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 #include <lustre_acl.h>
71 #include <lustre_param.h>
73 mdl_mode_t mdt_mdl_lock_modes[] = {
74 [LCK_MINMODE] = MDL_MINMODE,
81 [LCK_GROUP] = MDL_GROUP
84 ldlm_mode_t mdt_dlm_lock_modes[] = {
85 [MDL_MINMODE] = LCK_MINMODE,
92 [MDL_GROUP] = LCK_GROUP
96 * Initialized in mdt_mod_init().
98 unsigned long mdt_num_threads;
100 /* ptlrpc request handler for MDT. All handlers are
101 * grouped into several slices - struct mdt_opc_slice,
102 * and stored in an array - mdt_handlers[].
105 /* The name of this handler. */
107 /* Fail id for this handler, checked at the beginning of this handler*/
109 /* Operation code for this handler */
111 /* flags are listed in enum mdt_handler_flags below. */
113 /* The actual handler function to execute. */
114 int (*mh_act)(struct mdt_thread_info *info);
115 /* Request format for this request. */
116 const struct req_format *mh_fmt;
119 enum mdt_handler_flags {
121 * struct mdt_body is passed in the incoming message, and object
122 * identified by this fid exists on disk.
124 * "habeo corpus" == "I have a body"
126 HABEO_CORPUS = (1 << 0),
128 * struct ldlm_request is passed in the incoming message.
130 * "habeo clavis" == "I have a key"
132 HABEO_CLAVIS = (1 << 1),
134 * this request has fixed reply format, so that reply message can be
135 * packed by generic code.
137 * "habeo refero" == "I have a reply"
139 HABEO_REFERO = (1 << 2),
141 * this request will modify something, so check whether the filesystem
142 * is readonly or not, then return -EROFS to client asap if necessary.
144 * "mutabor" == "I shall modify"
149 struct mdt_opc_slice {
152 struct mdt_handler *mos_hs;
155 static struct mdt_opc_slice mdt_regular_handlers[];
156 static struct mdt_opc_slice mdt_readpage_handlers[];
157 static struct mdt_opc_slice mdt_xmds_handlers[];
158 static struct mdt_opc_slice mdt_seq_handlers[];
159 static struct mdt_opc_slice mdt_fld_handlers[];
161 static struct mdt_device *mdt_dev(struct lu_device *d);
162 static int mdt_regular_handle(struct ptlrpc_request *req);
163 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags);
165 static const struct lu_object_operations mdt_obj_ops;
167 int mdt_get_disposition(struct ldlm_reply *rep, int flag)
171 return (rep->lock_policy_res1 & flag);
174 void mdt_clear_disposition(struct mdt_thread_info *info,
175 struct ldlm_reply *rep, int flag)
178 info->mti_opdata &= ~flag;
180 rep->lock_policy_res1 &= ~flag;
183 void mdt_set_disposition(struct mdt_thread_info *info,
184 struct ldlm_reply *rep, int flag)
187 info->mti_opdata |= flag;
189 rep->lock_policy_res1 |= flag;
192 void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm)
194 lh->mlh_pdo_hash = 0;
195 lh->mlh_reg_mode = lm;
196 lh->mlh_type = MDT_REG_LOCK;
199 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, ldlm_mode_t lm,
200 const char *name, int namelen)
202 lh->mlh_reg_mode = lm;
203 lh->mlh_type = MDT_PDO_LOCK;
206 LASSERT(namelen > 0);
207 lh->mlh_pdo_hash = full_name_hash(name, namelen);
209 LASSERT(namelen == 0);
210 lh->mlh_pdo_hash = 0ull;
214 static void mdt_lock_pdo_mode(struct mdt_thread_info *info, struct mdt_object *o,
215 struct mdt_lock_handle *lh)
221 * Any dir access needs couple of locks:
223 * 1) on part of dir we gonna take lookup/modify;
225 * 2) on whole dir to protect it from concurrent splitting and/or to
226 * flush client's cache for readdir().
228 * so, for a given mode and object this routine decides what lock mode
229 * to use for lock #2:
231 * 1) if caller's gonna lookup in dir then we need to protect dir from
232 * being splitted only - LCK_CR
234 * 2) if caller's gonna modify dir then we need to protect dir from
235 * being splitted and to flush cache - LCK_CW
237 * 3) if caller's gonna modify dir and that dir seems ready for
238 * splitting then we need to protect it from any type of access
239 * (lookup/modify/split) - LCK_EX --bzzz
242 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
243 LASSERT(lh->mlh_pdo_mode == LCK_MINMODE);
246 * Ask underlaying level its opinion about preferable PDO lock mode
247 * having access type passed as regular lock mode:
249 * - MDL_MINMODE means that lower layer does not want to specify lock
252 * - MDL_NL means that no PDO lock should be taken. This is used in some
253 * cases. Say, for non-splittable directories no need to use PDO locks
256 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
257 mdt_dlm_mode2mdl_mode(lh->mlh_reg_mode));
259 if (mode != MDL_MINMODE) {
260 lh->mlh_pdo_mode = mdt_mdl_mode2dlm_mode(mode);
263 * Lower layer does not want to specify locking mode. We do it
264 * our selves. No special protection is needed, just flush
265 * client's cache on modification and allow concurrent
268 switch (lh->mlh_reg_mode) {
270 lh->mlh_pdo_mode = LCK_EX;
273 lh->mlh_pdo_mode = LCK_CR;
276 lh->mlh_pdo_mode = LCK_CW;
279 CERROR("Not expected lock type (0x%x)\n",
280 (int)lh->mlh_reg_mode);
285 LASSERT(lh->mlh_pdo_mode != LCK_MINMODE);
289 static int mdt_getstatus(struct mdt_thread_info *info)
291 struct mdt_device *mdt = info->mti_mdt;
292 struct md_device *next = mdt->mdt_child;
293 struct mdt_body *repbody;
298 rc = mdt_check_ucred(info);
300 RETURN(err_serious(rc));
302 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETSTATUS_PACK))
303 RETURN(err_serious(-ENOMEM));
305 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
306 rc = next->md_ops->mdo_root_get(info->mti_env, next, &repbody->fid1);
310 repbody->valid |= OBD_MD_FLID;
312 if (mdt->mdt_opts.mo_mds_capa) {
313 struct mdt_object *root;
314 struct lustre_capa *capa;
316 root = mdt_object_find(info->mti_env, mdt, &repbody->fid1);
318 RETURN(PTR_ERR(root));
320 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
322 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
324 rc = mo_capa_get(info->mti_env, mdt_object_child(root), capa,
326 mdt_object_put(info->mti_env, root);
328 repbody->valid |= OBD_MD_FLMDSCAPA;
334 static int mdt_statfs(struct mdt_thread_info *info)
336 struct md_device *next = info->mti_mdt->mdt_child;
337 struct ptlrpc_service *svc;
338 struct obd_statfs *osfs;
343 svc = info->mti_pill->rc_req->rq_rqbd->rqbd_service;
345 /* This will trigger a watchdog timeout */
346 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_STATFS_LCW_SLEEP,
347 (MDT_SERVICE_WATCHDOG_FACTOR *
348 at_get(&svc->srv_at_estimate) / 1000) + 1);
350 rc = mdt_check_ucred(info);
352 RETURN(err_serious(rc));
354 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STATFS_PACK)) {
355 rc = err_serious(-ENOMEM);
357 osfs = req_capsule_server_get(info->mti_pill, &RMF_OBD_STATFS);
358 rc = next->md_ops->mdo_statfs(info->mti_env, next,
360 statfs_pack(osfs, &info->mti_u.ksfs);
365 void mdt_pack_size2body(struct mdt_thread_info *info, struct mdt_object *o)
368 struct lu_attr *attr = &info->mti_attr.ma_attr;
370 b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
372 /* Check if Size-on-MDS is enabled. */
373 if ((mdt_conn_flags(info) & OBD_CONNECT_SOM) &&
374 S_ISREG(attr->la_mode) && mdt_sizeonmds_enabled(o)) {
375 b->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS);
376 b->size = attr->la_size;
377 b->blocks = attr->la_blocks;
381 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
382 const struct lu_attr *attr, const struct lu_fid *fid)
384 /*XXX should pack the reply body according to lu_valid*/
385 b->valid |= OBD_MD_FLCTIME | OBD_MD_FLUID |
386 OBD_MD_FLGID | OBD_MD_FLTYPE |
387 OBD_MD_FLMODE | OBD_MD_FLNLINK | OBD_MD_FLFLAGS |
388 OBD_MD_FLATIME | OBD_MD_FLMTIME ;
390 if (!S_ISREG(attr->la_mode))
391 b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLRDEV;
393 b->atime = attr->la_atime;
394 b->mtime = attr->la_mtime;
395 b->ctime = attr->la_ctime;
396 b->mode = attr->la_mode;
397 b->size = attr->la_size;
398 b->blocks = attr->la_blocks;
399 b->uid = attr->la_uid;
400 b->gid = attr->la_gid;
401 b->flags = attr->la_flags;
402 b->nlink = attr->la_nlink;
403 b->rdev = attr->la_rdev;
407 b->valid |= OBD_MD_FLID;
409 /* FIXME: these should be fixed when new igif ready.*/
410 b->ino = fid_oid(fid); /* 1.6 compatibility */
411 b->generation = fid_ver(fid); /* 1.6 compatibility */
412 b->valid |= OBD_MD_FLGENER; /* 1.6 compatibility */
414 CDEBUG(D_INODE, DFID": nlink=%d, mode=%o, size="LPU64"\n",
415 PFID(fid), b->nlink, b->mode, b->size);
419 mdt_body_reverse_idmap(info, b);
422 static inline int mdt_body_has_lov(const struct lu_attr *la,
423 const struct mdt_body *body)
425 return ((S_ISREG(la->la_mode) && (body->valid & OBD_MD_FLEASIZE)) ||
426 (S_ISDIR(la->la_mode) && (body->valid & OBD_MD_FLDIREA )) );
429 static int mdt_getattr_internal(struct mdt_thread_info *info,
430 struct mdt_object *o)
432 struct md_object *next = mdt_object_child(o);
433 const struct mdt_body *reqbody = info->mti_body;
434 struct ptlrpc_request *req = mdt_info_req(info);
435 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
436 struct md_attr *ma = &info->mti_attr;
437 struct lu_attr *la = &ma->ma_attr;
438 struct req_capsule *pill = info->mti_pill;
439 const struct lu_env *env = info->mti_env;
440 struct mdt_body *repbody;
441 struct lu_buf *buffer = &info->mti_buf;
445 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETATTR_PACK))
446 RETURN(err_serious(-ENOMEM));
448 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
452 rc = mdt_object_exists(o);
454 /* This object is located on remote node.*/
455 repbody->fid1 = *mdt_object_fid(o);
456 repbody->valid = OBD_MD_FLID | OBD_MD_MDS;
460 buffer->lb_buf = req_capsule_server_get(pill, &RMF_MDT_MD);
461 buffer->lb_len = req_capsule_get_size(pill, &RMF_MDT_MD, RCL_SERVER);
463 /* If it is dir object and client require MEA, then we got MEA */
464 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
465 reqbody->valid & OBD_MD_MEA) {
466 /* Assumption: MDT_MD size is enough for lmv size. */
467 ma->ma_lmv = buffer->lb_buf;
468 ma->ma_lmv_size = buffer->lb_len;
469 ma->ma_need = MA_LMV | MA_INODE;
471 ma->ma_lmm = buffer->lb_buf;
472 ma->ma_lmm_size = buffer->lb_len;
473 ma->ma_need = MA_LOV | MA_INODE;
476 if (S_ISDIR(lu_object_attr(&next->mo_lu)) &&
477 reqbody->valid & OBD_MD_FLDIREA &&
478 lustre_msg_get_opc(req->rq_reqmsg) == MDS_GETATTR) {
479 /* get default stripe info for this dir. */
480 ma->ma_need |= MA_LOV_DEF;
482 rc = mo_attr_get(env, next, ma);
484 CERROR("getattr error for "DFID": %d\n",
485 PFID(mdt_object_fid(o)), rc);
489 if (likely(ma->ma_valid & MA_INODE))
490 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
494 if (mdt_body_has_lov(la, reqbody)) {
495 if (ma->ma_valid & MA_LOV) {
496 LASSERT(ma->ma_lmm_size);
497 mdt_dump_lmm(D_INFO, ma->ma_lmm);
498 repbody->eadatasize = ma->ma_lmm_size;
499 if (S_ISDIR(la->la_mode))
500 repbody->valid |= OBD_MD_FLDIREA;
502 repbody->valid |= OBD_MD_FLEASIZE;
504 if (ma->ma_valid & MA_LMV) {
505 LASSERT(S_ISDIR(la->la_mode));
506 repbody->eadatasize = ma->ma_lmv_size;
507 repbody->valid |= (OBD_MD_FLDIREA|OBD_MD_MEA);
509 if (!(ma->ma_valid & MA_LOV) && !(ma->ma_valid & MA_LMV)) {
510 repbody->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
512 } else if (S_ISLNK(la->la_mode) &&
513 reqbody->valid & OBD_MD_LINKNAME) {
514 buffer->lb_buf = ma->ma_lmm;
515 buffer->lb_len = reqbody->eadatasize;
516 rc = mo_readlink(env, next, buffer);
517 if (unlikely(rc <= 0)) {
518 CERROR("readlink failed: %d\n", rc);
521 repbody->valid |= OBD_MD_LINKNAME;
522 repbody->eadatasize = rc;
524 ((char*)ma->ma_lmm)[rc - 1] = 0;
525 CDEBUG(D_INODE, "symlink dest %s, len = %d\n",
526 (char*)ma->ma_lmm, rc);
531 if (reqbody->valid & OBD_MD_FLMODEASIZE) {
532 repbody->max_cookiesize = info->mti_mdt->mdt_max_cookiesize;
533 repbody->max_mdsize = info->mti_mdt->mdt_max_mdsize;
534 repbody->valid |= OBD_MD_FLMODEASIZE;
535 CDEBUG(D_INODE, "I am going to change the MAX_MD_SIZE & "
536 "MAX_COOKIE to : %d:%d\n", repbody->max_mdsize,
537 repbody->max_cookiesize);
540 if (med->med_rmtclient && (reqbody->valid & OBD_MD_FLRMTPERM)) {
541 void *buf = req_capsule_server_get(pill, &RMF_ACL);
543 /* mdt_getattr_lock only */
544 rc = mdt_pack_remote_perm(info, o, buf);
546 repbody->valid &= ~OBD_MD_FLRMTPERM;
547 repbody->aclsize = 0;
550 repbody->valid |= OBD_MD_FLRMTPERM;
551 repbody->aclsize = sizeof(struct mdt_remote_perm);
554 #ifdef CONFIG_FS_POSIX_ACL
555 else if ((req->rq_export->exp_connect_flags & OBD_CONNECT_ACL) &&
556 (reqbody->valid & OBD_MD_FLACL)) {
557 buffer->lb_buf = req_capsule_server_get(pill, &RMF_ACL);
558 buffer->lb_len = req_capsule_get_size(pill,
559 &RMF_ACL, RCL_SERVER);
560 if (buffer->lb_len > 0) {
561 rc = mo_xattr_get(env, next, buffer,
562 XATTR_NAME_ACL_ACCESS);
564 if (rc == -ENODATA) {
565 repbody->aclsize = 0;
566 repbody->valid |= OBD_MD_FLACL;
568 } else if (rc == -EOPNOTSUPP) {
571 CERROR("got acl size: %d\n", rc);
574 repbody->aclsize = rc;
575 repbody->valid |= OBD_MD_FLACL;
582 if ((reqbody->valid & OBD_MD_FLMDSCAPA) &&
583 info->mti_mdt->mdt_opts.mo_mds_capa) {
584 struct lustre_capa *capa;
586 capa = req_capsule_server_get(pill, &RMF_CAPA1);
588 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
589 rc = mo_capa_get(env, next, capa, 0);
592 repbody->valid |= OBD_MD_FLMDSCAPA;
597 static int mdt_renew_capa(struct mdt_thread_info *info)
599 struct mdt_device *mdt = info->mti_mdt;
600 struct mdt_object *obj = info->mti_object;
601 struct mdt_body *body;
602 struct lustre_capa *capa, *c;
606 /* if object doesn't exist, or server has disabled capability,
607 * return directly, client will find body->valid OBD_MD_FLOSSCAPA
610 if (!obj || !mdt->mdt_opts.mo_mds_capa)
613 body = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
614 LASSERT(body != NULL);
616 c = req_capsule_client_get(info->mti_pill, &RMF_CAPA1);
619 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
623 rc = mo_capa_get(info->mti_env, mdt_object_child(obj), capa, 1);
625 body->valid |= OBD_MD_FLOSSCAPA;
629 static int mdt_getattr(struct mdt_thread_info *info)
631 struct mdt_object *obj = info->mti_object;
632 struct req_capsule *pill = info->mti_pill;
633 struct mdt_body *reqbody;
634 struct mdt_body *repbody;
640 reqbody = req_capsule_client_get(pill, &RMF_MDT_BODY);
643 if (reqbody->valid & OBD_MD_FLOSSCAPA) {
644 rc = req_capsule_server_pack(pill);
646 RETURN(err_serious(rc));
647 rc = mdt_renew_capa(info);
648 GOTO(out_shrink, rc);
651 LASSERT(obj != NULL);
652 LASSERT(lu_object_assert_exists(&obj->mot_obj.mo_lu));
654 mode = lu_object_attr(&obj->mot_obj.mo_lu);
655 if (S_ISLNK(mode) && (reqbody->valid & OBD_MD_LINKNAME) &&
656 (reqbody->eadatasize > info->mti_mdt->mdt_max_mdsize))
657 md_size = reqbody->eadatasize;
659 md_size = info->mti_mdt->mdt_max_mdsize;
661 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER, md_size);
663 rc = req_capsule_server_pack(pill);
664 if (unlikely(rc != 0))
665 RETURN(err_serious(rc));
667 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
668 LASSERT(repbody != NULL);
669 repbody->eadatasize = 0;
670 repbody->aclsize = 0;
672 if (reqbody->valid & OBD_MD_FLRMTPERM)
673 rc = mdt_init_ucred(info, reqbody);
675 rc = mdt_check_ucred(info);
677 GOTO(out_shrink, rc);
679 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
680 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
683 * Don't check capability at all, because rename might getattr for
684 * remote obj, and at that time no capability is available.
686 mdt_set_capainfo(info, 1, &reqbody->fid1, BYPASS_CAPA);
687 rc = mdt_getattr_internal(info, obj);
688 if (reqbody->valid & OBD_MD_FLRMTPERM)
689 mdt_exit_ucred(info);
692 mdt_shrink_reply(info);
696 static int mdt_is_subdir(struct mdt_thread_info *info)
698 struct mdt_object *o = info->mti_object;
699 struct req_capsule *pill = info->mti_pill;
700 const struct mdt_body *body = info->mti_body;
701 struct mdt_body *repbody;
707 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
710 * We save last checked parent fid to @repbody->fid1 for remote
713 LASSERT(fid_is_sane(&body->fid2));
714 LASSERT(mdt_object_exists(o) > 0);
715 rc = mdo_is_subdir(info->mti_env, mdt_object_child(o),
716 &body->fid2, &repbody->fid1);
717 if (rc == 0 || rc == -EREMOTE)
718 repbody->valid |= OBD_MD_FLID;
723 static int mdt_raw_lookup(struct mdt_thread_info *info,
724 struct mdt_object *parent,
725 const struct lu_name *lname,
726 struct ldlm_reply *ldlm_rep)
728 struct md_object *next = mdt_object_child(info->mti_object);
729 const struct mdt_body *reqbody = info->mti_body;
730 struct lu_fid *child_fid = &info->mti_tmp_fid1;
731 struct mdt_body *repbody;
735 if (reqbody->valid != OBD_MD_FLID)
738 LASSERT(!info->mti_cross_ref);
740 /* Only got the fid of this obj by name */
741 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
744 /* XXX is raw_lookup possible as intent operation? */
747 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
750 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
752 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
755 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
756 repbody->fid1 = *child_fid;
757 repbody->valid = OBD_MD_FLID;
763 * UPDATE lock should be taken against parent, and be release before exit;
764 * child_bits lock should be taken against child, and be returned back:
765 * (1)normal request should release the child lock;
766 * (2)intent request will grant the lock to client.
