D Administering Specific Hardware

D.1 Introduction

This appendix describes the procedures for adding and configuring certain hardware devices or options as follows:

PCMCIA cards - This section provides an overview of configuration.

CalComp graphics tablet - This section provides an overview of configuration.

Logical partitions on the AlphaServer GS140 - This section provides full configuration instructions.

D.2 PCMCIA Support

Certain processors are able to support PCMCIA (PC Cards) as stated in the owner's manual and the QuickSpec of a given release of the operating system. Only a small number of cards are qualified, but if the card adheres closely to standards it might work.

The steps involved in configuring a PCMCIA card are as follows:

Verify that your hardware and operating system support PCMCIA (PC Cards). Consult the information from the adapter vendor and card vendor for any additional configuration steps that are necessary and contact the vendor if you are uncertain.

Determine the bus type, which can be ISA or EISA. This step determines the method of console configuration you are using.

Install the adapter and configure it using the appropriate console commands.

Configure a custom kernel and create the device special files. This step might be unnecessary if an adapter is installed and a card is inserted during initial installation and configuration of the operating system. In this case, the operating system detects the card and creates the kernel configuration entries and device special files. See Chapter 4 for information on kernel configuration and Chapter 5 for information on device special files.

Update the /etc/remote file.

Insert and eject the card as required.

See pcmcia(7) for specific information on configuring cards and on any current restrictions in a given release. See modem(7) and the Network Administration: Connections guide for information on modem connections.

D.3 CalComp Graphics Tablet

Certain processors are able to support the CalComp DrawingBoard III Tablet as stated in the Owner's Manual and the Software Product Description of a given release of the UNIX operating system. Other input devices supported by the Xinput extension to the Xserver might work using a similar configuration. When the software for the tablet is installed on your system, you can configure it to emulate a system mouse.

The steps involved in configuring a tablet are as follows:

Ensure that the /usr/var/X11/Xserver.conf file contains a line similar to the following:
```
input <
<_dec_xi_db3  lib_dec_xi_db3.so  XiDb3Init /dev/tty00:1:12:12:16:\
1:8:1000:1:1 >
>
```
The tty that is specified is the serial port (COMM) where the tablet is connected to your system.

Specify settings for the tablet in the last line of this file by using the following syntax:
```
device:mode:tabletWidth:tabletHeight:numbtns:corePointer:mouseScale:\
resolution:Xincrement:Yincrement
```
(See calcomp(7) for an explanation of the data fields.)

Connect the tablet to your system and turn it on.

Enter the following command to restart the Xserver so that the Xinput extension can recognize the tablet:
```
# /usr/sbin/shutdown -r +5 \
"Turning on support for the Calcomp Drawingboard III tablet" 
```
When the restart completes, the tablet is configured into the Xserver and ready to use.

See calcomp(7) for more information and for restrictions on use.

D.4 AlphaServer GS140 Logical Partitions

A single AlphaServer GS140 system can be divided into a maximum of three logical partitions. Each partition is allocated its own dedicated set of hardware resources. A partition is viewed by the operating system and applications software as a single AlphaServer GS140 system.

Logical partitions employ a share nothing model. That is, all hardware resources (processors, memory, and I/O) allocated to a partition are isolated to that partition. Only the instance of an operating system that is running on a partition can access that partition's hardware resources.

You can use logical partitions to reduce floor space requirements, power consumption, or improve heat dissipation (by reducing computer room cooling requirements). For example, two departments in an enterprise with different computing requirements might run different applications and require different configuration and tuning of the operating system. Logical partitioning allows you to configure a single AlphaServer GS140 computer to meet the computing needs of both departments.

D.4.1 Hardware Requirements

The hardware requirements for a partition are:

An AlphaServer GS140 with a minimum of six center plane slots
Only the AlphaServer GS140 6-525 is supported. See the Systems and Options Catalog for information on newly-supported systems. The logical partitions feature is supported on the AlphaServer GS140 system. An AlphaServer 8400 (upgraded to a GS140 by replacing the processor modules) is also supported.

A console device
This console device can be a character cell video terminal or serial line connection to another system or terminal concentrator. Supported graphics devices can be used by the operating system's windowing software, but not as the console device.
The restriction of a graphics device to the windowing software (which cannot be the console device) applies only to secondary partitions. A supported graphics device can be the console for the primary partition (partition 0). To use a graphics console, set the value of the console environment variable to BOTH before initializing partitions. For example:
```
P00>>> set console BOTH
```
The AlphaServer GS140 includes one console serial port. This port becomes the console for the first partition (partition 0). Each additional partition requires the installation of a KFE72 option. This option includes two serial ports (port 0 is the console port). See the hardware documentation for the KFE72 option information and installation instructions.

One dual processor CPU module

One IO Port (IOP) module
The minimum requirement for a partition is one IOP module. A partition might include a second IOP module. The maximum number of IOP modules for the entire system (the sum of all partitions) is three.

XMI hardware might be used with logical partitions. However, XMI controllers and devices must be configured into partition zero (0). This is a console firmware restriction.

One memory module
The minimum memory size supported for a partition is 512 MB. However, applications running in a partition might require more than the 512 MB minimum memory.

A software load source device (CD-ROM drive or network adapter)

A minimum AlphaServer GS140 console firmware revision level of Version 5.4-19
When installing and configuring logical partitions on a system, see the Release Notes for the operating system release that you are installing, and update the firmware revision if required. See the Installation Guide for information on updating the firmware.

