contrib/dracut/90zfs/parse-zfs.sh.in

   1 #!/bin/sh
   2 # shellcheck disable=SC2034,SC2154
   3
   4 . /lib/dracut-lib.sh
   5
   6 # Let the command line override our host id.
   7 spl_hostid=$(getarg spl_hostid=)
   8 if [ -n "${spl_hostid}" ] ; then
   9         info "ZFS: Using hostid from command line: ${spl_hostid}"
  10         zgenhostid -f "${spl_hostid}"
  11 elif [ -f "/etc/hostid" ] ; then
  12         info "ZFS: Using hostid from /etc/hostid: $(hostid)"
  13 else
  14         warn "ZFS: No hostid found on kernel command line or /etc/hostid."
  15         warn "ZFS: Pools may not import correctly."
  16 fi
  17
  18 wait_for_zfs=0
  19 case "${root}" in
  20         ""|zfs|zfs:)
  21                 # We'll take root unset, root=zfs, or root=zfs:
  22                 # No root set, so we want to read the bootfs attribute.  We
  23                 # can't do that until udev settles so we'll set dummy values
  24                 # and hope for the best later on.
  25                 root="zfs:AUTO"
  26                 rootok=1
  27                 wait_for_zfs=1
  28
  29                 info "ZFS: Enabling autodetection of bootfs after udev settles."
  30                 ;;
  31
  32         ZFS=*|zfs:*)
  33                 # root is explicit ZFS root.  Parse it now.  We can handle
  34                 # a root=... param in any of the following formats:
  35                 # root=ZFS=rpool/ROOT
  36                 # root=zfs:rpool/ROOT
  37                 # root=ZFS=pool+with+space/ROOT+WITH+SPACE (translates to root=ZFS=pool with space/ROOT WITH SPACE)
  38
  39                 # Strip down to just the pool/fs
  40                 root="${root#zfs:}"
  41                 root="zfs:${root#ZFS=}"
  42                 # switch + with spaces because kernel cmdline does not allow us to quote parameters
  43                 root=$(echo "$root" | tr '+' ' ')
  44                 rootok=1
  45                 wait_for_zfs=1
  46
  47                 info "ZFS: Set ${root} as bootfs."
  48                 ;;
  49
  50         *)
  51                 info "ZFS: no ZFS-on-root"
  52 esac
  53
  54 # Make sure Dracut is happy that we have a root and will wait for ZFS
  55 # modules to settle before mounting.
  56 if [ "${wait_for_zfs}" -eq 1 ]; then
  57         ln -s /dev/null /dev/root 2>/dev/null
  58         initqueuedir="${hookdir}/initqueue/finished"
  59         echo '[ -e /dev/zfs ]' > "${initqueuedir}/zfs.sh"
  60 fi