Unable to remove a LVM volume (dd not in nova_sudoers)

[Razique Mahroua]

After I creat my VG "nova-volumes", and create a volume into it via:
$ euca-create-volume -s 5 -z nova

The volumes appears well, and LVM VG has a new logical volume with the same size, I can attach it, use it.

When I try to delete it with euca-delete-volume, i've the following status :
VOLUME vol-00000005 6 nova error_deleting (my_project, nova-cc1, None, None) 2011-06-10T08:46:33Z

and lvdisplay shows it :
  --- Logical volume ---
  LV Name /dev/nova-volumes/volume-00000005
  VG Name nova-volumes
  LV UUID ofhGOF-hjTQ-eh2f-gsZZ-ZHQc-XAUC-i1nZp1
  LV Write Access read/write
  LV Status available
  # open 0
  LV Size 6,00 GiB
  Current LE 1536
  Segments 1
  Allocation inherit
  Read ahead sectors auto
  - currently set to 256
  Block device 251:0

If I try to delete it another time, I've the following error :

root@nova-cc1:~# euca-delete-volume vol-00000005
ApiError: ApiError: Volume status must be available

while the nova-manage volume delete doesn't shows any error.

In order to get rid of the volume, I have to :
1- Connect to mysql, set the value "deleted" to 1
2- run a lvremove /dev/nova-volumes/volume-00000005

[Razique Mahroua (razique)]

The nova-manage.log :
2011-06-10 10:47:10,666 ERROR nova [-] Exception during message handling
(nova): TRACE: Traceback (most recent call last):
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/rpc.py", line 188, in _receive
(nova): TRACE: rval = node_func(context=ctxt, **node_args)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/volume/manager.py", line 144, in delete_volume
(nova): TRACE: self.driver.delete_volume(volume_ref)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/volume/driver.py", line 120, in delete_volume
(nova): TRACE: 'bs=1M')
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/utils.py", line 173, in execute
(nova): TRACE: cmd=' '.join(cmd))
(nova): TRACE: ProcessExecutionError: Unexpected error while running command.
(nova): TRACE: Command: sudo dd if=/dev/zero of=/dev/mapper/nova--volumes-volume--00000005 count=6144 bs=1M
(nova): TRACE: Exit code: 1
(nova): TRACE: Stdout: ''
(nova): TRACE: Stderr: 'sudo: no tty present and no askpass program specified\n'
(nova): TRACE:
2011-06-10 10:49:52,192 INFO nova.volume.driver [-] Skipping remove_export. No iscsi_target is presently exported for volume: 5
2011-06-10 10:49:52,260 ERROR nova [-] Exception during message handling
(nova): TRACE: Traceback (most recent call last):
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/rpc.py", line 188, in _receive
(nova): TRACE: rval = node_func(context=ctxt, **node_args)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/volume/manager.py", line 144, in delete_volume
(nova): TRACE: self.driver.delete_volume(volume_ref)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/volume/driver.py", line 120, in delete_volume
(nova): TRACE: 'bs=1M')
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/utils.py", line 173, in execute
(nova): TRACE: cmd=' '.join(cmd))
(nova): TRACE: ProcessExecutionError: Unexpected error while running command.
(nova): TRACE: Command: sudo dd if=/dev/zero of=/dev/mapper/nova--volumes-volume--00000005 count=6144 bs=1M
(nova): TRACE: Exit code: 1
(nova): TRACE: Stdout: ''
(nova): TRACE: Stderr: 'sudo: no tty present and no askpass program specified\n'
(nova): TRACE:
2011-06-10 10:49:58,934 INFO nova.volume.driver [-] Skipping remove_export. No iscsi_target is presently exported for volume: 5
2011-06-10 10:49:59,003 ERROR nova [-] Exception during message handling
(nova): TRACE: Traceback (most recent call last):
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/rpc.py", line 188, in _receive
(nova): TRACE: rval = node_func(context=ctxt, **node_args)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/volume/manager.py", line 144, in delete_volume
(nova): TRACE: self.driver.delete_volume(volume_ref)
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/volume/driver.py", line 120, in delete_volume
(nova): TRACE: 'bs=1M')
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/utils.py", line 173, in execute
(nova): TRACE: cmd=' '.join(cmd))
(nova): TRACE: ProcessExecutionError: Unexpected error while running command.
(nova): TRACE: Command: sudo dd if=/dev/zero of=/dev/mapper/nova--volumes-volume--00000005...

[Thierry Carrez (ttx)]

The problem is that "dd" is not in the nova_sudoers, so nova can't run "sudo dd". It's a packaging issue, deferring to Ubuntu packaging team.

[Thierry Carrez (ttx)]

as of packaging rev 143 and 2011.3~bzr1108-0ubuntu1