &info->mti_u.bufs;
4137 /* process cleanup, pass mdt obd name to get obd umount flags */
4138 lustre_cfg_bufs_reset(bufs, obd->obd_name);
4143 lustre_cfg_bufs_set_string(bufs, 1, flags);
4144 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
4146 CERROR("Cannot alloc lcfg!\n");
4151 top->ld_ops->ldo_process_config(env, top, lcfg);
4152 lustre_cfg_free(lcfg);
4154 lu_stack_fini(env, top);
4155 m->mdt_child = NULL;
4156 m->mdt_bottom = NULL;
4159 static struct lu_device *mdt_layer_setup(struct lu_env *env,
4160 const char *typename,
4161 struct lu_device *child,
4162 struct lustre_cfg *cfg)
4164 const char *dev = lustre_cfg_string(cfg, 0);
4165 struct obd_type *type;
4166 struct lu_device_type *ldt;
4167 struct lu_device *d;
4172 type = class_get_type(typename);
4174 CERROR("Unknown type: '%s'\n", typename);
4175 GOTO(out, rc = -ENODEV);
4178 rc = lu_env_refill((struct lu_env *)env);
4180 CERROR("Failure to refill session: '%d'\n", rc);
4186 CERROR("type: '%s'\n", typename);
4187 GOTO(out_type, rc = -EINVAL);
4190 ldt->ldt_obd_type = type;
4191 d = ldt->ldt_ops->ldto_device_alloc(env, ldt, cfg);
4193 CERROR("Cannot allocate device: '%s'\n", typename);
4194 GOTO(out_type, rc = -ENODEV);
4197 LASSERT(child->ld_site);
4198 d->ld_site = child->ld_site;
4201 rc = ldt->ldt_ops->ldto_device_init(env, d, dev, child);
4203 CERROR("can't init device '%s', rc %d\n", typename, rc);
4204 GOTO(out_alloc, rc);
4207 lu_ref_add(&d->ld_reference, "lu-stack", &lu_site_init);
4212 ldt->ldt_ops->ldto_device_free(env, d);
4215 class_put_type(type);
4220 static int mdt_stack_init(struct lu_env *env,
4221 struct mdt_device *m,
4222 struct lustre_cfg *cfg,
4223 struct lustre_mount_info *lmi)
4225 struct lu_device *d = &m->mdt_md_dev.md_lu_dev;
4226 struct lu_device *tmp;
4227 struct md_device *md;
4228 struct lu_device *child_lu_dev;
4232 /* init the stack */
4233 tmp = mdt_layer_setup(env, LUSTRE_OSD_NAME, d, cfg);
4235 RETURN(PTR_ERR(tmp));
4237 m->mdt_bottom = lu2dt_dev(tmp);
4239 tmp = mdt_layer_setup(env, LUSTRE_MDD_NAME, d, cfg);
4241 GOTO(out, rc = PTR_ERR(tmp));
4246 tmp = mdt_layer_setup(env, LUSTRE_CMM_NAME, d, cfg);
4248 GOTO(out, rc = PTR_ERR(tmp));
4251 /*set mdd upcall device*/
4252 md_upcall_dev_set(md, lu2md_dev(d));
4255 /*set cmm upcall device*/
4256 md_upcall_dev_set(md, &m->mdt_md_dev);
4258 m->mdt_child = lu2md_dev(d);
4260 /* process setup config */
4261 tmp = &m->mdt_md_dev.md_lu_dev;
4262 rc = tmp->ld_ops->ldo_process_config(env, tmp, cfg);
4266 /* initialize local objects */
4267 child_lu_dev = &m->mdt_child->md_lu_dev;
4269 rc = child_lu_dev->ld_ops->ldo_prepare(env,
4270 &m->mdt_md_dev.md_lu_dev,
4273 /* fini from last known good lu_device */
4275 mdt_stack_fini(env, m, d);
4281 * setup CONFIG_ORIG context, used to access local config log.
4282 * this may need to be rewrite as part of llog rewrite for lu-api.
4284 static int mdt_obd_llog_setup(struct obd_device *obd,
4285 struct lustre_sb_info *lsi)
4289 LASSERT(obd->obd_fsops == NULL);
4291 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
4292 if (IS_ERR(obd->obd_fsops))
4293 return PTR_ERR(obd->obd_fsops);
4295 rc = fsfilt_setup(obd, lsi->lsi_srv_mnt->mnt_sb);
4297 fsfilt_put_ops(obd->obd_fsops);
4301 OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
4302 obd->obd_lvfs_ctxt.pwdmnt = lsi->lsi_srv_mnt;
4303 obd->obd_lvfs_ctxt.pwd = lsi->lsi_srv_mnt->mnt_root;
4304 obd->obd_lvfs_ctxt.fs = get_ds();
4306 rc = llog_setup(obd, &obd->obd_olg, LLOG_CONFIG_ORIG_CTXT, obd,
4307 0, NULL, &llog_lvfs_ops);
4309 CERROR("llog_setup() failed: %d\n", rc);
4310 fsfilt_put_ops(obd->obd_fsops);
4316 static void mdt_obd_llog_cleanup(struct obd_device *obd)
4318 struct llog_ctxt *ctxt;
4320 ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
4324 if (obd->obd_fsops) {
4325 fsfilt_put_ops(obd->obd_fsops);
4326 obd->obd_fsops = NULL;
4330 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
4332 struct md_device *next = m->mdt_child;
4333 struct lu_device *d = &m->mdt_md_dev.md_lu_dev;
4334 struct lu_site *ls = d->ld_site;
4335 struct obd_device *obd = mdt2obd_dev(m);
4338 target_recovery_fini(obd);
4340 ping_evictor_stop();
4342 mdt_stop_ptlrpc_service(m);
4343 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4344 mdt_obd_llog_cleanup(obd);
4345 obd_exports_barrier(obd);
4346 obd_zombie_barrier();
4347 #ifdef HAVE_QUOTA_SUPPORT
4348 next->md_ops->mdo_quota.mqo_cleanup(env, next);
4350 lut_fini(env, &m->mdt_lut);
4351 mdt_fs_cleanup(env, m);
4352 upcall_cache_cleanup(m->mdt_identity_cache);
4353 m->mdt_identity_cache = NULL;
4355 if (m->mdt_namespace != NULL) {
4356 ldlm_namespace_free(m->mdt_namespace, NULL,
4357 d->ld_obd->obd_force);
4358 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
4361 cfs_free_nidlist(&m->mdt_nosquash_nids);
4362 if (m->mdt_nosquash_str) {
4363 OBD_FREE(m->mdt_nosquash_str, m->mdt_nosquash_strlen);
4364 m->mdt_nosquash_str = NULL;
4365 m->mdt_nosquash_strlen = 0;
4368 mdt_seq_fini(env, m);
