CentOS 하드디스크 추가시 마운트하기
기존 하드디스크 이외에 하나더 추가할 경우 포맷하고 마운트를 하여야 합니다.
먼저 fdisk -l 로 Disk 정보를 확인합니다.
[root@vps ~]# fdisk -l
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
...
Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
/dev/sdb 로 확인되었습니다.
이제 파티션을 잡아야 합니다.
[root@vps ~]# 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 0xbf2eadcc.
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)
The device presents a logical sector size that is smaller than
the physical sector size. Aligning to a physical sector (or optimal
I/O) size boundary is recommended, or performance may be impacted.
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 (1-121601, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-121601, default 121601):
Using default value 121601
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
굵은파란색을 보시면 됩니다.
파티션을 잡은 뒤에는 포맷을 합니다.
[root@vps ~]# mkfs.ext4 /dev/sdb1
mke2fs 1.41.12 (17-May-2010)
/dev/sdb1 alignment is offset by 512 bytes.
This may result in very poor performance, (re)-partitioning suggested.
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=1 blocks, Stripe width=0 blocks
61054976 inodes, 244190000 blocks
12209500 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
7453 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,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 30 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
시간이 조금 걸립니다.
이제 마운트를 하면 됩니다.
uuid 로 마운트를 해볼까요~
[root@vps ~]# blkid /dev/sdb1
/dev/sdb1: UUID="5a76eec0-4b80-d3c4-9de4-302bffcc898c" TYPE="ext4"
UUID 를 복사해서 /etc/fstab 에 아래 처럼 추가합니다.
UUID=5a76eec0-4b80-d3c4-9de4-302bffcc898c /hdd2 ext4 defaults 1 1
/hdd2 는 미리 만들어 주어야 합니다. (mkdir /hdd2)
# mount -a 로 마운트 하면 됩니다.
# df -h 로 제대로 마운트 되었는지 확인합니다.