NFS Issue, C7

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Actually, with C6, too. We’ve been fighting a problem with a server with a RAID appliance that’s having issues. It’s also serving /home/* and project directories for one team. What happens is when the issues happen, NFS on the other servers they use, of course, gags with timeouts.

Now, my question is this: if we go to reboot one of the other servers where one or more home directories is being exported to, and is mounted by autofs, it hangs, and will *not* reboot, because it can’t let go of the NFS-mounted directory, with the result that we have to physically go into the room and power cycle the box.

Is there any way to configure NFS such that if a system is going down, NFS
will wait a few minutes while it retries, then time out and let it reboot?