[kata-dev] RFC: direct-assigned filesystem volume proposal

Eric Ernst eric.g.ernst at gmail.com
Thu Apr 8 00:07:05 UTC 2021


On Thu, Apr 1, 2021 at 7:58 AM Stefan Hajnoczi <stefanha at redhat.com> wrote:

> On Mon, Mar 29, 2021 at 04:49:31PM -0700, Eric Ernst wrote:
> > I'd like to see if we can create a pattern in upstream Kata Containers to
> > help facilitate directly assigning volumes to the VM via virtio-blk,
> > skipping any mounts on the host, and avoiding needing to use a shared
> > file-system for the particular volume. Some of the benefits in doing
> this:
> >  - we can better isolate the host (no mounted filesystem),
>
> It would be nice to make the mechanism extensible so other types of
> volumes can be attached in the future.
>
> It might be desirable to perform an NFS mount inside the sandbox VM
> instead of on the host, for example. The downside is that the sandbox VM
> needs access to the storage network, but the host kernel is no longer
> involved.
>

Stefan,

Sorry I missed this initial reply. Can you help with identifying how you
think we should augment the DiskMountInfo structure to accomodate?

Eric



> Stefan
>
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