[pve-devel] [PATCH 5/5] add regression tests for backup
Dietmar Maurer
dietmar at proxmox.com
Mon Nov 19 12:29:32 CET 2012
Also added the ratelimit.h fix here, because it is still not upstream.
Signed-off-by: Dietmar Maurer <dietmar at proxmox.com>
---
include/qemu/ratelimit.h | 2 +-
tests/Makefile | 11 +-
tests/backup-test.c | 500 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 510 insertions(+), 3 deletions(-)
create mode 100644 tests/backup-test.c
diff --git a/include/qemu/ratelimit.h b/include/qemu/ratelimit.h
index c6ac281..d1610f1 100644
--- a/include/qemu/ratelimit.h
+++ b/include/qemu/ratelimit.h
@@ -42,7 +42,7 @@ static inline void ratelimit_set_speed(RateLimit *limit, uint64_t speed,
uint64_t slice_ns)
{
limit->slice_ns = slice_ns;
- limit->slice_quota = ((double)speed * 1000000000ULL) / slice_ns;
+ limit->slice_quota = ((double)speed * slice_ns)/1000000000ULL;
}
#endif
diff --git a/tests/Makefile b/tests/Makefile
index 9bf0765..92757c5 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -18,6 +18,8 @@ check-unit-y += tests/test-iov$(EXESUF)
check-block-$(CONFIG_POSIX) += tests/qemu-iotests-quick.sh
+check-backup-y = tests/backup-test$(EXESUF)
+
# All QTests for now are POSIX-only, but the dependencies are
# really in libqtest, not in the testcases themselves.
check-qtest-i386-y = tests/fdc-test$(EXESUF)
@@ -50,6 +52,7 @@ tests/check-qfloat$(EXESUF): tests/check-qfloat.o qfloat.o
tests/check-qjson$(EXESUF): tests/check-qjson.o $(qobject-obj-y) qemu-tool.o
tests/test-coroutine$(EXESUF): tests/test-coroutine.o $(coroutine-obj-y) $(tools-obj-y) $(block-obj-y) iov.o
tests/test-iov$(EXESUF): tests/test-iov.o iov.o
+tests/backup-test$(EXESUF): tests/backup-test.o vma-reader.o $(tools-obj-y) $(block-obj-y)
tests/test-qapi-types.c tests/test-qapi-types.h :\
$(SRC_PATH)/qapi-schema-test.json $(SRC_PATH)/scripts/qapi-types.py
@@ -142,10 +145,14 @@ check-tests/qemu-iotests-quick.sh: tests/qemu-iotests-quick.sh qemu-img$(EXESUF)
# Consolidated targets
-.PHONY: check-qtest check-unit check
+.PHONY: check-backup check-qtest check-unit check
check-qtest: $(patsubst %,check-qtest-%, $(QTEST_TARGETS))
check-unit: $(patsubst %,check-%, $(check-unit-y))
check-block: $(patsubst %,check-%, $(check-block-y))
-check: check-unit check-qtest
+
+check-backup: tests/backup-test$(EXESUF)
+ $<
+
+check: check-unit check-qtest check-backup
-include $(wildcard tests/*.d)
diff --git a/tests/backup-test.c b/tests/backup-test.c
new file mode 100644
index 0000000..57695d3
--- /dev/null
+++ b/tests/backup-test.c
@@ -0,0 +1,500 @@
+/*
+ * QEMU backup test suit
+ *
+ * Copyright (C) Proxmox Server Solutions
+ *
+ * Authors:
+ * Dietmar Maurer (dietmar at proxmox.com)
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ * Fixme: running 'backup-test -l' trigger a bug in g_slice_alloc()
+ * Note: 'G_SLICE=always-malloc ./tests/backup-test -l' works
+ *
+ */
+
+#include <sys/time.h>
+#include <sys/types.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <getopt.h>
+#include <libgen.h>
+
+#include "qemu-common.h"
+#include "main-loop.h"
+#include "block.h"
+
+#include "vma.h"
+
+static int opt_debug = 0;
+static int opt_loop = 0;
+
+#define DPRINTF(fmt, ...) \
+ do { if (opt_debug) printf(fmt, ## __VA_ARGS__); } while (0)
+
+#define CLUSTER(x) (x*BACKUP_CLUSTER_SIZE)
+
+#define RUN_TEST(testfunc, speed) backup_test(#testfunc " speed " #speed, speed, testfunc);
+
+
+static unsigned char buf_sec_pattern_cd[BDRV_SECTOR_SIZE];
+static unsigned char buf_sec_pattern_32[BDRV_SECTOR_SIZE];
+
+#define TEST_IMG_SIZE (6*1024*1024+BDRV_SECTOR_SIZE)
+#define TEST_IMG_NAME "backuptest.raw"
+#define TEST_IMG_RESTORE_NAME "backuptest.raw.restore"
+#define TEST_VMA_NAME "backuptest.vma"
+
+typedef struct BackupCB {
+ VmaWriter *vmaw;
+ uint8_t dev_id;
+} BackupCB;
+
+static int backup_dump_cb(void *opaque, BlockDriverState *bs,
+ int64_t cluster_num, unsigned char *buf)
+{
+ BackupCB *bcb = opaque;
+
+ DPRINTF("backup_dump_cb C%zd %d\n", cluster_num, bcb->dev_id);
+
+ if (vma_writer_write(bcb->vmaw, bcb->dev_id, cluster_num, buf) < 0) {
+ printf("backup_dump_cb vma_writer_write failed\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static void backup_complete_cb(void *opaque, int ret)
+{
+ BackupCB *bcb = opaque;
+
+ DPRINTF("backup_complete_cb %d %d\n", bcb->dev_id, ret);
+
+ if (ret < 0) {
+ vma_writer_set_error(bcb->vmaw, "backup_complete_cb %d", ret);
+ }
+
+ if (vma_writer_close_stream(bcb->vmaw, bcb->dev_id) <= 0) {
+ if (vma_writer_close(bcb->vmaw) != 0) {
+ g_error("vma_writer_close failed");
+ }
+ }
+ DPRINTF("backup_complete_cb finish\n");
+}
+
+static void write_sec_pattern_cd(BlockDriverState *bs, int64_t offset)
+{
+ int ret;
+
+ DPRINTF("write_sec_pattern_cd %zd\n", offset);
+
+ if (offset & 0x1ff) {
+ g_error("write_sec_pattern_cd offset %zd is not sector aligned\n", offset);
+ }
+
+ ret = bdrv_write(bs, offset >> 9, buf_sec_pattern_cd, 1);
+ if (ret < 0) {
+ g_error("write_sec_pattern_cd %zd failed", offset);
+ }
+
+}
+
+static void read_sec(BlockDriverState *bs, int64_t offset, unsigned char *buf)
+{
+ DPRINTF("read_sec C%zd start %zd\n", offset>>VMA_CLUSTER_BITS, offset);
+
+ if (offset & 0x1ff) {
+ g_error("read_sec offset %zd is not sector aligned\n", offset);
+ }
+
+ if (bdrv_read(bs, offset >> 9, buf, 1) < 0) {
+ g_error("bdrv_read failed");
+ }
+}
+
+static bool request_term = false;
+
+typedef struct TestCB {
+ Coroutine *co;
+ BlockDriverState *bs;
+ bool finished;
+} TestCB;
+
+static TestCB *enter_test_co(BlockDriverState *bs, CoroutineEntry *entry)
+{
+ TestCB *cb = g_new0(TestCB, 1);
