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Commit | Line | Data |
---|---|---|
23102ed6 | 1 | From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 |
67af0fa4 WB |
2 | From: Wolfgang Bumiller <w.bumiller@proxmox.com> |
3 | Date: Mon, 7 Aug 2017 08:51:16 +0200 | |
23102ed6 | 4 | Subject: [PATCH] adding old vma files |
95259824 | 5 | |
95259824 | 6 | --- |
67af0fa4 WB |
7 | Makefile | 3 +- |
8 | Makefile.objs | 1 + | |
507c2194 | 9 | block/backup.c | 132 ++++--- |
67af0fa4 | 10 | block/replication.c | 1 + |
23102ed6 | 11 | blockdev.c | 249 +++++++++----- |
67af0fa4 WB |
12 | blockjob.c | 11 +- |
13 | include/block/block_int.h | 4 + | |
14 | vma-reader.c | 857 ++++++++++++++++++++++++++++++++++++++++++++++ | |
15 | vma-writer.c | 771 +++++++++++++++++++++++++++++++++++++++++ | |
16 | vma.c | 757 ++++++++++++++++++++++++++++++++++++++++ | |
17 | vma.h | 149 ++++++++ | |
23102ed6 | 18 | 11 files changed, 2802 insertions(+), 133 deletions(-) |
95259824 WB |
19 | create mode 100644 vma-reader.c |
20 | create mode 100644 vma-writer.c | |
21 | create mode 100644 vma.c | |
22 | create mode 100644 vma.h | |
23 | ||
24 | diff --git a/Makefile b/Makefile | |
45169293 | 25 | index 6c359b2f86..edbc8b50f0 100644 |
95259824 WB |
26 | --- a/Makefile |
27 | +++ b/Makefile | |
a544966d | 28 | @@ -284,7 +284,7 @@ ifneq ($(wildcard config-host.mak),) |
95259824 WB |
29 | include $(SRC_PATH)/tests/Makefile.include |
30 | endif | |
31 | ||
32 | -all: $(DOCS) $(TOOLS) $(HELPERS-y) recurse-all modules | |
33 | +all: $(DOCS) $(TOOLS) vma$(EXESUF) $(HELPERS-y) recurse-all modules | |
34 | ||
35 | qemu-version.h: FORCE | |
36 | $(call quiet-command, \ | |
a544966d WB |
37 | @@ -377,6 +377,7 @@ qemu-img.o: qemu-img-cmds.h |
38 | qemu-img$(EXESUF): qemu-img.o $(block-obj-y) $(crypto-obj-y) $(io-obj-y) $(qom-obj-y) $(COMMON_LDADDS) | |
39 | qemu-nbd$(EXESUF): qemu-nbd.o $(block-obj-y) $(crypto-obj-y) $(io-obj-y) $(qom-obj-y) $(COMMON_LDADDS) | |
40 | qemu-io$(EXESUF): qemu-io.o $(block-obj-y) $(crypto-obj-y) $(io-obj-y) $(qom-obj-y) $(COMMON_LDADDS) | |
41 | +vma$(EXESUF): vma.o vma-reader.o $(block-obj-y) $(crypto-obj-y) $(io-obj-y) $(qom-obj-y) $(COMMON_LDADDS) | |
95259824 | 42 | |
a544966d | 43 | qemu-bridge-helper$(EXESUF): qemu-bridge-helper.o $(COMMON_LDADDS) |
95259824 WB |
44 | |
45 | diff --git a/Makefile.objs b/Makefile.objs | |
67af0fa4 | 46 | index fbfbbb7f70..f5f8dbab3b 100644 |
95259824 WB |
47 | --- a/Makefile.objs |
48 | +++ b/Makefile.objs | |
a544966d | 49 | @@ -14,6 +14,7 @@ block-obj-y += block.o blockjob.o |
95259824 WB |
50 | block-obj-y += block/ |
51 | block-obj-y += qemu-io-cmds.o | |
a544966d | 52 | block-obj-$(CONFIG_REPLICATION) += replication.o |
95259824 WB |
53 | +block-obj-y += vma-writer.o |
54 | ||
55 | block-obj-m = block/ | |
56 | ||
67af0fa4 | 57 | diff --git a/block/backup.c b/block/backup.c |
507c2194 | 58 | index 1ede70c061..7c5febc434 100644 |
67af0fa4 WB |
59 | --- a/block/backup.c |
60 | +++ b/block/backup.c | |
61 | @@ -36,6 +36,7 @@ typedef struct BackupBlockJob { | |
62 | BdrvDirtyBitmap *sync_bitmap; | |
63 | MirrorSyncMode sync_mode; | |
64 | RateLimit limit; | |
65 | + BackupDumpFunc *dump_cb; | |
66 | BlockdevOnError on_source_error; | |
67 | BlockdevOnError on_target_error; | |
68 | CoRwlock flush_rwlock; | |
69 | @@ -145,13 +146,24 @@ static int coroutine_fn backup_do_cow(BackupBlockJob *job, | |
70 | goto out; | |
71 | } | |
72 | ||
73 | + int64_t start_sec = start * sectors_per_cluster; | |
74 | if (buffer_is_zero(iov.iov_base, iov.iov_len)) { | |
75 | - ret = blk_co_pwrite_zeroes(job->target, start * job->cluster_size, | |
76 | - bounce_qiov.size, BDRV_REQ_MAY_UNMAP); | |
77 | + if (job->dump_cb) { | |
78 | + ret = job->dump_cb(job->common.opaque, job->target, start_sec, n, NULL); | |
79 | + } | |
80 | + if (job->target) { | |
81 | + ret = blk_co_pwrite_zeroes(job->target, start * job->cluster_size, | |
82 | + bounce_qiov.size, BDRV_REQ_MAY_UNMAP); | |
83 | + } | |
84 | } else { | |
85 | - ret = blk_co_pwritev(job->target, start * job->cluster_size, | |
86 | - bounce_qiov.size, &bounce_qiov, | |
87 | - job->compress ? BDRV_REQ_WRITE_COMPRESSED : 0); | |
88 | + if (job->dump_cb) { | |
89 | + ret = job->dump_cb(job->common.opaque, job->target, start_sec, n, bounce_buffer); | |
90 | + } | |
91 | + if (job->target) { | |
92 | + ret = blk_co_pwritev(job->target, start * job->cluster_size, | |
93 | + bounce_qiov.size, &bounce_qiov, | |
94 | + job->compress ? BDRV_REQ_WRITE_COMPRESSED : 0); | |
95 | + } | |
96 | } | |
97 | if (ret < 0) { | |
98 | trace_backup_do_cow_write_fail(job, start, ret); | |
507c2194 | 99 | @@ -246,6 +258,9 @@ static void backup_abort(BlockJob *job) |
67af0fa4 WB |
100 | static void backup_clean(BlockJob *job) |
101 | { | |
102 | BackupBlockJob *s = container_of(job, BackupBlockJob, common); | |
507c2194 | 103 | + if (!s->target) { |
67af0fa4 | 104 | + return; |
507c2194 | 105 | + } |
67af0fa4 WB |
106 | assert(s->target); |
107 | blk_unref(s->target); | |
108 | s->target = NULL; | |
507c2194 | 109 | @@ -255,7 +270,9 @@ static void backup_attached_aio_context(BlockJob *job, AioContext *aio_context) |
02709230 FG |
110 | { |
111 | BackupBlockJob *s = container_of(job, BackupBlockJob, common); | |
112 | ||
113 | - blk_set_aio_context(s->target, aio_context); | |
507c2194 | 114 | + if (s->target) { |
02709230 | 115 | + blk_set_aio_context(s->target, aio_context); |
507c2194 | 116 | + } |
02709230 FG |
117 | } |
118 | ||
119 | void backup_do_checkpoint(BlockJob *job, Error **errp) | |
507c2194 | 120 | @@ -330,9 +347,11 @@ static BlockErrorAction backup_error_action(BackupBlockJob *job, |
67af0fa4 WB |
121 | if (read) { |
122 | return block_job_error_action(&job->common, job->on_source_error, | |
123 | true, error); | |
124 | - } else { | |
125 | + } else if (job->target) { | |
126 | return block_job_error_action(&job->common, job->on_target_error, | |
127 | false, error); | |
128 | + } else { | |
129 | + return BLOCK_ERROR_ACTION_REPORT; | |
130 | } | |
131 | } | |
132 | ||
507c2194 | 133 | @@ -557,6 +576,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs, |
67af0fa4 WB |
134 | BlockdevOnError on_source_error, |
135 | BlockdevOnError on_target_error, | |
136 | int creation_flags, | |
137 | + BackupDumpFunc *dump_cb, | |
138 | BlockCompletionFunc *cb, void *opaque, | |
139 | int pause_count, | |
140 | BlockJobTxn *txn, Error **errp) | |
507c2194 | 141 | @@ -567,7 +587,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs, |
67af0fa4 WB |
142 | int ret; |
143 | ||
144 | assert(bs); | |
145 | - assert(target); | |
146 | + assert(target || dump_cb); | |
147 | ||
148 | if (bs == target) { | |
149 | error_setg(errp, "Source and target cannot be the same"); | |
507c2194 | 150 | @@ -580,13 +600,13 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs, |
67af0fa4 WB |
151 | return NULL; |
152 | } | |
153 | ||
154 | - if (!bdrv_is_inserted(target)) { | |
155 | + if (target && !bdrv_is_inserted(target)) { | |
156 | error_setg(errp, "Device is not inserted: %s", | |
157 | bdrv_get_device_name(target)); | |
158 | return NULL; | |
159 | } | |
160 | ||
161 | - if (compress && target->drv->bdrv_co_pwritev_compressed == NULL) { | |
162 | + if (target && compress && target->drv->bdrv_co_pwritev_compressed == NULL) { | |
163 | error_setg(errp, "Compression is not supported for this drive %s", | |
164 | bdrv_get_device_name(target)); | |
165 | return NULL; | |
507c2194 | 166 | @@ -596,7 +616,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs, |
67af0fa4 WB |
167 | return NULL; |
168 | } | |
169 | ||
170 | - if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_BACKUP_TARGET, errp)) { | |
171 | + if (target && bdrv_op_is_blocked(target, BLOCK_OP_TYPE_BACKUP_TARGET, errp)) { | |
172 | return NULL; | |
173 | } | |
174 | ||
507c2194 | 175 | @@ -636,15 +656,18 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs, |
67af0fa4 WB |
176 | goto error; |
177 | } | |
178 | ||
179 | - /* The target must match the source in size, so no resize here either */ | |
180 | - job->target = blk_new(BLK_PERM_WRITE, | |
181 | - BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE | | |
182 | - BLK_PERM_WRITE_UNCHANGED | BLK_PERM_GRAPH_MOD); | |
183 | - ret = blk_insert_bs(job->target, target, errp); | |
184 | - if (ret < 0) { | |
185 | - goto error; | |
186 | + if (target) { | |
187 | + /* The target must match the source in size, so no resize here either */ | |
188 | + job->target = blk_new(BLK_PERM_WRITE, | |
189 | + BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE | | |
190 | + BLK_PERM_WRITE_UNCHANGED | BLK_PERM_GRAPH_MOD); | |
191 | + ret = blk_insert_bs(job->target, target, errp); | |
192 | + if (ret < 0) { | |
193 | + goto error; | |
194 | + } | |
195 | } | |
196 | ||
197 | + job->dump_cb = dump_cb; | |
198 | job->on_source_error = on_source_error; | |
199 | job->on_target_error = on_target_error; | |
200 | job->sync_mode = sync_mode; | |
507c2194 | 201 | @@ -652,38 +675,55 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs, |
67af0fa4 WB |
202 | sync_bitmap : NULL; |
203 | job->compress = compress; | |
204 | ||
205 | - /* If there is no backing file on the target, we cannot rely on COW if our | |
206 | - * backup cluster size is smaller than the target cluster size. Even for | |
207 | - * targets with a backing file, try to avoid COW if possible. */ | |
208 | - ret = bdrv_get_info(target, &bdi); | |
209 | - if (ret == -ENOTSUP && !target->backing) { | |
210 | - /* Cluster size is not defined */ | |
211 | - error_report("WARNING: The target block device doesn't provide " | |
212 | - "information about the block size and it doesn't have a " | |
213 | - "backing file. The default block size of %u bytes is " | |
214 | - "used. If the actual block size of the target exceeds " | |
215 | - "this default, the backup may be unusable", | |
216 | - BACKUP_CLUSTER_SIZE_DEFAULT); | |
217 | - job->cluster_size = BACKUP_CLUSTER_SIZE_DEFAULT; | |
218 | - } else if (ret < 0 && !target->backing) { | |
219 | - error_setg_errno(errp, -ret, | |
220 | - "Couldn't determine the cluster size of the target image, " | |
221 | - "which has no backing file"); | |
222 | - error_append_hint(errp, | |
223 | - "Aborting, since this may create an unusable destination image\n"); | |
224 | - goto error; | |
225 | - } else if (ret < 0 && target->backing) { | |
226 | - /* Not fatal; just trudge on ahead. */ | |
227 | - job->cluster_size = BACKUP_CLUSTER_SIZE_DEFAULT; | |
228 | + if (target) { | |
229 | + /* If there is no backing file on the target, we cannot rely on COW if our | |
230 | + * backup cluster size is smaller than the target cluster size. Even for | |
231 | + * targets with a backing file, try to avoid COW if possible. */ | |
232 | + ret = bdrv_get_info(target, &bdi); | |
233 | + if (ret == -ENOTSUP && !target->backing) { | |
234 | + /* Cluster size is not defined */ | |
235 | + error_report("WARNING: The target block device doesn't provide " | |
236 | + "information about the block size and it doesn't have a " | |
237 | + "backing file. The default block size of %u bytes is " | |
238 | + "used. If the actual block size of the target exceeds " | |
239 | + "this default, the backup may be unusable", | |
240 | + BACKUP_CLUSTER_SIZE_DEFAULT); | |
241 | + job->cluster_size = BACKUP_CLUSTER_SIZE_DEFAULT; | |
242 | + } else if (ret < 0 && !target->backing) { | |
243 | + error_setg_errno(errp, -ret, | |
244 | + "Couldn't determine the cluster size of the target image, " | |
245 | + "which has no backing file"); | |
246 | + error_append_hint(errp, | |
247 | + "Aborting, since this may create an unusable destination image\n"); | |
248 | + goto error; | |
249 | + } else if (ret < 0 && target->backing) { | |
250 | + /* Not fatal; just trudge on ahead. */ | |
251 | + job->cluster_size = BACKUP_CLUSTER_SIZE_DEFAULT; | |
252 | + } else { | |
253 | + job->cluster_size = MAX(BACKUP_CLUSTER_SIZE_DEFAULT, bdi.cluster_size); | |
254 | + } | |
255 | } else { | |
256 | - job->cluster_size = MAX(BACKUP_CLUSTER_SIZE_DEFAULT, bdi.cluster_size); | |
257 | + ret = bdrv_get_info(bs, &bdi); | |
258 | + if (ret < 0) { | |
259 | + job->cluster_size = BACKUP_CLUSTER_SIZE_DEFAULT; | |
260 | + } else { | |
261 | + /* round down to nearest BACKUP_CLUSTER_SIZE_DEFAULT */ | |
262 | + job->cluster_size = (bdi.cluster_size / BACKUP_CLUSTER_SIZE_DEFAULT) * BACKUP_CLUSTER_SIZE_DEFAULT; | |
263 | + if (job->cluster_size == 0) { | |
264 | + /* but we can't go below it */ | |
265 | + job->cluster_size = BACKUP_CLUSTER_SIZE_DEFAULT; | |
266 | + } | |
267 | + } | |
268 | } | |
269 | ||
270 | - /* Required permissions are already taken with target's blk_new() */ | |
271 | - block_job_add_bdrv(&job->common, "target", target, 0, BLK_PERM_ALL, | |
272 | - &error_abort); | |
273 | + if (target) { | |
274 | + /* Required permissions are already taken with target's blk_new() */ | |
275 | + block_job_add_bdrv(&job->common, "target", target, 0, BLK_PERM_ALL, | |
276 | + &error_abort); | |
277 | + } else { | |
278 | + job->common.pause_count = pause_count; | |
279 | + } | |
280 | job->common.len = len; | |
281 | - job->common.pause_count = pause_count; | |
282 | block_job_txn_add_job(txn, &job->common); | |
283 | ||
284 | return &job->common; | |
285 | diff --git a/block/replication.c b/block/replication.c | |
286 | index 1c41d9e6bf..60c6524417 100644 | |
287 | --- a/block/replication.c | |
288 | +++ b/block/replication.c | |
289 | @@ -531,6 +531,7 @@ static void replication_start(ReplicationState *rs, ReplicationMode mode, | |
290 | 0, MIRROR_SYNC_MODE_NONE, NULL, false, | |
291 | BLOCKDEV_ON_ERROR_REPORT, | |
292 | BLOCKDEV_ON_ERROR_REPORT, BLOCK_JOB_INTERNAL, | |
293 | + NULL, | |
294 | backup_job_completed, bs, 0, NULL, &local_err); | |
295 | if (local_err) { | |
296 | error_propagate(errp, local_err); | |
297 | diff --git a/blockdev.c b/blockdev.c | |
23102ed6 | 298 | index 534c00f5da..19a82e8774 100644 |
67af0fa4 WB |
299 | --- a/blockdev.c |
300 | +++ b/blockdev.c | |
301 | @@ -31,7 +31,6 @@ | |
302 | */ | |
303 | ||
304 | #include "qemu/osdep.h" | |
305 | -#include "qemu/uuid.h" | |
306 | #include "sysemu/block-backend.h" | |
307 | #include "sysemu/blockdev.h" | |
308 | #include "hw/block/block.h" | |
309 | @@ -55,6 +54,7 @@ | |
310 | #include "qemu/cutils.h" | |
311 | #include "qemu/help_option.h" | |
312 | #include "qemu/throttle-options.h" | |
313 | +#include "vma.h" | |
314 | ||
315 | static QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states = | |
316 | QTAILQ_HEAD_INITIALIZER(monitor_bdrv_states); | |
ddbcf45e | 317 | @@ -2934,20 +2934,44 @@ out: |
67af0fa4 WB |
318 | aio_context_release(aio_context); |
319 | } | |
320 | ||
321 | +void block_job_event_cancelled(BlockJob *job); | |
322 | +void block_job_event_completed(BlockJob *job, const char *msg); | |
323 | +static void block_job_cb(void *opaque, int ret) | |
324 | +{ | |
325 | + /* Note that this function may be executed from another AioContext besides | |
326 | + * the QEMU main loop. If you need to access anything that assumes the | |
327 | + * QEMU global mutex, use a BH or introduce a mutex. | |
328 | + */ | |
329 | + | |
330 | + BlockDriverState *bs = opaque; | |
331 | + const char *msg = NULL; | |
332 | + | |
333 | + assert(bs->job); | |
334 | + | |
335 | + if (ret < 0) { | |
336 | + msg = strerror(-ret); | |
