Rom Freiman
2014-Jan-21 13:34 UTC
Re: [Libguestfs] Double fault panic in L2 upon v2v conversion
Hi, We all agree that it's not specific to virt-v2v. I managed to reproduce the same double fault on "normal" L2 boot - without libguestfs interference. And as Paolo wrote already, he will take a look at it. Thanks, Rom On Tue, Jan 21, 2014 at 3:05 PM, Richard W.M. Jones <rjones@redhat.com>wrote:> On Tue, Jan 21, 2014 at 04:38:30PM +0100, Kashyap Chamarthy wrote: > > On 01/17/2014 04:06 PM, Rom Freiman wrote: > > > Kashyap, just to be sure - it happens to you during the v2v > > > conversion? on L2? > > > > I haven't done any v2v conversions in L2 (or at any other level). > > I'm highly doubtful this problem is specific to virt-v2v. virt-v2v > might trigger it in some circumstances, but it seems to be a broader > problem that could affect any libguestfs instance running in L2, or > indeed any *VM*. > > Rich. > > -- > Richard Jones, Virtualization Group, Red Hat > http://people.redhat.com/~rjones > virt-top is 'top' for virtual machines. Tiny program with many > powerful monitoring features, net stats, disk stats, logging, etc. > http://people.redhat.com/~rjones/virt-top >
Rom Freiman
2014-Jan-31 14:02 UTC
Re: [Libguestfs] Double fault panic in L2 upon v2v conversion
Hey everybody, Any news about the topic? I could not find anything relevant yet. Thanks, Rom On Tue, Jan 21, 2014 at 3:34 PM, Rom Freiman <rom@stratoscale.com> wrote:> Hi, > > We all agree that it's not specific to virt-v2v. > > I managed to reproduce the same double fault on "normal" L2 boot - without > libguestfs interference. > And as Paolo wrote already, he will take a look at it. > > Thanks, > Rom > > > On Tue, Jan 21, 2014 at 3:05 PM, Richard W.M. Jones <rjones@redhat.com>wrote: > >> On Tue, Jan 21, 2014 at 04:38:30PM +0100, Kashyap Chamarthy wrote: >> > On 01/17/2014 04:06 PM, Rom Freiman wrote: >> > > Kashyap, just to be sure - it happens to you during the v2v >> > > conversion? on L2? >> > >> > I haven't done any v2v conversions in L2 (or at any other level). >> >> I'm highly doubtful this problem is specific to virt-v2v. virt-v2v >> might trigger it in some circumstances, but it seems to be a broader >> problem that could affect any libguestfs instance running in L2, or >> indeed any *VM*. >> >> Rich. >> >> -- >> Richard Jones, Virtualization Group, Red Hat >> http://people.redhat.com/~rjones >> virt-top is 'top' for virtual machines. Tiny program with many >> powerful monitoring features, net stats, disk stats, logging, etc. >> http://people.redhat.com/~rjones/virt-top >> > >
Kashyap Chamarthy
2014-Jan-31 14:10 UTC
Re: [Libguestfs] Double fault panic in L2 upon v2v conversion
On 01/31/2014 07:32 PM, Rom Freiman wrote:> Hey everybody, > Any news about the topic? I could not find anything relevant yet.Most developers are travelling and busy with a couple of conferences. You may not get a quick response. If you're still finding issues with v2v conversions with latest builds (and upstream git); please file a bug with as much clear details as possible. /kashyap> > Thanks, > Rom > > > On Tue, Jan 21, 2014 at 3:34 PM, Rom Freiman <rom@stratoscale.com> wrote: > >> Hi, >> >> We all agree that it's not specific to virt-v2v. >> >> I managed to reproduce the same double fault on "normal" L2 boot - without >> libguestfs interference. >> And as Paolo wrote already, he will take a look at it. >> >> Thanks, >> Rom >> >> >> On Tue, Jan 21, 2014 at 3:05 PM, Richard W.M. Jones <rjones@redhat.com>wrote: >> >>> On Tue, Jan 21, 2014 at 04:38:30PM +0100, Kashyap Chamarthy wrote: >>>> On 01/17/2014 04:06 PM, Rom Freiman wrote: >>>>> Kashyap, just to be sure - it happens to you during the v2v >>>>> conversion? on L2? >>>> >>>> I haven't done any v2v conversions in L2 (or at any other level). >>> >>> I'm highly doubtful this problem is specific to virt-v2v. virt-v2v >>> might trigger it in some circumstances, but it seems to be a broader >>> problem that could affect any libguestfs instance running in L2, or >>> indeed any *VM*. >>> >>> Rich. >>> >>> -- >>> Richard Jones, Virtualization Group, Red Hat >>> http://people.redhat.com/~rjones >>> virt-top is 'top' for virtual machines. Tiny program with many >>> powerful monitoring features, net stats, disk stats, logging, etc. >>> http://people.redhat.com/~rjones/virt-top >>> >> >> >-- /kashyap
Richard W.M. Jones
2014-Jan-31 14:17 UTC
Re: [Libguestfs] Double fault panic in L2 upon v2v conversion
On Fri, Jan 31, 2014 at 04:02:03PM +0200, Rom Freiman wrote:> Hey everybody, > Any news about the topic? I could not find anything relevant yet.Don't know about the kernel bug, but in (very very) recent versions of libguestfs it is now possible to force TCG by doing: export LIBGUESTFS_BACKEND_SETTINGS=force_tcg which should work around this bug. See: http://libguestfs.org/guestfs.3.html#backend-settings https://github.com/libguestfs/libguestfs/commit/26f7fb237b713c798e23a336a3c4973513f83551 https://github.com/libguestfs/libguestfs/commit/11ac9f702440fff5c8dad1f9756f24ca6867712c Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://people.redhat.com/~rjones/virt-top