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-rw-r--r--src/test/osd/test_ec_transaction.cc124
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diff --git a/src/test/osd/test_ec_transaction.cc b/src/test/osd/test_ec_transaction.cc
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+++ b/src/test/osd/test_ec_transaction.cc
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+// -*- 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) 2016 Red Hat
+ *
+ * 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 <gtest/gtest.h>
+#include "osd/PGTransaction.h"
+#include "osd/ECTransaction.h"
+
+#include "test/unit.cc"
+
+struct mydpp : public DoutPrefixProvider {
+ std::ostream& gen_prefix(std::ostream& out) const override { return out << "foo"; }
+ CephContext *get_cct() const override { return g_ceph_context; }
+ unsigned get_subsys() const override { return ceph_subsys_osd; }
+} dpp;
+
+#define dout_context g_ceph_context
+
+TEST(ectransaction, two_writes_separated)
+{
+ hobject_t h;
+ PGTransactionUPtr t(new PGTransaction);
+ bufferlist a, b;
+ t->create(h);
+ a.append_zero(565760);
+ t->write(h, 0, a.length(), a, 0);
+ b.append_zero(2437120);
+ t->write(h, 669856, b.length(), b, 0);
+
+ ECUtil::stripe_info_t sinfo(2, 8192);
+ auto plan = ECTransaction::get_write_plan(
+ sinfo,
+ std::move(t),
+ [&](const hobject_t &i) {
+ ECUtil::HashInfoRef ref(new ECUtil::HashInfo(1));
+ return ref;
+ },
+ &dpp);
+ generic_derr << "to_read " << plan.to_read << dendl;
+ generic_derr << "will_write " << plan.will_write << dendl;
+
+ ASSERT_EQ(0u, plan.to_read.size());
+ ASSERT_EQ(1u, plan.will_write.size());
+}
+
+TEST(ectransaction, two_writes_nearby)
+{
+ hobject_t h;
+ PGTransactionUPtr t(new PGTransaction);
+ bufferlist a, b;
+ t->create(h);
+
+ // two nearby writes, both partly touching the same 8192-byte stripe
+ ECUtil::stripe_info_t sinfo(2, 8192);
+ a.append_zero(565760);
+ t->write(h, 0, a.length(), a, 0);
+ b.append_zero(2437120);
+ t->write(h, 569856, b.length(), b, 0);
+
+ auto plan = ECTransaction::get_write_plan(
+ sinfo,
+ std::move(t),
+ [&](const hobject_t &i) {
+ ECUtil::HashInfoRef ref(new ECUtil::HashInfo(1));
+ return ref;
+ },
+ &dpp);
+ generic_derr << "to_read " << plan.to_read << dendl;
+ generic_derr << "will_write " << plan.will_write << dendl;
+
+ ASSERT_EQ(0u, plan.to_read.size());
+ ASSERT_EQ(1u, plan.will_write.size());
+}
+
+TEST(ectransaction, many_writes)
+{
+ hobject_t h;
+ PGTransactionUPtr t(new PGTransaction);
+ bufferlist a, b;
+ a.append_zero(512);
+ b.append_zero(4096);
+ t->create(h);
+
+ ECUtil::stripe_info_t sinfo(2, 8192);
+ // write 2801664~512
+ // write 2802176~512
+ // write 2802688~512
+ // write 2803200~512
+ t->write(h, 2801664, a.length(), a, 0);
+ t->write(h, 2802176, a.length(), a, 0);
+ t->write(h, 2802688, a.length(), a, 0);
+ t->write(h, 2803200, a.length(), a, 0);
+
+ // write 2805760~4096
+ // write 2809856~4096
+ // write 2813952~4096
+ t->write(h, 2805760, b.length(), b, 0);
+ t->write(h, 2809856, b.length(), b, 0);
+ t->write(h, 2813952, b.length(), b, 0);
+
+ auto plan = ECTransaction::get_write_plan(
+ sinfo,
+ std::move(t),
+ [&](const hobject_t &i) {
+ ECUtil::HashInfoRef ref(new ECUtil::HashInfo(1));
+ return ref;
+ },
+ &dpp);
+ generic_derr << "to_read " << plan.to_read << dendl;
+ generic_derr << "will_write " << plan.will_write << dendl;
+
+ ASSERT_EQ(0u, plan.to_read.size());
+ ASSERT_EQ(1u, plan.will_write.size());
+}