Re: mount -o remount problems with ext3 and journal= options in /etc/fstab

[Theodore Tso <tytso-3s7WtUTddSA@public.gmane.org>]

On Fri, Nov 28, 2008 at 05:03:10PM -0500, Mike Frysinger wrote:
> well, i guess the first question to ask is, does it make sense to have these 
> journal options in /etc/fstab ?

No, not really.  The original intent for journal=update was to update
from a V1 journal superblock to the V2 journal superblock.  This
transition happened in around 2001.  It was intended to be used to ask
the kernel to do a one-time conversion of the superblock version.
There's no real reason to have this in the kernel; it's the sort of
thing that is much better done in the userspace tools anyway. p

We should probably remove it from the kernel, actually.  There might
be some really ancient 2.4 systems that still have journals with V1
superblocks, but they are few and far between.

In any case, if this was going to be in the kernel, it makes
absolutely zero sense for it to be in /etc/fstab.  It should only be
something that the user manually specifies when first mounting the
filesystem, and for that reason it's actually better done in a
userspace tool.

						- Ted
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