Comment 14 for bug 120375

Searching, I found out that latest release is 2.6.4 - but no option in ubuntu repository (yet?).

ANNOUNCE: mdadm 2.6.4 - A tool for managing Soft RAID under Linux
From: Neil Brown <email address hidden>
To: <email address hidden>
Subject: ANNOUNCE: mdadm 2.6.4 - A tool for managing Soft RAID under Linux
Date: Fri, 19 Oct 2007 16:06:29 +1000
Message-ID: <email address hidden>
Archive-link: Article, Thread

I am pleased to announce the availability of
   mdadm version 2.6.4

It is available at the usual places:
   http://www.cse.unsw.edu.au/~neilb/source/mdadm/

Does some of the following changes applies to our bug?

Changes Prior to 2.6.4 release
    - Make "--create --auto=mdp" work for non-standard device names.
    - Fix restarting of a 'reshape' if it was stopped in the middle.
    - Fix a segfault when using v1 superblock.
    - Make --write-mostly effective when re-adding a device to an array.
    - Various minor fixes

Changes Prior to 2.6.3 release
    - allow --write-behind to be set for --grow.
    - When adding new disk to an array, don't reserve so much bitmap
        space that the disk cannot store the required data. (Needed when
 1.x array was created with older mdadm).
    - When adding a drive that was a little too small, we did not get
 the correct error message.
    - Make sure that if --assemble find an array in the critical region
 of a reshape, and cannot find the critical data to restart the
 reshape, it gives an error message.
    - Fix segfault with '--detail --export' and non-persistent
        superblocks.
    - Various manpage updates.
    - Improved 'raid4' support (--assemble, --monitor)
    - Option parsing fixes w.r.t -a
    - Interpret "--assemble --metadata=1" to allow any version 1.x
 metadata, and be more specific in the "metadata=" message printed
 with --examine --brief
    - Fix spare migration in --monitor.

Changes Prior to 2.6.2 release
    - --fail detached and --remove faulty can be used to fail and
 remove devices that are no longer physically present.
    - --export option for --detail or present information in a format
 that can be processed by udev.
    - fix internal bitmap allocation problems with v1.1, v1.2 metadata.
    - --help now goes to stdout so you can direct it to a pager.
    - Various manpage updates.
    - Make "--grow --add" for linear arrays really work.
    - --auto-detect to trigger in-kernel autodetect.
    - Make return code for "--detail --test" more reliable. Missing
 devices as well as failed devices cause an error.