From: NeilBrown <neilb@suse.de>
To: "Tyler J. Wagner" <tyler@tolaris.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: advanced partition format, mdadm, and raw disks
Date: Tue, 5 Jul 2011 14:56:41 +1000 [thread overview]
Message-ID: <20110705145641.3f8eb3db@notabene.brown> (raw)
In-Reply-To: <1309840130.2865.5.camel@baal>
On Tue, 05 Jul 2011 05:28:50 +0100 "Tyler J. Wagner" <tyler@tolaris.com>
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
next prev parent reply other threads:[~2011-07-05 4:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-04 16:15 advanced partition format, mdadm, and raw disks Tyler J. Wagner
2011-07-05 0:30 ` NeilBrown
2011-07-05 4:28 ` Tyler J. Wagner
2011-07-05 4:56 ` NeilBrown [this message]
2011-07-05 5:24 ` Tyler J. Wagner
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