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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "librbd/operation/SnapshotLimitRequest.h"
#include "common/dout.h"
#include "common/errno.h"
#include "librbd/ImageCtx.h"
#define dout_subsys ceph_subsys_rbd
#undef dout_prefix
#define dout_prefix *_dout << "librbd::SnapshotLimitRequest: "
namespace librbd {
namespace operation {
template <typename I>
SnapshotLimitRequest<I>::SnapshotLimitRequest(I &image_ctx,
Context *on_finish,
uint64_t limit)
: Request<I>(image_ctx, on_finish), m_snap_limit(limit) {
}
template <typename I>
void SnapshotLimitRequest<I>::send_op() {
send_limit_snaps();
}
template <typename I>
bool SnapshotLimitRequest<I>::should_complete(int r) {
I &image_ctx = this->m_image_ctx;
CephContext *cct = image_ctx.cct;
ldout(cct, 5) << this << " " << __func__ << " r=" << r << dendl;
if (r < 0) {
lderr(cct) << "encountered error: " << cpp_strerror(r) << dendl;
}
return true;
}
template <typename I>
void SnapshotLimitRequest<I>::send_limit_snaps() {
I &image_ctx = this->m_image_ctx;
ceph_assert(image_ctx.owner_lock.is_locked());
CephContext *cct = image_ctx.cct;
ldout(cct, 5) << this << " " << __func__ << dendl;
{
RWLock::RLocker md_locker(image_ctx.md_lock);
RWLock::RLocker snap_locker(image_ctx.snap_lock);
librados::ObjectWriteOperation op;
cls_client::snapshot_set_limit(&op, m_snap_limit);
librados::AioCompletion *rados_completion =
this->create_callback_completion();
int r = image_ctx.md_ctx.aio_operate(image_ctx.header_oid, rados_completion,
&op);
ceph_assert(r == 0);
rados_completion->release();
}
}
} // namespace operation
} // namespace librbd
template class librbd::operation::SnapshotLimitRequest<librbd::ImageCtx>;
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