On Mon, 2009-05-25 at 07:58 +0200, Vincenzo Ciancia wrote: > Il giorno lun, 25/05/2009 alle 02.09 +0200, Markus Hitter ha scritto: > > > > Craft a system where people can switch back and forth between > > different package versions. "This update broke foo?" -> Report a bug > > and switch foo back to the previous version -> Damage gone, user > > happy. > > Using alpha (which I do very often, and this reminds me I have to > download karmic) may lead to data loss. I recall a bug in the gnome > control center (which was in ubuntu for a short while), where you'd > loose your entire home directory in a single shot for a bug. I often > synchronise data with a portable disk but I do not version it, so if I > loose a directory and then synchronise without checking, I'm ******. > Yes, I should start using a different method. > > Crafting a safe testing environment ideally would mean to use a > filesystem with snapshots. I do not know how difficult would be to > implement snapshots in ubuntu but it seems that if it was easy we would > already have those. > We do already have those - you want to look up LVM. It's not as fancy as ZFS, but it does copy-on-write snapshots just fine, if a little less efficiently than you'd get with filesystem-level snapshots. It also lacks any form of swanky UI.
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