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Re: filesize limit "rolls over" to 0 kbytes at 4 GB

To: Jonathan Dill <dill@xxxxxxxxxxxx>
Subject: Re: filesize limit "rolls over" to 0 kbytes at 4 GB
From: Steve Lord <lord@xxxxxxx>
Date: 31 Oct 2001 13:59:17 -0600
Cc: Todd Raeker <raeker@xxxxxxxxx>, Linux XFS Mailing List <linux-xfs@xxxxxxxxxxx>
In-reply-to: <3BE05612.5BD3FFA4@xxxxxxxxxxxx>
References: <01102909435902.11332@chemraeker1> <3BDD8E31.9C817A5@xxxxxxxxxxxx> <01103113542200.01720@chemraeker1> <3BE05612.5BD3FFA4@xxxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
On Wed, 2001-10-31 at 13:50, Jonathan Dill wrote:

> 
> If you keep increasing the limit, you get a modulus of 4 GB eg. 5 GB
> gives you a limit of 1 GB, 37 GB gives you a limit of 1 GB etc.
> 
> Anybody have any ideas about this?
> 
> -- 
> "Jonathan F. Dill" (dill@xxxxxxxxxxxx)

I do know that if you use the limits interface then there is only 4
bytes of space in the kernel to store limits. Which means you cannot
impose a limit of greater than 4G bytes. The rollover you are seeing
is probably because of this. Setting a limit to RLIM_INFINITY which
is 0xffffffff on i386 effectively disables the limit checking and this
is the only way to get into higher order files.

Steve

-- 

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


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