Ubuntu Servers :: 4TB Raid Partition For Server ?
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
ADVERTISEMENT
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
Feb 26, 2011
I am finally, and happily ditching Windows IIS, SQL Server, and ASP in favor of LAMP. Not only will I save a bunch of money on operating systems but I've found php and MySQL development to be much faster than their Microsoft counterparts.Currently I have two W2008 and two Ubuntu servers running and doing virtually parallel tasks. I want to can the W2008 machines but I am not 100% sure of my Ubuntu mirrors.Everything seems to be working fine. I've copied tons of data back and forth as a primitive test but sometimes things work fine for all the wrong reasons. Here's where I get confused.
Question 1:Do I need to partition the RAID device (MD0) and then format it?From my experience this is necessary to get the device to mount.
Question 2:In this case was it also necessary to format the individual drive partitions?
Question 3:If I do a daily cat /proc/mdstat is this all I need to do to check the drive status.
Question 4:Is there any other check I can do to assure that the mirrors are created, mounted, and operating correctly?
View 3 Replies
View Related
Aug 9, 2011
I have been working in my spare time over the last few days, Had problems with the whole grub2 not installing on RAID 1. Then I found out that I had to have a separate non raid Ext4 partition on one drive with "/Boot" as mount point and install went though fine.
My question is, will the developers FIX this. I mean if I only have 2 x 2tb drives in teh pc as RAID 1, and the one fails with the boot partition the whole machine goes down. Kinda defeats the whole RAID feature huh.
I USED to run a windows network with RAID 5 servers, and windows never had a problem installing everything on the RAID. Or even setting up RAID 1 in the bios on the PC and installing XP or NT4 on the RAID 1. There was never a need for a separate non raid boot partition.
Do we need a separate RAID friendly/enabled Grub? I guess for now I will get a 250gb drive and install the Server OS to it, and setup RAID1 manually after the server OS boots. Then will make a ghost type image of the server in case that drive fails so I can quickly install a new drive and restore the image and get it back up and running again.
View 9 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
Jun 15, 2010
I've got 2 hard disk drives of 250GB, with this partitions :
All partitions are with format "linux raid software". I made 3 raid1 with them like that :
I want to clone them to news hdd of 500Gb, to have this partitions :
My problem, how can I resize partitions, before resize the array md2 with the command mdadm --grow /dev/md1 --size=max ?
After, how can I rebuild /dev/md2 without lost any datas ?
I'm using ubuntu-server 10.04 64bits.
View 3 Replies
View Related
Aug 26, 2009
I am trying to partition my server before installing CentOS and cPanel.I have hardware RAID 1/10 On RAID 1 I would have
/
/boot
On RAID 10 I would have
/tmp
/usr
/var
/var/log
2 GB swap
/home
Is it correct partionining setup?What should I have on RAID 10 ?
View 1 Replies
View Related
Jul 13, 2010
I am trying to install Ubuntu Server 10.04 on a home server I am making. I have 3 1-TB drives set up in RAID 5 via my mobo (ASUS M2NPV-VM). The installation detects that I have a RAID array, but when it goes to partition, all it shows me is the usb stick I am installing from.
View 1 Replies
View Related
Mar 3, 2011
I found a workaround of sorts. It looks like this is related to a 9.04 bug [URL] and the loopback workaround brings back the array. It is not clear how I will handle this long term.
Note: before using this technique, I used gparted to tag the partitions as "raid". They disappeared again on reboot, so I had to do it again. I am not sure how this is going to work out long-term
Note: I suspect some of this is related to the embedded "HOMEHOST" that is written into the RAID metadata on the paritions. The server was misnamed when first built and the name was changed later (cerebus -> cerberus) and the old name has surfaced in the name of a phanton device reported by gparted - /dev/mapper/jmicron_cerebus_root
I have a mythbuntu 9.10 system that I have upgraded from 8.10 to 9.04 to 9.10 in the last 2 days. I am on my way to 10.x, but need to make sure it works after every step.
