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Re: [dm-devel] dm-crypt barrier support is effective



On 12/01/2010 08:34 PM, Jon Nelson wrote:
> Perhaps this is useful: for myself, I found that when I started using
> 2.6.37rc3 that postgresql starting having a *lot* of problems with
> corruption. Specifically, I noted zeroed pages, corruption in headers,
> all sorts of stuff on /newly created/ tables, especially during index
> creation. I had a fairly high hit rate of failure. I backed off to
> 2.6.34.7 and have *zero* problems (in fact, prior to 2.6.37rc3, I had
> never had a corruption issue with postgresql). I ran on 2.6.36 for a
> few weeks as well, without issue.
> 
> I am using kcrypt with lvm on top of that, and ext4 on top of that.

With unpatched dmcrypt (IOW with Linus' git)? Then it must be ext4 or
dm-core problem because there were no patches for dm-crypt...

Anyway, thanks for hint how to reproduce it.

Milan


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