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 #ifdef HAVE_UIDGID_HEADER
43 # include <linux/uidgid.h>
46 #include <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 <uapi/linux/lustre/lustre_ioctl.h>
54 #include <lustre_kernelcomm.h>
55 #include <lustre_lmv.h>
56 #include <lustre_log.h>
57 #include <lustre_swab.h>
58 #include <obd_class.h>
59 #include <lustre_osc.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 void mdc_reset_acl_req(struct ptlrpc_request *req)
197 spin_lock(&req->rq_early_free_lock);
198 sptlrpc_cli_free_repbuf(req);
199 req->rq_repbuf = NULL;
200 req->rq_repbuf_len = 0;
201 req->rq_repdata = NULL;
202 req->rq_reqdata_len = 0;
203 spin_unlock(&req->rq_early_free_lock);
206 static int mdc_getattr(struct obd_export *exp, struct md_op_data *op_data,
207 struct ptlrpc_request **request)
209 struct ptlrpc_request *req;
210 struct obd_import *imp = class_exp2cliimp(exp);
211 __u32 acl_bufsize = LUSTRE_POSIX_ACL_MAX_SIZE_OLD;
215 /* Single MDS without an LMV case */
216 if (op_data->op_flags & MF_GET_MDT_IDX) {
222 req = ptlrpc_request_alloc(imp, &RQF_MDS_GETATTR);
226 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
228 ptlrpc_request_free(req);
233 mdc_pack_body(req, &op_data->op_fid1, op_data->op_valid,
234 op_data->op_mode, -1, 0);
235 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER, acl_bufsize);
236 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
238 ptlrpc_request_set_replen(req);
240 rc = mdc_getattr_common(exp, req);
243 acl_bufsize = MIN(imp->imp_connect_data.ocd_max_easize,
245 mdc_reset_acl_req(req);
249 ptlrpc_req_finished(req);
257 static int mdc_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
258 struct ptlrpc_request **request)
260 struct ptlrpc_request *req;
261 struct obd_import *imp = class_exp2cliimp(exp);
262 __u32 acl_bufsize = LUSTRE_POSIX_ACL_MAX_SIZE_OLD;
267 req = ptlrpc_request_alloc(imp, &RQF_MDS_GETATTR_NAME);
271 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
272 op_data->op_namelen + 1);
274 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME);
276 ptlrpc_request_free(req);
280 if (op_data->op_name) {
281 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
282 LASSERT(strnlen(op_data->op_name, op_data->op_namelen) ==
283 op_data->op_namelen);
284 memcpy(name, op_data->op_name, op_data->op_namelen);
288 mdc_pack_body(req, &op_data->op_fid1, op_data->op_valid,
289 op_data->op_mode, op_data->op_suppgids[0], 0);
290 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
292 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER, acl_bufsize);
293 ptlrpc_request_set_replen(req);
295 rc = mdc_getattr_common(exp, req);
298 acl_bufsize = MIN(imp->imp_connect_data.ocd_max_easize,
300 mdc_reset_acl_req(req);
304 ptlrpc_req_finished(req);
312 static int mdc_xattr_common(struct obd_export *exp,const struct req_format *fmt,
313 const struct lu_fid *fid, int opcode, u64 valid,
314 const char *xattr_name, const char *input,
315 int input_size, int output_size, int flags,
316 __u32 suppgid, struct ptlrpc_request **request)
318 struct ptlrpc_request *req;
319 int xattr_namelen = 0;
325 req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
330 xattr_namelen = strlen(xattr_name) + 1;
331 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
336 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
339 /* get SELinux policy info if any */
340 rc = sptlrpc_get_sepol(req);
342 ptlrpc_request_free(req);
345 req_capsule_set_size(&req->rq_pill, &RMF_SELINUX_POL, RCL_CLIENT,
346 strlen(req->rq_sepol) ?
347 strlen(req->rq_sepol) + 1 : 0);
349 /* Flush local XATTR locks to get rid of a possible cancel RPC */
350 if (opcode == MDS_REINT && fid_is_sane(fid) &&
351 exp->exp_connect_data.ocd_ibits_known & MDS_INODELOCK_XATTR) {
352 struct list_head cancels = LIST_HEAD_INIT(cancels);
355 /* Without that packing would fail */
357 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
360 count = mdc_resource_get_unused(exp, fid,
362 MDS_INODELOCK_XATTR);
364 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
366 ptlrpc_request_free(req);
370 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
372 ptlrpc_request_free(req);
377 if (opcode == MDS_REINT) {
378 struct mdt_rec_setxattr *rec;
380 CLASSERT(sizeof(struct mdt_rec_setxattr) ==
381 sizeof(struct mdt_rec_reint));
382 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
383 rec->sx_opcode = REINT_SETXATTR;
384 rec->sx_fsuid = from_kuid(&init_user_ns, current_fsuid());
385 rec->sx_fsgid = from_kgid(&init_user_ns, current_fsgid());
386 rec->sx_cap = cfs_curproc_cap_pack();
387 rec->sx_suppgid1 = suppgid;
388 rec->sx_suppgid2 = -1;
390 rec->sx_valid = valid | OBD_MD_FLCTIME;
391 rec->sx_time = ktime_get_real_seconds();
392 rec->sx_size = output_size;
393 rec->sx_flags = flags;
395 mdc_pack_body(req, fid, valid, output_size, suppgid, flags);
399 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
400 memcpy(tmp, xattr_name, xattr_namelen);
403 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
404 memcpy(tmp, input, input_size);
407 mdc_file_sepol_pack(req);
409 if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
410 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
411 RCL_SERVER, output_size);
412 ptlrpc_request_set_replen(req);
415 if (opcode == MDS_REINT)
416 mdc_get_mod_rpc_slot(req, NULL);
418 rc = ptlrpc_queue_wait(req);
420 if (opcode == MDS_REINT)
421 mdc_put_mod_rpc_slot(req, NULL);
424 ptlrpc_req_finished(req);
430 static int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
431 u64 obd_md_valid, const char *name,
432 const void *value, size_t value_size,
433 unsigned int xattr_flags, u32 suppgid,
434 struct ptlrpc_request **req)
436 LASSERT(obd_md_valid == OBD_MD_FLXATTR ||
437 obd_md_valid == OBD_MD_FLXATTRRM);
439 return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
440 fid, MDS_REINT, obd_md_valid, name,
441 value, value_size, 0, xattr_flags, suppgid,
445 static int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
446 u64 obd_md_valid, const char *name, size_t buf_size,
447 struct ptlrpc_request **req)
449 struct mdt_body *body;
452 LASSERT(obd_md_valid == OBD_MD_FLXATTR ||
453 obd_md_valid == OBD_MD_FLXATTRLS);
455 /* The below message is checked in sanity-selinux.sh test_20d */
456 CDEBUG(D_INFO, "%s: get xattr '%s' for "DFID"\n",
457 exp->exp_obd->obd_name, name, PFID(fid));
458 rc = mdc_xattr_common(exp, &RQF_MDS_GETXATTR, fid, MDS_GETXATTR,
459 obd_md_valid, name, NULL, 0, buf_size, 0, -1,
464 body = req_capsule_server_get(&(*req)->rq_pill, &RMF_MDT_BODY);
466 GOTO(out, rc = -EPROTO);
468 /* only detect the xattr size */
470 /* LU-11109: Older MDTs do not distinguish
471 * between nonexistent xattrs and zero length
472 * values in this case. Newer MDTs will return
473 * -ENODATA or set OBD_MD_FLXATTR. */
474 GOTO(out, rc = body->mbo_eadatasize);
477 if (body->mbo_eadatasize == 0) {
478 /* LU-11109: Newer MDTs set OBD_MD_FLXATTR on
479 * success so that we can distinguish between
480 * zero length value and nonexistent xattr.
