-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2010, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* lustre/mgs/mgs_handler.c
*
* Author: Nathan Rutman <nathan@clusterfs.com>
+ * Author: Alex Zhuravlev <bzzz@whamcloud.com>
+ * Author: Mikhail Pershin <tappro@whamcloud.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_MGS
-#define D_MGS D_CONFIG/*|D_WARNING*/
-
-#ifdef __KERNEL__
-# include <linux/module.h>
-# include <linux/pagemap.h>
-# include <linux/miscdevice.h>
-# include <linux/init.h>
-#else
-# include <liblustre.h>
-#endif
+#define D_MGS D_CONFIG
#include <obd_class.h>
-#include <lustre_dlm.h>
#include <lprocfs_status.h>
-#include <lustre_fsfilt.h>
-#include <lustre_disk.h>
-#include "mgs_internal.h"
+#include <lustre_param.h>
+#include "mgs_internal.h"
-/* Establish a connection to the MGS.*/
-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)
+/*
+ * Regular MGS handlers
+ */
+static int mgs_connect(struct tgt_session_info *tsi)
{
- struct obd_export *lexp;
- struct lustre_handle conn = { 0 };
- int rc;
- ENTRY;
-
- if (!exp || !obd || !cluuid)
- RETURN(-EINVAL);
+ struct ptlrpc_request *req = tgt_ses_req(tsi);
+ int rc;
- rc = class_connect(&conn, obd, cluuid);
- if (rc)
- RETURN(rc);
+ ENTRY;
- lexp = class_conn2export(&conn);
- LASSERT(lexp);
+ rc = tgt_connect(tsi);
+ if (rc)
+ RETURN(rc);
- mgs_counter_incr(lexp, LPROC_MGS_CONNECT);
+ if (lustre_msg_get_conn_cnt(req->rq_reqmsg) > 1)
+ lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECONNECT);
- if (data != NULL) {
- data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED;
- lexp->exp_connect_flags = data->ocd_connect_flags;
- data->ocd_version = LUSTRE_VERSION_CODE;
- }
-
- rc = mgs_client_add(obd, lexp, localdata);
-
- if (rc) {
- class_disconnect(lexp);
- } else {
- *exp = lexp;
- }
-
- RETURN(rc);
+ RETURN(0);
}
-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)
+static int mgs_disconnect(struct tgt_session_info *tsi)
{
- ENTRY;
-
- if (exp == NULL || obd == NULL || cluuid == NULL)
- RETURN(-EINVAL);
+ int rc;
- mgs_counter_incr(exp, LPROC_MGS_CONNECT);
+ ENTRY;
- if (data != NULL) {
- data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED;
- exp->exp_connect_flags = data->ocd_connect_flags;
- data->ocd_version = LUSTRE_VERSION_CODE;
- }
+ LASSERT(tsi->tsi_exp);
- RETURN(0);
+ rc = tgt_disconnect(tsi);
+ if (rc)
+ RETURN(err_serious(rc));
+ RETURN(0);
}
-static int mgs_disconnect(struct obd_export *exp)
+static int mgs_exception(struct tgt_session_info *tsi)
{
- int rc;
- ENTRY;
-
- LASSERT(exp);
-
- class_export_get(exp);
- mgs_counter_incr(exp, LPROC_MGS_DISCONNECT);
+ ENTRY;
- /* Disconnect early so that clients can't keep using export */
- rc = class_disconnect(exp);
- ldlm_cancel_locks_for_export(exp);
+ tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_EXCEPTION);
- lprocfs_exp_cleanup(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;
-
- spin_lock(&svc->srv_lock);
- list_del_init(&rs->rs_exp_list);
- spin_lock(&rs->rs_lock);
- ptlrpc_schedule_difficult_reply(rs);
- spin_unlock(&rs->rs_lock);
- spin_unlock(&svc->srv_lock);
- }
- spin_unlock(&exp->exp_lock);
-
- class_export_put(exp);
- RETURN(rc);
+ RETURN(0);
}
-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)
+static int mgs_set_info(struct tgt_session_info *tsi)
{
- 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);
+ struct mgs_thread_info *mgi;
+ struct mgs_send_param *msp, *rep_msp;
+ struct lustre_cfg *lcfg;
+ int rc;
+
+ ENTRY;
+
+ mgi = mgs_env_info(tsi->tsi_env);
+ if (IS_ERR(mgi))
+ RETURN(err_serious(PTR_ERR(mgi)));
+
+ msp = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_SEND_PARAM);
+ if (msp == NULL)
+ RETURN(err_serious(-EFAULT));
+
+ /* Construct lustre_cfg structure to pass to function mgs_setparam */
+ lustre_cfg_bufs_reset(&mgi->mgi_bufs, NULL);
+ lustre_cfg_bufs_set_string(&mgi->mgi_bufs, 1, msp->mgs_param);
+ lcfg = lustre_cfg_new(LCFG_PARAM, &mgi->mgi_bufs);
+
+ rc = mgs_setparam(tsi->tsi_env, exp2mgs_dev(tsi->tsi_exp), lcfg,
+ mgi->mgi_fsname);
+ if (rc) {
+ LCONSOLE_WARN("%s: Unable to set parameter %s for %s: %d\n",
+ tgt_name(tsi->tsi_tgt), msp->mgs_param,
+ mgi->mgi_fsname, rc);
+ GOTO(out_cfg, rc);
+ }
+
+ /* send back the whole msp in the reply */
+ rep_msp = req_capsule_server_get(tsi->tsi_pill, &RMF_MGS_SEND_PARAM);
+ *rep_msp = *msp;
+ EXIT;
+out_cfg:
+ lustre_cfg_free(lcfg);
+ 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)
-{
- struct lprocfs_static_vars lvars;
- struct mgs_obd *mgs = &obd->u.mgs;
- struct lustre_mount_info *lmi;
- struct lustre_sb_info *lsi;
- struct vfsmount *mnt;
- int rc = 0;
- ENTRY;
-
- CDEBUG(D_CONFIG, "Starting MGS\n");
-
- /* Find our disk */
- lmi = server_get_mount(obd->obd_name);
- if (!lmi)
- RETURN(rc = -EINVAL);
-
- mnt = lmi->lmi_mnt;
- lsi = s2lsi(lmi->lmi_sb);
- obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
- if (IS_ERR(obd->obd_fsops))
- GOTO(err_put, rc = PTR_ERR(obd->obd_fsops));
