#!@BASH_PATH@
#
# ocf:pacemaker:o2cb resource agent
#
# Original copyright 2005-2008 Oracle
# Later changes copyright 2008-2019 the Pacemaker project contributors
#
# The version control history for this file may have further details.
#
# This source code is licensed under the GNU General Public License version 2
# (GPLv2) WITHOUT ANY WARRANTY.
#
#######################################################################
: ${OCF_FUNCTIONS:="${OCF_ROOT}/resource.d/heartbeat/.ocf-shellfuncs"}
. "${OCF_FUNCTIONS}"
: ${__OCF_ACTION:="$1"}
: ${OCF_RESKEY_stack:="pcmk"}
: ${OCF_RESKEY_sysfs:="/sys/fs"}
: ${OCF_RESKEY_configfs:="/sys/kernel/config"}
: ${OCF_RESKEY_daemon_timeout:="10"} # How long to wait for things to start
: ${OCF_RESKEY_CRM_meta_globally_unique:="false"}
DAEMON="/usr/sbin/ocfs2_controld.${OCF_RESKEY_stack}"
CLUSTER_STACK_FILE="${OCF_RESKEY_sysfs}/ocfs2/cluster_stack"
LOADED_PLUGINS_FILE="${OCF_RESKEY_sysfs}/ocfs2/loaded_cluster_plugins"
#
# Check to see if a filesystem driver is loaded.
# 0 is loaded, 1 is not.
#
driver_filesystem() {
if [ -z "$1" ]
then
ocf_log err "driver_filesystem(): Missing an argument"
exit 1
fi
FSNAME="$1"
FSOUT="$(awk '(NF == 1 && $1 ~ /^'$FSNAME'$/) || $2 ~ /^'$FSNAME'$/{
print $1;exit
}' /proc/filesystems 2>/dev/null)"
test -n "$FSOUT"
return $?
}
#
# Check to see if a filesystem of type $1 is mounted at $2.
#
# 0 is mounted, 1 is not.
#
check_filesystem()
{
if [ $# -ne 2 -o -z "$1" -o -z "$2" ]
then
ocf_log err "check_filesystem(): Missing arguments"
exit 4
fi
FSNAME="$1"
MOUNTPOINT="$2"
FULL_MOUNTSEARCH=$(echo "$MOUNTPOINT" | sed -e 's/\//\\\\\//g')
MOUNTOUT=$(awk '$2 ~ /^'$FULL_MOUNTSEARCH'$/ && $3 ~ /^'$FSNAME'$/{print $2; exit}' < /proc/mounts 2>/dev/null)
test -n "$MOUNTOUT"
return $?
}
#
# Unload a filesystem driver.
# Be careful to notice if the driver is built-in and do nothing.
#
# 0 is success, 1 is error, 2 is already unloaded.
#
unload_filesystem()
{
if [ $# -ne 1 -o -z "$1" ]
then
ocf_log err "unload_filesystem(): Missing an argument"
return 1
fi
FSNAME="$1"
driver_filesystem "$FSNAME" || return 2
MODOUT=$(awk '$1 ~ /^'$FSNAME'$/{print $1,$3;exit}' < /proc/modules 2>/dev/null)
if [ -z "$MODOUT" ]; then
# The driver is built in, we can't unload it.
return 0
fi
case "$MODOUT" in
$FSNAME\ 0)
;;
$FSNAME\ *)
# The driver is busy, leave it alone
ocf_log err "Module $FSNAME is still in use"
return 1
;;
*)
ocf_log err "Invalid module parsing! "
return 1
;;
esac
modprobe -rs "$FSNAME"
if [ $? -ne 0 ]; then
ocf_log err "Unable to unload module: $FSNAME"
return 1
fi
return 0
}
status_daemon()
{
PID=$(pidof "$DAEMON")
if [ -n "$PID" ]; then
return $OCF_SUCCESS
fi
return $OCF_NOT_RUNNING
}
bringup_daemon()
{
if [ ! -e "$DAEMON" ]; then
ocf_log err "Required binary not found: $DAEMON"
return $OCF_ERR_INSTALLED
fi
"$DAEMON"; rc=$?
