Ask Ubuntu Stack Exchange
Ask Ubuntu Stack Exchange

Questions tagged [raid]

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.

1521 questions
95
votes
5 answers

How can I quickly copy a GPT partition scheme from one hard drive to another?

On a non GPT partition table I can do sfdisk -d /dev/sda | sfdisk /dev/sdb. But sfdisk doesn't support GPT partition tables. What can I use instead? I'm looking for a one or two command solution, not just using GNU parted to output the partition…
Kris Harper
  • 13,397
  • 12
  • 56
  • 73
44
votes
4 answers

How do I install GRUB on a RAID system installation?

I'm trying to setup and install Ubuntu on a RAID 1 setup. I have two disks, sdb and sdc. I've been following this guide https://help.ubuntu.com/community/Installation/SoftwareRAID which more or less works for getting everything set up and Ubuntu…
Kris Harper
  • 13,397
  • 12
  • 56
  • 73
39
votes
1 answer

Workaround to Install Ubuntu 20.04 with Intel RST systems

I tried to install Ubuntu 20.04 in my Dell G5 which has 2 drives. One with Windows 10 on it (256 GB) and another one with 1 TB capacity. I shrunk the volume of 1 TB by 150 GB and tried to install there. But Ubuntu installer didn't allow me as I got…
SubinR
  • 723
  • 2
  • 9
  • 14
33
votes
3 answers

The initramfs will attempt to resume from /dev/dm-1

I'm setting up a new Ubuntu 18.04 server and have already played through one backup/restore loop. So the entire system has been restored from backup with a fresh RAID and LVM volumes. Now recently, unattended-upgrades has reported this: Processing…
ygoe
  • 938
  • 1
  • 11
  • 22
29
votes
1 answer

Install dual boot ubuntu with windows 10 and RAID on

I have a dell XP’s 9560 laptop and I want to install an Ubuntu distribution alongside windows 10. I tried a lot so far to install it but I can’t see any partitions. I figured out that the problem is that I have raid on from Sata configuration from…
Dorin
  • 393
  • 1
  • 3
  • 7
28
votes
6 answers

How do I rename an mdadm raid array?

For some reason, when I try to rename an mdadm raid array to a textual name, the change doesn't take. I tried the advice from this serverfault question, but to no avail. ~$ mdadm --version mdadm - v3.1.4 - 31st August 2010 ~$ sudo mdadm --detail…
Zaz
  • 1,049
  • 2
  • 12
  • 18
27
votes
2 answers

How to install Ubuntu 14.04/16.04 64-bit with a dual-boot RAID 1 partition on an UEFI/GPT system?

Update: Question and answer below also applies to Ubuntu 16.04 I have a computer with dual SSDs and Win (7) pre-installed on another disk. The pre-installation uses (U)EFI/GPT boot. I want to install Ubuntu 14.04 64-bit desktop on a RAID1 root…
Niclas Börlin
  • 1,946
  • 3
  • 20
  • 32
26
votes
4 answers

How can I use Kernel 3.19 in 14.04 now?

So I'm rebuilding my storage server. For stability, I want to use Ubuntu server 14.04 LTS as the OS. However, I'm planning to use Btrfs with RAID 5, and this has been greatly improved in kernel 3.19. So I want to use that kernel with 14.04. I know…
Degenerate
  • 363
  • 1
  • 3
  • 6
20
votes
4 answers

How do I align my partition table properly?

I am in the process of building my first RAID5 array. I've used mdadm to create the following set up: root@bondigas:~# mdadm --detail /dev/md1 /dev/md1: Version : 00.90 Creation Time : Wed Oct 20 20:00:41 2010 Raid Level : raid5 …
Jorge Castro
  • 70,934
  • 124
  • 466
  • 653
19
votes
3 answers

How to Install Ubuntu 14.04 with RAID 1 using desktop installer?

Many people claim that it is impossible to install Ubuntu onto RAID 1 with the Desktop CD. Is this really true? If not, how can it be done?
Sunday
  • 773
  • 1
  • 6
  • 13
17
votes
2 answers

RAID (mdadm) - What happens if drives are mismatched in size?

Question 1 - Before you answer with "it just takes the smaller disk", hear me out quick. My 3TB WD Reds come out to be 3001 GB in size. Let's say I set up a mirror via mdadm for sdb1 and sdc1 which span 100% of the drive. But suddenly, one of the…
JaSauders
  • 557
  • 1
  • 8
  • 17
16
votes
4 answers

How to enable degraded RAID1 boot in 16.04LTS?

In previous ubuntu versions, adding BOOT_DEGRADED=true to /etc/initramfs-tools/conf.d/mdadm allowed the system to automatically boot when the root filesystem is on a degraded array. This no longer seems to work in 16.04 LTS. The documentation…
vdyvp
  • 161
  • 1
  • 1
  • 5
16
votes
6 answers

How do I know what physical drives/partitions are behind my /dev/mapper/isw_dghbbcaabe_RAID_Volume11?

This is a just upgraded Ubuntu 10.04.1 LTS machine. The /dev/mapper/isw_dghbbcaabe_RAID_Volume11 is "new" to the upgrade but I don't know what physical drives/partitions are included in the "device". I have tried: root@barabasi:~# blkid …
Sebas
  • 163
  • 1
  • 1
  • 5
16
votes
1 answer

How to access MD RAID via Live CD?

We are currently trying to run access the data on a server running a HP Ml110 G5 SATA raid controller, using the latest Ubuntu Live CD. We need to delete a few files to let the server boot into Windows but are unable to mount the partitions. We can…
Neil
16
votes
8 answers

How can I physically identify a single drive in a RAID array?

I have an external drive bay with 4 eSATA disks in it. My system has a 4-port eSATA card, as well as a pair of internal hardware RAID1 drives. The external drives are in software RAID1 pairs as /dev/md0 and /dev/md1. Both have been configured as LVM…
Kees Cook
  • 17,243
  • 9
  • 68
  • 96
1
2 3
…
99 100