/dev/mapper/VolGroup-lv_root 5.3G 2.5G 2.6G 50% /
tmpfs 538M 0 538M 0% /dev/shm
/dev/sda1 485M 30M 430M 7% /boot
[root@localhost ~]# fdisk -l
Disk /dev/sda: 8589 MB, 8589934592 bytes
……………
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 1045 7875584 8e Linux LVM
Disk /dev/mapper/VolGroup-lv_root: 5779 MB, 5779750912 bytes
……..
Disk /dev/mapper/VolGroup-lv_swap: 2281 MB, 2281701376 bytes
………
fdisk -lpvdisplay查看PV情况利用pvcreate /dev/sdb进行pv分区vgdisplay查看vg情况vgextend 已有VG名 /dev/sdblvextend -L +100G lv路径（例如:/dev/ccf-vg/root）检查root逻辑卷 e2fsck -f /dev/mapper/VolGroup-lv_root重新定义分区大小resize2fs /dev/mapper/VolGroup-lv_root