munin/tahoe_diskusage: clip the graph at zero, to prevent transient negative excursio...

diff --git a/misc/munin/tahoe_diskusage b/misc/munin/tahoe_diskusage
index 54daf76605ffc5720489e0f9c54344ef453f239e..80b9df6ce7fd399b7e07d925b71eb8df837b3609 100644 (file)
--- a/misc/munin/tahoe_diskusage
+++ b/misc/munin/tahoe_diskusage
@@ -13,6 +13,7 @@ graph_title Tahoe Disk Usage Measurement
 graph_vlabel bytes per second
 graph_category tahoe
 graph_info This graph shows the estimated disk usage per unit time, totalled across all storage servers
+graph_args --lower-limit 0 --rigid
 rate_1hr.label (one hour sample)
 rate_1hr.draw LINE1
 rate_1day.label (one day sample)