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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 | |
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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 | }; |
22 | static struct fio_option options[] = { |
23 | { |
24 | .name = "volume", |
25 | .lname = "Glusterfs volume", |
26 | .type = FIO_OPT_STR_STORE, |
27 | .help = "Name of the Glusterfs volume", |
28 | .off1 = offsetof(struct gf_options, gf_vol), |
29 | .category = FIO_OPT_C_ENGINE, |
30 | .group = FIO_OPT_G_GFAPI, |
31 | }, |
32 | { |
33 | .name = "brick", |
34 | .lname = "Glusterfs brick name", |
35 | .type = FIO_OPT_STR_STORE, |
36 | .help = "Name of the Glusterfs brick to connect", |
37 | .off1 = offsetof(struct gf_options, gf_brick), |
38 | .category = FIO_OPT_C_ENGINE, |
39 | .group = FIO_OPT_G_GFAPI, |
40 | }, |
41 | { |
42 | .name = NULL, |
43 | }, |
44 | }; |
45 | |
46 | static int fio_gf_setup(struct thread_data *td) |
47 | { |
48 | int r = 0; |
49 | struct gf_data *g = NULL; |
50 | struct gf_options *opt = td->eo; |
51 | |
52 | if (td->io_ops->data) |
53 | return 0; |
54 | |
55 | g = malloc(sizeof(struct gf_data)); |
56 | if (!g){ |
57 | log_err("malloc failed.\n"); |
58 | return -ENOMEM; |
59 | } |
60 | g->fs = NULL; g->fd = NULL; |
61 | |
62 | g->fs = glfs_new (opt->gf_vol); |
63 | if (!g->fs){ |
64 | log_err("glfs_new failed.\n"); |
65 | goto cleanup; |
66 | } |
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67 | |
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68 | /* default to tcp */ |
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69 | r = glfs_set_volfile_server(g->fs, "tcp", opt->gf_brick, 24007); |
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70 | if (r){ |
71 | log_err("glfs_set_volfile_server failed.\n"); |
72 | goto cleanup; |
73 | } |
74 | r = glfs_init(g->fs); |
75 | if (r){ |
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76 | log_err("glfs_init failed.\n"); |
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77 | goto cleanup; |
78 | } |
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79 | glfs_set_logging (g->fs, "/dev/stderr", 7); |
80 | |
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81 | td->io_ops->data = g; |
82 | cleanup: |
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83 | if (g){ |
84 | if (g->fs){ |
85 | glfs_fini(g->fs); |
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86 | } |
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87 | free(g); |
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88 | } |
89 | return r; |
90 | } |
91 | |
92 | static void fio_gf_cleanup(struct thread_data *td) |
93 | { |
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94 | struct gf_data *g = td->io_ops->data; |
95 | |
96 | if (g){ |
97 | if (g->fs){ |
98 | glfs_fini(g->fs); |
99 | } |
100 | free(g); |
101 | } |
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102 | } |
103 | |
104 | static int fio_gf_get_file_size(struct thread_data *td, struct fio_file *f) |
105 | { |
106 | struct stat buf; |
107 | int ret; |
108 | struct gf_data *g = td->io_ops->data; |
109 | |
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110 | dprint(FD_FILE, "get file size %s\n", f->file_name); |
111 | |
112 | if (!g || !g->fs) |
113 | { |
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114 | return 0; |
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115 | } |
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116 | |
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117 | if (fio_file_size_known(f)) |
118 | return 0; |
119 | |
120 | ret = glfs_lstat (g->fs, f->file_name, &buf); |
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121 | if (ret < 0) |
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122 | return ret; |
123 | |
124 | f->real_file_size = buf.st_size; |
125 | fio_file_set_size_known(f); |
126 | |
127 | return 0; |
128 | |
129 | } |
130 | |
131 | static int fio_gf_open_file(struct thread_data *td, struct fio_file *f) |
