SUSE_Linux_Enterprise_Server_15_x_for_SAP_Applications_Configuration_Guide_for_SAP_HANA_en

3.9 Create Mount Points
In order to use our logical volumes (independently if they were created based on internal disks or on multipath
devices), we must create mount points within the root file system.
Create the mount points:
# mkdir -p /hana/{shared,data,log}
# mkdir -p /usr/sap
The next step varies depending on your SAP HANA deployment. For a scale-up system, the file systems can be
mounted during the system boot. Edit /etc/fstab to add the mount commands or append it from the
command line to the file.
echo “/dev/system/lv_usr_sap /usr/sap xfs defaults 1 2” >> /etc/fstab
echo “/dev/system/lv_hana_shared /hana/shared xfs defaults 1 2”>> /etc/fstab
echo “/dev/vg00/lv_hana_data /hana/data xfs defaults 1 2” >> /etc/fstab
echo “/dev/vg01/lv_hana_log /hana/log xfs defaults 1 2” >> /etc/fstab
For the multipath example, adapt the names. It is mandatory to use unique and persistent identifier such as
aliases for UUIDs or the UUIDs themselves. The dm-x identifiers can change based on adding new disks,
changing paths etc.
Mount all file systems from /etc/fstab unless SAP HANA Auto Host Failover is implemented. For details see
SAP HANA Host Auto-Failover .
Mount all file systems from /etc/fstab :
# mount -av
3.10 Tweak the Default System Settings for SAP HANA
SAP HANA needs some special configuration settings in order to use all the performance the hardware offers.
The SUSE default configuration settings are not set for an SAP HANA workload, therefore you must adapt
some of the settings.
Starting with SLES4SAP12 SP2 we added the tool saptune. Check the referenced SAP Note for all last
updated settings. About the details how to use saptune check SAP Note 1275776 - Linux: Preparing SLES for
SAP environments .
To tune a system, first find a tuning profile using saptune as shown:
# saptune solution list
saptune knows the following profiles:
●
●
SAP BusinessObjects Profile for servers hosting an SAP SAP BusinessObjects application.
SAP HANA Profile for servers hosting an SAP HANA database.
SUSE Linux Enterprise Server 15.x for SAP Applications Configuration Guide for SAP HANA
Sample Installation of SLES 15 for SAP Applications P U B L I C 45