nfs4_reclaim_open_state: Lock reclaim failed!
I'm not sure where to go with this issue so please free to point me to
a more suitable forum if necessary.
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
Both the server and the client is running up-to-date installations of
Debian 9 ("stretch"), meaning kernel 4.9.0-4 and nfs-common /