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Commit | Line | Data |
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f27aaf4b CB |
1 | /* |
2 | * QEMU Block driver for RADOS (Ceph) | |
3 | * | |
ad32e9c0 JD |
4 | * Copyright (C) 2010-2011 Christian Brunner <chb@muc.de>, |
5 | * Josh Durgin <josh.durgin@dreamhost.com> | |
f27aaf4b CB |
6 | * |
7 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
8 | * the COPYING file in the top-level directory. | |
9 | * | |
6b620ca3 PB |
10 | * Contributions after 2012-01-13 are licensed under the terms of the |
11 | * GNU GPL, version 2 or (at your option) any later version. | |
f27aaf4b CB |
12 | */ |
13 | ||
80c71a24 | 14 | #include "qemu/osdep.h" |
ad32e9c0 | 15 | |
2836284d | 16 | #include <rbd/librbd.h> |
da34e65c | 17 | #include "qapi/error.h" |
1de7afc9 | 18 | #include "qemu/error-report.h" |
0b8fa32f | 19 | #include "qemu/module.h" |
922a01a0 | 20 | #include "qemu/option.h" |
737e150e | 21 | #include "block/block_int.h" |
609f45ea | 22 | #include "block/qdict.h" |
60390a21 | 23 | #include "crypto/secret.h" |
f348b6d1 | 24 | #include "qemu/cutils.h" |
e4ec5ad4 | 25 | #include "sysemu/replay.h" |
c7cacb3e | 26 | #include "qapi/qmp/qstring.h" |
452fcdbc | 27 | #include "qapi/qmp/qdict.h" |
e98c6961 | 28 | #include "qapi/qmp/qjson.h" |
47e6b297 | 29 | #include "qapi/qmp/qlist.h" |
4bfb2741 KW |
30 | #include "qapi/qobject-input-visitor.h" |
31 | #include "qapi/qapi-visit-block-core.h" | |
f27aaf4b | 32 | |
f27aaf4b CB |
33 | /* |
34 | * When specifying the image filename use: | |
35 | * | |
fab5cf59 | 36 | * rbd:poolname/devicename[@snapshotname][:option1=value1[:option2=value2...]] |
f27aaf4b | 37 | * |
9e1fbcde | 38 | * poolname must be the name of an existing rados pool. |
f27aaf4b | 39 | * |
9e1fbcde | 40 | * devicename is the name of the rbd image. |
f27aaf4b | 41 | * |
9e1fbcde SW |
42 | * Each option given is used to configure rados, and may be any valid |
43 | * Ceph option, "id", or "conf". | |
fab5cf59 | 44 | * |
9e1fbcde SW |
45 | * The "id" option indicates what user we should authenticate as to |
46 | * the Ceph cluster. If it is excluded we will use the Ceph default | |
47 | * (normally 'admin'). | |
f27aaf4b | 48 | * |
9e1fbcde SW |
49 | * The "conf" option specifies a Ceph configuration file to read. If |
50 | * it is not specified, we will read from the default Ceph locations | |
51 | * (e.g., /etc/ceph/ceph.conf). To avoid reading _any_ configuration | |
52 | * file, specify conf=/dev/null. | |
f27aaf4b | 53 | * |
9e1fbcde SW |
54 | * Configuration values containing :, @, or = can be escaped with a |
55 | * leading "\". | |
f27aaf4b CB |
56 | */ |
57 | ||
58 | #define OBJ_MAX_SIZE (1UL << OBJ_DEFAULT_OBJ_ORDER) | |
59 | ||
ad32e9c0 JD |
60 | #define RBD_MAX_SNAPS 100 |
61 | ||
42e4ac9e OO |
62 | #define RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN 8 |
63 | ||
64 | static const char rbd_luks_header_verification[ | |
65 | RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN] = { | |
66 | 'L', 'U', 'K', 'S', 0xBA, 0xBE, 0, 1 | |
67 | }; | |
68 | ||
69 | static const char rbd_luks2_header_verification[ | |
70 | RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN] = { | |
71 | 'L', 'U', 'K', 'S', 0xBA, 0xBE, 0, 2 | |
72 | }; | |
73 | ||
787f3133 JD |
74 | typedef enum { |
75 | RBD_AIO_READ, | |
76 | RBD_AIO_WRITE, | |
dc7588c1 | 77 | RBD_AIO_DISCARD, |
c56ac27d PL |
78 | RBD_AIO_FLUSH, |
79 | RBD_AIO_WRITE_ZEROES | |
787f3133 JD |
80 | } RBDAIOCmd; |
81 | ||
f27aaf4b | 82 | typedef struct BDRVRBDState { |
ad32e9c0 JD |
83 | rados_t cluster; |
84 | rados_ioctx_t io_ctx; | |
85 | rbd_image_t image; | |
80b61a27 | 86 | char *image_name; |
ad32e9c0 | 87 | char *snap; |
19ae9ae0 | 88 | char *namespace; |
d24f8023 | 89 | uint64_t image_size; |
832a93dc | 90 | uint64_t object_size; |
f27aaf4b CB |
91 | } BDRVRBDState; |
92 | ||
c3e5fac5 PL |
93 | typedef struct RBDTask { |
94 | BlockDriverState *bs; | |
95 | Coroutine *co; | |
96 | bool complete; | |
97 | int64_t ret; | |
98 | } RBDTask; | |
99 | ||
aa045c2d KW |
100 | static int qemu_rbd_connect(rados_t *cluster, rados_ioctx_t *io_ctx, |
101 | BlockdevOptionsRbd *opts, bool cache, | |
102 | const char *keypairs, const char *secretid, | |
103 | Error **errp); | |
104 | ||
2b99cfce CK |
105 | static char *qemu_rbd_strchr(char *src, char delim) |
106 | { | |
107 | char *p; | |
108 | ||
109 | for (p = src; *p; ++p) { | |
110 | if (*p == delim) { | |
111 | return p; | |
112 | } | |
113 | if (*p == '\\' && p[1] != '\0') { | |
114 | ++p; | |
115 | } | |
116 | } | |
117 | ||
118 | return NULL; | |
119 | } | |
120 | ||
121 | ||
730b00bb | 122 | static char *qemu_rbd_next_tok(char *src, char delim, char **p) |
f27aaf4b | 123 | { |
f27aaf4b CB |
124 | char *end; |
125 | ||
126 | *p = NULL; | |
127 | ||
2b99cfce CK |
128 | end = qemu_rbd_strchr(src, delim); |
129 | if (end) { | |
8efb339d MA |
130 | *p = end + 1; |
131 | *end = '\0'; | |
132 | } | |
7830f909 | 133 | return src; |
f27aaf4b CB |
134 | } |
135 | ||
16a06b24 SW |
136 | static void qemu_rbd_unescape(char *src) |
137 | { | |
138 | char *p; | |
139 | ||
140 | for (p = src; *src; ++src, ++p) { | |
141 | if (*src == '\\' && src[1] != '\0') { | |
142 | src++; | |
143 | } | |
144 | *p = *src; | |
145 | } | |
146 | *p = '\0'; | |
147 | } | |
148 | ||
c7cacb3e JC |
149 | static void qemu_rbd_parse_filename(const char *filename, QDict *options, |
150 | Error **errp) | |
f27aaf4b CB |
151 | { |
152 | const char *start; | |
e98c6961 EB |
153 | char *p, *buf; |
154 | QList *keypairs = NULL; | |
19ae9ae0 | 155 | char *found_str, *image_name; |
f27aaf4b CB |
156 | |
157 | if (!strstart(filename, "rbd:", &start)) { | |
d61563b2 | 158 | error_setg(errp, "File name must start with 'rbd:'"); |
c7cacb3e | 159 | return; |
f27aaf4b CB |
160 | } |
161 | ||
7267c094 | 162 | buf = g_strdup(start); |
f27aaf4b CB |
163 | p = buf; |
164 | ||
730b00bb | 165 | found_str = qemu_rbd_next_tok(p, '/', &p); |
7830f909 | 166 | if (!p) { |
7830f909 | 167 | error_setg(errp, "Pool name is required"); |
f27aaf4b CB |
168 | goto done; |
169 | } | |
7830f909 | 170 | qemu_rbd_unescape(found_str); |
46f5ac20 | 171 | qdict_put_str(options, "pool", found_str); |
fab5cf59 | 172 | |
2b99cfce | 173 | if (qemu_rbd_strchr(p, '@')) { |
19ae9ae0 | 174 | image_name = qemu_rbd_next_tok(p, '@', &p); |
7830f909 | 175 | |
730b00bb | 176 | found_str = qemu_rbd_next_tok(p, ':', &p); |
7830f909 | 177 | qemu_rbd_unescape(found_str); |
46f5ac20 | 178 | qdict_put_str(options, "snapshot", found_str); |
fab5cf59 | 179 | } else { |
19ae9ae0 FF |
180 | image_name = qemu_rbd_next_tok(p, ':', &p); |
181 | } | |
182 | /* Check for namespace in the image_name */ | |
2b99cfce | 183 | if (qemu_rbd_strchr(image_name, '/')) { |
19ae9ae0 | 184 | found_str = qemu_rbd_next_tok(image_name, '/', &image_name); |
7830f909 | 185 | qemu_rbd_unescape(found_str); |
19ae9ae0 FF |
186 | qdict_put_str(options, "namespace", found_str); |
187 | } else { | |
