- Català: Aquesta pàgina no està traduida encara al català.
- Castellano: Esta página no está traducida aún al castellano.
Writeboost¶
#!/bin/sh
#
#
# DM-WRITEBOOST OCF RA. Does nothing but wait a few seconds, can be
# configured to fail occassionally.
#
# Copyright (c) 2004 SUSE LINUX AG, Lars Marowsky-Br�e
# 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:
: ${OCF_FUNCTIONS=${OCF_ROOT}/resource.d/heartbeat/.ocf-shellfuncs}
. ${OCF_FUNCTIONS}
: ${__OCF_ACTION=$1}
#######################################################################
meta_data() {
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="writeboost" version="1.0">
<version>1.0</version>
<longdesc lang="en">
dm-writeboost cache
</longdesc>
<shortdesc lang="en">writeboost</shortdesc>
<parameters>
<parameter name="state" unique="1">
<longdesc lang="en">
Location to store the resource state in.
</longdesc>
<shortdesc lang="en">State file</shortdesc>
<content type="string" default="${HA_VARRUN}/WRITEBOOST-{OCF_RESOURCE_INSTANCE}.state" />
</parameter>
<parameter name="passwd" unique="1">
<longdesc lang="en">
Fake password field
</longdesc>
<shortdesc lang="en">Password</shortdesc>
<content type="string" default="" />
</parameter>
<parameter name="fake" unique="0">
<longdesc lang="en">
Fake attribute that can be changed to cause a reload
</longdesc>
<shortdesc lang="en">Fake attribute that can be changed to cause a reload</shortdesc>
<content type="string" default="writeboost" />
</parameter>
<parameter name="op_sleep" unique="1">
<longdesc lang="en">
Number of seconds to sleep during operations. This can be used to test how
the cluster reacts to operation timeouts.
</longdesc>
<shortdesc lang="en">Operation sleep duration in seconds.</shortdesc>
<content type="string" default="0" />
</parameter>
</parameters>
<actions>
<action name="start" timeout="3600" />
<action name="stop" timeout="1111" />
<action name="monitor" timeout="20" interval="10" depth="0"/>
<action name="reload" timeout="20" />
<action name="migrate_to" timeout="20" />
<action name="migrate_from" timeout="20" />
<action name="validate-all" timeout="20" />
<action name="meta-data" timeout="5" />
</actions>
</resource-agent>
END
}
#######################################################################
# don't exit on TERM, to test that lrmd makes sure that we do exit
trap sigterm_handler TERM
sigterm_handler() {
ocf_log info "They use TERM to bring us down. No such luck."
return
}
writeboost_usage() {
cat <<END
usage: $0 {start|stop|monitor|migrate_to|migrate_from|validate-all|meta-data}
Expects to have a fully populated OCF RA-compliant environment set.
END
}
writeboost_start() {
/sbin/writeboost
touch ${OCF_RESKEY_state}
return $OCF_SUCCESS
}
writeboost_stop() {
/sbin/writeboost -u
rm ${OCF_RESKEY_state}
return $OCF_SUCCESS
}
writeboost_monitor() {
# Monitor _MUST!_ differentiate correctly between running
# (SUCCESS), failed (ERROR) or _cleanly_ stopped (NOT RUNNING).
# That is THREE states, not just yes/no.
if [ "$OCF_RESKEY_op_sleep" -ne "0" ]; then
if [ -f ${VERIFY_SERIALIZED_FILE} ]; then
# two monitor ops have occurred at the same time.
# this is to verify a condition in the lrmd regression tests.
ocf_log err "$VERIFY_SERIALIZED_FILE exists already"
return $OCF_ERR_GENERIC
fi
touch ${VERIFY_SERIALIZED_FILE}
sleep ${OCF_RESKEY_op_sleep}
rm ${VERIFY_SERIALIZED_FILE}
fi
if [ -f ${OCF_RESKEY_state} ]; then
return $OCF_SUCCESS
fi
if false ; then
return $OCF_ERR_GENERIC
fi
return $OCF_NOT_RUNNING
}
writeboost_validate() {
# Is the state directory writable?
state_dir=`dirname "$OCF_RESKEY_state"`
touch "$state_dir/$$"
if [ $? != 0 ]; then
return $OCF_ERR_ARGS
fi
rm "$state_dir/$$"
return $OCF_SUCCESS
}
: ${OCF_RESKEY_fake=writeboost}
: ${OCF_RESKEY_op_sleep=0}
: ${OCF_RESKEY_CRM_meta_interval=0}
: ${OCF_RESKEY_CRM_meta_globally_unique:="true"}
if [ "x$OCF_RESKEY_state" = "x" ]; then
if [ ${OCF_RESKEY_CRM_meta_globally_unique} = "false" ]; then
state="${HA_VARRUN}/WRITEBOOST-${OCF_RESOURCE_INSTANCE}.state"
# Strip off the trailing clone marker
OCF_RESKEY_state=`echo $state | sed s/:[0-9][0-9]*\.state/.state/`
else
OCF_RESKEY_state="${HA_VARRUN}/WRITEBOOST-${OCF_RESOURCE_INSTANCE}.state"
fi
fi
VERIFY_SERIALIZED_FILE="${OCF_RESKEY_state}.serialized"
case $__OCF_ACTION in
meta-data) meta_data
exit $OCF_SUCCESS
;;
start) writeboost_start;;
stop) writeboost_stop;;
monitor) writeboost_monitor;;
migrate_to) ocf_log info "Migrating ${OCF_RESOURCE_INSTANCE} to ${OCF_RESKEY_CRM_meta_migrate_target}."
writeboost_stop
;;
migrate_from) ocf_log info "Migrating ${OCF_RESOURCE_INSTANCE} to ${OCF_RESKEY_CRM_meta_migrate_source}."
writeboost_start
;;
reload) ocf_log err "Reloading..."
writeboost_start
;;
validate-all) writeboost_validate;;
usage|help) writeboost_usage
exit $OCF_SUCCESS
;;
*) writeboost_usage
exit $OCF_ERR_UNIMPLEMENTED
;;
esac
rc=$?
ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION : $rc"
exit $rc
Last update:
June 28, 2023