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-rw-r--r--gitlab/issues_text/target_missing/host_missing/accel_missing/111795
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diff --git a/gitlab/issues_text/target_missing/host_missing/accel_missing/1117 b/gitlab/issues_text/target_missing/host_missing/accel_missing/1117
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@@ -1,95 +0,0 @@
-migration corrupts qcow2 metadata when "backing file: json:{" is involve
-Description of problem:
-the bug happens when you have a qcow2 with backing file in json format
-image: 2.qcow2
-[...]
-backing file: json:{"driver": "qcow2", "file": { "driver": "file", "filename": "1.qcow2"}}
-backing file format: qcow2
-[...]
-if you want to migrate a VM that have that kind of qcow2 attached, the migration is gonna corrupted qcow2 metadata in memory and info block will look like this
-json:{\"backing\": {\"backing\": {\"driver\": \"qcow2\", \"file\": {\"driver\": \"file\", \"filename\": \"0.qcow2\"}}, \"driver\": \"qcow2\", \"file\": {\"driver\": \"file\", \"filename\": \"1.qcow2\"}}, \"driver\": \"qcow2\", \"file\": {\"driver\": \"file\", \"filename\": \"2.qcow2\"}}
-later if you execute blockdev-snapshot-sync, the corrupt json will be write to the new qcow2 resulting with a unusable qcow2
-Steps to reproduce:
-/opt/qemu-7.0.0/bin/qemu-img create -f qcow2 0.qcow2 64G
-/opt/qemu-7.0.0/bin/qemu-img create -F qcow2 -f qcow2 -b 'json:{"driver": "qcow2", "file": { "driver": "file", "filename": "0.qcow2"}}' 1.qcow2
-/opt/qemu-7.0.0/bin/qemu-img create -F qcow2 -f qcow2 -b 'json:{"driver": "qcow2", "file": { "driver": "file", "filename": "1.qcow2"}}' 2.qcow2
-
-#VM1
-/opt/qemu-7.0.0/bin/qemu-system-x86_64 -enable-kvm -drive if=virtio,file=2.qcow2,node-name=drive0 -qmp stdio -display none
-
-#VM2
-/opt/qemu-7.0.0/bin/qemu-system-x86_64 -enable-kvm -drive if=virtio,file=2.qcow2,node-name=drive0 -qmp stdio -display none -incoming tcp::8082
-
-
-#VM1 INFO BLOCK
-{"QMP": {"version": {"qemu": {"micro": 0, "minor": 0, "major": 7}, "package": ""}, "capabilities": ["oob"]}}
-{ "execute": "qmp_capabilities" }
-{"return": {}}
-{ "execute": "human-monitor-command", "arguments": {'command-line': 'info block'} }
-{"return": "virtio0 (drive0): 2.qcow2 (qcow2)\r\n    Attached to:      /machine/peripheral-anon/device[0]/virtio-backend\r\n    Cache mode:       writethrough\r\n    Backing file:     1.qcow2 (chain depth: 2)\r\n\r\nide1-cd0: [not inserted]\r\n    Attached to:      /machine/unattached/device[24]\r\n    Removable device: not locked, tray closed\r\n\r\nfloppy0: [not inserted]\r\n    Attached to:      /machine/unattached/device[17]\r\n    Removable device: not locked, tray closed\r\n\r\nsd0: [not inserted]\r\n    Removable device: not locked, tray closed\r\n"}
-
-#VM1 MIGRATE
-{ "execute": "migrate", "arguments": { "uri": "tcp:localhost:8082" } }
-{"return": {}}
-{"timestamp": {"seconds": 1658491019, "microseconds": 233177}, "event": "STOP"}
-
-
-#VM2 INFO BLOCK
-{"QMP": {"version": {"qemu": {"micro": 0, "minor": 0, "major": 7}, "package": ""}, "capabilities": ["oob"]}}
-{ "execute": "qmp_capabilities" }
-{"return": {}}
-{ "execute": "human-monitor-command", "arguments": {'command-line': 'info block'} }
-{"return": "virtio0 (drive0): 2.qcow2 (qcow2)\r\n    Attached to:      /machine/peripheral-anon/device[0]/virtio-backend\r\n    Cache mode:       writeback\r\n    Backing file:     1.qcow2 (chain depth: 2)\r\n\r\nide1-cd0: [not inserted]\r\n    Attached to:      /machine/unattached/device[24]\r\n    Removable device: not locked, tray closed\r\n\r\nfloppy0: [not inserted]\r\n    Attached to:      /machine/unattached/device[17]\r\n    Removable device: not locked, tray closed\r\n\r\nsd0: [not inserted]\r\n    Removable device: not locked, tray closed\r\n"}
-
-#VM2 MIGRATE
-{"timestamp": {"seconds": 1658491019, "microseconds": 249760}, "event": "RESUME"}
-
-#VM2 MIGRATION DONE, INFO BLOCK
-{ "execute": "human-monitor-command", "arguments": {'command-line': 'info block'} }
