Eben King wrote:
> I have two (identical) hard drives. Every night, I have a cron job that
> cats /dev/hda > /dev/hdb . Lately I've been finding DMA off at the
> conclusion of this copy. From last night (this morning) in
> /var/log/messages:
>
> May 23 06:08:20 pc kernel: hdb: dma_timer_expiry: dma status == 0x61
> May 23 06:08:21 pc kernel: hdb: DMA timeout error
> May 23 06:08:21 pc kernel: hdb: dma timeout error: status=0xd0 { Busy }
> May 23 06:08:21 pc kernel: ide: failed opcode was: unknown
> May 23 06:08:21 pc kernel: hda: DMA disabled
> May 23 06:08:21 pc kernel: hdb: DMA disabled
> May 23 06:08:21 pc kernel: ide0: reset: success
>
> Is it time to replace that drive?
No.
If its regular ATA, then they're on the same ATA ribbon and I'd try them on
separate channels. I suspect a master/slave issue of sorts. Do both drives
support and run at the same Ultra DMA mode?
`hdparm -i /dev/hda` `hdparm -i /dev/hdc`
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