1. 20 Jun, 2001 1 commit
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  7. 30 Mar, 2001 1 commit
    • Leigh Stoller's avatar
      Reloading daemon. Looks for free nodes that have not been reloaded · 74d21844
      Leigh Stoller authored
      since the last reservation (as determined by last_reservation table).
      Picks one (randomly) from that set of nodes, and calls sched_reload on
      it. Then waits until the node has finished reloading, as determined by
      the reserved table, which gets cleared by the tmcd when the node first
      reboots after a scheduled reload. Sleeps 30 seconds, and then goes
      around again. So at most one node is tied up in a reload at a time,
      which seems like a good balance between trying to keep the machines in
      a pristine state, and having nodes available for use.
      
      The advantage of this approach is that instead of calling sched_reload
      on 40 nodes (after generating a new image) and watching the network
      meltdown, we can let the nodes reload at a slower pace. We could call
      sched_reload on allocated nodes so that they will load when freed, but
      we run into the problem of big experiments ending and causing meltdown.
      
      The downside is that this approach is a little too aggressive. Nodes
      will end up reloading after just a single experiment. Need finer grain
      control over when to reload, but I will leave that as an exercise for
      later.
      74d21844
  8. 29 Mar, 2001 1 commit
    • Leigh Stoller's avatar
      A set of change for exporting project and user directories only to · 407cd1ac
      Leigh Stoller authored
      machines in the experiment. exports_setup runs on paper and queries
      the DB, generating a set of export lines. That is sent over to
      plastic, and piped into exports_setup.proxy, which generates a new
      /etc/exports file and restarts mountd. All of the client setup scripts
      have been changed to mount the project and user directories.
      407cd1ac
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