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.

learn more… | top users | synonyms

1
vote
0answers
2k views

Recovering from RAID5 with 2 failed drives, only one of them really dead

I have (had?) a RAID5 with 3 devices. One of them died, and after some days I experienced that the RAID stopped at all. However, I could restart it without experiencing any problems, but it stopped ...
0
votes
0answers
16 views

Install Linux on SSD and have HDD RAID5

I'm trying to find a solution, but it seems that no one has specifically had my problem. I'm trying to install Linux on an SSD and attach a RAID5 setup so that I have a secure home networked server. ...
0
votes
0answers
15 views

Installing Ubuntu Server on Raid 1: FakeRAID

I am installing Ubuntu Server 14.04.2 - amd64 in RAID 1 on my system with the following specs. SPECIFICATIONS: ASUS H97M-E 4GB 1600MHz RAM i3-4160 2 x 3TB Toshiba However, I failed ...
0
votes
0answers
14 views

How to backup the full system at runtime once a day

I would like to backup my 'server' running Ubuntu 14.04 every day at around 04:00. It needs to suspend after the backup has completed (I've got my script for this, but the software needs to have a ...
0
votes
0answers
16 views

Power Failure on Software RAID 10: is automatic resync enough?

I had a power failure on a server (Ubuntu 12.04.3 LTS ) with a raid 10 array. When I restored the power, in dmesg there was the message: md/raid1:md1: not clean -- starting background reconstruction ...
0
votes
0answers
12 views

Failed to load COM32 file menu.c32 - existing install

I've been trying to get one of our servers online since Friday. This server became unresponsive Friday and after running diagnostics on it (DL380 G9), I found nothing wrong with it. This server was ...
0
votes
0answers
146 views

How to Install Ubuntu 16.04 with RAID by default?

I have many HDDs which I would like use for making RAID. The installation process does not ask about it. There has been a sequence of data lost now in my systems because of various hardware/software ...
0
votes
0answers
57 views

unable to mkfs.btrfs ERROR: unable to open /dev/sdc: Device or resource busy

I have an old Dell PowerEdge 1950 with a LSA SAS card connecting three hard drives. I am running Ubuntu 16.04 server. When I run the following command: sudo mkfs.btrfs -d raid6 -f /dev/sdc /dev/sdd ...
0
votes
0answers
30 views
+100

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 ...
0
votes
0answers
18 views

Migrating W7 file server to ubuntu server 14.04

About 3 years ago a built a file server with a LSI MegaRAID 9280-24i4e hardware raid controller along with AMD Phenom II x4 cpu, 8GB of RAM and the OS that I chose was W7 and is installed on separate ...
0
votes
0answers
35 views

mdadm monitoring script after boot

the mdadm monitoring program is not working after boot. When i kill the process afterwards and run mdadm --monitor --scan again, everything is ok and the script runs on failures. Here ist my ...
0
votes
0answers
148 views

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 ...
0
votes
0answers
231 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 ...
0
votes
0answers
32 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 ...
0
votes
0answers
14 views

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 ...
0
votes
0answers
21 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 ...
0
votes
0answers
31 views

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 ...
0
votes
0answers
40 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 ...
0
votes
0answers
22 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 ...
0
votes
0answers
25 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 ...
0
votes
0answers
59 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..... ...
0
votes
0answers
24 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 ...
0
votes
0answers
10 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 ...
0
votes
0answers
32 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 ...
0
votes
0answers
24 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 ...
0
votes
0answers
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 ...
0
votes
0answers
38 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 ...
0
votes
0answers
54 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 ...
0
votes
0answers
71 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 ...
0
votes
0answers
24 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 ...
0
votes
0answers
30 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 ...
0
votes
0answers
48 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: ...
0
votes
0answers
10 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 ...
0
votes
0answers
10 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 ...
0
votes
0answers
26 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 ...
0
votes
0answers
14 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 ...
0
votes
0answers
26 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? ...
0
votes
0answers
27 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. ...
0
votes
0answers
16 views

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 ...
0
votes
0answers
20 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 ...
0
votes
0answers
6 views

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?
0
votes
0answers
58 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. ...
0
votes
0answers
44 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 ...
0
votes
0answers
34 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?
0
votes
0answers
32 views

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..
0
votes
0answers
52 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 ...
0
votes
0answers
33 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 ...
0
votes
0answers
42 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. ...
0
votes
0answers
28 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, ...
0
votes
0answers
20 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) ...