On 18/08/2014 21:26, Ram Ramesh wrote:
I had a recent disk failure in my 4x2TB raid6 and as a temporary fix I added a 4tb drive to prevent the drive from being degraded while I researched for a new drive. Now that I have purchased a new drive, I am wondering if it is ok to simply dd the first 2tb of the 4tb drive to replace the drive. I am asking because my case/motherboard does not have another HD slot to add the new disk in parallel with raid6. I was thinking of shutting down the machines, moving the 4tb memmebr and the new drive to another machine, making image copy (only 2tb), and putting the 2tb drive back in the original machine and rebooting. Will this work?
I think it should work, if metadata is 1.1 or 1.2 . I'm not sure if it is 1.0 . You can also attach it via USB with an adapter, and do a replace (look up "want_replacement") then shutdown, swap the drives, and turn on again.
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