768 static int mdt_getattr_name_lock(struct mdt_thread_info *info,
769 struct mdt_lock_handle *lhc,
771 struct ldlm_reply *ldlm_rep)
773 struct ptlrpc_request *req = mdt_info_req(info);
774 struct mdt_body *reqbody = NULL;
775 struct mdt_object *parent = info->mti_object;
776 struct mdt_object *child;
777 struct md_object *next = mdt_object_child(parent);
778 struct lu_fid *child_fid = &info->mti_tmp_fid1;
779 struct lu_name *lname = NULL;
780 const char *name = NULL;
782 struct mdt_lock_handle *lhp;
783 struct ldlm_lock *lock;
784 struct ldlm_res_id *res_id;
790 is_resent = lustre_handle_is_used(&lhc->mlh_reg_lh);
791 LASSERT(ergo(is_resent,
792 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT));
794 LASSERT(parent != NULL);
795 name = req_capsule_client_get(info->mti_pill, &RMF_NAME);
797 RETURN(err_serious(-EFAULT));
799 namelen = req_capsule_get_size(info->mti_pill, &RMF_NAME,
801 if (!info->mti_cross_ref) {
803 * XXX: Check for "namelen == 0" is for getattr by fid
804 * (OBD_CONNECT_ATTRFID), otherwise do not allow empty name,
805 * that is the name must contain at least one character and
806 * the terminating '\0'
809 reqbody = req_capsule_client_get(info->mti_pill,
811 LASSERT(fid_is_sane(&reqbody->fid2));
814 CDEBUG(D_INODE, "getattr with lock for "DFID"/"DFID", "
816 PFID(mdt_object_fid(parent)), PFID(&reqbody->fid2),
819 lname = mdt_name(info->mti_env, (char *)name, namelen);
820 CDEBUG(D_INODE, "getattr with lock for "DFID"/%s, "
821 "ldlm_rep = %p\n", PFID(mdt_object_fid(parent)),
825 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_EXECD);
827 rc = mdt_object_exists(parent);
828 if (unlikely(rc == 0)) {
829 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
830 &parent->mot_obj.mo_lu,
831 "Parent doesn't exist!\n");
833 } else if (!info->mti_cross_ref) {
834 LASSERTF(rc > 0, "Parent "DFID" is on remote server\n",
835 PFID(mdt_object_fid(parent)));
838 rc = mdt_raw_lookup(info, parent, lname, ldlm_rep);
846 if (info->mti_cross_ref) {
847 /* Only getattr on the child. Parent is on another node. */
848 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
850 CDEBUG(D_INODE, "partial getattr_name child_fid = "DFID", "
851 "ldlm_rep=%p\n", PFID(mdt_object_fid(child)), ldlm_rep);
854 /* Do not take lock for resent case. */
855 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
856 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
857 lhc->mlh_reg_lh.cookie);
858 LASSERT(fid_res_name_eq(mdt_object_fid(child),
859 &lock->l_resource->lr_name));
863 mdt_lock_handle_init(lhc);
864 mdt_lock_reg_init(lhc, LCK_PR);
867 * Object's name is on another MDS, no lookup lock is
868 * needed here but update is.
870 child_bits &= ~MDS_INODELOCK_LOOKUP;
871 child_bits |= MDS_INODELOCK_UPDATE;
873 rc = mdt_object_lock(info, child, lhc, child_bits,
877 /* Finally, we can get attr for child. */
878 mdt_set_capainfo(info, 0, mdt_object_fid(child),
880 rc = mdt_getattr_internal(info, child);
881 if (unlikely(rc != 0))
882 mdt_object_unlock(info, child, lhc, 1);
887 /* step 1: lock parent */
888 lhp = &info->mti_lh[MDT_LH_PARENT];
889 mdt_lock_pdo_init(lhp, LCK_PR, name, namelen);
890 rc = mdt_object_lock(info, parent, lhp, MDS_INODELOCK_UPDATE,
893 if (unlikely(rc != 0))
897 /* step 2: lookup child's fid by name */
898 rc = mdo_lookup(info->mti_env, next, lname, child_fid,
903 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
904 GOTO(out_parent, rc);
906 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
908 *child_fid = reqbody->fid2;
909 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
913 *step 3: find the child object by fid & lock it.
914 * regardless if it is local or remote.
916 child = mdt_object_find(info->mti_env, info->mti_mdt, child_fid);
918 if (unlikely(IS_ERR(child)))
919 GOTO(out_parent, rc = PTR_ERR(child));
921 /* Do not take lock for resent case. */
922 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
923 LASSERTF(lock != NULL, "Invalid lock handle "LPX64"\n",
924 lhc->mlh_reg_lh.cookie);
926 res_id = &lock->l_resource->lr_name;
927 if (!fid_res_name_eq(mdt_object_fid(child),
928 &lock->l_resource->lr_name)) {
929 LASSERTF(fid_res_name_eq(mdt_object_fid(parent),
930 &lock->l_resource->lr_name),
931 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
932 (unsigned long)res_id->name[0],
933 (unsigned long)res_id->name[1],
934 (unsigned long)res_id->name[2],
935 PFID(mdt_object_fid(parent)));
936 CWARN("Although resent, but still not get child lock"
937 "parent:"DFID" child:"DFID"\n",
938 PFID(mdt_object_fid(parent)),
939 PFID(mdt_object_fid(child)));
940 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
949 ma = &info->mti_attr;
951 mdt_lock_handle_init(lhc);
952 mdt_lock_reg_init(lhc, LCK_PR);
954 if (mdt_object_exists(child) == 0) {
955 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
956 &child->mot_obj.mo_lu,
957 "Object doesn't exist!\n");
958 GOTO(out_child, rc = -ESTALE);
962 ma->ma_need = MA_INODE;
963 rc = mo_attr_get(info->mti_env, next, ma);
964 if (unlikely(rc != 0))
967 /* If the file has not been changed for some time, we return
968 * not only a LOOKUP lock, but also an UPDATE lock and this
969 * might save us RPC on later STAT. For directories, it also
970 * let negative dentry starts working for this dir. */
971 if (ma->ma_valid & MA_INODE &&
972 ma->ma_attr.la_valid & LA_CTIME &&
973 info->mti_mdt->mdt_namespace->ns_ctime_age_limit +
974 ma->ma_attr.la_ctime < cfs_time_current_sec())
975 child_bits |= MDS_INODELOCK_UPDATE;
977 rc = mdt_object_lock(info, child, lhc, child_bits,
980 if (unlikely(rc != 0))
984 /* finally, we can get attr for child. */
985 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
986 rc = mdt_getattr_internal(info, child);
987 if (unlikely(rc != 0)) {
988 mdt_object_unlock(info, child, lhc, 1);
990 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
992 struct mdt_body *repbody;
994 /* Debugging code. */
995 res_id = &lock->l_resource->lr_name;
996 LDLM_DEBUG(lock, "Returning lock to client\n");
997 LASSERTF(fid_res_name_eq(mdt_object_fid(child),
998 &lock->l_resource->lr_name),
999 "Lock res_id: %lu/%lu/%lu, Fid: "DFID".\n",
1000 (unsigned long)res_id->name[0],
1001 (unsigned long)res_id->name[1],
1002 (unsigned long)res_id->name[2],
1003 PFID(mdt_object_fid(child)));
1005 * Pack Size-on-MDS inode attributes to the body if
1006 * update lock is given.
1008 repbody = req_capsule_server_get(info->mti_pill,
1010 if (lock->l_policy_data.l_inodebits.bits &
1011 MDS_INODELOCK_UPDATE)
1012 mdt_pack_size2body(info, child);
1013 LDLM_LOCK_PUT(lock);
1018 mdt_object_put(info->mti_env, child);
1020 mdt_object_unlock(info, parent, lhp, 1);
1024 /* normal handler: should release the child lock */
1025 static int mdt_getattr_name(struct mdt_thread_info *info)
1027 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_CHILD];
1028 struct mdt_body *reqbody;
1029 struct mdt_body *repbody;
1033 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1034 LASSERT(reqbody != NULL);
1035 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1036 LASSERT(repbody != NULL);
1038 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
1039 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
1040 repbody->eadatasize = 0;
1041 repbody->aclsize = 0;
1043 rc = mdt_init_ucred(info, reqbody);
1045 GOTO(out_shrink, rc);
1047 rc = mdt_getattr_name_lock(info, lhc, MDS_INODELOCK_UPDATE, NULL);
1048 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1049 ldlm_lock_decref(&lhc->mlh_reg_lh, lhc->mlh_reg_mode);
1050 lhc->mlh_reg_lh.cookie = 0;
1052 mdt_exit_ucred(info);
1055 mdt_shrink_reply(info);
1059 static const struct lu_device_operations mdt_lu_ops;
1061 static int lu_device_is_mdt(struct lu_device *d)
1063 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &mdt_lu_ops);
1066 static int mdt_set_info(struct mdt_thread_info *info)
1068 struct ptlrpc_request *req = mdt_info_req(info);
1074 rc = req_capsule_server_pack(info->mti_pill);
1078 key = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_KEY);
1080 DEBUG_REQ(D_HA, req, "no set_info key");
1084 keylen = req_capsule_get_size(info->mti_pill, &RMF_SETINFO_KEY,
1087 val = req_capsule_client_get(info->mti_pill, &RMF_SETINFO_VAL);
1089 DEBUG_REQ(D_HA, req, "no set_info val");
1093 if (!KEY_IS(KEY_READ_ONLY))
1097 lustre_msg_set_status(req->rq_repmsg, 0);
1099 spin_lock(&req->rq_export->exp_lock);
1101 req->rq_export->exp_connect_flags |= OBD_CONNECT_RDONLY;
1103 req->rq_export->exp_connect_flags &= ~OBD_CONNECT_RDONLY;
1104 spin_unlock(&req->rq_export->exp_lock);
1109 static int mdt_connect(struct mdt_thread_info *info)
1112 struct ptlrpc_request *req;
1114 req = mdt_info_req(info);
1115 rc = target_handle_connect(req);
1117 LASSERT(req->rq_export != NULL);
1118 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
1119 rc = mdt_init_idmap(info);
1121 struct obd_export *exp;
1123 exp = req->rq_export;
1124 /* if mdt_init_idmap failed, revocation for connect */
1125 obd_disconnect(class_export_get(exp));
1128 rc = err_serious(rc);
1132 static int mdt_disconnect(struct mdt_thread_info *info)
1137 rc = target_handle_disconnect(mdt_info_req(info));
1139 rc = err_serious(rc);
1143 static int mdt_sendpage(struct mdt_thread_info *info,
1144 struct lu_rdpg *rdpg)
1146 struct ptlrpc_request *req = mdt_info_req(info);
1147 struct ptlrpc_bulk_desc *desc;
1148 struct l_wait_info *lwi = &info->mti_u.rdpg.mti_wait_info;
1156 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, BULK_PUT_SOURCE,
1161 for (i = 0, tmpcount = rdpg->rp_count;
1162 i < rdpg->rp_npages; i++, tmpcount -= tmpsize) {
1163 tmpsize = min_t(int, tmpcount, CFS_PAGE_SIZE);
1164 ptlrpc_prep_bulk_page(desc, rdpg->rp_pages[i], 0, tmpsize);
1167 LASSERT(desc->bd_nob == rdpg->rp_count);
1168 rc = ptlrpc_start_bulk_transfer(desc);
1170 GOTO(free_desc, rc);
1172 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1173 GOTO(abort_bulk, rc = 0);
1175 timeout = (int) req->rq_deadline - cfs_time_current_sec();
1177 CERROR("Req deadline already passed %lu (now: %lu)\n",
1178 req->rq_deadline, cfs_time_current_sec());
1179 *lwi = LWI_TIMEOUT(max(timeout, 1) * HZ, NULL, NULL);
1180 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc), lwi);
1181 LASSERT (rc == 0 || rc == -ETIMEDOUT);
1184 if (desc->bd_success &&
1185 desc->bd_nob_transferred == rdpg->rp_count)
1186 GOTO(free_desc, rc);
1188 rc = -ETIMEDOUT; /* XXX should this be a different errno? */
1191 DEBUG_REQ(D_ERROR, req, "bulk failed: %s %d(%d), evicting %s@%s",
1192 (rc == -ETIMEDOUT) ? "timeout" : "network error",
1193 desc->bd_nob_transferred, rdpg->rp_count,
1194 req->rq_export->exp_client_uuid.uuid,
1195 req->rq_export->exp_connection->c_remote_uuid.uuid);
1197 class_fail_export(req->rq_export);
1201 ptlrpc_abort_bulk(desc);
1203 ptlrpc_free_bulk(desc);
1207 #ifdef HAVE_SPLIT_SUPPORT
1209 * Retrieve dir entry from the page and insert it to the slave object, actually,
1210 * this should be in osd layer, but since it will not in the final product, so
1211 * just do it here and do not define more moo api anymore for this.
1213 static int mdt_write_dir_page(struct mdt_thread_info *info, struct page *page,
1216 struct mdt_object *object = info->mti_object;
1217 struct lu_fid *lf = &info->mti_tmp_fid2;
1218 struct md_attr *ma = &info->mti_attr;
1219 struct lu_dirpage *dp;
1220 struct lu_dirent *ent;
1221 int rc = 0, offset = 0;
1224 /* Make sure we have at least one entry. */
1229 * Disable trans for this name insert, since it will include many trans
1232 info->mti_no_need_trans = 1;
1234 * When write_dir_page, no need update parent's ctime,
1235 * and no permission check for name_insert.
1237 ma->ma_attr.la_ctime = 0;
1238 ma->ma_attr.la_valid = LA_MODE;
1239 ma->ma_valid = MA_INODE;
1242 dp = page_address(page);
1243 offset = (int)((__u32)lu_dirent_start(dp) - (__u32)dp);
1245 for (ent = lu_dirent_start(dp); ent != NULL;
1246 ent = lu_dirent_next(ent)) {
1247 struct lu_name *lname;
1250 if (le16_to_cpu(ent->lde_namelen) == 0)
1253 fid_le_to_cpu(lf, &ent->lde_fid);
1254 if (le64_to_cpu(ent->lde_hash) & MAX_HASH_HIGHEST_BIT)
1255 ma->ma_attr.la_mode = S_IFDIR;
1257 ma->ma_attr.la_mode = 0;
1258 OBD_ALLOC(name, le16_to_cpu(ent->lde_namelen) + 1);
1260 GOTO(out, rc = -ENOMEM);
1262 memcpy(name, ent->lde_name, le16_to_cpu(ent->lde_namelen));
1263 lname = mdt_name(info->mti_env, name,
1264 le16_to_cpu(ent->lde_namelen));
1265 ma->ma_attr_flags |= MDS_PERM_BYPASS;
1266 rc = mdo_name_insert(info->mti_env,
1267 md_object_next(&object->mot_obj),
1269 OBD_FREE(name, le16_to_cpu(ent->lde_namelen) + 1);
1271 CERROR("Can't insert %*.*s, rc %d\n",
1272 le16_to_cpu(ent->lde_namelen),
1273 le16_to_cpu(ent->lde_namelen),
1278 offset += lu_dirent_size(ent);
1288 static int mdt_bulk_timeout(void *data)
1292 CERROR("mdt bulk transfer timeout \n");
1297 static int mdt_writepage(struct mdt_thread_info *info)
1299 struct ptlrpc_request *req = mdt_info_req(info);
1300 struct mdt_body *reqbody;
1301 struct l_wait_info *lwi;
1302 struct ptlrpc_bulk_desc *desc;
1308 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1309 if (reqbody == NULL)
1310 RETURN(err_serious(-EFAULT));
1312 desc = ptlrpc_prep_bulk_exp(req, 1, BULK_GET_SINK, MDS_BULK_PORTAL);
1314 RETURN(err_serious(-ENOMEM));
1316 /* allocate the page for the desc */
1317 page = cfs_alloc_page(CFS_ALLOC_STD);
1319 GOTO(desc_cleanup, rc = -ENOMEM);
1321 CDEBUG(D_INFO, "Received page offset %d size %d \n",
1322 (int)reqbody->size, (int)reqbody->nlink);
1324 ptlrpc_prep_bulk_page(desc, page, (int)reqbody->size,
1325 (int)reqbody->nlink);
1328 * Check if client was evicted while we were doing i/o before touching
1333 GOTO(cleanup_page, rc = -ENOMEM);
1335 if (desc->bd_export->exp_failed)
1338 rc = ptlrpc_start_bulk_transfer (desc);
1340 *lwi = LWI_TIMEOUT_INTERVAL(obd_timeout * HZ / 4, HZ,
1341 mdt_bulk_timeout, desc);
1342 rc = l_wait_event(desc->bd_waitq, !ptlrpc_bulk_active(desc) ||
1343 desc->bd_export->exp_failed, lwi);
1344 LASSERT(rc == 0 || rc == -ETIMEDOUT);
1345 if (rc == -ETIMEDOUT) {
1346 DEBUG_REQ(D_ERROR, req, "timeout on bulk GET");
1347 ptlrpc_abort_bulk(desc);
1348 } else if (desc->bd_export->exp_failed) {
1349 DEBUG_REQ(D_ERROR, req, "Eviction on bulk GET");
1351 ptlrpc_abort_bulk(desc);
1352 } else if (!desc->bd_success ||
1353 desc->bd_nob_transferred != desc->bd_nob) {
1354 DEBUG_REQ(D_ERROR, req, "%s bulk GET %d(%d)",
1356 "truncated" : "network error on",
1357 desc->bd_nob_transferred, desc->bd_nob);
1358 /* XXX should this be a different errno? */
1362 DEBUG_REQ(D_ERROR, req, "ptlrpc_bulk_get failed: rc %d", rc);
1365 GOTO(cleanup_lwi, rc);
1366 rc = mdt_write_dir_page(info, page, reqbody->nlink);
1371 cfs_free_page(page);
1373 ptlrpc_free_bulk(desc);
1378 static int mdt_readpage(struct mdt_thread_info *info)
1380 struct mdt_object *object = info->mti_object;
1381 struct lu_rdpg *rdpg = &info->mti_u.rdpg.mti_rdpg;
1382 struct mdt_body *reqbody;
1383 struct mdt_body *repbody;
1388 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_READPAGE_PACK))
1389 RETURN(err_serious(-ENOMEM));
1391 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
1392 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1393 if (reqbody == NULL || repbody == NULL)
1394 RETURN(err_serious(-EFAULT));
1397 * prepare @rdpg before calling lower layers and transfer itself. Here
1398 * reqbody->size contains offset of where to start to read and
1399 * reqbody->nlink contains number bytes to read.
