{"id":2197748,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2197748/?format=json","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.0/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260218132633.29748-25-hreitz@redhat.com>","date":"2026-02-18T13:26:33","name":"[v4,24/24] iotests/308: Add multi-threading sanity test","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"ce1c5831e215c418d1820faf89dc776a07821f62","submitter":{"id":82279,"url":"http://patchwork.ozlabs.org/api/1.0/people/82279/?format=json","name":"Hanna Czenczek","email":"hreitz@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260218132633.29748-25-hreitz@redhat.com/mbox/","series":[{"id":492547,"url":"http://patchwork.ozlabs.org/api/1.0/series/492547/?format=json","date":"2026-02-18T13:26:09","name":"export/fuse: Use coroutines and multi-threading","version":4,"mbox":"http://patchwork.ozlabs.org/series/492547/mbox/"}],"check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2197748/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=MptuV2Qk;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=google header.b=FUHAJtut;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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charset=UTF-8","Content-Transfer-Encoding":"8bit","Received-SPF":"pass client-ip=170.10.129.124; envelope-from=hreitz@redhat.com;\n helo=us-smtp-delivery-124.mimecast.com","X-Spam_score_int":"-20","X-Spam_score":"-2.1","X-Spam_bar":"--","X-Spam_report":"(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.043,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no","X-Spam_action":"no action","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"Run qemu-img bench on a simple multi-threaded FUSE export to test that\nit works.\n\nReviewed-by: Stefan Hajnoczi \nSigned-off-by: Hanna Czenczek \n---\n tests/qemu-iotests/308 | 51 ++++++++++++++++++++++++++++++++++\n tests/qemu-iotests/308.out | 56 ++++++++++++++++++++++++++++++++++++++\n 2 files changed, 107 insertions(+)","diff":"diff --git a/tests/qemu-iotests/308 b/tests/qemu-iotests/308\nindex a83c6fc01f..f4a06a522e 100755\n--- a/tests/qemu-iotests/308\n+++ b/tests/qemu-iotests/308\n@@ -441,6 +441,57 @@ $QEMU_IO -c 'read -P 0 0 64M' \"$TEST_IMG\" | _filter_qemu_io\n \n _cleanup_test_img\n \n+echo\n+echo '=== Multi-threading ==='\n+\n+# Just set up a null block device, export it (with multi-threading), and run\n+# qemu-img bench on it (to get parallel requests)\n+\n+_launch_qemu\n+_send_qemu_cmd $QEMU_HANDLE \\\n+ \"{'execute': 'qmp_capabilities'}\" \\\n+ 'return'\n+\n+_send_qemu_cmd $QEMU_HANDLE \\\n+ \"{'execute': 'blockdev-add',\n+ 'arguments': {\n+ 'driver': 'null-co',\n+ 'node-name': 'null'\n+ } }\" \\\n+ 'return'\n+\n+for id in iothread{0,1,2,3}; do\n+ _send_qemu_cmd $QEMU_HANDLE \\\n+ \"{'execute': 'object-add',\n+ 'arguments': {\n+ 'qom-type': 'iothread',\n+ 'id': '$id'\n+ } }\" \\\n+ 'return'\n+done\n+\n+echo\n+\n+iothreads=\"['iothread0', 'iothread1', 'iothread2', 'iothread3']\"\n+fuse_export_add \\\n+ 'export' \\\n+ \"'mountpoint': '$EXT_MP', 'iothread': $iothreads\" \\\n+ 'return' \\\n+ 'null'\n+\n+echo\n+$QEMU_IMG bench -f raw \"$EXT_MP\" |\n+ sed -e 's/[0-9.]\\+ seconds/X.XXX seconds/'\n+echo\n+\n+fuse_export_del 'export'\n+\n+_send_qemu_cmd $QEMU_HANDLE \\\n+ \"{'execute': 'quit'}\" \\\n+ 'return'\n+\n+wait=yes _cleanup_qemu\n+\n # success, all done\n echo \"*** done\"\n rm -f $seq.full\ndiff --git a/tests/qemu-iotests/308.out b/tests/qemu-iotests/308.out\nindex ebeaf64b48..580cc94e92 100644\n--- a/tests/qemu-iotests/308.out\n+++ b/tests/qemu-iotests/308.out\n@@ -217,4 +217,60 @@ read 67108864/67108864 bytes at offset 0\n {\"return\": {}}\n read 67108864/67108864 bytes at offset 0\n 64 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+\n+=== Multi-threading ===\n+{'execute': 'qmp_capabilities'}\n+{\"return\": {}}\n+{'execute': 'blockdev-add',\n+ 'arguments': {\n+ 'driver': 'null-co',\n+ 'node-name': 'null'\n+ } }\n+{\"return\": {}}\n+{'execute': 'object-add',\n+ 'arguments': {\n+ 'qom-type': 'iothread',\n+ 'id': 'iothread0'\n+ } }\n+{\"return\": {}}\n+{'execute': 'object-add',\n+ 'arguments': {\n+ 'qom-type': 'iothread',\n+ 'id': 'iothread1'\n+ } }\n+{\"return\": {}}\n+{'execute': 'object-add',\n+ 'arguments': {\n+ 'qom-type': 'iothread',\n+ 'id': 'iothread2'\n+ } }\n+{\"return\": {}}\n+{'execute': 'object-add',\n+ 'arguments': {\n+ 'qom-type': 'iothread',\n+ 'id': 'iothread3'\n+ } }\n+{\"return\": {}}\n+\n+{'execute': 'block-export-add',\n+ 'arguments': {\n+ 'type': 'fuse',\n+ 'id': 'export',\n+ 'node-name': 'null',\n+ 'mountpoint': 'TEST_DIR/t.IMGFMT.fuse', 'iothread': ['iothread0', 'iothread1', 'iothread2', 'iothread3']\n+ } }\n+{\"return\": {}}\n+\n+Sending 75000 read requests, 4096 bytes each, 64 in parallel (starting at offset 0, step size 4096)\n+Run completed in X.XXX seconds.\n+\n+{'execute': 'block-export-del',\n+ 'arguments': {\n+ 'id': 'export'\n+ } }\n+{\"return\": {}}\n+{\"timestamp\": {\"seconds\": TIMESTAMP, \"microseconds\": TIMESTAMP}, \"event\": \"BLOCK_EXPORT_DELETED\", \"data\": {\"id\": \"export\"}}\n+{'execute': 'quit'}\n+{\"timestamp\": {\"seconds\": TIMESTAMP, \"microseconds\": TIMESTAMP}, \"event\": \"SHUTDOWN\", \"data\": {\"guest\": false, \"reason\": \"host-qmp-quit\"}}\n+{\"return\": {}}\n *** done\n","prefixes":["v4","24/24"]}