Using external data store in windows fails

[chavolla]

When using the option to mount a volume for data storage, cassandra is not able to wite logs and stops. The instruction used is

docker run --name myCass2 --rm -v //c/cassandra_storage:/var/lib/cassandra -it cassandra:2.2

and the error:

ERROR 23:05:11 Exiting due to error while processing commit log during initialization. org.apache.cassandra.io.FSWriteError: java.io.IOException: Invalid argument

I tried with Cassandra 2.2 and 3.3 and it is the same. Using store inside the image woks perfectly

[yosifkit]

I think with the most recent change we need to chown/chmod the logs folder in the Dockerfile. Also the default with docker-machine is to only share the Users/ directory, so the bind mount will have to use that and will probably need --user similar to #48 (comment)

[chavolla]

got the latest version and just tried as indicated in the link, but no luck so far. Tried
docker run --name myCass2 --rm -v //c/cassandra_storage:/var/lib/cassandra --user 1000:50 -it cassandra:latest
The error remains, not sure if I should try a different user or different mounting path

[tianon]

We do chown and chmod in the Dockerfile (as of #48), so if this isn't fixed now, I don't think there's actually anything we can realistically do about it. It might be that Cassandra doesn't support the kind of filesystem access vboxsf provides. It might be possible using Docker for Windows (given that it uses an alternate file-sharing implementation that's more forgiving about permissions issues), but it's hard to say for sure without testing it. Sorry!