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This commit is contained in:
Josh Durgin 2015-06-17 18:02:31 -07:00
commit 2314abbfb0
10 changed files with 227 additions and 84 deletions
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4
src/common/Mutex.cc
View File

@ -43,7 +43,7 @@ Mutex::Mutex(const std::string &n, bool r, bool ld,
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
pthread_mutex_init(&_m,&attr);
pthread_mutexattr_destroy(&attr);
if (g_lockdep)
if (lockdep && g_lockdep)
_register();
}
else if (lockdep) {
@ -76,7 +76,7 @@ Mutex::~Mutex() {
cct->get_perfcounters_collection()->remove(logger);
delete logger;
}
if (g_lockdep) {
if (lockdep && g_lockdep) {
lockdep_unregister(id);
}
}

184
src/librbd/ImageWatcher.cc
View File

@ -75,7 +75,7 @@ bool ImageWatcher::is_lock_owner() const {
}
int ImageWatcher::register_watch() {
ldout(m_image_ctx.cct, 10) << "registering image watcher" << dendl;
ldout(m_image_ctx.cct, 10) << this << " registering image watcher" << dendl;
RWLock::WLocker l(m_watch_lock);
assert(m_watch_state == WATCH_STATE_UNREGISTERED);
@ -91,7 +91,7 @@ int ImageWatcher::register_watch() {
}
int ImageWatcher::unregister_watch() {
ldout(m_image_ctx.cct, 10) << "unregistering image watcher" << dendl;
ldout(m_image_ctx.cct, 10) << this << " unregistering image watcher" << dendl;
{
Mutex::Locker l(m_aio_request_lock);
@ -152,25 +152,26 @@ int ImageWatcher::try_lock() {
iter->addr, sizeof(iter->addr)) == 0) &&
(locker_handle == iter->cookie)) {
Mutex::Locker l(m_owner_client_id_lock);
m_owner_client_id = ClientId(iter->watcher_id, locker_handle);
set_owner_client_id(ClientId(iter->watcher_id, locker_handle));
return 0;
}
}
if (m_image_ctx.blacklist_on_break_lock) {
ldout(m_image_ctx.cct, 1) << "blacklisting client: " << locker << "@"
<< locker_address << dendl;
ldout(m_image_ctx.cct, 1) << this << " blacklisting client: " << locker
<< "@" << locker_address << dendl;
librados::Rados rados(m_image_ctx.md_ctx);
r = rados.blacklist_add(locker_address,
m_image_ctx.blacklist_expire_seconds);
if (r < 0) {
lderr(m_image_ctx.cct) << "unable to blacklist client: "
lderr(m_image_ctx.cct) << this << " unable to blacklist client: "
<< cpp_strerror(r) << dendl;
return r;
}
}
ldout(m_image_ctx.cct, 5) << "breaking exclusive lock: " << locker << dendl;
ldout(m_image_ctx.cct, 5) << this << " breaking exclusive lock: " << locker
<< dendl;
r = rados::cls::lock::break_lock(&m_image_ctx.md_ctx,
m_image_ctx.header_oid, RBD_LOCK_NAME,
locker_cookie, locker);
@ -189,7 +190,7 @@ void ImageWatcher::request_lock(
{
Mutex::Locker l(m_aio_request_lock);
bool request_pending = !m_aio_requests.empty();
ldout(m_image_ctx.cct, 15) << "queuing aio request: " << c
ldout(m_image_ctx.cct, 15) << this << " queuing aio request: " << c
<< dendl;
c->get();
@ -201,7 +202,7 @@ void ImageWatcher::request_lock(
RWLock::RLocker l(m_watch_lock);
if (m_watch_state == WATCH_STATE_REGISTERED) {
ldout(m_image_ctx.cct, 10) << "requesting exclusive lock" << dendl;
ldout(m_image_ctx.cct, 15) << this << " requesting exclusive lock" << dendl;
// run notify request in finisher to avoid blocking aio path
FunctionContext *ctx = new FunctionContext(
@ -227,17 +228,18 @@ bool ImageWatcher::try_request_lock() {
m_image_ctx.owner_lock.get_read();
if (r < 0) {
ldout(m_image_ctx.cct, 5) << "failed to acquire exclusive lock:"
ldout(m_image_ctx.cct, 5) << this << " failed to acquire exclusive lock:"
<< cpp_strerror(r) << dendl;
return false;
}
if (is_lock_owner()) {
ldout(m_image_ctx.cct, 15) << "successfully acquired exclusive lock"
ldout(m_image_ctx.cct, 15) << this << " successfully acquired exclusive lock"
<< dendl;
} else {
