From 9f5d8283a9a6c2a10b64946c6cd2b99298db5456 Mon Sep 17 00:00:00 2001
From: Alasdair Kergon <agk@redhat.com>
Date: Thu, 9 Mar 2006 22:34:13 +0000
Subject: [PATCH] Propagate partial mode around cluster.

---
 WHATS_NEW                     | 1 +
 daemons/clvmd/lvm-functions.c | 6 ++++++
 lib/locking/cluster_locking.c | 3 +++
 lib/locking/locking.h         | 5 +++++
 4 files changed, 15 insertions(+)

diff --git a/WHATS_NEW b/WHATS_NEW
index 7afe5d61e..4859e3cdd 100644
--- a/WHATS_NEW
+++ b/WHATS_NEW
@@ -1,5 +1,6 @@
 Version 2.02.03 - 
 ===================================
+  Propagate partial mode around cluster.
   Fix archive file expiration.
   Fix dmeventd build.
 
diff --git a/daemons/clvmd/lvm-functions.c b/daemons/clvmd/lvm-functions.c
index f3ef305db..c8207a489 100644
--- a/daemons/clvmd/lvm-functions.c
+++ b/daemons/clvmd/lvm-functions.c
@@ -303,6 +303,9 @@ int do_lock_lv(unsigned char command, unsigned char lock_flags, char *resource)
 		}
 	}
 
+	if (lock_flags & LCK_PARTIAL_MODE)
+		init_partial(1);
+
 	switch (command) {
 	case LCK_LV_EXCLUSIVE:
 		status = do_activate_lv(resource, lock_flags, LKM_EXMODE);
@@ -331,6 +334,9 @@ int do_lock_lv(unsigned char command, unsigned char lock_flags, char *resource)
 		break;
 	}
 
+	if (lock_flags & LCK_PARTIAL_MODE)
+		init_partial(0);
+
 	/* clean the pool for another command */
 	dm_pool_empty(cmd->mem);
 
diff --git a/lib/locking/cluster_locking.c b/lib/locking/cluster_locking.c
index 43062527c..15271b937 100644
--- a/lib/locking/cluster_locking.c
+++ b/lib/locking/cluster_locking.c
@@ -330,6 +330,9 @@ static int _lock_for_cluster(unsigned char cmd, unsigned int flags, char *name)
 	args[0] = flags & 0x7F; /* Maskoff lock flags */
 	args[1] = flags & 0xC0; /* Bitmap flags */
 
+	if (partial_mode())
+		args[1] |= LCK_PARTIAL_MODE;
+
 	/*
 	 * VG locks are just that: locks, and have no side effects
 	 * so we only need to do them on the local node because all
diff --git a/lib/locking/locking.h b/lib/locking/locking.h
index dae1549f2..c01984f40 100644
--- a/lib/locking/locking.h
+++ b/lib/locking/locking.h
@@ -67,6 +67,11 @@ int check_lvm1_vg_inactive(struct cmd_context *cmd, const char *vgname);
 #define LCK_LOCAL	0x00000040	/* Don't propagate to other nodes */
 #define LCK_CLUSTER_VG	0x00000080	/* VG is clustered */
 
+/*
+ * Additional lock bits for cluster communication
+ */
+#define LCK_PARTIAL_MODE	0x00000001	/* Running in partial mode */
+
 /*
  * Common combinations
  */