用ASR命令启用/停止V480/V880上的CPU

予默

This document describes how to use the commands 'asr-enable'
and 'asr-disable' to manually disable CPUs on a Sun Fire V480/V880 and
provides examples of the steps necessary to implement these ASR commands for
single and multiple CPUs.
Using the ASR commands to manually enable or disable CPUs on
V480/V880.
=======================================================================
The
user level commands 'asr-enable' and 'asr-disable' can be used to manually
enable or disable system devices. To view the full list of devices that can
be enabled (or disabled) type 'asr-enable' at the ok prompt (the example
output is for V480):
{2} ok asr-enable
Usage: asr-enable
Where  is an absolute device path, a device
alias, or a device label.
Valid device labels include:
    cpu3-bank3      cpu3-bank2      cpu3-bank1      cpu3-bank0
    cpu2-bank3      cpu2-bank2      cpu2-bank1      cpu2-bank0
    cpu1-bank3      cpu1-bank2      cpu1-bank1      cpu1-bank0
    cpu0-bank3      cpu0-bank2      cpu0-bank1      cpu0-bank0
    pci-slot5      
pci-slot4      
pci-slot3       pci-slot2
    pci-slot1      
pci-slot0      
gptwo-slotc     gptwo-slotb
    gptwo-slota    
ob-ide          ob-net0        
ob-net1
    ob-fcal        
io-bridge9      io-bridge8      io-bridge5
    cpu3            cpu2            cpu1            cpu0
    *              
cpu3-bank*      cpu2-bank*      cpu1-bank*
    cpu0-bank*      pci*            pci-slot*      
gptwo-slot*
    io-bridge*      cpu*
The .asr is another user-level command,
that will display the current status (enabled or disabled) of devices that
are supported by ASR (the example output is for V480):
{0} ok
.asr
ASR Disablement Status
Component:    
Status
CPU/Memory:    Enabled
IO-Bridge5:    Enabled
IO-Bridge8:    Enabled
IO-Bridge9:    Enabled
GPTwo
Slots:   Enabled
Onboard FCAL:  Enabled
Onboard Net1:  Enabled
Onboard
Net0:  Enabled
Onboard IDE:   Enabled
PCI Slots:    
Enabled
The normal ASR function is that disabling a CPU with
'asr-disable' will effectively disable the entire CPU module, so disabling
CPU1 will also take CPU3 out of the system. To bring a CPU back alive after
it has been disabled you must 'asr-enable' the CPU and then power-cycle the
system.
Similarly, if you have CPU1 & CPU3 disabled, then enabling
(asr-enable) only CPU1 will still leave CPU3 disabled, so CPU1 will still
be [effectively] disabled as well, so you must enable both CPUs
(and power-cycle) before either CPU is available. Simply asr-enable'ing a
cpu
and reseting the system isn't good enough , you must
power-cycle.
You need to use the .asr command at the ok prompt to check
the status of each CPU. The OBP command 'reset-all' should be used
immediately after 'asr-enable' or 'asr-disable', so that these commands can
take effect.
Here are some examples (based on 4-way V480 server) of the
steps you need to follow in order get a CPU(s) back alive after it has been
disabled:
1. Example procedure to asr-disable and asr-enable single CPU
(4-way system) :
   The steps to "asr-enable" a previously "asr-disable'd"
CPU (this is not needed if the CPU was failed by POST, this is only
needed when the CPU has been manually "asr-disable"d):
a) ok
asr-disable cpu1
b) ok reset-all    --> CPU1 and CPU3 (the other cpu on
the same module) now disabled
                            
and unavailable and the system will respond with:
    Resetting
...
    WARNING: Offlining/Disabling CPU1...and CPU3...Done.
c) At
this point if 'reset-all' is performed (or 'reset-all' followed by power
cycle) CPU1 will still be unavailable. This can be verified via .env
command
(at the ok prompt),  which will show the status only for CPU0&2, or at
the OS level by using the commands 'psrinfo -v' and 'prtdiag -v'.
d) To
enable CPU1:
     ok asr-enable cpu1
     ok .asr (to check
status)
     ok reset-all   --> cpu1 is still unavailable (can be verified
by using  .env, which will only
                            
