ad0: TIMEOUT - READ_DMA retrying (2 retries left) LBA=207594611

[Søren Schmidt]

DanGer wrote:

> I'm getting this errors too on 5.2.1, so I don't know what's going on.
> The HDD is about 3 a 2 months old and not under big load.
> And my box uses to freeze because of these errors...

> ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=161995103
> ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=3609119
> ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=3610303
> ad0: WARNING - WRITE_DMA UDMA ICRC error (retrying request) LBA=21064831
> ad0: WARNING - WRITE_DMA UDMA ICRC error (retrying request) LBA=21064831
> ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=3941919
> ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=3942047
> ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=3942751
> ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=3942751
> ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=3943263
> ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=3943263
> ad0: FAILURE - READ_DMA status=51<READY,DSC,ERROR> error=84<ICRC,ABORTED> LBA=3943263
> ad0: WARNING - WRITE_DMA UDMA ICRC error (retrying request) LBA=21064383
> ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=3767239
> ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=3767063
> ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=3767063
> ad0: FAILURE - READ_DMA status=51<READY,DSC,ERROR> error=84<ICRC,ABORTED> LBA=3767063

You are having massive ICRC problems which are different and most likely 
due to bad cables/connectors or cables that are turned around (blue 
connector at controller, black/grey at devices), or it can be a 
weak/overloaded PSU.

-Søren