-/* -*- 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) 2011, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Author: Nathan Rutman <nathan@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_MGC
#define D_MGC 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
-
+#include <linux/module.h>
#include <obd_class.h>
#include <lustre_dlm.h>
#include <lprocfs_status.h>
#include <lustre_log.h>
-#include <lustre_fsfilt.h>
#include <lustre_disk.h>
+#include <dt_object.h>
+
#include "mgc_internal.h"
-static int mgc_name2resid(char *name, int len, struct ldlm_res_id *res_id)
+static int mgc_name2resid(char *name, int len, struct ldlm_res_id *res_id,
+ int type)
{
__u64 resname = 0;
- if (len > 8) {
+ if (len > sizeof(resname)) {
CERROR("name too long: %s\n", name);
return -EINVAL;
}
}
memcpy(&resname, name, len);
- memset(res_id, 0, sizeof(*res_id));
-
/* Always use the same endianness for the resid */
+ memset(res_id, 0, sizeof(*res_id));
res_id->name[0] = cpu_to_le64(resname);
+ /* XXX: unfortunately, sptlprc and config llog share one lock */
+ switch(type) {
+ case CONFIG_T_CONFIG:
+ case CONFIG_T_SPTLRPC:
+ resname = 0;
+ break;
+ case CONFIG_T_RECOVER:
+ case CONFIG_T_PARAMS:
+ resname = type;
+ break;
+ default:
+ LBUG();
+ }
+ res_id->name[1] = cpu_to_le64(resname);
CDEBUG(D_MGC, "log %s to resid "LPX64"/"LPX64" (%.8s)\n", name,
res_id->name[0], res_id->name[1], (char *)&res_id->name[0]);
return 0;
}
-int mgc_fsname2resid(char *fsname, struct ldlm_res_id *res_id)
+int mgc_fsname2resid(char *fsname, struct ldlm_res_id *res_id, int type)
{
/* fsname is at most 8 chars long, maybe contain "-".
* e.g. "lustre", "SUN-000" */
- return mgc_name2resid(fsname, strlen(fsname), res_id);
+ return mgc_name2resid(fsname, strlen(fsname), res_id, type);
}
EXPORT_SYMBOL(mgc_fsname2resid);
-int mgc_logname2resid(char *logname, struct ldlm_res_id *res_id)
+int mgc_logname2resid(char *logname, struct ldlm_res_id *res_id, int type)
{
- char *name_end;
- int len;
-
- /* logname consists of "fsname-nodetype".
- * e.g. "lustre-MDT0001", "SUN-000-client" */
- name_end = strrchr(logname, '-');
- LASSERT(name_end);
- len = name_end - logname;
- return mgc_name2resid(logname, len, res_id);
+ char *name_end;
+ int len;
+
+ /* logname consists of "fsname-nodetype".
+ * e.g. "lustre-MDT0001", "SUN-000-client"
+ * there is an exception: llog "params" */
+ name_end = strrchr(logname, '-');
+ if (!name_end)
+ len = strlen(logname);
+ else
+ len = name_end - logname;
+ return mgc_name2resid(logname, len, res_id, type);
}
/********************** config llog list **********************/
static CFS_LIST_HEAD(config_llog_list);
-static spinlock_t config_list_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(config_list_lock);
/* Take a reference to a config log */
static int config_log_get(struct config_llog_data *cld)
{
ENTRY;
- if (cld->cld_stopping)
- RETURN(1);
- atomic_inc(&cld->cld_refcount);
+ cfs_atomic_inc(&cld->cld_refcount);
CDEBUG(D_INFO, "log %s refs %d\n", cld->cld_logname,
- atomic_read(&cld->cld_refcount));
+ cfs_atomic_read(&cld->cld_refcount));
RETURN(0);
}
ENTRY;
CDEBUG(D_INFO, "log %s refs %d\n", cld->cld_logname,
- atomic_read(&cld->cld_refcount));
- LASSERT(atomic_read(&cld->cld_refcount) > 0);
+ cfs_atomic_read(&cld->cld_refcount));
+ LASSERT(cfs_atomic_read(&cld->cld_refcount) > 0);
/* spinlock to make sure no item with 0 refcount in the list */
- spin_lock(&config_list_lock);
- if (unlikely(atomic_dec_and_test(&cld->cld_refcount))) {
- list_del(&cld->cld_list_chain);
- spin_unlock(&config_list_lock);
+ if (cfs_atomic_dec_and_lock(&cld->cld_refcount, &config_list_lock)) {
+ cfs_list_del(&cld->cld_list_chain);
+ spin_unlock(&config_list_lock);
CDEBUG(D_MGC, "dropping config log %s\n", cld->cld_logname);
+ if (cld->cld_recover)
+ config_log_put(cld->cld_recover);
if (cld->cld_sptlrpc)
config_log_put(cld->cld_sptlrpc);
- if (cld->cld_is_sptlrpc)
+ if (cld->cld_params)
+ config_log_put(cld->cld_params);
+ if (cld_is_sptlrpc(cld))
sptlrpc_conf_log_stop(cld->cld_logname);
class_export_put(cld->cld_mgcexp);
- OBD_FREE(cld->cld_logname, strlen(cld->cld_logname) + 1);
- if (cld->cld_cfg.cfg_instance != NULL)
- OBD_FREE(cld->cld_cfg.cfg_instance,
- strlen(cld->cld_cfg.cfg_instance) + 1);
- OBD_FREE(cld, sizeof(*cld));
- } else {
- spin_unlock(&config_list_lock);
+ OBD_FREE(cld, sizeof(*cld) + strlen(cld->cld_logname) + 1);
}
EXIT;
struct config_llog_instance *cfg)
{
struct config_llog_data *cld;
- char *logid = logname;
- int match_instance = 0;
+ struct config_llog_data *found = NULL;
+ void * instance;
ENTRY;
- if (cfg && cfg->cfg_instance) {
- match_instance++;
- logid = cfg->cfg_instance;
- }
- if (!logid) {
- CERROR("No log specified\n");
- RETURN(ERR_PTR(-EINVAL));
- }
+ LASSERT(logname != NULL);
- spin_lock(&config_list_lock);
- list_for_each_entry(cld, &config_llog_list, cld_list_chain) {
- if (match_instance && cld->cld_cfg.cfg_instance &&
- strcmp(logid, cld->cld_cfg.cfg_instance) == 0)
- goto out_found;
- if (!match_instance &&
- strcmp(logid, cld->cld_logname) == 0)
- goto out_found;
+ instance = cfg ? cfg->cfg_instance : NULL;
+ spin_lock(&config_list_lock);
+ cfs_list_for_each_entry(cld, &config_llog_list, cld_list_chain) {
+ /* check if instance equals */
+ if (instance != cld->cld_cfg.cfg_instance)
+ continue;
+
+ /* instance may be NULL, should check name */
+ if (strcmp(logname, cld->cld_logname) == 0) {
+ found = cld;
+ break;
+ }
}
- spin_unlock(&config_list_lock);
-
- CDEBUG(D_CONFIG, "can't get log %s\n", logid);
- RETURN(ERR_PTR(-ENOENT));
-out_found:
- atomic_inc(&cld->cld_refcount);
- spin_unlock(&config_list_lock);
- LASSERT(cld->cld_stopping == 0 || cld->cld_is_sptlrpc == 0);
- RETURN(cld);
+ if (found) {
+ cfs_atomic_inc(&found->cld_refcount);
+ LASSERT(found->cld_stopping == 0 || cld_is_sptlrpc(found) == 0);
+ }
+ spin_unlock(&config_list_lock);
+ RETURN(found);
}
static
struct config_llog_data *do_config_log_add(struct obd_device *obd,
char *logname,
- unsigned int is_sptlrpc,
+ int type,
struct config_llog_instance *cfg,
struct super_block *sb)
{
int rc;
ENTRY;
- CDEBUG(D_MGC, "do adding config log %s:%s\n", logname,
- cfg ? cfg->cfg_instance : "NULL");
+ CDEBUG(D_MGC, "do adding config log %s:%p\n", logname,
+ cfg ? cfg->cfg_instance : 0);
- OBD_ALLOC(cld, sizeof(*cld));
+ OBD_ALLOC(cld, sizeof(*cld) + strlen(logname) + 1);
if (!cld)
RETURN(ERR_PTR(-ENOMEM));
- OBD_ALLOC(cld->cld_logname, strlen(logname) + 1);
- if (!cld->cld_logname) {
- OBD_FREE(cld, sizeof(*cld));
- RETURN(ERR_PTR(-ENOMEM));
- }
+
strcpy(cld->cld_logname, logname);
if (cfg)
cld->cld_cfg = *cfg;
+ else
+ cld->cld_cfg.cfg_callback = class_config_llog_handler;
+ mutex_init(&cld->cld_lock);
cld->cld_cfg.cfg_last_idx = 0;
cld->cld_cfg.cfg_flags = 0;
cld->cld_cfg.cfg_sb = sb;
- cld->cld_is_sptlrpc = is_sptlrpc;
- atomic_set(&cld->cld_refcount, 1);
+ cld->cld_type = type;
+ cfs_atomic_set(&cld->cld_refcount, 1);
/* Keep the mgc around until we are done */
cld->cld_mgcexp = class_export_get(obd->obd_self_export);
- if (cfg && cfg->cfg_instance != NULL) {
- OBD_ALLOC(cld->cld_cfg.cfg_instance,
- strlen(cfg->cfg_instance) + 1);
- strcpy(cld->cld_cfg.cfg_instance, cfg->cfg_instance);
- }
-
- if (is_sptlrpc) {
+ if (cld_is_sptlrpc(cld)) {
sptlrpc_conf_log_start(logname);
cld->cld_cfg.cfg_obdname = obd->obd_name;
}
- rc = mgc_logname2resid(logname, &cld->cld_resid);
+ rc = mgc_logname2resid(logname, &cld->cld_resid, type);
- spin_lock(&config_list_lock);
- list_add(&cld->cld_list_chain, &config_llog_list);
- spin_unlock(&config_list_lock);
+ spin_lock(&config_list_lock);
+ cfs_list_add(&cld->cld_list_chain, &config_llog_list);
+ spin_unlock(&config_list_lock);
if (rc) {
config_log_put(cld);
RETURN(ERR_PTR(rc));
}
- if (is_sptlrpc) {
+ if (cld_is_sptlrpc(cld)) {
rc = mgc_process_log(obd, cld);
- if (rc)
+ if (rc && rc != -ENOENT)
CERROR("failed processing sptlrpc log: %d\n", rc);
}
RETURN(cld);
}
-/**
- * Add this log to our list of active logs.
+static struct config_llog_data *config_recover_log_add(struct obd_device *obd,
+ char *fsname,
+ struct config_llog_instance *cfg,
+ struct super_block *sb)
+{
+ struct config_llog_instance lcfg = *cfg;
+ struct lustre_sb_info *lsi = s2lsi(sb);
+ struct config_llog_data *cld;
+ char logname[32];
+
+ if (IS_OST(lsi))
+ return NULL;
+
+ /* for osp-on-ost, see lustre_start_osp() */
+ if (IS_MDT(lsi) && lcfg.cfg_instance)
+ return NULL;
+
+ /* we have to use different llog for clients and mdts for cmd
+ * where only clients are notified if one of cmd server restarts */
+ LASSERT(strlen(fsname) < sizeof(logname) / 2);
+ strcpy(logname, fsname);
+ if (IS_SERVER(lsi)) { /* mdt */
+ LASSERT(lcfg.cfg_instance == NULL);
+ lcfg.cfg_instance = sb;
+ strcat(logname, "-mdtir");
+ } else {
+ LASSERT(lcfg.cfg_instance != NULL);
+ strcat(logname, "-cliir");
+ }
+
+ cld = do_config_log_add(obd, logname, CONFIG_T_RECOVER, &lcfg, sb);
+ return cld;
+}
+
+static struct config_llog_data *config_params_log_add(struct obd_device *obd,
+ struct config_llog_instance *cfg, struct super_block *sb)
+{
+ struct config_llog_instance lcfg = *cfg;
+ struct config_llog_data *cld;
+
+ lcfg.cfg_instance = sb;
+
+ cld = do_config_log_add(obd, PARAMS_FILENAME, CONFIG_T_PARAMS,
+ &lcfg, sb);
+
+ return cld;
+}
+
+/** Add this log to the list of active logs watched by an MGC.
