linux-kernel - EXT4: new warnings from 4.3.0-rc2

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Date:	Mon, 21 Sep 2015 09:59:37 +0100
From:	Chris Clayton <chris2553@...glemail.com>
To:	LKML <linux-kernel@...r.kernel.org>
Subject: EXT4: new warnings from 4.3.0-rc2

Hi,

I've just built and booted 4.3.0-rc2 and I'm seeing the following new messages on the console during boot up:

[    2.481399] EXT4-fs (sda2): couldn't mount as ext3 due to feature incompatibilities
[    2.482426] EXT4-fs (sda2): couldn't mount as ext2 due to feature incompatibilities

They are immediately followed by:

[    2.507948] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
[    3.549523] EXT4-fs (sda2): re-mounted. Opts: (null)

and they are the messages I normally see (from 4.2.0 and earlier).

sda2 is my root partition and is mounted OK, so my system is operating as before, but I thought you would want a heads
up about these (slightly alarming) new console messages.

The output from dmesg is attached, in case it helps.

Chris

View attachment "dmesg-warnings.txt" of type "text/plain" (50406 bytes)