[SMAPIv3] VDI.copy generates an error, then logs at debug level it is safe to ignore

[ydirson]

While testing xe vdi-copy into-vdi-uuid= on a new SMAPIv3 driver I get the following error. Obviously when disabling debug logs the user will only see the error.
Maybe the error could be avoided altogether?

This is xapi v23.31.0

Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] VBD.unplug R:74d78b5326c6 failed with exception Server_error(DEVICE_ALREADY_DETACHED, [ OpaqueRef:6ea85864-87b7-3d77-d919-cae6529c8cd5 ])
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] Raised Server_error(DEVICE_ALREADY_DETACHED, [ OpaqueRef:6ea85864-87b7-3d77-d919-cae6529c8cd5 ])
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 1/17 xapi Raised at file ocaml/xapi/xapi_vbd_helpers.ml, line 312
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 2/17 xapi Called from file ocaml/xapi/xapi_vbd_helpers.ml, line 321
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 3/17 xapi Called from file ocaml/xapi/message_forwarding.ml, line 5528
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 4/17 xapi Called from file ocaml/xapi/message_forwarding.ml, line 211
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 5/17 xapi Called from file ocaml/xapi/message_forwarding.ml, line 215
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 6/17 xapi Called from file lib/xapi-stdext-pervasives/pervasiveext.ml, line 24
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 7/17 xapi Called from file lib/xapi-stdext-pervasives/pervasiveext.ml, line 38
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 8/17 xapi Called from file ocaml/xapi/helpers.ml, line 1651
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 9/17 xapi Called from file ocaml/xapi/message_forwarding.ml, line 5536
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 10/17 xapi Called from file ocaml/xapi/message_forwarding.ml, line 5628
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 11/17 xapi Called from file ocaml/xapi/rbac.ml, line 189
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 12/17 xapi Called from file ocaml/xapi/rbac.ml, line 198
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 13/17 xapi Called from file ocaml/xapi/server_helpers.ml, line 75
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 14/17 xapi Called from file ocaml/xapi/server_helpers.ml, line 94
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 15/17 xapi Called from file lib/xapi-stdext-pervasives/pervasiveext.ml, line 24
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 16/17 xapi Called from file lib/xapi-stdext-pervasives/pervasiveext.ml, line 38
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace] 17/17 xapi Called from file ocaml/libs/log/debug.ml, line 250
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [error||392711 /var/lib/xcp/xapi|dispatch:VBD.unplug D:8a1013966584|backtrace]
Mar 15 13:29:21 xcpng83-bzkcpvhy xapi: [debug||392697 /var/lib/xcp/xapi|VDI.copy R:e4d375dd2f0c|attach_helpers] safe_unplug caught DEVICE_ALREADY_DETACHED: this is safe to ignore