On Mon 28 Jun 2021 at 13:36:35 (-0700), David Christensen wrote: > I do not set the 'discard' (trim) option in fstab(5). If and when I > want to erase unused blocks (such as before taking an image), I use > fstrim(8).
Can you elaborate on a couple of things: How do you "take an image". Is this equivalent to a conventional dd if=/dev/sda …, or to some other process? When I copy an entire conventional drive or partition, all the free blocks/unused sectors are carefully transferred to the copy. What improvement does erasing unused blocks achieve? Cheers, David.
