From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <994ee6c5e47581a10588f2b1a712a123@coraid.com> From: erik quanstrom Date: Thu, 29 Mar 2007 07:22:33 -0400 To: 9fans@cse.psu.edu Subject: Re: [9fans] fossil+venti backup question In-Reply-To: <460B9D16.5070503@enerla.net> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Topicbox-Message-UUID: 35eb26c4-ead2-11e9-9d60-3106f5b1d025 On Thu Mar 29 07:05:00 EDT 2007, bituman@enerla.net wrote: > From time to time i get back to plan9 and starting fiddling with it, > now i might found a reason to make it useful where i work.. > If i understand correctly, venti uses fossil as a write buffer for > today's modifications, and if i want to access data in previous week's > state, then files are served by venti. fossil is not a proper cache. fossil uses venti for archival snapshots (this would be called a dump in ken's fileserver). fossil is useful without venti. in fact, i think fossil without venti is better for a combined auth/cpu/fileserver as fossil is much kinder if you turn the machine off or hang it. the downside is if you do have a venti, > Or (as i read in plan 9 intro pdf): "In some cases, a single file server > may provide more than one file tree. this means you can connect to different file trees. so i can connect to kibbiee like this ; srv il!kibbiee kibbiee then mount the other filesystem, dump or main respectively ; mount /srv/kibbiee /n/other other ; mount /srv/kibbiee /n/dump dump ; mount /srv/kibbiee /n/kibbiee the 3d argument to mount is the "attach point". the server is free to choose a default, which for ken's fs is "main" and for fossil is "active". fossilcons(8) explains how to make different fossil filesystems. typically all you need is one. > > What id like to know is: > can i simply use fossil yes. you don't get archival snapshots without venti. you could use vac to roll your own. > or do i need fossil+venti? > can backup period (currently daily) be set to stg. else? Like every two > hours? you'd have to do this manually. you get one archive per day. - erik