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[dm-devel] target that injects errors?



I find myself wanting to test a patch that reacts to EIO deep in aio
O_DIRECT.  Has anyone done a target that can inject errors into the IO
path?  I found sct's "testdrive", but it seems a bit crufty these days:

  http://people.redhat.com/sct/patches/testdrive/

If someone hasn't done this, I'll take a swing at it.

Thanks.

- z


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