From: Sage Weil <sage@newdream.net>
Date: Fri, 30 Mar 2012 23:11:31 +0000 (-0700)
Subject: log: dump_recent in fatal signal handler
X-Git-Tag: v0.46~124^2~2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=2878865463fa74fef4ea6dcd964425baa658f46f;p=ceph.git

log: dump_recent in fatal signal handler

Signed-off-by: Sage Weil <sage@newdream.net>
---

diff --git a/src/global/signal_handler.cc b/src/global/signal_handler.cc
index dc24bd91fd6c..2a6260da66d1 100644
--- a/src/global/signal_handler.cc
+++ b/src/global/signal_handler.cc
@@ -91,6 +91,16 @@ static void handle_fatal_signal(int signum)
   bt.print(oss);
   dout_emergency(oss.str());
 
+  // dump to log.  this uses the heap extensively, but we're better
+  // off trying than not.
+  derr << buf << std::endl;
+  bt.print(*_dout);
+  *_dout << " NOTE: a copy of the executable, or `objdump -rdS <executable>` "
+	 << "is needed to interpret this.\n"
+	 << dendl;
+
+  g_ceph_context->_log->dump_recent();
+
   reraise_fatal(signum);
 }