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b208ae73d1
SC2154: VAR is referenced but not assigned. Change ctdb_setup_service_state_dir(), ctdb_get_pnn() and ctdb_get_ip_address() to print the value so it can be assigned to a variable. The performance gain from avoiding the sub-shells when calling these functions is close to zero. Signed-off-by: Martin Schwenke <martin@meltin.net> Reviewed-by: Amitay Isaacs <amitay@gmail.com>
83 lines
1.8 KiB
Bash
Executable File
83 lines
1.8 KiB
Bash
Executable File
#!/bin/sh
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# ctdb event script for monitoring the multipath daemon
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#
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# Configure monitporing of multipath devices by listing the device serials
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# in /etc/ctdb/multipathd :
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# CTDB_MONITOR_MPDEVICES="device1 device2 ..."
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#
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[ -n "$CTDB_BASE" ] || \
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CTDB_BASE=$(d=$(dirname "$0") ; cd -P "$d" ; dirname "$PWD")
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. "${CTDB_BASE}/functions"
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# service_name is used by various functions
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# shellcheck disable=SC2034
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service_name="multipathd"
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loadconfig
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[ -n "$CTDB_MONITOR_MPDEVICES" ] || exit 0
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service_state_dir=$(ctdb_setup_service_state_dir) || exit $?
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multipath_fail="${service_state_dir}/fail"
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multipathd_check_background()
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{
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for _device in $CTDB_MONITOR_MPDEVICES; do
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# Check multipath knows about the device
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_out=$(multipath -ll "$_device")
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if [ -z "$_out" ] ; then
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echo "device \"${_device}\" not known to multipathd" >"$multipath_fail"
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exit 1
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fi
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# Check for at least 1 active path
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if ! echo "$_out" | grep 'prio=.* status=active' >/dev/null 2>&1 ; then
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echo "multipath device \"${_device}\" has no active paths" >"$multipath_fail"
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exit 1
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fi
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done
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exit 0
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}
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multipathd_check()
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{
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# Run the actual check in the background since the call to
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# multipath may block
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multipathd_check_background </dev/null >/dev/null 2>&1 &
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_pid="$!"
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_timeleft=10
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while [ $_timeleft -gt 0 ]; do
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_timeleft=$((_timeleft - 1))
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# see if the process still exists
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kill -0 $_pid >/dev/null 2>&1 || {
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if wait $_pid ; then
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return 0
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else
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echo -n "ERROR: "
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cat "$multipath_fail"
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rm -f "$multipath_fail"
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return 1
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fi
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}
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sleep 1
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done
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echo "ERROR: callout to multipath checks hung"
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# If hung then this probably won't work, but worth trying...
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kill -9 $_pid >/dev/null 2>&1
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return 1
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}
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case "$1" in
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monitor)
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multipathd_check || die "multipath monitoring failed"
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;;
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esac
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exit 0
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