[mythtv-users] Guide, and DMA problems

[Rudy Zijlstra]

Ben Curtis wrote:

>Problem 2, DMA:
>So I started getting random lockups pretty frequently a few days ago.  
>Seems to happen when nothings been recorded in a while and the system
>starts to record.  The error is almost always DMA related in
>/var/log/messages:
>
>
>May 28 11:42:56 myth kernel: hdd: timeout waiting for DMA
>May 28 11:42:56 myth kernel: hdd: timeout waiting for DMA
>May 28 11:42:56 myth kernel: hdd: (__ide_dma_test_irq) called while not 
>waiting
>May 28 11:42:56 myth kernel: hdd: status error: status=0x7f { DriveReady 
>DeviceFault SeekComplete DataRequest CorrectedError
>May 28 11:42:56 myth kernel: hdd: status error: error=0x7f { 
>DriveStatusError UncorrectableError SectorIdNotFound TrackZeroN
>May 28 11:42:56 myth kernel: hdc: DMA disabled
>
>or
>
>May 28 01:29:51 myth kernel: hdd: dma_timer_expiry: dma status == 0x61
>  
>
I'd try it with a different disk for hdd. Seems like it is getting flaky.
Mark the 2 status error lines, the first contains: DeviceFault and 
CorrectedError
the second DriveStatusError and UncorrectableError, SectorIdNotFound. 
This indicates hard disk failure.

It would be interesting to do a bad block scan of the disk. I'm hoping 
you have nothing irreplaceable on it?

Rudy