How to increase acpiphp slots?

Posted by Eil on Server Fault See other posts from Server Fault or by Eil
Published on 2010-04-21T15:12:50Z Indexed on 2010/04/21 15:14 UTC
Read the original article Hit count: 257

Filed under:

linux

|

pci

|

hotplug

Hi,

Oh RHEL 5.5, there are 31 ACPI PCI hotplug slots by default:

acpiphp: Slot [1] registered
...
acpiphp: Slot [31] registered

Is there a way to increase this number? I haven't been able to find an argument to supply to modprobe, or a sysctl knob to tweak, but I know there must be ways to get more slots based on some Google sleuthing.

(For the curious, this is just preliminary experimentation to see how many virtual disks I can hot-add to a running KVM guest.)

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