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Commit | Line | Data |
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8d6d89cb BR |
1 | /* |
2 | * GlusterFS backend for QEMU | |
3 | * | |
4 | * Copyright (C) 2012 Bharata B Rao <bharata@linux.vnet.ibm.com> | |
5 | * | |
85c09bc0 BR |
6 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
7 | * See the COPYING file in the top-level directory. | |
8d6d89cb | 8 | * |
8d6d89cb | 9 | */ |
80c71a24 | 10 | #include "qemu/osdep.h" |
8d6d89cb | 11 | #include <glusterfs/api/glfs.h> |
737e150e | 12 | #include "block/block_int.h" |
da34e65c | 13 | #include "qapi/error.h" |
6c7189bb | 14 | #include "qapi/qmp/qerror.h" |
e152ef7a | 15 | #include "qapi/util.h" |
1de7afc9 | 16 | #include "qemu/uri.h" |
0552ff24 | 17 | #include "qemu/error-report.h" |
c56ac33b | 18 | #include "qemu/cutils.h" |
8d6d89cb | 19 | |
f70c50c8 | 20 | #define GLUSTER_OPT_FILENAME "filename" |
6c7189bb PKK |
21 | #define GLUSTER_OPT_VOLUME "volume" |
22 | #define GLUSTER_OPT_PATH "path" | |
23 | #define GLUSTER_OPT_TYPE "type" | |
24 | #define GLUSTER_OPT_SERVER_PATTERN "server." | |
25 | #define GLUSTER_OPT_HOST "host" | |
26 | #define GLUSTER_OPT_PORT "port" | |
27 | #define GLUSTER_OPT_TO "to" | |
28 | #define GLUSTER_OPT_IPV4 "ipv4" | |
29 | #define GLUSTER_OPT_IPV6 "ipv6" | |
30 | #define GLUSTER_OPT_SOCKET "socket" | |
f70c50c8 | 31 | #define GLUSTER_OPT_DEBUG "debug" |
7edac2dd | 32 | #define GLUSTER_DEFAULT_PORT 24007 |
f70c50c8 PKK |
33 | #define GLUSTER_DEBUG_DEFAULT 4 |
34 | #define GLUSTER_DEBUG_MAX 9 | |
e9db8ff3 PKK |
35 | #define GLUSTER_OPT_LOGFILE "logfile" |
36 | #define GLUSTER_LOGFILE_DEFAULT "-" /* handled in libgfapi as /dev/stderr */ | |
f70c50c8 | 37 | |
6c7189bb | 38 | #define GERR_INDEX_HINT "hint: check in 'server' array index '%d'\n" |
f70c50c8 | 39 | |
8d6d89cb | 40 | typedef struct GlusterAIOCB { |
8d6d89cb BR |
41 | int64_t size; |
42 | int ret; | |
15744b0b | 43 | Coroutine *coroutine; |
6ee50af2 | 44 | AioContext *aio_context; |
8d6d89cb BR |
45 | } GlusterAIOCB; |
46 | ||
47 | typedef struct BDRVGlusterState { | |
48 | struct glfs *glfs; | |
8d6d89cb | 49 | struct glfs_fd *fd; |
e9db8ff3 | 50 | char *logfile; |
947eb203 | 51 | bool supports_seek_data; |
1a417e46 | 52 | int debug; |
8d6d89cb BR |
53 | } BDRVGlusterState; |
54 | ||
f70c50c8 PKK |
55 | typedef struct BDRVGlusterReopenState { |
56 | struct glfs *glfs; | |
57 | struct glfs_fd *fd; | |
58 | } BDRVGlusterReopenState; | |
59 | ||
f70c50c8 | 60 | |
6349c154 PKK |
61 | typedef struct GlfsPreopened { |
62 | char *volume; | |
63 | glfs_t *fs; | |
64 | int ref; | |
65 | } GlfsPreopened; | |
66 | ||
67 | typedef struct ListElement { | |
68 | QLIST_ENTRY(ListElement) list; | |
69 | GlfsPreopened saved; | |
70 | } ListElement; | |
71 | ||
72 | static QLIST_HEAD(glfs_list, ListElement) glfs_list; | |
73 | ||
f70c50c8 PKK |
74 | static QemuOptsList qemu_gluster_create_opts = { |
75 | .name = "qemu-gluster-create-opts", | |
76 | .head = QTAILQ_HEAD_INITIALIZER(qemu_gluster_create_opts.head), | |
77 | .desc = { | |
78 | { | |
79 | .name = BLOCK_OPT_SIZE, | |
80 | .type = QEMU_OPT_SIZE, | |
81 | .help = "Virtual disk size" | |
82 | }, | |
83 | { | |
84 | .name = BLOCK_OPT_PREALLOC, | |
85 | .type = QEMU_OPT_STRING, | |
86 | .help = "Preallocation mode (allowed values: off, full)" | |
87 | }, | |
88 | { | |
89 | .name = GLUSTER_OPT_DEBUG, | |
90 | .type = QEMU_OPT_NUMBER, | |
91 | .help = "Gluster log level, valid range is 0-9", | |
92 | }, | |
e9db8ff3 PKK |
93 | { |
94 | .name = GLUSTER_OPT_LOGFILE, | |
95 | .type = QEMU_OPT_STRING, | |
96 | .help = "Logfile path of libgfapi", | |
97 | }, | |
f70c50c8 PKK |
98 | { /* end of list */ } |
99 | } | |
100 | }; | |
101 | ||
102 | static QemuOptsList runtime_opts = { | |
103 | .name = "gluster", | |
104 | .head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head), | |
105 | .desc = { | |
106 | { | |
107 | .name = GLUSTER_OPT_FILENAME, | |
108 | .type = QEMU_OPT_STRING, | |
109 | .help = "URL to the gluster image", | |
110 | }, | |
111 | { | |
112 | .name = GLUSTER_OPT_DEBUG, | |
113 | .type = QEMU_OPT_NUMBER, | |
114 | .help = "Gluster log level, valid range is 0-9", | |
115 | }, | |
e9db8ff3 PKK |
116 | { |
117 | .name = GLUSTER_OPT_LOGFILE, | |
118 | .type = QEMU_OPT_STRING, | |
119 | .help = "Logfile path of libgfapi", | |
120 | }, | |
f70c50c8 PKK |
121 | { /* end of list */ } |
122 | }, | |
123 | }; | |
124 | ||
6c7189bb PKK |
125 | static QemuOptsList runtime_json_opts = { |
126 | .name = "gluster_json", | |
127 | .head = QTAILQ_HEAD_INITIALIZER(runtime_json_opts.head), | |
128 | .desc = { | |
129 | { | |
130 | .name = GLUSTER_OPT_VOLUME, | |
131 | .type = QEMU_OPT_STRING, | |
132 | .help = "name of gluster volume where VM image resides", | |
133 | }, | |
134 | { | |
135 | .name = GLUSTER_OPT_PATH, | |
136 | .type = QEMU_OPT_STRING, | |
137 | .help = "absolute path to image file in gluster volume", | |
138 | }, | |
139 | { | |
140 | .name = GLUSTER_OPT_DEBUG, | |
141 | .type = QEMU_OPT_NUMBER, | |
142 | .help = "Gluster log level, valid range is 0-9", | |
143 | }, | |
144 | { /* end of list */ } | |
145 | }, | |
146 | }; | |
147 | ||
148 | static QemuOptsList runtime_type_opts = { | |
149 | .name = "gluster_type", | |
150 | .head = QTAILQ_HEAD_INITIALIZER(runtime_type_opts.head), | |
151 | .desc = { | |
152 | { | |
153 | .name = GLUSTER_OPT_TYPE, | |
154 | .type = QEMU_OPT_STRING, | |
c5f1ae3a | 155 | .help = "inet|unix", |
6c7189bb PKK |
156 | }, |
157 | { /* end of list */ } | |
158 | }, | |
159 | }; | |
160 | ||
161 | static QemuOptsList runtime_unix_opts = { | |
162 | .name = "gluster_unix", | |
163 | .head = QTAILQ_HEAD_INITIALIZER(runtime_unix_opts.head), | |
164 | .desc = { | |
165 | { | |
166 | .name = GLUSTER_OPT_SOCKET, | |
167 | .type = QEMU_OPT_STRING, | |
168 | .help = "socket file path)", | |
169 | }, | |
170 | { /* end of list */ } | |
171 | }, | |
172 | }; | |
173 | ||
c5f1ae3a MA |
174 | static QemuOptsList runtime_inet_opts = { |
175 | .name = "gluster_inet", | |
176 | .head = QTAILQ_HEAD_INITIALIZER(runtime_inet_opts.head), | |
6c7189bb PKK |
177 | .desc = { |
178 | { | |
179 | .name = GLUSTER_OPT_TYPE, | |
180 | .type = QEMU_OPT_STRING, | |
c5f1ae3a | 181 | .help = "inet|unix", |
6c7189bb PKK |
182 | }, |
183 | { | |
184 | .name = GLUSTER_OPT_HOST, | |
185 | .type = QEMU_OPT_STRING, | |
186 | .help = "host address (hostname/ipv4/ipv6 addresses)", | |
187 | }, | |
188 | { | |
189 | .name = GLUSTER_OPT_PORT, | |
53d9837f | 190 | .type = QEMU_OPT_STRING, |
6c7189bb PKK |
191 | .help = "port number on which glusterd is listening (default 24007)", |
192 | }, | |
193 | { | |
194 | .name = "to", | |
195 | .type = QEMU_OPT_NUMBER, | |
196 | .help = "max port number, not supported by gluster", | |
197 | }, | |
198 | { | |
199 | .name = "ipv4", | |
200 | .type = QEMU_OPT_BOOL, | |
201 | .help = "ipv4 bool value, not supported by gluster", | |
202 | }, | |
203 | { | |
204 | .name = "ipv6", | |
205 | .type = QEMU_OPT_BOOL, | |
206 | .help = "ipv6 bool value, not supported by gluster", | |
207 | }, | |
