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Mon, 24 Feb 2020 20:57:03 +0000 Received: from abhmp0010.oracle.com (abhmp0010.oracle.com [141.146.116.16]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 01OKv1Cu028884; Mon, 24 Feb 2020 20:57:01 GMT Received: from jaraman-bur-1.us.oracle.com (/10.152.33.39) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 24 Feb 2020 12:57:01 -0800 From: Jagannathan Raman To: qemu-devel@nongnu.org Subject: [PATCH v5 42/50] multi-process/mig: Send VMSD of remote to the Proxy object Date: Mon, 24 Feb 2020 15:55:33 -0500 Message-Id: <74d6f7b67720a31a53c25164f8d9769c32d8c643.1582576372.git.jag.raman@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: References: In-Reply-To: References: X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9541 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 suspectscore=1 mlxlogscore=999 malwarescore=0 mlxscore=0 spamscore=0 phishscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002240154 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9541 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 bulkscore=0 clxscore=1015 malwarescore=0 impostorscore=0 adultscore=0 phishscore=0 priorityscore=1501 mlxlogscore=999 spamscore=0 mlxscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002240153 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 156.151.31.86 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: elena.ufimtseva@oracle.com, fam@euphon.net, swapnil.ingle@nutanix.com, john.g.johnson@oracle.com, kraxel@redhat.com, jag.raman@oracle.com, quintela@redhat.com, mst@redhat.com, armbru@redhat.com, kanth.ghatraju@oracle.com, felipe@nutanix.com, thuth@redhat.com, ehabkost@redhat.com, konrad.wilk@oracle.com, dgilbert@redhat.com, liran.alon@oracle.com, stefanha@redhat.com, thanos.makatos@nutanix.com, rth@twiddle.net, kwolf@redhat.com, berrange@redhat.com, mreitz@redhat.com, ross.lagerwall@citrix.com, marcandre.lureau@gmail.com, pbonzini@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" The remote process sends the VMSD to the Proxy object, on the source side Signed-off-by: Elena Ufimtseva Signed-off-by: John G Johnson Signed-off-by: Jagannathan Raman --- migration/savevm.c | 27 +++++++++++++++++++++++++++ migration/savevm.h | 2 ++ remote/remote-main.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 72 insertions(+) diff --git a/migration/savevm.c b/migration/savevm.c index 1d4220e..09af14d 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -2942,3 +2942,30 @@ bool vmstate_check_only_migratable(const VMStateDescription *vmsd) return !(vmsd && vmsd->unmigratable); } + +int qemu_remote_savevm(QEMUFile *f) +{ + SaveStateEntry *se; + int ret; + + QTAILQ_FOREACH(se, &savevm_state.handlers, entry) { + if (!se->vmsd || !vmstate_save_needed(se->vmsd, se->opaque)) { + continue; + } + + save_section_header(f, se, QEMU_VM_SECTION_FULL); + + ret = vmstate_save(f, se, NULL); + if (ret) { + qemu_file_set_error(f, ret); + return ret; + } + + save_section_footer(f, se); + } + + qemu_put_byte(f, QEMU_VM_EOF); + qemu_fflush(f); + + return 0; +} diff --git a/migration/savevm.h b/migration/savevm.h index ba64a7e..0491d3a 100644 --- a/migration/savevm.h +++ b/migration/savevm.h @@ -65,4 +65,6 @@ void qemu_loadvm_state_cleanup(void); int qemu_loadvm_state_main(QEMUFile *f, MigrationIncomingState *mis); int qemu_load_device_state(QEMUFile *f); +int qemu_remote_savevm(QEMUFile *f); + #endif diff --git a/remote/remote-main.c b/remote/remote-main.c index 58d9905..e97eb76 100644 --- a/remote/remote-main.c +++ b/remote/remote-main.c @@ -53,6 +53,16 @@ #include "qemu/log.h" #include "qemu/cutils.h" #include "remote-opts.h" +#include "qapi/error.h" +#include "io/channel-util.h" + +#include "io/channel.h" +#include "io/channel-socket.h" +#include "migration/qemu-file-types.h" +#include "migration/savevm.h" +#include "migration/qemu-file-channel.h" +#include "migration/qemu-file.h" + #include "monitor/monitor.h" #include "chardev/char.h" #include "sysemu/reset.h" @@ -322,6 +332,36 @@ static int setup_device(MPQemuMsg *msg, Error **errp) } +static void process_start_mig_out(MPQemuMsg *msg) +{ + int wait = msg->fds[1]; + Error *err = NULL; + QIOChannel *ioc; + QEMUFile *f; + + ioc = qio_channel_new_fd(msg->fds[0], &err); + if (err) { + error_report_err(err); + return; + } + + qio_channel_set_name(QIO_CHANNEL(ioc), "remote-migration-channel"); + + f = qemu_fopen_channel_output(ioc); + + bdrv_drain_all(); + (void)bdrv_flush_all(); + + (void)qemu_remote_savevm(f); + + qemu_fflush(f); + + notify_proxy(wait, (uint64_t)qemu_ftell(f)); + PUT_REMOTE_WAIT(wait); + + qemu_fclose(f); +} + static void process_msg(GIOCondition cond, MPQemuChannel *chan) { MPQemuMsg *msg = NULL; @@ -411,6 +451,9 @@ static void process_msg(GIOCondition cond, MPQemuChannel *chan) notify_proxy(msg->fds[0], 0); } break; + case START_MIG_OUT: + process_start_mig_out(msg); + break; default: error_setg(&err, "Unknown command"); goto finalize_loop;