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From: "Rustad, Mark D" <mark.d.rustad@intel.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>,
	Anthony Liguori <aliguori@us.ibm.com>,
	kvm-devel <kvm@vger.kernel.org>,
	linux-scsi <linux-scsi@vger.kernel.org>,
	lf-virt <virtualization@lists.linux-foundation.org>,
	Christoph Hellwig <hch@infradead.org>,
	Anthony Liguori <aliguori@linux.vnet.ibm.com>,
	target-devel <target-devel@vger.kernel.org>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Zhi Yong Wu <wuzhy@cn.ibm.com>, Christoph Hellwig <hch@lst.de>,
	Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Subject: Re: [RFC-v2 0/4] tcm_vhost+cmwq fabric driver code for-3.6
Date: Wed, 18 Jul 2012 20:12:23 +0000	[thread overview]
Message-ID: <3F0FFDE7-B463-42B3-A812-2980FC0DD2C6__17429.9989980229$1342642357$gmane$org@intel.com> (raw)
In-Reply-To: <20120718171722.GA2347@redhat.com>

On Jul 18, 2012, at 10:17 AM, Michael S. Tsirkin wrote:

<snip>

>> You do have to pay very close attention to some things however. Don't change the device identity in any way - even version information, otherwise a Windows initiator will blue-screen. I made that mistake myself, so I remember it well. It seemed like such an innocent change. I don't recall there being any issue with adding commands and we did do that on occasion.
> 
> How about removing commands?

Good question. With the storage system I am familiar with, that would only be a risk if firmware were downgraded. Downgrading would never have been recommended. I am sure that if something like persistent reserve suddenly went away it would cause big trouble for some initiators.

-- 
Mark Rustad, LAN Access Division, Intel Corporation

  parent reply	other threads:[~2012-07-18 20:12 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-11 21:15 [RFC-v2 0/4] tcm_vhost+cmwq fabric driver code for-3.6 Nicholas A. Bellinger
2012-07-11 21:15 ` [RFC-v2 1/4] vhost: Separate vhost-net features from vhost features Nicholas A. Bellinger
2012-07-11 21:15 ` Nicholas A. Bellinger
2012-07-11 21:15 ` [RFC-v2 2/4] vhost: make vhost work queue visible Nicholas A. Bellinger
2012-07-11 21:15 ` Nicholas A. Bellinger
2012-07-11 21:15 ` [RFC-v2 3/4] vhost: Add vhost_scsi specific defines Nicholas A. Bellinger
2012-07-11 21:15 ` Nicholas A. Bellinger
2012-07-11 21:15 ` [RFC-v2 4/4] tcm_vhost: Initial merge for vhost level target fabric driver Nicholas A. Bellinger
2012-07-11 21:15 ` Nicholas A. Bellinger
2012-07-17 15:05 ` [RFC-v2 0/4] tcm_vhost+cmwq fabric driver code for-3.6 Michael S. Tsirkin
2012-07-17 18:55   ` Anthony Liguori
2012-07-17 19:00     ` Michael S. Tsirkin
2012-07-17 21:50     ` Nicholas A. Bellinger
2012-07-18 13:42       ` Anthony Liguori
2012-07-18 13:42       ` Anthony Liguori
2012-07-18 13:56         ` Paolo Bonzini
2012-07-18 15:33         ` Michael S. Tsirkin
2012-07-18 15:53         ` Christoph Hellwig
2012-07-18 15:53         ` Christoph Hellwig
2012-07-18 16:00           ` Michael S. Tsirkin
2012-07-18 16:42             ` Rustad, Mark D
2012-07-18 17:17               ` Michael S. Tsirkin
2012-07-18 20:12                 ` Rustad, Mark D
2012-07-18 20:12                 ` Rustad, Mark D [this message]
2012-07-18 16:42             ` Rustad, Mark D
2012-07-18 16:00           ` Anthony Liguori
2012-07-18 16:00           ` Anthony Liguori
2012-07-18 16:47             ` James Bottomley
2012-07-18 19:12               ` Anthony Liguori
2012-07-19  6:00                 ` Paolo Bonzini
2012-07-19  6:00                 ` Paolo Bonzini
2012-07-19  7:28                   ` James Bottomley
2012-07-19  7:30                     ` Paolo Bonzini
2012-07-18 19:12               ` Anthony Liguori
2012-07-18 22:45         ` Nicholas A. Bellinger
2012-07-18 22:45         ` Nicholas A. Bellinger
2012-07-17 21:17   ` Nicholas A. Bellinger
2012-07-17 21:17   ` Nicholas A. Bellinger
2012-07-17 21:34     ` Michael S. Tsirkin
2012-07-17 22:02       ` Nicholas A. Bellinger
2012-07-17 22:02       ` Nicholas A. Bellinger
2012-07-17 22:18         ` Michael S. Tsirkin
2012-07-17 22:18         ` Michael S. Tsirkin
2012-07-17 22:37           ` Nicholas A. Bellinger
2012-07-17 23:11             ` Michael S. Tsirkin
2012-07-18  0:17               ` Nicholas A. Bellinger
2012-07-17 21:58     ` Michael S. Tsirkin
2012-07-17 22:04       ` Nicholas A. Bellinger

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