Hardware :: RAID 5 And Storing The Boot Data On The 1st Hard Drive?
Apr 13, 2009
how to set up a boot partition on the first hard drive separate from two RAID 5 configurations on a Supermicro server with 1-750GB hard drive for the boot partition, and 15-1TB hard drives for data. The 15 hard drives are split into two RAID 5 configurations (7 -TB drives and 8 1-TB drives). I will be installing CentOS 5.2, and the 15 Terabytes of data will store data, and the 750GB hard drive(on port 0) will only have the 100MB boot file. I am using 3ware BIOS Manager to configure the first array of 7 hard drives, and the second array of 8 hard drives (1 drive with boot information will not be included in the array).
to recap, picture this: I want to load CentOS on this server. /dev/sda1 (on the bottom left drive) needs to house the boot partition set for 100MB. The remaining 7 drives (the left half, not counting the boot drive) need to be set up as a RAID 5 array. The eight drives on the right (right half) also need to be setup as a RAID 5 array. After I configure this in BIOS, I run the CentOS setup disk in graphical mode. I get to the portion after the Language and keyboard setup where it says "Installation requires partitioning of your hard drive. By default, a partitoning layout is chosen which is reasonable for most users. You can either choose to use this or create your own. Select the drive(s) to use for this installation". The drives listed are:
"sda 5721980 MB AMCC 9650-SE-8LP DISK"
"sdb 1020 MB AMCC 9650-SE-8LP DISK"
"sdc 714218 MB AMCC 9650-SE-8LP DISK"
"sdd" 6675643 MB AMCC 9650-SE-8LP DISK"
When I choose "Remove Linux partitions on the selected drives and create default layout." or any other option, I get different errors. I notice when configuring via text mode I get better options to install. I can't install the boot drive separate from the two RAID configurations?
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Sep 8, 2010
Installed 2nd hard drive, both drives non raid. Computer recognizes it but unable to boot. Is this a grub problem?
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Nov 29, 2010
I have a spare harddrive that I want to store my videos on. They are in mp4 format. I'm using cfdisk to create a new clean partition on the drive. What filesystem type should i make it (linux,HPFS/NTFS,FAT16...)
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Jul 29, 2010
I burned the live version of OpenSUSE 11.3 (Gnome, 32bit) to a CD to test the compatibility of an HP Pavilion p6510f. Although Xubuntu 10.4 booted up fine, OpenSUSE did not. A message about RAID would appear (too briefly to read) and then the computer would reboot.I checked in the BIOS and found that the SATA drive has 3 modes: IDE, RAID and AHCI. The hard drive was set to RAID.
When I changed the hard drive mode to IDE, I was able to run the OpenSUSE live CD; but the change ruined my Windows installation. Windows doesn't boot under IDE or RAID mode. (I have reset the mode to RAID and am restoring the Windows installation.) Is there an option/argument that I can pass to the kernel so that OpenSUSE will work under RAID mode? (Since Xubuntu 10.4 was able to do it, I'm assuming OpenSUSE should be able to.)
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Oct 8, 2010
I'd like the final layout to have a Windows partition (will start out as XP and will become Win7 when I can afford yet another copy), a partition for Ubuntu, and a shared Data partition that I can use for all my files between both OSs. I think this should be fairly straight forward with Linux on a Primary partition with / and swap. Only thing is, from what I've read (and yes I know this is a bit old school) it might be a good idea to put in a /Home partition so that I can reinstall new upgrades and maintain settings. But I don't want to max out my 4 primary partitions so I can use a 4th partition as a kind of sandbox for OS testing without using VirtualBox all the time.
This leaves me in need of some advice, I've never used Fdisk and I was planning on just using the Ubuntu installer to do all of this, but I don't know if I can create /Home as a logical partition in the main Ubuntu partition and still have the benefit of being able to reformat /root without losing /Home. I might have just confused myself, because no matter how many guides and How Tos I read I still don't really get extended partitions, I understand logical vs. primary but extended is...confusing. I need the Ubuntu partition to be bootable, so it needs to be a primary partition...I think. Unless I can have: /boot, /, swap, and /Home...
Also, if Ubuntu can read NTFS, and Win7 can read Ext3, what should a do with /Data? Or should I just go with FAT32 and be done with it. (It's a big HDD btw, 640 GB, so /Data will be fairly large)
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Aug 13, 2010
I currently have a 1.5TB sata drive connected to my system, with data already on it. In the next few days I am planning to use mdadm to create a raid5 array with another 2 1.5TB drives along with the one I already have. Is it possible to create the raid without losing the data on my current hard drive? Obviously it will be backed up before hand just in case, but it would be nice not to have to restore nearly a TB of data after raid'ing the drives.