208 | { /* end of list */ } | |
209 | }, | |
210 | }; | |
f70c50c8 | 211 | |
6349c154 PKK |
212 | static void glfs_set_preopened(const char *volume, glfs_t *fs) |
213 | { | |
214 | ListElement *entry = NULL; | |
215 | ||
216 | entry = g_new(ListElement, 1); | |
217 | ||
218 | entry->saved.volume = g_strdup(volume); | |
219 | ||
220 | entry->saved.fs = fs; | |
221 | entry->saved.ref = 1; | |
222 | ||
223 | QLIST_INSERT_HEAD(&glfs_list, entry, list); | |
224 | } | |
225 | ||
226 | static glfs_t *glfs_find_preopened(const char *volume) | |
227 | { | |
228 | ListElement *entry = NULL; | |
229 | ||
230 | QLIST_FOREACH(entry, &glfs_list, list) { | |
231 | if (strcmp(entry->saved.volume, volume) == 0) { | |
232 | entry->saved.ref++; | |
233 | return entry->saved.fs; | |
234 | } | |
235 | } | |
236 | ||
237 | return NULL; | |
238 | } | |
239 | ||
240 | static void glfs_clear_preopened(glfs_t *fs) | |
241 | { | |
242 | ListElement *entry = NULL; | |
668c0e44 | 243 | ListElement *next; |
6349c154 PKK |
244 | |
245 | if (fs == NULL) { | |
246 | return; | |
247 | } | |
248 | ||
668c0e44 | 249 | QLIST_FOREACH_SAFE(entry, &glfs_list, list, next) { |
6349c154 PKK |
250 | if (entry->saved.fs == fs) { |
251 | if (--entry->saved.ref) { | |
252 | return; | |
253 | } | |
254 | ||
255 | QLIST_REMOVE(entry, list); | |
256 | ||
257 | glfs_fini(entry->saved.fs); | |
258 | g_free(entry->saved.volume); | |
259 | g_free(entry); | |
260 | } | |
261 | } | |
262 | } | |
263 | ||
7edac2dd | 264 | static int parse_volume_options(BlockdevOptionsGluster *gconf, char *path) |
8d6d89cb BR |
265 | { |
266 | char *p, *q; | |
267 | ||
268 | if (!path) { | |
269 | return -EINVAL; | |
270 | } | |
271 | ||
272 | /* volume */ | |
273 | p = q = path + strspn(path, "/"); | |
274 | p += strcspn(p, "/"); | |
275 | if (*p == '\0') { | |
276 | return -EINVAL; | |
277 | } | |
d5cf4079 | 278 | gconf->volume = g_strndup(q, p - q); |
8d6d89cb | 279 | |
d5cf4079 | 280 | /* path */ |
8d6d89cb BR |
281 | p += strspn(p, "/"); |
282 | if (*p == '\0') { | |
283 | return -EINVAL; | |
284 | } | |
d5cf4079 | 285 | gconf->path = g_strdup(p); |
8d6d89cb BR |
286 | return 0; |
287 | } | |
288 | ||
289 | /* | |
d5cf4079 | 290 | * file=gluster[+transport]://[host[:port]]/volume/path[?socket=...] |
8d6d89cb BR |
291 | * |
292 | * 'gluster' is the protocol. | |
293 | * | |
294 | * 'transport' specifies the transport type used to connect to gluster | |
295 | * management daemon (glusterd). Valid transport types are | |
0552ff24 | 296 | * tcp or unix. If a transport type isn't specified, then tcp type is assumed. |
8d6d89cb | 297 | * |
d5cf4079 | 298 | * 'host' specifies the host where the volume file specification for |
0552ff24 | 299 | * the given volume resides. This can be either hostname or ipv4 address. |
d5cf4079 | 300 | * If transport type is 'unix', then 'host' field should not be specified. |
8d6d89cb BR |
301 | * The 'socket' field needs to be populated with the path to unix domain |
302 | * socket. | |
303 | * | |
304 | * 'port' is the port number on which glusterd is listening. This is optional | |
305 | * and if not specified, QEMU will send 0 which will make gluster to use the | |
306 | * default port. If the transport type is unix, then 'port' should not be | |
307 | * specified. | |
308 | * | |
d5cf4079 | 309 | * 'volume' is the name of the gluster volume which contains the VM image. |
8d6d89cb | 310 | * |
d5cf4079 | 311 | * 'path' is the path to the actual VM image that resides on gluster volume. |
8d6d89cb BR |
312 | * |
313 | * Examples: | |
314 | * | |
315 | * file=gluster://1.2.3.4/testvol/a.img | |
316 | * file=gluster+tcp://1.2.3.4/testvol/a.img | |
317 | * file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img | |
d5cf4079 | 318 | * file=gluster+tcp://host.domain.com:24007/testvol/dir/a.img |
8d6d89cb | 319 | * file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket |
8d6d89cb | 320 | */ |
7edac2dd PKK |
321 | static int qemu_gluster_parse_uri(BlockdevOptionsGluster *gconf, |
322 | const char *filename) | |
8d6d89cb | 323 | { |
2b733709 | 324 | SocketAddressFlat *gsconf; |
8d6d89cb BR |
325 | URI *uri; |
326 | QueryParams *qp = NULL; | |
327 | bool is_unix = false; | |
328 | int ret = 0; | |
329 | ||
330 | uri = uri_parse(filename); | |
331 | if (!uri) { | |
332 | return -EINVAL; | |
333 | } | |
334 | ||
2b733709 MA |
335 | gconf->server = g_new0(SocketAddressFlatList, 1); |
336 | gconf->server->value = gsconf = g_new0(SocketAddressFlat, 1); | |
7edac2dd | 337 | |
8d6d89cb | 338 | /* transport */ |
24897a76 | 339 | if (!uri->scheme || !strcmp(uri->scheme, "gluster")) { |
c5f1ae3a | 340 | gsconf->type = SOCKET_ADDRESS_FLAT_TYPE_INET; |
8d6d89cb | 341 | } else if (!strcmp(uri->scheme, "gluster+tcp")) { |
c5f1ae3a | 342 | gsconf->type = SOCKET_ADDRESS_FLAT_TYPE_INET; |
8d6d89cb | 343 | } else if (!strcmp(uri->scheme, "gluster+unix")) { |
2b733709 | 344 | gsconf->type = SOCKET_ADDRESS_FLAT_TYPE_UNIX; |
8d6d89cb BR |
345 | is_unix = true; |
346 | } else if (!strcmp(uri->scheme, "gluster+rdma")) { | |
c5f1ae3a | 347 | gsconf->type = SOCKET_ADDRESS_FLAT_TYPE_INET; |
0552ff24 PKK |
348 | error_report("Warning: rdma feature is not supported, falling " |
349 | "back to tcp"); | |
8d6d89cb BR |
350 | } else { |
351 | ret = -EINVAL; | |
352 | goto out; | |
353 | } | |
354 | ||
355 | ret = parse_volume_options(gconf, uri->path); | |
356 | if (ret < 0) { | |
357 | goto out; | |
358 | } | |
359 | ||
360 | qp = query_params_parse(uri->query); | |
361 | if (qp->n > 1 || (is_unix && !qp->n) || (!is_unix && qp->n)) { | |
362 | ret = -EINVAL; | |
363 | goto out; | |
364 | } | |
365 | ||
366 | if (is_unix) { | |
367 | if (uri->server || uri->port) { | |
368 | ret = -EINVAL; | |
369 | goto out; | |
370 | } | |
371 | if (strcmp(qp->p[0].name, "socket")) { | |
372 | ret = -EINVAL; | |
373 | goto out; | |
374 | } | |
7edac2dd | 375 | gsconf->u.q_unix.path = g_strdup(qp->p[0].value); |
8d6d89cb | 376 | } else { |
c5f1ae3a | 377 | gsconf->u.inet.host = g_strdup(uri->server ? uri->server : "localhost"); |
7edac2dd | 378 | if (uri->port) { |
c5f1ae3a | 379 | gsconf->u.inet.port = g_strdup_printf("%d", uri->port); |
7edac2dd | 380 | } else { |
c5f1ae3a | 381 | gsconf->u.inet.port = g_strdup_printf("%d", GLUSTER_DEFAULT_PORT); |
7edac2dd | 382 | } |
8d6d89cb BR |
383 | } |
384 | ||
385 | out: | |
386 | if (qp) { | |
387 | query_params_free(qp); | |
388 | } | |
389 | uri_free(uri); | |
390 | return ret; | |
391 | } | |
392 | ||
6c7189bb PKK |
393 | static struct glfs *qemu_gluster_glfs_init(BlockdevOptionsGluster *gconf, |
394 | Error **errp) | |
8d6d89cb | 395 | { |
6c7189bb | 396 | struct glfs *glfs; |
8d6d89cb BR |
397 | int ret; |
398 | int old_errno; | |
2b733709 | 399 | SocketAddressFlatList *server; |
c56ac33b | 400 | unsigned long long port; |
8d6d89cb | 401 | |
6349c154 PKK |
402 | glfs = glfs_find_preopened(gconf->volume); |
403 | if (glfs) { | |
404 | return glfs; | |
405 | } | |
406 | ||
d5cf4079 | 407 | glfs = glfs_new(gconf->volume); |
8d6d89cb BR |
408 | if (!glfs) { |
409 | goto out; | |
410 | } | |
411 | ||
6349c154 PKK |
412 | glfs_set_preopened(gconf->volume, glfs); |
413 | ||
6c7189bb | 414 | for (server = gconf->server; server; server = server->next) { |
2b733709 | 415 | if (server->value->type == SOCKET_ADDRESS_FLAT_TYPE_UNIX) { |
fc29458d | 416 | ret = glfs_set_volfile_server(glfs, "unix", |
6c7189bb PKK |
417 | server->value->u.q_unix.path, 0); |
418 | } else { | |
c5f1ae3a | 419 | if (parse_uint_full(server->value->u.inet.port, &port, 10) < 0 || |
c56ac33b PKK |
420 | port > 65535) { |
421 | error_setg(errp, "'%s' is not a valid port number", | |
c5f1ae3a | 422 | server->value->u.inet.port); |
c56ac33b PKK |
423 | errno = EINVAL; |
424 | goto out; | |
425 | } | |
fc29458d | 426 | ret = glfs_set_volfile_server(glfs, "tcp", |
c5f1ae3a | 427 | server->value->u.inet.host, |
c56ac33b | 428 | (int)port); |
6c7189bb PKK |
429 | } |
430 | ||
431 | if (ret < 0) { | |
432 | goto out; | |
433 | } | |
8d6d89cb BR |
434 | } |
435 | ||
1a417e46 | 436 | ret = glfs_set_logging(glfs, gconf->logfile, gconf->debug); |
8d6d89cb BR |
437 | if (ret < 0) { |
438 | goto out; | |
439 | } | |
440 | ||
441 | ret = glfs_init(glfs); | |
442 | if (ret) { | |
6c7189bb PKK |
443 | error_setg(errp, "Gluster connection for volume %s, path %s failed" |
444 | " to connect", gconf->volume, gconf->path); | |
445 | for (server = gconf->server; server; server = server->next) { | |
2b733709 | 446 | if (server->value->type == SOCKET_ADDRESS_FLAT_TYPE_UNIX) { |
6c7189bb PKK |
447 | error_append_hint(errp, "hint: failed on socket %s ", |
448 | server->value->u.q_unix.path); | |
449 | } else { | |
450 | error_append_hint(errp, "hint: failed on host %s and port %s ", | |
c5f1ae3a MA |
451 | server->value->u.inet.host, |
452 | server->value->u.inet.port); | |
6c7189bb | 453 | } |
7edac2dd | 454 | } |
4557117d | 455 | |
6c7189bb PKK |
456 | error_append_hint(errp, "Please refer to gluster logs for more info\n"); |
457 | ||
4557117d | 458 | /* glfs_init sometimes doesn't set errno although docs suggest that */ |
7edac2dd | 459 | if (errno == 0) { |
4557117d | 460 | errno = EINVAL; |
7edac2dd | 461 | } |
4557117d | 462 | |
8d6d89cb BR |
463 | goto out; |
464 | } | |
465 | return glfs; | |
466 | ||
467 | out: | |
468 | if (glfs) { | |
469 | old_errno = errno; | |
6349c154 | 470 | glfs_clear_preopened(glfs); |
8d6d89cb BR |
471 | errno = old_errno; |
472 | } | |
473 | return NULL; | |
474 | } | |
475 | ||
6c7189bb PKK |
476 | /* |
477 | * Convert the json formatted command line into qapi. | |
478 | */ | |
479 | static int qemu_gluster_parse_json(BlockdevOptionsGluster *gconf, | |
480 | QDict *options, Error **errp) | |
481 | { | |
482 | QemuOpts *opts; | |
2b733709 MA |
483 | SocketAddressFlat *gsconf = NULL; |
484 | SocketAddressFlatList *curr = NULL; | |
6c7189bb PKK |
485 | QDict *backing_options = NULL; |
486 | Error *local_err = NULL; | |
487 | char *str = NULL; | |
488 | const char *ptr; | |
489 | size_t num_servers; | |
490 | int i; | |
491 | ||
492 | /* create opts info from runtime_json_opts list */ | |
493 | opts = qemu_opts_create(&runtime_json_opts, NULL, 0, &error_abort); | |
494 | qemu_opts_absorb_qdict(opts, options, &local_err); | |
495 | if (local_err) { | |
496 | goto out; | |
497 | } | |
498 | ||
499 | num_servers = qdict_array_entries(options, GLUSTER_OPT_SERVER_PATTERN); | |
500 | if (num_servers < 1) { | |
501 | error_setg(&local_err, QERR_MISSING_PARAMETER, "server"); | |
502 | goto out; | |
503 | } | |
504 | ||
505 | ptr = qemu_opt_get(opts, GLUSTER_OPT_VOLUME); | |
506 | if (!ptr) { | |
507 | error_setg(&local_err, QERR_MISSING_PARAMETER, GLUSTER_OPT_VOLUME); | |
508 | goto out; | |
509 | } | |
510 | gconf->volume = g_strdup(ptr); | |
511 | ||
512 | ptr = qemu_opt_get(opts, GLUSTER_OPT_PATH); | |
513 | if (!ptr) { | |
514 | error_setg(&local_err, QERR_MISSING_PARAMETER, GLUSTER_OPT_PATH); | |
515 | goto out; | |
516 | } | |
517 | gconf->path = g_strdup(ptr); | |
518 | qemu_opts_del(opts); | |
519 | ||
520 | for (i = 0; i < num_servers; i++) { | |
521 | str = g_strdup_printf(GLUSTER_OPT_SERVER_PATTERN"%d.", i); | |
522 | qdict_extract_subqdict(options, &backing_options, str); | |
523 | ||
524 | /* create opts info from runtime_type_opts list */ | |
525 | opts = qemu_opts_create(&runtime_type_opts, NULL, 0, &error_abort); | |
526 | qemu_opts_absorb_qdict(opts, backing_options, &local_err); | |
527 | if (local_err) { | |
528 | goto out; | |
529 | } | |
530 | ||
531 | ptr = qemu_opt_get(opts, GLUSTER_OPT_TYPE); | |
6c7189bb PKK |
532 | if (!ptr) { |
533 | error_setg(&local_err, QERR_MISSING_PARAMETER, GLUSTER_OPT_TYPE); | |
534 | error_append_hint(&local_err, GERR_INDEX_HINT, i); | |
535 | goto out; | |
536 | ||
537 | } | |
2b733709 | 538 | gsconf = g_new0(SocketAddressFlat, 1); |
c5f1ae3a MA |
539 | if (!strcmp(ptr, "tcp")) { |
540 | ptr = "inet"; /* accept legacy "tcp" */ | |
541 | } | |
2b733709 MA |
542 | gsconf->type = qapi_enum_parse(SocketAddressFlatType_lookup, ptr, |
543 | SOCKET_ADDRESS_FLAT_TYPE__MAX, -1, | |
85a82e85 | 544 | &local_err); |
e152ef7a MA |
545 | if (local_err) { |
546 | error_append_hint(&local_err, | |
c5f1ae3a | 547 | "Parameter '%s' may be 'inet' or 'unix'\n", |
e152ef7a | 548 | GLUSTER_OPT_TYPE); |
6c7189bb PKK |
549 | error_append_hint(&local_err, GERR_INDEX_HINT, i); |
550 | goto out; | |
551 | } | |
552 | qemu_opts_del(opts); | |
553 | ||
c5f1ae3a MA |
554 | if (gsconf->type == SOCKET_ADDRESS_FLAT_TYPE_INET) { |
555 | /* create opts info from runtime_inet_opts list */ | |
556 | opts = qemu_opts_create(&runtime_inet_opts, NULL, 0, &error_abort); | |
6c7189bb PKK |
557 | qemu_opts_absorb_qdict(opts, backing_options, &local_err); |
558 | if (local_err) { | |
559 | goto out; | |
560 | } | |
561 | ||
562 | ptr = qemu_opt_get(opts, GLUSTER_OPT_HOST); | |
563 | if (!ptr) { | |
564 | error_setg(&local_err, QERR_MISSING_PARAMETER, | |
565 | GLUSTER_OPT_HOST); | |
566 | error_append_hint(&local_err, GERR_INDEX_HINT, i); | |
567 | goto out; | |
568 | } | |
c5f1ae3a | 569 | gsconf->u.inet.host = g_strdup(ptr); |
6c7189bb PKK |
570 | ptr = qemu_opt_get(opts, GLUSTER_OPT_PORT); |
571 | if (!ptr) { | |
572 | error_setg(&local_err, QERR_MISSING_PARAMETER, | |
573 | GLUSTER_OPT_PORT); | |
574 | error_append_hint(&local_err, GERR_INDEX_HINT, i); | |
575 | goto out; | |
576 | } | |
c5f1ae3a | 577 | gsconf->u.inet.port = g_strdup(ptr); |
6c7189bb PKK |
578 | |
579 | /* defend for unsupported fields in InetSocketAddress, | |
580 | * i.e. @ipv4, @ipv6 and @to | |
581 | */ | |
582 | ptr = qemu_opt_get(opts, GLUSTER_OPT_TO); | |
583 | if (ptr) { | |
c5f1ae3a | 584 | gsconf->u.inet.has_to = true; |
6c7189bb PKK |
585 | } |
586 | ptr = qemu_opt_get(opts, GLUSTER_OPT_IPV4); | |
587 | if (ptr) { | |
c5f1ae3a | 588 | gsconf->u.inet.has_ipv4 = true; |
6c7189bb PKK |
589 | } |
590 | ptr = qemu_opt_get(opts, GLUSTER_OPT_IPV6); | |
591 | if (ptr) { | |
c5f1ae3a | 592 | gsconf->u.inet.has_ipv6 = true; |
6c7189bb | 593 | } |
c5f1ae3a | 594 | if (gsconf->u.inet.has_to) { |
6c7189bb PKK |
595 | error_setg(&local_err, "Parameter 'to' not supported"); |
596 | goto out; | |
597 | } | |
