centos lvm卷组删卷和扩容

查看卷组

[root@localhost home]# lvdisplay 
  --- Logical volume ---
  LV Path                /dev/centos/swap
  LV Name                swap
  VG Name                centos
  LV UUID                bA7z4a-Fk9h-6QRM-MZPO-QFNs-xLd1-hy03P0
  LV Write Access        read/write
  LV Creation host, time localhost, 2018-02-12 08:04:39 +0800
  LV Status              available
  # open                 2
  LV Size                7.81 GiB
  Current LE             2000
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:1
   
  --- Logical volume ---
  LV Path                /dev/centos/home
  LV Name                home
  VG Name                centos
  LV UUID                tDDV4y-T573-5sd1-lHQW-k4Wv-xtQm-T9f5AI
  LV Write Access        read/write
  LV Creation host, time localhost, 2018-02-12 08:04:40 +0800
  LV Status              available
  # open                 1
  LV Size                <872.18 GiB
  Current LE             223278
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:2
   
  --- Logical volume ---
  LV Path                /dev/centos/root
  LV Name                root
  VG Name                centos
  LV UUID                EEipej-RzDH-200g-DOOG-AbMe-QICp-0MnI5e
  LV Write Access        read/write
  LV Creation host, time localhost, 2018-02-12 08:04:41 +0800
  LV Status              available
  # open                 1
  LV Size                50.00 GiB
  Current LE             12800
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

删除卷组：

[root@localhost ~]# umount /dev/centos/home
[root@localhost ~]# lvremove /dev/centos/home
Do you really want to remove active logical volume centos/home? [y/n]: y
  Logical volume "home" successfully removed
[root@localhost ~]# vgs
  VG     #PV #LV #SN Attr   VSize    VFree  
  centos   1   2   0 wz--n- <930.00g 872.18g
  [root@localhost ~]# lvdisplay 
  --- Logical volume ---
  LV Path                /dev/centos/swap
  LV Name                swap
  VG Name                centos
  LV UUID                bA7z4a-Fk9h-6QRM-MZPO-QFNs-xLd1-hy03P0
  LV Write Access        read/write
  LV Creation host, time localhost, 2018-02-12 08:04:39 +0800
  LV Status              available
  # open                 2
  LV Size                7.81 GiB
  Current LE             2000
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:1
   
  --- Logical volume ---
  LV Path                /dev/centos/root
  LV Name                root
  VG Name                centos
  LV UUID                EEipej-RzDH-200g-DOOG-AbMe-QICp-0MnI5e
  LV Write Access        read/write
  LV Creation host, time localhost, 2018-02-12 08:04:41 +0800
  LV Status              available
  # open                 1
  LV Size                50.00 GiB
  Current LE             12800
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

查看Type类型：

[root@localhost ~]# df -T
Filesystem              Type     1K-blocks     Used Available Use% Mounted on
/dev/mapper/centos-root xfs       52403200 27638408  24764792  53% /
devtmpfs                devtmpfs   8095112        0   8095112   0% /dev
tmpfs                   tmpfs      8107004        0   8107004   0% /dev/shm
tmpfs                   tmpfs      8107004   459984   7647020   6% /run
tmpfs                   tmpfs      8107004        0   8107004   0% /sys/fs/cgroup
/dev/sda1               xfs        1038336   192292    846044  19% /boot
tmpfs                   tmpfs      1621404        0   1621404   0% /run/user/0

扩容：

[root@localhost ~]# lvextend -l +100%FREE /dev/centos/root
  Size of logical volume centos/root changed from 50.00 GiB (12800 extents) to 922.18 GiB (236079 extents).
  Logical volume centos/root successfully resized.
[root@localhost ~]#  xfs_growfs /dev/centos/root 
meta-data=/dev/mapper/centos-root isize=512    agcount=4, agsize=3276800 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0 spinodes=0
data     =                       bsize=4096   blocks=13107200, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal               bsize=4096   blocks=6400, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 13107200 to 241744896
[root@localhost ~]# df -h
Filesystem               Size  Used Avail Use% Mounted on
/dev/mapper/centos-root  923G   27G  896G   3% /
devtmpfs                 7.8G     0  7.8G   0% /dev
tmpfs                    7.8G     0  7.8G   0% /dev/shm
tmpfs                    7.8G  450M  7.3G   6% /run
tmpfs                    7.8G     0  7.8G   0% /sys/fs/cgroup
/dev/sda1               1014M  188M  827M  19% /boot
tmpfs                    1.6G     0  1.6G   0% /run/user/0

这个是添加硬盘

[root@localhost /]# vgextend /dev/centos00 /dev/sde1 

Physical volume “/dev/sde1” successfully created.
Volume group “centos00” successfully extended