-
- /* namespace for mgs llog */
- obd->obd_namespace = ldlm_namespace_new(obd ,"MGS", LDLM_NAMESPACE_SERVER,
- LDLM_NAMESPACE_MODEST);
- 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);
-
- 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);
- }
-
- rc = mgs_fs_setup(obd, mnt);
- if (rc) {
- CERROR("%s: MGS filesystem method init failed: rc = %d\n",
- obd->obd_name, rc);
- GOTO(err_ns, rc);
- }
-
- rc = obd_llog_init(obd, &obd->obd_olg, obd, 0, NULL, NULL);
- if (rc)
- GOTO(err_fs, rc);
-
- /* No recovery for MGC's */
- obd->obd_replayable = 0;
-
- /* Internal mgs setup */
- mgs_init_fsdb_list(obd);
- sema_init(&mgs->mgs_sem, 1);
-
- /* Start the service threads */
- mgs->mgs_service =
- ptlrpc_init_svc(MGS_NBUFS, MGS_BUFSIZE, MGS_MAXREQSIZE,
- MGS_MAXREPSIZE, MGS_REQUEST_PORTAL,
- MGC_REPLY_PORTAL, 2000,
- mgs_handle, LUSTRE_MGS_NAME,
- obd->obd_proc_entry, target_print_req,
- MGS_THREADS_AUTO_MIN, MGS_THREADS_AUTO_MAX,
- "ll_mgs", LCT_MD_THREAD, NULL);
-
- if (!mgs->mgs_service) {
- CERROR("failed to start service\n");
- GOTO(err_llog, rc = -ENOMEM);
- }
-
- rc = ptlrpc_start_threads(obd, mgs->mgs_service);
- if (rc)
- GOTO(err_thread, rc);
-
- /* Setup proc */
- lprocfs_mgs_init_vars(&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);
-
- RETURN(0);
-
-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, NULL, 0);
- obd->obd_namespace = NULL;
-err_ops:
- fsfilt_put_ops(obd->obd_fsops);
-err_put:
- server_put_mount(obd->obd_name, mnt);
- mgs->mgs_sb = 0;
- return rc;
-}
+enum ast_type {
+ AST_CONFIG = 1,
+ AST_PARAMS = 2,
+ AST_IR = 3
+};
-static int mgs_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
+static int mgs_completion_ast_generic(struct ldlm_lock *lock, __u64 flags,
+ void *cbdata, enum ast_type type)
{
- int rc = 0;
- ENTRY;
-
- switch (stage) {
- case OBD_CLEANUP_EARLY:
- case OBD_CLEANUP_EXPORTS:
- rc = obd_llog_finish(obd, 0);
- break;
- }
- RETURN(rc);
+ ENTRY;
+
+ if (!(flags & (LDLM_FL_BLOCK_WAIT | LDLM_FL_BLOCK_GRANTED |
+ LDLM_FL_BLOCK_CONV))) {
+ struct fs_db *fsdb;
+
+ /* l_ast_data is used as a marker to avoid cancel ldlm lock
+ * twice. See LU-2317. */
+ lock_res_and_lock(lock);
+ fsdb = (struct fs_db *)lock->l_ast_data;
+ lock->l_ast_data = NULL;
+ unlock_res_and_lock(lock);
+
+ if (fsdb != NULL) {
+ struct lustre_handle lockh;
+
+ switch(type) {
+ case AST_CONFIG:
+ /* clear the bit before lock put */
+ clear_bit(FSDB_REVOKING_LOCK,
+ &fsdb->fsdb_flags);
+ break;
+ case AST_PARAMS:
+ clear_bit(FSDB_REVOKING_PARAMS,
+ &fsdb->fsdb_flags);
+ break;
+ case AST_IR:
+ mgs_ir_notify_complete(fsdb);
+ break;
+ default:
+ LBUG();
+ }
+
+ ldlm_lock2handle(lock, &lockh);
+ ldlm_lock_decref_and_cancel(&lockh, LCK_EX);
+ }
+ }
+
+ RETURN(ldlm_completion_ast(lock, flags, cbdata));
}
-/**
- * Performs cleanup procedures for passed \a obd given it is mgs obd.
- */
-static int mgs_cleanup(struct obd_device *obd)
+static int mgs_completion_ast_config(struct ldlm_lock *lock, __u64 flags,
+ void *cbdata)
{
- struct mgs_obd *mgs = &obd->u.mgs;
- ENTRY;
-
- if (mgs->mgs_sb == NULL)
- RETURN(0);
-
- ping_evictor_stop();
-
- 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;
-
- ldlm_namespace_free(obd->obd_namespace, NULL, 1);
- obd->obd_namespace = NULL;
-
- fsfilt_put_ops(obd->obd_fsops);
-
- LCONSOLE_INFO("%s has stopped.\n", obd->obd_name);
- RETURN(0);
+ return mgs_completion_ast_generic(lock, flags, cbdata, AST_CONFIG);
}
-/* similar to filter_prepare_destroy */
-static int mgs_get_cfg_lock(struct obd_device *obd, char *fsname,
- struct lustre_handle *lockh)
+static int mgs_completion_ast_params(struct ldlm_lock *lock, __u64 flags,
+ void *cbdata)
{
- struct ldlm_res_id res_id;
- int rc, flags = 0;
- ENTRY;
-
- rc = mgc_fsname2resid(fsname, &res_id);
- 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, NULL, lockh);
- if (rc)
- CERROR("can't take cfg lock for %s (%d)\n", fsname, rc);
-
- RETURN(rc);
+ return mgs_completion_ast_generic(lock, flags, cbdata, AST_PARAMS);
}
-static int mgs_put_cfg_lock(struct lustre_handle *lockh)
+static int mgs_completion_ast_ir(struct ldlm_lock *lock, __u64 flags,
+ void *cbdata)
{
- ENTRY;
- ldlm_lock_decref(lockh, LCK_EX);
- RETURN(0);
+ return mgs_completion_ast_generic(lock, flags, cbdata, AST_IR);
}
-static void mgs_revoke_lock(struct obd_device *obd, char *fsname,
- struct lustre_handle *lockh)
+void mgs_revoke_lock(struct mgs_device *mgs, struct fs_db *fsdb, int type)
{
- int lockrc;
-
- 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);
- }
+ ldlm_completion_callback cp = NULL;
+ struct lustre_handle lockh = { 0 };
+ struct ldlm_res_id res_id;
+ __u64 flags = LDLM_FL_ATOMIC_CB;
+ int rc;
+ ENTRY;
+
+ LASSERT(fsdb->fsdb_name[0] != '\0');
+ rc = mgc_fsname2resid(fsdb->fsdb_name, &res_id, type);
+ LASSERT(rc == 0);
+ switch (type) {
+ case CONFIG_T_CONFIG:
+ cp = mgs_completion_ast_config;
+ if (test_and_set_bit(FSDB_REVOKING_LOCK, &fsdb->fsdb_flags))
+ rc = -EALREADY;
+ break;
+ case CONFIG_T_PARAMS:
+ cp = mgs_completion_ast_params;
+ if (test_and_set_bit(FSDB_REVOKING_PARAMS, &fsdb->fsdb_flags))
+ rc = -EALREADY;
+ break;
+ case CONFIG_T_RECOVER:
+ cp = mgs_completion_ast_ir;
+ default:
+ break;
+ }
+
+ if (!rc) {
+ LASSERT(cp != NULL);
+ rc = ldlm_cli_enqueue_local(mgs->mgs_obd->obd_namespace,
+ &res_id, LDLM_PLAIN, NULL, LCK_EX,
+ &flags, ldlm_blocking_ast, cp,
+ NULL, fsdb, 0, LVB_T_NONE, NULL,
+ &lockh);
+ if (rc != ELDLM_OK) {
+ CERROR("can't take cfg lock for "LPX64"/"LPX64"(%d)\n",
+ le64_to_cpu(res_id.name[0]),
+ le64_to_cpu(res_id.name[1]), rc);
+
+ if (type == CONFIG_T_CONFIG)
+ clear_bit(FSDB_REVOKING_LOCK,
+ &fsdb->fsdb_flags);
+
+ if (type == CONFIG_T_PARAMS)
+ clear_bit(FSDB_REVOKING_PARAMS,
+ &fsdb->fsdb_flags);
+ }
+ /* lock has been cancelled in completion_ast. */
+ }
+
+ RETURN_EXIT;
}
/* rc=0 means ok
1 means update
<0 means error */
-static int mgs_check_target(struct obd_device *obd, struct mgs_target_info *mti)
+static int mgs_check_target(const struct lu_env *env,
+ struct mgs_device *mgs,
+ struct mgs_target_info *mti)
{
int rc;
ENTRY;
- rc = mgs_check_index(obd, mti);
+ rc = mgs_check_index(env, mgs, mti);
if (rc == 0) {
LCONSOLE_ERROR_MSG(0x13b, "%s claims to have registered, but "
"this MGS does not know about it, preventing "
/* If the logs don't contain the mti_nids then add
them as failover nids */
- rc = mgs_check_failnid(obd, mti);
+ rc = mgs_check_failnid(env, mgs, 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_quiet(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)
+static int mgs_target_reg(struct tgt_session_info *tsi)
{
- struct obd_device *obd = req->rq_export->exp_obd;
- struct lustre_handle lockh;
- struct mgs_target_info *mti, *rep_mti;
- int rc = 0, lockrc;
- ENTRY;
+ struct obd_device *obd = tsi->tsi_exp->exp_obd;
+ struct mgs_device *mgs = exp2mgs_dev(tsi->tsi_exp);
+ struct mgs_target_info *mti, *rep_mti;
+ struct fs_db *fsdb;
+ int opc;
+ int rc = 0;
+
+ ENTRY;
+
+ rc = lu_env_refill((struct lu_env *)tsi->tsi_env);
+ if (rc)
+ return err_serious(rc);
+
+ tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_TARGET_REG);
+
+ mti = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_TARGET_INFO);
+ if (mti == NULL) {
+ DEBUG_REQ(D_HA, tgt_ses_req(tsi), "no mgs_send_param");
+ RETURN(err_serious(-EFAULT));
+ }
+
+ if (OCD_HAS_FLAG(&tgt_ses_req(tsi)->rq_export->exp_connect_data,
+ IMP_RECOV))
+ opc = mti->mti_flags & LDD_F_OPC_MASK;
+ else
+ opc = LDD_F_OPC_REG;
+
+ if (opc == LDD_F_OPC_READY) {
+ CDEBUG(D_MGS, "fs: %s index: %d is ready to reconnect.\n",
+ mti->mti_fsname, mti->mti_stripe_index);
+ rc = mgs_ir_update(tsi->tsi_env, mgs, mti);
+ if (rc) {
+ LASSERT(!(mti->mti_flags & LDD_F_IR_CAPABLE));
+ CERROR("Update IR return with %d(ignore and IR "
+ "disabled)\n", rc);
+ }
+ GOTO(out_nolock, rc);
+ }
+
+ /* Do not support unregistering right now. */
+ if (opc != LDD_F_OPC_REG)
+ GOTO(out_nolock, rc = -EINVAL);
+
+ CDEBUG(D_MGS, "fs: %s index: %d is registered to MGS.\n",
+ mti->mti_fsname, mti->mti_stripe_index);
- mgs_counter_incr(req->rq_export, LPROC_MGS_TARGET_REG);
+ if (mti->mti_flags & LDD_F_NEED_INDEX)
+ mti->mti_flags |= LDD_F_WRITECONF;
- 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. */
CDEBUG(D_MGS, "Server %s is running on %s\n",
- mti->mti_svname, obd_export_nid2str(req->rq_export));
- rc = mgs_check_target(obd, mti);
+ mti->mti_svname, obd_export_nid2str(tsi->tsi_exp));
+ rc = mgs_check_target(tsi->tsi_env, mgs, mti);
/* above will set appropriate mti flags */
if (rc <= 0)
/* Nothing wrong, or fatal error */
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_MSG(0x13d, "%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);
+ } else if (!(mti->mti_flags & LDD_F_NO_PRIMNODE)) {
+ rc = mgs_check_failover_reg(mti);
+ if (rc)
+ GOTO(out_nolock, rc);
}
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 &&
mti->mti_stripe_index == 0) {
- rc = mgs_erase_logs(obd, mti->mti_fsname);
+ rc = mgs_erase_logs(tsi->tsi_env, mgs,
+ 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 | LDD_F_SV_TYPE_MDT)) {
- rc = mgs_erase_log(obd, mti->mti_svname);
+ rc = mgs_erase_log(tsi->tsi_env, mgs, mti->mti_svname);
LCONSOLE_WARN("%s: Regenerating %s log by user "
"request.\n",
obd->obd_name, mti->mti_svname);
mti->mti_flags |= LDD_F_UPDATE;
/* Erased logs means start from scratch. */
mti->mti_flags &= ~LDD_F_UPGRADE14;
+ if (rc)
+ GOTO(out_nolock, rc);
}
- /* COMPAT_146 */
- if (mti->mti_flags & LDD_F_UPGRADE14) {
- rc = mgs_upgrade_sv_14(obd, mti);
- 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;
+ rc = mgs_find_or_make_fsdb(tsi->tsi_env, mgs, mti->mti_fsname, &fsdb);
+ if (rc) {
+ CERROR("Can't get db for %s: %d\n", mti->mti_fsname, rc);
+ GOTO(out_nolock, rc);
}
- /* end COMPAT_146 */
+
+ /*
+ * Log writing contention is handled by the fsdb_mutex.
+ *
+ * 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.
