1.추가된 디스크 확인 (sdb가 추가 디스크임)
# ls -l /dev | grep "^brw" | grep " [hs]d"
brw-rw----. 1 root disk 8, 0 Sep 5 11:27 sda
brw-rw----. 1 root disk 8, 1 Sep 5 11:27 sda1
brw-rw----. 1 root disk 8, 2 Sep 5 11:27 sda2
brw-rw----. 1 root disk 8, 16 Sep 5 11:27 sdb
2. 파티션 생성
# fdisk -l /dev/sdb
Disk /dev/sdb: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x698cd53a.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-2610, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-2610, default 2610):
Using default value 2610
Command (m for help): t
Selected partition 1
Hex code (type L to list codes): 8e
Changed system type of partition 1 to 8e (Linux LVM)
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
# fdisk -l /dev/sdb
Disk /dev/sdb: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x698cd53a
Device Boot Start End Blocks Id System
/dev/sdb1 1 2610 20964793+ 8e Linux LVM
3. Physical volume 생성
# pvcreate /dev/sdb1
Physical volume "/dev/sdb1" successfully created
4. Volume 확인
# vgscan
Reading all physical volumes. This may take a while...
Found volume group "VolGroup" using metadata type lvm2
5. Logical Volume 확인
# lvscan
ACTIVE '/dev/VolGroup/lv_root' [8.54 GiB] inherit
ACTIVE '/dev/VolGroup/lv_swap' [992.00 MiB] inherit
6. Physical volume 확인
# pvscan
PV /dev/sda2 VG VolGroup lvm2 [9.51 GiB / 0 free]
PV /dev/sdb1 lvm2 [19.99 GiB]
Total: 2 [29.50 GiB] / in use: 1 [9.51 GiB] / in no VG: 1 [19.99 GiB]
7. Volume 신규 생성
# vgcreate VolData /dev/sdb1
Volume group "VolData" successfully created
8. Logical Volume 추가 (15GB)
# lvcreate -L 15G -n lv_data VolData
Logical volume "lv_data" created
# lvscan
ACTIVE '/dev/VolData/lv_data' [15.00 GiB] inherit
ACTIVE '/dev/VolGroup/lv_root' [8.54 GiB] inherit
ACTIVE '/dev/VolGroup/lv_swap' [992.00 MiB] inherit
9. 파일시스템 생성 (ext4)
# mkfs.ext4 /dev/VolData/lv_data
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
983040 inodes, 3932160 blocks
196608 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4026531840
120 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, 2654208
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 31 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
10. mount 정보 추가
* /etc/fstab 에 아래 한줄 추가
/dev/mapper/VolData-lv_data /opt ext4 defaults 1 1
# mount -a
# df -k
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root
8813300 1558824 6806784 19% /
tmpfs 771484 0 771484 0% /dev/shm
/dev/sda1 495844 97423 372821 21% /boot
/dev/mapper/VolData-lv_data
15481840 169456 14525952 2% /opt
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