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Hello, I increased cinder and nova rpc resoonse time out and now it works
better.
I am going to  test it again and if the error come back, I 'll send the log
file as you suggested.
Thanks
Ignazio


Il Lun 20 Gen 2020, 16:41 Lee Yarwood <lyarwood at redhat.com> ha scritto:

> On 17-01-20 19:30:13, Ignazio Cassano wrote:
> > Hello all we are testing openstack queens cinder driver for Unity iscsi
> > (driver cinder.volume.drivers.dell_emc.unity.Driver).
> >
> > The unity storage is a Unity600 Version 4.5.10.5.001
> >
> > We are facing an issue when we try to detach volume from a virtual
> machine
> > with two or more volumes attached (this happens often but not always):
>
> Could you write this up as an os-brick bug and attach the nova-compute
> log in DEBUG showing the initial volume attachments prior to this detach
> error?
>
> https://bugs.launchpad.net/os-brick/+filebug
>
> > The following is reported nova-compute.log:
> >
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server
> > self.connector.disconnect_volume(connection_info['data'], None)
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server File
> > "/usr/lib/python2.7/site-packages/os_brick/utils.py", line 137, in
> > trace_logging_wrapper
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server return
> > f(*args, **kwargs)
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server File
> > "/usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py", line
> 274,
> > in inner
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server return
> > f(*args, **kwargs)
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server File
> >
> "/usr/lib/python2.7/site-packages/os_brick/initiator/connectors/iscsi.py",
> > line 848, in disconnect_volume
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server
> > device_info=device_info)
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server File
> >
> "/usr/lib/python2.7/site-packages/os_brick/initiator/connectors/iscsi.py",
> > line 892, in _cleanup_connection
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server path_used,
> > was_multipath)
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server File
> > "/usr/lib/python2.7/site-packages/os_brick/initiator/linuxscsi.py", line
> > 271, in remove_connection
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server
> > self.flush_multipath_device(multipath_name)
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server File
> > "/usr/lib/python2.7/site-packages/os_brick/initiator/linuxscsi.py", line
> > 329, in flush_multipath_device
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server
> > root_helper=self._root_helper)
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server File
> > "/usr/lib/python2.7/site-packages/os_brick/executor.py", line 52, in
> > _execute
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server result =
> > self.__execute(*args, **kwargs)
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server File
> > "/usr/lib/python2.7/site-packages/os_brick/privileged/rootwrap.py", line
> > 169, in execute
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server return
> > execute_root(*cmd, **kwargs)
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server File
> > "/usr/lib/python2.7/site-packages/oslo_privsep/priv_context.py", line
> 207,
> > in _wrap
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server return
> > self.channel.remote_call(name, args, kwargs)
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server File
> > "/usr/lib/python2.7/site-packages/oslo_privsep/daemon.py", line 202, in
> > remote_call
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server raise
> > exc_type(*result[2])
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server
> > ProcessExecutionError: Unexpected error while running command.
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server Command:
> > multipath -f 36006016006e04400d0c4215e3ec55757
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server Exit code: 1
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server Stdout:
> u'Jan
> > 17 16:04:30 | 36006016006e04400d0c4215e3ec55757p1: map in use\nJan 17
> > 16:04:31 | failed to remove multipath map
> > 36006016006e04400d0c4215e3ec55757\n'
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server Stderr: u''
> > 2020-01-17 16:05:11.132 6643 ERROR oslo_messaging.rpc.server
> >
> >
> > Best Regards
> >
> > Ignazio
>
> --
> Lee Yarwood                 A5D1 9385 88CB 7E5F BE64  6618 BCA6 6E33 F672
> 2D76
>
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