+ */
+
+ if (mti->mti_flags & LDD_F_UPGRADE14) {
+ CERROR("Can't upgrade from 1.4 (%d)\n", rc);
+ GOTO(out, rc);
+ }
if (mti->mti_flags & LDD_F_UPDATE) {
CDEBUG(D_MGS, "updating %s, index=%d\n", mti->mti_svname,
/* create or update the target log
and update the client/mdt logs */
- rc = mgs_write_log_target(obd, mti);
+ rc = mgs_write_log_target(tsi->tsi_env, mgs, mti, fsdb);
if (rc) {
CERROR("Failed to write %s log (%d)\n",
mti->mti_svname, rc);
}
out:
- /* done with log update */
- if (lockrc == ELDLM_OK)
- mgs_put_cfg_lock(&lockh);
-out_nolock:
- CDEBUG(D_MGS, "replying with %s, index=%d, rc=%d\n", mti->mti_svname,
- mti->mti_stripe_index, rc);
- rc = req_capsule_server_pack(&req->rq_pill);
- if (rc)
- RETURN(rc);
-
- /* send back the whole mti in the reply */
- 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);
-}
+ mgs_revoke_lock(mgs, fsdb, CONFIG_T_CONFIG);
-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 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);
- }
-
- /* request for update */
- mgs_revoke_lock(obd, fsname, &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);
+out_nolock:
+ CDEBUG(D_MGS, "replying with %s, index=%d, rc=%d\n", mti->mti_svname,
+ mti->mti_stripe_index, rc);
+ /* An error flag is set in the mti reply rather than an error code */
+ if (rc)
+ mti->mti_flags |= LDD_F_ERROR;
+
+ /* send back the whole mti in the reply */
+ rep_mti = req_capsule_server_get(tsi->tsi_pill, &RMF_MGS_TARGET_INFO);
+ *rep_mti = *mti;
+
+ /* Flush logs to disk */
+ dt_sync(tsi->tsi_env, mgs->mgs_bottom);
+ RETURN(rc);
}
-/*
- * similar as in ost_connect_check_sptlrpc()
- */
-static int mgs_connect_check_sptlrpc(struct ptlrpc_request *req)
+/* Called whenever a target cleans up. */
+static int mgs_target_del(struct tgt_session_info *tsi)
{
- 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;
-
- 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;
- }
- up(&fsdb->fsdb_sem);
-
- spin_lock(&exp->exp_lock);
+ ENTRY;
- exp->exp_sp_peer = req->rq_sp_from;
- exp->exp_flvr = flvr;
+ tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_TARGET_DEL);
- 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;
- }
-
- 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;
+ RETURN(0);
}
-/* Called whenever a target cleans up. */
-/* XXX - Currently unused */
-static int mgs_handle_target_del(struct ptlrpc_request *req)
+static int mgs_config_read(struct tgt_session_info *tsi)
{
- ENTRY;
- mgs_counter_incr(req->rq_export, LPROC_MGS_TARGET_DEL);
- RETURN(0);
+ struct ptlrpc_request *req = tgt_ses_req(tsi);
+ struct mgs_config_body *body;
+ int rc;
+
+ ENTRY;
+
+ body = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_CONFIG_BODY);
+ if (body == NULL) {
+ DEBUG_REQ(D_HA, req, "no mgs_config_body");
+ RETURN(err_serious(-EFAULT));
+ }
+
+ switch (body->mcb_type) {
+ case CONFIG_T_RECOVER:
+ rc = mgs_get_ir_logs(req);
+ break;
+ case CONFIG_T_CONFIG:
+ rc = -EOPNOTSUPP;
+ break;
+ default:
+ rc = -EINVAL;
+ break;
+ }
+
+ RETURN(rc);
}
-/* XXX - Currently unused */
-static int mgs_handle_exception(struct ptlrpc_request *req)
+static int mgs_llog_open(struct tgt_session_info *tsi)
{
- ENTRY;
- mgs_counter_incr(req->rq_export, LPROC_MGS_EXCEPTION);
- RETURN(0);
+ struct mgs_thread_info *mgi;
+ struct ptlrpc_request *req = tgt_ses_req(tsi);
+ char *logname;
+ int rc;
+
+ ENTRY;
+
+ rc = tgt_llog_open(tsi);
+ if (rc)
+ RETURN(rc);
+
+ /*
+ * For old clients there is no direct way of knowing which file system
+ * a client is operating at the MGS side. But we need to pick up those
+ * clients so that the MGS can mark the corresponding file system as
+ * non-IR capable because old clients are not ready to be notified.
+ *
+ * Therefore we attempt to detect the file systems name by hacking the
+ * llog operation which is currently used by the clients to fetch
+ * configuration logs. At present this is fine because this is the
+ * ONLY llog operation between mgc and the MGS.
+ *
+ * If extra llog operation are going to be added, this function needs
+ * further work.
+ *
+ * When releases prior than 2.0 are not supported, the following code
+ * can be removed.
+ */
+ mgi = mgs_env_info(tsi->tsi_env);
+ if (IS_ERR(mgi))
+ RETURN(PTR_ERR(mgi));
+
+ logname = req_capsule_client_get(tsi->tsi_pill, &RMF_NAME);
+ if (logname) {
+ char *ptr = strchr(logname, '-');
+ int len = (int)(ptr - logname);
+
+ if (ptr == NULL || len >= sizeof(mgi->mgi_fsname)) {
+ LCONSOLE_WARN("%s: non-config logname received: %s\n",
+ tgt_name(tsi->tsi_tgt), logname);
+ /* not error, this can be llog test name */
+ } else {
+ strncpy(mgi->mgi_fsname, logname, len);
+ mgi->mgi_fsname[len] = 0;
+
+ rc = mgs_fsc_attach(tsi->tsi_env, tsi->tsi_exp,
+ mgi->mgi_fsname);
+ if (rc && rc != -EEXIST) {
+ LCONSOLE_WARN("%s: Unable to add client %s "
+ "to file system %s: %d\n",
+ tgt_name(tsi->tsi_tgt),
+ libcfs_nid2str(req->rq_peer.nid),
+ mgi->mgi_fsname, rc);
+ } else {
+ rc = 0;
+ }
+ }
+ } else {
+ CERROR("%s: no logname in request\n", tgt_name(tsi->tsi_tgt));
+ RETURN(-EINVAL);
+ }
+ RETURN(rc);
}
-/* TODO: handle requests in a similar way as MDT: see mdt_handle_common() */
-int mgs_handle(struct ptlrpc_request *req)
+static inline int mgs_init_export(struct obd_export *exp)
{
- int fail = OBD_FAIL_MGS_ALL_REPLY_NET;
- int opc, rc = 0;
- ENTRY;
-
- 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);
-
- 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) {
