diff --git a/tests/functional/pyocf/rio.py b/tests/functional/pyocf/rio.py
index efe345e..3b4c4b0 100644
--- a/tests/functional/pyocf/rio.py
+++ b/tests/functional/pyocf/rio.py
@@ -124,9 +124,9 @@ class Rio:
 
         def run(self):
             iogen = IoGen(
-                (self.jobspec.offset, self.jobspec.size),
+                (self.jobspec.offset, self.jobspec.size - self.jobspec.offset),
                 self.jobspec.bs,
-                self.jobspec.randseed,
+                self.jobspec.randseed + hash(self.name),
                 self.jobspec.readwrite.is_random(),
                 self.jobspec.randommap,
             )
@@ -150,7 +150,7 @@ class Rio:
 
             while not self.should_finish():
                 with self.qd_condition:
-                    self.qd_condition.wait_for(lambda: self.qd <= self.jobspec.qd)
+                    self.qd_condition.wait_for(lambda: self.qd < self.jobspec.qd)
 
                 data = Data(self.jobspec.bs)  # TODO pattern and verify
                 io = self.jobspec.target.new_io(
@@ -190,6 +190,10 @@ class Rio:
         self.global_jobspec.randommap = False
         return self
 
+    def randseed(self, seed):
+        self.global_jobspec.randseed = seed
+        return self
+
     def bs(self, bs: Size):
         self.global_jobspec.bs = bs
         return self
diff --git a/tests/functional/pyocf/types/io.py b/tests/functional/pyocf/types/io.py
index bc26d52..acc30ac 100644
--- a/tests/functional/pyocf/types/io.py
+++ b/tests/functional/pyocf/types/io.py
@@ -90,8 +90,8 @@ class Io(Structure):
         except:  # noqa E722
             pass
 
-        self.put()
         self.del_object()
+        self.put()
 
     def submit(self):
         return OcfLib.getInstance().ocf_volume_submit_io(byref(self))
diff --git a/tests/functional/tests/failover/test_standby_io.py b/tests/functional/tests/failover/test_standby_io.py
new file mode 100644
index 0000000..2d6edf9
--- /dev/null
+++ b/tests/functional/tests/failover/test_standby_io.py
@@ -0,0 +1,94 @@
+#
+# Copyright(c) 2022 Intel Corporation
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+import pytest
+from datetime import timedelta
+
+from pyocf.types.volume import RamVolume
+from pyocf.types.volume_cache import CacheVolume
+from pyocf.types.cache import Cache
+from pyocf.types.queue import Queue
+from pyocf.utils import Size
+from pyocf.types.shared import CacheLineSize
+from pyocf.types.ctx import OcfCtx
+from pyocf.rio import Rio, ReadWrite
+from pyocf.helpers import (
+    get_collision_segment_page_location,
+    get_collision_segment_size,
+)
+
+
+@pytest.mark.parametrize("cacheline_size", CacheLineSize)
+def test_test_standby_io(pyocf_ctx, cacheline_size):
+    num_jobs = 8
+    qd = 16
+    runtime = 5
+
+    vol_size = Size.from_MiB(100)
+    cache_vol = RamVolume(vol_size)
+
+    cache = Cache(owner=OcfCtx.get_default(), cache_line_size=cacheline_size)
+
+    cache.start_cache(init_default_io_queue=False)
+
+    for i in range(num_jobs):
+        cache.add_io_queue(f"io-queue-{i}")
+
+    cache.standby_attach(cache_vol)
+
+    r = (
+        Rio()
+        .target(cache)
+        .njobs(num_jobs)
+        .readwrite(ReadWrite.RANDWRITE)
+        .size(vol_size)
+        .io_size(Size.from_GiB(100))
+        .bs(Size.from_KiB(4))
+        .qd(qd)
+        .time(timedelta(seconds=runtime))
+        .time_based()
+        .run(cache.io_queues)
+    )
+
+
+@pytest.mark.parametrize("cacheline_size", CacheLineSize)
+def test_test_standby_io_metadata(pyocf_ctx, cacheline_size):
+    num_jobs = 8
+    qd = 16
+    runtime = 10
+
+    vol_size = Size.from_MiB(200)
+    cache_vol = RamVolume(vol_size)
+
+    cache = Cache(owner=OcfCtx.get_default(), cache_line_size=cacheline_size)
+
+    cache.start_cache(init_default_io_queue=False)
+
+    for i in range(num_jobs):
+        cache.add_io_queue(f"io-queue-{i}")
+
+    cache.standby_attach(cache_vol)
+
+    start = get_collision_segment_page_location(cache)
+    count = get_collision_segment_size(cache)
+    io_offset = Size.from_page(start)
+    io_size = Size.from_page(count)
+
+    cache_vol = CacheVolume(cache, open=True)
+
+    r = (
+        Rio()
+        .target(cache_vol)
+        .njobs(num_jobs)
+        .readwrite(ReadWrite.RANDWRITE)
+        .size(io_offset + io_size)
+        .bs(Size.from_KiB(16))
+        .offset(io_offset)
+        .qd(qd)
+        .time(timedelta(seconds=runtime))
+        .time_based()
+        .norandommap()
+        .run(cache.io_queues)
+    )