Okay, I’ll leave it running for a few days then. Otherwise I guess instead of a rpi4 with ssd it’ll need to be a rpi5 with ssd.
UPDATE:
Hours later and more reading later, I decided that I’ll try change the lxd container from using a btrfs storage pool, to using a zfs storage pool. Once done, it was able to progress past that point in about 5 minutes (whereas with btrfs it would hang for an hour or so before the workers would start failing).
It’s still building, however once it has finished and I’ve been able to successfully import the backup and get cloudflare SSL sorted, I’ll publish my migration from discourse docker running inside a scaleway, to discourse docker running inside a lxd container inside a raspberry pi 4 + ssd.
UPDATE 2: