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pg_backend.cc
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pg_backend.cc
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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "pg_backend.h"
#include <charconv>
#include <optional>
#include <boost/range/adaptor/filtered.hpp>
#include <boost/range/adaptor/transformed.hpp>
#include <boost/range/algorithm/copy.hpp>
#include <fmt/format.h>
#include <fmt/ostream.h>
#include <seastar/core/print.hh>
#include "messages/MOSDOp.h"
#include "os/Transaction.h"
#include "common/Checksummer.h"
#include "common/Clock.h"
#include "crimson/common/exception.h"
#include "crimson/os/futurized_collection.h"
#include "crimson/os/futurized_store.h"
#include "crimson/osd/osd_operation.h"
#include "replicated_backend.h"
#include "replicated_recovery_backend.h"
#include "ec_backend.h"
#include "exceptions.h"
namespace {
seastar::logger& logger() {
return crimson::get_logger(ceph_subsys_osd);
}
}
using std::runtime_error;
using std::string;
using std::string_view;
using crimson::common::local_conf;
std::unique_ptr<PGBackend>
PGBackend::create(pg_t pgid,
const pg_shard_t pg_shard,
const pg_pool_t& pool,
crimson::os::CollectionRef coll,
crimson::osd::ShardServices& shard_services,
const ec_profile_t& ec_profile)
{
switch (pool.type) {
case pg_pool_t::TYPE_REPLICATED:
return std::make_unique<ReplicatedBackend>(pgid, pg_shard,
coll, shard_services);
case pg_pool_t::TYPE_ERASURE:
return std::make_unique<ECBackend>(pg_shard.shard, coll, shard_services,
std::move(ec_profile),
pool.stripe_width);
default:
throw runtime_error(seastar::format("unsupported pool type '{}'",
pool.type));
}
}
PGBackend::PGBackend(shard_id_t shard,
CollectionRef coll,
crimson::os::FuturizedStore* store)
: shard{shard},
coll{coll},
store{store}
{}
PGBackend::load_metadata_iertr::future
<PGBackend::loaded_object_md_t::ref>
PGBackend::load_metadata(const hobject_t& oid)
{
if (__builtin_expect(stopping, false)) {
throw crimson::common::system_shutdown_exception();
}
return interruptor::make_interruptible(store->get_attrs(
coll,
ghobject_t{oid, ghobject_t::NO_GEN, shard})).safe_then_interruptible(
[oid](auto &&attrs) -> load_metadata_ertr::future<loaded_object_md_t::ref>{
loaded_object_md_t::ref ret(new loaded_object_md_t());
if (auto oiiter = attrs.find(OI_ATTR); oiiter != attrs.end()) {
bufferlist bl = std::move(oiiter->second);
ret->os = ObjectState(
object_info_t(bl, oid),
true);
} else {
logger().error(
"load_metadata: object {} present but missing object info",
oid);
return crimson::ct_error::object_corrupted::make();
}
if (oid.is_head()) {
if (auto ssiter = attrs.find(SS_ATTR); ssiter != attrs.end()) {
bufferlist bl = std::move(ssiter->second);
ret->ss = SnapSet(bl);
} else {
/* TODO: add support for writing out snapsets
logger().error(
"load_metadata: object {} present but missing snapset",
oid);
//return crimson::ct_error::object_corrupted::make();
*/
ret->ss = SnapSet();
}
}
return load_metadata_ertr::make_ready_future<loaded_object_md_t::ref>(
std::move(ret));
}, crimson::ct_error::enoent::handle([oid] {
logger().debug(
"load_metadata: object {} doesn't exist, returning empty metadata",
oid);
return load_metadata_ertr::make_ready_future<loaded_object_md_t::ref>(
new loaded_object_md_t{
ObjectState(
object_info_t(oid),
false),
oid.is_head() ? std::optional<SnapSet>(SnapSet()) : std::nullopt
});
}));
}
PGBackend::rep_op_fut_t
PGBackend::mutate_object(
std::set<pg_shard_t> pg_shards,
crimson::osd::ObjectContextRef &&obc,
ceph::os::Transaction&& txn,
osd_op_params_t&& osd_op_p,
epoch_t min_epoch,
epoch_t map_epoch,
