[PATCH RFC] xfs: set block device logical sector size on xfs_buftarg

[Christoph Hellwig]

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.