General :: RAID 1 Error / Md2 Is Showing On One [U_]?
Dec 17, 2010
I had just configure RAID 1 on my IBM X3400 Server ..Partition information is md0 boot , md1 swap and md2 is root ....but after resyn when i run cat /proc/mdstat I realize that md0 and md1 is ok and present with [UU] status. BUT the md2 is showing on one [U_].. that means my root partition is not properly in RAID 1..
Please suggest how can i make it active in both drive. Or i need to reinstall complete system again. Screen shot attached
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Apr 8, 2010
i have cretaed RAID on one of my server RAID health is ok but its shows warning. so what could be the problem. WARNING: 0:0:RAID-1:2 drives:153GB:Optimal Drives:2 (11528 Errors)
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Dec 12, 2008
I would like to know when usb inserted, its showing cant mount when i clicked details its showing bad blocks in beginning , and smething in /dev/sd6. Can i knw why usb drive cant be mounted automatically , even if its set to do so, and to cope the error mentioned above
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Aug 28, 2010
I am using Ubuntu 10.04 x64. I am not trying to install Ubuntu on a RAID 1 drive like all of the guides are for. I have a RAID 1 array that I am using for data storage. In windows it shows as a single array just fine. In linux it shows as 2 separate drives. I don't care how they show up to be honest I just have to data written to one drive written to the other automatically as well so my RAID isn't screwed up. Looking through different articles and forums I find a lot of stuff saying that it should show up under /dev/mapper/dxxx or something under /dev/mapper. All that shows up there for me is a device called control which doesn't seem to do something.
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Oct 29, 2010
this is my fdisk -l
Code:
Disk /dev/sdc: 750.1 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders
[code]...
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Jul 18, 2011
I have a raid5 on 10 disk, 750gb and it have worked fine with grub for a long time with ubuntu 10.04 lts. A couple of days ago I added a disk to the raid, growd it and then resized it.. BUT, I started the resize-process on a terminal on another computer, and after some time my girlfriend powered down that computer!
So the resize process cancelled in the middle and i couldn't acess any of the HDDs so I rebooted the server.
Now the problem, the system is not booting up, simple black with a blinking line. Used a rescue CD to boot it up, finised the resize-process and the raid seems to be working fine so I tried to boot normal again. Same problem. Rescue cd, updated grub, got several errors: error: unsupported RAID version: 0.91. I have tried to purge grub, grub-pc, grub commmon, removed /boot/grub and installed grub again. Same problem.
I have tried to erased mbr (# dd if=/dev/null of=/dev/sdX bs=446 count=1) on sda (ide disk, system), sdb (sata, new raid disk). Same problem. Removed and reinstalled ubuntu 11.04 and is now getting error: no such device: (hdd id). Again tried to reinstall grub on both sda and sdb, no luck. update-grub is still generating error about raid id 0.91 and is back on a blinking line on normal boot. When you'r resizeing a raid MDADM changed the ID from 0.90 to 0.91 to prevent something that happend happened. But since I have completed the resize-process MDADM have indeed changed the ID back to 0.90 on all disks.
I have also tried to follow a howto on a similar problem with a patch on [URL] But I cant compile, various error about dpkg. So my problem is, I cant get grub to work. It just gives me a blinking line and unsupported RAID version: 0.91.
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Feb 3, 2011
I have a motherboard with the following chipset Intel 945GM + Intel ICH7R Chipset
This board: http://emea.kontron.com/products/boa...6lcdmmitx.html
I have two 320GB HDDs setup in hardware raid as shown below. But in gparted they are showing as two seperate drives. Why is this?
Raid setup:
GParted
fdisk -l
What am i doing wrong here?
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Mar 11, 2010
I have 4 hard disks. 2 pair of RAID 1 (mirror). Both use the same RAID controller - Intel Marvell.When I boot, this is what is listed in /dev/mapper/:
Code:
crw-rw---- 1 root root 10, 59 2010-03-11 20:58 control
brw------- 1 root root 252, 0 2010-03-11 20:58 isw_bbjfjjdcg_Volume0
[code]...