482 * If OBD_MD_FLXATTR is not set then we keep
483 * the old behavior and return -ENODATA for
484 * getxattr() when mbo_eadatasize is 0. But
485 * -ENODATA only makes sense for getxattr()
486 * and not for listxattr(). */
487 if (body->mbo_valid & OBD_MD_FLXATTR)
489 else if (obd_md_valid == OBD_MD_FLXATTR)
490 GOTO(out, rc = -ENODATA);
495 GOTO(out, rc = body->mbo_eadatasize);
498 ptlrpc_req_finished(*req);
505 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
506 static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
508 struct req_capsule *pill = &req->rq_pill;
509 struct mdt_body *body = md->body;
510 struct posix_acl *acl;
515 if (!body->mbo_aclsize)
518 buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->mbo_aclsize);
523 acl = posix_acl_from_xattr(&init_user_ns, buf, body->mbo_aclsize);
528 CERROR("convert xattr to acl: %d\n", rc);
532 rc = posix_acl_valid(&init_user_ns, acl);
534 CERROR("validate acl: %d\n", rc);
535 posix_acl_release(acl);
543 #define mdc_unpack_acl(req, md) 0
546 int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
547 struct obd_export *dt_exp, struct obd_export *md_exp,
548 struct lustre_md *md)
550 struct req_capsule *pill = &req->rq_pill;
555 memset(md, 0, sizeof(*md));
557 md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
558 LASSERT(md->body != NULL);
560 if (md->body->mbo_valid & OBD_MD_FLEASIZE) {
561 if (!S_ISREG(md->body->mbo_mode)) {
562 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
563 "regular file, but is not\n");
564 GOTO(out, rc = -EPROTO);
567 if (md->body->mbo_eadatasize == 0) {
568 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
569 "but eadatasize 0\n");
570 GOTO(out, rc = -EPROTO);
573 md->layout.lb_len = md->body->mbo_eadatasize;
574 md->layout.lb_buf = req_capsule_server_sized_get(pill,
577 if (md->layout.lb_buf == NULL)
578 GOTO(out, rc = -EPROTO);
579 } else if (md->body->mbo_valid & OBD_MD_FLDIREA) {
580 const union lmv_mds_md *lmv;
583 if (!S_ISDIR(md->body->mbo_mode)) {
584 CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
585 "directory, but is not\n");
586 GOTO(out, rc = -EPROTO);
589 if (md->body->mbo_valid & OBD_MD_MEA) {
590 lmv_size = md->body->mbo_eadatasize;
592 CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
593 "but eadatasize 0\n");
597 lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
600 GOTO(out, rc = -EPROTO);
602 rc = md_unpackmd(md_exp, &md->lmv, lmv, lmv_size);
606 if (rc < (int)sizeof(*md->lmv)) {
607 struct lmv_foreign_md *lfm = md->lfm;
609 /* short (< sizeof(struct lmv_stripe_md))
612 if (lfm->lfm_magic != LMV_MAGIC_FOREIGN) {
614 "lmv size too small: %d < %d\n",
615 rc, (int)sizeof(*md->lmv));
616 GOTO(out, rc = -EPROTO);
621 /* since 2.12.58 intent_getattr fetches default LMV */
622 if (md->body->mbo_valid & OBD_MD_DEFAULT_MEA) {
623 lmv_size = sizeof(struct lmv_user_md);
624 lmv = req_capsule_server_sized_get(pill,
628 GOTO(out, rc = -EPROTO);
630 rc = md_unpackmd(md_exp, &md->default_lmv, lmv,
635 if (rc < (int)sizeof(*md->default_lmv)) {
637 "default lmv size too small: %d < %d\n",
638 rc, (int)sizeof(*md->default_lmv));
639 GOTO(out, rc = -EPROTO);
645 if (md->body->mbo_valid & OBD_MD_FLACL) {
646 /* for ACL, it's possible that FLACL is set but aclsize is zero.
647 * only when aclsize != 0 there's an actual segment for ACL
650 if (md->body->mbo_aclsize) {
651 rc = mdc_unpack_acl(req, md);
654 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
656 md->posix_acl = NULL;
664 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
665 posix_acl_release(md->posix_acl);
671 int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
677 void mdc_replay_open(struct ptlrpc_request *req)
679 struct md_open_data *mod = req->rq_cb_data;
680 struct ptlrpc_request *close_req;
681 struct obd_client_handle *och;
682 struct lustre_handle old_open_handle = { };
683 struct mdt_body *body;
687 DEBUG_REQ(D_ERROR, req,
688 "cannot properly replay without open data");
693 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
694 LASSERT(body != NULL);
696 spin_lock(&req->rq_lock);
698 if (och && och->och_open_handle.cookie)
699 req->rq_early_free_repbuf = 1;
701 req->rq_early_free_repbuf = 0;
702 spin_unlock(&req->rq_lock);
704 if (req->rq_early_free_repbuf) {
705 struct lustre_handle *file_open_handle;
707 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
709 file_open_handle = &och->och_open_handle;
710 CDEBUG(D_HA, "updating handle from %#llx to %#llx\n",
711 file_open_handle->cookie, body->mbo_open_handle.cookie);
712 old_open_handle = *file_open_handle;
713 *file_open_handle = body->mbo_open_handle;
716 close_req = mod->mod_close_req;
718 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
719 struct mdt_ioepoch *epoch;
721 LASSERT(opc == MDS_CLOSE);
722 epoch = req_capsule_client_get(&close_req->rq_pill,
726 if (req->rq_early_free_repbuf)
727 LASSERT(old_open_handle.cookie ==
728 epoch->mio_open_handle.cookie);
730 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
731 epoch->mio_open_handle = body->mbo_open_handle;
736 void mdc_commit_open(struct ptlrpc_request *req)
738 struct md_open_data *mod = req->rq_cb_data;
743 * No need to touch md_open_data::mod_och, it holds a reference on
744 * \var mod and will zero references to each other, \var mod will be
745 * freed after that when md_open_data::mod_och will put the reference.
749 * Do not let open request to disappear as it still may be needed
750 * for close rpc to happen (it may happen on evict only, otherwise
751 * ptlrpc_request::rq_replay does not let mdc_commit_open() to be
752 * called), just mark this rpc as committed to distinguish these 2
753 * cases, see mdc_close() for details. The open request reference will
754 * be put along with freeing \var mod.
756 ptlrpc_request_addref(req);
757 spin_lock(&req->rq_lock);
758 req->rq_committed = 1;
759 spin_unlock(&req->rq_lock);
760 req->rq_cb_data = NULL;
764 int mdc_set_open_replay_data(struct obd_export *exp,
765 struct obd_client_handle *och,
766 struct lookup_intent *it)
768 struct md_open_data *mod;
769 struct mdt_rec_create *rec;
770 struct mdt_body *body;
771 struct ptlrpc_request *open_req = it->it_request;
772 struct obd_import *imp = open_req->rq_import;
775 if (!open_req->rq_replay)
778 rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
779 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
780 LASSERT(rec != NULL);
781 /* Incoming message in my byte order (it's been swabbed). */
782 /* Outgoing messages always in my byte order. */
783 LASSERT(body != NULL);
785 /* Only if the import is replayable, we set replay_open data */
786 if (och && imp->imp_replayable) {
787 mod = obd_mod_alloc();
789 DEBUG_REQ(D_ERROR, open_req,
790 "cannot allocate md_open_data");
795 * Take a reference on \var mod, to be freed on mdc_close().
796 * It protects \var mod from being freed on eviction (commit
797 * callback is called despite rq_replay flag).
798 * Another reference for \var och.
803 spin_lock(&open_req->rq_lock);
806 mod->mod_is_create = it_disposition(it, DISP_OPEN_CREATE) ||
807 it_disposition(it, DISP_OPEN_STRIPE);
808 mod->mod_open_req = open_req;
809 open_req->rq_cb_data = mod;
810 open_req->rq_commit_cb = mdc_commit_open;
811 open_req->rq_early_free_repbuf = 1;
812 spin_unlock(&open_req->rq_lock);
815 rec->cr_fid2 = body->mbo_fid1;
816 rec->cr_open_handle_old = body->mbo_open_handle;
817 open_req->rq_replay_cb = mdc_replay_open;
818 if (!fid_is_sane(&body->mbo_fid1)) {
819 DEBUG_REQ(D_ERROR, open_req,
820 "saving replay request with insane FID " DFID,
821 PFID(&body->mbo_fid1));
825 DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
829 static void mdc_free_open(struct md_open_data *mod)
833 if (mod->mod_is_create == 0 &&
834 imp_connect_disp_stripe(mod->mod_open_req->rq_import))
838 * No reason to asssert here if the open request has
839 * rq_replay == 1. It means that mdc_close failed, and
840 * close request wasn`t sent. It is not fatal to client.
841 * The worst thing is eviction if the client gets open lock
844 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req,
845 "free open request, rq_replay=%d",
846 mod->mod_open_req->rq_replay);
848 ptlrpc_request_committed(mod->mod_open_req, committed);
849 if (mod->mod_close_req)
850 ptlrpc_request_committed(mod->mod_close_req, committed);
853 int mdc_clear_open_replay_data(struct obd_export *exp,
854 struct obd_client_handle *och)
856 struct md_open_data *mod = och->och_mod;
860 * It is possible to not have \var mod in a case of eviction between
861 * lookup and ll_file_open().
