Hardware :: RAID - Create RAID 1 Without Deleting Data?
Jul 18, 2009how can I create RAID 1+0 using two drives (one is with data and second one is new). Is it possible to synchronize data drive with empty drive and create RAID 1+0 ?
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Ubuntu Servers :: RAID-5 Recovery (spare/active) / Degraded And Can't Create Raid ,auto Stop Raid [md1]?
Feb 1, 2011Could any RAID gurus kindly assist me on the following RAID-5 issue?I have an mdadm-created RAID5 array consisting of 4 discs. One of the discs was dropping out, so I decided to replace it. Somehow, this went terribly wrong and I succeeded in marking two of the drives as faulty, and the re-adding them as spare.
Now the array is (logically) no longer able to start:
mdadm: Not enough devices to start the array.Degraded and can't create RAID ,auto stop RAID [md1]
I was able to examine the disks though:
Code:
root@127.0.0.1:/etc# mdadm --examine /dev/sdb2
/dev/sdb2:
Magic : a92b4efc
Version : 00.90.00
code....
Code:
mdadm --create --assume-clean --level=5 --raid-devices=4 /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2
As I don't want to ruin the maybe small chance I have left to rescue my data, I would like to hear the input of this wise community.
Ubuntu :: Mount A RAID Drive Without Deleting Data?
Jun 1, 2010I had to recently reinstall ubuntu because 10.04 started acting up on me. I reinstalled 9.04 but I don't know how to mount my RAID drive without messing with the data that's already on there. I have the UUID for the RAID but fstab isn't able to find it. I also previously used RAID software but I don't remember which one I used. how to mount my drive so that ubuntu can see it?
View 5 Replies View RelatedFedora :: RAID 1 - How To Create New Array Without Losing Data
Jan 1, 2010I have a software RAID array using mdraid that consists of two 1.5TB drives that I use for storage, the array is mounted at /Storage. I am running out of space in the array so I ordered two more 1.5TB drives to create a 4 drive RAID 1+0 array which will be 3TB big. My question is how do I create the new array and not lose any data?
The drives and partitions are sdc1, sdd1, and soon to be sde1, sdf1. I currently have 4 RAID arrays (md0,md1,md2,md3). I think I can create the RAID 1+0 array with the two new drives, copy the data from my current array to the new one, remove the old array, then add the two original drives to the new array. But I wanted to ask on here first to make sure my data doesn't go poof.
General :: Repair Filesystem After Deleting RAID
Apr 4, 2010Playing with the Box, I deleted a Raid-0 partition intentionally, saved it, and reboot drops me to (Repair Filesystem#) prompt. I notice during boot-up that the box didn't find /dev/md0, which is expected.
So what's the recovery procedure, since I can't edit #/etc/fstab, permission denied.
#fdisk -l
shows all other partitions.
Not much familiar with fsck/e2fsck, yet like to give it a try.
Ubuntu :: 3TB HD (with Data) Expanding To 3x3TB RAID (without Losing Data)?
Jul 27, 2011Right now I have a 320GB system drive and 3TB data drive. I want to add two more 3TB drives and do a software RAID5 3x3TB. Is that possible without losing the data that is already on the data drive?Just want to make sure before I bought the 2 two drives. Not looking for instructions on how to do it,but if you want to include some that would be great too Just making sure it will work.
View 1 Replies View RelatedUbuntu :: Mdadm Raid + GRUB = Not Booting - Error: Unsupported RAID Version: 0.91
Jul 18, 2011I have a raid5 on 10 disk, 750gb and it have worked fine with grub for a long time with ubuntu 10.04 lts. A couple of days ago I added a disk to the raid, growd it and then resized it.. BUT, I started the resize-process on a terminal on another computer, and after some time my girlfriend powered down that computer!
So the resize process cancelled in the middle and i couldn't acess any of the HDDs so I rebooted the server.
Now the problem, the system is not booting up, simple black with a blinking line. Used a rescue CD to boot it up, finised the resize-process and the raid seems to be working fine so I tried to boot normal again. Same problem. Rescue cd, updated grub, got several errors: error: unsupported RAID version: 0.91. I have tried to purge grub, grub-pc, grub commmon, removed /boot/grub and installed grub again. Same problem.
I have tried to erased mbr (# dd if=/dev/null of=/dev/sdX bs=446 count=1) on sda (ide disk, system), sdb (sata, new raid disk). Same problem. Removed and reinstalled ubuntu 11.04 and is now getting error: no such device: (hdd id). Again tried to reinstall grub on both sda and sdb, no luck. update-grub is still generating error about raid id 0.91 and is back on a blinking line on normal boot. When you'r resizeing a raid MDADM changed the ID from 0.90 to 0.91 to prevent something that happend happened. But since I have completed the resize-process MDADM have indeed changed the ID back to 0.90 on all disks.
