Re: [dpdk-stable] [dpdk-dev] [PATCH v2] eal: clean up unused files on initialization

[Thomas Monjalon <thomas@monjalon.net>]

14/11/2018 04:24, Varghese, Vipin:
> Tested-by: Vipin Varghese <vipin.varghese@intel.com>
> 
> <snipped>
>  
> > >> When creating process data structures, EAL will create many files in
> > >> EAL runtime directory. Because we allow multiple secondary processes
> > >> to run, each secondary process gets their own unique file. With many
> > >> secondary processes running and exiting on the system, runtime
> > >> directory will, over time, create enormous amounts of sockets,
> > >> fbarray files and other stuff that just sits there unused because the
> > >> process that allocated it has died a long time ago. This may lead to
> > >> exhaustion of disk (or RAM) space in the runtime directory.
> > >>
> > >> Fix this by removing every unlocked file at initialization that
> > >> matches either socket or fbarray naming convention. We cannot be sure
> > >> of any other files, so we'll leave them alone. Also, remove similar
> > >> code from mp socket code.
> > >>
> > >> We do it at the end of init, rather than at the beginning, because
> > >> secondary process will use primary process' data structures even if
> > >> the primary itself has died, and we don't want to remove those before
> > >> we lock them.
> > >>
> > >> Bugzilla ID: 106
> > >>
> > >> Cc: stable@dpdk.org
> > >>
> > >> Reported-by: Vipin Varghese <vipin.varghese@intel.com>
> > >>
> > >> Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
> 
> Thanks Anatoly for the patch which clean-ups the tmpfs. This unblock the client from critical stopper too.
> 
> > >
> > > I feel it is too big and too late for 18.11.
> > > Can we move it to 19.02?
> > 
> >  From maintainer's point of view, i agree that it's too risky to merge into 18.11
> > at this stage. My input should probably stop there, but Vipin (the original bug
> > reporter) may have other thoughts on this matter.
> 
> Hi Thomas, without the fix it affects both dpdk and non dpdk application use a host or VM. My suggestion to have the fix in and port to 18.11 LTS too.

It is changing a behaviour.
I propose to test it on 19.02 and backport it in 18.11.1.

Any other opinion?