LVM - LV 사이즈 확장

2020.08.04

 

1. 디스트 현환 조회

# lsblk
NAME                                               MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda                                                  8:0    0 111.8G  0 disk
├─sda1                                               8:1    0   200M  0 part /boot/efi
├─sda2                                               8:2    0     1G  0 part /boot
└─sda3                                               8:3    0 110.6G  0 part
  ├─centos-root                                    253:0    0    50G  0 lvm  /
  └─centos-swap                                    253:1    0  15.6G  0 lvm
…
# lvscan
  WARNING: Device for PV WW1CSe-5oqs-KdaW-aaGk-3E0J-PAit-6Lpnww not found or rejected by a filter.
  Couldn't find device with uuid WW1CSe-5oqs-KdaW-aaGk-3E0J-PAit-6Lpnww.
  ACTIVE            '/dev/centos/swap' [15.62 GiB] inherit
  inactive          '/dev/centos/home' [510.91 GiB] inherit
  ACTIVE            '/dev/centos/root' [50.00 GiB] inherit
#

 

2. LV 삭제

# lvremove /dev/centos/home
  Logical volume "home" successfully removed
#

 

3. unkown VG 삭제

--removemissing

   Removes all missing physical volumes from the volume group, if there are no logical volumes allocated on those.

# pvs
  WARNING: Device for PV Uyiq5J-nZkw-4bsO-n2tD-pJTn-hi7u-njDvcY not found or rejected by a filter.
  Couldn't find device with uuid Uyiq5J-nZkw-4bsO-n2tD-pJTn-hi7u-njDvcY.
  PV         VG     Fmt  Attr PSize    PFree
  /dev/sda3  centos lvm2 a--  <110.59g   44.96g
  [unknown]  centos lvm2 a-m  <465.76g <465.76g
#
# vgreduce --removemissing centos
  WARNING: Device for PV Uyiq5J-nZkw-4bsO-n2tD-pJTn-hi7u-njDvcY not found or rejected by a filter.
  Couldn't find device with uuid Uyiq5J-nZkw-4bsO-n2tD-pJTn-hi7u-njDvcY.
  Wrote out consistent volume group centos.
#
# pvs
  PV         VG     Fmt  Attr PSize    PFree
  /dev/sda3  centos lvm2 a--  <110.59g   44.96g
#

 

4. LV 사이즈 확장

# lvextend -L +44G /dev/centos/root
  Size of logical volume centos/root changed from 50.14 GiB (12836 extents) to 90.14 GiB (23076 extents).
  Logical volume centos/root successfully resized.
#
# lvs
  LV   VG     Attr       LSize  Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  root centos -wi-ao---- 90.14g
  swap centos -wi-a----- 15.62g
#

 

5. xfs 파일 시스템 확장

# 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 23629824
#
# df -h | egrep "File|centos-root"
Filesystem               Size  Used Avail Use% Mounted on
/dev/mapper/centos-root   91G   43G   48G  47% /
#