4369 mdt_seq_fini_cli(m);
4370 mdt_fld_fini(env, m);
4371 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
4373 next->md_ops->mdo_init_capa_ctxt(env, next, 0, 0, 0, NULL);
4374 cfs_timer_disarm(&m->mdt_ck_timer);
4375 mdt_ck_thread_stop(m);
4380 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4382 lprocfs_free_per_client_stats(obd);
4383 lprocfs_free_obd_stats(obd);
4387 struct md_site *mite;
4390 mite = lu_site2md(ls);
4394 LASSERT(cfs_atomic_read(&d->ld_ref) == 0);
4399 static int mdt_adapt_sptlrpc_conf(struct obd_device *obd, int initial)
4401 struct mdt_device *m = mdt_dev(obd->obd_lu_dev);
4402 struct sptlrpc_rule_set tmp_rset;
4405 sptlrpc_rule_set_init(&tmp_rset);
4406 rc = sptlrpc_conf_target_get_rules(obd, &tmp_rset, initial);
4408 CERROR("mdt %s: failed get sptlrpc rules: %d\n",
4413 sptlrpc_target_update_exp_flavor(obd, &tmp_rset);
4415 cfs_write_lock(&m->mdt_sptlrpc_lock);
4416 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
4417 m->mdt_sptlrpc_rset = tmp_rset;
4418 cfs_write_unlock(&m->mdt_sptlrpc_lock);
4423 static void fsoptions_to_mdt_flags(struct mdt_device *m, char *options)
4427 m->mdt_opts.mo_mds_capa = 1;
4428 m->mdt_opts.mo_oss_capa = 1;
4429 #ifdef CONFIG_FS_POSIX_ACL
4430 /* ACLs should be enabled by default (b=13829) */
4431 m->mdt_opts.mo_acl = 1;
4432 LCONSOLE_INFO("Enabling ACL\n");
4434 m->mdt_opts.mo_acl = 0;
4435 LCONSOLE_INFO("Disabling ACL\n");
4444 while (*p && *p != ',')
4448 if ((len == sizeof("user_xattr") - 1) &&
4449 (memcmp(options, "user_xattr", len) == 0)) {
4450 m->mdt_opts.mo_user_xattr = 1;
4451 LCONSOLE_INFO("Enabling user_xattr\n");
4452 } else if ((len == sizeof("nouser_xattr") - 1) &&
4453 (memcmp(options, "nouser_xattr", len) == 0)) {
4454 m->mdt_opts.mo_user_xattr = 0;
4455 LCONSOLE_INFO("Disabling user_xattr\n");
4456 } else if ((len == sizeof("noacl") - 1) &&
4457 (memcmp(options, "noacl", len) == 0)) {
4458 m->mdt_opts.mo_acl = 0;
4459 LCONSOLE_INFO("Disabling ACL\n");
4466 int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4468 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4469 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4471 struct mdt_thread_info *info;
4472 struct obd_device *obd;
4473 const char *dev = lustre_cfg_string(cfg, 0);
4474 const char *num = lustre_cfg_string(cfg, 2);
4475 struct lustre_mount_info *lmi = NULL;
4476 struct lustre_sb_info *lsi;
4477 struct lustre_disk_data *ldd;
4479 struct md_site *mite;
4480 const char *identity_upcall = "NONE";
4481 #ifdef HAVE_QUOTA_SUPPORT
4482 struct md_device *next;
4488 md_device_init(&m->mdt_md_dev, ldt);
4490 * Environment (env) might be missing mdt_thread_key values at that
4491 * point, if device is allocated when mdt_thread_key is in QUIESCENT
4494 * Usually device allocation path doesn't use module key values, but
4495 * mdt has to do a lot of work here, so allocate key value.
4497 rc = lu_env_refill((struct lu_env *)env);
4501 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4502 LASSERT(info != NULL);
4504 obd = class_name2obd(dev);
4505 LASSERT(obd != NULL);
4507 m->mdt_max_mdsize = MAX_MD_SIZE;
4508 m->mdt_max_cookiesize = sizeof(struct llog_cookie);
4509 m->mdt_som_conf = 0;
4511 m->mdt_opts.mo_user_xattr = 0;
4512 m->mdt_opts.mo_acl = 0;
4513 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
4514 lmi = server_get_mount_2(dev);
4516 CERROR("Cannot get mount info for %s!\n", dev);
4519 lsi = s2lsi(lmi->lmi_sb);
4520 fsoptions_to_mdt_flags(m, lsi->lsi_lmd->lmd_opts);
4521 /* CMD is supported only in IAM mode */
4524 node_id = simple_strtol(num, NULL, 10);
4525 if (!(ldd->ldd_flags & LDD_F_IAM_DIR) && node_id) {
4526 CERROR("CMD Operation not allowed in IOP mode\n");
4527 GOTO(err_lmi, rc = -EINVAL);
4531 cfs_rwlock_init(&m->mdt_sptlrpc_lock);
4532 sptlrpc_rule_set_init(&m->mdt_sptlrpc_rset);
4534 cfs_spin_lock_init(&m->mdt_ioepoch_lock);
4535 m->mdt_opts.mo_compat_resname = 0;
4536 m->mdt_capa_timeout = CAPA_TIMEOUT;
4537 m->mdt_capa_alg = CAPA_HMAC_ALG_SHA1;
4538 m->mdt_ck_timeout = CAPA_KEY_TIMEOUT;
4539 m->mdt_squash_uid = 0;
4540 m->mdt_squash_gid = 0;
4541 CFS_INIT_LIST_HEAD(&m->mdt_nosquash_nids);
4542 m->mdt_nosquash_str = NULL;
4543 m->mdt_nosquash_strlen = 0;
4544 cfs_init_rwsem(&m->mdt_squash_sem);
4546 OBD_ALLOC_PTR(mite);
4548 GOTO(err_lmi, rc = -ENOMEM);
4552 m->mdt_md_dev.md_lu_dev.ld_ops = &mdt_lu_ops;
4553 m->mdt_md_dev.md_lu_dev.ld_obd = obd;
4554 /* set this lu_device to obd, because error handling need it */
4555 obd->obd_lu_dev = &m->mdt_md_dev.md_lu_dev;
4557 rc = lu_site_init(s, &m->mdt_md_dev.md_lu_dev);
4559 CERROR("Can't init lu_site, rc %d\n", rc);
4560 GOTO(err_free_site, rc);
4563 rc = mdt_procfs_init(m, dev);
4565 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
4566 GOTO(err_fini_proc, rc);
4569 /* set server index */
4570 lu_site2md(s)->ms_node_id = node_id;
4572 /* failover is the default
4573 * FIXME: we do not failout mds0/mgs, which may cause some problems.