ldout(m_image_ctx.cct, 15) << "unable to acquire exclusive lock, retrying"
<< dendl;
ldout(m_image_ctx.cct, 15) << this
<< " unable to acquire exclusive lock, retrying"
<< dendl;
}
return is_lock_owner();
}
@ -257,34 +259,34 @@ int ImageWatcher::get_lock_owner_info(entity_name_t *locker, std::string *cookie
}
if (lockers.empty()) {
ldout(m_image_ctx.cct, 20) << "no lockers detected" << dendl;
ldout(m_image_ctx.cct, 20) << this << " no lockers detected" << dendl;
return 0;
}
if (lock_tag != WATCHER_LOCK_TAG) {
ldout(m_image_ctx.cct, 5) << "locked by external mechanism: tag="
ldout(m_image_ctx.cct, 5) << this << " locked by external mechanism: tag="
<< lock_tag << dendl;
return -EBUSY;
}
if (lock_type == LOCK_SHARED) {
ldout(m_image_ctx.cct, 5) << "shared lock type detected" << dendl;
ldout(m_image_ctx.cct, 5) << this << " shared lock type detected" << dendl;
return -EBUSY;
}
std::map<rados::cls::lock::locker_id_t,
rados::cls::lock::locker_info_t>::iterator iter = lockers.begin();
if (!decode_lock_cookie(iter->first.cookie, handle)) {
ldout(m_image_ctx.cct, 5) << "locked by external mechanism: cookie="
<< iter->first.cookie << dendl;
ldout(m_image_ctx.cct, 5) << this << " locked by external mechanism: "
<< "cookie=" << iter->first.cookie << dendl;
return -EBUSY;
}
*locker = iter->first.locker;
*cookie = iter->first.cookie;
*address = stringify(iter->second.addr);
ldout(m_image_ctx.cct, 10) << "retrieved exclusive locker: " << *locker
<< "@" << *address << dendl;
ldout(m_image_ctx.cct, 10) << this << " retrieved exclusive locker: "
<< *locker << "@" << *address << dendl;
return 0;
}
@ -297,13 +299,13 @@ int ImageWatcher::lock() {
return r;
}
ldout(m_image_ctx.cct, 10) << "acquired exclusive lock" << dendl;
ldout(m_image_ctx.cct, 10) << this << " acquired exclusive lock" << dendl;
m_lock_owner_state = LOCK_OWNER_STATE_LOCKED;
ClientId owner_client_id = get_client_id();
{
Mutex::Locker l(m_owner_client_id_lock);
m_owner_client_id = owner_client_id;
set_owner_client_id(owner_client_id);
}
if (m_image_ctx.object_map.enabled()) {
@ -348,12 +350,12 @@ int ImageWatcher::unlock()
return 0;
}
ldout(m_image_ctx.cct, 10) << "releasing exclusive lock" << dendl;
ldout(m_image_ctx.cct, 10) << this << " releasing exclusive lock" << dendl;
m_lock_owner_state = LOCK_OWNER_STATE_NOT_LOCKED;
int r = rados::cls::lock::unlock(&m_image_ctx.md_ctx, m_image_ctx.header_oid,
RBD_LOCK_NAME, encode_lock_cookie());
if (r < 0 && r != -ENOENT) {
lderr(m_image_ctx.cct) << "failed to release exclusive lock: "
lderr(m_image_ctx.cct) << this << " failed to release exclusive lock: "
<< cpp_strerror(r) << dendl;
return r;
}
@ -362,6 +364,9 @@ int ImageWatcher::unlock()
m_image_ctx.object_map.unlock();
}
Mutex::Locker l(m_owner_client_id_lock);
set_owner_client_id(ClientId());
FunctionContext *ctx = new FunctionContext(
boost::bind(&ImageWatcher::notify_released_lock, this));
m_task_finisher->queue(TASK_CODE_RELEASED_LOCK, ctx);
@ -371,26 +376,27 @@ int ImageWatcher::unlock()
bool ImageWatcher::release_lock()
{
assert(m_image_ctx.owner_lock.is_wlocked());
ldout(m_image_ctx.cct, 10) << "releasing exclusive lock by request" << dendl;
ldout(m_image_ctx.cct, 10) << this << " releasing exclusive lock by request"
<< dendl;
if (!is_lock_owner()) {
return false;
}
prepare_unlock();
m_image_ctx.owner_lock.put_write();
m_image_ctx.cancel_async_requests();
m_image_ctx.flush_async_operations();
m_image_ctx.owner_lock.get_write();
if (!is_lock_owner()) {
return false;
}
{
RWLock::WLocker l2(m_image_ctx.md_lock);
RWLock::RLocker owner_locker(m_image_ctx.owner_lock);
RWLock::WLocker md_locker(m_image_ctx.md_lock);
librbd::_flush(&m_image_ctx);
}
m_image_ctx.owner_lock.get_write();
if (!is_lock_owner()) {
