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Solaris 7 11/99 Release Notes Supplement for Sun Hardware

General Issues

This section contains general issues that involve DR on the Sun Enterprise 10000 server. You should read this section before you attempt to install or configure DR.

dr-max-mem Utility

The way dr-max-mem is used has changed since the Solaris 2.5.1 release. Please see the appropriate section of the Solaris 7 11/99 version of the Sun Enterprise 10000 Dynamic Reconfiguration User's Guide for a detailed description of this important OBP variable.

DR and Bound User Processes

For Solaris 7 11/99, DR no longer automatically unbinds user processes from CPUs that are being detached. Users are now required to perform this operation themselves before initiating a DR Detach sequence. The DR Drain operation will fail if CPUs are found with bound processes.

Nonpageable Memory Location

For Solaris 7 11/99, the location of nonpageable memory (that is, OBP and kernel memory), the kernel cage, resides in the highest physical address space, which generally is on the highest-numbered system board in the domain. The direction of growth of this area is from highest to lowest physical addresses. Exceptions to this rule do exist. Always use drshow(1M) to verify a board's memory state.

Kernel Cage Location

For Solaris 7 11/99, the location of the kernel cage changed from the lowest numbered system board(s) to the highest numbered board(s). However, some customers require the kernel cage to be located on the lowest numbered system board. If you have this requirement, you can apply Patch 105873-08, as a minimum level, on the SSP to change the location of the cage. Refer to the Patch README file for instructions on how to install the patch. You can obtain the patch from http://sunsolve.corp.sun.com or from your local service provider.

DR and Tape Drives

For Solaris 7 11/99, the st driver, which has been considered DR unsafe in the past, is now DR safe. The driver now waits for existing I/O requests to complete before the drive is suspended.

DR and SunFDDI

If your Sun Enterprise 10000 server contains any SunFDDI(TM) SBus Adapter 5.0 interfaces and you plan to use DR, you must install Sun Patch 104572-05, or the highest revision level available. You can obtain this patch at the following Web site:

DR and the Sun StorEdge A3000

Dynamic Reconfiguration of Sun(TM) StorEdge(TM) A3000 arrays on the Sun Enterprise 10000 running Solaris 2.6 requires RAID Manager 6.01.00, or later, for correct operation.

DR and the Sun StorEdge A5000

DR will be supported on systems configured with Sun StorEdge A5000 devices and the latest StorEdge A5000 patch. Contact your service provider for more information on how to obtain the patch.

For I/O boards connected to the A5000, you must ensure that the FC-AL disk firmware version is ST19171FC 0413 or newer version. For more information, refer to the following Web site:

DR and pln and soc Drivers

If you are using pln and/or soc drivers on your server, you must ensure that the parameters are properly set in the /etc/system file. The file should include the following two entries, exactly as the appear in the example.

set pln:pln_enable_detach_suspend=1

set soc:soc_enable_detach_suspend=1