How to Add a Hard Disk Space to Oracle VM

 

1. Create a 30GB file ,

dd if=/dev/zero of=fmw11g.img  bs=1024k count=30000

2. Add the file /OVM/linuxvm/fmw11g.img
to the vm.cfg file , for example ,

disk = ['file:/OVM/linuxvm/System.img,xvda,w','file:/OVM/linuxvm/fmw11g.img,xvdb,w',]

3. Now start the VM by using the command ,
xm create vm.cfg

4. In the fdisk -l command , you should be able to see this file ,

For example ,

fdisk -l

Disk /dev/xvda: 12.8 GB, 12884901888 bytes
255 heads, 63 sectors/track, 1566 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

    Device Boot      Start         End      Blocks   Id  System
/dev/xvda1   *           1          13      104391   83  Linux
/dev/xvda2              14        1264    10048657+  83  Linux
/dev/xvda3            1265        1566     2425815   82  Linux swap / Solaris

Disk /dev/xvdb: 31.4 GB, 31457280000 bytes
255 heads, 63 sectors/track, 3824 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

5. using fdisk /dev/xvdb command create a partion and format that partition
using the command ,

mkfs.ext3 /dev/xvdb1

6. After this mount this file system by adding this entry to the /etc/fstab file ,
/dev/xvdb1             /fmw11g                   ext3    defaults        1 2

run the command , mount -a