Re: [9fans] Fossil+Venti on Linux

2008-05-29 Thread Russ Cox
>> http://project-iris.net/isw-2003/papers/sit.pdf > > Sounds very intersting. > Is there any source code available ? Most of what is described in that paper is now libventi, vbackup, and vnfs. There was some notion that it would be interesting to try storing data in a peer-to-peer storage syste

Re: [9fans] Fossil+Venti on Linux

2008-05-29 Thread Wes Kussmaul
erik quanstrom wrote: with a 1 machine solution, i don't need any more disks to have a full mirror and i have the option of raid5 which will reduce the number of disks i need to 10TB + 1 disk. since your model is that the storage is a significant expense, a single raid5 machine would make more

Re: [9fans] Fossil+Venti on Linux

2008-05-29 Thread erik quanstrom
>> since storage is very cheep, i think this is a good tradeoff. > > I'm thinking of an scale where storage isn't that cheap ... what scale is that? >> what problem are you trying to solve? if you are trying to go for >> reliability, i would think it would be easier to use raid+backups >> for d

Re: [9fans] Fossil+Venti on Linux

2008-05-29 Thread Enrico Weigelt
* Christian Kellermann <[EMAIL PROTECTED]> wrote: > IIRC Russ et al. have written a paper on connecting a venti server > to a distributed hash table (like chord) I think the word to google > for would be venti and dhash. > > http://project-iris.net/isw-2003/papers/sit.pdf Sounds very intersting.

Re: [9fans] Fossil+Venti on Linux

2008-05-29 Thread Christian Kellermann
IIRC Russ et al. have written a paper on connecting a venti server to a distributed hash table (like chord) I think the word to google for would be venti and dhash. http://project-iris.net/isw-2003/papers/sit.pdf HTH Christian -- You may use my gpg key for replies: pub 1024D/47F79788 2005/02/

Re: [9fans] Fossil+Venti on Linux

2008-05-29 Thread Enrico Weigelt
* erik quanstrom <[EMAIL PROTECTED]> wrote: > > As a more sophisticated aproach, I'm planning an *real* clustered > > venti, which also keeps track of block atime's and copy-counters. > > This way, seldomly used blocks can be removed from one node as long > > as there are still enough copies in t

Re: [9fans] Fossil+Venti on Linux

2008-05-25 Thread erik quanstrom
> You could adapt Plan B's bns to fail over between different FSs. But... > We learned that although you can let he FS fail over nicely, many other > things stand in the way making it unnecessary to fail over. For example, > on Plan 9, cs and dns have problems after a fail over, your IP address > m

Re: [9fans] Fossil+Venti on Linux

2008-05-25 Thread Francisco J Ballesteros
> I believe the Plan B folks did some work with fail-over (amongst other > things) that might be applicable. Beyond that, if you want to get what you You could adapt Plan B's bns to fail over between different FSs. But... We learned that although you can let he FS fail over nicely, many other thin

Re: [9fans] Fossil+Venti on Linux

2008-05-25 Thread a
I'm not running Linux, but I've run venti+fossil on Mac OS X for testing. I intend to use venti there regularly once I figure out how to get OS X to let me get at a raw partition that isn't mounted (anyone?). I don't think venti+fossil will do what you're looking for, however, at least not without

[9fans] Fossil+Venti on Linux

2008-05-25 Thread Enrico Weigelt
Hi folks, is anyone already running venti+fossil on Linux ? I've got several machines, where I need an remote backup (via DSL link) with a few days living snapshots. Ideally the backup should be directly accessible, so when one machine goes down a while, the backup one can take over. The vent