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Currently my system boots up from a software RAID5. I want to leave the array intact and to boot form a standalone drive

I am just looking ahead for some advice and recommendation in regards to the best migration path. I would like to add aw drive to the system and to boot from that drive. What is the best way to ...
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1answer
46 views

Cannot create RAID5 Ubuntu Server 14.04

I'm trying to configure RAID5. I know this question has been asked before but I have been stuck on this for 3 days. Input: sudo mdadm --create /dev/mdo --level=5 --raid-devices=3 /dev/sdb1 /dev/sdc1 ...
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56 views

GRUB could not be installed on softraid (mdadm on 14.04.03 server)

I ve got some problems with installing latest 14.04.3 The bug is described here. After using mdadm to create software raid5 (3 HDD) partition, the GRUB refuses to install. Updating the update-grub ...
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22 views

How to install ubuntu on ssd? [duplicate]

I'm building my very first home server for store media (music, photo etc),documents, backup and print. Also like to access from ouside my home. My computer setup is like this; 16gb memory 256gb m2 ...
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1answer
88 views

RAID 5 status = “Initialize”

I recently built a PC and loaded 14.04 on it. My motherboard (ASRock z97 Extreme 4) has the capability to run a RAID array built into it (pardon my terminology if I'm wrong, I'm not really that good ...
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1answer
29 views

Softraid 5 Ubuntu

I have installed a raid 5 on my ubuntu server 14.04 and I want to know how I replace a hard disk and make it recover/build on that HDD. My setup is 4 1tb hard disk in raid 5. No other HDD's or SSD's ...
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1answer
576 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re-assemble out-of-date raid5?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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1answer
233 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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1answer
344 views

Determine RAID 5 config on ubuntu server. Was it hardware or software RAID 5?

I am not an experienced Linux or Ubuntu user. I do have many years of software/hardware tech support experience. A customer brought in a DOA Dell Precision 670 Workstation that was set up as a web ...
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1answer
2k views

md0: detected capacity change from 0 to… md0: unknown partition table but the system boots up [closed]

So I had a problem with my server running Ubuntu 14.04 and 3x1T configured with a software RAID. I forced mdadm to mount the RAID with two disks only, I added the missing disk back to the RAID array ...
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1answer
79 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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1answer
45 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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0answers
55 views

Help with RAID5 array - gone after reboot

I'm newly back to Linux after >20 years. First install was with a beta kernel in ~1992. I've build a home media server with a 4-drive RAID 5 array with the latest workstation version of Ubuntu (...
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2answers
218 views

Valid SSH command to create a RAID5? [closed]

Valid SSH Commands for creating and rebuilding RAID5 with 4 drives: To create a RAID5 with 4 hard drives: mdadm --create /dev/md1 --level=5 --raid-devices=4 /dev/hd[abcd]5 To rebuild a RAID5 with 4 ...
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1answer
1k 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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1answer
159 views

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

I am currently working on a bash script to create raid5 with 3 disks and one hotspare. I am confused of how to create a script which first check if mdadm exist, if not it will install it and name it ...
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2answers
6k views

How can I mount software raid drive mdX with fstab

I have raid5 configure with gpt partition to allow working with drive larger the 1.6 TB Ubuntu version is 12.04 and the md drive is 5TB. with: mount -t ext3 /dev/md129 /images mount works fine....
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1answer
334 views

When I mount my RAID5, there is constant activity; how can I figure out what it is?

there. I'm using Ubuntu 13.10 64bit. I have a 4-disk RAID5 (3 disks, 1 spare) setup, and it's completely synced/built, and the ext4 filesystem it contains is clean. When I assemble the RAID, all is ...
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1answer
3k views

Why is GRUB failing to install?

