Re: [libvirt] [libvirt-users] Virsh Attach Volume Fails

On 05/06/2014 02:51 AM, Vilobh Meshram wrote: > Hi, > > When trying to attach a created volume to an instance using the virsh >utility I am running into this error :- > > > [] $ sudo virsh attach-device instance-00000015 disk.xml > > error: Failed to attach device from disk.xml > > error: internal error unable to execute QEMU command >'__com.redhat_drive_add': Device 'drive-virtio-disk21' could not be >initialized That's an error message from RHEL qemu, and not available from upstream qemu nor triggered by upstream libvirt (that is, a RHEL-specific downstream patch to libvirt is attempting to use a downstream qemu command that upstream does not have). Have you opened a support ticket with Red Hat? > > > For experimental purpose I have libvirt 0.10.2 and QEMU 0.12.1. The >volume to be attached is on a remote storage. This list is probably better suited to help if you can reproduce with upstream versions (libvirt 1.2.4 and qemu 2.0), or at a bare minimum, post the contents of disk.xml that is failing on you. It's hard to say whether the error is in libvirt (perhaps botched SELinux permissions getting in the way?) or in qemu; but since libvirt is just parroting qemu's error message, the investigation needs to look more at why qemu is throwing the message. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org