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Diffstat (limited to 'fs/dlm/lockspace.c')
-rw-r--r--fs/dlm/lockspace.c86
1 files changed, 70 insertions, 16 deletions
diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index a677b2a5eed4..1dc72105ab12 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -197,13 +197,24 @@ static int do_uevent(struct dlm_ls *ls, int in)
else
kobject_uevent(&ls->ls_kobj, KOBJ_OFFLINE);
+ log_debug(ls, "%s the lockspace group...", in ? "joining" : "leaving");
+
+ /* dlm_controld will see the uevent, do the necessary group management
+ and then write to sysfs to wake us */
+
error = wait_event_interruptible(ls->ls_uevent_wait,
test_and_clear_bit(LSFL_UEVENT_WAIT, &ls->ls_flags));
+
+ log_debug(ls, "group event done %d %d", error, ls->ls_uevent_result);
+
if (error)
goto out;
error = ls->ls_uevent_result;
out:
+ if (error)
+ log_error(ls, "group %s failed %d %d", in ? "join" : "leave",
+ error, ls->ls_uevent_result);
return error;
}
@@ -234,8 +245,13 @@ static int dlm_scand(void *data)
struct dlm_ls *ls;
while (!kthread_should_stop()) {
- list_for_each_entry(ls, &lslist, ls_list)
- dlm_scan_rsbs(ls);
+ list_for_each_entry(ls, &lslist, ls_list) {
+ if (dlm_lock_recovery_try(ls)) {
+ dlm_scan_rsbs(ls);
+ dlm_scan_timeout(ls);
+ dlm_unlock_recovery(ls);
+ }
+ }
schedule_timeout_interruptible(dlm_config.ci_scan_secs * HZ);
}
return 0;
@@ -395,6 +411,7 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
{
struct dlm_ls *ls;
int i, size, error = -ENOMEM;
+ int do_unreg = 0;
if (namelen > DLM_LOCKSPACE_LEN)
return -EINVAL;
@@ -417,11 +434,22 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
goto out;
memcpy(ls->ls_name, name, namelen);
ls->ls_namelen = namelen;
- ls->ls_exflags = flags;
ls->ls_lvblen = lvblen;
ls->ls_count = 0;
ls->ls_flags = 0;
+ if (flags & DLM_LSFL_TIMEWARN)
+ set_bit(LSFL_TIMEWARN, &ls->ls_flags);
+
+ if (flags & DLM_LSFL_FS)
+ ls->ls_allocation = GFP_NOFS;
+ else
+ ls->ls_allocation = GFP_KERNEL;
+
+ /* ls_exflags are forced to match among nodes, and we don't
+ need to require all nodes to have TIMEWARN or FS set */
+ ls->ls_exflags = (flags & ~(DLM_LSFL_TIMEWARN | DLM_LSFL_FS));
+
size = dlm_config.ci_rsbtbl_size;
ls->ls_rsbtbl_size = size;
@@ -461,6 +489,8 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
mutex_init(&ls->ls_waiters_mutex);
INIT_LIST_HEAD(&ls->ls_orphans);
mutex_init(&ls->ls_orphans_mutex);
+ INIT_LIST_HEAD(&ls->ls_timeout);
+ mutex_init(&ls->ls_timeout_mutex);
INIT_LIST_HEAD(&ls->ls_nodes);
INIT_LIST_HEAD(&ls->ls_nodes_gone);
@@ -477,6 +507,8 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
init_waitqueue_head(&ls->ls_uevent_wait);
ls->ls_uevent_result = 0;
+ init_completion(&ls->ls_members_done);
+ ls->ls_members_result = -1;
ls->ls_recoverd_task = NULL;
mutex_init(&ls->ls_recoverd_active);
@@ -513,32 +545,49 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
error = dlm_recoverd_start(ls);
if (error) {
log_error(ls, "can't start dlm_recoverd %d", error);
- goto out_rcomfree;
+ goto out_delist;
}
- dlm_create_debug_file(ls);
-
error = kobject_setup(ls);
if (error)
- goto out_del;
+ goto out_stop;
error = kobject_register(&ls->ls_kobj);
if (error)
- goto out_del;
+ goto out_stop;
+
+ /* let kobject handle freeing of ls if there's an error */
+ do_unreg = 1;
+
+ /* This uevent triggers dlm_controld in userspace to add us to the
+ group of nodes that are members of this lockspace (managed by the
+ cluster infrastructure.) Once it's done that, it tells us who the
+ current lockspace members are (via configfs) and then tells the
+ lockspace to start running (via sysfs) in dlm_ls_start(). */
error = do_uevent(ls, 1);
if (error)
- goto out_unreg;
+ goto out_stop;
+
+ wait_for_completion(&ls->ls_members_done);
+ error = ls->ls_members_result;
+ if (error)
+ goto out_members;
+
+ dlm_create_debug_file(ls);
+
+ log_debug(ls, "join complete");
*lockspace = ls;
return 0;
- out_unreg:
- kobject_unregister(&ls->ls_kobj);
- out_del:
- dlm_delete_debug_file(ls);
+ out_members:
+ do_uevent(ls, 0);
+ dlm_clear_members(ls);
+ kfree(ls->ls_node_array);
+ out_stop:
dlm_recoverd_stop(ls);
- out_rcomfree:
+ out_delist:
spin_lock(&lslist_lock);
list_del(&ls->ls_list);
spin_unlock(&lslist_lock);
@@ -550,7 +599,10 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
out_rsbfree:
kfree(ls->ls_rsbtbl);
out_lsfree:
- kfree(ls);
+ if (do_unreg)
+ kobject_unregister(&ls->ls_kobj);
+ else
+ kfree(ls);
out:
module_put(THIS_MODULE);
return error;
@@ -570,6 +622,8 @@ int dlm_new_lockspace(char *name, int namelen, void **lockspace,
error = new_lockspace(name, namelen, lockspace, flags, lvblen);
if (!error)
ls_count++;
+ else if (!ls_count)
+ threads_stop();
out:
mutex_unlock(&ls_lock);
return error;
@@ -696,7 +750,7 @@ static int release_lockspace(struct dlm_ls *ls, int force)
dlm_clear_members_gone(ls);
kfree(ls->ls_node_array);
kobject_unregister(&ls->ls_kobj);
- /* The ls structure will be freed when the kobject is done with */
+ /* The ls structure will be freed when the kobject is done with */
mutex_lock(&ls_lock);
ls_count--;