Monday, August 11, 2014

Mounting XtreemFS Volumes using Autofs

Autofs is a useful tool to mount networked file systems automatically on access, for instance on machines without a permanent network connectivity like notebooks. We prepared a short tutorial that describes how to use automounter for XtreemFS volumes.

This assumes you'd like a shared directory called /scratch/xtfs/shared across all of your machines and anyone can read/write to it. While I use /scratch in this example, more traditional /net could be used instead.
  • Assume all of XtreemFS is installed, set up properly, volumes are created...
  • Have autofs installed (and started or not).
  • Create an /etc/auto.master with these contents:
# All xtreemfs volumes will be automounted in /scratch/xtfs
/scratch/xtfs   /etc/auto.xtfs
# Include /etc/auto.master.d/*.autofs
# Include central master map if it can be found using
# nsswitch sources.
# Note that if there are entries for /net or /misc (as
# above) in the included master map any keys that are the
# same will not be seen as the first read key seen takes
# precedence.
  • Then create an /etc/auto.xtfs (which you'll have to modify for your DIR).
shared -fstype=fuse,allow_other
  • Restart autofs (A command similar to this):
sudo /etc/init.d/autofs restart
  • Do this for each machine on which you'd like to use autofs.
Thanks to Pete for contributing this tutorial!

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