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"
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_client_add(obd, lexp, 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;
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 /* Called whenever a target starts up. Flags indicate first connect, etc. */
405 static int mgs_handle_target_reg(struct ptlrpc_request *req)
407 struct obd_device *obd = req->rq_export->exp_obd;
408 struct mgs_target_info *mti, *rep_mti;
413 mgs_counter_incr(req->rq_export, LPROC_MGS_TARGET_REG);
415 mti = req_capsule_client_get(&req->rq_pill, &RMF_MGS_TARGET_INFO);
416 if (!(mti->mti_flags & (LDD_F_WRITECONF | LDD_F_UPGRADE14 |
418 /* We're just here as a startup ping. */
419 CDEBUG(D_MGS, "Server %s is running on %s\n",
420 mti->mti_svname, obd_export_nid2str(req->rq_export));
421 rc = mgs_check_target(obd, mti);
422 /* above will set appropriate mti flags */
424 /* Nothing wrong, or fatal error */
425 GOTO(out_nolock, rc);
428 OBD_FAIL_TIMEOUT(OBD_FAIL_MGS_PAUSE_TARGET_REG, 10);
430 if (mti->mti_flags & LDD_F_WRITECONF) {
431 if (mti->mti_flags & LDD_F_SV_TYPE_MDT &&
432 mti->mti_stripe_index == 0) {
433 rc = mgs_erase_logs(obd, mti->mti_fsname);
434 LCONSOLE_WARN("%s: Logs for fs %s were removed by user "
435 "request. All servers must be restarted "
436 "in order to regenerate the logs."
437 "\n", obd->obd_name, mti->mti_fsname);
438 } else if (mti->mti_flags &
439 (LDD_F_SV_TYPE_OST | LDD_F_SV_TYPE_MDT)) {
440 rc = mgs_erase_log(obd, mti->mti_svname);
441 LCONSOLE_WARN("%s: Regenerating %s log by user "
443 obd->obd_name, mti->mti_svname);
445 mti->mti_flags |= LDD_F_UPDATE;
446 /* Erased logs means start from scratch. */
447 mti->mti_flags &= ~LDD_F_UPGRADE14;
450 rc = mgs_find_or_make_fsdb(obd, mti->mti_fsname, &fsdb);
452 CERROR("Can't get db for %s: %d\n", mti->mti_fsname, rc);
453 GOTO(out_nolock, rc);
457 * Log writing contention is handled by the fsdb_sem.
459 * It should be alright if someone was reading while we were
460 * updating the logs - if we revoke at the end they will just update
461 * from where they left off.
465 if (mti->mti_flags & LDD_F_UPGRADE14) {
466 rc = mgs_upgrade_sv_14(obd, mti, fsdb);
468 CERROR("Can't upgrade from 1.4 (%d)\n", rc);
472 /* We're good to go */
473 mti->mti_flags |= LDD_F_UPDATE;
477 if (mti->mti_flags & LDD_F_UPDATE) {
478 CDEBUG(D_MGS, "updating %s, index=%d\n", mti->mti_svname,
479 mti->mti_stripe_index);
481 /* create or update the target log
482 and update the client/mdt logs */
483 rc = mgs_write_log_target(obd, mti, fsdb);
485 CERROR("Failed to write %s log (%d)\n",
486 mti->mti_svname, rc);
490 mti->mti_flags &= ~(LDD_F_VIRGIN | LDD_F_UPDATE |
491 LDD_F_NEED_INDEX | LDD_F_WRITECONF |
493 mti->mti_flags |= LDD_F_REWRITE_LDD;
497 mgs_revoke_lock(obd, fsdb);
500 CDEBUG(D_MGS, "replying with %s, index=%d, rc=%d\n", mti->mti_svname,
501 mti->mti_stripe_index, rc);
502 rc = req_capsule_server_pack(&req->rq_pill);
506 /* send back the whole mti in the reply */
507 rep_mti = req_capsule_server_get(&req->rq_pill, &RMF_MGS_TARGET_INFO);
510 /* Flush logs to disk */
511 fsfilt_sync(obd, obd->u.mgs.mgs_sb);
515 static int mgs_set_info_rpc(struct ptlrpc_request *req)
517 struct obd_device *obd = req->rq_export->exp_obd;
518 struct mgs_send_param *msp, *rep_msp;
520 struct lustre_cfg_bufs bufs;
521 struct lustre_cfg *lcfg;
522 char fsname[MTI_NAME_MAXLEN];
525 msp = req_capsule_client_get(&req->rq_pill, &RMF_MGS_SEND_PARAM);
