/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * lustre/mgs/mgs_handler.c
- * Lustre Management Server (mgs) request handler
+ * GPL HEADER START
*
- * Copyright (C) 2006 Cluster File Systems, Inc.
- * Author: Nathan Rutman <nathan@clusterfs.com>
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/mgs/mgs_handler.c
+ *
+ * Author: Nathan Rutman <nathan@clusterfs.com>
*/
#ifndef EXPORT_SYMTAB
# define EXPORT_SYMTAB
#endif
#define DEBUG_SUBSYSTEM S_MGS
-#define D_MGS D_CONFIG/*|D_WARNING*/
+#define D_MGS D_CONFIG
#ifdef __KERNEL__
# include <linux/module.h>
#include <lustre_dlm.h>
#include <lprocfs_status.h>
#include <lustre_fsfilt.h>
-#include <lustre_commit_confd.h>
#include <lustre_disk.h>
#include "mgs_internal.h"
-
+#include <lustre_param.h>
/* Establish a connection to the MGS.*/
-static int mgs_connect(struct lustre_handle *conn, struct obd_device *obd,
- struct obd_uuid *cluuid, struct obd_connect_data *data)
+static int mgs_connect(const struct lu_env *env,
+ struct obd_export **exp, struct obd_device *obd,
+ struct obd_uuid *cluuid, struct obd_connect_data *data,
+ void *localdata)
{
- struct obd_export *exp;
+ struct obd_export *lexp;
+ struct lustre_handle conn = { 0 };
int rc;
ENTRY;
- if (!conn || !obd || !cluuid)
+ if (!exp || !obd || !cluuid)
RETURN(-EINVAL);
- rc = class_connect(conn, obd, cluuid);
+ rc = class_connect(&conn, obd, cluuid);
if (rc)
RETURN(rc);
- exp = class_conn2export(conn);
- LASSERT(exp);
+
+ lexp = class_conn2export(&conn);
+ LASSERT(lexp);
+
+ mgs_counter_incr(lexp, LPROC_MGS_CONNECT);
if (data != NULL) {
data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED;
- exp->exp_connect_flags = data->ocd_connect_flags;
+ lexp->exp_connect_flags = data->ocd_connect_flags;
data->ocd_version = LUSTRE_VERSION_CODE;
}
+ rc = mgs_export_stats_init(obd, lexp, localdata);
+
if (rc) {
- class_disconnect(exp);
+ class_disconnect(lexp);
} else {
- class_export_put(exp);
+ *exp = lexp;
}
RETURN(rc);
}
+static int mgs_reconnect(const struct lu_env *env,
+ struct obd_export *exp, struct obd_device *obd,
+ struct obd_uuid *cluuid, struct obd_connect_data *data,
+ void *localdata)
+{
+ ENTRY;
+
+ if (exp == NULL || obd == NULL || cluuid == NULL)
+ RETURN(-EINVAL);
+
+ mgs_counter_incr(exp, LPROC_MGS_CONNECT);
+
+ if (data != NULL) {
+ data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED;
+ exp->exp_connect_flags = data->ocd_connect_flags;
+ data->ocd_version = LUSTRE_VERSION_CODE;
+ }
+
+ RETURN(mgs_export_stats_init(obd, exp, localdata));
+}
+
static int mgs_disconnect(struct obd_export *exp)
{
int rc;
ENTRY;
LASSERT(exp);
- class_export_get(exp);
-
- /* Disconnect early so that clients can't keep using export */
- rc = class_disconnect(exp);
- ldlm_cancel_locks_for_export(exp);
- /* complete all outstanding replies */
- spin_lock(&exp->exp_lock);
- while (!list_empty(&exp->exp_outstanding_replies)) {
- struct ptlrpc_reply_state *rs =
- list_entry(exp->exp_outstanding_replies.next,
- struct ptlrpc_reply_state, rs_exp_list);
- struct ptlrpc_service *svc = rs->rs_service;
+ class_export_get(exp);
+ mgs_counter_incr(exp, LPROC_MGS_DISCONNECT);
- spin_lock(&svc->srv_lock);
- list_del_init(&rs->rs_exp_list);
- ptlrpc_schedule_difficult_reply(rs);
- spin_unlock(&svc->srv_lock);
- }
- spin_unlock(&exp->exp_lock);
+ rc = server_disconnect_export(exp);
class_export_put(exp);
RETURN(rc);
static int mgs_cleanup(struct obd_device *obd);
static int mgs_handle(struct ptlrpc_request *req);
+static int mgs_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
+ struct obd_device *tgt, int *index)
+{
+ int rc;
+ ENTRY;
+
+ LASSERT(olg == &obd->obd_olg);
+ rc = llog_setup(obd, olg, LLOG_CONFIG_ORIG_CTXT, obd, 0, NULL,
+ &llog_lvfs_ops);
+ RETURN(rc);
+}
+
+static int mgs_llog_finish(struct obd_device *obd, int count)
+{
+ struct llog_ctxt *ctxt;
