如何在 CentOS Linux 上掛載一顆 etx3 格式的硬碟 ? 為何要掛載這顆硬碟 ? 主要是當備份碟每天零晨可以使用 crontab+shellscript 自動備份資料 , 當做普通重要資料還原用 , 沒錢買好的硬體RAID只好用這最省錢的方式。
1. 查看有哪些硬碟掛在機器上
# fdisk -l #除了系統主硬碟 hda 40G外我已經多放了 hdc 第二顆3G大小的硬碟
Disk /dev/hda: 41.1 GB, 41171288064 bytes
255 heads, 63 sectors/track, 5005 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 13 104391 83 Linux
/dev/hda2 14 5005 40098240 8e Linux LVM
Disk /dev/hdc: 3228 MB, 3228696576 bytes
128 heads, 63 sectors/track, 782 cylinders
Units = cylinders of 8064 * 512 = 4128768 bytes
Device Boot Start End Blocks Id System
/dev/hdc1 * 1 782 3152992+ b W95 FAT32
2. 硬碟 partition 規劃
# fdisk /dev/hdc #使用 fdisk 工具切割規劃 hdc 這顆硬碟
Command (m for help): d #刪除 hdc1 partition
Command (m for help): n #新增 hdc1 partition
Command action
e extended
p primary partition (1-4) p # 打入p規劃為 primary 格式
Partition number (1-4): 1 # 因為欲規劃為 hdc1 所以選擇編號1
First cylinder (1-782, default 1): # 開始的磁區default >> Enter
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-782, default 782): # 結束的磁區default >> Enter
Using default value 782
Command (m for help): w # 將剛剛的規劃 save
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
# fdisk -l # 再次查看
Disk /dev/hdc: 3228 MB, 3228696576 bytes
128 heads, 63 sectors/track, 782 cylinders
Units = cylinders of 8064 * 512 = 4128768 bytes
Device Boot Start End Blocks Id System
/dev/hdc1 1 782 3152992+ 83 Linux
3. Format 硬碟
# mkfs.ext3 /dev/hdc1 # 將 partition 格式化為 linux ext3 檔案系統格式
mke2fs 1.39 (29-May-2006)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
394400 inodes, 788248 blocks
39412 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=809500672
25 block groups
32768 blocks per group, 32768 fragments per group
15776 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912
Writing inode tables: done
Creating journal (16384 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 34 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
# mkdir /disk2 # 建立 disk2 掛載資料夾
# mount /disk2 # 手動掛載資料夾
# df # 查看 disk2 是否掛上
檔案系統 1K-區段 已用 可用 已用% 掛載點
/dev/mapper/VolGroup00-LogVol00
37803504 1830008 34022164 6% /
/dev/hda1 101086 18863 77004 20% /boot
tmpfs 257668 0 257668 0% /dev/shm
/dev/hdc1 3103444 70240 2875556 3% /disk2
# umount /disk2 # 卸載 disk2
# vi /etc/fstab # 加入開機自動掛載 hdc1
/dev/hdc1 /disk2 ext3 defaults 1 1
2010/03/16
[ LOS ] CentOS Linux Format/Mount Etx3 Partition
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