From: myoungwon oh <ohmyoungwon@gmail.com>
Date: Fri, 9 Oct 2020 14:57:22 +0000 (+0900)
Subject: test: add tier_flush tests
X-Git-Tag: v16.1.0~374^2~34
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=1b958f4795fc91a6d8d9ccc59dacc8f0112c7ec0;p=ceph.git

test: add tier_flush tests

1. Flush and read data
2. Flush snapshotted object

Signed-off-by: Myoungwon Oh <myoungwon.oh@samsumg.com>
---

diff --git a/src/common/CDC.cc b/src/common/CDC.cc
index 69cb978278f..e478ba46e51 100644
--- a/src/common/CDC.cc
+++ b/src/common/CDC.cc
@@ -20,3 +20,26 @@ std::unique_ptr<CDC> CDC::create(
   }
   return nullptr;
 }
+
+void generate_buffer(int size, bufferlist *outbl, int seed)
+{
+  std::mt19937_64 engine, engine2;
+  engine.seed(seed);
+  engine2.seed(seed);
+
+  // assemble from randomly-sized segments!
+  outbl->clear();
+  auto left = size;
+  while (left) {
+    size_t l = std::min<size_t>((engine2() & 0xffff0) + 16, left);
+    left -= l;
+    bufferptr p(l);
+    p.set_length(l);
+    char *b = p.c_str();
+    for (size_t i = 0; i < l / sizeof(uint64_t); ++i) {
+      ((ceph_le64 *)b)[i] = init_le64(engine());
+    }
+    outbl->append(p);
+  }
+}
+
diff --git a/src/common/CDC.h b/src/common/CDC.h
index 8c564034f2c..5c4273a0874 100644
--- a/src/common/CDC.h
+++ b/src/common/CDC.h
@@ -6,6 +6,7 @@
 #include <vector>
 #include <string>
 
+#include "include/types.h"
 #include "include/buffer.h"
 
 class CDC {
@@ -25,3 +26,5 @@ public:
     int bits,
     int windowbits = 0);
 };
+
+void generate_buffer(int size, bufferlist *outbl, int seed = 0);
diff --git a/src/test/common/test_cdc.cc b/src/test/common/test_cdc.cc
index 692c2ecb8fd..36047655ef7 100644
--- a/src/test/common/test_cdc.cc
+++ b/src/test/common/test_cdc.cc
@@ -11,28 +11,6 @@
 #include "common/CDC.h"
 #include "gtest/gtest.h"
 
-void generate_buffer(int size, bufferlist *outbl, int seed = 0)
-{
-  std::mt19937_64 engine, engine2;
-  engine.seed(seed);
-  engine2.seed(seed);
-
-  // assemble from randomly-sized segments!
-  outbl->clear();
-  auto left = size;
-  while (left) {
-    size_t l = std::min<size_t>((engine2() & 0xffff0) + 16, left);
-    left -= l;
-    bufferptr p(l);
-    p.set_length(l);
-    char *b = p.c_str();
-    for (size_t i = 0; i < l / sizeof(uint64_t); ++i) {
-      ((ceph_le64 *)b)[i] = init_le64(engine());
-    }
-    outbl->append(p);
-  }
-}
-
 class CDCTest : public ::testing::Test,
 		public ::testing::WithParamInterface<const char*> {
 public:
diff --git a/src/test/librados/tier_cxx.cc b/src/test/librados/tier_cxx.cc
index a65e1da205c..e6c549a656c 100644
--- a/src/test/librados/tier_cxx.cc
+++ b/src/test/librados/tier_cxx.cc
@@ -4647,6 +4647,367 @@ TEST_F(LibRadosTwoPoolsPP, ManifestEvict) {
 