866 LASSERT(mod != LP_POISON);
867 LASSERT(mod->mod_open_req != NULL);
869 spin_lock(&mod->mod_open_req->rq_lock);
871 mod->mod_och->och_open_handle.cookie = 0;
872 mod->mod_open_req->rq_early_free_repbuf = 0;
873 spin_unlock(&mod->mod_open_req->rq_lock);
883 static int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
884 struct md_open_data *mod, struct ptlrpc_request **request)
886 struct obd_device *obd = class_exp2obd(exp);
887 struct ptlrpc_request *req;
888 struct req_format *req_fmt;
889 size_t u32_count = 0;
894 CDEBUG(D_INODE, "%s: "DFID" file closed with intent: %x\n",
895 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
898 if (op_data->op_bias & MDS_CLOSE_INTENT) {
899 req_fmt = &RQF_MDS_CLOSE_INTENT;
900 if (op_data->op_bias & MDS_HSM_RELEASE) {
901 /* allocate a FID for volatile file */
902 rc = mdc_fid_alloc(NULL, exp, &op_data->op_fid2,
905 CERROR("%s: "DFID" allocating FID: rc = %d\n",
906 obd->obd_name, PFID(&op_data->op_fid1),
908 /* save the errcode and proceed to close */
912 if (op_data->op_bias & MDS_CLOSE_RESYNC_DONE) {
913 size_t count = op_data->op_data_size / sizeof(__u32);
915 if (count > INLINE_RESYNC_ARRAY_SIZE)
919 req_fmt = &RQF_MDS_CLOSE;
923 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_CLOSE))
926 req = ptlrpc_request_alloc(class_exp2cliimp(exp), req_fmt);
928 /* Ensure that this close's handle is fixed up during replay. */
929 if (likely(mod != NULL)) {
930 LASSERTF(mod->mod_open_req != NULL &&
931 mod->mod_open_req->rq_type != LI_POISON,
932 "POISONED open %p!\n", mod->mod_open_req);
934 mod->mod_close_req = req;
936 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req, "matched open");
937 /* We no longer want to preserve this open for replay even
938 * though the open was committed. b=3632, b=3633 */
939 spin_lock(&mod->mod_open_req->rq_lock);
940 mod->mod_open_req->rq_replay = 0;
941 spin_unlock(&mod->mod_open_req->rq_lock);
943 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
947 * TODO: repeat close after errors
949 CWARN("%s: close of FID "DFID" failed, file reference will be "
950 "dropped when this client unmounts or is evicted\n",
951 obd->obd_name, PFID(&op_data->op_fid1));
952 GOTO(out, rc = -ENOMEM);
956 req_capsule_set_size(&req->rq_pill, &RMF_U32, RCL_CLIENT,
957 u32_count * sizeof(__u32));
959 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
961 ptlrpc_request_free(req);
966 /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
967 * portal whose threads are not taking any DLM locks and are therefore
968 * always progressing */
969 req->rq_request_portal = MDS_READPAGE_PORTAL;
970 ptlrpc_at_set_req_timeout(req);
972 if (!(exp_connect_flags2(exp) & OBD_CONNECT2_LSOM))
973 op_data->op_xvalid &= ~(OP_XVALID_LAZYSIZE |
974 OP_XVALID_LAZYBLOCKS);
976 mdc_close_pack(req, op_data);
978 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
979 obd->u.cli.cl_default_mds_easize);
981 ptlrpc_request_set_replen(req);
983 mdc_get_mod_rpc_slot(req, NULL);
984 rc = ptlrpc_queue_wait(req);
985 mdc_put_mod_rpc_slot(req, NULL);
987 if (req->rq_repmsg == NULL) {
988 CDEBUG(D_RPCTRACE, "request %p failed to send: rc = %d\n", req,
991 rc = req->rq_status ?: -EIO;
992 } else if (rc == 0 || rc == -EAGAIN) {
993 struct mdt_body *body;
995 rc = lustre_msg_get_status(req->rq_repmsg);
996 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
997 DEBUG_REQ(D_ERROR, req,
998 "type = PTL_RPC_MSG_ERR: rc = %d", rc);
1002 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1005 } else if (rc == -ESTALE) {
1007 * it can be allowed error after 3633 if open was committed and
1008 * server failed before close was sent. Let's check if mod
1009 * exists and return no error in that case
1012 DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc);
1013 LASSERT(mod->mod_open_req != NULL);
1014 if (mod->mod_open_req->rq_committed)
1022 mod->mod_close_req = NULL;
1023 /* Since now, mod is accessed through open_req only,
1024 * thus close req does not keep a reference on mod anymore. */
1029 RETURN(rc < 0 ? rc : saved_rc);
1032 static int mdc_getpage(struct obd_export *exp, const struct lu_fid *fid,
1033 u64 offset, struct page **pages, int npages,
1034 struct ptlrpc_request **request)
1036 struct ptlrpc_request *req;
1037 struct ptlrpc_bulk_desc *desc;
1046 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
1050 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
1052 ptlrpc_request_free(req);
1056 req->rq_request_portal = MDS_READPAGE_PORTAL;
1057 ptlrpc_at_set_req_timeout(req);
1059 desc = ptlrpc_prep_bulk_imp(req, npages, 1,
1060 PTLRPC_BULK_PUT_SINK | PTLRPC_BULK_BUF_KIOV,
1062 &ptlrpc_bulk_kiov_pin_ops);
1064 ptlrpc_req_finished(req);
1068 /* NB req now owns desc and will free it when it gets freed */
1069 for (i = 0; i < npages; i++)
1070 desc->bd_frag_ops->add_kiov_frag(desc, pages[i], 0,
1073 mdc_readdir_pack(req, offset, PAGE_SIZE * npages, fid);
1075 ptlrpc_request_set_replen(req);
1076 rc = ptlrpc_queue_wait(req);
1078 ptlrpc_req_finished(req);
1079 if (rc != -ETIMEDOUT)
1083 if (!client_should_resend(resends, &exp->exp_obd->u.cli)) {
1084 CERROR("%s: too many resend retries: rc = %d\n",
1085 exp->exp_obd->obd_name, -EIO);
1093 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
1094 req->rq_bulk->bd_nob_transferred);
1096 ptlrpc_req_finished(req);
1100 if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) {
1101 CERROR("%s: unexpected bytes transferred: %d (%ld expected)\n",
1102 exp->exp_obd->obd_name, req->rq_bulk->bd_nob_transferred,
1103 PAGE_SIZE * npages);
1104 ptlrpc_req_finished(req);
1112 static void mdc_release_page(struct page *page, int remove)
1116 if (likely(page->mapping != NULL))
1117 delete_from_page_cache(page);
1123 static struct page *mdc_page_locate(struct address_space *mapping, __u64 *hash,
1124 __u64 *start, __u64 *end, int hash64)
1127 * Complement of hash is used as an index so that
1128 * radix_tree_gang_lookup() can be used to find a page with starting
1129 * hash _smaller_ than one we are looking for.
1131 unsigned long offset = hash_x_index(*hash, hash64);
1133 unsigned long flags;
1136 xa_lock_irqsave(&mapping->i_pages, flags);
1137 found = radix_tree_gang_lookup(&mapping->page_tree,
1138 (void **)&page, offset, 1);
1139 if (found > 0 && !radix_tree_exceptional_entry(page)) {
1140 struct lu_dirpage *dp;
1143 xa_unlock_irqrestore(&mapping->i_pages, flags);
1145 * In contrast to find_lock_page() we are sure that directory
1146 * page cannot be truncated (while DLM lock is held) and,
1147 * hence, can avoid restart.
1149 * In fact, page cannot be locked here at all, because
1150 * mdc_read_page_remote does synchronous io.
1152 wait_on_page_locked(page);
1153 if (PageUptodate(page)) {
1155 if (BITS_PER_LONG == 32 && hash64) {
1156 *start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1157 *end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1158 *hash = *hash >> 32;
1160 *start = le64_to_cpu(dp->ldp_hash_start);
1161 *end = le64_to_cpu(dp->ldp_hash_end);
1163 if (unlikely(*start == 1 && *hash == 0))
1166 LASSERTF(*start <= *hash, "start = %#llx"
1167 ",end = %#llx,hash = %#llx\n",
1168 *start, *end, *hash);
1169 CDEBUG(D_VFSTRACE, "offset %lx [%#llx %#llx],"
1170 " hash %#llx\n", offset, *start, *end, *hash);
1173 mdc_release_page(page, 0);
1175 } else if (*end != *start && *hash == *end) {
1177 * upon hash collision, remove this page,
1178 * otherwise put page reference, and
1179 * mdc_read_page_remote() will issue RPC to
1180 * fetch the page we want.
1183 mdc_release_page(page,
1184 le32_to_cpu(dp->ldp_flags) & LDF_COLLIDE);
1189 page = ERR_PTR(-EIO);
1192 xa_unlock_irqrestore(&mapping->i_pages, flags);
1199 * Adjust a set of pages, each page containing an array of lu_dirpages,
1200 * so that each page can be used as a single logical lu_dirpage.
1202 * A lu_dirpage is laid out as follows, where s = ldp_hash_start,
1203 * e = ldp_hash_end, f = ldp_flags, p = padding, and each "ent" is a
1204 * struct lu_dirent. It has size up to LU_PAGE_SIZE. The ldp_hash_end
1205 * value is used as a cookie to request the next lu_dirpage in a
1206 * directory listing that spans multiple pages (two in this example):
1209 * .|--------v------- -----.
1210 * |s|e|f|p|ent|ent| ... |ent|
1211 * '--|-------------- -----' Each PAGE contains a single
1212 * '------. lu_dirpage.
1213 * .---------v------- -----.
1214 * |s|e|f|p|ent| 0 | ... | 0 |
1215 * '----------------- -----'
1217 * However, on hosts where the native VM page size (PAGE_SIZE) is
1218 * larger than LU_PAGE_SIZE, a single host page may contain multiple
1219 * lu_dirpages. After reading the lu_dirpages from the MDS, the
1220 * ldp_hash_end of the first lu_dirpage refers to the one immediately
1221 * after it in the same PAGE (arrows simplified for brevity, but
1222 * in general e0==s1, e1==s2, etc.):
1224 * .-------------------- -----.
1225 * |s0|e0|f0|p|ent|ent| ... |ent|
1226 * |---v---------------- -----|
1227 * |s1|e1|f1|p|ent|ent| ... |ent|
1228 * |---v---------------- -----| Here, each PAGE contains
1229 * ... multiple lu_dirpages.
1230 * |---v---------------- -----|
1231 * |s'|e'|f'|p|ent|ent| ... |ent|
1232 * '---|---------------- -----'
1234 * .----------------------------.
1237 * This structure is transformed into a single logical lu_dirpage as follows:
1239 * - Replace e0 with e' so the request for the next lu_dirpage gets the page
1240 * labeled 'next PAGE'.
1242 * - Copy the LDF_COLLIDE flag from f' to f0 to correctly reflect whether
1243 * a hash collision with the next page exists.
1245 * - Adjust the lde_reclen of the ending entry of each lu_dirpage to span
1246 * to the first entry of the next lu_dirpage.
