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>
43 #include <linux/device.h>
44 #include <linux/xarray.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_compat.h>
53 #include <lustre_fid.h>
54 #include <uapi/linux/lustre/lustre_ioctl.h>
55 #include <lustre_kernelcomm.h>
56 #include <lustre_lmv.h>
57 #include <lustre_log.h>
58 #include <lustre_swab.h>
59 #include <obd_class.h>
60 #include <lustre_osc.h>
62 #include "mdc_internal.h"
64 #define REQUEST_MINOR 244
66 static int mdc_cleanup(struct obd_device *obd);
68 static inline int mdc_queue_wait(struct ptlrpc_request *req)
70 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
73 /* obd_get_request_slot() ensures that this client has no more
74 * than cl_max_rpcs_in_flight RPCs simultaneously inf light
76 rc = obd_get_request_slot(cli);
80 rc = ptlrpc_queue_wait(req);
81 obd_put_request_slot(cli);
87 * Send MDS_GET_ROOT RPC to fetch root FID.
89 * If \a fileset is not NULL it should contain a subdirectory off
90 * the ROOT/ directory to be mounted on the client. Return the FID
91 * of the subdirectory to the client to mount onto its mountpoint.
93 * \param[in] imp MDC import
94 * \param[in] fileset fileset name, which could be NULL
95 * \param[out] rootfid root FID of this mountpoint
96 * \param[out] pc root capa will be unpacked and saved in this pointer
98 * \retval 0 on success, negative errno on failure
100 static int mdc_get_root(struct obd_export *exp, const char *fileset,
101 struct lu_fid *rootfid)
103 struct ptlrpc_request *req;
104 struct mdt_body *body;
109 if (fileset && !(exp_connect_flags(exp) & OBD_CONNECT_SUBTREE))
112 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
118 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
119 strlen(fileset) + 1);
120 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_ROOT);
122 ptlrpc_request_free(req);
125 mdc_pack_body(req, NULL, 0, 0, -1, 0);
126 if (fileset != NULL) {
127 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
129 memcpy(name, fileset, strlen(fileset));
131 lustre_msg_add_flags(req->rq_reqmsg, LUSTRE_IMP_FULL);
132 req->rq_send_state = LUSTRE_IMP_FULL;
134 ptlrpc_request_set_replen(req);
136 rc = ptlrpc_queue_wait(req);
140 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
142 GOTO(out, rc = -EPROTO);
144 *rootfid = body->mbo_fid1;
145 CDEBUG(D_NET, "root fid="DFID", last_committed=%llu\n",
146 PFID(rootfid), lustre_msg_get_last_committed(req->rq_repmsg));
149 ptlrpc_req_finished(req);
155 * This function now is known to always saying that it will receive 4 buffers
156 * from server. Even for cases when acl_size and md_size is zero, RPC header
157 * will contain 4 fields and RPC itself will contain zero size fields. This is
158 * because mdt_getattr*() _always_ returns 4 fields, but if acl is not needed
159 * and thus zero, it shrinks it, making zero size. The same story about
160 * md_size. And this is course of problem when client waits for smaller number
161 * of fields. This issue will be fixed later when client gets aware of RPC
164 static int mdc_getattr_common(struct obd_export *exp,
165 struct ptlrpc_request *req)
167 struct req_capsule *pill = &req->rq_pill;
168 struct mdt_body *body;
173 /* Request message already built. */
174 rc = ptlrpc_queue_wait(req);
178 /* sanity check for the reply */
179 body = req_capsule_server_get(pill, &RMF_MDT_BODY);
183 CDEBUG(D_NET, "mode: %o\n", body->mbo_mode);
185 mdc_update_max_ea_from_body(exp, body);
186 if (body->mbo_eadatasize != 0) {
187 eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
188 body->mbo_eadatasize);
196 static void mdc_reset_acl_req(struct ptlrpc_request *req)
198 spin_lock(&req->rq_early_free_lock);
199 sptlrpc_cli_free_repbuf(req);
200 req->rq_repbuf = NULL;
201 req->rq_repbuf_len = 0;
202 req->rq_repdata = NULL;
203 req->rq_reqdata_len = 0;
204 spin_unlock(&req->rq_early_free_lock);
207 static int mdc_getattr(struct obd_export *exp, struct md_op_data *op_data,
208 struct ptlrpc_request **request)
210 struct ptlrpc_request *req;
211 struct obd_import *imp = class_exp2cliimp(exp);
212 __u32 acl_bufsize = LUSTRE_POSIX_ACL_MAX_SIZE_OLD;
216 /* Single MDS without an LMV case */
217 if (op_data->op_flags & MF_GET_MDT_IDX) {
223 req = ptlrpc_request_alloc(imp, &RQF_MDS_GETATTR);
227 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
229 ptlrpc_request_free(req);
234 mdc_pack_body(req, &op_data->op_fid1, op_data->op_valid,
235 op_data->op_mode, -1, 0);
236 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER, acl_bufsize);
237 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
239 ptlrpc_request_set_replen(req);
241 rc = mdc_getattr_common(exp, req);
244 acl_bufsize = min_t(__u32,
245 imp->imp_connect_data.ocd_max_easize,
247 mdc_reset_acl_req(req);
251 ptlrpc_req_finished(req);
259 static int mdc_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
260 struct ptlrpc_request **request)
262 struct ptlrpc_request *req;
263 struct obd_import *imp = class_exp2cliimp(exp);
264 __u32 acl_bufsize = LUSTRE_POSIX_ACL_MAX_SIZE_OLD;
269 req = ptlrpc_request_alloc(imp, &RQF_MDS_GETATTR_NAME);
273 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
274 op_data->op_namelen + 1);
276 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME);
278 ptlrpc_request_free(req);
282 if (op_data->op_name) {
283 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
284 LASSERT(strnlen(op_data->op_name, op_data->op_namelen) ==
285 op_data->op_namelen);
286 memcpy(name, op_data->op_name, op_data->op_namelen);
290 mdc_pack_body(req, &op_data->op_fid1, op_data->op_valid,
291 op_data->op_mode, op_data->op_suppgids[0], 0);
292 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
294 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER, acl_bufsize);
295 ptlrpc_request_set_replen(req);
297 rc = mdc_getattr_common(exp, req);
300 acl_bufsize = min_t(__u32,
301 imp->imp_connect_data.ocd_max_easize,
303 mdc_reset_acl_req(req);
307 ptlrpc_req_finished(req);
315 static int mdc_xattr_common(struct obd_export *exp,const struct req_format *fmt,
316 const struct lu_fid *fid, int opcode, u64 valid,
317 const char *xattr_name, const char *input,
318 int input_size, int output_size, int flags,
319 __u32 suppgid, struct ptlrpc_request **request)
321 struct ptlrpc_request *req;
322 int xattr_namelen = 0;
328 req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
333 xattr_namelen = strlen(xattr_name) + 1;
334 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
339 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
342 /* get SELinux policy info if any */
343 rc = sptlrpc_get_sepol(req);
345 ptlrpc_request_free(req);
348 req_capsule_set_size(&req->rq_pill, &RMF_SELINUX_POL, RCL_CLIENT,
349 strlen(req->rq_sepol) ?
350 strlen(req->rq_sepol) + 1 : 0);
352 /* Flush local XATTR locks to get rid of a possible cancel RPC */
353 if (opcode == MDS_REINT && fid_is_sane(fid) &&
354 exp->exp_connect_data.ocd_ibits_known & MDS_INODELOCK_XATTR) {
358 /* Without that packing would fail */
360 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
363 count = mdc_resource_get_unused(exp, fid,
365 MDS_INODELOCK_XATTR);
367 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
369 ptlrpc_request_free(req);
373 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
375 ptlrpc_request_free(req);
380 if (opcode == MDS_REINT) {
381 struct mdt_rec_setxattr *rec;
383 BUILD_BUG_ON(sizeof(struct mdt_rec_setxattr) !=
384 sizeof(struct mdt_rec_reint));
385 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
386 rec->sx_opcode = REINT_SETXATTR;
387 rec->sx_fsuid = from_kuid(&init_user_ns, current_fsuid());
388 rec->sx_fsgid = from_kgid(&init_user_ns, current_fsgid());
389 rec->sx_cap = cfs_curproc_cap_pack();
390 rec->sx_suppgid1 = suppgid;
391 rec->sx_suppgid2 = -1;
393 rec->sx_valid = valid | OBD_MD_FLCTIME;
394 rec->sx_time = ktime_get_real_seconds();
395 rec->sx_size = output_size;
396 rec->sx_flags = flags;
398 mdc_pack_body(req, fid, valid, output_size, suppgid, flags);
402 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
403 memcpy(tmp, xattr_name, xattr_namelen);
406 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
407 memcpy(tmp, input, input_size);
410 mdc_file_sepol_pack(req);
412 if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
413 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
414 RCL_SERVER, output_size);
415 ptlrpc_request_set_replen(req);
418 if (opcode == MDS_REINT)
419 ptlrpc_get_mod_rpc_slot(req);
421 rc = ptlrpc_queue_wait(req);
423 if (opcode == MDS_REINT)
424 ptlrpc_put_mod_rpc_slot(req);
427 ptlrpc_req_finished(req);
433 static int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
434 u64 obd_md_valid, const char *name,
435 const void *value, size_t value_size,
436 unsigned int xattr_flags, u32 suppgid,
437 struct ptlrpc_request **req)
439 LASSERT(obd_md_valid == OBD_MD_FLXATTR ||
440 obd_md_valid == OBD_MD_FLXATTRRM);
442 return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
443 fid, MDS_REINT, obd_md_valid, name,
444 value, value_size, 0, xattr_flags, suppgid,
448 static int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
449 u64 obd_md_valid, const char *name, size_t buf_size,
450 struct ptlrpc_request **req)
452 struct mdt_body *body;
455 LASSERT(obd_md_valid == OBD_MD_FLXATTR ||
456 obd_md_valid == OBD_MD_FLXATTRLS);
458 /* Message below is checked in sanity-selinux test_20d
459 * and sanity-sec test_49
461 CDEBUG(D_INFO, "%s: get xattr '%s' for "DFID"\n",
462 exp->exp_obd->obd_name, name, PFID(fid));
463 rc = mdc_xattr_common(exp, &RQF_MDS_GETXATTR, fid, MDS_GETXATTR,
464 obd_md_valid, name, NULL, 0, buf_size, 0, -1,
469 body = req_capsule_server_get(&(*req)->rq_pill, &RMF_MDT_BODY);
471 GOTO(out, rc = -EPROTO);
473 /* only detect the xattr size */
475 /* LU-11109: Older MDTs do not distinguish
476 * between nonexistent xattrs and zero length
477 * values in this case. Newer MDTs will return
478 * -ENODATA or set OBD_MD_FLXATTR. */
479 GOTO(out, rc = body->mbo_eadatasize);
482 if (body->mbo_eadatasize == 0) {
483 /* LU-11109: Newer MDTs set OBD_MD_FLXATTR on
484 * success so that we can distinguish between
485 * zero length value and nonexistent xattr.
