On 09/12/2014 19:15, Dr. David Alan Gilbert (git) wrote:
> (With the previous atapi_dma flag recovery)
> If migration happens between the ATAPI command being written and the
> bmdma being started, the DMA is dropped.  Eventually the guest times
> out and recovers, but that can take many seconds.
> (This is rare, on a pingpong reading the CD continuously I hit
> this about ~1/30-1/50 migrates)
> 
> I don't think we've got enough state to be able to recover safely
> at this point, so I throw a 'medium error, no seek complete'
> that I'm assuming guests will try and recover from an apparently
> dirty CD.

What is the part of the state that is not being migrated?  Also, what is
the ATAPI command that is being run?

Paolo


Reply via email to