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GET /api/1.1/patches/2229023/?format=api
HTTP 200 OK
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{
    "id": 2229023,
    "url": "http://patchwork.ozlabs.org/api/1.1/patches/2229023/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260427170520.101242-5-kwolf@redhat.com/",
    "project": {
        "id": 14,
        "url": "http://patchwork.ozlabs.org/api/1.1/projects/14/?format=api",
        "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": "<20260427170520.101242-5-kwolf@redhat.com>",
    "date": "2026-04-27T17:05:20",
    "name": "[4/4] iotests/046: Test that discard/write_zeroes wait for dependencies",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "16df7fd27fa1874c6ae1024cde6e94808ccca239",
    "submitter": {
        "id": 2714,
        "url": "http://patchwork.ozlabs.org/api/1.1/people/2714/?format=api",
        "name": "Kevin Wolf",
        "email": "kwolf@redhat.com"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260427170520.101242-5-kwolf@redhat.com/mbox/",
    "series": [
        {
            "id": 501688,
            "url": "http://patchwork.ozlabs.org/api/1.1/series/501688/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=501688",
            "date": "2026-04-27T17:05:16",
            "name": "qcow2: Fix corruption on discard during write with COW",
            "version": 1,
            "mbox": "http://patchwork.ozlabs.org/series/501688/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/2229023/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/2229023/checks/",
    "tags": {},
    "headers": {
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        ],
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        "X-MC-Unique": "IC3RRJevMQyC33fVLEPCjw-1",
        "X-Mimecast-MFC-AGG-ID": "IC3RRJevMQyC33fVLEPCjw_1777309549",
        "From": "Kevin Wolf <kwolf@redhat.com>",
        "To": "qemu-block@nongnu.org",
        "Cc": "kwolf@redhat.com, hreitz@redhat.com, den@openvz.org, stefanha@redhat.com,\n qemu-stable@nongnu.org, qemu-devel@nongnu.org",
        "Subject": "[PATCH 4/4] iotests/046: Test that discard/write_zeroes wait for\n dependencies",
        "Date": "Mon, 27 Apr 2026 19:05:20 +0200",
        "Message-ID": "<20260427170520.101242-5-kwolf@redhat.com>",
        "In-Reply-To": "<20260427170520.101242-1-kwolf@redhat.com>",
        "References": "<20260427170520.101242-1-kwolf@redhat.com>",
        "MIME-Version": "1.0",
        "Content-Transfer-Encoding": "8bit",
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        "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"
    },
    "content": "This is a regression test for the bug fixed in the previous commit where\ndiscard and write_zeroes operations wouldn't consider their dependencies\nin s->cluster_allocs. Without the fix, this results in a corrupted\nimage.\n\nSigned-off-by: Kevin Wolf <kwolf@redhat.com>\n---\n tests/qemu-iotests/046     | 46 ++++++++++++++++++++++++++++++++++++++\n tests/qemu-iotests/046.out | 36 +++++++++++++++++++++++++++++\n 2 files changed, 82 insertions(+)",
    "diff": "diff --git a/tests/qemu-iotests/046 b/tests/qemu-iotests/046\nindex 4c9ed4d26e1..e03dd401479 100755\n--- a/tests/qemu-iotests/046\n+++ b/tests/qemu-iotests/046\n@@ -184,6 +184,48 @@ aio_write -P 160 0x104000 0x18000\n resume A\n aio_flush\n EOF\n+\n+# Create a pre-allocated zero cluster, then start a write on it and discard it\n+# before the L2 update is made\n+cat  <<EOF\n+write -P 181 0x120000 0x10000\n+write -z 0x120000 0x10000\n+\n+break write_aio A\n+aio_write -P 180 0x120000 0x10000\n+wait_break A\n+aio_discard 0x120000 0x10000\n+resume A\n+aio_flush\n+EOF\n+\n+# Create a pre-allocated zero cluster, then start a write on it and a\n+# concurrent zero write with MAY_UNMAP before the L2 update is made\n+cat  <<EOF\n+write -P 181 0x130000 0x10000\n+write -z 0x130000 0x10000\n+\n+break write_aio A\n+aio_write -P 180 0x130000 0x10000\n+wait_break A\n+aio_write -z -u 0x130000 0x10000\n+resume A\n+aio_flush\n+EOF\n+\n+# Create a pre-allocated zero cluster, then start a write on it and a\n+# concurrent zero write without MAY_UNMAP before the L2 update is made\n+cat  <<EOF\n+write -P 181 0x140000 0x10000\n+write -z 0x140000 0x10000\n+\n+break write_aio A\n+aio_write -P 180 0x140000 0x10000\n+wait_break A\n+aio_write -z 0x140000 0x10000\n+resume A\n+aio_flush\n+EOF\n }\n \n overlay_io | $QEMU_IO blkdebug::\"$TEST_IMG\" | _filter_qemu_io |\\\n@@ -264,6 +306,10 @@ verify_io()\n     # Undefined content for 0x10c000 0x8000\n     echo read -P 160 0x114000 0x8000\n     echo read -P 17  0x11c000 0x4000\n+\n+    echo read -P 0   0x120000 0x10000\n+    echo read -P 0   0x130000 0x10000\n+    echo read -P 0   0x140000 0x10000\n }\n \n verify_io | $QEMU_IO \"$TEST_IMG\" | _filter_qemu_io\ndiff --git a/tests/qemu-iotests/046.out b/tests/qemu-iotests/046.out\nindex b1a03f40414..6341df335c9 100644\n--- a/tests/qemu-iotests/046.out\n+++ b/tests/qemu-iotests/046.out\n@@ -139,6 +139,36 @@ wrote XXX/XXX bytes at offset XXX\n XXX KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n wrote XXX/XXX bytes at offset XXX\n XXX KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+wrote XXX/XXX bytes at offset XXX\n+XXX KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+wrote XXX/XXX bytes at offset XXX\n+XXX KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+blkdebug: Suspended request 'A'\n+blkdebug: Resuming request 'A'\n+wrote XXX/XXX bytes at offset XXX\n+XXX KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+discarded  XXX/XXX bytes at offset XXX\n+XXX KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+wrote XXX/XXX bytes at offset XXX\n+XXX KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+wrote XXX/XXX bytes at offset XXX\n+XXX KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+blkdebug: Suspended request 'A'\n+blkdebug: Resuming request 'A'\n+wrote XXX/XXX bytes at offset XXX\n+XXX KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+wrote XXX/XXX bytes at offset XXX\n+XXX KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+wrote XXX/XXX bytes at offset XXX\n+XXX KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+wrote XXX/XXX bytes at offset XXX\n+XXX KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+blkdebug: Suspended request 'A'\n+blkdebug: Resuming request 'A'\n+wrote XXX/XXX bytes at offset XXX\n+XXX KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+wrote XXX/XXX bytes at offset XXX\n+XXX KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n \n == Verify image content ==\n read 65536/65536 bytes at offset 0\n@@ -239,5 +269,11 @@ read 32768/32768 bytes at offset 1130496\n 32 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n read 16384/16384 bytes at offset 1163264\n 16 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+read 65536/65536 bytes at offset 1179648\n+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+read 65536/65536 bytes at offset 1245184\n+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n+read 65536/65536 bytes at offset 1310720\n+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)\n No errors were found on the image.\n *** done\n",
    "prefixes": [
        "4/4"
    ]
}