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ae23c9 |
From aff6f71a4e88ccec03f8451d9d9605589dddc6a2 Mon Sep 17 00:00:00 2001
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ae23c9 |
From: Markus Armbruster <armbru@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
Date: Thu, 6 Jun 2019 19:15:24 +0100
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ae23c9 |
Subject: [PATCH 7/8] virtio-scsi: Forbid devices with different iothreads
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ae23c9 |
sharing a blockdev
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ae23c9 |
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ae23c9 |
RH-Author: Markus Armbruster <armbru@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
Message-id: <20190606191524.30797-4-armbru@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
Patchwork-id: 88608
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
O-Subject: [RHEL-8.1.0 qemu-kvm PATCH 3/3] virtio-scsi: Forbid devices with different iothreads sharing a blockdev
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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Bugzilla: 1673396 1673401
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
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ae23c9 |
From: Alberto Garcia <berto@igalia.com>
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ae23c9 |
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ae23c9 |
This patch forbids attaching a disk to a SCSI device if its using a
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ae23c9 |
different AioContext. Test case included.
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ae23c9 |
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ae23c9 |
Signed-off-by: Alberto Garcia <berto@igalia.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
(cherry picked from commit eb97813ff5fd5bdffc8ed9f5be5a3a50eae70a2c)
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ae23c9 |
Signed-off-by: Markus Armbruster <armbru@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
ae23c9 |
---
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ae23c9 |
hw/scsi/virtio-scsi.c | 7 +++++++
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ae23c9 |
tests/qemu-iotests/240 | 22 ++++++++++++++++++++++
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ae23c9 |
tests/qemu-iotests/240.out | 20 ++++++++++++++++++++
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ae23c9 |
3 files changed, 49 insertions(+)
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ae23c9 |
diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c
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ae23c9 |
index 85073f6..391500b 100644
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ae23c9 |
--- a/hw/scsi/virtio-scsi.c
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ae23c9 |
+++ b/hw/scsi/virtio-scsi.c
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ae23c9 |
@@ -800,9 +800,16 @@ static void virtio_scsi_hotplug(HotplugHandler *hotplug_dev, DeviceState *dev,
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return;
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}
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ae23c9 |
if (s->ctx && !s->dataplane_fenced) {
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+ AioContext *ctx;
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if (blk_op_is_blocked(sd->conf.blk, BLOCK_OP_TYPE_DATAPLANE, errp)) {
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return;
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}
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+ ctx = blk_get_aio_context(sd->conf.blk);
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+ if (ctx != s->ctx && ctx != qemu_get_aio_context()) {
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+ error_setg(errp, "Cannot attach a blockdev that is using "
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+ "a different iothread");
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+ return;
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+ }
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virtio_scsi_acquire(s);
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blk_set_aio_context(sd->conf.blk, s->ctx);
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virtio_scsi_release(s);
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diff --git a/tests/qemu-iotests/240 b/tests/qemu-iotests/240
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index 5d499c9..65cc3b3 100755
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--- a/tests/qemu-iotests/240
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+++ b/tests/qemu-iotests/240
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@@ -101,6 +101,28 @@ run_qemu <
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{ "execute": "quit"}
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EOF
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+echo
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+echo === Attach two SCSI disks using the same block device but different iothreads ===
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+echo
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+
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+run_qemu <
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+{ "execute": "qmp_capabilities" }
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+{ "execute": "blockdev-add", "arguments": {"driver": "null-co", "node-name": "hd0", "read-only": true}}
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+{ "execute": "object-add", "arguments": {"qom-type": "iothread", "id": "iothread0"}}
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+{ "execute": "object-add", "arguments": {"qom-type": "iothread", "id": "iothread1"}}
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+{ "execute": "device_add", "arguments": {"id": "scsi0", "driver": "${virtio_scsi}", "iothread": "iothread0"}}
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+{ "execute": "device_add", "arguments": {"id": "scsi1", "driver": "${virtio_scsi}", "iothread": "iothread1"}}
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+{ "execute": "device_add", "arguments": {"id": "scsi-hd0", "driver": "scsi-hd", "drive": "hd0", "bus": "scsi0.0"}}
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+{ "execute": "device_add", "arguments": {"id": "scsi-hd1", "driver": "scsi-hd", "drive": "hd0", "bus": "scsi1.0"}}
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+{ "execute": "device_del", "arguments": {"id": "scsi-hd0"}}
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ae23c9 |
+{ "execute": "device_add", "arguments": {"id": "scsi-hd1", "driver": "scsi-hd", "drive": "hd0", "bus": "scsi1.0"}}
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ae23c9 |
+{ "execute": "device_del", "arguments": {"id": "scsi-hd1"}}
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+{ "execute": "device_del", "arguments": {"id": "scsi0"}}
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+{ "execute": "device_del", "arguments": {"id": "scsi1"}}
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ae23c9 |
+{ "execute": "blockdev-del", "arguments": {"node-name": "hd0"}}
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+{ "execute": "quit"}
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ae23c9 |
+EOF
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+
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ae23c9 |
# success, all done
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ae23c9 |
echo "*** done"
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ae23c9 |
rm -f $seq.full
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ae23c9 |
diff --git a/tests/qemu-iotests/240.out b/tests/qemu-iotests/240.out
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index 701cb5c..d763929 100644
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--- a/tests/qemu-iotests/240.out
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+++ b/tests/qemu-iotests/240.out
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@@ -31,4 +31,24 @@ QMP_VERSION
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{"return": {}}
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{"return": {}}
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{"return": {}}
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+
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+=== Attach two SCSI disks using the same block device but different iothreads ===
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+
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+Testing:
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+QMP_VERSION
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+{"return": {}}
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+{"return": {}}
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+{"return": {}}
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+{"return": {}}
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+{"return": {}}
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+{"return": {}}
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+{"return": {}}
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+{"error": {"class": "GenericError", "desc": "Cannot attach a blockdev that is using a different iothread"}}
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+{"return": {}}
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+{"return": {}}
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+{"return": {}}
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+{"return": {}}
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+{"return": {}}
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+{"return": {}}
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+{"return": {}}
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*** done
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--
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1.8.3.1
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