[rešeno] Ponovna vzpostavitev raid1 polja na novo nameščenem sistemu
Pozdravljeni!
Imam sledeč problem.
Sistem (Ubuntu Desktop 10.04) sem imel postavljen na /dev/sda1 (160GB).
Raid1 polje je bilo na /dev/sdb1 in /dev/sdc1 (1TB vsak)
Sistem sem postavil na novo (Ubuntu Desktop 10.04.2 - amd64) in instaliral mdadm. Kako bi ponovno zgradil polje raid1, da ne izgubim podatkov na raid polju? Je sploh možno ponovno vzpostaviti raid1 polje brez izgube podatkov?
Informacije z diskov, ki so bili v v raid polju so sledeči:
mdadm --examine /dev/sdb1
/dev/sdb1:
Magic : a92b4efc
Version : 00.90.00
UUID : 4084d578:a1c1bae5:387f8107:d580f651
Creation Time : Fri Sep 24 21:27:37 2010
Raid Level : raid1
Used Dev Size : 976759936 (931.51 GiB 1000.20 GB)
Array Size : 976759936 (931.51 GiB 1000.20 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Update Time : Tue Sep 28 15:48:39 2010
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Checksum : 6ce9722f - correct
Events : 36
Number Major Minor RaidDevice State
this 0 8 17 0 active sync /dev/sdb1
0 0 8 17 0 active sync /dev/sdb1
1 1 8 33 1 active sync /dev/sdc1
mdadm --examine /dev/sdc1
/dev/sdc1:
Magic : a92b4efc
Version : 00.90.00
UUID : 4084d578:a1c1bae5:387f8107:d580f651
Creation Time : Fri Sep 24 21:27:37 2010
Raid Level : raid1
Used Dev Size : 976759936 (931.51 GiB 1000.20 GB)
Array Size : 976759936 (931.51 GiB 1000.20 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Update Time : Tue Sep 28 15:48:39 2010
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Checksum : 6ce97241 - correct
Events : 36
Number Major Minor RaidDevice State
this 1 8 33 1 active sync /dev/sdc1
0 0 8 17 0 active sync /dev/sdb1
1 1 8 33 1 active sync /dev/sdc1
Se je že kdo srečeval s podobnimi težavami?
Hvala za odgovore.
Imam sledeč problem.
Sistem (Ubuntu Desktop 10.04) sem imel postavljen na /dev/sda1 (160GB).
Raid1 polje je bilo na /dev/sdb1 in /dev/sdc1 (1TB vsak)
Sistem sem postavil na novo (Ubuntu Desktop 10.04.2 - amd64) in instaliral mdadm. Kako bi ponovno zgradil polje raid1, da ne izgubim podatkov na raid polju? Je sploh možno ponovno vzpostaviti raid1 polje brez izgube podatkov?
Informacije z diskov, ki so bili v v raid polju so sledeči:
mdadm --examine /dev/sdb1
/dev/sdb1:
Magic : a92b4efc
Version : 00.90.00
UUID : 4084d578:a1c1bae5:387f8107:d580f651
Creation Time : Fri Sep 24 21:27:37 2010
Raid Level : raid1
Used Dev Size : 976759936 (931.51 GiB 1000.20 GB)
Array Size : 976759936 (931.51 GiB 1000.20 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Update Time : Tue Sep 28 15:48:39 2010
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Checksum : 6ce9722f - correct
Events : 36
Number Major Minor RaidDevice State
this 0 8 17 0 active sync /dev/sdb1
0 0 8 17 0 active sync /dev/sdb1
1 1 8 33 1 active sync /dev/sdc1
mdadm --examine /dev/sdc1
/dev/sdc1:
Magic : a92b4efc
Version : 00.90.00
UUID : 4084d578:a1c1bae5:387f8107:d580f651
Creation Time : Fri Sep 24 21:27:37 2010
Raid Level : raid1
Used Dev Size : 976759936 (931.51 GiB 1000.20 GB)
Array Size : 976759936 (931.51 GiB 1000.20 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Update Time : Tue Sep 28 15:48:39 2010
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Checksum : 6ce97241 - correct
Events : 36
Number Major Minor RaidDevice State
this 1 8 33 1 active sync /dev/sdc1
0 0 8 17 0 active sync /dev/sdb1
1 1 8 33 1 active sync /dev/sdc1
Se je že kdo srečeval s podobnimi težavami?
Hvala za odgovore.
Komentarji
Uspelo mi je vzpostaviti raid polje nazaj:
mdadm -v --create /dev/md0 --level=raid1 --raid-devices=2 /dev/sdb1 /dev/sdc1
Kasneje sem našel na spletni strani http://ubuntuforums.org/showthread.php?t=1648922 tudi ukaz, s katerim bi lahko opravil isto nalogo:
mdadm --assemble /dev/md0 /dev/sdb /dev/sdc
Ukaza nisem preizkusil, če pa kdo ve, me zanima kakšna je razlika med obema ukazoma (create in assemble)
Hvala za odgovore.
create pa uporabiš za novo polje..