If you do have scripted snapshots being taken, be sure you have a script thinning down your snapshot history as well.
I know Ivan P never mentioned qgroups, but just a warning for future readers: *with qgroups don't let this script delete more than couple dozen snapshots at once*, then wait for btrfs kernel activity to subside before trying again. Especially be very careful when running this script in production the very first time, it will most likely find too many snapshots to delete. (Temporary removing all affected qgroups beforehand may also work.)
-- With Best Regards, Marat Khalili -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
