hmm, I found the solution, after I read here on forum. I enable this options and save and then disable and save and now is ok. Task is running again. It is running with last commit to So the problem is with these settings which may not exist in the task created before the update. [image: 1751377404079-05b77f69-6e87-49d2-9c62-d795a13d161a-image.png]

It works for me again, thanks for your support

At a certain point, I don't know when because we are talking about a home lab here. I could attach the USB HDD same as a virtual HDD and I could put exclusions on it

@olivierlambert Thank you, this solve the problem

And I confirm this, the problem has disappeared. Thank you

ok, thank you

This is precisely why we did that feature in Xen API Enjoy!

In essence, you can write any script you like in your VM that would be executed, test whatever you want in the database, and if it's OK, write a special key in the XenStore. XO will detect it and consider the backup health check done and working

Hopefully, we'll make things more obvious in terms of "danger zone" in XO 6 UI

Question for you @florent

It seems that the task failed 5 minutes a go, with the error >> HTTP connection has timed out <<, I restarted the task and now everything is displayed. Thank you

@Andrew I'm on the same commit. To be clear, it's a warning not an error -- [4/5] Linking dependencies... warning " > eslint-config-standard@17.0.0" has incorrect peer dependency "eslint-plugin-n@^15.0.0". warning Workspaces can only be enabled in private projects.

@Gheppy It should be fixed, thanks for your report! https://github.com/vatesfr/xen-orchestra/commit/b5578eadf7356098ac2fa4af63b75b18d34ba558 0 julien-f committed to vatesfr/xen-orchestra fix(xo-server/sr.{create,set}): name can be empty Fixes https://xcp-ng.org/forum/post/59937 Introduced by 65168c853

@Gheppy Ah! Great news then

@florent Thanks for the fix. P.S. @Gheppy was the original reporter.

@Gheppy @julien-f I have the same problem.... post 6940 Check Dashboard->Health and look at the bottom to see if the Importing VMs are still there. So far, no solution, other than to rollback to a working version.

