> -----Original Message----- > From: linux-raid-owner@vger.kernel.org > [mailto:linux-raid-owner@vger.kernel.org]On Behalf Of Neil Brown > Sent: Tuesday, May 21, 2002 6:10 AM > To: cwebster@ec.rr.com > Cc: linux-raid > Subject: Re: Software RAID Stopped Working With Aurora Kernel > Before I could react, Tom Callaway had applied the patch and placed a rebuilt binary rpm on the Aurora site. This looks much more like normal. The device sequence, by raid device number, looks right now. The reason it doesn't match /etc/raidtab exactly is because I conducted failure/fail-over tests after placing this RAID in service. The tests involved rendering one, then two of the devices inoperable (/dev/sdc1) and verify that the raid would pick-up the spare (/dev/sdf1) on the first failure and run in degraded mode following the second. After bringing the simulated failures back on-line I didn't bother to re-order the devices. I've again appended the output from "mdadm --examine --sparc2.2" for each device to the end of this message for your reference. Just a couple of questions before I proceed: 1. Is there anything I need to change in "/etc/raidtab"? - Should it match the actual configuration? - Differences between raidtools 0.90-6 and 1.00.2-1.3 2. Will the "Version" number in the superblock automatically be updated when I start the RAID? Thank you very much for seeing this through with me! --Cal Webster P.S. You need not cc: my email address. I'm a list member so I get duplicate messages. ================== Things to do next: ================== ## Update the superblock: mdadm --examine --sparc2.2update /dev/sda1 ## Re-check after updating: mdadm --examine --sparc2.2 /dev/sda1 ## Assemble the array (use raid device order): ## Only assemble active devices, not spare. mdadm --assemble /dev/md0 /dev/sda1 /dev/sdb1 /dev/sdf1 /dev/sdd1 /dev/sde1 ## Start the RAID raidstart /dev/md0 ## Verify that raid is running cat /proc/mdstat ## Verify that data is intact ================================================================= --------[ mdadm --examine --sparc2.2 /dev/sda1 ]-------- /dev/sda1: Magic : a92b4efc Version : 00.90.00 UUID : 494dd54f:15e7b548:90bae5c3:532ac910 Creation Time : Thu Apr 26 12:29:38 2001 Raid Level : raid5 Device Size : 17681664 (16.86 GiB 18.15 GB) Raid Devices : 5 Total Devices : 6 Preferred Minor : 0 Update Time : Mon May 6 18:41:41 2002 State : clean, no-errors Active Devices : 5 Working Devices : 6 Failed Devices : 0 Spare Devices : 1 Checksum : 6515abae - correct --- adjusting superblock for 2.2/sparc compatability --- Events : 0.171 Layout : left-asymmetric Chunk Size : 128K Number Major Minor RaidDevice State this 4 8 1 0 active sync /dev/sda1 0 0 8 17 1 active sync /dev/sdb1 1 1 8 81 2 active sync /dev/sdf1 2 2 8 49 3 active sync /dev/sdd1 3 3 8 65 4 active sync /dev/sde1 4 4 8 1 0 active sync /dev/sda1 5 5 8 33 5 /dev/sdc1 --------[ mdadm --examine --sparc2.2 /dev/sdb1 ]-------- /dev/sdb1: Magic : a92b4efc Version : 00.90.00 UUID : 494dd54f:15e7b548:90bae5c3:532ac910 Creation Time : Thu Apr 26 12:29:38 2001 Raid Level : raid5 Device Size : 17681664 (16.86 GiB 18.15 GB) Raid Devices : 5 Total Devices : 6 Preferred Minor : 0 Update Time : Mon May 6 18:41:41 2002 State : clean, no-errors Active Devices : 5 Working Devices : 6 Failed Devices : 0 Spare Devices : 1 Checksum : 6515abbb - correct --- adjusting superblock for 2.2/sparc compatability --- Events : 0.171 Layout : left-asymmetric Chunk Size : 128K Number Major Minor RaidDevice State this 0 8 17 1 active sync /dev/sdb1 0 0 8 17 1 active sync /dev/sdb1 1 1 8 81 2 active sync /dev/sdf1 2 