From: Zhiqiang Wang <zhiqiang.wang@intel.com>
Date: Wed, 15 Apr 2015 14:40:47 +0000 (+0800)
Subject: test/tier: add test for cache_pin
X-Git-Tag: v10.0.0~62^2~2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=59d0de7c54f5b91009f5a9e9fad23ecaeb842a9e;p=ceph.git

test/tier: add test for cache_pin

Signed-off-by: Zhiqiang Wang <zhiqiang.wang@intel.com>
---

diff --git a/src/test/librados/tier.cc b/src/test/librados/tier.cc
index b6a6b24dca30..6c665d149cc5 100644
--- a/src/test/librados/tier.cc
+++ b/src/test/librados/tier.cc
@@ -2543,6 +2543,157 @@ TEST_F(LibRadosTwoPoolsPP, ProxyRead) {
   cluster.wait_for_latest_osdmap();
 }
 
+TEST_F(LibRadosTwoPoolsPP, CachePin) {
+  // create object
+  {
+    bufferlist bl;
+    bl.append("hi there");
+    ObjectWriteOperation op;
+    op.write_full(bl);
+    ASSERT_EQ(0, ioctx.operate("foo", &op));
+  }
+  {
+    bufferlist bl;
+    bl.append("hi there");
+    ObjectWriteOperation op;
+    op.write_full(bl);
+    ASSERT_EQ(0, ioctx.operate("bar", &op));
+  }
+  {
+    bufferlist bl;
+    bl.append("hi there");
+    ObjectWriteOperation op;
+    op.write_full(bl);
+    ASSERT_EQ(0, ioctx.operate("baz", &op));
+  }
+  {
+    bufferlist bl;
+    bl.append("hi there");
+    ObjectWriteOperation op;
+    op.write_full(bl);
+    ASSERT_EQ(0, ioctx.operate("bam", &op));
+  }
+
+  // configure cache
+  bufferlist inbl;
+  ASSERT_EQ(0, cluster.mon_command(
+    "{\"prefix\": \"osd tier add\", \"pool\": \"" + pool_name +
+    "\", \"tierpool\": \"" + cache_pool_name +
+    "\", \"force_nonempty\": \"--force-nonempty\" }",
+    inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+    "{\"prefix\": \"osd tier set-overlay\", \"pool\": \"" + pool_name +
+    "\", \"overlaypool\": \"" + cache_pool_name + "\"}",
+    inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+    "{\"prefix\": \"osd tier cache-mode\", \"pool\": \"" + cache_pool_name +
+    "\", \"mode\": \"writeback\"}",
+    inbl, NULL, NULL));
+
+  // wait for maps to settle
+  cluster.wait_for_latest_osdmap();
+
+  // read, trigger promote
+  {
+    bufferlist bl;
+    ASSERT_EQ(1, ioctx.read("foo", bl, 1, 0));
+    ASSERT_EQ(1, ioctx.read("bar", bl, 1, 0));
+    ASSERT_EQ(1, ioctx.read("baz", bl, 1, 0));
+    ASSERT_EQ(1, ioctx.read("bam", bl, 1, 0));
+  }
+
+  // verify the objects are present in the cache tier
+  {
+    NObjectIterator it = cache_ioctx.nobjects_begin();
+    ASSERT_TRUE(it != cache_ioctx.nobjects_end());
+    for (uint32_t i = 0; i < 4; i++) {
+      ASSERT_TRUE(it->get_oid() == string("foo") ||
+                  it->get_oid() == string("bar") ||
+                  it->get_oid() == string("baz") ||
+                  it->get_oid() == string("bam"));
