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|
#!/bin/bash
#
# zfs This script will mount/umount the zfs filesystems.
#
# chkconfig: 2345 01 99
# description: This script will mount/umount the zfs filesystems during
# system boot/shutdown. Configuration of which filesystems
# should be mounted is handled by the zfs 'mountpoint' and
# 'canmount' properties. See the zfs(8) man page for details.
# It is also responsible for all userspace zfs services.
#
### BEGIN INIT INFO
# Provides: zfs
# Required-Start:
# Required-Stop:
# Should-Start:
# Should-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 1
# Short-Description: Mount/umount the zfs filesystems
# Description: ZFS is an advanced filesystem designed to simplify managing
# and protecting your data. This service mounts the ZFS
# filesystems and starts all related zfs services.
### END INIT INFO
export PATH=/usr/local/sbin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin
if [ -z "$init" ]; then
# Not interactive
grep -Eqi 'zfs=off|zfs=no' /proc/cmdline && exit 3
fi
# Source function library & LSB routines
. /etc/rc.d/init.d/functions
# script variables
RETVAL=0
ZFS="@sbindir@/zfs"
ZPOOL="@sbindir@/zpool"
ZPOOL_CACHE="@sysconfdir@/zfs/zpool.cache"
servicename=zfs
LOCKFILE=/var/lock/subsys/$servicename
# functions
zfs_installed() {
modinfo zfs > /dev/null 2>&1 || return 5
$ZPOOL > /dev/null 2>&1
[ $? == 127 ] && return 5
$ZFS > /dev/null 2>&1
[ $? == 127 ] && return 5
return 0
}
# i need a bash guru to simplify this, since this is copy and paste, but donno how
# to correctly dereference variable names in bash, or how to do this right
# first parameter is a regular expression that filters fstab
read_fstab() {
unset FSTAB
n=0
while read -r fs mntpnt fstype opts blah ; do
fs=`printf '%b\n' "$fs"`
FSTAB[$n]=$fs
let n++
done < <(egrep "$1" /etc/fstab)
}
start()
{
# Disable lockfile check
# if [ -f "$LOCKFILE" ] ; then return 0 ; fi
# check if ZFS is installed. If not, comply to FC standards and bail
zfs_installed || {
action $"Checking if ZFS is installed: not installed" /bin/false
return 5
}
# Requires selinux policy which has not been written.
if [ -r "/selinux/enforce" ] &&
[ "$(cat /selinux/enforce)" = "1" ]; then
action $"SELinux ZFS policy required: " /bin/false || return 6
fi
# Delay until all required block devices are present.
if [ -x /sbin/udevadm ]; then
/sbin/udevadm settle
elif [ -x /sbin/udevsettle ]; then
/sbin/udevsettle
fi
# load kernel module infrastructure
if ! grep -q zfs /proc/modules ; then
action $"Loading kernel ZFS infrastructure: " modprobe zfs || return 5
fi
sleep 1
action $"Mounting automounted ZFS filesystems: " $ZFS mount -a || return 152
action $"Exporting ZFS filesystems: " $ZFS share -a || return 153
# Read fstab, try to mount zvols ignoring error
read_fstab "^/dev/(zd|zvol)"
template=$"Mounting volume %s registered in fstab: "
for volume in "${FSTAB[@]}" ; do
string=`printf "$template" "$volume"`
action "$string" mount "$volume" 2>/dev/null || /bin/true
done
# touch "$LOCKFILE"
}
stop()
{
# Disable lockfile check
# if [ ! -f "$LOCKFILE" ] ; then return 0 ; fi
# check if ZFS is installed. If not, comply to FC standards and bail
zfs_installed || {
action $"Checking if ZFS is installed: not installed" /bin/false
return 5
}
# the poweroff of the system takes care of this
# but it never unmounts the root filesystem itself
# shit
action $"Syncing ZFS filesystems: " sync
# about the only thing we can do, and then we
# hope that the umount process will succeed
# unfortunately the umount process does not dismount
# the root file system, there ought to be some way
# we can tell zfs to just flush anything in memory
# when a request to remount,ro comes in
#echo -n $"Unmounting ZFS filesystems: "
#$ZFS umount -a
#RETVAL=$?
#if [ $RETVAL -ne 0 ]; then
# failure
# return 8
#fi
#success
rm -f "$LOCKFILE"
}
# See how we are called
case "$1" in
start)
start
RETVAL=$?
;;
stop)
stop
RETVAL=$?
;;
status)
lsmod | grep -q zfs || RETVAL=3
$ZPOOL status && echo && $ZFS list || {
[ -f "$LOCKFILE" ] && RETVAL=2 || RETVAL=4
}
;;
restart)
stop
start
;;
condrestart)
if [ -f "$LOCKFILE" ] ; then
stop
start
fi
;;
*)
echo $"Usage: $0 {start|stop|status|restart|condrestart}"
RETVAL=3
;;
esac
exit $RETVAL
|
