4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2016, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #define DEBUG_SUBSYSTEM S_MDC
35 #include <linux/init.h>
36 #include <linux/kthread.h>
37 #include <linux/miscdevice.h>
38 #include <linux/module.h>
39 #include <linux/pagemap.h>
40 #include <linux/user_namespace.h>
41 #include <linux/utsname.h>
42 #ifdef HAVE_UIDGID_HEADER
43 # include <linux/uidgid.h>
46 #include <lustre/lustre_errno.h>
48 #include <cl_object.h>
49 #include <llog_swab.h>
50 #include <lprocfs_status.h>
51 #include <lustre_acl.h>
52 #include <lustre_fid.h>
53 #include <lustre_ioctl.h>
54 #include <lustre_kernelcomm.h>
55 #include <lustre_lmv.h>
56 #include <lustre_log.h>
57 #include <lustre_param.h>
58 #include <lustre_swab.h>
59 #include <obd_class.h>
61 #include "mdc_internal.h"
63 #define REQUEST_MINOR 244
65 static int mdc_cleanup(struct obd_device *obd);
67 static inline int mdc_queue_wait(struct ptlrpc_request *req)
69 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
72 /* obd_get_request_slot() ensures that this client has no more
73 * than cl_max_rpcs_in_flight RPCs simultaneously inf light
75 rc = obd_get_request_slot(cli);
79 rc = ptlrpc_queue_wait(req);
80 obd_put_request_slot(cli);
86 * Send MDS_GET_ROOT RPC to fetch root FID.
88 * If \a fileset is not NULL it should contain a subdirectory off
89 * the ROOT/ directory to be mounted on the client. Return the FID
90 * of the subdirectory to the client to mount onto its mountpoint.
92 * \param[in] imp MDC import
93 * \param[in] fileset fileset name, which could be NULL
94 * \param[out] rootfid root FID of this mountpoint
95 * \param[out] pc root capa will be unpacked and saved in this pointer
97 * \retval 0 on success, negative errno on failure
99 static int mdc_get_root(struct obd_export *exp, const char *fileset,
100 struct lu_fid *rootfid)
102 struct ptlrpc_request *req;
103 struct mdt_body *body;
108 if (fileset && !(exp_connect_flags(exp) & OBD_CONNECT_SUBTREE))
111 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
117 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
118 strlen(fileset) + 1);
119 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_ROOT);
121 ptlrpc_request_free(req);
124 mdc_pack_body(req, NULL, 0, 0, -1, 0);
125 if (fileset != NULL) {
126 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
128 memcpy(name, fileset, strlen(fileset));
130 lustre_msg_add_flags(req->rq_reqmsg, LUSTRE_IMP_FULL);
131 req->rq_send_state = LUSTRE_IMP_FULL;
133 ptlrpc_request_set_replen(req);
135 rc = ptlrpc_queue_wait(req);
139 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
141 GOTO(out, rc = -EPROTO);
143 *rootfid = body->mbo_fid1;
144 CDEBUG(D_NET, "root fid="DFID", last_committed=%llu\n",
145 PFID(rootfid), lustre_msg_get_last_committed(req->rq_repmsg));
148 ptlrpc_req_finished(req);
154 * This function now is known to always saying that it will receive 4 buffers
155 * from server. Even for cases when acl_size and md_size is zero, RPC header
156 * will contain 4 fields and RPC itself will contain zero size fields. This is
157 * because mdt_getattr*() _always_ returns 4 fields, but if acl is not needed
158 * and thus zero, it shrinks it, making zero size. The same story about
159 * md_size. And this is course of problem when client waits for smaller number
160 * of fields. This issue will be fixed later when client gets aware of RPC
163 static int mdc_getattr_common(struct obd_export *exp,
164 struct ptlrpc_request *req)
166 struct req_capsule *pill = &req->rq_pill;
167 struct mdt_body *body;
172 /* Request message already built. */
173 rc = ptlrpc_queue_wait(req);
177 /* sanity check for the reply */
178 body = req_capsule_server_get(pill, &RMF_MDT_BODY);
182 CDEBUG(D_NET, "mode: %o\n", body->mbo_mode);
184 mdc_update_max_ea_from_body(exp, body);
185 if (body->mbo_eadatasize != 0) {
186 eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
187 body->mbo_eadatasize);
195 static int mdc_getattr(struct obd_export *exp, struct md_op_data *op_data,
196 struct ptlrpc_request **request)
198 struct ptlrpc_request *req;
202 /* Single MDS without an LMV case */
203 if (op_data->op_flags & MF_GET_MDT_IDX) {
208 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
212 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
214 ptlrpc_request_free(req);
218 mdc_pack_body(req, &op_data->op_fid1, op_data->op_valid,
219 op_data->op_mode, -1, 0);
221 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
223 ptlrpc_request_set_replen(req);
225 rc = mdc_getattr_common(exp, req);
227 ptlrpc_req_finished(req);
233 static int mdc_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
234 struct ptlrpc_request **request)
236 struct ptlrpc_request *req;
241 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
242 &RQF_MDS_GETATTR_NAME);
246 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
247 op_data->op_namelen + 1);
249 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME);
251 ptlrpc_request_free(req);
255 mdc_pack_body(req, &op_data->op_fid1, op_data->op_valid,
256 op_data->op_mode, op_data->op_suppgids[0], 0);
258 if (op_data->op_name) {
259 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
260 LASSERT(strnlen(op_data->op_name, op_data->op_namelen) ==
261 op_data->op_namelen);
262 memcpy(name, op_data->op_name, op_data->op_namelen);
265 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
267 ptlrpc_request_set_replen(req);
269 rc = mdc_getattr_common(exp, req);
271 ptlrpc_req_finished(req);
277 static int mdc_xattr_common(struct obd_export *exp,const struct req_format *fmt,
278 const struct lu_fid *fid, int opcode, u64 valid,
279 const char *xattr_name, const char *input,
280 int input_size, int output_size, int flags,
281 __u32 suppgid, struct ptlrpc_request **request)
283 struct ptlrpc_request *req;
284 int xattr_namelen = 0;
290 req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
295 xattr_namelen = strlen(xattr_name) + 1;
296 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
301 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
305 /* Flush local XATTR locks to get rid of a possible cancel RPC */
306 if (opcode == MDS_REINT && fid_is_sane(fid) &&
307 exp->exp_connect_data.ocd_ibits_known & MDS_INODELOCK_XATTR) {
308 struct list_head cancels = LIST_HEAD_INIT(cancels);
311 /* Without that packing would fail */
313 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
316 count = mdc_resource_get_unused(exp, fid,
318 MDS_INODELOCK_XATTR);
320 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
322 ptlrpc_request_free(req);
326 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
328 ptlrpc_request_free(req);
333 if (opcode == MDS_REINT) {
334 struct mdt_rec_setxattr *rec;
336 CLASSERT(sizeof(struct mdt_rec_setxattr) ==
337 sizeof(struct mdt_rec_reint));
338 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
339 rec->sx_opcode = REINT_SETXATTR;
340 rec->sx_fsuid = from_kuid(&init_user_ns, current_fsuid());
341 rec->sx_fsgid = from_kgid(&init_user_ns, current_fsgid());
342 rec->sx_cap = cfs_curproc_cap_pack();
343 rec->sx_suppgid1 = suppgid;
344 rec->sx_suppgid2 = -1;
346 rec->sx_valid = valid | OBD_MD_FLCTIME;
347 rec->sx_time = ktime_get_real_seconds();
348 rec->sx_size = output_size;
349 rec->sx_flags = flags;
351 mdc_pack_body(req, fid, valid, output_size, suppgid, flags);
355 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
356 memcpy(tmp, xattr_name, xattr_namelen);
359 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
360 memcpy(tmp, input, input_size);
363 if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
364 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
365 RCL_SERVER, output_size);
366 ptlrpc_request_set_replen(req);
369 if (opcode == MDS_REINT)
370 mdc_get_mod_rpc_slot(req, NULL);
372 rc = ptlrpc_queue_wait(req);
374 if (opcode == MDS_REINT)
375 mdc_put_mod_rpc_slot(req, NULL);
377 /* For XATTR_LUSTRE_LOV.add, we'd save the LOVEA for replay. */
378 if (opcode == MDS_REINT && rc == 0) {
379 struct mdt_body *body;
380 struct req_capsule *pill = &req->rq_pill;
382 body = req_capsule_server_get(pill, &RMF_MDT_BODY);
384 GOTO(out, rc = -EPROTO);
386 if (body->mbo_valid & OBD_MD_FLEASIZE) {
389 eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
390 body->mbo_eadatasize);
392 GOTO(out, rc = -EPROTO);
394 rc = mdc_save_lovea(req, &RMF_EADATA, eadata,
395 body->mbo_eadatasize);
402 ptlrpc_req_finished(req);
408 static int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
409 u64 valid, const char *xattr_name,
410 const char *input, int input_size, int output_size,
411 int flags, __u32 suppgid,
412 struct ptlrpc_request **request)
414 return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
415 fid, MDS_REINT, valid, xattr_name,
416 input, input_size, output_size, flags,
420 static int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
421 u64 valid, const char *xattr_name,
422 const char *input, int input_size, int output_size,
423 int flags, struct ptlrpc_request **request)
425 return mdc_xattr_common(exp, &RQF_MDS_GETXATTR,
426 fid, MDS_GETXATTR, valid, xattr_name,
427 input, input_size, output_size, flags,
431 #ifdef CONFIG_FS_POSIX_ACL
432 static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
434 struct req_capsule *pill = &req->rq_pill;
435 struct mdt_body *body = md->body;
436 struct posix_acl *acl;
441 if (!body->mbo_aclsize)
444 buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->mbo_aclsize);
449 acl = posix_acl_from_xattr(&init_user_ns, buf, body->mbo_aclsize);
454 CERROR("convert xattr to acl: %d\n", rc);
458 rc = posix_acl_valid(&init_user_ns, acl);
460 CERROR("validate acl: %d\n", rc);
461 posix_acl_release(acl);
469 #define mdc_unpack_acl(req, md) 0
472 int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
473 struct obd_export *dt_exp, struct obd_export *md_exp,
474 struct lustre_md *md)
476 struct req_capsule *pill = &req->rq_pill;
481 memset(md, 0, sizeof(*md));
483 md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
484 LASSERT(md->body != NULL);
486 if (md->body->mbo_valid & OBD_MD_FLEASIZE) {
487 if (!S_ISREG(md->body->mbo_mode)) {
488 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
489 "regular file, but is not\n");
490 GOTO(out, rc = -EPROTO);
493 if (md->body->mbo_eadatasize == 0) {
494 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
495 "but eadatasize 0\n");
496 GOTO(out, rc = -EPROTO);
499 md->layout.lb_len = md->body->mbo_eadatasize;
500 md->layout.lb_buf = req_capsule_server_sized_get(pill,
503 if (md->layout.lb_buf == NULL)
504 GOTO(out, rc = -EPROTO);
505 } else if (md->body->mbo_valid & OBD_MD_FLDIREA) {
506 const union lmv_mds_md *lmv;
509 if (!S_ISDIR(md->body->mbo_mode)) {
510 CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
511 "directory, but is not\n");
512 GOTO(out, rc = -EPROTO);
515 lmv_size = md->body->mbo_eadatasize;
517 CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
518 "but eadatasize 0\n");
522 if (md->body->mbo_valid & OBD_MD_MEA) {
523 lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
526 GOTO(out, rc = -EPROTO);
528 rc = md_unpackmd(md_exp, &md->lmv, lmv, lmv_size);
532 if (rc < (typeof(rc))sizeof(*md->lmv)) {
533 CDEBUG(D_INFO, "size too small: "
534 "rc < sizeof(*md->lmv) (%d < %d)\n",
535 rc, (int)sizeof(*md->lmv));
536 GOTO(out, rc = -EPROTO);
542 if (md->body->mbo_valid & OBD_MD_FLACL) {
543 /* for ACL, it's possible that FLACL is set but aclsize is zero.
