6e7d7dfb |
1 | /* |
2 | * glusterfs engine |
3 | * |
4 | * IO engine using Glusterfs's gfapi interface |
5 | * |
6 | */ |
7 | |
8 | #include <glusterfs/api/glfs.h> |
9 | |
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 | } |
67 | |
68 | /* default to tcp */ |
69 | r = glfs_set_volfile_server(g->fs, "tcp", opt->gf_brick, 24007); |
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){ |
76 | log_err("glfs_init failed.\n"); |
77 | goto cleanup; |
78 | } |
79 | glfs_set_logging (g->fs, "/dev/stderr", 7); |
80 | |
81 | td->io_ops->data = g; |
82 | cleanup: |
83 | if (g){ |
84 | if (g->fs){ |
85 | glfs_fini(g->fs); |
86 | } |
87 | free(g); |
88 | } |
89 | return r; |
90 | } |
91 | |
92 | static void fio_gf_cleanup(struct thread_data *td) |
93 | { |
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 | } |
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 | |
110 | if (fio_file_size_known(f)) |
111 | return 0; |
112 | |
113 | ret = glfs_lstat (g->fs, f->file_name, &buf); |
114 | if (ret < 0) |
115 | return ret; |
116 | |
117 | f->real_file_size = buf.st_size; |
118 | fio_file_set_size_known(f); |
119 | |
120 | return 0; |
121 | |
122 | } |
123 | |
124 | static int fio_gf_open_file(struct thread_data *td, struct fio_file *f) |
125 | { |
126 | struct gf_data *g = td->io_ops->data; |
127 | int flags = 0; |
128 | |
129 | dprint(FD_FILE, "fd open %s\n", f->file_name); |
130 | |
131 | if (td_write(td)) { |
132 | if (!read_only) |
133 | flags = O_RDWR; |
134 | } else if (td_read(td)) { |
135 | if (!read_only) |
136 | flags = O_RDWR; |
137 | else |
138 | flags = O_RDONLY; |
139 | } |
140 | if (td->o.create_on_open) |
141 | flags |= O_CREAT; |
142 | |
143 | g->fd = glfs_open(g->fs, f->file_name, flags); |
144 | f->fd = -1; |
145 | return 0; |
146 | } |
147 | |
148 | static int fio_gf_close_file(struct thread_data *td, struct fio_file *f) |
149 | { |
150 | int ret = 0; |
151 | struct gf_data *g = td->io_ops->data; |
152 | |
153 | dprint(FD_FILE, "fd close %s\n", f->file_name); |
154 | |
155 | if (!g->fd && glfs_close(g->fd) < 0) |
156 | ret = errno; |
157 | |
158 | g->fd = NULL; |
159 | f->engine_data = 0; |
160 | |
161 | return ret; |
162 | } |
163 | |
164 | #define LAST_POS(f) ((f)->engine_data) |
165 | static int fio_gf_prep(struct thread_data *td, struct io_u *io_u) |
166 | { |
167 | struct fio_file *f = io_u->file; |
168 | struct gf_data *g = td->io_ops->data; |
169 | |
170 | if (!ddir_rw(io_u->ddir)) |
171 | return 0; |
172 | |
173 | if (LAST_POS(f) != -1ULL && LAST_POS(f) == io_u->offset) |
174 | return 0; |
175 | |
176 | if (glfs_lseek(g->fd, io_u->offset, SEEK_SET) < 0) { |
177 | td_verror(td, errno, "lseek"); |
178 | return 1; |
179 | } |
180 | |
181 | return 0; |
182 | } |
183 | |
184 | static int fio_gf_queue(struct thread_data *td, struct io_u *io_u) |
185 | { |
186 | struct gf_data *g = td->io_ops->data; |
187 | int ret = 0; |
188 | |
189 | fio_ro_check(td, io_u); |
190 | |
191 | if (io_u->ddir == DDIR_READ) |
192 | ret = glfs_read(g->fd, io_u->xfer_buf, io_u->xfer_buflen, 0); |
193 | else if (io_u->ddir == DDIR_WRITE) |
194 | ret = glfs_write(g->fd, io_u->xfer_buf, io_u->xfer_buflen, 0); |
195 | else { |
196 | log_err("unsupported operation.\n"); |
197 | return -EINVAL; |
198 | } |
199 | if (io_u->file && ret >= 0 && ddir_rw(io_u->ddir)) |
200 | LAST_POS(io_u->file) = io_u->offset + ret; |
201 | |
202 | if (ret != (int) io_u->xfer_buflen) { |
203 | if (ret >= 0) { |
204 | io_u->resid = io_u->xfer_buflen - ret; |
205 | io_u->error = 0; |
206 | return FIO_Q_COMPLETED; |
207 | } else |
208 | io_u->error = errno; |
209 | } |
210 | |
211 | if (io_u->error) |
212 | td_verror(td, io_u->error, "xfer"); |
213 | |
214 | return FIO_Q_COMPLETED; |
215 | |
216 | } |
217 | |
218 | static struct ioengine_ops ioengine = { |
219 | .name = "gfapi", |
220 | .version = FIO_IOOPS_VERSION, |
221 | .setup = fio_gf_setup, |
222 | .cleanup = fio_gf_cleanup, |
223 | .prep = fio_gf_prep, |
224 | .queue = fio_gf_queue, |
225 | .open_file = fio_gf_open_file, |
226 | .close_file = fio_gf_close_file, |
227 | .get_file_size = fio_gf_get_file_size, |
228 | .options = options, |
229 | .option_struct_size = sizeof(struct gf_options), |
230 | .flags = FIO_SYNCIO, |
231 | }; |
232 | |
233 | static void fio_init fio_gf_register(void) |
234 | { |
235 | register_ioengine(&ioengine); |
236 | } |
237 | |
238 | static void fio_exit fio_gf_unregister(void) |
239 | { |
240 | unregister_ioengine(&ioengine); |
241 | } |