SHEDの博客

To delete a zombie Cinder volume in OpenStack, follow these steps: 1. Attempt to remove the volume using `lvremove /dev/cinder-volumes/volume-`. If you encounter a "device busy" error, check if the volume is in use. 2. Use `dmsetup info -c /dev/cinder-volumes/volume-` to see if it's open, and `fuser -m /dev/cinder-volumes/volume-` to identify which processes are using it. 3. Terminate the processes with `kill -9 <PID>` where `<PID>` are the process IDs. 4. If you receive an error indicating the volume is used by another device, find the mapping with `dmsetup info -c` and check the holders with `ls -la /sys/dev/block/253\:6/holders`. 5. Remove any associated md devices using `mdadm -S /dev/md125` and then remove the corresponding dm device with `dmsetup remove /dev/dm-6`. 6. Check again if the volume is open and, once confirmed, execute `lvremove /dev/cinder-volumes/volume-` again. 7. Upon success, you will see a confirmation message indicating the volume has been deleted. Finally, delete the volume from OpenStack.