Hi Maksym, This looks like a strange issue. I have some questions about your setup.
- Do you launch your python interpreter with sudo privileges or as the root user? - What python version are you using? What DMTCP version are you using? - What distro are you using? At restart time, DMTCP tries to restore file connections that the process had opened at checkpoint time. I'm not sure why it's trying to open '/dev/ipmi0' on restart. Can you share the output of the following command: ls -l /proc/<PID>/fd prior to checkpointing? (Here PID is the process id of the python interpreter that you launch under DMTCP.) This will help us identify if for some strange reason the python interpreter opens /dev/ipmi0 on your setup. Thanks, Rohan > On Feb 1, 2016, at 3:39 AM, Maksym Planeta <mplan...@os.inf.tu-dresden.de> > wrote: > > Hello, > > I'm trying to setup DMTCP. I installed it and launch coordinator. Then I > launched python interpreter, created a variable, switched to coordinator, > initiated checkpoint, and killed all coordinator clients with "k" command. > > After this python interpreter was terminated and several new files appeared > in the directory where coordinator was running. > > Next I wanted to restart the interpreter. I still had my coordinator open, so > I decided to use dmtcp_restart to launch python again: > > dmtcp_restart ckpt_*.dmtcp > > But this resulted in following error report: > > [40000] ERROR at fileconnection.cpp:863 in openFile; REASON='JASSERT(fd != > -1) failed' > _path = /dev/ipmi0 > (strerror((*__errno_location ()))) = Permission denied > > I have this file: > > $ ls /dev/ipmi0 -lah > crw-rw---- 1 root root 245, 0 Nov 4 10:22 /dev/ipmi0 > > But I don't have root permissions to manipulate access rights over the file. > Could you tell me what can I do about this? And why DMTCP tries to access a > file which the interpreter was never allowed to access? > > -- > Regards, > Maksym Planeta > > ------------------------------------------------------------------------------ > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140_______________________________________________ > Dmtcp-forum mailing list > Dmtcp-forum@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/dmtcp-forum ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Dmtcp-forum mailing list Dmtcp-forum@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dmtcp-forum
