svn commit: r216230 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs

[Andriy Gapon]

on 07/12/2010 13:51 Bruce Cran said the following:
> On Tue, Dec 07, 2010 at 01:31:27PM +0200, Alexander Motin wrote:
>> Not necessary. Some places indeed may have some legacy requirements,
>> for example, in theory MBR want partition to be aligned to "track
>> boundary" (but I've seen many pre-formatted SD cards with MBR
>> violating it to align partition to flash sector). Same time for BSD
>> label I see no problem to align partitions any way we want. I also
>> see no problems to make FAT cluster, UFS block/fragment, etc, to
>> match some sizes.
> 
>>From a new installation of Windows 7 and FreeBSD CURRENT:
> 
> GEOM: ada0: partition 3 does not start on a track boundary.
> GEOM: ada0: partition 3 does not end on a track boundary.
> GEOM: ada0: partition 2 does not start on a track boundary.
> GEOM: ada0: partition 2 does not end on a track bounary.
> 
> Partition 2 is the reserved partition while 3 is an NTFS partition, both
> created in the Windows setup application.
> 
> Since Windows isn't bothering to align partitions do we still need to
> warn about it?
> 

No.
And another reason is that modern drives do not actually report any CHS
parameters, so I don't even know where we get them and how we (pretend to) know
we track boundaries are.

-- 
Andriy Gapon