+ int rc = 0;
+ ENTRY;
+
+ ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
+ if (ctxt)
+ rc = llog_cleanup(ctxt);
+
+ RETURN(rc);
+}
+
/* Start the MGS obd */
-static int mgs_setup(struct obd_device *obd, obd_count len, void *buf)
+static int mgs_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
{
struct lprocfs_static_vars lvars;
struct mgs_obd *mgs = &obd->u.mgs;
/* Find our disk */
lmi = server_get_mount(obd->obd_name);
- if (!lmi)
+ if (!lmi)
RETURN(rc = -EINVAL);
mnt = lmi->lmi_mnt;
if (IS_ERR(obd->obd_fsops))
GOTO(err_put, rc = PTR_ERR(obd->obd_fsops));
+ if (lvfs_check_rdonly(lvfs_sbdev(mnt->mnt_sb))) {
+ CERROR("%s: Underlying device is marked as read-only. "
+ "Setup failed\n", obd->obd_name);
+ GOTO(err_ops, rc = -EROFS);
+ }
+
/* namespace for mgs llog */
- obd->obd_namespace = ldlm_namespace_new("MGS", LDLM_NAMESPACE_SERVER);
- if (obd->obd_namespace == NULL) {
- mgs_cleanup(obd);
+ obd->obd_namespace = ldlm_namespace_new(obd ,"MGS",
+ LDLM_NAMESPACE_SERVER,
+ LDLM_NAMESPACE_MODEST,
+ LDLM_NS_TYPE_MGT);
+ if (obd->obd_namespace == NULL)
GOTO(err_ops, rc = -ENOMEM);
- }
/* ldlm setup */
ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
"mgs_ldlm_client", &obd->obd_ldlm_client);
- LASSERT(!lvfs_check_rdonly(lvfs_sbdev(mnt->mnt_sb)));
-
rc = mgs_fs_setup(obd, mnt);
if (rc) {
CERROR("%s: MGS filesystem method init failed: rc = %d\n",
GOTO(err_ns, rc);
}
- rc = llog_start_commit_thread();
- if (rc < 0)
- GOTO(err_fs, rc);
-
- rc = llog_setup(obd, LLOG_CONFIG_ORIG_CTXT, obd, 0, NULL,
- &llog_lvfs_ops);
+ rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
if (rc)
GOTO(err_fs, rc);
/* Internal mgs setup */
mgs_init_fsdb_list(obd);
- sema_init(&mgs->mgs_sem, 1);
+ cfs_sema_init(&mgs->mgs_sem, 1);
+
+ /* Setup proc */
+ lprocfs_mgs_init_vars(&lvars);
+ if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0) {
+ lproc_mgs_setup(obd);
+ rc = lprocfs_alloc_md_stats(obd, LPROC_MGS_LAST);
+ if (rc)
+ GOTO(err_llog, rc);
+ }
/* Start the service threads */
mgs->mgs_service =
ptlrpc_init_svc(MGS_NBUFS, MGS_BUFSIZE, MGS_MAXREQSIZE,
MGS_MAXREPSIZE, MGS_REQUEST_PORTAL,
- MGC_REPLY_PORTAL, MGS_SERVICE_WATCHDOG_TIMEOUT,
+ MGC_REPLY_PORTAL, 2,
mgs_handle, LUSTRE_MGS_NAME,
- obd->obd_proc_entry, NULL,
+ obd->obd_proc_entry, target_print_req,
MGS_THREADS_AUTO_MIN, MGS_THREADS_AUTO_MAX,
- "ll_mgs");
+ "ll_mgs", LCT_MD_THREAD, NULL);
if (!mgs->mgs_service) {
CERROR("failed to start service\n");
- GOTO(err_fs, rc = -ENOMEM);
+ GOTO(err_llog, rc = -ENOMEM);
}
- rc = ptlrpc_start_threads(obd, mgs->mgs_service);
+ rc = ptlrpc_start_threads(mgs->mgs_service);
if (rc)
GOTO(err_thread, rc);
- /* Setup proc */
- lprocfs_init_vars(mgs, &lvars);
- if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0) {
- lproc_mgs_setup(obd);
- }
-
ping_evictor_start();
LCONSOLE_INFO("MGS %s started\n", obd->obd_name);
err_thread:
ptlrpc_unregister_service(mgs->mgs_service);
+err_llog:
+ lproc_mgs_cleanup(obd);
+ obd_llog_finish(obd, 0);
err_fs:
/* No extra cleanup needed for llog_init_commit_thread() */
mgs_fs_cleanup(obd);
err_ns:
- ldlm_namespace_free(obd->obd_namespace, 0);
+ ldlm_namespace_free(obd->obd_namespace, NULL, 0);
obd->obd_namespace = NULL;
err_ops:
fsfilt_put_ops(obd->obd_fsops);
switch (stage) {
case OBD_CLEANUP_EARLY:
case OBD_CLEANUP_EXPORTS:
- break;
- case OBD_CLEANUP_SELF_EXP:
- llog_cleanup(llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT));
rc = obd_llog_finish(obd, 0);
break;
- case OBD_CLEANUP_OBD:
- break;
}
RETURN(rc);
}
-static int mgs_ldlm_nsfree(void *data)
-{
- struct ldlm_namespace *ns = (struct ldlm_namespace *)data;
- int rc;
- ENTRY;
-
- ptlrpc_daemonize("ll_mgs_nsfree");
- rc = ldlm_namespace_free(ns, 1 /* obd_force should always be on */);
- RETURN(rc);
-}
-
+/**
+ * Performs cleanup procedures for passed \a obd given it is mgs obd.