+      ++it;
+    }
+    ASSERT_TRUE(it == cache_ioctx.nobjects_end());
+  }
+
+  // pin objects
+  {
+    ObjectWriteOperation op;
+    op.cache_pin();
+    librados::AioCompletion *completion = cluster.aio_create_completion();
+    ASSERT_EQ(0, cache_ioctx.aio_operate("foo", completion, &op));
+    completion->wait_for_safe();
+    ASSERT_EQ(0, completion->get_return_value());
+    completion->release();
+  }
+  {
+    ObjectWriteOperation op;
+    op.cache_pin();
+    librados::AioCompletion *completion = cluster.aio_create_completion();
+    ASSERT_EQ(0, cache_ioctx.aio_operate("baz", completion, &op));
+    completion->wait_for_safe();
+    ASSERT_EQ(0, completion->get_return_value());
+    completion->release();
+  }
+
+  // enable agent
+  ASSERT_EQ(0, cluster.mon_command(
+    set_pool_str(cache_pool_name, "hit_set_count", 2),
+    inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+    set_pool_str(cache_pool_name, "hit_set_period", 600),
+    inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+    set_pool_str(cache_pool_name, "hit_set_type", "bloom"),
+    inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+    set_pool_str(cache_pool_name, "min_read_recency_for_promote", 1),
+    inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+    set_pool_str(cache_pool_name, "target_max_objects", 1),
+    inbl, NULL, NULL));
+
+  sleep(10);
+
+  // Verify the pinned object 'foo' is not flushed/evicted
+  uint32_t count = 0;
+  while (true) {
+    bufferlist bl;
+    ASSERT_EQ(1, ioctx.read("baz", bl, 1, 0));
+
+    count = 0;
+    NObjectIterator it = cache_ioctx.nobjects_begin();
+    while (it != cache_ioctx.nobjects_end()) {
+      ASSERT_TRUE(it->get_oid() == string("foo") ||
+                  it->get_oid() == string("bar") ||
+                  it->get_oid() == string("baz") ||
+                  it->get_oid() == string("bam"));
+      ++count;
+      ++it;
+    }
+    if (count == 2) {
+      ASSERT_TRUE(it->get_oid() == string("foo") ||
+                  it->get_oid() == string("baz"));
+      break;
+    }
+
+    sleep(1);
+  }
+
+  // tear down tiers
+  ASSERT_EQ(0, cluster.mon_command(
+    "{\"prefix\": \"osd tier remove-overlay\", \"pool\": \"" + pool_name +
+    "\"}",
+    inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+    "{\"prefix\": \"osd tier remove\", \"pool\": \"" + pool_name +
+    "\", \"tierpool\": \"" + cache_pool_name + "\"}",
+    inbl, NULL, NULL));
+
+  // wait for maps to settle before next test
+  cluster.wait_for_latest_osdmap();
+}
+
 class LibRadosTwoPoolsECPP : public RadosTestECPP
 {
 public:
@@ -4722,6 +4873,157 @@ TEST_F(LibRadosTwoPoolsECPP, ProxyRead) {
   cluster.wait_for_latest_osdmap();
 }
 