The remainder of this section describes the tasks you perform to configure partitions, and provides information about managing a partitioned AlphaServer GS140 system. The topics covered describe the following activities:

Preparing to install and operate a partitioned system

Verifying system hardware is properly configured for partitions

Verifying the revision level of your system's console firmware and upgrade the firmware if necessary

Configuring partitions for your system by creating the logical partitioning console firmware environment variables(EVs)

Initializing partitions and bootstrap secondary partitions to console mode (the P##>>> prompt)

Installing UNIX and applications software to each partition

Operating and managing a partitioned system

D.4.2 Preparing to Install and Operate Logical Partitions

You should become familiar with the operation of your system by reading the hardware documentation supplied with your system. Of particular interest for partitioning are the operation of the system's OFF/SECURE/ENABLE/RESET switch and several console commands (such as: boot, create, init, set, and show).

Before setting up your partitions, make sure the system hardware is fully installed and passes all self-test diagnostics.

Note

Before installing the operating system software to any partition, you should read all subsections of this document. There are certain aspects of managing a partitioned system you must be aware of prior to making the system operational. Precautions must be taken to prevent actions by the console on a partition from interfering with operation of another partition.

The next section describes logical partitioning terms used throughout the rest of this document. After reviewing these terms, proceed to Section D.4.3.

D.4.2.1 Definition of Commonly Used Terms

You should become familiar with the following terms before configuring your partitions.

logical partition

A logical grouping of hardware resources (CPU, IO, MEMORY, and console) within a single system for exclusive use by an instance of the operating system. A single physical system might have several logical partitions, each running a separate instance of the operating system.

primary partition: Partition number zero. The partition with the active console terminal if partitioning is disabled (that is, all hardware resources are in one partition).

secondary partition: Partition with a number other greater than zero. One of the partitions that display the console prompt after the lpinit command is executed on the primary partition's console.

primary console: The console terminal connected to the primary partition. The only active console terminal if partitions are disabled.

secondary console: The console terminal connected to a secondary partition. This is active only if partitions are enabled.

power OFF/ENABLE switch

The four position switch located on the AlphaServer GS140 control panel. The four positions perform the following functions:

OFF - System power (all partitions) is off.

SECURE - Power is applied to the system (all partitions). The primary console's ctrl/p halt function is disabled.

ENABLE - Power is applied to the system (all partitions). The primary console's ctrl/p halt function is enabled.

RESET - This is a momentary position. Moving the switch to RESET and then releasing it causes a complete initialization of the system. All secondary partitions are immediately terminated. The primary partition displays the normal power on self-test messages and enters console mode.

console prompt

The prompt displayed on the console terminal of a partition to indicate the console firmware is ready to accept commands, as follows:

P##>>>

Where ## is the processor number on which the console firmware is currently executing. This is normally the primary processor of the current partition as shown in the following examples:

For partition 0 with CPU 0:
```
P00>>>
```

For partition 1 with CPU 4:
```
P04>>>
```

ctrl/p halt: Holding down the control key and typing the letter p causes the primary processor for partition 0 to halt and enter console mode (P00>>> prompt). This is possible only on the primary console. The halt operation can be disabled by setting the power switch to the SECURE position. The halt operation is ignored on secondary partitions.

P##>>>stop N">

P##>>>stop N

Typing stop N at the console prompt (P##>>>) causes processor N to halt and enter console mode. Issuing this command on the primary console terminal can stop any processor in any partition. For example, if the primary processor for partition 1 is processor 4, the following command causes processor 4 to enter console mode:

P00>>>stop 4

P##>>>continue N

If processor N entered console mode as the result of a ctrl/p halt or stop N command, typing continue N at the P##>>> prompt causes the processor to resume program execution. For example:

P##>>>continue 4

If you halt a single processor you can omit the processor number (N).

P##>>>init

Typing init at the console (P##>>>) prompt of any partition causes a complete reinitialization of the entire system. All active partitions are immediately terminated and the system is reset (as if the power switch is momentarily moved to the RESET position). If partitions are enabled, the console requests verification of the init command by displaying the following prompt:

Do you really want to reset ALL partitions? (Y/<N>)

Type Y to complete the init command or N to cancel it.

D.4.3 Logical Partitions Configuration and Installation Tasks

Each of the following sections describes a task you perform to partition your AlphaServer GS140 system. Each task is performed in the order presented, although some tasks might be skipped in certain cases.

If you have read this section previously, and require only a summary of the normal sequence of startup commands, they are as follows:

P00>>> set lp_count  n
            (Set the count of n logical partitions) 
 
P00>>> init
            (Initialize the primary partition) 
 
P00>>> lpinit
            (Start the secondary partitions) 
 
P00>>> boot
            (Boot the primary partition)
 
P##>>> boot
            (boot the secondary partitions)

Improper operation results if the lpinit command is omitted. The console firmware prevents this by automatically executing the lpinit command if the lp_count is nonzero and a boot command is issued on the primary partition's console terminal.

On startup, each secondary partition displays configuration information. It is possible for this message to be proceeded by a series of Y characters as described in Section D.4.3.8. This is not an error and can be ignored.

D.4.3.1 Verifying Your System's Hardware Configuration

You need to verify that your hardware is properly configured for logical partitioning. You also need to record certain information about your hardware configuration for later use (when you configure partitions). Follow these steps to verify your hardware configuration:

Power on your system by setting the power OFF/ENABLE switch to the ENABLE position.

Note

A newly installed system (with factory installed software) or an existing system with the auto_action console EV set to BOOT or RESTART, automatically boots the operating system disk after the hardware's self-test is completed. In this case, you need to interrupt the automatic boot by typing ctrl/c at the console terminal. If you cannot interrupt the automatic boot, allow the operating system boot completely, then shut it down (do not type ctrl/p to halt the automatic boot). See the Installation Guide guide for information on factory installed software before you attempt to set up logical partitions.
The factory installed software disk might be used as the system disk for one of the partitions (see Section D.4.6 for information on installing the operating system).

After a short delay (about 15 seconds) configuration information similar to the following example is displayed on the primary console screen:

F   E   D   C   B   A   9   8   7   6   5   4   3   2   1   0   NODE #
                            A   A   M   .   M   P   P   P   P   TYP
                            o   o   +   .   +  ++  ++  ++  ++   ST1
                            .   .   .   .   .  EE  EE  EE  EB   BPD
                            o   o   +   .   +  ++  ++  ++  ++   ST2
                            .   .   .   .   .  EE  EE  EE  EB   BPD
                            +   +   +   .   +  ++  ++  ++  ++   ST3
                            .   .   .   .   .  EE  EE  EE  EB   BPD
 
                                .   +   +   +   .   +   +   +   C0 PCI +
    .   .   .   .   .   .   +   .   .   +   .   .   +   +       C1 XMI +
 
.   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   C4
                +   .   +   +   .   .   .   .   +   .   .   +   C5 PCI +
.   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   C6
                +   .   +   +   .   +   +   +   .   .   .   +   C7 PCI +
                            .   .   .   +   .   .   .   .          EISA +
 
                            .   .  A1   .  A0   .   .   .   .   ILV
                            .   . 1GB   . 1GB   .   .   .   .   2GB
Compaq AlphaServer GS140 8-6/525, Console V5.4 15-MAR-99 10:07:33
SROM V1.1, OpenVMS PALcode V1.48-3, Tru64 UNIX PALcode V1.45-3
System Serial =  , OS = UNIX, 12:58:49  March 15, 1999
Configuring I/O adapters...
isp0, slot 0, bus 0, hose0
isp1, slot 1, bus 0, hose0
tulip0, slot 2, bus 0, hose0
isp2, slot 4, bus 0, hose0
isp3, slot 5, bus 0, hose0
tulip1, slot 6, bus 0, hose0
demna0, slot 1, bus 0, xmi0
kzmsa0, slot 2, bus 0, xmi0
kzmsa2, slot 5, bus 0, xmi0
kzpsa0, slot 3, bus 0, hose5
tulip2, slot 8, bus 0, hose5
tulip3, slot 9, bus 0, hose5
pfi0, slot 11, bus 0, hose5
tulip4, slot 12, bus 0, hose7
floppy0, slot 0, bus 1, hose7
kzpsa1, slot 4, bus 0, hose7
tulip5, slot 4, bus 2, hose7
tulip6, slot 5, bus 2, hose7
tulip7, slot 6, bus 2, hose7
tulip8, slot 7, bus 2, hose7
pfi1, slot 6, bus 0, hose7
pfi2, slot 8, bus 0, hose7
kzpsa2, slot 9, bus 0, hose7
P00>>>

The line ending with NODE # indicates the slot number (referred to later in the configuration process). Your system provides up to nine slots, each of which is labeled with its slot number. The next line (ending with TYP) indicates the type of module in each slot. Record the type of module in each slot:
```
	P = CPU (dual processor CPU module)
	M = MEM (memory module)
	A = IOP (IO port module)
 
	  8   7   6   5   4   3   2   1   0
	+---+---+---+---+---+---+---+---+---+
	|   |   |   |   |   |   |   |   |   |
	|   |   |   |   |   |   |   |   |   |
	+---+---+---+---+---+---+---+---+---+
 
 
```

Divide your system into logical partitions by assigning slots (and therefore modules) to each partition. Each partition must be assigned at least one dual CPU module, one MEM module, and one IOP module. With a total of nine slots, the AlphaServer GS140 can be configured for a maximum of three partitions.

Note

Each CPU module includes two processors, both of which must be assigned to the same partition.

If your system meets the minimum requirements, proceed to the next section. Otherwise, you need to take corrective action (such as installing additional hardware), then proceed to the next section.

D.4.3.2 Verifying the Firmware Revision Level

Logical partitions require console firmware support. See the Release Notes for changes to the minimum revision. To verify that your system's firmware includes support for logical partitions, use the following command at the primary console to display the firmware revision level:

P00>>>show version

The console displays a message similar to the following:

version  V5.4,  15-MAR-1999 10:07:33

Verify the revision of your firmware is Version 5.4 or later. If you need to upgrade your system's firmware, see the firmware upgrade instructions in the hardware documentation. The firmware CD-ROM is shipped with the software kit, or you can download the firmware from the World Wide Web or using ftp. The information on finding and updating the firmware is in the Installation Guide.

D.4.3.3 Configuring Logical Partitions

You configure and enabled (or disabled) logical partitions using a set of console environment variables (EVs). Two console EVs take the form of hexadecimal numbers, which are bit masks in which a bit position in the mask corresponds to a module or processor number. Hardware configuration rules require modules to be installed in specific slot numbers, based on the module type, as follows:

IO port (IOP) modules are installed in slots 8, 7, and 6 in descending order with a maximum of three IOP modules allowed.

CPU (dual processor) modules are installed in slots 0 through N in ascending order (N depends on the number of CPU modules installed). The value of N is limited by the number of IOP and MEM modules.

MEM (memory) modules are installed in any available slot between the highest numbered CPU module and the lowest numbered IOP module.

