[OpenAFS] ADS communications issue?

[Jeffrey Altman]

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I suspect you are being bitten by a problem with the multi-realm
support in 1.4.11.   The src/util directory is not being compiled
with the correct environment variable set so the cross-realm support
is failing.  The quick fix is to remove the

  #if     defined(AFS_ATHENA_STDENV) || defined(AFS_KERBREALM_ENV)
  #endif

pair in src/util/get_krbrlm.c fs_is_foreign_ticket_name()

Jeffrey Altman


Eric Chris Garrison wrote:
> Hello,
> 
> We're doing a cutover from MIT Kerberos to ADS, and while it works most
> everywhere else, one of our supercomputers' nodes is giving us problems.
> 
> AFS works fine with MIT Kerberos.
> 
> AFS "hangs" with ADS.  That is, it'll try to reach the /afs/iu.edu
> directory for 10-15 minutes, then time out, saying:
> 
> ls: /afs/iu.edu: No such file or directory
> 
> Interestingly, if I do a "bos status -noauth" from the client it works
> fine.  If I do it with a proper (ADS) token, it hangs and times out with
> the following error:
> 
> bos: failed to contact host's bosserver (communications failure (-1)).
> 
> Watching a tcpdump of the session from the server's point of view, it
> appears that the client never responds to rx requests:
> 
> bos:  rx data bos call enumerate-instance 0 (36)
> 15:51:54.485660 IP RFSHOST.afs3-bos > CLIENT.53057:  rx challenge (44)
> 15:51:54.586685 IP RFSHOST.afs3-bos > CLIENT.53057:  rx ack first 1 serial
> 0 reason delay acked 16777216 (66)
> 15:51:56.486625 IP RFSHOST.afs3-bos > CLIENT.53057:  rx challenge (44)
> 15:51:58.487591 IP RFSHOST.afs3-bos > CLIENT.53057:  rx ack first 1 serial
> 0 reason ping acked 16777216 (66)
> 15:51:58.487610 IP RFSHOST.afs3-bos > CLIENT.53057:  rx challenge (44)
> 15:51:58.488850 IP CLIENT.53057 > RFSHOST.afs3-bos:  rx ack first 1 serial
> 4 reason ping response (65)
> ...and so on.
> 
> Again, this works fine with the MIT Kerberos realm, so it does not seem to
> be a firewall or router filter type issue, and we're able to get Kerberos
> tickets and tokens just fine with either realm.  It just has
> communications issues when we have tokens gotten with ADS.
> 
> Any ideas what would cause this behavior?  I had them update to a recent
> (1.4.11) openafs client, just in case our current dual realm status was
> the problem, but that does not seem to make a difference.
> 
> Thanks,
> 
> Chris

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