Hello, I have installed OpenStack cluster with Mirantis Fuel 7.0. Back end storage is ceph and works great.
But when I try to activate ssd caching tier. All my working VMs suddenly stops working and I can not create new instance. If I disable caching tier, everything returns to normal. My Ceph Version: 0.80.9 I have following this article for cache tiering: https://github.com/infn-bari-school/ceph/wiki/Cache-Tiering Cache tiering works and I have confirmed. Here is the error I got from working VM. error listing images File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 349, in decorated_function return function(self, context, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2766, in terminate_instance do_terminate_instance(instance, bdms) File "/usr/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py", line 445, in inner return f(*args, **kwargs) File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2764, in do_terminate_instance self._set_instance_error_state(context, instance) File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 85, in __exit__ six.reraise(self.type_, self.value, self.tb) File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2754, in do_terminate_instance self._delete_instance(context, instance, bdms, quotas) File "/usr/lib/python2.7/dist-packages/nova/hooks.py", line 149, in inner rv = f(*args, **kwargs) File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2723, in _delete_instance quotas.rollback() File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 85, in __exit__ six.reraise(self.type_, self.value, self.tb) File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2693, in _delete_instance self._shutdown_instance(context, instance, bdms) File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2620, in _shutdown_instance requested_networks) File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 85, in __exit__ six.reraise(self.type_, self.value, self.tb) File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2609, in _shutdown_instance block_device_info) File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 751, in destroy destroy_disks, migrate_data) File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 865, in cleanup self._cleanup_rbd(instance) File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 928, in _cleanup_rbd LibvirtDriver._get_rbd_driver().cleanup_volumes(instance) File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/rbd_utils.py", line 275, in cleanup_volumes volumes = rbd.RBD().list(client.ioctx) File "/usr/lib/python2.7/dist-packages/rbd.py", line 276, in list raise make_ex(ret, 'error listing images')
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