Re: [PATCH 00/10] tools/xenstored: Bug fixes + Improve Live-Update

[Julien Grall <julien@xxxxxxx>]

Hi,

On 16/06/2021 16:43, Julien Grall wrote:
> From: Julien Grall <jgrall@xxxxxxxxxx>
>
> Hi all,
>
> At the moment, Live-Update will, by default, not proceed if there are
> in-flight transactions. It is possible force it by passing -F but this
> will break any connection with in-flight transactions.
>
> There are PV drivers out that may never terminate some transaction. On
> host running such guest, we would need to use -F. Unfortunately, this
> also risks to break well-behaving guests (and even dom0) because
> Live-Update will happen as soon as the timeout is hit.
>
> This series aims to allow to Live-Update more safely even when the option
> -F is used.
>
> The first part of the series contains a few fixes for bug found while
> testing Live-Update.
>
> Cheers,
>
> Julien Grall (10):
>    MAINTAINERS: Add myself as reviewers for tools/xenstore
>    tools/xenstored: Introduce lu_get_connection() and use it
>    tools/xenstore: Don't assume conn->in points to the LU request
>    tools/xenstored: Limit the number of requests a connection can delay
>    tools/xenstored: xenstored_core.h should include fcntl.h
>    tools/xenstored: Introduce a wrapper for conn->funcs->can_{read,
>      write}
>    tools/xenstored: delay_request: don't assume conn->in == in
>    tools/xenstored: Extend restore code to handle multiple input buffer
I have committed the first 8 patches.

>    tools/xenstored: Dump delayed requests
>    tools/xenstored: Delay new transaction while Live-Update is pending
Cheers,

--
Julien Grall