544 * only when aclsize != 0 there's an actual segment for ACL
547 if (md->body->mbo_aclsize) {
548 rc = mdc_unpack_acl(req, md);
551 #ifdef CONFIG_FS_POSIX_ACL
553 md->posix_acl = NULL;
561 #ifdef CONFIG_FS_POSIX_ACL
562 posix_acl_release(md->posix_acl);
568 int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
574 void mdc_replay_open(struct ptlrpc_request *req)
576 struct md_open_data *mod = req->rq_cb_data;
577 struct ptlrpc_request *close_req;
578 struct obd_client_handle *och;
579 struct lustre_handle old;
580 struct mdt_body *body;
584 DEBUG_REQ(D_ERROR, req,
585 "Can't properly replay without open data.");
590 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
591 LASSERT(body != NULL);
595 struct lustre_handle *file_fh;
597 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
599 file_fh = &och->och_fh;
600 CDEBUG(D_HA, "updating handle from %#llx to %#llx\n",
601 file_fh->cookie, body->mbo_handle.cookie);
603 *file_fh = body->mbo_handle;
605 close_req = mod->mod_close_req;
606 if (close_req != NULL) {
607 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
608 struct mdt_ioepoch *epoch;
610 LASSERT(opc == MDS_CLOSE);
611 epoch = req_capsule_client_get(&close_req->rq_pill,
616 LASSERT(!memcmp(&old, &epoch->mio_handle, sizeof(old)));
618 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
619 epoch->mio_handle = body->mbo_handle;
624 void mdc_commit_open(struct ptlrpc_request *req)
626 struct md_open_data *mod = req->rq_cb_data;
631 * No need to touch md_open_data::mod_och, it holds a reference on
632 * \var mod and will zero references to each other, \var mod will be
633 * freed after that when md_open_data::mod_och will put the reference.
637 * Do not let open request to disappear as it still may be needed
638 * for close rpc to happen (it may happen on evict only, otherwise
639 * ptlrpc_request::rq_replay does not let mdc_commit_open() to be
640 * called), just mark this rpc as committed to distinguish these 2
641 * cases, see mdc_close() for details. The open request reference will
642 * be put along with freeing \var mod.
644 ptlrpc_request_addref(req);
645 spin_lock(&req->rq_lock);
646 req->rq_committed = 1;
647 spin_unlock(&req->rq_lock);
648 req->rq_cb_data = NULL;
652 int mdc_set_open_replay_data(struct obd_export *exp,
653 struct obd_client_handle *och,
654 struct lookup_intent *it)
656 struct md_open_data *mod;
657 struct mdt_rec_create *rec;
658 struct mdt_body *body;
659 struct ptlrpc_request *open_req = it->it_request;
660 struct obd_import *imp = open_req->rq_import;
663 if (!open_req->rq_replay)
666 rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
667 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
668 LASSERT(rec != NULL);
669 /* Incoming message in my byte order (it's been swabbed). */
670 /* Outgoing messages always in my byte order. */
671 LASSERT(body != NULL);
673 /* Only if the import is replayable, we set replay_open data */
674 if (och && imp->imp_replayable) {
675 mod = obd_mod_alloc();
677 DEBUG_REQ(D_ERROR, open_req,
678 "Can't allocate md_open_data");
683 * Take a reference on \var mod, to be freed on mdc_close().
684 * It protects \var mod from being freed on eviction (commit
685 * callback is called despite rq_replay flag).
686 * Another reference for \var och.
691 spin_lock(&open_req->rq_lock);
694 mod->mod_is_create = it_disposition(it, DISP_OPEN_CREATE) ||
695 it_disposition(it, DISP_OPEN_STRIPE);
696 mod->mod_open_req = open_req;
697 open_req->rq_cb_data = mod;
698 open_req->rq_commit_cb = mdc_commit_open;
699 spin_unlock(&open_req->rq_lock);
702 rec->cr_fid2 = body->mbo_fid1;
703 rec->cr_ioepoch = body->mbo_ioepoch;
704 rec->cr_old_handle.cookie = body->mbo_handle.cookie;
705 open_req->rq_replay_cb = mdc_replay_open;
706 if (!fid_is_sane(&body->mbo_fid1)) {
707 DEBUG_REQ(D_ERROR, open_req, "Saving replay request with "
712 DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
716 static void mdc_free_open(struct md_open_data *mod)
720 if (mod->mod_is_create == 0 &&
721 imp_connect_disp_stripe(mod->mod_open_req->rq_import))
725 * No reason to asssert here if the open request has
726 * rq_replay == 1. It means that mdc_close failed, and
727 * close request wasn`t sent. It is not fatal to client.
728 * The worst thing is eviction if the client gets open lock
731 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req, "free open request rq_replay"
732 "= %d\n", mod->mod_open_req->rq_replay);
734 ptlrpc_request_committed(mod->mod_open_req, committed);
735 if (mod->mod_close_req)
736 ptlrpc_request_committed(mod->mod_close_req, committed);
739 int mdc_clear_open_replay_data(struct obd_export *exp,
740 struct obd_client_handle *och)
742 struct md_open_data *mod = och->och_mod;
746 * It is possible to not have \var mod in a case of eviction between
747 * lookup and ll_file_open().
