[root@localhost /]# fdisk /dev/sd
sda sda1 sda2 sda3 sdb sdb1
[root@localhost /]# 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 0x34c1337c.
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): m
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
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): p
Disk /dev/sdb: 136.4 GB, 136365211648 bytes
255 heads, 63 sectors/track, 16578 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: 0x34c1337c
Device Boot Start End Blocks Id System
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-16578, default 1): 16578
Command (m for help): p
Disk /dev/sdb: 136.4 GB, 136365211648 bytes
255 heads, 63 sectors/track, 16578 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: 0x34c1337c
Device Boot Start End Blocks Id System
/dev/sdb1 16578 16578 8032+ 83 Linux
Partition 1 does not start on physical sector boundary.
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost /]# mkfs.ext4 /dev/sdb
sdb sdb1
[root@localhost /]# mkfs.ext4 /dev/sdb
sdb sdb1
[root@localhost /]# mkfs.ext4 /dev/sdb
sdb sdb1
[root@localhost /]# fdisk -l
Disk /dev/sda: 136.4 GB, 136365211648 bytes
255 heads, 63 sectors/track, 16578 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: 0x0008482b
Device Boot Start End Blocks Id System
/dev/sda1 * 1 26 204800 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 26 16057 128769024 83 Linux
/dev/sda3 16057 16579 4194304 82 Linux swap / Solaris
Disk /dev/sdb: 136.4 GB, 136365211648 bytes
255 heads, 63 sectors/track, 16578 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: 0x34c1337c
Device Boot Start End Blocks Id System
/dev/sdb1 16578 16578 8032+ 83 Linux
Partition 1 does not start on physical sector boundary.
[root@localhost /]# mkfs.ext4 /dev/sdb1
mke2fs 1.41.12 (17-May-2010)
/dev/sdb1 alignment is offset by 3584 bytes.
This may result in very poor performance, (re)-partitioning suggested.
Discarding device blocks: done
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
Stride=4 blocks, Stripe width=0 blocks
2008 inodes, 8032 blocks
401 blocks (4.99%) reserved for the super user
First data block=1
Maximum filesystem blocks=8388608
1 block group
8192 blocks per group, 8192 fragments per group
2008 inodes per group
Writing inode tables: done
Creating journal (1024 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 35 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
[root@localhost /]# tune2fs -c -1 -i 0 /dev/sdb1 (파일시스템 강제 체크하는 마운트 횟수 및 기간 설정 변경)
tune2fs 1.41.12 (17-May-2010)
Setting maximal mount count to -1
Setting interval between checks to 0 seconds
[root@localhost /]# mkdir -p /data2
[root@localhost /]# blkid (sdb1의 유니크한 ID(UUID) 확인)
/dev/sda3: UUID="b5755e1d-8cc8-471d-a5a4-a21cfe24afde" TYPE="ext4"
/dev/sdb1: UUID="2d3e8015-0704-48f1-9bd6-6124a17c3a53" TYPE="ext4"
/dev/sda1: UUID="000f715a-e4af-4a0a-9371-0f2fb51550ef" TYPE="ext4"
/dev/sda2: UUID="54f61ddb-9bb6-47a8-a3e9-4839c9ac1300" TYPE="swap"
/dev/sdb1: UUID="5acda3c5-830a-4141-b274-377b9542a73f" TYPE="ext4"
[root@localhost /]# vi /etc/fstab (fstab에 마운트 추가)
9 UUID=b5755e1d-8cc8-471d-a5a4-a21cfe24afde / ext4 defaults 1 1
10 UUID=000f715a-e4af-4a0a-9371-0f2fb51550ef /boot ext4 defaults 1 2
11 UUID=2d3e8015-0704-48f1-9bd6-6124a17c3a53 /data ext4 defaults 1 2
12 UUID=54f61ddb-9bb6-47a8-a3e9-4839c9ac1300 swap swap defaults 0 0
13 UUID=5acda3c5-830a-4141-b274-377b9542a73f /data2 ext4 defaults 0 0 (추가)
14 tmpfs /dev/shm tmpfs defaults 0 0
15 devpts /dev/pts devpts gid=5,mode=620 0 0
16 sysfs /sys sysfs defaults 0 0
17 proc /proc proc defaults 0 0
[root@dsmaref ~]# mount -a (자동마운트로 붙는지 확인)
[root@dsmaref ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 212G 51G 151G 26% /
tmpfs 16G 80K 16G 1% /dev/shm
/dev/sda1 190M 38M 142M 22% /boot
/dev/sdb1 11T 2.2T 8.1T 21% /data
/dev/sdb1 3.6T 68M 3.4T 1% /data2
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