| 1 | /* |
| 2 | * sg engine |
| 3 | * |
| 4 | * IO engine that uses the Linux SG v3 interface to talk to SCSI devices |
| 5 | * |
| 6 | * This ioengine can operate in two modes: |
| 7 | * sync with block devices (/dev/sdX) or |
| 8 | * with character devices (/dev/sgY) with direct=1 or sync=1 |
| 9 | * async with character devices with direct=0 and sync=0 |
| 10 | * |
| 11 | * What value does queue() return for the different cases? |
| 12 | * queue() return value |
| 13 | * In sync mode: |
| 14 | * /dev/sdX RWT FIO_Q_COMPLETED |
| 15 | * /dev/sgY RWT FIO_Q_COMPLETED |
| 16 | * with direct=1 or sync=1 |
| 17 | * |
| 18 | * In async mode: |
| 19 | * /dev/sgY RWT FIO_Q_QUEUED |
| 20 | * direct=0 and sync=0 |
| 21 | * |
| 22 | * Because FIO_SYNCIO is set for this ioengine td_io_queue() will fill in |
| 23 | * issue_time *before* each IO is sent to queue() |
| 24 | * |
| 25 | * Where are the IO counting functions called for the different cases? |
| 26 | * |
| 27 | * In sync mode: |
| 28 | * /dev/sdX (commit==NULL) |
| 29 | * RWT |
| 30 | * io_u_mark_depth() called in td_io_queue() |
| 31 | * io_u_mark_submit/complete() called in td_io_queue() |
| 32 | * issue_time set in td_io_queue() |
| 33 | * |
| 34 | * /dev/sgY with direct=1 or sync=1 (commit does nothing) |
| 35 | * RWT |
| 36 | * io_u_mark_depth() called in td_io_queue() |
| 37 | * io_u_mark_submit/complete() called in queue() |
| 38 | * issue_time set in td_io_queue() |
| 39 | * |
| 40 | * In async mode: |
| 41 | * /dev/sgY with direct=0 and sync=0 |
| 42 | * RW: read and write operations are submitted in queue() |
| 43 | * io_u_mark_depth() called in td_io_commit() |
| 44 | * io_u_mark_submit() called in queue() |
| 45 | * issue_time set in td_io_queue() |
| 46 | * T: trim operations are queued in queue() and submitted in commit() |
| 47 | * io_u_mark_depth() called in td_io_commit() |
| 48 | * io_u_mark_submit() called in commit() |
| 49 | * issue_time set in commit() |
| 50 | * |
| 51 | */ |
| 52 | #include <stdio.h> |
| 53 | #include <stdlib.h> |
| 54 | #include <unistd.h> |
| 55 | #include <errno.h> |
| 56 | #include <poll.h> |
| 57 | |
| 58 | #include "../fio.h" |
| 59 | #include "../optgroup.h" |
| 60 | |
| 61 | #ifdef FIO_HAVE_SGIO |
| 62 | |
| 63 | enum { |
| 64 | FIO_SG_WRITE = 1, |
| 65 | FIO_SG_WRITE_VERIFY = 2, |
| 66 | FIO_SG_WRITE_SAME = 3 |
| 67 | }; |
| 68 | |
| 69 | struct sg_options { |
| 70 | void *pad; |
| 71 | unsigned int readfua; |
| 72 | unsigned int writefua; |
| 73 | unsigned int write_mode; |
| 74 | }; |
| 75 | |
| 76 | static struct fio_option options[] = { |
| 77 | { |
| 78 | .name = "readfua", |
| 79 | .lname = "sg engine read fua flag support", |
| 80 | .type = FIO_OPT_BOOL, |
| 81 | .off1 = offsetof(struct sg_options, readfua), |
| 82 | .help = "Set FUA flag (force unit access) for all Read operations", |
| 83 | .def = "0", |
| 84 | .category = FIO_OPT_C_ENGINE, |
| 85 | .group = FIO_OPT_G_SG, |
| 86 | }, |
| 87 | { |
| 88 | .name = "writefua", |
| 89 | .lname = "sg engine write fua flag support", |
| 90 | .type = FIO_OPT_BOOL, |
| 91 | .off1 = offsetof(struct sg_options, writefua), |
| 92 | .help = "Set FUA flag (force unit access) for all Write operations", |
| 93 | .def = "0", |
| 94 | .category = FIO_OPT_C_ENGINE, |
| 95 | .group = FIO_OPT_G_SG, |
| 96 | }, |
| 97 | { |
| 98 | .name = "sg_write_mode", |
| 99 | .lname = "specify sg write mode", |
| 100 | .type = FIO_OPT_STR, |
| 101 | .off1 = offsetof(struct sg_options, write_mode), |
| 102 | .help = "Specify SCSI WRITE mode", |
| 103 | .def = "write", |
| 104 | .posval = { |
| 105 | { .ival = "write", |
| 106 | .oval = FIO_SG_WRITE, |
| 107 | .help = "Issue standard SCSI WRITE commands", |
| 108 | }, |
| 109 | { .ival = "verify", |
| 110 | .oval = FIO_SG_WRITE_VERIFY, |
| 111 | .help = "Issue SCSI WRITE AND VERIFY commands", |
| 112 | }, |
| 113 | { .ival = "same", |
| 114 | .oval = FIO_SG_WRITE_SAME, |
| 115 | .help = "Issue SCSI WRITE SAME commands", |
| 116 | }, |
| 117 | }, |
| 118 | .category = FIO_OPT_C_ENGINE, |
| 119 | .group = FIO_OPT_G_SG, |
| 120 | }, |
| 121 | { |
| 122 | .name = NULL, |
| 123 | }, |
| 124 | }; |
| 125 | |
| 126 | #define MAX_10B_LBA 0xFFFFFFFFULL |
| 127 | #define SCSI_TIMEOUT_MS 30000 // 30 second timeout; currently no method to override |
| 128 | #define MAX_SB 64 // sense block maximum return size |
| 129 | |
| 130 | struct sgio_cmd { |
| 131 | unsigned char cdb[16]; // enhanced from 10 to support 16 byte commands |
| 132 | unsigned char sb[MAX_SB]; // add sense block to commands |
| 133 | int nr; |
| 134 | }; |
| 135 | |
| 136 | struct sgio_trim { |
| 137 | char *unmap_param; |
| 138 | unsigned int unmap_range_count; |
| 139 | struct io_u **trim_io_us; |
| 140 | }; |
| 141 | |
| 142 | struct sgio_data { |
| 143 | struct sgio_cmd *cmds; |
| 144 | struct io_u **events; |
| 145 | struct pollfd *pfds; |
| 146 | int *fd_flags; |
| 147 | void *sgbuf; |
| 148 | unsigned int bs; |
| 149 | int type_checked; |
| 150 | struct sgio_trim **trim_queues; |
| 151 | int current_queue; |
| 152 | unsigned int *trim_queue_map; |
| 153 | }; |
| 154 | |
| 155 | static inline bool sgio_unbuffered(struct thread_data *td) |
| 156 | { |
