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NFS Client Information

Created by dave. Last edited by dave, 13 years and 65 days ago. Viewed 1,754 times. #1
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How are exported file systems and client mount points tracked on the server?

  • /etc/exports contains information about how file systems should normally be exported. This is only read by exportfs.
  • /var/lib/nfs/etab contains information about what filesystems should be exported to whom at the moment.
  • /var/lib/nfs/rmtab contains a list of which filesystems actually are mounted by certain clients at the moment.
  • /proc/fs/nfs/exports contains information about what filesystems are exported to actual client (individual, not subnet or whatever) at the moment.
  • /var/lib/nfs/xtab is the same information as /proc/fs/nfs/exports but is maintained by nfs-utils instead of directly by the kernel. It is only used if /proc isn't mounted.
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This is a collection of techical information, much of it learned the hard way. Consider it a lab book or a /info directory. I doubt much of it will be of use to anyone else.

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