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Apr 7, 2010
I am trying to create a RAID data drive for my system but I am having setting it up since I am a total linux noob.
The system has 3 physical HDD-s:
1. 320 GB (has functional Ubuntu 9.10 installation) attached to a PCI SATA card
2. 2TB on motherboard
3. 2TB on PCI SATA card
I want to create a software RAID1 of disks 2 and 3. So far I have used the Palimpsest Disk Utility:
- Created a GUID Partition table on both disks (2, 3)
- Used File -> New -> Software Array, made sure both my drives were included
- Once Palimpsest listed the RAID Drive as a Software RAID Array, I told it to create Ext3 filesystem on it
Well.. at least thats what I thought I did. At this point I have been able to mount the RAID drive and put files on it. However when I look at its information in Palimpsest, I am told that the drive is not partitioned. Both RAId components /dev/sda1 and /dev/sdc1 are reported to be in Sync, but the RAID Drive's own state is 'Running, Resyncing @ 45%' (and lowly growing).
My questions are: Is this a normal setup or did I do something incorrectly? Why is the drive reporting to have no partition? And howcome I can use it if it does not have a partition? I have found the command line based configurations to be a tad too confusing to follow, so I have tried to stick to graphical tools - is this a hopeless cause in Ubuntu or is it possible to achieve what I want to do without command line? I will list some info on my disks below - perhaps this offers more insight to those of you more familiar with Linux.
Code:
mindgamer@mind-server:~$ sudo lshw -C disk
[sudo] password for mindgamer:
*-disk:0
description: ATA Disk
product: WDC WD3200BEVT-0
vendor: Western Digital
[Code]...
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Oct 17, 2010
I was using a Buffalo LinkStation Duo to store pictures and the OS in the unit failed. As far as I know, the data on the two 1 TB drives is fine, and since Buffalo uses a Linux kernel in their LinkStation and the format is xfs, it should be possible to get the data off if I can mount one of the drives on a Linux box. I've put one of the drives into an external USB enclosure and attached it to my Linux system, but I cannot get the drive to mount, probably because it is one element of a Raid 1 array.
Most of what I can find on the Web concerns setting up a new Raid array, not creating an array around a drive that already contains data. I have installed mdadm, and I'm running Mint Linux release 9 (Isadora) on an Intel box. When I run mdadm -D /dev/sdb or sdb6, the device and the partition where the data is located, it reports that the device does not appear to be an md device. I'm not sure what that means. Any help would be greatly appreciated, as I've got around 13,000 photos on these disks that have no backup (I figured what could go wrong with mirrored copies?).
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Jun 1, 2010
I had to recently reinstall ubuntu because 10.04 started acting up on me. I reinstalled 9.04 but I don't know how to mount my RAID drive without messing with the data that's already on there. I have the UUID for the RAID but fstab isn't able to find it. I also previously used RAID software but I don't remember which one I used. how to mount my drive so that ubuntu can see it?
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Jun 5, 2010
I have never preformed a rebuild of an RAID array. I am collecting resources, which details how to build an RAID 5 array when one drive has failed. Does the BIOS on the RAID controller card start to rebuild the data on the new drive once it is installed?
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Nov 3, 2010
After keeping my old (laptop) computer going for 8 years, I've finally taken the splash and ordered myself a new PC, well the compoents any way to build myself a desktop this time.
I've just got a couple of questions.
I've got a 60GB SDD and a 1TB HDD. On the SDD I was planning on partitions for Ubuntu Swap Window partition, to run a Virtulisation, not dual boot.
Performance wise, is it best to install / on the SDD and /home on the HDD or /home on the SDD as well and just move music and videos ect to the HDD.
Just to complicate things, when ordering the HDD there was an offer to get a second 1TB HDD for an extra 11, so now I have 2. I was planning to set these up as RAID 1, which I believe I can do via the alternative install.
What would be the best way to then backup / . I guess it must be possible to schedule an image of/ to be copied across to HDD is it?
I did hear that RAID was a bit iffy in ubuntu, but looking about on the net things seem to be better 9.10 → Also the boot disk isn't RAID.
Are there any RAID or SSD issues I should be aware of?
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Mar 16, 2011
I am on Ubuntu 10.10.I installed it on a 500 gig hard drive.In the future i want to software RAID(I did it in the past using the alternate version of ubuntu from the installation process), is it possible to add the new hard drive later and RAID later or i need to reformat?I am talking about software RAID.
