Update failed

Hello!

We upgraded one of our servers from 4.3.5 to 4.6, but had some problems with XFRs (not yet debugged in detail) and hence went back to 4.3.5.

Since that, one of the served zones periodically reports “update failed” without any details, but seems to recover itself (more logs below)

Aug 17 06:27:31 tld-all-vnn1.rcode0.net nsd[4148890]: zone example serial 1083711025 is updated to 1083711033

Aug 17 06:27:31 tld-all-vnn1.rcode0.net nsd[4148890]: xfrd: zone example: soa serial 1083711027 update failed, restarting transfer (notified zone)

We already use verbosity: 2, any chance to get more info why the update failed?

Further, I do not understand how it can happen that “serial 1083711025 is updated to 1083711033” but then it complains that an update to an intermediate “serial 1083711027 update failed”.

Please give us some info how we can debug this issue or if we shall ignore the problem.

Thanks

Klaus

(update failed with 20 lines before and after)

Aug 17 04:27:16 tld-all-vnn1.rcode0.net nsd[4148891]: writing zone example to file example.zone

Aug 17 04:27:16 tld-all-vnn1.rcode0.net nsd[4148890]: xfrd: zone example committed “received update to serial 1083708815 at 2022-08-17T04:27:16 from X.X.X.4 TSIG verified with key foobar”

Aug 17 04:27:16 tld-all-vnn1.rcode0.net nsd[1528612]: notify for example. from X.X.X.20 serial 1083708815

Aug 17 04:27:16 tld-all-vnn1.rcode0.net nsd[1528612]: notify for example. from XXXX:XXXX:9::5 serial 1083708815

Aug 17 04:27:21 tld-all-vnn1.rcode0.net nsd[1528612]: notify for example. from X.X.X.4 serial 1083708817

Aug 17 04:27:21 tld-all-vnn1.rcode0.net nsd[1528612]: notify for example. from XXXX:XXXX:8::5 serial 1083708817

Aug 17 04:27:21 tld-all-vnn1.rcode0.net nsd[4148890]: xfrd: zone example committed “received update to serial 1083708817 at 2022-08-17T04:27:21 from X.X.X.4 TSIG verified with key foobar”

Aug 17 04:27:21 tld-all-vnn1.rcode0.net nsd[1528612]: notify for example. from X.X.X.20 serial 1083708817

Aug 17 04:27:21 tld-all-vnn1.rcode0.net nsd[1528612]: notify for example. from XXXX:XXXX:9::5 serial 1083708817

Aug 17 04:27:26 tld-all-vnn1.rcode0.net nsd[1528612]: notify for example. from X.X.X.4 serial 1083708818

Aug 17 04:27:26 tld-all-vnn1.rcode0.net nsd[1528612]: notify for example. from XXXX:XXXX:8::5 serial 1083708818

Aug 17 04:27:26 tld-all-vnn1.rcode0.net nsd[4148890]: xfrd: zone example committed “received update to serial 1083708818 at 2022-08-17T04:27:26 from X.X.X.4 TSIG verified with key foobar”

Aug 17 04:27:26 tld-all-vnn1.rcode0.net nsd[1528612]: notify for example. from X.X.X.20 serial 1083708818

Aug 17 04:27:26 tld-all-vnn1.rcode0.net nsd[1528612]: notify for example. from XXXX:XXXX:9::5 serial 1083708818

Aug 17 04:27:29 tld-all-vnn1.rcode0.net nsd[4148891]: writing zone xn–e1a4c to file xn–e1a4c.zone

Aug 17 04:27:29 tld-all-vnn1.rcode0.net nsd[4148891]: writing zone xn–qxa6a to file xn–qxa6a.zone

Aug 17 04:27:29 tld-all-vnn1.rcode0.net nsd[4148891]: zone example. received update to serial 1083708815 at 2022-08-17T04:27:16 from X.X.X.4 TSIG verified with key foobar of 4292 bytes in 8.2e-05 seconds

Aug 17 04:27:29 tld-all-vnn1.rcode0.net nsd[4148891]: zone example. received update to serial 1083708817 at 2022-08-17T04:27:21 from X.X.X.4 TSIG verified with key foobar of 8527 bytes in 0.00011 seconds

