From nobody Wed Nov 27 04:48:43 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=suse.de Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1701117127641579.9294293982801; Mon, 27 Nov 2023 12:32:07 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r7iCW-0003bm-BV; Mon, 27 Nov 2023 15:27:28 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r7iCV-0003b9-2Z for qemu-devel@nongnu.org; Mon, 27 Nov 2023 15:27:27 -0500 Received: from smtp-out1.suse.de ([2a07:de40:b251:101:10:150:64:1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1r7iCS-0002tH-BJ for qemu-devel@nongnu.org; Mon, 27 Nov 2023 15:27:26 -0500 Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 1A4C221B4D; Mon, 27 Nov 2023 20:27:23 +0000 (UTC) Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 47DE11379A; Mon, 27 Nov 2023 20:27:20 +0000 (UTC) Received: from dovecot-director2.suse.de ([10.150.64.162]) by imap1.dmz-prg2.suse.org with ESMTPSA id GIXmA6j7ZGVfIQAAD6G6ig (envelope-from ); Mon, 27 Nov 2023 20:27:20 +0000 From: Fabiano Rosas To: qemu-devel@nongnu.org Cc: berrange@redhat.com, armbru@redhat.com, Juan Quintela , Peter Xu , Leonardo Bras , Claudio Fontana , Thomas Huth , Laurent Vivier , Paolo Bonzini Subject: [RFC PATCH v3 24/30] tests/qtest: Add a test for migration with direct-io and multifd Date: Mon, 27 Nov 2023 17:26:06 -0300 Message-Id: <20231127202612.23012-25-farosas@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20231127202612.23012-1-farosas@suse.de> References: <20231127202612.23012-1-farosas@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spamd-Bar: +++++++ Authentication-Results: smtp-out1.suse.de; dkim=none; dmarc=fail reason="No valid SPF, No valid DKIM" header.from=suse.de (policy=none); spf=softfail (smtp-out1.suse.de: 2a07:de40:b281:104:10:150:64:97 is neither permitted nor denied by domain of farosas@suse.de) smtp.mailfrom=farosas@suse.de X-Rspamd-Server: rspamd2 X-Spamd-Result: default: False [7.80 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_MISSING_CHARSET(2.50)[]; MIME_GOOD(-0.10)[text/plain]; BROKEN_CONTENT_TYPE(1.50)[]; R_SPF_SOFTFAIL(4.60)[~all:c]; NEURAL_HAM_LONG(-0.99)[-0.988]; RCVD_COUNT_THREE(0.00)[3]; MX_GOOD(-0.01)[]; RCPT_COUNT_SEVEN(0.00)[10]; MID_CONTAINS_FROM(1.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:email]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(2.20)[]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_ALL(0.00)[]; BAYES_HAM(-3.00)[100.00%]; DMARC_POLICY_SOFTFAIL(0.10)[suse.de : No valid SPF, No valid DKIM,none] X-Spam-Score: 7.80 X-Rspamd-Queue-Id: 1A4C221B4D Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a07:de40:b251:101:10:150:64:1; envelope-from=farosas@suse.de; helo=smtp-out1.suse.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1701117127954000001 Content-Type: text/plain; charset="utf-8" The test is only allowed to run in systems that know and in filesystems which support O_DIRECT. Signed-off-by: Fabiano Rosas --- - added ifdefs for O_DIRECT and a probing function --- tests/qtest/migration-helpers.c | 39 +++++++++++++++++++++++++++++++++ tests/qtest/migration-helpers.h | 1 + tests/qtest/migration-test.c | 35 +++++++++++++++++++++++++++++ 3 files changed, 75 insertions(+) diff --git a/tests/qtest/migration-helpers.c b/tests/qtest/migration-helper= s.c index 24fb7b3525..02b92f0cb6 100644 --- a/tests/qtest/migration-helpers.c +++ b/tests/qtest/migration-helpers.c @@ -292,3 +292,42 @@ char *resolve_machine_version(const char *alias, const= char *var1, =20 return find_common_machine_version(machine_name, var1, var2); } + +#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_DIRECT; + void *buf; + ssize_t ret, len; + uint64_t offset; + + fd =3D open(filename, flags, 0660); + if (fd < 0) { + unlink(filename); + return false; + } + + /* + * Assuming 4k should be enough to satisfy O_DIRECT alignment + * requirements. The migration code uses 1M to be conservative. + */ + len =3D 0x100000; + offset =3D 0x100000; + + buf =3D g_malloc0(len); + ret =3D pwrite(fd, buf, len, offset); + unlink(filename); + + if (ret < 0) { + return false; + } + + return true; +} +#endif diff --git a/tests/qtest/migration-helpers.h b/tests/qtest/migration-helper= s.h index e31dc85cc7..15df009d35 100644 --- a/tests/qtest/migration-helpers.h +++ b/tests/qtest/migration-helpers.h @@ -47,4 +47,5 @@ char *find_common_machine_version(const char *mtype, cons= t char *var1, const char *var2); char *resolve_machine_version(const char *alias, const char *var1, const char *var2); +bool probe_o_direct_support(const char *tmpfs); #endif /* MIGRATION_HELPERS_H */ diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c index 5c5725687c..192b8ec993 100644 --- a/tests/qtest/migration-test.c +++ b/tests/qtest/migration-test.c @@ -2222,6 +2222,36 @@ static void test_multifd_file_fixed_ram(void) test_file_common(&args, true); } =20 +#ifdef O_DIRECT +static void *migrate_multifd_fixed_ram_dio_start(QTestState *from, + QTestState *to) +{ + migrate_multifd_fixed_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_fixed_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 migrate_multifd_fixed_ram_dio_start, + }; + + if (!probe_o_direct_support(tmpfs)) { + g_test_skip("Filesystem does not support O_DIRECT"); + return; + } + + test_file_common(&args, true); +} +#endif =20 static void test_precopy_tcp_plain(void) { @@ -3476,6 +3506,11 @@ int main(int argc, char **argv) qtest_add_func("/migration/multifd/file/fixed-ram/live", test_multifd_file_fixed_ram_live); =20 +#ifdef O_DIRECT + qtest_add_func("/migration/multifd/file/fixed-ram/dio", + test_multifd_file_fixed_ram_dio); +#endif + #ifdef CONFIG_GNUTLS qtest_add_func("/migration/precopy/unix/tls/psk", test_precopy_unix_tls_psk); --=20 2.35.3