Hi Joshua, Thanks for the bug report. I think I know where the bug is. I will try to patch the svn and will write back once I have done that.
Kapil On Fri, Mar 22, 2013 at 12:24 PM, Louie, Joshua D <[email protected]> wrote: > I’m investigating a crash on restore of a larger test case we have, in which > I have determined that the > > situation is that we have a file opened (looking at /proc/<pid>/fd) that is > deleted: > > > > 30 -> /tmp/ffiWlKyqm (deleted) > > > > Now, this has been on 1.2.4, so I tried using the latest version, but I got > stuck somewhere else, > > (and haven’t had a chance to figure that out). > > > > So I tried making a small test case that could reproduce the exact error > message I was getting. Now, I > > didn’t get the exact same error, but I found one case that occurs when I do > a checkpoint (on both 1.2.4 > > and trunk). I’ll still be looking for the original problem, so when I get > that, I’ll be submitting another > > issue to the forum. > > > > Error shown when dmtcpCheckpoint(): > > [40000] ERROR at fileconnection.cpp:881 in writeFileFromFd; > REASON='JASSERT(readBytes != -1) failed' > > (strerror((*__errno_location ()))) = Bad file descriptor > > Message: Read Failed > > delete_test (40000): Terminating... > > > > delete_test.c: > > #include <stdio.h> > > #include <stdlib.h> > > #include <unistd.h> > > #include <dmtcpaware.h> > > > > int main() > > { > > FILE *fp; > > // Problematic only when in “w” mode or “a”. All + modes and “r” are > fine. > > fp = fopen("/tmp/ff_jdl", "w"); > > > > fprintf(stdout, "Opened ff_jdl\n"); > > sleep(1); > > > > fprintf(stdout, "Deleting ff_jdl\n"); > > unlink("/tmp/ff_jdl"); > > sleep(2); > > dmtcpCheckpoint(); > > > > fprintf(stdout, "I have returned\n"); > > sleep(2); > > return 0; > > } > > > > Joshua Louie > > > > > ------------------------------------------------------------------------------ > Everyone hates slow websites. So do we. > Make your web apps faster with AppDynamics > Download AppDynamics Lite for free today: > http://p.sf.net/sfu/appdyn_d2d_mar > _______________________________________________ > Dmtcp-forum mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/dmtcp-forum > ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar _______________________________________________ Dmtcp-forum mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dmtcp-forum
