Yes, both clients and server are centos 7.6. And the NFS4ERR_DELAY is a response to a REMOVE. I will need to check on the locks the next time it happens. Can you share what you are thinking? thanks, Kazi On Fri, Sep 24, 2021 at 11:39 AM J. Bruce Fields <bfields@xxxxxxxxxxxx> wrote: > > On Wed, Sep 22, 2021 at 03:56:23PM -0500, Kazi Anwar wrote: > > We are running nfs v 4.1 on centos 7.6. > > We are seeing an NFS issue where when files/dirs are deleted from a > > client they are occasionally stuck at unlinkat system call(according > > to strace its stuck for 100.5 secs every time). Can anyone explain > > this behavior? > > Running tcp dump shows nfs4err_delay status sent from the server to > > the stuck client. > > Client and server are both centos 7.6? > > Is the NFS4ERR_DELAY a reponse to a REMOVE? > > Does /proc/locks show a delegation held on the file the client's trying > to remove? > > --b.
