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diff --git a/src/ceph/qa/standalone/osd/osd-dup.sh b/src/ceph/qa/standalone/osd/osd-dup.sh
new file mode 100755
index 0000000..bcb0fdc
--- /dev/null
+++ b/src/ceph/qa/standalone/osd/osd-dup.sh
@@ -0,0 +1,83 @@
+#!/bin/bash
+
+source $CEPH_ROOT/qa/standalone/ceph-helpers.sh
+
+[ `uname` = FreeBSD ] && exit 0
+
+function run() {
+    local dir=$1
+    shift
+
+    export CEPH_MON="127.0.0.1:7146" # git grep '\<7146\>' : there must be only one
+    export CEPH_ARGS
+    CEPH_ARGS+="--fsid=$(uuidgen) --auth-supported=none "
+    CEPH_ARGS+="--mon-host=$CEPH_MON "
+    # avoid running out of fds in rados bench
+    CEPH_ARGS+="--filestore_wbthrottle_xfs_ios_hard_limit=900 "
+    CEPH_ARGS+="--filestore_wbthrottle_btrfs_ios_hard_limit=900 "
+    local funcs=${@:-$(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 TEST_filestore_to_bluestore() {
+    local dir=$1
+
+    local flimit=$(ulimit -n)
+    if [ $flimit -lt 1536 ]; then
+        echo "Low open file limit ($flimit), test may fail. Increase to 1536 or higher and retry if that happens."
+    fi
+
+    run_mon $dir a || return 1
+    run_mgr $dir x || return 1
+    run_osd $dir 0 || return 1
+    osd_pid=$(cat $dir/osd.0.pid)
+    run_osd $dir 1 || return 1
+    run_osd $dir 2 || return 1
+
+    sleep 5
+
+    create_pool foo 16
+
+    # write some objects
+    rados bench -p foo 10 write -b 4096 --no-cleanup || return 1
+
+    # kill
+    while kill $osd_pid; do sleep 1 ; done
+    ceph osd down 0
+
+    mv $dir/0 $dir/0.old || return 1
+    mkdir $dir/0 || return 1
+    ofsid=$(cat $dir/0.old/fsid)
+    echo "osd fsid $ofsid"
+    O=$CEPH_ARGS
+    CEPH_ARGS+="--log-file $dir/cot.log --log-max-recent 0 "
+    ceph-objectstore-tool --type bluestore --data-path $dir/0 --fsid $ofsid \
+			  --op mkfs || return 1
+    ceph-objectstore-tool --data-path $dir/0.old --target-data-path $dir/0 \
+			  --op dup || return 1
+    CEPH_ARGS=$O
+
+    run_osd_bluestore $dir 0 || return 1
+
+    while ! ceph osd stat | grep '3 up' ; do sleep 1 ; done
+    ceph osd metadata 0 | grep bluestore || return 1
+
+    ceph osd scrub 0
+
+    # give it some time
+    sleep 15
+    # and make sure mon is sync'ed
+    flush_pg_stats
+
+    wait_for_clean || return 1
+}
+
+main osd-dup "$@"
+
+# Local Variables:
+# compile-command: "cd ../.. ; make -j4 && test/osd/osd-dup.sh"
+# End: