* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2013, Intel Corporation.
+ * Copyright (c) 2011, 2015, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#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 <linux/kthread.h>
-#include <obd_class.h>
-#include <lustre_dlm.h>
+#include <dt_object.h>
#include <lprocfs_status.h>
-#include <lustre_log.h>
-#include <lustre_fsfilt.h>
+#include <lustre_dlm.h>
#include <lustre_disk.h>
+#include <lustre_log.h>
+#include <lustre_nodemap.h>
+#include <lustre_swab.h>
+#include <obd_class.h>
+
#include "mgc_internal.h"
static int mgc_name2resid(char *name, int len, struct ldlm_res_id *res_id,
{
__u64 resname = 0;
- if (len > 8) {
+ if (len > sizeof(resname)) {
CERROR("name too long: %s\n", name);
return -EINVAL;
}
case CONFIG_T_SPTLRPC:
resname = 0;
break;
- case CONFIG_T_RECOVER:
- resname = type;
- break;
+ case CONFIG_T_RECOVER:
+ case CONFIG_T_PARAMS:
+ case CONFIG_T_NODEMAP:
+ resname = type;
+ break;
default:
LBUG();
}
}
EXPORT_SYMBOL(mgc_fsname2resid);
-int mgc_logname2resid(char *logname, struct ldlm_res_id *res_id, int type)
+static 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, type);
+ 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 struct list_head config_llog_list = LIST_HEAD_INIT(config_llog_list);
static DEFINE_SPINLOCK(config_list_lock);
/* Take a reference to a config log */
static int config_log_get(struct config_llog_data *cld)
{
- ENTRY;
- cfs_atomic_inc(&cld->cld_refcount);
- CDEBUG(D_INFO, "log %s refs %d\n", cld->cld_logname,
- cfs_atomic_read(&cld->cld_refcount));
- RETURN(0);
+ ENTRY;
+ atomic_inc(&cld->cld_refcount);
+ CDEBUG(D_INFO, "log %s refs %d\n", cld->cld_logname,
+ atomic_read(&cld->cld_refcount));
+ RETURN(0);
}
/* Drop a reference to a config log. When no longer referenced,
we can free the config log data */
static void config_log_put(struct config_llog_data *cld)
{
- ENTRY;
+ ENTRY;
- CDEBUG(D_INFO, "log %s refs %d\n", cld->cld_logname,
- cfs_atomic_read(&cld->cld_refcount));
- LASSERT(cfs_atomic_read(&cld->cld_refcount) > 0);
+ CDEBUG(D_INFO, "log %s refs %d\n", cld->cld_logname,
+ atomic_read(&cld->cld_refcount));
+ LASSERT(atomic_read(&cld->cld_refcount) > 0);
- /* spinlock to make sure no item with 0 refcount in the list */
- if (cfs_atomic_dec_and_lock(&cld->cld_refcount, &config_list_lock)) {
- cfs_list_del(&cld->cld_list_chain);
+ /* spinlock to make sure no item with 0 refcount in the list */
+ if (atomic_dec_and_lock(&cld->cld_refcount, &config_list_lock)) {
+ 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_is_sptlrpc(cld))
- sptlrpc_conf_log_stop(cld->cld_logname);
-
- class_export_put(cld->cld_mgcexp);
- OBD_FREE(cld, sizeof(*cld) + strlen(cld->cld_logname) + 1);
- }
+ 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_params)
+ config_log_put(cld->cld_params);
+ if (cld->cld_nodemap)
+ config_log_put(cld->cld_nodemap);
+ if (cld_is_sptlrpc(cld))
+ sptlrpc_conf_log_stop(cld->cld_logname);
+
+ class_export_put(cld->cld_mgcexp);
+ OBD_FREE(cld, sizeof(*cld) + strlen(cld->cld_logname) + 1);
+ }
- EXIT;
+ EXIT;
}
/* Find a config log by name */
instance = cfg ? cfg->cfg_instance : NULL;
spin_lock(&config_list_lock);
- cfs_list_for_each_entry(cld, &config_llog_list, cld_list_chain) {
+ 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;
- }
- }
- if (found) {
- cfs_atomic_inc(&found->cld_refcount);
- LASSERT(found->cld_stopping == 0 || cld_is_sptlrpc(found) == 0);
- }
+ /* instance may be NULL, should check name */
+ if (strcmp(logname, cld->cld_logname) == 0) {
+ found = cld;
+ break;
+ }
+ }
+ if (found) {
+ 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,
- int type,
- struct config_llog_instance *cfg,
- struct super_block *sb)
+ char *logname,
+ int type,
+ struct config_llog_instance *cfg,
+ struct super_block *sb)
{
- struct config_llog_data *cld;
- int rc;
- ENTRY;
+ struct config_llog_data *cld;
+ int rc;
- CDEBUG(D_MGC, "do adding config log %s:%p\n", logname,
- cfg ? cfg->cfg_instance : 0);
+ ENTRY;
+
+ CDEBUG(D_MGC, "do adding config log %s:%p\n", logname,
+ cfg ? cfg->cfg_instance : NULL);
- OBD_ALLOC(cld, sizeof(*cld) + strlen(logname) + 1);
- if (!cld)
- RETURN(ERR_PTR(-ENOMEM));
+ OBD_ALLOC(cld, sizeof(*cld) + strlen(logname) + 1);
+ if (!cld)
+ RETURN(ERR_PTR(-ENOMEM));
- strcpy(cld->cld_logname, logname);
- if (cfg)
- cld->cld_cfg = *cfg;
+ 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_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 (cld_is_sptlrpc(cld)) {
- sptlrpc_conf_log_start(logname);
- cld->cld_cfg.cfg_obdname = obd->obd_name;
- }
+ cld->cld_cfg.cfg_last_idx = 0;
+ cld->cld_cfg.cfg_flags = 0;
+ cld->cld_cfg.cfg_sb = sb;
+ cld->cld_type = type;
+ 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 (cld_is_sptlrpc(cld)) {
+ sptlrpc_conf_log_start(logname);
+ cld->cld_cfg.cfg_obdname = obd->obd_name;
+ }
- rc = mgc_logname2resid(logname, &cld->cld_resid, type);
+ rc = mgc_logname2resid(logname, &cld->cld_resid, type);
spin_lock(&config_list_lock);
- cfs_list_add(&cld->cld_list_chain, &config_llog_list);
+ 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 (rc) {
+ config_log_put(cld);
+ RETURN(ERR_PTR(rc));
+ }
- if (cld_is_sptlrpc(cld)) {
- rc = mgc_process_log(obd, cld);
+ if (cld_is_sptlrpc(cld) || cld_is_nodemap(cld)) {
+ rc = mgc_process_log(obd, cld);
if (rc && rc != -ENOENT)
- CERROR("failed processing sptlrpc log: %d\n", rc);
- }
+ CERROR("%s: failed processing log, type %d: rc = %d\n",
+ obd->obd_name, type, rc);
+ }
- RETURN(cld);
+ RETURN(cld);
}
static struct config_llog_data *config_recover_log_add(struct obd_device *obd,
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.
