[libvirt] [PATCH 10/10] Add a plugin for the 'sanlock' project

[Daniel P. Berrange]

On Fri, May 20, 2011 at 03:11:35PM -0500, Doug Goldstein wrote:
> On Thu, May 19, 2011 at 6:24 AM, Daniel P. Berrange <berrange at redhat.com> wrote:
> > Sanlock is a project that implements a disk-paxos locking
> > algorithm. This is suitable for cluster deployments with
> > shared storage.
> >
> > * src/Makefile.am: Add dlopen plugin for sanlock
> > * src/locking/lock_driver_sanlock.c: Sanlock driver
> > ---
> >  libvirt.spec.in                   |   11 +
> >  po/POTFILES.in                    |    1 +
> >  src/Makefile.am                   |   12 +
> >  src/libvirt_private.syms          |    1 +
> >  src/locking/lock_driver_sanlock.c |  413 +++++++++++++++++++++++++++++++++++++
> >  5 files changed, 438 insertions(+), 0 deletions(-)
> >  create mode 100644 src/locking/lock_driver_sanlock.c
> >
> 
> <snip>
> 
> Daniel,
> 
> How does the dependency magic for sanlock work here? It appears that
> there will be an automagical dependency on libsanlock when its
> installed. It might be a good idea to provide a ./configure script
> knob to enable/disable this piece.

That was waiting for sanlock to provide a pkgconfig file...

> Additionally, I see you've added virAllocVar to the syms list but I
> don't see it used anywhere else in the context of this patch. Not sure
> if I'm missing something.

It is used in sanlock.c:

+    if (VIR_ALLOC_VAR(res, struct sanlk_disk, 1) < 0) {
+        virReportOOMError();
+        return -1;
+    }

Daniel
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