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dockernfs

invalid argument for "--mount" flag: unexpected key 'addr'

I want to use docker nfs volume.

What I have tried:

1. Create a volume first then use it, it's OK

docker volume create --driver local --opt type=nfs --opt o=nfsvers=4,addr=10.192.244.109 --opt device=:/var/lib/lava/dispatcher/tmp my1
docker run -it --rm --name nfs-test -v my1:/data alpine sh

2. Directly use volume when docker run, it's also OK

docker run -it --rm --name nfs-test --mount type=volume,volume-driver=local,dst=/data,volume-opt=type=nfs,volume-opt=device=:/var/lib/lava/dispatcher/tmp,"volume-opt=o=addr=10.192.244.109" alpine sh

The problem happens when I want to specify nfsvers=4 in docker run:

# docker run -it --rm --name nfs-test --mount type=volume,volume-driver=local,dst=/data,volume-opt=type=nfs,volume-opt=device=:/var/lib/lava/dispatcher/tmp,"volume-opt=o=nfsvers=4,addr=10.192.244.109" alpine sh
invalid argument "type=volume,volume-driver=local,dst=/data,volume-opt=type=nfs,volume-opt=device=:/var/lib/lava/dispatcher/tmp,volume-opt=o=nfsvers=4,addr=10.192.244.109" for "--mount" flag: unexpected key 'addr' in 'addr=10.192.244.109'
See 'docker run --help'.

You could see Item1 shows we could specify nfs version when use nfs volume, while Item2 shows we could directly use nfs volume within docker run without pre-create a volume.

But, how I could specify nfs version when directly use docker run? What's the correct format here?

Solution

  • This works for me:

    --mount 'type=volume,dst=/data,volume-driver=local,volume-opt=type=nfs,volume-opt=device=:/var/lib/lava/dispatcher/tmp,"volume-opt=o=addr=10.192.244.109,rw,nfsvers=4"'

    Seems like the argument parser is picky with the quotes. It is parsed as an extra argument then. Alternately you can use ..,volume-opt=o=nfsvers=4,volume-opt=o=addr=10.192.244.109