* Each instance may be at a different point in the log.
*/
static int config_log_add(struct obd_device *obd, char *logname,
- struct config_llog_instance *cfg,
- struct super_block *sb)
+ struct config_llog_instance *cfg,
+ struct super_block *sb)
{
- struct lustre_sb_info *lsi = s2lsi(sb);
- struct config_llog_data *cld;
- struct config_llog_data *sptlrpc_cld;
- char seclogname[32];
- 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;
+ struct config_llog_data *nodemap_cld;
+ char seclogname[32];
+ char *ptr;
+ int rc;
+ ENTRY;
- CDEBUG(D_MGC, "adding config log %s:%p\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
- * <fsname>-sptlrpc. multiple regular logs may share one sptlrpc log.
- */
- ptr = strrchr(logname, '-');
- if (ptr == NULL || ptr - logname > 8) {
- CERROR("logname %s is too long\n", logname);
- RETURN(-EINVAL);
- }
+ /*
+ * for each regular log, the depended sptlrpc log name is
+ * <fsname>-sptlrpc. multiple regular logs may share one sptlrpc log.
+ */
+ ptr = strrchr(logname, '-');
+ if (ptr == NULL || ptr - logname > 8) {
+ CERROR("logname %s is too long\n", logname);
+ RETURN(-EINVAL);
+ }
- memcpy(seclogname, logname, ptr - logname);
- strcpy(seclogname + (ptr - logname), "-sptlrpc");
+ memcpy(seclogname, logname, ptr - logname);
+ strcpy(seclogname + (ptr - logname), "-sptlrpc");
- sptlrpc_cld = config_log_find(seclogname, 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));
- }
- }
+ sptlrpc_cld = config_log_find(seclogname, 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);
+ GOTO(out, rc = PTR_ERR(sptlrpc_cld));
+ }
+ }
- cld = do_config_log_add(obd, logname, CONFIG_T_CONFIG, cfg, sb);
- if (IS_ERR(cld)) {
- CERROR("can't create log: %s\n", logname);
- config_log_put(sptlrpc_cld);
- RETURN(PTR_ERR(cld));
- }
+ nodemap_cld = config_log_find(LUSTRE_NODEMAP_NAME, NULL);
+ if (!nodemap_cld && IS_SERVER(lsi) && !IS_MGS(lsi)) {
+ nodemap_cld = do_config_log_add(obd, LUSTRE_NODEMAP_NAME,
+ CONFIG_T_NODEMAP, NULL, NULL);
+ if (IS_ERR(nodemap_cld)) {
+ rc = PTR_ERR(nodemap_cld);
+ CERROR("%s: cannot create nodemap log: rc = %d\n",
+ obd->obd_name, rc);
+ GOTO(out_sptlrpc, rc);
+ }
+ }
- cld->cld_sptlrpc = sptlrpc_cld;
+ 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_nodemap, rc);
+ }
- LASSERT(lsi->lsi_lmd);
- if (!(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOIR)) {
- struct config_llog_data *recover_cld;
- *strrchr(seclogname, '-') = 0;
- recover_cld = config_recover_log_add(obd, seclogname, cfg, sb);
- if (IS_ERR(recover_cld)) {
- config_log_put(cld);
- RETURN(PTR_ERR(recover_cld));
- }
- cld->cld_recover = recover_cld;
- }
+ 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_params, rc = PTR_ERR(cld));
+ }
- RETURN(0);
+ 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("%s: sptlrpc log name not correct, %s: "
+ "rc = %d\n", obd->obd_name, seclogname, -EINVAL);
+ config_log_put(cld);
+ RETURN(-EINVAL);
+ }
+ recover_cld = config_recover_log_add(obd, seclogname, cfg, sb);
+ if (IS_ERR(recover_cld))
+ GOTO(out_cld, rc = PTR_ERR(recover_cld));
+ cld->cld_recover = recover_cld;
+ }
+
+ cld->cld_sptlrpc = sptlrpc_cld;
+ cld->cld_params = params_cld;
+ cld->cld_nodemap = nodemap_cld;
+
+ RETURN(0);
+
+out_cld:
+ config_log_put(cld);
+
+out_params:
+ config_log_put(params_cld);
+
+out_nodemap:
+ config_log_put(nodemap_cld);
+
+out_sptlrpc:
+ config_log_put(sptlrpc_cld);
+
+out:
+ return rc;
}
DEFINE_MUTEX(llog_process_lock);
*/
static int config_log_end(char *logname, struct config_llog_instance *cfg)
{
- struct config_llog_data *cld;
- struct config_llog_data *cld_sptlrpc = NULL;
- struct config_llog_data *cld_recover = NULL;
- int rc = 0;
- ENTRY;
+ 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;
+ struct config_llog_data *cld_nodemap = NULL;
+ int rc = 0;
+
+ ENTRY;
- cld = config_log_find(logname, cfg);
- if (cld == NULL)
- RETURN(-ENOENT);
+ cld = config_log_find(logname, cfg);
+ if (cld == NULL)
+ RETURN(-ENOENT);
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:
- * the cld still hanging there waiting for lock cancel, and we
- * remount again but failed in the middle and call log_end without
- * calling start_log.
- */
- if (unlikely(cld->cld_stopping)) {
+ /*
+ * 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:
+ * the cld still hanging there waiting for lock cancel, and we
+ * remount again but failed in the middle and call log_end without
+ * calling start_log.