188 | qdict_put_str(options, "namespace", ""); | |
f27aaf4b | 189 | } |
19ae9ae0 FF |
190 | qemu_rbd_unescape(image_name); |
191 | qdict_put_str(options, "image", image_name); | |
7830f909 | 192 | if (!p) { |
f27aaf4b CB |
193 | goto done; |
194 | } | |
195 | ||
c7cacb3e JC |
196 | /* The following are essentially all key/value pairs, and we treat |
197 | * 'id' and 'conf' a bit special. Key/value pairs may be in any order. */ | |
198 | while (p) { | |
199 | char *name, *value; | |
730b00bb | 200 | name = qemu_rbd_next_tok(p, '=', &p); |
c7cacb3e JC |
201 | if (!p) { |
202 | error_setg(errp, "conf option %s has no value", name); | |
203 | break; | |
7c7e9df0 | 204 | } |
c7cacb3e JC |
205 | |
206 | qemu_rbd_unescape(name); | |
207 | ||
730b00bb | 208 | value = qemu_rbd_next_tok(p, ':', &p); |
c7cacb3e JC |
209 | qemu_rbd_unescape(value); |
210 | ||
211 | if (!strcmp(name, "conf")) { | |
46f5ac20 | 212 | qdict_put_str(options, "conf", value); |
c7cacb3e | 213 | } else if (!strcmp(name, "id")) { |
46f5ac20 | 214 | qdict_put_str(options, "user", value); |
c7cacb3e | 215 | } else { |
e98c6961 EB |
216 | /* |
217 | * We pass these internally to qemu_rbd_set_keypairs(), so | |
218 | * we can get away with the simpler list of [ "key1", | |
219 | * "value1", "key2", "value2" ] rather than a raw dict | |
220 | * { "key1": "value1", "key2": "value2" } where we can't | |
221 | * guarantee order, or even a more correct but complex | |
222 | * [ { "key1": "value1" }, { "key2": "value2" } ] | |
223 | */ | |
224 | if (!keypairs) { | |
225 | keypairs = qlist_new(); | |
c7cacb3e | 226 | } |
46f5ac20 EB |
227 | qlist_append_str(keypairs, name); |
228 | qlist_append_str(keypairs, value); | |
c7cacb3e | 229 | } |
7c7e9df0 | 230 | } |
c7cacb3e | 231 | |
e98c6961 EB |
232 | if (keypairs) { |
233 | qdict_put(options, "=keyvalue-pairs", | |
eab3a467 | 234 | qstring_from_gstring(qobject_to_json(QOBJECT(keypairs)))); |
c7cacb3e JC |
235 | } |
236 | ||
c7cacb3e | 237 | done: |
c7cacb3e | 238 | g_free(buf); |
cb3e7f08 | 239 | qobject_unref(keypairs); |
c7cacb3e | 240 | return; |
7c7e9df0 SW |
241 | } |
242 | ||
d083f954 | 243 | static int qemu_rbd_set_auth(rados_t cluster, BlockdevOptionsRbd *opts, |
60390a21 DB |
244 | Error **errp) |
245 | { | |
d083f954 | 246 | char *key, *acr; |
a3699de4 MA |
247 | int r; |
248 | GString *accu; | |
249 | RbdAuthModeList *auth; | |
250 | ||
d083f954 MA |
251 | if (opts->key_secret) { |
252 | key = qcrypto_secret_lookup_as_base64(opts->key_secret, errp); | |
253 | if (!key) { | |
254 | return -EIO; | |
255 | } | |
256 | r = rados_conf_set(cluster, "key", key); | |
257 | g_free(key); | |
258 | if (r < 0) { | |
259 | error_setg_errno(errp, -r, "Could not set 'key'"); | |
260 | return r; | |
a3699de4 | 261 | } |
60390a21 DB |
262 | } |
263 | ||
a3699de4 MA |
264 | if (opts->has_auth_client_required) { |
265 | accu = g_string_new(""); | |
266 | for (auth = opts->auth_client_required; auth; auth = auth->next) { | |
267 | if (accu->str[0]) { | |
268 | g_string_append_c(accu, ';'); | |
269 | } | |
270 | g_string_append(accu, RbdAuthMode_str(auth->value)); | |
271 | } | |
272 | acr = g_string_free(accu, FALSE); | |
273 | r = rados_conf_set(cluster, "auth_client_required", acr); | |
274 | g_free(acr); | |
275 | if (r < 0) { | |
276 | error_setg_errno(errp, -r, | |
277 | "Could not set 'auth_client_required'"); | |
278 | return r; | |
279 | } | |
280 | } | |
60390a21 DB |
281 | |
282 | return 0; | |
283 | } | |
284 | ||
e98c6961 | 285 | static int qemu_rbd_set_keypairs(rados_t cluster, const char *keypairs_json, |
c7cacb3e | 286 | Error **errp) |
fab5cf59 | 287 | { |
e98c6961 EB |
288 | QList *keypairs; |
289 | QString *name; | |
290 | QString *value; | |
291 | const char *key; | |
292 | size_t remaining; | |
fab5cf59 JD |
293 | int ret = 0; |
294 | ||
e98c6961 EB |
295 | if (!keypairs_json) { |
296 | return ret; | |
297 | } | |
7dc847eb HR |
298 | keypairs = qobject_to(QList, |
299 | qobject_from_json(keypairs_json, &error_abort)); | |
e98c6961 EB |
300 | remaining = qlist_size(keypairs) / 2; |
301 | assert(remaining); | |
302 | ||
303 | while (remaining--) { | |
7dc847eb HR |
304 | name = qobject_to(QString, qlist_pop(keypairs)); |
305 | value = qobject_to(QString, qlist_pop(keypairs)); | |
e98c6961 EB |
306 | assert(name && value); |
307 | key = qstring_get_str(name); | |
308 | ||
309 | ret = rados_conf_set(cluster, key, qstring_get_str(value)); | |
cb3e7f08 | 310 | qobject_unref(value); |
c7cacb3e | 311 | if (ret < 0) { |
e98c6961 | 312 | error_setg_errno(errp, -ret, "invalid conf option %s", key); |
cb3e7f08 | 313 | qobject_unref(name); |
c7cacb3e JC |
314 | ret = -EINVAL; |
315 | break; | |
fab5cf59 | 316 | } |
cb3e7f08 | 317 | qobject_unref(name); |
fab5cf59 JD |
318 | } |
319 | ||
cb3e7f08 | 320 | qobject_unref(keypairs); |
fab5cf59 JD |
321 | return ret; |
322 | } | |
323 | ||
42e4ac9e OO |
324 | #ifdef LIBRBD_SUPPORTS_ENCRYPTION |
325 | static int qemu_rbd_convert_luks_options( | |
326 | RbdEncryptionOptionsLUKSBase *luks_opts, | |
327 | char **passphrase, | |
328 | size_t *passphrase_len, | |
329 | Error **errp) | |
330 | { | |
331 | return qcrypto_secret_lookup(luks_opts->key_secret, (uint8_t **)passphrase, | |
332 | passphrase_len, errp); | |
333 | } | |
334 | ||
335 | static int qemu_rbd_convert_luks_create_options( | |
336 | RbdEncryptionCreateOptionsLUKSBase *luks_opts, | |
337 | rbd_encryption_algorithm_t *alg, | |
338 | char **passphrase, | |
339 | size_t *passphrase_len, | |
340 | Error **errp) | |
341 | { | |
342 | int r = 0; | |
343 | ||
344 | r = qemu_rbd_convert_luks_options( | |
345 | qapi_RbdEncryptionCreateOptionsLUKSBase_base(luks_opts), | |
346 | passphrase, passphrase_len, errp); | |
347 | if (r < 0) { | |
348 | return r; | |
349 | } | |
350 | ||
351 | if (luks_opts->has_cipher_alg) { | |
352 | switch (luks_opts->cipher_alg) { | |
353 | case QCRYPTO_CIPHER_ALG_AES_128: { | |
354 | *alg = RBD_ENCRYPTION_ALGORITHM_AES128; | |
355 | break; | |
356 | } | |
357 | case QCRYPTO_CIPHER_ALG_AES_256: { | |
358 | *alg = RBD_ENCRYPTION_ALGORITHM_AES256; | |
359 | break; | |
360 | } | |
361 | default: { | |
362 | r = -ENOTSUP; | |
363 | error_setg_errno(errp, -r, "unknown encryption algorithm: %u", | |
364 | luks_opts->cipher_alg); | |
365 | return r; | |
366 | } | |
367 | } | |
368 | } else { | |
369 | /* default alg */ | |
370 | *alg = RBD_ENCRYPTION_ALGORITHM_AES256; | |
371 | } | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | static int qemu_rbd_encryption_format(rbd_image_t image, | |
377 | RbdEncryptionCreateOptions *encrypt, | |
378 | Error **errp) | |
379 | { | |
380 | int r = 0; | |
381 | g_autofree char *passphrase = NULL; | |
382 | size_t passphrase_len; | |
383 | rbd_encryption_format_t format; | |
384 | rbd_encryption_options_t opts; | |
385 | rbd_encryption_luks1_format_options_t luks_opts; | |
386 | rbd_encryption_luks2_format_options_t luks2_opts; | |
387 | size_t opts_size; | |
388 | uint64_t raw_size, effective_size; | |
