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 configure and run mdadm RAID with /boot and /boot/efi

I am finally getting around to setting up RAID on my existing Ubuntu 12.04 box. This is my first time with mdadm and I have read several tutorials and I believe I have the basics of the RAID part ...
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54 views

performed Fresh install from USB, at system restart it hangs at verifying dmi pool data

This is my first time installing an OS, so please bear with me; after much searching was unable to find an answer to my specific issue. Im doing a fresh install, with no other OS on the computer. ...
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206 views

btrFS RAID5/6 Understanding space usage and usability

Im currently thinking about experimenting with btrfs with my workload in place of ext4. Right now I have a few drives on order. I want to setup btrfs on the first drive and slowly expand the FS ...
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26 views

Fresh install of 12.04, boot problem after updates

This desktop has a hardware raid, for which the BIOS settings is "legacy." Fresh install. Then, when I enter the following command: sudo apt-get update update happens. The computer runs fine. ...
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173 views

Install Ubuntu 14.04 Only /dev/sda Showing

I'm using the live CD to try and install Ubuntu 14.04 on my old desktop. The two disks were previously part of a RAID array (of 3 disks, RAID , 1 degraded and couldn't be bothered rebuilding for an ...
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18 views

Mdadm Raid 5 and PCI-E Controller

so I've been searching and haven't found the exact answer i was looking for. Basically I current got a 6 hdd raid 5 array and i'm looking to expand it to 8. but almost all options involve another ...
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108 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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80 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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130 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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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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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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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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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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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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17 views

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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31 views

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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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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29 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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306 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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13 views

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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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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31 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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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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45 views

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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111 views

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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22 views

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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43 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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43 views

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: ...
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RAID setup for small application server?

I want to setup a small application server running 12.04, mostly running bioinformatics tools. The box has 16GB of RAM and 12 core and 6x2TB SATA disks. I need a system partition of, sat at least ...
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39 views

Error installing Ubuntu Server 12.04.3 lts with RAID 5 configuration

I have a Dell PowerEdge 2750 that has 8 x 500GB HDD's. I performed a RAID-5 configuration through the BIOS, essentially leaving me with about 3.3TB of available disk space. I then installed Ubuntu ...
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121 views

Grub on boot partition using raid0 and swap partition question

I'm new on this linux stuff and english isn't my language so have some patience please. =) Question 1: *When a boot partition is created during or before a installation of Ubuntu, is Grub bootloader ...
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1k views

Ubuntu 12.04 + software RAID = error: unknown filesystem, grub rescue (UEFI)

I'm posting here for the first time, though reading this site looking for solutions almost every day. I'm trying to install Ubuntu 12.04.3 with soft-RAID on a IBM server with UEFI support. After the ...
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124 views

IBM ServeRAID Manager (Application CD v 9.30)

Is there a way to install IBM ServeRAID Manager from the "IBM ServeRAID Application CD 9.30" to run it in Ubuntu Desktop and/or command line environments? After installing Ubuntu 12.4.x on 3 IBM ...
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37 views

Cannot replace a faulty disk using mdadm raid1

I have a Software Raid 1 array that I build a couple years ago. One day, after I loss current, the array became corrupted. One the drive was corrupted so, I removed it from the array and rezeroed it. ...
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360 views

Can't boot gpt + raid + lvm disk

I bought a pair of 3Tb disks to replace some existing 2Tb disks in my Kubuntu system. I partitioned them both using GPT, making a small "bios_grub" partition on both: root@allhats2:~# parted /dev/sda ...
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376 views

Ubuntu Server 12.04 on a ssd & data on RAID HDD

I'm new so please forgive me if i'm posting against the rules or something like that. I found some topics that are a bit related, but none with raid 10. I'm going to switch from Windows server to ...
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31 views

Cannot boot WIN 8.1 on RAID0

I cannot repair GRUB because Ubuntu doesn't see sda and sdb as RAID0 with Windows 8.1. I think if I might be able to mount it then I can repair Grub. Or maybe I am wrong because I am noob :) ...
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149 views

mdadm /dev/md2 inactive superblocks

Using a WD world book that stopped working after power cycle. I can ssh into the machine and all disks report healthy so if I knew more about Linux I think this might be a quick fix. Figured I'd ...
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38 views

Installation on RAID 6i array?

I've been trying to get some linux distro - ANY linux distro - to function on an HP DL380 G4. I have an array of six 36gb SCSI320-SCA drives on the onboard HP SmartArray 6i controler; not a single ...
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56 views

software raid resync does not work with new harddrive

After a harddrive failure, i tried to resync the existing software raid. I copied the partitionstructure sgdisk -R /dev/sdb /dev/sda sgdisk -G /dev/sdb And added the drive back to the volumes ...
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159 views

how to fix degraded software raid?

How can i fix this degraded raid? Someone can help me to figure out? ...but i am not sure i am adding the correct drive / partition. Possible for someone to confirm the command i need to use for ...
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185 views

Mount RAID1 Drive via USB into a New PC/Laptop

I have two old 1TB hard drives that were in a RAID1 array (mdadm). They were last known to be working fine and the issue with the old PC is the mother board blew out. I now have a laptop with Ubuntu ...
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31 views

How to make ubuntu see my raid1 setup?

I have raid1 setup that i was using in windows. Now I want to see it under ubuntu. Under Disks>Devices I see the 2 x 500gb hard disks as sdb and sdc (on sda is ubuntu) and Contents says "Intel matrix ...
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85 views

Using “Sata Controller” to add extra ports with mdadm software raid to create a raid 5 array

Here is the set up.... Ubuntu 12 LTS, Plex.. ect.I am looking on setting up a raid 5 using 4 2tb disks to create 6tb of space with a fail safe. One thing I have had a thought about which I am unsure ...
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403 views

Unable to install busybox-initramfs

I tried to install 13.10 Server to 2x3TB HDD with the following partioning (RAID1 + encrypted root and home) 2 times to following: 256MB EFI-Boot 500MB /boot RAID1 0,95TB / RAID1+encrypted 2TB ...
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45 views

What does the down-right arrow button do in Raid Disks 13.10 (gnome-disk-utility)?

When I open Disks (gnome-disk-utility), then highlight a RAID, then either click its gear -> RAID Disks... or CTRL+R, I get a window with three buttons, +, -, and one with a u-turn like arrow; what ...
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30 views

Stuck after Wubi installer

So after the Wubi finished the install and rebooted, something failed and went to busybox shell. I have tried this twice now. System Specs: I7 930 OC 4.21 6GB DDR3 1600 Mushkin Blackline C: WD ...
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270 views

Ubuntu Lucid/12.04 manual installation with RAID/LVM

My goal is to install Ubuntu 12.04 LTS using two 1T disks with mixed LVM over RAID. I am running the installation using the mini ISO (bad quality CDs had read error when I tried to use server ISO, so ...