VMDK extent parsing code doesn't handle the JSON file name, so the case
fails for these subformats. Disabled them.
Signed-off-by: NFam Zheng <famz@redhat.com>
Message-id: 1417571370-19495-1-git-send-email-famz@redhat.com
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>