[SATLUG] RAID5 Recovery - Reassembly Commencing!

Samuel Leon satlug at net153.net
Wed Aug 26 22:56:51 CDT 2009


It is supposed to be fixed in this version.  One possibility is to 
re-create the array using the create command.  Do you remember the EXACT 
parameters that you used to create this array?

Would look something like:

mdadm --create /dev/md0 --level=5 --chunk=128 --raid-disks=4  /dev/sde1 
/dev/sda1 /dev/sdb1 /dev/sdc1

If that is correct we would have to recreate it with:
mdadm --create /dev/md0 --assume-clean --level=5 --chunk=128 
--raid-disks=4  /dev/sde1 /dev/sda1 missing /dev/sdc1

Sorta what the guy did here: 
http://ubuntuforums.org/showthread.php?t=1061700

Sam
David Labens wrote:
> root at RCH-SERVER:/# aptitude show mdadm
> Package: mdadm
> State: installed
> Automatically installed: no
> Version: 2.6.7-3ubuntu8
> Priority: optional
> Section: admin
> Maintainer: Ubuntu Core Developers <ubuntu-devel-discuss at lists.ubuntu.com>
> Uncompressed Size: 655k
> Depends: libc6 (>= 2.8~20080505), debconf (>= 1.4.72), lsb-base (>= 3.1-6), udev
>          (>= 113-0ubuntu1), initramfs-tools (>= 0.85eubuntu24)
> Recommends: mail-transport-agent, module-init-tools
> Conflicts: mdctl (< 0.7.2), raidtools2 (< 1.00.3-12.1)
> Replaces: mdctl
> Description: tool to administer Linux MD arrays (software RAID)
>  The mdadm utility can be used to create, manage, and monitor MD (multi-disk)
>  arrays for software RAID or multipath I/O.
> 
>  This package automatically configures mdadm to assemble arrays during the
>  system startup process. If not needed, this functionality can be disabled.
> Homepage: http://neil.brown.name/blog/mdadm
> 
> root at RCH-SERVER:/#


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