From patchwork Mon Dec 28 14:58:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukas Straub X-Patchwork-Id: 1420890 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=web.de Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; secure) header.d=web.de header.i=@web.de header.a=rsa-sha256 header.s=dbaedf251592 header.b=J0Inf82Z; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 4D4LP13w1jz9s1l for ; Tue, 29 Dec 2020 02:01:57 +1100 (AEDT) Received: from localhost ([::1]:56986 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ktu1z-00040d-B3 for incoming@patchwork.ozlabs.org; Mon, 28 Dec 2020 10:01:55 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:47740) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kttz7-0002yU-3r; Mon, 28 Dec 2020 09:58:57 -0500 Received: from mout.web.de ([212.227.15.3]:60253) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kttz4-0006ZG-S9; Mon, 28 Dec 2020 09:58:56 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1609167528; bh=gnqP+PjsQ+2XVKsqF0NL/y9CLxmi5xk6iZ+6W4OvvWU=; h=X-UI-Sender-Class:Date:From:To:Cc:Subject:In-Reply-To:References; b=J0Inf82Zrhl/uijAgU8lY0SBYPtRhO1qYlUvezaBKUWePHwugYkyZuy0dtpjg3FCC h51p2OATpdcvab/z6m7vbsmMB5sXxQ1obVDeKgu/xhMasnNQouJ9wTO6tdSSFBzjLn jGrpnOlUvcxEvtcxDBI+KX7aPvrr3zk92inGIFeI= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from gecko.fritz.box ([94.134.180.94]) by smtp.web.de (mrweb002 [213.165.67.108]) with ESMTPSA (Nemesis) id 0LbImQ-1kA5Z40g8I-00kvWP; Mon, 28 Dec 2020 15:58:48 +0100 Date: Mon, 28 Dec 2020 15:58:46 +0100 From: Lukas Straub To: qemu-devel Subject: [PATCH v13 4/7] migration: Add yank feature Message-ID: In-Reply-To: References: MIME-Version: 1.0 X-Provags-ID: V03:K1:p7VzboNkqcyJ6k+MN6He5G4OAo97kBTf9xTZHcKbTA7gFcbK62v OEZJyXsMup76ITN9UakzAFfmjZSSu9MHkN1dC6ob8YqcSizvzDuFtFjnW9D3TOvQDWuTal4 s4P6v/ijeiwB9RjJO0ync3b09Jw6jrgOv8DJL6ldyPDlrPzym8yY4y7ADf5MR7uOVHCl/xh zkIXFKaPy5+aocMfTX11Q== X-UI-Out-Filterresults: notjunk:1;V03:K0:tkpxx+039F8=:vrgMBZ2gCN4JWdKXD2j8zi bRRKB1UcA+8fw1ODQx78vodtymki86g8qqPXSh7xplpiEibMdIoH4at5n3QxKpkhkodbXeRgI vpzLQXGVDhZ9aewNKWo2k8ti8afFafKj6LK75Bma0eOd8g2a7+S1+WSxeuynYS6YpcU4uysBq Kh22fMV30mjF2Rucsrl/z0UDwJhaHtRdVbrO9/ZYToxWROjwh4edZXi7LT9O7ZZYwFmP9ZcMU swVP47pTy17DSS2bZyoUiRSFheMC+wsIxBlxVqlNyP1MPcwY2v2vikRUGY+NB0gqWpImczVdl oAOupJ0BLuLnBm1n3M6LIYL8NNOL7His+g5zYOZ+YU9fqTYlezOEzux4I5jMQ11Wk8EnIedgG JOfu5sUGkQ9sfIWbcbsk0ALTbrH3HNUDdykyqjVsIHALXRGUPjbV03LVrP2sPnKBPEsf8cgQh 0ddkM1Xq8PndUfNMeikqo6xYL5SBSOrzSaaejCkS833ItD1LCNnn2dv3yJmneNjCtTSJ2KanE gfBWsYT4wxODYH56uqcyWhYkYeabEZ+9qB2BNEVZaaRG07CQGj19F8apWCMFu4J3Y6vyC6OiV 7q0Pl7Dqx/TYXXmXzxUrT4T5lh46A2E2YO+0/IFOcih+LuVBPO8+P2Sa+iEsMs03gs2p2vyO1 RrwKiLqG4CD4/Bxafcyr6X44iaaUdaJ9szfB7ucAGKh+aLifNjd8NAkodbupVZcXnKI60+KT1 yxXL2x+4prpZZ+itdYJazrIlSt5EfS7hP35n7Ah/5zaEgBUCJv3EuR4fLdnEZI/kjhs/SXW2J f+Rxr7IelBxR2qj/y5nJ73oPJe0TJiPw6TrOR7baF6DYeEoOZ/hnUAXNmAp2MR/DMdGrRkTGU ppXIRMNqLlRTYbD+ggl0F+gWC9edwVchUcBSFTn6M= Received-SPF: pass client-ip=212.227.15.3; envelope-from=lukasstraub2@web.de; helo=mout.web.de X-Spam_score_int: -9 X-Spam_score: -1.0 X-Spam_bar: - X-Spam_report: (-1.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_SORBS_WEB=1.5, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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 , "Daniel P. =?utf-8?q?Berrang=C3=A9=5C?