a utility to administrate Linux Software RAID devices

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Software RAID disapears after rebooting

I'm currently trying to setup a media server and I'm having issues with my software RAID. It seems like once I reboot the server the RAID doesn't get assembled despite there being an entry in the ...
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6 views

How to remove erroneous busy flag in mdadm

I have a system that I'm trying to configure and update to Ubuntu 14.04 LTS. I have a pair of drives which were previously the boot system. There are four RAID-1 sets: sda1 and sdb1, sda2 and sdb2, ...
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8 views

RAID Array Check

I just created a RAID using the command below sudo mdadm --create /dev/md0 --level=linear --raid-devices=5 /dev/sda /dev/sdb /dev/sdd /dev/sde /dev/sdf Now how do I check its working, and is there ...
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21 views

New Server - Need Backup Strategy Assistance

I previously had an Ubuntu 12.04 LTS server that I was running off of a single 2 TB hard drive. I had also installed CrashPlan on it and was backing up some data from it to the cloud (including the ...
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10 views

Unable to boot after replacing faulty mdraid1 disk

My server has 2 RAID-1 disk configured trough mdraid. A couple of months ago, one of the disks died, so I replaced it. After booting, Ubuntu took some to time to (which I presume was) copy everything ...
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25 views

Ubuntu 14 Raid not booting

i'm having issues for booting my Ubuntu 14.04 Server. I have two discs 320GB. I upgraded the disks from two 160GB and everything was working ok. Those disks were one IDE and the other SATA. Now both ...
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1answer
43 views

Why can I no longer (un)install packages via apt-get after doing a partial dist-upgrade?

I (stupidly) ran sudo apt-get dist-upgrade, which partially succeeded, but now I get output similar to this every time I try to (un)install a package: Here, for instance, is the output of sudo ...
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10 views

Mdadm slow raid6 creation

Currently I am creating raid 6 on 4 4TB hdds. When I use the command "cat /proc/mdstat" The returning info tells me I'm 57.9% with 26516.7 min speed 1032K/sec That seems like a really long time. ...
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18 views

Raid 6 mdadm creation error

I am trying to create a 4 drive raid 6 with mdadm in Ubuntu. The command I am using is sudo mdadm --create /dev/md0 --level=6 --raid-devices=4 /dev/sdb /dev/sdc /dev/sdd /dev/sde the error I am ...
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7 views

wd mybook world edition. mdadm package

After cleaning the disk I want to put new firmware on the disk. This has to be done according to different tutorials with Ubuntu. So this is completely new for me as a normal windows user. In the ...
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12 views

How could I set raid1 members to be offline temporary, to remain ready for use?

I have home server that is unused most of the time. So I wish to let spinning discs in it to go sleep. I gave up trying to stop rootfs writes waking up all drives permanently, so there is SSD disc for ...
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45 views

Intel RST Raid 0 ntfs mount from damaged disk

a friend of mine had an RAID 0 Array of two 500GB HDDs (Windows - NTFS - Dell preinstalled) and one seems to have an bad sector. So i started the PC from Ubuntu Live Disk (15.04) and tried to assemble ...
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46 views

Remove disk from mdadm array, Raid 0

I have a 2 disk mdadm RAID 0 volume, 4TB total, created in Ubuntu 14.04 server. The volume is less than half full and I'm looking to unraid the disks, keeping the data so that I can use one of the ...
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20 views

costum grub2 menuentry for mdadm lvm partition

I want to set a new entry in /etc/grub.d/40_costum to boot from a mdadm/lvm partition. I know how to do it with standard mbr/gpt partition like (hd0,1)/vmlinuz. How do I use raid1 and lvm grub2 ...
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22 views

mdadm build legacy array on boot

I have RAID0 that was built using windows dynamic disk. I've read that this is a legacy array and can be assembled using build in mdadm. I've gotten the array to build and mount using the following ...
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42 views

re-assemble out-of-date raid5?

