Ubuntu Installation :: Booting When RAID1 Array Is Present?

Feb 24, 2011

I'm sorry if this is the wrong section and if there is another thread on the matter. I searched but couldn't find threads with my specific problem. I've just installed Ubuntu 10.10 Server 64 bit which I intend to use as a internal file server.

The hdd setup is:
500gb system disk
1tb storage
2tb storage (2*2tb using built-in motherboard hardware RAID1) When the installation was complete and the computer rebooted I got an error message saying "error: no such disk". After re-installation I got the same message and I then tried disconnecting all the storage devices and it booted perfectly. I then tried connecting up the 1tb drive and again it booted as it should. But when I re-connected the RAID:ed disks the error message re-appeared.

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Ubuntu Installation :: Hard To Install The RAID1 Array In Brand New PC?

Nov 19, 2010

Like it says in the title, I am thinking it should be this hard to install the RAID1 array in my brand new PC. Here is what is happening. I have two brand new 1TB drives that I am attempting a new, fresh install of 10.10 on (in fact, the entire box is new). I am attempting to use the alternate desktop install so that I can have access to the manual partitioning (which is required to setup RAID 1, correct?).

I tried to use the guide here: [URL]... I followed the steps, but when I got the the very end (after selecting and creating the MDs) I get an error message stating that there is no root file system defined. I went back and checked all the steps and I am sure I followed everything in the guide.

Here are some quirks (not sure if they are bugs or not) In step 5 of the disc partitioning, it says to select the bootable flag and set it to yes (I am assuming). I press enter over that options, the screen flashes really quickly to a progress bar, but then comes back to the options screen and it still says bootable flag is off. No matter how many times I do it is says "off".

Also, and here is the bigger problem I think. - So the guide says to select the free space in each drive and then select Automatically Partition the free space, which I do, and it comes back and looks formatted accordingly - has 975.6 GB ext4 / and 24.6 GB swap swap. No Problem there.

BUT - whenever I do the same thing to the second drive, the partitions on the first seem to disappear. Meaning, it doesn't say free space, and has two partitions listed, but the / and the swap (last items in each row) have moved to the second drive partitions. I am not sure if this is how it is supposed to be since the pictures in the linked guide to not show what it looks like after that. THis is driving me crazy and I have to have it set up in RAID 1 and unsure as to what it is I am missing.

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Ubuntu :: RAID1 Array Fails On Reboot?

Sep 8, 2010

I did a search and couldn't find anything pertaining to this - if I've missed something please direct me in the right direction We have an Ubuntu box set up as a headless office server (latest desktop install of Ubuntu) and we recently set up two 1TB HDDs in a RAID1 array using mdadm - as far as I can tell it worked successfully and created /dev/md0 with an ext3 file system. After sharing the drive I can see it from the other office computers and could transfer data to and from the RAID array just fine.

I didn't figure out how to get it to automatically mount on boot so I restarted it to see if it would do so by default - however, when I restarted I couldn't see the RAID array any longer on the desktop and it came up as a 0.0kb RAID array in Disk Utility, saying it was broken. It wouldn't let me check it until I stopped and restarted the array.

After restarting I hit "check array" and it appears to be repairing the drives. What have I missed? What happened here? How can I fix it? What other info can I provide to assist:

sudo blkid shows:

/dev/sda1: UUID: "<snip>" TYPE="ext3" (system HDD)
/dev/sda5: UUID: "<snip>" TYPE="swap"
/dev/sdc1: UUID: "<snip>" TYPE="linux_raid_member"
/dev/sdb1: UUID: "<snip>" TYPE="linux_raid_member"
/dev/md0: UUID: "<snip>" SEC_TYPE="ext2" TYPE="ext3"

disk utility: RAID Array: Mirror (RAID-1), Metadata version 0.90.0, Partitioning: Not Partitioned, Components: 2...

