Ubuntu Servers :: RAID 5 With Greater Than 2TB Capacity?
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?
View 8 Replies
ADVERTISEMENT
Mar 12, 2010
I have a total of 4 hdd's, 500gb 7.2rpm that I would like mirrored using raid 10. As you can see from the image, ubuntu 9.10 server isn't recognizing the full 2tb's. In fact, I'm not even sure about the configuration as I was thinking the HDD's would come up as four 500gb hdds. Instead I have the configuration above set and ready for Ubuntu to be installed on.
1. Is this typical of a server pre-configured from Dell(perc6 raid controller.
2.Why is ubuntu not recognizing the full capacity of the drives especially when it's a server install?
View 5 Replies
View Related
Feb 2, 2010
i want to install centos on a 3TB raid but during the installation, it said it could not boot GPT partition.
View 1 Replies
View Related
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.
View 4 Replies
View Related
May 18, 2011
1 Areca controller 1222 divided into 2x250Gb in RAID 1 for my Ubuntu installationm6x 2Tb in RAID 5 for my data (mounted as logical drive) resulting in 8Tb of available space (also visible in the disk utility of Ubuntu) Ubuntu 10.04 LTS
Now the problem; when I check the capacity in the file browser on my mounted data drive, I only see 5,1 Tb of total space.
View 1 Replies
View Related
Oct 6, 2010
I use Fedora 11, and have an external HD (USB) which has 4 partitions of 500GB each.
/dev/sdb1 is an NTFS partition that is exported to my windows machine using samba.
However, only 75GB is visible in windows (via rt.click properties).
Anyways, below is output from fdisk -l. why does windows see only 75GB of a partition that is 500GB in linux?
fdisk -l
Disk /dev/sda: 80.0 GB, 80000000000 bytes
255 heads, 63 sectors/track, 9726 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000ac734
[Code]....
View 3 Replies
View Related
Dec 30, 2010
I just bought a 3TB drive to use for backups and I'm getting a strange message when I run fdisk to get a listing of the drives.Here's what fdisk says about the 3TB drive:
Code:
Disk /dev/sde: 3000.6 GB, 3000592977920 bytes
255 heads, 63 sectors/track, 45600 cylinders
[code]....
View 9 Replies
View Related
Aug 5, 2011
I'm getting an error when I try and zip a large file on Linux because it is too large for zip to deal with. what commands I can use to get around this?
This is the error I'm getting:
zip error: Entry too big to split, read, or write (file exceeds Zip's 4GB uncompressed size limit)
It is a simple text file, log file in fact.
View 2 Replies
View Related
Jun 5, 2010
I need to run some software that seems to only work with Win2002, XP or greater OS.
Does Ubuntu have a flawless Windows emulator that is easy to use so I can use the software?
View 2 Replies
View Related
Mar 15, 2010
I have a problem with TFTP files greater than 32MB with Ubuntu. I haven't been able to find a fix for this issue. This has been a known issue for years and was corrected in the winodws world(AUGH !). when I did an apt-get install this morning it said my tftp was up to date.
View 1 Replies
View Related
Apr 17, 2011
I am totally new to unbuntu, I am trying to download ubuntu desktop but the message from IE 9 returns that "download greater than 12 hours"and that is that! my dsl connection is 6Mb and I do not know what to do.
View 4 Replies
View Related
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."
View 7 Replies
View Related
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?
View 9 Replies
View Related
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]....
View 2 Replies
View Related
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.
View 7 Replies
View Related
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
View 6 Replies
View Related
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.
View 1 Replies
View Related
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?
View 4 Replies
View Related
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?
View 6 Replies
View Related
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?
View 8 Replies
View Related
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.
View 3 Replies
View Related
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.
View 8 Replies
View Related
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.
View 5 Replies
View Related
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.
View 7 Replies
View Related
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).
View 6 Replies
View Related
Jul 6, 2011
I'm looking at building a small NAS setup for my home to hold all my media (DVD's, pictures, music etc..). I'm not too concerned with backups of it at this point as I have all the data elsewhere as it is, but would like one central spot to access it.
A friend of mine turned me on to Ubuntu to do this with but he's never tried it, so I'm looking to see if anyone else has done this or if there issues with it. I've used linux off and on for several years, but this would be my first Ubuntu install.
I'm looking at either using some older hardware I have sitting around, or something cheap like a small dell server (T310 or something). I'd get 4 2TB drives and just use them in a software raid 5 array. It would be accessed with a few different samba shares I'm thinking.
View 9 Replies
View Related
Sep 1, 2011
Quote:
EFI GUID Partition support works on both 32bit and 64bit platforms. You must include GPT support in kernel in order to use GPT. If you don't include GPT support in Linux kernel, after rebooting the server, the file system will no longer be mountable or the GPT table will get corrupted. By default Redhat Enterprise Linux / CentOS comes with GPT kernel support. However, *******if you are using Debian or Ubuntu Linux,******** you need to recompile the kernel. Set CONFIG_EFI_PARTITION to y to compile this feature.
Is this true? Ubuntu has no GPT support native to the server install? Never compiled a kernel. Is that of itself going to be a mind bender? How much doo doo am I going to get into if I haven't done it a few times? Trust me when I tell you its no thrill formatting and reformatting a 8tb raid drive or the individual disks if it screws up. Been on that ride way too long already. Need things to go smoothly. This is not a play toy server, but will be used in a business.
View 2 Replies
View Related
Apr 8, 2010
I have a huge RAID6 array 21TB+ already partitioned in GPT. This is to be used as the storage location for my company's backup server, and I want to access it as one logical volume. Is this possible with Centos5? I just discovered the product specifications for Centos5, and saw that the maximum file system size is 16TB, but LVM2 should support volumes up to 1EB. Is there any way I can make this work in Centos, or am I going to have to run a different distro?
View 1 Replies
View Related
Feb 12, 2011
I have an Apple Aluminium keyboard. To the left of 1 key I have the less/greater (< >) key, not grave/tilde (` ~). xmodmap does not work for me: layout switching (done with setxkbmap) resets my xmodmap changes. .Xmodmap file does not help either. How do I remap the tilde key?
View 1 Replies
View Related
May 15, 2010
I was having this issue with my server when I tried upgrading (fresh install) to 10.04 from 9.04. But to test it out after going back to 9.04 I installed 10.04 server in a virtual machine and found the same issues. I was using the AMD64 version for everything. In the virtual machine I chose openssh and samba server in the initial configuration. After the install I ran a dist-upgrade and installed mdadm. I then created an fd partition on 3 virtual disks and created a RAID5 array using the following command:
Code: sudo mdadm --create --verbose /dev/md0 --level=5 --raid-devices=3 /dev/sd[b-d]1
This is the same command I ran on my physical RAID5 quite a while ago which has been working fine ever since. After running a --detail --scan >> mdadm.conf (and changing the metadata from 00.90 to 0.90) I rebooted and found that the array was running with only one drive which was marked as a spare. On the physical server I kept having this issue with one drive which would always be left out when I assembled the array and would work fine after resyncing until I rebooted. After I rebooted the array would show the remaining 6 drives (of 7) as spares.
I updated mdadm to 3.1.1 using a deb from debian experimental and the RAID was working fine afterward. But then the boot problems started again. As soon as I added /dev/md0 to the fstab the system would hang on boot displaying the following before hanging:
[Code]....
View 7 Replies
View Related