528 /* Construct lustre_cfg structure to pass to function mgs_setparam */
529 lustre_cfg_bufs_reset(&bufs, NULL);
530 lustre_cfg_bufs_set_string(&bufs, 1, msp->mgs_param);
531 lcfg = lustre_cfg_new(LCFG_PARAM, &bufs);
532 rc = mgs_setparam(obd, lcfg, fsname);
534 CERROR("Error %d in setting the parameter %s for fs %s\n",
535 rc, msp->mgs_param, fsname);
539 lustre_cfg_free(lcfg);
541 rc = req_capsule_server_pack(&req->rq_pill);
543 rep_msp = req_capsule_server_get(&req->rq_pill, &RMF_MGS_SEND_PARAM);
550 * similar as in ost_connect_check_sptlrpc()
552 static int mgs_connect_check_sptlrpc(struct ptlrpc_request *req)
554 struct obd_export *exp = req->rq_export;
555 struct obd_device *obd = exp->exp_obd;
557 struct sptlrpc_flavor flvr;
560 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
561 rc = mgs_find_or_make_fsdb(obd, MGSSELF_NAME, &fsdb);
565 cfs_down(&fsdb->fsdb_sem);
566 if (sptlrpc_rule_set_choose(&fsdb->fsdb_srpc_gen,
567 LUSTRE_SP_MGC, LUSTRE_SP_MGS,
570 /* by defualt allow any flavors */
571 flvr.sf_rpc = SPTLRPC_FLVR_ANY;
573 cfs_up(&fsdb->fsdb_sem);
575 cfs_spin_lock(&exp->exp_lock);
577 exp->exp_sp_peer = req->rq_sp_from;
578 exp->exp_flvr = flvr;
580 if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
581 exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
582 CERROR("invalid rpc flavor %x, expect %x, from %s\n",
583 req->rq_flvr.sf_rpc, exp->exp_flvr.sf_rpc,
584 libcfs_nid2str(req->rq_peer.nid));
588 cfs_spin_unlock(&exp->exp_lock);
590 if (exp->exp_sp_peer != req->rq_sp_from) {
591 CERROR("RPC source %s doesn't match %s\n",
592 sptlrpc_part2name(req->rq_sp_from),
593 sptlrpc_part2name(exp->exp_sp_peer));
596 rc = sptlrpc_target_export_check(exp, req);
603 /* Called whenever a target cleans up. */
604 /* XXX - Currently unused */
605 static int mgs_handle_target_del(struct ptlrpc_request *req)
608 mgs_counter_incr(req->rq_export, LPROC_MGS_TARGET_DEL);
612 /* XXX - Currently unused */
613 static int mgs_handle_exception(struct ptlrpc_request *req)
616 mgs_counter_incr(req->rq_export, LPROC_MGS_EXCEPTION);
620 /* TODO: handle requests in a similar way as MDT: see mdt_handle_common() */
621 int mgs_handle(struct ptlrpc_request *req)
623 int fail = OBD_FAIL_MGS_ALL_REPLY_NET;
627 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
628 OBD_FAIL_TIMEOUT_MS(OBD_FAIL_MGS_PAUSE_REQ, obd_fail_val);
629 if (OBD_FAIL_CHECK(OBD_FAIL_MGS_ALL_REQUEST_NET))
632 LASSERT(current->journal_info == NULL);
633 opc = lustre_msg_get_opc(req->rq_reqmsg);
635 if (opc == SEC_CTX_INIT ||
636 opc == SEC_CTX_INIT_CONT ||
640 if (opc != MGS_CONNECT) {
641 if (!class_connected_export(req->rq_export)) {
642 CERROR("lustre_mgs: operation %d on unconnected MGS\n",
644 req->rq_status = -ENOTCONN;
645 GOTO(out, rc = -ENOTCONN);
651 DEBUG_REQ(D_MGS, req, "connect");
652 /* MGS and MDS have same request format for connect */
653 req_capsule_set(&req->rq_pill, &RQF_MDS_CONNECT);
654 rc = target_handle_connect(req);
656 rc = mgs_connect_check_sptlrpc(req);
658 if (!rc && (lustre_msg_get_conn_cnt(req->rq_reqmsg) > 1))
659 /* Make clients trying to reconnect after a MGS restart
660 happy; also requires obd_replayable */
661 lustre_msg_add_op_flags(req->rq_repmsg,
662 MSG_CONNECT_RECONNECT);
665 DEBUG_REQ(D_MGS, req, "disconnect");
666 /* MGS and MDS have same request format for disconnect */
667 req_capsule_set(&req->rq_pill, &RQF_MDS_DISCONNECT);
668 rc = target_handle_disconnect(req);
