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_t(__u32,
242 imp->imp_connect_data.ocd_max_easize,
244 mdc_reset_acl_req(req);
248 ptlrpc_req_finished(req);
256 static int mdc_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
257 struct ptlrpc_request **request)
259 struct ptlrpc_request *req;
260 struct obd_import *imp = class_exp2cliimp(exp);
261 __u32 acl_bufsize = LUSTRE_POSIX_ACL_MAX_SIZE_OLD;
266 req = ptlrpc_request_alloc(imp, &RQF_MDS_GETATTR_NAME);
270 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
271 op_data->op_namelen + 1);
273 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME);
275 ptlrpc_request_free(req);
279 if (op_data->op_name) {
280 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
281 LASSERT(strnlen(op_data->op_name, op_data->op_namelen) ==
282 op_data->op_namelen);
283 memcpy(name, op_data->op_name, op_data->op_namelen);
287 mdc_pack_body(req, &op_data->op_fid1, op_data->op_valid,
288 op_data->op_mode, op_data->op_suppgids[0], 0);
289 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
291 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER, acl_bufsize);
292 ptlrpc_request_set_replen(req);
294 rc = mdc_getattr_common(exp, req);
297 acl_bufsize = min_t(__u32,
298 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) {
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 BUILD_BUG_ON(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 ptlrpc_get_mod_rpc_slot(req);
418 rc = ptlrpc_queue_wait(req);
420 if (opcode == MDS_REINT)
421 ptlrpc_put_mod_rpc_slot(req);
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
545 #ifdef HAVE_XA_IS_VALUE
546 # include <linux/xarray.h>
549 int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
550 struct obd_export *dt_exp, struct obd_export *md_exp,
551 struct lustre_md *md)
553 struct req_capsule *pill = &req->rq_pill;
558 memset(md, 0, sizeof(*md));
560 md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
561 LASSERT(md->body != NULL);
563 if (md->body->mbo_valid & OBD_MD_FLEASIZE) {
564 if (!S_ISREG(md->body->mbo_mode)) {
565 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
566 "regular file, but is not\n");
567 GOTO(out, rc = -EPROTO);
570 if (md->body->mbo_eadatasize == 0) {
571 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
572 "but eadatasize 0\n");
573 GOTO(out, rc = -EPROTO);
576 md->layout.lb_len = md->body->mbo_eadatasize;
577 md->layout.lb_buf = req_capsule_server_sized_get(pill,
580 if (md->layout.lb_buf == NULL)
581 GOTO(out, rc = -EPROTO);
582 } else if (md->body->mbo_valid & OBD_MD_FLDIREA) {
583 const union lmv_mds_md *lmv;
586 if (!S_ISDIR(md->body->mbo_mode)) {
587 CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
588 "directory, but is not\n");
589 GOTO(out, rc = -EPROTO);
592 if (md->body->mbo_valid & OBD_MD_MEA) {
593 lmv_size = md->body->mbo_eadatasize;
595 CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
596 "but eadatasize 0\n");
600 lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
603 GOTO(out, rc = -EPROTO);
605 rc = md_unpackmd(md_exp, &md->lmv, lmv, lmv_size);
609 if (rc < (int)sizeof(*md->lmv)) {
610 struct lmv_foreign_md *lfm = md->lfm;
612 /* short (< sizeof(struct lmv_stripe_md))
615 if (lfm->lfm_magic != LMV_MAGIC_FOREIGN) {
617 "lmv size too small: %d < %d\n",
618 rc, (int)sizeof(*md->lmv));
619 GOTO(out, rc = -EPROTO);
624 /* since 2.12.58 intent_getattr fetches default LMV */
625 if (md->body->mbo_valid & OBD_MD_DEFAULT_MEA) {
626 lmv_size = sizeof(struct lmv_user_md);
627 lmv = req_capsule_server_sized_get(pill,
631 GOTO(out, rc = -EPROTO);
633 rc = md_unpackmd(md_exp, &md->default_lmv, lmv,
638 if (rc < (int)sizeof(*md->default_lmv)) {
640 "default lmv size too small: %d < %d\n",
641 rc, (int)sizeof(*md->default_lmv));
642 GOTO(out, rc = -EPROTO);
648 if (md->body->mbo_valid & OBD_MD_FLACL) {
649 /* for ACL, it's possible that FLACL is set but aclsize is zero.
650 * only when aclsize != 0 there's an actual segment for ACL
653 if (md->body->mbo_aclsize) {
654 rc = mdc_unpack_acl(req, md);
657 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
659 md->posix_acl = NULL;
667 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
668 posix_acl_release(md->posix_acl);
674 int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
680 void mdc_replay_open(struct ptlrpc_request *req)
682 struct md_open_data *mod = req->rq_cb_data;
683 struct ptlrpc_request *close_req;
684 struct obd_client_handle *och;
685 struct lustre_handle old_open_handle = { };
686 struct mdt_body *body;
690 DEBUG_REQ(D_ERROR, req,
691 "cannot properly replay without open data");
696 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
697 LASSERT(body != NULL);
699 spin_lock(&req->rq_lock);
701 if (och && och->och_open_handle.cookie)
702 req->rq_early_free_repbuf = 1;
704 req->rq_early_free_repbuf = 0;
705 spin_unlock(&req->rq_lock);
707 if (req->rq_early_free_repbuf) {
708 struct lustre_handle *file_open_handle;
710 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
712 file_open_handle = &och->och_open_handle;
713 CDEBUG(D_HA, "updating handle from %#llx to %#llx\n",
714 file_open_handle->cookie, body->mbo_open_handle.cookie);
715 old_open_handle = *file_open_handle;
716 *file_open_handle = body->mbo_open_handle;
719 close_req = mod->mod_close_req;
721 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
722 struct mdt_ioepoch *epoch;
724 LASSERT(opc == MDS_CLOSE);
725 epoch = req_capsule_client_get(&close_req->rq_pill,
729 if (req->rq_early_free_repbuf)
730 LASSERT(old_open_handle.cookie ==
731 epoch->mio_open_handle.cookie);
733 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
734 epoch->mio_open_handle = body->mbo_open_handle;
739 void mdc_commit_open(struct ptlrpc_request *req)
741 struct md_open_data *mod = req->rq_cb_data;
746 * No need to touch md_open_data::mod_och, it holds a reference on
747 * \var mod and will zero references to each other, \var mod will be
748 * freed after that when md_open_data::mod_och will put the reference.
752 * Do not let open request to disappear as it still may be needed
753 * for close rpc to happen (it may happen on evict only, otherwise
754 * ptlrpc_request::rq_replay does not let mdc_commit_open() to be
755 * called), just mark this rpc as committed to distinguish these 2
756 * cases, see mdc_close() for details. The open request reference will
757 * be put along with freeing \var mod.
759 ptlrpc_request_addref(req);
760 spin_lock(&req->rq_lock);
761 req->rq_committed = 1;
762 spin_unlock(&req->rq_lock);
763 req->rq_cb_data = NULL;
767 int mdc_set_open_replay_data(struct obd_export *exp,
768 struct obd_client_handle *och,
769 struct lookup_intent *it)
771 struct md_open_data *mod;
772 struct mdt_rec_create *rec;
773 struct mdt_body *body;
774 struct ptlrpc_request *open_req = it->it_request;
775 struct obd_import *imp = open_req->rq_import;
778 if (!open_req->rq_replay)
781 rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
782 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
783 LASSERT(rec != NULL);
784 /* Incoming message in my byte order (it's been swabbed). */
785 /* Outgoing messages always in my byte order. */
786 LASSERT(body != NULL);
788 /* Only if the import is replayable, we set replay_open data */
789 if (och && imp->imp_replayable) {
790 mod = obd_mod_alloc();
792 DEBUG_REQ(D_ERROR, open_req,
793 "cannot allocate md_open_data");
798 * Take a reference on \var mod, to be freed on mdc_close().
799 * It protects \var mod from being freed on eviction (commit
800 * callback is called despite rq_replay flag).
801 * Another reference for \var och.
