Managing HP Serviceguard A.11.20.20 for Linux, May 2013

Table 7 Changing Linux Partition Types
Action PerformedResponsePrompt
Create new partitionnCommand (m for help):1.
Partition affected1Partition number (1-4):2.
Set partition to type to Linux, default83Hex code (L to list codes):3.
Define first partition1Command (m for help):
Set size to 1 cylinder
1
Command (m for help):
Display partition datapCommand (m for help):
Write data to the partition tablewCommand (m for help):
The following example of the fdisk dialog shows that the disk on the device file /dev/sdc is
set to Smart Array type partition, and appears as follows:
fdisk /dev/sdc
Command (m for help): n
Partition number (1-4): 1
HEX code (type L to list codes): 83
Command (m for help): 1
Command (m for help): 1
Command (m for help): p
Disk /dev/sdc: 64 heads, 32 sectors, 4067 cylinders
Units = cylinders of 2048 * 512 bytes
Device Boot Start End Blocks Id System
/dev/sdc 1 1 1008 83 Linux
Command (m for help): w
The partition table has been altered!
NOTE: Follow these rules:
• Do not try to use LVM to configure the lock LUN.
• The partition type must be 83.
• Do not create any filesystem on the partition used for the lock LUN.
• Do not use md to configure multiple paths to the lock LUN.
• HP recommends that you can configure the same multipath device name for all the LUNs on
various nodes of a cluster, so that the administration of the cluster can be made easier.
To transfer the disk partition format to other nodes in the cluster use the command:
sfdisk -R <device>
where <device> corresponds to the same physical device as on the first node. For example, if
/dev/sdc is the device name on the other nodes use the command:
sfdisk -R /dev/sdc
You can check the partition table by using the command:
fdisk -l /dev/sdc
NOTE: fdisk may not be available for SUSE on all platforms. In this case, using YAST2 to set
up the partitions is acceptable.
144 Building an HA Cluster Configuration