Messages in this thread | | | Date | Mon, 8 Nov 2010 00:05:09 +0100 | From | Andi Kleen <> | Subject | Re: [PATCH] DM-CRYPT: Scale to multiple CPUs v3 on 2.6.37-rc* ? |
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On Sun, Nov 07, 2010 at 10:39:23PM +0100, Milan Broz wrote: > On 11/07/2010 08:45 PM, Andi Kleen wrote: > >> I read about barrier-problems and data getting to the partition when > >> using dm-crypt and several layers so I don't know if that could be > >> related > > > > Barriers seem to be totally broken on dm-crypt currently. > > Can you explain it?
e.g. the btrfs mailing list is full of corruption reports on dm-crypt and most of the symptoms point to broken barriers.
> Barriers/flush change should work, if it is broken, it is not only dm-crypt. > (dm-crypt simply relies on dm-core implementation, when barrier/flush > request come to dmcrypt, all previous IO must be already finished).
Possibly, at least it doesn't seem to work.
-Andi -- ak@linux.intel.com -- Speaking for myself only.
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