Some NFS file transfers fail and hang automounting

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Revision as of 14:50, 22 October 2010 by Amschuma (Talk | contribs)
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  • Given a file "foo" of 50Mb on a remote machine "remote".
    • This command will never finish
      <localmachine $> cp /remote_mount_point/foo bar 
    • bar will have a size less than foo.
    • automounting of the local machine is hung.
  • The following message will show up in /var/log/messages
kernel: Callback slot table overflowed
  • The problem doesn't occur if foo has a size less than 10Mb
  • The final size of bar appears to be random
  • This incident occurs with:
    sunrpc.tcp_slot_table_entries = 16
  • This incident does NOT occur with:
    sunrpc.tcp_slot_table_entries = 32
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