[Arm-dev] Weird issue with NFSv4

[Stephan Guilloux]

Le 19/03/2019 à 12:29, Manuel Wolfshant a écrit :
> On 3/19/19 1:05 PM, Stephan Guilloux wrote:
>>
>> Le 19/03/2019 à 11:57, Pablo Sebastián Greco a écrit :
>>>
>>> El 19/3/19 a las 07:47, Stephan Guilloux escribió:
>>>> Hi there.
>>>>
>>>> Strange issue with NFSv4 this morning.
>>>> RPI3b+ with kernel 103 and fresh yum update, set up as NFSv4 client.
>>>>
>>>> Trying to copy a whole folder with a few GB (many .rpm & .tgz and a 
>>>> few .img), from NFS mounted source to local filesystem.
>>>>     (cd /shared.nfs ; tar c) | (cd /local ; tar x)
>>>>
>>>> After a while ...
>>>> - PING to the RPI works.
>>>> - SSH sessions got frozen and login is impossible, even with USB 
>>>> keyboard on the RPI.
>>>> - Sometimes, I do see some kernel backtrace on the VGA, but not 
>>>> always.
>>>> As I have to switch off the RPI, there is nothing left in 
>>>> /var/log/message when system is back.
>>>>
>>>> If I do this copy with full SSH, the copy works perfectly well.
>>>>     (ssh xxx "cd /xxx ; tar c") | (cd /local ; tar x)
>>>>
>>>> I have the feeling that the system hangs often on the same huge 
>>>> file, but when I do copy it manually, even in a loop ... nothin 
>>>> happens.
>>>>
>>>> Any idea ?
>>>>
>>>>
>>> Stephan, was 4.14.101 your last "good" kernel?
>>> We also have 4.14.103 and yesterday 4.14.106 was released.
>> well ...
>> saw that this morning, but I'm not sure we were doing these 
>> operations in the past.
>>
>> I can try the 106 this afternoon. I'll keep you posted.
>
> I'd try a different kernel... and also a different SD card. I've seen 
> a fair share of oddities that boiled down to being SD card issues.
>
>
Doubtful on the SD-Card. This one is from a good brand, and used for 
some time without any trouble...
Moreover, I would not have NFS related backtrace ...

Tests running with 4.14.106... results expected soon.

>
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