#include "include/Context.h"
#include "common/errno.h"
#include "common/Throttle.h"
+#include "include/encoding.h"
#include <iostream>
+#include <fcntl.h>
+#include <stdlib.h>
#include <boost/program_options.hpp>
#include <boost/scope_exit.hpp>
namespace rbd {
namespace action {
+namespace export_diff {
+
+namespace at = argument_types;
+namespace po = boost::program_options;
+
+struct ExportDiffContext {
+ librbd::Image *image;
+ int fd;
+ uint64_t totalsize;
+ utils::ProgressContext pc;
+ OrderedThrottle throttle;
+
+ ExportDiffContext(librbd::Image *i, int f, uint64_t t, int max_ops,
+ bool no_progress) :
+ image(i), fd(f), totalsize(t), pc("Exporting image", no_progress),
+ throttle(max_ops, true) {
+ }
+};
+
+class C_ExportDiff : public Context {
+public:
+ C_ExportDiff(ExportDiffContext *edc, uint64_t offset, uint64_t length,
+ bool exists)
+ : m_export_diff_context(edc), m_offset(offset), m_length(length),
+ m_exists(exists) {
+ }
+
+ int send() {
+ if (m_export_diff_context->throttle.pending_error()) {
+ return m_export_diff_context->throttle.wait_for_ret();
+ }
+
+ C_OrderedThrottle *ctx = m_export_diff_context->throttle.start_op(this);
+ if (m_exists) {
+ librbd::RBD::AioCompletion *aio_completion =
+ new librbd::RBD::AioCompletion(ctx, &utils::aio_context_callback);
+
+ int op_flags = LIBRADOS_OP_FLAG_FADVISE_NOCACHE;
+ int r = m_export_diff_context->image->aio_read2(
+ m_offset, m_length, m_read_data, aio_completion, op_flags);
+ if (r < 0) {
+ aio_completion->release();
+ ctx->complete(r);
+ }
+ } else {
+ ctx->complete(0);
+ }
+ return 0;
+ }
+
+ static int export_diff_cb(uint64_t offset, size_t length, int exists,
+ void *arg) {
+ ExportDiffContext *edc = reinterpret_cast<ExportDiffContext *>(arg);
+
+ C_ExportDiff *context = new C_ExportDiff(edc, offset, length, exists);
+ return context->send();
+ }
+
+protected:
+ virtual void finish(int r) {
+ if (r >= 0) {
+ if (m_exists) {
+ m_exists = !m_read_data.is_zero();
+ }
+ r = write_extent(m_export_diff_context, m_offset, m_length, m_exists);
+ if (r == 0 && m_exists) {
+ r = m_read_data.write_fd(m_export_diff_context->fd);
+ }
+ }
+ m_export_diff_context->throttle.end_op(r);
+ }
+
+private:
+ ExportDiffContext *m_export_diff_context;
+ uint64_t m_offset;
+ uint64_t m_length;
+ bool m_exists;
+ bufferlist m_read_data;
+
+ static int write_extent(ExportDiffContext *edc, uint64_t offset,
+ uint64_t length, bool exists) {
+ // extent
+ bufferlist bl;
+ __u8 tag = exists ? RBD_DIFF_WRITE : RBD_DIFF_ZERO;
+ ::encode(tag, bl);
+ ::encode(offset, bl);
+ ::encode(length, bl);
+ int r = bl.write_fd(edc->fd);
+
+ edc->pc.update_progress(offset, edc->totalsize);
+ return r;
+ }
+};
+
+static int do_export_diff(librbd::Image& image, const char *fromsnapname,
+ const char *endsnapname, bool whole_object,
+ const char *path, bool no_progress)
+{
+ int r;
+ librbd::image_info_t info;
+ int fd;
+
+ r = image.stat(info, sizeof(info));
+ if (r < 0)
+ return r;
+
+ if (strcmp(path, "-") == 0)
+ fd = 1;
+ else
+ fd = open(path, O_WRONLY | O_CREAT | O_EXCL, 0644);
+ if (fd < 0)
+ return -errno;
+
+ BOOST_SCOPE_EXIT((&r) (&fd) (&path)) {
+ close(fd);
+ if (r < 0 && fd != 1) {
+ remove(path);
+ }
+ } BOOST_SCOPE_EXIT_END
+
+ {
+ // header
+ bufferlist bl;
+ bl.append(utils::RBD_DIFF_BANNER);
+
+ __u8 tag;
+ if (fromsnapname) {
+ tag = RBD_DIFF_FROM_SNAP;
+ ::encode(tag, bl);
+ std::string from(fromsnapname);
+ ::encode(from, bl);
+ }
+
+ if (endsnapname) {
+ tag = RBD_DIFF_TO_SNAP;
+ ::encode(tag, bl);
+ std::string to(endsnapname);
+ ::encode(to, bl);
+ }
+
+ tag = RBD_DIFF_IMAGE_SIZE;
+ ::encode(tag, bl);
+ uint64_t endsize = info.size;
+ ::encode(endsize, bl);
+
+ r = bl.write_fd(fd);
+ if (r < 0) {
+ return r;
+ }
+ }
+ ExportDiffContext edc(&image, fd, info.size,
+ g_conf->rbd_concurrent_management_ops, no_progress);
+ r = image.diff_iterate2(fromsnapname, 0, info.size, true, whole_object,
+ &C_ExportDiff::export_diff_cb, (void *)&edc);
+ if (r < 0) {
+ goto out;
+ }
+
+ r = edc.throttle.wait_for_ret();
+ if (r < 0) {
+ goto out;
+ }
+
+ {
+ __u8 tag = RBD_DIFF_END;
+ bufferlist bl;
+ ::encode(tag, bl);
+ r = bl.write_fd(fd);
+ }
+
+ out:
+ if (r < 0)
+ edc.pc.fail();
+ else
+ edc.pc.finish();
+ return r;
+}
+
+void get_arguments(po::options_description *positional,
+ po::options_description *options) {
+ at::add_image_or_snap_spec_options(positional, options,
+ at::ARGUMENT_MODIFIER_SOURCE);
+ at::add_path_options(positional, options,
+ "export file (or '-' for stdout)");
+ options->add_options()
+ (at::FROM_SNAPSHOT_NAME.c_str(), po::value<std::string>(),
+ "snapshot starting point")
+ (at::WHOLE_OBJECT.c_str(), po::bool_switch(), "compare whole object");
+ at::add_no_progress_option(options);
+}
+
+int execute(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_SOURCE, &arg_index, &pool_name, &image_name,
+ &snap_name, utils::SNAPSHOT_PRESENCE_PERMITTED,
+ utils::SPEC_VALIDATION_NONE);
+ if (r < 0) {
+ return r;
+ }
+
+ std::string path;
+ r = utils::get_path(vm, utils::get_positional_argument(vm, 1), &path);
+ if (r < 0) {
+ return r;
+ }
+
+ std::string from_snap_name;
+ if (vm.count(at::FROM_SNAPSHOT_NAME)) {
+ from_snap_name = vm[at::FROM_SNAPSHOT_NAME].as<std::string>();
+ }
+
+ librados::Rados rados;
+ librados::IoCtx io_ctx;
+ librbd::Image image;
+ r = utils::init_and_open_image(pool_name, image_name, snap_name, true,
+ &rados, &io_ctx, &image);
+ if (r < 0) {
+ return r;
+ }
+
+ r = do_export_diff(image,
+ from_snap_name.empty() ? nullptr : from_snap_name.c_str(),
+ snap_name.empty() ? nullptr : snap_name.c_str(),
+ vm[at::WHOLE_OBJECT].as<bool>(), path.c_str(),
+ vm[at::NO_PROGRESS].as<bool>());
+ if (r < 0) {
+ std::cerr << "rbd: export-diff error: " << cpp_strerror(r) << std::endl;
+ return r;
+ }
+ return 0;
+}
+
+Shell::SwitchArguments switched_arguments({at::WHOLE_OBJECT});
+Shell::Action action(
+ {"export-diff"}, {}, "Export incremental diff to file.", "",
+ &get_arguments, &execute);
+
+} // namespace export_diff
+
+
namespace export_full {
namespace at = argument_types;
+++ /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/encoding.h"
-#include "common/errno.h"
-#include "common/Throttle.h"
-#include <fcntl.h>
-#include <iostream>
-#include <stdlib.h>
-#include <boost/program_options.hpp>
-#include <boost/scope_exit.hpp>
-
-namespace rbd {
-namespace action {
-namespace export_diff {
-
-namespace at = argument_types;
-namespace po = boost::program_options;
-
-struct ExportDiffContext {
- librbd::Image *image;
- int fd;
- uint64_t totalsize;
- utils::ProgressContext pc;
- OrderedThrottle throttle;
-
- ExportDiffContext(librbd::Image *i, int f, uint64_t t, int max_ops,
- bool no_progress) :
- image(i), fd(f), totalsize(t), pc("Exporting image", no_progress),
- throttle(max_ops, true) {
- }
-};
-
-class C_ExportDiff : public Context {
-public:
- C_ExportDiff(ExportDiffContext *edc, uint64_t offset, uint64_t length,
- bool exists)
- : m_export_diff_context(edc), m_offset(offset), m_length(length),
- m_exists(exists) {
- }
-
- int send() {
- if (m_export_diff_context->throttle.pending_error()) {
- return m_export_diff_context->throttle.wait_for_ret();
- }
-
- C_OrderedThrottle *ctx = m_export_diff_context->throttle.start_op(this);
- if (m_exists) {
- librbd::RBD::AioCompletion *aio_completion =
- new librbd::RBD::AioCompletion(ctx, &utils::aio_context_callback);
-
- int op_flags = LIBRADOS_OP_FLAG_FADVISE_NOCACHE;
- int r = m_export_diff_context->image->aio_read2(
- m_offset, m_length, m_read_data, aio_completion, op_flags);
- if (r < 0) {
- aio_completion->release();
- ctx->complete(r);
- }
- } else {
- ctx->complete(0);
- }
- return 0;
- }
-
- static int export_diff_cb(uint64_t offset, size_t length, int exists,
- void *arg) {
- ExportDiffContext *edc = reinterpret_cast<ExportDiffContext *>(arg);
-
- C_ExportDiff *context = new C_ExportDiff(edc, offset, length, exists);
- return context->send();
- }
-
-protected:
- void finish(int r) override {
- if (r >= 0) {
- if (m_exists) {
- m_exists = !m_read_data.is_zero();
- }
- r = write_extent(m_export_diff_context, m_offset, m_length, m_exists);
- if (r == 0 && m_exists) {
- r = m_read_data.write_fd(m_export_diff_context->fd);
- }
- }
- m_export_diff_context->throttle.end_op(r);
- }
-
-private:
- ExportDiffContext *m_export_diff_context;
- uint64_t m_offset;
- uint64_t m_length;
- bool m_exists;
- bufferlist m_read_data;
-
- static int write_extent(ExportDiffContext *edc, uint64_t offset,
- uint64_t length, bool exists) {
- // extent
- bufferlist bl;
- __u8 tag = exists ? RBD_DIFF_WRITE : RBD_DIFF_ZERO;
- ::encode(tag, bl);
- ::encode(offset, bl);
- ::encode(length, bl);
- int r = bl.write_fd(edc->fd);
-
- edc->pc.update_progress(offset, edc->totalsize);
- return r;
- }
-};
-
-static int do_export_diff(librbd::Image& image, const char *fromsnapname,
- const char *endsnapname, bool whole_object,
- const char *path, bool no_progress)
-{
- int r;
- librbd::image_info_t info;
- int fd;
-
- r = image.stat(info, sizeof(info));
- if (r < 0)
- return r;
-
- if (strcmp(path, "-") == 0)
- fd = 1;
- else
