LVM-给原有VG扩容

给原有VG扩容

先使用lsblk查看磁盘信息

# 可以看到vdb这块磁盘还有50G空间没有使用。可以给它加到现有的/data里来
[root@ics-prod ~]# lsblk 
NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
fd0               2:0    1    4K  0 disk 
sr0              11:0    1 1024M  0 rom  
vda             252:0    0  100G  0 disk 
├─vda1          252:1    0    1G  0 part /boot
└─vda2          252:2    0   99G  0 part 
  ├─centos-root 253:0    0   50G  0 lvm  /
  ├─centos-swap 253:1    0  7.9G  0 lvm  [SWAP]
  └─centos-home 253:2    0 41.1G  0 lvm  /home
vdb             252:16   0  400G  0 disk 
└─vgdata-lvdata 253:3    0  350G  0 lvm  /data

使用pvresize扫描磁盘

[root@ics-prod ~]# pvresize /dev/vdb
  Physical volume "/dev/vdb" changed
  1 physical volume(s) resized or updated / 0 physical volume(s) not resized
[root@ics-prod ~]# lvs
  LV     VG     Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  home   centos -wi-ao---- <41.12g                                                    
  root   centos -wi-ao----  50.00g                                                    
  swap   centos -wi-ao----  <7.88g                                                    
  lvdata vgdata -wi-ao---- 350.00g                                                    
[root@ics-prod ~]# pvs
  PV         VG     Fmt  Attr PSize    PFree  
  /dev/vda2  centos lvm2 a--   <99.00g   4.00m
  /dev/vdb   vgdata lvm2 a--  <400.00g <50.00g

扩容lv和文件系统

[root@ics-prod ~]# lvextend -l +100%FREE /dev/mapper/vgdata-lvdata
  Size of logical volume vgdata/lvdata changed from 350.00 GiB (89600 extents) to <400.00 GiB (102399 extents).
  Logical volume vgdata/lvdata successfully resized.
[root@ics-prod ~]# df -h 
文件系统                   容量  已用  可用 已用% 挂载点
devtmpfs                   7.8G     0  7.8G    0% /dev
tmpfs                      7.8G     0  7.8G    0% /dev/shm
tmpfs                      7.8G  785M  7.0G   10% /run
tmpfs                      7.8G     0  7.8G    0% /sys/fs/cgroup
/dev/mapper/centos-root     50G   20G   31G   40% /
/dev/vda1                 1014M  194M  821M   20% /boot
/dev/mapper/vgdata-lvdata  350G  175G  176G   50% /data
/dev/mapper/centos-home     42G  929M   41G    3% /home
tmpfs                      3.2G     0  3.2G    0% /run/user/0
overlay                     50G   20G   31G   40% /var/lib/docker/overlay2/aea61d0d5be06da225f205b14c0806c27c5c9aaefbd9a030dfcfd295ba14a304/merged
[root@ics-prod ~]# xfs_growfs /dev/mapper/vgdata-lvdata
meta-data=/dev/mapper/vgdata-lvdata isize=512    agcount=4, agsize=22937600 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0 spinodes=0
data     =                       bsize=4096   blocks=91750400, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal               bsize=4096   blocks=44800, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 91750400 to 104856576
[root@ics-prod ~]# df -h 
文件系统                   容量  已用  可用 已用% 挂载点
devtmpfs                   7.8G     0  7.8G    0% /dev
tmpfs                      7.8G     0  7.8G    0% /dev/shm
tmpfs                      7.8G  785M  7.0G   10% /run
tmpfs                      7.8G     0  7.8G    0% /sys/fs/cgroup
/dev/mapper/centos-root     50G   20G   31G   40% /
/dev/vda1                 1014M  194M  821M   20% /boot
/dev/mapper/vgdata-lvdata  400G  175G  226G   44% /data
/dev/mapper/centos-home     42G  929M   41G    3% /home
tmpfs                      3.2G     0  3.2G    0% /run/user/0
overlay                     50G   20G   31G   40% /var/lib/docker/overlay2/aea61d0d5be06da225f205b14c0806c27c5c9aaefbd9a030dfcfd295ba14a304/merged