怎样调整XenServer下面Linux虚拟机的磁盘大小

登录到XenServer。
修改虚拟机磁盘大小
xe vdi-resize uuid=17e350e3-1528-4e8f-965b-d33d352e73ed disk-size=40GiB

启动虚拟机

修改分区大小
fdisk /dev/xvda

The number of cylinders for this disk is set to 5221.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs

(e.g., DOS FDISK, OS/2 FDISK)

Command (m for help): p

Disk /dev/xvda: 42.9 GB, 42949672960 bytes
255 heads, 63 sectors/track, 5221 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

2610

20860402+
8e
Linux LVM

Command (m for help): Command (m for help): p
DOS Compatibility flag is not set

Command (m for help): d
Partition number (1-4): 2

Command (m for help): n
Command action

e

extended

p

primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (14-5221, default 14):
Using default value 14
Last cylinder or +size or +sizeM or +sizeK (14-5221, default 5221):
Using default value 5221

Command (m for help): t
Partition number (1-4): 2
Hex code (type L to list codes): 8e
Changed system type of partition 2 to 8e (Linux LVM)

Command (m for help): p

Disk /dev/xvda: 42.9 GB, 42949672960 bytes
255 heads, 63 sectors/track, 5221 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

5221

41833260

8e
Linux LVM

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.

WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
The kernel still uses the old table.
The new table will be used at the next reboot.
Syncing disks.

重启虚拟机：reboot

调整PV大小
pvs

PV

VG

Fmt
Attr PSize
PFree

/dev/xvda2 VolGroup00 lvm2 a-

19.88G

0

pvresize -v /dev/xvda2

Using physical volume(s) on command line

Archiving volume group "VolGroup00" metadata (seqno 3).

Resizing physical volume /dev/xvda2 from 636 to 1276 extents.

Resizing volume "/dev/xvda2" to 83666136 sectors.

Updating physical volume "/dev/xvda2"

Creating volume group backup "/etc/lvm/backup/VolGroup00" (seqno 4).

Physical volume "/dev/xvda2" changed

1 physical volume(s) resized / 0 physical volume(s) not resized

pvs

PV

VG

Fmt
Attr PSize
PFree

/dev/xvda2 VolGroup00 lvm2 a-

39.88G 20.00G

调整LV大小
lvs

LV

VG

Attr

LSize
Origin Snap%
Move Log Copy%
Convert

LogVol00 VolGroup00 -wi-ao 17.84G

LogVol01 VolGroup00 -wi-ao
2.03G

lvextend -l +100%FREE /dev/VolGroup00/LogVol00

Extending logical volume LogVol00 to 37.84 GB

Logical volume LogVol00 successfully resized

lvs

LV

VG

Attr

LSize
Origin Snap%
Move Log Copy%
Convert

LogVol00 VolGroup00 -wi-ao 37.84G

LogVol01 VolGroup00 -wi-ao
2.03G
调整分区大小
df -h
Filesystem

Size
Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00

5.7G
4.5G
950M
83% /
/dev/xvda1

99M

22M

73M
24% /boot
tmpfs

2.0G

0
2.0G

0% /dev/shm

resize2fs /dev/mapper/VolGroup00-LogVol00
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/mapper/VolGroup00-LogVol00 is mounted on /; on-line resizing required
Performing an on-line resize of /dev/mapper/VolGroup00-LogVol00 to 9920512 (4k) blocks.
The filesystem on /dev/mapper/VolGroup00-LogVol00 is now 9920512 blocks long.

df -h
Filesystem

Size
Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00

37G
4.5G

31G
13% /
/dev/xvda1

99M

22M

73M
24% /boot
tmpfs

2.0G

0
2.0G

0% /dev/shm

任务完成