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         dprint(FD_FILE, "fio file %s open mode %s td rw %s\n", f->file_name,
 154                flags == O_RDONLY ? "ro" : "rw", td_read(td) ? "read" : "write");
 155         g->fd = glfs_creat(g->fs, f->file_name, flags, 0644);
 156         if (!g->fd) {
 157                 log_err("glfs_creat failed.\n");
 158                 ret = errno;
 159         }
 160         /* file for read doesn't exist or shorter than required, create/extend it */
 161         if (td_read(td)) {
 162                 if (glfs_lstat(g->fs, f->file_name, &sb)
 163                     || sb.st_size < f->real_file_size) {
 164                         dprint(FD_FILE, "fio extend file %s from %ld to %ld\n",
 165                                f->file_name, sb.st_size, f->real_file_size);
 166                         ret = glfs_ftruncate(g->fd, f->real_file_size);
 167                         if (ret) {
 168                                 log_err("failed fio extend file %s to %ld\n",
 169                                         f->file_name, f->real_file_size);
 170                         } else {
 171                                 unsigned long long left;
 172                                 unsigned int bs;
 173                                 char *b;
 174                                 int r;
 175
 176                                 /* fill the file, copied from extend_file */
 177                                 b = malloc(td->o.max_bs[DDIR_WRITE]);
 178
 179                                 left = f->real_file_size;
 180                                 while (left && !td->terminate) {
 181                                         bs = td->o.max_bs[DDIR_WRITE];
 182                                         if (bs > left)
 183                                                 bs = left;
 184
 185                                         fill_io_buffer(td, b, bs, bs);
 186
 187                                         r = glfs_write(g->fd, b, bs, 0);
 188                                         dprint(FD_IO,
 189                                                "fio write %d of %ld file %s\n",
 190                                                r, f->real_file_size,
 191                                                f->file_name);
 192
 193                                         if (r > 0) {
 194                                                 left -= r;
 195                                                 continue;
 196                                         } else {
 197                                                 if (r < 0) {
 198                                                         int __e = errno;
 199
 200                                                         if (__e == ENOSPC) {
 201                                                                 if (td->o.
 202                                                                     fill_device)
 203                                                                         break;
 204                                                                 log_info
 205                                                                     ("fio: ENOSPC on laying out "
 206                                                                      "file, stopping\n");
 207                                                                 break;
 208                                                         }
 209                                                         td_verror(td, errno,
 210                                                                   "write");
 211                                                 } else
 212                                                         td_verror(td, EIO,
 213                                                                   "write");
 214
 215                                                 break;
 216                                         }
 217                                 }
 218
 219                                 if (b)
 220                                         free(b);
 221                                 glfs_lseek(g->fd, 0, SEEK_SET);
 222
 223                                 if (td->terminate) {
 224                                         dprint(FD_FILE, "terminate unlink %s\n",
 225                                                f->file_name);
 226                                         unlink(f->file_name);
 227                                 } else if (td->o.create_fsync) {
 228                                         if (glfs_fsync(g->fd) < 0) {
 229                                                 dprint(FD_FILE,
 230                                                        "failed to sync, close %s\n",
 231                                                        f->file_name);
 232                                                 td_verror(td, errno, "fsync");
 233                                                 glfs_close(g->fd);
 234                                                 g->fd = NULL;
 235                                                 return 1;
 236                                         }
 237                                 }
 238                         }
 239                 }
 240         }
 241 #if defined(GFAPI_USE_FADVISE)
 242         {
 243                 int r = 0;
 244                 if (td_random(td)) {
 245                         r = glfs_fadvise(g->fd, 0, f->real_file_size,
 246                                          POSIX_FADV_RANDOM);
 247                 } else {
 248                         r = glfs_fadvise(g->fd, 0, f->real_file_size,
 249                                          POSIX_FADV_SEQUENTIAL);
 250                 }
 251                 if (r) {
 252                         dprint(FD_FILE, "fio %p fadvise %s status %d\n", g->fs,
 253                                f->file_name, r);
 254                 }
 255         }
 256 #endif
 257         dprint(FD_FILE, "fio %p created %s\n", g->fs, f->file_name);
 258         f->fd = -1;
 259         f->shadow_fd = -1;
 260
 261         return ret;
 262 }
 263
 264 int fio_gf_close_file(struct thread_data *td, struct fio_file *f)
 265 {
 266         int ret = 0;
 267         struct gf_data *g = td->io_ops->data;
 268
 269         dprint(FD_FILE, "fd close %s\n", f->file_name);
 270
 271         if (g) {
 272                 if (g->fd && glfs_close(g->fd) < 0)
 273                         ret = errno;
 274
 275                 if (g->fs)
 276                         glfs_fini(g->fs);
 277
 278                 g->fd = NULL;
 279                 free(g);
 280         }
 281         td->io_ops->data = NULL;
 282         f->engine_data = 0;
 283
 284         return ret;
 285 }