An anonymous reader writes "I have been using Gentoo Linux for a long time now and have always been satisfied with one of its many disk encryption tools: cryptsetup (dm-crypt and LUKS). However, I recently gave FreeBSD a try and, although I concluded BSD is not for me, I was amazed at geli(8), FreeBSD's disk encryption tool. It happens this tool also provides what it calls an 'authentication mode.' Besides encrypting the disk sector-by-sector, it also stores checksums (sha256 in my case) in it on every write. On reads, if the checksum mismatchs, it propagates the error up, resulting in, say, a read() error. Thus I do not have to trust my disk (except of course for the boot partition) any longer: any data inconsistency will be detected before the data is used. Having searched for a long time without answers, I want to ask: is there something similar to this in Linux? Note: Using Btrfs is a valid solution, but is far from stable (got a few oopses during my tests)."
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