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    SubjectRe: [PATCH 0/6] xen: frontend devices should handle missed backend CLOSING
    On Fri, Sep 21, 2012 at 05:04:18PM +0100, David Vrabel wrote:
    > The series makes all the Xen frontend drivers handle the backend
    > transitioning to CLOSED without the frontend having previously seen
    > the backend in the CLOSING state.
    >
    > Backends shouldn't do this but some do. e.g., if the host is
    > XenServer and the toolstack decides to do a forced shutdown of a VBD,
    > then the blkfront may miss the CLOSING transition and the /dev/xvdX
    > device will not be destroyed which prevents it being reused.
    >
    > I have seen systems that ended up in this state but it's not clear if
    > this was the actual cause. However, I think in general it's a good
    > thing to thing to improve the handling of unexpected state
    > transitions.
    >
    > Konrad, I've split this into a patch per frontend in case each patch
    > should go via a different maintainer. But if you'd prefer, I can roll
    > this up into one patch to via your Xen tree.

    I like the split-up. Can you repost them with the different maintainers
    CC (scripts/get_maintainers.pl) and with Acked-by from me on them?

    >
    > David


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