diff --git a/etc/init.d/zfs.fedora b/etc/init.d/zfs.fedora index 275160355..8e48efb7b 100644 --- a/etc/init.d/zfs.fedora +++ b/etc/init.d/zfs.fedora @@ -11,8 +11,8 @@ # ### BEGIN INIT INFO # Provides: zfs -# Required-Start: $local_fs -# Required-Stop: $local_fs +# Required-Start: +# Required-Stop: # Should-Start: # Should-Stop: # Default-Start: 2 3 4 5 @@ -23,72 +23,196 @@ # filesystems and starts all related zfs services. ### END INIT INFO -# Source function library. +export PATH=/usr/local/sbin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin + +# Source function library & LSB routines . /etc/rc.d/init.d/functions -# Source zfs configuration. -[ -f /etc/sysconfig/zfs ] && . /etc/sysconfig/zfs - +# script variables RETVAL=0 +ZPOOL=zpool +ZFS=zfs +servicename=zfs +LOCKFILE=/var/lock/subsys/$servicename -LOCKFILE=/var/lock/subsys/zfs -CACHEFILE=/etc/zfs/zpool.cache -ZPOOL=/usr/sbin/zpool -ZFS=/usr/sbin/zfs +# 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 +} -[ -x $ZPOOL ] || exit 1 -[ -x $ZFS ] || exit 2 +reregister_mounts() { + cat /etc/mtab | while read -r fs mntpnt fstype opts rest ; do + fs=`printf '%b\n' "$fs"` + mntpnt=`printf '%b\n' "$mntpnt"` + if [ "$fstype" == "zfs" ] ; then + if [ "$mntpnt" == "/" ] ; then + mount -f -o zfsutil -t zfs --move / /removethismountpointhoweverpossible + umount --fake /removethismountpointhoweverpossible + else + umount --fake "$mntpnt" + fi + elif echo "$fs" | grep -q "^/dev/zd" ; then + if [ "$mntpnt" == "/" ] ; then + mount -f -t "$fstype" --move / /removethismountpointhoweverpossible + umount --fake /removethismountpointhoweverpossible + else + umount --fake "$mntpnt" + fi + fi + done + cat /proc/mounts | while read -r fs mntpnt fstype opts rest ; do + fs=`printf '%b\n' "$fs"` + mntpnt=`printf '%b\n' "$mntpnt"` + if [ "$fstype" == "zfs" ] ; then + mount -f -t zfs -o zfsutil "$fs" "$mntpnt" + elif echo "$fs" | grep -q "^/dev/zd" ; then + mount -f -t "$fstype" -o "$opts" "$fs" "$mntpnt" + fi + done +} + +# 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 + +declare -A MTAB +declare -A FSTAB + +# first parameter is a regular expression that filters mtab +read_mtab() { + for fs in "${!MTAB[@]}" ; do unset MTAB["$fs"] ; done + while read -r fs mntpnt fstype opts blah ; do + fs=`printf '%b\n' "$fs"` + MTAB["$fs"]=$mntpnt + done < <(grep "$1" /etc/mtab) +} + +in_mtab() { + [ "${MTAB[$1]}" != "" ] + return $? +} + +# first parameter is a regular expression that filters fstab +read_fstab() { + for fs in "${!FSTAB[@]}" ; do unset FSTAB["$fs"] ; done + while read -r fs mntpnt fstype opts blah ; do + fs=`printf '%b\n' "$fs"` + FSTAB["$fs"]=$mntpnt + done < <(grep "$1" /etc/fstab) +} + +in_fstab() { + [ "${FSTAB[$1]}" != "" ] + return $? +} start() { - [ -f $LOCKFILE ] && return 3 + if [ -f "$LOCKFILE" ] ; then return 0 ; fi - # 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 4 + # 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 + + # load kernel module infrastructure + if ! grep -q zfs /proc/modules ; then + action $"Loading kernel ZFS infrastructure: " modprobe zfs || return 5 fi - # Load the zfs module stack - /sbin/modprobe zfs - - # Ensure / exists in /etc/mtab, if not update mtab accordingly. - # This should be handled by rc.sysinit but lets be paranoid. - awk '$2 == "/" { exit 1 }' /etc/mtab - RETVAL=$? - if [ $RETVAL -eq 0 ]; then - /bin/mount -f / + # fix mtab to include already-mounted fs filesystems, in case there are any + # we ONLY do this if mtab does not point to /proc/mounts + # which is the case in some systems (systemd may bring that soon) + if ! readlink /etc/mtab | grep -q /proc ; then + if grep -qE "(^/dev/zd| zfs )" /proc/mounts ; then + action $"Registering already-mounted ZFS filesystems and volumes: " reregister_mounts || return 150 + fi fi - # Import all pools described by the cache file, and then mount - # all filesystem based on their properties. - if [ -f $CACHEFILE ] ; then - action $"Importing ZFS pools: " \ - $ZPOOL import -c $CACHEFILE -aN 2>/dev/null - action $"Mounting ZFS filesystems: " \ - $ZFS mount -a + if [ -f /etc/zfs/zpool.cache ] ; then + + echo -n $"Importing ZFS pools not yet imported: " + $ZPOOL import -c /etc/zfs/zpool.cache -aN || true # stupid zpool will fail if all pools are already imported + RETVAL=$? + if [ $RETVAL -ne 0 ]; then + failure "Importing ZFS pools not yet imported: " + return 151 + fi + success "Importing ZFS pools not yet imported: " + fi - touch $LOCKFILE + action $"Mounting ZFS filesystems not yet mounted: " $ZFS mount -a || return 152 + + # hack to read mounted file systems because otherwise + # zfs returns EPERM when a non-root user reads a mounted filesystem before root did + savepwd="$PWD" + mount | grep " type zfs " | sed 's/.*on //' | sed 's/ type zfs.*$//' | while read line ; do + cd "$line" > /dev/null 2>&1 + ls > /dev/null + done + cd "$savepwd" + + read_mtab "^/dev/zd" + read_fstab "^/dev/zd" + + template=$"Mounting volume %s registered in fstab: " + for volume in "${!FSTAB[@]}" ; do + if in_mtab "$volume" ; then continue ; fi + string=`printf "$template" "$volume"` + action "$string" mount "$volume" + done + + touch "$LOCKFILE" } stop() { - [ ! -f $LOCKFILE ] && return 3 + if [ ! -f "$LOCKFILE" ] ; then return 0 ; fi - action $"Unmounting ZFS filesystems: " $ZFS umount -a + # 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 + } - rm -f $LOCKFILE -} - -status() -{ - [ ! -f $LOCKFILE ] && return 3 - - $ZPOOL status && echo && $ZPOOL list + # 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 @@ -99,21 +223,24 @@ case "$1" in RETVAL=$? ;; status) - status - RETVAL=$? + lsmod | grep -q zfs || RETVAL=3 + $ZPOOL status && echo && $ZFS list || { + [ -f "$LOCKFILE" ] && RETVAL=2 || RETVAL=4 + } ;; restart) stop start ;; condrestart) - if [ -f $LOCKFILE ]; then + if [ -f "$LOCKFILE" ] ; then stop start fi ;; *) echo $"Usage: $0 {start|stop|status|restart|condrestart}" + RETVAL=3 ;; esac