- fd = open(path, O_WRONLY | O_CREAT | O_EXCL, 0644);
- if (fd < 0)
- return -errno;
-
- BOOST_SCOPE_EXIT((&r) (&fd) (&path)) {
- close(fd);
- if (r < 0 && fd != 1) {
- remove(path);
- }
- } BOOST_SCOPE_EXIT_END
-
- {
- // header
- bufferlist bl;
- bl.append(utils::RBD_DIFF_BANNER);
-
- __u8 tag;
- if (fromsnapname) {
- tag = RBD_DIFF_FROM_SNAP;
- ::encode(tag, bl);
- std::string from(fromsnapname);
- ::encode(from, bl);
- }
-
- if (endsnapname) {
- tag = RBD_DIFF_TO_SNAP;
- ::encode(tag, bl);
- std::string to(endsnapname);
- ::encode(to, bl);
- }
-
- tag = RBD_DIFF_IMAGE_SIZE;
- ::encode(tag, bl);
- uint64_t endsize = info.size;
- ::encode(endsize, bl);
-
- r = bl.write_fd(fd);
- if (r < 0) {
- return r;
- }
- }
- ExportDiffContext edc(&image, fd, info.size,
- g_conf->rbd_concurrent_management_ops, no_progress);
- r = image.diff_iterate2(fromsnapname, 0, info.size, true, whole_object,
- &C_ExportDiff::export_diff_cb, (void *)&edc);
- if (r < 0) {
- goto out;
- }
-
- r = edc.throttle.wait_for_ret();
- if (r < 0) {
- goto out;
- }
-
- {
- __u8 tag = RBD_DIFF_END;
- bufferlist bl;
- ::encode(tag, bl);
- r = bl.write_fd(fd);
- }
-
- out:
- if (r < 0)
- edc.pc.fail();
- else
- edc.pc.finish();
- return r;
-}
-
-void get_arguments(po::options_description *positional,
- po::options_description *options) {
- at::add_image_or_snap_spec_options(positional, options,
- at::ARGUMENT_MODIFIER_SOURCE);
- at::add_path_options(positional, options,
- "export file (or '-' for stdout)");
- options->add_options()
- (at::FROM_SNAPSHOT_NAME.c_str(), po::value<std::string>(),
- "snapshot starting point")
- (at::WHOLE_OBJECT.c_str(), po::bool_switch(), "compare whole object");
- at::add_no_progress_option(options);
-}
-
-int execute(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_SOURCE, &arg_index, &pool_name, &image_name,
- &snap_name, utils::SNAPSHOT_PRESENCE_PERMITTED,
- utils::SPEC_VALIDATION_NONE);
- if (r < 0) {
- return r;
- }
-
- std::string path;
- r = utils::get_path(vm, utils::get_positional_argument(vm, 1), &path);
- if (r < 0) {
- return r;
- }
-
- std::string from_snap_name;
- if (vm.count(at::FROM_SNAPSHOT_NAME)) {
- from_snap_name = vm[at::FROM_SNAPSHOT_NAME].as<std::string>();
- }
-
- librados::Rados rados;
- librados::IoCtx io_ctx;
- librbd::Image image;
- r = utils::init_and_open_image(pool_name, image_name, snap_name, true,
- &rados, &io_ctx, &image);
- if (r < 0) {
- return r;
- }
-
- r = do_export_diff(image,
- from_snap_name.empty() ? nullptr : from_snap_name.c_str(),
- snap_name.empty() ? nullptr : snap_name.c_str(),
- vm[at::WHOLE_OBJECT].as<bool>(), path.c_str(),
- vm[at::NO_PROGRESS].as<bool>());
- if (r < 0) {
- std::cerr << "rbd: export-diff error: " << cpp_strerror(r) << std::endl;
- return r;
- }
- return 0;
-}
-
-Shell::SwitchArguments switched_arguments({at::WHOLE_OBJECT});
-Shell::Action action(
- {"export-diff"}, {}, "Export incremental diff to file.", "",
- &get_arguments, &execute);
-
-} // namespace export_diff
-} // namespace action
-} // namespace rbd
projects / ceph.git / commitdiff