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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" |
e2c1c34f | 21 | #include "block/block-io.h" |
737e150e | 22 | #include "block/block_int.h" |
609f45ea | 23 | #include "block/qdict.h" |
60390a21 | 24 | #include "crypto/secret.h" |
f348b6d1 | 25 | #include "qemu/cutils.h" |
e4ec5ad4 | 26 | #include "sysemu/replay.h" |
c7cacb3e | 27 | #include "qapi/qmp/qstring.h" |
452fcdbc | 28 | #include "qapi/qmp/qdict.h" |
e98c6961 | 29 | #include "qapi/qmp/qjson.h" |
47e6b297 | 30 | #include "qapi/qmp/qlist.h" |
4bfb2741 KW |
31 | #include "qapi/qobject-input-visitor.h" |
32 | #include "qapi/qapi-visit-block-core.h" | |
f27aaf4b | 33 | |
f27aaf4b CB |
34 | /* |
35 | * When specifying the image filename use: | |
36 | * | |
fab5cf59 | 37 | * rbd:poolname/devicename[@snapshotname][:option1=value1[:option2=value2...]] |
f27aaf4b | 38 | * |
9e1fbcde | 39 | * poolname must be the name of an existing rados pool. |
f27aaf4b | 40 | * |
9e1fbcde | 41 | * devicename is the name of the rbd image. |
f27aaf4b | 42 | * |
9e1fbcde SW |
43 | * Each option given is used to configure rados, and may be any valid |
44 | * Ceph option, "id", or "conf". | |
fab5cf59 | 45 | * |
9e1fbcde SW |
46 | * The "id" option indicates what user we should authenticate as to |
47 | * the Ceph cluster. If it is excluded we will use the Ceph default | |
48 | * (normally 'admin'). | |
f27aaf4b | 49 | * |
9e1fbcde SW |
50 | * The "conf" option specifies a Ceph configuration file to read. If |
51 | * it is not specified, we will read from the default Ceph locations | |
52 | * (e.g., /etc/ceph/ceph.conf). To avoid reading _any_ configuration | |
53 | * file, specify conf=/dev/null. | |
f27aaf4b | 54 | * |
9e1fbcde SW |
55 | * Configuration values containing :, @, or = can be escaped with a |
56 | * leading "\". | |
f27aaf4b CB |
57 | */ |
58 | ||
59 | #define OBJ_MAX_SIZE (1UL << OBJ_DEFAULT_OBJ_ORDER) | |
60 | ||
ad32e9c0 JD |
61 | #define RBD_MAX_SNAPS 100 |
62 | ||
42e4ac9e OO |
63 | #define RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN 8 |
64 | ||
65 | static const char rbd_luks_header_verification[ | |
66 | RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN] = { | |
67 | 'L', 'U', 'K', 'S', 0xBA, 0xBE, 0, 1 | |
68 | }; | |
69 | ||
70 | static const char rbd_luks2_header_verification[ | |
71 | RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN] = { | |
72 | 'L', 'U', 'K', 'S', 0xBA, 0xBE, 0, 2 | |
73 | }; | |
74 | ||
787f3133 JD |
75 | typedef enum { |
76 | RBD_AIO_READ, | |
77 | RBD_AIO_WRITE, | |
dc7588c1 | 78 | RBD_AIO_DISCARD, |
c56ac27d PL |
79 | RBD_AIO_FLUSH, |
80 | RBD_AIO_WRITE_ZEROES | |
787f3133 JD |
81 | } RBDAIOCmd; |
82 | ||
f27aaf4b | 83 | typedef struct BDRVRBDState { |
ad32e9c0 JD |
84 | rados_t cluster; |
85 | rados_ioctx_t io_ctx; | |
86 | rbd_image_t image; | |
80b61a27 | 87 | char *image_name; |
ad32e9c0 | 88 | char *snap; |
19ae9ae0 | 89 | char *namespace; |
d24f8023 | 90 | uint64_t image_size; |
832a93dc | 91 | uint64_t object_size; |
f27aaf4b CB |
92 | } BDRVRBDState; |
93 | ||
c3e5fac5 PL |
94 | typedef struct RBDTask { |
95 | BlockDriverState *bs; | |
96 | Coroutine *co; | |
97 | bool complete; | |
98 | int64_t ret; | |
99 | } RBDTask; | |
100 | ||
0347a8fd PL |
101 | typedef struct RBDDiffIterateReq { |
102 | uint64_t offs; | |
103 | uint64_t bytes; | |
104 | bool exists; | |
105 | } RBDDiffIterateReq; | |
106 | ||
aa045c2d KW |
107 | static int qemu_rbd_connect(rados_t *cluster, rados_ioctx_t *io_ctx, |
108 | BlockdevOptionsRbd *opts, bool cache, | |
109 | const char *keypairs, const char *secretid, | |
110 | Error **errp); | |
111 | ||
2b99cfce CK |
112 | static char *qemu_rbd_strchr(char *src, char delim) |
113 | { | |
114 | char *p; | |
115 | ||
116 | for (p = src; *p; ++p) { | |
117 | if (*p == delim) { | |
118 | return p; | |
119 | } | |
120 | if (*p == '\\' && p[1] != '\0') { | |
121 | ++p; | |
122 | } | |
123 | } | |
124 | ||
125 | return NULL; | |
126 | } | |
127 | ||
128 | ||
730b00bb | 129 | static char *qemu_rbd_next_tok(char *src, char delim, char **p) |
f27aaf4b | 130 | { |
f27aaf4b CB |
131 | char *end; |
132 | ||
133 | *p = NULL; | |
134 | ||
2b99cfce CK |
135 | end = qemu_rbd_strchr(src, delim); |
136 | if (end) { | |
8efb339d MA |
137 | *p = end + 1; |
138 | *end = '\0'; | |
139 | } | |
7830f909 | 140 | return src; |
f27aaf4b CB |
141 | } |
142 | ||
16a06b24 SW |
143 | static void qemu_rbd_unescape(char *src) |
144 | { | |
145 | char *p; | |
146 | ||
147 | for (p = src; *src; ++src, ++p) { | |
148 | if (*src == '\\' && src[1] != '\0') { | |
149 | src++; | |
150 | } | |
151 | *p = *src; | |
152 | } | |
153 | *p = '\0'; | |
154 | } | |
155 | ||
c7cacb3e JC |
156 | static void qemu_rbd_parse_filename(const char *filename, QDict *options, |
157 | Error **errp) | |
f27aaf4b CB |
158 | { |
159 | const char *start; | |
e98c6961 EB |
160 | char *p, *buf; |
161 | QList *keypairs = NULL; | |
19ae9ae0 | 162 | char *found_str, *image_name; |
f27aaf4b CB |
163 | |
164 | if (!strstart(filename, "rbd:", &start)) { | |
d61563b2 | 165 | error_setg(errp, "File name must start with 'rbd:'"); |
c7cacb3e | 166 | return; |
f27aaf4b CB |
167 | } |
168 | ||
7267c094 | 169 | buf = g_strdup(start); |
f27aaf4b CB |
170 | p = buf; |
171 | ||
730b00bb | 172 | found_str = qemu_rbd_next_tok(p, '/', &p); |
7830f909 | 173 | if (!p) { |
7830f909 | 174 | error_setg(errp, "Pool name is required"); |
f27aaf4b CB |
175 | goto done; |
176 | } | |
7830f909 | 177 | qemu_rbd_unescape(found_str); |
46f5ac20 | 178 | qdict_put_str(options, "pool", found_str); |
fab5cf59 | 179 | |
2b99cfce | 180 | if (qemu_rbd_strchr(p, '@')) { |
19ae9ae0 | 181 | image_name = qemu_rbd_next_tok(p, '@', &p); |
7830f909 | 182 | |
730b00bb | 183 | found_str = qemu_rbd_next_tok(p, ':', &p); |
7830f909 | 184 | qemu_rbd_unescape(found_str); |
46f5ac20 | 185 | qdict_put_str(options, "snapshot", found_str); |
fab5cf59 | 186 | } else { |
19ae9ae0 FF |
187 | image_name = qemu_rbd_next_tok(p, ':', &p); |
188 | } | |
189 | /* Check for namespace in the image_name */ | |
2b99cfce | 190 | if (qemu_rbd_strchr(image_name, '/')) { |
19ae9ae0 | 191 | found_str = qemu_rbd_next_tok(image_name, '/', &image_name); |
7830f909 | 192 | qemu_rbd_unescape(found_str); |
19ae9ae0 FF |
193 | qdict_put_str(options, "namespace", found_str); |
194 | } else { | |
195 | qdict_put_str(options, "namespace", ""); | |
f27aaf4b | 196 | } |
19ae9ae0 FF |
197 | qemu_rbd_unescape(image_name); |
198 | qdict_put_str(options, "image", image_name); | |
7830f909 | 199 | if (!p) { |
f27aaf4b CB |
200 | goto done; |
201 | } | |
202 | ||
c7cacb3e JC |
203 | /* The following are essentially all key/value pairs, and we treat |
204 | * 'id' and 'conf' a bit special. Key/value pairs may be in any order. */ | |
205 | while (p) { | |
206 | char *name, *value; | |
730b00bb | 207 | name = qemu_rbd_next_tok(p, '=', &p); |
c7cacb3e JC |
208 | if (!p) { |
209 | error_setg(errp, "conf option %s has no value", name); | |
210 | break; | |
7c7e9df0 | 211 | } |
c7cacb3e JC |
212 | |
213 | qemu_rbd_unescape(name); | |
214 | ||
730b00bb | 215 | value = qemu_rbd_next_tok(p, ':', &p); |
c7cacb3e JC |
216 | qemu_rbd_unescape(value); |
217 | ||
218 | if (!strcmp(name, "conf")) { | |
46f5ac20 | 219 | qdict_put_str(options, "conf", value); |
c7cacb3e | 220 | } else if (!strcmp(name, "id")) { |
46f5ac20 | 221 | qdict_put_str(options, "user", value); |
c7cacb3e | 222 | } else { |
e98c6961 EB |
223 | /* |
224 | * We pass these internally to qemu_rbd_set_keypairs(), so | |
225 | * we can get away with the simpler list of [ "key1", | |
226 | * "value1", "key2", "value2" ] rather than a raw dict | |
