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, 2017, 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/module.h>
38 #include <linux/pagemap.h>
39 #include <linux/user_namespace.h>
40 #include <linux/utsname.h>
41 #include <linux/delay.h>
42 #include <linux/uidgid.h>
44 #include <lustre_errno.h>
46 #include <cl_object.h>
47 #include <llog_swab.h>
48 #include <lprocfs_status.h>
49 #include <lustre_acl.h>
50 #include <lustre_fid.h>
51 #include <uapi/linux/lustre/lustre_ioctl.h>
52 #include <lustre_kernelcomm.h>
53 #include <lustre_lmv.h>
54 #include <lustre_log.h>
55 #include <lustre_swab.h>
56 #include <obd_class.h>
57 #include <lustre_osc.h>
59 #include "mdc_internal.h"
61 #define REQUEST_MINOR 244
63 static int mdc_cleanup(struct obd_device *obd);
65 static inline int mdc_queue_wait(struct ptlrpc_request *req)
67 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
70 /* obd_get_request_slot() ensures that this client has no more
71 * than cl_max_rpcs_in_flight RPCs simultaneously inf light
73 rc = obd_get_request_slot(cli);
77 rc = ptlrpc_queue_wait(req);
78 obd_put_request_slot(cli);
84 * Send MDS_GET_ROOT RPC to fetch root FID.
86 * If \a fileset is not NULL it should contain a subdirectory off
87 * the ROOT/ directory to be mounted on the client. Return the FID
88 * of the subdirectory to the client to mount onto its mountpoint.
90 * \param[in] imp MDC import
91 * \param[in] fileset fileset name, which could be NULL
92 * \param[out] rootfid root FID of this mountpoint
93 * \param[out] pc root capa will be unpacked and saved in this pointer
95 * \retval 0 on success, negative errno on failure
97 static int mdc_get_root(struct obd_export *exp, const char *fileset,
98 struct lu_fid *rootfid)
100 struct ptlrpc_request *req;
101 struct mdt_body *body;
106 if (fileset && !(exp_connect_flags(exp) & OBD_CONNECT_SUBTREE))
109 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
115 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
116 strlen(fileset) + 1);
117 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_ROOT);
119 ptlrpc_request_free(req);
122 mdc_pack_body(req, NULL, 0, 0, -1, 0);
123 if (fileset != NULL) {
124 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
126 memcpy(name, fileset, strlen(fileset));
128 lustre_msg_add_flags(req->rq_reqmsg, LUSTRE_IMP_FULL);
129 req->rq_send_state = LUSTRE_IMP_FULL;
131 ptlrpc_request_set_replen(req);
133 rc = ptlrpc_queue_wait(req);
137 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
139 GOTO(out, rc = -EPROTO);
141 *rootfid = body->mbo_fid1;
142 CDEBUG(D_NET, "root fid="DFID", last_committed=%llu\n",
143 PFID(rootfid), lustre_msg_get_last_committed(req->rq_repmsg));
146 ptlrpc_req_finished(req);
152 * This function now is known to always saying that it will receive 4 buffers
153 * from server. Even for cases when acl_size and md_size is zero, RPC header
154 * will contain 4 fields and RPC itself will contain zero size fields. This is
155 * because mdt_getattr*() _always_ returns 4 fields, but if acl is not needed
156 * and thus zero, it shrinks it, making zero size. The same story about
157 * md_size. And this is course of problem when client waits for smaller number
158 * of fields. This issue will be fixed later when client gets aware of RPC
161 static int mdc_getattr_common(struct obd_export *exp,
162 struct ptlrpc_request *req)
164 struct req_capsule *pill = &req->rq_pill;
165 struct mdt_body *body;
170 /* Request message already built. */
171 rc = ptlrpc_queue_wait(req);
175 /* sanity check for the reply */
176 body = req_capsule_server_get(pill, &RMF_MDT_BODY);
180 CDEBUG(D_NET, "mode: %o\n", body->mbo_mode);
182 mdc_update_max_ea_from_body(exp, body);
183 if (body->mbo_eadatasize != 0) {
184 eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
185 body->mbo_eadatasize);
193 static void mdc_reset_acl_req(struct ptlrpc_request *req)
195 spin_lock(&req->rq_early_free_lock);
196 sptlrpc_cli_free_repbuf(req);
197 req->rq_repbuf = NULL;
198 req->rq_repbuf_len = 0;
199 req->rq_repdata = NULL;
200 req->rq_reqdata_len = 0;
201 spin_unlock(&req->rq_early_free_lock);
204 static int mdc_getattr(struct obd_export *exp, struct md_op_data *op_data,
205 struct ptlrpc_request **request)
207 struct ptlrpc_request *req;
208 struct obd_import *imp = class_exp2cliimp(exp);
209 __u32 acl_bufsize = LUSTRE_POSIX_ACL_MAX_SIZE_OLD;
213 /* Single MDS without an LMV case */
214 if (op_data->op_flags & MF_GET_MDT_IDX) {
220 req = ptlrpc_request_alloc(imp, &RQF_MDS_GETATTR);
224 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
226 ptlrpc_request_free(req);
231 mdc_pack_body(req, &op_data->op_fid1, op_data->op_valid,
232 op_data->op_mode, -1, 0);
233 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER, acl_bufsize);
234 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
236 ptlrpc_request_set_replen(req);
238 rc = mdc_getattr_common(exp, req);
241 acl_bufsize = MIN(imp->imp_connect_data.ocd_max_easize,
243 mdc_reset_acl_req(req);
247 ptlrpc_req_finished(req);
255 static int mdc_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
256 struct ptlrpc_request **request)
258 struct ptlrpc_request *req;
259 struct obd_import *imp = class_exp2cliimp(exp);
260 __u32 acl_bufsize = LUSTRE_POSIX_ACL_MAX_SIZE_OLD;
265 req = ptlrpc_request_alloc(imp, &RQF_MDS_GETATTR_NAME);
269 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
270 op_data->op_namelen + 1);
272 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME);
274 ptlrpc_request_free(req);
278 if (op_data->op_name) {
279 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
280 LASSERT(strnlen(op_data->op_name, op_data->op_namelen) ==
281 op_data->op_namelen);
282 memcpy(name, op_data->op_name, op_data->op_namelen);
286 mdc_pack_body(req, &op_data->op_fid1, op_data->op_valid,
287 op_data->op_mode, op_data->op_suppgids[0], 0);
288 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
290 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER, acl_bufsize);
291 ptlrpc_request_set_replen(req);
293 rc = mdc_getattr_common(exp, req);
296 acl_bufsize = MIN(imp->imp_connect_data.ocd_max_easize,
298 mdc_reset_acl_req(req);
302 ptlrpc_req_finished(req);
310 static int mdc_xattr_common(struct obd_export *exp,const struct req_format *fmt,
311 const struct lu_fid *fid, int opcode, u64 valid,
312 const char *xattr_name, const char *input,
313 int input_size, int output_size, int flags,
314 __u32 suppgid, struct ptlrpc_request **request)
316 struct ptlrpc_request *req;
317 int xattr_namelen = 0;
323 req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
328 xattr_namelen = strlen(xattr_name) + 1;
329 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
334 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
337 /* get SELinux policy info if any */
338 rc = sptlrpc_get_sepol(req);
340 ptlrpc_request_free(req);
343 req_capsule_set_size(&req->rq_pill, &RMF_SELINUX_POL, RCL_CLIENT,
344 strlen(req->rq_sepol) ?
345 strlen(req->rq_sepol) + 1 : 0);
347 /* Flush local XATTR locks to get rid of a possible cancel RPC */
348 if (opcode == MDS_REINT && fid_is_sane(fid) &&
349 exp->exp_connect_data.ocd_ibits_known & MDS_INODELOCK_XATTR) {
353 /* Without that packing would fail */
355 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
358 count = mdc_resource_get_unused(exp, fid,
360 MDS_INODELOCK_XATTR);
362 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
364 ptlrpc_request_free(req);
368 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
370 ptlrpc_request_free(req);
375 if (opcode == MDS_REINT) {
376 struct mdt_rec_setxattr *rec;
378 BUILD_BUG_ON(sizeof(struct mdt_rec_setxattr) !=
379 sizeof(struct mdt_rec_reint));
380 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
381 rec->sx_opcode = REINT_SETXATTR;
382 rec->sx_fsuid = from_kuid(&init_user_ns, current_fsuid());
383 rec->sx_fsgid = from_kgid(&init_user_ns, current_fsgid());
384 rec->sx_cap = cfs_curproc_cap_pack();
385 rec->sx_suppgid1 = suppgid;
386 rec->sx_suppgid2 = -1;
388 rec->sx_valid = valid | OBD_MD_FLCTIME;
389 rec->sx_time = ktime_get_real_seconds();
390 rec->sx_size = output_size;
391 rec->sx_flags = flags;
393 mdc_pack_body(req, fid, valid, output_size, suppgid, flags);
397 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
398 memcpy(tmp, xattr_name, xattr_namelen);
401 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
402 memcpy(tmp, input, input_size);
405 mdc_file_sepol_pack(req);
407 if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
408 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
409 RCL_SERVER, output_size);
410 ptlrpc_request_set_replen(req);
413 if (opcode == MDS_REINT)
414 ptlrpc_get_mod_rpc_slot(req);
416 rc = ptlrpc_queue_wait(req);
418 if (opcode == MDS_REINT)
419 ptlrpc_put_mod_rpc_slot(req);
422 ptlrpc_req_finished(req);
428 static int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
429 u64 obd_md_valid, const char *name,
430 const void *value, size_t value_size,
431 unsigned int xattr_flags, u32 suppgid,
432 struct ptlrpc_request **req)
434 LASSERT(obd_md_valid == OBD_MD_FLXATTR ||
435 obd_md_valid == OBD_MD_FLXATTRRM);
437 return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
438 fid, MDS_REINT, obd_md_valid, name,
439 value, value_size, 0, xattr_flags, suppgid,
443 static int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
444 u64 obd_md_valid, const char *name, size_t buf_size,
445 struct ptlrpc_request **req)
447 struct mdt_body *body;
450 LASSERT(obd_md_valid == OBD_MD_FLXATTR ||
451 obd_md_valid == OBD_MD_FLXATTRLS);
453 /* The below message is checked in sanity-selinux.sh test_20d */
454 CDEBUG(D_INFO, "%s: get xattr '%s' for "DFID"\n",
455 exp->exp_obd->obd_name, name, PFID(fid));
456 rc = mdc_xattr_common(exp, &RQF_MDS_GETXATTR, fid, MDS_GETXATTR,
457 obd_md_valid, name, NULL, 0, buf_size, 0, -1,
462 body = req_capsule_server_get(&(*req)->rq_pill, &RMF_MDT_BODY);
464 GOTO(out, rc = -EPROTO);
466 /* only detect the xattr size */
468 /* LU-11109: Older MDTs do not distinguish
469 * between nonexistent xattrs and zero length
470 * values in this case. Newer MDTs will return
471 * -ENODATA or set OBD_MD_FLXATTR. */
472 GOTO(out, rc = body->mbo_eadatasize);
475 if (body->mbo_eadatasize == 0) {
476 /* LU-11109: Newer MDTs set OBD_MD_FLXATTR on
477 * success so that we can distinguish between
478 * zero length value and nonexistent xattr.
