Is it possible to determine RBD device size using the 'virsh' command?

Solution Verified - Updated -


  • I want to pull the RBD device size at nova/qemu layer. I've and tried this command:
# virsh domblklist instance-0000060c 
Target     Source
vda        testnode-cinder-volume-1/53g912e6-ab12-4b1f-84c3-63dc0e7e2843_disk

# virsh domblkinfo instance-0000060c  vda
error: internal error: missing storage backend for network files using rbd protocol
  • Is there a way to pull the size of an RBD device per VM at the qemu/libvirt layer?


  • Red Hat Enterprise Linux OpenStack
  • Red Hat Enterprise Ceph Storage
  • RADOS Block Device

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content