1. 03 Sep, 2010 1 commit
  2. 22 Jul, 2010 1 commit
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  4. 23 Jun, 2010 1 commit
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  10. 23 Dec, 2009 1 commit
  11. 22 Dec, 2009 5 commits
  12. 21 Dec, 2009 1 commit
    • Leigh B. Stoller's avatar
      New approach to dealing with nodes that fail to boot is os_setup, and · 5cf6aad2
      Leigh B. Stoller authored
      land in hwdown.
      Currently, if a node fails to boot in os_setup and the node is running
      a system image, it is moved into hwdown. 99% of the time this is
      wasted work; the node did not fail for hardware reasons, but for some
      other reason that is transient.
      The new approach is to move the node into another holding experiment,
      emulab-ops/hwcheckup. The daemon watches that experiment, and nodes
      that land in it are freshly reloaded with the default image and
      rebooted. If the node reboots okay after reload, it is released back
      into the free pool. If it fails any part of the reload/reboot, it is
      officially moved into hwdown.
      Another possible use; if you have a suspect node, you go wiggle some
      hardware, and instead of releasing it into the free pool, you move it
      into hwcheckup, to see if it reloads/reboots. If not, it lands in
      hwdown again. Then you break out the hammer.
      Most of the changes in Node.pm, libdb.pm, and os_setup are
      organizational changes to make the code cleaner.
  13. 12 Oct, 2009 1 commit
    • David Johnson's avatar
      Add the ability to load images on virtnodes. For now, we just overload · c6c57bc9
      David Johnson authored
      the tb-set-node-os command with a second optional argument; if that is
      present, the first arg is the child OS and the second is the parent OS.
      We add some new features in ptopgen (OS-parentOSname-childOSname) based
      off a new table that maps which child OSes can run on which parents, and
      the right desires get added to match.  We setup the reloads in os_setup
      along with the parents.  Also needed a new opmode, RELOAD-PCVM, to handle
      all this.
      For now, users only have to specify that their images can run on pcvms, a
      special hack for which type the images can run on.  This makes sense in
      general since there is no point conditionalizing childOS loading on
      hardware type at the moment, but rather on parentOS.  Hopefully this stuff
      wiill mostly work on shared nodes too, although we'll have to be more
      aggressive on the client side garbage collecting old frisbee'd images for
      long-lived shared hosts.
      I only made these changes in libvtop, so assign_wrapper folks are left in
      the dark.
      Currently, the client side supports frisbee.  Only in openvz for now, and
      this probably breaks libvnode_xen.pm.  Also in here are some openvz
      improvements, like ability to sniff out which network is the public
      control net, and which is the fake virtual control net.
  14. 24 Sep, 2009 1 commit
  15. 23 Jul, 2009 1 commit
  16. 15 Jul, 2009 1 commit
    • Leigh B. Stoller's avatar
      Add MaxShareCount() method to get the pcvm share count. · af2d65cb
      Leigh B. Stoller authored
      Add checks in CreateVnodes() to make sure that when creating
      a vnode on a node, it is either reserved to the experiment or
      is a shared experiment. This check is after the table lock to
      avoid races with the shared pool expanding and contracting.
  17. 09 Jul, 2009 1 commit
  18. 23 Jun, 2009 1 commit
  19. 11 Jun, 2009 1 commit
    • Leigh B. Stoller's avatar
      Add method to flush and reload the reservation info from the node · 39a76b80
      Leigh B. Stoller authored
      Method to find out if a physical node has any virtual nodes allocated
      to it.
      Method to release the bandwidth that a vnode on a shared host is
      using. This uses the vinterfaces table to find out what link is using,
      and then increments the remaining_bandwidth of the interface_state
      table. Tables are locked of course.
      Add method to allocate an rtabid, since like ssh ports on remote
      nodes, the rtabid is now a shared counter on a sharedhost.
      Hmm, a change to the TipServer() method that was for using console on
  20. 15 May, 2009 1 commit
  21. 01 May, 2009 1 commit
    • Leigh B. Stoller's avatar
      Add sharing_mode() method. · 8ca449ef
      Leigh B. Stoller authored
      Move the important part of os_select into this library as a method so
      that we can just do it from the mapper wrapper without having to call
      a shell script for each node in the topo (which on a 2000 node
      experiment, takes 45 minutes).
  22. 21 Apr, 2009 1 commit
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  34. 09 Jul, 2008 1 commit