Set the processor mask variable (lp_cpu_mask) is set shifting the number 3 by two times the slot number of the CPU module. Possible CPU masks for each slot are as follows:

    Processors 00 and 01  (slot 0): 3 << (2 * 0) = 003
    Processors 02 and 03  (slot 1): 3 << (2 * 1) = 00c
    Processors 04 and 05  (slot 2): 3 << (2 * 2) = 030
    Processors 06 and 07  (slot 4): 3 << (2 * 4) = 0c0
    Processors 08 and 09  (slot 5): 3 << (2 * 5) = 300
    Processors 10 and 11  (slot 6): 3 << (2 * 6) = c00

Calculate the value of the lp_cpu_mask variable by combining (logical or) the masks for individual CPU module slots. For example, to assign the four processors on the CPU modules in slot 0 and 1 to partition 0, you assign the lp_cpu_mask0 variable a value of 00f.

Set the IO port mask variable (lp_io_mask) by left shifting the number 1 by the slot number of the IOP module. Potential IOP masks for each slot are as follows:

IO Port module in slot 8: 1 << 8 = 100
IO Port module in slot 7: 1 << 7 = 080
IO Port module in slot 6: 1 << 6 = 040

If a partition consists of two IOP modules, create the value of the lp_io_mask variable by combining (using logical or) the masks for individual IOP module slots. For example, if you assign IOP modules in slots 7 and 8 to partition 1, the value of the lp_io_mask1 variable is 180.

When assigning IOP modules to secondary partitions, it is important to remember that one of the IOPs assigned to the partition must be connected to a DWLPB option with a KFE72 option installed. The KFE72 option provides the console serial port for secondary partitions.

D.4.3.4 Determining and Setting Environment Variables

To create the console environment variables for your logical partitions, first determine the number of partitions and which slots (that is, CPU, MEM, and IOP modules) are assigned to each partition (using the module types and slot numbers you recorded previously). Then, you can create the console EVs.

A summary of console EVs and values follows:

Console EV	Value
`lp_count`	Number of partitions
`lp_cpu_mask`N	`CPU` assignment mask for partition N
`lp_io_mask`N	`IOP` module assignment mask for partition N
`lp_mem_mode`	Memory isolation mode

The following table shows a sample configuration of two partitions based on the configuration information in Section D.4.3.3, with the following modules:

4 CPU modules (in slots 0 through 3)

2 MEM modules (in slots 4 and 6)

2 IOP modules (in slots 7 and 8)

Partition	Module(s)
Partition 0	`CPU` modules in slots 0 and 1 (CPU 0-3, mask = 00F)
	`IOP` module in slot 8 (IO Port, mask = 100)
	`MEM` module in slot 6 (2GB memory)
Partition 1	`CPU` modules in slots 2 and 3 (CPU 4-7, mask = 0F0)
	`IOP` module in slot 7 (IO Port, mask = 080)
	`MEM` module in slot 4 (1GB memory)

There is no console EV mask for memory. The console firmware assigns memory modules to partitions. The firmware attempts to balance the amount of memory assigned to each partition.

To create or change the EVs, execute the following commands at the console prompt. The values used are for the two partition example described at the start of this section. The actual values you enter depend on your hardware configuration and your partition layout.

The value of the lp_count EV is zero (it changes later).

The following command displays the console EVs if you have created them. No output appears if the console EVs do not exist.

P00>>>show lp*

If the console EVs do not exist (were not previously created) use the following commands to create the EVs.

There is a 10 second delay after you issue each command and that the console echoes the value of each EV after you create it.

P00>>>create -nv lp_count 0
P00>>>create -nv lp_cpu_mask0 f
P00>>>create -nv lp_cpu_mask1 f0
P00>>>create -nv lp_io_mask0 100
P00>>>create -nv lp_io_mask1 80
P00>>>create -nv lp_mem_mode isolate

If the console EVs already exist (previously created), use these commands to set their values:

P00>>>set lp_count 0
P00>>>set lp_cpu_mask0 f
P00>>>set lp_cpu_mask1 f0
P00>>>set lp_io_mask0 100
P00>>>set lp_io_mask1 80
P00>>>set lp_mem_mode isolate

Use the information in the following two sections to display (and if necessary correct) the console EV settings.

D.4.3.5 Displaying Console Environment Variables

The value of a console EV might be displayed on the console of any partition using the show command. For example, to display the value of lp_count enter the following:

P00>>>show lp_count

To display all the partitioning EVs, enter the following:

P00>>>show lp*

If the console EVs are correct, ignore the next section and proceed to Section D.4.3.7 . Otherwise, continue with the next step and make any necessary corrections.

D.4.3.6 Correcting Console Environment Variables

Note

You must set console EVs with lp_ prepended to the EV name by using only the console of the primary partition (partition 0). You must no change the value of these variables on any secondary partition.

Use the set command to change the value of any or all the console EVs. For example, to change all the EVs, enter the following:

P00>>>set lp_count 0
P00>>>set lp_cpu_mask0 f
P00>>>set lp_cpu_mask1 f0
P00>>>set lp_io_mask0 100
P00>>>set lp_io_mask1 80
P00>>>set lp_mem_mode isolate

D.4.3.7 Disabling Automatic Boot Reset

The Installation Guide recommends setting the boot_reset console environment variable to ON. This setting is not compatible with logical partitions for which the boot_reset console EV must be set to OFF. This is required so booting a partition does not interfere with the operation of other (previously booted) partitions. If the boot_reset console EV is set ON, then a system-wide reset happens after you execute the boot command (P00>>>boot). This reset immediately terminates the operation of all partitions.

Execute the following command to disable the boot_reset console EV:

P00>>>set boot_reset off

D.4.3.8 Setting Memory Interleave Mode

Set the value of the interleave console EV to none. When setting the interleave mode to none, the console might echo a series of Y characters to the console display screen (there might be several lines of Y characters). This is not a problem and you can ignore it.

