diff options
Diffstat (limited to 'src/tools/rbd/action/Remove.cc')
| -rw-r--r-- | src/tools/rbd/action/Remove.cc | 161 |
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 |