Sun Cluster 2.2 7/00 Release Notes

Volume Managers

Sun Cluster 2.2 7/00 Release supports the following volume managers:

Volume Manager	Release	Solaris Version
Volume Manager	Release	2.6	7	8
Solstice DiskSuite	4.2	X	X
Solstice DiskSuite	4.2.1			X
VERITAS Volume Manager	3.0.4	X	X	X
VERITAS Volume Manager cluster feature	3.0.4	X		X

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VERITAS Volume Manager 3.0.4 includes the product formerly known as Cluster Volume Manager. This functionality is now called VERITAS Volume Manager cluster feature, cluster capability, or cluster functionality. This new terminology is used in both VERITAS and Sun Cluster documentation.

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You can use Solstice DiskSuite and VERITAS Volume Manager together only if you use Solstice DiskSuite to manage the local disks and VERITAS Volume Manager to control the multihost disks. In such a configuration, plan your physical disk needs accordingly. You might need additional disks for the VERITAS Volume Manager root disk group, for example. See your volume manager documentation for more information.

VERITAS Volume Manager Notes

Sun Cluster 2.2 7/00 Release supports VERITAS Volume Manager 3.0.4 on Solaris 2.6, 7, and 8.

Sun Cluster 2.2 7/00 Release supports the VERITAS Volume Manager 3.0.4 cluster feature (formerly called Cluster Volume Manager), only when used with Oracle Parallel Server. This combination is supported on Solaris 2.6 and Solaris 8.

Command Notes

The following (1M) commands and options are supported only with VxVM. See the associated man pages for more information.

confccdssa
scconf -q
scconf -F
scconf -S
scadmin reldisks
scadmin resdisks

Dynamic Multi-Pathing Feature

The VERITAS Volume Manager Dynamic Multipathing (DMP) feature is not supported with Sun Cluster 2.2 7/00 Release. You must explicitly disable DMP using the procedure documented in the "DMP Issues" section of the VERITAS Volume Manager 3.0.4 Release Notes.

Layered Volumes Feature

The VERITAS Volume Manager layered volumes feature is supported on Sun Cluster 2.2 7/00 Release, but a patch is required to alleviate a problem that impacts creation and switchover of logical hosts associated with disk groups that contain subvolumes. See "Patches" for patch details.

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The layered volumes feature is not supported on clusters using the VERITAS Volume Manager cluster feature (formerly called Cluster Volume Manager).

Solstice DiskSuite Notes

Sun Cluster 2.2 7/00 Release supports Solstice DiskSuite 4.2 on Solaris 2.6 and 7, and Solstice DiskSuite 4.2.1 on Solaris 8.

Command Notes

The following command changes apply to Solstice DiskSuite when used with Sun Cluster 2.2 7/00 Release. See the associated man pages for more information.

The reserve option to the scadmin(1M) command is used only with Solstice DiskSuite.
The +D option to scconf(1M) cannot be used with Solstice DiskSuite.
The scdidadm(1M) command is used in Solstice DiskSuite configurations to create mappings between disk ID instance numbers and remote paths to the disk, and to check disk ID major numbers.

Location of Solstice DiskSuite Packages

The Solstice DiskSuite 4.2 product CD is co-packaged with Sun Cluster 2.2 7/00 Release. Note that the Solstice DiskSuite 4.2 mediators package (SUNWmdm) is included on the Sun Cluster 2.2 product CD, in the directory /cdrom/multi_suncluster_sc_2_2/Sun_Cluster_2_2/Sol2_x/Product.

The Solstice DiskSuite 4.2.1 product is included on the Solaris 8 CD. Note that the Solstice DiskSuite 4.2.1 mediators package (SUNWmdm) is included on the Sun Cluster 2.2 product CD, in the directory /cdrom/multi_suncluster_sc_2_2/Sun_Cluster_2_2/Sol2_x/Packages.

Installing or Upgrading Solstice DiskSuite

To install or upgrade Solstice DiskSuite, use the detailed instructions included in your Solstice DiskSuite documentation. To access the Solstice DiskSuite documentation, perform these steps:

Open the README file contained on the Solstice DiskSuite CD (for Solstice DiskSuite 4.2) or Solaris 8 CD (for Solstice DiskSuite 4.2.1), using a browser to access the menu options that enable you to read an HTML file.

For example, in Netscape, do the following:
1. From the Netscape browser menu bar, choose File>Open Page>Choose File.
  
  This opens the File Browser dialog box.
2. Choose the file /cdrom/cdrom0/README.html.
  
  The browser brings up the README.html file.

Install the AnswerBook2 server and the Solstice DiskSuite AnswerBook using the README file instructions.

Access the Solstice DiskSuite AnswerBook and follow the online instructions found in the Solstice DiskSuite 4.x Installation and Product Notes to install Solstice DiskSuite.

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The latest version of Patch 106627 is required for Solstice DiskSuite 4.2 running on either Solaris 2.6 or Solaris 7. The patch is available from all Sun service providers and from the Sun patch web site, http://sunsolve.sun.com.

Configuring Mediators When Migrating From Solstice HA 1.3 to Sun Cluster 2.2 7/00 Release

This section is relevant only for clusters that were originally set up under Solstice HA 1.3 using Solstice DiskSuite mediators (two-string configurations). It describes changes that are automatically made to a mediator configuration when you upgrade from Solstice HA 1.3 to Sun Cluster 2.2. There is no direct user impact, but you should note the changes in any configuration information you keep on the cluster.

The documented Solstice HA 1.3-to-Sun Cluster 2.2 upgrade procedure changes the Solstice HA 1.3 mediator configuration. In Solstice HA 1.3, the hosts referred to the private links by physical names, whereas in Sun Cluster 2.2, the private link IP addresses are used. The original Solstice HA 1.3 mediator configuration resembles the following:

Mediator Host(s)	Aliases
`ha-red`	`ha-red-priv1`, `ha-red-priv2`
`ha-green`	`ha-green-priv1`, `ha-green-priv2`

After running the Sun Cluster 2.2 upgrade procedure, this configuration is converted to one that resembles the following:

Mediator Host(s)	Aliases
`ha-red`	`204.152.65.34`
`ha-green`	`204.152.65.33`

For more information about configuring mediators for Sun Cluster 2.2, see Chapter 9, "Using Dual-String Mediators," in the Sun Cluster 2.2 System Administration Guide.