+ */
static int mgs_cleanup(struct obd_device *obd)
{
struct mgs_obd *mgs = &obd->u.mgs;
ENTRY;
- ping_evictor_stop();
-
if (mgs->mgs_sb == NULL)
RETURN(0);
-
- ptlrpc_unregister_service(mgs->mgs_service);
- mgs_cleanup_fsdb_list(obd);
+ ping_evictor_stop();
- lprocfs_obd_cleanup(obd);
- mgs->mgs_proc_live = NULL;
+ ptlrpc_unregister_service(mgs->mgs_service);
+ mgs_cleanup_fsdb_list(obd);
+ lproc_mgs_cleanup(obd);
mgs_fs_cleanup(obd);
server_put_mount(obd->obd_name, mgs->mgs_vfsmnt);
mgs->mgs_sb = NULL;
- /* Free the namespace in it's own thread, so that if the
- ldlm_cancel_handler put the last mgs obd ref, we won't
- deadlock here. */
- cfs_kernel_thread(mgs_ldlm_nsfree, obd->obd_namespace,
- CLONE_VM | CLONE_FILES);
+ ldlm_namespace_free(obd->obd_namespace, NULL, 1);
+ obd->obd_namespace = NULL;
fsfilt_put_ops(obd->obd_fsops);
int rc, flags = 0;
ENTRY;
- rc = mgc_logname2resid(fsname, &res_id);
- if (!rc)
- rc = ldlm_cli_enqueue_local(obd->obd_namespace, res_id,
+ rc = mgc_fsname2resid(fsname, &res_id, CONFIG_T_CONFIG);
+ if (!rc)
+ rc = ldlm_cli_enqueue_local(obd->obd_namespace, &res_id,
LDLM_PLAIN, NULL, LCK_EX,
&flags, ldlm_blocking_ast,
ldlm_completion_ast, NULL,
fsname, 0, NULL, lockh);
- if (rc)
+ if (rc)
CERROR("can't take cfg lock for %s (%d)\n", fsname, rc);
-
+
RETURN(rc);
}
RETURN(0);
}
+void mgs_revoke_lock(struct obd_device *obd, struct fs_db *fsdb)
+{
+ struct lustre_handle lockh;
+ int lockrc;
+
+ LASSERT(fsdb->fsdb_name[0] != '\0');
+
+ if (cfs_test_and_set_bit(FSDB_REVOKING_LOCK, &fsdb->fsdb_flags) == 0) {
+ lockrc = mgs_get_cfg_lock(obd, fsdb->fsdb_name, &lockh);
+ /* clear the bit before lock put */
+ cfs_clear_bit(FSDB_REVOKING_LOCK, &fsdb->fsdb_flags);
+
+ if (lockrc != ELDLM_OK)
+ CERROR("lock error %d for fs %s\n",
+ lockrc, fsdb->fsdb_name);
+ else
+ mgs_put_cfg_lock(&lockh);
+ }
+}
+
/* rc=0 means ok
1 means update
<0 means error */
rc = mgs_check_index(obd, mti);
if (rc == 0) {
- LCONSOLE_ERROR("%s claims to have registered, but this MGS "
- "does not know about it. Assuming writeconf.\n",
- mti->mti_svname);
- mti->mti_flags |= LDD_F_WRITECONF;
- rc = 1;
+ LCONSOLE_ERROR_MSG(0x13b, "%s claims to have registered, but "
+ "this MGS does not know about it, preventing "
+ "registration.\n", mti->mti_svname);
+ rc = -ENOENT;
} else if (rc == -1) {
- LCONSOLE_ERROR("Client log %s-client has disappeared! "
- "Regenerating all logs.\n",
- mti->mti_fsname);
+ LCONSOLE_ERROR_MSG(0x13c, "Client log %s-client has "
+ "disappeared! Regenerating all logs.\n",
+ mti->mti_fsname);
mti->mti_flags |= LDD_F_WRITECONF;
rc = 1;
} else {
/* Index is correctly marked as used */
- /* If the logs don't contain the mti_nids then add
+ /* If the logs don't contain the mti_nids then add
them as failover nids */
rc = mgs_check_failnid(obd, mti);
}
RETURN(rc);
}
+/* Ensure this is not a failover node that is connecting first*/
+static int mgs_check_failover_reg(struct mgs_target_info *mti)
+{
+ lnet_nid_t nid;
+ char *ptr;
+ int i;
+
+ ptr = mti->mti_params;
+ while (class_find_param(ptr, PARAM_FAILNODE, &ptr) == 0) {
+ while (class_parse_nid(ptr, &nid, &ptr) == 0) {
+ for (i = 0; i < mti->mti_nid_count; i++) {
+ if (nid == mti->mti_nids[i]) {