+ * Active means we're watching for updates.
* We have one active log per "mount" - client instance or servername.
* Each instance may be at a different point in the log.
*/
struct config_llog_instance *cfg,
struct super_block *sb)
{
- struct config_llog_data *cld, *sptlrpc_cld;
- char seclogname[20];
- char *ptr;
- ENTRY;
+ struct lustre_sb_info *lsi = s2lsi(sb);
+ struct config_llog_data *cld;
+ struct config_llog_data *sptlrpc_cld;
+ struct config_llog_data *params_cld;
+ char seclogname[32];
+ char *ptr;
+ int rc;
+ ENTRY;
- CDEBUG(D_MGC, "adding config log %s:%s\n", logname, cfg->cfg_instance);
+ CDEBUG(D_MGC, "adding config log %s:%p\n", logname, cfg->cfg_instance);
/*
* for each regular log, the depended sptlrpc log name is
strcpy(seclogname + (ptr - logname), "-sptlrpc");
sptlrpc_cld = config_log_find(seclogname, NULL);
- if (IS_ERR(sptlrpc_cld)) {
- sptlrpc_cld = do_config_log_add(obd, seclogname, 1, NULL, NULL);
+ if (sptlrpc_cld == NULL) {
+ sptlrpc_cld = do_config_log_add(obd, seclogname,
+ CONFIG_T_SPTLRPC, NULL, NULL);
if (IS_ERR(sptlrpc_cld)) {
CERROR("can't create sptlrpc log: %s\n", seclogname);
- RETURN(PTR_ERR(sptlrpc_cld));
+ GOTO(out_err, rc = PTR_ERR(sptlrpc_cld));
}
}
-
- cld = do_config_log_add(obd, logname, 0, cfg, sb);
- if (IS_ERR(cld)) {
- CERROR("can't create log: %s\n", logname);
- config_log_put(sptlrpc_cld);
- RETURN(PTR_ERR(cld));
- }
-
- cld->cld_sptlrpc = sptlrpc_cld;
-
- RETURN(0);
+ params_cld = config_params_log_add(obd, cfg, sb);
+ if (IS_ERR(params_cld)) {
+ rc = PTR_ERR(params_cld);
+ CERROR("%s: can't create params log: rc = %d\n",
+ obd->obd_name, rc);
+ GOTO(out_err1, rc);
+ }
+
+ cld = do_config_log_add(obd, logname, CONFIG_T_CONFIG, cfg, sb);
+ if (IS_ERR(cld)) {
+ CERROR("can't create log: %s\n", logname);
+ GOTO(out_err2, rc = PTR_ERR(cld));
+ }
+
+ cld->cld_sptlrpc = sptlrpc_cld;
+ cld->cld_params = params_cld;
+
+ LASSERT(lsi->lsi_lmd);
+ if (!(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOIR)) {
+ struct config_llog_data *recover_cld;
+ ptr = strrchr(seclogname, '-');
+ if (ptr != NULL) {
+ *ptr = 0;
+ }
+ else {
+ CERROR("sptlrpc log name not correct: %s", seclogname);
+ config_log_put(cld);
+ RETURN(-EINVAL);
+ }
+ recover_cld = config_recover_log_add(obd, seclogname, cfg, sb);
+ if (IS_ERR(recover_cld))
+ GOTO(out_err3, rc = PTR_ERR(recover_cld));
+ cld->cld_recover = recover_cld;
+ }
+
+ RETURN(0);
+
+out_err3:
+ config_log_put(cld);
+
+out_err2:
+ config_log_put(params_cld);
+
+out_err1:
+ config_log_put(sptlrpc_cld);
+
+out_err:
+ RETURN(rc);
}
-DECLARE_MUTEX(llog_process_lock);
+DEFINE_MUTEX(llog_process_lock);
-/* Stop watching for updates on this log. */
+/** Stop watching for updates on this log.
+ */
static int config_log_end(char *logname, struct config_llog_instance *cfg)
{
- struct config_llog_data *cld, *cld_sptlrpc = NULL;
+ struct config_llog_data *cld;
+ struct config_llog_data *cld_sptlrpc = NULL;
+ struct config_llog_data *cld_params = NULL;
+ struct config_llog_data *cld_recover = NULL;
int rc = 0;
ENTRY;
cld = config_log_find(logname, cfg);
- if (IS_ERR(cld))
- RETURN(PTR_ERR(cld));
+ if (cld == NULL)
+ RETURN(-ENOENT);
- down(&llog_process_lock);
+ mutex_lock(&cld->cld_lock);
/*
* if cld_stopping is set, it means we didn't start the log thus
* not owning the start ref. this can happen after previous umount:
* calling start_log.
*/
if (unlikely(cld->cld_stopping)) {
- up(&llog_process_lock);
+ mutex_unlock(&cld->cld_lock);
/* drop the ref from the find */
config_log_put(cld);
RETURN(rc);
}
cld->cld_stopping = 1;
- up(&llog_process_lock);
- spin_lock(&config_list_lock);
- cld_sptlrpc = cld->cld_sptlrpc;
- cld->cld_sptlrpc = NULL;
- spin_unlock(&config_list_lock);
+ cld_recover = cld->cld_recover;
+ cld->cld_recover = NULL;
+ mutex_unlock(&cld->cld_lock);
+
+ if (cld_recover) {
+ mutex_lock(&cld_recover->cld_lock);
+ cld_recover->cld_stopping = 1;
+ mutex_unlock(&cld_recover->cld_lock);
+ config_log_put(cld_recover);
+ }
+
+ spin_lock(&config_list_lock);
+ cld_sptlrpc = cld->cld_sptlrpc;
+ cld->cld_sptlrpc = NULL;
+ cld_params = cld->cld_params;
+ cld->cld_params = NULL;
+ spin_unlock(&config_list_lock);
if (cld_sptlrpc)
config_log_put(cld_sptlrpc);
+ if (cld_params) {
+ mutex_lock(&cld_params->cld_lock);
+ cld_params->cld_stopping = 1;
+ mutex_unlock(&cld_params->cld_lock);
+ config_log_put(cld_params);
+ }
+
/* drop the ref from the find */
config_log_put(cld);
/* drop the start ref */
RETURN(rc);
}
+int lprocfs_mgc_rd_ir_state(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct obd_device *obd = data;
+ struct obd_import *imp = obd->u.cli.cl_import;
+ struct obd_connect_data *ocd = &imp->imp_connect_data;
+ struct config_llog_data *cld;
+ int rc = 0;
+ ENTRY;
+
+ rc = snprintf(page, count, "imperative_recovery: %s\n",
+ OCD_HAS_FLAG(ocd, IMP_RECOV) ? "ENABLED" : "DISABLED");
+ rc += snprintf(page + rc, count - rc, "client_state:\n");
+
+ spin_lock(&config_list_lock);
+ cfs_list_for_each_entry(cld, &config_llog_list, cld_list_chain) {
+ if (cld->cld_recover == NULL)
+ continue;
+ rc += snprintf(page + rc, count - rc,
+ " - { client: %s, nidtbl_version: %u }\n",
+ cld->cld_logname,
+ cld->cld_recover->cld_cfg.cfg_last_idx);
+ }
+ spin_unlock(&config_list_lock);
+
+ RETURN(rc);
+}
+
/* reenqueue any lost locks */
#define RQ_RUNNING 0x1
#define RQ_NOW 0x2
#define RQ_LATER 0x4
#define RQ_STOP 0x8
-static int rq_state = 0;
-static cfs_waitq_t rq_waitq;
-
-static int mgc_requeue_add(struct config_llog_data *cld, int later);
+static int rq_state = 0;
+static wait_queue_head_t rq_waitq;
+static DECLARE_COMPLETION(rq_exit);
static void do_requeue(struct config_llog_data *cld)
{
- LASSERT(atomic_read(&cld->cld_refcount) > 0);
-
- if (cld->cld_mgcexp->exp_obd->u.cli.cl_conn_count != 0) {
- CDEBUG(D_MGC, "updating log %s\n", cld->cld_logname);
- mgc_process_log(cld->cld_mgcexp->exp_obd, cld);
- } else {
- CDEBUG(D_MGC, "disconnecting, won't update log %s\n",
- cld->cld_logname);
- }
+ int rc = 0;
+ ENTRY;
+ LASSERT(cfs_atomic_read(&cld->cld_refcount) > 0);
+
+ /* Do not run mgc_process_log on a disconnected export or an
+ export which is being disconnected. Take the client
+ semaphore to make the check non-racy. */
+ down_read(&cld->cld_mgcexp->exp_obd->u.cli.cl_sem);
+ if (cld->cld_mgcexp->exp_obd->u.cli.cl_conn_count != 0) {
+ CDEBUG(D_MGC, "updating log %s\n", cld->cld_logname);
+ rc = mgc_process_log(cld->cld_mgcexp->exp_obd, cld);
+ if (rc && rc != -ENOENT)
+ CERROR("failed processing log: %d\n", rc);
+ } else {
+ CDEBUG(D_MGC, "disconnecting, won't update log %s\n",
+ cld->cld_logname);
+ }
+ up_read(&cld->cld_mgcexp->exp_obd->u.cli.cl_sem);
- /* Whether we enqueued again or not in mgc_process_log, we're done
- * with the ref from the old enqueue */
- config_log_put(cld);
+ EXIT;
}
+/* this timeout represents how many seconds MGC should wait before
+ * requeue config and recover lock to the MGS. We need to randomize this
+ * in order to not flood the MGS.
+ */
+#define MGC_TIMEOUT_MIN_SECONDS 5
+#define MGC_TIMEOUT_RAND_CENTISEC 0x1ff /* ~500 */
+
static int mgc_requeue_thread(void *data)
{
- struct l_wait_info lwi_now, lwi_later;
- struct config_llog_data *cld, *cld_next, *cld_prev;
- char name[] = "ll_cfg_requeue";
int rc = 0;
ENTRY;
- ptlrpc_daemonize(name);
-
CDEBUG(D_MGC, "Starting requeue thread\n");
- lwi_later = LWI_TIMEOUT(60 * HZ, NULL, NULL);
- l_wait_event(rq_waitq, rq_state & (RQ_NOW | RQ_STOP), &lwi_later);
-
/* Keep trying failed locks periodically */
- spin_lock(&config_list_lock);
- while (rq_state & (RQ_NOW | RQ_LATER)) {
- /* Any new or requeued lostlocks will change the state */
- rq_state &= ~(RQ_NOW | RQ_LATER);
- spin_unlock(&config_list_lock);
-
- /* Always wait a few seconds to allow the server who
- caused the lock revocation to finish its setup, plus some
- random so everyone doesn't try to reconnect at once. */
- lwi_now = LWI_TIMEOUT(3 * HZ + (ll_rand() & 0xff) * (HZ / 100),
- NULL, NULL);
- l_wait_event(rq_waitq, rq_state & RQ_STOP, &lwi_now);
+ spin_lock(&config_list_lock);
+ rq_state |= RQ_RUNNING;
+ while (1) {
+ struct l_wait_info lwi;
+ struct config_llog_data *cld, *cld_prev;
+ int rand = cfs_rand() & MGC_TIMEOUT_RAND_CENTISEC;
+ int stopped = !!(rq_state & RQ_STOP);
+ int to;
+
+ /* Any new or requeued lostlocks will change the state */
+ rq_state &= ~(RQ_NOW | RQ_LATER);
+ spin_unlock(&config_list_lock);
+
+ /* Always wait a few seconds to allow the server who
+ caused the lock revocation to finish its setup, plus some
+ random so everyone doesn't try to reconnect at once. */
+ to = MGC_TIMEOUT_MIN_SECONDS * HZ;
+ to += rand * HZ / 100; /* rand is centi-seconds */
+ lwi = LWI_TIMEOUT(to, NULL, NULL);
+ l_wait_event(rq_waitq, rq_state & RQ_STOP, &lwi);
/*
* iterate & processing through the list. for each cld, process
* it's guaranteed any item in the list must have
* reference > 0; and if cld_lostlock is set, at
* least one reference is taken by the previous enqueue.
