/* -*- 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 [sun.com URL with a
+ * copy of GPLv2].
*
- * 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 2008 Sun Microsystems, Inc. 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
#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"
/* Establish a connection to the MGS.*/
static int mgs_connect(const struct lu_env *env,
struct lustre_handle *conn, struct obd_device *obd,
- struct obd_uuid *cluuid, struct obd_connect_data *data)
+ struct obd_uuid *cluuid, struct obd_connect_data *data,
+ void *localdata)
{
struct obd_export *exp;
int rc;
exp = class_conn2export(conn);
LASSERT(exp);
+ exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_NULL;
+
+ 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;
ENTRY;
LASSERT(exp);
+
class_export_get(exp);
+ mgs_counter_incr(exp, LPROC_MGS_DISCONNECT);
/* Disconnect early so that clients can't keep using export */
rc = class_disconnect(exp);
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 count,
+ struct llog_catid *logid, struct obd_uuid *uuid)
+{
+ 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, struct lustre_cfg *lcfg)
{
GOTO(err_put, rc = PTR_ERR(obd->obd_fsops));
/* namespace for mgs llog */
- obd->obd_namespace = ldlm_namespace_new("MGS", LDLM_NAMESPACE_SERVER,
+ obd->obd_namespace = ldlm_namespace_new(obd ,"MGS", LDLM_NAMESPACE_SERVER,
LDLM_NAMESPACE_MODEST);
if (obd->obd_namespace == NULL)
GOTO(err_ops, rc = -ENOMEM);
GOTO(err_ns, rc);
}
- rc = llog_start_commit_thread();
- if (rc < 0)
- GOTO(err_fs, rc);
-
- rc = llog_setup(obd, NULL, LLOG_CONFIG_ORIG_CTXT, obd, 0, NULL,
- &llog_lvfs_ops);
+ rc = obd_llog_init(obd, &obd->obd_olg, obd, 0, NULL, NULL);
if (rc)
GOTO(err_fs, rc);
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, 2000,
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", LCT_MD_THREAD);
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);
GOTO(err_thread, rc);
/* Setup proc */
- lprocfs_init_vars(mgs, &lvars);
+ lprocfs_mgs_init_vars(&lvars);
if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0) {
lproc_mgs_setup(obd);
}
err_thread:
ptlrpc_unregister_service(mgs->mgs_service);
+err_llog:
+ 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;
ptlrpc_unregister_service(mgs->mgs_service);
mgs_cleanup_fsdb_list(obd);
-
- lprocfs_obd_cleanup(obd);
- mgs->mgs_proc_live = NULL;
-
+ 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);
+ rc = mgc_fsname2resid(fsname, &res_id);
if (!rc)
rc = ldlm_cli_enqueue_local(obd->obd_namespace, &res_id,
LDLM_PLAIN, NULL, LCK_EX,
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;
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_WRITECONF | LDD_F_UPGRADE14 |
LDD_F_UPDATE))) {
/* We're just here as a startup ping. */
obd->obd_name, lockrc);
}
- OBD_FAIL_TIMEOUT(OBD_FAIL_MGS_SLOW_TARGET_REG, 10);
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MGS_PAUSE_TARGET_REG, 10);
/* Log writing contention is handled by the fsdb_sem */
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",
out_nolock:
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);
+ 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;
+ struct lustre_handle lockh;
+ int lockrc, 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);
+ }
+
+ /* 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.
+ */
+ 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);
+ }
+ 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);
+}
+
+/* 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);
+ req_capsule_init(&req->rq_pill, req, RCL_SERVER);
+ OBD_FAIL_TIMEOUT_MS(OBD_FAIL_MGS_PAUSE_REQ, obd_fail_val);
+ if (OBD_FAIL_CHECK(OBD_FAIL_MGS_ALL_REQUEST_NET))
+ RETURN(0);
LASSERT(current->journal_info == NULL);
opc = lustre_msg_get_opc(req->rq_reqmsg);
switch (opc) {
case MGS_CONNECT:
DEBUG_REQ(D_MGS, req, "connect");
+ /* 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 && (lustre_msg_get_conn_cnt(req->rq_reqmsg) > 1))
/* Make clients trying to reconnect after a MGS restart
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");
+ 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");
- //rc = mgs_handle_target_del(req);
+ 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:
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:
}
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);
}
.o_cleanup = mgs_cleanup,
.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);
+ lprocfs_mgs_init_vars(&lvars);
class_register_type(&mgs_obd_ops, NULL,
lvars.module_vars, LUSTRE_MGS_NAME, NULL);
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