When using Interrupt Remapping on some servers, you may experience vHBAs and other PCI devices stop responding in ESXi 6.0.x, ESXi 5.x and ESXi/ESX 4.1
This issue should be solved by server vendors releasing fixed BIOS version but if there is not a fix available you can use following workaround until new BIOS is released.
Disabling Intel VT-d Interrupt Remapping:
Disabling all VT-d features:
Advanced setting VMkernel.Boot.noIOMMU = unchecked = 0
For more info look at https://kb.vmware.com/kb/1030265
This issue should be solved by server vendors releasing fixed BIOS version but if there is not a fix available you can use following workaround until new BIOS is released.
Disabling Intel VT-d Interrupt Remapping:
ESX/ESXi 4.1:
esxcfg-advcfg -k TRUE
iovDisableIR
(reboot)
ESXi 5.0:
esxcli system settings kernel
set --setting=iovDisableIR -v TRUE
(reboot)
Disabling all VT-d features:
Advanced setting VMkernel.Boot.noIOMMU = unchecked = 0
For more info look at https://kb.vmware.com/kb/1030265
2 comments:
Hi David,
will the configuration impact the software SMI control port 0xb2?
Thanks,
Rajib.
To be honest I don't know what would be impact on SMI however this is just a workaround in situations when Interrupt Remapping causing some issues. In other words, you should not use it by default anyway.
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