- *
- * Note: releasing a cld might lead to itself and its depended
- * sptlrpc cld be unlinked from the list. to safely iterate
- * we need to take a reference on next cld before processing.
*/
cld_prev = NULL;
- spin_lock(&config_list_lock);
- list_for_each_entry_safe(cld, cld_next, &config_llog_list,
- cld_list_chain) {
- if (cld->cld_list_chain.next != &config_llog_list)
- atomic_inc(&cld_next->cld_refcount);
-
- if (cld->cld_lostlock) {
- if (cld->cld_sptlrpc &&
- cld->cld_sptlrpc->cld_lostlock) {
- cld->cld_sptlrpc->cld_lostlock = 0;
+ spin_lock(&config_list_lock);
+ cfs_list_for_each_entry(cld, &config_llog_list,
+ cld_list_chain) {
+ if (!cld->cld_lostlock)
+ continue;
- spin_unlock(&config_list_lock);
- do_requeue(cld->cld_sptlrpc);
- spin_lock(&config_list_lock);
- LASSERT(cld->cld_lostlock);
- }
+ spin_unlock(&config_list_lock);
- cld->cld_lostlock = 0;
+ LASSERT(cfs_atomic_read(&cld->cld_refcount) > 0);
- spin_unlock(&config_list_lock);
- do_requeue(cld);
- spin_lock(&config_list_lock);
- }
-
-
- if (cld_prev) {
- spin_unlock(&config_list_lock);
+ /* Whether we enqueued again or not in mgc_process_log,
+ * we're done with the ref from the old enqueue */
+ if (cld_prev)
config_log_put(cld_prev);
- spin_lock(&config_list_lock);
- }
-
- cld_prev = cld_next;
- }
- spin_unlock(&config_list_lock);
+ cld_prev = cld;
- /* Wait a bit to see if anyone else needs a requeue */
- l_wait_event(rq_waitq, rq_state & (RQ_NOW | RQ_STOP),
- &lwi_later);
- spin_lock(&config_list_lock);
- }
- /* spinlock and while guarantee RQ_NOW and RQ_LATER are not set */
- rq_state &= ~RQ_RUNNING;
- spin_unlock(&config_list_lock);
-
- CDEBUG(D_MGC, "Ending requeue thread\n");
- RETURN(rc);
+ cld->cld_lostlock = 0;
+ if (likely(!stopped))
+ do_requeue(cld);
+
+ spin_lock(&config_list_lock);
+ }
+ spin_unlock(&config_list_lock);
+ if (cld_prev)
+ config_log_put(cld_prev);
+
+ /* break after scanning the list so that we can drop
+ * refcount to losing lock clds */
+ if (unlikely(stopped)) {
+ spin_lock(&config_list_lock);
+ break;
+ }
+
+ /* Wait a bit to see if anyone else needs a requeue */
+ lwi = (struct l_wait_info) { 0 };
+ l_wait_event(rq_waitq, rq_state & (RQ_NOW | RQ_STOP),
+ &lwi);
+ spin_lock(&config_list_lock);
+ }
+ /* spinlock and while guarantee RQ_NOW and RQ_LATER are not set */
+ rq_state &= ~RQ_RUNNING;
+ spin_unlock(&config_list_lock);
+
+ complete(&rq_exit);
+
+ CDEBUG(D_MGC, "Ending requeue thread\n");
+ RETURN(rc);
}
/* Add a cld to the list to requeue. Start the requeue thread if needed.
We are responsible for dropping the config log reference from here on out. */
-static int mgc_requeue_add(struct config_llog_data *cld, int later)
+static void mgc_requeue_add(struct config_llog_data *cld)
{
- int rc = 0;
+ ENTRY;
- CDEBUG(D_INFO, "log %s: requeue (l=%d r=%d sp=%d st=%x)\n",
- cld->cld_logname, later, atomic_read(&cld->cld_refcount),
+ CDEBUG(D_INFO, "log %s: requeue (r=%d sp=%d st=%x)\n",
+ cld->cld_logname, cfs_atomic_read(&cld->cld_refcount),
cld->cld_stopping, rq_state);
- LASSERT(atomic_read(&cld->cld_refcount) > 0);
+ LASSERT(cfs_atomic_read(&cld->cld_refcount) > 0);
+
+ mutex_lock(&cld->cld_lock);
+ if (cld->cld_stopping || cld->cld_lostlock) {
+ mutex_unlock(&cld->cld_lock);
+ RETURN_EXIT;
+ }
+ /* this refcount will be released in mgc_requeue_thread. */
+ config_log_get(cld);
+ cld->cld_lostlock = 1;
+ mutex_unlock(&cld->cld_lock);
+
+ /* Hold lock for rq_state */
+ spin_lock(&config_list_lock);
+ if (rq_state & RQ_STOP) {
+ spin_unlock(&config_list_lock);
+ cld->cld_lostlock = 0;
+ config_log_put(cld);
+ } else {
+ rq_state |= RQ_NOW;
+ spin_unlock(&config_list_lock);
+ wake_up(&rq_waitq);
+ }
+ EXIT;
+}
- /* Hold lock for rq_state */
- spin_lock(&config_list_lock);
+/********************** class fns **********************/
+static int mgc_local_llog_init(const struct lu_env *env,
+ struct obd_device *obd,
+ struct obd_device *disk)
+{
+ struct llog_ctxt *ctxt;
+ int rc;
- if (cld->cld_stopping || (rq_state & RQ_STOP)) {
- cld->cld_lostlock = 0;
- spin_unlock(&config_list_lock);
- config_log_put(cld);
- RETURN(0);
- }
+ ENTRY;
- cld->cld_lostlock = 1;
+ rc = llog_setup(env, obd, &obd->obd_olg, LLOG_CONFIG_ORIG_CTXT, disk,
+ &llog_osd_ops);
+ if (rc)
+ RETURN(rc);
- if (!(rq_state & RQ_RUNNING)) {
- LASSERT(rq_state == 0);
- rq_state = RQ_RUNNING | (later ? RQ_LATER : RQ_NOW);
- spin_unlock(&config_list_lock);
- rc = cfs_kernel_thread(mgc_requeue_thread, 0,
- CLONE_VM | CLONE_FILES);
- if (rc < 0) {
- CERROR("log %s: cannot start requeue thread (%d),"
- "no more log updates!\n", cld->cld_logname, rc);
- /* Drop the ref, since the rq thread won't */
- cld->cld_lostlock = 0;
- config_log_put(cld);
- rq_state = 0;
- RETURN(rc);
- }
- } else {
- rq_state |= later ? RQ_LATER : RQ_NOW;
- spin_unlock(&config_list_lock);
- cfs_waitq_signal(&rq_waitq);
- }
+ ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
+ LASSERT(ctxt);
+ ctxt->loc_dir = obd->u.cli.cl_mgc_configs_dir;
+ llog_ctxt_put(ctxt);
- RETURN(0);
+ RETURN(0);
}
-/********************** class fns **********************/
+static int mgc_local_llog_fini(const struct lu_env *env,
+ struct obd_device *obd)
+{
+ struct llog_ctxt *ctxt;
-static int mgc_fs_setup(struct obd_device *obd, struct super_block *sb,
- struct vfsmount *mnt)
+ ENTRY;
+
+ ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
+ llog_cleanup(env, ctxt);
+
+ RETURN(0);
+}
+
+static int mgc_fs_setup(struct obd_device *obd, struct super_block *sb)
{
- struct lvfs_run_ctxt saved;
- struct lustre_sb_info *lsi = s2lsi(sb);
- struct client_obd *cli = &obd->u.cli;
- struct dentry *dentry;
- char *label;
- int err = 0;
- ENTRY;
+ struct lustre_sb_info *lsi = s2lsi(sb);
+ struct client_obd *cli = &obd->u.cli;
+ struct lu_fid rfid, fid;
+ struct dt_object *root, *dto;
+ struct lu_env *env;
+ int rc = 0;
+
+ ENTRY;
+
+ LASSERT(lsi);
+ LASSERT(lsi->lsi_dt_dev);
+
+ OBD_ALLOC_PTR(env);
+ if (env == NULL)
+ RETURN(-ENOMEM);
+
+ /* The mgc fs exclusion sem. Only one fs can be setup at a time. */
+ down(&cli->cl_mgc_sem);
+
+ cfs_cleanup_group_info();
+
+ /* Setup the configs dir */
+ rc = lu_env_init(env, LCT_MG_THREAD);
+ if (rc)
+ GOTO(out_err, rc);
+
+ fid.f_seq = FID_SEQ_LOCAL_NAME;
+ fid.f_oid = 1;
+ fid.f_ver = 0;
+ rc = local_oid_storage_init(env, lsi->lsi_dt_dev, &fid,
+ &cli->cl_mgc_los);
+ if (rc)
+ GOTO(out_env, rc);
+
+ rc = dt_root_get(env, lsi->lsi_dt_dev, &rfid);
+ if (rc)
+ GOTO(out_env, rc);
+
+ root = dt_locate_at(env, lsi->lsi_dt_dev, &rfid,
+ &cli->cl_mgc_los->los_dev->dd_lu_dev);
+ if (unlikely(IS_ERR(root)))
+ GOTO(out_los, rc = PTR_ERR(root));
+
+ dto = local_file_find_or_create(env, cli->cl_mgc_los, root,
+ MOUNT_CONFIGS_DIR,
+ S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO);
+ lu_object_put_nocache(env, &root->do_lu);
+ if (IS_ERR(dto))
+ GOTO(out_los, rc = PTR_ERR(dto));
+
+ cli->cl_mgc_configs_dir = dto;
+
+ LASSERT(lsi->lsi_osd_exp->exp_obd->obd_lvfs_ctxt.dt);
+ rc = mgc_local_llog_init(env, obd, lsi->lsi_osd_exp->exp_obd);
+ if (rc)
+ GOTO(out_llog, rc);
+
+ /* We take an obd ref to insure that we can't get to mgc_cleanup
+ * without calling mgc_fs_cleanup first. */
+ class_incref(obd, "mgc_fs", obd);
+
+ /* We keep the cl_mgc_sem until mgc_fs_cleanup */
+ EXIT;
+out_llog:
+ if (rc) {
+ lu_object_put(env, &cli->cl_mgc_configs_dir->do_lu);
+ cli->cl_mgc_configs_dir = NULL;
+ }
+out_los:
+ if (rc < 0) {
+ local_oid_storage_fini(env, cli->cl_mgc_los);
+ cli->cl_mgc_los = NULL;
+ up(&cli->cl_mgc_sem);
+ }
+out_env:
+ lu_env_fini(env);
+out_err:
+ OBD_FREE_PTR(env);
+ return rc;
+}
- LASSERT(lsi);
- LASSERT(lsi->lsi_srv_mnt == mnt);
+static int mgc_fs_cleanup(struct obd_device *obd)
+{
+ struct lu_env env;
+ struct client_obd *cli = &obd->u.cli;
+ int rc;
- /* The mgc fs exclusion sem. Only one fs can be setup at a time. */
- down(&cli->cl_mgc_sem);
+ ENTRY;
