crush: device classes mini cluster sanity check

Run a mini cluster and verify that modifying the crushmap,
sending it to the cluster produces the intended effect.

Refs: http://tracker.ceph.com/issues/18943

Signed-off-by: Loic Dachary <ldachary@redhat.com>

diff --git a/src/test/crush/CMakeLists.txt b/src/test/crush/CMakeLists.txt
index f59237775b39d951553dd820b008ef3ccb89dbd8..e6159c9ace825ee430f544a73f4a56b0d5e20bc6 100644 (file)
--- a/src/test/crush/CMakeLists.txt
+++ b/src/test/crush/CMakeLists.txt
@@ -14,3 +14,4 @@ add_ceph_unittest(unittest_crush ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/unittest_crus
 target_link_libraries(unittest_crush global m ${BLKID_LIBRARIES})
 
 add_ceph_test(crush_weights.sh ${CMAKE_CURRENT_SOURCE_DIR}/crush_weights.sh)
+add_ceph_test(crush-classes.sh ${CMAKE_CURRENT_SOURCE_DIR}/crush-classes.sh)

diff --git a/src/test/crush/crush-classes.sh b/src/test/crush/crush-classes.sh
new file mode 100755 (executable)
index 0000000..d1758f7
--- /dev/null
+++ b/src/test/crush/crush-classes.sh
@@ -0,0 +1,113 @@
+#!/bin/bash
+#
+# Copyright (C) 2017 Red Hat <contact@redhat.com>
+#
+# Author: Loic Dachary <loic@dachary.org>
+#
+# 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=$1
+    shift
+
+    export CEPH_MON="127.0.0.1:7127" # git grep '\<7127\>' : there must be only one
+    export CEPH_ARGS
+    CEPH_ARGS+="--fsid=$(uuidgen) --auth-supported=none "
+    CEPH_ARGS+="--mon-host=$CEPH_MON "
+
+    local funcs=${@:-$(set | sed -n -e 's/^\(TEST_[0-9a-z_]*\) .*/\1/p')}
+    for func in $funcs ; do
+        setup $dir || return 1
+        $func $dir || return 1
+        teardown $dir || return 1
+    done
+}
+
+function add_something() {
+    local dir=$1
+    local obj=${2:-SOMETHING}
+
+    local payload=ABCDEF
+    echo $payload > $dir/ORIGINAL
+    rados --pool rbd put $obj $dir/ORIGINAL || return 1
+}
+
+function get_osds_up() {
+    local poolname=$1
+    local objectname=$2
+
+    local osds=$(ceph --format xml osd map $poolname $objectname 2>/dev/null | \
+        $XMLSTARLET sel -t -m "//up/osd" -v . -o ' ')
+    # get rid of the trailing space
+    echo $osds
+}
+
+function TEST_classes() {
+    local dir=$1
+
+    run_mon $dir a || return 1
+    run_osd $dir 0 || return 1
+    run_osd $dir 1 || return 1
+    run_osd $dir 2 || return 1
+
+    test "$(get_osds_up rbd SOMETHING)" == "1 2 0" || return 1
+    add_something $dir SOMETHING || return 1
+
+    #
+    # osd.0 has class ssd and the rule is modified
+    # to only take ssd devices.
+    #
+    ceph osd getcrushmap > $dir/map || return 1
+    crushtool -d $dir/map -o $dir/map.txt || return 1
+    sed -i \
+        -e '/device 0 osd.0/s/$/ class ssd/' \
+        -e '/step take default/s/$/ class ssd/' \
+        $dir/map.txt || return 1
+    crushtool -c $dir/map.txt -o $dir/map-new || return 1
+    ceph osd setcrushmap -i $dir/map-new || return 1
+
+    #
+    # There can only be one mapping since there only is
+    # one device with ssd class.
+    #
+    ok=false
+    for delay in 2 4 8 16 32 64 128 256 ; do
+        if test "$(get_osds_up rbd SOMETHING_ELSE)" == "0" ; then
+            ok=true
+            break
+        fi
+        sleep $delay
+        ceph osd dump # for debugging purposes
+        ceph pg dump # for debugging purposes        
+    done
+    $ok || return 1
+    #
+    # Writing keeps working because the pool is min_size 1 by
+    # default.
+    #
+    add_something $dir SOMETHING_ELSE || return 1
+
+    #
+    # Sanity check that the rule indeed has ssd
+    # generated bucket with a name including ~ssd.
+    #
+    ceph osd crush dump | grep -q '~ssd' || return 1
+}
+
+main crush-classes "$@"
+
+# Local Variables:
+# compile-command: "cd ../../../build ; ln -sf ../src/ceph-disk/ceph_disk/main.py bin/ceph-disk && make -j4 && ../src/test/crush/crush-classes.sh"
+# End: