Re: AW: [Xen-users] Reverse migration breaks/freezes VM

[Thomas Halinka <lists@xxxxxxxxx>]

Am Freitag, den 06.03.2009, 09:07 +0100 schrieb Rustedt, Florian:
> No, just paras.
> Could  that help?

nope - try other kernel than 2.6.27...

Use 2.6.26 or 2.6.28 instead and it should work. We have some
kernel-gurus here and they will tell you the same.

Regards,

Thomas
> 
> Florian
> 
> > -----UrsprÃngliche Nachricht-----
> > Von: James Harper [mailto:james.harper@xxxxxxxxxxxxxxxx] 
> > Gesendet: Freitag, 6. MÃrz 2009 00:57
> > An: Rustedt, Florian; xen-users@xxxxxxxxxxxxxxxxxxx
> > Betreff: RE: [Xen-users] Reverse migration breaks/freezes VM
> > 
> > Are they HVM domains?
> > 
> > James
> > 
> > > -----Original Message-----
> > > From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users- 
> > > bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Rustedt, Florian
> > > Sent: Friday, 6 March 2009 00:13
> > > To: xen-users@xxxxxxxxxxxxxxxxxxx
> > > Subject: [Xen-users] Reverse migration breaks/freezes VM
> > > 
> > > Hello list,
> > > 
> > > I've got strange phenomenons with migrations. I think it's 
> > a bug, but
> > am
> > > not sure, so i am asking for your help to find this ou, please ;)
> > > 
> > > First the construct:
> > > Two HP DL180G5(xen0,xen1) with dual-quadcore each, 8G RAM.
> > > 
> > > On each a dom0 with selfcompiled(because of network drivers) gentoo-
> > > sources-xen-2.6.27_amd64 and Xen 3.3.0. The installation is 
> > completely
> > the
> > > same (rsynct), only different in ip and hostname.
> > > 
> > > Both share a drbd0(v8.3.0) device. On it an lvm with one lv per vm.
> > > 
> > > Now what's the problem:
> > > 
> > > If i migrate a running vm(mx1-smartnet-de) from xen0 to 
> > xen1, it seems
> > to
> > > work.
> > > I could do a "xm migrate mx1-smartnet-de xen1" without any 
> > interuption 
> > > while having a ssh-connection to the vm and downloading a
> > kernel-source in
> > > it.
> > > 
> > > Then i did a "xm migrate mx1-smartnet-de xen0" on xen1 to 
> > move it back 
> > > again. After that, the vm freezes at 100%CPU and that's it! Can't
> > connect
> > > to it any more, whether via ssh nor via vnc/fb or console. Only "xm 
> > > destroy" could help, "xm shutdown" has no impact.
> > > 
> > > For debugging, i added the concerning parts of the xend.log 
> > from each
> > and
> > > the kernel-configs, so that you could try to help me find the prob
> > perhaps
> > > in the logs?
> > > 
> > > Just after having started the vm:
> > > xen0_after_start_of_vm.log
> > > 
> > > Then after the first migration:
> > > xen0_after_migrate_to_xen1_of_vm.log
> > > xen1_after_migrate_to_xen1_of_vm.log
> > > 
> > > And last, after the reverse:
> > > xen0_after_migrate_back_from_xen1_of_vm.log
> > > xen1_after_migrate_back_from_xen1_of_vm.log
> > > 
> > > I don't believe it is a drbd/lvm problem, because drbd keeps in "0:
> > > cs:Connected ro:Primary/Primary ds:UpToDate/UpToDate C 
> > r---" and there
> > are
> > > no lv-concerning log-entries in syslog.
> > > 
> > > There are of course errors concerning "retry suspend domain failed",
> > but
> > > there's no hint, WHY this has got failed?
> > > 
> > > Kind regards, Florian
> > >
> > **************************************************************
> > **********
> > **
> > > ********************
> > > IMPORTANT: The contents of this email and any attachments are 
> > > confidential. They are intended for the named recipient(s) only.
> > > If you have received this email in error, please notify the system
> > manager
> > > or the sender immediately and do
> > > not disclose the contents to anyone or make copies thereof.
> > > *** eSafe scanned this email for viruses, vandals, and malicious
> > content.
> > > ***
> > >
> > **************************************************************
> > **********
> > **
> > > ********************
> > 
> > 
> **********************************************************************************************
> IMPORTANT: The contents of this email and any attachments are confidential. 
> They are intended for the 
> named recipient(s) only.
> If you have received this email in error, please notify the system manager or 
> the sender immediately and do 
> not disclose the contents to anyone or make copies thereof.
> *** eSafe scanned this email for viruses, vandals, and malicious content. ***
> **********************************************************************************************
> 
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users


_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users