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From: Vladislav Bolkhovitin <vst-d+Crzxg7Rs0@public.gmane.org>
To: Chris Worley <worleys-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: scst-devel
	<scst-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>,
	OFED mailing list
	<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: How do I get scst_vdisk/IB_SRP(T) to properly handle drives w/ 4KB sectors?
Date: Wed, 23 Jun 2010 21:08:51 +0400	[thread overview]
Message-ID: <4C223FA3.3090300@vlnb.net> (raw)
In-Reply-To: <AANLkTin2bONNlTF8mseOt3-pPcFF523-6EWHFD2XBOPg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

Chris Worley, on 06/22/2010 08:06 PM wrote:
> When given an LBA w/ a bad boundary, the drive returns an error and
> the target side says:
> 
> dev_vdisk: ***ERROR***: cmd ffff810196f58b70 returned error -22
> 
> ... and the initiator:
> 
> sd 8:0:0:0: SCSI error: return code = 0x08000002
> sdc: Current: sense key: Medium Error
>     Add. Sense: Unrecovered read error
> 
> Is there a way to tell scst that this drive requires 4KB block sizes,
> and pass that upstream?

I'm not sure what you mean here under "tell" and "pass upstream". 
Generally, such problems are outside of SCST scope and responsibilities. 
With vdisk kernel I/O stack should make sure you use correct alignment 
accessing your backend drive and you can always choose your own >512b 
block size for all vdisk devices.

Vlad
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  parent reply	other threads:[~2010-06-23 17:08 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-22 16:06 How do I get scst_vdisk/IB_SRP(T) to properly handle drives w/ 4KB sectors? Chris Worley
     [not found] ` <AANLkTin2bONNlTF8mseOt3-pPcFF523-6EWHFD2XBOPg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-06-23 17:08   ` Vladislav Bolkhovitin [this message]
     [not found]     ` <4C223FA3.3090300-d+Crzxg7Rs0@public.gmane.org>
2010-06-23 17:32       ` Chris Worley

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