3.2. Known Issues

These known issues exist in Red Hat OpenStack at this time:
BZ#1226859
Scaling up from 0 Ceph Storage nodes is not supported
BZ#1336237
When using Red Hat Ceph as a back end for ephemeral storage, the Compute service does not calculate the amount of available storage correctly. Specifically, Compute simply adds up the amount of available storage without factoring in replication. This results in grossly overstated available storage, which in turn could cause unexpected storage oversubscription.

To determine the correct ephemeral storage capacity, query the Ceph service directly instead.
BZ#1362528
At current, dhcpv6 on interfaces cannot be disabled by using nic templates, making it impossible to control IP assignment and IPv6 routes on interfaces connected to a network that runs a dhcpv6 server. As a workaround, add the following to /etc/sysconfig/network-scripts/ifcfg-eth4:

IPV6_AUTOCONF=no
BZ#1463060
When using Red Hat Ceph Storage as a back end for both Block Storage (cinder) volumes and backups, any attempt to perform an incremental backup will result in a full backup instead, without any warning.
BZ#1321179
OpenStack command-line clients that use `python-requests` can not currently validate certificates that have an IP address in the SAN field.