389 | ||
390 | r = rbd_get_size(image, &raw_size); | |
391 | if (r < 0) { | |
392 | error_setg_errno(errp, -r, "cannot get raw image size"); | |
393 | return r; | |
394 | } | |
395 | ||
396 | switch (encrypt->format) { | |
397 | case RBD_IMAGE_ENCRYPTION_FORMAT_LUKS: { | |
398 | memset(&luks_opts, 0, sizeof(luks_opts)); | |
399 | format = RBD_ENCRYPTION_FORMAT_LUKS1; | |
400 | opts = &luks_opts; | |
401 | opts_size = sizeof(luks_opts); | |
402 | r = qemu_rbd_convert_luks_create_options( | |
403 | qapi_RbdEncryptionCreateOptionsLUKS_base(&encrypt->u.luks), | |
404 | &luks_opts.alg, &passphrase, &passphrase_len, errp); | |
405 | if (r < 0) { | |
406 | return r; | |
407 | } | |
408 | luks_opts.passphrase = passphrase; | |
409 | luks_opts.passphrase_size = passphrase_len; | |
410 | break; | |
411 | } | |
412 | case RBD_IMAGE_ENCRYPTION_FORMAT_LUKS2: { | |
413 | memset(&luks2_opts, 0, sizeof(luks2_opts)); | |
414 | format = RBD_ENCRYPTION_FORMAT_LUKS2; | |
415 | opts = &luks2_opts; | |
416 | opts_size = sizeof(luks2_opts); | |
417 | r = qemu_rbd_convert_luks_create_options( | |
418 | qapi_RbdEncryptionCreateOptionsLUKS2_base( | |
419 | &encrypt->u.luks2), | |
420 | &luks2_opts.alg, &passphrase, &passphrase_len, errp); | |
421 | if (r < 0) { | |
422 | return r; | |
423 | } | |
424 | luks2_opts.passphrase = passphrase; | |
425 | luks2_opts.passphrase_size = passphrase_len; | |
426 | break; | |
427 | } | |
428 | default: { | |
429 | r = -ENOTSUP; | |
430 | error_setg_errno( | |
431 | errp, -r, "unknown image encryption format: %u", | |
432 | encrypt->format); | |
433 | return r; | |
434 | } | |
435 | } | |
436 | ||
437 | r = rbd_encryption_format(image, format, opts, opts_size); | |
438 | if (r < 0) { | |
439 | error_setg_errno(errp, -r, "encryption format fail"); | |
440 | return r; | |
441 | } | |
442 | ||
443 | r = rbd_get_size(image, &effective_size); | |
444 | if (r < 0) { | |
445 | error_setg_errno(errp, -r, "cannot get effective image size"); | |
446 | return r; | |
447 | } | |
448 | ||
449 | r = rbd_resize(image, raw_size + (raw_size - effective_size)); | |
450 | if (r < 0) { | |
451 | error_setg_errno(errp, -r, "cannot resize image after format"); | |
452 | return r; | |
453 | } | |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
458 | static int qemu_rbd_encryption_load(rbd_image_t image, | |
459 | RbdEncryptionOptions *encrypt, | |
460 | Error **errp) | |
461 | { | |
462 | int r = 0; | |
463 | g_autofree char *passphrase = NULL; | |
464 | size_t passphrase_len; | |
465 | rbd_encryption_luks1_format_options_t luks_opts; | |
466 | rbd_encryption_luks2_format_options_t luks2_opts; | |
467 | rbd_encryption_format_t format; | |
468 | rbd_encryption_options_t opts; | |
469 | size_t opts_size; | |
470 | ||
471 | switch (encrypt->format) { | |
472 | case RBD_IMAGE_ENCRYPTION_FORMAT_LUKS: { | |
473 | memset(&luks_opts, 0, sizeof(luks_opts)); | |
474 | format = RBD_ENCRYPTION_FORMAT_LUKS1; | |
475 | opts = &luks_opts; | |
476 | opts_size = sizeof(luks_opts); | |
477 | r = qemu_rbd_convert_luks_options( | |
478 | qapi_RbdEncryptionOptionsLUKS_base(&encrypt->u.luks), | |
479 | &passphrase, &passphrase_len, errp); | |
480 | if (r < 0) { | |
481 | return r; | |
482 | } | |
483 | luks_opts.passphrase = passphrase; | |
484 | luks_opts.passphrase_size = passphrase_len; | |
485 | break; | |
486 | } | |
487 | case RBD_IMAGE_ENCRYPTION_FORMAT_LUKS2: { | |
488 | memset(&luks2_opts, 0, sizeof(luks2_opts)); | |
489 | format = RBD_ENCRYPTION_FORMAT_LUKS2; | |
490 | opts = &luks2_opts; | |
491 | opts_size = sizeof(luks2_opts); | |
492 | r = qemu_rbd_convert_luks_options( | |
493 | qapi_RbdEncryptionOptionsLUKS2_base(&encrypt->u.luks2), | |
494 | &passphrase, &passphrase_len, errp); | |
495 | if (r < 0) { | |
496 | return r; | |
497 | } | |
498 | luks2_opts.passphrase = passphrase; | |
499 | luks2_opts.passphrase_size = passphrase_len; | |
500 | break; | |
501 | } | |
502 | default: { | |
503 | r = -ENOTSUP; | |
504 | error_setg_errno( | |
505 | errp, -r, "unknown image encryption format: %u", | |
506 | encrypt->format); | |
507 | return r; | |
508 | } | |
509 | } | |
510 | ||
511 | r = rbd_encryption_load(image, format, opts, opts_size); | |
512 | if (r < 0) { | |
513 | error_setg_errno(errp, -r, "encryption load fail"); | |
514 | return r; | |
515 | } | |
516 | ||
517 | return 0; | |
518 | } | |
519 | #endif | |
520 | ||
d083f954 | 521 | /* FIXME Deprecate and remove keypairs or make it available in QMP. */ |
1bebea37 KW |
522 | static int qemu_rbd_do_create(BlockdevCreateOptions *options, |
523 | const char *keypairs, const char *password_secret, | |
524 | Error **errp) | |
f27aaf4b | 525 | { |
1bebea37 | 526 | BlockdevCreateOptionsRbd *opts = &options->u.rbd; |
ad32e9c0 JD |
527 | rados_t cluster; |
528 | rados_ioctx_t io_ctx; | |
1bebea37 KW |
529 | int obj_order = 0; |
530 | int ret; | |
531 | ||
532 | assert(options->driver == BLOCKDEV_DRIVER_RBD); | |
533 | if (opts->location->has_snapshot) { | |
534 | error_setg(errp, "Can't use snapshot name for image creation"); | |
535 | return -EINVAL; | |
536 | } | |
f27aaf4b | 537 | |
42e4ac9e OO |
538 | #ifndef LIBRBD_SUPPORTS_ENCRYPTION |
539 | if (opts->has_encrypt) { | |
540 | error_setg(errp, "RBD library does not support image encryption"); | |
541 | return -ENOTSUP; | |
542 | } | |
543 | #endif | |
544 | ||
1bebea37 KW |
545 | if (opts->has_cluster_size) { |
546 | int64_t objsize = opts->cluster_size; | |
bd0cf596 CL |
547 | if ((objsize - 1) & objsize) { /* not a power of 2? */ |
548 | error_setg(errp, "obj size needs to be power of 2"); | |
1bebea37 | 549 | return -EINVAL; |
bd0cf596 CL |
550 | } |
551 | if (objsize < 4096) { | |
552 | error_setg(errp, "obj size too small"); | |
1bebea37 | 553 | return -EINVAL; |
f27aaf4b | 554 | } |
786a4ea8 | 555 | obj_order = ctz32(objsize); |
f27aaf4b CB |
556 | } |
557 | ||
aa045c2d KW |
558 | ret = qemu_rbd_connect(&cluster, &io_ctx, opts->location, false, keypairs, |
559 | password_secret, errp); | |
87cd3d20 | 560 | if (ret < 0) { |
1bebea37 | 561 | return ret; |
f27aaf4b CB |
562 | } |
563 | ||
1bebea37 | 564 | ret = rbd_create(io_ctx, opts->location->image, opts->size, &obj_order); |
87cd3d20 VU |
565 | if (ret < 0) { |
566 | error_setg_errno(errp, -ret, "error rbd create"); | |
aa045c2d | 567 | goto out; |
87cd3d20 | 568 | } |
f27aaf4b | 569 | |
42e4ac9e OO |
570 | #ifdef LIBRBD_SUPPORTS_ENCRYPTION |
571 | if (opts->has_encrypt) { | |
572 | rbd_image_t image; | |
573 | ||
574 | ret = rbd_open(io_ctx, opts->location->image, &image, NULL); | |
575 | if (ret < 0) { | |
576 | error_setg_errno(errp, -ret, | |
577 | "error opening image '%s' for encryption format", | |
578 | opts->location->image); | |
579 | goto out; | |
580 | } | |
581 | ||
582 | ret = qemu_rbd_encryption_format(image, opts->encrypt, errp); | |
583 | rbd_close(image); | |
584 | if (ret < 0) { | |
585 | /* encryption format fail, try removing the image */ | |
586 | rbd_remove(io_ctx, opts->location->image); | |
587 | goto out; | |
588 | } | |
589 | } | |
590 | #endif | |
591 | ||
1bebea37 | 592 | ret = 0; |
aa045c2d KW |
593 | out: |
594 | rados_ioctx_destroy(io_ctx); | |
e38f643a | 595 | rados_shutdown(cluster); |
1bebea37 KW |
596 | return ret; |
597 | } | |
598 | ||
599 | static int qemu_rbd_co_create(BlockdevCreateOptions *options, Error **errp) | |
600 | { | |
601 | return qemu_rbd_do_create(options, NULL, NULL, errp); | |
602 | } | |
603 | ||
42e4ac9e OO |
604 | static int qemu_rbd_extract_encryption_create_options( |
605 | QemuOpts *opts, | |
606 | RbdEncryptionCreateOptions **spec, | |
607 | Error **errp) | |
608 | { | |
609 | QDict *opts_qdict; | |
610 | QDict *encrypt_qdict; | |
611 | Visitor *v; | |
612 | int ret = 0; | |
613 | ||
614 | opts_qdict = qemu_opts_to_qdict(opts, NULL); | |
615 | qdict_extract_subqdict(opts_qdict, &encrypt_qdict, "encrypt."); | |
616 | qobject_unref(opts_qdict); | |
617 | if (!qdict_size(encrypt_qdict)) { | |
618 | *spec = NULL; | |
619 | goto exit; | |
620 | } | |
621 | ||
622 | /* Convert options into a QAPI object */ | |
623 | v = qobject_input_visitor_new_flat_confused(encrypt_qdict, errp); | |
624 | if (!v) { | |
625 | ret = -EINVAL; | |
626 | goto exit; | |
627 | } | |
628 | ||
629 | visit_type_RbdEncryptionCreateOptions(v, NULL, spec, errp); | |
630 | visit_free(v); | |
631 | if (!*spec) { | |
632 | ret = -EINVAL; | |
633 | goto exit; | |
634 | } | |
635 | ||
636 | exit: | |
637 | qobject_unref(encrypt_qdict); | |
638 | return ret; | |
639 | } | |
640 | ||
b92902df ML |
641 | static int coroutine_fn qemu_rbd_co_create_opts(BlockDriver *drv, |
642 | const char *filename, | |
1bebea37 KW |
643 | QemuOpts *opts, |
644 | Error **errp) | |
645 | { | |
646 | BlockdevCreateOptions *create_options; | |
647 | BlockdevCreateOptionsRbd *rbd_opts; | |
648 | BlockdevOptionsRbd *loc; | |
42e4ac9e | 649 | RbdEncryptionCreateOptions *encrypt = NULL; |
1bebea37 KW |
650 | Error *local_err = NULL; |
651 | const char *keypairs, *password_secret; | |
652 | QDict *options = NULL; | |
653 | int ret = 0; | |
654 | ||
655 | create_options = g_new0(BlockdevCreateOptions, 1); | |
656 | create_options->driver = BLOCKDEV_DRIVER_RBD; | |
657 | rbd_opts = &create_options->u.rbd; | |
658 | ||
659 | rbd_opts->location = g_new0(BlockdevOptionsRbd, 1); | |
660 | ||
661 | password_secret = qemu_opt_get(opts, "password-secret"); | |
662 | ||
663 | /* Read out options */ | |
664 | rbd_opts->size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), | |
665 | BDRV_SECTOR_SIZE); | |
666 | rbd_opts->cluster_size = qemu_opt_get_size_del(opts, | |
667 | BLOCK_OPT_CLUSTER_SIZE, 0); | |
668 | rbd_opts->has_cluster_size = (rbd_opts->cluster_size != 0); | |
669 | ||
670 | options = qdict_new(); | |
671 | qemu_rbd_parse_filename(filename, options, &local_err); | |
672 | if (local_err) { | |
673 | ret = -EINVAL; | |
674 | error_propagate(errp, local_err); | |
675 | goto exit; | |
676 | } | |
677 | ||
42e4ac9e OO |
678 | ret = qemu_rbd_extract_encryption_create_options(opts, &encrypt, errp); |
679 | if (ret < 0) { | |
680 | goto exit; | |
681 | } | |
682 | rbd_opts->encrypt = encrypt; | |
683 | rbd_opts->has_encrypt = !!encrypt; | |
684 | ||
1bebea37 KW |
685 | /* |
686 | * Caution: while qdict_get_try_str() is fine, getting non-string | |
687 | * types would require more care. When @options come from -blockdev | |
688 | * or blockdev_add, its members are typed according to the QAPI | |
689 | * schema, but when they come from -drive, they're all QString. | |
690 | */ | |
691 | loc = rbd_opts->location; | |
19ae9ae0 FF |
692 | loc->pool = g_strdup(qdict_get_try_str(options, "pool")); |
693 | loc->conf = g_strdup(qdict_get_try_str(options, "conf")); | |
694 | loc->has_conf = !!loc->conf; | |
695 | loc->user = g_strdup(qdict_get_try_str(options, "user")); | |
696 | loc->has_user = !!loc->user; | |
697 | loc->q_namespace = g_strdup(qdict_get_try_str(options, "namespace")); | |
b084b420 | 698 | loc->has_q_namespace = !!loc->q_namespace; |
19ae9ae0 FF |
699 | loc->image = g_strdup(qdict_get_try_str(options, "image")); |
700 | keypairs = qdict_get_try_str(options, "=keyvalue-pairs"); | |
1bebea37 KW |
701 | |
702 | ret = qemu_rbd_do_create(create_options, keypairs, password_secret, errp); | |
703 | if (ret < 0) { | |
704 | goto exit; | |
705 | } | |
c7cacb3e JC |
706 | |
707 | exit: | |
cb3e7f08 | 708 | qobject_unref(options); |
1bebea37 | 709 | qapi_free_BlockdevCreateOptions(create_options); |
f27aaf4b CB |
710 | return ret; |
711 | } | |
712 | ||
4bfb2741 | 713 | static char *qemu_rbd_mon_host(BlockdevOptionsRbd *opts, Error **errp) |
0a55679b | 714 | { |
4bfb2741 | 715 | const char **vals; |
2836284d MA |
716 | const char *host, *port; |
717 | char *rados_str; | |
4bfb2741 KW |
718 | InetSocketAddressBaseList *p; |
719 | int i, cnt; | |
720 | ||
721 | if (!opts->has_server) { | |
722 | return NULL; | |
723 | } | |
724 | ||
725 | for (cnt = 0, p = opts->server; p; p = p->next) { | |
726 | cnt++; | |
727 | } | |
728 | ||
729 | vals = g_new(const char *, cnt + 1); | |
730 | ||
731 | for (i = 0, p = opts->server; p; p = p->next, i++) { | |
732 | host = p->value->host; | |
733 | port = p->value->port; | |
0a55679b | 734 | |
2836284d | 735 | if (strchr(host, ':')) { |
4bfb2741 | 736 | vals[i] = g_strdup_printf("[%s]:%s", host, port); |
0a55679b | 737 | } else { |
4bfb2741 | 738 | vals[i] = g_strdup_printf("%s:%s", host, port); |
0a55679b | 739 | } |
0a55679b | 740 | } |
2836284d | 741 | vals[i] = NULL; |
0a55679b | 742 | |
2836284d | 743 | rados_str = i ? g_strjoinv(";", (char **)vals) : NULL; |
2836284d | 744 | g_strfreev((char **)vals); |
0a55679b JC |
745 | return rados_str; |
746 | } | |
747 | ||
3d9136f9 | 748 | static int qemu_rbd_connect(rados_t *cluster, rados_ioctx_t *io_ctx, |
4bfb2741 | 749 | BlockdevOptionsRbd *opts, bool cache, |
4ff45049 KW |
750 | const char *keypairs, const char *secretid, |
751 | Error **errp) | |
f27aaf4b | 752 | { |
0a55679b | 753 | char *mon_host = NULL; |
3d9136f9 | 754 | Error *local_err = NULL; |
f27aaf4b CB |
755 | int r; |
756 | ||
d083f954 MA |
757 | if (secretid) { |
758 | if (opts->key_secret) { | |
759 | error_setg(errp, | |
760 | "Legacy 'password-secret' clashes with 'key-secret'"); | |
761 | return -EINVAL; | |
762 | } | |
763 | opts->key_secret = g_strdup(secretid); | |
764 | opts->has_key_secret = true; | |
765 | } | |
766 | ||
4bfb2741 | 767 | mon_host = qemu_rbd_mon_host(opts, &local_err); |
0a55679b JC |
768 | if (local_err) { |
769 | error_propagate(errp, local_err); | |
770 | r = -EINVAL; | |
c1c1f6cf | 771 | goto out; |
0a55679b JC |
772 | } |
773 | ||
4bfb2741 | 774 | r = rados_create(cluster, opts->user); |
ad32e9c0 | 775 | if (r < 0) { |
87cd3d20 | 776 | error_setg_errno(errp, -r, "error initializing"); |
c1c1f6cf | 777 | goto out; |
f27aaf4b CB |
778 | } |
779 | ||
c7cacb3e | 780 | /* try default location when conf=NULL, but ignore failure */ |
4bfb2741 KW |