- cleanup_group_info();
+ LASSERT(cli->cl_mgc_los != NULL);
- obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
- if (IS_ERR(obd->obd_fsops)) {
- up(&cli->cl_mgc_sem);
- CERROR("No fstype %s rc=%ld\n", MT_STR(lsi->lsi_ldd),
- PTR_ERR(obd->obd_fsops));
- RETURN(PTR_ERR(obd->obd_fsops));
- }
+ rc = lu_env_init(&env, LCT_MG_THREAD);
+ if (rc)
+ GOTO(unlock, rc);
- cli->cl_mgc_vfsmnt = mnt;
- fsfilt_setup(obd, mnt->mnt_sb);
-
- OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
- obd->obd_lvfs_ctxt.pwdmnt = mnt;
- obd->obd_lvfs_ctxt.pwd = mnt->mnt_root;
- obd->obd_lvfs_ctxt.fs = get_ds();
-
- push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
- dentry = lookup_one_len(MOUNT_CONFIGS_DIR, current->fs->pwd,
- strlen(MOUNT_CONFIGS_DIR));
- pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
- if (IS_ERR(dentry)) {
- err = PTR_ERR(dentry);
- CERROR("cannot lookup %s directory: rc = %d\n",
- MOUNT_CONFIGS_DIR, err);
- GOTO(err_ops, err);
- }
- cli->cl_mgc_configs_dir = dentry;
+ mgc_local_llog_fini(&env, obd);
- /* We take an obd ref to insure that we can't get to mgc_cleanup
- without calling mgc_fs_cleanup first. */
- class_incref(obd, "mgc_fs", obd);
+ lu_object_put_nocache(&env, &cli->cl_mgc_configs_dir->do_lu);
+ cli->cl_mgc_configs_dir = NULL;
- label = fsfilt_get_label(obd, mnt->mnt_sb);
- if (label)
- CDEBUG(D_MGC, "MGC using disk labelled=%s\n", label);
+ local_oid_storage_fini(&env, cli->cl_mgc_los);
+ cli->cl_mgc_los = NULL;
+ lu_env_fini(&env);
- /* We keep the cl_mgc_sem until mgc_fs_cleanup */
- RETURN(0);
+unlock:
+ class_decref(obd, "mgc_fs", obd);
+ up(&cli->cl_mgc_sem);
-err_ops:
- fsfilt_put_ops(obd->obd_fsops);
- obd->obd_fsops = NULL;
- cli->cl_mgc_vfsmnt = NULL;
- up(&cli->cl_mgc_sem);
- RETURN(err);
+ RETURN(0);
}
-static int mgc_fs_cleanup(struct obd_device *obd)
+static int mgc_llog_init(const struct lu_env *env, struct obd_device *obd)
{
- struct client_obd *cli = &obd->u.cli;
- int rc = 0;
- ENTRY;
+ struct llog_ctxt *ctxt;
+ int rc;
- LASSERT(cli->cl_mgc_vfsmnt != NULL);
+ ENTRY;
- if (cli->cl_mgc_configs_dir != NULL) {
- struct lvfs_run_ctxt saved;
- push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
- l_dput(cli->cl_mgc_configs_dir);
- cli->cl_mgc_configs_dir = NULL;
- pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
- class_decref(obd, "mgc_fs", obd);
- }
+ /* setup only remote ctxt, the local disk context is switched per each
+ * filesystem during mgc_fs_setup() */
+ rc = llog_setup(env, obd, &obd->obd_olg, LLOG_CONFIG_REPL_CTXT, obd,
+ &llog_client_ops);
+ if (rc)
+ RETURN(rc);
- cli->cl_mgc_vfsmnt = NULL;
- if (obd->obd_fsops)
- fsfilt_put_ops(obd->obd_fsops);
+ ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
+ LASSERT(ctxt);
- up(&cli->cl_mgc_sem);
+ llog_initiator_connect(ctxt);
+ llog_ctxt_put(ctxt);
- RETURN(rc);
+ RETURN(0);
}
-static atomic_t mgc_count = ATOMIC_INIT(0);
+static int mgc_llog_fini(const struct lu_env *env, struct obd_device *obd)
+{
+ struct llog_ctxt *ctxt;
+
+ ENTRY;
+
+ ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
+ if (ctxt)
+ llog_cleanup(env, ctxt);
+
+ RETURN(0);
+}
+
+
+static cfs_atomic_t mgc_count = CFS_ATOMIC_INIT(0);
static int mgc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
{
int rc = 0;
case OBD_CLEANUP_EARLY:
break;
case OBD_CLEANUP_EXPORTS:
- if (atomic_dec_and_test(&mgc_count)) {
- /* Kick the requeue waitq - cld's should all be
- stopping */
- spin_lock(&config_list_lock);
- rq_state |= RQ_STOP;
- spin_unlock(&config_list_lock);
- cfs_waitq_signal(&rq_waitq);
+ if (cfs_atomic_dec_and_test(&mgc_count)) {
+ int running;
+ /* stop requeue thread */
+ spin_lock(&config_list_lock);
+ running = rq_state & RQ_RUNNING;
+ if (running)
+ rq_state |= RQ_STOP;
+ spin_unlock(&config_list_lock);
+ if (running) {
+ wake_up(&rq_waitq);
+ wait_for_completion(&rq_exit);
+ }
}
- rc = obd_llog_finish(obd, 0);
+ obd_cleanup_client_import(obd);
+ rc = mgc_llog_fini(NULL, obd);
if (rc != 0)
CERROR("failed to cleanup llogging subsystems\n");
break;
static int mgc_cleanup(struct obd_device *obd)
{
- struct client_obd *cli = &obd->u.cli;
int rc;
ENTRY;
- LASSERT(cli->cl_mgc_vfsmnt == NULL);
-
/* COMPAT_146 - old config logs may have added profiles we don't
know about */
if (obd->obd_type->typ_refcnt <= 1)
static int mgc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
{
- struct lprocfs_static_vars lvars;
- int rc;
- ENTRY;
-
- ptlrpcd_addref();
-
- rc = client_obd_setup(obd, lcfg);
- if (rc)
- GOTO(err_decref, rc);
-
- rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
- if (rc) {
- CERROR("failed to setup llogging subsystems\n");
- GOTO(err_cleanup, rc);
- }
-
- lprocfs_mgc_init_vars(&lvars);
- lprocfs_obd_setup(obd, lvars.obd_vars);
- sptlrpc_lprocfs_cliobd_attach(obd);
-
- spin_lock(&config_list_lock);
- atomic_inc(&mgc_count);
- if (atomic_read(&mgc_count) == 1) {
- rq_state &= ~RQ_STOP;
- cfs_waitq_init(&rq_waitq);
- }
- spin_unlock(&config_list_lock);
-
- RETURN(rc);
+ struct lprocfs_static_vars lvars;
+ int rc;
+ ENTRY;
+
+ rc = ptlrpcd_addref();
+ if (rc < 0)
+ RETURN(rc);
+
+ rc = client_obd_setup(obd, lcfg);
+ if (rc)
+ GOTO(err_decref, rc);
+
+ rc = mgc_llog_init(NULL, obd);
+ if (rc) {
+ CERROR("failed to setup llogging subsystems\n");
+ GOTO(err_cleanup, rc);
+ }
+
+ lprocfs_mgc_init_vars(&lvars);
+ lprocfs_obd_setup(obd, lvars.obd_vars);
+ sptlrpc_lprocfs_cliobd_attach(obd);
+
+ if (cfs_atomic_inc_return(&mgc_count) == 1) {
+ rq_state = 0;
+ init_waitqueue_head(&rq_waitq);
+
+ /* start requeue thread */
+ rc = PTR_ERR(kthread_run(mgc_requeue_thread, NULL,
+ "ll_cfg_requeue"));
+ if (IS_ERR_VALUE(rc)) {
+ CERROR("%s: Cannot start requeue thread (%d),"
+ "no more log updates!\n",
+ obd->obd_name, rc);
+ GOTO(err_cleanup, rc);
+ }
+ /* rc is the task_struct pointer of mgc_requeue_thread. */
+ rc = 0;
+ }
+
+ RETURN(rc);
err_cleanup:
- client_obd_cleanup(obd);
+ client_obd_cleanup(obd);
err_decref:
- ptlrpcd_decref();
- RETURN(rc);
+ ptlrpcd_decref();
+ RETURN(rc);
}
/* based on ll_mdc_blocking_ast */
/* mgs wants the lock, give it up... */
LDLM_DEBUG(lock, "MGC blocking CB");
ldlm_lock2handle(lock, &lockh);
- rc = ldlm_cli_cancel(&lockh);
- break;
- case LDLM_CB_CANCELING: {
- /* We've given up the lock, prepare ourselves to update. */
- LDLM_DEBUG(lock, "MGC cancel CB");
+ rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
+ break;
+ case LDLM_CB_CANCELING:
+ /* We've given up the lock, prepare ourselves to update. */
+ LDLM_DEBUG(lock, "MGC cancel CB");
- CDEBUG(D_MGC, "Lock res "LPX64" (%.8s)\n",
- lock->l_resource->lr_name.name[0],
- (char *)&lock->l_resource->lr_name.name[0]);
+ CDEBUG(D_MGC, "Lock res "DLDLMRES" (%.8s)\n",
+ PLDLMRES(lock->l_resource),
+ (char *)&lock->l_resource->lr_name.name[0]);
if (!cld) {
- CERROR("missing data, won't requeue\n");
+ CDEBUG(D_INFO, "missing data, won't requeue\n");
break;
}
+
+ /* held at mgc_process_log(). */
+ LASSERT(cfs_atomic_read(&cld->cld_refcount) > 0);
/* Are we done with this log? */
if (cld->cld_stopping) {
CDEBUG(D_MGC, "log %s: stopping, won't requeue\n",
(we get called from client_disconnect_export) */
if (!lock->l_conn_export ||
!lock->l_conn_export->exp_obd->u.cli.cl_conn_count) {
- CDEBUG(D_MGC, "log %s: disconnecting, won't requeue\n",
+ CDEBUG(D_MGC, "log %.8s: disconnecting, won't requeue\n",
cld->cld_logname);
config_log_put(cld);
break;
}
- /* Did we fail to get the lock? */
- if (lock->l_req_mode != lock->l_granted_mode &&
- !cld->cld_is_sptlrpc) {
- CDEBUG(D_MGC, "log %s: original grant failed, will "
- "requeue later\n", cld->cld_logname);
- /* Try to re-enqueue later */
- rc = mgc_requeue_add(cld, 1);
- break;
- }
+
/* Re-enqueue now */
- rc = mgc_requeue_add(cld, 0);
+ mgc_requeue_add(cld);
+ config_log_put(cld);
break;
- }
default:
LBUG();
}
-
- if (rc) {
- CERROR("%s CB failed %d:\n", flag == LDLM_CB_BLOCKING ?
