|
-- xfs는 확장은되지만 축소는 되지 않는 파일시스템
-- xfs 확장
# xfs_growfs /마운트포인트
-- ext4 확장
# resize2fs [디바이스명] 100M
# fsadm -e -y resize /dev/datavol/database 500M
1. 파티션 생성
1) 디스크 디바이스 확인
[TEST-root] rh70:/root#lsscsi
[0:0:0:0] disk VMware Virtual disk 1.0 /dev/sda
[0:0:1:0] disk VMware Virtual disk 1.0 /dev/sdb
[0:0:2:0] disk VMware Virtual disk 1.0 /dev/sdc
[2:0:0:0] cd/dvd NECVMWar VMware IDE CDR10 1.00 /dev/sr0
2) 파티션 정보확인
[TEST-root] rh70:/root#fdisk -l /dev/sdc
Disk /dev/sdc: 2147 MB, 2147483648 bytes, 4194304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x83695c0d
Device Boot Start End Blocks Id System
3) 파티션 생성
[TEST-root] rh70:/root#fdisk /dev/sdc
Welcome to fdisk (util-linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): m
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
g create a new empty GPT partition table
G create an IRIX (SGI) partition table
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p): p
Partition number (1-4, default 1):
First sector (2048-4194303, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-4194303, default 4194303): +1024M
Partition 1 of type Linux and of size 1 GiB is set
Command (m for help): t
Selected partition 1
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): n
Partition type:
p primary (1 primary, 0 extended, 3 free)
e extended
Select (default p): p
Partition number (2-4, default 2):
First sector (2099200-4194303, default 2099200):
Using default value 2099200
Last sector, +sectors or +size{K,M,G} (2099200-4194303, default 4194303):
Using default value 4194303
Partition 2 of type Linux and of size 1023 MiB is set
Command (m for help): t
Partition number (1,2, default 2): 2
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
4)파티션 테이블 반영
[TEST-root] rh70:/root#partprobe
5) 파티션 정보보기
[TEST-root] rh70:/root#fdisk -l /dev/sdc
Disk /dev/sdc: 2147 MB, 2147483648 bytes, 4194304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x83695c0d
Device Boot Start End Blocks Id System
/dev/sdc1 2048 2099199 1048576 8e Linux LVM
/dev/sdc2 2099200 4194303 1047552 8e Linux LVM
[TEST-root] rh70:/root#
2. PV생성
[TEST-root] rh70:/root#pvcreate /dev/sdc1 /dev/sdc2
Physical volume "/dev/sdc1" successfully created
Physical volume "/dev/sdc2" successfully created
3. VG 생성
[TEST-root] rh70:/root#vgcreate -s 4 uservg /dev/sdc1
Volume group "uservg" successfully created
[TEST-root] rh70:/root#vgs
VG #PV #LV #SN Attr VSize VFree
rhel 2 2 0 wz--n- 49.50g 6.00g
uservg 1 0 0 wz--n- 1020.00m 1020.00m
[TEST-root] rh70:/root#vgdisplay uservg
--- Volume group ---
VG Name uservg
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 1020.00 MiB
PE Size 4.00 MiB
Total PE 255
Alloc PE / Size 0 / 0
Free PE / Size 255 / 1020.00 MiB
VG UUID 6btSlf-kaQv-F10J-EOnn-OkDe-0epn-e9bbf8
4. LV생성
[TEST-root] rh70:/root#lvcreate -l 100 -n userlv uservg
WARNING: ext4 signature detected on /dev/uservg/userlv at offset 1080. Wipe it? [y/n] y
Wiping ext4 signature on /dev/uservg/userlv.
