• LVM磁盘扩容记录


    Last login: Sat Dec 28 08:35:14 2019 from 172.17.188.7
    [root@zabbixserver ~]# ls
    anaconda-ks.cfg  core.7459  core.8020  get-pip.py  公共  模板  视频  图片  文档  下载  音乐  桌面
    [root@zabbixserver ~]# fdisk -l
    
    磁盘 /dev/sdb:53.7 GB, 53687091200 字节,104857600 个扇区
    Units = 扇区 of 1 * 512 = 512 bytes
    扇区大小(逻辑/物理):512 字节 / 512 字节
    I/O 大小(最小/最佳):512 字节 / 512 字节
    
    
    磁盘 /dev/sda:214.7 GB, 214748364800 字节,419430400 个扇区
    Units = 扇区 of 1 * 512 = 512 bytes
    扇区大小(逻辑/物理):512 字节 / 512 字节
    I/O 大小(最小/最佳):512 字节 / 512 字节
    磁盘标签类型:dos
    磁盘标识符:0x000b57af
    
       设备 Boot      Start         End      Blocks   Id  System
    /dev/sda1   *        2048     1026047      512000   83  Linux
    /dev/sda2         1026048   104857599    51915776   8e  Linux LVM
    
    磁盘 /dev/mapper/centos-root:49.0 GB, 48951721984 字节,95608832 个扇区
    Units = 扇区 of 1 * 512 = 512 bytes
    扇区大小(逻辑/物理):512 字节 / 512 字节
    I/O 大小(最小/最佳):512 字节 / 512 字节
    
    
    磁盘 /dev/mapper/centos-swap:4160 MB, 4160749568 字节,8126464 个扇区
    Units = 扇区 of 1 * 512 = 512 bytes
    扇区大小(逻辑/物理):512 字节 / 512 字节
    I/O 大小(最小/最佳):512 字节 / 512 字节
    
    [root@zabbixserver ~]# df -h
    文件系统                 容量  已用  可用 已用% 挂载点
    /dev/mapper/centos-root   46G   46G   34M  100% /
    devtmpfs                 7.8G     0  7.8G    0% /dev
    tmpfs                    7.8G     0  7.8G    0% /dev/shm
    tmpfs                    7.8G  8.9M  7.8G    1% /run
    tmpfs                    7.8G     0  7.8G    0% /sys/fs/cgroup
    /dev/sdb                  50G   12G   36G   25% /data
    /dev/sda1                497M  128M  369M   26% /boot
    tmpfs                    1.6G     0  1.6G    0% /run/user/0
    [root@zabbixserver ~]# 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):p
    
    磁盘 /dev/sda:214.7 GB, 214748364800 字节,419430400 个扇区
    Units = 扇区 of 1 * 512 = 512 bytes
    扇区大小(逻辑/物理):512 字节 / 512 字节
    I/O 大小(最小/最佳):512 字节 / 512 字节
    磁盘标签类型:dos
    磁盘标识符:0x000b57af
    
       设备 Boot      Start         End      Blocks   Id  System
    /dev/sda1   *        2048     1026047      512000   83  Linux
    /dev/sda2         1026048   104857599    51915776   8e  Linux LVM
    
    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): p
    分区号 (3,4,默认 3):3
    起始 扇区 (104857600-419430399,默认为 104857600):
    将使用默认值 104857600
    Last 扇区, +扇区 or +size{K,M,G} (104857600-419430399,默认为 419430399):
    将使用默认值 419430399
    分区 3 已设置为 Linux 类型,大小设为 150 GiB
    
    命令(输入 m 获取帮助):t
    分区号 (1-3,默认 3):3
    Hex 代码(输入 L 列出所有代码):L
    
     024  NEC DOS         81  Minix / 旧 Linu bf  Solaris        
     1  FAT12           27  隐藏的 NTFS Win 82  Linux 交换 / So c1  DRDOS/sec (FAT-
     2  XENIX root      39  Plan 9          83  Linux           c4  DRDOS/sec (FAT-
     3  XENIX usr       3c  PartitionMagic  84  OS/2 隐藏的 C:  c6  DRDOS/sec (FAT-
     4  FAT16 <32M      40  Venix 80286     85  Linux 扩展      c7  Syrinx         
     5  扩展            41  PPC PReP Boot   86  NTFS 卷集       da  非文件系统数据 
     6  FAT16           42  SFS             87  NTFS 卷集       db  CP/M / CTOS / .
     7  HPFS/NTFS/exFAT 4d  QNX4.x          88  Linux 纯文本    de  Dell 工具      
     8  AIX             4e  QNX4.x 第2部分  8e  Linux LVM       df  BootIt         
     9  AIX 可启动      4f  QNX4.x 第3部分  93  Amoeba          e1  DOS 访问       
     a  OS/2 启动管理器 50  OnTrack DM      94  Amoeba BBT      e3  DOS R/O        
     b  W95 FAT32       51  OnTrack DM6 Aux 9f  BSD/OS          e4  SpeedStor      
     c  W95 FAT32 (LBA) 52  CP/M            a0  IBM Thinkpad 休 eb  BeOS fs        
     e  W95 FAT16 (LBA) 53  OnTrack DM6 Aux a5  FreeBSD         ee  GPT            
     f  W95 扩展 (LBA)  54  OnTrackDM6      a6  OpenBSD         ef  EFI (FAT-12/16/
    10  OPUS            55  EZ-Drive        a7  NeXTSTEP        f0  Linux/PA-RISC  
    11  隐藏的 FAT12    56  Golden Bow      a8  Darwin UFS      f1  SpeedStor      
    12  Compaq 诊断     5c  Priam Edisk     a9  NetBSD          f4  SpeedStor      
    14  隐藏的 FAT16 <3 61  SpeedStor       ab  Darwin 启动     f2  DOS 次要       
    16  隐藏的 FAT16    63  GNU HURD or Sys af  HFS / HFS+      fb  VMware VMFS    
    17  隐藏的 HPFS/NTF 64  Novell Netware  b7  BSDI fs         fc  VMware VMKCORE 
    18  AST 智能睡眠    65  Novell Netware  b8  BSDI swap       fd  Linux raid 自动
    1b  隐藏的 W95 FAT3 70  DiskSecure 多启 bb  Boot Wizard 隐  fe  LANstep        
    1c  隐藏的 W95 FAT3 75  PC/IX           be  Solaris 启动    ff  BBT            
    1e  隐藏的 W95 FAT1 80  旧 Minix       
    Hex 代码(输入 L 列出所有代码):8e
    已将分区“Linux”的类型更改为“Linux LVM”
    
    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@zabbixserver ~]# fdisk -l
    
    磁盘 /dev/sdb:53.7 GB, 53687091200 字节,104857600 个扇区
    Units = 扇区 of 1 * 512 = 512 bytes
    扇区大小(逻辑/物理):512 字节 / 512 字节
    I/O 大小(最小/最佳):512 字节 / 512 字节
    
    
    磁盘 /dev/sda:214.7 GB, 214748364800 字节,419430400 个扇区
    Units = 扇区 of 1 * 512 = 512 bytes
    扇区大小(逻辑/物理):512 字节 / 512 字节
    I/O 大小(最小/最佳):512 字节 / 512 字节
    磁盘标签类型:dos
    磁盘标识符:0x000b57af
    
       设备 Boot      Start         End      Blocks   Id  System
    /dev/sda1   *        2048     1026047      512000   83  Linux
    /dev/sda2         1026048   104857599    51915776   8e  Linux LVM
    /dev/sda3       104857600   419430399   157286400   8e  Linux LVM
    
    磁盘 /dev/mapper/centos-root:49.0 GB, 48951721984 字节,95608832 个扇区
    Units = 扇区 of 1 * 512 = 512 bytes
    扇区大小(逻辑/物理):512 字节 / 512 字节
    I/O 大小(最小/最佳):512 字节 / 512 字节
    
    
    磁盘 /dev/mapper/centos-swap:4160 MB, 4160749568 字节,8126464 个扇区
    Units = 扇区 of 1 * 512 = 512 bytes
    扇区大小(逻辑/物理):512 字节 / 512 字节
    I/O 大小(最小/最佳):512 字节 / 512 字节
    
    [root@zabbixserver ~]# partprobe
    [root@zabbixserver ~]# mkfs.ext3 /dev/sda3
    mke2fs 1.42.9 (28-Dec-2013)
    文件系统标签=
    OS type: Linux
    块大小=4096 (log=2)
    分块大小=4096 (log=2)
    Stride=0 blocks, Stripe width=0 blocks
    9830400 inodes, 39321600 blocks
    1966080 blocks (5.00%) reserved for the super user
    第一个数据块=0
    Maximum filesystem blocks=4294967296
    1200 block groups
    32768 blocks per group, 32768 fragments per group
    8192 inodes per group
    Superblock backups stored on blocks: 
            32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 
            4096000, 7962624, 11239424, 20480000, 23887872
    
    Allocating group tables: 完成                            
    正在写入inode表: 完成                            
    Creating journal (32768 blocks): 完成
    Writing superblocks and filesystem accounting information: 完成     
    
    [root@zabbixserver ~]# lvm
    lvm> pvcreate /dev/sda3
    WARNING: ext3 signature detected on /dev/sda3 at offset 1080. Wipe it? [y/n]: y
      Wiping ext3 signature on /dev/sda3.
      Physical volume "/dev/sda3" successfully created.
    lvm> vgextend centos /dev/sda3
      Volume group "centos" successfully extended
    lvm> vgdisplay -v
      --- Volume group ---
      VG Name               centos
      System ID             
      Format                lvm2
      Metadata Areas        2
      Metadata Sequence No  5
      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               199.50 GiB
      PE Size               4.00 MiB
      Total PE              51073
      Alloc PE / Size       12663 / 49.46 GiB
      Free  PE / Size       38410 / <150.04 GiB
      VG UUID               u3onLh-kUbe-xZam-Rtax-cpRI-8Vzd-71bl7h
       
      --- Logical volume ---
      LV Path                /dev/centos/swap
      LV Name                swap
      VG Name                centos
      LV UUID                03PuaA-Spad-RrT2-5tou-bi06-XhJd-WNENCH
      LV Write Access        read/write
      LV Creation host, time localhost, 2019-03-07 15:41:40 +0800
      LV Status              available
      # open                 2
      LV Size                <3.88 GiB
      Current LE             992
      Segments               1
      Allocation             inherit
      Read ahead sectors     auto
      - currently set to     8192
      Block device           253:1
       
      --- Logical volume ---
      LV Path                /dev/centos/root
      LV Name                root
      VG Name                centos
      LV UUID                PGCZ4p-khNK-sFot-dAID-nw9s-WS3s-p4kKxt
      LV Write Access        read/write
      LV Creation host, time localhost, 2019-03-07 15:41:40 +0800
      LV Status              available
      # open                 1
      LV Size                <45.59 GiB
      Current LE             11671
      Segments               1
      Allocation             inherit
      Read ahead sectors     auto
      - currently set to     8192
      Block device           253:0
       
      --- Physical volumes ---
      PV Name               /dev/sda2     
      PV UUID               sfEsrt-bcRH-iOq8-ex0L-hbiy-2T4h-C4f7ZH
      PV Status             allocatable
      Total PE / Free PE    12674 / 11
       
      PV Name               /dev/sda3     
      PV UUID               bKdwap-3QLi-V6Cu-ijEI-45j3-Yy2P-QAm9q9
      PV Status             allocatable
      Total PE / Free PE    38399 / 38399
       
    lvm> lvextend -l+38410 /dev/mapper/centos-root
      Size of logical volume centos/root changed from <45.59 GiB (11671 extents) to <195.63 GiB (50081 extents).
      Logical volume centos/root successfully resized.
    lvm> pvdisplay
      --- Physical volume ---
      PV Name               /dev/sda2
      VG Name               centos
      PV Size               49.51 GiB / not usable 3.00 MiB
      Allocatable           yes (but full)
      PE Size               4.00 MiB
      Total PE              12674
      Free PE               0
      Allocated PE          12674
      PV UUID               sfEsrt-bcRH-iOq8-ex0L-hbiy-2T4h-C4f7ZH
       
      --- Physical volume ---
      PV Name               /dev/sda3
      VG Name               centos
      PV Size               150.00 GiB / not usable 4.00 MiB
      Allocatable           yes (but full)
      PE Size               4.00 MiB
      Total PE              38399
      Free PE               0
      Allocated PE          38399
      PV UUID               bKdwap-3QLi-V6Cu-ijEI-45j3-Yy2P-QAm9q9
       
    lvm> exit
      Exiting.
    [root@zabbixserver ~]# cat /etc/redhat-release 
    CentOS Linux release 7.6.1810 (Core) 
    [root@zabbixserver ~]# xfs_growfs /dev/mapper/centos-root
    meta-data=/dev/mapper/centos-root isize=256    agcount=4, agsize=2987776 blks
             =                       sectsz=512   attr=2, projid32bit=1
             =                       crc=0        finobt=0
    data     =                       bsize=4096   blocks=11951104, imaxpct=25
             =                       sunit=0      swidth=0 blks
    naming   =version 2              bsize=4096   ascii-ci=0 ftype=0
    log      =internal               bsize=4096   blocks=5835, version=2
             =                       sectsz=512   sunit=0 blks, lazy-count=1
    realtime =none                   extsz=4096   blocks=0, rtextents=0
    data blocks changed from 11951104 to 51282944
    [root@zabbixserver ~]#  df -h 
    df:无效选项 -- ?Try 'df --help' for more information.
    [root@zabbixserver ~]# df -h
    文件系统                 容量  已用  可用 已用% 挂载点
    /dev/mapper/centos-root  196G   46G  151G   24% /
    devtmpfs                 7.8G     0  7.8G    0% /dev
    tmpfs                    7.8G     0  7.8G    0% /dev/shm
    tmpfs                    7.8G  8.9M  7.8G    1% /run
    tmpfs                    7.8G     0  7.8G    0% /sys/fs/cgroup
    /dev/sdb                  50G   12G   36G   25% /data
    /dev/sda1                497M  128M  369M   26% /boot
    tmpfs                    1.6G     0  1.6G    0% /run/user/0
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  • 原文地址:https://www.cnblogs.com/sonnyBag/p/12110774.html
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