I have a serious issue with NFS mounts going stale between some RHEL servers and a Solaris 10 x86 server.
I am presenting a number of NFS shares from a Solaris 10 x86 server and mounting them on a series of RHEL servers. Occasionally I need to take the Solaris server offline for software updates, this causes a large number of the LINUX servers to report that the NFS mounts have gone stale. There are around 400 RHEL servers in total and manually refreshing the mount points is a seriously time consuming task.
Does anyone have any insight as to why the mounts go stale and what, if any, automation could be put in place to re-connect the shares to save my UNIX managers from manually re-connecting each of the mounts.