Hardware :: Can I Add Raid0 Array To Existing Install Leaving OS On Original Drive
Mar 24, 2009
I am currently running Ubuntu 8.10 amd64 on a single 750GB drive. My question is whether or not I can add two more drives (say 2 500GB drives) in a raid 0 array leaving the OS and data on the original drive? I find my self working with some very large files and I would like to speed up their processing time. At the same time, I would like to leave my current configuration in place without touching the OS or my data. I'm not much of a hardware guy.
I am currently running all my applications off a HD as I was unable to install the grub bootloader on my ocz pci express card (grub won't install on the pci express card as it is a raid0 array). I would like to use the HD for backup only and run everything off the ocz card - with the exception of booting (which is unfortunate but I didn't manage to make the pci express card boot). How is it possible to tell suse during the installation to create the /boot on the HD and the rest on the pci express card and also to allocate the remainder of the HD as empty storage area??
I administer a small network of computers connected to a windows 2003 server. The machines Dual boot Windows XP and CentOS 5.
My question is this. The machines are being upgraded to HP Z800 workstations. These workstations come with 2 1TB drives setup on a hardware RAID0. Can I install Linux on these machines, using the RAID0? Can I do an install as if it was just one hard drive? The machines came with Windows7 and I'd like to keep it intact including the RAID0. Can I do the install where it resizes the partition, adding the linux partition to the "drive".
If I can't use the existing windows RAID0 to install CentOS I was thinking of just installing another hard drive in the machines for it. This brings up another question, what would happen if I moved my Linux drive from one of the old workstations and put it in the new workstation, would it boot? I know windows wont boot like this because of the hdd controller drivers and I have a sneaky work around for this anyway but am not wanting to transfer the windows installation.
I administer a small network of computers connected to a windows 2003 server. The machines Dual boot Windows XP and CentOS 5. My question is this. The machines are being upgraded to HP Z800 workstations. These workstations come with 2 1TB drives setup on a hardware RAID0. Can I install Linux on these machines, using the RAID0? Can I do an install as if it was just one hard drive? The machines came with Windows7 and I'd like to keep it intact including the RAID0. Can I do the install where it resizes the partition, adding the linux partition to the "drive".
If I can't use the existing windows RAID0 to install CentOS I was thinking of just installing another hard drive in the machines for it. This brings up another question, what would happen if I moved my Linux drive from one of the old workstations and put it in the new workstation, would it boot? I know windows wont boot like this because of the hdd controller drivers and I have a sneaky work around for this anyway but am not wanting to transfer the windows installation.
How do i create a raid0 array of these drives? On each drive i have got a partition whose size is 160GB and formatted to type fd (Raid Autodetect) i have tried the following:
Code: mdadm --create /dev/md0 --level=0 --raid-devices=3 /dev/sdb1 /dev/sdc1 /dev/sda1 mkfs.ext4 /dev/md0 mount /dev/md0 /media/raid but for some reason it doesnt work.
When I set up Ubuntu 10.10 I had only one hdd around so I installed my system with the idea that I will add the 2nd hdd for raid1 later on. Last weekend I wanted to add the hdd, but discovered, that ubuntu created a raid0 array. So I went on and tried different things: removing the 1st hdd from the raid0 array, create a raid1 with two disks, and so on... I finally could syncronize both disks but after a reboot the raid0 array appeared again with only one disk. Now I know, I should have written the mdadm.conf and fstab files... My last tries resulted in a missing superblock. Here is the story:
I currently have two hard drives, with my root partition configured in RAID0. I'd like to add two additional hard drives, and include them in my RAID0 array. I need to recreate the array to do this, so I'd like to copy everything off of the existing array, add the drives, build the new array, and copy everything back. I have an external hard drive with four times the capacity of my current array. What would be the best way to copy this data so that nothing is missed, so I can just copy everything back and boot back up? dd, image the entire root partition, mount it after creating the new array, copy everything back (at the filesystem level) dd, image the entire root partition, write it back out to the new array, I'm not sure how this would work, because the partition will be the wrong size, I don't know much about dd. rsync, just rsync everything on root over to the external something else? I plan on booting to a live CD and mounting my current array there, so I won't be working on a live filesystem.
