1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mgs/mgs_handler.c
38 * Author: Nathan Rutman <nathan@clusterfs.com>
42 # define EXPORT_SYMTAB
44 #define DEBUG_SUBSYSTEM S_MGS
45 #define D_MGS D_CONFIG
48 # include <linux/module.h>
49 # include <linux/pagemap.h>
50 # include <linux/miscdevice.h>
51 # include <linux/init.h>
53 # include <liblustre.h>
56 #include <obd_class.h>
57 #include <lustre_dlm.h>
58 #include <lprocfs_status.h>
59 #include <lustre_fsfilt.h>
60 #include <lustre_disk.h>
61 #include "mgs_internal.h"
62 #include <lustre_param.h>
64 /* Establish a connection to the MGS.*/
65 static int mgs_connect(const struct lu_env *env,
66 struct obd_export **exp, struct obd_device *obd,
67 struct obd_uuid *cluuid, struct obd_connect_data *data,
70 struct obd_export *lexp;
71 struct lustre_handle conn = { 0 };
75 if (!exp || !obd || !cluuid)
78 rc = class_connect(&conn, obd, cluuid);
82 lexp = class_conn2export(&conn);
85 mgs_counter_incr(lexp, LPROC_MGS_CONNECT);
88 data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED;
89 lexp->exp_connect_flags = data->ocd_connect_flags;
90 data->ocd_version = LUSTRE_VERSION_CODE;
93 rc = mgs_export_stats_init(obd, lexp, 0, localdata);
96 class_disconnect(lexp);
104 static int mgs_reconnect(const struct lu_env *env,
105 struct obd_export *exp, struct obd_device *obd,
106 struct obd_uuid *cluuid, struct obd_connect_data *data,
111 if (exp == NULL || obd == NULL || cluuid == NULL)
114 mgs_counter_incr(exp, LPROC_MGS_CONNECT);
117 data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED;
118 exp->exp_connect_flags = data->ocd_connect_flags;
119 data->ocd_version = LUSTRE_VERSION_CODE;
122 RETURN(mgs_export_stats_init(obd, exp, 1, localdata));
125 static int mgs_disconnect(struct obd_export *exp)
132 class_export_get(exp);
133 mgs_counter_incr(exp, LPROC_MGS_DISCONNECT);
135 rc = server_disconnect_export(exp);
137 class_export_put(exp);
141 static int mgs_cleanup(struct obd_device *obd);
142 static int mgs_handle(struct ptlrpc_request *req);
144 static int mgs_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
145 struct obd_device *tgt, int *index)
150 LASSERT(olg == &obd->obd_olg);
151 rc = llog_setup(obd, olg, LLOG_CONFIG_ORIG_CTXT, obd, 0, NULL,
156 static int mgs_llog_finish(struct obd_device *obd, int count)
158 struct llog_ctxt *ctxt;
162 ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
164 rc = llog_cleanup(ctxt);
169 /* Start the MGS obd */
170 static int mgs_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
172 struct lprocfs_static_vars lvars;
173 struct mgs_obd *mgs = &obd->u.mgs;
174 struct lustre_mount_info *lmi;
175 struct lustre_sb_info *lsi;
176 struct vfsmount *mnt;
180 CDEBUG(D_CONFIG, "Starting MGS\n");
183 lmi = server_get_mount(obd->obd_name);
185 RETURN(rc = -EINVAL);
188 lsi = s2lsi(lmi->lmi_sb);
189 obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
190 if (IS_ERR(obd->obd_fsops))
191 GOTO(err_put, rc = PTR_ERR(obd->obd_fsops));
193 if (lvfs_check_rdonly(lvfs_sbdev(mnt->mnt_sb))) {
194 CERROR("%s: Underlying device is marked as read-only. "
195 "Setup failed\n", obd->obd_name);
196 GOTO(err_ops, rc = -EROFS);
199 /* namespace for mgs llog */