806 spin_lock(&open_req->rq_lock);
809 mod->mod_is_create = it_disposition(it, DISP_OPEN_CREATE) ||
810 it_disposition(it, DISP_OPEN_STRIPE);
811 mod->mod_open_req = open_req;
812 open_req->rq_cb_data = mod;
813 open_req->rq_commit_cb = mdc_commit_open;
814 open_req->rq_early_free_repbuf = 1;
815 spin_unlock(&open_req->rq_lock);
818 rec->cr_fid2 = body->mbo_fid1;
819 rec->cr_open_handle_old = body->mbo_open_handle;
820 open_req->rq_replay_cb = mdc_replay_open;
821 if (!fid_is_sane(&body->mbo_fid1)) {
822 DEBUG_REQ(D_ERROR, open_req,
823 "saving replay request with insane FID " DFID,
824 PFID(&body->mbo_fid1));
828 DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
832 static void mdc_free_open(struct md_open_data *mod)
836 if (mod->mod_is_create == 0 &&
837 imp_connect_disp_stripe(mod->mod_open_req->rq_import))
841 * No reason to asssert here if the open request has
842 * rq_replay == 1. It means that mdc_close failed, and
843 * close request wasn`t sent. It is not fatal to client.
844 * The worst thing is eviction if the client gets open lock
847 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req,
848 "free open request, rq_replay=%d",
849 mod->mod_open_req->rq_replay);
851 ptlrpc_request_committed(mod->mod_open_req, committed);
852 if (mod->mod_close_req)
853 ptlrpc_request_committed(mod->mod_close_req, committed);
856 int mdc_clear_open_replay_data(struct obd_export *exp,
857 struct obd_client_handle *och)
859 struct md_open_data *mod = och->och_mod;
863 * It is possible to not have \var mod in a case of eviction between
864 * lookup and ll_file_open().
869 LASSERT(mod != LP_POISON);
870 LASSERT(mod->mod_open_req != NULL);
872 spin_lock(&mod->mod_open_req->rq_lock);
874 mod->mod_och->och_open_handle.cookie = 0;
875 mod->mod_open_req->rq_early_free_repbuf = 0;
876 spin_unlock(&mod->mod_open_req->rq_lock);
886 static int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
887 struct md_open_data *mod, struct ptlrpc_request **request)
889 struct obd_device *obd = class_exp2obd(exp);
890 struct ptlrpc_request *req;
891 struct req_format *req_fmt;
892 size_t u32_count = 0;
897 CDEBUG(D_INODE, "%s: "DFID" file closed with intent: %x\n",
898 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
901 if (op_data->op_bias & MDS_CLOSE_INTENT) {
902 req_fmt = &RQF_MDS_CLOSE_INTENT;
903 if (op_data->op_bias & MDS_HSM_RELEASE) {
904 /* allocate a FID for volatile file */
905 rc = mdc_fid_alloc(NULL, exp, &op_data->op_fid2,
908 CERROR("%s: "DFID" allocating FID: rc = %d\n",
909 obd->obd_name, PFID(&op_data->op_fid1),
911 /* save the errcode and proceed to close */
915 if (op_data->op_bias & MDS_CLOSE_RESYNC_DONE) {
916 size_t count = op_data->op_data_size / sizeof(__u32);
918 if (count > INLINE_RESYNC_ARRAY_SIZE)
922 req_fmt = &RQF_MDS_CLOSE;
926 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_CLOSE))
929 req = ptlrpc_request_alloc(class_exp2cliimp(exp), req_fmt);
931 /* Ensure that this close's handle is fixed up during replay. */
932 if (likely(mod != NULL)) {
933 LASSERTF(mod->mod_open_req != NULL &&
934 mod->mod_open_req->rq_type != LI_POISON,
935 "POISONED open %p!\n", mod->mod_open_req);
937 mod->mod_close_req = req;
939 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req, "matched open");
940 /* We no longer want to preserve this open for replay even
941 * though the open was committed. b=3632, b=3633 */
942 spin_lock(&mod->mod_open_req->rq_lock);
943 mod->mod_open_req->rq_replay = 0;
944 spin_unlock(&mod->mod_open_req->rq_lock);
946 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
950 * TODO: repeat close after errors
952 CWARN("%s: close of FID "DFID" failed, file reference will be "
953 "dropped when this client unmounts or is evicted\n",
954 obd->obd_name, PFID(&op_data->op_fid1));
955 GOTO(out, rc = -ENOMEM);
959 req_capsule_set_size(&req->rq_pill, &RMF_U32, RCL_CLIENT,
960 u32_count * sizeof(__u32));
962 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
964 ptlrpc_request_free(req);
969 /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
970 * portal whose threads are not taking any DLM locks and are therefore
971 * always progressing */
972 req->rq_request_portal = MDS_READPAGE_PORTAL;
973 ptlrpc_at_set_req_timeout(req);
975 if (!(exp_connect_flags2(exp) & OBD_CONNECT2_LSOM))
976 op_data->op_xvalid &= ~(OP_XVALID_LAZYSIZE |
977 OP_XVALID_LAZYBLOCKS);
979 mdc_close_pack(req, op_data);
981 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
982 obd->u.cli.cl_default_mds_easize);
984 ptlrpc_request_set_replen(req);
986 ptlrpc_get_mod_rpc_slot(req);
987 rc = ptlrpc_queue_wait(req);
988 ptlrpc_put_mod_rpc_slot(req);
990 if (req->rq_repmsg == NULL) {
991 CDEBUG(D_RPCTRACE, "request %p failed to send: rc = %d\n", req,
994 rc = req->rq_status ?: -EIO;
995 } else if (rc == 0 || rc == -EAGAIN) {
996 struct mdt_body *body;
998 rc = lustre_msg_get_status(req->rq_repmsg);
999 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
1000 DEBUG_REQ(D_ERROR, req,
1001 "type = PTL_RPC_MSG_ERR: rc = %d", rc);
1005 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1008 } else if (rc == -ESTALE) {
1010 * it can be allowed error after 3633 if open was committed and
1011 * server failed before close was sent. Let's check if mod
1012 * exists and return no error in that case
1015 DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc);
1016 LASSERT(mod->mod_open_req != NULL);
1017 if (mod->mod_open_req->rq_committed)
1025 mod->mod_close_req = NULL;
1026 /* Since now, mod is accessed through open_req only,
1027 * thus close req does not keep a reference on mod anymore. */
1032 RETURN(rc < 0 ? rc : saved_rc);
1035 static int mdc_getpage(struct obd_export *exp, const struct lu_fid *fid,
1036 u64 offset, struct page **pages, int npages,
1037 struct ptlrpc_request **request)
1039 struct ptlrpc_request *req;
1040 struct ptlrpc_bulk_desc *desc;
1049 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
1053 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
1055 ptlrpc_request_free(req);
1059 req->rq_request_portal = MDS_READPAGE_PORTAL;
1060 ptlrpc_at_set_req_timeout(req);
1062 desc = ptlrpc_prep_bulk_imp(req, npages, 1,
1063 PTLRPC_BULK_PUT_SINK | PTLRPC_BULK_BUF_KIOV,
1065 &ptlrpc_bulk_kiov_pin_ops);
1067 ptlrpc_req_finished(req);
1071 /* NB req now owns desc and will free it when it gets freed */
1072 for (i = 0; i < npages; i++)
1073 desc->bd_frag_ops->add_kiov_frag(desc, pages[i], 0,
1076 mdc_readdir_pack(req, offset, PAGE_SIZE * npages, fid);
1078 ptlrpc_request_set_replen(req);
1079 rc = ptlrpc_queue_wait(req);
1081 ptlrpc_req_finished(req);
1082 if (rc != -ETIMEDOUT)
1086 if (!client_should_resend(resends, &exp->exp_obd->u.cli)) {
1087 CERROR("%s: too many resend retries: rc = %d\n",
1088 exp->exp_obd->obd_name, -EIO);
1096 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
1097 req->rq_bulk->bd_nob_transferred);
1099 ptlrpc_req_finished(req);
1103 if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) {
1104 CERROR("%s: unexpected bytes transferred: %d (%ld expected)\n",
1105 exp->exp_obd->obd_name, req->rq_bulk->bd_nob_transferred,
1106 PAGE_SIZE * npages);
1107 ptlrpc_req_finished(req);
1115 static void mdc_release_page(struct page *page, int remove)
1119 if (likely(page->mapping != NULL))
1120 delete_from_page_cache(page);
1126 static struct page *mdc_page_locate(struct address_space *mapping, __u64 *hash,
1127 __u64 *start, __u64 *end, int hash64)
1130 * Complement of hash is used as an index so that
1131 * radix_tree_gang_lookup() can be used to find a page with starting
1132 * hash _smaller_ than one we are looking for.