Use the following commands to set the memory interleave mode and proceed to the next section:

P00>>>set interleave none
P00>>>init

D.4.3.9 Setting the Operating System Type to UNIX

Set the value of the os_type console EV to UNIX as follows:

P00>>>set os_type UNIX

D.4.3.10 Setting the auto_action Console Environment Variable

To halt the processor after a POWER-ON or RESET (using the reset switch), use the following command:

P00>>>set auto_action halt

To automatically boot the operating system after a POWER-ON or RESET, use the following command:

P00>>>set auto_action boot

D.4.4 Initializing Partitions

Before installing Tru64 UNIX to partitions you need to initialize the partitions. This operation assigns hardware resources (CPU, IOP, and MEM modules) to each partition and spawns a console for each secondary partition as follows:

Set the value of the lp_count EV to the number of partitions. For example, to enable two partitions:
```
P00>>>set lp_count 2
```

Initialize partition 0:
```
P00>>>init
```
Configuration information (as previously described) is displayed on the primary console screen, followed by the console prompt; P00>>>.

Initialize all secondary partitions.
```
P00>>>lpinit
```

On the primary console a series of partition configuration messages are displayed, including the starting address of physical memory for each partition. Record these addresses so you can determine if a kernel rebuild is needed in the event of a memory configuration change.

The following is a sample partition configuration display:

Partition 0: Primary CPU = 0
Partition 1: Primary CPU = 4
Partition 0: Memory Base = 000000000   Size = 080000000
Partition 1: Memory Base = 080000000   Size = 040000000
No Shared Memory
LP Configuration Tree = 128000
starting cpu 4 in partition 1 at address 040010001
starting cpu 5 in partition 1 at address 040010001
starting cpu 6 in partition 1 at address 040010001
starting cpu 7 in partition 1 at address 040010001

For each secondary partition configured, information is displayed on the secondary console screens, followed by a console prompt such as P04>>>. There is a 20-second delay after the lpinit command before the secondary consoles display their configuration information.

D.4.5 Correcting Interleave Mode Errors

If the interleave EV is incorrectly set, the console displays the following error message:

Insufficient memory interleave sets to partition system.
Issue command "set interleave none" then reset system.

To recover from this error, enter the following commands:

P00>>>set interleave none

P00>>>set lp_count 0

P00>>>init

Then, repeat the steps in this section.

D.4.6 Installing the Operating System

After the partitions are configured and initialized, you can install the operating system to each partition. Install the operating system by following the instructions in the Installation Guide.

AlphaServer GS140 systems ship with Tru64 UNIX preinstalled on one of the disks. You can use this disk as the root disk for one of the partitions (usually partition 0). To use the preinstalled disk, boot it and follow the instructions for completing the installation. By default, the bootdef_dev console EV should be set to automatically boot the preinstalled disk. If it is not, use the bootdef_dev value you recorded in Section D.4.3.1.

Note

Depending on how you assigned IOP modules, the name of the factory installed software (FIS) disk might change and might not be assigned to partition 0. You can use the following command in each partition to locate the disk:
P##>>> show device

The operating system can also be installed from a CD-ROM or over the network from a Remote Installation Server (RIS). It might not always be practical to configure a CD-ROM drive on all partitions and a RIS server might not be available. One alternative (assuming a local network is available) is to install the operating system to one partition from a CD-ROM, then configure that partition as a RIS server for the other partitions. Refer to Sharing Software on a Local Area Network for instructions on setting up a Remote Installation Server.

D.4.7 Managing a Partitioned System

The operating system running in each partition can be managed as if it were running on a system that is not partitioned. However, there are some AlphaServer GS140-specific operational characteristics that you must be aware of and take into account when managing a partitioned system. These topics are documented in the following sections.

D.4.7.1 Operational Characteristics

During the course of normal partitioned system operations you might need to repeat some of the configuration and initialization tasks. Some of these tasks require special precautions to prevent interference between partitions. The following sections describe these tasks.

D.4.7.1.1 Console init command (P##>>>init)

Typing the init command at the console prompt in any partition reinitializes the entire system. This immediately terminates the operating system on all partitions. Therefore, you should not execute the init command unless you need to reinitialize the entire system.

If you execute the init command, the console prompts you to confirm that you actually want to reset all partitions. Answer no to abort the init command or yes to continue with the init command.

D.4.7.1.2 Shutting Down or Rebooting the Operating System

To shut down the operating system running in a partition and return to console mode (P##>>> prompt), use the shutdown command. For example:

# /usr/sbin/shutdown -h +5 "Shutting down the OS"

The shutdown command can also shut down and reboot the operating system. For example:

# /usr/sbin/shutdown -r +5 "Rebooting the OS"

D.4.7.2 Recovering an Interrupted Operating System Boot

An incomplete or interrupted operating system boot might leave the console boot drivers in an inconsistent state. In this case, the console displays the following message:

Inconsistent boot driver state.
System is configured with multiple partitions.
A complete INIT must be performed before rebooting.

Use the following procedure to recover from this condition:

Shut down the operating system in all running partitions.

Execute the following commands on the primary console:
```
P00>>>set lp_count 0
P00>>>init
P00>>>set lp_count N
```
(where N is the number of partitions)
```
P00>>>init
P00>>>lpinit
```

Boot the operating system in each partition. For example:
```
P00>>>boot
P04>>>boot
```

D.4.7.3 Halting Processors

Under normal operating conditions, it is not necessary to manually halt processors. The processor halts and enters console mode after you shut down the operating system. You must manually halt the processor if the operating system hangs for some reason (for example, while debugging a loadable device driver).

Note

In the unlikely event that the processor cannot be halted the system must be reset by momentarily setting the four way OFF/ENABLE switch to the RESET position, then releasing it.

