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[John Smith <lbalbalba@xxxxxxxxx>]

Invalid. QEMU and KVM only support 2GB of memory on a 32-bit host. This
is the reason the instance doesnt launch.

** Changed in: nova
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1257896

Title:
  nova scheduler (devstack) doesnt seem to honor
  'scheduler_default_filters = AllHostsFilter' in nova.conf

Status in OpenStack Compute (Nova):
  Invalid

Bug description:
  When setting 'scheduler_default_filters = AllHostsFilter' in nova.conf
  on devstack, the default filters (like 'RamFilter') are still used.


  Steps to reproduce:

  
  ./stack.sh
  export OS_USERNAME=admin
  export OS_PASSWORD=password
  export OS_TENANT_NAME=demo
  export OS_AUTH_URL=http://192.168.126.142:5000/v2.0/

  source /usr/local/src/devstack/openrc admin

  vi /etc/nova/nova.conf
  Add 'scheduler_default_filters = AllHostsFilter'.
  use 'screen -r' to restart nova scheduler.

  wget https://launchpadlibrarian.net/83303699/cirros-0.3.0-i386-disk.img
  glance image-create --name=cirros-0.3.0-i386 --is-public=true --container-format=bare --disk-format=qcow2 < cirros-0.3.0-i386-disk.img

  launch a flavor that woud overallocate/overcommit ram memory: nova boot --flavor m1.foo --image cirros-0.3.0-i386 myvm
  nova show myvm

  The instance fails to launch: 'No valid host was found.'. Launching a
  smaller flavor, like 'm1.nano', does succeed.

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