Hello , On centos kvm nodes, setting skip_kpartx no in multipath.conf solved the problem and now os_brick can flush maps Ignazio Il giorno lun 3 feb 2020 alle ore 15:13 Ignazio Cassano < ignaziocassano@gmail.com> ha scritto:

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).

We also facing the same issue live migrating a virtual machine.

Multimaph -f does not work because it returns "map in use" and the volume is not detached.

Attached here there hare nova-compute e volume logs in debug mode.

Could anyone help me ?

Ignazio