The following procedures work only if the Power OFF/ENABLE switch is in the ENABLE position.

Primary Partition

Pressing [Ctrl/p] on the primary console terminal forces the primary processor to enter console mode and display the P##>>> prompt. You can use the stop N command (where N is a processor number) to stop secondary processors (though this is not normally necessary). See Section D.4.2.1 for definitions of the console prompt and the stop command.

Secondary Partitions

Secondary partitions do not halt in response to a [Ctrl/p] command on the secondary console terminal. To force a secondary partition to enter console mode as follows:

Shut down the operating system on the primary partition as follows:
```
# /usr/sbin/shutdown -h +5 "Shutting down the OS"
```

Stop the primary processor of the secondary partition.
```
P00>>>stop N
```
Where N is the CPU number of the primary processor of the secondary partitions (normally the lowest numbered CPU assigned to the secondary partition). For example:
```
P00>>>stop 4
```

D.4.7.4 Power OFF/ENABLE Switch Position

During normal system operation, the Power OFF/ENABLE switch should be set to the SECURE position. This prevents you from accidentally halting the processor with ctrl/p.

D.4.7.5 Reconfiguring Partitions by Changing Console EVs

The console EVs that control logical partitions (names begin with lp_) must not be changed on any secondary partition. You can change these console EVs only by shutting down all partitions and setting new values on the primary partition's console terminal.

Once you have determined the layout of the new partition, follow these steps to reconfigure your partitions:

Shut down the operating system in each partition:

# /usr/sbin/shutdown -h +5 "Shutting down to reconfigure partitions"

Disable partitions and reset the system as follows:
```
P00>>>set lp_count 0
P00>>>init
```

Use the console set command to change the value of any or all of the console EVs. For the two partition example discussed in Section D.4.3.4, use the following commands:
```
P00>>>set lp_count 2
P00>>>set lp_cpu_mask0 f
P00>>>set lp_cpu_mask1 f0
P00>>>set lp_io_mask0 100
P00>>>set lp_io_mask1 80
P00>>>set lp_mem_mode isolate
```

Initialize the primary partition as follows:
```
P00>>>init
```

Initialize all secondary partitions as follows:
```
P00>>>lpinit
```

Boot the operating system in each partition using commands similar to the following:
```
P00>>>boot
P04>>>boot
```

D.4.7.6 Checking Other Console EVs Before Booting

Before booting the operating system in each partition, you should use the console show command to verify the correct state of the console EVs as follows:

P0##>>>show boot_reset

The boot_reset EV must be off.

P0##>>>show interleave

The interleave EV must be none.

P0##>>>show auto_action

The auto_action EV can be set to HALT or BOOT.

P0##>>>show os_type

The os_type EV should be set to UNIX.

D.4.7.7 Logical Partitioning Informational Messages at Boot Time

If you configure and enable logical partitions, the operating system displays informational messages for each partition. These messages appear on the console terminal during the early stages of the bootstrap process. The following example shows typical messages for a two partition system:

Partition 0
-----------
LP_INFO: 2 partition(s) established via lp_count
LP_INFO: primary processor for partition 0 is CPU 0
LP_INFO: partition 0 CPU allocation mask = 0xf
LP_INFO: partition 0 IOP allocation mask = 0x100
LP_INFO: Memory partitioning mode set to isolate
LP_INFO: partition 0 memory starting address = 0x0
 
Partition 1
-----------
LP_INFO: 2 partition(s) established via lp_count
LP_INFO: primary processor for partition 1 is CPU 4
LP_INFO: partition 1 CPU allocation mask = 0xf0
LP_INFO: partition 1 IOP allocation mask = 0x80
LP_INFO: Memory partitioning mode set to isolate
LP_INFO: partition 1 memory starting address = 0x80000000

These messages provide the following information:

The number of active partitions

The number of the primary processor for the current partition

Which processors are allocated to the current partition

Which IO port modules are allocated to the current partition

The memory partitioning mode (should always be set to isolate)

The starting address of memory for the current partition

D.4.8 Hardware Management and Maintenance

For the AlphaServer GS140, partitions share a common physical enclosure and hardware (such as power supplies, system bus, and control panel power switch). You cannot perform the following hardware management and maintenance tasks on individual partitions. You must disable partitions and reset the system to a unpartitioned state.

Tasks that require a complete system reinitialization are:

Performing corrective or preventive maintenance on system hardware.

Installing AlphaServer GS140 firmware upgrades, including IO controller firmware upgrades.

Adding or removing system hardware components (CPUs, memory, IOPs, PCI busses, IO controllers, and IO devices [except for hot swappable disks]).

Changing any partition's hardware resource assignments by modifying any console EV with lp_ prepended to its name.

Running the ECU Eisa Configuration Utility (ECU)or the Raid Configuration Utility (RCU) from the floppy disk drive.

D.4.8.1 Obtaining Technical Support

If you need to escalate a problem to your technical support organization, it is important that you tell the Customer Services representative that the system is partitioned (particularly if the service operation uses remote diagnosis). When you place the service call, state that your system is using logical partitions.

The logical partitioning software provides two methods for the customer services representative to determine whether or not a system is partitioned. The LP_INFO messages printed during operating system startup are also entered into the binary error log as part of the Startup ASCII Message. You can run the sizer -P command on any instance of the operating system to display the partitioning status of the system as follows:

# sizer -P
   Host hostname is instance 1 of 2 partitions.
   Physical memory starts at address 0x80000000.
   Memory mode is isolate.
   Processors assigned to instance 1: 4  5  6  7
   IO Port (s) assigned to instance 1: slot 7

If the system is not partitioned, the following message is displayed, where hostname is the name of the system:

Host hostname is not partitioned.

