CFGADM_AC(1M) Maintenance Commands CFGADM_AC(1M)


cfgadm_ac - EXX00 memory system administration


/usr/sbin/cfgadm [-c configure] [-f]
[-o disable-at-boot | enable-at-boot ] ac#:bank# ...

/usr/sbin/cfgadm [-c unconfigure]
[-o disable-at-bootp | enable-at-boot ] ac#:bank# ...

/usr/sbin/cfgadm [-v]
[-o quick | normal | extended, [max_errors=#] ] -t ac#:bank#...

/usr/sbin/cfgadm -x relocate-test ac#:bank# ...

/usr/sbin/cfgadm [-l] -o disable-at-boot | enable-at-boot ac#:bank# ...


The ac hardware specific library
/usr/platform/sun4u/lib/cfgadm/ provides the functionality
for configuring and unconfiguring memory banks on E6X00, E5X00, E4X00 and
E3X00 systems as part of the Dynamic Reconfiguration of CPU/Memory boards
using cfgadm_sysctrl(1M).

Memory banks appear as attachment points in the device tree. For each
CPU/Memory board, two attachment points are published, one for each bank
on the board: bank0 and bank1. If the bank is unpopulated, the receptacle
state is empty. If the bank is populated, the receptacle state is
connected. The receptacle state of a memory bank can never be
disconnected. The occupant state of a connected memory bank can be
configured or unconfigured. If the occupant state is configured, the
memory is in use by Solaris, if unconfigured it is not.


Refer to cfgadm(1M) for complete descriptions of the command options.

The following options are supported:

-c configure | unconfigure

Change the occupant state. The configure argument ensures that the
memory is initialized and adds the memory to the Solaris memory pool.
The unconfigure argument removes the memory from use by Solaris. When
a CPU/Memory board is to be removed from a system, both banks of
memory must be unconfigured.

cfgadm refuses the configure operation if the memory on the board is
marked disabled-at-boot (see info field), unless either the -f
(force) option or the enable at boot flag, (-o enable-at-boot), is
given. The configure operation takes a short time proportional to the
size of memory that must be initialized.

cfgadm refuses the unconfigure operation if there is not enough
uncommitted memory in the system (VM viability error) or if the bank
to be unconfigured has memory that can't be removed (non-relocatable
pages error). The presence of non-relocatable pages is indicated by
the word permanent in the info listing field. Removing memory from
use by Solaris may take a significant time due to factors such as
system load and how much paging to secondary storage is required. The
unconfigure operation can be cancelled at any time and the memory
returned to the fully configured state by interrupting the command
invocation with a signal. The unconfigure operation self-cancels if
no memory can be removed within a timeout period. The default timeout
period of 60 seconds can be changed using the -o timeout=# option,
with a value of 0 disabling the timeout.


Force option. Use this option to override the block on configuring a
memory bank marked as disabled at boot in the non-volatile disabled-
memory-list variable. See Platform Notes:Sun Enterprise
6x00/5x00/4x00/3x00 Systems


List option. This option is supported as described in cfgadm(1M).

The type field is always memory.

The info field has the following information for empty banks:

slot# empty

The slot# indicates the system slot into which the CPU/Memory board
is inserted. For example, if this were slot11 the attachment point
for use with cfgadm to manipulate the associated board would be
sysctrl0:slot11. The info field has the following information for
connected banks:

slot# sizeMb|sizeGb [(sizeMb|sizeGb used)] base 0x###
[interleaved #-way] [disabled at boot] [permanent]

The size of the bank is given in Mb or Gb as appropriate. If the
memory is less than completely used, the used size is reported. The
physical base address is given in hexadecimal. If the memory bank is
interleaved with some other bank, the interleave factor is reported.
If the memory on the board is disabled at boot using the non-volatile
disabled-memory-list variable, this is reported. If the bank has
memory that cannot be removed this is reported as permanent.

-o disable-at-boot | enable-at-boot

These options allow the state of the non-volatile disabled-memory-
list variable to be modified. These options can be used in
conjunction with the issuing of a -c option or with the explicit or
implied listing command, -l, if no command is required. Use of -o
enable-at-boot with the configure command to override the block on
configuring memory on a board in the disabled memory list.

-o extended | normal | quick

Use with the -t option to specify test level.

The normal test level ensures that each memory cell stores both a 0
and a 1, and checks that all cells are separately addressable. The
quick test level only does the 0s and 1s test, and typically misses
address line problems. The extended test uses patterns to test for
adjacent cell interference problems. The default test level is
normal. See -t option.

-o max_errors=#

Use with the -t option to specify the maximum number of allowed
errors. If not specified, a default of 32 is assumed.

-o timeout=#

Use with the unconfigure command to set the self-cancelling timeout.
The default value is 60 and the unit is seconds. A value of 0 means
no timeout.


Test an unconfigured bank of memory. Specify the test level using the
-o quick | normal | extended option.

cfgadm exits with a 0 (success) if the test was able to run on the
memory bank. The result of the test is available in the condition for
the attachment point.


Verbose option. Use this option in combination with the -t
option to display detailed progress and results of tests.

-x relocate-test

For all pages of memory in use on the specified memory bank, a
relocation operation as used in the unconfigure command is attempted.
The success of this operation does not guarantee that the bank can be
unconfigured. Failure indicates that it probably cannot be
unconfigured. This option is for test purposes only.


The following operand is supported:

The attachment points for memory banks are published by
instances of the address controller (ac) driver (ac#). One
instance of the ac driver is created for each system board,
but only those instances associated with CPU/Memory boards
publish the two bank attachment points, bank0 and bank1.

This form conforms to the logical ap_id specification given
in cfgadm(1M). The corresponding physical ap_ids are listed
in the FILES section.

The ac driver instance numbering has no relation to the slot
number for the corresponding board. The full physical
attachment point identifier has the slot number incorporated
into it as twice the slot number in hexadecimal directly
following the fhc@ part.



attachment points


hardware specific library file


cfgadm(1M), cfgadm_sysctrl(1M), config_admin(3CFGADM), attributes(5)

Sun Enterprise 6x00, 5x00, 4x00 and 3x00 Systems Dynamic Reconfiguration
User's Guide

Platform Notes:Sun Enterprise 6x00/5x00/4x00/3x00 Systems


Refer to the Sun Enterprise 6x00, 5x00, 4x00 and 3x00 Systems Dynamic
Reconfiguration User's Guide for additional details regarding dynamic
reconfiguration of EXX00 system CPU/Memory boards.

September 29, 1999 CFGADM_AC(1M)