+TEST_F(LibRadosTwoPoolsECPP, CachePin) {
+  // create object
+  {
+    bufferlist bl;
+    bl.append("hi there");
+    ObjectWriteOperation op;
+    op.write_full(bl);
+    ASSERT_EQ(0, ioctx.operate("foo", &op));
+  }
+  {
+    bufferlist bl;
+    bl.append("hi there");
+    ObjectWriteOperation op;
+    op.write_full(bl);
+    ASSERT_EQ(0, ioctx.operate("bar", &op));
+  }
+  {
+    bufferlist bl;
+    bl.append("hi there");
+    ObjectWriteOperation op;
+    op.write_full(bl);
+    ASSERT_EQ(0, ioctx.operate("baz", &op));
+  }
+  {
+    bufferlist bl;
+    bl.append("hi there");
+    ObjectWriteOperation op;
+    op.write_full(bl);
+    ASSERT_EQ(0, ioctx.operate("bam", &op));
+  }
+
+  // configure cache
+  bufferlist inbl;
+  ASSERT_EQ(0, cluster.mon_command(
+    "{\"prefix\": \"osd tier add\", \"pool\": \"" + pool_name +
+    "\", \"tierpool\": \"" + cache_pool_name +
+    "\", \"force_nonempty\": \"--force-nonempty\" }",
+    inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+    "{\"prefix\": \"osd tier set-overlay\", \"pool\": \"" + pool_name +
+    "\", \"overlaypool\": \"" + cache_pool_name + "\"}",
+    inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+    "{\"prefix\": \"osd tier cache-mode\", \"pool\": \"" + cache_pool_name +
+    "\", \"mode\": \"writeback\"}",
+    inbl, NULL, NULL));
+
+  // wait for maps to settle
+  cluster.wait_for_latest_osdmap();
+
+  // read, trigger promote
+  {
+    bufferlist bl;
+    ASSERT_EQ(1, ioctx.read("foo", bl, 1, 0));
+    ASSERT_EQ(1, ioctx.read("bar", bl, 1, 0));
+    ASSERT_EQ(1, ioctx.read("baz", bl, 1, 0));
+    ASSERT_EQ(1, ioctx.read("bam", bl, 1, 0));
+  }
+
+  // verify the objects are present in the cache tier
+  {
+    NObjectIterator it = cache_ioctx.nobjects_begin();
+    ASSERT_TRUE(it != cache_ioctx.nobjects_end());
+    for (uint32_t i = 0; i < 4; i++) {
+      ASSERT_TRUE(it->get_oid() == string("foo") ||
+                  it->get_oid() == string("bar") ||
+                  it->get_oid() == string("baz") ||
+                  it->get_oid() == string("bam"));
+      ++it;
+    }
+    ASSERT_TRUE(it == cache_ioctx.nobjects_end());
+  }
+
+  // pin objects
+  {
+    ObjectWriteOperation op;
+    op.cache_pin();
+    librados::AioCompletion *completion = cluster.aio_create_completion();
+    ASSERT_EQ(0, cache_ioctx.aio_operate("foo", completion, &op));
+    completion->wait_for_safe();
+    ASSERT_EQ(0, completion->get_return_value());
+    completion->release();
+  }
+  {
+    ObjectWriteOperation op;
+    op.cache_pin();
+    librados::AioCompletion *completion = cluster.aio_create_completion();
+    ASSERT_EQ(0, cache_ioctx.aio_operate("baz", completion, &op));
+    completion->wait_for_safe();
+    ASSERT_EQ(0, completion->get_return_value());
+    completion->release();
+  }
+
+  // enable agent
+  ASSERT_EQ(0, cluster.mon_command(
+    set_pool_str(cache_pool_name, "hit_set_count", 2),
+    inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+    set_pool_str(cache_pool_name, "hit_set_period", 600),
+    inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+    set_pool_str(cache_pool_name, "hit_set_type", "bloom"),
+    inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+    set_pool_str(cache_pool_name, "min_read_recency_for_promote", 1),
+    inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+    set_pool_str(cache_pool_name, "target_max_objects", 1),
+    inbl, NULL, NULL));
+
+  sleep(10);
+
+  // Verify the pinned object 'foo' is not flushed/evicted
+  uint32_t count = 0;
+  while (true) {
+    bufferlist bl;
+    ASSERT_EQ(1, ioctx.read("baz", bl, 1, 0));
+
+    count = 0;
+    NObjectIterator it = cache_ioctx.nobjects_begin();
+    while (it != cache_ioctx.nobjects_end()) {
+      ASSERT_TRUE(it->get_oid() == string("foo") ||
+                  it->get_oid() == string("bar") ||
+                  it->get_oid() == string("baz") ||
+                  it->get_oid() == string("bam"));
+      ++count;
+      ++it;
+    }
+    if (count == 2) {
+      ASSERT_TRUE(it->get_oid() == string("foo") ||
+                  it->get_oid() == string("baz"));
+      break;
+    }
+
+    sleep(1);
+  }
+
+  // tear down tiers
+  ASSERT_EQ(0, cluster.mon_command(
+    "{\"prefix\": \"osd tier remove-overlay\", \"pool\": \"" + pool_name +
+    "\"}",
+    inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+    "{\"prefix\": \"osd tier remove\", \"pool\": \"" + pool_name +
+    "\", \"tierpool\": \"" + cache_pool_name + "\"}",
+    inbl, NULL, NULL));
+
+  // wait for maps to settle before next test
+  cluster.wait_for_latest_osdmap();
+}
+
 int main(int argc, char **argv)
 {
   ::testing::InitGoogleTest(&argc, argv);