[libvirt] [PATCH] qemu: report useful error failling to destroy domain gracefully
Guan Nan Ren
gren at redhat.com
Fri May 17 14:35:26 UTC 2013
Yes, it belongs to system related error rather than libvirt
operation related.
----- Original Message -----
From: "Daniel P. Berrange" <berrange at redhat.com>
To: "Guannan Ren" <gren at redhat.com>
Cc: libvir-list at redhat.com
Sent: Friday, May 17, 2013 6:14:56 PM
Subject: Re: [libvirt] [PATCH] qemu: report useful error failling to destroy domain gracefully
On Fri, May 17, 2013 at 05:32:06PM +0800, Guannan Ren wrote:
> Resolves:https://bugzilla.redhat.com/show_bug.cgi?id=927620
>
> #kill -STOP `pidof qemu-kvm`
> #virsh destroy $guest --graceful
> error: Failed to destroy domain testVM
> error: An error occurred, but the cause is unknown
>
> With --graceful, SIGTERM always is emitted to kill driver
> process, but it won't success till burning out waiting time
> in case of process being stopped.
> But domain destroy without --graceful can work, SIGKILL will
> be emitted to the stopped process after 10 secs which always
> kills a process even one that is currently stopped.
> So report an error after burning out waiting time in this case.
> ---
>
> - VIR_DEBUG("Timed out waiting after SIGKILL to process %lld",
> - (long long)pid);
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("Failed to terminate process %lld with SIG%s"),
> + (long long)pid, signame);
OPERATION_INVALID isn't really appropriate for this. I'd raise a
system error, using errno==EBUSY to indicate that it needs to
be re-tried to kill the process
Daniel
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