std::vector<pg_log_entry_t>&& log_entries)
{
logger().trace("mutate_object: num_ops={}", txn.get_num_ops());
if (obc->obs.exists) {
#if 0
obc->obs.oi.version = ctx->at_version;
obc->obs.oi.prior_version = ctx->obs->oi.version;
#endif
obc->obs.oi.prior_version = obc->obs.oi.version;
obc->obs.oi.version = osd_op_p.at_version;
if (osd_op_p.user_at_version > obc->obs.oi.user_version)
obc->obs.oi.user_version = osd_op_p.user_at_version;
obc->obs.oi.last_reqid = osd_op_p.req_id;
obc->obs.oi.mtime = osd_op_p.mtime;
obc->obs.oi.local_mtime = ceph_clock_now();
// object_info_t
{
ceph::bufferlist osv;
obc->obs.oi.encode_no_oid(osv, CEPH_FEATURES_ALL);
// TODO: get_osdmap()->get_features(CEPH_ENTITY_TYPE_OSD, nullptr));
txn.setattr(coll->get_cid(), ghobject_t{obc->obs.oi.soid}, OI_ATTR, osv);
}
} else {
// reset cached ObjectState without enforcing eviction
obc->obs.oi = object_info_t(obc->obs.oi.soid);
}
return _submit_transaction(
std::move(pg_shards), obc->obs.oi.soid, std::move(txn),
std::move(osd_op_p), min_epoch, map_epoch, std::move(log_entries));
}
static inline bool _read_verify_data(
const object_info_t& oi,
const ceph::bufferlist& data)
{
if (oi.is_data_digest() && oi.size == data.length()) {
// whole object? can we verify the checksum?
if (auto crc = data.crc32c(-1); crc != oi.data_digest) {
logger().error("full-object read crc {} != expected {} on {}",
crc, oi.data_digest, oi.soid);
// todo: mark soid missing, perform recovery, and retry
return false;
}
}
return true;
}
PGBackend::read_ierrorator::future<>
PGBackend::read(const ObjectState& os, OSDOp& osd_op,
object_stat_sum_t& delta_stats)
{
const auto& oi = os.oi;
const ceph_osd_op& op = osd_op.op;
const uint64_t offset = op.extent.offset;
uint64_t length = op.extent.length;
logger().trace("read: {} {}~{}", oi.soid, offset, length);
if (!os.exists || os.oi.is_whiteout()) {
logger().debug("{}: {} DNE", __func__, os.oi.soid);
return crimson::ct_error::enoent::make();
}
// are we beyond truncate_size?
size_t size = oi.size;
if ((op.extent.truncate_seq > oi.truncate_seq) &&
(op.extent.truncate_size < offset + length) &&
(op.extent.truncate_size < size)) {
size = op.extent.truncate_size;
}
if (offset >= size) {
// read size was trimmed to zero and it is expected to do nothing,
return read_errorator::now();
}
if (!length) {
// read the whole object if length is 0
length = size;
}
return _read(oi.soid, offset, length, op.flags).safe_then_interruptible_tuple(
[&delta_stats, &oi, &osd_op](auto&& bl) -> read_errorator::future<> {
if (!_read_verify_data(oi, bl)) {
// crc mismatches
return crimson::ct_error::object_corrupted::make();
}
logger().debug("read: data length: {}", bl.length());
osd_op.rval = bl.length();
delta_stats.num_rd++;
delta_stats.num_rd_kb += shift_round_up(bl.length(), 10);
osd_op.outdata = std::move(bl);
return read_errorator::now();
}, crimson::ct_error::input_output_error::handle([] {
return read_errorator::future<>{crimson::ct_error::object_corrupted::make()};
}),
read_errorator::pass_further{});
}
PGBackend::read_ierrorator::future<>
PGBackend::sparse_read(const ObjectState& os, OSDOp& osd_op,
object_stat_sum_t& delta_stats)
{
const auto& op = osd_op.op;
logger().trace("sparse_read: {} {}~{}",
os.oi.soid, op.extent.offset, op.extent.length);
return interruptor::make_interruptible(store->fiemap(coll, ghobject_t{os.oi.soid},
op.extent.offset,
op.extent.length)).then_interruptible(
[&delta_stats, &os, &osd_op, this](auto&& m) {
return seastar::do_with(interval_set<uint64_t>{std::move(m)},
[&delta_stats, &os, &osd_op, this](auto&& extents) {
return interruptor::make_interruptible(store->readv(coll, ghobject_t{os.oi.soid},