= " , qemu-block , Juan Quintela , Markus Armbruster , "Dr. David Alan Gilbert" , Max Reitz , =?utf-8?q?Marc-Andr=C3=A9?= Lureau , Paolo Bonzini , =?utf-8?q?Marc-Andr=C3=A9?= Lureau Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Register yank functions on sockets to shut them down. Signed-off-by: Lukas Straub Acked-by: Stefan Hajnoczi Acked-by: Dr. David Alan Gilbert --- migration/channel.c | 13 +++++++++++++ migration/migration.c | 22 ++++++++++++++++++++++ migration/multifd.c | 10 ++++++++++ migration/qemu-file-channel.c | 7 +++++++ migration/savevm.c | 5 +++++ 5 files changed, 57 insertions(+) -- 2.29.2 diff --git a/migration/channel.c b/migration/channel.c index 8a783baa0b..35fe234e9c 100644 --- a/migration/channel.c +++ b/migration/channel.c @@ -18,6 +18,8 @@ #include "trace.h" #include "qapi/error.h" #include "io/channel-tls.h" +#include "io/channel-socket.h" +#include "qemu/yank.h" /** * @migration_channel_process_incoming - Create new incoming migration channel @@ -35,6 +37,11 @@ void migration_channel_process_incoming(QIOChannel *ioc) trace_migration_set_incoming_channel( ioc, object_get_typename(OBJECT(ioc))); + if (object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_SOCKET)) { + yank_register_function(MIGRATION_YANK_INSTANCE, yank_generic_iochannel, + QIO_CHANNEL(ioc)); + } + if (s->parameters.tls_creds && *s->parameters.tls_creds && !object_dynamic_cast(OBJECT(ioc), @@ -67,6 +74,12 @@ void migration_channel_connect(MigrationState *s, ioc, object_get_typename(OBJECT(ioc)), hostname, error); if (!error) { + if (object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_SOCKET)) { + yank_register_function(MIGRATION_YANK_INSTANCE, + yank_generic_iochannel, + QIO_CHANNEL(ioc)); + } + if (s->parameters.tls_creds && *s->parameters.tls_creds && !object_dynamic_cast(OBJECT(ioc), diff --git a/migration/migration.c b/migration/migration.c index e0dbde4091..92f7cb70b2 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -56,6 +56,7 @@ #include "net/announce.h" #include "qemu/queue.h" #include "multifd.h" +#include "qemu/yank.h" #ifdef CONFIG_VFIO #include "hw/vfio/vfio-common.h" @@ -254,6 +255,8 @@ void migration_incoming_state_destroy(void) qapi_free_SocketAddressList(mis->socket_address_list); mis->socket_address_list = NULL; } + + yank_unregister_instance(MIGRATION_YANK_INSTANCE); } static void migrate_generate_event(int new_state) @@ -418,6 +421,10 @@ static void qemu_start_incoming_migration(const char *uri, Error **errp) { const char *p = NULL; + if (!yank_register_instance(MIGRATION_YANK_INSTANCE, errp)) { + return; + } + qapi_event_send_migration(MIGRATION_STATUS_SETUP); if (strstart(uri, "tcp:", &p) || strstart(uri, "unix:", NULL) || @@ -432,6 +439,7 @@ static void qemu_start_incoming_migration(const char *uri, Error **errp) } else if (strstart(uri, "fd:", &p)) { fd_start_incoming_migration(p, errp); } else { + yank_unregister_instance(MIGRATION_YANK_INSTANCE); error_setg(errp, "unknown migration protocol: %s", uri); } } @@ -1737,6 +1745,7 @@ static void migrate_fd_cleanup(MigrationState *s) } notifier_list_notify(&migration_state_notifiers, s); block_cleanup_parameters(s); + yank_unregister_instance(MIGRATION_YANK_INSTANCE); } static void migrate_fd_cleanup_schedule(MigrationState *s) @@ -2011,6 +2020,7 @@ void qmp_migrate_recover(const char *uri, Error **errp) * only re-setup the migration stream and poke existing migration * to continue using that newly established channel. */ + yank_unregister_instance(MIGRATION_YANK_INSTANCE); qemu_start_incoming_migration(uri, errp); } @@ -2148,6 +2158,12 @@ void qmp_migrate(const char *uri, bool has_blk, bool blk, return; } + if (!