----- Message from neilb@xxxxxxx ---------
Date: Fri, 12 Oct 2007 09:51:08 +1000
From: Neil Brown <neilb@xxxxxxx>
Reply-To: Neil Brown <neilb@xxxxxxx>
Subject: Re: Help RAID5 reshape Oops / backup-file
To: Nagilum <nagilum@xxxxxxxxxxx>
Cc: linux-raid@xxxxxxxxxxxxxxx
On Thursday October 11, nagilum@xxxxxxxxxxx wrote:Ok, after looking in "Grow.c" I can see that the backup file is removed once the critial section has passed: if (backup_file) unlink(backup_file); printf(Name ": ... critical section passed.\n"); Since I had passed that point I'll try to find out where Grow_restart() stumbles. By looking at it I'm not even sure it's able to "resume" and not just restart. :-/It 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 neilb@xxxxxxx ----- 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 # # / |/ /__ ____ _(_) /_ ____ _ nagilum@xxxxxxxxxxx \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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