From d46804392c36799b3bd602320909067282256ebc Mon Sep 17 00:00:00 2001 From: Aishwarya Mathuria Date: Wed, 21 Jan 2026 08:11:48 +0000 Subject: [PATCH] qa/suites/crimson-rados/thrash: Modify osd_target_transaction_size We observed in Seastore, deletion of a large batch (default osd_target_transaction_size=30) can take a significant amount of time. Because this happens inside the peering_pp.process stage, it blocks the PG's peering pipeline. During this block, any incoming OSDMap updates (PGAdvanceMap) are stalled behind the deletion work. This eventually causes a global OSD-wide map progression hang because the OSD cannot advance past an epoch until all PGs have processed it. To fix this, we are reducing osd_target_transaction_size to 5 to lower conflict rates and allow deletion transactions to complete. Fixes: https://tracker.ceph.com/issues/73791 Signed-off-by: Aishwarya Mathuria --- qa/suites/crimson-rados/thrash/thrashers/default.yaml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/qa/suites/crimson-rados/thrash/thrashers/default.yaml b/qa/suites/crimson-rados/thrash/thrashers/default.yaml index 910e1f87a9ac..3b900fca2d94 100644 --- a/qa/suites/crimson-rados/thrash/thrashers/default.yaml +++ b/qa/suites/crimson-rados/thrash/thrashers/default.yaml @@ -5,6 +5,11 @@ overrides: - objects unfound and apparently lost conf: osd: + # osd_target_transaction_size added to + # avoid https://tracker.ceph.com/issues/73791. + # we should return to the default value of + # 30 eventually (https://tracker.ceph.com/issues/74507). + osd target transaction size: 5 osd debug reject backfill probability: .3 osd scrub min interval: 60 osd scrub max interval: 120 -- 2.47.3