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Jul 21, 2010
In my system i have 3 250 GB Hard drives in a RAID 5 configuration. unfortunately, i cannot see this volume in "Computer", so i am unable to access any of the files on the volume. wierd thing is that when i enter disk utility, it finds the drives, and recognises them as a RAID volume. any ideas on how i can access the files on this drive
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May 30, 2011
Every time I reboot my server, one of my hard drives drops out of the RAID5 array. I'm pretty sure that there's nothing wrong with the drive itself. I bought all three drives at the same time, and they are identical in make/model/capacity. While the server is running, it's smooth sailing. However, whenever I shut down or reboot, I get an email message that the array is degraded. It's always /dev/sda1 that drops out of the array. I can always rebuild the array by adding the partition back in, but it's a bit of a pain. Any suggestions on how to troubleshoot this?
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Mar 12, 2010
I would like to setup a CentOS file server with LVM and Raid1. Having 6 x 500GB drives, 4 x 1GB Ram and a Quad Core Cpu, I am considering to configure 3 hdd as LVM then raid 1 to the remaining 3 hdd's.
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Jul 28, 2010
I have installed RAID 1 with mdadm and it seems to work looking att /proc/mdstat..I wanted to test the system, so I removed the power cable for one of the disks. When I startup I get this message:
Primary hard drive 0 not found...And cannot start. I'm not sure if there is something in BIOS or in the RAID config? Any ideas?
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Dec 22, 2010
i have harddrive on which raid 5 is configure and no file system is configured.so i want to access the data on auto raid component harddisk.could any one telme how to access auto raid component hard drive.when im connectingto my laptop its not opening.when i check in disk analyzer its showing auto raid component harddrive.please helpme to access data inside the raid drive.
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Aug 14, 2010
I have an Aspire One with Linux operating system.
I have an external hard drive that I want to save data to from my Aspire One however when I try I get a message that the external hard drive is full.
I know it isn't full and when I use the external hard drive on my other pc with Window 7 it is fine.
I am assuming my problem is something to do with the ACER Aspire One
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Jul 4, 2010
I have recently gotten hold of a device that helps me plug my old ATA/IDE hard drive to my computer and view my old files that I wish to recover. I am using Ubuntu and the harddrive that I wish to retrieve the data from also has an Ubuntu install on it. The files I wish to recover are old .doc files, which I want to keep to remember my old writings.
The problem I have encountered arises when I wish to open some of the files. The icon for some of the files, which happen to be my best writings, has an X on the top right, indicating that I cannot view the contents. When I click on the files, the following error message pops up: "Access to /media/c885571b-a6e5-4a2d-937a-78af7050910/george/Courses/hist388/Passion.doc was denied."
Now, I am guessing that I need to be able to log in as superuser or something to be able to access these files, so I logged in my terminal as super user by following the instructions outlined on this page: [url]
I still did not have the sufficient access required to be able to open the files that I would like to retrieve.
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Sep 27, 2010
I have the strangest issue where my HDD reports full, but I can only account for about a tenth of the data.
Specs:
Ubuntu 10.4
laptop Toshiba Tecra A11
HDD 250GB
4Gb RAM
/home 20.3GB
/usr 2.4GB
/var 742MB
/lib 132.9MB
/opt 71.3 MB
/boot 15.4MB
/etc 14.2MB
sbin 7.4MB
bin 6.4MB
The rest are below a MB. This system is not a dual boot so 241Gb is ext4 and 8.9Gb is Extended and 8.9GB is Swap. This system has been loaded for about a month, when I initially loaded it there was 230GB free.
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Jul 28, 2011
So, I recently acquired a second hard drive (1.5 TB) and I wish to partition Ubuntu 11.04 with Windows 7. I've set everything up properly and using the Disk Utility in my System Settings I've created a 1 TB partition which I want to use for Linux. I think it has the proper partition type but how do I exactly go about transferring all my files from the hard drive I'm using now to the partition I would like to have?
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Oct 3, 2009
Im using rhl 5 on my new hard drive,i want to transfer data from my older hardrive (which has windows xp installed,one partition has fat32 and another has ntfs filesystem) to the new hardrive...
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Jul 19, 2010
I have a Seagate 1TB external USB 2.0 hard disk which contains 740 GB of data. Everytime I connect, it shows the memory occupied and the remaining memory(190GB)..but when i try to access the folders inside they read empty... nothing is seen in the folders.. I am unable to read any data from it or write to it... Same is the case with Windows When I run self-test in Linux ubuntu I get
Reallocated sector count
threshold: 36
Normalized: 61
Worst: 61
value: 6488
Current pending sector count:
Normalized:1
threshold: 0
worst: 1
value:2036
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Oct 4, 2010
My friend just got a gaming laptop that he won't let anyone else use (his last one got infected when his girlfriend surfed on it for just one hour -- he refuses to use antivirus since he claims he knows how to keep clean, but he doesn't trust others).