- "blocking" : "cancel", rc);
- LDLM_ERROR(lock, "MGC ast");
- }
RETURN(rc);
}
+/* Not sure where this should go... */
+#define MGC_ENQUEUE_LIMIT 50
+#define MGC_TARGET_REG_LIMIT 10
+#define MGC_SEND_PARAM_LIMIT 10
+
/* Send parameter to MGS*/
static int mgc_set_mgs_param(struct obd_export *exp,
struct mgs_send_param *msp)
{
struct ptlrpc_request *req;
struct mgs_send_param *req_msp, *rep_msp;
- int size[] = { sizeof(struct ptlrpc_body), sizeof(*req_msp) };
- __u32 rep_size[] = { sizeof(struct ptlrpc_body), sizeof(*msp) };
int rc;
ENTRY;
- req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_MGS_VERSION,
- MGS_SET_INFO, 2, size, NULL);
+ req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
+ &RQF_MGS_SET_INFO, LUSTRE_MGS_VERSION,
+ MGS_SET_INFO);
if (!req)
RETURN(-ENOMEM);
- req_msp = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(*req_msp));
+ req_msp = req_capsule_client_get(&req->rq_pill, &RMF_MGS_SEND_PARAM);
if (!req_msp) {
ptlrpc_req_finished(req);
RETURN(-ENOMEM);
}
memcpy(req_msp, msp, sizeof(*req_msp));
- ptlrpc_req_set_repsize(req, 2, rep_size);
+ ptlrpc_request_set_replen(req);
+ /* Limit how long we will wait for the enqueue to complete */
+ req->rq_delay_limit = MGC_SEND_PARAM_LIMIT;
rc = ptlrpc_queue_wait(req);
if (!rc) {
- rep_msp = lustre_swab_repbuf(req, REPLY_REC_OFF,
- sizeof(*rep_msp), NULL);
+ rep_msp = req_capsule_server_get(&req->rq_pill, &RMF_MGS_SEND_PARAM);
memcpy(msp, rep_msp, sizeof(*rep_msp));
}
/* Take a config lock so we can get cancel notifications */
static int mgc_enqueue(struct obd_export *exp, struct lov_stripe_md *lsm,
__u32 type, ldlm_policy_data_t *policy, __u32 mode,
- int *flags, void *bl_cb, void *cp_cb, void *gl_cb,
- void *data, __u32 lvb_len, void *lvb_swabber,
- struct lustre_handle *lockh)
+ __u64 *flags, void *bl_cb, void *cp_cb, void *gl_cb,
+ void *data, __u32 lvb_len, void *lvb_swabber,
+ struct lustre_handle *lockh)
{
- struct config_llog_data *cld = (struct config_llog_data *)data;
- struct ldlm_enqueue_info einfo = { type, mode, mgc_blocking_ast,
- ldlm_completion_ast, NULL, NULL, data};
-
- int rc;
- ENTRY;
+ struct config_llog_data *cld = (struct config_llog_data *)data;
+ struct ldlm_enqueue_info einfo = {
+ .ei_type = type,
+ .ei_mode = mode,
+ .ei_cb_bl = mgc_blocking_ast,
+ .ei_cb_cp = ldlm_completion_ast,
+ };
+ struct ptlrpc_request *req;
+ int short_limit = cld_is_sptlrpc(cld);
+ int rc;
+ ENTRY;
CDEBUG(D_MGC, "Enqueue for %s (res "LPX64")\n", cld->cld_logname,
cld->cld_resid.name[0]);
- /* We can only drop this config log ref when we drop the lock */
- if (config_log_get(cld))
- RETURN(ELDLM_LOCK_ABORTED);
-
/* We need a callback for every lockholder, so don't try to
ldlm_lock_match (see rev 1.1.2.11.2.47) */
+ req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
+ &RQF_LDLM_ENQUEUE, LUSTRE_DLM_VERSION,
+ LDLM_ENQUEUE);
+ if (req == NULL)
+ RETURN(-ENOMEM);
- rc = ldlm_cli_enqueue(exp, NULL, &einfo, &cld->cld_resid,
- NULL, flags, NULL, 0, NULL, lockh, 0);
+ req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER, 0);
+ ptlrpc_request_set_replen(req);
+
+ /* check if this is server or client */
+ if (cld->cld_cfg.cfg_sb) {
+ struct lustre_sb_info *lsi = s2lsi(cld->cld_cfg.cfg_sb);
+ if (lsi && IS_SERVER(lsi))
+ short_limit = 1;
+ }
+ /* Limit how long we will wait for the enqueue to complete */
+ req->rq_delay_limit = short_limit ? 5 : MGC_ENQUEUE_LIMIT;
+ rc = ldlm_cli_enqueue(exp, &req, &einfo, &cld->cld_resid, NULL, flags,
+ NULL, 0, LVB_T_NONE, lockh, 0);
/* A failed enqueue should still call the mgc_blocking_ast,
where it will be requeued if needed ("grant failed"). */
-
+ ptlrpc_req_finished(req);
RETURN(rc);
}
RETURN(0);
}
-#if 0
-static int mgc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
- void *karg, void *uarg)
+static void mgc_notify_active(struct obd_device *unused)
{
- struct obd_device *obd = exp->exp_obd;
- struct obd_ioctl_data *data = karg;
- struct llog_ctxt *ctxt;
- struct lvfs_run_ctxt saved;
- int rc;
- ENTRY;
-
- if (!try_module_get(THIS_MODULE)) {
- CERROR("Can't get module. Is it alive?");
- return -EINVAL;
- }
- switch (cmd) {
- /* REPLicator context */
- case OBD_IOC_PARSE: {
- CERROR("MGC parsing llog %s\n", data->ioc_inlbuf1);
- ctxt = llog_get_context(exp->exp_obd, LLOG_CONFIG_REPL_CTXT);
- rc = class_config_parse_llog(ctxt, data->ioc_inlbuf1, NULL);
- GOTO(out, rc);
- }
-#ifdef __KERNEL__
- case OBD_IOC_LLOG_INFO:
- case OBD_IOC_LLOG_PRINT: {
- ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
- rc = llog_ioctl(ctxt, cmd, data);
-
- GOTO(out, rc);
- }
-#endif
- /* ORIGinator context */
- case OBD_IOC_DUMP_LOG: {
- 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);
+ /* wakeup mgc_requeue_thread to requeue mgc lock */
+ spin_lock(&config_list_lock);
+ rq_state |= RQ_NOW;
+ spin_unlock(&config_list_lock);
+ wake_up(&rq_waitq);
- GOTO(out, rc);
- }
- default:
- CERROR("mgc_ioctl(): unrecognised ioctl %#x\n", cmd);
- GOTO(out, rc = -ENOTTY);
- }
-out:
- module_put(THIS_MODULE);
-
- return rc;
+ /* TODO: Help the MGS rebuild nidtbl. -jay */
}
-#endif
/* Send target_reg message to MGS */
static int mgc_target_register(struct obd_export *exp,
memcpy(req_mti, mti, sizeof(*req_mti));
ptlrpc_request_set_replen(req);
CDEBUG(D_MGC, "register %s\n", mti->mti_svname);
+ /* Limit how long we will wait for the enqueue to complete */
+ req->rq_delay_limit = MGC_TARGET_REG_LIMIT;
rc = ptlrpc_queue_wait(req);
if (!rc) {
RETURN(rc);
}
-int mgc_set_info_async(struct obd_export *exp, obd_count keylen,
- void *key, obd_count vallen, void *val,
- struct ptlrpc_request_set *set)
+int mgc_set_info_async(const struct lu_env *env, struct obd_export *exp,
+ obd_count keylen, void *key, obd_count vallen,
+ void *val, struct ptlrpc_request_set *set)
{
- struct obd_import *imp = class_exp2cliimp(exp);
int rc = -EINVAL;
ENTRY;
- /* Try to "recover" the initial connection; i.e. retry */
- if (KEY_IS(KEY_INIT_RECOV)) {
- if (vallen != sizeof(int))
- RETURN(-EINVAL);
- spin_lock(&imp->imp_lock);
- imp->imp_initial_recov = *(int *)val;
- spin_unlock(&imp->imp_lock);
- CDEBUG(D_HA, "%s: set imp_initial_recov = %d\n",
- exp->exp_obd->obd_name, imp->imp_initial_recov);
- RETURN(0);
- }
/* Turn off initial_recov after we try all backup servers once */
if (KEY_IS(KEY_INIT_RECOV_BACKUP)) {
+ struct obd_import *imp = class_exp2cliimp(exp);
int value;
if (vallen != sizeof(int))
RETURN(-EINVAL);
value = *(int *)val;
- spin_lock(&imp->imp_lock);
- imp->imp_initial_recov_bk = value > 0;
- /* Even after the initial connection, give up all comms if
- nobody answers the first time. */
- imp->imp_recon_bk = 1;
- spin_unlock(&imp->imp_lock);
- CDEBUG(D_MGC, "InitRecov %s %d/%d:d%d:i%d:r%d:or%d:%s\n",
- imp->imp_obd->obd_name, value, imp->imp_initial_recov,
+ CDEBUG(D_MGC, "InitRecov %s %d/d%d:i%d:r%d:or%d:%s\n",
+ imp->imp_obd->obd_name, value,
imp->imp_deactive, imp->imp_invalid,
imp->imp_replayable, imp->imp_obd->obd_replayable,
ptlrpc_import_state_name(imp->imp_state));
/* Resurrect if we previously died */
- if (imp->imp_invalid || value > 1)
+ if ((imp->imp_state != LUSTRE_IMP_FULL &&
+ imp->imp_state != LUSTRE_IMP_NEW) || value > 1)
ptlrpc_reconnect_import(imp);
RETURN(0);
}
rc = mgc_target_register(exp, mti);
RETURN(rc);
}
- if (KEY_IS(KEY_SET_FS)) {
- struct super_block *sb = (struct super_block *)val;
- struct lustre_sb_info *lsi;
- if (vallen != sizeof(struct super_block))
- RETURN(-EINVAL);
- lsi = s2lsi(sb);
- rc = mgc_fs_setup(exp->exp_obd, sb, lsi->lsi_srv_mnt);
- if (rc) {
- CERROR("set_fs got %d\n", rc);
- }
- RETURN(rc);
- }
- if (KEY_IS(KEY_CLEAR_FS)) {
- if (vallen != 0)
- RETURN(-EINVAL);
- rc = mgc_fs_cleanup(exp->exp_obd);
- if (rc) {
- CERROR("clear_fs got %d\n", rc);
- }
- RETURN(rc);
- }
+ if (KEY_IS(KEY_SET_FS)) {
+ struct super_block *sb = (struct super_block *)val;
+
+ if (vallen != sizeof(struct super_block))
+ RETURN(-EINVAL);
+
+ rc = mgc_fs_setup(exp->exp_obd, sb);
+ RETURN(rc);
+ }
+ if (KEY_IS(KEY_CLEAR_FS)) {
+ if (vallen != 0)
+ RETURN(-EINVAL);
+ rc = mgc_fs_cleanup(exp->exp_obd);
+ RETURN(rc);
+ }
if (KEY_IS(KEY_SET_INFO)) {
struct mgs_send_param *msp;
RETURN(rc);
}
+static int mgc_get_info(const struct lu_env *env, struct obd_export *exp,
+ __u32 keylen, void *key, __u32 *vallen, void *val,
+ struct lov_stripe_md *unused)
+{
+ int rc = -EINVAL;
+
+ if (KEY_IS(KEY_CONN_DATA)) {
+ struct obd_import *imp = class_exp2cliimp(exp);
+ struct obd_connect_data *data = val;
+
+ if (*vallen == sizeof(*data)) {
+ *data = imp->imp_connect_data;