| 157 | return (td->o.odirect || td->o.sync_io); |
| 158 | } |
| 159 | |
| 160 | static void sgio_hdr_init(struct sgio_data *sd, struct sg_io_hdr *hdr, |
| 161 | struct io_u *io_u, int fs) |
| 162 | { |
| 163 | struct sgio_cmd *sc = &sd->cmds[io_u->index]; |
| 164 | |
| 165 | memset(hdr, 0, sizeof(*hdr)); |
| 166 | memset(sc->cdb, 0, sizeof(sc->cdb)); |
| 167 | |
| 168 | hdr->interface_id = 'S'; |
| 169 | hdr->cmdp = sc->cdb; |
| 170 | hdr->cmd_len = sizeof(sc->cdb); |
| 171 | hdr->sbp = sc->sb; |
| 172 | hdr->mx_sb_len = sizeof(sc->sb); |
| 173 | hdr->pack_id = io_u->index; |
| 174 | hdr->usr_ptr = io_u; |
| 175 | hdr->timeout = SCSI_TIMEOUT_MS; |
| 176 | |
| 177 | if (fs) { |
| 178 | hdr->dxferp = io_u->xfer_buf; |
| 179 | hdr->dxfer_len = io_u->xfer_buflen; |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | static int pollin_events(struct pollfd *pfds, int fds) |
| 184 | { |
| 185 | int i; |
| 186 | |
| 187 | for (i = 0; i < fds; i++) |
| 188 | if (pfds[i].revents & POLLIN) |
| 189 | return 1; |
| 190 | |
| 191 | return 0; |
| 192 | } |
| 193 | |
| 194 | static int sg_fd_read(int fd, void *data, size_t size) |
| 195 | { |
| 196 | int err = 0; |
| 197 | |
| 198 | while (size) { |
| 199 | ssize_t ret; |
| 200 | |
| 201 | ret = read(fd, data, size); |
| 202 | if (ret < 0) { |
| 203 | if (errno == EAGAIN || errno == EINTR) |
| 204 | continue; |
| 205 | err = errno; |
| 206 | break; |
| 207 | } else if (!ret) |
| 208 | break; |
| 209 | else { |
| 210 | data += ret; |
| 211 | size -= ret; |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | if (err) |
| 216 | return err; |
| 217 | if (size) |
| 218 | return EAGAIN; |
| 219 | |
| 220 | return 0; |
| 221 | } |
| 222 | |
| 223 | static int fio_sgio_getevents(struct thread_data *td, unsigned int min, |
| 224 | unsigned int max, |
| 225 | const struct timespec fio_unused *t) |
| 226 | { |
| 227 | struct sgio_data *sd = td->io_ops_data; |
| 228 | int left = max, eventNum, ret, r = 0, trims = 0; |
| 229 | void *buf = sd->sgbuf; |
| 230 | unsigned int i, j, events; |
| 231 | struct fio_file *f; |
| 232 | struct io_u *io_u; |
| 233 | |
| 234 | /* |
| 235 | * Fill in the file descriptors |
| 236 | */ |
| 237 | for_each_file(td, f, i) { |
| 238 | /* |
| 239 | * don't block for min events == 0 |
| 240 | */ |
| 241 | if (!min) |
| 242 | sd->fd_flags[i] = fio_set_fd_nonblocking(f->fd, "sg"); |
| 243 | else |
| 244 | sd->fd_flags[i] = -1; |
| 245 | |
| 246 | sd->pfds[i].fd = f->fd; |
| 247 | sd->pfds[i].events = POLLIN; |
| 248 | } |
| 249 | |
| 250 | /* |
| 251 | ** There are two counters here: |
| 252 | ** - number of SCSI commands completed |
| 253 | ** - number of io_us completed |
| 254 | ** |
| 255 | ** These are the same with reads and writes, but |
| 256 | ** could differ with trim/unmap commands because |
| 257 | ** a single unmap can include multiple io_us |
| 258 | */ |
| 259 | |
| 260 | while (left > 0) { |
| 261 | char *p; |
| 262 | |
| 263 | dprint(FD_IO, "sgio_getevents: sd %p: min=%d, max=%d, left=%d\n", sd, min, max, left); |
| 264 | |
| 265 | do { |
| 266 | if (!min) |
| 267 | break; |
| 268 | |
| 269 | ret = poll(sd->pfds, td->o.nr_files, -1); |
| 270 | if (ret < 0) { |
| 271 | if (!r) |
| 272 | r = -errno; |
| 273 | td_verror(td, errno, "poll"); |
| 274 | break; |
| 275 | } else if (!ret) |
| 276 | continue; |
| 277 | |
| 278 | if (pollin_events(sd->pfds, td->o.nr_files)) |
| 279 | break; |
| 280 | } while (1); |
| 281 | |
| 282 | if (r < 0) |
| 283 | break; |
| 284 | |
| 285 | re_read: |
| 286 | p = buf; |
| 287 | events = 0; |
| 288 | for_each_file(td, f, i) { |
| 289 | for (eventNum = 0; eventNum < left; eventNum++) { |
| 290 | ret = sg_fd_read(f->fd, p, sizeof(struct sg_io_hdr)); |
| 291 | dprint(FD_IO, "sgio_getevents: sg_fd_read ret: %d\n", ret); |
| 292 | if (ret) { |
| 293 | r = -ret; |
| 294 | td_verror(td, r, "sg_read"); |
| 295 | break; |
| 296 | } |
| 297 | io_u = ((struct sg_io_hdr *)p)->usr_ptr; |
| 298 | if (io_u->ddir == DDIR_TRIM) { |
| 299 | events += sd->trim_queues[io_u->index]->unmap_range_count; |
| 300 | eventNum += sd->trim_queues[io_u->index]->unmap_range_count - 1; |
| 301 | } else |
| 302 | events++; |
| 303 | |
| 304 | p += sizeof(struct sg_io_hdr); |
| 305 | dprint(FD_IO, "sgio_getevents: events: %d, eventNum: %d, left: %d\n", events, eventNum, left); |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | if (r < 0 && !events) |
| 310 | break; |
| 311 | if (!events) { |
| 312 | usleep(1000); |
| 313 | goto re_read; |
| 314 | } |
| 315 | |
| 316 | left -= events; |
| 317 | r += events; |
| 318 | |
| 319 | for (i = 0; i < events; i++) { |
| 320 | struct sg_io_hdr *hdr = (struct sg_io_hdr *) buf + i; |
| 321 | sd->events[i + trims] = hdr->usr_ptr; |
| 322 | io_u = (struct io_u *)(hdr->usr_ptr); |
| 323 | |
| 324 | if (hdr->info & SG_INFO_CHECK) { |
| 325 | /* record if an io error occurred, ignore resid */ |
| 326 | memcpy(&io_u->hdr, hdr, sizeof(struct sg_io_hdr)); |
| 327 | sd->events[i + trims]->error = EIO; |
| 328 | } |
| 329 | |
| 330 | if (io_u->ddir == DDIR_TRIM) { |
| 331 | struct sgio_trim *st = sd->trim_queues[io_u->index]; |
| 332 | assert(st->trim_io_us[0] == io_u); |
