From: Sage Weil <sage@redhat.com>
Date: Wed, 29 Nov 2017 22:56:38 +0000 (-0600)
Subject: osd/PG: flush osr before listing scrub objects
X-Git-Tag: v13.0.2~494^2~6
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=dca1257ab13e7871f25ef1c8179e45c199b252f7;p=ceph-ci.git

osd/PG: flush osr before listing scrub objects

We need to make sure previous transactions are readable before we list
objects.  This avoids races like, say,

- ecbackend rolls forward and removes a rollback object
- bluestore delays the txn apply due to some prior op
- scrub lists objects, sees rollback object it doesn't expect

Signed-off-by: Sage Weil <sage@redhat.com>
---

diff --git a/src/osd/PG.cc b/src/osd/PG.cc
index cffa6319673..ad6faf00c10 100644
--- a/src/osd/PG.cc
+++ b/src/osd/PG.cc
@@ -4204,6 +4204,8 @@ int PG::build_scrub_map_chunk(
 
   map.valid_through = info.last_update;
 
+  osr->flush();
+
   // objects
   vector<hobject_t> ls;
   vector<ghobject_t> rollback_obs;