Re: [OSSTEST Nested PATCH v7 4/6] Add new script to custmize nested test configuration

[Ian Campbell <ian.campbell@citrix.com>]

On Wed, 2015-04-01 at 08:45 +0000, Pang, LongtaoX wrote:
> > As it happens I was rebasing that series this morning but due to other issues
> > I've not managed to run it yet. Once I've managed to at least smoke test I'll CC
> > you on the repost.
> > 
> OK. What's more, for the below codes which is used for starting
> 'osstest-confirm-booted' script to confirm whether L1 is fully booted
> after reboot it. I think it's necessary here.

>  +target_cmd_root($l1, <<END);
>  +    wget -O overlay.tar $url
>  +    tar -xf overlay.tar -C /
>  +    rm overlay.tar -f
>  +    update-rc.d osstest-confirm-booted start 99 2 .
> +END

In my distro series I also have some patches refactoring the overlay
stuff, which would mean you could reuse that.
http://article.gmane.org/gmane.comp.emulators.xen.devel/224433
I'll CC you on that one too.

I don't think there would be any harm in adding those overlays for all
guests and enabling the initscript, but Ian may disagree or know
something which I don't.


> > > +my $l2_disk_mb = 20000;
> > > +my $l2_lv_name = 'nestedl2';
> > > +my $vgname = $l0->{Name};
> > > +$vgname .= ".$c{TestHostDomain}" if ($l0->{Suite} =~ m/lenny/);
> > > +target_cmd_root($l0, <<END);
> > > +    lvremove -f /dev/${vgname}/${l2_lv_name} ||:
> > > +    lvcreate -L ${l2_disk_mb}M -n $l2_lv_name $vgname
> > > +    dd if=/dev/zero of=/dev/${vgname}/${l2_lv_name} count=10
> > > +    xl block-attach $l1->{Name}
> > > +/dev/${vgname}/${l2_lv_name},raw,sdb,rw
> > 
> > This attach won't be persistent over domain destroy, is that expected?
> > 
> We need create a logical volume in L0 and attach it to L1 for L2 VM
> installing. Before creating, it will remove the logical volume with
> the same "$l2_lv_name" that has already existed. 
> Yes, after destroyed L1 VM, the logical volume will still exist inside
> L0, but there is no harm, I think.

OK.

Ian./