+ LCONSOLE_WARN("Denying initial registra"
+ "tion attempt from nid %s"
+ ", specified as failover"
+ "\n",libcfs_nid2str(nid));
+ return -EADDRNOTAVAIL;
+ }
+ }
+ }
+ }
+ return 0;
+}
+
/* Called whenever a target starts up. Flags indicate first connect, etc. */
static int mgs_handle_target_reg(struct ptlrpc_request *req)
-{
+{
struct obd_device *obd = req->rq_export->exp_obd;
- struct lustre_handle lockh;
struct mgs_target_info *mti, *rep_mti;
- int rep_size[] = { sizeof(struct ptlrpc_body), sizeof(*mti) };
- int rc = 0, lockrc;
+ struct fs_db *fsdb;
+ int rc = 0;
ENTRY;
- mti = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*mti),
- lustre_swab_mgs_target_info);
-
+ mgs_counter_incr(req->rq_export, LPROC_MGS_TARGET_REG);
+
+ mti = req_capsule_client_get(&req->rq_pill, &RMF_MGS_TARGET_INFO);
+
+ if (mti->mti_flags & LDD_F_NEED_INDEX)
+ mti->mti_flags |= LDD_F_WRITECONF;
+
if (!(mti->mti_flags & (LDD_F_WRITECONF | LDD_F_UPGRADE14 |
LDD_F_UPDATE))) {
/* We're just here as a startup ping. */
mti->mti_svname, obd_export_nid2str(req->rq_export));
rc = mgs_check_target(obd, mti);
/* above will set appropriate mti flags */
- if (rc <= 0)
+ if (rc <= 0)
/* Nothing wrong, or fatal error */
GOTO(out_nolock, rc);
+ } else {
+ if (!(mti->mti_flags & LDD_F_NO_PRIMNODE)
+ && (rc = mgs_check_failover_reg(mti)))
+ GOTO(out_nolock, rc);
}
- /* Revoke the config lock to make sure nobody is reading. */
- /* Although actually I think it should be alright if
- someone was reading while we were updating the logs - if we
- revoke at the end they will just update from where they left off. */
- lockrc = mgs_get_cfg_lock(obd, mti->mti_fsname, &lockh);
- if (lockrc != ELDLM_OK) {
- LCONSOLE_ERROR("%s: Can't signal other nodes to update "
- "their configuration (%d). Updating local logs "
- "anyhow; you might have to manually restart "
- "other nodes to get the latest configuration.\n",
- obd->obd_name, lockrc);
- }
-
- /* Log writing contention is handled by the fsdb_sem */
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MGS_PAUSE_TARGET_REG, 10);
if (mti->mti_flags & LDD_F_WRITECONF) {
- if (mti->mti_flags & LDD_F_SV_TYPE_MDT) {
+ if (mti->mti_flags & LDD_F_SV_TYPE_MDT &&
+ mti->mti_stripe_index == 0) {
rc = mgs_erase_logs(obd, mti->mti_fsname);
LCONSOLE_WARN("%s: Logs for fs %s were removed by user "
"request. All servers must be restarted "
"in order to regenerate the logs."
"\n", obd->obd_name, mti->mti_fsname);
- } else if (mti->mti_flags & LDD_F_SV_TYPE_OST) {
+ } else if (mti->mti_flags &
+ (LDD_F_SV_TYPE_OST | LDD_F_SV_TYPE_MDT)) {
rc = mgs_erase_log(obd, mti->mti_svname);
LCONSOLE_WARN("%s: Regenerating %s log by user "
"request.\n",
}
mti->mti_flags |= LDD_F_UPDATE;
/* Erased logs means start from scratch. */
- mti->mti_flags &= ~LDD_F_UPGRADE14;
+ mti->mti_flags &= ~LDD_F_UPGRADE14;
}
+ rc = mgs_find_or_make_fsdb(obd, mti->mti_fsname, &fsdb);
+ if (rc) {
+ CERROR("Can't get db for %s: %d\n", mti->mti_fsname, rc);
+ GOTO(out_nolock, rc);
+ }
+
+ /*
+ * Log writing contention is handled by the fsdb_sem.
+ *
+ * It should be alright if someone was reading while we were
+ * updating the logs - if we revoke at the end they will just update
+ * from where they left off.
