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bh=2sG9YOGinTBqaVO3rdKf22gmGfh8tPzqmsvDWpjg9ZU=; b=KIqih6GHfx0X4O4cjAHtaIOur0tJRhCeRK10CA4MAS/fgsLu4F1qVkvZod3OxzmKmPFcW6 jMj0g9HaYvrxi4hN43kMurWcUxHNMNQVBhBL5W15oD+tvo2BAeMCozNYyurKbk+xKzR+qI 1xHhgaAqE4HooZ+tbK+EUg8uKN3+qxs= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1718992501; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=2sG9YOGinTBqaVO3rdKf22gmGfh8tPzqmsvDWpjg9ZU=; b=4AjDnz1jh7fd4q3J0Rh5n5H8ZQiuGA/E2Zj9QmDZrsR/QyVpUWI87hMceXODrKtQfmrlQf lEUdgwhKnSoep6Ag== From: Fabiano Rosas To: qemu-devel@nongnu.org Cc: Peter Xu , Richard Henderson Subject: [PULL 13/28] tests/qtest/migration: Add tests for file migration with direct-io Date: Fri, 21 Jun 2024 14:54:19 -0300 Message-Id: <20240621175434.31180-14-farosas@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20240621175434.31180-1-farosas@suse.de> References: <20240621175434.31180-1-farosas@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -2.80 X-Spamd-Result: default: False [-2.80 / 50.00]; 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charset="utf-8" The tests are only allowed to run in systems that know about the O_DIRECT flag and in filesystems which support it. Note: this also brings back migrate_set_parameter_bool() which went away when we removed the compression tests. I copied it verbatim. Reviewed-by: Peter Xu Signed-off-by: Fabiano Rosas --- tests/qtest/migration-helpers.c | 44 +++++++++++++++++++++++ tests/qtest/migration-helpers.h | 8 +++++ tests/qtest/migration-test.c | 62 +++++++++++++++++++++++++++++++++ 3 files changed, 114 insertions(+) diff --git a/tests/qtest/migration-helpers.c b/tests/qtest/migration-helper= s.c index ce6d6615b5..0ac49ceb54 100644 --- a/tests/qtest/migration-helpers.c +++ b/tests/qtest/migration-helpers.c @@ -18,6 +18,7 @@ #include "qapi/error.h" #include "qapi/qmp/qlist.h" #include "qemu/cutils.h" +#include "qemu/memalign.h" =20 #include "migration-helpers.h" =20 @@ -473,3 +474,46 @@ void migration_test_add(const char *path, void (*fn)(v= oid)) qtest_add_data_func_full(path, test, migration_test_wrapper, migration_test_destroy); } + +#ifdef O_DIRECT +/* + * Probe for O_DIRECT support on the filesystem. Since this is used + * for tests, be conservative, if anything fails, assume it's + * unsupported. + */ +bool probe_o_direct_support(const char *tmpfs) +{ + g_autofree char *filename =3D g_strdup_printf("%s/probe-o-direct", tmp= fs); + int fd, flags =3D O_CREAT | O_RDWR | O_TRUNC | O_DIRECT; + void *buf; + ssize_t ret, len; + uint64_t offset; + + fd =3D open(filename, flags, 0660); + if (fd < 0) { + unlink(filename); + return false; + } + + /* + * Using 1MB alignment as conservative choice to satisfy any + * plausible architecture default page size, and/or filesystem + * alignment restrictions. + */ + len =3D 0x100000; + offset =3D 0x100000; + + buf =3D qemu_try_memalign(len, len); + g_assert(buf); + + ret =3D pwrite(fd, buf, len, offset); + unlink(filename); + g_free(buf); + + if (ret < 0) { + return false; + } + + return true; +} +#endif diff --git a/tests/qtest/migration-helpers.h b/tests/qtest/migration-helper= s.h index 1339835698..50095fca4a 100644 --- a/tests/qtest/migration-helpers.h +++ b/tests/qtest/migration-helpers.h @@ -54,5 +54,13 @@ char *find_common_machine_version(const char *mtype, con= st char *var1, const char *var2); char *resolve_machine_version(const char *alias, const char *var1, const char *var2); +#ifdef O_DIRECT +bool probe_o_direct_support(const char *tmpfs); +#else +static inline bool probe_o_direct_support(const char *tmpfs) +{ + return false; +} +#endif void migration_test_add(const char *path, void (*fn)(void)); #endif /* MIGRATION_HELPERS_H */ diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c index eb4d5948e0..5c41d1b70e 100644 --- a/tests/qtest/migration-test.c +++ b/tests/qtest/migration-test.c @@ -408,6 +408,38 @@ static void migrate_set_parameter_str(QTestState *who,= const char *parameter, migrate_check_parameter_str(who, parameter, value); } =20 +static long long migrate_get_parameter_bool(QTestState *who, + const char *parameter) +{ + QDict *rsp; + int result; + + rsp =3D qtest_qmp_assert_success_ref( + who, "{ 'execute': 'query-migrate-parameters' }"); + result =3D qdict_get_bool(rsp, parameter); + qobject_unref(rsp); + return !!result; +} + +static void migrate_check_parameter_bool(QTestState *who, const char *para= meter, + int value) +{ + int result; + + result =3D migrate_get_parameter_bool(who, parameter); + g_assert_cmpint(result, =3D=3D, value); +} + +static void migrate_set_parameter_bool(QTestState *who, const char *parame= ter, + int value) +{ + qtest_qmp_assert_success(who, + "{ 'execute': 'migrate-set-parameters'," + "'arguments': { %s: %i } }", + parameter, value); + migrate_check_parameter_bool(who, parameter, value); +} + static void migrate_ensure_non_converge(QTestState *who) { /* Can't converge with 1ms downtime + 3 mbs bandwidth limit */ @@ -2235,6 +2267,33 @@ static void test_multifd_file_mapped_ram(void) test_file_common(&args, true); } =20 +static void *multifd_mapped_ram_dio_start(QTestState *from, QTestState *to) +{ + migrate_multifd_mapped_ram_start(from, to); + + migrate_set_parameter_bool(from, "direct-io", true); + migrate_set_parameter_bool(to, "direct-io", true); + + return NULL; +} + +static void test_multifd_file_mapped_ram_dio(void) +{ + g_autofree char *uri =3D g_strdup_printf("file:%s/%s", tmpfs, + FILE_TEST_FILENAME); + MigrateCommon args =3D { + .connect_uri =3D uri, + .listen_uri =3D "defer", + .start_hook =3D multifd_mapped_ram_dio_start, + }; + + if (!probe_o_direct_support(tmpfs)) { + g_test_skip("Filesystem does not support O_DIRECT"); + return; + } + + test_file_common(&args, true); +} =20 static void test_precopy_tcp_plain(void) { @@ -3674,6 +3733,9 @@ int main(int argc, char **argv) migration_test_add("/migration/multifd/file/mapped-ram/live", test_multifd_file_mapped_ram_live); =20 + migration_test_add("/migration/multifd/file/mapped-ram/dio", + test_multifd_file_mapped_ram_dio); + #ifdef CONFIG_GNUTLS migration_test_add("/migration/precopy/unix/tls/psk", test_precopy_unix_tls_psk); --=20 2.35.3