1134 unsigned long offset = hash_x_index(*hash, hash64);
1136 unsigned long flags;
1139 xa_lock_irqsave(&mapping->i_pages, flags);
1140 found = radix_tree_gang_lookup(&mapping->page_tree,
1141 (void **)&page, offset, 1);
1142 if (found > 0 && !xa_is_value(page)) {
1143 struct lu_dirpage *dp;
1146 xa_unlock_irqrestore(&mapping->i_pages, flags);
1148 * In contrast to find_lock_page() we are sure that directory
1149 * page cannot be truncated (while DLM lock is held) and,
1150 * hence, can avoid restart.
1152 * In fact, page cannot be locked here at all, because
1153 * mdc_read_page_remote does synchronous io.
1155 wait_on_page_locked(page);
1156 if (PageUptodate(page)) {
1158 if (BITS_PER_LONG == 32 && hash64) {
1159 *start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1160 *end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1161 *hash = *hash >> 32;
1163 *start = le64_to_cpu(dp->ldp_hash_start);
1164 *end = le64_to_cpu(dp->ldp_hash_end);
1166 if (unlikely(*start == 1 && *hash == 0))
1169 LASSERTF(*start <= *hash, "start = %#llx"
1170 ",end = %#llx,hash = %#llx\n",
1171 *start, *end, *hash);
1172 CDEBUG(D_VFSTRACE, "offset %lx [%#llx %#llx],"
1173 " hash %#llx\n", offset, *start, *end, *hash);
1176 mdc_release_page(page, 0);
1178 } else if (*end != *start && *hash == *end) {
1180 * upon hash collision, remove this page,
1181 * otherwise put page reference, and
1182 * mdc_read_page_remote() will issue RPC to
1183 * fetch the page we want.
1186 mdc_release_page(page,
1187 le32_to_cpu(dp->ldp_flags) & LDF_COLLIDE);
1192 page = ERR_PTR(-EIO);
1195 xa_unlock_irqrestore(&mapping->i_pages, flags);
1202 * Adjust a set of pages, each page containing an array of lu_dirpages,
1203 * so that each page can be used as a single logical lu_dirpage.
1205 * A lu_dirpage is laid out as follows, where s = ldp_hash_start,
1206 * e = ldp_hash_end, f = ldp_flags, p = padding, and each "ent" is a
1207 * struct lu_dirent. It has size up to LU_PAGE_SIZE. The ldp_hash_end
1208 * value is used as a cookie to request the next lu_dirpage in a
1209 * directory listing that spans multiple pages (two in this example):
1212 * .|--------v------- -----.
1213 * |s|e|f|p|ent|ent| ... |ent|
1214 * '--|-------------- -----' Each PAGE contains a single
1215 * '------. lu_dirpage.
1216 * .---------v------- -----.
1217 * |s|e|f|p|ent| 0 | ... | 0 |
1218 * '----------------- -----'
1220 * However, on hosts where the native VM page size (PAGE_SIZE) is
1221 * larger than LU_PAGE_SIZE, a single host page may contain multiple
1222 * lu_dirpages. After reading the lu_dirpages from the MDS, the
1223 * ldp_hash_end of the first lu_dirpage refers to the one immediately
1224 * after it in the same PAGE (arrows simplified for brevity, but
1225 * in general e0==s1, e1==s2, etc.):
1227 * .-------------------- -----.
1228 * |s0|e0|f0|p|ent|ent| ... |ent|
1229 * |---v---------------- -----|
1230 * |s1|e1|f1|p|ent|ent| ... |ent|
1231 * |---v---------------- -----| Here, each PAGE contains
1232 * ... multiple lu_dirpages.
1233 * |---v---------------- -----|
1234 * |s'|e'|f'|p|ent|ent| ... |ent|
1235 * '---|---------------- -----'
1237 * .----------------------------.
1240 * This structure is transformed into a single logical lu_dirpage as follows:
1242 * - Replace e0 with e' so the request for the next lu_dirpage gets the page
1243 * labeled 'next PAGE'.
1245 * - Copy the LDF_COLLIDE flag from f' to f0 to correctly reflect whether
1246 * a hash collision with the next page exists.
1248 * - Adjust the lde_reclen of the ending entry of each lu_dirpage to span
1249 * to the first entry of the next lu_dirpage.
1251 #if PAGE_SIZE > LU_PAGE_SIZE
1252 static void mdc_adjust_dirpages(struct page **pages, int cfs_pgs, int lu_pgs)
1256 for (i = 0; i < cfs_pgs; i++) {
1257 struct lu_dirpage *dp = kmap(pages[i]);
1258 struct lu_dirpage *first = dp;
1259 struct lu_dirent *end_dirent = NULL;
1260 struct lu_dirent *ent;
1261 __u64 hash_end = dp->ldp_hash_end;
1262 __u32 flags = dp->ldp_flags;
1264 while (--lu_pgs > 0) {
1265 ent = lu_dirent_start(dp);
1266 for (end_dirent = ent; ent != NULL;
1267 end_dirent = ent, ent = lu_dirent_next(ent));
1269 /* Advance dp to next lu_dirpage. */
1270 dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE);
1272 /* Check if we've reached the end of the PAGE. */
1273 if (!((unsigned long)dp & ~PAGE_MASK))
1276 /* Save the hash and flags of this lu_dirpage. */
1277 hash_end = dp->ldp_hash_end;
1278 flags = dp->ldp_flags;
1280 /* Check if lu_dirpage contains no entries. */
1281 if (end_dirent == NULL)
1284 /* Enlarge the end entry lde_reclen from 0 to
1285 * first entry of next lu_dirpage. */
1286 LASSERT(le16_to_cpu(end_dirent->lde_reclen) == 0);
1287 end_dirent->lde_reclen =
1288 cpu_to_le16((char *)(dp->ldp_entries) -
1289 (char *)end_dirent);
1292 first->ldp_hash_end = hash_end;
1293 first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE);
1294 first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE);
1298 LASSERTF(lu_pgs == 0, "left = %d\n", lu_pgs);
1301 #define mdc_adjust_dirpages(pages, cfs_pgs, lu_pgs) do {} while (0)
1302 #endif /* PAGE_SIZE > LU_PAGE_SIZE */
1304 /* parameters for readdir page */
1305 struct readpage_param {
1306 struct md_op_data *rp_mod;
1309 struct obd_export *rp_exp;
1310 struct md_callback *rp_cb;
1314 * Read pages from server.
1316 * Page in MDS_READPAGE RPC is packed in LU_PAGE_SIZE, and each page contains
1317 * a header lu_dirpage which describes the start/end hash, and whether this
1318 * page is empty (contains no dir entry) or hash collide with next page.
1319 * After client receives reply, several pages will be integrated into dir page
1320 * in PAGE_SIZE (if PAGE_SIZE greater than LU_PAGE_SIZE), and the
1321 * lu_dirpage for this integrated page will be adjusted.
1323 static int mdc_read_page_remote(void *data, struct page *page0)
1325 struct readpage_param *rp = data;
1326 struct page **page_pool;
1328 struct lu_dirpage *dp;
1329 struct md_op_data *op_data = rp->rp_mod;
1330 struct ptlrpc_request *req;
1332 struct inode *inode;
1334 int rd_pgs = 0; /* number of pages actually read */
1340 max_pages = rp->rp_exp->exp_obd->u.cli.cl_max_pages_per_rpc;
1341 inode = op_data->op_data;
1342 fid = &op_data->op_fid1;
1343 LASSERT(inode != NULL);
1345 OBD_ALLOC(page_pool, sizeof(page_pool[0]) * max_pages);
1346 if (page_pool != NULL) {
1347 page_pool[0] = page0;
1353 for (npages = 1; npages < max_pages; npages++) {
1354 page = page_cache_alloc(inode->i_mapping);
1357 page_pool[npages] = page;
1360 rc = mdc_getpage(rp->rp_exp, fid, rp->rp_off, page_pool, npages, &req);
1362 /* page0 is special, which was added into page cache early */
1363 delete_from_page_cache(page0);
1367 rd_pgs = (req->rq_bulk->bd_nob_transferred + PAGE_SIZE - 1) >>
1369 lu_pgs = req->rq_bulk->bd_nob_transferred >> LU_PAGE_SHIFT;
1370 LASSERT(!(req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK));
1372 CDEBUG(D_INODE, "read %d(%d) pages\n", rd_pgs, lu_pgs);
1374 mdc_adjust_dirpages(page_pool, rd_pgs, lu_pgs);
1376 SetPageUptodate(page0);
1380 ptlrpc_req_finished(req);
1381 CDEBUG(D_CACHE, "read %d/%d pages\n", rd_pgs, npages);
1382 for (i = 1; i < npages; i++) {
1383 unsigned long offset;
1387 page = page_pool[i];
1389 if (rc < 0 || i >= rd_pgs) {
1394 SetPageUptodate(page);
1397 hash = le64_to_cpu(dp->ldp_hash_start);
1400 offset = hash_x_index(hash, rp->rp_hash64);
1402 prefetchw(&page->flags);
1403 ret = add_to_page_cache_lru(page, inode->i_mapping, offset,
1408 CDEBUG(D_VFSTRACE, "page %lu add to page cache failed:"
1409 " rc = %d\n", offset, ret);
1413 if (page_pool != &page0)
1414 OBD_FREE(page_pool, sizeof(page_pool[0]) * max_pages);
1420 * Read dir page from cache first, if it can not find it, read it from
1421 * server and add into the cache.
