El 23/09/2014 a las #4, Nicolás escribió:
That's something I've not tried yet and it's a good idea, I'll try to
trace the traffic for that client and verify what kind of traffic is
being sent between client and server. I've seen this is an issue that
formerly appeared in 2010 but has not a clear diagnosis yet, and I
don't know clearly how to force it for reproduction, but indeed once I
do I'll try and post some updates.
I've seen a similar issue on a blog which talks about some mess with
the ARP table on the server side
(http://www.planetgeek.ch/2012/04/02/sunray-terminal-unexpected-reboot/).
I'll try to check the ARP table as well and see if it helps
determining the problem.
Today we've been "lucky" and had about 8-9 clients hung with this issue,
so I tried further tests and here are the conclussions:
* Yesterday we had upgraded from 5.4.0 to 5.4.3, obviously this didn't
fix the issue.
* The ARP table issue has nothing to do with this. The ARP table is ok.
* Even using 'utsession -k -t', the hung client keeps sending KeepAlive
packets like these:
keepAliveReq _=1 byteCount=0 connTime=5722.63
fw=11.1.3.0_26_2013.10.28.09.53,Boot:MfgPkg_4.15_2006.07.20.16.57;\0402006.07.20-17:04:56-PDT
hw=SunRayP8 idleTime=5308.54 latency=869 lossCount=0 namespace=IEEE802
pktCount=0 pn=38837 sn=00144f3c8156 state=connected.
* We discovered we can have a list of hung clients via the 'utwho'
command, as these are marked as 'root' sessions.
33 pseudo.00144fXXXXXX root
34 pseudo.00144fXXXXXX root
36 pseudo.00144fXXXXXX root
37 pseudo.00144fXXXXXX root
38 pseudo.00144fXXXXXX root
39 pseudo.00144fXXXXXX root
40 pseudo.00144fXXXXXX root
* What is even more worrying: Today I had an idle client just near me
for about 1 hour, it simply destroyed the GDM greeter and stucked at the
26D screen, without any human action.
* I guess an 'utsession -k -t' command would destroy the session, but
despite this the client would follow sending the above keepalive
packets. I don't know whether this could be fixed killing the
corresponding GDM process for a client? However, I don't know either how
to know which gdm process is attached to a user session, is that
possible to know?
Regards.
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