Re: [Xen-devel] [OSSTEST PATCH 3/4] Add nested testcase of installing L2 guest VM

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Tue, Jan 06, 2015 at 03:28:43AM +0000, Pang, LongtaoX wrote:
> 
> 
> > -----Original Message-----
> > From: Wei Liu [mailto:wei.liu2@xxxxxxxxxx]
> > Sent: Thursday, December 11, 2014 7:44 PM
> > To: Pang, LongtaoX
> > Cc: xen-devel@xxxxxxxxxxxxx; Ian.Jackson@xxxxxxxxxxxxx;
> > Ian.Campbell@xxxxxxxxxx; wei.liu2@xxxxxxxxxx; Hu, Robert; Zheng, Di
> > Subject: Re: [OSSTEST PATCH 3/4] Add nested testcase of installing L2 guest 
> > VM
> > 
> > On Wed, Dec 10, 2014 at 04:07:39PM +0800, longtao.pang wrote:
> > > From: "longtao.pang" <longtaox.pang@xxxxxxxxx>
> > >
> > > This patch is used for installing L2 guest VM inside L1 guest VM.
> > >
> > > ---
> > >  sg-run-job        |    2 +
> > >  ts-debian-install |  166
> > > +++++++++++++++++++++++++++++++++++++++++------------
> > >  2 files changed, 132 insertions(+), 36 deletions(-)
> > >
> > > diff --git a/sg-run-job b/sg-run-job
> > > index e513bd1..85f7b22 100755
> > > --- a/sg-run-job
> > > +++ b/sg-run-job
> > > @@ -292,6 +292,8 @@ proc need-hosts/test-nested {} {return host}  proc
> > > run-job/test-nested {} {
> > >      run-ts . = ts-debian-hvm-install + host + nested + nested_L1
> > >      run-ts . = ts-xen-install + host + nested + nested_build
> > > +    run-ts . = ts-debian-install + host + nested + amd64 + nested_L2
> > > +    run-ts . = ts-guest-destroy + host nested
> > 
> > It would also be possible to run ts-debian-hvm-install as L2. That would 
> > suite
> > this test case better -- it's testing nested HVM.
> > 
> > There's no need to remove the PV test case though.
> 
> [Pang, LongtaoX] 
> [Pang, LongtaoX] Thanks for checking. We used ts-debian-hvm-install for 
> installing L1 HVM guest via ISO Image, 
> because we will build XEN, XEN-Tools and dom0 kernel inside it, and then we 
> will install L2 guest inside L1. 
> But, L2 guest is just a native OS, so we think use ts-debian-install is 
> enough for installing L2 and will make it easy to control.
> 

ts-debian-install installs a L2 PV guest, which should work even without
nested HVM enabled for your L1 HVM guest. You're testing nested HVM I
think it makes more sense to install a L2 HVM guest.

[...]
> > > +sub start () {
> > > +    my $cfg_xend= "/etc/xen/$guesthost.cfg";
> > > +    my $cmd= toolstack()->{Command}." create ".$cfg_xend;
> > > +    target_cmd_root($ho, $cmd, 30);
> > > +    my $domains = target_cmd_output_root($ho,
> > toolstack()->{Command}." list");
> > > +    logm("guest state is\n$domains"); }
> > 
> > I think we already have a guest start script?
> > 
> > This hunk is going to break easily if we're more flexible about the 
> > toolstack (we
> > already have a partially working libvirt test case).
> >
> 
> [Pang, LongtaoX] Thanks for checking, I have tried to use ts-guest-start to 
> start guest, but it maybe not suit for here, 
> because some function and parameters in the script is not necessary here, If 
> we use the script we will modify it again and may impact other test jobs. 
> So I create a function here to start L2 guest.
>  

Then you need to keep an eye on the ongoing work from Ian Campbell to
factor out abstraction layer of toolstack and rebase accordingly.

Wei.

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