linux-kernel - Re: [PATCH V3 1/7] Drivers: scsi: storvsc: Change the limits to reflect the values on the host

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 14 Jul 2014 10:57:53 +0200
From:	Hannes Reinecke <hare@...e.de>
To:	Christoph Hellwig <hch@...radead.org>
CC:	"K. Y. Srinivasan" <kys@...rosoft.com>, jasowang@...hat.com,
	apw@...onical.com, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, ohering@...e.com,
	jbottomley@...allels.com, linux-scsi@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH V3 1/7] Drivers: scsi: storvsc: Change the limits to reflect
 the values on the host

On 07/14/2014 10:30 AM, Christoph Hellwig wrote:
> On Mon, Jul 14, 2014 at 08:15:17AM +0200, Hannes Reinecke wrote:
>> Limiting max_lun to 255 will make the driver to _not_ respond to LUNs higher
>> than that; ie Well-known LUN won't work here.
>> Also the SCSI stack will be using REPORT LUNS anyway since you're
>> advertising SPC-2 compliance. So your driver runs into issues if Hyper-V
>> would ever return more than 256 LUNs with the REPORT LUN command or if any
>> of the LUNs has an addressing scheme other than
>> '0x00'.
>> I would suggest to raise this to the technical limit (ie the largest LUN
>> which the _protocol_ supports) and let REPORT LUNS deal with the actual
>> LUNs.
>
> I suspect hypverv doesn't support anything more.  For now I'd be
> inclined to just put it in ASAP and if your suggestion works out fix it
> up later, although I'll wait a bit for more review feedback.
>
Okay, that's fine by me.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      zSeries & Storage
hare@...e.de			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/