a utility to administrate Linux Software RAID devices

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18 views

Why would simply adding options to a mount point in /etc/fstab change mount points for various hard disks?

I edited my /etc/fstab and simply added "noatime" to my ssd drive entry. That is all I did to the file. I then saved the file and immediately rebooted. The system then hung during boot because mdadm ...
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44 views

Installing Ubuntu 14.04.1 LTS with hardware RAID

I have been having some issues with trying to install Ubuntu off of a live usb. The system has a Intel hardware RAID controller and I wish to run my two HDDs in RAID 1. I have come across and issue ...
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1answer
39 views

What happens in bcache if the cache ssd dies?

I'm creating a NAS and I've been doing a lot of research on the different SSD caches. I have a 120gb ssd which is more than enough for the OS so I want to use most of it as a cache for the md raid5 ...
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44 views

Remove mdadm raid5 but no loosing data!

I have 4 disk with 3TB every one (4x3=12TB) I was searching to recover information to remove the raid5 without loosing data. But I found that post here So I followed the steps but my question is, ...
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1answer
30 views

How can I recover my RAID 5 array after removing 3 or 4 of 7 disks?

I'd like to undo what I've mistakenly done. From Disks I removed 4 of 7, 2 TB disks from the software RAID 5 array. I am unable to bootup and come to this: error: disk 'mduuid/long UUID number' ...
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2answers
54 views

Can I write data safely to a RAID-1 ARRAY while it is resyncing?

Will the files be in all drives on the array when the sync is complete? What if a disk fails while sync is in progress?
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1answer
59 views

Will a fresh installation of Ubuntu recognize two drives that have been in a RAID?

I have a computer with three hard drives - one is the boot drive and the other two are in RAID1. The RAID is software RAID created during the Ubuntu installation. If I reformat and reinstall Ubuntu on ...
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3answers
45 views

Serious RAID problem that panics system

System: Dual Xeon E5-2630 CPU, 32GB RAM, Primary disk is a SATA-III 512GB Crucial SSD OS: Xubuntu 14.04.1 I am having a serious problem with RAID on this new system and hope some of you can provide ...
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1answer
32 views

How to Create Virtual Block Devices

I want to create multiple virtual block devices like /dev/sda and then use them to create an md device for test purpose. I have mounted my root filesystem on /dev/sda1 and don't have extra space to ...
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103 views

How to add software RAID-1 to an existing non-RAID system?

I couldn't find any tutorials for converting a non-RAID system (Ubuntu 14.04 in my case) into a disk-level RAID-1 system after installing a second disk (/dev/sdb) Is the following correct? sgdisk ...
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37 views

Unable to uninstall/install apps do to mdadm

So I upgraded from 12.04 to 14.04 and I had a software raid 5 running. Since the upgrade my raid array seems fine? I can still access it and put files on it etc but when I run any apt-get install or ...
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105 views

LUKS on software RAID not mounting on boot

I am trying to setup an encrypted disk using LUKS on a software RAID that was setup using mdadm on 14.04.1 LTS (GNU/Linux 3.8.13.26 armv7l) (Odroid U3). The problem is that the LUKS container is not ...
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18 views

Mdadm:insufficient head-space for reshape on /dev/sdb1

I want to grow the space of RAID10, I have already added two discs to the RAID array, but when I do: sudo mdadm --grow /dev/md0 --raid-devices=6 It gives this message : Mdadm:insufficient ...
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70 views

Problems with RAID1 after 14.04.1 update, related to bad geometry: block count

I did some research but I can't quite point out how to resolve my problem. So I need to askubuntu. I setup my RAID some time ago, so I don't remember all the details, all I know is that is RAID1 and ...
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0answers
47 views

mdadm doesn't seem right

I watched a youtube video where a guy made a raid 1 with 2x 2 gb usb drives. I am using 2 x 3tb disks to have a raid 1 mirror. My concern is my sdb1 size=-1364702208K sdd1 size=-1364702208K. which is ...
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1answer
56 views

How can I ensure simple way RAID 1 is working?

I have formatted 2 large hdds and connected them to RAID with commands: mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sdb1 /dev/sdc1 mkfs.ext4 /dev/md0 mkdir /mnt/data mount /dev/md0 ...
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72 views

raid mdadm “active,resync” after reboot

I created a raid1 (Intel RST + Ubuntu Server 64Bit). I waited until the mdadm status of the raid changed to "clean". All worked fine. But I noticed that after every reboot, mdadm shows "active,resync ...
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71 views

How to fix RAID1 array by mdadm with script?

