Hi all, So, I've recently (in the past week or so) started having an issue with _an_ SL6.4 system (only one), wherein sometimes it will fail to NFS mount otherwise-available mounts (the NFS servers will not log an error or success when this transpires), and IO operations to some mountpoints will return EIO.
But the mounts themselves, insofar as I can quickly see, are perfectly fine - the servers are reachable by both this and every other machine, no errors are being logged client or server-side, and the EIO errors vanish within 5 minutes of anyone observing them. The NFS servers are running SL5, SL6, or Illumos derivatives; some are in another datacenter entirely, some are on the same switch as the server in question. It's only ever this server which encounters this difficulty, and only in the past 2 weeks. LOGGING="verbose" in sysconfig/autofs doesn't produce any output; I've tried changing it to debug in the hope that it actually produces something. Anyone encountered this and know where I should be looking for a trail of bloody fingerprints? Thanks, - Rich