esm module and ntp problem

[Michael Redinger]

Some news:

This is based on information provided by the Dell Support Hotline (thanks) 
and it seems as if I can verify this:

The problem is _not_ the esm module (directly, at least) but dcstor32d.

When I kill dcstor32d (and restart ntpd), things seem to work fine (for 
some hours now ...).

(However, if I disable dcstor32d, I basically loose all of OMSA's 
functionality ...)


Michael

On Sat, 11 Jan 2003, Michael Redinger wrote:

> On Fri, 10 Jan 2003, JP Vossen wrote:
> 
> > On Fri, 10 Jan 2003, Michael Redinger wrote:
> > 
> > > Summary:
> > > when esm kernel module is loaded on a 2650, the ntpd regularily looses the
> > > synchronization. 100% reproduceable for me.
> > 
> > I have a PE500SC and am NOT running the esm module, byt my ntp loses
> > synchronization every Monday morning just as my backup job is ending.  All RH8
> > errata applied.  Search the list archives for details.  No joy so far... :-(
> 
> 
> I've several 1550, 1650 and 2650 here, I've never seen something similar 
> to your problem ... 
> 
> Well, my problem seems to be different. However, your mail reminded me to 
> add the ntpd -d output (to the web forum page). Thanks.
> 
> I now found that a mail from Geoff French (Geoff.French at noaa.gov) 
> describes maybe exactly the same problem:
> 
> http://lists.us.dell.com/pipermail/linux-poweredge/2002-December/010629.html
> 
> 
> A small part of the debugging output is given below.
> If I interpret it correctly, the interresting part is
> "ntp_set_tod: settimeofday: 0: Interrupted system call", then ntpd clears 
> the connections and restarts syncing (again completely reproducable for 
> me):
> 
> 
> Jan 11 16:18:09 ns0 ntpd: clock_update: at 1104 assoc 6 
> Jan 11 16:18:09 ns0 ntpd: local_clock: assocID 44887 off 3.842509 jit 
> 0.001390 sta 3
> Jan 11 16:18:09 ns0 ntpd: step_systime: step 3.842509 residual 0.000000
> Jan 11 16:18:09 ns0 ntpd: In ntp_set_tod
> Jan 11 16:18:09 ns0 ntpd: ntp_set_tod: settimeofday: 0: Interrupted system 
> call
> Jan 11 16:18:09 ns0 ntpd: ntp_set_tod: Final result: settimeofday: 0: 
> Interrupted system call
> Jan 11 16:18:09 ns0 ntpd: local_clock: mu 908 noi 127846.538 stb 0.000 pol 
> 4 cnt 0
> Jan 11 16:18:09 ns0 ntpd: peer_clear: at 1104 assoc ID 44884
> Jan 11 16:18:09 ns0 ntpd: peer_clear: at 1104 assoc ID 44888
> Jan 11 16:18:09 ns0 ntpd: peer_clear: at 1104 assoc ID 44889
> Jan 11 16:18:09 ns0 ntpd: peer_clear: at 1104 assoc ID 44887
> Jan 11 16:18:09 ns0 ntpd: peer_clear: at 1104 assoc ID 44885
> Jan 11 16:18:09 ns0 ntpd: peer_clear: at 1104 assoc ID 44886
> Jan 11 16:18:09 ns0 ntpd: clear_all: at 1104
> Jan 11 16:18:09 ns0 ntpd: report_event: system event 'event_clock_reset' 
> (0x05) status 'leap_none, sync_unspec, 15 events, event_peer/strat_chg' 
> (0xf4)
> Jan 11 16:18:09 ns0 ntpd: report_event: system event 
> 'event_peer/strat_chg' (0x04) status 'leap_none, sync_unspec, 15 events, 
> event_clock_reset' (0xf5)
> 
> 
> 
> 
> Michael
> 
> 

-- 
Michael Redinger
Zentraler Informatikdienst (Computer Centre)
Universitaet Innsbruck                  
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Austria					Mail: Michael.Redinger at uibk.ac.at