+ */
+
/* COMPAT_146 */
if (mti->mti_flags & LDD_F_UPGRADE14) {
- rc = mgs_upgrade_sv_14(obd, mti);
+ rc = mgs_upgrade_sv_14(obd, mti, fsdb);
if (rc) {
CERROR("Can't upgrade from 1.4 (%d)\n", rc);
GOTO(out, rc);
}
-
+
/* We're good to go */
mti->mti_flags |= LDD_F_UPDATE;
}
/* end COMPAT_146 */
if (mti->mti_flags & LDD_F_UPDATE) {
- CDEBUG(D_MGS, "updating %s, index=%d\n", mti->mti_svname,
+ CDEBUG(D_MGS, "updating %s, index=%d\n", mti->mti_svname,
mti->mti_stripe_index);
-
- /* create or update the target log
+
+ /* create or update the target log
and update the client/mdt logs */
- rc = mgs_write_log_target(obd, mti);
+ rc = mgs_write_log_target(obd, mti, fsdb);
if (rc) {
- CERROR("Failed to write %s log (%d)\n",
+ CERROR("Failed to write %s log (%d)\n",
mti->mti_svname, rc);
GOTO(out, rc);
}
- mti->mti_flags &= ~(LDD_F_VIRGIN | LDD_F_UPDATE |
- LDD_F_NEED_INDEX | LDD_F_WRITECONF);
+ mti->mti_flags &= ~(LDD_F_VIRGIN | LDD_F_UPDATE |
+ LDD_F_NEED_INDEX | LDD_F_WRITECONF |
+ LDD_F_UPGRADE14);
mti->mti_flags |= LDD_F_REWRITE_LDD;
}
out:
- /* done with log update */
- if (lockrc == ELDLM_OK)
- mgs_put_cfg_lock(&lockh);
+ mgs_revoke_lock(obd, fsdb);
+
out_nolock:
- CDEBUG(D_MGS, "replying with %s, index=%d, rc=%d\n", mti->mti_svname,
+ CDEBUG(D_MGS, "replying with %s, index=%d, rc=%d\n", mti->mti_svname,
mti->mti_stripe_index, rc);
- lustre_pack_reply(req, 2, rep_size, NULL);
+ req->rq_status = rc;
+ rc = req_capsule_server_pack(&req->rq_pill);
+ if (rc)
+ RETURN(rc);
+
/* send back the whole mti in the reply */
- rep_mti = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
- sizeof(*rep_mti));
- memcpy(rep_mti, mti, sizeof(*rep_mti));
+ rep_mti = req_capsule_server_get(&req->rq_pill, &RMF_MGS_TARGET_INFO);
+ *rep_mti = *mti;
/* Flush logs to disk */
fsfilt_sync(obd, obd->u.mgs.mgs_sb);
RETURN(rc);
}
+static int mgs_set_info_rpc(struct ptlrpc_request *req)
+{
+ struct obd_device *obd = req->rq_export->exp_obd;
+ struct mgs_send_param *msp, *rep_msp;
+ int rc;
+ struct lustre_cfg_bufs bufs;
+ struct lustre_cfg *lcfg;
+ char fsname[MTI_NAME_MAXLEN];
+ ENTRY;
+
+ msp = req_capsule_client_get(&req->rq_pill, &RMF_MGS_SEND_PARAM);
+ LASSERT(msp);
+
+ /* Construct lustre_cfg structure to pass to function mgs_setparam */
+ lustre_cfg_bufs_reset(&bufs, NULL);
+ lustre_cfg_bufs_set_string(&bufs, 1, msp->mgs_param);
+ lcfg = lustre_cfg_new(LCFG_PARAM, &bufs);
+ rc = mgs_setparam(obd, lcfg, fsname);
+ if (rc) {
+ CERROR("Error %d in setting the parameter %s for fs %s\n",
+ rc, msp->mgs_param, fsname);
+ RETURN(rc);
+ }
+
+ lustre_cfg_free(lcfg);
+
+ rc = req_capsule_server_pack(&req->rq_pill);
+ if (rc == 0) {
+ rep_msp = req_capsule_server_get(&req->rq_pill, &RMF_MGS_SEND_PARAM);
+ rep_msp = msp;
+ }
+ RETURN(rc);
+}
+
+/*
+ * similar as in ost_connect_check_sptlrpc()
+ */
+static int mgs_connect_check_sptlrpc(struct ptlrpc_request *req)
+{
+ struct obd_export *exp = req->rq_export;
+ struct obd_device *obd = exp->exp_obd;
+ struct fs_db *fsdb;
+ struct sptlrpc_flavor flvr;
+ int rc = 0;
+
+ if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
+ rc = mgs_find_or_make_fsdb(obd, MGSSELF_NAME, &fsdb);
+ if (rc)
+ return rc;
+
+ cfs_down(&fsdb->fsdb_sem);
+ if (sptlrpc_rule_set_choose(&fsdb->fsdb_srpc_gen,
+ LUSTRE_SP_MGC, LUSTRE_SP_MGS,
+ req->rq_peer.nid,
+ &flvr) == 0) {
+ /* by defualt allow any flavors */
+ flvr.sf_rpc = SPTLRPC_FLVR_ANY;
+ }
+ cfs_up(&fsdb->fsdb_sem);
+
+ cfs_spin_lock(&exp->exp_lock);
+
+ exp->exp_sp_peer = req->rq_sp_from;
+ exp->exp_flvr = flvr;
+