227 | * { "key1": "value1", "key2": "value2" } where we can't | |
228 | * guarantee order, or even a more correct but complex | |
229 | * [ { "key1": "value1" }, { "key2": "value2" } ] | |
230 | */ | |
231 | if (!keypairs) { | |
232 | keypairs = qlist_new(); | |
c7cacb3e | 233 | } |
46f5ac20 EB |
234 | qlist_append_str(keypairs, name); |
235 | qlist_append_str(keypairs, value); | |
c7cacb3e | 236 | } |
7c7e9df0 | 237 | } |
c7cacb3e | 238 | |
e98c6961 EB |
239 | if (keypairs) { |
240 | qdict_put(options, "=keyvalue-pairs", | |
eab3a467 | 241 | qstring_from_gstring(qobject_to_json(QOBJECT(keypairs)))); |
c7cacb3e JC |
242 | } |
243 | ||
c7cacb3e | 244 | done: |
c7cacb3e | 245 | g_free(buf); |
cb3e7f08 | 246 | qobject_unref(keypairs); |
c7cacb3e | 247 | return; |
7c7e9df0 SW |
248 | } |
249 | ||
d083f954 | 250 | static int qemu_rbd_set_auth(rados_t cluster, BlockdevOptionsRbd *opts, |
60390a21 DB |
251 | Error **errp) |
252 | { | |
d083f954 | 253 | char *key, *acr; |
a3699de4 MA |
254 | int r; |
255 | GString *accu; | |
256 | RbdAuthModeList *auth; | |
257 | ||
d083f954 MA |
258 | if (opts->key_secret) { |
259 | key = qcrypto_secret_lookup_as_base64(opts->key_secret, errp); | |
260 | if (!key) { | |
261 | return -EIO; | |
262 | } | |
263 | r = rados_conf_set(cluster, "key", key); | |
264 | g_free(key); | |
265 | if (r < 0) { | |
266 | error_setg_errno(errp, -r, "Could not set 'key'"); | |
267 | return r; | |
a3699de4 | 268 | } |
60390a21 DB |
269 | } |
270 | ||
a3699de4 MA |
271 | if (opts->has_auth_client_required) { |
272 | accu = g_string_new(""); | |
273 | for (auth = opts->auth_client_required; auth; auth = auth->next) { | |
274 | if (accu->str[0]) { | |
275 | g_string_append_c(accu, ';'); | |
276 | } | |
277 | g_string_append(accu, RbdAuthMode_str(auth->value)); | |
278 | } | |
279 | acr = g_string_free(accu, FALSE); | |
280 | r = rados_conf_set(cluster, "auth_client_required", acr); | |
281 | g_free(acr); | |
282 | if (r < 0) { | |
283 | error_setg_errno(errp, -r, | |
284 | "Could not set 'auth_client_required'"); | |
285 | return r; | |
286 | } | |
287 | } | |
60390a21 DB |
288 | |
289 | return 0; | |
290 | } | |
291 | ||
e98c6961 | 292 | static int qemu_rbd_set_keypairs(rados_t cluster, const char *keypairs_json, |
c7cacb3e | 293 | Error **errp) |
fab5cf59 | 294 | { |
e98c6961 EB |
295 | QList *keypairs; |
296 | QString *name; | |
297 | QString *value; | |
298 | const char *key; | |
299 | size_t remaining; | |
fab5cf59 JD |
300 | int ret = 0; |
301 | ||
e98c6961 EB |
302 | if (!keypairs_json) { |
303 | return ret; | |
304 | } | |
7dc847eb HR |
305 | keypairs = qobject_to(QList, |
306 | qobject_from_json(keypairs_json, &error_abort)); | |
e98c6961 EB |
307 | remaining = qlist_size(keypairs) / 2; |
308 | assert(remaining); | |
309 | ||
310 | while (remaining--) { | |
7dc847eb HR |
311 | name = qobject_to(QString, qlist_pop(keypairs)); |
312 | value = qobject_to(QString, qlist_pop(keypairs)); | |
e98c6961 EB |
313 | assert(name && value); |
314 | key = qstring_get_str(name); | |
315 | ||
316 | ret = rados_conf_set(cluster, key, qstring_get_str(value)); | |
cb3e7f08 | 317 | qobject_unref(value); |
c7cacb3e | 318 | if (ret < 0) { |
e98c6961 | 319 | error_setg_errno(errp, -ret, "invalid conf option %s", key); |
cb3e7f08 | 320 | qobject_unref(name); |
c7cacb3e JC |
321 | ret = -EINVAL; |
322 | break; | |
fab5cf59 | 323 | } |
cb3e7f08 | 324 | qobject_unref(name); |
fab5cf59 JD |
325 | } |
326 | ||
cb3e7f08 | 327 | qobject_unref(keypairs); |
fab5cf59 JD |
328 | return ret; |
329 | } | |
330 | ||
42e4ac9e OO |
331 | #ifdef LIBRBD_SUPPORTS_ENCRYPTION |
332 | static int qemu_rbd_convert_luks_options( | |
333 | RbdEncryptionOptionsLUKSBase *luks_opts, | |
334 | char **passphrase, | |
335 | size_t *passphrase_len, | |
336 | Error **errp) | |
337 | { | |
338 | return qcrypto_secret_lookup(luks_opts->key_secret, (uint8_t **)passphrase, | |
339 | passphrase_len, errp); | |
340 | } | |
341 | ||
342 | static int qemu_rbd_convert_luks_create_options( | |
343 | RbdEncryptionCreateOptionsLUKSBase *luks_opts, | |
344 | rbd_encryption_algorithm_t *alg, | |
345 | char **passphrase, | |
346 | size_t *passphrase_len, | |
347 | Error **errp) | |
348 | { | |
349 | int r = 0; | |
350 | ||
351 | r = qemu_rbd_convert_luks_options( | |
352 | qapi_RbdEncryptionCreateOptionsLUKSBase_base(luks_opts), | |
353 | passphrase, passphrase_len, errp); | |
354 | if (r < 0) { | |
355 | return r; | |
356 | } | |
357 | ||
358 | if (luks_opts->has_cipher_alg) { | |
359 | switch (luks_opts->cipher_alg) { | |
360 | case QCRYPTO_CIPHER_ALG_AES_128: { | |
361 | *alg = RBD_ENCRYPTION_ALGORITHM_AES128; | |
362 | break; | |
363 | } | |
364 | case QCRYPTO_CIPHER_ALG_AES_256: { | |
365 | *alg = RBD_ENCRYPTION_ALGORITHM_AES256; | |
366 | break; | |
367 | } | |
368 | default: { | |
369 | r = -ENOTSUP; | |
370 | error_setg_errno(errp, -r, "unknown encryption algorithm: %u", | |
371 | luks_opts->cipher_alg); | |
372 | return r; | |
373 | } | |
374 | } | |
375 | } else { | |
376 | /* default alg */ | |
377 | *alg = RBD_ENCRYPTION_ALGORITHM_AES256; | |
378 | } | |
379 | ||
380 | return 0; | |
381 | } | |
382 | ||
383 | static int qemu_rbd_encryption_format(rbd_image_t image, | |
384 | RbdEncryptionCreateOptions *encrypt, | |
385 | Error **errp) | |
386 | { | |
387 | int r = 0; | |
388 | g_autofree char *passphrase = NULL; | |
389 | size_t passphrase_len; | |
390 | rbd_encryption_format_t format; | |
391 | rbd_encryption_options_t opts; | |
392 | rbd_encryption_luks1_format_options_t luks_opts; | |
393 | rbd_encryption_luks2_format_options_t luks2_opts; | |
394 | size_t opts_size; | |
395 | uint64_t raw_size, effective_size; | |
396 | ||
397 | r = rbd_get_size(image, &raw_size); | |
398 | if (r < 0) { | |
399 | error_setg_errno(errp, -r, "cannot get raw image size"); | |
400 | return r; | |
401 | } | |
402 | ||
403 | switch (encrypt->format) { | |
404 | case RBD_IMAGE_ENCRYPTION_FORMAT_LUKS: { | |
405 | memset(&luks_opts, 0, sizeof(luks_opts)); | |
406 | format = RBD_ENCRYPTION_FORMAT_LUKS1; | |
407 | opts = &luks_opts; | |
408 | opts_size = sizeof(luks_opts); | |
409 | r = qemu_rbd_convert_luks_create_options( | |
410 | qapi_RbdEncryptionCreateOptionsLUKS_base(&encrypt->u.luks), | |
411 | &luks_opts.alg, &passphrase, &passphrase_len, errp); | |
412 | if (r < 0) { | |
413 | return r; | |
414 | } | |
415 | luks_opts.passphrase = passphrase; | |
416 | luks_opts.passphrase_size = passphrase_len; | |
417 | break; | |
418 | } | |
419 | case RBD_IMAGE_ENCRYPTION_FORMAT_LUKS2: { | |
420 | memset(&luks2_opts, 0, sizeof(luks2_opts)); | |
421 | format = RBD_ENCRYPTION_FORMAT_LUKS2; | |
422 | opts = &luks2_opts; | |
423 | opts_size = sizeof(luks2_opts); | |
424 | r = qemu_rbd_convert_luks_create_options( | |
425 | qapi_RbdEncryptionCreateOptionsLUKS2_base( | |
426 | &encrypt->u.luks2), | |
427 | &luks2_opts.alg, &passphrase, &passphrase_len, errp); | |
428 | if (r < 0) { | |
429 | return r; | |
430 | } | |
431 | luks2_opts.passphrase = passphrase; | |
432 | luks2_opts.passphrase_size = passphrase_len; | |
433 | break; | |
434 | } | |
435 | default: { | |
436 | r = -ENOTSUP; | |
437 | error_setg_errno( | |
438 | errp, -r, "unknown image encryption format: %u", | |
439 | encrypt->format); | |
440 | return r; | |
441 | } | |
442 | } | |
443 | ||
444 | r = rbd_encryption_format(image, format, opts, opts_size); | |
445 | if (r < 0) { | |
446 | error_setg_errno(errp, -r, "encryption format fail"); | |
447 | return r; | |
448 | } | |
449 | ||
450 | r = rbd_get_size(image, &effective_size); | |
451 | if (r < 0) { | |
452 | error_setg_errno(errp, -r, "cannot get effective image size"); | |
453 | return r; | |
454 | } | |
