Hi Thanks, I guess this might have something to do with it: " Jun 15 09:44:22 dcn-ceph-01 bash[3278]: debug 2021-06-15T09:44:22.507+0000 7f704e4b3700 -1 mgr notify devicehealth.notify: Jun 15 09:44:22 dcn-ceph-01 bash[3278]: debug 2021-06-15T09:44:22.507+0000 7f704e4b3700 -1 mgr notify Traceback (most recent call last): Jun 15 09:44:22 dcn-ceph-01 bash[3278]: File "/usr/share/ceph/mgr/devicehealth/module.py", line 229, in notify Jun 15 09:44:22 dcn-ceph-01 bash[3278]: self.create_device_pool() Jun 15 09:44:22 dcn-ceph-01 bash[3278]: File "/usr/share/ceph/mgr/devicehealth/module.py", line 254, in create_device_pool Jun 15 09:44:22 dcn-ceph-01 bash[3278]: assert r == 0 Jun 15 09:44:22 dcn-ceph-01 bash[3278]: AssertionError " Not sure why it would be creating a pool? I believe it used to work, and I have this pool: " # ceph osd dump | grep pool pool 9 'device_health_metrics' replicated size 2 min_size 1 crush_rule 1 object_hash rjenkins pg_num 32 pgp_num 32 autoscale_mode on last_change 2630 flags hashpspool stripe_width 0 compression_algorithm snappy compression_mode aggressive application health_metrics " Mvh. Torkil On 15/06/2021 11.38, Sebastian Wagner wrote: > Hi Torkil, > > you should see more information in the MGR log file. > > Might be an idea to restart the MGR to get some recent logs. > > Am 15.06.21 um 09:41 schrieb Torkil Svensgaard: >> Hi >> >> Looking at this error in v15.2.13: >> >> " >> [ERR] MGR_MODULE_ERROR: Module 'devicehealth' has failed: >>     Module 'devicehealth' has failed: >> " >> >> It used to work. Since the module is always on I can't seem to restart >> it and I've found no clue as to why it failed. I've tried rebooting >> all hosts to no avail. >> >> Suggestions? >> >> Thanks, >> >> Torkil >> >> >> _______________________________________________ >> ceph-users mailing list -- ceph-users(a)ceph.io >> To unsubscribe send an email to ceph-users-leave(a)ceph.io >> >