[libvirt] [PATCH v2 2/2] qemuDomainUndefineFlags: Forbid undefine of active domain with NVRAM

Daniel P. Berrange berrange at redhat.com
Wed Aug 9 12:14:59 UTC 2017

On Wed, Aug 09, 2017 at 02:00:06PM +0200, Michal Privoznik wrote:
> https://bugzilla.redhat.com/show_bug.cgi?id=1467245
> Currently, there's a bug when undefining a domain with NVRAM
> store. Basically, the unlink() of the NVRAM store file happens
> during the undefine procedure iff domain is inactive. So, if
> domain is running and undefine is called the file is left behind.
> It won't be removed in the domain cleanup process either
> (qemuProcessStop). To avoid this forbid undefining domain with
> NVRAM file.

Why do we need to forbid it ? Even if QEMU still has an open
file handle, it can continue to write to it after we unlink

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