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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RAID1 “conflicting device node” message on startup

I'm dual booting Win8.1 and Ubuntu 14.04 (Gnome Classic). I have RAID1 set up (on Asus Z87-A motherboard) with Win partition, Ubuntu partition, and NTFS partition for data. On Ubuntu startup, I see ...
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Recover RAID/LVM disks from Crash-Reinstall

I had a Kubuntu system, probably 12-04, with / on an SSD and /usr and /home on separate partitions on 4 1TB hard disks, with the partitions RAIDed together. I've just brought the system back up, the ...
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How do I add a partition (specifically swap) to my raid0 laptop setup?

EDIT: yes, gparted was the (in hindsight obvious) answer I foolishly didn't create swap space when I installed Ubuntu alongside Windows on my Acer laptop with 2 SSDs preconfigured as raid0. Now I ...
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656 views

Strange output of btrfs fi df after converting from RAID0 to RAID1

I just converted my 3 disk btrfs filesystem from RAID0 to RAID1 and balanced it. At first the data was all in the RAID0 filesystem, so running btrfs filesystem df showed something like this: (XX are ...
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A Guide to Install Ubuntu 13.04 using a RAID 0

Getting the error: Unable to install grub in /dev/sda? Because you are using a BIOS/fakeRAID0? If you manage to find this thread consider yourself in luck. I spent the last 48 hours trying to figure ...
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348 views

lvm disappeared after disc replacement on raid10

here my problem: I am running ubuntu 12.04 on a raid10 (4 disks), on top of which I installed an lvm with two volume groups (one for /, one for /home). The layout of the disks are as follows: Disk /...
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140 views

Ubuntu Server 16.04 SW RAID1 LVM - broken RAID unable to boot

I have an old notebook hp nx9020. I want to use RAID1 so I have PCMCIA card - SATA controller and SATA drive on it. I am using this configuration for years (maybe 8 years) on Debian, later on Ubuntu ...
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85 views

Where do I stand with btrfs?

First off, I understand btrfs is experimental and I should still have valid backups of all my data etc etc. No problems. I have setup a btrfs RAID5 array across 4x 3TB drives; Overall: Device ...
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78 views

Error unknown command hwmatch

I'm getting "unknown command hwmatch" message on each boot after I installed Ubuntu 16.04 following this steps: https://gist.github.com/umpirsky/6ee1f870e759815333c8 in order to setup RAID0. Special ...
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31 views

Is my mdadm command correct, should I check something else before entering it?

The question: Would someone please confirm that I have investigated the correct factors and am about to use the correct mdadm command before I do something that might damage the data in my currently-...
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110 views

fsck on a hardware RAID5

My Ubuntu 14.04 server won't boot properly and I want to check the hard drives with fsck to make sure everything is ok. I can boot into a systemRescueCD no problem. The server has 4 HD using a ...
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209 views

update-grub fails on lvm cryptoroot

Disclaimer: I'm running this server now but I did NOT install it. I have two disks connected to an Intel Hardware Raid Controller running in RAID1. On top of it there is a fully encrypted 12.04 ...
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100 views

Multiple Independent BTRFS Volumes

I have 4 x 2 TB drives. I want to set up one pair as a BTRFS RAID 1 volume, which I have done. I want to set up the second pair as a RAID 0 data, RAID 1 metadata volume, which I have not been able to ...
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18 views

windows non-boot raid

I'm thinking about installing Ubuntu on a Windows machine for dual boot. There are three Windows drives c: and d: are independent and g: is a RAID (0/1 I think). What do I need to do to get the RAID ...
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mountall: fsck /boot [333] terminated with status 1

I am running a Ubuntu Precise 12.04.4 LTS vm on an ESXi. Suddenly, the boot up process started crashing with the following message: /dev/mapper/luxsrv--vg-boot: 251/249856 files (6.4% non-contiguous),...
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58 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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699 views

Raid Issues Cannot Boot and Getting Superblock Errors

I am getting the errors below. How do I get the RAID array fixed. I'd like to get it mounted via the live cd that im booted into as well. Just so I can backup a few items. My setup boots from the RAID ...
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112 views

RAID 5 array mdadm add command no response

On ubuntu server, I have a software RAID 5 array, four 2TB drives. One of the drives died, I sent it in and got a replacement. I put the replacement in my server, used an sfdisk command to set the ...
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Strange RAID disk volume usage

I have Ubuntu Server 12.04, and my disk is full. I don't know why; my files don't use more than 5GB. Filesystem Size Used Avail Use% Mounted on /dev/mapper/...
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77 views

I grew an array with mdadm but I can't see the progress?

