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Re: maximum files

To: Ragnar Kjørstad <xfs@xxxxxxxxxxxxxxxxxxx>
Subject: Re: maximum files
From: Steve Lord <lord@xxxxxxx>
Date: 25 Apr 2002 08:48:40 -0500
Cc: ASANO Masahiro <masano@xxxxxxxxxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to: <20020425154607.B28067@xxxxxxxxxxx>
References: <20020424160854G.masano@xxxxxxxxxxxxxx> <1019658798.27989.29.camel@xxxxxxxxxxxxxxxxxxxx> <20020425190934G.masano@xxxxxxxxxxxxxx> <1019741548.8309.3.camel@xxxxxxxxxxxxxxxxxxxx> <20020425154607.B28067@xxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
On Thu, 2002-04-25 at 08:46, Ragnar Kjørstad wrote:
> On Thu, Apr 25, 2002 at 08:32:28AM -0500, Steve Lord wrote:
> > > Great!
> > > How about 64bit linux? (e.g. XFS for IA-64 linux)
> > 
> > Well, so far that does not help much, it all depends on what the sizes
> > of the basic types generated by gcc are on those platforms, I do not 
> > have a list for all platforms, but so far as I know, ia64 for example
> > is still stuck with 32 bit inodes and 2Tbyte block devices. However,
> > a patch was just floated on the ia64 list to do 64 bit device access
> > and other components of that work have appeared in the past.
> 
> Ben LaHaise wrote patches to support >2TB devices. It should work on
> both i386 and ia64 (and other platforms), but will ofcourse be faster on
> 64 bit platforms. 
> 
> I don't know if it has been included in 2.5 yet, or of it will be, but
> the patch is out there.


It has not been, I think the issue was it made some basic types 64 bit
across the board - which negatively impacts the 32 bit kernels. That's
just from memory.

The patch on the ia64 list was a lot more comprehensive, everything from
the page cache, through fiber channel drivers to the partition table
code was affected. It almost looks as if someone has tried it with real
disk space in this case. It might have the same 64 bit on 32 bit issues
though - but it should be possible to make it configurable.

Here is a link:

https://external-lists.vasoftware.com/archives//linux-ia64/2002-April/003416.html

Steve
> 
> 
> 
> -- 
> Ragnar Kjørstad
> Big Storage
-- 

Steve Lord                                      voice: +1-651-683-3511
Principal Engineer, Filesystem Software         email: lord@xxxxxxx


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