[OpenAFS] Strange DNS SRV traffic resulting from stat() in 1.8.13.2

[Ryan C. Underwood]

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Hi Jeffrey:

On Fri, Aug 22, 2025 at 01:08:25PM -0400, Jeffrey Altman wrote:
>=20
> What is the version of Ubuntu and most importantly, what is the kernel ve=
rsion?

Ubuntu 25.04 with kernel 6.14

> Unless the afsd dynamic root functionality is disabled, DNS SRV or DNS AF=
SDB queries would be expected if the cache manager=E2=80=99s CellServDB doe=
s not contain a list of database servers for the cell =E2=80=9Cice quake.ne=
t=E2=80=9D.  In particular we would expect to see a DNS SRV query for  :_af=
s3-vlserver._udp.icequake.net and if that query failed, then a fallback que=
ry for DNS AFSDB =E2=80=9Cicequake.net=E2=80=9D.   Those queries are not pr=
esent in the above trace.  As far as I can tell there are neither DNS SRV n=
or DNS AFSDB records published for ice quake.net.

Those records are there and haven't been changed in a very long time:

icequake.net            IN SOA  ns1.icequake.net. hostmaster.icequake.net. (
[..]
                        IN AFSDB        1 afs.icequake.net.
                        IN AFSDB        1 afs2.icequake.net.
                        IN AFSDB        1 afs3.icequake.net.
                        IN AFSDB        1 afs4.icequake.net.
[..]
$ORIGIN _udp.icequake.net.
_afs3-vlserver          IN SRV 10 10 7003 afs.icequake.net.
_afs3-vlserver          IN SRV 10 10 7003 afs2.icequake.net.
_afs3-vlserver          IN SRV 10 10 7003 afs3.icequake.net.
_afs3-vlserver          IN SRV 10 10 7003 afs4.icequake.net.
_afs3-prserver          IN SRV 10 10 7002 afs.icequake.net.
_afs3-prserver          IN SRV 10 10 7002 afs2.icequake.net.
_afs3-prserver          IN SRV 10 10 7002 afs3.icequake.net.
_afs3-prserver          IN SRV 10 10 7002 afs4.icequake.net.

How did you test that led to the conclusion that there are no such records?

> What else changed between when 1.8.10 was installed and 1.8.13.2?

Just the recent ubuntu distribution upgrade and regular package
upgrades.  It's hard to contain all the variables on this particular
system since it's a daily driver.
=20
> I am curious if you experience the same behavior problems with the AuriSt=
orFS client.  If you do, that is a strong indication that the problem is ex=
ternal to OpenAFS.

Never used it but happy to take a look.

--=20
Ryan C. Underwood, <nemesis@icequake.net>

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