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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btrfs two Data sections and enospc error when trying to convert

I currently have a btrfs filesystem setup like this: # btrfs fi df /storage/ Data, RAID1: total=2.33TiB, used=2.32TiB Data, RAID0: total=2.00GiB, used=2.00GiB System, RAID1: total=32.00MiB, ...
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572 views

Ubuntu 12.04 and Windows 7 dual boot on ssd + hdd raid1

Despite reading dozens of HowTos and so on I am getting crazy about trying to get my dual boot system running. Maybe you can help me. My system: Asus Z87-pro motherboard with UEFI Samsung 840 Pro ...
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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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288 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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104 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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826 views

14.04 - Replaced drive in Software RAID 1 - How to make bootable?

I have an Ubuntu 14.04 x64 server with 2 500GB drives (sda and sdb) in a software RAID 1. I just had to replace sdb. Adding it back to the array with mdadm and resyncing was a snap. The problem I'm ...
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694 views

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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393 views

Ubuntu 14.04 Trusty with UEFI + Software RAID1

How to install Ubuntu on UEFI BIOS with Software RAID1? Should there be 1 partition for EFI and another partition for RAID1 (root+swap) on each drive? I wonder how it will update one EFI partition ...
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45 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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164 views

problem booting with failed software RAID 1

I have been experimenting with a software RAID 1 installation of ubuntu 12.04 LTS in virtualbox, but am having some issues here. What I basically did: 2 disks in RAID 1. Both disks contain a ...
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96 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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44 views

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 ...
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54 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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183 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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1k views

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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225 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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510 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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323 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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724 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: ...
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Slow raid5 resync with WD Green drives

The Question Why is my initial resync so slow? Initially cat /proc/mdstat reported ~ 30000K/sec. I then increased /sys/block/md0/md/stripe_cache_size from 256 to 16384. That increased the speed to ...
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153 views

Cannot install Ubuntu - stuck at 'Installation Type'

I am trying to install Ubuntu on my computer, but am stuck at choosing the device and partition to install to. I have three harddrives, one of them was going to be dedicated to Ubuntu, but two of the ...
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28 views

RAID not assembling after reboot, throws “uuid not in config file” even though it is

I created a RAID5 array using 4 x 2.0Tb drives using the disks GUI. I used mdadm --detail --scan >> /etc/mdadm/mdadm.conf to save the configuration. I opened the mdadm.conf file and double ...
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56 views

Ubuntu Server 14.04 TLS plus Hardware RAID

I have just completed hadrware installation of my new RAID server which will run with Ubuntu Server OS. I have installed Ubuntu Server OS and everything run seemingly without problems. However, I ...
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67 views

Unable to install ubuntu alongside windows 8.1 with raid0: no partitions detected

I tried installing Ubuntu 14.04 alongside windows 8.1 on my machine using an Ununtu USB drive in UEFI mode, but no luck: My machine is Asus UX301, preinstalled with Windows 8, upgraded to 8.1. Got ...
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30 views

Getting '??? ???' when trying to install Ubuntu

I am trying to install Ubuntu on my older laptop and whenever I get to the format your hard drive part it pops up with the message ??? ???. I am pretty sure it is to do with how my partitions were set ...
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47 views

Ubuntu 14.10 does trim SSD RAID 0 discs?

I've got Ubuntu 14.10 in a RAID 0 set up with 2 x Samsung Evo 840 SSD 256Mb, for performance reasons while acessing/modificating very large files. I've also got a schedule backup to another HDD for ...
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27 views

How do I use the RAID array in 12.04 LTS

extreme tenderfoot here. Have installed 12.04 LTS on SSD 64 Gb have 4x80 Gb HDD's. Would like to boot from SSD and use the RAID for well large files, low to moderate games, and occasional ...
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20 views

How to start RAID array?

a few months ago two volumes in my Synology DiskStation 412+ NAS crashed and until now I am still unable to recover the data but I am motivated and won't give up. I am able to see the hard drives ...
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728 views

/dev/disk/by-uuid/XXXXX does not exist dropping to a shell

I have just installed ubuntu 14.04 and when I reboot and remove the media I get the Gave up waiting for root device. Common problems: -Boot args (cat /proc/cmdline) -check rootdelay= (did the ...
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165 views

Setup FakeRaid Raid1 for data only for Ubuntu 14.10 and Windows 7

I want to create a FakeRaid RAID1 array of two hdd's that are being used only for data, no OS's on them. My OS's are Ubuntu 14.10 and Windows 7 which are each on seperate hdd's. Almost all of the ...
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104 views

Mdadm Raid 5 Array with 2 Failed Drives

My setup is as follows /dev/sdb/ /dev/sdc/ /dev/sdd/ /dev/sdf/ I have the following 4 1.5TB drives in a mdadm raid 5 array. One of the disks (sdb) died on me leading the array to start up running ...
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101 views

Rebuild Windows RAID 0 for permanent use in Ubuntu 14.04

My old PC (Core i7 920, Asus P6T-SE, 6GB RAM) recently suffered a motherboard hardware fault. The 2TB RAID 0 array containing the Windows installation and mostly media library was no longer ...
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258 views

How to add software RAID-1 to an existing non-RAID system?

