engines/glusterfs.c

   1 /*
   2  * glusterfs engine
   3  *
   4  * common Glusterfs's gfapi interface
   5  *
   6  */
   7
   8 #include "gfapi.h"
   9
  10 struct fio_option gfapi_options[] = {
  11         {
  12          .name = "volume",
  13          .lname = "Glusterfs volume",
  14          .type = FIO_OPT_STR_STORE,
  15          .help = "Name of the Glusterfs volume",
  16          .off1 = offsetof(struct gf_options, gf_vol),
  17          .category = FIO_OPT_C_ENGINE,
  18          .group = FIO_OPT_G_GFAPI,
  19          },
  20         {
  21          .name = "brick",
  22          .lname = "Glusterfs brick name",
  23          .type = FIO_OPT_STR_STORE,
  24          .help = "Name of the Glusterfs brick to connect",
  25          .off1 = offsetof(struct gf_options, gf_brick),
  26          .category = FIO_OPT_C_ENGINE,
  27          .group = FIO_OPT_G_GFAPI,
  28          },
  29         {
  30          .name = NULL,
  31          },
  32 };
  33
  34 int fio_gf_setup(struct thread_data *td)
  35 {
  36         int r = 0;
  37         struct gf_data *g = NULL;
  38         struct gf_options *opt = td->eo;
  39         struct stat sb = { 0, };
  40
  41         dprint(FD_IO, "fio setup\n");
  42
  43         if (td->io_ops->data)
  44                 return 0;
  45
  46         g = malloc(sizeof(struct gf_data));
  47         if (!g) {
  48                 log_err("malloc failed.\n");
  49                 return -ENOMEM;
  50         }
  51         g->fs = NULL;
  52         g->fd = NULL;
  53         g->aio_events = NULL;
  54
  55         g->fs = glfs_new(opt->gf_vol);
  56         if (!g->fs) {
  57                 log_err("glfs_new failed.\n");
  58                 goto cleanup;
  59         }
  60         glfs_set_logging(g->fs, "/tmp/fio_gfapi.log", 7);
  61         /* default to tcp */
  62         r = glfs_set_volfile_server(g->fs, "tcp", opt->gf_brick, 0);
  63         if (r) {
  64                 log_err("glfs_set_volfile_server failed.\n");
  65                 goto cleanup;
  66         }
  67         r = glfs_init(g->fs);
  68         if (r) {
  69                 log_err("glfs_init failed. Is glusterd running on brick?\n");
  70                 goto cleanup;
  71         }
  72         sleep(2);
  73         r = glfs_lstat(g->fs, ".", &sb);
  74         if (r) {
  75                 log_err("glfs_lstat failed.\n");
  76                 goto cleanup;
  77         }
  78         dprint(FD_FILE, "fio setup %p\n", g->fs);
  79         td->io_ops->data = g;
  80 cleanup:
  81         if (r) {
  82                 if (g) {
  83                         if (g->fs) {
  84                                 glfs_fini(g->fs);
  85                         }
  86                         free(g);
  87                         td->io_ops->data = NULL;
  88                 }
  89         }
  90         return r;
  91 }
  92
  93 void fio_gf_cleanup(struct thread_data *td)
  94 {
  95         struct gf_data *g = td->io_ops->data;
  96
  97         if (g) {
  98                 if (g->aio_events)
  99                         free(g->aio_events);
 100                 if (g->fd)
 101                         glfs_close(g->fd);
 102                 if (g->fs)
 103                         glfs_fini(g->fs);
 104                 free(g);
 105                 td->io_ops->data = NULL;
 106         }
 107 }
 108
 109 int fio_gf_get_file_size(struct thread_data *td, struct fio_file *f)
 110 {
 111         struct stat buf;
 112         int ret;
 113         struct gf_data *g = td->io_ops->data;
 114
 115         dprint(FD_FILE, "get file size %s\n", f->file_name);
 116
 117         if (!g || !g->fs) {
 118                 return 0;
 119         }
 120         if (fio_file_size_known(f))
 121                 return 0;
 122
 123         ret = glfs_lstat(g->fs, f->file_name, &buf);
 124         if (ret < 0) {
 125                 log_err("glfs_lstat failed.\n");
 126                 return ret;
 127         }
 128
 129         f->real_file_size = buf.st_size;
 130         fio_file_set_size_known(f);
 131
 132         return 0;
 133
 134 }
 135
 136 int fio_gf_open_file(struct thread_data *td, struct fio_file *f)
 137 {
 138
 139         int flags = 0;
 140         int ret = 0;
 141         struct gf_data *g = td->io_ops->data;
 142         struct stat sb = { 0, };
 143
 144         if (td_write(td)) {
 145                 if (!read_only)
 146                         flags = O_RDWR;
 147         } else if (td_read(td)) {
 148                 if (!read_only)
 149                         flags = O_RDWR;
 150                 else
 151                         flags = O_RDONLY;
 152         }
 153
 154         if (td->o.odirect)
 155                 flags |= OS_O_DIRECT;
 156         if (td->o.sync_io)
 157                 flags |= O_SYNC;
 158
 159         dprint(FD_FILE, "fio file %s open mode %s td rw %s\n", f->file_name,
 160                flags & O_RDONLY ? "ro" : "rw", td_read(td) ? "read" : "write");
 161         g->fd = glfs_creat(g->fs, f->file_name, flags, 0644);
 162         if (!g->fd) {
 163                 log_err("glfs_creat failed.\n");
 164                 ret = errno;
 165         }
 166         /* file for read doesn't exist or shorter than required, create/extend it */
 167         if (td_read(td)) {
 168                 if (glfs_lstat(g->fs, f->file_name, &sb)
 169                     || sb.st_size < f->real_file_size) {
 170                         dprint(FD_FILE, "fio extend file %s from %ld to %ld\n",
 171                                f->file_name, sb.st_size, f->real_file_size);
 172                         ret = glfs_ftruncate(g->fd, f->real_file_size);
 173                         if (ret) {
