Wednesday Jun 04, 2008

Upgrading to LDoms 1.0.3

Nick Ruth recently posted a question on the LDoms Discuss forum on how to upgrade from LDoms 1.0.1 to LDoms 1.0.3 (see thread here). The Administration Guide does explain the procedure to install and enable the LDoms software, but its not exactly clear what the actual steps are. So Nick posted his question on the OpenSolaris Forum and after discussions with several developers, including myself, he answered his own question on the thread. I have copied his post below verbatim to hopefully expand the reach of this discussion. (Special thanks to Nick for his initiative and following through.)

The steps to follow to upgrade from LDOM 1.0.1 and LDOM 1.0.2 to LDOM 1.0.3

1. Ensure Firmware is at the appropriate level (minimum of 6.6.x for T1 platform and 7.1.x) for T2 platform. Note that the Admin guide states that 6.5 and 7.0 are the minimum levels but the release notes state that 6.6 and 7.1 are the required level for 1.0.3 functionality.

2. Ensure the Solaris OS is at the appropriate kernel level. The Release notes have Solaris 10 11/06 (update 3) at kernel level 127127-11 as the absolute minimum. For update 4 (08/07) it's still kernel level 127127-11 and update 5 (05/08) starts at kernel level 127127-11.

3. Stop the guest domains. I brought the guest domains down to the OK prompt and then issued the ldm stop-domain ldomname from the control domain before proceeding.

4. For safety sake issue the ldm ls-constraints ldomname > /tmp/ldomname.xml command so that you have a listing of the definitions for the ldom.

5) svcadm disable ldmd
6) pkgrm SUNWldm
7) pkgadd the new SUNWldm (pkgadd -Gd . SUNWldm.v)
8) svcadm refresh ldmd
9) svcadm enable ldmd

10) After ensuring that the ldmd service is "online" - ldm start-domain ldomname

The following caveat should also be noted:

The admin guide states that existing LDOMS 1.0.1 or 1.0.2 configurations are compatible with 1.0.3. This is not entirely the case. The upgrade section needs to be amended to point out the following: If the backend volume is a disk slice or a volume manager volume then the virtual disk backend must be re-exported with options=slice. If this reconfiguration is not done the guest domain will not be able to see the disk service and will get I/O errors. Hope this helps others.

(end of Nick's post)

For more information on LDoms 1.0.3, here's the link to my LDoms 1.0.3 entry.

Monday Oct 15, 2007

San Diego Open Solaris User Group Meeting - Wed 10/15/07 - LDoms

The San Diego Open Solaris Users Group will be having its monthly meeting this Wednesday.

Here's the meeting information and everyone is invited to attend:
Meeting: Wednesday, October 17 at 6:00pm
LOCATION:
Sun Microsystems
9515 Towne Centre Drive
San Diego, CA 92121
Building SAN10 - 2nd floor - Gas Lamp Conference Room

Our October meeting will feature a presentation on Logical Domains given by Haik Aftandilian. Logical Domains provide server virtualization for UltraSPARC-T1 (Niagara) and UltraSPARC-T2 (Niagara2) based systems. This talk will provide an introduction to the Logical Domains design and implementation as well as the "sun4v" architecture. More information is available in the SDOSUG Home Page. Also, you can sign up for our SDOSUG mailing list and participate in our local discussion forum.

And see my previous post on the announcement of the LDoms 1.0.1 Release.

Thursday Oct 11, 2007

Logical Domains (LDoms) 1.0.1 available!

LDoms 1.0.1 is now available for download here!

The major changes for this release of LDoms are support for:

  • Sun SPARCĀ® Enterprise T5120 and T5220 servers plus the Network Interface Unit (NIU)
  • Sun Multithreaded 10GbE card (nxge driver)
  • Forced stop on an I/O service domain
  • I/O domain reset
  • Logical Domains (LDoms) Management Information Base (MIB) 1.0.1 software
  • Logical domains minimization
  • XML input and output enhancements for certain ldm commands and for the LDoms MIB.

Supported Servers

Documentation available on http://docs.sun.com

  • Logical Domains (LDoms) 1.0.1 Administration Guide (html)(pdf)
  • Logical Domains (LDoms) 1.0.1 Release Notes (html)(pdf)
  • Logical Domains (LDoms) Man Page Guide (pdf)
  • Logical Domains (LDoms) Management Information Base (MIB) 1.0.1 Administration Guide (html)(pdf)
  • Logical Domains (LDoms) Management Information Base (MIB) 1.0.1 Release Notes (html)(pdf)

See The Download Page, README and/or Release Notes for required Software and patches

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