CentOS6 调整硬盘分区大小?

时间：2016-03-23 10:02 来源：互联网作者：网络阅读：℃

内容摘要:

调整硬盘分区大小想增加root空间，减少home空间。 1.查看硬盘使用情况。 [root@npm~]#df-hFilesystemSizeUsedAvailUse%Mountedon/dev/mapper/VolGroup-lv_root48G45G17M100%/tmpfs246M0246M0%/dev/shm/dev/sda1485M33M427M8%/boot/dev/mapper/VolGroup-lv_h

调整硬盘分区大小

想增加root空间，减少home空间。本文来自Q淘网 www.qqaiqin.com

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1.查看硬盘使用情况。

[root@npm ~]# df -h Filesystem 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

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2.调整home分区大小

[root@npm ~]# umount /home[root@npm ~]# e2fsck -f /dev/mapper/VolGroup-lv_home
e2fsck 1.41.12 (17-May-2010)第一步: 检查inode,块,和大小
第二步: 检查目录结构
第3步: 检查目录连接性
Pass 4: Checking reference counts
第5步: 检查簇概要信息
/dev/mapper/VolGroup-lv_home: 11/3303104 files (0.0% non-contiguous), 253351/13207552 blocks[root@npm ~]# resize2fs -p /dev/mapper/VolGroup-lv_home 2G
resize2fs 1.41.12 (17-May-2010)Resizing the filesystem on /dev/mapper/VolGroup-lv_home to 524288 (4k) blocks.
Begin pass 2 (max = 32768)正在重定位块            XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Begin pass 3 (max = 404)正在扫描inode表          XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
The filesystem on /dev/mapper/VolGroup-lv_home is now 524288 blocks long.[root@npm ~]# mount /home[root@npm ~]# df -h
Filesystem                    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 本文来自Q淘网 www.qqaiqin.com

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3.释放空间

[root@npm ~]# 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 [root@npm ~]# df -h Filesystem 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 [root@npm ~]# 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

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4.增加空余空间到root

[root@npm ~]#  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
[root@npm ~]# 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 required
old 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.

[root@npm ~]# 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 Q淘网游戏攻略站

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