The basic problem is that in its current incarnation, it is not recognizing the underlying partitions for one of the RAID devices, and therefore not happy.
As a 8.10 system I had 2 raid devices:
/dev/md16 -> /dev/sda5 and /dev/sdb5
/dev/md21 -> /dev/sdc1 and /dev/sdd1
/etc/fstab looked like this (in part):
/dev/md16 /var/lib xfs defaults 0 2
[Code]....
I don't *really* want to repartition the drive as there is a small amount of data loss between recent backups and what is on the drive, plus it would take me 2 days to move the data back.
View 2 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
Nov 3, 2010
I'm trying to resize an NTFS partition on an IBM MT7977 Server. It has a Adaptec AIC-9580W RAID controller. I was thinking about doing it with a gparted LiveCD/LiveUSB, but then I realised that they won't have drivers for the RAID controller. A quick google for "9580W Linux" doesn't return anything promising.
View 3 Replies
View Related
Apr 22, 2010
Ran 'do-release-upgrade -d'on my server running Hardy.No problems during the upgrade.Rebooted after the upgrade completed, and I was presented with the new plymouth screen. This sucks for servers.It sat there displaying the logo for ~5 minutes.Hit CTRL+ALT+F1 through F8 and didn't see anything on the virtual consoles.Finally figured out that I had to hit ESC on the plymouth screen to actually see what was going on.It said /dev/sdi1 had problems along with /dev/md0.It sat there forever with no fsck status and no HDD lights blinking.
SysRq+REISUB and tweaked the boot parameter to remove 'quiet splash' and appended 'S' for single-user mode.Got the attached screenshot.The box has been sitting like this for ~15 minutes.Not entirely sure what to report a bug against at the moment. Plus the somewhat-new requirement of running 'ubuntu-bug' is pretty retarded in this situation. (Yeah, I know I can add some string to the URL to get around it.Why is it such a pain in the *** to report a bug?)I'm going to do some more digging to try and find out what is dying during boot.The new boot process is a bit of a mystery to me still, so if anyone has pointers or any devs want more detailed information,
View 8 Replies
View Related
Jun 7, 2010
I'm having a great deal of time getting Lucid Server up and running on my Compaq Proliant ML330 G2. I've put a thread up in installing and upgrading, but people there don't seem to have any ideas about my problem. Since I figured there would be a higher concentration of server users here,
I've got a Proliant ML330 G2, 2 1.4 GHz PIV's
A dvd and CD drive on IDE1 (I'll explain why in a moment
A 65 gb hdd on IDE2
and four 40gb hdd's on hardware ide raid.
I've tried everything, but I can't get the sucker to boot. Installing to the raid array doesn't work. Some array setups won't partition, and others aren't even recognized as arrays. I've tried disabling the raid array and installing to the IDE hdd (my original intention) but I just get bad system disk errors. It would be exceptionally helpful if anyone has one of these boxes, or has worked on one, but I'm willing to take advice from any direction at this point.
View 3 Replies
View Related
Mar 9, 2011
We have been using Ubuntu Server at our department since several months now. It hosts a website, e-mail and nfs(only intra).
It was set-up as RAID 0 with two 1TB Hard drives but I want to change it to RAID 1 for fault tolerance. Is it possible to change existing RAID level? If yes can someone point me to the proper place?
I tried "mdadm" documentation and level set option is available but no explanation available that whether it is only while creating the array or it can change the level too.
View 1 Replies
View Related
Apr 15, 2010
I am rebuilding two microsystems servers and I need some advice to make my dreams come true.I want to setup the servers in a RAID configuration and want to install a GUI Linux application to manage a file server, manage a subnet, and host a Moodle on my subnet.I am planning to use Asus eee netbooks running Linux as my client computers. I basically need to be able to get my kids on the web and be able to have them use some open source office suite tools. No major crunching. I'll have two Macs for that.
