Am 02.07.2014 um 10:23 hat Paolo Bonzini geschrieben: > Il 02/07/2014 08:55, Markus Armbruster ha scritto: > >>> I think this fixes itself automatically if you use > >>> rerror=stop/werror=stop on block jobs. At least that was part of the > >>> design, whether the implementation gets it right I cannot say without > >>> looking at the code more carefully. > >What if an underlying device doesn't support [rw]error=stop? Not all > >do... > > Then the "fix" is to add support to the underlying device. IDE, > SCSI and virtio-blk (plus virtio-scsi via SCSI of course) are > covered; the main one that's left out is SD.
Isn't block job rerror/werror completely independent from the guest device using the same BDS? They are different users, so if we somehow coupled them, that would be a design problem (which I think we were careful enough to avoid). Kevin
