a utility to administrate Linux Software RAID devices
1
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0answers
160 views
Ubuntu Server 12.10 -> 13.04 Upgrade & MDADM Raid Arrary
Now that 13.04 is out - i am looking to upgrade my home server (test rig) to have a play. Just wondering what effect running
do-release-upgrade
Would have on my MDADM raid array? Would it survive ...
0
votes
1answer
43 views
Need to reboot twice when Ubuntu 12.04.1 mdadm RAID1 degraded
I'm testing mdadm RAID1.
I'm using two HDD.
Created / (/dev/md0 with /dev/sda1 and /dev/sdb1) and
swap (/dev/md1 with /dev/sda5 and /dev/sdb5)
After OS installed. I removed one HDD and reboot the ...
0
votes
1answer
79 views
RAID array: cannot access files on one partition, getting Input/output error
I'm hitting an access error with part of a raid array and need help in troubleshooting this.
History: Several raid partitions live on 4 disks. Four days ago some ticking noises were heard from the ...
0
votes
0answers
28 views
Recover a software raid setup set up in 12.04 that's been removed since clean install
I installed 12.04 from the alternative install CD last year, I ungraded to 12.10 no problem and the system ran fine for 7 months. I originally setup two HDD's in a software raiding using the ...
2
votes
0answers
20 views
I grew an array with mdadm but I can't see the progress?
Today I added a 5th drive in my array, I did the following:
mdadm --add /dev/md0 /dev/sdf1
My drive was added as a spare, I then did:
mdadm --grow /dev/md0 --raid-devices=5
But when I want to ...
0
votes
0answers
67 views
How to set up RAID1 on installed Ubuntu 12.04
I have two slightly different 1 TB hard drives and I want to create a RAID1.
I have spent last 5 hours trying to archive the same effect on virtual machine, because I want to test it out before ...
1
vote
0answers
29 views
MD arrays mounted incorrectly (no rwd)
I've got various RAID 1 & 0 (MDADM) arrays mounted in /media/ via fstab but I'm coming into trouble creating/deleting files from some of these volumes from the GUI and programs, it's as if they ...
2
votes
0answers
81 views
how long should it take to create a raid 10 with 4 3TB disks?
I am trying to create a raid 10 with four 3TB disks on ubuntu 12.10 with mdadm. I was wondering how long should it take to create the raid. Right now when I look at /proc/mdstat it is showing 19107 ...
1
vote
0answers
77 views
Is there a fix for md raid failure on 12.04
I've got a system that ran cleanly on Ubuntu 10.04 LTS.
Upgrading to 12.04 LTS / 12.04.1 LTS / 12.04.2 LTS has been unpleasant and unsuccessful.
Install goes cleanly and I have installed as follows:
...
2
votes
0answers
106 views
MD + LUKS + LVM will not cleanly shutdown
My setup is currently raid1 + luks on each md partition and lvm on top to stripe between the arrays. There is only one volume group with one logical volume currently.
sdc ...
1
vote
0answers
139 views
broken raid 1 array - I think I messed up
I have a big problem with my raid setup. So if anyone is interested, please help...
I have a raid1 setup with 2 hdd. One day I saw in the SMART data of one on the disks that it had some bad sectors, ...
1
vote
0answers
45 views
Is it possible to setup RAID with mdadm before installing Ubuntu
What we want is to configure our RAID array before installing the OS so the OS will be mirrored and safe from any possible failures. Is this possible. I read that a lot of people normally load the OS ...
3
votes
4answers
137 views
Convert running system to RAID 5
I have a machine with 3 identical disks. I performed a clean installation of ubuntu 12.10 on one disk.
How can I convert the running system to boot off a (software) raid5 comprised of all three disks ...
2
votes
3answers
154 views
Problem with LVM over mdadm with NTFS. Is it possible?
I am a bit of a linux newbie, and i have come across an error that i dont really know how to troubleshoot.
my idea is to cram 6TiB drives into a box, make three sets of raid1, then stretch a logical ...
1
vote
0answers
21 views
How can I convert a running system to boot from RAID 5
I have a machine with 3 identical disks. I performed a clean installation of 12.10 on one disk.
How can I convert the running system to boot off a raid5 comprised of all three disks (one of these is ...
1
vote
1answer
51 views
RAID (mdadm) - Flags necessary?
As I understand it, it's best practice to set the drive flags as "raid" before adding them to a mdadm raid array. Okay fine, but I also heard people say that they didn't do this and mdadm worked fine. ...
3
votes
1answer
628 views
Can I cache an mdadm raid with an ssd?