| 333 | dprint(FD_IO, "sgio_getevents: reaping %d io_us from trim queue %d\n", st->unmap_range_count, io_u->index); |
| 334 | dprint(FD_IO, "sgio_getevents: reaped io_u %d and stored in events[%d]\n", io_u->index, i+trims); |
| 335 | for (j = 1; j < st->unmap_range_count; j++) { |
| 336 | ++trims; |
| 337 | sd->events[i + trims] = st->trim_io_us[j]; |
| 338 | dprint(FD_IO, "sgio_getevents: reaped io_u %d and stored in events[%d]\n", st->trim_io_us[j]->index, i+trims); |
| 339 | if (hdr->info & SG_INFO_CHECK) { |
| 340 | /* record if an io error occurred, ignore resid */ |
| 341 | memcpy(&st->trim_io_us[j]->hdr, hdr, sizeof(struct sg_io_hdr)); |
| 342 | sd->events[i + trims]->error = EIO; |
| 343 | } |
| 344 | } |
| 345 | events -= st->unmap_range_count - 1; |
| 346 | st->unmap_range_count = 0; |
| 347 | } |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | if (!min) { |
| 352 | for_each_file(td, f, i) { |
| 353 | if (sd->fd_flags[i] == -1) |
| 354 | continue; |
| 355 | |
| 356 | if (fcntl(f->fd, F_SETFL, sd->fd_flags[i]) < 0) |
| 357 | log_err("fio: sg failed to restore fcntl flags: %s\n", strerror(errno)); |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | return r; |
| 362 | } |
| 363 | |
| 364 | static enum fio_q_status fio_sgio_ioctl_doio(struct thread_data *td, |
| 365 | struct fio_file *f, |
| 366 | struct io_u *io_u) |
| 367 | { |
| 368 | struct sgio_data *sd = td->io_ops_data; |
| 369 | struct sg_io_hdr *hdr = &io_u->hdr; |
| 370 | int ret; |
| 371 | |
| 372 | sd->events[0] = io_u; |
| 373 | |
| 374 | ret = ioctl(f->fd, SG_IO, hdr); |
| 375 | if (ret < 0) |
| 376 | return ret; |
| 377 | |
| 378 | /* record if an io error occurred */ |
| 379 | if (hdr->info & SG_INFO_CHECK) |
| 380 | io_u->error = EIO; |
| 381 | |
| 382 | return FIO_Q_COMPLETED; |
| 383 | } |
| 384 | |
| 385 | static enum fio_q_status fio_sgio_rw_doio(struct fio_file *f, |
| 386 | struct io_u *io_u, int do_sync) |
| 387 | { |
| 388 | struct sg_io_hdr *hdr = &io_u->hdr; |
| 389 | int ret; |
| 390 | |
| 391 | ret = write(f->fd, hdr, sizeof(*hdr)); |
| 392 | if (ret < 0) |
| 393 | return ret; |
| 394 | |
| 395 | if (do_sync) { |
| 396 | ret = read(f->fd, hdr, sizeof(*hdr)); |
| 397 | if (ret < 0) |
| 398 | return ret; |
| 399 | |
| 400 | /* record if an io error occurred */ |
| 401 | if (hdr->info & SG_INFO_CHECK) |
| 402 | io_u->error = EIO; |
| 403 | |
| 404 | return FIO_Q_COMPLETED; |
| 405 | } |
| 406 | |
| 407 | return FIO_Q_QUEUED; |
| 408 | } |
| 409 | |
| 410 | static enum fio_q_status fio_sgio_doio(struct thread_data *td, |
| 411 | struct io_u *io_u, int do_sync) |
| 412 | { |
| 413 | struct fio_file *f = io_u->file; |
| 414 | enum fio_q_status ret; |
| 415 | |
| 416 | if (f->filetype == FIO_TYPE_BLOCK) { |
| 417 | ret = fio_sgio_ioctl_doio(td, f, io_u); |
| 418 | td_verror(td, io_u->error, __func__); |
| 419 | } else { |
| 420 | ret = fio_sgio_rw_doio(f, io_u, do_sync); |
| 421 | if (do_sync) |
| 422 | td_verror(td, io_u->error, __func__); |
| 423 | } |
| 424 | |
| 425 | return ret; |
| 426 | } |
| 427 | |
| 428 | static void fio_sgio_rw_lba(struct sg_io_hdr *hdr, unsigned long long lba, |
| 429 | unsigned long long nr_blocks) |
| 430 | { |
| 431 | if (lba < MAX_10B_LBA) { |
| 432 | hdr->cmdp[2] = (unsigned char) ((lba >> 24) & 0xff); |
| 433 | hdr->cmdp[3] = (unsigned char) ((lba >> 16) & 0xff); |
| 434 | hdr->cmdp[4] = (unsigned char) ((lba >> 8) & 0xff); |
| 435 | hdr->cmdp[5] = (unsigned char) (lba & 0xff); |
| 436 | hdr->cmdp[7] = (unsigned char) ((nr_blocks >> 8) & 0xff); |
| 437 | hdr->cmdp[8] = (unsigned char) (nr_blocks & 0xff); |
| 438 | } else { |
| 439 | hdr->cmdp[2] = (unsigned char) ((lba >> 56) & 0xff); |
| 440 | hdr->cmdp[3] = (unsigned char) ((lba >> 48) & 0xff); |
| 441 | hdr->cmdp[4] = (unsigned char) ((lba >> 40) & 0xff); |
| 442 | hdr->cmdp[5] = (unsigned char) ((lba >> 32) & 0xff); |
| 443 | hdr->cmdp[6] = (unsigned char) ((lba >> 24) & 0xff); |
| 444 | hdr->cmdp[7] = (unsigned char) ((lba >> 16) & 0xff); |
| 445 | hdr->cmdp[8] = (unsigned char) ((lba >> 8) & 0xff); |
| 446 | hdr->cmdp[9] = (unsigned char) (lba & 0xff); |
| 447 | hdr->cmdp[10] = (unsigned char) ((nr_blocks >> 32) & 0xff); |
| 448 | hdr->cmdp[11] = (unsigned char) ((nr_blocks >> 16) & 0xff); |
| 449 | hdr->cmdp[12] = (unsigned char) ((nr_blocks >> 8) & 0xff); |
| 450 | hdr->cmdp[13] = (unsigned char) (nr_blocks & 0xff); |
| 451 | } |
| 452 | |
| 453 | return; |
| 454 | } |
| 455 | |
| 456 | static int fio_sgio_prep(struct thread_data *td, struct io_u *io_u) |
| 457 | { |
| 458 | struct sg_io_hdr *hdr = &io_u->hdr; |
| 459 | struct sg_options *o = td->eo; |
| 460 | struct sgio_data *sd = td->io_ops_data; |
| 461 | unsigned long long nr_blocks, lba; |
| 462 | int offset; |
| 463 | |
| 464 | if (io_u->xfer_buflen & (sd->bs - 1)) { |
| 465 | log_err("read/write not sector aligned\n"); |
| 466 | return EINVAL; |
| 467 | } |
| 468 | |
| 469 | nr_blocks = io_u->xfer_buflen / sd->bs; |
| 470 | lba = io_u->offset / sd->bs; |
| 471 | |
| 472 | if (io_u->ddir == DDIR_READ) { |
| 473 | sgio_hdr_init(sd, hdr, io_u, 1); |
| 474 | |
| 475 | hdr->dxfer_direction = SG_DXFER_FROM_DEV; |
| 476 | if (lba < MAX_10B_LBA) |
| 477 | hdr->cmdp[0] = 0x28; // read(10) |
| 478 | else |
| 479 | hdr->cmdp[0] = 0x88; // read(16) |
| 480 | |
| 481 | if (o->readfua) |
| 482 | hdr->cmdp[1] |= 0x08; |
| 483 | |
| 484 | fio_sgio_rw_lba(hdr, lba, nr_blocks); |
| 485 | |
| 486 | } else if (io_u->ddir == DDIR_WRITE) { |
| 487 | sgio_hdr_init(sd, hdr, io_u, 1); |
| 488 | |
| 489 | hdr->dxfer_direction = SG_DXFER_TO_DEV; |
| 490 | switch(o->write_mode) { |
| 491 | case FIO_SG_WRITE: |
| 492 | if (lba < MAX_10B_LBA) |
| 493 | hdr->cmdp[0] = 0x2a; // write(10) |
| 494 | else |
| 495 | hdr->cmdp[0] = 0x8a; // write(16) |
| 496 | if (o->writefua) |
| 497 | hdr->cmdp[1] |= 0x08; |
| 498 | break; |
| 499 | case FIO_SG_WRITE_VERIFY: |
| 500 | if (lba < MAX_10B_LBA) |
| 501 | hdr->cmdp[0] = 0x2e; // write and verify(10) |
| 502 | else |
| 503 | hdr->cmdp[0] = 0x8e; // write and verify(16) |
| 504 | break; |
| 505 | // BYTCHK is disabled by virtue of the memset in sgio_hdr_init |
| 506 | case FIO_SG_WRITE_SAME: |
| 507 | hdr->dxfer_len = sd->bs; |
| 508 | if (lba < MAX_10B_LBA) |
| 509 | hdr->cmdp[0] = 0x41; // write same(10) |
| 510 | else |
| 511 | hdr->cmdp[0] = 0x93; // write same(16) |
| 512 | break; |
| 513 | }; |
| 514 | |
| 515 | fio_sgio_rw_lba(hdr, lba, nr_blocks); |
| 516 | |
| 517 | } else if (io_u->ddir == DDIR_TRIM) { |
| 518 | struct sgio_trim *st; |
| 519 | |
| 520 | if (sd->current_queue == -1) { |
| 521 | sgio_hdr_init(sd, hdr, io_u, 0); |
| 522 | |
| 523 | hdr->cmd_len = 10; |
| 524 | hdr->dxfer_direction = SG_DXFER_TO_DEV; |
| 525 | hdr->cmdp[0] = 0x42; // unmap |
| 526 | sd->current_queue = io_u->index; |
| 527 | st = sd->trim_queues[sd->current_queue]; |
| 528 | hdr->dxferp = st->unmap_param; |
| 529 | assert(sd->trim_queues[io_u->index]->unmap_range_count == 0); |
| 530 | dprint(FD_IO, "sg: creating new queue based on io_u %d\n", io_u->index); |
| 531 | } |
| 532 | else |
| 533 | st = sd->trim_queues[sd->current_queue]; |
| 534 | |
| 535 | dprint(FD_IO, "sg: adding io_u %d to trim queue %d\n", io_u->index, sd->current_queue); |
| 536 | st->trim_io_us[st->unmap_range_count] = io_u; |
| 537 | sd->trim_queue_map[io_u->index] = sd->current_queue; |
| 538 | |
| 539 | offset = 8 + 16 * st->unmap_range_count; |
| 540 | st->unmap_param[offset] = (unsigned char) ((lba >> 56) & 0xff); |
| 541 | st->unmap_param[offset+1] = (unsigned char) ((lba >> 48) & 0xff); |
| 542 | st->unmap_param[offset+2] = (unsigned char) ((lba >> 40) & 0xff); |
| 543 | st->unmap_param[offset+3] = (unsigned char) ((lba >> 32) & 0xff); |
| 544 | st->unmap_param[offset+4] = (unsigned char) ((lba >> 24) & 0xff); |
| 545 | st->unmap_param[offset+5] = (unsigned char) ((lba >> 16) & 0xff); |
| 546 | st->unmap_param[offset+6] = (unsigned char) ((lba >> 8) & 0xff); |
| 547 | st->unmap_param[offset+7] = (unsigned char) (lba & 0xff); |
| 548 | st->unmap_param[offset+8] = (unsigned char) ((nr_blocks >> 32) & 0xff); |
| 549 | st->unmap_param[offset+9] = (unsigned char) ((nr_blocks >> 16) & 0xff); |
| 550 | st->unmap_param[offset+10] = (unsigned char) ((nr_blocks >> 8) & 0xff); |
| 551 | st->unmap_param[offset+11] = (unsigned char) (nr_blocks & 0xff); |
| 552 | |
| 553 | st->unmap_range_count++; |
| 554 | |
| 555 | } else if (ddir_sync(io_u->ddir)) { |
| 556 | sgio_hdr_init(sd, hdr, io_u, 0); |
| 557 | hdr->dxfer_direction = SG_DXFER_NONE; |
| 558 | if (lba < MAX_10B_LBA) |
| 559 | hdr->cmdp[0] = 0x35; // synccache(10) |
| 560 | else |
| 561 | hdr->cmdp[0] = 0x91; // synccache(16) |
| 562 | } else |
| 563 | assert(0); |
| 564 | |
| 565 | return 0; |
| 566 | } |
| 567 | |
| 568 | static void fio_sgio_unmap_setup(struct sg_io_hdr *hdr, struct sgio_trim *st) |
| 569 | { |
| 570 | hdr->dxfer_len = st->unmap_range_count * 16 + 8; |
| 571 | hdr->cmdp[7] = (unsigned char) (((st->unmap_range_count * 16 + 8) >> 8) & 0xff); |
| 572 | hdr->cmdp[8] = (unsigned char) ((st->unmap_range_count * 16 + 8) & 0xff); |
| 573 | |
| 574 | st->unmap_param[0] = (unsigned char) (((16 * st->unmap_range_count + 6) >> 8) & 0xff); |
| 575 | st->unmap_param[1] = (unsigned char) ((16 * st->unmap_range_count + 6) & 0xff); |
| 576 | st->unmap_param[2] = (unsigned char) (((16 * st->unmap_range_count) >> 8) & 0xff); |
| 577 | st->unmap_param[3] = (unsigned char) ((16 * st->unmap_range_count) & 0xff); |
| 578 | |
| 579 | return; |
| 580 | } |
| 581 | |
| 582 | static enum fio_q_status fio_sgio_queue(struct thread_data *td, |
| 583 | struct io_u *io_u) |
| 584 | { |
| 585 | struct sg_io_hdr *hdr = &io_u->hdr; |
| 586 | struct sgio_data *sd = td->io_ops_data; |
| 587 | int ret, do_sync = 0; |
| 588 | |
| 589 | fio_ro_check(td, io_u); |
| 590 | |
| 591 | if (sgio_unbuffered(td) || ddir_sync(io_u->ddir)) |
| 592 | do_sync = 1; |
| 593 | |
| 594 | if (io_u->ddir == DDIR_TRIM) { |
| 595 | if (do_sync || io_u->file->filetype == FIO_TYPE_BLOCK) { |
| 596 | struct sgio_trim *st = sd->trim_queues[sd->current_queue]; |
| 597 | |
| 598 | /* finish cdb setup for unmap because we are |
| 599 | ** doing unmap commands synchronously */ |
| 600 | assert(st->unmap_range_count == 1); |
| 601 | assert(io_u == st->trim_io_us[0]); |
| 602 | hdr = &io_u->hdr; |
| 603 | |
| 604 | fio_sgio_unmap_setup(hdr, st); |
| 605 | |
| 606 | st->unmap_range_count = 0; |
| 607 | sd->current_queue = -1; |
| 608 | } else |