337 | + } | |
338 | + | |
339 | + if (block_job_is_cancelled(bs->job)) { | |
340 | + block_job_event_cancelled(bs->job); | |
341 | + } else { | |
342 | + block_job_event_completed(bs->job, msg); | |
343 | + } | |
344 | +} | |
345 | + | |
346 | /* PVE backup related function */ | |
347 | ||
348 | static struct PVEBackupState { | |
349 | Error *error; | |
350 | bool cancel; | |
351 | - QemuUUID uuid; | |
352 | + uuid_t uuid; | |
353 | char uuid_str[37]; | |
354 | int64_t speed; | |
355 | time_t start_time; | |
356 | time_t end_time; | |
357 | char *backup_file; | |
358 | - Object *vmaobj; | |
359 | + VmaWriter *vmaw; | |
360 | GList *di_list; | |
361 | - size_t next_job; | |
362 | size_t total; | |
363 | size_t transferred; | |
364 | size_t zero_bytes; | |
ddbcf45e | 365 | @@ -2957,6 +2981,7 @@ typedef struct PVEBackupDevInfo { |
67af0fa4 WB |
366 | BlockDriverState *bs; |
367 | size_t size; | |
368 | uint8_t dev_id; | |
369 | + //bool started; | |
370 | bool completed; | |
371 | char targetfile[PATH_MAX]; | |
372 | BlockDriverState *target; | |
ddbcf45e | 373 | @@ -2964,13 +2989,79 @@ typedef struct PVEBackupDevInfo { |
67af0fa4 WB |
374 | |
375 | static void pvebackup_run_next_job(void); | |
376 | ||
377 | +static int pvebackup_dump_cb(void *opaque, BlockBackend *target, | |
378 | + int64_t sector_num, int n_sectors, | |
379 | + unsigned char *buf) | |
380 | +{ | |
381 | + PVEBackupDevInfo *di = opaque; | |
382 | + | |
383 | + int size = n_sectors * BDRV_SECTOR_SIZE; | |
384 | + if (backup_state.cancel) { | |
385 | + return size; // return success | |
386 | + } | |
387 | + | |
388 | + if (sector_num & 0x7f) { | |
389 | + if (!backup_state.error) { | |
390 | + error_setg(&backup_state.error, | |
391 | + "got unaligned write inside backup dump " | |
392 | + "callback (sector %ld)", sector_num); | |
393 | + } | |
394 | + return -1; // not aligned to cluster size | |
395 | + } | |
396 | + | |
397 | + int64_t cluster_num = sector_num >> 7; | |
398 | + | |
399 | + int ret = -1; | |
400 | + | |
401 | + if (backup_state.vmaw) { | |
402 | + size_t zero_bytes = 0; | |
2ab9b48e WB |
403 | + int64_t remaining = n_sectors * BDRV_SECTOR_SIZE; |
404 | + while (remaining > 0) { | |
67af0fa4 WB |
405 | + ret = vma_writer_write(backup_state.vmaw, di->dev_id, cluster_num, |
406 | + buf, &zero_bytes); | |
67af0fa4 WB |
407 | + ++cluster_num; |
408 | + if (buf) { | |
409 | + buf += VMA_CLUSTER_SIZE; | |
410 | + } | |
411 | + if (ret < 0) { | |
412 | + if (!backup_state.error) { | |
413 | + vma_writer_error_propagate(backup_state.vmaw, &backup_state.error); | |
414 | + } | |
415 | + if (di->bs && di->bs->job) { | |
416 | + block_job_cancel(di->bs->job); | |
417 | + } | |
2ab9b48e | 418 | + break; |
67af0fa4 WB |
419 | + } else { |
420 | + backup_state.zero_bytes += zero_bytes; | |
2ab9b48e WB |
421 | + if (remaining >= VMA_CLUSTER_SIZE) { |
422 | + backup_state.transferred += VMA_CLUSTER_SIZE; | |
423 | + } else { | |
424 | + backup_state.transferred += remaining; | |
425 | + } | |
426 | + remaining -= VMA_CLUSTER_SIZE; | |
67af0fa4 WB |
427 | + } |
428 | + } | |
429 | + } else { | |
430 | + if (!buf) { | |
431 | + backup_state.zero_bytes += size; | |
432 | + } | |
433 | + backup_state.transferred += size; | |
434 | + } | |
435 | + | |
436 | + // Note: always return success, because we want that writes succeed anyways. | |
437 | + | |
438 | + return size; | |
439 | +} | |
440 | + | |
441 | static void pvebackup_cleanup(void) | |
442 | { | |
443 | backup_state.end_time = time(NULL); | |
444 | ||
445 | - if (backup_state.vmaobj) { | |
446 | - object_unparent(backup_state.vmaobj); | |
447 | - backup_state.vmaobj = NULL; | |
448 | + if (backup_state.vmaw) { | |
449 | + Error *local_err = NULL; | |
450 | + vma_writer_close(backup_state.vmaw, &local_err); | |
451 | + error_propagate(&backup_state.error, local_err); | |
452 | + backup_state.vmaw = NULL; | |
453 | } | |
454 | ||
455 | if (backup_state.di_list) { | |
ddbcf45e | 456 | @@ -2985,6 +3076,13 @@ static void pvebackup_cleanup(void) |
67af0fa4 WB |
457 | } |
458 | } | |
459 | ||
460 | +static void coroutine_fn backup_close_vma_stream(void *opaque) | |
461 | +{ | |
462 | + PVEBackupDevInfo *di = opaque; | |
463 | + | |
464 | + vma_writer_close_stream(backup_state.vmaw, di->dev_id); | |
465 | +} | |
466 | + | |
467 | static void pvebackup_complete_cb(void *opaque, int ret) | |
468 | { | |
469 | PVEBackupDevInfo *di = opaque; | |
ddbcf45e | 470 | @@ -2996,14 +3094,18 @@ static void pvebackup_complete_cb(void *opaque, int ret) |
67af0fa4 WB |
471 | ret, strerror(-ret)); |
472 | } | |
473 | ||
474 | + BlockDriverState *bs = di->bs; | |
475 | + | |
476 | di->bs = NULL; | |
477 | di->target = NULL; | |
478 | ||
479 | - if (backup_state.vmaobj) { | |
480 | - object_unparent(backup_state.vmaobj); | |
481 | - backup_state.vmaobj = NULL; | |
482 | + if (backup_state.vmaw) { | |
483 | + Coroutine *co = qemu_coroutine_create(backup_close_vma_stream, di); | |
484 | + qemu_coroutine_enter(co); | |
485 | } | |
486 | ||
487 | + block_job_cb(bs, ret); | |
488 | + | |
489 | if (!backup_state.cancel) { | |
490 | pvebackup_run_next_job(); | |
491 | } | |
ddbcf45e | 492 | @@ -3017,14 +3119,9 @@ static void pvebackup_cancel(void *opaque) |
67af0fa4 WB |
493 | error_setg(&backup_state.error, "backup cancelled"); |
494 | } | |
495 | ||
496 | - if (backup_state.vmaobj) { | |
497 | - Error *err; | |
498 | + if (backup_state.vmaw) { | |
499 | /* make sure vma writer does not block anymore */ | |
500 | - if (!object_set_props(backup_state.vmaobj, &err, "blocked", "yes", NULL)) { | |
501 | - if (err) { | |
502 | - error_report_err(err); | |
503 | - } | |
504 | - } | |
505 | + vma_writer_set_error(backup_state.vmaw, "backup cancelled"); | |
506 | } | |
507 | ||
508 | GList *l = backup_state.di_list; | |
ddbcf45e | 509 | @@ -3049,19 +3146,15 @@ void qmp_backup_cancel(Error **errp) |
67af0fa4 WB |
510 | Coroutine *co = qemu_coroutine_create(pvebackup_cancel, NULL); |
511 | qemu_coroutine_enter(co); | |
512 | ||
513 | - while (backup_state.vmaobj) { | |
514 | - /* FIXME: Find something better for this */ | |
515 | + while (backup_state.vmaw) { | |
516 | + /* vma writer use main aio context */ | |
517 | aio_poll(qemu_get_aio_context(), true); | |
518 | } | |
519 | } | |
520 | ||
521 | -void vma_object_add_config_file(Object *obj, const char *name, | |
522 | - const char *contents, size_t len, | |
523 | - Error **errp); | |
524 | static int config_to_vma(const char *file, BackupFormat format, | |
525 | - Object *vmaobj, | |
526 | - const char *backup_dir, | |
527 | - Error **errp) | |
528 | + const char *backup_dir, VmaWriter *vmaw, | |
529 | + Error **errp) | |
530 | { | |
531 | char *cdata = NULL; | |
532 | gsize clen = 0; | |
ddbcf45e | 533 | @@ -3074,12 +3167,17 @@ static int config_to_vma(const char *file, BackupFormat format, |
67af0fa4 WB |
534 | char *basename = g_path_get_basename(file); |
535 | ||
536 | if (format == BACKUP_FORMAT_VMA) { | |
537 | - vma_object_add_config_file(vmaobj, basename, cdata, clen, errp); | |
538 | + if (vma_writer_add_config(vmaw, basename, cdata, clen) != 0) { | |
539 | + error_setg(errp, "unable to add %s config data to vma archive", file); | |
540 | + g_free(cdata); | |
541 | + g_free(basename); | |
542 | + return 1; | |
543 | + } | |
544 | } else if (format == BACKUP_FORMAT_DIR) { | |
545 | char config_path[PATH_MAX]; | |
546 | snprintf(config_path, PATH_MAX, "%s/%s", backup_dir, basename); | |
547 | if (!g_file_set_contents(config_path, cdata, clen, &err)) { | |
548 | - error_setg(errp, "unable to write config file '%s'", config_path); | |
549 | + error_setg(errp, "unable to write config file '%s'", config_path); | |
550 | g_free(cdata); | |
551 | g_free(basename); | |
552 | return 1; | |
23102ed6 | 553 | @@ -3089,34 +3187,37 @@ static int config_to_vma(const char *file, BackupFormat format, |
67af0fa4 WB |
554 | g_free(basename); |
555 | g_free(cdata); | |
556 | ||
557 | - return 0; | |
558 | + return 0; | |
559 | } | |
560 | ||
561 | +bool block_job_should_pause(BlockJob *job); | |
562 | static void pvebackup_run_next_job(void) | |
563 | { | |
564 | - bool cancel = backup_state.error || backup_state.cancel; | |
67af0fa4 WB |
565 | - GList *next = g_list_nth(backup_state.di_list, backup_state.next_job); |
566 | - while (next) { | |
567 | - PVEBackupDevInfo *di = (PVEBackupDevInfo *)next->data; | |
568 | - backup_state.next_job++; | |
569 | + GList *l = backup_state.di_list; | |
570 | + while (l) { | |
571 | + PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data; | |
572 | + l = g_list_next(l); | |
573 | if (!di->completed && di->bs && di->bs->job) { | |
574 | BlockJob *job = di->bs->job; | |
575 | - if (cancel) { | |
576 | - block_job_cancel(job); | |
577 | - } else { | |
578 | - block_job_resume(job); | |
579 | + if (block_job_should_pause(job)) { | |
580 | + bool cancel = backup_state.error || backup_state.cancel; | |
581 | + if (cancel) { | |
582 | + block_job_cancel(job); | |
583 | + } else { | |
584 | + block_job_resume(job); | |
585 | + } | |
586 | } | |
587 | return; | |
588 | } | |
589 | - next = g_list_next(next); | |
590 | } | |
591 | + | |
592 | pvebackup_cleanup(); | |
593 | } | |
594 | ||
595 | UuidInfo *qmp_backup(const char *backup_file, bool has_format, | |
596 | BackupFormat format, | |
597 | bool has_config_file, const char *config_file, | |
598 | - bool has_firewall_file, const char *firewall_file, | |
599 | + bool has_firewall_file, const char *firewall_file, | |
600 | bool has_devlist, const char *devlist, | |
601 | bool has_speed, int64_t speed, Error **errp) | |
602 | { | |
23102ed6 | 603 | @@ -3124,14 +3225,15 @@ UuidInfo *qmp_backup(const char *backup_file, bool has_format, |
67af0fa4 WB |
604 | BlockDriverState *bs = NULL; |
605 | const char *backup_dir = NULL; | |
606 | Error *local_err = NULL; | |
607 | - QemuUUID uuid; | |
608 | + uuid_t uuid; | |
609 | + VmaWriter *vmaw = NULL; | |
610 | gchar **devs = NULL; | |
611 | GList *di_list = NULL; | |
612 | GList *l; | |
613 | UuidInfo *uuid_info; | |
614 | BlockJob *job; | |
615 | ||
616 | - if (backup_state.di_list || backup_state.vmaobj) { | |
617 | + if (backup_state.di_list) { | |
618 | error_set(errp, ERROR_CLASS_GENERIC_ERROR, | |
619 | "previous backup not finished"); | |
620 | return NULL; | |
23102ed6 | 621 | @@ -3206,40 +3308,28 @@ UuidInfo *qmp_backup(const char *backup_file, bool has_format, |
67af0fa4 WB |
622 | total += size; |
623 | } | |
624 | ||
625 | - qemu_uuid_generate(&uuid); | |
626 | + uuid_generate(uuid); | |
627 | ||
628 | if (format == BACKUP_FORMAT_VMA) { | |
629 | - char uuidstr[UUID_FMT_LEN+1]; | |
630 | - qemu_uuid_unparse(&uuid, uuidstr); | |
631 | - uuidstr[UUID_FMT_LEN] = 0; | |
632 | - backup_state.vmaobj = | |
633 | - object_new_with_props("vma", object_get_objects_root(), | |
634 | - "vma-backup-obj", &local_err, | |
635 | - "filename", backup_file, | |
636 | - "uuid", uuidstr, | |
637 | - NULL); | |
638 | - if (!backup_state.vmaobj) { | |
639 | + vmaw = vma_writer_create(backup_file, uuid, &local_err); | |
640 | + if (!vmaw) { | |
641 | if (local_err) { | |
642 | error_propagate(errp, local_err); | |
643 | } | |
644 | goto err; | |
645 | } | |
646 | ||
647 | + /* register all devices for vma writer */ | |
648 | l = di_list; | |
649 | while (l) { | |
650 | - QDict *options = qdict_new(); | |
651 | - | |
652 | PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data; | |
653 | l = g_list_next(l); | |
654 | ||
655 | const char *devname = bdrv_get_device_name(di->bs); | |
656 | - snprintf(di->targetfile, PATH_MAX, "vma-backup-obj/%s.raw", devname); | |
657 | - | |
658 | - qdict_put(options, "driver", qstring_from_str("vma-drive")); | |
659 | - qdict_put(options, "size", qint_from_int(di->size)); | |
660 | - di->target = bdrv_open(di->targetfile, NULL, options, BDRV_O_RDWR, &local_err); | |
661 | - if (!di->target) { | |
662 | - error_propagate(errp, local_err); | |
663 | + di->dev_id = vma_writer_register_stream(vmaw, devname, di->size); | |
664 | + if (di->dev_id <= 0) { | |
665 | + error_set(errp, ERROR_CLASS_GENERIC_ERROR, | |
666 | + "register_stream failed"); | |
667 | goto err; | |
668 | } | |
669 | } | |
23102ed6 | 670 | @@ -3280,15 +3370,15 @@ UuidInfo *qmp_backup(const char *backup_file, bool has_format, |
67af0fa4 WB |
671 | |
672 | /* add configuration file to archive */ | |
673 | if (has_config_file) { | |
674 | - if(config_to_vma(config_file, format, backup_state.vmaobj, backup_dir, errp) != 0) { | |
675 | - goto err; | |
676 | + if(config_to_vma(config_file, format, backup_dir, vmaw, errp) != 0) { | |
677 | + goto err; | |
678 | } | |
679 | } | |
680 | ||
681 | /* add firewall file to archive */ | |
682 | if (has_firewall_file) { | |
683 | - if(config_to_vma(firewall_file, format, backup_state.vmaobj, backup_dir, errp) != 0) { | |
684 | - goto err; | |
685 | + if(config_to_vma(firewall_file, format, backup_dir, vmaw, errp) != 0) { | |
686 | + goto err; | |
687 | } | |
688 | } | |
689 | /* initialize global backup_state now */ | |
23102ed6 | 690 | @@ -3310,11 +3400,12 @@ UuidInfo *qmp_backup(const char *backup_file, bool has_format, |
67af0fa4 WB |
691 | } |
692 | backup_state.backup_file = g_strdup(backup_file); | |
693 | ||
694 | - memcpy(&backup_state.uuid, &uuid, sizeof(uuid)); | |
695 | - qemu_uuid_unparse(&uuid, backup_state.uuid_str); | |
696 | + backup_state.vmaw = vmaw; | |
697 | + | |
698 | + uuid_copy(backup_state.uuid, uuid); | |
699 | + uuid_unparse_lower(uuid, backup_state.uuid_str); | |
700 | ||
701 | backup_state.di_list = di_list; | |
702 | - backup_state.next_job = 0; | |
703 | ||
704 | backup_state.total = total; | |
705 | backup_state.transferred = 0; | |
23102ed6 | 706 | @@ -3325,21 +3416,16 @@ UuidInfo *qmp_backup(const char *backup_file, bool has_format, |
67af0fa4 WB |
707 | while (l) { |
708 | PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data; | |
709 | l = g_list_next(l); | |
710 | - | |
711 | job = backup_job_create(NULL, di->bs, di->target, speed, MIRROR_SYNC_MODE_FULL, NULL, | |
712 | false, BLOCKDEV_ON_ERROR_REPORT, BLOCKDEV_ON_ERROR_REPORT, | |
713 | BLOCK_JOB_DEFAULT, | |
714 | - pvebackup_complete_cb, di, 2, NULL, &local_err); | |
715 | - if (di->target) { | |
716 | - bdrv_unref(di->target); | |
717 | - di->target = NULL; | |
718 | - } | |
719 | + pvebackup_dump_cb, pvebackup_complete_cb, di, | |
720 | + 2, NULL, &local_err); | |
721 | if (!job || local_err != NULL) { | |
722 | error_setg(&backup_state.error, "backup_job_create failed"); | |
723 | pvebackup_cancel(NULL); | |
724 | - } else { | |
725 | - block_job_start(job); | |
726 | } | |
727 | + block_job_start(job); | |
728 | } | |
729 | ||
730 | if (!backup_state.error) { | |
23102ed6 | 731 | @@ -3373,9 +3459,10 @@ err: |
67af0fa4 WB |
732 | g_strfreev(devs); |
733 | } | |
734 | ||
735 | - if (backup_state.vmaobj) { | |
736 | - object_unparent(backup_state.vmaobj); | |
737 | - backup_state.vmaobj = NULL; | |
738 | + if (vmaw) { | |
739 | + Error *err = NULL; | |
740 | + vma_writer_close(vmaw, &err); | |
741 | + unlink(backup_file); | |
742 | } | |
743 | ||
744 | if (backup_dir) { | |
23102ed6 | 745 | @@ -3760,7 +3847,7 @@ static BlockJob *do_drive_backup(DriveBackup *backup, BlockJobTxn *txn, |
67af0fa4 WB |
746 | job = backup_job_create(backup->job_id, bs, target_bs, backup->speed, |
