Hello all,
first time that I write in this mailing list, I hope is the right place.
I need some help, and someone in the linux italian google group advices
me to write here, so excuse me in advance if this is not the right place.
I have some skill in linux, but surely I'm not a "raid ninja".
I have a old (very old) Thecus 3200PRO NAS, on wich I have installed, in
the far 2011, Ubuntu 10.04 server. The NAS have three 2TB HD configured
in RAID-5, mounted in /dev/md0.
Two or three weeks ago, I heard a strange noise from one of the hard disks.
Checking the "situation" with mdadm -D /dev/md0 tells me that the RAID
is degraded, and one of the disks has been excluded from the RAID.
Unfortunately, I have removed the wrong HD from the tray (damned
hurry!). Then I have re-inserted the good disk and removed the faulty
one, but now the RAID no longer starts
fdisk -l says the following (/dev/sdb is the drive removed by error, I
think):
Disco /dev/sdb: 2000.4 GB, 2000398934016 byte
255 testine, 63 settori/tracce, 243201 cilindri
Unità = cilindri di 16065 * 512 = 8225280 byte
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Identificativo disco: 0x0b4f7f28
Dispositivo Boot Start End Blocks Id System
/dev/sdb1 1 243201 1953512001 83 Linux
Partition 1 does not start on physical sector boundary.
and this for the good one:
WARNING: GPT (GUID Partition Table) detected on '/dev/sdc'! The util
fdisk doesn't support GPT. Use GNU Parted.
Disco /dev/sdc: 2000.4 GB, 2000398934016 byte
256 testine, 63 settori/tracce, 242251 cilindri
Unità = cilindri di 16128 * 512 = 8257536 byte
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Identificativo disco: 0x00000000
Dispositivo Boot Start End Blocks Id System
/dev/sdc1 1 242252 1953514583+ ee GPT
I have buyed a new 2TB Hard Disk, but I haven't touched nothing since I
don't know what to do if not more damages.
As I have seen on "asking for help" page of the wiki, these are the
outputs that can help someone to help me:
root@thecus:~# mdadm --examine /dev/sdb1
/dev/sdb1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 3115aed7:e283c89f:4407bf04:b1c52771
Name : thecus:0 (local to host thecus)
Creation Time : Sun Nov 6 12:27:15 2011
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 3907023730 (1863.01 GiB 2000.40 GB)
Array Size : 7803486208 (3720.99 GiB 3995.38 GB)
Used Dev Size : 3901743104 (1860.50 GiB 1997.69 GB)
Data Offset : 272 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 97707fac:738775ea:c9bc41e2:43f46b2c
Update Time : Mon May 28 16:39:36 2018
Checksum : 4a45df11 - correct
Events : 44021
Layout : left-symmetric
Chunk Size : 4096K
Array Slot : 3 (failed, 1, failed, 2, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed)
Array State : _uU 382 failed
root@thecus:~# mdadm --examine /dev/sdc1
/dev/sdc1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 3f7c6079:b69c27eb:8e4344e4:a3403434
Name : thecus:10 (local to host thecus)
Creation Time : Sun Nov 6 12:27:14 2011
Raid Level : raid1
Raid Devices : 3
Avail Dev Size : 4192256 (2047.34 MiB 2146.44 MB)
Array Size : 4192232 (2047.33 MiB 2146.42 MB)
Used Dev Size : 4192232 (2047.33 MiB 2146.42 MB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 19dbe832:b6c96752:770ba051:d7569302
Update Time : Sun Jun 19 19:17:54 2016
Checksum : 3a2e0b5a - correct
Events : 110
Array Slot : 1 (0, 1, 2, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed, failed, failed,
failed, failed, failed, failed, failed, failed, failed)
Array State : uUu 381 failed
and similar for the /dev/sdc(2 and 3) but not for /dev/sdb(2 and 3)
root@thecus:~# mdadm --detail /dev/md0
mdadm: md device /dev/md0 does not appear to be active.
root@thecus:~# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5]
[raid4] [raid10]
md10 : inactive sdc1[1](S)
2096128 blocks super 1.2
md50 : inactive sdc3[1](S)
524276 blocks super 1.2
md0 : inactive sdc2[1](S) sdb1[3](S)
3904385465 blocks super 1.2
unused devices: <none>
hoping to have given all the necessary information, you think can I
recover the RAID and data stored in?
How can I do?
Sorry for the length of the message (and obviously for my english too),
and really really thanks in advance for your help
Piero
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