1248 #if PAGE_SIZE > LU_PAGE_SIZE
1249 static void mdc_adjust_dirpages(struct page **pages, int cfs_pgs, int lu_pgs)
1253 for (i = 0; i < cfs_pgs; i++) {
1254 struct lu_dirpage *dp = kmap(pages[i]);
1255 struct lu_dirpage *first = dp;
1256 struct lu_dirent *end_dirent = NULL;
1257 struct lu_dirent *ent;
1258 __u64 hash_end = dp->ldp_hash_end;
1259 __u32 flags = dp->ldp_flags;
1261 while (--lu_pgs > 0) {
1262 ent = lu_dirent_start(dp);
1263 for (end_dirent = ent; ent != NULL;
1264 end_dirent = ent, ent = lu_dirent_next(ent));
1266 /* Advance dp to next lu_dirpage. */
1267 dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE);
1269 /* Check if we've reached the end of the PAGE. */
1270 if (!((unsigned long)dp & ~PAGE_MASK))
1273 /* Save the hash and flags of this lu_dirpage. */
1274 hash_end = dp->ldp_hash_end;
1275 flags = dp->ldp_flags;
1277 /* Check if lu_dirpage contains no entries. */
1278 if (end_dirent == NULL)
1281 /* Enlarge the end entry lde_reclen from 0 to
1282 * first entry of next lu_dirpage. */
1283 LASSERT(le16_to_cpu(end_dirent->lde_reclen) == 0);
1284 end_dirent->lde_reclen =
1285 cpu_to_le16((char *)(dp->ldp_entries) -
1286 (char *)end_dirent);
1289 first->ldp_hash_end = hash_end;
1290 first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE);
1291 first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE);
1295 LASSERTF(lu_pgs == 0, "left = %d\n", lu_pgs);
1298 #define mdc_adjust_dirpages(pages, cfs_pgs, lu_pgs) do {} while (0)
1299 #endif /* PAGE_SIZE > LU_PAGE_SIZE */
1301 /* parameters for readdir page */
1302 struct readpage_param {
1303 struct md_op_data *rp_mod;
1306 struct obd_export *rp_exp;
1307 struct md_callback *rp_cb;
1311 * Read pages from server.
1313 * Page in MDS_READPAGE RPC is packed in LU_PAGE_SIZE, and each page contains
1314 * a header lu_dirpage which describes the start/end hash, and whether this
1315 * page is empty (contains no dir entry) or hash collide with next page.
1316 * After client receives reply, several pages will be integrated into dir page
1317 * in PAGE_SIZE (if PAGE_SIZE greater than LU_PAGE_SIZE), and the
1318 * lu_dirpage for this integrated page will be adjusted.
1320 static int mdc_read_page_remote(void *data, struct page *page0)
1322 struct readpage_param *rp = data;
1323 struct page **page_pool;
1325 struct lu_dirpage *dp;
1326 struct md_op_data *op_data = rp->rp_mod;
1327 struct ptlrpc_request *req;
1329 struct inode *inode;
1331 int rd_pgs = 0; /* number of pages actually read */
1337 max_pages = rp->rp_exp->exp_obd->u.cli.cl_max_pages_per_rpc;
1338 inode = op_data->op_data;
1339 fid = &op_data->op_fid1;
1340 LASSERT(inode != NULL);
1342 OBD_ALLOC(page_pool, sizeof(page_pool[0]) * max_pages);
1343 if (page_pool != NULL) {
1344 page_pool[0] = page0;
1350 for (npages = 1; npages < max_pages; npages++) {
1351 page = __page_cache_alloc(mapping_gfp_mask(inode->i_mapping)
1355 page_pool[npages] = page;
1358 rc = mdc_getpage(rp->rp_exp, fid, rp->rp_off, page_pool, npages, &req);
1360 /* page0 is special, which was added into page cache early */
1361 delete_from_page_cache(page0);
1365 rd_pgs = (req->rq_bulk->bd_nob_transferred + PAGE_SIZE - 1) >>
1367 lu_pgs = req->rq_bulk->bd_nob_transferred >> LU_PAGE_SHIFT;
1368 LASSERT(!(req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK));
1370 CDEBUG(D_INODE, "read %d(%d) pages\n", rd_pgs, lu_pgs);
1372 mdc_adjust_dirpages(page_pool, rd_pgs, lu_pgs);
1374 SetPageUptodate(page0);
1378 ptlrpc_req_finished(req);
1379 CDEBUG(D_CACHE, "read %d/%d pages\n", rd_pgs, npages);
1380 for (i = 1; i < npages; i++) {
1381 unsigned long offset;
1385 page = page_pool[i];
1387 if (rc < 0 || i >= rd_pgs) {
1392 SetPageUptodate(page);
1395 hash = le64_to_cpu(dp->ldp_hash_start);
1398 offset = hash_x_index(hash, rp->rp_hash64);
1400 prefetchw(&page->flags);
1401 ret = add_to_page_cache_lru(page, inode->i_mapping, offset,
1406 CDEBUG(D_VFSTRACE, "page %lu add to page cache failed:"
1407 " rc = %d\n", offset, ret);
1411 if (page_pool != &page0)
1412 OBD_FREE(page_pool, sizeof(page_pool[0]) * max_pages);
1418 * Read dir page from cache first, if it can not find it, read it from
1419 * server and add into the cache.
1421 * \param[in] exp MDC export
1422 * \param[in] op_data client MD stack parameters, transfering parameters
1423 * between different layers on client MD stack.
1424 * \param[in] cb_op callback required for ldlm lock enqueue during
1426 * \param[in] hash_offset the hash offset of the page to be read
1427 * \param[in] ppage the page to be read
1429 * retval = 0 get the page successfully
1430 * errno(<0) get the page failed
1432 static int mdc_read_page(struct obd_export *exp, struct md_op_data *op_data,
1433 struct md_callback *cb_op, __u64 hash_offset,
1434 struct page **ppage)
1436 struct lookup_intent it = { .it_op = IT_READDIR };
1438 struct inode *dir = op_data->op_data;
1439 struct address_space *mapping;
1440 struct lu_dirpage *dp;
1443 struct lustre_handle lockh;
1444 struct ptlrpc_request *enq_req = NULL;
1445 struct readpage_param rp_param;
1452 LASSERT(dir != NULL);
1453 mapping = dir->i_mapping;
1455 rc = mdc_intent_lock(exp, op_data, &it, &enq_req,
1456 cb_op->md_blocking_ast, 0);
1457 if (enq_req != NULL)
1458 ptlrpc_req_finished(enq_req);
1461 CERROR("%s: "DFID" lock enqueue fails: rc = %d\n",
1462 exp->exp_obd->obd_name, PFID(&op_data->op_fid1), rc);
1467 lockh.cookie = it.it_lock_handle;
1468 mdc_set_lock_data(exp, &lockh, dir, NULL);
1470 rp_param.rp_off = hash_offset;
1471 rp_param.rp_hash64 = op_data->op_cli_flags & CLI_HASH64;
1472 page = mdc_page_locate(mapping, &rp_param.rp_off, &start, &end,
1473 rp_param.rp_hash64);
1475 CERROR("%s: dir page locate: "DFID" at %llu: rc %ld\n",
1476 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1477 rp_param.rp_off, PTR_ERR(page));
1478 GOTO(out_unlock, rc = PTR_ERR(page));
1479 } else if (page != NULL) {
1481 * XXX nikita: not entirely correct handling of a corner case:
1482 * suppose hash chain of entries with hash value HASH crosses
1483 * border between pages P0 and P1. First both P0 and P1 are
1484 * cached, seekdir() is called for some entry from the P0 part
1485 * of the chain. Later P0 goes out of cache. telldir(HASH)
1486 * happens and finds P1, as it starts with matching hash
1487 * value. Remaining entries from P0 part of the chain are
1488 * skipped. (Is that really a bug?)
1490 * Possible solutions: 0. don't cache P1 is such case, handle
1491 * it as an "overflow" page. 1. invalidate all pages at
1492 * once. 2. use HASH|1 as an index for P1.
1494 GOTO(hash_collision, page);
1497 rp_param.rp_exp = exp;
1498 rp_param.rp_mod = op_data;
1499 page = read_cache_page(mapping,
1500 hash_x_index(rp_param.rp_off,
1501 rp_param.rp_hash64),
1502 mdc_read_page_remote, &rp_param);
1504 CDEBUG(D_INFO, "%s: read cache page: "DFID" at %llu: %ld\n",
1505 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1506 rp_param.rp_off, PTR_ERR(page));
1507 GOTO(out_unlock, rc = PTR_ERR(page));
1510 wait_on_page_locked(page);
1512 if (!PageUptodate(page)) {
1513 CERROR("%s: page not updated: "DFID" at %llu: rc %d\n",
1514 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1515 rp_param.rp_off, -5);
1518 if (!PageChecked(page))
1519 SetPageChecked(page);
1520 if (PageError(page)) {
1521 CERROR("%s: page error: "DFID" at %llu: rc %d\n",
1522 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1523 rp_param.rp_off, -5);
1528 dp = page_address(page);
1529 if (BITS_PER_LONG == 32 && rp_param.rp_hash64) {
1530 start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1531 end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1532 rp_param.rp_off = hash_offset >> 32;
1534 start = le64_to_cpu(dp->ldp_hash_start);
1535 end = le64_to_cpu(dp->ldp_hash_end);
1536 rp_param.rp_off = hash_offset;
1539 LASSERT(start == rp_param.rp_off);
1540 CWARN("Page-wide hash collision: %#lx\n", (unsigned long)end);
1541 #if BITS_PER_LONG == 32
1542 CWARN("Real page-wide hash collision at [%llu %llu] with "
1543 "hash %llu\n", le64_to_cpu(dp->ldp_hash_start),
1544 le64_to_cpu(dp->ldp_hash_end), hash_offset);
1548 * Fetch whole overflow chain...
