From mboxrd@z Thu Jan 1 00:00:00 1970 MIME-Version: 1.0 In-Reply-To: <5d375e920902071457q34f69810rbdf6771613f9f824@mail.gmail.com> References: <1233960107.6196.54.camel@goose.sun.com> <5d375e920902071457q34f69810rbdf6771613f9f824@mail.gmail.com> Date: Sun, 8 Feb 2009 16:24:53 +0100 Message-ID: From: Giacomo Tesio To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> Content-Type: multipart/alternative; boundary=000e0cd6ac1014c975046269db34 Subject: Re: [9fans] FileServer grid Topicbox-Message-UUID: 99caefd8-ead4-11e9-9d60-3106f5b1d025 --000e0cd6ac1014c975046269db34 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit 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 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 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 > 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. > >> > >> > > > > > > --000e0cd6ac1014c975046269db34 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable 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 no= de goes down.


Giacomo

On Sat, Feb 7, 2009 at 1= 1:57 PM, Uriel <u= riel99@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
> htt= p://9p.cat-v.org/implementations... actually the link is broken...)
>
> If the filesystem grid work as I've understood, there would be onl= y ONE
> filesystem.
>
> So, saving session state in the grid would make it available to all we= b
> 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 b= y a web
>> > server for temporary storage (session's serializations, f= or example).
>>
>> What OS do you web servers run under?
>>
>> > I'd like to build a Plan 9 grid exposing a unique filesys= tem mounted
>> > by all the web servers.
>>
>> Are you going to talk to this filesystem using 9P or something els= e?
>>
>> > Each session could be accessible from any web server instantl= y, but
>> > what if a fileserver in the grid break?
>> > Is there a way to mantain such a session (actually the file s= toring
>> > the session data) available by keeping it sincronized beetwee= n the
>> > Plan 9 fileservers?
>>
>> This is unclear. Please restate.
>>
>> Thanks,
>> Roman.
>>
>>
>
>


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