I have a 1TB array set up in raid 1 using mdadm on Ubuntu 8, to store mission-critical files. I'd like to speed up read/write, especially for large files by caching to an SSD. Is this possible? Does ...
2
votes
1answer
219 views
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 ...
0
votes
1answer
65 views
RAID (mdadm) - File system relevant prior to building the array?
In the event I want to set up a RAID 1 mirror utilizing mdadm, is it needed to have a file system on the drives first? Reason I ask is my desktop which has RAID 1 (built from the alternate install CD) ...
3
votes
1answer
1k views
Software raid - mdadm - re-find my array
Description
Today I plugged in another hard drive and unplugged my raid drives to ensure when I wiped the drive, I would not accidentally pick the wrong drives.
Now that I have re-plugged in my ...
1
vote
0answers
70 views
Is it possible to perform a clean install without losing software RAID 5 data?
I have a machine running 12.10 (after upgrade from 12.04 which was a clean install).
It has 3 1TB drives running software RAID 5 (each drive has a main,and swap partition. 3x main partitions are ...
0
votes
0answers
47 views
Adding Additional RAID Array for Storage in Ubuntu 11.10 x64 Server
Haven't run into this situation before but it seems simple enough. Looking for advice/guidance on the following issue.
I have an Ubuntu 11.10 64-bit server that is configured with 2 identical hard ...
1
vote
0answers
68 views
How to prevent Ubuntu from assembling degraded RAID on boot?
I have RAID 5 on 3 hard disks, in which one of them is external on USB 3. I'm facing problems on boot because sometimes the external drive isn't detected or maybe isn't ready soon enough, and the RAID ...
1
vote
1answer
342 views
Ubuntu 12.04 hangs on boot, won't mount mdadm array
I have two problems that I believe are related. One has been happening for years through multiple versions of Ubuntu (at least from 11.10 to 12.04), the other is new since I update the kernel.
First ...
1
vote
1answer
375 views
How do I fix “mdadm: /dev/sdc1 not large enough to join array” for three identical discs?
After uppgrading to Ubuntu 12.04 LTS in my server grub started to complain and give errors about my raid array, everything still seems to be working but it is a bit unnerving to have grub giving ...
0
votes
2answers
185 views
Would Mdadm be faster than fake raid adapter?
I just bought myself 2 x 3tb wd red drives and a startech 4 port raid card . Unfortunately, I have a very, very strong suspicion that this is a 'fake-raid' card as it is not from any of the main ...
0
votes
1answer
750 views
How to make GRUB2 detect and boot Ubuntu on a RAID 1?
grub 2 is unable to detect /dev/md1 which is a raid 1 drive on my computer.
When I press c in grub menu and run ls I get a list of all the drives but don't see md1 for booting Ubuntu which is on ...
2
votes
0answers
198 views
New computer, same RAID. MDADM won't assemble
Ubuntu 12.04 64. Hardware failure (motherboard) led me to build a new machine, and I took the opportunity to do a fresh install of Ubuntu (first one was a learning experience). I moved the raid disks ...
3
votes
1answer
88 views
RAID 5 reassemble stating wrong homehost?
So I went from a degraded RAID, to a dissasembled RAID, to now trying to reassemble it. Im getting a weird message when trying to --assemble the RAID. I have 6 drives, so /dev/sd[a-f]1. When trying to ...
1
vote
0answers
45 views
How to I add a drive to a system that already has a software raid on it
I currently have a Ubuntu 12.04 server booting off a USB stick and running a raid 0 configuration with 2x 2TB drives.
I would now like to add an additional stand alone drive (not as part of the ...
0
votes
0answers
74 views
Device cannot be added on software-raid-1 array on Ubuntu 12.04
Unfortunately all tutorials I have found online until now on how to setup software-raid-1 are outdated on ubuntu 12.04
My target is to setup it on a system with a secondary disk drive that is already ...
0
votes
1answer
118 views
Ubuntu 10.2 to Ubuntu 12.04 LTS migration with mdadm (software RAID)
I am very hesitant to push the "Upgrade" button that I see in my Software Updates program.
The reason for this is the fact that my server is configured as Backup server with software raid.
Is there ...
1
vote
0answers
314 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 ...
1
vote
2answers
1k views
How can I create one logical volume over two disks using LVM?
Hi. I've got a working Ubuntu 12.04 server, which is going to serve as media server. I've added two disks of size 3TB to put my data on, and I wish to combine these as one 6TB logical volume which I ...
