Have your backup cron job call fstrim once everything is safely backed up?
Well, yes, but that's beside the point.What I really wanted to stress was that mounting an SSD-backed filesystem with "discard" has effects on the ability to recover deleted data.
Normally it's not a problem, but shit happens -- and when it happens on such a filesystem don't waste time with recovery tools, as all you'll get back are files full of 0xFFs.
andrea
