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[Post Gregory's response to the list, he replied only to me. See below.] On Mon, Aug 15, 2005 at 02:26:55PM -0400, Gregory J. Sharp wrote: > > On 15Aug2005, at 14:03 , Peter Elmer wrote: > > Gregory, are you saying that the connections fail completely? > > In valgrind the connections fail completely. Peter is correct: we are > using the XrdPosix interface. > > For reference, when I use valgrind I get the following messages: > > 050815 14:17:02 001 Xrd: Create: (C) 2004 SLAC INFN XrdClient 0.3 > 050815 14:17:05 001 Xrd: ReadPartialAnswer: Error reading msg from > connmgr (server [lnx243.lns.cornell.edu:1094]). > 050815 14:17:05 001 Xrd: ReadPartialAnswer: Calling HandleServerError > > **** At this point HandleServerError recursively redirects to > another data server. Since I only have one data server, it goes back > to the same one, which fails again ... > > 050815 14:17:05 12087 Xrd: XrdClientSock::RecvRaw: Error reading from > socket: Resource temporarily unavailable > 050815 14:17:05 12087 Xrd: XrdClientMessage::ReadRaw: Error reading 8 > bytes. > 050815 14:17:05 001 Xrd: ReadPartialAnswer: Error reading msg from > connmgr (server [lnx243.lns.cornell.edu:1094]). > 050815 14:17:05 001 Xrd: ReadPartialAnswer: Calling HandleServerError > > **** Now note below that after starting the poll() call in > RecvRaw, somebody called Disconnect() - I can't figure out who did that. > > 050815 14:17:05 12087 Xrd: XrdClientSock::RecvRaw: since we entered > RecvRaw, socket file descriptor has changed to -1 > 050815 14:17:05 12087 Xrd: XrdClientMessage::ReadRaw: Error reading 8 > bytes. > > **** and this recurses until we hit the redirect retry limit. It > tries to connect to the server again, gets more failures trying to > read and shortly thereafter the whole thing hangs. > > When I run without valgrind there are no errors (yeah, I know, "so > don't do that" :-) > > My suspicion is some sort of timing issue, but if you have no trouble > using valgrind when running without XrdPosix, then perhaps the > problem lies there. > > -- > Gregory J. Sharp email: [log in to unmask] > Wilson Synchrotron Laboratory url: http://www.lepp.cornell.edu/ > ~gregor > Cornell University ph: +1 607 255 4882 > Ithaca, NY 14853 fax: +1 607 255 8062 > ------------------------------------------------------------------------- Peter Elmer E-mail: [log in to unmask] Phone: +41 (22) 767-4644 Address: CERN Division PPE, Bat. 32 2C-14, CH-1211 Geneva 23, Switzerland -------------------------------------------------------------------------