480 * If OBD_MD_FLXATTR is not set then we keep
481 * the old behavior and return -ENODATA for
482 * getxattr() when mbo_eadatasize is 0. But
483 * -ENODATA only makes sense for getxattr()
484 * and not for listxattr(). */
485 if (body->mbo_valid & OBD_MD_FLXATTR)
487 else if (obd_md_valid == OBD_MD_FLXATTR)
488 GOTO(out, rc = -ENODATA);
493 GOTO(out, rc = body->mbo_eadatasize);
496 ptlrpc_req_finished(*req);
503 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
504 static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
506 struct req_capsule *pill = &req->rq_pill;
507 struct mdt_body *body = md->body;
508 struct posix_acl *acl;
513 if (!body->mbo_aclsize)
516 buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->mbo_aclsize);
521 acl = posix_acl_from_xattr(&init_user_ns, buf, body->mbo_aclsize);
526 CERROR("convert xattr to acl: %d\n", rc);
530 rc = posix_acl_valid(&init_user_ns, acl);
532 CERROR("validate acl: %d\n", rc);
533 posix_acl_release(acl);
541 #define mdc_unpack_acl(req, md) 0
544 int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
545 struct obd_export *dt_exp, struct obd_export *md_exp,
546 struct lustre_md *md)
548 struct req_capsule *pill = &req->rq_pill;
553 memset(md, 0, sizeof(*md));
555 md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
556 LASSERT(md->body != NULL);
558 if (md->body->mbo_valid & OBD_MD_FLEASIZE) {
559 if (!S_ISREG(md->body->mbo_mode)) {
560 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
561 "regular file, but is not\n");
562 GOTO(out, rc = -EPROTO);
565 if (md->body->mbo_eadatasize == 0) {
566 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
567 "but eadatasize 0\n");
568 GOTO(out, rc = -EPROTO);
571 md->layout.lb_len = md->body->mbo_eadatasize;
572 md->layout.lb_buf = req_capsule_server_sized_get(pill,
575 if (md->layout.lb_buf == NULL)
576 GOTO(out, rc = -EPROTO);
577 } else if (md->body->mbo_valid & OBD_MD_FLDIREA) {
578 const union lmv_mds_md *lmv;
581 if (!S_ISDIR(md->body->mbo_mode)) {
582 CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
583 "directory, but is not\n");
584 GOTO(out, rc = -EPROTO);
587 if (md->body->mbo_valid & OBD_MD_MEA) {
588 lmv_size = md->body->mbo_eadatasize;
590 CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
591 "but eadatasize 0\n");
595 lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
598 GOTO(out, rc = -EPROTO);
600 rc = md_unpackmd(md_exp, &md->lmv, lmv, lmv_size);
604 if (rc < (int)sizeof(*md->lmv)) {
605 struct lmv_foreign_md *lfm = md->lfm;
607 /* short (< sizeof(struct lmv_stripe_md))
610 if (lfm->lfm_magic != LMV_MAGIC_FOREIGN) {
612 "lmv size too small: %d < %d\n",
613 rc, (int)sizeof(*md->lmv));
614 GOTO(out, rc = -EPROTO);
619 /* since 2.12.58 intent_getattr fetches default LMV */
620 if (md->body->mbo_valid & OBD_MD_DEFAULT_MEA) {
621 lmv_size = sizeof(struct lmv_user_md);
622 lmv = req_capsule_server_sized_get(pill,
626 GOTO(out, rc = -EPROTO);
628 rc = md_unpackmd(md_exp, &md->default_lmv, lmv,
633 if (rc < (int)sizeof(*md->default_lmv)) {
635 "default lmv size too small: %d < %d\n",
636 rc, (int)sizeof(*md->default_lmv));
637 GOTO(out, rc = -EPROTO);
643 if (md->body->mbo_valid & OBD_MD_FLACL) {
644 /* for ACL, it's possible that FLACL is set but aclsize is zero.
645 * only when aclsize != 0 there's an actual segment for ACL
648 if (md->body->mbo_aclsize) {
649 rc = mdc_unpack_acl(req, md);
652 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
654 md->posix_acl = NULL;
662 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
663 posix_acl_release(md->posix_acl);
669 int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
675 void mdc_replay_open(struct ptlrpc_request *req)
677 struct md_open_data *mod = req->rq_cb_data;
678 struct ptlrpc_request *close_req;
679 struct obd_client_handle *och;
680 struct lustre_handle old_open_handle = { };
681 struct mdt_body *body;
685 DEBUG_REQ(D_ERROR, req,
686 "cannot properly replay without open data");
691 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
692 LASSERT(body != NULL);
694 spin_lock(&req->rq_lock);
696 if (och && och->och_open_handle.cookie)
697 req->rq_early_free_repbuf = 1;
699 req->rq_early_free_repbuf = 0;
700 spin_unlock(&req->rq_lock);
702 if (req->rq_early_free_repbuf) {
703 struct lustre_handle *file_open_handle;
705 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
707 file_open_handle = &och->och_open_handle;
708 CDEBUG(D_HA, "updating handle from %#llx to %#llx\n",
709 file_open_handle->cookie, body->mbo_open_handle.cookie);
710 old_open_handle = *file_open_handle;
711 *file_open_handle = body->mbo_open_handle;
714 close_req = mod->mod_close_req;
716 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
717 struct mdt_ioepoch *epoch;
719 LASSERT(opc == MDS_CLOSE);
720 epoch = req_capsule_client_get(&close_req->rq_pill,
724 if (req->rq_early_free_repbuf)
725 LASSERT(old_open_handle.cookie ==
726 epoch->mio_open_handle.cookie);
728 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
729 epoch->mio_open_handle = body->mbo_open_handle;
734 void mdc_commit_open(struct ptlrpc_request *req)
736 struct md_open_data *mod = req->rq_cb_data;
741 * No need to touch md_open_data::mod_och, it holds a reference on
742 * \var mod and will zero references to each other, \var mod will be
743 * freed after that when md_open_data::mod_och will put the reference.
747 * Do not let open request to disappear as it still may be needed
748 * for close rpc to happen (it may happen on evict only, otherwise
749 * ptlrpc_request::rq_replay does not let mdc_commit_open() to be
750 * called), just mark this rpc as committed to distinguish these 2
751 * cases, see mdc_close() for details. The open request reference will
752 * be put along with freeing \var mod.
754 ptlrpc_request_addref(req);
755 spin_lock(&req->rq_lock);
756 req->rq_committed = 1;
757 spin_unlock(&req->rq_lock);
758 req->rq_cb_data = NULL;
762 int mdc_set_open_replay_data(struct obd_export *exp,
763 struct obd_client_handle *och,
764 struct lookup_intent *it)
766 struct md_open_data *mod;
767 struct mdt_rec_create *rec;
768 struct mdt_body *body;
769 struct ptlrpc_request *open_req = it->it_request;
770 struct obd_import *imp = open_req->rq_import;
773 if (!open_req->rq_replay)
776 rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
777 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
778 LASSERT(rec != NULL);
779 /* Incoming message in my byte order (it's been swabbed). */
780 /* Outgoing messages always in my byte order. */
781 LASSERT(body != NULL);
783 /* Only if the import is replayable, we set replay_open data */
784 if (och && imp->imp_replayable) {
785 mod = obd_mod_alloc();
787 DEBUG_REQ(D_ERROR, open_req,
788 "cannot allocate md_open_data");
793 * Take a reference on \var mod, to be freed on mdc_close().
794 * It protects \var mod from being freed on eviction (commit
795 * callback is called despite rq_replay flag).
796 * Another reference for \var och.
801 spin_lock(&open_req->rq_lock);
804 mod->mod_is_create = it_disposition(it, DISP_OPEN_CREATE) ||
805 it_disposition(it, DISP_OPEN_STRIPE);
806 mod->mod_open_req = open_req;
807 open_req->rq_cb_data = mod;
808 open_req->rq_commit_cb = mdc_commit_open;
809 open_req->rq_early_free_repbuf = 1;
810 spin_unlock(&open_req->rq_lock);
813 rec->cr_fid2 = body->mbo_fid1;
814 rec->cr_open_handle_old = body->mbo_open_handle;
815 open_req->rq_replay_cb = mdc_replay_open;
816 if (!fid_is_sane(&body->mbo_fid1)) {
817 DEBUG_REQ(D_ERROR, open_req,
818 "saving replay request with insane FID " DFID,
819 PFID(&body->mbo_fid1));
823 DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
827 static void mdc_free_open(struct md_open_data *mod)
831 if (mod->mod_is_create == 0 &&
832 imp_connect_disp_stripe(mod->mod_open_req->rq_import))
836 * No reason to asssert here if the open request has
837 * rq_replay == 1. It means that mdc_close failed, and
838 * close request wasn`t sent. It is not fatal to client.