- CERROR("lustre_mgs: operation %d on unconnected MGS\n",
- opc);
- req->rq_status = -ENOTCONN;
- GOTO(out, rc = -ENOTCONN);
- }
- }
-
- 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 == 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 */
- lustre_msg_add_op_flags(req->rq_repmsg,
- MSG_CONNECT_RECONNECT);
- 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);
- 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;
+ struct mgs_export_data *data = &exp->u.eu_mgs_data;
- 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 LDLM_BL_CALLBACK:
- case LDLM_CP_CALLBACK:
- DEBUG_REQ(D_MGS, req, "callback");
- CERROR("callbacks should not happen on MGS\n");
- LBUG();
- break;
+ /* init mgs_export_data for fsc */
+ spin_lock_init(&data->med_lock);
+ CFS_INIT_LIST_HEAD(&data->med_clients);
- 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");
- 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:
- DEBUG_REQ(D_MGS, req, "llog close");
- rc = llog_origin_handle_close(req);
- 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:
- req->rq_status = -ENOTSUPP;
- rc = ptlrpc_error(req);
- RETURN(rc);
- }
-
- LASSERT(current->journal_info == NULL);
-
- if (rc)
- CERROR("MGS handle cmd=%d rc=%d\n", opc, rc);
-
-out:
- target_send_reply(req, rc, fail);
- RETURN(0);
-}
+ spin_lock(&exp->exp_lock);
+ exp->exp_connecting = 1;
+ spin_unlock(&exp->exp_lock);
-static inline int mgs_init_export(struct obd_export *exp)
-{
+ /* self-export doesn't need client data and ldlm initialization */
+ if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
+ &exp->exp_client_uuid)))
+ return 0;
return ldlm_init_export(exp);
}
target_destroy_export(exp);
mgs_client_free(exp);
+
+ if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
+ &exp->exp_client_uuid)))
+ RETURN(0);
+
ldlm_destroy_export(exp);
RETURN(0);
RETURN(0);
}
-static int mgs_iocontrol_pool(struct obd_device *obd,
+static int mgs_iocontrol_pool(const struct lu_env *env,
+ struct mgs_device *mgs,
struct obd_ioctl_data *data)
{
+ struct mgs_thread_info *mgi = mgs_env_info(env);
int rc;
- struct lustre_handle lockh;
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 (poolname == NULL)
+ RETURN(-ENOMEM);
- 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_type != LUSTRE_CFG_TYPE) {
+ CERROR("%s: unknown cfg record type: %d\n",
+ mgs->mgs_obd->obd_name, data->ioc_type);
+ GOTO(out_pool, rc = -EINVAL);
}
- if (data->ioc_plen1 > CFS_PAGE_SIZE) {
- rc = -E2BIG;
- GOTO(out_pool, rc);
- }
+ if (data->ioc_plen1 > PAGE_CACHE_SIZE)
+ GOTO(out_pool, rc = -E2BIG);
OBD_ALLOC(lcfg, data->ioc_plen1);
if (lcfg == NULL)
GOTO(out_pool, rc = -ENOMEM);
- if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
- GOTO(out_pool, rc = -EFAULT);
+ if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
+ GOTO(out_lcfg, rc = -EFAULT);
- if (lcfg->lcfg_bufcount < 2) {
- GOTO(out_pool, rc = -EFAULT);
- }
+ if (lcfg->lcfg_bufcount < 2)
+ GOTO(out_lcfg, rc = -EFAULT);
/* first arg is always <fsname>.<poolname> */
- mgs_extract_fs_pool(lustre_cfg_string(lcfg, 1), fsname,
- poolname);
+ rc = mgs_extract_fs_pool(lustre_cfg_string(lcfg, 1), mgi->mgi_fsname,
+ poolname);
+ if (rc)
+ GOTO(out_lcfg, rc);
switch (lcfg->lcfg_command) {
- case LCFG_POOL_NEW: {
+ case LCFG_POOL_NEW:
if (lcfg->lcfg_bufcount != 2)
- RETURN(-EINVAL);
- rc = mgs_pool_cmd(obd, LCFG_POOL_NEW, fsname,
+ GOTO(out_lcfg, rc = -EINVAL);
+ rc = mgs_pool_cmd(env, mgs, LCFG_POOL_NEW, mgi->mgi_fsname,
poolname, NULL);
break;
- }
- case LCFG_POOL_ADD: {
+ 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));
+ GOTO(out_lcfg, rc = -EINVAL);
+ rc = mgs_pool_cmd(env, mgs, LCFG_POOL_ADD, mgi->mgi_fsname,
+ poolname, lustre_cfg_string(lcfg, 2));
break;
- }
- case LCFG_POOL_REM: {
+ 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));
+ GOTO(out_lcfg, rc = -EINVAL);
+ rc = mgs_pool_cmd(env, mgs, LCFG_POOL_REM, mgi->mgi_fsname,
+ poolname, lustre_cfg_string(lcfg, 2));
break;
- }
- case LCFG_POOL_DEL: {
+ case LCFG_POOL_DEL:
if (lcfg->lcfg_bufcount != 2)
- RETURN(-EINVAL);
- rc = mgs_pool_cmd(obd, LCFG_POOL_DEL, fsname,
+ GOTO(out_lcfg, rc = -EINVAL);
+ rc = mgs_pool_cmd(env, mgs, LCFG_POOL_DEL, mgi->mgi_fsname,
poolname, NULL);
break;
- }
- default: {
+ 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);
+ rc, lcfg->lcfg_command, mgi->mgi_fsname, poolname);
+ GOTO(out_lcfg, rc);
}
- /* request for update */
- mgs_revoke_lock(obd, fsname, &lockh);
-
+out_lcfg:
+ OBD_FREE(lcfg, data->ioc_plen1);
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);
-
+ OBD_FREE(poolname, LOV_MAXPOOLNAME + 1);
RETURN(rc);
}
int mgs_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
void *karg, void *uarg)
{
- struct obd_device *obd = exp->exp_obd;
+ struct mgs_device *mgs = exp2mgs_dev(exp);
struct obd_ioctl_data *data = karg;
- struct lvfs_run_ctxt saved;
+ struct lu_env env;
int rc = 0;
ENTRY;
CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
+ rc = lu_env_init(&env, LCT_MG_THREAD);
+ if (rc)
+ RETURN(rc);
+
switch (cmd) {
case OBD_IOC_PARAM: {
- struct lustre_handle lockh;
+ struct mgs_thread_info *mgi = mgs_env_info(&env);
struct lustre_cfg *lcfg;
- struct llog_rec_hdr rec;
- char fsname[MTI_NAME_MAXLEN];
-
- 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);
- RETURN(-EINVAL);
+ if (data->ioc_type != LUSTRE_CFG_TYPE) {
+ CERROR("%s: unknown cfg record type: %d\n",
+ mgs->mgs_obd->obd_name, data->ioc_type);
+ GOTO(out, rc = -EINVAL);
}