4574 * assumed whose ms_node_id == 0 XXX
4576 obd->obd_replayable = 1;
4577 /* No connection accepted until configurations will finish */
4578 obd->obd_no_conn = 1;
4580 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
4581 char *str = lustre_cfg_string(cfg, 4);
4582 if (strchr(str, 'n')) {
4583 CWARN("%s: recovery disabled\n", obd->obd_name);
4584 obd->obd_replayable = 0;
4588 /* init the stack */
4589 rc = mdt_stack_init((struct lu_env *)env, m, cfg, lmi);
4591 CERROR("Can't init device stack, rc %d\n", rc);
4592 GOTO(err_fini_proc, rc);
4595 rc = lut_init(env, &m->mdt_lut, obd, m->mdt_bottom);
4597 GOTO(err_fini_stack, rc);
4599 rc = mdt_fld_init(env, obd->obd_name, m);
4603 rc = mdt_seq_init(env, obd->obd_name, m);
4605 GOTO(err_fini_fld, rc);
4607 snprintf(info->mti_u.ns_name, sizeof info->mti_u.ns_name,
4608 LUSTRE_MDT_NAME"-%p", m);
4609 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
4610 LDLM_NAMESPACE_SERVER,
4611 LDLM_NAMESPACE_GREEDY);
4612 if (m->mdt_namespace == NULL)
4613 GOTO(err_fini_seq, rc = -ENOMEM);
4615 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
4616 /* set obd_namespace for compatibility with old code */
4617 obd->obd_namespace = m->mdt_namespace;
4619 /* XXX: to support suppgid for ACL, we enable identity_upcall
4620 * by default, otherwise, maybe got unexpected -EACCESS. */
4621 if (m->mdt_opts.mo_acl)
4622 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
4624 m->mdt_identity_cache = upcall_cache_init(obd->obd_name, identity_upcall,
4625 &mdt_identity_upcall_cache_ops);
4626 if (IS_ERR(m->mdt_identity_cache)) {
4627 rc = PTR_ERR(m->mdt_identity_cache);
4628 m->mdt_identity_cache = NULL;
4629 GOTO(err_free_ns, rc);
4632 cfs_timer_init(&m->mdt_ck_timer, mdt_ck_timer_callback, m);
4634 rc = mdt_ck_thread_start(m);
4636 GOTO(err_free_ns, rc);
4638 rc = mdt_fs_setup(env, m, obd, lsi);
4642 rc = mdt_obd_llog_setup(obd, lsi);
4644 GOTO(err_fs_cleanup, rc);
4646 rc = mdt_llog_ctxt_clone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4648 GOTO(err_llog_cleanup, rc);
4650 mdt_adapt_sptlrpc_conf(obd, 1);
4652 #ifdef HAVE_QUOTA_SUPPORT
4653 next = m->mdt_child;
4654 rc = next->md_ops->mdo_quota.mqo_setup(env, next, lmi->lmi_mnt);
4656 GOTO(err_llog_cleanup, rc);
4659 server_put_mount_2(dev, lmi->lmi_mnt);
4662 target_recovery_init(&m->mdt_lut, mdt_recovery_handle);
4664 rc = mdt_start_ptlrpc_service(m);
4666 GOTO(err_recovery, rc);
4668 ping_evictor_start();
4670 rc = lu_site_init_finish(s);
4672 GOTO(err_stop_service, rc);
4674 if (obd->obd_recovering == 0)
4675 mdt_postrecov(env, m);
4677 mdt_init_capa_ctxt(env, m);
4679 /* Reduce the initial timeout on an MDS because it doesn't need such
4680 * a long timeout as an OST does. Adaptive timeouts will adjust this
4681 * value appropriately. */
4682 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
4683 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
4688 ping_evictor_stop();
4689 mdt_stop_ptlrpc_service(m);
4691 target_recovery_fini(obd);
4692 #ifdef HAVE_QUOTA_SUPPORT
4693 next->md_ops->mdo_quota.mqo_cleanup(env, next);
4696 mdt_llog_ctxt_unclone(env, m, LLOG_CHANGELOG_ORIG_CTXT);
4697 mdt_obd_llog_cleanup(obd);
4699 mdt_fs_cleanup(env, m);
4701 cfs_timer_disarm(&m->mdt_ck_timer);
4702 mdt_ck_thread_stop(m);
4704 upcall_cache_cleanup(m->mdt_identity_cache);
4705 m->mdt_identity_cache = NULL;
4706 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
4707 obd->obd_namespace = m->mdt_namespace = NULL;
4709 mdt_seq_fini(env, m);
4711 mdt_fld_fini(env, m);
4713 lut_fini(env, &m->mdt_lut);
4715 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4723 server_put_mount_2(dev, lmi->lmi_mnt);
4727 /* used by MGS to process specific configurations */
4728 static int mdt_process_config(const struct lu_env *env,
4729 struct lu_device *d, struct lustre_cfg *cfg)
4731 struct mdt_device *m = mdt_dev(d);
4732 struct md_device *md_next = m->mdt_child;
4733 struct lu_device *next = md2lu_dev(md_next);
4737 switch (cfg->lcfg_command) {
4739 struct lprocfs_static_vars lvars;
4740 struct obd_device *obd = d->ld_obd;
4743 * For interoperability between 1.8 and 2.0,
4744 * skip old "mdt.group_upcall" param.
4747 char *param = lustre_cfg_string(cfg, 1);
4748 if (param && !strncmp("mdt.group_upcall", param, 16)) {
4749 CWARN("For 1.8 interoperability, skip this"
4750 " mdt.group_upcall. It is obsolete\n");
4755 lprocfs_mdt_init_vars(&lvars);
4756 rc = class_process_proc_param(PARAM_MDT, lvars.obd_vars,
4758 if (rc > 0 || rc == -ENOSYS)
4759 /* we don't understand; pass it on */
4760 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4765 * Add mdc hook to get first MDT uuid and connect it to
4766 * ls->controller to use for seq manager.
4768 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4770 CERROR("Can't add mdc, rc %d\n", rc);
4772 rc = mdt_seq_init_cli(env, mdt_dev(d), cfg);
4775 /* others are passed further */
4776 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4782 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
4783 const struct lu_object_header *hdr,
4784 struct lu_device *d)
4786 struct mdt_object *mo;
4792 struct lu_object *o;
4793 struct lu_object_header *h;
4795 o = &mo->mot_obj.mo_lu;
4796 h = &mo->mot_header;
4797 lu_object_header_init(h);
4798 lu_object_init(o, h, d);
4799 lu_object_add_top(h, o);
4800 o->lo_ops = &mdt_obj_ops;
4801 cfs_sema_init(&mo->mot_ioepoch_sem, 1);
4807 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
4808 const struct lu_object_conf *unused)
4810 struct mdt_device *d = mdt_dev(o->lo_dev);
4811 struct lu_device *under;
4812 struct lu_object *below;
4816 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
4817 PFID(lu_object_fid(o)));
4819 under = &d->mdt_child->md_lu_dev;
4820 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
4821 if (below != NULL) {
4822 lu_object_add(o, below);
4829 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
4831 struct mdt_object *mo = mdt_obj(o);
4832 struct lu_object_header *h;
4836 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
4837 PFID(lu_object_fid(o)));
4840 lu_object_header_fini(h);
