Yi Sun

In rhel9, before fix we'll have error: `CmdError: Command 'qemu-io -f qcow2 -c "read -vC 10485760 1048576" /dev/sdb -r -U | sed '$d'>> /dev/sdb.dump' failed.stdout: b''stderr: b"sed: couldn't write 76...

> @lento-sun some static check for spelling need to be fixed as well @chunfuwen I'm a little confused with the Failed Static checks, the log shows: ``` Run ./selftests/signedoff-check.sh **...

@dzhengfy could you pls have a check, thx

This is only a tmp fix and will be added to ci within pr-extend part for snapshot task. no need to review.

In finally(), there is code to cleanup secret, which could be removed at the same time ``` # Clean up secret if secret_uuid: virsh.secret_undefine(secret_uuid) ```