[dm-crypt] Can LUKS be used on a tmpfs?
sven at whgl.uni-frankfurt.de
Wed Dec 23 20:36:51 CET 2015
Simply short: No.
tmpfs is, as the name suggests, a filesystem, which lives in the VFS
domain, whereas dmcrypt lives in the block layer.
So yes, ramdisks in the form of blockdevices will work. It might even
possibly work on a file within the tmpfs. (Give is a try [there's still
loopback devices..], afterall it's all volatile memory and fiddling
around does not need any extra work)
Am 23.12.2015 um 20:05 schrieb H McCurdy:
> Is it possible to get crypt_init() to use a tmpfs instead of a block
> device or a file?
> I realize there are sanity issues related to such an inquiry because the
> key is in RAM and so is the "disk." Regardless, I have the question.
> BTW, an older ramdisk (/dev/ram0) does appear to work.
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> dm-crypt at saout.de
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