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SubjectRe: Nature of ext4 corruption fixed by recent patch?
On Wed, May 20, 2015 at 10:23:22PM -0300, Henrique de Moraes Holschuh wrote:
> On Wed, 20 May 2015, josh@joshtriplett.org wrote:
> > md-based RAID0, on top of a pair of SSDs.
>
> Might this be it? It was mentioned in another, more recent thread about
> data loss involving md-raid0 and ssds...
>
> https://bugzilla.kernel.org/show_bug.cgi?id=98501

That looks extremely likely, particularly since I do have the "discard"
option enabled. And discarding the wrong blocks seems entirely
consistent with the symptoms I've observed.

Thanks! I'll disable discard as a short-term workaround until that
change goes into the Debian kernel.

- Josh Triplett


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