781 | r = rados_conf_read_file(*cluster, opts->conf); |
782 | if (opts->has_conf && r < 0) { | |
783 | error_setg_errno(errp, -r, "error reading conf file %s", opts->conf); | |
c7cacb3e | 784 | goto failed_shutdown; |
99a3c89d JD |
785 | } |
786 | ||
3d9136f9 | 787 | r = qemu_rbd_set_keypairs(*cluster, keypairs, errp); |
c7cacb3e JC |
788 | if (r < 0) { |
789 | goto failed_shutdown; | |
99a3c89d JD |
790 | } |
791 | ||
0a55679b | 792 | if (mon_host) { |
3d9136f9 | 793 | r = rados_conf_set(*cluster, "mon_host", mon_host); |
0a55679b JC |
794 | if (r < 0) { |
795 | goto failed_shutdown; | |
796 | } | |
797 | } | |
798 | ||
d083f954 MA |
799 | r = qemu_rbd_set_auth(*cluster, opts, errp); |
800 | if (r < 0) { | |
60390a21 DB |
801 | goto failed_shutdown; |
802 | } | |
803 | ||
b11f38fc JD |
804 | /* |
805 | * Fallback to more conservative semantics if setting cache | |
806 | * options fails. Ignore errors from setting rbd_cache because the | |
807 | * only possible error is that the option does not exist, and | |
808 | * librbd defaults to no caching. If write through caching cannot | |
809 | * be set up, fall back to no caching. | |
810 | */ | |
3d9136f9 KW |
811 | if (cache) { |
812 | rados_conf_set(*cluster, "rbd_cache", "true"); | |
b11f38fc | 813 | } else { |
3d9136f9 | 814 | rados_conf_set(*cluster, "rbd_cache", "false"); |
b11f38fc JD |
815 | } |
816 | ||
3d9136f9 | 817 | r = rados_connect(*cluster); |
ad32e9c0 | 818 | if (r < 0) { |
87cd3d20 | 819 | error_setg_errno(errp, -r, "error connecting"); |
eb93d5d9 | 820 | goto failed_shutdown; |
f27aaf4b CB |
821 | } |
822 | ||
4bfb2741 | 823 | r = rados_ioctx_create(*cluster, opts->pool, io_ctx); |
ad32e9c0 | 824 | if (r < 0) { |
4bfb2741 | 825 | error_setg_errno(errp, -r, "error opening pool %s", opts->pool); |
eb93d5d9 | 826 | goto failed_shutdown; |
f27aaf4b | 827 | } |
19ae9ae0 FF |
828 | /* |
829 | * Set the namespace after opening the io context on the pool, | |
830 | * if nspace == NULL or if nspace == "", it is just as we did nothing | |
831 | */ | |
832 | rados_ioctx_set_namespace(*io_ctx, opts->q_namespace); | |
f27aaf4b | 833 | |
c1c1f6cf SG |
834 | r = 0; |
835 | goto out; | |
3d9136f9 KW |
836 | |
837 | failed_shutdown: | |
838 | rados_shutdown(*cluster); | |
c1c1f6cf | 839 | out: |
3d9136f9 KW |
840 | g_free(mon_host); |
841 | return r; | |
842 | } | |
843 | ||
f24b03b5 JC |
844 | static int qemu_rbd_convert_options(QDict *options, BlockdevOptionsRbd **opts, |
845 | Error **errp) | |
846 | { | |
847 | Visitor *v; | |
f24b03b5 JC |
848 | |
849 | /* Convert the remaining options into a QAPI object */ | |
850 | v = qobject_input_visitor_new_flat_confused(options, errp); | |
851 | if (!v) { | |
852 | return -EINVAL; | |
853 | } | |
854 | ||
b11a093c | 855 | visit_type_BlockdevOptionsRbd(v, NULL, opts, errp); |
f24b03b5 | 856 | visit_free(v); |
b11a093c | 857 | if (!opts) { |
f24b03b5 JC |
858 | return -EINVAL; |
859 | } | |
860 | ||
861 | return 0; | |
862 | } | |
863 | ||
084d1d13 JC |
864 | static int qemu_rbd_attempt_legacy_options(QDict *options, |
865 | BlockdevOptionsRbd **opts, | |
866 | char **keypairs) | |
867 | { | |
868 | char *filename; | |
869 | int r; | |
870 | ||
871 | filename = g_strdup(qdict_get_try_str(options, "filename")); | |
872 | if (!filename) { | |
873 | return -EINVAL; | |
874 | } | |
875 | qdict_del(options, "filename"); | |
876 | ||
877 | qemu_rbd_parse_filename(filename, options, NULL); | |
878 | ||
879 | /* keypairs freed by caller */ | |
880 | *keypairs = g_strdup(qdict_get_try_str(options, "=keyvalue-pairs")); | |
881 | if (*keypairs) { | |
882 | qdict_del(options, "=keyvalue-pairs"); | |
883 | } | |
884 | ||
885 | r = qemu_rbd_convert_options(options, opts, NULL); | |
886 | ||
887 | g_free(filename); | |
888 | return r; | |
889 | } | |
890 | ||
3d9136f9 KW |
891 | static int qemu_rbd_open(BlockDriverState *bs, QDict *options, int flags, |
892 | Error **errp) | |
893 | { | |
894 | BDRVRBDState *s = bs->opaque; | |
4bfb2741 | 895 | BlockdevOptionsRbd *opts = NULL; |
bfb15b4b | 896 | const QDictEntry *e; |
3d9136f9 | 897 | Error *local_err = NULL; |
4ff45049 | 898 | char *keypairs, *secretid; |
832a93dc | 899 | rbd_image_info_t info; |
3d9136f9 KW |
900 | int r; |
901 | ||
4ff45049 KW |
902 | keypairs = g_strdup(qdict_get_try_str(options, "=keyvalue-pairs")); |
903 | if (keypairs) { | |
904 | qdict_del(options, "=keyvalue-pairs"); | |
905 | } | |
906 | ||
907 | secretid = g_strdup(qdict_get_try_str(options, "password-secret")); | |
908 | if (secretid) { | |
909 | qdict_del(options, "password-secret"); | |
910 | } | |
911 | ||
f24b03b5 | 912 | r = qemu_rbd_convert_options(options, &opts, &local_err); |
4bfb2741 | 913 | if (local_err) { |
084d1d13 JC |
914 | /* If keypairs are present, that means some options are present in |
915 | * the modern option format. Don't attempt to parse legacy option | |
916 | * formats, as we won't support mixed usage. */ | |
917 | if (keypairs) { | |
918 | error_propagate(errp, local_err); | |
919 | goto out; | |
920 | } | |
921 | ||
922 | /* If the initial attempt to convert and process the options failed, | |
923 | * we may be attempting to open an image file that has the rbd options | |
924 | * specified in the older format consisting of all key/value pairs | |
925 | * encoded in the filename. Go ahead and attempt to parse the | |
926 | * filename, and see if we can pull out the required options. */ | |
927 | r = qemu_rbd_attempt_legacy_options(options, &opts, &keypairs); | |
928 | if (r < 0) { | |
929 | /* Propagate the original error, not the legacy parsing fallback | |
930 | * error, as the latter was just a best-effort attempt. */ | |
931 | error_propagate(errp, local_err); | |
932 | goto out; | |
933 | } | |
934 | /* Take care whenever deciding to actually deprecate; once this ability | |
935 | * is removed, we will not be able to open any images with legacy-styled | |
936 | * backing image strings. */ | |
5197f445 MA |
937 | warn_report("RBD options encoded in the filename as keyvalue pairs " |
938 | "is deprecated"); | |
4bfb2741 KW |
939 | } |
940 | ||
bfb15b4b JC |
941 | /* Remove the processed options from the QDict (the visitor processes |
942 | * _all_ options in the QDict) */ | |
943 | while ((e = qdict_first(options))) { | |
944 | qdict_del(options, e->key); | |
945 | } | |
946 | ||
d41a5588 KW |
947 | r = qemu_rbd_connect(&s->cluster, &s->io_ctx, opts, |
948 | !(flags & BDRV_O_NOCACHE), keypairs, secretid, errp); | |
3d9136f9 | 949 | if (r < 0) { |
4ff45049 | 950 | goto out; |
3d9136f9 KW |
951 | } |
952 | ||
d41a5588 KW |
953 | s->snap = g_strdup(opts->snapshot); |
954 | s->image_name = g_strdup(opts->image); | |
955 | ||
e2b8247a | 956 | /* rbd_open is always r/w */ |
80b61a27 | 957 | r = rbd_open(s->io_ctx, s->image_name, &s->image, s->snap); |
f27aaf4b | 958 | if (r < 0) { |
80b61a27 JC |
959 | error_setg_errno(errp, -r, "error reading header from %s", |
960 | s->image_name); | |
eb93d5d9 | 961 | goto failed_open; |
f27aaf4b CB |