if [ $rc -ne 0 ]; then
ocf_log err "Could not start $DAEMON"
return $OCF_ERR_GENERIC
fi
sleep 1
COUNT=0
rc=$OCF_NOT_RUNNING
while [ $rc -eq $OCF_NOT_RUNNING ]; do
COUNT=$(expr $COUNT + 1)
if [ $COUNT -gt $OCF_RESKEY_daemon_timeout ]; then
ocf_log err "$(basename $DAEMON) did not come up"
return $OCF_ERR_GENERIC
fi
status_daemon; rc=$?
sleep 1
done
return $rc
}
kill_daemon()
{
status_daemon; rc=$?
if [ $rc -ne $OCF_SUCCESS ]; then
return $rc
fi
ocf_log info "Stopping $(basename "$DAEMON")"
killproc "$DAEMON"
while [ $rc -eq $OCF_NOT_RUNNING ]; do
sleep 1
status_daemon; rc=$?
done
return $OCF_SUCCESS
}
#
# Unload a module
# 0 is success, 1 is error, 2 is not loaded
#
unload_module()
{
if [ $# -lt 1 -o -z "$1" ]
then
ocf_log err "unload_module(): Requires an argument"
return 1
fi
MODNAME="$1"
MODOUT=$(awk '$1 ~ /^'$MODNAME'$/{print $1,$3;exit}' < /proc/modules 2>/dev/null)
if [ -z "$MODOUT" ]
then
return 2
fi
case "$MODOUT" in
$MODNAME\ 0)
;;
$MODNAME\ *)
return 2
;;
*)
ocf_log err "Invalid module parsing!"
return 1
;;
esac
modprobe -rs "$MODNAME"
if [ $? -ne 0 ]; then
ocf_log err "Unable to unload module \"$MODNAME\""
return 1
fi
return 0
}
o2cb_start() {
o2cb_monitor; rc=$?
if [ $rc -ne $OCF_NOT_RUNNING ]; then
return $rc
fi
ocf_log info "Starting $OCF_RESOURCE_INSTANCE"
if [ ! -e "$CLUSTER_STACK_FILE" ]; then
modprobe -s ocfs2_stackglue
if [ $? -ne 0 ]; then
ocf_log err "Could not load ocfs2_stackglue"
return $OCF_ERR_INSTALLED
fi
fi
SP_OUT="$(awk '/^'user'$/{print; exit}' "$LOADED_PLUGINS_FILE" 2>/dev/null)"
if [ -z "$SP_OUT" ]
then
modprobe -s ocfs2_stack_user
if [ $? -ne 0 ]; then
ocf_log err "Could not load ocfs2_stack_user"
return $OCF_ERR_INSTALLED
fi
fi
SP_OUT="$(awk '/^'user'$/{print; exit}' "$LOADED_PLUGINS_FILE" 2>/dev/null)"
if [ -z "$SP_OUT" ]; then
ocf_log err "Switch to userspace stack unsuccessful"
return $OCF_ERR_INSTALLED
fi
if [ -f "$CLUSTER_STACK_FILE" ]; then
echo "$OCF_RESKEY_stack" >"$CLUSTER_STACK_FILE"
if [ $? -ne 0 ]; then
ocf_log err "Userspace stack '$OCF_RESKEY_stack' not supported"
return $OCF_ERR_INSTALLED
fi
else
ocf_log err "Switch to userspace stack not supported"
return $OCF_ERR_INSTALLED
fi
driver_filesystem ocfs2; rc=$?
if [ $rc -ne 0 ]; then
modprobe -s ocfs2
if [ $? -ne 0 ]; then
ocf_log err "Unable to load ocfs2 module"
return $OCF_ERR_INSTALLED
fi
fi
bringup_daemon
return $?
}
o2cb_stop() {
o2cb_monitor; rc=$?
case $rc in
$OCF_NOT_RUNNING) return $OCF_SUCCESS;;
esac
ocf_log info "Stopping $OCF_RESOURCE_INSTANCE"
kill_daemon
if [ $? -ne 0 ]; then
ocf_log err "Unable to unload modules: the cluster is still online"
return $OCF_ERR_GENERIC
fi
unload_filesystem ocfs2
if [ $? -eq 1 ]; then
ocf_log err "Unable to unload ocfs2 module"
