From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Eric Sandeen <sandeen@sandeen.net>
Cc: xfs@oss.sgi.com
Subject: Re: What are the correct mkfs.xfs parameters for a lying WD-EARS HDD?
Date: Mon, 08 Mar 2010 18:55:55 -0500 [thread overview]
Message-ID: <yq1vdd68j1w.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <4B957E03.9090000@sandeen.net> (Eric Sandeen's message of "Mon, 08 Mar 2010 16:45:23 -0600")
>>>>> "Eric" == Eric Sandeen <sandeen@sandeen.net> writes:
Eric> Make sure your partitions, if any, are on 4k boundaries.(*) older
Eric> fdisk at least won't do this by default, not sure about parted.
You can use the expert mode in fdisk to ensure that the partition begins
on a 4KB boundary.
Eric> (*)unless the drive has an offset to make 512-sector 63 line up on
Eric> a nice boundary... in which case I guess you could experiment with
Eric> perf both ways to be sure...
EARS is the one that's lying about the physical block size. It's
zero-aligned unless somebody messed with the jumper.
--
Martin K. Petersen Oracle Linux Engineering
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next prev parent reply other threads:[~2010-03-08 23:54 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-08 22:10 What are the correct mkfs.xfs parameters for a lying WD-EARS HDD? Matthias Schniedermeyer
2010-03-08 22:45 ` Eric Sandeen
2010-03-08 23:47 ` Matthias Schniedermeyer
2010-03-09 21:41 ` Matthias Schniedermeyer
2010-03-10 8:26 ` Gim Leong Chin
2010-03-08 23:55 ` Martin K. Petersen [this message]
2010-03-09 0:55 ` Eric Sandeen
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