From: Hannes Reinecke <hare@suse.de>
To: Chris Boot <bootc@bootc.net>, Nic Bellinger <nab@daterainc.com>
Cc: target-devel@vger.kernel.org, linux-scsi@vger.kernel.org,
Christoph Hellwig <hch@lst.de>, Ewan Milne <emilne@redhat.com>
Subject: Re: [PATCH 7/8] target_core_alua: disallow READ_CAPACITY when in standby
Date: Thu, 18 Jun 2015 16:32:54 +0200 [thread overview]
Message-ID: <5582D696.4010507@suse.de> (raw)
In-Reply-To: <5582AE3D.3010006@bootc.net>
On 06/18/2015 01:40 PM, Chris Boot wrote:
> On 18/06/15 10:43, Hannes Reinecke wrote:
>> Strictly speaking SPC doesn't require READ CAPACITY and friends
>> to be supported while in the port is in standby.
>
> Hi Hannes,
>
> I'd really rather this didn't go away. Yes, strictly speaking SPC
> doesn't require these commands but Linux in practice does, and ISTR this
> was added at my request too.
>
> We need it on our storage setups to prevent the Linux SCSI stack from
> exploding. If this is removed here, they'll start exploding again until
> the fix goes in and the initiators are updated.
>
This was exactly why I added it, so that one could go about and fix
the linux SCSI stack :-)
> Could this please be kept as an option or something?
>
Yeah, I see what I can do.
Cheers,
Hannes
--
Dr. Hannes Reinecke zSeries & Storage
hare@suse.de +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)
next prev parent reply other threads:[~2015-06-18 14:32 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-18 9:43 [PATCH 0/8] tcm_loop updates Hannes Reinecke
2015-06-18 9:43 ` [PATCH 1/8] tcm_loop: Hook into SAS transport class Hannes Reinecke
2015-06-18 9:43 ` [PATCH 2/8] tcm_loop: Add SAS transport topology Hannes Reinecke
2015-06-18 9:43 ` [PATCH 3/8] tcm_loop: Remove SAS vestigies Hannes Reinecke
2015-06-18 9:43 ` [PATCH 4/8] tcm_loop: Send I_T_NEXUS_LOSS_OCCURRED UA Hannes Reinecke
2015-06-18 9:43 ` [PATCH 5/8] tcm_loop: Rescan SCSI target on transport online Hannes Reinecke
2015-06-18 9:43 ` [PATCH 6/8] target: Issue Power-On/Reset UA upon LUN instantiation Hannes Reinecke
2015-06-18 9:43 ` [PATCH 7/8] target_core_alua: disallow READ_CAPACITY when in standby Hannes Reinecke
2015-06-18 11:40 ` Chris Boot
2015-06-18 14:32 ` Hannes Reinecke [this message]
2015-06-19 6:49 ` Christoph Hellwig
2015-06-19 7:07 ` Hannes Reinecke
2015-06-18 9:43 ` [PATCH 8/8] target: display 'write_protect' attribute for demo-mode LUNs Hannes Reinecke
2015-06-19 6:51 ` Christoph Hellwig
2015-06-19 7:05 ` Hannes Reinecke
2015-06-19 6:48 ` [PATCH 0/8] tcm_loop updates Christoph Hellwig
2015-06-19 7:13 ` Hannes Reinecke
2015-06-23 8:29 ` Nicholas A. Bellinger
2015-06-23 9:05 ` Hannes Reinecke
2015-07-07 0:25 ` Nicholas A. Bellinger
2015-07-07 5:50 ` Hannes Reinecke
2015-07-07 6:26 ` Nicholas A. Bellinger
2015-07-07 6:29 ` Hannes Reinecke
2015-07-07 6:42 ` Nicholas A. Bellinger
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