關於mdadm - Linux

By Hardy
at 2011-09-27T01:17
at 2011-09-27T01:17
Table of Contents
大家好:
最近在學Raid,實驗過程中發生了一個問題,
首先我建立了一個Raid5裝置,內容有5個10GB的分區,
root@ubuntu:~# mdadm --detail /dev/md0
Active Devices : 5
Working Devices : 5
Failed Devices : 0
Spare Devices : 0
Number Major Minor RaidDevice State
0 8 5 0 active sync /dev/sda5
1 8 6 1 active sync /dev/sda6
2 8 7 2 active sync /dev/sda7
3 8 8 3 active sync /dev/sda8
4 8 9 4 active sync /dev/sda9
root@ubuntu:~# df -h
/dev/md0 37G 176M 37G 1% /home
然後,我希望在不重製/dev/md0的情況下,新增兩個容量一樣的裝置,
爬了Google,找到下面兩段指令,
mdadm /dev/md0 -a /dev/sda11 /dev/sda10
mdadm /dev/md0 --grow --raid-disks=7
執行完,沒有錯誤訊息,再看一次mdadm --detail /dev/md0,
Active Devices : 7
Working Devices : 7
Failed Devices : 0
Spare Devices : 0
Number Major Minor RaidDevice State
0 8 5 0 active sync /dev/sda5
1 8 6 1 active sync /dev/sda6
2 8 7 2 active sync /dev/sda7
3 8 8 3 active sync /dev/sda8
4 8 9 4 active sync /dev/sda9
5 8 10 5 active sync /dev/sda10
6 8 11 6 active sync /dev/sda11
感覺上,的確都正常了,可是我打df -h,卻還是看到這樣的結果,
/dev/md0 37G 176M 37G 1% /home
Google好像說要「更改FileSystem的大小」,
想請問要下什麼指令才能讓磁碟空間變正常呢?
感恩大家!
--
靜思語分享:一切苦,源自慾念。
帝瑋 感恩合十
----------------------------------------------------
--
最近在學Raid,實驗過程中發生了一個問題,
首先我建立了一個Raid5裝置,內容有5個10GB的分區,
root@ubuntu:~# mdadm --detail /dev/md0
Active Devices : 5
Working Devices : 5
Failed Devices : 0
Spare Devices : 0
Number Major Minor RaidDevice State
0 8 5 0 active sync /dev/sda5
1 8 6 1 active sync /dev/sda6
2 8 7 2 active sync /dev/sda7
3 8 8 3 active sync /dev/sda8
4 8 9 4 active sync /dev/sda9
root@ubuntu:~# df -h
/dev/md0 37G 176M 37G 1% /home
然後,我希望在不重製/dev/md0的情況下,新增兩個容量一樣的裝置,
爬了Google,找到下面兩段指令,
mdadm /dev/md0 -a /dev/sda11 /dev/sda10
mdadm /dev/md0 --grow --raid-disks=7
執行完,沒有錯誤訊息,再看一次mdadm --detail /dev/md0,
Active Devices : 7
Working Devices : 7
Failed Devices : 0
Spare Devices : 0
Number Major Minor RaidDevice State
0 8 5 0 active sync /dev/sda5
1 8 6 1 active sync /dev/sda6
2 8 7 2 active sync /dev/sda7
3 8 8 3 active sync /dev/sda8
4 8 9 4 active sync /dev/sda9
5 8 10 5 active sync /dev/sda10
6 8 11 6 active sync /dev/sda11
感覺上,的確都正常了,可是我打df -h,卻還是看到這樣的結果,
/dev/md0 37G 176M 37G 1% /home
Google好像說要「更改FileSystem的大小」,
想請問要下什麼指令才能讓磁碟空間變正常呢?
感恩大家!
--
靜思語分享:一切苦,源自慾念。
帝瑋 感恩合十
----------------------------------------------------
--
Tags:
Linux
All Comments

By Necoo
at 2011-09-29T12:00
at 2011-09-29T12:00

By Rebecca
at 2011-09-30T13:11
at 2011-09-30T13:11

By Emily
at 2011-10-03T07:40
at 2011-10-03T07:40

By Franklin
at 2011-10-03T11:46
at 2011-10-03T11:46
Related Posts
grep 時排除某些資料夾

By Mason
at 2011-09-26T23:15
at 2011-09-26T23:15
更新未授權來源 & backspace失效 解法

By Lydia
at 2011-09-26T21:04
at 2011-09-26T21:04
關於 GCIN 輸入法

By Dorothy
at 2011-09-26T15:47
at 2011-09-26T15:47
Solaris 10 x86 u10 發表... zfs還是沒內建dedupe :~

By William
at 2011-09-26T14:38
at 2011-09-26T14:38
GRUB2引導WINDOWS ISO開機

By Quintina
at 2011-09-26T11:04
at 2011-09-26T11:04