On Wed, 2009-11-04 at 11:01 +0000, Mark Whidby wrote: > John Rowe wrote: > >> Nov 4 10:36:31 terra kernel: sd 5:0:0:1: SCSI error: return code = 0x000b0000 > >> Nov 4 10:36:31 terra kernel: end_request: I/O error, dev sdq, sector 5858973568 > >> Nov 4 10:36:31 terra kernel: printk: 16 messages suppressed. > >> Nov 4 10:36:31 terra kernel: Buffer I/O error on device sdq, logical block 732371696 > >> Nov 4 10:36:31 terra kernel: sd 5:0:0:1: SCSI error: return code = 0x000b0000 > >> Nov 4 10:36:31 terra kernel: end_request: I/O error, dev sdq, sector 5858973568 > >> Nov 4 10:36:31 terra kernel: Buffer I/O error on device sdq, logical block 732371696 > >> Nov 4 10:36:32 terra kernel: sd 5:0:0:1: SCSI error: return code = 0x000b0000 > >> Nov 4 10:36:32 terra kernel: end_request: I/O error, dev sdq, sector 5858973688 > >> ... > >> Nov 4 10:36:33 terra kernel: sd 5:0:0:1: SCSI error: return code = 0x000b0000 > >> Nov 4 10:36:33 terra kernel: end_request: I/O error, dev sdq, sector 5858973688 > >> Nov 4 10:36:33 terra kernel: sd 5:0:0:1: SCSI error: return code = 0x000b0000 > >> Nov 4 10:36:33 terra kernel: end_request: I/O error, dev sdq, sector 5858973688 > >> Nov 4 10:36:33 terra kernel: sd 5:0:0:1: SCSI error: return code = 0x000b0000 > >> Nov 4 10:36:33 terra kernel: end_request: I/O error, dev sdq, sector 5858973568 > > > > It's looking horribly like a disk error: have you checked it? > > Try badblocks. > > That's what I thought originally but no matter which combination of 4 disks > I try to configure I always get these errors. Unless the box has been populated > with a whole batch of bad disks, I suppose. I thought that might be too easy, but it was worth a try. Does it follow any particular disk controller? Cable? John