ICode9

精准搜索请尝试: 精确搜索
首页 > 系统相关> 文章详细

VMware中CentOS7虚拟机磁盘扩容

2021-01-22 14:34:08  阅读:437  来源: 互联网

标签:PV VG 虚拟机 cl dev CentOS7 PE 512 VMware


虚拟机磁盘扩容

1.VMware分配空间

在这里插入图片描述

2.Centos7内部分配

2.1 查看当前磁盘空间

# df -h
Filesystem           Size  Used Avail Use% Mounted on
/dev/mapper/cl-root  8.0G  3.8G  4.3G  47% /
devtmpfs             482M     0  482M   0% /dev
tmpfs                493M     0  493M   0% /dev/shm
tmpfs                493M  6.7M  486M   2% /run
tmpfs                493M     0  493M   0% /sys/fs/cgroup
/dev/sda1           1014M  184M  831M  19% /boot
tmpfs                 99M     0   99M   0% /run/user/0

2.2 对新增的硬盘空间做新增分区

#  fdisk /dev/sda
Welcome 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): n
Partition type:
   p   primary (2 primary, 0 extended, 2 free)
   e   extended
Select (default p): p
Partition number (3,4, default 3): 3
First sector (20971520-41943039, default 20971520): 
Using default value 20971520
Last sector, +sectors or +size{K,M,G} (20971520-41943039, default 41943039): 
Using default value 41943039
Partition 3 of type Linux and of size 10 GiB is set

Command (m for help): t
Partition number (1-3, default 3): 3
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'

Command (m for help): p

Disk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000bc924

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048     2099199     1048576   83  Linux
/dev/sda2         2099200    20971519     9436160   8e  Linux LVM
/dev/sda3        20971520    41943039    10485760   8e  Linux LVM

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.

WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
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)
Syncing disks.

2.3 重启系统

# reboot

2.4 查看当前分区类型,本例类型为xfs

# df -T /dev/sda1
Filesystem     Type 1K-blocks   Used Available Use% Mounted on
/dev/sda1      xfs    1038336 188240    850096  19% /boot

2.5 在新磁盘上创建xfs文件系统

# mkfs.xfs /dev/sda3
meta-data=/dev/sda3              isize=512    agcount=4, agsize=655360 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0, sparse=0
data     =                       bsize=4096   blocks=2621440, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal log           bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0

2.6 创建PV

# pvcreate /dev/sda3
WARNING: xfs signature detected on /dev/sda3 at offset 0. Wipe it? [y/n]: y
  Wiping xfs signature on /dev/sda3.
  Physical volume "/dev/sda3" successfully created.
# pvdisplay
  --- Physical volume ---
  PV Name               /dev/sda2
  VG Name               cl
  PV Size               9.00 GiB / not usable 3.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              2303
  Free PE               0
  Allocated PE          2303
  PV UUID               MlRwjY-TmVF-H8PV-heSz-ALGL-Q7sp-jFU6Al

  "/dev/sda3" is a new physical volume of "10.00 GiB"
  --- NEW Physical volume ---
  PV Name               /dev/sda3
  VG Name               
  PV Size               10.00 GiB
  Allocatable           NO
  PE Size               0   
  Total PE              0
  Free PE               0
  Allocated PE          0
  PV UUID               0hmgH0-0wVg-jWUW-65WX-1TYb-sUGH-6jF1qm

2.7 PV加入VG,vgextend后接VG Name,本例中为cl

# vgdisplay
  --- Volume group ---
  VG Name               cl
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  3
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               2
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               9.00 GiB
  PE Size               4.00 MiB
  Total PE              2303
  Alloc PE / Size       2303 / 9.00 GiB
  Free  PE / Size       0 / 0   
  VG UUID               dYdb4l-wMUh-e2xv-WiaJ-Oa52-NvdF-s5ICJC
# vgextend cl /dev/sda3

2.8 VG加入LV

# lvextend -l +2559 /dev/cl/root
  Size of logical volume cl/root changed from 8.00 GiB (2047 extents) to 17.99 GiB (4606 extents).
  Logical volume cl/root successfully resized.

2.9 调整文件系统大小

# xfs_growfs /dev/cl/root
meta-data=/dev/mapper/cl-root    isize=512    agcount=4, agsize=524032 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0 spinodes=0
data     =                       bsize=4096   blocks=2096128, 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 2096128 to 4716544

本例中是xfs文件系统使用xfs_growfs命令调整,若其他文件系统,如ext4使用resize2fs命令,注意区分

3.结果

# df -h
Filesystem           Size  Used Avail Use% Mounted on
/dev/mapper/cl-root   18G  3.8G   15G  21% /
devtmpfs             482M     0  482M   0% /dev
tmpfs                493M     0  493M   0% /dev/shm
tmpfs                493M  6.7M  486M   2% /run
tmpfs                493M     0  493M   0% /sys/fs/cgroup
/dev/sda1           1014M  184M  831M  19% /boot
tmpfs                 99M     0   99M   0% /run/user/0

标签:PV,VG,虚拟机,cl,dev,CentOS7,PE,512,VMware
来源: https://blog.csdn.net/weixin_44726976/article/details/112983254

本站声明: 1. iCode9 技术分享网(下文简称本站)提供的所有内容,仅供技术学习、探讨和分享;
2. 关于本站的所有留言、评论、转载及引用,纯属内容发起人的个人观点,与本站观点和立场无关;
3. 关于本站的所有言论和文字,纯属内容发起人的个人观点,与本站观点和立场无关;
4. 本站文章均是网友提供,不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属;如您发现该文章侵犯了您的权益,可联系我们第一时间进行删除;
5. 本站为非盈利性的个人网站,所有内容不会用来进行牟利,也不会利用任何形式的广告来间接获益,纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。

专注分享技术,共同学习,共同进步。侵权联系[81616952@qq.com]

Copyright (C)ICode9.com, All Rights Reserved.

ICode9版权所有