Re: [Xen-devel] [PATCH 08/19] libxc: suspend: Fix suspend event channel locking

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Shriram Rajagopalan writes ("Re: [PATCH 08/19] libxc: suspend: Fix suspend 
event channel locking"):
> On Tue, Mar 4, 2014 at 6:56 AM, Ian Jackson <ian.jackson@xxxxxxxxxxxxx> wrote:
> 
>     Use fcntl F_SETLK, rather than writing our pid into a "lock" file.
>     That way if we crash we don't leave the lockfile lying about.  Callers
>     now need to keep the fd for our lockfile.  (We don't use flock because
>     we don't want anyone who inherits this fd across fork to end up with a
>     handle onto the lock.)
...
> Acked-by: Shriram Rajagopalan <rshriram@xxxxxxxxx> 

Thanks.

> Slightly off-track:
>   If you got a chance to test this patch, were you able to live migrate more
> than one 
> domain simultaneously? I don't see any reason why it shouldn't be possible
> but I sort of vaguely remember some bug fix in the past, where we couldn't 
> start more than one live migration at the same time

I will test that.

Thanks,
Ian.

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