I couldn't post in General. It said I had insufficient permissions to post there, so, this post does have to do with Windows slightly. Sorry that it's here, but I DID read the rules (I searched, and couldn't find an answer to my problem either)
Anyways, I have a RAID5 array 2.72TB (4x1TB drives) which I used in my windows installation, initialized as GPT, and I used "span" to make the single 2TB partition, and 720GB partition into one partition. I believe that Windows created a software RAID0. Ok, so now I've made the leap away from windows, and am going 100% into Linux (Debian, to be exact) and I'm trying to figure out how to mount this array. I've only done basic web/ftp/ircd server management on Linux before, and never anything with mounting drives. I'm a complete n00b at this stuff.
I'm looking to shrink my windows partition on a raid0 array and create a mdadm ubuntu partition using raid0. Is this possible? can I just ignore the /dev/mapper device and use the standard /dev/sdx devices?
I'm currently in the process of getting my server moved over from a Server 2003 machine to one based on Fedora 12. My issue is that I have an existing RAID5 array on a rr1740 card. When I install this in the new system each individual drive show up as sdc sdd etc not as one volume. I have tried installing the highpoint driver but I get an error that sata_mv cannon't be unloaded. I have tried adding this to /etc/modprobe.d/blacklist to no avail.
System currently looks like this. ASUS mini ITX Atom D510 based board with 2x on board SATA, attatched to these are a 160GB OS drive, 400GB data drive. Highpoint RR1740 PCI card with 5x500GB drives in RAID5.
I'm currently in the process of getting my server moved over from a Server 2003 machine to one based on Fedora 12. My issue is that I have an existing RAID5 array on a rr1740 card. When I install this in the new system each individual drive show up as sdc sdd etc not as one volume. I have tried installing the highpoint driver but I get an error that sata_mv cannon't be unloaded. I have tried adding this to /etc/modprobe.d/blacklist to no avail. System currently looks like this. ASUS mini ITX Atom D510 based board with 2x on board SATA, attatched to these are a 160GB OS drive, 400GB data drive. Highpoint RR1740 PCI card with 5x500GB drives in RAID5.
I ran into this and found a non-trivial solution so I thought I'd share in case anyone else ran into it.I have two 200GB drives so I thought I'd install my system with RAIDed partitions for /boot, / and /home. I would use RAID1 for /boot and /home because GRUB2 can load the kernel from a RAID1 and I thought the extra reliability for /home would be nice. (I may second guess /home on RAID1 once I get to test performance.) I chose RAID0 for / to provide faster application loading.I prepared the drives using a Live CD because I'm not confident that I can do what needs to be done during installation.First I partitioned the drives as:
Code:
hbarta@olive:~$ sudo fdisk -luc /dev/sda Disk /dev/sda: 200.0 GB, 200049647616 bytes 255 heads, 63 sectors/track, 24321 cylinders, total 390721968 sectors Units = sectors of 1 * 512 = 512 bytes
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At this point I could restart and boot from the system hard drives and proceed with configuring my system. I'm not positive that it is necessary to add the modules to /etc/initramfs-tools/modules but I do know that alone is not sufficient. An earlier attempt was to install grub (install-grub /dev/sda; install-grub /dev/sdb) within the chroot and I found that also was not sufficient. I have not listed it above because I think it was not necessary. But on these two issues, I'm not going to reinstall again from scratch just try...
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Another possibility is to install using the Alternate CD. I did not try that but it may provide better RAID handling. Last week I installed 10.04.2 LTS Server to a RAID1 and it did not experience this problem. However I do not know if it is RAID in general or RAID0 that led to the issues I encountered.
I'm running 10.04 x86 server with a really simple installation on a single 250GB boot disk. I then have a RAID5 array as /dev/md0 (set up using mdadm with x4 2TB disks). All is working well. My mdadm.conf file looks like this
Code:
# mdadm.conf # # Please refer to mdadm.conf(5) for information about this file.
[code]....
if I was to lose the boot disk and need to remount the RAID array on a fresh installation, what steps do I need to go through. My assumption is that the superblocks on the RAID disks will be used and I don't need to keep any additional information - is this right?
I have a home samba server with a 3ware Escalade 8506-8. I have 5 x 500 gig hard drives in a RAID 5 array. Recently, my 8506 died and I need to get a new one. However, I saw a 3ware Escalade 9500S-12 on ebay for about $20.00 dollars more than a replacement 8506-8.
My question is, if I put my drives on the 9500S, will it recognize my existing RAID array? Or will it want to build a new RAID array and format all of my data?Hope I have asked this question clearly, little short on sleep this week.
I had done a new lucid install to a 1 TB RAID 1 array using the alternate CD a few weeks back. I messed up that system trying to some hardware working that lucid doesn't have drivers for yet, so I gave up on it and reinstalled to a single 80 GB disk that I now want to move over to the RAID array.
I moved all of the existing files on the array to a single folder, then copied all of the folders from the 80 GB disk over to the array with permissions and symlinks (minus the contents of /proc and /sys, which I created empty).
These are the commands I used:
Quote:
p -a -d -R -v -t /media/raid_array /b* cp -a -d -R -v -t /media/raid_array /d* cp -a -d -R -v -t /media/raid_array /e* cp -a -d -R -v -t /media/raid_array /h*
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I tried to change fstab to use the 689a... for root, but when I try to boot, it's still trying to open /dev/disk/by-uuid/412d...
So then I booted from the single disk again and chrooted into the array, then ran update-initramfs -u. I got 3 "grep: /proc/modules: No such file or directory" errors, and "cat: /proc/cmdline: No such file or directory"- so I created directory /proc/modules, created an empty file /proc/cmdline, and ran the initramfs update again. Then I tried to shut down, which hung (probably because I was doing all of this from a terminal window in Gnome), so I killed the power after a couple of minutes.
It's still trying to use /dev/disk/by-uuid/412d... to boot.
What am I missing? I assume I just have to change the UUID to mount as root, but I don't know how.
Because of all the trouble with the asrock 939SLi-eSATA2 (see my previous unsolved thread) I have bought a new MSI 790FX-GD70 mobo + processor +ram3 memory and shifted my MSI K9N2-platinum to the asrock box and mothballed the asrock mobo. A rigorous way to solve the problem, but it turned out to be the beginning of more severe trouble. When I try to install Fedora on the striped disks at first everything looks good. Both gparted and the installer see the linux device mapper partitions on the raid config + the unused space.But if I tell the installer to use the unused space, a mere 150 gig, then it tells me:
Could not allocate requested partitions: not enough free space on the disks. The same happens if I try the custom layout. When I start with a small 200 mB ext3 boot partition the same message appears.The ubuntu live cd with dmraid installed and the ubuntu alternate cd do not even see the devmapper partitions. Is the AMD-ATI chip on this new mobo not properly supported by Fedora/Ubuntu?
I am looking for an Open Source software making it possible to make a disk image of an Ubuntu installation as well as a Windows XP installation.I have checked out Clonezilla which almost solved the problem. However, the disk to which you restore needs to be the same size or bigger. I want to restore the whole thingo a smaller disk than the original.I am considering getting myself an SSD disk which will be considerably smaller than the 160 gb disk I have right now. I need it to work for Windows as well. Unfortunately I can't get rid of Windows quite yet I often participate in webinars on GotoWebinar and they do not support Linux ...
I have two 150GB WD Raptors stripped in an INTEL ICH10R RAID0 array. Windows 7 is installed on it in a 100GB partition, there is a 150GB secondary partition, a 100MB system reserved partition created by Windows 7 and there is about 25GB unallocated space to install a linux distribution.My problem is the fake ICH10R RAID which does work only at the moment for me with Fedora Core 13 : Ubuntu 10.04 breaks it but i do not like FC13 very much. So i Googled and Googled for installation problems on this fakeraid and dmraid is involved there is a bug in it at least in Ubuntu 10.04 and openSUSE 11.2, with 11.3 my RAID is detected -> i have a MD RAID popup.
My question is : How to install properly 11.3 on the space left on my fake RAID array without breaking anything although i have a full backup of my system. I don't understand anything of the partitioning part of openSUSE in general. Do i must activate MD RAID, i tried once and my NTFS partitions were not displayed but RAID was detected with the correct size. I am totally lost with this installer.
New to Linux and am wanting to install ubuntu 9.10 or 10.04 on a single separate 80gb drive. I have Windows installed on 2 80gb drives in Raid0 (nvidia controller) .I have installed 9.10 but Win7 will not load from the bootloader : gives me the error invalid signature. I've looked around and tried a few things to get it to load with no success.. is the Raid0 the issue?
If I try to install 10.04 it will hang and eventually errors out, I believe on the raid drive because it comes up with dev/mapper/nvidia_hhfbdccf1..
I recently ran across a client that wanted me to set up a new IDE Drive in his existing Red Hat Server. I reluctantly agreed to try. I am completely uneducated in Linux and could use some input. The server itself appears to be set up in text mode as all that I see is text after the initial boot up screen goes away. It, at present is set up in an old dell machine on a 3 Gig drive and all he wants is to be able to add a secondary drive to extend storage capacity. What do I need to do to prepare the drive and OS to accomplish the task? The secondary drive is 120 Gig. I reformatted the drive, as a fat 32 and installed it into the machine. The board sees it. The network does not
I am using ubuntu 10.10 (maverick meerkat), and i am loving it. While installing, i hadn't created multiple partitions. But now i feel the need to create a few. How can i repartiton the hard drive without reinstalling?
I have an issue with VirtualBox. My current setup is a machine running Fedora 10 with 1 Tb of disk space. I installed VirtualBox and created a fixed size disk image of 50 Gb for a virtual Windows XP64 OS. Now I require more disk space with additional 100 Gb. Is there a way to add another partition to the virtualized OS as if I added a new hard drive to the system?
In other words, I'd like to create another disk image by using additional space from the same physical drive and mount it under Windows XP in VirtualBox.
I want to move my "currently installed Debian and its all settings" to a USB flash drive. I am wondering what methods are available out there. I looked into Remastersys but it failed on my system so I am wondering if there is another method available?
I have an existing Fedora 15 system installed from scratch.I've ordered a harddrive identical to my SDA and want to add it to my existing system as a RAID1 setup.I've googled around and cannot find recent clear instructions how to accomplish this. I don't want to reinstall everything from scratch. It should be possible to create the RAID1 using the existing data disk and then mirror everything up?
I want to be able to add a physical drive to an existing filesystem, and PRESTO! That filesystem has more storage and/or redundancy. When one of the physical drives eventually fail, no problem, Ive lost some redundancy, I just have to install a new drive before another one fails.Lets assume I have 4 physical drives.*What Is This Configuration? *[URL]...But I am unclear how to get a logical volume that is mirrored and linear.
The last time I tried software RAID 1 (dm-x) under lvm, it was very fragile. Systemd could not start it,and then an update to mdadm put a stake through its heart. So I know that does not work.
I have successfully installed 11.04 onto my existing Windows laptop as files contained in the windows system and have dual booting.I would like to copy this installation to a 5gig fast usb stick so that I can retain all my settings etc
I have Fedora 12 installed on an external harddrive (USB) and have it configured the way I want. Inside my laptop I'm working on I have a Win 7 installation. My plan is to slowly migrate to Fedora and only use Win 7 when needed, so far so good..
I shrinked the partition on the internal drive holding using Win 7's built in tools and would like to clone my USB installation to the new partition I can now create, I work a lot with Macs in my line of work and there I always use Carbon Copy Cloner to make bootable backups, works like a charm..
As far as I know CCC uses rsync which is available for Linux as well so I guess I could use that? I plan on editting the Win7 bootloader later on to make it possible to boot from the new Fedora partition.
How would I go about it? The internal drive is GUID (or is it GPT?) formatted and loosing the Win 7 installation isn't an option of course.. All I could find were commandlines to backup certain folders or entire drives but I only want to backup my partition onto a different partition..
I'm a bit at a loss on this one. I couldn't get a drive from a former RAID5 array to format. I did a dd to write zero's to the drive and attempted to fsck only to be stopped every time with the error: Couldn't find ext2 superblock, trying backup blocks.. fsck.ext3: Bad magic number in super-block while trying to open /dev/sda1
Smartctl shows no problems with the drive (a Seagate 750GB), but I haven't removed it and thrown it in a windows machine to do seagates proprietary drive diagnostics yet. Running Centos5.6 .I've never had this problem before. The drive is not mounted and the old md device has been removed as far as I can tell. It could still be attempting to assemble the RAID5 with the 1 drive, but I didn't see it attempt to do so.
I have a SATA hard drive from a crashed system that was running Ubuntu 8.04. I want to install it in a Ubuntu 8.10 system and use it for file storage. How do I install and reformat it?
I have a running RHEL5 system, which has two physical disk drives, but is currently running on a single drive of the pair. The single drive the system is running on contains a root/boot partition and a swap partition. I would like to be able to add a mirror drive to this existing setup without having to disturb the running system (much). That is, I don't want to have to completely dump, reinstall (creating the mirror on the way up), and reload from backup media if I can avoid it. I have seen procedures that go as follows:
- the "extra drive" (the one not being used as the current root/boot device) is first brought under LVM control as a root object with one physical mirror attached.
- the data from the running root/boot drive is rsync-ed over to the LVM-controlled half-mirror, and boot records added.
- System rebooted on newly created half-mirror.
- Original root prepped to be second side of LVM mirrored root, and is added in.
Can one boot from an LVM disk directly? There seems to be some question on this that came up in other lists I had read online.
