root / block / blkverify.c @ 363c3c85
History | View | Annotate | Download (10.5 kB)
1 | d9d33417 | Stefan Hajnoczi | /*
|
---|---|---|---|
2 | d9d33417 | Stefan Hajnoczi | * Block protocol for block driver correctness testing
|
3 | d9d33417 | Stefan Hajnoczi | *
|
4 | d9d33417 | Stefan Hajnoczi | * Copyright (C) 2010 IBM, Corp.
|
5 | d9d33417 | Stefan Hajnoczi | *
|
6 | d9d33417 | Stefan Hajnoczi | * This work is licensed under the terms of the GNU GPL, version 2 or later.
|
7 | d9d33417 | Stefan Hajnoczi | * See the COPYING file in the top-level directory.
|
8 | d9d33417 | Stefan Hajnoczi | */
|
9 | d9d33417 | Stefan Hajnoczi | |
10 | d9d33417 | Stefan Hajnoczi | #include <stdarg.h> |
11 | d9d33417 | Stefan Hajnoczi | #include "qemu_socket.h" /* for EINPROGRESS on Windows */ |
12 | d9d33417 | Stefan Hajnoczi | #include "block_int.h" |
13 | d9d33417 | Stefan Hajnoczi | |
14 | d9d33417 | Stefan Hajnoczi | typedef struct { |
15 | d9d33417 | Stefan Hajnoczi | BlockDriverState *test_file; |
16 | d9d33417 | Stefan Hajnoczi | } BDRVBlkverifyState; |
17 | d9d33417 | Stefan Hajnoczi | |
18 | d9d33417 | Stefan Hajnoczi | typedef struct BlkverifyAIOCB BlkverifyAIOCB; |
19 | d9d33417 | Stefan Hajnoczi | struct BlkverifyAIOCB {
|
20 | d9d33417 | Stefan Hajnoczi | BlockDriverAIOCB common; |
21 | d9d33417 | Stefan Hajnoczi | QEMUBH *bh; |
22 | d9d33417 | Stefan Hajnoczi | |
23 | d9d33417 | Stefan Hajnoczi | /* Request metadata */
|
24 | d9d33417 | Stefan Hajnoczi | bool is_write;
|
25 | d9d33417 | Stefan Hajnoczi | int64_t sector_num; |
26 | d9d33417 | Stefan Hajnoczi | int nb_sectors;
|
27 | d9d33417 | Stefan Hajnoczi | |
28 | d9d33417 | Stefan Hajnoczi | int ret; /* first completed request's result */ |
29 | d9d33417 | Stefan Hajnoczi | unsigned int done; /* completion counter */ |
30 | d9d33417 | Stefan Hajnoczi | bool *finished; /* completion signal for cancel */ |
31 | d9d33417 | Stefan Hajnoczi | |
32 | d9d33417 | Stefan Hajnoczi | QEMUIOVector *qiov; /* user I/O vector */
|
33 | d9d33417 | Stefan Hajnoczi | QEMUIOVector raw_qiov; /* cloned I/O vector for raw file */
|
34 | d9d33417 | Stefan Hajnoczi | void *buf; /* buffer for raw file I/O */ |
35 | d9d33417 | Stefan Hajnoczi | |
36 | d9d33417 | Stefan Hajnoczi | void (*verify)(BlkverifyAIOCB *acb);
|
37 | d9d33417 | Stefan Hajnoczi | }; |
38 | d9d33417 | Stefan Hajnoczi | |
39 | d9d33417 | Stefan Hajnoczi | static void blkverify_aio_cancel(BlockDriverAIOCB *blockacb) |
40 | d9d33417 | Stefan Hajnoczi | { |
41 | d9d33417 | Stefan Hajnoczi | BlkverifyAIOCB *acb = (BlkverifyAIOCB *)blockacb; |
42 | d9d33417 | Stefan Hajnoczi | bool finished = false; |
43 | d9d33417 | Stefan Hajnoczi | |
44 | d9d33417 | Stefan Hajnoczi | /* Wait until request completes, invokes its callback, and frees itself */
|
45 | d9d33417 | Stefan Hajnoczi | acb->finished = &finished; |
46 | d9d33417 | Stefan Hajnoczi | while (!finished) {