I have also tried to follow a howto on a similar problem with a patch on [URL] But I cant compile, various error about dpkg. So my problem is, I cant get grub to work. It just gives me a blinking line and unsupported RAID version: 0.91.
General :: Migrate An Installed Ubuntu System From A Software Raid To A Hardware Raid?
Jun 29, 2011migrate an installed Ubuntu system from a software raid to a hardware raid on the same machine? how would you go about doing so?
View 1 Replies View RelatedServer :: How Long Does Hardware Raid Card (raid 1) Take To Mirror 1 TB Drive (500gb Used)
Mar 22, 2011How long does hardware Raid card (raid 1, 2 drives)take to mirror a 1 TB drive (500gb used)?Is there a general rule of thumb for this?4 hours? 12 hours? 24 hours?
View 1 Replies View RelatedCentOS 5 Hardware :: Connect A RAID Box To The Server Via LSI 8880EM2 RAID Controller
Aug 3, 2010I am trying to connect a RAID Box to the server via LSI 8880EM2 RAID controller.The raid box is FUjitsu Externus DX60 with raid 1 configured.The server is Fujitsu Primergy SX300 S5 with LSI 8880EM2 RAID card.The external raid box is being recognised by the raid controllers bios.
The server runs CentOS 5.5 64bit. I have installed the megaraid_sas driver from LSI website and MegaCLI utility but CentOS still fails to see the box.MegaCLI utility, when launched from CentOS, recognises the raid box, CentOS does not(no mapping being created in /dev).
I have also tried to create a logical RAID0 HDD on one physical HDD(as seen by MegaCLI) with MegaCLI utility in CentOS.The result was success and the new logical drive could have been used, but when restarting the server, the controllers' bios fails with an error (not surprised(one logical RAID0 on one physical HDD)) and configuration is being erased.
Has anyone tried connecting 8880EM2 controller to a raid box with raid configured on the box, running it all under CentOS and what were the results.
Ubuntu Installation :: Dual Boot - Win 7 And 10.10 On Raid 0 - No Raid Detect
Nov 26, 2010I have installed Ubuntu on my m1530 since 8.04 and currently dual boot Win7 and 10.10. I would like to dual boot on my PC, but I have run into a problem. I am not a pro at Ubuntu, but this problem I can not solve by reading forums like I have in the past.
I realize this is a common problem, but I have noticed people having success.
I have a M4A87TD EVO MB with two Seagate drives in Raid 0. (The raid controller is a SB850 on that MB) I use the raid utility to create the raid drive that Windows7x64 uses. I have 2 partitions and 1 unused space. Partition 1 is Windows, partition 2 is for media, and the remaining unused space is for Ubuntu.
I am running ubuntu-10.10-desktop-amd64 off a Cruzer 16GB flash drive that was installed via Universal-USB-Installer-1.8.1.4.
My problem like so many others is that when I load into Ubuntu, gparted detects two separate hard drives instead of the raid. I read that this is because kpartx is not installed on 10.10. I then went in LiveCD mode and downloaded kpartx from Synaptic Manager. Gparted still reported two drives. I opened terminal and run a few commands with kpartx. I received an error. (Forgive me I didn't write it down, but I believe it said something about a communication error. I will try again later and see.)
Currently I am reflashing the Cruzer with a persistence of 4GB. I am not familiar with this process, but I understand that my LiveCD boot will save information I download to it. I decided to try this method because I was going to install kpartx and reboot to see if this made a difference.
I am looking for any suggestions on a different method or perhaps someone to tell me that the raid controller or some hardware isn't supported. I did install ubuntu-10.10-alternate-amd64 on my flash drive, but fail to get past detecting my CD-ROM drive since it's not plugged in. If this method is viable, I will plug it in. I also watched the ..... video were a guy creates Raid 0 with the alternated CD, but it wasn't a dual boot and didn't use a raid controller from a MB.
Ubuntu :: Recovering Some Data From Raid 0?
Aug 11, 2010So I've pulled two hard drives out of my busted windows xp system (dead mb) and I'm trying to get some data off of them. The drives are in raid 0, so my friend told me that I might be able to do something if I use linux. Some late night searching on the internet directed me to a few resources, one of which was this forum. I've tried 2 methods, neither of which have worked.
1. mdadm
ubuntu@ubuntu:~$ sudo mdadm --detail /dev/sdb
mdadm: /dev/sdb does not appear to be an md device
2. dmraid
ubuntu@ubuntu:~$ sudo dmraid -s
/dev/sdb: "sil" and "hpt45x" formats discovered (using hpt45x)!
ERROR: sil: wrong # of devices in RAID set "sil_agafdhcebccj" [1/2] on /dev/sda
ERROR: removing inconsistent RAID set "sil_agafdhcebccj"
[code]....
I've got some files for work that I'd really like to get off there. I've played with unix a bit in college and I've ran ubuntu before, but usually using the GUI, so a lot of this stuff is over my head. But from what I gather, my system thinks that one of the drives isn't a raid drive?
Ubuntu :: Raid 1: Does It Destroy Data?
Jul 4, 2011my question is quite simple and at the same time should even sound weird for people that is used to use raids... but here we go! I have got 2 hard disks that do match in space. I'd like to use mdadm to create a raid 1, the mirror one. Since I don't want to format / erase / delete what's in my primary hard disk (/dev/sda, 3 partitions), how can I replicate its content into /dev/sdb and mirror it with the raid tool? Does something like this work?
- install madam
- fdisk /dev/sdb and replicate sda's partitions (using as filesystem "fd");
- sudo mdadm --create --verbose /dev/md0 --level=mirror --raid-devices=2 /dev/sda1 /dev/sdb1
- sudo mdadm --create --verbose /dev/md1 --level=mirror --raid-devices=2 /dev/sda2 /dev/sdb2
sudo mdadm --create --verbose /dev/md2 --level=mirror --raid-devices=2 /dev/sda3 /dev/sdb3
Do you have any page to point, with the right documentation to achieve a replication of the hard disk without a format of the source disk?
General :: RAID A Drive Already Containing Data?
Aug 13, 2010I currently have a 1.5TB sata drive connected to my system, with data already on it. In the next few days I am planning to use mdadm to create a raid5 array with another 2 1.5TB drives along with the one I already have. Is it possible to create the raid without losing the data on my current hard drive? Obviously it will be backed up before hand just in case, but it would be nice not to have to restore nearly a TB of data after raid'ing the drives.
View 2 Replies View RelatedHardware :: Recover Data From RAID 0 From Win XP?
Apr 23, 2009My friend has a DELL DIMENSION 9150 computer with 2 harddisk (250 GB each) in RAID 0 (fake raid) with Windows XP installed. There are a lot of documents and pictures installed - and no backup ever done! I have found some pages regarding recovery data from RAID 0 () but My friend have bought 2 new harddisks(WESTERN DIGITAL 2500AAJS) which is almost the same as the ones inside.
My plan:
1. copy each harddisk
2. replace original HDDs with my copies
3. try to recover
4. change RAID 0 to normal HDD in BIOS
5. reinstall Windows XP
I have some LINUX distros (DSL, SystemRescCD, UltimateBootCD on Live-CD and UBUNTU installed on one other computer) which I can use. I read about "dmraid" and then try to mounting the RAID in a UBUNTU live-CD version...
Software :: Set Up RAID For Data Partition?
Jun 22, 2011I'd like to set up RAID for my data partition.
My data are in /dev/sda5 (ext3).
There's an empty partition /dev/sdb5 (ext3).
I want /dev/sdb5 to be a mirror image of /dev/sda5, the command to invoke should be :
mdadm --create /dev/md0 --level=mirror --raid-devices=2 /dev/sda5 /dev/sdb5
My question is : how to ensure that the synchronization is done by copying data to the empty space and not the converse ?
Slackware :: Windows Raid-O Install Virtualbox, Will Slackware Install Raid-o Without Raid Driver?
Feb 28, 2011If I have a windows installed in raid-0, then install virtualbox and install all my linux os,s to virtualbox will they be a raid-0 install without needing to install raid drivers?
View 1 Replies View RelatedUbuntu :: Converting RAID 1 To RAID 5 System
Jun 12, 2010I have two 1TB hard drives in a RAID 1 (mirroring) array. I would like to add a third 1TB drive and create a RAID 5 with the 3 drives for a 2TB system. I have ubuntu installed on a separate drive. Is it possible to convert my RAID 1 system to a RAID 5 without losing the data? Is there a better solution?
View 1 Replies View RelatedCentOS 5 Hardware :: RAID Or Non-raid HBA Recommendation?
Dec 10, 2009I am going to be using CentOs 5.4 for a home storage server. It will be RAID6 on 6 x 1TB drives. I plan on using an external enclosure which is connected via two SFF-8088 cables (4 drives a piece). I am looking to try and find a non-RAID HBA which would support this external enclosure and allow to use standard linux software raid.
If this is not an option, I'd consider using a hardware based raid card, but they are very expensive. The Adaptec 5085 is one option but is almost $800. If that is what I need for this thing to be solid then that is fine, I will spend the money but I am thinking that software raid may be the way to go.
Ubuntu :: RAID Data Drive For System?
Apr 7, 2010I am trying to create a RAID data drive for my system but I am having setting it up since I am a total linux noob.
The system has 3 physical HDD-s:
1. 320 GB (has functional Ubuntu 9.10 installation) attached to a PCI SATA card
2. 2TB on motherboard
3. 2TB on PCI SATA card
I want to create a software RAID1 of disks 2 and 3. So far I have used the Palimpsest Disk Utility:
- Created a GUID Partition table on both disks (2, 3)
- Used File -> New -> Software Array, made sure both my drives were included
- Once Palimpsest listed the RAID Drive as a Software RAID Array, I told it to create Ext3 filesystem on it
Well.. at least thats what I thought I did. At this point I have been able to mount the RAID drive and put files on it. However when I look at its information in Palimpsest, I am told that the drive is not partitioned. Both RAId components /dev/sda1 and /dev/sdc1 are reported to be in Sync, but the RAID Drive's own state is 'Running, Resyncing @ 45%' (and lowly growing).
My questions are: Is this a normal setup or did I do something incorrectly? Why is the drive reporting to have no partition? And howcome I can use it if it does not have a partition? I have found the command line based configurations to be a tad too confusing to follow, so I have tried to stick to graphical tools - is this a hopeless cause in Ubuntu or is it possible to achieve what I want to do without command line? I will list some info on my disks below - perhaps this offers more insight to those of you more familiar with Linux.
Code:
mindgamer@mind-server:~$ sudo lshw -C disk
[sudo] password for mindgamer:
*-disk:0
description: ATA Disk
product: WDC WD3200BEVT-0
vendor: Western Digital
[Code]...
Red Hat / Fedora :: Setup RAID 1 Without Any Data Loss
Dec 7, 2010I have a Dell workstation, 2 HDD, HDD 1 setuped Red Hat 5.3 with LVM, and that HDD 2 is empty, not install RAID 1. And, I want to setup RAID 1 (hardware RAID)...but, have a problem. I don't want to lost data on HDD 1 when I setup raid, I try ghost or backup it, but when I restore, it error because LVM is setup on that.
View 4 Replies View RelatedHardware :: Recover Data From Raid 1 Drive?
Oct 17, 2010I was using a Buffalo LinkStation Duo to store pictures and the OS in the unit failed. As far as I know, the data on the two 1 TB drives is fine, and since Buffalo uses a Linux kernel in their LinkStation and the format is xfs, it should be possible to get the data off if I can mount one of the drives on a Linux box. I've put one of the drives into an external USB enclosure and attached it to my Linux system, but I cannot get the drive to mount, probably because it is one element of a Raid 1 array.
Most of what I can find on the Web concerns setting up a new Raid array, not creating an array around a drive that already contains data. I have installed mdadm, and I'm running Mint Linux release 9 (Isadora) on an Intel box. When I run mdadm -D /dev/sdb or sdb6, the device and the partition where the data is located, it reports that the device does not appear to be an md device. I'm not sure what that means. Any help would be greatly appreciated, as I've got around 13,000 photos on these disks that have no backup (I figured what could go wrong with mirrored copies?).
Server :: Creating LVM With Existing Raid - With Data On It
Apr 24, 2009I have a system that has the following partitions:
Now SDC is a new drive I added. I would like to pool that new drive with the raided drives to give myself more space on my existing system (and structure). Is this possible since my raid already has data on it?
Ubuntu Installation :: LVM And Software RAID - Moving Data
Jan 4, 2011I have a Linux installation that currently uses a 40GB hard disk. It is partitioned as follows:
Code:
The disk has recently started to make a lot of noise, so I'd like to replace it before I lose data.
I have a pair of identical 160GB blank hard disks that I would like to use as a software raid1 array (The existing 30-odd GB root partition would be resized to fill the new disks).
How I could get the data on to the new hardware without losing anything?
Ubuntu :: Raid 5 Rebuilt At Instal Lose Data?
Apr 17, 2011I have 6 drives in raid 5 for data. 2 drives in raid 1 for boot. During install I set my 2 drives as raid 1 and had them formatted. I also told it the 6 drives were raid 5 but did not tell it anything else besides not to format them. When I booted for the first time I found that it was rebuilding the raid 5 and the file system type is unknown.
View 9 Replies View RelatedHardware :: Access Data On NTFS Disk (RAID 5)
Mar 14, 2010I am trying to access data that is on a Raid 5 array in Ubuntu... There are 4 installed disks (250gig disks) - 3 of which are setup as a Raid 5 array (the 4th is active but unused). These show up as one large drive (498gig). I have had an issue with the drive where it is no longer allowing Windows to boot - I receive a disk read error on boot (so the OS does not load, obviously!) - what happened was basically I unplugged then replugged in one of the disks which affected the array... I physically reconnected everything as it was, I then had to 'reactivate' the disk in the Raid BIOS... at that point the array seemed OK, was the right size, etc (and was listed as "Optimal" in the Raid BIOS) however, the problem with the disk read error persists.
I have started the machine using Ubuntu v9.10 from a CD (non-destructive mode) and it shows a disk of the right size (ie: on the desktop and in Nautilus it says "498gig Filesystem" ). However, in Nautilus, the disk appears empty with no folders or files on it (even with hidden files shown).... If I view 'Information" for the disk it shows 67gig used space and 399gig free space (which is correct). Also, if I view the disk in Gparted, it shows a disk with about 67gig of used space and 399 free space on a 464gig disk (with 8gig unallocated). One more thing.... when I try the command 'sudo dmraid -tay' it says that there is no raid disk (there are in fact, no drives plugged into IDE or SATA slots - all disk are plugged into the RAID controller card). Anyway, at this stage, I just want to copy the data to a single hard disk if possible and move on.
Server :: Mount Raid Device To Recover Data?
Aug 20, 2009In a nutshell, our RAID 1 array was rendered broken and we were advised that core lib files were missing and the OS needed to be reloaded... a quote from our server host:"The OS is not healthy.This server will need a reinstall.
Libs are missing." This was after having replaced what we though was a faulty /dev/sdb. So they reloaded the OS (Debian 5.0.2 x86_64) on 2 FRESH drives, and installed the old /dev/sda as /dev/sdc once the reload was completed. Here's the output of /etc/fstab on the fresh install so we know what we're working with:
Code:
debian:/BAK# cat /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
[code]....
The one problem I see myself running into is /dev/md1 and /dev/md2 are currently in use by the new system, so I cannot mount it there. I should also note, reloading the OS is a viable option if needed as we haven't started configuring the server yet. So if we need to reinstall the OS and assign the NEW RAID arrays to something other than /dev/md1 and /dev/md2 then we can do that.
Server :: Recreate Raid-5 Array Without Loosing Data
Dec 11, 2010I rebuilt a server and am now trying to recover my large data arrays. The server was ubuntu 10.04lts before. I decided to rebuild it with CentOS simply because I am more familiar with it. I had 2 raid-5 arrays on the old server:4 x 1tb -> md0 5 x 2tb -> md1 The newly built server does not know about these arrays yet. How can I reassemble the arrays without loosing my data? I know the data can still be accessed because booting the server with a live-cd mounts and shows the arrays just fine. Should I boot with a live cd and copy the mdadm config file?
View 5 Replies View RelatedFedora :: How To Create Software RAID 5
Oct 31, 2010I've never worked with a software raid before, and I was a little worried about getting the hand of it before actually relying on it. So what I decided to do is to create a raid 5 on my Fedora 12 installation, and then install fedora 14 and see if the raid 5 was still in tact on the OTHER 4 disks that were NOT a part of the OS drive. After installing Fedora 14 I noticed that the raid5 was broken, and I googled for hours and even started a thread here, but could not get it working again.
I decided to start from scratch, and just delete all of the partitions and the raid, and do a new raid5 using 4 disks that are 2tb each. I googled for a long time, and tried using both the cli (mdadm) and the gui (disk utility), but I was not able to successfully get a new raid5 working? I've tried various examples, to no avail. Any link to a difinitive resource on how to setup a raid5? I don't just mean the commands for mdadm, but also the actual disk formatting that's required before setting up a raid, if it's even required. I say thing for 2 reasons:
1) In fedora 12, using disk-utility, I didn't have to format the drives first, or anything else. I just selected 4 drives, said to make them a raid 5, and then formatted them as ext4. But many examples I've seen says that the drives must already be formatted, and you use partition #1 of each drive to setup the raid, whereas when I did it, I didn't have any partitions (they were new drives), and I could format after.
2) One example I've found says to use ext*, whereas another example says to use xfs. I don't feel this matters, and is only a matter of choice/taste, right?
General :: Create RAID In Rhel-5
Apr 22, 2010how to create RAID-1 in rhel-5
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