XEN7 -> XCP83 VM migration

[olivierlambert]

"XEN7": you mean XenServer 7.0 or which version exactly?

[TrapoSAMA]

@olivierlambert

Sorry, XEN7 is Xenserver 7.0 Patch 092

[olivierlambert]

Okay so I assume "XenServer 7.0" with patch XS70E092 applied.

IIRC, the gap is too big, so you need either a XenServer 8.0 or 8.1 to migrate first, then you can live migrate to XCP-ng 8.3.

The alternative is to upgrade in place, but it's a big leap too. I would first make a backup of those VMs to be on the safe side.

See https://docs.xcp-ng.org/installation/upgrade/#-upgrade-from-xenserver

[TrapoSAMA]

@olivierlambert
Hi!

i need "move" some specific VM not upgrade the pool in this moment.

is possible?

Thx.

pd: export/import is a valid option but take double of time and extra space...

[olivierlambert]

Then use "warm migration" or create a CR job in Xen Orchestra with your VM source on XenServer 7 targeting your XCP-ng 8.3 host. This way, you can validate if they boot on destination.

[TrapoSAMA]

@olivierlambert

Hi! i use XO free in this moment. CR jobs is only available with support o free test.

I try warm migration connecting Xen7 and XCP83. This part work well, i see both pools/hosts connected.

When try migrate VM from Xen7 to XCP, XO show this small error:

INTERNAL_ERROR(Xmlrpc_client.Connection_reset)
This is a XenServer/XCP-ng error

but whe check is a more log error:

vm.migrate
{
"vm": "dfaca34a-a27d-e6bc-d3b0-72cc9a8cd17b",
"mapVifsNetworks": {
"9863e51e-9edf-4072-65cb-5965779d2cbe": "944cf7f0-9eb5-e6bf-023e-f09eebd6310c"
},
"migrationNetwork": "944cf7f0-9eb5-e6bf-023e-f09eebd6310c",
"sr": "27259ba3-dff8-49b9-9898-77049ac1f296",
"targetHost": "cb7b3482-51d1-4fc8-9bfa-a0105e48e0c2"
}
{
"code": "INTERNAL_ERROR",
"params": [
"Xmlrpc_client.Connection_reset"
],
"task": {
"uuid": "4e35f77a-11a5-1a46-d035-946fbbadba74",
"name_label": "Async.VM.assert_can_migrate",
"name_description": "",
"allowed_operations": [],
"current_operations": {},
"created": "20260728T19:15:25Z",
"finished": "20260728T19:15:25Z",
"status": "failure",
"resident_on": "OpaqueRef:1b81fd5a-40ef-04f8-527c-72596400c091",
"progress": 1,
"type": "<none/>",
"result": "",
"error_info": [
"INTERNAL_ERROR",
"Xmlrpc_client.Connection_reset"
],
"other_config": {},
"subtask_of": "OpaqueRef:NULL",
"subtasks": [],
"backtrace": "(((process"xapi @ xenserver14")(filename http-svr/xmlrpc_client.ml)(line 306))((process"xapi @ xenserver14")(filename lib/pervasiveext.ml)(line 22))((process"xapi @ xenserver14")(filename lib/pervasiveext.ml)(line 26))((process"xapi @ xenserver14")(filename lib/pervasiveext.ml)(line 22))((process"xapi @ xenserver14")(filename rbac.ml)(line 236))((process"xapi @ xenserver14")(filename server_helpers.ml)(line 82)))"
},
"message": "INTERNAL_ERROR(Xmlrpc_client.Connection_reset)",
"name": "XapiError",
"stack": "XapiError: INTERNAL_ERROR(Xmlrpc_client.Connection_reset)
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:1078:24)
at file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1112:14
at Array.forEach (<anonymous>)
at Xapi._processEvents (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1102:12)
at Xapi._watchEvents (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/index.mjs:1275:14)"
}

[acebmxer]

@TrapoSAMA

You can build XO from sources and have full access to all. You may use my script if you like - https://github.com/acebmxer/install_xen_orchestra

[TrapoSAMA]

@acebmxer

Hi!! install and working.

I try with disaster recovery option to copy from XEN 7.0 to XCP 8.3.0 and job work well.

how to start the VM after that ? onLy force?

THX.

[olivierlambert]

Yes, you can force start and remove the backup job and that's it.

[TrapoSAMA]

@olivierlambert

VM's now in XCP