Hi All, Thanks very much for the two people who helped me figure out my problem with autostarting RAIDs yesterday. I have my system up and booting off the SCSI RAID but cannot get a second RAID built out of new 120GB Seagate IDE drives. The drives seem to work fine, but a power failure caused the RAID to need rebuilding, and the drives don't seem to be able to handle the sustained I/O. After about 15 minutes of rebuilding, the rebuild fails due to drive errors. I've tried connecting the drives to both my HPT366 controller and the primary IDE controller with the same results. I saw that some of the messages were DMA related to I tried using hdparm to turn DMA off on the drives, and other than making it take approx 10x as long to fail, no big change. This is a RedHat9 box fully updated running the latest kernel: 2.4.20-30.9smp. Is this certainly a failure in the drive, or is there anything else I can try before going through all the hassles of getting another drive? Does it look like it's just hdb that's bad? Contents of messages during the failure are at the end of the message. Thanks in advance! Please copy me off the list as I'm not subscribed. David <with DMA turned on> Apr 1 11:08:29 celeri kernel: md: syncing RAID array md2 Apr 1 11:08:29 celeri kernel: md: minimum _guaranteed_ reconstruction speed: 100 KB/sec/disc. Apr 1 11:08:29 celeri kernel: md: using maximum available idle IO bandwith (but not more than 10000 KB/sec) for reconstruction. Apr 1 11:08:29 celeri kernel: md: using 124k window, over a total of 117218176 blocks. Apr 1 11:08:30 celeri kernel: md: hdb1 [events: 00000001]<6>(write) hdb1's sb offset: 117218176 Apr 1 11:26:35 celeri kernel: hdb: dma_intr: status=0x51 { DriveReady SeekComplete Error } Apr 1 11:26:35 celeri kernel: hdb: dma_intr: error=0x40 { UncorrectableError }, LBAsect=21622756, high=1, low=4845540, sector=21622624 Apr 1 11:26:35 celeri kernel: end_request: I/O error, dev 03:41 (hdb), sector 21622624 Apr 1 11:26:35 celeri kernel: raid1: Disk failure on hdb1, disabling device. Apr 1 11:26:35 celeri kernel: ^IOperation continuing on 1 devices Apr 1 11:26:35 celeri kernel: raid1: mirror resync was not fully finished, restarting next time. Apr 1 11:26:35 celeri kernel: md: updating md2 RAID superblock on device Apr 1 11:26:35 celeri kernel: md: hdd1 [events: 00000002]<6>(write) hdd1's sb offset: 117218176 Apr 1 11:26:35 celeri kernel: md: recovery thread got woken up ... Apr 1 11:26:35 celeri kernel: md2: no spare disk to reconstruct array! -- continuing in degraded mode Apr 1 11:26:35 celeri kernel: md: (skipping faulty hdb1 ) <without DMA> similar lines other than the following three: Apr 1 13:23:53 celeri kernel: APIC error on CPU0: 08(02) Apr 1 15:55:02 celeri kernel: hdb: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error } Apr 1 15:55:02 celeri kernel: hdb: read_intr: error=0x40 { UncorrectableError }, LBAsect=21622751, high=1, low=4845535, sector=21622688 ===== david_nedved@yahoo.com __________________________________ Do you Yahoo!? Yahoo! Small Business $15K Web Design Giveaway http://promotions.yahoo.com/design_giveaway/ - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html