455 | ||
456 | r = rbd_resize(image, raw_size + (raw_size - effective_size)); | |
457 | if (r < 0) { | |
458 | error_setg_errno(errp, -r, "cannot resize image after format"); | |
459 | return r; | |
460 | } | |
461 | ||
462 | return 0; | |
463 | } | |
464 | ||
465 | static int qemu_rbd_encryption_load(rbd_image_t image, | |
466 | RbdEncryptionOptions *encrypt, | |
467 | Error **errp) | |
468 | { | |
469 | int r = 0; | |
470 | g_autofree char *passphrase = NULL; | |
471 | size_t passphrase_len; | |
472 | rbd_encryption_luks1_format_options_t luks_opts; | |
473 | rbd_encryption_luks2_format_options_t luks2_opts; | |
474 | rbd_encryption_format_t format; | |
475 | rbd_encryption_options_t opts; | |
476 | size_t opts_size; | |
477 | ||
478 | switch (encrypt->format) { | |
479 | case RBD_IMAGE_ENCRYPTION_FORMAT_LUKS: { | |
480 | memset(&luks_opts, 0, sizeof(luks_opts)); | |
481 | format = RBD_ENCRYPTION_FORMAT_LUKS1; | |
482 | opts = &luks_opts; | |
483 | opts_size = sizeof(luks_opts); | |
484 | r = qemu_rbd_convert_luks_options( | |
485 | qapi_RbdEncryptionOptionsLUKS_base(&encrypt->u.luks), | |
486 | &passphrase, &passphrase_len, errp); | |
487 | if (r < 0) { | |
488 | return r; | |
489 | } | |
490 | luks_opts.passphrase = passphrase; | |
491 | luks_opts.passphrase_size = passphrase_len; | |
492 | break; | |
493 | } | |
494 | case RBD_IMAGE_ENCRYPTION_FORMAT_LUKS2: { | |
495 | memset(&luks2_opts, 0, sizeof(luks2_opts)); | |
496 | format = RBD_ENCRYPTION_FORMAT_LUKS2; | |
497 | opts = &luks2_opts; | |
498 | opts_size = sizeof(luks2_opts); | |
499 | r = qemu_rbd_convert_luks_options( | |
500 | qapi_RbdEncryptionOptionsLUKS2_base(&encrypt->u.luks2), | |
501 | &passphrase, &passphrase_len, errp); | |
502 | if (r < 0) { | |
503 | return r; | |
504 | } | |
505 | luks2_opts.passphrase = passphrase; | |
506 | luks2_opts.passphrase_size = passphrase_len; | |
507 | break; | |
508 | } | |
509 | default: { | |
510 | r = -ENOTSUP; | |
511 | error_setg_errno( | |
512 | errp, -r, "unknown image encryption format: %u", | |
513 | encrypt->format); | |
514 | return r; | |
515 | } | |
516 | } | |
517 | ||
518 | r = rbd_encryption_load(image, format, opts, opts_size); | |
519 | if (r < 0) { | |
520 | error_setg_errno(errp, -r, "encryption load fail"); | |
521 | return r; | |
522 | } | |
523 | ||
524 | return 0; | |
525 | } | |
526 | #endif | |
527 | ||
d083f954 | 528 | /* FIXME Deprecate and remove keypairs or make it available in QMP. */ |
1bebea37 KW |
529 | static int qemu_rbd_do_create(BlockdevCreateOptions *options, |
530 | const char *keypairs, const char *password_secret, | |
531 | Error **errp) | |
f27aaf4b | 532 | { |
1bebea37 | 533 | BlockdevCreateOptionsRbd *opts = &options->u.rbd; |
ad32e9c0 JD |
534 | rados_t cluster; |
535 | rados_ioctx_t io_ctx; | |
1bebea37 KW |
536 | int obj_order = 0; |
537 | int ret; | |
538 | ||
539 | assert(options->driver == BLOCKDEV_DRIVER_RBD); | |
54fde4ff | 540 | if (opts->location->snapshot) { |
1bebea37 KW |
541 | error_setg(errp, "Can't use snapshot name for image creation"); |
542 | return -EINVAL; | |
543 | } | |
f27aaf4b | 544 | |
42e4ac9e | 545 | #ifndef LIBRBD_SUPPORTS_ENCRYPTION |
54fde4ff | 546 | if (opts->encrypt) { |
42e4ac9e OO |
547 | error_setg(errp, "RBD library does not support image encryption"); |
548 | return -ENOTSUP; | |
549 | } | |
550 | #endif | |
551 | ||
1bebea37 KW |
552 | if (opts->has_cluster_size) { |
553 | int64_t objsize = opts->cluster_size; | |
bd0cf596 CL |
554 | if ((objsize - 1) & objsize) { /* not a power of 2? */ |
555 | error_setg(errp, "obj size needs to be power of 2"); | |
1bebea37 | 556 | return -EINVAL; |
bd0cf596 CL |
557 | } |
558 | if (objsize < 4096) { | |
559 | error_setg(errp, "obj size too small"); | |
1bebea37 | 560 | return -EINVAL; |
f27aaf4b | 561 | } |
786a4ea8 | 562 | obj_order = ctz32(objsize); |
f27aaf4b CB |
563 | } |
564 | ||
aa045c2d KW |
565 | ret = qemu_rbd_connect(&cluster, &io_ctx, opts->location, false, keypairs, |
566 | password_secret, errp); | |
87cd3d20 | 567 | if (ret < 0) { |
1bebea37 | 568 | return ret; |
f27aaf4b CB |
569 | } |
570 | ||
1bebea37 | 571 | ret = rbd_create(io_ctx, opts->location->image, opts->size, &obj_order); |
87cd3d20 VU |
572 | if (ret < 0) { |
573 | error_setg_errno(errp, -ret, "error rbd create"); | |
aa045c2d | 574 | goto out; |
87cd3d20 | 575 | } |
f27aaf4b | 576 | |
42e4ac9e | 577 | #ifdef LIBRBD_SUPPORTS_ENCRYPTION |
54fde4ff | 578 | if (opts->encrypt) { |
42e4ac9e OO |
579 | rbd_image_t image; |
580 | ||
581 | ret = rbd_open(io_ctx, opts->location->image, &image, NULL); | |
582 | if (ret < 0) { | |
583 | error_setg_errno(errp, -ret, | |
584 | "error opening image '%s' for encryption format", | |
585 | opts->location->image); | |
586 | goto out; | |
587 | } | |
588 | ||
589 | ret = qemu_rbd_encryption_format(image, opts->encrypt, errp); | |
590 | rbd_close(image); | |
591 | if (ret < 0) { | |
592 | /* encryption format fail, try removing the image */ | |
593 | rbd_remove(io_ctx, opts->location->image); | |
594 | goto out; | |
595 | } | |
596 | } | |
597 | #endif | |
598 | ||
1bebea37 | 599 | ret = 0; |
aa045c2d KW |
600 | out: |
601 | rados_ioctx_destroy(io_ctx); | |
e38f643a | 602 | rados_shutdown(cluster); |
1bebea37 KW |
603 | return ret; |
604 | } | |
605 | ||
606 | static int qemu_rbd_co_create(BlockdevCreateOptions *options, Error **errp) | |
607 | { | |
608 | return qemu_rbd_do_create(options, NULL, NULL, errp); | |
609 | } | |
610 | ||
42e4ac9e OO |
611 | static int qemu_rbd_extract_encryption_create_options( |
612 | QemuOpts *opts, | |
613 | RbdEncryptionCreateOptions **spec, | |
614 | Error **errp) | |
615 | { | |
616 | QDict *opts_qdict; | |
617 | QDict *encrypt_qdict; | |
618 | Visitor *v; | |
619 | int ret = 0; | |
620 | ||
621 | opts_qdict = qemu_opts_to_qdict(opts, NULL); | |
622 | qdict_extract_subqdict(opts_qdict, &encrypt_qdict, "encrypt."); | |
623 | qobject_unref(opts_qdict); | |
624 | if (!qdict_size(encrypt_qdict)) { | |
625 | *spec = NULL; | |
626 | goto exit; | |
627 | } | |
628 | ||
629 | /* Convert options into a QAPI object */ | |
630 | v = qobject_input_visitor_new_flat_confused(encrypt_qdict, errp); | |
631 | if (!v) { | |
632 | ret = -EINVAL; | |
633 | goto exit; | |
634 | } | |
635 | ||
636 | visit_type_RbdEncryptionCreateOptions(v, NULL, spec, errp); | |
637 | visit_free(v); | |
638 | if (!*spec) { | |
639 | ret = -EINVAL; | |
640 | goto exit; | |
641 | } | |
642 | ||
643 | exit: | |
644 | qobject_unref(encrypt_qdict); | |
645 | return ret; | |
646 | } | |
647 | ||
b92902df ML |
648 | static int coroutine_fn qemu_rbd_co_create_opts(BlockDriver *drv, |
649 | const char *filename, | |
1bebea37 KW |
650 | QemuOpts *opts, |
651 | Error **errp) | |
652 | { | |
653 | BlockdevCreateOptions *create_options; | |
654 | BlockdevCreateOptionsRbd *rbd_opts; | |
655 | BlockdevOptionsRbd *loc; | |
42e4ac9e | 656 | RbdEncryptionCreateOptions *encrypt = NULL; |
1bebea37 KW |
657 | Error *local_err = NULL; |
658 | const char *keypairs, *password_secret; | |
659 | QDict *options = NULL; | |
660 | int ret = 0; | |
661 | ||
662 | create_options = g_new0(BlockdevCreateOptions, 1); | |
663 | create_options->driver = BLOCKDEV_DRIVER_RBD; | |
664 | rbd_opts = &create_options->u.rbd; | |
665 | ||
666 | rbd_opts->location = g_new0(BlockdevOptionsRbd, 1); | |
667 | ||
668 | password_secret = qemu_opt_get(opts, "password-secret"); | |
669 | ||
670 | /* Read out options */ | |
671 | rbd_opts->size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), | |
672 | BDRV_SECTOR_SIZE); | |
673 | rbd_opts->cluster_size = qemu_opt_get_size_del(opts, | |
674 | BLOCK_OPT_CLUSTER_SIZE, 0); | |
