summaryrefslogtreecommitdiffstats
path: root/src/tools/rbd/action/PersistentCache.cc
diff options
context:
space:
mode:
Diffstat (limited to 'src/tools/rbd/action/PersistentCache.cc')
-rw-r--r--src/tools/rbd/action/PersistentCache.cc122
1 files changed, 122 insertions, 0 deletions
diff --git a/src/tools/rbd/action/PersistentCache.cc b/src/tools/rbd/action/PersistentCache.cc
new file mode 100644
index 000000000..949006b82
--- /dev/null
+++ b/src/tools/rbd/action/PersistentCache.cc
@@ -0,0 +1,122 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "tools/rbd/ArgumentTypes.h"
+#include "tools/rbd/Shell.h"
+#include "tools/rbd/Utils.h"
+#include "include/types.h"
+#include "include/rbd_types.h"
+#include "include/stringify.h"
+#include "common/errno.h"
+#include "common/Formatter.h"
+#include <iostream>
+#include <boost/program_options.hpp>
+
+namespace rbd {
+namespace action {
+namespace persistent_cache {
+
+namespace at = argument_types;
+namespace po = boost::program_options;
+
+void get_arguments_invalidate(po::options_description *positional,
+ po::options_description *options) {
+ at::add_image_spec_options(positional, options, at::ARGUMENT_MODIFIER_NONE);
+ at::add_image_id_option(options);
+}
+
+int execute_invalidate(const po::variables_map &vm,
+ const std::vector<std::string> &ceph_global_init_args) {
+ size_t arg_index = 0;
+ std::string pool_name;
+ std::string namespace_name;
+ std::string image_name;
+ std::string snap_name;
+ int r = utils::get_pool_image_snapshot_names(
+ vm, at::ARGUMENT_MODIFIER_NONE, &arg_index, &pool_name, &namespace_name,
+ &image_name, &snap_name, true, utils::SNAPSHOT_PRESENCE_NONE,
+ utils::SPEC_VALIDATION_NONE);
+ if (r < 0) {
+ return r;
+ }
+
+ librados::Rados rados;
+ librados::IoCtx io_ctx;
+ librbd::Image image;
+ r = utils::init_and_open_image(pool_name, namespace_name, image_name, "", "",
+ false, &rados, &io_ctx, &image);
+ if (r < 0) {
+ return r;
+ }
+
+ r = image.invalidate_cache();
+ if (r < 0) {
+ std::cerr << "rbd: invalidating persistent cache failed: "
+ << cpp_strerror(r) << std::endl;
+ return r;
+ }
+
+ return 0;
+}
+
+void get_arguments_flush(po::options_description *positional,
+ po::options_description *options) {
+ at::add_image_spec_options(positional, options, at::ARGUMENT_MODIFIER_NONE);
+ at::add_image_id_option(options);
+}
+
+int execute_flush(const po::variables_map &vm,
+ const std::vector<std::string> &ceph_global_init_args) {
+ size_t arg_index = 0;
+ std::string pool_name;
+ std::string namespace_name;
+ std::string image_name;
+ std::string snap_name;
+ int r = utils::get_pool_image_snapshot_names(
+ vm, at::ARGUMENT_MODIFIER_NONE, &arg_index, &pool_name, &namespace_name,
+ &image_name, &snap_name, true, utils::SNAPSHOT_PRESENCE_NONE,
+ utils::SPEC_VALIDATION_NONE);
+ if (r < 0) {
+ return r;
+ }
+
+ librados::Rados rados;
+ librados::IoCtx io_ctx;
+ librbd::Image image;
+ r = utils::init_and_open_image(pool_name, namespace_name, image_name, "", "",
+ false, &rados, &io_ctx, &image);
+ if (r < 0) {
+ return r;
+ }
+
+ uint64_t features;
+ r = image.features(&features);
+ if (r < 0) {
+ return r;
+ }
+
+ if (features & RBD_FEATURE_DIRTY_CACHE) {
+ r = image.flush();
+ if (r < 0) {
+ std::cerr << "rbd: flushing persistent cache failed: "
+ << cpp_strerror(r) << std::endl;
+ return r;
+ }
+ } else {
+ std::cout << "rbd: persistent cache is clean or disabled" << std::endl;
+ }
+
+ return 0;
+}
+
+Shell::Action action_invalidate(
+ {"persistent-cache", "invalidate"}, {},
+ "Invalidate (discard) existing / dirty persistent cache.", "",
+ &get_arguments_invalidate, &execute_invalidate);
+Shell::Action action_flush(
+ {"persistent-cache", "flush"}, {}, "Flush persistent cache.", "",
+ &get_arguments_flush, &execute_flush);
+
+} // namespace persistent_cache
+} // namespace action
+} // namespace rbd