4845 static int mdt_object_print(const struct lu_env *env, void *cookie,
4846 lu_printer_t p, const struct lu_object *o)
4848 struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
4849 return (*p)(env, cookie, LUSTRE_MDT_NAME"-object@%p(ioepoch="LPU64" "
4850 "flags="LPX64", epochcount=%d, writecount=%d)",
4851 mdto, mdto->mot_ioepoch, mdto->mot_flags,
4852 mdto->mot_ioepoch_count, mdto->mot_writecount);
4855 static const struct lu_device_operations mdt_lu_ops = {
4856 .ldo_object_alloc = mdt_object_alloc,
4857 .ldo_process_config = mdt_process_config,
4860 static const struct lu_object_operations mdt_obj_ops = {
4861 .loo_object_init = mdt_object_init,
4862 .loo_object_free = mdt_object_free,
4863 .loo_object_print = mdt_object_print
4866 static int mdt_obd_set_info_async(struct obd_export *exp,
4867 __u32 keylen, void *key,
4868 __u32 vallen, void *val,
4869 struct ptlrpc_request_set *set)
4871 struct obd_device *obd = exp->exp_obd;
4877 if (KEY_IS(KEY_SPTLRPC_CONF)) {
4878 rc = mdt_adapt_sptlrpc_conf(obd, 0);
4885 /* mds_connect_internal */
4886 static int mdt_connect_internal(struct obd_export *exp,
4887 struct mdt_device *mdt,
4888 struct obd_connect_data *data)
4891 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
4892 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
4894 /* If no known bits (which should not happen, probably,
4895 as everybody should support LOOKUP and UPDATE bits at least)
4896 revert to compat mode with plain locks. */
4897 if (!data->ocd_ibits_known &&
4898 data->ocd_connect_flags & OBD_CONNECT_IBITS)
4899 data->ocd_connect_flags &= ~OBD_CONNECT_IBITS;
4901 if (!mdt->mdt_opts.mo_acl)
4902 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
4904 if (!mdt->mdt_opts.mo_user_xattr)
4905 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
4907 if (!mdt->mdt_som_conf)
4908 data->ocd_connect_flags &= ~OBD_CONNECT_SOM;
4910 cfs_spin_lock(&exp->exp_lock);
4911 exp->exp_connect_flags = data->ocd_connect_flags;
4912 cfs_spin_unlock(&exp->exp_lock);
4913 data->ocd_version = LUSTRE_VERSION_CODE;
4914 exp->exp_mdt_data.med_ibits_known = data->ocd_ibits_known;
4918 if (mdt->mdt_opts.mo_acl &&
4919 ((exp->exp_connect_flags & OBD_CONNECT_ACL) == 0)) {
4920 CWARN("%s: MDS requires ACL support but client does not\n",
4921 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4926 if ((exp->exp_connect_flags & OBD_CONNECT_FID) == 0) {
4927 CWARN("%s: MDS requires FID support, but client not\n",
4928 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4932 if (mdt->mdt_som_conf && !exp_connect_som(exp) &&
4933 !(exp->exp_connect_flags & OBD_CONNECT_MDS_MDS)) {
4934 CWARN("%s: MDS has SOM enabled, but client does not support "
4935 "it\n", mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4942 static int mdt_connect_check_sptlrpc(struct mdt_device *mdt,
4943 struct obd_export *exp,
4944 struct ptlrpc_request *req)
4946 struct sptlrpc_flavor flvr;
4949 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
4950 cfs_read_lock(&mdt->mdt_sptlrpc_lock);
4951 sptlrpc_target_choose_flavor(&mdt->mdt_sptlrpc_rset,
4955 cfs_read_unlock(&mdt->mdt_sptlrpc_lock);
4957 cfs_spin_lock(&exp->exp_lock);
4959 exp->exp_sp_peer = req->rq_sp_from;
4960 exp->exp_flvr = flvr;
4962 if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
4963 exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
4964 CERROR("unauthorized rpc flavor %x from %s, "
4965 "expect %x\n", req->rq_flvr.sf_rpc,
4966 libcfs_nid2str(req->rq_peer.nid),
4967 exp->exp_flvr.sf_rpc);
4971 cfs_spin_unlock(&exp->exp_lock);
4973 if (exp->exp_sp_peer != req->rq_sp_from) {
4974 CERROR("RPC source %s doesn't match %s\n",
4975 sptlrpc_part2name(req->rq_sp_from),
4976 sptlrpc_part2name(exp->exp_sp_peer));
4979 rc = sptlrpc_target_export_check(exp, req);
4986 /* mds_connect copy */
4987 static int mdt_obd_connect(const struct lu_env *env,
4988 struct obd_export **exp, struct obd_device *obd,
4989 struct obd_uuid *cluuid,
4990 struct obd_connect_data *data,
4993 struct mdt_thread_info *info;
4994 struct lsd_client_data *lcd;
4995 struct obd_export *lexp;
4996 struct lustre_handle conn = { 0 };
4997 struct mdt_device *mdt;
4998 struct ptlrpc_request *req;
5002 LASSERT(env != NULL);
5003 if (!exp || !obd || !cluuid)
5006 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5007 req = info->mti_pill->rc_req;
5008 mdt = mdt_dev(obd->obd_lu_dev);
5010 rc = class_connect(&conn, obd, cluuid);
5014 lexp = class_conn2export(&conn);
5015 LASSERT(lexp != NULL);
5017 rc = mdt_connect_check_sptlrpc(mdt, lexp, req);
5021 rc = mdt_connect_internal(lexp, mdt, data);
5025 struct mdt_thread_info *mti;
5026 mti = lu_context_key_get(&env->le_ctx,
5028 LASSERT(mti != NULL);
5029 mti->mti_exp = lexp;
5030 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
5031 lexp->exp_mdt_data.med_lcd = lcd;
5032 rc = mdt_client_new(env, mdt);
5034 mdt_export_stats_init(obd, lexp, localdata);
5042 class_disconnect(lexp);
5049 static int mdt_obd_reconnect(const struct lu_env *env,
5050 struct obd_export *exp, struct obd_device *obd,
5051 struct obd_uuid *cluuid,
5052 struct obd_connect_data *data,
5055 struct mdt_thread_info *info;
5056 struct mdt_device *mdt;
5057 struct ptlrpc_request *req;
5061 if (exp == NULL || obd == NULL || cluuid == NULL)
5064 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5065 req = info->mti_pill->rc_req;
5066 mdt = mdt_dev(obd->obd_lu_dev);
5068 rc = mdt_connect_check_sptlrpc(mdt, exp, req);
5072 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
5074 mdt_export_stats_init(obd, exp, localdata);
5078 static int mdt_export_cleanup(struct obd_export *exp)
5080 struct mdt_export_data *med = &exp->exp_mdt_data;
5081 struct obd_device *obd = exp->exp_obd;
5082 struct mdt_device *mdt;
5083 struct mdt_thread_info *info;
5085 CFS_LIST_HEAD(closing_list);
5086 struct mdt_file_data *mfd, *n;
5090 cfs_spin_lock(&med->med_open_lock);
5091 while (!cfs_list_empty(&med->med_open_head)) {
5092 cfs_list_t *tmp = med->med_open_head.next;
5093 mfd = cfs_list_entry(tmp, struct mdt_file_data, mfd_list);
5095 /* Remove mfd handle so it can't be found again.
