From b7084ab538ac2bd71ce494cf1cbbea9fe9db2c07 Mon Sep 17 00:00:00 2001
From: Kurt Hackel <kurt.hackel@oracle.com>
Date: Mon, 1 May 2006 13:54:07 -0700
Subject: [PATCH] ocfs2: wait for recovery when starting lock mastery
Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
---
fs/ocfs2/dlm/dlmcommon.h | 1 +
fs/ocfs2/dlm/dlmmaster.c | 3 +++
fs/ocfs2/dlm/dlmrecovery.c | 30 ++++++++++++++++++++++++++++++
3 files changed, 34 insertions(+)
diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h
index 829cc3948804..9bea5c6ef9bf 100644
--- a/fs/ocfs2/dlm/dlmcommon.h
+++ b/fs/ocfs2/dlm/dlmcommon.h
@@ -710,6 +710,7 @@ void dlm_wait_for_recovery(struct dlm_ctxt *dlm);
void dlm_kick_recovery_thread(struct dlm_ctxt *dlm);
int dlm_is_node_dead(struct dlm_ctxt *dlm, u8 node);
int dlm_wait_for_node_death(struct dlm_ctxt *dlm, u8 node, int timeout);
+int dlm_wait_for_node_recovery(struct dlm_ctxt *dlm, u8 node, int timeout);
void dlm_put(struct dlm_ctxt *dlm);
struct dlm_ctxt *dlm_grab(struct dlm_ctxt *dlm);
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index 78ba77bf3a77..ed1601d1831c 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -899,6 +899,9 @@ redo_request:
} else
wait_on_recovery = 0;
spin_unlock(&dlm->spinlock);
+
+ if (wait_on_recovery)
+ dlm_wait_for_node_recovery(dlm, bit, 10000);
}
/* must wait for lock to be mastered elsewhere */
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index c699a450b0f2..b03fecab299d 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -343,6 +343,18 @@ int dlm_is_node_dead(struct dlm_ctxt *dlm, u8 node)
return dead;
}
+/* returns true if node is no longer in the domain
+ * could be dead or just not joined */
+int dlm_is_node_recovered(struct dlm_ctxt *dlm, u8 node)
+{
+ int recovered;
+ spin_lock(&dlm->spinlock);
+ recovered = !test_bit(node, dlm->recovery_map);
+ spin_unlock(&dlm->spinlock);
+ return recovered;
+}
+
+
int dlm_wait_for_node_death(struct dlm_ctxt *dlm, u8 node, int timeout)
{
if (timeout) {
@@ -361,6 +373,24 @@ int dlm_wait_for_node_death(struct dlm_ctxt *dlm, u8 node, int timeout)
return 0;
}
+int dlm_wait_for_node_recovery(struct dlm_ctxt *dlm, u8 node, int timeout)
+{
+ if (timeout) {
+ mlog(0, "%s: waiting %dms for notification of "
+ "recovery of node %u\n", dlm->name, timeout, node);
+ wait_event_timeout(dlm->dlm_reco_thread_wq,
+ dlm_is_node_recovered(dlm, node),
+ msecs_to_jiffies(timeout));
+ } else {
+ mlog(0, "%s: waiting indefinitely for notification "
+ "of recovery of node %u\n", dlm->name, node);
+ wait_event(dlm->dlm_reco_thread_wq,
+ dlm_is_node_recovered(dlm, node));
+ }
+ /* for now, return 0 */
+ return 0;
+}
+
/* callers of the top-level api calls (dlmlock/dlmunlock) should
* block on the dlm->reco.event when recovery is in progress.
* the dlm recovery thread will set this state when it begins
--
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