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Diffstat (limited to '')
-rw-r--r-- | src/librbd/managed_lock/ReacquireRequest.cc | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/librbd/managed_lock/ReacquireRequest.cc b/src/librbd/managed_lock/ReacquireRequest.cc new file mode 100644 index 00000000..dc5624d4 --- /dev/null +++ b/src/librbd/managed_lock/ReacquireRequest.cc @@ -0,0 +1,79 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab + +#include "librbd/managed_lock/ReacquireRequest.h" +#include "librbd/Watcher.h" +#include "cls/lock/cls_lock_client.h" +#include "cls/lock/cls_lock_types.h" +#include "common/dout.h" +#include "common/errno.h" +#include "librbd/ImageCtx.h" +#include "librbd/Utils.h" +#include "librbd/managed_lock/Utils.h" + +#define dout_subsys ceph_subsys_rbd +#undef dout_prefix +#define dout_prefix *_dout << "librbd::managed_lock::ReacquireRequest: " \ + << this << ": " << __func__ + +using std::string; + +namespace librbd { +namespace managed_lock { + +using librbd::util::create_rados_callback; + +template <typename I> +ReacquireRequest<I>::ReacquireRequest(librados::IoCtx& ioctx, + const string& oid, + const string& old_cookie, + const string &new_cookie, + bool exclusive, + Context *on_finish) + : m_ioctx(ioctx), m_oid(oid), m_old_cookie(old_cookie), + m_new_cookie(new_cookie), m_exclusive(exclusive), m_on_finish(on_finish) { +} + + +template <typename I> +void ReacquireRequest<I>::send() { + set_cookie(); +} + +template <typename I> +void ReacquireRequest<I>::set_cookie() { + CephContext *cct = reinterpret_cast<CephContext *>(m_ioctx.cct()); + ldout(cct, 10) << dendl; + + librados::ObjectWriteOperation op; + rados::cls::lock::set_cookie(&op, RBD_LOCK_NAME, + m_exclusive ? LOCK_EXCLUSIVE : LOCK_SHARED, + m_old_cookie, util::get_watcher_lock_tag(), + m_new_cookie); + + librados::AioCompletion *rados_completion = create_rados_callback< + ReacquireRequest, &ReacquireRequest::handle_set_cookie>(this); + int r = m_ioctx.aio_operate(m_oid, rados_completion, &op); + ceph_assert(r == 0); + rados_completion->release(); +} + +template <typename I> +void ReacquireRequest<I>::handle_set_cookie(int r) { + CephContext *cct = reinterpret_cast<CephContext *>(m_ioctx.cct()); + ldout(cct, 10) << ": r=" << r << dendl; + + if (r == -EOPNOTSUPP) { + ldout(cct, 10) << ": OSD doesn't support updating lock" << dendl; + } else if (r < 0) { + lderr(cct) << ": failed to update lock: " << cpp_strerror(r) << dendl; + } + + m_on_finish->complete(r); + delete this; +} + +} // namespace managed_lock +} // namespace librbd + +template class librbd::managed_lock::ReacquireRequest<librbd::ImageCtx>; |