839 * The worst thing is eviction if the client gets open lock
842 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req,
843 "free open request, rq_replay=%d",
844 mod->mod_open_req->rq_replay);
846 ptlrpc_request_committed(mod->mod_open_req, committed);
847 if (mod->mod_close_req)
848 ptlrpc_request_committed(mod->mod_close_req, committed);
851 int mdc_clear_open_replay_data(struct obd_export *exp,
852 struct obd_client_handle *och)
854 struct md_open_data *mod = och->och_mod;
858 * It is possible to not have \var mod in a case of eviction between
859 * lookup and ll_file_open().
864 LASSERT(mod != LP_POISON);
865 LASSERT(mod->mod_open_req != NULL);
867 spin_lock(&mod->mod_open_req->rq_lock);
869 mod->mod_och->och_open_handle.cookie = 0;
870 mod->mod_open_req->rq_early_free_repbuf = 0;
871 spin_unlock(&mod->mod_open_req->rq_lock);
881 static int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
882 struct md_open_data *mod, struct ptlrpc_request **request)
884 struct obd_device *obd = class_exp2obd(exp);
885 struct ptlrpc_request *req;
886 struct req_format *req_fmt;
887 size_t u32_count = 0;
892 CDEBUG(D_INODE, "%s: "DFID" file closed with intent: %x\n",
893 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
896 if (op_data->op_bias & MDS_CLOSE_INTENT) {
897 req_fmt = &RQF_MDS_CLOSE_INTENT;
898 if (op_data->op_bias & MDS_HSM_RELEASE) {
899 /* allocate a FID for volatile file */
900 rc = mdc_fid_alloc(NULL, exp, &op_data->op_fid2,
903 CERROR("%s: "DFID" allocating FID: rc = %d\n",
904 obd->obd_name, PFID(&op_data->op_fid1),
906 /* save the errcode and proceed to close */
910 if (op_data->op_bias & MDS_CLOSE_RESYNC_DONE) {
911 size_t count = op_data->op_data_size / sizeof(__u32);
913 if (count > INLINE_RESYNC_ARRAY_SIZE)
917 req_fmt = &RQF_MDS_CLOSE;
921 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_CLOSE))
924 req = ptlrpc_request_alloc(class_exp2cliimp(exp), req_fmt);
926 /* Ensure that this close's handle is fixed up during replay. */
927 if (likely(mod != NULL)) {
928 LASSERTF(mod->mod_open_req != NULL &&
929 mod->mod_open_req->rq_type != LI_POISON,
930 "POISONED open %p!\n", mod->mod_open_req);
932 mod->mod_close_req = req;
934 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req, "matched open");
935 /* We no longer want to preserve this open for replay even
936 * though the open was committed. b=3632, b=3633 */
937 spin_lock(&mod->mod_open_req->rq_lock);
938 mod->mod_open_req->rq_replay = 0;
939 spin_unlock(&mod->mod_open_req->rq_lock);
941 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
945 * TODO: repeat close after errors
947 CWARN("%s: close of FID "DFID" failed, file reference will be "
948 "dropped when this client unmounts or is evicted\n",
949 obd->obd_name, PFID(&op_data->op_fid1));
950 GOTO(out, rc = -ENOMEM);
954 req_capsule_set_size(&req->rq_pill, &RMF_U32, RCL_CLIENT,
955 u32_count * sizeof(__u32));
957 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
959 ptlrpc_request_free(req);
964 /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
965 * portal whose threads are not taking any DLM locks and are therefore
966 * always progressing */
967 req->rq_request_portal = MDS_READPAGE_PORTAL;
968 ptlrpc_at_set_req_timeout(req);
970 if (!(exp_connect_flags2(exp) & OBD_CONNECT2_LSOM))
971 op_data->op_xvalid &= ~(OP_XVALID_LAZYSIZE |
972 OP_XVALID_LAZYBLOCKS);
974 mdc_close_pack(req, op_data);
976 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
977 obd->u.cli.cl_default_mds_easize);
979 ptlrpc_request_set_replen(req);
981 ptlrpc_get_mod_rpc_slot(req);
982 rc = ptlrpc_queue_wait(req);
983 ptlrpc_put_mod_rpc_slot(req);
985 if (req->rq_repmsg == NULL) {
986 CDEBUG(D_RPCTRACE, "request %p failed to send: rc = %d\n", req,
989 rc = req->rq_status ?: -EIO;
990 } else if (rc == 0 || rc == -EAGAIN) {
991 struct mdt_body *body;
993 rc = lustre_msg_get_status(req->rq_repmsg);
994 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
995 DEBUG_REQ(D_ERROR, req,
996 "type = PTL_RPC_MSG_ERR: rc = %d", rc);
1000 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1003 } else if (rc == -ESTALE) {
1005 * it can be allowed error after 3633 if open was committed and
1006 * server failed before close was sent. Let's check if mod
1007 * exists and return no error in that case
1010 DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc);
1011 LASSERT(mod->mod_open_req != NULL);
1012 if (mod->mod_open_req->rq_committed)
1020 mod->mod_close_req = NULL;
1021 /* Since now, mod is accessed through open_req only,
1022 * thus close req does not keep a reference on mod anymore. */
1027 RETURN(rc < 0 ? rc : saved_rc);
1030 static int mdc_getpage(struct obd_export *exp, const struct lu_fid *fid,
1031 u64 offset, struct page **pages, int npages,
1032 struct ptlrpc_request **request)
1034 struct ptlrpc_request *req;
1035 struct ptlrpc_bulk_desc *desc;
1044 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
1048 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
1050 ptlrpc_request_free(req);
1054 req->rq_request_portal = MDS_READPAGE_PORTAL;
1055 ptlrpc_at_set_req_timeout(req);
1057 desc = ptlrpc_prep_bulk_imp(req, npages, 1,
1058 PTLRPC_BULK_PUT_SINK | PTLRPC_BULK_BUF_KIOV,
1060 &ptlrpc_bulk_kiov_pin_ops);
1062 ptlrpc_req_finished(req);
1066 /* NB req now owns desc and will free it when it gets freed */
1067 for (i = 0; i < npages; i++)
1068 desc->bd_frag_ops->add_kiov_frag(desc, pages[i], 0,
1071 mdc_readdir_pack(req, offset, PAGE_SIZE * npages, fid);
1073 ptlrpc_request_set_replen(req);
1074 rc = ptlrpc_queue_wait(req);
1076 ptlrpc_req_finished(req);
1077 if (rc != -ETIMEDOUT)
1081 if (!client_should_resend(resends, &exp->exp_obd->u.cli)) {
1082 CERROR("%s: too many resend retries: rc = %d\n",
1083 exp->exp_obd->obd_name, -EIO);
1091 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
1092 req->rq_bulk->bd_nob_transferred);
1094 ptlrpc_req_finished(req);
1098 if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) {
1099 CERROR("%s: unexpected bytes transferred: %d (%ld expected)\n",
1100 exp->exp_obd->obd_name, req->rq_bulk->bd_nob_transferred,
1101 PAGE_SIZE * npages);
1102 ptlrpc_req_finished(req);
1110 static void mdc_release_page(struct page *page, int remove)
1114 if (likely(page->mapping != NULL))
1115 delete_from_page_cache(page);
1121 static struct page *mdc_page_locate(struct address_space *mapping, __u64 *hash,
1122 __u64 *start, __u64 *end, int hash64)
1125 * Complement of hash is used as an index so that
1126 * radix_tree_gang_lookup() can be used to find a page with starting
1127 * hash _smaller_ than one we are looking for.
1129 unsigned long offset = hash_x_index(*hash, hash64);
1131 unsigned long flags;
1134 xa_lock_irqsave(&mapping->i_pages, flags);
1135 found = radix_tree_gang_lookup(&mapping->page_tree,
1136 (void **)&page, offset, 1);
1137 if (found > 0 && !radix_tree_exceptional_entry(page)) {
1138 struct lu_dirpage *dp;
1141 xa_unlock_irqrestore(&mapping->i_pages, flags);
1143 * In contrast to find_lock_page() we are sure that directory
1144 * page cannot be truncated (while DLM lock is held) and,
1145 * hence, can avoid restart.
1147 * In fact, page cannot be locked here at all, because
1148 * mdc_read_page_remote does synchronous io.
1150 wait_on_page_locked(page);
1151 if (PageUptodate(page)) {
1153 if (BITS_PER_LONG == 32 && hash64) {
1154 *start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1155 *end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1156 *hash = *hash >> 32;
1158 *start = le64_to_cpu(dp->ldp_hash_start);
1159 *end = le64_to_cpu(dp->ldp_hash_end);
1161 if (unlikely(*start == 1 && *hash == 0))
1164 LASSERTF(*start <= *hash, "start = %#llx"
1165 ",end = %#llx,hash = %#llx\n",
1166 *start, *end, *hash);
1167 CDEBUG(D_VFSTRACE, "offset %lx [%#llx %#llx],"
1168 " hash %#llx\n", offset, *start, *end, *hash);
1171 mdc_release_page(page, 0);
1173 } else if (*end != *start && *hash == *end) {
1175 * upon hash collision, remove this page,
1176 * otherwise put page reference, and
1177 * mdc_read_page_remote() will issue RPC to
1178 * fetch the page we want.
1181 mdc_release_page(page,
1182 le32_to_cpu(dp->ldp_flags) & LDF_COLLIDE);
1187 page = ERR_PTR(-EIO);
1190 xa_unlock_irqrestore(&mapping->i_pages, flags);
1197 * Adjust a set of pages, each page containing an array of lu_dirpages,
1198 * so that each page can be used as a single logical lu_dirpage.
