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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Unable to Partition Software RAID 0 array with 16.04 Server + Z170 Skylake, ACPI Exception in log

I'm trying to do a clean install of 16.04 on some new hardware, and I'm unable to partition/install onto a RAID 0 array. Motherboard: AsRock Z170 Fatal1ty ITX/ac (SATA devices set to AHCI, also tried ...
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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 ...
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64 views

RAID 0 installation instructions

I am looking for specific instructions for installing Ubuntu (clean install) on 2 identical hard drives in a RAID 0 configuration (striped). Have never found anything that describes how to do ...
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12 views

kworker using all my IOs, Postgres slow

I have 2 SSDs set up in RAID 0 configuration with a single volume on them that I've been using without problems for 3 months straight to run a PostgreSQL database. Suddenly, today, the DB got really ...
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Server 14.04 Install Onto Software RAID1 Fails to Boot

New 14.04 server install onto host with 2 x 1 Tb drives, followed https://help.ubuntu.com/lts/serverguide/advanced-installation.html to setup a software RAID 1, end of install reboot and I get no ...
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17 views

ZFS zpool import in ubuntu taking very long after system crash and reinstall OS

Don't know if the events were related in any way: zpool set to automatically run scrub on crontab, most recent scrub completed a few days ago, 3 unrepairable errors on 3 files. I did not require ...
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Raid 0 drives are not detected during Ubuntu 15.10 installation on GT72S 6QE dominator pro G

I have GT72S dominator pro G, with 128+128 Gb RAID 0 configured SSDs. I have 1TB mechanical disc as well. Windows 10 on UEFI mode is already installed. Trying to dual boot ubuntu and w10. The problem ...
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25 views

Help, cannot install Grub

I have a recent motherboard (GA-X79-UP4), and a couple of 3TB Seagate drives. Trying to install Ubuntu 15.10, in a RAID5 configuration. Using the server image, since the desktop one does not seem to ...
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20 views

Creating boot partitions on multiple disks

I'm trying to get some redundancy with RAID1 on my Ubuntu Server box. I've made some good progress using the install wizard but I'm stuck on the following: >> lsblk NAME ...
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23 views

Ubuntu won't boot after install on software raid r

I have installed server v15.10 and created a software raid 5 array. After partitioning and setting the EFI system partition as bootable it does the install with no problems. When done it reboots and ...
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37 views

Trying to mount old NAS hard drive - mount: Structure needs cleaning

I had a Western digital. The software was not working anymore, so I remove the hard drive. The HD is a Western Digital Caviar Green of 1 To I connect through a USB hard drive converter and..... ...
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15 views

MDADM Existing RAID

I just swapped from Fedora 20 over to Ubuntu 14.04 LTS. I have a pair of drives that were setup using RAID 1 (mdadm) and working beautifully. The OS is on a third drive (SSD). The web is awash in ...
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9 views

Moving from two hard drives to one, plus a RAID array. Will I have problems?

I currently have a setup with two filesystems, /dev/sda and /dev/sdb, each with one partition. I boot from /dev/sda1 and have my /home on /dev/sdb1. /dev/sda is a solid state drive and /dev/sdb is a ...
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25 views

Ubuntu MaaS 1.9 RAID1 boot from degraded

MaaS 1.9 came out with a new feature of creating raid arrays with mdadm. I would like to use this to create redundant boot disks of a server which has no hardware raid. MaaS only allows one boot ...
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21 views

Copying a Ubuntu installation from a single hard drive to BIOS RAID 0

I am trying to copy an existing Ubuntu installation on a 250GB drive to a BIOS created RAID 0 array with two 160GB drives. I've tried Clonezilla, but it doesn't seem to support BIOS RAID, as the two ...
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23 views

SSD Not part of Raid?