747 | backup->sync, bmap, backup->compress, | |
748 | backup->on_source_error, backup->on_target_error, | |
749 | - BLOCK_JOB_DEFAULT, NULL, NULL, 0, txn, &local_err); | |
750 | + BLOCK_JOB_DEFAULT, NULL, NULL, NULL, 0, txn, &local_err); | |
751 | bdrv_unref(target_bs); | |
752 | if (local_err != NULL) { | |
753 | error_propagate(errp, local_err); | |
23102ed6 | 754 | @@ -3839,7 +3926,7 @@ BlockJob *do_blockdev_backup(BlockdevBackup *backup, BlockJobTxn *txn, |
67af0fa4 WB |
755 | job = backup_job_create(backup->job_id, bs, target_bs, backup->speed, |
756 | backup->sync, NULL, backup->compress, | |
757 | backup->on_source_error, backup->on_target_error, | |
758 | - BLOCK_JOB_DEFAULT, NULL, NULL, 0, txn, &local_err); | |
759 | + BLOCK_JOB_DEFAULT, NULL, NULL, NULL, 0, txn, &local_err); | |
760 | if (local_err != NULL) { | |
761 | error_propagate(errp, local_err); | |
762 | } | |
763 | diff --git a/blockjob.c b/blockjob.c | |
764 | index 764d41863e..cb3741f6dd 100644 | |
765 | --- a/blockjob.c | |
766 | +++ b/blockjob.c | |
767 | @@ -37,8 +37,8 @@ | |
768 | #include "qemu/timer.h" | |
769 | #include "qapi-event.h" | |
770 | ||
771 | -static void block_job_event_cancelled(BlockJob *job); | |
772 | -static void block_job_event_completed(BlockJob *job, const char *msg); | |
773 | +void block_job_event_cancelled(BlockJob *job); | |
774 | +void block_job_event_completed(BlockJob *job, const char *msg); | |
775 | ||
776 | /* Transactional group of block jobs */ | |
777 | struct BlockJobTxn { | |
778 | @@ -473,7 +473,8 @@ void block_job_user_pause(BlockJob *job) | |
779 | block_job_pause(job); | |
780 | } | |
781 | ||
782 | -static bool block_job_should_pause(BlockJob *job) | |
783 | +bool block_job_should_pause(BlockJob *job); | |
784 | +bool block_job_should_pause(BlockJob *job) | |
785 | { | |
786 | return job->pause_count > 0; | |
787 | } | |
788 | @@ -687,7 +688,7 @@ static void block_job_iostatus_set_err(BlockJob *job, int error) | |
789 | } | |
790 | } | |
791 | ||
792 | -static void block_job_event_cancelled(BlockJob *job) | |
793 | +void block_job_event_cancelled(BlockJob *job) | |
794 | { | |
795 | if (block_job_is_internal(job)) { | |
796 | return; | |
797 | @@ -701,7 +702,7 @@ static void block_job_event_cancelled(BlockJob *job) | |
798 | &error_abort); | |
799 | } | |
800 | ||
801 | -static void block_job_event_completed(BlockJob *job, const char *msg) | |
802 | +void block_job_event_completed(BlockJob *job, const char *msg) | |
803 | { | |
804 | if (block_job_is_internal(job)) { | |
805 | return; | |
806 | diff --git a/include/block/block_int.h b/include/block/block_int.h | |
ddbcf45e | 807 | index 19b84b027f..fc1c53a059 100644 |
67af0fa4 WB |
808 | --- a/include/block/block_int.h |
809 | +++ b/include/block/block_int.h | |
810 | @@ -59,6 +59,9 @@ | |
811 | ||
812 | #define BLOCK_PROBE_BUF_SIZE 512 | |
813 | ||
814 | +typedef int BackupDumpFunc(void *opaque, BlockBackend *be, | |
815 | + int64_t sector_num, int n_sectors, unsigned char *buf); | |
816 | + | |
817 | enum BdrvTrackedRequestType { | |
818 | BDRV_TRACKED_READ, | |
819 | BDRV_TRACKED_WRITE, | |
ddbcf45e | 820 | @@ -878,6 +881,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs, |
67af0fa4 WB |
821 | BlockdevOnError on_source_error, |
822 | BlockdevOnError on_target_error, | |
823 | int creation_flags, | |
824 | + BackupDumpFunc *dump_cb, | |
825 | BlockCompletionFunc *cb, void *opaque, | |
826 | int pause_count, | |
827 | BlockJobTxn *txn, Error **errp); | |
95259824 WB |
828 | diff --git a/vma-reader.c b/vma-reader.c |
829 | new file mode 100644 | |
67af0fa4 | 830 | index 0000000000..2000889bd3 |
95259824 WB |
831 | --- /dev/null |
832 | +++ b/vma-reader.c | |
67af0fa4 | 833 | @@ -0,0 +1,857 @@ |
95259824 WB |
834 | +/* |
835 | + * VMA: Virtual Machine Archive | |
836 | + * | |
837 | + * Copyright (C) 2012 Proxmox Server Solutions | |
838 | + * | |
839 | + * Authors: | |
840 | + * Dietmar Maurer (dietmar@proxmox.com) | |
841 | + * | |
842 | + * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
843 | + * See the COPYING file in the top-level directory. | |
844 | + * | |
845 | + */ | |
846 | + | |
847 | +#include "qemu/osdep.h" | |
848 | +#include <glib.h> | |
849 | +#include <uuid/uuid.h> | |
850 | + | |
851 | +#include "qemu-common.h" | |
852 | +#include "qemu/timer.h" | |
853 | +#include "qemu/ratelimit.h" | |
854 | +#include "vma.h" | |
855 | +#include "block/block.h" | |
856 | +#include "sysemu/block-backend.h" | |
857 | + | |
858 | +static unsigned char zero_vma_block[VMA_BLOCK_SIZE]; | |
859 | + | |
860 | +typedef struct VmaRestoreState { | |
67af0fa4 | 861 | + BlockBackend *target; |
95259824 WB |
862 | + bool write_zeroes; |
863 | + unsigned long *bitmap; | |
864 | + int bitmap_size; | |
865 | +} VmaRestoreState; | |
866 | + | |
867 | +struct VmaReader { | |
868 | + int fd; | |
869 | + GChecksum *md5csum; | |
870 | + GHashTable *blob_hash; | |
871 | + unsigned char *head_data; | |
872 | + VmaDeviceInfo devinfo[256]; | |
873 | + VmaRestoreState rstate[256]; | |
874 | + GList *cdata_list; | |
875 | + guint8 vmstate_stream; | |
876 | + uint32_t vmstate_clusters; | |
877 | + /* to show restore percentage if run with -v */ | |
878 | + time_t start_time; | |
879 | + int64_t cluster_count; | |
880 | + int64_t clusters_read; | |
67af0fa4 WB |
881 | + int64_t zero_cluster_data; |
882 | + int64_t partial_zero_cluster_data; | |
95259824 WB |
883 | + int clusters_read_per; |
884 | +}; | |
885 | + | |
886 | +static guint | |
887 | +g_int32_hash(gconstpointer v) | |
888 | +{ | |
889 | + return *(const uint32_t *)v; | |
890 | +} | |
891 | + | |
892 | +static gboolean | |
893 | +g_int32_equal(gconstpointer v1, gconstpointer v2) | |
894 | +{ | |
895 | + return *((const uint32_t *)v1) == *((const uint32_t *)v2); | |
896 | +} | |
897 | + | |
898 | +static int vma_reader_get_bitmap(VmaRestoreState *rstate, int64_t cluster_num) | |
899 | +{ | |
900 | + assert(rstate); | |
901 | + assert(rstate->bitmap); | |
902 | + | |
903 | + unsigned long val, idx, bit; | |
904 | + | |
905 | + idx = cluster_num / BITS_PER_LONG; | |
906 | + | |
907 | + assert(rstate->bitmap_size > idx); | |
908 | + | |
909 | + bit = cluster_num % BITS_PER_LONG; | |
910 | + val = rstate->bitmap[idx]; | |
911 | + | |
912 | + return !!(val & (1UL << bit)); | |
913 | +} | |
914 | + | |
915 | +static void vma_reader_set_bitmap(VmaRestoreState *rstate, int64_t cluster_num, | |
916 | + int dirty) | |
917 | +{ | |
918 | + assert(rstate); | |
919 | + assert(rstate->bitmap); | |
920 | + | |
921 | + unsigned long val, idx, bit; | |
922 | + | |
923 | + idx = cluster_num / BITS_PER_LONG; | |
924 | + | |
925 | + assert(rstate->bitmap_size > idx); | |
926 | + | |
927 | + bit = cluster_num % BITS_PER_LONG; | |
928 | + val = rstate->bitmap[idx]; | |
929 | + if (dirty) { | |
930 | + if (!(val & (1UL << bit))) { | |
931 | + val |= 1UL << bit; | |
932 | + } | |
933 | + } else { | |
934 | + if (val & (1UL << bit)) { | |
935 | + val &= ~(1UL << bit); | |
936 | + } | |
937 | + } | |
938 | + rstate->bitmap[idx] = val; | |
939 | +} | |
940 | + | |
941 | +typedef struct VmaBlob { | |
942 | + uint32_t start; | |
943 | + uint32_t len; | |
944 | + void *data; | |
945 | +} VmaBlob; | |
946 | + | |
947 | +static const VmaBlob *get_header_blob(VmaReader *vmar, uint32_t pos) | |
948 | +{ | |
949 | + assert(vmar); | |
950 | + assert(vmar->blob_hash); | |
951 | + | |
952 | + return g_hash_table_lookup(vmar->blob_hash, &pos); | |
953 | +} | |
954 | + | |
955 | +static const char *get_header_str(VmaReader *vmar, uint32_t pos) | |
956 | +{ | |
957 | + const VmaBlob *blob = get_header_blob(vmar, pos); | |
958 | + if (!blob) { | |
959 | + return NULL; | |
960 | + } | |
961 | + const char *res = (char *)blob->data; | |
962 | + if (res[blob->len-1] != '\0') { | |
963 | + return NULL; | |
964 | + } | |
965 | + return res; | |
966 | +} | |
967 | + | |
968 | +static ssize_t | |
969 | +safe_read(int fd, unsigned char *buf, size_t count) | |
970 | +{ | |
971 | + ssize_t n; | |
972 | + | |
973 | + do { | |
974 | + n = read(fd, buf, count); | |
975 | + } while (n < 0 && errno == EINTR); | |
976 | + | |
977 | + return n; | |
978 | +} | |
979 | + | |
980 | +static ssize_t | |
981 | +full_read(int fd, unsigned char *buf, size_t len) | |
982 | +{ | |
983 | + ssize_t n; | |
984 | + size_t total; | |
985 | + | |
986 | + total = 0; | |
987 | + | |
988 | + while (len > 0) { | |
989 | + n = safe_read(fd, buf, len); | |
990 | + | |
991 | + if (n == 0) { | |
992 | + return total; | |
993 | + } | |
994 | + | |
995 | + if (n <= 0) { | |
996 | + break; | |
997 | + } | |
998 | + | |
999 | + buf += n; | |
1000 | + total += n; | |
1001 | + len -= n; | |
1002 | + } | |
1003 | + | |
1004 | + if (len) { | |
1005 | + return -1; | |
1006 | + } | |
1007 | + | |
1008 | + return total; | |
1009 | +} | |
1010 | + | |
1011 | +void vma_reader_destroy(VmaReader *vmar) | |
1012 | +{ | |
1013 | + assert(vmar); | |
1014 | + | |
1015 | + if (vmar->fd >= 0) { | |
1016 | + close(vmar->fd); | |
1017 | + } | |
1018 | + | |
1019 | + if (vmar->cdata_list) { | |
1020 | + g_list_free(vmar->cdata_list); | |
1021 | + } | |
1022 | + | |
1023 | + int i; | |
1024 | + for (i = 1; i < 256; i++) { | |
1025 | + if (vmar->rstate[i].bitmap) { | |
1026 | + g_free(vmar->rstate[i].bitmap); | |
1027 | + } | |
1028 | + } | |
1029 | + | |
1030 | + if (vmar->md5csum) { | |
1031 | + g_checksum_free(vmar->md5csum); | |
1032 | + } | |
1033 | + | |
1034 | + if (vmar->blob_hash) { | |
1035 | + g_hash_table_destroy(vmar->blob_hash); | |
1036 | + } | |
1037 | + | |
1038 | + if (vmar->head_data) { | |
1039 | + g_free(vmar->head_data); | |
1040 | + } | |
1041 | + | |
1042 | + g_free(vmar); | |
1043 | + | |
1044 | +}; | |
1045 | + | |
1046 | +static int vma_reader_read_head(VmaReader *vmar, Error **errp) | |
1047 | +{ | |
1048 | + assert(vmar); | |
1049 | + assert(errp); | |
1050 | + assert(*errp == NULL); | |
1051 | + | |
1052 | + unsigned char md5sum[16]; | |
1053 | + int i; | |
1054 | + int ret = 0; | |
1055 | + | |
1056 | + vmar->head_data = g_malloc(sizeof(VmaHeader)); | |
1057 | + | |
1058 | + if (full_read(vmar->fd, vmar->head_data, sizeof(VmaHeader)) != | |
1059 | + sizeof(VmaHeader)) { | |
1060 | + error_setg(errp, "can't read vma header - %s", | |
1061 | + errno ? g_strerror(errno) : "got EOF"); | |
1062 | + return -1; | |
1063 | + } | |
1064 | + | |
1065 | + VmaHeader *h = (VmaHeader *)vmar->head_data; | |
1066 | + | |
1067 | + if (h->magic != VMA_MAGIC) { | |
1068 | + error_setg(errp, "not a vma file - wrong magic number"); | |
1069 | + return -1; | |
1070 | + } | |
1071 | + | |
1072 | + uint32_t header_size = GUINT32_FROM_BE(h->header_size); | |
1073 | + int need = header_size - sizeof(VmaHeader); | |
1074 | + if (need <= 0) { | |
1075 | + error_setg(errp, "wrong vma header size %d", header_size); | |
1076 | + return -1; | |
1077 | + } | |
1078 | + | |
1079 | + vmar->head_data = g_realloc(vmar->head_data, header_size); | |
1080 | + h = (VmaHeader *)vmar->head_data; | |
1081 | + | |
1082 | + if (full_read(vmar->fd, vmar->head_data + sizeof(VmaHeader), need) != | |
1083 | + need) { | |
1084 | + error_setg(errp, "can't read vma header data - %s", | |
1085 | + errno ? g_strerror(errno) : "got EOF"); | |
1086 | + return -1; | |
1087 | + } | |
1088 | + | |
1089 | + memcpy(md5sum, h->md5sum, 16); | |
1090 | + memset(h->md5sum, 0, 16); | |
1091 | + | |
1092 | + g_checksum_reset(vmar->md5csum); | |
1093 | + g_checksum_update(vmar->md5csum, vmar->head_data, header_size); | |
1094 | + gsize csize = 16; | |
1095 | + g_checksum_get_digest(vmar->md5csum, (guint8 *)(h->md5sum), &csize); | |
1096 | + | |
1097 | + if (memcmp(md5sum, h->md5sum, 16) != 0) { | |
1098 | + error_setg(errp, "wrong vma header chechsum"); | |
1099 | + return -1; | |
1100 | + } | |
1101 | + | |
1102 | + /* we can modify header data after checksum verify */ | |
1103 | + h->header_size = header_size; | |
1104 | + | |
1105 | + h->version = GUINT32_FROM_BE(h->version); | |
1106 | + if (h->version != 1) { | |
1107 | + error_setg(errp, "wrong vma version %d", h->version); | |
1108 | + return -1; | |
1109 | + } | |
1110 | + | |
1111 | + h->ctime = GUINT64_FROM_BE(h->ctime); | |
1112 | + h->blob_buffer_offset = GUINT32_FROM_BE(h->blob_buffer_offset); | |
1113 | + h->blob_buffer_size = GUINT32_FROM_BE(h->blob_buffer_size); | |
1114 | + | |
1115 | + uint32_t bstart = h->blob_buffer_offset + 1; | |
1116 | + uint32_t bend = h->blob_buffer_offset + h->blob_buffer_size; | |
1117 | + | |
1118 | + if (bstart <= sizeof(VmaHeader)) { | |
1119 | + error_setg(errp, "wrong vma blob buffer offset %d", | |
1120 | + h->blob_buffer_offset); | |
1121 | + return -1; | |
1122 | + } | |
1123 | + | |
1124 | + if (bend > header_size) { | |
1125 | + error_setg(errp, "wrong vma blob buffer size %d/%d", | |
1126 | + h->blob_buffer_offset, h->blob_buffer_size); | |
1127 | + return -1; | |
1128 | + } | |
1129 | + | |
1130 | + while ((bstart + 2) <= bend) { | |
1131 | + uint32_t size = vmar->head_data[bstart] + | |
1132 | + (vmar->head_data[bstart+1] << 8); | |
1133 | + if ((bstart + size + 2) <= bend) { | |
1134 | + VmaBlob *blob = g_new0(VmaBlob, 1); | |
1135 | + blob->start = bstart - h->blob_buffer_offset; | |
1136 | + blob->len = size; | |
1137 | + blob->data = vmar->head_data + bstart + 2; | |
1138 | + g_hash_table_insert(vmar->blob_hash, &blob->start, blob); | |
1139 | + } | |
1140 | + bstart += size + 2; | |
1141 | + } | |
1142 | + | |
1143 | + | |
1144 | + int count = 0; | |
1145 | + for (i = 1; i < 256; i++) { | |
1146 | + VmaDeviceInfoHeader *dih = &h->dev_info[i]; | |
1147 | + uint32_t devname_ptr = GUINT32_FROM_BE(dih->devname_ptr); | |
1148 | + uint64_t size = GUINT64_FROM_BE(dih->size); | |
1149 | + const char *devname = get_header_str(vmar, devname_ptr); | |
1150 | + | |
1151 | + if (size && devname) { | |
1152 | + count++; | |
1153 | + vmar->devinfo[i].size = size; | |
1154 | + vmar->devinfo[i].devname = devname; | |
1155 | + | |
1156 | + if (strcmp(devname, "vmstate") == 0) { | |
1157 | + vmar->vmstate_stream = i; | |
1158 | + } | |
1159 | + } | |
1160 | + } | |
1161 | + | |
95259824 WB |
1162 | + for (i = 0; i < VMA_MAX_CONFIGS; i++) { |
1163 | + uint32_t name_ptr = GUINT32_FROM_BE(h->config_names[i]); | |
1164 | + uint32_t data_ptr = GUINT32_FROM_BE(h->config_data[i]); | |
1165 | + | |
1166 | + if (!(name_ptr && data_ptr)) { | |
1167 | + continue; | |
1168 | + } | |
1169 | + const char *name = get_header_str(vmar, name_ptr); | |
1170 | + const VmaBlob *blob = get_header_blob(vmar, data_ptr); | |
1171 | + | |
1172 | + if (!(name && blob)) { | |
1173 | + error_setg(errp, "vma contains invalid data pointers"); | |
1174 | + return -1; | |
1175 | + } | |
1176 | + | |
1177 | + VmaConfigData *cdata = g_new0(VmaConfigData, 1); | |
1178 | + cdata->name = name; | |
1179 | + cdata->data = blob->data; | |
1180 | + cdata->len = blob->len; | |
1181 | + | |
1182 | + vmar->cdata_list = g_list_append(vmar->cdata_list, cdata); | |
1183 | + } | |
1184 | + | |
1185 | + return ret; | |
1186 | +}; | |
1187 | + | |
1188 | +VmaReader *vma_reader_create(const char *filename, Error **errp) | |
1189 | +{ | |
1190 | + assert(filename); | |
1191 | + assert(errp); | |
1192 | + | |
1193 | + VmaReader *vmar = g_new0(VmaReader, 1); | |
1194 | + | |
1195 | + if (strcmp(filename, "-") == 0) { | |
1196 | + vmar->fd = dup(0); | |
1197 | + } else { | |