c5f1ae3a | 598 | if (gsconf->u.inet.has_ipv4 || gsconf->u.inet.has_ipv6) { |
6c7189bb PKK |
599 | error_setg(&local_err, "Parameters 'ipv4/ipv6' not supported"); |
600 | goto out; | |
601 | } | |
602 | qemu_opts_del(opts); | |
603 | } else { | |
604 | /* create opts info from runtime_unix_opts list */ | |
605 | opts = qemu_opts_create(&runtime_unix_opts, NULL, 0, &error_abort); | |
606 | qemu_opts_absorb_qdict(opts, backing_options, &local_err); | |
607 | if (local_err) { | |
608 | goto out; | |
609 | } | |
610 | ||
611 | ptr = qemu_opt_get(opts, GLUSTER_OPT_SOCKET); | |
612 | if (!ptr) { | |
613 | error_setg(&local_err, QERR_MISSING_PARAMETER, | |
614 | GLUSTER_OPT_SOCKET); | |
615 | error_append_hint(&local_err, GERR_INDEX_HINT, i); | |
616 | goto out; | |
617 | } | |
618 | gsconf->u.q_unix.path = g_strdup(ptr); | |
619 | qemu_opts_del(opts); | |
620 | } | |
621 | ||
622 | if (gconf->server == NULL) { | |
2b733709 | 623 | gconf->server = g_new0(SocketAddressFlatList, 1); |
6c7189bb PKK |
624 | gconf->server->value = gsconf; |
625 | curr = gconf->server; | |
626 | } else { | |
2b733709 | 627 | curr->next = g_new0(SocketAddressFlatList, 1); |
6c7189bb PKK |
628 | curr->next->value = gsconf; |
629 | curr = curr->next; | |
630 | } | |
85a82e85 | 631 | gsconf = NULL; |
6c7189bb | 632 | |
85a82e85 MA |
633 | QDECREF(backing_options); |
634 | backing_options = NULL; | |
6c7189bb PKK |
635 | g_free(str); |
636 | str = NULL; | |
637 | } | |
638 | ||
639 | return 0; | |
640 | ||
641 | out: | |
642 | error_propagate(errp, local_err); | |
2b733709 | 643 | qapi_free_SocketAddressFlat(gsconf); |
6c7189bb | 644 | qemu_opts_del(opts); |
85a82e85 MA |
645 | g_free(str); |
646 | QDECREF(backing_options); | |
6c7189bb PKK |
647 | errno = EINVAL; |
648 | return -errno; | |
649 | } | |
650 | ||
651 | static struct glfs *qemu_gluster_init(BlockdevOptionsGluster *gconf, | |
652 | const char *filename, | |
653 | QDict *options, Error **errp) | |
654 | { | |
655 | int ret; | |
656 | if (filename) { | |
657 | ret = qemu_gluster_parse_uri(gconf, filename); | |
658 | if (ret < 0) { | |
659 | error_setg(errp, "invalid URI"); | |
660 | error_append_hint(errp, "Usage: file=gluster[+transport]://" | |
e9db8ff3 PKK |
661 | "[host[:port]]volume/path[?socket=...]" |
662 | "[,file.debug=N]" | |
663 | "[,file.logfile=/path/filename.log]\n"); | |
6c7189bb PKK |
664 | errno = -ret; |
665 | return NULL; | |
666 | } | |
667 | } else { | |
668 | ret = qemu_gluster_parse_json(gconf, options, errp); | |
669 | if (ret < 0) { | |
670 | error_append_hint(errp, "Usage: " | |
671 | "-drive driver=qcow2,file.driver=gluster," | |
672 | "file.volume=testvol,file.path=/path/a.qcow2" | |
e9db8ff3 PKK |
673 | "[,file.debug=9]" |
674 | "[,file.logfile=/path/filename.log]," | |
c5f1ae3a | 675 | "file.server.0.type=inet," |
6c7189bb PKK |
676 | "file.server.0.host=1.2.3.4," |
677 | "file.server.0.port=24007," | |
678 | "file.server.1.transport=unix," | |
679 | "file.server.1.socket=/var/run/glusterd.socket ..." | |
680 | "\n"); | |
681 | errno = -ret; | |
682 | return NULL; | |
683 | } | |
684 | ||
685 | } | |
686 | ||
687 | return qemu_gluster_glfs_init(gconf, errp); | |
688 | } | |
689 | ||
7c815372 BR |
690 | /* |
691 | * AIO callback routine called from GlusterFS thread. | |
692 | */ | |
693 | static void gluster_finish_aiocb(struct glfs_fd *fd, ssize_t ret, void *arg) | |
694 | { | |
695 | GlusterAIOCB *acb = (GlusterAIOCB *)arg; | |
696 | ||
697 | if (!ret || ret == acb->size) { | |
698 | acb->ret = 0; /* Success */ | |
699 | } else if (ret < 0) { | |
a8827453 | 700 | acb->ret = -errno; /* Read/Write failed */ |
7c815372 BR |
701 | } else { |
702 | acb->ret = -EIO; /* Partial read/write - fail it */ | |
703 | } | |
704 | ||
1919631e | 705 | aio_co_schedule(acb->aio_context, acb->coroutine); |
7c815372 BR |
706 | } |
707 | ||
1b37b344 JC |
708 | static void qemu_gluster_parse_flags(int bdrv_flags, int *open_flags) |
709 | { | |
710 | assert(open_flags != NULL); | |
711 | ||
712 | *open_flags |= O_BINARY; | |
713 | ||
714 | if (bdrv_flags & BDRV_O_RDWR) { | |
715 | *open_flags |= O_RDWR; | |
716 | } else { | |
717 | *open_flags |= O_RDONLY; | |
718 | } | |
719 | ||
720 | if ((bdrv_flags & BDRV_O_NOCACHE)) { | |
721 | *open_flags |= O_DIRECT; | |
722 | } | |
723 | } | |
724 | ||
947eb203 NV |
725 | /* |
726 | * Do SEEK_DATA/HOLE to detect if it is functional. Older broken versions of | |
727 | * gfapi incorrectly return the current offset when SEEK_DATA/HOLE is used. | |
728 | * - Corrected versions return -1 and set errno to EINVAL. | |
729 | * - Versions that support SEEK_DATA/HOLE correctly, will return -1 and set | |
730 | * errno to ENXIO when SEEK_DATA is called with a position of EOF. | |
731 | */ | |
732 | static bool qemu_gluster_test_seek(struct glfs_fd *fd) | |
733 | { | |
d9b78974 JC |
734 | off_t ret = 0; |
735 | ||
736 | #if defined SEEK_HOLE && defined SEEK_DATA | |
737 | off_t eof; | |
947eb203 NV |
738 | |
739 | eof = glfs_lseek(fd, 0, SEEK_END); | |
740 | if (eof < 0) { | |
741 | /* this should never occur */ | |
742 | return false; | |
743 | } | |
744 | ||
745 | /* this should always fail with ENXIO if SEEK_DATA is supported */ | |
746 | ret = glfs_lseek(fd, eof, SEEK_DATA); | |
d9b78974 JC |
747 | #endif |
748 | ||
947eb203 NV |
749 | return (ret < 0) && (errno == ENXIO); |
750 | } | |
751 | ||
56d1b4d2 | 752 | static int qemu_gluster_open(BlockDriverState *bs, QDict *options, |
015a1036 | 753 | int bdrv_flags, Error **errp) |
8d6d89cb BR |
754 | { |
755 | BDRVGlusterState *s = bs->opaque; | |
1b37b344 | 756 | int open_flags = 0; |
8d6d89cb | 757 | int ret = 0; |
7edac2dd | 758 | BlockdevOptionsGluster *gconf = NULL; |
b4894776 KW |
759 | QemuOpts *opts; |
760 | Error *local_err = NULL; | |
e9db8ff3 | 761 | const char *filename, *logfile; |
b4894776 | 762 | |
87ea75d5 | 763 | opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort); |
b4894776 | 764 | qemu_opts_absorb_qdict(opts, options, &local_err); |
84d18f06 | 765 | if (local_err) { |
a7451cb8 | 766 | error_propagate(errp, local_err); |
b4894776 KW |
767 | ret = -EINVAL; |
768 | goto out; | |
769 | } | |
770 | ||
7eac868a JC |
771 | filename = qemu_opt_get(opts, GLUSTER_OPT_FILENAME); |
772 | ||
1a417e46 PKK |
773 | s->debug = qemu_opt_get_number(opts, GLUSTER_OPT_DEBUG, |
774 | GLUSTER_DEBUG_DEFAULT); | |
775 | if (s->debug < 0) { | |
776 | s->debug = 0; | |
777 | } else if (s->debug > GLUSTER_DEBUG_MAX) { | |
778 | s->debug = GLUSTER_DEBUG_MAX; | |
7eac868a | 779 | } |
b4894776 | 780 | |
7edac2dd | 781 | gconf = g_new0(BlockdevOptionsGluster, 1); |
1a417e46 PKK |
782 | gconf->debug = s->debug; |
783 | gconf->has_debug = true; | |
e9db8ff3 PKK |
784 | |
785 | logfile = qemu_opt_get(opts, GLUSTER_OPT_LOGFILE); | |
786 | s->logfile = g_strdup(logfile ? logfile : GLUSTER_LOGFILE_DEFAULT); | |
787 | ||
788 | gconf->logfile = g_strdup(s->logfile); | |
789 | gconf->has_logfile = true; | |
790 | ||
6c7189bb | 791 | s->glfs = qemu_gluster_init(gconf, filename, options, errp); |
8d6d89cb BR |
792 | if (!s->glfs) { |
793 | ret = -errno; | |
794 | goto out; | |
795 | } | |
796 | ||
d85fa9eb JC |