1401 rdpg->rp_hash = reqbody->size;
1402 if (rdpg->rp_hash != reqbody->size) {
1403 CERROR("Invalid hash: "LPX64" != "LPX64"\n",
1404 rdpg->rp_hash, reqbody->size);
1407 rdpg->rp_count = reqbody->nlink;
1408 rdpg->rp_npages = (rdpg->rp_count + CFS_PAGE_SIZE - 1)>>CFS_PAGE_SHIFT;
1409 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1410 if (rdpg->rp_pages == NULL)
1413 for (i = 0; i < rdpg->rp_npages; ++i) {
1414 rdpg->rp_pages[i] = cfs_alloc_page(CFS_ALLOC_STD);
1415 if (rdpg->rp_pages[i] == NULL)
1416 GOTO(free_rdpg, rc = -ENOMEM);
1419 /* call lower layers to fill allocated pages with directory data */
1420 rc = mo_readpage(info->mti_env, mdt_object_child(object), rdpg);
1422 GOTO(free_rdpg, rc);
1424 /* send pages to client */
1425 rc = mdt_sendpage(info, rdpg);
1430 for (i = 0; i < rdpg->rp_npages; i++)
1431 if (rdpg->rp_pages[i] != NULL)
1432 cfs_free_page(rdpg->rp_pages[i]);
1433 OBD_FREE(rdpg->rp_pages, rdpg->rp_npages * sizeof rdpg->rp_pages[0]);
1435 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SENDPAGE))
1441 static int mdt_reint_internal(struct mdt_thread_info *info,
1442 struct mdt_lock_handle *lhc,
1445 struct req_capsule *pill = info->mti_pill;
1446 struct mdt_device *mdt = info->mti_mdt;
1447 struct mdt_body *repbody;
1452 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
1453 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
1454 mdt->mdt_max_mdsize);
1455 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
1456 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
1457 mdt->mdt_max_cookiesize);
1459 rc = req_capsule_server_pack(pill);
1461 CERROR("Can't pack response, rc %d\n", rc);
1462 RETURN(err_serious(rc));
1465 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_SERVER)) {
1466 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1468 repbody->eadatasize = 0;
1469 repbody->aclsize = 0;
1472 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNPACK))
1473 GOTO(out_shrink, rc = err_serious(-EFAULT));
1475 rc = mdt_reint_unpack(info, op);
1477 CERROR("Can't unpack reint, rc %d\n", rc);
1478 GOTO(out_shrink, rc = err_serious(rc));
1481 rc = mdt_init_ucred_reint(info);
1483 GOTO(out_shrink, rc);
1485 rc = mdt_fix_attr_ucred(info, op);
1487 GOTO(out_ucred, rc = err_serious(rc));
1489 if (mdt_check_resent(info, mdt_reconstruct, lhc)) {
1490 rc = lustre_msg_get_status(mdt_info_req(info)->rq_repmsg);
1491 GOTO(out_ucred, rc);
1493 rc = mdt_reint_rec(info, lhc);
1496 mdt_exit_ucred(info);
1498 mdt_shrink_reply(info);
1502 static long mdt_reint_opcode(struct mdt_thread_info *info,
1503 const struct req_format **fmt)
1505 struct mdt_rec_reint *rec;
1508 opc = err_serious(-EFAULT);
1509 rec = req_capsule_client_get(info->mti_pill, &RMF_REC_REINT);
1511 opc = rec->rr_opcode;
1512 DEBUG_REQ(D_INODE, mdt_info_req(info), "reint opt = %ld", opc);
1513 if (opc < REINT_MAX && fmt[opc] != NULL)
1514 req_capsule_extend(info->mti_pill, fmt[opc]);
1516 CERROR("Unsupported opc: %ld\n", opc);
1517 opc = err_serious(opc);
1523 static int mdt_reint(struct mdt_thread_info *info)
1528 static const struct req_format *reint_fmts[REINT_MAX] = {
1529 [REINT_SETATTR] = &RQF_MDS_REINT_SETATTR,
1530 [REINT_CREATE] = &RQF_MDS_REINT_CREATE,
1531 [REINT_LINK] = &RQF_MDS_REINT_LINK,
1532 [REINT_UNLINK] = &RQF_MDS_REINT_UNLINK,
1533 [REINT_RENAME] = &RQF_MDS_REINT_RENAME,
1534 [REINT_OPEN] = &RQF_MDS_REINT_OPEN,
1535 [REINT_SETXATTR] = &RQF_MDS_REINT_SETXATTR
1540 opc = mdt_reint_opcode(info, reint_fmts);
1543 * No lock possible here from client to pass it to reint code
1546 rc = mdt_reint_internal(info, NULL, opc);
1551 info->mti_fail_id = OBD_FAIL_MDS_REINT_NET_REP;
1555 /* this should sync the whole device */
1556 static int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt)
1558 struct dt_device *dt = mdt->mdt_bottom;
1562 rc = dt->dd_ops->dt_sync(env, dt);
1566 /* this should sync this object */
1567 static int mdt_object_sync(struct mdt_thread_info *info)
1569 struct md_object *next;
1573 if (!mdt_object_exists(info->mti_object)) {
1574 CWARN("Non existing object "DFID"!\n",
1575 PFID(mdt_object_fid(info->mti_object)));
1578 next = mdt_object_child(info->mti_object);
1579 rc = mo_object_sync(info->mti_env, next);
1584 static int mdt_sync(struct mdt_thread_info *info)
1586 struct req_capsule *pill = info->mti_pill;
1587 struct mdt_body *body;
1591 /* The fid may be zero, so we req_capsule_set manually */
1592 req_capsule_set(pill, &RQF_MDS_SYNC);
1594 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
1596 RETURN(err_serious(-EINVAL));
1598 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_SYNC_PACK))
1599 RETURN(err_serious(-ENOMEM));
1601 if (fid_seq(&body->fid1) == 0) {
1602 /* sync the whole device */
1603 rc = req_capsule_server_pack(pill);
1605 rc = mdt_device_sync(info->mti_env, info->mti_mdt);
1607 rc = err_serious(rc);
1609 /* sync an object */
1610 rc = mdt_unpack_req_pack_rep(info, HABEO_CORPUS|HABEO_REFERO);
1612 rc = mdt_object_sync(info);
1614 struct md_object *next;
1615 const struct lu_fid *fid;
1616 struct lu_attr *la = &info->mti_attr.ma_attr;
1618 next = mdt_object_child(info->mti_object);
1619 info->mti_attr.ma_need = MA_INODE;
1620 info->mti_attr.ma_valid = 0;
1621 rc = mo_attr_get(info->mti_env, next,
1624 body = req_capsule_server_get(pill,
1626 fid = mdt_object_fid(info->mti_object);
1627 mdt_pack_attr2body(info, body, la, fid);
1631 rc = err_serious(rc);
1636 static int mdt_quotacheck_handle(struct mdt_thread_info *info)
1638 return err_serious(-EOPNOTSUPP);
1641 static int mdt_quotactl_handle(struct mdt_thread_info *info)
1643 return err_serious(-EOPNOTSUPP);
1647 * OBD PING and other handlers.
1649 static int mdt_obd_ping(struct mdt_thread_info *info)
1654 req_capsule_set(info->mti_pill, &RQF_OBD_PING);
1656 rc = target_handle_ping(mdt_info_req(info));
1658 rc = err_serious(rc);
1662 static int mdt_obd_log_cancel(struct mdt_thread_info *info)
1664 return err_serious(-EOPNOTSUPP);
1667 static int mdt_obd_qc_callback(struct mdt_thread_info *info)
1669 return err_serious(-EOPNOTSUPP);
1676 static struct ldlm_callback_suite cbs = {
1677 .lcs_completion = ldlm_server_completion_ast,
1678 .lcs_blocking = ldlm_server_blocking_ast,
1682 static int mdt_enqueue(struct mdt_thread_info *info)
1684 struct ptlrpc_request *req;
1689 * info->mti_dlm_req already contains swapped and (if necessary)
1690 * converted dlm request.
1692 LASSERT(info->mti_dlm_req != NULL);
1694 req = mdt_info_req(info);
1697 * Lock without inodebits makes no sense and will oops later in
1698 * ldlm. Let's check it now to see if we have wrong lock from client or
1699 * bits get corrupted somewhere in mdt_intent_policy().
1701 req_bits = info->mti_dlm_req->lock_desc.l_policy_data.l_inodebits.bits;
1702 /* This is disabled because we need to support liblustre flock.
1703 * LASSERT(req_bits != 0);
1706 rc = ldlm_handle_enqueue0(info->mti_mdt->mdt_namespace,
1707 req, info->mti_dlm_req, &cbs);
1708 info->mti_fail_id = OBD_FAIL_LDLM_REPLY;
1709 return rc ? err_serious(rc) : req->rq_status;
1712 static int mdt_convert(struct mdt_thread_info *info)
1715 struct ptlrpc_request *req;
1717 LASSERT(info->mti_dlm_req);
1718 req = mdt_info_req(info);
1719 rc = ldlm_handle_convert0(req, info->mti_dlm_req);
1720 return rc ? err_serious(rc) : req->rq_status;
1723 static int mdt_bl_callback(struct mdt_thread_info *info)
1725 CERROR("bl callbacks should not happen on MDS\n");
1727 return err_serious(-EOPNOTSUPP);
1730 static int mdt_cp_callback(struct mdt_thread_info *info)
1732 CERROR("cp callbacks should not happen on MDS\n");
1734 return err_serious(-EOPNOTSUPP);
1738 * sec context handlers
1740 static int mdt_sec_ctx_handle(struct mdt_thread_info *info)
1744 rc = mdt_handle_idmap(info);
1747 struct ptlrpc_request *req = mdt_info_req(info);
1750 opc = lustre_msg_get_opc(req->rq_reqmsg);
1751 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT)
1752 sptlrpc_svc_ctx_invalidate(req);
1755 OBD_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, obd_fail_val);
1760 static struct mdt_object *mdt_obj(struct lu_object *o)
1762 LASSERT(lu_device_is_mdt(o->lo_dev));
1763 return container_of0(o, struct mdt_object, mot_obj.mo_lu);
1766 struct mdt_object *mdt_object_find(const struct lu_env *env,
1767 struct mdt_device *d,
1768 const struct lu_fid *f)
1770 struct lu_object *o;
1771 struct mdt_object *m;
1774 CDEBUG(D_INFO, "Find object for "DFID"\n", PFID(f));
1775 o = lu_object_find(env, &d->mdt_md_dev.md_lu_dev, f, NULL);
1776 if (unlikely(IS_ERR(o)))
1777 m = (struct mdt_object *)o;
1784 * Asyncronous commit for mdt device.
1786 * Pass asynchonous commit call down the MDS stack.
1788 * \param env environment
1789 * \param mdt the mdt device
1791 static void mdt_device_commit_async(const struct lu_env *env,
1792 struct mdt_device *mdt)
1794 struct dt_device *dt = mdt->mdt_bottom;
1797 rc = dt->dd_ops->dt_commit_async(env, dt);
1798 if (unlikely(rc != 0))
1799 CWARN("async commit start failed with rc = %d", rc);
1803 * Mark the lock as "synchonous".
1805 * Mark the lock to deffer transaction commit to the unlock time.
1807 * \param lock the lock to mark as "synchonous"
1809 * \see mdt_is_lock_sync
1810 * \see mdt_save_lock
1812 static inline void mdt_set_lock_sync(struct ldlm_lock *lock)
1814 lock->l_ast_data = (void*)1;
1818 * Check whehter the lock "synchonous" or not.
1820 * \param lock the lock to check
1821 * \retval 1 the lock is "synchonous"
1822 * \retval 0 the lock isn't "synchronous"
1824 * \see mdt_set_lock_sync
1825 * \see mdt_save_lock
1827 static inline int mdt_is_lock_sync(struct ldlm_lock *lock)
1829 return lock->l_ast_data != NULL;
1833 * Blocking AST for mdt locks.
1835 * Starts transaction commit if in case of COS lock conflict or
1836 * deffers such a commit to the mdt_save_lock.
1838 * \param lock the lock which blocks a request or cancelling lock
1839 * \param desc unused
1840 * \param data unused
1841 * \param flag indicates whether this cancelling or blocking callback
1843 * \see ldlm_blocking_ast_nocheck
1845 int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
1846 void *data, int flag)
1848 struct obd_device *obd = lock->l_resource->lr_namespace->ns_obd;
1849 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1853 if (flag == LDLM_CB_CANCELING)
1855 lock_res_and_lock(lock);
1856 if (lock->l_blocking_ast != mdt_blocking_ast) {
1857 unlock_res_and_lock(lock);
1860 if (mdt_cos_is_enabled(mdt) &&
1861 lock->l_req_mode & (LCK_PW | LCK_EX) &&
1862 lock->l_blocking_lock != NULL &&
1863 lock->l_client_cookie != lock->l_blocking_lock->l_client_cookie) {
1864 mdt_set_lock_sync(lock);
1866 rc = ldlm_blocking_ast_nocheck(lock);
1868 /* There is no lock conflict if l_blocking_lock == NULL,
1869 * it indicates a blocking ast sent from ldlm_lock_decref_internal
1870 * when the last reference to a local lock was released */
1871 if (lock->l_req_mode == LCK_COS && lock->l_blocking_lock != NULL) {
1874 rc = lu_env_init(&env, LCT_MD_THREAD);
1875 if (unlikely(rc != 0))
1876 CWARN("lu_env initialization failed with rc = %d,"
1877 "cannot start asynchronous commit\n", rc);
1879 mdt_device_commit_async(&env, mdt);
1885 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
1886 struct mdt_lock_handle *lh, __u64 ibits, int locality)
1888 struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
1889 ldlm_policy_data_t *policy = &info->mti_policy;
1890 struct ldlm_res_id *res_id = &info->mti_res_id;
1894 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
1895 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
1896 LASSERT(lh->mlh_reg_mode != LCK_MINMODE);
1897 LASSERT(lh->mlh_type != MDT_NUL_LOCK);
1899 if (mdt_object_exists(o) < 0) {
1900 if (locality == MDT_CROSS_LOCK) {
1901 /* cross-ref object fix */
1902 ibits &= ~MDS_INODELOCK_UPDATE;
1903 ibits |= MDS_INODELOCK_LOOKUP;
1905 LASSERT(!(ibits & MDS_INODELOCK_UPDATE));
1906 LASSERT(ibits & MDS_INODELOCK_LOOKUP);
1908 /* No PDO lock on remote object */
1909 LASSERT(lh->mlh_type != MDT_PDO_LOCK);
1912 if (lh->mlh_type == MDT_PDO_LOCK) {
1913 /* check for exists after object is locked */
1914 if (mdt_object_exists(o) == 0) {
1915 /* Non-existent object shouldn't have PDO lock */
1918 /* Non-dir object shouldn't have PDO lock */
1919 LASSERT(S_ISDIR(lu_object_attr(&o->mot_obj.mo_lu)));
1923 memset(policy, 0, sizeof(*policy));
1924 fid_build_reg_res_name(mdt_object_fid(o), res_id);
1927 * Take PDO lock on whole directory and build correct @res_id for lock
1928 * on part of directory.
1930 if (lh->mlh_pdo_hash != 0) {
1931 LASSERT(lh->mlh_type == MDT_PDO_LOCK);
1932 mdt_lock_pdo_mode(info, o, lh);
1933 if (lh->mlh_pdo_mode != LCK_NL) {
1935 * Do not use LDLM_FL_LOCAL_ONLY for parallel lock, it
1936 * is never going to be sent to client and we do not
1937 * want it slowed down due to possible cancels.
1939 policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
1940 rc = mdt_fid_lock(ns, &lh->mlh_pdo_lh, lh->mlh_pdo_mode,
1941 policy, res_id, LDLM_FL_ATOMIC_CB,
1942 &info->mti_exp->exp_handle.h_cookie);
1948 * Finish res_id initializing by name hash marking part of
1949 * directory which is taking modification.
1951 res_id->name[LUSTRE_RES_ID_HSH_OFF] = lh->mlh_pdo_hash;
1954 policy->l_inodebits.bits = ibits;
1957 * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
1958 * going to be sent to client. If it is - mdt_intent_policy() path will
1959 * fix it up and turn FL_LOCAL flag off.
1961 rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
1962 res_id, LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB,
1963 &info->mti_exp->exp_handle.h_cookie);
1969 mdt_object_unlock(info, o, lh, 1);
1976 * Save a lock within request object.
1978 * Keep the lock referenced until whether client ACK or transaction
1979 * commit happens or release the lock immediately depending on input
1980 * parameters. If COS is ON, a write lock is converted to COS lock
1983 * \param info thead info object
1984 * \param h lock handle
1985 * \param mode lock mode
1986 * \param decref force immediate lock releasing
1989 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
1990 ldlm_mode_t mode, int decref)
1994 if (lustre_handle_is_used(h)) {
1995 if (decref || !info->mti_has_trans ||
1996 !(mode & (LCK_PW | LCK_EX))){
1997 mdt_fid_unlock(h, mode);
1999 struct mdt_device *mdt = info->mti_mdt;
2000 struct ldlm_lock *lock = ldlm_handle2lock(h);
2001 struct ptlrpc_request *req = mdt_info_req(info);
2004 LASSERTF(lock != NULL, "no lock for cookie "LPX64"\n",
2006 CDEBUG(D_HA, "request = %p reply state = %p"
2007 " transno = "LPD64"\n",
2008 req, req->rq_reply_state, req->rq_transno);
2009 if (mdt_cos_is_enabled(mdt)) {
2011 ldlm_lock_downgrade(lock, LCK_COS);
2014 ptlrpc_save_lock(req, h, mode, no_ack);
2015 if (mdt_is_lock_sync(lock)) {
2016 CDEBUG(D_HA, "found sync-lock,"
2017 " async commit started\n");
2018 mdt_device_commit_async(info->mti_env,
2021 LDLM_LOCK_PUT(lock);
2030 * Unlock mdt object.
2032 * Immeditely release the regular lock and the PDO lock or save the
2033 * lock in reqeuest and keep them referenced until client ACK or
2034 * transaction commit.
2036 * \param info thread info object
2037 * \param o mdt object
2038 * \param h mdt lock handle referencing regular and PDO locks
2039 * \param decref force immediate lock releasing
2041 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *o,
2042 struct mdt_lock_handle *lh, int decref)
2046 mdt_save_lock(info, &lh->mlh_pdo_lh, lh->mlh_pdo_mode, decref);
2047 mdt_save_lock(info, &lh->mlh_reg_lh, lh->mlh_reg_mode, decref);
2052 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
2053 const struct lu_fid *f,
2054 struct mdt_lock_handle *lh,
2057 struct mdt_object *o;
2059 o = mdt_object_find(info->mti_env, info->mti_mdt, f);
2063 rc = mdt_object_lock(info, o, lh, ibits,
2066 mdt_object_put(info->mti_env, o);
2073 void mdt_object_unlock_put(struct mdt_thread_info * info,
2074 struct mdt_object * o,
2075 struct mdt_lock_handle *lh,
2078 mdt_object_unlock(info, o, lh, decref);
2079 mdt_object_put(info->mti_env, o);
2082 static struct mdt_handler *mdt_handler_find(__u32 opc,
2083 struct mdt_opc_slice *supported)
2085 struct mdt_opc_slice *s;
2086 struct mdt_handler *h;
2089 for (s = supported; s->mos_hs != NULL; s++) {
2090 if (s->mos_opc_start <= opc && opc < s->mos_opc_end) {
2091 h = s->mos_hs + (opc - s->mos_opc_start);
2092 if (likely(h->mh_opc != 0))
2093 LASSERT(h->mh_opc == opc);
2095 h = NULL; /* unsupported opc */
2102 static int mdt_lock_resname_compat(struct mdt_device *m,
2103 struct ldlm_request *req)
2105 /* XXX something... later. */
2109 static int mdt_lock_reply_compat(struct mdt_device *m, struct ldlm_reply *rep)
2111 /* XXX something... later. */
2116 * Generic code handling requests that have struct mdt_body passed in:
2118 * - extract mdt_body from request and save it in @info, if present;
2120 * - create lu_object, corresponding to the fid in mdt_body, and save it in
2123 * - if HABEO_CORPUS flag is set for this request type check whether object
2124 * actually exists on storage (lu_object_exists()).