2 8 49 3 active sync /dev/sdd1 3 3 8 65 4 active sync /dev/sde1 4 4 8 1 0 active sync /dev/sda1 5 5 8 33 5 /dev/sdc1 --------[ mdadm --examine --sparc2.2 /dev/sdc1 ]-------- /dev/sdc1: Magic : a92b4efc Version : 00.90.00 UUID : 494dd54f:15e7b548:90bae5c3:532ac910 Creation Time : Thu Apr 26 12:29:38 2001 Raid Level : raid5 Device Size : 17681664 (16.86 GiB 18.15 GB) Raid Devices : 5 Total Devices : 6 Preferred Minor : 0 Update Time : Mon May 6 18:41:41 2002 State : clean, no-errors Active Devices : 5 Working Devices : 6 Failed Devices : 0 Spare Devices : 1 Checksum : 6515abce - correct --- adjusting superblock for 2.2/sparc compatability --- Events : 0.171 Layout : left-asymmetric Chunk Size : 128K Number Major Minor RaidDevice State this 5 8 33 5 /dev/sdc1 0 0 8 17 1 active sync /dev/sdb1 1 1 8 81 2 active sync /dev/sdf1 2 2 8 49 3 active sync /dev/sdd1 3 3 8 65 4 active sync /dev/sde1 4 4 8 1 0 active sync /dev/sda1 5 5 8 33 5 /dev/sdc1 --------[ mdadm --examine --sparc2.2 /dev/sdd1 ]-------- /dev/sdd1: Magic : a92b4efc Version : 00.90.00 UUID : 494dd54f:15e7b548:90bae5c3:532ac910 Creation Time : Thu Apr 26 12:29:38 2001 Raid Level : raid5 Device Size : 17681664 (16.86 GiB 18.15 GB) Raid Devices : 5 Total Devices : 6 Preferred Minor : 0 Update Time : Mon May 6 18:41:41 2002 State : clean, no-errors Active Devices : 5 Working Devices : 6 Failed Devices : 0 Spare Devices : 1 Checksum : 6515abdf - correct --- adjusting superblock for 2.2/sparc compatability --- Events : 0.171 Layout : left-asymmetric Chunk Size : 128K Number Major Minor RaidDevice State this 2 8 49 3 active sync /dev/sdd1 0 0 8 17 1 active sync /dev/sdb1 1 1 8 81 2 active sync /dev/sdf1 2 2 8 49 3 active sync /dev/sdd1 3 3 8 65 4 active sync /dev/sde1 4 4 8 1 0 active sync /dev/sda1 5 5 8 33 5 /dev/sdc1 --------[ mdadm --examine --sparc2.2 /dev/sde1 ]-------- /dev/sde1: Magic : a92b4efc Version : 00.90.00 UUID : 494dd54f:15e7b548:90bae5c3:532ac910 Creation Time : Thu Apr 26 12:29:38 2001 Raid Level : raid5 Device Size : 17681664 (16.86 GiB 18.15 GB) Raid Devices : 5 Total Devices : 6 Preferred Minor : 0 Update Time : Mon May 6 18:41:41 2002 State : clean, no-errors Active Devices : 5 Working Devices : 6 Failed Devices : 0 Spare Devices : 1 Checksum : 6515abf1 - correct --- adjusting superblock for 2.2/sparc compatability --- Events : 0.171 Layout : left-asymmetric Chunk Size : 128K Number Major Minor RaidDevice State this 3 8 65 4 active sync /dev/sde1 0 0 8 17 1 active sync /dev/sdb1 1 1 8 81 2 active sync /dev/sdf1 2 2 8 49 3 active sync /dev/sdd1 3 3 8 65 4 active sync /dev/sde1 4 4 8 1 0 active sync /dev/sda1 5 5 8 33 5 /dev/sdc1 --------[ mdadm --examine --sparc2.2 /dev/sdf1 ]-------- /dev/sdf1: Magic : a92b4efc Version : 00.90.00 UUID : 494dd54f:15e7b548:90bae5c3:532ac910 Creation Time : Thu Apr 26 12:29:38 2001 Raid Level : raid5 Device Size : 17681664 (16.86 GiB 18.15 GB) Raid Devices : 5 Total Devices : 6 Preferred Minor : 0 Update Time : Mon May 6 18:41:41 2002 State : clean, no-errors Active Devices : 5 Working Devices : 6 Failed Devices : 0 Spare Devices : 1 Checksum : 6515abfd - correct --- adjusting superblock for 2.2/sparc compatability --- Events : 0.171 Layout : left-asymmetric Chunk Size : 128K Number Major Minor RaidDevice State this 1 8 81 2 active sync /dev/sdf1 0 0 8 17 1 active sync /dev/sdb1 1 1 8 81 2 active sync /dev/sdf1 2 2 8 49 3 active sync /dev/sdd1 3 3 8 65 4 active sync /dev/sde1 4 4 8 1 0 active sync /dev/sda1 5 5 8 33 5 /dev/sdc1 ================================================================= - 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