return false;
}
unlock();
return true;
}
@ -410,7 +416,7 @@ void ImageWatcher::schedule_async_progress(const AsyncRequestId &request,
int ImageWatcher::notify_async_progress(const AsyncRequestId &request,
uint64_t offset, uint64_t total) {
ldout(m_image_ctx.cct, 20) << "remote async request progress: "
ldout(m_image_ctx.cct, 20) << this << " remote async request progress: "
<< request << " @ " << offset
<< "/" << total << dendl;
@ -430,7 +436,7 @@ void ImageWatcher::schedule_async_complete(const AsyncRequestId &request,
int ImageWatcher::notify_async_complete(const AsyncRequestId &request,
int r) {
ldout(m_image_ctx.cct, 20) << "remote async request finished: "
ldout(m_image_ctx.cct, 20) << this << " remote async request finished: "
<< request << " = " << r << dendl;
bufferlist bl;
@ -443,7 +449,7 @@ int ImageWatcher::notify_async_complete(const AsyncRequestId &request,
int ret = m_image_ctx.md_ctx.notify2(m_image_ctx.header_oid, bl,
NOTIFY_TIMEOUT, NULL);
if (ret < 0) {
lderr(m_image_ctx.cct) << "failed to notify async complete: "
lderr(m_image_ctx.cct) << this << " failed to notify async complete: "
<< cpp_strerror(ret) << dendl;
if (ret == -ETIMEDOUT) {
schedule_async_complete(request, r);
@ -541,6 +547,7 @@ bool ImageWatcher::decode_lock_cookie(const std::string &tag,
}
void ImageWatcher::schedule_retry_aio_requests(bool use_timer) {
m_task_finisher->cancel(TASK_CODE_REQUEST_LOCK);
Context *ctx = new FunctionContext(boost::bind(
&ImageWatcher::retry_aio_requests, this));
if (use_timer) {
@ -559,11 +566,12 @@ void ImageWatcher::retry_aio_requests() {
lock_request_restarts.swap(m_aio_requests);
}
ldout(m_image_ctx.cct, 15) << "retrying pending aio requests" << dendl;
ldout(m_image_ctx.cct, 15) << this << " retrying pending aio requests"
<< dendl;
for (std::vector<AioRequest>::iterator iter = lock_request_restarts.begin();
iter != lock_request_restarts.end(); ++iter) {
ldout(m_image_ctx.cct, 20) << "retrying aio request: " << iter->second
<< dendl;
ldout(m_image_ctx.cct, 20) << this << " retrying aio request: "
<< iter->second << dendl;
iter->first(iter->second);
iter->second->put();
}
@ -585,6 +593,13 @@ void ImageWatcher::cancel_async_requests() {
m_async_requests.clear();
}
void ImageWatcher::set_owner_client_id(const WatchNotify::ClientId& client_id) {
assert(m_owner_client_id_lock.is_locked());
m_owner_client_id = client_id;
ldout(m_image_ctx.cct, 10) << this << " current lock owner: "
<< m_owner_client_id << dendl;
}
ClientId ImageWatcher::get_client_id() {
RWLock::RLocker l(m_watch_lock);
return ClientId(m_image_ctx.md_ctx.get_instance_id(), m_watch_handle);
@ -596,14 +611,14 @@ void ImageWatcher::notify_release_lock() {
}
void ImageWatcher::notify_released_lock() {
ldout(m_image_ctx.cct, 10) << "notify released lock" << dendl;
ldout(m_image_ctx.cct, 10) << this << " notify released lock" << dendl;
bufferlist bl;
::encode(NotifyMessage(ReleasedLockPayload(get_client_id())), bl);
m_image_ctx.md_ctx.notify2(m_image_ctx.header_oid, bl, NOTIFY_TIMEOUT, NULL);
}
void ImageWatcher::notify_request_lock() {
ldout(m_image_ctx.cct, 10) << "notify request lock" << dendl;
ldout(m_image_ctx.cct, 10) << this << " notify request lock" << dendl;
m_task_finisher->cancel(TASK_CODE_RETRY_AIO_REQUESTS);
m_image_ctx.owner_lock.get_read();
@ -620,12 +635,20 @@ void ImageWatcher::notify_request_lock() {
m_image_ctx.owner_lock.put_read();
if (r == -ETIMEDOUT) {
ldout(m_image_ctx.cct, 5) << "timed out requesting lock: retrying" << dendl;
ldout(m_image_ctx.cct, 5) << this << "timed out requesting lock: retrying"
<< dendl;
retry_aio_requests();
} else if (r < 0) {
lderr(m_image_ctx.cct) << "error requesting lock: " << cpp_strerror(r)
<< dendl;
