yahoo-eng-team team mailing list archive

[Matt Riedemann <mriedem@xxxxxxxxxx>]

Since the v2.1 API was still experimental in Juno I don't think this is
worth fixing there.

** Also affects: nova/juno
   Importance: Undecided
       Status: New

** Also affects: nova/kilo
   Importance: Undecided
       Status: New

** Changed in: nova/juno
       Status: New => Won't Fix

** Changed in: nova/kilo
       Status: New => Fix Committed

** Changed in: nova/kilo
     Assignee: (unassigned) => Matt Riedemann (mriedem)

** Changed in: nova/kilo
   Importance: Undecided => High

** Tags removed: juno-backport-potential

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1491325

Title:
  nova api v2.1 does not allow to use autodetection of volume device
  path

Status in OpenStack Compute (nova):
  Fix Committed
Status in OpenStack Compute (nova) juno series:
  Won't Fix
Status in OpenStack Compute (nova) kilo series:
  Fix Committed
Status in python-novaclient:
  Fix Released

Bug description:
  Using API v2.1 we are forced to provide device path attaching a volume
  to an instance.

  using API v2.0 it allowed to provide 'auto' and in this case Nova
  calculated it by itself.

  It is very useful when we do not care about exact device path.

  using APi v2.1 Nova, at first verifies request body [1] and only then
  have logic to autodetect "device path". So, either autodetect is dead
  code now or request validation should be changed.

  For the moment, this bug is blocker for Manila project.

  We get one of two errors:

  Returning 400 to user: Invalid input for field/attribute device.
  Value: None. None is not of type 'string' __call__

  or

  Returning 400 to user: Invalid input for field/attribute device.
  Value: auto. u'auto' does not match
  '(^/dev/x{0,1}[a-z]{0,1}d{0,1})([a-z]+)[0-9]*$'

  Where Nova client says explicitly:

  $ nova help volume-attach
  usage: nova volume-attach <server> <volume> [<device>]

  Attach a volume to a server.

  Positional arguments:
    <server>  Name or ID of server.
    <volume>  ID of the volume to attach.
    <device>  Name of the device e.g. /dev/vdb. Use "auto" for autoassign (if supported)

  That "device" is optional and can be set to 'auto'.

  [1]
  https://github.com/openstack/nova/blob/b7c8a73824211db9627962abd31b8801cc2c2880/nova/api/openstack/compute/volumes.py#L270

To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1491325/+subscriptions