Hi! I'm not sure if this is the correct list, as my problem is about sata and not SCSI... We run a debian push mirror (debian.tu-bs.de) and have recently switched from a scsi hardware raid to a SATA linux software raid. 3 Maxtor Maxline III are attached to a Promise SATA 300 TX4. It worked well for about one month while we were testing it with low load parallel to the SCSI raid and it worked flawlessly. One week ago, we move all our data over to the software raid. Since about 4 days we get scsi errors about once per day. libata reports an error about every 30 seconds and after about one hour, the disk is dropped from the array. It continues in degraded mode without further problems until another disk shows errors. After rebooting the server, all disks are accessible again and i can perform a resync (which completes without errors). Then sata works without problems until the same errors appear again. This happens with a 2.6.13.4, today we tried 2.6.14.3, but it froze completely after 22 hours. So we only have logs when the error happend with 2.6.13.4 :( This shows up in the logs: Dec 2 17:01:05 apmsrv01 kernel: ata2: command timeout Dec 2 17:01:05 apmsrv01 kernel: ATA: abnormal status 0xFF on port 0xF881229C Dec 2 17:01:05 apmsrv01 kernel: ata2: status=0xff { Busy } Dec 2 17:01:05 apmsrv01 kernel: SCSI error : <2 0 0 0> return code = 0x8000002 Dec 2 17:01:05 apmsrv01 kernel: sdd: Current: sense key: Aborted Command Dec 2 17:01:05 apmsrv01 kernel: Additional sense: Scsi parity error Dec 2 17:01:05 apmsrv01 kernel: end_request: I/O error, dev sdd, sector 57303239 The sector differs each time, but the rest is always the same. What could cause this error? Which information should i try to gather? Thanks, -- Jan Lübbe <jluebbe@xxxxxxxxx> http://sicherheitsschwankung.de gpg-key 1024D/D8480F2E 2002-03-20 fingerprint 1B25 F91F 9E7B 5D4F 1282 02D6 8A83 8BE4 D848 0F2E - : 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