Resizing a LUKS-backed BTRFS RAID1 filesystem

Hi. After a series of hardware upgrades, I finally have 2x 2TB SDD for data on my NAS ! However, they are still configured with ~900GiB data partitions, and today it is time to expand it! Initial state The current disk layout is: # fdisk -l /dev/sda Disk /dev/sda: 1.82 TiB, 2000398934016 bytes, 3907029168 sectors Disk model: PNY CS900 2TB SS Sector size (logical/physical): 512 bytes / 512 bytes…