|
47 | d9d33417 | Stefan Hajnoczi | qemu_aio_wait(); |
48 | d9d33417 | Stefan Hajnoczi | } |
49 | d9d33417 | Stefan Hajnoczi | } |
50 | d9d33417 | Stefan Hajnoczi | |
51 | d9d33417 | Stefan Hajnoczi | static AIOPool blkverify_aio_pool = {
|
52 | d9d33417 | Stefan Hajnoczi | .aiocb_size = sizeof(BlkverifyAIOCB),
|
53 | d9d33417 | Stefan Hajnoczi | .cancel = blkverify_aio_cancel, |
54 | d9d33417 | Stefan Hajnoczi | }; |
55 | d9d33417 | Stefan Hajnoczi | |
56 | a77cffe7 | Stefan Weil | static void GCC_FMT_ATTR(2, 3) blkverify_err(BlkverifyAIOCB *acb, |
57 | a77cffe7 | Stefan Weil | const char *fmt, ...) |
58 | d9d33417 | Stefan Hajnoczi | { |
59 | d9d33417 | Stefan Hajnoczi | va_list ap; |
60 | d9d33417 | Stefan Hajnoczi | |
61 | d9d33417 | Stefan Hajnoczi | va_start(ap, fmt); |
62 | 687db4ed | Anthony Liguori | fprintf(stderr, "blkverify: %s sector_num=%" PRId64 " nb_sectors=%d ", |
63 | d9d33417 | Stefan Hajnoczi | acb->is_write ? "write" : "read", acb->sector_num, |
64 | d9d33417 | Stefan Hajnoczi | acb->nb_sectors); |
65 | d9d33417 | Stefan Hajnoczi | vfprintf(stderr, fmt, ap); |
66 | d9d33417 | Stefan Hajnoczi | fprintf(stderr, "\n");
|
67 | d9d33417 | Stefan Hajnoczi | va_end(ap); |
68 | d9d33417 | Stefan Hajnoczi | exit(1);
|
69 | d9d33417 | Stefan Hajnoczi | } |
70 | d9d33417 | Stefan Hajnoczi | |
71 | d9d33417 | Stefan Hajnoczi | /* Valid blkverify filenames look like blkverify:path/to/raw_image:path/to/image */
|
72 | d9d33417 | Stefan Hajnoczi | static int blkverify_open(BlockDriverState *bs, const char *filename, int flags) |
73 | d9d33417 | Stefan Hajnoczi | { |
74 | d9d33417 | Stefan Hajnoczi | BDRVBlkverifyState *s = bs->opaque; |
75 | d9d33417 | Stefan Hajnoczi | int ret;
|
76 | d9d33417 | Stefan Hajnoczi | char *raw, *c;
|
77 | d9d33417 | Stefan Hajnoczi | |
78 | d9d33417 | Stefan Hajnoczi | /* Parse the blkverify: prefix */
|
79 | d9d33417 | Stefan Hajnoczi | if (strncmp(filename, "blkverify:", strlen("blkverify:"))) { |
80 | d9d33417 | Stefan Hajnoczi | return -EINVAL;
|
81 | d9d33417 | Stefan Hajnoczi | } |
82 | d9d33417 | Stefan Hajnoczi | filename += strlen("blkverify:");
|
83 | d9d33417 | Stefan Hajnoczi | |
84 | d9d33417 | Stefan Hajnoczi | /* Parse the raw image filename */
|
85 | d9d33417 | Stefan Hajnoczi | c = strchr(filename, ':');
|
86 | d9d33417 | Stefan Hajnoczi | if (c == NULL) { |
87 | d9d33417 | Stefan Hajnoczi | return -EINVAL;
|
88 | d9d33417 | Stefan Hajnoczi | } |
89 | d9d33417 | Stefan Hajnoczi | |
90 | d9d33417 | Stefan Hajnoczi | raw = strdup(filename); |
91 | d9d33417 | Stefan Hajnoczi | raw[c - filename] = '\0';
|
92 | d9d33417 | Stefan Hajnoczi | ret = bdrv_file_open(&bs->file, raw, flags); |
93 | d9d33417 | Stefan Hajnoczi | free(raw); |
94 | d9d33417 | Stefan Hajnoczi | if (ret < 0) { |
95 | d9d33417 | Stefan Hajnoczi | return ret;
|
96 | d9d33417 | Stefan Hajnoczi | } |
97 | d9d33417 | Stefan Hajnoczi | filename = c + 1;
