Owner's Manual

Deployment Guide 19
4 On each node , type:
more /proc/partitions
The node detects and displays the LUNs or logical disks, as well as the partitions created on those
external devices.
NOTE: The listed devices vary depending on how your storage system is configured.
A list of the LUNs or logical disks that are detected by the node is displayed, as well as the partitions
that are created on those external devices. PowerPath pseudo devices appear in the list, such as
/dev/emcpowera , /dev/emcpowerb , and /dev/emcpowerc .
5 In the /proc/partitions file, ensure that:
• All PowerPath pseudo devices appear in the file with similar device names across all nodes.
For example,
/dev/emcpowera , dev/emcpowerb , and /dev/emcpowerc .
• The Fibre Channel LUNs appear as SCSI devices, and each node is configured with the same
number of LUNs.
For example, if the node is configured with a SCSI drive or RAID container attached to a Fibre
Channel storage device with three logical disks,
sda identifies the node’s RAID container or
internal drive, and
emcpowera , emcpowerb , and emcpowerc identifies the LUNs (or PowerPath
pseudo devices).
If the external storage devices do not appear in the /proc/partitions file, reboot the node.
Configuring Shared Storage for Clusterware
This section provides instructions for configuring the shared storage for Oracle Clusterware.
Configuring Shared Storage Using the RAW Device Interface
1 On node1, create three partitions on an external storage device with the fdisk utility:
Ty p e
fdisk /dev/emcpowerx and create three partitions of 150 MB each for the Cluster Repository,
Voting disk, and the Oracle system parameter file.
2 Verify the new partitions by typing:
more /proc/partitions
On all the nodes, if the new partitions do not appear in the /proc/partitions file, type:
sfdisk -R /dev/<device name>