Linux Posix File Systems On Evms-Managed Devices - Novell OPEN ENTERPRISE SERVER 2 SP2 Installation Manual

For the best performance, if you plan to use a non-system device for both NSS and Linux POSIX
file systems, create the NSS file systems on the device first. NSS partitions the device in a manner
that ensures the best performance for the NSS file systems, and does not adversely affect
performance for Linux POSIX file systems.
For instructions for creating pools and volumes, see the
NSS Volumes" in the
A.3.2 Linux POSIX File Systems on EVMS-Managed Devices
Use the Linux EVMSGUI tool (evmsgui) to create Linux POSIX file systems on the EVMS-
managed device. For EVMS-managed devices, Linux POSIX file systems require that the Linux
partitions be managed by the DOS Segment Manager (DOSSegMgr). This is laid down
automatically if you first create an NSS file system on the device.
WARNING: EVMS administration utilities (evms, evmsgui, and evmsn) should not be running
when they are not being used. EVMS utilities lock the EVMS engine, which prevents other EVMS-
related actions from being performed. This affects both NSS and Linux POSIX volume actions.
NSS and Linux POSIX volume cluster resources should not be migrated while any of the EVMS
administration utilities are running.
Consider the following guidelines when working with evmsgui to create a Linux POSIX partition:
Scenario
Free space is controlled by the
DOS Segment Manager.
Disk is not initialized.
Free space is controlled by the
NetWare Segment Manager.
218 OES 2 SP2: Installation Guide
OES 2 SP2: NSS File System Administration
To create the Linux partition in evmsgui:
Create the Linux partition as usual.
1. Select No at the prompt to initialize.
On a pure SLES system (no NSS), ignore this step.
2. Delete the disk object from the Volumes tab.
3. Add the DOS Segment Manager to the device.
4. Create the Linux partition as usual.
Do one of the following:
If no partitions are on the device, remove the NetWare Segment
Manager from the device, add the DOS Segment Manager, then
create the partition as usual.
WARNING: Changing the segment manager initializes the disk
again (destroys existing data), so you should do this only with a
disk that has no partitions on it, or if you do not want any of the
partitions that are currently on the disk.
If partitions exist, reboot the server to automatically give control
of the device back to the DOS Segment Manager, then create
the partition as usual.
"Managing NSS Pools" and
Guide.
"Managing