#!@BASH_SHELL@ # # Copyright (c) 2014 David Vossel # All Rights Reserved. # # This program is free software; you can redistribute it and/or modify # it under the terms of version 2 of the GNU General Public License as # published by the Free Software Foundation. # # This program is distributed in the hope that it would be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # # Further, this software is distributed without any warranty that it is # free of the rightful claim of any third person regarding infringement # or the like. Any license provided herein, whether implied or # otherwise, applies only to this software file. Patent licenses, if # any, provided herein do not apply to combinations of this program with # other software, or any other product whatsoever. # # You should have received a copy of the GNU General Public License # along with this program; if not, write the Free Software Foundation, # Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. # ####################################################################### # Initialization: : ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat} . ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs . ${OCF_FUNCTIONS_DIR}/ocf-directories # Parameter defaults OCF_RESKEY_source_host_default="" OCF_RESKEY_notify_args_default="" : ${OCF_RESKEY_source_host=${OCF_RESKEY_source_host_default}} : ${OCF_RESKEY_notify_args=${OCF_RESKEY_notify_args_default}} ####################################################################### sbindir=$HA_SBIN_DIR if [ -z "$sbindir" ]; then sbindir=/usr/sbin fi SELINUX_ENABLED=-1 NFSNOTIFY_TMP_DIR="${HA_RSCTMP}/nfsnotify_${OCF_RESOURCE_INSTANCE}/" HA_STATD_PIDFILE="$NFSNOTIFY_TMP_DIR/rpc.statd_${OCF_RESOURCE_INSTANCE}.pid" HA_STATD_PIDFILE_PREV="$NFSNOTIFY_TMP_DIR/rpc.statd_${OCF_RESOURCE_INSTANCE}.pid.prev" STATD_PATH="/var/lib/nfs/statd" SM_NOTIFY_BINARY="${sbindir}/sm-notify" IS_RENOTIFY=0 meta_data() { cat < 1.0 This agent sends NFSv3 reboot notifications to clients which informs clients to reclaim locks. sm-notify reboot notifications Comma separated list of floating IP addresses or host names that clients use to access the nfs service. This will be used to set the source address and mon_name of the SN_NOTIFY reboot notifications. source IP addresses Additional arguments to send to the sm-notify command. By default this agent will always set sm-notify's '-f' option. When the source_host option is set, the '-v' option will be used automatically to set the proper source address. Any additional sm-notify arguments set with this option will be used in addition to the previous default arguments. sm-notify arguments END } v3notify_usage() { cat < /dev/null 2>&1 if [ $? -eq 0 ]; then # it is useful to know if sm-notify processes were actually left around # or not during the stop/start operation. Whether this condition is true # or false does not indicate a failure. It does indicate that # there are probably some unresponsive nfs clients out there that are keeping # the sm-notify processes retrying. ocf_log info "previous sm-notify processes terminated before $__OCF_ACTION action." fi } v3notify_stop() { killall_smnotify rm -f $HA_STATD_PIDFILE_PREV > /dev/null 2>&1 mv $HA_STATD_PIDFILE $HA_STATD_PIDFILE_PREV > /dev/null 2>&1 return $OCF_SUCCESS } check_statd_pidfile() { local binary="rpc.statd" local pidfile="$HA_STATD_PIDFILE" ocf_log debug "Checking status for ${binary}." if [ -e "$pidfile" ]; then cat /proc/$(cat $pidfile)/cmdline 2>/dev/null | grep -a "${binary}" > /dev/null 2>&1 if [ $? -eq 0 ]; then return $OCF_SUCCESS fi ocf_exit_reason "$(cat $pidfile) for $binary is no longer running, sm-notify needs to re-notify clients" return $OCF_ERR_GENERIC fi # if we don't have a pid file for rpc.statd, we have not yet sent the notifications