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- #!/bin/bash
- #
- # flashcache Init Script to manage cachedev loads
- #
- # chkconfig: 345 9 98
- # description: Flashcache Management
- # Flashcache options
- # modify this before using this init script
- SSD_DISK=/dev/sdc
- BACKEND_DISK=/dev/md127
- CACHEDEV_NAME=flashcache0
- MOUNTPOINT=/kvm
- FLASHCACHE_NAME=sdc+md127
- # Just a check, to validate the above params are set
- [ -z "$SSD_DISK" ] && exit 10
- [ -z "$BACKEND_DISK" ] && exit 11
- [ -z "$CACHEDEV_NAME" ] && exit 12
- [ -z "$MOUNTPOINT" ] && exit 13
- [ -z "$FLASHCACHE_NAME" ] && exit 14
- # Source function library.
- . /etc/rc.d/init.d/functions
- #globals
- DMSETUP=`/usr/bin/which dmsetup`
- SERVICE=flashcache
- FLASHCACHE_LOAD=/sbin/flashcache_load
- SUBSYS_LOCK=/var/lock/subsys/$SERVICE
- RETVAL=0
- start() {
- echo "Starting Flashcache..."
- #Load the module
- /sbin/modprobe flashcache
- RETVAL=$?
- if [ $RETVAL -ne 0 ]; then
- echo "Module Load Error: flashcache. Exited with status - $RETVAL"
- exit $RETVAL
- fi
- #flashcache_load the cachedev
- $FLASHCACHE_LOAD $SSD_DISK $CACHEDEV_NAME
- RETVAL=$?
- if [ $RETVAL -ne 0 ]; then
- echo "Failed: flashcache_load $SSD_DISK $CACHEDEV_NAME"
- exit $RETVAL;
- fi
- #mount
- if [ -L /dev/mapper/$CACHEDEV_NAME ]; then
- RETVAL=$?
- ## /bin/mount /dev/mapper/$CACHEDEV_NAME $MOUNTPOINT
- ## RETVAL=$?
- ## if [ $RETVAL -ne 0 ]; then
- ## echo "Mount Failed: /dev/mapper/$CACHEDEV_NAME to $MOUNTPOINT"
- ## exit $RETVAL
- ## fi
- else
- echo "Not Found: /dev/mapper/$CACHEDEV_NAME"
- exit 1
- fi
- #lock subsys
- touch $SUBSYS_LOCK
- }
- stop() {
- #unmount
- # /bin/umount $MOUNTPOINT
- #check for force flag
- FLAG=0
- [ "$1" == '--force' ] && FLAG=1
- /sbin/sysctl -w dev.flashcache.$FLASHCACHE_NAME.fast_remove=$FLAG
- echo "Flushing flashcache: Flushes to $BACKEND_DISK"
- $DMSETUP remove $CACHEDEV_NAME
- #unlock subsys
- rm -f $SUBSYS_LOCK
- }
- status() {
- [ -f $SUBSYS_LOCK ] && echo "Flashcache status: loaded" || echo "Flashcache status: NOT loaded";
- $DMSETUP status $CACHEDEV_NAME
- exit $?
- }
- case $1 in
- start)
- start
- ;;
- stop)
- stop
- ;;
- status)
- status
- ;;
- forcestop)
- stop --force
- ;;
- *)
- echo "Usage: $0 {start|stop|status}"
- exit 1
- esac
- exit 0
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