extents, osd_op.op.flags)).safe_then_interruptible_tuple(
[&delta_stats, &os, &osd_op, &extents](auto&& bl) -> read_errorator::future<> {
if (_read_verify_data(os.oi, bl)) {
osd_op.op.extent.length = bl.length();
// re-encode since it might be modified
ceph::encode(extents, osd_op.outdata);
encode_destructively(bl, osd_op.outdata);
logger().trace("sparse_read got {} bytes from object {}",
osd_op.op.extent.length, os.oi.soid);
delta_stats.num_rd++;
delta_stats.num_rd_kb += shift_round_up(osd_op.op.extent.length, 10);
return read_errorator::make_ready_future<>();
} else {
// crc mismatches
return crimson::ct_error::object_corrupted::make();
}
}, crimson::ct_error::input_output_error::handle([] {
return read_errorator::future<>{crimson::ct_error::object_corrupted::make()};
}),
read_errorator::pass_further{});
});
});
}
namespace {
template<class CSum>
PGBackend::checksum_errorator::future<>
do_checksum(ceph::bufferlist& init_value_bl,
size_t chunk_size,
const ceph::bufferlist& buf,
ceph::bufferlist& result)
{
typename CSum::init_value_t init_value;
auto init_value_p = init_value_bl.cbegin();
try {
decode(init_value, init_value_p);
// chop off the consumed part
init_value_bl.splice(0, init_value_p.get_off());
} catch (const ceph::buffer::end_of_buffer&) {
logger().warn("{}: init value not provided", __func__);
return crimson::ct_error::invarg::make();
}
const uint32_t chunk_count = buf.length() / chunk_size;
ceph::bufferptr csum_data{
ceph::buffer::create(sizeof(typename CSum::value_t) * chunk_count)};
Checksummer::calculate<CSum>(
init_value, chunk_size, 0, buf.length(), buf, &csum_data);
encode(chunk_count, result);
result.append(std::move(csum_data));
return PGBackend::checksum_errorator::now();
}
}
PGBackend::checksum_ierrorator::future<>
PGBackend::checksum(const ObjectState& os, OSDOp& osd_op)
{
// sanity tests and normalize the argments
auto& checksum = osd_op.op.checksum;
if (checksum.offset == 0 && checksum.length == 0) {
// zeroed offset+length implies checksum whole object
checksum.length = os.oi.size;
} else if (checksum.offset >= os.oi.size) {
// read size was trimmed to zero, do nothing,
// see PGBackend::read()
return checksum_errorator::now();
}
if (checksum.chunk_size > 0) {
if (checksum.length == 0) {
logger().warn("{}: length required when chunk size provided", __func__);
return crimson::ct_error::invarg::make();
}
if (checksum.length % checksum.chunk_size != 0) {
logger().warn("{}: length not aligned to chunk size", __func__);
return crimson::ct_error::invarg::make();
}
} else {
checksum.chunk_size = checksum.length;
}
if (checksum.length == 0) {
uint32_t count = 0;
encode(count, osd_op.outdata);
return checksum_errorator::now();
}
// read the chunk to be checksum'ed
return _read(os.oi.soid, checksum.offset, checksum.length, osd_op.op.flags)
.safe_then_interruptible(
[&osd_op](auto&& read_bl) mutable -> checksum_errorator::future<> {
auto& checksum = osd_op.op.checksum;
if (read_bl.length() != checksum.length) {
logger().warn("checksum: bytes read {} != {}",
read_bl.length(), checksum.length);
return crimson::ct_error::invarg::make();
}
// calculate its checksum and put the result in outdata
switch (checksum.type) {
case CEPH_OSD_CHECKSUM_OP_TYPE_XXHASH32:
return do_checksum<Checksummer::xxhash32>(osd_op.indata,
checksum.chunk_size,
read_bl,
osd_op.outdata);
case CEPH_OSD_CHECKSUM_OP_TYPE_XXHASH64:
return do_checksum<Checksummer::xxhash64>(osd_op.indata,
checksum.chunk_size,
read_bl,
osd_op.outdata);
case CEPH_OSD_CHECKSUM_OP_TYPE_CRC32C:
return do_checksum<Checksummer::crc32c>(osd_op.indata,
checksum.chunk_size,
read_bl,
osd_op.outdata);
default:
logger().warn("checksum: unknown crc type ({})",