OBD_ALLOC(lcfg, data->ioc_plen1);
if (lcfg == NULL)
- RETURN(-ENOMEM);
- if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
+ GOTO(out, rc = -ENOMEM);
+ if (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);
- rc = mgs_setparam(obd, lcfg, fsname);
- if (rc) {
- 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). */
- mgs_revoke_lock(obd, fsname, &lockh);
-
+ rc = mgs_setparam(&env, mgs, lcfg, mgi->mgi_fsname);
+ if (rc)
+ CERROR("%s: setparam err: rc = %d\n",
+ exp->exp_obd->obd_name, rc);
out_free:
OBD_FREE(lcfg, data->ioc_plen1);
- RETURN(rc);
+ break;
}
- case OBD_IOC_POOL: {
- RETURN(mgs_iocontrol_pool(obd, data));
- }
+ case OBD_IOC_REPLACE_NIDS: {
+ if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
+ CERROR("No device name specified!\n");
+ rc = -EINVAL;
+ break;
+ }
+
+ if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
+ CERROR("Device name is not NUL terminated!\n");
+ rc = -EINVAL;
+ break;
+ }
+
+ if (data->ioc_plen1 > MTI_NAME_MAXLEN) {
+ CERROR("Device name is too long\n");
+ rc = -EOVERFLOW;
+ break;
+ }
+
+ if (!data->ioc_inllen2 || !data->ioc_inlbuf2) {
+ CERROR("No NIDs were specified!\n");
+ rc = -EINVAL;
+ break;
+ }
+
+ if (data->ioc_inlbuf2[data->ioc_inllen2 - 1] != 0) {
+ CERROR("NID list is not NUL terminated!\n");
+ rc = -EINVAL;
+ break;
+ }
+
+ /* replace nids in llog */
+ rc = mgs_replace_nids(&env, mgs, data->ioc_inlbuf1,
+ data->ioc_inlbuf2);
+ if (rc)
+ CERROR("%s: error replacing nids: rc = %d\n",
+ exp->exp_obd->obd_name, rc);
+
+ break;
+ }
+
+ case OBD_IOC_POOL:
+ rc = mgs_iocontrol_pool(&env, mgs, data);
+ break;
case OBD_IOC_DUMP_LOG: {
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);
+
+ ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
+ rc = class_config_dump_llog(&env, ctxt, data->ioc_inlbuf1,
+ NULL);
llog_ctxt_put(ctxt);
- RETURN(rc);
+ break;
}
+ case OBD_IOC_LLOG_CANCEL:
+ case OBD_IOC_LLOG_REMOVE:
case OBD_IOC_LLOG_CHECK:
case OBD_IOC_LLOG_INFO:
case OBD_IOC_LLOG_PRINT: {
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);
+ ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
+ rc = llog_ioctl(&env, ctxt, cmd, data);
+ llog_ctxt_put(ctxt);
+ break;
}
default:
- CDEBUG(D_INFO, "unknown command %x\n", cmd);
- RETURN(-EINVAL);
+ CERROR("%s: unknown command %#x\n",
+ mgs->mgs_obd->obd_name, cmd);
+ rc = -ENOTTY;
+ break;
}
- RETURN(0);
+out:
+ lu_env_fini(&env);
+ RETURN(rc);
+}
+
+static int mgs_connect_to_osd(struct mgs_device *m, const char *nextdev)
+{
+ struct obd_connect_data *data = NULL;
+ struct obd_device *obd;
+ int rc;
+ ENTRY;
+
+ OBD_ALLOC_PTR(data);
+ if (data == NULL)
+ RETURN(-ENOMEM);
+
+ obd = class_name2obd(nextdev);
+ if (obd == NULL) {
+ CERROR("can't locate next device: %s\n", nextdev);
+ GOTO(out, rc = -ENOTCONN);
+ }
+
+ data->ocd_version = LUSTRE_VERSION_CODE;
+
+ rc = obd_connect(NULL, &m->mgs_bottom_exp, obd,
+ &obd->obd_uuid, data, NULL);
+ if (rc) {
+ CERROR("cannot connect to next dev %s (%d)\n", nextdev, rc);
+ GOTO(out, rc);
+ }
+
+ m->mgs_bottom = lu2dt_dev(m->mgs_bottom_exp->exp_obd->obd_lu_dev);
+ m->mgs_dt_dev.dd_lu_dev.ld_site = m->mgs_bottom->dd_lu_dev.ld_site;
+ LASSERT(m->mgs_dt_dev.dd_lu_dev.ld_site);
+out:
+ OBD_FREE_PTR(data);
+ RETURN(rc);
+}
+
+static struct tgt_handler mgs_mgs_handlers[] = {
+TGT_RPC_HANDLER(MGS_FIRST_OPC,
+ 0, MGS_CONNECT, mgs_connect,
+ &RQF_CONNECT, LUSTRE_OBD_VERSION),
+TGT_RPC_HANDLER(MGS_FIRST_OPC,
+ 0, MGS_DISCONNECT, mgs_disconnect,
+ &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
+TGT_MGS_HDL_VAR(0, MGS_EXCEPTION, mgs_exception),
+TGT_MGS_HDL (HABEO_REFERO | MUTABOR, MGS_SET_INFO, mgs_set_info),
+TGT_MGS_HDL (HABEO_REFERO | MUTABOR, MGS_TARGET_REG, mgs_target_reg),
+TGT_MGS_HDL_VAR(0, MGS_TARGET_DEL, mgs_target_del),
+TGT_MGS_HDL (HABEO_REFERO, MGS_CONFIG_READ, mgs_config_read),
+};
+
+static struct tgt_handler mgs_obd_handlers[] = {
+TGT_OBD_HDL(0, OBD_PING, tgt_obd_ping),
+};
+
+static struct tgt_handler mgs_dlm_handlers[] = {
+[LDLM_ENQUEUE - LDLM_FIRST_OPC] = {
+ .th_name = "LDLM_ENQUEUE",
+ /* don't use th_fail_id for MGS to don't interfere with MDS tests.
+ * * There are no tests for MGS with OBD_FAIL_LDLM_ENQUEUE_NET so it
+ * * is safe. If such tests will be needed we have to distinguish
+ * * MDS and MGS fail ids, e.g use OBD_FAIL_MGS_ENQUEUE_NET for MGS
+ * * instead of common OBD_FAIL_LDLM_ENQUEUE_NET */
+ .th_fail_id = 0,
+ .th_opc = LDLM_ENQUEUE,
+ .th_flags = HABEO_CLAVIS,
+ .th_act = tgt_enqueue,
+ .th_fmt = &RQF_LDLM_ENQUEUE,
+ .th_version = LUSTRE_DLM_VERSION,
+ },
+};
+
+static struct tgt_handler mgs_llog_handlers[] = {
+TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_CREATE, mgs_llog_open),
+TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
+TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
+TGT_LLOG_HDL_VAR(0, LLOG_ORIGIN_HANDLE_CLOSE, tgt_llog_close),
+TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
+};
+
+static struct tgt_opc_slice mgs_common_slice[] = {
+ {
+ .tos_opc_start = MGS_FIRST_OPC,
+ .tos_opc_end = MGS_LAST_OPC,
+ .tos_hs = mgs_mgs_handlers
+ },
+ {
+ .tos_opc_start = OBD_FIRST_OPC,
+ .tos_opc_end = OBD_LAST_OPC,
+ .tos_hs = mgs_obd_handlers
+ },
+ {
+ .tos_opc_start = LDLM_FIRST_OPC,
+ .tos_opc_end = LDLM_LAST_OPC,
+ .tos_hs = mgs_dlm_handlers
+ },
+ {
+ .tos_opc_start = LLOG_FIRST_OPC,
+ .tos_opc_end = LLOG_LAST_OPC,
+ .tos_hs = mgs_llog_handlers
+ },
+ {
+ .tos_opc_start = SEC_FIRST_OPC,
+ .tos_opc_end = SEC_LAST_OPC,
