I had a shared folder on server (ubuntu 12.04) that was exported via nfsv4. Then I had to switch to RAID0 and mount it to the same mount point that had previous shared folder.
service nfs-kernel-server stop umount /mount-point mount -t ext3 /dev/md0p1 /mount-point service nfs-kernel-server start exportfs -f
server:/mount-point /client-mount-point nfs defaults 0 0
After that, every time I try to ls /client-mount-point I get Stale NFS handle error.
umount -l /client-mount-point
umount -f /client-mount-point
do not help.
Unfortunately, rebooting clients is not an option