Logical volume "userlv" created
[TEST-root] rh70:/root#lvdisplay uservg
--- Logical volume ---
LV Path /dev/uservg/userlv
LV Name userlv
VG Name uservg
LV UUID IarT1r-6chm-feoC-DLd6-64Jv-2Qcz-tDudEn
LV Write Access read/write
LV Creation host, time rh70, 2015-02-13 13:45:11 +0900
LV Status available
# open 0
LV Size 400.00 MiB
Current LE 100
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:2
[TEST-root] rh70:/root#vgdisplay uservg
--- Volume group ---
VG Name uservg
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 1020.00 MiB
PE Size 4.00 MiB
Total PE 255
Alloc PE / Size 100 / 400.00 MiB
Free PE / Size 155 / 620.00 MiB
VG UUID 6btSlf-kaQv-F10J-EOnn-OkDe-0epn-e9bbf8
5. FS생성(XFS) 및 마운트
[TEST-root] rh70:/root#mkfs -t xfs /dev/mapper/uservg-userlv
meta-data=/dev/mapper/uservg-userlv isize=256 agcount=4, agsize=25600 blks
= sectsz=512 attr=2, projid32bit=1
= crc=0
data = bsize=4096 blocks=102400, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal log bsize=4096 blocks=853, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
[TEST-root] rh70:/root#
[TEST-root] rh70:/root#vi /etc/fstab
[TEST-root] rh70:/root#
[TEST-root] rh70:/root#cat /etc/fstab | grep uservg
/dev/mapper/uservg-userlv /database xfs defaults 1 2
[TEST-root] rh70:/root#mount -a
[TEST-root] rh70:/root#df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel-root 40G 7.8G 32G 20% /
devtmpfs 1.9G 0 1.9G 0% /dev
tmpfs 1.9G 80K 1.9G 1% /dev/shm
tmpfs 1.9G 8.8M 1.9G 1% /run
tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup
/dev/sda1 497M 119M 379M 24% /boot
/dev/mapper/uservg-userlv 397M 21M 377M 6% /database
6. FS확장하기
1) LV확장
[TEST-root] rh70:/root#lvextend -l +155 /dev/uservg/userlv
Extending logical volume userlv to 1020.00 MiB
Logical volume userlv successfully resized
2) VG정보 확인
[TEST-root] rh70:/root#vgdisplay uservg
--- Volume group ---
VG Name uservg
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 1020.00 MiB
PE Size 4.00 MiB
Total PE 255
Alloc PE / Size 255 / 1020.00 MiB
Free PE / Size 0 / 0
VG UUID 6btSlf-kaQv-F10J-EOnn-OkDe-0epn-e9bbf8
3) FS확장
[TEST-root] rh70:/root#df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel-root 40G 7.8G 32G 20% /
devtmpfs 1.9G 0 1.9G 0% /dev
tmpfs 1.9G 80K 1.9G 1% /dev/shm
tmpfs 1.9G 8.8M 1.9G 1% /run
tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup
/dev/sda1 497M 119M 379M 24% /boot
/dev/mapper/uservg-userlv 397M 21M 377M 6% /database
[TEST-root] rh70:/root#xfs_growfs /database
meta-data=/dev/mapper/uservg-userlv isize=256 agcount=4, agsize=25600 blks
= sectsz=512 attr=2, projid32bit=1
= crc=0
data = bsize=4096 blocks=102400, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal bsize=4096 blocks=853, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 102400 to 261120
[TEST-root] rh70:/root#df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel-root 40G 7.8G 32G 20% /
devtmpfs 1.9G 0 1.9G 0% /dev
tmpfs 1.9G 80K 1.9G 1% /dev/shm
tmpfs 1.9G 8.8M 1.9G 1% /run
tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup
/dev/sda1 497M 119M 379M 24% /boot
/dev/mapper/uservg-userlv 1017M 21M 997M 3% /database
7. VG확장하기
[TEST-root] rh70:/root# vgdisplay uservg
--- Volume group ---
VG Name uservg
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 1020.00 MiB
PE Size 4.00 MiB
Total PE 255
Alloc PE / Size 255 / 1020.00 MiB
Free PE / Size 0 / 0
VG UUID 6btSlf-kaQv-F10J-EOnn-OkDe-0epn-e9bbf8
[TEST-root] rh70:/root#vgextend uservg /dev/sdc2
Volume group "uservg" successfully extended
[TEST-root] rh70:/root#vgdisplay uservg
--- Volume group ---
VG Name uservg
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 2
Act PV 2
VG Size 1.99 GiB
PE Size 4.00 MiB
Total PE 510
Alloc PE / Size 255 / 1020.00 MiB
Free PE / Size 255 / 1020.00 MiB
VG UUID 6btSlf-kaQv-F10J-EOnn-OkDe-0epn-e9bbf8
8. LV, FS 재확장
1) LV 확장
[TEST-root] rh70:/root#lvextend -l +100%FREE /dev/uservg/userlv
Extending logical volume userlv to 1.99 GiB
Logical volume userlv successfully resized
[TEST-root] rh70:/root#lvdisplay uservg
--- Logical volume ---