+ rc = 0;
+ }
+ }
+
+ return rc;
+}
+
static int mgc_import_event(struct obd_device *obd,
struct obd_import *imp,
enum obd_import_event event)
switch (event) {
case IMP_EVENT_DISCON:
/* MGC imports should not wait for recovery */
+ if (OCD_HAS_FLAG(&imp->imp_connect_data, IMP_RECOV))
+ ptlrpc_pinger_ir_down();
break;
case IMP_EVENT_INACTIVE:
break;
ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
break;
}
- case IMP_EVENT_ACTIVE:
- LCONSOLE_WARN("%s: Reactivating import\n", obd->obd_name);
- /* Clearing obd_no_recov allows us to continue pinging */
- obd->obd_no_recov = 0;
- break;
+ case IMP_EVENT_ACTIVE:
+ CDEBUG(D_INFO, "%s: Reactivating import\n", obd->obd_name);
+ /* Clearing obd_no_recov allows us to continue pinging */
+ obd->obd_no_recov = 0;
+ mgc_notify_active(obd);
+ if (OCD_HAS_FLAG(&imp->imp_connect_data, IMP_RECOV))
+ ptlrpc_pinger_ir_up();
+ break;
case IMP_EVENT_OCD:
break;
+ case IMP_EVENT_DEACTIVATE:
+ case IMP_EVENT_ACTIVATE:
+ break;
default:
CERROR("Unknown import event %#x\n", event);
LBUG();
RETURN(rc);
}
-static int mgc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
- struct obd_device *tgt, int *index)
+enum {
+ CONFIG_READ_NRPAGES_INIT = 1 << (20 - PAGE_CACHE_SHIFT),
+ CONFIG_READ_NRPAGES = 4
+};
+
+static int mgc_apply_recover_logs(struct obd_device *mgc,
+ struct config_llog_data *cld,
+ __u64 max_version,
+ void *data, int datalen, bool mne_swab)
{
- struct llog_ctxt *ctxt;
- int rc;
+ struct config_llog_instance *cfg = &cld->cld_cfg;
+ struct lustre_sb_info *lsi = s2lsi(cfg->cfg_sb);
+ struct mgs_nidtbl_entry *entry;
+ struct lustre_cfg *lcfg;
+ struct lustre_cfg_bufs bufs;
+ u64 prev_version = 0;
+ char *inst;
+ char *buf;
+ int bufsz;
+ int pos;
+ int rc = 0;
+ int off = 0;
ENTRY;
- LASSERT(olg == &obd->obd_olg);
+ LASSERT(cfg->cfg_instance != NULL);
+ LASSERT(cfg->cfg_sb == cfg->cfg_instance);
- rc = llog_setup(obd, olg, LLOG_CONFIG_ORIG_CTXT, tgt, 0, NULL,
- &llog_lvfs_ops);
- if (rc)
- RETURN(rc);
+ OBD_ALLOC(inst, PAGE_CACHE_SIZE);
+ if (inst == NULL)
+ RETURN(-ENOMEM);
- rc = llog_setup(obd, olg, LLOG_CONFIG_REPL_CTXT, tgt, 0, NULL,
- &llog_client_ops);
- if (rc == 0) {
- ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
- if (!ctxt) {
- ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
- if (ctxt)
- llog_cleanup(ctxt);
- RETURN(-ENODEV);
- }
- llog_initiator_connect(ctxt);
- llog_ctxt_put(ctxt);
+ if (!IS_SERVER(lsi)) {
+ pos = snprintf(inst, PAGE_CACHE_SIZE, "%p", cfg->cfg_instance);
+ if (pos >= PAGE_CACHE_SIZE) {
+ OBD_FREE(inst, PAGE_CACHE_SIZE);
+ return -E2BIG;
+ }
} else {
- ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
- if (ctxt)
- llog_cleanup(ctxt);
+ LASSERT(IS_MDT(lsi));
+ rc = server_name2svname(lsi->lsi_svname, inst, NULL,
+ PAGE_CACHE_SIZE);
+ if (rc) {
+ OBD_FREE(inst, PAGE_CACHE_SIZE);
+ RETURN(-EINVAL);
+ }
+ pos = strlen(inst);
}
- RETURN(rc);
-}
+ ++pos;
+ buf = inst + pos;
+ bufsz = PAGE_CACHE_SIZE - pos;
+
+ while (datalen > 0) {
+ int entry_len = sizeof(*entry);
+ int is_ost;
+ struct obd_device *obd;
+ char *obdname;
+ char *cname;
+ char *params;
+ char *uuid;
+
+ rc = -EINVAL;
+ if (datalen < sizeof(*entry))
+ break;
-static int mgc_llog_finish(struct obd_device *obd, int count)
-{
- struct llog_ctxt *ctxt;
- int rc = 0, rc2 = 0;
- ENTRY;
+ entry = (typeof(entry))(data + off);
- ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
- if (ctxt)
- rc = llog_cleanup(ctxt);
+ /* sanity check */
+ if (entry->mne_nid_type != 0) /* only support type 0 for ipv4 */
+ break;
+ if (entry->mne_nid_count == 0) /* at least one nid entry */
+ break;
+ if (entry->mne_nid_size != sizeof(lnet_nid_t))
+ break;
- ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
- if (ctxt)
- rc2 = llog_cleanup(ctxt);
+ entry_len += entry->mne_nid_count * entry->mne_nid_size;
+ if (datalen < entry_len) /* must have entry_len at least */
+ break;
- if (!rc)
- rc = rc2;
+ /* Keep this swab for normal mixed endian handling. LU-1644 */
+ if (mne_swab)
+ lustre_swab_mgs_nidtbl_entry(entry);
+ if (entry->mne_length > PAGE_CACHE_SIZE) {
+ CERROR("MNE too large (%u)\n", entry->mne_length);
+ break;
+ }
- RETURN(rc);
-}
+ if (entry->mne_length < entry_len)
+ break;
-/* identical to mgs_log_is_empty */
-static int mgc_llog_is_empty(struct obd_device *obd, struct llog_ctxt *ctxt,
- char *name)
-{
- struct lvfs_run_ctxt saved;
- struct llog_handle *llh;
- int rc = 0;
+ off += entry->mne_length;
+ datalen -= entry->mne_length;
+ if (datalen < 0)
+ break;
- push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
- rc = llog_create(ctxt, &llh, NULL, name);
- if (rc == 0) {
- llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
- rc = llog_get_size(llh);
- llog_close(llh);
- }
- pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
- /* header is record 1 */
- return(rc <= 1);
-}
+ if (entry->mne_version > max_version) {
+ CERROR("entry index(%lld) is over max_index(%lld)\n",
+ entry->mne_version, max_version);
+ break;
+ }
-static int mgc_copy_handler(struct llog_handle *llh, struct llog_rec_hdr *rec,
- void *data)
-{
- struct llog_rec_hdr local_rec = *rec;
- struct llog_handle *local_llh = (struct llog_handle *)data;
- char *cfg_buf = (char*) (rec + 1);
- struct lustre_cfg *lcfg;
- int rc = 0;
- ENTRY;
+ if (prev_version >= entry->mne_version) {
+ CERROR("index unsorted, prev %lld, now %lld\n",
+ prev_version, entry->mne_version);
+ break;
+ }
+ prev_version = entry->mne_version;
+
+ /*
+ * Write a string with format "nid::instance" to
+ * lustre/<osc|mdc>/<target>-<osc|mdc>-<instance>/import.
+ */
- /* Append all records */
- local_rec.lrh_len -= sizeof(*rec) + sizeof(struct llog_rec_tail);
- rc = llog_write_rec(local_llh, &local_rec, NULL, 0,
- (void *)cfg_buf, -1);
+ is_ost = entry->mne_type == LDD_F_SV_TYPE_OST;
+ memset(buf, 0, bufsz);
+ obdname = buf;
+ pos = 0;
+
+ /* lustre-OST0001-osc-<instance #> */
+ strcpy(obdname, cld->cld_logname);
+ cname = strrchr(obdname, '-');
+ if (cname == NULL) {
+ CERROR("mgc %s: invalid logname %s\n",
+ mgc->obd_name, obdname);
+ break;
+ }
- lcfg = (struct lustre_cfg *)cfg_buf;
- CDEBUG(D_INFO, "idx=%d, rc=%d, len=%d, cmd %x %s %s\n",
- rec->lrh_index, rc, rec->lrh_len, lcfg->lcfg_command,
- lustre_cfg_string(lcfg, 0), lustre_cfg_string(lcfg, 1));
+ pos = cname - obdname;
+ obdname[pos] = 0;
+ pos += sprintf(obdname + pos, "-%s%04x",
+ is_ost ? "OST" : "MDT", entry->mne_index);
+
+ cname = is_ost ? "osc" : "mdc",
+ pos += sprintf(obdname + pos, "-%s-%s", cname, inst);
+ lustre_cfg_bufs_reset(&bufs, obdname);
+
+ /* find the obd by obdname */
+ obd = class_name2obd(obdname);
+ if (obd == NULL) {
+ CDEBUG(D_INFO, "mgc %s: cannot find obdname %s\n",
+ mgc->obd_name, obdname);
+ rc = 0;
+ /* this is a safe race, when the ost is starting up...*/
+ continue;
+ }
+ /* osc.import = "connection=<Conn UUID>::<target instance>" */
+ ++pos;
+ params = buf + pos;
+ pos += sprintf(params, "%s.import=%s", cname, "connection=");
+ uuid = buf + pos;
+
+ down_read(&obd->u.cli.cl_sem);
+ if (obd->u.cli.cl_import == NULL) {
+ /* client does not connect to the OST yet */
+ up_read(&obd->u.cli.cl_sem);
+ rc = 0;
+ continue;
+ }
+
+ /* TODO: iterate all nids to find one */
+ /* find uuid by nid */
+ rc = client_import_find_conn(obd->u.cli.cl_import,
+ entry->u.nids[0],
+ (struct obd_uuid *)uuid);
+ up_read(&obd->u.cli.cl_sem);
+ if (rc < 0) {
+ CERROR("mgc: cannot find uuid by nid %s\n",
+ libcfs_nid2str(entry->u.nids[0]));
+ break;
+ }
+
+ CDEBUG(D_INFO, "Find uuid %s by nid %s\n",
+ uuid, libcfs_nid2str(entry->u.nids[0]));
+
+ pos += strlen(uuid);
+ pos += sprintf(buf + pos, "::%u", entry->mne_instance);
+ LASSERT(pos < bufsz);
+
+ lustre_cfg_bufs_set_string(&bufs, 1, params);
+
+ rc = -ENOMEM;
+ lcfg = lustre_cfg_new(LCFG_PARAM, &bufs);
+ if (lcfg == NULL) {
+ CERROR("mgc: cannot allocate memory\n");
+ break;
+ }
+
+ CDEBUG(D_INFO, "ir apply logs "LPD64"/"LPD64" for %s -> %s\n",
+ prev_version, max_version, obdname, params);
+
+ rc = class_process_config(lcfg);
+ lustre_cfg_free(lcfg);
+ if (rc)
+ CDEBUG(D_INFO, "process config for %s error %d\n",
+ obdname, rc);
+
+ /* continue, even one with error */
+ }
+
+ OBD_FREE(inst, PAGE_CACHE_SIZE);
RETURN(rc);
}
-/* Copy a remote log locally */
-static int mgc_copy_llog(struct obd_device *obd, struct llog_ctxt *rctxt,
- struct llog_ctxt *lctxt, char *logname)
+/**
+ * This function is called if this client was notified for target restarting
+ * by the MGS. A CONFIG_READ RPC is going to send to fetch recovery logs.
