A Installing With Evms As The Volume Manager Of The System Device; Using Evms To Manage The System Device - Novell OPEN ENTERPRISE SERVER 2 SP2 Installation Manual

Installing with EVMS as the
A
Volume Manager of the System
Device
This section describes how to modify the default partitioning scheme for the system device during
®
installation of Novell Open Enterprise Server 2 (OES) and Novell Storage Services
the system device is managed by the Enterprise Volume Management System (EVMS) instead of
the Linux Volume Manager 2 (LVM2).
IMPORTANT: For the purpose of this documentation, a system device is any device that contains
the Linux , , or root (
/boot swap
Section A.1, "Using EVMS to Manage the System Device," on page 211
Section A.2, "Configuring the System Device to Use EVMS," on page 212
Section A.3, "Using EVMS to Manage Devices," on page 217
A.1 Using EVMS to Manage the System Device
The Novell Storage Services file system requires that the Enterprise Volume Management System
(EVMS) be used as the volume manager of devices that contain (or will contain) NSS pools and
volumes. NSS management tools cannot see devices managed by non-EVMS volume managers, so
those devices and the space on them are unavailable for creating NSS pools and volumes. EVMS
also makes it possible to use the full range of services that NSS offers. NSS is not supported or
tested for non-EVMS volume managers.
IMPORTANT: NSS management tools require that the devices you use for NSS pools and volumes
be managed by EVMS.
For a list of the NSS capabilities that are not available when using a non-EVMS volume manager,
see "NSS Limitations for Non-EVMS Volume
Administration Guide.
®
SUSE Linux Enterprise Server 10 supports LVM2 and EVMS as volume managers; however, a
given device can be managed by only one volume manager at a time. LVM2 is the default volume
manager for SUSE Linux. During the install, the YaST Installation Settings page automatically
recommends a partitioning scheme that uses LVM2 as the volume manager of the primary device
and that allocates the entire disk for the Linux system partitions and POSIX file systems.
This default partitioning scheme creates two problems for administrators who want to use NSS
pools and volumes on the same device as the system partitions:
NSS management tools cannot see devices that are managed by LVM2. Therefore, any
unpartitioned free space on the system device is not available to be used for NSS pools and
volumes.
The default LVM partitioning scheme allocates the entire device for Linux POSIX file systems,
so there is no free space available to be used later.
) partitions for your OES 2 server.
/
Managers" in the
Installing with EVMS as the Volume Manager of the System Device
(NSS) so that
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OES 2 SP2: NSS File System
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211