[libvirt-users] ubuntu virsh snapshot-create-as gives Error -22 while writing VM

[Jon Schipp]

There was no entry in kern.log for AppArmor. Thanks I'll look at the qemu
lists.

On Tue, Jan 6, 2015 at 3:27 PM, Eric Blake <eblake at redhat.com> wrote:

> On 01/06/2015 02:03 PM, Jon Schipp wrote:
> > Hello all, I'm trying to create an online internal snapshot to work with
> > Cuckoo Sandbox.
> > I keep receiving this -22 error below on my Ubuntu system and I'm out of
> > ideas, been at it for a while so any help is appreciated.
> >
> > root at cuckoo-sec:~# virsh snapshot-create-as cuckoo cuckoo-snap1 "Cuckoo
> > Snapshot"
> > error: operation failed: Error -22 while writing VM
>
> That message comes from qemu (file a bug report with them for
> poor-quality error message; looks like someone forgot to convert a
> negative value back into a positive EINVAL errno value).
>
> As for why qemu is seeing an EINVAL, I have to wonder if it is a case of
> AppArmor blocking access to a file.  But that's weird, as internal
> snapshots don't normally need to open any additional files.  At any
> rate, it's more likely to be a qemu bug than a libvirt one.
>
> --
> Eric Blake   eblake redhat com    +1-919-301-3266
> Libvirt virtualization library http://libvirt.org
>
>


-- 
Jon Schipp,
jonschipp.com, sickbits.net, opennsm.ncsa.illinois.edu
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