Installation guide

9.6.4 Accessing Raw Devices from the Server

After you create partitions and bind the devices for raw disk I/O, Adaptive Server can use them.

Prerequisites

Confirm that you have root privileges to execute the raw -qa command on your system to avoid seeing a message

similar to:

Cannot open master raw device '/dev/rawctl' (Permission denied)

Context

If the SAP ASE server is running as user "sybase," then apply read, write, and owner permissions to

the /dev/raw/raw# device entries and the raw bound control device /dev/rawctl. See the chown(1),

chgrp(1), and chmod(1) commands to apply correct permissions.

Procedure

1. Verify your settings by querying the device binding with the raw command:

# raw -qa

You should see:

/dev/raw/raw1: bound to major 3, minor 5

/dev/raw/raw2: bound to major 3, minor 6

/dev/raw/raw3: bound to major 3, minor 7

/dev/raw/raw4: bound to major 3, minor 8

2. Using the raw devices, SAP ASE and the installation and configuration utility, srvbuild, detect and present

size automatically. Enter the absolute path to the raw device when creating devices such as master,

sybsystemprocs, sybtempdb.

Installation Guide for Linux

Postinstallation Tasks