Fix rrd4j database start time (#15277)

Signed-off-by: Jan N. Klug <github@klug.nrw>

diff --git a/bundles/org.openhab.persistence.rrd4j/src/main/java/org/openhab/persistence/rrd4j/internal/RRD4jPersistenceService.java b/bundles/org.openhab.persistence.rrd4j/src/main/java/org/openhab/persistence/rrd4j/internal/RRD4jPersistenceService.java
index 9e8ef713650254b0a36df72e7af12647d21eb4cc..4cf093965aab2fe1921d0620af9468f963a3478a 100644 (file)
--- a/bundles/org.openhab.persistence.rrd4j/src/main/java/org/openhab/persistence/rrd4j/internal/RRD4jPersistenceService.java
+++ b/bundles/org.openhab.persistence.rrd4j/src/main/java/org/openhab/persistence/rrd4j/internal/RRD4jPersistenceService.java
@@ -587,7 +587,7 @@ public class RRD4jPersistenceService implements QueryablePersistenceService {
         RrdDefConfig useRdc = getRrdDefConfig(itemName);
         if (useRdc != null) {
             rrdDef.setStep(useRdc.step);
-            rrdDef.setStartTime(System.currentTimeMillis() / 1000 - 1);
+            rrdDef.setStartTime(System.currentTimeMillis() / 1000 - useRdc.step);
             rrdDef.addDatasource(DATASOURCE_STATE, useRdc.dsType, useRdc.heartbeat, useRdc.min, useRdc.max);
             for (RrdArchiveDef rad : useRdc.archives) {
                 rrdDef.addArchive(rad.fcn, rad.xff, rad.steps, rad.rows);