Virtualization - Using logical domains (LDom)
You have heard about this word "virtualization" now days in the IT world. Logical domains (LDOM) is one of the para virtualization available with the Sun Sparc T1 and T 2 systems(Sun4v). You can follow these simple steps to create your logical domains on your T1 and T2 systems. If you want to try it on x86 boxes , please use XEN
Before going to the install , understand the key components in LDOM's.
Hypervisor
Software piece works on the top of the hardware. Responsible for maintaining the isolation of domains. Interacts between the hardware and the OS.
Control Domain
Creats and manages the other logical domains ans service and services
Service, I/O domains
Provides the virtual network switch or virtual disk
Guest Domain
Uses the services from the services and I/O domains and is managed by the control domain. In broad term , can be considered as the additional OS which will get installed on the machine
Virtual devices
.All the guest domains will be accessing the virtual devices. Like CPU,memory MAU,NIC,Disks,Consoles.
Ldom manager
Controls hypervisor and all domains. It can run in any domain, but only 1 domain at a time. its a Cli utilty exposes to the administrator. maps logical domains to physical resources.
Now its ready for action:---
Get a T1000 or T2000 box
Install Solaris 10 U3 or higher
Connect to Service processor or SC to check the firmware version
sc> show host
Sun-Fire-T2000 System Firmware 6.4.2 2007/04/02 18:07
Host flash versions:
Hypervisor 1.4.1 2007/04/02 16:37
OBP 4.26.1 2007/04/02 16:26
POST 4.26.0 2007/03/26 16:45
Upgrade your system firmware if its below 6.4.2. If its below 6.4.2 , please follow the instruction mention at the bottom of this page or refer the firmware upgrade docs.
Check the OS verison and patch level
# uname -a
SunOS 5.10 Generic_118833-36 sun4v sparc SUNW,Sun-Fire-T200
# pkginfo -x | grep jass
upgrade the OS level or add the patches/packages
-bash-3.00# patchadd 124921-xx
-bash-3.00# patchadd 125043-xx
-bash-3.00# pkgadd -d SUNWldm
-bash-3.00# pkgadd -d SUNWjass
Ensure that the install packages and services are running
-bas>h-3.00# svcadm enable ldmd
-bash-3.00# svcadm enable vntsd
-bash-3.00# /opt/SUNWldm/bin/ldm list
Name State Flags Cons VCPU Memory Util Uptime
primary active -n-cv SP 32 32G 0.5% 6d 3h 29m
-bash-3.00# psrinfo -vp
The physical processor has 32 virtual processors (0-31)
UltraSPARC-T1 (cpuid 0 clock 1200 MHz)
-bash-3.00# ldm add-vdiskserver primary-vds0 primary
-bash-3.00# ldm add-vconscon port-range=5000-5100 \\
primary-vcc0 primary
-bash-3.00# ldm add-vswitch net-dev=e1000g0 primary-vsw0 primary
-bash-3.00# ldm set-vcpu 4 primary
-bash-3.00# ldm set-memory 1g primary
-bash-3.00# ldm add-config initial
-bash-3.00# ldm list-config
factory-default [current]
initial [next]
-bash-3.00# shutdown -y -g0 -i6
-bash-3.00# ldm add-domain myldom1
-bash-3.00# ldm set-vcpu 4 myldom1
-bash-3.00# ldm set-mau 1 myldom1
-bash-3.00# ldm set-memory 1g myldom1
-bash-3.00# ldm add-vnet vnet1 primary-vsw0 myldom1
-bash-3.00# ldm add-vdiskserverdevice /images/ldom1.disk vol1@primary-vds0
-bash-3.00# ldm add-vdisk vdisk1 vol1@primary-vds0 myldom1
-bash-3.00# ldm set-variable autoboot\\?=false myldom1
-bash-3.00# ldm set-variable boot-device=/virtual-devices@100/channel-devices@200/disk@0 myldom1
-bash-3.00# ldm bind-domain myldom1
-bash-3.00# ldm start-domain myldom1
Now your ldom is ready .You can follow the below steps to get your virtualized console
>-bash-3.00# telnet localhost 5000
Trying 127.0.0.1...
