Hello Cephers, On a new cluster, I only have 2 RBD block images, and the Dashboard doesn't manage to list them correctly. I have this message : Warning Displaying previously cached data for pool veeam-repos. Sometime it disappears, but as soon as I reload or return to the listing page, it's there. What I've seen, is a high CPU load due to ceph-mgr on the active manager. And also stack-traces like this : 2021-01-15T14:41:12.061+0100 7f7f3fec4700 0 [dashboard ERROR exception] Dashboard Exception Traceback (most recent call last): File "/usr/share/ceph/mgr/dashboard/services/exception.py", line 94, in dashboard_exception_handler return handler(*args, **kwargs) File "/usr/lib/python3/dist-packages/cherrypy/_cpdispatch.py", line 60, in __call__ return self.callable(*self.args, **self.kwargs) File "/usr/share/ceph/mgr/dashboard/controllers/__init__.py", line 666, in inner ret = func(*args, **kwargs) File "/usr/share/ceph/mgr/dashboard/controllers/__init__.py", line 861, in wrapper return func(*vpath, **params) File "/usr/lib/python3.6/contextlib.py", line 52, in inner return func(*args, **kwds) File "/usr/lib/python3.6/contextlib.py", line 52, in inner return func(*args, **kwds) File "/usr/share/ceph/mgr/dashboard/controllers/rbd.py", line 86, in list return self._rbd_list(pool_name) File "/usr/share/ceph/mgr/dashboard/controllers/rbd.py", line 76, in _rbd_list status, value = RbdService.rbd_pool_list(pool) File "/usr/share/ceph/mgr/dashboard/tools.py", line 254, in wrapper return rvc.run(fn, args, kwargs) File "/usr/share/ceph/mgr/dashboard/tools.py", line 242, in run raise ViewCacheNoDataException() dashboard.exceptions.ViewCacheNoDataException: ViewCache: unable to retrieve data Also that, since I changed some features back and forth on one image : 2021-01-18T11:13:26.383+0100 7f00199ca700 0 [dashboard ERROR frontend.error] (https://fidcl-mrs4-sto-sds.fidcl.cloud:8443/#/block/rbd/edit/veeam- repos%252Fveeam-repo2-vol1): Cannot read property 'features_name' of undefined TypeError: Cannot read property 'features_name' of undefined at https://fidcl-mrs4-sto-sds.fidcl.cloud:8443/1.9e79c41bbaed982a50af.js:1:1211... at Array.forEach (<anonymous>) at R.deepBoxCheck (https://fidcl-mrs4-sto-sds.fidcl.cloud:8443/1.9e79c41bbaed982a50af.js:1:1208...) at R.featureFormUpdate (https://fidcl-mrs4-sto-sds.fidcl.cloud:8443/1.9e79c41bbaed982a50af.js:1:1219...) at https://fidcl-mrs4-sto-sds.fidcl.cloud:8443/1.9e79c41bbaed982a50af.js:1:1192... at d.a [as _next] (https://fidcl-mrs4-sto-sds.fidcl.cloud:8443/main.c43d13b597196a5f022f.js:2:9...) at d.__tryOrUnsub (https://fidcl-mrs4-sto-sds.fidcl.cloud:8443/main.c43d13b597196a5f022f.js:2:7...) at d.next (https://fidcl-mrs4-sto-sds.fidcl.cloud:8443/main.c43d13b597196a5f022f.js:2:7...) at l._next (https://fidcl-mrs4-sto-sds.fidcl.cloud:8443/main.c43d13b597196a5f022f.js:2:7...) at l.next (https://fidcl-mrs4-sto-sds.fidcl.cloud:8443/main.c43d13b597196a5f022f.js:2:7...) But that's perhaps just becaus I open an Edit window on the image and it does not have the datas. The Edit window is empty, and I can't edit things, especially, I wan't to resize the image. Finally, I find a similar bug already registered here, but that seems resolved for the owner : https://tracker.ceph.com/issues/45308 Mmmm, as I read carrefully, it'about cephfs not rbd in that stacktrace... Am I the only one ? Is there a work around ? I really need the dashboard to be usable, because I want to delegate a maximum of operations to people that don't need to have the rights to connect to machines to use CLI. And also don't have the skills to do so. Have a good day, -- Gilles