QA:Testcase Virtualization Attach/Detach a SCSI device to guest

Setup

1. make sure install qemu-img:

   #yum install qemu-img

2. if the guest is rhel5, execute the following command in guest before attach-disk:

   # modprobe acpiphp

How to test

1. # virsh start demo

2. # qemu-img create  foo.img 10M

3. Create a disk desription file as following XML:

   # cat disk.xml

   <disk type='file' device='disk'>

         <driver name='qemu' type='raw'/>

         <source file=''/var/lib/libvirt/images/foo.img''/>

         <target dev='sda' bus='scsi'/>

   </disk>

4. # virsh attach-device demo disk.xml

5. Run command fdisk -l in guest
6. Restart demo and check:

   # virsh shutdown demo

   # virsh start demo

   log in guest:

   # fdisk -l

7. # virsh detach-disk demo sda

8. Run command fdisk -l in guest

Expected Results

1. step 4: Device attached successfully
2. step 5: check the disk device is existing.
3. step 6: boot successfully and check the disk device is existing.
4. step 7: Disk detached successfully
5. step 8: check the disk device is not existing.