[libvirt] [PATCH] rpc: wait longer for session daemon to start up

[Richard W.M. Jones]

On Tue, Mar 15, 2016 at 05:10:48PM -0400, Cole Robinson wrote:
> https://bugzilla.redhat.com/show_bug.cgi?id=1271183
> 
> We only wait .5 seconds for the session daemon to start up and present
> its socket, which isn't sufficient for many users. Bump up the sleep
> interval and retry amount so we wait for a total of 5 seconds.

A longer delay is surely better, so ACK from me.

> danpb suggests dropping the reverting this:
> 
> commit be78814ae07f092d9c4e71fd82dd1947aba2f029
> Author: Michal Privoznik <mprivozn at redhat.com>
> Date:   Thu Apr 2 14:41:17 2015 +0200
> 
>     virNetSocketNewConnectUNIX: Use flocks when spawning a daemon

This commit references:

  https://bugzilla.redhat.com/show_bug.cgi?id=1200149

The test for that bug is very simple, just run the following command
as *NON* root:

  killall libvirtd ; for i in `seq 1 5`; do virsh list >/tmp/log$i 2>&1 & done

If some of the virsh instances fail, then you've hit the bug.

Commit be78814a did appear to fix that.  Whether that was coincidental
or not, I don't know, but please don't reintroduce that bug,
particularly as it is so simple to test for.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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