XEN7 -> XCP83 VM migration

olivierlambert

Hi,

Can you be a bit more specific? Are you migrating a VM from XenServer 7.0 to XCP-ng 8.3?

TrapoSAMA

Im trying to migrate a VM from XEN7 to XCP, like live migration and show this error. I try in cli with similar error

xe vm-migrate uuid=UUID remote-master=IP remote-username=root remote-password=PASSWORD
Performing a Storage XenMotion migration. Your VM's VDIs will be migrated with the VM.
The server failed to handle your request, due to an internal error. The given message may give details useful for debugging the problem.
message: INTERNAL_ERROR: [ Xmlrpc_client.Connection_reset ]

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.