DragonFly bugs List (threaded) for 2008-07
DragonFly BSD
DragonFly bugs List (threaded) for 2008-07
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Re: hammer_alloc_data panic


From: corecode@xxxxxxxxxxxx
Date: Wed, 16 Jul 2008 18:55:44 +0200 (CEST)

On Wed, July 16, 2008 18:25, Matthew Dillon wrote:
> But the reblocking doesn't scan by block, it scans the B-Tree.  So,
> due to fragmentation, reblocking by scanning the B-Tree might free up
> *some* of the space in each of those 16 blocks while filling up a new
> block, but the new block may become completely full before any one of those
> 16 blocks becomes completely empty.  So another new block needs
> to be allocated.

Oh I see, that's in clear contrast to LFS.  Is it possible to find all
b-tree elements (or rather, their parents) when looking at one block?

cheers
  simon





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