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bh=4ICTjmTIp4/9iz8NS7/XDDwyC855gnPc7jJgUvonyEI=; b=QM6bd/mqBxm/jfgDRqy95dFPvwxo4DFL1X7uxypGjHndrgpkImb30/p3xXyHp4aUcV5oiH 0TDvbMNxxez2Aix6QuHuSzKestjMkVUZrMRGUAXDVNezsWx1MbeIO3NJ+yhRY5l1p+dxqx DlLHSQE8RUuZflIJ9+XeuLr3ZCT1Ka4= X-MC-Unique: 3dPm2e_QOhySIEQCmfnOXg-1 From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH 01/33] migration: push Error **errp into qemu_loadvm_state() Date: Thu, 4 Feb 2021 17:18:35 +0000 Message-Id: <20210204171907.901471-2-berrange@redhat.com> In-Reply-To: <20210204171907.901471-1-berrange@redhat.com> References: <20210204171907.901471-1-berrange@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=berrange@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=216.205.24.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.351, 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, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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: Juan Quintela , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , "Dr. David Alan Gilbert" , Hailiang Zhang Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) This is an incremental step in converting vmstate loading code to report via Error objects instead of printing directly to the console/monitor. Signed-off-by: Daniel P. Berrang=C3=A9 Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- migration/migration.c | 4 ++-- migration/savevm.c | 36 ++++++++++++++++++++---------------- migration/savevm.h | 2 +- 3 files changed, 23 insertions(+), 19 deletions(-) diff --git a/migration/migration.c b/migration/migration.c index 1986cb8573..287a18d269 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -519,7 +519,7 @@ static void process_incoming_migration_co(void *opaque) postcopy_state_set(POSTCOPY_INCOMING_NONE); migrate_set_state(&mis->state, MIGRATION_STATUS_NONE, MIGRATION_STATUS_ACTIVE); - ret =3D qemu_loadvm_state(mis->from_src_file); + ret =3D qemu_loadvm_state(mis->from_src_file, &local_err); =20 ps =3D postcopy_state_get(); trace_process_incoming_migration_co_end(ret, ps); @@ -563,7 +563,7 @@ static void process_incoming_migration_co(void *opaque) } =20 if (ret < 0) { - error_report("load of migration failed: %s", strerror(-ret)); + error_report_err(local_err); goto fail; } mis->bh =3D qemu_bh_new(process_incoming_migration_bh, mis); diff --git a/migration/savevm.c b/migration/savevm.c index 6b320423c7..c8d93eee1e 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -2638,40 +2638,49 @@ out: return ret; } =20 -int qemu_loadvm_state(QEMUFile *f) +int qemu_loadvm_state(QEMUFile *f, Error **errp) { MigrationIncomingState *mis =3D migration_incoming_get_current(); - Error *local_err =3D NULL; int ret; =20 - if (qemu_savevm_state_blocked(&local_err)) { - error_report_err(local_err); - return -EINVAL; + if (qemu_savevm_state_blocked(errp)) { + return -1; } =20 ret =3D qemu_loadvm_state_header(f); if (ret) { - return ret; + error_setg(errp, "Error %d while loading VM state", ret); + return -1; } =20 if (qemu_loadvm_state_setup(f) !=3D 0) { - return -EINVAL; + error_setg(errp, "Error %d while loading VM state", -EINVAL); + return -1; } =20 cpu_synchronize_all_pre_loadvm(); =20 ret =3D qemu_loadvm_state_main(f, mis); + if (ret < 0) { + error_setg(errp, "Error %d while loading VM state", ret); + ret =3D -1; + } qemu_event_set(&mis->main_thread_load_event); =20 trace_qemu_loadvm_state_post_main(ret); =20 if (mis->have_listen_thread) { + error_setg(errp, "Error %d while loading VM state", ret); /* Listen thread still going, can't clean up yet */ return ret; } =20 if (ret =3D=3D 0) { ret =3D qemu_file_get_error(f); + if (ret < 0) { + error_setg(errp, "Error %d while loading VM state", ret); + ret =3D -1; + } } =20 /* @@ -2690,8 +2699,8 @@ int qemu_loadvm_state(QEMUFile *f) uint8_t section_type =3D qemu_get_byte(f); =20 if (section_type !=3D QEMU_VM_VMDESCRIPTION) { - error_report("Expected vmdescription section, but got %d", - section_type); + error_setg(errp, "Expected vmdescription section, but got %d", + section_type); /* * It doesn't seem worth failing at this point since * we apparently have an otherwise valid VM state @@ -2921,7 +2930,6 @@ void qmp_xen_load_devices_state(const char *filename,= Error **errp) { QEMUFile *f; QIOChannelFile *ioc; - int ret; =20 /* Guest must be paused before loading the device state; the RAM state * will already have been loaded by xc @@ -2940,11 +2948,8 @@ void qmp_xen_load_devices_state(const char *filename= , Error **errp) f =3D qemu_fopen_channel_input(QIO_CHANNEL(ioc)); object_unref(OBJECT(ioc)); =20 - ret =3D qemu_loadvm_state(f); + qemu_loadvm_state(f, errp); qemu_fclose(f); - if (ret < 0) { - error_setg(errp, QERR_IO_ERROR); - } migration_incoming_state_destroy(); } =20 @@ -3018,14 +3023,13 @@ bool load_snapshot(const char *name, const char *vm= state, goto err_drain; } aio_context_acquire(aio_context); - ret =3D qemu_loadvm_state(f); + ret =3D qemu_loadvm_state(f, errp); migration_incoming_state_destroy(); aio_context_release(aio_context); =20 bdrv_drain_all_end(); =20 if (ret < 0) { - error_setg(errp, "Error %d while loading VM state", ret); return false; } =20 diff --git a/migration/savevm.h b/migration/savevm.h index ba64a7e271..1069e2dd4f 100644 --- a/migration/savevm.h +++ b/migration/savevm.h @@ -60,7 +60,7 @@ void qemu_savevm_send_colo_enable(QEMUFile *f); void qemu_savevm_live_state(QEMUFile *f); int qemu_save_device_state(QEMUFile *f); =20 -int qemu_loadvm_state(QEMUFile *f); +int qemu_loadvm_state(QEMUFile *f, Error **errp); void qemu_loadvm_state_cleanup(void); int qemu_loadvm_state_main(QEMUFile *f, MigrationIncomingState *mis); int qemu_load_device_state(QEMUFile *f); --=20 2.29.2