mdadm-2.6.3 was released 20th August 2007. Quote from its ChangeLog: 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.
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