[libvirt] [Xen-devel] [PATCH 0/5] Testing libvirt XML -> libxl_domain_config conversion
Ian Campbell
Ian.Campbell at citrix.com
Mon Jun 2 12:57:55 UTC 2014
create !
title it libxl_ctx_alloc should have dummy mode which does not require a Xen host
severity it wishlist
thanks
(just creating a bug for this issue)
On Mon, 2014-06-02 at 13:41 +0100, Ian Campbell wrote:
> On Fri, 2014-05-30 at 18:24 +0100, Daniel P. Berrange wrote:
> > I hit a couple of small issues with libxl, which I worked around, when
> > writing this test which I why I'm copying xen-devel
> >
> > - libxl_ctx_alloc() will call xs_daemon_open and xc_interface_open,
> > and stat /var/run/xenstored.pid to see if Xen is actually running.
> > This fails when run on non-Xen hosts (and also possibly if run
> > unprivileged).
> >
> > I used an evil LD_PRELOAD hack to stub out xs_daemon_open and
> > xc_interface_open to return (void*)0x1, and also turn
> > xc_interface_close and xs_daemon_close to no-ops, and make
> > stat() always return success for xenstored.pid.
> >
> > This works (evidenced by the fact that if something was needing
> > these xs/xc handles they would have crashed referencing 0x1),
> > but at the same time it might be an idea to have an officially
> > supported "non live" mode for libxl_ctx_alloc() turned on by a
> > flag of some sort.
>
> Yes, we absolutely should have this.
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