Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 161 insertions, 0 deletions

diff --git a/src/tools/rbd/action/Remove.cc b/src/tools/rbd/action/Remove.cc
new file mode 100644
index 000000000..c5dcf2323
--- /dev/null
+++ b/src/tools/rbd/action/Remove.cc
@@ -0,0 +1,161 @@
+// -*- 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 "common/errno.h"
+#include "include/stringify.h"
+#include <iostream>
+#include <boost/program_options.hpp>
+
+namespace rbd {
+namespace action {
+namespace remove {
+
+namespace {
+
+bool is_auto_delete_snapshot(librbd::Image* image,
+                             const librbd::snap_info_t &snap_info) {
+  librbd::snap_namespace_type_t namespace_type;
+  int r = image->snap_get_namespace_type(snap_info.id, &namespace_type);
+  if (r < 0) {
+    return false;
+  }
+
+  switch (namespace_type) {
+  case RBD_SNAP_NAMESPACE_TYPE_TRASH:
+    return true;
+  default:
+    return false;
+  }
+}
+
+} // anonymous namespace
+
+namespace at = argument_types;
+namespace po = boost::program_options;
+
+static int do_delete(librbd::RBD &rbd, librados::IoCtx& io_ctx,
+                     const char *imgname, bool no_progress)
+{
+  utils::ProgressContext pc("Removing image", no_progress);
+  int r = rbd.remove_with_progress(io_ctx, imgname, pc);
+  if (r < 0) {
+    pc.fail();
+    return r;
+  }
+  pc.finish();
+  return 0;
+}
+
+void get_arguments(po::options_description *positional,
+                   po::options_description *options) {
+  at::add_image_spec_options(positional, options, at::ARGUMENT_MODIFIER_NONE);
+  at::add_no_progress_option(options);
+}
+
+int execute(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;
+  r = utils::init(pool_name, namespace_name, &rados, &io_ctx);
+  if (r < 0) {
+    return r;
+  }
+
+  io_ctx.set_pool_full_try();
+
+  librbd::RBD rbd;
+  r = do_delete(rbd, io_ctx, image_name.c_str(),
+                vm[at::NO_PROGRESS].as<bool>());
+  if (r < 0) {
+    if (r == -ENOTEMPTY) {
+      librbd::Image image;
+      std::vector<librbd::snap_info_t> snaps;
+      int image_r = utils::open_image(io_ctx, image_name, true, &image);
+      if (image_r >= 0) {
+        image_r = image.snap_list(snaps);
+      }
+      if (image_r >= 0) {
+        snaps.erase(std::remove_if(snaps.begin(), snaps.end(),
+			           [&image](const librbd::snap_info_t& snap) {
+                                     return is_auto_delete_snapshot(&image,
+                                                                    snap);
+                                   }),
+                    snaps.end());
+      }
+
+      if (!snaps.empty()) {
+        std::cerr << "rbd: image has snapshots - these must be deleted"
+                  << " with 'rbd snap purge' before the image can be removed."
+                  << std::endl;
+      } else {
+        std::cerr << "rbd: image has snapshots with linked clones - these must "
+                  << "be deleted or flattened before the image can be removed."
+                  << std::endl;
+      }
+    } else if (r == -EBUSY) {
+      std::cerr << "rbd: error: image still has watchers"
+                << std::endl
+                << "This means the image is still open or the client using "
+                << "it crashed. Try again after closing/unmapping it or "
+                << "waiting 30s for the crashed client to timeout."
+                << std::endl;
+    } else if (r == -EMLINK) {
+      librbd::Image image;
+      int image_r = utils::open_image(io_ctx, image_name, true, &image);
+      librbd::group_info_t group_info;
+      if (image_r == 0) {
+	image_r = image.get_group(&group_info, sizeof(group_info));
+      }
+      if (image_r == 0) {
+        std::string pool_name = "";
+        librados::Rados rados(io_ctx);
+        librados::IoCtx pool_io_ctx;
+        image_r = rados.ioctx_create2(group_info.pool, pool_io_ctx);
+        if (image_r < 0) {
+          pool_name = "<missing group pool " + stringify(group_info.pool) + ">";
+        } else {
+          pool_name = pool_io_ctx.get_pool_name();
+        }
+        std::cerr << "rbd: error: image belongs to a group "
+                  << pool_name << "/";
+        if (!io_ctx.get_namespace().empty()) {
+          std::cerr << io_ctx.get_namespace() << "/";
+        }
+        std::cerr << group_info.name;
+      } else
+	std::cerr << "rbd: error: image belongs to a group";
+
+      std::cerr << std::endl
+		<< "Remove the image from the group and try again."
+		<< std::endl;
+      image.close();
+    } else {
+      std::cerr << "rbd: delete error: " << cpp_strerror(r) << std::endl;
+    }
+    return r;
+  }
+  return 0;
+}
+
+Shell::Action action(
+  {"remove"}, {"rm"}, "Delete an image.", "", &get_arguments, &execute);
+
+} // namespace remove
+} // namespace action
+} // namespace rbd