2127 static int mdt_body_unpack(struct mdt_thread_info *info, __u32 flags)
2129 const struct mdt_body *body;
2130 struct mdt_object *obj;
2131 const struct lu_env *env;
2132 struct req_capsule *pill;
2136 env = info->mti_env;
2137 pill = info->mti_pill;
2139 body = info->mti_body = req_capsule_client_get(pill, &RMF_MDT_BODY);
2143 if (!(body->valid & OBD_MD_FLID))
2146 if (!fid_is_sane(&body->fid1)) {
2147 CERROR("Invalid fid: "DFID"\n", PFID(&body->fid1));
2152 * Do not get size or any capa fields before we check that request
2153 * contains capa actually. There are some requests which do not, for
2154 * instance MDS_IS_SUBDIR.
2156 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_CLIENT) &&
2157 req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
2158 mdt_set_capainfo(info, 0, &body->fid1,
2159 req_capsule_client_get(pill, &RMF_CAPA1));
2161 obj = mdt_object_find(env, info->mti_mdt, &body->fid1);
2163 if ((flags & HABEO_CORPUS) &&
2164 !mdt_object_exists(obj)) {
2165 mdt_object_put(env, obj);
2166 /* for capability renew ENOENT will be handled in
2168 if (body->valid & OBD_MD_FLOSSCAPA)
2173 info->mti_object = obj;
2182 static int mdt_unpack_req_pack_rep(struct mdt_thread_info *info, __u32 flags)
2184 struct req_capsule *pill = info->mti_pill;
2188 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT))
2189 rc = mdt_body_unpack(info, flags);
2193 if (rc == 0 && (flags & HABEO_REFERO)) {
2194 struct mdt_device *mdt = info->mti_mdt;
2197 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
2198 req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
2199 mdt->mdt_max_mdsize);
2200 if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
2201 req_capsule_set_size(pill, &RMF_LOGCOOKIES, RCL_SERVER,
2202 mdt->mdt_max_cookiesize);
2204 rc = req_capsule_server_pack(pill);
2209 static int mdt_init_capa_ctxt(const struct lu_env *env, struct mdt_device *m)
2211 struct md_device *next = m->mdt_child;
2213 return next->md_ops->mdo_init_capa_ctxt(env, next,
2214 m->mdt_opts.mo_mds_capa,
2215 m->mdt_capa_timeout,
2221 * Invoke handler for this request opc. Also do necessary preprocessing
2222 * (according to handler ->mh_flags), and post-processing (setting of
2223 * ->last_{xid,committed}).
2225 static int mdt_req_handle(struct mdt_thread_info *info,
2226 struct mdt_handler *h, struct ptlrpc_request *req)
2228 int rc, serious = 0;
2233 LASSERT(h->mh_act != NULL);
2234 LASSERT(h->mh_opc == lustre_msg_get_opc(req->rq_reqmsg));
2235 LASSERT(current->journal_info == NULL);
2238 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
2239 * to put same checks into handlers like mdt_close(), mdt_reint(),
2240 * etc., without talking to mdt authors first. Checking same thing
2241 * there again is useless and returning 0 error wihtout packing reply
2242 * is buggy! Handlers either pack reply or return error.
2244 * We return 0 here and do not send any reply in order to emulate
2245 * network failure. Do not send any reply in case any of NET related
2246 * fail_id has occured.
2248 if (OBD_FAIL_CHECK_ORSET(h->mh_fail_id, OBD_FAIL_ONCE))
2252 flags = h->mh_flags;
2253 LASSERT(ergo(flags & (HABEO_CORPUS|HABEO_REFERO), h->mh_fmt != NULL));
2255 if (h->mh_fmt != NULL) {
2256 req_capsule_set(info->mti_pill, h->mh_fmt);
2257 rc = mdt_unpack_req_pack_rep(info, flags);
2260 if (rc == 0 && flags & MUTABOR &&
2261 req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
2262 /* should it be rq_status? */
2265 if (rc == 0 && flags & HABEO_CLAVIS) {
2266 struct ldlm_request *dlm_req;
2268 LASSERT(h->mh_fmt != NULL);
2270 dlm_req = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2271 if (dlm_req != NULL) {
2272 if (info->mti_mdt->mdt_opts.mo_compat_resname)
2273 rc = mdt_lock_resname_compat(info->mti_mdt,
2275 info->mti_dlm_req = dlm_req;
2281 /* capability setting changed via /proc, needs reinitialize ctxt */
2282 if (info->mti_mdt && info->mti_mdt->mdt_capa_conf) {
2283 mdt_init_capa_ctxt(info->mti_env, info->mti_mdt);
2284 info->mti_mdt->mdt_capa_conf = 0;
2287 if (likely(rc == 0)) {
2289 * Process request, there can be two types of rc:
2290 * 1) errors with msg unpack/pack, other failures outside the
2291 * operation itself. This is counted as serious errors;
2292 * 2) errors during fs operation, should be placed in rq_status
2295 rc = h->mh_act(info);
2297 !req->rq_no_reply && req->rq_reply_state == NULL) {
2298 DEBUG_REQ(D_ERROR, req, "MDT \"handler\" %s did not "
2299 "pack reply and returned 0 error\n",
2303 serious = is_serious(rc);
2304 rc = clear_serious(rc);
2308 req->rq_status = rc;
2311 * ELDLM_* codes which > 0 should be in rq_status only as well as
2312 * all non-serious errors.
2314 if (rc > 0 || !serious)
2317 LASSERT(current->journal_info == NULL);
2319 if (rc == 0 && (flags & HABEO_CLAVIS) &&
2320 info->mti_mdt->mdt_opts.mo_compat_resname) {
2321 struct ldlm_reply *dlmrep;
2323 dlmrep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
2325 rc = mdt_lock_reply_compat(info->mti_mdt, dlmrep);
2328 /* If we're DISCONNECTing, the mdt_export_data is already freed */
2329 if (likely(rc == 0 && h->mh_opc != MDS_DISCONNECT))
2330 target_committed_to_req(req);
2332 if (unlikely((lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) &&
2333 lustre_msg_get_transno(req->rq_reqmsg) == 0)) {
2334 DEBUG_REQ(D_ERROR, req, "transno is 0 during REPLAY");
2338 target_send_reply(req, rc, info->mti_fail_id);
2342 void mdt_lock_handle_init(struct mdt_lock_handle *lh)
2344 lh->mlh_type = MDT_NUL_LOCK;
2345 lh->mlh_reg_lh.cookie = 0ull;
2346 lh->mlh_reg_mode = LCK_MINMODE;
2347 lh->mlh_pdo_lh.cookie = 0ull;
2348 lh->mlh_pdo_mode = LCK_MINMODE;
2351 void mdt_lock_handle_fini(struct mdt_lock_handle *lh)
2353 LASSERT(!lustre_handle_is_used(&lh->mlh_reg_lh));
2354 LASSERT(!lustre_handle_is_used(&lh->mlh_pdo_lh));
2358 * Initialize fields of struct mdt_thread_info. Other fields are left in
2359 * uninitialized state, because it's too expensive to zero out whole
2360 * mdt_thread_info (> 1K) on each request arrival.
2362 static void mdt_thread_info_init(struct ptlrpc_request *req,
2363 struct mdt_thread_info *info)
2366 struct md_capainfo *ci;
2368 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
2369 info->mti_pill = &req->rq_pill;
2372 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2373 mdt_lock_handle_init(&info->mti_lh[i]);
2375 /* mdt device: it can be NULL while CONNECT */
2376 if (req->rq_export) {
2377 info->mti_mdt = mdt_dev(req->rq_export->exp_obd->obd_lu_dev);
2378 info->mti_exp = req->rq_export;
2380 info->mti_mdt = NULL;
2381 info->mti_env = req->rq_svc_thread->t_env;
2382 ci = md_capainfo(info->mti_env);
2383 memset(ci, 0, sizeof *ci);
2385 info->mti_fail_id = OBD_FAIL_MDS_ALL_REPLY_NET;
2386 info->mti_transno = lustre_msg_get_transno(req->rq_reqmsg);
2388 memset(&info->mti_attr, 0, sizeof(info->mti_attr));
2389 info->mti_body = NULL;
2390 info->mti_object = NULL;
2391 info->mti_dlm_req = NULL;
2392 info->mti_has_trans = 0;
2393 info->mti_no_need_trans = 0;
2394 info->mti_cross_ref = 0;
2395 info->mti_opdata = 0;
2397 /* To not check for split by default. */
2398 info->mti_spec.sp_ck_split = 0;
2401 static void mdt_thread_info_fini(struct mdt_thread_info *info)
2405 req_capsule_fini(info->mti_pill);
2406 if (info->mti_object != NULL) {
2407 mdt_object_put(info->mti_env, info->mti_object);
2408 info->mti_object = NULL;
2410 for (i = 0; i < ARRAY_SIZE(info->mti_lh); i++)
2411 mdt_lock_handle_fini(&info->mti_lh[i]);
2412 info->mti_env = NULL;
2415 static int mdt_filter_recovery_request(struct ptlrpc_request *req,
2416 struct obd_device *obd, int *process)
2418 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2419 case MDS_CONNECT: /* This will never get here, but for completeness. */
2420 case OST_CONNECT: /* This will never get here, but for completeness. */
2421 case MDS_DISCONNECT:
2422 case OST_DISCONNECT:
2427 case MDS_DONE_WRITING:
2428 case MDS_SYNC: /* used in unmounting */
2434 *process = target_queue_recovery_request(req, obd);
2438 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
2445 * Handle recovery. Return:
2446 * +1: continue request processing;
2447 * -ve: abort immediately with the given error code;
2448 * 0: send reply with error code in req->rq_status;
2450 static int mdt_recovery(struct mdt_thread_info *info)
2452 struct ptlrpc_request *req = mdt_info_req(info);
2454 struct obd_device *obd;
2458 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2461 case SEC_CTX_INIT_CONT:
2467 rc = mdt_handle_idmap(info);
2476 if (unlikely(req->rq_export == NULL)) {
2477 CERROR("operation %d on unconnected MDS from %s\n",
2478 lustre_msg_get_opc(req->rq_reqmsg),
2479 libcfs_id2str(req->rq_peer));
2480 /* FIXME: For CMD cleanup, when mds_B stop, the req from
2481 * mds_A will get -ENOTCONN(especially for ping req),
2482 * which will cause that mds_A deactive timeout, then when
2483 * mds_A cleanup, the cleanup process will be suspended since
2484 * deactive timeout is not zero.
2486 req->rq_status = -ENOTCONN;
2487 target_send_reply(req, -ENOTCONN, info->mti_fail_id);
2491 /* sanity check: if the xid matches, the request must be marked as a
2492 * resent or replayed */
2493 if (req_xid_is_last(req)) {
2494 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
2495 (MSG_RESENT | MSG_REPLAY))) {
2496 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches last_xid, "
2497 "expected REPLAY or RESENT flag (%x)", req->rq_xid,
2498 lustre_msg_get_flags(req->rq_reqmsg));
2500 req->rq_status = -ENOTCONN;
2505 /* else: note the opposite is not always true; a RESENT req after a
2506 * failover will usually not match the last_xid, since it was likely
2507 * never committed. A REPLAYed request will almost never match the
2508 * last xid, however it could for a committed, but still retained,
2511 obd = req->rq_export->exp_obd;
2513 /* Check for aborted recovery... */
2514 spin_lock_bh(&obd->obd_processing_task_lock);
2515 recovering = obd->obd_recovering;
2516 spin_unlock_bh(&obd->obd_processing_task_lock);
2517 if (unlikely(recovering)) {
2520 DEBUG_REQ(D_INFO, req, "Got new replay");
2521 rc = mdt_filter_recovery_request(req, obd, &should_process);
2522 if (rc != 0 || !should_process)
2524 else if (should_process < 0) {
2525 req->rq_status = should_process;
2526 rc = ptlrpc_error(req);
2533 static int mdt_msg_check_version(struct lustre_msg *msg)
2537 switch (lustre_msg_get_opc(msg)) {
2539 case MDS_DISCONNECT:
2542 case SEC_CTX_INIT_CONT:
2544 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
2546 CERROR("bad opc %u version %08x, expecting %08x\n",
2547 lustre_msg_get_opc(msg),
2548 lustre_msg_get_version(msg),
2549 LUSTRE_OBD_VERSION);
2553 case MDS_GETATTR_NAME:
2560 case MDS_DONE_WRITING:
2566 case MDS_QUOTACHECK:
2572 rc = lustre_msg_check_version(msg, LUSTRE_MDS_VERSION);
2574 CERROR("bad opc %u version %08x, expecting %08x\n",
2575 lustre_msg_get_opc(msg),
2576 lustre_msg_get_version(msg),
2577 LUSTRE_MDS_VERSION);
2581 case LDLM_BL_CALLBACK:
2582 case LDLM_CP_CALLBACK:
2583 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
2585 CERROR("bad opc %u version %08x, expecting %08x\n",
2586 lustre_msg_get_opc(msg),
2587 lustre_msg_get_version(msg),
2588 LUSTRE_DLM_VERSION);
2590 case OBD_LOG_CANCEL:
2591 case LLOG_ORIGIN_HANDLE_CREATE:
2592 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
2593 case LLOG_ORIGIN_HANDLE_READ_HEADER:
2594 case LLOG_ORIGIN_HANDLE_CLOSE:
2595 case LLOG_ORIGIN_HANDLE_DESTROY:
2596 case LLOG_ORIGIN_HANDLE_PREV_BLOCK:
2598 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
2600 CERROR("bad opc %u version %08x, expecting %08x\n",
2601 lustre_msg_get_opc(msg),
2602 lustre_msg_get_version(msg),
2603 LUSTRE_LOG_VERSION);
2606 CERROR("MDS unknown opcode %d\n", lustre_msg_get_opc(msg));
2612 static int mdt_handle0(struct ptlrpc_request *req,
2613 struct mdt_thread_info *info,
2614 struct mdt_opc_slice *supported)
2616 struct mdt_handler *h;
2617 struct lustre_msg *msg;
2622 if (OBD_FAIL_CHECK_ORSET(OBD_FAIL_MDS_ALL_REQUEST_NET, OBD_FAIL_ONCE))
2625 LASSERT(current->journal_info == NULL);
2627 msg = req->rq_reqmsg;
2628 rc = mdt_msg_check_version(msg);
2629 if (likely(rc == 0)) {
2630 rc = mdt_recovery(info);
2631 if (likely(rc == +1)) {
2632 h = mdt_handler_find(lustre_msg_get_opc(msg),
2634 if (likely(h != NULL)) {
2635 rc = mdt_req_handle(info, h, req);
2637 CERROR("The unsupported opc: 0x%x\n", lustre_msg_get_opc(msg) );
2638 req->rq_status = -ENOTSUPP;
2639 rc = ptlrpc_error(req);
2644 CERROR(LUSTRE_MDT_NAME" drops mal-formed request\n");
2649 * MDT handler function called by ptlrpc service thread when request comes.
2651 * XXX common "target" functionality should be factored into separate module
2652 * shared by mdt, ost and stand-alone services like fld.
2654 static int mdt_handle_common(struct ptlrpc_request *req,
2655 struct mdt_opc_slice *supported)
2658 struct mdt_thread_info *info;
2662 env = req->rq_svc_thread->t_env;
2663 LASSERT(env != NULL);
2664 LASSERT(env->le_ses != NULL);
2665 LASSERT(env->le_ctx.lc_thread == req->rq_svc_thread);
2666 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
2667 LASSERT(info != NULL);
2669 mdt_thread_info_init(req, info);
2671 rc = mdt_handle0(req, info, supported);
2673 mdt_thread_info_fini(info);
2678 * This is called from recovery code as handler of _all_ RPC types, FLD and SEQ
2681 int mdt_recovery_handle(struct ptlrpc_request *req)
2686 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
2688 rc = mdt_handle_common(req, mdt_fld_handlers);
2691 rc = mdt_handle_common(req, mdt_seq_handlers);
2694 rc = mdt_handle_common(req, mdt_regular_handlers);
2701 static int mdt_regular_handle(struct ptlrpc_request *req)
2703 return mdt_handle_common(req, mdt_regular_handlers);
2706 static int mdt_readpage_handle(struct ptlrpc_request *req)
2708 return mdt_handle_common(req, mdt_readpage_handlers);
2711 static int mdt_xmds_handle(struct ptlrpc_request *req)
2713 return mdt_handle_common(req, mdt_xmds_handlers);
2716 static int mdt_mdsc_handle(struct ptlrpc_request *req)
2718 return mdt_handle_common(req, mdt_seq_handlers);
2721 static int mdt_mdss_handle(struct ptlrpc_request *req)
2723 return mdt_handle_common(req, mdt_seq_handlers);
2726 static int mdt_dtss_handle(struct ptlrpc_request *req)
2728 return mdt_handle_common(req, mdt_seq_handlers);
2731 static int mdt_fld_handle(struct ptlrpc_request *req)
2733 return mdt_handle_common(req, mdt_fld_handlers);
2749 static int mdt_intent_getattr(enum mdt_it_code opcode,
2750 struct mdt_thread_info *info,
2751 struct ldlm_lock **,
2753 static int mdt_intent_reint(enum mdt_it_code opcode,
2754 struct mdt_thread_info *info,
2755 struct ldlm_lock **,
2758 static struct mdt_it_flavor {
2759 const struct req_format *it_fmt;
2761 int (*it_act)(enum mdt_it_code ,
2762 struct mdt_thread_info *,
2763 struct ldlm_lock **,
2766 } mdt_it_flavor[] = {
2768 .it_fmt = &RQF_LDLM_INTENT,
2769 /*.it_flags = HABEO_REFERO,*/
2771 .it_act = mdt_intent_reint,
2772 .it_reint = REINT_OPEN
2775 .it_fmt = &RQF_LDLM_INTENT,
2776 .it_flags = MUTABOR,
2777 .it_act = mdt_intent_reint,
2778 .it_reint = REINT_OPEN
2781 .it_fmt = &RQF_LDLM_INTENT,
2782 .it_flags = MUTABOR,
2783 .it_act = mdt_intent_reint,
2784 .it_reint = REINT_CREATE
2786 [MDT_IT_GETATTR] = {
2787 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2788 .it_flags = HABEO_REFERO,
2789 .it_act = mdt_intent_getattr
2791 [MDT_IT_READDIR] = {
2797 .it_fmt = &RQF_LDLM_INTENT_GETATTR,
2798 .it_flags = HABEO_REFERO,
2799 .it_act = mdt_intent_getattr
2802 .it_fmt = &RQF_LDLM_INTENT_UNLINK,
2803 .it_flags = MUTABOR,
2805 .it_reint = REINT_UNLINK
2809 .it_flags = MUTABOR,
2812 [MDT_IT_GETXATTR] = {
2819 int mdt_intent_lock_replace(struct mdt_thread_info *info,
2820 struct ldlm_lock **lockp,
2821 struct ldlm_lock *new_lock,
2822 struct mdt_lock_handle *lh,
2825 struct ptlrpc_request *req = mdt_info_req(info);
2826 struct ldlm_lock *lock = *lockp;
2829 * Get new lock only for cases when possible resent did not find any
2832 if (new_lock == NULL)
2833 new_lock = ldlm_handle2lock_long(&lh->mlh_reg_lh, 0);
2835 if (new_lock == NULL && (flags & LDLM_FL_INTENT_ONLY)) {
2836 lh->mlh_reg_lh.cookie = 0;
2840 LASSERTF(new_lock != NULL,
2841 "lockh "LPX64"\n", lh->mlh_reg_lh.cookie);
2844 * If we've already given this lock to a client once, then we should
2845 * have no readers or writers. Otherwise, we should have one reader
2846 * _or_ writer ref (which will be zeroed below) before returning the
2849 if (new_lock->l_export == req->rq_export) {
2850 LASSERT(new_lock->l_readers + new_lock->l_writers == 0);
2852 LASSERT(new_lock->l_export == NULL);
2853 LASSERT(new_lock->l_readers + new_lock->l_writers == 1);
2858 if (new_lock->l_export == req->rq_export) {
2860 * Already gave this to the client, which means that we
2861 * reconstructed a reply.
