Author: gavin
Date: Wed Aug 28 15:12:15 2013
New Revision: 254992
URL: http://svnweb.freebsd.org/changeset/base/254992
Log:
After writing a kernel core dump into /var/crash, call sync(8).
If we panic again shortly after boot (say, within 30 seconds), any core
dump we wrote out may be lost on reboot. In this situation, we really
want to keep that core file, as it may be the only way to have the issue
resolved. Call sync(8) after writing out the core file and running
crashinfo(8), in the hope that these will not be lost if we panic
again. sync(8) is only called in the case where there is a core dump
to be written out, so won't be called during normal boots.
Discovered by: Trying to debug an IPSEC panic
MFC after: 1 week
Modified:
head/etc/rc.d/savecore
Modified: head/etc/rc.d/savecore
==============================================================================
--- head/etc/rc.d/savecore Wed Aug 28 14:49:36 2013 (r254991)
+++ head/etc/rc.d/savecore Wed Aug 28 15:12:15 2013 (r254992)
@@ -70,6 +70,7 @@ savecore_start()
if checkyesno crashinfo_enable; then
${crashinfo_program} -d ${dumpdir}
fi
+ sync
else
check_startmsgs && echo 'No core dumps found.'
fi
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