Hello Unix Community:
My task to figure out how to add a 20G volume to an existing EBS Array (RAID0) at AWS.
I haven't been told that growing the existing volumes isn't an option, or adding another larger volume to the existing array is the way to go. The client's existing data-store is growing fast and he needs more space.
The boss said "Add".... but I am free to conceptualize some solutions he may not have thought of.
I have RTFM'd today for about 3 hours and came to these 2 possibilities. Add or grow...
After a cursory review (and some in depth reading) I am uncertain, so I have to ask
is "mdadm --incremental --rebuild --run --scan" destructive to data or will it simply incorporate the new volume into the designated mdX?
-I, --incremental
Add a single device into an appropriate array, and possibly start the array.
"Possibly start the array" implies that it is not started, but what if the array is already started?
I further wonder if I can just create a new volume and edit the /etc/mdadm/mdadm.conf
and --scan and/or --rebuild and if that would be destructive?
Thank you for your time.
Edit: Solved. See How to grow an EBS Array at AWS