Today I added a 5th drive in my array, I did the following: mdadm --add /dev/md0 /dev/sdf1 My drive was added as a spare, I then did: mdadm --grow /dev/md0 --raid-devices=5 But when I want to ...
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615 views

Is there a fix for md raid failure on 12.04

I've got a system that ran cleanly on Ubuntu 10.04 LTS. Upgrading to 12.04 LTS / 12.04.1 LTS / 12.04.2 LTS has been unpleasant and unsuccessful. Install goes cleanly and I have installed as follows: ...
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206 views

Will Ubuntu spin down harddrives in an RAID 10 array?

I'm about to buy parts for a new home server and I'm planning on using Ubuntu(perhaps 12.04 LTS) For the OS, I'll use an SSD. For cold storage(big files, rarely accessed), I'm planning on setting up ...
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Installing 12.04LTS Server on a Fake RAID10

Scenario Install Ubuntu 12.04LTS Server on a RAID10 with boot on a RAID1. 4 - 2Tb SATA Hard Drives 3 Partitions (/boot, /, and swap) boot (256Mb from each disk) setup in RAID1 /dev/md0 partition ...
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247 views

How to choose LVM mapping mode when installing Ubuntu server 12.04?

I would like to create a volume group with striped mode on top of 2 RAID-1 devices. The issue here is I cannot choose striped when configuring LVM at installation stage. It's always be linear.
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700 views

Fixing broken raid0 with dmraid?

A while ago when I was still on Windows I had two secondary 1 TB hard drives that used a raid0 setup, fakeraid I believe with Intel. My primary hard drive died which seemed to have messed up the raid ...
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406 views

How do I mount disks with an Adaptec RAID controller on a dual-boot machine? (error code 12)

I'm trying to migrate from Windows to Ubuntu 12.04, dual-booting at the moment. One problem I am facing is the RAID controller, I'm not able to mount any of the drives connected to it. (The OS is up ...
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773 views

12.04 does not boot from the disk after installation

Installed Ubuntu on HP xw4600 workstation using CD not USB. But after installation it does not boot from hard drive. During installation it showed: The entire disk will be used: /dev/mapper/...
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How do you install Ubuntu on an Intel RST Raid?

I am attempting to install Ubuntu 16.04 to dual boot with Windows 10 on my new PC. I am using an MSI Z170A motherboard and two 512GB M.2 drives. My goal is to RAID0 both drives, and split the single ...
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40 views

Security of JBOD vs RAID while there is no backup

I have some large amount of data (~40 TB) consisting of small files. The data is currently stored on JBOD. Because the data is not super important and I cannot afford the needed disks there is no ...
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Unable to add raid drives to Asus z97 machine

I have a Asus z97-a Motherboard and I just installed 2 HGST 4 Terabyte drives. Awesome right? Except that I cant seem to get the on board ASUS Raid to work? "Control I" will get me into the Bios and ...
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Disk has disapeared, Raid 1 appears to have changed disks :( and emergency mode!

What a muddle....I had managed to set up a Ubuntu 16 server utilising a software RAID 1=(sda & sdb) Had added a second disc mounted to /media/BackupDrive sdc. all with samba, all was well :) ...
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Adding disk and converting RAID 0 to 5

I used MDADM to create a 4-disk RAID 0. I have another disk I want to add and convert the array to RAID 5. I'm already aware of the risks of RAID 5 but it is my best option at this time. How would I ...
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DMRaid Not Detecting its disks

We had a software raid using dmraid in an ubuntu 14.04 box. For some reason, we changed the sata ports per disk. The disks were removed and added again to the case but on different sata ports probably....
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Procedure for rebooting server with Soft RAID mdadm

I've just made a raid10 on my ubuntu 14.04 server, and i was wondering if there was any step too do if i would to shutdown/reboot my server. It a Software RAID with mdadm. Do i need to make a script ...
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LVM mirrored reads goes to one drive instead of both

