Managing Serviceguard Extension for SAP on Linux (IA64 Integrity and x86_64), February 2008

Planning a File System Layout for SAP in a Serviceguard/LX Cluster Environment
SHARED NFS: the NFS automounter
Chapter 2 65
Lastly, create symbolic links that point from the original SAP and
original database directory names to NFS place holders in /import.
ln -sf /import/<SID> /sapmnt/<SID>
ln -sf /import/trans /usr/sap/trans
ln -sf /import/ini /var/spool/sql/ini
ln -sf /import/programs /sapdb/programs
ln -sf /import/data /sapdb/data
ln -sf /import/oracle/stage /oracle/stage
NOTE The 2.6 Linux kernel use lvm2 with the device-mapper and virtual
devices. In a failover situation it can happen that the device minor
number changes when a volume group fails over to another node
resulting in 'stale NFS handle' errors. One solution to avoid this issue is
to create logical volumes with persistent minor numbers. See the README
file in /opt/cmcluster/nfstoolkit for a detailed description.