--- /dev/null
+// -*- 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/Context.h"
+#include "include/stringify.h"
+#include "include/types.h"
+#include "common/errno.h"
+#include "common/Formatter.h"
+#include "common/TextTable.h"
+#include <iostream>
+#include <boost/program_options.hpp>
+#include "global/global_context.h"
+
+namespace rbd {
+
+namespace action {
+namespace list {
+
+namespace at = argument_types;
+namespace po = boost::program_options;
+
+enum WorkerState {
+ STATE_IDLE = 0,
+ STATE_OPENED,
+ STATE_DONE
+} ;
+
+struct WorkerEntry {
+ librbd::Image img;
+ librbd::RBD::AioCompletion* completion;
+ WorkerState state;
+ string name;
+
+ WorkerEntry() {
+ state = STATE_IDLE;
+ completion = nullptr;
+ }
+};
+
+
+int list_process_image(librados::Rados* rados, WorkerEntry* w, bool lflag, Formatter *f, TextTable &tbl)
+{
+ int r = 0;
+ librbd::image_info_t info;
+ std::string pool, image, snap, parent;
+
+ // handle second-nth trips through loop
+ r = w->img.parent_info(&pool, &image, &snap);
+ if (r < 0 && r != -ENOENT)
+ return r;
+ bool has_parent = false;
+ if (r != -ENOENT) {
+ parent = pool + "/" + image + "@" + snap;
+ has_parent = true;
+ }
+
+ if (w->img.stat(info, sizeof(info)) < 0) {
+ return -EINVAL;
+ }
+
+ uint8_t old_format;
+ w->img.old_format(&old_format);
+
+ std::list<librbd::locker_t> lockers;
+ bool exclusive;
+ r = w->img.list_lockers(&lockers, &exclusive, NULL);
+ if (r < 0)
+ return r;
+ std::string lockstr;
+ if (!lockers.empty()) {
+ lockstr = (exclusive) ? "excl" : "shr";
+ }
+
+ if (f) {
+ f->open_object_section("image");
+ f->dump_string("image", w->name);
+ f->dump_unsigned("size", info.size);
+ if (has_parent) {
+ f->open_object_section("parent");
+ f->dump_string("pool", pool);
+ f->dump_string("image", image);
+ f->dump_string("snapshot", snap);
+ f->close_section();
+ }
+ f->dump_int("format", old_format ? 1 : 2);
+ if (!lockers.empty())
+ f->dump_string("lock_type", exclusive ? "exclusive" : "shared");
+ f->close_section();
+ } else {
+ tbl << w->name
+ << stringify(si_t(info.size))
+ << parent
+ << ((old_format) ? '1' : '2')
+ << "" // protect doesn't apply to images
+ << lockstr
+ << TextTable::endrow;
+ }
+
+ std::vector<librbd::snap_info_t> snaplist;
+ if (w->img.snap_list(snaplist) >= 0 && !snaplist.empty()) {
+ for (std::vector<librbd::snap_info_t>::iterator s = snaplist.begin();
+ s != snaplist.end(); ++s) {
+ bool is_protected;
+ bool has_parent = false;
+ parent.clear();
+ w->img.snap_set(s->name.c_str());
+ r = w->img.snap_is_protected(s->name.c_str(), &is_protected);
+ if (r < 0)
+ return r;
+ if (w->img.parent_info(&pool, &image, &snap) >= 0) {
+ parent = pool + "/" + image + "@" + snap;
+ has_parent = true;
+ }
+ if (f) {
+ f->open_object_section("snapshot");
+ f->dump_string("image", w->name);
+ f->dump_string("snapshot", s->name);
+ f->dump_unsigned("size", s->size);
+ if (has_parent) {
+ f->open_object_section("parent");
+ f->dump_string("pool", pool);
+ f->dump_string("image", image);
+ f->dump_string("snapshot", snap);
+ f->close_section();
+ }
+ f->dump_int("format", old_format ? 1 : 2);
+ f->dump_string("protected", is_protected ? "true" : "false");
+ f->close_section();
+ } else {
+ tbl << w->name + "@" + s->name
+ << stringify(si_t(s->size))
+ << parent
+ << ((old_format) ? '1' : '2')
+ << (is_protected ? "yes" : "")
+ << "" // locks don't apply to snaps
+ << TextTable::endrow;
+ }
+ }
+ }
+
+ return r < 0 ? r : 0;
+}
+
+int do_list(std::string &pool_name, bool lflag, int threads, Formatter *f) {
+ std::vector<WorkerEntry*> workers;
+ std::vector<std::string> names;
+ librados::Rados rados;
