mon: add 'pg dump delta' to get just the rate info

Still include it in the basic 'pg dump summary' info.

Signed-off-by: Sage Weil <sage@inktank.com>
Merge pull request #523 from dachary/master

doc: fix erasure code formatting warnings and errors
doc: Fixed typo.

fixes: #5968

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
Merge pull request #524 from ceph/wip-mon-delta

mon: add 'pg dump delta' to get just the rate info

Reviewed-by: Samuel Just <sam.just@inktank.com>
doc: Clarified quorum requirements.

fixes: #5412

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
Merge branch 'master' of https://github.com/ceph/ceph
rgw: change cache / watch-notify init sequence

Fixes: #6046
We were initializing the watch-notify (through the cache
init) before reading the zone info which was much too
early, as we didn't have the control pool name yet. Now
simplifying init/cleanup a bit, cache doesn't call watch/notify
init and cleanup directly, but rather states its need
through a virtual callback.

Signed-off-by: Yehuda Sadeh <yehuda@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>
objecter: resend unfinished lingers when osdmap is no longer paused

Plain Ops that haven't finished yet need to be resent if the osdmap
transitions from full or paused to unpaused.  If these Ops are
triggered by LingerOps, they will be cancelled instead (since
should_resend = false), but the LingerOps that triggered them will not
be resent.

Fix this by checking the registered flag for all linger ops, and
resending any of them that aren't paused anymore.

Fixes: #6070
Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
Reviewed-by: Sage Weil <sage.weil@inktank.com>
objecter: fix keys of dump_linger_ops

The registering flag no longer exists, and registered was using the
wrong property due to a copy-paste error.

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
Reviewed-by: Sage Weil <sage.weil@inktank.com>
Merge branch 'next'
sharedptr_registry: add a variant of get_next() and the empty() method

The SharedPtrRegistry::get_next() method with a value of type VPtr
instead of V is added because it is sometime more convenient to not
copy the value when walking the registry. The
SharedPtrRegistry::empty() predicate method is added.

Signed-off-by: Loic Dachary <loic@dachary.org>
PG: remove unused PG::_cond

http://tracker.ceph.com/issues/5510 refs #5510

Signed-off-by: Loic Dachary <loic@dachary.org>
ReplicatedPG: add Mutex to protect snapset_contexts

snapset_contexts_locks is added and locked in each function where
snapset_contexts or the SnapSetContext::ref data member needs to be
accessed or modified.

http://tracker.ceph.com/issues/5510 refs #5510

Signed-off-by: Loic Dachary <loic@dachary.org>
ReplicatedPG: ObjectContext is made compatible with SharedPtrRegistry

When creating a new object SharedPtrRegistry::lookup_or_create uses
the default ObjectContext constructor with no argument. The existing
ObjectContext constructor is modified to have no argument and the
initialization that was previously done within the constructor is done
by the caller (that only happens three times).

The ObjectContext::get method is removed: its only purpose is to
increment the ref.

The ObjectContext::registered data member is removed as well as all
the associated assert()

The ObjectContext::destructor_callback data member Context is added
and called by the destructor. It will allow the caller to perform
additional cleanup, if necessary.

All ObjectContext * data members are replaced with shared_ptr.

http://tracker.ceph.com/issues/5510 refs #5510

Signed-off-by: Loic Dachary <loic@dachary.org>
ReplicatedPG: ObjectContext * becomes ObjectContextRef

The map of hobject_t to ObjectContext is made a
SharedPtrRegistry owned by ReplicatedPG

    -  map<hobject_t, ObjectContext*> object_contexts;
    +  SharedPtrRegistry<hobject_t, ObjectContext> object_contexts;

All ObjectContext pointers are changed into ObjectContextRef, i.e.
shared_ptr.

In Watch.h std::tr1::shared_ptr<ObjectContext> is used instead
of ObjectContextRef because Watch.h is included before it is
defined.

http://tracker.ceph.com/issues/5510 refs #5510

Signed-off-by: Loic Dachary <loic@dachary.org>
ReplicatedPG: remove reference counting logic

ObjectContext manual reference counting and managing the
object_contexts object involves calls to

* obc->ref++ and obc->get()
* put_object_context and put_object_contexts
* register_object_context
* assertions on obc->registered

They are all removed because SharedPtrRegistry provides the
same service.

http://tracker.ceph.com/issues/5510 refs #5510

Signed-off-by: Loic Dachary <loic@dachary.org>
ReplicatedPG: remove lookup_object_context method

Both ReplicatedPG::lookup_object_context and
ReplicatedPG::_lookup_object_context methods are provided by
SharedPtrRegistry.

http://tracker.ceph.com/issues/5510 refs #5510

Signed-off-by: Loic Dachary <loic@dachary.org>
ReplicatedPG: replace map iterators with SharedPtrRegistry::get_next

SharedPtrRegistry does not provide an iterator equivalent to

    map<hobject_t, ObjectContext*>::iterator i

It is replaced with a thread safe get_next method roughly used
as follows:

    pair<hobject_t, ObjectContextRef> i;
    while (object_contexts.get_next(i.first, &i))

All occurences of the iterator are replaced with get_next style
traversal.

http://tracker.ceph.com/issues/5510 refs #5510

Signed-off-by: Loic Dachary <loic@dachary.org>
ReplicatedPG: add Context to cleanup the PG after an ObjectContext deletion

ReplicatedPG::C_PG_ObjectContext is added to encapsulate a
call to ReplicatedPG::object_context_destructor_callback method
which is reponsible for

  * manually de-allocating the SnapSetContext of the ObjectContext if
    any. It will eventually be managed by a SharedPtrRegistry.

ReplicatedPG::C_PG_ObjectContext must be added to the destructor_callback
member of ObjectContext immediately after it is created.

http://tracker.ceph.com/issues/5510 refs #5510

Signed-off-by: Loic Dachary <loic@dachary.org>
ReplicatedPG: replace object_contexts.find with object_contexts.lookup

The std::map equivalent of find is SharedPtrRegistry::lookup

http://tracker.ceph.com/issues/5510 refs #5510

Signed-off-by: Loic Dachary <loic@dachary.org>