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.