RAID stands for redundant array of independent disks, and allows for disks to be linked in various ways. Common RAID setups in Ubuntu are a hardware RAID, FakeRAID and software RAID.

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How to partition for a successfull boot with raid5 + lvm +encryption

I have been trying to make this setup work for several days. The system never boots... When I do a setup without the software raid I can get it to work. How should I set up my system partition to be ...
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111 views

Install the grub boot loader on hard disk fails

I have the following disk setup, raid5: Disk /dev/sda: 111.8 GiB, 120034123776 bytes, 234441648 sectors Disk /dev/sdb: 111.8 GiB, 120034123776 bytes, 234441648 sectors Disk /dev/sdc: 111.8 GiB, ...
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152 views

How to mount Intel Matrix RAID 0 on Ubuntu 13.10 live?

I'm not a heavy Ubuntu user. I have a Sony Vaio Z series laptop with two 64GB SSD disk working in RAID 0 (Intel Matrix - Intel Rapid Storage Technology) under windows 7. The quest is to mount this ...
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81 views

ubuntu doesn't recognize lsi megaraid 9240 (Asus Rog motherboard)

I have an LSI Megaraid 9240 4i raid controller. When I put it in my computer I can configure it for raid1, the bios recognizes it, but the Ubuntu installer hangs with "no media found". I use a flash ...
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132 views

Ubuntu 13.10 unable to detect windows 7 installed partition

I know this is being asked again and again, but it seems like there is no way out. I'm really losing it now! So here it goes: I built this below average rig yesterday : core i3 4130 3.4Ghz [64bit] ...
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955 views

Why isn't md raid assembled after reboot?

I'm trying to get an Intel RAID setup. The problem I have is that after a reboot the raid is not available. These are the steps I go through to setup the Intel RAID using the mdadm command. I've ...
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25 views

Install Ubuntu 12.04 lts on raid 1 centos

My current computer runs on CentOS with RAID 1. It has 3 HDD : one for system files, 2 others for data in raid 1. I want to change CentOS for Ubuntu, but i want to know if, by removing CentOS and ...
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123 views

Server 13.10, Raid1, LVM, EFI booting on 2nd disk

I've read a whole bunch of posts of trying to get your Raid1 to boot up on the second disk if the first one failed. Nothing has failed yet, but I'm trying to test my setup. 2nd drive comes up with ...
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96 views

Need help properly setting up raid5 (align then mount)

Trying to ¨start over¨ and following this guide: http://dennisfleurbaaij.blogspot.com/2013/01/setting-up-linux-mdadm-raid-array-with.html I used fdisk and mdadm to create a raid 5, and I believe I ...
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57 views

Kubuntu 12.04 Won't Boot - Busybox

I'm using software RAID1 and installation was fine. I booted in, updated, installed programs, etc. Then when I restarted I got sent to the Busybox prompt. At the advice of people in this forum, I ...
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154 views

Ubuntu 12.04 ext4-fs error/inode

I am running a Dell PowerEdge T420 with Ubuntu 12.04 32bit. The hard drives are a RAID1 setup. Last week, I began getting errors that cause the build I am running to fail. I found this in the log ...
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136 views

btrfs - did I just turn RAID1 into RAID10?

I set up a btrfs partition using two 3 TB drives in RAID 1: $ mkfs.btrfs -m raid1 -d raid1 /dev/sdd /dev/sde $ mount /dev/sdd /media/media Copied a bunch of data onto the partition, with the ...
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147 views

How to mount multiple folders to same hard disk?

I have a microserver from hp and got a SSD, which I planned to use for the OS (Ubuntu Server 12.04), while two more harddisk should run in RAID 1. People recommended me that during installation of ...
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35 views

How to monitor fakeRaid

I installed two disks on Ubuntu as fakeRAID. Setup and everything is working fine. Now I am trying to monitor them to send an email on drive failure. Usually I do this with mdadm for software raids, ...
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79 views

optimal ubuntu home server/raid setup

I have two machines at home (plus laptop and work laptop) that I just put in rackmount cases. Right now each machine has several drives not set up with RAID. In the not too distant future, I want to ...
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39 views

Hardware RAID1 - ext4 errors won't go away with fsck

Short summary: yesterday my server's root drive (RAID1, 2 identical drives mirrored) was kicked into read-only. Trying to reboot I saw superblock errors, so I boot into Live-CD and fsck the drive. It ...
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37 views

RAID6 Ubuntu rebuild - how to calculate best parameters for fastest rebuild

I am doing a resync on a RAID6 array and I am looking at some 2 days to complete. I looked here for hints on how to speed it up, but I have, instead, managed to slow it down! HW details are: 10x 4TB ...
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27 views

How to remove encryption from volume during installation

I'm currently in the process of installing Ubuntu Server 12.04 onto a fresh build. I have two 3TB hard drives that I'd like to run in software RAID 1, and was following this tutorial. During ...
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129 views

Is my BIOS RAID 1 set up correctly (Gparted warning message)?

I have set up a RAID 1 configuration on Click BIOS II running on a MSI motherboard (Z77A-G43). It uses two 2TB hard drives of equal sizes. After setting up the BIOS settings, I had the option to ...
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53 views

RAID Controller Hardware compatability?

I might be out of my element here, I am new to Ubuntu Server, and I am a intermediate Linux/Unix user, but zero experience with admin of such. I am trying to build a server to play with for media ...
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51 views

Using an already setup RAID 1 array on Ubuntu 12.04

I have just installed Ubuntu 12.04LTS on a separate HDD to dual boot with Window 7 x64. My Windows install is on an SSD and my system includes two 3TB Seagate drives in Raid 1. Raid is provided by the ...
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VMHosts and SSD drives

EDIT: (Sorry for the wall of text) not so new Linux user but I still consider myself mostly a novice, because this is me jumping off the diving board, ANYWAYS:... From what little research I've ...
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45 views

Installing Ubuntu 12.04 on Raid installation

We have acquired an machine with Embedded Server RAID technology 5.4.1 and trying to install Ubuntu 12.04.4 onto it. There are two disks and we have defined one logical volume with RAID 1. Then run ...
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I've made a bit of a mess with my hd and raid setup

I'm using ubuntu 12.04.4 Server and this is my current setup: My hard disks: wax@petra:~$ sudo fdisk -l /dev/sda Disk /dev/sda: 1500.3 GB, 1500301910016 bytes 255 testine, 63 settori/tracce, 182401 ...
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101 views

Ubuntu 12.04 installation hangs after first two screens

I'm having a strange issue while trying to install Ubuntu 12.04.4 (64bit) to my system (preferably to the SSD). When I boot from DVD/USB i get to the Installer, after choosing my language and ...
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154 views

Disk failure, fsck not doing anything

Note: This started off as a question but while i was typing i tried different things and eventually got it working. I still wanted to post it in case it can help anyone else Problem: Crashed disk, ...
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72 views

Edubuntu installation setup fail

I'm having too many problems with my project. Let me explain it. I have just bought a brand new HP Proliant Ml310e Gen8 v2 server with 32 MB of RAM on a RAID 1 system (3TB + 3TB) to deploy an ...
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110 views

How to I make Ubuntu to recognize Dell PowerEdge R420 RAID 1 made of SSD?

I have a Dell PowerEdge R420 configured with 2 SSD in RAID 1 and I installed Ubuntu on it. So far so, good but it seems that the OS has no idea about the fact that it is running on a RAID nor that is ...
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31 views

Mdadm Raid 5 Issues

Not really sure where to start. Pretty new to both raid and ubuntu so sorry in advance for any dumb questions. well here we go. Been having some raid troubles lately, I got a raid5 array with 6 ...
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59 views

Best way to achieve data redundancy ond different sized hard disks

I have a 2TB and a 1.5 TB hard drive. My ultimate goal is that I have a partition of 1.5 TB which is mirrored to both disks, so that I won't lose data if one hard disk crashes. Of course I'd like to ...
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311 views

luksFormart error Failed to setup dm-crypt key mapping for device

I'm trying to format a disk with LUKS and when I try the command cryptsetup luksFormat /dev/loop0 I put the passphrase and then this error message appear: device-mapper: reload ioctl on failed: ...
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How I can I set up Ubuntu with as much as possible on a nonbootable raid

I have an older system with a BIOS, a 64gb SSD, an a nonbootable fakeraid running windows 8.1 I want to install ubuntu and move as much of the installation as possible to the nonbootable raid. I've ...
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Which is better for a home media server: zfs or btrfs or LVM/md? [closed]

I'm looking at building a new home server and would like a flexible filesystem. Both btrfs and zfs are interesting. I want to be able to do soft raid and have flexible solution allowing me to expand ...
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218 views

Recovering a degraded RAID array

I was just given an external hard drive by a colleague, with the comment "Hey, you're running Ubuntu. Maybe you can recover some of the data from this really old disk that nobody knows who last used?" ...
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72 views

S.M.A.R.T. test reports defect, can I re-initialise the drive?

On my server I have a 4 disk RAID-5 configuration. One of the drives fails the S.M.A.R.T. test. The array has not yet been declared as degraded but the disk shows up as needing replacement. I don't ...
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96 views

How to delete file with permission?

This is output of ls -l of the file. ?????????? ? ? ? ? ? Es0g00og0QEX-psLsdocmdfj9skdL (Filename is Red color) It's a file in /fscache/cache under /data of my Ubuntu home station. I used root user ...
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38 views

mdadm large memory consumption

I'm building mdadm RAID 6 (8 WD Red 3 Tb) on Ubuntu 13.10 x64 server with ext4 file system. When I download torrent on the array, server RAM is filled for maximum cap (8 GB). Memory becomes free when ...
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33 views

All data gone from healthy raid5 array

I have an issue with my Raid 5 array that is puzzling me. The PC crashed yesterday and after a reboot my raid 5 array was empty. cat /proc/mdstat Personalities : [raid6] [raid5] [raid4] [linear] ...
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101 views

Bash script fault creating mdadm array

I am working on a script to create md1 array, first to check if the array exist if not it will create it. I get command as command mdadm not found and a few others. The script wont run. ...
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66 views

How to check if last command succeeded and make that command auto accept prompts?

I am working a script to create a raid5 array. The question is how to put the command in a if (to see if the command succeeded), and when the script ask to continue creating array it will auto say ...
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1answer
206 views

Bash script to check if mdadm is installed if not it will install it

Working on a bash script which first will check if mdadm is installed, if not it will install it. This is my script but it's not working correctly. Hope someone can help me. if [ "$mdadm" = "mdadm" ...
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1answer
71 views

Bash script to check if mdadm is installed if not install it

I am currently working on a bash script to create raid5 with 3 disks and one hotspare. I am confused of how to create a script which first check if mdadm exist, if not it will install it and name it ...
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28 views

Upgrade to RAID

I have a system running ubuntu server latest main version and I have it running on a single disk. I have installed another identical hard drive in the machine and I would like to convert this machine ...
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Realigning Ubuntu RAID - partition misaligned by 3072 bytes

I've run into this issue with the "Advanced Format" drives - and it is dramatically affecting the speed of the array. All resolutions I found seemed to deal with RAID arrays if Ubuntu was a part of ...
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md0 iscsi share target

I semi followed the following: http://www.server-world.info/en/note?os=Ubuntu_13.04&p=iscsi Current /etc/default/iscsitarget ISCSITARGET_ENABLE=true # ietd options # See ietd(8) for details ...
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Disabling windows only features (Intel SRT, etc) so I can install Ubuntu (Dell XPS 15)

I'm working on installing Xubuntu on a Dell XPS 15 and I trust this guide. It says I should do the following: Turn Secure boot off. Turn Fast boot off. Turn Intel SRT off. Remove RAID meta-data ...
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36 views

GRUB error with RAID when other HDD's exist

I had this exact issue with Debian. Grub has no issues loading at all as long as all of my HDD's are turned off except for my hardware RAID array. When there's more than just my RAID, it fails to ...
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Raid stability with Ubuntu

Im planning on building a Ubuntu box as a raid storage computer connected over a network to my other home computers. I have about about 4TB of data I would like to have on a secure backed up system, ...
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44 views

Sharing issues between Ubuntu 12.04 and win7

Background: I have an HTPC with a raid 5 array. This setup has been working for nearly 1 year without a single hiccup. Ubuntu 12.04lts is installed on a separate ssd within the HTPC. I have a pc ...
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Ubuntu Server Raid Swap

I installed Ubuntu server 12.04.3 LTS with RAID partition by installator, In free command swap is 0. root@xxx:~# free total used free shared buffers cached Mem: ...