675 | rbd_opts->has_cluster_size = (rbd_opts->cluster_size != 0); | |
676 | ||
677 | options = qdict_new(); | |
678 | qemu_rbd_parse_filename(filename, options, &local_err); | |
679 | if (local_err) { | |
680 | ret = -EINVAL; | |
681 | error_propagate(errp, local_err); | |
682 | goto exit; | |
683 | } | |
684 | ||
42e4ac9e OO |
685 | ret = qemu_rbd_extract_encryption_create_options(opts, &encrypt, errp); |
686 | if (ret < 0) { | |
687 | goto exit; | |
688 | } | |
689 | rbd_opts->encrypt = encrypt; | |
42e4ac9e | 690 | |
1bebea37 KW |
691 | /* |
692 | * Caution: while qdict_get_try_str() is fine, getting non-string | |
693 | * types would require more care. When @options come from -blockdev | |
694 | * or blockdev_add, its members are typed according to the QAPI | |
695 | * schema, but when they come from -drive, they're all QString. | |
696 | */ | |
697 | loc = rbd_opts->location; | |
19ae9ae0 FF |
698 | loc->pool = g_strdup(qdict_get_try_str(options, "pool")); |
699 | loc->conf = g_strdup(qdict_get_try_str(options, "conf")); | |
19ae9ae0 | 700 | loc->user = g_strdup(qdict_get_try_str(options, "user")); |
19ae9ae0 FF |
701 | loc->q_namespace = g_strdup(qdict_get_try_str(options, "namespace")); |
702 | loc->image = g_strdup(qdict_get_try_str(options, "image")); | |
703 | keypairs = qdict_get_try_str(options, "=keyvalue-pairs"); | |
1bebea37 KW |
704 | |
705 | ret = qemu_rbd_do_create(create_options, keypairs, password_secret, errp); | |
706 | if (ret < 0) { | |
707 | goto exit; | |
708 | } | |
c7cacb3e JC |
709 | |
710 | exit: | |
cb3e7f08 | 711 | qobject_unref(options); |
1bebea37 | 712 | qapi_free_BlockdevCreateOptions(create_options); |
f27aaf4b CB |
713 | return ret; |
714 | } | |
715 | ||
4bfb2741 | 716 | static char *qemu_rbd_mon_host(BlockdevOptionsRbd *opts, Error **errp) |
0a55679b | 717 | { |
4bfb2741 | 718 | const char **vals; |
2836284d MA |
719 | const char *host, *port; |
720 | char *rados_str; | |
4bfb2741 KW |
721 | InetSocketAddressBaseList *p; |
722 | int i, cnt; | |
723 | ||
724 | if (!opts->has_server) { | |
725 | return NULL; | |
726 | } | |
727 | ||
728 | for (cnt = 0, p = opts->server; p; p = p->next) { | |
729 | cnt++; | |
730 | } | |
731 | ||
732 | vals = g_new(const char *, cnt + 1); | |
733 | ||
734 | for (i = 0, p = opts->server; p; p = p->next, i++) { | |
735 | host = p->value->host; | |
736 | port = p->value->port; | |
0a55679b | 737 | |
2836284d | 738 | if (strchr(host, ':')) { |
4bfb2741 | 739 | vals[i] = g_strdup_printf("[%s]:%s", host, port); |
0a55679b | 740 | } else { |
4bfb2741 | 741 | vals[i] = g_strdup_printf("%s:%s", host, port); |
0a55679b | 742 | } |
0a55679b | 743 | } |
2836284d | 744 | vals[i] = NULL; |
0a55679b | 745 | |
2836284d | 746 | rados_str = i ? g_strjoinv(";", (char **)vals) : NULL; |
2836284d | 747 | g_strfreev((char **)vals); |
0a55679b JC |
748 | return rados_str; |
749 | } | |
750 | ||
3d9136f9 | 751 | static int qemu_rbd_connect(rados_t *cluster, rados_ioctx_t *io_ctx, |
4bfb2741 | 752 | BlockdevOptionsRbd *opts, bool cache, |
4ff45049 KW |
753 | const char *keypairs, const char *secretid, |
754 | Error **errp) | |
f27aaf4b | 755 | { |
0a55679b | 756 | char *mon_host = NULL; |
3d9136f9 | 757 | Error *local_err = NULL; |
f27aaf4b CB |
758 | int r; |
759 | ||
d083f954 MA |
760 | if (secretid) { |
761 | if (opts->key_secret) { | |
762 | error_setg(errp, | |
763 | "Legacy 'password-secret' clashes with 'key-secret'"); | |
764 | return -EINVAL; | |
765 | } | |
766 | opts->key_secret = g_strdup(secretid); | |
d083f954 MA |
767 | } |
768 | ||
4bfb2741 | 769 | mon_host = qemu_rbd_mon_host(opts, &local_err); |
0a55679b JC |
770 | if (local_err) { |
771 | error_propagate(errp, local_err); | |
772 | r = -EINVAL; | |
c1c1f6cf | 773 | goto out; |
0a55679b JC |
774 | } |
775 | ||
4bfb2741 | 776 | r = rados_create(cluster, opts->user); |
ad32e9c0 | 777 | if (r < 0) { |
87cd3d20 | 778 | error_setg_errno(errp, -r, "error initializing"); |
c1c1f6cf | 779 | goto out; |
f27aaf4b CB |
780 | } |
781 | ||
c7cacb3e | 782 | /* try default location when conf=NULL, but ignore failure */ |
4bfb2741 | 783 | r = rados_conf_read_file(*cluster, opts->conf); |
54fde4ff | 784 | if (opts->conf && r < 0) { |
4bfb2741 | 785 | error_setg_errno(errp, -r, "error reading conf file %s", opts->conf); |
c7cacb3e | 786 | goto failed_shutdown; |
99a3c89d JD |
787 | } |
788 | ||
3d9136f9 | 789 | r = qemu_rbd_set_keypairs(*cluster, keypairs, errp); |
c7cacb3e JC |
790 | if (r < 0) { |
791 | goto failed_shutdown; | |
99a3c89d JD |
792 | } |
793 | ||
0a55679b | 794 | if (mon_host) { |
3d9136f9 | 795 | r = rados_conf_set(*cluster, "mon_host", mon_host); |
0a55679b JC |
796 | if (r < 0) { |
797 | goto failed_shutdown; | |
798 | } | |
799 | } | |
800 | ||
d083f954 MA |
801 | r = qemu_rbd_set_auth(*cluster, opts, errp); |
802 | if (r < 0) { | |
60390a21 DB |
803 | goto failed_shutdown; |
804 | } | |
805 | ||
b11f38fc JD |
806 | /* |
807 | * Fallback to more conservative semantics if setting cache | |
808 | * options fails. Ignore errors from setting rbd_cache because the | |
809 | * only possible error is that the option does not exist, and | |
810 | * librbd defaults to no caching. If write through caching cannot | |
811 | * be set up, fall back to no caching. | |
812 | */ | |
3d9136f9 KW |
813 | if (cache) { |
814 | rados_conf_set(*cluster, "rbd_cache", "true"); | |
b11f38fc | 815 | } else { |
3d9136f9 | 816 | rados_conf_set(*cluster, "rbd_cache", "false"); |
b11f38fc JD |
817 | } |
818 | ||
3d9136f9 | 819 | r = rados_connect(*cluster); |
ad32e9c0 | 820 | if (r < 0) { |
87cd3d20 | 821 | error_setg_errno(errp, -r, "error connecting"); |
eb93d5d9 | 822 | goto failed_shutdown; |
f27aaf4b CB |
823 | } |
824 | ||
4bfb2741 | 825 | r = rados_ioctx_create(*cluster, opts->pool, io_ctx); |
ad32e9c0 | 826 | if (r < 0) { |
4bfb2741 | 827 | error_setg_errno(errp, -r, "error opening pool %s", opts->pool); |
eb93d5d9 | 828 | goto failed_shutdown; |
f27aaf4b | 829 | } |
66dc5f96 SG |
830 | |
831 | #ifdef HAVE_RBD_NAMESPACE_EXISTS | |
54fde4ff | 832 | if (opts->q_namespace && strlen(opts->q_namespace) > 0) { |
66dc5f96 SG |
833 | bool exists; |
834 | ||
835 | r = rbd_namespace_exists(*io_ctx, opts->q_namespace, &exists); | |
836 | if (r < 0) { | |
837 | error_setg_errno(errp, -r, "error checking namespace"); | |
838 | goto failed_ioctx_destroy; | |
839 | } | |
840 | ||
841 | if (!exists) { | |
842 | error_setg(errp, "namespace '%s' does not exist", | |
843 | opts->q_namespace); | |
844 | r = -ENOENT; | |
845 | goto failed_ioctx_destroy; | |
846 | } | |
847 | } | |
848 | #endif | |
849 | ||
19ae9ae0 FF |
850 | /* |
851 | * Set the namespace after opening the io context on the pool, | |
852 | * if nspace == NULL or if nspace == "", it is just as we did nothing | |
853 | */ | |
854 | rados_ioctx_set_namespace(*io_ctx, opts->q_namespace); | |
f27aaf4b | 855 | |
c1c1f6cf SG |
856 | r = 0; |
857 | goto out; | |
3d9136f9 | 858 | |
66dc5f96 SG |
859 | #ifdef HAVE_RBD_NAMESPACE_EXISTS |
860 | failed_ioctx_destroy: | |
861 | rados_ioctx_destroy(*io_ctx); | |
862 | #endif | |
3d9136f9 KW |
863 | failed_shutdown: |
864 | rados_shutdown(*cluster); | |
c1c1f6cf | 865 | out: |
3d9136f9 KW |
866 | g_free(mon_host); |
867 | return r; | |
868 | } | |
869 | ||
f24b03b5 JC |
870 | static int qemu_rbd_convert_options(QDict *options, BlockdevOptionsRbd **opts, |
871 | Error **errp) | |
872 | { | |
873 | Visitor *v; | |
f24b03b5 JC |
874 | |
875 | /* Convert the remaining options into a QAPI object */ | |
876 | v = qobject_input_visitor_new_flat_confused(options, errp); | |
877 | if (!v) { | |
878 | return -EINVAL; | |
879 | } | |
880 | ||
b11a093c | 881 | visit_type_BlockdevOptionsRbd(v, NULL, opts, errp); |