1556 ldlm_lock_decref(&lockh, it.it_lock_mode);
1560 mdc_release_page(page, 1);
1565 static int mdc_statfs_interpret(const struct lu_env *env,
1566 struct ptlrpc_request *req, void *args, int rc)
1568 struct obd_info *oinfo = args;
1569 struct obd_statfs *osfs;
1572 osfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1576 oinfo->oi_osfs = osfs;
1578 CDEBUG(D_CACHE, "blocks=%llu free=%llu avail=%llu "
1579 "objects=%llu free=%llu state=%x\n",
1580 osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
1581 osfs->os_files, osfs->os_ffree, osfs->os_state);
1584 oinfo->oi_cb_up(oinfo, rc);
1589 static int mdc_statfs_async(struct obd_export *exp,
1590 struct obd_info *oinfo, time64_t max_age,
1591 struct ptlrpc_request_set *unused)
1593 struct ptlrpc_request *req;
1594 struct obd_info *aa;
1596 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_STATFS,
1597 LUSTRE_MDS_VERSION, MDS_STATFS);
1601 ptlrpc_request_set_replen(req);
1602 req->rq_interpret_reply = mdc_statfs_interpret;
1604 aa = ptlrpc_req_async_args(aa, req);
1607 ptlrpcd_add_req(req);
1612 static int mdc_statfs(const struct lu_env *env,
1613 struct obd_export *exp, struct obd_statfs *osfs,
1614 time64_t max_age, __u32 flags)
1616 struct obd_device *obd = class_exp2obd(exp);
1617 struct req_format *fmt;
1618 struct ptlrpc_request *req;
1619 struct obd_statfs *msfs;
1620 struct obd_import *imp = NULL;
1625 * Since the request might also come from lprocfs, so we need
1626 * sync this with client_disconnect_export Bug15684
1628 down_read(&obd->u.cli.cl_sem);
1629 if (obd->u.cli.cl_import)
1630 imp = class_import_get(obd->u.cli.cl_import);
1631 up_read(&obd->u.cli.cl_sem);
1635 fmt = &RQF_MDS_STATFS;
1636 if ((exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS) &&
1637 (flags & OBD_STATFS_SUM))
1638 fmt = &RQF_MDS_STATFS_NEW;
1639 req = ptlrpc_request_alloc_pack(imp, fmt, LUSTRE_MDS_VERSION,
1642 GOTO(output, rc = -ENOMEM);
1644 if ((flags & OBD_STATFS_SUM) &&
1645 (exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS)) {
1646 /* request aggregated states */
1647 struct mdt_body *body;
1649 body = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
1651 GOTO(out, rc = -EPROTO);
1652 body->mbo_valid = OBD_MD_FLAGSTATFS;
1655 ptlrpc_request_set_replen(req);
1657 if (flags & OBD_STATFS_NODELAY) {
1658 /* procfs requests not want stay in wait for avoid deadlock */
1659 req->rq_no_resend = 1;
1660 req->rq_no_delay = 1;
1663 rc = ptlrpc_queue_wait(req);
1665 /* check connection error first */
1666 if (imp->imp_connect_error)
1667 rc = imp->imp_connect_error;
1671 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1673 GOTO(out, rc = -EPROTO);
1678 ptlrpc_req_finished(req);
1680 class_import_put(imp);
1684 static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
1686 __u32 keylen, vallen;
1690 if (gf->gf_pathlen > PATH_MAX)
1691 RETURN(-ENAMETOOLONG);
1692 if (gf->gf_pathlen < 2)
1695 /* Key is KEY_FID2PATH + getinfo_fid2path description */
1696 keylen = cfs_size_round(sizeof(KEY_FID2PATH) + sizeof(*gf) +
1697 sizeof(struct lu_fid));
1698 OBD_ALLOC(key, keylen);
1701 memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
1702 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
1703 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf),
1704 gf->gf_u.gf_root_fid, sizeof(struct lu_fid));
1705 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
1706 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
1708 if (!fid_is_sane(&gf->gf_fid))
1709 GOTO(out, rc = -EINVAL);
1711 /* Val is struct getinfo_fid2path result plus path */
1712 vallen = sizeof(*gf) + gf->gf_pathlen;
1714 rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf);
1715 if (rc != 0 && rc != -EREMOTE)
1718 if (vallen <= sizeof(*gf))
1719 GOTO(out, rc = -EPROTO);
1720 if (vallen > sizeof(*gf) + gf->gf_pathlen)
1721 GOTO(out, rc = -EOVERFLOW);
1723 CDEBUG(D_IOCTL, "path got "DFID" from %llu #%d: %s\n",
1724 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno,
1725 gf->gf_pathlen < 512 ? gf->gf_u.gf_path :
1726 /* only log the last 512 characters of the path */
1727 gf->gf_u.gf_path + gf->gf_pathlen - 512);
1730 OBD_FREE(key, keylen);
1734 static int mdc_ioc_hsm_progress(struct obd_export *exp,
1735 struct hsm_progress_kernel *hpk)
1737 struct obd_import *imp = class_exp2cliimp(exp);
1738 struct hsm_progress_kernel *req_hpk;
1739 struct ptlrpc_request *req;
1743 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS,
1744 LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS);
1746 GOTO(out, rc = -ENOMEM);
1748 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1750 /* Copy hsm_progress struct */
1751 req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS);
1752 if (req_hpk == NULL)
1753 GOTO(out, rc = -EPROTO);
1756 req_hpk->hpk_errval = lustre_errno_hton(hpk->hpk_errval);
1758 ptlrpc_request_set_replen(req);
1760 mdc_get_mod_rpc_slot(req, NULL);
1761 rc = ptlrpc_queue_wait(req);
1762 mdc_put_mod_rpc_slot(req, NULL);
1766 ptlrpc_req_finished(req);
1770 * Send hsm_ct_register to MDS
1772 * \param[in] imp import
1773 * \param[in] archive_count if in bitmap format, it is the bitmap,
1774 * else it is the count of archive_ids
1775 * \param[in] archives if in bitmap format, it is NULL,
1776 * else it is archive_id lists
1778 static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archive_count,
1781 struct ptlrpc_request *req;
1782 __u32 *archive_array;
1783 size_t archives_size;
1787 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_CT_REGISTER);
1791 if (archives != NULL)
1792 archives_size = sizeof(*archive_array) * archive_count;
1794 archives_size = sizeof(archive_count);
1796 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_ARCHIVE,
1797 RCL_CLIENT, archives_size);
1799 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_CT_REGISTER);
1801 ptlrpc_request_free(req);
1805 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1807 archive_array = req_capsule_client_get(&req->rq_pill,
1808 &RMF_MDS_HSM_ARCHIVE);
1809 if (archive_array == NULL)
1810 GOTO(out, rc = -EPROTO);
1812 if (archives != NULL)
1813 memcpy(archive_array, archives, archives_size);
1815 *archive_array = archive_count;
1817 ptlrpc_request_set_replen(req);
1819 rc = mdc_queue_wait(req);
1822 ptlrpc_req_finished(req);
1826 static int mdc_ioc_hsm_current_action(struct obd_export *exp,
1827 struct md_op_data *op_data)
1829 struct hsm_current_action *hca = op_data->op_data;
1830 struct hsm_current_action *req_hca;
1831 struct ptlrpc_request *req;
1835 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1836 &RQF_MDS_HSM_ACTION);
1840 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION);
1842 ptlrpc_request_free(req);
1846 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1847 op_data->op_suppgids[0], 0);
1849 ptlrpc_request_set_replen(req);
1851 rc = mdc_queue_wait(req);
1855 req_hca = req_capsule_server_get(&req->rq_pill,
1856 &RMF_MDS_HSM_CURRENT_ACTION);
1857 if (req_hca == NULL)
1858 GOTO(out, rc = -EPROTO);
1864 ptlrpc_req_finished(req);
1868 static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp)
1870 struct ptlrpc_request *req;
1874 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER,
1876 MDS_HSM_CT_UNREGISTER);
1878 GOTO(out, rc = -ENOMEM);
1880 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1882 ptlrpc_request_set_replen(req);
1884 rc = mdc_queue_wait(req);
1887 ptlrpc_req_finished(req);
1891 static int mdc_ioc_hsm_state_get(struct obd_export *exp,
1892 struct md_op_data *op_data)
1894 struct hsm_user_state *hus = op_data->op_data;
1895 struct hsm_user_state *req_hus;
1896 struct ptlrpc_request *req;
1900 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1901 &RQF_MDS_HSM_STATE_GET);
1905 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET);
1907 ptlrpc_request_free(req);
1911 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1912 op_data->op_suppgids[0], 0);
1914 ptlrpc_request_set_replen(req);
1916 rc = mdc_queue_wait(req);
1920 req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE);
1921 if (req_hus == NULL)
1922 GOTO(out, rc = -EPROTO);
1928 ptlrpc_req_finished(req);
1932 static int mdc_ioc_hsm_state_set(struct obd_export *exp,
1933 struct md_op_data *op_data)
1935 struct hsm_state_set *hss = op_data->op_data;
1936 struct hsm_state_set *req_hss;
1937 struct ptlrpc_request *req;
1941 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1942 &RQF_MDS_HSM_STATE_SET);
1946 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET);
1948 ptlrpc_request_free(req);
1952 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1953 op_data->op_suppgids[0], 0);
1956 req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET);
1957 if (req_hss == NULL)
1958 GOTO(out, rc = -EPROTO);
1961 ptlrpc_request_set_replen(req);
1963 mdc_get_mod_rpc_slot(req, NULL);
1964 rc = ptlrpc_queue_wait(req);
1965 mdc_put_mod_rpc_slot(req, NULL);
1969 ptlrpc_req_finished(req);
1973 static int mdc_ioc_hsm_request(struct obd_export *exp,
1974 struct hsm_user_request *hur)
1976 struct obd_import *imp = class_exp2cliimp(exp);
1977 struct ptlrpc_request *req;
1978 struct hsm_request *req_hr;
1979 struct hsm_user_item *req_hui;
1984 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST);
1986 GOTO(out, rc = -ENOMEM);
1988 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT,
1989 hur->hur_request.hr_itemcount
1990 * sizeof(struct hsm_user_item));
1991 req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT,
1992 hur->hur_request.hr_data_len);