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May 12, 2010
Earlier i was using red hat on my laptop..then i installed windows 7...so grub is replaced bt windows boot loader....nw it is showing grub error...how to remove this grub error....so that both can work fine?
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Apr 24, 2010
I shall start off by saying that I have just jumped from Windows 7 to Ubuntu and am not regretting the decision one bit. I am however stuck with a problem. I have spent a few hours google'ing this and have read some interesting articles (probably way beyond what the problem actually is) but still don't think I have found the answer.I have installed:
Distributor ID: Ubuntu
Description: Ubuntu lucid (development branch)
Release: 10.04
Codename: lucid
I am running the install on an old Dell 8400. My PC has an Intel RAID Controller built into the MB. I have 1 HDD (without RAID) (which is houses my OS install) and then I have 2 1TB drives (These are just NTFS formatted drives with binary files on them nothing more.) in a RAID 1 (Mirroring) Array. The Intel RAID Controller on Boot recognizes the Array as it always has (irrespective of which OS is installed) however, unlike Windows 7 (where I was able to install the Intel RAID controller driver) .Does anyone know of a resolution (which doesn't involve formatting and / or use of some other software RAID solution) - to get this working which my searches have not taken me too?
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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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Oct 28, 2009
While i installed rpm package its showing error of failed dependencies n in another case cant create transaction lock on /var/lib/rpm_db.000
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Mar 13, 2010
I just expanded my raid 5 array from 3*2TB to 4*2TB and mdadm made the grow successfully and shows an md0 dev with the size of 6TB usable data. Now my problem is that Debian (Lenny) dosnīt show the right amount. See below
######### MDADM DETAILS OF ARRAY ##########
> mdadm --detail /dev/md0
/dev/md0:
Version : 0.90
Creation Time : Mon Dec 14 22:30:46 2009
Raid Level : raid5
[Code].....
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Jan 6, 2010
I recently installed Fedora 12 for use with Amahi HDA. Before installing on the Hard drive I used the LIVE CD to test it out. While using the LIVE CD I could see all my HDD's. My file system, my 2nd Hard Drive, and my Raid 0 Configuration. (2 250GB drives) and could browse all my files on those drives.
After installing the full version on my hard drive, my RAID drives are showing up as seperate drives. I have a Asus P4P800 board using hte SATA raid. I know its FAKERaid and not a true hardware raid.
My goal is to restore the Raid in Fedora and make those drives active. However, i dont want to lose any of the data on those drives. To make sure I wasn't an idiot, i rebooted withthe LIVE CD again and verified that I could see the Raid Array.
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Sep 27, 2010
I have been trying to upgrade my server to Ubuntu 10.04 since it has come out, but I hit a roadblock with my hardware RAID I have two JBODs that work perfectly in Ubuntu 9.10 x64 - but show as seperate, unformatted partitions (one per hdd) in Ubuntu 10.04 x64. Here's the relevant portion of my fstab:
UUID="1fac4a2c-6a2e-4278-bab4-c7179c8720ee" /media/Motherload ext4 exec,auto,async,rw 0 2 #4TB-ext4-/dev/mapper/pdc_cabedbfaef1
UUID="31f1f023-e6a0-4b5e-b9d9-0a46011e7fa0" /media/Fry ext4 exec,auto,async,rw 0 2 #3TB-
[code]....
