How to mount additional dataset in dracut?

[lekto]

Hi, I have encrypted pool and I'm using dracut as initramfs. Dracut is only mounting nas_ssd_datapool/crypt/root and then running switch_root. I also need to mount nas_ssd_datapool/crypt/log into /var/log, and I need to do it before switch_root because journald doesn't like it be mounted later. I tried to run dracut with these parameters:
--mount "nas_ssd_datapool/crypt/log /var/log zfs"
--mount "nas_ssd_datapool/crypt/log /sysroot/var/log zfs"
--mount "nas_ssd_datapool/var/log"
--mount "/var/log"
None of these are working. Right now I'm adding rd.break to kernel command line and mount it by hand. What is the correct way to do this?