kt 클라우드에서 디스크 연결후 디스크 마운트 하기(이렇게 추가하면 디스크를 라이브로 확장할 수가 없다)
# fdisk -l
# mkfs.ext4 /dev/xvdb
# mkdir /data
# mount /dev/xvdb /data
# df -TH
# vi /etc/fstab
/dev/xvdb /data ext4 defaults,nofail 0 0
#기본적인 LVM구성
https://manual.cloud.kt.com/kt/compute-server-disk
#VG에 추가하기
https://closed0402.tistory.com/103
pvcreate /dev/xvdf1
vgextend fnsDB1_VG /dev/xvdf1
vgdisplay
# LV 확장
https://jangpd007.tistory.com/235
lvextend -L +500G /dev/fnsDB3_VG/fnsDB3_LG
lvscan
resize2fs /dev/fnsDB3_VG/fnsDB3_LG
# Xfs_growfs
https://blog.seabow.pe.kr/?p=2176
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