At what price backups?

Slowly but steadily in the process of migrating all the external HDD backups to encrypted volumes...
It is somehow a PITA, but what a hell, I sleep better at night.

Some annoying problems I've run into, sometimes the encrypted drive refuses to mount properly. Usually this happens because the prior mount did not exit cleanly.

sojourner # ls /dev/mapper/
control  udisks-luks-uuid-50508a07-7d38-4be4-975e-ee1d048c1cd6-uid1000
sojourner # sudo dmsetup ls
udisks-luks-uuid-50508a07-7d38-4be4-975e-ee1d048c1cd6-uid1000 (251, 0)
sojourner # sudo dmsetup remove udisks-luks-uuid-50508a07-7d38-4be4-975e-ee1d048c1cd6-uid1000