hi everyone,
I'm in panic mode :-( because i got a raid 5 with 4 disk but 2 removed
yesterday i got a power outage which removed one disk. the disks
sd[bcd]1 was ok and saying that sde1 is removed but sde1 said that
everything is fine.
so i stop the raid, zero the superblock of sde1, start the raid and
add sde1 to the raid. then it start to reconstruct, i think it had
time to finish before this problem (i'm not 100% sure that it finish
but i think so)
the data was accessible so i went to sleep
today i discovered the raid in this state :
root@serveur:/home/math# mdadm -D /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Sun Mar 4 22:49:14 2012
Raid Level : raid5
Array Size : 5860532352 (5589.04 GiB 6001.19 GB)
Used Dev Size : 1953510784 (1863.01 GiB 2000.40 GB)
Raid Devices : 4
Total Devices : 4
Persistence : Superblock is persistent
Update Time : Fri May 6 17:44:02 2016
State : clean, FAILED
Active Devices : 2
Working Devices : 3
Failed Devices : 1
Spare Devices : 1
Layout : left-symmetric
Chunk Size : 128K
Name : debian:0
UUID : bf3c605b:9699aa55:d45119a2:7ba58d56
Events : 892482
Number Major Minor RaidDevice State
3 8 33 0 active sync /dev/sdc1
1 8 49 1 active sync /dev/sdd1
4 0 0 4 removed
6 0 0 6 removed
4 8 17 - faulty /dev/sdb1
5 8 65 - spare /dev/sde1
root@serveur:/home/math# mdadm --examine /dev/sdb1
/dev/sdb1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : bf3c605b:9699aa55:d45119a2:7ba58d56
Name : debian:0
Creation Time : Sun Mar 4 22:49:14 2012
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 3907021954 (1863.01 GiB 2000.40 GB)
Array Size : 5860532352 (5589.04 GiB 6001.19 GB)
Used Dev Size : 3907021568 (1863.01 GiB 2000.40 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1960 sectors, after=386 sectors
State : clean
Device UUID : 9bececcb:d520ca38:fd88d956:5718e361
Update Time : Fri May 6 02:07:00 2016
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : dc2a133a - correct
Events : 892215
Layout : left-symmetric
Chunk Size : 128K
Device Role : Active device 2
Array State : AAAA ('A' == active, '.' == missing, 'R' == replacing)
root@serveur:/home/math# mdadm --examine /dev/sdc1
/dev/sdc1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : bf3c605b:9699aa55:d45119a2:7ba58d56
Name : debian:0
Creation Time : Sun Mar 4 22:49:14 2012
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 3907021954 (1863.01 GiB 2000.40 GB)
Array Size : 5860532352 (5589.04 GiB 6001.19 GB)
Used Dev Size : 3907021568 (1863.01 GiB 2000.40 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1960 sectors, after=386 sectors
State : clean
Device UUID : 1ecaf51c:3289a902:7bb71a93:237c68e8
Update Time : Fri May 6 17:58:27 2016
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : b9d6aa84 - correct
Events : 892484
Layout : left-symmetric
Chunk Size : 128K
Device Role : Active device 0
Array State : AA.. ('A' == active, '.' == missing, 'R' == replacing)
root@serveur:/home/math# mdadm --examine /dev/sdd1
/dev/sdd1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : bf3c605b:9699aa55:d45119a2:7ba58d56
Name : debian:0
Creation Time : Sun Mar 4 22:49:14 2012
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 3907021954 (1863.01 GiB 2000.40 GB)
Array Size : 5860532352 (5589.04 GiB 6001.19 GB)
Used Dev Size : 3907021568 (1863.01 GiB 2000.40 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=0 sectors, after=386 sectors
State : clean
Device UUID : 406c4cb5:c188e4a9:7ed8be9f:14a49b16
Update Time : Fri May 6 17:58:27 2016
Bad Block Log : 512 entries available at offset 2032 sectors
Checksum : 343f9cd0 - correct
Events : 892484
Layout : left-symmetric
Chunk Size : 128K
Device Role : Active device 1
Array State : AA.. ('A' == active, '.' == missing, 'R' == replacing)
root@serveur:/home/math# mdadm --examine /dev/sde1
/dev/sde1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x8
Array UUID : bf3c605b:9699aa55:d45119a2:7ba58d56
Name : debian:0
Creation Time : Sun Mar 4 22:49:14 2012
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 3907025072 (1863.01 GiB 2000.40 GB)
Array Size : 5860532352 (5589.04 GiB 6001.19 GB)
Used Dev Size : 3907021568 (1863.01 GiB 2000.40 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1960 sectors, after=3504 sectors
State : clean
Device UUID : f2e9c1ec:2852cf21:1a588581:b9f49a8b
Update Time : Fri May 6 17:58:27 2016
Bad Block Log : 512 entries available at offset 72 sectors - bad
blocks present.
Checksum : 3a65b8bc - correct
Events : 892484
Layout : left-symmetric
Chunk Size : 128K
Device Role : spare
Array State : AA.. ('A' == active, '.' == missing, 'R' == replacing)
PLEASE help me :-) i don't know what to do so i did nothing to not do
any stupid things
1000 thank you
ps i just saw this, i hope it not mak y case worst
root@serveur:/home/math# cat /etc/mdadm/mdadm.conf
DEVICE /dev/sd[bcd]1
ARRAY /dev/md0 metadata=1.2 name=debian:0
UUID=bf3c605b:9699aa55:d45119a2:7ba58d56
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