962 | } |
963 | ||
42e4ac9e OO |
964 | if (opts->has_encrypt) { |
965 | #ifdef LIBRBD_SUPPORTS_ENCRYPTION | |
966 | r = qemu_rbd_encryption_load(s->image, opts->encrypt, errp); | |
967 | if (r < 0) { | |
968 | goto failed_post_open; | |
969 | } | |
970 | #else | |
971 | r = -ENOTSUP; | |
972 | error_setg(errp, "RBD library does not support image encryption"); | |
973 | goto failed_post_open; | |
974 | #endif | |
975 | } | |
976 | ||
832a93dc | 977 | r = rbd_stat(s->image, &info, sizeof(info)); |
d24f8023 | 978 | if (r < 0) { |
832a93dc | 979 | error_setg_errno(errp, -r, "error getting image info from %s", |
d24f8023 | 980 | s->image_name); |
42e4ac9e | 981 | goto failed_post_open; |
d24f8023 | 982 | } |
832a93dc PL |
983 | s->image_size = info.size; |
984 | s->object_size = info.obj_size; | |
d24f8023 | 985 | |
e2b8247a JC |
986 | /* If we are using an rbd snapshot, we must be r/o, otherwise |
987 | * leave as-is */ | |
988 | if (s->snap != NULL) { | |
eaa2410f KW |
989 | r = bdrv_apply_auto_read_only(bs, "rbd snapshots are read-only", errp); |
990 | if (r < 0) { | |
42e4ac9e | 991 | goto failed_post_open; |
e2b8247a JC |
992 | } |
993 | } | |
f27aaf4b | 994 | |
c56ac27d PL |
995 | #ifdef LIBRBD_SUPPORTS_WRITE_ZEROES |
996 | bs->supported_zero_flags = BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK; | |
997 | #endif | |
998 | ||
2f98910d EB |
999 | /* When extending regular files, we get zeros from the OS */ |
1000 | bs->supported_truncate_flags = BDRV_REQ_ZERO_WRITE; | |
1001 | ||
4ff45049 KW |
1002 | r = 0; |
1003 | goto out; | |
f27aaf4b | 1004 | |
42e4ac9e OO |
1005 | failed_post_open: |
1006 | rbd_close(s->image); | |
eb93d5d9 | 1007 | failed_open: |
ad32e9c0 | 1008 | rados_ioctx_destroy(s->io_ctx); |
eb93d5d9 | 1009 | g_free(s->snap); |
80b61a27 | 1010 | g_free(s->image_name); |
3d9136f9 | 1011 | rados_shutdown(s->cluster); |
4ff45049 | 1012 | out: |
4bfb2741 | 1013 | qapi_free_BlockdevOptionsRbd(opts); |
4ff45049 KW |
1014 | g_free(keypairs); |
1015 | g_free(secretid); | |
f27aaf4b CB |
1016 | return r; |
1017 | } | |
1018 | ||
56e7cf8d JC |
1019 | |
1020 | /* Since RBD is currently always opened R/W via the API, | |
1021 | * we just need to check if we are using a snapshot or not, in | |
1022 | * order to determine if we will allow it to be R/W */ | |
1023 | static int qemu_rbd_reopen_prepare(BDRVReopenState *state, | |
1024 | BlockReopenQueue *queue, Error **errp) | |
1025 | { | |
1026 | BDRVRBDState *s = state->bs->opaque; | |
1027 | int ret = 0; | |
1028 | ||
1029 | if (s->snap && state->flags & BDRV_O_RDWR) { | |
1030 | error_setg(errp, | |
1031 | "Cannot change node '%s' to r/w when using RBD snapshot", | |
1032 | bdrv_get_device_or_node_name(state->bs)); | |
1033 | ret = -EINVAL; | |
1034 | } | |
1035 | ||
1036 | return ret; | |
1037 | } | |
1038 | ||
ad32e9c0 | 1039 | static void qemu_rbd_close(BlockDriverState *bs) |
f27aaf4b CB |
1040 | { |
1041 | BDRVRBDState *s = bs->opaque; | |
1042 | ||
ad32e9c0 JD |
1043 | rbd_close(s->image); |
1044 | rados_ioctx_destroy(s->io_ctx); | |
7267c094 | 1045 | g_free(s->snap); |
80b61a27 | 1046 | g_free(s->image_name); |
ad32e9c0 | 1047 | rados_shutdown(s->cluster); |
f27aaf4b CB |
1048 | } |
1049 | ||
d24f8023 SG |
1050 | /* Resize the RBD image and update the 'image_size' with the current size */ |
1051 | static int qemu_rbd_resize(BlockDriverState *bs, uint64_t size) | |
1052 | { | |
1053 | BDRVRBDState *s = bs->opaque; | |
1054 | int r; | |
1055 | ||
1056 | r = rbd_resize(s->image, size); | |
1057 | if (r < 0) { | |
1058 | return r; | |
1059 | } | |
1060 | ||
1061 | s->image_size = size; | |
1062 | ||
1063 | return 0; | |
1064 | } | |
1065 | ||
c3e5fac5 | 1066 | static void qemu_rbd_finish_bh(void *opaque) |
f27aaf4b | 1067 | { |
c3e5fac5 | 1068 | RBDTask *task = opaque; |
64cc845b | 1069 | task->complete = true; |
c3e5fac5 | 1070 | aio_co_wake(task->co); |
ad32e9c0 JD |
1071 | } |
1072 | ||
1073 | /* | |
c3e5fac5 PL |
1074 | * This is the completion callback function for all rbd aio calls |
1075 | * started from qemu_rbd_start_co(). | |
ad32e9c0 JD |
1076 | * |
1077 | * Note: this function is being called from a non qemu thread so | |
1078 | * we need to be careful about what we do here. Generally we only | |
e04fb07f | 1079 | * schedule a BH, and do the rest of the io completion handling |
c3e5fac5 | 1080 | * from qemu_rbd_finish_bh() which runs in a qemu context. |
ad32e9c0 | 1081 | */ |
c3e5fac5 | 1082 | static void qemu_rbd_completion_cb(rbd_completion_t c, RBDTask *task) |
ad32e9c0 | 1083 | { |
c3e5fac5 | 1084 | task->ret = rbd_aio_get_return_value(c); |
ad32e9c0 | 1085 | rbd_aio_release(c); |
c3e5fac5 PL |
1086 | aio_bh_schedule_oneshot(bdrv_get_aio_context(task->bs), |
1087 | qemu_rbd_finish_bh, task); | |
f27aaf4b CB |
1088 | } |
1089 | ||
c3e5fac5 PL |
1090 | static int coroutine_fn qemu_rbd_start_co(BlockDriverState *bs, |
1091 | uint64_t offset, | |
1092 | uint64_t bytes, | |
1093 | QEMUIOVector *qiov, | |
1094 | int flags, | |
1095 | RBDAIOCmd cmd) | |
f27aaf4b | 1096 | { |
c3e5fac5 PL |
1097 | BDRVRBDState *s = bs->opaque; |
1098 | RBDTask task = { .bs = bs, .co = qemu_coroutine_self() }; | |
ad32e9c0 | 1099 | rbd_completion_t c; |
51a13528 | 1100 | int r; |
f27aaf4b | 1101 | |
c3e5fac5 | 1102 | assert(!qiov || qiov->size == bytes); |
1d393bde | 1103 | |
c3e5fac5 PL |
1104 | r = rbd_aio_create_completion(&task, |
1105 | (rbd_callback_t) qemu_rbd_completion_cb, &c); | |
51a13528 | 1106 | if (r < 0) { |
c3e5fac5 | 1107 | return r; |
51a13528 | 1108 | } |
f27aaf4b | 1109 | |
787f3133 | 1110 | switch (cmd) { |
787f3133 | 1111 | case RBD_AIO_READ: |
c3e5fac5 PL |
1112 | r = rbd_aio_readv(s->image, qiov->iov, qiov->niov, offset, c); |
1113 | break; | |
1114 | case RBD_AIO_WRITE: | |
1115 | r = rbd_aio_writev(s->image, qiov->iov, qiov->niov, offset, c); | |
787f3133 JD |
1116 | break; |
1117 | case RBD_AIO_DISCARD: | |
c3e5fac5 | 1118 | r = rbd_aio_discard(s->image, offset, bytes, c); |
787f3133 | 1119 | break; |
dc7588c1 | 1120 | case RBD_AIO_FLUSH: |
48672ac0 | 1121 | r = rbd_aio_flush(s->image, c); |
dc7588c1 | 1122 | break; |
c56ac27d PL |
1123 | #ifdef LIBRBD_SUPPORTS_WRITE_ZEROES |
1124 | case RBD_AIO_WRITE_ZEROES: { | |
1125 | int zero_flags = 0; | |
1126 | #ifdef RBD_WRITE_ZEROES_FLAG_THICK_PROVISION | |
1127 | if (!(flags & BDRV_REQ_MAY_UNMAP)) { | |
1128 | zero_flags = RBD_WRITE_ZEROES_FLAG_THICK_PROVISION; | |
1129 | } | |
1130 | #endif | |
1131 | r = rbd_aio_write_zeroes(s->image, offset, bytes, c, zero_flags, 0); | |
1132 | break; | |
1133 | } | |
1134 | #endif | |
787f3133 JD |
1135 | default: |
1136 | r = -EINVAL; | |
51a13528 JD |
1137 | } |
1138 | ||
1139 | if (r < 0) { | |
c3e5fac5 PL |
1140 | error_report("rbd request failed early: cmd %d offset %" PRIu64 |
1141 | " bytes %" PRIu64 " flags %d r %d (%s)", cmd, offset, | |
1142 | bytes, flags, r, strerror(-r)); | |
1143 | rbd_aio_release(c); | |
1144 | return r; | |
f27aaf4b | 1145 | } |
51a13528 | 1146 | |