+ cb->bs = bs;
+ cb->co = qemu_coroutine_create(entry);
+ qemu_coroutine_enter(cb->co, cb);
+ return cb;
+}
+
+static void test_co_sleep(double sec) {
+ co_sleep_ns(rt_clock, (int64_t)(sec*1000000000));
+};
+
+static void test_co_yield(void) {
+ co_sleep_ns(rt_clock, (int64_t)(1000));
+};
+
+static void coroutine_fn run_co_test1(void *opaque)
+{
+ assert(opaque);
+ TestCB *cb = (TestCB *)opaque;
+
+ test_co_sleep(0.2);
+ write_sec_pattern_cd(cb->bs, 5*BACKUP_CLUSTER_SIZE);
+ test_co_sleep(0.2);
+ write_sec_pattern_cd(cb->bs, 10*BACKUP_CLUSTER_SIZE);
+ test_co_sleep(0.2);
+ write_sec_pattern_cd(cb->bs, 10*BACKUP_CLUSTER_SIZE);
+
+ cb->finished = true;
+}
+
+static void coroutine_fn run_co_test2(void *opaque)
+{
+ assert(opaque);
+ TestCB *cb = (TestCB *)opaque;
+ unsigned char buf[512];
+
+ test_co_sleep(0.2);
+ read_sec(cb->bs, 5*BACKUP_CLUSTER_SIZE, buf);
+ write_sec_pattern_cd(cb->bs, 6*BACKUP_CLUSTER_SIZE);
+
+ cb->finished = true;
+}
+
+static void coroutine_fn run_co_random_read(void *opaque)
+{
+ assert(opaque);
+ TestCB *cb = (TestCB *)opaque;
+ int64_t sectors = bdrv_getlength(cb->bs)/BDRV_SECTOR_SIZE - 1;
+ unsigned char buf[512];
+
+ while(1) {
+ test_co_yield();
+ if (request_term) {
+ DPRINTF("finish run_co_random_read\n");
+ break;
+ }
+ int64_t s = (rand()*sectors)/RAND_MAX;
+ read_sec(cb->bs, s*BDRV_SECTOR_SIZE, buf);
+ }
+
+ cb->finished = true;
+}
+
+static void coroutine_fn run_co_random_write(void *opaque)
+{
+ assert(opaque);
+ TestCB *cb = (TestCB *)opaque;
+ int64_t sectors = bdrv_getlength(cb->bs)/BDRV_SECTOR_SIZE;
+
+ while(1) {
+ test_co_yield();
+ if (request_term) {
+ DPRINTF("finish run_co_random_write\n");
+ break;
+ }
+ int64_t s = (rand()*sectors)/RAND_MAX;
+ write_sec_pattern_cd(cb->bs, s*BDRV_SECTOR_SIZE);
+ }
+
+ cb->finished = true;
+}
+
+static void fill_test_sector(void *buf, size_t sector_num)
+{
+ int64_t *i64buf = (int64_t *)buf;
+ int i;
+
+ int data = sector_num;
+ if (sector_num >= 8 && sector_num < 8*(2*16+2)) {
+ data = 0; /* add zero region for testing */
+ }
+
+ for (i = 0; i < (512/sizeof(int64_t)); i++) {
+ i64buf[i] = data;
+ }
+}
+
+static void verify_archive(const char *archive, size_t size)
+{
+ Error *errp = NULL;
+
+ VmaReader *vmar = vma_reader_create(archive, &errp);
+
+ if (!vmar) {
+ g_error("%s", error_get_pretty(errp));
+ }
+
+ VmaDeviceInfo *di = vma_reader_get_device_info(vmar, 1);
+ if (!di || strcmp((char *)di->devname, "hda") || di->size != size) {
+ g_error("got wrong device info");
+ }
+
+ unlink(TEST_IMG_RESTORE_NAME);
+
+ int flags = BDRV_O_NATIVE_AIO|BDRV_O_RDWR|BDRV_O_CACHE_WB;
+
+ if (bdrv_img_create(TEST_IMG_RESTORE_NAME, "raw", NULL, NULL, NULL,
+ size, flags)) {
+ g_error("can't create file %s", TEST_IMG_RESTORE_NAME);
+ }
+
+ BlockDriverState *bs = NULL;
