ZFS on Linux is not, so much so that Oracle the company that owns it refuses to officially support it. It's a fairly well known issue.
https://www.theregister.com/2018/04/10/zfs_on_linux_data_los...
https://news.ycombinator.com/item?id=16797644
https://zfs-discuss.zfsonlinux.narkive.com/8zTNgJHA/i-have-l...