今天公司同事過來給我說要求把公司的exsi服務器上的一台虛擬機硬盤擴大,好吧,連上exsi后,直接在原來的硬盤40G上加了20G,等我添加完后,同事才告訴我那台是linux的系統,好吧,只能連上ssh來更改了.下面就是我用另外一台虛擬機來做的實驗.
系統:centos 5.x
1.exsi擴容圖
擴容前:
擴容后:
2.分區前准備
yum -y install parted
ps:CentOS最小化安裝默認是沒有partprobe命令,所以我們要用yum安裝
3.查看目前硬盤狀態
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
38G 3.2G 33G 9% /
/dev/sda1 99M 12M 82M 13% /boot
tmpfs 506M 0 506M 0% /dev/shm
[root@localhost ~]# fdisk -l
Disk /dev/sda: 64.4 GB, 64424509440 bytes
255 heads, 63 sectors/track, 7832 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 5221 41833260 8e Linux LVM
4.開始對硬盤擴容
[root@localhost ~]# fdisk /dev/sda
The number of cylinders for this disk is set to 7832.
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): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 3
First cylinder (5222-7832, default 5222):
Using default value 5222
Last cylinder or +size or +sizeM or +sizeK (5222-7832, default 7832):
Using default value 7832
Command (m for help): wq
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.
然后再執行:
[root@localhost ~]# fdisk -l
Disk /dev/sda: 64.4 GB, 64424509440 bytes
255 heads, 63 sectors/track, 7832 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 5221 41833260 8e Linux LVM
/dev/sda3 5222 7832 20972857+ 8e Linux
可以看到sda3已經出現了,表示為可用的狀態.下面繼續:
[root@localhost ~]# partprobe
[root@localhost ~]# partprobe /dev/sda3
ps:使用fdisk工具只是將分區信息寫到磁盤,如果需要mkfs磁盤分區則需要重啟系統,而使用partprobe則可以使kernel重新讀取分區信息,從而避免重啟系統.
5.創建物理卷及加入組
[root@localhost ~]# pvcreate /dev/sda3
Physical volume "/dev/sda3" successfully created
[root@localhost ~]# vgextend VolGroup00 /dev/sda3
Volume group "VolGroup00" successfully extended
查看物理卷情況
[root@localhost ~]# vgdisplay
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 2
Act PV 2
VG Size 59.88 GB
PE Size 32.00 MB
Total PE 1916
Alloc PE / Size 1276 / 39.88 GB
Free PE / Size 640 / 20.00 GB
VG UUID qLjCMX-FZv2-Neha-Nze0-rAoq-p1R0-QV5pLu
[root@localhost ~]# lvresize -L +20G /dev/VolGroup00/LogVol00
Extending logical volume LogVol00 to 58.88 GB
Logical volume LogVol00 successfully resized
[root@localhost ~]# resize2fs /dev/VolGroup00/LogVol00
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/VolGroup00/LogVol00 is mounted on /; on-line resizing required
Performing an on-line resize of /dev/VolGroup00/LogVol00 to 15433728 (4k) blocks.
The filesystem on /dev/VolGroup00/LogVol00 is now 15433728 blocks long.
6.驗證
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
58G 3.2G 51G 6% /
/dev/sda1 99M 12M 82M 13% /boot
tmpfs 506M 0 506M 0% /dev/shm
好了,可以看到已經把新增加的容量添加進去了.
系統:centos 5.x
1.exsi擴容圖
擴容前:
擴容后:
2.分區前准備
yum -y install parted
ps:CentOS最小化安裝默認是沒有partprobe命令,所以我們要用yum安裝
3.查看目前硬盤狀態
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
38G 3.2G 33G 9% /
/dev/sda1 99M 12M 82M 13% /boot
tmpfs 506M 0 506M 0% /dev/shm
[root@localhost ~]# fdisk -l
Disk /dev/sda: 64.4 GB, 64424509440 bytes
255 heads, 63 sectors/track, 7832 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 5221 41833260 8e Linux LVM
4.開始對硬盤擴容
[root@localhost ~]# fdisk /dev/sda
The number of cylinders for this disk is set to 7832.
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): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 3
First cylinder (5222-7832, default 5222):
Using default value 5222
Last cylinder or +size or +sizeM or +sizeK (5222-7832, default 7832):
Using default value 7832
Command (m for help): t (修改分區類型為 Linux LVM, 8e)
Partition number (1-4): 3
Hex code (type L to list codes): 8e
Changed system type of partition 3 to 8e (Linux LVM)
Command (m for help): wq
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.
然后再執行:
[root@localhost ~]# fdisk -l
Disk /dev/sda: 64.4 GB, 64424509440 bytes
255 heads, 63 sectors/track, 7832 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 5221 41833260 8e Linux LVM
/dev/sda3 5222 7832 20972857+ 8e Linux
可以看到sda3已經出現了,表示為可用的狀態.下面繼續:
[root@localhost ~]# partprobe
[root@localhost ~]# partprobe /dev/sda3
ps:使用fdisk工具只是將分區信息寫到磁盤,如果需要mkfs磁盤分區則需要重啟系統,而使用partprobe則可以使kernel重新讀取分區信息,從而避免重啟系統.
5.創建物理卷及加入組
[root@localhost ~]# pvcreate /dev/sda3
Physical volume "/dev/sda3" successfully created
[root@localhost ~]# vgextend VolGroup00 /dev/sda3
Volume group "VolGroup00" successfully extended
查看物理卷情況
[root@localhost ~]# vgdisplay
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 2
Act PV 2
VG Size 59.88 GB
PE Size 32.00 MB
Total PE 1916
Alloc PE / Size 1276 / 39.88 GB
Free PE / Size 640 / 20.00 GB
VG UUID qLjCMX-FZv2-Neha-Nze0-rAoq-p1R0-QV5pLu
[root@localhost ~]# lvresize -L +20G /dev/VolGroup00/LogVol00
Extending logical volume LogVol00 to 58.88 GB
Logical volume LogVol00 successfully resized
[root@localhost ~]# resize2fs /dev/VolGroup00/LogVol00
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/VolGroup00/LogVol00 is mounted on /; on-line resizing required
Performing an on-line resize of /dev/VolGroup00/LogVol00 to 15433728 (4k) blocks.
The filesystem on /dev/VolGroup00/LogVol00 is now 15433728 blocks long.
6.驗證
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
58G 3.2G 51G 6% /
/dev/sda1 99M 12M 82M 13% /boot
tmpfs 506M 0 506M 0% /dev/shm
好了,可以看到已經把新增加的容量添加進去了.