return $OCF_ERR_GENERIC
fi
# If we can't find the stack glue, we have nothing to do.
[ ! -e "$LOADED_PLUGINS_FILE" ] && return $OCF_SUCCESS
while read plugin
do
unload_module "ocfs2_stack_${plugin}"
if [ $? -eq 1 ]; then
ocf_log err "Unable to unload ocfs2_stack_${plugin}"
return $OCF_ERR_GENERIC
fi
done <"$LOADED_PLUGINS_FILE"
unload_module "ocfs2_stackglue"
if [ $? -eq 1 ]; then
ocf_log err "Unable to unload ocfs2_stackglue"
return $OCF_ERR_GENERIC
fi
# Don't unmount configfs - it's always in use by libdlm
}
o2cb_monitor() {
o2cb_validate
# Assume that ocfs2_controld will terminate if any of the conditions below are met
driver_filesystem configfs; rc=$?
if [ $rc -ne 0 ]; then
ocf_log info "configfs not loaded"
return $OCF_NOT_RUNNING
fi
check_filesystem configfs "${OCF_RESKEY_configfs}"; rc=$?
if [ $rc -ne 0 ]; then
ocf_log info "configfs not mounted"
return $OCF_NOT_RUNNING
fi
if [ ! -e "$LOADED_PLUGINS_FILE" ]; then
ocf_log info "Stack glue driver not loaded"
return $OCF_NOT_RUNNING
fi
grep user "$LOADED_PLUGINS_FILE" >/dev/null 2>&1; rc=$?
if [ $rc -ne 0 ]; then
ocf_log err "Wrong stack $(cat $LOADED_PLUGINS_FILE)"
return $OCF_ERR_INSTALLED
fi
driver_filesystem ocfs2; rc=$?
if [ $rc -ne 0 ]; then
ocf_log info "ocfs2 not loaded"
return $OCF_NOT_RUNNING
fi
status_daemon
return $?
}
o2cb_usage() {
echo "usage: $0 {start|stop|monitor|validate-all|meta-data}"
echo " Expects to have a fully populated OCF RA-compliant environment set."
echo " In particualr, a value for OCF_ROOT"
}
o2cb_validate() {
check_binary ${DAEMON}
case "${OCF_RESKEY_CRM_meta_globally_unique}" in
yes|Yes|true|True|1)
ocf_log err "$OCF_RESOURCE_INSTANCE must be configured with the globally_unique=false meta attribute"
exit $OCF_ERR_CONFIGURED
;;
esac
return $OCF_SUCCESS
}
meta_data() {
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="o2cb" version="1.0">
<version>1.0</version>
<shortdesc lang="en">OCFS2 daemon resource agent</shortdesc>
<longdesc lang="en">
This Resource Agent controls the userspace daemon needed by OCFS2.
</longdesc>
<parameters>
<parameter name="sysfs" unique="0">
<longdesc lang="en">
Location where sysfs is mounted
</longdesc>
<shortdesc lang="en">Sysfs location</shortdesc>
<content type="string" default="/sys/fs"/>
</parameter>
<parameter name="configfs" unique="0">
<longdesc lang="en">
Location where configfs is mounted
</longdesc>
<shortdesc lang="en">Configfs location</shortdesc>
<content type="string" default="/sys/kernel/config"/>
</parameter>
<parameter name="stack" unique="0">
<longdesc lang="en">
Which userspace stack to use. Known values: pcmk
</longdesc>
<shortdesc lang="en">Userspace stack</shortdesc>
<content type="string" default="pcmk"/>
</parameter>
<parameter name="daemon_timeout" unique="0">
<longdesc lang="en">
Number of seconds to allow the control daemon to come up
</longdesc>
<shortdesc lang="en">Daemon Timeout</shortdesc>
<content type="string" default="10"/>
</parameter>
</parameters>
<actions>
<action name="start" timeout="90s" />
<action name="stop" timeout="100s" />
<action name="monitor" timeout="20s" depth="0"/>
<action name="meta-data" timeout="5s" />
<action name="validate-all" timeout="30s" />
</actions>
</resource-agent>
END
}
case "$__OCF_ACTION" in
meta-data) meta_data
exit $OCF_SUCCESS
;;
start) o2cb_start
;;
stop) o2cb_stop
;;
monitor) o2cb_monitor
;;
validate-all) o2cb_validate
;;
usage|help) o2cb_usage
exit $OCF_SUCCESS
;;
*) o2cb_usage
exit $OCF_ERR_UNIMPLEMENTED
;;
esac
exit $?
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