linux-kernel - Re: Regression in virtio block driver with 4.13.2

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Message-ID: <227487f8-3b7a-a431-da32-890f4a73732b@redhat.com>
Date:   Tue, 19 Sep 2017 17:15:47 -0700
From:   Laura Abbott <labbott@...hat.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: Regression in virtio block driver with 4.13.2

On 09/17/2017 04:57 PM, Christoph Hellwig wrote:
> On Sat, Sep 16, 2017 at 04:16:06PM -0700, Laura Abbott wrote:
>> Yes, the issue goes  away when CONFIG_VIRTIO_BLK_SCSI is
>> disabled.
> 
> Ok, so it's probably related to follow ups to the scsi_request split.
> 
> That being said, I would highly recommend turning off
> CONFIG_VIRTIO_BLK_SCSI in fedora.  The feature has caused more trouble
> than it helped with, and should never have been added (saying that as
> the person who added it). It was never supported with virtio 1.0 devices
> and has been disabled in qemu by default for quite a while.
> 

Thanks for the pointer, I went and turned it off on our 4.13 based
kernels.

Laura