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How to Add the Same ISO image file in Multiple LDOMS ?

In oracle VM for SPARC (LDOM), you need to attach the ISO file to each logical domain, for the first time operating system installation. If you have pre-configured jumpstart , You can use it for the guest domain operating system installation. If you don’t have jumpstart,then you need to install it using the ISO image. By default LDOM will not allow to map the same device file to multiple guest domains .Here we will see how we can map the same ISO image to multiple LDOMS.

Oracle VM for SPARC Tutorial:

LDOM ISO file1

1. Login to the control domain and list the ISO image which you need to map it to ldoms.

# ls /export/home/sol-10-u10-ga2-sparc-dvd.iso
sol-10-u10-ga2-sparc-dvd.iso

2.List the available services. Create a new virtual device for the virtual disk server using the below command.

-bash-3.2# ldm list-services
VCC
    NAME             LDOM             PORT-RANGE
    primary-vcc0     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:fe:49 e1000g0   0    switch@0              1               1                         1500  

VDS
    NAME             LDOM             VOLUME         OPTIONS          MPGROUP        DEVICE
    primary-vds0     primary          vol1                                           /dev/zvol/dsk/pool1/vol1
                                      clonevol1                                      /dev/zvol/dsk/pool1/clonevol1
                                      vol0                                           /dev/dsk/c2t600144F0B8E706DA00005300F47B0007d0s2
                                      vol10                                          /dev/dsk/c2t600144F0C1135B4900005303839A0002d0s2

# ldm add-vdsdev options=ro /export/home/sol-10-u10-ga2-sparc-dvd.iso newiso@primary-vds0
-bash-3.2# ldm list-services
VCC
    NAME             LDOM             PORT-RANGE
    primary-vcc0     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:fe:49 e1000g0   0    switch@0              1               1                         1500  

VDS
    NAME             LDOM             VOLUME         OPTIONS          MPGROUP        DEVICE
    primary-vds0     primary          vol1                                     /dev/zvol/dsk/pool1/vol1
                                      clonevol1                                /dev/zvol/dsk/pool1/clonevol1
                                      vol0                         /dev/dsk/c2t600144F0B8E706DA00005300F47B0007d0s2
                                      vol10                        /dev/dsk/c2t600144F0C1135B4900005303839A0002d0s2   
                                      iso0           ro            /export/home/sol-10-u10-ga2-sparc-dvd.iso

3.Add the newly created virtual read-only iso image to guest domain.

-bash-3.2# ldm list-domain
NAME             STATE      FLAGS   CONS    VCPU  MEMORY   UTIL  UPTIME
primary          active     -n-cv-  SP      12    4128M    0.3%  5h 45m
ua1              active     -n----  5000    8     4G       0.1%  58m
ua2              active     -n----  5001    8     2G       0.0%  58m
ua3              active     -n----  5002    4     1G       0.1%  30m
-bash-3.2# ldm add-vdisk viso1 newiso@primary-vds0 ua1
-bash-3.2#

4.You can see that ISO file has been attached to the ua1 ldom.

-bash-3.2# ldm ls-bindings ldom1
NAME             STATE      FLAGS   CONS    VCPU  MEMORY   UTIL  UPTIME
ldom1            bound      ------  5000    8     512M

DISK
    NAME             VOLUME                      TOUT ID   DEVICE  SERVER         MPGROUP
    vdisk1           vol1@primary-vds0                2    disk@2  primary
    viso1            newiso@primary-vds0              0    disk@0  primary

5.When try to map the same iso virtual image to another domain, you will get below error.

-bash-3.2# ldm add-vdisk viso2 newiso@primary-vds0 ua2
The volume "newiso" is already in use.

6.To avoid the above error, you need to create a new virtual read-only ISO image again.

-bash-3.2# ldm add-vdsdev options=ro /export/home/sol-10-u10-ga2-sparc-dvd.iso newiso2@primary-vds0
-bash-3.2#

7.Add the second virtual iso image to the another LDOM using the below command.

-bash-3.2# ldm add-vdisk viso2 newiso2@primary-vds0 ua2
-bash-3.2#
-bash-3.2# ldm list-bindings ua2
NAME             STATE      FLAGS   CONS    VCPU  MEMORY   UTIL  UPTIME
ua2              active     -n----  5001    8     2G       0.1%  1h 3m
DISK
    NAME             VOLUME                      TOUT ID   DEVICE  SERVER         MPGROUP
    vdisk1           ua1ldom2@primary-vds0            0    disk@0  primary
    viso2            newiso2@primary-vds0             1    disk@1  primary

The same way you can map the same ISO file to N-number of guest domains.(6 and 7 ).

Hope this article is informative to you. Thank you for visiting UnixArena.

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