I'm trying to install ubuntu Server to a RAID5 array. I have three, 3Tb disks, each with a GPT partition table. I have set up my partitions as follows: /dev/sda 1. 512 Mb physical RAID volume 2. 3 ...
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1answer
2k 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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1answer
704 views

Ubuntu Server cannot boot - HDD problems

I have major problem, my Ubuntu Server won't start up after reboot, guys in Hetzner datacenter started recsue sistem up and found out this on sda: -----------------%<----------------- 5 ...
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1answer
152 views

13.10 with Raid 5 mount issues

I have installed Ubuntu 13.10 onto an HP Proliant Microserver with a Raid 5 configuration. Using Mdadm, it found the raid and now auto mounts when I reboot...but...the actual folders aren't appearing ...
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1answer
428 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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1answer
354 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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1answer
698 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
358 views

Ubuntu Server Raid Install

I am installing Ubuntu Server 13.04 on an ICH9R raid controller with 1tb of space (5 250gb Raid 5). Everything goes fine until the point of installing Grub. It will not install grub to anywhere but ...
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1answer
453 views

How do I install 13.04 alongside windows on an Intel Raid 5?

Whenever I try to install Ubuntu I run into issues. All the live CD's don't display the Intel raid 5 and show multiple drives. When I tried the 12.04 alternative, And the Raring Minimal ISO. The raid ...
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1answer
94 views

Upgrading from Ubuntu 32 bit to 64 bit with software raid

I'm currently running Ubuntu 13.04 32 bit. I'd like to move to 64 bit and everything I've read has stated that I should probably completely reinstall to do so. I have my OS on a 1GB hard drive and ...
0
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1answer
472 views

Which version of Ubuntu support HP ProLiant ML350e Gen8 Server?

Which version of Ubuntu support HP ProLiant ML350e Gen8 Server ?? will in future versions of ubuntu , the raid 5 will be supported ?
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1answer
89 views

Raid Partition Setup

I have 4 drives that I would like to install a RAID 5 on. 1) 80GB 2) 2TB 3) 2TB 4) 2TB Can someone help me figure out what the partition setups should look like? I am installing ubuntu server 12.04 ...
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1answer
2k views

Install ubuntu server 12.04.2 LTS with RAID 5 [duplicate]

I'm currently installing Ubuntu server 12.04.2. The hardware is as follows : 1 500Gb HDD for Ubuntu 4 3Tb HDD's for the raid 5 array. I'm just wondering : during the partition part of the install, do ...
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1answer
387 views

Copy a “bad” GPT partition table to another drive

I'm trying to copy a GPT partition table. To make a long story short, I had a RAID5 on 4 drives (Intel Matrix Storage Manager, not Linux software RAID). What I have now is: 1 empty drive 2 drives ...
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2answers
14k views

NAS Raid 5 Recovery using mdadm: volume and mount issues, please help

Hello this is my first foray into ubuntu, or any form of Linix for that matter, as well as my first attempt to ever recover a lost a raid, but I'm a fairly quick study. I have an 8TB WD Sharespace, ...
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1answer
9k views

grub error: out of disk when booting 12.04 server with hardware RAID5 and gpt

I'm trying to do a new install of 12.04 server on one node of a Dell PowerEdge C6145 with the following spec: 48 cores 512GB RAM LSI MegaRAID 9265 controller 4x2TB disks, configured with RAID5 giving ...
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2answers
2k views

Activate spare for RAID-5 in Disk Utility

I have a RAID-5. I'm trying to replace a failing drive in Disk Utility GUI. I added a new drive as a spare, then did "Remove Component" for the failing drive. How do I tell it to actually use the ...
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4answers
5k 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 ...
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0answers
257 views

Building and migrating to software raid 5 array

I am hoping to build and migrate to a software raid 5 array. I am working with ubuntu 12.04.1 LTS 64-bit. I currently have three drives: /dev/sda1 which is a 60G solid state drive which contains ...
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0answers
2k 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 ...
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1answer
732 views

ubuntu 12.04 and/or 12.10 can boot from software raid5?

I read from a very nice post (http://forevergeeks.com/setup-ubuntu-server-with-raid-5/) that ubuntu cannot boot from a raid 5 partition. Since the post is quite old I wonder if this is still true or ...
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1answer
815 views

How can I create a 4TB partition on my software RAID5 device?

I have set up a RAID5 device with three 2TB hard drives using mdadm. The device was successfully created, but I cannot seem to create a partition on the device. When I try to make an ext3 or ext4 ...