I was trying to get back in time running pointing to my freenas server but it wouldnt create the folder on the remote server. Ended up just having to change the ssh user's shell to bash and everything worked! default on freenas is csh shell.

Thanks all working great!

as I understand, we have to use hfsplus formatted partition

so approximated manual might be like this:

sudo apt-get install hfsplus hfsutils hfsprogs

sudo mkdir /mnt/timemachine # provide your path to mount point

# remove/create a partition
# fdisk howto: https://www.tldp.org/HOWTO/Partition/fdisk_partitioning.html
sudo fdisk /dev/sda 

sudo mkfs.hfsplus /dev/sda1 # specify yo