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diff --git a/src/ceph/src/test/test_trans.cc b/src/ceph/src/test/test_trans.cc
new file mode 100644
index 0000000..394b989
--- /dev/null
+++ b/src/ceph/src/test/test_trans.cc
@@ -0,0 +1,80 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software 
+ * Foundation.  See file COPYING.
+ * 
+ */
+
+#include <iostream>
+#include "common/ceph_argparse.h"
+#include "common/debug.h"
+#include "os/filestore/FileStore.h"
+#include "global/global_init.h"
+#include "include/assert.h"
+
+#define dout_context g_ceph_context
+#define dout_subsys ceph_subsys_filestore
+#undef dout_prefix
+#define dout_prefix *_dout
+
+struct Foo : public Thread {
+  void *entry() override {
+    dout(0) << "foo started" << dendl;
+    sleep(1);
+    dout(0) << "foo asserting 0" << dendl;
+    ceph_abort();
+  }
+} foo;
+
+int main(int argc, const char **argv)
+{
+  vector<const char*> args;
+  argv_to_vec(argc, argv, args);
+  env_to_vec(args);
+
+  auto cct = global_init(NULL, args, CEPH_ENTITY_TYPE_CLIENT,
+			 CODE_ENVIRONMENT_UTILITY, 0);
+  common_init_finish(g_ceph_context);
+
+  // args
+  if (args.size() < 2) return -1;
+  const char *filename = args[0];
+  int mb = atoi(args[1]);
+
+  cout << "#dev " << filename << std::endl;
+  cout << "#mb " << mb << std::endl;
+
+  ObjectStore *fs = new FileStore(cct.get(), filename, NULL);
+  if (fs->mount() < 0) {
+    cout << "mount failed" << std::endl;
+    return -1;
+  }
+
+  ObjectStore::Sequencer osr(__func__);
+  ObjectStore::Transaction t;
+  char buf[1 << 20];
+  bufferlist bl;
+  bl.append(buf, sizeof(buf));
+  t.create_collection(coll_t(), 0);
+
+  for (int i=0; i<mb; i++) {
+    char f[30];
+    snprintf(f, sizeof(f), "foo%d\n", i);
+    sobject_t soid(f, CEPH_NOSNAP);
+    t.write(coll_t(), ghobject_t(hobject_t(soid)), 0, bl.length(), bl);
+  }
+  
+  dout(0) << "starting thread" << dendl;
+  foo.create("foo");
+  dout(0) << "starting op" << dendl;
+  fs->apply_transaction(&osr, std::move(t));
+
+}
+