siddhantsangwan commented on code in PR #9646:
URL: https://github.com/apache/ozone/pull/9646#discussion_r2711311517
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hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/node/SCMNodeManager.java:
##########
@@ -1737,6 +1771,65 @@ public long getTotalReserved(DatanodeDetails
datanodeDetails)
return reserved;
}
+ /**
+ * Compute aggregated raw filesystem capacity/available/used for a datanode
+ * from the storage reports.
+ */
+ public FsUsageTotals getTotalFilesystemUsage(DatanodeDetails
datanodeDetails) {
+ final DatanodeInfo datanodeInfo;
+ try {
+ datanodeInfo = nodeStateManager.getNode(datanodeDetails);
+ } catch (NodeNotFoundException exception) {
+ LOG.error("Node not found when calculating fs usage for {}.",
datanodeDetails, exception);
+ return null;
+ }
+
+ long capacity = 0L;
+ long available = 0L;
+ boolean hasFsReport = false;
+ for (StorageReportProto r : datanodeInfo.getStorageReports()) {
+ if (r.hasFailed() && r.getFailed()) {
+ continue;
+ }
+ if (r.hasFsCapacity() && r.hasFsAvailable()) {
+ hasFsReport = true;
+ capacity += r.getFsCapacity();
+ available += r.getFsAvailable();
+ }
+ }
+ if (!hasFsReport) {
+ LOG.debug("Datanode {} does not have filesystem storage stats in its
storage reports.", datanodeDetails);
+ }
+ return hasFsReport ? new FsUsageTotals(capacity, available, capacity -
available) : null;
+ }
+
+ /**
+ * Simple class for grouping disk space related values.
+ */
+ public static final class FsUsageTotals {
+ private final long capacity;
+ private final long available;
+ private final long used;
+
+ private FsUsageTotals(long capacity, long available, long used) {
+ this.capacity = capacity;
+ this.available = available;
+ this.used = used;
+ }
+
+ public long getCapacity() {
+ return capacity;
+ }
+
+ public long getAvailable() {
+ return available;
+ }
+
+ public long getUsed() {
+ return used;
+ }
+ }
+
Review Comment:
Makes sense - updated.
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