Authenticated Btrfs

Posted May 8, 2020 4:27 UTC (Fri) by marcH (subscriber, #57642)
In reply to: Authenticated Btrfs by neilbrown
Parent article: Authenticated Btrfs

> I hope that clarifies the situation a little.

It really does, thank you so much!

So, the entire RAID implementation assumes blocks are either missing or old but never "corrupted" (intentionally or not), I think I got it. Combining RAID with solutions that _do_ deal with block corruption sounds like... perfect to confuse me ;-)

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Authenticated Btrfs

Posted May 14, 2020 13:57 UTC (Thu) by Wol (subscriber, #4433) [Link] (4 responses)

I've just started building my new system with raid on top of dm-verity. So hopefully this will soon be part of md-raid, but that depends on me getting familiar with mdadm ... :-)

Cheers,
Wol

Authenticated Btrfs

Posted May 14, 2020 14:01 UTC (Thu) by Wol (subscriber, #4433) [Link] (3 responses)

Whoops - dm-integrity ...

Cheers,
Wol

Authenticated Btrfs

Posted May 15, 2020 14:38 UTC (Fri) by zsitvaij (guest, #66284) [Link]

Have you read this comparison on zfs/btrfs/dm-integrity+mdadm? It's a very detailed and fun read if such things interest you: https://www.unixsheikh.com/articles/battle-testing-data-i...

Authenticated Btrfs

Posted May 17, 2020 15:18 UTC (Sun) by grifferz (subscriber, #62128) [Link] (1 responses)

I would be very interested in any benchmarks you are able to do, to see what use of dm-integrity costs.

Authenticated Btrfs

Posted May 17, 2020 16:46 UTC (Sun) by Wol (subscriber, #4433) [Link]

If I get the chance ...

mind you, once my current machine gets demoted to testbed I need to buy a 4-port add-in SATA card to fit all the 1TB and 500GB disks I've acquired, so testing with and without dm-integrity shouldn't be too bad ...

Cheers,
Wol