Comment 21 for bug 1813228

# udevadm info --query=all /sys/class/block/sdcy1
Unknown device "/sys/class/block/sdcy1": No such device

Ugh, I typo'd, I wanted to query the partition that was still around

% udevadm info --query=all /sys/class/block/sdcy/sdcy1

I did notice that dmsetup remove is somewhat racy, so I'll likely
switch to combining a settle along with a util.wait_for_removal() which
watches a path in sysfs until it's gone.

Thanks,
Ryan