James Carlson wrote: > 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. > > ZFS root is the future of live upgrade in Caiman. It will take seconds to do a live upgrade, using the ZFS snapshot and clone capabilities.
sarah ****
