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 Device Boot Start End Sectors Size Id Type /dev/sda1 * 2048 499711 497664 243M 83 Linux /dev/sda2 499712 43468799 42969088 20.5G 83 Linux /dev/sda3 43468800 1918322687 1874853888 894G 83 Linux # fdisk -

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