<div dir="ltr">Also, I think that ghost-file-3.img is suspicious because is too big: ~140MB for a process that consumes ~4MB of ram, and the application does nothing with shared memory (it only initializes the open mpi module). Also the /tmp/openmpi-sessions-root@roaster-vm3_0 directory has a size of only 256KB.<div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>__</div><div><span style="font-size:12.8px">Federico Reghenzani</span></div><div><font size="1">M.Eng. Student @ Politecnico di Milano</font></div><div><span style="font-size:x-small">Computer Science and Engineering</span></div><div><br></div><div><br></div></div></div></div></div></div></div></div>
<br><div class="gmail_quote">2016-03-30 14:33 GMT+02:00 Federico Reghenzani <span dir="ltr"><<a href="mailto:federico1.reghenzani@mail.polimi.it" target="_blank">federico1.reghenzani@mail.polimi.it</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi all!<br><br>We have problem restoring Open MPI daemons with child processes that uses shared memory:<div><font size="1"><br></font></div><div><div><div><font size="1">(00.022447) 255: Opening ghost file 0x3 for tmp/openmpi-sessions-root@roaster-vm3_0/60995/1/shared_mem_pool.roaster-vm3.1</font></div><div><font size="1">(00.022479) 255: Error (files-reg.c:139): Can't open ghost file //tmp/openmpi-sessions-root@roaster-vm3_0/60995/1/shared_mem_pool.roaster-vm3.1.cr.3.ghost: No such file or directory</font></div><div><font size="1">(00.022558) `- X [/dev/shm/open_mpi.0000.cr.1.ghost] ghost</font></div><div><font size="1">(00.022570) `- X [/dev/shm/open_mpi.0001.cr.2.ghost] ghost</font></div><div><font size="1">(00.022586) Error (files-reg.c:445): `- XFail [/tmp/openmpi-sessions-root@roaster-vm3_0/60995/1/shared_mem_pool.roaster-vm3.1.cr.3.ghost] ghost: No such file or directory</font></div><div><font size="1">(00.022595) Error (files-reg.c:445): `- XFail [/tmp/openmpi-sessions-root@roaster-vm3_0/60995/1/shared_mem_btl_module.roaster-vm3.1.cr.4.ghost] ghost: No such file or directory</font></div><div><font size="1">(00.022613) Error (files-reg.c:445): `- XFail [/dev/shm/open_mpi.0000.cr.5.ghost] ghost: No such file or directory</font></div><div><font size="1">(00.022622) Error (cr-restore.c:1995): Restoring FAILED.</font></div></div></div><div><br></div><div>Full criu logs attached.</div><br>We are migrating to another machine, in unshared context (CLONE_NEWPID | CLONE_NEWNS), CRIU version 1.8.<div><div><div><div><div dir="ltr"><div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div>Any suggestions?</div><div>Cheers,</div><div>Federico<br clear="all"><div><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>__</div><span class="HOEnZb"><font color="#888888"><div><span style="font-size:12.8px">Federico Reghenzani</span></div><div><font size="1">M.Eng. Student @ Politecnico di Milano</font></div><div><span style="font-size:x-small">Computer Science and Engineering</span></div><div><br></div><div><br></div></font></span></div></div></div></div></div></div></div>
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