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Re: Checksumming layer Jordi Prats Mon Apr 07 12:04:56 2008

Hi,
You could use tripwire to check periodically all files instead of relay on the file system for that task. (I think no file system does this checking by now)

Jordi

Jeremy Sanders wrote:
Is there any sort of checksumming layer that could lie between the disk and
ext3, or be implemented as part of ext3/4?

We've just had a couple of drives recently where the drive started silently
corrupting the data without generating any I/O or SMART errors. This is
pretty disastrous as you don't necessarily find out about the corruption
until it is too late.

I imagine the overhead of such a layer wouldn't be that much. I would pay a
few percent performance for knowing that the data is not corrupt.

Jeremy



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 C E / S / C A      Dept. de Sistemes
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