qemu-kvm/kvm-virtio-scsi-Move-BlockBackend-back-to-the-main-AioCo.patch
Danilo C. L. de Paula b705db35b7 * Mon Feb 11 2019 Danilo Cesar Lemes de Paula <ddepaula@redhat.com> - 3.1.0-13.el8
- kvm-Acceptance-tests-add-Linux-initrd-checking-test.patch [bz#1669922]
- kvm-mmap-alloc-unfold-qemu_ram_mmap.patch [bz#1671519]
- kvm-mmap-alloc-fix-hugetlbfs-misaligned-length-in-ppc64.patch [bz#1671519]
- kvm-BZ1653590-Require-at-least-64kiB-pages-for-downstrea.patch [bz#1653590]
- kvm-block-Fix-invalidate_cache-error-path-for-parent-act.patch [bz#1673014]
- kvm-virtio-scsi-Move-BlockBackend-back-to-the-main-AioCo.patch [bz#1656276 bz#1662508]
- kvm-scsi-disk-Acquire-the-AioContext-in-scsi_-_realize.patch [bz#1656276 bz#1662508]
- kvm-virtio-scsi-Forbid-devices-with-different-iothreads-.patch [bz#1656276 bz#1662508]
- Resolves: bz#1653590
  ([Fast train]had better stop qemu immediately while guest was making use of an improper page size)
- Resolves: bz#1656276
  (qemu-kvm core dumped after hotplug the deleted disk with iothread parameter)
- Resolves: bz#1662508
  (Qemu core dump when start guest with two disks using same drive)
- Resolves: bz#1669922
  (Backport avocado-qemu tests for QEMU 3.1)
- Resolves: bz#1671519
  (RHEL8.0 Snapshot3 - qemu doesn't free up hugepage memory when hotplug/hotunplug using memory-backend-file (qemu-kvm))
- Resolves: bz#1673014
  (Local VM and migrated VM on the same host can run with same RAW file as visual disk source while without shareable configured or lock manager enabled)
2019-02-11 14:09:54 -02:00

187 lines
5.5 KiB
Diff

From c5f17f695247757f61b430ad32079b903331be02 Mon Sep 17 00:00:00 2001
From: Markus Armbruster <armbru@redhat.com>
Date: Thu, 7 Feb 2019 12:18:17 +0000
Subject: [PATCH 6/8] virtio-scsi: Move BlockBackend back to the main
AioContext on unplug
RH-Author: Markus Armbruster <armbru@redhat.com>
Message-id: <20190207121819.20092-2-armbru@redhat.com>
Patchwork-id: 84290
O-Subject: [RHEL-8.0/AV qemu-kvm PATCH 1/3] virtio-scsi: Move BlockBackend back to the main AioContext on unplug
Bugzilla: 1656276 1662508
RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
RH-Acked-by: Max Reitz <mreitz@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
From: Alberto Garcia <berto@igalia.com>
This fixes a crash when attaching a disk to a SCSI device using
iothreads, then detaching it and reattaching it again. Test case
included.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit a6f230c8d13a7ff3a0c7f1097412f44bfd9eff0b)
[Trivial conflict in tests/qemu-iotests/group due to lack of commit
1c4e7b640b resolved]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/scsi/virtio-scsi.c | 6 ++++
tests/qemu-iotests/240 | 89 ++++++++++++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/240.out | 18 ++++++++++
tests/qemu-iotests/group | 1 +
4 files changed, 114 insertions(+)
create mode 100755 tests/qemu-iotests/240
create mode 100644 tests/qemu-iotests/240.out
diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c
index 9f754c4..f0d4f10 100644
--- a/hw/scsi/virtio-scsi.c
+++ b/hw/scsi/virtio-scsi.c
@@ -833,6 +833,12 @@ static void virtio_scsi_hotunplug(HotplugHandler *hotplug_dev, DeviceState *dev,
virtio_scsi_release(s);
}
+ if (s->ctx) {
+ virtio_scsi_acquire(s);
+ blk_set_aio_context(sd->conf.blk, qemu_get_aio_context());
+ virtio_scsi_release(s);
+ }
+
qdev_simple_device_unplug_cb(hotplug_dev, dev, errp);
}
diff --git a/tests/qemu-iotests/240 b/tests/qemu-iotests/240
new file mode 100755
index 0000000..ead7ee0
--- /dev/null
+++ b/tests/qemu-iotests/240
@@ -0,0 +1,89 @@
+#!/bin/bash
+#
+# Test hot plugging and unplugging with iothreads
+#
+# Copyright (C) 2019 Igalia, S.L.
