namespace question?

[pingtoo]

Is there document for how namespace destruction, what will happen?

Specifically for mount namespace. I know it seem that when a mount namespace last process end, all mounts in that namespace seems got unmounted automatically. But I am not so sure so I would like to know if this actually documented somewhere as this is by design. I don't want to depend on a side effect where something could change later without explicit notification.

[zen_desu]

I think you have the right idea. Namespaces exist for processes, so once the process dies, so do any mounts in the namespace.

I looked for explicit docs on this and don't think I found anything that just says that, but in testing I found it to be true.

I use this for "quick and easy" cleanup for genTree.
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µgRD dev
Wiki writer

[pingtoo]

[spica]

There's one thing, if an opened file descriptor exists for something under /proc/{pid}/ns or it is bind mounted then namespace is kept, even if all processes in this namespace ended
~ man 7 namespaces

[pingtoo]