Restarting servers After we rebooted the cluster-12 node many virtual machines were stuck in the freezed state.
Resize placement groups (64 -> 128) The automatic algorithm now calculated an optimum of 128 placement groups, so we resize again.
Reduce placement groups After removing all movies we need to reduce the number of placement groups to 64.
Recreate smb storage (only backup) As we screw up our file storage by overloading it we need to remove all files and disks and recreate it from scratch.
Remove VMs including disks to fix storage shortage After copying to many media files onto our NAS server, so we need to free some space.
Problems with additional disks of node cluster-12 One day after adding the new disks to node cluster 12 they were no longer available as OSDs.