Comment 2 for bug 1874501

Actually it seems this was caused by subiquity running vgscan --mknodes during block probing:

root@ubuntu-server:/# rm -rf /dev/mapper/mpath*
root@ubuntu-server:/# ls -l /dev/mapper/
total 0
crw------- 1 root root 10, 236 Apr 24 05:57 control
root@ubuntu-server:/# vgscan --mknodes
root@ubuntu-server:/# ls -l /dev/mapper/
total 0
crw------- 1 root root 10, 236 Apr 24 05:57 control
brw-rw---- 1 root disk 253, 0 Apr 27 21:16 mpatha
brw-rw---- 1 root disk 253, 1 Apr 27 21:16 mpatha-part1

retargeting bug...