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From: Ric Wheeler <rwheeler@redhat.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: Eric Sandeen <sandeen@sandeen.net>, xfs-oss <xfs@oss.sgi.com>,
	Eric Sandeen <sandeen@redhat.com>
Subject: Re: [PATCH RFC] xfs: set block device logical sector size on xfs_buftarg
Date: Fri, 22 Nov 2013 09:26:43 -0500	[thread overview]
Message-ID: <528F69A3.7060608@redhat.com> (raw)
In-Reply-To: <20131122142022.GC14680@infradead.org>

On 11/22/2013 09:20 AM, Christoph Hellwig wrote:
> On Fri, Nov 22, 2013 at 09:13:56AM -0500, Ric Wheeler wrote:
>> I think you do that by using SCSI debug to get a 4K sector drive -
>> that is how we tested for RHEL6 for example.  Layering on
>> restrictions to hardware in the file system seems a bit harsh.
>>
>> The QEMU crowd will be working to get better support for 4K drives
>> in the future, but I think that we are effectively going to cause a
>> huge field issue here since these 512/4K drives are extremely
>> common..
>>
>> Given the SCSI debug method for this, does that mean you retract
>> your objections and will support Eric's patch :) ?
> We actually have a test for 4k drives using scsi_debug in xfstests: xfs/279.
>

Just to add on here. we are going to work more closely with the kvm/qemu people 
to make sure that they properly take care of the hints about alignment and so on 
(thanks to you for putting that in!).

Ric

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  reply	other threads:[~2013-11-22 14:27 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-11-13 18:25 [PATCH RFC] xfs: set block device logical sector size on xfs_buftarg Eric Sandeen
2013-11-13 18:56 ` Christoph Hellwig
2013-11-13 19:08   ` Eric Sandeen
2013-11-13 21:26     ` Dave Chinner
2013-11-13 21:32       ` Eric Sandeen
2013-11-13 22:10         ` Dave Chinner
2013-11-13 22:18           ` Eric Sandeen
2013-11-14  0:34             ` Dave Chinner
2013-11-14 13:37       ` Christoph Hellwig
2013-11-14 14:56         ` Eric Sandeen
2013-11-14 21:01           ` Dave Chinner
2013-11-22 14:13             ` Ric Wheeler
2013-11-22 14:20               ` Christoph Hellwig
2013-11-22 14:26                 ` Ric Wheeler [this message]
2013-11-22 14:57               ` Eric Sandeen
2013-11-14  0:35 ` Eric Sandeen
2013-11-14  6:49   ` Dave Chinner
2013-11-14 13:09     ` Ric Wheeler
2013-11-14 15:03       ` Eric Sandeen
2013-11-14 15:18     ` Eric Sandeen

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