Sun Microsystems 10000 manual To Enable the Kernel Cage

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For example, if you enabled the kernel cage, the following message is generated:

NOTICE: DR Kernel Cage is Enabled

To Enable the Kernel Cage

A caged kernel confines the nonpageable memory to a minimal (most often one) number of systems boards. By default the kernel cage is disabled, preventing DR detach operations. If you plan to perform DR detach operations, you must enable the kernel cage by using the system(4) variable kernel_cage_enable, as explained in the following procedure.

Be aware that DR attach or addboard operations are enabled by default, regardless of the setting of the kernel_cage_enable variable.

Note – Before the release of version 7 of the Solaris software, the dr-max-memvariable was used to enable DR. The dr-max-memvariable is not used to enable DR in version 7 and subsequent versions of the Solaris software.

1.Using a text editor, edit the /etc/system file for the domain so that kernel_cage_enable equals 1.

set kernel_cage_enable=1

2.After all DR configuration tasks are complete, be sure to reboot the domain so that this configuration can take effect.

3.Verify this configuration change in the /var/adm/messages file.

The following example is a section from a messages file, which indicates that the kernel cage was enabled:

NOTICE: DR Kernel Cage is Enabled

To Set Permanent Driver Parameters for Network Drivers

If you use the ndd(1M) command to set the driver configuration parameters for network devices, those parameters may not persist after a DR operation.

Chapter 1 Configuring DR 7

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Contents Sun Enterprise DR Configuration Guide Please Recycle Page Contents Sun Enterprise 10000 DR Configuration Guide May Before You Read This Book How This Book Is OrganizedTypographic Conventions Using Unix CommandsShell Prompts Accessing Sun Documentation Online Related DocumentationSun Welcomes Your Comments Configuring DR DR Models Where to Execute DR Commands Getting StartedEnhancements in DR Model Requirements for Multipathing in DRDevice Prerequisites Suspend-safe or closedAllocating Sufficient Domain Swap Space Qualifying Third-Party Device DriversOverview of DR Configuration Tasks To Enable the Kernel Cage To Set Permanent Driver Parameters for Network DriversTo Enable Device Suspension for the soc and pln Drivers To Specify an Unsafe Driver ListPreparing for DR Detach Operations To Make an Unsupported Tape Device Detach- SafeConfiguration Changes During DR Operations To Manually Suspend a Suspend-Unsafe Device Target Memory Constraints Disconnect the cables to the deviceProcessors Network DevicesRemote DR Communication Check the domainIndex Sun Enterprise 10000 DR Configuration Guide May