 }
 
+#include <common/CDC.h>
+TEST_F(LibRadosTwoPoolsPP, DedupFlushRead) {
+  // skip test if not yet octopus
+  if (_get_required_osd_release(cluster) < "octopus") {
+    GTEST_SKIP() << "cluster is not yet octopus, skipping test";
+  }
+
+  bufferlist inbl;
+  ASSERT_EQ(0, cluster.mon_command(
+	set_pool_str(cache_pool_name, "fingerprint_algorithm", "sha1"),
+	inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+	set_pool_str(cache_pool_name, "dedup_tier", pool_name),
+	inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+	set_pool_str(cache_pool_name, "dedup_chunk_algorithm", "fastcdc"),
+	inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+	set_pool_str(cache_pool_name, "dedup_cdc_window_size", 8192),
+	inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+	set_pool_str(cache_pool_name, "dedup_cdc_chunk_size", 1024),
+	inbl, NULL, NULL));
+
+  // wait for maps to settle
+  cluster.wait_for_latest_osdmap();
+
+  // create object
+  bufferlist gbl;
+  {
+    generate_buffer(1024*8, &gbl);
+    ObjectWriteOperation op;
+    op.write_full(gbl);
+    ASSERT_EQ(0, cache_ioctx.operate("foo-chunk", &op));
+  }
+  {
+    bufferlist bl;
+    bl.append("DDse chunk");
+    ObjectWriteOperation op;
+    op.write_full(bl);
+    ASSERT_EQ(0, ioctx.operate("bar-chunk", &op));
+  }
+
+  // set-chunk to set manifest object
+  {
+    ObjectReadOperation op;
+    op.set_chunk(0, 2, ioctx, "bar-chunk", 0,
+		CEPH_OSD_OP_FLAG_WITH_REFERENCE);
+    librados::AioCompletion *completion = cluster.aio_create_completion();
+    ASSERT_EQ(0, cache_ioctx.aio_operate("foo-chunk", completion, &op,
+	      librados::OPERATION_IGNORE_CACHE, NULL));
+    completion->wait_for_complete();
+    ASSERT_EQ(0, completion->get_return_value());
+    completion->release();
+  }
+  // flush
+  {
+    ObjectReadOperation op;
+    op.tier_flush();
+    librados::AioCompletion *completion = cluster.aio_create_completion();
+    ASSERT_EQ(0, cache_ioctx.aio_operate(
+      "foo-chunk", completion, &op,
+      librados::OPERATION_IGNORE_CACHE, NULL));
+    completion->wait_for_complete();
+    ASSERT_EQ(0, completion->get_return_value());
+    completion->release();
+  }
+
+  std::unique_ptr<CDC> cdc = CDC::create("fastcdc", cbits(1024)-1);
+  vector<pair<uint64_t, uint64_t>> chunks;
+  bufferlist chunk;
+  cdc->calc_chunks(gbl, &chunks);
+  chunk.substr_of(gbl, chunks[1].first, chunks[1].second);
+  string tgt_oid;
+  {
+    unsigned char fingerprint[CEPH_CRYPTO_SHA1_DIGESTSIZE + 1] = {0};
+    char p_str[CEPH_CRYPTO_SHA1_DIGESTSIZE*2+1] = {0};
+    SHA1 sha1_gen;
+    int size = chunk.length();
+    sha1_gen.Update((const unsigned char *)chunk.c_str(), size);
+    sha1_gen.Final(fingerprint);
+    buf_to_hex(fingerprint, CEPH_CRYPTO_SHA1_DIGESTSIZE, p_str);
+    tgt_oid = string(p_str);
+  }
+
+  // read and verify the chunked object
+  {
+    bufferlist test_bl;
+    ASSERT_EQ(2, ioctx.read(tgt_oid, test_bl, 2, 0));
+    ASSERT_EQ(test_bl[1], chunk[1]);
+  }
+
+  ASSERT_EQ(0, cluster.mon_command(
+	set_pool_str(cache_pool_name, "dedup_cdc_window_size", 512),
+	inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+	set_pool_str(cache_pool_name, "dedup_cdc_chunk_size", 512),
+	inbl, NULL, NULL));
+
+  // flush
+  {
+    ObjectReadOperation op;
+    op.tier_flush();
+    librados::AioCompletion *completion = cluster.aio_create_completion();
+    ASSERT_EQ(0, cache_ioctx.aio_operate(
+      "foo-chunk", completion, &op,
+      librados::OPERATION_IGNORE_CACHE, NULL));
+    completion->wait_for_complete();
+    ASSERT_EQ(0, completion->get_return_value());
+    completion->release();
+  }
+
+  cdc = CDC::create("fastcdc", cbits(512)-1);
+  cdc->calc_chunks(gbl, &chunks);
+  chunk.substr_of(gbl, chunks[1].first, chunks[1].second);
+  {