static_cast<uint32_t>(checksum.type));
return crimson::ct_error::invarg::make();
}
});
}
PGBackend::cmp_ext_ierrorator::future<>
PGBackend::cmp_ext(const ObjectState& os, OSDOp& osd_op)
{
const ceph_osd_op& op = osd_op.op;
// return the index of the first unmatched byte in the payload, hence the
// strange limit and check
if (op.extent.length > MAX_ERRNO) {
return crimson::ct_error::invarg::make();
}
uint64_t obj_size = os.oi.size;
if (os.oi.truncate_seq < op.extent.truncate_seq &&
op.extent.offset + op.extent.length > op.extent.truncate_size) {
obj_size = op.extent.truncate_size;
}
uint64_t ext_len;
if (op.extent.offset >= obj_size) {
ext_len = 0;
} else if (op.extent.offset + op.extent.length > obj_size) {
ext_len = obj_size - op.extent.offset;
} else {
ext_len = op.extent.length;
}
auto read_ext = ll_read_ierrorator::make_ready_future<ceph::bufferlist>();
if (ext_len == 0) {
logger().debug("{}: zero length extent", __func__);
} else if (!os.exists || os.oi.is_whiteout()) {
logger().debug("{}: {} DNE", __func__, os.oi.soid);
} else {
read_ext = _read(os.oi.soid, op.extent.offset, ext_len, 0);
}
return read_ext.safe_then_interruptible([&osd_op](auto&& read_bl) {
int32_t retcode = 0;
for (unsigned index = 0; index < osd_op.indata.length(); index++) {
char byte_in_op = osd_op.indata[index];
char byte_from_disk = (index < read_bl.length() ? read_bl[index] : 0);
if (byte_in_op != byte_from_disk) {
logger().debug("cmp_ext: mismatch at {}", index);
retcode = -MAX_ERRNO - index;
break;
}
}
logger().debug("cmp_ext: {}", retcode);
osd_op.rval = retcode;
});
}
PGBackend::stat_ierrorator::future<>
PGBackend::stat(
const ObjectState& os,
OSDOp& osd_op,
object_stat_sum_t& delta_stats)
{
if (os.exists/* TODO: && !os.is_whiteout() */) {
logger().debug("stat os.oi.size={}, os.oi.mtime={}", os.oi.size, os.oi.mtime);
encode(os.oi.size, osd_op.outdata);
encode(os.oi.mtime, osd_op.outdata);
} else {
logger().debug("stat object does not exist");
return crimson::ct_error::enoent::make();
}
delta_stats.num_rd++;
return stat_errorator::now();
}
bool PGBackend::maybe_create_new_object(
ObjectState& os,
ceph::os::Transaction& txn,
object_stat_sum_t& delta_stats)
{
if (!os.exists) {
ceph_assert(!os.oi.is_whiteout());
os.exists = true;
os.oi.new_object();
txn.touch(coll->get_cid(), ghobject_t{os.oi.soid});
delta_stats.num_objects++;
return false;
} else if (os.oi.is_whiteout()) {
os.oi.clear_flag(object_info_t::FLAG_WHITEOUT);
delta_stats.num_whiteouts--;
}
return true;
}
void PGBackend::update_size_and_usage(object_stat_sum_t& delta_stats,
object_info_t& oi, uint64_t offset,
uint64_t length, bool write_full)
{
if (write_full ||
(offset + length > oi.size && length)) {
uint64_t new_size = offset + length;
delta_stats.num_bytes -= oi.size;
delta_stats.num_bytes += new_size;
oi.size = new_size;
}
delta_stats.num_wr++;
delta_stats.num_wr_kb += shift_round_up(length, 10);
}
void PGBackend::truncate_update_size_and_usage(object_stat_sum_t& delta_stats,
object_info_t& oi,
uint64_t truncate_size)
{
if (oi.size != truncate_size) {
delta_stats.num_bytes -= oi.size;
delta_stats.num_bytes += truncate_size;
oi.size = truncate_size;
}
}
static bool is_offset_and_length_valid(
const std::uint64_t offset,
const std::uint64_t length)
{
if (const std::uint64_t max = local_conf()->osd_max_object_size;
offset >= max || length > max || offset + length > max) {
logger().debug("{} osd_max_object_size: {}, offset: {}, len: {}; "
"Hard limit of object size is 4GB",
__func__, max, offset, length);
return false;
} else {
return true;
}
}
PGBackend::interruptible_future<> PGBackend::write(
ObjectState& os,
const OSDOp& osd_op,
ceph::os::Transaction& txn,
