Red Hat Bugzilla – Bug 173633
cman/sm nodeid lookup fails
Last modified: 2009-04-16 16:30:42 EDT
Description of problem:
System running 2.6.9-22 kernel sitting idle went into kdb with
Assertion failed on line 52 of file cluster/cman/sm_misc.c
Attached typescript file has kdb: bt, sr -t, ps, dmesg output.
Version-Release number of selected component (if applicable):
kernel = 2.6.9-22
Not sure. We've only seen it once to date and the system
was not doing anything. Testers came in and found it kdb.
Steps to Reproduce:
Created attachment 121241 [details]
ascii file output from kdb, see above description
Could you verify that cluster.conf was the same on all nodes?,
and a copy of that may be helpful to see, along with
'cman_tool nodes' from one of the other nodes if they are
This assertion failure may indicate some sort of internal
consistency problem within cman: the sm portion is looking
up a nodeid that the cnxman portion doesn't know about, which
shouldn't be possible. If the assignment of nodeid's to nodes
was changing while the cluster was running (different versions
of cluster.conf on the nodes possibly), that might lead to this
kind of error. If untypically large nodeids are being used, that
may point toward the cnxman code that dynamically increases the
standard node arrays.
This assertion failure was reported once before to me in an
email (in May by Dan Phung) and he had been updating cluster.conf
on some nodes.
I'm adding a printk to the code to provide a little more
information in the assertion message if this happens again.
waiting for someone to see this again and report with the
additional info from the panic