797 | #ifdef CONFIG_GLUSTERFS_XLATOR_OPT |
798 | /* Without this, if fsync fails for a recoverable reason (for instance, | |
799 | * ENOSPC), gluster will dump its cache, preventing retries. This means | |
800 | * almost certain data loss. Not all gluster versions support the | |
801 | * 'resync-failed-syncs-after-fsync' key value, but there is no way to | |
802 | * discover during runtime if it is supported (this api returns success for | |
803 | * unknown key/value pairs) */ | |
804 | ret = glfs_set_xlator_option(s->glfs, "*-write-behind", | |
805 | "resync-failed-syncs-after-fsync", | |
806 | "on"); | |
807 | if (ret < 0) { | |
808 | error_setg_errno(errp, errno, "Unable to set xlator key/value pair"); | |
809 | ret = -errno; | |
810 | goto out; | |
811 | } | |
812 | #endif | |
813 | ||
1b37b344 | 814 | qemu_gluster_parse_flags(bdrv_flags, &open_flags); |
8d6d89cb | 815 | |
d5cf4079 | 816 | s->fd = glfs_open(s->glfs, gconf->path, open_flags); |
8d6d89cb BR |
817 | if (!s->fd) { |
818 | ret = -errno; | |
8d6d89cb | 819 | } |
8d6d89cb | 820 | |
947eb203 NV |
821 | s->supports_seek_data = qemu_gluster_test_seek(s->fd); |
822 | ||
8d6d89cb | 823 | out: |
b4894776 | 824 | qemu_opts_del(opts); |
7edac2dd | 825 | qapi_free_BlockdevOptionsGluster(gconf); |
8d6d89cb BR |
826 | if (!ret) { |
827 | return ret; | |
828 | } | |
e9db8ff3 | 829 | g_free(s->logfile); |
8d6d89cb BR |
830 | if (s->fd) { |
831 | glfs_close(s->fd); | |
832 | } | |
6349c154 PKK |
833 | |
834 | glfs_clear_preopened(s->glfs); | |
835 | ||
8d6d89cb BR |
836 | return ret; |
837 | } | |
838 | ||
adccfbcd JC |
839 | static int qemu_gluster_reopen_prepare(BDRVReopenState *state, |
840 | BlockReopenQueue *queue, Error **errp) | |
841 | { | |
842 | int ret = 0; | |
7eac868a | 843 | BDRVGlusterState *s; |
adccfbcd | 844 | BDRVGlusterReopenState *reop_s; |
7edac2dd | 845 | BlockdevOptionsGluster *gconf; |
adccfbcd JC |
846 | int open_flags = 0; |
847 | ||
848 | assert(state != NULL); | |
849 | assert(state->bs != NULL); | |
850 | ||
7eac868a JC |
851 | s = state->bs->opaque; |
852 | ||
5839e53b | 853 | state->opaque = g_new0(BDRVGlusterReopenState, 1); |
adccfbcd JC |
854 | reop_s = state->opaque; |
855 | ||
856 | qemu_gluster_parse_flags(state->flags, &open_flags); | |
857 | ||
7edac2dd | 858 | gconf = g_new0(BlockdevOptionsGluster, 1); |
1a417e46 PKK |
859 | gconf->debug = s->debug; |
860 | gconf->has_debug = true; | |
e9db8ff3 PKK |
861 | gconf->logfile = g_strdup(s->logfile); |
862 | gconf->has_logfile = true; | |
6c7189bb | 863 | reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, NULL, errp); |
adccfbcd JC |
864 | if (reop_s->glfs == NULL) { |
865 | ret = -errno; | |
866 | goto exit; | |
867 | } | |
868 | ||
d85fa9eb JC |
869 | #ifdef CONFIG_GLUSTERFS_XLATOR_OPT |
870 | ret = glfs_set_xlator_option(reop_s->glfs, "*-write-behind", | |
871 | "resync-failed-syncs-after-fsync", "on"); | |
872 | if (ret < 0) { | |
873 | error_setg_errno(errp, errno, "Unable to set xlator key/value pair"); | |
874 | ret = -errno; | |
875 | goto exit; | |
876 | } | |
877 | #endif | |
878 | ||
d5cf4079 | 879 | reop_s->fd = glfs_open(reop_s->glfs, gconf->path, open_flags); |
adccfbcd JC |
880 | if (reop_s->fd == NULL) { |
881 | /* reops->glfs will be cleaned up in _abort */ | |
882 | ret = -errno; | |
883 | goto exit; | |
884 | } | |
885 | ||
886 | exit: | |
887 | /* state->opaque will be freed in either the _abort or _commit */ | |
7edac2dd | 888 | qapi_free_BlockdevOptionsGluster(gconf); |
adccfbcd JC |
889 | return ret; |
890 | } | |
891 | ||
892 | static void qemu_gluster_reopen_commit(BDRVReopenState *state) | |
893 | { | |
894 | BDRVGlusterReopenState *reop_s = state->opaque; | |
895 | BDRVGlusterState *s = state->bs->opaque; | |
896 | ||
897 | ||
898 | /* close the old */ | |
899 | if (s->fd) { | |
900 | glfs_close(s->fd); | |
901 | } | |
6349c154 PKK |
902 | |
903 | glfs_clear_preopened(s->glfs); | |
adccfbcd JC |
904 | |
905 | /* use the newly opened image / connection */ | |
906 | s->fd = reop_s->fd; | |
907 | s->glfs = reop_s->glfs; | |
908 | ||
909 | g_free(state->opaque); | |
910 | state->opaque = NULL; | |
911 | ||
912 | return; | |
913 | } | |
914 | ||
915 | ||
916 | static void qemu_gluster_reopen_abort(BDRVReopenState *state) | |
917 | { | |
918 | BDRVGlusterReopenState *reop_s = state->opaque; | |
919 | ||
920 | if (reop_s == NULL) { | |
921 | return; | |
922 | } | |
923 | ||
924 | if (reop_s->fd) { | |
925 | glfs_close(reop_s->fd); | |
926 | } | |
927 | ||
6349c154 | 928 | glfs_clear_preopened(reop_s->glfs); |
adccfbcd JC |
929 | |
930 | g_free(state->opaque); | |
931 | state->opaque = NULL; | |
932 | ||
933 | return; | |
934 | } | |
935 | ||
7c815372 | 936 | #ifdef CONFIG_GLUSTERFS_ZEROFILL |
e88a36eb | 937 | static coroutine_fn int qemu_gluster_co_pwrite_zeroes(BlockDriverState *bs, |
f70c50c8 PKK |
938 | int64_t offset, |
939 | int size, | |
940 | BdrvRequestFlags flags) | |
7c815372 BR |
941 | { |
942 | int ret; | |
c833d1e8 | 943 | GlusterAIOCB acb; |
7c815372 | 944 | BDRVGlusterState *s = bs->opaque; |
7c815372 | 945 | |
c833d1e8 PB |
946 | acb.size = size; |
947 | acb.ret = 0; | |
948 | acb.coroutine = qemu_coroutine_self(); | |
949 | acb.aio_context = bdrv_get_aio_context(bs); | |
7c815372 | 950 | |
c833d1e8 | 951 | ret = glfs_zerofill_async(s->fd, offset, size, gluster_finish_aiocb, &acb); |
7c815372 | 952 | if (ret < 0) { |
c833d1e8 | 953 | return -errno; |
7c815372 BR |
954 | } |
955 | ||
956 | qemu_coroutine_yield(); | |
c833d1e8 | 957 | return acb.ret; |
7c815372 | 958 | } |
cf7f616b BR |
959 | |
960 | static inline bool gluster_supports_zerofill(void) | |
961 | { | |
962 | return 1; | |
963 | } | |
964 | ||
965 | static inline int qemu_gluster_zerofill(struct glfs_fd *fd, int64_t offset, | |
f70c50c8 | 966 | int64_t size) |
cf7f616b BR |
967 | { |
968 | return glfs_zerofill(fd, offset, size); | |
969 | } | |
970 | ||
971 | #else | |
972 | static inline bool gluster_supports_zerofill(void) | |
973 | { | |
974 | return 0; | |
975 | } | |
976 | ||
977 | static inline int qemu_gluster_zerofill(struct glfs_fd *fd, int64_t offset, | |
f70c50c8 | 978 | int64_t size) |
cf7f616b BR |
979 | { |
980 | return 0; | |
981 | } | |
7c815372 BR |
982 | #endif |
983 | ||
8d6d89cb | 984 | static int qemu_gluster_create(const char *filename, |
90c772de | 985 | QemuOpts *opts, Error **errp) |
8d6d89cb | 986 | { |
7edac2dd | 987 | BlockdevOptionsGluster *gconf; |
8d6d89cb BR |
988 | struct glfs *glfs; |
989 | struct glfs_fd *fd; | |
990 | int ret = 0; | |
cf7f616b | 991 | int prealloc = 0; |
8d6d89cb | 992 | int64_t total_size = 0; |
90c772de | 993 | char *tmp = NULL; |
8d6d89cb | 994 | |
7edac2dd | 995 | gconf = g_new0(BlockdevOptionsGluster, 1); |
1a417e46 PKK |
996 | gconf->debug = qemu_opt_get_number_del(opts, GLUSTER_OPT_DEBUG, |
997 | GLUSTER_DEBUG_DEFAULT); | |
998 | if (gconf->debug < 0) { | |
999 | gconf->debug = 0; | |
1000 | } else if (gconf->debug > GLUSTER_DEBUG_MAX) { | |
1001 | gconf->debug = GLUSTER_DEBUG_MAX; | |
1002 | } | |
1003 | gconf->has_debug = true; | |
7eac868a | 1004 | |
e9db8ff3 PKK |
