Sun Microsystems Netra T5220 - Managing Components with Automatic System Recovery Commands

Chapter 1 Server Diagnostics 1-43
3. If you want to view all logged messages, type the following command:
1.8 Managing Components With Automatic
System Recovery Commands
The Automatic System Recovery (ASR) feature enables the server to automatically
configure failed components out of operation until they can be replaced. In the
server, theASR feature manages the following components:
■ UltraSPARC T2 processor strands
■ Memory FB-DIMMs
■ I/O bus
The database that contains the list of disabled components is called the ASR blacklist
(asr-db).
In most cases, POST automatically disables a faulty component. After the cause of the
fault is repaired (FRU replacement, loose connector reseated, and so on), you must
remove the component from the ASR blacklist.
The ASR commands (
TABLE 1-10) enable you to view, and manually add or remove
components from the ASR blacklist. You run these commands from the ALOM CMT
CLI sc> prompt.
Note – The components (asrkeys) vary from system to system, depending on how
many cores and memory are present. Use the showcomponent command to see the
asrkeys on a given system.
# more /var/adm/messages*
TABLE 1-10 ASR Commands
Command Description
showcomponent Displays system components and their current state.
enablecomponent asrkey Removes a component from the asr-db blacklist,
where asrkey is the component to enable.
disablecomponent asrkey Adds a component to the asr-db blacklist, where
asrkey is the component to disable.
clearasrdb Removes all entries from the asr-db blacklist.