test_device_tagging tempest test fails with "mount: mounting /dev/sr0 on /mnt failed: Device or resource busy"

[Ihar Hrachyshka]

http://logs.openstack.org/56/468056/4/check/gate-tempest-dsvm-neutron-full-ubuntu-xenial/271b8fb/console.html

2017-06-02 15:20:49.385605 | Traceback (most recent call last):
2017-06-02 15:20:49.385655 | File "tempest/test.py", line 96, in wrapper
2017-06-02 15:20:49.385691 | return f(self, *func_args, **func_kwargs)
2017-06-02 15:20:49.385744 | File "tempest/api/compute/servers/test_device_tagging.py", line 267, in test_device_tagging
2017-06-02 15:20:49.385789 | self.ssh_client.exec_command('sudo mount %s /mnt' % dev_name)
2017-06-02 15:20:49.385837 | File "tempest/lib/common/utils/linux/remote_client.py", line 30, in wrapper
2017-06-02 15:20:49.385874 | return function(self, *args, **kwargs)
2017-06-02 15:20:49.385925 | File "tempest/lib/common/utils/linux/remote_client.py", line 96, in exec_command
2017-06-02 15:20:49.385973 | return self.ssh_client.exec_command(cmd)
2017-06-02 15:20:49.386016 | File "tempest/lib/common/ssh.py", line 202, in exec_command
2017-06-02 15:20:49.386047 | stderr=err_data, stdout=out_data)
2017-06-02 15:20:49.386170 | tempest.lib.exceptions.SSHExecCommandFailed: Command 'set -eu -o pipefail; PATH=$PATH:/sbin; sudo mount /dev/sr0 /mnt', exit status: 255, stderr:
2017-06-02 15:20:49.386221 | mount: mounting /dev/sr0 on /mnt failed: Device or resource busy

This is Pike code.

[Sean McGinnis (sean-mcginnis)]

This doesn't appear to have anything to do with Cinder.

[Sean Dague (sdague)]

Automatically discovered version pike in description. If this is incorrect, please update the description to include 'nova version: ...'

[Sean Dague (sdague)]

Is this a timing concern on tempest where it is asking for the mount too soon?

[chandan kumar (chkumar246)]

@Ihar, Please update this bug.

[Launchpad Janitor (janitor)]

[Expired for OpenStack Compute (nova) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for tempest because there has been no activity for 60 days.]