Centos7.5磁盘扩容XFS格式

2019-10-28  本文已影响0人  胸口砕大石

虚拟机上增加磁盘容量50G,然后重启系统reboot

VM操作

查看磁盘格式

$ df -T

只可以查看已经挂载的分区和文件系统类型。

[root@dockerRepository ~]# df -T
文件系统                类型         1K-块    已用      可用 已用% 挂载点
devtmpfs                devtmpfs   1927152       0   1927152    0% /dev
tmpfs                   tmpfs      1938928       0   1938928    0% /dev/shm
tmpfs                   tmpfs      1938928    9052   1929876    1% /run
tmpfs                   tmpfs      1938928       0   1938928    0% /sys/fs/cgroup
/dev/mapper/centos-root xfs       52403200 1770988  50632212    4% /
/dev/mapper/centos-home xfs      257000900   33856 256967044    1% /home
/dev/sda1               xfs        1038336  192308    846028   19% /boot
tmpfs                   tmpfs       387788       0    387788    0% /run/user/0

查看磁盘格式

$ fdisk -l

可以显示出所有挂载和未挂载的分区,但不显示文件系统类型。

磁盘 /dev/sda:322.1 GB, 322122547200 字节,629145600 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:0x000b6894

   设备 Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048     2099199     1048576   83  Linux
/dev/sda2         2099200   209715199   103808000   8e  Linux LVM
/dev/sda3       209715200   629145599   209715200   8e  Linux LVM

磁盘 /dev/mapper/centos-root: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/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


磁盘 /dev/mapper/centos-home:263.2 GB, 263192576000 字节,514048000 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
$ parted -l

可以查看未挂载的文件系统类型,以及哪些分区尚未格式化。

Model: VMware Virtual disk (scsi)
Disk /dev/sda: 322GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type     File system  标志
 1      1049kB  1075MB  1074MB  primary  xfs          启动
 2      1075MB  107GB   106GB   primary               lvm
 3      107GB   322GB   215GB   primary               lvm


Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/centos-home: 263GB
Sector size (logical/physical): 512B/512B
Partition Table: loop
Disk Flags: 

Number  Start  End    Size   File system  标志
 1      0.00B  263GB  263GB  xfs


Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/centos-swap: 4161MB
Sector size (logical/physical): 512B/512B
Partition Table: loop
Disk Flags: 

Number  Start  End     Size    File system     标志
 1      0.00B  4161MB  4161MB  linux-swap(v1)


Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/centos-root: 53.7GB
Sector size (logical/physical): 512B/512B
Partition Table: loop
Disk Flags: 

Number  Start  End     Size    File system  标志
 1      0.00B  53.7GB  53.7GB  xfs


警告: 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。
Model: NECVMWar VMware IDE CDR10 (scsi)                                   
Disk /dev/sr0: 4589MB
Sector size (logical/physical): 2048B/2048B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type     File system  标志
 2      4907kB  40.6MB  35.7MB  primary

$ lsblk -f 

可以查看未挂载的文件系统类型。

NAME            FSTYPE      LABEL           UUID                                   MOUNTPOINT
fd0                                                                                
sda                                                                                
├─sda1          xfs                         24dc261f-1dd1-4b5d-b213-f2321c35a52e   /boot
├─sda2          LVM2_member                 1tGdhn-71TX-2CqF-IRrw-tj81-WaY3-E2J94O 
│ ├─centos-root xfs                         ce0cef69-01ff-4ea5-8066-d80cd046e24e   /
│ ├─centos-swap swap                        a30b5456-dc32-4e64-ba3b-ea4d603d87bf   [SWAP]
│ └─centos-home xfs                         d4aeedb6-182f-42b2-81fb-3a901356fb9e   /home
└─sda3          LVM2_member                 DzgDhI-1iCe-iukT-GEiA-jjN2-y5sQ-fPhqy4 
  └─centos-home xfs                         d4aeedb6-182f-42b2-81fb-3a901356fb9e   /home
sr0             iso9660     CentOS 7 x86_64 2018-11-25-23-54-16-00                 

开始扩容

$ 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):

输入m

命令(输入 m 获取帮助):m
命令操作
   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)

命令(输入 m 获取帮助):

输入n,新建

Partition type:
   p   primary (3 primary, 0 extended, 1 free)
   e   extended
Select (default e): 

输入p,新建

已选择分区 4
起始 扇区 (629145600-734003199,默认为 629145600):

起始扇区与结束扇区 默认回车 获取最大值

起始 扇区 (629145600-734003199,默认为 629145600):
将使用默认值 629145600
Last 扇区, +扇区 or +size{K,M,G} (629145600-734003199,默认为 734003199):
将使用默认值 734003199
分区 4 已设置为 Linux 类型,大小设为 50 GiB

设置分区格式 t - 4 - L

分区号 (1-4,默认 4):4
Hex 代码(输入 L 列出所有代码):L

 0  空              24  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):

设置为 8e lvm格式

已将分区“Linux”的类型更改为“Linux LVM”

输入p 查询

磁盘 /dev/sda:375.8 GB, 375809638400 字节,734003200 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:0x000b6894

   设备 Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048     2099199     1048576   83  Linux
/dev/sda2         2099200   209715199   103808000   8e  Linux LVM
/dev/sda3       209715200   629145599   209715200   8e  Linux LVM
/dev/sda4       629145600   734003199    52428800   8e  Linux LVM

磁盘已经扩充过1次 sda3,本次为第二次扩充sda4
退出fdisk ctrl c

输入w写入分区

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。

重启reboot!