752 LASSERT(mod != LP_POISON);
753 LASSERT(mod->mod_open_req != NULL);
763 static int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
764 struct md_open_data *mod, struct ptlrpc_request **request)
766 struct obd_device *obd = class_exp2obd(exp);
767 struct ptlrpc_request *req;
768 struct req_format *req_fmt;
773 if (op_data->op_bias & MDS_HSM_RELEASE) {
774 req_fmt = &RQF_MDS_INTENT_CLOSE;
776 /* allocate a FID for volatile file */
777 rc = mdc_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
779 CERROR("%s: "DFID" failed to allocate FID: %d\n",
780 obd->obd_name, PFID(&op_data->op_fid1), rc);
781 /* save the errcode and proceed to close */
784 } else if (op_data->op_bias & MDS_CLOSE_LAYOUT_SWAP) {
785 req_fmt = &RQF_MDS_INTENT_CLOSE;
787 req_fmt = &RQF_MDS_CLOSE;
791 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_CLOSE))
794 req = ptlrpc_request_alloc(class_exp2cliimp(exp), req_fmt);
796 /* Ensure that this close's handle is fixed up during replay. */
797 if (likely(mod != NULL)) {
798 LASSERTF(mod->mod_open_req != NULL &&
799 mod->mod_open_req->rq_type != LI_POISON,
800 "POISONED open %p!\n", mod->mod_open_req);
802 mod->mod_close_req = req;
804 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
805 /* We no longer want to preserve this open for replay even
806 * though the open was committed. b=3632, b=3633 */
807 spin_lock(&mod->mod_open_req->rq_lock);
808 mod->mod_open_req->rq_replay = 0;
809 spin_unlock(&mod->mod_open_req->rq_lock);
811 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
815 * TODO: repeat close after errors
817 CWARN("%s: close of FID "DFID" failed, file reference will be "
818 "dropped when this client unmounts or is evicted\n",
819 obd->obd_name, PFID(&op_data->op_fid1));
820 GOTO(out, rc = -ENOMEM);
823 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
825 ptlrpc_request_free(req);
830 /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
831 * portal whose threads are not taking any DLM locks and are therefore
832 * always progressing */
833 req->rq_request_portal = MDS_READPAGE_PORTAL;
834 ptlrpc_at_set_req_timeout(req);
837 mdc_close_pack(req, op_data);
839 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
840 obd->u.cli.cl_default_mds_easize);
842 ptlrpc_request_set_replen(req);
844 mdc_get_mod_rpc_slot(req, NULL);
845 rc = ptlrpc_queue_wait(req);
846 mdc_put_mod_rpc_slot(req, NULL);
848 if (req->rq_repmsg == NULL) {
849 CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req,
852 rc = req->rq_status ?: -EIO;
853 } else if (rc == 0 || rc == -EAGAIN) {
854 struct mdt_body *body;
856 rc = lustre_msg_get_status(req->rq_repmsg);
857 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
858 DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err "
863 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
866 } else if (rc == -ESTALE) {
868 * it can be allowed error after 3633 if open was committed and
869 * server failed before close was sent. Let's check if mod
870 * exists and return no error in that case
873 DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc);
874 LASSERT(mod->mod_open_req != NULL);
875 if (mod->mod_open_req->rq_committed)
883 mod->mod_close_req = NULL;
884 /* Since now, mod is accessed through open_req only,
885 * thus close req does not keep a reference on mod anymore. */
890 RETURN(rc < 0 ? rc : saved_rc);
893 static int mdc_getpage(struct obd_export *exp, const struct lu_fid *fid,
894 u64 offset, struct page **pages, int npages,
895 struct ptlrpc_request **request)
897 struct ptlrpc_request *req;
898 struct ptlrpc_bulk_desc *desc;
900 wait_queue_head_t waitq;
902 struct l_wait_info lwi;
907 init_waitqueue_head(&waitq);
910 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
914 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
916 ptlrpc_request_free(req);
920 req->rq_request_portal = MDS_READPAGE_PORTAL;
921 ptlrpc_at_set_req_timeout(req);
923 desc = ptlrpc_prep_bulk_imp(req, npages, 1,
924 PTLRPC_BULK_PUT_SINK | PTLRPC_BULK_BUF_KIOV,
926 &ptlrpc_bulk_kiov_pin_ops);
928 ptlrpc_request_free(req);
932 /* NB req now owns desc and will free it when it gets freed */
933 for (i = 0; i < npages; i++)
934 desc->bd_frag_ops->add_kiov_frag(desc, pages[i], 0,
937 mdc_readdir_pack(req, offset, PAGE_SIZE * npages, fid);
939 ptlrpc_request_set_replen(req);
940 rc = ptlrpc_queue_wait(req);
942 ptlrpc_req_finished(req);
943 if (rc != -ETIMEDOUT)
947 if (!client_should_resend(resends, &exp->exp_obd->u.cli)) {
948 CERROR("%s: too many resend retries: rc = %d\n",
949 exp->exp_obd->obd_name, -EIO);
952 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL,
954 l_wait_event(waitq, 0, &lwi);
959 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
960 req->rq_bulk->bd_nob_transferred);
962 ptlrpc_req_finished(req);
966 if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) {
967 CERROR("%s: unexpected bytes transferred: %d (%ld expected)\n",
968 exp->exp_obd->obd_name, req->rq_bulk->bd_nob_transferred,
970 ptlrpc_req_finished(req);
978 static void mdc_release_page(struct page *page, int remove)
982 if (likely(page->mapping != NULL))
983 truncate_complete_page(page->mapping, page);
989 static struct page *mdc_page_locate(struct address_space *mapping, __u64 *hash,
990 __u64 *start, __u64 *end, int hash64)
993 * Complement of hash is used as an index so that
994 * radix_tree_gang_lookup() can be used to find a page with starting
995 * hash _smaller_ than one we are looking for.
997 unsigned long offset = hash_x_index(*hash, hash64);
1001 spin_lock_irq(&mapping->tree_lock);
1002 found = radix_tree_gang_lookup(&mapping->page_tree,
1003 (void **)&page, offset, 1);
1004 if (found > 0 && !radix_tree_exceptional_entry(page)) {
1005 struct lu_dirpage *dp;
1008 spin_unlock_irq(&mapping->tree_lock);
1010 * In contrast to find_lock_page() we are sure that directory
1011 * page cannot be truncated (while DLM lock is held) and,
1012 * hence, can avoid restart.
1014 * In fact, page cannot be locked here at all, because
1015 * mdc_read_page_remote does synchronous io.
1017 wait_on_page_locked(page);
1018 if (PageUptodate(page)) {
1020 if (BITS_PER_LONG == 32 && hash64) {
1021 *start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1022 *end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1023 *hash = *hash >> 32;
1025 *start = le64_to_cpu(dp->ldp_hash_start);
1026 *end = le64_to_cpu(dp->ldp_hash_end);
1028 if (unlikely(*start == 1 && *hash == 0))
1031 LASSERTF(*start <= *hash, "start = %#llx"
1032 ",end = %#llx,hash = %#llx\n",
1033 *start, *end, *hash);
1034 CDEBUG(D_VFSTRACE, "offset %lx [%#llx %#llx],"
1035 " hash %#llx\n", offset, *start, *end, *hash);
1038 mdc_release_page(page, 0);
1040 } else if (*end != *start && *hash == *end) {
1042 * upon hash collision, remove this page,
1043 * otherwise put page reference, and
1044 * mdc_read_page_remote() will issue RPC to
1045 * fetch the page we want.
1048 mdc_release_page(page,
1049 le32_to_cpu(dp->ldp_flags) & LDF_COLLIDE);
1054 page = ERR_PTR(-EIO);
1057 spin_unlock_irq(&mapping->tree_lock);
1064 * Adjust a set of pages, each page containing an array of lu_dirpages,
1065 * so that each page can be used as a single logical lu_dirpage.
1067 * A lu_dirpage is laid out as follows, where s = ldp_hash_start,
1068 * e = ldp_hash_end, f = ldp_flags, p = padding, and each "ent" is a
1069 * struct lu_dirent. It has size up to LU_PAGE_SIZE. The ldp_hash_end
1070 * value is used as a cookie to request the next lu_dirpage in a
1071 * directory listing that spans multiple pages (two in this example):
1074 * .|--------v------- -----.
1075 * |s|e|f|p|ent|ent| ... |ent|
1076 * '--|-------------- -----' Each PAGE contains a single
1077 * '------. lu_dirpage.
1078 * .---------v------- -----.
1079 * |s|e|f|p|ent| 0 | ... | 0 |
1080 * '----------------- -----'
1082 * However, on hosts where the native VM page size (PAGE_SIZE) is
1083 * larger than LU_PAGE_SIZE, a single host page may contain multiple
1084 * lu_dirpages. After reading the lu_dirpages from the MDS, the
1085 * ldp_hash_end of the first lu_dirpage refers to the one immediately
1086 * after it in the same PAGE (arrows simplified for brevity, but
1087 * in general e0==s1, e1==s2, etc.):
1089 * .-------------------- -----.
1090 * |s0|e0|f0|p|ent|ent| ... |ent|
1091 * |---v---------------- -----|
1092 * |s1|e1|f1|p|ent|ent| ... |ent|
1093 * |---v---------------- -----| Here, each PAGE contains
1094 * ... multiple lu_dirpages.
1095 * |---v---------------- -----|
1096 * |s'|e'|f'|p|ent|ent| ... |ent|
1097 * '---|---------------- -----'
1099 * .----------------------------.
1102 * This structure is transformed into a single logical lu_dirpage as follows:
1104 * - Replace e0 with e' so the request for the next lu_dirpage gets the page
1105 * labeled 'next PAGE'.
1107 * - Copy the LDF_COLLIDE flag from f' to f0 to correctly reflect whether
1108 * a hash collision with the next page exists.
1110 * - Adjust the lde_reclen of the ending entry of each lu_dirpage to span
1111 * to the first entry of the next lu_dirpage.
