What were you trying to do that didn't work?

Attempting to migrate a VM which was kept paused after migration will crash qemu:

(qemu) qemu-kvm: ../block.c:6979: int bdrv_inactivate_recurse(BlockDriverState *): 
Assertion `!(bs->open_flags & BDRV_O_INACTIVE)' failed.
Aborted (core dumped) /usr/libexec/qemu-kvm -name 'avocado-vt-vm1' -sandbox on -blockdev '{"node-name": "file_ovmf_code", "driver": "file", "filename": "/usr/share/OVMF/OVMF_CODE.secboot.fd", "auto-read-only": true, "discard": "unmap"}' ...

as the block devices were not re-activated after migration.

See https://issues.redhat.com/browse/RHEL-48801 for more details

Per discussion with Kevin, apart from avoiding the crash, libvirt will need a new command to reactivate the block devices in order to properly use the VM afterwards, which is tracked by the aforementioned bug.

Please provide the package NVR for which bug is seen:

qemu-kvm-9.0.0-6.el9.x86_64