will named delete .jnl files ?

Mark Elkins mje at posix.co.za
Tue Oct 7 18:16:33 UTC 2008


In my experience - the Journal is removed with a Freeze + Thaw and
the zone is updated - to what seems like reasonable contents.

This is with respect to a zone used for dynamic updates - and where the
slave is on the same network... so there are no outstanding IXFR's -
which might otherwise keep the .jnl file around.

I guess thats my specuation, observed from (limited?) real(-ish) world
experience and I should have said "may consolidate" rather than "will
consolidate".

On Tue, 2008-10-07 at 09:23 -0700, Jack Tavares wrote:
> Are you speculating or do you know when you say:
> [quote]
> An "rndc <domain> freeze" will consolidate the zone and remove the .jnl
> file,
> [endquote]
>  
> 
> ________________________________
> 
> From: bind-users-bounce at isc.org on behalf of Mark Elkins
> Sent: Tue 10/7/2008 12:03 PM
> To: bind-users
> Subject: Re: will named delete .jnl files ?
> 
> 
> 
> An "rndc <domain> freeze" will consolidate the zone and remove the .jnl
> file, which should probably be followed rapidly with a "rndc <domain>
> thaw" command...
> 
> Even when the .jnl file is huge - I think that BIND writes out its
> concept of the zone from its memory - as a freeze runs very quickly.
> 
> I guess the .jnl file is used to replay events to a "named" process that
> is restarted??
> 
> Would be nice if named did a freeze/thaw cycle on being terminated???
> 
> On Tue, 2008-10-07 at 17:00 +0800, Li Tongxi wrote:
> > Seems NO. Also, in my test, when the updates come in, I can see a lot of tmp
> > file and one .jnl file. And I didn't see the changes preserved in my zone
> > file. But the DNS works fine and the resolved IP is the updated one not the
> > one in zone file. Do we need do some config to make the update preserved in
> > the zone file? I'm using BIND9.3.
> > 2008/10/7 Jack Tavares <j.tavares at f5.com>
> >
> > > I know how named uses the journal files and how data from those
> > > will eventually get written to the zone files.
> > >
> > > My question is:
> > >
> > > will named ever delete the .jnl files?
> > > For instance:
> > >
> > > updates come in, get stored in .jnl file.
> > > <some time later> those changes are preserved in the zone file.
> > > does named then delete the .jnl file?
> > >
> > > My empirical evidence leads me to believe that the answer is "no"
> > > but I certainly haven't tested every possibility.
> > >
> > > Thanks
> > >
> > > --
> > > Jack Tavares
> > > AIM: jackatavares
> > > SKYPE: jackandkaddee
> > > Reminder: I am at GMT+2, 10 hours AHEAD of Seattle.
> > > My workweek is Sunday-Thursday.
> > > Email sent to me Thursday afternoon (PST) may not be viewed until Sunday
> > > morning (GMT+2).
> > >
> > >
> >
> >
> >
> --
>   .  .     ___. .__      Posix Systems - Sth Africa.  e.164 VOIP ready
>  /| /|       / /__       mje at posix.co.za  -  Mark J Elkins, Cisco CCIE
> / |/ |ARK \_/ /__ LKINS  Tel: +27 12 807 0590  Cell: +27 82 601 0496
> 
> 
> 
> 
-- 
  .  .     ___. .__      Posix Systems - Sth Africa.  e.164 VOIP ready
 /| /|       / /__       mje at posix.co.za  -  Mark J Elkins, Cisco CCIE
/ |/ |ARK \_/ /__ LKINS  Tel: +27 12 807 0590  Cell: +27 82 601 0496



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