XCP-ng 8.3 updates announcements and testing

[MajorP93]

@gleh Installed those RC packages in my test environment.
Tested basic operation. Looks good so far.
(Booted, all 3 SR connected, VMs able to start, both VHD and QCOW2)
Best regards

[flakpyro]

Installed on my usual hosts without issues. I am only making limited use of QCOW2 however.

[gduperrey]

Thank you everyone for your tests and your feedback!

The updates are live now: https://xcp-ng.org/blog/2026/08/27/august-2026-updates-2-for-xcp-ng-8-3-lts/

[Andrew]

@gduperrey Installed and running. Rolling pool update worked.

[mthird]

First time rolling update worked for my pool. Woot!

[mthird]

Spoke to soon. While the updates succeeded, one of the nodes is rebooting every few minutes due to an HA self-fence.

[manilx]

This is a new one:

Updated all our 3 pools:

Backup via CLI, runs XOA

Then DR.

Tasks showed RPU on pool PRD instead of DR. RPU finished just fine but task stayed.

Then RPU on PRD. Task did not change. Finished also fine. task stayed.

[gduperrey]

@manilx If the pools are up to date, I would try restarting the XO VM to see if the task persists.

If it does persist, it might be best to open a separate topic for the XO team.

[manilx]

@gduperrey Restarted and the task persisted. Deleted it from the list.

[acebmxer]

1 out of 3 pools at work failed rolling pool update.

When I try to put host 2 into maintence mode to finish updates i get this error...

Support Ticket - Ticket#7763405

host.setMaintenanceMode
{
  "id": "60701efd-089c-4822-97c0-1a1057f3f9aa",
  "maintenance": true
}
{
  "code": "VM_REQUIRES_SR",
  "params": [
    "OpaqueRef:841e7606-d545-cb71-f67c-e48b5114a1e8",
    "OpaqueRef:0f356ee4-62f7-9608-8be5-df68d9a5cbb2"
  ],
  "task": {
    "uuid": "a24f5565-b2cb-f392-8095-1beceb7a4a17",
    "name_label": "Async.host.evacuate",
    "name_description": "",
    "allowed_operations": [],
    "current_operations": {},
    "created": "20260828T19:57:29Z",
    "finished": "20260828T19:57:29Z",
    "status": "failure",
    "resident_on": "OpaqueRef:43c121e7-4ba4-193b-1e41-08c0f7e15690",
    "progress": 1,
    "type": "<none/>",
    "result": "",
    "error_info": [
      "VM_REQUIRES_SR",
      "OpaqueRef:841e7606-d545-cb71-f67c-e48b5114a1e8",
      "OpaqueRef:0f356ee4-62f7-9608-8be5-df68d9a5cbb2"
    ],
    "other_config": {},
    "subtask_of": "OpaqueRef:NULL",
    "subtasks": [],
    "backtrace": "(((process xapi)(filename ocaml/xapi/xapi_host.ml)(line 629))((process xapi)(filename hashtbl.ml)(line 159))((process xapi)(filename hashtbl.ml)(line 165))((process xapi)(filename hashtbl.ml)(line 170))((process xapi)(filename ocaml/xapi/xapi_host.ml)(line 625))((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/rbac.ml)(line 228))((process xapi)(filename ocaml/xapi/rbac.ml)(line 238))((process xapi)(filename ocaml/xapi/server_helpers.ml)(line 78)))"
  },
  "message": "VM_REQUIRES_SR(OpaqueRef:841e7606-d545-cb71-f67c-e48b5114a1e8, OpaqueRef:0f356ee4-62f7-9608-8be5-df68d9a5cbb2)",
  "name": "XapiError",
  "stack": "XapiError: VM_REQUIRES_SR(OpaqueRef:841e7606-d545-cb71-f67c-e48b5114a1e8, OpaqueRef:0f356ee4-62f7-9608-8be5-df68d9a5cbb2)
    at Function.wrap (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/_XapiError.mjs:16:12)
    at default (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/_getTaskResult.mjs:13:29)
    at Xapi._addRecordToCache (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1229:24)
    at file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1263:14
    at Array.forEach (<anonymous>)
    at Xapi._processEvents (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1253:12)
    at Xapi._watchEvents (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1460:14)"
}

SR are not connected to master host after reboot from updates. When try to connect them i get error...

pbd.connect
{
  "id": "e96ec5d8-c70f-c877-4263-f2cf763e7048"
}
{
  "code": "SR_BACKEND_FAILURE_108",
  "params": [
    "",
    "Unable to detect an NFS service on this target.",
    ""
  ],
  "task": {
    "uuid": "5574bfe5-1874-35f8-f53b-c9fc1abaebb5",
    "name_label": "Async.PBD.plug",
    "name_description": "",
    "allowed_operations": [],
    "current_operations": {},
    "created": "20260828T20:03:19Z",
    "finished": "20260828T20:03:22Z",
    "status": "failure",
    "resident_on": "OpaqueRef:43c121e7-4ba4-193b-1e41-08c0f7e15690",
    "progress": 1,
    "type": "<none/>",
    "result": "",
    "error_info": [
      "SR_BACKEND_FAILURE_108",
      "",
      "Unable to detect an NFS service on this target.",
      ""
    ],
    "other_config": {},
    "subtask_of": "OpaqueRef:NULL",
    "subtasks": [],
    "backtrace": "(((process xapi)(filename ocaml/xapi-idl/storage/storage_interface.ml)(line 455))((process xapi)(filename src/lib/idl.ml)(line 558))((process xapi)(filename ocaml/xapi/storage_utils.ml)(line 148))((process xapi)(filename lib/backtrace.ml)(line 251))((process xapi)(filename ocaml/xapi/xapi_pbd.ml)(line 196))((process xapi)(filename ocaml/xapi/message_forwarding.ml)(line 141))((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/message_forwarding.ml)(line 6061))((process xapi)(filename ocaml/xapi/rbac.ml)(line 228))((process xapi)(filename ocaml/xapi/rbac.ml)(line 238))((process xapi)(filename ocaml/xapi/server_helpers.ml)(line 78)))"
  },
  "message": "SR_BACKEND_FAILURE_108(, Unable to detect an NFS service on this target., )",
  "name": "XapiError",
  "stack": "XapiError: SR_BACKEND_FAILURE_108(, Unable to detect an NFS service on this target., )
    at Function.wrap (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/_XapiError.mjs:16:12)
    at default (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/_getTaskResult.mjs:13:29)
    at Xapi._addRecordToCache (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1229:24)
    at file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1263:14
    at Array.forEach (<anonymous>)
    at Xapi._processEvents (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1253:12)
    at Xapi._watchEvents (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1460:14)"
}