vmvare下磁盘的扩容
lv是逻辑卷的简写:
1.vmvare下添加磁盘,开始扩容,过程如下:
vgextend rhel /dev/sdg --将新添加的sdg加入到vg中。
lvextend -L 25G /dev/mapper/rhel-root --扩充到目标大小
resize2fs -p -F /dev/mapper/rhel-root --扩充完之后,在df -h下看还是原来的大小,需要resize一下。
2.pv的创建
pvcreate /dev/sdb /dev/sdc
3、vg的创建
vgcreate datadg /dev/sdb /dev/sdc
4、lv的创建、删除
lvcreate -L 2000G -n lv_data datavg
5、挂载lv
mkfs -t ext4 /dev/datavg/lv_data
[root@localhost /]# mkfs -t ext4 /dev/datadg/lv_data
mke2fs 1.42.9 (28-Dec-2013)
文件系统标签=
OS type: Linux
块大小=4096 (log=2)
分块大小=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
1245184 inodes, 4980736 blocks
249036 blocks (5.00%) reserved for the super user
第一个数据块=0
Maximum filesystem blocks=2153775104
152 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000
Allocating group tables: 完成
正在写入inode表: 完成
Creating journal (32768 blocks): 完成
Writing superblocks and filesystem accounting information: 完成
mount /dev/datavg/lv_data /data
6、对于/dev/sdb直接格式化
[root@localhost /]# mkfs -t ext4 /dev/sdb mke2fs 1.42.9 (28-Dec-2013) /dev/sdb is entire device, not just one partition! 无论如何也要继续? (y,n) y 文件系统标签= OS type: Linux 块大小=4096 (log=2) 分块大小=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 1310720 inodes, 5242880 blocks 262144 blocks (5.00%) reserved for the super user 第一个数据块=0 Maximum filesystem blocks=2153775104 160 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000 Allocating group tables: 完成 正在写入inode表: 完成 Creating journal (32768 blocks): 完成 Writing superblocks and filesystem accounting information: 完成