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Daily Crap 2009-04-21

  1. Useful 9fans post today by Anthony Sorace:

    If you're looking to do ad hoc sharing, the easiest way is probably
with listen1, exportfs, and import. I just tested this in two 9vx
instances on the same machine (which already had my normal one
running):

9vx 1:
       :; 9fs wiki
       post...
       :; ls /mnt/wiki | wc
           235     235    6413
       :; aux/listen1 -tv 'tcp!*!12345' /bin/exportfs

(the -v isn't really needed there)

9vx 2:
       :; ls /mnt/wiki
       :; import -A tcp!localhost!12345 /mnt/wiki
       :; ls /mnt/wiki | wc
           235     235    6413

aux/listen1 grabs a network port (tcp port 12345 on all interfaces, in
this invocation) and when a new connection comes in, runs
/bin/exportfs, which has a little protocol to negotiate what namespace
to export and then exports it. on the other host, import dials the
exportfs listener started above and mounts the /mnt/wiki exported
there on its own namespace.

Posted Apr 21, 2009, in the afternoon.

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