a utility to administrate Linux Software RAID devices

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Raid5 can't start degraded, dropping to shell

Already posted about this here: http://ubuntuforums.org/showthread.php?t=2219141 but thought I could post here as well, in hopes that it would increase my chances of a solution :) I've been running ...
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1answer
125 views

Install Ubuntu Desktop on Software RAID 1 (mirror) with encryption

I used to use Ubuntu 12.04 Alternate installer to setup my old RAID1 + encryption system. With the new LTS 14.04 (beta 2) I found the alternate installer missing which complicates installation on a ...
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53 views

Using sw raid (level 1) created with 10.04 in new install of 14.04 [closed]

before I start installing a fresh Trusty system on my computer (when Xubuntu Trusty comes out) I need to sort out some questions... With my current system (still at 10.04) I have a software raid ...
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10 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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60 views

Change initramfs script

I made RAID 0 by mdadm'ing partition located on dmraid VIA VT6421 and Western Digital hdd. Installed Ubuntu on that RAID. Now, when I boot, I get (initramfs) ash prompt. There, I have to write mdadm ...
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22 views

“Device not found or ignored” when creating physical volume with bcache

I'm attempting to create an LVM volume on a bcache device, but getting "device not found or recognized", despite lsblk clearly showing the device, and bcache state showing "clean". OS is Ubuntu 13.10 ...
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2answers
134 views

Why isn't md raid assembled after reboot?

I'm trying to get an Intel RAID setup. The problem I have is that after a reboot the raid is not available. These are the steps I go through to setup the Intel RAID using the mdadm command. I've ...
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42 views

No more Diskspace after disk change, mdadm / Raid6

I had a Raid6 with 2TB disks, and have now replace all of them with 4TB disks. I pulled them out one at the time, after installing the new 4TB disk I added to /dev/md2 mdadm --manage /dev/md2 --add ...
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45 views

Need help proplery setting up raid5 (align then mount)

Trying to ¨start over¨ and following this guide: http://dennisfleurbaaij.blogspot.com/2013/01/setting-up-linux-mdadm-raid-array-with.html I used fdisk and mdadm to create a raid 5, and I believe I ...
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44 views

mdadm array disappeared

I was moving my mdadm array from my old machine to a new one. As the new one was not able to see it, I tried to put it back, but I seem to have lost all superblocks. Only 1 drive has a partition. ...
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51 views

Software RAID 5 Disk Failure

I'm going to need some expert help - free beer/coffee to anyone who get's me on my way! My System I'm running Ubuntu 11.10 with a 3 disk software RAID 5 configuration, with 3TB hard drives, in ext4 ...
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21 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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19 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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23 views

Cleanly shutdown on read-only root partition - cant sudo

My /dev/sda dropped out for some reason on my server box (12.04.4). This made Ubuntu remount it as RO which is fine but now I cannot shutdown the system cleanly. Is there any way to deal with this? ...
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31 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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27 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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1answer
55 views

Bash script fault creating mdadm array

I am working on a script to create md1 array, first to check if the array exist if not it will create it. I get command as command mdadm not found and a few others. The script wont run. ...
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1answer
51 views

How to check if last command succeeded and make that command auto accept prompts?

I am working a script to create a raid5 array. The question is how to put the command in a if (to see if the command succeeded), and when the script ask to continue creating array it will auto say ...
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1answer
124 views

Bash script to check if mdadm is installed if not it will install it

Working on a bash script which first will check if mdadm is installed, if not it will install it. This is my script but it's not working correctly. Hope someone can help me. if [ "$mdadm" = "mdadm" ...
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35 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 ...
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11 views

mdadm: SSD+HDD RAID 1 [duplicate]

How do I setup a RAID 1 on mdadm between a SSD and a HDD, without loosing SSD reading speed and with boosting write-speeds of the HDD.
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22 views

RAID setup for small application server?

I want to setup a small application server running 12.04, mostly running bioinformatics tools. The box has 16GB of RAM and 12 core and 6x2TB SATA disks. I need a system partition of, sat at least ...
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29 views

Cannot replace a faulty disk using mdadm raid1

I have a Software Raid 1 array that I build a couple years ago. One day, after I loss current, the array became corrupted. One the drive was corrupted so, I removed it from the array and rezeroed it. ...
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1answer
152 views

RAID 5 won't mount

I have a qnap NAS which is running a version of ubuntu and I'm not getting any help from their forum so I thought I'd ask my question here. I "had" 3 2TB HD's in a raid 5 configuration. When I got ...
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58 views

mdadm array: there is not enough space on the disk

I have this array of approx 6TB (ext4) and i am getting a disk space error. I only have a total of 800GB to copy to the shares I have created. I am using robocopy to copy this data from a windows ...
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81 views

Unable to mount RAID 5 array

Let me begin by saying I am a complete beginner using Ubuntu, but I'll try to give as much information as possible. I created a Raid 5 array and formatted it with mke2fs. I was able to mount the image ...
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81 views

Clone an Ubuntu machine with software RAID

I need to migrate my dedicated server to a new one: Both server are hosted remotely, I've no access to physical machines, only root ssh The old server is running Ubuntu server 13.10, ...
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81 views

mdadm /dev/md2 inactive superblocks

Using a WD world book that stopped working after power cycle. I can ssh into the machine and all disks report healthy so if I knew more about Linux I think this might be a quick fix. Figured I'd ...
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28 views

Beginner need help after shrink mistake

I have a RAID5 created with mdadm and over it I have created one LVM volume group with 3 logical volume on it. There is a few weeks I have shrink the larger logical volume to give more space to ...
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42 views

software raid resync does not work with new harddrive

After a harddrive failure, i tried to resync the existing software raid. I copied the partitionstructure sgdisk -R /dev/sdb /dev/sda sgdisk -G /dev/sdb And added the drive back to the volumes ...
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143 views

Mount RAID1 Drive via USB into a New PC/Laptop

I have two old 1TB hard drives that were in a RAID1 array (mdadm). They were last known to be working fine and the issue with the old PC is the mother board blew out. I now have a laptop with Ubuntu ...
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109 views

How Do I Get More Than 16TB Out Of EXT3?

