I am using BTRFS and have 4 nvme drives in a pool (raid 0). BTRFS is using all of the available space on all of the drives. I want to shrink the btrfs partition on each drive so that I have a bit of space free. How can I shrink it on the drives themselves to get an unallocted partition as in gparted it always shows up as one partition still when using sudo btrfs filesystem resize 4:-128G /
Is it Btrfs on Linux RAID (mdadm), or Btrfs RAID? And in case of Btrfs RAID, directly on the raw disks or on partitions? Because if it’s not on partitions you can still shrink the filesystem, but the freed space will not be usable, and also GParted can’t handle that afaik.