Propagate test mode to clvmd to skip activation and changes to held locks.

WHATS_NEW

@@ -1,5 +1,6 @@
 Version 2.02.86 -  
 =================================
+  Propagate test mode to clvmd to skip activation and changes to held locks.
   Defer writing PV labels to vg_write.
   Store label_sector only in struct physical_volume.
   Permit --available with lvcreate so non-snapshot LVs need not be activated.

daemons/clvmd/clvmd-command.c

@@ -80,6 +80,9 @@ int do_command(struct local_client *client, struct clvm_header *msg, int msglen,
 	unsigned char lock_cmd;
 	unsigned char lock_flags;
 
+	/* Reset test mode before we start */
+	init_test(0);
+
 	/* Do the command */
 	switch (msg->cmd) {
 		/* Just a test message */
@@ -109,6 +112,8 @@ int do_command(struct local_client *client, struct clvm_header *msg, int msglen,
 		lockname = &args[2];
 		/* Check to see if the VG is in use by LVM1 */
 		status = do_check_lvm1(lockname);
+		if (lock_flags & LCK_TEST_MODE)
+			init_test(1);
 		do_lock_vg(lock_cmd, lock_flags, lockname);
 		break;
 
@@ -117,6 +122,8 @@ int do_command(struct local_client *client, struct clvm_header *msg, int msglen,
 		lock_cmd = args[0] & (LCK_NONBLOCK | LCK_HOLD | LCK_SCOPE_MASK | LCK_TYPE_MASK);
 		lock_flags = args[1];
 		lockname = &args[2];
+		if (lock_flags & LCK_TEST_MODE)
+			init_test(1);
 		status = do_lock_lv(lock_cmd, lock_flags, lockname);
 		/* Replace EIO with something less scary */
 		if (status == EIO) {
@@ -251,6 +258,7 @@ int do_pre_command(struct local_client *client)
 	int status = 0;
 	char *lockname;
 
+	init_test(0);
 	switch (header->cmd) {
 	case CLVMD_CMD_TEST:
 		status = sync_lock("CLVMD_TEST", LCK_EXCL, 0, &lockid);
@@ -269,6 +277,8 @@ int do_pre_command(struct local_client *client)
 		lock_cmd = args[0];
 		lock_flags = args[1];
 		lockname = &args[2];
+		if (lock_flags & LCK_TEST_MODE)
+			init_test(1);
 		status = pre_lock_lv(lock_cmd, lock_flags, lockname);
 		break;
 
@@ -300,6 +310,7 @@ int do_post_command(struct local_client *client)
 	char *args = header->node + strlen(header->node) + 1;
 	char *lockname;
 
+	init_test(0);
 	switch (header->cmd) {
 	case CLVMD_CMD_TEST:
 		status =
@@ -311,6 +322,8 @@ int do_post_command(struct local_client *client)
 		lock_cmd = args[0];
 		lock_flags = args[1];
 		lockname = &args[2];
+		if (lock_flags & LCK_TEST_MODE)
+			init_test(1);
 		status = post_lock_lv(lock_cmd, lock_flags, lockname);
 		break;
 

daemons/clvmd/lvm-functions.c

@@ -137,6 +137,7 @@ static const char *decode_flags(unsigned char flags)
 		flags & LCK_MIRROR_NOSYNC_MODE	  ? "MIRROR_NOSYNC|" : "",
 		flags & LCK_DMEVENTD_MONITOR_MODE ? "DMEVENTD_MONITOR|" : "",
 		flags & LCK_ORIGIN_ONLY_MODE ? "ORIGIN_ONLY|" : "",
+		flags & LCK_TEST_MODE ? "TEST|" : "",
 		flags & LCK_CONVERT ? "CONVERT|" : "");
 
 	if (len > 1)
@@ -235,6 +236,9 @@ static int hold_lock(char *resource, int mode, int flags)
 	int saved_errno;
 	struct lv_info *lvi;
 
+	if (test_mode())
+		return 0;
+
 	/* Mask off invalid options */
 	flags &= LCKF_NOQUEUE | LCKF_CONVERT;
 
@@ -298,6 +302,9 @@ static int hold_unlock(char *resource)
 	int status;
 	int saved_errno;
 
+	if (test_mode())
+		return 0;
+
 	if (!(lvi = lookup_info(resource))) {
 		DEBUGLOG("hold_unlock, lock not already held\n");
 		return 0;

lib/locking/cluster_locking.c

@@ -329,6 +329,9 @@ static int _lock_for_cluster(struct cmd_context *cmd, unsigned char clvmd_cmd,
 	if (mirror_in_sync())
 		args[1] |= LCK_MIRROR_NOSYNC_MODE;
 
+	if (test_mode())
+		args[1] |= LCK_TEST_MODE;
+
 	/*
 	 * Must handle tri-state return from dmeventd_monitor_mode.
 	 * But DMEVENTD_MONITOR_IGNORE is not propagated across the cluster.

lib/locking/locking.h

@@ -106,6 +106,7 @@ int check_lvm1_vg_inactive(struct cmd_context *cmd, const char *vgname);
 #define LCK_DMEVENTD_MONITOR_MODE	0x04	/* Register with dmeventd */
 #define LCK_CONVERT			0x08	/* Convert existing lock */
 #define LCK_ORIGIN_ONLY_MODE		0x20	/* Same as above */
+#define LCK_TEST_MODE			0x10    /* Test mode: No activation */
 
 /*
  * Special cases of VG locks.