libvirt/tests/qemublocktestdata/imagecreate/qcow2-backing-qcow2-slice.json
Peter Krempa 7ba2208add qemuBlockGetBackingStoreString: Add extra wrapping object to JSON strings
QEMU requires an extra wrapper object where only the "file" member is
populated. This is basically a placeholder for establishing the format
layer. We did the same in qemuDiskSourceGetProps for the old-school
JSON usage with -drive but forgot to adopt this for -blockdev.

https://bugzilla.redhat.com/show_bug.cgi?id=1804617

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-03-24 14:17:47 +01:00

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JSON

protocol:
{
"driver": "file",
"filename": "/var/lib/libvirt/images/i.qcow2",
"size": 4294967296
}
format:
{
"driver": "qcow2",
"file": "0123456789ABCDEF0123456789ABCDE",
"size": 8589934590,
"backing-file": "json:{\"file\":{\"driver\":\"raw\",\"offset\":1234,\"size\":5768,\"file\":{\"driver\":\"file\",\"filename\":\"/var/lib/libvirt/images/i.qcow2\"}}}",
"backing-fmt": "qcow2"
}