Apologies, I forgot to add the following showing the dm-crypt device has been removed:
$ ll /dev/mapper/crypt-volume-9b3a4f89-4194-4972-9292-b60c97c824e2
ls: cannot access '/dev/mapper/crypt-volume-9b3a4f89-4194-4972-9292-b60c97c824e2': No such file or directory
Apologies, I forgot to add the following showing the dm-crypt device has been removed:
$ ll /dev/mapper/ crypt-volume- 9b3a4f89- 4194-4972- 9292-b60c97c824 e2 crypt-volume- 9b3a4f89- 4194-4972- 9292-b60c97c824 e2': No such file or directory
ls: cannot access '/dev/mapper/