Re: Migration fail randomly
On 2015-09-16 08:45, Sander Klein wrote: On 2015-09-15 15:38, Paolo Bonzini wrote: On 15/09/2015 15:36, Sander Klein wrote: On 2015-09-15 15:24, Paolo Bonzini wrote: What kernel runs in the host? The host is the standard Debian Jessie kernel, 3.16.7-ckt11-1+deb8u3. Please try a more recent kernel (3.19 or newer). Will do, I just pulled 4.1.6 from Debian Backports. It does take some time before the problem might pop up so I will be back in a couple of days/weeks. I could reproduce it again. All my KVM hosts are running 4.1.6, but the migration still sometimes fails. The VM must be running for a day or 2 to be able to trigger it. It does not seem to happen to all VM's, some VM's seem to be more vulnerable to this than others. I'm not sure of the problem is in kernel or in userspace. Since no error is given at all. Regards, Sander -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Migration fail randomly
On 2015-09-15 15:38, Paolo Bonzini wrote: On 15/09/2015 15:36, Sander Klein wrote: On 2015-09-15 15:24, Paolo Bonzini wrote: What kernel runs in the host? The host is the standard Debian Jessie kernel, 3.16.7-ckt11-1+deb8u3. Please try a more recent kernel (3.19 or newer). Will do, I just pulled 4.1.6 from Debian Backports. It does take some time before the problem might pop up so I will be back in a couple of days/weeks. Sander -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Migration fail randomly
Hi, I'm running Debian Jessie with KVM 2.1 on 6 nodes with an NFS3 back-end and sometimes when I migrate a VM it suddenly 'hangs'. The KVM process is running on the new node, eating up all it's CPU cycles but it does not respond to anything anymore. I don't see any errors logged and it seems like the migration went fine except for the VM hanging. It doesn't matter if I do a live migrate or a save and restore, it happens with both ways. Destroying and booting the VM fixes it of course and I can migrate it afterwards, but after a couple of days the same happens again when I try to migrate it. The VM's range from Debian Squeeze (With a 3.2 kernel), Wheezy, and Jessie. Does anyone have an idea why this happens and if I can fix this? Regards, Sander -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Migration fail randomly
On 15/09/2015 15:36, Sander Klein wrote: > On 2015-09-15 15:24, Paolo Bonzini wrote: >> >> What kernel runs in the host? > > The host is the standard Debian Jessie kernel, 3.16.7-ckt11-1+deb8u3. Please try a more recent kernel (3.19 or newer). Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Migration fail randomly
On 15/09/2015 12:57, Sander Klein wrote: > > I'm running Debian Jessie with KVM 2.1 on 6 nodes with an NFS3 back-end > and sometimes when I migrate a VM it suddenly 'hangs'. The KVM process > is running on the new node, eating up all it's CPU cycles but it does > not respond to anything anymore. I don't see any errors logged and it > seems like the migration went fine except for the VM hanging. > > It doesn't matter if I do a live migrate or a save and restore, it > happens with both ways. > > Destroying and booting the VM fixes it of course and I can migrate it > afterwards, but after a couple of days the same happens again when I try > to migrate it. > > The VM's range from Debian Squeeze (With a 3.2 kernel), Wheezy, and Jessie. > > Does anyone have an idea why this happens and if I can fix this? What kernel runs in the host? Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Migration fail randomly
On 2015-09-15 15:24, Paolo Bonzini wrote: What kernel runs in the host? The host is the standard Debian Jessie kernel, 3.16.7-ckt11-1+deb8u3. Sander -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