came across this topic.. i have exported a vm and trying to import it to another xcp. I had issues with the migration so i tried export and import and i have this error HTTP handler of vm.import undefined { "code": "IMPORT_ERROR_PREMATURE_EOF", "params": [], "url": "", "task": { "uuid": "efbc0249-0825-8465-5c4d-639609790062 ", "name_label": "[XO] VM import", "name_description": "", "allowed_operations": [], "current_operations": {}, "created": "20250121T22:23:40Z", "finished": "20250121T22:35:37Z", "status": "failure", "resident_on": "OpaqueRef:58799ebc-692a-4b39-a70c-fb97e63bcde7", "progress": 1, "type": "<none/>", "result": "", "error_info": [ "IMPORT_ERROR_PREMATURE_EOF" ], "other_config": { "object_creation": "complete" }, "subtask_of": "OpaqueRef:NULL", "subtasks": [], "backtrace": "(((process xapi)(filename lib/backtrace.ml)(line 210))((process xapi)(filename ocaml/xapi/import.ml)(line 2021))((process xapi)(filename ocaml/xapi/server_helpers.ml)(line 92)))" }, "pool_master": { "uuid": "700a5902-5b1d-49ec-a7c7-7be348163ff7", "name_label": "xcpbackup", "name_description": "Default install", "memory_overhead": 1160454144, "allowed_operations": [ "vm_migrate", "provision", "vm_resume", "evacuate", "vm_start" ], "current_operations": {}, "API_version_major": 2, "API_version_minor": 16, "API_version_vendor": "XenSource", "API_version_vendor_implementation": {}, "enabled": true, "software_version": { "product_version": "8.2.1", "product_version_text": "8.2", "product_version_text_short": "8.2", "platform_name": "XCP", "platform_version": "3.2.1", "product_brand": "XCP-ng", "build_number": "release/yangtze/master/58", "hostname": "localhost", "date": "2024-10-30", "dbv": "0.0.1", "xapi": "1.20", "xen": "4.13.5-9.45", "linux": "4.19.0+1", "xencenter_min": "2.16", "xencenter_max": "2.16", "network_backend": "openvswitch", "db_schema": "5.603" }, "other_config": { "agent_start_time": "1737493713.", "boot_time": "1737493639.", "iscsi_iqn": "iqn.2025-01.com.example:a784a28f" }, "capabilities": [ "xen-3.0-x86_64", "hvm-3.0-x86_32", "hvm-3.0-x86_32p", "hvm-3.0-x86_64", "" ], "cpu_configuration": {}, "sched_policy": "credit", "supported_bootloaders": [ "pygrub", "eliloader" ], "resident_VMs": [ "OpaqueRef:509e3b3e-4d43-452d-9225-6cbf2d0b9585 " ], "logging": {}, "PIFs": [ "OpaqueRef:d73acec0-8a55-4d47-a4ed-49472ca30f49 ", "OpaqueRef:cc001aea-f916-46af-ba42-d8b1c58e3cc3 ", "OpaqueRef:263afb14-5bba-4611-8bdc-898659169f3b " ], "suspend_image_sr": "OpaqueRef:NULL", "crash_dump_sr": "OpaqueRef:NULL", "crashdumps": [], "patches": [], "updates": [], "PBDs": [ "OpaqueRef:ed0b0406-bef6-4a40-8d64-238bef7af985 ", "OpaqueRef:94c58c56-e969-4d20-a890-0670509a7880 ", "OpaqueRef:4c7b2f97-ba37-476f-9d4d-bd54d73a60f6 ", "OpaqueRef:1e0af0c7-c567-491c-9be6-66a7fe8853b7 " ], "host_CPUs": [ "OpaqueRef:b51387c3-2a44-43dc-b56c-4d387e1abb42 ", "OpaqueRef:e72cc2ac-aa1a-4d39-bbff-bf2cddbe22a9 ", "OpaqueRef:11d9e571-e47a-4a2a-8426-00340c21ad9c ", "OpaqueRef:5f9d380b-3cd6-4166-885c-6b7cb80bebd1 ", "OpaqueRef:05ddf831-24d0-4f4c-947c-dfd9d8f333f5 ", "OpaqueRef:d6649684-128f-4d6f-b0d5-f28cbf0f2f47 ", "OpaqueRef:5b642435-ae8a-4547-b829-3cfba9c07da3 ", "OpaqueRef:8d3673c0-79ff-487a-a3f5-a7ab8c5998b4 ", "OpaqueRef:71534d89-5285-479a-ae63-66dea811a802 ", "OpaqueRef:4ec5fb6e-dac9-42d4-99c9-96144c72a4c4 ", "OpaqueRef:fcd181d8-7f5c-4585-b77a-bfe09de9e0be ", "OpaqueRef:6d29fc54-c0f7-4201-ae59-c5a173cee4fa ", "OpaqueRef:487834e7-cdb0-4e54-95ed-92655eff15ed ", "OpaqueRef:115458a5-4223-40ad-9a54-2fe0b3c05181 ", "OpaqueRef:e7df3acc-db7f-4635-8fc5-5167405db947 ", "OpaqueRef:747e9266-558b-44c0-855a-62936d004e56 " ], "cpu_info": { "cpu_count": "16", "socket_count": "1", "vendor": "AuthenticAMD", "speed": "3792.912", "modelname": "AMD Ryzen 7 5700G with Radeon Graphics", "family": "25", "model": "80", "stepping": "0", "flags": "fpu de tsc msr pae mce cx8 apic mca cmov pat clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm cmp_legacy abm sse4a misalignsse 3dnowprefetch bpext ibpb vmmcall fsgsbase bmi1 avx2 bmi2 erms rdseed