On Fri, Jan 10, 2020 at 10:22:44AM +1100, Dave Chinner wrote: > Yeah, and if you add the equivalent of 'lsblk -f' then you also get > the fs UUID to identify the filesystem on the block device at a > given time.... The UUID usually already gets recorded and displayed: # lsblkj -f --until "2020-01-09 22:00:00" NAME FSTYPE FSVER LABEL UUID FSAVAIL FSUSE% MOUNTPOINT sda ├─sda1 xfs 78524ad6-6445-4bb6-840b-194871231274 ... (It's also capturing something simple for mountpoint when it can, but so far that's only visible with journalctl.) Alasdair