阿里云ECS磁盘扩容

环境:
OS:Centos 7

 

1.控制台添加云盘

 

2.创建pv
pvcreate /dev/sdc

 

3.扩充VG

[root@19c ~]# vgs
  VG     #PV #LV #SN Attr   VSize  VFree
  centos   2   2   0 wz--n- 42.99g    0 

[root@19c ~]# vgextend centos /dev/sdc
  Volume group "centos" successfully extended

 

4.扩充LV

[root@19c ~]# lvdisplay
  --- Logical volume ---
  LV Path                /dev/centos/swap
  LV Name                swap
  VG Name                centos
  LV UUID                1s5Iwx-Zr4D-H6Xa-z8wu-VVIC-F7EJ-VkIrxh
  LV Write Access        read/write
  LV Creation host, time 19c, 2023-02-13 02:18:05 -0500
  LV Status              available
  # open                 2
  LV Size                4.00 GiB
  Current LE             1024
  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                AQS4Y1-D6Pn-pGmL-0JUb-KCs5-w8dk-WEulby
  LV Write Access        read/write
  LV Creation host, time 19c, 2023-02-13 02:18:06 -0500
  LV Status              available
  # open                 1
  LV Size                38.99 GiB
  Current LE             9982
  Segments               2
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     8192
  Block device           253:0
   


[root@19c ~]# lvresize -l +100%FREE /dev/centos/root
  Size of logical volume centos/root changed from 38.99 GiB (9982 extents) to <42.99 GiB (11005 extents).
  Logical volume centos/root successfully resized.

 

5.扩充文件系统

[root@19c ~]# df -h
Filesystem               Size  Used Avail Use% Mounted on
devtmpfs                 2.9G     0  2.9G   0% /dev
tmpfs                    2.9G     0  2.9G   0% /dev/shm
tmpfs                    2.9G  9.0M  2.9G   1% /run
tmpfs                    2.9G     0  2.9G   0% /sys/fs/cgroup
/dev/mapper/centos-root   39G   28G   12G  70% /
/dev/sda1               1014M  161M  854M  16% /boot
tmpfs                    581M     0  581M   0% /run/user/0

[root@19c ~]# xfs_growfs /
meta-data=/dev/mapper/centos-root isize=512    agcount=5, agsize=2293504 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0 spinodes=0
data     =                       bsize=4096   blocks=10221568, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal               bsize=4096   blocks=4479, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 10221568 to 11269120