From: Piotr Dałek <git@predictor.org.pl>
Date: Sun, 10 Jul 2016 00:41:34 +0000 (+0200)
Subject: test/osd: add test for fast mark down functionality
X-Git-Tag: v11.0.1~211^2~1
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=3ed8169e6ae587de9388b4ba2c5c14991fc4aa2d;p=ceph.git

test/osd: add test for fast mark down functionality

Test checks both async and simple messenger and also checks whether
disabling "osd fast fail on connection refused" option restores old
behavior.

Signed-off-by: Piotr Dałek <git@predictor.org.pl>
---

diff --git a/src/test/osd/CMakeLists.txt b/src/test/osd/CMakeLists.txt
index baf26aec810d..30d02179720f 100644
--- a/src/test/osd/CMakeLists.txt
+++ b/src/test/osd/CMakeLists.txt
@@ -25,6 +25,7 @@ add_ceph_test(osd-reactivate.sh ${CMAKE_CURRENT_SOURCE_DIR}/osd-reactivate.sh)
 add_ceph_test(osd-reuse-id.sh ${CMAKE_CURRENT_SOURCE_DIR}/osd-reuse-id.sh)
 add_ceph_test(osd-scrub-snaps.sh ${CMAKE_CURRENT_SOURCE_DIR}/osd-scrub-snaps.sh)
 add_ceph_test(osd-copy-from.sh ${CMAKE_CURRENT_SOURCE_DIR}/osd-copy-from.sh)
+add_ceph_test(osd-fast-mark-down.sh ${CMAKE_CURRENT_SOURCE_DIR}/osd-fast-mark-down.sh)
 
 # unittest_osdmap
 add_executable(unittest_osdmap
diff --git a/src/test/osd/osd-fast-mark-down.sh b/src/test/osd/osd-fast-mark-down.sh
new file mode 100755
index 000000000000..33c88b27eae8
--- /dev/null
+++ b/src/test/osd/osd-fast-mark-down.sh
@@ -0,0 +1,96 @@
+#!/bin/bash
+#
+# Copyright (C) 2016 Piotr Dałek <git@predictor.org.pl>
+# Copyright (C) 2014, 2015 Red Hat <contact@redhat.com>
+#
+# Author: Piotr Dałek <git@predictor.org.pl>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Library Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Library Public License for more details.
+#
+
+source $(dirname $0)/../detect-build-env-vars.sh
+source $CEPH_ROOT/qa/workunits/ceph-helpers.sh
+
+function run() {
+    local dir=$1
+    shift
+    rm -f $dir/*.pid
+    export CEPH_MON="127.0.0.1:7126" # git grep '\<7126\>' : there must be only one
+    export CEPH_ARGS
+    CEPH_ARGS+="--fsid=$(uuidgen) --auth-supported=none "
+    CEPH_ARGS+="--mon-host=$CEPH_MON "
+    
+    echo "Ensuring old behavior is there..."
+    test_fast_kill $dir && (echo "OSDs died too early!" ; return 1)
+
+    CEPH_ARGS+="--osd-fast-fail-on-connection-refused=true"
+    OLD_ARGS=$CEPH_ARGS
+
+    CEPH_ARGS+="--ms_type=simple"
+    echo "Testing simple msgr..."
+    test_fast_kill $dir || return 1
+
+    CEPH_ARGS=$OLD_ARGS"--ms_type=async"
+    echo "Testing async msgr..."
+    test_fast_kill $dir || return 1
+
+    return 0
+
+}
+
+function test_fast_kill() {
+   # create cluster with 3 osds
+   setup $dir || return 1
+   run_mon $dir a --osd_pool_default_size=3 || return 1
+   for oi in {0..2}; do
+     run_osd $dir $oi || return 1
+     pids[$oi]=$(cat $dir/osd.$oi.pid)
+   done
+
+   # make some objects so osds to ensure connectivity between osds
+   rados -p rbd bench 10 write -b 4096 --max-objects 128 --no-cleanup
+   sleep 1
+
+   $killid=0
+   $previd=0
+
+   # kill random osd and see if 1 sec after, the osd count decreased.
+   for i in {1..2}; do
+     while [ $killid -eq $previd ]; do
+        killid=${pids[$RANDOM%${#pids[@]}]}
+     done
+     previd=$killid
+
+     kill -9 $killid
+     sleep 1
+
+     down_osds=$(ceph osd tree | grep -c down)
+     if [ $down_osds -lt $i ]; then
+        echo Killed the OSD, yet it is not marked down
+        ceph osd tree
+        teardown $dir
+        return 1
+     elif [ $down_osds -gt $i ]; then
+        echo Too many \($down_osds\) osds died!
+        teardown $dir
+        return 1
+     fi
+     
+   done
+   pkill -SIGTERM rados
+   teardown $dir || return 1
+}
+
+main osd-fast-mark-down "$@"
+
+# Local Variables:
+# compile-command: "cd ../.. ; make -j4 && test/osd/osd-fast-mark-down.sh"
+# End: