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[Andrey Pavlov <apavlov@xxxxxxxxxxxxxxxx>]

** Also affects: ec2-api
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1370901

Title:
  Nova EC2 doesn't create empty volume while launching an instance

Status in EC2 API:
  New
Status in OpenStack Compute (Nova):
  Confirmed

Bug description:
  AWS is able to create and attach a new empty volume while launching an instance. See http://docs.aws.amazon.com/AWSEC2/latest/CommandLineReference/ApiReference-cmd-RunInstances.html:
  ---
  To create an empty Amazon EBS volume, omit the snapshot ID and specify a volume size instead. For example: "/dev/sdh=:20".
  ---
  This can be set by run_instances parameters, and by image block device mapping structure.

  But Nova EC2 isn't able to do this:

  $ euca-run-instances --instance-type m1.nano ami-00000001 --block-device-mapping /dev/vdd=:1
  euca-run-instances: error (InvalidBDMFormat): Block Device Mapping is Invalid: Unrecognized legacy format.

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