On Fri, Mar 20, 2015 at 12:34:59PM +0100, Francesc Guasch wrote: > On Fri, Mar 20, 2015 at 10:03:20AM +0000, Stefan Hajnoczi wrote: > > Hi Stefan, thank you very much for answering me. > > > On Wed, Mar 18, 2015 at 04:53:28PM +0100, Francesc Guasch wrote: > > > I have three Ubuntu Server 14.04 trusty with KVM. Two of > > > them are HP servers and one is Dell. Both brands run fine > > > the KVM virtual servers, and I can do live migration between > > > the HPs. But I get I/O errors in the vda when I migrate to > > > or from the Dell server. > > > > > > I have shared storage with NFS, mounted the same way in all > > > of them: > > > > > > As soon as it starts in the origin console I spot I/O error > > > messages, when it finishes I got them in the console in the > > > destination server. The file system is read only and I have to > > > shut it down hard. > > > > > > end request I/O error, /dev/vda, sector 8790327 > > > > "origin console" == guest's console? > > Yes, I mean I open two consoles with virt-manager, one in > the origin host and another one in the destination > > > > I/O errors starting while the guest is still running on the migration > > source host is strange. I wonder if something happened to the NFS file > > related to file permissions or SELinux labels? > > I think I found something checking SELinux. ls -Z and getfattr > return nothing. But ps -eZ showed something very different > in the Dell server. > > This is in the HP server: > /usr/sbin/libvirtd 1034 ? 11:51:44 libvirtd > libvirt-09540b5d-82 701 ? 05:28:40 qemu-system-x86 > unconfined 1 ? 00:01:00 init > > In the Dell server init is confined in lxc and there are also > lxc-start processes. > > /usr/sbin/libvirtd 1622 ? 05:07:07 libvirtd > libvirt-8a0f9087-32d... 29926 ? 00:00:01 qemu-system-x86 > lxc-container-default 1774 ? 00:00:00 init > /usr/bin/lxc-start 1763 ? 00:00:00 lxc-start > > There is also LXC installed in that server ! Maybe that is messing > with kvm. The qemu processes look fine to me but there is a chance > the problem comes from there. > > I could move the LXC somewhere else or I can keep it there to > try to fix this issue. What do you advice I should do now ? I suggest asking on the libvirt mailing list: libvirt-list@xxxxxxxxxx
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