I need help with my raid5 after it crashed through bad sectors. Previously I could re-assemble it with # mdadm --assemble --force -v /dev/md0 /dev/sde1 /dev/sdf1 /dev/sdg1 /dev/sdh1 /dev/sdi1 but ...
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28 views

RAID1 /dev/md0 showing up as /dev/md126 after reboot

I've already configured the file: /etc/mdadm/mdadm.conf with the outcome of : mdadm --detail --scan ARRAY /dev/md0 metadata=1.2 name=compute2:0 UUID=4e0dd53b:c29a881a:795286f7:a649ff4a ARRAY ...
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58 views

Rebuilding a RAID 1 array on a production server (Ubuntu 12.04.2 LTS)

I manage a production server which has a RAID 1 array with two identical hard drives. Apologies in advance, I've read many threads on this but due to the critical nature of the server, it will save ...
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21 views

RAID 1 disk from old server not recognized when taken off to a new machine

I had an old Ubuntu server at home, with two 1TB HDD in RAID1 configuration. I stored a lot of my works and stuff there, then eventually stopped using the server and let it get the dust for some time. ...
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58 views

Slow raid5 resync with WD Green drives [closed]

The Question Why is my initial resync so slow? Initially cat /proc/mdstat reported ~ 30000K/sec. I then increased /sys/block/md0/md/stripe_cache_size from 256 to 16384. That increased the speed to ...
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73 views

Rebuild a vaporized dmraid array using mdadm

Executive Summary While upgrading from Utopic to Vivid, my system removed dmraid, which I was using as the RAID controller for the array that I booted from. How can I rebuild the array using mdadm ...
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10 views

Anyone else having trouble accessing dynamic windows partitions from Ubuntu?

So, I have been trying to access my striped (software raid disk from Ubuntu) for at least six months. Now I know there are guides out there, but they are a bit hard to follow, at least for me. So I ...
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78 views

Can't mount RAID5 Array - Ubuntu Server 14.04

My server froze last night so I had to do a cold reboot, upon logging in I couldn't see my RAID5 Array mounted, I checked in Disk Utility to start the array but recieved this error message. Error ...
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30 views

is it possible to undo convertion from raid5 to raid6?

I converted my 3-disk RAID5 to RAID6 with : mdadm --grow /dev/md1 --level=6 --layout=preserve --force The change was immediate, (no rebuilding - there was no extra device, it was still 3 drives), ...
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27 views

Software RAID 1 is only showing half its expected capacity

While installing Ubuntu 14.10 I manually partitioned and set up software RAID 1. I have 4 HDDs, each 2 TB. On each drive I set 8 GB of swap space and made the rest ext4 and bootable (both as software ...
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45 views

RAID not assembling after reboot, throws “uuid not in config file” even though it is

I created a RAID5 array using 4 x 2.0Tb drives using the disks GUI. I used mdadm --detail --scan >> /etc/mdadm/mdadm.conf to save the configuration. I opened the mdadm.conf file and double ...
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28 views

Shouldn't have left SATA port empty when creating RAID?

I recently added an md RAID5 to one of my computers. The boot & root filesystems were on the motherboard's SATA port 1, which became /dev/sda. I left port 2 empty for future use (oops?!) and ...
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218 views

Ubuntu 14.04.2 LTS Boot fail after installing mdadm…“Incrementally starting RAID arrays…”

I am testing Ubuntu 14.04.2 LTS on Virtual Box. My ultimate goal is to build a real world RAID1 SAMBA home server. This is my first foray into a Linux distro. I have come a long way in the last 2 ...
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124 views

Software RAID and Ubuntu 14.04.2

I recently changed my Plex server from the headless Ubuntu Server 14.04.1 to Debian 7.8, during which stability issues sprouted up with my software RAID which I thought were tied to Debian. I ...
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How to start RAID array?

a few months ago two volumes in my Synology DiskStation 412+ NAS crashed and until now I am still unable to recover the data but I am motivated and won't give up. I am able to see the hard drives ...
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96 views

Software RAID with FakeRAID already enabled Ubuntu 14.10

Somewhat new to the Linux world, so I apologize if this seems a bit foggy: I dumped a bunch of drives into an old case with the goal of making a Ubuntu NAS. I enabled the on-board RAID option on my ...
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2answers
55 views

12TB storage, can someone help me? :)

I have thought about making a RAID 5 with 4 hard drives, 4TB each. There are files with few KB and other files with some GB. I want it to be as stable as possible. This will not be mounted as / or ...
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153 views

Upgrade 12.04->14.04 broke mdadm RAID10. Boot stops

Server was an Ubuntu 12.04 x64 and was running just fine. All four drives in server are SATA spin-drives. /dev/md0 - swap RAID10: sda1, sdb1, sdc1, sdd1 /dev/md1 - root RAID10: sda2, sdb2, sdc2, sdd2 ...
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196 views

Raid Drive Won't Assemble

I had a server with Raid 5, and I wanted to wipe everything and do Raid 10. I deleted the raid 5 as best I could, zeroing superblocks, removing it from fstab, etc. And I created the raid 10. Now, I ...
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68 views

failed/degraded raid5 array recovery

First, thank you for your time and effort with helping to recover this raid array. I have a personal raid 5 array that is in rough shape. The failed array has eight 2 TB drives that were built up ...
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169 views

How to install Ubuntu Server 14.10 on an existing IMSM container (mdadm) of a machine that does not support the EFI specification?