200 obd->obd_namespace = ldlm_namespace_new(obd ,"MGS", LDLM_NAMESPACE_SERVER,
201 LDLM_NAMESPACE_MODEST);
202 if (obd->obd_namespace == NULL)
203 GOTO(err_ops, rc = -ENOMEM);
206 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
207 "mgs_ldlm_client", &obd->obd_ldlm_client);
209 rc = mgs_fs_setup(obd, mnt);
211 CERROR("%s: MGS filesystem method init failed: rc = %d\n",
216 rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
220 /* No recovery for MGC's */
221 obd->obd_replayable = 0;
223 /* Internal mgs setup */
224 mgs_init_fsdb_list(obd);
225 cfs_sema_init(&mgs->mgs_sem, 1);
228 lprocfs_mgs_init_vars(&lvars);
229 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0) {
230 lproc_mgs_setup(obd);
231 rc = lprocfs_alloc_md_stats(obd, LPROC_MGS_LAST);
236 /* Start the service threads */
238 ptlrpc_init_svc(MGS_NBUFS, MGS_BUFSIZE, MGS_MAXREQSIZE,
239 MGS_MAXREPSIZE, MGS_REQUEST_PORTAL,
241 mgs_handle, LUSTRE_MGS_NAME,
242 obd->obd_proc_entry, target_print_req,
243 MGS_THREADS_AUTO_MIN, MGS_THREADS_AUTO_MAX,
244 "ll_mgs", LCT_MD_THREAD, NULL);
246 if (!mgs->mgs_service) {
247 CERROR("failed to start service\n");
248 GOTO(err_llog, rc = -ENOMEM);
251 rc = ptlrpc_start_threads(obd, mgs->mgs_service);
253 GOTO(err_thread, rc);
255 ping_evictor_start();
257 LCONSOLE_INFO("MGS %s started\n", obd->obd_name);
262 ptlrpc_unregister_service(mgs->mgs_service);
264 lproc_mgs_cleanup(obd);
265 obd_llog_finish(obd, 0);
267 /* No extra cleanup needed for llog_init_commit_thread() */
270 ldlm_namespace_free(obd->obd_namespace, NULL, 0);
271 obd->obd_namespace = NULL;
273 fsfilt_put_ops(obd->obd_fsops);
275 server_put_mount(obd->obd_name, mnt);
280 static int mgs_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
286 case OBD_CLEANUP_EARLY:
287 case OBD_CLEANUP_EXPORTS:
288 rc = obd_llog_finish(obd, 0);
295 * Performs cleanup procedures for passed \a obd given it is mgs obd.
297 static int mgs_cleanup(struct obd_device *obd)
299 struct mgs_obd *mgs = &obd->u.mgs;
302 if (mgs->mgs_sb == NULL)
307 ptlrpc_unregister_service(mgs->mgs_service);
309 mgs_cleanup_fsdb_list(obd);
310 lproc_mgs_cleanup(obd);
313 server_put_mount(obd->obd_name, mgs->mgs_vfsmnt);
316 ldlm_namespace_free(obd->obd_namespace, NULL, 1);
317 obd->obd_namespace = NULL;
319 fsfilt_put_ops(obd->obd_fsops);
321 LCONSOLE_INFO("%s has stopped.\n", obd->obd_name);
325 /* similar to filter_prepare_destroy */
326 static int mgs_get_cfg_lock(struct obd_device *obd, char *fsname,
327 struct lustre_handle *lockh)
329 struct ldlm_res_id res_id;
333 rc = mgc_fsname2resid(fsname, &res_id);
335 rc = ldlm_cli_enqueue_local(obd->obd_namespace, &res_id,
336 LDLM_PLAIN, NULL, LCK_EX,
337 &flags, ldlm_blocking_ast,
338 ldlm_completion_ast, NULL,
339 fsname, 0, NULL, lockh);
341 CERROR("can't take cfg lock for %s (%d)\n", fsname, rc);
346 static int mgs_put_cfg_lock(struct lustre_handle *lockh)
349 ldlm_lock_decref(lockh, LCK_EX);
353 void mgs_revoke_lock(struct obd_device *obd, struct fs_db *fsdb)
355 struct lustre_handle lockh;
358 LASSERT(fsdb->fsdb_name[0] != '\0');
360 if (cfs_test_and_set_bit(FSDB_REVOKING_LOCK, &fsdb->fsdb_flags) == 0) {
361 lockrc = mgs_get_cfg_lock(obd, fsdb->fsdb_name, &lockh);
