ad0: WARNING - WRITE_DMA interrupt was seen but timeout fired LBA=21267353

[Søren Schmidt]

Drew Broadley wrote:
> I am getting a slightly similar error but on the other end, (READ)
> 
> May 11 13:01:34 taz kernel: ad0: FAILURE - READ_DMA 
> status=51<READY,DSC,ERROR> error=40<UNCORRECTABLE> LBA=4818191
> 
> Is this possibly a result of a bad hdd sector ?

This is not semilar :) this is a genuine bad sector on the disk. You 
could try to write to that sector and hope it gets remapped by the 
drive. If more shows up (try smartctl to get SMART status of the drive) 
it might be time to backup :)


-- 
-Søren