X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Ftools%2Frbd%2Faction%2FTrash.cc;fp=src%2Fceph%2Fsrc%2Ftools%2Frbd%2Faction%2FTrash.cc;h=136ebfacda21eecc0234ff8a01a14196020da002;hb=812ff6ca9fcd3e629e49d4328905f33eee8ca3f5;hp=0000000000000000000000000000000000000000;hpb=15280273faafb77777eab341909a3f495cf248d9;p=stor4nfv.git

diff --git a/src/ceph/src/tools/rbd/action/Trash.cc b/src/ceph/src/tools/rbd/action/Trash.cc
new file mode 100644
index 0000000..136ebfa
--- /dev/null
+++ b/src/ceph/src/tools/rbd/action/Trash.cc
@@ -0,0 +1,372 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2017 SUSE LINUX GmbH
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#include "tools/rbd/ArgumentTypes.h"
+#include "tools/rbd/Shell.h"
+#include "tools/rbd/Utils.h"
+#include "common/errno.h"
+#include "include/stringify.h"
+#include "common/Formatter.h"
+#include "common/TextTable.h"
+#include "common/Clock.h"
+#include <iostream>
+#include <sstream>
+#include <boost/program_options.hpp>
+
+namespace rbd {
+namespace action {
+namespace trash {
+
+namespace at = argument_types;
+namespace po = boost::program_options;
+
+
+void get_move_arguments(po::options_description *positional,
+                        po::options_description *options) {
+  at::add_image_spec_options(positional, options, at::ARGUMENT_MODIFIER_NONE);
+  options->add_options()
+    (at::DELAY.c_str(), po::value<uint64_t>(),
+     "time delay in seconds until effectively remove the image");
+}
+
+int execute_move(const po::variables_map &vm) {
+  size_t arg_index = 0;
+  std::string pool_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, &image_name,
+    &snap_name, 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, &rados, &io_ctx);
+  if (r < 0) {
+    return r;
+  }
+
+  uint64_t delay = 0;
+  if (vm.find(at::DELAY) != vm.end()) {
+    delay = vm[at::DELAY].as<uint64_t>();
+  }
+
+  librbd::RBD rbd;
+  r = rbd.trash_move(io_ctx, image_name.c_str(), delay);
+  if (r < 0) {
+    std::cerr << "rbd: deferred delete error: " << cpp_strerror(r)
+              << std::endl;
+  }
+
+  return r;
+
+}
+
+void get_remove_arguments(po::options_description *positional,
+                          po::options_description *options) {
+  positional->add_options()
+    (at::IMAGE_ID.c_str(), "image id\n(example: [<pool-name>/]<image-id>)");
+  at::add_pool_option(options, at::ARGUMENT_MODIFIER_NONE);
+  at::add_image_id_option(options);
+
+  at::add_no_progress_option(options);
+  options->add_options()
+      ("force", po::bool_switch(), "force remove of non-expired delayed images");
+}
+
+int execute_remove(const po::variables_map &vm) {
+  size_t arg_index = 0;
+  std::string pool_name;
+  std::string image_id;
+  int r = utils::get_pool_image_id(vm, &arg_index, &pool_name, &image_id);
+  if (r < 0) {
+    return r;
+  }
+
+  librados::Rados rados;
+  librados::IoCtx io_ctx;
+  r = utils::init(pool_name, &rados, &io_ctx);
+  if (r < 0) {
+    return r;
+  }
+
+  librbd::RBD rbd;
+
+  utils::ProgressContext pc("Removing image", vm[at::NO_PROGRESS].as<bool>());
+  r = rbd.trash_remove_with_progress(io_ctx, image_id.c_str(),
+                                     vm["force"].as<bool>(), pc);
+  if (r < 0) {
+    if (r == -ENOTEMPTY) {
+      std::cerr << "rbd: image has snapshots - these must be deleted"
+                << " with 'rbd snap purge' 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) {
+      std::cerr << std::endl
+		<< "Remove the image from the consistency group and try again."
