dracut/90zfs/mount-zfs.sh

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