| 609 | /* queue up trim ranges and submit in commit() */ |
| 610 | return FIO_Q_QUEUED; |
| 611 | } |
| 612 | |
| 613 | ret = fio_sgio_doio(td, io_u, do_sync); |
| 614 | |
| 615 | if (ret < 0) |
| 616 | io_u->error = errno; |
| 617 | else if (hdr->status) { |
| 618 | io_u->resid = hdr->resid; |
| 619 | io_u->error = EIO; |
| 620 | } else if (td->io_ops->commit != NULL) { |
| 621 | if (do_sync && !ddir_sync(io_u->ddir)) { |
| 622 | io_u_mark_submit(td, 1); |
| 623 | io_u_mark_complete(td, 1); |
| 624 | } else if (io_u->ddir == DDIR_READ || io_u->ddir == DDIR_WRITE) { |
| 625 | io_u_mark_submit(td, 1); |
| 626 | io_u_queued(td, io_u); |
| 627 | } |
| 628 | } |
| 629 | |
| 630 | if (io_u->error) { |
| 631 | td_verror(td, io_u->error, "xfer"); |
| 632 | return FIO_Q_COMPLETED; |
| 633 | } |
| 634 | |
| 635 | return ret; |
| 636 | } |
| 637 | |
| 638 | static int fio_sgio_commit(struct thread_data *td) |
| 639 | { |
| 640 | struct sgio_data *sd = td->io_ops_data; |
| 641 | struct sgio_trim *st; |
| 642 | struct io_u *io_u; |
| 643 | struct sg_io_hdr *hdr; |
| 644 | struct timespec now; |
| 645 | unsigned int i; |
| 646 | int ret; |
| 647 | |
| 648 | if (sd->current_queue == -1) |
| 649 | return 0; |
| 650 | |
| 651 | st = sd->trim_queues[sd->current_queue]; |
| 652 | io_u = st->trim_io_us[0]; |
| 653 | hdr = &io_u->hdr; |
| 654 | |
| 655 | fio_sgio_unmap_setup(hdr, st); |
| 656 | |
| 657 | sd->current_queue = -1; |
| 658 | |
| 659 | ret = fio_sgio_rw_doio(io_u->file, io_u, 0); |
| 660 | |
| 661 | if (ret < 0) |
| 662 | for (i = 0; i < st->unmap_range_count; i++) |
| 663 | st->trim_io_us[i]->error = errno; |
| 664 | else if (hdr->status) |
| 665 | for (i = 0; i < st->unmap_range_count; i++) { |
| 666 | st->trim_io_us[i]->resid = hdr->resid; |
| 667 | st->trim_io_us[i]->error = EIO; |
| 668 | } |
| 669 | else { |
| 670 | if (fio_fill_issue_time(td)) { |
| 671 | fio_gettime(&now, NULL); |
| 672 | for (i = 0; i < st->unmap_range_count; i++) { |
| 673 | struct io_u *io_u = st->trim_io_us[i]; |
| 674 | |
| 675 | memcpy(&io_u->issue_time, &now, sizeof(now)); |
| 676 | io_u_queued(td, io_u); |
| 677 | } |
| 678 | } |
| 679 | io_u_mark_submit(td, st->unmap_range_count); |
| 680 | } |
| 681 | |
| 682 | if (io_u->error) { |
| 683 | td_verror(td, io_u->error, "xfer"); |
| 684 | return 0; |
| 685 | } |
| 686 | |
| 687 | if (ret == FIO_Q_QUEUED) |
| 688 | return 0; |
| 689 | else |
| 690 | return ret; |
| 691 | } |
| 692 | |
| 693 | static struct io_u *fio_sgio_event(struct thread_data *td, int event) |
| 694 | { |
| 695 | struct sgio_data *sd = td->io_ops_data; |
| 696 | |
| 697 | return sd->events[event]; |
| 698 | } |
| 699 | |
| 700 | static int fio_sgio_read_capacity(struct thread_data *td, unsigned int *bs, |
| 701 | unsigned long long *max_lba) |
| 702 | { |
| 703 | /* |
| 704 | * need to do read capacity operation w/o benefit of sd or |
| 705 | * io_u structures, which are not initialized until later. |
| 706 | */ |
| 707 | struct sg_io_hdr hdr; |
| 708 | unsigned char cmd[16]; |
| 709 | unsigned char sb[64]; |
| 710 | unsigned char buf[32]; // read capacity return |
| 711 | int ret; |
| 712 | int fd = -1; |
| 713 | |
| 714 | struct fio_file *f = td->files[0]; |
| 715 | |
| 716 | /* open file independent of rest of application */ |
| 717 | fd = open(f->file_name, O_RDONLY); |
| 718 | if (fd < 0) |
| 719 | return -errno; |
| 720 | |
| 721 | memset(&hdr, 0, sizeof(hdr)); |
| 722 | memset(cmd, 0, sizeof(cmd)); |
| 723 | memset(sb, 0, sizeof(sb)); |
| 724 | memset(buf, 0, sizeof(buf)); |
| 725 | |
| 726 | /* First let's try a 10 byte read capacity. */ |
| 727 | hdr.interface_id = 'S'; |
| 728 | hdr.cmdp = cmd; |
| 729 | hdr.cmd_len = 10; |
| 730 | hdr.sbp = sb; |
| 731 | hdr.mx_sb_len = sizeof(sb); |
| 732 | hdr.timeout = SCSI_TIMEOUT_MS; |
| 733 | hdr.cmdp[0] = 0x25; // Read Capacity(10) |
| 734 | hdr.dxfer_direction = SG_DXFER_FROM_DEV; |
| 735 | hdr.dxferp = buf; |
| 736 | hdr.dxfer_len = sizeof(buf); |
| 737 | |
| 738 | ret = ioctl(fd, SG_IO, &hdr); |
| 739 | if (ret < 0) { |
| 740 | close(fd); |
| 741 | return ret; |
| 742 | } |
| 743 | |
| 744 | *bs = ((unsigned long) buf[4] << 24) | ((unsigned long) buf[5] << 16) | |
| 745 | ((unsigned long) buf[6] << 8) | (unsigned long) buf[7]; |
| 746 | *max_lba = ((unsigned long) buf[0] << 24) | ((unsigned long) buf[1] << 16) | |
| 747 | ((unsigned long) buf[2] << 8) | (unsigned long) buf[3]; |
| 748 | |
| 749 | /* |
| 750 | * If max lba masked by MAX_10B_LBA equals MAX_10B_LBA, |
| 751 | * then need to retry with 16 byte Read Capacity command. |
| 752 | */ |
| 753 | if (*max_lba == MAX_10B_LBA) { |
| 754 | hdr.cmd_len = 16; |
| 755 | hdr.cmdp[0] = 0x9e; // service action |
| 756 | hdr.cmdp[1] = 0x10; // Read Capacity(16) |
| 757 | hdr.cmdp[10] = (unsigned char) ((sizeof(buf) >> 24) & 0xff); |
| 758 | hdr.cmdp[11] = (unsigned char) ((sizeof(buf) >> 16) & 0xff); |
| 759 | hdr.cmdp[12] = (unsigned char) ((sizeof(buf) >> 8) & 0xff); |
| 760 | hdr.cmdp[13] = (unsigned char) (sizeof(buf) & 0xff); |
| 761 | |
| 762 | hdr.dxfer_direction = SG_DXFER_FROM_DEV; |
| 763 | hdr.dxferp = buf; |
| 764 | hdr.dxfer_len = sizeof(buf); |
| 765 | |
| 766 | ret = ioctl(fd, SG_IO, &hdr); |
