(original article)

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

22 February 2010, 00:03 UTC

- yes, only 1TB of the new device will be used. md doesn't need to be told any special for this to happen.

- similarly, lvm will only be able to see 1TB of extra data.

Providing your kernel is v2.6.21 or more recent you should not need to reboot. If your kernel is older than that, you will need a new kernel.