487 * If OBD_MD_FLXATTR is not set then we keep
488 * the old behavior and return -ENODATA for
489 * getxattr() when mbo_eadatasize is 0. But
490 * -ENODATA only makes sense for getxattr()
491 * and not for listxattr(). */
492 if (body->mbo_valid & OBD_MD_FLXATTR)
494 else if (obd_md_valid == OBD_MD_FLXATTR)
495 GOTO(out, rc = -ENODATA);
500 GOTO(out, rc = body->mbo_eadatasize);
503 ptlrpc_req_finished(*req);
510 static int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
511 struct obd_export *dt_exp,
512 struct obd_export *md_exp,
513 struct lustre_md *md)
515 struct req_capsule *pill = &req->rq_pill;
520 memset(md, 0, sizeof(*md));
522 md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
523 LASSERT(md->body != NULL);
525 if (md->body->mbo_valid & OBD_MD_FLEASIZE) {
526 if (!S_ISREG(md->body->mbo_mode)) {
527 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
528 "regular file, but is not\n");
529 GOTO(out, rc = -EPROTO);
532 if (md->body->mbo_eadatasize == 0) {
533 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
534 "but eadatasize 0\n");
535 GOTO(out, rc = -EPROTO);
538 md->layout.lb_len = md->body->mbo_eadatasize;
539 md->layout.lb_buf = req_capsule_server_sized_get(pill,
542 if (md->layout.lb_buf == NULL)
543 GOTO(out, rc = -EPROTO);
544 } else if (md->body->mbo_valid & OBD_MD_FLDIREA) {
545 const union lmv_mds_md *lmv;
548 if (!S_ISDIR(md->body->mbo_mode)) {
549 CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
550 "directory, but is not\n");
551 GOTO(out, rc = -EPROTO);
554 if (md->body->mbo_valid & OBD_MD_MEA) {
555 lmv_size = md->body->mbo_eadatasize;
557 CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
558 "but eadatasize 0\n");
562 lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
565 GOTO(out, rc = -EPROTO);
567 rc = md_unpackmd(md_exp, &md->lmv, lmv, lmv_size);
571 if (rc < (int)sizeof(*md->lmv)) {
572 struct lmv_foreign_md *lfm = md->lfm;
574 /* short (< sizeof(struct lmv_stripe_md))
577 if (lfm->lfm_magic != LMV_MAGIC_FOREIGN) {
579 "lmv size too small: %d < %d\n",
580 rc, (int)sizeof(*md->lmv));
581 GOTO(out, rc = -EPROTO);
586 /* since 2.12.58 intent_getattr fetches default LMV */
587 if (md->body->mbo_valid & OBD_MD_DEFAULT_MEA) {
588 lmv_size = sizeof(struct lmv_user_md);
589 lmv = req_capsule_server_sized_get(pill,
593 GOTO(out, rc = -EPROTO);
595 rc = md_unpackmd(md_exp, &md->default_lmv, lmv,
600 if (rc < (int)sizeof(*md->default_lmv)) {
602 "default lmv size too small: %d < %d\n",
603 rc, (int)sizeof(*md->default_lmv));
604 GOTO(out, rc = -EPROTO);
610 if (md->body->mbo_valid & OBD_MD_FLACL) {
611 /* for ACL, it's possible that FLACL is set but aclsize is zero.
612 * only when aclsize != 0 there's an actual segment for ACL
615 rc = mdc_unpack_acl(req, md);
628 static int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
634 void mdc_replay_open(struct ptlrpc_request *req)
636 struct md_open_data *mod = req->rq_cb_data;
637 struct ptlrpc_request *close_req;
638 struct obd_client_handle *och;
639 struct lustre_handle old_open_handle = { };
640 struct mdt_body *body;
641 struct ldlm_reply *rep;
645 DEBUG_REQ(D_ERROR, req,
646 "cannot properly replay without open data");
651 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
652 LASSERT(body != NULL);
654 rep = req_capsule_server_get(&req->rq_pill, &RMF_DLM_REP);
655 if (rep != NULL && rep->lock_policy_res2 != 0)
656 DEBUG_REQ(D_ERROR, req, "Open request replay failed with %ld ",
657 (long int)rep->lock_policy_res2);
659 spin_lock(&req->rq_lock);
661 if (och && och->och_open_handle.cookie)
662 req->rq_early_free_repbuf = 1;
664 req->rq_early_free_repbuf = 0;
665 spin_unlock(&req->rq_lock);
667 if (req->rq_early_free_repbuf) {
668 struct lustre_handle *file_open_handle;
670 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
672 file_open_handle = &och->och_open_handle;
673 CDEBUG(D_HA, "updating handle from %#llx to %#llx\n",
674 file_open_handle->cookie, body->mbo_open_handle.cookie);
675 old_open_handle = *file_open_handle;
676 *file_open_handle = body->mbo_open_handle;
679 close_req = mod->mod_close_req;
681 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
682 struct mdt_ioepoch *epoch;
684 LASSERT(opc == MDS_CLOSE);
685 epoch = req_capsule_client_get(&close_req->rq_pill,
689 if (req->rq_early_free_repbuf)
690 LASSERT(old_open_handle.cookie ==
691 epoch->mio_open_handle.cookie);
693 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
694 epoch->mio_open_handle = body->mbo_open_handle;
699 void mdc_commit_open(struct ptlrpc_request *req)
701 struct md_open_data *mod = req->rq_cb_data;
706 * No need to touch md_open_data::mod_och, it holds a reference on
707 * \var mod and will zero references to each other, \var mod will be
708 * freed after that when md_open_data::mod_och will put the reference.
712 * Do not let open request to disappear as it still may be needed
713 * for close rpc to happen (it may happen on evict only, otherwise
714 * ptlrpc_request::rq_replay does not let mdc_commit_open() to be
715 * called), just mark this rpc as committed to distinguish these 2
716 * cases, see mdc_close() for details. The open request reference will
717 * be put along with freeing \var mod.
719 ptlrpc_request_addref(req);
720 spin_lock(&req->rq_lock);
721 req->rq_committed = 1;
722 spin_unlock(&req->rq_lock);
723 req->rq_cb_data = NULL;
727 int mdc_set_open_replay_data(struct obd_export *exp,
728 struct obd_client_handle *och,
729 struct lookup_intent *it)
731 struct md_open_data *mod;
732 struct mdt_rec_create *rec;
733 struct mdt_body *body;
734 struct ptlrpc_request *open_req = it->it_request;
735 struct obd_import *imp = open_req->rq_import;
738 if (!open_req->rq_replay)
741 rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
742 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
743 LASSERT(rec != NULL);
744 /* Incoming message in my byte order (it's been swabbed). */
745 /* Outgoing messages always in my byte order. */
746 LASSERT(body != NULL);
748 /* Only if the import is replayable, we set replay_open data */
749 if (och && imp->imp_replayable) {
750 mod = obd_mod_alloc();
752 DEBUG_REQ(D_ERROR, open_req,
753 "cannot allocate md_open_data");
758 * Take a reference on \var mod, to be freed on mdc_close().
759 * It protects \var mod from being freed on eviction (commit
760 * callback is called despite rq_replay flag).
761 * Another reference for \var och.
766 spin_lock(&open_req->rq_lock);
769 mod->mod_is_create = it_disposition(it, DISP_OPEN_CREATE) ||
770 it_disposition(it, DISP_OPEN_STRIPE);
771 mod->mod_open_req = open_req;
772 open_req->rq_cb_data = mod;
773 open_req->rq_commit_cb = mdc_commit_open;
774 open_req->rq_early_free_repbuf = 1;
775 spin_unlock(&open_req->rq_lock);
778 rec->cr_fid2 = body->mbo_fid1;
779 rec->cr_open_handle_old = body->mbo_open_handle;
780 open_req->rq_replay_cb = mdc_replay_open;
781 if (!fid_is_sane(&body->mbo_fid1)) {
782 DEBUG_REQ(D_ERROR, open_req,
783 "saving replay request with insane FID " DFID,
784 PFID(&body->mbo_fid1));
788 DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
792 static void mdc_free_open(struct md_open_data *mod)
796 if (mod->mod_is_create == 0 &&
797 imp_connect_disp_stripe(mod->mod_open_req->rq_import))
801 * No reason to asssert here if the open request has
802 * rq_replay == 1. It means that mdc_close failed, and
803 * close request wasn`t sent. It is not fatal to client.
804 * The worst thing is eviction if the client gets open lock
807 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req,
808 "free open request, rq_replay=%d",
809 mod->mod_open_req->rq_replay);
811 ptlrpc_request_committed(mod->mod_open_req, committed);
812 if (mod->mod_close_req)
813 ptlrpc_request_committed(mod->mod_close_req, committed);
816 static int mdc_clear_open_replay_data(struct obd_export *exp,
817 struct obd_client_handle *och)
819 struct md_open_data *mod = och->och_mod;
823 * It is possible to not have \var mod in a case of eviction between
824 * lookup and ll_file_open().
