Linux RAID0 - relocating member disk

Posted by qdot on Server Fault See other posts from Server Fault or by qdot
Published on 2011-07-11T21:01:39Z Indexed on 2012/09/20 21:41 UTC
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raid

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software-raid

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raid0

I've got an issue I would rather handle with the array online - I am using RAID0 for temporary video storage - data that is low-cost to restore, but that is used frequently.

The software array looks like this:

md1 : active raid0 sdb1[2] sdc1[3] sdd1[0] sde1[1]
      1953487616 blocks 64k chunks

I have another partition (sda1) in this system, that I want to use to replace sdc1 (The drives are of varying age, and sdc1 is definitely the slowest one, limiting the entire array's sequential read performance to only 300MB/s).

Is there a way to migrate the data from sdc1 to sda1 while the array is still online?

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