|
98 | d9d33417 | Stefan Hajnoczi | |
99 | d9d33417 | Stefan Hajnoczi | /* Open the test file */
|
100 | d9d33417 | Stefan Hajnoczi | s->test_file = bdrv_new("");
|
101 | d9d33417 | Stefan Hajnoczi | ret = bdrv_open(s->test_file, filename, flags, NULL);
|
102 | d9d33417 | Stefan Hajnoczi | if (ret < 0) { |
103 | d9d33417 | Stefan Hajnoczi | bdrv_delete(s->test_file); |
104 | d9d33417 | Stefan Hajnoczi | s->test_file = NULL;
|
105 | d9d33417 | Stefan Hajnoczi | return ret;
|
106 | d9d33417 | Stefan Hajnoczi | } |
107 | d9d33417 | Stefan Hajnoczi | |
108 | d9d33417 | Stefan Hajnoczi | return 0; |
109 | d9d33417 | Stefan Hajnoczi | } |
110 | d9d33417 | Stefan Hajnoczi | |
111 | d9d33417 | Stefan Hajnoczi | static void blkverify_close(BlockDriverState *bs) |
112 | d9d33417 | Stefan Hajnoczi | { |
113 | d9d33417 | Stefan Hajnoczi | BDRVBlkverifyState *s = bs->opaque; |
114 | d9d33417 | Stefan Hajnoczi | |
115 | d9d33417 | Stefan Hajnoczi | bdrv_delete(s->test_file); |
116 | d9d33417 | Stefan Hajnoczi | s->test_file = NULL;
|
117 | d9d33417 | Stefan Hajnoczi | } |
118 | d9d33417 | Stefan Hajnoczi | |
119 | 205ef796 | Kevin Wolf | static int blkverify_flush(BlockDriverState *bs) |
120 | d9d33417 | Stefan Hajnoczi | { |
121 | d9d33417 | Stefan Hajnoczi | BDRVBlkverifyState *s = bs->opaque; |
122 | d9d33417 | Stefan Hajnoczi | |
123 | d9d33417 | Stefan Hajnoczi | /* Only flush test file, the raw file is not important */
|
124 | 205ef796 | Kevin Wolf | return bdrv_flush(s->test_file);
|
125 | d9d33417 | Stefan Hajnoczi | } |
126 | d9d33417 | Stefan Hajnoczi | |
127 | d9d33417 | Stefan Hajnoczi | static int64_t blkverify_getlength(BlockDriverState *bs)
|
128 | d9d33417 | Stefan Hajnoczi | { |
129 | d9d33417 | Stefan Hajnoczi | BDRVBlkverifyState *s = bs->opaque; |
130 | d9d33417 | Stefan Hajnoczi | |
131 | d9d33417 | Stefan Hajnoczi | return bdrv_getlength(s->test_file);
|
132 | d9d33417 | Stefan Hajnoczi | } |
133 | d9d33417 | Stefan Hajnoczi | |
134 | d9d33417 | Stefan Hajnoczi | /**
|
135 | d9d33417 | Stefan Hajnoczi | * Check that I/O vector contents are identical
|
136 | d9d33417 | Stefan Hajnoczi | *
|
137 | d9d33417 | Stefan Hajnoczi | * @a: I/O vector
|
138 | d9d33417 | Stefan Hajnoczi | * @b: I/O vector
|
139 | d9d33417 | Stefan Hajnoczi | * @ret: Offset to first mismatching byte or -1 if match
|
140 | d9d33417 | Stefan Hajnoczi | */
|
141 | d9d33417 | Stefan Hajnoczi | static ssize_t blkverify_iovec_compare(QEMUIOVector *a, QEMUIOVector *b)
|
142 | d9d33417 | Stefan Hajnoczi | { |
143 | d9d33417 | Stefan Hajnoczi | int i;
|
144 | d9d33417 | Stefan Hajnoczi | ssize_t offset = 0;
|
145 | d9d33417 | Stefan Hajnoczi | |
146 | d9d33417 | Stefan Hajnoczi | assert(a->niov == b->niov); |
147 | d9d33417 | Stefan Hajnoczi | for (i = 0; i < a->niov; i++) { |
148 | d9d33417 | Stefan Hajnoczi | size_t len = 0;
|
149 | d9d33417 | Stefan Hajnoczi | uint8_t *p = (uint8_t *)a->iov[i].iov_base; |
