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How to configure the Guest domains on LDOM ?

Guest domain is a top level virtual machine which we can create using the control domain. Guest domain will not perform any administrative operation on ldom but runs its own operating system  on it.Once you have completed the Oracle VM for SPARC tutorial 1 ,then you can start following  this article.We will see how we can create a new guest domain and allocate the resources to it.

Oracle VM for SPARC Tutorial:

Creating the new Guest Domain
Creating the new Guest Domain

1. Login to the control domain which we have already configured . (Refer Oracle VM for SPARC tutorial 1 )

2. You need to find out how much resources are available in the system.Use ldm list-devices -a command to get those details.

PD-bash# ldm list-devices -a
CORE
    ID      %FREE   CPUSET
    0       0       (0, 1, 2, 3, 4, 5, 6, 7)
    1       100     (8, 9, 10, 11, 12, 13, 14, 15)
    2       100     (16, 17, 18, 19, 20, 21, 22, 23)
    3       100     (24, 25, 26, 27, 28, 29, 30, 31)
    4       100     (64, 65, 66, 67, 68, 69, 70, 71)
    5       100     (72, 73, 74, 75, 76, 77, 78, 79)
    6       100     (80, 81, 82, 83, 84, 85, 86, 87)
    7       100     (88, 89, 90, 91, 92, 93, 94, 95)

VCPU
    PID     %FREE   PM
    0       0       no
    1       0       no
    2       0       no
    3       0       no
    4       0       no
    5       0       no
    6       0       no
    7       0       no
    8       100     ---   -------------->Free CPU's cores starts here.
    9       100     ---
    10      100     ---
    11      100     ---
    12      100     ---
    13      100     ---
    14      100     ---
    15      100     ---
    16      100     ---
    17      100     ---
    18      100     ---
    19      100     ---
    20      100     ---
    21      100     ---
    22      100     ---
    23      100     ---
    24      100     ---
    25      100     ---
    26      100     ---
    27      100     ---
    28      100     ---
    29      100     ---
    30      100     ---
    31      100     ---
    64      100     ---
    65      100     ---
    66      100     ---
    67      100     ---
    68      100     ---
    69      100     ---
    70      100     ---
    71      100     ---
    72      100     ---
    73      100     ---
    74      100     ---
    75      100     ---
    76      100     ---
    77      100     ---
    78      100     ---
    79      100     ---
    80      100     ---
    81      100     ---
    82      100     ---
    83      100     ---
    84      100     ---
    85      100     ---
    86      100     ---
    87      100     ---
    88      100     ---
    89      100     ---
    90      100     ---
    91      100     ---
    92      100     ---
    93      100     ---
    94      100     ---
    95      100     ---    -------------->Free CPU's cores ends here.

MAU
    ID      CPUSET                                  BOUND
    0       (0, 1, 2, 3, 4, 5, 6, 7)                primary
    1       (8, 9, 10, 11, 12, 13, 14, 15)
    2       (16, 17, 18, 19, 20, 21, 22, 23)
    3       (24, 25, 26, 27, 28, 29, 30, 31)
    4       (64, 65, 66, 67, 68, 69, 70, 71)
    5       (72, 73, 74, 75, 76, 77, 78, 79)
    6       (80, 81, 82, 83, 84, 85, 86, 87)
    7       (88, 89, 90, 91, 92, 93, 94, 95)

MEMORY
    PA                   SIZE            BOUND
    0x0                  512K            _sys_
    0x80000              1536K           _sys_
    0x200000             94M             _sys_
    0x6000000            32M             _sys_
    0x8000000            96M             _sys_
    0xe000000            32M             primary
    0x10000000           28416M            ------------------------------> Free Physical memory
    0x700000000          4G              primary

IO
    DEVICE           PSEUDONYM        BOUND   OPTIONS
    pci@400          pci_0            yes
    pci@500          pci_1            yes

PD-bash#

#

3.Create a  new Guest domain using the below command.

PD-bash# ldm add-domain ua1
PD-bash# ldm list-domain
NAME             STATE      FLAGS   CONS    VCPU  MEMORY   UTIL  UPTIME
primary          active     -n-cv-  SP      8     4128M    0.3%  17m
ua1              inactive   ------
PD-bash#

4.Add 8 vcpus to guest domain ua1.

PD-bash# ldm add-vcpu 8 ua1
PD-bash# ldm list-domain
NAME             STATE      FLAGS   CONS    VCPU  MEMORY   UTIL  UPTIME
primary          active     -n-cv-  SP      8     4128M    0.5%  17m
ua1              inactive   ------          8
PD-bash#

5.Add 4G memory to logical domain ua1.