show the status for CPU0 & CPU2
     Power-cycle (power-off/power-on) --> cpu1
& cpu3 are now available.
     This can be verified via the .env command
(OBP level), which will now show  the status for all 4 CPUs, or at
the OS level by using the commands 'psrinfo -v' and 'prtdiag
-v'.
2. Example procedure to asr-disable and asr-enable CPU1 &
CPU3 (4-way system):
{3} ok asr-disable cpu1
{3} ok asr-disable
cpu3
{3} ok .asr (to check ASR Disablement Status)
Component:    
Status
CPU0/Memory:   Enabled
CPU1:          Disabled
Memory
Bank0:  Enabled
Memory Bank1:  Enabled
Memory Bank2:  Enabled
Memory
Bank3:  Enabled
CPU2/Memory:   Enabled
CPU3:          Disabled
Memory
Bank0:  Enabled
Memory Bank1:  Enabled
Memory Bank2:  Enabled
Memory
Bank3:  Enabled
IO-Bridge5:    Enabled
IO-Bridge8:    Enabled
IO-Bridge9:    Enabled
GPTwo
Slots:   Enabled
Onboard FCAL:  Enabled
Onboard Net1:  Enabled
Onboard
Net0:  Enabled
Onboard IDE:   Enabled
PCI Slots:     Enabled
{3} ok
reset-all
Resetting ... WARNING: Offlining/Disabling CPU1...and
CPU3...Done.
To bring back CPU1 and CPU3 both CPU's need to be
asr-enabled (if only CPU1 is enabled, after 'reset-all' the system will again
offline (effectively disable) both CPU1 and CPU3):
ok asr-enable
cpu1
ok asr-enable cpu3
ok reset-all
ok .asr (to check ASR Disablement
Status)
Component:    
Status
CPU/Memory:    Enabled
IO-Bridge5:    Enabled
IO-Bridge8:    Enabled
IO-Bridge9:    Enabled
GPTwo
Slots:   Enabled
Onboard FCAL:  Enabled
Onboard Net1:  Enabled
Onboard
Net0:  Enabled
Onboard IDE:   Enabled
PCI Slots:     Enabled
ok
.env (will still not display the status for CPU1 & CPU3)
After
power-cycle both CPU's will be back on-line.
3. To disable and then
enable the entire CPU module in Slot B (both CPU1 & CPU3) the following
commands can be used as well:
{3} ok asr-disable gptwo-slotb
{3} ok
.asr
ASR Disablement Status
Component:    
Status
CPU/Memory:    Enabled
IO-Bridge5:    Enabled
IO-Bridge8:    Enabled
IO-Bridge9:    Enabled
GPTwo
Slot A:  Enabled
GPTwo Slot B:  Disabled
GPTwo Slot C:  Enabled
Onboard
FCAL:  Enabled
Onboard Net1:  Enabled
Onboard Net0:  Enabled
Onboard
IDE:   Enabled
PCI Slots:     Enabled
{3} ok reset-all
Resetting
...
WARNING: Offlining/Disabling CPU1...and CPU3...Done.
To
bring back the cpu's in slot B use the command:
{0} ok asr-enable
gptwo-slotb
{0} ok .asr
ASR Disablement Status
Component:    
Status
CPU/Memory:    Enabled
IO-Bridge5:    Enabled
IO-Bridge8:    Enabled
IO-Bridge9:    Enabled
GPTwo
Slots:   Enabled
Onboard FCAL:  Enabled
Onboard Net1:  Enabled
Onboard
Net0:  Enabled
Onboard IDE:   Enabled
PCI Slots:     Enabled
After
a 'reset-all' and power-cycle of the system the cpu's in slot B (cpu1 and
cpu3) will be back online.

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