Revision 39a5235c qemu-nbd.c
| b/qemu-nbd.c | ||
|---|---|---|
| 33 | 33 |
#include <libgen.h> |
| 34 | 34 |
#include <pthread.h> |
| 35 | 35 |
|
| 36 |
#define SOCKET_PATH "/var/lock/qemu-nbd-%s" |
|
| 36 |
#define SOCKET_PATH "/var/lock/qemu-nbd-%s" |
|
| 37 |
#define QEMU_NBD_OPT_CACHE 1 |
|
| 38 |
#define QEMU_NBD_OPT_AIO 2 |
|
| 37 | 39 |
|
| 38 | 40 |
static NBDExport *exp; |
| 39 | 41 |
static int verbose; |
| ... | ... | |
| 77 | 79 |
" -r, --read-only export read-only\n" |
| 78 | 80 |
" -s, --snapshot use snapshot file\n" |
| 79 | 81 |
" -n, --nocache disable host cache\n" |
| 82 |
" --cache=MODE set cache mode (none, writeback, ...)\n" |
|
| 83 |
#ifdef CONFIG_LINUX_AIO |
|
| 84 |
" --aio=MODE set AIO mode (native or threads)\n" |
|
| 85 |
#endif |
|
| 80 | 86 |
"\n" |
| 81 | 87 |
"Report bugs to <qemu-devel@nongnu.org>\n" |
| 82 | 88 |
, name, NBD_DEFAULT_PORT, "DEVICE"); |
| ... | ... | |
| 306 | 312 |
{ "disconnect", 0, NULL, 'd' },
|
| 307 | 313 |
{ "snapshot", 0, NULL, 's' },
|
| 308 | 314 |
{ "nocache", 0, NULL, 'n' },
|
| 315 |
{ "cache", 1, NULL, QEMU_NBD_OPT_CACHE },
|
|
| 316 |
#ifdef CONFIG_LINUX_AIO |
|
| 317 |
{ "aio", 1, NULL, QEMU_NBD_OPT_AIO },
|
|
| 318 |
#endif |
|
| 309 | 319 |
{ "shared", 1, NULL, 'e' },
|
| 310 | 320 |
{ "persistent", 0, NULL, 't' },
|
| 311 | 321 |
{ "verbose", 0, NULL, 'v' },
|
| ... | ... | |
| 320 | 330 |
int ret; |
| 321 | 331 |
int fd; |
| 322 | 332 |
int persistent = 0; |
| 333 |
bool seen_cache = false; |
|
| 334 |
#ifdef CONFIG_LINUX_AIO |
|
| 335 |
bool seen_aio = false; |
|
| 336 |
#endif |
|
| 323 | 337 |
pthread_t client_thread; |
| 324 | 338 |
|
| 325 | 339 |
/* The client thread uses SIGTERM to interrupt the server. A signal |
| ... | ... | |
| 336 | 350 |
flags |= BDRV_O_SNAPSHOT; |
| 337 | 351 |
break; |
| 338 | 352 |
case 'n': |
| 339 |
flags |= BDRV_O_NOCACHE | BDRV_O_CACHE_WB; |
|
| 353 |
optarg = (char *) "none"; |
|
| 354 |
/* fallthrough */ |
|
| 355 |
case QEMU_NBD_OPT_CACHE: |
|
| 356 |
if (seen_cache) {
|
|
| 357 |
errx(EXIT_FAILURE, "-n and --cache can only be specified once"); |
|
| 358 |
} |
|
| 359 |
seen_cache = true; |
|
| 360 |
if (bdrv_parse_cache_flags(optarg, &flags) == -1) {
|
|
| 361 |
errx(EXIT_FAILURE, "Invalid cache mode `%s'", optarg); |
|
| 362 |
} |
|
| 340 | 363 |
break; |
| 364 |
#ifdef CONFIG_LINUX_AIO |
|
| 365 |
case QEMU_NBD_OPT_AIO: |
|
| 366 |
if (seen_aio) {
|
|
| 367 |
errx(EXIT_FAILURE, "--aio can only be specified once"); |
|
| 368 |
} |
|
| 369 |
seen_aio = true; |
|
| 370 |
if (!strcmp(optarg, "native")) {
|
|
| 371 |
flags |= BDRV_O_NATIVE_AIO; |
|
| 372 |
} else if (!strcmp(optarg, "threads")) {
|
|
| 373 |
/* this is the default */ |
|
| 374 |
} else {
|
|
| 375 |
errx(EXIT_FAILURE, "invalid aio mode `%s'", optarg); |
|
| 376 |
} |
|
| 377 |
break; |
|
| 378 |
#endif |
|
| 341 | 379 |
case 'b': |
| 342 | 380 |
bindto = optarg; |
| 343 | 381 |
break; |
Also available in: Unified diff