原有 /data 目录中 mount如下 lv
# df -h /data
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rootvg-lv01 4.0G 71M 3.7G 2% /data
# lvscan
ACTIVE '/dev/rootvg/lv01' [4.0 GB] inherit
要把 lv01增加500M, 如下步骤:
1. 用umount卸载挂接点
#umount /data
2. 用lvextend命令进行扩容
# lvextend -L +500M /dev/rootvg/lv01
3. # lvscan
ACTIVE '/dev/rootvg/lv01' [4.49 GB] inherit
4. 用 e2fsck进行检查
# e2fsck -f /dev/rootvg/lv01
e2fsck 1.39 (29-May-2006)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/rootvg/lv01: 12/524288 files (8.3% non-contiguous), 34401/1048576 blocks
5. 用resize2fs使容量生效**
# resize2fs /dev/rootvg/lv01
resize2fs 1.39 (29-May-2006)
Resizing the filesystem on /dev/rootvg/lv01 to 1176576 (4k) blocks.
The filesystem on /dev/rootvg/lv01 is now 1176576 blocks long.
6. # mount /dev/rootvg/lv01 /data
# df -h /data
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rootvg-lv01 4.5G 71M 4.2G 2% /data
注意: **5中使用容量生效命令,如果是在RHEL 4.X 中命令为ext2online;如果是在RHEL 3.X之前,可合并2-5步命令为e2fsadm。
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