1198 | + vmar->fd = open(filename, O_RDONLY); | |
1199 | + } | |
1200 | + | |
1201 | + if (vmar->fd < 0) { | |
1202 | + error_setg(errp, "can't open file %s - %s\n", filename, | |
1203 | + g_strerror(errno)); | |
1204 | + goto err; | |
1205 | + } | |
1206 | + | |
1207 | + vmar->md5csum = g_checksum_new(G_CHECKSUM_MD5); | |
1208 | + if (!vmar->md5csum) { | |
1209 | + error_setg(errp, "can't allocate cmsum\n"); | |
1210 | + goto err; | |
1211 | + } | |
1212 | + | |
1213 | + vmar->blob_hash = g_hash_table_new_full(g_int32_hash, g_int32_equal, | |
1214 | + NULL, g_free); | |
1215 | + | |
1216 | + if (vma_reader_read_head(vmar, errp) < 0) { | |
1217 | + goto err; | |
1218 | + } | |
1219 | + | |
1220 | + return vmar; | |
1221 | + | |
1222 | +err: | |
1223 | + if (vmar) { | |
1224 | + vma_reader_destroy(vmar); | |
1225 | + } | |
1226 | + | |
1227 | + return NULL; | |
1228 | +} | |
1229 | + | |
1230 | +VmaHeader *vma_reader_get_header(VmaReader *vmar) | |
1231 | +{ | |
1232 | + assert(vmar); | |
1233 | + assert(vmar->head_data); | |
1234 | + | |
1235 | + return (VmaHeader *)(vmar->head_data); | |
1236 | +} | |
1237 | + | |
1238 | +GList *vma_reader_get_config_data(VmaReader *vmar) | |
1239 | +{ | |
1240 | + assert(vmar); | |
1241 | + assert(vmar->head_data); | |
1242 | + | |
1243 | + return vmar->cdata_list; | |
1244 | +} | |
1245 | + | |
1246 | +VmaDeviceInfo *vma_reader_get_device_info(VmaReader *vmar, guint8 dev_id) | |
1247 | +{ | |
1248 | + assert(vmar); | |
1249 | + assert(dev_id); | |
1250 | + | |
1251 | + if (vmar->devinfo[dev_id].size && vmar->devinfo[dev_id].devname) { | |
1252 | + return &vmar->devinfo[dev_id]; | |
1253 | + } | |
1254 | + | |
1255 | + return NULL; | |
1256 | +} | |
1257 | + | |
67af0fa4 WB |
1258 | +static void allocate_rstate(VmaReader *vmar, guint8 dev_id, |
1259 | + BlockBackend *target, bool write_zeroes) | |
1260 | +{ | |
1261 | + assert(vmar); | |
1262 | + assert(dev_id); | |
1263 | + | |
1264 | + vmar->rstate[dev_id].target = target; | |
1265 | + vmar->rstate[dev_id].write_zeroes = write_zeroes; | |
1266 | + | |
1267 | + int64_t size = vmar->devinfo[dev_id].size; | |
1268 | + | |
1269 | + int64_t bitmap_size = (size/BDRV_SECTOR_SIZE) + | |
1270 | + (VMA_CLUSTER_SIZE/BDRV_SECTOR_SIZE) * BITS_PER_LONG - 1; | |
1271 | + bitmap_size /= (VMA_CLUSTER_SIZE/BDRV_SECTOR_SIZE) * BITS_PER_LONG; | |
1272 | + | |
1273 | + vmar->rstate[dev_id].bitmap_size = bitmap_size; | |
1274 | + vmar->rstate[dev_id].bitmap = g_new0(unsigned long, bitmap_size); | |
1275 | + | |
1276 | + vmar->cluster_count += size/VMA_CLUSTER_SIZE; | |
1277 | +} | |
1278 | + | |
1279 | +int vma_reader_register_bs(VmaReader *vmar, guint8 dev_id, BlockBackend *target, | |
95259824 WB |
1280 | + bool write_zeroes, Error **errp) |
1281 | +{ | |
1282 | + assert(vmar); | |
67af0fa4 | 1283 | + assert(target != NULL); |
95259824 | 1284 | + assert(dev_id); |
67af0fa4 | 1285 | + assert(vmar->rstate[dev_id].target == NULL); |
95259824 | 1286 | + |
67af0fa4 | 1287 | + int64_t size = blk_getlength(target); |
95259824 WB |
1288 | + int64_t size_diff = size - vmar->devinfo[dev_id].size; |
1289 | + | |
1290 | + /* storage types can have different size restrictions, so it | |
1291 | + * is not always possible to create an image with exact size. | |
1292 | + * So we tolerate a size difference up to 4MB. | |
1293 | + */ | |
1294 | + if ((size_diff < 0) || (size_diff > 4*1024*1024)) { | |
1295 | + error_setg(errp, "vma_reader_register_bs for stream %s failed - " | |
1296 | + "unexpected size %zd != %zd", vmar->devinfo[dev_id].devname, | |
1297 | + size, vmar->devinfo[dev_id].size); | |
1298 | + return -1; | |
1299 | + } | |
1300 | + | |
67af0fa4 | 1301 | + allocate_rstate(vmar, dev_id, target, write_zeroes); |
95259824 WB |
1302 | + |
1303 | + return 0; | |
1304 | +} | |
1305 | + | |
1306 | +static ssize_t safe_write(int fd, void *buf, size_t count) | |
1307 | +{ | |
1308 | + ssize_t n; | |
1309 | + | |
1310 | + do { | |
1311 | + n = write(fd, buf, count); | |
1312 | + } while (n < 0 && errno == EINTR); | |
1313 | + | |
1314 | + return n; | |
1315 | +} | |
1316 | + | |
1317 | +static size_t full_write(int fd, void *buf, size_t len) | |
1318 | +{ | |
1319 | + ssize_t n; | |
1320 | + size_t total; | |
1321 | + | |
1322 | + total = 0; | |
1323 | + | |
1324 | + while (len > 0) { | |
1325 | + n = safe_write(fd, buf, len); | |
1326 | + if (n < 0) { | |
1327 | + return n; | |
1328 | + } | |
1329 | + buf += n; | |
1330 | + total += n; | |
1331 | + len -= n; | |
1332 | + } | |
1333 | + | |
1334 | + if (len) { | |
1335 | + /* incomplete write ? */ | |
1336 | + return -1; | |
1337 | + } | |
1338 | + | |
1339 | + return total; | |
1340 | +} | |
1341 | + | |
1342 | +static int restore_write_data(VmaReader *vmar, guint8 dev_id, | |
67af0fa4 | 1343 | + BlockBackend *target, int vmstate_fd, |
95259824 WB |
1344 | + unsigned char *buf, int64_t sector_num, |
1345 | + int nb_sectors, Error **errp) | |
1346 | +{ | |
1347 | + assert(vmar); | |
1348 | + | |
1349 | + if (dev_id == vmar->vmstate_stream) { | |
1350 | + if (vmstate_fd >= 0) { | |
1351 | + int len = nb_sectors * BDRV_SECTOR_SIZE; | |
1352 | + int res = full_write(vmstate_fd, buf, len); | |
1353 | + if (res < 0) { | |
1354 | + error_setg(errp, "write vmstate failed %d", res); | |
1355 | + return -1; | |
1356 | + } | |
1357 | + } | |
1358 | + } else { | |
67af0fa4 | 1359 | + int res = blk_pwrite(target, sector_num * BDRV_SECTOR_SIZE, buf, nb_sectors * BDRV_SECTOR_SIZE, 0); |
95259824 | 1360 | + if (res < 0) { |
67af0fa4 WB |
1361 | + error_setg(errp, "blk_pwrite to %s failed (%d)", |
1362 | + bdrv_get_device_name(blk_bs(target)), res); | |
95259824 WB |
1363 | + return -1; |
1364 | + } | |
1365 | + } | |
1366 | + return 0; | |
1367 | +} | |
67af0fa4 | 1368 | + |
95259824 WB |
1369 | +static int restore_extent(VmaReader *vmar, unsigned char *buf, |
1370 | + int extent_size, int vmstate_fd, | |
67af0fa4 | 1371 | + bool verbose, bool verify, Error **errp) |
95259824 WB |
1372 | +{ |
1373 | + assert(vmar); | |
1374 | + assert(buf); | |
1375 | + | |
1376 | + VmaExtentHeader *ehead = (VmaExtentHeader *)buf; | |
1377 | + int start = VMA_EXTENT_HEADER_SIZE; | |
1378 | + int i; | |
1379 | + | |
1380 | + for (i = 0; i < VMA_BLOCKS_PER_EXTENT; i++) { | |
1381 | + uint64_t block_info = GUINT64_FROM_BE(ehead->blockinfo[i]); | |
1382 | + uint64_t cluster_num = block_info & 0xffffffff; | |
1383 | + uint8_t dev_id = (block_info >> 32) & 0xff; | |
1384 | + uint16_t mask = block_info >> (32+16); | |
1385 | + int64_t max_sector; | |
1386 | + | |
1387 | + if (!dev_id) { | |
1388 | + continue; | |
1389 | + } | |
1390 | + | |
1391 | + VmaRestoreState *rstate = &vmar->rstate[dev_id]; | |
67af0fa4 | 1392 | + BlockBackend *target = NULL; |
95259824 WB |
1393 | + |
1394 | + if (dev_id != vmar->vmstate_stream) { | |
67af0fa4 WB |
1395 | + target = rstate->target; |
1396 | + if (!verify && !target) { | |
95259824 WB |
1397 | + error_setg(errp, "got wrong dev id %d", dev_id); |
1398 | + return -1; | |
1399 | + } | |
1400 | + | |
1401 | + if (vma_reader_get_bitmap(rstate, cluster_num)) { | |
1402 | + error_setg(errp, "found duplicated cluster %zd for stream %s", | |
1403 | + cluster_num, vmar->devinfo[dev_id].devname); | |
1404 | + return -1; | |
1405 | + } | |
1406 | + vma_reader_set_bitmap(rstate, cluster_num, 1); | |
1407 | + | |
1408 | + max_sector = vmar->devinfo[dev_id].size/BDRV_SECTOR_SIZE; | |
1409 | + } else { | |
1410 | + max_sector = G_MAXINT64; | |
1411 | + if (cluster_num != vmar->vmstate_clusters) { | |
1412 | + error_setg(errp, "found out of order vmstate data"); | |
1413 | + return -1; | |
1414 | + } | |
1415 | + vmar->vmstate_clusters++; | |
1416 | + } | |
1417 | + | |
1418 | + vmar->clusters_read++; | |
1419 | + | |
1420 | + if (verbose) { | |
1421 | + time_t duration = time(NULL) - vmar->start_time; | |
1422 | + int percent = (vmar->clusters_read*100)/vmar->cluster_count; | |
1423 | + if (percent != vmar->clusters_read_per) { | |
1424 | + printf("progress %d%% (read %zd bytes, duration %zd sec)\n", | |
1425 | + percent, vmar->clusters_read*VMA_CLUSTER_SIZE, | |
1426 | + duration); | |
1427 | + fflush(stdout); | |
1428 | + vmar->clusters_read_per = percent; | |
1429 | + } | |
1430 | + } | |
1431 | + | |
1432 | + /* try to write whole clusters to speedup restore */ | |
1433 | + if (mask == 0xffff) { | |
1434 | + if ((start + VMA_CLUSTER_SIZE) > extent_size) { | |
1435 | + error_setg(errp, "short vma extent - too many blocks"); | |
1436 | + return -1; | |
1437 | + } | |
1438 | + int64_t sector_num = (cluster_num * VMA_CLUSTER_SIZE) / | |
1439 | + BDRV_SECTOR_SIZE; | |
1440 | + int64_t end_sector = sector_num + | |
1441 | + VMA_CLUSTER_SIZE/BDRV_SECTOR_SIZE; | |
1442 | + | |
1443 | + if (end_sector > max_sector) { | |
1444 | + end_sector = max_sector; | |
1445 | + } | |
1446 | + | |
1447 | + if (end_sector <= sector_num) { | |
1448 | + error_setg(errp, "got wrong block address - write bejond end"); | |
1449 | + return -1; | |
1450 | + } | |
1451 | + | |
67af0fa4 WB |
1452 | + if (!verify) { |
1453 | + int nb_sectors = end_sector - sector_num; | |
1454 | + if (restore_write_data(vmar, dev_id, target, vmstate_fd, | |
1455 | + buf + start, sector_num, nb_sectors, | |
1456 | + errp) < 0) { | |
1457 | + return -1; | |
1458 | + } | |
95259824 WB |
1459 | + } |
1460 | + | |
1461 | + start += VMA_CLUSTER_SIZE; | |
1462 | + } else { | |
1463 | + int j; | |
1464 | + int bit = 1; | |
1465 | + | |
1466 | + for (j = 0; j < 16; j++) { | |
1467 | + int64_t sector_num = (cluster_num*VMA_CLUSTER_SIZE + | |
1468 | + j*VMA_BLOCK_SIZE)/BDRV_SECTOR_SIZE; | |
1469 | + | |
1470 | + int64_t end_sector = sector_num + | |
1471 | + VMA_BLOCK_SIZE/BDRV_SECTOR_SIZE; | |
1472 | + if (end_sector > max_sector) { | |
1473 | + end_sector = max_sector; | |
1474 | + } | |
1475 | + | |
1476 | + if (mask & bit) { | |
1477 | + if ((start + VMA_BLOCK_SIZE) > extent_size) { | |
1478 | + error_setg(errp, "short vma extent - too many blocks"); | |
1479 | + return -1; | |
1480 | + } | |
1481 | + | |
1482 | + if (end_sector <= sector_num) { | |
1483 | + error_setg(errp, "got wrong block address - " | |
1484 | + "write bejond end"); | |
1485 | + return -1; | |
1486 | + } | |
1487 | + | |
67af0fa4 WB |
1488 | + if (!verify) { |
1489 | + int nb_sectors = end_sector - sector_num; | |
1490 | + if (restore_write_data(vmar, dev_id, target, vmstate_fd, | |
1491 | + buf + start, sector_num, | |
1492 | + nb_sectors, errp) < 0) { | |
1493 | + return -1; | |
1494 | + } | |
95259824 WB |
1495 | + } |
1496 | + | |
1497 | + start += VMA_BLOCK_SIZE; | |
1498 | + | |
1499 | + } else { | |
1500 | + | |
67af0fa4 WB |
1501 | + |
1502 | + if (end_sector > sector_num) { | |
95259824 WB |
1503 | + /* Todo: use bdrv_co_write_zeroes (but that need to |
1504 | + * be run inside coroutine?) | |
1505 | + */ | |
1506 | + int nb_sectors = end_sector - sector_num; | |
67af0fa4 WB |
1507 | + int zero_size = BDRV_SECTOR_SIZE*nb_sectors; |
1508 | + vmar->zero_cluster_data += zero_size; | |
1509 | + if (mask != 0) { | |
1510 | + vmar->partial_zero_cluster_data += zero_size; | |
1511 | + } | |
1512 | + | |
1513 | + if (rstate->write_zeroes && !verify) { | |
1514 | + if (restore_write_data(vmar, dev_id, target, vmstate_fd, | |
1515 | + zero_vma_block, sector_num, | |
1516 | + nb_sectors, errp) < 0) { | |
1517 | + return -1; | |
1518 | + } | |
95259824 WB |
1519 | + } |
1520 | + } | |
1521 | + } | |
1522 | + | |
1523 | + bit = bit << 1; | |
1524 | + } | |
1525 | + } | |
1526 | + } | |
1527 | + | |
1528 | + if (start != extent_size) { | |
1529 | + error_setg(errp, "vma extent error - missing blocks"); | |
1530 | + return -1; | |
1531 | + } | |
1532 | + | |
1533 | + return 0; | |
1534 | +} | |
1535 | + | |
67af0fa4 WB |
1536 | +static int vma_reader_restore_full(VmaReader *vmar, int vmstate_fd, |
1537 | + bool verbose, bool verify, | |
1538 | + Error **errp) | |
95259824 WB |
1539 | +{ |
1540 | + assert(vmar); | |
1541 | + assert(vmar->head_data); | |
1542 | + | |
1543 | + int ret = 0; | |
1544 | + unsigned char buf[VMA_MAX_EXTENT_SIZE]; | |
1545 | + int buf_pos = 0; | |
1546 | + unsigned char md5sum[16]; | |
1547 | + VmaHeader *h = (VmaHeader *)vmar->head_data; | |
1548 | + | |
1549 | + vmar->start_time = time(NULL); | |
1550 | + | |
1551 | + while (1) { | |
1552 | + int bytes = full_read(vmar->fd, buf + buf_pos, sizeof(buf) - buf_pos); | |
1553 | + if (bytes < 0) { | |
1554 | + error_setg(errp, "read failed - %s", g_strerror(errno)); | |
1555 | + return -1; | |
1556 | + } | |
1557 | + | |
1558 | + buf_pos += bytes; | |
1559 | + | |
1560 | + if (!buf_pos) { | |
1561 | + break; /* EOF */ | |
1562 | + } | |
1563 | + | |
1564 | + if (buf_pos < VMA_EXTENT_HEADER_SIZE) { | |
1565 | + error_setg(errp, "read short extent (%d bytes)", buf_pos); | |
1566 | + return -1; | |
1567 | + } | |
1568 | + | |
1569 | + VmaExtentHeader *ehead = (VmaExtentHeader *)buf; | |
1570 | + | |
1571 | + /* extract md5sum */ | |
1572 | + memcpy(md5sum, ehead->md5sum, sizeof(ehead->md5sum)); | |
1573 | + memset(ehead->md5sum, 0, sizeof(ehead->md5sum)); | |
1574 | + | |
1575 | + g_checksum_reset(vmar->md5csum); | |
1576 | + g_checksum_update(vmar->md5csum, buf, VMA_EXTENT_HEADER_SIZE); | |
1577 | + gsize csize = 16; | |
1578 | + g_checksum_get_digest(vmar->md5csum, ehead->md5sum, &csize); | |
1579 | + | |
1580 | + if (memcmp(md5sum, ehead->md5sum, 16) != 0) { | |
1581 | + error_setg(errp, "wrong vma extent header chechsum"); | |
1582 | + return -1; | |
1583 | + } | |
1584 | + | |
1585 | + if (memcmp(h->uuid, ehead->uuid, sizeof(ehead->uuid)) != 0) { | |
1586 | + error_setg(errp, "wrong vma extent uuid"); | |
1587 | + return -1; | |
1588 | + } | |
1589 | + | |
1590 | + if (ehead->magic != VMA_EXTENT_MAGIC || ehead->reserved1 != 0) { | |
1591 | + error_setg(errp, "wrong vma extent header magic"); | |
1592 | + return -1; | |
1593 | + } | |
1594 | + | |
1595 | + int block_count = GUINT16_FROM_BE(ehead->block_count); | |
1596 | + int extent_size = VMA_EXTENT_HEADER_SIZE + block_count*VMA_BLOCK_SIZE; | |
1597 | + | |
1598 | + if (buf_pos < extent_size) { | |
1599 | + error_setg(errp, "short vma extent (%d < %d)", buf_pos, | |
1600 | + extent_size); | |
1601 | + return -1; | |
1602 | + } | |
1603 | + | |
1604 | + if (restore_extent(vmar, buf, extent_size, vmstate_fd, verbose, | |
67af0fa4 | 1605 | + verify, errp) < 0) { |
95259824 WB |
1606 | + return -1; |
1607 | + } | |
1608 | + | |
1609 | + if (buf_pos > extent_size) { | |
1610 | + memmove(buf, buf + extent_size, buf_pos - extent_size); | |
1611 | + buf_pos = buf_pos - extent_size; | |
1612 | + } else { | |
1613 | + buf_pos = 0; | |
1614 | + } | |
1615 | + } | |
1616 | + | |
1617 | + bdrv_drain_all(); | |
1618 | + | |
1619 | + int i; | |
1620 | + for (i = 1; i < 256; i++) { | |
1621 | + VmaRestoreState *rstate = &vmar->rstate[i]; | |
67af0fa4 | 1622 | + if (!rstate->target) { |
95259824 WB |
1623 | + continue; |
1624 | + } | |
1625 | + | |
67af0fa4 WB |
1626 | + if (blk_flush(rstate->target) < 0) { |
1627 | + error_setg(errp, "vma blk_flush %s failed", | |
95259824 WB |
1628 | + vmar->devinfo[i].devname); |
1629 | + return -1; | |
1630 | + } | |
1631 | + | |
1632 | + if (vmar->devinfo[i].size && | |
1633 | + (strcmp(vmar->devinfo[i].devname, "vmstate") != 0)) { | |
1634 | + assert(rstate->bitmap); | |
1635 | + | |
