From nobody Mon Feb 9 17:05:02 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of redhat.com designates 170.10.133.124 as permitted sender) client-ip=170.10.133.124; envelope-from=libvir-list-bounces@redhat.com; helo=us-smtp-delivery-124.mimecast.com; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; dmarc=fail(p=none dis=none) header.from=suse.de Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by mx.zohomail.com with SMTPS id 1652543651479835.5221181126129; Sat, 14 May 2022 08:54:11 -0700 (PDT) Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-16-MgwcABLzPwSk7uuElf3h4A-1; Sat, 14 May 2022 11:53:50 -0400 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 17AB9833972; Sat, 14 May 2022 15:53:41 +0000 (UTC) Received: from mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (unknown [10.30.29.100]) by smtp.corp.redhat.com (Postfix) with ESMTP id 01FE041652B; Sat, 14 May 2022 15:53:41 +0000 (UTC) Received: from mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (localhost [IPv6:::1]) by mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (Postfix) with ESMTP id 5B1DD18FC600; Sat, 14 May 2022 15:53:32 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) by mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (Postfix) with ESMTP id 50D24196A5C3 for ; Sat, 14 May 2022 15:53:25 +0000 (UTC) Received: by smtp.corp.redhat.com (Postfix) id 1BFF69D61; Sat, 14 May 2022 15:53:25 +0000 (UTC) Received: from mimecast-mx02.redhat.com (mimecast10.extmail.prod.ext.rdu2.redhat.com [10.11.55.26]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 16C5B815A for ; Sat, 14 May 2022 15:53:23 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [207.211.31.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 9E3AF1C0515B for ; Sat, 14 May 2022 15:53:23 +0000 (UTC) Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-53-05-tG8zjP92Ad711tm0UGg-1; Sat, 14 May 2022 11:53:21 -0400 Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 56B3421D53; Sat, 14 May 2022 15:53:20 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 210F413ADC; Sat, 14 May 2022 15:53:20 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id OMZuBnDQf2J2ZwAAMHmgww (envelope-from ); Sat, 14 May 2022 15:53:20 +0000 X-MC-Unique: MgwcABLzPwSk7uuElf3h4A-1 X-Original-To: libvir-list@listman.corp.redhat.com X-MC-Unique: 05-tG8zjP92Ad711tm0UGg-1 From: Claudio Fontana To: =?UTF-8?q?Daniel=20P=20=2E=20Berrang=C3=A9?= Subject: [libvirt RFCv9 15/31] qemu: saveimage: wire up saveimage code with the multifd helper Date: Sat, 14 May 2022 17:52:57 +0200 Message-Id: <20220514155313.9615-16-cfontana@suse.de> In-Reply-To: <20220514155313.9615-1-cfontana@suse.de> References: <20220514155313.9615-1-cfontana@suse.de> MIME-Version: 1.0 X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: libvir-list@redhat.com, "Dr . David Alan Gilbert" , Claudio Fontana Errors-To: libvir-list-bounces@redhat.com Sender: "libvir-list" X-Scanned-By: MIMEDefang 2.85 on 10.11.54.9 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=libvir-list-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-ZM-MESSAGEID: 1652543652735100029 Content-Type: text/plain; charset="utf-8"; x-default="true" use the multifd helper and the new virQEMUSaveFd APIs for multifd. Signed-off-by: Claudio Fontana --- src/qemu/qemu_saveimage.c | 42 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 39 insertions(+), 3 deletions(-) diff --git a/src/qemu/qemu_saveimage.c b/src/qemu/qemu_saveimage.c index 9fe51b6f13..2b56214f90 100644 --- a/src/qemu/qemu_saveimage.c +++ b/src/qemu/qemu_saveimage.c @@ -17,6 +17,7 @@ */ =20 #include +#include =20 #include "qemu_saveimage.h" #include "qemu_domain.h" @@ -585,6 +586,7 @@ qemuSaveImageCreate(virQEMUDriver *driver, { g_autoptr(virQEMUDriverConfig) cfg =3D virQEMUDriverGetConfig(driver); virQEMUSaveFd saveFd =3D QEMU_SAVEFD_INVALID; + virQEMUSaveFd *multiFd =3D NULL; unsigned int oflags =3D O_WRONLY | O_TRUNC | O_CREAT; int ret =3D -1; =20 @@ -604,9 +606,42 @@ qemuSaveImageCreate(virQEMUDriver *driver, if (virQEMUSaveDataWrite(data, saveFd.fd, saveFd.path) < 0) goto cleanup; =20 - /* Perform the migration */ - if (qemuMigrationSrcToFile(driver, vm, saveFd.fd, compressor, asyncJob= ) < 0) - goto cleanup; + if (flags & VIR_DOMAIN_SAVE_PARALLEL) { + g_autoptr(virCommand) cmd =3D NULL; + g_autofree char *helper_path =3D NULL; + qemuDomainObjPrivate *priv =3D vm->privateData; + g_autofree char *sun_path =3D g_strdup_printf("%s/save-multifd.soc= k", priv->libDir); + char buf[1]; + int helper_out =3D -1; + if (!(helper_path =3D virFileFindResource("libvirt_multifd_helper", + abs_top_builddir "/src", + LIBEXECDIR))) + goto cleanup; + cmd =3D virCommandNewArgList(helper_path, sun_path, NULL); + virCommandAddArgFormat(cmd, "%d", nconn); + virCommandAddArgFormat(cmd, "%d", saveFd.fd); + virCommandPassFD(cmd, saveFd.fd, 0); + virCommandSetOutputFD(cmd, &helper_out); /* should create pipe aut= omagically */ + + /* Perform parallel multifd migration to files (main fd + channels= ) */ + if (!(multiFd =3D qemuSaveImageCreateMultiFd(driver, vm, cmd, save= Fd.path, oflags, cfg, nconn))) + goto cleanup; + if (virCommandRunAsync(cmd, NULL) < 0) + goto cleanup; + if (saferead(helper_out, &buf, 1) !=3D 1 || buf[0] !=3D 'R') + goto cleanup; + if (chown(sun_path, cfg->user, cfg->group) < 0) + goto cleanup; + /* still using single fd migration for now */ + if (qemuMigrationSrcToFile(driver, vm, saveFd.fd, compressor, asyn= cJob) < 0) + goto cleanup; + if (qemuSaveImageCloseMultiFd(multiFd, nconn, vm) < 0) + goto cleanup; + } else { + /* Perform non-parallel migration to file */ + if (qemuMigrationSrcToFile(driver, vm, saveFd.fd, compressor, asyn= cJob) < 0) + goto cleanup; + } =20 if (virQEMUSaveFdClose(&saveFd, vm) < 0) goto cleanup; @@ -625,6 +660,7 @@ qemuSaveImageCreate(virQEMUDriver *driver, ret =3D 0; =20 cleanup: + ret =3D qemuSaveImageFreeMultiFd(multiFd, vm, nconn, ret); ret =3D virQEMUSaveFdFini(&saveFd, vm, ret); return ret; } --=20 2.35.3