f24b03b5 | 882 | visit_free(v); |
b11a093c | 883 | if (!opts) { |
f24b03b5 JC |
884 | return -EINVAL; |
885 | } | |
886 | ||
887 | return 0; | |
888 | } | |
889 | ||
084d1d13 JC |
890 | static int qemu_rbd_attempt_legacy_options(QDict *options, |
891 | BlockdevOptionsRbd **opts, | |
892 | char **keypairs) | |
893 | { | |
894 | char *filename; | |
895 | int r; | |
896 | ||
897 | filename = g_strdup(qdict_get_try_str(options, "filename")); | |
898 | if (!filename) { | |
899 | return -EINVAL; | |
900 | } | |
901 | qdict_del(options, "filename"); | |
902 | ||
903 | qemu_rbd_parse_filename(filename, options, NULL); | |
904 | ||
905 | /* keypairs freed by caller */ | |
906 | *keypairs = g_strdup(qdict_get_try_str(options, "=keyvalue-pairs")); | |
907 | if (*keypairs) { | |
908 | qdict_del(options, "=keyvalue-pairs"); | |
909 | } | |
910 | ||
911 | r = qemu_rbd_convert_options(options, opts, NULL); | |
912 | ||
913 | g_free(filename); | |
914 | return r; | |
915 | } | |
916 | ||
3d9136f9 KW |
917 | static int qemu_rbd_open(BlockDriverState *bs, QDict *options, int flags, |
918 | Error **errp) | |
919 | { | |
920 | BDRVRBDState *s = bs->opaque; | |
4bfb2741 | 921 | BlockdevOptionsRbd *opts = NULL; |
bfb15b4b | 922 | const QDictEntry *e; |
3d9136f9 | 923 | Error *local_err = NULL; |
4ff45049 | 924 | char *keypairs, *secretid; |
832a93dc | 925 | rbd_image_info_t info; |
3d9136f9 KW |
926 | int r; |
927 | ||
4ff45049 KW |
928 | keypairs = g_strdup(qdict_get_try_str(options, "=keyvalue-pairs")); |
929 | if (keypairs) { | |
930 | qdict_del(options, "=keyvalue-pairs"); | |
931 | } | |
932 | ||
933 | secretid = g_strdup(qdict_get_try_str(options, "password-secret")); | |
934 | if (secretid) { | |
935 | qdict_del(options, "password-secret"); | |
936 | } | |
937 | ||
f24b03b5 | 938 | r = qemu_rbd_convert_options(options, &opts, &local_err); |
4bfb2741 | 939 | if (local_err) { |
084d1d13 JC |
940 | /* If keypairs are present, that means some options are present in |
941 | * the modern option format. Don't attempt to parse legacy option | |
942 | * formats, as we won't support mixed usage. */ | |
943 | if (keypairs) { | |
944 | error_propagate(errp, local_err); | |
945 | goto out; | |
946 | } | |
947 | ||
948 | /* If the initial attempt to convert and process the options failed, | |
949 | * we may be attempting to open an image file that has the rbd options | |
950 | * specified in the older format consisting of all key/value pairs | |
951 | * encoded in the filename. Go ahead and attempt to parse the | |
952 | * filename, and see if we can pull out the required options. */ | |
953 | r = qemu_rbd_attempt_legacy_options(options, &opts, &keypairs); | |
954 | if (r < 0) { | |
955 | /* Propagate the original error, not the legacy parsing fallback | |
956 | * error, as the latter was just a best-effort attempt. */ | |
957 | error_propagate(errp, local_err); | |
958 | goto out; | |
959 | } | |
960 | /* Take care whenever deciding to actually deprecate; once this ability | |
961 | * is removed, we will not be able to open any images with legacy-styled | |
962 | * backing image strings. */ | |
5197f445 MA |
963 | warn_report("RBD options encoded in the filename as keyvalue pairs " |
964 | "is deprecated"); | |
4bfb2741 KW |
965 | } |
966 | ||
bfb15b4b JC |
967 | /* Remove the processed options from the QDict (the visitor processes |
968 | * _all_ options in the QDict) */ | |
969 | while ((e = qdict_first(options))) { | |
970 | qdict_del(options, e->key); | |
971 | } | |
972 | ||
d41a5588 KW |
973 | r = qemu_rbd_connect(&s->cluster, &s->io_ctx, opts, |
974 | !(flags & BDRV_O_NOCACHE), keypairs, secretid, errp); | |
3d9136f9 | 975 | if (r < 0) { |
4ff45049 | 976 | goto out; |
3d9136f9 KW |
977 | } |
978 | ||
d41a5588 KW |
979 | s->snap = g_strdup(opts->snapshot); |
980 | s->image_name = g_strdup(opts->image); | |
981 | ||
e2b8247a | 982 | /* rbd_open is always r/w */ |
80b61a27 | 983 | r = rbd_open(s->io_ctx, s->image_name, &s->image, s->snap); |
f27aaf4b | 984 | if (r < 0) { |
80b61a27 JC |
985 | error_setg_errno(errp, -r, "error reading header from %s", |
986 | s->image_name); | |
eb93d5d9 | 987 | goto failed_open; |
f27aaf4b CB |
988 | } |
989 | ||
54fde4ff | 990 | if (opts->encrypt) { |
42e4ac9e OO |
991 | #ifdef LIBRBD_SUPPORTS_ENCRYPTION |
992 | r = qemu_rbd_encryption_load(s->image, opts->encrypt, errp); | |
993 | if (r < 0) { | |
994 | goto failed_post_open; | |
995 | } | |
996 | #else | |
997 | r = -ENOTSUP; | |
998 | error_setg(errp, "RBD library does not support image encryption"); | |
999 | goto failed_post_open; | |
1000 | #endif | |
1001 | } | |
1002 | ||
832a93dc | 1003 | r = rbd_stat(s->image, &info, sizeof(info)); |
d24f8023 | 1004 | if (r < 0) { |
832a93dc | 1005 | error_setg_errno(errp, -r, "error getting image info from %s", |
d24f8023 | 1006 | s->image_name); |
42e4ac9e | 1007 | goto failed_post_open; |
d24f8023 | 1008 | } |
832a93dc PL |
1009 | s->image_size = info.size; |
1010 | s->object_size = info.obj_size; | |
d24f8023 | 1011 | |
e2b8247a JC |
1012 | /* If we are using an rbd snapshot, we must be r/o, otherwise |
1013 | * leave as-is */ | |
1014 | if (s->snap != NULL) { | |
eaa2410f KW |
1015 | r = bdrv_apply_auto_read_only(bs, "rbd snapshots are read-only", errp); |
1016 | if (r < 0) { | |
42e4ac9e | 1017 | goto failed_post_open; |
e2b8247a JC |
1018 | } |
1019 | } | |
f27aaf4b | 1020 | |
c56ac27d PL |
1021 | #ifdef LIBRBD_SUPPORTS_WRITE_ZEROES |
1022 | bs->supported_zero_flags = BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK; | |
1023 | #endif | |
1024 | ||
2f98910d EB |
1025 | /* When extending regular files, we get zeros from the OS */ |
1026 | bs->supported_truncate_flags = BDRV_REQ_ZERO_WRITE; | |
1027 | ||
4ff45049 KW |
1028 | r = 0; |
1029 | goto out; | |
f27aaf4b | 1030 | |
42e4ac9e OO |
1031 | failed_post_open: |
1032 | rbd_close(s->image); | |
eb93d5d9 | 1033 | failed_open: |
ad32e9c0 | 1034 | rados_ioctx_destroy(s->io_ctx); |
eb93d5d9 | 1035 | g_free(s->snap); |
80b61a27 | 1036 | g_free(s->image_name); |
3d9136f9 | 1037 | rados_shutdown(s->cluster); |
4ff45049 | 1038 | out: |
4bfb2741 | 1039 | qapi_free_BlockdevOptionsRbd(opts); |
4ff45049 KW |
1040 | g_free(keypairs); |
1041 | g_free(secretid); | |
f27aaf4b CB |
1042 | return r; |
1043 | } | |
1044 | ||
56e7cf8d JC |
1045 | |
1046 | /* Since RBD is currently always opened R/W via the API, | |
1047 | * we just need to check if we are using a snapshot or not, in | |
1048 | * order to determine if we will allow it to be R/W */ | |
1049 | static int qemu_rbd_reopen_prepare(BDRVReopenState *state, | |
1050 | BlockReopenQueue *queue, Error **errp) | |
1051 | { | |
1052 | BDRVRBDState *s = state->bs->opaque; | |
1053 | int ret = 0; | |
1054 | ||
1055 | if (s->snap && state->flags & BDRV_O_RDWR) { | |
1056 | error_setg(errp, | |
1057 | "Cannot change node '%s' to r/w when using RBD snapshot", | |
1058 | bdrv_get_device_or_node_name(state->bs)); | |
1059 | ret = -EINVAL; | |
1060 | } | |
1061 | ||
1062 | return ret; | |
1063 | } | |
1064 | ||
ad32e9c0 | 1065 | static void qemu_rbd_close(BlockDriverState *bs) |
f27aaf4b CB |
1066 | { |
1067 | BDRVRBDState *s = bs->opaque; | |
1068 | ||
ad32e9c0 JD |
1069 | rbd_close(s->image); |
1070 | rados_ioctx_destroy(s->io_ctx); | |
7267c094 | 1071 | g_free(s->snap); |
80b61a27 | 1072 | g_free(s->image_name); |
ad32e9c0 | 1073 | rados_shutdown(s->cluster); |
f27aaf4b CB |
1074 | } |
1075 | ||
d24f8023 SG |
1076 | /* Resize the RBD image and update the 'image_size' with the current size */ |
1077 | static int qemu_rbd_resize(BlockDriverState *bs, uint64_t size) | |
1078 | { | |
1079 | BDRVRBDState *s = bs->opaque; | |
1080 | int r; | |
