2 ways to increase the size of the Xen virtual hard disk in Linux

Method One

The mirror provided by Stacklet is too small, only 10G, so it has to be manually added.

Add 40G to the mirror

The code is as follows	Copy Code
DD If=/dev/zero of=imcat.centos.img bs=1g conv=notrunc count=1 seek=40 1+0 Records in 1+0 Records out 1073741824 bytes (1.1 GB) copied, 51.9901, 20.7 MB/s

Scan for mirrored files:

The code is as follows	Copy Code
Losetup-d/dev/loop0 Losetup/dev/loop0 imcat.centos.img E2fsck-f/dev/loop0 Resize2fs/dev/loop0 E2fsck-f/dev/loop0 Losetup-d/dev/loop0

Method Two

To turn off the virtual machine:

The code is as follows	Copy Code
#/USR/SBIN/XM Shutdown VM01

Append 4GB space to the virtual machine image file (. img):

The code is as follows	Copy Code
# dd If=/dev/zero bs=1024k count=4096 >>/vm/vm01.img

Scan for mirrored files:

The code is as follows	Copy Code
#/sbin/e2fsck-f/vm/vm01.img

This time just increased the size of the mirrored file (hard disk), this image file is not a normal file, which contains a mount/umount loop file system, so you need to adjust the file system size, otherwise enter the virtual machine DF will find the size of the hard drive:

The code is as follows	Copy Code
#/sbin/resize2fs/vm/vm01.img

To restart the Xen virtual machine:

The code is as follows	Copy Code
#/USR/SBIN/XM Create Vm01

To view the size of your hard disk after entering the virtual machine:

code is as follows	copy code
#/usr/sbin /XM console vm01 # df-h