LV Path /dev/uservg/userlv
LV Name userlv
VG Name uservg
LV UUID IarT1r-6chm-feoC-DLd6-64Jv-2Qcz-tDudEn
LV Write Access read/write
LV Creation host, time rh70, 2015-02-13 13:45:11 +0900
LV Status available
# open 1
LV Size 1.99 GiB
Current LE 510
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:2
2) FS확장 (fsadm 명령사용)
[TEST-root] rh70:/root#df -h | grep database
/dev/mapper/uservg-userlv 1017M 21M 997M 3% /database
[TEST-root] rh70:/root# fsadm -e -y resize /dev/uservg/userlv
meta-data=/dev/mapper/uservg-userlv isize=256 agcount=11, agsize=25600 blks
= sectsz=512 attr=2, projid32bit=1
= crc=0
data = bsize=4096 blocks=261120, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal bsize=4096 blocks=853, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 261120 to 522240
[TEST-root] rh70:/root#df -h | grep database
/dev/mapper/uservg-userlv 2.0G 21M 2.0G 2% /database
9. FS축소 하기
1) FS 재생성 -> xfs는 축소가안됨
[TEST-root] rh70:/root#mkfs -t ext4 /dev/uservg/userlv
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
130560 inodes, 522240 blocks
26112 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=534773760
16 block groups
32768 blocks per group, 32768 fragments per group
8160 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912
Allocating group tables: done
Writing inode tables: done
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done
2) FS축소
[TEST-root] rh70:/root#e2fsck -f /dev/uservg/userlv
e2fsck 1.42.9 (28-Dec-2013)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/uservg/userlv: 11/130560 files (0.0% non-contiguous), 17926/522240 blocks
[TEST-root] rh70:/root#resize2fs /dev/uservg/userlv 100M
resize2fs 1.42.9 (28-Dec-2013)
Resizing the filesystem on /dev/uservg/userlv to 25600 (4k) blocks.
The filesystem on /dev/uservg/userlv is now 25600 blocks long.
[TEST-root] rh70:/root#mount -a
[TEST-root] rh70:/root#df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel-root 40G 7.8G 32G 20% /
devtmpfs 1.9G 0 1.9G 0% /dev
tmpfs 1.9G 80K 1.9G 1% /dev/shm
tmpfs 1.9G 8.8M 1.9G 1% /run
tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup
/dev/sda1 497M 119M 379M 24% /boot
/dev/mapper/uservg-userlv 66M 1.1M 58M 2% /database
3) LV축소
[TEST-root] rh70:/root#lvreduce -L 100M /dev/uservg/userlv
WARNING: Reducing active and open logical volume to 100.00 MiB
THIS MAY DESTROY YOUR DATA (filesystem etc.)
Do you really want to reduce userlv? [y/n]: y
Reducing logical volume userlv to 100.00 MiB
Logical volume userlv successfully resized
[TEST-root] rh70:/root#lvdisplay uservg
--- Logical volume ---
LV Path /dev/uservg/userlv
LV Name userlv
VG Name uservg
LV UUID IarT1r-6chm-feoC-DLd6-64Jv-2Qcz-tDudEn
LV Write Access read/write
LV Creation host, time rh70, 2015-02-13 13:45:11 +0900
LV Status available
# open 1
LV Size 100.00 MiB
Current LE 25
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:2
4) VG축소
[TEST-root] rh70:/root#pvmove /dev/sdc2 /dev/sdc1
No data to move for uservg
[TEST-root] rh70:/root#vgreduce uservg /dev/sdc2
Removed "/dev/sdc2" from volume group "uservg"
[TEST-root] rh70:/root#vgdisplay uservg
--- Volume group ---
VG Name uservg
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 11
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 1020.00 MiB
PE Size 4.00 MiB
Total PE 255
Alloc PE / Size 25 / 100.00 MiB
Free PE / Size 230 / 920.00 MiB
VG UUID 6btSlf-kaQv-F10J-EOnn-OkDe-0epn-e9bbf8
10. VG삭제
[TEST-root] rh70:/root#lvremove /dev/uservg/userlv
Do you really want to remove active logical volume userlv? [y/n]: y
Logical volume "userlv" successfully removed
[TEST-root] rh70:/root#vgremove uservg
Volume group "uservg" successfully removed
[TEST-root] rh70:/root#
[TEST-root] rh70:/root#lvs
LV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convert
root rhel -wi-ao---- 39.62g
swap rhel -wi-ao---- 3.89g
[TEST-root] rh70:/root#pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 rhel lvm2 a-- 39.51g 0
/dev/sdb rhel lvm2 a-- 10.00g 6.00g
/dev/sdc1 lvm2 a-- 1.00g 1.00g
/dev/sdc2 lvm2 a-- 1023.00m 1023.00m |
댓글