I have two 512 GB mirrored SSD as the promox boot disk with ZFS, and want to reduce the root file system paritition, so I can add ZIL/SLOG for the separate ZFS data pool. This gives a great improvment, as the system SSDs are idle in most of the time anyway, so there is to conflict between promox system and SLOG/ZLOG for another ZFS pool on the same drive. I did this already by installing to a smaller disk, than adding a mirror with a larger disks, leaving free space at the end. How is it possible to reduce the rpool root partition online (remote server). E.g. removing the second mirror disk, repartition, send ZFS file systems to second disk, and somehow make proxmox boot from second disk? Any step by step instructions?