[CentOS7] LVM /home 크기 대신 /root 크기 늘리기
2018. 9. 18. 10:49
[CentOS7] LVM /home 크기 대신 /(root) 크기 늘리기
서버 구성시 /home 영역이 필요 없는데 기본 값으로 설정했을 경우 /home 대신 /(root) 크기를 늘려줘야 하는 경우가 있다.
이럴 경우 /home LVM을 삭제하고 /(root) LVM을 늘린 후 적용하는 방법이다.
1. 우선 현재 mount 되어 있는 영역을 확인한다.
1 2 3 4 5 6 7 8 9 10 11 12 13 | # df -Th Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/centos-root xfs 50G 9.4G 45G 18% / devtmpfs devtmpfs 17G 0 17G 0% /dev tmpfs tmpfs 17G 0 17G 0% /dev/shm tmpfs tmpfs 17G 18M 17G 1% /run tmpfs tmpfs 17G 0 17G 0% /sys/fs/cgroup /dev/sda1 xfs 1.1G 136M 928M 13% /boot /dev/mapper/centos-home xfs 57G 34M 62G 1% /home cm_processes tmpfs 17G 14M 17G 1% /run/cloudera-scm-agent/process tmpfs tmpfs 3.4G 0 3.4G 0% /run/user/0 | cs |
/(root) 영역이 50G /home 영역이 57G 잡혀있는 것을 확인할 수 있다.
2. /home을 우선 umount 해주고 /etc/fstab 에서도 삭제해준다.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | # umount /home # vi /etc/fstab # # /etc/fstab # Created by anaconda on Mon Sep 10 11:02:54 2018 # # 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/mapper/centos-root / xfs defaults 0 0 UUID=d50a11eb-5415-496e-9099-4d7fa5173408 /boot xfs defaults 0 0 #/dev/mapper/centos-home /home xfs defaults 0 0 /dev/mapper/centos-swap swap swap defaults 0 0 | cs |
3. lv 정보를 확인한다.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | # lvdisplay --- Logical volume --- LV Path /dev/centos/swap LV Name swap VG Name centos LV UUID 3uTBf4-lG69-dVOC-hpQw-QQiD-TSNk-Ft6wR8 LV Write Access read/write LV Creation host, time cloudera00.bigdata.com, 2018-09-10 11:02:34 +0900 LV Status available # open 2 LV Size 12.00 GiB Current LE 3072 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:1 --- Logical volume --- LV Path /dev/centos/home LV Name home VG Name centos LV UUID GmbVNR-Vy5E-oLhn-WVr9-Piwr-X2k4-nVv0cR LV Write Access read/write LV Creation host, time cloudera00.bigdata.com, 2018-09-10 11:02:34 +0900 LV Status available # open 0 LV Size <57.00 GiB Current LE 14591 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:2 --- Logical volume --- LV Path /dev/centos/root LV Name root VG Name centos LV UUID UqiU4M-hZfa-yNb1-n6X5-2FpC-GzUH-rorXVE LV Write Access read/write LV Creation host, time cloudera00.bigdata.com, 2018-09-10 11:02:44 +0900 LV Status available # open 1 LV Size 50.00 GiB Current LE 12800 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 | cs |
4. /dev/centos/home 을 삭제해준다.
1 2 3 | # lvremove /dev/centos/home Do you really want to remove active logical volume centos/home? [y/n]: y Logical volume "home" successfully removed | cs |
5. lv 삭제를 확인한다.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | # lvdisplay --- Logical volume --- LV Path /dev/centos/swap LV Name swap VG Name centos LV UUID 3uTBf4-lG69-dVOC-hpQw-QQiD-TSNk-Ft6wR8 LV Write Access read/write LV Creation host, time cloudera00.bigdata.com, 2018-09-10 11:02:34 +0900 LV Status available # open 2 LV Size 12.00 GiB Current LE 3072 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:1 --- Logical volume --- LV Path /dev/centos/root LV Name root VG Name centos LV UUID UqiU4M-hZfa-yNb1-n6X5-2FpC-GzUH-rorXVE LV Write Access read/write LV Creation host, time cloudera00.bigdata.com, 2018-09-10 11:02:44 +0900 LV Status available # open 1 LV Size 50.00 GiB Current LE 12800 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 | cs |
6. /home을 삭제하여 늘어난 사이즈만큼 /(root)를 늘려준다.
1 2 3 4 | # lvextend -L +54G /dev/centos/root Size of logical volume centos/root changed from 50.00 GiB (12800 extents) to 104.00 GiB (26624 extents). Logical volume centos/root successfully resized. | cs |
7. /(root) 영역이 늘어난 것을 확인한다.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | # lvdisplay --- Logical volume --- LV Path /dev/centos/swap LV Name swap VG Name centos LV UUID 3uTBf4-lG69-dVOC-hpQw-QQiD-TSNk-Ft6wR8 LV Write Access read/write LV Creation host, time cloudera00.bigdata.com, 2018-09-10 11:02:34 +0900 LV Status available # open 2 LV Size 12.00 GiB Current LE 3072 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:1 --- Logical volume --- LV Path /dev/centos/root LV Name root VG Name centos LV UUID UqiU4M-hZfa-yNb1-n6X5-2FpC-GzUH-rorXVE LV Write Access read/write LV Creation host, time cloudera00.bigdata.com, 2018-09-10 11:02:44 +0900 LV Status available # open 1 LV Size 104.00 GiB Current LE 26624 Segments 2 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 | cs |
8. 변경된 파일 시스템을 적용해준다. ( 이 작업을 해주어야 실제로 반영됨.)
1 2 3 4 5 6 7 8 9 10 11 12 | # 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 27262976 | cs |
9. 잘 적용되었는지 확인해 준다.
1 2 3 4 5 6 7 8 9 10 11 | # df -Th Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/centos-root xfs 104G 8.8G 96G 9% / devtmpfs devtmpfs 16G 0 16G 0% /dev tmpfs tmpfs 16G 0 16G 0% /dev/shm tmpfs tmpfs 16G 17M 16G 1% /run tmpfs tmpfs 16G 0 16G 0% /sys/fs/cgroup /dev/sda1 xfs 1014M 130M 885M 13% /boot cm_processes tmpfs 16G 25M 16G 1% /run/cloudera-scm-agent/process tmpfs tmpfs 3.2G 0 3.2G 0% /run/user/0 | cs |
☞ 이 글이 도움이 되셨다면 광고 클릭을 부탁드립니다 :) ☜
