On 03/31/10 17:53, Erik Trimble wrote:
Brett wrote:
Hi Folks,
Im in a shop thats very resistant to change. The management here are
looking for major justification of a move away from ufs to zfs for
root file systems. Does anyone know if there are any
whitepapers/blogs/discussions extolling the benefits of zfsroot over
ufsroot?
Regards in advance
Rep
I can't give you any links, but here's a short list of advantages:
(1) all the standard ZFS advantages over UFS
(2) LiveUpgrade/beadm related improvements
(a) much faster on ZFS
(b) don't need dedicated slice per OS instance, so it's far simpler to
have N different OS installs
(c) very easy to keep track of which OS instance is installed where
WITHOUT having to mount each one
(d) huge space savings (snapshots save lots of space on upgrades)
(3) much more flexible swap space allocation (no hard-boundary slices)
(4) simpler layout of filesystem partitions, and more flexible in
changing directory size limits (e.g. /var )
(5) mirroring a boot disk is simple under ZFS - much more complex under
SVM/UFS
(6) root-pool snapshots make backups trivially easy
ZFS root will be the supported root filesystem for Solaris Next; we've
been using it for OpenSolaris for a couple of years.
- Bart
--
Bart Smaalders Solaris Kernel Performance
bart.smaald...@oracle.com http://blogs.sun.com/barts
"You will contribute more with mercurial than with thunderbird."
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