On Wed 07 Sep 2011 at 07:42AM, Paul Kraus 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.
Very good point - thanks for making it. > > > 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. I understand your concerns here and I look forward to the day that I can talk about what Solaris 11 has to offer to address them. -- Mike Gerdts Solaris Core OS / Zones _______________________________________________ zones-discuss mailing list email@example.com