too many zone transfers after a reconfig

[torben fjerdingstad]

Why is my slave server transferring the 'dk' zone very often?

I run a slave server (ns-soa.darenet.dk) for the country
toplevel zone 'dk' with  bind-8.2.2-P5.
The zone file is over 30Mb large.

While the transfor goes on, named is non-responsive to
queries, which makes this a big problem. On Aug 2, I
did an 'ndc reconfig' twice, at 11:02 and once again
a few minutes later.

It seems to settle at night.

/etc/namedb # grep '"dk"' /var/adm/messages
Aug  1 11:57:13 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080100)
Aug  1 13:17:56 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080100)
Aug  1 13:21:34 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080100)
Aug  1 13:21:34 ns named[14946]: suppressing duplicate notify ("dk" IN SOA)
Aug  1 13:25:40 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080100)
Aug  1 14:05:48 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080100)
Aug  1 14:07:17 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080100)
Aug  1 14:07:17 ns named[14946]: suppressing duplicate notify ("dk" IN SOA)
Aug  1 14:22:18 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080100)
Aug  1 14:46:38 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080100)
Aug  1 15:28:50 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080100)
Aug  1 15:54:37 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080101)
Aug  1 16:07:37 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  1 16:53:49 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  1 16:57:15 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  1 16:57:15 ns named[14946]: suppressing duplicate notify ("dk" IN SOA)
Aug  1 17:06:50 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  1 17:14:41 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  1 17:20:58 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  1 17:20:59 ns named[14946]: suppressing duplicate notify ("dk" IN SOA)
Aug  1 17:22:23 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  1 17:22:23 ns named[14946]: suppressing duplicate notify ("dk" IN SOA)
Aug  1 18:18:14 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  1 19:09:42 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  1 20:40:12 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  1 21:12:41 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  1 21:22:57 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  1 23:56:19 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  2 00:37:20 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  2 11:03:03 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  2 11:04:29 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  2 11:04:29 ns named[14946]: suppressing duplicate notify ("dk" IN SOA)
Aug  2 11:07:50 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  2 11:07:50 ns named[14946]: suppressing duplicate notify ("dk" IN SOA)
Aug  2 11:09:16 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  2 11:10:41 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  2 11:10:41 ns named[14946]: suppressing duplicate notify ("dk" IN SOA)
Aug  2 11:14:36 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  2 11:14:36 ns named[14946]: suppressing duplicate notify ("dk" IN SOA)
Aug  2 11:16:14 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  2 11:16:14 ns named[14946]: suppressing duplicate notify ("dk" IN SOA)
Aug  2 11:26:50 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  2 11:29:16 ns named[14946]: slave zone "dk" (IN) loaded (serial 2000080102)
Aug  2 11:29:16 ns named[14946]: suppressing duplicate notify ("dk" IN SOA)
[ will it please stop doing that now? ]

/etc/namedb # l slave/shadow.dk-hostmaster.dk/d/dk
-rw-r--r--   1 root     system   31884266 Aug 02 10:51 slave/shadow.dk-hostmaster.dk/d/dk

/etc/namedb # host -t soa dk.
dk                      SOA     ns.dk-hostmaster.dk admin.dk-hostmaster.dk (
                        2000080102      ;serial (version)
                        14400   ;refresh period (4 hours)
                        3600    ;retry interval (1 hour)
                        1209600 ;expire time (2 weeks)
                        86407   ;default ttl (1 day, 7 seconds)
                        )

-- 
Med venlig hilsen / Regards 
Netdriftgruppen / Network Management Group
UNI-C          

Tlf./Phone   +45 35 87 89 41        Mail:  UNI-C                                
Fax.         +45 35 87 89 90               Bygning 304
E-mail: torben.fjerdingstad at uni-c.dk       DK-2800 Lyngby