Hi,
Try -sl host1,host2 .
Example 1 didn't work because it expects to get the objects as a list.
Example 2 didn't work because you defined host1 and then defined host2. It has overwritten host1.
This is a new feature and behavior for adding backup log server will be much better soon.
I believe that as of now you can only add backup by adding it to the command and use it as one command. I think that in a few weeks, improvement will allow you to add it with a separate command.
For now, use like this: autoprov_cfg.... -sl host1, host2 -sbl backuphost1, backuphost2
In the future -sbl will run verifications behind the scenes and if a primary log server is defined in autoprov_cfg you will be able to add it via a separate command.
Kind regards, Amir Senn