Here are the steps I follow to reproduce the issue:
1. Open a file with Axis, run lsof on the opened file
2. Open another file closing the first one, run lsof on the previously opened file
3. Axis is still listed as using the first file
I realise that for large designs it might make sense to read G-code from the file directly, however considering computer resources nowadays there could be at least a switch to toggle the behaviour.
This is what I expected to happen:
File is immediately closed after reading or at least closed when I open another file.
This is what happened instead:
File is left open, resulting in locked files on CIFS shared folder.
Information about my hardware and software:
* I am using latest Git revision compiled on Fedora, same issue was in the LinuxCNC distro installed in the summer of 2016. I can check the version next time I’ll be at the lab.
评论 (4)
#2 – laurivosandi 于 2017-05-19
Hello, which inifile are you talking about? The documentation doesn’t mention where the files are…
#3 – jepler 于 2017-05-19
~/linuxcnc/configs or configs in the source tree.
#4 – laurivosandi 于 2017-05-19
Machine configuration directory and file is dumped at the terminal when LinuxCNC GUI is started up, it happened to be in this case `/home/$USER/linuxcnc/configs/sim/axis/axis.ini, I added ngc = cat in the [FILTER] section and no more the files are locked. Thanks for the workaround, btw this won't make a copy to /tmp, it just uses the cat command to read the file and cat just happens to close file properly after dumping the output to stdout`.
However without the workaround I think opening another file should definitely close the previous ones. It’s essentially leaking memory and file handles as it is right now.
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#1 – jepler 于 2017-05-19
You can probably at least prevent these CIFS files from being locked by using a program filter of “cat”, e.g., if you consistently use the “.gcode” extension, find the
[FILTER]section of your inifile and addgcode = cat. This basically causes AXIS to take a copy of the file in /tmp before opening it.However, this may also affect how “reload” functions, I would have to review the source code to check that.
note: this is just a possible workaround, and what you describe still sounds like a bug that ought to be fixed.