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qemu/tests/test-replication.c
Max Reitz 609f45ea95 block: Add block-specific QDict header 
There are numerous QDict functions that have been introduced for and are
used only by the block layer.  Move their declarations into an own
header file to reflect that.

While qdict_extract_subqdict() is in fact used outside of the block
layer (in util/qemu-config.c), it is still a function related very
closely to how the block layer works with nested QDicts, namely by
sometimes flattening them.  Therefore, its declaration is put into this
header as well and util/qemu-config.c includes it with a comment stating
exactly which function it needs.

Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20180509165530.29561-7-mreitz@redhat.com>
[Copyright note tweaked, superfluous includes dropped]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-06-15 14:49:44 +02:00

586 lines
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/*
* Block replication tests
*
* Copyright (c) 2016 FUJITSU LIMITED
* Author: Changlong Xie <xiecl.fnst@cn.fujitsu.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or
* later. See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qapi/qmp/qdict.h"
#include "qemu/option.h"
#include "replication.h"
#include "block/block_int.h"
#include "block/qdict.h"
#include "sysemu/block-backend.h"
#define IMG_SIZE (64 * 1024 * 1024)
/* primary */
#define P_ID "primary-id"
static char p_local_disk[] = "/tmp/p_local_disk.XXXXXX";
/* secondary */
#define S_ID "secondary-id"
#define S_LOCAL_DISK_ID "secondary-local-disk-id"
static char s_local_disk[] = "/tmp/s_local_disk.XXXXXX";
static char s_active_disk[] = "/tmp/s_active_disk.XXXXXX";
static char s_hidden_disk[] = "/tmp/s_hidden_disk.XXXXXX";
/* FIXME: steal from blockdev.c */
QemuOptsList qemu_drive_opts = {
.name = "drive",
.head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head),
.desc = {
{ /* end of list */ }
},
};
#define NOT_DONE 0x7fffffff
static void blk_rw_done(void *opaque, int ret)
{
*(int *)opaque = ret;
}
static void test_blk_read(BlockBackend *blk, long pattern,
int64_t pattern_offset, int64_t pattern_count,
int64_t offset, int64_t count,
bool expect_failed)
{
void *pattern_buf = NULL;
QEMUIOVector qiov;
void *cmp_buf = NULL;
int async_ret = NOT_DONE;
if (pattern) {
cmp_buf = g_malloc(pattern_count);
memset(cmp_buf, pattern, pattern_count);
}
pattern_buf = g_malloc(count);
if (pattern) {
memset(pattern_buf, pattern, count);
} else {
memset(pattern_buf, 0x00, count);
}
qemu_iovec_init(&qiov, 1);
qemu_iovec_add(&qiov, pattern_buf, count);
blk_aio_preadv(blk, offset, &qiov, 0, blk_rw_done, &async_ret);
while (async_ret == NOT_DONE) {
main_loop_wait(false);
}
if (expect_failed) {
g_assert(async_ret != 0);
} else {
g_assert(async_ret == 0);
if (pattern) {
g_assert(memcmp(pattern_buf + pattern_offset,
cmp_buf, pattern_count) <= 0);
}
}
g_free(pattern_buf);
g_free(cmp_buf);
qemu_iovec_destroy(&qiov);
}
static void test_blk_write(BlockBackend *blk, long pattern, int64_t offset,
int64_t count, bool expect_failed)
{
void *pattern_buf = NULL;
QEMUIOVector qiov;
int async_ret = NOT_DONE;
pattern_buf = g_malloc(count);
if (pattern) {
memset(pattern_buf, pattern, count);
} else {
memset(pattern_buf, 0x00, count);
}
qemu_iovec_init(&qiov, 1);
qemu_iovec_add(&qiov, pattern_buf, count);
blk_aio_pwritev(blk, offset, &qiov, 0, blk_rw_done, &async_ret);
while (async_ret == NOT_DONE) {
main_loop_wait(false);
}
if (expect_failed) {
g_assert(async_ret != 0);
} else {
g_assert(async_ret == 0);
}
g_free(pattern_buf);
qemu_iovec_destroy(&qiov);
}
/*
* Create a uniquely-named empty temporary file.