adx clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 clzero xsaveerptr arat vaes vpclmulqdq rdpid", "features_pv": "1789c3f5-f6f83203-2bd1cbf5-040001e3-00000007-218c0329-00400600-00000000-20001005-00000000-00000000-00000004-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000", "features_hvm": "178bfbff-f6f83203-2fd3fbff-040085f7-0000000f-219c07a9-0040060c-00000000-310ed005-00000000-00000000-00000004-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000", "features_hvm_host": "178bfbff-f6d83203-2e500800-040001f7-0000000f-219c07a9-0040060c-00000000-310ed005-00000000-00000000-00000004-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000", "features_pv_host": "1789c3f5-f6d83203-2a500800-040001e3-00000007-218c0329-00400600-00000000-20001005-00000000-00000000-00000004-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000-00000000" }, "hostname": "xcpbackup", "address": "192.168.200.7", "metrics": "OpaqueRef:339bb82d-61a2-4597-8cd2-42451863e251 ", "license_params": { "restrict_vswitch_controller": "false", "restrict_lab": "false", "restrict_stage": "false", "restrict_storagelink": "false", "restrict_storagelink_site_recovery": "false", "restrict_web_selfservice": "false", "restrict_web_selfservice_manager": "false", "restrict_hotfix_apply": "false", "restrict_export_resource_data": "false", "restrict_read_caching": "false", "restrict_cifs": "false", "restrict_health_check": "false", "restrict_xcm": "false", "restrict_vm_memory_introspection": "false", "restrict_batch_hotfix_apply": "false", "restrict_management_on_vlan": "false", "restrict_ws_proxy": "false", "restrict_vlan": "false", "restrict_qos": "false", "restrict_pool_attached_storage": "false", "restrict_netapp": "false", "restrict_equalogic": "false", "restrict_pooling": "false", "enable_xha": "true", "restrict_marathon": "false", "restrict_email_alerting": "false", "restrict_historical_performance": "false", "restrict_wlb": "false", "restrict_rbac": "false", "restrict_dmc": "false", "restrict_checkpoint": "false", "restrict_cpu_masking": "false", "restrict_connection": "false", "platform_filter": "false", "regular_nag_dialog": "false", "restrict_vmpr": "false", "restrict_vmss": "false", "restrict_intellicache": "false", "restrict_gpu": "false", "restrict_dr": "false", "restrict_vif_locking": "false", "restrict_storage_xen_motion": "false", "restrict_vgpu": "false", "restrict_integrated_gpu_passthrough": "false", "restrict_vss": "false", "restrict_guest_agent_auto_update": "false", "restrict_pci_device_for_auto_update": "false", "restrict_xen_motion": "false", "restrict_guest_ip_setting": "false", "restrict_ad": "false", "restrict_nested_virt": "false", "restrict_live_patching": "false", "restrict_set_vcpus_number_live": "false", "restrict_pvs_proxy": "false", "restrict_igmp_snooping": "false", "restrict_rpu": "false", "restrict_pool_size": "false", "restrict_cbt": "false", "restrict_usb_passthrough": "false", "restrict_network_sriov": "false", "restrict_corosync": "true", "restrict_zstd_export": "false", "restrict_pool_secret_rotation": "false" }, "ha_statefiles": [], "ha_network_peers": [], "blobs": {}, "tags": [], "external_auth_type": "", "external_auth_service_name": "", "external_auth_configuration": {}, "edition": "xcp-ng", "license_server": { "address": "localhost", "port": "27000" }, "bios_strings": { "bios-vendor": "American Megatrends Inc.", "bios-version": "2424", "system-manufacturer": "ASUS", "system-product-name": "System Product Name", "system-version": "System Version", "system-serial-number": "System Serial Number", "baseboard-manufacturer": "ASUSTeK COMPUTER INC.", "baseboard-product-name": "PRIME A520M-A", "baseboard-version": "Rev X.0x", "baseboard-serial-number": "200975064800511", "oem-1": "Xen", "oem-2": "MS_VM_CERT/SHA1/bdbeb6e0a816d43fa6d3fe8aaef04c2bad9d3e3d", "oem-3": "Default string", "oem-4": "Default string", "oem-5": "DOLPHIN", "oem-6": "Default string", "oem-7": "Default string", "oem-8": "Default string", "oem-9": "Default string", "oem-10": "Default