5096 * We are consuming the mfd_list reference here. */
5097 class_handle_unhash(&mfd->mfd_handle);
5098 cfs_list_move_tail(&mfd->mfd_list, &closing_list);
5100 cfs_spin_unlock(&med->med_open_lock);
5101 mdt = mdt_dev(obd->obd_lu_dev);
5102 LASSERT(mdt != NULL);
5104 rc = lu_env_init(&env, LCT_MD_THREAD);
5108 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5109 LASSERT(info != NULL);
5110 memset(info, 0, sizeof *info);
5111 info->mti_env = &env;
5112 info->mti_mdt = mdt;
5113 info->mti_exp = exp;
5115 if (!cfs_list_empty(&closing_list)) {
5116 struct md_attr *ma = &info->mti_attr;
5120 lmm_size = mdt->mdt_max_mdsize;
5121 OBD_ALLOC(ma->ma_lmm, lmm_size);
5122 if (ma->ma_lmm == NULL)
5123 GOTO(out_lmm, rc = -ENOMEM);
5125 cookie_size = mdt->mdt_max_cookiesize;
5126 OBD_ALLOC(ma->ma_cookie, cookie_size);
5127 if (ma->ma_cookie == NULL)
5128 GOTO(out_cookie, rc = -ENOMEM);
5130 /* Close any open files (which may also cause orphan unlinking). */
5131 cfs_list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
5132 cfs_list_del_init(&mfd->mfd_list);
5133 memset(&ma->ma_attr, 0, sizeof(ma->ma_attr));
5134 ma->ma_lmm_size = lmm_size;
5135 ma->ma_cookie_size = cookie_size;
5137 /* It is not for setattr, just tell MDD to send
5138 * DESTROY RPC to OSS if needed */
5139 ma->ma_attr_flags = MDS_CLOSE_CLEANUP;
5140 ma->ma_valid = MA_FLAGS;
5141 mdt_mfd_close(info, mfd);
5143 OBD_FREE(ma->ma_cookie, cookie_size);
5144 ma->ma_cookie = NULL;
5146 OBD_FREE(ma->ma_lmm, lmm_size);
5150 info->mti_mdt = NULL;
5151 /* cleanup client slot early */
5152 mdt_client_del(&env, mdt);
5158 static int mdt_obd_disconnect(struct obd_export *exp)
5164 class_export_get(exp);
5166 rc = server_disconnect_export(exp);
5168 CDEBUG(D_IOCTL, "server disconnect error: %d\n", rc);
5170 rc = mdt_export_cleanup(exp);
5171 class_export_put(exp);
5175 /* FIXME: Can we avoid using these two interfaces? */
5176 static int mdt_init_export(struct obd_export *exp)
5178 struct mdt_export_data *med = &exp->exp_mdt_data;
5182 CFS_INIT_LIST_HEAD(&med->med_open_head);
5183 cfs_spin_lock_init(&med->med_open_lock);
5184 cfs_sema_init(&med->med_idmap_sem, 1);
5185 med->med_idmap = NULL;
5186 cfs_spin_lock(&exp->exp_lock);
5187 exp->exp_connecting = 1;
5188 cfs_spin_unlock(&exp->exp_lock);
5189 rc = ldlm_init_export(exp);
5191 CERROR("Error %d while initializing export\n", rc);
5195 static int mdt_destroy_export(struct obd_export *exp)
5197 struct mdt_export_data *med;
5201 med = &exp->exp_mdt_data;
5202 if (exp_connect_rmtclient(exp))
5203 mdt_cleanup_idmap(&exp->exp_mdt_data);
5205 target_destroy_export(exp);
5206 ldlm_destroy_export(exp);
5208 LASSERT(cfs_list_empty(&exp->exp_outstanding_replies));
5209 LASSERT(cfs_list_empty(&exp->exp_mdt_data.med_open_head));
5210 if (obd_uuid_equals(&exp->exp_client_uuid, &exp->exp_obd->obd_uuid))
5213 lut_client_free(exp);
5217 static void mdt_allow_cli(struct mdt_device *m, unsigned int flag)
5219 if (flag & CONFIG_LOG)
5220 cfs_set_bit(MDT_FL_CFGLOG, &m->mdt_state);
5222 /* also notify active event */
5223 if (flag & CONFIG_SYNC)
5224 cfs_set_bit(MDT_FL_SYNCED, &m->mdt_state);
5226 if (cfs_test_bit(MDT_FL_CFGLOG, &m->mdt_state) &&
5227 cfs_test_bit(MDT_FL_SYNCED, &m->mdt_state)) {
5228 struct obd_device *obd = m->mdt_md_dev.md_lu_dev.ld_obd;
5230 /* Open for clients */
5231 if (obd->obd_no_conn) {
5232 cfs_spin_lock_bh(&obd->obd_processing_task_lock);
5233 obd->obd_no_conn = 0;
5234 cfs_spin_unlock_bh(&obd->obd_processing_task_lock);
5239 static int mdt_upcall(const struct lu_env *env, struct md_device *md,
5240 enum md_upcall_event ev, void *data)
5242 struct mdt_device *m = mdt_dev(&md->md_lu_dev);
5243 struct md_device *next = m->mdt_child;
5244 struct mdt_thread_info *mti;
5250 rc = next->md_ops->mdo_maxsize_get(env, next,
5252 &m->mdt_max_cookiesize);
5253 CDEBUG(D_INFO, "get max mdsize %d max cookiesize %d\n",
5254 m->mdt_max_mdsize, m->mdt_max_cookiesize);
5255 mdt_allow_cli(m, CONFIG_SYNC);
5257 (*(__u64 *)data) = m->mdt_mount_count;
5260 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
5261 mti->mti_no_need_trans = 1;
5262 CDEBUG(D_INFO, "disable mdt trans for this thread\n");
5265 /* Check that MDT is not yet configured */
5266 LASSERT(!cfs_test_bit(MDT_FL_CFGLOG, &m->mdt_state));
5268 #ifdef HAVE_QUOTA_SUPPORT
5270 if (md->md_lu_dev.ld_obd->obd_recovering == 0 &&
5271 likely(md->md_lu_dev.ld_obd->obd_stopping == 0))
5272 next->md_ops->mdo_quota.mqo_recovery(env, next);
5276 CERROR("invalid event\n");
5283 static int mdt_obd_notify(struct obd_device *host,
5284 struct obd_device *watched,
5285 enum obd_notify_event ev, void *data)
5287 struct mdt_device *mdt = mdt_dev(host->obd_lu_dev);
5288 #ifdef HAVE_QUOTA_SUPPORT
5289 struct md_device *next = mdt->mdt_child;
5294 case OBD_NOTIFY_CONFIG:
5295 mdt_allow_cli(mdt, (unsigned long)data);
5297 #ifdef HAVE_QUOTA_SUPPORT
5298 /* quota_type has been processed, we can now handle
5299 * incoming quota requests */
5300 next->md_ops->mdo_quota.mqo_notify(NULL, next);
5304 CDEBUG(D_INFO, "Unhandled notification %#x\n", ev);
5309 static int mdt_rpc_fid2path(struct mdt_thread_info *info, void *key,
5310 void *val, int vallen)
5312 struct mdt_device *mdt = mdt_dev(info->mti_exp->exp_obd->obd_lu_dev);
5313 struct getinfo_fid2path *fpout, *fpin;
5316 fpin = key + cfs_size_round(sizeof(KEY_FID2PATH));
5319 if (ptlrpc_req_need_swab(info->mti_pill->rc_req))
5320 lustre_swab_fid2path(fpin);
5322 memcpy(fpout, fpin, sizeof(*fpin));
5323 if (fpout->gf_pathlen != vallen - sizeof(*fpin))
5326 rc = mdt_fid2path(info->mti_env, mdt, fpout);
5330 static int mdt_fid2path(const struct lu_env *env, struct mdt_device *mdt,
5331 struct getinfo_fid2path *fp)
5333 struct mdt_object *obj;
5337 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
5338 PFID(&fp->gf_fid), fp->gf_recno, fp->gf_linkno);
5340 if (!fid_is_sane(&fp->gf_fid))
5343 obj = mdt_object_find(env, mdt, &fp->gf_fid);
5344 if (obj == NULL || IS_ERR(obj)) {
5345 CDEBUG(D_IOCTL, "no object "DFID": %ld\n",PFID(&fp->gf_fid),
5350 rc = lu_object_exists(&obj->mot_obj.mo_lu);
5356 mdt_object_put(env, obj);
5357 CDEBUG(D_IOCTL, "nonlocal object "DFID": %d\n",
5358 PFID(&fp->gf_fid), rc);
5362 rc = mo_path(env, md_object_next(&obj->mot_obj), fp->gf_path,
5363 fp->gf_pathlen, &fp->gf_recno, &fp->gf_linkno);
5364 mdt_object_put(env, obj);
5369 static int mdt_get_info(struct mdt_thread_info *info)
5371 struct ptlrpc_request *req = mdt_info_req(info);
5379 key = req_capsule_client_get(info->mti_pill, &RMF_GETINFO_KEY);
5381 CDEBUG(D_IOCTL, "No GETINFO key");
5384 keylen = req_capsule_get_size(info->mti_pill, &RMF_GETINFO_KEY,
5387 vallen = req_capsule_client_get(info->mti_pill, &RMF_GETINFO_VALLEN);
5388 if (vallen == NULL) {
5389 CDEBUG(D_IOCTL, "Unable to get RMF_GETINFO_VALLEN buffer");
5393 req_capsule_set_size(info->mti_pill, &RMF_GETINFO_VAL, RCL_SERVER,
5395 rc = req_capsule_server_pack(info->mti_pill);