PD-bash# ldm add-memory 4G ua1
PD-bash# ldm list-domain
NAME             STATE      FLAGS   CONS    VCPU  MEMORY   UTIL  UPTIME
primary          active     -n-cv-  SP      8     4128M    0.4%  18m
ua1              inactive   ------          8     4G
PD-bash#

6.Create a new virtual NIC on top the virtual switch and assigned to ua1. List the logical domain bindings to verify the configuration.

PD-bash# ldm add-vnet vnet0 primary-vsw0 ua1
PD-bash# ldm list-bindings ua1
NAME             STATE      FLAGS   CONS    VCPU  MEMORY   UTIL  UPTIME
ua1              inactive   ------          8     4G

UUID
    1e8baa72-a123-6184-f724-feebad1585eb

CONTROL
    failure-policy=ignore

DEPENDENCY
    master=

NETWORK
    NAME             SERVICE                     ID   DEVICE     MAC               MODE   PVID VID                  MTU   LINKPROP
    vnet0            primary-vsw0                0               00:14:4f:fb:54:92        1

PD-bash#

7.Now its time to add the new disks to logical domain “ua1” . Here   I am using “/dev/dsk/c4t0456RTE000005400002d0s2” LUN for ua1 domain .

8.First i am allocating the LUN to virtual disk server.

PD-bash# ldm add-vdiskserverdevice /dev/dsk/c4t600144F0B8E706DA00005300F4350005d0s2  vol0@primary-vds0
PD-bash# ldm list-services vds0
LDom "vds0" was not found
PD-bash# ldm list-services
VCC
    NAME             LDOM             PORT-RANGE
    primary-vc0      primary          5000-5100

VSW
    NAME             LDOM             MAC               NET-DEV   ID   DEVICE     LINKPROP   DEFAULT-VLAN-ID PVID VID                  MTU   MODE
    primary-vsw0     primary          00:14:4f:fa:12:0e nxge1     0    switch@0              1               1                         1500  

VDS
    NAME             LDOM             VOLUME         OPTIONS          MPGROUP        DEVICE
    primary-vds0     primary          vol0                                           /dev/dsk/c4t0456RTE000005400002d0s2

PD-bash#

9.Now bind the virtual disk to logical domain “ua1” which you have created in step 8 .

PD-bash# ldm add-vdisk vdisk0 vol0@primary-vds0 ua1
PD-bash# ldm list-bindings ua1
NAME             STATE      FLAGS   CONS    VCPU  MEMORY   UTIL  UPTIME
ua1              inactive   ------          8     4G

UUID
    1e8baa72-a123-6184-f724-feebad1585eb

CONTROL
    failure-policy=ignore

DEPENDENCY
    master=

NETWORK
    NAME             SERVICE                     ID   DEVICE     MAC               MODE   PVID VID                  MTU   LINKPROP
    vnet0            primary-vsw0                0               00:14:4f:fb:54:92        1

DISK
    NAME             VOLUME                      TOUT ID   DEVICE  SERVER         MPGROUP
    vdisk0           vol0@primary-vds0                0

PD-bash#

10.The same way you can map the ISO image file to guest domain using the below set of commands.

PD-bash# ldm add-vdiskserverdevice /export/home/sol-10-u10-ga2-sparc-dvd.iso
iso0@primary-vds0
PD-bash# ldm add-vdisk iso0 iso0@primary-vds0 ua1
PD-bash# ldm list-bindings ua1
NAME             STATE      FLAGS   CONS    VCPU  MEMORY   UTIL  UPTIME
ua1              inactive   ------          8     4G

UUID
    1e8baa72-a123-6184-f724-feebad1585eb

CONTROL
    failure-policy=ignore

DEPENDENCY
    master=

NETWORK
    NAME             SERVICE                     ID   DEVICE     MAC               MODE   PVID VID                  MTU   LINKPROP
    vnet0            primary-vsw0                0               00:14:4f:fb:54:92        1

DISK
    NAME             VOLUME                      TOUT ID   DEVICE  SERVER         MPGROUP
    vdisk0           vol0@primary-vds0                0
    iso0             iso0@primary-vds0                1

PD-bash#

11.Just bind the logical domain to the primary domain.

