Can someone tell me if I'm on the right track? I've now noticed the following: # ~/mdadm-2.6.3/mdadm -v -A /dev/md0 /dev/sd[d-e] mdadm: looking for devices for /dev/md0 mdadm: /dev/sdd is identified as a member of /dev/md0, slot -1. mdadm: /dev/sde is identified as a member of /dev/md0, slot -1. mdadm: No suitable drives found for /dev/md0
This "slot -1" is also visible in the examine output:
# mdadm -E /dev/sdd
/dev/sdd:
Magic : a92b4efc
Version : 00.91.00
UUID : 25da80a6:d56eb9d6:0d7656f3:2f233380
Creation Time : Sat Sep 15 21:11:41 2007
Raid Level : raid5
Device Size : 488308672 (465.69 GiB 500.03 GB)
Array Size : 1953234688 (1862.75 GiB 2000.11 GB)
Raid Devices : 5
Total Devices : 5
Preferred Minor : 0
Reshape pos'n : 872095808 (831.70 GiB 893.03 GB)
Delta Devices : 2 (3->5)
Update Time : Mon Oct 8 23:59:27 2007
State : clean
Active Devices : 5
Working Devices : 5
Failed Devices : 0
Spare Devices : 0
Checksum : f42505b9 - correct
Events : 0.470134
Layout : left-symmetric
Chunk Size : 16K
Number Major Minor RaidDevice State
this 5 8 48 -1 spare /dev/sdd
0 0 8 0 0 active sync /dev/sda
1 1 8 16 1 active sync /dev/sdb
2 2 8 32 2 active sync /dev/sdc
3 3 8 64 3 active sync /dev/sde
4 4 8 48 4 active sync /dev/sdd
So can someone confirm that is the likely source of my problem?
And hopefully - if that is indeed the problem - someone can tell me
how to update that slot number?
Thanks,
Alex.
----- Message from [EMAIL PROTECTED] ---------
Date: Fri, 12 Oct 2007 08:43:28 +0200
From: Nagilum <[EMAIL PROTECTED]>
Reply-To: Nagilum <[EMAIL PROTECTED]>
Subject: Re: Help RAID5 reshape Oops / backup-file
To: Neil Brown <[EMAIL PROTECTED]>
Cc: linux-raid@vger.kernel.org
----- Message from [EMAIL PROTECTED] --------- Date: Fri, 12 Oct 2007 09:51:08 +1000 From: Neil Brown <[EMAIL PROTECTED]> Reply-To: Neil Brown <[EMAIL PROTECTED]> Subject: Re: Help RAID5 reshape Oops / backup-file To: Nagilum <[EMAIL PROTECTED]> Cc: linux-raid@vger.kernel.orgIt isn't a problem that you didn't specify a backup-file. If you don't, mdadm uses some spare space on one of the new drives. After the critical section has passed, the backup file isn't needed any longer. The problem is that mdadm still wants to find and recover from it. I throughly tested mdadm restarting from a crash during the critical section, but it looks like I didn't properly test restarting from a later crash. I think if you just change the 'return 1' at the end of Grow_restart to 'return 0' it should work for you. I'll try to get this fixed properly (and tested) and release a 2.6.4. NeilBrown----- End message from [EMAIL PROTECTED] ----- Thanks, I changed Grow_restart as suggested, now I get: nas:~/mdadm-2.6.3# ./mdadm -A /dev/md0 /dev/sd[a-e] mdadm: /dev/md0 assembled from 3 drives and 2 spares - not enough to start the array. nas:~/mdadm-2.6.3# cat /proc/mdstat Personalities : [raid6] [raid5] [raid4] md0 : inactive sda[0] sde[6] sdd[5] sdc[2] sdb[1] 2441543360 blocks unused devices: <none> which is similar to what the old mdadm is telling me. I'll try to find out where it gets the idea these are spares.. Would it be a good idea to update to vanilla 2.6.23 instead of running Debian Etch's 2.6.18-5? If there is anything I can do to help with v2.6.4 let me know! Thanks, Alex. ======================================================================== # _ __ _ __ http://www.nagilum.org/ \n icq://69646724 # # / |/ /__ ____ _(_) /_ ____ _ [EMAIL PROTECTED] \n +491776461165 # # / / _ `/ _ `/ / / // / ' \ Amiga (68k/PPC): AOS/NetBSD/Linux # # /_/|_/\_,_/\_, /_/_/\_,_/_/_/_/ Mac (PPC): MacOS-X / NetBSD /Linux # # /___/ x86: FreeBSD/Linux/Solaris/Win2k ARM9: EPOC EV6 # ======================================================================== ---------------------------------------------------------------- cakebox.homeunix.net - all the machine one needs..
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