#!/bin/sh # # # LinuxSCSI # # Description: Enables/Disables SCSI devices to protect them from being # used by mistake # # # Author: Alan Robertson # Support: users@clusterlabs.org # License: GNU General Public License (GPL) # Copyright: (C) 2002 - 2005 IBM # # CAVEATS: See the usage message for some important warnings # # usage: ./LinuxSCSI (start|stop|status|monitor|meta-data|validate-all|methods) # # OCF parameters are as below: # OCF_RESKEY_scsi # # An example usage in /etc/ha.d/haresources: # node1 10.0.0.170 LinuxSCSI:0:0:11 # ####################################################################### # Initialization: : ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat} . ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs # Parameter defaults OCF_RESKEY_scsi_default="" OCF_RESKEY_ignore_deprecation_default="false" : ${OCF_RESKEY_scsi=${OCF_RESKEY_scsi_default}} : ${OCF_RESKEY_ignore_deprecation=${OCF_RESKEY_ignore_deprecation_default}} ####################################################################### zeropat="[ 0]0" PROCSCSI=/proc/scsi/scsi usage() { cat < 1.0 Deprecation warning: This agent makes use of Linux SCSI hot-plug functionality which has been superseded by SCSI reservations. It is deprecated and may be removed from a future release. See the scsi2reservation and sfex agents for alternatives. -- This is a resource agent for LinuxSCSI. It manages the availability of a SCSI device from the point of view of the linux kernel. It make Linux believe the device has gone away, and it can make it come back again. Enables and disables SCSI devices through the kernel SCSI hot-plug subsystem (deprecated) The SCSI instance to be managed. SCSI instance If set to true, suppresses the deprecation warning for this agent. Suppress deprecation warning EOF } scsi_methods() { cat <>$PROCSCSI echo "scsi add-single-device $host $channel $target $lun" >>$PROCSCSI if scsi_status "$1" then return $OCF_SUCCESS else ocf_log err "SCSI device $1 not active!" return $OCF_ERR_GENERIC fi } # # stop: Disable the given SCSI device in the kernel # scsi_stop() { parseinst "$1" # [ $target = error ] && exit 1 echo "scsi remove-single-device $host $channel $target $lun" >>$PROCSCSI if scsi_status "$1" then ocf_log err "SCSI device $1 still active!" return $OCF_ERR_GENERIC else return $OCF_SUCCESS fi } # # status: is the given device now available? # scsi_status() { parseinst "$1" # [ $target = error ] && exit 1 [ $channel -eq 0 ] && channel=$zeropat [ $target -eq 0 ] && target=$zeropat [ $lun -eq 0 ] && lun=$zeropat greppat="Host: *scsi$host *Channel: *$channel *Id: *$target *Lun: *$lun" grep -i "$greppat" $PROCSCSI >/dev/null if [ $? -eq 0 ]; then return $OCF_SUCCESS else return $OCF_NOT_RUNNING fi } # # validate_all: Check the OCF instance parameters # scsi_validate_all() { parseinst $instance return $OCF_SUCCESS } if ( [ $# -ne 1 ] ) then ocf_log err "Parameter number error." usage exit $OCF_ERR_GENERIC fi #if # [ -z "$OCF_RESKEY_scsi" ] && [ "X$1" = "Xmethods" ] #then # scsi_methods # exit #? #fi case $1 in methods) scsi_methods exit $OCF_SUCCESS ;; meta-data) meta_data exit $OCF_SUCCESS ;; usage) usage exit $OCF_SUCCESS ;; *) ;; esac # Be obnoxious, log deprecation warning on every invocation (unless # suppressed by resource configuration). ocf_deprecated if [ -z "$OCF_RESKEY_scsi" ] then ocf_log err "You have to set a valid scsi id at least!" # usage exit $OCF_ERR_GENERIC fi instance=$OCF_RESKEY_scsi case $1 in start) scsi_start $instance ;; stop) scsi_stop $instance ;; status|monitor) if scsi_status $instance then ocf_log info "SCSI device $instance is running" return $OCF_SUCCESS else ocf_log info "SCSI device $instance is stopped" exit $OCF_NOT_RUNNING fi ;; validate-all) scsi_validate_all ;; *) usage exit $OCF_ERR_UNIMPLEMENTED ;; esac exit $?