Hi Olivier, On Mon, Nov 22, 2021 at 09:27:26AM +0000, Olivier Monaco wrote: > Hi Salvatore, > > Sorry for my very very late answer. > > I tried many actions to reproduce and/or fix this problem. We > upgraded our kernel to the lastest backport version for Buster but > the issue was still there. We upgraded to Bullseye at the end of > October but today this issue occurred again. > > I think it related to > https://lore.kernel.org/linux-nfs/yv3vdqopvgxc%[email protected]/ > > I just send an email to this thread. > > Something that may be important: our groups of servers are used to > host websites, some with only one website, some with many. For now, > this issue only occurred on NFS servers part of a group with many > websites. But one of the most loaded NFS server is also used only > for one website and has never had this issue. May be this issue > occurs only when the NFS server is serving many different files.
I was never able to reliably reproduce the issue myself, but upstream now thinks to have isolated the issue and should be fixed with: https://git.kernel.org/linus/548ec0805c399c65ed66c6641be467f717833ab5 Fixes are as well queued to stable series. Regards, Salvatore
