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Diffstat (limited to 'gitlab/issues/target_missing/host_missing/accel_missing/1117.toml')
| -rw-r--r-- | gitlab/issues/target_missing/host_missing/accel_missing/1117.toml | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/gitlab/issues/target_missing/host_missing/accel_missing/1117.toml b/gitlab/issues/target_missing/host_missing/accel_missing/1117.toml deleted file mode 100644 index dc321675..00000000 --- a/gitlab/issues/target_missing/host_missing/accel_missing/1117.toml +++ /dev/null @@ -1,103 +0,0 @@ -id = 1117 -title = "migration corrupts qcow2 metadata when \"backing file: json:{\" is involve" -state = "closed" -created_at = "2022-07-22T12:25:52.226Z" -closed_at = "2022-10-03T21:56:09.801Z" -labels = ["Storage"] -url = "https://gitlab.com/qemu-project/qemu/-/issues/1117" -host-os = "Debian 10, Centos 7" -host-arch = "x86" -qemu-version = "4.1.1, 7.0.0" -guest-os = "N/A" -guest-arch = "x86" -description = """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""" -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 = """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 -[..........]""" |