2863 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) &
2865 lh->mlh_reg_lh.cookie = 0;
2866 RETURN(ELDLM_LOCK_REPLACED);
2870 * Fixup the lock to be given to the client.
2872 lock_res_and_lock(new_lock);
2873 /* Zero new_lock->l_readers and new_lock->l_writers without triggering
2874 * possible blocking AST. */
2875 while (new_lock->l_readers > 0) {
2876 lu_ref_del(&new_lock->l_reference, "reader", new_lock);
2877 lu_ref_del(&new_lock->l_reference, "user", new_lock);
2878 new_lock->l_readers--;
2880 while (new_lock->l_writers > 0) {
2881 lu_ref_del(&new_lock->l_reference, "writer", new_lock);
2882 lu_ref_del(&new_lock->l_reference, "user", new_lock);
2883 new_lock->l_writers--;
2886 new_lock->l_export = class_export_get(req->rq_export);
2887 new_lock->l_blocking_ast = lock->l_blocking_ast;
2888 new_lock->l_completion_ast = lock->l_completion_ast;
2889 new_lock->l_remote_handle = lock->l_remote_handle;
2890 new_lock->l_flags &= ~LDLM_FL_LOCAL;
2892 unlock_res_and_lock(new_lock);
2894 lustre_hash_add(new_lock->l_export->exp_lock_hash,
2895 &new_lock->l_remote_handle,
2896 &new_lock->l_exp_hash);
2898 LDLM_LOCK_RELEASE(new_lock);
2899 lh->mlh_reg_lh.cookie = 0;
2901 RETURN(ELDLM_LOCK_REPLACED);
2904 static void mdt_intent_fixup_resent(struct mdt_thread_info *info,
2905 struct ldlm_lock *new_lock,
2906 struct ldlm_lock **old_lock,
2907 struct mdt_lock_handle *lh)
2909 struct ptlrpc_request *req = mdt_info_req(info);
2910 struct obd_export *exp = req->rq_export;
2911 struct lustre_handle remote_hdl;
2912 struct ldlm_request *dlmreq;
2913 struct ldlm_lock *lock;
2915 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))
2918 dlmreq = req_capsule_client_get(info->mti_pill, &RMF_DLM_REQ);
2919 remote_hdl = dlmreq->lock_handle[0];
2921 lock = lustre_hash_lookup(exp->exp_lock_hash, &remote_hdl);
2923 if (lock != new_lock) {
2924 lh->mlh_reg_lh.cookie = lock->l_handle.h_cookie;
2925 lh->mlh_reg_mode = lock->l_granted_mode;
2927 LDLM_DEBUG(lock, "Restoring lock cookie");
2928 DEBUG_REQ(D_DLMTRACE, req,
2929 "restoring lock cookie "LPX64,
2930 lh->mlh_reg_lh.cookie);
2932 *old_lock = LDLM_LOCK_GET(lock);
2933 lh_put(exp->exp_lock_hash, &lock->l_exp_hash);
2937 lh_put(exp->exp_lock_hash, &lock->l_exp_hash);
2941 * If the xid matches, then we know this is a resent request, and allow
2942 * it. (It's probably an OPEN, for which we don't send a lock.
2944 if (req_xid_is_last(req))
2948 * This remote handle isn't enqueued, so we never received or processed
2949 * this request. Clear MSG_RESENT, because it can be handled like any
2950 * normal request now.
2952 lustre_msg_clear_flags(req->rq_reqmsg, MSG_RESENT);
2954 DEBUG_REQ(D_DLMTRACE, req, "no existing lock with rhandle "LPX64,
2958 static int mdt_intent_getattr(enum mdt_it_code opcode,
2959 struct mdt_thread_info *info,
2960 struct ldlm_lock **lockp,
2963 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
2964 struct ldlm_lock *new_lock = NULL;
2966 struct ldlm_reply *ldlm_rep;
2967 struct ptlrpc_request *req;
2968 struct mdt_body *reqbody;
2969 struct mdt_body *repbody;
2973 reqbody = req_capsule_client_get(info->mti_pill, &RMF_MDT_BODY);
2976 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2979 info->mti_spec.sp_ck_split = !!(reqbody->valid & OBD_MD_FLCKSPLIT);
2980 info->mti_cross_ref = !!(reqbody->valid & OBD_MD_FLCROSSREF);
2981 repbody->eadatasize = 0;
2982 repbody->aclsize = 0;
2986 child_bits = MDS_INODELOCK_LOOKUP;
2988 case MDT_IT_GETATTR:
2989 child_bits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE;
2992 CERROR("Unhandled till now");
2993 GOTO(out_shrink, rc = -EINVAL);
2996 rc = mdt_init_ucred(info, reqbody);
2998 GOTO(out_shrink, rc);
3000 req = info->mti_pill->rc_req;
3001 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3002 mdt_set_disposition(info, ldlm_rep, DISP_IT_EXECD);
3004 /* Get lock from request for possible resent case. */
3005 mdt_intent_fixup_resent(info, *lockp, &new_lock, lhc);
3007 ldlm_rep->lock_policy_res2 =
3008 mdt_getattr_name_lock(info, lhc, child_bits, ldlm_rep);
3010 if (mdt_get_disposition(ldlm_rep, DISP_LOOKUP_NEG))
3011 ldlm_rep->lock_policy_res2 = 0;
3012 if (!mdt_get_disposition(ldlm_rep, DISP_LOOKUP_POS) ||
3013 ldlm_rep->lock_policy_res2) {
3014 lhc->mlh_reg_lh.cookie = 0ull;
3015 GOTO(out_ucred, rc = ELDLM_LOCK_ABORTED);
3018 rc = mdt_intent_lock_replace(info, lockp, new_lock, lhc, flags);
3021 mdt_exit_ucred(info);
3023 mdt_shrink_reply(info);
3027 static int mdt_intent_reint(enum mdt_it_code opcode,
3028 struct mdt_thread_info *info,
3029 struct ldlm_lock **lockp,
3032 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_RMT];
3033 struct ldlm_reply *rep = NULL;
3037 static const struct req_format *intent_fmts[REINT_MAX] = {
3038 [REINT_CREATE] = &RQF_LDLM_INTENT_CREATE,
3039 [REINT_OPEN] = &RQF_LDLM_INTENT_OPEN
3044 opc = mdt_reint_opcode(info, intent_fmts);
3048 if (mdt_it_flavor[opcode].it_reint != opc) {
3049 CERROR("Reint code %ld doesn't match intent: %d\n",
3051 RETURN(err_serious(-EPROTO));
3054 /* Get lock from request for possible resent case. */
3055 mdt_intent_fixup_resent(info, *lockp, NULL, lhc);
3057 rc = mdt_reint_internal(info, lhc, opc);
3059 /* Check whether the reply has been packed successfully. */
3060 if (mdt_info_req(info)->rq_repmsg != NULL)
3061 rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
3063 RETURN(err_serious(-EFAULT));
3065 /* MDC expects this in any case */
3067 mdt_set_disposition(info, rep, DISP_LOOKUP_EXECD);
3069 /* Cross-ref case, the lock should be returned to the client */
3070 if (rc == -EREMOTE) {
3071 LASSERT(lustre_handle_is_used(&lhc->mlh_reg_lh));
3072 rep->lock_policy_res2 = 0;
3073 rc = mdt_intent_lock_replace(info, lockp, NULL, lhc, flags);
3076 rep->lock_policy_res2 = clear_serious(rc);
3078 lhc->mlh_reg_lh.cookie = 0ull;
3079 if (rc == -ENOTCONN || rc == -ENODEV) {
3081 * If it is the disconnect error (ENODEV & ENOCONN), the error
3082 * will be returned by rq_status, and client at ptlrpc layer
3083 * will detect this, then disconnect, reconnect the import
3084 * immediately, instead of impacting the following the rpc.
3089 * For other cases, the error will be returned by intent.
3090 * and client will retrieve the result from intent.
3093 * FIXME: when open lock is finished, that should be
3096 RETURN(ELDLM_LOCK_ABORTED);
3100 static int mdt_intent_code(long itcode)
3108 case IT_OPEN|IT_CREAT:
3115 rc = MDT_IT_READDIR;
3118 rc = MDT_IT_GETATTR;
3130 rc = MDT_IT_GETXATTR;
3133 CERROR("Unknown intent opcode: %ld\n", itcode);
3140 static int mdt_intent_opc(long itopc, struct mdt_thread_info *info,
3141 struct ldlm_lock **lockp, int flags)
3143 struct req_capsule *pill;
3144 struct mdt_it_flavor *flv;
3149 opc = mdt_intent_code(itopc);
3153 pill = info->mti_pill;
3154 flv = &mdt_it_flavor[opc];
3156 if (flv->it_fmt != NULL)
3157 req_capsule_extend(pill, flv->it_fmt);
3159 rc = mdt_unpack_req_pack_rep(info, flv->it_flags);
3161 struct ptlrpc_request *req = mdt_info_req(info);
3162 if (flv->it_flags & MUTABOR &&
3163 req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
3166 if (rc == 0 && flv->it_act != NULL) {
3167 /* execute policy */
3168 rc = flv->it_act(opc, info, lockp, flags);
3175 static int mdt_intent_policy(struct ldlm_namespace *ns,
3176 struct ldlm_lock **lockp, void *req_cookie,
3177 ldlm_mode_t mode, int flags, void *data)
3179 struct mdt_thread_info *info;
3180 struct ptlrpc_request *req = req_cookie;
3181 struct ldlm_intent *it;
3182 struct req_capsule *pill;
3187 LASSERT(req != NULL);
3189 info = lu_context_key_get(&req->rq_svc_thread->t_env->le_ctx,
3191 LASSERT(info != NULL);
3192 pill = info->mti_pill;
3193 LASSERT(pill->rc_req == req);
3195 if (req->rq_reqmsg->lm_bufcount > DLM_INTENT_IT_OFF) {
3196 req_capsule_extend(pill, &RQF_LDLM_INTENT);
3197 it = req_capsule_client_get(pill, &RMF_LDLM_INTENT);
3199 const struct ldlm_request *dlmreq;
3202 rc = mdt_intent_opc(it->opc, info, lockp, flags);
3207 * Lock without inodebits makes no sense and will oops
3208 * later in ldlm. Let's check it now to see if we have
3209 * wrong lock from client or bits get corrupted
3210 * somewhere in mdt_intent_opc().
3212 dlmreq = info->mti_dlm_req;
3213 req_bits = dlmreq->lock_desc.l_policy_data.l_inodebits.bits;
3214 LASSERT(req_bits != 0);
3217 rc = err_serious(-EFAULT);
3219 /* No intent was provided */
3220 LASSERT(pill->rc_fmt == &RQF_LDLM_ENQUEUE);
3221 rc = req_capsule_server_pack(pill);
3223 rc = err_serious(rc);
3231 static void mdt_seq_adjust(const struct lu_env *env,
3232 struct mdt_device *m, int lost)
3234 struct md_site *ms = mdt_md_site(m);
3235 struct lu_range out;
3238 LASSERT(ms && ms->ms_server_seq);
3240 /* get extra seq from seq_server, moving it's range up */
3241 while (lost-- > 0) {
3242 seq_server_alloc_meta(ms->ms_server_seq, NULL, &out, env);
3247 static int mdt_seq_fini(const struct lu_env *env,
3248 struct mdt_device *m)
3250 struct md_site *ms = mdt_md_site(m);
3254 if (ms->ms_server_seq) {
3255 seq_server_fini(ms->ms_server_seq, env);
3256 OBD_FREE_PTR(ms->ms_server_seq);
3257 ms->ms_server_seq = NULL;
3260 if (ms->ms_control_seq) {
3261 seq_server_fini(ms->ms_control_seq, env);
3262 OBD_FREE_PTR(ms->ms_control_seq);
3263 ms->ms_control_seq = NULL;
3266 if (ms->ms_client_seq) {
3267 seq_client_fini(ms->ms_client_seq);
3268 OBD_FREE_PTR(ms->ms_client_seq);
3269 ms->ms_client_seq = NULL;
3276 static int mdt_seq_init(const struct lu_env *env,
3278 struct mdt_device *m)
3285 ms = mdt_md_site(m);
3288 * This is sequence-controller node. Init seq-controller server on local
3291 if (ms->ms_node_id == 0) {
3292 LASSERT(ms->ms_control_seq == NULL);
3294 OBD_ALLOC_PTR(ms->ms_control_seq);
3295 if (ms->ms_control_seq == NULL)
3298 rc = seq_server_init(ms->ms_control_seq,
3299 m->mdt_bottom, uuid,
3300 LUSTRE_SEQ_CONTROLLER,
3304 GOTO(out_seq_fini, rc);
3306 OBD_ALLOC_PTR(ms->ms_client_seq);
3307 if (ms->ms_client_seq == NULL)
3308 GOTO(out_seq_fini, rc = -ENOMEM);
3310 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3311 if (prefix == NULL) {
3312 OBD_FREE_PTR(ms->ms_client_seq);
3313 GOTO(out_seq_fini, rc = -ENOMEM);
3316 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
3320 * Init seq-controller client after seq-controller server is
3321 * ready. Pass ms->ms_control_seq to it for direct talking.
3323 rc = seq_client_init(ms->ms_client_seq, NULL,
3324 LUSTRE_SEQ_METADATA, prefix,
3325 ms->ms_control_seq);
3326 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3329 GOTO(out_seq_fini, rc);
3332 /* Init seq-server on local MDT */
3333 LASSERT(ms->ms_server_seq == NULL);
3335 OBD_ALLOC_PTR(ms->ms_server_seq);
3336 if (ms->ms_server_seq == NULL)
3337 GOTO(out_seq_fini, rc = -ENOMEM);
3339 rc = seq_server_init(ms->ms_server_seq,
3340 m->mdt_bottom, uuid,
3344 GOTO(out_seq_fini, rc = -ENOMEM);
3346 /* Assign seq-controller client to local seq-server. */
3347 if (ms->ms_node_id == 0) {
3348 LASSERT(ms->ms_client_seq != NULL);
3350 rc = seq_server_set_cli(ms->ms_server_seq,
3358 mdt_seq_fini(env, m);
3363 * Init client sequence manager which is used by local MDS to talk to sequence
3364 * controller on remote node.
3366 static int mdt_seq_init_cli(const struct lu_env *env,
3367 struct mdt_device *m,
3368 struct lustre_cfg *cfg)
3370 struct md_site *ms = mdt_md_site(m);
3371 struct obd_device *mdc;
3372 struct obd_uuid *uuidp, *mdcuuidp;
3373 char *uuid_str, *mdc_uuid_str;
3376 struct mdt_thread_info *info;
3377 char *p, *index_string = lustre_cfg_string(cfg, 2);
3380 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3381 uuidp = &info->mti_u.uuid[0];
3382 mdcuuidp = &info->mti_u.uuid[1];
3384 LASSERT(index_string);
3386 index = simple_strtol(index_string, &p, 10);
3388 CERROR("Invalid index in lustre_cgf, offset 2\n");
3392 /* check if this is adding the first MDC and controller is not yet
3394 if (index != 0 || ms->ms_client_seq)
3397 uuid_str = lustre_cfg_string(cfg, 1);
3398 mdc_uuid_str = lustre_cfg_string(cfg, 4);
3399 obd_str2uuid(uuidp, uuid_str);
3400 obd_str2uuid(mdcuuidp, mdc_uuid_str);
3402 mdc = class_find_client_obd(uuidp, LUSTRE_MDC_NAME, mdcuuidp);
3404 CERROR("can't find controller MDC by uuid %s\n",
3407 } else if (!mdc->obd_set_up) {
3408 CERROR("target %s not set up\n", mdc->obd_name);
3411 LASSERT(ms->ms_control_exp);
3412 OBD_ALLOC_PTR(ms->ms_client_seq);
3413 if (ms->ms_client_seq != NULL) {
3416 OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
3420 snprintf(prefix, MAX_OBD_NAME + 5, "ctl-%s",
3423 rc = seq_client_init(ms->ms_client_seq,
3425 LUSTRE_SEQ_METADATA,
3427 OBD_FREE(prefix, MAX_OBD_NAME + 5);
3434 LASSERT(ms->ms_server_seq != NULL);
3435 rc = seq_server_set_cli(ms->ms_server_seq, ms->ms_client_seq,
3442 static void mdt_seq_fini_cli(struct mdt_device *m)
3448 ms = mdt_md_site(m);
3451 if (ms->ms_server_seq)
3452 seq_server_set_cli(ms->ms_server_seq,
3455 if (ms->ms_control_exp) {
3456 class_export_put(ms->ms_control_exp);
3457 ms->ms_control_exp = NULL;
3466 static int mdt_fld_fini(const struct lu_env *env,
3467 struct mdt_device *m)
3469 struct md_site *ms = mdt_md_site(m);
3472 if (ms && ms->ms_server_fld) {
3473 fld_server_fini(ms->ms_server_fld, env);
3474 OBD_FREE_PTR(ms->ms_server_fld);
3475 ms->ms_server_fld = NULL;
3481 static int mdt_fld_init(const struct lu_env *env,
3483 struct mdt_device *m)
3489 ms = mdt_md_site(m);
3491 OBD_ALLOC_PTR(ms->ms_server_fld);
3492 if (ms->ms_server_fld == NULL)
3493 RETURN(rc = -ENOMEM);
3495 rc = fld_server_init(ms->ms_server_fld,
3496 m->mdt_bottom, uuid, env);
3498 OBD_FREE_PTR(ms->ms_server_fld);
3499 ms->ms_server_fld = NULL;
3506 /* device init/fini methods */
3507 static void mdt_stop_ptlrpc_service(struct mdt_device *m)
3510 if (m->mdt_regular_service != NULL) {
3511 ptlrpc_unregister_service(m->mdt_regular_service);
3512 m->mdt_regular_service = NULL;
3514 if (m->mdt_readpage_service != NULL) {
3515 ptlrpc_unregister_service(m->mdt_readpage_service);
3516 m->mdt_readpage_service = NULL;
3518 if (m->mdt_xmds_service != NULL) {
3519 ptlrpc_unregister_service(m->mdt_xmds_service);
3520 m->mdt_xmds_service = NULL;
3522 if (m->mdt_setattr_service != NULL) {
3523 ptlrpc_unregister_service(m->mdt_setattr_service);
3524 m->mdt_setattr_service = NULL;
3526 if (m->mdt_mdsc_service != NULL) {
3527 ptlrpc_unregister_service(m->mdt_mdsc_service);
3528 m->mdt_mdsc_service = NULL;
3530 if (m->mdt_mdss_service != NULL) {
3531 ptlrpc_unregister_service(m->mdt_mdss_service);
3532 m->mdt_mdss_service = NULL;
3534 if (m->mdt_dtss_service != NULL) {
3535 ptlrpc_unregister_service(m->mdt_dtss_service);
3536 m->mdt_dtss_service = NULL;
3538 if (m->mdt_fld_service != NULL) {
3539 ptlrpc_unregister_service(m->mdt_fld_service);
3540 m->mdt_fld_service = NULL;
3545 static int mdt_start_ptlrpc_service(struct mdt_device *m)
3548 static struct ptlrpc_service_conf conf;
3549 cfs_proc_dir_entry_t *procfs_entry;
3552 procfs_entry = m->mdt_md_dev.md_lu_dev.ld_obd->obd_proc_entry;
3554 conf = (typeof(conf)) {
3555 .psc_nbufs = MDS_NBUFS,
3556 .psc_bufsize = MDS_BUFSIZE,
3557 .psc_max_req_size = MDS_MAXREQSIZE,
3558 .psc_max_reply_size = MDS_MAXREPSIZE,
3559 .psc_req_portal = MDS_REQUEST_PORTAL,
3560 .psc_rep_portal = MDC_REPLY_PORTAL,
3561 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3563 * We'd like to have a mechanism to set this on a per-device
3564 * basis, but alas...
