AIC7XXX (2940UW Pro) file system corruption

[Matthias Andree]

Scott Long <scottl at freebsd.org> writes:

> The amd(4) driver doesn't do tagged queueing, so it certainly will not
> work the disk as hard as the ahc driver will.

Well, it does some sort of tagged command, but I haven't looked closer
if that's tagged command queueing. The Linux tmscsim driver which is
somewhat related (it also came from Tekram) supports TCQ.

> I don't know much about the sym(4) driver, but it might not work the
> disk as hard either.

It supports TCQ and handles some of the protocol on the chip, and SRAM
is widespread on sym(4) controllers (and not found on ahc(4) stuff
often)...

> While the disk platters might not be going bad, the electronics might be
> aging and getting more sensitive to the heat.  Make sure that the disk
> is well vented and cooled for now, and look into replacing it soon.

I'll look after that.

-- 
Matthias Andree

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