+ if (bdrv_file_open(&bs, TEST_IMG_RESTORE_NAME, flags)) {
+ g_error("can't open file %s", TEST_IMG_RESTORE_NAME);
+ }
+ if (vma_reader_register_bs(vmar, 1, bs, false, &errp) < 0) {
+ g_error("%s", error_get_pretty(errp));
+ }
+
+ if (vma_reader_restore(vmar, &errp) < 0) {
+ g_error("restore failed - %s", error_get_pretty(errp));
+ }
+
+ size_t i;
+ size_t sectors = size/BDRV_SECTOR_SIZE;
+ int64_t buf[512/sizeof(int64_t)];
+ int64_t buf2[512/sizeof(int64_t)];
+
+ for (i = 0; i < sectors; i++) {
+ if (bdrv_read(bs, i, (uint8_t *)buf, 1) != 0) {
+ g_error("bdrv_read failed");
+ }
+ fill_test_sector(buf2, i);
+ if (bcmp(buf, buf2, sizeof(buf))) {
+ g_error("data is different at sector %zd", i);
+ }
+ }
+
+ vma_reader_destroy(vmar);
+
+ unlink(TEST_IMG_RESTORE_NAME);
+}
+
+static void prepare_vm_image(const char *filename, size_t sectors)
+{
+ int fd;
+ if ((fd = open(filename, O_RDWR|O_CREAT|O_TRUNC, 0644)) < 0) {
+ g_error("can't open file %s\n", filename);
+ }
+
+ size_t i;
+ int64_t buf[512/sizeof(int64_t)];
+
+ for (i = 0; i < sectors; i++) {
+ fill_test_sector(buf, i);
+
+ int res = 0;
+ while (1) {
+ res = write(fd, buf, sizeof(buf));
+ if (!(res < 0 && errno == EINTR)) {
+ break;
+ }
+ }
+ if (res != sizeof(buf)) {
+ g_error("can't initialize file %s - %s %d\n", filename, strerror(errno), res);
+ }
+ }
+
+ if (close(fd) != 0) {
+ g_error("close failed");
+ }
+}
+
+static GList *simple_test(BlockDriverState *bs)
+{
+ GList *cb_list = NULL;
+
+ cb_list = g_list_append(cb_list, enter_test_co(bs, run_co_test1));
+ cb_list = g_list_append(cb_list, enter_test_co(bs, run_co_test2));
+
+ return cb_list;
+}
+
+static GList *random_read_write_test(BlockDriverState *bs)
+{
+ GList *cb_list = NULL;
+
+ cb_list = g_list_append(cb_list, enter_test_co(bs, run_co_random_read));
+ cb_list = g_list_append(cb_list, enter_test_co(bs, run_co_random_read));
+ cb_list = g_list_append(cb_list, enter_test_co(bs, run_co_random_write));
+ cb_list = g_list_append(cb_list, enter_test_co(bs, run_co_random_write));
+
+ return cb_list;
+}
+
+static void backup_test(const char *testname, int64_t speed,
+ GList *(*start_test_cb)(BlockDriverState *bs))
+{
+ BlockDriverState *bs = bdrv_new("hda");
+
+ static int test_counter;
+
+ test_counter++;
+
+ printf("starting test #%d '%s'\n", test_counter, testname);
+
+ const char *filename = TEST_IMG_NAME;
+
+ prepare_vm_image(TEST_IMG_NAME, TEST_IMG_SIZE/BDRV_SECTOR_SIZE);
+
+ int flags = BDRV_O_NATIVE_AIO|BDRV_O_RDWR|BDRV_O_CACHE_WB;
+
+ if (bdrv_open(bs, filename, flags, NULL) < 0) {
+ g_error("can't open device %s\n", filename);
+ }
+
+ Error *err = NULL;
+
+ unlink(TEST_VMA_NAME);
+
+ //VmaWriter *vmaw = vma_writer_create("exec:cat >" TEST_VMA_NAME, speed, &err);
+ VmaWriter *vmaw = vma_writer_create(TEST_VMA_NAME, speed, &err);
