this is old but interesting blog on sparse zone in opensolaris / solaris 11 http://www.eecis.udel.edu/~bmiller/blog/2010/03/15/sparse-zones-not-supported-in-opensolaris/
Sent from my iPad Hung-Sheng Tsao ( LaoTsao) Ph.D On Sep 7, 2011, at 7:42, Paul Kraus <p...@kraus-haus.org> wrote: > On Tue, Sep 6, 2011 at 5:11 PM, Mike Gerdts <mike.ger...@oracle.com> wrote: > >>> 3)zfs dataset requirement >> >> How does this negatively impact you or other users? As of Solaris 11 >> Express, this requirement means that you have to run 'zfs create' once >> to create a ZFS filesystem that will be the parent of an arbitrry number >> of zones. >> >> I personally would not advocate a configuration where each zone is not >> on its own file system because a disk hog in one zone can deny service >> to other zones. > > Be very careful here. If you allocate all of your Zones from a > single zpool and do NOT use quotas (and reservations) you can have one > Zone run the others out of disk space. Does the automatic (under the > covers) zfs create in Solaris 11 also automate setting reasonable > quotas and reservations ? > > I don't want folks who are less familiar with ZFS to make that mistake. > >> While I was working for a Fortune 10 company and >> introduced zones early in Solaris 10's life, I ensured that every zone >> had its own file system on a SVM soft partition. This approach worked >> well for many years, but took a significant amount of effort to >> automate. The integration of ZFS and Zones simplifies this type of >> architecture greatly. > > We have used almost exclusively sparse root zones; for the space > efficiency, the global patching model, and the security of a read only > OS. I will be sorry to see the option of a sparse root zone go away. > > -- > {--------1---------2---------3---------4---------5---------6---------7---------} > Paul Kraus > -> Senior Systems Architect, Garnet River ( http://www.garnetriver.com/ ) > -> Sound Designer: Frankenstein, A New Musical > (http://www.facebook.com/event.php?eid=123170297765140) > -> Sound Coordinator, Schenectady Light Opera Company ( > http://www.sloctheater.org/ ) > -> Technical Advisor, RPI Players _______________________________________________ zones-discuss mailing list zones-discuss@opensolaris.org