Note
Both
overlay
andoverlay2
are currently unsupported onbtrfs
or any Copy on Write filesystem and should only be used overext4
partitions.
As Docker doesn’t support using the overlay2
driver on top of btrfs
, it looks like the recommendation from the launcher tool is the extent of your options here. That is, continue running Discourse on a system where Docker is backed by ext4
or modify launcher
to ignore the storage driver and hope for the best.
Commenting out (prepending # to) the exit 1
line in the following lines of the launcher
script with your preferred text editor will achieve the latter if you want to take that route:
Considering “Other storage drivers are known to be problematic” though, I wouldn’t recommend doing that.