[dpdk-dev] /run/dpdk cleanup

[Burakov, Anatoly]

On 08-Jul-19 4:00 PM, Shubhachint, Chaitanya wrote:
> Hello,
> 
> I run my dpdk applications with "file-prefix" option, so I can run them concurrently. I see that it creates a runtime directory under /var/run/dpdk. This directory still persists after the application has terminated. The code calls rte_eal_cleanup before exiting but that doesn't seem to remove the directory and its content. In my setup I have to consistently bring my applications up, run then for short period and terminate them, each application run picks a new file-prefix, thus creating new directory under /var/run/dpdk. After enough number of runs the tempfs partition fills up and results into rte_eal_init failure.
> Is there a cleanup routine or sequence I need to implement to unlink this directory? Your help is appreciated.
> 
> Chaitanya.
> 

This is a natural consequence of how our multiprocessing works. Running 
a secondary process *after* primary has already exited is a supported 
use-case (meaning, primary won't clean up *everything* after itself - 
only things that are not shared), and secondary processes may be running 
as well (meaning, we cannot remove shared data because it may be used by 
other processes).

I don't think it's possible to do this from within DPDK. Of course, you 
could always use --in-memory mode if you don't use secondary processes.

-- 
Thanks,
Anatoly