132 | { |
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133 | struct gf_data *g = td->io_ops->data; |
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134 | int flags = 0; |
135 | |
136 | dprint(FD_FILE, "fd open %s\n", f->file_name); |
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137 | |
138 | if (td_write(td)) { |
139 | if (!read_only) |
140 | flags = O_RDWR; |
141 | } else if (td_read(td)) { |
142 | if (!read_only) |
143 | flags = O_RDWR; |
144 | else |
145 | flags = O_RDONLY; |
146 | } |
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147 | if (td->o.create_on_open) |
148 | flags |= O_CREAT; |
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149 | |
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150 | g->fd = glfs_open(g->fs, f->file_name, flags); |
151 | f->fd = -1; |
152 | return 0; |
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153 | } |
154 | |
155 | static int fio_gf_close_file(struct thread_data *td, struct fio_file *f) |
156 | { |
157 | int ret = 0; |
158 | struct gf_data *g = td->io_ops->data; |
159 | |
160 | dprint(FD_FILE, "fd close %s\n", f->file_name); |
161 | |
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162 | if (!g->fd && glfs_close(g->fd) < 0) |
163 | ret = errno; |
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164 | |
165 | g->fd = NULL; |
166 | f->engine_data = 0; |
167 | |
168 | return ret; |
169 | } |
170 | |
171 | #define LAST_POS(f) ((f)->engine_data) |
172 | static int fio_gf_prep(struct thread_data *td, struct io_u *io_u) |
173 | { |
174 | struct fio_file *f = io_u->file; |
175 | struct gf_data *g = td->io_ops->data; |
176 | |
177 | if (!ddir_rw(io_u->ddir)) |
178 | return 0; |
179 | |
180 | if (LAST_POS(f) != -1ULL && LAST_POS(f) == io_u->offset) |
181 | return 0; |
182 | |
183 | if (glfs_lseek(g->fd, io_u->offset, SEEK_SET) < 0) { |
184 | td_verror(td, errno, "lseek"); |
185 | return 1; |
186 | } |
187 | |
188 | return 0; |
189 | } |
190 | |
191 | static int fio_gf_queue(struct thread_data *td, struct io_u *io_u) |
192 | { |
193 | struct gf_data *g = td->io_ops->data; |
194 | int ret = 0; |
195 | |
196 | fio_ro_check(td, io_u); |
197 | |
198 | if (io_u->ddir == DDIR_READ) |
199 | ret = glfs_read(g->fd, io_u->xfer_buf, io_u->xfer_buflen, 0); |
200 | else if (io_u->ddir == DDIR_WRITE) |
201 | ret = glfs_write(g->fd, io_u->xfer_buf, io_u->xfer_buflen, 0); |
202 | else { |
203 | log_err("unsupported operation.\n"); |
204 | return -EINVAL; |
205 | } |
206 | if (io_u->file && ret >= 0 && ddir_rw(io_u->ddir)) |
207 | LAST_POS(io_u->file) = io_u->offset + ret; |
208 | |
209 | if (ret != (int) io_u->xfer_buflen) { |
210 | if (ret >= 0) { |
211 | io_u->resid = io_u->xfer_buflen - ret; |
212 | io_u->error = 0; |
213 | return FIO_Q_COMPLETED; |
214 | } else |
215 | io_u->error = errno; |
216 | } |
217 | |
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218 | if (io_u->error) |
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219 | td_verror(td, io_u->error, "xfer"); |
220 | |
221 | return FIO_Q_COMPLETED; |
222 | |
223 | } |
224 | |
225 | static struct ioengine_ops ioengine = { |
226 | .name = "gfapi", |
227 | .version = FIO_IOOPS_VERSION, |
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228 | .setup = fio_gf_setup, |
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229 | .cleanup = fio_gf_cleanup, |
230 | .prep = fio_gf_prep, |
231 | .queue = fio_gf_queue, |
232 | .open_file = fio_gf_open_file, |
233 | .close_file = fio_gf_close_file, |
234 | .get_file_size = fio_gf_get_file_size, |
235 | .options = options, |
236 | .option_struct_size = sizeof(struct gf_options), |
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237 | .flags = FIO_SYNCIO, |
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238 | }; |
239 | |
240 | static void fio_init fio_gf_register(void) |
241 | { |
242 | register_ioengine(&ioengine); |
243 | } |
244 | |
245 | static void fio_exit fio_gf_unregister(void) |
246 | { |
247 | unregister_ioengine(&ioengine); |
248 | } |