Il 12/12/2012 14:50, Stefan Hajnoczi ha scritto: > VirtIOBlock->rq can trigger the assertion. > > IIUC hw/virtio-blk.c may handle I/O errors by keeping the request > pending and on a list (->rq). This allows the user to restart them > after, for example, adding more space to the host file system containing > the disk image file. > > We keep a list of failed requests and we migrate this list. So I think > inuse != 0 when migrating with pending failed I/O requests.
Same for virtio-scsi. Each request in that case is sent as part of the SCSIDevice that it refers to, via callbacks in SCSIBusInfo. Paolo