5396 valout = req_capsule_server_get(info->mti_pill, &RMF_GETINFO_VAL);
5397 if (valout == NULL) {
5398 CDEBUG(D_IOCTL, "Unable to get get-info RPC out buffer");
5402 if (KEY_IS(KEY_FID2PATH))
5403 rc = mdt_rpc_fid2path(info, key, valout, *vallen);
5407 lustre_msg_set_status(req->rq_repmsg, rc);
5412 /* Pass the ioc down */
5413 static int mdt_ioc_child(struct lu_env *env, struct mdt_device *mdt,
5414 unsigned int cmd, int len, void *data)
5416 struct lu_context ioctl_session;
5417 struct md_device *next = mdt->mdt_child;
5421 rc = lu_context_init(&ioctl_session, LCT_SESSION);
5424 ioctl_session.lc_thread = (struct ptlrpc_thread *)cfs_current();
5425 lu_context_enter(&ioctl_session);
5426 env->le_ses = &ioctl_session;
5428 LASSERT(next->md_ops->mdo_iocontrol);
5429 rc = next->md_ops->mdo_iocontrol(env, next, cmd, len, data);
5431 lu_context_exit(&ioctl_session);
5432 lu_context_fini(&ioctl_session);
5436 static int mdt_ioc_version_get(struct mdt_thread_info *mti, void *karg)
5438 struct obd_ioctl_data *data = karg;
5439 struct lu_fid *fid = (struct lu_fid *)data->ioc_inlbuf1;
5441 struct mdt_object *obj;
5442 struct mdt_lock_handle *lh;
5445 CDEBUG(D_IOCTL, "getting version for "DFID"\n", PFID(fid));
5446 if (!fid_is_sane(fid))
5449 lh = &mti->mti_lh[MDT_LH_PARENT];
5450 mdt_lock_reg_init(lh, LCK_CR);
5452 obj = mdt_object_find_lock(mti, fid, lh, MDS_INODELOCK_UPDATE);
5454 RETURN(PTR_ERR(obj));
5456 rc = mdt_object_exists(obj);
5460 * before calling version get the correct MDS should be
5461 * fid, this is error to find remote object here
5463 CERROR("nonlocal object "DFID"\n", PFID(fid));
5464 } else if (rc == 0) {
5466 CDEBUG(D_IOCTL, "no such object: "DFID"\n", PFID(fid));
5468 version = mo_version_get(mti->mti_env, mdt_object_child(obj));
5472 *(__u64 *)data->ioc_inlbuf2 = version;
5476 mdt_object_unlock_put(mti, obj, lh, 1);
5480 /* ioctls on obd dev */
5481 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
5482 void *karg, void *uarg)
5485 struct obd_device *obd = exp->exp_obd;
5486 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
5487 struct dt_device *dt = mdt->mdt_bottom;
5491 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
5492 rc = lu_env_init(&env, LCT_MD_THREAD);
5498 rc = mdt_device_sync(&env, mdt);
5500 case OBD_IOC_SET_READONLY:
5501 dt->dd_ops->dt_ro(&env, dt);
5503 case OBD_IOC_ABORT_RECOVERY:
5504 CERROR("Aborting recovery for device %s\n", obd->obd_name);
5505 target_stop_recovery_thread(obd);
5508 case OBD_IOC_CHANGELOG_REG:
5509 case OBD_IOC_CHANGELOG_DEREG:
5510 case OBD_IOC_CHANGELOG_CLEAR:
5511 rc = mdt_ioc_child(&env, mdt, cmd, len, karg);
5513 case OBD_IOC_GET_OBJ_VERSION: {
5514 struct mdt_thread_info *mti;
5515 mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
5516 memset(mti, 0, sizeof *mti);
5517 mti->mti_env = &env;
5521 rc = mdt_ioc_version_get(mti, karg);
5525 CERROR("Not supported cmd = %d for device %s\n",
5526 cmd, obd->obd_name);
5534 int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
5536 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
5537 struct obd_device *obd = mdt2obd_dev(mdt);
5538 #ifdef HAVE_QUOTA_SUPPORT
5539 struct md_device *next = mdt->mdt_child;
5543 /* if some clients didn't participate in recovery then we can possibly
5544 * lost sequence. Now we should increase sequence for safe value */
5545 lost = obd->obd_max_recoverable_clients - obd->obd_connected_clients;
5546 mdt_seq_adjust(env, mdt, lost);
5548 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
5549 #ifdef HAVE_QUOTA_SUPPORT
5550 if (likely(obd->obd_stopping == 0))
5551 next->md_ops->mdo_quota.mqo_recovery(env, next);
5556 int mdt_obd_postrecov(struct obd_device *obd)
5561 rc = lu_env_init(&env, LCT_MD_THREAD);
5564 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
5570 * Send a copytool req to a client
5571 * Note this sends a request RPC from a server (MDT) to a client (MDC),
5572 * backwards of normal comms.
5574 int mdt_hsm_copytool_send(struct obd_export *exp)
5577 struct hsm_action_list *hal;
5578 struct hsm_action_item *hai;
5582 CWARN("%s: writing to mdc at %s\n", exp->exp_obd->obd_name,
5583 libcfs_nid2str(exp->exp_connection->c_peer.nid));
5585 len = sizeof(*lh) + sizeof(*hal) + MTI_NAME_MAXLEN +
5586 /* for mockup below */ 2 * cfs_size_round(sizeof(*hai));
5591 lh->kuc_magic = KUC_MAGIC;
5592 lh->kuc_transport = KUC_TRANSPORT_HSM;
5593 lh->kuc_msgtype = HMT_ACTION_LIST;
5594 lh->kuc_msglen = len;
5596 hal = (struct hsm_action_list *)(lh + 1);
5597 hal->hal_version = HAL_VERSION;
5598 hal->hal_archive_num = 1;
5599 obd_uuid2fsname(hal->hal_fsname, exp->exp_obd->obd_name,
5602 /* mock up an action list */
5604 hai = hai_zero(hal);
5605 hai->hai_action = HSMA_ARCHIVE;
5606 hai->hai_fid.f_oid = 0xA00A;
5607 hai->hai_len = sizeof(*hai);
5608 hai = hai_next(hai);
5609 hai->hai_action = HSMA_RESTORE;
5610 hai->hai_fid.f_oid = 0xB00B;
5611 hai->hai_len = sizeof(*hai);
5613 /* Uses the ldlm reverse import; this rpc will be seen by
5614 the ldlm_callback_handler */
5615 rc = do_set_info_async(exp->exp_imp_reverse,
5616 LDLM_SET_INFO, LUSTRE_OBD_VERSION,
5617 sizeof(KEY_HSM_COPYTOOL_SEND),
5618 KEY_HSM_COPYTOOL_SEND,
5626 static struct obd_ops mdt_obd_device_ops = {
5627 .o_owner = THIS_MODULE,
5628 .o_set_info_async = mdt_obd_set_info_async,
5629 .o_connect = mdt_obd_connect,
5630 .o_reconnect = mdt_obd_reconnect,
5631 .o_disconnect = mdt_obd_disconnect,
5632 .o_init_export = mdt_init_export,
5633 .o_destroy_export = mdt_destroy_export,
5634 .o_iocontrol = mdt_iocontrol,
5635 .o_postrecov = mdt_obd_postrecov,
5636 .o_notify = mdt_obd_notify
5639 static struct lu_device* mdt_device_fini(const struct lu_env *env,
5640 struct lu_device *d)
5642 struct mdt_device *m = mdt_dev(d);
5649 static struct lu_device *mdt_device_free(const struct lu_env *env,
5650 struct lu_device *d)
5652 struct mdt_device *m = mdt_dev(d);
5655 md_device_fini(&m->mdt_md_dev);
5660 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
5661 struct lu_device_type *t,
5662 struct lustre_cfg *cfg)
5664 struct lu_device *l;
5665 struct mdt_device *m;
5671 l = &m->mdt_md_dev.md_lu_dev;
5672 rc = mdt_init0(env, m, t, cfg);
5674 mdt_device_free(env, l);
5678 md_upcall_init(&m->mdt_md_dev, mdt_upcall);
5680 l = ERR_PTR(-ENOMEM);
5684 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
5685 LU_KEY_INIT_FINI(mdt, struct mdt_thread_info);
5687 /* context key: mdt_thread_key */
5688 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
5690 /* context key constructor/destructor: mdt_txn_key_init, mdt_txn_key_fini */
5691 LU_KEY_INIT_FINI(mdt_txn, struct mdt_txn_info);
5693 struct lu_context_key mdt_txn_key = {
5694 .lct_tags = LCT_TX_HANDLE,
5695 .lct_init = mdt_txn_key_init,
5696 .lct_fini = mdt_txn_key_fini
5699 struct md_ucred *mdt_ucred(const struct mdt_thread_info *info)
5701 return md_ucred(info->mti_env);
5705 * Enable/disable COS (Commit On Sharing).