 174                                 log_err("failed fio extend file %s to %ld\n",
 175                                         f->file_name, f->real_file_size);
 176                         } else {
 177                                 unsigned long long left;
 178                                 unsigned int bs;
 179                                 char *b;
 180                                 int r;
 181
 182                                 /* fill the file, copied from extend_file */
 183                                 b = malloc(td->o.max_bs[DDIR_WRITE]);
 184
 185                                 left = f->real_file_size;
 186                                 while (left && !td->terminate) {
 187                                         bs = td->o.max_bs[DDIR_WRITE];
 188                                         if (bs > left)
 189                                                 bs = left;
 190
 191                                         fill_io_buffer(td, b, bs, bs);
 192
 193                                         r = glfs_write(g->fd, b, bs, 0);
 194                                         dprint(FD_IO,
 195                                                "fio write %d of %ld file %s\n",
 196                                                r, f->real_file_size,
 197                                                f->file_name);
 198
 199                                         if (r > 0) {
 200                                                 left -= r;
 201                                                 continue;
 202                                         } else {
 203                                                 if (r < 0) {
 204                                                         int __e = errno;
 205
 206                                                         if (__e == ENOSPC) {
 207                                                                 if (td->o.
 208                                                                     fill_device)
 209                                                                         break;
 210                                                                 log_info
 211                                                                     ("fio: ENOSPC on laying out "
 212                                                                      "file, stopping\n");
 213                                                                 break;
 214                                                         }
 215                                                         td_verror(td, errno,
 216                                                                   "write");
 217                                                 } else
 218                                                         td_verror(td, EIO,
 219                                                                   "write");
 220
 221                                                 break;
 222                                         }
 223                                 }
 224
 225                                 if (b)
 226                                         free(b);
 227                                 glfs_lseek(g->fd, 0, SEEK_SET);
 228
 229                                 if (td->terminate) {
 230                                         dprint(FD_FILE, "terminate unlink %s\n",
 231                                                f->file_name);
 232                                         unlink(f->file_name);
 233                                 } else if (td->o.create_fsync) {
 234                                         if (glfs_fsync(g->fd) < 0) {
 235                                                 dprint(FD_FILE,
 236                                                        "failed to sync, close %s\n",
 237                                                        f->file_name);
 238                                                 td_verror(td, errno, "fsync");
 239                                                 glfs_close(g->fd);
 240                                                 g->fd = NULL;
 241                                                 return 1;
 242                                         }
 243                                 }
 244                         }
 245                 }
 246         }
 247 #if defined(GFAPI_USE_FADVISE)
 248         {
 249                 int r = 0;
 250                 if (td_random(td)) {
 251                         r = glfs_fadvise(g->fd, 0, f->real_file_size,
 252                                          POSIX_FADV_RANDOM);
 253                 } else {
 254                         r = glfs_fadvise(g->fd, 0, f->real_file_size,
 255                                          POSIX_FADV_SEQUENTIAL);
 256                 }
 257                 if (r) {
 258                         dprint(FD_FILE, "fio %p fadvise %s status %d\n", g->fs,
 259                                f->file_name, r);
 260                 }
 261         }
 262 #endif
 263         dprint(FD_FILE, "fio %p created %s\n", g->fs, f->file_name);
 264         f->fd = -1;
 265         f->shadow_fd = -1;
 266
 267         return ret;
 268 }
 269
 270 int fio_gf_close_file(struct thread_data *td, struct fio_file *f)
 271 {
 272         int ret = 0;
 273         struct gf_data *g = td->io_ops->data;
 274
 275         dprint(FD_FILE, "fd close %s\n", f->file_name);
 276
 277         if (g) {
 278                 if (g->fd && glfs_close(g->fd) < 0)
 279                         ret = errno;
 280
 281                 if (g->fs)
 282                         glfs_fini(g->fs);
 283
 284                 g->fd = NULL;
 285                 free(g);
 286         }
 287         td->io_ops->data = NULL;
 288         f->engine_data = 0;
 289
 290         return ret;
 291 }