CIFS Volume in SWARM

Docker Hub
1

Hello, I am new to relatively new to containers/dockers. Currently I have a Swarm setup with three nodes (1 manager and 2 workers) and I am using volumes to mount external SMB/CIFS folders that contain music/movies for airsonic and emby amoong others.

I use the following procedure to create volumes:

docker volume create
–driver local
–opt type=cifs
–opt device=//xxx.xxx.x.xxx/share
–opt o=username=USER,password=PASS,file_mode=0775,dir_mode=0775,uid=xxxx,gid=xxx,vers=2.0
–name ANYNAME

All worked fine with volumes propagating without issues from the manager to the workers, but after upgrading to Portainer 2.5.1 with Docker engine 20.10.7 if I create a new volume the Options in the worker nodes are null instead of containing the options that were created

For example:

docker volume inspect xxx (New Volume)

    "CreatedAt": "2021-06-20T15:58:55-04:00",
    "Driver": "local",
    "Labels": {},
    "Mountpoint": "/var/lib/docker/volumes/xxx/_data",
    "Name": "xxx",
    "Options": null,
    "Scope": "local"

docker volume inspect media (old volume)

    "CreatedAt": "2021-03-01T16:14:09-03:00",
    "Driver": "local",
    "Labels": {},
    "Mountpoint": "/var/lib/docker/volumes/media/_data",
    "Name": "media",
    "Options": {
        "device": "//192.168.x.xxx/media",
        "o": "username=user,password=pass,file_mode=0775,dir_mode=0775,uid=1000,gid=100,vers=2.0",
        "type": "cifs"
    },
    "Scope": "local"

It only happen with new volumes created that are mounting shares from the same servers as before.

Any help would be appreciated.
Regards.

2

So you problem is particular to swarm networking with portainer, isn’t it?
Did you check wheter the behavior on the cli is still consistant to the previous docker-ce version?

3

Hello, same behavior in CLI. I don’t know what the problem might be.

Thanks

4

There is not much I can contribute.

Works flawless on 20.10.6 with this command:

docker volume create \
--driver local \
--opt type=cifs \
--opt device=//xxx.xxx.xxx.xxx/share \
--opt o=username=USER,password=PASS,uid=xxxx,gid=xxx,vers=3.0 \
ANYNAME
6

Hello I downgraded to 20.10.6 and the options on the nodes are “null”. Don’t know why the new volumes appear that way and the old volumes work fine.