On Oct 12, 2011, at 9:45 PM, Greg Earle wrote: > We have 2 T5140s and 6 T5120s in our facility. > > The 2 T5140s are in production use (Cassini flight project at JPL) and are > running with LDom 1.2, OBP 4.30.4.a and firmware 7.2.4.e. They are also > currently running Solaris 10 10/09. > > 2 of the T5120s are also in production use and have similar configurations. > > Our 4 development/test T5120s are running with LDom 2.0, OBP 4.32.2.b and > firmware 7.3.0.c. > > The Cassini project wants to upgrade the 2 T5140s to LDom 2.1 (as well as > firmware 7.4.0.d) to get the dynamic memory reconfiguration feature among > other things. They would also like to move to Solaris 10 9/10 as well since > 2.1 requires it. > > As you can see, however, we don't currently have any systems running 2.1 yet. > > They are therefore a bit nervous about this upgrade. They've asked us to > take our 'sandbox' development T5120 and see if we can downgrade it to LDom > 1.2/OBP 4.30.4/firmware 7.2.4.e first, to match their current configuration. > Then, from there, do the upgrade to LDom 2.1/OBP 4.32.2.b(?)/firmware 7.4.0.d > to make sure it will work OK on their machines. > > Is this downgrading possible?
We generally recommend against downgrading either sysFW or LDoms SW. At the very least, you can expect that your existing spconfigs will not work (or worse yet, cause problems with the older sysFW). > > If so, any gotchas/warnings/things to look out for? Is there any way to save > the existing client LDom configuration across such a downgrade? (XML file, > hand scribbling, ???) If you must downgrade, I recommend you remove the LDom Manager's constraint database (/var/opt/SUNWldm/ldom-db.xml) and all saved spconfigs first. You can try saving the constraints of your domains to XML file(s) (using "ldm ls-constraints -x [domain]"). We make no guarantees that these XML files will work on the older configuration, but in all likelihood they will (and if they don't it should be relatively straightforward to edit them to resolve any compatibility issues). HTH. -Eric > > I'm looking at this page: > > http://download.oracle.com/docs/cd/E19637-01/E21876-01/z400018e1008787.html > > and I'm seeing a "-c" option to the "flashupgrade" command that looks > somewhat promising. But I figured I better ask. (We contacted Oracle > Support, but they had no idea - apparently no one's tried it?) > > Thanks in advance, > > - Greg > > _______________________________________________ > ldoms-discuss mailing list > [email protected] > http://mail.opensolaris.org/mailman/listinfo/ldoms-discuss _______________________________________________ ldoms-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/ldoms-discuss
