Date: Tue, 07 Dec 2010 13:57:04 +0200 From: Andriy Gapon <avg@freebsd.org> To: Bruce Cran <bruce@cran.org.uk> Cc: src-committers@freebsd.org, Pawel Jakub Dawidek <pjd@freebsd.org>, John Baldwin <jhb@freebsd.org>, svn-src-all@freebsd.org, Ivan Voras <ivoras@freebsd.org>, svn-src-head@freebsd.org, Alexander Motin <mav@freebsd.org> Subject: Re: svn commit: r216230 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <4CFE2110.8020108@freebsd.org> In-Reply-To: <20101207115106.GB68479@muon.cran.org.uk> References: <201012061218.oB6CI3oW032770@svn.freebsd.org> <AANLkTine9rGq_cM4ruFXYq=-F7cMXcQAr-zKHuWoQs2z@mail.gmail.com> <20101206195327.GD1936@garage.freebsd.pl> <201012061518.49835.jhb@freebsd.org> <4CFD514E.8010103@FreeBSD.org> <20101207095137.GC1700@garage.freebsd.pl> <4CFE0B9E.3060808@FreeBSD.org> <20101207110410.GE1700@garage.freebsd.pl> <4CFE1B0F.90908@FreeBSD.org> <20101207115106.GB68479@muon.cran.org.uk>
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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
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