150 | d9d33417 | Stefan Hajnoczi | uint8_t *q = (uint8_t *)b->iov[i].iov_base; |
151 | d9d33417 | Stefan Hajnoczi | |
152 | d9d33417 | Stefan Hajnoczi | assert(a->iov[i].iov_len == b->iov[i].iov_len); |
153 | d9d33417 | Stefan Hajnoczi | while (len < a->iov[i].iov_len && *p++ == *q++) {
|
154 | d9d33417 | Stefan Hajnoczi | len++; |
155 | d9d33417 | Stefan Hajnoczi | } |
156 | d9d33417 | Stefan Hajnoczi | |
157 | d9d33417 | Stefan Hajnoczi | offset += len; |
158 | d9d33417 | Stefan Hajnoczi | |
159 | d9d33417 | Stefan Hajnoczi | if (len != a->iov[i].iov_len) {
|
160 | d9d33417 | Stefan Hajnoczi | return offset;
|
161 | d9d33417 | Stefan Hajnoczi | } |
162 | d9d33417 | Stefan Hajnoczi | } |
163 | d9d33417 | Stefan Hajnoczi | return -1; |
164 | d9d33417 | Stefan Hajnoczi | } |
165 | d9d33417 | Stefan Hajnoczi | |
166 | d9d33417 | Stefan Hajnoczi | typedef struct { |
167 | d9d33417 | Stefan Hajnoczi | int src_index;
|
168 | d9d33417 | Stefan Hajnoczi | struct iovec *src_iov;
|
169 | d9d33417 | Stefan Hajnoczi | void *dest_base;
|
170 | d9d33417 | Stefan Hajnoczi | } IOVectorSortElem; |
171 | d9d33417 | Stefan Hajnoczi | |
172 | d9d33417 | Stefan Hajnoczi | static int sortelem_cmp_src_base(const void *a, const void *b) |
173 | d9d33417 | Stefan Hajnoczi | { |
174 | d9d33417 | Stefan Hajnoczi | const IOVectorSortElem *elem_a = a;
|
175 | d9d33417 | Stefan Hajnoczi | const IOVectorSortElem *elem_b = b;
|
176 | d9d33417 | Stefan Hajnoczi | |
177 | d9d33417 | Stefan Hajnoczi | /* Don't overflow */
|
178 | d9d33417 | Stefan Hajnoczi | if (elem_a->src_iov->iov_base < elem_b->src_iov->iov_base) {
|
179 | d9d33417 | Stefan Hajnoczi | return -1; |
180 | d9d33417 | Stefan Hajnoczi | } else if (elem_a->src_iov->iov_base > elem_b->src_iov->iov_base) { |
181 | d9d33417 | Stefan Hajnoczi | return 1; |
182 | d9d33417 | Stefan Hajnoczi | } else {
|
183 | d9d33417 | Stefan Hajnoczi | return 0; |
184 | d9d33417 | Stefan Hajnoczi | } |
185 | d9d33417 | Stefan Hajnoczi | } |
186 | d9d33417 | Stefan Hajnoczi | |
187 | d9d33417 | Stefan Hajnoczi | static int sortelem_cmp_src_index(const void *a, const void *b) |
188 | d9d33417 | Stefan Hajnoczi | { |
189 | d9d33417 | Stefan Hajnoczi | const IOVectorSortElem *elem_a = a;
|
190 | d9d33417 | Stefan Hajnoczi | const IOVectorSortElem *elem_b = b;
|
191 | d9d33417 | Stefan Hajnoczi | |
192 | d9d33417 | Stefan Hajnoczi | return elem_a->src_index - elem_b->src_index;
|
193 | d9d33417 | Stefan Hajnoczi | } |
194 | d9d33417 | Stefan Hajnoczi | |
195 | d9d33417 | Stefan Hajnoczi | /**
|
196 | d9d33417 | Stefan Hajnoczi | * Copy contents of I/O vector
|
197 | d9d33417 | Stefan Hajnoczi | *
|
198 | d9d33417 | Stefan Hajnoczi | * The relative relationships of overlapping iovecs are preserved. This is
|
199 | d9d33417 | Stefan Hajnoczi | * necessary to ensure identical semantics in the cloned I/O vector.