+ .tos_hs = tgt_sec_ctx_handlers
+ },
+ {
+ .tos_hs = NULL
+ }
+};
+
+static int mgs_init0(const struct lu_env *env, struct mgs_device *mgs,
+ struct lu_device_type *ldt, struct lustre_cfg *lcfg)
+{
+ struct ptlrpc_service_conf conf;
+ struct obd_device *obd;
+ struct lustre_mount_info *lmi;
+ struct llog_ctxt *ctxt;
+ int rc;
+
+ ENTRY;
+
+ lmi = server_get_mount(lustre_cfg_string(lcfg, 0));
+ if (lmi == NULL)
+ RETURN(-ENODEV);
+
+ mgs->mgs_dt_dev.dd_lu_dev.ld_ops = &mgs_lu_ops;
+
+ rc = mgs_connect_to_osd(mgs, lustre_cfg_string(lcfg, 3));
+ if (rc)
+ GOTO(err_lmi, rc);
+
+ obd = class_name2obd(lustre_cfg_string(lcfg, 0));
+ LASSERT(obd);
+ mgs->mgs_obd = obd;
+ mgs->mgs_obd->obd_lu_dev = &mgs->mgs_dt_dev.dd_lu_dev;
+
+ obd->u.obt.obt_magic = OBT_MAGIC;
+ obd->u.obt.obt_instance = 0;
+
+ /* namespace for mgs llog */
+ 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);
+
+ /* No recovery for MGCs */
+ obd->obd_replayable = 0;
+
+ rc = tgt_init(env, &mgs->mgs_lut, obd, mgs->mgs_bottom,
+ mgs_common_slice, OBD_FAIL_MGS_ALL_REQUEST_NET,
+ OBD_FAIL_MGS_ALL_REPLY_NET);
+ if (rc)
+ GOTO(err_ns, rc);
+
+ rc = mgs_fs_setup(env, mgs);
+ if (rc) {
+ CERROR("%s: MGS filesystem method init failed: rc = %d\n",
+ obd->obd_name, rc);
+ GOTO(err_tgt, rc);
+ }
+
+ rc = llog_setup(env, obd, &obd->obd_olg, LLOG_CONFIG_ORIG_CTXT,
+ obd, &llog_osd_ops);
+ if (rc)
+ GOTO(err_fs, rc);
+
+ /* XXX: we need this trick till N:1 stack is supported
+ * set "current" directory for named llogs */
+ ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
+ LASSERT(ctxt);
+ ctxt->loc_dir = mgs->mgs_configs_dir;
+ llog_ctxt_put(ctxt);
+
+ /* Internal mgs setup */
+ mgs_init_fsdb_list(mgs);
+ mutex_init(&mgs->mgs_mutex);
+ mgs->mgs_start_time = cfs_time_current_sec();
+ spin_lock_init(&mgs->mgs_lock);
+
+ rc = lproc_mgs_setup(mgs, lustre_cfg_string(lcfg, 3));
+ if (rc != 0) {
+ CERROR("%s: cannot initialize proc entry: rc = %d\n",
+ obd->obd_name, rc);
+ GOTO(err_llog, rc);
+ }
+
+ ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
+ "mgs_ldlm_client", &obd->obd_ldlm_client);
+
+ conf = (typeof(conf)) {
+ .psc_name = LUSTRE_MGS_NAME,
+ .psc_watchdog_factor = MGS_SERVICE_WATCHDOG_FACTOR,
+ .psc_buf = {
+ .bc_nbufs = MGS_NBUFS,
+ .bc_buf_size = MGS_BUFSIZE,
+ .bc_req_max_size = MGS_MAXREQSIZE,
+ .bc_rep_max_size = MGS_MAXREPSIZE,
+ .bc_req_portal = MGS_REQUEST_PORTAL,
+ .bc_rep_portal = MGC_REPLY_PORTAL,
+ },
+ .psc_thr = {
+ .tc_thr_name = "ll_mgs",
+ .tc_nthrs_init = MGS_NTHRS_INIT,
+ .tc_nthrs_max = MGS_NTHRS_MAX,
+ .tc_ctx_tags = LCT_MG_THREAD,
+ },
+ .psc_ops = {
+ .so_req_handler = tgt_request_handle,
+ .so_req_printer = target_print_req,
+ },
+ };
+
+ /* Start the service threads */
+ mgs->mgs_service = ptlrpc_register_service(&conf, obd->obd_proc_entry);
+ if (IS_ERR(mgs->mgs_service)) {
+ rc = PTR_ERR(mgs->mgs_service);
+ CERROR("failed to start mgs service: %d\n", rc);
+ mgs->mgs_service = NULL;
+ GOTO(err_lproc, rc);
+ }
+
+ ping_evictor_start();
+
+ CDEBUG(D_INFO, "MGS %s started\n", obd->obd_name);
+
+ /* device stack is not yet fully setup to keep no objects behind */
+ lu_site_purge(env, mgs2lu_dev(mgs)->ld_site, ~0);
+ RETURN(0);
+err_lproc:
+ lproc_mgs_cleanup(mgs);
+err_llog:
+ ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
+ if (ctxt) {
+ ctxt->loc_dir = NULL;
+ llog_cleanup(env, ctxt);
+ }
+err_tgt:
+ tgt_fini(env, &mgs->mgs_lut);
+err_fs:
+ /* No extra cleanup needed for llog_init_commit_thread() */
+ mgs_fs_cleanup(env, mgs);
+err_ns:
+ ldlm_namespace_free(obd->obd_namespace, NULL, 0);
+ obd->obd_namespace = NULL;
+err_ops:
+ lu_site_purge(env, mgs2lu_dev(mgs)->ld_site, ~0);
+ if (!cfs_hash_is_empty(mgs2lu_dev(mgs)->ld_site->ls_obj_hash)) {
+ LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
+ lu_site_print(env, mgs2lu_dev(mgs)->ld_site, &msgdata,
+ lu_cdebug_printer);
+ }
+ obd_disconnect(mgs->mgs_bottom_exp);
+err_lmi:
+ if (lmi)
+ server_put_mount(lustre_cfg_string(lcfg, 0), lmi->lmi_mnt);
+ RETURN(rc);
+}
+
+static struct lu_device *mgs_device_free(const struct lu_env *env,
+ struct lu_device *lu)
+{
+ struct mgs_device *mgs = lu2mgs_dev(lu);
+ ENTRY;
+
+ dt_device_fini(&mgs->mgs_dt_dev);
+ OBD_FREE_PTR(mgs);
+ RETURN(NULL);
+}
+
+static int mgs_process_config(const struct lu_env *env,
+ struct lu_device *dev,
+ struct lustre_cfg *lcfg)
+{
+ LBUG();
+ return 0;
+}
+
+static int mgs_object_init(const struct lu_env *env, struct lu_object *o,
+ const struct lu_object_conf *unused)
+{
+ struct mgs_device *d = lu2mgs_dev(o->lo_dev);
+ struct lu_device *under;
+ struct lu_object *below;
+ int rc = 0;
+ ENTRY;
+
+ /* do no set .do_ops as mgs calls to bottom osd directly */
+
+ CDEBUG(D_INFO, "object init, fid = "DFID"\n",
+ PFID(lu_object_fid(o)));
+
+ under = &d->mgs_bottom->dd_lu_dev;
+ below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
+ if (below != NULL)
+ lu_object_add(o, below);
+ else
+ rc = -ENOMEM;
+
+ return 0;
+}
+
+static void mgs_object_free(const struct lu_env *env, struct lu_object *o)
+{
+ struct mgs_object *obj = lu2mgs_obj(o);
+ struct lu_object_header *h = o->lo_header;
+
+ dt_object_fini(&obj->mgo_obj);
+ lu_object_header_fini(h);
+ OBD_FREE_PTR(obj);
+}
+
+static int mgs_object_print(const struct lu_env *env, void *cookie,
+ lu_printer_t p, const struct lu_object *l)
+{
+ const struct mgs_object *o = lu2mgs_obj((struct lu_object *) l);
+
+ return (*p)(env, cookie, LUSTRE_MGS_NAME"-object@%p", o);
+}
+