1994 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST);
1996 ptlrpc_request_free(req);
2000 mdc_pack_body(req, NULL, 0, 0, -1, 0);
2002 /* Copy hsm_request struct */
2003 req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST);
2005 GOTO(out, rc = -EPROTO);
2006 *req_hr = hur->hur_request;
2008 /* Copy hsm_user_item structs */
2009 req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM);
2010 if (req_hui == NULL)
2011 GOTO(out, rc = -EPROTO);
2012 memcpy(req_hui, hur->hur_user_item,
2013 hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item));
2015 /* Copy opaque field */
2016 req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA);
2017 if (req_opaque == NULL)
2018 GOTO(out, rc = -EPROTO);
2019 memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len);
2021 ptlrpc_request_set_replen(req);
2023 mdc_get_mod_rpc_slot(req, NULL);
2024 rc = ptlrpc_queue_wait(req);
2025 mdc_put_mod_rpc_slot(req, NULL);
2030 ptlrpc_req_finished(req);
2034 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2035 struct lustre_kernelcomm *lk);
2037 static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp,
2038 struct obd_quotactl *oqctl)
2040 struct ptlrpc_request *req;
2041 struct obd_quotactl *oqc;
2045 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
2046 &RQF_MDS_QUOTACTL, LUSTRE_MDS_VERSION,
2051 oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
2054 ptlrpc_request_set_replen(req);
2055 ptlrpc_at_set_req_timeout(req);
2057 rc = ptlrpc_queue_wait(req);
2059 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
2061 if (req->rq_repmsg &&
2062 (oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL))) {
2065 CERROR ("Can't unpack obd_quotactl\n");
2068 ptlrpc_req_finished(req);
2073 static int mdc_ioc_swap_layouts(struct obd_export *exp,
2074 struct md_op_data *op_data)
2076 struct list_head cancels = LIST_HEAD_INIT(cancels);
2077 struct ptlrpc_request *req;
2079 struct mdc_swap_layouts *msl, *payload;
2082 msl = op_data->op_data;
2084 /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the
2085 * first thing it will do is to cancel the 2 layout
2086 * locks held by this client.
2087 * So the client must cancel its layout locks on the 2 fids
2088 * with the request RPC to avoid extra RPC round trips.
2090 count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels,
2091 LCK_EX, MDS_INODELOCK_LAYOUT |
2092 MDS_INODELOCK_XATTR);
2093 count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels,
2094 LCK_EX, MDS_INODELOCK_LAYOUT |
2095 MDS_INODELOCK_XATTR);
2097 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2098 &RQF_MDS_SWAP_LAYOUTS);
2100 ldlm_lock_list_put(&cancels, l_bl_ast, count);
2104 rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count);
2106 ptlrpc_request_free(req);
2110 mdc_swap_layouts_pack(req, op_data);
2112 payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS);
2117 ptlrpc_request_set_replen(req);
2119 rc = ptlrpc_queue_wait(req);
2125 ptlrpc_req_finished(req);
2129 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2130 void *karg, void __user *uarg)
2132 struct obd_device *obd = exp->exp_obd;
2133 struct obd_ioctl_data *data = karg;
2134 struct obd_import *imp = obd->u.cli.cl_import;
2138 if (!try_module_get(THIS_MODULE)) {
2139 CERROR("%s: cannot get module '%s'\n", obd->obd_name,
2140 module_name(THIS_MODULE));
2144 case OBD_IOC_FID2PATH:
2145 rc = mdc_ioc_fid2path(exp, karg);
2147 case LL_IOC_HSM_CT_START:
2148 rc = mdc_ioc_hsm_ct_start(exp, karg);
2149 /* ignore if it was already registered on this MDS. */
2153 case LL_IOC_HSM_PROGRESS:
2154 rc = mdc_ioc_hsm_progress(exp, karg);
2156 case LL_IOC_HSM_STATE_GET:
2157 rc = mdc_ioc_hsm_state_get(exp, karg);
2159 case LL_IOC_HSM_STATE_SET:
2160 rc = mdc_ioc_hsm_state_set(exp, karg);
2162 case LL_IOC_HSM_ACTION:
2163 rc = mdc_ioc_hsm_current_action(exp, karg);
2165 case LL_IOC_HSM_REQUEST:
2166 rc = mdc_ioc_hsm_request(exp, karg);
2168 case OBD_IOC_CLIENT_RECOVER:
2169 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0);
2173 case IOC_OSC_SET_ACTIVE:
2174 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
2177 * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by
2178 * LMV instead of MDC. But when the cluster is upgraded from 1.8,
2179 * there'd be no LMV layer thus we might be called here. Eventually
2180 * this code should be removed.
2183 case IOC_OBD_STATFS: {
2184 struct obd_statfs stat_buf = {0};
2186 if (*((__u32 *) data->ioc_inlbuf2) != 0)
2187 GOTO(out, rc = -ENODEV);
2190 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
2191 min((int)data->ioc_plen2,
2192 (int)sizeof(struct obd_uuid))))
2193 GOTO(out, rc = -EFAULT);
2195 rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf,
2196 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
2201 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
2202 min((int) data->ioc_plen1,
2203 (int) sizeof(stat_buf))))
2204 GOTO(out, rc = -EFAULT);
2208 case OBD_IOC_QUOTACTL: {
2209 struct if_quotactl *qctl = karg;
2210 struct obd_quotactl *oqctl;
2212 OBD_ALLOC_PTR(oqctl);
2214 GOTO(out, rc = -ENOMEM);
2216 QCTL_COPY(oqctl, qctl);
2217 rc = obd_quotactl(exp, oqctl);
2219 QCTL_COPY(qctl, oqctl);
2220 qctl->qc_valid = QC_MDTIDX;
2221 qctl->obd_uuid = obd->u.cli.cl_target_uuid;
2224 OBD_FREE_PTR(oqctl);
2227 case LL_IOC_GET_CONNECT_FLAGS:
2228 if (copy_to_user(uarg, exp_connect_flags_ptr(exp),
2229 sizeof(*exp_connect_flags_ptr(exp))))
2230 GOTO(out, rc = -EFAULT);
2233 case LL_IOC_LOV_SWAP_LAYOUTS:
2234 rc = mdc_ioc_swap_layouts(exp, karg);
2237 CERROR("unrecognised ioctl: cmd = %#x\n", cmd);
2238 GOTO(out, rc = -ENOTTY);
2241 module_put(THIS_MODULE);
2246 static int mdc_get_info_rpc(struct obd_export *exp,
2247 u32 keylen, void *key,
2248 u32 vallen, void *val)
2250 struct obd_import *imp = class_exp2cliimp(exp);
2251 struct ptlrpc_request *req;
2256 req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
2260 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
2261 RCL_CLIENT, keylen);
2262 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
2263 RCL_CLIENT, sizeof(vallen));
2265 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
2267 ptlrpc_request_free(req);
2271 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
2272 memcpy(tmp, key, keylen);
2273 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
2274 memcpy(tmp, &vallen, sizeof(vallen));
2276 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
2277 RCL_SERVER, vallen);
2278 ptlrpc_request_set_replen(req);
2280 rc = ptlrpc_queue_wait(req);
2281 /* -EREMOTE means the get_info result is partial, and it needs to
2282 * continue on another MDT, see fid2path part in lmv_iocontrol */
2283 if (rc == 0 || rc == -EREMOTE) {
2284 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
2285 memcpy(val, tmp, vallen);
2286 if (ptlrpc_rep_need_swab(req)) {
2287 if (KEY_IS(KEY_FID2PATH))
2288 lustre_swab_fid2path(val);
2291 ptlrpc_req_finished(req);
2296 static void lustre_swab_hai(struct hsm_action_item *h)
2298 __swab32s(&h->hai_len);
2299 __swab32s(&h->hai_action);
2300 lustre_swab_lu_fid(&h->hai_fid);
2301 lustre_swab_lu_fid(&h->hai_dfid);
2302 __swab64s(&h->hai_cookie);
2303 __swab64s(&h->hai_extent.offset);
2304 __swab64s(&h->hai_extent.length);
2305 __swab64s(&h->hai_gid);
2308 static void lustre_swab_hal(struct hsm_action_list *h)
2310 struct hsm_action_item *hai;
2313 __swab32s(&h->hal_version);
2314 __swab32s(&h->hal_count);
2315 __swab32s(&h->hal_archive_id);
2316 __swab64s(&h->hal_flags);
2318 for (i = 0; i < h->hal_count; i++, hai = hai_next(hai))
2319 lustre_swab_hai(hai);
2322 static void lustre_swab_kuch(struct kuc_hdr *l)
2324 __swab16s(&l->kuc_magic);
2325 /* __u8 l->kuc_transport */
2326 __swab16s(&l->kuc_msgtype);
2327 __swab16s(&l->kuc_msglen);
2330 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2331 struct lustre_kernelcomm *lk)
2333 struct obd_import *imp = class_exp2cliimp(exp);
2336 if (lk->lk_group != KUC_GRP_HSM) {
2337 CERROR("Bad copytool group %d\n", lk->lk_group);
2341 CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd,
2342 lk->lk_uid, lk->lk_group, lk->lk_flags);
2344 if (lk->lk_flags & LK_FLG_STOP) {
2345 /* Unregister with the coordinator */
2346 rc = mdc_ioc_hsm_ct_unregister(imp);
2348 __u32 *archives = NULL;
2350 if ((lk->lk_flags & LK_FLG_DATANR) && lk->lk_data_count > 0)
2351 archives = lk->lk_data;
2353 rc = mdc_ioc_hsm_ct_register(imp, lk->lk_data_count, archives);
2360 * Send a message to any listening copytools
2361 * @param val KUC message (kuc_hdr + hsm_action_list)
2362 * @param len total length of message
2364 static int mdc_hsm_copytool_send(const struct obd_uuid *uuid,
2365 size_t len, void *val)
2367 struct kuc_hdr *lh = (struct kuc_hdr *)val;
2368 struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1);
2372 if (len < sizeof(*lh) + sizeof(*hal)) {
2373 CERROR("Short HSM message %zu < %zu\n", len,
2374 sizeof(*lh) + sizeof(*hal));
2377 if (lh->kuc_magic == __swab16(KUC_MAGIC)) {
2378 lustre_swab_kuch(lh);
2379 lustre_swab_hal(hal);
2380 } else if (lh->kuc_magic != KUC_MAGIC) {
2381 CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC);
2385 CDEBUG(D_HSM, " Received message mg=%x t=%d m=%d l=%d actions=%d "
2387 lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype,
2388 lh->kuc_msglen, hal->hal_count, hal->hal_fsname);
2390 /* Broadcast to HSM listeners */
2391 rc = libcfs_kkuc_group_put(uuid, KUC_GRP_HSM, lh);
2397 * callback function passed to kuc for re-registering each HSM copytool
2398 * running on MDC, after MDT shutdown/recovery.