*/
static void make_temp(char *template)
{
int fd;
fd = mkstemp(template);
g_assert(fd >= 0);
close(fd);
}
static void prepare_imgs(void)
{
Error *local_err = NULL;
make_temp(p_local_disk);
make_temp(s_local_disk);
make_temp(s_active_disk);
make_temp(s_hidden_disk);
/* Primary */
bdrv_img_create(p_local_disk, "qcow2", NULL, NULL, NULL, IMG_SIZE,
BDRV_O_RDWR, true, &local_err);
g_assert(!local_err);
/* Secondary */
bdrv_img_create(s_local_disk, "qcow2", NULL, NULL, NULL, IMG_SIZE,
BDRV_O_RDWR, true, &local_err);
g_assert(!local_err);
bdrv_img_create(s_active_disk, "qcow2", NULL, NULL, NULL, IMG_SIZE,
BDRV_O_RDWR, true, &local_err);
g_assert(!local_err);
bdrv_img_create(s_hidden_disk, "qcow2", NULL, NULL, NULL, IMG_SIZE,
BDRV_O_RDWR, true, &local_err);
g_assert(!local_err);
}
static void cleanup_imgs(void)
{
/* Primary */
unlink(p_local_disk);
/* Secondary */
unlink(s_local_disk);
unlink(s_active_disk);
unlink(s_hidden_disk);
}
static BlockBackend *start_primary(void)
{
BlockBackend *blk;
QemuOpts *opts;
QDict *qdict;
Error *local_err = NULL;
char *cmdline;
cmdline = g_strdup_printf("driver=replication,mode=primary,node-name=xxx,"
"file.driver=qcow2,file.file.filename=%s,"
"file.file.locking=off"
, p_local_disk);
opts = qemu_opts_parse_noisily(&qemu_drive_opts, cmdline, false);
g_free(cmdline);
qdict = qemu_opts_to_qdict(opts, NULL);
qdict_set_default_str(qdict, BDRV_OPT_CACHE_DIRECT, "off");
qdict_set_default_str(qdict, BDRV_OPT_CACHE_NO_FLUSH, "off");
blk = blk_new_open(NULL, NULL, qdict, BDRV_O_RDWR, &local_err);
g_assert(blk);
g_assert(!local_err);
monitor_add_blk(blk, P_ID, &local_err);
g_assert(!local_err);
qemu_opts_del(opts);
return blk;
}
static void teardown_primary(void)
{
BlockBackend *blk;
/* remove P_ID */
blk = blk_by_name(P_ID);
assert(blk);
monitor_remove_blk(blk);
blk_unref(blk);
}
static void test_primary_read(void)
{
BlockBackend *blk;
blk = start_primary();
/* read from 0 to IMG_SIZE */
test_blk_read(blk, 0, 0, IMG_SIZE, 0, IMG_SIZE, true);
teardown_primary();
}
static void test_primary_write(void)
{
BlockBackend *blk;
blk = start_primary();
/* write from 0 to IMG_SIZE */
test_blk_write(blk, 0, 0, IMG_SIZE, true);
teardown_primary();
}
static void test_primary_start(void)
{
BlockBackend *blk = NULL;
Error *local_err = NULL;
blk = start_primary();
replication_start_all(REPLICATION_MODE_PRIMARY, &local_err);
g_assert(!local_err);
/* read from 0 to IMG_SIZE */
test_blk_read(blk, 0, 0, IMG_SIZE, 0, IMG_SIZE, true);
/* write 0x22 from 0 to IMG_SIZE */
test_blk_write(blk, 0x22, 0, IMG_SIZE, false);
teardown_primary();
}
static void test_primary_stop(void)
{
Error *local_err = NULL;
bool failover = true;
start_primary();
replication_start_all(REPLICATION_MODE_PRIMARY, &local_err);
g_assert(!local_err);
replication_stop_all(failover, &local_err);
g_assert(!local_err);
teardown_primary();
}
static void test_primary_do_checkpoint(void)
{
Error *local_err = NULL;
start_primary();
replication_start_all(REPLICATION_MODE_PRIMARY, &local_err);
g_assert(!local_err);
replication_do_checkpoint_all(&local_err);
g_assert(!local_err);
teardown_primary();
}
static void test_primary_get_error_all(void)
{
Error *local_err = NULL;
start_primary();
replication_start_all(REPLICATION_MODE_PRIMARY, &local_err);
g_assert(!local_err);
replication_get_error_all(&local_err);
g_assert(!local_err);
teardown_primary();
}
static BlockBackend *start_secondary(void)
{
QemuOpts *opts;
QDict *qdict;
