Classify severity of I/O errors for target, nexus, and
transport errors.
Signed-off-by: NMike Snitzer <snitzer@redhat.com>
Signed-off-by: NHannes Reinecke <hare@suse.de>
Acked-by: NJens Axboe <jaxboe@fusionio.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>