baremetal block device mapping is wonky

[Robert Collins]

http://169.254.169.254/latest/meta-data/block-device-mapping/root
->
/dev/sda

but this is bong - it's actually /dev/sda1 for this instance. Note that because baremetal does partition images, not disk images, specifying a partition is appropriate IMO.

[Robert Collins (lifeless)]

This is what a flavor with swap and ephemeral gives:
ubuntu@foo:~$ wget -q -O- http://169.254.169.254/latest/meta-data/block-device-mapping
ami
ephemeral0
root
swap
ubuntu@foo:~$ wget -q -O- http://169.254.169.254/latest/meta-data/block-device-mapping/ephemeral0
/dev/vdb
ubuntu@foo:~$ wget -q -O- http://169.254.169.254/latest/meta-data/block-device-mapping/root
/dev/vda
ubuntu@foo:~$ wget -q -O- http://169.254.169.254/latest/meta-data/block-device-mapping/swap
/dev/vdc
ubuntu@foo:~$

-> we should aim for this for baremetal.

[Joe Gordon (jogo)]

wget -q -O- http://169.254.169.254/latest/meta-data/block-device-mapping/ephemeral0

gets pulled from default_ephemeral_device in instances

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/52704

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/52704
Committed: http://github.com/openstack/nova/commit/32e553324c72f323ac646984b770b06cfd00198b
Submitter: Jenkins
Branch: master

commit 32e553324c72f323ac646984b770b06cfd00198b
Author: Joe Gordon <email address hidden>
Date: Fri Oct 18 13:43:52 2013 -0700

    Make baremetal support metadata for ephemeral block-device-mapping

    Make baremetal driver set instance['default_ephemeral_device'] to
    /dev/sda1 since we are using the same device for root(sda3) and
    ephemeral(sda1)

    Change-Id: Ib2076198eacb0ea61706043b42d673c35d26f5d1
    Partial-Bug: #1239524

[Ben Nemec (bnemec)]

This appears to have been fixed in Nova, closing the TripleO bug as well.