VM虚拟机中Linux扩展根分区空间.docx

VM虚拟机中Linux扩展根分区空间修改记录编号日期描述 版本作者审核发布日期12016/7/18初稿1.0夏裕太1目 录1检查LVM12VMWare扩展设置13开启虚拟机24查看分区状况35查看lvm状态36生成分区/dev/sda347重读磁盘分区58格式化/dev/sda359lvm 扩容5检查LVM看到文章说必须基于LVM，那是不是呢？命令检验一下。据说centos默认安装也是LVM的[root@SQL2 ~]# lvdisplayVMWare扩展设置关闭centos，打开VMWare软件，展开需要扩展的linux服务器按如图所示步骤，点出扩展 磁盘容量对话框此处，改成80,启动虚拟机开启虚拟机#查看当前硬盘使用情况，如下所示，50G而已[root@SQL2 ~]# df -hFilesystemSize Used Avail Use% Mounted on/dev/mapper/centos-root 46G 12G35G 25% /devtmpfs 1.9G 0 1.9G 0% /devtmpfs 1.9G 84K 1.9G 1% /dev/shmtmpfs 1.9G 8.9M 1.9G 1% /runtmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup/dev/sda1497M 159M 339M 32% /boottmpfs 379M 12K 379M 1% /run/user/42tmpfs 379M 0 379M 0% /run/user/0查看分区状况#sda已经扩展到80G了[root@SQL2 ~]# fdisk /dev/sdaWelcome to fdisk (util-linux 2.23.2).Changes will remain in memory only, until you decide to write them.Be careful before using the write command.Command (m for help): pDisk /dev/sda: 85.9 GB, 85899345920 bytes, 167772160 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk label type: dosDisk identifier: 0x0006069d Device Boot Start End BlocksId System/dev/sda1 * 2048 1026047 Linux/dev/sda2 1026048 104857599 519157768e Linux LVMCommand (m for help): 查看lvm状态[root@SQL2 ~]# pvs PV VGFmt Attr PSize PFree /dev/sda2 centos lvm2 a-- 49.51g 44.00m[root@SQL2 ~]# vgs VG #PV #LV #SN AttrVSize VFree centos 1 2 0 wz--n- 49.51g 44.00m[root@SQL2 ~]# lvs LV VG AttrLSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert root centos -wi-ao---- 45.59g swap centos -wi-ao---- 3.88g生成分区/dev/sda3?[root@SQL2 ~]# fdisk /dev/sdaWelcome to fdisk (util-linux 2.23.2).Changes will remain in memory only, until you decide to write them.Be careful before using the write command.Command (m for help): pDisk /dev/sda: 85.9 GB, 85899345920 bytes, 167772160 sectorsUnits = sectors of 1 *