+ if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
+ exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
+ CERROR("invalid rpc flavor %x, expect %x, from %s\n",
+ req->rq_flvr.sf_rpc, exp->exp_flvr.sf_rpc,
+ libcfs_nid2str(req->rq_peer.nid));
+ rc = -EACCES;
+ }
+
+ cfs_spin_unlock(&exp->exp_lock);
+ } else {
+ if (exp->exp_sp_peer != req->rq_sp_from) {
+ CERROR("RPC source %s doesn't match %s\n",
+ sptlrpc_part2name(req->rq_sp_from),
+ sptlrpc_part2name(exp->exp_sp_peer));
+ rc = -EACCES;
+ } else {
+ rc = sptlrpc_target_export_check(exp, req);
+ }
+ }
+
+ return rc;
+}
+
+/* Called whenever a target cleans up. */
+/* XXX - Currently unused */
+static int mgs_handle_target_del(struct ptlrpc_request *req)
+{
+ ENTRY;
+ mgs_counter_incr(req->rq_export, LPROC_MGS_TARGET_DEL);
+ RETURN(0);
+}
+
+/* XXX - Currently unused */
+static int mgs_handle_exception(struct ptlrpc_request *req)
+{
+ ENTRY;
+ mgs_counter_incr(req->rq_export, LPROC_MGS_EXCEPTION);
+ RETURN(0);
+}
+
+/* TODO: handle requests in a similar way as MDT: see mdt_handle_common() */
int mgs_handle(struct ptlrpc_request *req)
{
int fail = OBD_FAIL_MGS_ALL_REPLY_NET;
int opc, rc = 0;
ENTRY;
- OBD_FAIL_TIMEOUT(OBD_FAIL_MGS_SLOW_REQUEST_NET, 2);
- OBD_FAIL_RETURN(OBD_FAIL_MGS_ALL_REQUEST_NET | OBD_FAIL_ONCE, 0);
+ req_capsule_init(&req->rq_pill, req, RCL_SERVER);
+ CFS_FAIL_TIMEOUT_MS(OBD_FAIL_MGS_PAUSE_REQ, cfs_fail_val);
+ if (CFS_FAIL_CHECK(OBD_FAIL_MGS_ALL_REQUEST_NET))
+ RETURN(0);
LASSERT(current->journal_info == NULL);
opc = lustre_msg_get_opc(req->rq_reqmsg);
+
+ if (opc == SEC_CTX_INIT ||
+ opc == SEC_CTX_INIT_CONT ||
+ opc == SEC_CTX_FINI)
+ GOTO(out, rc = 0);
+
if (opc != MGS_CONNECT) {
- if (req->rq_export == NULL) {
+ if (!class_connected_export(req->rq_export)) {
CERROR("lustre_mgs: operation %d on unconnected MGS\n",
opc);
req->rq_status = -ENOTCONN;
switch (opc) {
case MGS_CONNECT:
DEBUG_REQ(D_MGS, req, "connect");
- rc = target_handle_connect(req, mgs_handle);
+ /* MGS and MDS have same request format for connect */
+ req_capsule_set(&req->rq_pill, &RQF_MDS_CONNECT);
+ rc = target_handle_connect(req);
+ if (rc == 0)
+ rc = mgs_connect_check_sptlrpc(req);
+
if (!rc && (lustre_msg_get_conn_cnt(req->rq_reqmsg) > 1))
/* Make clients trying to reconnect after a MGS restart
happy; also requires obd_replayable */
break;
case MGS_DISCONNECT:
DEBUG_REQ(D_MGS, req, "disconnect");
+ /* MGS and MDS have same request format for disconnect */
+ req_capsule_set(&req->rq_pill, &RQF_MDS_DISCONNECT);
rc = target_handle_disconnect(req);
req->rq_status = rc; /* superfluous? */
break;
+ case MGS_EXCEPTION:
+ DEBUG_REQ(D_MGS, req, "exception");
+ rc = mgs_handle_exception(req);
+ break;
case MGS_TARGET_REG:
- DEBUG_REQ(D_MGS, req, "target add\n");
+ DEBUG_REQ(D_MGS, req, "target add");
+ req_capsule_set(&req->rq_pill, &RQF_MGS_TARGET_REG);
rc = mgs_handle_target_reg(req);
break;
case MGS_TARGET_DEL:
- DEBUG_REQ(D_MGS, req, "target del\n");
- //rc = mgs_handle_target_del(req);
+ DEBUG_REQ(D_MGS, req, "target del");
+ rc = mgs_handle_target_del(req);
+ break;
+ case MGS_SET_INFO:
+ DEBUG_REQ(D_MGS, req, "set_info");
+ req_capsule_set(&req->rq_pill, &RQF_MGS_SET_INFO);
+ rc = mgs_set_info_rpc(req);
break;
case LDLM_ENQUEUE:
DEBUG_REQ(D_MGS, req, "enqueue");
+ req_capsule_set(&req->rq_pill, &RQF_LDLM_ENQUEUE);
rc = ldlm_handle_enqueue(req, ldlm_server_completion_ast,
ldlm_server_blocking_ast, NULL);
break;
case OBD_PING:
DEBUG_REQ(D_INFO, req, "ping");
+ req_capsule_set(&req->rq_pill, &RQF_OBD_PING);
