Bug#587678: multipath-tools: check for multipathd process before start

[Ritesh Raj Sarraf]

Package: multipath-tools
Version: 0.4.8+git0.761c66f-9
Severity: normal
Tags: patch

On upgrade, multipathd start can fail if it is already running.
The initscript does not do any checks for that.

Attached patch takes care of it.

--- /etc/init.d/multipath-tools	2010-04-11 16:54:28.000000000 +0530
+++ /tmp/multipath-tools	2010-07-01 01:24:03.442285462 +0530
@@ -28,6 +28,10 @@
 
 case "$1" in
   start)
+	if [ `pidof $NAME` ]; then
+		log_daemon_msg "$NAME already running"
+		exit 0;
+	fi
 	log_daemon_msg "Starting $DESC" "$NAME"
 	start-stop-daemon --start --quiet --pidfile /var/run/$NAME.pid --exec $DAEMON -- $DAEMON_OPTS
 	log_end_msg $?

-- Package-specific info:
/etc/multipath.conf does not exist.


-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (101, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.34-1-686 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages multipath-tools depends on:
ii  initscripts         2.88dsf-9            scripts for initializing and shutt
ii  kpartx              0.4.8+git0.761c66f-9 create device mappings for partiti
ii  libaio1             0.3.107-7            Linux kernel AIO access library - 
ii  libc6               2.11.1-3             Embedded GNU C Library: Shared lib
ii  libdevmapper1.02.1  2:1.02.48-2          The Linux Kernel Device Mapper use
ii  libncurses5         5.7+20100313-2       shared libraries for terminal hand
ii  libreadline6        6.1-3                GNU readline and history libraries
ii  lsb-base            3.2-23.1             Linux Standard Base 3.2 init scrip
ii  udev                157-1                /dev/ and hotplug management daemo

multipath-tools recommends no packages.

Versions of packages multipath-tools suggests:
pn  multipath-tools-boot          <none>     (no description available)

-- no debconf information
-------------- next part --------------
--- /etc/init.d/multipath-tools	2010-04-11 16:54:28.000000000 +0530
+++ /tmp/multipath-tools	2010-07-01 01:24:03.442285462 +0530
@@ -28,6 +28,10 @@
 
 case "$1" in
   start)
+	if [ `pidof $NAME` ]; then
+		log_daemon_msg "$NAME already running"
+		exit 0;
+	fi
 	log_daemon_msg "Starting $DESC" "$NAME"
 	start-stop-daemon --start --quiet --pidfile /var/run/$NAME.pid --exec $DAEMON -- $DAEMON_OPTS
 	log_end_msg $?