VM metadata import fail & stuck

[henri9813]

I have an updated pool.

I'm evacuating an host for update to another pool.

But the operation fail, and remains in the XO tasks

VM metadata import (on new-hypervisor) 0%

and in the VM.migrate api call detail.

vm.migrate
{
  "vm": "30bb4942-c7fd-a3b3-2690-ae6152d272c5",
  "mapVifsNetworks": {
    "7e1ad49f-d4df-d9d7-2a74-0d00486ae5ff": "b3204067-a3fd-bd19-7214-7856e637d076"
  },
  "migrationNetwork": "e31e7aea-37de-2819-83fe-01bd33509855",
  "sr": "3070cc36-b869-a51f-38ee-bd5de5e4cb6c",
  "targetHost": "36a07da2-7493-454d-836d-df8ada5b958f"
}
{
  "code": "INTERNAL_ERROR",
  "params": [
    "Http_client.Http_error(\"500\", \"{ frame = false; method = GET; uri = /export_metadata?export_snapshots=true&ref=OpaqueRef:75e166f7-5056-a662-f7ff-25c09aee5bec; query = [  ]; content_length = [  ]; transfer encoding = ; version = 1.0; cookie = [ (value filtered) ]; task = ; subtask_of = OpaqueRef:9976b5f2-3381-e79e-a6dd-0c7a20621501; content-type = ; host = ; user_agent = xapi/25.33; }\")"
  ],
  "task": {
    "uuid": "9c87e615-5dca-c714-0c55-5da571ad8fa5",
    "name_label": "Async.VM.assert_can_migrate",
    "name_description": "",
    "allowed_operations": [],
    "current_operations": {},
    "created": "20260131T08:16:14Z",
    "finished": "20260131T08:16:14Z",
    "status": "failure",
    "resident_on": "OpaqueRef:37858c1b-fa8c-5733-ed66-dcd4fc7ae88c",
    "progress": 1,
    "type": "<none/>",
    "result": "",
    "error_info": [
      "INTERNAL_ERROR",
      "Http_client.Http_error(\"500\", \"{ frame = false; method = GET; uri = /export_metadata?export_snapshots=true&ref=OpaqueRef:75e166f7-5056-a662-f7ff-25c09aee5bec; query = [  ]; content_length = [  ]; transfer encoding = ; version = 1.0; cookie = [ (value filtered) ]; task = ; subtask_of = OpaqueRef:9976b5f2-3381-e79e-a6dd-0c7a20621501; content-type = ; host = ; user_agent = xapi/25.33; }\")"
    ],
    "other_config": {},
    "subtask_of": "OpaqueRef:NULL",
    "subtasks": [],
    "backtrace": "(((process xapi)(filename ocaml/libs/http-lib/http_client.ml)(line 215))((process xapi)(filename ocaml/libs/http-lib/http_client.ml)(line 228))((process xapi)(filename ocaml/libs/http-lib/xmlrpc_client.ml)(line 375))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 24))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 39))((process xapi)(filename ocaml/xapi/importexport.ml)(line 313))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 24))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 39))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 24))((process xapi)(filename ocaml/libs/xapi-stdext/lib/xapi-stdext-pervasives/pervasiveext.ml)(line 39))((process xapi)(filename ocaml/xapi/xapi_vm_migrate.ml)(line 1920))((process xapi)(filename ocaml/xapi/message_forwarding.ml)(line 2551))((process xapi)(filename ocaml/xapi/rbac.ml)(line 229))((process xapi)(filename ocaml/xapi/rbac.ml)(line 239))((process xapi)(filename ocaml/xapi/server_helpers.ml)(line 78)))"
  },
  "message": "INTERNAL_ERROR(Http_client.Http_error(\"500\", \"{ frame = false; method = GET; uri = /export_metadata?export_snapshots=true&ref=OpaqueRef:75e166f7-5056-a662-f7ff-25c09aee5bec; query = [  ]; content_length = [  ]; transfer encoding = ; version = 1.0; cookie = [ (value filtered) ]; task = ; subtask_of = OpaqueRef:9976b5f2-3381-e79e-a6dd-0c7a20621501; content-type = ; host = ; user_agent = xapi/25.33; }\"))",
  "name": "XapiError",
  "stack": "XapiError: INTERNAL_ERROR(Http_client.Http_error(\"500\", \"{ frame = false; method = GET; uri = /export_metadata?export_snapshots=true&ref=OpaqueRef:75e166f7-5056-a662-f7ff-25c09aee5bec; query = [  ]; content_length = [  ]; transfer encoding = ; version = 1.0; cookie = [ (value filtered) ]; task = ; subtask_of = OpaqueRef:9976b5f2-3381-e79e-a6dd-0c7a20621501; content-type = ; host = ; user_agent = xapi/25.33; }\"))
    at XapiError.wrap (file:///etc/xen-orchestra/packages/xen-api/_XapiError.mjs:16:12)
    at default (file:///etc/xen-orchestra/packages/xen-api/_getTaskResult.mjs:13:29)
    at Xapi._addRecordToCache (file:///etc/xen-orchestra/packages/xen-api/index.mjs:1078:24)
    at file:///etc/xen-orchestra/packages/xen-api/index.mjs:1112:14
    at Array.forEach (<anonymous>)
    at Xapi._processEvents (file:///etc/xen-orchestra/packages/xen-api/index.mjs:1102:12)
    at Xapi._watchEvents (file:///etc/xen-orchestra/packages/xen-api/index.mjs:1275:14)"
}

My XO is up to date.

I already update the master, i'm processing the slave.

But neither the master ( updated ) nor the slave ( not updated ) can migrate VM to an updated pool.

Do you have an idea ?