LVM 생성하기 (남은 용량 다 사용하기 -L 100%FREE)

안녕하세요!

오늘은 LVM 생성하기 대하여 알아보겠습니다.

 

 

LVM 생성하기

 

fdisk -l, lsblk 명령어를 사용하여 블록 스토리지를 확인합니다.

 

 

 

PV 생성 및 확인

 

 

[root@localhost ~]# pvcreate /dev/sdc Physical volume "/dev/sdc" successfully created [root@localhost ~]# pvdisplay   "/dev/sdc" is a new physical volume of "10.00 GiB"   --- NEW Physical volume ---   PV Name               /dev/sdc   VG Name   PV Size               10.00 GiB   Allocatable           NO   PE Size               0   Total PE              0   Free PE               0   Allocated PE          0   PV UUID               zw9P22-THJn-Kvz7-mewA-zK8B-WFzE-nJFVss

 

 

 

VG 생성 및 확인

[root@localhost ~]# vgcreate testvg /dev/sdc Volume group "testvg" successfully created [root@localhost ~]# vgdisplay   --- Volume group ---   VG Name               testvg   System ID   Format                lvm2   Metadata Areas        1   Metadata Sequence No  1   VG Access             read/write   VG Status             resizable   MAX LV                0   Cur LV                0   Open LV               0   Max PV                0   Cur PV                1   Act PV                1   VG Size               <10.00 GiB   PE Size               4.00 MiB   Total PE              2559   Alloc PE / Size       0 / 0   Free  PE / Size       2559 / <10.00 GiB   VG UUID               NNccj2-tz9M-YyuY-xz3U-dYo2-Kcwg-suoLbq

 

 

 

 

LV 생성 및 확인

[root@localhost ~]# lvcreate -n testlv -l 100%FREE testvg   Logical volume "testlv" created. [root@localhost ~]# lvdisplay   --- Logical volume ---   LV Path                /dev/testvg/testlv   LV Name                testlv   VG Name                testvg   LV UUID                cSBcDM-T6q9-mQHr-Db5h-yrRy-tNvR-saR47P   LV Write Access        read/write   LV Creation host, time localhost.localdomain, 2024-01-16 04:52:09 -0800   LV Status              available   # open                 0   LV Size                <10.00 GiB   Current LE             2559   Segments               1   Allocation             inherit   Read ahead sectors     auto   - currently set to     8192   Block device           253:0

10G를 할당하기 위해 lvcreate -n mylv -L 10G myvg 명령어를 사용했지만 Volume group "testvg" has insufficient free space (2559 extents): 2560 required. 필요 공간이 부족하여 LV 생성이 불가합니다. 잔여 용량을 전부 사용하기 위해 -l 100%FREE를 사용하였습니다.

[root@localhost ~]# lvcreate -n testlv -L 10G testvg   Volume group "testvg" has insufficient free space (2559 extents): 2560 required. [root@localhost ~]# lvcreate -n testlv -l 100%FREE testvg   Logical volume "testlv" created.

 

 

 

파일 시스템 생성 및 마운트 

 

 

[root@localhost ~]# mkfs.ext4 /dev/testvg/testlv mke2fs 1.42.9 (28-Dec-2013) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 655360 inodes, 2620416 blocks 131020 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=2151677952 80 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks:         32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done

 

 

 

마운트 및 fstab 등록

 

[root@localhost ~]# mkdir /test-lvm [root@localhost ~]# mount /dev/testvg/testlv /test-lvm [root@localhost ~]# lsblk

[root@localhost ~]# vi /etc/fstab # /etc/fstab # Created by anaconda on Mon Jan  8 08:14:21 2024 # Accessible filesystems, by reference, are maintained under '/dev/disk' # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info /dev/testvg/testlv      /test-lvm               ext4    defaults        0 0

 

확인

 

이상입니다.

감사합니다!