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Failed to get shared "write" lock with 'qemu-img info'
When running 'qemu-img info test.qcow2' while test.qcow2 is currently used by a Qemu process, I get the error
qemu-img: Could not open 'test.qcow2': Failed to get shared "write" lock.
Why does displaying information about a disk image need a write lock for the file?
Steps to reproduce:
qemu-img create -f qcow2 test.qcow2 10M
qemu-system-x86_64 -nographic -drive file=test.qcow2
qemu-img info test.qcow2
The above was tested with Qemu version 2.10.0
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