D.4.8.2 Performing Hardware Management and Maintenance Tasks

Before performing any management or maintenance tasks, you must terminate operation of all partitions and return the system to an unpartitioned state. Use the following steps to shut down partitions:

Shut down the operating system in each partition.

# /usr/sbin/shutdown -h +5 "Shutting down for maintenance"

Disable partitions by executing the following command at the primary console terminal:
```
	P00>>>set lp_count 0
```

Set the auto_action console EV for the primary partition to HALT as follows:
```
	
P00>>>set auto_action halt
```
You might need to reset the auto_action EV in step 1 of the next procedure, initializing and rebooting the partitions.

Reinitialize the system by typing this command on the primary console terminal.
```
P00>>>init
```

When the system returns to the P00>>> prompt you can perform system management and maintenance tasks. After completing system management and maintenance tasks, use the following procedure to reinitialize and reboot your partitions:

Verify the console EVs are set to the correct values as follows:
```
P00>>>show lp*
P00>>>show boot_reset
P00>>>show interleave
P00>>>show auto_action
```
The boot_reset EV should be set to off, the interleave EV should be set to none, and the auto_action EV should be set to either HALT or BOOT.

Set the lp_count EV to the correct number of partitions. For example:
```
P00>>>set lp_count 2
```

Initialize the primary partition as follows:
```
P00>>>>init
```

Initialize all secondary partitions.
```
P00>>>lpinit
```

Boot the operating system on each partition. If you changed the system's hardware configuration or reassigned any hardware resources to a different partition, a kernel rebuild might be required. Use the procedure in Section D.4.9 to determine if you need to rebuild the kernel for any partition.
If you do not require a kernel rebuild, boot the operating system as follows:
```
P##>>>boot
```
Where ## is the CPU number of the partition's primary processor.

D.4.9 Hardware Changes Requiring a UNIX Kernel Rebuild

If you change your system's hardware configuration you might need to rebuild the kernel. The following table defines the hardware configuration changes that require a rebuilt kernel:

Change	Requirements
Processors -- adding, removing, or reassigning CPU modules.	Changing the `lp_cpu_mask#` EV for any partition does not require a kernel rebuild. You must assign to the same partition both processors on a dual CPU module.
IO Processors -- adding, removing, or reassigning IOP modules.	Rebuild the kernel if you added or removed an IOP module. You need only rebuild the kernel for the changed partition). Moving a IOP module across partitions requires a kernel rebuild on both partitions. The `lp_io_mask#` EV assigns IOP modules.
	Adding or removing IO busses and IO controllers requires a kernel rebuild for the affected partition.
Memory Modules -- changing the memory module configuration.	For the primary partition (partition 0), changes to the memory module configuration do not require a kernel rebuild.
	The kernel for any secondary partition must be built to run at a specific memory address (that is, the physical memory starting address for the partition). Certain types of memory reconfiguration change this address and require a kernel rebuild. A partition's memory starting address changes if the memory size for any lower numbered partition increases or decreases.
	For example, if you replaced a 2GB memory module in partition zero with a 4GB module, the memory starting address of partition one increases by 2GB. In this example you must rebuild the kernel.
	If a secondary partition's kernel fails to boot after a memory module configuration change, you should rebuild the kernel.
	The memory starting address for each partition is displayed at the primary console after each iteration of the `P00>>>lpinit` command.

D.4.9.1 How to Rebuild the UNIX Kernel for a Partition

The following steps describe how you rebuild the kernel, which is a special case of the typical kernel build instructions documented in Chapter 4. This procedure assumes that you initialized partitions as described in Section D.4.4 and the partition requiring a kernel rebuild is halted at the P##>>> console prompt. Refer to Chapter 4 for information on:

Kernel booting and the single-user mode prompt.

Saving and copying kernels.

Boot the generic kernel to single-user mode:
```
P##>>>boot -fl s -fi genvmunix
```

Check and mount file systems:
```
# bcheckrc
```
Refer to Chapter 6 for more information on mounting file systems.

Set the host name (system name) for this partition:
```
# hostname NAME
```

Rebuild the kernel using the doconfig command:
```
# doconfig
```
Note

You must not use doconfig with the -c option to rebuild the kernel.

Save the current kernel as follows:
```
# cp /vmunix /vmunix.save
```

Install the new kernel as follows, where SYSNAME is the local host name:
```
# cp /sys/SYSNAME/vmunix /vmunix
```

Unmount the file systems as follows:
```
# umount -a
```

Halt the operating system as follows:
```
# sync
# sync
# halt
```

Boot the new kernel as follows:
```
P##>>>boot
```

D.4.10 Handling Nonrecoverable Hardware Error Machine Checks

There are two main classes of hardware errors: recoverable and nonrecoverable. Recoverable errors are corrected by the hardware and reported to the operating system. The operating system logs recoverable errors in the binary error log and continues normal system operation. Non-recoverable hardware errors require immediate termination of normal system operation and some form of corrective action (such as a system reset).

Nonrecoverable hardware errors are reported to the operating system as a machine check. The operating system crashes with a panic message, such as the following:

panic (cpu 0): tlaser: \
MACHINE CHECK Non-recoverable hardware error

The system then writes out a crash dump, and reboots or halts (depending on the setting of the auto_action console EV, which can be BOOT or HALT). Some hardware errors require a complete system reset before the operating system can be rebooted.