+ */
+ if (unlikely(cld->cld_stopping)) {
mutex_unlock(&cld->cld_lock);
- /* drop the ref from the find */
- config_log_put(cld);
- RETURN(rc);
- }
+ /* drop the ref from the find */
+ config_log_put(cld);
+ RETURN(rc);
+ }
- cld->cld_stopping = 1;
+ cld->cld_stopping = 1;
- cld_recover = cld->cld_recover;
- cld->cld_recover = NULL;
+ cld_recover = cld->cld_recover;
+ cld->cld_recover = NULL;
mutex_unlock(&cld->cld_lock);
if (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;
+ cld_nodemap = cld->cld_nodemap;
+ cld->cld_nodemap = NULL;
spin_unlock(&config_list_lock);
- if (cld_sptlrpc)
- config_log_put(cld_sptlrpc);
+ if (cld_sptlrpc)
+ config_log_put(cld_sptlrpc);
- /* drop the ref from the find */
- config_log_put(cld);
- /* drop the start ref */
- config_log_put(cld);
+ 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);
+ }
- CDEBUG(D_MGC, "end config log %s (%d)\n", logname ? logname : "client",
- rc);
- RETURN(rc);
+ /* don't set cld_stopping on nm lock as other targets may be active */
+ if (cld_nodemap)
+ config_log_put(cld_nodemap);
+
+ /* drop the ref from the find */
+ config_log_put(cld);
+ /* drop the start ref */
+ config_log_put(cld);
+
+ CDEBUG(D_MGC, "end config log %s (%d)\n", logname ? logname : "client",
+ rc);
+ RETURN(rc);
}
-int lprocfs_mgc_rd_ir_state(char *page, char **start, off_t off,
- int count, int *eof, void *data)
+#ifdef CONFIG_PROC_FS
+int lprocfs_mgc_rd_ir_state(struct seq_file *m, 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;
+ struct obd_device *obd = data;
+ struct obd_import *imp;
+ struct obd_connect_data *ocd;
+ struct config_llog_data *cld;
+ 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");
+ LASSERT(obd != NULL);
+ LPROCFS_CLIMP_CHECK(obd);
+ imp = obd->u.cli.cl_import;
+ ocd = &imp->imp_connect_data;
+
+ seq_printf(m, "imperative_recovery: %s\n",
+ OCD_HAS_FLAG(ocd, IMP_RECOV) ? "ENABLED" : "DISABLED");
+ seq_printf(m, "client_state:\n");
spin_lock(&config_list_lock);
- cfs_list_for_each_entry(cld, &config_llog_list, cld_list_chain) {
+ 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);
+ seq_printf(m, " - { client: %s, nidtbl_version: %u }\n",
+ cld->cld_logname,
+ cld->cld_recover->cld_cfg.cfg_last_idx);
}
spin_unlock(&config_list_lock);
- RETURN(rc);
+ LPROCFS_CLIMP_EXIT(obd);
+ RETURN(0);
}
+#endif
/* reenqueue any lost locks */
-#define RQ_RUNNING 0x1
-#define RQ_NOW 0x2
-#define RQ_LATER 0x4
-#define RQ_STOP 0x8
+#define RQ_RUNNING 0x1
+#define RQ_NOW 0x2
+#define RQ_LATER 0x4
+#define RQ_STOP 0x8
+#define RQ_PRECLEANUP 0x10
static int rq_state = 0;
-static cfs_waitq_t rq_waitq;
+static wait_queue_head_t rq_waitq;
static DECLARE_COMPLETION(rq_exit);
+static DECLARE_COMPLETION(rq_start);
static void do_requeue(struct config_llog_data *cld)
{
- 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);
- 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(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_nested(&cld->cld_mgcexp->exp_obd->u.cli.cl_sem,
+ OBD_CLI_SEM_MGC);
+ 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);
EXIT;
static int mgc_requeue_thread(void *data)
{
- int rc = 0;
- ENTRY;
+ int rc = 0;
+ bool first = true;
+ ENTRY;
- CDEBUG(D_MGC, "Starting requeue thread\n");
+ CDEBUG(D_MGC, "Starting requeue thread\n");
- /* Keep trying failed locks periodically */
+ /* Keep trying failed locks periodically */
spin_lock(&config_list_lock);
rq_state |= RQ_RUNNING;
while (1) {
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 * CFS_HZ;
- to += rand * CFS_HZ / 100; /* rand is centi-seconds */
- lwi = LWI_TIMEOUT(to, NULL, NULL);
- l_wait_event(rq_waitq, rq_state & RQ_STOP, &lwi);
+ if (first) {
+ first = false;
+ complete(&rq_start);
+ }
+
+ /* 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 = msecs_to_jiffies(MGC_TIMEOUT_MIN_SECONDS * MSEC_PER_SEC);
+ /* rand is centi-seconds */
+ to += msecs_to_jiffies(rand * MSEC_PER_SEC / 100);
+ lwi = LWI_TIMEOUT(to, NULL, NULL);
+ l_wait_event(rq_waitq, rq_state & (RQ_STOP | RQ_PRECLEANUP),
+ &lwi);
/*
* iterate & processing through the list. for each cld, process
cld_prev = NULL;
spin_lock(&config_list_lock);
- cfs_list_for_each_entry(cld, &config_llog_list,
+ rq_state &= ~RQ_PRECLEANUP;
+ list_for_each_entry(cld, &config_llog_list,
cld_list_chain) {
if (!cld->cld_lostlock)
continue;
spin_unlock(&config_list_lock);
- LASSERT(cfs_atomic_read(&cld->cld_refcount) > 0);
+ LASSERT(atomic_read(&cld->cld_refcount) > 0);
- /* 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);
- cld_prev = cld;
+ /* 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);
+ cld_prev = cld;
cld->cld_lostlock = 0;
- if (likely(!stopped))
- do_requeue(cld);
+ if (likely(!stopped))
+ do_requeue(cld);
spin_lock(&config_list_lock);
}
We are responsible for dropping the config log reference from here on out. */
static void mgc_requeue_add(struct config_llog_data *cld)
{
- ENTRY;
+ ENTRY;
- 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(cfs_atomic_read(&cld->cld_refcount) > 0);
+ CDEBUG(D_INFO, "log %s: requeue (r=%d sp=%d st=%x)\n",
+ cld->cld_logname, atomic_read(&cld->cld_refcount),
+ cld->cld_stopping, rq_state);
+ LASSERT(atomic_read(&cld->cld_refcount) > 0);
mutex_lock(&cld->cld_lock);
if (cld->cld_stopping || cld->cld_lostlock) {
} else {
rq_state |= RQ_NOW;
spin_unlock(&config_list_lock);
- cfs_waitq_signal(&rq_waitq);
+ wake_up(&rq_waitq);
}
EXIT;
}
/********************** 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;
+
+ ENTRY;
+
+ rc = llog_setup(env, obd, &obd->obd_olg, LLOG_CONFIG_ORIG_CTXT, disk,
+ &llog_osd_ops);
+ if (rc)
+ RETURN(rc);
-static int mgc_fs_setup(struct obd_device *obd, struct super_block *sb,
- struct vfsmount *mnt)
+ 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);
+}
+
+static int mgc_local_llog_fini(const struct lu_env *env,
+ struct obd_device *obd)
