migration fails with virtio-blk
Apparently there's an issue with migration when virtio-blk is in use at the time migration occurs. See Debian bug #580649 for details: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=580649 In short: 2.6.26 (guest) + 0.12.3 + virtio-blk fails. 2.6.32 guest works, 0.11 works, non-virtio-blk works. Debian qemu-kvm is compiled without --enable-iothread - JFYI. The bugreport contains a backtrace taken from guest. Now, one can say it's a bug in 2.6.26 kernel, which is quite old. But the problem does not occur with qemu-kvm-0.11, so it might be treated as a regression instead. Thanks! /mjt -- 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 fails with virtio-blk
10.05.2010 13:49, Michael Tokarev пишет: Apparently there's an issue with migration when virtio-blk is in use at the time migration occurs. See Debian bug #580649 for details: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=580649 In short: 2.6.26 (guest) + 0.12.3 + virtio-blk fails. 2.6.32 guest works, 0.11 works, non-virtio-blk works. It looks like a problem reported on qemu-devel list should fix the issue here: http://marc.info/?l=qemu-develm=127350821419989 Testing... It wont be fast because I want to hear from the OP. Thanks! /mjt -- 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 fails with virtio-blk
10.05.2010 22:38, Anthony Liguori wrote: On 05/10/2010 01:34 PM, Michael Tokarev wrote: In short: 2.6.26 (guest) + 0.12.3 + virtio-blk fails. 2.6.32 guest works, 0.11 works, non-virtio-blk works. It looks like a problem reported on qemu-devel list should fix the issue here: http://marc.info/?l=qemu-develm=127350821419989 Can't be, that's a vhost patch and 0.12.3 doesn't support vhost. Well, that was really close. qemu-kvm-0.12 has the following code in that place: vdev-features = features; the patch mentioned has this: +if (vdev-set_features) +vdev-set_features(vdev, features); so basically kvm had the same code here, just not wrapped into a function ;) And sure thing you're right, it does not help any. :) Thanks! /mjt -- 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 fails with virtio-blk
On 05/10/2010 01:34 PM, Michael Tokarev wrote: 10.05.2010 13:49, Michael Tokarev пишет: Apparently there's an issue with migration when virtio-blk is in use at the time migration occurs. See Debian bug #580649 for details: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=580649 In short: 2.6.26 (guest) + 0.12.3 + virtio-blk fails. 2.6.32 guest works, 0.11 works, non-virtio-blk works. It looks like a problem reported on qemu-devel list should fix the issue here: http://marc.info/?l=qemu-develm=127350821419989 Can't be, that's a vhost patch and 0.12.3 doesn't support vhost. Regards, Anthony Liguori Testing... It wont be fast because I want to hear from the OP. Thanks! /mjt -- 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 -- 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
