From: Stefan Hajnoczi <stefanha@redhat.com>
To: <qemu-devel@nongnu.org>
Cc: Kevin Wolf <kwolf@redhat.com>,
qemu-block@nongnu.org, "Michael S. Tsirkin" <mst@redhat.com>,
libvir-list@redhat.com, Stefan Hajnoczi <stefanha@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Christoph Hellwig <hch@lst.de>
Subject: [PATCH] virtio-blk: deprecate SCSI passthrough
Date: Fri, 13 Dec 2019 14:46:26 +0000 [thread overview]
Message-ID: <20191213144626.1208237-1-stefanha@redhat.com> (raw)
The Linux virtio_blk.ko guest driver is removing legacy SCSI passthrough
support. Deprecate this feature in QEMU too.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
qemu-deprecated.texi | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/qemu-deprecated.texi b/qemu-deprecated.texi
index 4b4b7425ac..ef94d497da 100644
--- a/qemu-deprecated.texi
+++ b/qemu-deprecated.texi
@@ -285,6 +285,17 @@ spec you can use the ``-cpu rv64gcsu,priv_spec=v1.9.1`` command line argument.
@section Device options
+@subsection Emulated device options
+
+@subsubsection -device virtio-blk,scsi=on|off (since 5.0.0)
+
+The virtio-blk SCSI passthrough feature is a legacy VIRTIO feature. VIRTIO 1.0
+and later do not support it because the virtio-scsi device was introduced for
+full SCSI support. Use virtio-scsi instead when SCSI passthrough is required.
+
+Note this also applies to ``-device virtio-blk-pci,scsi=on|off'', which is an
+alias.
+
@subsection Block device options
@subsubsection "backing": "" (since 2.12.0)
--
2.23.0
next reply other threads:[~2019-12-13 21:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-13 14:46 Stefan Hajnoczi [this message]
2019-12-13 14:56 ` [PATCH] virtio-blk: deprecate SCSI passthrough Paolo Bonzini
2019-12-13 15:07 ` [libvirt] " Peter Krempa
2019-12-13 15:10 ` Daniel P. Berrangé
2019-12-13 15:25 ` Paolo Bonzini
2019-12-13 14:56 ` Christoph Hellwig
2019-12-14 12:21 ` Thomas Huth
2019-12-17 10:38 ` Stefan Hajnoczi
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