[CentOS-virt] Best practices for LVM and virtualization

Mathieu Baudier mbaudier at argeo.org
Wed Feb 10 13:52:59 UTC 2010

> You also need to tell the guest that a new device exists... Unless it
> (the guest) has some hotswap abilities....

Do you know how I can do that?

I reinstalled the guest (CentOS 5.4 x86_64, just as the host) with the
default non-desktop groups, but it still doesn't see when I attach a

I also try to disable SELinux, to no effect.

I've googling intensively around the concept of hotplug, hotswap, PCI,
HAL, etc. in relation to virsh/KVM/virtio but withotu success.

On the guest, lspci only shows on drive (the initial one I guess):

[root at localhost ~]# lspci
00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02)
00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II]
00:01.1 IDE interface: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II]
00:01.2 USB Controller: Intel Corporation 82371SB PIIX3 USB
[Natoma/Triton II] (rev 01)
00:01.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 03)
00:02.0 VGA compatible controller: Cirrus Logic GD 5446
00:03.0 Ethernet controller: Qumranet, Inc. Virtio network device
00:04.0 SCSI storage controller: Qumranet, Inc. Virtio block device
00:05.0 RAM memory: Qumranet, Inc. Virtio memory balloon

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