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authorSteven Whitehouse <swhiteho@redhat.com>2008-11-27 09:42:51 +0000
committerSteven Whitehouse <swhiteho@redhat.com>2009-01-05 07:39:15 +0000
commit9a776db7371b9c77a8f4f0d2ac6374d78ac7db7d (patch)
tree5863e73d8b84c35fe4223831c2c3f30ec23f6d9f
parent3af165ac4d099385b12e3e75a9ee3ffd02da33e0 (diff)
GFS2: Send useful information with uevent messages
In order to distinguish between two differing uevent messages and to avoid using the (racy) method of reading status from sysfs in future, this adds some status information to our uevent messages. Btw, before anybody says "sysfs isn't racy", I'm aware of that, but the way that GFS2 was using it (send an ambiugous uevent and then expect the receiver to read sysfs to find out the status of the reported operation) was. The additional benefit of using the new interface is that it should be possible for a node to recover multiple journals at the same time, since there is no longer any confusion as to which journal the status belongs to. At some future stage, when all the userland programs have been converted, I intend to remove the old interface. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
-rw-r--r--fs/gfs2/locking/dlm/mount.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/gfs2/locking/dlm/mount.c b/fs/gfs2/locking/dlm/mount.c
index 0c4cbe6c8285..1aa7eb6a0226 100644
--- a/fs/gfs2/locking/dlm/mount.c
+++ b/fs/gfs2/locking/dlm/mount.c
@@ -194,17 +194,25 @@ out:
static void gdlm_recovery_done(void *lockspace, unsigned int jid,
unsigned int message)
{
+ char env_jid[20];
+ char env_status[20];
+ char *envp[] = { env_jid, env_status, NULL };
struct gdlm_ls *ls = lockspace;
ls->recover_jid_done = jid;
ls->recover_jid_status = message;
- kobject_uevent(&ls->kobj, KOBJ_CHANGE);
+ sprintf(env_jid, "JID=%d", jid);
+ sprintf(env_status, "RECOVERY=%s",
+ message == LM_RD_SUCCESS ? "Done" : "Failed");
+ kobject_uevent_env(&ls->kobj, KOBJ_CHANGE, envp);
}
static void gdlm_others_may_mount(void *lockspace)
{
+ char *message = "FIRSTMOUNT=Done";
+ char *envp[] = { message, NULL };
struct gdlm_ls *ls = lockspace;
ls->first_done = 1;
- kobject_uevent(&ls->kobj, KOBJ_CHANGE);
+ kobject_uevent_env(&ls->kobj, KOBJ_CHANGE, envp);
}
/* Userspace gets the offline uevent, blocks new gfs locks on