2399 * @param data copytool registration data
2400 * @param cb_arg callback argument (obd_import)
2402 static int mdc_hsm_ct_reregister(void *data, void *cb_arg)
2404 struct obd_import *imp = (struct obd_import *)cb_arg;
2405 struct kkuc_ct_data *kcd = data;
2406 __u32 *archives = NULL;
2410 (kcd->kcd_magic != KKUC_CT_DATA_ARRAY_MAGIC &&
2411 kcd->kcd_magic != KKUC_CT_DATA_BITMAP_MAGIC))
2414 if (kcd->kcd_magic == KKUC_CT_DATA_BITMAP_MAGIC) {
2415 CDEBUG(D_HA, "%s: recover copytool registration to MDT "
2416 "(archive=%#x)\n", imp->imp_obd->obd_name,
2417 kcd->kcd_nr_archives);
2419 CDEBUG(D_HA, "%s: recover copytool registration to MDT "
2420 "(archive nr = %u)\n",
2421 imp->imp_obd->obd_name, kcd->kcd_nr_archives);
2422 if (kcd->kcd_nr_archives != 0)
2423 archives = kcd->kcd_archives;
2426 rc = mdc_ioc_hsm_ct_register(imp, kcd->kcd_nr_archives, archives);
2427 /* ignore error if the copytool is already registered */
2428 return (rc == -EEXIST) ? 0 : rc;
2432 * Re-establish all kuc contexts with MDT
2433 * after MDT shutdown/recovery.
2435 static int mdc_kuc_reregister(struct obd_import *imp)
2437 /* re-register HSM agents */
2438 return libcfs_kkuc_group_foreach(&imp->imp_obd->obd_uuid, KUC_GRP_HSM,
2439 mdc_hsm_ct_reregister, imp);
2442 static int mdc_set_info_async(const struct lu_env *env,
2443 struct obd_export *exp,
2444 u32 keylen, void *key,
2445 u32 vallen, void *val,
2446 struct ptlrpc_request_set *set)
2448 struct obd_import *imp = class_exp2cliimp(exp);
2452 if (KEY_IS(KEY_READ_ONLY)) {
2453 if (vallen != sizeof(int))
2456 spin_lock(&imp->imp_lock);
2457 if (*((int *)val)) {
2458 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
2459 imp->imp_connect_data.ocd_connect_flags |=
2462 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
2463 imp->imp_connect_data.ocd_connect_flags &=
2464 ~OBD_CONNECT_RDONLY;
2466 spin_unlock(&imp->imp_lock);
2468 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2469 keylen, key, vallen, val, set);
2472 if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2473 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2474 keylen, key, vallen, val, set);
2477 if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) {
2478 rc = mdc_hsm_copytool_send(&imp->imp_obd->obd_uuid, vallen,
2483 if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2484 __u32 *default_easize = val;
2486 exp->exp_obd->u.cli.cl_default_mds_easize = *default_easize;
2490 rc = osc_set_info_async(env, exp, keylen, key, vallen, val, set);
2494 static int mdc_get_info(const struct lu_env *env, struct obd_export *exp,
2495 __u32 keylen, void *key, __u32 *vallen, void *val)
2499 if (KEY_IS(KEY_MAX_EASIZE)) {
2500 __u32 mdsize, *max_easize;
2502 if (*vallen != sizeof(int))
2504 mdsize = *(__u32 *)val;
2505 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
2506 exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
2508 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
2510 } else if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2511 __u32 *default_easize;
2513 if (*vallen != sizeof(int))
2515 default_easize = val;
2516 *default_easize = exp->exp_obd->u.cli.cl_default_mds_easize;
2518 } else if (KEY_IS(KEY_CONN_DATA)) {
2519 struct obd_import *imp = class_exp2cliimp(exp);
2520 struct obd_connect_data *data = val;
2522 if (*vallen != sizeof(*data))
2525 *data = imp->imp_connect_data;
2527 } else if (KEY_IS(KEY_TGT_COUNT)) {
2528 *((__u32 *)val) = 1;
2532 rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
2537 static int mdc_fsync(struct obd_export *exp, const struct lu_fid *fid,
2538 struct ptlrpc_request **request)
2540 struct ptlrpc_request *req;
2545 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
2549 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
2551 ptlrpc_request_free(req);
2555 mdc_pack_body(req, fid, 0, 0, -1, 0);
2557 ptlrpc_request_set_replen(req);
2559 rc = ptlrpc_queue_wait(req);
2561 ptlrpc_req_finished(req);
2567 struct mdc_rmfid_args {
2572 int mdc_rmfid_interpret(const struct lu_env *env, struct ptlrpc_request *req,
2575 struct mdc_rmfid_args *aa;
2580 aa = ptlrpc_req_async_args(aa, req);
2582 size = req_capsule_get_size(&req->rq_pill, &RMF_RCS,
2584 LASSERT(size == sizeof(int) * aa->mra_nr);
2585 rcs = req_capsule_server_get(&req->rq_pill, &RMF_RCS);
2587 LASSERT(aa->mra_rcs);
2588 LASSERT(aa->mra_nr);
2589 memcpy(aa->mra_rcs, rcs, size);
2595 static int mdc_rmfid(struct obd_export *exp, struct fid_array *fa,
2596 int *rcs, struct ptlrpc_request_set *set)
2598 struct ptlrpc_request *req;
2599 struct mdc_rmfid_args *aa;
2605 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_RMFID);
2609 flen = fa->fa_nr * sizeof(struct lu_fid);
2610 req_capsule_set_size(&req->rq_pill, &RMF_FID_ARRAY,
2612 req_capsule_set_size(&req->rq_pill, &RMF_FID_ARRAY,
2614 req_capsule_set_size(&req->rq_pill, &RMF_RCS,
2615 RCL_SERVER, fa->fa_nr * sizeof(__u32));
2616 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_RMFID);
2618 ptlrpc_request_free(req);
2621 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FID_ARRAY);
2622 memcpy(tmp, fa->fa_fids, flen);
2624 mdc_pack_body(req, NULL, 0, 0, -1, 0);
2625 b = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
2626 b->mbo_ctime = ktime_get_real_seconds();
2628 ptlrpc_request_set_replen(req);
2631 aa = ptlrpc_req_async_args(aa, req);
2633 aa->mra_nr = fa->fa_nr;
2634 req->rq_interpret_reply = mdc_rmfid_interpret;
2636 ptlrpc_set_add_req(set, req);
2637 ptlrpc_check_set(NULL, set);
2642 static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
2643 enum obd_import_event event)
2645 struct client_obd *cli = &obd->u.cli;
2648 LASSERT(imp->imp_obd == obd);
2651 case IMP_EVENT_DISCON:
2652 spin_lock(&cli->cl_loi_list_lock);
2653 cli->cl_avail_grant = 0;
2654 cli->cl_lost_grant = 0;
2655 spin_unlock(&cli->cl_loi_list_lock);
2657 case IMP_EVENT_INACTIVE:
2659 * Flush current sequence to make client obtain new one
2660 * from server in case of disconnect/reconnect.
