Messages in this thread | | | Date | Tue, 4 Nov 2008 12:44:36 -0600 | From | "Serge E. Hallyn" <> | Subject | Re: [RFC v8][PATCH 0/12] Kernel based checkpoint/restart |
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Quoting Oren Laadan (orenl@cs.columbia.edu): > Basic checkpoint-restart [C/R]: v8 adds support for "external" checkpoint > and improves documentation. Older announcements below.
The following test-program seems to reliably trigger a bug. Run it in a new set of namespaces, i.e. ns_exec -cmpiuU ./runme > /tmp/o then control-c it. The second time I do that, I get the dcache.c:666 BUG().
#include <stdio.h> #include <stdlib.h> #include <errno.h> #include <unistd.h> #include <sys/syscall.h>
#define __NR_checkpoint 333 int main (int argc, char *argv[]) { pid_t pid = getpid(); int ret;
close(0); close(2); ret = syscall (__NR_checkpoint, pid, STDOUT_FILENO, 0);
if (ret < 0) perror ("checkpoint"); else printf ("checkpoint id %d\n", ret);
sleep(200); return (ret > 0 ? 0 : 1); }
-serge
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