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Ubuntu :: Raid1 Array Won't Start On Boot

Jan 2, 2011

I created a raid1 disk with Disk Utilities on with Karmic, then upgraded my system to Lucid then Maverick. This Raid disk is just a data store, I'm not booting off of it. when I reboot the raid1 disk does not start. I have to go into Disk Utilities, stop the array and then start it. Then it comes up and I can mount it. I ran dpkg-reconfigure mdadm and it created a valid entry in mdadm.conf. but the array still does not start on boot. I want to have it auto mount with fstab but need to make sure the array starts first.

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Fedora :: Can't Mount RAID1 Array?

Dec 29, 2010

I have just upgraded to Fedora 14 from an older version. I now have problems mounting my RAID1 array, which was operating correctly until now. This is a software RAID which was initially built under Fedora 10.The array is md0, and is made of 2 SATA drives (sdc and sdd) which have only one partition. The underlying filesystem is NTFS. The array is assembled correctly and active, as reported by /proc/mdstat and mdadm -D.When I try to mount the array, I get this:

Code:
[root@Goofy ~]# mount /dev/md0 /mnt/raid
mount: you must specify the filesystem type

[code].....

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Hardware :: Intermittently Clicking HDD On A RAID1 Md Array

Mar 13, 2011

One of my HDD on a 2 drive RAID1 md (linux software raid) is intermittently clicking. When this occurs, I can hear a loud clicking noise at uniform intervals and then it stops. Its like "click..click...click..click...click..click...click..click". You know what I mean

It does it about 4 times per hour. I believe this drive is about to die.

Until I find a replacement drive, can I run into problems with the data on the array? I believe the mdadm utility would tell me if the drive was faulty and once I replace the drive, it would auto rebuild the array (re=copy the data to the new drive)?

I have over 1.2TB of data on this array I really dont want to lose everything...

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General :: Create RAID1 Array With Given/fix HD Labels?

Aug 19, 2010

I have two HDs (let's say sda and sdb). Both are the same size and have the same partitions already (sda1/sda2/sda3 and sdb1/sdb2/sdb3). Basically they are ready to make a RAID1 array.

Writing with new udev rules, I could create and give fix HD labels with /sbin/scsi_id.

Example: For sdb1 I have a fix device name created under /dev as hd2_boot1, for sdb2 I have /dev/hd2_boot2 and finally for sdb3 I have created the device /dev/hd2_boot3.

With using the command "mdadm --create /dev/md0 --level=1 ....", I could create a RAID array.

But, when I check the status one of the RAID devices, like with the command "mdadm --detail /dev/md2", it still shows me as part of the RAID array the sdb* devices, not the hd2_boot* devices. Something like this:

I would like to see basically as member or the RAID array always the /dev/hd2_boot3 not the /dev/sdb3 (like above), is this possible?

Bottom line, I would like to keep the order of the RAID arrays depending their scsi ids, not depending their scsi numberings which is given by the kernel, since the scsi numberings (sda, sdb, sdc and etc.) can change depending the physical connection.

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General :: Recover A RAID1 Array Using Mdadm

May 12, 2010

I'm looking to recover a RAID1 array hopefully using mdadm. Ive not really used Linux much befor but I'm keen to learn to get my data back. Basically one of the disks in my Maxtor Shared Storage II (2x500GB sata) died and I could do with either rebuilding the array or getting the data off another way.

I have a spare machine I could use for recovery process. It has a spare drive but its only 120Gig, I also have a bigger 320gig disk but thats IDE not SATA. Do I need to purchase another 500GB sata drive or can I use either of my spares? If i do need to buy a new drive could I use a 1TB or 1.5TB or will it have to be 500? Next question is what is that best version of linux to use, I have knoppix 6.2 and Ubuntu (not sure on version) already. I noticed that mdadm isn't installed by default on Ubuntu.

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CentOS 5 :: Permanently Remove Drive From Md Array (RAID1)

May 14, 2011

I installed a distro based on CentOS 5.5 (FreePBX distro FYI). It used an automated kickstart script to create an md RAID1 array of all the hard drives connected to the machine. Well, I installed from a thumb drive, which the script in interpreted as a hard drive and thus included in the array. So, I ended up with three md arrays (boot, swap, data) that included the thumb drive. Even better, it used the thumb drive for grub boot so I couldn't start up without it. I was able to mark the USB drive as 'failed' and remove from each array, and even change grub around to boot without the usb drive, but now each of the arrays is marked as degraded:

[Code]...

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Hardware :: Determine The UUID Of 2 Disks That Are Assembled In A RAID1 Array?

Feb 17, 2011

I just experienced a HDD failure and while reorganizing the drives inthis machine I realized the benefits of UUID instead of /dev/sdX nomenclature. I am trying to determine the UUID of 2 disks that are assembled in a RAID1 array. right now they are /dev/sde & /dev/sdf with each only one partition. I tried ls -l /dev/disk/by-uuid but I get only the UUID of other disks, not the ones currently ID'd as sde & sdf. my mdadm.conf assembles several raid arrays all by UUID, but somehow, I cant recall how I got the UUIDs of the other HDDs at first...

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General :: Create A RAID1 (mirroring Only) Array With 3 Live Drives?

Jun 16, 2010

I'm not entirely a newbie, but this seems like such a simple question I'm not sure where else to ask it. I checked through the various HOWTOs and searched already and didn't find a clear answer, and I want to know for sure before we start investing in hardware. Is is possible to create a RAID1 (mirroring only) array with 3 live drives, rather than with 2 live plus a spare? Our goal is to have 3 drives in a hot-swap bay, and be able to pull and replace one drive periodically as a full backup. If I do:

[URL]

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CentOS 5 Hardware :: HDD Dma _intr Errors After Rebuilding Raid1 Array

Sep 2, 2009

I've got a mailserver set up in a raid1 array.I shut down the system to install a CD-ROM drive but forgot to change the master/slave settings (I know, don'tt say anything) and didn't realize it before Centos started booting up, so it booted the hdc drive from the array.I rebuilt the array using mdadm without any apparant issues but on subsequent bootup, I get the following error :

kernel: hdc: dma_intr: status=0x51 { DriveReady SeekCompleteError }
kernel: hdc: dma_intr: error=0x84 { DriveStatusError BadCRC }
kernel: ide: failed opcode was: unknown

[code]....

There doesn't seem to be any side effects to this but since that didn't happen prior, I figure there's probably something I didn't do properly since I'm fairly new to the linux world.My raid array was originally set up by the Centos instal software and is set up like this :

hda1 + hdc1 = md0 (boot)
Hda3 + hdc3 = md2 (/)

The other partitions are of the same size on each drive and are swap partitions.

PS : The drive is SMART capable and no errors appear during a self-test.

edit : Clonezilla also fails to boot properly although I don't know if its due to a software raid array in the first place or the errors in the filesystem. When only one drive was detected because of the jumpers, it booted properly.

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OpenSUSE Install :: Mdadm - Change Spare To Active In RAID1 Array?

Aug 7, 2011

I'm convinced that mdadm is going to be the death of me. I've wasted numerous hours on this so far without luck.

OpenSuse 11.4 on an old Supermicro box, creating a software RAID1 array across 2 x IDE 500GB disks. Creating /dev/md0 as a 250MB partition across /dev/sda1 and /dev/sdd1 for /boot, another 465GB partition across /dev/sda2 and /dev/sdd2 as an LVM partition to hold volumes for the various other OS filesystems. After the initial installation and configuration there were a series of mishaps with faulty IDE cables that had drives failing to show up at boot. Somehow, /dev/sdd2 got configured to array /dev/md1 as a spare drive. And nothing I've done so far gets it to show up as an active drive.

The obvious step of failing the partition, removing it, then adding (or re-adding) will bring it back as a spare. I've tried roughly a dozen different permutations of those same steps. The latest was to 'dd if=/dev/zero of=/dev/sdd2' to clear the partition. Thought this might be the trick - after the zero, mdadm -E /dev/sdd2 reported 'no superblock' and no md1 configuration.

So 'mdadm --add /dev/md1 /dev/sdd2' and it still comes back as a spare. Here is mdadm -D /dev/md1

/dev/md1:
Version : 1.0
Creation Time : Sat Jul 9 10:26:01 2011
Raid Level : raid1
Array Size : 488119160 (465.51 GiB 499.83 GB)
code....

I can't stop this array, the OS is running from there. I can't easily boot from CD to repair, all IDE ports have disks attached.

Does anyone have an incantation to promote a spare to active?

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Hardware :: Raid1 Mdadm Repair Degraded Array With Used Good Hard Drive?

Jun 27, 2009

I have a used but good harddrive which I'd like to use as a replacement for a removed harddrive in existing raid1 array. mdadm --detail /dev/md00 0 0 -1 removed1 8 17 1 active sync /dev/sdb1I thought I needed to mark the removed drive as failed but I cannot get mdadm set it to "failed". I issue mdadm --manage /dev/md0 --fail /dev/sda1But mdadm response is:mdadm: hot remove failed for /dev/sda1: no such device or addressI thought I must mark the failed drive as "failed" to prevent raid1 from trying to mirror in wrong direction when I install my used-but-good disk. I want to reformat the good used drive first right? I believe I must prevent raid array from automatically try to mirror in the wrong direction.

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Software :: Rebuilt RAID Array With Old Mount Points Present - File System Check Fails On Boot

Dec 2, 2009

I have one hard disk for my root partition and a disk array on a separate mount point. I rebuilt my disk array, but I didn't delete my original mount points beforehand because I was hoping it would just "pick up". So now when I boot up, the OS tells me that the filesytem check fails because it can't find the array to map to the mount point. I know that I need to edit my /etc/fstab and remove the line that defines my mount point on the disk array. But it appears to be read only filesystem when I am in repair mode. I can't force the write with vi.

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General :: Trouble Booting Up To LVM Partition On Raid1

Jul 10, 2010

I been trying all day to boot debian on a lvm partition on a raid1. I have found some howtos but they only show how to do it for one or the other not both at the same time. Using those howtos I think I have grub2 setup right the problem is my kernel. It has support for both LVM and Raid built-in. I setup the raid and lvm partitions while running that kernel. But when I use it to boot up the system on the lvm/raid it gives a kernel panic.

The OS is by itself on an old disk sda1. The raid1 is on two other disks sdb1 & sdc1. It is divided into 2 logical partition vg-root & vg-media. I just copied the OS onto vg-root. Then tolled grub to boot to it. The grub entry is like so..I tried setting root=(md0) but that didn't work either. I'm pretty sure the problem is with the kernel but I don't see why since it can it can see the raid and lvm partitions once it is booted up and both the raid & lvm options are built into the kernel so it should be able to see them at boot time.

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CentOS 5 :: Mistakenly Setup RAID 0 Array On / Instead Of RAID1 During Setup - Convert Without Loss?

Dec 15, 2010

So I didn't notice when I setup my CentOS 5.5 server that I left / as RAID 0 on md1. All the rest are RAID 1. Is there a way I can modify the array to RAID 1 without a risk of data loss? I'm glad I caught this before I setup any other services. I've only setup smb so far...

[root@ftpserver ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md1 16G 3.0G 13G 20% /

[code]....

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Ubuntu Installation :: Installation Of 10.04 With RAID1 - Encryption Fails ?

Jun 1, 2010

I just tried to install with Ubuntu 10.04 AMD64 Alternate on RAID1 and Encryption but after reboot the screen just stays black.

my system is a AMD Athlon 64 X2 Dual Core 4200+ on a Abit AN-M2HD Motherboard, and 2 HDs each 250.1 GB
i split the HD into
* 50GB for /
* 200GB for /home
* 1GB for swap
all get a RAID1
/home is encrypted with passphrase (Twofish 256, cbc-essiv:sha256)
swap is encrypted with random (Blowfish 128, cbc-essiv:sha256)

where can i check RAID and hardware compatibility?

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Ubuntu Installation :: After The Installation The System Cannot Autostart Raid1?

Oct 10, 2010

I just made a complete reinstall of my fileserver. After the installation the system cannot autostart my Raid1. For some reason it seams that only one of the identical disks are found by mdadm"disk utility" states "not running, partially assembled"If i immediately stop the raid in the disk utility I can restart it and mount it.some diagnosticsmdadm.confQuote:

# by default, scan all partitions (/proc/partitions) for MD superblocks.
# alternatively, specify devices to scan, using wildcards if desired.
DEVICE partitions

[code]....

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Ubuntu Installation :: How To Burn Present OS On DVD / CD

Aug 5, 2010

Recently, I've started to use Ubuntu operating system.. the last version 10.04 LTS. I downloaded the .ISO image file from the site and burnt a CD to use it back, but I was wondering now after I installed my Ubuntu and made all updates and upgrades to the applications and added all packages that might be useful for me, can or can't I burn the present system with all the add-ons that I've added on DVD/CD?? Instead of using the old CD that I made which is free of all packages and necessary programs.. or at least, is not there downloadable files from the internet that allow me to install the packages and the programs offline!! Considering that I might not be able to have an internet connection..

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Ubuntu Installation :: How To Setup Software RAID1

Sep 27, 2010

I recently set up an old desktop computer on my home network for use as a file server. I installed Ubuntu 10.04 Server on it and I'm slowly learning how to make it do what I want (I'm used to the GUI, so this is a bit of a jump for me).My plans are to put two 1.5TB hard drives in the computer (there's already a 160GB with the OS installed) and put them in a RAID1 configuration. This, as I understand it, will write all data to both drives, creating two identical drives. I'll only have 1.5TB total space for backup, but if one of the hard drives die, I can replace it without losing any data.

Hopefully I understand all that correctly. Now, my questions are how to actually set a RAID configuration up. I don't have a controller or anything, assuming I could do it off the two SATA ports in the motherboard (the 160GB is IDE) in software RAID.Once I have the two hard drives set up in RAID1, how do I allow the house to access the file storage?We're all on Windows 7 computers.If one of the hard drives fail, how will I know? Can I set it up so I receive some sort of notification? Also, how does the replacement process work; can I just pop the broken drive out and put a similar one in? Do I need to readjust any settings after replacing one?

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Ubuntu Installation :: Anyway To Re-partition Disks To Use RAID1

Aug 1, 2011

I just installed Ubuntu server edition to my computer (brand new, no OS) and finished installation. In the terminal I used apt-get ubuntu-desktop to install a desktop interface.In my rig, I have two 500GB HDDs. I set them up through my computer BIOS as RAID1 drives, yet as I understand I still need to configure the Ubuntu software raid for it to work correctly. Unfortunately, I already partitioned my drives! I used the easy way (guided with LVM or whatever) and let it do it for me. Now, RAID1 is very important to me! Is there anyway to repartition the disks to use RAID1, or do I need to wipe my computer and reinstall Ubuntu?

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Ubuntu Installation :: Already Present OS Windows 7 Not Being Detected / Fix It?

May 27, 2011

When I try to install Ubuntu 11.04 ( Not using WUBI ).. My already present OS Windows 7 is not being detected. More over I get two options,

1)Erase the disk and install
2)Specify the partitions

When I try to specify the partitions, my hard disk is shown.. but my 4 partitions are not visible.

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OpenSUSE Install :: Partitioning & Booting - (grub Won't Install On The Pci Express Card As It Is A Raid0 Array)

Jun 11, 2011

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??

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Ubuntu Servers :: Failure To Partition RAID1 During Installation

Jul 29, 2010

I have built a small test server. I am planing on using this machine a an email and web server to test out its hosting capacities. in the future I will build a larger and more well equipped version.

AMD Athlon x2 2.0ghz
2 160gb SATA drives (hardware raid 1, done through the Motherboard)
2 gb ram (dual channel)

Like I said small test server. I am trying to install 10.04 server edition. When I get to the point of partitioning it asks me to activate the raid so I do. I get through the guided partitioning and get ready to write the file system to the drives and the screen goes red and says that it has failed. On a side note, this works if i install it on the same drives without any raid configuration.

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Ubuntu Installation :: Moving From Another Raid1 W/o Losing Data?

May 15, 2011

I would like to move a samba fileserver from ClearOS5 to Ubuntu. It has raid1 (software) and I would like to save one partition from it, md3. The other partitions could be used for Ubuntu. How would I go about this so that I don't erase data from md3 and is it even possible?

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Ubuntu Servers :: Installing Software Not Present On Installation CD?

Jan 19, 2011

This is my first time on a forum and the first time I tried to set up a web server.I am following a tutorial on how to set up a web server here: [URL]We get to a part were I have to install a firewall. The tutorial suggests shorewall. The command I am told to use is sudo aptitude install shorewall. However is returned is could not find package shorewall. I have searched the net and could not find anything on my issue. I then attempted to search aptitude but no luck. I found shorewall online but how do I download it without a GUI.

This is also my first time having an OS that is only command line. I have done other things from the command line only before. Things such as computer science homework on the computer science servers.For simplicity, how do you install software off the internet on to ubuntu server without creating a CD or using a flash drive

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Ubuntu Installation :: The Disk Driver / Is Not Ready Yet Or Not Present?

May 20, 2011

I was upgrading to Ubuntu 11.04 and the laptop turned off.Once I rebooted, I got this Message :Code:The disk driver for / is not ready yet or not present continue to wait; or press S to skip mounting or M for manual recovery.My laptop Model: Toshiba Satellite A200.

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CentOS 5 :: /dev/mapper And 5 Installation With RAID1?

Sep 28, 2009

I am using CentOS 5.2. I am installing from disc on a machine with Intel Embedded Server Raid Technology. It has two 500 GB SATA drives. During the initial boot process, it sees that these two devices exist. However, after getting into the screen to partition and configure RAID, it just shows this:

Drive /dev/mapper/ddf1_MegaSR R! #0 (475879 MB) (Model: Linux device-mapper)

I want to do a RAID1 so that the disks are mirrored. However, I would expect to see both drives listed. I can select RAID to create RAID partitions, but I think I need to be able to see both drives in order to do this correctly.

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Ubuntu :: Booting After Installation (Dual Booting With Vista) - Error: No Such Devide Found

Jun 24, 2010

i decided to install ubuntu in my PC,i downloaded the .ISO image and i installed it in my USB. After trying it and all that i observed that i really liked it and i decided to formally install it to my computer in the hard drive. When i reached the partition thing,i selected to dual boot with Vista and select between each them in every startup,when i clicked FORWARD it gave me an error which i did not read(because,again im a noob) so i clicked cancel.

Today i wanted to go through the process again and now really install it,so again i went to the time zone part and i clicked forward but then,instead of taking me straight to the partition phase,it appeard a window saying "The installer has detected that the following disks have mounted partitions: /dev/sda ...." I clicked yes,to unmount this partitions so it took me to the partition thing,once there i selected the option to install Ubuntu with Vista and select between them i neach startup,then i clicked forward and went to the username/computer name process,once i finished i continued to the next part,the installation,but i selected to import all of my WIndows VIsta default user data,after that i clicked forward and went to the installation process,i went down stairs to eat soemthing while it finishes,i came back and it was finished,it asked me to reboot so i clicked in Restart Now.

When it tried to boot,appeared an error saying: Error: no such devide found: #################### Grub load(or something like that) grub rescue: and it was a command line,since there i havent been able to boot into vista or Ubuntu,im really scared because is the first thing related to OS installing ive done,so i booted my USB and ran the trial and right now im trying to find out what to do from that trial version.
I just went to the INSTALL UBUNTU 10.04 LTS application under the System>Administration Menu and found out that in the partition phase the Install and allow to select between both systems in eahc startup option,i dont know what to do,i foudn out that my HD has still all its data(MUsic/Videos/Folders/Programs/ect.)its just that i cannot boot from it. Also in GParted it appears as /dev/sda1/ and a warning icon besides it,also when i go into information, thers this warning there [URL]

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