View 3 Replies
View Related
Aug 30, 2010
We have configured software based RAID5 with LVM on our RHEL5 servers. Please let us know if its good to configure software RAID on live environment servers. What can be the disadvantages of software RAID against hardware RAID.
View 2 Replies
View Related
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
Jan 22, 2009
I have had no problem installing Fedora OS on any of my Dell servers prior to this post. Anyway, I wouldn't call this a problem but recently, we bought another DELL server with Quad Core, 4GB, etc... AND this model has 2 swappable SAS Harddrives.
I wouldn't call myself an expert but then again I am not a newbie too. However, I have never setup any RAID before and now I am forced to setup RAID1 on this server. So, in a way, I am a newbie in setting up RAID
Would someone please point me in the right direction as I have no idea what I am supposed to do to setup the RAID. FYI, I will be installing Fedora 10 64bit on this server. I would appreciate if you can start from the very beginning, ie. partitioning, formatting the harddrives during OS installation, etc..
View 3 Replies
View Related
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.
View 1 Replies
View Related
Mar 22, 2011
How long does hardware Raid card (raid 1, 2 drives)take to mirror a 1 TB drive (500gb used)?Is there a general rule of thumb for this?4 hours? 12 hours? 24 hours?
View 1 Replies
View Related
Aug 3, 2010
I am trying to connect a RAID Box to the server via LSI 8880EM2 RAID controller.The raid box is FUjitsu Externus DX60 with raid 1 configured.The server is Fujitsu Primergy SX300 S5 with LSI 8880EM2 RAID card.The external raid box is being recognised by the raid controllers bios.
The server runs CentOS 5.5 64bit. I have installed the megaraid_sas driver from LSI website and MegaCLI utility but CentOS still fails to see the box.MegaCLI utility, when launched from CentOS, recognises the raid box, CentOS does not(no mapping being created in /dev).
I have also tried to create a logical RAID0 HDD on one physical HDD(as seen by MegaCLI) with MegaCLI utility in CentOS.The result was success and the new logical drive could have been used, but when restarting the server, the controllers' bios fails with an error (not surprised(one logical RAID0 on one physical HDD)) and configuration is being erased.
Has anyone tried connecting 8880EM2 controller to a raid box with raid configured on the box, running it all under CentOS and what were the results.
View 3 Replies
View Related
Mar 27, 2010
I'm running Karmic Server with GRUB2 on a Dell XPS 420. Everything was running fine until I changed 2 BIOS settings in an attempt to make my Virtual Box guests run faster. I turned on SpeedStep and Virtualization, rebooted, and I was slapped in the face with a grub error 15. I can't, in my wildest dreams, imagine how these two settings could cause a problem for GRUB, but they have. To make matters worse, I've set my server up to use Luks encrypted LVMs on soft-RAID. From what I can gather, it seems my only hope is to reinstall GRUB. So, I've tried to follow the Live CD instructions outlined in the following article (adding the necessary steps to mount my RAID volumes and LVMs). [URL]
If I try mounting the root lvm as 'dev/vg-root' on /mnt and the boot partition as 'dev/md0' on /mnt/boot, when I try to run the command $sudo grub-install --root-directory=/mnt/ /dev/md0, I get an errors: grub-setup: warn: Attempting to install GRUB to a partition instead of the MBR. This is a BAD idea. grub-setup: error: Embedding is not possible, but this is required when the root device is on a RAID array or LVM volume.
Somewhere in my troubleshooting, I also tried mounting the root lvm as 'dev/mapper/vg-root'. This results in the grub-install error: $sudo grub-install --root-directory=/mnt/ /dev/md0 Invalid device 'dev/md0'
Obviously, neither case fixes the problem. I've been searching and troubleshooting for several hours this evening, and I must have my system operational by Monday morning. That means if I don't have a solution by pretty early tomorrow morning...I'm screwed. A full rebuild will by my only option.