5707 * Set/Clear the COS flag in mdt options.
5709 * \param mdt mdt device
5710 * \param val 0 disables COS, other values enable COS
5712 void mdt_enable_cos(struct mdt_device *mdt, int val)
5717 mdt->mdt_opts.mo_cos = !!val;
5718 rc = lu_env_init(&env, LCT_MD_THREAD);
5719 if (unlikely(rc != 0)) {
5720 CWARN("lu_env initialization failed with rc = %d,"
5721 "cannot sync\n", rc);
5724 mdt_device_sync(&env, mdt);
5729 * Check COS (Commit On Sharing) status.
5731 * Return COS flag status.
5733 * \param mdt mdt device
5735 int mdt_cos_is_enabled(struct mdt_device *mdt)
5737 return mdt->mdt_opts.mo_cos != 0;
5740 /* type constructor/destructor: mdt_type_init, mdt_type_fini */
5741 LU_TYPE_INIT_FINI(mdt, &mdt_thread_key, &mdt_txn_key);
5743 static struct lu_device_type_operations mdt_device_type_ops = {
5744 .ldto_init = mdt_type_init,
5745 .ldto_fini = mdt_type_fini,
5747 .ldto_start = mdt_type_start,
5748 .ldto_stop = mdt_type_stop,
5750 .ldto_device_alloc = mdt_device_alloc,
5751 .ldto_device_free = mdt_device_free,
5752 .ldto_device_fini = mdt_device_fini
5755 static struct lu_device_type mdt_device_type = {
5756 .ldt_tags = LU_DEVICE_MD,
5757 .ldt_name = LUSTRE_MDT_NAME,
5758 .ldt_ops = &mdt_device_type_ops,
5759 .ldt_ctx_tags = LCT_MD_THREAD
5762 static struct lu_local_obj_desc mdt_last_recv = {
5763 .llod_name = LAST_RCVD,
5764 .llod_oid = MDT_LAST_RECV_OID,
5768 static int __init mdt_mod_init(void)
5770 struct lprocfs_static_vars lvars;
5773 llo_local_obj_register(&mdt_last_recv);
5775 if (mdt_num_threads > 0) {
5776 if (mdt_num_threads > MDT_MAX_THREADS)
5777 mdt_num_threads = MDT_MAX_THREADS;
5778 if (mdt_num_threads < MDT_MIN_THREADS)
5779 mdt_num_threads = MDT_MIN_THREADS;
5780 mdt_max_threads = mdt_min_threads = mdt_num_threads;
5782 mdt_max_threads = MDT_MAX_THREADS;
5783 mdt_min_threads = MDT_MIN_THREADS;
5784 if (mdt_min_threads < MDT_NUM_THREADS)
5785 mdt_min_threads = MDT_NUM_THREADS;
5788 lprocfs_mdt_init_vars(&lvars);
5789 rc = class_register_type(&mdt_obd_device_ops, NULL,
5790 lvars.module_vars, LUSTRE_MDT_NAME,
5796 static void __exit mdt_mod_exit(void)
5798 llo_local_obj_unregister(&mdt_last_recv);
5799 class_unregister_type(LUSTRE_MDT_NAME);
5803 #define DEF_HNDL(prefix, base, suffix, flags, opc, fn, fmt) \
5804 [prefix ## _ ## opc - prefix ## _ ## base] = { \
5806 .mh_fail_id = OBD_FAIL_ ## prefix ## _ ## opc ## suffix, \
5807 .mh_opc = prefix ## _ ## opc, \
5808 .mh_flags = flags, \
5813 #define DEF_MDT_HNDL(flags, name, fn, fmt) \
5814 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, fmt)
5816 #define DEF_SEQ_HNDL(flags, name, fn, fmt) \
5817 DEF_HNDL(SEQ, QUERY, _NET, flags, name, fn, fmt)
5819 #define DEF_FLD_HNDL(flags, name, fn, fmt) \
5820 DEF_HNDL(FLD, QUERY, _NET, flags, name, fn, fmt)
5822 * Request with a format known in advance
5824 #define DEF_MDT_HNDL_F(flags, name, fn) \
5825 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, &RQF_MDS_ ## name)
5827 #define DEF_SEQ_HNDL_F(flags, name, fn) \
5828 DEF_HNDL(SEQ, QUERY, _NET, flags, name, fn, &RQF_SEQ_ ## name)
5830 #define DEF_FLD_HNDL_F(flags, name, fn) \
5831 DEF_HNDL(FLD, QUERY, _NET, flags, name, fn, &RQF_FLD_ ## name)
5833 * Request with a format we do not yet know
5835 #define DEF_MDT_HNDL_0(flags, name, fn) \
5836 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, NULL)
5838 static struct mdt_handler mdt_mds_ops[] = {
5839 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
5840 DEF_MDT_HNDL_F(0, DISCONNECT, mdt_disconnect),
5841 DEF_MDT_HNDL (0, SET_INFO, mdt_set_info,
5843 DEF_MDT_HNDL_F(0, GET_INFO, mdt_get_info),
5844 DEF_MDT_HNDL_F(0 |HABEO_REFERO, GETSTATUS, mdt_getstatus),
5845 DEF_MDT_HNDL_F(HABEO_CORPUS, GETATTR, mdt_getattr),
5846 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, GETATTR_NAME, mdt_getattr_name),
5847 DEF_MDT_HNDL_F(HABEO_CORPUS, GETXATTR, mdt_getxattr),
5848 DEF_MDT_HNDL_F(0 |HABEO_REFERO, STATFS, mdt_statfs),
5849 DEF_MDT_HNDL_F(0 |MUTABOR, REINT, mdt_reint),
5850 DEF_MDT_HNDL_F(HABEO_CORPUS, CLOSE, mdt_close),
5851 DEF_MDT_HNDL_F(HABEO_CORPUS, DONE_WRITING, mdt_done_writing),
5852 DEF_MDT_HNDL_F(0 |HABEO_REFERO, PIN, mdt_pin),
5853 DEF_MDT_HNDL_0(0, SYNC, mdt_sync),
5854 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, IS_SUBDIR, mdt_is_subdir),
5855 #ifdef HAVE_QUOTA_SUPPORT
5856 DEF_MDT_HNDL_F(0, QUOTACHECK, mdt_quotacheck_handle),
5857 DEF_MDT_HNDL_F(0, QUOTACTL, mdt_quotactl_handle)
5861 #define DEF_OBD_HNDL(flags, name, fn) \
5862 DEF_HNDL(OBD, PING, _NET, flags, name, fn, NULL)
5865 static struct mdt_handler mdt_obd_ops[] = {
