Alvin Thompson <alvin@xxxxxxxxxxxxxxxxx> wrote:
> Can you later determine the mapped device name ('backup' in this case) if all you know is the device (/dev/sdd1)?
There is no way to do this offline, i.e. as long as the mapped device is
not created. LUKS does not store information about "preferred names" or
something like that.
If the device is online, you can try
ls -l /sys/block/dm-*/slaves/*
Just modify the pattern to your needs, like /sys/block/dm-*/slaves/sdd1
The mapping from dm-x to the symbolic name could be a bit harder, just
in case the dm-* names don't fit your needs.
I'd go for
ls -l /dev/mapper/* | grep " $(sed -e 's/:/, */' /sys/block/dm-x/dev) "
or something like that. Mind the surrounding spaces to get the pattern
safe or use grep -w.
regards
Mario
--
There are trivial truths and the great truths.
The opposite of a trivial truth is plainly false.
The opposite of a great truth is also true.
-- Niels Bohr
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