c3e5fac5 PL |
1147 | while (!task.complete) { |
1148 | qemu_coroutine_yield(); | |
1149 | } | |
1d393bde | 1150 | |
c3e5fac5 PL |
1151 | if (task.ret < 0) { |
1152 | error_report("rbd request failed: cmd %d offset %" PRIu64 " bytes %" | |
1153 | PRIu64 " flags %d task.ret %" PRIi64 " (%s)", cmd, offset, | |
1154 | bytes, flags, task.ret, strerror(-task.ret)); | |
1155 | return task.ret; | |
1156 | } | |
1157 | ||
1158 | /* zero pad short reads */ | |
1159 | if (cmd == RBD_AIO_READ && task.ret < qiov->size) { | |
1160 | qemu_iovec_memset(qiov, task.ret, 0, qiov->size - task.ret); | |
1161 | } | |
1162 | ||
1163 | return 0; | |
1164 | } | |
1165 | ||
1166 | static int | |
f7ef38dd VSO |
1167 | coroutine_fn qemu_rbd_co_preadv(BlockDriverState *bs, int64_t offset, |
1168 | int64_t bytes, QEMUIOVector *qiov, | |
1169 | BdrvRequestFlags flags) | |
c3e5fac5 PL |
1170 | { |
1171 | return qemu_rbd_start_co(bs, offset, bytes, qiov, flags, RBD_AIO_READ); | |
f27aaf4b CB |
1172 | } |
1173 | ||
c3e5fac5 | 1174 | static int |
e75abeda VSO |
1175 | coroutine_fn qemu_rbd_co_pwritev(BlockDriverState *bs, int64_t offset, |
1176 | int64_t bytes, QEMUIOVector *qiov, | |
1177 | BdrvRequestFlags flags) | |
f27aaf4b | 1178 | { |
c3e5fac5 PL |
1179 | BDRVRBDState *s = bs->opaque; |
1180 | /* | |
1181 | * RBD APIs don't allow us to write more than actual size, so in order | |
1182 | * to support growing images, we resize the image before write | |
1183 | * operations that exceed the current size. | |
1184 | */ | |
1185 | if (offset + bytes > s->image_size) { | |
1186 | int r = qemu_rbd_resize(bs, offset + bytes); | |
1187 | if (r < 0) { | |
1188 | return r; | |
1189 | } | |
1190 | } | |
1191 | return qemu_rbd_start_co(bs, offset, bytes, qiov, flags, RBD_AIO_WRITE); | |
f27aaf4b CB |
1192 | } |
1193 | ||
c3e5fac5 | 1194 | static int coroutine_fn qemu_rbd_co_flush(BlockDriverState *bs) |
f27aaf4b | 1195 | { |
c3e5fac5 | 1196 | return qemu_rbd_start_co(bs, 0, 0, NULL, 0, RBD_AIO_FLUSH); |
f27aaf4b CB |
1197 | } |
1198 | ||
c3e5fac5 | 1199 | static int coroutine_fn qemu_rbd_co_pdiscard(BlockDriverState *bs, |
0c802287 | 1200 | int64_t offset, int64_t bytes) |
dc7588c1 | 1201 | { |
0c802287 | 1202 | return qemu_rbd_start_co(bs, offset, bytes, NULL, 0, RBD_AIO_DISCARD); |
dc7588c1 JD |
1203 | } |
1204 | ||
c56ac27d PL |
1205 | #ifdef LIBRBD_SUPPORTS_WRITE_ZEROES |
1206 | static int | |
1207 | coroutine_fn qemu_rbd_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset, | |
f34b2bcf | 1208 | int64_t bytes, BdrvRequestFlags flags) |
c56ac27d | 1209 | { |
f34b2bcf | 1210 | return qemu_rbd_start_co(bs, offset, bytes, NULL, flags, |
c56ac27d PL |
1211 | RBD_AIO_WRITE_ZEROES); |
1212 | } | |
1213 | #endif | |
1214 | ||
ad32e9c0 | 1215 | static int qemu_rbd_getinfo(BlockDriverState *bs, BlockDriverInfo *bdi) |
f27aaf4b CB |
1216 | { |
1217 | BDRVRBDState *s = bs->opaque; | |
832a93dc | 1218 | bdi->cluster_size = s->object_size; |
f27aaf4b CB |
1219 | return 0; |
1220 | } | |
1221 | ||
42e4ac9e OO |
1222 | static ImageInfoSpecific *qemu_rbd_get_specific_info(BlockDriverState *bs, |
1223 | Error **errp) | |
1224 | { | |
1225 | BDRVRBDState *s = bs->opaque; | |
1226 | ImageInfoSpecific *spec_info; | |
1227 | char buf[RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN] = {0}; | |
1228 | int r; | |
1229 | ||
1230 | if (s->image_size >= RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN) { | |
1231 | r = rbd_read(s->image, 0, | |
1232 | RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN, buf); | |
1233 | if (r < 0) { | |
1234 | error_setg_errno(errp, -r, "cannot read image start for probe"); | |
1235 | return NULL; | |
1236 | } | |
1237 | } | |
1238 | ||
1239 | spec_info = g_new(ImageInfoSpecific, 1); | |
1240 | *spec_info = (ImageInfoSpecific){ | |
1241 | .type = IMAGE_INFO_SPECIFIC_KIND_RBD, | |
1242 | .u.rbd.data = g_new0(ImageInfoSpecificRbd, 1), | |
1243 | }; | |
1244 | ||
1245 | if (memcmp(buf, rbd_luks_header_verification, | |
1246 | RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN) == 0) { | |
1247 | spec_info->u.rbd.data->encryption_format = | |
1248 | RBD_IMAGE_ENCRYPTION_FORMAT_LUKS; | |
1249 | spec_info->u.rbd.data->has_encryption_format = true; | |
1250 | } else if (memcmp(buf, rbd_luks2_header_verification, | |
1251 | RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN) == 0) { | |
1252 | spec_info->u.rbd.data->encryption_format = | |
1253 | RBD_IMAGE_ENCRYPTION_FORMAT_LUKS2; | |
1254 | spec_info->u.rbd.data->has_encryption_format = true; | |
1255 | } else { | |
1256 | spec_info->u.rbd.data->has_encryption_format = false; | |
1257 | } | |
1258 | ||
1259 | return spec_info; | |
1260 | } | |
1261 | ||
ad32e9c0 | 1262 | static int64_t qemu_rbd_getlength(BlockDriverState *bs) |
f27aaf4b CB |
1263 | { |
1264 | BDRVRBDState *s = bs->opaque; | |
ad32e9c0 | 1265 | int r; |
f27aaf4b | 1266 | |
6d921418 | 1267 | r = rbd_get_size(s->image, &s->image_size); |
ad32e9c0 JD |
1268 | if (r < 0) { |
1269 | return r; | |
1270 | } | |
1271 | ||
6d921418 | 1272 | return s->image_size; |
f27aaf4b CB |
1273 | } |
1274 | ||
061ca8a3 KW |
1275 | static int coroutine_fn qemu_rbd_co_truncate(BlockDriverState *bs, |
1276 | int64_t offset, | |
c80d8b06 | 1277 | bool exact, |
061ca8a3 | 1278 | PreallocMode prealloc, |
92b92799 | 1279 | BdrvRequestFlags flags, |
061ca8a3 | 1280 | Error **errp) |
30cdc48c | 1281 | { |
30cdc48c JD |
1282 | int r; |
1283 | ||
8243ccb7 HR |
1284 | if (prealloc != PREALLOC_MODE_OFF) { |
1285 | error_setg(errp, "Unsupported preallocation mode '%s'", | |
977c736f | 1286 | PreallocMode_str(prealloc)); |
8243ccb7 HR |
1287 | return -ENOTSUP; |
1288 | } | |
1289 | ||
d24f8023 | 1290 | r = qemu_rbd_resize(bs, offset); |
30cdc48c | 1291 | if (r < 0) { |
f59adb32 | 1292 | error_setg_errno(errp, -r, "Failed to resize file"); |
30cdc48c JD |
1293 | return r; |
1294 | } | |
1295 | ||
1296 | return 0; | |
1297 | } | |
1298 | ||
ad32e9c0 JD |
1299 | static int qemu_rbd_snap_create(BlockDriverState *bs, |
1300 | QEMUSnapshotInfo *sn_info) | |
f27aaf4b CB |
1301 | { |
1302 | BDRVRBDState *s = bs->opaque; | |
f27aaf4b | 1303 | int r; |
f27aaf4b CB |
1304 | |
1305 | if (sn_info->name[0] == '\0') { | |
1306 | return -EINVAL; /* we need a name for rbd snapshots */ | |
1307 | } | |
1308 | ||
1309 | /* | |
1310 | * rbd snapshots are using the name as the user controlled unique identifier | |
1311 | * we can't use the rbd snapid for that purpose, as it can't be set | |
1312 | */ | |
1313 | if (sn_info->id_str[0] != '\0' && | |
1314 | strcmp(sn_info->id_str, sn_info->name) != 0) { | |
1315 | return -EINVAL; | |
1316 | } | |
1317 | ||
1318 | if (strlen(sn_info->name) >= sizeof(sn_info->id_str)) { | |
1319 | return -ERANGE; | |
1320 | } | |
1321 | ||
ad32e9c0 | 1322 | r = rbd_snap_create(s->image, sn_info->name); |
f27aaf4b | 1323 | if (r < 0) { |
ad32e9c0 | 1324 | error_report("failed to create snap: %s", strerror(-r)); |
f27aaf4b CB |
1325 | return r; |
1326 | } | |
