Some host are having performance problems because of a disk pool issue.
A list of host and more details will follow shortly.
Recovery is done, and all hosts are up and running again.
The host are starting to come back up again.
We are still looking into chaldene.uberspace.de; should be back up soon.
All listed hosts are cleanly shut down. They will be brought back up as soon as the storage layer problem is resolved.
Here's a list of the VMs that are affected:
We need to power down the affected VMs to cleanly fix the issue in the storage layer.