Open peterbuga opened 1 year ago
@peterbuga can you provide a link to docker-compose documentation that references ":shared" as a mode for volume definition? I looked, but am unable to find a reference to that.
@Red5d thanks for looking into this, here's the reference https://docs.docker.com/storage/bind-mounts/#configure-bind-propagation
here's an example too on how I use this:
using this image https://hub.docker.com/r/mumiehub/rclone-mount/
I basically mount an external-folder inside the container and by using :shared
to the mount, the mounted folder inside container are accessible to the host (check also the example in the image documentation)
ps: i use the same principle with mergerfs
or other smb mounts
services:
rclone:
container_name: "rclone"
devices:
- "/dev/fuse:/dev/fuse"
entrypoint:
- "/init"
environment:
- ...
- ...
image: "mumiehub/rclone-mount"
ipc: "private"
logging:
driver: "json-file"
options: {}
restart: "unless-stopped"
security_opt:
- "apparmor:unconfined"
volumes:
- "rclone:/config"
- "/mnt/rclone:/mounts/rclone" <-- missing `:shared` here
hope it makes some sense now, cheers!
Ok, cool. Can you provide the output of "docker inspect" for a running container that's set up like that?
@Red5d I edited some of the important details but this should suffice I think
it's a different image used in this example https://hub.docker.com/r/mumiehub/smb-mount (a simpler one IMO) but the reported problem it's the same
[
{
"Id": "[container-id]",
"Created": "2023-02-09T08:04:32.562435577Z",
"Path": "/init",
"Args": [],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 7360,
"ExitCode": 0,
"Error": "",
"StartedAt": "2023-04-22T07:26:01.85491629Z",
"FinishedAt": "2023-04-22T07:18:35.076891998Z"
},
"Image": "sha256:a5263dd94b67d2856688163a117bf81b238f2db1362229d6e76b0f7a1d80e413",
"ResolvConfPath": "/var/lib/docker/containers/[container-id]/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/[container-id]/hostname",
"HostsPath": "/var/lib/docker/containers/[container-id]/hosts",
"LogPath": "/var/lib/docker/containers/[container-id]/[container-id]-json.log",
"Name": "/smb_mount",
"RestartCount": 0,
"Driver": "overlay2",
"Platform": "linux",
"MountLabel": "",
"ProcessLabel": "",
"AppArmorProfile": "unconfined",
"ExecIDs": null,
"HostConfig": {
"Binds": [
"/mnt/hostsmb:/mnt/smb:shared"
],
"ContainerIDFile": "",
"LogConfig": {
"Type": "json-file",
"Config": {}
},
"NetworkMode": "localnet",
"PortBindings": {},
"RestartPolicy": {
"Name": "unless-stopped",
"MaximumRetryCount": 0
},
"AutoRemove": false,
"VolumeDriver": "",
"VolumesFrom": [],
"ConsoleSize": [
0,
0
],
"CapAdd": [
"SYS_ADMIN",
"DAC_READ_SEARCH"
],
"CapDrop": null,
"CgroupnsMode": "host",
"Dns": [],
"DnsOptions": [],
"DnsSearch": [],
"ExtraHosts": null,
"GroupAdd": null,
"IpcMode": "private",
"Cgroup": "",
"Links": null,
"OomScoreAdj": 0,
"PidMode": "",
"Privileged": false,
"PublishAllPorts": false,
"ReadonlyRootfs": false,
"SecurityOpt": [
"apparmor:unconfined"
],
"UTSMode": "",
"UsernsMode": "",
"ShmSize": 67108864,
"Runtime": "runc",
"Isolation": "",
