• vmware的centos扩容


    完全参考vmware centos扩容

    前提:vmware上安装的centos开始只给了30G容量,现在要扩容到40G

    1. 在vmware上扩展分配的磁盘空间

    2. 启动虚拟机,使用root用户执行以下操作

    3. 执行 df -h

    [root@localhost docker]# df -h
    Filesystem               Size  Used Avail Use% Mounted on
    devtmpfs                 898M     0  898M   0% /dev
    tmpfs                    910M     0  910M   0% /dev/shm
    tmpfs                    910M  9.5M  901M   2% /run
    tmpfs                    910M     0  910M   0% /sys/fs/cgroup
    /dev/mapper/centos-root   27G   17G  9.6G  65% /          # 需要扩容的根分区(/)
    /dev/sda1               1014M  150M  865M  15% /boot
    tmpfs                    182M     0  182M   0% /run/user/1000
    

    可以看到根分区27G,使用了17G,可使用9.6G,需要扩容的就是这个分区

    1. 执行 fdisk -l
    [root@localhost docker]# fdisk -l
    # 磁盘(/dev/sda)总空间 /dev/sda 42.9G
    Disk /dev/sda: 42.9 GB, 42949672960 bytes, 83886080 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: 0x000b2961
    
    # 总磁盘又分了三个区 /dev/sda1, /dev/sda2, /dev/sda3
    # 新添加一个分区 /dev/sda4
       Device Boot      Start         End      Blocks   Id  System
    /dev/sda1   *        2048     2099199     1048576   83  Linux
    /dev/sda2         2099200    41943039    19921920   8e  Linux LVM
    /dev/sda3        41943040    62914559    10485760   8e  Linux LVM
    
    # 根分区,现在空间是28.4G,扩展的分区就是这个
    Disk /dev/mapper/centos-root: 28.4 GB, 28449964032 bytes, 55566336 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
    
    # 交换分区
    Disk /dev/mapper/centos-swap: 2147 MB, 2147483648 bytes, 4194304 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
    
    1. 执行 fdisk /dev/sda,运行分区程序
    [root@localhost docker]# 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): m
    Command action
       a   toggle a bootable flag
       b   edit bsd disklabel
       c   toggle the dos compatibility flag
       d   delete a partition
       g   create a new empty GPT partition table
       G   create an IRIX (SGI) partition table
       l   list known partition types
       m   print this menu
       n   add a new partition
       o   create a new empty DOS partition table
       p   print the partition table
       q   quit without saving changes
       s   create a new empty Sun disklabel
       t   change a partition's system id
       u   change display/entry units
       v   verify the partition table
       w   write table to disk and exit
       x   extra functionality (experts only)
    
    Command (m for help): n  # 创建分区
    Partition type:
       p   primary (3 primary, 0 extended, 1 free)
       e   extended
    Select (default e): p  # 选择 primary
    # 分配扇区,一直按enter选择默认即可
    Selected partition 4
    First sector (62914560-83886079, default 62914560): 
    Using default value 62914560
    Last sector, +sectors or +size{K,M,G} (62914560-83886079, default 83886079): 
    Using default value 83886079
    Partition 4 of type Linux and of size 10 GiB is set
    
    # print 显示分区表
    Command (m for help): print
    
    Disk /dev/sda: 42.9 GB, 42949672960 bytes, 83886080 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: 0x000b2961
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sda1   *        2048     2099199     1048576   83  Linux
    /dev/sda2         2099200    41943039    19921920   8e  Linux LVM
    /dev/sda3        41943040    62914559    10485760   8e  Linux LVM
    /dev/sda4        62914560    83886079    10485760   83  Linux      # 新增的/dev/sda4显示出来了,但注意最后一列的 System是 Linux,Id是83
    
    # 修改 system Id
    Command (m for help): t
    Partition number (1-4, default 4): 
    Hex code (type L to list all codes): 8e
    # Changed type of partition 'Linux' to 'Linux LVM'
    Changed type of partition 'Linux' to 'Linux LVM'
    
    Command (m for help): print
    
    Disk /dev/sda: 42.9 GB, 42949672960 bytes, 83886080 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: 0x000b2961
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sda1   *        2048     2099199     1048576   83  Linux
    /dev/sda2         2099200    41943039    19921920   8e  Linux LVM
    /dev/sda3        41943040    62914559    10485760   8e  Linux LVM
    /dev/sda4        62914560    83886079    10485760   8e  Linux LVM   # 此时已经变过来
    
    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.
    [root@localhost docker]# partprobe   # 通知系统分区表的变化:
    

