Docker container on VM not writing to ZFS dataset

My setup is the following: Physical host with QEMU/KVM -> VM with Docker -> rtorrent Docker container I have a ZFS pool called "main" with a dataset called "data". The "data" dataset is mounted on the VM via the virtio kernel module as suggested via this link . From here, my rtorrent Docker container has its download volume mapped to the mounted dataset on the VM: $ docker run -dt --name rtorrent-rutorrent --network=host -p 8080:80 -p 49160:49160/udp -p 49161:49161 -v /data/rtorrent:/downloads -e "NOIPV6=1" diameter/rtorrent-rutorrent:latest Here's where I'm confused: when I'm attached to the container, I can write to the dataset via touch, wget without issues. When I add a torrent to rtorrent however, nothing writes. It sits on "downloading" with no download speed. As soon as I change the container volume to point to the Docker VM local disk, everything works without issues. I've done a couple of straces on the rtorrent process (link here ) but there's not a whole lot that stands out to me here. Any input would be appreciated.