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Jun 8, 2011
I've been running Debian for a while, and now have the chance to do some enterprise-level experimentation. I stumbled across a very cheap EMC Clariion CX300 fibre RAID unit on eBay with 10 disks (Ģ90!), so I snapped it up with a fibre HBA. It's not a SAN, technically a DAS in its current configuration. I'd like to know how hard it is to set up one of these as an actual disk device in Debian.I tried installing the HBA (an Agilent Tachyon XL2 PCI-X card, 32 and 64-bit modes) in my current 'live' server (a Celeron 1.2GHz-based machine), but while Debian detected it as a FC controller card, mapping the LUNs within Navisphere on the CX to the host caused nothing (obvious) to show up in the OS. From what I've read about setting up SANs (not DASs, there seems to be precious little info on setting up these), there's firmware involved with the card, and there are no references to getting a Tachyon running under Linux.
I also snagged a good deal on a PowerEdge 1850 server, but as it's the PCI-Express version, the Tachyon won't fit, so I'm considering buying a PCI-E HBA. I found a QLogic QLE2460 for a good price, but I'm hesitant to buy it, in case I still can't get Debian to see the disks. I'd most like to have the device connected to the PowerEdge instead of the Celeron machine. Have I missed a step in the configuration, or is there anything I can do to test if the system is working as it should be? The units we use at work are much simpler: set the RAIDs up, map the host LUNs and the disk shows up in Windows. I'm also sure I've set everything up correctly on the CX, as the same LUN is available to Windows. Just need to get Debian to see something on the end of the HBA!System Specs:Live Server: Celeron 1.2GHz, 512MB RAM, Intel D815EEA2 board, SATA soft-RAID hard drives, PCI Gb Ethernet and USB2.0, Agilent Tachyon XL2 PCI-X FC HBA, Debian 6.0.1PowerEdge 1850: 2x 3.2GHz Xeons, 6GB RAM, SCSI RAID disks, PCI-E riser, planned QLogic QLE2460 PCI-E HBARAID Unit: EMC Clariion CX300, 10x 146GB FC disks, 2Gbps Fibre-channel interfaceThe PowerEdge is the planned replacement for the Celeron machine, which started life as my experimentation box and became my personal live server. Storage is holding it back, so I'd love to add a further five disks to the CX and have nearly 2TB of RAID-protected storage.
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Oct 28, 2009
While loading a rpm package its showing error of failed dependencies so wat to do for dat pls guide me
n in another case its showing cant create transaction lock on /var/lib/rpm/_db.000
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May 29, 2011
I have created a shell script to customise mv command, now i have achieved to accomplish all the functionality of mv by using alias. But i found difficulty in accomplish the funcionality with options [Like mv -i or mv -f etc.]. I thought about logic which check the first argument whether its starting with a minus [-] or not. if its starting with argument it will set a flag and execute accordingly. But whenever this condition is checked it shell script will throw error of destination operand missing. But the same will work with out option.
Note: I have used an minus[-] expression for decreasing a counter on the script above. The below mentioned is the portion of script. Sry for troubling Im not gud @scripting.
for i in $*
do
{
argument=`expr $argument - 1`
if [ $argument = 0 ];
then
exit
[Code]....
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Apr 7, 2011
I am trying to create a Raid 1 ram disk. Below are the commands I used:
[root@abidbodal dev]# mke2fs -m 0 /dev/ram8
[root@abidbodal dev]# mount /dev/ram8 /mnt/rd8
[root@abidbodal dev]# mke2fs -m 0 /dev/ram9
[code]....
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Apr 18, 2011
When I try to connect a projector to my laptop (already running) and hit the fn+f7 (the designated button for switching screen), nothing happens. I see "no source found" on projector screen and my laptop screen works perfectly. Now if I restart the laptop with the projector connected, I see all the intial booting messages on the projector screen (not on my laptop), then the gnome login screen appears on both the projector screen and laptop (when the login screen appears on laptop it looks like it has lower resolution than my usual laptop resolution). But immediately after I log in, my laptop screen goes blank, and projector screen becomes the only active screen.
If I restart without the projector, again all normal operation on laptop screen is restored.
I feel like I am missing some very silly options. Any help is appreciated.
Here is the output of xrandr when the laptop is connected:
Code:
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Jun 29, 2011
migrate an installed Ubuntu system from a software raid to a hardware raid on the same machine? how would you go about doing so?