{
- 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 llog_ctxt *ctxt;
- LASSERT(lsi);
- LASSERT(lsi->lsi_srv_mnt == mnt);
+ ENTRY;
- /* The mgc fs exclusion sem. Only one fs can be setup at a time. */
- down(&cli->cl_mgc_sem);
+ ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
+ llog_cleanup(env, ctxt);
- cfs_cleanup_group_info();
+ RETURN(0);
+}
- obd->obd_fsops = fsfilt_get_ops(lsi->lsi_fstype);
- if (IS_ERR(obd->obd_fsops)) {
- up(&cli->cl_mgc_sem);
- CERROR("%s: No fstype %s: rc = %ld\n", lsi->lsi_fstype,
- obd->obd_name, PTR_ERR(obd->obd_fsops));
- RETURN(PTR_ERR(obd->obd_fsops));
- }
+static int mgc_fs_setup(const struct lu_env *env, struct obd_device *obd,
+ struct super_block *sb)
+{
+ struct lustre_sb_info *lsi = s2lsi(sb);
+ struct client_obd *cli = &obd->u.cli;
+ struct lu_fid rfid, fid;
+ struct dt_object *root, *dto;
+ int rc = 0;
- cli->cl_mgc_vfsmnt = mnt;
- err = fsfilt_setup(obd, mnt->mnt_sb);
- if (err)
- GOTO(err_ops, err);
-
- 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 = ll_lookup_one_len(MOUNT_CONFIGS_DIR, cfs_fs_pwd(current->fs),
- 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;
+ ENTRY;
+
+ LASSERT(lsi);
+ LASSERT(lsi->lsi_dt_dev);
+
+ /* The mgc fs exclusion mutex. Only one fs can be setup at a time. */
+ mutex_lock(&cli->cl_mgc_mutex);
+
+ /* Setup the configs dir */
+ 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)
+ RETURN(rc);
+
+ rc = dt_root_get(env, lsi->lsi_dt_dev, &rfid);
+ if (rc)
+ GOTO(out_los, 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);
+ root = dt_locate_at(env, lsi->lsi_dt_dev, &rfid,
+ &cli->cl_mgc_los->los_dev->dd_lu_dev, NULL);
+ if (unlikely(IS_ERR(root)))
+ GOTO(out_los, rc = PTR_ERR(root));
- label = fsfilt_get_label(obd, mnt->mnt_sb);
- if (label)
- CDEBUG(D_MGC, "MGC using disk labelled=%s\n", label);
+ 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 keep the cl_mgc_sem until mgc_fs_cleanup */
- RETURN(0);
+ /* 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);
-err_ops:
- fsfilt_put_ops(obd->obd_fsops);
- obd->obd_fsops = NULL;
- cli->cl_mgc_vfsmnt = NULL;
- up(&cli->cl_mgc_sem);
- RETURN(err);
+ /* 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;
+ mutex_unlock(&cli->cl_mgc_mutex);
+ }
+ return rc;
}
-static int mgc_fs_cleanup(struct obd_device *obd)
+static int mgc_fs_cleanup(const struct lu_env *env, struct obd_device *obd)
{
- struct client_obd *cli = &obd->u.cli;
- int rc = 0;
- ENTRY;
+ struct client_obd *cli = &obd->u.cli;
+ ENTRY;
- LASSERT(cli->cl_mgc_vfsmnt != NULL);
+ LASSERT(cli->cl_mgc_los != NULL);
- 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);
- }
+ mgc_local_llog_fini(env, obd);
- cli->cl_mgc_vfsmnt = NULL;
- if (obd->obd_fsops)
- fsfilt_put_ops(obd->obd_fsops);
+ lu_object_put_nocache(env, &cli->cl_mgc_configs_dir->do_lu);
+ cli->cl_mgc_configs_dir = NULL;
- up(&cli->cl_mgc_sem);
+ local_oid_storage_fini(env, cli->cl_mgc_los);
+ cli->cl_mgc_los = NULL;
- RETURN(rc);
+ class_decref(obd, "mgc_fs", obd);
+ mutex_unlock(&cli->cl_mgc_mutex);
+
+ 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)
+static int mgc_llog_init(const struct lu_env *env, struct obd_device *obd)
{
- int rc = 0;
- ENTRY;
+ struct llog_ctxt *ctxt;
+ int rc;
- switch (stage) {
- case OBD_CLEANUP_EARLY:
- break;
- case OBD_CLEANUP_EXPORTS:
- 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) {
- cfs_waitq_signal(&rq_waitq);
- wait_for_completion(&rq_exit);
- }
- }
- obd_cleanup_client_import(obd);
- rc = obd_llog_finish(obd, 0);
- if (rc != 0)
- CERROR("failed to cleanup llogging subsystems\n");
- break;
- }
- RETURN(rc);
+ ENTRY;
+
+ /* 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);
+
+ ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
+ LASSERT(ctxt);
+
+ llog_initiator_connect(ctxt);
+ llog_ctxt_put(ctxt);
+
+ RETURN(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 atomic_t mgc_count = ATOMIC_INIT(0);
+static int mgc_precleanup(struct obd_device *obd)
+{
+ int rc = 0;
+ int temp;
+ ENTRY;
+
+ if (atomic_dec_and_test(&mgc_count)) {
+ LASSERT(rq_state & RQ_RUNNING);
+ /* stop requeue thread */
+ temp = RQ_STOP;
+ } else {
+ /* wakeup requeue thread to clean our cld */
+ temp = RQ_NOW | RQ_PRECLEANUP;
+ }
+
+ spin_lock(&config_list_lock);
+ rq_state |= temp;
+ spin_unlock(&config_list_lock);
+ wake_up(&rq_waitq);
+
+ if (temp & RQ_STOP)
+ wait_for_completion(&rq_exit);
+ obd_cleanup_client_import(obd);
+
+ rc = mgc_llog_fini(NULL, obd);
+ if (rc != 0)
+ CERROR("failed to cleanup llogging subsystems\n");
+
+ RETURN(rc);
}
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;
+ struct task_struct *task;
+ int rc;
+ ENTRY;
- ptlrpcd_addref();
+ rc = ptlrpcd_addref();
+ if (rc < 0)
+ RETURN(rc);
- rc = client_obd_setup(obd, lcfg);
- if (rc)
- GOTO(err_decref, rc);
+ 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);
- }
+ 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);
+#ifdef CONFIG_PROC_FS
+ obd->obd_vars = lprocfs_mgc_obd_vars;
+ lprocfs_obd_setup(obd);
+#endif
+ sptlrpc_lprocfs_cliobd_attach(obd);
- if (cfs_atomic_inc_return(&mgc_count) == 1) {
+ if (atomic_inc_return(&mgc_count) == 1) {
rq_state = 0;
- cfs_waitq_init(&rq_waitq);
+ 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",
+ task = kthread_run(mgc_requeue_thread, NULL, "ll_cfg_requeue");
+ if (IS_ERR(task)) {
+ rc = PTR_ERR(task);
+ CERROR("%s: cannot start requeue thread: rc = %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;
- }
+ wait_for_completion(&rq_start);
+ }
- RETURN(rc);
+ 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 */
PLDLMRES(lock->l_resource),
(char *)&lock->l_resource->lr_name.name[0]);
- if (!cld) {
- CDEBUG(D_INFO, "missing data, won't requeue\n");
- break;
- }
+ if (!cld) {
+ 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",
- cld->cld_logname);
- config_log_put(cld);
