Hello! I am considering to move my configuration in which I currently use two RAID5 arrays (3*2TB and 3*1TB) to one described in [1]. Specifically, make a 6*1TB RAID6 plus 3*1TB RAID5 consisting of 2TB drives' "tails". My question is: does mdadm support a simultaneous reshape, changing at once: 1) RAID5 to RAID6 2) number of devices from 3 to 6 3) individual device size from 2TB to 1TB Note that the user-accessible space after this reshape does not change, and remains at 4 TB. So is that supported? Will that require a backup file? Will that proceed particularly inefficiently/slowly? [1] http://www.linuxconfig.org/prouhd-raid-for-the-end-user -- With respect, Roman
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