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From "Jie Yu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MESOS-7306) Support mount propagation for host volumes.
Date Tue, 25 Jul 2017 23:53:00 GMT

     [ https://issues.apache.org/jira/browse/MESOS-7306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jie Yu updated MESOS-7306:
--------------------------
    Description: 
Currently, all mounts in a container are marked as 'slave' by default. However, for some cases,
we may want mounts under certain directory in a container to be propagate back to the root
mount namespace. This is useful for the case where we want the mounts to survive container
failures.

See more documentation about mount propagation in:
https://www.kernel.org/doc/Documentation/filesystems/sharedsubtree.txt

Given mount propagation is very hard for users to understand, probably worth limiting this
to just host volumes because we only see use case for that at the moment.

Some relevant discussion can be found here:
https://github.com/kubernetes/community/blob/master/contributors/design-proposals/propagation.md

  was:
Currently, all mounts in a container are marked as 'slave' by default. However, for some cases,
we may want mounts under certain directory in a container to be propagate back to the root
mount namespace. This is useful for the case where we want the mounts to survive container
failures.

See more documentation about mount propagation in:
https://www.kernel.org/doc/Documentation/filesystems/sharedsubtree.txt

Given mount propagation is very hard for users to understand, probably worth limiting this
to just host volumes because we only see use case for that at the moment.


> Support mount propagation for host volumes.
> -------------------------------------------
>
>                 Key: MESOS-7306
>                 URL: https://issues.apache.org/jira/browse/MESOS-7306
>             Project: Mesos
>          Issue Type: Improvement
>          Components: containerization
>            Reporter: Jie Yu
>              Labels: mesosphere, storage
>
> Currently, all mounts in a container are marked as 'slave' by default. However, for some
cases, we may want mounts under certain directory in a container to be propagate back to the
root mount namespace. This is useful for the case where we want the mounts to survive container
failures.
> See more documentation about mount propagation in:
> https://www.kernel.org/doc/Documentation/filesystems/sharedsubtree.txt
> Given mount propagation is very hard for users to understand, probably worth limiting
this to just host volumes because we only see use case for that at the moment.
> Some relevant discussion can be found here:
> https://github.com/kubernetes/community/blob/master/contributors/design-proposals/propagation.md



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