ping 18.09.2018 13:37, Vladimir Sementsov-Ogievskiy wrote: > 17.09.2018 21:33, John Snow wrote: >> >> On 09/17/2018 11:51 AM, Vladimir Sementsov-Ogievskiy wrote: >>> Hmm, ping, anybody here ?) >>> >> Was preparing to stage on Friday, working on it now. >> >> I never understood why you forbid the transfer of read only bitmaps >> though, can you point that out for me? >> >> --js > > readonly bitmap - means it is not marked in_use in qcow2 file. > > Hm, I don't remember exact reason, but at least for shared migration > it is unsafe to migrate readonly bitmap without special handling: we > migrate it, it becomes not-readonly, it changes in RAM, then (assume) > storing failed and we have old version ofthe bitmap in qcow2, which is > not marked in_use.. So it should be somehow carefully handled, the > simplest option is just to forbid it. >
-- Best regards, Vladimir
