On Tue, 30 Oct 2007, Tomasz Torcz wrote:
> On 10/30/07, Neal Pollack <[EMAIL PROTECTED]> wrote:
>>> I'm experiencing major checksum errors when using a syba silicon image 3114
>>> based pci sata controller w/ nonraid firmware. I've tested by copying data
>>> via sftp and smb. With everything I've swapped out, I can't fathom this
>>> being a hardware problem.
>> Even before ZFS, I've had numerous situations where various si3112 and
>> 3114 chips
>> would corrupt data on UFS and PCFS, with very simple copy and checksum
>> test scripts, doing large bulk transfers.
>
> Those SIL chips are really broken when used with certain Seagate drivers.
> But I have data corrupted by them with WD drive also.
> Linux can workaround this bug by reducing transfer sizes (and thus
> dramatically impacting speed). Solaris probably don't have workaround.
Might be slightly off-topic for the whole, but _this_ specific thing
(reducing transfer sizes) is possible on Solaris as well. As documented
here:
http://docs.sun.com/app/docs/doc/819-2724/chapter2-29?a=view
You can also read a bit more on the following thread:
http://www.opensolaris.org/jive/thread.jspa?threadID=6866
It's possible to limit this system-wide or per-LUN.
Best regards,
FrankH.
> With this quirk enabled (on Linux), I get at most 20 MB/s from drives,
> but ZFS do not report any corruption. Before I had corruptions hourly.
>
> More info about SIL issue: http://home-tj.org/wiki/index.php/Sil_m15w
> I have Si 3112, but despite SIL claims other chips seem to be affected also.
>
>
> --
> Tomasz Torcz
> [EMAIL PROTECTED]
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> zfs-discuss@opensolaris.org
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>
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