libvirt users - Aug 2017 - libvirt: XML-RPC error : Cannot write data: Broken pipe

Hi all, 
I think it's a bug, when call virDomainGetState after "service libvirtd
stop", I receive signal SIGPIPE.
I want to know how to avoid this problem? And Other interfaces will also
encounter this problem？
Below the bt information:
Below some information about my hypervisor:
root@ubuntu-05:/datapool/zhuohf# virsh -v
3.4.0
root@ubuntu-05:/datapool/zhuohf# qemu-x86_64 -version
qemu-x86_64 version 2.9.0
Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers

On Wed, Aug 09, 2017 at 11:53:54AM +0800, netsurfed
wrote:
> Hi all, 
> I think it's a bug, when call virDomainGetState after "service
libvirtd stop"
> , I receive signal SIGPIPE.
For the QEMU driver, the libvirt library just talks to libvirtd over an
RPC layer. You killed libvirtd, so the libvirt library gets SIGPIPE.
> I want to know how to avoid this problem? And Other interfaces will also
If you want libvirt to work, don't stop libvirtd

Regards,
Daniel
-- 
|: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org         -o-            https://fstop138.berrange.com :|
|: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|

The error message could however give a hint what is going on. It should sax
that it is impossible to talk to libvirtd and that it might be stopped.

On 9 Aug 2017 2:19 p.m., "Daniel P. Berrange"
<berrange@redhat.com> wrote:
> On Wed, Aug 09, 2017 at 11:53:54AM +0800, netsurfed wrote:
> > Hi all,
> > I think it's a bug, when call virDomainGetState after
"service libvirtd
> stop"
> > , I receive signal SIGPIPE.
>
> For the QEMU driver, the libvirt library just talks to libvirtd over an
> RPC layer. You killed libvirtd, so the libvirt library gets SIGPIPE.
>
> > I want to know how to avoid this problem? And Other interfaces will
also
>
> If you want libvirt to work, don't stop libvirtd
>
> Regards,
> Daniel
> --
> |: https://berrange.com      -o-    https://www.flickr.com/photos/
> dberrange :|
> |: https://libvirt.org         -o-
> https://fstop138.berrange.com :|
> |: https://entangle-photo.org    -o-    https://www.instagram.com/
> dberrange :|
>
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