GJournal (hopefully) final patches.
Pawel Jakub Dawidek
pjd at FreeBSD.org
Fri Aug 11 14:00:24 UTC 2006
On Fri, Aug 11, 2006 at 03:54:26PM +0200, Thomas Quinot wrote:
> * Pawel Jakub Dawidek, 2006-08-10 :
> > I also added a flag for gmirror and graid3 which says "don't
> > resynchronize components after a power failure - trust they are
> > consistent". And they are always consistent when placed below gjournal.
> That sounds a bit suprising; how does gjournal guarantee that a given
> write has been committed to the two providers of a mirror?
If the given write wasn't committed to all mirror components this
bascially means, that we had a power failure and gjournal will not be
clean, so it will be replayed or forgotten, leaving the data on mirror
in a consistent state.
Pawel Jakub Dawidek http://www.wheel.pl
pjd at FreeBSD.org http://www.FreeBSD.org
FreeBSD committer Am I Evil? Yes, I Am!
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