BlockBackend *blk;
char *cmdline;
Error *local_err = NULL;
/* add s_local_disk and forge S_LOCAL_DISK_ID */
cmdline = g_strdup_printf("file.filename=%s,driver=qcow2,"
"file.locking=off",
s_local_disk);
opts = qemu_opts_parse_noisily(&qemu_drive_opts, cmdline, false);
g_free(cmdline);
qdict = qemu_opts_to_qdict(opts, NULL);
qdict_set_default_str(qdict, BDRV_OPT_CACHE_DIRECT, "off");
qdict_set_default_str(qdict, BDRV_OPT_CACHE_NO_FLUSH, "off");
blk = blk_new_open(NULL, NULL, qdict, BDRV_O_RDWR, &local_err);
assert(blk);
monitor_add_blk(blk, S_LOCAL_DISK_ID, &local_err);
g_assert(!local_err);
/* format s_local_disk with pattern "0x11" */
test_blk_write(blk, 0x11, 0, IMG_SIZE, false);
qemu_opts_del(opts);
/* add S_(ACTIVE/HIDDEN)_DISK and forge S_ID */
cmdline = g_strdup_printf("driver=replication,mode=secondary,top-id=%s,"
"file.driver=qcow2,file.file.filename=%s,"
"file.file.locking=off,"
"file.backing.driver=qcow2,"
"file.backing.file.filename=%s,"
"file.backing.file.locking=off,"
"file.backing.backing=%s"
, S_ID, s_active_disk, s_hidden_disk
, S_LOCAL_DISK_ID);
opts = qemu_opts_parse_noisily(&qemu_drive_opts, cmdline, false);
g_free(cmdline);
qdict = qemu_opts_to_qdict(opts, NULL);
qdict_set_default_str(qdict, BDRV_OPT_CACHE_DIRECT, "off");
qdict_set_default_str(qdict, BDRV_OPT_CACHE_NO_FLUSH, "off");
blk = blk_new_open(NULL, NULL, qdict, BDRV_O_RDWR, &local_err);
assert(blk);
monitor_add_blk(blk, S_ID, &local_err);
g_assert(!local_err);
qemu_opts_del(opts);
return blk;
}
static void teardown_secondary(void)
{
/* only need to destroy two BBs */
BlockBackend *blk;
/* remove S_LOCAL_DISK_ID */
blk = blk_by_name(S_LOCAL_DISK_ID);
assert(blk);
monitor_remove_blk(blk);
blk_unref(blk);
/* remove S_ID */
blk = blk_by_name(S_ID);
assert(blk);
monitor_remove_blk(blk);
blk_unref(blk);
}
static void test_secondary_read(void)
{
BlockBackend *blk;
blk = start_secondary();
/* read from 0 to IMG_SIZE */
test_blk_read(blk, 0, 0, IMG_SIZE, 0, IMG_SIZE, true);
teardown_secondary();
}
static void test_secondary_write(void)
{
BlockBackend *blk;
blk = start_secondary();
/* write from 0 to IMG_SIZE */
test_blk_write(blk, 0, 0, IMG_SIZE, true);
teardown_secondary();
}
static void test_secondary_start(void)
{
BlockBackend *top_blk, *local_blk;
Error *local_err = NULL;
bool failover = true;
top_blk = start_secondary();
replication_start_all(REPLICATION_MODE_SECONDARY, &local_err);
g_assert(!local_err);
/* read from s_local_disk (0, IMG_SIZE) */
test_blk_read(top_blk, 0x11, 0, IMG_SIZE, 0, IMG_SIZE, false);
/* write 0x22 to s_local_disk (IMG_SIZE / 2, IMG_SIZE) */
local_blk = blk_by_name(S_LOCAL_DISK_ID);
test_blk_write(local_blk, 0x22, IMG_SIZE / 2, IMG_SIZE / 2, false);
/* replication will backup s_local_disk to s_hidden_disk */
test_blk_read(top_blk, 0x11, IMG_SIZE / 2,
IMG_SIZE / 2, 0, IMG_SIZE, false);
/* write 0x33 to s_active_disk (0, IMG_SIZE / 2) */
test_blk_write(top_blk, 0x33, 0, IMG_SIZE / 2, false);
/* read from s_active_disk (0, IMG_SIZE/2) */
test_blk_read(top_blk, 0x33, 0, IMG_SIZE / 2,
0, IMG_SIZE / 2, false);
/* unblock top_bs */
replication_stop_all(failover, &local_err);
g_assert(!local_err);
teardown_secondary();
}
static void test_secondary_stop(void)
{
BlockBackend *top_blk, *local_blk;
Error *local_err = NULL;
bool failover = true;
top_blk = start_secondary();
replication_start_all(REPLICATION_MODE_SECONDARY, &local_err);
g_assert(!local_err);
/* write 0x22 to s_local_disk (IMG_SIZE / 2, IMG_SIZE) */
