On Wed, 08/14 13:03, Alex Bligh wrote: > > On 14 Aug 2013, at 12:52, Fam Zheng wrote: > > > Yes, this one sounds good to have. VMDK and VHDX have this kind of > > backing file status validation. > > ... though I'd prefer something safer than looking at mtime, for > instance a sequence number that is incremented prior to any > bdrv_close if a write has been done since bdrv_open. > It should be incremented prior to any write for each r/w open, in case program crashes after write but before close.
Fam
