Apparently spurious ZFS CRC errors (was Re: ZFS data error without reasons)

Mark Powell M.S.Powell at
Thu Mar 26 06:23:46 PDT 2009

On Thu, 26 Mar 2009, Peter Jeremy wrote:

> On 2009-Mar-25 16:29:40 +0100, Bernd Walter <ticso at> wrote:
>> I wouldn't be surprised if the problem is in the drive firmware.
>> Preread and wc both have the potential to put a lot load to the drives
>> and can trigger bugs that otherwise wouldn't matter.
> I'll second this.  Whilst stress-testing ZFS, I've managed to wedge a
> Samsung drive to the point where it needed a power-cycle to recover
> (HD103UJ 1AA01112 if anyone wants to know what to avoid).

   Thanks for the info. I have one of those and was wondering about how 
it'd perform with zfs.
   As an aside, do you have any drive recommendations?
   Or is 'reliable zfs performance on consumer SATA drives' an oxymoron? :(

Mark Powell - UNIX System Administrator - The University of Salford
Information & Learning Services, Clifford Whitworth Building,
Salford University, Manchester, M5 4WT, UK.
Tel: +44 161 295 6843  Fax: +44 161 295 5888 for PGP key

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