If you are using LVM, you can use logical volume snapshot ability to achieve want you want.
BRTFS i have not used, but i did read some horror stories some time ago.
Probably nothing to worry about for home use, since those bugs were about raid protection.
ZFS in ubuntu, for instance, is openzfs (OpenZFS)
This is a mature and high quality file system & volume manager, but i would not use it for root just yet.
For data disks, i see no reason to reap the benefits of snapshots, compression and deduplication.
Just be sure those dedup tables fit in memory
Here is a quick example of LVM snapshots from my home box which is filesystem agnostic :
You need to have free space in volume group to create a snapshot, as i do, so lets create a snapshot.
We also specify that 5GB of total space in VG that can be consumed by system to maintain snapshot.
Hope that helps
Regards
Peasant.
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