1200 * A lu_dirpage is laid out as follows, where s = ldp_hash_start,
1201 * e = ldp_hash_end, f = ldp_flags, p = padding, and each "ent" is a
1202 * struct lu_dirent. It has size up to LU_PAGE_SIZE. The ldp_hash_end
1203 * value is used as a cookie to request the next lu_dirpage in a
1204 * directory listing that spans multiple pages (two in this example):
1207 * .|--------v------- -----.
1208 * |s|e|f|p|ent|ent| ... |ent|
1209 * '--|-------------- -----' Each PAGE contains a single
1210 * '------. lu_dirpage.
1211 * .---------v------- -----.
1212 * |s|e|f|p|ent| 0 | ... | 0 |
1213 * '----------------- -----'
1215 * However, on hosts where the native VM page size (PAGE_SIZE) is
1216 * larger than LU_PAGE_SIZE, a single host page may contain multiple
1217 * lu_dirpages. After reading the lu_dirpages from the MDS, the
1218 * ldp_hash_end of the first lu_dirpage refers to the one immediately
1219 * after it in the same PAGE (arrows simplified for brevity, but
1220 * in general e0==s1, e1==s2, etc.):
1222 * .-------------------- -----.
1223 * |s0|e0|f0|p|ent|ent| ... |ent|
1224 * |---v---------------- -----|
1225 * |s1|e1|f1|p|ent|ent| ... |ent|
1226 * |---v---------------- -----| Here, each PAGE contains
1227 * ... multiple lu_dirpages.
1228 * |---v---------------- -----|
1229 * |s'|e'|f'|p|ent|ent| ... |ent|
1230 * '---|---------------- -----'
1232 * .----------------------------.
1235 * This structure is transformed into a single logical lu_dirpage as follows:
1237 * - Replace e0 with e' so the request for the next lu_dirpage gets the page
1238 * labeled 'next PAGE'.
1240 * - Copy the LDF_COLLIDE flag from f' to f0 to correctly reflect whether
1241 * a hash collision with the next page exists.
1243 * - Adjust the lde_reclen of the ending entry of each lu_dirpage to span
1244 * to the first entry of the next lu_dirpage.
1246 #if PAGE_SIZE > LU_PAGE_SIZE
1247 static void mdc_adjust_dirpages(struct page **pages, int cfs_pgs, int lu_pgs)
1251 for (i = 0; i < cfs_pgs; i++) {
1252 struct lu_dirpage *dp = kmap(pages[i]);
1253 struct lu_dirpage *first = dp;
1254 struct lu_dirent *end_dirent = NULL;
1255 struct lu_dirent *ent;
1256 __u64 hash_end = dp->ldp_hash_end;
1257 __u32 flags = dp->ldp_flags;
1259 while (--lu_pgs > 0) {
1260 ent = lu_dirent_start(dp);
1261 for (end_dirent = ent; ent != NULL;
1262 end_dirent = ent, ent = lu_dirent_next(ent));
1264 /* Advance dp to next lu_dirpage. */
1265 dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE);
1267 /* Check if we've reached the end of the PAGE. */
1268 if (!((unsigned long)dp & ~PAGE_MASK))
1271 /* Save the hash and flags of this lu_dirpage. */
1272 hash_end = dp->ldp_hash_end;
1273 flags = dp->ldp_flags;
1275 /* Check if lu_dirpage contains no entries. */
1276 if (end_dirent == NULL)
1279 /* Enlarge the end entry lde_reclen from 0 to
1280 * first entry of next lu_dirpage. */
1281 LASSERT(le16_to_cpu(end_dirent->lde_reclen) == 0);
1282 end_dirent->lde_reclen =
1283 cpu_to_le16((char *)(dp->ldp_entries) -
1284 (char *)end_dirent);
1287 first->ldp_hash_end = hash_end;
1288 first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE);
1289 first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE);
1293 LASSERTF(lu_pgs == 0, "left = %d\n", lu_pgs);
1296 #define mdc_adjust_dirpages(pages, cfs_pgs, lu_pgs) do {} while (0)
1297 #endif /* PAGE_SIZE > LU_PAGE_SIZE */
1299 /* parameters for readdir page */
1300 struct readpage_param {
1301 struct md_op_data *rp_mod;
1304 struct obd_export *rp_exp;
1305 struct md_callback *rp_cb;
1309 * Read pages from server.
1311 * Page in MDS_READPAGE RPC is packed in LU_PAGE_SIZE, and each page contains
1312 * a header lu_dirpage which describes the start/end hash, and whether this
1313 * page is empty (contains no dir entry) or hash collide with next page.
1314 * After client receives reply, several pages will be integrated into dir page
1315 * in PAGE_SIZE (if PAGE_SIZE greater than LU_PAGE_SIZE), and the
1316 * lu_dirpage for this integrated page will be adjusted.
1318 static int mdc_read_page_remote(void *data, struct page *page0)
1320 struct readpage_param *rp = data;
1321 struct page **page_pool;
1323 struct lu_dirpage *dp;
1324 struct md_op_data *op_data = rp->rp_mod;
1325 struct ptlrpc_request *req;
1327 struct inode *inode;
1329 int rd_pgs = 0; /* number of pages actually read */
1335 max_pages = rp->rp_exp->exp_obd->u.cli.cl_max_pages_per_rpc;
1336 inode = op_data->op_data;
1337 fid = &op_data->op_fid1;
1338 LASSERT(inode != NULL);
1340 OBD_ALLOC(page_pool, sizeof(page_pool[0]) * max_pages);
1341 if (page_pool != NULL) {
1342 page_pool[0] = page0;
1348 for (npages = 1; npages < max_pages; npages++) {
1349 page = __page_cache_alloc(mapping_gfp_mask(inode->i_mapping)
1353 page_pool[npages] = page;
1356 rc = mdc_getpage(rp->rp_exp, fid, rp->rp_off, page_pool, npages, &req);
1358 /* page0 is special, which was added into page cache early */
1359 delete_from_page_cache(page0);
1363 rd_pgs = (req->rq_bulk->bd_nob_transferred + PAGE_SIZE - 1) >>
1365 lu_pgs = req->rq_bulk->bd_nob_transferred >> LU_PAGE_SHIFT;
1366 LASSERT(!(req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK));
1368 CDEBUG(D_INODE, "read %d(%d) pages\n", rd_pgs, lu_pgs);
1370 mdc_adjust_dirpages(page_pool, rd_pgs, lu_pgs);
1372 SetPageUptodate(page0);
1376 ptlrpc_req_finished(req);
1377 CDEBUG(D_CACHE, "read %d/%d pages\n", rd_pgs, npages);
1378 for (i = 1; i < npages; i++) {
1379 unsigned long offset;
1383 page = page_pool[i];
1385 if (rc < 0 || i >= rd_pgs) {
1390 SetPageUptodate(page);
1393 hash = le64_to_cpu(dp->ldp_hash_start);
1396 offset = hash_x_index(hash, rp->rp_hash64);
1398 prefetchw(&page->flags);
1399 ret = add_to_page_cache_lru(page, inode->i_mapping, offset,
1404 CDEBUG(D_VFSTRACE, "page %lu add to page cache failed:"
1405 " rc = %d\n", offset, ret);
1409 if (page_pool != &page0)
1410 OBD_FREE(page_pool, sizeof(page_pool[0]) * max_pages);
1416 * Read dir page from cache first, if it can not find it, read it from
1417 * server and add into the cache.
1419 * \param[in] exp MDC export
1420 * \param[in] op_data client MD stack parameters, transfering parameters
1421 * between different layers on client MD stack.
1422 * \param[in] cb_op callback required for ldlm lock enqueue during
1424 * \param[in] hash_offset the hash offset of the page to be read
1425 * \param[in] ppage the page to be read
1427 * retval = 0 get the page successfully
1428 * errno(<0) get the page failed
1430 static int mdc_read_page(struct obd_export *exp, struct md_op_data *op_data,
1431 struct md_callback *cb_op, __u64 hash_offset,
1432 struct page **ppage)
1434 struct lookup_intent it = { .it_op = IT_READDIR };
1436 struct inode *dir = op_data->op_data;
1437 struct address_space *mapping;
1438 struct lu_dirpage *dp;
1441 struct lustre_handle lockh;
1442 struct ptlrpc_request *enq_req = NULL;
1443 struct readpage_param rp_param;
1450 LASSERT(dir != NULL);
1451 mapping = dir->i_mapping;
1453 rc = mdc_intent_lock(exp, op_data, &it, &enq_req,
1454 cb_op->md_blocking_ast, 0);
1455 if (enq_req != NULL)
1456 ptlrpc_req_finished(enq_req);
1459 CERROR("%s: "DFID" lock enqueue fails: rc = %d\n",
1460 exp->exp_obd->obd_name, PFID(&op_data->op_fid1), rc);
1465 lockh.cookie = it.it_lock_handle;
1466 mdc_set_lock_data(exp, &lockh, dir, NULL);
1468 rp_param.rp_off = hash_offset;
1469 rp_param.rp_hash64 = op_data->op_cli_flags & CLI_HASH64;
1470 page = mdc_page_locate(mapping, &rp_param.rp_off, &start, &end,
1471 rp_param.rp_hash64);
1473 CERROR("%s: dir page locate: "DFID" at %llu: rc %ld\n",
1474 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1475 rp_param.rp_off, PTR_ERR(page));
1476 GOTO(out_unlock, rc = PTR_ERR(page));
1477 } else if (page != NULL) {
1479 * XXX nikita: not entirely correct handling of a corner case:
1480 * suppose hash chain of entries with hash value HASH crosses
1481 * border between pages P0 and P1. First both P0 and P1 are
1482 * cached, seekdir() is called for some entry from the P0 part
1483 * of the chain. Later P0 goes out of cache. telldir(HASH)
1484 * happens and finds P1, as it starts with matching hash
1485 * value. Remaining entries from P0 part of the chain are
1486 * skipped. (Is that really a bug?)
