From mboxrd@z Thu Jan 1 00:00:00 1970 To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> In-reply-to: Your message of "Thu, 13 Jan 2011 21:31:00 MST." References: <4D2F5B74.5070908@gmail.com> <4D2F6345.4020408@gmail.com> <87lj2ofl58.wl%john@profusion.lvoc.net> <4D2FCB0D.6010800@gmail.com> From: Bakul Shah Date: Fri, 14 Jan 2011 09:51:43 -0800 Message-Id: <20110114175144.7A7C45BFB@mail.bitblocks.com> Subject: Re: [9fans] Plan9 topology Topicbox-Message-UUID: 985cef3c-ead6-11e9-9d60-3106f5b1d025 On Thu, 13 Jan 2011 21:31:00 MST Duke Normandin wrote: > > > I wouldn't try it with less than a 20 GB disk, with say 2 GB for > > Fossil and the rest for Venti; unless you start storing music and > > video on there, that should give you plenty of room to work with. > > Ok! Can Venti be managed? As in, every so often, purge what isn't > needed? Not in the sense that you can purge specific files you don't want and continue using the same venti. But you can do what a copying garbage collector does -- it copies all the data *reachable* from the data `roots' (a set of objects you know you want). What is left behind is considered garbage and can be recycled. Similarly you can use venti tools to copy backups for specific days to a separate venti archive and periodically swap the roles of these two ventis. Though I don't know of anyone who does this. There is less of a need to do so as well since only a single copy of a given data block is stored regardless of how many file contain it.