On Sun, 2008-04-06 at 21:04 -0400, Wakko Warner wrote: > > From the message you posted, it looks as though there may be a problem > > with sda. > > It's working fine with /sys/block/sd[abc]/device/queue_depth = 1 (on boot up, > as stated before, it's 64) > > I performed the same copy again with queue_depth=1 after the array rebuilt. > It worked fine then. No errors. Actually, I'd say this is a signal for NCQ errors with the drive. I'm afraid only LSI would be able to say for certain, because the mptsas implements its NCQ handling in firmware. libata-core doesn't show any special workarounds for your device (ST3750640AS) but that doesn't mean there isn't a problem. If it's really an NCQ implementation issue, then clamping the queue depth to 1 is about the only fix, I'm afraid. James -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
