[[email protected] ~]# df -h
Filesystem                    Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root  158G   13G  137G   9% /
tmpfs                         253G  115G  138G  46% /dev/shm
/dev/sda1                     485M   40M  420M   9% /boot
/dev/mapper/LVM-lv_oradata    252G  240G   17M 100%

[[email protected] ~]# mount
/dev/mapper/VolGroup-lv_root on / type ext4 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw,rootcontext="system_u:object_r:tmpfs_t:s0")
/dev/sda1 on /boot type ext4 (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
/tmp on /tmp type none (rw,bind)
/var/tmp on /var/tmp type none (rw,bind)
/home on /home type none (rw,bind)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
gvfs-fuse-daemon on /root/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev)
/dev/mapper/LVM-lv_oradata

[[email protected] ~]#vgs
  VG       #PV #LV #SN Attr   VSize    VFree  
  LVM        4   1   0 wz--n- 1023.98g 767.98g
  VolGroup   1   2   0 wz--n-  557.37g 365.37g
[[email protected] ~]#

這裡看到還剩767.98g可以擴充套件

[[email protected] ~]# lvextend  -L  +700G  /dev/LVM/lv_oradata

[[email protected] ~]# resize2fs  /dev/LVM/lv_oradata
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/LVM/lv_oradata is mounted on /oradata; on-line resizing required
old desc_blocks = 16, new_desc_blocks = 60
Performing an on-line resize of /dev/LVM/lv_oradata to 250609664 (4k) blocks.
The filesystem on /dev/LVM/lv_oradata is now 250609664 blocks long.

[[email protected] ~]# df -h
Filesystem                    Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root  158G   13G  137G   9% /
tmpfs                         253G  115G  138G  46% /dev/shm
/dev/sda1                     485M   40M  420M   9% /boot
/dev/mapper/LVM-lv_oradata    941G  250G  644G  28% /oradata
[[email protected] ~]#