| 767 | if (ret < 0) { |
| 768 | close(fd); |
| 769 | return ret; |
| 770 | } |
| 771 | |
| 772 | /* record if an io error occurred */ |
| 773 | if (hdr.info & SG_INFO_CHECK) |
| 774 | td_verror(td, EIO, "fio_sgio_read_capacity"); |
| 775 | |
| 776 | *bs = (buf[8] << 24) | (buf[9] << 16) | (buf[10] << 8) | buf[11]; |
| 777 | *max_lba = ((unsigned long long)buf[0] << 56) | |
| 778 | ((unsigned long long)buf[1] << 48) | |
| 779 | ((unsigned long long)buf[2] << 40) | |
| 780 | ((unsigned long long)buf[3] << 32) | |
| 781 | ((unsigned long long)buf[4] << 24) | |
| 782 | ((unsigned long long)buf[5] << 16) | |
| 783 | ((unsigned long long)buf[6] << 8) | |
| 784 | (unsigned long long)buf[7]; |
| 785 | } |
| 786 | |
| 787 | close(fd); |
| 788 | return 0; |
| 789 | } |
| 790 | |
| 791 | static void fio_sgio_cleanup(struct thread_data *td) |
| 792 | { |
| 793 | struct sgio_data *sd = td->io_ops_data; |
| 794 | int i; |
| 795 | |
| 796 | if (sd) { |
| 797 | free(sd->events); |
| 798 | free(sd->cmds); |
| 799 | free(sd->fd_flags); |
| 800 | free(sd->pfds); |
| 801 | free(sd->sgbuf); |
| 802 | free(sd->trim_queue_map); |
| 803 | |
| 804 | for (i = 0; i < td->o.iodepth; i++) { |
| 805 | free(sd->trim_queues[i]->unmap_param); |
| 806 | free(sd->trim_queues[i]->trim_io_us); |
| 807 | free(sd->trim_queues[i]); |
| 808 | } |
| 809 | |
| 810 | free(sd->trim_queues); |
| 811 | free(sd); |
| 812 | } |
| 813 | } |
| 814 | |
| 815 | static int fio_sgio_init(struct thread_data *td) |
| 816 | { |
| 817 | struct sgio_data *sd; |
| 818 | struct sgio_trim *st; |
| 819 | int i; |
| 820 | |
| 821 | sd = calloc(1, sizeof(*sd)); |
| 822 | sd->cmds = calloc(td->o.iodepth, sizeof(struct sgio_cmd)); |
| 823 | sd->sgbuf = calloc(td->o.iodepth, sizeof(struct sg_io_hdr)); |
| 824 | sd->events = calloc(td->o.iodepth, sizeof(struct io_u *)); |
| 825 | sd->pfds = calloc(td->o.nr_files, sizeof(struct pollfd)); |
| 826 | sd->fd_flags = calloc(td->o.nr_files, sizeof(int)); |
| 827 | sd->type_checked = 0; |
| 828 | |
| 829 | sd->trim_queues = calloc(td->o.iodepth, sizeof(struct sgio_trim *)); |
| 830 | sd->current_queue = -1; |
| 831 | sd->trim_queue_map = calloc(td->o.iodepth, sizeof(int)); |
| 832 | for (i = 0; i < td->o.iodepth; i++) { |
| 833 | sd->trim_queues[i] = calloc(1, sizeof(struct sgio_trim)); |
| 834 | st = sd->trim_queues[i]; |
| 835 | st->unmap_param = calloc(td->o.iodepth + 1, sizeof(char[16])); |
| 836 | st->unmap_range_count = 0; |
| 837 | st->trim_io_us = calloc(td->o.iodepth, sizeof(struct io_u *)); |
| 838 | } |
| 839 | |
| 840 | td->io_ops_data = sd; |
| 841 | |
| 842 | /* |
| 843 | * we want to do it, regardless of whether odirect is set or not |
| 844 | */ |
| 845 | td->o.override_sync = 1; |
| 846 | return 0; |
| 847 | } |
| 848 | |
| 849 | static int fio_sgio_type_check(struct thread_data *td, struct fio_file *f) |
| 850 | { |
| 851 | struct sgio_data *sd = td->io_ops_data; |
| 852 | unsigned int bs = 0; |
| 853 | unsigned long long max_lba = 0; |
| 854 | |
| 855 | if (f->filetype == FIO_TYPE_BLOCK) { |
| 856 | if (ioctl(f->fd, BLKSSZGET, &bs) < 0) { |
| 857 | td_verror(td, errno, "ioctl"); |
| 858 | return 1; |
| 859 | } |
| 860 | } else if (f->filetype == FIO_TYPE_CHAR) { |
| 861 | int version, ret; |
| 862 | |
| 863 | if (ioctl(f->fd, SG_GET_VERSION_NUM, &version) < 0) { |
| 864 | td_verror(td, errno, "ioctl"); |
| 865 | return 1; |
| 866 | } |
| 867 | |
| 868 | ret = fio_sgio_read_capacity(td, &bs, &max_lba); |
| 869 | if (ret) { |
| 870 | td_verror(td, td->error, "fio_sgio_read_capacity"); |
| 871 | log_err("ioengine sg unable to read capacity successfully\n"); |
| 872 | return 1; |
| 873 | } |
| 874 | } else { |
| 875 | td_verror(td, EINVAL, "wrong file type"); |
| 876 | log_err("ioengine sg only works on block or character devices\n"); |
| 877 | return 1; |
| 878 | } |
| 879 | |
| 880 | sd->bs = bs; |
| 881 | // Determine size of commands needed based on max_lba |
| 882 | if (max_lba >= MAX_10B_LBA) { |
| 883 | dprint(FD_IO, "sgio_type_check: using 16 byte read/write " |
| 884 | "commands for lba above 0x%016llx/0x%016llx\n", |
| 885 | MAX_10B_LBA, max_lba); |
| 886 | } |
| 887 | |
| 888 | if (f->filetype == FIO_TYPE_BLOCK) { |
| 889 | td->io_ops->getevents = NULL; |
| 890 | td->io_ops->event = NULL; |
| 891 | td->io_ops->commit = NULL; |
| 892 | /* |
| 893 | ** Setting these functions to null may cause problems |
| 894 | ** with filename=/dev/sda:/dev/sg0 since we are only |
| 895 | ** considering a single file |
| 896 | */ |
| 897 | } |
| 898 | sd->type_checked = 1; |
| 899 | |
| 900 | return 0; |
| 901 | } |
| 902 | |
| 903 | static int fio_sgio_open(struct thread_data *td, struct fio_file *f) |
| 904 | { |
| 905 | struct sgio_data *sd = td->io_ops_data; |
| 906 | int ret; |
| 907 | |
| 908 | ret = generic_open_file(td, f); |
| 909 | if (ret) |
| 910 | return ret; |
| 911 | |
| 912 | if (sd && !sd->type_checked && fio_sgio_type_check(td, f)) { |
| 913 | ret = generic_close_file(td, f); |
| 914 | return 1; |
| 915 | } |
| 916 | |
| 917 | return 0; |
| 918 | } |
| 919 | |
| 920 | /* |
| 921 | * Build an error string with details about the driver, host or scsi |
| 922 | * error contained in the sg header Caller will use as necessary. |