(has_resume && resume)) { + if (!yank_register_instance(MIGRATION_YANK_INSTANCE, errp)) { + return; + } + } + if (strstart(uri, "tcp:", &p) || strstart(uri, "unix:", NULL) || strstart(uri, "vsock:", NULL)) { @@ -2161,6 +2177,9 @@ void qmp_migrate(const char *uri, bool has_blk, bool blk, } else if (strstart(uri, "fd:", &p)) { fd_start_outgoing_migration(s, p, &local_err); } else { + if (!(has_resume && resume)) { + yank_unregister_instance(MIGRATION_YANK_INSTANCE); + } error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "uri", "a valid migration protocol"); migrate_set_state(&s->state, MIGRATION_STATUS_SETUP, @@ -2170,6 +2189,9 @@ void qmp_migrate(const char *uri, bool has_blk, bool blk, } if (local_err) { + if (!(has_resume && resume)) { + yank_unregister_instance(MIGRATION_YANK_INSTANCE); + } migrate_fd_error(s, local_err); error_propagate(errp, local_err); return; diff --git a/migration/multifd.c b/migration/multifd.c index 45c690aa11..1a1e589064 100644 --- a/migration/multifd.c +++ b/migration/multifd.c @@ -25,6 +25,9 @@ #include "trace.h" #include "multifd.h" +#include "qemu/yank.h" +#include "io/channel-socket.h" + /* Multiple fd's */ #define MULTIFD_MAGIC 0x11223344U @@ -974,6 +977,13 @@ int multifd_load_cleanup(Error **errp) for (i = 0; i < migrate_multifd_channels(); i++) { MultiFDRecvParams *p = &multifd_recv_state->params[i]; + if (object_dynamic_cast(OBJECT(p->c), TYPE_QIO_CHANNEL_SOCKET) + && OBJECT(p->c)->ref == 1) { + yank_unregister_function(MIGRATION_YANK_INSTANCE, + yank_generic_iochannel, + QIO_CHANNEL(p->c)); + } + object_unref(OBJECT(p->c)); p->c = NULL; qemu_mutex_destroy(&p->mutex); diff --git a/migration/qemu-file-channel.c b/migration/qemu-file-channel.c index d2ce32f4b9..afc3a7f642 100644 --- a/migration/qemu-file-channel.c +++ b/migration/qemu-file-channel.c @@ -27,6 +27,7 @@ #include "qemu-file.h" #include "io/channel-socket.h" #include "qemu/iov.h" +#include "qemu/yank.h" static ssize_t channel_writev_buffer(void *opaque, @@ -104,6 +105,12 @@ static int channel_close(void *opaque, Error **errp) int ret; QIOChannel *ioc = QIO_CHANNEL(opaque); ret = qio_channel_close(ioc, errp); + if (object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_SOCKET) + && OBJECT(ioc)->ref == 1) { + yank_unregister_function(MIGRATION_YANK_INSTANCE, + yank_generic_iochannel, + QIO_CHANNEL(ioc)); + } object_unref(OBJECT(ioc)); return ret; } diff --git a/migration/savevm.c b/migration/savevm.c index 5f937a2762..b3c29776db 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -62,6 +62,7 @@ #include "migration/colo.h" #include "qemu/bitmap.h" #include "net/announce.h" +#include "qemu/yank.h" const unsigned int postcopy_ram_discard_version; @@ -3008,6 +3009,10 @@ int load_snapshot(const char *name, Error **errp) qemu_system_reset(SHUTDOWN_CAUSE_NONE); mis->from_src_file = f; + if (!yank_register_instance(MIGRATION_YANK_INSTANCE, errp)) { + ret = -EINVAL; + goto err_drain; + } aio_context_acquire(aio_context); ret = qemu_loadvm_state(f); migration_incoming_state_destroy();