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

[Burakov, Anatoly]

On 14-Nov-18 3:44 AM, Thomas Monjalon wrote:
> 14/11/2018 04:24, Varghese, Vipin:
>> Tested-by: Vipin Varghese <vipin.varghese at 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 at dpdk.org
>>>>>
>>>>> Reported-by: Vipin Varghese <vipin.varghese at intel.com>
>>>>>
>>>>> Signed-off-by: Anatoly Burakov <anatoly.burakov at 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?
> 

That would probably be the best compromise IMO.

-- 
Thanks,
Anatoly