I’ve mounted some folders inside a container on TrueNAS Scale 25.10, but I need to make them writeable. Is this possible? Alternately, is there a way to copy files into/out of a container from the primary shell?
Are you talking about directly writing to folders inside a container, say inside a docker container? In general that’s a bad idea, because those containers can be destroyed and recreated and then the data inside the container is reset.
One way to do this is to map the folders inside the container that you want to write to (or read from) to a folder outside of your container. I do this with all my docker containers, e.g. to make sure that the config data survives a recreation of the container. (Though I haven’t migrated those docker containers to TrueNAS yet, so this is more of a general comment.)
If that’s not what you mean, then you need to explain your scenario a bit more in detail.
I’m referring to LXC Containers in TrueNAS Scale. I dug a bit further and discovered this note which has solved my issue