1423 * \param[in] exp MDC export
1424 * \param[in] op_data client MD stack parameters, transfering parameters
1425 * between different layers on client MD stack.
1426 * \param[in] cb_op callback required for ldlm lock enqueue during
1428 * \param[in] hash_offset the hash offset of the page to be read
1429 * \param[in] ppage the page to be read
1431 * retval = 0 get the page successfully
1432 * errno(<0) get the page failed
1434 static int mdc_read_page(struct obd_export *exp, struct md_op_data *op_data,
1435 struct md_callback *cb_op, __u64 hash_offset,
1436 struct page **ppage)
1438 struct lookup_intent it = { .it_op = IT_READDIR };
1440 struct inode *dir = op_data->op_data;
1441 struct address_space *mapping;
1442 struct lu_dirpage *dp;
1445 struct lustre_handle lockh;
1446 struct ptlrpc_request *enq_req = NULL;
1447 struct readpage_param rp_param;
1454 LASSERT(dir != NULL);
1455 mapping = dir->i_mapping;
1457 rc = mdc_intent_lock(exp, op_data, &it, &enq_req,
1458 cb_op->md_blocking_ast, 0);
1459 if (enq_req != NULL)
1460 ptlrpc_req_finished(enq_req);
1463 CERROR("%s: "DFID" lock enqueue fails: rc = %d\n",
1464 exp->exp_obd->obd_name, PFID(&op_data->op_fid1), rc);
1469 lockh.cookie = it.it_lock_handle;
1470 mdc_set_lock_data(exp, &lockh, dir, NULL);
1472 rp_param.rp_off = hash_offset;
1473 rp_param.rp_hash64 = op_data->op_cli_flags & CLI_HASH64;
1474 page = mdc_page_locate(mapping, &rp_param.rp_off, &start, &end,
1475 rp_param.rp_hash64);
1477 CERROR("%s: dir page locate: "DFID" at %llu: rc %ld\n",
1478 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1479 rp_param.rp_off, PTR_ERR(page));
1480 GOTO(out_unlock, rc = PTR_ERR(page));
1481 } else if (page != NULL) {
1483 * XXX nikita: not entirely correct handling of a corner case:
1484 * suppose hash chain of entries with hash value HASH crosses
1485 * border between pages P0 and P1. First both P0 and P1 are
1486 * cached, seekdir() is called for some entry from the P0 part
1487 * of the chain. Later P0 goes out of cache. telldir(HASH)
1488 * happens and finds P1, as it starts with matching hash
1489 * value. Remaining entries from P0 part of the chain are
1490 * skipped. (Is that really a bug?)
1492 * Possible solutions: 0. don't cache P1 is such case, handle
1493 * it as an "overflow" page. 1. invalidate all pages at
1494 * once. 2. use HASH|1 as an index for P1.
1496 GOTO(hash_collision, page);
1499 rp_param.rp_exp = exp;
1500 rp_param.rp_mod = op_data;
1501 page = read_cache_page(mapping,
1502 hash_x_index(rp_param.rp_off,
1503 rp_param.rp_hash64),
1504 mdc_read_page_remote, &rp_param);
1506 CDEBUG(D_INFO, "%s: read cache page: "DFID" at %llu: %ld\n",
1507 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1508 rp_param.rp_off, PTR_ERR(page));
1509 GOTO(out_unlock, rc = PTR_ERR(page));
1512 wait_on_page_locked(page);
1514 if (!PageUptodate(page)) {
1515 CERROR("%s: page not updated: "DFID" at %llu: rc %d\n",
1516 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1517 rp_param.rp_off, -5);
1520 if (!PageChecked(page))
1521 SetPageChecked(page);
1522 if (PageError(page)) {
1523 CERROR("%s: page error: "DFID" at %llu: rc %d\n",
1524 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1525 rp_param.rp_off, -5);
1530 dp = page_address(page);
1531 if (BITS_PER_LONG == 32 && rp_param.rp_hash64) {
1532 start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1533 end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1534 rp_param.rp_off = hash_offset >> 32;
1536 start = le64_to_cpu(dp->ldp_hash_start);
1537 end = le64_to_cpu(dp->ldp_hash_end);
1538 rp_param.rp_off = hash_offset;
1541 LASSERT(start == rp_param.rp_off);
1542 CWARN("Page-wide hash collision: %#lx\n", (unsigned long)end);
1543 #if BITS_PER_LONG == 32
1544 CWARN("Real page-wide hash collision at [%llu %llu] with "
1545 "hash %llu\n", le64_to_cpu(dp->ldp_hash_start),
1546 le64_to_cpu(dp->ldp_hash_end), hash_offset);
1550 * Fetch whole overflow chain...
1558 ldlm_lock_decref(&lockh, it.it_lock_mode);
1562 mdc_release_page(page, 1);
1567 static int mdc_statfs_interpret(const struct lu_env *env,
1568 struct ptlrpc_request *req, void *args, int rc)
1570 struct obd_info *oinfo = args;
1571 struct obd_statfs *osfs;
1574 osfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1578 oinfo->oi_osfs = osfs;
1580 CDEBUG(D_CACHE, "blocks=%llu free=%llu avail=%llu "
1581 "objects=%llu free=%llu state=%x\n",
1582 osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
1583 osfs->os_files, osfs->os_ffree, osfs->os_state);
1586 oinfo->oi_cb_up(oinfo, rc);
1591 static int mdc_statfs_async(struct obd_export *exp,
1592 struct obd_info *oinfo, time64_t max_age,
1593 struct ptlrpc_request_set *unused)
1595 struct ptlrpc_request *req;
1596 struct obd_info *aa;
1598 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_STATFS,
1599 LUSTRE_MDS_VERSION, MDS_STATFS);
1603 ptlrpc_request_set_replen(req);
1604 req->rq_interpret_reply = mdc_statfs_interpret;
1606 aa = ptlrpc_req_async_args(aa, req);
1609 ptlrpcd_add_req(req);
1614 static int mdc_statfs(const struct lu_env *env,
1615 struct obd_export *exp, struct obd_statfs *osfs,
1616 time64_t max_age, __u32 flags)
1618 struct obd_device *obd = class_exp2obd(exp);
1619 struct req_format *fmt;
1620 struct ptlrpc_request *req;
1621 struct obd_statfs *msfs;
1622 struct obd_import *imp = NULL;
1627 * Since the request might also come from lprocfs, so we need
1628 * sync this with client_disconnect_export Bug15684
1630 down_read(&obd->u.cli.cl_sem);
1631 if (obd->u.cli.cl_import)
1632 imp = class_import_get(obd->u.cli.cl_import);
1633 up_read(&obd->u.cli.cl_sem);
1637 fmt = &RQF_MDS_STATFS;
1638 if ((exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS) &&
1639 (flags & OBD_STATFS_SUM))
1640 fmt = &RQF_MDS_STATFS_NEW;
1641 req = ptlrpc_request_alloc_pack(imp, fmt, LUSTRE_MDS_VERSION,
1644 GOTO(output, rc = -ENOMEM);
1646 if ((flags & OBD_STATFS_SUM) &&
1647 (exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS)) {
1648 /* request aggregated states */
1649 struct mdt_body *body;
1651 body = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
1653 GOTO(out, rc = -EPROTO);
1654 body->mbo_valid = OBD_MD_FLAGSTATFS;
1657 ptlrpc_request_set_replen(req);
1659 if (flags & OBD_STATFS_NODELAY) {
1660 /* procfs requests not want stay in wait for avoid deadlock */
1661 req->rq_no_resend = 1;
1662 req->rq_no_delay = 1;
1665 rc = ptlrpc_queue_wait(req);
1667 /* check connection error first */
1668 if (imp->imp_connect_error)
1669 rc = imp->imp_connect_error;
1673 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1675 GOTO(out, rc = -EPROTO);
1680 ptlrpc_req_finished(req);
1682 class_import_put(imp);
1686 static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
1688 __u32 keylen, vallen;
1692 if (gf->gf_pathlen > PATH_MAX)
1693 RETURN(-ENAMETOOLONG);
1694 if (gf->gf_pathlen < 2)
1697 /* Key is KEY_FID2PATH + getinfo_fid2path description */
1698 keylen = cfs_size_round(sizeof(KEY_FID2PATH) + sizeof(*gf) +
1699 sizeof(struct lu_fid));
1700 OBD_ALLOC(key, keylen);
1703 memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
1704 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
1705 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf),
1706 gf->gf_u.gf_root_fid, sizeof(struct lu_fid));
1707 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
1708 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
1710 if (!fid_is_sane(&gf->gf_fid))
1711 GOTO(out, rc = -EINVAL);
1713 /* Val is struct getinfo_fid2path result plus path */
1714 vallen = sizeof(*gf) + gf->gf_pathlen;
1716 rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf);
1717 if (rc != 0 && rc != -EREMOTE)
1720 if (vallen <= sizeof(*gf))
1721 GOTO(out, rc = -EPROTO);