osd_op_params_t& osd_op_params,
object_stat_sum_t& delta_stats)
{
const ceph_osd_op& op = osd_op.op;
uint64_t offset = op.extent.offset;
uint64_t length = op.extent.length;
bufferlist buf = osd_op.indata;
if (auto seq = os.oi.truncate_seq;
seq != 0 && op.extent.truncate_seq < seq) {
// old write, arrived after trimtrunc
if (offset + length > os.oi.size) {
// no-op
if (offset > os.oi.size) {
length = 0;
buf.clear();
} else {
// truncate
auto len = os.oi.size - offset;
buf.splice(len, length);
length = len;
}
}
} else if (op.extent.truncate_seq > seq) {
// write arrives before trimtrunc
if (os.exists && !os.oi.is_whiteout()) {
txn.truncate(coll->get_cid(),
ghobject_t{os.oi.soid}, op.extent.truncate_size);
if (op.extent.truncate_size != os.oi.size) {
os.oi.size = length;
if (op.extent.truncate_size > os.oi.size) {
osd_op_params.clean_regions.mark_data_region_dirty(os.oi.size,
op.extent.truncate_size - os.oi.size);
} else {
osd_op_params.clean_regions.mark_data_region_dirty(op.extent.truncate_size,
os.oi.size - op.extent.truncate_size);
}
}
truncate_update_size_and_usage(delta_stats, os.oi, op.extent.truncate_size);
}
os.oi.truncate_seq = op.extent.truncate_seq;
os.oi.truncate_size = op.extent.truncate_size;
}
maybe_create_new_object(os, txn, delta_stats);
if (length == 0) {
if (offset > os.oi.size) {
txn.truncate(coll->get_cid(), ghobject_t{os.oi.soid}, op.extent.offset);
truncate_update_size_and_usage(delta_stats, os.oi, op.extent.offset);
} else {
txn.nop();
}
} else {
txn.write(coll->get_cid(), ghobject_t{os.oi.soid},
offset, length, std::move(buf), op.flags);
update_size_and_usage(delta_stats, os.oi, offset, length);
}
osd_op_params.clean_regions.mark_data_region_dirty(op.extent.offset,
op.extent.length);
return seastar::now();
}
PGBackend::interruptible_future<> PGBackend::write_same(
ObjectState& os,
const OSDOp& osd_op,
ceph::os::Transaction& txn,
osd_op_params_t& osd_op_params,
object_stat_sum_t& delta_stats)
{
const ceph_osd_op& op = osd_op.op;
const uint64_t len = op.writesame.length;
if (len == 0) {
return seastar::now();
}
if (op.writesame.data_length == 0 ||
len % op.writesame.data_length != 0 ||
op.writesame.data_length != osd_op.indata.length()) {
throw crimson::osd::invalid_argument();
}
ceph::bufferlist repeated_indata;
for (uint64_t size = 0; size < len; size += op.writesame.data_length) {
repeated_indata.append(osd_op.indata);
}
maybe_create_new_object(os, txn, delta_stats);
txn.write(coll->get_cid(), ghobject_t{os.oi.soid},
op.writesame.offset, len,
std::move(repeated_indata), op.flags);
update_size_and_usage(delta_stats, os.oi, op.writesame.offset, len);
osd_op_params.clean_regions.mark_data_region_dirty(op.writesame.offset, len);
return seastar::now();
}
PGBackend::interruptible_future<> PGBackend::writefull(
ObjectState& os,
const OSDOp& osd_op,
ceph::os::Transaction& txn,
osd_op_params_t& osd_op_params,
object_stat_sum_t& delta_stats)
{
const ceph_osd_op& op = osd_op.op;
if (op.extent.length != osd_op.indata.length()) {
throw crimson::osd::invalid_argument();
}
const bool existing = maybe_create_new_object(os, txn, delta_stats);
if (existing && op.extent.length < os.oi.size) {
txn.truncate(coll->get_cid(), ghobject_t{os.oi.soid}, op.extent.length);
truncate_update_size_and_usage(delta_stats, os.oi, op.extent.truncate_size);
osd_op_params.clean_regions.mark_data_region_dirty(op.extent.length,
os.oi.size - op.extent.length);
}
if (op.extent.length) {
txn.write(coll->get_cid(), ghobject_t{os.oi.soid}, 0, op.extent.length,
osd_op.indata, op.flags);
update_size_and_usage(delta_stats, os.oi, 0,
op.extent.length, true);
osd_op_params.clean_regions.mark_data_region_dirty(0,