rc = target_handle_ping(req);
break;
case OBD_LOG_CANCEL:
- DEBUG_REQ(D_MGS, req, "log cancel\n");
+ DEBUG_REQ(D_MGS, req, "log cancel");
rc = -ENOTSUPP; /* la la la */
break;
case LLOG_ORIGIN_HANDLE_CREATE:
DEBUG_REQ(D_MGS, req, "llog_init");
+ req_capsule_set(&req->rq_pill, &RQF_LLOG_ORIGIN_HANDLE_CREATE);
rc = llog_origin_handle_create(req);
break;
case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
DEBUG_REQ(D_MGS, req, "llog next block");
+ req_capsule_set(&req->rq_pill,
+ &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
rc = llog_origin_handle_next_block(req);
break;
case LLOG_ORIGIN_HANDLE_READ_HEADER:
DEBUG_REQ(D_MGS, req, "llog read header");
+ req_capsule_set(&req->rq_pill,
+ &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
rc = llog_origin_handle_read_header(req);
break;
case LLOG_ORIGIN_HANDLE_CLOSE:
break;
case LLOG_CATINFO:
DEBUG_REQ(D_MGS, req, "llog catinfo");
+ req_capsule_set(&req->rq_pill, &RQF_LLOG_CATINFO);
rc = llog_catinfo(req);
break;
default:
}
LASSERT(current->journal_info == NULL);
-
- if (rc)
+
+ if (rc)
CERROR("MGS handle cmd=%d rc=%d\n", opc, rc);
- out:
+out:
target_send_reply(req, rc, fail);
RETURN(0);
}
+static inline int mgs_init_export(struct obd_export *exp)
+{
+ cfs_spin_lock(&exp->exp_lock);
+ exp->exp_connecting = 1;
+ cfs_spin_unlock(&exp->exp_lock);
+
+ return ldlm_init_export(exp);
+}
+
static inline int mgs_destroy_export(struct obd_export *exp)
{
ENTRY;
target_destroy_export(exp);
+ mgs_client_free(exp);
+ ldlm_destroy_export(exp);
RETURN(0);
}
+static int mgs_extract_fs_pool(char * arg, char *fsname, char *poolname)
+{
+ char *ptr;
+
+ ENTRY;
+ for (ptr = arg; (*ptr != '\0') && (*ptr != '.'); ptr++ ) {
+ *fsname = *ptr;
+ fsname++;
+ }
+ if (*ptr == '\0')
+ return -EINVAL;
+ *fsname = '\0';
+ ptr++;
+ strcpy(poolname, ptr);
+
+ RETURN(0);
+}
+
+static int mgs_iocontrol_pool(struct obd_device *obd,
+ struct obd_ioctl_data *data)
+{
+ int rc;
+ struct lustre_cfg *lcfg = NULL;
+ struct llog_rec_hdr rec;
+ char *fsname = NULL;
+ char *poolname = NULL;
+ ENTRY;
+
+ OBD_ALLOC(fsname, MTI_NAME_MAXLEN);
+ if (fsname == NULL)
+ RETURN(-ENOMEM);
+
+ OBD_ALLOC(poolname, LOV_MAXPOOLNAME + 1);
+ if (poolname == NULL) {
+ rc = -ENOMEM;
+ GOTO(out_pool, rc);
+ }
+ rec.lrh_len = llog_data_len(data->ioc_plen1);
+
+ if (data->ioc_type == LUSTRE_CFG_TYPE) {
+ rec.lrh_type = OBD_CFG_REC;
+ } else {
+ CERROR("unknown cfg record type:%d \n", data->ioc_type);
+ rc = -EINVAL;
+ GOTO(out_pool, rc);
+ }
+
+ if (data->ioc_plen1 > CFS_PAGE_SIZE) {
+ rc = -E2BIG;
+ GOTO(out_pool, rc);
+ }
+
+ OBD_ALLOC(lcfg, data->ioc_plen1);
+ if (lcfg == NULL)
+ GOTO(out_pool, rc = -ENOMEM);
+
+ if (cfs_copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
+ GOTO(out_pool, rc = -EFAULT);
+
+ if (lcfg->lcfg_bufcount < 2) {
+ GOTO(out_pool, rc = -EFAULT);
+ }
+
+ /* first arg is always <fsname>.<poolname> */
+ mgs_extract_fs_pool(lustre_cfg_string(lcfg, 1), fsname,
+ poolname);
+
+ switch (lcfg->lcfg_command) {
+ case LCFG_POOL_NEW: {
+ if (lcfg->lcfg_bufcount != 2)
+ RETURN(-EINVAL);
+ rc = mgs_pool_cmd(obd, LCFG_POOL_NEW, fsname,
+ poolname, NULL);
+ break;
+ }
+ case LCFG_POOL_ADD: {
+ if (lcfg->lcfg_bufcount != 3)
+ RETURN(-EINVAL);
+ rc = mgs_pool_cmd(obd, LCFG_POOL_ADD, fsname, poolname,
+ lustre_cfg_string(lcfg, 2));
+ break;
+ }
+ case LCFG_POOL_REM: {
+ if (lcfg->lcfg_bufcount != 3)
+ RETURN(-EINVAL);
+ rc = mgs_pool_cmd(obd, LCFG_POOL_REM, fsname, poolname,
+ lustre_cfg_string(lcfg, 2));
+ break;
+ }
+ case LCFG_POOL_DEL: {
+ if (lcfg->lcfg_bufcount != 2)
