Filesystem problems at boot and shutdown?

Thu Nov 27 08:23:32 PST 2008

>>>> Nov 26 20:48:11 server kernel: ad4: WARNING - WRITE_DMA48 UDMA ICRC error
>>>> (retrying request) LBA=1364750271
>>>> Nov 26 20:48:11 server kernel: ad4: FAILURE - WRITE_DMA48
>>>> status=51<READY,DSC,ERROR> error=4<ABORTED> LBA=1364750271
>>>> Nov 26 20:48:11 server kernel:
>>>> g_vfs_done():ad4s1g[WRITE(offset=682932174848, length=131072)]error = 5

cabling problems or disk overheating (or controller) or failed disk.

ICRC error suggest that it's rather cabling problem.