1327 | ||
f27aaf4b CB |
1328 | return 0; |
1329 | } | |
1330 | ||
bd603247 | 1331 | static int qemu_rbd_snap_remove(BlockDriverState *bs, |
a89d89d3 WX |
1332 | const char *snapshot_id, |
1333 | const char *snapshot_name, | |
1334 | Error **errp) | |
bd603247 GF |
1335 | { |
1336 | BDRVRBDState *s = bs->opaque; | |
1337 | int r; | |
1338 | ||
a89d89d3 WX |
1339 | if (!snapshot_name) { |
1340 | error_setg(errp, "rbd need a valid snapshot name"); | |
1341 | return -EINVAL; | |
1342 | } | |
1343 | ||
1344 | /* If snapshot_id is specified, it must be equal to name, see | |
1345 | qemu_rbd_snap_list() */ | |
1346 | if (snapshot_id && strcmp(snapshot_id, snapshot_name)) { | |
1347 | error_setg(errp, | |
1348 | "rbd do not support snapshot id, it should be NULL or " | |
1349 | "equal to snapshot name"); | |
1350 | return -EINVAL; | |
1351 | } | |
1352 | ||
bd603247 | 1353 | r = rbd_snap_remove(s->image, snapshot_name); |
a89d89d3 WX |
1354 | if (r < 0) { |
1355 | error_setg_errno(errp, -r, "Failed to remove the snapshot"); | |
1356 | } | |
bd603247 GF |
1357 | return r; |
1358 | } | |
1359 | ||
1360 | static int qemu_rbd_snap_rollback(BlockDriverState *bs, | |
1361 | const char *snapshot_name) | |
1362 | { | |
1363 | BDRVRBDState *s = bs->opaque; | |
bd603247 | 1364 | |
9be38598 | 1365 | return rbd_snap_rollback(s->image, snapshot_name); |
bd603247 GF |
1366 | } |
1367 | ||
ad32e9c0 JD |
1368 | static int qemu_rbd_snap_list(BlockDriverState *bs, |
1369 | QEMUSnapshotInfo **psn_tab) | |
f27aaf4b CB |
1370 | { |
1371 | BDRVRBDState *s = bs->opaque; | |
f27aaf4b | 1372 | QEMUSnapshotInfo *sn_info, *sn_tab = NULL; |
ad32e9c0 JD |
1373 | int i, snap_count; |
1374 | rbd_snap_info_t *snaps; | |
1375 | int max_snaps = RBD_MAX_SNAPS; | |
f27aaf4b | 1376 | |
ad32e9c0 | 1377 | do { |
02c4f26b | 1378 | snaps = g_new(rbd_snap_info_t, max_snaps); |
ad32e9c0 | 1379 | snap_count = rbd_snap_list(s->image, snaps, &max_snaps); |
9e6337d0 | 1380 | if (snap_count <= 0) { |
7267c094 | 1381 | g_free(snaps); |
f27aaf4b | 1382 | } |
ad32e9c0 | 1383 | } while (snap_count == -ERANGE); |
f27aaf4b | 1384 | |
ad32e9c0 | 1385 | if (snap_count <= 0) { |
b9c53290 | 1386 | goto done; |
f27aaf4b CB |
1387 | } |
1388 | ||
5839e53b | 1389 | sn_tab = g_new0(QEMUSnapshotInfo, snap_count); |
f27aaf4b | 1390 | |
ad32e9c0 JD |
1391 | for (i = 0; i < snap_count; i++) { |
1392 | const char *snap_name = snaps[i].name; | |
f27aaf4b CB |
1393 | |
1394 | sn_info = sn_tab + i; | |
1395 | pstrcpy(sn_info->id_str, sizeof(sn_info->id_str), snap_name); | |
1396 | pstrcpy(sn_info->name, sizeof(sn_info->name), snap_name); | |
f27aaf4b | 1397 | |
ad32e9c0 | 1398 | sn_info->vm_state_size = snaps[i].size; |
f27aaf4b CB |
1399 | sn_info->date_sec = 0; |
1400 | sn_info->date_nsec = 0; | |
1401 | sn_info->vm_clock_nsec = 0; | |
1402 | } | |
ad32e9c0 | 1403 | rbd_snap_list_end(snaps); |
9e6337d0 | 1404 | g_free(snaps); |
ad32e9c0 | 1405 | |
b9c53290 | 1406 | done: |
f27aaf4b | 1407 | *psn_tab = sn_tab; |
f27aaf4b | 1408 | return snap_count; |
f27aaf4b CB |
1409 | } |
1410 | ||
2b148f39 PB |
1411 | static void coroutine_fn qemu_rbd_co_invalidate_cache(BlockDriverState *bs, |
1412 | Error **errp) | |
be217884 AC |
1413 | { |
1414 | BDRVRBDState *s = bs->opaque; | |
1415 | int r = rbd_invalidate_cache(s->image); | |
1416 | if (r < 0) { | |
1417 | error_setg_errno(errp, -r, "Failed to invalidate the cache"); | |
1418 | } | |
1419 | } | |
be217884 | 1420 | |
bd0cf596 CL |
1421 | static QemuOptsList qemu_rbd_create_opts = { |
1422 | .name = "rbd-create-opts", | |
1423 | .head = QTAILQ_HEAD_INITIALIZER(qemu_rbd_create_opts.head), | |
1424 | .desc = { | |
1425 | { | |
1426 | .name = BLOCK_OPT_SIZE, | |
1427 | .type = QEMU_OPT_SIZE, | |
1428 | .help = "Virtual disk size" | |
1429 | }, | |
1430 | { | |
1431 | .name = BLOCK_OPT_CLUSTER_SIZE, | |
1432 | .type = QEMU_OPT_SIZE, | |
1433 | .help = "RBD object size" | |
1434 | }, | |
60390a21 DB |
1435 | { |
1436 | .name = "password-secret", | |
1437 | .type = QEMU_OPT_STRING, | |
1438 | .help = "ID of secret providing the password", | |
1439 | }, | |
42e4ac9e OO |
1440 | { |
1441 | .name = "encrypt.format", | |
1442 | .type = QEMU_OPT_STRING, | |
1443 | .help = "Encrypt the image, format choices: 'luks', 'luks2'", | |
1444 | }, | |
1445 | { | |
1446 | .name = "encrypt.cipher-alg", | |
1447 | .type = QEMU_OPT_STRING, | |
1448 | .help = "Name of encryption cipher algorithm" | |
1449 | " (allowed values: aes-128, aes-256)", | |
1450 | }, | |
1451 | { | |
1452 | .name = "encrypt.key-secret", | |
1453 | .type = QEMU_OPT_STRING, | |
1454 | .help = "ID of secret providing LUKS passphrase", | |
1455 | }, | |
bd0cf596 CL |
1456 | { /* end of list */ } |
1457 | } | |
f27aaf4b CB |
1458 | }; |
1459 | ||
2654267c HR |
1460 | static const char *const qemu_rbd_strong_runtime_opts[] = { |
1461 | "pool", | |
7bae7c80 | 1462 | "namespace", |
2654267c HR |
1463 | "image", |
1464 | "conf", | |
1465 | "snapshot", | |
1466 | "user", | |
1467 | "server.", | |
1468 | "password-secret", | |
1469 | ||
1470 | NULL | |
1471 | }; | |
1472 | ||
f27aaf4b | 1473 | static BlockDriver bdrv_rbd = { |
c7cacb3e JC |
1474 | .format_name = "rbd", |
1475 | .instance_size = sizeof(BDRVRBDState), | |
1476 | .bdrv_parse_filename = qemu_rbd_parse_filename, | |
1477 | .bdrv_file_open = qemu_rbd_open, | |
1478 | .bdrv_close = qemu_rbd_close, | |
56e7cf8d | 1479 | .bdrv_reopen_prepare = qemu_rbd_reopen_prepare, |
1bebea37 | 1480 | .bdrv_co_create = qemu_rbd_co_create, |
efc75e2a | 1481 | .bdrv_co_create_opts = qemu_rbd_co_create_opts, |
c7cacb3e JC |
1482 | .bdrv_has_zero_init = bdrv_has_zero_init_1, |
1483 | .bdrv_get_info = qemu_rbd_getinfo, | |
42e4ac9e | 1484 | .bdrv_get_specific_info = qemu_rbd_get_specific_info, |
c7cacb3e JC |
1485 | .create_opts = &qemu_rbd_create_opts, |
1486 | .bdrv_getlength = qemu_rbd_getlength, | |
061ca8a3 | 1487 | .bdrv_co_truncate = qemu_rbd_co_truncate, |
c7cacb3e | 1488 | .protocol_name = "rbd", |
f27aaf4b | 1489 | |
c3e5fac5 PL |
1490 | .bdrv_co_preadv = qemu_rbd_co_preadv, |
1491 | .bdrv_co_pwritev = qemu_rbd_co_pwritev, | |
1492 | .bdrv_co_flush_to_disk = qemu_rbd_co_flush, | |
1493 | .bdrv_co_pdiscard = qemu_rbd_co_pdiscard, | |
c56ac27d PL |
1494 | #ifdef LIBRBD_SUPPORTS_WRITE_ZEROES |
1495 | .bdrv_co_pwrite_zeroes = qemu_rbd_co_pwrite_zeroes, | |
1496 | #endif | |
787f3133 | 1497 | |
c68b89ac | 1498 | .bdrv_snapshot_create = qemu_rbd_snap_create, |
bd603247 | 1499 | .bdrv_snapshot_delete = qemu_rbd_snap_remove, |
c68b89ac | 1500 | .bdrv_snapshot_list = qemu_rbd_snap_list, |
bd603247 | 1501 | .bdrv_snapshot_goto = qemu_rbd_snap_rollback, |
2b148f39 | 1502 | .bdrv_co_invalidate_cache = qemu_rbd_co_invalidate_cache, |
2654267c HR |
1503 | |
1504 | .strong_runtime_opts = qemu_rbd_strong_runtime_opts, | |
f27aaf4b CB |
1505 | }; |
1506 | ||
1507 | static void bdrv_rbd_init(void) | |
1508 | { | |
1509 | bdrv_register(&bdrv_rbd); | |
1510 | } | |
1511 | ||
1512 | block_init(bdrv_rbd_init); |