List open dm-crypt LUKS volumes

Question

If I mount a simple loop device,

losetup -a

give me the devices opened. Is something similar possible with cryptsetup?

Cristian Ciupitu · Accepted Answer · 2019-11-27 00:28:30Z

27

dmsetup is useful for anything device mapper related. For Example:

[root@localhost]~# dmsetup ls --target crypt
luks-90dc732d-e183-4948-951e-c32f3f11b305   (253, 0)
[root@localhost]~#

Cristian Ciupitu

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answered Feb 18 '15 at 1:45

Bratchley

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Is there any way to list all mappings with their target type? The best I could manage was for i in $(sudo dmsetup targets | cut -f1 -d' '); do echo $i:; sudo dmsetup ls --target $i; echo; done – mwfearnley Apr 5 '18 at 9:49
6

Thx. Getting the list shouldn't be so cryptic... luksList would be nice. – bvj Apr 18 '19 at 5:31

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kaefert · Accepted Answer · 2019-09-17 13:43:32Z

15

I just looked for the same thing, a list of my luks partitions, though I wanted a mapping to the physical /dev/sdX devices.

lsblk --fs

answered Sep 17 '19 at 13:43

kaefert

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This is not that bad to be honest. Thanks! – Konrad Gajewski Jan 18 '20 at 15:13
Just a friendly reminder that lsblk supports -J or --json to output the result in a machine readable format. Which can be useful when doing a reverse lookup of dmcrypt mapper devices (/dev/sda -> luksloop for instance by iterating the /dev/sda children object). – Torxed Mar 14 at 11:53

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