redhat 添加新硬盘到lvm

Redhat添加新的硬盘到卷组中

1. 创建物理卷

   [[email protected] ~]# pvcreate /dev/sda  #将整个磁盘创建为物理卷的命令
   Physical volume "/dev/sda" successfully created.
   [[email protected] ~]# pvcreate /dev/sdc1  #将单个分区创建为物理卷的命令为：
   Physical volume "/dev/sdc1" successfully created
   

2. 添加新的物理卷到卷组中

   [[email protected] ~]# vgdisplay  #查看现有的卷组
     --- Volume group ---
     VG Name               rhel
     System ID             
     Format                lvm2
     Metadata Areas        1
     Metadata Sequence No  3
     VG Access             read/write
     VG Status             resizable
     MAX LV                0
     Cur LV                2
     Open LV               2
     Max PV                0
     Cur PV                1
     Act PV                1
     VG Size               <29.00 GiB
     PE Size               4.00 MiB
     Total PE              7423
     Alloc PE / Size       7423 / <29.00 GiB
     Free  PE / Size       0 / 0   
     VG UUID               zp9oyN-VFhi-Elkj-e7Q5-P6Qd-Udc6-zRO4YA
   [[email protected] ~]# vgextend rhel /dev/sda  #将物理卷添加到卷组中
     Volume group "rhel" successfully extended
   [[email protected] ~]# vgs   #显示卷组空间
     VG   #PV #LV #SN Attr   VSize  VFree  
     rhel   2   2   0 wz--n- 58.99g <30.00g
   

3. 扩展现有的逻辑卷

   [[email protected] ~]# lvextend /dev/rhel/root -L +26G    #空间增加26GB
     Rounding size to boundary between physical extents: 26.00 GiB.
     Size of logical volume rhel/root changed from <52.00 GiB (13311 extents) to <53.00 GiB (13567 extents).
     Logical volume rhel/root successfully resized.
   [[email protected] ~]# xfs_growfs /dev/rhel/root    #使得空间生效
   meta-data=/dev/mapper/rhel-root  isize=512    agcount=4, agsize=1703680 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0 spinodes=0
   data     =                       bsize=4096   blocks=6814720, imaxpct=25
         =                       sunit=0      swidth=0 blks
   naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
   log      =internal               bsize=4096   blocks=3327, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
   realtime =none                   extsz=4096   blocks=0, rtextents=0
   data blocks changed from 6814720 to 13630464