From nobody Sun Feb 8 14:42:02 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; dkim=pass; spf=pass (zohomail.com: domain of redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1693493722; cv=none; d=zohomail.com; s=zohoarc; b=Gy/PGX/oymewT5m21VLtBc3EyKwZuo8+9L/kr5kWYcgxXVEwehGTUWKWfNCd8y8unZzmlTnM8096OiljtWSn5uudAiFIiSTzubzBdwmKfkFgFxslm0YksFN+1djHc2dbscHyFH3YgBR6xdIHEWny7sqfyxXooVhO3xJbp23KpW0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1693493722; h=Content-Type:Content-Transfer-Encoding:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=QkloTEl6OXSetX44pGPmMarM9rgfZ9wUQAo/iERYur4=; b=cuwRW3hLaUDpt4W4A+vTLGYVfxJ4JmuRvfuPr19M5nHbxhYHG5VmNOglrQMIXVzGp044pVpVvWJv+elvzLzt1pECu/uacj87Sfelkk0m9spMCij7t0te8Ot51dADalNafXpR9/ir4ALtyYw8TU9Vf3GXXO8ayvW7rAJ7eilKpRM= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; dmarc=pass header.from= (p=none dis=none) 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 16934937221101004.41446028314; Thu, 31 Aug 2023 07:55:22 -0700 (PDT) Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-374-8pu0I8kCPIyKeE9YRb1Cgg-1; Thu, 31 Aug 2023 10:55:18 -0400 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 0ABAB1C06EF9; Thu, 31 Aug 2023 14:55:16 +0000 (UTC) Received: from mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com [10.30.29.100]) by smtp.corp.redhat.com (Postfix) with ESMTP id EA4CE4021C9; Thu, 31 Aug 2023 14:55:15 +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 422531946A49; Thu, 31 Aug 2023 14:55:14 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) by mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (Postfix) with ESMTP id 395171946587 for ; Thu, 31 Aug 2023 14:55:13 +0000 (UTC) Received: by smtp.corp.redhat.com (Postfix) id 1A5E040C2070; Thu, 31 Aug 2023 14:55:13 +0000 (UTC) Received: from localhost.localdomain (unknown [10.45.224.22]) by smtp.corp.redhat.com (Postfix) with ESMTP id 91D7E40C2063 for ; Thu, 31 Aug 2023 14:55:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1693493721; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post; bh=QkloTEl6OXSetX44pGPmMarM9rgfZ9wUQAo/iERYur4=; b=aBt6dIJeqtH7og9dReZ/6NPKudCXNnN/HQ240Yvifq/C29i+QI915RsPG+SGTJWz7qiwr6 lbZy04OYszBnAGmVPrnZ3+3HT81o0EnjNKMrMN+zqPMcthmJ9coI83m4rarfNVciJnjkUl lXZcqRm26wRU+dd1td+VtnvDxpMUDmc= X-MC-Unique: 8pu0I8kCPIyKeE9YRb1Cgg-1 X-Original-To: libvir-list@listman.corp.redhat.com From: Pavel Hrdina To: libvir-list@redhat.com Subject: [libvirt PATCH 1/7] qemu_saveimage: extract starting process to qemuSaveImageStartProcess Date: Thu, 31 Aug 2023 16:55:00 +0200 Message-ID: In-Reply-To: References: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 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: , Errors-To: libvir-list-bounces@redhat.com Sender: "libvir-list" X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1693493724339100001 Content-Type: text/plain; charset="utf-8"; x-default="true" Part of qemuSaveImageStartVM() function will be used when reverting external snapshots. To avoid duplicating code and logic extract the shared bits into separate function. Signed-off-by: Pavel Hrdina Reviewed-by: Peter Krempa --- src/qemu/qemu_saveimage.c | 103 ++++++++++++++++++++++++++------------ src/qemu/qemu_saveimage.h | 12 +++++ 2 files changed, 83 insertions(+), 32 deletions(-) diff --git a/src/qemu/qemu_saveimage.c b/src/qemu/qemu_saveimage.c index 41310d6a9a..86f31d1820 100644 --- a/src/qemu/qemu_saveimage.c +++ b/src/qemu/qemu_saveimage.c @@ -565,42 +565,46 @@ qemuSaveImageOpen(virQEMUDriver *driver, return ret; } =20 +/** + * qemuSaveImageStartProcess: + * @conn: connection object + * @driver: qemu driver object + * @vm: domain object + * @fd: FD pointer of memory state file + * @path: path to memory state file + * @header: header from memory state file + * @cookie: cookie from memory state file + * @asyncJob: type of asynchronous job + * @start_flags: flags to start QEMU process with + * @started: boolean to store if QEMU process was started + * + * Start VM with existing memory state. Make sure that the stored memory s= tate + * is correctly decompressed so it can be loaded by QEMU process. + * + * Returns 0 on success, -1 on error. + */ int -qemuSaveImageStartVM(virConnectPtr conn, - virQEMUDriver *driver, - virDomainObj *vm, - int *fd, - virQEMUSaveData *data, - const char *path, - bool start_paused, - bool