local_blk = blk_by_name(S_LOCAL_DISK_ID);
test_blk_write(local_blk, 0x22, IMG_SIZE / 2, IMG_SIZE / 2, false);
/* replication will backup s_local_disk to s_hidden_disk */
test_blk_read(top_blk, 0x11, IMG_SIZE / 2,
IMG_SIZE / 2, 0, IMG_SIZE, false);
/* write 0x33 to s_active_disk (0, IMG_SIZE / 2) */
test_blk_write(top_blk, 0x33, 0, IMG_SIZE / 2, false);
/* do active commit */
replication_stop_all(failover, &local_err);
g_assert(!local_err);
/* read from s_local_disk (0, IMG_SIZE / 2) */
test_blk_read(top_blk, 0x33, 0, IMG_SIZE / 2,
0, IMG_SIZE / 2, false);
/* read from s_local_disk (IMG_SIZE / 2, IMG_SIZE) */
test_blk_read(top_blk, 0x22, IMG_SIZE / 2,
IMG_SIZE / 2, 0, IMG_SIZE, false);
teardown_secondary();
}
static void test_secondary_do_checkpoint(void)
{
BlockBackend *top_blk, *local_blk;
Error *local_err = NULL;
bool failover = true;
top_blk = start_secondary();
replication_start_all(REPLICATION_MODE_SECONDARY, &local_err);
g_assert(!local_err);
/* write 0x22 to s_local_disk (IMG_SIZE / 2, IMG_SIZE) */
local_blk = blk_by_name(S_LOCAL_DISK_ID);
test_blk_write(local_blk, 0x22, IMG_SIZE / 2,
IMG_SIZE / 2, false);
/* replication will backup s_local_disk to s_hidden_disk */
test_blk_read(top_blk, 0x11, IMG_SIZE / 2,
IMG_SIZE / 2, 0, IMG_SIZE, false);
replication_do_checkpoint_all(&local_err);
g_assert(!local_err);
/* after checkpoint, read pattern 0x22 from s_local_disk */
test_blk_read(top_blk, 0x22, IMG_SIZE / 2,
IMG_SIZE / 2, 0, IMG_SIZE, false);
/* unblock top_bs */
replication_stop_all(failover, &local_err);
g_assert(!local_err);
teardown_secondary();
}
static void test_secondary_get_error_all(void)
{
Error *local_err = NULL;
bool failover = true;
start_secondary();
replication_start_all(REPLICATION_MODE_SECONDARY, &local_err);
g_assert(!local_err);
replication_get_error_all(&local_err);
g_assert(!local_err);
/* unblock top_bs */
replication_stop_all(failover, &local_err);
g_assert(!local_err);
teardown_secondary();
}
static void sigabrt_handler(int signo)
{
cleanup_imgs();
}
static void setup_sigabrt_handler(void)
{
struct sigaction sigact;
sigact = (struct sigaction) {
.sa_handler = sigabrt_handler,
.sa_flags = SA_RESETHAND,
};
sigemptyset(&sigact.sa_mask);
sigaction(SIGABRT, &sigact, NULL);
}
int main(int argc, char **argv)
{
int ret;
qemu_init_main_loop(&error_fatal);
bdrv_init();
g_test_init(&argc, &argv, NULL);
setup_sigabrt_handler();
prepare_imgs();
/* Primary */
g_test_add_func("/replication/primary/read", test_primary_read);
g_test_add_func("/replication/primary/write", test_primary_write);
g_test_add_func("/replication/primary/start", test_primary_start);
g_test_add_func("/replication/primary/stop", test_primary_stop);
g_test_add_func("/replication/primary/do_checkpoint",
test_primary_do_checkpoint);
g_test_add_func("/replication/primary/get_error_all",
test_primary_get_error_all);
/* Secondary */
g_test_add_func("/replication/secondary/read", test_secondary_read);
g_test_add_func("/replication/secondary/write", test_secondary_write);
g_test_add_func("/replication/secondary/start", test_secondary_start);
g_test_add_func("/replication/secondary/stop", test_secondary_stop);
g_test_add_func("/replication/secondary/do_checkpoint",
test_secondary_do_checkpoint);
g_test_add_func("/replication/secondary/get_error_all",
test_secondary_get_error_all);
ret = g_test_run();
cleanup_imgs();
return ret;
}
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