In system works two RAID1-arrays madadm. There is one reserve disk to change faulty disk. I need to write a script which will be monitoring disks and automatically fix degraded array. How do you ...
0
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1answer
181 views

mdadm raid1 boot error

I created a RAID with Intel-Rapid-Storage(RST) - containing 2 3TB HDDs. Then I installed Ubuntu Server 14.04.1 64Bit. Everything worked fine and then I did a reboot. Then I got the following error ...
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2answers
80 views

Move RAID 1 Array to new system

I am rebuilding my Ubuntu home server, but I want to preserve my two disks currently in Linux software RAID 1. My current config is: One 240GB HDD configured as OS Disk (Ubuntu 12.04 LTS) Two 3TB WD ...
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400 views

MDADM RAID1 Home Server System disk error: incrementally starting raid arrays mdadm: Create user root not found

I'm not sure what else to check. Everything below looks sane to me but the system hangs on boot. This is a home server with four disks crammed into a Dell OP620. Each pair of disks are assembled as ...
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32 views

Why do I see permanent disk activity on my software raid partition (/home)

I installed Ubutu 14.04 server with this partitioning: / on an SSD /var and swap on a single SATA drive /home on a software raid1 consisting of 2 SATA drives. I switched all partitions to noatime. ...
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2answers
603 views

Setting up RAID 1 on 14.04 with an existing drive

I have a currently installed Seagate ST3000DM001 (about 90% full) and a new Seagate ST3000DM001 (blank). I would like to setup RAID 1 without losing the data on my currently installed drive. If I ...
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1answer
226 views

Creating a RAID1 Array, “Disk doesn't contain a valid partition table”

I'm trying to create (two) software RAID1 arrays on two identical 4TB non-boot drives. I'm following advice from several forum posts but keep running into trouble. Here's what I've done so far: for ...
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195 views

How to make Intel fake RAID 0 volume appear on boot with Ubuntu 14.04 in a multi-boot environment?

I have a computer with a Gigabyte GA-Z97N-Gaming 5 mainboard, a 256 GB drive for booting and two 3 TB drives meant to use in a RAID 0 setup with both ext4 and NTFS partitions. We are planning running ...
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1answer
215 views

Ubuntu installed /home to visible RAID array, but can't find it on boot

I'm using the Desktop version of Ubuntu 14.04.1. I started up the liveCD, installed mdadm, and created a RAID 1 array on a 3 TB HD. I then restarted, went directly into the installation menu, and ...
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7 views

data distribution after adding additional disk in raid 5

"I had set up raid 5 by equal capacity with 3 hard disks in ubuntu 12.04 and I need to perform scaling.After adding 1 disk,how to monitor the data distribution and possible inputs.Is it possible?"
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78 views

Fresh install of 14.04 server edition doesn't boot

I've installed ubuntu 14.04 server, but on power-up I get the error message "Reboot and Select proper Boot device", even though I've set boot priorities correctly. The server is going to be a NAS. It ...
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1answer
191 views

OVH - Dedi 14.04 Server - Raid Reconfiguration Help for a Total Noob

I am a linux noob and have been saddled with a problem far beyond my abilities. My situation is this: This box: http://www.soyoustart.com/us/offers/bk-24t.xml (6x4TB drives) OVH image based ...
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1answer
35 views

Can't Reboot mdraid

I just created a raid 0 array with the following commands: # Install the necessary packages sudo apt-get install xfsprogs mdadm -y # Create the RAID 0 array. mdadm --create --verbose /dev/md0 ...
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62 views

Create a RAID5 on my Ubuntu Server 12.04

I have an operational Ubuntu Server 12.04 with only one HD (1Tb). I need more capacity and stability, so I bought last week 3 HD(1Tb each) to make a RAID5 and migrate the information of the old HD to ...
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69 views

Extra RAID array keeping disks busy

I have a software RAID-5 with 5 disks (Seagate ST31500341AS). SMART was saying that one was at risk of IMMINENT FAILURE. I replaced it with a new disk, also a 1500GB Seagate. The array wouldn't start ...
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144 views

Degraded mdadm RAID5 array & ARRAY UUIDs mismatch (Ubuntu 14.04.1)

