Re: [9fans] Driver for SAN adapter

Re: [9fans] Driver for SAN adapter

[YAMANASHI Takeshi]

> >> > btw, you might be able to use a large unix file on
> >> > the IBM ESS mounted via u9fs for a venti arena.
> >
> > This might not be correct
>
> why?

I meant that I wasn't sure if it is correct to use a large
hole file and fmtarena it with "-z" option instead of zero'ing
the whole unix file (ie, without "-z" option).

I don't doubt that using unix files as sources of kfs/fossil/venti
is a good idea.  :)
--

Re: [9fans] Driver for SAN adapter

[vdharani]

>> >> > btw, you might be able to use a large unix file on
>> >> > the IBM ESS mounted via u9fs for a venti arena.
>> >
>> > This might not be correct
>>
>> why?
>
> I meant that I wasn't sure if it is correct to use a large
> hole file and fmtarena it with "-z" option instead of zero'ing
> the whole unix file (ie, without "-z" option).

but where has he mentioned about using a large hole file? he only says
about using a large file.

or am i missing something?

thanks
dharani

Re: [9fans] Driver for SAN adapter

[vdharani]

> On Wed Mar 23 15:20:31 JST 2005, Matthias Teege wrote:
>> > btw, you might be able to use a large unix file on
>> > the IBM ESS mounted via u9fs for a venti arena.
>
> This might not be correct

why?

long back i was thinking that it should be possible use
high-end SCSI disks and use raw disk interface on Linux
and use this setup from plan9 as disk area for kfs.
I was thinking about a TCP/UDP kind of communication
but thats what u9fs does anyway. so i think it is a good idea.

similarly, i think one can use flash disks or thumb drives with
venti to carry plan9 data.

thanks
dharani

Re: [9fans] Driver for SAN adapter

[YAMANASHI Takeshi]

On Wed Mar 23 15:20:31 JST 2005, Matthias Teege wrote:
> > btw, you might be able to use a large unix file on
> > the IBM ESS mounted via u9fs for a venti arena.

This might not be correct, but I created a large (~20GB)
hole file on unix and initialized it by fmtarenas
with "-z" option.  It worked and saved me time to
zero the whole arena file.
--

Re: [9fans] Driver for SAN adapter

[Matthias Teege]

> btw, you might be able to use a large unix file on
> the IBM ESS mounted via u9fs for a venti arena.

good idea. I'll try it.
Matthias

Re: [9fans] Driver for SAN adapter

[YAMANASHI Takeshi]

> I have access to a 5TB IBM ESS which maybe a cool
> Venti server.

How much disk storage venti can manage?
I'm speaking on my vague memory, but it couldn't do
fmtarena larger than 1TB.

btw, you might be able to use a large unix file on
the IBM ESS mounted via u9fs for a venti arena.
--

[9fans] Driver for SAN adapter

[Matthias Teege]

Moin,

does anybody have a working Plan 9 driver for a SAN hostadapter
(IBM ESS)? I have access to a 5TB IBM ESS which maybe a cool
Venti server.

Matthias