lderr(m_image_ctx.cct) << this << " error requesting lock: "
<< cpp_strerror(r) << dendl;
schedule_retry_aio_requests(true);
} else {
// lock owner acked -- but resend if we don't see them release the lock
int retry_timeout = m_image_ctx.cct->_conf->client_notify_timeout;
FunctionContext *ctx = new FunctionContext(
boost::bind(&ImageWatcher::notify_request_lock, this));
m_task_finisher->add_event_after(TASK_CODE_REQUEST_LOCK,
retry_timeout, ctx);
}
}
@ -640,7 +663,7 @@ int ImageWatcher::notify_lock_owner(bufferlist &bl) {
&response_bl);
m_image_ctx.owner_lock.get_read();
if (r < 0 && r != -ETIMEDOUT) {
lderr(m_image_ctx.cct) << "lock owner notification failed: "
lderr(m_image_ctx.cct) << this << " lock owner notification failed: "
<< cpp_strerror(r) << dendl;
return r;
}
@ -652,7 +675,7 @@ int ImageWatcher::notify_lock_owner(bufferlist &bl) {
bufferlist::iterator iter = response_bl.begin();
::decode(responses, iter);
} catch (const buffer::error &err) {
lderr(m_image_ctx.cct) << "failed to decode response" << dendl;
lderr(m_image_ctx.cct) << this << " failed to decode response" << dendl;
return -EINVAL;
}
}
@ -662,7 +685,8 @@ int ImageWatcher::notify_lock_owner(bufferlist &bl) {
for (responses_t::iterator i = responses.begin(); i != responses.end(); ++i) {
if (i->second.length() > 0) {
if (lock_owner_responded) {
lderr(m_image_ctx.cct) << "duplicate lock owners detected" << dendl;
lderr(m_image_ctx.cct) << this << " duplicate lock owners detected"
<< dendl;
return -EIO;
}
lock_owner_responded = true;
@ -671,7 +695,7 @@ int ImageWatcher::notify_lock_owner(bufferlist &bl) {
}
if (!lock_owner_responded) {
lderr(m_image_ctx.cct) << "no lock owners detected" << dendl;
lderr(m_image_ctx.cct) << this << " no lock owners detected" << dendl;
return -ETIMEDOUT;
}
@ -703,7 +727,7 @@ void ImageWatcher::async_request_timed_out(const AsyncRequestId &id) {
std::map<AsyncRequestId, AsyncRequest>::iterator it =
m_async_requests.find(id);
if (it != m_async_requests.end()) {
ldout(m_image_ctx.cct, 10) << "request timed-out: " << id << dendl;
ldout(m_image_ctx.cct, 10) << this << " request timed-out: " << id << dendl;
it->second.first->complete(-ERESTART);
}
}
@ -713,7 +737,8 @@ int ImageWatcher::notify_async_request(const AsyncRequestId &async_request_id,
ProgressContext& prog_ctx) {
assert(m_image_ctx.owner_lock.is_locked());
ldout(m_image_ctx.cct, 10) << "async request: " << async_request_id << dendl;
ldout(m_image_ctx.cct, 10) << this << " async request: " << async_request_id
<< dendl;
C_SaferCond ctx;
@ -767,7 +792,7 @@ void ImageWatcher::cleanup_async_request(const AsyncRequestId& async_request_id,
void ImageWatcher::handle_payload(const HeaderUpdatePayload &payload,
bufferlist *out) {
ldout(m_image_ctx.cct, 10) << "image header updated" << dendl;
ldout(m_image_ctx.cct, 10) << this << " image header updated" << dendl;
Mutex::Locker lictx(m_image_ctx.refresh_lock);
++m_image_ctx.refresh_seq;
@ -776,14 +801,15 @@ void ImageWatcher::handle_payload(const HeaderUpdatePayload &payload,
void ImageWatcher::handle_payload(const AcquiredLockPayload &payload,
bufferlist *out) {
ldout(m_image_ctx.cct, 10) << "image exclusively locked announcement" << dendl;
ldout(m_image_ctx.cct, 10) << this << " image exclusively locked announcement"
<< dendl;
if (payload.client_id.is_valid()) {
Mutex::Locker l(m_owner_client_id_lock);
if (payload.client_id == m_owner_client_id) {
// we already know that the remote client is the owner
return;
}
m_owner_client_id = payload.client_id;
set_owner_client_id(payload.client_id);
}
RWLock::RLocker l(m_image_ctx.owner_lock);
@ -795,13 +821,16 @@ void ImageWatcher::handle_payload(const AcquiredLockPayload &payload,
