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1 | /* |
2 | * glusterfs engine |
3 | * |
4 | * IO engine using Glusterfs's gfapi interface |
5 | * |
6 | */ |
7 | |
8 | #include <glusterfs/api/glfs.h> |
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9 | #include <glusterfs/api/glfs-handles.h> |
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10 | #include "../fio.h" |
11 | |
12 | struct gf_options { |
13 | struct thread_data *td; |
14 | char *gf_vol; |
15 | char *gf_brick; |
16 | }; |
17 | |
18 | struct gf_data { |
19 | glfs_t *fs; |
20 | glfs_fd_t *fd; |
21 | }; |
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22 | |
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23 | static struct fio_option options[] = { |
24 | { |
25 | .name = "volume", |
26 | .lname = "Glusterfs volume", |
27 | .type = FIO_OPT_STR_STORE, |
28 | .help = "Name of the Glusterfs volume", |
29 | .off1 = offsetof(struct gf_options, gf_vol), |
30 | .category = FIO_OPT_C_ENGINE, |
31 | .group = FIO_OPT_G_GFAPI, |
32 | }, |
33 | { |
34 | .name = "brick", |
35 | .lname = "Glusterfs brick name", |
36 | .type = FIO_OPT_STR_STORE, |
37 | .help = "Name of the Glusterfs brick to connect", |
38 | .off1 = offsetof(struct gf_options, gf_brick), |
39 | .category = FIO_OPT_C_ENGINE, |
40 | .group = FIO_OPT_G_GFAPI, |
41 | }, |
42 | { |
43 | .name = NULL, |
44 | }, |
45 | }; |
46 | |
47 | static int fio_gf_setup(struct thread_data *td) |
48 | { |
49 | int r = 0; |
50 | struct gf_data *g = NULL; |
51 | struct gf_options *opt = td->eo; |
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52 | struct stat sb = {0, }; |
53 | |
54 | dprint(FD_IO, "fio setup\n"); |
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55 | |
56 | if (td->io_ops->data) |
57 | return 0; |
58 | |
59 | g = malloc(sizeof(struct gf_data)); |
60 | if (!g){ |
61 | log_err("malloc failed.\n"); |
62 | return -ENOMEM; |
63 | } |
64 | g->fs = NULL; g->fd = NULL; |
65 | |
66 | g->fs = glfs_new (opt->gf_vol); |
67 | if (!g->fs){ |
68 | log_err("glfs_new failed.\n"); |
69 | goto cleanup; |
70 | } |
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71 | glfs_set_logging (g->fs, "/tmp/fio_gfapi.log", 7); |
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72 | /* default to tcp */ |
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73 | r = glfs_set_volfile_server(g->fs, "tcp", opt->gf_brick, 0); |
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74 | if (r){ |
75 | log_err("glfs_set_volfile_server failed.\n"); |
76 | goto cleanup; |
77 | } |
78 | r = glfs_init(g->fs); |
79 | if (r){ |
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80 | log_err("glfs_init failed. Is glusterd running on brick?\n"); |
81 | goto cleanup; |
82 | } |
83 | sleep(2); |
84 | r = glfs_lstat (g->fs, ".", &sb); |
85 | if (r){ |
86 | log_err("glfs_lstat failed.\n"); |
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87 | goto cleanup; |
88 | } |
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89 | dprint(FD_FILE, "fio setup %p\n", g->fs); |
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90 | td->io_ops->data = g; |
91 | cleanup: |
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92 | if (r){ |
93 | if (g){ |
94 | if (g->fs){ |
95 | glfs_fini(g->fs); |
96 | } |
97 | free(g); |
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98 | } |
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99 | } |
100 | return r; |
101 | } |
102 | |
103 | static void fio_gf_cleanup(struct thread_data *td) |
104 | { |
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105 | } |
106 | |
107 | static int fio_gf_get_file_size(struct thread_data *td, struct fio_file *f) |
108 | { |
109 | struct stat buf; |
110 | int ret; |
111 | struct gf_data *g = td->io_ops->data; |
112 | |
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113 | dprint(FD_FILE, "get file size %s\n", f->file_name); |
114 | |
115 | if (!g || !g->fs) |
116 | { |
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117 | return 0; |
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118 | } |
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119 | if (fio_file_size_known(f)) |
120 | return 0; |
121 | |
122 | ret = glfs_lstat (g->fs, f->file_name, &buf); |
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123 | if (ret < 0){ |
124 | log_err("glfs_lstat failed.\n"); |
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125 | return ret; |
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126 | } |
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127 | |
128 | f->real_file_size = buf.st_size; |
129 | fio_file_set_size_known(f); |
130 | |
131 | return 0; |
132 | |
133 | } |
134 | |
135 | static int fio_gf_open_file(struct thread_data *td, struct fio_file *f) |
136 | { |
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137 | |
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138 | int flags = 0; |
139 | int ret = 0; |
140 | struct gf_data *g = td->io_ops->data; |
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141 | |
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142 | dprint(FD_FILE, "fio open %s\n", f->file_name); |
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143 | if (td_write(td)) { |
144 | if (!read_only) |
145 | flags = O_RDWR; |
146 | } else if (td_read(td)) { |
147 | if (!read_only) |
148 | flags = O_RDWR; |
149 | else |
150 | flags = O_RDONLY; |
151 | } |
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152 | g->fd = glfs_creat(g->fs, f->file_name, flags, 0644); |
153 | if (!g->fd){ |
154 | log_err("glfs_creat failed.\n"); |
155 | ret = errno; |
156 | } |
157 | dprint(FD_FILE, "fio %p created %s\n", g->fs, f->file_name); |
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158 | f->fd = -1; |
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159 | f->shadow_fd = -1; |
160 | |
161 | return ret; |
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162 | } |
163 | |
164 | static int fio_gf_close_file(struct thread_data *td, struct fio_file *f) |
165 | { |
166 | int ret = 0; |
167 | struct gf_data *g = td->io_ops->data; |
168 | |
169 | dprint(FD_FILE, "fd close %s\n", f->file_name); |
170 | |
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171 | if (g->fd && glfs_close(g->fd) < 0) |
172 | ret = errno; |
173 | |
174 | if (g->fs) |
175 | glfs_fini(g->fs); |
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176 | |
177 | g->fd = NULL; |
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178 | free(g); |
179 | td->io_ops->data = NULL; |
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180 | f->engine_data = 0; |
181 | |
182 | return ret; |
183 | } |
184 | |
185 | #define LAST_POS(f) ((f)->engine_data) |
186 | static int fio_gf_prep(struct thread_data *td, struct io_u *io_u) |
187 | { |
188 | struct fio_file *f = io_u->file; |
189 | struct gf_data *g = td->io_ops->data; |
190 | |
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191 | dprint(FD_FILE, "fio prep\n"); |
192 | |
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193 | if (!ddir_rw(io_u->ddir)) |
194 | return 0; |
195 | |
196 | if (LAST_POS(f) != -1ULL && LAST_POS(f) == io_u->offset) |
197 | return 0; |
198 | |
199 | if (glfs_lseek(g->fd, io_u->offset, SEEK_SET) < 0) { |
200 | td_verror(td, errno, "lseek"); |
201 | return 1; |
202 | } |
203 | |
204 | return 0; |
205 | } |
206 | |
207 | static int fio_gf_queue(struct thread_data *td, struct io_u *io_u) |
208 | { |
209 | struct gf_data *g = td->io_ops->data; |
210 | int ret = 0; |
211 | |
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212 | dprint(FD_FILE, "fio queue len %lu\n", io_u->xfer_buflen); |
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213 | fio_ro_check(td, io_u); |
214 | |
215 | if (io_u->ddir == DDIR_READ) |
216 | ret = glfs_read(g->fd, io_u->xfer_buf, io_u->xfer_buflen, 0); |
217 | else if (io_u->ddir == DDIR_WRITE) |
218 | ret = glfs_write(g->fd, io_u->xfer_buf, io_u->xfer_buflen, 0); |
219 | else { |
220 | log_err("unsupported operation.\n"); |
221 | return -EINVAL; |
222 | } |
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223 | |
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224 | if (io_u->file && ret >= 0 && ddir_rw(io_u->ddir)) |
225 | LAST_POS(io_u->file) = io_u->offset + ret; |
226 | |
227 | if (ret != (int) io_u->xfer_buflen) { |
228 | if (ret >= 0) { |
229 | io_u->resid = io_u->xfer_buflen - ret; |
230 | io_u->error = 0; |
231 | return FIO_Q_COMPLETED; |
232 | } else |
233 | io_u->error = errno; |
234 | } |
235 | |
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236 | if (io_u->error){ |
237 | log_err("IO failed.\n"); |
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238 | td_verror(td, io_u->error, "xfer"); |
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239 | } |
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240 | |
241 | return FIO_Q_COMPLETED; |
242 | |
243 | } |
244 | |
245 | static struct ioengine_ops ioengine = { |
246 | .name = "gfapi", |
247 | .version = FIO_IOOPS_VERSION, |
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248 | .init = fio_gf_setup, |
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249 | .cleanup = fio_gf_cleanup, |
250 | .prep = fio_gf_prep, |
251 | .queue = fio_gf_queue, |
252 | .open_file = fio_gf_open_file, |
253 | .close_file = fio_gf_close_file, |
254 | .get_file_size = fio_gf_get_file_size, |
255 | .options = options, |
256 | .option_struct_size = sizeof(struct gf_options), |
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257 | .flags = FIO_SYNCIO | FIO_DISKLESSIO, |
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258 | }; |
259 | |
260 | static void fio_init fio_gf_register(void) |
261 | { |
262 | register_ioengine(&ioengine); |
263 | } |
264 | |
265 | static void fio_exit fio_gf_unregister(void) |
266 | { |
267 | unregister_ioengine(&ioengine); |
268 | } |