string", "hp-rombios": "" }, "power_on_mode": "", "power_on_config": {}, "local_cache_sr": "OpaqueRef:NULL", "chipset_info": { "iommu": "true" }, "PCIs": [ "OpaqueRef:e331e96d-25d0-4666-af9a-d66f613013ed ", "OpaqueRef:d53ccca2-932f-4981-9503-b51d7ee9d50b ", "OpaqueRef:ba20e488-e336-4b5f-b52d-66b6f63d59e0 ", "OpaqueRef:968c0ab8-3241-40c0-94ab-c632e0dfdf50 ", "OpaqueRef:7fe746b7-84cf-4540-93f1-de64469728db ", "OpaqueRef:75892aac-bc8b-4c02-b07d-b8f62d36c87e ", "OpaqueRef:61aeefda-e7d4-4b44-b6b7-43eac4d13bf6 ", "OpaqueRef:53537c6c-d240-4d23-bb77-39646f0cd71f ", "OpaqueRef:40f3f11b-b456-41af-96d3-f7d1ad70eab1 ", "OpaqueRef:1b7e67eb-ebd0-4460-8fea-4290926cd59f ", "OpaqueRef:1578400f-8d5c-4cb4-bd99-f913756b44ed ", "OpaqueRef:007e2815-d7a3-49cf-98d1-aef3c1cf029e " ], "PGPUs": [ "OpaqueRef:bf271c11-501f-467a-a9a7-74fe0be51aa5 " ], "PUSBs": [], "ssl_legacy": false, "guest_VCPUs_params": {}, "display": "enabled", "virtual_hardware_platform_versions": [ 0, 1, 2 ], "control_domain": "OpaqueRef:509e3b3e-4d43-452d-9225-6cbf2d0b9585 ", "updates_requiring_reboot": [], "features": [], "iscsi_iqn": "iqn.2025-01.com.example:a784a28f", "multipathing": false, "uefi_certificates": "", "certificates": [], "editions": [ "xcp-ng" ] }, "SR": { "uuid": "fbf160ab-cbfb-0504-6c7d-a159839c5bd4", "name_label": "16tb", "name_description": "", "allowed_operations": [ "vdi_enable_cbt", "vdi_list_changed_blocks", "unplug", "plug", "pbd_create", "vdi_disable_cbt", "update", "pbd_destroy", "vdi_resize", "vdi_clone", "vdi_data_destroy", "scan", "vdi_snapshot", "vdi_mirror", "vdi_create", "vdi_destroy", "vdi_set_on_boot" ], "current_operations": {}, "VDIs": [], "PBDs": [ "OpaqueRef:1e0af0c7-c567-491c-9be6-66a7fe8853b7 " ], "virtual_allocation": 0, "physical_utilisation": 2125824, "physical_size": 15873616670720, "type": "ext", "content_type": "user", "shared": false, "other_config": {}, "tags": [], "sm_config": { "devserial": "scsi-35000cca2c1e707a0" }, "blobs": {}, "local_cache_enabled": false, "introduced_by": "OpaqueRef:NULL", "clustered": false, "is_tools_sr": false }, "message": "IMPORT_ERROR_PREMATURE_EOF()", "name": "XapiError", "stack": "XapiError: IMPORT_ERROR_PREMATURE_EOF() at Function.wrap (file:///opt/xo/xo-builds/xen-orchestra-202501180626/packages/xen-api/_XapiError.mjs:16:12) at default (file:///opt/xo/xo-builds/xen-orchestra-202501180626/packages/xen-api/_getTaskResult.mjs:13:29) at Xapi._addRecordToCache (file:///opt/xo/xo-builds/xen-orchestra-202501180626/packages/xen-api/index.mjs:1068:24) at file:///opt/xo/xo-builds/xen-orchestra-202501180626/packages/xen-api/index.mjs:1102:14 at Array.forEach (<anonymous>) at Xapi._processEvents (file:///opt/xo/xo-builds/xen-orchestra-202501180626/packages/xen-api/index.mjs:1092:12) at Xapi._watchEvents (file:///opt/xo/xo-builds/xen-orchestra-202501180626/packages/xen-api/index.mjs:1265:14)" }

@Gheppy I am not an expert on the network part but I can help on the NBD part We added some info in this PR https://github.com/vatesfr/xen-orchestra/pull/6596, it should be merged in this form or another in master in a few days. It will give the user more info on the NBD usage and the cause (misconfiguration, or network error) Then if XO ( or the proxy) can't connect to the host through the NBD (for example with a network filtering/ routing), it will fall back to the reliable (but non parallelizable) api call Finally , the backup done with NBD or the legacy api call will produce exactly the same data so they are compatibles, but using the same target (as in the same directory , same remote and same VMs) for multiple job can lead to complex support tickets with interesting race conditions. I would advise to only use the same remote/directory only if the backups jobs does not concern the same VMs fbeauchamp opened this pull request in vatesfr/xen-orchestra closed feat(@xen-orchestra/backups): more information on nbd backups #6596

This is probably something for XO 6 then, let me ask @julien-f in the conversation

Yay! Thanks both @Gheppy for the report and @errellion for the feedback