From 192f6ca079bd92f379b01894fa9e537d9d45aeea Mon Sep 17 00:00:00 2001
From: Ilya Dryomov <idryomov@gmail.com>
Date: Mon, 24 Apr 2017 15:31:53 +0200
Subject: [PATCH] qa/workunits/rbd: test exclusive map option

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
---
 .../tasks/krbd_exclusive_option.yaml          |   5 +
 qa/workunits/rbd/krbd_exclusive_option.sh     | 165 ++++++++++++++++++
 2 files changed, 170 insertions(+)
 create mode 100644 qa/suites/krbd/rbd-nomount/tasks/krbd_exclusive_option.yaml
 create mode 100755 qa/workunits/rbd/krbd_exclusive_option.sh

diff --git a/qa/suites/krbd/rbd-nomount/tasks/krbd_exclusive_option.yaml b/qa/suites/krbd/rbd-nomount/tasks/krbd_exclusive_option.yaml
new file mode 100644
index 00000000000..567deebfdb7
--- /dev/null
+++ b/qa/suites/krbd/rbd-nomount/tasks/krbd_exclusive_option.yaml
@@ -0,0 +1,5 @@
+tasks:
+- workunit:
+    clients:
+      all:
+        - rbd/krbd_exclusive_option.sh
diff --git a/qa/workunits/rbd/krbd_exclusive_option.sh b/qa/workunits/rbd/krbd_exclusive_option.sh
new file mode 100755
index 00000000000..958aecf7325
--- /dev/null
+++ b/qa/workunits/rbd/krbd_exclusive_option.sh
@@ -0,0 +1,165 @@
+#!/bin/bash
+
+set -ex
+
+function expect_false() {
+    if "$@"; then return 1; else return 0; fi
+}
+
+function assert_locked() {
+    local dev_id="${1#/dev/rbd}"
+
+    local client_addr
+    client_addr="$(< $SYSFS_DIR/$dev_id/client_addr)"
+
+    local client_id
+    client_id="$(< $SYSFS_DIR/$dev_id/client_id)"
+    # client4324 -> client.4324
+    client_id="client.${client_id#client}"
+
+    local watch_cookie
+    watch_cookie="$(rados -p rbd listwatchers rbd_header.$IMAGE_ID |
+        grep $client_id | cut -d ' ' -f 3 | cut -d '=' -f 2)"
+    [[ $(echo -n "$watch_cookie" | grep -c '^') -eq 1 ]]
+
+    local actual
+    actual="$(rados -p rbd --format=json lock info rbd_header.$IMAGE_ID rbd_lock |
+        python -m json.tool)"
+
+    local expected
+    expected="$(cat <<EOF | python -m json.tool
+{
+    "lockers": [
+        {
+            "addr": "$client_addr",
+            "cookie": "auto $watch_cookie",
+            "description": "",
+            "expiration": "0.000000",
+            "name": "$client_id"
+        }
+    ],
+    "name": "rbd_lock",
+    "tag": "internal",
+    "type": "exclusive"
+}
+EOF
+    )"
+
+    [ "$actual" = "$expected" ]
+}
+
+function assert_unlocked() {
+    rados -p rbd --format=json lock info rbd_header.$IMAGE_ID rbd_lock |
+        grep '"lockers":\[\]'
+}
+
+SYSFS_DIR="/sys/bus/rbd/devices"
+IMAGE_NAME="exclusive-option-test"
+
+rbd create --size 1 --image-feature '' $IMAGE_NAME
+
+IMAGE_ID="$(rbd info --format=json $IMAGE_NAME |
+    python -c "import sys, json; print json.load(sys.stdin)['block_name_prefix'].split('.')[1]")"
