[PATCH v2 07/13] rpc: finish all threads before exiting main loop

[Daniel P. Berrangé]

On Thu, Jul 23, 2020 at 01:14:07PM +0300, Nikolay Shirokovskiy wrote:
> Currently we have issues like [1] on libvirtd shutdown as we cleanup while RPC
> and other threads are still running. Let's finish all threads other then main
> before cleanup.
> 
> The approach to finish threads is suggested in [2]. In order to finish RPC
> threads serving API calls we let the event loop run but stop accepting new API
> calls and block processing any pending API calls. We also inform all drivers of
> shutdown so they can prepare for shutdown too. Then we wait for all RPC threads
> and driver's background thread to finish. If finishing takes more then 15s we
> just exit as we can't safely cleanup in time.
> 
> [1] https://bugzilla.redhat.com/show_bug.cgi?id=1828207
> [2] https://www.redhat.com/archives/libvir-list/2020-April/msg01328.html
> 
> Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy at virtuozzo.com>
> Reviewed-by: Daniel Henrique Barboza <danielhb413 at gmail.com>
> ---
>  src/remote/remote_daemon.c |  6 ++--
>  src/rpc/virnetdaemon.c     | 81 +++++++++++++++++++++++++++++++++++++++++++++-
>  2 files changed, 83 insertions(+), 4 deletions(-)

Reviewed-by: Daniel P. Berrangé <berrange at redhat.com>


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 :|