nvme_driver: demote NVMe queues availability message from error to info

[yupavlen-ms]

There is a certain log message in Kusto
{"timestamp":"8.603712984s","level":"ERROR","target":"nvme_driver::driver","fields":{"message":"failed to create io queue, falling back","cpu":13,"fallback_cpu":11,"error":["no more io queues available"]}}
which is misleading error. Convert to informational message.

[mattkur]

Be careful - only demote this error if this is due to a lack of hardware resources from the device. Other failures should certainly be investigated, as they can signal problems. For example #530 is a downstream fix for failing to allocate queues due to insufficient memory.

[yupavlen-ms]

Thanks for pointing that out

[mattkur]

As of 2025-09-10, corrected internal tracking: Azure DevOps work item 58599758.