|Subject:||Re: [Qemu-devel] qcow2 - safe on kill? safe on power fail?|
|Date:||Mon, 21 Jul 2008 15:22:26 -0700|
|User-agent:||Thunderbird 184.108.40.206 (X11/20080505)|
Anthony Liguori wrote:
Andreas Schwab wrote:Anthony Liguori <address@hidden> writes:The only ways that you can cause corruption is if the QCOW2 sector allocation code is faulty (and you would be screwed no matter what here) or if you issue a SIGTERM/SIGKILL that interrupts the code while it's allocating a new sector.Blocking SIGTERM until the allocation is finished could close that hole.Seems like a band-aid to me as SIGKILL is still an issue. Plus it would involve modifying all disk formats, not just QCOW2. I'd rather see proper journal support added to QCOW2 myself.
Well, SIGKILL is a bit more of an extreme case. SIGTERM seems like a reasonable way to trigger a graceful shutdown (at least, I know I assumed it did for a long time, whereas I'd never assume SIGKILL was graceful).
|[Prev in Thread]||Current Thread||[Next in Thread]|