On Mon, Feb 19, 2024 at 02:20:20PM +1100, Keith Bainbridge wrote: [...] > I am convinced that the missing space is used by btrfs snapshot process. But > WHY is the used space reporting on my daily driver LESS than that on the > spare machine 29G vs 35G? The original install was the same .iso Ah well Perhaps because you upgrade your daily driver more often? May be because it has more packages installed? Another post of yours upthread suggests that your upgrade process roughly is: 1. take snapshot 2. upgrade Do you remove your snapshots if/after all went well? (note that I have no idea how snapshots are removed under btrfs and whether they are somehow visible to "du" -- I guess the second is a "no"). If not, the space is taken by all the files which have been overwritten in the upgrade process. More "versions", less space. Cheers -- t
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