linux 逻辑卷管理 调整分区大小例子
发布:smiling 来源: PHP粉丝网 添加日期:2015-04-22 11:06:42 浏览: 评论:0
文章就是一个关于linux 逻辑卷管理 调整分区大小例子,我们只要按下面代码操作就完成100%完成逻辑卷管理 调整分区大小了.
测试机各种报错,创建个目录都报错,df看了一下,发现VolGroup-lv_root 100%,虚拟磁盘满了,怎么办呢.
1,解决过程
- # df -h //查看分区
- # umount /home //取消挂载
- # e2fsck -f /dev/mapper/VolGroup-lv_home //分区检测
- # resize2fs -p /dev/mapper/VolGroup-lv_home 100G //将lv_home虚拟分区设为100G
- # mount /home //挂载home
- # df -h //查看分区
- # lvreduce -L 100G /dev/mapper/VolGroup-lv_home //释放空间
- # vgdisplay //查看可用空间大小
- # lvextend -L +311.47G /dev/mapper/VolGroup-lv_root //扩展lv_root虚拟分区
- # resize2fs -p /dev/mapper/VolGroup-lv_root //lv_root重设分区大小
- LVM(逻辑磁盘管理),灵活性很高.
2,详细解决过程
- [root@localhost ~]# df -h
- Filesystem Size Used Avail Use% Mounted on
- /dev/mapper/VolGroup-lv_root 50G 47G 16M 100% / //lv_root满了
- tmpfs 1.9G 72K 1.9G 1% /dev/shm
- /dev/sda1 485M 40M 420M 9% /boot
- /dev/mapper/VolGroup-lv_home 406G 19G 366G 5% /home //lv_home空间很多
- [root@localhost ~]# resize2fs -p /dev/mapper/VolGroup-lv_home 100G
- resize2fs 1.41.12 (17-May-2010)
- Filesystem at /dev/mapper/VolGroup-lv_home is mounted on /home; on-line resizing required
- On-line shrinking from 107865088 to 65536000 not supported. //先umount才能resize2fs
- [root@localhost ~]# umount /home //umount home目录
- [root@localhost ~]# resize2fs -p /dev/mapper/VolGroup-lv_home 100G
- resize2fs 1.41.12 (17-May-2010)
- 请先运行 'e2fsck -f /dev/mapper/VolGroup-lv_home'. //提示要先进行磁盘检测
- [root@localhost ~]# 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: 1459/16384000 files (4.0% non-contiguous), 5914204/65536000 blocks
- [root@localhost ~]# resize2fs -p /dev/mapper/VolGroup-lv_home 100G//重定大小
- resize2fs 1.41.12 (17-May-2010)
- Resizing the filesystem on /dev/mapper/VolGroup-lv_home to 26214400 (4k) blocks.
- Begin pass 2 (max = 32768)
正在重定位块 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Begin pass 3 (max = 2000)
正在扫描inode表 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
- The filesystem on /dev/mapper/VolGroup-lv_home is now 26214400 blocks long.
- [root@localhost ~]# mount /home/
- [root@localhost ~]# df -h
- Filesystem Size Used Avail Use% Mounted on
- /dev/mapper/VolGroup-lv_root 50G 47G 16M 100% /
- tmpfs 1.9G 72K 1.9G 1% /dev/shm
- /dev/sda1 485M 40M 420M 9% /boot
- /dev/mapper/VolGroup-lv_home 99G 19G 75G 20% /home
- [root@localhost ~]# lvreduce -L 100G /dev/mapper/VolGroup-lv_home //释放空间
- WARNING: Reducing active and open logical volume to 100.00 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 100.00 GiB
- Logical volume lv_home successfully resized
- [root@localhost ~]# df -h
- Filesystem Size Used Avail Use% Mounted on
- /dev/mapper/VolGroup-lv_root 50G 47G 16M 100% /
- tmpfs 1.9G 72K 1.9G 1% /dev/shm
- /dev/sda1 485M 40M 420M 9% /boot
- /dev/mapper/VolGroup-lv_home 99G 19G 75G 20% /home
- [root@localhost ~]# 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 465.27 GiB
- PE Size 4.00 MiB
- Total PE 119109
- Alloc PE / Size 39372 / 153.80 GiB
- Free PE / Size 79737 / 311.47 GiB //空闲空间
- VG UUID Vt2V4t-Byxs-tQqk-cY0h-IDE3-pabX-LUfkRS
- [root@localhost ~]# lvextend -L +311.47G /dev/mapper/VolGroup-lv_root //空闲空间加入到lv_root
- Rounding size to boundary between physical extents: 311.47 GiB
- Extending logical volume lv_root to 361.47 GiB
- Logical volume lv_root successfully resized
- [root@localhost ~]# resize2fs -p /dev/mapper/VolGroup-lv_root
- resize2fs 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 = 23 //这儿要耐心等待,扩大越多,时间越长
- Performing an on-line resize of /dev/mapper/VolGroup-lv_root to 94757888 (4k) blocks.
- The filesystem on /dev/mapper/VolGroup-lv_root is now 94757888 blocks long.
- [root@localhost openfire]# df -h
- Filesystem Size Used Avail Use% Mounted on
- /dev/mapper/VolGroup-lv_root 356G 48G 308G 14% /
- tmpfs 1.9G 72K 1.9G 1% /dev/shm
- /dev/sda1 485M 40M 420M 9% /boot
- /dev/mapper/VolGroup-lv_home 99G 19G 75G 20% /home
Tags: linux逻辑卷 linux分区大小
推荐文章
热门文章
最新评论文章
- 写给考虑创业的年轻程序员(10)
- PHP新手上路(一)(7)
- 惹恼程序员的十件事(5)
- PHP邮件发送例子,已测试成功(5)
- 致初学者:PHP比ASP优秀的七个理由(4)
- PHP会被淘汰吗?(4)
- PHP新手上路(四)(4)
- 如何去学习PHP?(2)
- 简单入门级php分页代码(2)
- php中邮箱email 电话等格式的验证(2)