+# Author: Alberto Garcia <berto@igalia.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+# creator
+owner=berto@igalia.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+status=1 # failure is the default!
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+_supported_fmt generic
+_supported_proto generic
+_supported_os Linux
+
+do_run_qemu()
+{
+ echo Testing: "$@"
+ $QEMU -nographic -qmp stdio -serial none "$@"
+ echo
+}
+
+# Remove QMP events from (pretty-printed) output. Doesn't handle
+# nested dicts correctly, but we don't get any of those in this test.
+_filter_qmp_events()
+{
+ tr '\n' '\t' | sed -e \
+ 's/{\s*"timestamp":\s*{[^}]*},\s*"event":[^,}]*\(,\s*"data":\s*{[^}]*}\)\?\s*}\s*//g' \
+ | tr '\t' '\n'
+}
+
+run_qemu()
+{
+ do_run_qemu "$@" 2>&1 | _filter_qmp | _filter_qmp_events
+}
+
+case "$QEMU_DEFAULT_MACHINE" in
+ s390-ccw-virtio)
+ virtio_scsi=virtio-scsi-ccw
+ ;;
+ *)
+ virtio_scsi=virtio-scsi-pci
+ ;;
+esac
+
+echo
+echo === Unplug a SCSI disk and then plug it again ===
+echo
+
+run_qemu <<EOF
+{ "execute": "qmp_capabilities" }
+{ "execute": "blockdev-add", "arguments": {"driver": "null-co", "node-name": "hd0"}}
+{ "execute": "object-add", "arguments": {"qom-type": "iothread", "id": "iothread0"}}
+{ "execute": "device_add", "arguments": {"id": "scsi0", "driver": "${virtio_scsi}", "iothread": "iothread0"}}
+{ "execute": "device_add", "arguments": {"id": "scsi-hd0", "driver": "scsi-hd", "drive": "hd0"}}
+{ "execute": "device_del", "arguments": {"id": "scsi-hd0"}}
+{ "execute": "device_add", "arguments": {"id": "scsi-hd0", "driver": "scsi-hd", "drive": "hd0"}}
+{ "execute": "device_del", "arguments": {"id": "scsi-hd0"}}
+{ "execute": "device_del", "arguments": {"id": "scsi0"}}
+{ "execute": "blockdev-del", "arguments": {"node-name": "hd0"}}
+{ "execute": "quit"}
+EOF
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0
diff --git a/tests/qemu-iotests/240.out b/tests/qemu-iotests/240.out
new file mode 100644
index 0000000..432d981
--- /dev/null
+++ b/tests/qemu-iotests/240.out
@@ -0,0 +1,18 @@
+QA output created by 240
+
+=== Unplug a SCSI disk and then plug it again ===
+
+Testing:
+QMP_VERSION
+{"return": {}}
+{"return": {}}
+{"return": {}}
+{"return": {}}
+{"return": {}}
+{"return": {}}
+{"return": {}}
+{"return": {}}
+{"return": {}}
+{"return": {}}
+{"return": {}}
+*** done
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 268fefa..27cfeeb 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -234,3 +234,4 @@
234 auto quick migration
235 auto quick
238 auto quick
+240 auto quick
--
1.8.3.1