(original article)

Re: Converting RAID5 to RAID6 and other shape changing in md/raid

03 August 2010, 23:31 UTC

I think you have a simple error in your usage.

You used

mdadm --grow --raid-disks=4 /dev/md0 /mdadm.backupfile
but should use
mdadm --grow --raid-disks=4 /dev/md0 --backup-file /mdadm.backupfile



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