void ImageWatcher::handle_payload(const ReleasedLockPayload &payload,
bufferlist *out) {
ldout(m_image_ctx.cct, 10) << "exclusive lock released" << dendl;
ldout(m_image_ctx.cct, 10) << this << " exclusive lock released" << dendl;
if (payload.client_id.is_valid()) {
Mutex::Locker l(m_owner_client_id_lock);
if (payload.client_id != m_owner_client_id) {
ldout(m_image_ctx.cct, 10) << this << " unexpected owner: "
<< payload.client_id << " != "
<< m_owner_client_id << dendl;
return;
}
m_owner_client_id = ClientId();
set_owner_client_id(ClientId());
}
RWLock::RLocker l(m_image_ctx.owner_lock);
@ -813,7 +842,7 @@ void ImageWatcher::handle_payload(const ReleasedLockPayload &payload,
void ImageWatcher::handle_payload(const RequestLockPayload &payload,
bufferlist *out) {
ldout(m_image_ctx.cct, 10) << "exclusive lock requested" << dendl;
ldout(m_image_ctx.cct, 10) << this << " exclusive lock requested" << dendl;
if (payload.client_id == get_client_id()) {
return;
}
@ -828,10 +857,10 @@ void ImageWatcher::handle_payload(const RequestLockPayload &payload,
if (!m_owner_client_id.is_valid()) {
return;
}
m_owner_client_id = ClientId();
}
ldout(m_image_ctx.cct, 10) << "queuing release of exclusive lock" << dendl;
ldout(m_image_ctx.cct, 10) << this << " queuing release of exclusive lock"
<< dendl;
FunctionContext *ctx = new FunctionContext(
boost::bind(&ImageWatcher::notify_release_lock, this));
m_task_finisher->queue(TASK_CODE_RELEASING_LOCK, ctx);
@ -844,7 +873,7 @@ void ImageWatcher::handle_payload(const AsyncProgressPayload &payload,
std::map<AsyncRequestId, AsyncRequest>::iterator req_it =
m_async_requests.find(payload.async_request_id);
if (req_it != m_async_requests.end()) {
ldout(m_image_ctx.cct, 20) << "request progress: "
ldout(m_image_ctx.cct, 20) << this << " request progress: "
<< payload.async_request_id << " @ "
<< payload.offset << "/" << payload.total
<< dendl;
@ -859,7 +888,7 @@ void ImageWatcher::handle_payload(const AsyncCompletePayload &payload,
std::map<AsyncRequestId, AsyncRequest>::iterator req_it =
m_async_requests.find(payload.async_request_id);
if (req_it != m_async_requests.end()) {
ldout(m_image_ctx.cct, 10) << "request finished: "
ldout(m_image_ctx.cct, 10) << this << " request finished: "
<< payload.async_request_id << "="
<< payload.result << dendl;
req_it->second.first->complete(payload.result);
@ -877,11 +906,11 @@ void ImageWatcher::handle_payload(const FlattenPayload &payload,
int r = prepare_async_request(payload.async_request_id, &new_request,
&ctx, &prog_ctx);
if (new_request) {
ldout(m_image_ctx.cct, 10) << "remote flatten request: "
ldout(m_image_ctx.cct, 10) << this << " remote flatten request: "
<< payload.async_request_id << dendl;
r = librbd::async_flatten(&m_image_ctx, ctx, *prog_ctx);
if (r < 0) {
lderr(m_image_ctx.cct) << "remove flatten request failed: "
lderr(m_image_ctx.cct) << this << " remove flatten request failed: "
<< cpp_strerror(r) << dendl;
cleanup_async_request(payload.async_request_id, ctx);
}
@ -901,12 +930,12 @@ void ImageWatcher::handle_payload(const ResizePayload &payload,
int r = prepare_async_request(payload.async_request_id, &new_request,
&ctx, &prog_ctx);
if (new_request) {
ldout(m_image_ctx.cct, 10) << "remote resize request: "
ldout(m_image_ctx.cct, 10) << this << " remote resize request: "
<< payload.async_request_id << " "
<< payload.size << dendl;
r = librbd::async_resize(&m_image_ctx, ctx, payload.size, *prog_ctx);
if (r < 0) {
lderr(m_image_ctx.cct) << "remove resize request failed: "
lderr(m_image_ctx.cct) << this << " remove resize request failed: "
<< cpp_strerror(r) << dendl;
cleanup_async_request(payload.async_request_id, ctx);
}
@ -920,7 +949,7 @@ void ImageWatcher::handle_payload(const SnapCreatePayload &payload,