+struct lu_object_operations mgs_lu_obj_ops = {
+ .loo_object_init = mgs_object_init,
+ .loo_object_free = mgs_object_free,
+ .loo_object_print = mgs_object_print,
+};
+
+struct lu_object *mgs_object_alloc(const struct lu_env *env,
+ const struct lu_object_header *hdr,
+ struct lu_device *d)
+{
+ struct lu_object_header *h;
+ struct mgs_object *o;
+ struct lu_object *l;
+
+ LASSERT(hdr == NULL);
+
+ OBD_ALLOC_PTR(o);
+ if (o != NULL) {
+ l = &o->mgo_obj.do_lu;
+ h = &o->mgo_header;
+
+ lu_object_header_init(h);
+ dt_object_init(&o->mgo_obj, h, d);
+ lu_object_add_top(h, l);
+
+ l->lo_ops = &mgs_lu_obj_ops;
+
+ return l;
+ } else {
+ return NULL;
+ }
+}
+
+const struct lu_device_operations mgs_lu_ops = {
+ .ldo_object_alloc = mgs_object_alloc,
+ .ldo_process_config = mgs_process_config,
+};
+
+static struct lu_device *mgs_device_alloc(const struct lu_env *env,
+ struct lu_device_type *type,
+ struct lustre_cfg *lcfg)
+{
+ struct mgs_device *mgs;
+ struct lu_device *ludev;
+
+ OBD_ALLOC_PTR(mgs);
+ if (mgs == NULL) {
+ ludev = ERR_PTR(-ENOMEM);
+ } else {
+ int rc;
+
+ ludev = mgs2lu_dev(mgs);
+ dt_device_init(&mgs->mgs_dt_dev, type);
+ rc = mgs_init0(env, mgs, type, lcfg);
+ if (rc != 0) {
+ mgs_device_free(env, ludev);
+ ludev = ERR_PTR(rc);
+ }
+ }
+ return ludev;
+}
+
+static struct lu_device *mgs_device_fini(const struct lu_env *env,
+ struct lu_device *d)
+{
+ struct mgs_device *mgs = lu2mgs_dev(d);
+ struct obd_device *obd = mgs->mgs_obd;
+ struct llog_ctxt *ctxt;
+
+ ENTRY;
+
+ LASSERT(mgs->mgs_bottom);
+
+ class_disconnect_exports(obd);
+
+ ping_evictor_stop();
+
+ ptlrpc_unregister_service(mgs->mgs_service);
+
+ obd_exports_barrier(obd);
+ obd_zombie_barrier();
+
+ tgt_fini(env, &mgs->mgs_lut);
+ mgs_cleanup_fsdb_list(mgs);
+ lproc_mgs_cleanup(mgs);
+
+ ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
+ if (ctxt) {
+ ctxt->loc_dir = NULL;
+ llog_cleanup(env, ctxt);
+ }
+
+ mgs_fs_cleanup(env, mgs);
+
+ ldlm_namespace_free(obd->obd_namespace, NULL, 1);
+ obd->obd_namespace = NULL;
+
+ lu_site_purge(env, d->ld_site, ~0);
+ if (!cfs_hash_is_empty(d->ld_site->ls_obj_hash)) {
+ LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
+ lu_site_print(env, d->ld_site, &msgdata, lu_cdebug_printer);
+ }
+
+ LASSERT(mgs->mgs_bottom_exp);
+ obd_disconnect(mgs->mgs_bottom_exp);
+
+ server_put_mount(obd->obd_name, NULL);
+
+ RETURN(NULL);
+}
+
+/* context key constructor/destructor: mgs_key_init, mgs_key_fini */
+LU_KEY_INIT_FINI(mgs, struct mgs_thread_info);
+
+LU_TYPE_INIT_FINI(mgs, &mgs_thread_key);
+
+LU_CONTEXT_KEY_DEFINE(mgs, LCT_MG_THREAD);
+
+static struct lu_device_type_operations mgs_device_type_ops = {
+ .ldto_init = mgs_type_init,
+ .ldto_fini = mgs_type_fini,
+
+ .ldto_start = mgs_type_start,
+ .ldto_stop = mgs_type_stop,
+
+ .ldto_device_alloc = mgs_device_alloc,
+ .ldto_device_free = mgs_device_free,
+
+ .ldto_device_fini = mgs_device_fini
+};
+
+static struct lu_device_type mgs_device_type = {
+ .ldt_tags = LU_DEVICE_DT,
+ .ldt_name = LUSTRE_MGS_NAME,
+ .ldt_ops = &mgs_device_type_ops,
+ .ldt_ctx_tags = LCT_MG_THREAD
+};
+
+static int mgs_obd_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 *lexp;
+ struct lustre_handle conn = { 0 };
+ int rc;
+
+ ENTRY;
+
+ if (exp == NULL || obd == NULL || cluuid == NULL)
+ RETURN(-EINVAL);
+
+ rc = class_connect(&conn, obd, cluuid);
+ if (rc)
+ RETURN(rc);
+
+ lexp = class_conn2export(&conn);
+ if (lexp == NULL)
+ RETURN(-EFAULT);
+
+ if (data != NULL) {
+ data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED;
+ data->ocd_version = LUSTRE_VERSION_CODE;
+ lexp->exp_connect_data = *data;
+ }
+
+ tgt_counter_incr(lexp, LPROC_MGS_CONNECT);
+
+ rc = mgs_export_stats_init(obd, lexp, localdata);
+ if (rc)
+ class_disconnect(lexp);
+ else
+ *exp = lexp;
+
+ RETURN(rc);
+}
+
+static int mgs_obd_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);
+
+ tgt_counter_incr(exp, LPROC_MGS_CONNECT);
+
+ if (data != NULL) {
+ data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED;
+ data->ocd_version = LUSTRE_VERSION_CODE;
+ exp->exp_connect_data = *data;
+ }
+
+ RETURN(mgs_export_stats_init(obd, exp, localdata));
+}
+
+static int mgs_obd_disconnect(struct obd_export *exp)
+{
+ int rc;
+
+ ENTRY;
+
+ LASSERT(exp);
+
+ mgs_fsc_cleanup(exp);
+
+ class_export_get(exp);
+ tgt_counter_incr(exp, LPROC_MGS_DISCONNECT);
+
+ rc = server_disconnect_export(exp);
+ class_export_put(exp);
+ RETURN(rc);
}
/* use obd ops to offer management infrastructure */
-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 struct obd_ops mgs_obd_device_ops = {
+ .o_owner = THIS_MODULE,
+ .o_connect = mgs_obd_connect,
+ .o_reconnect = mgs_obd_reconnect,
+ .o_disconnect = mgs_obd_disconnect,
+ .o_init_export = mgs_init_export,
+ .o_destroy_export = mgs_destroy_export,
+ .o_iocontrol = mgs_iocontrol,
};
static int __init mgs_init(void)
{
- struct lprocfs_static_vars lvars;
+ struct lprocfs_static_vars lvars;
- lprocfs_mgs_init_vars(&lvars);
- class_register_type(&mgs_obd_ops, NULL,
- lvars.module_vars, LUSTRE_MGS_NAME, NULL);
+ lprocfs_mgs_init_vars(&lvars);
+ class_register_type(&mgs_obd_device_ops, NULL, lvars.module_vars,
+ LUSTRE_MGS_NAME, &mgs_device_type);
- return 0;
+ return 0;
}
static void /*__exit*/ mgs_exit(void)
{
- class_unregister_type(LUSTRE_MGS_NAME);
+ class_unregister_type(LUSTRE_MGS_NAME);
}
MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
git://git.whamcloud.com / fs / lustre-release.git / blobdiff