Hi, I'm having a problem where in random one of my disks shuts down and is disconnected from the linux kernel. In other words I have to reboot the system or physically unplug/replug the disk to get it to work again. I will provide my configuration: SuperMicro SC-216 chassis (24 bay 2,5" disks) 24x Seagate ST9500420AS 500Gb 7200 RPM Hard Drives 3x SuperMicro AOC-SAT2-MV8 (SATA Controller using the sata_mv kernel driver) I use Debian Lenny 5.0 and kernel: linux-image-2.6.30-bpo.2-amd64 (2.6.30-8~bpo50+1) from the backports repository. The symptom is that after a while of operation a disk is shut down and kicked out of a RAID set. It doesn't matter if there is load or not on the system. The logging says: sd 11:0:0:0: [sdk] Unhandled error code sd 11:0:0:0: Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK sd 11:0:0:0: end_request: I/O error, dev sdk, sector 0 In this case sdk, but it happens to all disks. Then the disk is not readable by the system anymore. When I check the disk for errors (badblocks/smart) in another system it doesn't give any errors. I only have this with 2,5" systems. Is this a sata_mv problem? A disk problem? or anything else? I can provide more info if needed. Kind regards, Caspar Smit -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html