1005 | gconf->logfile = qemu_opt_get_del(opts, GLUSTER_OPT_LOGFILE); |
1006 | if (!gconf->logfile) { | |
1007 | gconf->logfile = g_strdup(GLUSTER_LOGFILE_DEFAULT); | |
1008 | } | |
1009 | gconf->has_logfile = true; | |
1010 | ||
6c7189bb | 1011 | glfs = qemu_gluster_init(gconf, filename, NULL, errp); |
8d6d89cb | 1012 | if (!glfs) { |
4557117d | 1013 | ret = -errno; |
8d6d89cb BR |
1014 | goto out; |
1015 | } | |
1016 | ||
180e9526 HT |
1017 | total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), |
1018 | BDRV_SECTOR_SIZE); | |
90c772de CL |
1019 | |
1020 | tmp = qemu_opt_get_del(opts, BLOCK_OPT_PREALLOC); | |
1021 | if (!tmp || !strcmp(tmp, "off")) { | |
1022 | prealloc = 0; | |
f70c50c8 | 1023 | } else if (!strcmp(tmp, "full") && gluster_supports_zerofill()) { |
90c772de CL |
1024 | prealloc = 1; |
1025 | } else { | |
1026 | error_setg(errp, "Invalid preallocation mode: '%s'" | |
f70c50c8 | 1027 | " or GlusterFS doesn't support zerofill API", tmp); |
90c772de CL |
1028 | ret = -EINVAL; |
1029 | goto out; | |
8d6d89cb BR |
1030 | } |
1031 | ||
d5cf4079 | 1032 | fd = glfs_creat(glfs, gconf->path, |
f70c50c8 | 1033 | O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, S_IRUSR | S_IWUSR); |
8d6d89cb BR |
1034 | if (!fd) { |
1035 | ret = -errno; | |
1036 | } else { | |
180e9526 HT |
1037 | if (!glfs_ftruncate(fd, total_size)) { |
1038 | if (prealloc && qemu_gluster_zerofill(fd, 0, total_size)) { | |
cf7f616b BR |
1039 | ret = -errno; |
1040 | } | |
1041 | } else { | |
8d6d89cb BR |
1042 | ret = -errno; |
1043 | } | |
cf7f616b | 1044 | |
8d6d89cb BR |
1045 | if (glfs_close(fd) != 0) { |
1046 | ret = -errno; | |
1047 | } | |
1048 | } | |
1049 | out: | |
90c772de | 1050 | g_free(tmp); |
7edac2dd | 1051 | qapi_free_BlockdevOptionsGluster(gconf); |
6349c154 | 1052 | glfs_clear_preopened(glfs); |
8d6d89cb BR |
1053 | return ret; |
1054 | } | |
1055 | ||
15744b0b | 1056 | static coroutine_fn int qemu_gluster_co_rw(BlockDriverState *bs, |
f70c50c8 PKK |
1057 | int64_t sector_num, int nb_sectors, |
1058 | QEMUIOVector *qiov, int write) | |
8d6d89cb BR |
1059 | { |
1060 | int ret; | |
c833d1e8 | 1061 | GlusterAIOCB acb; |
8d6d89cb | 1062 | BDRVGlusterState *s = bs->opaque; |
15744b0b BR |
1063 | size_t size = nb_sectors * BDRV_SECTOR_SIZE; |
1064 | off_t offset = sector_num * BDRV_SECTOR_SIZE; | |
8d6d89cb | 1065 | |
c833d1e8 PB |
1066 | acb.size = size; |
1067 | acb.ret = 0; | |
1068 | acb.coroutine = qemu_coroutine_self(); | |
1069 | acb.aio_context = bdrv_get_aio_context(bs); | |
8d6d89cb BR |
1070 | |
1071 | if (write) { | |
1072 | ret = glfs_pwritev_async(s->fd, qiov->iov, qiov->niov, offset, 0, | |
f70c50c8 | 1073 | gluster_finish_aiocb, &acb); |
8d6d89cb BR |
1074 | } else { |
1075 | ret = glfs_preadv_async(s->fd, qiov->iov, qiov->niov, offset, 0, | |
f70c50c8 | 1076 | gluster_finish_aiocb, &acb); |
8d6d89cb BR |
1077 | } |
1078 | ||
1079 | if (ret < 0) { | |
c833d1e8 | 1080 | return -errno; |
8d6d89cb | 1081 | } |
15744b0b BR |
1082 | |
1083 | qemu_coroutine_yield(); | |
c833d1e8 | 1084 | return acb.ret; |
8d6d89cb BR |
1085 | } |
1086 | ||
42ec24e2 PB |
1087 | static int qemu_gluster_truncate(BlockDriverState *bs, int64_t offset) |
1088 | { | |
1089 | int ret; | |
1090 | BDRVGlusterState *s = bs->opaque; | |
1091 | ||
1092 | ret = glfs_ftruncate(s->fd, offset); | |
1093 | if (ret < 0) { | |
1094 | return -errno; | |
1095 | } | |
1096 | ||
1097 | return 0; | |
1098 | } | |
1099 | ||
15744b0b | 1100 | static coroutine_fn int qemu_gluster_co_readv(BlockDriverState *bs, |
f70c50c8 PKK |
1101 | int64_t sector_num, |
1102 | int nb_sectors, | |
1103 | QEMUIOVector *qiov) | |
8d6d89cb | 1104 | { |
15744b0b | 1105 | return qemu_gluster_co_rw(bs, sector_num, nb_sectors, qiov, 0); |
8d6d89cb BR |
1106 | } |
1107 | ||
15744b0b | 1108 | static coroutine_fn int qemu_gluster_co_writev(BlockDriverState *bs, |
f70c50c8 PKK |
1109 | int64_t sector_num, |
1110 | int nb_sectors, | |
1111 | QEMUIOVector *qiov) | |
8d6d89cb | 1112 | { |
15744b0b | 1113 | return qemu_gluster_co_rw(bs, sector_num, nb_sectors, qiov, 1); |
8d6d89cb BR |
1114 | } |
1115 | ||
5d4343e6 JC |
1116 | static void qemu_gluster_close(BlockDriverState *bs) |
1117 | { | |
1118 | BDRVGlusterState *s = bs->opaque; | |
1119 | ||
e9db8ff3 | 1120 | g_free(s->logfile); |
5d4343e6 JC |
1121 | if (s->fd) { |
1122 | glfs_close(s->fd); | |
1123 | s->fd = NULL; | |
1124 | } | |
6349c154 | 1125 | glfs_clear_preopened(s->glfs); |
5d4343e6 JC |
1126 | } |
1127 | ||
15744b0b | 1128 | static coroutine_fn int qemu_gluster_co_flush_to_disk(BlockDriverState *bs) |
8d6d89cb BR |
1129 | { |
1130 | int ret; | |
c833d1e8 | 1131 | GlusterAIOCB acb; |
8d6d89cb BR |
1132 | BDRVGlusterState *s = bs->opaque; |
1133 | ||
c833d1e8 PB |
1134 | acb.size = 0; |
1135 | acb.ret = 0; | |
1136 | acb.coroutine = qemu_coroutine_self(); | |
1137 | acb.aio_context = bdrv_get_aio_context(bs); | |
8d6d89cb | 1138 | |
c833d1e8 | 1139 | ret = glfs_fsync_async(s->fd, gluster_finish_aiocb, &acb); |
8d6d89cb | 1140 | if (ret < 0) { |
d85fa9eb JC |
1141 | ret = -errno; |
1142 | goto error; | |
8d6d89cb | 1143 | } |
15744b0b BR |
1144 | |
1145 | qemu_coroutine_yield(); | |
d85fa9eb JC |
1146 | if (acb.ret < 0) { |
1147 | ret = acb.ret; | |
1148 | goto error; | |
1149 | } | |
1150 | ||
c833d1e8 | 1151 | return acb.ret; |
d85fa9eb JC |
1152 | |
1153 | error: | |
1154 | /* Some versions of Gluster (3.5.6 -> 3.5.8?) will not retain its cache | |
1155 | * after a fsync failure, so we have no way of allowing the guest to safely | |
1156 | * continue. Gluster versions prior to 3.5.6 don't retain the cache | |
1157 | * either, but will invalidate the fd on error, so this is again our only | |
1158 | * option. | |
1159 | * | |
1160 | * The 'resync-failed-syncs-after-fsync' xlator option for the | |
1161 | * write-behind cache will cause later gluster versions to retain its | |
1162 | * cache after error, so long as the fd remains open. However, we | |
1163 | * currently have no way of knowing if this option is supported. | |
1164 | * | |
1165 | * TODO: Once gluster provides a way for us to determine if the option | |
1166 | * is supported, bypass the closure and setting drv to NULL. */ | |
1167 | qemu_gluster_close(bs); | |
1168 | bs->drv = NULL; | |
1169 | return ret; | |
8d6d89cb BR |
1170 | } |
1171 | ||
0c14fb47 | 1172 | #ifdef CONFIG_GLUSTERFS_DISCARD |
1014170b EB |
1173 | static coroutine_fn int qemu_gluster_co_pdiscard(BlockDriverState *bs, |
1174 | int64_t offset, int size) | |
0c14fb47 BR |
1175 | { |
1176 | int ret; | |
c833d1e8 | 1177 | GlusterAIOCB acb; |
0c14fb47 | 1178 | BDRVGlusterState *s = bs->opaque; |
0c14fb47 | 1179 | |
c833d1e8 PB |
1180 | acb.size = 0; |
1181 | acb.ret = 0; | |
1182 | acb.coroutine = qemu_coroutine_self(); | |
1183 | acb.aio_context = bdrv_get_aio_context(bs); | |
0c14fb47 | 1184 | |
c833d1e8 | 1185 | ret = glfs_discard_async(s->fd, offset, size, gluster_finish_aiocb, &acb); |
0c14fb47 | 1186 | if (ret < 0) { |
c833d1e8 | 1187 | return -errno; |
0c14fb47 | 1188 | } |
15744b0b BR |
1189 | |
1190 | qemu_coroutine_yield(); | |
