- 登录到XenServer。
- 修改虚拟机磁盘大小
修改storage 磁盘大小 - 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 -
遇到的问题
linux系统为centos7 时， 用 resize2fs 命令出现报错 resize2fs: Bad magic number in super-block while trying to open
xfs_growfs /dev/root_vg/root 用 xfs_growfs 代替命令 resize2fs