1722 if (vallen > sizeof(*gf) + gf->gf_pathlen)
1723 GOTO(out, rc = -EOVERFLOW);
1725 CDEBUG(D_IOCTL, "path got "DFID" from %llu #%d: %s\n",
1726 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno,
1727 gf->gf_pathlen < 512 ? gf->gf_u.gf_path :
1728 /* only log the last 512 characters of the path */
1729 gf->gf_u.gf_path + gf->gf_pathlen - 512);
1732 OBD_FREE(key, keylen);
1736 static int mdc_ioc_hsm_progress(struct obd_export *exp,
1737 struct hsm_progress_kernel *hpk)
1739 struct obd_import *imp = class_exp2cliimp(exp);
1740 struct hsm_progress_kernel *req_hpk;
1741 struct ptlrpc_request *req;
1745 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS,
1746 LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS);
1748 GOTO(out, rc = -ENOMEM);
1750 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1752 /* Copy hsm_progress struct */
1753 req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS);
1754 if (req_hpk == NULL)
1755 GOTO(out, rc = -EPROTO);
1758 req_hpk->hpk_errval = lustre_errno_hton(hpk->hpk_errval);
1760 ptlrpc_request_set_replen(req);
1762 ptlrpc_get_mod_rpc_slot(req);
1763 rc = ptlrpc_queue_wait(req);
1764 ptlrpc_put_mod_rpc_slot(req);
1768 ptlrpc_req_finished(req);
1772 * Send hsm_ct_register to MDS
1774 * \param[in] imp import
1775 * \param[in] archive_count if in bitmap format, it is the bitmap,
1776 * else it is the count of archive_ids
1777 * \param[in] archives if in bitmap format, it is NULL,
1778 * else it is archive_id lists
1780 static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archive_count,
1783 struct ptlrpc_request *req;
1784 __u32 *archive_array;
1785 size_t archives_size;
1789 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_CT_REGISTER);
1793 if (archives != NULL)
1794 archives_size = sizeof(*archive_array) * archive_count;
1796 archives_size = sizeof(archive_count);
1798 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_ARCHIVE,
1799 RCL_CLIENT, archives_size);
1801 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_CT_REGISTER);
1803 ptlrpc_request_free(req);
1807 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1809 archive_array = req_capsule_client_get(&req->rq_pill,
1810 &RMF_MDS_HSM_ARCHIVE);
1811 if (archive_array == NULL)
1812 GOTO(out, rc = -EPROTO);
1814 if (archives != NULL)
1815 memcpy(archive_array, archives, archives_size);
1817 *archive_array = archive_count;
1819 ptlrpc_request_set_replen(req);
1821 rc = mdc_queue_wait(req);
1824 ptlrpc_req_finished(req);
1828 static int mdc_ioc_hsm_current_action(struct obd_export *exp,
1829 struct md_op_data *op_data)
1831 struct hsm_current_action *hca = op_data->op_data;
1832 struct hsm_current_action *req_hca;
1833 struct ptlrpc_request *req;
1837 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1838 &RQF_MDS_HSM_ACTION);
1842 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION);
1844 ptlrpc_request_free(req);
1848 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1849 op_data->op_suppgids[0], 0);
1851 ptlrpc_request_set_replen(req);
1853 rc = mdc_queue_wait(req);
1857 req_hca = req_capsule_server_get(&req->rq_pill,
1858 &RMF_MDS_HSM_CURRENT_ACTION);
1859 if (req_hca == NULL)
1860 GOTO(out, rc = -EPROTO);
1866 ptlrpc_req_finished(req);
1870 static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp)
1872 struct ptlrpc_request *req;
1876 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER,
1878 MDS_HSM_CT_UNREGISTER);
1880 GOTO(out, rc = -ENOMEM);
1882 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1884 ptlrpc_request_set_replen(req);
1886 rc = mdc_queue_wait(req);
1889 ptlrpc_req_finished(req);
1893 static int mdc_ioc_hsm_state_get(struct obd_export *exp,
1894 struct md_op_data *op_data)
1896 struct hsm_user_state *hus = op_data->op_data;
1897 struct hsm_user_state *req_hus;
1898 struct ptlrpc_request *req;
1902 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1903 &RQF_MDS_HSM_STATE_GET);
1907 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET);
1909 ptlrpc_request_free(req);
1913 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1914 op_data->op_suppgids[0], 0);
1916 ptlrpc_request_set_replen(req);
1918 rc = mdc_queue_wait(req);
1922 req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE);
1923 if (req_hus == NULL)
1924 GOTO(out, rc = -EPROTO);
1930 ptlrpc_req_finished(req);
1934 static int mdc_ioc_hsm_state_set(struct obd_export *exp,
1935 struct md_op_data *op_data)
1937 struct hsm_state_set *hss = op_data->op_data;
1938 struct hsm_state_set *req_hss;
1939 struct ptlrpc_request *req;
1943 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1944 &RQF_MDS_HSM_STATE_SET);
1948 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET);
1950 ptlrpc_request_free(req);
1954 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1955 op_data->op_suppgids[0], 0);
1958 req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET);
1959 if (req_hss == NULL)
1960 GOTO(out, rc = -EPROTO);
1963 ptlrpc_request_set_replen(req);
1965 ptlrpc_get_mod_rpc_slot(req);
1966 rc = ptlrpc_queue_wait(req);
1967 ptlrpc_put_mod_rpc_slot(req);
1971 ptlrpc_req_finished(req);
1975 static int mdc_ioc_hsm_request(struct obd_export *exp,
1976 struct hsm_user_request *hur)
1978 struct obd_import *imp = class_exp2cliimp(exp);
1979 struct ptlrpc_request *req;
1980 struct hsm_request *req_hr;
1981 struct hsm_user_item *req_hui;
1986 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST);
1988 GOTO(out, rc = -ENOMEM);
1990 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT,
1991 hur->hur_request.hr_itemcount
1992 * sizeof(struct hsm_user_item));
1993 req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT,
1994 hur->hur_request.hr_data_len);
1996 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST);
1998 ptlrpc_request_free(req);
2002 mdc_pack_body(req, NULL, 0, 0, -1, 0);
2004 /* Copy hsm_request struct */
2005 req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST);
2007 GOTO(out, rc = -EPROTO);
2008 *req_hr = hur->hur_request;
2010 /* Copy hsm_user_item structs */
2011 req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM);
2012 if (req_hui == NULL)
2013 GOTO(out, rc = -EPROTO);
2014 memcpy(req_hui, hur->hur_user_item,
2015 hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item));
2017 /* Copy opaque field */
2018 req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA);
2019 if (req_opaque == NULL)
2020 GOTO(out, rc = -EPROTO);
2021 memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len);
2023 ptlrpc_request_set_replen(req);
2025 ptlrpc_get_mod_rpc_slot(req);
2026 rc = ptlrpc_queue_wait(req);
2027 ptlrpc_put_mod_rpc_slot(req);
2032 ptlrpc_req_finished(req);
2036 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2037 struct lustre_kernelcomm *lk);
2039 static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp,
2040 struct obd_quotactl *oqctl)
2042 struct ptlrpc_request *req;
2043 struct obd_quotactl *oqc;
2047 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
2048 &RQF_MDS_QUOTACTL, LUSTRE_MDS_VERSION,
2053 oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
2056 ptlrpc_request_set_replen(req);
2057 ptlrpc_at_set_req_timeout(req);
2059 rc = ptlrpc_queue_wait(req);
2061 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
2063 if (req->rq_repmsg &&
2064 (oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL))) {
2067 CERROR ("Can't unpack obd_quotactl\n");
2070 ptlrpc_req_finished(req);
2075 static int mdc_ioc_swap_layouts(struct obd_export *exp,
2076 struct md_op_data *op_data)
2079 struct ptlrpc_request *req;
2081 struct mdc_swap_layouts *msl, *payload;
2084 msl = op_data->op_data;
2086 /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the
2087 * first thing it will do is to cancel the 2 layout
2088 * locks held by this client.