bufferlist *out) {
RWLock::RLocker l(m_image_ctx.owner_lock);
if (m_lock_owner_state == LOCK_OWNER_STATE_LOCKED) {
ldout(m_image_ctx.cct, 10) << "remote snap_create request: "
ldout(m_image_ctx.cct, 10) << this << " remote snap_create request: "
<< payload.snap_name << dendl;
int r = librbd::snap_create_helper(&m_image_ctx, NULL,
payload.snap_name.c_str());
@ -933,7 +962,7 @@ void ImageWatcher::handle_payload(const SnapRemovePayload &payload,
bufferlist *out) {
RWLock::RLocker l(m_image_ctx.owner_lock);
if (m_lock_owner_state == LOCK_OWNER_STATE_LOCKED) {
ldout(m_image_ctx.cct, 10) << "remote snap_remove request: "
ldout(m_image_ctx.cct, 10) << this << " remote snap_remove request: "
<< payload.snap_name << dendl;
int r = librbd::snap_remove_helper(&m_image_ctx, NULL,
payload.snap_name.c_str());
@ -952,11 +981,13 @@ void ImageWatcher::handle_payload(const RebuildObjectMapPayload& payload,
int r = prepare_async_request(payload.async_request_id, &new_request,
&ctx, &prog_ctx);
if (new_request) {
ldout(m_image_ctx.cct, 10) << "remote rebuild object map request: "
ldout(m_image_ctx.cct, 10) << this
<< " remote rebuild object map request: "
<< payload.async_request_id << dendl;
r = librbd::async_rebuild_object_map(&m_image_ctx, ctx, *prog_ctx);
if (r < 0) {
lderr(m_image_ctx.cct) << "remove rebuild object map request failed: "
lderr(m_image_ctx.cct) << this
<< " remove rebuild object map request failed: "
<< cpp_strerror(r) << dendl;
cleanup_async_request(payload.async_request_id, ctx);
}
@ -985,23 +1016,23 @@ void ImageWatcher::handle_notify(uint64_t notify_id, uint64_t handle,
bufferlist::iterator iter = bl.begin();
::decode(notify_message, iter);
} catch (const buffer::error &err) {
lderr(m_image_ctx.cct) << "error decoding image notification: "
lderr(m_image_ctx.cct) << this << " error decoding image notification: "
<< err.what() << dendl;
return;
}
}
apply_visitor(HandlePayloadVisitor(this, notify_id, handle),
notify_message.payload);
notify_message.payload);
}
void ImageWatcher::handle_error(uint64_t handle, int err) {
lderr(m_image_ctx.cct) << "image watch failed: " << handle << ", "
lderr(m_image_ctx.cct) << this << " image watch failed: " << handle << ", "
<< cpp_strerror(err) << dendl;
{
Mutex::Locker l(m_owner_client_id_lock);
m_owner_client_id = ClientId();
set_owner_client_id(ClientId());
}
RWLock::WLocker l(m_watch_lock);
@ -1021,7 +1052,7 @@ void ImageWatcher::acknowledge_notify(uint64_t notify_id, uint64_t handle,
}
void ImageWatcher::reregister_watch() {
ldout(m_image_ctx.cct, 10) << "re-registering image watch" << dendl;
ldout(m_image_ctx.cct, 10) << this << " re-registering image watch" << dendl;
{
RWLock::WLocker l(m_image_ctx.owner_lock);
@ -1041,7 +1072,7 @@ void ImageWatcher::reregister_watch() {
r = m_image_ctx.md_ctx.watch2(m_image_ctx.header_oid,
&m_watch_handle, &m_watch_ctx);
if (r < 0) {
lderr(m_image_ctx.cct) << "failed to re-register image watch: "
lderr(m_image_ctx.cct) << this << " failed to re-register image watch: "
<< cpp_strerror(r) << dendl;
if (r != -ESHUTDOWN) {
FunctionContext *ctx = new FunctionContext(boost::bind(
@ -1059,10 +1090,11 @@ void ImageWatcher::reregister_watch() {
if (was_lock_owner) {
r = try_lock();
if (r == -EBUSY) {
ldout(m_image_ctx.cct, 5) << "lost image lock while re-registering "
<< "image watch" << dendl;
ldout(m_image_ctx.cct, 5) << this << "lost image lock while "
<< "re-registering image watch" << dendl;
} else if (r < 0) {
lderr(m_image_ctx.cct) << "failed to lock image while re-registering "
lderr(m_image_ctx.cct) << this
<< "failed to lock image while re-registering "
<< "image watch" << cpp_strerror(r) << dendl;
}
}