+		<< std::endl;
+    } else if (r == -EPERM) {
+      std::cerr << std::endl
+                << "Deferment time has not expired, please use --force if you "
+                << "really want to remove the image"
+                << std::endl;
+    } else {
+      std::cerr << "rbd: remove error: " << cpp_strerror(r) << std::endl;
+    }
+    pc.fail();
+    return r;
+  }
+
+  pc.finish();
+
+  return r;
+}
+
+std::string delete_status(time_t deferment_end_time) {
+  time_t now = ceph_clock_gettime();
+
+  std::string time_str = ctime(&deferment_end_time);
+  time_str = time_str.substr(0, time_str.length() - 1);
+
+  std::stringstream ss;
+  if (now < deferment_end_time) {
+    ss << "protected until " << time_str;
+  }
+
+  return ss.str();
+}
+
+int do_list(librbd::RBD &rbd, librados::IoCtx& io_ctx, bool long_flag,
+            bool all_flag, Formatter *f) {
+  std::vector<librbd::trash_image_info_t> trash_entries;
+  int r = rbd.trash_list(io_ctx, trash_entries);
+  if (r < 0) {
+    return r;
+  }
+
+  if (!long_flag) {
+    if (f) {
+      f->open_array_section("trash");
+    }
+    for (const auto& entry : trash_entries) {
+      if (!all_flag &&
+          entry.source == RBD_TRASH_IMAGE_SOURCE_MIRRORING) {
+        continue;
+      }
+       if (f) {
+         f->dump_string("id", entry.id);
+         f->dump_string("name", entry.name);
+       } else {
+         std::cout << entry.id << " " << entry.name << std::endl;
+       }
+    }
+    if (f) {
+      f->close_section();
+      f->flush(std::cout);
+    }
+    return 0;
+  }
+
+  TextTable tbl;
+
+  if (f) {
+    f->open_array_section("trash");
+  } else {
+    tbl.define_column("ID", TextTable::LEFT, TextTable::LEFT);
+    tbl.define_column("NAME", TextTable::LEFT, TextTable::LEFT);
+    tbl.define_column("SOURCE", TextTable::LEFT, TextTable::LEFT);
+    tbl.define_column("DELETED_AT", TextTable::LEFT, TextTable::LEFT);
+    tbl.define_column("STATUS", TextTable::LEFT, TextTable::LEFT);
+  }
+
+  for (const auto& entry : trash_entries) {
+    if (!all_flag &&
+        entry.source == RBD_TRASH_IMAGE_SOURCE_MIRRORING) {
+      continue;
+    }
+    librbd::Image im;
+
+    r = rbd.open_by_id_read_only(io_ctx, im, entry.id.c_str(), NULL);
+    // image might disappear between rbd.list() and rbd.open(); ignore
+    // that, warn about other possible errors (EPERM, say, for opening
+    // an old-format image, because you need execute permission for the
+    // class method)
+    if (r < 0) {
+      if (r != -ENOENT) {
+        std::cerr << "rbd: error opening " << entry.id << ": "
+                  << cpp_strerror(r) << std::endl;
+      }
+      // in any event, continue to next image
+      continue;
+    }
+
+    std::string del_source;
+    switch (entry.source) {
+      case RBD_TRASH_IMAGE_SOURCE_USER:
+        del_source = "USER";
+        break;
+      case RBD_TRASH_IMAGE_SOURCE_MIRRORING:
+        del_source = "MIRRORING";
+        break;
+    }
+
+    std::string time_str = ctime(&entry.deletion_time);
+    time_str = time_str.substr(0, time_str.length() - 1);
+
+    if (f) {
+      f->open_object_section("image");
+      f->dump_string("id", entry.id);
+      f->dump_string("name", entry.name);
+      f->dump_string("source", del_source);
+      f->dump_string("deleted_at", time_str);
+      f->dump_string("status",
+                     delete_status(entry.deferment_end_time));
+      f->close_section();
+    } else {
+      tbl << entry.id
+          << entry.name
+          << del_source
