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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Ubuntu 12.04 - Reinstall Grub on a Raid-1 via LiveCD

I had a hardware issue which caused my Ubuntu Server to fail. After the problem has been resolved I still cannot boot into my Ubuntu installation, but fall into initramfs instead. To me it seems that ...
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Can't alternate users, need to logoff to login other on ubuntu

I installed from scratch the Ubuntu 14.04 and configured it with a Samba share. There is a windows share RAID 1 drive (2 x 1 TB) with Mdadm, that Dropbox and more 2 backup solutions access (Acronis ...
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206 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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22 views

booting from USB with Raid

I am trying to install the latest version of ubuntu on a dell precision t3500. but when I boot to usb stick. I get an error that says busybox v1.21.1 (Ubuntu 1:1.21.0-1ubuntu1) build-in shell (ash) ...
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25 views

Fully recovering HDDs after using of RAID controller

I've been using Ubuntu for a year. But today happened something awful to me. I bought four-core AMD computer to do some virtuals there. But, I had wanted to reduce the risk and found motherboard RAID ...
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95 views

Dual-Boot Ubuntu and Windows 8 w/ SSD in Raid 0 won't install bootloader (Asus UX301)

I have been trying to install Ubuntu on my brand new Asus UX301 to no avail no matter what I try. I am always not able to install the bootloader on any partition. This does not matter whether I boot ...
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1k views

Software raid 1 on ubuntu 14.04 desktop

I am trying to setup Sofware RAID 1 for my ubuntu desktop (14.04) Unfortunately desktop installer no longer supports RAID1 configuration. Therefore I am trying to manually set this up. I followed ...
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37 views

RAID 0 recovery from lacie NAS

I am in desperate need of some assistance by the more experienced users out there! I am trying to rebuild a RAID0 that is composed of two 2TB Hard drives. These come out of a LaCie Ethernet BigDisk ...
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54 views

2-disk RAID array missing one disk. fdisk sees them both. Missing disk is “non-fresh”. What to do?

I have two physical 500 GB hard disks in my Ubuntu 12.04.4 PC and they are supposed to be in a 2-disk RAID array. However, mdadm -D /dev/md0 is reporting that /dev/sda seems to be inoperative, even ...
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128 views

mdadm /dev/md0 fails to load on boot

I am running mythbuntu 14.04 with a raid 6 setup using 10 hds. Every time I boot my system, mdadm fails to load. I have to run the following commands to get access to the system: All commands run ...
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30 views

Adding another HDD to Mirror the existing Hard Drive

My current setup is that I have a 160GB HDD as the primary where I have installed Ubuntu Server 12.04 LTS. I have a additional HDD (2TB) where I store my Files. I want to be able to use the software ...
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68 views

Installation on to a HP DL120 G7 hardware RAID not detected

Can anyone guide me to get Ubuntu server 14.04LTS installed on my servers hardware RAID. I have got the raid set up as raid1 using 2 1Tb disks, but when I go to install the OS I get the choice to ...
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54 views

Stuck setting up RAID 1

I've tried switching to linux many times before and each time came up to a problem and ended up giving up. This time I hope things are different. I have a home server: P8Z77, 1xSSD (with Ubuntu 14.04 ...
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19 views

Add disk and use software raid

I have a lvm partition on a disk, and another, identical drive with no data on it. Would it be possible to set up these two drives in RAID 1 using mdadm, with the same lvm data on top? Perhaps by ...
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17 views

Make RAID on one harddrive, but many partitions?

I have been reading a lot about raids and I want to get my hands dirty. The goal: Virtualize a copy of ubuntu and play around with raid. This means that there won't be more than one HD, hell the OS ...
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13 views

Raid: how to address the error on “--remove”?

I first stop the raid array, % mdadm --stop /dev/md127 mdadm: stopped /dev/md127 then do a check, % mdadm --detail --scan ... the array is no longer shown. then I do remove % mdadm --remove ...
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27 views

RAID10: why resync takes huge amound of time?

After setting up RAID10 and installing Ubuntu, I reboot then check /proc/mdstat. It shows [>...] resync = 2% finish=29702.5min speed=1030K/sec". That is about 500 hours or 20 more days. Is ...
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24 views

How to rebuild mdraid metadata?

I somehow hot swapping a failed hard drive on Ubuntu 14.04 LTS Server running mdraid RAID1 array without marking the failed drive to fail and remove it via mdadm. I successfully add another drive on ...
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39 views

What version of MegaCli should I download for H710p?

I am using Dell Perc H710p adapter. When trying to download MegaCli from LSI, someone suggested to check the parameter like. % lspci -v | grep LSI When I run this command, I got. 03:00.0 RAID bus ...
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24 views

Ubuntu server installation - partition can't finalize

I need help on ubuntu server installation. Just can't pass the partition section. I have 3 hdd 2 with raid 0 from bios and 1 for the operating system. in my previous kubuntu setup , home directory ...
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30 views

Problems booting windows and ubuntu

I just installed Ubuntu on a Windows 7 machine and Windows will not boot. A few notes: This computer is connected to RAID and another HD. I installed ubuntu on the nonraid drive and windows is on the ...
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179 views

Failed to install GRUB on a separate '/boot' partition on a fake RAID 0 (12.04LTS)

I'm having some problems getting GRUB configured for Ubuntu 12.04LTS on a fake RAID 0. I can either get the GRUB rescue prompt at startup, or just a GRUB prompt but I cannot boot to Ubuntu manually. ...
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27 views

Upgrading and recovery options with software raid 1

I recently installed Xubuntu on a spare machine that is serving as a NAS, voice communication, and hosting various other services. I have a 120GB SSD containing the OS and 2 4TB drives configured as ...
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437 views

Can't mount RAID after upgrade

I just upgraded my box to 14.04 and on bootup I got a message, that my RAID devices can't be mounted automatically so I chose to skip it and work through it after boot time. Now booted up, A mount -a ...
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159 views

Installing and booting Lubuntu on ReadyNAS with Btrfs

I have NetGear ReadyNAS Business Pro with 6 Place for 6 Disks I did a hack the box (basically it is a normal PC with Intel CPU) I upgraded the CPU and I used the ReadyNAS OS 6 (which is Debian ...
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123 views

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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263 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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27 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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196 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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19 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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154 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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100 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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219 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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67 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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40 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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52 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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174 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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18 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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33 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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105 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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133 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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33 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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400 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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100 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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39 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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37 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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30 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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53 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 ...