reset_nvram, - virDomainAsyncJob asyncJob) +qemuSaveImageStartProcess(virConnectPtr conn, + virQEMUDriver *driver, + virDomainObj *vm, + int *fd, + const char *path, + virQEMUSaveHeader *header, + qemuDomainSaveCookie *cookie, + virDomainAsyncJob asyncJob, + unsigned int start_flags, + bool *started) { qemuDomainObjPrivate *priv =3D vm->privateData; - int ret =3D -1; - bool started =3D false; - virObjectEvent *event; VIR_AUTOCLOSE intermediatefd =3D -1; g_autoptr(virCommand) cmd =3D NULL; g_autofree char *errbuf =3D NULL; - g_autoptr(virQEMUDriverConfig) cfg =3D virQEMUDriverGetConfig(driver); - virQEMUSaveHeader *header =3D &data->header; - g_autoptr(qemuDomainSaveCookie) cookie =3D NULL; int rc =3D 0; - unsigned int start_flags =3D VIR_QEMU_PROCESS_START_PAUSED | - VIR_QEMU_PROCESS_START_GEN_VMID; - - if (reset_nvram) - start_flags |=3D VIR_QEMU_PROCESS_START_RESET_NVRAM; - - if (virSaveCookieParseString(data->cookie, (virObject **)&cookie, - virDomainXMLOptionGetSaveCookie(driver->x= mlopt)) < 0) - goto cleanup; =20 if ((header->version =3D=3D 2) && (header->compressed !=3D QEMU_SAVE_FORMAT_RAW)) { if (!(cmd =3D qemuSaveImageGetCompressionCommand(header->compresse= d))) - goto cleanup; + return -1; =20 intermediatefd =3D *fd; *fd =3D -1; @@ -613,7 +617,7 @@ qemuSaveImageStartVM(virConnectPtr conn, if (virCommandRunAsync(cmd, NULL) < 0) { *fd =3D intermediatefd; intermediatefd =3D -1; - goto cleanup; + return -1; } } =20 @@ -622,7 +626,7 @@ qemuSaveImageStartVM(virConnectPtr conn, */ if (cookie && qemuDomainFixupCPUs(vm, &cookie->cpu) < 0) - goto cleanup; + return -1; =20 if (cookie && !cookie->slirpHelper) priv->disableSlirp =3D true; @@ -631,12 +635,12 @@ qemuSaveImageStartVM(virConnectPtr conn, asyncJob, "stdio", *fd, path, NULL, VIR_NETDEV_VPORT_PROFILE_OP_RESTORE, start_flags) =3D=3D 0) - started =3D true; + *started =3D true; =20 if (intermediatefd !=3D -1) { virErrorPtr orig_err =3D NULL; =20 - if (!started) { + if (!*started) { /* if there was an error setting up qemu, the intermediate * process will wait forever to write to stdout, so we * must manually kill it and ignore any error related to @@ -656,15 +660,50 @@ qemuSaveImageStartVM(virConnectPtr conn, rc =3D -1; } =20 - virDomainAuditStart(vm, "restored", started); - if (!started || rc < 0) - goto cleanup; + virDomainAuditStart(vm, "restored", *started); + if (!*started || rc < 0) + return -1; =20 /* qemuProcessStart doesn't unset the qemu error reporting infrastruct= ure * in case of migration (which is used in this case) so we need to res= et it * so that the handle to virtlogd is not held open unnecessarily */ qemuMonitorSetDomainLog(qemuDomainGetMonitor(vm), NULL, NULL, NULL); =20 + return 0; +} + +int +qemuSaveImageStartVM(virConnectPtr conn, + virQEMUDriver *driver, + virDomainObj *vm, + int *fd, + virQEMUSaveData *data, + const char *path, + bool start_paused, + bool reset_nvram, + virDomainAsyncJob asyncJob) +{ + int ret =3D -1; + bool started =3D false; + virObjectEvent *event; + g_autoptr(virQEMUDriverConfig) cfg =3D virQEMUDriverGetConfig(driver); + virQEMUSaveHeader *header =3D &data->header; + g_autoptr(qemuDomainSaveCookie) cookie =3D NULL; + unsigned int start_flags =3D VIR_QEMU_PROCESS_START_PAUSED | + VIR_QEMU_PROCESS_START_GEN_VMID; + + if (reset_nvram) + start_flags |=3D VIR_QEMU_PROCESS_START_RESET_NVRAM; + + if (virSaveCookieParseString(data->cookie, (virObject **)&cookie, + virDomainXMLOptionGetSaveCookie(driver->x= mlopt)) < 0) + goto cleanup; + + if (qemuSaveImageStartProcess(conn, driver, vm, fd, path, header, cook= ie, + asyncJob, start_flags, &started) < 0) { + goto cleanup; + } + event =3D virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_STARTED, VIR_DOMAIN_EVENT_STARTED_RESTORED); diff --git a/src/qemu/qemu_saveimage.h b/src/qemu/qemu_saveimage.h index 30cf4b1ee0..af30b7f2ec 100644 --- a/src/qemu/qemu_saveimage.h +++ b/src/qemu/qemu_saveimage.h @@ -57,6 +57,18 @@ qemuSaveImageUpdateDef(virQEMUDriver *driver, virDomainDef *def, const char *newxml); =20 +int +qemuSaveImageStartProcess(virConnectPtr conn, + virQEMUDriver *driver, + virDomainObj *vm, + int *fd, + const char *path, + virQEMUSaveHeader *header, + qemuDomainSaveCookie *cookie, + virDomainAsyncJob asyncJob, + unsigned int start_flags, + bool *started); + int qemuSaveImageStartVM(virConnectPtr conn, virQEMUDriver *driver, --=20 2.41.0