1113 #if PAGE_SIZE > LU_PAGE_SIZE
1114 static void mdc_adjust_dirpages(struct page **pages, int cfs_pgs, int lu_pgs)
1118 for (i = 0; i < cfs_pgs; i++) {
1119 struct lu_dirpage *dp = kmap(pages[i]);
1120 struct lu_dirpage *first = dp;
1121 struct lu_dirent *end_dirent = NULL;
1122 struct lu_dirent *ent;
1123 __u64 hash_end = le64_to_cpu(dp->ldp_hash_end);
1124 __u32 flags = le32_to_cpu(dp->ldp_flags);
1126 while (--lu_pgs > 0) {
1127 ent = lu_dirent_start(dp);
1128 for (end_dirent = ent; ent != NULL;
1129 end_dirent = ent, ent = lu_dirent_next(ent));
1131 /* Advance dp to next lu_dirpage. */
1132 dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE);
1134 /* Check if we've reached the end of the PAGE. */
1135 if (!((unsigned long)dp & ~PAGE_MASK))
1138 /* Save the hash and flags of this lu_dirpage. */
1139 hash_end = le64_to_cpu(dp->ldp_hash_end);
1140 flags = le32_to_cpu(dp->ldp_flags);
1142 /* Check if lu_dirpage contains no entries. */
1143 if (end_dirent == NULL)
1146 /* Enlarge the end entry lde_reclen from 0 to
1147 * first entry of next lu_dirpage. */
1148 LASSERT(le16_to_cpu(end_dirent->lde_reclen) == 0);
1149 end_dirent->lde_reclen =
1150 cpu_to_le16((char *)(dp->ldp_entries) -
1151 (char *)end_dirent);
1154 first->ldp_hash_end = hash_end;
1155 first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE);
1156 first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE);
1160 LASSERTF(lu_pgs == 0, "left = %d\n", lu_pgs);
1163 #define mdc_adjust_dirpages(pages, cfs_pgs, lu_pgs) do {} while (0)
1164 #endif /* PAGE_SIZE > LU_PAGE_SIZE */
1166 /* parameters for readdir page */
1167 struct readpage_param {
1168 struct md_op_data *rp_mod;
1171 struct obd_export *rp_exp;
1172 struct md_callback *rp_cb;
1175 #ifndef HAVE_DELETE_FROM_PAGE_CACHE
1176 static inline void delete_from_page_cache(struct page *page)
1178 remove_from_page_cache(page);
1184 * Read pages from server.
1186 * Page in MDS_READPAGE RPC is packed in LU_PAGE_SIZE, and each page contains
1187 * a header lu_dirpage which describes the start/end hash, and whether this
1188 * page is empty (contains no dir entry) or hash collide with next page.
1189 * After client receives reply, several pages will be integrated into dir page
1190 * in PAGE_SIZE (if PAGE_SIZE greater than LU_PAGE_SIZE), and the
1191 * lu_dirpage for this integrated page will be adjusted.
1193 static int mdc_read_page_remote(void *data, struct page *page0)
1195 struct readpage_param *rp = data;
1196 struct page **page_pool;
1198 struct lu_dirpage *dp;
1199 int rd_pgs = 0; /* number of pages read actually */
1201 struct md_op_data *op_data = rp->rp_mod;
1202 struct ptlrpc_request *req;
1203 int max_pages = op_data->op_max_pages;
1204 struct inode *inode;
1210 LASSERT(max_pages > 0 && max_pages <= PTLRPC_MAX_BRW_PAGES);
1211 inode = op_data->op_data;
1212 fid = &op_data->op_fid1;
1213 LASSERT(inode != NULL);
1215 OBD_ALLOC(page_pool, sizeof(page_pool[0]) * max_pages);
1216 if (page_pool != NULL) {
1217 page_pool[0] = page0;
1223 for (npages = 1; npages < max_pages; npages++) {
1224 page = page_cache_alloc_cold(inode->i_mapping);
1227 page_pool[npages] = page;
1230 rc = mdc_getpage(rp->rp_exp, fid, rp->rp_off, page_pool, npages, &req);
1232 /* page0 is special, which was added into page cache early */
1233 delete_from_page_cache(page0);
1237 rd_pgs = (req->rq_bulk->bd_nob_transferred +
1238 PAGE_SIZE - 1) >> PAGE_SHIFT;
1239 lu_pgs = req->rq_bulk->bd_nob_transferred >>
1241 LASSERT(!(req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK));
1243 CDEBUG(D_INODE, "read %d(%d) pages\n", rd_pgs, lu_pgs);
1245 mdc_adjust_dirpages(page_pool, rd_pgs, lu_pgs);
1247 SetPageUptodate(page0);
1251 ptlrpc_req_finished(req);
1252 CDEBUG(D_CACHE, "read %d/%d pages\n", rd_pgs, npages);
1253 for (i = 1; i < npages; i++) {
1254 unsigned long offset;
1258 page = page_pool[i];
1260 if (rc < 0 || i >= rd_pgs) {
1265 SetPageUptodate(page);
1268 hash = le64_to_cpu(dp->ldp_hash_start);
1271 offset = hash_x_index(hash, rp->rp_hash64);
1273 prefetchw(&page->flags);
1274 ret = add_to_page_cache_lru(page, inode->i_mapping, offset,
1279 CDEBUG(D_VFSTRACE, "page %lu add to page cache failed:"
1280 " rc = %d\n", offset, ret);
1284 if (page_pool != &page0)
1285 OBD_FREE(page_pool, sizeof(page_pool[0]) * max_pages);
1291 * Read dir page from cache first, if it can not find it, read it from
1292 * server and add into the cache.
1294 * \param[in] exp MDC export
1295 * \param[in] op_data client MD stack parameters, transfering parameters
1296 * between different layers on client MD stack.
1297 * \param[in] cb_op callback required for ldlm lock enqueue during
1299 * \param[in] hash_offset the hash offset of the page to be read
1300 * \param[in] ppage the page to be read
1302 * retval = 0 get the page successfully
1303 * errno(<0) get the page failed
1305 static int mdc_read_page(struct obd_export *exp, struct md_op_data *op_data,
1306 struct md_callback *cb_op, __u64 hash_offset,
1307 struct page **ppage)
1309 struct lookup_intent it = { .it_op = IT_READDIR };
1311 struct inode *dir = op_data->op_data;
1312 struct address_space *mapping;
1313 struct lu_dirpage *dp;
1316 struct lustre_handle lockh;
1317 struct ptlrpc_request *enq_req = NULL;
1318 struct readpage_param rp_param;
1325 LASSERT(dir != NULL);
1326 mapping = dir->i_mapping;
1328 rc = mdc_intent_lock(exp, op_data, &it, &enq_req,
1329 cb_op->md_blocking_ast, 0);
1330 if (enq_req != NULL)
1331 ptlrpc_req_finished(enq_req);
1334 CERROR("%s: "DFID" lock enqueue fails: rc = %d\n",
1335 exp->exp_obd->obd_name, PFID(&op_data->op_fid1), rc);
1340 lockh.cookie = it.it_lock_handle;
1341 mdc_set_lock_data(exp, &lockh, dir, NULL);
1343 rp_param.rp_off = hash_offset;
1344 rp_param.rp_hash64 = op_data->op_cli_flags & CLI_HASH64;
1345 page = mdc_page_locate(mapping, &rp_param.rp_off, &start, &end,
1346 rp_param.rp_hash64);
1348 CERROR("%s: dir page locate: "DFID" at %llu: rc %ld\n",
1349 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1350 rp_param.rp_off, PTR_ERR(page));
1351 GOTO(out_unlock, rc = PTR_ERR(page));
1352 } else if (page != NULL) {
1354 * XXX nikita: not entirely correct handling of a corner case:
1355 * suppose hash chain of entries with hash value HASH crosses
1356 * border between pages P0 and P1. First both P0 and P1 are
1357 * cached, seekdir() is called for some entry from the P0 part
1358 * of the chain. Later P0 goes out of cache. telldir(HASH)
1359 * happens and finds P1, as it starts with matching hash
1360 * value. Remaining entries from P0 part of the chain are
1361 * skipped. (Is that really a bug?)
1363 * Possible solutions: 0. don't cache P1 is such case, handle
1364 * it as an "overflow" page. 1. invalidate all pages at
1365 * once. 2. use HASH|1 as an index for P1.
1367 GOTO(hash_collision, page);
1370 rp_param.rp_exp = exp;
1371 rp_param.rp_mod = op_data;
1372 page = read_cache_page(mapping,
1373 hash_x_index(rp_param.rp_off,
1374 rp_param.rp_hash64),
1375 mdc_read_page_remote, &rp_param);
1377 CDEBUG(D_INFO, "%s: read cache page: "DFID" at %llu: %ld\n",
1378 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1379 rp_param.rp_off, PTR_ERR(page));
1380 GOTO(out_unlock, rc = PTR_ERR(page));
1383 wait_on_page_locked(page);
1385 if (!PageUptodate(page)) {
1386 CERROR("%s: page not updated: "DFID" at %llu: rc %d\n",
1387 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1388 rp_param.rp_off, -5);
1391 if (!PageChecked(page))
1392 SetPageChecked(page);
1393 if (PageError(page)) {
1394 CERROR("%s: page error: "DFID" at %llu: rc %d\n",
1395 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1396 rp_param.rp_off, -5);
1401 dp = page_address(page);
1402 if (BITS_PER_LONG == 32 && rp_param.rp_hash64) {
1403 start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1404 end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1405 rp_param.rp_off = hash_offset >> 32;
1407 start = le64_to_cpu(dp->ldp_hash_start);
1408 end = le64_to_cpu(dp->ldp_hash_end);
1409 rp_param.rp_off = hash_offset;
1412 LASSERT(start == rp_param.rp_off);
1413 CWARN("Page-wide hash collision: %#lx\n", (unsigned long)end);
1414 #if BITS_PER_LONG == 32
1415 CWARN("Real page-wide hash collision at [%llu %llu] with "
1416 "hash %llu\n", le64_to_cpu(dp->ldp_hash_start),
1417 le64_to_cpu(dp->ldp_hash_end), hash_offset);
1421 * Fetch whole overflow chain...
1429 ldlm_lock_decref(&lockh, it.it_lock_mode);
1433 mdc_release_page(page, 1);
1439 static int mdc_statfs(const struct lu_env *env,
1440 struct obd_export *exp, struct obd_statfs *osfs,
1441 __u64 max_age, __u32 flags)
1443 struct obd_device *obd = class_exp2obd(exp);
1444 struct ptlrpc_request *req;
1445 struct obd_statfs *msfs;
1446 struct obd_import *imp = NULL;
1451 * Since the request might also come from lprocfs, so we need
1452 * sync this with client_disconnect_export Bug15684
1454 down_read(&obd->u.cli.cl_sem);
1455 if (obd->u.cli.cl_import)
1456 imp = class_import_get(obd->u.cli.cl_import);
1457 up_read(&obd->u.cli.cl_sem);
1461 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS,
1462 LUSTRE_MDS_VERSION, MDS_STATFS);
1464 GOTO(output, rc = -ENOMEM);
1466 ptlrpc_request_set_replen(req);
1468 if (flags & OBD_STATFS_NODELAY) {
1469 /* procfs requests not want stay in wait for avoid deadlock */
1470 req->rq_no_resend = 1;
1471 req->rq_no_delay = 1;
1474 rc = ptlrpc_queue_wait(req);
1476 /* check connection error first */
1477 if (imp->imp_connect_error)
1478 rc = imp->imp_connect_error;
1482 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1484 GOTO(out, rc = -EPROTO);
1489 ptlrpc_req_finished(req);
1491 class_import_put(imp);
1495 static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
1497 __u32 keylen, vallen;
1501 if (gf->gf_pathlen > PATH_MAX)
1502 RETURN(-ENAMETOOLONG);
1503 if (gf->gf_pathlen < 2)
1506 /* Key is KEY_FID2PATH + getinfo_fid2path description */
1507 keylen = cfs_size_round(sizeof(KEY_FID2PATH) + sizeof(*gf) +
1508 sizeof(struct lu_fid));
1509 OBD_ALLOC(key, keylen);
1512 memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
1513 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
1514 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf),
1515 gf->gf_u.gf_root_fid, sizeof(struct lu_fid));
1516 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
1517 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
1519 if (!fid_is_sane(&gf->gf_fid))
1520 GOTO(out, rc = -EINVAL);
1522 /* Val is struct getinfo_fid2path result plus path */
1523 vallen = sizeof(*gf) + gf->gf_pathlen;
1525 rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf);
1526 if (rc != 0 && rc != -EREMOTE)
1529 if (vallen <= sizeof(*gf))
1530 GOTO(out, rc = -EPROTO);
1531 if (vallen > sizeof(*gf) + gf->gf_pathlen)
1532 GOTO(out, rc = -EOVERFLOW);
1534 CDEBUG(D_IOCTL, "path got "DFID" from %llu #%d: %s\n",
1535 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno,
1536 gf->gf_pathlen < 512 ? gf->gf_u.gf_path :
1537 /* only log the last 512 characters of the path */
1538 gf->gf_u.gf_path + gf->gf_pathlen - 512);
1541 OBD_FREE(key, keylen);
1545 static int mdc_ioc_hsm_progress(struct obd_export *exp,
1546 struct hsm_progress_kernel *hpk)
1548 struct obd_import *imp = class_exp2cliimp(exp);
1549 struct hsm_progress_kernel *req_hpk;
1550 struct ptlrpc_request *req;
1554 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS,
1555 LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS);
1557 GOTO(out, rc = -ENOMEM);
1559 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1561 /* Copy hsm_progress struct */
1562 req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS);
1563 if (req_hpk == NULL)
1564 GOTO(out, rc = -EPROTO);
1567 req_hpk->hpk_errval = lustre_errno_hton(hpk->hpk_errval);
1569 ptlrpc_request_set_replen(req);
1571 mdc_get_mod_rpc_slot(req, NULL);
1572 rc = ptlrpc_queue_wait(req);
1573 mdc_put_mod_rpc_slot(req, NULL);
1577 ptlrpc_req_finished(req);
1581 static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archives)
1583 __u32 *archive_mask;
1584 struct ptlrpc_request *req;
1588 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_REGISTER,
1590 MDS_HSM_CT_REGISTER);
1592 GOTO(out, rc = -ENOMEM);
1594 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1596 /* Copy hsm_progress struct */
1597 archive_mask = req_capsule_client_get(&req->rq_pill,
1598 &RMF_MDS_HSM_ARCHIVE);
1599 if (archive_mask == NULL)
1600 GOTO(out, rc = -EPROTO);
1602 *archive_mask = archives;
1604 ptlrpc_request_set_replen(req);
1606 rc = mdc_queue_wait(req);
1609 ptlrpc_req_finished(req);
1613 static int mdc_ioc_hsm_current_action(struct obd_export *exp,
1614 struct md_op_data *op_data)
1616 struct hsm_current_action *hca = op_data->op_data;
1617 struct hsm_current_action *req_hca;
1618 struct ptlrpc_request *req;
1622 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1623 &RQF_MDS_HSM_ACTION);
1627 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION);
1629 ptlrpc_request_free(req);
1633 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1634 op_data->op_suppgids[0], 0);
1636 ptlrpc_request_set_replen(req);
1638 rc = mdc_queue_wait(req);
1642 req_hca = req_capsule_server_get(&req->rq_pill,
1643 &RMF_MDS_HSM_CURRENT_ACTION);
1644 if (req_hca == NULL)
1645 GOTO(out, rc = -EPROTO);
1651 ptlrpc_req_finished(req);
1655 static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp)
1657 struct ptlrpc_request *req;
1661 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER,
1663 MDS_HSM_CT_UNREGISTER);
1665 GOTO(out, rc = -ENOMEM);
1667 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1669 ptlrpc_request_set_replen(req);
1671 rc = mdc_queue_wait(req);
1674 ptlrpc_req_finished(req);
1678 static int mdc_ioc_hsm_state_get(struct obd_export *exp,
1679 struct md_op_data *op_data)
1681 struct hsm_user_state *hus = op_data->op_data;
1682 struct hsm_user_state *req_hus;
1683 struct ptlrpc_request *req;
1687 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1688 &RQF_MDS_HSM_STATE_GET);
1692 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET);
1694 ptlrpc_request_free(req);
1698 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1699 op_data->op_suppgids[0], 0);
1701 ptlrpc_request_set_replen(req);
1703 rc = mdc_queue_wait(req);
1707 req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE);
1708 if (req_hus == NULL)
1709 GOTO(out, rc = -EPROTO);
1715 ptlrpc_req_finished(req);
1719 static int mdc_ioc_hsm_state_set(struct obd_export *exp,
1720 struct md_op_data *op_data)
1722 struct hsm_state_set *hss = op_data->op_data;
1723 struct hsm_state_set *req_hss;
1724 struct ptlrpc_request *req;
1728 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1729 &RQF_MDS_HSM_STATE_SET);
1733 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET);
1735 ptlrpc_request_free(req);
1739 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1740 op_data->op_suppgids[0], 0);
1743 req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET);
1744 if (req_hss == NULL)
1745 GOTO(out, rc = -EPROTO);
1748 ptlrpc_request_set_replen(req);
1750 mdc_get_mod_rpc_slot(req, NULL);
1751 rc = ptlrpc_queue_wait(req);
1752 mdc_put_mod_rpc_slot(req, NULL);
1756 ptlrpc_req_finished(req);
1760 static int mdc_ioc_hsm_request(struct obd_export *exp,
1761 struct hsm_user_request *hur)
1763 struct obd_import *imp = class_exp2cliimp(exp);
1764 struct ptlrpc_request *req;
1765 struct hsm_request *req_hr;
1766 struct hsm_user_item *req_hui;
1771 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST);
1773 GOTO(out, rc = -ENOMEM);
1775 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT,
1776 hur->hur_request.hr_itemcount
1777 * sizeof(struct hsm_user_item));
1778 req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT,
1779 hur->hur_request.hr_data_len);
1781 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST);
1783 ptlrpc_request_free(req);
1787 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1789 /* Copy hsm_request struct */
1790 req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST);
1792 GOTO(out, rc = -EPROTO);
1793 *req_hr = hur->hur_request;
1795 /* Copy hsm_user_item structs */
1796 req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM);
1797 if (req_hui == NULL)
1798 GOTO(out, rc = -EPROTO);
1799 memcpy(req_hui, hur->hur_user_item,
1800 hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item));
1802 /* Copy opaque field */
1803 req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA);
1804 if (req_opaque == NULL)
1805 GOTO(out, rc = -EPROTO);
1806 memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len);
1808 ptlrpc_request_set_replen(req);
1810 mdc_get_mod_rpc_slot(req, NULL);
1811 rc = ptlrpc_queue_wait(req);
1812 mdc_put_mod_rpc_slot(req, NULL);
1817 ptlrpc_req_finished(req);
1821 static struct kuc_hdr *changelog_kuc_hdr(char *buf, size_t len, __u32 flags)
1823 struct kuc_hdr *lh = (struct kuc_hdr *)buf;
1825 LASSERT(len <= KUC_CHANGELOG_MSG_MAXSIZE);
1827 lh->kuc_magic = KUC_MAGIC;
1828 lh->kuc_transport = KUC_TRANSPORT_CHANGELOG;
1829 lh->kuc_flags = flags;
1830 lh->kuc_msgtype = CL_RECORD;
1831 lh->kuc_msglen = len;
1835 struct changelog_show {
1837 enum changelog_send_flag cs_flags;
1840 struct obd_device *cs_obd;
1843 static inline char *cs_obd_name(struct changelog_show *cs)
1845 return cs->cs_obd->obd_name;
1848 static int changelog_kkuc_cb(const struct lu_env *env, struct llog_handle *llh,
1849 struct llog_rec_hdr *hdr, void *data)
1851 struct changelog_show *cs = data;
1852 struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
1858 if (rec->cr_hdr.lrh_type != CHANGELOG_REC) {
1860 CERROR("%s: not a changelog rec %x/%d: rc = %d\n",
1861 cs_obd_name(cs), rec->cr_hdr.lrh_type,
1862 rec->cr.cr_type, rc);
1866 if (rec->cr.cr_index < cs->cs_startrec) {
1867 /* Skip entries earlier than what we are interested in */
1868 CDEBUG(D_HSM, "rec=%llu start=%llu\n",
1869 rec->cr.cr_index, cs->cs_startrec);
1873 CDEBUG(D_HSM, "%llu %02d%-5s %llu 0x%x t="DFID" p="DFID" %.*s\n",
1874 rec->cr.cr_index, rec->cr.cr_type,
1875 changelog_type2str(rec->cr.cr_type), rec->cr.cr_time,
1876 rec->cr.cr_flags & CLF_FLAGMASK,
1877 PFID(&rec->cr.cr_tfid), PFID(&rec->cr.cr_pfid),
1878 rec->cr.cr_namelen, changelog_rec_name(&rec->cr));
1880 len = sizeof(*lh) + changelog_rec_size(&rec->cr) + rec->cr.cr_namelen;
1882 /* Set up the message */
1883 lh = changelog_kuc_hdr(cs->cs_buf, len, cs->cs_flags);
1884 memcpy(lh + 1, &rec->cr, len - sizeof(*lh));
1886 rc = libcfs_kkuc_msg_put(cs->cs_fp, lh);
1887 CDEBUG(D_HSM, "kucmsg fp %p len %zu rc %d\n", cs->cs_fp, len, rc);
1892 static int mdc_changelog_send_thread(void *csdata)
1894 struct changelog_show *cs = csdata;
1895 struct llog_ctxt *ctxt = NULL;
1896 struct llog_handle *llh = NULL;
1897 struct kuc_hdr *kuch;
1898 enum llog_flag flags = LLOG_F_IS_CAT;
1901 CDEBUG(D_HSM, "changelog to fp=%p start %llu\n",
1902 cs->cs_fp, cs->cs_startrec);
1904 OBD_ALLOC(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE);
1905 if (cs->cs_buf == NULL)
1906 GOTO(out, rc = -ENOMEM);
1908 /* Set up the remote catalog handle */
1909 ctxt = llog_get_context(cs->cs_obd, LLOG_CHANGELOG_REPL_CTXT);
1911 GOTO(out, rc = -ENOENT);
1912 rc = llog_open(NULL, ctxt, &llh, NULL, CHANGELOG_CATALOG,
1915 CERROR("%s: fail to open changelog catalog: rc = %d\n",
1916 cs_obd_name(cs), rc);
1920 if (cs->cs_flags & CHANGELOG_FLAG_JOBID)
1921 flags |= LLOG_F_EXT_JOBID;
1923 rc = llog_init_handle(NULL, llh, flags, NULL);
1925 CERROR("llog_init_handle failed %d\n", rc);
1929 rc = llog_cat_process(NULL, llh, changelog_kkuc_cb, cs, 0, 0);
1931 /* Send EOF no matter what our result */
1932 kuch = changelog_kuc_hdr(cs->cs_buf, sizeof(*kuch), cs->cs_flags);
1933 kuch->kuc_msgtype = CL_EOF;
1934 libcfs_kkuc_msg_put(cs->cs_fp, kuch);
1939 llog_cat_close(NULL, llh);
1941 llog_ctxt_put(ctxt);
1943 OBD_FREE(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE);
1948 static int mdc_ioc_changelog_send(struct obd_device *obd,
1949 struct ioc_changelog *icc)
1951 struct changelog_show *cs;
1952 struct task_struct *task;
1955 /* Freed in mdc_changelog_send_thread */
1961 cs->cs_startrec = icc->icc_recno;
1962 /* matching fput in mdc_changelog_send_thread */
1963 cs->cs_fp = fget(icc->icc_id);
1964 cs->cs_flags = icc->icc_flags;
1967 * New thread because we should return to user app before
1968 * writing into our pipe
1970 task = kthread_run(mdc_changelog_send_thread, cs,
1971 "mdc_clg_send_thread");
1974 CERROR("%s: cannot start changelog thread: rc = %d\n",
1975 cs_obd_name(cs), rc);
1979 CDEBUG(D_HSM, "%s: started changelog thread\n",
1986 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
1987 struct lustre_kernelcomm *lk);
1989 static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp,
1990 struct obd_quotactl *oqctl)
1992 struct ptlrpc_request *req;
1993 struct obd_quotactl *oqc;
1997 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
1998 &RQF_MDS_QUOTACTL, LUSTRE_MDS_VERSION,
2003 oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
2006 ptlrpc_request_set_replen(req);
2007 ptlrpc_at_set_req_timeout(req);
2008 req->rq_no_resend = 1;
2010 rc = ptlrpc_queue_wait(req);
2012 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
2014 if (req->rq_repmsg &&
2015 (oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL))) {
2018 CERROR ("Can't unpack obd_quotactl\n");
2021 ptlrpc_req_finished(req);
2026 static int mdc_ioc_swap_layouts(struct obd_export *exp,
2027 struct md_op_data *op_data)
2029 struct list_head cancels = LIST_HEAD_INIT(cancels);
2030 struct ptlrpc_request *req;
2032 struct mdc_swap_layouts *msl, *payload;
2035 msl = op_data->op_data;
2037 /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the
2038 * first thing it will do is to cancel the 2 layout
2039 * locks held by this client.
2040 * So the client must cancel its layout locks on the 2 fids
2041 * with the request RPC to avoid extra RPC round trips.
2043 count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels,
2044 LCK_EX, MDS_INODELOCK_LAYOUT |
2045 MDS_INODELOCK_XATTR);
2046 count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels,
2047 LCK_EX, MDS_INODELOCK_LAYOUT |
2048 MDS_INODELOCK_XATTR);
2050 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2051 &RQF_MDS_SWAP_LAYOUTS);
2053 ldlm_lock_list_put(&cancels, l_bl_ast, count);
2057 rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count);
2059 ptlrpc_request_free(req);
2063 mdc_swap_layouts_pack(req, op_data);
2065 payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS);
2070 ptlrpc_request_set_replen(req);
2072 rc = ptlrpc_queue_wait(req);
2078 ptlrpc_req_finished(req);
2082 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2083 void *karg, void __user *uarg)
2085 struct obd_device *obd = exp->exp_obd;
2086 struct obd_ioctl_data *data = karg;
2087 struct obd_import *imp = obd->u.cli.cl_import;
2091 if (!try_module_get(THIS_MODULE)) {
2092 CERROR("%s: cannot get module '%s'\n", obd->obd_name,
2093 module_name(THIS_MODULE));
2097 case OBD_IOC_CHANGELOG_SEND:
2098 rc = mdc_ioc_changelog_send(obd, karg);
2100 case OBD_IOC_CHANGELOG_CLEAR: {
2101 struct ioc_changelog *icc = karg;
2102 struct changelog_setinfo cs =
2103 {.cs_recno = icc->icc_recno, .cs_id = icc->icc_id};
2104 rc = obd_set_info_async(NULL, exp, strlen(KEY_CHANGELOG_CLEAR),
2105 KEY_CHANGELOG_CLEAR, sizeof(cs), &cs,
2109 case OBD_IOC_FID2PATH:
2110 rc = mdc_ioc_fid2path(exp, karg);
2112 case LL_IOC_HSM_CT_START:
2113 rc = mdc_ioc_hsm_ct_start(exp, karg);
2114 /* ignore if it was already registered on this MDS. */
2118 case LL_IOC_HSM_PROGRESS:
2119 rc = mdc_ioc_hsm_progress(exp, karg);
2121 case LL_IOC_HSM_STATE_GET:
2122 rc = mdc_ioc_hsm_state_get(exp, karg);
2124 case LL_IOC_HSM_STATE_SET:
2125 rc = mdc_ioc_hsm_state_set(exp, karg);
2127 case LL_IOC_HSM_ACTION:
2128 rc = mdc_ioc_hsm_current_action(exp, karg);
2130 case LL_IOC_HSM_REQUEST:
2131 rc = mdc_ioc_hsm_request(exp, karg);
2133 case OBD_IOC_CLIENT_RECOVER:
2134 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0);
2138 case IOC_OSC_SET_ACTIVE:
2139 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
2141 case OBD_IOC_PING_TARGET:
2142 rc = ptlrpc_obd_ping(obd);
2145 * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by
2146 * LMV instead of MDC. But when the cluster is upgraded from 1.8,
2147 * there'd be no LMV layer thus we might be called here. Eventually
2148 * this code should be removed.
2151 case IOC_OBD_STATFS: {
2152 struct obd_statfs stat_buf = {0};
2154 if (*((__u32 *) data->ioc_inlbuf2) != 0)
2155 GOTO(out, rc = -ENODEV);
2158 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
2159 min((int)data->ioc_plen2,
2160 (int)sizeof(struct obd_uuid))))
2161 GOTO(out, rc = -EFAULT);
2163 rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf,
2164 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
2169 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
2170 min((int) data->ioc_plen1,
2171 (int) sizeof(stat_buf))))
2172 GOTO(out, rc = -EFAULT);
2176 case OBD_IOC_QUOTACTL: {
2177 struct if_quotactl *qctl = karg;
2178 struct obd_quotactl *oqctl;
2180 OBD_ALLOC_PTR(oqctl);
2182 GOTO(out, rc = -ENOMEM);
2184 QCTL_COPY(oqctl, qctl);
2185 rc = obd_quotactl(exp, oqctl);
2187 QCTL_COPY(qctl, oqctl);
2188 qctl->qc_valid = QC_MDTIDX;
2189 qctl->obd_uuid = obd->u.cli.cl_target_uuid;
2192 OBD_FREE_PTR(oqctl);
2195 case LL_IOC_GET_CONNECT_FLAGS:
2196 if (copy_to_user(uarg, exp_connect_flags_ptr(exp),
2197 sizeof(*exp_connect_flags_ptr(exp))))
2198 GOTO(out, rc = -EFAULT);
2201 case LL_IOC_LOV_SWAP_LAYOUTS:
2202 rc = mdc_ioc_swap_layouts(exp, karg);
2205 CERROR("unrecognised ioctl: cmd = %#x\n", cmd);
2206 GOTO(out, rc = -ENOTTY);
2209 module_put(THIS_MODULE);
2214 static int mdc_get_info_rpc(struct obd_export *exp,
2215 u32 keylen, void *key,
2216 u32 vallen, void *val)
2218 struct obd_import *imp = class_exp2cliimp(exp);
2219 struct ptlrpc_request *req;
2224 req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
2228 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
2229 RCL_CLIENT, keylen);
2230 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
2231 RCL_CLIENT, sizeof(vallen));
2233 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
2235 ptlrpc_request_free(req);
2239 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
2240 memcpy(tmp, key, keylen);
2241 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
2242 memcpy(tmp, &vallen, sizeof(vallen));
2244 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
2245 RCL_SERVER, vallen);
2246 ptlrpc_request_set_replen(req);
2248 rc = ptlrpc_queue_wait(req);
2249 /* -EREMOTE means the get_info result is partial, and it needs to
2250 * continue on another MDT, see fid2path part in lmv_iocontrol */
2251 if (rc == 0 || rc == -EREMOTE) {
2252 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
2253 memcpy(val, tmp, vallen);
2254 if (ptlrpc_rep_need_swab(req)) {
2255 if (KEY_IS(KEY_FID2PATH))
2256 lustre_swab_fid2path(val);
2259 ptlrpc_req_finished(req);
2264 static void lustre_swab_hai(struct hsm_action_item *h)
2266 __swab32s(&h->hai_len);
2267 __swab32s(&h->hai_action);
2268 lustre_swab_lu_fid(&h->hai_fid);
2269 lustre_swab_lu_fid(&h->hai_dfid);
2270 __swab64s(&h->hai_cookie);
2271 __swab64s(&h->hai_extent.offset);
2272 __swab64s(&h->hai_extent.length);
2273 __swab64s(&h->hai_gid);
2276 static void lustre_swab_hal(struct hsm_action_list *h)
2278 struct hsm_action_item *hai;
2281 __swab32s(&h->hal_version);
2282 __swab32s(&h->hal_count);
2283 __swab32s(&h->hal_archive_id);
2284 __swab64s(&h->hal_flags);
2286 for (i = 0; i < h->hal_count; i++, hai = hai_next(hai))
2287 lustre_swab_hai(hai);
2290 static void lustre_swab_kuch(struct kuc_hdr *l)
2292 __swab16s(&l->kuc_magic);
2293 /* __u8 l->kuc_transport */
2294 __swab16s(&l->kuc_msgtype);
2295 __swab16s(&l->kuc_msglen);
2298 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2299 struct lustre_kernelcomm *lk)
2301 struct obd_import *imp = class_exp2cliimp(exp);
2302 __u32 archive = lk->lk_data;
2305 if (lk->lk_group != KUC_GRP_HSM) {
2306 CERROR("Bad copytool group %d\n", lk->lk_group);
2310 CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd,
2311 lk->lk_uid, lk->lk_group, lk->lk_flags);
2313 if (lk->lk_flags & LK_FLG_STOP) {
2314 /* Unregister with the coordinator */
2315 rc = mdc_ioc_hsm_ct_unregister(imp);
2317 rc = mdc_ioc_hsm_ct_register(imp, archive);
2324 * Send a message to any listening copytools
2325 * @param val KUC message (kuc_hdr + hsm_action_list)
2326 * @param len total length of message
2328 static int mdc_hsm_copytool_send(size_t len, void *val)
2330 struct kuc_hdr *lh = (struct kuc_hdr *)val;
2331 struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1);
2335 if (len < sizeof(*lh) + sizeof(*hal)) {
2336 CERROR("Short HSM message %zu < %zu\n", len,
2337 sizeof(*lh) + sizeof(*hal));
2340 if (lh->kuc_magic == __swab16(KUC_MAGIC)) {
2341 lustre_swab_kuch(lh);
2342 lustre_swab_hal(hal);
2343 } else if (lh->kuc_magic != KUC_MAGIC) {
2344 CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC);
2348 CDEBUG(D_HSM, " Received message mg=%x t=%d m=%d l=%d actions=%d "
2350 lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype,
2351 lh->kuc_msglen, hal->hal_count, hal->hal_fsname);
2353 /* Broadcast to HSM listeners */
2354 rc = libcfs_kkuc_group_put(KUC_GRP_HSM, lh);
2360 * callback function passed to kuc for re-registering each HSM copytool
2361 * running on MDC, after MDT shutdown/recovery.
2362 * @param data copytool registration data
2363 * @param cb_arg callback argument (obd_import)
2365 static int mdc_hsm_ct_reregister(void *data, void *cb_arg)
2367 struct kkuc_ct_data *kcd = data;
2368 struct obd_import *imp = (struct obd_import *)cb_arg;
2371 if (kcd == NULL || kcd->kcd_magic != KKUC_CT_DATA_MAGIC)
2374 if (!obd_uuid_equals(&kcd->kcd_uuid, &imp->imp_obd->obd_uuid))
2377 CDEBUG(D_HA, "%s: recover copytool registration to MDT (archive=%#x)\n",
2378 imp->imp_obd->obd_name, kcd->kcd_archive);
2379 rc = mdc_ioc_hsm_ct_register(imp, kcd->kcd_archive);
2381 /* ignore error if the copytool is already registered */
2382 return (rc == -EEXIST) ? 0 : rc;
2386 * Re-establish all kuc contexts with MDT
2387 * after MDT shutdown/recovery.
2389 static int mdc_kuc_reregister(struct obd_import *imp)
2391 /* re-register HSM agents */
2392 return libcfs_kkuc_group_foreach(KUC_GRP_HSM, mdc_hsm_ct_reregister,
2396 static int mdc_set_info_async(const struct lu_env *env,
2397 struct obd_export *exp,
2398 u32 keylen, void *key,
2399 u32 vallen, void *val,
2400 struct ptlrpc_request_set *set)
2402 struct obd_import *imp = class_exp2cliimp(exp);
2406 if (KEY_IS(KEY_READ_ONLY)) {
2407 if (vallen != sizeof(int))
2410 spin_lock(&imp->imp_lock);
2411 if (*((int *)val)) {
2412 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
2413 imp->imp_connect_data.ocd_connect_flags |=
2416 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
2417 imp->imp_connect_data.ocd_connect_flags &=
2418 ~OBD_CONNECT_RDONLY;
2420 spin_unlock(&imp->imp_lock);
2422 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2423 keylen, key, vallen, val, set);
2426 if (KEY_IS(KEY_SPTLRPC_CONF)) {
2427 sptlrpc_conf_client_adapt(exp->exp_obd);
2430 if (KEY_IS(KEY_FLUSH_CTX)) {
2431 sptlrpc_import_flush_my_ctx(imp);
2434 if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2435 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2436 keylen, key, vallen, val, set);
2439 if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) {
2440 rc = mdc_hsm_copytool_send(vallen, val);
2444 if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2445 __u32 *default_easize = val;
2447 exp->exp_obd->u.cli.cl_default_mds_easize = *default_easize;
2451 CERROR("Unknown key %s\n", (char *)key);
2455 static int mdc_get_info(const struct lu_env *env, struct obd_export *exp,
2456 __u32 keylen, void *key, __u32 *vallen, void *val)
2460 if (KEY_IS(KEY_MAX_EASIZE)) {
2461 __u32 mdsize, *max_easize;
2463 if (*vallen != sizeof(int))
2465 mdsize = *(__u32 *)val;
2466 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
2467 exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
2469 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
2471 } else if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2472 __u32 *default_easize;
2474 if (*vallen != sizeof(int))
2476 default_easize = val;
2477 *default_easize = exp->exp_obd->u.cli.cl_default_mds_easize;
2479 } else if (KEY_IS(KEY_CONN_DATA)) {
2480 struct obd_import *imp = class_exp2cliimp(exp);
2481 struct obd_connect_data *data = val;
2483 if (*vallen != sizeof(*data))
2486 *data = imp->imp_connect_data;
2488 } else if (KEY_IS(KEY_TGT_COUNT)) {
2489 *((__u32 *)val) = 1;
2493 rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
2498 static int mdc_fsync(struct obd_export *exp, const struct lu_fid *fid,
2499 struct ptlrpc_request **request)
2501 struct ptlrpc_request *req;
2506 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
2510 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
2512 ptlrpc_request_free(req);
2516 mdc_pack_body(req, fid, 0, 0, -1, 0);
2518 ptlrpc_request_set_replen(req);
2520 rc = ptlrpc_queue_wait(req);
2522 ptlrpc_req_finished(req);
2528 static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
2529 enum obd_import_event event)
2533 LASSERT(imp->imp_obd == obd);
2537 case IMP_EVENT_INACTIVE: {
2538 struct client_obd *cli = &obd->u.cli;
2540 * Flush current sequence to make client obtain new one
2541 * from server in case of disconnect/reconnect.