1488 * Possible solutions: 0. don't cache P1 is such case, handle
1489 * it as an "overflow" page. 1. invalidate all pages at
1490 * once. 2. use HASH|1 as an index for P1.
1492 GOTO(hash_collision, page);
1495 rp_param.rp_exp = exp;
1496 rp_param.rp_mod = op_data;
1497 page = read_cache_page(mapping,
1498 hash_x_index(rp_param.rp_off,
1499 rp_param.rp_hash64),
1500 mdc_read_page_remote, &rp_param);
1502 CDEBUG(D_INFO, "%s: read cache page: "DFID" at %llu: %ld\n",
1503 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1504 rp_param.rp_off, PTR_ERR(page));
1505 GOTO(out_unlock, rc = PTR_ERR(page));
1508 wait_on_page_locked(page);
1510 if (!PageUptodate(page)) {
1511 CERROR("%s: page not updated: "DFID" at %llu: rc %d\n",
1512 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1513 rp_param.rp_off, -5);
1516 if (!PageChecked(page))
1517 SetPageChecked(page);
1518 if (PageError(page)) {
1519 CERROR("%s: page error: "DFID" at %llu: rc %d\n",
1520 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1521 rp_param.rp_off, -5);
1526 dp = page_address(page);
1527 if (BITS_PER_LONG == 32 && rp_param.rp_hash64) {
1528 start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1529 end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1530 rp_param.rp_off = hash_offset >> 32;
1532 start = le64_to_cpu(dp->ldp_hash_start);
1533 end = le64_to_cpu(dp->ldp_hash_end);
1534 rp_param.rp_off = hash_offset;
1537 LASSERT(start == rp_param.rp_off);
1538 CWARN("Page-wide hash collision: %#lx\n", (unsigned long)end);
1539 #if BITS_PER_LONG == 32
1540 CWARN("Real page-wide hash collision at [%llu %llu] with "
1541 "hash %llu\n", le64_to_cpu(dp->ldp_hash_start),
1542 le64_to_cpu(dp->ldp_hash_end), hash_offset);
1546 * Fetch whole overflow chain...
1554 ldlm_lock_decref(&lockh, it.it_lock_mode);
1558 mdc_release_page(page, 1);
1563 static int mdc_statfs_interpret(const struct lu_env *env,
1564 struct ptlrpc_request *req, void *args, int rc)
1566 struct obd_info *oinfo = args;
1567 struct obd_statfs *osfs;
1570 osfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1574 oinfo->oi_osfs = osfs;
1576 CDEBUG(D_CACHE, "blocks=%llu free=%llu avail=%llu "
1577 "objects=%llu free=%llu state=%x\n",
1578 osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
1579 osfs->os_files, osfs->os_ffree, osfs->os_state);
1582 oinfo->oi_cb_up(oinfo, rc);
1587 static int mdc_statfs_async(struct obd_export *exp,
1588 struct obd_info *oinfo, time64_t max_age,
1589 struct ptlrpc_request_set *unused)
1591 struct ptlrpc_request *req;
1592 struct obd_info *aa;
1594 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_STATFS,
1595 LUSTRE_MDS_VERSION, MDS_STATFS);
1599 ptlrpc_request_set_replen(req);
1600 req->rq_interpret_reply = mdc_statfs_interpret;
1602 aa = ptlrpc_req_async_args(aa, req);
1605 ptlrpcd_add_req(req);
1610 static int mdc_statfs(const struct lu_env *env,
1611 struct obd_export *exp, struct obd_statfs *osfs,
1612 time64_t max_age, __u32 flags)
1614 struct obd_device *obd = class_exp2obd(exp);
1615 struct req_format *fmt;
1616 struct ptlrpc_request *req;
1617 struct obd_statfs *msfs;
1618 struct obd_import *imp = NULL;
1623 * Since the request might also come from lprocfs, so we need
1624 * sync this with client_disconnect_export Bug15684
1626 down_read(&obd->u.cli.cl_sem);
1627 if (obd->u.cli.cl_import)
1628 imp = class_import_get(obd->u.cli.cl_import);
1629 up_read(&obd->u.cli.cl_sem);
1633 fmt = &RQF_MDS_STATFS;
1634 if ((exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS) &&
1635 (flags & OBD_STATFS_SUM))
1636 fmt = &RQF_MDS_STATFS_NEW;
1637 req = ptlrpc_request_alloc_pack(imp, fmt, LUSTRE_MDS_VERSION,
1640 GOTO(output, rc = -ENOMEM);
1642 if ((flags & OBD_STATFS_SUM) &&
1643 (exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS)) {
1644 /* request aggregated states */
1645 struct mdt_body *body;
1647 body = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
1649 GOTO(out, rc = -EPROTO);
1650 body->mbo_valid = OBD_MD_FLAGSTATFS;
1653 ptlrpc_request_set_replen(req);
1655 if (flags & OBD_STATFS_NODELAY) {
1656 /* procfs requests not want stay in wait for avoid deadlock */
1657 req->rq_no_resend = 1;
1658 req->rq_no_delay = 1;
1661 rc = ptlrpc_queue_wait(req);
1663 /* check connection error first */
1664 if (imp->imp_connect_error)
1665 rc = imp->imp_connect_error;
1669 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1671 GOTO(out, rc = -EPROTO);
1676 ptlrpc_req_finished(req);
1678 class_import_put(imp);
1682 static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
1684 __u32 keylen, vallen;
1688 if (gf->gf_pathlen > PATH_MAX)
1689 RETURN(-ENAMETOOLONG);
1690 if (gf->gf_pathlen < 2)
1693 /* Key is KEY_FID2PATH + getinfo_fid2path description */
1694 keylen = cfs_size_round(sizeof(KEY_FID2PATH) + sizeof(*gf) +
1695 sizeof(struct lu_fid));
1696 OBD_ALLOC(key, keylen);
1699 memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
1700 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
1701 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf),
1702 gf->gf_u.gf_root_fid, sizeof(struct lu_fid));
1703 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
1704 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
1706 if (!fid_is_sane(&gf->gf_fid))
1707 GOTO(out, rc = -EINVAL);
1709 /* Val is struct getinfo_fid2path result plus path */
1710 vallen = sizeof(*gf) + gf->gf_pathlen;
1712 rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf);
1713 if (rc != 0 && rc != -EREMOTE)
1716 if (vallen <= sizeof(*gf))
1717 GOTO(out, rc = -EPROTO);
1718 if (vallen > sizeof(*gf) + gf->gf_pathlen)
1719 GOTO(out, rc = -EOVERFLOW);
1721 CDEBUG(D_IOCTL, "path got "DFID" from %llu #%d: %s\n",
1722 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno,
1723 gf->gf_pathlen < 512 ? gf->gf_u.gf_path :
1724 /* only log the last 512 characters of the path */
1725 gf->gf_u.gf_path + gf->gf_pathlen - 512);
1728 OBD_FREE(key, keylen);
1732 static int mdc_ioc_hsm_progress(struct obd_export *exp,
1733 struct hsm_progress_kernel *hpk)
1735 struct obd_import *imp = class_exp2cliimp(exp);
1736 struct hsm_progress_kernel *req_hpk;
1737 struct ptlrpc_request *req;
1741 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS,
1742 LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS);
1744 GOTO(out, rc = -ENOMEM);
1746 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1748 /* Copy hsm_progress struct */
1749 req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS);
1750 if (req_hpk == NULL)
1751 GOTO(out, rc = -EPROTO);
1754 req_hpk->hpk_errval = lustre_errno_hton(hpk->hpk_errval);
1756 ptlrpc_request_set_replen(req);
1758 ptlrpc_get_mod_rpc_slot(req);
1759 rc = ptlrpc_queue_wait(req);
1760 ptlrpc_put_mod_rpc_slot(req);
1764 ptlrpc_req_finished(req);
1768 * Send hsm_ct_register to MDS
1770 * \param[in] imp import
1771 * \param[in] archive_count if in bitmap format, it is the bitmap,
1772 * else it is the count of archive_ids
1773 * \param[in] archives if in bitmap format, it is NULL,
1774 * else it is archive_id lists
1776 static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archive_count,
1779 struct ptlrpc_request *req;
1780 __u32 *archive_array;
1781 size_t archives_size;
1785 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_CT_REGISTER);
1789 if (archives != NULL)
1790 archives_size = sizeof(*archive_array) * archive_count;
1792 archives_size = sizeof(archive_count);
1794 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_ARCHIVE,
1795 RCL_CLIENT, archives_size);
1797 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_CT_REGISTER);
1799 ptlrpc_request_free(req);
1803 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1805 archive_array = req_capsule_client_get(&req->rq_pill,
1806 &RMF_MDS_HSM_ARCHIVE);