How can I install Unbuntu server (14.04LTS or 14.10) on an existing IMSM container (using Intel's RST technology) on a machine that does not support the EFI specification? This is actually a business ...
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279 views

Fakeraid in Ubuntu 14.04 wont auto assemble on boot

I'm trying to setup a 4TB raid 1 using fakeraid (intel matrix storage manager) as secondary storage. I'm able to assemble the raid manually using mdadm with the following commands: sudo mdadm ...
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73 views

Going from a single 3TB disk to a 4-disk 6TB RAID10

I have a 3TB standalone disk (EXT4 in a 4-bay eSATA box) that I would like to integrate into a RAID10 array by adding 3 more 3TB disks. I'm hoping to do this nondestructively, as it would take ...
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48 views

Ubuntu 12.04 failed to boot in recovery mode with Degraded RAID1

I have Ubuntu 12.04 LTS installed in RAID1. Suddenly the system failed to boot (using Ubuntu with linux 3.2.0-45-generic Pae) with an error message There appears to be one or more degraded RAID ...
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49 views

How do I move several LVM VG's on a pair of software RAID5 arrays from one Ubuntu install to another?

I have two software RAID5 arrays with LVM sat on top. I'm moving from Ubuntu 12.04 on an old PATA drive to Ubuntu 14.04 on a new SATA drive. I have the basic system up and running but now I'd like to ...
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18 views

Mount points keep changing

I have a problem that is driving me insane. Every time I update the kernel, my mount points for all my internal and external HDDs change. Now it is happening each time I restart my server. This ...
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712 views

How to configure RAID + 2 LVM volumes via preseed?

Internally, we use Ubuntu (14.04 Trusty) on our workstations, and until now we've done all of our builds by hand, including the creation of RAID/LVM/LUKS-encrypted volumes. This doesn't scale, and ...
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71 views

MDADM: 3-drive RAID5 won't assemble (event count off by 2)

I just upgraded from 12.04 LTS to 14.04 LTS and when i tried to fire up my RAID it will not assemble... even using --force won't help, which is odd because yes the event counts are off but only by ...
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38 views

Installation on 3 HD setup: mdadm is missing

I have an SSD (sda) and 2 HDs (sdb,sdc). My target is to install Ubuntu on the SSD and setup a RAID0 over the 2 HD. I manually installed mdadm and created the md0 device and created also the ...
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47 views

Reinstall ubuntu from scratch while keeping mdadm raid

So I have been stuck on 11.10 for fear of doing a dist upgrade and breaking everything trying to go up multiple versions. It has come a time that I finally should move up to at least 14.04 and looking ...
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178 views

Setup FakeRaid Raid1 for data only for Ubuntu 14.10 and Windows 7

I want to create a FakeRaid RAID1 array of two hdd's that are being used only for data, no OS's on them. My OS's are Ubuntu 14.10 and Windows 7 which are each on seperate hdd's. Almost all of the ...
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124 views

Mdadm Raid 5 Array with 2 Failed Drives

My setup is as follows /dev/sdb/ /dev/sdc/ /dev/sdd/ /dev/sdf/ I have the following 4 1.5TB drives in a mdadm raid 5 array. One of the disks (sdb) died on me leading the array to start up running ...
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130 views

Rebuild Windows RAID 0 for permanent use in Ubuntu 14.04

My old PC (Core i7 920, Asus P6T-SE, 6GB RAM) recently suffered a motherboard hardware fault. The 2TB RAID 0 array containing the Windows installation and mostly media library was no longer ...
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33 views

RAID5 … TYPE=SWAP

I have been looking for help but so far couldn't find. Have a computer with 4x500gb and 1x60gb. The hdd of 60gb it's where I have my OS. Recently I had a problem with the hdd and I had to reinstall ...
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72 views

mdadm Raid crash help

A buddy of mine, has Iomega NAS with 4 drives. The raid on it has crashed. So I'm trying to see if I can the the Raid back up - and copy the data from it. I'm a bit stuck, and hoping that someone here ...