- break;
- }
- /* Make sure not to re-enqueue when the mgc is stopping
- (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 %.8s: disconnecting, won't requeue\n",
- cld->cld_logname);
- config_log_put(cld);
- break;
- }
+ /* held at mgc_process_log(). */
+ LASSERT(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",
+ cld->cld_logname);
+ config_log_put(cld);
+ break;
+ }
+ /* Make sure not to re-enqueue when the mgc is stopping
+ (we get called from client_disconnect_export) */
+ if (lock->l_conn_export == NULL ||
+ lock->l_conn_export->exp_obd->u.cli.cl_conn_count == 0) {
+ CDEBUG(D_MGC, "log %.8s: disconnecting, won't requeue\n",
+ cld->cld_logname);
+ config_log_put(cld);
+ break;
+ }
/* Re-enqueue now */
mgc_requeue_add(cld);
}
/* Not sure where this should go... */
-#define MGC_ENQUEUE_LIMIT 50
+/* This is the timeout value for MGS_CONNECT request plus a ping interval, such
+ * that we can have a chance to try the secondary MGS if any. */
+#define MGC_ENQUEUE_LIMIT (INITIAL_CONNECT_TIMEOUT + (AT_OFF ? 0 : at_min) \
+ + PING_INTERVAL)
#define MGC_TARGET_REG_LIMIT 10
#define MGC_SEND_PARAM_LIMIT 10
}
/* 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,
+static int mgc_enqueue(struct obd_export *exp, enum ldlm_type type,
+ union ldlm_policy_data *policy, enum ldlm_mode mode,
__u64 *flags, void *bl_cb, void *cp_cb, void *gl_cb,
void *data, __u32 lvb_len, void *lvb_swabber,
struct lustre_handle *lockh)
RETURN(rc);
}
-static int mgc_cancel(struct obd_export *exp, struct lov_stripe_md *md,
- __u32 mode, struct lustre_handle *lockh)
+static int mgc_cancel(struct obd_export *exp, enum ldlm_mode mode,
+ struct lustre_handle *lockh)
{
- ENTRY;
+ ENTRY;
- ldlm_lock_decref(lockh, mode);
+ ldlm_lock_decref(lockh, mode);
- RETURN(0);
+ RETURN(0);
}
static void mgc_notify_active(struct obd_device *unused)
spin_lock(&config_list_lock);
rq_state |= RQ_NOW;
spin_unlock(&config_list_lock);
- cfs_waitq_signal(&rq_waitq);
+ wake_up(&rq_waitq);
/* TODO: Help the MGS rebuild nidtbl. -jay */
}
RETURN(rc);
}
-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)
+static int mgc_set_info_async(const struct lu_env *env, struct obd_export *exp,
+ u32 keylen, void *key,
+ u32 vallen, void *val,
+ struct ptlrpc_request_set *set)
{
int rc = -EINVAL;
ENTRY;
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(env, exp->exp_obd, sb);
+ RETURN(rc);
+ }
+ if (KEY_IS(KEY_CLEAR_FS)) {
+ if (vallen != 0)
+ RETURN(-EINVAL);
+ rc = mgc_fs_cleanup(env, exp->exp_obd);
+ RETURN(rc);
+ }
if (KEY_IS(KEY_SET_INFO)) {
struct mgs_send_param *msp;
}
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)
+ __u32 keylen, void *key, __u32 *vallen, void *val)
{
int rc = -EINVAL;
RETURN(rc);
}
-static int mgc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
- struct obd_device *tgt, int *index)
-{
- struct llog_ctxt *ctxt;
- int rc;
- ENTRY;
-
- LASSERT(olg == &obd->obd_olg);
-
-#ifdef HAVE_LDISKFS_OSD
- rc = llog_setup(NULL, obd, olg, LLOG_CONFIG_ORIG_CTXT, tgt,
- &llog_lvfs_ops);
- if (rc)
- RETURN(rc);
-#endif
-
- rc = llog_setup(NULL, obd, olg, LLOG_CONFIG_REPL_CTXT, tgt,
- &llog_client_ops);
- if (rc)
- GOTO(out, rc);
-
- ctxt = llog_group_get_ctxt(olg, LLOG_CONFIG_REPL_CTXT);
- if (!ctxt)
- GOTO(out, rc = -ENODEV);
-
- llog_initiator_connect(ctxt);
- llog_ctxt_put(ctxt);
-
- RETURN(0);
-out:
- ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
- if (ctxt)
- llog_cleanup(NULL, ctxt);
- RETURN(rc);
-}
-
-static int mgc_llog_finish(struct obd_device *obd, int count)
-{
- struct llog_ctxt *ctxt;
-
- ENTRY;
-
- ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
- if (ctxt)
- llog_cleanup(NULL, ctxt);
-
- ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
- if (ctxt)
- llog_cleanup(NULL, ctxt);
- RETURN(0);
-}
-
enum {
CONFIG_READ_NRPAGES_INIT = 1 << (20 - PAGE_CACHE_SHIFT),
CONFIG_READ_NRPAGES = 4
while (datalen > 0) {
int entry_len = sizeof(*entry);
- int is_ost;
+ int is_ost, i;
struct obd_device *obd;
char *obdname;
char *cname;
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);
+ /* iterate all nids to find one */
+ /* find uuid by nid */
+ rc = -ENOENT;
+ for (i = 0; i < entry->mne_nid_count; i++) {
+ rc = client_import_find_conn(obd->u.cli.cl_import,
+ entry->u.nids[i],
+ (struct obd_uuid *)uuid);
+ if (rc == 0)
+ break;
+ }
+
up_read(&obd->u.cli.cl_sem);
if (rc < 0) {
CERROR("mgc: cannot find uuid by nid %s\n",
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;
- }
+ lcfg = lustre_cfg_new(LCFG_PARAM, &bufs);
+ if (lcfg == NULL) {
+ rc = -ENOMEM;
+ break;
+ }
CDEBUG(D_INFO, "ir apply logs "LPD64"/"LPD64" for %s -> %s\n",
prev_version, max_version, obdname, params);
/**
* 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.
+ * by the MGS. A CONFIG_READ RPC is going to send to fetch recovery or
+ * nodemap logs.
*/
-static int mgc_process_recover_log(struct obd_device *obd,
- struct config_llog_data *cld)
+static int mgc_process_recover_nodemap_log(struct obd_device *obd,
+ struct config_llog_data *cld)
{
- 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;
+ struct ptlrpc_connection *mgc_conn;
+ struct ptlrpc_request *req = NULL;
+ struct config_llog_instance *cfg = &cld->cld_cfg;
+ struct mgs_config_body *body;
+ struct mgs_config_res *res;
+ struct nodemap_config *new_config = NULL;
+ struct lu_nodemap *recent_nodemap = NULL;
+ struct ptlrpc_bulk_desc *desc;
+ struct page **pages = NULL;
+ __u64 config_read_offset = 0;
+ int nrpages = 0;
+ bool eof = true;
bool mne_swab = false;
- int i;
- int ealen;
- int rc;
- ENTRY;
+ int i;
+ int ealen;
+ int rc;
+ ENTRY;
+
+ mgc_conn = class_exp2cliimp(cld->cld_mgcexp)->imp_connection;
+
+ /* don't need to get local config */
+ if (cld_is_nodemap(cld) &&
+ (LNET_NETTYP(LNET_NIDNET(mgc_conn->c_peer.nid)) == LOLND))
+ GOTO(out, rc = 0);
/* allocate buffer for bulk transfer.