1807 if (archive_array == NULL)
1808 GOTO(out, rc = -EPROTO);
1810 if (archives != NULL)
1811 memcpy(archive_array, archives, archives_size);
1813 *archive_array = archive_count;
1815 ptlrpc_request_set_replen(req);
1817 rc = mdc_queue_wait(req);
1820 ptlrpc_req_finished(req);
1824 static int mdc_ioc_hsm_current_action(struct obd_export *exp,
1825 struct md_op_data *op_data)
1827 struct hsm_current_action *hca = op_data->op_data;
1828 struct hsm_current_action *req_hca;
1829 struct ptlrpc_request *req;
1833 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1834 &RQF_MDS_HSM_ACTION);
1838 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION);
1840 ptlrpc_request_free(req);
1844 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1845 op_data->op_suppgids[0], 0);
1847 ptlrpc_request_set_replen(req);
1849 rc = mdc_queue_wait(req);
1853 req_hca = req_capsule_server_get(&req->rq_pill,
1854 &RMF_MDS_HSM_CURRENT_ACTION);
1855 if (req_hca == NULL)
1856 GOTO(out, rc = -EPROTO);
1862 ptlrpc_req_finished(req);
1866 static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp)
1868 struct ptlrpc_request *req;
1872 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER,
1874 MDS_HSM_CT_UNREGISTER);
1876 GOTO(out, rc = -ENOMEM);
1878 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1880 ptlrpc_request_set_replen(req);
1882 rc = mdc_queue_wait(req);
1885 ptlrpc_req_finished(req);
1889 static int mdc_ioc_hsm_state_get(struct obd_export *exp,
1890 struct md_op_data *op_data)
1892 struct hsm_user_state *hus = op_data->op_data;
1893 struct hsm_user_state *req_hus;
1894 struct ptlrpc_request *req;
1898 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1899 &RQF_MDS_HSM_STATE_GET);
1903 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET);
1905 ptlrpc_request_free(req);
1909 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1910 op_data->op_suppgids[0], 0);
1912 ptlrpc_request_set_replen(req);
1914 rc = mdc_queue_wait(req);
1918 req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE);
1919 if (req_hus == NULL)
1920 GOTO(out, rc = -EPROTO);
1926 ptlrpc_req_finished(req);
1930 static int mdc_ioc_hsm_state_set(struct obd_export *exp,
1931 struct md_op_data *op_data)
1933 struct hsm_state_set *hss = op_data->op_data;
1934 struct hsm_state_set *req_hss;
1935 struct ptlrpc_request *req;
1939 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1940 &RQF_MDS_HSM_STATE_SET);
1944 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET);
1946 ptlrpc_request_free(req);
1950 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1951 op_data->op_suppgids[0], 0);
1954 req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET);
1955 if (req_hss == NULL)
1956 GOTO(out, rc = -EPROTO);
1959 ptlrpc_request_set_replen(req);
1961 ptlrpc_get_mod_rpc_slot(req);
1962 rc = ptlrpc_queue_wait(req);
1963 ptlrpc_put_mod_rpc_slot(req);
1967 ptlrpc_req_finished(req);
1971 static int mdc_ioc_hsm_request(struct obd_export *exp,
1972 struct hsm_user_request *hur)
1974 struct obd_import *imp = class_exp2cliimp(exp);
1975 struct ptlrpc_request *req;
1976 struct hsm_request *req_hr;
1977 struct hsm_user_item *req_hui;
1982 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST);
1984 GOTO(out, rc = -ENOMEM);
1986 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT,
1987 hur->hur_request.hr_itemcount
1988 * sizeof(struct hsm_user_item));
1989 req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT,
1990 hur->hur_request.hr_data_len);
1992 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST);
1994 ptlrpc_request_free(req);
1998 mdc_pack_body(req, NULL, 0, 0, -1, 0);
2000 /* Copy hsm_request struct */
2001 req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST);
2003 GOTO(out, rc = -EPROTO);
2004 *req_hr = hur->hur_request;
2006 /* Copy hsm_user_item structs */
2007 req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM);
2008 if (req_hui == NULL)
2009 GOTO(out, rc = -EPROTO);
2010 memcpy(req_hui, hur->hur_user_item,
2011 hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item));
2013 /* Copy opaque field */
2014 req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA);
2015 if (req_opaque == NULL)
2016 GOTO(out, rc = -EPROTO);
2017 memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len);
2019 ptlrpc_request_set_replen(req);
2021 ptlrpc_get_mod_rpc_slot(req);
2022 rc = ptlrpc_queue_wait(req);
2023 ptlrpc_put_mod_rpc_slot(req);
2028 ptlrpc_req_finished(req);
2032 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2033 struct lustre_kernelcomm *lk);
2035 static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp,
2036 struct obd_quotactl *oqctl)
2038 struct ptlrpc_request *req;
2039 struct obd_quotactl *oqc;
2043 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
2044 &RQF_MDS_QUOTACTL, LUSTRE_MDS_VERSION,
2049 oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
2052 ptlrpc_request_set_replen(req);
2053 ptlrpc_at_set_req_timeout(req);
2055 rc = ptlrpc_queue_wait(req);
2057 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
2059 if (req->rq_repmsg &&
2060 (oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL))) {
2063 CERROR ("Can't unpack obd_quotactl\n");
2066 ptlrpc_req_finished(req);
2071 static int mdc_ioc_swap_layouts(struct obd_export *exp,
2072 struct md_op_data *op_data)
2075 struct ptlrpc_request *req;
2077 struct mdc_swap_layouts *msl, *payload;
2080 msl = op_data->op_data;
2082 /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the
2083 * first thing it will do is to cancel the 2 layout
2084 * locks held by this client.
2085 * So the client must cancel its layout locks on the 2 fids
2086 * with the request RPC to avoid extra RPC round trips.
2088 count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels,
2089 LCK_EX, MDS_INODELOCK_LAYOUT |
2090 MDS_INODELOCK_XATTR);
2091 count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels,
2092 LCK_EX, MDS_INODELOCK_LAYOUT |
2093 MDS_INODELOCK_XATTR);
2095 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2096 &RQF_MDS_SWAP_LAYOUTS);
2098 ldlm_lock_list_put(&cancels, l_bl_ast, count);
2102 rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count);
2104 ptlrpc_request_free(req);
2108 mdc_swap_layouts_pack(req, op_data);
2110 payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS);
2115 ptlrpc_request_set_replen(req);
2117 rc = ptlrpc_queue_wait(req);
2123 ptlrpc_req_finished(req);
2127 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2128 void *karg, void __user *uarg)
2130 struct obd_device *obd = exp->exp_obd;
2131 struct obd_ioctl_data *data = karg;
2132 struct obd_import *imp = obd->u.cli.cl_import;
2136 if (!try_module_get(THIS_MODULE)) {
2137 CERROR("%s: cannot get module '%s'\n", obd->obd_name,
2138 module_name(THIS_MODULE));
2142 case OBD_IOC_FID2PATH:
2143 rc = mdc_ioc_fid2path(exp, karg);
2145 case LL_IOC_HSM_CT_START:
2146 rc = mdc_ioc_hsm_ct_start(exp, karg);
2147 /* ignore if it was already registered on this MDS. */
2151 case LL_IOC_HSM_PROGRESS:
2152 rc = mdc_ioc_hsm_progress(exp, karg);
2154 case LL_IOC_HSM_STATE_GET:
2155 rc = mdc_ioc_hsm_state_get(exp, karg);
2157 case LL_IOC_HSM_STATE_SET:
2158 rc = mdc_ioc_hsm_state_set(exp, karg);
2160 case LL_IOC_HSM_ACTION:
2161 rc = mdc_ioc_hsm_current_action(exp, karg);
2163 case LL_IOC_HSM_REQUEST:
2164 rc = mdc_ioc_hsm_request(exp, karg);
2166 case OBD_IOC_CLIENT_RECOVER:
2167 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0);
2171 case IOC_OSC_SET_ACTIVE:
2172 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
2175 * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by
2176 * LMV instead of MDC. But when the cluster is upgraded from 1.8,
2177 * there'd be no LMV layer thus we might be called here. Eventually
2178 * this code should be removed.