669 req->rq_status = rc; /* superfluous? */
672 DEBUG_REQ(D_MGS, req, "exception");
673 rc = mgs_handle_exception(req);
676 DEBUG_REQ(D_MGS, req, "target add");
677 req_capsule_set(&req->rq_pill, &RQF_MGS_TARGET_REG);
678 rc = mgs_handle_target_reg(req);
681 DEBUG_REQ(D_MGS, req, "target del");
682 rc = mgs_handle_target_del(req);
685 DEBUG_REQ(D_MGS, req, "set_info");
686 req_capsule_set(&req->rq_pill, &RQF_MGS_SET_INFO);
687 rc = mgs_set_info_rpc(req);
691 DEBUG_REQ(D_MGS, req, "enqueue");
692 req_capsule_set(&req->rq_pill, &RQF_LDLM_ENQUEUE);
693 rc = ldlm_handle_enqueue(req, ldlm_server_completion_ast,
694 ldlm_server_blocking_ast, NULL);
696 case LDLM_BL_CALLBACK:
697 case LDLM_CP_CALLBACK:
698 DEBUG_REQ(D_MGS, req, "callback");
699 CERROR("callbacks should not happen on MGS\n");
704 DEBUG_REQ(D_INFO, req, "ping");
705 req_capsule_set(&req->rq_pill, &RQF_OBD_PING);
706 rc = target_handle_ping(req);
709 DEBUG_REQ(D_MGS, req, "log cancel");
710 rc = -ENOTSUPP; /* la la la */
713 case LLOG_ORIGIN_HANDLE_CREATE:
714 DEBUG_REQ(D_MGS, req, "llog_init");
715 req_capsule_set(&req->rq_pill, &RQF_LLOG_ORIGIN_HANDLE_CREATE);
716 rc = llog_origin_handle_create(req);
718 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
719 DEBUG_REQ(D_MGS, req, "llog next block");
720 req_capsule_set(&req->rq_pill,
721 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
722 rc = llog_origin_handle_next_block(req);
724 case LLOG_ORIGIN_HANDLE_READ_HEADER:
725 DEBUG_REQ(D_MGS, req, "llog read header");
726 req_capsule_set(&req->rq_pill,
727 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
728 rc = llog_origin_handle_read_header(req);
730 case LLOG_ORIGIN_HANDLE_CLOSE:
731 DEBUG_REQ(D_MGS, req, "llog close");
732 rc = llog_origin_handle_close(req);
735 DEBUG_REQ(D_MGS, req, "llog catinfo");
736 req_capsule_set(&req->rq_pill, &RQF_LLOG_CATINFO);
737 rc = llog_catinfo(req);
740 req->rq_status = -ENOTSUPP;
741 rc = ptlrpc_error(req);
745 LASSERT(current->journal_info == NULL);
748 CERROR("MGS handle cmd=%d rc=%d\n", opc, rc);
751 target_send_reply(req, rc, fail);
755 static inline int mgs_init_export(struct obd_export *exp)
757 cfs_spin_lock(&exp->exp_lock);
758 exp->exp_connecting = 1;
759 cfs_spin_unlock(&exp->exp_lock);
761 return ldlm_init_export(exp);
764 static inline int mgs_destroy_export(struct obd_export *exp)
768 target_destroy_export(exp);
769 mgs_client_free(exp);
770 ldlm_destroy_export(exp);
775 static int mgs_extract_fs_pool(char * arg, char *fsname, char *poolname)
780 for (ptr = arg; (*ptr != '\0') && (*ptr != '.'); ptr++ ) {
788 strcpy(poolname, ptr);
793 static int mgs_iocontrol_pool(struct obd_device *obd,
794 struct obd_ioctl_data *data)
797 struct lustre_cfg *lcfg = NULL;
798 struct llog_rec_hdr rec;
800 char *poolname = NULL;
803 OBD_ALLOC(fsname, MTI_NAME_MAXLEN);
807 OBD_ALLOC(poolname, LOV_MAXPOOLNAME + 1);
808 if (poolname == NULL) {
812 rec.lrh_len = llog_data_len(data->ioc_plen1);
814 if (data->ioc_type == LUSTRE_CFG_TYPE) {
815 rec.lrh_type = OBD_CFG_REC;
817 CERROR("unknown cfg record type:%d \n", data->ioc_type);
822 if (data->ioc_plen1 > CFS_PAGE_SIZE) {
827 OBD_ALLOC(lcfg, data->ioc_plen1);
829 GOTO(out_pool, rc = -ENOMEM);
831 if (cfs_copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
832 GOTO(out_pool, rc = -EFAULT);
834 if (lcfg->lcfg_bufcount < 2) {
835 GOTO(out_pool, rc = -EFAULT);
838 /* first arg is always <fsname>.<poolname> */
839 mgs_extract_fs_pool(lustre_cfg_string(lcfg, 1), fsname,
842 switch (lcfg->lcfg_command) {
843 case LCFG_POOL_NEW: {
844 if (lcfg->lcfg_bufcount != 2)
846 rc = mgs_pool_cmd(obd, LCFG_POOL_NEW, fsname,
850 case LCFG_POOL_ADD: {
851 if (lcfg->lcfg_bufcount != 3)
853 rc = mgs_pool_cmd(obd, LCFG_POOL_ADD, fsname, poolname,
854 lustre_cfg_string(lcfg, 2));
857 case LCFG_POOL_REM: {
858 if (lcfg->lcfg_bufcount != 3)
860 rc = mgs_pool_cmd(obd, LCFG_POOL_REM, fsname, poolname,
861 lustre_cfg_string(lcfg, 2));
864 case LCFG_POOL_DEL: {
865 if (lcfg->lcfg_bufcount != 2)
867 rc = mgs_pool_cmd(obd, LCFG_POOL_DEL, fsname,
878 CERROR("OBD_IOC_POOL err %d, cmd %X for pool %s.%s\n",
879 rc, lcfg->lcfg_command, fsname, poolname);
885 OBD_FREE(lcfg, data->ioc_plen1);
888 OBD_FREE(fsname, MTI_NAME_MAXLEN);
890 if (poolname != NULL)
891 OBD_FREE(poolname, LOV_MAXPOOLNAME + 1);
896 /* from mdt_iocontrol */
897 int mgs_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
898 void *karg, void *uarg)
900 struct obd_device *obd = exp->exp_obd;
901 struct obd_ioctl_data *data = karg;
902 struct lvfs_run_ctxt saved;
906 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
910 case OBD_IOC_PARAM: {
911 struct lustre_cfg *lcfg;
912 struct llog_rec_hdr rec;
913 char fsname[MTI_NAME_MAXLEN];
915 rec.lrh_len = llog_data_len(data->ioc_plen1);
917 if (data->ioc_type == LUSTRE_CFG_TYPE) {
918 rec.lrh_type = OBD_CFG_REC;
920 CERROR("unknown cfg record type:%d \n", data->ioc_type);
924 OBD_ALLOC(lcfg, data->ioc_plen1);
927 if (cfs_copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
928 GOTO(out_free, rc = -EFAULT);
930 if (lcfg->lcfg_bufcount < 1)
931 GOTO(out_free, rc = -EINVAL);
933 rc = mgs_setparam(obd, lcfg, fsname);
935 CERROR("setparam err %d\n", rc);
939 OBD_FREE(lcfg, data->ioc_plen1);
944 RETURN(mgs_iocontrol_pool(obd, data));
947 case OBD_IOC_DUMP_LOG: {
948 struct llog_ctxt *ctxt;
949 ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
950 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
951 rc = class_config_dump_llog(ctxt, data->ioc_inlbuf1, NULL);
952 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
958 case OBD_IOC_LLOG_CHECK:
959 case OBD_IOC_LLOG_INFO:
960 case OBD_IOC_LLOG_PRINT: {
961 struct llog_ctxt *ctxt;
962 ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
964 push_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
965 rc = llog_ioctl(ctxt, cmd, data);
966 pop_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
973 CDEBUG(D_INFO, "unknown command %x\n", cmd);
979 /* use obd ops to offer management infrastructure */
980 static struct obd_ops mgs_obd_ops = {
981 .o_owner = THIS_MODULE,
982 .o_connect = mgs_connect,
983 .o_reconnect = mgs_reconnect,
984 .o_disconnect = mgs_disconnect,
985 .o_setup = mgs_setup,
986 .o_precleanup = mgs_precleanup,
987 .o_cleanup = mgs_cleanup,
988 .o_init_export = mgs_init_export,
989 .o_destroy_export = mgs_destroy_export,
990 .o_iocontrol = mgs_iocontrol,
991 .o_llog_init = mgs_llog_init,
992 .o_llog_finish = mgs_llog_finish
995 static int __init mgs_init(void)
997 struct lprocfs_static_vars lvars;
999 lprocfs_mgs_init_vars(&lvars);
1000 class_register_type(&mgs_obd_ops, NULL,
1001 lvars.module_vars, LUSTRE_MGS_NAME, NULL);
1006 static void /*__exit*/ mgs_exit(void)
1008 class_unregister_type(LUSTRE_MGS_NAME);
1011 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
1012 MODULE_DESCRIPTION("Lustre Management Server (MGS)");
1013 MODULE_LICENSE("GPL");
1015 module_init(mgs_init);
1016 module_exit(mgs_exit);