In the continuing saga of my Pi 4B file server experiment, I have discovered that btrfs from the Raspbian btrfs-progs package can't make snapshots. The result
Code: Select all
# btrfs sub snap blue_root blue_root-snap
ERROR: Could not statfs: Value too large for defined data type
seems to indicate that instead of statfs64, the older system calls were inadvertently used. Note that statfs64 has been standard since kernel versions 2.6 and, if my memory is correct, btrfs snapshots used to work.
In light of the additional fact detailed here
that Ethernet on my 4B doesn't work when connected to my gigabit switch, this file server experiment has not been going well.