2089 * So the client must cancel its layout locks on the 2 fids
2090 * with the request RPC to avoid extra RPC round trips.
2092 count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels,
2093 LCK_EX, MDS_INODELOCK_LAYOUT |
2094 MDS_INODELOCK_XATTR);
2095 count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels,
2096 LCK_EX, MDS_INODELOCK_LAYOUT |
2097 MDS_INODELOCK_XATTR);
2099 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2100 &RQF_MDS_SWAP_LAYOUTS);
2102 ldlm_lock_list_put(&cancels, l_bl_ast, count);
2106 rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count);
2108 ptlrpc_request_free(req);
2112 mdc_swap_layouts_pack(req, op_data);
2114 payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS);
2119 ptlrpc_request_set_replen(req);
2121 rc = ptlrpc_queue_wait(req);
2127 ptlrpc_req_finished(req);
2131 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2132 void *karg, void __user *uarg)
2134 struct obd_device *obd = exp->exp_obd;
2135 struct obd_ioctl_data *data = karg;
2136 struct obd_import *imp = obd->u.cli.cl_import;
2140 if (!try_module_get(THIS_MODULE)) {
2141 CERROR("%s: cannot get module '%s'\n", obd->obd_name,
2142 module_name(THIS_MODULE));
2146 case OBD_IOC_FID2PATH:
2147 rc = mdc_ioc_fid2path(exp, karg);
2149 case LL_IOC_HSM_CT_START:
2150 rc = mdc_ioc_hsm_ct_start(exp, karg);
2151 /* ignore if it was already registered on this MDS. */
2155 case LL_IOC_HSM_PROGRESS:
2156 rc = mdc_ioc_hsm_progress(exp, karg);
2158 case LL_IOC_HSM_STATE_GET:
2159 rc = mdc_ioc_hsm_state_get(exp, karg);
2161 case LL_IOC_HSM_STATE_SET:
2162 rc = mdc_ioc_hsm_state_set(exp, karg);
2164 case LL_IOC_HSM_ACTION:
2165 rc = mdc_ioc_hsm_current_action(exp, karg);
2167 case LL_IOC_HSM_REQUEST:
2168 rc = mdc_ioc_hsm_request(exp, karg);
2170 case OBD_IOC_CLIENT_RECOVER:
2171 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0);
2175 case IOC_OSC_SET_ACTIVE:
2176 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
2179 * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by
2180 * LMV instead of MDC. But when the cluster is upgraded from 1.8,
2181 * there'd be no LMV layer thus we might be called here. Eventually
2182 * this code should be removed.
2185 case IOC_OBD_STATFS: {
2186 struct obd_statfs stat_buf = {0};
2188 if (*((__u32 *) data->ioc_inlbuf2) != 0)
2189 GOTO(out, rc = -ENODEV);
2192 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
2193 min((int)data->ioc_plen2,
2194 (int)sizeof(struct obd_uuid))))
2195 GOTO(out, rc = -EFAULT);
2197 rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf,
2198 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
2203 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
2204 min((int) data->ioc_plen1,
2205 (int) sizeof(stat_buf))))
2206 GOTO(out, rc = -EFAULT);
2210 case OBD_IOC_QUOTACTL: {
2211 struct if_quotactl *qctl = karg;
2212 struct obd_quotactl *oqctl;
2214 OBD_ALLOC_PTR(oqctl);
2216 GOTO(out, rc = -ENOMEM);
2218 QCTL_COPY(oqctl, qctl);
2219 rc = obd_quotactl(exp, oqctl);
2221 QCTL_COPY(qctl, oqctl);
2222 qctl->qc_valid = QC_MDTIDX;
2223 qctl->obd_uuid = obd->u.cli.cl_target_uuid;
2226 OBD_FREE_PTR(oqctl);
2229 case LL_IOC_GET_CONNECT_FLAGS:
2230 if (copy_to_user(uarg, exp_connect_flags_ptr(exp),
2231 sizeof(*exp_connect_flags_ptr(exp))))
2232 GOTO(out, rc = -EFAULT);
2235 case LL_IOC_LOV_SWAP_LAYOUTS:
2236 rc = mdc_ioc_swap_layouts(exp, karg);
2239 CERROR("unrecognised ioctl: cmd = %#x\n", cmd);
2240 GOTO(out, rc = -ENOTTY);
2243 module_put(THIS_MODULE);
2248 static int mdc_get_info_rpc(struct obd_export *exp,
2249 u32 keylen, void *key,
2250 u32 vallen, void *val)
2252 struct obd_import *imp = class_exp2cliimp(exp);
2253 struct ptlrpc_request *req;
2258 req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
2262 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
2263 RCL_CLIENT, keylen);
2264 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
2265 RCL_CLIENT, sizeof(vallen));
2267 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
2269 ptlrpc_request_free(req);
2273 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
2274 memcpy(tmp, key, keylen);
2275 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
2276 memcpy(tmp, &vallen, sizeof(vallen));
2278 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
2279 RCL_SERVER, vallen);
2280 ptlrpc_request_set_replen(req);
2282 rc = ptlrpc_queue_wait(req);
2283 /* -EREMOTE means the get_info result is partial, and it needs to
2284 * continue on another MDT, see fid2path part in lmv_iocontrol */
2285 if (rc == 0 || rc == -EREMOTE) {
2286 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
2287 memcpy(val, tmp, vallen);
2288 if (ptlrpc_rep_need_swab(req)) {
2289 if (KEY_IS(KEY_FID2PATH))
2290 lustre_swab_fid2path(val);
2293 ptlrpc_req_finished(req);
2298 static void lustre_swab_hai(struct hsm_action_item *h)
2300 __swab32s(&h->hai_len);
2301 __swab32s(&h->hai_action);
2302 lustre_swab_lu_fid(&h->hai_fid);
2303 lustre_swab_lu_fid(&h->hai_dfid);
2304 __swab64s(&h->hai_cookie);
2305 __swab64s(&h->hai_extent.offset);
2306 __swab64s(&h->hai_extent.length);
2307 __swab64s(&h->hai_gid);
2310 static void lustre_swab_hal(struct hsm_action_list *h)
2312 struct hsm_action_item *hai;
2315 __swab32s(&h->hal_version);
2316 __swab32s(&h->hal_count);
2317 __swab32s(&h->hal_archive_id);
2318 __swab64s(&h->hal_flags);
2320 for (i = 0; i < h->hal_count; i++, hai = hai_next(hai))
2321 lustre_swab_hai(hai);
2324 static void lustre_swab_kuch(struct kuc_hdr *l)
2326 __swab16s(&l->kuc_magic);
2327 /* __u8 l->kuc_transport */
2328 __swab16s(&l->kuc_msgtype);
2329 __swab16s(&l->kuc_msglen);
2332 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2333 struct lustre_kernelcomm *lk)
2335 struct obd_import *imp = class_exp2cliimp(exp);
2338 if (lk->lk_group != KUC_GRP_HSM) {
2339 CERROR("Bad copytool group %d\n", lk->lk_group);
2343 CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd,
2344 lk->lk_uid, lk->lk_group, lk->lk_flags);
2346 if (lk->lk_flags & LK_FLG_STOP) {
2347 /* Unregister with the coordinator */
2348 rc = mdc_ioc_hsm_ct_unregister(imp);
2350 __u32 *archives = NULL;
2352 if ((lk->lk_flags & LK_FLG_DATANR) && lk->lk_data_count > 0)
2353 archives = lk->lk_data;
2355 rc = mdc_ioc_hsm_ct_register(imp, lk->lk_data_count, archives);
2362 * Send a message to any listening copytools
2363 * @param val KUC message (kuc_hdr + hsm_action_list)
2364 * @param len total length of message
2366 static int mdc_hsm_copytool_send(const struct obd_uuid *uuid,
2367 size_t len, void *val)
2369 struct kuc_hdr *lh = (struct kuc_hdr *)val;
2370 struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1);
2374 if (len < sizeof(*lh) + sizeof(*hal)) {
2375 CERROR("Short HSM message %zu < %zu\n", len,
2376 sizeof(*lh) + sizeof(*hal));
2379 if (lh->kuc_magic == __swab16(KUC_MAGIC)) {
2380 lustre_swab_kuch(lh);
2381 lustre_swab_hal(hal);
2382 } else if (lh->kuc_magic != KUC_MAGIC) {
2383 CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC);
2387 CDEBUG(D_HSM, " Received message mg=%x t=%d m=%d l=%d actions=%d "
2389 lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype,
2390 lh->kuc_msglen, hal->hal_count, hal->hal_fsname);
2392 /* Broadcast to HSM listeners */
2393 rc = libcfs_kkuc_group_put(uuid, KUC_GRP_HSM, lh);
2399 * callback function passed to kuc for re-registering each HSM copytool
2400 * running on MDC, after MDT shutdown/recovery.