3566 .psc_min_threads = min(max(mdt_num_threads, MDT_MIN_THREADS),
3568 .psc_max_threads = MDT_MAX_THREADS,
3569 .psc_ctx_tags = LCT_MD_THREAD
3572 m->mdt_ldlm_client = &m->mdt_md_dev.md_lu_dev.ld_obd->obd_ldlm_client;
3573 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
3574 "mdt_ldlm_client", m->mdt_ldlm_client);
3576 m->mdt_regular_service =
3577 ptlrpc_init_svc_conf(&conf, mdt_regular_handle, LUSTRE_MDT_NAME,
3578 procfs_entry, target_print_req,
3580 if (m->mdt_regular_service == NULL)
3583 rc = ptlrpc_start_threads(NULL, m->mdt_regular_service);
3585 GOTO(err_mdt_svc, rc);
3588 * readpage service configuration. Parameters have to be adjusted,
3591 conf = (typeof(conf)) {
3592 .psc_nbufs = MDS_NBUFS,
3593 .psc_bufsize = MDS_BUFSIZE,
3594 .psc_max_req_size = MDS_MAXREQSIZE,
3595 .psc_max_reply_size = MDS_MAXREPSIZE,
3596 .psc_req_portal = MDS_READPAGE_PORTAL,
3597 .psc_rep_portal = MDC_REPLY_PORTAL,
3598 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3599 .psc_min_threads = min(max(mdt_num_threads, MDT_MIN_THREADS),
3601 .psc_max_threads = MDT_MAX_THREADS,
3602 .psc_ctx_tags = LCT_MD_THREAD
3604 m->mdt_readpage_service =
3605 ptlrpc_init_svc_conf(&conf, mdt_readpage_handle,
3606 LUSTRE_MDT_NAME "_readpage",
3607 procfs_entry, target_print_req,"mdt_rdpg");
3609 if (m->mdt_readpage_service == NULL) {
3610 CERROR("failed to start readpage service\n");
3611 GOTO(err_mdt_svc, rc = -ENOMEM);
3614 rc = ptlrpc_start_threads(NULL, m->mdt_readpage_service);
3617 * setattr service configuration.
3619 conf = (typeof(conf)) {
3620 .psc_nbufs = MDS_NBUFS,
3621 .psc_bufsize = MDS_BUFSIZE,
3622 .psc_max_req_size = MDS_MAXREQSIZE,
3623 .psc_max_reply_size = MDS_MAXREPSIZE,
3624 .psc_req_portal = MDS_SETATTR_PORTAL,
3625 .psc_rep_portal = MDC_REPLY_PORTAL,
3626 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3627 .psc_min_threads = min(max(mdt_num_threads, MDT_MIN_THREADS),
3629 .psc_max_threads = MDT_MAX_THREADS,
3630 .psc_ctx_tags = LCT_MD_THREAD
3633 m->mdt_setattr_service =
3634 ptlrpc_init_svc_conf(&conf, mdt_regular_handle,
3635 LUSTRE_MDT_NAME "_setattr",
3636 procfs_entry, target_print_req,"mdt_attr");
3638 if (!m->mdt_setattr_service) {
3639 CERROR("failed to start setattr service\n");
3640 GOTO(err_mdt_svc, rc = -ENOMEM);
3643 rc = ptlrpc_start_threads(NULL, m->mdt_setattr_service);
3645 GOTO(err_mdt_svc, rc);
3648 * sequence controller service configuration
3650 conf = (typeof(conf)) {
3651 .psc_nbufs = MDS_NBUFS,
3652 .psc_bufsize = MDS_BUFSIZE,
3653 .psc_max_req_size = SEQ_MAXREQSIZE,
3654 .psc_max_reply_size = SEQ_MAXREPSIZE,
3655 .psc_req_portal = SEQ_CONTROLLER_PORTAL,
3656 .psc_rep_portal = MDC_REPLY_PORTAL,
3657 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3658 .psc_min_threads = SEQ_NUM_THREADS,
3659 .psc_max_threads = SEQ_NUM_THREADS,
3660 .psc_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
3663 m->mdt_mdsc_service =
3664 ptlrpc_init_svc_conf(&conf, mdt_mdsc_handle,
3665 LUSTRE_MDT_NAME"_mdsc",
3666 procfs_entry, target_print_req,"mdt_mdsc");
3667 if (!m->mdt_mdsc_service) {
3668 CERROR("failed to start seq controller service\n");
3669 GOTO(err_mdt_svc, rc = -ENOMEM);
3672 rc = ptlrpc_start_threads(NULL, m->mdt_mdsc_service);
3674 GOTO(err_mdt_svc, rc);
3677 * metadata sequence server service configuration
3679 conf = (typeof(conf)) {
3680 .psc_nbufs = MDS_NBUFS,
3681 .psc_bufsize = MDS_BUFSIZE,
3682 .psc_max_req_size = SEQ_MAXREQSIZE,
3683 .psc_max_reply_size = SEQ_MAXREPSIZE,
3684 .psc_req_portal = SEQ_METADATA_PORTAL,
3685 .psc_rep_portal = MDC_REPLY_PORTAL,
3686 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3687 .psc_min_threads = SEQ_NUM_THREADS,
3688 .psc_max_threads = SEQ_NUM_THREADS,
3689 .psc_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
3692 m->mdt_mdss_service =
3693 ptlrpc_init_svc_conf(&conf, mdt_mdss_handle,
3694 LUSTRE_MDT_NAME"_mdss",
3695 procfs_entry, target_print_req,"mdt_mdss");
3696 if (!m->mdt_mdss_service) {
3697 CERROR("failed to start metadata seq server service\n");
3698 GOTO(err_mdt_svc, rc = -ENOMEM);
3701 rc = ptlrpc_start_threads(NULL, m->mdt_mdss_service);
3703 GOTO(err_mdt_svc, rc);
3707 * Data sequence server service configuration. We want to have really
3708 * cluster-wide sequences space. This is why we start only one sequence
3709 * controller which manages space.
3711 conf = (typeof(conf)) {
3712 .psc_nbufs = MDS_NBUFS,
3713 .psc_bufsize = MDS_BUFSIZE,
3714 .psc_max_req_size = SEQ_MAXREQSIZE,
3715 .psc_max_reply_size = SEQ_MAXREPSIZE,
3716 .psc_req_portal = SEQ_DATA_PORTAL,
3717 .psc_rep_portal = OSC_REPLY_PORTAL,
3718 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3719 .psc_min_threads = SEQ_NUM_THREADS,
3720 .psc_max_threads = SEQ_NUM_THREADS,
3721 .psc_ctx_tags = LCT_MD_THREAD|LCT_DT_THREAD
3724 m->mdt_dtss_service =
3725 ptlrpc_init_svc_conf(&conf, mdt_dtss_handle,
3726 LUSTRE_MDT_NAME"_dtss",
3727 procfs_entry, target_print_req,"mdt_dtss");
3728 if (!m->mdt_dtss_service) {
3729 CERROR("failed to start data seq server service\n");
3730 GOTO(err_mdt_svc, rc = -ENOMEM);
3733 rc = ptlrpc_start_threads(NULL, m->mdt_dtss_service);
3735 GOTO(err_mdt_svc, rc);
3737 /* FLD service start */
3738 conf = (typeof(conf)) {
3739 .psc_nbufs = MDS_NBUFS,
3740 .psc_bufsize = MDS_BUFSIZE,
3741 .psc_max_req_size = FLD_MAXREQSIZE,
3742 .psc_max_reply_size = FLD_MAXREPSIZE,
3743 .psc_req_portal = FLD_REQUEST_PORTAL,
3744 .psc_rep_portal = MDC_REPLY_PORTAL,
3745 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3746 .psc_min_threads = FLD_NUM_THREADS,
3747 .psc_max_threads = FLD_NUM_THREADS,
3748 .psc_ctx_tags = LCT_DT_THREAD|LCT_MD_THREAD
3751 m->mdt_fld_service =
3752 ptlrpc_init_svc_conf(&conf, mdt_fld_handle,
3753 LUSTRE_MDT_NAME"_fld",
3754 procfs_entry, target_print_req, "mdt_fld");
3755 if (!m->mdt_fld_service) {
3756 CERROR("failed to start fld service\n");
3757 GOTO(err_mdt_svc, rc = -ENOMEM);
3760 rc = ptlrpc_start_threads(NULL, m->mdt_fld_service);
3762 GOTO(err_mdt_svc, rc);
3765 * mds-mds service configuration. Separate portal is used to allow
3766 * mds-mds requests be not blocked during recovery.
3768 conf = (typeof(conf)) {
3769 .psc_nbufs = MDS_NBUFS,
3770 .psc_bufsize = MDS_BUFSIZE,
3771 .psc_max_req_size = MDS_MAXREQSIZE,
3772 .psc_max_reply_size = MDS_MAXREPSIZE,
3773 .psc_req_portal = MDS_MDS_PORTAL,
3774 .psc_rep_portal = MDC_REPLY_PORTAL,
3775 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
3776 .psc_min_threads = min(max(mdt_num_threads, MDT_MIN_THREADS),
3778 .psc_max_threads = MDT_MAX_THREADS,
3779 .psc_ctx_tags = LCT_MD_THREAD
3781 m->mdt_xmds_service =
3782 ptlrpc_init_svc_conf(&conf, mdt_xmds_handle,
3783 LUSTRE_MDT_NAME "_mds",
3784 procfs_entry, target_print_req,"mdt_xmds");
3786 if (m->mdt_xmds_service == NULL) {
3787 CERROR("failed to start readpage service\n");
3788 GOTO(err_mdt_svc, rc = -ENOMEM);
3791 rc = ptlrpc_start_threads(NULL, m->mdt_xmds_service);
3793 GOTO(err_mdt_svc, rc);
3798 mdt_stop_ptlrpc_service(m);
3803 static void mdt_stack_fini(const struct lu_env *env,
3804 struct mdt_device *m, struct lu_device *top)
3806 struct obd_device *obd = m->mdt_md_dev.md_lu_dev.ld_obd;
3807 struct lustre_cfg_bufs *bufs;
3808 struct lustre_cfg *lcfg;
3809 struct mdt_thread_info *info;
3813 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
3814 LASSERT(info != NULL);
3816 bufs = &info->mti_u.bufs;
3817 /* process cleanup, pass mdt obd name to get obd umount flags */
3818 lustre_cfg_bufs_reset(bufs, obd->obd_name);
3823 lustre_cfg_bufs_set_string(bufs, 1, flags);
3824 lcfg = lustre_cfg_new(LCFG_CLEANUP, bufs);
3826 CERROR("Cannot alloc lcfg!\n");
3831 top->ld_ops->ldo_process_config(env, top, lcfg);
3832 lustre_cfg_free(lcfg);
3834 lu_stack_fini(env, top);
3835 m->mdt_child = NULL;
3836 m->mdt_bottom = NULL;
3839 static struct lu_device *mdt_layer_setup(struct lu_env *env,
3840 const char *typename,
3841 struct lu_device *child,
3842 struct lustre_cfg *cfg)
3844 const char *dev = lustre_cfg_string(cfg, 0);
3845 struct obd_type *type;
3846 struct lu_device_type *ldt;
3847 struct lu_device *d;
3852 type = class_get_type(typename);
3854 CERROR("Unknown type: '%s'\n", typename);
3855 GOTO(out, rc = -ENODEV);
3858 rc = lu_env_refill((struct lu_env *)env);
3860 CERROR("Failure to refill session: '%d'\n", rc);
3866 CERROR("type: '%s'\n", typename);
3867 GOTO(out_type, rc = -EINVAL);
3870 ldt->ldt_obd_type = type;
3871 d = ldt->ldt_ops->ldto_device_alloc(env, ldt, cfg);
3873 CERROR("Cannot allocate device: '%s'\n", typename);
3874 GOTO(out_type, rc = -ENODEV);
3877 LASSERT(child->ld_site);
3878 d->ld_site = child->ld_site;
3881 rc = ldt->ldt_ops->ldto_device_init(env, d, dev, child);
3883 CERROR("can't init device '%s', rc %d\n", typename, rc);
3884 GOTO(out_alloc, rc);
3887 lu_ref_add(&d->ld_reference, "lu-stack", &lu_site_init);
3892 ldt->ldt_ops->ldto_device_free(env, d);
3895 class_put_type(type);
3900 static int mdt_stack_init(struct lu_env *env,
3901 struct mdt_device *m, struct lustre_cfg *cfg)
3903 struct lu_device *d = &m->mdt_md_dev.md_lu_dev;
3904 struct lu_device *tmp;
3905 struct md_device *md;
3909 /* init the stack */
3910 tmp = mdt_layer_setup(env, LUSTRE_OSD_NAME, d, cfg);
3912 RETURN(PTR_ERR(tmp));
3914 m->mdt_bottom = lu2dt_dev(tmp);
3916 tmp = mdt_layer_setup(env, LUSTRE_MDD_NAME, d, cfg);
3918 GOTO(out, rc = PTR_ERR(tmp));
3923 tmp = mdt_layer_setup(env, LUSTRE_CMM_NAME, d, cfg);
3925 GOTO(out, rc = PTR_ERR(tmp));
3928 /*set mdd upcall device*/
3929 md_upcall_dev_set(md, lu2md_dev(d));
3932 /*set cmm upcall device*/
3933 md_upcall_dev_set(md, &m->mdt_md_dev);
3935 m->mdt_child = lu2md_dev(d);
3937 /* process setup config */
3938 tmp = &m->mdt_md_dev.md_lu_dev;
3939 rc = tmp->ld_ops->ldo_process_config(env, tmp, cfg);
3942 /* fini from last known good lu_device */
3944 mdt_stack_fini(env, m, d);
3949 static void mdt_fini(const struct lu_env *env, struct mdt_device *m)
3951 struct md_device *next = m->mdt_child;
3952 struct lu_device *d = &m->mdt_md_dev.md_lu_dev;
3953 struct lu_site *ls = d->ld_site;
3954 struct obd_device *obd = m->mdt_md_dev.md_lu_dev.ld_obd;
3957 /* At this point, obd exports might still be on the "obd_zombie_exports"
3958 * list, and obd_zombie_impexp_thread() is trying to destroy them.
3959 * We wait a little bit until all exports (except the self-export)
3960 * have been destroyed, because the whole mdt stack might be accessed
3961 * in mdt_destroy_export(). This will not be a long time, maybe one or
3962 * two seconds are enough. This is not a problem while umounting.
3964 * The three references that should be remaining are the
3965 * obd_self_export and the attach and setup references.
3967 while (atomic_read(&obd->obd_refcount) > 3)
3968 cfs_schedule_timeout(CFS_TASK_UNINT, cfs_time_seconds(1));
3970 ping_evictor_stop();
3972 target_recovery_fini(obd);
3973 mdt_stop_ptlrpc_service(m);
3974 obd_zombie_barrier();
3975 mdt_fs_cleanup(env, m);
3977 upcall_cache_cleanup(m->mdt_identity_cache);
3978 m->mdt_identity_cache = NULL;
3980 if (m->mdt_namespace != NULL) {
3981 ldlm_namespace_free(m->mdt_namespace, NULL, d->ld_obd->obd_force);
3982 d->ld_obd->obd_namespace = m->mdt_namespace = NULL;
3985 mdt_seq_fini(env, m);
3986 mdt_seq_fini_cli(m);
3987 mdt_fld_fini(env, m);
3989 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
3990 lprocfs_free_per_client_stats(obd);
3991 lprocfs_free_obd_stats(obd);
3992 ptlrpc_lprocfs_unregister_obd(d->ld_obd);
3993 lprocfs_obd_cleanup(d->ld_obd);
3995 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
3997 next->md_ops->mdo_init_capa_ctxt(env, next, 0, 0, 0, NULL);
3998 cfs_timer_disarm(&m->mdt_ck_timer);
3999 mdt_ck_thread_stop(m);
4001 /* finish the stack */
4002 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4005 struct md_site *mite;
4008 mite = lu_site2md(ls);
4012 LASSERT(atomic_read(&d->ld_ref) == 0);
4017 static void fsoptions_to_mdt_flags(struct mdt_device *m, char *options)
4021 #ifdef CONFIG_FS_POSIX_ACL
4022 /* ACLs should be enabled by default (b=13829) */
4023 m->mdt_opts.mo_acl = 1;
4024 LCONSOLE_INFO("Enabling ACL\n");
4026 m->mdt_opts.mo_acl = 0;
4027 LCONSOLE_INFO("Disabling ACL\n");
4036 while (*p && *p != ',')
4040 if ((len == sizeof("user_xattr") - 1) &&
4041 (memcmp(options, "user_xattr", len) == 0)) {
4042 m->mdt_opts.mo_user_xattr = 1;
4043 LCONSOLE_INFO("Enabling user_xattr\n");
4044 } else if ((len == sizeof("nouser_xattr") - 1) &&
4045 (memcmp(options, "nouser_xattr", len) == 0)) {
4046 m->mdt_opts.mo_user_xattr = 0;
4047 LCONSOLE_INFO("Disabling user_xattr\n");
4048 } else if ((len == sizeof("noacl") - 1) &&
4049 (memcmp(options, "noacl", len) == 0)) {
4050 m->mdt_opts.mo_acl = 0;
4051 LCONSOLE_INFO("Disabling ACL\n");
4058 int mdt_postrecov(const struct lu_env *, struct mdt_device *);
4060 static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
4061 struct lu_device_type *ldt, struct lustre_cfg *cfg)
4063 struct lprocfs_static_vars lvars;
4064 struct mdt_thread_info *info;
4065 struct obd_device *obd;
4066 const char *dev = lustre_cfg_string(cfg, 0);
4067 const char *num = lustre_cfg_string(cfg, 2);
4068 struct lustre_mount_info *lmi;
4069 struct lustre_sb_info *lsi;
4071 struct md_site *mite;
4072 const char *identity_upcall = "NONE";
4076 md_device_init(&m->mdt_md_dev, ldt);
4078 * Environment (env) might be missing mdt_thread_key values at that
4079 * point, if device is allocated when mdt_thread_key is in QUIESCENT
4082 * Usually device allocation path doesn't use module key values, but
4083 * mdt has to do a lot of work here, so allocate key value.
