Re: [Qemu-devel] 2 errors of vnet and snapshot.

[Eric Blake]

On 05/25/2013 07:15 AM, yue-kvm wrote:
> hi,all
> i encounterd 2 errors .  qemu 1.5(source code build), libvirt 
> libvirt-0.10.2-18.el6_4.2.x86_64.

Are you using RHEL or CentOS?  If it is RHEL, then I suggest you ask Red
Hat for support.

> 1. in guest, i can ping out, but get no answers. even throught i ping HOST ip.
> May 25 20:50:59 ovirtdev NetworkManager[2370]: <warn> 
> /sys/devices/virtual/net/vnet0: couldn't determine device driver; ignoring...
> 2.  permissive selinux. and give all permission to everyone .
> address@hidden images]# virsh snapshot-create-as linux snapshot1 "snapshot1" 
> --disk-only --atomic
> error: internal error unable to execute QEMU command 'transaction': 
> /var/lib/libvirt/images/test.snapshot1: error while creating qcow2: 
> Permission denied

This error is probably associated with libvirt, not qemu; where libvirt
may be setting permissions incorrectly (there have been bug fixes in the
past, and libvirt 1.0.5 does much better than libvirt 0.10.2).  As such,
this is probably not the best list to get help for your issue.
Furthermore, it would help if you show the entire backing chain of the
file that you are trying to snapshot (qemu-img info
/var/lib/libvirt/images/test.snapshot1).

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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