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bh=wHusVvUpENiraCIsO2mGYaSUCOjLQU0oOVgnp9EG2Lk=; b=RwCacpWZnK4eDJ5pNdfbcg0xCHdNnP3smQzZgodDDRgGPTvLaoh6zJkDrA3cIdt2POiv9H FtG+snmPbP4T6Io3QFLV6g5dwL8FlCymnfKwF7k8MX006xS7ddYX9ZOXsTO2jxFSUPoI5D +8eDFPPnYBcvWsLN4xTwznZ+1VAWsrs= X-MC-Unique: d_EizzR7N-uleCWChIcstA-1 From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH 06/33] migration: push Error **errp into qemu_loadvm_section_start_full() Date: Thu, 4 Feb 2021 17:18:40 +0000 Message-Id: <20210204171907.901471-7-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=ham 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. This is particularly useful for loading snapshots as this is a likely error scenario to hit when the source and dest VM configs do not match. This is illustrated by the improved error reporting in the QMP load snapshot test. Signed-off-by: Daniel P. Berrang=C3=A9 Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- migration/savevm.c | 49 +++++++++---------- .../tests/internal-snapshots-qapi.out | 3 +- 2 files changed, 25 insertions(+), 27 deletions(-) diff --git a/migration/savevm.c b/migration/savevm.c index e47aec435c..f2eee0a4a7 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -2350,7 +2350,8 @@ static bool check_section_footer(QEMUFile *f, SaveSta= teEntry *se) } =20 static int -qemu_loadvm_section_start_full(QEMUFile *f, MigrationIncomingState *mis) +qemu_loadvm_section_start_full(QEMUFile *f, MigrationIncomingState *mis, + Error **errp) { uint32_t instance_id, version_id, section_id; SaveStateEntry *se; @@ -2360,18 +2361,18 @@ qemu_loadvm_section_start_full(QEMUFile *f, Migrati= onIncomingState *mis) /* Read section start */ section_id =3D qemu_get_be32(f); if (!qemu_get_counted_string(f, idstr)) { - error_report("Unable to read ID string for section %u", - section_id); - return -EINVAL; + error_setg(errp, "Unable to read ID string for section %u", + section_id); + return -1; } instance_id =3D qemu_get_be32(f); version_id =3D qemu_get_be32(f); =20 ret =3D qemu_file_get_error(f); if (ret) { - error_report("%s: Failed to read instance/version ID: %d", - __func__, ret); - return ret; + error_setg(errp, "Failed to read instance/version ID: %d", + ret); + return -1; } =20 trace_qemu_loadvm_state_section_startfull(section_id, idstr, @@ -2379,36 +2380,37 @@ qemu_loadvm_section_start_full(QEMUFile *f, Migrati= onIncomingState *mis) /* Find savevm section */ se =3D find_se(idstr, instance_id); if (se =3D=3D NULL) { - error_report("Unknown savevm section or instance '%s' %"PRIu32". " - "Make sure that your current VM setup matches your " - "saved VM setup, including any hotplugged devices", - idstr, instance_id); - return -EINVAL; + error_setg(errp, "Unknown savevm section or instance '%s' %"PRIu32= ". " + "Make sure that your current VM setup matches your " + "saved VM setup, including any hotplugged devices", + idstr, instance_id); + return -1; } =20 /* Validate version */ if (version_id > se->version_id) { - error_report("savevm: unsupported version %d for '%s' v%d", - version_id, idstr, se->version_id); - return -EINVAL; + error_setg(errp, "savevm: unsupported version %d for '%s' v%d", + version_id, idstr, se->version_id); + return -1; } se->load_version_id =3D version_id; se->load_section_id =3D section_id; =20 /* Validate if it is a device's state */ if (xen_enabled() && se->is_ram) { - error_report("loadvm: %s RAM loading not allowed on Xen", idstr); - return -EINVAL; + error_setg(errp, "loadvm: %s RAM loading not allowed on Xen", idst= r); + return -1; } =20 ret =3D vmstate_load(f, se); if (ret < 0) { - error_report("error while loading state for instance 0x%"PRIx32" o= f" - " device '%s'", instance_id, idstr); - return ret; + error_setg(errp, "error while loading state for instance 0x%"PRIx3= 2" of" + " device '%s'", instance_id, idstr); + return -1; } if (!check_section_footer(f, se)) { - return -EINVAL; + error_setg(errp, "failed check for device state section footer"); + return -1; } =20 return 0; @@ -2601,11 +2603,8 @@ retry: switch (section_type) { case QEMU_VM_SECTION_START: case QEMU_VM_SECTION_FULL: - ret =3D qemu_loadvm_section_start_full(f, mis); + ret =3D qemu_loadvm_section_start_full(f, mis, errp); if (ret < 0) { - error_setg(errp, - "Failed to load device state section start: %d", - ret); goto out; } break; diff --git a/tests/qemu-iotests/tests/internal-snapshots-qapi.out b/tests/q= emu-iotests/tests/internal-snapshots-qapi.out index 26ff4a838c..fd3e2a9ed0 100644 --- a/tests/qemu-iotests/tests/internal-snapshots-qapi.out +++ b/tests/qemu-iotests/tests/internal-snapshots-qapi.out @@ -345,13 +345,12 @@ Formatting 'TEST_DIR/t.qcow2.alt2', fmt=3DIMGFMT size= =3D134217728 "devices": ["diskfmt0"]}} {"return": {}} {"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event"= : "JOB_STATUS_CHANGE", "data": {"status": "created", "id": "load-err-stderr= "}} -qemu-system-x86_64: Unknown savevm section or instance '0000:00:02.0/virti= o-rng' 0. Make sure that your current VM setup matches your saved VM setup,= including any hotplugged devices {"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event"= : "JOB_STATUS_CHANGE", "data": {"status": "running", "id": "load-err-stderr= "}} {"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event"= : "STOP"} {"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event"= : "JOB_STATUS_CHANGE", "data": {"status": "aborting", "id": "load-err-stder= r"}} {"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event"= : "JOB_STATUS_CHANGE", "data": {"status": "concluded", "id": "load-err-stde= rr"}} {"execute": "query-jobs"} -{"return": [{"current-progress": 1, "status": "concluded", "total-progress= ": 1, "type": "snapshot-load", "id": "load-err-stderr", "error": "Error -22= while loading VM state"}]} +{"return": [{"current-progress": 1, "status": "concluded", "total-progress= ": 1, "type": "snapshot-load", "id": "load-err-stderr", "error": "Unknown s= avevm section or instance '0000:00:02.0/virtio-rng' 0. Make sure that your = current VM setup matches your saved VM setup, including any hotplugged devi= ces"}]} {"execute": "job-dismiss", "arguments": {"id": "load-err-stderr"}} {"return": {}} {"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event"= : "JOB_STATUS_CHANGE", "data": {"status": "null", "id": "load-err-stderr"}} --=20 2.29.2