1636 | + int64_t cluster_num, end; | |
1637 | + | |
1638 | + end = (vmar->devinfo[i].size + VMA_CLUSTER_SIZE - 1) / | |
1639 | + VMA_CLUSTER_SIZE; | |
1640 | + | |
1641 | + for (cluster_num = 0; cluster_num < end; cluster_num++) { | |
1642 | + if (!vma_reader_get_bitmap(rstate, cluster_num)) { | |
1643 | + error_setg(errp, "detected missing cluster %zd " | |
1644 | + "for stream %s", cluster_num, | |
1645 | + vmar->devinfo[i].devname); | |
1646 | + return -1; | |
1647 | + } | |
1648 | + } | |
1649 | + } | |
1650 | + } | |
1651 | + | |
67af0fa4 WB |
1652 | + if (verbose) { |
1653 | + if (vmar->clusters_read) { | |
1654 | + printf("total bytes read %zd, sparse bytes %zd (%.3g%%)\n", | |
1655 | + vmar->clusters_read*VMA_CLUSTER_SIZE, | |
1656 | + vmar->zero_cluster_data, | |
1657 | + (double)(100.0*vmar->zero_cluster_data)/ | |
1658 | + (vmar->clusters_read*VMA_CLUSTER_SIZE)); | |
1659 | + | |
1660 | + int64_t datasize = vmar->clusters_read*VMA_CLUSTER_SIZE-vmar->zero_cluster_data; | |
1661 | + if (datasize) { // this does not make sense for empty files | |
1662 | + printf("space reduction due to 4K zero blocks %.3g%%\n", | |
1663 | + (double)(100.0*vmar->partial_zero_cluster_data) / datasize); | |
1664 | + } | |
1665 | + } else { | |
1666 | + printf("vma archive contains no image data\n"); | |
1667 | + } | |
1668 | + } | |
95259824 WB |
1669 | + return ret; |
1670 | +} | |
1671 | + | |
67af0fa4 WB |
1672 | +int vma_reader_restore(VmaReader *vmar, int vmstate_fd, bool verbose, |
1673 | + Error **errp) | |
1674 | +{ | |
1675 | + return vma_reader_restore_full(vmar, vmstate_fd, verbose, false, errp); | |
1676 | +} | |
1677 | + | |
1678 | +int vma_reader_verify(VmaReader *vmar, bool verbose, Error **errp) | |
1679 | +{ | |
1680 | + guint8 dev_id; | |
1681 | + | |
1682 | + for (dev_id = 1; dev_id < 255; dev_id++) { | |
1683 | + if (vma_reader_get_device_info(vmar, dev_id)) { | |
1684 | + allocate_rstate(vmar, dev_id, NULL, false); | |
1685 | + } | |
1686 | + } | |
1687 | + | |
1688 | + return vma_reader_restore_full(vmar, -1, verbose, true, errp); | |
1689 | +} | |
1690 | + | |
95259824 WB |
1691 | diff --git a/vma-writer.c b/vma-writer.c |
1692 | new file mode 100644 | |
67af0fa4 | 1693 | index 0000000000..9001cbdd2b |
95259824 WB |
1694 | --- /dev/null |
1695 | +++ b/vma-writer.c | |
67af0fa4 | 1696 | @@ -0,0 +1,771 @@ |
95259824 WB |
1697 | +/* |
1698 | + * VMA: Virtual Machine Archive | |
1699 | + * | |
1700 | + * Copyright (C) 2012 Proxmox Server Solutions | |
1701 | + * | |
1702 | + * Authors: | |
1703 | + * Dietmar Maurer (dietmar@proxmox.com) | |
1704 | + * | |
1705 | + * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
1706 | + * See the COPYING file in the top-level directory. | |
1707 | + * | |
1708 | + */ | |
1709 | + | |
1710 | +#include "qemu/osdep.h" | |
1711 | +#include <glib.h> | |
1712 | +#include <uuid/uuid.h> | |
1713 | + | |
1714 | +#include "vma.h" | |
1715 | +#include "block/block.h" | |
1716 | +#include "monitor/monitor.h" | |
1717 | +#include "qemu/main-loop.h" | |
1718 | +#include "qemu/coroutine.h" | |
1719 | +#include "qemu/cutils.h" | |
1720 | + | |
1721 | +#define DEBUG_VMA 0 | |
1722 | + | |
1723 | +#define DPRINTF(fmt, ...)\ | |
1724 | + do { if (DEBUG_VMA) { printf("vma: " fmt, ## __VA_ARGS__); } } while (0) | |
1725 | + | |
1726 | +#define WRITE_BUFFERS 5 | |
67af0fa4 WB |
1727 | +#define HEADER_CLUSTERS 8 |
1728 | +#define HEADERBUF_SIZE (VMA_CLUSTER_SIZE*HEADER_CLUSTERS) | |
95259824 WB |
1729 | + |
1730 | +struct VmaWriter { | |
1731 | + int fd; | |
1732 | + FILE *cmd; | |
1733 | + int status; | |
1734 | + char errmsg[8192]; | |
1735 | + uuid_t uuid; | |
1736 | + bool header_written; | |
1737 | + bool closed; | |
1738 | + | |
1739 | + /* we always write extents */ | |
67af0fa4 | 1740 | + unsigned char *outbuf; |
95259824 WB |
1741 | + int outbuf_pos; /* in bytes */ |
1742 | + int outbuf_count; /* in VMA_BLOCKS */ | |
1743 | + uint64_t outbuf_block_info[VMA_BLOCKS_PER_EXTENT]; | |
1744 | + | |
67af0fa4 | 1745 | + unsigned char *headerbuf; |
95259824 WB |
1746 | + |
1747 | + GChecksum *md5csum; | |
95259824 WB |
1748 | + CoMutex flush_lock; |
1749 | + Coroutine *co_writer; | |
1750 | + | |
1751 | + /* drive informations */ | |
1752 | + VmaStreamInfo stream_info[256]; | |
1753 | + guint stream_count; | |
1754 | + | |
1755 | + guint8 vmstate_stream; | |
1756 | + uint32_t vmstate_clusters; | |
1757 | + | |
1758 | + /* header blob table */ | |
1759 | + char *header_blob_table; | |
1760 | + uint32_t header_blob_table_size; | |
1761 | + uint32_t header_blob_table_pos; | |
1762 | + | |
1763 | + /* store for config blobs */ | |
1764 | + uint32_t config_names[VMA_MAX_CONFIGS]; /* offset into blob_buffer table */ | |
1765 | + uint32_t config_data[VMA_MAX_CONFIGS]; /* offset into blob_buffer table */ | |
1766 | + uint32_t config_count; | |
1767 | +}; | |
1768 | + | |
1769 | +void vma_writer_set_error(VmaWriter *vmaw, const char *fmt, ...) | |
1770 | +{ | |
1771 | + va_list ap; | |
1772 | + | |
1773 | + if (vmaw->status < 0) { | |
1774 | + return; | |
1775 | + } | |
1776 | + | |
1777 | + vmaw->status = -1; | |
1778 | + | |
1779 | + va_start(ap, fmt); | |
1780 | + g_vsnprintf(vmaw->errmsg, sizeof(vmaw->errmsg), fmt, ap); | |
1781 | + va_end(ap); | |
1782 | + | |
1783 | + DPRINTF("vma_writer_set_error: %s\n", vmaw->errmsg); | |
1784 | +} | |
1785 | + | |
1786 | +static uint32_t allocate_header_blob(VmaWriter *vmaw, const char *data, | |
1787 | + size_t len) | |
1788 | +{ | |
1789 | + if (len > 65535) { | |
1790 | + return 0; | |
1791 | + } | |
1792 | + | |
1793 | + if (!vmaw->header_blob_table || | |
1794 | + (vmaw->header_blob_table_size < | |
1795 | + (vmaw->header_blob_table_pos + len + 2))) { | |
1796 | + int newsize = vmaw->header_blob_table_size + ((len + 2 + 511)/512)*512; | |
1797 | + | |
1798 | + vmaw->header_blob_table = g_realloc(vmaw->header_blob_table, newsize); | |
1799 | + memset(vmaw->header_blob_table + vmaw->header_blob_table_size, | |
1800 | + 0, newsize - vmaw->header_blob_table_size); | |
1801 | + vmaw->header_blob_table_size = newsize; | |
1802 | + } | |
1803 | + | |
1804 | + uint32_t cpos = vmaw->header_blob_table_pos; | |
1805 | + vmaw->header_blob_table[cpos] = len & 255; | |
1806 | + vmaw->header_blob_table[cpos+1] = (len >> 8) & 255; | |
1807 | + memcpy(vmaw->header_blob_table + cpos + 2, data, len); | |
1808 | + vmaw->header_blob_table_pos += len + 2; | |
1809 | + return cpos; | |
1810 | +} | |
1811 | + | |
1812 | +static uint32_t allocate_header_string(VmaWriter *vmaw, const char *str) | |
1813 | +{ | |
1814 | + assert(vmaw); | |
1815 | + | |
1816 | + size_t len = strlen(str) + 1; | |
1817 | + | |
1818 | + return allocate_header_blob(vmaw, str, len); | |
1819 | +} | |
1820 | + | |
1821 | +int vma_writer_add_config(VmaWriter *vmaw, const char *name, gpointer data, | |
1822 | + gsize len) | |
1823 | +{ | |
1824 | + assert(vmaw); | |
1825 | + assert(!vmaw->header_written); | |
1826 | + assert(vmaw->config_count < VMA_MAX_CONFIGS); | |
1827 | + assert(name); | |
1828 | + assert(data); | |
95259824 WB |
1829 | + |
1830 | + gchar *basename = g_path_get_basename(name); | |
1831 | + uint32_t name_ptr = allocate_header_string(vmaw, basename); | |
1832 | + g_free(basename); | |
1833 | + | |
1834 | + if (!name_ptr) { | |
1835 | + return -1; | |
1836 | + } | |
1837 | + | |
1838 | + uint32_t data_ptr = allocate_header_blob(vmaw, data, len); | |
1839 | + if (!data_ptr) { | |
1840 | + return -1; | |
1841 | + } | |
1842 | + | |
1843 | + vmaw->config_names[vmaw->config_count] = name_ptr; | |
1844 | + vmaw->config_data[vmaw->config_count] = data_ptr; | |
1845 | + | |
1846 | + vmaw->config_count++; | |
1847 | + | |
1848 | + return 0; | |
1849 | +} | |
1850 | + | |
1851 | +int vma_writer_register_stream(VmaWriter *vmaw, const char *devname, | |
1852 | + size_t size) | |
1853 | +{ | |
1854 | + assert(vmaw); | |
1855 | + assert(devname); | |
1856 | + assert(!vmaw->status); | |
1857 | + | |
1858 | + if (vmaw->header_written) { | |
1859 | + vma_writer_set_error(vmaw, "vma_writer_register_stream: header " | |
1860 | + "already written"); | |
1861 | + return -1; | |
1862 | + } | |
1863 | + | |
1864 | + guint n = vmaw->stream_count + 1; | |
1865 | + | |
1866 | + /* we can have dev_ids form 1 to 255 (0 reserved) | |
1867 | + * 255(-1) reseverd for safety | |
1868 | + */ | |
1869 | + if (n > 254) { | |
1870 | + vma_writer_set_error(vmaw, "vma_writer_register_stream: " | |
1871 | + "too many drives"); | |
1872 | + return -1; | |
1873 | + } | |
1874 | + | |
1875 | + if (size <= 0) { | |
1876 | + vma_writer_set_error(vmaw, "vma_writer_register_stream: " | |
1877 | + "got strange size %zd", size); | |
1878 | + return -1; | |
1879 | + } | |
1880 | + | |
1881 | + DPRINTF("vma_writer_register_stream %s %zu %d\n", devname, size, n); | |
1882 | + | |
1883 | + vmaw->stream_info[n].devname = g_strdup(devname); | |
1884 | + vmaw->stream_info[n].size = size; | |
1885 | + | |
1886 | + vmaw->stream_info[n].cluster_count = (size + VMA_CLUSTER_SIZE - 1) / | |
1887 | + VMA_CLUSTER_SIZE; | |
1888 | + | |
1889 | + vmaw->stream_count = n; | |
1890 | + | |
1891 | + if (strcmp(devname, "vmstate") == 0) { | |
1892 | + vmaw->vmstate_stream = n; | |
1893 | + } | |
1894 | + | |
1895 | + return n; | |
1896 | +} | |
1897 | + | |
1898 | +static void vma_co_continue_write(void *opaque) | |
1899 | +{ | |
1900 | + VmaWriter *vmaw = opaque; | |
1901 | + | |
1902 | + DPRINTF("vma_co_continue_write\n"); | |
1903 | + qemu_coroutine_enter(vmaw->co_writer); | |
1904 | +} | |
1905 | + | |
1906 | +static ssize_t coroutine_fn | |
67af0fa4 | 1907 | +vma_queue_write(VmaWriter *vmaw, const void *buf, size_t bytes) |
95259824 | 1908 | +{ |
67af0fa4 | 1909 | + DPRINTF("vma_queue_write enter %zd\n", bytes); |
95259824 | 1910 | + |
67af0fa4 WB |
1911 | + assert(vmaw); |
1912 | + assert(buf); | |
1913 | + assert(bytes <= VMA_MAX_EXTENT_SIZE); | |
95259824 | 1914 | + |
67af0fa4 WB |
1915 | + size_t done = 0; |
1916 | + ssize_t ret; | |
95259824 WB |
1917 | + |
1918 | + assert(vmaw->co_writer == NULL); | |
1919 | + | |
1920 | + vmaw->co_writer = qemu_coroutine_self(); | |
1921 | + | |
95259824 | 1922 | + while (done < bytes) { |
67af0fa4 WB |
1923 | + aio_set_fd_handler(qemu_get_aio_context(), vmaw->fd, false, NULL, vma_co_continue_write, NULL, vmaw); |
1924 | + qemu_coroutine_yield(); | |
1925 | + aio_set_fd_handler(qemu_get_aio_context(), vmaw->fd, false, NULL, NULL, NULL, NULL); | |
1926 | + if (vmaw->status < 0) { | |
1927 | + DPRINTF("vma_queue_write detected canceled backup\n"); | |
1928 | + done = -1; | |
1929 | + break; | |
1930 | + } | |
95259824 WB |
1931 | + ret = write(vmaw->fd, buf + done, bytes - done); |
1932 | + if (ret > 0) { | |
1933 | + done += ret; | |
67af0fa4 | 1934 | + DPRINTF("vma_queue_write written %zd %zd\n", done, ret); |
95259824 WB |
1935 | + } else if (ret < 0) { |
1936 | + if (errno == EAGAIN || errno == EWOULDBLOCK) { | |
67af0fa4 WB |
1937 | + /* try again */ |
1938 | + } else { | |
1939 | + vma_writer_set_error(vmaw, "vma_queue_write: write error - %s", | |
95259824 WB |
1940 | + g_strerror(errno)); |
1941 | + done = -1; /* always return failure for partial writes */ | |
1942 | + break; | |
1943 | + } | |
1944 | + } else if (ret == 0) { | |
1945 | + /* should not happen - simply try again */ | |
1946 | + } | |
1947 | + } | |
1948 | + | |
95259824 WB |
1949 | + vmaw->co_writer = NULL; |
1950 | + | |
67af0fa4 | 1951 | + return (done == bytes) ? bytes : -1; |
95259824 WB |
1952 | +} |
1953 | + | |
1954 | +VmaWriter *vma_writer_create(const char *filename, uuid_t uuid, Error **errp) | |
1955 | +{ | |
1956 | + const char *p; | |
1957 | + | |
1958 | + assert(sizeof(VmaHeader) == (4096 + 8192)); | |
1959 | + assert(G_STRUCT_OFFSET(VmaHeader, config_names) == 2044); | |
1960 | + assert(G_STRUCT_OFFSET(VmaHeader, config_data) == 3068); | |
1961 | + assert(G_STRUCT_OFFSET(VmaHeader, dev_info) == 4096); | |
1962 | + assert(sizeof(VmaExtentHeader) == 512); | |
1963 | + | |
1964 | + VmaWriter *vmaw = g_new0(VmaWriter, 1); | |
1965 | + vmaw->fd = -1; | |
1966 | + | |
1967 | + vmaw->md5csum = g_checksum_new(G_CHECKSUM_MD5); | |
1968 | + if (!vmaw->md5csum) { | |
1969 | + error_setg(errp, "can't allocate cmsum\n"); | |
1970 | + goto err; | |
1971 | + } | |
1972 | + | |
1973 | + if (strstart(filename, "exec:", &p)) { | |
1974 | + vmaw->cmd = popen(p, "w"); | |
1975 | + if (vmaw->cmd == NULL) { | |
1976 | + error_setg(errp, "can't popen command '%s' - %s\n", p, | |
1977 | + g_strerror(errno)); | |
1978 | + goto err; | |
1979 | + } | |
1980 | + vmaw->fd = fileno(vmaw->cmd); | |
1981 | + | |
67af0fa4 | 1982 | + /* try to use O_NONBLOCK */ |
95259824 | 1983 | + fcntl(vmaw->fd, F_SETFL, fcntl(vmaw->fd, F_GETFL)|O_NONBLOCK); |
95259824 WB |
1984 | + |
1985 | + } else { | |
1986 | + struct stat st; | |
1987 | + int oflags; | |
1988 | + const char *tmp_id_str; | |
1989 | + | |
1990 | + if ((stat(filename, &st) == 0) && S_ISFIFO(st.st_mode)) { | |
67af0fa4 | 1991 | + oflags = O_NONBLOCK|O_WRONLY; |
95259824 WB |
1992 | + vmaw->fd = qemu_open(filename, oflags, 0644); |
1993 | + } else if (strstart(filename, "/dev/fdset/", &tmp_id_str)) { | |
67af0fa4 | 1994 | + oflags = O_NONBLOCK|O_WRONLY; |
95259824 WB |
1995 | + vmaw->fd = qemu_open(filename, oflags, 0644); |
1996 | + } else if (strstart(filename, "/dev/fdname/", &tmp_id_str)) { | |
1997 | + vmaw->fd = monitor_get_fd(cur_mon, tmp_id_str, errp); | |
1998 | + if (vmaw->fd < 0) { | |
1999 | + goto err; | |
2000 | + } | |
67af0fa4 | 2001 | + /* try to use O_NONBLOCK */ |
95259824 | 2002 | + fcntl(vmaw->fd, F_SETFL, fcntl(vmaw->fd, F_GETFL)|O_NONBLOCK); |
95259824 WB |
2003 | + } else { |
2004 | + oflags = O_NONBLOCK|O_DIRECT|O_WRONLY|O_CREAT|O_EXCL; | |
2005 | + vmaw->fd = qemu_open(filename, oflags, 0644); | |
2006 | + } | |
2007 | + | |
2008 | + if (vmaw->fd < 0) { | |
2009 | + error_setg(errp, "can't open file %s - %s\n", filename, | |
2010 | + g_strerror(errno)); | |
2011 | + goto err; | |
2012 | + } | |
2013 | + } | |
2014 | + | |
2015 | + /* we use O_DIRECT, so we need to align IO buffers */ | |
67af0fa4 WB |
2016 | + |
2017 | + vmaw->outbuf = qemu_memalign(512, VMA_MAX_EXTENT_SIZE); | |
2018 | + vmaw->headerbuf = qemu_memalign(512, HEADERBUF_SIZE); | |
95259824 WB |
2019 | + |
2020 | + vmaw->outbuf_count = 0; | |
2021 | + vmaw->outbuf_pos = VMA_EXTENT_HEADER_SIZE; | |
2022 | + | |
2023 | + vmaw->header_blob_table_pos = 1; /* start at pos 1 */ | |
2024 | + | |
95259824 | 2025 | + qemu_co_mutex_init(&vmaw->flush_lock); |
95259824 WB |
2026 | + |
2027 | + uuid_copy(vmaw->uuid, uuid); | |
2028 | + | |
2029 | + return vmaw; | |
2030 | + | |
2031 | +err: | |
2032 | + if (vmaw) { | |
2033 | + if (vmaw->cmd) { | |
2034 | + pclose(vmaw->cmd); | |
2035 | + } else if (vmaw->fd >= 0) { | |
2036 | + close(vmaw->fd); | |
2037 | + } | |
2038 | + | |
2039 | + if (vmaw->md5csum) { | |
2040 | + g_checksum_free(vmaw->md5csum); | |
2041 | + } | |
2042 | + | |
2043 | + g_free(vmaw); | |
2044 | + } | |
2045 | + | |
2046 | + return NULL; | |
2047 | +} | |
2048 | + | |
2049 | +static int coroutine_fn vma_write_header(VmaWriter *vmaw) | |
2050 | +{ | |
2051 | + assert(vmaw); | |
67af0fa4 | 2052 | + unsigned char *buf = vmaw->headerbuf; |
95259824 WB |
2053 | + VmaHeader *head = (VmaHeader *)buf; |
2054 | + | |
2055 | + int i; | |
2056 | + | |
2057 | + DPRINTF("VMA WRITE HEADER\n"); | |
