コレガのDAS CG-HDC4EU3500 をLinuxで認識させましょう [CG-HDC4EU3500]
ものはこちらで、
Corega 4BAY RAID eSATA/USB2.0 SATA3.5インチHDDケース CG-HDC4EU3500
- 出版社/メーカー: コレガ
- メディア: エレクトロニクス
RAID5構成では、使える容量が6TB
RAID10構成では、使える容量が4TB
となります。
# ちなみに、CG-HDC4EU3500 の設定などは、説明書の通りです。
# 難しくありませんが、「背面のRAID設定ボタン」は長押ししましょう。(笑)
いずれも2TBを超えますので、fdiskではパーティションを作れません。
そこで、partedを使って、パーティションを作成します。
# parted /dev/sda
GNU Parted 1.8.8.1.159-1e0e
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print
Error: /dev/sda: unrecognised disk label
おっと、なにか怒られています。
ラベルを書き込みましょう。
(parted) mklabel gpt
(parted) print
Model: ATA eSATA-2 External (scsi)
Disk /dev/sda: 4001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Number Start End Size File system Name Flags
これでOKです♪
(parted) mkpart
Partition name? []? ←空欄でOK
File system type? [ext2]? ←空欄でOK
Start? 0
End? 4001GB
(parted) print
Model: ATA eSATA-2 External (scsi)
Disk /dev/sda: 4001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Number Start End Size File system Name Flags
1 17.4kB 4001GB 4001GB
(parted) quit
これだけです
つぎはext4でフォーマットします。
# mkfs.ext4 -m 1 /dev/sda1
mke2fs 1.41.9 (22-Aug-2009)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
244187136 inodes, 976732283 blocks
9767322 blocks (1.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=0
29808 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, 512000000, 550731776, 644972544
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 20 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
ちなみに、「-m 1」というオプションは、スーパーユーザー用にリザーブする
領域サイズの指定を行うオプションです。
デフォルトでは5%になっており、4TBの5%って200GBです。
な、なにする用ですか(^^;)?
によれば、断片化を防ぐ効能もあるとか。。
う〜ん、それでも1%にしておきましょう。
あとはマウントするだけです (^_^)
その際、UUIDが必要となります。
「vol_id」なるコマンドもあるようですが、どうも覚えられません。
が、
/dev/disk/by-uuid
に認識済みのディスクのUUIDが格納されていますので、いつもここを参照します。
# ls -la /dev/disk/by-uuid
lrwxrwxrwx 1 root root 9 2010-02-14 01:12 0e142fd4-c6c4-43b9-8520-91adeb1cc432 -> ../../md1
lrwxrwxrwx 1 root root 10 2010-02-14 01:50 be4eabea-9f3c-4f7e-8119-08afee3eacd6 -> ../../sda1
lrwxrwxrwx 1 root root 9 2010-02-14 01:12 c18eb71f-5c65-4eea-829d-34678875ec36 -> ../../md0
リンク先までわかり、便利です。
#vi /etc/fstab
で
UUID=be4eabea-9f3c-4f7e-8119-08afee3eacd6 /st1 ext4 relatime 0 0
を追記します。
これでマウントしましょう〜♪
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