    参考

    1. 按顺序执行一下步骤
    [root@localhost docker]# pvcreate /dev/sda4  # 将物理硬盘分区初始化为物理卷,以便LVM使用:
      Physical volume "/dev/sda4" successfully created.
    [root@localhost docker]# pvdisplay  # 显示物理卷
      --- 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               iVGBdN-Ex37-Sr63-RDyp-YOht-nmlx-jHBKoR
       
      --- Physical volume ---
      PV Name               /dev/sda3
      VG Name               centos
      PV Size               10.00 GiB / not usable 4.00 MiB
      Allocatable           yes 
      PE Size               4.00 MiB
      Total PE              2559
      Free PE               127
      Allocated PE          2432
      PV UUID               PNayEO-HG4z-ency-1tqP-rSS8-OOJk-fKyswF
      
      # 新增物理卷/dev/sda4, 但没有VG name
      "/dev/sda4" is a new physical volume of "10.00 GiB"
      --- NEW Physical volume ---
      PV Name               /dev/sda4
      VG Name               
      PV Size               10.00 GiB
      Allocatable           NO
      PE Size               0   
      Total PE              0
      Free PE               0
      Allocated PE          0
      PV UUID               JeWnV9-FqjU-7HPf-d1WH-ULzZ-513C-DBKXZr
    
    # 将初始化过的分区加入到虚拟卷组centos:  
    # 如果 /dev/sda4的 system I不是8e,则这一步执行失败 
    [root@localhost docker]# vgextend centos /dev/sda4  # 将/dev/sda4添加到卷组centos
      Volume group "centos" successfully extended
    [root@localhost docker]# 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               iVGBdN-Ex37-Sr63-RDyp-YOht-nmlx-jHBKoR
       
      --- Physical volume ---
      PV Name               /dev/sda3
      VG Name               centos
      PV Size               10.00 GiB / not usable 4.00 MiB
      Allocatable           yes 
      PE Size               4.00 MiB
      Total PE              2559
      Free PE               127
      Allocated PE          2432
      PV UUID               PNayEO-HG4z-ency-1tqP-rSS8-OOJk-fKyswF
      
      # 已添加到卷组 
      --- Physical volume ---
      PV Name               /dev/sda4
      VG Name               centos
      PV Size               10.00 GiB / not usable 4.00 MiB
      Allocatable           yes 
      PE Size               4.00 MiB
      Total PE              2559
      Free PE               2559
      Allocated PE          0
      PV UUID               JeWnV9-FqjU-7HPf-d1WH-ULzZ-513C-DBKXZr
    
    
    1. 扩容
    [root@localhost docker]# lvresize -L +10G /dev/mapper/centos-root  # 扩展逻辑卷 lv resize
      Size of logical volume centos/root changed from <26.50 GiB (6783 extents) to <36.50 GiB (9343 extents).
      Logical volume centos/root successfully resized.
    
    [root@localhost docker]# xfs_growfs /dev/mapper/centos-root    # 就理解为格式化操作
    meta-data=/dev/mapper/centos-root isize=512    agcount=7, agsize=1113856 blks
             =                       sectsz=512   attr=2, projid32bit=1
             =                       crc=1        finobt=0 spinodes=0
    data     =                       bsize=4096   blocks=6945792, 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 6945792 to 9567232
    
    1. df -h
    [root@localhost docker]# df -h
    Filesystem               Size  Used Avail Use% Mounted on
    devtmpfs                 898M     0  898M   0% /dev
    tmpfs                    910M     0  910M   0% /dev/shm
    tmpfs                    910M  9.5M  901M   2% /run
    tmpfs                    910M     0  910M   0% /sys/fs/cgroup
    /dev/mapper/centos-root   37G   17G   20G  47% /                 # 可以看到,已经扩容了
    /dev/sda1               1014M  150M  865M  15% /boot
    tmpfs                    182M     0  182M   0% /run/user/1000
    tmpfs                    182M     0  182M   0% /run/user/0
    
  • 相关阅读:
    结合grabcut和inpaint,实现人像去除
    配置zbar识别二维码()
    自己动手,实现“你的名字”滤镜
    prometheus监控进程
    xen vhdutil 工具检查找到依赖父子关系
    如何选择最合适的DNS
    dockercompose一直创建中
    centos7/8添加附加ip,添加子集ip
    Prometheus系统下vmware_exporter配置
    docker的监控cAdvisor
  • 原文地址:https://www.cnblogs.com/catelina/p/15227268.html
Copyright © 2020-2023  润新知