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Thu, 24 Oct 2019 09:11:58 +0000 Received: from abhmp0008.oracle.com (abhmp0008.oracle.com [141.146.116.14]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id x9O9BwV3024589; Thu, 24 Oct 2019 09:11:58 GMT Received: from jaraman-bur-1.us.oracle.com (/10.152.33.39) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 24 Oct 2019 02:11:57 -0700 From: Jagannathan Raman To: qemu-devel@nongnu.org Subject: [RFC v4 PATCH 46/49] multi-process/mig: Restore the VMSD in remote process Date: Thu, 24 Oct 2019 05:09:27 -0400 Message-Id: <43b9bcb5db6e427b7ddc66af243f28d75a854dbc.1571905346.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=9419 signatures=668684 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1910240089 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9419 signatures=668684 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1910240089 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 156.151.31.85 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, 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, thuth@redhat.com, ehabkost@redhat.com, konrad.wilk@oracle.com, dgilbert@redhat.com, liran.alon@oracle.com, stefanha@redhat.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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Elena Ufimtseva The remote process accepts the VMSD from Proxy object and restores it Signed-off-by: Elena Ufimtseva Signed-off-by: John G Johnson Signed-off-by: Jagannathan Raman --- New patch in v4 migration/savevm.c | 36 ++++++++++++++++++++++++++++++++++++ migration/savevm.h | 1 + remote/remote-main.c | 34 ++++++++++++++++++++++++++++++++++ 3 files changed, 71 insertions(+) diff --git a/migration/savevm.c b/migration/savevm.c index 0c84142..d730cd1 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -2930,3 +2930,39 @@ int qemu_remote_savevm(QEMUFile *f) return 0; } + +int qemu_remote_loadvm(QEMUFile *f) +{ + uint8_t section_type; + int ret = 0; + + qemu_mutex_lock_iothread(); + + while (true) { + section_type = qemu_get_byte(f); + + if (qemu_file_get_error(f)) { + ret = qemu_file_get_error(f); + break; + } + + switch (section_type) { + case QEMU_VM_SECTION_FULL: + ret = qemu_loadvm_section_start_full(f, NULL); + if (ret < 0) { + break; + } + break; + case QEMU_VM_EOF: + goto out; + default: + ret = -EINVAL; + goto out; + } + } + +out: + qemu_mutex_unlock_iothread(); + + return ret; +} diff --git a/migration/savevm.h b/migration/savevm.h index a6582ac..415b72c 100644 --- a/migration/savevm.h +++ b/migration/savevm.h @@ -65,5 +65,6 @@ int qemu_loadvm_state_main(QEMUFile *f, MigrationIncomingState *mis); int qemu_load_device_state(QEMUFile *f); int qemu_remote_savevm(QEMUFile *f); +int qemu_remote_loadvm(QEMUFile *f); #endif diff --git a/remote/remote-main.c b/remote/remote-main.c index 2de5ddf..600c894 100644 --- a/remote/remote-main.c +++ b/remote/remote-main.c @@ -81,6 +81,7 @@ #include "chardev/char.h" #include "sysemu/reset.h" #include "vl.h" +#include "migration/misc.h" static MPQemuLinkState *mpqemu_link; @@ -403,6 +404,30 @@ static void process_start_mig_out(MPQemuMsg *msg) qemu_fclose(f); } +static int process_start_mig_in(MPQemuMsg *msg) +{ + Error *err = NULL; + QIOChannel *ioc; + QEMUFile *f; + int rc = -EINVAL; + + ioc = qio_channel_new_fd(msg->fds[0], &err); + if (err) { + error_report_err(err); + return rc; + } + + qio_channel_set_name(QIO_CHANNEL(ioc), "remote-migration-channel"); + + f = qemu_fopen_channel_input(ioc); + + rc = qemu_remote_loadvm(f); + + qemu_fclose(f); + + return rc; +} + static void process_msg(GIOCondition cond, MPQemuChannel *chan) { MPQemuMsg *msg = NULL; @@ -498,6 +523,13 @@ static void process_msg(GIOCondition cond, MPQemuChannel *chan) case START_MIG_OUT: process_start_mig_out(msg); break; + case START_MIG_IN: + if (process_start_mig_in(msg)) + { + error_setg(&err, "Incoming migration failed."); + goto finalize_loop; + } + break; case RUNSTATE_SET: remote_runstate_set(msg->data1.runstate.state); break; @@ -569,6 +601,8 @@ int main(int argc, char *argv[]) } mpqemu_init_channel(mpqemu_link, &mpqemu_link->mmio, fd); + migration_object_init(); + parse_cmdline(argc - 3, argv + 3, NULL); mpqemu_link_set_callback(mpqemu_link, process_msg); -- 1.8.3.1