Connected to localhost....
Escape character is '\^}'.
Connecting to console “myldom1” in group “myldom1” ....
Press ~? for control options ..
{0} ok
>{0} ok show-disks
a) /virtual-devices@100/channel-devices@200/disk@0
q) NO SELECTION
Enter Selection, q to quit:q
{0} ok show-nets
a) /virtual-devices@100/channel-devices@200/network@0
q) NO SELECTION
Enter Selection, q to quit:q
{0} ok banner
Sun Fire T200, No Keyboard
Copyright 2007 Sun Microsystems, Inc. All rights reserved.
OpenBoot 4.26.1, 1024 MB memory available, Serial #66588434.
Ethernet address 0:14:4f:f8:f:12, Host ID: 83f80f12.
To Install Solaris OS using Jumpstart
{0} ok show-nets
a) /virtual-devices@100/channel-devices@200/network@0
q) NO SELECTION
Enter Selection, q to quit: a
/virtual-devices@100/channel-devices@200/network@0 has been selected.
Type \^Y ( Control-Y ) to insert it in the command line.
e.g. ok nvalias mydev \^Y
for creating devalias mydev for /virtual-devices@100/channel-devices@200/network@0
{0} ok nvalias vnet0 /virtual-devices@100/channel-devices@200/network@0
{0} ok boot vnet0
This will start the installation of Solaris from the jumpstart server in the network. Make sure you have added this mac id generated for ldom in the /etc/ethers file of your jumpstart server to start it.
To use file as virtual disk to install Solaris on Guest domain
#/usr/sbin/mkdir -p /ldoms/disk-images
# /usr/sbin/mkfile 5G /ldoms/disk-images/s10-5g.img
# ldm add-vdsdev /ldoms/disk-images/s10-5g.img vol2@primary-vds0
# ldm add-vdisk vdisk2 vol2@primary-vds0 myldom1
You have heard about this word "virtualization" now days in the IT world. Logical domains (LDOM) is one of the para virtualization available with the Sun Sparc T1 and T 2 systems(Sun4v). You can follow these simple steps to create your logical domains on your T1 and T2 systems. If you want to try it on x86 boxes , please use XEN
Before going to the install , understand the key components in LDOM's.
Hypervisor
Software piece works on the top of the hardware. Responsible for maintaining the isolation of domains. Interacts between the hardware and the OS.
Control Domain
Creats and manages the other logical domains ans service and services
Service, I/O domains
Provides the virtual network switch or virtual disk
Guest Domain
Uses the services from the services and I/O domains and is managed by the control domain. In broad term , can be considered as the additional OS which will get installed on the machine
Virtual devices
.All the guest domains will be accessing the virtual devices. Like CPU,memory MAU,NIC,Disks,Consoles.
Ldom manager
Controls hypervisor and all domains. It can run in any domain, but only 1 domain at a time. its a Cli utilty exposes to the administrator. maps logical domains to physical resources.
Now its ready for action:---
Get a T1000 or T2000 box
Install Solaris 10 U3 or higher
Connect to Service processor or SC to check the firmware version
sc> show host
Sun-Fire-T2000 System Firmware 6.4.2 2007/04/02 18:07
Host flash versions:
Hypervisor 1.4.1 2007/04/02 16:37
OBP 4.26.1 2007/04/02 16:26
POST 4.26.0 2007/03/26 16:45
Upgrade your system firmware if its below 6.4.2. If its below 6.4.2 , please follow the instruction mention at the bottom of this page or refer the firmware upgrade docs.
