linux-ext4 - Re: [PATCH 3/3] e2fsck: allow extent tree optimization to be disabled

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Date:   Mon, 17 Apr 2017 01:45:05 -0400
From:   Theodore Ts'o <tytso@....edu>
To:     "Darrick J. Wong" <darrick.wong@...cle.com>
Cc:     Ext4 Developers List <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH 3/3] e2fsck: allow extent tree optimization to be disabled

On Sun, Apr 16, 2017 at 12:24:30PM -0700, Darrick J. Wong wrote:
> 
> /me wonders if there's a way to detect that we're being run by
> initscripts/systemd/whatever on a device that is mounted ro, and skip
> the optimization step to avoid the reboot.

That wasn't actually the reason for this option; but adding feature
where which does this for the root file system mounted read-only, the
optimization is avoided would make sense, yes.

> OTOH I wonder why the initramfs (if available) doesn't just build in
> e2fsck and fsck the root device before mounting the fs...

Debian does this already.  RHEL is just behind the times.  :-)

       	    	 	   	   	- Ted