On Fri, Mar 10, 2006 at 08:40:47AM -0800, Badari Pulavarty wrote:
> > > > I don't know how much usage it's had, sorry. It's only allowed in
> > > > data=writeback mode and not many people seem to use even that.
> > >
> > > would you be prepared to turn it on by default in -mm for a bit to see
> > > how it holds up? The concept seems valuable in itself, so much so that I
> > > feel this should be 1) on always by default when possible and 2) isn't
> > > really the kind of thing that should be a long term option; not having
> > > it almost is a -o pleaseAddThisBug option for each bug fixed.
> >
> > It'd be good to get that hammered on, as it doesn't see hardly any testing
> > based upon the experiments I did sometime last year. It left me with
> > an unmountable root filesystem :-/
>
> Yuck. You are talking about "nobh" option for writeback mode, correct ?
> Have any idea on what you were doing ?
Actually, I think I may have neglected to make those mounts writeback.
In retrospect, it was silly, I basically forced nobh on for all mounts.
A few boots later my / reached its maximum mount count, and got a fsck,
which moved a bunch of useful things like /lib/ld-linux.so.2 to lost+found.
There was so much mess that it was easier to reinstall the box than
to pick through it. (Thankfully I tested it on a scratch box ;-)
Dave
--
http://www.codemonkey.org.uk
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