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Mar 27, 2010
I have implemented level 5 software raid (of 4 partitions on a SINGLE external hard disk). Implementing it on a single hard disk doesn't serve much purpose, I understand, but I did it for demonstration purpose only. The problem is when I read from the raid device into my laptop's hard disk, the time taken to transfer a 900 MB file is about 4 minutes (4 GB RAM) whereas the rime taken to transfer it from a pen drive is 43 seconds. Isn't raid supposed to work faster. However, the write to the raid device is faster than to a pendrive. Shouldn't it be taking data in parallel from the 3 partitions (as even a single disk has multiple heads) ?
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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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Nov 7, 2010
i recently upgraded to LTS 10.04 of ubuntu....but after 1 day, itz not opening....some errors are shown....i tried to rectify bt failed....can any1 help me to recover a file.....i just need dat file because it is my project.
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Jul 25, 2010
I have 160gb laptop. i installed vista in c primary partition which is 25gb and installed ubuntu in d primary partition which is 20gb. A remainig for my data. Now i tried to install CENT OS by formatting ubuntu. I inserted CENT OS DVD and restarted and i selected to delete my /dev/sda2 which is showing 20480mb and it shown me free space. but i tried to add partion /boot of 100mb it got added. but, when i am trying to add / of 3000mb in the remaining 20380mb free space it showing an error message that no free space is available.
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May 10, 2010
In normal desktop GUI is working fine. But when in install VNCserver and tried to connect form my window machine through Ultra vnc it is not working properly. The issue I am facing is: when I am opening a terminal and enter later "m" from keyboard its work as a short for mail, and in case of later "s" the shortcut is "shutdown tab" those are present in panel. Then I remove those from panel and now I can enter the word m and s in terminal. The behavior is seems like a bug.
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Dec 18, 2010
the attachment and tell me how to get out of it...whenever i am opening any WORD DOCUMENT these msg comes to recover and i dont understand what to do?
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May 11, 2011
i hav recently upgraded to 10.10 and followed by wine. I tried to upgrade from wine 1.2 to 1.3 but i could not. Later i encountered a problem. This is it:An unresolvable problem occurred while initializing the package information."E : ntu-wine/ppa/ubuntu is not known on line 2 in source list /etc/apt/sources.list.d/ubuntu-wine-ppa-maverick.list'"
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Jun 14, 2011
I was working with timezones when I came across a very strange error. Date command showed Invalid date/time when I set the date/time to 27 Mar 2011, 02:00:00. On further analysis, I observed that the time was jumping to 03:00:00 after 01:59:59 when the date is 27th Mar, 2011.
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Nov 11, 2009
I am getting the error below. Is this something that will resolve as all of the packages are updated?
Code:
[root@ella ~]# yum -y install --skip-broken iptstate
Loaded plugins: fastestmirror, protectbase, refresh-packagekit
Loading mirror speeds from cached hostfile
* fedora: mirrors.tummy.com
* livna: rpm.livna.org
* rpmfusion-free: mirrors.tummy.com
* rpmfusion-free-updates: mirrors.tummy.com
* rpmfusion-nonfree: mirrors.tummy.com
* rpmfusion-nonfree-updates: mirrors.tummy.com
* updates: mirrors.tummy.com
2 packages excluded due to repository protections
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package iptstate.i586 0:2.2.1-5.fc11 set to be updated
--> Processing Dependency: libnetfilter_conntrack.so.1 for package: iptstate-2.2.1-5.fc11.i586
--> Finished Dependency Resolution
iptstate-2.2.1-5.fc11.i586 from fedora has depsolving problems
--> Missing Dependency: libnetfilter_conntrack.so.1 is needed by package iptstate-2.2.1-5.fc11.i586 (fedora)
Packages skipped because of dependency problems:
iptstate-2.2.1-5.fc11.i586 from fedora
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