1081 | ||
1082 | r = rbd_resize(s->image, size); | |
1083 | if (r < 0) { | |
1084 | return r; | |
1085 | } | |
1086 | ||
1087 | s->image_size = size; | |
1088 | ||
1089 | return 0; | |
1090 | } | |
1091 | ||
c3e5fac5 | 1092 | static void qemu_rbd_finish_bh(void *opaque) |
f27aaf4b | 1093 | { |
c3e5fac5 | 1094 | RBDTask *task = opaque; |
64cc845b | 1095 | task->complete = true; |
c3e5fac5 | 1096 | aio_co_wake(task->co); |
ad32e9c0 JD |
1097 | } |
1098 | ||
1099 | /* | |
c3e5fac5 PL |
1100 | * This is the completion callback function for all rbd aio calls |
1101 | * started from qemu_rbd_start_co(). | |
ad32e9c0 JD |
1102 | * |
1103 | * Note: this function is being called from a non qemu thread so | |
1104 | * we need to be careful about what we do here. Generally we only | |
e04fb07f | 1105 | * schedule a BH, and do the rest of the io completion handling |
c3e5fac5 | 1106 | * from qemu_rbd_finish_bh() which runs in a qemu context. |
ad32e9c0 | 1107 | */ |
c3e5fac5 | 1108 | static void qemu_rbd_completion_cb(rbd_completion_t c, RBDTask *task) |
ad32e9c0 | 1109 | { |
c3e5fac5 | 1110 | task->ret = rbd_aio_get_return_value(c); |
ad32e9c0 | 1111 | rbd_aio_release(c); |
c3e5fac5 PL |
1112 | aio_bh_schedule_oneshot(bdrv_get_aio_context(task->bs), |
1113 | qemu_rbd_finish_bh, task); | |
f27aaf4b CB |
1114 | } |
1115 | ||
c3e5fac5 PL |
1116 | static int coroutine_fn qemu_rbd_start_co(BlockDriverState *bs, |
1117 | uint64_t offset, | |
1118 | uint64_t bytes, | |
1119 | QEMUIOVector *qiov, | |
1120 | int flags, | |
1121 | RBDAIOCmd cmd) | |
f27aaf4b | 1122 | { |
c3e5fac5 PL |
1123 | BDRVRBDState *s = bs->opaque; |
1124 | RBDTask task = { .bs = bs, .co = qemu_coroutine_self() }; | |
ad32e9c0 | 1125 | rbd_completion_t c; |
51a13528 | 1126 | int r; |
f27aaf4b | 1127 | |
c3e5fac5 | 1128 | assert(!qiov || qiov->size == bytes); |
1d393bde | 1129 | |
cc5387a5 SG |
1130 | if (cmd == RBD_AIO_WRITE || cmd == RBD_AIO_WRITE_ZEROES) { |
1131 | /* | |
1132 | * RBD APIs don't allow us to write more than actual size, so in order | |
1133 | * to support growing images, we resize the image before write | |
1134 | * operations that exceed the current size. | |
1135 | */ | |
1136 | if (offset + bytes > s->image_size) { | |
1137 | int r = qemu_rbd_resize(bs, offset + bytes); | |
1138 | if (r < 0) { | |
1139 | return r; | |
1140 | } | |
1141 | } | |
1142 | } | |
1143 | ||
c3e5fac5 PL |
1144 | r = rbd_aio_create_completion(&task, |
1145 | (rbd_callback_t) qemu_rbd_completion_cb, &c); | |
51a13528 | 1146 | if (r < 0) { |
c3e5fac5 | 1147 | return r; |
51a13528 | 1148 | } |
f27aaf4b | 1149 | |
787f3133 | 1150 | switch (cmd) { |
787f3133 | 1151 | case RBD_AIO_READ: |
c3e5fac5 PL |
1152 | r = rbd_aio_readv(s->image, qiov->iov, qiov->niov, offset, c); |
1153 | break; | |
1154 | case RBD_AIO_WRITE: | |
1155 | r = rbd_aio_writev(s->image, qiov->iov, qiov->niov, offset, c); | |
787f3133 JD |
1156 | break; |
1157 | case RBD_AIO_DISCARD: | |
c3e5fac5 | 1158 | r = rbd_aio_discard(s->image, offset, bytes, c); |
787f3133 | 1159 | break; |
dc7588c1 | 1160 | case RBD_AIO_FLUSH: |
48672ac0 | 1161 | r = rbd_aio_flush(s->image, c); |
dc7588c1 | 1162 | break; |
c56ac27d PL |
1163 | #ifdef LIBRBD_SUPPORTS_WRITE_ZEROES |
1164 | case RBD_AIO_WRITE_ZEROES: { | |
1165 | int zero_flags = 0; | |
1166 | #ifdef RBD_WRITE_ZEROES_FLAG_THICK_PROVISION | |
1167 | if (!(flags & BDRV_REQ_MAY_UNMAP)) { | |
1168 | zero_flags = RBD_WRITE_ZEROES_FLAG_THICK_PROVISION; | |
1169 | } | |
1170 | #endif | |
1171 | r = rbd_aio_write_zeroes(s->image, offset, bytes, c, zero_flags, 0); | |
1172 | break; | |
1173 | } | |
1174 | #endif | |
787f3133 JD |
1175 | default: |
1176 | r = -EINVAL; | |
51a13528 JD |
1177 | } |
1178 | ||
1179 | if (r < 0) { | |
c3e5fac5 PL |
1180 | error_report("rbd request failed early: cmd %d offset %" PRIu64 |
1181 | " bytes %" PRIu64 " flags %d r %d (%s)", cmd, offset, | |
1182 | bytes, flags, r, strerror(-r)); | |
1183 | rbd_aio_release(c); | |
1184 | return r; | |
f27aaf4b | 1185 | } |
51a13528 | 1186 | |
c3e5fac5 PL |
1187 | while (!task.complete) { |
1188 | qemu_coroutine_yield(); | |
1189 | } | |
1d393bde | 1190 | |
c3e5fac5 PL |
1191 | if (task.ret < 0) { |
1192 | error_report("rbd request failed: cmd %d offset %" PRIu64 " bytes %" | |
1193 | PRIu64 " flags %d task.ret %" PRIi64 " (%s)", cmd, offset, | |
1194 | bytes, flags, task.ret, strerror(-task.ret)); | |
1195 | return task.ret; | |
1196 | } | |
1197 | ||
1198 | /* zero pad short reads */ | |
1199 | if (cmd == RBD_AIO_READ && task.ret < qiov->size) { | |
1200 | qemu_iovec_memset(qiov, task.ret, 0, qiov->size - task.ret); | |
1201 | } | |
1202 | ||
1203 | return 0; | |
1204 | } | |
1205 | ||
1206 | static int | |
f7ef38dd VSO |
1207 | coroutine_fn qemu_rbd_co_preadv(BlockDriverState *bs, int64_t offset, |
1208 | int64_t bytes, QEMUIOVector *qiov, | |
1209 | BdrvRequestFlags flags) | |
c3e5fac5 PL |
1210 | { |
1211 | return qemu_rbd_start_co(bs, offset, bytes, qiov, flags, RBD_AIO_READ); | |
f27aaf4b CB |
1212 | } |
1213 | ||
c3e5fac5 | 1214 | static int |
e75abeda VSO |
1215 | coroutine_fn qemu_rbd_co_pwritev(BlockDriverState *bs, int64_t offset, |
1216 | int64_t bytes, QEMUIOVector *qiov, | |
1217 | BdrvRequestFlags flags) | |
f27aaf4b | 1218 | { |
c3e5fac5 | 1219 | return qemu_rbd_start_co(bs, offset, bytes, qiov, flags, RBD_AIO_WRITE); |
f27aaf4b CB |
1220 | } |
1221 | ||
c3e5fac5 | 1222 | static int coroutine_fn qemu_rbd_co_flush(BlockDriverState *bs) |
f27aaf4b | 1223 | { |
c3e5fac5 | 1224 | return qemu_rbd_start_co(bs, 0, 0, NULL, 0, RBD_AIO_FLUSH); |
f27aaf4b CB |
1225 | } |
1226 | ||
c3e5fac5 | 1227 | static int coroutine_fn qemu_rbd_co_pdiscard(BlockDriverState *bs, |
0c802287 | 1228 | int64_t offset, int64_t bytes) |
dc7588c1 | 1229 | { |
0c802287 | 1230 | return qemu_rbd_start_co(bs, offset, bytes, NULL, 0, RBD_AIO_DISCARD); |
dc7588c1 JD |
1231 | } |
1232 | ||
c56ac27d PL |
1233 | #ifdef LIBRBD_SUPPORTS_WRITE_ZEROES |
1234 | static int | |
1235 | coroutine_fn qemu_rbd_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset, | |
f34b2bcf | 1236 | int64_t bytes, BdrvRequestFlags flags) |
c56ac27d | 1237 | { |
f34b2bcf | 1238 | return qemu_rbd_start_co(bs, offset, bytes, NULL, flags, |
c56ac27d PL |
1239 | RBD_AIO_WRITE_ZEROES); |
1240 | } | |
1241 | #endif | |
1242 | ||
ad32e9c0 | 1243 | static int qemu_rbd_getinfo(BlockDriverState *bs, BlockDriverInfo *bdi) |
f27aaf4b CB |
1244 | { |
1245 | BDRVRBDState *s = bs->opaque; | |
832a93dc | 1246 | bdi->cluster_size = s->object_size; |
f27aaf4b CB |
1247 | return 0; |
1248 | } | |
1249 | ||
42e4ac9e OO |
1250 | static ImageInfoSpecific *qemu_rbd_get_specific_info(BlockDriverState *bs, |
1251 | Error **errp) | |
1252 | { | |
1253 | BDRVRBDState *s = bs->opaque; | |
1254 | ImageInfoSpecific *spec_info; | |
1255 | char buf[RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN] = {0}; | |
1256 | int r; | |
1257 | ||
1258 | if (s->image_size >= RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN) { | |
1259 | r = rbd_read(s->image, 0, | |
1260 | RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN, buf); | |
1261 | if (r < 0) { | |
1262 | error_setg_errno(errp, -r, "cannot read image start for probe"); | |
1263 | return NULL; | |
1264 | } | |
1265 | } | |
1266 | ||
1267 | spec_info = g_new(ImageInfoSpecific, 1); | |
1268 | *spec_info = (ImageInfoSpecific){ | |
1269 | .type = IMAGE_INFO_SPECIFIC_KIND_RBD, | |
1270 | .u.rbd.data = g_new0(ImageInfoSpecificRbd, 1), | |
1271 | }; | |
1272 | ||
1273 | if (memcmp(buf, rbd_luks_header_verification, | |
1274 | RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN) == 0) { | |
1275 | spec_info->u.rbd.data->encryption_format = | |
