Done with real hardware today. Works fine. -Bernd
On Fri, 12 Aug 2011 11:53:09 +0200 Bernd Maier <b...@hush.com> wrote: >Many thanks! I will try it this weekend. > >One additional question: > >How much RAM needs the Fossil+Venti Fileserver in total? > >-Bernd > >On Thu, 11 Aug 2011 10:11:27 +0200 David du Colombier ><0in...@gmail.com> wrote: >>In fact, it's pretty straightforward. >> >>In the following example, I consider you have a disk sdE0 >>with Fossil, and you want to add a disk sdE1 with Venti. >> >>Create the Venti partitions: >> >>disk/fdisk -baw /dev/sdE1/data >>disk/prep -bw -a^(isect arenas bloom) /dev/sdE1/plan9 >> >>Format the Venti file systems: >> >>venti/fmtisect isect /dev/sdE1/isect >>venti/fmtarenas arenas /dev/sdE1/arenas >>venti/fmtbloom /dev/sdE1/bloom >> >>Since the bloom filter requires memory equal to its size >>on disk, you could need to pass the parameter -s to fmtbloom >>to specify its size or directly adjust the partition size. >>Keep in mind that Venti use 20% total memory by default, and >>1/3 of it is allocated to the bloom filter. >>For example, with 1 GB of memory, you cannot have a bloom filter >>larger than 64 MB (which is sufficient) with the default >settings. >>Of course, the bloom filter is optional anyway. >> >>Configure Venti: >> >>echo 'index main >>isect /dev/sdE1/isect >>arenas /dev/sdE1/arenas >>bloom /dev/sdE1/bloom' | venti/conf -w /dev/sdE1/arenas >> >>Initialize the index sections: >> >>venti/fmtindex /dev/sdE1/arenas >> >>Read your current Fossil configuration: >> >>fossil/conf /dev/sdE0/fossil > fossil.conf >> >>Edit fossil.conf, it should look like something like: >> >>fsys main config /dev/sdE0/fossil >>fsys main open -V -c 3000 >> >>Remove -V to open and srv if needed, then >>add the following line to enable automatic >>snapshots: >> >>fsys main snaptime -s 60 -a 0530 -t 2880 >> >>(snapshot at 05:30, temporary snapshot each >> hour and discarded after two days) >> >>Write your new Fossil configuration: >> >>fossil/conf -w /dev/sdE0/fossil < fossil.conf >> >>Mount your 9fat file system, then add the following line >>to the file /n/9fat/plan9.ini: >> >>venti=#S/sdE1/arenas >> >>After rebooting, the current Fossil content will be dumped >>to Venti. >> >>-- >>David du Colombier