Aug 17 04:27:29 tld-all-vnn1.rcode0.net nsd[4148891]: zone example. received update to serial 1083708818 at 2022-08-17T04:27:26 from X.X.X.4 TSIG verified with key foobar of 4282 bytes in 5e-05 seconds

Aug 17 04:27:30 tld-all-vnn1.rcode0.net nsd[4148890]: zone example serial 1083708814 is updated to 1083708818

Aug 17 04:27:30 tld-all-vnn1.rcode0.net nsd[4148890]: xfrd: zone example: soa serial 1083708817 update failed, restarting transfer (notified zone)

Aug 17 04:27:31 tld-all-vnn1.rcode0.net nsd[1529116]: notify for example. from X.X.X.4 serial 1083708820

Aug 17 04:27:31 tld-all-vnn1.rcode0.net nsd[1529116]: notify for example. from XXXX:XXXX:8::5 serial 1083708820

Aug 17 04:27:31 tld-all-vnn1.rcode0.net nsd[4148890]: xfrd: zone example committed “received update to serial 1083708820 at 2022-08-17T04:27:31 from X.X.X.4 TSIG verified with key foobar”

Aug 17 04:27:31 tld-all-vnn1.rcode0.net nsd[1529116]: notify for example. from X.X.X.20 serial 1083708820

Aug 17 04:27:31 tld-all-vnn1.rcode0.net nsd[1529116]: notify for example. from XXXX:XXXX:9::5 serial 1083708820

Aug 17 04:27:31 tld-all-vnn1.rcode0.net nsd[4148891]: zone example. received update to serial 1083708820 at 2022-08-17T04:27:31 from X.X.X.4 TSIG verified with key foobar of 8552 bytes in 0.000105 seconds

Aug 17 04:27:32 tld-all-vnn1.rcode0.net nsd[4148890]: zone example serial 1083708818 is updated to 1083708820

Aug 17 04:27:36 tld-all-vnn1.rcode0.net nsd[1529118]: notify for example. from X.X.X.4 serial 1083708821

Aug 17 04:27:36 tld-all-vnn1.rcode0.net nsd[1529118]: notify for example. from XXXX:XXXX:8::5 serial 1083708821

Aug 17 04:27:36 tld-all-vnn1.rcode0.net nsd[4148890]: xfrd: zone example committed “received update to serial 1083708821 at 2022-08-17T04:27:36 from X.X.X.4 TSIG verified with key foobar”

Aug 17 04:27:36 tld-all-vnn1.rcode0.net nsd[4148891]: zone example. received update to serial 1083708821 at 2022-08-17T04:27:36 from X.X.X.4 TSIG verified with key foobar of 4372 bytes in 9.3e-05 seconds

Aug 17 04:27:37 tld-all-vnn1.rcode0.net nsd[4148890]: zone example serial 1083708820 is updated to 1083708821

Aug 17 04:27:38 tld-all-vnn1.rcode0.net nsd[1529125]: notify for example. from X.X.X.20 serial 1083708821

Aug 17 04:27:38 tld-all-vnn1.rcode0.net nsd[1529125]: notify for example. from XXXX:XXXX:9::5 serial 1083708821

Aug 17 04:27:44 tld-all-vnn1.rcode0.net nsd[1529125]: notify for example. from X.X.X.4 serial 1083708825

Aug 17 04:27:44 tld-all-vnn1.rcode0.net nsd[1529125]: notify for example. from XXXX:XXXX:8::5 serial 1083708825

Aug 17 04:27:44 tld-all-vnn1.rcode0.net nsd[4148890]: xfrd: zone example committed “received update to serial 1083708825 at 2022-08-17T04:27:44 from X.X.X.4 TSIG verified with key foobar”

Aug 17 04:27:45 tld-all-vnn1.rcode0.net nsd[4148891]: zone example. received update to serial 1083708825 at 2022-08-17T04:27:44 from X.X.X.4 TSIG verified with key foobar of 13919 bytes in 9.5e-05 seconds

Aug 17 04:27:45 tld-all-vnn1.rcode0.net nsd[4148890]: zone example serial 1083708821 is updated to 1083708825

Aug 17 04:27:45 tld-all-vnn1.rcode0.net nsd[1529403]: notify for example. from X.X.X.20 serial 1083708825