quota deadlock on 6.1-RC1

Kris Kennaway kris at obsecurity.org
Thu May 4 04:48:01 UTC 2006

On Thu, May 04, 2006 at 12:41:57AM -0400, Mike Jakubik wrote:
> Kris Kennaway wrote:
> >On Wed, May 03, 2006 at 08:11:32PM -0700, David Kirchner wrote:
> >  
> >>On 5/3/06, Mark Linimon <linimon at lonesome.com> wrote:
> >>    
> >>>To summarize: at some point you do, indeed, have to ship something.  You
> >>>have to choose a point where the least number of users will see 
> >>>regressions
> >>>vs. the most number of users will see improvements.  (Not everyone uses
> >>>quotas.)
> >>>      
> >>FWIW, the snapshot bugs, particularly those seen during background
> >>fscks, can affect every installation, although you're unlikely to see
> >>them unless your server panics or loses power (or in some way requires
> >>a fsck on boot).
> >>    
> >
> >You missed the part where snapshots have caused deadlocks under
> >varying conditions since day 1.  They have never worked 100% reliably,
> >and despite our best efforts that will remain true with 6.1.
> >
> >Kris
> >  
> Then why utilize a known non-functional technology?

Because again, the benefits have been judged by the decision-makers
and found to outweigh the drawbacks.  Perhaps that's just a difficult
concept for some people to understand if they're used to thinking of
everything in binary terms.


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