Zone transfers locking up DNS

[Gary Algier]

Ok, I'll bite:  Where are "incremental tranfers" documented?

I searched the archives and found some references to "ifxr", however:
gaaroot at chuckie 180% man -a named | egrep -i '(ixfr|increment)'
Reformatting page.  Please Wait... done
gaaroot at chuckie 181%

There seems to be no information in the man pages.  I can't find anything
in my (3rd edition) _DNS_&_BIND_.  I'll stop at the book store on the way
home, but should it not be in the man pages?

Gary



Snoopy wrote:
> I think you can try to do an 'incremental' transfer instead of a full
> transfer each time....
> 
> 
> "Gary Algier" <gaa at ulticom.com> wrote in message
> news:blchn1$2all$1 at sf1.isc.org...
> 
>>Hi,
>>
>>I am using a well known email blacklist service.  It is implemented with
> 
> zone
> 
>>transfers.  When the transfer happens it takes about 5 minutes.   While
>>this is going on, all other DNS queries stop.  And yes, I have built the
>>threaded version of bind (9.2.2 btw).  It does not always stop everything,
>>but it sure seems to often enough.  It seems as if one thread handles the
>>zone transfer and if nobody asks for any information from the given zone
>>we will be ok, but once a thread tries to handle a request from that zone,
>>that thread gets stuck.
>>
>>Does anyone have a solution?  Is there any way to make the zone transfers
>>happen "offline"?  I don't need them to be absolutely up to date.  I _do_
>>need to be able to satisfy other DNS queries.
>>
>>(I thought of limiting the transfer times, but the granularity is too
> 
> large.
> 
>>I would need to limit it to only a few seconds and the unit is 1 minute.)
>>
>>-- 

-- 
Gary Algier, WB2FWZ          gaa at ulticom.com             +1 856 787 2758
Ulticom Inc., 1020 Briggs Rd, Mt. Laurel, NJ 08054      Fax:+1 856 866 2033

Nielsen's First Law of Computer Manuals:
     People don't read documentation voluntarily.