Every reboot on my server results in a halt due to a degraded RAID5 (software) array. The same drive /dev/sdc appears to be dropping out each time. I ignore and boot with a degraded array any ways. ...
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36 views

I lost my raid…(it won't load)

After plugging in an extra drive I lost my raid drives. In the drives GUI it shows all of the raid drives as connected but when I go to start the raid it says: /dev/md/Storage assembled from 1 ...
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72 views

format/build raid 5 with one 4k drive, three 512b

I have 4 WD 1TB drives which I want to 4x1TB Raid5. I am not sure what course of action to take next. How do I configure my 4th drive (sde) to align with the rest? Will this affect performance? I ...
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32 views

Installation with FakeRaid

I have a problem while installing Ubuntu on my laptop. Actually, Windows 8 is installed with a raid0 managed by the Intel Rapid Storage Technology. At first, I tried to install without delete this ...
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9 views

How to select the number of mirrors in a raid10 with mdadm

i know ho to create a raid10 with mdadm but i don't know what is the parameter for select the number of copies. I have 6 hard drives. Using the default values it will make only a copy of 3 hard ...
0
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1answer
161 views

Drive failure in Raid1. Can't replace

I have a software raid1 and mdadm emailed me that a drive failed. Following steps I found online, I marked as failed and removed the drive from the raid. I replaced the drive with an exact make and ...
2
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0answers
396 views

14.04 - Replaced drive in Software RAID 1 - How to make bootable?

I have an Ubuntu 14.04 x64 server with 2 500GB drives (sda and sdb) in a software RAID 1. I just had to replace sdb. Adding it back to the array with mdadm and resyncing was a snap. The problem I'm ...
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107 views

RAID 0 Superblock recovery?

Cool, I have a Synology Diskstation 212j, with 2x3TB drives in RAID 0 (I know, I know, I was very naive; never had a drive failure before). About a month back the volume crashed, I recovered the ...
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0answers
114 views

64 Bit Xubuntu on Full Software Raid 0 Using Mini.Iso

What I am asking is doable but the thing is I forgot how to do it since the last time I did. I recently upgraded my Ram to 8Gb from 2Gb. I am using an Asus Maximus Extreme with an intel core 2 duo ...
2
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1answer
5k views

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?
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127 views

Raid Won't Mount After Reboot

I'm building a new Ubuntu 14.04 server with RAID. I partitioned the operating system and swap partition on a small harddrive and have the RAID strictly for files. After adding a new disc to the RAID, ...
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2answers
58 views

My (older) computer has become unbootable except for ubuntu minimal CD - RAID mdadm

I really hope someone can help me out here because my computer has become unbootable, and it holds a RAID-5 data disk Array (mdadm ) which I need to recover. No OS will boot, nor USB, nor DVD, nor ...
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1answer
231 views

Ubuntu with system on mdadm, broken grub, won't boot

My old disc started failing so I decided to change it. While moving data to a new disk, seeing how big it is, I though it would be a good decision to split the disk and add some insurance with RAID1 ...
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1answer
233 views

problems with creating a raid 5 array

when ever I try creating a RAID setup with the disck utility it gives me the following error: Error creating RAID array: Error spawning command-line `mdadm --create /dev/md127 --run --chunk 512 ...
0
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1answer
29 views

How to remove fakeraid

I had a RAID 1 setup using by bios. Ubuntu was installed on the RAID array. I want to move to a software RAID 5 using mdadm with 3 disks. I have deactivated the RAID 1 in the bios, copied the ...
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1answer
84 views

RAID10 write speed decreased to normal SSD speed after rebuilding the array

OS: Ubuntu 14.04 LTS Software Raid10: 4x120Gb Intel 530 SSDs Server: HP ProLiant DL160 G6 FS: md0: ext4/ md1:swap Test is made on fresh new install, before making any change to some package or ...
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91 views

RAID 0 recovery from lacie NAS

I am in desperate need of some assistance by the more experienced users out there! I am trying to rebuild a RAID0 that is composed of two 2TB Hard drives. These come out of a LaCie Ethernet BigDisk ...
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1answer
249 views

2-disk RAID array missing one disk. fdisk sees them both. Missing disk is “non-fresh”. What to do?

I have two physical 500 GB hard disks in my Ubuntu 12.04.4 PC and they are supposed to be in a 2-disk RAID array. However, mdadm -D /dev/md0 is reporting that /dev/sda seems to be inoperative, even ...