LVM是Linux下面不错的卷管理器。 可以在线扩展文件系统大小。本文主要讲解了一下扩展空间的操作。
检查目前使用情况
[root@host ~]# df -h | grep data01
/dev/mapper/datavg-ora-data01
                      90G  85G  5G  94% /ora/data01
检查剩余空间:
[root@host ~]# vgs
  VG         #PV #LV #SN Attr   VSize  VFree
  datavg       1   2   0 wz--n- 201.88G 80g
扩展volume
[root@host ~]# lvextend -L +30G /dev/mapper/datavg-ora-data01
  Extending logical volume datavol-ora-data01 to 120.00 GB
  Logical volume datavg-ora-data01 successfully resized
在线调整volume大小
[root@host ~]# resize2fs /dev/mapper/datavg-ora-data01
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/mapper/datavg-ora-data01 is mounted on /ora/data01;
on-line resizing required
Performing an on-line resize of /dev/mapper/datavg-ora-data01 to 2883584 (4k) blocks.
The filesystem on /dev/mapper/datavg-ora-data01 is now 2883584 blocks long.
调整完成
[root@host ~]# df -h | grep data01
/dev/mapper/datavg-ora-data01
                      120G  85G  35G  71% /ora/data01