nova volume-attach gives no error if attach fails

[Vasyl Khomenko]

I try to attach volume. it fails but no error given. Yes, there is error in log.

$nova volume-list
+----+-----------+--------------+------+-------------+-------------+
| ID | Status | Display Name | Size | Volume Type | Attached to |
+----+-----------+--------------+------+-------------+-------------+
| 2 | available | None | 1 | None | |
+----+-----------+--------------+------+-------------+-------------+

$nova volume-attach f9ac80e3-8c44-4d06-8feb-78c5bea466f8 2 /dev/vdb

$nova volume-list
+----+-----------+--------------+------+-------------+-------------+
| ID | Status | Display Name | Size | Volume Type | Attached to |
+----+-----------+--------------+------+-------------+-------------+
| 2 | available | None | 1 | None | |
+----+-----------+--------------+------+-------------+-------------+

# tail -f /var/log/nova/nova-compute.log
2012-05-31 11:15:20 TRACE nova.rpc.amqp File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
2012-05-31 11:15:20 TRACE nova.rpc.amqp self.gen.next()
2012-05-31 11:15:20 TRACE nova.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1721, in attach_volume
2012-05-31 11:15:20 TRACE nova.rpc.amqp mountpoint)
2012-05-31 11:15:20 TRACE nova.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 114, in wrapped
2012-05-31 11:15:20 TRACE nova.rpc.amqp return f(*args, **kw)
2012-05-31 11:15:20 TRACE nova.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/connection.py", line 542, in attach_volume
2012-05-31 11:15:20 TRACE nova.rpc.amqp raise exception.DeviceIsBusy(device=mount_device)
2012-05-31 11:15:20 TRACE nova.rpc.amqp DeviceIsBusy: The supplied device (vdb) is busy.
2012-05-31 11:15:20 TRACE nova.rpc.amqp

[Koji (kj-tanaka)]

What will happen when you try vdc instead of vdb? vdb can probably exist on your instance (maybe with 20GB).

Thanks.

[Koaps (koaps)]

I am getting the same thing except I'm using vdc.

2012-10-14 00:33:47 TRACE nova.compute.manager [instance: 678608e9-6e1f-4309-ac59-1c77a490fdd0] Traceback (most recent call last):
2012-10-14 00:33:47 TRACE nova.compute.manager [instance: 678608e9-6e1f-4309-ac59-1c77a490fdd0] File "/usr/lib/python2.6/site-packages/nova-2013.1-py2.6.egg/nova/compute/manager.py", line 2017, in _attach_volume
2012-10-14 00:33:47 TRACE nova.compute.manager [instance: 678608e9-6e1f-4309-ac59-1c77a490fdd0] mountpoint)
2012-10-14 00:33:47 TRACE nova.compute.manager [instance: 678608e9-6e1f-4309-ac59-1c77a490fdd0] File "/usr/lib/python2.6/site-packages/nova-2013.1-py2.6.egg/nova/exception.py", line 117, in wrapped
2012-10-14 00:33:47 TRACE nova.compute.manager [instance: 678608e9-6e1f-4309-ac59-1c77a490fdd0] temp_level, payload)
2012-10-14 00:33:47 TRACE nova.compute.manager [instance: 678608e9-6e1f-4309-ac59-1c77a490fdd0] File "/usr/lib64/python2.6/contextlib.py", line 23, in __exit__
2012-10-14 00:33:47 TRACE nova.compute.manager [instance: 678608e9-6e1f-4309-ac59-1c77a490fdd0] self.gen.next()
2012-10-14 00:33:47 TRACE nova.compute.manager [instance: 678608e9-6e1f-4309-ac59-1c77a490fdd0] File "/usr/lib/python2.6/site-packages/nova-2013.1-py2.6.egg/nova/exception.py", line 92, in wrapped
2012-10-14 00:33:47 TRACE nova.compute.manager [instance: 678608e9-6e1f-4309-ac59-1c77a490fdd0] return f(*args, **kw)
2012-10-14 00:33:47 TRACE nova.compute.manager [instance: 678608e9-6e1f-4309-ac59-1c77a490fdd0] File "/usr/lib/python2.6/site-packages/nova-2013.1-py2.6.egg/nova/virt/libvirt/driver.py", line 660, in attach_volume
2012-10-14 00:33:47 TRACE nova.compute.manager [instance: 678608e9-6e1f-4309-ac59-1c77a490fdd0] raise exception.DeviceIsBusy(device=mount_device)
2012-10-14 00:33:47 TRACE nova.compute.manager [instance: 678608e9-6e1f-4309-ac59-1c77a490fdd0] DeviceIsBusy: The supplied device (vdc) is busy.