On 04/30/2018 05:48 PM, Andre Goree wrote:

I'm unable to detach a disk from a Windows guest using the 'virsh detach-disk' command.

Even though 'domblklist' shows the disk attached, and on the FIRST iteration, it says the command "completed successfully," 'domblklist will still show the disk attached and subsequent 'detach-disk' commands fail with 'no disk found whose source path or target is ${location}'

~ # virsh domblklist 31907-1063435 Target     Source ------------------------------------------------ vda        ${concatenated}/31907-1063435/2018-04-28-190529 vdb        ${concatenated}/31907-67863/2018-03-21-033216.2018-04-28-190529

~ # virsh detach-disk --domain 31907-1063435 /var/lib/libvirt/images/instances/31907-67863/2018-03-21-033216.2018-04-28-190529 --persistent error: No disk found whose source path or target is /var/lib/libvirt/images/instances/31907-67863/2018-03-21-033216.2018-04-28-190529

Any ideas as to why this happens?

Sure. There's a difference between live and config XML https://wiki.libvirt.org/page/VM_lifecycle detach-disk --persistent removes disk from config XML and domblklist prints out disks from current state of domain (i.e. if it's running it prints out disks from live XML). Michal