X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Flibrbd%2Fobject_map%2FSnapshotRemoveRequest.cc;fp=src%2Fceph%2Fsrc%2Flibrbd%2Fobject_map%2FSnapshotRemoveRequest.cc;h=0000000000000000000000000000000000000000;hb=7da45d65be36d36b880cc55c5036e96c24b53f00;hp=821dd5b8781bb6137470c147032c16f3c171cc01;hpb=691462d09d0987b47e112d6ee8740375df3c51b2;p=stor4nfv.git diff --git a/src/ceph/src/librbd/object_map/SnapshotRemoveRequest.cc b/src/ceph/src/librbd/object_map/SnapshotRemoveRequest.cc deleted file mode 100644 index 821dd5b..0000000 --- a/src/ceph/src/librbd/object_map/SnapshotRemoveRequest.cc +++ /dev/null @@ -1,209 +0,0 @@ -// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- -// vim: ts=8 sw=2 smarttab - -#include "librbd/object_map/SnapshotRemoveRequest.h" -#include "common/dout.h" -#include "common/errno.h" -#include "librbd/ImageCtx.h" -#include "librbd/ObjectMap.h" -#include "librbd/object_map/InvalidateRequest.h" -#include "cls/lock/cls_lock_client.h" - -#define dout_subsys ceph_subsys_rbd -#undef dout_prefix -#define dout_prefix *_dout << "librbd::object_map::SnapshotRemoveRequest: " - -namespace librbd { -namespace object_map { - -namespace { - -std::ostream& operator<<(std::ostream& os, - const SnapshotRemoveRequest::State& state) { - switch(state) { - case SnapshotRemoveRequest::STATE_LOAD_MAP: - os << "LOAD_MAP"; - break; - case SnapshotRemoveRequest::STATE_REMOVE_SNAPSHOT: - os << "REMOVE_SNAPSHOT"; - break; - case SnapshotRemoveRequest::STATE_INVALIDATE_NEXT_MAP: - os << "INVALIDATE_NEXT_MAP"; - break; - case SnapshotRemoveRequest::STATE_REMOVE_MAP: - os << "REMOVE_MAP"; - break; - default: - os << "UNKNOWN (" << static_cast(state) << ")"; - break; - } - return os; -} - -} // anonymous namespace - -void SnapshotRemoveRequest::send() { - assert(m_image_ctx.owner_lock.is_locked()); - assert(m_image_ctx.snap_lock.is_wlocked()); - - if ((m_image_ctx.features & RBD_FEATURE_FAST_DIFF) != 0) { - compute_next_snap_id(); - - uint64_t flags; - int r = m_image_ctx.get_flags(m_snap_id, &flags); - assert(r == 0); - - if ((flags & RBD_FLAG_OBJECT_MAP_INVALID) != 0) { - send_invalidate_next_map(); - } else { - send_load_map(); - } - } else { - send_remove_map(); - } -} - -bool SnapshotRemoveRequest::should_complete(int r) { - CephContext *cct = m_image_ctx.cct; - ldout(cct, 5) << this << " " << __func__ << ": state=" << m_state << ", " - << "r=" << r << dendl; - - RWLock::RLocker owner_locker(m_image_ctx.owner_lock); - bool finished = false; - switch (m_state) { - case STATE_LOAD_MAP: - if (r == -ENOENT) { - finished = true; - break; - } - - if (r == 0) { - bufferlist::iterator it = m_out_bl.begin(); - r = cls_client::object_map_load_finish(&it, &m_snap_object_map); - } - if (r < 0) { - RWLock::WLocker snap_locker(m_image_ctx.snap_lock); - send_invalidate_next_map(); - } else { - send_remove_snapshot(); - } - break; - case STATE_REMOVE_SNAPSHOT: - if (r < 0 && r != -ENOENT) { - RWLock::WLocker snap_locker(m_image_ctx.snap_lock); - send_invalidate_next_map(); - } else { - update_object_map(); - send_remove_map(); - } - break; - case STATE_INVALIDATE_NEXT_MAP: - send_remove_map(); - break; - case STATE_REMOVE_MAP: - finished = true; - break; - default: - assert(false); - break; - } - return