You must configure all disk devices used by the Cluster Edition so that they are accessible from all the nodes in the cluster.
The account used to start the cluster requires permission to read and write to all of the disk devices.
The cluster should have write permission on some of the “/dev/sg*” files that correspond to configured database devices, as the driver expects write permission for SCSI-3 PGR commands used in I/O fencing, and SCSI generic drivers require write permission.
Making disk devices accessible
Use the UNIX ls -l list command to verify paths and file permissions. You can use the UNIX dd utility to verify that the devices can be read and written to by the Sybase account.
Use the chmod change mode or chown change owner commands to correct the write access to “/dev/sg*” files.
The write access permissions of these files may change to root only after restarting the machine.