std::max((uint64_t) op.extent.length, os.oi.size));
}
return seastar::now();
}
PGBackend::append_ierrorator::future<> PGBackend::append(
ObjectState& os,
OSDOp& osd_op,
ceph::os::Transaction& txn,
osd_op_params_t& osd_op_params,
object_stat_sum_t& delta_stats)
{
const ceph_osd_op& op = osd_op.op;
if (op.extent.length != osd_op.indata.length()) {
return crimson::ct_error::invarg::make();
}
maybe_create_new_object(os, txn, delta_stats);
if (op.extent.length) {
txn.write(coll->get_cid(), ghobject_t{os.oi.soid},
os.oi.size /* offset */, op.extent.length,
std::move(osd_op.indata), op.flags);
update_size_and_usage(delta_stats, os.oi, os.oi.size,
op.extent.length);
osd_op_params.clean_regions.mark_data_region_dirty(os.oi.size,
op.extent.length);
}
return seastar::now();
}
PGBackend::write_iertr::future<> PGBackend::truncate(
ObjectState& os,
const OSDOp& osd_op,
ceph::os::Transaction& txn,
osd_op_params_t& osd_op_params,
object_stat_sum_t& delta_stats)
{
if (!os.exists || os.oi.is_whiteout()) {
logger().debug("{} object dne, truncate is a no-op", __func__);
return write_ertr::now();
}
const ceph_osd_op& op = osd_op.op;
if (!is_offset_and_length_valid(op.extent.offset, op.extent.length)) {
return crimson::ct_error::file_too_large::make();
}
if (op.extent.truncate_seq) {
assert(op.extent.offset == op.extent.truncate_size);
if (op.extent.truncate_seq <= os.oi.truncate_seq) {
logger().debug("{} truncate seq {} <= current {}, no-op",
__func__, op.extent.truncate_seq, os.oi.truncate_seq);
return write_ertr::make_ready_future<>();
} else {
logger().debug("{} truncate seq {} > current {}, truncating",
__func__, op.extent.truncate_seq, os.oi.truncate_seq);
os.oi.truncate_seq = op.extent.truncate_seq;
os.oi.truncate_size = op.extent.truncate_size;
}
}
maybe_create_new_object(os, txn, delta_stats);
if (os.oi.size != op.extent.offset) {
txn.truncate(coll->get_cid(),
ghobject_t{os.oi.soid}, op.extent.offset);
if (os.oi.size > op.extent.offset) {
// TODO: modified_ranges.union_of(trim);
osd_op_params.clean_regions.mark_data_region_dirty(
op.extent.offset,
os.oi.size - op.extent.offset);
} else {
// os.oi.size < op.extent.offset
osd_op_params.clean_regions.mark_data_region_dirty(
os.oi.size,
op.extent.offset - os.oi.size);
}
truncate_update_size_and_usage(delta_stats, os.oi, op.extent.offset);
os.oi.clear_data_digest();
}
delta_stats.num_wr++;
// ----
// do no set exists, or we will break above DELETE -> TRUNCATE munging.
return write_ertr::now();
}
PGBackend::write_iertr::future<> PGBackend::zero(
ObjectState& os,
const OSDOp& osd_op,
ceph::os::Transaction& txn,
osd_op_params_t& osd_op_params,
object_stat_sum_t& delta_stats)
{
if (!os.exists || os.oi.is_whiteout()) {
logger().debug("{} object dne, zero is a no-op", __func__);
return write_ertr::now();
}
const ceph_osd_op& op = osd_op.op;
if (!is_offset_and_length_valid(op.extent.offset, op.extent.length)) {
return crimson::ct_error::file_too_large::make();
}
assert(op.extent.length);
txn.zero(coll->get_cid(),
ghobject_t{os.oi.soid},
op.extent.offset,
op.extent.length);
// TODO: modified_ranges.union_of(zeroed);
osd_op_params.clean_regions.mark_data_region_dirty(op.extent.offset,
op.extent.length);
delta_stats.num_wr++;
os.oi.clear_data_digest();
return write_ertr::now();
}
PGBackend::interruptible_future<> PGBackend::create(
ObjectState& os,
const OSDOp& osd_op,
ceph::os::Transaction& txn,
object_stat_sum_t& delta_stats)
{
if (os.exists && !os.oi.is_whiteout() &&
(osd_op.op.flags & CEPH_OSD_OP_FLAG_EXCL)) {
// this is an exclusive create
throw crimson::osd::make_error(-EEXIST);
}
if (osd_op.indata.length()) {
// handle the legacy. `category` is no longer implemented.