1
src/librbd/ImageWatcher.h
View File

@ -222,6 +222,7 @@ namespace librbd {
void schedule_cancel_async_requests();
void cancel_async_requests();
void set_owner_client_id(const WatchNotify::ClientId &client_id);
WatchNotify::ClientId get_client_id();
void notify_release_lock();

6
src/librbd/WatchNotifyTypes.cc
View File

@ -423,6 +423,12 @@ std::ostream &operator<<(std::ostream &out,
return out;
}
std::ostream &operator<<(std::ostream &out,
const librbd::WatchNotify::ClientId &client_id) {
out << "[" << client_id.gid << "," << client_id.handle << "]";
return out;
}
std::ostream &operator<<(std::ostream &out,
const librbd::WatchNotify::AsyncRequestId &request) {
out << "[" << request.client_id.gid << "," << request.client_id.handle << ","

2
src/librbd/WatchNotifyTypes.h
View File

@ -259,6 +259,8 @@ struct ResponseMessage {
std::ostream &operator<<(std::ostream &out,
const librbd::WatchNotify::NotifyOp &op);
std::ostream &operator<<(std::ostream &out,
const librbd::WatchNotify::ClientId &client);
std::ostream &operator<<(std::ostream &out,
const librbd::WatchNotify::AsyncRequestId &request);

3
src/test/librados_test_stub/TestIoCtxImpl.cc
View File

@ -247,7 +247,8 @@ int TestIoCtxImpl::unwatch(uint64_t handle) {
int TestIoCtxImpl::watch(const std::string& o, uint64_t *handle,
librados::WatchCtx *ctx, librados::WatchCtx2 *ctx2) {
return m_client->get_watch_notify().watch(o, handle, ctx, ctx2);
return m_client->get_watch_notify().watch(o, get_instance_id(), handle, ctx,
ctx2);
}
int TestIoCtxImpl::execute_aio_operations(const std::string& oid,

8
src/test/librados_test_stub/TestWatchNotify.cc
View File

@ -50,7 +50,7 @@ int TestWatchNotify::list_watchers(const std::string& o,
it != watcher->watch_handles.end(); ++it) {
obj_watch_t obj;
strcpy(obj.addr, ":/0");
obj.watcher_id = static_cast<int64_t>(it->second.handle);
obj.watcher_id = static_cast<int64_t>(it->second.instance_id);
obj.cookie = it->second.handle;
obj.timeout_seconds = 30;
out_watchers->push_back(obj);
@ -113,12 +113,14 @@ void TestWatchNotify::notify_ack(const std::string& o, uint64_t notify_id,
notify_handle->cond.Signal();
}
int TestWatchNotify::watch(const std::string& o, uint64_t *handle,
librados::WatchCtx *ctx, librados::WatchCtx2 *ctx2) {
int TestWatchNotify::watch(const std::string& o, uint64_t instance_id,
uint64_t *handle, librados::WatchCtx *ctx,
librados::WatchCtx2 *ctx2) {
SharedWatcher watcher = get_watcher(o);
RWLock::WLocker l(watcher->lock);
WatchHandle watch_handle;
watch_handle.instance_id = instance_id;
watch_handle.handle = ++m_handle;
watch_handle.watch_ctx = ctx;
watch_handle.watch_ctx2 = ctx2;

3
src/test/librados_test_stub/TestWatchNotify.h
View File

@ -35,6 +35,7 @@ public:
typedef std::map<uint64_t, SharedNotifyHandle> NotifyHandles;
struct WatchHandle {
uint64_t instance_id;
uint64_t handle;
librados::WatchCtx* watch_ctx;
librados::WatchCtx2* watch_ctx2;
@ -60,7 +61,7 @@ public:
uint64_t timeout_ms, bufferlist *pbl);
void notify_ack(const std::string& o, uint64_t notify_id,
uint64_t handle, uint64_t gid, bufferlist& bl);
int watch(const std::string& o, uint64_t *handle,
int watch(const std::string& o, uint64_t instance_id, uint64_t *handle,
librados::WatchCtx *ctx, librados::WatchCtx2 *ctx2);
int unwatch(uint64_t handle);

