pub fn parse_dev_mounts(text: &str) -> Vec<String>Expand description
WRITABLE /dev/-backed mount points from /proc/mounts, deduplicated by
source device (bind mounts and btrfs subvolumes re-list one device many
times; space is a per-DEVICE fact).
Read-only mounts are excluded, and it matters: snap images are
/dev/loop* squashfs mounts that are 100% full BY CONSTRUCTION, so one
installed snap would pin the storage item at bright-orange forever.
Verified on this host — /dev/loop0 /snap/... ro,... at 100% while the
fullest writable filesystem sat at 40%. A read-only filesystem cannot
fill up, so its fullness is not a utilization.