创建物理卷

$ pvcreate /dev/sda4
  Physical volume "/dev/sda4" successfully created.

查看物理卷

$ pvdisplay
   --- Physical volume ---
  PV Name               /dev/sda2
  VG Name               centos
  PV Size               <99.00 GiB / not usable 3.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              25343
  Free PE               0
  Allocated PE          25343
  PV UUID               1tGdhn-71TX-2CqF-IRrw-tj81-WaY3-E2J94O
   
  --- Physical volume ---
  PV Name               /dev/sda3
  VG Name               centos
  PV Size               200.00 GiB / not usable 4.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              51199
  Free PE               0
  Allocated PE          51199
  PV UUID               DzgDhI-1iCe-iukT-GEiA-jjN2-y5sQ-fPhqy4
   
  "/dev/sda4" is a new physical volume of "50.00 GiB"
  --- NEW Physical volume ---
  PV Name               /dev/sda4
  VG Name               
  PV Size               50.00 GiB
  Allocatable           NO
  PE Size               0   
  Total PE              0
  Free PE               0
  Allocated PE          0
  PV UUID               CVOCOi-4dK2-tlh9-zjSC-m6Rh-BYbq-flqtQe

sda4 50gb为心扩充磁盘

$ vgdisplay
  --- Volume group ---
  VG Name               centos
  System ID             
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  6
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                3
  Open LV               3
  Max PV                0
  Cur PV                2
  Act PV                2
  VG Size               298.99 GiB
  PE Size               4.00 MiB
  Total PE              76542
  Alloc PE / Size       76542 / 298.99 GiB
  Free  PE / Size       0 / 0   
  VG UUID               gPWtPa-dR7U-43HL-KkAq-PTLK-l7GF-pF1Ekf

这时候还看不到扩充的磁盘,free空间为0

将新增的分区加入/dev/sda4加入到根目录分区centos中,名字为上面结果中的VG name

$ vgextend centos /dev/sda4
  Volume group "centos" successfully extended

重新查看卷组信息

$ vgdisplay
  --- Volume group ---
  VG Name               centos
  System ID             
  Format                lvm2
  Metadata Areas        3
  Metadata Sequence No  7
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                3
  Open LV               3
  Max PV                0
  Cur PV                3
  Act PV                3
  VG Size               <348.99 GiB
  PE Size               4.00 MiB
  Total PE              89341
  Alloc PE / Size       76542 / 298.99 GiB
  Free  PE / Size       12799 / <50.00 GiB
  VG UUID               gPWtPa-dR7U-43HL-KkAq-PTLK-l7GF-pF1Ekf

free PE 为50GB

进行卷扩容,名字在df -T结果中

文件系统                类型         1K-块    已用      可用 已用% 挂载点
devtmpfs                devtmpfs   1927144       0   1927144    0% /dev
tmpfs                   tmpfs      1938920       0   1938920    0% /dev/shm
tmpfs                   tmpfs      1938920    9056   1929864    1% /run
tmpfs                   tmpfs      1938920       0   1938920    0% /sys/fs/cgroup
/dev/mapper/centos-root xfs       52403200 1771032  50632168    4% /
/dev/mapper/centos-home xfs      257000900   33856 256967044    1% /home
/dev/sda1               xfs        1038336  192308    846028   19% /boot
tmpfs                   tmpfs       387788       0    387788    0% /run/user/0
$ lvextend -l +100%FREE /dev/mapper/centos-home
  Size of logical volume centos/home changed from <245.12 GiB (62750 extents) to 295.11 GiB (75549 extents).
  Logical volume centos/home successfully resized.

调整卷分区大小

$ xfs_growfs /dev/mapper/centos-home
meta-data=/dev/mapper/centos-home isize=512    agcount=22, agsize=2956800 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0 spinodes=0
data     =                       bsize=4096   blocks=64256000, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal               bsize=4096   blocks=5775, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 64256000 to 77362176

df -h查看扩容成功

文件系统                 容量  已用  可用 已用% 挂载点
devtmpfs                 1.9G     0  1.9G    0% /dev
tmpfs                    1.9G     0  1.9G    0% /dev/shm
tmpfs                    1.9G  8.9M  1.9G    1% /run
tmpfs                    1.9G     0  1.9G    0% /sys/fs/cgroup
/dev/mapper/centos-root   50G  1.7G   49G    4% /
/dev/mapper/centos-home  296G   34M  296G    1% /home
/dev/sda1               1014M  188M  827M   19% /boot
tmpfs                    379M     0  379M    0% /run/user/0
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