Check the OS verison and patch level
# uname -a
SunOS 5.10 Generic_118833-36 sun4v sparc SUNW,Sun-Fire-T200
# pkginfo -x | grep jass
upgrade the OS level or add the patches/packages
-bash-3.00# patchadd 124921-xx
-bash-3.00# patchadd 125043-xx
-bash-3.00# pkgadd -d SUNWldm
-bash-3.00# pkgadd -d SUNWjass
Ensure that the install packages and services are running
-bas>h-3.00# svcadm enable ldmd
-bash-3.00# svcadm enable vntsd
-bash-3.00# /opt/SUNWldm/bin/ldm list
Name State Flags Cons VCPU Memory Util Uptime
primary active -n-cv SP 32 32G 0.5% 6d 3h 29m
-bash-3.00# psrinfo -vp
The physical processor has 32 virtual processors (0-31)
UltraSPARC-T1 (cpuid 0 clock 1200 MHz)
-bash-3.00# ldm add-vdiskserver primary-vds0 primary
-bash-3.00# ldm add-vconscon port-range=5000-5100 \\
primary-vcc0 primary
-bash-3.00# ldm add-vswitch net-dev=e1000g0 primary-vsw0 primary
-bash-3.00# ldm set-vcpu 4 primary
-bash-3.00# ldm set-memory 1g primary
-bash-3.00# ldm add-config initial
-bash-3.00# ldm list-config
factory-default [current]
initial [next]
-bash-3.00# shutdown -y -g0 -i6
-bash-3.00# ldm add-domain myldom1
-bash-3.00# ldm set-vcpu 4 myldom1
-bash-3.00# ldm set-mau 1 myldom1
-bash-3.00# ldm set-memory 1g myldom1
-bash-3.00# ldm add-vnet vnet1 primary-vsw0 myldom1
-bash-3.00# ldm add-vdiskserverdevice /images/ldom1.disk vol1@primary-vds0
-bash-3.00# ldm add-vdisk vdisk1 vol1@primary-vds0 myldom1
-bash-3.00# ldm set-variable autoboot\\?=false myldom1
-bash-3.00# ldm set-variable boot-device=/virtual-devices@100/channel-devices@200/disk@0 myldom1
-bash-3.00# ldm bind-domain myldom1
-bash-3.00# ldm start-domain myldom1
Now your ldom is ready .You can follow the below steps to get your virtualized console
>-bash-3.00# telnet localhost 5000
Trying 127.0.0.1...
Connected to localhost....
Escape character is '\^}'.
Connecting to console “myldom1” in group “myldom1” ....
Press ~? for control options ..
{0} ok
>{0} ok show-disks
a) /virtual-devices@100/channel-devices@200/disk@0
q) NO SELECTION
Enter Selection, q to quit:q
{0} ok show-nets
a) /virtual-devices@100/channel-devices@200/network@0
q) NO SELECTION
Enter Selection, q to quit:q
{0} ok banner
Sun Fire T200, No Keyboard
Copyright 2007 Sun Microsystems, Inc. All rights reserved.
OpenBoot 4.26.1, 1024 MB memory available, Serial #66588434.
Ethernet address 0:14:4f:f8:f:12, Host ID: 83f80f12.
To Install Solaris OS using Jumpstart
{0} ok show-nets
a) /virtual-devices@100/channel-devices@200/network@0
q) NO SELECTION
Enter Selection, q to quit: a
/virtual-devices@100/channel-devices@200/network@0 has been selected.
Type \^Y ( Control-Y ) to insert it in the command line.
e.g. ok nvalias mydev \^Y
for creating devalias mydev for /virtual-devices@100/channel-devices@200/network@0
{0} ok nvalias vnet0 /virtual-devices@100/channel-devices@200/network@0
{0} ok boot vnet0
This will start the installation of Solaris from the jumpstart server in the network. Make sure you have added this mac id generated for ldom in the /etc/ethers file of your jumpstart server to start it.
To use file as virtual disk to install Solaris on Guest domain
#/usr/sbin/mkdir -p /ldoms/disk-images
# /usr/sbin/mkfile 5G /ldoms/disk-images/s10-5g.img
# ldm add-vdsdev /ldoms/disk-images/s10-5g.img vol2@primary-vds0
# ldm add-vdisk vdisk2 vol2@primary-vds0 myldom1
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