PD-bash# ldm list-domain
NAME             STATE      FLAGS   CONS    VCPU  MEMORY   UTIL  UPTIME
primary          active     -n-cv-  SP      8     4128M    0.4%  26m
ua1              inactive   ------          8     4G
PD-bash#
PD-bash# ldm bind-domain ua1
LDom ua1 started
PD-bash# ldm list-domain
NAME             STATE      FLAGS   CONS    VCPU  MEMORY   UTIL  UPTIME
primary          active     -n-cv-  SP      8     4128M    0.7%  30m
ua1              bind       ------  5000    8     4G        
PD-bash#

12.Set the auto-boot is false to logical domain “ua1” for Operating system installation.

PD-bash# ldm set-variable auto-boot\?=false ua1

13.Boot/start the logical domain “ua1”.

PD-bash# ldm start-domain ua1
LDom ua1 started
PD-bash# ldm list-domain
NAME             STATE      FLAGS   CONS    VCPU  MEMORY   UTIL  UPTIME
primary          active     -n-cv-  SP      8     4128M    0.7%  30m
ua1              active     -t----  5000    8     4G        12%  1s
PD-bash#

14. Take the console of the logical domain “ua1” .It uses the console port 5000 (see step:13)

ok boot iso0
PD-bash# telnet 192.168.2.11 5000
Trying 1192.168.2.11...
Connected to 192.168.2.11.
Escape character is '^]'.

Connecting to console "ua1" in group "ua1" ....
Press ~? for control options ..

{0} ok

15. List the devices to boot.

{0} ok devalias
iso0                     /virtual-devices@100/channel-devices@200/disk@1
vdisk0                   /virtual-devices@100/channel-devices@200/disk@0
vnet0                    /virtual-devices@100/channel-devices@200/network@0
net                      /virtual-devices@100/channel-devices@200/network@0
disk                     /virtual-devices@100/channel-devices@200/disk@0
virtual-console          /virtual-devices/console@1
name                     aliases
{0} ok

16.Boot the system from iso.

{0} ok boot iso0
Boot device: /virtual-devices@100/channel-devices@200/disk@1  File and args:
SunOS Release 5.10 Version Generic_147440-01 64-bit
Copyright (c) 1983, 2011, Oracle and/or its affiliates. All rights reserved.
Configuring devices.
Using RPC Bootparams for network configuration information.
Attempting to configure interface vnet0...
|

You have successfully created the guest domain and assigned the resources to it. You have also mapped the virtual disks to the virtualdisk server and mapped to the guest domain  or logical domain. In the end of the article ,we have see how to access the console of the guest domains and mapped the ISO file for OS installation.

Hope this article is informative to you .Please share it in social networks. Thank you for visiting UnixArena.

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5 comments

  1. Hi, Getting following error while starting os boot: Please suggest.

    NOTE: If you choose to customize, you should understand file systems, their
    intended purpose on the disk, and how changing them may affect the operation
    of the system.

    File sys/Mnt point Disk/Slice Size
    ========================================================================
    / c0d0s0 6992 MB
    swap c0d0s1 2051 MB
    overlap c0d0s2 307210 MB
    /export/home c0d0s7 298166 MB

    Esc-2_Continue Esc-3_Go Back Esc-4_Remote Mounts Esc-5_Exit Esc-6_Help
    – Profile ———————————————————————-
    The information shown below is your profile for installing Solaris software.
    It reflects the choices you’ve made on previous screens.

    ============================================================================

    Installation Option: Initial
    Boot Device: c0d0
    Root File System Type: UFS
    Client Services: None

    Locales: Saudi Arabia (UTF-8)
    System Locale: C ( C )

    Software: Solaris 10, Entire Distribution

    File System and Disk Layout: / c0d0s0 6992 MB
    swap c0d0s1 2051 MB
    /export/home c0d0s7 298166 MB

    —–Esc-2_Begin Installation Esc-4_Change Esc-5_Exit Esc-6_Help——-

    Esc-2_Begin Installation Esc-4_Change Esc-5_Exit Esc-6_Help

    Preparing system for Solaris install

    Configuring disk (c0d0)
    – Creating Solaris disk label (VTOC)

    ERROR: Could not create Solaris disk label (VTOC)

    ERROR: Could not label disks

    ERROR: Could not update disks with new configuration
    mkdir: “/a/var/sadm/launcher”: Read-only file system

    Could not update disks with new configuration
    Fatal Error
    Solaris installation program exited.

    ***********Failing********************************************

  2. Friends, I’m in middle of the implementation highly appreciate your input,

    Thanks a lot.

    Regards,
    Hajee

    • Syed Mohamed jamin

      Hi ,

      Really this help us lot to create the ldom’s in our environment…

      Can you Please brief about LDC in ldom… expecting clear explanation… Thanks in advance

      Thanks & Regards,
      Syed

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