標籤:
調整硬碟分區大小
想增加root空間,減少home空間。
1.查看硬碟使用方式。
[root@npm ~]# df -hFilesystem Size Used Avail Use% Mounted on/dev/mapper/VolGroup-lv_root 48G 45G 17M 100% /tmpfs 246M 0 246M 0% /dev/shm/dev/sda1 485M 33M 427M 8% /boot/dev/mapper/VolGroup-lv_home 50G 180M 47G 1% /home
2.調整home分區大小
[[email protected] ~]# umount /home[[email protected] ~]# e2fsck -f /dev/mapper/VolGroup-lv_homee2fsck 1.41.12 (17-May-2010)第一步: 檢查inode,塊,和大小第二步: 檢查目錄結構第3步: 檢查目錄串連性Pass 4: Checking reference counts第5步: 檢查簇概要資訊/dev/mapper/VolGroup-lv_home: 11/3303104 files (0.0% non-contiguous), 253351/13207552 blocks[[email protected] ~]# resize2fs -p /dev/mapper/VolGroup-lv_home 2Gresize2fs 1.41.12 (17-May-2010)Resizing the filesystem on /dev/mapper/VolGroup-lv_home to 524288 (4k) blocks.Begin pass 2 (max = 32768)正在重定位塊 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXBegin pass 3 (max = 404)正在掃描inode表 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXThe filesystem on /dev/mapper/VolGroup-lv_home is now 524288 blocks long.[[email protected] ~]# mount /home[[email protected] ~]# df -hFilesystem Size Used Avail Use% Mounted on/dev/mapper/VolGroup-lv_root 48G 45G 17M 100% /tmpfs 246M 0 246M 0% /dev/shm/dev/sda1 485M 33M 427M 8% /boot/dev/mapper/VolGroup-lv_home 2.0G 152M 1.8G 8% /home
3.釋放空間
[[email protected] ~]# lvreduce -L 2G /dev/mapper/VolGroup-lv_home WARNING: Reducing active and open logical volume to 2.00 GiB THIS MAY DESTROY YOUR DATA (filesystem etc.)Do you really want to reduce lv_home? [y/n]: y Reducing logical volume lv_home to 2.00 GiB Logical volume lv_home successfully resized[[email protected] ~]# df -hFilesystem Size Used Avail Use% Mounted on/dev/mapper/VolGroup-lv_root 48G 45G 16M 100% /tmpfs 246M 0 246M 0% /dev/shm/dev/sda1 485M 33M 427M 8% /boot/dev/mapper/VolGroup-lv_home 2.0G 152M 1.8G 8% /home[[email protected] ~]# vgdisplay --- Volume group --- VG Name VolGroup System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 5 VG Access read/write VG Status resizable MAX LV 0 Cur LV 3 Open LV 3 Max PV 0 Cur PV 1 Act PV 1 VG Size 99.51 GiB PE Size 4.00 MiB Total PE 25474 Alloc PE / Size 13088 / 51.12 GiB Free PE / Size 12386 / 48.38 GiB VG UUID ILLwIo-pQ0o-2Ayw-fYcP-QhcW-A1id-Sozp1f
4.增加空餘空間到root
[[email protected] ~]# lvextend -L +48.38G /dev/mapper/VolGroup-lv_root Rounding size to boundary between physical extents: 48.38 GiB Extending logical volume lv_root to 96.54 GiB Logical volume lv_root successfully resized[[email protected] ~]# resize2fs -p /dev/mapper/VolGroup-lv_rootresize2fs 1.41.12 (17-May-2010)Filesystem at /dev/mapper/VolGroup-lv_root is mounted on /; on-line resizing requiredold desc_blocks = 4, new_desc_blocks = 7Performing an on-line resize of /dev/mapper/VolGroup-lv_root to 25307136 (4k) blocks.The filesystem on /dev/mapper/VolGroup-lv_root is now 25307136 blocks long.[[email protected] ~]# df -hFilesystem Size Used Avail Use% Mounted on/dev/mapper/VolGroup-lv_root 96G 45G 46G 50% /tmpfs 246M 0 246M 0% /dev/shm/dev/sda1 485M 33M 427M 8% /boot/dev/mapper/VolGroup-lv_home 2.0G 152M 1.8G 8% /home
轉載至:http://my.oschina.net/shanhe/blog/296735
CentOS 6.5 64位,調整分區大小