Re: internal write-intent bitmap, chunksize, superblock

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On Sun, May 24, 2009 12:34 am, Redeeman wrote:
> Hello.
>
> I have just created a raid6 array with 8 1tb drives, and it uses the
> default metadata 0.9.
>
> I have been reading up on write intent bitmaps, and i wish to create an
> internal one. I read about different chunk sizes yielding different
> performance costs, but one thing i wonder is, how much space is reserved
> in the superblock for the bitmap? and what happens if i try to create a
> bitmap which would take more than the reserved space?

60K.
It won't let you.


NeilBrown

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