QCOW2 Converter
Converts QCOW2 disk images to other formats for virtualization, with validation and size estimation, designed for sysadmins and developers.

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About This Tool
qcow2 converter is a disk image format tool that standardizes how virtualization teams move and adapt VM images across hypervisors. It solves the problem of format incompatibility by providing a controlled path from QCOW2 to common targets such as raw and other QCOW family formats. The tool is intended for virtualization engineers, cloud operators, system administrators, and developers who need predictable conversions with metadata preservation decisions and space estimations. It emphasizes correctness, traceability, and automation readiness.
Conceptually, the tool validates inputs, maps the requested conversion to a low-level image tool (qemu-img convert), and executes the transformation with optional flags for compression or preallocation. It reports both input characteristics (size, format) and output attributes (size, format) and captures exit codes and logs for auditing. The conversion is performed server-side; no UI interactions are required beyond parameter specification.
Unique value includes explicit handling of QCOW2-specific features (snapshots, compression, lazy ref) when converting to other formats and clear guidance on what is preserved or discarded. Use cases include migrating lab images to cloud-ready raw formats, preparing VM bases for virtualization platforms like KVM or VMware, and optimizing storage footprints by using compression or preallocation strategies.
Core features cover required inputs, optional advanced flags, and quality checks: input_path, source_format, target_format, output_path, optional compression, preallocation, and size estimation. Outputs include converted_path and output_size. The tool integrates with automation pipelines via a well-defined command interface and produces verifiable results suitable for change control and audits.
How to Use
Provide inputs: input_path, source_format qcow2, target_format (raw|qcow|qcow2), output_path.
Choose options: enable compression, set preallocation, and specify alignment if needed.
Run conversion: execute the tool to perform qemu-img convert with selected options.
Review outputs: check converted_path, output_size_bytes, and any validation notes.
Verify integrity: compare checksums or file signatures if available and confirm hypervisor compatibility.

FAQs/Additional Resources
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What formats are supported for conversion?
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Is the conversion lossless?
How can I verify the converted image?
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