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Berrange" , Markus Armbruster , Steve Sistare Subject: [PATCH V2 09/13] migration: cpr-transfer save and load Date: Mon, 30 Sep 2024 12:40:40 -0700 Message-Id: <1727725244-105198-10-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1727725244-105198-1-git-send-email-steven.sistare@oracle.com> References: <1727725244-105198-1-git-send-email-steven.sistare@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-09-30_19,2024-09-30_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 phishscore=0 malwarescore=0 mlxscore=0 spamscore=0 suspectscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2408220000 definitions=main-2409300142 X-Proofpoint-ORIG-GUID: Jz3seJgWX342VeG14Jt82mz_eBTVPqqn X-Proofpoint-GUID: Jz3seJgWX342VeG14Jt82mz_eBTVPqqn Received-SPF: pass client-ip=205.220.165.32; envelope-from=steven.sistare@oracle.com; helo=mx0a-00069f02.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Add functions to create a QEMUFile based on a unix URI, for saving or loading, for use by cpr-transfer mode to preserve CPR state. Signed-off-by: Steve Sistare Reviewed-by: Peter Xu --- include/migration/cpr.h | 3 ++ migration/cpr-transfer.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++ migration/meson.build | 1 + 3 files changed, 85 insertions(+) create mode 100644 migration/cpr-transfer.c diff --git a/include/migration/cpr.h b/include/migration/cpr.h index ac7a63e..51c19ed 100644 --- a/include/migration/cpr.h +++ b/include/migration/cpr.h @@ -30,4 +30,7 @@ int cpr_state_load(Error **errp); void cpr_state_close(void); struct QIOChannel *cpr_state_ioc(void); +QEMUFile *cpr_transfer_output(const char *uri, Error **errp); +QEMUFile *cpr_transfer_input(const char *uri, Error **errp); + #endif diff --git a/migration/cpr-transfer.c b/migration/cpr-transfer.c new file mode 100644 index 0000000..fb9ecd8 --- /dev/null +++ b/migration/cpr-transfer.c @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2022, 2024 Oracle and/or its affiliates. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "io/channel-file.h" +#include "io/channel-socket.h" +#include "io/net-listener.h" +#include "migration/cpr.h" +#include "migration/migration.h" +#include "migration/savevm.h" +#include "migration/qemu-file.h" +#include "migration/vmstate.h" + +QEMUFile *cpr_transfer_output(const char *uri, Error **errp) +{ + g_autoptr(MigrationChannel) channel = NULL; + QIOChannel *ioc; + + if (!migrate_uri_parse(uri, &channel, errp)) { + return NULL; + } + + if (channel->addr->transport == MIGRATION_ADDRESS_TYPE_SOCKET && + channel->addr->u.socket.type == SOCKET_ADDRESS_TYPE_UNIX) { + + QIOChannelSocket *sioc = qio_channel_socket_new(); + SocketAddress *saddr = &channel->addr->u.socket; + + if (qio_channel_socket_connect_sync(sioc, saddr, errp)) { + object_unref(OBJECT(sioc)); + return NULL; + } + ioc = QIO_CHANNEL(sioc); + + } else { + error_setg(errp, "bad cpr-uri %s; must be unix:", uri); + return NULL; + } + + qio_channel_set_name(ioc, "cpr-out"); + return qemu_file_new_output(ioc); +} + +QEMUFile *cpr_transfer_input(const char *uri, Error **errp) +{ + g_autoptr(MigrationChannel) channel = NULL; + QIOChannel *ioc; + + if (!migrate_uri_parse(uri, &channel, errp)) { + return NULL; + } + + if (channel->addr->transport == MIGRATION_ADDRESS_TYPE_SOCKET && + channel->addr->u.socket.type == SOCKET_ADDRESS_TYPE_UNIX) { + + QIOChannelSocket *sioc; + SocketAddress *saddr = &channel->addr->u.socket; + QIONetListener *listener = qio_net_listener_new(); + + qio_net_listener_set_name(listener, "cpr-socket-listener"); + if (qio_net_listener_open_sync(listener, saddr, 1, errp) < 0) { + object_unref(OBJECT(listener)); + return NULL; + } + + sioc = qio_net_listener_wait_client(listener); + ioc = QIO_CHANNEL(sioc); + + } else { + error_setg(errp, "bad cpr-uri %s; must be unix:", uri); + return NULL; + } + + qio_channel_set_name(ioc, "cpr-in"); + return qemu_file_new_input(ioc); +} diff --git a/migration/meson.build b/migration/meson.build index e5f4211..684ba98 100644 --- a/migration/meson.build +++ b/migration/meson.build @@ -14,6 +14,7 @@ system_ss.add(files( 'channel.c', 'channel-block.c', 'cpr.c', + 'cpr-transfer.c', 'dirtyrate.c', 'exec.c', 'fd.c',