On 10/20/2013 08:52 PM, Max Reitz wrote: > Saving the VM state is done using bdrv_pwrite. This function may perform > a read-modify-write, which in this case results in data being read from > beyond the end of the virtual disk. Since we are actually trying to > access an area which is not a part of the virtual disk, zero_beyond_eof > has to be set to false before performing the partial write, otherwise > the VM state may become corrupted. > > Signed-off-by: Max Reitz <mre...@redhat.com> > --- > Follow-up to (depends on): > - qcow2: Restore total_sectors value in save_vmstate
Reviewed-by: Eric Blake <ebl...@redhat.com> Do you have test cases that demonstrate the corruption pre-patch? -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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