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Bug
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Resolution: Unresolved
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Normal
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CNV v4.19.0
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Quality / Stability / Reliability
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3
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False
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False
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None
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CNV Storage 275, CNV Storage 276, CNV Storage 277, CNV Storage 278
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None
Description of problem:
If you configure multiple IOthreads, ex: ioThreadsPolicy: supplementalPool ioThreads: supplementalPoolThreadCount: 4 and the VM definition includes: isolateEmulatorThread: true the VM will fail to start with an error like: {"component":"virt-launcher","level":"error","msg":"cannot set CPU affinity on process 844: Invalid argument","pos":"virProcessSetAffinity:550","subcomponent":"libvirt","thread":"28","timestamp":"2025-06-23T14:51:41.816000Z"}
Version-Release number of selected component (if applicable):
4.19
How reproducible:
always
Steps to Reproduce:
1. Use highperformance template VM 2. Add supplementalPool & supplementalPoolThreadCount > 1
Actual results:
VM fails to start
Expected results:
At the least should probably warn / prevent this in a VM config validation check for now? Otherwise a "full" solution will take more work to pin IOthreads to additional host cpus beyond the single emulator thread...
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