Re: Random host bus errors with pata_it821x, filesystem corruption

[Alan Cox]

> Dec  3 21:30:42 pentium kernel: ata3.00: status: { DRDY ERR }
> Dec  3 21:30:42 pentium kernel: ata3.00: error: { IDNF }

The drive firmware is reporting an unreadable block (or invalid block
number)

> I wonder what might cause these errors? I switched the controller into non-RAID mode and read SMART - both drives
> are 100% OK (no pending or reallocated sectors, no errors logged).

I would keep the controller in that mode anyway to be honest - the RAID
mode firmware is a bit variable and some versions blow up for reasons
I've never figured.

Alan
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