|
200 | d9d33417 | Stefan Hajnoczi | */
|
201 | d9d33417 | Stefan Hajnoczi | static void blkverify_iovec_clone(QEMUIOVector *dest, const QEMUIOVector *src, |
202 | d9d33417 | Stefan Hajnoczi | void *buf)
|
203 | d9d33417 | Stefan Hajnoczi | { |
204 | d9d33417 | Stefan Hajnoczi | IOVectorSortElem sortelems[src->niov]; |
205 | d9d33417 | Stefan Hajnoczi | void *last_end;
|
206 | d9d33417 | Stefan Hajnoczi | int i;
|
207 | d9d33417 | Stefan Hajnoczi | |
208 | d9d33417 | Stefan Hajnoczi | /* Sort by source iovecs by base address */
|
209 | d9d33417 | Stefan Hajnoczi | for (i = 0; i < src->niov; i++) { |
210 | d9d33417 | Stefan Hajnoczi | sortelems[i].src_index = i; |
211 | d9d33417 | Stefan Hajnoczi | sortelems[i].src_iov = &src->iov[i]; |
212 | d9d33417 | Stefan Hajnoczi | } |
213 | d9d33417 | Stefan Hajnoczi | qsort(sortelems, src->niov, sizeof(sortelems[0]), sortelem_cmp_src_base); |
214 | d9d33417 | Stefan Hajnoczi | |
215 | d9d33417 | Stefan Hajnoczi | /* Allocate buffer space taking into account overlapping iovecs */
|
216 | d9d33417 | Stefan Hajnoczi | last_end = NULL;
|
217 | d9d33417 | Stefan Hajnoczi | for (i = 0; i < src->niov; i++) { |
218 | d9d33417 | Stefan Hajnoczi | struct iovec *cur = sortelems[i].src_iov;
|
219 | d9d33417 | Stefan Hajnoczi | ptrdiff_t rewind = 0;
|
220 | d9d33417 | Stefan Hajnoczi | |
221 | d9d33417 | Stefan Hajnoczi | /* Detect overlap */
|
222 | d9d33417 | Stefan Hajnoczi | if (last_end && last_end > cur->iov_base) {
|
223 | d9d33417 | Stefan Hajnoczi | rewind = last_end - cur->iov_base; |
224 | d9d33417 | Stefan Hajnoczi | } |
225 | d9d33417 | Stefan Hajnoczi | |
226 | d9d33417 | Stefan Hajnoczi | sortelems[i].dest_base = buf - rewind; |
227 | d9d33417 | Stefan Hajnoczi | buf += cur->iov_len - MIN(rewind, cur->iov_len); |
228 | d9d33417 | Stefan Hajnoczi | last_end = MAX(cur->iov_base + cur->iov_len, last_end); |
229 | d9d33417 | Stefan Hajnoczi | } |
230 | d9d33417 | Stefan Hajnoczi | |
231 | d9d33417 | Stefan Hajnoczi | /* Sort by source iovec index and build destination iovec */
|
232 | d9d33417 | Stefan Hajnoczi | qsort(sortelems, src->niov, sizeof(sortelems[0]), sortelem_cmp_src_index); |
233 | d9d33417 | Stefan Hajnoczi | for (i = 0; i < src->niov; i++) { |
234 | d9d33417 | Stefan Hajnoczi | qemu_iovec_add(dest, sortelems[i].dest_base, src->iov[i].iov_len); |
235 | d9d33417 | Stefan Hajnoczi | } |
236 | d9d33417 | Stefan Hajnoczi | } |
237 | d9d33417 | Stefan Hajnoczi | |
238 | d9d33417 | Stefan Hajnoczi | static BlkverifyAIOCB *blkverify_aio_get(BlockDriverState *bs, bool is_write, |
239 | d9d33417 | Stefan Hajnoczi | int64_t sector_num, QEMUIOVector *qiov, |
240 | d9d33417 | Stefan Hajnoczi | int nb_sectors,
|
241 | d9d33417 | Stefan Hajnoczi | BlockDriverCompletionFunc *cb, |
242 | d9d33417 | Stefan Hajnoczi | void *opaque)
|