I've set up LVM mirror on two HDDs. The mirror works (and even has proven it's efficiency when drives failed two times). The problem is that all read operations goes to only one HDD, I see it with ...
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68 views

RAID array shared between Windows and Ubuntu

I am booting both Windows 10 and Ubuntu 14.04 off their own dedicated SSDs. No problem. I have 3 2TB HDDs I would like to run in a RAID5 array which I can share between both operating systems. I ...
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Trouble Installing 14.04

9.10 64 Bit works just fine. No later version will install. If I install anything newer than 9.10 I get the error: attempt to read or write outside of disk 'hd0' Boot Repair and all the online ...
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dkms.conf location for new build RocketRaid documentation

Noob at work here. I have Ubuntu Server 14.04.03 LTS installed and running. I added a Highpoint RocketRaid 640L internal SATA adapter. I installed 4 drives and have them configured in RAID 5 via the ...
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How can I split a partition in a RAID1 array on ubuntu?

I just purchased a brand new server on OVH with disk specification: 2 x480GB of SSD SOFT. When I do df -h, the output is: Filesystem Size Used Avail Use% Mounted on /dev/root 20G 13G ...
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33 views

Ubuntu Server 14.04 LTS Server not seeing a RAID1 setup by AMD-RAID

I am attempting to install Ubuntu Server on a RAID 1 array I setup through my AMD-RAID. This is the legacy RAID that comes with my MSI motherboard which is configured in the BIOS. I have setup the ...
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98 views

What provides the mdadm-raid boot facility?

Three of my initscripts depend on boot facility mdadm-raid. In particular, user@host:/etc/init.d$ grep mdadm-raid * cryptdisks:# Should-Start: udev mdadm-raid lvm2 cryptdisks:# Should-Stop: ...
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How to verify grub2 on a Soft RAID setup

While upgrading the distro I got the following warning: Setting up grub2-common (2.02~beta2-29) ... Setting up grub-pc-bin (2.02~beta2-29) ... Setting up grub-pc (2.02~beta2-29) ... Installing for ...
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Raic controller with ext sata cage

I was wondering how difficult it is to create a Raid 5 system on an Ubuntu 14.04 desktop pc already running. I plan to use this Raid card with this Sata Cage and add 4 HDD for backup and storage. I ...
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Massive read Problem with LSI SAS 9211-8i Host Bus Adapter under 14.04.3 LTS

I have a new installed 14.04.3 system with massive read problems from a raid 10 over a Avago LSI SAS 9211-8i Host Bus Adapter. I tried to install the latest driver downloaded "Linux Driver-...
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344 views

Fresh install of Ubuntu Server 14.04 not loading on Asus X99-E WS SOFTWARE RAID 1

I have TWO 1TB drives configured as SOFTWARE RAID 1 using the Asus X99-E WS motherboard. Both Drives are connected to the Asmedia SATA controller instead of the Intel SATA controller. I intend to use ...
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76 views

Hardware (/fakeraid?) RAID 1 fails to show correct size using Asus X99-PRO

I have a Ubuntu-only system with 3 disks, 1 SSD drive and 2 identical mechanical drives. The first one has the core Ubuntu install while the latter 2 I want to set-up with RAID 1. Unfortunately I get ...
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85 views

Rebuilding RAID 10 after crash

I am running a RAID 10 The structure 1x USB drive contains the systems and is the bootup disk. 4x 2T drives contain the RAD10 Array. What happened: • 3x 2T disks and 1 x 1.5T disk • Recently ...
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98 views

Ubuntu MaaS Raid Preseed

Straight to the problem. I need a raid configured during the maas node commissioning via preseed file and I'm unable to find any meaningful documentation on how to do it. For example I need a preseed ...
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154 views

Use Marvell 88SE9172 sata controller for HW RAID 1

I setup a hardware RAID 1 with a Marvell 88SE9172 sata controller on a GA-Z97X-Gaming 7 motherboard. In my BIOS all settings seem fine and the RAID 1 was setup using the post boot setup. ...
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Error when installing Ubuntu for the first time

I'm trying to install Ubuntu for the 1st time. First time installing any Linux program. Have a brand new just ought of the box Thinkserver TS-140 with 2 - 1 TB drives configured as RAID 1. I get to ...