From: Jaya Prakash <jayaprakash@ibm.com>
Date: Thu, 3 Jul 2025 07:15:52 +0000 (+0000)
Subject: mon: Integrate discard queue overflow into pg health warnings
X-Git-Tag: testing/wip-vshankar-testing-20250710.130520-debug~48^2~1
X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=2e121b360c729c2bcd85850b12508e7dd767d611;p=ceph-ci.git

mon: Integrate discard queue overflow into pg health warnings

Added a health warning mechanism to monitor the discard queue for potential overload
Emits a warning if the accumulated discarded bytes in the queue exceed the configured threshold
Introduced a debugging tool to simulate slow discard operations by adding a configurable delay

Fixes : https://tracker.ceph.com/issues/69082

Signed-off-by: Jaya Prakash <jayaprakash@ibm.com>
---

diff --git a/src/mon/PGMap.cc b/src/mon/PGMap.cc
index 940b7ef9348..486e38de7f6 100644
--- a/src/mon/PGMap.cc
+++ b/src/mon/PGMap.cc
@@ -3313,6 +3313,10 @@ void PGMap::get_health_checks(
         summary += " experiencing stalled read in wal device of BlueFS";
       } else if (asum.first == "DB_DEVICE_STALLED_READ_ALERT") {
         summary += " experiencing stalled read in db device of BlueFS";
+      } else if (asum.first.find("_DISCARD_QUEUE") != std::string::npos) {
+	for (auto str : asum.second.second) {
+	  summary += str;
+	}
       }
 
       auto& d = checks->add(asum.first, HEALTH_WARN, summary, asum.second.first);