+
+DEV=$(sudo rbd map $IMAGE_NAME)
+assert_unlocked
+sudo rbd unmap $DEV
+assert_unlocked
+
+expect_false sudo rbd map -o exclusive $IMAGE_NAME
+assert_unlocked
+
+rbd feature enable $IMAGE_NAME exclusive-lock
+rbd snap create $IMAGE_NAME@snap
+
+DEV=$(sudo rbd map $IMAGE_NAME)
+assert_unlocked
+sudo rbd unmap $DEV
+assert_unlocked
+
+DEV=$(sudo rbd map -o exclusive $IMAGE_NAME)
+assert_locked $DEV
+[[ $(blockdev --getro $DEV) -eq 0 ]]
+sudo rbd unmap $DEV
+assert_unlocked
+
+DEV=$(sudo rbd map -o exclusive $IMAGE_NAME@snap)
+assert_locked $DEV
+[[ $(blockdev --getro $DEV) -eq 1 ]]
+sudo rbd unmap $DEV
+assert_unlocked
+
+DEV=$(sudo rbd map -o exclusive,ro $IMAGE_NAME)
+assert_locked $DEV
+[[ $(blockdev --getro $DEV) -eq 1 ]]
+sudo rbd unmap $DEV
+assert_unlocked
+
+# alternate syntax
+DEV=$(sudo rbd map --exclusive --read-only $IMAGE_NAME)
+assert_locked $DEV
+[[ $(blockdev --getro $DEV) -eq 1 ]]
+sudo rbd unmap $DEV
+assert_unlocked
+
+DEV=$(sudo rbd map $IMAGE_NAME)
+assert_unlocked
+dd if=/dev/urandom of=$DEV bs=4k count=10 oflag=direct
+assert_locked $DEV
+OTHER_DEV=$(sudo rbd map -o noshare,exclusive $IMAGE_NAME)
+assert_locked $OTHER_DEV
+sudo rbd unmap $DEV
+sudo rbd unmap $OTHER_DEV
+assert_unlocked
+
+DEV=$(sudo rbd map -o exclusive $IMAGE_NAME)
+assert_locked $DEV
+expect_false sudo rbd map -o noshare,exclusive $IMAGE_NAME
+assert_locked $DEV
+sudo rbd unmap $DEV
+assert_unlocked
+
+DEV=$(sudo rbd map -o exclusive $IMAGE_NAME)
+assert_locked $DEV
+OTHER_DEV=$(sudo rbd map -o noshare $IMAGE_NAME)
+dd if=/dev/urandom of=$OTHER_DEV bs=4k count=10 oflag=direct &
+PID=$!
+sleep 20
+assert_locked $DEV
+[ "$(ps -o stat= $PID)" = "D" ]
+sudo rbd unmap $DEV
+wait $PID
+assert_locked $OTHER_DEV
+sudo rbd unmap $OTHER_DEV
+assert_unlocked
+
+DEV=$(sudo rbd map -o exclusive $IMAGE_NAME)
+assert_locked $DEV
+sudo rbd map -o noshare,lock_on_read $IMAGE_NAME &
+SUDO_PID=$!
+sleep 20
+assert_locked $DEV
+PID="$(ps -o pid= --ppid $SUDO_PID)"
+[ "$(ps -o stat= $PID)" = "Dl" ]
+sudo rbd unmap $DEV
+wait $SUDO_PID
+assert_locked $OTHER_DEV
+sudo rbd unmap $OTHER_DEV
+assert_unlocked
+
+# induce a watch error after 30 seconds
+DEV=$(sudo rbd map -o exclusive,osdkeepalive=60 $IMAGE_NAME)
+assert_locked $DEV
+OLD_WATCHER="$(rados -p rbd listwatchers rbd_header.$IMAGE_ID)"
+sleep 40
+assert_locked $DEV
+NEW_WATCHER="$(rados -p rbd listwatchers rbd_header.$IMAGE_ID)"
+# same client_id, old cookie < new cookie
+[ "$(echo "$OLD_WATCHER" | cut -d ' ' -f 2)" = \
+    "$(echo "$NEW_WATCHER" | cut -d ' ' -f 2)" ]
+[[ $(echo "$OLD_WATCHER" | cut -d ' ' -f 3 | cut -d '=' -f 2) -lt \
+    $(echo "$NEW_WATCHER" | cut -d ' ' -f 3 | cut -d '=' -f 2) ]]
+sudo rbd unmap $DEV
+assert_unlocked
+
+echo OK
-- 
2.47.3