45
src/test/librbd/test_ImageWatcher.cc
View File

@ -192,7 +192,8 @@ public:
Mutex::Locker l(m_callback_lock);
int r = 0;
while (!m_aio_completions.empty() &&
m_aio_completion_restarts < m_expected_aio_restarts) {
(m_expected_aio_restarts == 0 ||
m_aio_completion_restarts < m_expected_aio_restarts)) {
r = m_callback_cond.WaitInterval(ictx.cct, m_callback_lock,
utime_t(10, 0));
if (r != 0) {
@ -601,6 +602,7 @@ TEST_F(TestImageWatcher, RequestLockTimedOut) {
m_notify_acks = boost::assign::list_of(
std::make_pair(NOTIFY_OP_REQUEST_LOCK, bufferlist()));
m_expected_aio_restarts = 1;
{
RWLock::WLocker l(ictx->owner_lock);
ictx->image_watcher->request_lock(
@ -616,6 +618,45 @@ TEST_F(TestImageWatcher, RequestLockTimedOut) {
ASSERT_TRUE(wait_for_aio_completions(*ictx));
}
TEST_F(TestImageWatcher, RequestLockIgnored) {
REQUIRE_FEATURE(RBD_FEATURE_EXCLUSIVE_LOCK);
librbd::ImageCtx *ictx;
ASSERT_EQ(0, open_image(m_image_name, &ictx));
ASSERT_EQ(0, register_image_watch(*ictx));
ASSERT_EQ(0, lock_image(*ictx, LOCK_EXCLUSIVE,
"auto " + stringify(m_watch_ctx->get_handle())));
m_notify_acks = boost::assign::list_of(
std::make_pair(NOTIFY_OP_REQUEST_LOCK, create_response_message(0)));
int orig_notify_timeout = ictx->cct->_conf->client_notify_timeout;
ictx->cct->_conf->set_val("client_notify_timeout", "0");
BOOST_SCOPE_EXIT( (ictx)(orig_notify_timeout) ) {
ictx->cct->_conf->set_val("client_notify_timeout",
stringify(orig_notify_timeout));
} BOOST_SCOPE_EXIT_END;
{
RWLock::WLocker l(ictx->owner_lock);
ictx->image_watcher->request_lock(
boost::bind(&TestImageWatcher::handle_restart_aio, this, ictx, _1),
create_aio_completion(*ictx));
}
ASSERT_TRUE(wait_for_notifies(*ictx));
NotifyOps expected_notify_ops;
expected_notify_ops += NOTIFY_OP_REQUEST_LOCK;
ASSERT_EQ(expected_notify_ops, m_notifies);
// after the request times out -- it will be resent
ASSERT_TRUE(wait_for_notifies(*ictx));
ASSERT_EQ(expected_notify_ops, m_notifies);
ASSERT_EQ(0, unlock_image());
ASSERT_TRUE(wait_for_aio_completions(*ictx));
}
TEST_F(TestImageWatcher, RequestLockTryLockRace) {
REQUIRE_FEATURE(RBD_FEATURE_EXCLUSIVE_LOCK);
@ -628,6 +669,7 @@ TEST_F(TestImageWatcher, RequestLockTryLockRace) {
m_notify_acks = boost::assign::list_of(
std::make_pair(NOTIFY_OP_REQUEST_LOCK, create_response_message(0)));
m_expected_aio_restarts = 1;
{
RWLock::WLocker l(ictx->owner_lock);
ictx->image_watcher->request_lock(
@ -663,6 +705,7 @@ TEST_F(TestImageWatcher, RequestLockPreTryLockFailed) {
ASSERT_EQ(0, open_image(m_image_name, &ictx));
ASSERT_EQ(0, lock_image(*ictx, LOCK_SHARED, "manually 1234"));
m_expected_aio_restarts = 1;
{
RWLock::WLocker l(ictx->owner_lock);
ictx->image_watcher->request_lock(

55
src/test/librbd/test_librbd.cc
View File

@ -3049,3 +3049,58 @@ TEST_F(TestLibRBD, BlockingAIO)
expected_bl.append(std::string(128, '\0'));
ASSERT_TRUE(expected_bl.contents_equal(read_bl));
}
TEST_F(TestLibRBD, ExclusiveLockTransition)
{
REQUIRE_FEATURE(RBD_FEATURE_EXCLUSIVE_LOCK);
librados::IoCtx ioctx;
ASSERT_EQ(0, _rados.ioctx_create(m_pool_name.c_str(), ioctx));
librbd::RBD rbd;
std::string name = get_temp_image_name();
uint64_t size = 1 << 18;
int order = 12;
ASSERT_EQ(0, create_image_pp(rbd, ioctx, name.c_str(), size, &order));
librbd::Image image1;
ASSERT_EQ(0, rbd.open(ioctx, image1, name.c_str(), NULL));
librbd::Image image2;
ASSERT_EQ(0, rbd.open(ioctx, image2, name.c_str(), NULL));
std::list<librbd::RBD::AioCompletion *> comps;
ceph::bufferlist bl;
bl.append(std::string(1 << order, '1'));
for (size_t object_no = 0; object_no < (size >> 12); ++object_no) {
librbd::RBD::AioCompletion *comp = new librbd::RBD::AioCompletion(NULL,
NULL);
comps.push_back(comp);
if (object_no % 2 == 0) {
ASSERT_EQ(0, image1.aio_write(object_no << order, bl.length(), bl, comp));
} else {
ASSERT_EQ(0, image2.aio_write(object_no << order, bl.length(), bl, comp));
}
}
while (!comps.empty()) {
librbd::RBD::AioCompletion *comp = comps.front();
comps.pop_front();
ASSERT_EQ(0, comp->wait_for_complete());
ASSERT_EQ(1, comp->is_complete());
}
librbd::Image image3;
ASSERT_EQ(0, rbd.open(ioctx, image3, name.c_str(), NULL));
for (size_t object_no = 0; object_no < (size >> 12); ++object_no) {
bufferlist read_bl;
ASSERT_EQ(bl.length(), image3.read(object_no << order, bl.length(),
read_bl));
ASSERT_TRUE(bl.contents_equal(read_bl));
}
ASSERT_PASSED(validate_object_map, image1);
ASSERT_PASSED(validate_object_map, image2);
ASSERT_PASSED(validate_object_map, image3);
}