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Re: limitation of inode count on x86 (32b)

To: Phy Prabab <phyprabab@xxxxxxxxx>
Subject: Re: limitation of inode count on x86 (32b)
From: Nathan Scott <nathans@xxxxxxx>
Date: Mon, 24 May 2004 11:17:38 +1000
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: <20040523225013.51141.qmail@xxxxxxxxxxxxxxxxxxxxxxxxxxx>; from phyprabab@xxxxxxxxx on Sun, May 23, 2004 at 03:50:13PM -0700
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On Sun, May 23, 2004 at 03:50:13PM -0700, Phy Prabab wrote:
> Sirs,
> 
> Do I understand correctly that XFS on x86 is limited
> to 2^32 inodes?  I am looking at making a fairly large
> XFS file server where there will probably be millions
> up millions of sym-links.  Want to make sure I
> properly size the server.
> 
> Thank you for your time.

All Linux filesystems are "limited" that way.  The size of the
inode number in the VFS is 32 bits on i386.  See __kernel_ino_t,
ino_t, and all the places where "unsigned long" is used directly,
eg. the "struct inode" i_ino definition in linux/fs.h.

cheers.

-- 
Nathan


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