243 | d9d33417 | Stefan Hajnoczi | { |
244 | d9d33417 | Stefan Hajnoczi | BlkverifyAIOCB *acb = qemu_aio_get(&blkverify_aio_pool, bs, cb, opaque); |
245 | d9d33417 | Stefan Hajnoczi | |
246 | d9d33417 | Stefan Hajnoczi | acb->bh = NULL;
|
247 | d9d33417 | Stefan Hajnoczi | acb->is_write = is_write; |
248 | d9d33417 | Stefan Hajnoczi | acb->sector_num = sector_num; |
249 | d9d33417 | Stefan Hajnoczi | acb->nb_sectors = nb_sectors; |
250 | d9d33417 | Stefan Hajnoczi | acb->ret = -EINPROGRESS; |
251 | d9d33417 | Stefan Hajnoczi | acb->done = 0;
|
252 | d9d33417 | Stefan Hajnoczi | acb->qiov = qiov; |
253 | d9d33417 | Stefan Hajnoczi | acb->buf = NULL;
|
254 | d9d33417 | Stefan Hajnoczi | acb->verify = NULL;
|
255 | d9d33417 | Stefan Hajnoczi | acb->finished = NULL;
|
256 | d9d33417 | Stefan Hajnoczi | return acb;
|
257 | d9d33417 | Stefan Hajnoczi | } |
258 | d9d33417 | Stefan Hajnoczi | |
259 | d9d33417 | Stefan Hajnoczi | static void blkverify_aio_bh(void *opaque) |
260 | d9d33417 | Stefan Hajnoczi | { |
261 | d9d33417 | Stefan Hajnoczi | BlkverifyAIOCB *acb = opaque; |
262 | d9d33417 | Stefan Hajnoczi | |
263 | d9d33417 | Stefan Hajnoczi | qemu_bh_delete(acb->bh); |
264 | d9d33417 | Stefan Hajnoczi | if (acb->buf) {
|
265 | d9d33417 | Stefan Hajnoczi | qemu_iovec_destroy(&acb->raw_qiov); |
266 | d9d33417 | Stefan Hajnoczi | qemu_vfree(acb->buf); |
267 | d9d33417 | Stefan Hajnoczi | } |
268 | d9d33417 | Stefan Hajnoczi | acb->common.cb(acb->common.opaque, acb->ret); |
269 | d9d33417 | Stefan Hajnoczi | if (acb->finished) {
|
270 | d9d33417 | Stefan Hajnoczi | *acb->finished = true;
|
271 | d9d33417 | Stefan Hajnoczi | } |
272 | d9d33417 | Stefan Hajnoczi | qemu_aio_release(acb); |
273 | d9d33417 | Stefan Hajnoczi | } |
274 | d9d33417 | Stefan Hajnoczi | |
275 | d9d33417 | Stefan Hajnoczi | static void blkverify_aio_cb(void *opaque, int ret) |
276 | d9d33417 | Stefan Hajnoczi | { |
277 | d9d33417 | Stefan Hajnoczi | BlkverifyAIOCB *acb = opaque; |
278 | d9d33417 | Stefan Hajnoczi | |
279 | d9d33417 | Stefan Hajnoczi | switch (++acb->done) {
|
280 | d9d33417 | Stefan Hajnoczi | case 1: |
281 | d9d33417 | Stefan Hajnoczi | acb->ret = ret; |
282 | d9d33417 | Stefan Hajnoczi | break;
|
283 | d9d33417 | Stefan Hajnoczi | |
284 | d9d33417 | Stefan Hajnoczi | case 2: |
285 | d9d33417 | Stefan Hajnoczi | if (acb->ret != ret) {
|
286 | d9d33417 | Stefan Hajnoczi | blkverify_err(acb, "return value mismatch %d != %d", acb->ret, ret);
|
287 | d9d33417 | Stefan Hajnoczi | } |
288 | d9d33417 | Stefan Hajnoczi | |
289 | d9d33417 | Stefan Hajnoczi | if (acb->verify) {
|
290 | d9d33417 | Stefan Hajnoczi | acb->verify(acb); |
291 | d9d33417 | Stefan Hajnoczi | } |
292 | d9d33417 | Stefan Hajnoczi | |
293 | d9d33417 | Stefan Hajnoczi | acb->bh = qemu_bh_new(blkverify_aio_bh, acb); |
294 | d9d33417 | Stefan Hajnoczi | qemu_bh_schedule(acb->bh); |