return $OCF_NOT_RUNNING } write_statd_pid() { local binary="rpc.statd" local pidfile="$HA_STATD_PIDFILE" local pid pid=$(pgrep ${binary}) case $? in 0) ocf_log info "PID file (pid:${pid} at $pidfile) created for ${binary}." mkdir -p $(dirname $pidfile) echo "$pid" > $pidfile return $OCF_SUCCESS;; 1) rm -f "$pidfile" > /dev/null 2>&1 ocf_log info "$binary is not running" return $OCF_NOT_RUNNING;; *) rm -f "$pidfile" > /dev/null 2>&1 ocf_exit_reason "Error encountered detecting pid status of $binary" return $OCF_ERR_GENERIC;; esac } copy_statd() { local src=$1 local dest=$2 if ! [ -d "$dest" ]; then mkdir -p "$dest" fi cp -rpfn $src/sm $src/sm.bak $src/state $dest > /dev/null 2>&1 # make sure folder ownership and selinux lables stay consistent [ -n "`id -u rpcuser`" -a "`id -g rpcuser`" ] && chown rpcuser.rpcuser "$dest" [ $SELINUX_ENABLED -eq 0 ] && chcon -R "$SELINUX_LABEL" "$dest" } v3notify_start() { local rc=$OCF_SUCCESS local cur_statd local statd_backup local is_renotify=0 # monitor, see if we need to notify or not v3notify_monitor if [ $? -eq 0 ]; then return $OCF_SUCCESS fi # kill off any other sm-notify processes that might already be running. killall_smnotify # record the pid of rpc.statd. if this pid ever changes, we have to re-notify write_statd_pid rc=$? if [ $rc -ne 0 ]; then return $rc fi # if the last time we ran nfs-notify, it was with the same statd process, # consider this a re-notification. During re-notifications we do not let the # sm-notify binary have access to the real statd directory. if [ "$(cat $HA_STATD_PIDFILE)" = "$(cat $HA_STATD_PIDFILE_PREV 2>/dev/null)" ]; then ocf_log info "Renotifying clients" is_renotify=1 fi statd_backup="$STATD_PATH/nfsnotify.bu" copy_statd "$STATD_PATH" "$statd_backup" if [ -z "$OCF_RESKEY_source_host" ]; then if [ "$is_renotify" -eq 0 ]; then cur_statd="$STATD_PATH" else cur_statd="$statd_backup" fi ocf_log info "sending notifications on default source address." $SM_NOTIFY_BINARY -f $OCF_RESKEY_notify_args -P $cur_statd if [ $? -ne 0 ]; then ocf_exit_reason "sm-notify execution failed, view syslog for more information" return $OCF_ERR_GENERIC fi return $OCF_SUCCESS fi # do sm-notify for each ip for ip in `echo ${OCF_RESKEY_source_host} | sed 's/,/ /g'`; do # have the first sm-notify use the actual statd directory so the # notify list can be managed properly. if [ "$is_renotify" -eq 0 ]; then cur_statd="$STATD_PATH" # everything after the first notify we are considering a renotification # which means we don't use the real statd directory. is_renotify=1 else # use our copied statd directory for the remaining ip addresses cur_statd="$STATD_PATH/nfsnotify_${OCF_RESOURCE_INSTANCE}_${ip}" copy_statd "$statd_backup" "$cur_statd" fi ocf_log info "sending notifications with source address $ip" $SM_NOTIFY_BINARY -f $OCF_RESKEY_notify_args -v $ip -P "$cur_statd" if [ $? -ne 0 ]; then ocf_exit_reason "sm-notify with source host set to [ $ip ] failed. view syslog for more information" return $OCF_ERR_GENERIC fi done return $OCF_SUCCESS } v3notify_monitor() { # verify rpc.statd is up, and that the rpc.statd pid is the same one we # found during the start. otherwise rpc.statd recovered and we need to notify # again. check_statd_pidfile } case $__OCF_ACTION in meta-data) meta_data exit $OCF_SUCCESS;; usage|help) v3notify_usage exit $OCF_SUCCESS;; *) ;; esac which restorecon > /dev/null 2>&1 && selinuxenabled SELINUX_ENABLED=$? if [ $SELINUX_ENABLED -eq 0 ]; then export SELINUX_LABEL="$(ls -dZ $STATD_PATH | grep -o '\S\+:\S\+:\S\+')" fi case $__OCF_ACTION in start) v3notify_start;; stop) v3notify_stop;; monitor) v3notify_monitor;; validate-all) v3notify_validate;; *) v3notify_usage exit $OCF_ERR_UNIMPLEMENTED;; esac rc=$? ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION : $rc" exit $rc