내용 |
login as: root
root@192.168.192.129's password:
[root@master ~]# cd /dev
[root@master dev]# ls sd*
sda sda1 sda2 sdb sdb1 sdb2 sdc sdd sde sdf sdg sdh sdi sdj
[root@master dev]# ls -l sd*
brw-rw----. 1 root disk 8, 0 4월 23 16:31 sda
brw-rw----. 1 root disk 8, 1 4월 23 16:31 sda1
brw-rw----. 1 root disk 8, 2 4월 23 16:31 sda2
brw-rw----. 1 root disk 8, 16 4월 23 16:31 sdb
brw-rw----. 1 root disk 8, 17 4월 23 16:31 sdb1
brw-rw----. 1 root disk 8, 18 4월 23 16:31 sdb2
brw-rw----. 1 root disk 8, 32 4월 23 16:31 sdc
brw-rw----. 1 root disk 8, 48 4월 23 16:31 sdd
brw-rw----. 1 root disk 8, 64 4월 23 16:31 sde
brw-rw----. 1 root disk 8, 80 4월 23 16:31 sdf
brw-rw----. 1 root disk 8, 96 4월 23 16:31 sdg
brw-rw----. 1 root disk 8, 112 4월 23 16:31 sdh
brw-rw----. 1 root disk 8, 128 4월 23 16:31 sdi
brw-rw----. 1 root disk 8, 144 4월 23 16:31 sdj
[root@master dev]# fdisk 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.
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x38c2dab1.
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p):
Using default response p
Partition number (1-4, default 1):
First sector (2048-20971519, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-20971519, default 20971519):
Using default value 20971519
Partition 1 of type Linux and of size 10 GiB is set
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@master dev]# fdisk sdd
...
[root@master dev]# mdadm --create /dev/md/level10 --level=10 --raid-devices=8 /dev/sdc1 /dev/sdd1 /dev/sde1 /dev/sdf1 /dev/sdg1 /dev/sdh1 /dev/sdi1 /dev/sdj1
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md/level10 started.
[root@master dev]# mdadm --detail --scan
ARRAY /dev/md/root metadata=1.2 name=localhost:root UUID=fbab4caf:fbb5421d:2b8d7ab8:d13bace0
ARRAY /dev/md/swap metadata=1.2 name=localhost:swap UUID=9d201f44:ef074b7c:d3d222ae:defcce29
ARRAY /dev/md/level10 metadata=1.2 name=master:level10 UUID=11d4442c:90bae780:52c78fa8:494686d2
[root@master dev]# mdadm --detail /dev/md/level10
/dev/md/level10:
Version : 1.2
Creation Time : Mon Apr 23 16:41:11 2018
Raid Level : raid10
Array Size : 41906176 (39.96 GiB 42.91 GB)
Used Dev Size : 10476544 (9.99 GiB 10.73 GB)
Raid Devices : 8
Total Devices : 8
Persistence : Superblock is persistent
Update Time : Mon Apr 23 16:42:04 2018
State : clean, resyncing
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Layout : near=2
Chunk Size : 512K
Consistency Policy : resync
Resync Status : 25% complete
Name : master:level10 (local to host master)
UUID : 11d4442c:90bae780:52c78fa8:494686d2
Events : 4
Number Major Minor RaidDevice State
0 8 33 0 active sync set-A /dev/sdc1
1 8 49 1 active sync set-B /dev/sdd1
2 8 65 2 active sync set-A /dev/sde1
3 8 81 3 active sync set-B /dev/sdf1
4 8 97 4 active sync set-A /dev/sdg1
5 8 113 5 active sync set-B /dev/sdh1
6 8 129 6 active sync set-A /dev/sdi1
7 8 145 7 active sync set-B /dev/sdj1
[root@master dev]#
[root@master dev]# mkfs.ext4 /dev/md/level10
mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=128 blocks, Stripe width=512 blocks
2621440 inodes, 10476544 blocks
523827 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2157969408
320 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
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
[root@master dev]# mkdir /dfs
[root@master dev]# mount /dev/md/level10 /dfs
[root@master dev]# cd /dfs/
[root@master dfs]# cat > sample.txt
Hello
World
[root@master dfs]# cat sample.txt
Hello
World
[root@master dfs]#
[root@master dev]# vi /etc/fstab
#
# /etc/fstab
# Created by anaconda on Mon Apr 23 16:01:58 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
#
UUID=33e8629b-8196-49cf-b455-fdf8d1f069d4 / ext4 defaults 1 1
UUID=eea48463-c9e7-40d0-92a0-bda2f5b6fe82 swap swap defaults 0 0
/dev/md/level10 /dfs ext4 defaults 0 2
~
[root@master dfs]# init 6 |