2401 * @param data copytool registration data
2402 * @param cb_arg callback argument (obd_import)
2404 static int mdc_hsm_ct_reregister(void *data, void *cb_arg)
2406 struct obd_import *imp = (struct obd_import *)cb_arg;
2407 struct kkuc_ct_data *kcd = data;
2408 __u32 *archives = NULL;
2412 (kcd->kcd_magic != KKUC_CT_DATA_ARRAY_MAGIC &&
2413 kcd->kcd_magic != KKUC_CT_DATA_BITMAP_MAGIC))
2416 if (kcd->kcd_magic == KKUC_CT_DATA_BITMAP_MAGIC) {
2417 CDEBUG(D_HA, "%s: recover copytool registration to MDT "
2418 "(archive=%#x)\n", imp->imp_obd->obd_name,
2419 kcd->kcd_nr_archives);
2421 CDEBUG(D_HA, "%s: recover copytool registration to MDT "
2422 "(archive nr = %u)\n",
2423 imp->imp_obd->obd_name, kcd->kcd_nr_archives);
2424 if (kcd->kcd_nr_archives != 0)
2425 archives = kcd->kcd_archives;
2428 rc = mdc_ioc_hsm_ct_register(imp, kcd->kcd_nr_archives, archives);
2429 /* ignore error if the copytool is already registered */
2430 return (rc == -EEXIST) ? 0 : rc;
2434 * Re-establish all kuc contexts with MDT
2435 * after MDT shutdown/recovery.
2437 static int mdc_kuc_reregister(struct obd_import *imp)
2439 /* re-register HSM agents */
2440 return libcfs_kkuc_group_foreach(&imp->imp_obd->obd_uuid, KUC_GRP_HSM,
2441 mdc_hsm_ct_reregister, imp);
2444 static int mdc_set_info_async(const struct lu_env *env,
2445 struct obd_export *exp,
2446 u32 keylen, void *key,
2447 u32 vallen, void *val,
2448 struct ptlrpc_request_set *set)
2450 struct obd_import *imp = class_exp2cliimp(exp);
2454 if (KEY_IS(KEY_READ_ONLY)) {
2455 if (vallen != sizeof(int))
2458 spin_lock(&imp->imp_lock);
2459 if (*((int *)val)) {
2460 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
2461 imp->imp_connect_data.ocd_connect_flags |=
2464 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
2465 imp->imp_connect_data.ocd_connect_flags &=
2466 ~OBD_CONNECT_RDONLY;
2468 spin_unlock(&imp->imp_lock);
2470 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2471 keylen, key, vallen, val, set);
2474 if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2475 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2476 keylen, key, vallen, val, set);
2479 if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) {
2480 rc = mdc_hsm_copytool_send(&imp->imp_obd->obd_uuid, vallen,
2485 if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2486 __u32 *default_easize = val;
2488 exp->exp_obd->u.cli.cl_default_mds_easize = *default_easize;
2492 rc = osc_set_info_async(env, exp, keylen, key, vallen, val, set);
2496 static int mdc_get_info(const struct lu_env *env, struct obd_export *exp,
2497 __u32 keylen, void *key, __u32 *vallen, void *val)
2501 if (KEY_IS(KEY_MAX_EASIZE)) {
2502 __u32 mdsize, *max_easize;
2504 if (*vallen != sizeof(int))
2506 mdsize = *(__u32 *)val;
2507 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
2508 exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
2510 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
2512 } else if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2513 __u32 *default_easize;
2515 if (*vallen != sizeof(int))
2517 default_easize = val;
2518 *default_easize = exp->exp_obd->u.cli.cl_default_mds_easize;
2520 } else if (KEY_IS(KEY_CONN_DATA)) {
2521 struct obd_import *imp = class_exp2cliimp(exp);
2522 struct obd_connect_data *data = val;
2524 if (*vallen != sizeof(*data))
2527 *data = imp->imp_connect_data;
2529 } else if (KEY_IS(KEY_TGT_COUNT)) {
2530 *((__u32 *)val) = 1;
2534 rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
2539 static int mdc_fsync(struct obd_export *exp, const struct lu_fid *fid,
2540 struct ptlrpc_request **request)
2542 struct ptlrpc_request *req;
2547 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
2551 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
2553 ptlrpc_request_free(req);
2557 mdc_pack_body(req, fid, 0, 0, -1, 0);
2559 ptlrpc_request_set_replen(req);
2561 rc = ptlrpc_queue_wait(req);
2563 ptlrpc_req_finished(req);
2569 struct mdc_rmfid_args {
2574 int mdc_rmfid_interpret(const struct lu_env *env, struct ptlrpc_request *req,
2577 struct mdc_rmfid_args *aa;
2582 aa = ptlrpc_req_async_args(aa, req);
2584 size = req_capsule_get_size(&req->rq_pill, &RMF_RCS,
2586 LASSERT(size == sizeof(int) * aa->mra_nr);
2587 rcs = req_capsule_server_get(&req->rq_pill, &RMF_RCS);
2589 LASSERT(aa->mra_rcs);
2590 LASSERT(aa->mra_nr);
2591 memcpy(aa->mra_rcs, rcs, size);
2597 static int mdc_rmfid(struct obd_export *exp, struct fid_array *fa,
2598 int *rcs, struct ptlrpc_request_set *set)
2600 struct ptlrpc_request *req;
2601 struct mdc_rmfid_args *aa;
2607 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_RMFID);
2611 flen = fa->fa_nr * sizeof(struct lu_fid);
2612 req_capsule_set_size(&req->rq_pill, &RMF_FID_ARRAY,
2614 req_capsule_set_size(&req->rq_pill, &RMF_FID_ARRAY,
2616 req_capsule_set_size(&req->rq_pill, &RMF_RCS,
2617 RCL_SERVER, fa->fa_nr * sizeof(__u32));
2618 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_RMFID);
2620 ptlrpc_request_free(req);
2623 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FID_ARRAY);
2624 memcpy(tmp, fa->fa_fids, flen);
2626 mdc_pack_body(req, NULL, 0, 0, -1, 0);
2627 b = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
2628 b->mbo_ctime = ktime_get_real_seconds();
2630 ptlrpc_request_set_replen(req);
2633 aa = ptlrpc_req_async_args(aa, req);
2635 aa->mra_nr = fa->fa_nr;
2636 req->rq_interpret_reply = mdc_rmfid_interpret;
2638 ptlrpc_set_add_req(set, req);
2639 ptlrpc_check_set(NULL, set);
2644 static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
2645 enum obd_import_event event)
2647 struct client_obd *cli = &obd->u.cli;
2650 LASSERT(imp->imp_obd == obd);
2653 case IMP_EVENT_DISCON:
2654 spin_lock(&cli->cl_loi_list_lock);
2655 cli->cl_avail_grant = 0;
2656 cli->cl_lost_grant = 0;
2657 spin_unlock(&cli->cl_loi_list_lock);
2659 case IMP_EVENT_INACTIVE:
2661 * Flush current sequence to make client obtain new one
2662 * from server in case of disconnect/reconnect.
2664 down_read(&cli->cl_seq_rwsem);
2666 seq_client_flush(cli->cl_seq);
2667 up_read(&cli->cl_seq_rwsem);
2669 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE);
2671 case IMP_EVENT_INVALIDATE: {
2672 struct ldlm_namespace *ns = obd->obd_namespace;
2676 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2678 env = cl_env_get(&refcheck);
2680 /* Reset grants. All pages go to failing rpcs due to
2681 * the invalid import.