I couldn't find any tutorials for converting a non-RAID system (Ubuntu 14.04 in my case) into a disk-level RAID-1 system after installing a second disk (/dev/sdb) Is the following correct? sgdisk ...
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57 views

Unable to access a Drive

I am new to this platform so I don't Know much about Ubuntu, Now I have installed the latest Ubuntu version that is Ubuntu 14.04.1 LTS (64 bit), I already have windows 8 installed in my PC and I have ...
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211 views

LUKS on software RAID not mounting on boot

I am trying to setup an encrypted disk using LUKS on a software RAID that was setup using mdadm on 14.04.1 LTS (GNU/Linux 3.8.13.26 armv7l) (Odroid U3). The problem is that the LUKS container is not ...
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142 views

Unable to access “222 GB Volume”

I've installed ubuntu 14.04 along with windows 8.1. After installing ubuntu I'm unable to boot windows and unable to mount my 222 GB volume. I got following error when i tried to mount my 222 GB ...
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95 views

USB 3.0 ExternalEnclosure Unmounts at random

Title says it all. I noticed the drive was unmounted, so I got to looking through dmesg and found: [31080.516164] usb 4-3: USB disconnect, device number 3 [31080.760493] usb 4-3: new SuperSpeed USB ...
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152 views

Boot repair on raid after crashed system-upgrade

I found it difficult to find an answer to this problem without specific step by step advice. During an Ubuntu system update an error occurred and it froze my PC. After a forced shutdown I encountered ...
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386 views

How to install Ubuntu server 14.04 on LVM RAID?

I want to try install ubuntu on LVM RAID logical volume, but fail on step grub installation. There are my steps as below: 1. use three HDDs called sda, sdb, and sdc to create a volume group. 2. ...
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18 views

How to setup a Ubuntu Raid to be accessed by the Domain Active Directory Server

I'm new to this. I have setup a Ubuntu 12.04 server on a Dell PowerEdge FS-12. I have setup a large area on the FS-12 (raid 50) to replace one of the drive mappings on the windows 2003 server. I ...
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32 views

How to make RAID1 on running ubuntu 12.04

I want to make RAID1 on a running linux I installed the Ubuntu server 12.04 Then, I installed the backuppc software. I installed the OS on a HDD with 160GB of storage So, I want to put another 2 x ...
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96 views

Unabel to open another HDD with Ubuntu 14.04

I'm new to Ubuntu. I have installed Windows 8.1 next to Ubuntu 14.04, on one HDD. This first HDD working fine, I can access to my windows file etc. But I have another HDD named "Maya" where I have ...
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67 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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84 views

How to re-create the partition table?

I accidentally dd the first 512 bytes using dd if=/dev/zero of=/dev/sdb bs=512 count=1 and the partition table is now gone. Is there ANY way to re-create the partition table(/dev/sdb). My hard ...
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166 views

Raid Won't Mount After Reboot

I'm building a new Ubuntu 14.04 server with RAID. I partitioned the operating system and swap partition on a small harddrive and have the RAID strictly for files. After adding a new disc to the RAID, ...
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13 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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1k views

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% ...
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197 views

Explain on how to setup a JBOD Ubuntu Server?

I have 3 hard drives. Two hard drives are SATA and one is IDE. C:\ - 300 GB SATA Hard Drive D:\ - 80 GB IDE hard drive. And third disk is not installed, assume as if it was. How do I merge all three ...
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20 views

Incorrectly detected fakeraid destroyed data during install

I have attempted to install ubuntu 14.04 on my PC in parallel (dual boot) with windows XP. My PC has 2 SATA disks, one was more-less devoted to the system, second one to data. However, when running ...
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34 views

Ubuntu RAID failure [get a warning]

Okay I might sound paranoid, but every day I think that my harddrives in both my servers failed for some reason and I am going to lose all my data. I have a server with a RAID 5 installation with ...