362 /* clear the bit before lock put */
363 cfs_clear_bit(FSDB_REVOKING_LOCK, &fsdb->fsdb_flags);
365 if (lockrc != ELDLM_OK)
366 CERROR("lock error %d for fs %s\n",
367 lockrc, fsdb->fsdb_name);
369 mgs_put_cfg_lock(&lockh);
376 static int mgs_check_target(struct obd_device *obd, struct mgs_target_info *mti)
381 rc = mgs_check_index(obd, mti);
383 LCONSOLE_ERROR_MSG(0x13b, "%s claims to have registered, but "
384 "this MGS does not know about it, preventing "
385 "registration.\n", mti->mti_svname);
387 } else if (rc == -1) {
388 LCONSOLE_ERROR_MSG(0x13c, "Client log %s-client has "
389 "disappeared! Regenerating all logs.\n",
391 mti->mti_flags |= LDD_F_WRITECONF;
394 /* Index is correctly marked as used */
396 /* If the logs don't contain the mti_nids then add
397 them as failover nids */
398 rc = mgs_check_failnid(obd, mti);
404 /* Ensure this is not a failover node that is connecting first*/
405 static int mgs_check_failover_reg(struct mgs_target_info *mti)
411 ptr = mti->mti_params;
412 while (class_find_param(ptr, PARAM_FAILNODE, &ptr) == 0) {
413 while (class_parse_nid(ptr, &nid, &ptr) == 0) {
414 for (i = 0; i < mti->mti_nid_count; i++) {
415 if (nid == mti->mti_nids[i]) {
416 LCONSOLE_WARN("Denying initial registra"
417 "tion attempt from nid %s"
418 ", specified as failover"
419 "\n",libcfs_nid2str(nid));
420 return -EADDRNOTAVAIL;
428 /* Called whenever a target starts up. Flags indicate first connect, etc. */
429 static int mgs_handle_target_reg(struct ptlrpc_request *req)
431 struct obd_device *obd = req->rq_export->exp_obd;
432 struct mgs_target_info *mti, *rep_mti;
437 mgs_counter_incr(req->rq_export, LPROC_MGS_TARGET_REG);
439 mti = req_capsule_client_get(&req->rq_pill, &RMF_MGS_TARGET_INFO);
441 if (mti->mti_flags & LDD_F_NEED_INDEX)
442 mti->mti_flags |= LDD_F_WRITECONF;
444 if (!(mti->mti_flags & (LDD_F_WRITECONF | LDD_F_UPGRADE14 |
446 /* We're just here as a startup ping. */
447 CDEBUG(D_MGS, "Server %s is running on %s\n",
448 mti->mti_svname, obd_export_nid2str(req->rq_export));
449 rc = mgs_check_target(obd, mti);
450 /* above will set appropriate mti flags */
452 /* Nothing wrong, or fatal error */
453 GOTO(out_nolock, rc);
455 if ((rc = mgs_check_failover_reg(mti)))
456 GOTO(out_nolock, rc);
459 OBD_FAIL_TIMEOUT(OBD_FAIL_MGS_PAUSE_TARGET_REG, 10);
461 if (mti->mti_flags & LDD_F_WRITECONF) {
462 if (mti->mti_flags & SVTYPE_MDT &&
463 mti->mti_stripe_index == 0) {
464 rc = mgs_erase_logs(obd, mti->mti_fsname);
465 LCONSOLE_WARN("%s: Logs for fs %s were removed by user "
466 "request. All servers must be restarted "
467 "in order to regenerate the logs."
468 "\n", obd->obd_name, mti->mti_fsname);
469 } else if (mti->mti_flags &
470 (SVTYPE_OST | SVTYPE_MDT)) {
471 rc = mgs_erase_log(obd, mti->mti_svname);
472 LCONSOLE_WARN("%s: Regenerating %s log by user "
474 obd->obd_name, mti->mti_svname);
476 mti->mti_flags |= LDD_F_UPDATE;
477 /* Erased logs means start from scratch. */
478 mti->mti_flags &= ~LDD_F_UPGRADE14;
481 rc = mgs_find_or_make_fsdb(obd, mti->mti_fsname, &fsdb);
483 CERROR("Can't get db for %s: %d\n", mti->mti_fsname, rc);
484 GOTO(out_nolock, rc);
488 * Log writing contention is handled by the fsdb_sem.
