Re: advanced partition format, mdadm, and raw disks

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On Tue, 05 Jul 2011 05:28:50 +0100 "Tyler J. Wagner" <tyler@xxxxxxxxxxx>
wrote:

> On Tue, 2011-07-05 at 10:30 +1000, NeilBrown wrote:
> > No "super" is mentioned here so it must be using 0.90 metadata.
> 
> Ah. Damn that old Debian package.
> 
> I'm concerned that this means the filesystem isn't aligned to the 4K
> sector, and is therefore less efficient. Is 0.90 metadata at the
> beginning or end of the disk? Is it a multiple of 4K in size?
> 

0.90 has data at the start and metadata at the end on a 64k aligned boundary.
So if the partition is 4K aligned, everything else will be too.

NeilBrown

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