For system-wide hardware faults, the operating system forces a system reset after writing the crash dump. After the reset is completed, if auto_action is set to BOOT, the console firmware automatically reinitializes all partitions. Boot the operating system in each partition, using the following commands:

P00>>>boot
P##>>>boot

Otherwise, the system halts and enters console mode (P00>>> prompt). If this occurs, enter the following commands to restart partitions and reboot the operating system (where N is the number of partitions):

P00>>>set lp_count N
P00>>>init
P00>>>lpinit
P00>>>boot

For each secondary partition, enter the boot command as follows:

P##>>>boot

For local hardware faults (contained within a partition), the operating system running in the affected partition unconditionally halts after writing the crash dump. This allows other partitions to continue operating until a shut down can be scheduled. Restarting the affected partition requires a complete system reset, using the following procedure:

Shut down the operating system in each running partition as follows:

# /usr/sbin/shutdown -h +5 "Shutting down for error recovery"

At the primary console terminal, enter the following commands:
```
P00>>>set lp_count 0
P00>>>init
```

The console displays the following prompt:
```
Do you really want to reset ALL partitions? (Y/<N>)
```
Type Y to perform the reset.

After the reset is complete, and if auto_action is set to BOOT, the console firmware automatically reinitializes all partitions. Boot the operating system in each partition, using the following commands:
```
P00>>>boot
P##>>>boot
```
Otherwise, enter the following commands (where N is the number of partitions):
```
P00>>>set lp_count N
P00>>>init
P00>>>lpinit
P00>>>boot
 
 
```
For each secondary partition enter the following:
```
P##>>>boot
 
 
```

If these recovery procedures fail to restore full system operation for all partitions, reset the system manually by momentarily moving the OFF/ENABLE switch to the RESET position, then releasing it. Repeat the recovery procedure after the reset completes. If the failure persists, contact your technical support organization.

D.4.11 Logical Partitioning Error Messages

If an error condition occurs (such as an invalid partition configuration) the partition's console terminal displays an error message . After displaying the error message, the primary processor for the current partition halts and returns to the console prompt. To recover from any of these errors, correct the logical partitioning console EVs and reboot the partition.

The following error messages might be displayed:

LP_ERROR: invalid partition count (lp_count = #, max nodes = #): The lp_count console EV is set incorrectly. The value is less than zero or exceeds the maximum number of partitions supported for the AlphaServer GS140.
LP_ERROR: no CPUs for partition (check lp_cpu_mask): The value of lp_cpu_mask# (# represents the current partition number) is set incorrectly. This partition has no allocated processors.
LP_ERROR: no IOP for partition (check lp_io_mask): The value of lp_io_mask# (# represents the current partition number) is set incorrectly. This partition has no allocated IO Port modules.
LP_ERROR: lp_count > 1, but partitions not initialized Please execute 'lpinit' command at >>> prompt: The message indicates that partitions were configured, but not initialized.
LP_ERROR: must set lp_mem_mode [share or isolate]: The lp_mem_mode console EV is not set or set incorrectly. For logical partitions, lp_mem_mode must be set to isolate.
Bootstrap address collision, image loading aborted: The kernel's link address does not match the memory starting address of the partition. Refer to Section D.4.9 for instructions on how to recover from this error.

D.4.12 Understanding Console Firmware Error or Informational Messages

The console firmware implements several safety checks during certain events (such as system reset and partition startup). These checks help prevent cross-partition interference. The partition's console displays one of the following messages if an anomaly is detected:

Do you really want to reset ALL partitions? (Y/<N>)

This message displays after a system reset is requested, either by the operation issuing the init command or as a result of booting with the boot_reset console EV set to ON. This message is a warning that if you continue with the reset it terminates all partitions and the system is reset. If a reset is necessary, shut down the operating system in all operational partitions before proceeding with the reset.

Auto-Starting secondary partitions...

This message indicates the console firmware is initializing logical partitions (by running the lpinit command automatically). An auto-starting event occurs after a system reset (or power on). The console firmware boots the operating system in all partitions if the auto_action console EV is set to BOOT and you perform, the reset by using the RESET switch on power-on (not through the init command).

Insufficient memory interleave sets to partition system.Issue command "set interleave none" then reset system.

This message indicates that the interleave console EV is incorrectly set. Change the setting to none.

Insufficient memory modules to partition system.

Each partition requires a dedicated memory module. Reduce the number of partitions or install a memory module for each partition.

This message indicates that the lp_count console EV might not be set correctly. For example, you have two partitions, but lp_count is set to four. In this case, set lp_count to match the actual number of partitions.

Inconsistent boot driver state.System is configured with multiple partitions.A complete INIT must be performed before rebooting.

An incomplete or interrupted operating system boot caused the console boot drivers to enter an inconsistent state. Refer to Section D.4.7.2 for instructions on recovering from this state.

Do you want to attempt to boot secondary partitions anyway? (Y/<N>).

This message indicates that the console detected an inconsistency in your partitions set up (probably due to incorrect setting of lp_ console EVs). Unless you are certain it is safe to proceed, you should answer no (N) to this question and correct the inconsistency.

TIOP # not configured in any partition.Non-existent TIOP # configured in a partition.

These messages (together or separately) indicate incorrect setting of the lp_io_mask# console EV. The mask might be set to zero or to the wrong IOP module slot number. You should correct the setting and retry the lpinit command.

Secondary partitions have already been started.

This message most likely indicates you issued a second lpinit command after starting partitions. Before booting the operating system, you should check the values of the lp_ console EVs.

CPU # not configured in any partition.No valid primary processor specified for partition #.

In this message, the CPU number (#) might be a single CPU or a list of CPUs.

These messages (together or separately) indicate incorrect setting of the lp_cpu_mask# console EV. The mask might be set to zero or to incorrect CPU numbers. You should correct the setting and retry the lpinit command.