Not exactly what you're asking for, but how about:
* use ZFS (or any snapshot capable file system)
* trigger snapshots at regular (short) intervals (as chosen by you).
ZFS snapshots are very low cost, and you can browse them using your normal file tools. You could reasonably snapshot every (say) 5 minutes, but I wouldn't try every second :)
Comments
Not exactly what you're asking for, but how about:
* use ZFS (or any snapshot capable file system)
* trigger snapshots at regular (short) intervals (as chosen by you).
ZFS snapshots are very low cost, and you can browse them using your normal file tools. You could reasonably snapshot every (say) 5 minutes, but I wouldn't try every second :)