View 4 Replies
View Related
Jan 19, 2011
I am tasked with setting up 3 out of the 6 servers and dividing up 500GB of space in the most efficient manner amongst the 3 servers. The space is in a pool which can be assigned to virtual drives. Each virtual drive can be assigned as disk0 or disk1 and so on to one or more servers. They'll be running CentOS.
On the second try I came up with this scheme:
shared sda1 -- /boot (ext3)
shared sda2 -- /home (ext3)
[code]....
View 5 Replies
View Related
Jul 21, 2011
I am looking to convert a raid 1 server I have to raid 10. It is using software raid, currently I have 3 drives in raid 1. Is it possible to boot into centos rescue, stop the raid 1 array. Then create the raid 10 with 4 drives, 3 of which still has the raid 1 metadata, will mdadm be able to figure it out and resync properly keeping my data? or is there a better way to do it?
View 2 Replies
View Related
Mar 24, 2011
I have a box that doesn't have a Raid controller or a software raid running currently. I would like to make it a RAID 1. Since it seems there isn't any IDE RAID controllers hardly around, I have another HD that is the exact model as the drive currently in the box running CentOS. Can I some how add the second drive and get the box to mirror from here own out? The box gets really hot and I want to be ready for a HD failure.
View 3 Replies
View Related
Feb 11, 2010
I have two hard drives inside an Ubuntu 9.10 machine, each with a data partition on. What I want to do is as I save files to one data partition partition (or delete them) I want the files copying/deleted automatically on the the other data partition. I do not want to start using RAID or end-of-day incremental backups.
View 5 Replies
View Related
Sep 6, 2010
How do I recreate an LVM raid 1 partition, without destroying data on the discs? I have a 650GB data partition which is a raid 1 array with ext3. Two days ago, the system (Ubuntu 9.04) started to refuse to write to it, claiming no space left on device - even if there is ca. 102GB free left, if the disk is 85% full (according to df)! Interestingly, removing a couple of GB did not help, after reboot the disk was again full..
I did the "tune2fs -m 0" trick and then forced file check on next reboot by "sudo touch /forcefsck" .. and the result is that the raid partition is gone. I have the two physical drives /dev/sd*, unmounted, but the /dev/md1 is no longer there. What can I do to re-create it, without losing the data? I realized that I ran tune2fs on the physical partitions /dev/sd* - was I supposed to run it on /dev/md1?
View 1 Replies
View Related
Jul 16, 2010
The ext4 file system creation in partition #1 of Serial ATA RAID isw_fjidifbhi_Volume0 (mirror) failed. Not sure what's wrong? How do I solve this? This happens after I enter my login details and click next. Then it fails on the install screen with this error.
View 2 Replies
View Related
Jul 16, 2010
Been attempting to install ubuntu on my Intel fake raid on a new PC.The installer sees the raid, but errors out:Quote:The ext4 file system creation in partition #1 of Serial ATA RAID isw_ehbgbddej_Volume0 (mirror) failed.This seem to be the EXACT issue described in this bug report:I read all the way down this bug report, and at the bottom it says:Quote:Launchpad Janitor on 2010-06-25Changed in parted (Ubuntu Lucid):status: Fix Committed → Fix ReleasedA few weeks ago, a fix was "committed" and "released". I had been working with an earlier 10.04 ISO, so I downloaded 10.04 from the web site today. Still the same problem.Maybe I'm just reading the bug report wrong? If it says the fix is committed and released, I would naively assume that it is fixed. Do I need to patch to apply the fix or something? Doesn't seem likely.
View 3 Replies
View Related
Apr 4, 2011
I am unable to hibernate my computer while using Ubuntu and I figured out the reason--Ubuntu is not using my swap partition. I would follow the existing tutorials on setting up a swap partition after installing Ubuntu, but since the volume uses hardware RAID 0, the swap partition is not assigned a /dev/ entry (like /dev/sdxx) and I am not sure how I can mount it.
Here is what I have:
Code:
View 2 Replies
View Related
