Disk Errors

[Al Plant]

Wojciech Puchar wrote:
>> ad2: FAILURE - READ_DMA timed out LBA=0
>> ad2: TIMEOUT - READ_DMA retrying (1 retry left) LBA=1
>> ad2: TIMEOUT - READ_DMA retrying (0 retries left) LBA=1
>>
>> The flash drive is detected with 3940272 sectors.  Is there a way to 
>> control the LBA= parameter?  Does it matter if I try?
> no.
> 
>>
>> How can I control the number of retries?
>>
>> I read that FreeBSD doesn't use the BIOS at least for CHS.  Does 
>> FreeBSD use the BIOS for PIO and UDMA modes?
> no.
> 
> try disabling dma with
> 
> set hw.ata.ata_dma=0
> 
> bootloader command
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Aloha,

Wojciech, could be on the right track. I have recently had to do this on 
  several different FreeBSd server boxes to stop these errors. Both 
current FreeBSD 7 and  8 have done this. Hardware didnt seem to matter.


~Al Plant - Honolulu, Hawaii -  Phone:  808-284-2740
   + http://hawaiidakine.com + http://freebsdinfo.org +
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"All that's really worth doing is what we do for others."- Lewis Carrol