On Mon, Dec 04, 2017 at 09:39:55AM +0100, Emil Flink wrote: > > My issue is that a client mounting a NFS share frequently locks up > with massive amounts of "nfs4_reclaim_open_state: Lock reclaim > failed!" in the kernel logs. Meanwhile the NFS server does not log any > errors as far as I can tell. > > I only encounter this when the client is doing a lot of I/O against > the NFS share. > > To recover from this I have to kill all processes on the client using > the NFS share, unmount the NFS share and remount it. > > The NFS export is mounted with: > 10.0.1.203:/nfs/lxc-office on /var/lib/lxc type nfs4 > (rw,noatime,vers=4.2,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=10.0.1.231,local_lock=none,addr=10.0.1.203) > I believe that this sounds very similar to the issue I encountered following a jessie -> stretch upgrade of my NFS server:
https://bugs.debian.org/880549 However, I am not sure how sec=sys relates to the sec=krb5p setting that I had determined was the culprit in my case. Regards, -Roberto -- Roberto C. Sánchez