| 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 | dprint(FD_FILE, "get file size %s\n", f->file_name); |
| 111 | |
| 112 | if (!g || !g->fs) |
| 113 | { |
| 114 | return 0; |
| 115 | } |
| 116 | |
| 117 | if (fio_file_size_known(f)) |
| 118 | return 0; |
| 119 | |
| 120 | ret = glfs_lstat (g->fs, f->file_name, &buf); |
| 121 | if (ret < 0) |
| 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 | { |
| 133 | struct gf_data *g = td->io_ops->data; |
| 134 | int flags = 0; |
| 135 | |
| 136 | dprint(FD_FILE, "fd open %s\n", f->file_name); |
| 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 | } |
| 147 | if (td->o.create_on_open) |
| 148 | flags |= O_CREAT; |
| 149 | |
| 150 | g->fd = glfs_open(g->fs, f->file_name, flags); |
| 151 | f->fd = -1; |
| 152 | return 0; |
| 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 | |
| 162 | if (!g->fd && glfs_close(g->fd) < 0) |
| 163 | ret = errno; |
| 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 | |
| 218 | if (io_u->error) |
| 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, |
| 228 | .setup = fio_gf_setup, |
| 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), |
| 237 | .flags = FIO_SYNCIO, |
| 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 | } |