2058 | + | |
2059 | + if (vmaw->status < 0) { | |
2060 | + return vmaw->status; | |
2061 | + } | |
2062 | + | |
67af0fa4 | 2063 | + memset(buf, 0, HEADERBUF_SIZE); |
95259824 WB |
2064 | + |
2065 | + head->magic = VMA_MAGIC; | |
2066 | + head->version = GUINT32_TO_BE(1); /* v1 */ | |
2067 | + memcpy(head->uuid, vmaw->uuid, 16); | |
2068 | + | |
2069 | + time_t ctime = time(NULL); | |
2070 | + head->ctime = GUINT64_TO_BE(ctime); | |
2071 | + | |
95259824 WB |
2072 | + for (i = 0; i < VMA_MAX_CONFIGS; i++) { |
2073 | + head->config_names[i] = GUINT32_TO_BE(vmaw->config_names[i]); | |
2074 | + head->config_data[i] = GUINT32_TO_BE(vmaw->config_data[i]); | |
2075 | + } | |
2076 | + | |
2077 | + /* 32 bytes per device (12 used currently) = 8192 bytes max */ | |
2078 | + for (i = 1; i <= 254; i++) { | |
2079 | + VmaStreamInfo *si = &vmaw->stream_info[i]; | |
2080 | + if (si->size) { | |
2081 | + assert(si->devname); | |
2082 | + uint32_t devname_ptr = allocate_header_string(vmaw, si->devname); | |
2083 | + if (!devname_ptr) { | |
2084 | + return -1; | |
2085 | + } | |
2086 | + head->dev_info[i].devname_ptr = GUINT32_TO_BE(devname_ptr); | |
2087 | + head->dev_info[i].size = GUINT64_TO_BE(si->size); | |
2088 | + } | |
2089 | + } | |
2090 | + | |
2091 | + uint32_t header_size = sizeof(VmaHeader) + vmaw->header_blob_table_size; | |
2092 | + head->header_size = GUINT32_TO_BE(header_size); | |
2093 | + | |
67af0fa4 | 2094 | + if (header_size > HEADERBUF_SIZE) { |
95259824 WB |
2095 | + return -1; /* just to be sure */ |
2096 | + } | |
2097 | + | |
2098 | + uint32_t blob_buffer_offset = sizeof(VmaHeader); | |
2099 | + memcpy(buf + blob_buffer_offset, vmaw->header_blob_table, | |
2100 | + vmaw->header_blob_table_size); | |
2101 | + head->blob_buffer_offset = GUINT32_TO_BE(blob_buffer_offset); | |
2102 | + head->blob_buffer_size = GUINT32_TO_BE(vmaw->header_blob_table_pos); | |
2103 | + | |
2104 | + g_checksum_reset(vmaw->md5csum); | |
2105 | + g_checksum_update(vmaw->md5csum, (const guchar *)buf, header_size); | |
2106 | + gsize csize = 16; | |
2107 | + g_checksum_get_digest(vmaw->md5csum, (guint8 *)(head->md5sum), &csize); | |
2108 | + | |
2109 | + return vma_queue_write(vmaw, buf, header_size); | |
2110 | +} | |
2111 | + | |
2112 | +static int coroutine_fn vma_writer_flush(VmaWriter *vmaw) | |
2113 | +{ | |
2114 | + assert(vmaw); | |
2115 | + | |
2116 | + int ret; | |
2117 | + int i; | |
2118 | + | |
2119 | + if (vmaw->status < 0) { | |
2120 | + return vmaw->status; | |
2121 | + } | |
2122 | + | |
2123 | + if (!vmaw->header_written) { | |
2124 | + vmaw->header_written = true; | |
2125 | + ret = vma_write_header(vmaw); | |
2126 | + if (ret < 0) { | |
2127 | + vma_writer_set_error(vmaw, "vma_writer_flush: write header failed"); | |
2128 | + return ret; | |
2129 | + } | |
2130 | + } | |
2131 | + | |
2132 | + DPRINTF("VMA WRITE FLUSH %d %d\n", vmaw->outbuf_count, vmaw->outbuf_pos); | |
2133 | + | |
2134 | + | |
2135 | + VmaExtentHeader *ehead = (VmaExtentHeader *)vmaw->outbuf; | |
2136 | + | |
2137 | + ehead->magic = VMA_EXTENT_MAGIC; | |
2138 | + ehead->reserved1 = 0; | |
2139 | + | |
2140 | + for (i = 0; i < VMA_BLOCKS_PER_EXTENT; i++) { | |
2141 | + ehead->blockinfo[i] = GUINT64_TO_BE(vmaw->outbuf_block_info[i]); | |
2142 | + } | |
2143 | + | |
2144 | + guint16 block_count = (vmaw->outbuf_pos - VMA_EXTENT_HEADER_SIZE) / | |
2145 | + VMA_BLOCK_SIZE; | |
2146 | + | |
2147 | + ehead->block_count = GUINT16_TO_BE(block_count); | |
2148 | + | |
2149 | + memcpy(ehead->uuid, vmaw->uuid, sizeof(ehead->uuid)); | |
2150 | + memset(ehead->md5sum, 0, sizeof(ehead->md5sum)); | |
2151 | + | |
2152 | + g_checksum_reset(vmaw->md5csum); | |
2153 | + g_checksum_update(vmaw->md5csum, vmaw->outbuf, VMA_EXTENT_HEADER_SIZE); | |
2154 | + gsize csize = 16; | |
2155 | + g_checksum_get_digest(vmaw->md5csum, ehead->md5sum, &csize); | |
2156 | + | |
2157 | + int bytes = vmaw->outbuf_pos; | |
2158 | + ret = vma_queue_write(vmaw, vmaw->outbuf, bytes); | |
2159 | + if (ret != bytes) { | |
2160 | + vma_writer_set_error(vmaw, "vma_writer_flush: failed write"); | |
2161 | + } | |
2162 | + | |
2163 | + vmaw->outbuf_count = 0; | |
2164 | + vmaw->outbuf_pos = VMA_EXTENT_HEADER_SIZE; | |
2165 | + | |
2166 | + for (i = 0; i < VMA_BLOCKS_PER_EXTENT; i++) { | |
2167 | + vmaw->outbuf_block_info[i] = 0; | |
2168 | + } | |
2169 | + | |
2170 | + return vmaw->status; | |
2171 | +} | |
2172 | + | |
2173 | +static int vma_count_open_streams(VmaWriter *vmaw) | |
2174 | +{ | |
2175 | + g_assert(vmaw != NULL); | |
2176 | + | |
2177 | + int i; | |
2178 | + int open_drives = 0; | |
2179 | + for (i = 0; i <= 255; i++) { | |
2180 | + if (vmaw->stream_info[i].size && !vmaw->stream_info[i].finished) { | |
2181 | + open_drives++; | |
2182 | + } | |
2183 | + } | |
2184 | + | |
2185 | + return open_drives; | |
2186 | +} | |
2187 | + | |
67af0fa4 WB |
2188 | + |
2189 | +/** | |
2190 | + * You need to call this if the vma archive does not contain | |
2191 | + * any data stream. | |
2192 | + */ | |
2193 | +int coroutine_fn | |
2194 | +vma_writer_flush_output(VmaWriter *vmaw) | |
2195 | +{ | |
2196 | + qemu_co_mutex_lock(&vmaw->flush_lock); | |
2197 | + int ret = vma_writer_flush(vmaw); | |
2198 | + qemu_co_mutex_unlock(&vmaw->flush_lock); | |
2199 | + if (ret < 0) { | |
2200 | + vma_writer_set_error(vmaw, "vma_writer_flush_header failed"); | |
2201 | + } | |
2202 | + return ret; | |
2203 | +} | |
2204 | + | |
95259824 WB |
2205 | +/** |
2206 | + * all jobs should call this when there is no more data | |
2207 | + * Returns: number of remaining stream (0 ==> finished) | |
2208 | + */ | |
2209 | +int coroutine_fn | |
2210 | +vma_writer_close_stream(VmaWriter *vmaw, uint8_t dev_id) | |
2211 | +{ | |
2212 | + g_assert(vmaw != NULL); | |
2213 | + | |
2214 | + DPRINTF("vma_writer_set_status %d\n", dev_id); | |
2215 | + if (!vmaw->stream_info[dev_id].size) { | |
2216 | + vma_writer_set_error(vmaw, "vma_writer_close_stream: " | |
2217 | + "no such stream %d", dev_id); | |
2218 | + return -1; | |
2219 | + } | |
2220 | + if (vmaw->stream_info[dev_id].finished) { | |
2221 | + vma_writer_set_error(vmaw, "vma_writer_close_stream: " | |
2222 | + "stream already closed %d", dev_id); | |
2223 | + return -1; | |
2224 | + } | |
2225 | + | |
2226 | + vmaw->stream_info[dev_id].finished = true; | |
2227 | + | |
2228 | + int open_drives = vma_count_open_streams(vmaw); | |
2229 | + | |
2230 | + if (open_drives <= 0) { | |
2231 | + DPRINTF("vma_writer_set_status all drives completed\n"); | |
67af0fa4 | 2232 | + vma_writer_flush_output(vmaw); |
95259824 WB |
2233 | + } |
2234 | + | |
2235 | + return open_drives; | |
2236 | +} | |
2237 | + | |
2238 | +int vma_writer_get_status(VmaWriter *vmaw, VmaStatus *status) | |
2239 | +{ | |
2240 | + int i; | |
2241 | + | |
2242 | + g_assert(vmaw != NULL); | |
2243 | + | |
2244 | + if (status) { | |
2245 | + status->status = vmaw->status; | |
2246 | + g_strlcpy(status->errmsg, vmaw->errmsg, sizeof(status->errmsg)); | |
2247 | + for (i = 0; i <= 255; i++) { | |
2248 | + status->stream_info[i] = vmaw->stream_info[i]; | |
2249 | + } | |
2250 | + | |
2251 | + uuid_unparse_lower(vmaw->uuid, status->uuid_str); | |
2252 | + } | |
2253 | + | |
2254 | + status->closed = vmaw->closed; | |
2255 | + | |
2256 | + return vmaw->status; | |
2257 | +} | |
2258 | + | |
2259 | +static int vma_writer_get_buffer(VmaWriter *vmaw) | |
2260 | +{ | |
2261 | + int ret = 0; | |
2262 | + | |
2263 | + qemu_co_mutex_lock(&vmaw->flush_lock); | |
2264 | + | |
2265 | + /* wait until buffer is available */ | |
2266 | + while (vmaw->outbuf_count >= (VMA_BLOCKS_PER_EXTENT - 1)) { | |
2267 | + ret = vma_writer_flush(vmaw); | |
2268 | + if (ret < 0) { | |
2269 | + vma_writer_set_error(vmaw, "vma_writer_get_buffer: flush failed"); | |
2270 | + break; | |
2271 | + } | |
2272 | + } | |
2273 | + | |
2274 | + qemu_co_mutex_unlock(&vmaw->flush_lock); | |
2275 | + | |
2276 | + return ret; | |
2277 | +} | |
2278 | + | |
2279 | + | |
2280 | +int64_t coroutine_fn | |
2281 | +vma_writer_write(VmaWriter *vmaw, uint8_t dev_id, int64_t cluster_num, | |
2282 | + unsigned char *buf, size_t *zero_bytes) | |
2283 | +{ | |
2284 | + g_assert(vmaw != NULL); | |
2285 | + g_assert(zero_bytes != NULL); | |
2286 | + | |
2287 | + *zero_bytes = 0; | |
2288 | + | |
2289 | + if (vmaw->status < 0) { | |
2290 | + return vmaw->status; | |
2291 | + } | |
2292 | + | |
2293 | + if (!dev_id || !vmaw->stream_info[dev_id].size) { | |
2294 | + vma_writer_set_error(vmaw, "vma_writer_write: " | |
2295 | + "no such stream %d", dev_id); | |
2296 | + return -1; | |
2297 | + } | |
2298 | + | |
2299 | + if (vmaw->stream_info[dev_id].finished) { | |
2300 | + vma_writer_set_error(vmaw, "vma_writer_write: " | |
2301 | + "stream already closed %d", dev_id); | |
2302 | + return -1; | |
2303 | + } | |
2304 | + | |
2305 | + | |
2306 | + if (cluster_num >= (((uint64_t)1)<<32)) { | |
2307 | + vma_writer_set_error(vmaw, "vma_writer_write: " | |
2308 | + "cluster number out of range"); | |
2309 | + return -1; | |
2310 | + } | |
2311 | + | |
2312 | + if (dev_id == vmaw->vmstate_stream) { | |
2313 | + if (cluster_num != vmaw->vmstate_clusters) { | |
2314 | + vma_writer_set_error(vmaw, "vma_writer_write: " | |
2315 | + "non sequential vmstate write"); | |
2316 | + } | |
2317 | + vmaw->vmstate_clusters++; | |
2318 | + } else if (cluster_num >= vmaw->stream_info[dev_id].cluster_count) { | |
2319 | + vma_writer_set_error(vmaw, "vma_writer_write: cluster number too big"); | |
2320 | + return -1; | |
2321 | + } | |
2322 | + | |
2323 | + /* wait until buffer is available */ | |
2324 | + if (vma_writer_get_buffer(vmaw) < 0) { | |
2325 | + vma_writer_set_error(vmaw, "vma_writer_write: " | |
2326 | + "vma_writer_get_buffer failed"); | |
2327 | + return -1; | |
2328 | + } | |
2329 | + | |
2330 | + DPRINTF("VMA WRITE %d %zd\n", dev_id, cluster_num); | |
2331 | + | |
2332 | + uint16_t mask = 0; | |
2333 | + | |
2334 | + if (buf) { | |
2335 | + int i; | |
2336 | + int bit = 1; | |
2337 | + for (i = 0; i < 16; i++) { | |
2338 | + unsigned char *vmablock = buf + (i*VMA_BLOCK_SIZE); | |
2339 | + if (!buffer_is_zero(vmablock, VMA_BLOCK_SIZE)) { | |
2340 | + mask |= bit; | |
2341 | + memcpy(vmaw->outbuf + vmaw->outbuf_pos, vmablock, | |
2342 | + VMA_BLOCK_SIZE); | |
2343 | + vmaw->outbuf_pos += VMA_BLOCK_SIZE; | |
2344 | + } else { | |
2345 | + DPRINTF("VMA WRITE %zd ZERO BLOCK %d\n", cluster_num, i); | |
2346 | + vmaw->stream_info[dev_id].zero_bytes += VMA_BLOCK_SIZE; | |
2347 | + *zero_bytes += VMA_BLOCK_SIZE; | |
2348 | + } | |
2349 | + | |
2350 | + bit = bit << 1; | |
2351 | + } | |
2352 | + } else { | |
2353 | + DPRINTF("VMA WRITE %zd ZERO CLUSTER\n", cluster_num); | |
2354 | + vmaw->stream_info[dev_id].zero_bytes += VMA_CLUSTER_SIZE; | |
2355 | + *zero_bytes += VMA_CLUSTER_SIZE; | |
2356 | + } | |
2357 | + | |
2358 | + uint64_t block_info = ((uint64_t)mask) << (32+16); | |
2359 | + block_info |= ((uint64_t)dev_id) << 32; | |
2360 | + block_info |= (cluster_num & 0xffffffff); | |
2361 | + vmaw->outbuf_block_info[vmaw->outbuf_count] = block_info; | |
2362 | + | |
2363 | + DPRINTF("VMA WRITE MASK %zd %zx\n", cluster_num, block_info); | |
2364 | + | |
2365 | + vmaw->outbuf_count++; | |
2366 | + | |
2367 | + /** NOTE: We allways write whole clusters, but we correctly set | |
2368 | + * transferred bytes. So transferred == size when when everything | |
2369 | + * went OK. | |
2370 | + */ | |
2371 | + size_t transferred = VMA_CLUSTER_SIZE; | |
2372 | + | |
2373 | + if (dev_id != vmaw->vmstate_stream) { | |
2374 | + uint64_t last = (cluster_num + 1) * VMA_CLUSTER_SIZE; | |
2375 | + if (last > vmaw->stream_info[dev_id].size) { | |
2376 | + uint64_t diff = last - vmaw->stream_info[dev_id].size; | |
2377 | + if (diff >= VMA_CLUSTER_SIZE) { | |
2378 | + vma_writer_set_error(vmaw, "vma_writer_write: " | |
2379 | + "read after last cluster"); | |
2380 | + return -1; | |
2381 | + } | |
2382 | + transferred -= diff; | |
2383 | + } | |
2384 | + } | |
2385 | + | |
2386 | + vmaw->stream_info[dev_id].transferred += transferred; | |
2387 | + | |
2388 | + return transferred; | |
2389 | +} | |
2390 | + | |
67af0fa4 WB |
2391 | +void vma_writer_error_propagate(VmaWriter *vmaw, Error **errp) |
2392 | +{ | |
2393 | + if (vmaw->status < 0 && *errp == NULL) { | |
2394 | + error_setg(errp, "%s", vmaw->errmsg); | |
2395 | + } | |
2396 | +} | |
2397 | + | |
95259824 WB |
2398 | +int vma_writer_close(VmaWriter *vmaw, Error **errp) |
2399 | +{ | |
2400 | + g_assert(vmaw != NULL); | |
2401 | + | |
2402 | + int i; | |
2403 | + | |
67af0fa4 WB |
2404 | + while (vmaw->co_writer) { |
2405 | + aio_poll(qemu_get_aio_context(), true); | |
95259824 WB |
2406 | + } |
2407 | + | |
67af0fa4 WB |
2408 | + assert(vmaw->co_writer == NULL); |
2409 | + | |
95259824 WB |
2410 | + if (vmaw->cmd) { |
2411 | + if (pclose(vmaw->cmd) < 0) { | |
2412 | + vma_writer_set_error(vmaw, "vma_writer_close: " | |
2413 | + "pclose failed - %s", g_strerror(errno)); | |
2414 | + } | |
2415 | + } else { | |
2416 | + if (close(vmaw->fd) < 0) { | |
2417 | + vma_writer_set_error(vmaw, "vma_writer_close: " | |
2418 | + "close failed - %s", g_strerror(errno)); | |
2419 | + } | |
2420 | + } | |
2421 | + | |
2422 | + for (i = 0; i <= 255; i++) { | |
2423 | + VmaStreamInfo *si = &vmaw->stream_info[i]; | |
2424 | + if (si->size) { | |
2425 | + if (!si->finished) { | |
2426 | + vma_writer_set_error(vmaw, "vma_writer_close: " | |
2427 | + "detected open stream '%s'", si->devname); | |
2428 | + } else if ((si->transferred != si->size) && | |
2429 | + (i != vmaw->vmstate_stream)) { | |
2430 | + vma_writer_set_error(vmaw, "vma_writer_close: " | |
2431 | + "incomplete stream '%s' (%zd != %zd)", | |
2432 | + si->devname, si->transferred, si->size); | |
2433 | + } | |
2434 | + } | |
2435 | + } | |
2436 | + | |
2437 | + for (i = 0; i <= 255; i++) { | |
2438 | + vmaw->stream_info[i].finished = 1; /* mark as closed */ | |
2439 | + } | |
2440 | + | |
2441 | + vmaw->closed = 1; | |
2442 | + | |
2443 | + if (vmaw->status < 0 && *errp == NULL) { | |
2444 | + error_setg(errp, "%s", vmaw->errmsg); | |
2445 | + } | |
2446 | + | |
2447 | + return vmaw->status; | |
2448 | +} | |
2449 | + | |
2450 | +void vma_writer_destroy(VmaWriter *vmaw) | |
2451 | +{ | |
2452 | + assert(vmaw); | |
2453 | + | |
2454 | + int i; | |
2455 | + | |
2456 | + for (i = 0; i <= 255; i++) { | |
2457 | + if (vmaw->stream_info[i].devname) { | |
2458 | + g_free(vmaw->stream_info[i].devname); | |
2459 | + } | |
2460 | + } | |
2461 | + | |
2462 | + if (vmaw->md5csum) { | |
2463 | + g_checksum_free(vmaw->md5csum); | |
2464 | + } | |
2465 | + | |
95259824 WB |
2466 | + g_free(vmaw); |
2467 | +} | |
2468 | diff --git a/vma.c b/vma.c | |
2469 | new file mode 100644 | |
67af0fa4 | 2470 | index 0000000000..04915427c8 |
95259824 WB |
2471 | --- /dev/null |
2472 | +++ b/vma.c | |
67af0fa4 | 2473 | @@ -0,0 +1,757 @@ |
95259824 WB |
2474 | +/* |
2475 | + * VMA: Virtual Machine Archive | |
2476 | + * | |
2477 | + * Copyright (C) 2012-2013 Proxmox Server Solutions | |
2478 | + * | |
2479 | + * Authors: | |
2480 | + * Dietmar Maurer (dietmar@proxmox.com) | |
2481 | + * | |
2482 | + * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
2483 | + * See the COPYING file in the top-level directory. | |
2484 | + * | |
2485 | + */ | |
2486 | + | |
