From f978b27d2b209e1775c6f97ccfc64ac4334cd5c9 Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@redhat.com>
Date: Mon, 11 Mar 2019 17:10:28 -0500
Subject: [PATCH] qa/standalone/osd/pg-split-merge.sh: reproduce pg merge
 problem with empty pgs

This reproduces http://tracker.ceph.com/issues/38655

Signed-off-by: Sage Weil <sage@redhat.com>
---
 qa/standalone/osd/pg-split-merge.sh | 57 +++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

diff --git a/qa/standalone/osd/pg-split-merge.sh b/qa/standalone/osd/pg-split-merge.sh
index 11d1c438743..97583da048b 100755
--- a/qa/standalone/osd/pg-split-merge.sh
+++ b/qa/standalone/osd/pg-split-merge.sh
@@ -16,6 +16,63 @@ function run() {
     done
 }
 
+function TEST_a_merge_empty() {
+    local dir=$1
+
+    setup $dir || return 1
+    run_mon $dir a --osd_pool_default_size=3 || return 1
+    run_mgr $dir x || return 1
+    run_osd $dir 0 || return 1
+    run_osd $dir 1 || return 1
+    run_osd $dir 2 || return 1
+
+    ceph osd pool create foo 2 || return 1
+    ceph osd pool set foo pgp_num 1 || return 1
+
+    wait_for_clean || return 1
+
+    # note: we need 1.0 to have the same or more objects than 1.1
+    #  1.1
+    rados -p foo put foo1 /etc/passwd
+    rados -p foo put foo2 /etc/passwd
+    rados -p foo put foo3 /etc/passwd
+    rados -p foo put foo4 /etc/passwd
+    #  1.0
+    rados -p foo put foo5 /etc/passwd
+    rados -p foo put foo6 /etc/passwd
+    rados -p foo put foo8 /etc/passwd
+    rados -p foo put foo10 /etc/passwd
+    rados -p foo put foo11 /etc/passwd
+    rados -p foo put foo12 /etc/passwd
+    rados -p foo put foo16 /etc/passwd
+
+    wait_for_clean || return 1
+
+    ceph tell osd.1 config set osd_debug_no_purge_strays true
+    ceph osd pool set foo size 2 || return 1
+    wait_for_clean || return 1
+
+    kill_daemons $dir TERM osd.2 || return 1
+    ceph-objectstore-tool --data-path $dir/2 --op remove --pgid 1.1 --force || return 1
+    activate_osd $dir 2 || return 1
+
+    wait_for_clean || return 1
+
+    # now 1.0 is there but 1.1 is not
+    ceph tell osd.2 config set osd_debug_no_acting_change true
+    ceph osd out 0 1
+    ceph osd pool set foo pg_num 1
+    sleep 5
+    ceph tell osd.2 config set osd_debug_no_acting_change false
+    ceph osd in 0 1
+    ceph osd pool set foo size 3
+
+    wait_for_clean || return 1
+    ceph pg scrub 1.0
+    sleep 5
+    ceph -s | grep inconsistent || return 1
+}
+
 function TEST_import_after_merge_and_gap() {
     local dir=$1
 
-- 
2.39.5