Unable to migrate VMs

fred974

Hi,

I get the following message when trying to migrate a VM from 1 host to another on 2 different datacentre

vm.migrate
{
  "vm": "8be08afd-f7c9-f044-661e-631b41b110b7",
  "mapVifsNetworks": {
    "ccba90a8-0e93-f0fe-80d7-816363036c97": "24c00a36-b0ee-2f9b-832e-6e3a26d53bc3"
  },
  "migrationNetwork": "24c00a36-b0ee-2f9b-832e-6e3a26d53bc3",
  "sr": "66eb4d5b-3f8b-4370-2cb6-f2ac42e69257",
  "targetHost": "9eebc91d-3277-4f13-948e-f964ecf548d2"
}
{
  "code": 21,
  "data": {
    "objectId": "8be08afd-f7c9-f044-661e-631b41b110b7",
    "code": "INTERNAL_ERROR"
  },
  "message": "operation failed",
  "name": "XoError",
  "stack": "XoError: operation failed
    at operationFailed (/opt/xo/xo-builds/xen-orchestra-202112150851/packages/xo-common/src/api-errors.js:21:32)
    at file:///opt/xo/xo-builds/xen-orchestra-202112150851/packages/xo-server/src/api/vm.mjs:483:15
    at Object.migrate (file:///opt/xo/xo-builds/xen-orchestra-202112150851/packages/xo-server/src/api/vm.mjs:470:3)
    at Api.callApiMethod (file:///opt/xo/xo-builds/xen-orchestra-202112150851/packages/xo-server/src/xo-mixins/api.mjs:307:20)"
}

I cannot find any clue for the reason why in that log. Could anyone please assist?

Thank you

Darkbeldin

@fred974 Hi fred974,

You should check if the VM is on static memory.

fred974

@darkbeldin said in Unable to migrate VMs:

You should check if the VM is on static memory.

This is what I have

I am not sure what you mean.

Darkbeldin

@fred974 Ok let me explain, when migrating a VM the hypervisor need to reduce the memory to the minimal setting you have define so in your case 2 Mo

Set your dynamic memory min to 2 Go and you should be fine.

fred974

@darkbeldin
I have set the dynamic to 2 GB

And I get this message:

vm.migrate
{
  "vm": "8be08afd-f7c9-f044-661e-631b41b110b7",
  "mapVifsNetworks": {
    "ccba90a8-0e93-f0fe-80d7-816363036c97": "24c00a36-b0ee-2f9b-832e-6e3a26d53bc3"
  },
  "migrationNetwork": "24c00a36-b0ee-2f9b-832e-6e3a26d53bc3",
  "sr": "66eb4d5b-3f8b-4370-2cb6-f2ac42e69257",
  "targetHost": "9eebc91d-3277-4f13-948e-f964ecf548d2"
}
{
  "code": 21,
  "data": {
    "objectId": "8be08afd-f7c9-f044-661e-631b41b110b7",
    "code": "INTERNAL_ERROR"
  },
  "message": "operation failed",
  "name": "XoError",
  "stack": "XoError: operation failed
    at operationFailed (/opt/xo/xo-builds/xen-orchestra-202201041455/packages/xo-common/src/api-errors.js:21:32)
    at file:///opt/xo/xo-builds/xen-orchestra-202201041455/packages/xo-server/src/api/vm.mjs:483:15
    at Object.migrate (file:///opt/xo/xo-builds/xen-orchestra-202201041455/packages/xo-server/src/api/vm.mjs:470:3)
    at Api.callApiMethod (file:///opt/xo/xo-builds/xen-orchestra-202201041455/packages/xo-server/src/xo-mixins/api.mjs:307:20)"
}

Darkbeldin

@fred974 Could you try to migrate the VM manually to see if the error better defined.

fred974

@darkbeldin said in Unable to migrate VMs:

Could you try to migrate the VM manually to see if the error better defined.

Sorry but how do I do that? is that at command line?

fred974

@Darkbeldin not sure if this help but when trying via xcp-ng centre, I get this:

Darkbeldin

@fred974 Yes from the VM host the basic CLI is something like

xe vm-migrate uuid=<VMuuid> host-uuid=<Hostuuid>

fred974

@darkbeldin

[15:37 srv-tri-xcptmp ~]# xe vm-migrate uuid=8be08afd-f7c9-f044-661e-631b41b110b7 host-uuid=9eebc91d-3277-4f13-948e-f964ecf548d2

Error: Host 9eebc91d-3277-4f13-948e-f964ecf548d2 not found

This is strange as the host is visible XO

From the host the VM is on, I can telnet the destination host

[15:47 srv-tri-xcptmp ~]# telnet 85.75.xxx.xx 443
Trying 85.75.xxx.xx...
Connected to 85.75.xxx.xx.
Escape character is '^]'.
^]

Darkbeldin

@fred974 Are you trying to migrate to the same pool or to another pool?

fred974

@darkbeldin said in Unable to migrate VMs:

@fred974 Are you trying to migrate to the same pool or to another pool?
I am migrating to another pool on another DC. I am using zerotier to link the hosts. But the issue also exist when exposing the destination host IP to the public.

fred974

When I add the hosting using its public IP, I have the same issue. It is added to XO, I can list the VM on the destination host. I cannot access its console tough. I tried via the official XOA and same error.

Darkbeldin

@fred974 Sorry not sure i understand, from which host to which host are you trying to migrate? are they on the same pool?

fred974

@darkbeldin said in Unable to migrate VMs:

@fred974 Sorry not sure i understand, from which host to which host are you trying to migrate? are they on the same pool?

I am trying to migrate 1 VM located in datacentre 1 to another host located on another datacentre on a completely different pool. There is 2 pools of 2 individual host.

Currently I am using XOA official from the host the VM reside. I added the destination host to that XOA via its public IP and I can see it in XOA but cannot access the console of the remote host from XOA for some reason.

The error at command line is saying that it cannot find the remote host, even tough it exist in XOA. Was I suppose to run the following command from the XOA server and not the host?

xe vm-migrate uuid=<VMuuid> host-uuid=<Hostuuid>

Darkbeldin

@fred974 No in the case of a remote pool you have to use other parameters.

xe vm-migrate vm=<vmuuid> remote-master=<remote pool master IP> remote-username=root remote-password=<password> vif:<uuid of the migration VIF>

fred974

@darkbeldin Do I need to specify the remote storage uuid?

fred974

@fred974 here is the error from command line

Performing a Storage XenMotion migration. Your VM's VDIs will be migrated with the VM.
Will migrate to remote host: srv-tri-xcp05, using remote network: MGNT_LAN. Here is the VDI mapping:
VDI dd2cc891-c44f-4dfe-9bfd-5887e73b5bf3 -> SR 66eb4d5b-3f8b-4370-2cb6-f2ac42e69257
The server failed to handle your request, due to an internal error. The given message may give details useful for debugging the problem.
message: Xmlrpc_client.Connection_reset

olivierlambert

Your connection is reset. Check XAPI logs on source and destination, also check you have enough memory and disk space in the dom0.

fred974

@olivierlambert said in Unable to migrate VMs:

also check you have enough memory and disk space in the dom0

On source or destination?