1276 | RBD_IMAGE_ENCRYPTION_FORMAT_LUKS; | |
1277 | spec_info->u.rbd.data->has_encryption_format = true; | |
1278 | } else if (memcmp(buf, rbd_luks2_header_verification, | |
1279 | RBD_ENCRYPTION_LUKS_HEADER_VERIFICATION_LEN) == 0) { | |
1280 | spec_info->u.rbd.data->encryption_format = | |
1281 | RBD_IMAGE_ENCRYPTION_FORMAT_LUKS2; | |
1282 | spec_info->u.rbd.data->has_encryption_format = true; | |
1283 | } else { | |
1284 | spec_info->u.rbd.data->has_encryption_format = false; | |
1285 | } | |
1286 | ||
1287 | return spec_info; | |
1288 | } | |
1289 | ||
0347a8fd PL |
1290 | /* |
1291 | * rbd_diff_iterate2 allows to interrupt the exection by returning a negative | |
1292 | * value in the callback routine. Choose a value that does not conflict with | |
1293 | * an existing exitcode and return it if we want to prematurely stop the | |
1294 | * execution because we detected a change in the allocation status. | |
1295 | */ | |
1296 | #define QEMU_RBD_EXIT_DIFF_ITERATE2 -9000 | |
1297 | ||
1298 | static int qemu_rbd_diff_iterate_cb(uint64_t offs, size_t len, | |
1299 | int exists, void *opaque) | |
1300 | { | |
1301 | RBDDiffIterateReq *req = opaque; | |
1302 | ||
1303 | assert(req->offs + req->bytes <= offs); | |
9e302f64 PL |
1304 | |
1305 | /* treat a hole like an unallocated area and bail out */ | |
1306 | if (!exists) { | |
1307 | return 0; | |
1308 | } | |
0347a8fd PL |
1309 | |
1310 | if (!req->exists && offs > req->offs) { | |
1311 | /* | |
1312 | * we started in an unallocated area and hit the first allocated | |
1313 | * block. req->bytes must be set to the length of the unallocated area | |
1314 | * before the allocated area. stop further processing. | |
1315 | */ | |
1316 | req->bytes = offs - req->offs; | |
1317 | return QEMU_RBD_EXIT_DIFF_ITERATE2; | |
1318 | } | |
1319 | ||
1320 | if (req->exists && offs > req->offs + req->bytes) { | |
1321 | /* | |
1322 | * we started in an allocated area and jumped over an unallocated area, | |
1323 | * req->bytes contains the length of the allocated area before the | |
1324 | * unallocated area. stop further processing. | |
1325 | */ | |
1326 | return QEMU_RBD_EXIT_DIFF_ITERATE2; | |
1327 | } | |
1328 | ||
1329 | req->bytes += len; | |
1330 | req->exists = true; | |
1331 | ||
1332 | return 0; | |
1333 | } | |
1334 | ||
1335 | static int coroutine_fn qemu_rbd_co_block_status(BlockDriverState *bs, | |
1336 | bool want_zero, int64_t offset, | |
1337 | int64_t bytes, int64_t *pnum, | |
1338 | int64_t *map, | |
1339 | BlockDriverState **file) | |
1340 | { | |
1341 | BDRVRBDState *s = bs->opaque; | |
1342 | int status, r; | |
1343 | RBDDiffIterateReq req = { .offs = offset }; | |
1344 | uint64_t features, flags; | |
fc176116 | 1345 | uint64_t head = 0; |
0347a8fd PL |
1346 | |
1347 | assert(offset + bytes <= s->image_size); | |
1348 | ||
1349 | /* default to all sectors allocated */ | |
1350 | status = BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID; | |
1351 | *map = offset; | |
1352 | *file = bs; | |
1353 | *pnum = bytes; | |
1354 | ||
1355 | /* check if RBD image supports fast-diff */ | |
1356 | r = rbd_get_features(s->image, &features); | |
1357 | if (r < 0) { | |
1358 | return status; | |
1359 | } | |
1360 | if (!(features & RBD_FEATURE_FAST_DIFF)) { | |
1361 | return status; | |
1362 | } | |
1363 | ||
1364 | /* check if RBD fast-diff result is valid */ | |
1365 | r = rbd_get_flags(s->image, &flags); | |
1366 | if (r < 0) { | |
1367 | return status; | |
1368 | } | |
1369 | if (flags & RBD_FLAG_FAST_DIFF_INVALID) { | |
1370 | return status; | |
1371 | } | |
1372 | ||
fc176116 PL |
1373 | #if LIBRBD_VERSION_CODE < LIBRBD_VERSION(1, 17, 0) |
1374 | /* | |
1375 | * librbd had a bug until early 2022 that affected all versions of ceph that | |
1376 | * supported fast-diff. This bug results in reporting of incorrect offsets | |
1377 | * if the offset parameter to rbd_diff_iterate2 is not object aligned. | |
1378 | * Work around this bug by rounding down the offset to object boundaries. | |
1379 | * This is OK because we call rbd_diff_iterate2 with whole_object = true. | |
1380 | * However, this workaround only works for non cloned images with default | |
1381 | * striping. | |
1382 | * | |
1383 | * See: https://tracker.ceph.com/issues/53784 | |
1384 | */ | |
1385 | ||
1386 | /* check if RBD image has non-default striping enabled */ | |
1387 | if (features & RBD_FEATURE_STRIPINGV2) { | |
1388 | return status; | |
1389 | } | |
1390 | ||
1391 | #pragma GCC diagnostic push | |
1392 | #pragma GCC diagnostic ignored "-Wdeprecated-declarations" | |
1393 | /* | |
1394 | * check if RBD image is a clone (= has a parent). | |
1395 | * | |
1396 | * rbd_get_parent_info is deprecated from Nautilus onwards, but the | |
1397 | * replacement rbd_get_parent is not present in Luminous and Mimic. | |
1398 | */ | |
1399 | if (rbd_get_parent_info(s->image, NULL, 0, NULL, 0, NULL, 0) != -ENOENT) { | |
1400 | return status; | |
1401 | } | |
1402 | #pragma GCC diagnostic pop | |
1403 | ||
1404 | head = req.offs & (s->object_size - 1); | |
1405 | req.offs -= head; | |
1406 | bytes += head; | |
1407 | #endif | |
1408 | ||
1409 | r = rbd_diff_iterate2(s->image, NULL, req.offs, bytes, true, true, | |
0347a8fd PL |
1410 | qemu_rbd_diff_iterate_cb, &req); |
1411 | if (r < 0 && r != QEMU_RBD_EXIT_DIFF_ITERATE2) { | |
1412 | return status; | |
1413 | } | |
1414 | assert(req.bytes <= bytes); | |
1415 | if (!req.exists) { | |
1416 | if (r == 0) { | |
1417 | /* | |
1418 | * rbd_diff_iterate2 does not invoke callbacks for unallocated | |
1419 | * areas. This here catches the case where no callback was | |
1420 | * invoked at all (req.bytes == 0). | |
1421 | */ | |
1422 | assert(req.bytes == 0); | |
1423 | req.bytes = bytes; | |
1424 | } | |
1425 | status = BDRV_BLOCK_ZERO | BDRV_BLOCK_OFFSET_VALID; | |
1426 | } | |
1427 | ||
fc176116 PL |
1428 | assert(req.bytes > head); |
1429 | *pnum = req.bytes - head; | |
0347a8fd PL |
1430 | return status; |
1431 | } | |
1432 | ||
c86422c5 | 1433 | static int64_t coroutine_fn qemu_rbd_co_getlength(BlockDriverState *bs) |
f27aaf4b CB |
1434 | { |
1435 | BDRVRBDState *s = bs->opaque; | |
ad32e9c0 | 1436 | int r; |
f27aaf4b | 1437 | |
6d921418 | 1438 | r = rbd_get_size(s->image, &s->image_size); |
ad32e9c0 JD |
1439 | if (r < 0) { |
1440 | return r; | |
1441 | } | |
1442 | ||
6d921418 | 1443 | return s->image_size; |
f27aaf4b CB |
1444 | } |
1445 | ||
061ca8a3 KW |
1446 | static int coroutine_fn qemu_rbd_co_truncate(BlockDriverState *bs, |
1447 | int64_t offset, | |
c80d8b06 | 1448 | bool exact, |
061ca8a3 | 1449 | PreallocMode prealloc, |
92b92799 | 1450 | BdrvRequestFlags flags, |
061ca8a3 | 1451 | Error **errp) |
30cdc48c | 1452 | { |
30cdc48c JD |
1453 | int r; |
1454 | ||
8243ccb7 HR |
1455 | if (prealloc != PREALLOC_MODE_OFF) { |
1456 | error_setg(errp, "Unsupported preallocation mode '%s'", | |
977c736f | 1457 | PreallocMode_str(prealloc)); |
8243ccb7 HR |
1458 | return -ENOTSUP; |
1459 | } | |
1460 | ||
d24f8023 | 1461 | r = qemu_rbd_resize(bs, offset); |
30cdc48c | 1462 | if (r < 0) { |
f59adb32 | 1463 | error_setg_errno(errp, -r, "Failed to resize file"); |
30cdc48c JD |
1464 | return r; |
1465 | } | |
1466 | ||
1467 | return 0; | |
1468 | } | |
1469 | ||
ad32e9c0 JD |
1470 | static int qemu_rbd_snap_create(BlockDriverState *bs, |
1471 | QEMUSnapshotInfo *sn_info) | |
f27aaf4b CB |
1472 | { |
1473 | BDRVRBDState *s = bs->opaque; | |
f27aaf4b | 1474 | int r; |
f27aaf4b CB |
1475 | |
1476 | if (sn_info->name[0] == '\0') { | |
1477 | return -EINVAL; /* we need a name for rbd snapshots */ | |
1478 | } | |
1479 | ||
1480 | /* | |
1481 | * rbd snapshots are using the name as the user controlled unique identifier | |
