创建KVM虚拟机

 

 

WINDOWS：

 

1.分析镜像

>>> import guestfs

>>> g = guestfs.GuestFS()

>>> g.add_drive_opts("/datapool/w2k3.qcow2")

>>> g.launth()

>>> root = g.inspect_os()

>>> root

['/dev/vda1']

>>> type = g.inspect_get_type(root[0])

>>> type

'windows'

>>> root_partition = g.inspect_get_roots()

>>> root_partition

['/dev/vda1']

>>> product_name = g.inspect_get_product_name(root[0])

>>> product_name

'Microsoft Windows Server 2003'

>>> system_root=g.inspect_get_windows_systemroot(root[0])

>>> system_root

'/WINDOWS'

>>> g.kill_subprocess()

 

2 . 准备Windows-Nic-ini

ipsetup:0

ip: 180.96.41.147

mask:255.255.255.0

gw:

mac:

ip:

mask:

gw:

mac:

 

3. virt-resize

virt-resize /datapool/w2k3.qcow2.bak /dev/vg/lv-created –expand /dev/vda1

 

4. 分新新卷，上传ini文件

                         g = guestfs.GuestFS()

                         g.add_drive_opts(“/dev/vg/lv-created”)

                         g.launch()

                         g.mount('/dev/vda1", '/')

                         g.upload(ini,'/WINDOWS/nicinfo.ini')

                         g.sync()

 

LINUX：

1.分析镜像

 

>>> g = guestfs.GuestFS()

>>> g.add_drive_opts("/datapool/cent6.qcow2.bak")

>>> g.launch()

>>> root = g.inspect_os()

>>> root

['/dev/VolGroup/lv_root']

>>> type = g.inspect_get_type(root[0])

>>> type

'linux'

>>> root_partition = g.inspect_get_roots()

>>> root_partition

['/dev/VolGroup/lv_root']

>>> product_name = g.inspect_get_product_name(root[0])

>>> product_name

'CentOS Linux release 6.0 (Final)'

>>> lvs = g.lvs()

>>> lvs

['/dev/VolGroup/lv_root', '/dev/VolGroup/lv_swap']

>>> vgs = g.vgs()

>>> vgs

['VolGroup']

>>> pvs = g.pvs_full()

>>> pvs

[{'pv_free': 0L, 'pv_uuid': 'RjdD6vFv1LjBgtamWKSoXbzJ4FyX3CcR', 'pv_attr': 'a--', 'pv_name': '/dev/vda2', 'pv_size': 20946354176L, 'pv_mda_count': 1L, 'pv_pe_count': 4994L, 'pv_pe_alloc_count': 4994L, 'pv_fmt': 'lvm2', 'pv_tags': '', 'dev_size': 20949499904L, 'pe_start': 1048576L, 'pv_used': 20946354176L, 'pv_mda_free': 520192L}]

>>> pvs[0]['pv_name'] 即 pv_partition

'/dev/vda2'

>>> mount_points=g.inspect_get_mountpoints(root[0])

>>> mount_points

[('/', '/dev/mapper/VolGroup-lv_root'), ('/boot', '/dev/vda1')]

 

Boot_partition = '/dev/vda1'

 

2 . 准备Linux- ifcfg-eth0

cat /etc/sysconfig/network-scripts/ifcfg-eth0

# Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+

DEVICE=eth0

ONBOOT=yes

BOOTPROTO=static

IPADDR=192.168.93.2

NETMASK=255.255.255.0

GATEWAY=192.168.93.1

HWADDR=

 

3. virt-resize

        有pv-partion:

virt-resize /datapool/cent6.qcow2.bak /dev/vg/lv-created –expand /dev/vda2 –lv-expand /dev/VolGroup/lv_root

 

4. 分新新卷，上传ini文件

 

                         g = guestfs.GuestFS()

                         g.add_drive_opts(“/dev/vg/lv-created”)

                         g.launch()

                         g.mount(“/dev/VolGroup/lv_root”, '/')

                         g.mount('/dev/vda1'”, '/boot')

                         tmp=g.list_devices()

                         g.grub_install('/',tmp[0])

                         g.upload(nic_cfg[k],'/etc/sysconfig/network-scripts/ifcfg-eth%d'%k)

 

 

COMPUTENODE

之后，对于linux和windows处理的流程是一样的：

1. virt-install命令创建虚拟机，并生成相应的XML文件。

2. 修改XML文件，修改devices->graphics->passwd及video等其他参数。

3. virsh define xml; virsh start name 开启虚拟机。

4. 从XML文件中获取vncport和uuid，更新数据库中的instance信息（s_Id,vnc_pwd, vnc_port, status, uuid）。