I was playing around with BTRFS calculator (link below). I have 2 2TB Drives and 1 3TB drive. I also have a 120GB SSD. I was thinking Raid 5 with the operating system loaded on the SSD. It said I ...
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28 views

Auto-mount flashcache'd drive (RAID array) on startup

I have recently created a RAID5 array with mdadm and cached it through SSD using flashcache. Everything works great, however I cannot make the drive to be mounted on system's startup: Every time a get ...
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43 views

SATA configuration mode RAID doesn't pick up SSD

I just got a laptop with Windows 10 on a 500gb SSD. I partitioned it in order to install Ubuntu. When I got to the Ubuntu installation screen, I couldn't pick up my SSD (it only picked up the HDD). In ...
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45 views

MAAS 1.7.6: ProLiant DL360 Gen9 - HP Dynamic Smart Array B120i controller driver for Ubuntu 14.04 does not work when configured as RAID 1 device

We are having issues configuring two ProLiant DL360 Gen9 servers, which are configured in a RAID 1 and in UEFI mode. The installation gets stuck at 'booting under maas direction'. The servers have ...
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21 views

Nagios service not showing up in Web Gui

I have a Nagios install and am trying to add check_raid plug in. I have 3 custom cfg files that I added to nagios.cfg called custom-commands.cfg custom-servicegroups.cfg and custom-services.cfg. They ...
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29 views

Trying to monitor a windows raid with Nagios on Ubuntu 15.10

Hello I am trying to get my Nagios install, which is working fine, to monitor a windows server with some raid disks. I have a nagios installation working but when I installed the ...
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34 views

mdadm: partition is not a block device

I was trying to create a RAID 1 partition by running the command mdadm --create /dev/md0 --verbose --metadata=0.9 --raid-devices=2 --level=raid1 --run /dev/sdc1 missing. But mdadm's response was: ...
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9 views

mdadm raid superblocks gone after a power cycle and moving the array ?

Our RAID superblock issue has many of the same details as this We have not been so lucky to see the raid again to recover data and start over . What complicates our issue is this is a 24 disk ...
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9 views

What “cbaaacigei” means in /dev/mapper/isw_cbaaacigei_foobar?

After creating an Intel software raid with the command dmraid --format isw --create foobar --type 0 --disk /dev/sdb,/dev/sdc a RAID-set was created with the name isw_cbaaacigei_foobar After ...
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21 views

Create dualboot with existing Windows raid array by adding SSD

I currently have a 3-disk RAID 0 array with Windows 10 installed. The array is a hardware array via my MSI motherboard. I would like to add a new blank SSD drive with K/Ubuntu on it, and have that ...
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13 views

Add a RAID to existing setup

So let's say I have 3 drives. D1 = 120GB SSD with Ubuntu 14.04 on it D2 = 2TB NAS Drive D3 = 2TB NAS Drive If I have D1 already setup and running Ubuntu how could I add D2 and D3 as a RAID 1 array ...
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22 views

xfs on raid0(mdadm) proper mounting

Reading manuals on howto tune xfs on raid is totally crazy. In my case I have raid0 of 2 disks with 512K chunk size. Physical disk block size is 4096 The correct su and sw should be su=512k and sw=2? ...
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24 views

mdadm raid1 not recognized if the HDs are put in another bay

I have created a RAID1 2TBx2 using mdadm in Ubuntu. The two drives are in an external bay (Icy Box IB-120StU3-Wh Dual Bay Docking Station) connected via USB to the laptop. Everything works fine. ...
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NAS JBOD2 2 Drive Raid 0 Enclosure Failure Data Recovery

0 down vote favorite I have a Caldigit Enclosure that had 2 2TB Sata Hard Drives in the unit. The Enclosure seems to have failed during a data recovery operation where the partition was lost during a ...
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17 views

Install Ubuntu 14.04 with RAID 1

I want to install the ubuntu 14.04 desktop LTS on my computer. I have 1 SSD and 2 HDDs and I want to set the SSD as the boot drive and the 2 HDDs as RAID 1. Is this possible and if so, what are the ...
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Compatibility of Ubuntu 12.04 with HW RAID part number: L5-25413-17

I am setting up a Linux server with Ubuntu 12.04. I want to use HW RAID part number L5-25413-17. Has anyone successfully done this?
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52 views

Recover Server from recovery mode(firewall closes ports)

My server( Ubuntu 14.04 - Plesk - RAID1 ) is now in normal mode. Almost all ports disabled by firewall as plesk port 8443, so plesk login panel is not opening. Also Website is not opening. ...
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34 views

Does the 3ware SAS 9750-4i work on 14.04.03 LTS?

I will be installing a 3ware SAS 9750-4i RAID controller hooked up to 2 x 2TB Seagate Surveillance HDDs in a RAID-0 stripe config. My intention is to use Ubuntu 14.04.03 LTS (either Server of DT, not ...
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51 views

Ubuntu 14.04.3 on Acer Aspire S7

I decided to move from Windows 10 to Linux a couple of days ago. I started off by trying to install Mint 17.3 Cinnamon 64bit off of a LiveUSB on to my Acer Aspire S7-391 which is an UEFI-based ...
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29 views

Hardware RAID controller on Ubuntu Server 14.01 server

It seems Ubuntu Server 14.04.1 does not support Hardware Raid controller (Smart Array B120i - embedded). Are there any drivers that will help support?
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Ubuntu Server 14.04 LTS Software Raid1 + LVM setup

Is it possible to software Raid1 + LVM on a already running production server? If possible where can I get instructions please. Many thanks..
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36 views

Failure to mount raid array after upgrade to 15.10

I need help fixing my RAID arrays. here is what happened: I previously used ubuntu 14.04 with an SDD for the system and two identical 1TB drives as RAID1 array. Each drive is partitioned in two ...
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27 views

Migrating from dmraid to mdadm

I have a problem that a 6.9TB RAID5(FakeRaid) logical volume is shown as 3.2TB in Ubuntu. Some study on the web and I found that this may be because dmraid is being used while mdadm has better support ...
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38 views

Raid 5 Array will not start and one drive failing SMART test

First of all please forgive my noobieness but I will try to provide as much info as complete as possible. I had recently experienced a power outage that resulted in my Raid 5 Array from starting. ...
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27 views

samba share encrypted volume

I'm sure this has been answered a thousand times, but I can't find one, so apologies. I'm running Ubuntu 14.04 LTS on a file server, with samba 4.1.6. Shared files are in a RAID volume, ...
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16 views

No HP RAID with ubuntu 12.04

I've just bought a pair of HP DL360 G9's which have an onboard RAID card, I've configured the RAID volume and put in my kickstart CD only to find that individual disks are visible (SDA, SDB, etc) ...
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50 views

grub rescue on server with lvm+raid1

I have grub rescue > prompt after a power failure. I do have a Ubuntu Live CD. Any procedures on how to install grub on this kind of setup. raid device - md0 boot partition - VG-lv1 raid devices - ...
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How to install RAID management tool for ubuntu 14.04.3

This is the output of lsb_release -a command; No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.3 LTS Release: 14.04 Codename: trusty According to ...
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RAID 1 on existing system

I have a system that has been running for over 2 years with one disk. Recently, I brought another disk same size and speed as the current drive. I wanted to add the new drive and convert to a RAID ...
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47 views

After Installation Ubuntu Server 14.04 Show Blank Screen and can't Login (Problem with Raid)

I have a home server with below specification: - Asus Z87-C motherboard - 2 Internal Network Card (One On board and One PCI) - 2 X HDD 1TB (RAID1-Mirror through motherboard solution - Not Software ...
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30 views

Setup RAID 10 on RAID10 supported main board failed

I have 4x2T SATA disks and want to build RAID10 on a main borad: Intel Server Board S2600CW2 http://ark.intel.com/products/83027/Intel-Server-Board-S2600CW2. Somethings are quite confusing to me ...
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21 views

Ubuntu 14.04.3 LTS - RAID 5 volume vs capacity discrepancies

I currently have a RAID 5 setup on an Ubuntu 14.14 RAID setup includes (3) 2TB disks. The RAID /dev/md127 is showing 4.0 TB in size. Which would be correct I believe on a RAID 5 setup with 6.0 TB in ...
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Need help RAID + UEFI + boot crash

I have a server in RAID 1 with Ubuntu 14.04 LTS. Because of UEFI I could not install boot in raid so I left the boot on one of the hard drive. The problem I have is that the HDD drive where the ...
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Cache a (non-root) hdd which already has data on it with bcache - possible?

Could not find any recent info on this subject, so here goes! I have a small home server with 2 disks: SSD (120 gb), formatted as /ext4 which has an Ubuntu Server 15.10 install (including /home, ...