{"id":2197743,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2197743/?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":"<20260218132633.29748-21-hreitz@redhat.com>","date":"2026-02-18T13:26:29","name":"[v4,20/24] iotests/307: Test multi-thread export interface","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"825cb47cb3750aaa9b6d8421afac68d4f658a3b7","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/20260218132633.29748-21-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/2197743/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=fv90111k;\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=URyUR9rx;\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":"Test the QAPI interface for multi-threaded exports. None of our exports\ncurrently support multi-threading, so it's always an error in the end,\nbut we can still test the specific errors.\n\nSigned-off-by: Hanna Czenczek \n---\n tests/qemu-iotests/307 | 47 ++++++++++++++++++++++++++++++++++++++\n tests/qemu-iotests/307.out | 18 +++++++++++++++\n 2 files changed, 65 insertions(+)","diff":"diff --git a/tests/qemu-iotests/307 b/tests/qemu-iotests/307\nindex b429b5aa50..f6ee3ebec0 100755\n--- a/tests/qemu-iotests/307\n+++ b/tests/qemu-iotests/307\n@@ -142,5 +142,52 @@ with iotests.FilePath('image') as img, \\\n vm.qmp_log('query-block-exports')\n iotests.qemu_nbd_list_log('-k', socket)\n \n+ iotests.log('\\n=== Using multi-thread with NBD ===')\n+\n+ # Actual multi-threading; (currently) not supported by NBD\n+ vm.qmp_log('block-export-add',\n+ id='export0',\n+ type='nbd',\n+ node_name='fmt',\n+ iothread=['iothread0', 'iothread1'])\n+\n+ # Should be treated the same way as actual multi-threading, even if there's\n+ # only a single thread\n+ vm.qmp_log('block-export-add',\n+ id='export0',\n+ type='nbd',\n+ node_name='fmt',\n+ iothread=['iothread0'])\n+\n+ iotests.log('\\n=== Empty thread list')\n+\n+ # Simply not allowed\n+ vm.qmp_log('block-export-add',\n+ id='export0',\n+ type='nbd',\n+ node_name='fmt',\n+ iothread=[])\n+\n+ iotests.log('\\n=== Non-existent thread name in list')\n+\n+ # Expect an error, even if NBD does not support multi-threading, because the\n+ # list is parsed before being passed to NBD\n+ vm.qmp_log('block-export-add',\n+ id='export0',\n+ type='nbd',\n+ node_name='fmt',\n+ iothread=['iothread0', 'nothread', 'iothread1'])\n+\n+ iotests.log('\\n=== Multi-thread with fixed-iothread')\n+\n+ # With multi-threading, there is no single context to give the BDS, so it is\n+ # just left where it is. fixed-iothread does not make sense then.\n+ vm.qmp_log('block-export-add',\n+ id='export0',\n+ type='nbd',\n+ node_name='fmt',\n+ iothread=['iothread0', 'iothread1'],\n+ fixed_iothread=True)\n+\n iotests.log('\\n=== Shut down QEMU ===')\n vm.shutdown()\ndiff --git a/tests/qemu-iotests/307.out b/tests/qemu-iotests/307.out\nindex f645f3315f..a9b37d3ac1 100644\n--- a/tests/qemu-iotests/307.out\n+++ b/tests/qemu-iotests/307.out\n@@ -134,4 +134,22 @@ read failed: Input/output error\n exports available: 0\n \n \n+=== Using multi-thread with NBD ===\n+{\"execute\": \"block-export-add\", \"arguments\": {\"id\": \"export0\", \"iothread\": [\"iothread0\", \"iothread1\"], \"node-name\": \"fmt\", \"type\": \"nbd\"}}\n+{\"error\": {\"class\": \"GenericError\", \"desc\": \"NBD export does not support multi-threading\"}}\n+{\"execute\": \"block-export-add\", \"arguments\": {\"id\": \"export0\", \"iothread\": [\"iothread0\"], \"node-name\": \"fmt\", \"type\": \"nbd\"}}\n+{\"error\": {\"class\": \"GenericError\", \"desc\": \"NBD export does not support multi-threading\"}}\n+\n+=== Empty thread list\n+{\"execute\": \"block-export-add\", \"arguments\": {\"id\": \"export0\", \"iothread\": [], \"node-name\": \"fmt\", \"type\": \"nbd\"}}\n+{\"error\": {\"class\": \"GenericError\", \"desc\": \"The set of I/O threads must not be empty\"}}\n+\n+=== Non-existent thread name in list\n+{\"execute\": \"block-export-add\", \"arguments\": {\"id\": \"export0\", \"iothread\": [\"iothread0\", \"nothread\", \"iothread1\"], \"node-name\": \"fmt\", \"type\": \"nbd\"}}\n+{\"error\": {\"class\": \"GenericError\", \"desc\": \"iothread \\\"nothread\\\" not found\"}}\n+\n+=== Multi-thread with fixed-iothread\n+{\"execute\": \"block-export-add\", \"arguments\": {\"fixed-iothread\": true, \"id\": \"export0\", \"iothread\": [\"iothread0\", \"iothread1\"], \"node-name\": \"fmt\", \"type\": \"nbd\"}}\n+{\"error\": {\"class\": \"GenericError\", \"desc\": \"Cannot use fixed-iothread for a multi-threaded export\"}}\n+\n === Shut down QEMU ===\n","prefixes":["v4","20/24"]}