+ */
+static int mgc_process_recover_log(struct obd_device *obd,
+ struct config_llog_data *cld)
{
- struct llog_handle *local_llh, *remote_llh;
- struct obd_uuid *uuid;
- char *temp_log;
- int rc, rc2;
+ struct ptlrpc_request *req = NULL;
+ struct config_llog_instance *cfg = &cld->cld_cfg;
+ struct mgs_config_body *body;
+ struct mgs_config_res *res;
+ struct ptlrpc_bulk_desc *desc;
+ struct page **pages;
+ int nrpages;
+ bool eof = true;
+ bool mne_swab = false;
+ int i;
+ int ealen;
+ int rc;
ENTRY;
- /* Write new log to a temp name, then vfs_rename over logname
- upon successful completion. */
+ /* allocate buffer for bulk transfer.
+ * if this is the first time for this mgs to read logs,
+ * CONFIG_READ_NRPAGES_INIT will be used since it will read all logs
+ * once; otherwise, it only reads increment of logs, this should be
+ * small and CONFIG_READ_NRPAGES will be used.
+ */
+ nrpages = CONFIG_READ_NRPAGES;
+ if (cfg->cfg_last_idx == 0) /* the first time */
+ nrpages = CONFIG_READ_NRPAGES_INIT;
+
+ OBD_ALLOC(pages, sizeof(*pages) * nrpages);
+ if (pages == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ for (i = 0; i < nrpages; i++) {
+ pages[i] = alloc_page(GFP_IOFS);
+ if (pages[i] == NULL)
+ GOTO(out, rc = -ENOMEM);
+ }
- OBD_ALLOC(temp_log, strlen(logname) + 1);
- if (!temp_log)
- RETURN(-ENOMEM);
- sprintf(temp_log, "%sT", logname);
+again:
+ LASSERT(cld_is_recover(cld));
+ LASSERT(mutex_is_locked(&cld->cld_lock));
+ req = ptlrpc_request_alloc(class_exp2cliimp(cld->cld_mgcexp),
+ &RQF_MGS_CONFIG_READ);
+ if (req == NULL)
+ GOTO(out, rc = -ENOMEM);
- /* Make sure there's no old temp log */
- rc = llog_create(lctxt, &local_llh, NULL, temp_log);
- if (rc)
- GOTO(out, rc);
- rc = llog_init_handle(local_llh, LLOG_F_IS_PLAIN, NULL);
+ rc = ptlrpc_request_pack(req, LUSTRE_MGS_VERSION, MGS_CONFIG_READ);
if (rc)
GOTO(out, rc);
- rc = llog_destroy(local_llh);
- llog_free_handle(local_llh);
+
+ /* pack request */
+ body = req_capsule_client_get(&req->rq_pill, &RMF_MGS_CONFIG_BODY);
+ LASSERT(body != NULL);
+ LASSERT(sizeof(body->mcb_name) > strlen(cld->cld_logname));
+ if (strlcpy(body->mcb_name, cld->cld_logname, sizeof(body->mcb_name))
+ >= sizeof(body->mcb_name))
+ GOTO(out, rc = -E2BIG);
+ body->mcb_offset = cfg->cfg_last_idx + 1;
+ body->mcb_type = cld->cld_type;
+ body->mcb_bits = PAGE_CACHE_SHIFT;
+ body->mcb_units = nrpages;
+
+ /* allocate bulk transfer descriptor */
+ desc = ptlrpc_prep_bulk_imp(req, nrpages, 1, BULK_PUT_SINK,
+ MGS_BULK_PORTAL);
+ if (desc == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ for (i = 0; i < nrpages; i++)
+ ptlrpc_prep_bulk_page_pin(desc, pages[i], 0, PAGE_CACHE_SIZE);
+
+ ptlrpc_request_set_replen(req);
+ rc = ptlrpc_queue_wait(req);
if (rc)
GOTO(out, rc);
- /* open local log */
- rc = llog_create(lctxt, &local_llh, NULL, temp_log);
- if (rc)
+ res = req_capsule_server_get(&req->rq_pill, &RMF_MGS_CONFIG_RES);
+ if (res->mcr_size < res->mcr_offset)
+ GOTO(out, rc = -EINVAL);
+
+ /* always update the index even though it might have errors with
+ * handling the recover logs */
+ cfg->cfg_last_idx = res->mcr_offset;
+ eof = res->mcr_offset == res->mcr_size;
+
+ CDEBUG(D_INFO, "Latest version "LPD64", more %d.\n",
+ res->mcr_offset, eof == false);
+
+ ealen = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, 0);
+ if (ealen < 0)
+ GOTO(out, rc = ealen);
+
+ if (ealen > nrpages << PAGE_CACHE_SHIFT)
+ GOTO(out, rc = -EINVAL);
+
+ if (ealen == 0) { /* no logs transferred */
+ if (!eof)
+ rc = -EINVAL;
GOTO(out, rc);
+ }
- /* set the log header uuid for fun */
- OBD_ALLOC_PTR(uuid);
- obd_str2uuid(uuid, logname);
- rc = llog_init_handle(local_llh, LLOG_F_IS_PLAIN, uuid);
- OBD_FREE_PTR(uuid);
- if (rc)
- GOTO(out_closel, rc);
+ mne_swab = !!ptlrpc_rep_need_swab(req);
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 2, 50, 0)
+ /* This import flag means the server did an extra swab of IR MNE
+ * records (fixed in LU-1252), reverse it here if needed. LU-1644 */
+ if (unlikely(req->rq_import->imp_need_mne_swab))
+ mne_swab = !mne_swab;
+#else
+#warning "LU-1644: Remove old OBD_CONNECT_MNE_SWAB fixup and imp_need_mne_swab"
+#endif
- /* open remote log */
- rc = llog_create(rctxt, &remote_llh, NULL, logname);
- if (rc)
- GOTO(out_closel, rc);
- rc = llog_init_handle(remote_llh, LLOG_F_IS_PLAIN, NULL);
- if (rc)
- GOTO(out_closer, rc);
-
- /* Copy remote log */
- rc = llog_process(remote_llh, mgc_copy_handler,(void *)local_llh, NULL);
-
-out_closer:
- rc2 = llog_close(remote_llh);
- if (!rc)
- rc = rc2;
-out_closel:
- rc2 = llog_close(local_llh);
- if (!rc)
- rc = rc2;
-
- /* We've copied the remote log to the local temp log, now
- replace the old local log with the temp log. */
- if (!rc) {
- struct client_obd *cli = &obd->u.cli;
- LASSERT(cli);
- LASSERT(cli->cl_mgc_configs_dir);
- rc = lustre_rename(cli->cl_mgc_configs_dir, cli->cl_mgc_vfsmnt,
- temp_log, logname);
+ for (i = 0; i < nrpages && ealen > 0; i++) {
+ int rc2;
+ void *ptr;
+
+ ptr = kmap(pages[i]);
+ rc2 = mgc_apply_recover_logs(obd, cld, res->mcr_offset, ptr,
+ min_t(int, ealen, PAGE_CACHE_SIZE),
+ mne_swab);
+ kunmap(pages[i]);
+ if (rc2 < 0) {
+ CWARN("Process recover log %s error %d\n",
+ cld->cld_logname, rc2);
+ break;
+ }
+
+ ealen -= PAGE_CACHE_SIZE;
}
- CDEBUG(D_MGC, "Copied remote log %s (%d)\n", logname, rc);
+
out:
- if (rc)
- CERROR("Failed to copy remote log %s (%d)\n", logname, rc);
- OBD_FREE(temp_log, strlen(logname) + 1);
- RETURN(rc);
+ if (req)
+ ptlrpc_req_finished(req);
+
+ if (rc == 0 && !eof)
+ goto again;
+
+ if (pages) {
+ for (i = 0; i < nrpages; i++) {
+ if (pages[i] == NULL)
+ break;
+ __free_page(pages[i]);
+ }
+ OBD_FREE(pages, sizeof(*pages) * nrpages);
+ }
+ return rc;
}
-/* Get a config log from the MGS and process it.
- This func is called for both clients and servers. */
-int mgc_process_log(struct obd_device *mgc,
- struct config_llog_data *cld)
+/* Copy a remote log locally */
+static int mgc_llog_local_copy(const struct lu_env *env,
+ struct obd_device *obd,
+ struct llog_ctxt *rctxt,
+ struct llog_ctxt *lctxt, char *logname)
{
- struct llog_ctxt *ctxt, *lctxt;
- struct lustre_handle lockh;
- struct client_obd *cli = &mgc->u.cli;
- struct lvfs_run_ctxt saved;
- struct lustre_sb_info *lsi = NULL;
- int rc = 0, rcl, flags = 0, must_pop = 0;
+ char *temp_log;
+ int rc;
+
+ ENTRY;
+
+ /*
+ * - copy it to backup using llog_backup()
+ * - copy remote llog to logname using llog_backup()
+ * - if failed then move bakup to logname again
+ */
+
+ OBD_ALLOC(temp_log, strlen(logname) + 1);
+ if (!temp_log)
+ RETURN(-ENOMEM);
+ sprintf(temp_log, "%sT", logname);
+
+ /* make a copy of local llog at first */
+ rc = llog_backup(env, obd, lctxt, lctxt, logname, temp_log);
+ if (rc < 0 && rc != -ENOENT)
+ GOTO(out, rc);
+ /* copy remote llog to the local copy */
+ rc = llog_backup(env, obd, rctxt, lctxt, logname, logname);
+ if (rc == -ENOENT) {
+ /* no remote llog, delete local one too */
+ llog_erase(env, lctxt, NULL, logname);
+ } else if (rc < 0) {
+ /* error during backup, get local one back from the copy */
+ llog_backup(env, obd, lctxt, lctxt, temp_log, logname);
+out:
+ CERROR("%s: failed to copy remote log %s: rc = %d\n",
+ obd->obd_name, logname, rc);
+ }
+ llog_erase(env, lctxt, NULL, temp_log);
+ OBD_FREE(temp_log, strlen(logname) + 1);
+ return rc;
+}
+
+/* local_only means it cannot get remote llogs */
+static int mgc_process_cfg_log(struct obd_device *mgc,
+ struct config_llog_data *cld, int local_only)
+{
+ struct llog_ctxt *ctxt, *lctxt = NULL;
+ struct client_obd *cli = &mgc->u.cli;
+ struct lustre_sb_info *lsi = NULL;
+ int rc = 0;
+ bool sptlrpc_started = false;
+ struct lu_env *env;
+
+ ENTRY;
+
+ LASSERT(cld);
+ LASSERT(mutex_is_locked(&cld->cld_lock));
+
+ /*
+ * local copy of sptlrpc log is controlled elsewhere, don't try to
+ * read it up here.
+ */
+ if (cld_is_sptlrpc(cld) && local_only)
+ RETURN(0);
+
+ if (cld->cld_cfg.cfg_sb)
+ lsi = s2lsi(cld->cld_cfg.cfg_sb);
+
+ OBD_ALLOC_PTR(env);
+ if (env == NULL)
+ RETURN(-ENOMEM);
+
+ rc = lu_env_init(env, LCT_MG_THREAD);
+ if (rc)
+ GOTO(out_free, rc);
+
+ ctxt = llog_get_context(mgc, LLOG_CONFIG_REPL_CTXT);
+ LASSERT(ctxt);
+
+ lctxt = llog_get_context(mgc, LLOG_CONFIG_ORIG_CTXT);
+
+ /* Copy the setup log locally if we can. Don't mess around if we're
+ * running an MGS though (logs are already local). */
+ if (lctxt && lsi && IS_SERVER(lsi) && !IS_MGS(lsi) &&
+ cli->cl_mgc_configs_dir != NULL &&
+ lu2dt_dev(cli->cl_mgc_configs_dir->do_lu.lo_dev) ==
+ lsi->lsi_dt_dev) {
+ if (!local_only)
+ /* Only try to copy log if we have the lock. */
+ rc = mgc_llog_local_copy(env, mgc, ctxt, lctxt,
+ cld->cld_logname);
+ if (local_only || rc) {
+ if (llog_is_empty(env, lctxt, cld->cld_logname)) {
+ LCONSOLE_ERROR_MSG(0x13a, "Failed to get MGS "
+ "log %s and no local copy."
