From: Christoph Hellwig <hch@infradead.org>
To: Michael Monnerie <michael.monnerie@is.it-management.at>
Cc: xfs@oss.sgi.com
Subject: Re: 4k sector drives
Date: Fri, 23 Jul 2010 05:58:32 -0400 [thread overview]
Message-ID: <20100723095832.GA23174@infradead.org> (raw)
In-Reply-To: <201007230809.28111@zmi.at>
On Fri, Jul 23, 2010 at 08:09:27AM +0200, Michael Monnerie wrote:
> On Mittwoch, 21. Juli 2010 Khelben Blackstaff wrote:
> > Nevertheless, you don't have to get them to report 4k to linux. As
> > long as you align the partitions its fine. As i said in the other
> > post, newer fdisk doesn't use "DOS compatibility mode" and uses
> > sectors by default (instead of stupid CHS) with a 1MB alignment, so
> > every partition will be properly aligned. If you don't dual boot
> > Windows, you can also use GPT partitioning scheme. Also, from what i
> > have seen, xfsprogs are quite clever and find most stuff on their
> > own. I usually mkfs with "-s size=4096" just to be sure.
>
> I always do -b size=4096 anyway, so I'm fine here. And I created the
> partitions starting sector 512, so that should be good also.
-b size=4096 is the default anyway, for 4k sector drivers you also want
-s size=4096, which you do not want for 512 byte sector disks.
What values do the files
/sys/block/<device>/queue/logical_block_size
/sys/block/<device>/queue/physical_block_size
/sys/block/<device>/alignment_offset
say about your disk?
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
next prev parent reply other threads:[~2010-07-23 9:55 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-21 10:33 4k sector drives Khelben Blackstaff
2010-07-21 12:21 ` Michael Monnerie
2010-07-23 6:09 ` Michael Monnerie
2010-07-23 9:58 ` Christoph Hellwig [this message]
2010-07-23 10:42 ` Stan Hoeppner
2010-07-23 10:47 ` Christoph Hellwig
2010-07-23 12:41 ` Stan Hoeppner
2010-07-23 10:59 ` Michael Monnerie
2010-07-23 12:56 ` Emmanuel Florac
2010-07-23 13:10 ` Stan Hoeppner
2010-07-23 13:38 ` Matthias Schniedermeyer
2010-07-23 13:50 ` Emmanuel Florac
2010-07-23 14:13 ` Matthias Schniedermeyer
2010-07-24 8:47 ` Christoph Hellwig
2010-07-24 21:07 ` Eric Sandeen
2010-07-24 22:35 ` Michael Monnerie
2010-07-25 15:33 ` Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2010-07-23 15:02 Khelben Blackstaff
2010-07-23 15:28 ` Emmanuel Florac
2010-07-23 9:19 Khelben Blackstaff
2010-07-21 7:53 Khelben Blackstaff
2010-07-21 9:14 ` Michael Monnerie
2010-07-21 10:33 ` Emmanuel Florac
2010-07-20 18:58 Michael Monnerie
2010-07-20 20:30 ` Stan Hoeppner
2010-07-20 20:39 ` Emmanuel Florac
2010-07-20 21:34 ` Michael Monnerie
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20100723095832.GA23174@infradead.org \
--to=hch@infradead.org \
--cc=michael.monnerie@is.it-management.at \
--cc=xfs@oss.sgi.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.