Vsphere Xfer failed "DEVICE_ALREADY_EXISTS"

jebrown

So I've already transferred 31 other machines but had one fail due to a network interruption.... this was a couple of weeks ago and now I'm back to transferring, when I retry this one I get an error that the device already exists but I cannot find any drives in my iscsi storage nor is it listed in the XCP console or XOA console... How do I clean this up so I can transfer

 "succeeded": {},
  "message": "DEVICE_ALREADY_EXISTS(1)",
  "name": "XapiError",
  "stack": "XapiError: DEVICE_ALREADY_EXISTS(1)
    at Function.wrap (file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/_XapiError.mjs:16:12)
    at file:///usr/local/lib/node_modules/xo-server/node_modules/xen-api/transports/json-rpc.mjs:38:21
    at runNextTicks (node:internal/process/task_queues:60:5)
    at processImmediate (node:internal/timers:454:9)
    at process.callbackTrampoline (node:internal/async_hooks:130:17)"

olivierlambert

Is this VM had any specific configuration? Like multiple CD drive or something?

jebrown

no nothing special,
windows 2019 datacenter server with 3 drives 1GB, 60GB, 80GB no other drives or passthrough devices mounted.
I've moved several others with the exact same configuration and this one was in process when we had a network failure a few weeks ago... made it to about 30% complete at that time. Now when I try, it tells me it already exists but I cannot find where its located. I checked my shared SR (iscsi) looked in XOA under vm's and checked xcp-ng host to see if it was listed.

XCP-NG V8.3
XOA V5.100.2

olivierlambert

I wonder if it's creating a device at the same position twice or something. IIRC, this error is raised when you try to create a VIF or a VBD at the same device position (device ID).

What's your 1GiB drive?

@florent any idea why?

Danp

How many network interfaces are defined on this VM?

jebrown

@olivierlambert the 1G drive is set up for some software licensing we have.

@Danp theres 10 VIF on that one

Danp

@jebrown For now, there is a limit of 7 network interface on a VM on XCP-ng/Xen Orchestra.

olivierlambert

10 VIFs could work but not out of the box, that's the issue. Try to remove some VIF and try again the import

jebrown

That was the issue! Thank you! I reduced it to 6 and the transfer is now running......... Will there be support for more than 7 VIF's or is there a way to add more than 7 now?

olivierlambert

You can add more via the CLI, see https://docs.xcp-ng.org/appendix/cli_reference/#vif-create

jebrown

Will adding by CLI cause any issues with migrations or backups?

olivierlambert

No it shouldn't.

jebrown

Ok, Thank you!