In current implementation, we still use IGIF as the ROOT FID,
but ZFS does not have IGIF at all, so it will move root ROOT fid
to a new sequence.
But for compatible with clients, which are being mounted
during upgrade, it will still keep the old IGIF root FID.
Signed-off-by: Wang Di <di.wang@intel.com>
Change-Id: I2e6b81cd359436d2e5b96c8a315a56c415f8e631
Reviewed-on: http://review.whamcloud.com/5257
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Reviewed-by: Mike Pershin <mike.pershin@intel.com>