16
Chapter 7. Technology Previews
Technology Preview features are not supported or only supported limitedly. These features are mainly
included for customer convenience and may not be funtionally complete, instable or in other ways not
suitable for production use.
• Hot-Add of Memory
Hot-Add-memory is currently only supported on the following machines:
• IBM xSeries x260
• IBM xSeries single node x460
• IBM xSeries x3800
• IBM xSeries x3850
• IBM xSeries single node x3950
If your machine is not listed, please call support, whether the machine has been successfully tested. Else
a maintenance update will explicitly mention the general availability of this feature.
• Oracle Cluster File System on zSeries
Due to known issues, OCFS2 is not recommended for production use on zSeries (not supported). A
maintenance update will explicitly mention the availability of this function.
• Huge Page Memory support via HMC on POWER
Huge Page Memory support (16GB pages, enabled via HMC) is not yet supported under Linux.
Problems occur if huge pages are assigned to a partition in combination with eHEA / eHCA adapters.
eHEA: Network interfaces can't be setup if huge page memory is assigned to the same partition.
• libhugetlbfs
The libhugetlbfs project shipped with SUSE Linux Enterprise Server 10 is a preview of application
provision with transparent access to system huge pages. While the library provides an application with
easy access to huge pages when sufficient huge pages have been previously allocated on the system,
additional development and testing is required to provide a stable transition to normal pages in a
production environment.
• Read-Only Root Filesystem
It is possible to run SUSE Linux Enterprise Server 10 from Service Pack 2 on on a read-only root
filesystem. Due to the huge number of possible configurations, this is currently not a supported scenario.
The
/tmp
and
/var/tmp
directories needs to be on a separate partition and cannot be mounted read-
only.
After the installation has finished and all services are configured, login as root and do the following
modifications:
Modify
/etc/fstab
and add "ro" to the mount options of the root filesystem entry.
