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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());
}
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