主要脚本整理

lsblk fdisk /dev/sda n p 主分区 e 扩展分区 +99G w partprobe lsblk lvm pvcreate /dev/sda3 pvdisplay vgextend centos /dev/sda3 vgdisplay lvextend -l +100%FREE /dev/centos/root xfs_growfs /dev/centos/root df -h 

VMware扩容20G实操演示

讯享网[root@localhost ~]# lsblk  NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 40G 0 disk ├─sda1 8:1 0 1G 0 part /boot └─sda2 8:2 0 19G 0 part ├─centos-root 253:0 0 17G 0 lvm / └─centos-swap 253:1 0 2G 0 lvm [SWAP] sr0 11:0 1 133M 0 rom /run/media/zxl/GParted-live [root@localhost ~]# fdisk /dev/sda  欢迎使用 fdisk (util-linux 2.23.2)。 更改将停留在内存中，直到您决定将更改写入磁盘。 使用写入命令前请三思。 命令(输入 m 获取帮助)：n Partition type: p primary (2 primary, 0 extended, 2 free) e extended Select (default p): Using default response p 分区号 (3,4，默认 3)： 起始 扇区 (-，默认为 )： 将使用默认值  Last 扇区, +扇区 or +size{ 
   K,M,G} (-，默认为 )： 将使用默认值  分区 3 已设置为 Linux 类型，大小设为 20 GiB 命令(输入 m 获取帮助)：w The partition table has been altered! Calling ioctl() to re-read partition table. WARNING: Re-reading the partition table failed with error 16: 设备或资源忙. The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8) 正在同步磁盘。 [root@localhost ~]# partprobe  Warning: 无法以读写方式打开 /dev/sr0 (只读文件系统)。/dev/sr0 已按照只读方式打开。 Error: 无效的分区表 - /dev/sr0 出现递归分区。 [root@localhost ~]# lsblk  NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 40G 0 disk ├─sda1 8:1 0 1G 0 part /boot ├─sda2 8:2 0 19G 0 part │ ├─centos-root 253:0 0 17G 0 lvm / │ └─centos-swap 253:1 0 2G 0 lvm [SWAP] └─sda3 8:3 0 20G 0 part sr0 11:0 1 133M 0 rom /run/media/zxl/GParted-live [root@localhost ~]# lvm lvm> pvcreate /dev/sda3 WARNING: dos signature detected on /dev/sda3 at offset 510. Wipe it? [y/n]: y Wiping dos signature on /dev/sda3. Physical volume "/dev/sda3" successfully created. lvm> pvdisplay --- Physical volume --- PV Name /dev/sda2 VG Name centos PV Size <19.00 GiB / not usable 3.00 MiB Allocatable yes (but full) PE Size 4.00 MiB Total PE 4863 Free PE 0 Allocated PE 4863 PV UUID Hhi1KI-pLeY-Jh5H-ztsH-0Fjn-o3iN-xw9Dfy "/dev/sda3" is a new physical volume of "20.00 GiB" --- NEW Physical volume --- PV Name /dev/sda3 VG Name PV Size 20.00 GiB Allocatable NO PE Size 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID Fw8jKJ-P35z-R67s-oPCN-16pj-3IR1-YTpLQ7 lvm> vgextend centos /dev/sda3 #此处的centos取值自VG Name字段，并不是固定的 Volume group "centos" successfully extended lvm> pvdisplay --- Physical volume --- PV Name /dev/sda2 VG Name centos PV Size <19.00 GiB / not usable 3.00 MiB Allocatable yes (but full) PE Size 4.00 MiB Total PE 4863 Free PE 0 Allocated PE 4863 PV UUID Hhi1KI-pLeY-Jh5H-ztsH-0Fjn-o3iN-xw9Dfy --- Physical volume --- PV Name /dev/sda3 VG Name centos PV Size 20.00 GiB / not usable 4.00 MiB Allocatable yes PE Size 4.00 MiB Total PE 5119 Free PE 5119 Allocated PE 0 PV UUID Fw8jKJ-P35z-R67s-oPCN-16pj-3IR1-YTpLQ7 lvm> vgdisplay --- Volume group --- VG Name centos System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 4 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 2 Act PV 2 VG Size 38.99 GiB PE Size 4.00 MiB Total PE 9982 Alloc PE / Size 4863 / <19.00 GiB Free PE / Size 5119 / <20.00 GiB VG UUID nhvJGV-brrI-Kq8K-GpCu-dQbs-OOsz-3j8FOT lvm> lvextend -l +100%FREE /dev/centos/root Size of logical volume centos/root changed from <17.00 GiB (4351 extents) to 36.99 GiB (9470 extents). Logical volume centos/root successfully resized. lvm> ^C [root@localhost ~]# xfs_growfs /dev/centos/root  meta-data=/dev/mapper/centos-root isize=512 agcount=4, agsize= blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=0 spinodes=0 data = bsize=4096 blocks=, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=1 log =internal bsize=4096 blocks=2560, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 data blocks changed from  to  [root@localhost ~]# df -h 文件系统 容量 已用 可用 已用% 挂载点 devtmpfs 974M 0 974M 0% /dev tmpfs 991M 12K 991M 1% /dev/shm tmpfs 991M 11M 980M 2% /run tmpfs 991M 0 991M 0% /sys/fs/cgroup /dev/mapper/centos-root 37G 11G 27G 28% / /dev/sda1 1014M 172M 843M 17% /boot tmpfs 199M 20K 199M 1% /run/user/1000 /dev/sr0 133M 133M 0 100% /run/media/zxl/GParted-live [root@localhost ~]#