Xfs_repair and journalling -- EXT4 journal replay discussion

[Dave Chinner]

On Sat, Mar 30, 2013 at 01:52:17PM -0500, Stan Hoeppner wrote:
> On 3/30/2013 12:40 PM, Eric Sandeen wrote:
> > On 3/30/13 7:49 AM, Stan Hoeppner wrote:
> 
> >> Ok, so here's the skinny on the source of our confusion WRT how/when
> >> EXT4 replays journals, and it's rather interesting.  Ted Ts'o explained
> >> the following.
> > 
> > Where was this, out of curiosity?
> 
> Private email exchange with Ted.  I thought it was best from an
> etiquette standpoint not to wholesale paste his two private emails to
> the XFS list, but to summarize.  Maybe it would be ok if I put it on my
> web server for a couple of days then remove it.
> 
> http://www.hardwarefreak.com/ext4-journaling.txt

That again?  I'll just point to this post from Ted in 2004:

http://zork.net/~nick/mail/why-reiserfs-is-teh-sukc

It's the same FUD about XFS journalling and power failures that Ted
has been claiming for the past 10+ years. It's been rebutted so many
times I can now do it in three words: volatile drive caches.

Cheers,

Dave.
-- 
Dave Chinner
david at fromorbit.com