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bh=WmkBOZQXw8TYDamyy1qpM/47me1gOgpWai3PcMTicTc=; b=XOBA23sVskaWOwy41Ag0uMf4PqJoaPO89neBSdrsNFPpCTrq/3rFZf6Z SgUg/xtf11Q2IDaCH9Yz+NKh8t0TBnzO55JlpSkWX6HX87U+FoW9zz12q AleeUKW7VAn1olLXWHy4eZNSi2ZJqQkdsWSLQBZHlPIU+ahgz/DCfcZjW gHKCRWdoFzEt18al2BHq7cxqHX/XT3u1+4nR9Fh5l69PMTVgVqjiBNgi1 LaJz02d16VMEhulT6Jwk8p2JeO2tsG1bq1flJnAZBaVdZVWdAMVab8PQk 6yMv751R+RcdYf8CJAnuf8/M99SsFWdMwiJ7AX+/Z+7Rqx+EijTvmPmGO g==; IronPort-SDR: F+EwWzUJEar03fkdi64Fye2foTOUyIVux+5TBEzMcs5UfSRl+NB6tBdBJDWJutPtlDkbbl792s yBfyIEBTDebWNrUuBG4ERioRHApNR+dYLmg61qwQV2TZm4wqtrGip9ZUSMppVW0pj1oN4LcTGL 4J2SjZ9Mt36WEQ/i84IjAsV178wEW/9ycLTAHvLLcoKHTTg1+PBNhtKuFguo+uihDas+Ok7JLO TqaOTFE0wMj/yHYffffMxf9Lfuh6MTZaLarJfkQsF2Zb8tKZNNyYa5J2EhsxUO+3OxHlMCyxAZ vUE= X-IronPort-AV: E=Sophos;i="5.63,471,1557158400"; d="scan'208";a="212488454" IronPort-SDR: SH9a08Re68N42/kyJ7TF0h6Z5HT+aNwkR6a6B+OGrnqufwdVSYrfDBumMarc8jv3BZutXFySrI dgspAq7eXuMFD9Fwpxy7OrboMwlZjW8CzcVvdIc81jiDowSyrpd1dJWbxDT9bjTr4lvt6Uujiq uLUBagMuZlUjbMdPRwKhUJKHNVqB7TnZxQ4I65KNWpteQlrVxHOAFE+AN8uIpJWVV/nJotwGpw WZC8TR4j6n6RYuWk0LuFdbhOUv+wDgcwkRZ7nqI2k8v20yJZQHJv2P2tVbwlARyn3YsqpDtKTQ 0NAeQqQYwI9wzscb4WC0V24I IronPort-SDR: VYaDgpXPS3hKGY7rbJDMZ8M1eYIoLDZBFOz7e08/v9DrfOqYZLv2+h498vft5lQBl4tENaTIER XLv1OTdeR6079GrVOVKzNBaU0X3Wwht2COpZwtYcZILs6w8FlIUBBjcGgOdzeIOE4zDgcclDgb tqC8UHVMvUqce4AGUOEvFX7UyNK2owouiZSv9UkxsJtXdL65xT0kEHbPbSRPezDuTDNv057iAJ 8yHGHUmVD9YK0UWNSLgxEX1EA0PUgzbaQEVe13iDKp8tzU1+/fBPieElaiohCyqZz8/LS6qhOC 1z8= From: Dmitry Fomichev To: kwolf@redhat.com, mreitz@redhat.com, mst@redhat.com, stefanha@redhat.com, pbonzini@redhat.com, fam@euphon.net, qemu-block@nongnu.org, qemu-devel@nongnu.org Date: Tue, 9 Jul 2019 16:38:05 -0400 Message-Id: <20190709203806.17550-4-dmitry.fomichev@wdc.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190709203806.17550-1-dmitry.fomichev@wdc.com> References: <20190709203806.17550-1-dmitry.fomichev@wdc.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: FreeBSD 9.x X-Received-From: 68.232.143.124 Subject: [Qemu-devel] [PATCH 3/4] virtio-blk: Don't realize zoned block devices X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Dmitry Fomichev Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Prevent virtio-blk code from attaching a zoned block device because it will otherwise appear as a reqular block device at the guest and that will most certainly cause problems. The functionality to support ZBDs via virtio-blk should be pretty useful and there are some attempts underway to get it implemented, but such work will inevitably lead to some modifications in virtio protocol spec. Therefore, this activity is considered a more long-term effort. So for now, we just don't allow zoned block devices to work via virtio-blk. Signed-off-by: Dmitry Fomichev --- hw/block/virtio-blk.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c index cbb3729158..c11e028308 100644 --- a/hw/block/virtio-blk.c +++ b/hw/block/virtio-blk.c @@ -1140,6 +1140,11 @@ static void virtio_blk_device_realize(DeviceState *d= ev, Error **errp) return; } =20 + if (blk_is_zoned(conf->conf.blk)) { + error_setg(errp, "zoned block devices are not supported"); + return; + } + if (virtio_has_feature(s->host_features, VIRTIO_BLK_F_DISCARD) && (!conf->max_discard_sectors || conf->max_discard_sectors > BDRV_REQUEST_MAX_SECTORS)) { --=20 2.21.0