How to deal with virtual directories like /proc, /run and /dev

[isZYKerman]

I plan to install my Ubuntu system as a ZFS dataset using zfsbootmenu and then take snapshots of that dataset. However, I’ve noticed that virtual directories such as /proc, /run, and /dev, which are freshly generated at each system startup, along with other transient files, are being included in the snapshots.

I’d like to ask:
1.Could including these directories in snapshots impact system restore or boot operations?
2.Is there a way to exclude these directories from being snapshot—perhaps by mounting them separately, placing them into dedicated child datasets, or using some other method?

Can anyone offer some advice on how to handle it?

[ahesford]

Mounts on top of your filesystem that are not also ZFS filesystems are not included in the snapshots.

[isZYKerman]

Sorry but I didn't quite catch that. Could you explain it in more detail?

[Charles-IX]

As you can see, in my case, System/ROOT/Ubuntu is mounted at /.
/sys /proc /dev /run etc are not part of your system pool —— they are not even zfs.
They are just MOUNTed there for the kernel to function.