From a3cc500a543d1c2fb9e1d55c144e0a041e3d1f80 Mon Sep 17 00:00:00 2001
From: Alex Ainscow <aainscow@uk.ibm.com>
Date: Wed, 19 Nov 2025 11:32:14 +0000
Subject: [PATCH] mon: ceph pg repeer should propose a correctly sized pg temp.

Fixes: https://tracker.ceph.com/issues/73897

Signed-off-by: Alex Ainscow <aainscow@uk.ibm.com>
---
 src/mon/OSDMonitor.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/mon/OSDMonitor.cc b/src/mon/OSDMonitor.cc
index 29ceebe21061..2bc5cc100e5c 100644
--- a/src/mon/OSDMonitor.cc
+++ b/src/mon/OSDMonitor.cc
@@ -12584,6 +12584,8 @@ bool OSDMonitor::prepare_command_impl(MonOpRequestRef op,
 	goto reply_no_propose;
       }
     }
+    // Optimized EC does not cope with pg temp with a mismatched size.
+    pending_inc.new_pg_temp[pgid].resize(osdmap.get_pg_size(pgid), CRUSH_ITEM_NONE);
     goto update;
   } else if (prefix == "osd pg-upmap" ||
              prefix == "osd rm-pg-upmap" ||
-- 
2.47.3