[Xen-devel] problem restarting xenstored

["Jan Beulich" <jbeulich@xxxxxxxxxx>]

As any other daemon, I'd assume it should be possible to restart xenstored (i.e.
if it crashed or if, during development, a fix was made to it that needs to be
tested). However, as I learned after over a day of digging, things don't work
anymore after doing so: Since the watches are transient, they're lost with the
daemon going away.
Right now I specifically need this in already mentioned scenarios where I want
to not touch the base installation of a system or need parallel versions 
installed,
but as described above I see the general issue broader (e.g. it obviously
doesn't make sense to try to start xenstored from 'xend restart' because of
described problems).
For some reason, this wasn't a big problem when the base installation was
3.0.2-based - apparently something else prevented xenbus' event channel
handler to get triggered when the 3.0.2 xenstored loaded, and hence all the
needed watches got installed only when the proper version was loaded the
first time, giving the impression that things work as expected (until perhaps
reloading it a second time).

Any suggestions on how to overcome that would be very welcome.

Thanks, Jan

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