When using the generic driver (with liberty), there's a race when attaching a volume and then use the attached volume inside the VM to create a filesystem. When mkfs is called before the kernel from the service VM creates the device node (i.e. /dev/vdc) then mkfs creates a new file with size 0. The error then is:
2016-02-16 18:03:08.182 14004 ERROR manila.share.manager [req-6c441864-65d7-4e11-aaa9-65b6c9529801 ] Share instance ebae33cc-3e1b-494e-a6a1-ae54ec830c9a failed on creation.
2016-02-16 18:03:08.183 14004 WARNING manila.share.manager [req-6c441864-65d7-4e11-aaa9-65b6c9529801 ] Share instance information in exception can not be written to db because it contains {} and it is not a dictionary.
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher [req-6c441864-65d7-4e11-aaa9-65b6c9529801 ] Exception during message handling: Unexpected error while running command.
Command: None
Exit code: -
Stdout: u'Unexpected error while running command.\nCommand: sudo mkfs.ext3 /dev/vdc\nExit code: 1\nStdout: u\'Creating regular file /dev/vdc\\n\'\nStderr: u"mke2fs 1.42.11 (09-Jul-2014)\\nmkfs.ext3: Device size reported to be zero. Invalid partition specified, or\\n\\tpartition table wasn\'t reread after running fdisk, due to\\n\\ta modified partition being busy and in use. You may need to reboot\\n\\tto re-read your partition table.\\n\\n"'
Stderr: None
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher Traceback (most recent call last):
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 142, in _dispatch_and_reply
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher executor_callback))
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 186, in _dispatch
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher executor_callback)
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 129, in _do_dispatch
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher result = func(ctxt, **new_args)
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/manila/share/manager.py", line 110, in wrapped
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher return f(self, *args, **kwargs)
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/manila/share/manager.py", line 767, in create_share_instance
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher {'status': constants.STATUS_ERROR}
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 195, in __exit__
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher six.reraise(self.type_, self.value, self.tb)
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/manila/share/manager.py", line 738, in create_share_instance
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher context, share_instance, share_server=share_server)
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/manila/share/drivers/generic.py", line 123, in wrap
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher return f(self, context, *args, **kwargs)
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/manila/share/drivers/generic.py", line 218, in create_share
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher self._format_device(server_details, volume)
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/manila/share/drivers/generic.py", line 229, in _format_device
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher self._ssh_exec(server_details, command)
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/manila/share/drivers/generic.py", line 168, in _ssh_exec
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher return processutils.ssh_execute(ssh, ' '.join(command))
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher File "/usr/lib/python2.7/site-packages/oslo_concurrency/processutils.py", line 393, in ssh_execute
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher cmd=sanitized_cmd)
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher ProcessExecutionError: Unexpected error while running command.
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher Command: sudo mkfs.ext3 /dev/vdc
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher Exit code: 1
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher Stdout: u'Creating regular file /dev/vdc\n'
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher Stderr: u"mke2fs 1.42.11 (09-Jul-2014)\nmkfs.ext3: Device size reported to be zero. Invalid partition specified, or\n\tpartition table wasn't reread after running fdisk, due to\n\ta modified partition being busy and in use. You may need to reboot\n\tto re-read your partition table.\n\n"
2016-02-16 18:03:08.222 14004 ERROR oslo_messaging.rpc.dispatcher
Fix proposed to branch: master
Review: https:/