2662 down_read(&cli->cl_seq_rwsem);
2664 seq_client_flush(cli->cl_seq);
2665 up_read(&cli->cl_seq_rwsem);
2667 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE);
2669 case IMP_EVENT_INVALIDATE: {
2670 struct ldlm_namespace *ns = obd->obd_namespace;
2674 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2676 env = cl_env_get(&refcheck);
2678 /* Reset grants. All pages go to failing rpcs due to
2679 * the invalid import.
2681 osc_io_unplug(env, cli, NULL);
2683 cfs_hash_for_each_nolock(ns->ns_rs_hash,
2684 osc_ldlm_resource_invalidate,
2686 cl_env_put(env, &refcheck);
2687 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2693 case IMP_EVENT_ACTIVE:
2694 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE);
2695 /* redo the kuc registration after reconnecting */
2697 rc = mdc_kuc_reregister(imp);
2699 case IMP_EVENT_OCD: {
2700 struct obd_connect_data *ocd = &imp->imp_connect_data;
2702 if (OCD_HAS_FLAG(ocd, GRANT))
2703 osc_init_grant(cli, ocd);
2705 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD);
2708 case IMP_EVENT_DEACTIVATE:
2709 case IMP_EVENT_ACTIVATE:
2712 CERROR("Unknown import event %x\n", event);
2718 int mdc_fid_alloc(const struct lu_env *env, struct obd_export *exp,
2719 struct lu_fid *fid, struct md_op_data *op_data)
2721 struct client_obd *cli = &exp->exp_obd->u.cli;
2726 down_read(&cli->cl_seq_rwsem);
2728 rc = seq_client_alloc_fid(env, cli->cl_seq, fid);
2729 up_read(&cli->cl_seq_rwsem);
2734 static struct obd_uuid *mdc_get_uuid(struct obd_export *exp)
2736 struct client_obd *cli = &exp->exp_obd->u.cli;
2737 return &cli->cl_target_uuid;
2741 * Determine whether the lock can be canceled before replaying it during
2742 * recovery, non zero value will be return if the lock can be canceled,
2743 * or zero returned for not
2745 static int mdc_cancel_weight(struct ldlm_lock *lock)
2747 if (lock->l_resource->lr_type != LDLM_IBITS)
2750 /* FIXME: if we ever get into a situation where there are too many
2751 * opened files with open locks on a single node, then we really
2752 * should replay these open locks to reget it */
2753 if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN)
2756 /* Special case for DoM locks, cancel only unused and granted locks */
2757 if (ldlm_has_dom(lock) &&
2758 (lock->l_granted_mode != lock->l_req_mode ||
2759 osc_ldlm_weigh_ast(lock) != 0))
2765 static int mdc_resource_inode_free(struct ldlm_resource *res)
2767 if (res->lr_lvb_inode)
2768 res->lr_lvb_inode = NULL;
2773 static struct ldlm_valblock_ops inode_lvbo = {
2774 .lvbo_free = mdc_resource_inode_free
2777 static int mdc_llog_init(struct obd_device *obd)
2779 struct obd_llog_group *olg = &obd->obd_olg;
2780 struct llog_ctxt *ctxt;
2785 rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, obd,
2790 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
2791 llog_initiator_connect(ctxt);
2792 llog_ctxt_put(ctxt);
2797 static void mdc_llog_finish(struct obd_device *obd)
2799 struct llog_ctxt *ctxt;
2803 ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
2805 llog_cleanup(NULL, ctxt);
2810 int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
2816 rc = osc_setup_common(obd, cfg);
2820 rc = mdc_tunables_init(obd);
2822 GOTO(err_osc_cleanup, rc);
2824 obd->u.cli.cl_dom_min_inline_repsize = MDC_DOM_DEF_INLINE_REPSIZE;
2826 ns_register_cancel(obd->obd_namespace, mdc_cancel_weight);
2828 obd->obd_namespace->ns_lvbo = &inode_lvbo;
2830 rc = mdc_llog_init(obd);
2832 CERROR("%s: failed to setup llogging subsystems: rc = %d\n",
2834 GOTO(err_llog_cleanup, rc);
2837 rc = mdc_changelog_cdev_init(obd);
2839 CERROR("%s: failed to setup changelog char device: rc = %d\n",
2841 GOTO(err_changelog_cleanup, rc);
2846 err_changelog_cleanup:
2847 mdc_llog_finish(obd);
2849 lprocfs_free_md_stats(obd);
2850 ptlrpc_lprocfs_unregister_obd(obd);
2852 osc_cleanup_common(obd);
2856 /* Initialize the default and maximum LOV EA sizes. This allows
2857 * us to make MDS RPCs with large enough reply buffers to hold a default
2858 * sized EA without having to calculate this (via a call into the
2859 * LOV + OSCs) each time we make an RPC. The maximum size is also tracked
2860 * but not used to avoid wastefully vmalloc()'ing large reply buffers when
2861 * a large number of stripes is possible. If a larger reply buffer is
2862 * required it will be reallocated in the ptlrpc layer due to overflow.
2864 static int mdc_init_ea_size(struct obd_export *exp, __u32 easize,
2867 struct obd_device *obd = exp->exp_obd;
2868 struct client_obd *cli = &obd->u.cli;
2871 if (cli->cl_max_mds_easize < easize)
2872 cli->cl_max_mds_easize = easize;
2874 if (cli->cl_default_mds_easize < def_easize)
2875 cli->cl_default_mds_easize = def_easize;
2880 static int mdc_precleanup(struct obd_device *obd)
2884 osc_precleanup_common(obd);
2885 mdc_changelog_cdev_finish(obd);
2887 obd_cleanup_client_import(obd);
2888 ptlrpc_lprocfs_unregister_obd(obd);
2889 lprocfs_free_md_stats(obd);
2890 mdc_llog_finish(obd);
2894 static int mdc_cleanup(struct obd_device *obd)
2896 return osc_cleanup_common(obd);
2899 static struct obd_ops mdc_obd_ops = {
2900 .o_owner = THIS_MODULE,
2901 .o_setup = mdc_setup,
2902 .o_precleanup = mdc_precleanup,
2903 .o_cleanup = mdc_cleanup,
2904 .o_add_conn = client_import_add_conn,
2905 .o_del_conn = client_import_del_conn,
2906 .o_connect = client_connect_import,
2907 .o_reconnect = osc_reconnect,
2908 .o_disconnect = osc_disconnect,
2909 .o_iocontrol = mdc_iocontrol,
2910 .o_set_info_async = mdc_set_info_async,
2911 .o_statfs = mdc_statfs,
2912 .o_statfs_async = mdc_statfs_async,
2913 .o_fid_init = client_fid_init,
2914 .o_fid_fini = client_fid_fini,
2915 .o_fid_alloc = mdc_fid_alloc,
2916 .o_import_event = mdc_import_event,
2917 .o_get_info = mdc_get_info,
2918 .o_get_uuid = mdc_get_uuid,
2919 .o_quotactl = mdc_quotactl,
2922 static struct md_ops mdc_md_ops = {
2923 .m_get_root = mdc_get_root,
2924 .m_null_inode = mdc_null_inode,
2925 .m_close = mdc_close,
2926 .m_create = mdc_create,
2927 .m_enqueue = mdc_enqueue,
2928 .m_getattr = mdc_getattr,
2929 .m_getattr_name = mdc_getattr_name,
2930 .m_intent_lock = mdc_intent_lock,
2932 .m_rename = mdc_rename,
2933 .m_setattr = mdc_setattr,
2934 .m_setxattr = mdc_setxattr,
2935 .m_getxattr = mdc_getxattr,
2936 .m_fsync = mdc_fsync,
2937 .m_file_resync = mdc_file_resync,
2938 .m_read_page = mdc_read_page,
2939 .m_unlink = mdc_unlink,
2940 .m_cancel_unused = mdc_cancel_unused,
2941 .m_init_ea_size = mdc_init_ea_size,
2942 .m_set_lock_data = mdc_set_lock_data,
2943 .m_lock_match = mdc_lock_match,
2944 .m_get_lustre_md = mdc_get_lustre_md,
2945 .m_free_lustre_md = mdc_free_lustre_md,
2946 .m_set_open_replay_data = mdc_set_open_replay_data,
2947 .m_clear_open_replay_data = mdc_clear_open_replay_data,
2948 .m_intent_getattr_async = mdc_intent_getattr_async,
2949 .m_revalidate_lock = mdc_revalidate_lock,
2950 .m_rmfid = mdc_rmfid,
2953 static int __init mdc_init(void)
2955 return class_register_type(&mdc_obd_ops, &mdc_md_ops, true, NULL,
2956 LUSTRE_MDC_NAME, &mdc_device_type);
2959 static void __exit mdc_exit(void)
2961 class_unregister_type(LUSTRE_MDC_NAME);
2964 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
2965 MODULE_DESCRIPTION("Lustre Metadata Client");
2966 MODULE_VERSION(LUSTRE_VERSION_STRING);
2967 MODULE_LICENSE("GPL");
2969 module_init(mdc_init);
2970 module_exit(mdc_exit);