Moinak Ghosh writes: > Disk space might be cheap, but enough software and data bloat is present > and growing today to gobble up whatever space you can throw at it. IMHO > not supporting in-place upgrade will hit workstation users hard. Most > of the > disk space available will be partitioned off for various stuff and > there will > be multiboot configurations.
Note that Live Upgrade is generally used for the operating system itself. There's no reason to allocate space in the BE for user data and other things that LU doesn't address, and you don't have to use it for applications if you don't want to. (I've yet to meet the application that understands how to upgrade a mounted ABE anyway.) > It will be a pain to allocate space for > liveupgrade. > A short downtime is not a factor in this scenario. > > -> 2. There is no rollback mechanism, short of a full restore, if > something gets broken. > > ZFS root should help here. ZFS root should be the future of live upgrade. -- James Carlson, KISS Network <james.d.carlson at sun.com> Sun Microsystems / 1 Network Drive 71.232W Vox +1 781 442 2084 MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442 1677