4085 rc = lu_env_refill((struct lu_env *)env);
4089 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4090 LASSERT(info != NULL);
4092 obd = class_name2obd(dev);
4093 LASSERT(obd != NULL);
4095 spin_lock_init(&m->mdt_transno_lock);
4097 m->mdt_max_mdsize = MAX_MD_SIZE;
4098 m->mdt_max_cookiesize = sizeof(struct llog_cookie);
4100 m->mdt_opts.mo_user_xattr = 0;
4101 m->mdt_opts.mo_acl = 0;
4102 m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
4103 lmi = server_get_mount_2(dev);
4105 CERROR("Cannot get mount info for %s!\n", dev);
4108 lsi = s2lsi(lmi->lmi_sb);
4109 fsoptions_to_mdt_flags(m, lsi->lsi_lmd->lmd_opts);
4110 server_put_mount_2(dev, lmi->lmi_mnt);
4113 rwlock_init(&m->mdt_sptlrpc_lock);
4114 sptlrpc_rule_set_init(&m->mdt_sptlrpc_rset);
4116 spin_lock_init(&m->mdt_ioepoch_lock);
4117 m->mdt_opts.mo_compat_resname = 0;
4118 m->mdt_capa_timeout = CAPA_TIMEOUT;
4119 m->mdt_capa_alg = CAPA_HMAC_ALG_SHA1;
4120 m->mdt_ck_timeout = CAPA_KEY_TIMEOUT;
4122 spin_lock_init(&m->mdt_client_bitmap_lock);
4124 OBD_ALLOC_PTR(mite);
4130 m->mdt_md_dev.md_lu_dev.ld_ops = &mdt_lu_ops;
4131 m->mdt_md_dev.md_lu_dev.ld_obd = obd;
4132 /* set this lu_device to obd, because error handling need it */
4133 obd->obd_lu_dev = &m->mdt_md_dev.md_lu_dev;
4135 rc = lu_site_init(s, &m->mdt_md_dev.md_lu_dev);
4137 CERROR("Can't init lu_site, rc %d\n", rc);
4138 GOTO(err_free_site, rc);
4141 lprocfs_mdt_init_vars(&lvars);
4142 rc = lprocfs_obd_setup(obd, lvars.obd_vars);
4144 CERROR("Can't init lprocfs, rc %d\n", rc);
4145 GOTO(err_fini_site, rc);
4147 ptlrpc_lprocfs_register_obd(obd);
4149 rc = mdt_procfs_init(m, dev);
4151 CERROR("Can't init MDT lprocfs, rc %d\n", rc);
4152 GOTO(err_fini_proc, rc);
4155 obd->obd_proc_exports_entry = proc_mkdir("exports",
4156 obd->obd_proc_entry);
4157 if (obd->obd_proc_exports_entry)
4158 lprocfs_add_simple(obd->obd_proc_exports_entry,
4159 "clear", lprocfs_nid_stats_clear_read,
4160 lprocfs_nid_stats_clear_write, obd, NULL);
4162 /* set server index */
4164 lu_site2md(s)->ms_node_id = simple_strtol(num, NULL, 10);
4166 /* failover is the default
4167 * FIXME: we do not failout mds0/mgs, which may cause some problems.
4168 * assumed whose ls_node_id == 0 XXX
4170 obd->obd_replayable = 1;
4171 /* No connection accepted until configurations will finish */
4172 obd->obd_no_conn = 1;
4174 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
4175 char *str = lustre_cfg_string(cfg, 4);
4176 if (strchr(str, 'n')) {
4177 CWARN("%s: recovery disabled\n", obd->obd_name);
4178 obd->obd_replayable = 0;
4182 /* init the stack */
4183 rc = mdt_stack_init((struct lu_env *)env, m, cfg);
4185 CERROR("Can't init device stack, rc %d\n", rc);
4186 GOTO(err_fini_proc, rc);
4189 rc = mdt_fld_init(env, obd->obd_name, m);
4191 GOTO(err_fini_stack, rc);
4193 rc = mdt_seq_init(env, obd->obd_name, m);
4195 GOTO(err_fini_fld, rc);
4197 snprintf(info->mti_u.ns_name, sizeof info->mti_u.ns_name,
4198 LUSTRE_MDT_NAME"-%p", m);
4199 m->mdt_namespace = ldlm_namespace_new(obd, info->mti_u.ns_name,
4200 LDLM_NAMESPACE_SERVER,
4201 LDLM_NAMESPACE_GREEDY);
4202 if (m->mdt_namespace == NULL)
4203 GOTO(err_fini_seq, rc = -ENOMEM);
4205 ldlm_register_intent(m->mdt_namespace, mdt_intent_policy);
4206 /* set obd_namespace for compatibility with old code */
4207 obd->obd_namespace = m->mdt_namespace;
4209 /* XXX: to support suppgid for ACL, we enable identity_upcall
4210 * by default, otherwise, maybe got unexpected -EACCESS. */
4211 if (m->mdt_opts.mo_acl)
4212 identity_upcall = MDT_IDENTITY_UPCALL_PATH;
4214 m->mdt_identity_cache = upcall_cache_init(obd->obd_name, identity_upcall,
4215 &mdt_identity_upcall_cache_ops);
4216 if (IS_ERR(m->mdt_identity_cache)) {
4217 rc = PTR_ERR(m->mdt_identity_cache);
4218 m->mdt_identity_cache = NULL;
4219 GOTO(err_free_ns, rc);
4222 cfs_timer_init(&m->mdt_ck_timer, mdt_ck_timer_callback, m);
4224 rc = mdt_ck_thread_start(m);
4226 GOTO(err_free_ns, rc);
4228 rc = mdt_fs_setup(env, m, obd);
4232 target_recovery_init(obd, mdt_recovery_handle);
4234 rc = mdt_start_ptlrpc_service(m);
4236 GOTO(err_fs_cleanup, rc);
4238 ping_evictor_start();
4240 rc = lu_site_init_finish(s);
4242 GOTO(err_stop_service, rc);
4244 if (obd->obd_recovering == 0)
4245 mdt_postrecov(env, m);
4247 mdt_init_capa_ctxt(env, m);
4249 /* Reduce the initial timeout on an MDS because it doesn't need such
4250 * a long timeout as an OST does. Adaptive timeouts will adjust this
4251 * value appropriately. */
4252 if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
4253 ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
4258 ping_evictor_stop();
4259 mdt_stop_ptlrpc_service(m);
4261 target_recovery_fini(obd);
4262 mdt_fs_cleanup(env, m);
4264 cfs_timer_disarm(&m->mdt_ck_timer);
4265 mdt_ck_thread_stop(m);
4267 upcall_cache_cleanup(m->mdt_identity_cache);
4268 m->mdt_identity_cache = NULL;
4269 ldlm_namespace_free(m->mdt_namespace, NULL, 0);
4270 obd->obd_namespace = m->mdt_namespace = NULL;
4272 mdt_seq_fini(env, m);
4274 mdt_fld_fini(env, m);
4276 mdt_stack_fini(env, m, md2lu_dev(m->mdt_child));
4279 if (obd->obd_proc_exports_entry)
4280 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
4281 ptlrpc_lprocfs_unregister_obd(obd);
4282 lprocfs_obd_cleanup(obd);
4290 /* used by MGS to process specific configurations */
4291 static int mdt_process_config(const struct lu_env *env,
4292 struct lu_device *d, struct lustre_cfg *cfg)
4294 struct mdt_device *m = mdt_dev(d);
4295 struct md_device *md_next = m->mdt_child;
4296 struct lu_device *next = md2lu_dev(md_next);
4300 switch (cfg->lcfg_command) {
4301 case LCFG_SPTLRPC_CONF: {
4302 struct sptlrpc_conf_log *log;
4303 struct sptlrpc_rule_set tmp_rset;
4305 log = sptlrpc_conf_log_extract(cfg);
4311 sptlrpc_rule_set_init(&tmp_rset);
4313 rc = sptlrpc_rule_set_from_log(&tmp_rset, log);
4315 CERROR("mdt %p: failed get sptlrpc rules: %d\n", m, rc);
4319 write_lock(&m->mdt_sptlrpc_lock);
4320 sptlrpc_rule_set_free(&m->mdt_sptlrpc_rset);
4321 m->mdt_sptlrpc_rset = tmp_rset;
4322 write_unlock(&m->mdt_sptlrpc_lock);
4324 sptlrpc_target_update_exp_flavor(
4325 md2lu_dev(&m->mdt_md_dev)->ld_obd, &tmp_rset);
4330 struct lprocfs_static_vars lvars;
4331 struct obd_device *obd = d->ld_obd;
4333 lprocfs_mdt_init_vars(&lvars);
4334 rc = class_process_proc_param(PARAM_MDT, lvars.obd_vars,
4337 /* we don't understand; pass it on */
4338 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4343 * Add mdc hook to get first MDT uuid and connect it to
4344 * ls->controller to use for seq manager.
4346 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4348 CERROR("Can't add mdc, rc %d\n", rc);
4350 rc = mdt_seq_init_cli(env, mdt_dev(d), cfg);
4353 /* others are passed further */
4354 rc = next->ld_ops->ldo_process_config(env, next, cfg);
4360 static struct lu_object *mdt_object_alloc(const struct lu_env *env,
4361 const struct lu_object_header *hdr,
4362 struct lu_device *d)
4364 struct mdt_object *mo;
4370 struct lu_object *o;
4371 struct lu_object_header *h;
4373 o = &mo->mot_obj.mo_lu;
4374 h = &mo->mot_header;
4375 lu_object_header_init(h);
4376 lu_object_init(o, h, d);
4377 lu_object_add_top(h, o);
4378 o->lo_ops = &mdt_obj_ops;
4384 static int mdt_object_init(const struct lu_env *env, struct lu_object *o,
4385 const struct lu_object_conf *_)
4387 struct mdt_device *d = mdt_dev(o->lo_dev);
4388 struct lu_device *under;
4389 struct lu_object *below;
4393 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
4394 PFID(lu_object_fid(o)));
4396 under = &d->mdt_child->md_lu_dev;
4397 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
4398 if (below != NULL) {
4399 lu_object_add(o, below);
4406 static void mdt_object_free(const struct lu_env *env, struct lu_object *o)
4408 struct mdt_object *mo = mdt_obj(o);
4409 struct lu_object_header *h;
4413 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
4414 PFID(lu_object_fid(o)));
4417 lu_object_header_fini(h);
4422 static const struct lu_device_operations mdt_lu_ops = {
4423 .ldo_object_alloc = mdt_object_alloc,
4424 .ldo_process_config = mdt_process_config
4427 static const struct lu_object_operations mdt_obj_ops = {
4428 .loo_object_init = mdt_object_init,
4429 .loo_object_free = mdt_object_free
4432 /* mds_connect_internal */
4433 static int mdt_connect_internal(struct obd_export *exp,
4434 struct mdt_device *mdt,
4435 struct obd_connect_data *data)
4440 data->ocd_connect_flags &= MDT_CONNECT_SUPPORTED;
4441 data->ocd_ibits_known &= MDS_INODELOCK_FULL;
4443 /* If no known bits (which should not happen, probably,
4444 as everybody should support LOOKUP and UPDATE bits at least)
4445 revert to compat mode with plain locks. */
4446 if (!data->ocd_ibits_known &&
4447 data->ocd_connect_flags & OBD_CONNECT_IBITS)
4448 data->ocd_connect_flags &= ~OBD_CONNECT_IBITS;
4450 if (!mdt->mdt_opts.mo_acl)
4451 data->ocd_connect_flags &= ~OBD_CONNECT_ACL;
4453 if (!mdt->mdt_opts.mo_user_xattr)
4454 data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
4456 if (!mdt->mdt_opts.mo_mds_capa)
4457 data->ocd_connect_flags &= ~OBD_CONNECT_MDS_CAPA;
4459 if (!mdt->mdt_opts.mo_oss_capa)
4460 data->ocd_connect_flags &= ~OBD_CONNECT_OSS_CAPA;
4462 spin_lock(&exp->exp_lock);
4463 exp->exp_connect_flags = data->ocd_connect_flags;
4464 spin_unlock(&exp->exp_lock);
4465 data->ocd_version = LUSTRE_VERSION_CODE;
4466 exp->exp_mdt_data.med_ibits_known = data->ocd_ibits_known;
4470 if (mdt->mdt_opts.mo_acl &&
4471 ((exp->exp_connect_flags & OBD_CONNECT_ACL) == 0)) {
4472 CWARN("%s: MDS requires ACL support but client does not\n",
4473 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4478 flags = OBD_CONNECT_LCL_CLIENT | OBD_CONNECT_RMT_CLIENT;
4479 if ((exp->exp_connect_flags & flags) == flags) {
4480 CWARN("%s: both local and remote client flags are set\n",
4481 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4485 if (mdt->mdt_opts.mo_mds_capa &&
4486 ((exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) == 0)) {
4487 CWARN("%s: MDS requires capability support, but client not\n",
4488 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4492 if (mdt->mdt_opts.mo_oss_capa &&
4493 ((exp->exp_connect_flags & OBD_CONNECT_OSS_CAPA) == 0)) {
4494 CWARN("%s: MDS requires OSS capability support, "
4496 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4500 if ((exp->exp_connect_flags & OBD_CONNECT_FID) == 0) {
4501 CWARN("%s: MDS requires FID support, but client not\n",
4502 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name);
4509 /* mds_connect copy */
4510 static int mdt_obd_connect(const struct lu_env *env,
4511 struct lustre_handle *conn, struct obd_device *obd,
4512 struct obd_uuid *cluuid,
4513 struct obd_connect_data *data,
4516 struct mdt_thread_info *info;
4517 struct lsd_client_data *lcd;
4518 struct obd_export *exp;
4519 struct mdt_device *mdt;
4520 struct ptlrpc_request *req;
4524 LASSERT(env != NULL);
4525 if (!conn || !obd || !cluuid)
4528 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4529 req = info->mti_pill->rc_req;
4530 mdt = mdt_dev(obd->obd_lu_dev);
4532 rc = class_connect(conn, obd, cluuid);
4536 exp = class_conn2export(conn);
4537 LASSERT(exp != NULL);
4539 CDEBUG(D_SEC, "from %s\n", sptlrpc_part2name(req->rq_sp_from));
4541 spin_lock(&exp->exp_lock);
4542 exp->exp_sp_peer = req->rq_sp_from;
4544 read_lock(&mdt->mdt_sptlrpc_lock);
4545 sptlrpc_rule_set_choose(&mdt->mdt_sptlrpc_rset, exp->exp_sp_peer,
4546 req->rq_peer.nid, &exp->exp_flvr);
4547 read_unlock(&mdt->mdt_sptlrpc_lock);
4549 if (exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
4550 CERROR("invalid rpc flavor %x, expect %x, from %s\n",
4551 req->rq_flvr.sf_rpc, exp->exp_flvr.sf_rpc,
4552 libcfs_nid2str(req->rq_peer.nid));
4553 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_INVALID;
4554 spin_unlock(&exp->exp_lock);
4557 spin_unlock(&exp->exp_lock);
4559 rc = mdt_connect_internal(exp, mdt, data);
4563 struct mdt_thread_info *mti;
4564 mti = lu_context_key_get(&env->le_ctx,
4566 LASSERT(mti != NULL);
4568 memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
4569 exp->exp_mdt_data.med_lcd = lcd;
4570 rc = mdt_client_new(env, mdt);
4573 exp->exp_mdt_data.med_lcd = NULL;
4575 mdt_export_stats_init(obd, exp, localdata);
4582 class_disconnect(exp);
4584 class_export_put(exp);
4589 static int mdt_obd_reconnect(const struct lu_env *env,
4590 struct obd_export *exp, struct obd_device *obd,
4591 struct obd_uuid *cluuid,
4592 struct obd_connect_data *data,
4595 struct mdt_thread_info *info;
4596 struct mdt_device *mdt;
4597 struct ptlrpc_request *req;
4601 if (exp == NULL || obd == NULL || cluuid == NULL)
4604 info = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4605 req = info->mti_pill->rc_req;
4606 mdt = mdt_dev(obd->obd_lu_dev);
4608 CDEBUG(D_SEC, "from %s\n", sptlrpc_part2name(req->rq_sp_from));
4610 spin_lock(&exp->exp_lock);
4611 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
4612 exp->exp_sp_peer = req->rq_sp_from;
4614 read_lock(&mdt->mdt_sptlrpc_lock);
4615 sptlrpc_rule_set_choose(&mdt->mdt_sptlrpc_rset,
4617 req->rq_peer.nid, &exp->exp_flvr);
4618 read_unlock(&mdt->mdt_sptlrpc_lock);
4620 if (exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
4621 CERROR("invalid rpc flavor %x, expect %x, from %s\n",
4622 req->rq_flvr.sf_rpc, exp->exp_flvr.sf_rpc,
4623 libcfs_nid2str(req->rq_peer.nid));
4624 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_INVALID;
4625 spin_unlock(&exp->exp_lock);
4629 spin_unlock(&exp->exp_lock);
4631 rc = mdt_connect_internal(exp, mdt_dev(obd->obd_lu_dev), data);
4633 mdt_export_stats_init(obd, exp, localdata);
4638 static int mdt_obd_disconnect(struct obd_export *exp)
4640 struct mdt_device *mdt = mdt_dev(exp->exp_obd->obd_lu_dev);
4645 class_export_get(exp);
4647 /* Disconnect early so that clients can't keep using export */
4648 rc = class_disconnect(exp);
4649 if (mdt->mdt_namespace != NULL || exp->exp_obd->obd_namespace != NULL)
4650 ldlm_cancel_locks_for_export(exp);
4652 /* release nid stat refererence */
4653 lprocfs_exp_cleanup(exp);
4655 /* complete all outstanding replies */
4656 spin_lock(&exp->exp_lock);
4657 while (!list_empty(&exp->exp_outstanding_replies)) {
4658 struct ptlrpc_reply_state *rs =
4659 list_entry(exp->exp_outstanding_replies.next,
4660 struct ptlrpc_reply_state, rs_exp_list);
4661 struct ptlrpc_service *svc = rs->rs_service;
4663 spin_lock(&svc->srv_lock);
4664 list_del_init(&rs->rs_exp_list);
4665 ptlrpc_schedule_difficult_reply(rs);
4666 spin_unlock(&svc->srv_lock);
4668 spin_unlock(&exp->exp_lock);
4670 class_export_put(exp);
4674 /* FIXME: Can we avoid using these two interfaces? */
4675 static int mdt_init_export(struct obd_export *exp)
4677 struct mdt_export_data *med = &exp->exp_mdt_data;
4681 CFS_INIT_LIST_HEAD(&med->med_open_head);
4682 spin_lock_init(&med->med_open_lock);
4683 sema_init(&med->med_idmap_sem, 1);
4684 med->med_idmap = NULL;
4685 spin_lock(&exp->exp_lock);
4686 exp->exp_connecting = 1;
4687 spin_unlock(&exp->exp_lock);
4688 rc = ldlm_init_export(exp);
4690 CERROR("Error %d while initializing export\n", rc);
4694 static int mdt_destroy_export(struct obd_export *export)
4696 struct mdt_export_data *med;
4697 struct obd_device *obd = export->exp_obd;
4698 struct mdt_device *mdt;
4699 struct mdt_thread_info *info;
4704 CFS_LIST_HEAD(closing_list);
4705 struct mdt_file_data *mfd, *n;
4709 med = &export->exp_mdt_data;
4710 if (med->med_rmtclient)
4711 mdt_cleanup_idmap(med);
4713 target_destroy_export(export);
4714 ldlm_destroy_export(export);
4716 if (obd_uuid_equals(&export->exp_client_uuid, &obd->obd_uuid))
4719 mdt = mdt_dev(obd->obd_lu_dev);
4720 LASSERT(mdt != NULL);
4722 rc = lu_env_init(&env, LCT_MD_THREAD);
4726 info = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
4727 LASSERT(info != NULL);
4728 memset(info, 0, sizeof *info);
4729 info->mti_env = &env;
4730 info->mti_mdt = mdt;
4731 info->mti_exp = export;
4733 ma = &info->mti_attr;
4734 lmm_size = ma->ma_lmm_size = mdt->mdt_max_mdsize;
4735 cookie_size = ma->ma_cookie_size = mdt->mdt_max_cookiesize;
4736 OBD_ALLOC(ma->ma_lmm, lmm_size);
4737 OBD_ALLOC(ma->ma_cookie, cookie_size);
4739 if (ma->ma_lmm == NULL || ma->ma_cookie == NULL)
4740 GOTO(out, rc = -ENOMEM);
4741 ma->ma_need = MA_LOV | MA_COOKIE;
4743 /* Close any open files (which may also cause orphan unlinking). */
4744 spin_lock(&med->med_open_lock);
4745 while (!list_empty(&med->med_open_head)) {
4746 struct list_head *tmp = med->med_open_head.next;
4747 mfd = list_entry(tmp, struct mdt_file_data, mfd_list);
4749 /* Remove mfd handle so it can't be found again.