| 923 | */ |
| 924 | static char *fio_sgio_errdetails(struct io_u *io_u) |
| 925 | { |
| 926 | struct sg_io_hdr *hdr = &io_u->hdr; |
| 927 | #define MAXERRDETAIL 1024 |
| 928 | #define MAXMSGCHUNK 128 |
| 929 | char *msg, msgchunk[MAXMSGCHUNK]; |
| 930 | int i; |
| 931 | |
| 932 | msg = calloc(1, MAXERRDETAIL); |
| 933 | strcpy(msg, ""); |
| 934 | |
| 935 | /* |
| 936 | * can't seem to find sg_err.h, so I'll just echo the define values |
| 937 | * so others can search on internet to find clearer clues of meaning. |
| 938 | */ |
| 939 | if (hdr->info & SG_INFO_CHECK) { |
| 940 | if (hdr->host_status) { |
| 941 | snprintf(msgchunk, MAXMSGCHUNK, "SG Host Status: 0x%02x; ", hdr->host_status); |
| 942 | strlcat(msg, msgchunk, MAXERRDETAIL); |
| 943 | switch (hdr->host_status) { |
| 944 | case 0x01: |
| 945 | strlcat(msg, "SG_ERR_DID_NO_CONNECT", MAXERRDETAIL); |
| 946 | break; |
| 947 | case 0x02: |
| 948 | strlcat(msg, "SG_ERR_DID_BUS_BUSY", MAXERRDETAIL); |
| 949 | break; |
| 950 | case 0x03: |
| 951 | strlcat(msg, "SG_ERR_DID_TIME_OUT", MAXERRDETAIL); |
| 952 | break; |
| 953 | case 0x04: |
| 954 | strlcat(msg, "SG_ERR_DID_BAD_TARGET", MAXERRDETAIL); |
| 955 | break; |
| 956 | case 0x05: |
| 957 | strlcat(msg, "SG_ERR_DID_ABORT", MAXERRDETAIL); |
| 958 | break; |
| 959 | case 0x06: |
| 960 | strlcat(msg, "SG_ERR_DID_PARITY", MAXERRDETAIL); |
| 961 | break; |
| 962 | case 0x07: |
| 963 | strlcat(msg, "SG_ERR_DID_ERROR (internal error)", MAXERRDETAIL); |
| 964 | break; |
| 965 | case 0x08: |
| 966 | strlcat(msg, "SG_ERR_DID_RESET", MAXERRDETAIL); |
| 967 | break; |
| 968 | case 0x09: |
| 969 | strlcat(msg, "SG_ERR_DID_BAD_INTR (unexpected)", MAXERRDETAIL); |
| 970 | break; |
| 971 | case 0x0a: |
| 972 | strlcat(msg, "SG_ERR_DID_PASSTHROUGH", MAXERRDETAIL); |
| 973 | break; |
| 974 | case 0x0b: |
| 975 | strlcat(msg, "SG_ERR_DID_SOFT_ERROR (driver retry?)", MAXERRDETAIL); |
| 976 | break; |
| 977 | case 0x0c: |
| 978 | strlcat(msg, "SG_ERR_DID_IMM_RETRY", MAXERRDETAIL); |
| 979 | break; |
| 980 | case 0x0d: |
| 981 | strlcat(msg, "SG_ERR_DID_REQUEUE", MAXERRDETAIL); |
| 982 | break; |
| 983 | case 0x0e: |
| 984 | strlcat(msg, "SG_ERR_DID_TRANSPORT_DISRUPTED", MAXERRDETAIL); |
| 985 | break; |
| 986 | case 0x0f: |
| 987 | strlcat(msg, "SG_ERR_DID_TRANSPORT_FAILFAST", MAXERRDETAIL); |
| 988 | break; |
| 989 | case 0x10: |
| 990 | strlcat(msg, "SG_ERR_DID_TARGET_FAILURE", MAXERRDETAIL); |
| 991 | break; |
| 992 | case 0x11: |
| 993 | strlcat(msg, "SG_ERR_DID_NEXUS_FAILURE", MAXERRDETAIL); |
| 994 | break; |
| 995 | case 0x12: |
| 996 | strlcat(msg, "SG_ERR_DID_ALLOC_FAILURE", MAXERRDETAIL); |
| 997 | break; |
| 998 | case 0x13: |
| 999 | strlcat(msg, "SG_ERR_DID_MEDIUM_ERROR", MAXERRDETAIL); |
| 1000 | break; |
| 1001 | default: |
| 1002 | strlcat(msg, "Unknown", MAXERRDETAIL); |
| 1003 | break; |
| 1004 | } |
| 1005 | strlcat(msg, ". ", MAXERRDETAIL); |
| 1006 | } |
| 1007 | if (hdr->driver_status) { |
| 1008 | snprintf(msgchunk, MAXMSGCHUNK, "SG Driver Status: 0x%02x; ", hdr->driver_status); |
| 1009 | strlcat(msg, msgchunk, MAXERRDETAIL); |
| 1010 | switch (hdr->driver_status & 0x0F) { |
| 1011 | case 0x01: |
| 1012 | strlcat(msg, "SG_ERR_DRIVER_BUSY", MAXERRDETAIL); |
| 1013 | break; |
| 1014 | case 0x02: |
| 1015 | strlcat(msg, "SG_ERR_DRIVER_SOFT", MAXERRDETAIL); |
| 1016 | break; |
| 1017 | case 0x03: |
| 1018 | strlcat(msg, "SG_ERR_DRIVER_MEDIA", MAXERRDETAIL); |
| 1019 | break; |
| 1020 | case 0x04: |
| 1021 | strlcat(msg, "SG_ERR_DRIVER_ERROR", MAXERRDETAIL); |
| 1022 | break; |
| 1023 | case 0x05: |
| 1024 | strlcat(msg, "SG_ERR_DRIVER_INVALID", MAXERRDETAIL); |
| 1025 | break; |
| 1026 | case 0x06: |
| 1027 | strlcat(msg, "SG_ERR_DRIVER_TIMEOUT", MAXERRDETAIL); |
| 1028 | break; |
| 1029 | case 0x07: |
| 1030 | strlcat(msg, "SG_ERR_DRIVER_HARD", MAXERRDETAIL); |
| 1031 | break; |
| 1032 | case 0x08: |
| 1033 | strlcat(msg, "SG_ERR_DRIVER_SENSE", MAXERRDETAIL); |
| 1034 | break; |
| 1035 | default: |
| 1036 | strlcat(msg, "Unknown", MAXERRDETAIL); |
| 1037 | break; |
| 1038 | } |
| 1039 | strlcat(msg, "; ", MAXERRDETAIL); |
| 1040 | switch (hdr->driver_status & 0xF0) { |
| 1041 | case 0x10: |
| 1042 | strlcat(msg, "SG_ERR_SUGGEST_RETRY", MAXERRDETAIL); |
| 1043 | break; |
| 1044 | case 0x20: |
| 1045 | strlcat(msg, "SG_ERR_SUGGEST_ABORT", MAXERRDETAIL); |
| 1046 | break; |
| 1047 | case 0x30: |
| 1048 | strlcat(msg, "SG_ERR_SUGGEST_REMAP", MAXERRDETAIL); |
| 1049 | break; |
| 1050 | case 0x40: |
| 1051 | strlcat(msg, "SG_ERR_SUGGEST_DIE", MAXERRDETAIL); |
| 1052 | break; |
| 1053 | case 0x80: |
| 1054 | strlcat(msg, "SG_ERR_SUGGEST_SENSE", MAXERRDETAIL); |
| 1055 | break; |
| 1056 | } |
| 1057 | strlcat(msg, ". ", MAXERRDETAIL); |
| 1058 | } |
| 1059 | if (hdr->status) { |
| 1060 | snprintf(msgchunk, MAXMSGCHUNK, "SG SCSI Status: 0x%02x; ", hdr->status); |
| 1061 | strlcat(msg, msgchunk, MAXERRDETAIL); |
| 1062 | // SCSI 3 status codes |
| 1063 | switch (hdr->status) { |
| 1064 | case 0x02: |
| 1065 | strlcat(msg, "CHECK_CONDITION", MAXERRDETAIL); |
| 1066 | break; |
| 1067 | case 0x04: |
| 1068 | strlcat(msg, "CONDITION_MET", MAXERRDETAIL); |
| 1069 | break; |
| 1070 | case 0x08: |