+    unsigned char fingerprint[CEPH_CRYPTO_SHA1_DIGESTSIZE + 1] = {0};
+    char p_str[CEPH_CRYPTO_SHA1_DIGESTSIZE*2+1] = {0};
+    SHA1 sha1_gen;
+    int size = chunk.length();
+    sha1_gen.Update((const unsigned char *)chunk.c_str(), size);
+    sha1_gen.Final(fingerprint);
+    buf_to_hex(fingerprint, CEPH_CRYPTO_SHA1_DIGESTSIZE, p_str);
+    tgt_oid = string(p_str);
+  }
+
+  // read and verify the chunked object
+  {
+    bufferlist test_bl;
+    ASSERT_EQ(2, ioctx.read(tgt_oid, test_bl, 2, 0));
+    ASSERT_EQ(test_bl[1], chunk[1]);
+  }
+
+  ASSERT_EQ(0, cluster.mon_command(
+	set_pool_str(cache_pool_name, "dedup_cdc_window_size", 16384),
+	inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+	set_pool_str(cache_pool_name, "dedup_cdc_chunk_size", 16384),
+	inbl, NULL, NULL));
+
+  // flush
+  {
+    ObjectReadOperation op;
+    op.tier_flush();
+    librados::AioCompletion *completion = cluster.aio_create_completion();
+    ASSERT_EQ(0, cache_ioctx.aio_operate(
+      "foo-chunk", completion, &op,
+      librados::OPERATION_IGNORE_CACHE, NULL));
+    completion->wait_for_complete();
+    ASSERT_EQ(0, completion->get_return_value());
+    completion->release();
+  }
+
+  cdc = CDC::create("fastcdc", cbits(16384)-1);
+  cdc->calc_chunks(gbl, &chunks);
+  chunk.substr_of(gbl, chunks[0].first, chunks[0].second);
+  {
+    unsigned char fingerprint[CEPH_CRYPTO_SHA1_DIGESTSIZE + 1] = {0};
+    char p_str[CEPH_CRYPTO_SHA1_DIGESTSIZE*2+1] = {0};
+    SHA1 sha1_gen;
+    int size = chunk.length();
+    sha1_gen.Update((const unsigned char *)chunk.c_str(), size);
+    sha1_gen.Final(fingerprint);
+    buf_to_hex(fingerprint, CEPH_CRYPTO_SHA1_DIGESTSIZE, p_str);
+    tgt_oid = string(p_str);
+  }
+  // read and verify the chunked object
+  {
+    bufferlist test_bl;
+    ASSERT_EQ(2, ioctx.read(tgt_oid, test_bl, 2, 0));
+    ASSERT_EQ(test_bl[0], chunk[0]);
+  }
+
+}
+
+TEST_F(LibRadosTwoPoolsPP, ManifestFlushSnap) {
+  // skip test if not yet octopus
+  if (_get_required_osd_release(cluster) < "octopus") {
+    cout << "cluster is not yet octopus, skipping test" << std::endl;
+    return;
+  }
+
+  bufferlist inbl;
+  ASSERT_EQ(0, cluster.mon_command(
+	set_pool_str(cache_pool_name, "fingerprint_algorithm", "sha1"),
+	inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+	set_pool_str(cache_pool_name, "dedup_tier", pool_name),
+	inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+	set_pool_str(cache_pool_name, "dedup_chunk_algorithm", "fastcdc"),
+	inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+	set_pool_str(cache_pool_name, "dedup_cdc_window_size", 8192),
+	inbl, NULL, NULL));
+  ASSERT_EQ(0, cluster.mon_command(
+	set_pool_str(cache_pool_name, "dedup_cdc_chunk_size", 1024),
+	inbl, NULL, NULL));
+
+  // wait for maps to settle
+  cluster.wait_for_latest_osdmap();
+
+  // create object
+  bufferlist gbl;
+  {
+    //bufferlist bl;
+    //bl.append("there hi");
+    generate_buffer(1024*8, &gbl);
+    ObjectWriteOperation op;
+    op.write_full(gbl);
+    ASSERT_EQ(0, cache_ioctx.operate("foo", &op));
+  }
+  {
+    bufferlist bl;
+    bl.append("there hi");
+    ObjectWriteOperation op;
+    op.write_full(bl);
+    ASSERT_EQ(0, ioctx.operate("bar", &op));
+  }
+
+  // set-chunk (dedup)
+  manifest_set_chunk(cluster, ioctx, cache_ioctx, 2, 2, "bar", "foo");
+
+  // create a snapshot, clone
+  vector<uint64_t> my_snaps(1);
+  ASSERT_EQ(0, cache_ioctx.selfmanaged_snap_create(&my_snaps[0]));
+  ASSERT_EQ(0, cache_ioctx.selfmanaged_snap_set_write_ctx(my_snaps[0],
+	my_snaps));
+
+  // make a dirty chunks
+  {
+    bufferlist bl;
+    bl.append("Thbbe");
+    ASSERT_EQ(0, cache_ioctx.write("foo", bl, bl.length(), 0));
+  }
+
+  // and another
+  my_snaps.resize(2);
+  my_snaps[1] = my_snaps[0];
+  ASSERT_EQ(0, cache_ioctx.selfmanaged_snap_create(&my_snaps[0]));
