[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] HVM domain with write caching going on somewhere to disk
> > Hmmm... shouldn't the DomU->qemu->device and DomU->blkbackend->device > > path's both have visibility to the same buffer cache though? > > No, it's trickier than that. Blkback sends I/O requests direct into the > block subsystem, bypassing the buffer cache. You can see there's potential > for confusion therefore! Ah yes. That would probably do it. So I need to make sure that the buffer cache is flushed (eg async writes in qemu?)... or maybe get qemu to talk direct to the block subsystem in the same way... any suggestions? I've already butchered ioemu to get this working so far (changed the PCI ID's of the IDE interface so Windows won't detect it) so I'm not afraid of doing more of it :) Thanks James _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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