1482 | * we can't use the rbd snapid for that purpose, as it can't be set | |
1483 | */ | |
1484 | if (sn_info->id_str[0] != '\0' && | |
1485 | strcmp(sn_info->id_str, sn_info->name) != 0) { | |
1486 | return -EINVAL; | |
1487 | } | |
1488 | ||
1489 | if (strlen(sn_info->name) >= sizeof(sn_info->id_str)) { | |
1490 | return -ERANGE; | |
1491 | } | |
1492 | ||
ad32e9c0 | 1493 | r = rbd_snap_create(s->image, sn_info->name); |
f27aaf4b | 1494 | if (r < 0) { |
ad32e9c0 | 1495 | error_report("failed to create snap: %s", strerror(-r)); |
f27aaf4b CB |
1496 | return r; |
1497 | } | |
1498 | ||
f27aaf4b CB |
1499 | return 0; |
1500 | } | |
1501 | ||
bd603247 | 1502 | static int qemu_rbd_snap_remove(BlockDriverState *bs, |
a89d89d3 WX |
1503 | const char *snapshot_id, |
1504 | const char *snapshot_name, | |
1505 | Error **errp) | |
bd603247 GF |
1506 | { |
1507 | BDRVRBDState *s = bs->opaque; | |
1508 | int r; | |
1509 | ||
a89d89d3 WX |
1510 | if (!snapshot_name) { |
1511 | error_setg(errp, "rbd need a valid snapshot name"); | |
1512 | return -EINVAL; | |
1513 | } | |
1514 | ||
1515 | /* If snapshot_id is specified, it must be equal to name, see | |
1516 | qemu_rbd_snap_list() */ | |
1517 | if (snapshot_id && strcmp(snapshot_id, snapshot_name)) { | |
1518 | error_setg(errp, | |
1519 | "rbd do not support snapshot id, it should be NULL or " | |
1520 | "equal to snapshot name"); | |
1521 | return -EINVAL; | |
1522 | } | |
1523 | ||
bd603247 | 1524 | r = rbd_snap_remove(s->image, snapshot_name); |
a89d89d3 WX |
1525 | if (r < 0) { |
1526 | error_setg_errno(errp, -r, "Failed to remove the snapshot"); | |
1527 | } | |
bd603247 GF |
1528 | return r; |
1529 | } | |
1530 | ||
1531 | static int qemu_rbd_snap_rollback(BlockDriverState *bs, | |
1532 | const char *snapshot_name) | |
1533 | { | |
1534 | BDRVRBDState *s = bs->opaque; | |
bd603247 | 1535 | |
9be38598 | 1536 | return rbd_snap_rollback(s->image, snapshot_name); |
bd603247 GF |
1537 | } |
1538 | ||
ad32e9c0 JD |
1539 | static int qemu_rbd_snap_list(BlockDriverState *bs, |
1540 | QEMUSnapshotInfo **psn_tab) | |
f27aaf4b CB |
1541 | { |
1542 | BDRVRBDState *s = bs->opaque; | |
f27aaf4b | 1543 | QEMUSnapshotInfo *sn_info, *sn_tab = NULL; |
ad32e9c0 JD |
1544 | int i, snap_count; |
1545 | rbd_snap_info_t *snaps; | |
1546 | int max_snaps = RBD_MAX_SNAPS; | |
f27aaf4b | 1547 | |
ad32e9c0 | 1548 | do { |
02c4f26b | 1549 | snaps = g_new(rbd_snap_info_t, max_snaps); |
ad32e9c0 | 1550 | snap_count = rbd_snap_list(s->image, snaps, &max_snaps); |
9e6337d0 | 1551 | if (snap_count <= 0) { |
7267c094 | 1552 | g_free(snaps); |
f27aaf4b | 1553 | } |
ad32e9c0 | 1554 | } while (snap_count == -ERANGE); |
f27aaf4b | 1555 | |
ad32e9c0 | 1556 | if (snap_count <= 0) { |
b9c53290 | 1557 | goto done; |
f27aaf4b CB |
1558 | } |
1559 | ||
5839e53b | 1560 | sn_tab = g_new0(QEMUSnapshotInfo, snap_count); |
f27aaf4b | 1561 | |
ad32e9c0 JD |
1562 | for (i = 0; i < snap_count; i++) { |
1563 | const char *snap_name = snaps[i].name; | |
f27aaf4b CB |
1564 | |
1565 | sn_info = sn_tab + i; | |
1566 | pstrcpy(sn_info->id_str, sizeof(sn_info->id_str), snap_name); | |
1567 | pstrcpy(sn_info->name, sizeof(sn_info->name), snap_name); | |
f27aaf4b | 1568 | |
ad32e9c0 | 1569 | sn_info->vm_state_size = snaps[i].size; |
f27aaf4b CB |
1570 | sn_info->date_sec = 0; |
1571 | sn_info->date_nsec = 0; | |
1572 | sn_info->vm_clock_nsec = 0; | |
1573 | } | |
ad32e9c0 | 1574 | rbd_snap_list_end(snaps); |
9e6337d0 | 1575 | g_free(snaps); |
ad32e9c0 | 1576 | |
b9c53290 | 1577 | done: |
f27aaf4b | 1578 | *psn_tab = sn_tab; |
f27aaf4b | 1579 | return snap_count; |
f27aaf4b CB |
1580 | } |
1581 | ||
2b148f39 PB |
1582 | static void coroutine_fn qemu_rbd_co_invalidate_cache(BlockDriverState *bs, |
1583 | Error **errp) | |
be217884 AC |
1584 | { |
1585 | BDRVRBDState *s = bs->opaque; | |
1586 | int r = rbd_invalidate_cache(s->image); | |
1587 | if (r < 0) { | |
1588 | error_setg_errno(errp, -r, "Failed to invalidate the cache"); | |
1589 | } | |
1590 | } | |
be217884 | 1591 | |
bd0cf596 CL |
1592 | static QemuOptsList qemu_rbd_create_opts = { |
1593 | .name = "rbd-create-opts", | |
1594 | .head = QTAILQ_HEAD_INITIALIZER(qemu_rbd_create_opts.head), | |
1595 | .desc = { | |
1596 | { | |
1597 | .name = BLOCK_OPT_SIZE, | |
1598 | .type = QEMU_OPT_SIZE, | |
1599 | .help = "Virtual disk size" | |
1600 | }, | |
1601 | { | |
1602 | .name = BLOCK_OPT_CLUSTER_SIZE, | |
1603 | .type = QEMU_OPT_SIZE, | |
1604 | .help = "RBD object size" | |
1605 | }, | |
60390a21 DB |
1606 | { |
1607 | .name = "password-secret", | |
1608 | .type = QEMU_OPT_STRING, | |
1609 | .help = "ID of secret providing the password", | |
1610 | }, | |
42e4ac9e OO |
1611 | { |
1612 | .name = "encrypt.format", | |
1613 | .type = QEMU_OPT_STRING, | |
1614 | .help = "Encrypt the image, format choices: 'luks', 'luks2'", | |
1615 | }, | |
1616 | { | |
1617 | .name = "encrypt.cipher-alg", | |
1618 | .type = QEMU_OPT_STRING, | |
1619 | .help = "Name of encryption cipher algorithm" | |
1620 | " (allowed values: aes-128, aes-256)", | |
1621 | }, | |
1622 | { | |
1623 | .name = "encrypt.key-secret", | |
1624 | .type = QEMU_OPT_STRING, | |
1625 | .help = "ID of secret providing LUKS passphrase", | |
1626 | }, | |
bd0cf596 CL |
1627 | { /* end of list */ } |
1628 | } | |
f27aaf4b CB |
1629 | }; |
1630 | ||
2654267c HR |
1631 | static const char *const qemu_rbd_strong_runtime_opts[] = { |
1632 | "pool", | |
7bae7c80 | 1633 | "namespace", |
2654267c HR |
1634 | "image", |
1635 | "conf", | |
1636 | "snapshot", | |
1637 | "user", | |
1638 | "server.", | |
1639 | "password-secret", | |
1640 | ||
1641 | NULL | |
1642 | }; | |
1643 | ||
f27aaf4b | 1644 | static BlockDriver bdrv_rbd = { |
c7cacb3e JC |
1645 | .format_name = "rbd", |
1646 | .instance_size = sizeof(BDRVRBDState), | |
1647 | .bdrv_parse_filename = qemu_rbd_parse_filename, | |
1648 | .bdrv_file_open = qemu_rbd_open, | |
1649 | .bdrv_close = qemu_rbd_close, | |
56e7cf8d | 1650 | .bdrv_reopen_prepare = qemu_rbd_reopen_prepare, |
1bebea37 | 1651 | .bdrv_co_create = qemu_rbd_co_create, |
efc75e2a | 1652 | .bdrv_co_create_opts = qemu_rbd_co_create_opts, |
c7cacb3e JC |
1653 | .bdrv_has_zero_init = bdrv_has_zero_init_1, |
1654 | .bdrv_get_info = qemu_rbd_getinfo, | |
42e4ac9e | 1655 | .bdrv_get_specific_info = qemu_rbd_get_specific_info, |
c7cacb3e | 1656 | .create_opts = &qemu_rbd_create_opts, |
c86422c5 | 1657 | .bdrv_co_getlength = qemu_rbd_co_getlength, |
061ca8a3 | 1658 | .bdrv_co_truncate = qemu_rbd_co_truncate, |
c7cacb3e | 1659 | .protocol_name = "rbd", |
f27aaf4b | 1660 | |
c3e5fac5 PL |
1661 | .bdrv_co_preadv = qemu_rbd_co_preadv, |
1662 | .bdrv_co_pwritev = qemu_rbd_co_pwritev, | |
1663 | .bdrv_co_flush_to_disk = qemu_rbd_co_flush, | |
1664 | .bdrv_co_pdiscard = qemu_rbd_co_pdiscard, | |
c56ac27d PL |
1665 | #ifdef LIBRBD_SUPPORTS_WRITE_ZEROES |
1666 | .bdrv_co_pwrite_zeroes = qemu_rbd_co_pwrite_zeroes, | |
1667 | #endif | |
0347a8fd | 1668 | .bdrv_co_block_status = qemu_rbd_co_block_status, |
787f3133 | 1669 | |
c68b89ac | 1670 | .bdrv_snapshot_create = qemu_rbd_snap_create, |
bd603247 | 1671 | .bdrv_snapshot_delete = qemu_rbd_snap_remove, |
c68b89ac | 1672 | .bdrv_snapshot_list = qemu_rbd_snap_list, |
bd603247 | 1673 | .bdrv_snapshot_goto = qemu_rbd_snap_rollback, |
2b148f39 | 1674 | .bdrv_co_invalidate_cache = qemu_rbd_co_invalidate_cache, |
2654267c HR |
1675 | |
1676 | .strong_runtime_opts = qemu_rbd_strong_runtime_opts, | |
f27aaf4b CB |
1677 | }; |
1678 | ||
1679 | static void bdrv_rbd_init(void) | |
1680 | { | |
1681 | bdrv_register(&bdrv_rbd); | |
1682 | } | |
1683 | ||
1684 | block_init(bdrv_rbd_init); |