try {
auto p = osd_op.indata.cbegin();
std::string category;
decode(category, p);
} catch (buffer::error&) {
throw crimson::osd::invalid_argument();
}
}
maybe_create_new_object(os, txn, delta_stats);
txn.nop();
return seastar::now();
}
PGBackend::interruptible_future<>
PGBackend::remove(ObjectState& os, ceph::os::Transaction& txn)
{
// todo: snapset
txn.remove(coll->get_cid(),
ghobject_t{os.oi.soid, ghobject_t::NO_GEN, shard});
os.oi.size = 0;
os.oi.new_object();
os.exists = false;
// todo: update watchers
if (os.oi.is_whiteout()) {
os.oi.clear_flag(object_info_t::FLAG_WHITEOUT);
}
return seastar::now();
}
PGBackend::interruptible_future<>
PGBackend::remove(ObjectState& os, ceph::os::Transaction& txn,
object_stat_sum_t& delta_stats)
{
// todo: snapset
txn.remove(coll->get_cid(),
ghobject_t{os.oi.soid, ghobject_t::NO_GEN, shard});
delta_stats.num_bytes -= os.oi.size;
os.oi.size = 0;
os.oi.new_object();
os.exists = false;
// todo: update watchers
if (os.oi.is_whiteout()) {
os.oi.clear_flag(object_info_t::FLAG_WHITEOUT);
delta_stats.num_whiteouts--;
}
delta_stats.num_objects--;
return seastar::now();
}
PGBackend::interruptible_future<std::tuple<std::vector<hobject_t>, hobject_t>>
PGBackend::list_objects(const hobject_t& start, uint64_t limit) const
{
if (__builtin_expect(stopping, false)) {
throw crimson::common::system_shutdown_exception();
}
auto gstart = start.is_min() ? ghobject_t{} : ghobject_t{start, 0, shard};
return interruptor::make_interruptible(store->list_objects(coll,
gstart,
ghobject_t::get_max(),
limit))
.then_interruptible([](auto ret) {
auto& [gobjects, next] = ret;
std::vector<hobject_t> objects;
boost::copy(gobjects |
boost::adaptors::filtered([](const ghobject_t& o) {
if (o.is_pgmeta()) {
return false;
} else if (o.hobj.is_temp()) {
return false;
} else {
return o.is_no_gen();
}
}) |
boost::adaptors::transformed([](const ghobject_t& o) {
return o.hobj;
}),
std::back_inserter(objects));
return seastar::make_ready_future<std::tuple<std::vector<hobject_t>, hobject_t>>(
std::make_tuple(objects, next.hobj));
});
}
PGBackend::interruptible_future<> PGBackend::setxattr(
ObjectState& os,
const OSDOp& osd_op,
ceph::os::Transaction& txn,
object_stat_sum_t& delta_stats)
{
if (local_conf()->osd_max_attr_size > 0 &&
osd_op.op.xattr.value_len > local_conf()->osd_max_attr_size) {
throw crimson::osd::make_error(-EFBIG);
}
const auto max_name_len = std::min<uint64_t>(
store->get_max_attr_name_length(), local_conf()->osd_max_attr_name_len);
if (osd_op.op.xattr.name_len > max_name_len) {
throw crimson::osd::make_error(-ENAMETOOLONG);
}
maybe_create_new_object(os, txn, delta_stats);
std::string name{"_"};
ceph::bufferlist val;
{
auto bp = osd_op.indata.cbegin();
bp.copy(osd_op.op.xattr.name_len, name);
bp.copy(osd_op.op.xattr.value_len, val);
}
logger().debug("setxattr on obj={} for attr={}", os.oi.soid, name);
txn.setattr(coll->get_cid(), ghobject_t{os.oi.soid}, name, val);
delta_stats.num_wr++;
return seastar::now();
}
PGBackend::get_attr_ierrorator::future<> PGBackend::getxattr(
const ObjectState& os,
OSDOp& osd_op,
object_stat_sum_t& delta_stats) const
{
std::string name;
ceph::bufferlist val;
{
auto bp = osd_op.indata.cbegin();
std::string aname;
bp.copy(osd_op.op.xattr.name_len, aname);
name = "_" + aname;
}
logger().debug("getxattr on obj={} for attr={}", os.oi.soid, name);
return getxattr(os.oi.soid, name).safe_then_interruptible(
[&delta_stats, &osd_op] (ceph::bufferlist&& val) {
osd_op.outdata = std::move(val);
osd_op.op.xattr.value_len = osd_op.outdata.length();
delta_stats.num_rd++;
delta_stats.num_rd_kb += shift_round_up(osd_op.outdata.length(), 10);
return get_attr_errorator::now();
});
}
PGBackend::get_attr_ierrorator::future<ceph::bufferlist>
PGBackend::getxattr(
const hobject_t& soid,
std::string_view key) const
{
if (__builtin_expect(stopping, false)) {
throw crimson::common::system_shutdown_exception();
}
return store->get_attr(coll, ghobject_t{soid}, key);
}
PGBackend::get_attr_ierrorator::future<> PGBackend::get_xattrs(
const ObjectState& os,
OSDOp& osd_op,
object_stat_sum_t& delta_stats) const
{
if (__builtin_expect(stopping, false)) {
throw crimson::common::system_shutdown_exception();
}
return store->get_attrs(coll, ghobject_t{os.oi.soid}).safe_then(
[&delta_stats, &osd_op](auto&& attrs) {
std::vector<std::pair<std::string, bufferlist>> user_xattrs;
ceph::bufferlist bl;
for (auto& [key, val] : attrs) {
if (key.size() > 1 && key[0] == '_') {
bl.append(std::move(val));
user_xattrs.emplace_back(key.substr(1), std::move(bl));
}
}
ceph::encode(user_xattrs, osd_op.outdata);
delta_stats.num_rd++;
delta_stats.num_rd_kb += shift_round_up(bl.length(), 10);
return get_attr_errorator::now();
});
}
namespace {
template<typename U, typename V>
int do_cmp_xattr(int op, const U& lhs, const V& rhs)
{
switch (op) {
case CEPH_OSD_CMPXATTR_OP_EQ:
return lhs == rhs;
case CEPH_OSD_CMPXATTR_OP_NE:
return lhs != rhs;
case CEPH_OSD_CMPXATTR_OP_GT:
return lhs > rhs;
case CEPH_OSD_CMPXATTR_OP_GTE:
return lhs >= rhs;
case CEPH_OSD_CMPXATTR_OP_LT:
return lhs < rhs;
case CEPH_OSD_CMPXATTR_OP_LTE:
return lhs <= rhs;
default:
return -EINVAL;
}
}
} // anonymous namespace
static int do_xattr_cmp_u64(int op, uint64_t lhs, bufferlist& rhs_xattr)
{
uint64_t rhs;
if (rhs_xattr.length() > 0) {
const char* first = rhs_xattr.c_str();
if (auto [p, ec] = std::from_chars(first, first + rhs_xattr.length(), rhs);
ec != std::errc()) {
return -EINVAL;
}
} else {
rhs = 0;
}
logger().debug("do_xattr_cmp_u64 '{}' vs '{}' op {}", lhs, rhs, op);
return do_cmp_xattr(op, lhs, rhs);
}
PGBackend::cmp_xattr_ierrorator::future<> PGBackend::cmp_xattr(
const ObjectState& os,
OSDOp& osd_op,
object_stat_sum_t& delta_stats) const
{
std::string name{"_"};
auto bp = osd_op.indata.cbegin();
bp.copy(osd_op.op.xattr.name_len, name);
logger().debug("cmpxattr on obj={} for attr={}", os.oi.soid, name);
return getxattr(os.oi.soid, name).safe_then_interruptible(
[&delta_stats, &osd_op] (auto &&xattr) {
int result = 0;
auto bp = osd_op.indata.cbegin();
bp += osd_op.op.xattr.name_len;
switch (osd_op.op.xattr.cmp_mode) {
case CEPH_OSD_CMPXATTR_MODE_STRING:
{
string lhs;
bp.copy(osd_op.op.xattr.value_len, lhs);
string_view rhs(xattr.c_str(), xattr.length());
result = do_cmp_xattr(osd_op.op.xattr.cmp_op, lhs, rhs);
logger().debug("cmpxattr lhs={}, rhs={}", lhs, rhs);
}
break;
case CEPH_OSD_CMPXATTR_MODE_U64:
{
uint64_t lhs;
try {
decode(lhs, bp);
} catch (ceph::buffer::error& e) {
logger().info("cmp_xattr: buffer error expection");
result = -EINVAL;
break;
}
result = do_xattr_cmp_u64(osd_op.op.xattr.cmp_op, lhs, xattr);
}
break;
default:
logger().info("bad cmp mode {}", osd_op.op.xattr.cmp_mode);
result = -EINVAL;
}
if (result == 0) {
logger().info("cmp_xattr: comparison returned false");
osd_op.rval = -ECANCELED;
} else {
osd_op.rval = result;
}
delta_stats.num_rd++;
delta_stats.num_rd_kb += shift_round_up(osd_op.op.xattr.value_len, 10);