[one-users] KVM Qemu does not mount DATABLOCK.

[Steven Timm]

I've made something like this work, but I couldn't make the datablock as 
virtio.  If you call for a virtio datablock by default it comes up as 
/dev/vde, for which many kernels don't have the drivers.

So on mine, I declared OS image to be virtio / dev/vda,
swap to be virtio /dev/vdb
datablock to be ide /dev/hda
iso disk to be ide /dev/hdc.

Steve Timm



On Fri, 4 Mar 2011, Leong Marco wrote:

> Hi all,
>
> I have created a CentOS which is sized 2GB. I would like to add a DATABLOCK to it. However, the DATABLOCK cannot be found with fdisk -l (in the VM). It was able to mount the swap, but no the DATABLOCK.
>
> Here is the config file that I have. Via
> dumpxml in virsh:
> <domain type='kvm' id='3'>
>  <name>one-103</name>
>  <uuid>61d4e005-8fd1-c0b5-43f4-1f75596a8451</uuid>
>  <memory>1048576</memory>
>  <currentMemory>1048576</currentMemory>
>  <vcpu>1</vcpu>
>  <os>
>    <type arch='x86_64' machine='rhel5.4.0'>hvm</type>
>    <boot dev='hd'/>
>  </os>
>  <features>
>    <acpi/>
>  </features>
>  <clock offset='utc'/>
>  <on_poweroff>destroy</on_poweroff>
>  <on_reboot>restart</on_reboot>
>  <on_crash>destroy</on_crash>
>  <devices>
>    <emulator>/usr/bin/kvm</emulator>
>    <disk type='file' device='disk'>
>      <driver name='qemu' type='raw'/>
>      <source file='/srv/cloud/one/var/103/images/disk.0'/>
>      <target dev='hda' bus='virtio'/>
>    </disk>
>    <disk type='file' device='disk'>
>      <driver name='qemu' type='raw'/>
>      <source file='/srv/cloud/one/var/103/images/disk.1'/>
>      <target dev='hde' bus='virtio'/>
>    </disk>
>    <disk type='file' device='disk'>
>      <driver name='qemu' type='raw'/>
>      <source file='/srv/cloud/one/var/103/images/disk.2'/>
>      <target dev='hdd' bus='ide'/>
>    </disk>
>    <interface type='bridge'>
>      <mac address='02:00:ac:19:04:0c'/>
>      <source bridge='br0'/>
>      <target dev='vnet0'/>
>    </interface>
>  </devices>
> </domain>
>
> The definition file.
>
> CPU 	= 1
> MEMORY	= 1024
> NAME	= "Web Server"
>
> OS = [ ARCH = x86_64, ROOT=hda ]
>
> DISK = [ IMAGE = "base-centos-5.5-x86_64", bus = virtio, target = hda]
>
> DISK = [IMAGE = "5gb-image", bus = virtio]
>
> DISK = [TYPE = swap, SIZE= 1024,  target = hdd]
>
> FEATURES = [ACPI = yes]
>
> NIC = [	NETWORK = "Network", IP=172.25.4.12]
>
> Please, could anyone help one this. Since I have to prepare several VM on next week for other students to play inside it.
>
>
> Leong Marco
> leong.chou.kin at usj.edu.mo
>
>
>
>

-- 
------------------------------------------------------------------
Steven C. Timm, Ph.D  (630) 840-8525
timm at fnal.gov  http://home.fnal.gov/~timm/
Fermilab Computing Division, Scientific Computing Facilities,
Grid Facilities Department, FermiGrid Services Group, Group Leader.
Lead of FermiCloud project.