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Aditya Rajan e64e6500d3 volume: add support for non-volatile upperdir,workdir for overlay volumes
Often users want their overlayed volumes to be `non-volatile` in nature
that means that same `upper` dir can be re-used by one or more
containers but overall of nature of volumes still have to be `overlay`
so work done is still on a overlay not on the actual volume.

Following PR adds support for more advanced options i.e custom `workdir`
and `upperdir` for overlayed volumes. So that users can re-use `workdir`
and `upperdir` across new containers as well.

Usage
```console

$ podman run -it -v myvol:/data:O,upperdir=/path/persistant/upper,workdir=/path/persistant/work alpine sh

```

Signed-off-by: Aditya R <arajan@redhat.com>
2022-01-28 13:10:15 +05:30
..
2022-01-27 07:03:56 -05:00
2022-01-11 14:33:54 -05:00