2683 osc_io_unplug(env, cli, NULL);
2685 cfs_hash_for_each_nolock(ns->ns_rs_hash,
2686 osc_ldlm_resource_invalidate,
2688 cl_env_put(env, &refcheck);
2689 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2695 case IMP_EVENT_ACTIVE:
2696 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE);
2697 /* redo the kuc registration after reconnecting */
2699 rc = mdc_kuc_reregister(imp);
2701 case IMP_EVENT_OCD: {
2702 struct obd_connect_data *ocd = &imp->imp_connect_data;
2704 if (OCD_HAS_FLAG(ocd, GRANT))
2705 osc_init_grant(cli, ocd);
2707 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD);
2710 case IMP_EVENT_DEACTIVATE:
2711 case IMP_EVENT_ACTIVATE:
2714 CERROR("Unknown import event %x\n", event);
2720 int mdc_fid_alloc(const struct lu_env *env, struct obd_export *exp,
2721 struct lu_fid *fid, struct md_op_data *op_data)
2723 struct client_obd *cli = &exp->exp_obd->u.cli;
2728 down_read(&cli->cl_seq_rwsem);
2730 rc = seq_client_alloc_fid(env, cli->cl_seq, fid);
2731 up_read(&cli->cl_seq_rwsem);
2736 static struct obd_uuid *mdc_get_uuid(struct obd_export *exp)
2738 struct client_obd *cli = &exp->exp_obd->u.cli;
2739 return &cli->cl_target_uuid;
2743 * Determine whether the lock can be canceled before replaying it during
2744 * recovery, non zero value will be return if the lock can be canceled,
2745 * or zero returned for not
2747 static int mdc_cancel_weight(struct ldlm_lock *lock)
2749 if (lock->l_resource->lr_type != LDLM_IBITS)
2752 /* FIXME: if we ever get into a situation where there are too many
2753 * opened files with open locks on a single node, then we really
2754 * should replay these open locks to reget it */
2755 if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN)
2758 /* Special case for DoM locks, cancel only unused and granted locks */
2759 if (ldlm_has_dom(lock) &&
2760 (lock->l_granted_mode != lock->l_req_mode ||
2761 osc_ldlm_weigh_ast(lock) != 0))
2767 static int mdc_resource_inode_free(struct ldlm_resource *res)
2769 if (res->lr_lvb_inode)
2770 res->lr_lvb_inode = NULL;
2775 static struct ldlm_valblock_ops inode_lvbo = {
2776 .lvbo_free = mdc_resource_inode_free
2779 static int mdc_llog_init(struct obd_device *obd)
2781 struct obd_llog_group *olg = &obd->obd_olg;
2782 struct llog_ctxt *ctxt;
2787 rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, obd,
2792 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
2793 llog_initiator_connect(ctxt);
2794 llog_ctxt_put(ctxt);
2799 static void mdc_llog_finish(struct obd_device *obd)
2801 struct llog_ctxt *ctxt;
2805 ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
2807 llog_cleanup(NULL, ctxt);
2812 int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
2818 rc = osc_setup_common(obd, cfg);
2822 rc = mdc_tunables_init(obd);
2824 GOTO(err_osc_cleanup, rc);
2826 obd->u.cli.cl_dom_min_inline_repsize = MDC_DOM_DEF_INLINE_REPSIZE;
2828 ns_register_cancel(obd->obd_namespace, mdc_cancel_weight);
2830 obd->obd_namespace->ns_lvbo = &inode_lvbo;
2832 rc = mdc_llog_init(obd);
2834 CERROR("%s: failed to setup llogging subsystems: rc = %d\n",
2836 GOTO(err_llog_cleanup, rc);
2839 rc = mdc_changelog_cdev_init(obd);
2841 CERROR("%s: failed to setup changelog char device: rc = %d\n",
2843 GOTO(err_changelog_cleanup, rc);
2848 err_changelog_cleanup:
2849 mdc_llog_finish(obd);
2851 lprocfs_free_md_stats(obd);
2852 ptlrpc_lprocfs_unregister_obd(obd);
2854 osc_cleanup_common(obd);
2858 /* Initialize the default and maximum LOV EA sizes. This allows
2859 * us to make MDS RPCs with large enough reply buffers to hold a default
2860 * sized EA without having to calculate this (via a call into the
2861 * LOV + OSCs) each time we make an RPC. The maximum size is also tracked
2862 * but not used to avoid wastefully vmalloc()'ing large reply buffers when
2863 * a large number of stripes is possible. If a larger reply buffer is
2864 * required it will be reallocated in the ptlrpc layer due to overflow.
2866 static int mdc_init_ea_size(struct obd_export *exp, __u32 easize,
2869 struct obd_device *obd = exp->exp_obd;
2870 struct client_obd *cli = &obd->u.cli;
2873 if (cli->cl_max_mds_easize < easize)
2874 cli->cl_max_mds_easize = easize;
2876 if (cli->cl_default_mds_easize < def_easize)
2877 cli->cl_default_mds_easize = def_easize;
2882 static int mdc_precleanup(struct obd_device *obd)
2886 osc_precleanup_common(obd);
2887 mdc_changelog_cdev_finish(obd);
2889 obd_cleanup_client_import(obd);
2890 ptlrpc_lprocfs_unregister_obd(obd);
2891 lprocfs_free_md_stats(obd);
2892 mdc_llog_finish(obd);
2896 static int mdc_cleanup(struct obd_device *obd)
2898 return osc_cleanup_common(obd);
2901 static const struct obd_ops mdc_obd_ops = {
2902 .o_owner = THIS_MODULE,
2903 .o_setup = mdc_setup,
2904 .o_precleanup = mdc_precleanup,
2905 .o_cleanup = mdc_cleanup,
2906 .o_add_conn = client_import_add_conn,
2907 .o_del_conn = client_import_del_conn,
2908 .o_connect = client_connect_import,
2909 .o_reconnect = osc_reconnect,
2910 .o_disconnect = osc_disconnect,
2911 .o_iocontrol = mdc_iocontrol,
2912 .o_set_info_async = mdc_set_info_async,
2913 .o_statfs = mdc_statfs,
2914 .o_statfs_async = mdc_statfs_async,
2915 .o_fid_init = client_fid_init,
2916 .o_fid_fini = client_fid_fini,
2917 .o_fid_alloc = mdc_fid_alloc,
2918 .o_import_event = mdc_import_event,
2919 .o_get_info = mdc_get_info,
2920 .o_get_uuid = mdc_get_uuid,
2921 .o_quotactl = mdc_quotactl,
2924 static const struct md_ops mdc_md_ops = {
2925 .m_get_root = mdc_get_root,
2926 .m_null_inode = mdc_null_inode,
2927 .m_close = mdc_close,
2928 .m_create = mdc_create,
2929 .m_enqueue = mdc_enqueue,
2930 .m_getattr = mdc_getattr,
2931 .m_getattr_name = mdc_getattr_name,
2932 .m_intent_lock = mdc_intent_lock,
2934 .m_rename = mdc_rename,
2935 .m_setattr = mdc_setattr,
2936 .m_setxattr = mdc_setxattr,
2937 .m_getxattr = mdc_getxattr,
2938 .m_fsync = mdc_fsync,
2939 .m_file_resync = mdc_file_resync,
2940 .m_read_page = mdc_read_page,
2941 .m_unlink = mdc_unlink,
2942 .m_cancel_unused = mdc_cancel_unused,
2943 .m_init_ea_size = mdc_init_ea_size,
2944 .m_set_lock_data = mdc_set_lock_data,
2945 .m_lock_match = mdc_lock_match,
2946 .m_get_lustre_md = mdc_get_lustre_md,
2947 .m_free_lustre_md = mdc_free_lustre_md,
2948 .m_set_open_replay_data = mdc_set_open_replay_data,
2949 .m_clear_open_replay_data = mdc_clear_open_replay_data,
2950 .m_intent_getattr_async = mdc_intent_getattr_async,
2951 .m_revalidate_lock = mdc_revalidate_lock,
2952 .m_rmfid = mdc_rmfid,
2955 static int __init mdc_init(void)
2957 return class_register_type(&mdc_obd_ops, &mdc_md_ops, true, NULL,
2958 LUSTRE_MDC_NAME, &mdc_device_type);
2961 static void __exit mdc_exit(void)
2963 class_unregister_type(LUSTRE_MDC_NAME);
2966 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
2967 MODULE_DESCRIPTION("Lustre Metadata Client");
2968 MODULE_VERSION(LUSTRE_VERSION_STRING);
2969 MODULE_LICENSE("GPL");
2971 module_init(mdc_init);
2972 module_exit(mdc_exit);