829 LASSERT(mod != LP_POISON);
830 LASSERT(mod->mod_open_req != NULL);
832 spin_lock(&mod->mod_open_req->rq_lock);
834 mod->mod_och->och_open_handle.cookie = 0;
835 mod->mod_open_req->rq_early_free_repbuf = 0;
836 spin_unlock(&mod->mod_open_req->rq_lock);
846 static int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
847 struct md_open_data *mod, struct ptlrpc_request **request)
849 struct obd_device *obd = class_exp2obd(exp);
850 struct ptlrpc_request *req;
851 struct req_format *req_fmt;
852 size_t u32_count = 0;
857 CDEBUG(D_INODE, "%s: "DFID" file closed with intent: %x\n",
858 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
861 if (op_data->op_bias & MDS_CLOSE_INTENT) {
862 req_fmt = &RQF_MDS_CLOSE_INTENT;
863 if (op_data->op_bias & MDS_HSM_RELEASE) {
864 /* allocate a FID for volatile file */
865 rc = mdc_fid_alloc(NULL, exp, &op_data->op_fid2,
868 CERROR("%s: "DFID" allocating FID: rc = %d\n",
869 obd->obd_name, PFID(&op_data->op_fid1),
871 /* save the errcode and proceed to close */
875 if (op_data->op_bias & MDS_CLOSE_RESYNC_DONE) {
876 size_t count = op_data->op_data_size / sizeof(__u32);
878 if (count > INLINE_RESYNC_ARRAY_SIZE)
882 req_fmt = &RQF_MDS_CLOSE;
886 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_CLOSE))
889 req = ptlrpc_request_alloc(class_exp2cliimp(exp), req_fmt);
891 /* Ensure that this close's handle is fixed up during replay. */
892 if (likely(mod != NULL)) {
893 LASSERTF(mod->mod_open_req != NULL &&
894 mod->mod_open_req->rq_type != LI_POISON,
895 "POISONED open %p!\n", mod->mod_open_req);
897 mod->mod_close_req = req;
899 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req, "matched open");
900 /* We no longer want to preserve this open for replay even
901 * though the open was committed. b=3632, b=3633 */
902 spin_lock(&mod->mod_open_req->rq_lock);
903 mod->mod_open_req->rq_replay = 0;
904 spin_unlock(&mod->mod_open_req->rq_lock);
906 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
910 * TODO: repeat close after errors
912 CWARN("%s: close of FID "DFID" failed, file reference will be "
913 "dropped when this client unmounts or is evicted\n",
914 obd->obd_name, PFID(&op_data->op_fid1));
915 GOTO(out, rc = -ENOMEM);
919 req_capsule_set_size(&req->rq_pill, &RMF_U32, RCL_CLIENT,
920 u32_count * sizeof(__u32));
922 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
924 ptlrpc_request_free(req);
929 /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
930 * portal whose threads are not taking any DLM locks and are therefore
931 * always progressing */
932 req->rq_request_portal = MDS_READPAGE_PORTAL;
933 ptlrpc_at_set_req_timeout(req);
935 if (!(exp_connect_flags2(exp) & OBD_CONNECT2_LSOM))
936 op_data->op_xvalid &= ~(OP_XVALID_LAZYSIZE |
937 OP_XVALID_LAZYBLOCKS);
939 mdc_close_pack(req, op_data);
941 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
942 obd->u.cli.cl_default_mds_easize);
944 ptlrpc_request_set_replen(req);
946 ptlrpc_get_mod_rpc_slot(req);
947 rc = ptlrpc_queue_wait(req);
948 ptlrpc_put_mod_rpc_slot(req);
950 if (req->rq_repmsg == NULL) {
951 CDEBUG(D_RPCTRACE, "request %p failed to send: rc = %d\n", req,
954 rc = req->rq_status ?: -EIO;
955 } else if (rc == 0 || rc == -EAGAIN) {
956 struct mdt_body *body;
958 rc = lustre_msg_get_status(req->rq_repmsg);
959 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
960 DEBUG_REQ(D_ERROR, req,
961 "type = PTL_RPC_MSG_ERR: rc = %d", rc);
965 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
968 } else if (rc == -ESTALE) {
970 * it can be allowed error after 3633 if open was committed and
971 * server failed before close was sent. Let's check if mod
972 * exists and return no error in that case
975 DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc);
976 LASSERT(mod->mod_open_req != NULL);
977 if (mod->mod_open_req->rq_committed)
985 mod->mod_close_req = NULL;
986 /* Since now, mod is accessed through open_req only,
987 * thus close req does not keep a reference on mod anymore. */
992 RETURN(rc < 0 ? rc : saved_rc);
995 static int mdc_getpage(struct obd_export *exp, const struct lu_fid *fid,
996 u64 offset, struct page **pages, int npages,
997 struct ptlrpc_request **request)
999 struct ptlrpc_request *req;
1000 struct ptlrpc_bulk_desc *desc;
1009 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
1013 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
1015 ptlrpc_request_free(req);
1019 req->rq_request_portal = MDS_READPAGE_PORTAL;
1020 ptlrpc_at_set_req_timeout(req);
1022 desc = ptlrpc_prep_bulk_imp(req, npages, 1,
1023 PTLRPC_BULK_PUT_SINK,
1025 &ptlrpc_bulk_kiov_pin_ops);
1027 ptlrpc_req_finished(req);
1031 /* NB req now owns desc and will free it when it gets freed */
1032 for (i = 0; i < npages; i++)
1033 desc->bd_frag_ops->add_kiov_frag(desc, pages[i], 0,
1036 mdc_readdir_pack(req, offset, PAGE_SIZE * npages, fid);
1038 ptlrpc_request_set_replen(req);
1039 rc = ptlrpc_queue_wait(req);
1041 ptlrpc_req_finished(req);
1042 if (rc != -ETIMEDOUT)
1046 if (!client_should_resend(resends, &exp->exp_obd->u.cli)) {
1047 CERROR("%s: too many resend retries: rc = %d\n",
1048 exp->exp_obd->obd_name, -EIO);
1052 /* If a signal interrupts then the timeout returned will
1053 * not be zero. In that case return -EINTR
1055 if (msleep_interruptible(resends * 1000))
1061 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
1062 req->rq_bulk->bd_nob_transferred);
1064 ptlrpc_req_finished(req);
1068 if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) {
1069 CERROR("%s: unexpected bytes transferred: %d (%ld expected)\n",
1070 exp->exp_obd->obd_name, req->rq_bulk->bd_nob_transferred,
1071 PAGE_SIZE * npages);
1072 ptlrpc_req_finished(req);
1080 static void mdc_release_page(struct page *page, int remove)
1084 if (likely(page->mapping != NULL))
1085 delete_from_page_cache(page);
1091 static struct page *mdc_page_locate(struct address_space *mapping, __u64 *hash,
1092 __u64 *start, __u64 *end, int hash64)
1095 * Complement of hash is used as an index so that
1096 * radix_tree_gang_lookup() can be used to find a page with starting
1097 * hash _smaller_ than one we are looking for.
1099 unsigned long offset = hash_x_index(*hash, hash64);
1101 unsigned long flags;
1104 ll_xa_lock_irqsave(&mapping->i_pages, flags);
1105 found = radix_tree_gang_lookup(&mapping->page_tree,
1106 (void **)&page, offset, 1);
1107 if (found > 0 && !ll_xa_is_value(page)) {
1108 struct lu_dirpage *dp;
1111 ll_xa_unlock_irqrestore(&mapping->i_pages, flags);
1113 * In contrast to find_lock_page() we are sure that directory
1114 * page cannot be truncated (while DLM lock is held) and,
1115 * hence, can avoid restart.
1117 * In fact, page cannot be locked here at all, because
1118 * mdc_read_page_remote does synchronous io.
1120 wait_on_page_locked(page);
1121 if (PageUptodate(page)) {
1123 if (BITS_PER_LONG == 32 && hash64) {
1124 *start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1125 *end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1126 *hash = *hash >> 32;
1128 *start = le64_to_cpu(dp->ldp_hash_start);
1129 *end = le64_to_cpu(dp->ldp_hash_end);
1131 if (unlikely(*start == 1 && *hash == 0))
1134 LASSERTF(*start <= *hash, "start = %#llx"
1135 ",end = %#llx,hash = %#llx\n",
1136 *start, *end, *hash);
1137 CDEBUG(D_VFSTRACE, "offset %lx [%#llx %#llx],"
1138 " hash %#llx\n", offset, *start, *end, *hash);
1141 mdc_release_page(page, 0);
1143 } else if (*end != *start && *hash == *end) {
1145 * upon hash collision, remove this page,
1146 * otherwise put page reference, and
1147 * mdc_read_page_remote() will issue RPC to
1148 * fetch the page we want.
1151 mdc_release_page(page,
1152 le32_to_cpu(dp->ldp_flags) & LDF_COLLIDE);
1157 page = ERR_PTR(-EIO);
1160 ll_xa_unlock_irqrestore(&mapping->i_pages, flags);
1167 * Adjust a set of pages, each page containing an array of lu_dirpages,
1168 * so that each page can be used as a single logical lu_dirpage.
1170 * A lu_dirpage is laid out as follows, where s = ldp_hash_start,
1171 * e = ldp_hash_end, f = ldp_flags, p = padding, and each "ent" is a
1172 * struct lu_dirent. It has size up to LU_PAGE_SIZE. The ldp_hash_end
1173 * value is used as a cookie to request the next lu_dirpage in a
1174 * directory listing that spans multiple pages (two in this example):
1177 * .|--------v------- -----.
1178 * |s|e|f|p|ent|ent| ... |ent|
1179 * '--|-------------- -----' Each PAGE contains a single
1180 * '------. lu_dirpage.
1181 * .---------v------- -----.
1182 * |s|e|f|p|ent| 0 | ... | 0 |
1183 * '----------------- -----'
1185 * However, on hosts where the native VM page size (PAGE_SIZE) is
1186 * larger than LU_PAGE_SIZE, a single host page may contain multiple
1187 * lu_dirpages. After reading the lu_dirpages from the MDS, the
1188 * ldp_hash_end of the first lu_dirpage refers to the one immediately
1189 * after it in the same PAGE (arrows simplified for brevity, but
1190 * in general e0==s1, e1==s2, etc.):
1192 * .-------------------- -----.
1193 * |s0|e0|f0|p|ent|ent| ... |ent|
1194 * |---v---------------- -----|
1195 * |s1|e1|f1|p|ent|ent| ... |ent|
1196 * |---v---------------- -----| Here, each PAGE contains
1197 * ... multiple lu_dirpages.
1198 * |---v---------------- -----|
1199 * |s'|e'|f'|p|ent|ent| ... |ent|
1200 * '---|---------------- -----'
1202 * .----------------------------.
1205 * This structure is transformed into a single logical lu_dirpage as follows:
1207 * - Replace e0 with e' so the request for the next lu_dirpage gets the page
1208 * labeled 'next PAGE'.
1210 * - Copy the LDF_COLLIDE flag from f' to f0 to correctly reflect whether
1211 * a hash collision with the next page exists.
1213 * - Adjust the lde_reclen of the ending entry of each lu_dirpage to span
1214 * to the first entry of the next lu_dirpage.
1216 #if PAGE_SIZE > LU_PAGE_SIZE
1217 static void mdc_adjust_dirpages(struct page **pages, int cfs_pgs, int lu_pgs)
1221 for (i = 0; i < cfs_pgs; i++) {
1222 struct lu_dirpage *dp = kmap(pages[i]);
1223 struct lu_dirpage *first = dp;
1224 struct lu_dirent *end_dirent = NULL;
1225 struct lu_dirent *ent;
1226 __u64 hash_end = dp->ldp_hash_end;
1227 __u32 flags = dp->ldp_flags;
1229 while (--lu_pgs > 0) {
1230 ent = lu_dirent_start(dp);
1231 for (end_dirent = ent; ent != NULL;
1232 end_dirent = ent, ent = lu_dirent_next(ent));
1234 /* Advance dp to next lu_dirpage. */
1235 dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE);
1237 /* Check if we've reached the end of the PAGE. */
1238 if (!((unsigned long)dp & ~PAGE_MASK))
1241 /* Save the hash and flags of this lu_dirpage. */
1242 hash_end = dp->ldp_hash_end;
1243 flags = dp->ldp_flags;
1245 /* Check if lu_dirpage contains no entries. */
1246 if (end_dirent == NULL)
1249 /* Enlarge the end entry lde_reclen from 0 to
1250 * first entry of next lu_dirpage. */
1251 LASSERT(le16_to_cpu(end_dirent->lde_reclen) == 0);
1252 end_dirent->lde_reclen =
1253 cpu_to_le16((char *)(dp->ldp_entries) -
1254 (char *)end_dirent);
1257 first->ldp_hash_end = hash_end;
1258 first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE);
1259 first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE);
1263 LASSERTF(lu_pgs == 0, "left = %d\n", lu_pgs);
1266 #define mdc_adjust_dirpages(pages, cfs_pgs, lu_pgs) do {} while (0)
1267 #endif /* PAGE_SIZE > LU_PAGE_SIZE */
1269 /* parameters for readdir page */
1270 struct readpage_param {
1271 struct md_op_data *rp_mod;
1274 struct obd_export *rp_exp;
1275 struct md_callback *rp_cb;
1279 * Read pages from server.
1281 * Page in MDS_READPAGE RPC is packed in LU_PAGE_SIZE, and each page contains
1282 * a header lu_dirpage which describes the start/end hash, and whether this
1283 * page is empty (contains no dir entry) or hash collide with next page.
1284 * After client receives reply, several pages will be integrated into dir page
1285 * in PAGE_SIZE (if PAGE_SIZE greater than LU_PAGE_SIZE), and the
1286 * lu_dirpage for this integrated page will be adjusted.
1288 static int mdc_read_page_remote(void *data, struct page *page0)
1290 struct readpage_param *rp = data;
1291 struct page **page_pool;
1293 struct lu_dirpage *dp;
1294 struct md_op_data *op_data = rp->rp_mod;
1295 struct ptlrpc_request *req;
1297 struct inode *inode;
1299 int rd_pgs = 0; /* number of pages actually read */
1305 max_pages = rp->rp_exp->exp_obd->u.cli.cl_max_pages_per_rpc;
1306 inode = op_data->op_data;
1307 fid = &op_data->op_fid1;
1308 LASSERT(inode != NULL);
1310 OBD_ALLOC_PTR_ARRAY(page_pool, max_pages);
1311 if (page_pool != NULL) {
1312 page_pool[0] = page0;
1318 for (npages = 1; npages < max_pages; npages++) {
1319 page = page_cache_alloc(inode->i_mapping);
1322 page_pool[npages] = page;
1325 rc = mdc_getpage(rp->rp_exp, fid, rp->rp_off, page_pool, npages, &req);
1327 /* page0 is special, which was added into page cache early */
1328 delete_from_page_cache(page0);
1332 rd_pgs = (req->rq_bulk->bd_nob_transferred + PAGE_SIZE - 1) >>
1334 lu_pgs = req->rq_bulk->bd_nob_transferred >> LU_PAGE_SHIFT;
1335 LASSERT(!(req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK));
1337 CDEBUG(D_INODE, "read %d(%d) pages\n", rd_pgs, lu_pgs);
1339 mdc_adjust_dirpages(page_pool, rd_pgs, lu_pgs);
1341 SetPageUptodate(page0);
1345 ptlrpc_req_finished(req);
1346 CDEBUG(D_CACHE, "read %d/%d pages\n", rd_pgs, npages);
1347 for (i = 1; i < npages; i++) {
1348 unsigned long offset;
1352 page = page_pool[i];
1354 if (rc < 0 || i >= rd_pgs) {
1359 SetPageUptodate(page);
1362 hash = le64_to_cpu(dp->ldp_hash_start);
1365 offset = hash_x_index(hash, rp->rp_hash64);
1367 prefetchw(&page->flags);
1368 ret = add_to_page_cache_lru(page, inode->i_mapping, offset,
1373 CDEBUG(D_VFSTRACE, "page %lu add to page cache failed:"
1374 " rc = %d\n", offset, ret);
1378 if (page_pool != &page0)
1379 OBD_FREE_PTR_ARRAY(page_pool, max_pages);
1385 * Read dir page from cache first, if it can not find it, read it from
1386 * server and add into the cache.
1388 * \param[in] exp MDC export
1389 * \param[in] op_data client MD stack parameters, transfering parameters
1390 * between different layers on client MD stack.
1391 * \param[in] cb_op callback required for ldlm lock enqueue during
1393 * \param[in] hash_offset the hash offset of the page to be read
1394 * \param[in] ppage the page to be read
1396 * retval = 0 get the page successfully
1397 * errno(<0) get the page failed
1399 static int mdc_read_page(struct obd_export *exp, struct md_op_data *op_data,
1400 struct md_callback *cb_op, __u64 hash_offset,
1401 struct page **ppage)
1403 struct lookup_intent it = { .it_op = IT_READDIR };
1405 struct inode *dir = op_data->op_data;
1406 struct address_space *mapping;
1407 struct lu_dirpage *dp;
1410 struct lustre_handle lockh;
1411 struct ptlrpc_request *enq_req = NULL;
1412 struct readpage_param rp_param;
1419 LASSERT(dir != NULL);
1420 mapping = dir->i_mapping;
1422 rc = mdc_intent_lock(exp, op_data, &it, &enq_req,
1423 cb_op->md_blocking_ast, 0);
1424 if (enq_req != NULL)
1425 ptlrpc_req_finished(enq_req);
1428 CERROR("%s: "DFID" lock enqueue fails: rc = %d\n",
1429 exp->exp_obd->obd_name, PFID(&op_data->op_fid1), rc);
1434 lockh.cookie = it.it_lock_handle;
1435 mdc_set_lock_data(exp, &lockh, dir, NULL);
1437 rp_param.rp_off = hash_offset;
1438 rp_param.rp_hash64 = op_data->op_cli_flags & CLI_HASH64;
1439 page = mdc_page_locate(mapping, &rp_param.rp_off, &start, &end,
1440 rp_param.rp_hash64);
1442 CERROR("%s: dir page locate: "DFID" at %llu: rc %ld\n",
1443 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1444 rp_param.rp_off, PTR_ERR(page));
1445 GOTO(out_unlock, rc = PTR_ERR(page));
1446 } else if (page != NULL) {
1448 * XXX nikita: not entirely correct handling of a corner case:
1449 * suppose hash chain of entries with hash value HASH crosses
1450 * border between pages P0 and P1. First both P0 and P1 are
1451 * cached, seekdir() is called for some entry from the P0 part
1452 * of the chain. Later P0 goes out of cache. telldir(HASH)
1453 * happens and finds P1, as it starts with matching hash
1454 * value. Remaining entries from P0 part of the chain are
1455 * skipped. (Is that really a bug?)
1457 * Possible solutions: 0. don't cache P1 is such case, handle
1458 * it as an "overflow" page. 1. invalidate all pages at
1459 * once. 2. use HASH|1 as an index for P1.
1461 GOTO(hash_collision, page);
1464 rp_param.rp_exp = exp;
1465 rp_param.rp_mod = op_data;
1466 page = read_cache_page(mapping,
1467 hash_x_index(rp_param.rp_off,
1468 rp_param.rp_hash64),
1469 mdc_read_page_remote, &rp_param);
1471 CDEBUG(D_INFO, "%s: read cache page: "DFID" at %llu: %ld\n",
1472 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1473 rp_param.rp_off, PTR_ERR(page));
1474 GOTO(out_unlock, rc = PTR_ERR(page));
1477 wait_on_page_locked(page);
1479 if (!PageUptodate(page)) {
1480 CERROR("%s: page not updated: "DFID" at %llu: rc %d\n",
1481 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1482 rp_param.rp_off, -5);
1485 if (!PageChecked(page))
1486 SetPageChecked(page);
1487 if (PageError(page)) {
1488 CERROR("%s: page error: "DFID" at %llu: rc %d\n",
1489 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1490 rp_param.rp_off, -5);
1495 dp = page_address(page);
1496 if (BITS_PER_LONG == 32 && rp_param.rp_hash64) {
1497 start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1498 end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1499 rp_param.rp_off = hash_offset >> 32;
1501 start = le64_to_cpu(dp->ldp_hash_start);
1502 end = le64_to_cpu(dp->ldp_hash_end);
1503 rp_param.rp_off = hash_offset;
1506 LASSERT(start == rp_param.rp_off);
1507 CWARN("Page-wide hash collision: %#lx\n", (unsigned long)end);
1508 #if BITS_PER_LONG == 32
1509 CWARN("Real page-wide hash collision at [%llu %llu] with "
1510 "hash %llu\n", le64_to_cpu(dp->ldp_hash_start),
1511 le64_to_cpu(dp->ldp_hash_end), hash_offset);
1515 * Fetch whole overflow chain...
1523 ldlm_lock_decref(&lockh, it.it_lock_mode);
1527 mdc_release_page(page, 1);
1532 static int mdc_statfs_interpret(const struct lu_env *env,
1533 struct ptlrpc_request *req, void *args, int rc)
1535 struct obd_info *oinfo = args;
1536 struct obd_statfs *osfs;
1539 osfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1543 oinfo->oi_osfs = osfs;
1545 CDEBUG(D_CACHE, "blocks=%llu free=%llu avail=%llu "
1546 "objects=%llu free=%llu state=%x\n",
1547 osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
1548 osfs->os_files, osfs->os_ffree, osfs->os_state);
1551 oinfo->oi_cb_up(oinfo, rc);
1556 static int mdc_statfs_async(struct obd_export *exp,
1557 struct obd_info *oinfo, time64_t max_age,
1558 struct ptlrpc_request_set *unused)
1560 struct ptlrpc_request *req;
1561 struct obd_info *aa;
1563 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_STATFS,
1564 LUSTRE_MDS_VERSION, MDS_STATFS);
1568 ptlrpc_request_set_replen(req);
1569 req->rq_interpret_reply = mdc_statfs_interpret;
1571 aa = ptlrpc_req_async_args(aa, req);
1574 ptlrpcd_add_req(req);
1579 static int mdc_statfs(const struct lu_env *env,
1580 struct obd_export *exp, struct obd_statfs *osfs,
1581 time64_t max_age, __u32 flags)
1583 struct obd_device *obd = class_exp2obd(exp);
1584 struct req_format *fmt;
1585 struct ptlrpc_request *req;
1586 struct obd_statfs *msfs;
1587 struct obd_import *imp = NULL;
1592 * Since the request might also come from lprocfs, so we need
1593 * sync this with client_disconnect_export Bug15684
1595 down_read(&obd->u.cli.cl_sem);
1596 if (obd->u.cli.cl_import)
1597 imp = class_import_get(obd->u.cli.cl_import);
1598 up_read(&obd->u.cli.cl_sem);
1602 fmt = &RQF_MDS_STATFS;
1603 if ((exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS) &&
1604 (flags & OBD_STATFS_SUM))
1605 fmt = &RQF_MDS_STATFS_NEW;
1606 req = ptlrpc_request_alloc_pack(imp, fmt, LUSTRE_MDS_VERSION,
1609 GOTO(output, rc = -ENOMEM);
1611 if ((flags & OBD_STATFS_SUM) &&
1612 (exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS)) {
1613 /* request aggregated states */
1614 struct mdt_body *body;
1616 body = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
1618 GOTO(out, rc = -EPROTO);
1619 body->mbo_valid = OBD_MD_FLAGSTATFS;
1622 ptlrpc_request_set_replen(req);
1624 if (flags & OBD_STATFS_NODELAY) {
1625 /* procfs requests not want stay in wait for avoid deadlock */
1626 req->rq_no_resend = 1;
1627 req->rq_no_delay = 1;
1630 rc = ptlrpc_queue_wait(req);
1632 /* check connection error first */
1633 if (imp->imp_connect_error)
1634 rc = imp->imp_connect_error;
1638 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1640 GOTO(out, rc = -EPROTO);
1645 ptlrpc_req_finished(req);
1647 class_import_put(imp);
1651 static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
1653 __u32 keylen, vallen;
1657 if (gf->gf_pathlen > PATH_MAX)
1658 RETURN(-ENAMETOOLONG);
1659 if (gf->gf_pathlen < 2)
1662 /* Key is KEY_FID2PATH + getinfo_fid2path description */
1663 keylen = cfs_size_round(sizeof(KEY_FID2PATH) + sizeof(*gf) +
1664 sizeof(struct lu_fid));
1665 OBD_ALLOC(key, keylen);
1668 memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
1669 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
1670 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf),
1671 gf->gf_u.gf_root_fid, sizeof(struct lu_fid));
1672 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
1673 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
1675 if (!fid_is_sane(&gf->gf_fid))
1676 GOTO(out, rc = -EINVAL);
1678 /* Val is struct getinfo_fid2path result plus path */
1679 vallen = sizeof(*gf) + gf->gf_pathlen;
1681 rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf);
1682 if (rc != 0 && rc != -EREMOTE)
1685 if (vallen <= sizeof(*gf))
1686 GOTO(out, rc = -EPROTO);
1687 if (vallen > sizeof(*gf) + gf->gf_pathlen)
1688 GOTO(out, rc = -EOVERFLOW);
1690 CDEBUG(D_IOCTL, "path got "DFID" from %llu #%d: %s\n",
1691 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno,
1692 gf->gf_pathlen < 512 ? gf->gf_u.gf_path :
1693 /* only log the last 512 characters of the path */
1694 gf->gf_u.gf_path + gf->gf_pathlen - 512);
1697 OBD_FREE(key, keylen);
1701 static int mdc_ioc_hsm_progress(struct obd_export *exp,
1702 struct hsm_progress_kernel *hpk)
1704 struct obd_import *imp = class_exp2cliimp(exp);
1705 struct hsm_progress_kernel *req_hpk;
1706 struct ptlrpc_request *req;
1710 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS,
1711 LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS);
1713 GOTO(out, rc = -ENOMEM);
1715 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1717 /* Copy hsm_progress struct */
1718 req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS);
1719 if (req_hpk == NULL)
1720 GOTO(out, rc = -EPROTO);
1723 req_hpk->hpk_errval = lustre_errno_hton(hpk->hpk_errval);
1725 ptlrpc_request_set_replen(req);
1727 ptlrpc_get_mod_rpc_slot(req);
1728 rc = ptlrpc_queue_wait(req);
1729 ptlrpc_put_mod_rpc_slot(req);
1733 ptlrpc_req_finished(req);
1737 * Send hsm_ct_register to MDS
1739 * \param[in] imp import
1740 * \param[in] archive_count if in bitmap format, it is the bitmap,
1741 * else it is the count of archive_ids
1742 * \param[in] archives if in bitmap format, it is NULL,
1743 * else it is archive_id lists
1745 static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archive_count,
1748 struct ptlrpc_request *req;
1749 __u32 *archive_array;
1750 size_t archives_size;
1754 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_CT_REGISTER);
1758 if (archives != NULL)
1759 archives_size = sizeof(*archive_array) * archive_count;
1761 archives_size = sizeof(archive_count);
1763 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_ARCHIVE,
1764 RCL_CLIENT, archives_size);
1766 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_CT_REGISTER);
1768 ptlrpc_request_free(req);
1772 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1774 archive_array = req_capsule_client_get(&req->rq_pill,
1775 &RMF_MDS_HSM_ARCHIVE);
1776 if (archive_array == NULL)
1777 GOTO(out, rc = -EPROTO);
1779 if (archives != NULL)
1780 memcpy(archive_array, archives, archives_size);
1782 *archive_array = archive_count;
1784 ptlrpc_request_set_replen(req);
1785 req->rq_no_resend = 1;
1787 rc = mdc_queue_wait(req);
1790 ptlrpc_req_finished(req);
1794 static int mdc_ioc_hsm_current_action(struct obd_export *exp,
1795 struct md_op_data *op_data)
1797 struct hsm_current_action *hca = op_data->op_data;
1798 struct hsm_current_action *req_hca;
1799 struct ptlrpc_request *req;
1803 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1804 &RQF_MDS_HSM_ACTION);
1808 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION);
1810 ptlrpc_request_free(req);
1814 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1815 op_data->op_suppgids[0], 0);
1817 ptlrpc_request_set_replen(req);
1819 rc = mdc_queue_wait(req);
1823 req_hca = req_capsule_server_get(&req->rq_pill,
1824 &RMF_MDS_HSM_CURRENT_ACTION);
1825 if (req_hca == NULL)
1826 GOTO(out, rc = -EPROTO);
1832 ptlrpc_req_finished(req);
1836 static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp)
1838 struct ptlrpc_request *req;
1842 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER,
1844 MDS_HSM_CT_UNREGISTER);
1846 GOTO(out, rc = -ENOMEM);
1848 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1850 ptlrpc_request_set_replen(req);
1852 rc = mdc_queue_wait(req);
1855 ptlrpc_req_finished(req);
1859 static int mdc_ioc_hsm_state_get(struct obd_export *exp,
1860 struct md_op_data *op_data)
1862 struct hsm_user_state *hus = op_data->op_data;
1863 struct hsm_user_state *req_hus;
1864 struct ptlrpc_request *req;
1868 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1869 &RQF_MDS_HSM_STATE_GET);
1873 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET);
1875 ptlrpc_request_free(req);
1879 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1880 op_data->op_suppgids[0], 0);
1882 ptlrpc_request_set_replen(req);
1884 rc = mdc_queue_wait(req);
1888 req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE);
1889 if (req_hus == NULL)
1890 GOTO(out, rc = -EPROTO);
1896 ptlrpc_req_finished(req);
1900 static int mdc_ioc_hsm_state_set(struct obd_export *exp,
1901 struct md_op_data *op_data)
1903 struct hsm_state_set *hss = op_data->op_data;
1904 struct hsm_state_set *req_hss;
1905 struct ptlrpc_request *req;
1909 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1910 &RQF_MDS_HSM_STATE_SET);
1914 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET);
1916 ptlrpc_request_free(req);
1920 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1921 op_data->op_suppgids[0], 0);
1924 req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET);
1925 if (req_hss == NULL)
1926 GOTO(out, rc = -EPROTO);
1929 ptlrpc_request_set_replen(req);
1931 ptlrpc_get_mod_rpc_slot(req);
1932 rc = ptlrpc_queue_wait(req);
1933 ptlrpc_put_mod_rpc_slot(req);
1937 ptlrpc_req_finished(req);
1941 static int mdc_ioc_hsm_request(struct obd_export *exp,
1942 struct hsm_user_request *hur)
1944 struct obd_import *imp = class_exp2cliimp(exp);
1945 struct ptlrpc_request *req;
1946 struct hsm_request *req_hr;
1947 struct hsm_user_item *req_hui;
1952 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST);
1954 GOTO(out, rc = -ENOMEM);
1956 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT,
1957 hur->hur_request.hr_itemcount
1958 * sizeof(struct hsm_user_item));
1959 req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT,
1960 hur->hur_request.hr_data_len);
1962 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST);
1964 ptlrpc_request_free(req);
1968 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1970 /* Copy hsm_request struct */
1971 req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST);
1973 GOTO(out, rc = -EPROTO);
1974 *req_hr = hur->hur_request;
1976 /* Copy hsm_user_item structs */
1977 req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM);
1978 if (req_hui == NULL)
1979 GOTO(out, rc = -EPROTO);
1980 memcpy(req_hui, hur->hur_user_item,
1981 hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item));
1983 /* Copy opaque field */
1984 req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA);
1985 if (req_opaque == NULL)
1986 GOTO(out, rc = -EPROTO);
1987 memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len);
1989 ptlrpc_request_set_replen(req);
1991 ptlrpc_get_mod_rpc_slot(req);
1992 rc = ptlrpc_queue_wait(req);
1993 ptlrpc_put_mod_rpc_slot(req);
1998 ptlrpc_req_finished(req);
2002 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2003 struct lustre_kernelcomm *lk);
2005 static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp,
2006 struct obd_quotactl *oqctl)
2008 struct ptlrpc_request *req;
2009 struct obd_quotactl *oqc;
2013 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_QUOTACTL);
2018 if (LUSTRE_Q_CMD_IS_POOL(oqctl->qc_cmd))
2019 req_capsule_set_size(&req->rq_pill,
2022 sizeof(*oqc) + LOV_MAXPOOLNAME + 1);
2024 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION,
2027 ptlrpc_request_free(req);
2031 oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
2032 QCTL_COPY(oqc, oqctl);
2034 ptlrpc_request_set_replen(req);
2035 ptlrpc_at_set_req_timeout(req);
2037 rc = ptlrpc_queue_wait(req);
2039 CERROR("%s: ptlrpc_queue_wait failed: rc = %d\n",
2040 exp->exp_obd->obd_name, rc);
2044 if (req->rq_repmsg &&
2045 (oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL))) {
2046 QCTL_COPY(oqctl, oqc);
2049 CERROR("%s: cannot unpack obd_quotactl: rc = %d\n",
2050 exp->exp_obd->obd_name, rc);
2053 ptlrpc_req_finished(req);
2058 static int mdc_ioc_swap_layouts(struct obd_export *exp,
2059 struct md_op_data *op_data)
2062 struct ptlrpc_request *req;
2064 struct mdc_swap_layouts *msl, *payload;
2067 msl = op_data->op_data;
2069 /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the
2070 * first thing it will do is to cancel the 2 layout
2071 * locks held by this client.
2072 * So the client must cancel its layout locks on the 2 fids
2073 * with the request RPC to avoid extra RPC round trips.
2075 count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels,
2076 LCK_EX, MDS_INODELOCK_LAYOUT |
2077 MDS_INODELOCK_XATTR);
2078 count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels,
2079 LCK_EX, MDS_INODELOCK_LAYOUT |
2080 MDS_INODELOCK_XATTR);
2082 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2083 &RQF_MDS_SWAP_LAYOUTS);
2085 ldlm_lock_list_put(&cancels, l_bl_ast, count);
2089 rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count);
2091 ptlrpc_request_free(req);
2095 mdc_swap_layouts_pack(req, op_data);
2097 payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS);
2102 ptlrpc_request_set_replen(req);
2104 rc = ptlrpc_queue_wait(req);
2110 ptlrpc_req_finished(req);
2114 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2115 void *karg, void __user *uarg)
2117 struct obd_device *obd = exp->exp_obd;
2118 struct obd_ioctl_data *data = karg;
2119 struct obd_import *imp = obd->u.cli.cl_import;
2123 if (!try_module_get(THIS_MODULE)) {
2124 CERROR("%s: cannot get module '%s'\n", obd->obd_name,
2125 module_name(THIS_MODULE));
2129 case OBD_IOC_FID2PATH:
2130 rc = mdc_ioc_fid2path(exp, karg);
2132 case LL_IOC_HSM_CT_START:
2133 rc = mdc_ioc_hsm_ct_start(exp, karg);
2134 /* ignore if it was already registered on this MDS. */
2138 case LL_IOC_HSM_PROGRESS:
2139 rc = mdc_ioc_hsm_progress(exp, karg);
2141 case LL_IOC_HSM_STATE_GET:
2142 rc = mdc_ioc_hsm_state_get(exp, karg);
2144 case LL_IOC_HSM_STATE_SET:
2145 rc = mdc_ioc_hsm_state_set(exp, karg);
2147 case LL_IOC_HSM_ACTION:
2148 rc = mdc_ioc_hsm_current_action(exp, karg);
2150 case LL_IOC_HSM_REQUEST:
2151 rc = mdc_ioc_hsm_request(exp, karg);
2153 case OBD_IOC_CLIENT_RECOVER:
2154 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0);
2158 case IOC_OSC_SET_ACTIVE:
2159 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
2162 * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by
2163 * LMV instead of MDC. But when the cluster is upgraded from 1.8,
2164 * there'd be no LMV layer thus we might be called here. Eventually
2165 * this code should be removed.
2168 case IOC_OBD_STATFS: {
2169 struct obd_statfs stat_buf = {0};
2171 if (*((__u32 *) data->ioc_inlbuf2) != 0)
2172 GOTO(out, rc = -ENODEV);
2175 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
2176 min((int)data->ioc_plen2,
2177 (int)sizeof(struct obd_uuid))))
2178 GOTO(out, rc = -EFAULT);
2180 rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf,
2181 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
2186 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
2187 min((int) data->ioc_plen1,
2188 (int) sizeof(stat_buf))))
2189 GOTO(out, rc = -EFAULT);
2193 case OBD_IOC_QUOTACTL: {
2194 struct if_quotactl *qctl = karg;
2195 struct obd_quotactl *oqctl;
2197 OBD_ALLOC_PTR(oqctl);
2199 GOTO(out, rc = -ENOMEM);
2201 QCTL_COPY(oqctl, qctl);
2202 rc = obd_quotactl(exp, oqctl);
2204 QCTL_COPY(qctl, oqctl);
2205 qctl->qc_valid = QC_MDTIDX;
2206 qctl->obd_uuid = obd->u.cli.cl_target_uuid;
2209 OBD_FREE_PTR(oqctl);
2212 case LL_IOC_GET_CONNECT_FLAGS:
2213 if (copy_to_user(uarg, exp_connect_flags_ptr(exp),
2214 sizeof(*exp_connect_flags_ptr(exp))))
2215 GOTO(out, rc = -EFAULT);
2218 case LL_IOC_LOV_SWAP_LAYOUTS:
2219 rc = mdc_ioc_swap_layouts(exp, karg);
2222 CERROR("unrecognised ioctl: cmd = %#x\n", cmd);
2223 GOTO(out, rc = -ENOTTY);
2226 module_put(THIS_MODULE);
2231 static int mdc_get_info_rpc(struct obd_export *exp,
2232 u32 keylen, void *key,
2233 u32 vallen, void *val)
2235 struct obd_import *imp = class_exp2cliimp(exp);
2236 struct ptlrpc_request *req;
2241 req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
2245 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
2246 RCL_CLIENT, keylen);
2247 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
2248 RCL_CLIENT, sizeof(vallen));
2250 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
2252 ptlrpc_request_free(req);
2256 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
2257 memcpy(tmp, key, keylen);
2258 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
2259 memcpy(tmp, &vallen, sizeof(vallen));
2261 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
2262 RCL_SERVER, vallen);
2263 ptlrpc_request_set_replen(req);
2265 rc = ptlrpc_queue_wait(req);
2266 /* -EREMOTE means the get_info result is partial, and it needs to
2267 * continue on another MDT, see fid2path part in lmv_iocontrol */
2268 if (rc == 0 || rc == -EREMOTE) {
2269 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
2270 memcpy(val, tmp, vallen);
2271 if (ptlrpc_rep_need_swab(req)) {
2272 if (KEY_IS(KEY_FID2PATH))
2273 lustre_swab_fid2path(val);
2276 ptlrpc_req_finished(req);
2281 static void lustre_swab_hai(struct hsm_action_item *h)
2283 __swab32s(&h->hai_len);
2284 __swab32s(&h->hai_action);
2285 lustre_swab_lu_fid(&h->hai_fid);
2286 lustre_swab_lu_fid(&h->hai_dfid);
2287 __swab64s(&h->hai_cookie);
2288 __swab64s(&h->hai_extent.offset);
2289 __swab64s(&h->hai_extent.length);
2290 __swab64s(&h->hai_gid);
2293 static void lustre_swab_hal(struct hsm_action_list *h)
2295 struct hsm_action_item *hai;
2298 __swab32s(&h->hal_version);
2299 __swab32s(&h->hal_count);
2300 __swab32s(&h->hal_archive_id);
2301 __swab64s(&h->hal_flags);
2303 for (i = 0; i < h->hal_count; i++, hai = hai_next(hai))
2304 lustre_swab_hai(hai);
2307 static void lustre_swab_kuch(struct kuc_hdr *l)
2309 __swab16s(&l->kuc_magic);
2310 /* __u8 l->kuc_transport */
2311 __swab16s(&l->kuc_msgtype);
2312 __swab16s(&l->kuc_msglen);
2315 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2316 struct lustre_kernelcomm *lk)
2318 struct obd_import *imp = class_exp2cliimp(exp);
2321 if (lk->lk_group != KUC_GRP_HSM) {
2322 CERROR("Bad copytool group %d\n", lk->lk_group);
2326 CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd,
2327 lk->lk_uid, lk->lk_group, lk->lk_flags);
2329 if (lk->lk_flags & LK_FLG_STOP) {
2330 /* Unregister with the coordinator */
2331 rc = mdc_ioc_hsm_ct_unregister(imp);
2333 __u32 *archives = NULL;
2335 if ((lk->lk_flags & LK_FLG_DATANR) && lk->lk_data_count > 0)
2336 archives = lk->lk_data;
2338 rc = mdc_ioc_hsm_ct_register(imp, lk->lk_data_count, archives);
2345 * Send a message to any listening copytools
2346 * @param val KUC message (kuc_hdr + hsm_action_list)
2347 * @param len total length of message
2349 static int mdc_hsm_copytool_send(const struct obd_uuid *uuid,
2350 size_t len, void *val)
2352 struct kuc_hdr *lh = (struct kuc_hdr *)val;
2353 struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1);
2357 if (len < sizeof(*lh) + sizeof(*hal)) {
2358 CERROR("Short HSM message %zu < %zu\n", len,
2359 sizeof(*lh) + sizeof(*hal));
2362 if (lh->kuc_magic == __swab16(KUC_MAGIC)) {
2363 lustre_swab_kuch(lh);
2364 lustre_swab_hal(hal);
2365 } else if (lh->kuc_magic != KUC_MAGIC) {
2366 CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC);
2370 CDEBUG(D_HSM, " Received message mg=%x t=%d m=%d l=%d actions=%d "
2372 lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype,
2373 lh->kuc_msglen, hal->hal_count, hal->hal_fsname);
2375 /* Broadcast to HSM listeners */
2376 rc = libcfs_kkuc_group_put(uuid, KUC_GRP_HSM, lh);
2382 * callback function passed to kuc for re-registering each HSM copytool
2383 * running on MDC, after MDT shutdown/recovery.
2384 * @param data copytool registration data
2385 * @param cb_arg callback argument (obd_import)
2387 static int mdc_hsm_ct_reregister(void *data, void *cb_arg)
2389 struct obd_import *imp = (struct obd_import *)cb_arg;
2390 struct kkuc_ct_data *kcd = data;
2391 __u32 *archives = NULL;
2395 (kcd->kcd_magic != KKUC_CT_DATA_ARRAY_MAGIC &&
2396 kcd->kcd_magic != KKUC_CT_DATA_BITMAP_MAGIC))
2399 if (kcd->kcd_magic == KKUC_CT_DATA_BITMAP_MAGIC) {
2400 CDEBUG(D_HA, "%s: recover copytool registration to MDT "
2401 "(archive=%#x)\n", imp->imp_obd->obd_name,
2402 kcd->kcd_nr_archives);
2404 CDEBUG(D_HA, "%s: recover copytool registration to MDT "
2405 "(archive nr = %u)\n",
2406 imp->imp_obd->obd_name, kcd->kcd_nr_archives);
2407 if (kcd->kcd_nr_archives != 0)
2408 archives = kcd->kcd_archives;
2411 rc = mdc_ioc_hsm_ct_register(imp, kcd->kcd_nr_archives, archives);
2412 /* ignore error if the copytool is already registered */
2413 return (rc == -EEXIST) ? 0 : rc;
2417 * Re-establish all kuc contexts with MDT
2418 * after MDT shutdown/recovery.
2420 static int mdc_kuc_reregister(struct obd_import *imp)
2422 /* re-register HSM agents */
2423 return libcfs_kkuc_group_foreach(&imp->imp_obd->obd_uuid, KUC_GRP_HSM,
2424 mdc_hsm_ct_reregister, imp);
2427 static int mdc_set_info_async(const struct lu_env *env,
2428 struct obd_export *exp,
2429 u32 keylen, void *key,
2430 u32 vallen, void *val,
2431 struct ptlrpc_request_set *set)
2433 struct obd_import *imp = class_exp2cliimp(exp);
2437 if (KEY_IS(KEY_READ_ONLY)) {
2438 if (vallen != sizeof(int))
2441 spin_lock(&imp->imp_lock);
2442 if (*((int *)val)) {
2443 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
2444 imp->imp_connect_data.ocd_connect_flags |=
2447 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
2448 imp->imp_connect_data.ocd_connect_flags &=
2449 ~OBD_CONNECT_RDONLY;
2451 spin_unlock(&imp->imp_lock);
2453 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2454 keylen, key, vallen, val, set);
2457 if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2458 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2459 keylen, key, vallen, val, set);
2462 if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) {
2463 rc = mdc_hsm_copytool_send(&imp->imp_obd->obd_uuid, vallen,
2468 if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2469 __u32 *default_easize = val;
2471 exp->exp_obd->u.cli.cl_default_mds_easize = *default_easize;
2475 rc = osc_set_info_async(env, exp, keylen, key, vallen, val, set);
2479 static int mdc_get_info(const struct lu_env *env, struct obd_export *exp,
2480 __u32 keylen, void *key, __u32 *vallen, void *val)
2484 if (KEY_IS(KEY_MAX_EASIZE)) {
2485 __u32 mdsize, *max_easize;
2487 if (*vallen != sizeof(int))
2489 mdsize = *(__u32 *)val;
2490 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
2491 exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
2493 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
2495 } else if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2496 __u32 *default_easize;
2498 if (*vallen != sizeof(int))
2500 default_easize = val;
2501 *default_easize = exp->exp_obd->u.cli.cl_default_mds_easize;
2503 } else if (KEY_IS(KEY_CONN_DATA)) {
2504 struct obd_import *imp = class_exp2cliimp(exp);
2505 struct obd_connect_data *data = val;
2507 if (*vallen != sizeof(*data))
2510 *data = imp->imp_connect_data;
2512 } else if (KEY_IS(KEY_TGT_COUNT)) {
2513 *((__u32 *)val) = 1;
2517 rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
2522 static int mdc_fsync(struct obd_export *exp, const struct lu_fid *fid,
2523 struct ptlrpc_request **request)
2525 struct ptlrpc_request *req;
2530 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
2534 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
2536 ptlrpc_request_free(req);
2540 mdc_pack_body(req, fid, 0, 0, -1, 0);
2542 ptlrpc_request_set_replen(req);
2544 rc = ptlrpc_queue_wait(req);
2546 ptlrpc_req_finished(req);
2552 struct mdc_rmfid_args {
2557 int mdc_rmfid_interpret(const struct lu_env *env, struct ptlrpc_request *req,
2560 struct mdc_rmfid_args *aa;
2565 aa = ptlrpc_req_async_args(aa, req);
2567 size = req_capsule_get_size(&req->rq_pill, &RMF_RCS,
2569 LASSERT(size == sizeof(int) * aa->mra_nr);
2570 rcs = req_capsule_server_get(&req->rq_pill, &RMF_RCS);
2572 LASSERT(aa->mra_rcs);
2573 LASSERT(aa->mra_nr);
2574 memcpy(aa->mra_rcs, rcs, size);
2580 static int mdc_rmfid(struct obd_export *exp, struct fid_array *fa,
2581 int *rcs, struct ptlrpc_request_set *set)
2583 struct ptlrpc_request *req;
2584 struct mdc_rmfid_args *aa;
2590 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_RMFID);
2594 flen = fa->fa_nr * sizeof(struct lu_fid);
2595 req_capsule_set_size(&req->rq_pill, &RMF_FID_ARRAY,
2597 req_capsule_set_size(&req->rq_pill, &RMF_FID_ARRAY,
2599 req_capsule_set_size(&req->rq_pill, &RMF_RCS,
2600 RCL_SERVER, fa->fa_nr * sizeof(__u32));
2601 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_RMFID);
2603 ptlrpc_request_free(req);
2606 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FID_ARRAY);
2607 memcpy(tmp, fa->fa_fids, flen);
2609 mdc_pack_body(req, NULL, 0, 0, -1, 0);
2610 b = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
2611 b->mbo_ctime = ktime_get_real_seconds();
2613 ptlrpc_request_set_replen(req);
2616 aa = ptlrpc_req_async_args(aa, req);
2618 aa->mra_nr = fa->fa_nr;
2619 req->rq_interpret_reply = mdc_rmfid_interpret;
2621 ptlrpc_set_add_req(set, req);
2622 ptlrpc_check_set(NULL, set);
2627 static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
2628 enum obd_import_event event)
2630 struct client_obd *cli = &obd->u.cli;
2633 LASSERT(imp->imp_obd == obd);
2636 case IMP_EVENT_DISCON:
2637 spin_lock(&cli->cl_loi_list_lock);
2638 cli->cl_avail_grant = 0;
2639 cli->cl_lost_grant = 0;
2640 spin_unlock(&cli->cl_loi_list_lock);
2642 case IMP_EVENT_INACTIVE:
2644 * Flush current sequence to make client obtain new one
2645 * from server in case of disconnect/reconnect.
2647 down_read(&cli->cl_seq_rwsem);
2649 seq_client_flush(cli->cl_seq);
2650 up_read(&cli->cl_seq_rwsem);
2652 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE);
2654 case IMP_EVENT_INVALIDATE: {
2655 struct ldlm_namespace *ns = obd->obd_namespace;
2659 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2661 env = cl_env_get(&refcheck);
2663 /* Reset grants. All pages go to failing rpcs due to
2664 * the invalid import.
2666 osc_io_unplug(env, cli, NULL);
2668 cfs_hash_for_each_nolock(ns->ns_rs_hash,
2669 osc_ldlm_resource_invalidate,
2671 cl_env_put(env, &refcheck);
2672 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2678 case IMP_EVENT_ACTIVE:
2679 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE);
2680 /* redo the kuc registration after reconnecting */
2682 rc = mdc_kuc_reregister(imp);
2684 case IMP_EVENT_OCD: {
2685 struct obd_connect_data *ocd = &imp->imp_connect_data;
2687 if (OCD_HAS_FLAG(ocd, GRANT))
2688 osc_init_grant(cli, ocd);
2690 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD);
2693 case IMP_EVENT_DEACTIVATE:
2694 case IMP_EVENT_ACTIVATE:
2697 CERROR("Unknown import event %x\n", event);
2703 int mdc_fid_alloc(const struct lu_env *env, struct obd_export *exp,
2704 struct lu_fid *fid, struct md_op_data *op_data)
2706 struct client_obd *cli = &exp->exp_obd->u.cli;
2711 down_read(&cli->cl_seq_rwsem);
2713 rc = seq_client_alloc_fid(env, cli->cl_seq, fid);
2714 up_read(&cli->cl_seq_rwsem);
2719 static struct obd_uuid *mdc_get_uuid(struct obd_export *exp)
2721 struct client_obd *cli = &exp->exp_obd->u.cli;
2722 return &cli->cl_target_uuid;
2726 * Determine whether the lock can be canceled before replaying it during
2727 * recovery, non zero value will be return if the lock can be canceled,
2728 * or zero returned for not
2730 static int mdc_cancel_weight(struct ldlm_lock *lock)
2732 if (lock->l_resource->lr_type != LDLM_IBITS)
2735 /* FIXME: if we ever get into a situation where there are too many
2736 * opened files with open locks on a single node, then we really
2737 * should replay these open locks to reget it */
2738 if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN)
2741 /* Special case for DoM locks, cancel only unused and granted locks */
2742 if (ldlm_has_dom(lock) &&
2743 (lock->l_granted_mode != lock->l_req_mode ||
2744 osc_ldlm_weigh_ast(lock) != 0))
2750 static int mdc_resource_inode_free(struct ldlm_resource *res)
2752 if (res->lr_lvb_inode)
2753 res->lr_lvb_inode = NULL;
2758 static struct ldlm_valblock_ops inode_lvbo = {
2759 .lvbo_free = mdc_resource_inode_free
2762 static int mdc_llog_init(struct obd_device *obd)
2764 struct obd_llog_group *olg = &obd->obd_olg;
2765 struct llog_ctxt *ctxt;
2770 rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, obd,
2775 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
2776 llog_initiator_connect(ctxt);
2777 llog_ctxt_put(ctxt);
2782 static void mdc_llog_finish(struct obd_device *obd)
2784 struct llog_ctxt *ctxt;
2788 ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
2790 llog_cleanup(NULL, ctxt);
2795 int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
2801 rc = osc_setup_common(obd, cfg);
2805 rc = mdc_tunables_init(obd);
2807 GOTO(err_osc_cleanup, rc);
2809 obd->u.cli.cl_dom_min_inline_repsize = MDC_DOM_DEF_INLINE_REPSIZE;
2811 ns_register_cancel(obd->obd_namespace, mdc_cancel_weight);
2813 obd->obd_namespace->ns_lvbo = &inode_lvbo;
2815 rc = mdc_llog_init(obd);
2817 CERROR("%s: failed to setup llogging subsystems: rc = %d\n",
2819 GOTO(err_llog_cleanup, rc);
2822 rc = mdc_changelog_cdev_init(obd);
2824 CERROR("%s: failed to setup changelog char device: rc = %d\n",
2826 GOTO(err_changelog_cleanup, rc);
2831 err_changelog_cleanup:
2832 mdc_llog_finish(obd);
2834 lprocfs_free_md_stats(obd);
2835 ptlrpc_lprocfs_unregister_obd(obd);
2837 osc_cleanup_common(obd);
2841 /* Initialize the default and maximum LOV EA sizes. This allows
2842 * us to make MDS RPCs with large enough reply buffers to hold a default
2843 * sized EA without having to calculate this (via a call into the
2844 * LOV + OSCs) each time we make an RPC. The maximum size is also tracked
2845 * but not used to avoid wastefully vmalloc()'ing large reply buffers when
2846 * a large number of stripes is possible. If a larger reply buffer is
2847 * required it will be reallocated in the ptlrpc layer due to overflow.
2849 static int mdc_init_ea_size(struct obd_export *exp, __u32 easize,
2852 struct obd_device *obd = exp->exp_obd;
2853 struct client_obd *cli = &obd->u.cli;
2856 if (cli->cl_max_mds_easize < easize)
2857 cli->cl_max_mds_easize = easize;
2859 if (cli->cl_default_mds_easize < def_easize)
2860 cli->cl_default_mds_easize = def_easize;
2865 static int mdc_precleanup(struct obd_device *obd)
2869 osc_precleanup_common(obd);
2870 mdc_changelog_cdev_finish(obd);
2872 obd_cleanup_client_import(obd);
2873 ptlrpc_lprocfs_unregister_obd(obd);
2874 lprocfs_free_md_stats(obd);
2875 mdc_llog_finish(obd);
2879 static int mdc_cleanup(struct obd_device *obd)
2881 return osc_cleanup_common(obd);
2884 static const struct obd_ops mdc_obd_ops = {
2885 .o_owner = THIS_MODULE,
2886 .o_setup = mdc_setup,
2887 .o_precleanup = mdc_precleanup,
2888 .o_cleanup = mdc_cleanup,
2889 .o_add_conn = client_import_add_conn,
2890 .o_del_conn = client_import_del_conn,
2891 .o_connect = client_connect_import,
2892 .o_reconnect = osc_reconnect,
2893 .o_disconnect = osc_disconnect,
2894 .o_iocontrol = mdc_iocontrol,
2895 .o_set_info_async = mdc_set_info_async,
2896 .o_statfs = mdc_statfs,
2897 .o_statfs_async = mdc_statfs_async,
2898 .o_fid_init = client_fid_init,
2899 .o_fid_fini = client_fid_fini,
2900 .o_fid_alloc = mdc_fid_alloc,
2901 .o_import_event = mdc_import_event,
2902 .o_get_info = mdc_get_info,
2903 .o_get_uuid = mdc_get_uuid,
2904 .o_quotactl = mdc_quotactl,
2907 static const struct md_ops mdc_md_ops = {
2908 .m_get_root = mdc_get_root,
2909 .m_null_inode = mdc_null_inode,
2910 .m_close = mdc_close,
2911 .m_create = mdc_create,
2912 .m_enqueue = mdc_enqueue,
2913 .m_getattr = mdc_getattr,
2914 .m_getattr_name = mdc_getattr_name,
2915 .m_intent_lock = mdc_intent_lock,
2917 .m_rename = mdc_rename,
2918 .m_setattr = mdc_setattr,
2919 .m_setxattr = mdc_setxattr,
2920 .m_getxattr = mdc_getxattr,
2921 .m_fsync = mdc_fsync,
2922 .m_file_resync = mdc_file_resync,
2923 .m_read_page = mdc_read_page,
2924 .m_unlink = mdc_unlink,
2925 .m_cancel_unused = mdc_cancel_unused,
2926 .m_init_ea_size = mdc_init_ea_size,
2927 .m_set_lock_data = mdc_set_lock_data,
2928 .m_lock_match = mdc_lock_match,
2929 .m_get_lustre_md = mdc_get_lustre_md,
2930 .m_free_lustre_md = mdc_free_lustre_md,
2931 .m_set_open_replay_data = mdc_set_open_replay_data,
2932 .m_clear_open_replay_data = mdc_clear_open_replay_data,
2933 .m_intent_getattr_async = mdc_intent_getattr_async,
2934 .m_revalidate_lock = mdc_revalidate_lock,
2935 .m_rmfid = mdc_rmfid,
2938 dev_t mdc_changelog_dev;
2939 struct class *mdc_changelog_class;
2940 static int __init mdc_init(void)
2943 rc = alloc_chrdev_region(&mdc_changelog_dev, 0,
2944 MDC_CHANGELOG_DEV_COUNT,
2945 MDC_CHANGELOG_DEV_NAME);
2949 mdc_changelog_class = class_create(THIS_MODULE, MDC_CHANGELOG_DEV_NAME);
2950 if (IS_ERR(mdc_changelog_class)) {
2951 rc = PTR_ERR(mdc_changelog_class);
2955 rc = class_register_type(&mdc_obd_ops, &mdc_md_ops, true,
2956 LUSTRE_MDC_NAME, &mdc_device_type);
2963 class_destroy(mdc_changelog_class);
2965 unregister_chrdev_region(mdc_changelog_dev, MDC_CHANGELOG_DEV_COUNT);
2969 static void __exit mdc_exit(void)
2971 class_unregister_type(LUSTRE_MDC_NAME);
2972 class_destroy(mdc_changelog_class);
2973 unregister_chrdev_region(mdc_changelog_dev, MDC_CHANGELOG_DEV_COUNT);
2974 idr_destroy(&mdc_changelog_minor_idr);
2977 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
2978 MODULE_DESCRIPTION("Lustre Metadata Client");
2979 MODULE_VERSION(LUSTRE_VERSION_STRING);
2980 MODULE_LICENSE("GPL");
2982 module_init(mdc_init);
2983 module_exit(mdc_exit);