dracut/90zfs/mount-zfs.sh

   1 #!/bin/sh
   2
   3 . /lib/dracut-lib.sh
   4
   5 ZPOOL_FORCE=""
   6 if getargbool 0 zfs_force -y zfs.force -y zfsforce ; then
   7         warn "ZFS: Will force-import pools if necessary."
   8         ZPOOL_FORCE="-f"
   9 fi
  10
  11 case "$root" in
  12         zfs:*)
  13                 # We have ZFS modules loaded, so we're able to import pools now.
  14                 if [ "$root" = "zfs:AUTO" ] ; then
  15                         # Need to parse bootfs attribute
  16                         info "ZFS: Attempting to detect root from imported ZFS pools."
  17
  18                         # Might be imported by the kernel module, so try searching before
  19                         # we import anything.
  20                         zfsbootfs=`zpool list -H -o bootfs | sed 'q'`
  21                         if [ "$zfsbootfs" = "" ] ; then
  22                                 # Not there, so we need to import everything.
  23                                 info "ZFS: Attempting to import additional pools."
  24                                 zpool import -N -a ${ZPOOL_FORCE}
  25                                 zfsbootfs=`zpool list -H -o bootfs | sed 'q'`
  26                                 if [ "$zfsbootfs" = "" ] ; then
  27                                         rootok=0
  28                                         pool=""
  29
  30                                         warn "ZFS: No bootfs attribute found in importable pools."
  31
  32                                         # Re-export everything since we're not prepared to take
  33                                         # responsibility for them.
  34                                         zpool list -H | while read fs rest ; do
  35                                                 zpool export "$fs"
  36                                         done
  37
  38                                         return 1
  39                                 fi
  40                         fi
  41                         info "ZFS: Using ${zfsbootfs} as root."
  42                 else
  43                         # Should have an explicit pool set, so just import it and we're done.
  44                         zfsbootfs="${root#zfs:}"
  45                         pool="${zfsbootfs%%/*}"
  46                         if ! zpool list -H $pool > /dev/null ; then
  47                                 # pool wasn't imported automatically by the kernel module, so
  48                                 # try it manually.
  49                                 info "ZFS: Importing pool ${pool}..."
  50                                 if ! zpool import -N ${ZPOOL_FORCE} $pool ; then
  51                                         warn "ZFS: Unable to import pool ${pool}."
  52                                         rootok=0
  53
  54                                         return 1
  55                                 fi
  56                         fi
  57                 fi
  58
  59                 # Above should have left our rpool imported and pool/dataset in $root.
  60                 # We need zfsutil for non-legacy mounts and not for legacy mounts.
  61                 mountpoint=`zfs get -H -o value mountpoint $zfsbootfs`
  62                 if [ "$mountpoint" = "legacy" ] ; then
  63                         mount -t zfs "$zfsbootfs" "$NEWROOT" && ROOTFS_MOUNTED=yes
  64                 else
  65                         mount -o zfsutil -t zfs "$zfsbootfs" "$NEWROOT" && ROOTFS_MOUNTED=yes
  66                 fi
  67                 ;;
  68 esac