Error after upgrade test

[Bron Gondwana]

On Fri, Jan 20, 2012 at 11:59:38AM -0500, Rosenbaum, Larry M. wrote:
> We are testing the migration of Cyrus-IMAP from v2.3.15 on Solaris 9 to v2.4.12 on RHEL6.  After copying the data over to the new server and starting cyrus-imapd, I see the following errors in the log file:
> 
> Jan 20 11:51:33 email-new master[7835]: setrlimit: Unable to set file descriptors limit to -1: Operation not permitted
> Jan 20 11:51:33 email-new master[7835]: retrying with 1024 (current max)

We get this too.  I really think we should remove the setrlimit from Cyrus,
since that call doesn't work.  Really, 1024 should be heaps - we have
removed everything which needs multiple FDs of the same filetype now.

This isn't a problem.

> Jan 20 11:51:33 email-new master[7835]: unable to setsocketopt(IP_TOS): Operation not supported

Oh, this one is new as well - but it's not a problem.  We're trying to
tune the TCP stack.  I'm pretty sure we test for the symbol, but maybe
not for the permission.

> I am concerned about the "Unable to set file descriptors limit" and "unable to setsocketopt(IP_TOS)" error.  What do they mean, and are they important?

Neither of them are a problem - but we should clean them up so they
don't make so much noise.

Bron.