295 | d9d33417 | Stefan Hajnoczi | break;
|
296 | d9d33417 | Stefan Hajnoczi | } |
297 | d9d33417 | Stefan Hajnoczi | } |
298 | d9d33417 | Stefan Hajnoczi | |
299 | d9d33417 | Stefan Hajnoczi | static void blkverify_verify_readv(BlkverifyAIOCB *acb) |
300 | d9d33417 | Stefan Hajnoczi | { |
301 | d9d33417 | Stefan Hajnoczi | ssize_t offset = blkverify_iovec_compare(acb->qiov, &acb->raw_qiov); |
302 | d9d33417 | Stefan Hajnoczi | if (offset != -1) { |
303 | a3133586 | Blue Swirl | blkverify_err(acb, "contents mismatch in sector %" PRId64,
|
304 | a3133586 | Blue Swirl | acb->sector_num + (int64_t)(offset / BDRV_SECTOR_SIZE)); |
305 | d9d33417 | Stefan Hajnoczi | } |
306 | d9d33417 | Stefan Hajnoczi | } |
307 | d9d33417 | Stefan Hajnoczi | |
308 | d9d33417 | Stefan Hajnoczi | static BlockDriverAIOCB *blkverify_aio_readv(BlockDriverState *bs,
|
309 | d9d33417 | Stefan Hajnoczi | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
|
310 | d9d33417 | Stefan Hajnoczi | BlockDriverCompletionFunc *cb, void *opaque)
|
311 | d9d33417 | Stefan Hajnoczi | { |
312 | d9d33417 | Stefan Hajnoczi | BDRVBlkverifyState *s = bs->opaque; |
313 | d9d33417 | Stefan Hajnoczi | BlkverifyAIOCB *acb = blkverify_aio_get(bs, false, sector_num, qiov,
|
314 | d9d33417 | Stefan Hajnoczi | nb_sectors, cb, opaque); |
315 | d9d33417 | Stefan Hajnoczi | |
316 | d9d33417 | Stefan Hajnoczi | acb->verify = blkverify_verify_readv; |
317 | d9d33417 | Stefan Hajnoczi | acb->buf = qemu_blockalign(bs->file, qiov->size); |
318 | d9d33417 | Stefan Hajnoczi | qemu_iovec_init(&acb->raw_qiov, acb->qiov->niov); |
319 | d9d33417 | Stefan Hajnoczi | blkverify_iovec_clone(&acb->raw_qiov, qiov, acb->buf); |
320 | d9d33417 | Stefan Hajnoczi | |
321 | d9d33417 | Stefan Hajnoczi | if (!bdrv_aio_readv(s->test_file, sector_num, qiov, nb_sectors,
|
322 | d9d33417 | Stefan Hajnoczi | blkverify_aio_cb, acb)) { |
323 | d9d33417 | Stefan Hajnoczi | blkverify_aio_cb(acb, -EIO); |
324 | d9d33417 | Stefan Hajnoczi | } |
325 | d9d33417 | Stefan Hajnoczi | if (!bdrv_aio_readv(bs->file, sector_num, &acb->raw_qiov, nb_sectors,
|
326 | d9d33417 | Stefan Hajnoczi | blkverify_aio_cb, acb)) { |
327 | d9d33417 | Stefan Hajnoczi | blkverify_aio_cb(acb, -EIO); |
328 | d9d33417 | Stefan Hajnoczi | } |
329 | d9d33417 | Stefan Hajnoczi | return &acb->common;
|
330 | d9d33417 | Stefan Hajnoczi | } |
331 | d9d33417 | Stefan Hajnoczi | |
332 | d9d33417 | Stefan Hajnoczi | static BlockDriverAIOCB *blkverify_aio_writev(BlockDriverState *bs,
|
333 | d9d33417 | Stefan Hajnoczi | int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
|
334 | d9d33417 | Stefan Hajnoczi | BlockDriverCompletionFunc *cb, void *opaque)
|
335 | d9d33417 | Stefan Hajnoczi | { |
336 | d9d33417 | Stefan Hajnoczi | BDRVBlkverifyState *s = bs->opaque; |
