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在安装系统时LVM的大小没有设定好，还好可以在线收缩和扩展。 1，看下各逻辑卷大小 [root@bogon ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00 39G 461M 37G 2% / /dev/mapper/VolGroup00-LogVol03 64G 222M 61G 1% /var /dev/mapper/VolGroup00-LogVol02 49G 2.0G 45G 5% /usr /dev/mapper/VolGroup00-LogVol01 39G 177M 37G 1% /home /dev/sda1 99M 13M 82M 14% /boot tmpfs 1005M 0 1005M 0% /dev/shm /dev/hdc 3.5G 3.5G 0 100% /media 2，看到home下有lost+found可见home分区单独挂载在一个分区下 [root@bogon ~]# ls /home/ innofidei lost+found 3，卸载并验证 [root@bogon ~]# umount /dev/mapper/VolGroup00-LogVol01 [root@bogon ~]# ls /home/ 4，resize2fs 卷组先 [root@bogon ~]# resize2fs /dev/mapper/VolGroup00-LogVol01 20G resize2fs 1.39 (29-May-2006) Resizing the filesystem on /dev/mapper/VolGroup00-LogVol01 to 5242880 (4k) blocks. The filesystem on /dev/mapper/VolGroup00-LogVol01 is now 5242880 blocks long. 注意这里会提醒你e2fsck的 所以resize2fs之前要这样做： e2fsck -f /dev/mapper/VolGroup-logVol01 5，减小lvm [root@bogon ~]# lvreduce -L 20G /dev/mapper/VolGroup00-LogVol01 /dev/hdc: open failed: Read-only file system WARNING: Reducing active logical volume to 20.00 GB THIS MAY DESTROY YOUR DATA (filesystem etc.) Do you really want to reduce LogVol01? [y/n]: y Reducing logical volume LogVol01 to 20.00 GB Logical volume LogVol01 successfully resized 6,重新挂载并验证 [root@bogon ~]# mount -a [root@bogon ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00 39G 461M 37G 2% / /dev/mapper/VolGroup00-LogVol03 64G 222M 61G 1% /var /dev/mapper/VolGroup00-LogVol02 49G 2.0G 45G 5% /usr /dev/sda1 99M 13M 82M 14% /boot tmpfs 1005M 0 1005M 0% /dev/shm /dev/hdc 3.5G 3.5G 0 100% /media /dev/mapper/VolGroup00-LogVol01 20G 173M 19G 1% /home [root@bogon ~]# ls /home/ innofidei lost+found 7，扩展另一lvm [root@bogon ~]# lvextend -L +20G /dev/mapper/VolGroup00-LogVol02 /dev/hdc: open failed: Read-only file system Extending logical volume LogVol02 to 70.00 GB Logical volume LogVol02 successfully resized [root@bogon ~]# resize2fs /dev/mapper/VolGroup00-LogVol02 resize2fs 1.39 (29-May-2006) Filesystem at /dev/mapper/VolGroup00-LogVol02 is mounted on /usr; on-line resizing required Performing an on-line resize of /dev/mapper/VolGroup00-LogVol02 to 18350080 (4k) blocks. The filesystem on /dev/mapper/VolGroup00-LogVol02 is now 18350080 blocks long. 8,再验证 [root@bogon ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00 39G 461M 37G 2% / /dev/mapper/VolGroup00-LogVol03 64G 222M 61G 1% /var /dev/mapper/VolGroup00-LogVol02 68G 2.0G 63G 4% /usr /dev/sda1 99M 13M 82M 14% /boot tmpfs 1005M 0 1005M 0% /dev/shm /dev/hdc 3.5G 3.5G 0 100% /media /dev/mapper/VolGroup00-LogVol01 20G 173M 19G 1% /home |
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