Public bug reported:
Description:
Currently, if a boot request contains non-live-migratable PCI devices,
the system proceeds with scheduling live migration before eventually
failing. This leads to unnecessary resource consumption.
Expected Behavior:
The system should detect non-live-migratable PCI devices before
scheduling the migration and fail immediately, preventing unnecessary
scheduling attempts.
Actual Behavior:
The system schedules live migration before checking for non-migratable
PCI devices, leading to wasted resources and delayed failure.
Steps to Reproduce:
Submit a boot request containing non-live-migratable PCI devices.
Observe that the system proceeds with scheduling live migration.
Eventually, the migration fails due to the non-migratable PCI devices.
Proposed Fix:
Move the existing checks from the conductor earlier in the process,
ideally before the scheduling part, so the request fails immediately.
Note:
This bug could be addressed as part of the refactoring of the migration code
path, which currently consists of two separate code paths and should ideally be
unified into one.
** Affects: nova
Importance: Medium
Status: Confirmed
** Changed in: nova
Status: New => Confirmed
** Changed in: nova
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/2103631
Title:
Optimize Live Migration Scheduling by Preemptively Failing Non-
Migratable PCI Requests
Status in OpenStack Compute (nova):
Confirmed
Bug description:
Description:
Currently, if a boot request contains non-live-migratable PCI devices,
the system proceeds with scheduling live migration before eventually
failing. This leads to unnecessary resource consumption.
Expected Behavior:
The system should detect non-live-migratable PCI devices before
scheduling the migration and fail immediately, preventing unnecessary
scheduling attempts.
Actual Behavior:
The system schedules live migration before checking for non-migratable
PCI devices, leading to wasted resources and delayed failure.
Steps to Reproduce:
Submit a boot request containing non-live-migratable PCI devices.
Observe that the system proceeds with scheduling live migration.
Eventually, the migration fails due to the non-migratable PCI devices.
Proposed Fix:
Move the existing checks from the conductor earlier in the process,
ideally before the scheduling part, so the request fails immediately.
Note:
This bug could be addressed as part of the refactoring of the migration code
path, which currently consists of two separate code paths and should ideally be
unified into one.
To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/2103631/+subscriptions
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