Because I used Linux a bit once, I said to him what if I could promise not to make any changes to your hard drive, and I told him that I was pretty sure I could boot to a live cd and then only write files to a usb key. He's actually willing to let me try (I showed him some linux sites I was looking at, and he believes me that we can do this).
1) Is there anything I either MUST do or else must NOT do to make sure I make no changes to his laptop's hard drive? And so that any changes are only going to go on the usb drive I hook up?
2) Since he's got an i7 processor, I assume I should get a version of ubuntu that supports 64 bits, right?
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Jul 30, 2009
I've got an old EIDE hard drive that used to be used for a dual-boot WinXP and Linux (not sure what version - either RH9 or FC1), and I'd like to pull some data off it. That computer died, and I reformatted the Windows partition, but left the Linux portion alone. My current Linux (FC10 + XP) computer uses a SATA hard drive, and I'd like to get the data from the old drive to the new one. I've connected the hard drive normally, jumpered as a slave drive. Linux now boots normally, but I can't access the older hard drive. I tried the techniques in the following thread: [url] and commented there (with more info), but I thought I would be more likely to get a response by starting a new thread.
Here's a summary of what happened: ran "fdisk -l": the command saw both hard drives ran "tail -f /var/log/messages" and got the following: Jul 30 16:00:44 localhost kernel: EXT3 FS on sdb8, internal journal Jul 30 16:00:44 localhost kernel: EXT3-fs: mounted filesystem with ordered data mode. Jul 30 16:00:44 localhost hald: mounted /dev/sdb8 on behalf of uid 500 sdb8 was a FAT partition I had set up for moving files back and forth between XP and Linux (none of the other partitions were reported). ran "vgscan", which only returned one volume group When I ran FC10's Local Volume Management tool, it sees the hard drive and its partitions, but reports them as "Uninitialized Entities".
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Jun 26, 2010
Using F12 with a LVM Volume, Single disk with OS on and boot partition. The OS HDD is getting i/o errors, but will still boot to the login screen. I've removed the HDD and connected it to a Fedora Live OS on my laptop, connected the HDD and it registers as :
[root@localhost]# fdisk -l /dev/sdd
Disk /dev/sdd: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000e0069
Device Boot Start End Blocks Id System
/dev/sdd1 * 1 26 204800 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sdd2 26 30401 243991201 8e Linux LVM
And it tried to mount /dev/sdd2 to view and see if I can recover some files.
[root@localhost]# mount /dev/sdd2 /mnt -t ext4[root@localhost james]# mount /dev/sdd2 /mnt -t ext4
mount: wrong fs type, bad option, bad superblock on /dev/sdd2,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
Any way to mount the partition to allow me to try and get some data back, or if trying to do a full backup of the drive you can get it to ignore i/o errors.
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Apr 25, 2010
I am trying to transfer files from a SATA hard drive with Windows Vista (Home Premium) installed on it. Some files I can easily copy over, others just say Access Denied.
I'm sure permissions is part of the issue, unofrtunately Windows is unable to boot at all (surpise surprise) so I can't adjust anything from within in. I know with XP drives I can easily copy and paste onto my Ubuntu machine. I'm using a SATA to USB converter that let's me plug it in and my desktop reads it like an external hard drive.
I've gone into the properties and under permissions it shows my account as having access to Create and delete files under folder access amd "---" under File access. My group and others show None and --- for Folder and File access. I can post a link to a screenshot tomorrow. I've tried to also select Read and Write for File access but it goes back to the dashes before I can apply it.
I am running 64 bit Ubuntu 9.10 and do not have the sharing aspect installed. Any questions please feel free to ask me.
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May 22, 2010
I'm running 10.04 LTS (64 bit) During a recent attempt at dual booting Windows 7, the Windows installer made a boot partition on the wrong drive, formatting the drive, and therefore destroying all my data.
The original partition was NTFS, and the new (unwanted partition) is NTFS.
Is there something in Linux I can do to recover the data that was there, or am I going to have to install Windows on yet another drive and use some Windows tools?
The data on this drive is extraordinarily important, containing ten years of digital photos, my source codes, and musical compositions (protools sessions etc).
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May 24, 2010
Can not save data to external usb hard drive
formated and mounted on Ubuntu 9.10
visible on desktop /Dev/Sdb1
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May 28, 2010
I should have seen this coming when I lost the ability to boot windows, or mount that drive from ubuntu. But now I think my hard drive has failed. Is there any way to retrieve the data from the hard drive, or my settings and the like for ubuntu? I'm at a loss for what to do as i'm booting from a CD right now =X.
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