0
votes
2answers
1k views
Add two new HDD in Raid 1
I just made a fresh install of Ubuntu 12.10 on a new SSD (/dev/sda). Now I would like to add two 1TB drives (/dev/sdb /dev/sdc) in RAID 1 but I'm pretty clueless on how to do it.
This is what I came ...
0
votes
0answers
19 views
300gigs already used on just created raid 5 volume [duplicate]
Possible Duplicate:
New ext4 partition and used space
I was just wondering if this is normal. Why is 45G already used when I just created the volume and haven't put anything on it yet? What ...
1
vote
0answers
809 views
ubuntu 12.10: raid 5 array degraded on every boot [closed]
I'm running ubuntu 12.10. I've set up raid5 using 3 HDDs: /dev/sda, /dev/sdb, and /dev/sdc. However on every boot I get this screen:
Which says
raid level 5 active with 2 out of 3 devices, ...
1
vote
0answers
122 views
How do I reinstall ubuntu without losing my software raid 5?
I want to change to do a fresh install without keeping my data on my primary hard drive, but I also have 4 2TB Drives in a software RAID 5 array that I created with mdadm and I don't want to lose ...
2
votes
2answers
639 views
Ubuntu Server 12.04, MDADM device number suddenly changes?
I'm facing a really annoying bug, I have set up a Software RAID1 with mdadm, and the setup went just ok with this results
/dev/md/lucas.mgscreativa.com.ar:0
I have also configured mdadm.conf ...
4
votes
1answer
3k views
Why is my RAID /dev/md1 showing up as /dev/md126? Is mdadm.conf being ignored?
I created a RAID with:
sudo mdadm --create --verbose /dev/md1 --level=mirror --raid-devices=2 /dev/sdb1 /dev/sdc1
sudo mdadm --create --verbose /dev/md2 --level=mirror --raid-devices=2 /dev/sdb2 ...
1
vote
0answers
84 views
Can't start system due to mdadm failing
I used to have a 5-disk RAID5 partition, all working very well. I have then decided to add 3 more disks on it, totaling 8 equal disks. I've opened Webmin and just asked to add the disks.
Then I've ...
0
votes
0answers
84 views
Migrate linux from software RAID (mdx) to hardware RAID
Current situation:
Dell PowerEdge T300 server (SAS6/iR controller) (RAID 0/1)
Ubuntu 10.04 LTS
server installed on software raid (2x500GB) + LVM. Currently used
space 25GB.
Questions:
How to ...
0
votes
0answers
100 views
Raid 5 harddrive failed but smart says its fine. Should I replace?
I have being running on three 2TB hard drives in software raid for a little under a year how under Ubuntu Server.
After restarting my computer mdadm would not allow a boot because the raid was ...
2
votes
2answers
481 views
Removing mdadm array and converting to regular disks while preserving data
I have a 6 disk (2TB each) mdadm RAID 5 volume created in Ubuntu 12.04 Server. However, I'm moving to a different solution and want to "unraid" my disks but keep the data. Only 50% is in use.
From ...
1
vote
1answer
2k views
mdadm fails after 10.04 -> 12.04 upgrade
I just upgraded my Ubuntu server (in the role of NAS) from 10.04 to 12.04.
Since both are LTS versions I didn't expect any issues and... didn't make any backups. My bad.
After upgrade, the server ...
3
votes
1answer
195 views
OS drive failure and RAID5 mdadm question
I'm fairly new to Ubuntu but I was able to setup my server with RAID5. The OS resides on a separate drive and there are 3 drives in my array.
The problem is that I had to reinstall my OS on a new ...
0
votes
1answer
791 views
MDADM Raid Drive rebuild each reboot
So I have been posting a lot about a RAID build with MDADM and Ubuntu (sorry about that). Im just not understanding whats going on with my setup.
I have a RAID-5 setup, and followed this guide ...
0
votes
0answers
256 views
LUKS no longer accepts my my passphrase
I created a 4 drive RAID5 setup using mdadm and upgrading from 2TB drives to the new Hitachi 7200RPM 4TB drives. I can initially open my luks partition, but later can no longer access it.
I can no ...
0
votes
1answer
1k views
MDADM Config file
So I've asked a few similiar questions before, but my RAID continues to break. Im not sure whats going on. I really need to redo the whole thing.
Right now, my /dev/md127 is "inactive"
In the steps ...
0
votes
0answers
116 views
How do I use mdadm to resize a 2-disk RAID0 array?
I have 2x 2TB HD (sda+b)
I each drive = aprx 50% "Volume* Raid)
Each Partition unworkable via Gparted. (as i suspected, too easy)
Can i extend those partitions to fill the drive?.(perhaps via Livecd)
