Re: [9fans] FileServer grid

[Giacomo Tesio <giacomo@tesio.it>]

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Sorry Uriel... I was meaning that I wouldn't be able to download it.


BTW my main problem is to know if, in a grid of plan 9 fileservers, there
could be any kind of replication, keeping files reachable when a node goes
down.


Giacomo

On Sat, Feb 7, 2009 at 11:57 PM, Uriel <uriel99@gmail.com> wrote:

> The link is *not* broken, plan9.bell-labs.com is, sadly and
> unsurprisingly, broken.
>
> uriel
>
> On Sat, Feb 7, 2009 at 6:32 PM, Giacomo Tesio <giacomo@tesio.it> wrote:
> > I'd like to move our softwares to Linux + Apache (where mounting a 9p
> > fileserver would be easy), but actually it's a Windows + IIS.
> >
> > I would write a session state service for ASP.NET connecting it in 9p
> (using
> > c# and the 9pc implementation linked by
> > http://9p.cat-v.org/implementations... actually the link is broken...)
> >
> > If the filesystem grid work as I've understood, there would be only ONE
> > filesystem.
> >
> > So, saving session state in the grid would make it available to all web
> > servers connected to the filesystem, allowing load balance and high
> > availability for the web servers (when one crash, the user sessions it
> was
> > handling would be available to the others web server).
> >
> > But what if a node of the grid goes down? There would be a way to keep
> files
> > in it replicated in other cpu node?
> >
> >
> > Giacomo
> >
> > On Fri, Feb 6, 2009 at 11:41 PM, Roman V. Shaposhnik <rvs@sun.com>
> wrote:
> >>
> >> On Fri, 2009-02-06 at 23:26 +0100, Giacomo Tesio wrote:
> >> > Hello every one...
> >> > In a context of really heavy load and high availability needs, I'm
> >> > evaluating plan 9 to implement a fileserver grid to be used by a web
> >> > server for temporary storage (session's serializations, for example).
> >>
> >> What OS do you web servers run under?
> >>
> >> > I'd like to build a Plan 9 grid exposing a unique filesystem mounted
> >> > by all the web servers.
> >>
> >> Are you going to talk to this filesystem using 9P or something else?
> >>
> >> > Each session could be accessible from any web server instantly, but
> >> > what if a fileserver in the grid break?
> >> > Is there a way to mantain such a session (actually the file storing
> >> > the session data) available by keeping it sincronized beetween the
> >> > Plan 9 fileservers?
> >>
> >> This is unclear. Please restate.
> >>
> >> Thanks,
> >> Roman.
> >>
> >>
> >
> >
>
>

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