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common: Debug ctdb_addr_to_str() using new function ctdb_external_trace() We've seen this function report "Unknown family, 0" and then CTDB disappeared without a trace. If we can reproduce it then this might help us to debug it. The idea is that you do something like the following in /etc/sysconfig/ctdb: export CTDB_EXTERNAL_TRACE="/etc/ctdb/config/gcore_trace.sh" When we hit this error than we call out to gcore to get a core file so we can do forensics. This might block CTDB for a few seconds. Signed-off-by: Martin Schwenke <martin@meltin.net> (This used to be ctdb commit 7895bc003f087ab2f3181df3c464386f59bfcc39) 2012-09-06 20:22:38 +10:00			`#!/bin/sh`

			`gcore -o "/var/log/core" "$1" 2>&1 \| logger -t "ctdb:gcore_trace"`