+          << time_str
+          << delete_status(entry.deferment_end_time)
+          << TextTable::endrow;
+    }
+  }
+
+  if (f) {
+    f->close_section();
+    f->flush(std::cout);
+  } else if (!trash_entries.empty()) {
+    std::cout << tbl;
+  }
+
+  return r < 0 ? r : 0;
+}
+
+void get_list_arguments(po::options_description *positional,
+                        po::options_description *options) {
+  at::add_pool_options(positional, options);
+  options->add_options()
+    ("all,a", po::bool_switch(), "list images from all sources");
+  options->add_options()
+    ("long,l", po::bool_switch(), "long listing format");
+  at::add_format_options(options);
+}
+
+int execute_list(const po::variables_map &vm) {
+  size_t arg_index = 0;
+  std::string pool_name = utils::get_pool_name(vm, &arg_index);
+
+  at::Format::Formatter formatter;
+  int r = utils::get_formatter(vm, &formatter);
+  if (r < 0) {
+    return r;
+  }
+
+  librados::Rados rados;
+  librados::IoCtx io_ctx;
+  r = utils::init(pool_name, &rados, &io_ctx);
+  if (r < 0) {
+    return r;
+  }
+
+  librbd::RBD rbd;
+  r = do_list(rbd, io_ctx, vm["long"].as<bool>(), vm["all"].as<bool>(),
+              formatter.get());
+  if (r < 0) {
+    std::cerr << "rbd: trash list: " << cpp_strerror(r) << std::endl;
+    return r;
+  }
+
+  return 0;
+}
+
+void get_restore_arguments(po::options_description *positional,
+                            po::options_description *options) {
+  positional->add_options()
+    (at::IMAGE_ID.c_str(), "image id\n(example: [<pool-name>/]<image-id>)");
+  at::add_pool_option(options, at::ARGUMENT_MODIFIER_NONE);
+  at::add_image_id_option(options);
+  at::add_image_option(options, at::ARGUMENT_MODIFIER_NONE, "");
+}
+
+int execute_restore(const po::variables_map &vm) {
+  size_t arg_index = 0;
+  std::string pool_name;
+  std::string image_id;
+  int r = utils::get_pool_image_id(vm, &arg_index, &pool_name, &image_id);
+  if (r < 0) {
+    return r;
+  }
+
+  librados::Rados rados;
+  librados::IoCtx io_ctx;
+  r = utils::init(pool_name, &rados, &io_ctx);
+  if (r < 0) {
+    return r;
+  }
+
+  std::string name;
+  if (vm.find(at::IMAGE_NAME) != vm.end()) {
+    name = vm[at::IMAGE_NAME].as<std::string>();
+  }
+
+  librbd::RBD rbd;
+  r = rbd.trash_restore(io_ctx, image_id.c_str(), name.c_str());
+  if (r < 0) {
+    if (r == -ENOENT) {
+      std::cerr << "rbd: error: image does not exist in trash"
+                << std::endl;
+    } else if (r == -EEXIST) {
+      std::cerr << "rbd: error: an image with the same name already exists, "
+                << "try again with with a different name"
+                << std::endl;
+    } else {
+      std::cerr << "rbd: restore error: " << cpp_strerror(r) << std::endl;
+    }
+    return r;
+  }
+
+  return r;
+}
+
+
+Shell::Action action_move(
+    {"trash", "move"}, {"trash", "mv"}, "Move an image to the trash.", "",
+    &get_move_arguments, &execute_move);
+
+Shell::Action action_remove(
+  {"trash", "remove"}, {"trash", "rm"}, "Remove an image from trash.", "",
+  &get_remove_arguments, &execute_remove);
+
+Shell::SwitchArguments switched_arguments({"long", "l"});
+Shell::Action action_list(
+  {"trash", "list"}, {"trash", "ls"}, "List trash images.", "",
+  &get_list_arguments, &execute_list);
+
+Shell::Action action_restore(
+    {"trash", "restore"}, {}, "Restore an image from trash.", "",
+    &get_restore_arguments, &execute_restore);
+
+} // namespace trash
+} // namespace action
+} // namespace rbd