linux-ext4 - Re: e2scrub finds corruption immediately after mounting

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Message-ID: <41b3d30367b59f6dfd96181e3b3052720127b98f.camel@interlinx.bc.ca>
Date: Tue, 16 Jan 2024 08:22:07 -0500
From: "Brian J. Murrell" <brian@...erlinx.bc.ca>
To: linux-ext4@...r.kernel.org
Subject: Re: e2scrub finds corruption immediately after mounting

On Wed, 2024-01-10 at 10:06 -0800, Darrick J. Wong wrote:
> 
> Huh.  Do you remember the exact command that was used to format this
> filesystem?

I do not.  It was created quite a while ago.

> "mke2fs" still formats ext2 filesystems unless you pass
> -T ext4 or call its cousin mkfs.ext4.

I wonder if that's what I did perhaps.

> Nope.  ext4 is really just ext2 plus a bunch of new features
> (journal,
> extents, uninit_bg, dir_index).

Yes, that's completely understood.  I would have thought it an
interesting "safety" measure to flag that when a user requests an ext4
mount and the file system is actually only ext2 that a refusal to mount
would indicate to the user that their ext* file system does not have
the required features to be called ext4.

Cheers,
b.

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