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+Periodic fstrim for SSD disks
+-----------------------------
+
+fstrim(8) is used on a mounted filesystem to discard blocks which are not in
+use by the filesystem. This is useful in particular for solid-state drives
+(SSDs).
+
+A systemd service and matching timer is available to periodically perform
+fstrim on relevant filesystems, but is *not* enabled by default. To enable it
+according to the default weekly cadence, just do the following as root:
+
+ systemctl enable fstrim.timer