On Wed, Mar 11, 2015 at 01:28:13PM +0300, Denis V. Lunev wrote: > The software driver must set inuse field in Parallels header to > 0x746F6E59 when the image is opened in read-write mode. The presence of > this magic in the header on open forces image consistency check. > > There is an unfortunate trick here. We can not check for inuse in > parallels_check as this will happen too late. It is possible to do > that for simple check, but during the fix this would always report > an error as the image was opened in BDRV_O_RDWR mode. Thus we save > the flag in BDRVParallelsState for this. > > On the other hand, nothing should be done to clear inuse in > parallels_check. Generic close will do the job right. > > Signed-off-by: Denis V. Lunev <d...@openvz.org> > Reviewed-by: Roman Kagan <rka...@parallels.com> > CC: Kevin Wolf <kw...@redhat.com> > CC: Stefan Hajnoczi <stefa...@redhat.com> > --- > block/parallels.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 50 insertions(+)
Reviewed-by: Stefan Hajnoczi <stefa...@redhat.com>
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