If you use GDS on the KVM guest, pay attention to the following points when you add a virtual disk to the KVM guest:
For a disk to be added to a guest, specify with the by-id name.
Add the disk as a virtual disk without dividing it. If a partition or a file is added as the virtual disk, GDS cannot manage the virtual disk.
For the device attribute of a disk to be registered with a class on a guest, set the following value:
libvirt package of the host OS | device attribute |
|---|---|
libvirt-0.9.4-23.el6_2.3 or earlier | disk |
libvirt-0.9.4-23.el6_2.4 or later | lun |
Information
You can check the version of the libvirt package with the rpm(8) command.
# rpm -qi libvirt |
When you add a virtual disk to a guest by using the Virtual Machine Manager (virt-manager), the value of the device attribute will be set to "disk."
For virtio-SCSI device, set "lun" to the value of the device attribute. [4.3A30 or later]
Note
In the following cases, you need to change the value of the device attribute from disk to lun.
When you add a virtual disk by using the Virtual Machine Manager (virt-manager) in the environments where libvirt-0.9.4-23.el6_2.4 or later is applied.
When you upgrade the libvirt package to libvirt-0.9.4-23.el6_2.4 or later.
Set the device attribute in the guest configuration file (/etc/libvirt/qemu/guest_name.xml) on a host OS. When you change the device attribute, stop a guest OS beforehand. For the method of changing the device attribute is as follows:
# virsh edit guest_name |
Example before change
:
<disk type='block' device='disk'>
<driver name='qemu' type='raw'/>
<source dev='/dev/disk/by-id/scsi-1FUJITSU_30000085002B'/>
<target dev='vdb' bus='virtio'/>
<shareable/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</disk>
: |
Example after change
:
<disk type='block' device='lun'>
<driver name='qemu' type='raw'/>
<source dev='/dev/disk/by-id/scsi-1FUJITSU_30000085002B'/>
<target dev='vdb' bus='virtio'/>
<shareable/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</disk>
: |
