Re: [9fans] How to sync venti

[Sean Quinlan <seanq@research.bell-labs.com>]

At the moment there is no "clean" way to kill the venti server
other than what you describe below.  On the other hand,
the system is designed to be reasonably robust so the
worst thing that can happen is that in flight writes
are lost - in particular, the on disk data structures will
not be corrupted (assuming the implementaion is correct of course).
In particular, when the server starts up, it scans the end region
of the data log and ensures that all the other data structures
reflect the state of the log, including the index, arena header and
arena directory.  In other words, once the data is stored in the
log, it should be ok.  I've been planning to add the ability for
applications to sync with the venti server.  There should also
be a way to ask the server to shut down...

seanq


Dharani Vilwanathan wrote:
>
> > How can I sync venti to terminate safely?
>
> this is my concern too. i generally make sure there is no activity (no vac
> or vacfs runs) and then kill the process. upon venti restart, things seem to
> be fine. but still i am not sure if i can do that, venti being a disaster
> recovery mechanism.