linux-ext4 - Re: df returns incorrect size of partition due to huge overhead block count in ext4 partition

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Message-ID: <YlmD/605jgGpxA6K@mit.edu>
Date:   Fri, 15 Apr 2022 10:41:03 -0400
From:   "Theodore Ts'o" <tytso@....edu>
To:     Fariya F <fariya.fatima03@...il.com>
Cc:     linux-ext4@...r.kernel.org
Subject: Re: df returns incorrect size of partition due to huge overhead
 block count in ext4 partition

On Tue, Apr 12, 2022 at 02:26:01PM +0530, Fariya F wrote:
> The e2fsprogs version is 1.42.99. The exact version of df utility when
> I query is 8.25.
> The Linux kernel is 4.9.31. Please note the e2fsprogs ipk file was
> available as part of Arago distribution for the ARM processor I use.
> 
> From your email I understand that below are the options as of now:
> a) Fix in the fsck tool and kernel fix: This is something I am looking
> forward to. Could you please help prioritize it?

Note that the patches that I just posted are against the upstream
kernel, and the 4.9 kernel is quite ancient.  In particular the last
patch in the series, "ext4: update the cached overhead value in the
superblock" is almost certainly guaranteed not to apply to 4.9.31.

Cheers,

					- Ted