PCI插槽号和CVM

When OS boots during the POST process the local devices are enumerated (checked for presence and size). If an expected device is found at the PCI slot that is a failure of the test.\u00a0<\/span><\/p>

In AHV deployments, the Controller VM (CVM) runs as a VM and disks are presented using PCI passthrough. That means that if AHV PCI devices enumeration has changed CVM may not be aware of the fact and attempt to direct I\/O to the devices that are no longer accessible via known PCI bus and slot.\u00a0<\/span><\/p>

This can happen after hardware replacement on an AHV host and the CVM will not boot or will boot with only part of the expected devices accessible.\u00a0<\/span><\/p>

Compare PCI slot numbers of SCSI controllers on AHV host and the CVM and update the enumeration of the devices on the CVM.\u00a0<\/span><\/p>

For more details look at\u00a0<\/span>KB-7154 AHV | CVM might not boot after hardware replacement due to PCI re-numbering<\/span><\/a><\/p>","quoteUsername":"Alona","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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