2a005961a4
These days most disk drivers will probe for devices asynchronously. This means it's possible that when you zfs init script runs all the required block devices may not yet have been discovered. The result is the pool may fail to cleanly import at boot time. This is particularly common when you have a large number of devices. The fix is for the init script to block until udev settles and we are no longer detecting new devices. Once the system has settled the zfs modules can be loaded and the pool with be automatically imported.
170 lines
4.1 KiB
Bash
170 lines
4.1 KiB
Bash
#!/bin/bash
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#
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# zfs This script will mount/umount the zfs filesystems.
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#
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# chkconfig: 2345 01 99
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# description: This script will mount/umount the zfs filesystems during
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# system boot/shutdown. Configuration of which filesystems
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# should be mounted is handled by the zfs 'mountpoint' and
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# 'canmount' properties. See the zfs(8) man page for details.
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# It is also responsible for all userspace zfs services.
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#
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### BEGIN INIT INFO
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# Provides: zfs
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# Required-Start:
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# Required-Stop:
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# Should-Start:
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# Should-Stop:
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# Default-Start: 2 3 4 5
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# Default-Stop: 1
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# Short-Description: Mount/umount the zfs filesystems
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# Description: ZFS is an advanced filesystem designed to simplify managing
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# and protecting your data. This service mounts the ZFS
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# filesystems and starts all related zfs services.
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### END INIT INFO
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export PATH=/usr/local/sbin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin
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# Source function library & LSB routines
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. /etc/rc.d/init.d/functions
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# script variables
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RETVAL=0
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ZPOOL=zpool
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ZFS=zfs
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servicename=zfs
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LOCKFILE=/var/lock/subsys/$servicename
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# functions
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zfs_installed() {
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modinfo zfs > /dev/null 2>&1 || return 5
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$ZPOOL > /dev/null 2>&1
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[ $? == 127 ] && return 5
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$ZFS > /dev/null 2>&1
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[ $? == 127 ] && return 5
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return 0
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}
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# i need a bash guru to simplify this, since this is copy and paste, but donno how
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# to correctly dereference variable names in bash, or how to do this right
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# first parameter is a regular expression that filters fstab
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read_fstab() {
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unset FSTAB
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n=0
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while read -r fs mntpnt fstype opts blah ; do
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fs=`printf '%b\n' "$fs"`
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FSTAB[$n]=$fs
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let n++
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done < <(egrep "$1" /etc/fstab)
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}
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start()
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{
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# Disable lockfile check
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# if [ -f "$LOCKFILE" ] ; then return 0 ; fi
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# check if ZFS is installed. If not, comply to FC standards and bail
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zfs_installed || {
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action $"Checking if ZFS is installed: not installed" /bin/false
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return 5
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}
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# Requires selinux policy which has not been written.
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if [ -r "/selinux/enforce" ] &&
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[ "$(cat /selinux/enforce)" = "1" ]; then
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action $"SELinux ZFS policy required: " /bin/false || return 6
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fi
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# Delay until all required block devices are present.
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udevadm settle
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# load kernel module infrastructure
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if ! grep -q zfs /proc/modules ; then
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action $"Loading kernel ZFS infrastructure: " modprobe zfs || return 5
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fi
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sleep 1
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action $"Mounting automounted ZFS filesystems: " $ZFS mount -a || return 152
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# Read fstab, try to mount zvols ignoring error
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read_fstab "^/dev/(zd|zvol)"
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template=$"Mounting volume %s registered in fstab: "
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for volume in "${FSTAB[@]}" ; do
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string=`printf "$template" "$volume"`
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action "$string" mount "$volume" 2>/dev/null || /bin/true
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done
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# touch "$LOCKFILE"
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}
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stop()
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{
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# Disable lockfile check
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# if [ ! -f "$LOCKFILE" ] ; then return 0 ; fi
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# check if ZFS is installed. If not, comply to FC standards and bail
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zfs_installed || {
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action $"Checking if ZFS is installed: not installed" /bin/false
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return 5
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}
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# the poweroff of the system takes care of this
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# but it never unmounts the root filesystem itself
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# shit
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action $"Syncing ZFS filesystems: " sync
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# about the only thing we can do, and then we
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# hope that the umount process will succeed
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# unfortunately the umount process does not dismount
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# the root file system, there ought to be some way
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# we can tell zfs to just flush anything in memory
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# when a request to remount,ro comes in
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#echo -n $"Unmounting ZFS filesystems: "
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#$ZFS umount -a
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#RETVAL=$?
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#if [ $RETVAL -ne 0 ]; then
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# failure
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# return 8
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#fi
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#success
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rm -f "$LOCKFILE"
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}
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# See how we are called
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case "$1" in
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start)
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start
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RETVAL=$?
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;;
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stop)
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stop
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RETVAL=$?
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;;
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status)
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lsmod | grep -q zfs || RETVAL=3
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$ZPOOL status && echo && $ZFS list || {
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[ -f "$LOCKFILE" ] && RETVAL=2 || RETVAL=4
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}
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;;
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restart)
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stop
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start
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;;
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condrestart)
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if [ -f "$LOCKFILE" ] ; then
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stop
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start
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fi
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;;
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*)
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echo $"Usage: $0 {start|stop|status|restart|condrestart}"
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RETVAL=3
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;;
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esac
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exit $RETVAL
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