Last week I attended Community One at which the latest release of OpenSolaris was announced. As in previous versions, running Trusted Extensions requires a few workarounds to deal with changes in zone behavior such as cloning and the use of IPS packages. The steps are described here.
One outstanding issue is the support of sparse-root zones. This is the feature in which the non-global zones share read-only mounts of the global zone's filesystems, such as /usr, /lib, /platform, /sbin, and /opt. While this feature is currently being used in the Trusted Extensions labeled zone configuration, it is not supportable by the underlying IPS packaging system. There is a more complete discussion on this issue in Dan Price's blog entry A field guide to Zones in OpenSolaris 2008.05.
While we are evaluating alternatives to the sparse-root zone configuration, we plan to provide an updated installation procedure based on whole-root zones. These labeled zones will contain only the packages which are necessary and sufficient to run the multilevel desktop. Since all the zones are based on ZFS datasets, cloning will be used to minimize disk space and installation time. These updates will be made available in the Development Release Packaging Repository. I'll make another posting when they are available for download.