static int qemu_rbd_snap_rollback(BlockDriverState *bs,
const char *snapshot_name)
{
BDRVRBDState *s = bs->opaque;
return rbd_snap_rollback(s->image, snapshot_name);
}
void test_io_to_snapshot(rados_ioctx_t io_ctx, rbd_image_t image, size_t isize)
{
int i, r;
rbd_image_t image_at_snap;
char orig_data[TEST_IO_TO_SNAP_SIZE + 1];
char test_data[TEST_IO_TO_SNAP_SIZE + 1];
for (i = 0; i < TEST_IO_TO_SNAP_SIZE - 1; ++i)
test_data[i] = (char) (i + 48);
test_data[TEST_IO_TO_SNAP_SIZE] = '\0';
orig_data[TEST_IO_TO_SNAP_SIZE] = '\0';
r = rbd_read(image, 0, TEST_IO_TO_SNAP_SIZE, orig_data);
assert(r == TEST_IO_TO_SNAP_SIZE);
test_ls_snaps(image, 0);
test_create_snap(image, "orig");
test_ls_snaps(image, 1, "orig", isize);
read_test_data(image, orig_data, 0, TEST_IO_TO_SNAP_SIZE);
printf("write test data!\n");
write_test_data(image, test_data, 0, TEST_IO_TO_SNAP_SIZE);
test_create_snap(image, "written");
test_ls_snaps(image, 2, "orig", isize, "written", isize);
read_test_data(image, test_data, 0, TEST_IO_TO_SNAP_SIZE);
rbd_snap_set(image, "orig");
read_test_data(image, orig_data, 0, TEST_IO_TO_SNAP_SIZE);
rbd_snap_set(image, "written");
read_test_data(image, test_data, 0, TEST_IO_TO_SNAP_SIZE);
rbd_snap_set(image, "orig");
r = rbd_write(image, 0, TEST_IO_TO_SNAP_SIZE, test_data);
printf("write to snapshot returned %d\n", r);
assert(r < 0);
printf("%s\n", strerror(-r));
read_test_data(image, orig_data, 0, TEST_IO_TO_SNAP_SIZE);
rbd_snap_set(image, "written");
read_test_data(image, test_data, 0, TEST_IO_TO_SNAP_SIZE);
r = rbd_snap_rollback(image, "orig");
printf("rbd_snap_rollback returned %d\n", r);
assert(r >= 0);
r = rbd_snap_set(image, NULL);
assert(r == 0);
write_test_data(image, test_data, 0, TEST_IO_TO_SNAP_SIZE);
printf("opening testimg@orig\n");
assert(rbd_open(io_ctx, TEST_IMAGE, &image_at_snap, "orig") >= 0);
read_test_data(image_at_snap, orig_data, 0, TEST_IO_TO_SNAP_SIZE);
r = rbd_write(image_at_snap, 0, TEST_IO_TO_SNAP_SIZE, test_data);
printf("write to snapshot returned %d\n", r);
assert(r < 0);
printf("%s\n", strerror(-r));
assert(rbd_close(image_at_snap) == 0);
test_ls_snaps(image, 2, "orig", isize, "written", isize);
test_delete_snap(image, "written");
test_ls_snaps(image, 1, "orig", isize);
test_delete_snap(image, "orig");
test_ls_snaps(image, 0);
}