I have an MDADM RAID 6 array that I just added a 20th disk to. It consists of 20 1TB drives. RAID Detail: $ sudo mdadm --detail /dev/md0 [sudo] password for : /dev/md0: Version : 00.90 ...
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77 views

Using “Sata Controller” to add extra ports with mdadm software raid to create a raid 5 array

Here is the set up.... Ubuntu 12 LTS, Plex.. ect.I am looking on setting up a raid 5 using 4 2tb disks to create 6tb of space with a fail safe. One thing I have had a thought about which I am unsure ...
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39 views

Change md array UUID on harddrive

I've had some trouble, yet again, with my mdadm array (raid 5). One disk popped out, then a few things went on to get to the point of hiring someone to helpfully fix the array. Now after all my paid ...
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1answer
57 views

what is the difference between installing raid form bios and from disk utility in installing system?

what is the difference in configuring raid in Idrak bios and configuring raid in installing Ubuntu or any other system?? is it faster in configuring raid from bios and more good performance and can i ...
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279 views

Recover Orphaned RAID 0 from Silicon Image controller with Linux Software RAID?

I had an old XP machine in Raid0, 2 x 120gb drives on a Sil3112 controller. The drives are intact (afaik) but the motherboard or P4 is toast. Id love to recover precious photos from the drive or dump ...
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79 views

Mdadm RAID array doesnt recognise harddisks at startup

I created 2 hardware raid 0 arrays of 1TB each. They are currently working fine. I've got those 2 arrays and a real 1tb hard-disk in a RAID1 array, which is 1 tb. The reason I'm doing this is because ...
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27 views

Unneeded RAID recovery

I have two software RAID 5s. Today when I turned on my server (after it was off for two weeks when I was on vacation), I got the message that the software RAID is degraded and was offered RAID ...
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1answer
145 views

Mdadm RAID 5 failed, 1 drive bad 1 good 2 working

Sorry if the title was a little confusing but I wanted to show a little info. So I went to turn my pc on and ended up with the nice screen of having a failed array. /dev/sdb1 and /dev/sde1 are within ...
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34 views

disk failed during reconstruction

Yesterday a disk failed in my mdadm RAID-5 array. I replaced the faulty disk and added it to the array. The reconstruction begins. When I woke up this morning I had a uncomforting mail about a disk ...
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101 views

WD MBWE II (White Strip Light) unable to access

I do not know if this is the right place to ask this question ... I hope someone here can help. I'm trying to retrieve data from a WD MBWE II (White Strip Light) 2TB (WD20000H2NC-00) NAS device. ...
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1answer
3k views

Ubuntu 13.10 software raid

I had already Ubuntu OS installed on my desktop PC, where the software RAID 5 is configured ( 3 partitions /, swap and home ). This system was upgraded from the 11.04 till 13.04, it was quite messy, ...
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2answers
536 views

mdadm automount

I have a system running ubuntu 13.10, booting from a 50GB SSD. Attached to the motherboard are also three 2TB disks. configured into a 4TB RAID array. After ubuntu boots, I can mount the RAD volume ...
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1answer
64 views

How to install software to OS on other disk?

Have installed 13.10 on a RAID1 array following this guide: http://www.michielovertoom.com/linux/ubuntu-software-raid/ Everything went fine, except for the last step where I'm supposed to install ...
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161 views

Raid 5 mdadm --grow drops performance, no increase in disk size

I've set up a Raid 5 system at home for the first time. I've added 3 disks into the pc, and parted them all in 1 partition of 8G, and 1 partition of the remaining 492G then I made 2 raid volumes with ...
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398 views

mdadm starts resync on every boot

Since a few days (and I'm positive it started shortly before I updated my server from 13.04->13.10) my mdadm is resyncing on every boot. In the syslog, I get the following output [ 0.809256] md: ...
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290 views

Problem with MDADM RAID5 after power failure, disk missing

I've been running my server with Ubuntu Server 12.10 for quite some time now and it's been up for about 260 days give or take. This morning we had a power outage which unfortunately did not only reset ...
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1answer
300 views

recovering raid5 (mdraid) after clean OS install (Ubuntu Server 12.04)

======== After having to reinstall the OS I am having trouble accessing data stored on a RAID5 group built on 8 HDDs using mdraid. Advice much appreciated! I have a DIY home NAS server built on ...
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1answer
106 views

Raid drives are missing filesystem

I recently had to do some troubleshooting with a RAID 5 on Ubuntu Server (a software raid). I ended up removing everything and start from scratch with 2 new drives. So I took out 2 out of 4 drives, ...
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129 views

Raid 0 recovery

I have been using raid0 with four disk over two years. But suddenly it started giving and error at logging Errors were found while checking the disk drive for / in order to solve this i booted the ...