Subject: Re: Log area on-disk for the journal
To: Pavel Cahyna <email@example.com>
From: Jason Thorpe <firstname.lastname@example.org>
Date: 10/23/2006 20:13:11
On Oct 23, 2006, at 2:28 PM, Pavel Cahyna wrote:
> ext3 does not have this problem. Old tools know if the journal is
> refuse to work if it, and work correctly if it is clean.
That's because the "old tools" are actually new tools -- they know
about the journal.
> Maybe FFS could imitate this by writing an incompatible magic number
> to the
> superblock if journalling is in action, and when the filesystem is
> unmounted, replace it with the old magic number.
...of course the superblock update has to be journaled... :-)