From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: SCSI regression in 4.11
Date: Wed, 1 Mar 2017 08:13:58 -0800
Message-ID: <20170301081358.3440c134@xeon-e3>
References: <20170227152955.1362aabb@xeon-e3>
        <20170227171931.30b9f619@xeon-e3>
        <20170228140812.GC20197@lst.de>
        <c1949de0-8b95-e254-1bec-bcdae762890f@kernel.dk>
        <1488301573.3046.9.camel@linux.vnet.ibm.com>
        <20170228105741.6253bb8a@xeon-e3>
        <1488325732.11610.9.camel@linux.vnet.ibm.com>
        <20170228172532.280811ed@xeon-e3>
        <1488349258.20321.11.camel@linux.vnet.ibm.com>
        <20170228224845.1da358ee@xeon-e3>
        <20170301155057.GA13167@lst.de>
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To: Christoph Hellwig <hch@lst.de>
Cc: James Bottomley <jejb@linux.vnet.ibm.com>, Jens Axboe <axboe@kernel.dk>, Linus Torvalds <torvalds@linux-foundation.org>, "Martin K. Petersen" <martin.petersen@oracle.com>, "K. Y. Srinivasan" <kys@microsoft.com>, Dexuan Cui <decui@microsoft.com>, Long Li <longli@microsoft.com>, Josh Poulson <jopoulso@microsoft.com>, v-adsuho@microsoft.com, linux-scsi@vger.kernel.org, Haiyang Zhang <haiyangz@microsoft.com>

Dexuan has reproduced the same problem and discovered that is related to whether virtual DVD is
attached to the VM.  My VM had empty virtual DVD (offline) from the installation of the ISO.
If the DVD device is removed then the VM boots.

This makes the problem less of a catastrophic but we still need to get to root cause.