4750 * We are consuming the mfd_list reference here. */
4751 class_handle_unhash(&mfd->mfd_handle);
4752 list_move_tail(&mfd->mfd_list, &closing_list);
4754 spin_unlock(&med->med_open_lock);
4756 list_for_each_entry_safe(mfd, n, &closing_list, mfd_list) {
4757 list_del_init(&mfd->mfd_list);
4758 mdt_mfd_close(info, mfd);
4759 /* TODO: if we close the unlinked file,
4760 * we need to remove its objects from OST */
4761 memset(&ma->ma_attr, 0, sizeof(ma->ma_attr));
4762 spin_lock(&med->med_open_lock);
4763 ma->ma_lmm_size = lmm_size;
4764 ma->ma_cookie_size = cookie_size;
4765 ma->ma_need = MA_LOV | MA_COOKIE;
4767 spin_unlock(&med->med_open_lock);
4770 info->mti_mdt = NULL;
4771 mdt_client_del(&env, mdt);
4776 OBD_FREE(ma->ma_lmm, lmm_size);
4780 OBD_FREE(ma->ma_cookie, cookie_size);
4781 ma->ma_cookie = NULL;
4788 static void mdt_allow_cli(struct mdt_device *m, unsigned int flag)
4790 if (flag & CONFIG_LOG)
4791 m->mdt_fl_cfglog = 1;
4792 if (flag & CONFIG_SYNC)
4793 m->mdt_fl_synced = 1;
4795 if (m->mdt_fl_cfglog /* bz11778: && m->mdt_fl_synced */)
4796 /* Open for clients */
4797 m->mdt_md_dev.md_lu_dev.ld_obd->obd_no_conn = 0;
4800 static int mdt_upcall(const struct lu_env *env, struct md_device *md,
4801 enum md_upcall_event ev)
4803 struct mdt_device *m = mdt_dev(&md->md_lu_dev);
4804 struct md_device *next = m->mdt_child;
4805 struct mdt_thread_info *mti;
4811 rc = next->md_ops->mdo_maxsize_get(env, next,
4813 &m->mdt_max_cookiesize);
4814 CDEBUG(D_INFO, "get max mdsize %d max cookiesize %d\n",
4815 m->mdt_max_mdsize, m->mdt_max_cookiesize);
4816 mdt_allow_cli(m, CONFIG_SYNC);
4819 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
4820 mti->mti_no_need_trans = 1;
4821 CDEBUG(D_INFO, "disable mdt trans for this thread\n");
4824 /* Check that MDT is not yet configured */
4825 LASSERT(!m->mdt_fl_cfglog);
4828 CERROR("invalid event\n");
4835 static int mdt_obd_notify(struct obd_device *host,
4836 struct obd_device *watched,
4837 enum obd_notify_event ev, void *data)
4842 case OBD_NOTIFY_CONFIG:
4843 mdt_allow_cli(mdt_dev(host->obd_lu_dev), (unsigned long)data);
4846 CDEBUG(D_INFO, "Unhandled notification %#x\n", ev);
4851 static int mdt_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
4852 void *karg, void *uarg)
4855 struct obd_device *obd= exp->exp_obd;
4856 struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
4857 struct dt_device *dt = mdt->mdt_bottom;
4861 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
4862 rc = lu_env_init(&env, LCT_MD_THREAD);
4868 rc = mdt_device_sync(&env, mdt);
4870 case OBD_IOC_SET_READONLY:
4871 dt->dd_ops->dt_ro(&env, dt);
4873 case OBD_IOC_ABORT_RECOVERY:
4874 CERROR("Aborting recovery for device %s\n", obd->obd_name);
4875 target_stop_recovery_thread(obd);
4879 CERROR("Not supported cmd = %d for device %s\n",
4880 cmd, obd->obd_name);
4888 int mdt_postrecov(const struct lu_env *env, struct mdt_device *mdt)
4890 struct lu_device *ld = md2lu_dev(mdt->mdt_child);
4891 struct obd_device *obd = mdt->mdt_md_dev.md_lu_dev.ld_obd;
4894 /* if some clients didn't participate in recovery then we can possibly
4895 * lost sequence. Now we should increase sequence for safe value */
4896 lost = obd->obd_max_recoverable_clients - obd->obd_connected_clients;
4897 mdt_seq_adjust(env, mdt, lost);
4899 rc = ld->ld_ops->ldo_recovery_complete(env, ld);
4903 int mdt_obd_postrecov(struct obd_device *obd)
4908 rc = lu_env_init(&env, LCT_MD_THREAD);
4911 rc = mdt_postrecov(&env, mdt_dev(obd->obd_lu_dev));
4916 static struct obd_ops mdt_obd_device_ops = {
4917 .o_owner = THIS_MODULE,
4918 .o_connect = mdt_obd_connect,
4919 .o_reconnect = mdt_obd_reconnect,
4920 .o_disconnect = mdt_obd_disconnect,
4921 .o_init_export = mdt_init_export,
4922 .o_destroy_export = mdt_destroy_export,
4923 .o_iocontrol = mdt_iocontrol,
4924 .o_postrecov = mdt_obd_postrecov,
4925 .o_notify = mdt_obd_notify
4928 static struct lu_device* mdt_device_fini(const struct lu_env *env,
4929 struct lu_device *d)
4931 struct mdt_device *m = mdt_dev(d);
4938 static struct lu_device *mdt_device_free(const struct lu_env *env,
4939 struct lu_device *d)
4941 struct mdt_device *m = mdt_dev(d);
4944 md_device_fini(&m->mdt_md_dev);
4949 static struct lu_device *mdt_device_alloc(const struct lu_env *env,
4950 struct lu_device_type *t,
4951 struct lustre_cfg *cfg)
4953 struct lu_device *l;
4954 struct mdt_device *m;
4960 l = &m->mdt_md_dev.md_lu_dev;
4961 rc = mdt_init0(env, m, t, cfg);
4963 mdt_device_free(env, l);
4967 md_upcall_init(&m->mdt_md_dev, mdt_upcall);
4969 l = ERR_PTR(-ENOMEM);
4973 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
4974 LU_KEY_INIT_FINI(mdt, struct mdt_thread_info);
4976 /* context key: mdt_thread_key */
4977 LU_CONTEXT_KEY_DEFINE(mdt, LCT_MD_THREAD);
4979 /* context key constructor/destructor: mdt_txn_key_init, mdt_txn_key_fini */
4980 LU_KEY_INIT_FINI(mdt_txn, struct mdt_txn_info);
4982 struct lu_context_key mdt_txn_key = {
4983 .lct_tags = LCT_TX_HANDLE,
4984 .lct_init = mdt_txn_key_init,
4985 .lct_fini = mdt_txn_key_fini
4988 struct md_ucred *mdt_ucred(const struct mdt_thread_info *info)
4990 return md_ucred(info->mti_env);
4994 * Enable/disable COS.
4996 * Set/Clear the COS flag in mdt options.
4998 * \param mdt mdt device
4999 * \param val 0 disables COS, other values enable COS
5001 void mdt_enable_cos(struct mdt_device *mdt, int val)
5006 mdt->mdt_opts.mo_cos = !!val;
5007 rc = lu_env_init(&env, LCT_MD_THREAD);
5008 if (unlikely(rc != 0)) {
5009 CWARN("lu_env initialization failed with rc = %d,"
5010 "cannot sync\n", rc);
5013 mdt_device_sync(&env, mdt);
5020 * Return COS flag status/
5022 * \param mdt mdt device
5024 int mdt_cos_is_enabled(struct mdt_device *mdt)
5026 return mdt->mdt_opts.mo_cos != 0;
5029 /* type constructor/destructor: mdt_type_init, mdt_type_fini */
5030 LU_TYPE_INIT_FINI(mdt, &mdt_thread_key, &mdt_txn_key);
5032 static struct lu_device_type_operations mdt_device_type_ops = {
5033 .ldto_init = mdt_type_init,
5034 .ldto_fini = mdt_type_fini,
5036 .ldto_start = mdt_type_start,
5037 .ldto_stop = mdt_type_stop,
5039 .ldto_device_alloc = mdt_device_alloc,
5040 .ldto_device_free = mdt_device_free,
5041 .ldto_device_fini = mdt_device_fini
5044 static struct lu_device_type mdt_device_type = {
5045 .ldt_tags = LU_DEVICE_MD,
5046 .ldt_name = LUSTRE_MDT_NAME,
5047 .ldt_ops = &mdt_device_type_ops,
5048 .ldt_ctx_tags = LCT_MD_THREAD
5051 static int __init mdt_mod_init(void)
5053 struct lprocfs_static_vars lvars;
5056 mdt_num_threads = MDT_NUM_THREADS;
5057 lprocfs_mdt_init_vars(&lvars);
5058 rc = class_register_type(&mdt_obd_device_ops, NULL,
5059 lvars.module_vars, LUSTRE_MDT_NAME,
5065 static void __exit mdt_mod_exit(void)
5067 class_unregister_type(LUSTRE_MDT_NAME);
5071 #define DEF_HNDL(prefix, base, suffix, flags, opc, fn, fmt) \
5072 [prefix ## _ ## opc - prefix ## _ ## base] = { \
5074 .mh_fail_id = OBD_FAIL_ ## prefix ## _ ## opc ## suffix, \
5075 .mh_opc = prefix ## _ ## opc, \
5076 .mh_flags = flags, \
5081 #define DEF_MDT_HNDL(flags, name, fn, fmt) \
5082 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, fmt)
5084 #define DEF_SEQ_HNDL(flags, name, fn, fmt) \
5085 DEF_HNDL(SEQ, QUERY, _NET, flags, name, fn, fmt)
5087 #define DEF_FLD_HNDL(flags, name, fn, fmt) \
5088 DEF_HNDL(FLD, QUERY, _NET, flags, name, fn, fmt)
5090 * Request with a format known in advance
5092 #define DEF_MDT_HNDL_F(flags, name, fn) \
5093 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, &RQF_MDS_ ## name)
5095 #define DEF_SEQ_HNDL_F(flags, name, fn) \
5096 DEF_HNDL(SEQ, QUERY, _NET, flags, name, fn, &RQF_SEQ_ ## name)
5098 #define DEF_FLD_HNDL_F(flags, name, fn) \
5099 DEF_HNDL(FLD, QUERY, _NET, flags, name, fn, &RQF_FLD_ ## name)
5101 * Request with a format we do not yet know
5103 #define DEF_MDT_HNDL_0(flags, name, fn) \
5104 DEF_HNDL(MDS, GETATTR, _NET, flags, name, fn, NULL)
5106 static struct mdt_handler mdt_mds_ops[] = {
5107 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
5108 DEF_MDT_HNDL_F(0, DISCONNECT, mdt_disconnect),
5109 DEF_MDT_HNDL_F(0, SET_INFO, mdt_set_info),
5110 DEF_MDT_HNDL_F(0 |HABEO_REFERO, GETSTATUS, mdt_getstatus),
5111 DEF_MDT_HNDL_F(HABEO_CORPUS, GETATTR, mdt_getattr),
5112 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, GETATTR_NAME, mdt_getattr_name),
5113 DEF_MDT_HNDL_F(HABEO_CORPUS, GETXATTR, mdt_getxattr),
5114 DEF_MDT_HNDL_F(0 |HABEO_REFERO, STATFS, mdt_statfs),
5115 DEF_MDT_HNDL_F(0 |MUTABOR, REINT, mdt_reint),
5116 DEF_MDT_HNDL_F(HABEO_CORPUS, CLOSE, mdt_close),
5117 DEF_MDT_HNDL_F(HABEO_CORPUS, DONE_WRITING, mdt_done_writing),
5118 DEF_MDT_HNDL_F(0 |HABEO_REFERO, PIN, mdt_pin),
5119 DEF_MDT_HNDL_0(0, SYNC, mdt_sync),
5120 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, IS_SUBDIR, mdt_is_subdir),
5121 DEF_MDT_HNDL_F(0, QUOTACHECK, mdt_quotacheck_handle),
5122 DEF_MDT_HNDL_F(0, QUOTACTL, mdt_quotactl_handle)
5125 #define DEF_OBD_HNDL(flags, name, fn) \
5126 DEF_HNDL(OBD, PING, _NET, flags, name, fn, NULL)
5129 static struct mdt_handler mdt_obd_ops[] = {
5130 DEF_OBD_HNDL(0, PING, mdt_obd_ping),
5131 DEF_OBD_HNDL(0, LOG_CANCEL, mdt_obd_log_cancel),
5132 DEF_OBD_HNDL(0, QC_CALLBACK, mdt_obd_qc_callback)
5135 #define DEF_DLM_HNDL_0(flags, name, fn) \
5136 DEF_HNDL(LDLM, ENQUEUE, , flags, name, fn, NULL)
5137 #define DEF_DLM_HNDL_F(flags, name, fn) \
5138 DEF_HNDL(LDLM, ENQUEUE, , flags, name, fn, &RQF_LDLM_ ## name)
5140 static struct mdt_handler mdt_dlm_ops[] = {
5141 DEF_DLM_HNDL_F(HABEO_CLAVIS, ENQUEUE, mdt_enqueue),
5142 DEF_DLM_HNDL_0(HABEO_CLAVIS, CONVERT, mdt_convert),
5143 DEF_DLM_HNDL_0(0, BL_CALLBACK, mdt_bl_callback),
5144 DEF_DLM_HNDL_0(0, CP_CALLBACK, mdt_cp_callback)
5147 static struct mdt_handler mdt_llog_ops[] = {
5150 #define DEF_SEC_CTX_HNDL(name, fn) \
5151 DEF_HNDL(SEC_CTX, INIT, _NET, 0, name, fn, NULL)
5153 static struct mdt_handler mdt_sec_ctx_ops[] = {
5154 DEF_SEC_CTX_HNDL(INIT, mdt_sec_ctx_handle),
5155 DEF_SEC_CTX_HNDL(INIT_CONT, mdt_sec_ctx_handle),
5156 DEF_SEC_CTX_HNDL(FINI, mdt_sec_ctx_handle)
5159 static struct mdt_opc_slice mdt_regular_handlers[] = {
5161 .mos_opc_start = MDS_GETATTR,
5162 .mos_opc_end = MDS_LAST_OPC,
5163 .mos_hs = mdt_mds_ops
5166 .mos_opc_start = OBD_PING,
5167 .mos_opc_end = OBD_LAST_OPC,
5168 .mos_hs = mdt_obd_ops
5171 .mos_opc_start = LDLM_ENQUEUE,
5172 .mos_opc_end = LDLM_LAST_OPC,
5173 .mos_hs = mdt_dlm_ops
5176 .mos_opc_start = LLOG_ORIGIN_HANDLE_CREATE,
5177 .mos_opc_end = LLOG_LAST_OPC,
5178 .mos_hs = mdt_llog_ops
5181 .mos_opc_start = SEC_CTX_INIT,
5182 .mos_opc_end = SEC_LAST_OPC,
5183 .mos_hs = mdt_sec_ctx_ops
5190 static struct mdt_handler mdt_readpage_ops[] = {
5191 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
5192 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, READPAGE, mdt_readpage),
5193 #ifdef HAVE_SPLIT_SUPPORT
5194 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, WRITEPAGE, mdt_writepage),
5198 * XXX: this is ugly and should be fixed one day, see mdc_close() for
5199 * detailed comments. --umka
5201 DEF_MDT_HNDL_F(HABEO_CORPUS, CLOSE, mdt_close),
5202 DEF_MDT_HNDL_F(HABEO_CORPUS, DONE_WRITING, mdt_done_writing),
5205 static struct mdt_opc_slice mdt_readpage_handlers[] = {
5207 .mos_opc_start = MDS_GETATTR,
5208 .mos_opc_end = MDS_LAST_OPC,
5209 .mos_hs = mdt_readpage_ops
5216 static struct mdt_handler mdt_xmds_ops[] = {
5217 DEF_MDT_HNDL_F(0, CONNECT, mdt_connect),
5218 DEF_MDT_HNDL_F(HABEO_CORPUS , GETATTR, mdt_getattr),
5219 DEF_MDT_HNDL_F(0 | MUTABOR , REINT, mdt_reint),
5220 DEF_MDT_HNDL_F(HABEO_CORPUS|HABEO_REFERO, IS_SUBDIR, mdt_is_subdir),
5223 static struct mdt_opc_slice mdt_xmds_handlers[] = {
5225 .mos_opc_start = MDS_GETATTR,
5226 .mos_opc_end = MDS_LAST_OPC,
5227 .mos_hs = mdt_xmds_ops
5230 .mos_opc_start = OBD_PING,
5231 .mos_opc_end = OBD_LAST_OPC,
5232 .mos_hs = mdt_obd_ops
5235 .mos_opc_start = SEC_CTX_INIT,
5236 .mos_opc_end = SEC_LAST_OPC,
5237 .mos_hs = mdt_sec_ctx_ops
5244 static struct mdt_handler mdt_seq_ops[] = {
5245 DEF_SEQ_HNDL_F(0, QUERY, (int (*)(struct mdt_thread_info *))seq_query)
5248 static struct mdt_opc_slice mdt_seq_handlers[] = {
5250 .mos_opc_start = SEQ_QUERY,
5251 .mos_opc_end = SEQ_LAST_OPC,
5252 .mos_hs = mdt_seq_ops
5259 static struct mdt_handler mdt_fld_ops[] = {
5260 DEF_FLD_HNDL_F(0, QUERY, (int (*)(struct mdt_thread_info *))fld_query)
5263 static struct mdt_opc_slice mdt_fld_handlers[] = {
5265 .mos_opc_start = FLD_QUERY,
5266 .mos_opc_end = FLD_LAST_OPC,
5267 .mos_hs = mdt_fld_ops
5274 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
5275 MODULE_DESCRIPTION("Lustre Meta-data Target ("LUSTRE_MDT_NAME")");
5276 MODULE_LICENSE("GPL");
5278 CFS_MODULE_PARM(mdt_num_threads, "ul", ulong, 0444,
5279 "number of mdt service threads to start");
5281 cfs_module(mdt, "0.2.0", mdt_mod_init, mdt_mod_exit);