Vaibhav Khanduja created MESOS-3392:
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Summary: Enhanced option for Docker cli volume plugin
Key: MESOS-3392
URL: https://issues.apache.org/jira/browse/MESOS-3392
Project: Mesos
Issue Type: Improvement
Components: docker, slave
Affects Versions: 0.25.0
Environment: Docker containers
Reporter: Vaibhav Khanduja
Priority: Minor
Docker with 1.8 started to support volume plugin
(http://blog.docker.com/2015/06/extending-docker-with-plugins/) . This support
has enhanced cli for option "volume", where in an non-absolute name of the
volume can be provided. The name is passed by Docker daemon to backed plugin in
return for a mount point or absolute path of the volume.
The code in src/docker.cpp, for each volume provided it checks for the host
path which in above case if not starting with "/" gets prefixed with "sandbox"
location on the host. This breaks the volume plugin integration. The only
option now is to pass volume name as another key value parameter.
The code in docker.cpp:
............................
if (volume.has_host_path()) {
if (!strings::startsWith(volume.host_path(), "/")) {
// Support mapping relative paths from the sandbox.
volumeConfig =
path::join(sandboxDirectory, volume.host_path()) + ":" + volumeConfig;
} else {
volumeConfig = volume.host_path() + ":" + volumeConfig;
}
...............
should probably be enhanced to check if volume plugin option is provided and
pass on the parameter provided to the plugin.
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