From mboxrd@z Thu Jan 1 00:00:00 1970 From: cigar562hfsp952fans@icebubble.org To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> References: Date: Thu, 20 Oct 2016 18:15:06 +0000 In-Reply-To: (Steven Stallion's message of "Wed, 19 Oct 2016 11:44:35 -0500") Message-ID: <868ttidh05.fsf@cmarib.ramside> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Subject: Re: [9fans] Fossil+Venti system memory requirements to be aware of? Topicbox-Message-UUID: a5fc6a7a-ead9-11e9-9d60-3106f5b1d025 Steven Stallion writes: > Sizing venti is also simple. I disagree with this. The best way to configure venti depends largely on how you plan to use it. I have multiple venti servers configured for different uses. For example, I keep my DVD images on a different venti server than I do for smaller, more frequently-used files such as mail. Choosing a good arena size isn't trivial, either. If you ever plan to back-up your venti to optical media, 640 MiB is the ideal arena size. There is a lot of math behind that determination, but its implications can be summarized as follows: Whether you're burning to standard CD-Rs, extended CD-Rs, DVDs, DVD DL, Blu-ray, flash media, or to another HDD, the amount of "wasted" space will never exceed 5% of the media's total capacity. In other words, the archvie will always be a minimum of 95% space-efficient. (Caveat: when burning 640 MiB arenas to optical media, you may need to turn off Joliet/Rock Rigde extensions in order to make the ISO image fit.) > and it's also relatively trivial to move your data between stores. I don't know that to be true. If the source and destination volumes are the same size, yes, it's easy to just dd the arenas. But if you're relocating to a smaller/larger partition, what would be an easy way to do that?