linux-ext4 - Re: ext4: odd values for mkfs.ext4 -i

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Message-id: <20090304001100.GV3199@webber.adilger.int>
Date:	Tue, 03 Mar 2009 17:11:00 -0700
From:	Andreas Dilger <adilger@....com>
To:	Jan Engelhardt <jengelh@...ozas.de>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: ext4: odd values for mkfs.ext4 -i

On Mar 04, 2009  00:07 +0100, Jan Engelhardt wrote:
> Is it ok that e2fsprogs-1.41.4 allows odd values for -i, such as
> in `mkfs.ext4 -i 2047`? If inodes were arranged every 2047 bytes, they 
> would not be aligned, which would mean one extra sector would have to be 
> read every now and then, does not it?  Should odd values be rejected?

Note that the "-i" value is a ratio between the total space in the filesystem
and the number of inodes.  It does not dictate how those inodes are layed
out on disk.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.

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