This section describes the changes in behavior in using the Solaris OS that occur once a configuration created by the Logical Domains Manager is instantiated; that is, domaining is enabled.
Any discussion about whether domaining is enabled pertains only to Sun UltraSPARC T1–based platforms. Otherwise, domaining is always enabled.
Domaining is enabled once a logical domains configuration created by the Logical Domains Manager is instantiated. If domaining is enabled, the OpenBoot firmware is not available after the Solaris OS has started, because it is removed from memory.
To reach the ok prompt from the Solaris OS, you must halt the domain. You can use the Solaris OS halt command to halt the domain.
Whenever performing any maintenance on a system running LDoms software that requires powercycling the server, you must save your current logical domain configurations to the SP first.
Do not attempt to change an active CPU's operational status in a power-managed domain by using the psradm(1M) command. This only applies if your platform supports power management.
If domaining is not enabled, the Solaris OS normally goes to the OpenBoot prompt after a break is issued. The behavior described in this section is seen in two situations:
You press the L1-A key sequence when the input device is set to keyboard.
You enter the send break command when the virtual console is at the telnet prompt.
If domaining is enabled, you receive the following prompt after these types of breaks.
c)ontinue, s)ync, r)eset, h)alt? |
Type the letter that represents what you want the system to do after these types of breaks.
The following table shows the expected behavior of halting or rebooting the control (primary) domain.
The question in Table 9–1 regarding whether domaining is enabled pertains only to the Sun UltraSPARC T1 processors. Otherwise, domaining is always enabled.
Command |
Domaining Enabled? |
Other Domain Configured? |
Behavior |
---|---|---|---|
halt |
Disabled |
N/A |
For Sun UltraSPARC T1 Processors: Drops to the ok prompt. |
|
Enabled |
Not Configured |
For Sun UltraSPARC T1 Processors: System either resets and goes to the OpenBoot ok prompt or goes to the following prompt: r)eset, o)k prompt, or h)alt? For Sun UltraSPARC T2 Processors: Host powered off and stays off until powered on at the SP. |
|
Enabled |
Configured |
Soft resets and boots up if the variable auto-boot?=true. Soft resets and halts at ok prompt if the variable auto-boot?=false. |
reboot |
Disabled |
N/A |
For Sun UltraSPARC T1 Processors: Powers off and powers on the host. |
|
Enabled |
Not Configured |
For Sun UltraSPARC T1 Processors: Powers off and powers on the host. For Sun UltraSPARC T2 Processors: Reboots the host, no power off. |
|
Enabled |
Configured |
For Sun UltraSPARC T1 Processors: Powers off and powers on the host. For Sun UltraSPARC T2 Processors: Reboots the host, no power off. |
shutdown -i 5 |
Disabled |
N/A |
For Sun UltraSPARC T1 Processors: Powers off the host. |
|
Enabled |
Not Configured |
Host powered off, stays off until powered on at the SP. |
|
Enabled |
Configured |
Soft resets and reboots. |