LDOM在也是虚拟化的software 应用在大部分的SPARC T系列中，它的虚拟的范围更范，直接到硬件层；所以
你在ok中运行banner中也只是能看到虚拟出来的primary domain;
{0} ok banner
SPARC Enterprise T5120, No Keyboard
Copyright 2009 Sun Microsystems, Inc. All rights reserved.
OpenBoot 4.30.2.b, 1024 MB memory available, Serial #86277064.
Ethernet address 0:21:28:24:7b:c8, Host ID: 85247bc8.
实际的内存是8GB；4核
# prtdiag -v
System Configuration: Sun Microsystems sun4v SPARC Enterprise T5120
Memory size: 1024 Megabytes
================================ Virtual CPUs ================================
CPU ID Frequency Implementation Status
------ --------- ---------------------- -------
0 1165 MHz SUNW,UltraSPARC-T2 on-line
1 1165 MHz SUNW,UltraSPARC-T2 on-line
2 1165 MHz SUNW,UltraSPARC-T2 on-line
3 1165 MHz SUNW,UltraSPARC-T2 on-line
4 1165 MHz SUNW,UltraSPARC-T2 on-line
5 1165 MHz SUNW,UltraSPARC-T2 on-line
6 1165 MHz SUNW,UltraSPARC-T2 on-line
7 1165 MHz SUNW,UltraSPARC-T2 on-line
这里分了1核给primary
======================= Physical Memory Configuration ========================
Segment Table:
--------------------------------------------------------------
Base Segment Interleave Bank Contains
Address Size Factor Size Modules
--------------------------------------------------------------
0x0 8 GB 4 2 GB MB/CMP0/BR0/CH0/D0
MB/CMP0/BR0/CH1/D0
2 GB MB/CMP0/BR1/CH0/D0
MB/CMP0/BR1/CH1/D0
2 GB MB/CMP0/BR2/CH0/D0
MB/CMP0/BR2/CH1/D0
2 GB MB/CMP0/BR3/CH0/D0
MB/CMP0/BR3/CH1/D0
指激活了1G内存
以下是我删除LDOM的一些做法：
bash-3.00# ldm list
NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME
primary active -n-cv- SP 8 1G 0.1% 10m
ld1 inactive ------ 4 1G
ld2 inactive ------ 8 2G
删除非主的domain
bash-3.00# ldm remove-domain -a
bash-3.00#
bash-3.00# ldm list
NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME
primary active -n-cv- SP 8 1G 0.3% 13m
bash-3.00# ldm set-config factory-default
bash-3.00# shutdown -i1 -g0 -y
bash-3.00# svcadm disable ldmd
bash-3.00# pkgrm SUNWldm
sc> bootmode config="factory-default"
sc> powercycle -y
OK了：
SPARC Enterprise T5120, No Keyboard
Copyright 2009 Sun Microsystems, Inc. All rights reserved.
OpenBoot 4.30.2.b, 8064 MB memory available, Serial #86277064.
Ethernet address 0:21:28:24:7b:c8, Host ID: 85247bc8.
Boot device: disk File and args:
SunOS Release 5.10 Version Generic_139555-08 64-bit
Copyright 1983-2009 Sun Microsystems, Inc. All rights reserved.
Use is subject to license terms.
能正常进入系统了但网络有点问题：
Failed to plumb IPv4 interface(s): vsw0
Aug 21 19:52:24 svc.startd[7]: svc:/network/physical:default: Method "/lib/svc/method/net-physical" failed with exit status 96.
Aug 21 19:52:24 svc.startd[7]: network/physical:default misconfigured: transitioned to maintenance (see 'svcs -xv' for details)
要重配网络了
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