c833d1e8 | 1191 | return acb.ret; |
0c14fb47 BR |
1192 | } |
1193 | #endif | |
1194 | ||
8d6d89cb BR |
1195 | static int64_t qemu_gluster_getlength(BlockDriverState *bs) |
1196 | { | |
1197 | BDRVGlusterState *s = bs->opaque; | |
1198 | int64_t ret; | |
1199 | ||
1200 | ret = glfs_lseek(s->fd, 0, SEEK_END); | |
1201 | if (ret < 0) { | |
1202 | return -errno; | |
1203 | } else { | |
1204 | return ret; | |
1205 | } | |
1206 | } | |
1207 | ||
1208 | static int64_t qemu_gluster_allocated_file_size(BlockDriverState *bs) | |
1209 | { | |
1210 | BDRVGlusterState *s = bs->opaque; | |
1211 | struct stat st; | |
1212 | int ret; | |
1213 | ||
1214 | ret = glfs_fstat(s->fd, &st); | |
1215 | if (ret < 0) { | |
1216 | return -errno; | |
1217 | } else { | |
1218 | return st.st_blocks * 512; | |
1219 | } | |
1220 | } | |
1221 | ||
8ab6feec KW |
1222 | static int qemu_gluster_has_zero_init(BlockDriverState *bs) |
1223 | { | |
1224 | /* GlusterFS volume could be backed by a block device */ | |
1225 | return 0; | |
1226 | } | |
1227 | ||
947eb203 NV |
1228 | /* |
1229 | * Find allocation range in @bs around offset @start. | |
1230 | * May change underlying file descriptor's file offset. | |
1231 | * If @start is not in a hole, store @start in @data, and the | |
1232 | * beginning of the next hole in @hole, and return 0. | |
1233 | * If @start is in a non-trailing hole, store @start in @hole and the | |
1234 | * beginning of the next non-hole in @data, and return 0. | |
1235 | * If @start is in a trailing hole or beyond EOF, return -ENXIO. | |
1236 | * If we can't find out, return a negative errno other than -ENXIO. | |
1237 | * | |
c1bb86cd | 1238 | * (Shamefully copied from file-posix.c, only miniscule adaptions.) |
947eb203 NV |
1239 | */ |
1240 | static int find_allocation(BlockDriverState *bs, off_t start, | |
1241 | off_t *data, off_t *hole) | |
1242 | { | |
1243 | BDRVGlusterState *s = bs->opaque; | |
947eb203 NV |
1244 | |
1245 | if (!s->supports_seek_data) { | |
d9b78974 | 1246 | goto exit; |
947eb203 NV |
1247 | } |
1248 | ||
d9b78974 JC |
1249 | #if defined SEEK_HOLE && defined SEEK_DATA |
1250 | off_t offs; | |
1251 | ||
947eb203 NV |
1252 | /* |
1253 | * SEEK_DATA cases: | |
1254 | * D1. offs == start: start is in data | |
1255 | * D2. offs > start: start is in a hole, next data at offs | |
1256 | * D3. offs < 0, errno = ENXIO: either start is in a trailing hole | |
1257 | * or start is beyond EOF | |
1258 | * If the latter happens, the file has been truncated behind | |
1259 | * our back since we opened it. All bets are off then. | |
1260 | * Treating like a trailing hole is simplest. | |
1261 | * D4. offs < 0, errno != ENXIO: we learned nothing | |
1262 | */ | |
1263 | offs = glfs_lseek(s->fd, start, SEEK_DATA); | |
1264 | if (offs < 0) { | |
1265 | return -errno; /* D3 or D4 */ | |
1266 | } | |
1267 | assert(offs >= start); | |
1268 | ||
1269 | if (offs > start) { | |
1270 | /* D2: in hole, next data at offs */ | |
1271 | *hole = start; | |
1272 | *data = offs; | |
1273 | return 0; | |
1274 | } | |
1275 | ||
1276 | /* D1: in data, end not yet known */ | |
1277 | ||
1278 | /* | |
1279 | * SEEK_HOLE cases: | |
1280 | * H1. offs == start: start is in a hole | |
1281 | * If this happens here, a hole has been dug behind our back | |
1282 | * since the previous lseek(). | |
1283 | * H2. offs > start: either start is in data, next hole at offs, | |
1284 | * or start is in trailing hole, EOF at offs | |
1285 | * Linux treats trailing holes like any other hole: offs == | |
1286 | * start. Solaris seeks to EOF instead: offs > start (blech). | |
1287 | * If that happens here, a hole has been dug behind our back | |
1288 | * since the previous lseek(). | |
1289 | * H3. offs < 0, errno = ENXIO: start is beyond EOF | |
1290 | * If this happens, the file has been truncated behind our | |
1291 | * back since we opened it. Treat it like a trailing hole. | |
1292 | * H4. offs < 0, errno != ENXIO: we learned nothing | |
1293 | * Pretend we know nothing at all, i.e. "forget" about D1. | |
1294 | */ | |
1295 | offs = glfs_lseek(s->fd, start, SEEK_HOLE); | |
1296 | if (offs < 0) { | |
1297 | return -errno; /* D1 and (H3 or H4) */ | |
1298 | } | |
1299 | assert(offs >= start); | |
1300 | ||
1301 | if (offs > start) { | |
1302 | /* | |
1303 | * D1 and H2: either in data, next hole at offs, or it was in | |
1304 | * data but is now in a trailing hole. In the latter case, | |
1305 | * all bets are off. Treating it as if it there was data all | |
1306 | * the way to EOF is safe, so simply do that. | |
1307 | */ | |
1308 | *data = start; | |
1309 | *hole = offs; | |
1310 | return 0; | |
1311 | } | |
1312 | ||
1313 | /* D1 and H1 */ | |
1314 | return -EBUSY; | |
d9b78974 JC |
1315 | #endif |
1316 | ||
1317 | exit: | |
1318 | return -ENOTSUP; | |
947eb203 NV |
1319 | } |
1320 | ||
1321 | /* | |
1322 | * Returns the allocation status of the specified sectors. | |
1323 | * | |
1324 | * If 'sector_num' is beyond the end of the disk image the return value is 0 | |
1325 | * and 'pnum' is set to 0. | |
1326 | * | |
1327 | * 'pnum' is set to the number of sectors (including and immediately following | |
1328 | * the specified sector) that are known to be in the same | |
1329 | * allocated/unallocated state. | |
1330 | * | |
1331 | * 'nb_sectors' is the max value 'pnum' should be set to. If nb_sectors goes | |
1332 | * beyond the end of the disk image it will be clamped. | |
1333 | * | |
c1bb86cd | 1334 | * (Based on raw_co_get_block_status() from file-posix.c.) |
947eb203 NV |
1335 | */ |
1336 | static int64_t coroutine_fn qemu_gluster_co_get_block_status( | |
1337 | BlockDriverState *bs, int64_t sector_num, int nb_sectors, int *pnum, | |
1338 | BlockDriverState **file) | |
1339 | { | |
1340 | BDRVGlusterState *s = bs->opaque; | |
1341 | off_t start, data = 0, hole = 0; | |
1342 | int64_t total_size; | |
1343 | int ret = -EINVAL; | |
1344 | ||
1345 | if (!s->fd) { | |
1346 | return ret; | |
1347 | } | |
1348 | ||
1349 | start = sector_num * BDRV_SECTOR_SIZE; | |
1350 | total_size = bdrv_getlength(bs); | |
1351 | if (total_size < 0) { | |
1352 | return total_size; | |
1353 | } else if (start >= total_size) { | |
1354 | *pnum = 0; | |
1355 | return 0; | |
1356 | } else if (start + nb_sectors * BDRV_SECTOR_SIZE > total_size) { | |
1357 | nb_sectors = DIV_ROUND_UP(total_size - start, BDRV_SECTOR_SIZE); | |
1358 | } | |
1359 | ||
1360 | ret = find_allocation(bs, start, &data, &hole); | |
1361 | if (ret == -ENXIO) { | |
1362 | /* Trailing hole */ | |
1363 | *pnum = nb_sectors; | |
1364 | ret = BDRV_BLOCK_ZERO; | |
1365 | } else if (ret < 0) { | |
1366 | /* No info available, so pretend there are no holes */ | |
1367 | *pnum = nb_sectors; | |
1368 | ret = BDRV_BLOCK_DATA; | |
1369 | } else if (data == start) { | |
1370 | /* On a data extent, compute sectors to the end of the extent, | |
1371 | * possibly including a partial sector at EOF. */ | |
1372 | *pnum = MIN(nb_sectors, DIV_ROUND_UP(hole - start, BDRV_SECTOR_SIZE)); | |
1373 | ret = BDRV_BLOCK_DATA; | |
1374 | } else { | |
1375 | /* On a hole, compute sectors to the beginning of the next extent. */ | |
