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在安裝系統(tǒng)時(shí)LVM的大小沒(méi)有設(shè)定好，還好可以在線收縮和擴(kuò)展。 1，看下各邏輯卷大小 [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l(wèi)ost+found可見home分區(qū)單獨(dú)掛載在一個(gè)分區(qū)下 [root@bogon ~]# ls /home/ innofidei  lost+found 3，卸載并驗(yàn)證 [root@bogon ~]# umount /dev/mapper/VolGroup00-LogVol01 [root@bogon ~]# ls /home/ 4，resize2fs  卷組先 [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.

注意這里會(huì)提醒你e2fsck的 所以resize2fs之前要這樣做： e2fsck -f /dev/mapper/VolGroup-logVol01

5，減小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,重新掛載并驗(yàn)證 [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，擴(kuò)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,再驗(yàn)證 [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