From patchwork Tue Sep 15 11:35:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= X-Patchwork-Id: 305406 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99607C433E2 for ; Tue, 15 Sep 2020 11:40:23 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2C39B20872 for ; Tue, 15 Sep 2020 11:40:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="hwWcN146" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2C39B20872 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:35614 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kI9Js-0006md-IT for qemu-devel@archiver.kernel.org; Tue, 15 Sep 2020 07:40:20 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35820) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kI9Fo-0001PG-EC for qemu-devel@nongnu.org; Tue, 15 Sep 2020 07:36:10 -0400 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:44607 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kI9Fk-0002vj-WF for qemu-devel@nongnu.org; Tue, 15 Sep 2020 07:36:07 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1600169763; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=P9iiBhaZ4EZPuVwfELWDmms0fDtNc9iEMg7v0gMULxA=; b=hwWcN146UGpVwVVWcHywWRCrND8scK2chIDhBSFMsvcRaxP2ojfFYLae400rJBm2KXzBi6 sJedHh0XjtyG/+beATjn7xR0GjmqElvXnnmB7bUfHb2MlmEbzpZ1otC9SU0PbY2Nt7AWyo Qw7Ayv3926J2A8xa4cbfPmaVM36ZNFA= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-594-b5YBrXi-PgaUhQ0h3DQBhw-1; Tue, 15 Sep 2020 07:36:02 -0400 X-MC-Unique: b5YBrXi-PgaUhQ0h3DQBhw-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2622B1005E64; Tue, 15 Sep 2020 11:36:01 +0000 (UTC) Received: from localhost.localdomain.com (unknown [10.36.110.68]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4E0AA747B0; Tue, 15 Sep 2020 11:35:57 +0000 (UTC) From: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH v4 6/9] migration: wire up support for snapshot device selection Date: Tue, 15 Sep 2020 12:35:20 +0100 Message-Id: <20200915113523.2520317-7-berrange@redhat.com> In-Reply-To: <20200915113523.2520317-1-berrange@redhat.com> References: <20200915113523.2520317-1-berrange@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=berrange@redhat.com X-Mimecast-Spam-Score: 0.003 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=205.139.110.61; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/15 03:21:13 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -50 X-Spam_score: -5.1 X-Spam_bar: ----- X-Spam_report: (-5.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-2.999, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Peter Krempa , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , "Denis V. Lunev" , qemu-block@nongnu.org, Juan Quintela , "Dr. David Alan Gilbert" , Markus Armbruster , Pavel Dovgalyuk , Paolo Bonzini , Max Reitz , John Snow Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Modify load_snapshot/save_snapshot to accept the device list and vmstate node name parameters previously added to the block layer. Signed-off-by: Daniel P. Berrangé Reviewed-by: Dr. David Alan Gilbert --- include/migration/snapshot.h | 12 ++++++++++-- migration/savevm.c | 24 ++++++++++++++---------- monitor/hmp-cmds.c | 4 ++-- replay/replay-snapshot.c | 4 ++-- softmmu/vl.c | 2 +- 5 files changed, 29 insertions(+), 17 deletions(-) diff --git a/include/migration/snapshot.h b/include/migration/snapshot.h index d7db1174ef..b2c72e0a1b 100644 --- a/include/migration/snapshot.h +++ b/include/migration/snapshot.h @@ -15,7 +15,15 @@ #ifndef QEMU_MIGRATION_SNAPSHOT_H #define QEMU_MIGRATION_SNAPSHOT_H -int save_snapshot(const char *name, bool overwrite, Error **errp); -int load_snapshot(const char *name, Error **errp); +#include "qapi/qapi-builtin-types.h" + +int save_snapshot(const char *name, bool overwrite, + const char *vmstate, + bool has_devices, strList *devices, + Error **errp); +int load_snapshot(const char *name, + const char *vmstate, + bool has_devices, strList *devices, + Error **errp); #endif diff --git a/migration/savevm.c b/migration/savevm.c index 2025e3e579..b3d2ce7045 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -43,6 +43,8 @@ #include "qapi/error.h" #include "qapi/qapi-commands-migration.h" #include "qapi/qapi-commands-misc.h" +#include "qapi/clone-visitor.h" +#include "qapi/qapi-builtin-visit.h" #include "qapi/qmp/qerror.h" #include "qemu/error-report.h" #include "sysemu/cpus.h" @@ -2658,7 +2660,8 @@ int qemu_load_device_state(QEMUFile *f) return 0; } -int save_snapshot(const char *name, bool overwrite, Error **errp) +int save_snapshot(const char *name, bool overwrite, const char *vmstate, + bool has_devices, strList *devices, Error **errp) { BlockDriverState *bs; QEMUSnapshotInfo sn1, *sn = &sn1, old_sn1, *old_sn = &old_sn1; @@ -2680,18 +2683,18 @@ int save_snapshot(const char *name, bool overwrite, Error **errp) return ret; } - if (!bdrv_all_can_snapshot(false, NULL, errp)) { + if (!bdrv_all_can_snapshot(has_devices, devices, errp)) { return ret; } /* Delete old snapshots of the same name */ if (name && overwrite) { - if (bdrv_all_delete_snapshot(name, false, NULL, errp) < 0) { + if (bdrv_all_delete_snapshot(name, has_devices, devices, errp) < 0) { return ret; } } - bs = bdrv_all_find_vmstate_bs(NULL, false, NULL, errp); + bs = bdrv_all_find_vmstate_bs(vmstate, has_devices, devices, errp); if (bs == NULL) { return ret; } @@ -2757,7 +2760,7 @@ int save_snapshot(const char *name, bool overwrite, Error **errp) aio_context_release(aio_context); aio_context = NULL; - ret = bdrv_all_create_snapshot(sn, bs, vm_state_size, false, NULL, errp); + ret = bdrv_all_create_snapshot(sn, bs, vm_state_size, has_devices, devices, errp); if (ret < 0) { goto the_end; } @@ -2858,7 +2861,8 @@ void qmp_xen_load_devices_state(const char *filename, Error **errp) migration_incoming_state_destroy(); } -int load_snapshot(const char *name, Error **errp) +int load_snapshot(const char *name, const char *vmstate, + bool has_devices, strList *devices, Error **errp) { BlockDriverState *bs_vm_state; QEMUSnapshotInfo sn; @@ -2873,15 +2877,15 @@ int load_snapshot(const char *name, Error **errp) return -1; } - if (!bdrv_all_can_snapshot(false, NULL, errp)) { + if (!bdrv_all_can_snapshot(has_devices, devices, errp)) { return -1; } - ret = bdrv_all_find_snapshot(name, false, NULL, errp); + ret = bdrv_all_find_snapshot(name, has_devices, devices, errp); if (ret < 0) { return -1; } - bs_vm_state = bdrv_all_find_vmstate_bs(NULL, false, NULL, errp); + bs_vm_state = bdrv_all_find_vmstate_bs(vmstate, has_devices, devices, errp); if (!bs_vm_state) { return -1; } @@ -2902,7 +2906,7 @@ int load_snapshot(const char *name, Error **errp) /* Flush all IO requests so they don't interfere with the new state. */ bdrv_drain_all_begin(); - ret = bdrv_all_goto_snapshot(name, false, NULL, errp); + ret = bdrv_all_goto_snapshot(name, has_devices, devices, errp); if (ret < 0) { goto err_drain; } diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c index c1b8533d0c..1191aac3ae 100644 --- a/monitor/hmp-cmds.c +++ b/monitor/hmp-cmds.c @@ -1121,7 +1121,7 @@ void hmp_loadvm(Monitor *mon, const QDict *qdict) vm_stop(RUN_STATE_RESTORE_VM); - if (load_snapshot(name, &err) == 0 && saved_vm_running) { + if (load_snapshot(name, NULL, false, NULL, &err) == 0 && saved_vm_running) { vm_start(); } hmp_handle_error(mon, err); @@ -1131,7 +1131,7 @@ void hmp_savevm(Monitor *mon, const QDict *qdict) { Error *err = NULL; - save_snapshot(qdict_get_try_str(qdict, "name"), true, &err); + save_snapshot(qdict_get_try_str(qdict, "name"), true, NULL, false, NULL, &err); hmp_handle_error(mon, err); } diff --git a/replay/replay-snapshot.c b/replay/replay-snapshot.c index 8e7ff97d11..8ed09177b5 100644 --- a/replay/replay-snapshot.c +++ b/replay/replay-snapshot.c @@ -77,13 +77,13 @@ void replay_vmstate_init(void) if (replay_snapshot) { if (replay_mode == REPLAY_MODE_RECORD) { - if (save_snapshot(replay_snapshot, true, &err) != 0) { + if (save_snapshot(replay_snapshot, true, NULL, false, NULL, &err) != 0) { error_report_err(err); error_report("Could not create snapshot for icount record"); exit(1); } } else if (replay_mode == REPLAY_MODE_PLAY) { - if (load_snapshot(replay_snapshot, &err) != 0) { + if (load_snapshot(replay_snapshot, NULL, false, NULL, &err) != 0) { error_report_err(err); error_report("Could not load snapshot for icount replay"); exit(1); diff --git a/softmmu/vl.c b/softmmu/vl.c index f7b103467c..820d380229 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -4459,7 +4459,7 @@ void qemu_init(int argc, char **argv, char **envp) register_global_state(); if (loadvm) { Error *local_err = NULL; - if (load_snapshot(loadvm, &local_err) < 0) { + if (load_snapshot(loadvm, NULL, false, NULL, &local_err) < 0) { error_report_err(local_err); autostart = 0; exit(1);