| 1071 | strlcat(msg, "BUSY", MAXERRDETAIL); |
| 1072 | break; |
| 1073 | case 0x10: |
| 1074 | strlcat(msg, "INTERMEDIATE", MAXERRDETAIL); |
| 1075 | break; |
| 1076 | case 0x14: |
| 1077 | strlcat(msg, "INTERMEDIATE_CONDITION_MET", MAXERRDETAIL); |
| 1078 | break; |
| 1079 | case 0x18: |
| 1080 | strlcat(msg, "RESERVATION_CONFLICT", MAXERRDETAIL); |
| 1081 | break; |
| 1082 | case 0x22: |
| 1083 | strlcat(msg, "COMMAND_TERMINATED", MAXERRDETAIL); |
| 1084 | break; |
| 1085 | case 0x28: |
| 1086 | strlcat(msg, "TASK_SET_FULL", MAXERRDETAIL); |
| 1087 | break; |
| 1088 | case 0x30: |
| 1089 | strlcat(msg, "ACA_ACTIVE", MAXERRDETAIL); |
| 1090 | break; |
| 1091 | case 0x40: |
| 1092 | strlcat(msg, "TASK_ABORTED", MAXERRDETAIL); |
| 1093 | break; |
| 1094 | default: |
| 1095 | strlcat(msg, "Unknown", MAXERRDETAIL); |
| 1096 | break; |
| 1097 | } |
| 1098 | strlcat(msg, ". ", MAXERRDETAIL); |
| 1099 | } |
| 1100 | if (hdr->sb_len_wr) { |
| 1101 | snprintf(msgchunk, MAXMSGCHUNK, "Sense Data (%d bytes):", hdr->sb_len_wr); |
| 1102 | strlcat(msg, msgchunk, MAXERRDETAIL); |
| 1103 | for (i = 0; i < hdr->sb_len_wr; i++) { |
| 1104 | snprintf(msgchunk, MAXMSGCHUNK, " %02x", hdr->sbp[i]); |
| 1105 | strlcat(msg, msgchunk, MAXERRDETAIL); |
| 1106 | } |
| 1107 | strlcat(msg, ". ", MAXERRDETAIL); |
| 1108 | } |
| 1109 | if (hdr->resid != 0) { |
| 1110 | snprintf(msgchunk, MAXMSGCHUNK, "SG Driver: %d bytes out of %d not transferred. ", hdr->resid, hdr->dxfer_len); |
| 1111 | strlcat(msg, msgchunk, MAXERRDETAIL); |
| 1112 | } |
| 1113 | } |
| 1114 | |
| 1115 | if (!(hdr->info & SG_INFO_CHECK) && !strlen(msg)) |
| 1116 | strncpy(msg, "SG Driver did not report a Host, Driver or Device check", |
| 1117 | MAXERRDETAIL - 1); |
| 1118 | |
| 1119 | return msg; |
| 1120 | } |
| 1121 | |
| 1122 | /* |
| 1123 | * get max file size from read capacity. |
| 1124 | */ |
| 1125 | static int fio_sgio_get_file_size(struct thread_data *td, struct fio_file *f) |
| 1126 | { |
| 1127 | /* |
| 1128 | * get_file_size is being called even before sgio_init is |
| 1129 | * called, so none of the sg_io structures are |
| 1130 | * initialized in the thread_data yet. So we need to do the |
| 1131 | * ReadCapacity without any of those helpers. One of the effects |
| 1132 | * is that ReadCapacity may get called 4 times on each open: |
| 1133 | * readcap(10) followed by readcap(16) if needed - just to get |
| 1134 | * the file size after the init occurs - it will be called |
| 1135 | * again when "type_check" is called during structure |
| 1136 | * initialization I'm not sure how to prevent this little |
| 1137 | * inefficiency. |
| 1138 | */ |
| 1139 | unsigned int bs = 0; |
| 1140 | unsigned long long max_lba = 0; |
| 1141 | int ret; |
| 1142 | |
| 1143 | if (fio_file_size_known(f)) |
| 1144 | return 0; |
| 1145 | |
| 1146 | if (f->filetype != FIO_TYPE_BLOCK && f->filetype != FIO_TYPE_CHAR) { |
| 1147 | td_verror(td, EINVAL, "wrong file type"); |
| 1148 | log_err("ioengine sg only works on block or character devices\n"); |
| 1149 | return 1; |
| 1150 | } |
| 1151 | |
| 1152 | ret = fio_sgio_read_capacity(td, &bs, &max_lba); |
| 1153 | if (ret ) { |
| 1154 | td_verror(td, td->error, "fio_sgio_read_capacity"); |
| 1155 | log_err("ioengine sg unable to successfully execute read capacity to get block size and maximum lba\n"); |
| 1156 | return 1; |
| 1157 | } |
| 1158 | |
| 1159 | f->real_file_size = (max_lba + 1) * bs; |
| 1160 | fio_file_set_size_known(f); |
| 1161 | return 0; |
| 1162 | } |
| 1163 | |
| 1164 | |
| 1165 | static struct ioengine_ops ioengine = { |
| 1166 | .name = "sg", |
| 1167 | .version = FIO_IOOPS_VERSION, |
| 1168 | .init = fio_sgio_init, |
| 1169 | .prep = fio_sgio_prep, |
| 1170 | .queue = fio_sgio_queue, |
| 1171 | .commit = fio_sgio_commit, |
| 1172 | .getevents = fio_sgio_getevents, |
| 1173 | .errdetails = fio_sgio_errdetails, |
| 1174 | .event = fio_sgio_event, |
| 1175 | .cleanup = fio_sgio_cleanup, |
| 1176 | .open_file = fio_sgio_open, |
| 1177 | .close_file = generic_close_file, |
| 1178 | .get_file_size = fio_sgio_get_file_size, |
| 1179 | .flags = FIO_SYNCIO | FIO_RAWIO, |
| 1180 | .options = options, |
| 1181 | .option_struct_size = sizeof(struct sg_options) |
| 1182 | }; |
| 1183 | |
| 1184 | #else /* FIO_HAVE_SGIO */ |
| 1185 | |
| 1186 | /* |
| 1187 | * When we have a proper configure system in place, we simply wont build |
| 1188 | * and install this io engine. For now install a crippled version that |
| 1189 | * just complains and fails to load. |
| 1190 | */ |
| 1191 | static int fio_sgio_init(struct thread_data fio_unused *td) |
| 1192 | { |
| 1193 | log_err("fio: ioengine sg not available\n"); |
| 1194 | return 1; |
| 1195 | } |
| 1196 | |
| 1197 | static struct ioengine_ops ioengine = { |
| 1198 | .name = "sg", |
| 1199 | .version = FIO_IOOPS_VERSION, |
| 1200 | .init = fio_sgio_init, |
| 1201 | }; |
| 1202 | |
| 1203 | #endif |
| 1204 | |
| 1205 | static void fio_init fio_sgio_register(void) |
| 1206 | { |
| 1207 | register_ioengine(&ioengine); |
| 1208 | } |
| 1209 | |
| 1210 | static void fio_exit fio_sgio_unregister(void) |
| 1211 | { |
| 1212 | unregister_ioengine(&ioengine); |
| 1213 | } |