5866 DEF_OBD_HNDL(0, PING, mdt_obd_ping),
5867 DEF_OBD_HNDL(0, LOG_CANCEL, mdt_obd_log_cancel),
5868 DEF_OBD_HNDL(0, QC_CALLBACK, mdt_obd_qc_callback)
5871 #define DEF_DLM_HNDL_0(flags, name, fn) \
5872 DEF_HNDL(LDLM, ENQUEUE, , flags, name, fn, NULL)
5873 #define DEF_DLM_HNDL_F(flags, name, fn) \
5874 DEF_HNDL(LDLM, ENQUEUE, , flags, name, fn, &RQF_LDLM_ ## name)
5876 static struct mdt_handler mdt_dlm_ops[] = {
5877 DEF_DLM_HNDL_F(HABEO_CLAVIS, ENQUEUE, mdt_enqueue),
5878 DEF_DLM_HNDL_0(HABEO_CLAVIS, CONVERT, mdt_convert),
5879 DEF_DLM_HNDL_0(0, BL_CALLBACK, mdt_bl_callback),
5880 DEF_DLM_HNDL_0(0, CP_CALLBACK, mdt_cp_callback)
5883 #define DEF_LLOG_HNDL(flags, name, fn) \
5884 DEF_HNDL(LLOG, ORIGIN_HANDLE_CREATE, _NET, flags, name, fn, NULL)
5886 static struct mdt_handler mdt_llog_ops[] = {
5887 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_CREATE, mdt_llog_create),
5888 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_NEXT_BLOCK, mdt_llog_next_block),
5889 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_READ_HEADER, mdt_llog_read_header),
5890 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_WRITE_REC, NULL),
5891 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_CLOSE, NULL),
5892 DEF_LLOG_HNDL(0, ORIGIN_CONNECT, NULL),
5893 DEF_LLOG_HNDL(0, CATINFO, NULL),
5894 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_PREV_BLOCK, mdt_llog_prev_block),
5895 DEF_LLOG_HNDL(0, ORIGIN_HANDLE_DESTROY, mdt_llog_destroy),
5898 #define DEF_SEC_CTX_HNDL(name, fn) \
5899 DEF_HNDL(SEC_CTX, INIT, _NET, 0, name, fn, NULL)
5901 static struct mdt_handler mdt_sec_ctx_ops[] = {
5902 DEF_SEC_CTX_HNDL(INIT, mdt_sec_ctx_handle),
5903 DEF_SEC_CTX_HNDL(INIT_CONT, mdt_sec_ctx_handle),
5904 DEF_SEC_CTX_HNDL(FINI, mdt_sec_ctx_handle)
5907 static struct mdt_opc_slice mdt_regular_handlers[] = {
5909 .mos_opc_start = MDS_GETATTR,
5910 .mos_opc_end = MDS_LAST_OPC,
5911 .mos_hs = mdt_mds_ops
5914 .mos_opc_start = OBD_PING,
5915 .mos_opc_end = OBD_LAST_OPC,
5916 .mos_hs = mdt_obd_ops
5919 .mos_opc_start = LDLM_ENQUEUE,
5920 .mos_opc_end = LDLM_LAST_OPC,
5921 .mos_hs = mdt_dlm_ops
5924 .mos_opc_start = LLOG_ORIGIN_HANDLE_CREATE,
5925 .mos_opc_end = LLOG_LAST_OPC,
5926 .mos_hs = mdt_llog_ops
5929 .mos_opc_start = SEC_CTX_INIT,
5930 .mos_opc_end = SEC_LAST_OPC,
5931 .mos_hs = mdt_sec_ctx_ops
5938 static struct mdt_handler mdt_readpage_ops[] = {
5939 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
5940 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, READPAGE, mdt_readpage),
5941 #ifdef HAVE_SPLIT_SUPPORT
5942 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, WRITEPAGE, mdt_writepage),
5946 * XXX: this is ugly and should be fixed one day, see mdc_close() for
5947 * detailed comments. --umka
5949 DEF_MDT_HNDL_F(HABEO_CORPUS, CLOSE, mdt_close),
5950 DEF_MDT_HNDL_F(HABEO_CORPUS, DONE_WRITING, mdt_done_writing),
5953 static struct mdt_opc_slice mdt_readpage_handlers[] = {
5955 .mos_opc_start = MDS_GETATTR,
5956 .mos_opc_end = MDS_LAST_OPC,
5957 .mos_hs = mdt_readpage_ops
5964 static struct mdt_handler mdt_xmds_ops[] = {
5965 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
5966 DEF_MDT_HNDL_F(HABEO_CORPUS , GETATTR, mdt_getattr),
5967 DEF_MDT_HNDL_F(0 | MUTABOR , REINT, mdt_reint),
5968 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, IS_SUBDIR, mdt_is_subdir),
5971 static struct mdt_opc_slice mdt_xmds_handlers[] = {
5973 .mos_opc_start = MDS_GETATTR,
5974 .mos_opc_end = MDS_LAST_OPC,
5975 .mos_hs = mdt_xmds_ops
5978 .mos_opc_start = OBD_PING,
5979 .mos_opc_end = OBD_LAST_OPC,
5980 .mos_hs = mdt_obd_ops
5983 .mos_opc_start = SEC_CTX_INIT,
5984 .mos_opc_end = SEC_LAST_OPC,
5985 .mos_hs = mdt_sec_ctx_ops
5992 static struct mdt_handler mdt_seq_ops[] = {
5993 DEF_SEQ_HNDL_F(0, QUERY, (int (*)(struct mdt_thread_info *))seq_query)
5996 static struct mdt_opc_slice mdt_seq_handlers[] = {
5998 .mos_opc_start = SEQ_QUERY,
5999 .mos_opc_end = SEQ_LAST_OPC,
6000 .mos_hs = mdt_seq_ops
6007 static struct mdt_handler mdt_fld_ops[] = {
6008 DEF_FLD_HNDL_F(0, QUERY, (int (*)(struct mdt_thread_info *))fld_query)
6011 static struct mdt_opc_slice mdt_fld_handlers[] = {
6013 .mos_opc_start = FLD_QUERY,
6014 .mos_opc_end = FLD_LAST_OPC,
6015 .mos_hs = mdt_fld_ops
6022 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
6023 MODULE_DESCRIPTION("Lustre Meta-data Target ("LUSTRE_MDT_NAME")");
6024 MODULE_LICENSE("GPL");
6026 CFS_MODULE_PARM(mdt_num_threads, "ul", ulong, 0444,
6027 "number of mdt service threads to start");
6029 cfs_module(mdt, "0.2.0", mdt_mod_init, mdt_mod_exit);