2181 case IOC_OBD_STATFS: {
2182 struct obd_statfs stat_buf = {0};
2184 if (*((__u32 *) data->ioc_inlbuf2) != 0)
2185 GOTO(out, rc = -ENODEV);
2188 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
2189 min((int)data->ioc_plen2,
2190 (int)sizeof(struct obd_uuid))))
2191 GOTO(out, rc = -EFAULT);
2193 rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf,
2194 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
2199 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
2200 min((int) data->ioc_plen1,
2201 (int) sizeof(stat_buf))))
2202 GOTO(out, rc = -EFAULT);
2206 case OBD_IOC_QUOTACTL: {
2207 struct if_quotactl *qctl = karg;
2208 struct obd_quotactl *oqctl;
2210 OBD_ALLOC_PTR(oqctl);
2212 GOTO(out, rc = -ENOMEM);
2214 QCTL_COPY(oqctl, qctl);
2215 rc = obd_quotactl(exp, oqctl);
2217 QCTL_COPY(qctl, oqctl);
2218 qctl->qc_valid = QC_MDTIDX;
2219 qctl->obd_uuid = obd->u.cli.cl_target_uuid;
2222 OBD_FREE_PTR(oqctl);
2225 case LL_IOC_GET_CONNECT_FLAGS:
2226 if (copy_to_user(uarg, exp_connect_flags_ptr(exp),
2227 sizeof(*exp_connect_flags_ptr(exp))))
2228 GOTO(out, rc = -EFAULT);
2231 case LL_IOC_LOV_SWAP_LAYOUTS:
2232 rc = mdc_ioc_swap_layouts(exp, karg);
2235 CERROR("unrecognised ioctl: cmd = %#x\n", cmd);
2236 GOTO(out, rc = -ENOTTY);
2239 module_put(THIS_MODULE);
2244 static int mdc_get_info_rpc(struct obd_export *exp,
2245 u32 keylen, void *key,
2246 u32 vallen, void *val)
2248 struct obd_import *imp = class_exp2cliimp(exp);
2249 struct ptlrpc_request *req;
2254 req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
2258 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
2259 RCL_CLIENT, keylen);
2260 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
2261 RCL_CLIENT, sizeof(vallen));
2263 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
2265 ptlrpc_request_free(req);
2269 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
2270 memcpy(tmp, key, keylen);
2271 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
2272 memcpy(tmp, &vallen, sizeof(vallen));
2274 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
2275 RCL_SERVER, vallen);
2276 ptlrpc_request_set_replen(req);
2278 rc = ptlrpc_queue_wait(req);
2279 /* -EREMOTE means the get_info result is partial, and it needs to
2280 * continue on another MDT, see fid2path part in lmv_iocontrol */
2281 if (rc == 0 || rc == -EREMOTE) {
2282 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
2283 memcpy(val, tmp, vallen);
2284 if (ptlrpc_rep_need_swab(req)) {
2285 if (KEY_IS(KEY_FID2PATH))
2286 lustre_swab_fid2path(val);
2289 ptlrpc_req_finished(req);
2294 static void lustre_swab_hai(struct hsm_action_item *h)
2296 __swab32s(&h->hai_len);
2297 __swab32s(&h->hai_action);
2298 lustre_swab_lu_fid(&h->hai_fid);
2299 lustre_swab_lu_fid(&h->hai_dfid);
2300 __swab64s(&h->hai_cookie);
2301 __swab64s(&h->hai_extent.offset);
2302 __swab64s(&h->hai_extent.length);
2303 __swab64s(&h->hai_gid);
2306 static void lustre_swab_hal(struct hsm_action_list *h)
2308 struct hsm_action_item *hai;
2311 __swab32s(&h->hal_version);
2312 __swab32s(&h->hal_count);
2313 __swab32s(&h->hal_archive_id);
2314 __swab64s(&h->hal_flags);
2316 for (i = 0; i < h->hal_count; i++, hai = hai_next(hai))
2317 lustre_swab_hai(hai);
2320 static void lustre_swab_kuch(struct kuc_hdr *l)
2322 __swab16s(&l->kuc_magic);
2323 /* __u8 l->kuc_transport */
2324 __swab16s(&l->kuc_msgtype);
2325 __swab16s(&l->kuc_msglen);
2328 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2329 struct lustre_kernelcomm *lk)
2331 struct obd_import *imp = class_exp2cliimp(exp);
2334 if (lk->lk_group != KUC_GRP_HSM) {
2335 CERROR("Bad copytool group %d\n", lk->lk_group);
2339 CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd,
2340 lk->lk_uid, lk->lk_group, lk->lk_flags);
2342 if (lk->lk_flags & LK_FLG_STOP) {
2343 /* Unregister with the coordinator */
2344 rc = mdc_ioc_hsm_ct_unregister(imp);
2346 __u32 *archives = NULL;
2348 if ((lk->lk_flags & LK_FLG_DATANR) && lk->lk_data_count > 0)
2349 archives = lk->lk_data;
2351 rc = mdc_ioc_hsm_ct_register(imp, lk->lk_data_count, archives);
2358 * Send a message to any listening copytools
2359 * @param val KUC message (kuc_hdr + hsm_action_list)
2360 * @param len total length of message
2362 static int mdc_hsm_copytool_send(const struct obd_uuid *uuid,
2363 size_t len, void *val)
2365 struct kuc_hdr *lh = (struct kuc_hdr *)val;
2366 struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1);
2370 if (len < sizeof(*lh) + sizeof(*hal)) {
2371 CERROR("Short HSM message %zu < %zu\n", len,
2372 sizeof(*lh) + sizeof(*hal));
2375 if (lh->kuc_magic == __swab16(KUC_MAGIC)) {
2376 lustre_swab_kuch(lh);
2377 lustre_swab_hal(hal);
2378 } else if (lh->kuc_magic != KUC_MAGIC) {
2379 CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC);
2383 CDEBUG(D_HSM, " Received message mg=%x t=%d m=%d l=%d actions=%d "
2385 lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype,
2386 lh->kuc_msglen, hal->hal_count, hal->hal_fsname);
2388 /* Broadcast to HSM listeners */
2389 rc = libcfs_kkuc_group_put(uuid, KUC_GRP_HSM, lh);
2395 * callback function passed to kuc for re-registering each HSM copytool
2396 * running on MDC, after MDT shutdown/recovery.
2397 * @param data copytool registration data
2398 * @param cb_arg callback argument (obd_import)
2400 static int mdc_hsm_ct_reregister(void *data, void *cb_arg)
2402 struct obd_import *imp = (struct obd_import *)cb_arg;
2403 struct kkuc_ct_data *kcd = data;
2404 __u32 *archives = NULL;
2408 (kcd->kcd_magic != KKUC_CT_DATA_ARRAY_MAGIC &&
2409 kcd->kcd_magic != KKUC_CT_DATA_BITMAP_MAGIC))
2412 if (kcd->kcd_magic == KKUC_CT_DATA_BITMAP_MAGIC) {
2413 CDEBUG(D_HA, "%s: recover copytool registration to MDT "
2414 "(archive=%#x)\n", imp->imp_obd->obd_name,
2415 kcd->kcd_nr_archives);
2417 CDEBUG(D_HA, "%s: recover copytool registration to MDT "
2418 "(archive nr = %u)\n",
2419 imp->imp_obd->obd_name, kcd->kcd_nr_archives);
2420 if (kcd->kcd_nr_archives != 0)
2421 archives = kcd->kcd_archives;
2424 rc = mdc_ioc_hsm_ct_register(imp, kcd->kcd_nr_archives, archives);
2425 /* ignore error if the copytool is already registered */
2426 return (rc == -EEXIST) ? 0 : rc;
2430 * Re-establish all kuc contexts with MDT
2431 * after MDT shutdown/recovery.
2433 static int mdc_kuc_reregister(struct obd_import *imp)
2435 /* re-register HSM agents */
2436 return libcfs_kkuc_group_foreach(&imp->imp_obd->obd_uuid, KUC_GRP_HSM,
2437 mdc_hsm_ct_reregister, imp);
2440 static int mdc_set_info_async(const struct lu_env *env,
2441 struct obd_export *exp,
2442 u32 keylen, void *key,
2443 u32 vallen, void *val,
2444 struct ptlrpc_request_set *set)
2446 struct obd_import *imp = class_exp2cliimp(exp);
2450 if (KEY_IS(KEY_READ_ONLY)) {
2451 if (vallen != sizeof(int))
2454 spin_lock(&imp->imp_lock);
2455 if (*((int *)val)) {
2456 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
2457 imp->imp_connect_data.ocd_connect_flags |=
2460 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
2461 imp->imp_connect_data.ocd_connect_flags &=
2462 ~OBD_CONNECT_RDONLY;
2464 spin_unlock(&imp->imp_lock);
2466 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2467 keylen, key, vallen, val, set);
2470 if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2471 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2472 keylen, key, vallen, val, set);
2475 if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) {
2476 rc = mdc_hsm_copytool_send(&imp->imp_obd->obd_uuid, vallen,
2481 if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2482 __u32 *default_easize = val;
2484 exp->exp_obd->u.cli.cl_default_mds_easize = *default_easize;
2488 rc = osc_set_info_async(env, exp, keylen, key, vallen, val, set);
2492 static int mdc_get_info(const struct lu_env *env, struct obd_export *exp,
2493 __u32 keylen, void *key, __u32 *vallen, void *val)
2497 if (KEY_IS(KEY_MAX_EASIZE)) {
2498 __u32 mdsize, *max_easize;
2500 if (*vallen != sizeof(int))
2502 mdsize = *(__u32 *)val;
2503 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
2504 exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
2506 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
2508 } else if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2509 __u32 *default_easize;
2511 if (*vallen != sizeof(int))
2513 default_easize = val;
2514 *default_easize = exp->exp_obd->u.cli.cl_default_mds_easize;
2516 } else if (KEY_IS(KEY_CONN_DATA)) {
2517 struct obd_import *imp = class_exp2cliimp(exp);
2518 struct obd_connect_data *data = val;
2520 if (*vallen != sizeof(*data))
2523 *data = imp->imp_connect_data;
2525 } else if (KEY_IS(KEY_TGT_COUNT)) {
2526 *((__u32 *)val) = 1;
2530 rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
2535 static int mdc_fsync(struct obd_export *exp, const struct lu_fid *fid,
2536 struct ptlrpc_request **request)
2538 struct ptlrpc_request *req;
2543 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
2547 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
2549 ptlrpc_request_free(req);
2553 mdc_pack_body(req, fid, 0, 0, -1, 0);
2555 ptlrpc_request_set_replen(req);
2557 rc = ptlrpc_queue_wait(req);
2559 ptlrpc_req_finished(req);
2565 struct mdc_rmfid_args {
2570 int mdc_rmfid_interpret(const struct lu_env *env, struct ptlrpc_request *req,
2573 struct mdc_rmfid_args *aa;
2578 aa = ptlrpc_req_async_args(aa, req);
2580 size = req_capsule_get_size(&req->rq_pill, &RMF_RCS,
2582 LASSERT(size == sizeof(int) * aa->mra_nr);
2583 rcs = req_capsule_server_get(&req->rq_pill, &RMF_RCS);
2585 LASSERT(aa->mra_rcs);
2586 LASSERT(aa->mra_nr);
2587 memcpy(aa->mra_rcs, rcs, size);
2593 static int mdc_rmfid(struct obd_export *exp, struct fid_array *fa,
2594 int *rcs, struct ptlrpc_request_set *set)
2596 struct ptlrpc_request *req;
2597 struct mdc_rmfid_args *aa;
2603 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_RMFID);
2607 flen = fa->fa_nr * sizeof(struct lu_fid);
2608 req_capsule_set_size(&req->rq_pill, &RMF_FID_ARRAY,
2610 req_capsule_set_size(&req->rq_pill, &RMF_FID_ARRAY,
2612 req_capsule_set_size(&req->rq_pill, &RMF_RCS,
2613 RCL_SERVER, fa->fa_nr * sizeof(__u32));
2614 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_RMFID);
2616 ptlrpc_request_free(req);
2619 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FID_ARRAY);
2620 memcpy(tmp, fa->fa_fids, flen);
2622 mdc_pack_body(req, NULL, 0, 0, -1, 0);
2623 b = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
2624 b->mbo_ctime = ktime_get_real_seconds();
2626 ptlrpc_request_set_replen(req);
2629 aa = ptlrpc_req_async_args(aa, req);
2631 aa->mra_nr = fa->fa_nr;
2632 req->rq_interpret_reply = mdc_rmfid_interpret;
2634 ptlrpc_set_add_req(set, req);
2635 ptlrpc_check_set(NULL, set);
2640 static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
2641 enum obd_import_event event)
2643 struct client_obd *cli = &obd->u.cli;
2646 LASSERT(imp->imp_obd == obd);
2649 case IMP_EVENT_DISCON:
2650 spin_lock(&cli->cl_loi_list_lock);
2651 cli->cl_avail_grant = 0;
2652 cli->cl_lost_grant = 0;
2653 spin_unlock(&cli->cl_loi_list_lock);
2655 case IMP_EVENT_INACTIVE:
2657 * Flush current sequence to make client obtain new one
2658 * from server in case of disconnect/reconnect.
