Shulou(Shulou.com)06/01 Report--

Note: it is recommended to add a virtual disk file and then add lvm logical volumes to the virtual machine to increase disk space. The creation process is as follows.

1. Dd creates a disk file

# dd if=/dev/sdb1 bs=1024M count=6 > / data/dd3.img

two。 Shut down the dd virtual machine

Xm shutdown dd

3. Modify the new virtual machine profile

# vi / etc/xen/dd

# modify instructions:

(1) name

(2) uuid changes the last few data.

(3) change the disk to the actual path, and pay attention to the disk number when adding a new disk.

(4) vif modifies the MAC address of the network card to change the last few data

Name = "dd"

Uuid = "cc49eaea-fb0c-5239-c055-bdafcf209cab" 3a4 43a

Maxmem = 512

Memory = 512

Vcpus = 1

Bootloader = "/ usr/bin/pygrub"

On_poweroff = "destroy"

On_reboot = "restart"

On_crash = "restart"

Disk = ["tap:aio:/data/dd.img,xvda,w", "tap:aio:/data/dd3.img,xvdb,w"]

Vif = ["mac=00:16:3e:44:ee:07,bridge=xenbr1,script=vif-bridge"]

Note: if you use LVM logical volumes, use the following parameters, and use logical volumes in a large number of xen virtualized environments, which will maximize disk performance.

Disk = ["tap:aio:/data/test01.img,xvda,w", "phy:/dev/lvmdata/var01,xvdb,w"]

4. Start the virtual machine

5. Enter the virtual machine through the console

(1) View the newly added virtual disk

View logical volume size

Df-h

(2) start zoning

Fdisk / dev/xvdb

N

P

one

T

8e

W

# partprobe this statement failed

(3) create a physical volume

View volume groups, logical volumes

Vgs

Lvs

Create physical volumes and extend physical volume groups

Pvcreate / dev/xvdb1

Vgextend VolGroup / dev/xvdb1

Extended logical Volume

If the address of the logical volume is not found, press tab

Lvextend-l + 100%FREE / dev/VolGroup/lv_root

6. Extended disk partition

# resize2fs / dev/VolGroup/lv_root

Finally, the disk space has been expanded.

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