+  ASSERT_EQ(0, cache_ioctx.selfmanaged_snap_set_write_ctx(my_snaps[0],
+	my_snaps));
+
+  // make a dirty chunks
+  {
+    bufferlist bl;
+    bl.append("Thcce");
+    ASSERT_EQ(0, cache_ioctx.write("foo", bl, bl.length(), 0));
+  }
+
+  // flush on head (should fail)
+  cache_ioctx.snap_set_read(librados::SNAP_HEAD);
+  // flush
+  {
+    ObjectReadOperation op;
+    op.tier_flush();
+    librados::AioCompletion *completion = cluster.aio_create_completion();
+    ASSERT_EQ(0, cache_ioctx.aio_operate(
+      "foo", completion, &op,
+      librados::OPERATION_IGNORE_CACHE, NULL));
+    completion->wait_for_complete();
+    ASSERT_EQ(-EBUSY, completion->get_return_value());
+    completion->release();
+  }
+
+  // flush on recent snap (should fail)
+  cache_ioctx.snap_set_read(my_snaps[0]);
+  {
+    ObjectReadOperation op;
+    op.tier_flush();
+    librados::AioCompletion *completion = cluster.aio_create_completion();
+    ASSERT_EQ(0, cache_ioctx.aio_operate(
+      "foo", completion, &op,
+      librados::OPERATION_IGNORE_CACHE, NULL));
+    completion->wait_for_complete();
+    ASSERT_EQ(-EBUSY, completion->get_return_value());
+    completion->release();
+  }
+
+  // flush on oldest snap
+  cache_ioctx.snap_set_read(my_snaps[1]);
+  {
+    ObjectReadOperation op;
+    op.tier_flush();
+    librados::AioCompletion *completion = cluster.aio_create_completion();
+    ASSERT_EQ(0, cache_ioctx.aio_operate(
+      "foo", completion, &op,
+      librados::OPERATION_IGNORE_CACHE, NULL));
+    completion->wait_for_complete();
+    ASSERT_EQ(0, completion->get_return_value());
+    completion->release();
+  }
+
+  // flush on oldest snap
+  cache_ioctx.snap_set_read(my_snaps[0]);
+  {
+    ObjectReadOperation op;
+    op.tier_flush();
+    librados::AioCompletion *completion = cluster.aio_create_completion();
+    ASSERT_EQ(0, cache_ioctx.aio_operate(
+      "foo", completion, &op,
+      librados::OPERATION_IGNORE_CACHE, NULL));
+    completion->wait_for_complete();
+    ASSERT_EQ(0, completion->get_return_value());
+    completion->release();
+  }
+
+  // flush on oldest snap
+  cache_ioctx.snap_set_read(librados::SNAP_HEAD);
+  {
+    ObjectReadOperation op;
+    op.tier_flush();
+    librados::AioCompletion *completion = cluster.aio_create_completion();
+    ASSERT_EQ(0, cache_ioctx.aio_operate(
+      "foo", completion, &op,
+      librados::OPERATION_IGNORE_CACHE, NULL));
+    completion->wait_for_complete();
+    ASSERT_EQ(0, completion->get_return_value());
+    completion->release();
+  }
+
+  // check chunk's refcount
+  std::unique_ptr<CDC> cdc = CDC::create("fastcdc", cbits(1024)-1);
+  vector<pair<uint64_t, uint64_t>> chunks;
+  bufferlist chunk;
+  cdc->calc_chunks(gbl, &chunks);
+  chunk.substr_of(gbl, chunks[1].first, chunks[1].second);
+  string tgt_oid;
+  {
+    unsigned char fingerprint[CEPH_CRYPTO_SHA1_DIGESTSIZE + 1] = {0};
+    char p_str[CEPH_CRYPTO_SHA1_DIGESTSIZE*2+1] = {0};
+    SHA1 sha1_gen;
+    int size = chunk.length();
+    sha1_gen.Update((const unsigned char *)chunk.c_str(), size);
+    sha1_gen.Final(fingerprint);
+    buf_to_hex(fingerprint, CEPH_CRYPTO_SHA1_DIGESTSIZE, p_str);
+    tgt_oid = string(p_str);
+  }
+  // read and verify the chunked object
+  {
+    bufferlist test_bl;
+    ASSERT_EQ(2, ioctx.read(tgt_oid, test_bl, 2, 0));
+    ASSERT_EQ(test_bl[1], chunk[1]);
+  }
+
+  cache_ioctx.snap_set_read(librados::SNAP_HEAD);
+  {
+    bufferlist bl;
+    ASSERT_EQ(4, cache_ioctx.read("foo", bl, 4, 0));
+    ASSERT_EQ('c', bl[2]);
+  }
+
+  cache_ioctx.snap_set_read(my_snaps[0]);
+  {
+    bufferlist bl;
+    ASSERT_EQ(4, cache_ioctx.read("foo", bl, 4, 0));
+    ASSERT_EQ('b', bl[2]);
+  }
+}
+
+
 class LibRadosTwoPoolsECPP : public RadosTestECPP
 {
 public: