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 sdc1 sdd1 sde1 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?