+ RETURN(-EINVAL);
+ rc = mgs_pool_cmd(obd, LCFG_POOL_DEL, fsname,
+ poolname, NULL);
+ break;
+ }
+ default: {
+ rc = -EINVAL;
+ GOTO(out_pool, rc);
+ }
+ }
+
+ if (rc) {
+ CERROR("OBD_IOC_POOL err %d, cmd %X for pool %s.%s\n",
+ rc, lcfg->lcfg_command, fsname, poolname);
+ GOTO(out_pool, rc);
+ }
+
+out_pool:
+ if (lcfg != NULL)
+ OBD_FREE(lcfg, data->ioc_plen1);
+
+ if (fsname != NULL)
+ OBD_FREE(fsname, MTI_NAME_MAXLEN);
+
+ if (poolname != NULL)
+ OBD_FREE(poolname, LOV_MAXPOOLNAME + 1);
+
+ RETURN(rc);
+}
+
/* from mdt_iocontrol */
int mgs_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
void *karg, void *uarg)
switch (cmd) {
case OBD_IOC_PARAM: {
- struct lustre_handle lockh;
struct lustre_cfg *lcfg;
struct llog_rec_hdr rec;
char fsname[MTI_NAME_MAXLEN];
- int lockrc;
rec.lrh_len = llog_data_len(data->ioc_plen1);
OBD_ALLOC(lcfg, data->ioc_plen1);
if (lcfg == NULL)
RETURN(-ENOMEM);
- rc = copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1);
- if (rc)
- GOTO(out_free, rc);
+ if (cfs_copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
+ GOTO(out_free, rc = -EFAULT);
if (lcfg->lcfg_bufcount < 1)
GOTO(out_free, rc = -EINVAL);
CERROR("setparam err %d\n", rc);
GOTO(out_free, rc);
}
-
- /* Revoke lock so everyone updates. Should be alright if
- someone was already reading while we were updating the logs,
- so we don't really need to hold the lock while we're
- writing (above). */
- if (fsname[0]) {
- lockrc = mgs_get_cfg_lock(obd, fsname, &lockh);
- if (lockrc != ELDLM_OK)
- CERROR("lock error %d for fs %s\n", lockrc,
- fsname);
- else
- mgs_put_cfg_lock(&lockh);
- }
-
out_free:
OBD_FREE(lcfg, data->ioc_plen1);
RETURN(rc);
}
+ case OBD_IOC_POOL: {
+ RETURN(mgs_iocontrol_pool(obd, data));
+ }
+
case OBD_IOC_DUMP_LOG: {
- struct llog_ctxt *ctxt =
- llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
+ struct llog_ctxt *ctxt;
+ ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
rc = class_config_dump_llog(ctxt, data->ioc_inlbuf1, NULL);
pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
- if (rc)
- RETURN(rc);
+ llog_ctxt_put(ctxt);
RETURN(rc);
}
case OBD_IOC_LLOG_CHECK:
case OBD_IOC_LLOG_INFO:
case OBD_IOC_LLOG_PRINT: {
- struct llog_ctxt *ctxt =
- llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
+ struct llog_ctxt *ctxt;
+ ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
push_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
rc = llog_ioctl(ctxt, cmd, data);
pop_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
+ llog_ctxt_put(ctxt);
RETURN(rc);
}
static struct obd_ops mgs_obd_ops = {
.o_owner = THIS_MODULE,
.o_connect = mgs_connect,
+ .o_reconnect = mgs_reconnect,
.o_disconnect = mgs_disconnect,
.o_setup = mgs_setup,
.o_precleanup = mgs_precleanup,
.o_cleanup = mgs_cleanup,
+ .o_init_export = mgs_init_export,
.o_destroy_export = mgs_destroy_export,
.o_iocontrol = mgs_iocontrol,
+ .o_llog_init = mgs_llog_init,
+ .o_llog_finish = mgs_llog_finish
};
static int __init mgs_init(void)
{
struct lprocfs_static_vars lvars;
- lprocfs_init_vars(mgs, &lvars);
- class_register_type(&mgs_obd_ops, lvars.module_vars, LUSTRE_MGS_NAME);
+ lprocfs_mgs_init_vars(&lvars);
+ class_register_type(&mgs_obd_ops, NULL,
+ lvars.module_vars, LUSTRE_MGS_NAME, NULL);
return 0;
}
class_unregister_type(LUSTRE_MGS_NAME);
}
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
+MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("Lustre Management Server (MGS)");
MODULE_LICENSE("GPL");
git://git.whamcloud.com / fs / lustre-release.git / blobdiff