On Dec 13, 2007  09:51 -0600, Jose R. Santos wrote:
> Now, storing the bits only guaranties that the flexbg size is always a
> power-of-two and does not guarantee that the super block flexbg size
> represents the actual meta-data grouping on disk.  For this we need to
> verify that the bitmap offsets match what the super block reports.  It
> may be an unlikely scenario, but it may be worth it to check this as
> well at mount time.

I'm not sure what you mean...  Isn't the flexbg size just a count of
the number of block groups?  If it is always a power of two, and the
groups per metabg is always a power of two (it is) then they will
always be even multiples.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.

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