2543 down_read(&cli->cl_seq_rwsem);
2545 seq_client_flush(cli->cl_seq);
2546 up_read(&cli->cl_seq_rwsem);
2548 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE);
2551 case IMP_EVENT_INVALIDATE: {
2552 struct ldlm_namespace *ns = obd->obd_namespace;
2554 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2558 case IMP_EVENT_ACTIVE:
2559 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE);
2560 /* redo the kuc registration after reconnecting */
2562 rc = mdc_kuc_reregister(imp);
2565 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD);
2567 case IMP_EVENT_DISCON:
2568 case IMP_EVENT_DEACTIVATE:
2569 case IMP_EVENT_ACTIVATE:
2572 CERROR("Unknown import event %x\n", event);
2578 int mdc_fid_alloc(const struct lu_env *env, struct obd_export *exp,
2579 struct lu_fid *fid, struct md_op_data *op_data)
2581 struct client_obd *cli = &exp->exp_obd->u.cli;
2586 down_read(&cli->cl_seq_rwsem);
2588 rc = seq_client_alloc_fid(env, cli->cl_seq, fid);
2589 up_read(&cli->cl_seq_rwsem);
2594 static struct obd_uuid *mdc_get_uuid(struct obd_export *exp)
2596 struct client_obd *cli = &exp->exp_obd->u.cli;
2597 return &cli->cl_target_uuid;
2601 * Determine whether the lock can be canceled before replaying it during
2602 * recovery, non zero value will be return if the lock can be canceled,
2603 * or zero returned for not
2605 static int mdc_cancel_weight(struct ldlm_lock *lock)
2607 if (lock->l_resource->lr_type != LDLM_IBITS)
2610 /* FIXME: if we ever get into a situation where there are too many
2611 * opened files with open locks on a single node, then we really
2612 * should replay these open locks to reget it */
2613 if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN)
2619 static int mdc_resource_inode_free(struct ldlm_resource *res)
2621 if (res->lr_lvb_inode)
2622 res->lr_lvb_inode = NULL;
2627 static struct ldlm_valblock_ops inode_lvbo = {
2628 .lvbo_free = mdc_resource_inode_free
2631 static int mdc_llog_init(struct obd_device *obd)
2633 struct obd_llog_group *olg = &obd->obd_olg;
2634 struct llog_ctxt *ctxt;
2639 rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, obd,
2644 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
2645 llog_initiator_connect(ctxt);
2646 llog_ctxt_put(ctxt);
2651 static void mdc_llog_finish(struct obd_device *obd)
2653 struct llog_ctxt *ctxt;
2657 ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
2659 llog_cleanup(NULL, ctxt);
2664 static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
2669 rc = ptlrpcd_addref();
2673 rc = client_obd_setup(obd, cfg);
2675 GOTO(err_ptlrpcd_decref, rc);
2676 #ifdef CONFIG_PROC_FS
2677 obd->obd_vars = lprocfs_mdc_obd_vars;
2678 lprocfs_obd_setup(obd);
2679 lprocfs_alloc_md_stats(obd, 0);
2681 sptlrpc_lprocfs_cliobd_attach(obd);
2682 ptlrpc_lprocfs_register_obd(obd);
2684 ns_register_cancel(obd->obd_namespace, mdc_cancel_weight);
2686 obd->obd_namespace->ns_lvbo = &inode_lvbo;
2688 rc = mdc_llog_init(obd);
2691 CERROR("failed to setup llogging subsystems\n");
2702 /* Initialize the default and maximum LOV EA sizes. This allows
2703 * us to make MDS RPCs with large enough reply buffers to hold a default
2704 * sized EA without having to calculate this (via a call into the
2705 * LOV + OSCs) each time we make an RPC. The maximum size is also tracked
2706 * but not used to avoid wastefully vmalloc()'ing large reply buffers when
2707 * a large number of stripes is possible. If a larger reply buffer is
2708 * required it will be reallocated in the ptlrpc layer due to overflow.
2710 static int mdc_init_ea_size(struct obd_export *exp, __u32 easize,
2713 struct obd_device *obd = exp->exp_obd;
2714 struct client_obd *cli = &obd->u.cli;
2717 if (cli->cl_max_mds_easize < easize)
2718 cli->cl_max_mds_easize = easize;
2720 if (cli->cl_default_mds_easize < def_easize)
2721 cli->cl_default_mds_easize = def_easize;
2726 static int mdc_precleanup(struct obd_device *obd)
2730 /* Failsafe, ok if racy */
2731 if (obd->obd_type->typ_refcnt <= 1)
2732 libcfs_kkuc_group_rem(0, KUC_GRP_HSM);
2734 obd_cleanup_client_import(obd);
2735 ptlrpc_lprocfs_unregister_obd(obd);
2736 lprocfs_obd_cleanup(obd);
2737 lprocfs_free_md_stats(obd);
2738 mdc_llog_finish(obd);
2742 static int mdc_cleanup(struct obd_device *obd)
2746 return client_obd_cleanup(obd);
2749 static int mdc_process_config(struct obd_device *obd, size_t len, void *buf)
2751 struct lustre_cfg *lcfg = buf;
2752 int rc = class_process_proc_param(PARAM_MDC, obd->obd_vars, lcfg, obd);
2753 return (rc > 0 ? 0: rc);
2756 static struct obd_ops mdc_obd_ops = {
2757 .o_owner = THIS_MODULE,
2758 .o_setup = mdc_setup,
2759 .o_precleanup = mdc_precleanup,
2760 .o_cleanup = mdc_cleanup,
2761 .o_add_conn = client_import_add_conn,
2762 .o_del_conn = client_import_del_conn,
2763 .o_connect = client_connect_import,
2764 .o_disconnect = client_disconnect_export,
2765 .o_iocontrol = mdc_iocontrol,
2766 .o_set_info_async = mdc_set_info_async,
2767 .o_statfs = mdc_statfs,
2768 .o_fid_init = client_fid_init,
2769 .o_fid_fini = client_fid_fini,
2770 .o_fid_alloc = mdc_fid_alloc,
2771 .o_import_event = mdc_import_event,
2772 .o_get_info = mdc_get_info,
2773 .o_process_config = mdc_process_config,
2774 .o_get_uuid = mdc_get_uuid,
2775 .o_quotactl = mdc_quotactl,
2778 static struct md_ops mdc_md_ops = {
2779 .m_get_root = mdc_get_root,
2780 .m_null_inode = mdc_null_inode,
2781 .m_close = mdc_close,
2782 .m_create = mdc_create,
2783 .m_enqueue = mdc_enqueue,
2784 .m_getattr = mdc_getattr,
2785 .m_getattr_name = mdc_getattr_name,
2786 .m_intent_lock = mdc_intent_lock,
2788 .m_rename = mdc_rename,
2789 .m_setattr = mdc_setattr,
2790 .m_setxattr = mdc_setxattr,
2791 .m_getxattr = mdc_getxattr,
2792 .m_fsync = mdc_fsync,
2793 .m_read_page = mdc_read_page,
2794 .m_unlink = mdc_unlink,
2795 .m_cancel_unused = mdc_cancel_unused,
2796 .m_init_ea_size = mdc_init_ea_size,
2797 .m_set_lock_data = mdc_set_lock_data,
2798 .m_lock_match = mdc_lock_match,
2799 .m_get_lustre_md = mdc_get_lustre_md,
2800 .m_free_lustre_md = mdc_free_lustre_md,
2801 .m_set_open_replay_data = mdc_set_open_replay_data,
2802 .m_clear_open_replay_data = mdc_clear_open_replay_data,
2803 .m_intent_getattr_async = mdc_intent_getattr_async,
2804 .m_revalidate_lock = mdc_revalidate_lock
2807 static int __init mdc_init(void)
2809 return class_register_type(&mdc_obd_ops, &mdc_md_ops, true, NULL,
2810 LUSTRE_MDC_NAME, NULL);
2813 static void __exit mdc_exit(void)
2815 class_unregister_type(LUSTRE_MDC_NAME);
2818 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
2819 MODULE_DESCRIPTION("Lustre Metadata Client");
2820 MODULE_VERSION(LUSTRE_VERSION_STRING);
2821 MODULE_LICENSE("GPL");
2823 module_init(mdc_init);
2824 module_exit(mdc_exit);