2487 | +#include "qemu/osdep.h" | |
2488 | +#include <glib.h> | |
2489 | + | |
2490 | +#include "vma.h" | |
2491 | +#include "qemu-common.h" | |
2492 | +#include "qemu/error-report.h" | |
2493 | +#include "qemu/main-loop.h" | |
a544966d | 2494 | +#include "qapi/qmp/qstring.h" |
95259824 | 2495 | +#include "sysemu/char.h" /* qstring_from_str */ |
67af0fa4 | 2496 | +#include "sysemu/block-backend.h" |
95259824 WB |
2497 | + |
2498 | +static void help(void) | |
2499 | +{ | |
2500 | + const char *help_msg = | |
2501 | + "usage: vma command [command options]\n" | |
2502 | + "\n" | |
2503 | + "vma list <filename>\n" | |
67af0fa4 WB |
2504 | + "vma config <filename> [-c config]\n" |
2505 | + "vma create <filename> [-c config] pathname ...\n" | |
95259824 | 2506 | + "vma extract <filename> [-r <fifo>] <targetdir>\n" |
67af0fa4 | 2507 | + "vma verify <filename> [-v]\n" |
95259824 WB |
2508 | + ; |
2509 | + | |
2510 | + printf("%s", help_msg); | |
2511 | + exit(1); | |
2512 | +} | |
2513 | + | |
2514 | +static const char *extract_devname(const char *path, char **devname, int index) | |
2515 | +{ | |
2516 | + assert(path); | |
2517 | + | |
2518 | + const char *sep = strchr(path, '='); | |
2519 | + | |
2520 | + if (sep) { | |
2521 | + *devname = g_strndup(path, sep - path); | |
2522 | + path = sep + 1; | |
2523 | + } else { | |
2524 | + if (index >= 0) { | |
2525 | + *devname = g_strdup_printf("disk%d", index); | |
2526 | + } else { | |
2527 | + *devname = NULL; | |
2528 | + } | |
2529 | + } | |
2530 | + | |
2531 | + return path; | |
2532 | +} | |
2533 | + | |
2534 | +static void print_content(VmaReader *vmar) | |
2535 | +{ | |
2536 | + assert(vmar); | |
2537 | + | |
2538 | + VmaHeader *head = vma_reader_get_header(vmar); | |
2539 | + | |
2540 | + GList *l = vma_reader_get_config_data(vmar); | |
2541 | + while (l && l->data) { | |
2542 | + VmaConfigData *cdata = (VmaConfigData *)l->data; | |
2543 | + l = g_list_next(l); | |
2544 | + printf("CFG: size: %d name: %s\n", cdata->len, cdata->name); | |
2545 | + } | |
2546 | + | |
2547 | + int i; | |
2548 | + VmaDeviceInfo *di; | |
2549 | + for (i = 1; i < 255; i++) { | |
2550 | + di = vma_reader_get_device_info(vmar, i); | |
2551 | + if (di) { | |
2552 | + if (strcmp(di->devname, "vmstate") == 0) { | |
2553 | + printf("VMSTATE: dev_id=%d memory: %zd\n", i, di->size); | |
2554 | + } else { | |
2555 | + printf("DEV: dev_id=%d size: %zd devname: %s\n", | |
2556 | + i, di->size, di->devname); | |
2557 | + } | |
2558 | + } | |
2559 | + } | |
2560 | + /* ctime is the last entry we print */ | |
2561 | + printf("CTIME: %s", ctime(&head->ctime)); | |
2562 | + fflush(stdout); | |
2563 | +} | |
2564 | + | |
2565 | +static int list_content(int argc, char **argv) | |
2566 | +{ | |
2567 | + int c, ret = 0; | |
2568 | + const char *filename; | |
2569 | + | |
2570 | + for (;;) { | |
2571 | + c = getopt(argc, argv, "h"); | |
2572 | + if (c == -1) { | |
2573 | + break; | |
2574 | + } | |
2575 | + switch (c) { | |
2576 | + case '?': | |
2577 | + case 'h': | |
2578 | + help(); | |
2579 | + break; | |
2580 | + default: | |
2581 | + g_assert_not_reached(); | |
2582 | + } | |
2583 | + } | |
2584 | + | |
2585 | + /* Get the filename */ | |
2586 | + if ((optind + 1) != argc) { | |
2587 | + help(); | |
2588 | + } | |
2589 | + filename = argv[optind++]; | |
2590 | + | |
2591 | + Error *errp = NULL; | |
2592 | + VmaReader *vmar = vma_reader_create(filename, &errp); | |
2593 | + | |
2594 | + if (!vmar) { | |
2595 | + g_error("%s", error_get_pretty(errp)); | |
2596 | + } | |
2597 | + | |
2598 | + print_content(vmar); | |
2599 | + | |
2600 | + vma_reader_destroy(vmar); | |
2601 | + | |
2602 | + return ret; | |
2603 | +} | |
2604 | + | |
2605 | +typedef struct RestoreMap { | |
2606 | + char *devname; | |
2607 | + char *path; | |
67af0fa4 | 2608 | + char *format; |
95259824 WB |
2609 | + bool write_zero; |
2610 | +} RestoreMap; | |
2611 | + | |
2612 | +static int extract_content(int argc, char **argv) | |
2613 | +{ | |
2614 | + int c, ret = 0; | |
2615 | + int verbose = 0; | |
2616 | + const char *filename; | |
2617 | + const char *dirname; | |
2618 | + const char *readmap = NULL; | |
2619 | + | |
2620 | + for (;;) { | |
2621 | + c = getopt(argc, argv, "hvr:"); | |
2622 | + if (c == -1) { | |
2623 | + break; | |
2624 | + } | |
2625 | + switch (c) { | |
2626 | + case '?': | |
2627 | + case 'h': | |
2628 | + help(); | |
2629 | + break; | |
2630 | + case 'r': | |
2631 | + readmap = optarg; | |
2632 | + break; | |
2633 | + case 'v': | |
2634 | + verbose = 1; | |
2635 | + break; | |
2636 | + default: | |
2637 | + help(); | |
2638 | + } | |
2639 | + } | |
2640 | + | |
2641 | + /* Get the filename */ | |
2642 | + if ((optind + 2) != argc) { | |
2643 | + help(); | |
2644 | + } | |
2645 | + filename = argv[optind++]; | |
2646 | + dirname = argv[optind++]; | |
2647 | + | |
2648 | + Error *errp = NULL; | |
2649 | + VmaReader *vmar = vma_reader_create(filename, &errp); | |
2650 | + | |
2651 | + if (!vmar) { | |
2652 | + g_error("%s", error_get_pretty(errp)); | |
2653 | + } | |
2654 | + | |
2655 | + if (mkdir(dirname, 0777) < 0) { | |
2656 | + g_error("unable to create target directory %s - %s", | |
2657 | + dirname, g_strerror(errno)); | |
2658 | + } | |
2659 | + | |
2660 | + GList *l = vma_reader_get_config_data(vmar); | |
2661 | + while (l && l->data) { | |
2662 | + VmaConfigData *cdata = (VmaConfigData *)l->data; | |
2663 | + l = g_list_next(l); | |
2664 | + char *cfgfn = g_strdup_printf("%s/%s", dirname, cdata->name); | |
2665 | + GError *err = NULL; | |
2666 | + if (!g_file_set_contents(cfgfn, (gchar *)cdata->data, cdata->len, | |
2667 | + &err)) { | |
2668 | + g_error("unable to write file: %s", err->message); | |
2669 | + } | |
2670 | + } | |
2671 | + | |
2672 | + GHashTable *devmap = g_hash_table_new(g_str_hash, g_str_equal); | |
2673 | + | |
2674 | + if (readmap) { | |
2675 | + print_content(vmar); | |
2676 | + | |
2677 | + FILE *map = fopen(readmap, "r"); | |
2678 | + if (!map) { | |
2679 | + g_error("unable to open fifo %s - %s", readmap, g_strerror(errno)); | |
2680 | + } | |
2681 | + | |
2682 | + while (1) { | |
2683 | + char inbuf[8192]; | |
2684 | + char *line = fgets(inbuf, sizeof(inbuf), map); | |
2685 | + if (!line || line[0] == '\0' || !strcmp(line, "done\n")) { | |
2686 | + break; | |
2687 | + } | |
2688 | + int len = strlen(line); | |
2689 | + if (line[len - 1] == '\n') { | |
2690 | + line[len - 1] = '\0'; | |
2691 | + if (len == 1) { | |
2692 | + break; | |
2693 | + } | |
2694 | + } | |
2695 | + | |
67af0fa4 WB |
2696 | + char *format = NULL; |
2697 | + if (strncmp(line, "format=", sizeof("format=")-1) == 0) { | |
2698 | + format = line + sizeof("format=")-1; | |
2699 | + char *colon = strchr(format, ':'); | |
2700 | + if (!colon) { | |
2701 | + g_error("read map failed - found only a format ('%s')", inbuf); | |
2702 | + } | |
2703 | + format = g_strndup(format, colon - format); | |
2704 | + line = colon+1; | |
2705 | + } | |
2706 | + | |
95259824 WB |
2707 | + const char *path; |
2708 | + bool write_zero; | |
2709 | + if (line[0] == '0' && line[1] == ':') { | |
67af0fa4 | 2710 | + path = line + 2; |
95259824 WB |
2711 | + write_zero = false; |
2712 | + } else if (line[0] == '1' && line[1] == ':') { | |
67af0fa4 | 2713 | + path = line + 2; |
95259824 WB |
2714 | + write_zero = true; |
2715 | + } else { | |
2716 | + g_error("read map failed - parse error ('%s')", inbuf); | |
2717 | + } | |
2718 | + | |
2719 | + char *devname = NULL; | |
2720 | + path = extract_devname(path, &devname, -1); | |
2721 | + if (!devname) { | |
2722 | + g_error("read map failed - no dev name specified ('%s')", | |
2723 | + inbuf); | |
2724 | + } | |
2725 | + | |
2726 | + RestoreMap *map = g_new0(RestoreMap, 1); | |
2727 | + map->devname = g_strdup(devname); | |
2728 | + map->path = g_strdup(path); | |
67af0fa4 | 2729 | + map->format = format; |
95259824 WB |
2730 | + map->write_zero = write_zero; |
2731 | + | |
2732 | + g_hash_table_insert(devmap, map->devname, map); | |
2733 | + | |
2734 | + }; | |
2735 | + } | |
2736 | + | |
2737 | + int i; | |
2738 | + int vmstate_fd = -1; | |
2739 | + guint8 vmstate_stream = 0; | |
2740 | + | |
67af0fa4 WB |
2741 | + BlockBackend *blk = NULL; |
2742 | + | |
95259824 WB |
2743 | + for (i = 1; i < 255; i++) { |
2744 | + VmaDeviceInfo *di = vma_reader_get_device_info(vmar, i); | |
2745 | + if (di && (strcmp(di->devname, "vmstate") == 0)) { | |
2746 | + vmstate_stream = i; | |
2747 | + char *statefn = g_strdup_printf("%s/vmstate.bin", dirname); | |
2748 | + vmstate_fd = open(statefn, O_WRONLY|O_CREAT|O_EXCL, 0644); | |
2749 | + if (vmstate_fd < 0) { | |
2750 | + g_error("create vmstate file '%s' failed - %s", statefn, | |
2751 | + g_strerror(errno)); | |
2752 | + } | |
2753 | + g_free(statefn); | |
2754 | + } else if (di) { | |
2755 | + char *devfn = NULL; | |
67af0fa4 WB |
2756 | + const char *format = NULL; |
2757 | + int flags = BDRV_O_RDWR | BDRV_O_NO_FLUSH; | |
95259824 WB |
2758 | + bool write_zero = true; |
2759 | + | |
2760 | + if (readmap) { | |
2761 | + RestoreMap *map; | |
2762 | + map = (RestoreMap *)g_hash_table_lookup(devmap, di->devname); | |
2763 | + if (map == NULL) { | |
2764 | + g_error("no device name mapping for %s", di->devname); | |
2765 | + } | |
2766 | + devfn = map->path; | |
67af0fa4 | 2767 | + format = map->format; |
95259824 WB |
2768 | + write_zero = map->write_zero; |
2769 | + } else { | |
2770 | + devfn = g_strdup_printf("%s/tmp-disk-%s.raw", | |
2771 | + dirname, di->devname); | |
2772 | + printf("DEVINFO %s %zd\n", devfn, di->size); | |
2773 | + | |
2774 | + bdrv_img_create(devfn, "raw", NULL, NULL, NULL, di->size, | |
2775 | + flags, &errp, 0); | |
2776 | + if (errp) { | |
2777 | + g_error("can't create file %s: %s", devfn, | |
2778 | + error_get_pretty(errp)); | |
2779 | + } | |
2780 | + | |
2781 | + /* Note: we created an empty file above, so there is no | |
2782 | + * need to write zeroes (so we generate a sparse file) | |
2783 | + */ | |
2784 | + write_zero = false; | |
2785 | + } | |
2786 | + | |
67af0fa4 WB |
2787 | + size_t devlen = strlen(devfn); |
2788 | + QDict *options = NULL; | |
2789 | + if (format) { | |
2790 | + /* explicit format from commandline */ | |
2791 | + options = qdict_new(); | |
2792 | + qdict_put(options, "driver", qstring_from_str(format)); | |
2793 | + } else if ((devlen > 4 && strcmp(devfn+devlen-4, ".raw") == 0) || | |
2794 | + strncmp(devfn, "/dev/", 5) == 0) | |
2795 | + { | |
2796 | + /* This part is now deprecated for PVE as well (just as qemu | |
2797 | + * deprecated not specifying an explicit raw format, too. | |
2798 | + */ | |
2799 | + /* explicit raw format */ | |
2800 | + options = qdict_new(); | |
2801 | + qdict_put(options, "driver", qstring_from_str("raw")); | |
2802 | + } | |
2803 | + | |
2804 | + | |
2805 | + if (errp || !(blk = blk_new_open(devfn, NULL, options, flags, &errp))) { | |
95259824 WB |
2806 | + g_error("can't open file %s - %s", devfn, |
2807 | + error_get_pretty(errp)); | |
2808 | + } | |
67af0fa4 WB |
2809 | + |
2810 | + if (vma_reader_register_bs(vmar, i, blk, write_zero, &errp) < 0) { | |
95259824 WB |
2811 | + g_error("%s", error_get_pretty(errp)); |
2812 | + } | |
2813 | + | |
2814 | + if (!readmap) { | |
2815 | + g_free(devfn); | |
2816 | + } | |
2817 | + } | |
2818 | + } | |
2819 | + | |
2820 | + if (vma_reader_restore(vmar, vmstate_fd, verbose, &errp) < 0) { | |
2821 | + g_error("restore failed - %s", error_get_pretty(errp)); | |
2822 | + } | |
2823 | + | |
2824 | + if (!readmap) { | |
2825 | + for (i = 1; i < 255; i++) { | |
2826 | + VmaDeviceInfo *di = vma_reader_get_device_info(vmar, i); | |
2827 | + if (di && (i != vmstate_stream)) { | |
2828 | + char *tmpfn = g_strdup_printf("%s/tmp-disk-%s.raw", | |
2829 | + dirname, di->devname); | |
2830 | + char *fn = g_strdup_printf("%s/disk-%s.raw", | |
2831 | + dirname, di->devname); | |
2832 | + if (rename(tmpfn, fn) != 0) { | |
2833 | + g_error("rename %s to %s failed - %s", | |
2834 | + tmpfn, fn, g_strerror(errno)); | |
2835 | + } | |
2836 | + } | |
2837 | + } | |
2838 | + } | |
2839 | + | |
2840 | + vma_reader_destroy(vmar); | |
2841 | + | |
67af0fa4 WB |
2842 | + blk_unref(blk); |
2843 | + | |
2844 | + bdrv_close_all(); | |
2845 | + | |
2846 | + return ret; | |
2847 | +} | |
2848 | + | |
2849 | +static int verify_content(int argc, char **argv) | |
2850 | +{ | |
2851 | + int c, ret = 0; | |
2852 | + int verbose = 0; | |
2853 | + const char *filename; | |
2854 | + | |
2855 | + for (;;) { | |
2856 | + c = getopt(argc, argv, "hv"); | |
2857 | + if (c == -1) { | |
2858 | + break; | |
2859 | + } | |
2860 | + switch (c) { | |
2861 | + case '?': | |
2862 | + case 'h': | |
2863 | + help(); | |
2864 | + break; | |
2865 | + case 'v': | |
2866 | + verbose = 1; | |
2867 | + break; | |
2868 | + default: | |
2869 | + help(); | |
2870 | + } | |
2871 | + } | |
2872 | + | |
2873 | + /* Get the filename */ | |
2874 | + if ((optind + 1) != argc) { | |
2875 | + help(); | |
2876 | + } | |
2877 | + filename = argv[optind++]; | |
2878 | + | |
2879 | + Error *errp = NULL; | |
2880 | + VmaReader *vmar = vma_reader_create(filename, &errp); | |
2881 | + | |
2882 | + if (!vmar) { | |
2883 | + g_error("%s", error_get_pretty(errp)); | |
2884 | + } | |
2885 | + | |
2886 | + if (verbose) { | |
2887 | + print_content(vmar); | |
2888 | + } | |
2889 | + | |
2890 | + if (vma_reader_verify(vmar, verbose, &errp) < 0) { | |
2891 | + g_error("verify failed - %s", error_get_pretty(errp)); | |
2892 | + } | |
2893 | + | |
2894 | + vma_reader_destroy(vmar); | |
2895 | + | |
95259824 WB |
2896 | + bdrv_close_all(); |
2897 | + | |
2898 | + return ret; | |
2899 | +} | |
2900 | + | |
2901 | +typedef struct BackupJob { | |
67af0fa4 | 2902 | + BlockBackend *target; |
95259824 WB |
2903 | + int64_t len; |
2904 | + VmaWriter *vmaw; | |
2905 | + uint8_t dev_id; | |
2906 | +} BackupJob; | |
2907 | + | |
2908 | +#define BACKUP_SECTORS_PER_CLUSTER (VMA_CLUSTER_SIZE / BDRV_SECTOR_SIZE) | |
2909 | + | |
67af0fa4 WB |
2910 | +static void coroutine_fn backup_run_empty(void *opaque) |
2911 | +{ | |
2912 | + VmaWriter *vmaw = (VmaWriter *)opaque; | |
2913 | + | |
2914 | + vma_writer_flush_output(vmaw); | |
2915 | + | |
2916 | + Error *err = NULL; | |
2917 | + if (vma_writer_close(vmaw, &err) != 0) { | |
2918 | + g_warning("vma_writer_close failed %s", error_get_pretty(err)); | |
2919 | + } | |
2920 | +} | |
2921 | + | |
95259824 WB |
2922 | +static void coroutine_fn backup_run(void *opaque) |
2923 | +{ | |
2924 | + BackupJob *job = (BackupJob *)opaque; | |
2925 | + struct iovec iov; | |
2926 | + QEMUIOVector qiov; | |
2927 | + | |
2928 | + int64_t start, end; | |
2929 | + int ret = 0; | |
2930 | + | |
67af0fa4 | 2931 | + unsigned char *buf = blk_blockalign(job->target, VMA_CLUSTER_SIZE); |
95259824 WB |
2932 | + |
2933 | + start = 0; | |
2934 | + end = DIV_ROUND_UP(job->len / BDRV_SECTOR_SIZE, | |
2935 | + BACKUP_SECTORS_PER_CLUSTER); | |
2936 | + | |
2937 | + for (; start < end; start++) { | |
2938 | + iov.iov_base = buf; | |
2939 | + iov.iov_len = VMA_CLUSTER_SIZE; | |
2940 | + qemu_iovec_init_external(&qiov, &iov, 1); | |
2941 | + | |
67af0fa4 WB |
2942 | + ret = blk_co_preadv(job->target, start * VMA_CLUSTER_SIZE, |
2943 | + VMA_CLUSTER_SIZE, &qiov, 0); | |
95259824 WB |
2944 | + if (ret < 0) { |
2945 | + vma_writer_set_error(job->vmaw, "read error", -1); | |