"CpuShares": 0,
"Memory": 0,
"NanoCpus": 0,
"CgroupParent": "",
"BlkioWeight": 0,
"BlkioWeightDevice": null,
"BlkioDeviceReadBps": null,
"BlkioDeviceWriteBps": null,
"BlkioDeviceReadIOps": null,
"BlkioDeviceWriteIOps": null,
"CpuPeriod": 0,
"CpuQuota": 0,
"CpuRealtimePeriod": 0,
"CpuRealtimeRuntime": 0,
"CpusetCpus": "",
"CpusetMems": "",
"Devices": null,
"DeviceCgroupRules": null,
"DeviceRequests": null,
"MemoryReservation": 0,
"MemorySwap": 0,
"MemorySwappiness": null,
"OomKillDisable": false,
"PidsLimit": null,
"Ulimits": null,
"CpuCount": 0,
"CpuPercent": 0,
"IOMaximumIOps": 0,
"IOMaximumBandwidth": 0,
"MaskedPaths": [
"/proc/asound",
"/proc/acpi",
"/proc/kcore",
"/proc/keys",
"/proc/latency_stats",
"/proc/timer_list",
"/proc/timer_stats",
"/proc/sched_debug",
"/proc/scsi",
"/sys/firmware"
],
"ReadonlyPaths": [
"/proc/bus",
"/proc/fs",
"/proc/irq",
"/proc/sys",
"/proc/sysrq-trigger"
]
},
"GraphDriver": {
"Data": {
"LowerDir": "/var/lib/docker/overlay2/e5578bdeee5cc0914a4f9913d4f8e7625313f5045210b5a77786bba4ecbb8eb9-init/diff:/var/lib/docker/overlay2/6e155261473e32c370a3761f1a150132a584eed5fbbef509299cdec2c04fa779/diff:/var/lib/docker/overlay2/c68cf5cfd1fb19f5405ef2a1e9935d837aa77c6c715ce892a25ee4daadc84125/diff:/var/lib/docker/overlay2/ab9538be86d0b6687675402ead127d72aca6c9e47490a7c0d3a7b3574202ccd0/diff",
"MergedDir": "/var/lib/docker/overlay2/e5578bdeee5cc0914a4f9913d4f8e7625313f5045210b5a77786bba4ecbb8eb9/merged",
"UpperDir": "/var/lib/docker/overlay2/e5578bdeee5cc0914a4f9913d4f8e7625313f5045210b5a77786bba4ecbb8eb9/diff",
"WorkDir": "/var/lib/docker/overlay2/e5578bdeee5cc0914a4f9913d4f8e7625313f5045210b5a77786bba4ecbb8eb9/work"
},
"Name": "overlay2"
},
"Mounts": [
{
"Type": "bind",
"Source": "/mnt/hostsmb",
"Destination": "/mnt/smb",
"Mode": "shared",
"RW": true,
"Propagation": "shared"
}
],
"Config": {
"Hostname": "smb_mount",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"REDACTED=values",
],
"Cmd": null,
"Image": "mumiehub/smb-mount",
"Volumes": {
"/mnt/smb": {}
},
"WorkingDir": "",
"Entrypoint": [
"/init"
],
"OnBuild": null,
"Labels": {
"redacted": "values"
}
},
"NetworkSettings": {
"Bridge": "",
"SandboxID": "ce343a715b70c14352d035ff526704d1d8f43793004a8af486048b7c92a796e3",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {},
"SandboxKey": "/var/run/docker/netns/ce343a715b70",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "",
"Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "",
"IPPrefixLen": 0,
"IPv6Gateway": "",
"MacAddress": "",
"Networks": {
"localnet": {
"IPAMConfig": null,
"Links": null,
"Aliases": [
"53aa730eafb4",
"smb_mount"
],
"NetworkID": "46d88df4c18cdd7c6d75816d2835794e1e86c8328e973da0b36462841027ae80",
"EndpointID": "08c95e038913b2f5d74e5059cf08f9376d0fc9e66420f8ad1f2716814042dbb8",
"Gateway": "172.28.0.254",
"IPAddress": "172.28.0.10",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "02:42:ac:1c:00:0a",
"DriverOpts": null
}
}
}
}
]
An original container definition that has a shared mount ex:
/host/folder:/container/folder:shared
gives an output/host/folder:/container/folder