04-11-2013
Help needed! Raid 5 failure on a Debian System
Hello!
I have a 4-disc Raid 5 server running Open Media Vault (Debian). The other day, it disappeared from OMV, which was reporting 3 drives failed. Panic Stations. However, using MDADM I can get info from 3 of the drives which suggests they are functioning ok (info below). The remaining 4th drive doesn't give anything back via mdadm --examine. Any ideas how I can rebuild the drive without destroying the data? According to what I have read, as the three apparently working drives all have the same events number (103), it is fairly likely the data is intact on them - but how to I rebuild?
Thanks my lovelies!
Jon
/dev/sdf:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : dc344271:82f55bd0:fcfd0e16:a2a60bc8
Name : TTVServer:TTV2 (local to host TTVServer)
Creation Time : Mon Jan 7 11:03:39 2013
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
Array Size : 17581590528 (8383.56 GiB 9001.77 GB)
Used Dev Size : 5860530176 (2794.52 GiB 3000.59 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : active
Device UUID : c792c6b2:78fd4e78:e4f008ea:826e25e8
Update Time : Sat Apr 6 13:17:10 2013
Checksum : 30386dbe - correct
Events : 103
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 0
Array State : AAAA ('A' == active, '.' == missing)
/dev/sdg:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : dc344271:82f55bd0:fcfd0e16:a2a60bc8
Name : TTVServer:TTV2 (local to host TTVServer)
Creation Time : Mon Jan 7 11:03:39 2013
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
Array Size : 17581590528 (8383.56 GiB 9001.77 GB)
Used Dev Size : 5860530176 (2794.52 GiB 3000.59 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : active
Device UUID : c0426118:614cb315:15c9a0ee:2ad88e26
Update Time : Sat Apr 6 13:17:10 2013
Checksum : 7638ae70 - correct
Events : 103
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 1
Array State : AAAA ('A' == active, '.' == missing)
/dev/sdi:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : dc344271:82f55bd0:fcfd0e16:a2a60bc8
Name : TTVServer:TTV2 (local to host TTVServer)
Creation Time : Mon Jan 7 11:03:39 2013
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
Array Size : 17581590528 (8383.56 GiB 9001.77 GB)
Used Dev Size : 5860530176 (2794.52 GiB 3000.59 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : active
Device UUID : 8a96d5fe:594418b6:c63dafd0:c459e498
Update Time : Sat Apr 6 13:17:10 2013
Checksum : 5175f080 - correct
Events : 103
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 2
Array State : AAAA ('A' == active, '.' == missing)
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I was trying to get a server using a raid controller card up and running. I could not get the card configured right so i just installed the system strait onto a scsi drive.
Questions?
Is is nescessary to have the operating system on raid? Pros/Cons
Is it really difficult to go back later... (1 Reply)
Discussion started by: macdonto
1 Replies
2. UNIX for Dummies Questions & Answers
Hi guys,
I was asked to setup an Ultra60 (Sol 8) with an StorEdge A1000. Does anyone know if a probe-scsi-all is suppose to detect it? Right now it doesn't, so maybe I answered my own question :rolleyes:
We have an the same setup running already, but I wasn't around when that was setup.
... (3 Replies)
Discussion started by: Yinzer955i
3 Replies
3. SCO
recently we have purchased hp proliant ml350 g5 server and configured raid 5 with hp smartarray p200i sas controller.but i could not found any sas raid controller hp smartarry p200i driver for sco unix 5.0.7 :(.i searched on hp support site,but no use.any one can help. (3 Replies)
Discussion started by: prakrithi
3 Replies
4. Solaris
hi
this may be a very stupid question, but im quite new to Solaris (gonna buid my first system, Solaris 10 on x86 system, connected to other windows systems in a home network)
i wanna put a RAID 5 system in there to back up my other systems at home; iv read that its really so easy with SVM to... (4 Replies)
Discussion started by: Landser
4 Replies
5. UNIX for Advanced & Expert Users
Hi,
Could somebody sent me sample output of below commands on
1) Debian linux and 2) RHEL3 and 3) any RHEL version less than 3,
a) uname -a
b) cat /etc/issue
c) cat /etc/redhat-release or other equivalent file
Thanks in advance
- Krishna (0 Replies)
Discussion started by: krishnamurthig
0 Replies
6. Solaris
I have inhereted a Solaris 8 server which is running an important application in our production environment.
The dilema is that the server has just one internal hard drive I believe it was installed using jump start, it does not even have a CD ROM drive and root is not mirrored (since there is... (2 Replies)
Discussion started by: Tirmazi
2 Replies
7. SCO
After System power get failed
File system is not getting mounted in read- write mode (1 Reply)
Discussion started by: gtkpmbpl
1 Replies
8. AIX
Hello,
I have a scsi pci x raid controller card on which I had created a disk array of 3 disks
when I type lspv ; I used to see 3 physical disks ( two local disks and one raid 5 disk )
suddenly the raid 5 disk array disappeared ; so the hardware engineer thought the problem was with SCSI... (0 Replies)
Discussion started by: filosophizer
0 Replies
9. Debian
I am installing a Debian Server on a:
HP Proliant DL380 G4
Dual CPU's 3.20 ghz / 800 mhz / 1MB L2
5120 MB RAM
6 hard disks on HP Smart Array 6i controller (36.4 GB Ultra320 SCSI HD each)
I will be using this server to capture VHS video, encode, compress, cut, edit, make DVD's, rip... (0 Replies)
Discussion started by: Marcus Aurelius
0 Replies
10. Shell Programming and Scripting
Hi Gurus,
Good morning... :)
OS Info:
Linux 2.6.32-431.17.1.el6.x86_64 #1 SMP Fri Apr 11 17:27:00 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux
I have a script which takes multiples parameters from a properties file one by one and run in background (to do parallel processing). As example:
$ cat... (4 Replies)
Discussion started by: saps19
4 Replies
IDA(4) BSD Kernel Interfaces Manual IDA(4)
NAME
ida -- Compaq Intelligent Drive Array Controllers
SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file:
device scbus
device ida
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
ida_load="YES"
DESCRIPTION
The Compaq Intelligent Drive Array (IDA) technology is used to distribute data across an array of hard drives. It unites these hard drives
into one or more high-performance logical drives. The drive array is managed by an array controller.
These controllers have the ability to provide fault tolerance for the connected drives and optionally provide write cache for the logical
drives. It is also possible for an application to access the SCSI bus subsystem directly by using the pass-through interface.
HARDWARE
The following controllers are supported by the ida driver:
o Compaq SMART Array 221
o Compaq Integrated SMART Array Controller
o Compaq SMART Array 4200
o Compaq SMART Array 4250ES
o Compaq SMART 3200 Controller
o Compaq SMART 3100ES Controller
o Compaq SMART-2/DH Controller
o Compaq SMART-2/SL Controller
o Compaq SMART-2/P Controller
o Compaq SMART-2/E Controller
o Compaq SMART Controller
IMPLEMENTATION NOTES
Extreme caution should be exercised when using the pass-through interface. It is possible to interfere with normal system I/O and cause
hangs if pass-through is used to an active device. Pass-through should only be used to a device that is otherwise quiescent.
SEE ALSO
cam(4), pass(4), xpt(4), camcontrol(8)
AUTHORS
The ida driver was written by Jonathan Lemon <jlemon@FreeBSD.org> and Matthew N. Dodd <mdodd@FreeBSD.org>. This manual page was written by
Tom Rhodes <trhodes@FreeBSD.org>.
BSD
August 8, 2004 BSD