OVM for sparc (formerly known as LDOMs) explained Part 2 : Installation & ConfigurationOctober 1, 2012 by Sandeep patil Leave a Comment In the last part I walked you through the basics of LDOMs .lets now dive into the installation and configuration of LDOMs.The first thing you will need is a T-series hardware and OVM for sparc software. The latest version is 2.2 , if you are going to use this version please go through the hardware and software requirements as it does not support some old T-series hardware and also old firmware levels.Refer release notes for system requirementshttp://docs.oracle.com/cd/E35434_01/html/E23810/gentextid-296.html#ldomsrequiredsoftwarepatcheshttp://docs.oracle.com/cd/E23120_01/html/821-2856/gentextid-295.html#scrolltocOnce we the Operating system is ready with required patches and firmware level the installation of OVM software can begin.Download the software zip file and unzip it.# unzip p14054041_22_SOLARIS64.zip# cd p14054041_22_SOLARIS64/OVM_Server_SPARC-2_2/Install# ./install-ldmThats it and the OVM software is installed. pretty easy huh ! Now its time to reboot your system and creating your control domain.Creating Control Domain :Fist step is to ensure all the required services required for LDOMs to work are online.# svcs -a | grep ldomonline 12:32:11 svc:/ldoms/ldmd:defaultonline 12:32:11 svc:/ldoms/vntsd:defaultsvc:/ldoms/ldmd:default > service responsible for managing ldmd daemon which communicates directly with hypervisor for configuration and management tasks.svc:/ldoms/vntsd:default > service responsible for providing virtual network terminal services through the vntsd daemon.After the OVM software is installed all the resources in the server are by default assigned to control domain.# ldm listName State Flags Cons VCPU Memory Util Uptimeprimary active -t-cv SP 256 128G 0.6% 1h 13mAs you can see all the 256 threads and 128 GB of memory is assigned to the control domain.To create LDOMs some resources must be free and virtual serrvicesmust be created. Now primary domain should be given atleast 4 VCPU and 4 GB of memory.# ldm set-mau 1 primary# ldm set-vcpu 4 primary# ldm set-mem 4G primaryFor these settings to take effect primary domain must be rebooted.But before that it is good practise to configure the virtual services required to create the guest LDOMs.1.VCCfor creating VCC service a range of TCP ports must be specified. The LDOM console can be accessed through the port bound to it using telnet command.# ldm add-vcc port-range=5000-5100 primary-vcc0 primarywhere primary-vcc0 > is the VCC service name.2.VDSOnly one VDS can be configure per control or service domain.All virtual storage devices are serviced through VDS.# ldm add-vds primary-vds0 primarywhere primary-vds0 > is the VDS name3.VSWThius service enables logical domains to communicate with physical network.Unlike VDS, VSW is created for each network port we intend to usefor logical domains. We have 2 network ports which we are going to use for LDOMs.# ldm add-vsw net-dev=e1000g0 primary-vsw0 primary# ldm add-vsw net-dev=e1000g1 primary-vsw1 primaryUse below commands to check VCPUs and memory assigned to primary domain.# psrinfo -vp# prtdiag -v | grep -i memCheck for the services# ldm list-servicesConfiguring the First Guest DomainFirst step is to create the doamin and then assign resources to it.# ldm add-domain ldom1# ldm add-vcpu 4 ldom1# ldm add-mau 1 ldom1# ldm add-memory 4G ldom1here we have added 4 VCPU, 4GB memory and 1 MAU unit to the created LDOM.Now each LDOM has its own instance of OBP.so we can configure thestandard variable as we configure on a standalone servers.# ldm set-variable auto-boot\?=true ldom1# ldm set-variable local-mac-address\?=true ldom1# ldm set-variable boot-device=/virtual-devices@100/channel-devices@200/disk@0 ldom1Adding Storage to LDOMIts now time to configure storage for the LDOM.you have 3 options in this case1.local storage2.SAN storage3.Virtual Disk ImagesHere I will show you all the three methods you can use any one out of these.You can add a local ZFS volume# ldm add-vdsdev /dev/zvol/datapool/datavol ldom1-vdsk1@primary-vds0Or SAN disk# ldm add-vdsdev /dev/dsk/c5t6460160B5634565675677677A81DB11d0s2 ldom1-vdsk2@primary-vds0Or create an image file and assign it# mkfile 10g /var/tmp/disk01.img# ldm add-vdsdev /var/tmp/disk01.img ldom1-vdsk3primary-vds0Now the VDS device is added they must be assigned to the domain# ldm add-vdisk ldom1-vdsk1 ldom1-vdsk1@primary-vds0 ldom1After this we should configure virtual network ports and bind them VSW service.# ldm add-vnet ldom1-vnet0 primary-vsw0 ldom1# ldm add-vnet ldom1-vnet1 primary-vsw1 ldom1Now you can have jumpstart installation of your LDOM or you can add the ISO image of solaris 10 as vdisk in LDOM# ldm add-vdsdev /var/tmp/sol10.iso iso@primary-vds0# ldm add-vdisk iso iso@primary-vds0Finally commit all the changes made by us# ldm bind-domain ldom1# ldm start ldom1# ldm listName State Flags Cons VCPU Memory Util Uptimeprimary active -t-cv SP 4 4G 0.5% 3h 2mldom1 active -t- 5000 4 4G 0.3% 3m

Now connect to the LDOM on port 5000 as seen in the above command# telnet localhost 5000Trying 127.0.0.1...Connected to localhost.Escape character is ^].Connecting to console ldom1 in group ldom1 ....Press ~? for control options ..

{0} okOn ok prom devalias will show the iso image we added as a disk. You can boot from this iso as boot iso and start solaris 10 installation.Now your first LDOM is ready with solaris 10 installed on it. If you liked the LDOM basics articles subscribe/like/follow us.OVM for sparc (formerly known as LDOMs) explained Part 1 : The basicsOVM for sparc (formerly known as LDOMs) explained Part 2 : Installation & Con