Re: [XEN PATCH] tools/xenstore: Log xenstored build ID on startup

[Bjoern Doebel <doebel@xxxxxxxxx>]

On 13.11.20 15:30, Andrew Cooper wrote:
> On 13/11/2020 14:18, Bjoern Doebel wrote:
> > Right now we do not have a mechanism to determine the version of the
> > currently running xenstored at runtime. As xenstored runs throughout the
> > lifetime of a Xen host, this may lead to problems when newer user space
> > builds are staged. Then, the running xenstored will no longer match the
> > version of the installed xenstored.
> >
> > To allow users to always identify the running version of xenstored, add
> > a linker-generated unique build ID to every xenstored build. Add
> > functionality to log this build ID into a file upon service startup.
> >
> > Signed-off-by: Bjoern Doebel <doebel@xxxxxxxxx>
> > Reviewed-by: Martin Mazein <amazein@xxxxxxxxx>
> > Reviewed-by: Paul Durrant <pdurrant@xxxxxxxxxxxx>
> I understand the problem you're trying to solve, but why is this
> anything more than just enabling build-id's by default across tools/ ?
>
> There are already standard ways of interacting with the build id of
> running executables on the system.  I'd strongly discourage doing
> anything custom in xenstored specifically.
May I ask what tooling you would use to interact with a running process' 
buildid?
> ~Andrew
Bjoern




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