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7c673cae FG |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
4 | #include "tools/rbd/ArgumentTypes.h" | |
5 | #include "tools/rbd/Shell.h" | |
6 | #include "tools/rbd/Utils.h" | |
7 | #include "common/errno.h" | |
11fdf7f2 | 8 | #include "include/stringify.h" |
7c673cae FG |
9 | #include <iostream> |
10 | #include <boost/program_options.hpp> | |
11 | ||
12 | namespace rbd { | |
13 | namespace action { | |
14 | namespace remove { | |
15 | ||
11fdf7f2 TL |
16 | namespace { |
17 | ||
18 | bool is_auto_delete_snapshot(librbd::Image* image, | |
19 | const librbd::snap_info_t &snap_info) { | |
20 | librbd::snap_namespace_type_t namespace_type; | |
21 | int r = image->snap_get_namespace_type(snap_info.id, &namespace_type); | |
22 | if (r < 0) { | |
23 | return false; | |
24 | } | |
25 | ||
26 | switch (namespace_type) { | |
27 | case RBD_SNAP_NAMESPACE_TYPE_TRASH: | |
28 | return true; | |
29 | default: | |
30 | return false; | |
31 | } | |
32 | } | |
33 | ||
34 | } // anonymous namespace | |
35 | ||
7c673cae FG |
36 | namespace at = argument_types; |
37 | namespace po = boost::program_options; | |
38 | ||
39 | static int do_delete(librbd::RBD &rbd, librados::IoCtx& io_ctx, | |
40 | const char *imgname, bool no_progress) | |
41 | { | |
42 | utils::ProgressContext pc("Removing image", no_progress); | |
43 | int r = rbd.remove_with_progress(io_ctx, imgname, pc); | |
44 | if (r < 0) { | |
45 | pc.fail(); | |
46 | return r; | |
47 | } | |
48 | pc.finish(); | |
49 | return 0; | |
50 | } | |
51 | ||
52 | void get_arguments(po::options_description *positional, | |
53 | po::options_description *options) { | |
54 | at::add_image_spec_options(positional, options, at::ARGUMENT_MODIFIER_NONE); | |
55 | at::add_no_progress_option(options); | |
56 | } | |
57 | ||
11fdf7f2 TL |
58 | int execute(const po::variables_map &vm, |
59 | const std::vector<std::string> &ceph_global_init_args) { | |
7c673cae FG |
60 | size_t arg_index = 0; |
61 | std::string pool_name; | |
11fdf7f2 | 62 | std::string namespace_name; |
7c673cae FG |
63 | std::string image_name; |
64 | std::string snap_name; | |
65 | int r = utils::get_pool_image_snapshot_names( | |
11fdf7f2 TL |
66 | vm, at::ARGUMENT_MODIFIER_NONE, &arg_index, &pool_name, &namespace_name, |
67 | &image_name, &snap_name, true, utils::SNAPSHOT_PRESENCE_NONE, | |
68 | utils::SPEC_VALIDATION_NONE); | |
7c673cae FG |
69 | if (r < 0) { |
70 | return r; | |
71 | } | |
72 | ||
73 | librados::Rados rados; | |
74 | librados::IoCtx io_ctx; | |
11fdf7f2 | 75 | r = utils::init(pool_name, namespace_name, &rados, &io_ctx); |
7c673cae FG |
76 | if (r < 0) { |
77 | return r; | |
78 | } | |
79 | ||
9f95a23c | 80 | io_ctx.set_pool_full_try(); |
7c673cae FG |
81 | |
82 | librbd::RBD rbd; | |
83 | r = do_delete(rbd, io_ctx, image_name.c_str(), | |
84 | vm[at::NO_PROGRESS].as<bool>()); | |
85 | if (r < 0) { | |
86 | if (r == -ENOTEMPTY) { | |
11fdf7f2 TL |
87 | librbd::Image image; |
88 | std::vector<librbd::snap_info_t> snaps; | |
89 | int image_r = utils::open_image(io_ctx, image_name, true, &image); | |
90 | if (image_r >= 0) { | |
91 | image_r = image.snap_list(snaps); | |
92 | } | |
93 | if (image_r >= 0) { | |
94 | snaps.erase(std::remove_if(snaps.begin(), snaps.end(), | |
95 | [&image](const librbd::snap_info_t& snap) { | |
96 | return is_auto_delete_snapshot(&image, | |
97 | snap); | |
98 | }), | |
99 | snaps.end()); | |
100 | } | |
101 | ||
102 | if (!snaps.empty()) { | |
103 | std::cerr << "rbd: image has snapshots - these must be deleted" | |
104 | << " with 'rbd snap purge' before the image can be removed." | |
105 | << std::endl; | |
106 | } else { | |
107 | std::cerr << "rbd: image has snapshots with linked clones - these must " | |
108 | << "be deleted or flattened before the image can be removed." | |
109 | << std::endl; | |
110 | } | |
7c673cae FG |
111 | } else if (r == -EBUSY) { |
112 | std::cerr << "rbd: error: image still has watchers" | |
113 | << std::endl | |
114 | << "This means the image is still open or the client using " | |
115 | << "it crashed. Try again after closing/unmapping it or " | |
116 | << "waiting 30s for the crashed client to timeout." | |
117 | << std::endl; | |
11fdf7f2 TL |
118 | } else if (r == -EMLINK) { |
119 | librbd::Image image; | |
120 | int image_r = utils::open_image(io_ctx, image_name, true, &image); | |
121 | librbd::group_info_t group_info; | |
122 | if (image_r == 0) { | |
123 | image_r = image.get_group(&group_info, sizeof(group_info)); | |
124 | } | |
125 | if (image_r == 0) { | |
126 | std::string pool_name = ""; | |
127 | librados::Rados rados(io_ctx); | |
128 | librados::IoCtx pool_io_ctx; | |
129 | image_r = rados.ioctx_create2(group_info.pool, pool_io_ctx); | |
130 | if (image_r < 0) { | |
131 | pool_name = "<missing group pool " + stringify(group_info.pool) + ">"; | |
132 | } else { | |
133 | pool_name = pool_io_ctx.get_pool_name(); | |
134 | } | |
135 | std::cerr << "rbd: error: image belongs to a group " | |
136 | << pool_name << "/"; | |
137 | if (!io_ctx.get_namespace().empty()) { | |
138 | std::cerr << io_ctx.get_namespace() << "/"; | |
139 | } | |
140 | std::cerr << group_info.name; | |
141 | } else | |
142 | std::cerr << "rbd: error: image belongs to a group"; | |
143 | ||
144 | std::cerr << std::endl | |
145 | << "Remove the image from the group and try again." | |
146 | << std::endl; | |
147 | image.close(); | |
7c673cae FG |
148 | } else { |
149 | std::cerr << "rbd: delete error: " << cpp_strerror(r) << std::endl; | |
150 | } | |
11fdf7f2 | 151 | return r; |
7c673cae FG |
152 | } |
153 | return 0; | |
154 | } | |
155 | ||
156 | Shell::Action action( | |
157 | {"remove"}, {"rm"}, "Delete an image.", "", &get_arguments, &execute); | |
158 | ||
159 | } // namespace remove | |
160 | } // namespace action | |
161 | } // namespace rbd |