2660 down_read(&cli->cl_seq_rwsem);
2662 seq_client_flush(cli->cl_seq);
2663 up_read(&cli->cl_seq_rwsem);
2665 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE);
2667 case IMP_EVENT_INVALIDATE: {
2668 struct ldlm_namespace *ns = obd->obd_namespace;
2672 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2674 env = cl_env_get(&refcheck);
2676 /* Reset grants. All pages go to failing rpcs due to
2677 * the invalid import.
2679 osc_io_unplug(env, cli, NULL);
2681 cfs_hash_for_each_nolock(ns->ns_rs_hash,
2682 osc_ldlm_resource_invalidate,
2684 cl_env_put(env, &refcheck);
2685 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2691 case IMP_EVENT_ACTIVE:
2692 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE);
2693 /* redo the kuc registration after reconnecting */
2695 rc = mdc_kuc_reregister(imp);
2697 case IMP_EVENT_OCD: {
2698 struct obd_connect_data *ocd = &imp->imp_connect_data;
2700 if (OCD_HAS_FLAG(ocd, GRANT))
2701 osc_init_grant(cli, ocd);
2703 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD);
2706 case IMP_EVENT_DEACTIVATE:
2707 case IMP_EVENT_ACTIVATE:
2710 CERROR("Unknown import event %x\n", event);
2716 int mdc_fid_alloc(const struct lu_env *env, struct obd_export *exp,
2717 struct lu_fid *fid, struct md_op_data *op_data)
2719 struct client_obd *cli = &exp->exp_obd->u.cli;
2724 down_read(&cli->cl_seq_rwsem);
2726 rc = seq_client_alloc_fid(env, cli->cl_seq, fid);
2727 up_read(&cli->cl_seq_rwsem);
2732 static struct obd_uuid *mdc_get_uuid(struct obd_export *exp)
2734 struct client_obd *cli = &exp->exp_obd->u.cli;
2735 return &cli->cl_target_uuid;
2739 * Determine whether the lock can be canceled before replaying it during
2740 * recovery, non zero value will be return if the lock can be canceled,
2741 * or zero returned for not
2743 static int mdc_cancel_weight(struct ldlm_lock *lock)
2745 if (lock->l_resource->lr_type != LDLM_IBITS)
2748 /* FIXME: if we ever get into a situation where there are too many
2749 * opened files with open locks on a single node, then we really
2750 * should replay these open locks to reget it */
2751 if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN)
2754 /* Special case for DoM locks, cancel only unused and granted locks */
2755 if (ldlm_has_dom(lock) &&
2756 (lock->l_granted_mode != lock->l_req_mode ||
2757 osc_ldlm_weigh_ast(lock) != 0))
2763 static int mdc_resource_inode_free(struct ldlm_resource *res)
2765 if (res->lr_lvb_inode)
2766 res->lr_lvb_inode = NULL;
2771 static struct ldlm_valblock_ops inode_lvbo = {
2772 .lvbo_free = mdc_resource_inode_free
2775 static int mdc_llog_init(struct obd_device *obd)
2777 struct obd_llog_group *olg = &obd->obd_olg;
2778 struct llog_ctxt *ctxt;
2783 rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, obd,
2788 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
2789 llog_initiator_connect(ctxt);
2790 llog_ctxt_put(ctxt);
2795 static void mdc_llog_finish(struct obd_device *obd)
2797 struct llog_ctxt *ctxt;
2801 ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
2803 llog_cleanup(NULL, ctxt);
2808 int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
2814 rc = osc_setup_common(obd, cfg);
2818 rc = mdc_tunables_init(obd);
2820 GOTO(err_osc_cleanup, rc);
2822 obd->u.cli.cl_dom_min_inline_repsize = MDC_DOM_DEF_INLINE_REPSIZE;
2824 ns_register_cancel(obd->obd_namespace, mdc_cancel_weight);
2826 obd->obd_namespace->ns_lvbo = &inode_lvbo;
2828 rc = mdc_llog_init(obd);
2830 CERROR("%s: failed to setup llogging subsystems: rc = %d\n",
2832 GOTO(err_llog_cleanup, rc);
2835 rc = mdc_changelog_cdev_init(obd);
2837 CERROR("%s: failed to setup changelog char device: rc = %d\n",
2839 GOTO(err_changelog_cleanup, rc);
2844 err_changelog_cleanup:
2845 mdc_llog_finish(obd);
2847 lprocfs_free_md_stats(obd);
2848 ptlrpc_lprocfs_unregister_obd(obd);
2850 osc_cleanup_common(obd);
2854 /* Initialize the default and maximum LOV EA sizes. This allows
2855 * us to make MDS RPCs with large enough reply buffers to hold a default
2856 * sized EA without having to calculate this (via a call into the
2857 * LOV + OSCs) each time we make an RPC. The maximum size is also tracked
2858 * but not used to avoid wastefully vmalloc()'ing large reply buffers when
2859 * a large number of stripes is possible. If a larger reply buffer is
2860 * required it will be reallocated in the ptlrpc layer due to overflow.
2862 static int mdc_init_ea_size(struct obd_export *exp, __u32 easize,
2865 struct obd_device *obd = exp->exp_obd;
2866 struct client_obd *cli = &obd->u.cli;
2869 if (cli->cl_max_mds_easize < easize)
2870 cli->cl_max_mds_easize = easize;
2872 if (cli->cl_default_mds_easize < def_easize)
2873 cli->cl_default_mds_easize = def_easize;
2878 static int mdc_precleanup(struct obd_device *obd)
2882 osc_precleanup_common(obd);
2883 mdc_changelog_cdev_finish(obd);
2885 obd_cleanup_client_import(obd);
2886 ptlrpc_lprocfs_unregister_obd(obd);
2887 lprocfs_free_md_stats(obd);
2888 mdc_llog_finish(obd);
2892 static int mdc_cleanup(struct obd_device *obd)
2894 return osc_cleanup_common(obd);
2897 static const struct obd_ops mdc_obd_ops = {
2898 .o_owner = THIS_MODULE,
2899 .o_setup = mdc_setup,
2900 .o_precleanup = mdc_precleanup,
2901 .o_cleanup = mdc_cleanup,
2902 .o_add_conn = client_import_add_conn,
2903 .o_del_conn = client_import_del_conn,
2904 .o_connect = client_connect_import,
2905 .o_reconnect = osc_reconnect,
2906 .o_disconnect = osc_disconnect,
2907 .o_iocontrol = mdc_iocontrol,
2908 .o_set_info_async = mdc_set_info_async,
2909 .o_statfs = mdc_statfs,
2910 .o_statfs_async = mdc_statfs_async,
2911 .o_fid_init = client_fid_init,
2912 .o_fid_fini = client_fid_fini,
2913 .o_fid_alloc = mdc_fid_alloc,
2914 .o_import_event = mdc_import_event,
2915 .o_get_info = mdc_get_info,
2916 .o_get_uuid = mdc_get_uuid,
2917 .o_quotactl = mdc_quotactl,
2920 static const struct md_ops mdc_md_ops = {
2921 .m_get_root = mdc_get_root,
2922 .m_null_inode = mdc_null_inode,
2923 .m_close = mdc_close,
2924 .m_create = mdc_create,
2925 .m_enqueue = mdc_enqueue,
2926 .m_getattr = mdc_getattr,
2927 .m_getattr_name = mdc_getattr_name,
2928 .m_intent_lock = mdc_intent_lock,
2930 .m_rename = mdc_rename,
2931 .m_setattr = mdc_setattr,
2932 .m_setxattr = mdc_setxattr,
2933 .m_getxattr = mdc_getxattr,
2934 .m_fsync = mdc_fsync,
2935 .m_file_resync = mdc_file_resync,
2936 .m_read_page = mdc_read_page,
2937 .m_unlink = mdc_unlink,
2938 .m_cancel_unused = mdc_cancel_unused,
2939 .m_init_ea_size = mdc_init_ea_size,
2940 .m_set_lock_data = mdc_set_lock_data,
2941 .m_lock_match = mdc_lock_match,
2942 .m_get_lustre_md = mdc_get_lustre_md,
2943 .m_free_lustre_md = mdc_free_lustre_md,
2944 .m_set_open_replay_data = mdc_set_open_replay_data,
2945 .m_clear_open_replay_data = mdc_clear_open_replay_data,
2946 .m_intent_getattr_async = mdc_intent_getattr_async,
2947 .m_revalidate_lock = mdc_revalidate_lock,
2948 .m_rmfid = mdc_rmfid,
2951 static int __init mdc_init(void)
2953 return class_register_type(&mdc_obd_ops, &mdc_md_ops, true, NULL,
2954 LUSTRE_MDC_NAME, &mdc_device_type);
2957 static void __exit mdc_exit(void)
2959 class_unregister_type(LUSTRE_MDC_NAME);
2962 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
2963 MODULE_DESCRIPTION("Lustre Metadata Client");
2964 MODULE_VERSION(LUSTRE_VERSION_STRING);
2965 MODULE_LICENSE("GPL");
2967 module_init(mdc_init);
2968 module_exit(mdc_exit);