+ librbd::RBD rbd;
+ librados::IoCtx ioctx;
+
+ if (threads < 1) {
+ threads = 1;
+ }
+ if (threads > 32) {
+ threads = 32;
+ }
+
+ int r = utils::init(pool_name, &rados, &ioctx);
+ if (r < 0) {
+ return r;
+ }
+
+ r = rbd.list(ioctx, names);
+ if (r < 0)
+ return r;
+
+ if (!lflag) {
+ if (f)
+ f->open_array_section("images");
+ for (std::vector<std::string>::const_iterator i = names.begin();
+ i != names.end(); ++i) {
+ if (f)
+ f->dump_string("name", *i);
+ else
+ std::cout << *i << std::endl;
+ }
+ if (f) {
+ f->close_section();
+ f->flush(std::cout);
+ }
+ return 0;
+ }
+
+ TextTable tbl;
+
+ if (f) {
+ f->open_array_section("images");
+ } else {
+ tbl.define_column("NAME", TextTable::LEFT, TextTable::LEFT);
+ tbl.define_column("SIZE", TextTable::RIGHT, TextTable::RIGHT);
+ tbl.define_column("PARENT", TextTable::LEFT, TextTable::LEFT);
+ tbl.define_column("FMT", TextTable::RIGHT, TextTable::RIGHT);
+ tbl.define_column("PROT", TextTable::LEFT, TextTable::LEFT);
+ tbl.define_column("LOCK", TextTable::LEFT, TextTable::LEFT);
+ }
+
+ for (int left = 0; left < std::min(threads, (int)names.size()); left++) {
+ workers.push_back(new WorkerEntry());
+ }
+
+ auto i = names.begin();
+ while (true) {
+ size_t workers_idle = 0;
+ for (auto comp : workers) {
+ switch (comp->state) {
+ case STATE_DONE:
+ comp->completion->wait_for_complete();
+ comp->state = STATE_IDLE;
+ comp->completion->release();
+ comp->completion = nullptr;
+ // we want it to fall through in this case
+ case STATE_IDLE:
+ if (i == names.end()) {
+ workers_idle++;
+ continue;
+ }
+ comp->name = *i;
+ comp->completion = new librbd::RBD::AioCompletion(nullptr, nullptr);
+ r = rbd.aio_open_read_only(ioctx, comp->img, i->c_str(), NULL, comp->completion);
+ i++;
+ comp->state = STATE_OPENED;
+ break;
+ case STATE_OPENED:
+ comp->completion->wait_for_complete();
+ // 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)
+ r = comp->completion->get_return_value();
+ comp->completion->release();
+ if (r < 0) {
+ if (r != -ENOENT) {
+ std::cerr << "rbd: error opening " << *i << ": " << cpp_strerror(r)
+ << std::endl;
+ }
+ // in any event, continue to next image
+ comp->state = STATE_IDLE;
+ continue;
+ }
+ r = list_process_image(&rados, comp, lflag, f, tbl);
+ if (r < 0) {
+ std::cerr << "rbd: error processing image " << comp->name << ": " << cpp_strerror(r)
+ << std::endl;
+ }
+ comp->completion = new librbd::RBD::AioCompletion(nullptr, nullptr);
+ r = comp->img.aio_close(comp->completion);
+ comp->state = STATE_DONE;
+ break;
+ }
+ }
+ if (workers_idle == workers.size()) {
+ break;
+ }
+ }
+
+ if (f) {
+ f->close_section();
+ f->flush(std::cout);
+ } else if (!names.empty()) {
+ std::cout << tbl;
+ }
+
+ rados.shutdown();
+
+ for (auto comp : workers) {
+ delete comp;
+ }
+
+ return r < 0 ? r : 0;
+}
+
+void get_arguments(po::options_description *positional,
+ po::options_description *options) {
+ options->add_options()
+ ("long,l", po::bool_switch(), "long listing format");
+ at::add_pool_options(positional, options);
+ at::add_format_options(options);
+}
+
+int execute(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;
+ }
+
+ r = do_list(pool_name, vm["long"].as<bool>(),
+ g_conf->get_val<int64_t>("rbd_concurrent_management_ops"),
+ formatter.get());
+ if (r < 0) {
+ std::cerr << "rbd: list: " << cpp_strerror(r) << std::endl;
+ return r;
+ }
+
+ return 0;
+}
+
+Shell::SwitchArguments switched_arguments({"long", "l"});
+Shell::Action action(
+ {"list"}, {"ls"}, "List rbd images.", "", &get_arguments, &execute);
+
+} // namespace list
+} // namespace action
+} // namespace rbd
Code Review / stor4nfv.git / blobdiff