+ if (!vmaw) {
+ g_error("%s", error_get_pretty(err));
+ }
+
+ BackupCB bcb;
+ bcb.vmaw = vmaw;
+ bcb.dev_id = vma_writer_register_stream(vmaw, bdrv_get_device_name(bs),
+ bdrv_getlength(bs));
+ bdrv_backup_init(bs, backup_dump_cb, backup_complete_cb, &bcb);
+
+ request_term = false;
+
+ GList *cb_list = start_test_cb(bs);
+
+ while (1) {
+ main_loop_wait(false);
+
+ VmaStatus vmastat;
+ vma_writer_get_status(vmaw, &vmastat);
+ if (vmastat.closed) {
+ break;
+ }
+ }
+
+ request_term = true;
+
+ while (1) {
+ GList *l = cb_list;
+ bool active = 0;
+ while (l && l->data) {
+ TestCB *cb = (TestCB *)l->data;
+ l = g_list_next(l);
+ if (!cb->finished) {
+ active = true;
+ break;
+ }
+ }
+ if (!active) {
+ DPRINTF("All test coroutines finished\n");
+ break;
+ }
+ main_loop_wait(false);
+ }
+
+ /* Make sure all outstanding requests complete */
+ bdrv_drain_all();
+
+ VmaStatus vmastat;
+ vma_writer_get_status(vmaw, &vmastat);
+ DPRINTF("statistic %zd %zd\n", vmastat.stream_info[1].size, vmastat.stream_info[1].transferred);
+ assert(vmastat.stream_info[1].size == vmastat.stream_info[1].transferred);
+
+ vma_writer_destroy(vmaw);
+
+ bdrv_delete(bs);
+
+ /* start verification */
+ verify_archive(TEST_VMA_NAME, TEST_IMG_SIZE);
+
+ bdrv_close_all();
+
+ unlink(TEST_IMG_NAME);
+ unlink(TEST_VMA_NAME);
+
+ printf("finish test #%d '%s' OK\n", test_counter, testname);
+}
+
+static void help(void)
+{
+ const char *help_msg =
+ "usage: backup-test [options]\n"
+ "\n"
+ "backup-test run default regression test (fast)\n"
+ "backup-test -l run long running test loop (endless)\n"
+ "\n"
+ "use option -d to turn on verbose debug output\n"
+ ;
+
+ printf("%s", help_msg);
+ exit(1);
+}
+
+int main(int argc, char **argv)
+{
+ int c;
+
+ for(;;) {
+ c = getopt(argc, argv, "hdl");
+ if (c == -1) {
+ break;
+ }
+ switch(c) {
+ case '?':
+ case 'h':
+ help();
+ break;
+ case 'd':
+ opt_debug = 1;
+ break;
+ case 'l':
+ opt_loop = 1;
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ }
+
+ memset(buf_sec_pattern_cd, 0xcd, sizeof(buf_sec_pattern_cd));
+ memset(buf_sec_pattern_32, 0x32, sizeof(buf_sec_pattern_32));
+
+ srand(1234);
+
+ /* ignore SIGPIPE */
+ struct sigaction act;
+ sigfillset(&act.sa_mask);
+ act.sa_flags = 0;
+ act.sa_handler = SIG_IGN;
+ sigaction(SIGPIPE, &act, NULL);
+
+ qemu_init_main_loop();
+
+ bdrv_init();
+
+ if (opt_loop) { /* endless test loop */
+ while (1) {
+ RUN_TEST(random_read_write_test, 0);
+ }
+ return 0;
+ }
+
+ if (opt_debug) { /* run simple test (rate limited) */
+ RUN_TEST(simple_test, 1024*1024);
+ return 0;
+ }
+
+ /* run default regression tests at full speed */
+
+ RUN_TEST(simple_test, 0);
+ RUN_TEST(random_read_write_test, 0);
+
+ return 0;
+}
--
1.7.2.5
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