Migration doesn't work in XCP-ng Centar after successful backup with Xen Orchestra

nicols

After performing backup job, options "migrate_send" and "pool_migrate" disappear from "allowed-operations" parametar. In such state, VM can be migrated with Xen Orchestra and xe toolstack (CLI), but cannot be migrated from XCP-NG Centar.

Before backup job:

allowed-operations (SRO): changing_dynamic_range; migrate_send; pool_migrate; changing_VCPUs_live; suspend; hard_reboot; hard_shutdown; clean_reboot; clean_shutdown; pause; checkpoint; snapshot
blocked-operations (MRW):

during backup:

allowed-operations (SRO): changing_dynamic_range; changing_VCPUs_live; suspend; hard_reboot; hard_shutdown; clean_reboot; clean_shutdown; pause; checkpoint; snapshot
blocked-operations (MRW): migrate_send: VM migration is blocked during backup; pool_migrate: VM migration is blocked during backup

after backup is finished:

allowed-operations (SRO): changing_dynamic_range; changing_VCPUs_live; suspend; hard_reboot; hard_shutdown; clean_reboot; clean_shutdown; pause; checkpoint; snapshot
blocked-operations (MRW):

If we perform reset of XAPI toolstack, everything is OK (options "migrate_send" and "pool_migrate" are back on "allowed-operations"). Also, if we perform migration with Xen Orchestra or power cycle VM, everything works temporarily, until next backup job.

We have latest Xen Orchestra from sources (Xen Orchestra: commit 0e6bc, Master: commit 0e6bc).
This bug was also present on older Xen Orchestra (also from sources, installed at 19.06.2024).
XCP-ng Centar is also latest release (20.04.01.33). XCP-ng Pool is at 8.2, all updates applied.
We use Delta backups, and did a test with creating new job (with just one VM).

Best regards!

nicols

Probably related and/or similar (but not the same) as: https://xcp-ng.org/forum/topic/9087/migrate-vm-disk-operation-blocked

Danp

Hi @nicols,

Thanks for the report. I believe that our developers are already investigating this issue.

Regards,
Dan

Bastien Nollet

Hi @nicols ,

As Dan said, we are indeed investigation this issue, and we will try to provide a fix during the next weeks. We will keep you informed.

Regards

julien-f

Hello all!

It should be fixed https://github.com/vatesfr/xen-orchestra/commit/72592a54d2225d5368a3410e4b3c19039f8e5df1

0

b-Nollet committed to vatesfr/xen-orchestra

fix(backups): correctly update allowed_operations - temporary fix (#7924)

Fixes https://xcp-ng.org/forum/post/81327

`allowed_operations` are currently not updated correctly when `blocked_operations` are modified, which causes backup jobs to remove `migrate_send` and `pool_migrate` from VM's `allowed_operations`. This commit fixes that, until `allowed_operations` updates correctly again.