Re: snap_trimming + backfilling is inefficient with many purged_snaps

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On Sat, 20 Sep 2014, Alphe Salas wrote:
> Real field testings and proof workout are better than any unit testing ... I
> would follow Dan s notice of resolution because it based on real problem and
> not fony style test ground.

It's been reviewed and look right, but the rados torture tests are 
pretty ... torturous, and this code is delicate.  I would still wait.

> Sage apart that problem is there a solution to the ever expending replicas
> problem ?

Discard for the kernel RBD client should go upstream this cycle.

As for RADOS consuming more data when RBD blocks are overwritten, I still 
have yet to see any actual evidence of this, and have a hard time seeing 
how it could happen.  A sequence of steps to reproduce would be the next 
step.

sage
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