[dm-crypt] crypetsetup and GPT partitions

Michael Kjörling michael at kjorling.se
Fri Feb 10 10:10:21 CET 2017

On 8 Feb 2017 12:33 +0000, from shoutchen at curtisswright.com (Houtchen, Steven):
> So my question is, is "cryptsetup" compatible with parted and
> GPT partition table? Or do  need to use something like "lvm2"
> to accomplish what I am trying to do?

LUKS doesn't care what the backing device is. You can have an
encrypted container backed by a file, or by a block device (which in
turn can be either a whole disk, a partition, or a loopback device
exposing a part of a different block device). All it cares about is
that it's big enough to hold the LUKS header, and that writes are
persisted in some manner.

As far as LUKS is concerned, the container doesn't even need to be
large enough to hold any file system.

Michael Kjörling • https://michael.kjorling.semichael at kjorling.se
                 “People who think they know everything really annoy
                 those of us who know we don’t.” (Bjarne Stroustrup)

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