给VMware虚拟机中的CentOS分区扩容的操作笔记_RedHat/Centos教程-查字典教程网
给VMware虚拟机中的CentOS分区扩容的操作笔记
给VMware虚拟机中的CentOS分区扩容的操作笔记
发布时间:2017-01-10 来源:查字典编辑
摘要:由于开发测试机器dev-vhost017根分区规划不足只有10G,需要扩容。(基于LVM)先关闭dev-vhost017,然后在vSpher...

由于开发测试机器dev-vhost017根分区规划不足只有10G,需要扩容。(基于LVM)

先关闭dev-vhost017,然后在vSphere Client 将根分区硬盘10G 调整到50G

开启虚拟机

原始/ 大小 10G

[root@dev-vhost017 ~]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/mapper/vg_centos6-lv_root

8.3G 4.0G 3.9G 51% /

tmpfs 939M 12K 939M 1% /dev/shm

/dev/sda1 477M 57M 396M 13% /boot

查看磁盘sda已扩展到50G

[root@dev-vhost017 ~]# fdisk /dev/sda

WARNING: DOS-compatible mode is deprecated. It's strongly recommended to

switch off the mode (command 'c') and change display units to

sectors (command 'u').

Command (m for help): p

Disk /dev/sda: 53.7 GB, 53687091200 bytes

255 heads, 63 sectors/track, 6527 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x0007ef5b

Device Boot Start End Blocks Id System

/dev/sda1 * 1 64 512000 83 Linux

Partition 1 does not end on cylinder boundary.

/dev/sda2 64 1306 9972736 8e Linux LVM

Disk /dev/mapper/vg_centos6-lv_root: 9135 MB, 9135194112 bytes

255 heads, 63 sectors/track, 1110 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/mapper/vg_centos6-lv_swap: 1073 MB, 1073741824 bytes

255 heads, 63 sectors/track, 130 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

查看lvm状态

[root@dev-vhost017 ~]# pvs

PV VG Fmt Attr PSize PFree

/dev/sda2 vg_centos6 lvm2 a-- 9.51g 0

[root@dev-vhost017 ~]# vgs

VG #PV #LV #SN Attr VSize VFree

vg_centos6 1 2 0 wz--n- 9.51g 0

[root@dev-vhost017 ~]# lvs

LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert

lv_root vg_centos6 -wi-ao---- 8.51g

lv_swap vg_centos6 -wi-ao---- 1.00g

分区/dev/sda3

[root@dev-vhost017 ~]# fdisk /dev/sda

WARNING: DOS-compatible mode is deprecated. It's strongly recommended to

switch off the mode (command 'c') and change display units to

sectors (command 'u').

Command (m for help): p

Disk /dev/sda: 53.7 GB, 53687091200 bytes

255 heads, 63 sectors/track, 6527 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x0007ef5b

Device Boot Start End Blocks Id System

/dev/sda1 * 1 64 512000 83 Linux

Partition 1 does not end on cylinder boundary.

/dev/sda2 64 1306 9972736 8e Linux LVM

/dev/sda3 1306 6527 41942367+ 83 Linux

[root@dev-vhost017 ~]# partprobe

重启虚拟机 格式化/dev/sda3

[root@dev-vhost017 ~]# mkfs.ext4 /dev/sda3

lvm 扩容

[root@dev-vhost017 ~]# pvcreate /dev/sda3

Physical volume "/dev/sda3" successfully created

[root@dev-vhost017 ~]# pvs

PV VG Fmt Attr PSize PFree

/dev/sda2 vg_centos6 lvm2 a-- 9.51g 0

/dev/sda3 lvm2 --- 40.00g 40.00g

[root@dev-vhost017 ~]# vgextend /dev/mapper/vg_centos6 /dev/sda3 (注意组名)

Volume group "vg_centos6" successfully extended

[root@dev-vhost017 ~]# lvextend -L 39.9G /dev/vg_centos6/lv_root /dev/sda3

Rounding size to boundary between physical extents: 39.90 GiB

Size of logical volume vg_centos6/lv_root changed from 8.51 GiB (2178 extents) to 39.90 GiB (10215 extents).

Logical volume lv_root successfully resized

[root@dev-vhost017 ~]# resize2fs /dev/vg_centos6/lv_root

resize2fs 1.41.12 (17-May-2010)

Filesystem at /dev/vg_centos6/lv_root is mounted on /; on-line resizing required

old desc_blocks = 1, new_desc_blocks = 3

Performing an on-line resize of /dev/vg_centos6/lv_root to 10460160 (4k) blocks.

The filesystem on /dev/vg_centos6/lv_root is now 10460160 blocks long.

[root@dev-vhost017 ~]# pvs

PV VG Fmt Attr PSize PFree

/dev/sda2 vg_centos6 lvm2 a-- 9.51g 0

/dev/sda3 vg_centos6 lvm2 a-- 40.00g 8.60g

[root@dev-vhost017 ~]# vgs

VG #PV #LV #SN Attr VSize VFree

vg_centos6 2 2 0 wz--n- 49.50g 8.60g

[root@dev-vhost017 ~]# lvs

LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert

lv_root vg_centos6 -wi-ao---- 39.90g

lv_swap vg_centos6 -wi-ao---- 1.00g

[root@dev-vhost017 ~]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/mapper/vg_centos6-lv_root

40G 4.0G 34G 11% /

tmpfs 939M 12K 939M 1% /dev/shm

/dev/sda1 477M 57M 396M 13% /boot

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