The Geek Diary

CONCEPTS | BASICS | HOWTO

Hardware

How to set boot-device with luxadm command in Solaris

By

This procedure demonstrates how to easily use the "luxadm" command to set the "boot-device" Open Boot Prom (OBP) parameter from a system booted from cdrom or in single user mode. The command will change the "boot-device" setting at the OS level and at the same time, change the "boot-device" setting at the OBP level. This procedure enables the "boot-device" to easily be changed for systems with storage devices whose device paths are not one of the built-in OBP boot aliases (disk, disk1, … [Read more...] about How to set boot-device with luxadm command in Solaris

How to create an OBP boot device alias in Solaris [SPARC]

By

These aliases are created to simplify access to hardware devices at the OBP level. They can be used in place of the full OBP hardware path at the "ok" prompt. When viewed via the "devalias" command at the prom level, they are listed in the form of the alias name followed by the full hardware path to the device. There are 3 methods discussed in this post to create a boot device alias. Method 1: Creating a custom boot device alias using show-disks and nvalias from the OpenBoot PROM (OBP) … [Read more...] about How to create an OBP boot device alias in Solaris [SPARC]

Solaris : How to unconfigure and configure a cpu/memory board using cfgadm

By

Question : How to unconfigure and configure a cpu/memory board using cfgadm on Sun Enterprise E6800/E6900 Answer : To un-configure a cpu/memory board from system 1. Unconfigure each bank separately # cfgadm -c unconfigure ac#:bank# To get ac#:bank#, run : # cfgadm -s cols=ap_id:info:type The above command will associate the address controller(ac) number with the slot number, because the device names for memory are assigned chronologically, not by board number. 2. Unconfigure the … [Read more...] about Solaris : How to unconfigure and configure a cpu/memory board using cfgadm

M-Series Servers : How to reset XSCF password

By

Follow the procedure below in case you have forgotten or want to reset the existing XSCF user password. (This procedure needs the user to be physically present at the server) 1. Connect directly to the serial port using the serial cable and a laptop. 2. Configure the settings on the terminal program you are using to have the following settings: Baud rate: 9600 bps Data length: 8 bit Parity: None Stop: 1 bit Flow control: None Delay: Except for 0 3. When the login prompt appears, enter … [Read more...] about M-Series Servers : How to reset XSCF password

How to force a crash dump on T1000/T2000 servers from ALOM

By

The post provides a description of forcing a crash dump on T1000/T2000 servers from ALOM. Typically, when a system hang occurs, it is required to collect a crash dump. In such case, the ALOM break command is the command to drop the system to OBP (ok prompt), which then allows user to run "ok> sync" to save crash dump. However, if "break" command can't drop the system to ok prompt, the '-D' option of the command may allow the user to get a coredump directly. This is new option is introduced with … [Read more...] about How to force a crash dump on T1000/T2000 servers from ALOM