virt-sparsify
Make virtual machine drive images thin-provisioned. NOTE: Use only for offline machines to avoid data corruption. More information: https://libguestfs.org.
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Create a sparsified compressed image without snapshots from an unsparsified one:
virt-sparsify --compress {{path/to/image.qcow2}} {{path/to/image_new.qcow2}} -
Sparsify an image in-place:
virt-sparsify --in-place {{path/to/image.img}}
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