finished; -} - -void SnapshotRemoveRequest::send_load_map() { - CephContext *cct = m_image_ctx.cct; - std::string snap_oid(ObjectMap<>::object_map_name(m_image_ctx.id, m_snap_id)); - ldout(cct, 5) << this << " " << __func__ << ": snap_oid=" << snap_oid - << dendl; - m_state = STATE_LOAD_MAP; - - librados::ObjectReadOperation op; - cls_client::object_map_load_start(&op); - - librados::AioCompletion *rados_completion = create_callback_completion(); - int r = m_image_ctx.md_ctx.aio_operate(snap_oid, rados_completion, &op, - &m_out_bl); - assert(r == 0); - rados_completion->release(); -} - -void SnapshotRemoveRequest::send_remove_snapshot() { - CephContext *cct = m_image_ctx.cct; - std::string oid(ObjectMap<>::object_map_name(m_image_ctx.id, m_next_snap_id)); - ldout(cct, 5) << this << " " << __func__ << ": oid=" << oid << dendl; - m_state = STATE_REMOVE_SNAPSHOT; - - librados::ObjectWriteOperation op; - if (m_next_snap_id == CEPH_NOSNAP) { - rados::cls::lock::assert_locked(&op, RBD_LOCK_NAME, LOCK_EXCLUSIVE, "", ""); - } - cls_client::object_map_snap_remove(&op, m_snap_object_map); - - librados::AioCompletion *rados_completion = create_callback_completion(); - int r = m_image_ctx.md_ctx.aio_operate(oid, rados_completion, &op); - assert(r == 0); - rados_completion->release(); -} - -void SnapshotRemoveRequest::send_invalidate_next_map() { - assert(m_image_ctx.owner_lock.is_locked()); - assert(m_image_ctx.snap_lock.is_wlocked()); - - CephContext *cct = m_image_ctx.cct; - ldout(cct, 5) << this << " " << __func__ << dendl; - m_state = STATE_INVALIDATE_NEXT_MAP; - - InvalidateRequest<> *req = new InvalidateRequest<>(m_image_ctx, - m_next_snap_id, true, - create_callback_context()); - req->send(); -} - -void SnapshotRemoveRequest::send_remove_map() { - CephContext *cct = m_image_ctx.cct; - std::string oid(ObjectMap<>::object_map_name(m_image_ctx.id, m_snap_id)); - ldout(cct, 5) << this << " " << __func__ << ": oid=" << oid << dendl; - m_state = STATE_REMOVE_MAP; - - librados::ObjectWriteOperation op; - op.remove(); - - librados::AioCompletion *rados_completion = create_callback_completion(); - int r = m_image_ctx.md_ctx.aio_operate(oid, rados_completion, &op); - assert(r == 0); - rados_completion->release(); -} - -void SnapshotRemoveRequest::compute_next_snap_id() { - assert(m_image_ctx.snap_lock.is_locked()); - - m_next_snap_id = CEPH_NOSNAP; - std::map::const_iterator it = - m_image_ctx.snap_info.find(m_snap_id); - assert(it != m_image_ctx.snap_info.end()); - - ++it; - if (it != m_image_ctx.snap_info.end()) { - m_next_snap_id = it->first; - } -} - -void SnapshotRemoveRequest::update_object_map() { - RWLock::RLocker snap_locker(m_image_ctx.snap_lock); - RWLock::WLocker object_map_locker(m_image_ctx.object_map_lock); - if (m_next_snap_id == m_image_ctx.snap_id && m_next_snap_id == CEPH_NOSNAP) { - CephContext *cct = m_image_ctx.cct; - ldout(cct, 5) << this << " " << __func__ << dendl; - - for (uint64_t i = 0; i < m_object_map.size(); ++i) { - if (m_object_map[i] == OBJECT_EXISTS_CLEAN && - (i >= m_snap_object_map.size() || - m_snap_object_map[i] == OBJECT_EXISTS)) { - m_object_map[i] = OBJECT_EXISTS; - } - } - } -} - -} // namespace object_map -} // namespace librbd