2946 | + goto out; | |
2947 | + } | |
2948 | + | |
2949 | + size_t zb = 0; | |
2950 | + if (vma_writer_write(job->vmaw, job->dev_id, start, buf, &zb) < 0) { | |
2951 | + vma_writer_set_error(job->vmaw, "backup_dump_cb vma_writer_write failed", -1); | |
2952 | + goto out; | |
2953 | + } | |
2954 | + } | |
2955 | + | |
2956 | + | |
2957 | +out: | |
2958 | + if (vma_writer_close_stream(job->vmaw, job->dev_id) <= 0) { | |
2959 | + Error *err = NULL; | |
2960 | + if (vma_writer_close(job->vmaw, &err) != 0) { | |
2961 | + g_warning("vma_writer_close failed %s", error_get_pretty(err)); | |
2962 | + } | |
2963 | + } | |
2964 | +} | |
2965 | + | |
2966 | +static int create_archive(int argc, char **argv) | |
2967 | +{ | |
2968 | + int i, c; | |
2969 | + int verbose = 0; | |
2970 | + const char *archivename; | |
2971 | + GList *config_files = NULL; | |
2972 | + | |
2973 | + for (;;) { | |
2974 | + c = getopt(argc, argv, "hvc:"); | |
2975 | + if (c == -1) { | |
2976 | + break; | |
2977 | + } | |
2978 | + switch (c) { | |
2979 | + case '?': | |
2980 | + case 'h': | |
2981 | + help(); | |
2982 | + break; | |
2983 | + case 'c': | |
2984 | + config_files = g_list_append(config_files, optarg); | |
2985 | + break; | |
2986 | + case 'v': | |
2987 | + verbose = 1; | |
2988 | + break; | |
2989 | + default: | |
2990 | + g_assert_not_reached(); | |
2991 | + } | |
2992 | + } | |
2993 | + | |
2994 | + | |
67af0fa4 WB |
2995 | + /* make sure we an archive name */ |
2996 | + if ((optind + 1) > argc) { | |
95259824 WB |
2997 | + help(); |
2998 | + } | |
2999 | + | |
3000 | + archivename = argv[optind++]; | |
3001 | + | |
3002 | + uuid_t uuid; | |
3003 | + uuid_generate(uuid); | |
3004 | + | |
3005 | + Error *local_err = NULL; | |
3006 | + VmaWriter *vmaw = vma_writer_create(archivename, uuid, &local_err); | |
3007 | + | |
3008 | + if (vmaw == NULL) { | |
3009 | + g_error("%s", error_get_pretty(local_err)); | |
3010 | + } | |
3011 | + | |
3012 | + GList *l = config_files; | |
3013 | + while (l && l->data) { | |
3014 | + char *name = l->data; | |
3015 | + char *cdata = NULL; | |
3016 | + gsize clen = 0; | |
3017 | + GError *err = NULL; | |
3018 | + if (!g_file_get_contents(name, &cdata, &clen, &err)) { | |
3019 | + unlink(archivename); | |
3020 | + g_error("Unable to read file: %s", err->message); | |
3021 | + } | |
3022 | + | |
3023 | + if (vma_writer_add_config(vmaw, name, cdata, clen) != 0) { | |
3024 | + unlink(archivename); | |
3025 | + g_error("Unable to append config data %s (len = %zd)", | |
3026 | + name, clen); | |
3027 | + } | |
3028 | + l = g_list_next(l); | |
3029 | + } | |
3030 | + | |
67af0fa4 | 3031 | + int devcount = 0; |
95259824 WB |
3032 | + while (optind < argc) { |
3033 | + const char *path = argv[optind++]; | |
3034 | + char *devname = NULL; | |
67af0fa4 | 3035 | + path = extract_devname(path, &devname, devcount++); |
95259824 WB |
3036 | + |
3037 | + Error *errp = NULL; | |
67af0fa4 | 3038 | + BlockBackend *target; |
95259824 | 3039 | + |
67af0fa4 WB |
3040 | + target = blk_new_open(path, NULL, NULL, 0, &errp); |
3041 | + if (!target) { | |
95259824 WB |
3042 | + unlink(archivename); |
3043 | + g_error("bdrv_open '%s' failed - %s", path, error_get_pretty(errp)); | |
3044 | + } | |
67af0fa4 | 3045 | + int64_t size = blk_getlength(target); |
95259824 WB |
3046 | + int dev_id = vma_writer_register_stream(vmaw, devname, size); |
3047 | + if (dev_id <= 0) { | |
3048 | + unlink(archivename); | |
3049 | + g_error("vma_writer_register_stream '%s' failed", devname); | |
3050 | + } | |
3051 | + | |
3052 | + BackupJob *job = g_new0(BackupJob, 1); | |
3053 | + job->len = size; | |
67af0fa4 | 3054 | + job->target = target; |
95259824 WB |
3055 | + job->vmaw = vmaw; |
3056 | + job->dev_id = dev_id; | |
3057 | + | |
3058 | + Coroutine *co = qemu_coroutine_create(backup_run, job); | |
3059 | + qemu_coroutine_enter(co); | |
3060 | + } | |
3061 | + | |
3062 | + VmaStatus vmastat; | |
3063 | + int percent = 0; | |
3064 | + int last_percent = -1; | |
3065 | + | |
67af0fa4 WB |
3066 | + if (devcount) { |
3067 | + while (1) { | |
3068 | + main_loop_wait(false); | |
3069 | + vma_writer_get_status(vmaw, &vmastat); | |
95259824 | 3070 | + |
67af0fa4 | 3071 | + if (verbose) { |
95259824 | 3072 | + |
67af0fa4 WB |
3073 | + uint64_t total = 0; |
3074 | + uint64_t transferred = 0; | |
3075 | + uint64_t zero_bytes = 0; | |
95259824 | 3076 | + |
67af0fa4 WB |
3077 | + int i; |
3078 | + for (i = 0; i < 256; i++) { | |
3079 | + if (vmastat.stream_info[i].size) { | |
3080 | + total += vmastat.stream_info[i].size; | |
3081 | + transferred += vmastat.stream_info[i].transferred; | |
3082 | + zero_bytes += vmastat.stream_info[i].zero_bytes; | |
3083 | + } | |
95259824 | 3084 | + } |
67af0fa4 WB |
3085 | + percent = (transferred*100)/total; |
3086 | + if (percent != last_percent) { | |
3087 | + fprintf(stderr, "progress %d%% %zd/%zd %zd\n", percent, | |
3088 | + transferred, total, zero_bytes); | |
3089 | + fflush(stderr); | |
95259824 | 3090 | + |
67af0fa4 WB |
3091 | + last_percent = percent; |
3092 | + } | |
95259824 | 3093 | + } |
95259824 | 3094 | + |
67af0fa4 WB |
3095 | + if (vmastat.closed) { |
3096 | + break; | |
3097 | + } | |
95259824 WB |
3098 | + } |
3099 | + } else { | |
3100 | + Coroutine *co = qemu_coroutine_create(backup_run_empty, vmaw); | |
3101 | + qemu_coroutine_enter(co); | |
3102 | + while (1) { | |
3103 | + main_loop_wait(false); | |
3104 | + vma_writer_get_status(vmaw, &vmastat); | |
3105 | + if (vmastat.closed) { | |
3106 | + break; | |
3107 | + } | |
3108 | + } | |
3109 | + } | |
3110 | + | |
3111 | + bdrv_drain_all(); | |
3112 | + | |
3113 | + vma_writer_get_status(vmaw, &vmastat); | |
3114 | + | |
3115 | + if (verbose) { | |
3116 | + for (i = 0; i < 256; i++) { | |
3117 | + VmaStreamInfo *si = &vmastat.stream_info[i]; | |
3118 | + if (si->size) { | |
3119 | + fprintf(stderr, "image %s: size=%zd zeros=%zd saved=%zd\n", | |
3120 | + si->devname, si->size, si->zero_bytes, | |
3121 | + si->size - si->zero_bytes); | |
3122 | + } | |
3123 | + } | |
3124 | + } | |
3125 | + | |
3126 | + if (vmastat.status < 0) { | |
3127 | + unlink(archivename); | |
3128 | + g_error("creating vma archive failed"); | |
3129 | + } | |
3130 | + | |
3131 | + return 0; | |
3132 | +} | |
3133 | + | |
67af0fa4 WB |
3134 | +static int dump_config(int argc, char **argv) |
3135 | +{ | |
3136 | + int c, ret = 0; | |
3137 | + const char *filename; | |
3138 | + const char *config_name = "qemu-server.conf"; | |
3139 | + | |
3140 | + for (;;) { | |
3141 | + c = getopt(argc, argv, "hc:"); | |
3142 | + if (c == -1) { | |
3143 | + break; | |
3144 | + } | |
3145 | + switch (c) { | |
3146 | + case '?': | |
3147 | + case 'h': | |
3148 | + help(); | |
3149 | + break; | |
3150 | + case 'c': | |
3151 | + config_name = optarg; | |
3152 | + break; | |
3153 | + default: | |
3154 | + help(); | |
3155 | + } | |
3156 | + } | |
3157 | + | |
3158 | + /* Get the filename */ | |
3159 | + if ((optind + 1) != argc) { | |
3160 | + help(); | |
3161 | + } | |
3162 | + filename = argv[optind++]; | |
3163 | + | |
3164 | + Error *errp = NULL; | |
3165 | + VmaReader *vmar = vma_reader_create(filename, &errp); | |
3166 | + | |
3167 | + if (!vmar) { | |
3168 | + g_error("%s", error_get_pretty(errp)); | |
3169 | + } | |
3170 | + | |
3171 | + int found = 0; | |
3172 | + GList *l = vma_reader_get_config_data(vmar); | |
3173 | + while (l && l->data) { | |
3174 | + VmaConfigData *cdata = (VmaConfigData *)l->data; | |
3175 | + l = g_list_next(l); | |
3176 | + if (strcmp(cdata->name, config_name) == 0) { | |
3177 | + found = 1; | |
3178 | + fwrite(cdata->data, cdata->len, 1, stdout); | |
3179 | + break; | |
3180 | + } | |
3181 | + } | |
3182 | + | |
3183 | + vma_reader_destroy(vmar); | |
3184 | + | |
3185 | + bdrv_close_all(); | |
3186 | + | |
3187 | + if (!found) { | |
3188 | + fprintf(stderr, "unable to find configuration data '%s'\n", config_name); | |
3189 | + return -1; | |
3190 | + } | |
3191 | + | |
3192 | + return ret; | |
3193 | +} | |
3194 | + | |
95259824 WB |
3195 | +int main(int argc, char **argv) |
3196 | +{ | |
3197 | + const char *cmdname; | |
3198 | + Error *main_loop_err = NULL; | |
3199 | + | |
3200 | + error_set_progname(argv[0]); | |
3201 | + | |
3202 | + if (qemu_init_main_loop(&main_loop_err)) { | |
3203 | + g_error("%s", error_get_pretty(main_loop_err)); | |
3204 | + } | |
3205 | + | |
3206 | + bdrv_init(); | |
3207 | + | |
3208 | + if (argc < 2) { | |
3209 | + help(); | |
3210 | + } | |
3211 | + | |
3212 | + cmdname = argv[1]; | |
3213 | + argc--; argv++; | |
3214 | + | |
3215 | + | |
3216 | + if (!strcmp(cmdname, "list")) { | |
3217 | + return list_content(argc, argv); | |
3218 | + } else if (!strcmp(cmdname, "create")) { | |
3219 | + return create_archive(argc, argv); | |
3220 | + } else if (!strcmp(cmdname, "extract")) { | |
3221 | + return extract_content(argc, argv); | |
67af0fa4 WB |
3222 | + } else if (!strcmp(cmdname, "verify")) { |
3223 | + return verify_content(argc, argv); | |
3224 | + } else if (!strcmp(cmdname, "config")) { | |
3225 | + return dump_config(argc, argv); | |
95259824 WB |
3226 | + } |
3227 | + | |
3228 | + help(); | |
3229 | + return 0; | |
3230 | +} | |
3231 | diff --git a/vma.h b/vma.h | |
3232 | new file mode 100644 | |
67af0fa4 | 3233 | index 0000000000..fa6f4df7e7 |
95259824 WB |
3234 | --- /dev/null |
3235 | +++ b/vma.h | |
67af0fa4 | 3236 | @@ -0,0 +1,149 @@ |
95259824 WB |
3237 | +/* |
3238 | + * VMA: Virtual Machine Archive | |
3239 | + * | |
3240 | + * Copyright (C) Proxmox Server Solutions | |
3241 | + * | |
3242 | + * Authors: | |
3243 | + * Dietmar Maurer (dietmar@proxmox.com) | |
3244 | + * | |
3245 | + * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
3246 | + * See the COPYING file in the top-level directory. | |
3247 | + * | |
3248 | + */ | |
3249 | + | |
3250 | +#ifndef BACKUP_VMA_H | |
3251 | +#define BACKUP_VMA_H | |
3252 | + | |
3253 | +#include <uuid/uuid.h> | |
3254 | +#include "qapi/error.h" | |
3255 | +#include "block/block.h" | |
3256 | + | |
3257 | +#define VMA_BLOCK_BITS 12 | |
3258 | +#define VMA_BLOCK_SIZE (1<<VMA_BLOCK_BITS) | |
3259 | +#define VMA_CLUSTER_BITS (VMA_BLOCK_BITS+4) | |
3260 | +#define VMA_CLUSTER_SIZE (1<<VMA_CLUSTER_BITS) | |
3261 | + | |
3262 | +#if VMA_CLUSTER_SIZE != 65536 | |
3263 | +#error unexpected cluster size | |
3264 | +#endif | |
3265 | + | |
3266 | +#define VMA_EXTENT_HEADER_SIZE 512 | |
3267 | +#define VMA_BLOCKS_PER_EXTENT 59 | |
3268 | +#define VMA_MAX_CONFIGS 256 | |
3269 | + | |
3270 | +#define VMA_MAX_EXTENT_SIZE \ | |
3271 | + (VMA_EXTENT_HEADER_SIZE+VMA_CLUSTER_SIZE*VMA_BLOCKS_PER_EXTENT) | |
3272 | +#if VMA_MAX_EXTENT_SIZE != 3867136 | |
3273 | +#error unexpected VMA_EXTENT_SIZE | |
3274 | +#endif | |
3275 | + | |
3276 | +/* File Format Definitions */ | |
3277 | + | |
3278 | +#define VMA_MAGIC (GUINT32_TO_BE(('V'<<24)|('M'<<16)|('A'<<8)|0x00)) | |
3279 | +#define VMA_EXTENT_MAGIC (GUINT32_TO_BE(('V'<<24)|('M'<<16)|('A'<<8)|'E')) | |
3280 | + | |
3281 | +typedef struct VmaDeviceInfoHeader { | |
3282 | + uint32_t devname_ptr; /* offset into blob_buffer table */ | |
3283 | + uint32_t reserved0; | |
3284 | + uint64_t size; /* device size in bytes */ | |
3285 | + uint64_t reserved1; | |
3286 | + uint64_t reserved2; | |
3287 | +} VmaDeviceInfoHeader; | |
3288 | + | |
3289 | +typedef struct VmaHeader { | |
3290 | + uint32_t magic; | |
3291 | + uint32_t version; | |
3292 | + unsigned char uuid[16]; | |
3293 | + int64_t ctime; | |
3294 | + unsigned char md5sum[16]; | |
3295 | + | |
3296 | + uint32_t blob_buffer_offset; | |
3297 | + uint32_t blob_buffer_size; | |
3298 | + uint32_t header_size; | |
3299 | + | |
3300 | + unsigned char reserved[1984]; | |
3301 | + | |
3302 | + uint32_t config_names[VMA_MAX_CONFIGS]; /* offset into blob_buffer table */ | |
3303 | + uint32_t config_data[VMA_MAX_CONFIGS]; /* offset into blob_buffer table */ | |
3304 | + | |
3305 | + uint32_t reserved1; | |
3306 | + | |
3307 | + VmaDeviceInfoHeader dev_info[256]; | |
3308 | +} VmaHeader; | |
3309 | + | |
3310 | +typedef struct VmaExtentHeader { | |
3311 | + uint32_t magic; | |
3312 | + uint16_t reserved1; | |
3313 | + uint16_t block_count; | |
3314 | + unsigned char uuid[16]; | |
3315 | + unsigned char md5sum[16]; | |
3316 | + uint64_t blockinfo[VMA_BLOCKS_PER_EXTENT]; | |
3317 | +} VmaExtentHeader; | |
3318 | + | |
3319 | +/* functions/definitions to read/write vma files */ | |
3320 | + | |
3321 | +typedef struct VmaReader VmaReader; | |
3322 | + | |
3323 | +typedef struct VmaWriter VmaWriter; | |
3324 | + | |
3325 | +typedef struct VmaConfigData { | |
3326 | + const char *name; | |
3327 | + const void *data; | |
3328 | + uint32_t len; | |
3329 | +} VmaConfigData; | |
3330 | + | |
3331 | +typedef struct VmaStreamInfo { | |
3332 | + uint64_t size; | |
3333 | + uint64_t cluster_count; | |
3334 | + uint64_t transferred; | |
3335 | + uint64_t zero_bytes; | |
3336 | + int finished; | |
3337 | + char *devname; | |
3338 | +} VmaStreamInfo; | |
3339 | + | |
3340 | +typedef struct VmaStatus { | |
3341 | + int status; | |
3342 | + bool closed; | |
3343 | + char errmsg[8192]; | |
3344 | + char uuid_str[37]; | |
3345 | + VmaStreamInfo stream_info[256]; | |
3346 | +} VmaStatus; | |
3347 | + | |
3348 | +typedef struct VmaDeviceInfo { | |
3349 | + uint64_t size; /* device size in bytes */ | |
3350 | + const char *devname; | |
3351 | +} VmaDeviceInfo; | |
3352 | + | |
3353 | +VmaWriter *vma_writer_create(const char *filename, uuid_t uuid, Error **errp); | |
3354 | +int vma_writer_close(VmaWriter *vmaw, Error **errp); | |
67af0fa4 | 3355 | +void vma_writer_error_propagate(VmaWriter *vmaw, Error **errp); |
95259824 WB |
3356 | +void vma_writer_destroy(VmaWriter *vmaw); |
3357 | +int vma_writer_add_config(VmaWriter *vmaw, const char *name, gpointer data, | |
3358 | + size_t len); | |
3359 | +int vma_writer_register_stream(VmaWriter *vmaw, const char *devname, | |
3360 | + size_t size); | |
3361 | + | |
3362 | +int64_t coroutine_fn vma_writer_write(VmaWriter *vmaw, uint8_t dev_id, | |
3363 | + int64_t cluster_num, unsigned char *buf, | |
3364 | + size_t *zero_bytes); | |
3365 | + | |
3366 | +int coroutine_fn vma_writer_close_stream(VmaWriter *vmaw, uint8_t dev_id); | |
67af0fa4 | 3367 | +int coroutine_fn vma_writer_flush_output(VmaWriter *vmaw); |
95259824 WB |
3368 | + |
3369 | +int vma_writer_get_status(VmaWriter *vmaw, VmaStatus *status); | |
3370 | +void vma_writer_set_error(VmaWriter *vmaw, const char *fmt, ...); | |
3371 | + | |
3372 | + | |
3373 | +VmaReader *vma_reader_create(const char *filename, Error **errp); | |
3374 | +void vma_reader_destroy(VmaReader *vmar); | |
3375 | +VmaHeader *vma_reader_get_header(VmaReader *vmar); | |
3376 | +GList *vma_reader_get_config_data(VmaReader *vmar); | |
3377 | +VmaDeviceInfo *vma_reader_get_device_info(VmaReader *vmar, guint8 dev_id); | |
3378 | +int vma_reader_register_bs(VmaReader *vmar, guint8 dev_id, | |
67af0fa4 | 3379 | + BlockBackend *target, bool write_zeroes, |
95259824 WB |
3380 | + Error **errp); |
3381 | +int vma_reader_restore(VmaReader *vmar, int vmstate_fd, bool verbose, | |
3382 | + Error **errp); | |
67af0fa4 | 3383 | +int vma_reader_verify(VmaReader *vmar, bool verbose, Error **errp); |
95259824 WB |
3384 | + |
3385 | +#endif /* BACKUP_VMA_H */ | |
3386 | -- | |
45169293 | 3387 | 2.11.0 |
95259824 | 3388 |