337 | d9d33417 | Stefan Hajnoczi | BlkverifyAIOCB *acb = blkverify_aio_get(bs, true, sector_num, qiov,
|
338 | d9d33417 | Stefan Hajnoczi | nb_sectors, cb, opaque); |
339 | d9d33417 | Stefan Hajnoczi | |
340 | d9d33417 | Stefan Hajnoczi | if (!bdrv_aio_writev(s->test_file, sector_num, qiov, nb_sectors,
|
341 | d9d33417 | Stefan Hajnoczi | blkverify_aio_cb, acb)) { |
342 | d9d33417 | Stefan Hajnoczi | blkverify_aio_cb(acb, -EIO); |
343 | d9d33417 | Stefan Hajnoczi | } |
344 | d9d33417 | Stefan Hajnoczi | if (!bdrv_aio_writev(bs->file, sector_num, qiov, nb_sectors,
|
345 | d9d33417 | Stefan Hajnoczi | blkverify_aio_cb, acb)) { |
346 | d9d33417 | Stefan Hajnoczi | blkverify_aio_cb(acb, -EIO); |
347 | d9d33417 | Stefan Hajnoczi | } |
348 | d9d33417 | Stefan Hajnoczi | return &acb->common;
|
349 | d9d33417 | Stefan Hajnoczi | } |
350 | d9d33417 | Stefan Hajnoczi | |
351 | d9d33417 | Stefan Hajnoczi | static BlockDriverAIOCB *blkverify_aio_flush(BlockDriverState *bs,
|
352 | d9d33417 | Stefan Hajnoczi | BlockDriverCompletionFunc *cb, |
353 | d9d33417 | Stefan Hajnoczi | void *opaque)
|
354 | d9d33417 | Stefan Hajnoczi | { |
355 | d9d33417 | Stefan Hajnoczi | BDRVBlkverifyState *s = bs->opaque; |
356 | d9d33417 | Stefan Hajnoczi | |
357 | d9d33417 | Stefan Hajnoczi | /* Only flush test file, the raw file is not important */
|
358 | d9d33417 | Stefan Hajnoczi | return bdrv_aio_flush(s->test_file, cb, opaque);
|
359 | d9d33417 | Stefan Hajnoczi | } |
360 | d9d33417 | Stefan Hajnoczi | |
361 | d9d33417 | Stefan Hajnoczi | static BlockDriver bdrv_blkverify = {
|
362 | d9d33417 | Stefan Hajnoczi | .format_name = "blkverify",
|
363 | d9d33417 | Stefan Hajnoczi | .protocol_name = "blkverify",
|
364 | d9d33417 | Stefan Hajnoczi | |
365 | d9d33417 | Stefan Hajnoczi | .instance_size = sizeof(BDRVBlkverifyState),
|
366 | d9d33417 | Stefan Hajnoczi | |
367 | d9d33417 | Stefan Hajnoczi | .bdrv_getlength = blkverify_getlength, |
368 | d9d33417 | Stefan Hajnoczi | |
369 | d9d33417 | Stefan Hajnoczi | .bdrv_file_open = blkverify_open, |
370 | d9d33417 | Stefan Hajnoczi | .bdrv_close = blkverify_close, |
371 | d9d33417 | Stefan Hajnoczi | .bdrv_flush = blkverify_flush, |
372 | d9d33417 | Stefan Hajnoczi | |
373 | d9d33417 | Stefan Hajnoczi | .bdrv_aio_readv = blkverify_aio_readv, |
374 | d9d33417 | Stefan Hajnoczi | .bdrv_aio_writev = blkverify_aio_writev, |
375 | d9d33417 | Stefan Hajnoczi | .bdrv_aio_flush = blkverify_aio_flush, |
376 | d9d33417 | Stefan Hajnoczi | }; |
377 | d9d33417 | Stefan Hajnoczi | |
378 | d9d33417 | Stefan Hajnoczi | static void bdrv_blkverify_init(void) |
379 | d9d33417 | Stefan Hajnoczi | { |
380 | d9d33417 | Stefan Hajnoczi | bdrv_register(&bdrv_blkverify); |
381 | d9d33417 | Stefan Hajnoczi | } |
382 | d9d33417 | Stefan Hajnoczi | |
383 | d9d33417 | Stefan Hajnoczi | block_init(bdrv_blkverify_init); |