+++ This bug was initially created as a clone of Bug #1824112 +++ Description of problem: The following fix is required in os-brick by bug 1805677 and the associated backports through 16.1, 15 and 13. rbd: Use showmapped to find the root RBD device during disconnect_volume https://review.opendev.org/#/c/720178/
Closing EOL, OSP 15 has been retired as of Sept 19, 2020