1376 | assert(hole == start); | |
1377 | *pnum = MIN(nb_sectors, (data - start) / BDRV_SECTOR_SIZE); | |
1378 | ret = BDRV_BLOCK_ZERO; | |
1379 | } | |
1380 | ||
1381 | *file = bs; | |
1382 | ||
1383 | return ret | BDRV_BLOCK_OFFSET_VALID | start; | |
1384 | } | |
1385 | ||
1386 | ||
8d6d89cb BR |
1387 | static BlockDriver bdrv_gluster = { |
1388 | .format_name = "gluster", | |
1389 | .protocol_name = "gluster", | |
1390 | .instance_size = sizeof(BDRVGlusterState), | |
6c7189bb | 1391 | .bdrv_needs_filename = false, |
8d6d89cb | 1392 | .bdrv_file_open = qemu_gluster_open, |
adccfbcd JC |
1393 | .bdrv_reopen_prepare = qemu_gluster_reopen_prepare, |
1394 | .bdrv_reopen_commit = qemu_gluster_reopen_commit, | |
1395 | .bdrv_reopen_abort = qemu_gluster_reopen_abort, | |
8d6d89cb | 1396 | .bdrv_close = qemu_gluster_close, |
c282e1fd | 1397 | .bdrv_create = qemu_gluster_create, |
8d6d89cb BR |
1398 | .bdrv_getlength = qemu_gluster_getlength, |
1399 | .bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size, | |
42ec24e2 | 1400 | .bdrv_truncate = qemu_gluster_truncate, |
15744b0b BR |
1401 | .bdrv_co_readv = qemu_gluster_co_readv, |
1402 | .bdrv_co_writev = qemu_gluster_co_writev, | |
1403 | .bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk, | |
8ab6feec | 1404 | .bdrv_has_zero_init = qemu_gluster_has_zero_init, |
0c14fb47 | 1405 | #ifdef CONFIG_GLUSTERFS_DISCARD |
1014170b | 1406 | .bdrv_co_pdiscard = qemu_gluster_co_pdiscard, |
7c815372 BR |
1407 | #endif |
1408 | #ifdef CONFIG_GLUSTERFS_ZEROFILL | |
e88a36eb | 1409 | .bdrv_co_pwrite_zeroes = qemu_gluster_co_pwrite_zeroes, |
0c14fb47 | 1410 | #endif |
947eb203 | 1411 | .bdrv_co_get_block_status = qemu_gluster_co_get_block_status, |
90c772de | 1412 | .create_opts = &qemu_gluster_create_opts, |
8d6d89cb BR |
1413 | }; |
1414 | ||
1415 | static BlockDriver bdrv_gluster_tcp = { | |
1416 | .format_name = "gluster", | |
1417 | .protocol_name = "gluster+tcp", | |
1418 | .instance_size = sizeof(BDRVGlusterState), | |
6c7189bb | 1419 | .bdrv_needs_filename = false, |
8d6d89cb | 1420 | .bdrv_file_open = qemu_gluster_open, |
adccfbcd JC |
1421 | .bdrv_reopen_prepare = qemu_gluster_reopen_prepare, |
1422 | .bdrv_reopen_commit = qemu_gluster_reopen_commit, | |
1423 | .bdrv_reopen_abort = qemu_gluster_reopen_abort, | |
8d6d89cb | 1424 | .bdrv_close = qemu_gluster_close, |
c282e1fd | 1425 | .bdrv_create = qemu_gluster_create, |
8d6d89cb BR |
1426 | .bdrv_getlength = qemu_gluster_getlength, |
1427 | .bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size, | |
42ec24e2 | 1428 | .bdrv_truncate = qemu_gluster_truncate, |
15744b0b BR |
1429 | .bdrv_co_readv = qemu_gluster_co_readv, |
1430 | .bdrv_co_writev = qemu_gluster_co_writev, | |
1431 | .bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk, | |
8ab6feec | 1432 | .bdrv_has_zero_init = qemu_gluster_has_zero_init, |
0c14fb47 | 1433 | #ifdef CONFIG_GLUSTERFS_DISCARD |
1014170b | 1434 | .bdrv_co_pdiscard = qemu_gluster_co_pdiscard, |
7c815372 BR |
1435 | #endif |
1436 | #ifdef CONFIG_GLUSTERFS_ZEROFILL | |
e88a36eb | 1437 | .bdrv_co_pwrite_zeroes = qemu_gluster_co_pwrite_zeroes, |
0c14fb47 | 1438 | #endif |
947eb203 | 1439 | .bdrv_co_get_block_status = qemu_gluster_co_get_block_status, |
90c772de | 1440 | .create_opts = &qemu_gluster_create_opts, |
8d6d89cb BR |
1441 | }; |
1442 | ||
1443 | static BlockDriver bdrv_gluster_unix = { | |
1444 | .format_name = "gluster", | |
1445 | .protocol_name = "gluster+unix", | |
1446 | .instance_size = sizeof(BDRVGlusterState), | |
030be321 | 1447 | .bdrv_needs_filename = true, |
8d6d89cb | 1448 | .bdrv_file_open = qemu_gluster_open, |
adccfbcd JC |
1449 | .bdrv_reopen_prepare = qemu_gluster_reopen_prepare, |
1450 | .bdrv_reopen_commit = qemu_gluster_reopen_commit, | |
1451 | .bdrv_reopen_abort = qemu_gluster_reopen_abort, | |
8d6d89cb | 1452 | .bdrv_close = qemu_gluster_close, |
c282e1fd | 1453 | .bdrv_create = qemu_gluster_create, |
8d6d89cb BR |
1454 | .bdrv_getlength = qemu_gluster_getlength, |
1455 | .bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size, | |
42ec24e2 | 1456 | .bdrv_truncate = qemu_gluster_truncate, |
15744b0b BR |
1457 | .bdrv_co_readv = qemu_gluster_co_readv, |
1458 | .bdrv_co_writev = qemu_gluster_co_writev, | |
1459 | .bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk, | |
8ab6feec | 1460 | .bdrv_has_zero_init = qemu_gluster_has_zero_init, |
0c14fb47 | 1461 | #ifdef CONFIG_GLUSTERFS_DISCARD |
1014170b | 1462 | .bdrv_co_pdiscard = qemu_gluster_co_pdiscard, |
7c815372 BR |
1463 | #endif |
1464 | #ifdef CONFIG_GLUSTERFS_ZEROFILL | |
e88a36eb | 1465 | .bdrv_co_pwrite_zeroes = qemu_gluster_co_pwrite_zeroes, |
0c14fb47 | 1466 | #endif |
947eb203 | 1467 | .bdrv_co_get_block_status = qemu_gluster_co_get_block_status, |
90c772de | 1468 | .create_opts = &qemu_gluster_create_opts, |
8d6d89cb BR |
1469 | }; |
1470 | ||
0552ff24 PKK |
1471 | /* rdma is deprecated (actually never supported for volfile fetch). |
1472 | * Let's maintain it for the protocol compatibility, to make sure things | |
1473 | * won't break immediately. For now, gluster+rdma will fall back to gluster+tcp | |
1474 | * protocol with a warning. | |
1475 | * TODO: remove gluster+rdma interface support | |
1476 | */ | |
8d6d89cb BR |
1477 | static BlockDriver bdrv_gluster_rdma = { |
1478 | .format_name = "gluster", | |
1479 | .protocol_name = "gluster+rdma", | |
1480 | .instance_size = sizeof(BDRVGlusterState), | |
030be321 | 1481 | .bdrv_needs_filename = true, |
8d6d89cb | 1482 | .bdrv_file_open = qemu_gluster_open, |
adccfbcd JC |
1483 | .bdrv_reopen_prepare = qemu_gluster_reopen_prepare, |
1484 | .bdrv_reopen_commit = qemu_gluster_reopen_commit, | |
1485 | .bdrv_reopen_abort = qemu_gluster_reopen_abort, | |
8d6d89cb | 1486 | .bdrv_close = qemu_gluster_close, |
c282e1fd | 1487 | .bdrv_create = qemu_gluster_create, |
8d6d89cb BR |
1488 | .bdrv_getlength = qemu_gluster_getlength, |
1489 | .bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size, | |
42ec24e2 | 1490 | .bdrv_truncate = qemu_gluster_truncate, |
15744b0b BR |
1491 | .bdrv_co_readv = qemu_gluster_co_readv, |
1492 | .bdrv_co_writev = qemu_gluster_co_writev, | |
1493 | .bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk, | |
8ab6feec | 1494 | .bdrv_has_zero_init = qemu_gluster_has_zero_init, |
0c14fb47 | 1495 | #ifdef CONFIG_GLUSTERFS_DISCARD |
1014170b | 1496 | .bdrv_co_pdiscard = qemu_gluster_co_pdiscard, |
7c815372 BR |
1497 | #endif |
1498 | #ifdef CONFIG_GLUSTERFS_ZEROFILL | |
e88a36eb | 1499 | .bdrv_co_pwrite_zeroes = qemu_gluster_co_pwrite_zeroes, |
0c14fb47 | 1500 | #endif |
947eb203 | 1501 | .bdrv_co_get_block_status = qemu_gluster_co_get_block_status, |
90c772de | 1502 | .create_opts = &qemu_gluster_create_opts, |
8d6d89cb BR |
1503 | }; |
1504 | ||
1505 | static void bdrv_gluster_init(void) | |
1506 | { | |
1507 | bdrv_register(&bdrv_gluster_rdma); | |
1508 | bdrv_register(&bdrv_gluster_unix); | |
1509 | bdrv_register(&bdrv_gluster_tcp); | |
1510 | bdrv_register(&bdrv_gluster); | |
1511 | } | |
1512 | ||
1513 | block_init(bdrv_gluster_init); |