[root@bgd-mysql3 ~]# fdisk -l

Disk /dev/sda: 107.4 GB, 107374182400 bytes, 209715200 sectors


Units = sectors of 1 * 512 = 512 bytes


Sector size (logical/physical): 512 bytes / 512 bytes


I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk label type: dos


Disk identifier: 0x000b7e20

Device Boot      Start         End      Blocks   Id  System


/dev/sda1   *        2048     2099199     1048576   83  Linux


/dev/sda2         2099200   209715199   103808000   8e  Linux LVM

Disk /dev/sdb: 966.4 GB, 966367641600 bytes, 1887436800 sectors


Units = sectors of 1 * 512 = 512 bytes


Sector size (logical/physical): 512 bytes / 512 bytes


I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/mapper/centos_bgd--ngnix1-root: 102.1 GB, 102131302400 bytes, 199475200 sectors


Units = sectors of 1 * 512 = 512 bytes


Sector size (logical/physical): 512 bytes / 512 bytes


I/O size (minimum/optimal): 512 bytes / 512 bytes



Disk /dev/mapper/centos_bgd--ngnix1-swap: 4160 MB, 4160749568 bytes, 8126464 sectors


Units = sectors of 1 * 512 = 512 bytes


Sector size (logical/physical): 512 bytes / 512 bytes


I/O size (minimum/optimal): 512 bytes / 512 bytes

[root@bgd-mysql3 ~]# pvcreate /dev/sdb

  Physical volume "/dev/sdb" successfully created.

  --- Physical volume ---

  PV Name               /dev/sda2

  VG Name               centos_bgd-ngnix1

  PV Size               <99.00 GiB / not usable 3.00 MiB

  Allocatable           yes

  PE Size               4.00 MiB

  Total PE              25343

  Free PE               1

  Allocated PE          25342

  PV UUID               vr9DRr-mwG8-89Vm-LmoV-Bqel-Ykga-HM5HLg



"/dev/sdb" is a new physical volume of "900.00 GiB"


--- NEW Physical volume ---


PV Name               /dev/sdb


VG Name


PV Size               900.00 GiB


Allocatable           NO


PE Size               0


Total PE              0


Free PE               0


Allocated PE          0


PV UUID               fhbfRd-x6qx-KVCd-3SBF-5lXN-Z81W-SIrRQz

[root@bgd-mysql3 ~]# vgdisplay

  --- Volume group ---

  VG Name               centos_bgd-ngnix1

  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               <99.00 GiB

  PE Size               4.00 MiB

  Total PE              25343

  Alloc PE / Size       25342 / 98.99 GiB

  Free  PE / Size       1 / 4.00 MiB

  VG UUID               BFGY1M-PHqr-RBnE-87t2-bhYC-n7PX-idg4R1

[root@bgd-mysql3 ~]# vgextend centos_bgd-ngnix1 /dev/sdb

  Volume group "centos_bgd-ngnix1" successfully extended

[root@bgd-mysql3 ~]# lvdisplay

  --- Logical volume ---

  LV Path                /dev/centos_bgd-ngnix1/root

  LV Name                root

  VG Name                centos_bgd-ngnix1

  LV UUID                2SnPdf-1zdM-lM5G-4fJz-oGve-JC2Z-fkTGUL

  LV Write Access        read/write

  LV Creation host, time bgd-ngnix1, 2018-11-21 13:08:20 +0800

  LV Status              available

  # open                 1

  LV Size                <95.12 GiB

  Current LE             24350

  Segments               1

  Allocation             inherit

  Read ahead sectors     auto

  - currently set to     8192

  Block device           253:0

--- Logical volume ---


LV Path                /dev/centos_bgd-ngnix1/swap


LV Name                swap


VG Name                centos_bgd-ngnix1


LV UUID                l8jyte-4j0X-00Am-ich0-9qen-QLaW-LWTSHI


LV Write Access        read/write


LV Creation host, time bgd-ngnix1, 2018-11-21 13:08:21 +0800


LV Status              available
open                 2

LV Size                ️.88 GiB


Current LE             992


Segments               1


Allocation             inherit


Read ahead sectors     auto





currently set to     8192


Block device           253:1

[root@bgd-mysql3 ~]# lvextend -l +100%FREE /dev/centos_bgd-ngnix1/root

  Size of logical volume centos_bgd-ngnix1/root changed from <95.12 GiB (24350 extents) to <995.12 GiB (254750 extents).

  Logical volume centos_bgd-ngnix1/root successfully resized.

[root@bgd-mysql3 ~]# xfs_growfs /dev/centos_bgd-ngnix1/root

meta-data=/dev/mapper/centos_bgd--ngnix1-root isize=512    agcount=4, agsize=6233600 blks

         =                       sectsz=512   attr=2, projid32bit=1

         =                       crc=1        finobt=0 spinodes=0

data     =                       bsize=4096   blocks=24934400, imaxpct=25

         =                       sunit=0      swidth=0 blks

naming   =version 2              bsize=4096   ascii-ci=0 ftype=1

log      =internal               bsize=4096   blocks=12175, version=2

         =                       sectsz=512   sunit=0 blks, lazy-count=1

realtime =none                   extsz=4096   blocks=0, rtextents=0

data blocks changed from 24934400 to 260864000

resize2fs /dev/mapper/centos-root    ---centos

[root@bgd-mysql3 ~]# df -h

Filesystem                           Size  Used Avail Use% Mounted on

/dev/mapper/centos_bgd--ngnix1-root  996G  1.7G  994G   1% /

devtmpfs                             3.9G     0  3.9G   0% /dev

tmpfs                                3.9G     0  3.9G   0% /dev/shm

tmpfs                                3.9G  8.8M  3.9G   1% /run

tmpfs                                3.9G     0  3.9G   0% /sys/fs/cgroup

/dev/sda1                           1014M  184M  831M  19% /boot

tmpfs                                783M     0  783M   0% /run/user/0