490 * It should be alright if someone was reading while we were
491 * updating the logs - if we revoke at the end they will just update
492 * from where they left off.
496 if (mti->mti_flags & LDD_F_UPGRADE14) {
497 rc = mgs_upgrade_sv_14(obd, mti, fsdb);
499 CERROR("Can't upgrade from 1.4 (%d)\n", rc);
503 /* We're good to go */
504 mti->mti_flags |= LDD_F_UPDATE;
508 if (mti->mti_flags & LDD_F_UPDATE) {
509 CDEBUG(D_MGS, "updating %s, index=%d\n", mti->mti_svname,
510 mti->mti_stripe_index);
512 /* create or update the target log
513 and update the client/mdt logs */
514 rc = mgs_write_log_target(obd, mti, fsdb);
516 CERROR("Failed to write %s log (%d)\n",
517 mti->mti_svname, rc);
521 mti->mti_flags &= ~(LDD_F_VIRGIN | LDD_F_UPDATE |
522 LDD_F_NEED_INDEX | LDD_F_WRITECONF |
524 mti->mti_flags |= LDD_F_REWRITE_LDD;
528 mgs_revoke_lock(obd, fsdb);
531 CDEBUG(D_MGS, "replying with %s, index=%d, rc=%d\n", mti->mti_svname,
532 mti->mti_stripe_index, rc);
533 rc = req_capsule_server_pack(&req->rq_pill);
537 /* send back the whole mti in the reply */
538 rep_mti = req_capsule_server_get(&req->rq_pill, &RMF_MGS_TARGET_INFO);
541 /* Flush logs to disk */
542 fsfilt_sync(obd, obd->u.mgs.mgs_sb);
546 static int mgs_set_info_rpc(struct ptlrpc_request *req)
548 struct obd_device *obd = req->rq_export->exp_obd;
549 struct mgs_send_param *msp, *rep_msp;
551 struct lustre_cfg_bufs bufs;
552 struct lustre_cfg *lcfg;
553 char fsname[MTI_NAME_MAXLEN];
556 msp = req_capsule_client_get(&req->rq_pill, &RMF_MGS_SEND_PARAM);
559 /* Construct lustre_cfg structure to pass to function mgs_setparam */
560 lustre_cfg_bufs_reset(&bufs, NULL);
561 lustre_cfg_bufs_set_string(&bufs, 1, msp->mgs_param);
562 lcfg = lustre_cfg_new(LCFG_PARAM, &bufs);
563 rc = mgs_setparam(obd, lcfg, fsname);
565 CERROR("Error %d in setting the parameter %s for fs %s\n",
566 rc, msp->mgs_param, fsname);
570 lustre_cfg_free(lcfg);
572 rc = req_capsule_server_pack(&req->rq_pill);
574 rep_msp = req_capsule_server_get(&req->rq_pill, &RMF_MGS_SEND_PARAM);
581 * similar as in ost_connect_check_sptlrpc()
583 static int mgs_connect_check_sptlrpc(struct ptlrpc_request *req)
585 struct obd_export *exp = req->rq_export;
586 struct obd_device *obd = exp->exp_obd;
588 struct sptlrpc_flavor flvr;
591 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
592 rc = mgs_find_or_make_fsdb(obd, MGSSELF_NAME, &fsdb);
596 cfs_down(&fsdb->fsdb_sem);
597 if (sptlrpc_rule_set_choose(&fsdb->fsdb_srpc_gen,
598 LUSTRE_SP_MGC, LUSTRE_SP_MGS,
601 /* by defualt allow any flavors */
602 flvr.sf_rpc = SPTLRPC_FLVR_ANY;
604 cfs_up(&fsdb->fsdb_sem);
606 cfs_spin_lock(&exp->exp_lock);
608 exp->exp_sp_peer = req->rq_sp_from;
609 exp->exp_flvr = flvr;
611 if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
612 exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
613 CERROR("invalid rpc flavor %x, expect %x, from %s\n",
614 req->rq_flvr.sf_rpc, exp->exp_flvr.sf_rpc,
615 libcfs_nid2str(req->rq_peer.nid));
