>Hi,
>
>After upgrading the kernel from 2.4.20 to 2.4.21, sometimes I see
>the following messages:
>
>hda: dma_timer_expiry: dma status == 0x24
>hda: lost interrupt
>hda: dma_intr: bad DMA status (dma_stat=30)
>hda: dma_intr: status=0x50 { DriveReady SeekComplete }
>
>It happens especially when there is a lot of disk I/O (which stops
>for a few seconds when these messages appear), with three different
>disks (very unlikely they all decided to die at the same time...),
>
>
Are you using software raid or devfs?
I was losing interrupts and disabling devfs removed the problem (very
reproducable with software raid 5 -- never really tried much heavy disk
use without raid.)
Edward King
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