+ "\n", cld->cld_logname);
+ GOTO(out_pop, rc = -ENOENT);
+ }
+ CDEBUG(D_MGC, "Failed to get MGS log %s, using local "
+ "copy for now, will try to update later.\n",
+ cld->cld_logname);
+ }
+ /* Now, whether we copied or not, start using the local llog.
+ * If we failed to copy, we'll start using whatever the old
+ * log has. */
+ llog_ctxt_put(ctxt);
+ ctxt = lctxt;
+ lctxt = NULL;
+ } else {
+ if (local_only) /* no local log at client side */
+ GOTO(out_pop, rc = -EIO);
+ }
+
+ if (cld_is_sptlrpc(cld)) {
+ sptlrpc_conf_log_update_begin(cld->cld_logname);
+ sptlrpc_started = true;
+ }
+
+ /* logname and instance info should be the same, so use our
+ * copy of the instance for the update. The cfg_last_idx will
+ * be updated here. */
+ rc = class_config_parse_llog(env, ctxt, cld->cld_logname,
+ &cld->cld_cfg);
+ EXIT;
+
+out_pop:
+ __llog_ctxt_put(env, ctxt);
+ if (lctxt)
+ __llog_ctxt_put(env, lctxt);
+
+ /*
+ * update settings on existing OBDs. doing it inside
+ * of llog_process_lock so no device is attaching/detaching
+ * in parallel.
+ * the logname must be <fsname>-sptlrpc
+ */
+ if (sptlrpc_started) {
+ LASSERT(cld_is_sptlrpc(cld));
+ sptlrpc_conf_log_update_end(cld->cld_logname);
+ class_notify_sptlrpc_conf(cld->cld_logname,
+ strlen(cld->cld_logname) -
+ strlen("-sptlrpc"));
+ }
+
+ lu_env_fini(env);
+out_free:
+ OBD_FREE_PTR(env);
+ return rc;
+}
+
+/** Get a config log from the MGS and process it.
+ * This func is called for both clients and servers.
+ * Copy the log locally before parsing it if appropriate (non-MGS server)
+ */
+int mgc_process_log(struct obd_device *mgc, struct config_llog_data *cld)
+{
+ struct lustre_handle lockh = { 0 };
+ __u64 flags = LDLM_FL_NO_LRU;
+ int rc = 0, rcl;
ENTRY;
LASSERT(cld);
- /* I don't want mutliple processes running process_log at once --
+ /* I don't want multiple processes running process_log at once --
sounds like badness. It actually might be fine, as long as
we're not trying to update from the same log
simultaneously (in which case we should use a per-log sem.) */
- down(&llog_process_lock);
-
- if (cld->cld_stopping) {
- up(&llog_process_lock);
+ mutex_lock(&cld->cld_lock);
+ if (cld->cld_stopping) {
+ mutex_unlock(&cld->cld_lock);
RETURN(0);
}
OBD_FAIL_TIMEOUT(OBD_FAIL_MGC_PAUSE_PROCESS_LOG, 20);
- if (cld->cld_cfg.cfg_sb)
- lsi = s2lsi(cld->cld_cfg.cfg_sb);
-
- CDEBUG(D_MGC, "Process log %s:%s from %d\n", cld->cld_logname,
+ CDEBUG(D_MGC, "Process log %s:%p from %d\n", cld->cld_logname,
cld->cld_cfg.cfg_instance, cld->cld_cfg.cfg_last_idx + 1);
- ctxt = llog_get_context(mgc, LLOG_CONFIG_REPL_CTXT);
- if (!ctxt) {
- CERROR("missing llog context\n");
- up(&llog_process_lock);
- RETURN(-EINVAL);
- }
-
/* Get the cfg lock on the llog */
rcl = mgc_enqueue(mgc->u.cli.cl_mgc_mgsexp, NULL, LDLM_PLAIN, NULL,
LCK_CR, &flags, NULL, NULL, NULL,
cld, 0, NULL, &lockh);
- if (rcl)
+ if (rcl == 0) {
+ /* Get the cld, it will be released in mgc_blocking_ast. */
+ config_log_get(cld);
+ rc = ldlm_lock_set_data(&lockh, (void *)cld);
+ LASSERT(rc == 0);
+ } else {
CDEBUG(D_MGC, "Can't get cfg lock: %d\n", rcl);
- lctxt = llog_get_context(mgc, LLOG_CONFIG_ORIG_CTXT);
+ /* mark cld_lostlock so that it will requeue
+ * after MGC becomes available. */
+ cld->cld_lostlock = 1;
+ /* Get extra reference, it will be put in requeue thread */
+ config_log_get(cld);
+ }
- /*
- * local copy of sptlrpc log is controlled elsewhere, don't try to
- * read it up here.
- */
- if (rcl && cld->cld_is_sptlrpc)
- goto out_pop;
-
- /* Copy the setup log locally if we can. Don't mess around if we're
- running an MGS though (logs are already local). */
- if (lctxt && lsi && (lsi->lsi_flags & LSI_SERVER) &&
- (lsi->lsi_srv_mnt == cli->cl_mgc_vfsmnt) &&
- !IS_MGS(lsi->lsi_ldd)) {
- push_ctxt(&saved, &mgc->obd_lvfs_ctxt, NULL);
- must_pop++;
+
+ if (cld_is_recover(cld)) {
+ rc = 0; /* this is not a fatal error for recover log */
if (rcl == 0)
- /* Only try to copy log if we have the lock. */
- rc = mgc_copy_llog(mgc, ctxt, lctxt, cld->cld_logname);
- if (rcl || rc) {
- if (mgc_llog_is_empty(mgc, lctxt, cld->cld_logname)) {
- LCONSOLE_ERROR_MSG(0x13a, "Failed to get MGS "
- "log %s and no local copy."
- "\n", cld->cld_logname);
- GOTO(out_pop, rc = -ENOTCONN);
- }
- CDEBUG(D_MGC, "Failed to get MGS log %s, using local "
- "copy for now, will try to update later.\n",
- cld->cld_logname);
- }
- /* Now, whether we copied or not, start using the local llog.
- If we failed to copy, we'll start using whatever the old
- log has. */
- llog_ctxt_put(ctxt);
- ctxt = lctxt;
+ rc = mgc_process_recover_log(mgc, cld);
+ } else {
+ rc = mgc_process_cfg_log(mgc, cld, rcl != 0);
}
- if (cld->cld_is_sptlrpc)
- sptlrpc_conf_log_update_begin(cld->cld_logname);
-
- /* logname and instance info should be the same, so use our
- copy of the instance for the update. The cfg_last_idx will
- be updated here. */
- rc = class_config_parse_llog(ctxt, cld->cld_logname, &cld->cld_cfg);
-out_pop:
- llog_ctxt_put(ctxt);
- if (ctxt != lctxt)
- llog_ctxt_put(lctxt);
- if (must_pop)
- pop_ctxt(&saved, &mgc->obd_lvfs_ctxt, NULL);
+ CDEBUG(D_MGC, "%s: configuration from log '%s' %sed (%d).\n",
+ mgc->obd_name, cld->cld_logname, rc ? "fail" : "succeed", rc);
- /*
- * update settings on existing OBDs. doing it inside
- * of llog_process_lock so no device is attaching/detaching
- * in parallel.
- * the logname must be <fsname>-sptlrpc
- */
- if (cld->cld_is_sptlrpc && rcl == 0) {
- sptlrpc_conf_log_update_end(cld->cld_logname);
- class_notify_sptlrpc_conf(cld->cld_logname,
- strlen(cld->cld_logname) -
- strlen("-sptlrpc"));
- }
+ mutex_unlock(&cld->cld_lock);
/* Now drop the lock so MGS can revoke it */
if (!rcl) {
CERROR("Can't drop cfg lock: %d\n", rcl);
}
- CDEBUG(D_MGC, "%s: configuration from log '%s' %sed (%d).\n",
- mgc->obd_name, cld->cld_logname, rc ? "fail" : "succeed", rc);
-
- up(&llog_process_lock);
-
RETURN(rc);
}
+
+/** Called from lustre_process_log.
+ * LCFG_LOG_START gets the config log from the MGS, processes it to start
+ * any services, and adds it to the list logs to watch (follow).
+ */
static int mgc_process_config(struct obd_device *obd, obd_count len, void *buf)
{
struct lustre_cfg *lcfg = buf;
- int cmd;
+ struct config_llog_instance *cfg = NULL;
+ char *logname;
int rc = 0;
ENTRY;
- switch(cmd = lcfg->lcfg_command) {
+ switch(lcfg->lcfg_command) {
case LCFG_LOV_ADD_OBD: {
- /* Add any new target, not just osts */
+ /* Overloading this cfg command: register a new target */
struct mgs_target_info *mti;
if (LUSTRE_CFG_BUFLEN(lcfg, 1) !=
break;
}
case LCFG_LOV_DEL_OBD:
- /* Remove target from the fs? */
- /* FIXME */
+ /* Unregister has no meaning at the moment. */
CERROR("lov_del_obd unimplemented\n");
rc = -ENOSYS;
break;
}
case LCFG_LOG_START: {
struct config_llog_data *cld;
- struct config_llog_instance *cfg;
struct super_block *sb;
- char *logname = lustre_cfg_string(lcfg, 1);
+
+ logname = lustre_cfg_string(lcfg, 1);
cfg = (struct config_llog_instance *)lustre_cfg_buf(lcfg, 2);
sb = *(struct super_block **)lustre_cfg_buf(lcfg, 3);
if (rc)
break;
cld = config_log_find(logname, cfg);
- if (IS_ERR(cld)) {
- rc = PTR_ERR(cld);
+ if (cld == NULL) {
+ rc = -ENOENT;
break;
}
cld->cld_cfg.cfg_flags |= CFG_F_COMPAT146;
rc = mgc_process_log(obd, cld);
+ if (rc == 0 && cld->cld_recover != NULL) {
+ if (OCD_HAS_FLAG(&obd->u.cli.cl_import->
+ imp_connect_data, IMP_RECOV)) {
+ rc = mgc_process_log(obd, cld->cld_recover);
+ } else {
+ struct config_llog_data *cir = cld->cld_recover;
+ cld->cld_recover = NULL;
+ config_log_put(cir);
+ }
+ if (rc)
+ CERROR("Cannot process recover llog %d\n", rc);
+ }
+
+ if (rc == 0 && cld->cld_params != NULL) {
+ rc = mgc_process_log(obd, cld->cld_params);
+ if (rc == -ENOENT) {
+ CDEBUG(D_MGC, "There is no params"
+ "config file yet\n");
+ rc = 0;
+ }
+ /* params log is optional */
+ if (rc)
+ CERROR("%s: can't process params llog: rc = %d\n",
+ obd->obd_name, rc);
+ }
config_log_put(cld);
break;
}
case LCFG_LOG_END: {
- struct config_llog_instance *cfg = NULL;
- char *logname = lustre_cfg_string(lcfg, 1);
+ logname = lustre_cfg_string(lcfg, 1);
+
if (lcfg->lcfg_bufcount >= 2)
cfg = (struct config_llog_instance *)lustre_cfg_buf(
lcfg, 2);
.o_cancel = mgc_cancel,
//.o_iocontrol = mgc_iocontrol,
.o_set_info_async = mgc_set_info_async,
+ .o_get_info = mgc_get_info,
.o_import_event = mgc_import_event,
- .o_llog_init = mgc_llog_init,
- .o_llog_finish = mgc_llog_finish,
.o_process_config = mgc_process_config,
};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff