Ubuntu Servers :: Installing 10.04 On RAID 1?
Mar 4, 2011
I am attempting to run Ubuntu 10.04 Server on RAID 1 and am consistently hitting the same issue when trying to boot the system for the first time (after what seems to be a successful install of the OS). I am creating the RAID 1 using the directions found in the Ubuntu Server Guide. The error I receive when trying to boot the system for the first time is...
Code:
mount: mounting /dev/disk/by-uuid/f35415ee-4c14-4eb1-995f-f19fbcd760c7 on /root
failed: Invalid argument
mount: mounting /dev on /root/dev failed: No such file or directory
mount: mounting /sys on /root/sys failed: No such file or directory
[code]....
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Oct 16, 2009
I have a custom server built with Intel motherboard and RADI 10. The RAID controller is on the motherboard. I'm about to install fedora 11 x86 64 bit on it. Should I be experiencing any issues with anything that any of you have come across? I did a checksum check on the iso files and those were good. Also, someone sent me this link..
[URL]
However, I have a hardware RAID, not software RAID.
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Feb 1, 2011
Could 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.
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Mar 17, 2011
I have a client with a pair of Supermicro 6025B-T servers that he wants to have Ubuntu 10.10 64bit Server running on for VM/Cloud experimenting. He needs these to be set up RAID 10. I can go into the Adaptec utility and make the array and make it bootable and get to the point in the installer where it asks me if I want to use the SATA array - then it gets to the partitioning screen and the array is nowhere to be found.
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Jan 10, 2011
I'm trying to install 11.04 and setup software raid on two hdd's in the process for the home partition. Even in the manual setup I don't really see any option to do this.
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Jan 11, 2010
I was recently given two hard drives that were used as a raid (maybe fakeraid) pair in a windows XP system. My plan was to split them up and install one as a second HD in my desktop, and load 9.10 x64 on it, and use the other for mythbuntu 9.10. As has been noted elsewhere, the drives aren't recognized by the 9.10 installer, but removing dmraid gets around this, and installation of both ubuntu and mythbuntu went fine. On both systems after installation however, the systems broke during update, giving an "read-only file system" error and no longer booting.
Running fsck from the live cd gives the error:
fsck: fsck.isw_raid_member: not found
fsck: Error 2 while executing fsck.isw_raid_member for /dev/sdb
and running fsck from 9.04 installed on the other hard drive gives an error like:
The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device>
In both cases I setup the drives with the ext4 filesystem. There's probably more that I'm forgetting... it seems likely to me that this problem is due to some lingering issue with the RAID setup they were in. I doubt its a hardware issue since I get the same problem with the different drives in different boxes.
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Nov 29, 2010
I am having trouble installing Ubuntu 10.04 on a HP Z600 with a two disc raid system. Is there a way to solve this without using the alternate cd (where the data files seem to be corrupted). The regular 10.04 cant find any drives on which to install, the 10.04 alternate cd�s all have corrupted files. I have tried downloading the .iso from two mirrors as well as from .torrent, all have data problems. The HASH checksums are fine, only the data on the burned discs are wrong. I have also tried using a USB install, but there are problems there aswell. At the moment I have win 7 on the disc as on the other partition, and have been using Ubuntu 10.10 (that is now an unbootable broken system), but have to downgrade to 10.04 becasue of software requirements.
The RAID seems to be an INTEL Raid . From HP homepage: Integrated 6 channel SATA 3 Gb/s controller with RAID (0, 1, 5 or 10) capability, optional SAS controller, LSI 3041E 4-port SAS/SATA, with RAID (0, 1 or 10) capability
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Oct 29, 2010
I have a server with an Intel S875WP1-E motherboard and 4 HD of 400Gb each. If i use the raid utility from the motherboard it doesn't appear during disk detection, so i disabled it. I've rebooted and launch installer from the DVD and it displays correctly 4 HD. I've configured them, installed the OS and installed GRUB in MBR (grub install /dev/sda /dev/sdb /dev/sdc /dev/sdd). But when i reboot it asks me to switch for a correct system disk.
I've look into BIOS configuration. If i make a raid array using the bios utility, i can choose any array in boot device priority, but if there is no array defined, i can't select anythig (but the DVD drive).
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Mar 9, 2009
I tried install Centos 5.2 (i386) on Dell PowerEge 2950 server with SAS RAID disk (RAID 5 on PERC 6/i created from six HDD, 1 TB each). I never installed Centos on a disk over 2 TB.
I find out that i need use gpt instead mbr. I tried use rescue mode + parted but after rebooting I got message "Can't boot from from GPT partition" whet tried install. But when the space is partitioned by installer, I can't boot up.I got msg PBR not found. My ask is: "Can I boot directly from GPT partition? If yes how do it?" Or even better "How to install centos 5.2 on disk bigger than 2 TB?"
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Dec 22, 2009
What are the things that i need to do to be able to install CentOS 5.3 on RAID 1 drive.I have tried to install other OS like Ubuntu 9.10 and lower and they all work fine.Problem is that, during the initial installation, it could not find any drive therefore i could not proceed with the installation.
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Oct 26, 2010
I'm trying to install GRUB2 on root partition under RAID 5. I tried using the alternate CD, but installation failed. Now I'm trying under the live CD and grub-install ... but I'm being told it can't find the device even though /dev/sda2 (root partition) and /dev/sda are mounted.I have 4 discs, each with a swap partition (/dev/sdX1) and a root partition (/dev/sdX2).
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Jun 29, 2011
I have a raid 0 setup with 2 x 1TB drives. I have an ASUS P8P67 LE motherboard and am using Interl RST for the Raid setup. I'm utterly ignorant of raid and therefore forgive any mistakes... I already had windows 7 installed and was attempting to dual boot ubuntu.
I installed Ubuntu from CD. The raid was picked up properly as only one drive by ubuntu. So it picked up the windows MBR and the main windows partition. I resized the main partition and used the "install ubuntu and windows 7 side by side" option. Installation went fine but once I restarted the PC I was welcomed by a grub rescue screen with the message: "error: no such device e196.....". Edit: I used the Windows 7 disc to repair the windows bootloader so I can now boot into Windows 7.
Before doing so I used gparted on the live cd to check the partitions on the drives. The only ones present were the MBR and windows one. So ubuntu seemingly didn't install... Although GRUB did... I was advised by someone on the ubuntu IRC chat to avoid trying to reinstall ubuntu at that point just in case there was an error in the partitioning process. I've since checked the state of the partitions from within windows and there's the MBR partiton, the windows partiton AND the partition that I created for ubuntu... 965MB of the partition that I created is listed as used space as well...
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Oct 30, 2010
I installed RC1, and never touched the disks that were raided previously, and the attached image is what i see for my raid array that was previously working fine.
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Mar 9, 2011
Basic Problem: I have been trying to install 13.1 (64-bit) and have not been able to get lilo to install.
Procedure:
1) partitioned drive /dev/sdc 1GB (Linux RAID) and 499GB (Linux Raid)
2) copied partitioning scheme to /dev/sdd
3) set up RAID-1 arrays md0 (sdc1-sdd1) and md1 (sdc2-sdd2)
4) write random data to partitions
5) set up LUKS on md1 (swluks)
6) set up LVM on swluks (80GB /, 375GB /home, 20GB swap)
7) ran setup, chose partitions, installed software
8) setup lilo (mbr, selected /)
9) TRIED to install lilo
[Code]..
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Mar 19, 2009
I'm working on a new server and it has an Nvidia SATA array controller with 2 250Gb SATA drives configured in a hardware array. When the first screen comes up I'm entering the option Linux DD for it to prompt me for the drivers but nothing ever happens. The screen says that it's loading a SATA driver for about 15 minutes and then the screen clears and has a plus sign cursor on a black screen. What am I doing wrong? The only driver that came with the HP server are for Redhat 4 and 5 and SUSE, will any of those actually work?
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Jan 16, 2010
I have three WD 1.5 GB harddrives. 2 of them already in a linear RAID also called Concatenated i think. (the same as JBOD). Can i add the third drive to the RAID without losing data? Update "Using mdadm software raid."
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Jan 26, 2010
I have two drive on my Ubuntu server. I have a 40GB IDE 5400RPM and an 80GB SATA 7200RPM.
Is it at all possible to RAID 0 the two of these drive? I know it's pretty unorthodox, but it's what I've got without having to buy anything.
If so, what are the limits, cons, and/or potential pros of doing a RAID of these two?
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Jul 26, 2011
I've had this server for a while and I've periodically received similar errors, but it's been worse lately. I'm trying to diagnose and similar posts have left me with 2, maybe 3, ideas about what could be wrong. Here is the setup: Ubuntu Server 10.10 maverick kernel 2.6.35-30-server Sans Digital TR8 8 bay raid - 2 port multipliers to esata outputs 8 1TB WD Caviar Black Syba PCI-e card with Sil3124 chipset - 2 external esata inputs I do not use the RocketRaid 622 card that came w/the enclosure because I had problems with drivers and configuration so I went with the SI chipset. The raid is configured with mdadm, level 10, running ext3 file system:
Code:
root@i5server:~# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md0 : active raid10 sdb1[5] sdg1[2] sdd1[7] sdh1[3] sdf1[1] sde1[0] sdc1[6] sda1[4]
3906721792 blocks 256K chunks 2 far-copies [8/8] [UUUUUUUU]
[Code].....
What's odd is that the raid dropped out and completely locked up the computer multiple times, then marked one of the drives as failed. I did a readd on the drive and it rebuilt witout issue. Ran e2fsck -f to clean up the problems it had when it crashed, but as soon as I do heavy read/writes the errors start showing up again. This is primarily a media server for music and movies, but also for backups and printing. Heavy read/writes are generally transcoding movies and music which is what I was doing when it failed.
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Apr 6, 2010
I'm having some (well, a lot actually) of problems trying to get OpenSUSE 11.2 installed on my home PC. I am attempting to set up a dual boot configuration with Windows 7 installed on an bios Nvidia RAID 0.I was able to shrink the partition in Windows, and rebooted onto the net install for OpenSUSE (the MD5 validated DVD install failed multiple burns with "Repository not found"). I get into the graphical installer portion with no problems off the net install CD. However, the installer is not recognizing that there is an existing RAID 0. It lists the 2 SATA disks in the RAID separately. I can click on SDA1, and both SDB and SDB1 and it shows the disks, but does not recognize any existing partitions. If I click on SDA I get an immediate segfault in YaST and drop back to the text mode installer menu. It is loading the nv_sata module just fine.
From forum searches and google it seems that this is not usually a problem. My motherboard is a Gigabyte GA-M57SLI-S4 with the Nvidia Nforce 570 chipset running an AMD X2 64 3800+. Removing the stripeset and redoing it as Linux software RAID is not an option, I do not have enough space for a total backup/restore. Anything I do has to be nondestructive to the existing Windows installation.I really want to have a linux installation but between the DVD installer failing and now this issue I am about ready to give up on it.
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May 17, 2010
I have a problem installing Ubuntu on an HP Proliant ML115. This server has a 1TB mirrored RAID setup (and 1 250GB drive), problem is, Ubuntu apparently doesnt like it, it detects the RAID but fails to partition the hard drives and the installation cant continue. I tried the guided partitioning using the whole disk (detected RAID array). Here is what syslog gives me:
May 17 22:32:30 main-menu[504]: INFO: Menu item 'disk-detect' selected
May 17 22:32:30 net/hw-detect.hotplug: Detected hotpluggable network interface eth0
May 17 22:32:30 net/hw-detect.hotplug: Detected hotpluggable network interface lo
May 17 22:32:31 hw-detect: Loading PCMCIA bridge driver module: i82365
May 17 22:32:31 hw-detect: FATAL: Module i82365 not found.
[Code]...
PS: Im very noob regarding this kind of stuff so detailed instructions please, also feel free to give configuration tips
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Jun 3, 2010
I'm having a problem with the installation of Ubuntu Server 10.04 64bit on my IBM xSeries 346 Type 8840. During the installation the system won't recognize any disk, so it's asking which driver it should use for the RAID controller. There's a list of options, but nothing seems to work. I've been searching the IBM website for an appropriate driver, but there is no Ubuntu version (there is Red Hat, SUSE, etc). I was thinking about downloading the correct driver onto a floppy disk to finalize the installation, but apparently no 'general' Linux driver to solve the problem here.
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Jun 15, 2010
I've recently completed a fresh install of 10.04 on a home file server and upgraded the hard drives in my storage array. My PREVIOUS hardware was:
Old version of Ubuntu (I forget which one exactly, but I know I had missed a few upgrade cycles)
3X 500 GB Seagate Baracuda's (for the array)
Areca 1220 Hardware RAID controller
Intel Core 2 Duo 6600
320 GB Seagate for the boot drive
I was running that hardware for about five years or so and it was rock solid. After the upgrade the hardware specs are:
Ubuntu 10.04
Areca 1220 hardware RAID controller
4x 1000GB Samsung
Intel Core 2 Duo 6600
320 GB Seagate for the boot drive.
The fresh install of Ubuntu 10.04 went remarkably well. The drivers for that raid controller are in the kernel, which is great. I was able to access the old array after upgrading Ubuntu. Now I am trying to create a new array with the four 1000 GB drives in a RAID 5. Obviously that gives a maximum storage capacity of 3 TB, greater than the 2 TB threshold that seems to be so important. I've been doing some digging and here is where my questions start:
it appears as though gparted doesn't support file partitions greater than 2 TB, correct?
it also doesn't seem as though parted supports ext3 or ext4, is that correct?
If this is the case, how do I create a partition with ext4 that is greater than 2 TB?
I can see the array volume in gparted (which is a relief) but it lists the size as 2.73 TiB, which I find curious because that is over 2 TB, but not the full capacity of the volume. I can also get to the volume in parted. But I see in the parted documentation that using the makepartfs command is discouraged and instead, one should use the command mkpart to create an empty partition, and then use external tools like mke2fs ( to create the filesystem.
how to proceed from here. What does the community think is the best course of action to create a partition of 3TB in ext4? Then I need to change fdisk to automatically mount the array at every log in, right?
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Jul 12, 2010
I'm setting up a web server but I have no experience with RAID. I would like to try this configuration if possible:
2 x HDD 500GB RAID1
1 x HDD 20GB (logs and tmp)
The old 20GB drive I would like to use it to store logs and temporally files (mounted in /var/log and /tmp respectively). With this I'm trying to reduce some disk usage in the RAID drives. In my idea, it would be better to write the access/error logs of the web server in a separated drive to the one serving the files which may increase speed... sounds crazy?
One problem is that during the installation, If I set the RAID automatically it will try to use my 20GB HDD as well in the RAID... Does it will work if I set the RAID first (removing the 20GB HDD) and then set the mount points in it after the installation?
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Aug 1, 2010
I'm in the process of setting up my very first ubuntu server.
Using 10.04 and has 2gb ram
I am using Ubuntu's software raid (mdadm)
It will be a file server, with 4 hard drives (3 in RAID5 and 1 as a spare)
All 4 drives have 2 partitions:
Partition 1 - 100mb
Partition 2 - The remaining drive space
I setup the first 3 drives' partition 1's to be RAID1 with the 4th drive's partition 1 as a spare. This is where I'm mounting "/boot" (it's my understanding that /boot cannot be on a RAID5). I setup the first 3 drives' partition 2's to be RAID5 with the 4th drive's partition 2 as a spare. This its where I'm mounting. I believe so far I'm setup correctly to be able to deal with a drive failure and the system should operate just fine. What I don't know what to do is with the /swap. I want to retain the ability to be able to operate with a drive going down. But I have also read warnings about putting /swap on a raid. How would you setup /swap?
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Dec 16, 2010
I am trying to build a storage server using software RAID. After getting writing RAID information to what I thought was the drives, I realized the configuration was not going to work. Since that time I have modified the RAID configuration more than once plus this is a project that was started a few months back. Between the time delays and currently written configuration, things are a confusing mess.
What I would like to do is wipe out all software RAID and start all over again. The problem is that I am unable to figure out how to get rid of it. I used DBAN to wipe out all four of my 1 TB drives which took a while. But still, the RAID configuration pulls up when I try to do a new install. Where is the RAID configuration data stored at if not on the HD? How can I scrub that information off so I can start all over again?
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Jan 11, 2011
I'm using a Intel mac pro running Ubuntu Server 10.4 64bit, and I have it working. Currently, I'm just using Ubuntu using bootcamp, and not using EFI. The OS drive is 250gb which I know is more than enough, but it was what I had free at the time. I added 3 1tb drives to the computer, but not sure how to create a raid with them. I've done some searching, but still haven't been able to get it done successfully.
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Mar 26, 2011
I have an Areca hardware RAID array that I'm trying to format & partition on a fresh Ubuntu 10.04 LTS installation. The OS drive is not on the RAID card, it's entirely separate. The RAID is a 6TB volume so I realize I have to use parted to format it, not fdisk (which I've always relied on).
My problem is that I can't figure out how to get parted to like my settings. It seems like everything I try gives me the warning "Warning: The resulting partition is not properly aligned for best performance." Here's what I'm doing:
Code:
(parted) p
Model: Areca ARC-1280-VOL#00 (scsi)[code].....
What start/end settings should I use to get a properly aligned partition? How do I know?I have tried a mix and match of 0, 0s, 1, 1s, -0, -0s, -1, -1s, 100% for my start/end with no success.
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May 13, 2011
I am trying to grow my array to make full use of my drives. I have a raid 6 using mdadm on my home server. The array used to consist of 6 1.5TB drives when it was created. Since then I've been replacing the 1.5TB drives with new 2TB drives. And now I have replaced the last 2 drives.
When I added the first 3 disks I did not use the whole disk for the raid partition but rather made it the same size as the 1.5 partitions. As it turns out this may have been a bad idea. (But it gave me another 3 partitions of 500GB that I turned into 1 disk using mhddfs.)
Now I'm trying to grow the array. I've been testing in a virtual enviroment on how to do it but I cannot find another method than this :
1) fail 1 disk.
2) re-partition the disk with the size of the whole disk.
3) re-add the drive as a spare.
4) start the now degraded array to let it resync.
5) wait quite a while. (aprox 5 hours)
6) start again from step 1 for the other disks.
7) use mdadm with grow command to enlarge the array
use resize2fs to fill array to max size
Now although since this is a raid 6, I keep some redundancy but I still worry about degrading the array so manny times and rebuilding the whole thing. I mean I read the thing out 3 or 4 times over doing this.
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Jun 4, 2011
I have installed ubuntu server LTS 10.4 on a HP MediasmartServer.It has four disks. On the first one I have the original HPFS/NTFFS partition (left untouched), a Linux ext4 partition for / a Linux SWAP partition and the rest of this first disk (sda) is part of a RAID 5 with the three other disks.I now have this first ext4 partion shown as full. Is there an easy way to give it more space without loosing the whole setup?I have 2TB of data on this server and everything is so fine.
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Jul 6, 2011
I've been running my dedicated server on Ubuntu 10.04 for 300 days non-stop so far (touch wood). I'm planning to purchase a dedicated server to host many large sites. The specs are Sandybridge Xeon with 16 bay x 2TB storage using RAID5 (Adaptec RAID 51645).I don't have experience with RAID, but I read that ext4 can only support filesystem up to 16TB, my plan for the system is to have 32TB of storage. How can I make Ubuntu run this configuration?
Also, can Ubuntu 10.04 recognize the Adaptec card? Going through Adaptec website there is no mention of drivers for Ubuntu (although many other distros are available).
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