* if this is the first time for this mgs to read logs,
* small and CONFIG_READ_NRPAGES will be used.
*/
nrpages = CONFIG_READ_NRPAGES;
- if (cfg->cfg_last_idx == 0) /* the first time */
+ if (cfg->cfg_last_idx == 0 || cld_is_nodemap(cld))
nrpages = CONFIG_READ_NRPAGES_INIT;
OBD_ALLOC(pages, sizeof(*pages) * nrpages);
GOTO(out, rc = -ENOMEM);
for (i = 0; i < nrpages; i++) {
- pages[i] = alloc_page(GFP_IOFS);
+ pages[i] = alloc_page(GFP_KERNEL);
if (pages[i] == NULL)
GOTO(out, rc = -ENOMEM);
}
again:
- LASSERT(cld_is_recover(cld));
+#ifdef HAVE_SERVER_SUPPORT
+ if (cld_is_nodemap(cld) && config_read_offset == 0) {
+ new_config = nodemap_config_alloc();
+ if (IS_ERR(new_config)) {
+ rc = PTR_ERR(new_config);
+ new_config = NULL;
+ GOTO(out, rc);
+ }
+ }
+#endif
+ LASSERT(cld_is_recover(cld) || cld_is_nodemap(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);
+ req = ptlrpc_request_alloc(class_exp2cliimp(cld->cld_mgcexp),
+ &RQF_MGS_CONFIG_READ);
+ if (req == NULL)
+ GOTO(out, rc = -ENOMEM);
- rc = ptlrpc_request_pack(req, LUSTRE_MGS_VERSION, MGS_CONFIG_READ);
- if (rc)
- GOTO(out, rc);
+ rc = ptlrpc_request_pack(req, LUSTRE_MGS_VERSION, MGS_CONFIG_READ);
+ if (rc)
+ GOTO(out, rc);
- /* 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));
+ /* 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;
+ if (cld_is_nodemap(cld))
+ body->mcb_offset = config_read_offset;
+ else
+ body->mcb_offset = cfg->cfg_last_idx + 1;
+ body->mcb_type = cld->cld_type;
body->mcb_bits = PAGE_CACHE_SHIFT;
- body->mcb_units = nrpages;
+ body->mcb_units = nrpages;
/* allocate bulk transfer descriptor */
- desc = ptlrpc_prep_bulk_imp(req, nrpages, 1, BULK_PUT_SINK,
- MGS_BULK_PORTAL);
+ desc = ptlrpc_prep_bulk_imp(req, nrpages, 1,
+ PTLRPC_BULK_PUT_SINK | PTLRPC_BULK_BUF_KIOV,
+ MGS_BULK_PORTAL,
+ &ptlrpc_bulk_kiov_pin_ops);
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);
+ desc->bd_frag_ops->add_kiov_frag(desc, pages[i], 0,
+ PAGE_CACHE_SIZE);
- ptlrpc_request_set_replen(req);
- rc = ptlrpc_queue_wait(req);
- if (rc)
- GOTO(out, rc);
+ ptlrpc_request_set_replen(req);
+ rc = ptlrpc_queue_wait(req);
+ if (rc)
+ GOTO(out, rc);
- res = req_capsule_server_get(&req->rq_pill, &RMF_MGS_CONFIG_RES);
- if (res->mcr_size < res->mcr_offset)
- GOTO(out, rc = -EINVAL);
+ res = req_capsule_server_get(&req->rq_pill, &RMF_MGS_CONFIG_RES);
+ if (!res)
+ GOTO(out, rc = -EPROTO);
- /* 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;
+ if (cld_is_nodemap(cld)) {
+ config_read_offset = res->mcr_offset;
+ eof = config_read_offset == II_END_OFF;
+ } else {
+ if (res->mcr_size < res->mcr_offset)
+ GOTO(out, rc = -EINVAL);
- CDEBUG(D_INFO, "Latest version "LPD64", more %d.\n",
- res->mcr_offset, eof == false);
+ /* 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;
- ealen = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, 0);
- if (ealen < 0)
- GOTO(out, rc = ealen);
+ 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);
+ GOTO(out, rc = -EINVAL);
- if (ealen == 0) { /* no logs transferred */
- if (!eof)
- rc = -EINVAL;
- GOTO(out, rc);
- }
+ if (ealen == 0) { /* no logs transferred */
+#ifdef HAVE_SERVER_SUPPORT
+ /* config changed since first read RPC */
+ if (cld_is_nodemap(cld) && config_read_offset == 0) {
+ recent_nodemap = NULL;
+ nodemap_config_dealloc(new_config);
+ new_config = NULL;
+
+ CDEBUG(D_INFO, "nodemap config changed in transit, retrying\n");
+
+ /* setting eof to false, we request config again */
+ eof = false;
+ GOTO(out, rc = 0);
+ }
+#endif
+ if (!eof)
+ rc = -EINVAL;
+ GOTO(out, rc);
+ }
mne_swab = !!ptlrpc_rep_need_swab(req);
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 2, 50, 0)
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 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
- for (i = 0; i < nrpages && ealen > 0; i++) {
- int rc2;
- void *ptr;
+ /* When a nodemap config is received, we build a new nodemap config,
+ * with new nodemap structs. We keep track of the most recently added
+ * nodemap since the config is read ordered by nodemap_id, and so it
+ * is likely that the next record will be related. Because access to
+ * the nodemaps is single threaded until the nodemap_config is active,
+ * we don't need to reference count with recent_nodemap, though
+ * recent_nodemap should be set to NULL when the nodemap_config
+ * is either destroyed or set active.
+ */
+ for (i = 0; i < nrpages && ealen > 0; i++) {
+ int rc2;
+ union lu_page *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);
+ if (cld_is_nodemap(cld))
+ rc2 = nodemap_process_idx_pages(new_config, ptr,
+ &recent_nodemap);
+ else
+ 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);
+ CWARN("%s: error processing %s log %s: rc = %d\n",
+ obd->obd_name,
+ cld_is_nodemap(cld) ? "nodemap" : "recovery",
+ cld->cld_logname,
+ rc2);
break;
- }
+ }
ealen -= PAGE_CACHE_SIZE;
- }
+ }
out:
- if (req)
- ptlrpc_req_finished(req);
+ if (req) {
+ ptlrpc_req_finished(req);
+ req = NULL;
+ }
- if (rc == 0 && !eof)
- goto again;
+ if (rc == 0 && !eof)
+ goto again;
+
+#ifdef HAVE_SERVER_SUPPORT
+ if (new_config != NULL) {
+ /* recent_nodemap cannot be used after set_active/dealloc */
+ if (rc == 0)
+ nodemap_config_set_active_mgc(new_config);
+ else
+ nodemap_config_dealloc(new_config);
+ }
+#endif
if (pages) {
for (i = 0; i < nrpages; i++) {
return rc;
}
-#ifdef HAVE_LDISKFS_OSD
-
-/*
- * XXX: mgc_copy_llog() does not support osd-based llogs yet
- */
-
-/* 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;
-
- push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
- rc = llog_open(NULL, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
- if (rc == 0) {
- rc = llog_init_handle(NULL, llh, LLOG_F_IS_PLAIN, NULL);
- if (rc == 0)
- rc = llog_get_size(llh);
- llog_close(NULL, llh);
- } else if (rc == -ENOENT) {
- rc = 0;
- }
- pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
- /* header is record 1 */
- return (rc <= 1);
-}
-
/* Copy a remote log locally */
-static int mgc_copy_llog(struct obd_device *obd, struct llog_ctxt *rctxt,
- struct llog_ctxt *lctxt, char *logname)
+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_handle *local_llh, *remote_llh;
- struct obd_uuid *uuid;
- char *temp_log;
- int rc, rc2;
- ENTRY;
+ char *temp_log;
+ int rc;
- /* Write new log to a temp name, then vfs_rename over logname
- upon successful completion. */
+ ENTRY;
- OBD_ALLOC(temp_log, strlen(logname) + 1);
- if (!temp_log)
- RETURN(-ENOMEM);
- sprintf(temp_log, "%sT", logname);
+ /*
+ * - copy it to backup using llog_backup()
+ * - copy remote llog to logname using llog_backup()
+ * - if failed then move bakup to logname again
+ */
- /* Make sure there's no old temp log */
- rc = llog_erase(NULL, lctxt, NULL, temp_log);
- if (rc < 0 && rc != -ENOENT)
- GOTO(out, rc);
+ OBD_ALLOC(temp_log, strlen(logname) + 2);
+ if (!temp_log)
+ RETURN(-ENOMEM);
+ sprintf(temp_log, "%sT", logname);
- /* open local log */
- rc = llog_open_create(NULL, lctxt, &local_llh, NULL, temp_log);
- if (rc)
+ /* 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);
-
- /* set the log header uuid for fun */
- OBD_ALLOC_PTR(uuid);
- obd_str2uuid(uuid, logname);
- rc = llog_init_handle(NULL, local_llh, LLOG_F_IS_PLAIN, uuid);
- OBD_FREE_PTR(uuid);
- if (rc)
- GOTO(out_closel, rc);
-
- /* open remote log */
- rc = llog_open(NULL, rctxt, &remote_llh, NULL, logname,
- LLOG_OPEN_EXISTS);
- if (rc < 0) {
- if (rc == -ENOENT)
- rc = 0;
- GOTO(out_closel, rc);
- }
-
- rc = llog_init_handle(NULL, remote_llh, LLOG_F_IS_PLAIN, NULL);
- if (rc)
- GOTO(out_closer, rc);
-
- /* Copy remote log */
- rc = llog_process(NULL, remote_llh, llog_copy_handler,
- (void *)local_llh, NULL);
-
-out_closer:
- rc2 = llog_close(NULL, remote_llh);
- if (!rc)
- rc = rc2;
-out_closel:
- rc2 = llog_close(NULL, 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 == 0) {
- 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);
- }
- CDEBUG(D_MGC, "Copied remote log %s (%d)\n", logname, 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:
- if (rc)
- CERROR("Failed to copy remote log %s (%d)\n", logname, rc);
- OBD_FREE(temp_log, strlen(logname) + 1);
- RETURN(rc);
+ 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) + 2);
+ return rc;
}
-#endif
/* 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 config_llog_data *cld, int local_only)
{
- struct llog_ctxt *ctxt, *lctxt = NULL;
-#ifdef HAVE_LDISKFS_OSD
- struct client_obd *cli = &mgc->u.cli;
-#endif
- struct lvfs_run_ctxt *saved_ctxt;
- struct lustre_sb_info *lsi = NULL;
- int rc = 0, must_pop = 0;
- bool sptlrpc_started = false;
+ 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;
+ ENTRY;
- LASSERT(cld);
+ 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);
+ /*
+ * 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);
+ if (cld->cld_cfg.cfg_sb)
+ lsi = s2lsi(cld->cld_cfg.cfg_sb);
- ctxt = llog_get_context(mgc, LLOG_CONFIG_REPL_CTXT);
- if (!ctxt) {
- CERROR("missing llog context\n");
- RETURN(-EINVAL);
- }
+ OBD_ALLOC_PTR(env);
+ if (env == NULL)
+ RETURN(-ENOMEM);
- OBD_ALLOC_PTR(saved_ctxt);
- if (saved_ctxt == 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 (strcmp(cld->cld_logname, PARAMS_FILENAME) != 0 &&
+ 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);
+ rc = 0;
+ }
+ /* 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);
+ }
- lctxt = llog_get_context(mgc, LLOG_CONFIG_ORIG_CTXT);
+ 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);
-#ifdef HAVE_LDISKFS_OSD
/*
- * XXX: at the moment mgc_copy_llog() works with lvfs-based llogs
+ * 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
*/
- /* 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) &&
- (lsi->lsi_srv_mnt == cli->cl_mgc_vfsmnt) &&
- !IS_MGS(lsi) && lsi->lsi_srv_mnt) {
- push_ctxt(saved_ctxt, &mgc->obd_lvfs_ctxt, NULL);
- must_pop++;
- if (!local_only)
- /* Only try to copy log if we have the lock. */
- rc = mgc_copy_llog(mgc, ctxt, lctxt, cld->cld_logname);
- if (local_only || 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;
- lctxt = NULL;
- } else
-#endif
- if (local_only) { /* no local log at client side */
- GOTO(out_pop, rc = -EIO);
- }
+ 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"));
+ }
- if (cld_is_sptlrpc(cld)) {
- sptlrpc_conf_log_update_begin(cld->cld_logname);
- sptlrpc_started = true;
- }
+ lu_env_fini(env);
+out_free:
+ OBD_FREE_PTR(env);
+ return rc;
+}
- /* 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(NULL, ctxt, cld->cld_logname,
- &cld->cld_cfg);
- EXIT;
+static bool mgc_import_in_recovery(struct obd_import *imp)
+{
+ bool in_recovery = true;
-out_pop:
- llog_ctxt_put(ctxt);
- if (lctxt)
- llog_ctxt_put(lctxt);
- if (must_pop)
- pop_ctxt(saved_ctxt, &mgc->obd_lvfs_ctxt, NULL);
-
- OBD_FREE_PTR(saved_ctxt);
- /*
- * 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"));
- }
+ spin_lock(&imp->imp_lock);
+ if (imp->imp_state == LUSTRE_IMP_FULL ||
+ imp->imp_state == LUSTRE_IMP_CLOSED)
+ in_recovery = false;
+ spin_unlock(&imp->imp_lock);
- RETURN(rc);
+ return in_recovery;
}
-/** 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)
+/**
+ * Get a configuration log from the MGS and process it.
+ *
+ * This function is called for both clients and servers to process the
+ * configuration log from the MGS. The MGC enqueues a DLM lock on the
+ * log from the MGS, and if the lock gets revoked the MGC will be notified
+ * by the lock cancellation callback that the config log has changed,
+ * and will enqueue another MGS lock on it, and then continue processing
+ * the new additions to the end of the log.
+ *
+ * Since the MGC import is not replayable, if the import is being evicted
+ * (rcl == -ESHUTDOWN, \see ptlrpc_import_delay_req()), retry to process
+ * the log until recovery is finished or the import is closed.
+ *
+ * Make a local copy of the log before parsing it if appropriate (non-MGS
+ * server) so that the server can start even when the MGS is down.
+ *
+ * There shouldn't be multiple processes running process_log at once --
+ * sounds like badness. It actually might be fine, as long as they're not
+ * trying to update from the same log simultaneously, in which case we
+ * should use a per-log semaphore instead of cld_lock.
+ *
+ * \param[in] mgc MGC device by which to fetch the configuration log
+ * \param[in] cld log processing state (stored in lock callback data)
+ *
+ * \retval 0 on success
+ * \retval negative errno on failure
*/
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;
+ bool retry = false;
ENTRY;
- LASSERT(cld);
+ LASSERT(cld != NULL);
/* 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.) */
+restart:
mutex_lock(&cld->cld_lock);
if (cld->cld_stopping) {
mutex_unlock(&cld->cld_lock);
OBD_FAIL_TIMEOUT(OBD_FAIL_MGC_PAUSE_PROCESS_LOG, 20);
- 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);
-
- /* 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 == 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);
+ 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);
+
+ /* Get the cfg lock on the llog */
+ rcl = mgc_enqueue(mgc->u.cli.cl_mgc_mgsexp, LDLM_PLAIN, NULL,
+ LCK_CR, &flags, NULL, NULL, NULL,
+ cld, 0, NULL, &lockh);
+ 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);
+
+ if (rcl == -ESHUTDOWN &&
+ atomic_read(&mgc->u.cli.cl_mgc_refcount) > 0 && !retry) {
+ struct obd_import *imp;
+ struct l_wait_info lwi;
+ int secs = cfs_time_seconds(obd_timeout);
+
+ mutex_unlock(&cld->cld_lock);
+ imp = class_exp2cliimp(mgc->u.cli.cl_mgc_mgsexp);
+
+ /* Let's force the pinger, and wait the import to be
+ * connected, note: since mgc import is non-replayable,
+ * and even the import state is disconnected, it does
+ * not mean the "recovery" is stopped, so we will keep
+ * waitting until timeout or the import state is
+ * FULL or closed */
+ ptlrpc_pinger_force(imp);
+
+ lwi = LWI_TIMEOUT(secs, NULL, NULL);
+ l_wait_event(imp->imp_recovery_waitq,
+ !mgc_import_in_recovery(imp), &lwi);
+
+ if (imp->imp_state == LUSTRE_IMP_FULL) {
+ retry = true;
+ goto restart;
+ } else {
+ mutex_lock(&cld->cld_lock);
+ cld->cld_lostlock = 1;
+ }
+ } else {
+ /* 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);
+ }
- /* 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);
- }
+ if (cld_is_recover(cld) || cld_is_nodemap(cld)) {
+ if (!rcl)
+ rc = mgc_process_recover_nodemap_log(mgc, cld);
+ else if (cld_is_nodemap(cld))
+ rc = rcl;
- if (cld_is_recover(cld)) {
- rc = 0; /* this is not a fatal error for recover log */
- if (rcl == 0)
- rc = mgc_process_recover_log(mgc, cld);
- } else {
- rc = mgc_process_cfg_log(mgc, cld, rcl != 0);
- }
+ if (cld_is_recover(cld) && rc) {
+ if (!rcl) {
+ CERROR("%s: recover log %s failed, not fatal: rc = %d\n",
+ mgc->obd_name, cld->cld_logname, rc);
+ cld->cld_lostlock = 1;
+ }
+ rc = 0; /* this is not a fatal error for recover log */
+ }
+ } else {
+ rc = mgc_process_cfg_log(mgc, cld, rcl != 0);
+ }
- CDEBUG(D_MGC, "%s: configuration from log '%s' %sed (%d).\n",
- mgc->obd_name, cld->cld_logname, rc ? "fail" : "succeed", rc);
+ CDEBUG(D_MGC, "%s: configuration from log '%s' %sed (%d).\n",
+ mgc->obd_name, cld->cld_logname, rc ? "fail" : "succeed", rc);
mutex_unlock(&cld->cld_lock);
- /* Now drop the lock so MGS can revoke it */
- if (!rcl) {
- rcl = mgc_cancel(mgc->u.cli.cl_mgc_mgsexp, NULL,
- LCK_CR, &lockh);
- if (rcl)
- CERROR("Can't drop cfg lock: %d\n", rcl);
- }
+ /* Now drop the lock so MGS can revoke it */
+ if (!rcl) {
+ rcl = mgc_cancel(mgc->u.cli.cl_mgc_mgsexp, LCK_CR, &lockh);
+ if (rcl)
+ CERROR("Can't drop cfg lock: %d\n", rcl);
+ }
- RETURN(rc);
+ RETURN(rc);
}
* 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)
+static int mgc_process_config(struct obd_device *obd, size_t len, void *buf)
{
struct lustre_cfg *lcfg = buf;
struct config_llog_instance *cfg = NULL;
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;
RETURN(rc);
}
-struct obd_ops mgc_obd_ops = {
+static struct obd_ops mgc_obd_ops = {
.o_owner = THIS_MODULE,
.o_setup = mgc_setup,
.o_precleanup = mgc_precleanup,
.o_del_conn = client_import_del_conn,
.o_connect = client_connect_import,
.o_disconnect = client_disconnect_export,
- //.o_enqueue = mgc_enqueue,
- .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,
};
-int __init mgc_init(void)
+static int __init mgc_init(void)
{
- return class_register_type(&mgc_obd_ops, NULL, NULL,
- LUSTRE_MGC_NAME, NULL);
+ return class_register_type(&mgc_obd_ops, NULL, true, NULL,
+ LUSTRE_MGC_NAME, NULL);
}
-#ifdef __KERNEL__
-static void /*__exit*/ mgc_exit(void)
+static void __exit mgc_exit(void)
{
class_unregister_type(LUSTRE_MGC_NAME);
}
-MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
+MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("Lustre Management Client");
+MODULE_VERSION(LUSTRE_VERSION_STRING);
MODULE_LICENSE("GPL");
module_init(mgc_init);
module_exit(mgc_exit);
-#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff