lvm.static no longer interacts with dmeventd unless explicitly asked to.

WHATS_NEW

@@ -1,5 +1,6 @@
 Version 2.02.20 -
 ===================================
+  lvm.static no longer interacts with dmeventd unless explicitly asked to.
   Add field definitions to report help text.
   Remove unnecessary cmd arg from target_*monitor_events().
   Add private variable to dmeventd shared library interface.

lib/activate/activate.c

@@ -653,6 +653,10 @@ int monitor_dev_for_events(struct cmd_context *cmd,
 	struct lv_segment *seg;
 	int (*monitor_fn) (struct lv_segment *s, int e);
 
+	/* skip dmeventd code altogether */
+	if (dmeventd_monitor_mode() == DMEVENTD_MONITOR_IGNORE)
+		return 1;
+
 	/*
 	 * Nothing to do if dmeventd configured not to be used.
 	 */

lib/log/log.h

@@ -90,6 +90,8 @@ int ignorelockingfailure(void);
 int lockingfailed(void);
 int security_level(void);
 int mirror_in_sync(void);
+
+#define DMEVENTD_MONITOR_IGNORE -1
 int dmeventd_monitor_mode(void);
 
 /* Suppress messages to stdout/stderr (1) or everywhere (2) */

scripts/lvm2_monitoring_init_rhel4

@@ -0,0 +1,98 @@
+#!/bin/bash
+#
+# Copyright (C) 2007 Red Hat, Inc. All rights reserved.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+# This file is part of LVM2.
+# It is required for the proper handling of failures of LVM2 mirror
+# devices that were created using the -m option of lvcreate.
+#
+#
+# chkconfig: 12345 02 99
+# description: Starts and stops dmeventd monitoring for lvm2
+#	       
+### BEGIN INIT INFO
+# Provides: 
+### END INIT INFO
+
+. /etc/init.d/functions
+
+VGCHANGE="/usr/sbin/vgchange"
+
+start()
+{
+    for ret in 0
+    do
+	# TODO do we want to separate out already active groups only?
+	VGS=`vgs --noheadings -o name`
+	for vg in $VGS
+	do
+	    if ! action "Starting monitoring for VG $vg:" $VGCHANGE --monitor y $vg
+	    then
+		ret=$?
+	    fi
+	done
+
+    done
+
+    return $ret
+}
+
+
+stop()
+{
+    for ret in 0
+    do
+	# TODO do we want to separate out already active groups only?
+	VGS=`vgs --noheadings -o name`
+	for vg in $VGS
+	do
+	    if ! action "Starting monitoring for VG $vg:" $VGCHANGE --monitor n $vg
+	    then
+		ret=$?
+	    fi
+	done
+
+    done
+
+}
+
+ret=1
+
+# See how we were called.
+case "$1" in
+  start)
+	start
+	ret=$?
+	;;
+
+  stop)
+	stop
+	ret=$?
+	;;
+
+  restart)
+	if stop
+	then
+		start
+	fi 
+	ret=$?
+	;;
+
+  status)
+	# TODO anyone with an idea how to dump monitored volumes?
+	;;
+
+  *)
+	echo $"Usage: $0 {start|stop|restart|status}"
+	;;
+esac
+
+exit $ret

tools/lvchange.c

@@ -94,7 +94,8 @@ static int lvchange_monitoring(struct cmd_context *cmd,
 	if (lv->status & PVMOVE)
 		return 1;
 
-	if (!monitor_dev_for_events(cmd, lv, dmeventd_monitor_mode()))
+	if ((dmeventd_monitor_mode() != DMEVENTD_MONITOR_IGNORE) &&
+	    !monitor_dev_for_events(cmd, lv, dmeventd_monitor_mode()))
 		stack;
 
 	return 1;
@@ -591,7 +592,9 @@ static int lvchange_single(struct cmd_context *cmd, struct logical_volume *lv,
 		return ECMD_FAILED;
 	}
 
-	init_dmeventd_monitor(arg_int_value(cmd, monitor_ARG, DEFAULT_DMEVENTD_MONITOR));
+	init_dmeventd_monitor(arg_int_value(cmd, monitor_ARG,
+					    cmd->is_static ?
+					    DMEVENTD_MONITOR_IGNORE : DEFAULT_DMEVENTD_MONITOR));
 
 	/* access permission change */
 	if (arg_count(cmd, permission_ARG)) {

tools/vgchange.c

@@ -105,7 +105,8 @@ static int _vgchange_monitoring(struct cmd_context *cmd, struct volume_group *vg
 {
 	int active, monitored;
 
-	if ((active = lvs_in_vg_activated(vg))) {
+	if ((active = lvs_in_vg_activated(vg)) &&
+	    dmeventd_monitor_mode() != DMEVENTD_MONITOR_IGNORE) {
 		monitored = _monitor_lvs_in_vg(cmd, vg, dmeventd_monitor_mode());
 		log_print("%d logical volume(s) in volume group "
 			    "\"%s\" %smonitored",
@@ -146,12 +147,14 @@ static int _vgchange_available(struct cmd_context *cmd, struct volume_group *vg)
 	if (activate && (active = lvs_in_vg_activated(vg))) {
 		log_verbose("%d logical volume(s) in volume group \"%s\" "
 			    "already active", active, vg->name);
+		if (dmeventd_monitor_mode() != DMEVENTD_MONITOR_IGNORE) {
 			monitored = _monitor_lvs_in_vg(cmd, vg, dmeventd_monitor_mode());
 			log_verbose("%d existing logical volume(s) in volume "
 				    "group \"%s\" %smonitored",
 				    monitored, vg->name,
 				    dmeventd_monitor_mode() ? "" : "un");
 		}
+	}
 
 	if (activate && _activate_lvs_in_vg(cmd, vg, available))
 		log_verbose("Activated logical volumes in "
@@ -532,7 +535,9 @@ static int vgchange_single(struct cmd_context *cmd, const char *vg_name,
 		return ECMD_FAILED;
 	}
 
-	init_dmeventd_monitor(arg_int_value(cmd, monitor_ARG, DEFAULT_DMEVENTD_MONITOR));
+	init_dmeventd_monitor(arg_int_value(cmd, monitor_ARG,
+					    cmd->is_static ?
+					    DMEVENTD_MONITOR_IGNORE : DEFAULT_DMEVENTD_MONITOR));
 
 	if (arg_count(cmd, available_ARG))
 		r = _vgchange_available(cmd, vg);