619 cfs_spin_unlock(&exp->exp_lock);
621 if (exp->exp_sp_peer != req->rq_sp_from) {
622 CERROR("RPC source %s doesn't match %s\n",
623 sptlrpc_part2name(req->rq_sp_from),
624 sptlrpc_part2name(exp->exp_sp_peer));
627 rc = sptlrpc_target_export_check(exp, req);
634 /* Called whenever a target cleans up. */
635 /* XXX - Currently unused */
636 static int mgs_handle_target_del(struct ptlrpc_request *req)
639 mgs_counter_incr(req->rq_export, LPROC_MGS_TARGET_DEL);
643 /* XXX - Currently unused */
644 static int mgs_handle_exception(struct ptlrpc_request *req)
647 mgs_counter_incr(req->rq_export, LPROC_MGS_EXCEPTION);
651 /* TODO: handle requests in a similar way as MDT: see mdt_handle_common() */
652 int mgs_handle(struct ptlrpc_request *req)
654 int fail = OBD_FAIL_MGS_ALL_REPLY_NET;
658 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
659 OBD_FAIL_TIMEOUT_MS(OBD_FAIL_MGS_PAUSE_REQ, obd_fail_val);
660 if (OBD_FAIL_CHECK(OBD_FAIL_MGS_ALL_REQUEST_NET))
663 LASSERT(current->journal_info == NULL);
664 opc = lustre_msg_get_opc(req->rq_reqmsg);
666 if (opc == SEC_CTX_INIT ||
667 opc == SEC_CTX_INIT_CONT ||
671 if (opc != MGS_CONNECT) {
672 if (!class_connected_export(req->rq_export)) {
673 CERROR("lustre_mgs: operation %d on unconnected MGS\n",
675 req->rq_status = -ENOTCONN;
676 GOTO(out, rc = -ENOTCONN);
682 DEBUG_REQ(D_MGS, req, "connect");
683 /* MGS and MDS have same request format for connect */
684 req_capsule_set(&req->rq_pill, &RQF_MDS_CONNECT);
685 rc = target_handle_connect(req);
687 rc = mgs_connect_check_sptlrpc(req);
689 if (!rc && (lustre_msg_get_conn_cnt(req->rq_reqmsg) > 1))
690 /* Make clients trying to reconnect after a MGS restart
691 happy; also requires obd_replayable */
692 lustre_msg_add_op_flags(req->rq_repmsg,
693 MSG_CONNECT_RECONNECT);
696 DEBUG_REQ(D_MGS, req, "disconnect");
697 /* MGS and MDS have same request format for disconnect */
698 req_capsule_set(&req->rq_pill, &RQF_MDS_DISCONNECT);
699 rc = target_handle_disconnect(req);
700 req->rq_status = rc; /* superfluous? */
703 DEBUG_REQ(D_MGS, req, "exception");
704 rc = mgs_handle_exception(req);
707 DEBUG_REQ(D_MGS, req, "target add");
708 req_capsule_set(&req->rq_pill, &RQF_MGS_TARGET_REG);
709 rc = mgs_handle_target_reg(req);
712 DEBUG_REQ(D_MGS, req, "target del");
713 rc = mgs_handle_target_del(req);
716 DEBUG_REQ(D_MGS, req, "set_info");
717 req_capsule_set(&req->rq_pill, &RQF_MGS_SET_INFO);
718 rc = mgs_set_info_rpc(req);
722 DEBUG_REQ(D_MGS, req, "enqueue");
723 req_capsule_set(&req->rq_pill, &RQF_LDLM_ENQUEUE);
724 rc = ldlm_handle_enqueue(req, ldlm_server_completion_ast,
725 ldlm_server_blocking_ast, NULL);
727 case LDLM_BL_CALLBACK:
728 case LDLM_CP_CALLBACK:
729 DEBUG_REQ(D_MGS, req, "callback");
730 CERROR("callbacks should not happen on MGS\n");
735 DEBUG_REQ(D_INFO, req, "ping");
736 req_capsule_set(&req->rq_pill, &RQF_OBD_PING);
737 rc = target_handle_ping(req);
740 DEBUG_REQ(D_MGS, req, "log cancel");
741 rc = -ENOTSUPP; /* la la la */
744 case LLOG_ORIGIN_HANDLE_CREATE:
745 DEBUG_REQ(D_MGS, req, "llog_init");
746 req_capsule_set(&req->rq_pill, &RQF_LLOG_ORIGIN_HANDLE_CREATE);
747 rc = llog_origin_handle_create(req);
749 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
750 DEBUG_REQ(D_MGS, req, "llog next block");
751 req_capsule_set(&req->rq_pill,
752 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
753 rc = llog_origin_handle_next_block(req);
755 case LLOG_ORIGIN_HANDLE_READ_HEADER:
756 DEBUG_REQ(D_MGS, req, "llog read header");
757 req_capsule_set(&req->rq_pill,
758 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
759 rc = llog_origin_handle_read_header(req);
761 case LLOG_ORIGIN_HANDLE_CLOSE:
762 DEBUG_REQ(D_MGS, req, "llog close");
763 rc = llog_origin_handle_close(req);
766 DEBUG_REQ(D_MGS, req, "llog catinfo");
767 req_capsule_set(&req->rq_pill, &RQF_LLOG_CATINFO);
768 rc = llog_catinfo(req);
771 req->rq_status = -ENOTSUPP;
772 rc = ptlrpc_error(req);
776 LASSERT(current->journal_info == NULL);
779 CERROR("MGS handle cmd=%d rc=%d\n", opc, rc);
782 target_send_reply(req, rc, fail);
786 static inline int mgs_init_export(struct obd_export *exp)
788 cfs_spin_lock(&exp->exp_lock);
789 exp->exp_connecting = 1;
790 cfs_spin_unlock(&exp->exp_lock);
792 return ldlm_init_export(exp);
795 static inline int mgs_destroy_export(struct obd_export *exp)
799 target_destroy_export(exp);
800 mgs_client_free(exp);
801 ldlm_destroy_export(exp);
806 static int mgs_extract_fs_pool(char * arg, char *fsname, char *poolname)
811 for (ptr = arg; (*ptr != '\0') && (*ptr != '.'); ptr++ ) {
819 strcpy(poolname, ptr);
824 static int mgs_iocontrol_pool(struct obd_device *obd,
825 struct obd_ioctl_data *data)
828 struct lustre_cfg *lcfg = NULL;
829 struct llog_rec_hdr rec;
831 char *poolname = NULL;
834 OBD_ALLOC(fsname, MTI_NAME_MAXLEN);
838 OBD_ALLOC(poolname, LOV_MAXPOOLNAME + 1);
839 if (poolname == NULL) {
843 rec.lrh_len = llog_data_len(data->ioc_plen1);
845 if (data->ioc_type == LUSTRE_CFG_TYPE) {
846 rec.lrh_type = OBD_CFG_REC;
848 CERROR("unknown cfg record type:%d \n", data->ioc_type);
853 if (data->ioc_plen1 > CFS_PAGE_SIZE) {
858 OBD_ALLOC(lcfg, data->ioc_plen1);
860 GOTO(out_pool, rc = -ENOMEM);
862 if (cfs_copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
863 GOTO(out_pool, rc = -EFAULT);
865 if (lcfg->lcfg_bufcount < 2) {
866 GOTO(out_pool, rc = -EFAULT);
869 /* first arg is always <fsname>.<poolname> */
870 mgs_extract_fs_pool(lustre_cfg_string(lcfg, 1), fsname,
873 switch (lcfg->lcfg_command) {
874 case LCFG_POOL_NEW: {
875 if (lcfg->lcfg_bufcount != 2)
877 rc = mgs_pool_cmd(obd, LCFG_POOL_NEW, fsname,
881 case LCFG_POOL_ADD: {
882 if (lcfg->lcfg_bufcount != 3)
884 rc = mgs_pool_cmd(obd, LCFG_POOL_ADD, fsname, poolname,
885 lustre_cfg_string(lcfg, 2));
888 case LCFG_POOL_REM: {
889 if (lcfg->lcfg_bufcount != 3)
891 rc = mgs_pool_cmd(obd, LCFG_POOL_REM, fsname, poolname,
892 lustre_cfg_string(lcfg, 2));
895 case LCFG_POOL_DEL: {
896 if (lcfg->lcfg_bufcount != 2)
898 rc = mgs_pool_cmd(obd, LCFG_POOL_DEL, fsname,
909 CERROR("OBD_IOC_POOL err %d, cmd %X for pool %s.%s\n",
910 rc, lcfg->lcfg_command, fsname, poolname);
916 OBD_FREE(lcfg, data->ioc_plen1);
919 OBD_FREE(fsname, MTI_NAME_MAXLEN);
921 if (poolname != NULL)
922 OBD_FREE(poolname, LOV_MAXPOOLNAME + 1);
927 /* from mdt_iocontrol */
928 int mgs_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
929 void *karg, void *uarg)
931 struct obd_device *obd = exp->exp_obd;
932 struct obd_ioctl_data *data = karg;
933 struct lvfs_run_ctxt saved;
937 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
941 case OBD_IOC_PARAM: {
942 struct lustre_cfg *lcfg;
943 struct llog_rec_hdr rec;
944 char fsname[MTI_NAME_MAXLEN];
946 rec.lrh_len = llog_data_len(data->ioc_plen1);
948 if (data->ioc_type == LUSTRE_CFG_TYPE) {
949 rec.lrh_type = OBD_CFG_REC;
951 CERROR("unknown cfg record type:%d \n", data->ioc_type);
955 OBD_ALLOC(lcfg, data->ioc_plen1);
958 if (cfs_copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
959 GOTO(out_free, rc = -EFAULT);
961 if (lcfg->lcfg_bufcount < 1)
962 GOTO(out_free, rc = -EINVAL);
964 rc = mgs_setparam(obd, lcfg, fsname);
966 CERROR("setparam err %d\n", rc);
970 OBD_FREE(lcfg, data->ioc_plen1);
975 RETURN(mgs_iocontrol_pool(obd, data));
978 case OBD_IOC_DUMP_LOG: {
979 struct llog_ctxt *ctxt;
980 ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
981 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
982 rc = class_config_dump_llog(ctxt, data->ioc_inlbuf1, NULL);
983 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
989 case OBD_IOC_LLOG_CHECK:
990 case OBD_IOC_LLOG_INFO:
991 case OBD_IOC_LLOG_PRINT: {
992 struct llog_ctxt *ctxt;
993 ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
995 push_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
996 rc = llog_ioctl(ctxt, cmd, data);
997 pop_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
1004 CDEBUG(D_INFO, "unknown command %x\n", cmd);
1010 /* use obd ops to offer management infrastructure */
1011 static struct obd_ops mgs_obd_ops = {
1012 .o_owner = THIS_MODULE,
1013 .o_connect = mgs_connect,
1014 .o_reconnect = mgs_reconnect,
1015 .o_disconnect = mgs_disconnect,
1016 .o_setup = mgs_setup,
1017 .o_precleanup = mgs_precleanup,
1018 .o_cleanup = mgs_cleanup,
1019 .o_init_export = mgs_init_export,
1020 .o_destroy_export = mgs_destroy_export,
1021 .o_iocontrol = mgs_iocontrol,
1022 .o_llog_init = mgs_llog_init,
1023 .o_llog_finish = mgs_llog_finish
1026 static int __init mgs_init(void)
1028 struct lprocfs_static_vars lvars;
1030 lprocfs_mgs_init_vars(&lvars);
1031 class_register_type(&mgs_obd_ops, NULL,
1032 lvars.module_vars, LUSTRE_MGS_NAME, NULL);
1037 static void /*__exit*/ mgs_exit(void)
1039 class_unregister_type(LUSTRE_MGS_NAME);
1042 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
1043 MODULE_DESCRIPTION("Lustre Management Server (MGS)");
1044 MODULE_LICENSE("GPL");
1046 module_init(mgs_init);
1047 module_exit(mgs_exit);