vmware vm 무중단 디스크 증설

 

 

사용중인 vm서버에 용량이 부족한것 같아 증설 진행.

단, 서비스 중단 및 파워오프 없이 진행.
 
 
현재 상태

# cat /etc/redhat-release
Rocky Linux release 8.10 (Green Obsidian)

# lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda           8:0    0   200G  0 disk
├─sda1        8:1    0     1G  0 part /boot
└─sda2        8:2    0   199G  0 part
  ├─rl-root 253:0    0    70G  0 lvm  /
  ├─rl-swap 253:1    0   7.9G  0 lvm  [SWAP]
  └─rl-home 253:2    0 121.1G  0 lvm  /home
sr0          11:0    1  1024M  0 rom

 

# df -Th
Filesystem          Type      Size  Used Avail Use% Mounted on
devtmpfs            devtmpfs  7.7G     0  7.7G   0% /dev
tmpfs               tmpfs     7.7G     0  7.7G   0% /dev/shm
tmpfs               tmpfs     7.7G  161M  7.6G   3% /run
tmpfs               tmpfs     7.7G     0  7.7G   0% /sys/fs/cgroup
/dev/mapper/rl-root xfs        70G   11G   60G  15% /
/dev/sda1           xfs      1014M  341M  674M  34% /boot
/dev/mapper/rl-home xfs       122G  1.3G  120G   2% /home
overlay             overlay    70G   11G   60G  15% /var/lib/docker/overlay2/99233c81cfab6eee98070c0b073ad7a239ea16487bb5c2dfd74fd66c246adc2a/merged
overlay             overlay    70G   11G   60G  15% /var/lib/docker/overlay2/90b68a5d7af9961ddb0462ddbe1fba95893f5d788fa49637d786bc983c22b83d/merged
overlay             overlay    70G   11G   60G  15% /var/lib/docker/overlay2/4db21e18670fd1805a9cda8c9232429613ba55cd70502f9af6a2467913800258/merged
overlay             overlay    70G   11G   60G  15% /var/lib/docker/overlay2/9a6ccd35add59ac1f9cba03e933342fbf205419c7874bce3d80b14c401034168/merged
tmpfs               tmpfs     1.6G     0  1.6G   0% /run/user/0

v센터에서 해당 vm에 디스크를 1개 추가

콘솔에 접속하여 다시 확인

# lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda           8:0    0   200G  0 disk
├─sda1        8:1    0     1G  0 part /boot
└─sda2        8:2    0   199G  0 part
  ├─rl-root 253:0    0    70G  0 lvm  /
  ├─rl-swap 253:1    0   7.9G  0 lvm  [SWAP]
  └─rl-home 253:2    0 121.1G  0 lvm  /home
sr0          11:0    1  1024M  0 rom

 
확인이 되지 않아 스캔수행

for host in /sys/class/scsi_host/host*; do
    echo "- - -" > $host/scan
done

# dmesg | grep sd
[10354418.335558] sd 2:0:1:0: Attached scsi generic sg2 type 0
[10354418.335670] sd 2:0:1:0: [sdb] 104857600 512-byte logical blocks: (53.7 GB/50.0 GiB)
[10354418.335716] sd 2:0:1:0: [sdb] Write Protect is off
[10354418.335719] sd 2:0:1:0: [sdb] Mode Sense: 61 00 00 00
[10354418.335777] sd 2:0:1:0: [sdb] Cache data unavailable
[10354418.335782] sd 2:0:1:0: [sdb] Assuming drive cache: write through
[10354418.346543] sd 2:0:1:0: [sdb] Attached SCSI disk

# lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda           8:0    0   200G  0 disk
├─sda1        8:1    0     1G  0 part /boot
└─sda2        8:2    0   199G  0 part
  ├─rl-root 253:0    0    70G  0 lvm  /
  ├─rl-swap 253:1    0   7.9G  0 lvm  [SWAP]
  └─rl-home 253:2    0 121.1G  0 lvm  /home
sdb           8:16   0    50G  0 disk
sr0          11:0    1  1024M  0 rom

 


새 물리볼륨(PV)생성

# pvcreate /dev/sdb
  Physical volume "/dev/sdb" successfully created.

 
 
 

기존 볼륨그룹(VG)에 추가

# vgdisplay
  --- Volume group ---
  VG Name               rl
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  4
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                3
  Open LV               3
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               <199.00 GiB
  PE Size               4.00 MiB
  Total PE              50943
  Alloc PE / Size       50943 / <199.00 GiB
  Free  PE / Size       0 / 0
  VG UUID               hTdtnH-Q7J0-WhQ1-RLZ5-QX5R-zXU5-cqBHQQ

# vgextend rl /dev/sdb
  Volume group "rl" successfully extended

# vgs
  VG #PV #LV #SN Attr   VSize   VFree
  rl   2   3   0 wz--n- 248.99g <50.00g

 

기존 논리볼륨(LV)확장

# lvs
  LV   VG Attr       LSize    Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  home rl -wi-ao---- <121.11g
  root rl -wi-ao----   70.00g
  swap rl -wi-ao----   <7.89g

# lvextend -l +100%FREE /dev/rl/home
  Size of logical volume rl/home changed from <121.11 GiB (31004 extents) to <171.11 GiB (43803 extents).
  Logical volume rl/home successfully resized.

# lvs
  LV   VG Attr       LSize    Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  home rl -wi-ao---- <171.11g
  root rl -wi-ao----   70.00g
  swap rl -wi-ao----   <7.89g

 
 

파일시스템(FS) 확장

# xfs_growfs /home
meta-data=/dev/mapper/rl-home    isize=512    agcount=4, agsize=7937024 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1    bigtime=0 inobtcount=0
data     =                       bsize=4096   blocks=31748096, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
log      =internal log           bsize=4096   blocks=15502, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 31748096 to 44854272

파일시스템일 ext4일 경우 아래처럼 확장

resize2fs /dev/mapper/rl-home

확인

# df -Th
Filesystem          Type      Size  Used Avail Use% Mounted on
devtmpfs            devtmpfs  7.7G     0  7.7G   0% /dev
tmpfs               tmpfs     7.7G     0  7.7G   0% /dev/shm
tmpfs               tmpfs     7.7G  161M  7.6G   3% /run
tmpfs               tmpfs     7.7G     0  7.7G   0% /sys/fs/cgroup
/dev/mapper/rl-root xfs        70G   11G   60G  15% /
/dev/sda1           xfs      1014M  341M  674M  34% /boot
/dev/mapper/rl-home xfs       172G  1.6G  170G   1% /home
overlay             overlay    70G   11G   60G  15% /var/lib/docker/overlay2/99233c81cfab6eee98070c0b073ad7a239ea16487bb5c2dfd74fd66c246adc2a/merged
overlay             overlay    70G   11G   60G  15% /var/lib/docker/overlay2/90b68a5d7af9961ddb0462ddbe1fba95893f5d788fa49637d786bc983c22b83d/merged
overlay             overlay    70G   11G   60G  15% /var/lib/docker/overlay2/4db21e18670fd1805a9cda8c9232429613ba55cd70502f9af6a2467913800258/merged
overlay             overlay    70G   11G   60G  15% /var/lib/docker/overlay2/9a6ccd35add59ac1f9cba03e933342fbf205419c7874bce3d80b14c401034168/merged
tmpfs               tmpfs     1.6G     0  1.6G   0% /run/user/0

더미파일로 실제 용량 테스트

# dd if=/dev/zero of=bigfile.img bs=1G count=160 status=progress
18253611008 bytes (18 GB, 17 GiB) copied, 145 s, 126 MB/s