-{"return": "virtio0 (drive0): json:{\"backing\": {\"backing\": {\"driver\": \"qcow2\", \"file\": {\"driver\": \"file\", \"filename\": \"0.qcow2\"}}, \"driver\": \"qcow2\", \"file\": {\"driver\": \"file\", \"filename\": \"1.qcow2\"}}, \"driver\": \"qcow2\", \"file\": {\"driver\": \"file\", \"filename\": \"2.qcow2\"}} (qcow2)\r\n    Attached to:      /machine/peripheral-anon/device[0]/virtio-backend\r\n    Cache mode:       writethrough\r\n    Backing file:     json:{\"backing\": {\"driver\": \"qcow2\", \"file\": {\"driver\": \"file\", \"filename\": \"0.qcow2\"}}, \"driver\": \"qcow2\", \"file\": {\"driver\": \"file\", \"filename\": \"1.qcow2\"}} (chain depth: 2)\r\n\r\nide1-cd0: [not inserted]\r\n    Attached to:      /machine/unattached/device[24]\r\n    Removable device: not locked, tray closed\r\n\r\nfloppy0: [not inserted]\r\n    Attached to:      /machine/unattached/device[17]\r\n    Removable device: not locked, tray closed\r\n\r\nsd0: [not inserted]\r\n    Removable device: not locked, tray closed\r\n"}
-
-
-#VM2 SNAPSHOT AFTER MIGRATION
-{ "execute": "blockdev-snapshot-sync", "arguments": { "format": "qcow2", "snapshot-file": "3.qcow2", "node-name": "drive0", "snapshot-node-name": "drive0-snap" }}
-Formatting '3.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=68719476736 backing_file=json:{"backing": {"backing": {"driver": "qcow2",, "file": {"driver": "file",, "filename": "0.qcow2"}},, "driver": "qcow2",, "file": {"driver": "file",, "filename": "1.qcow2"}},, "driver": "qcow2",, "file": {"driver": "file",, "filename": "2.qcow2"}} backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
-{"return": {}}
-
-
-#VM2 INFO BLOCK AFTER SNAPSHOT
-{ "execute": "human-monitor-command", "arguments": {'command-line': 'info block'} }
-{"return": "virtio0 (drive0-snap): 3.qcow2 (qcow2)\r\n    Attached to:      /machine/peripheral-anon/device[0]/virtio-backend\r\n    Cache mode:       writethrough\r\n    Backing file:     json:{\"backing\": {\"backing\": {\"driver\": \"qcow2\", \"file\": {\"driver\": \"file\", \"filename\": \"0.qcow2\"}}, \"driver\": \"qcow2\", \"file\": {\"driver\": \"file\", \"filename\": \"1.qcow2\"}}, \"driver\": \"qcow2\", \"file\": {\"driver\": \"file\", \"filename\": \"2.qcow2\"}} (chain depth: 3)\r\n\r\nide1-cd0: [not inserted]\r\n    Attached to:      /machine/unattached/device[24]\r\n    Removable device: not locked, tray closed\r\n\r\nfloppy0: [not inserted]\r\n    Attached to:      /machine/unattached/device[17]\r\n    Removable device: not locked, tray closed\r\n\r\nsd0: [not inserted]\r\n    Removable device: not locked, tray closed\r\n"}
-
-
-
-#INFO
-/opt/qemu-7.0.0/bin/qemu-img info --backing-chain 3.qcow2
-qemu-img: Could not open 'json:{"backing": {"backing": {"driver": "qcow2", "file": {"driver": "file", "filename": "0.qcow2"}}, "driver": "qcow2", "file": {"driver": "file", "filename": "1.qcow2"}}, "driver": "qcow2", "file": {"driver": "file", "filename": "2.qcow2"}}': Block format 'qcow2' does not support the option 'backing.backing.driver'
-Additional information:
-Even if the bug is scary it's very simple to fix it
-
-/opt/qemu-7.0.0/bin/qemu-img info --backing-chain 3.qcow2
-qemu-img: Could not open 'json:{"backing": {"backing": {"driver": "qcow2", "file": {"driver": "file", "filename": "0.qcow2"}}, "driver": "qcow2", "file": {"driver": "file", "filename": "1.qcow2"}}, "driver": "qcow2", "file": {"driver": "file", "filename": "2.qcow2"}}': Block format 'qcow2' does not support the option 'backing.backing.driver'
-
-root@lenovo2:/data# /opt/qemu-7.0.0/bin/qemu-img rebase -f qcow2 -F qcow2 -u -b 2.qcow2 3.qcow2
-root@lenovo2:/data# /opt/qemu-7.0.0/bin/qemu-img info --backing-chain 3.qcow2
-image: 3.qcow2
-file format: qcow2
-virtual size: 64 GiB (68719476736 bytes)
-disk size: 24 KiB
-cluster_size: 65536
-backing file: 2.qcow2
-backing file format: qcow2
-Format specific information:
-    compat: 1.1
-    compression type: zlib
-    lazy refcounts: false
-    refcount bits: 16
-    corrupt: false
-    extended l2: false
-
-image: 2.qcow2
-file format: qcow2
-virtual size: 64 GiB (68719476736 bytes)
-disk size: 24 KiB
-cluster_size: 65536
-[..........]