I have a multi-device BTRFS volume and I would like to re-size one of the partitions. To be more precise:
My /home is spread across two separate BTRFS partitions. I shrunk down another partition to allow one of the BTRFS partitions to grow. One approach that I know of and have used to create a new BTRFS partition and add that to the pool.
A cleaner approach would be to grow the BTRFS partition, using the unallocated space I created. I would just pop in a GParted live CD and grow the partition itself, instead of creating a totally new partition on the unallocated space.
The question is: is this safe? Will the files that are already on the partition be found by the OS? Will the OS still recognize the partition as being part of the multi-device volume?