Software :: MDADM Removed With 'apt-get Upgrade'
Sep 28, 2009
That upgrade I did removed mdadm package and I have a raid array. Did the mdadm package get replaced? I'm fearful that if I need to reboot or the system looses power, that I won't be able to access the array. When I try to (re)install the package, it wants to remove many that I also need.
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0 upgraded, 1 newly installed, 56 to remove and 0 not upgraded. Need to get 433kB of archives. After this operation, 250MB disk space will be freed. Do you want to continue [Y/n]? n
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Mar 11, 2011
I have a 4 disk raid 5 array on my Ubuntu 10.10 box. They are /dev/sd[c,d,e,f].Smartctl started notifying me that /dev/sde had some bad sectors and the number of errors was increasing each day. To mitigate this I decided to buy a new drive and replace it.I have an external 4-bay disk enclosure. I failed /dev/sde via mdadm:
Code:
mdadm --manage /dev/md0 --fail /dev/sde
mdadm --manage /dev/md0 --remove /dev/sde
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Jul 31, 2010
I had a raid array working great in 9.04 with mdadm, and I just recently upgraded to 10.04 (clean install) and I'm trying to reassemble the array and having a dickens of a time.When I try to recreate the array with:
Code:
sudo mdadm --create /dev/md0 --level=5 --raid-devices=3 /dev/sdb /dev/sdd /dev/sdc
I get this:
[code]....
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May 19, 2010
I have 4 drives in my system. Two are SATA and configured in a RAID 1. This is my main drive for the system. The other two drives are IDE drives used to bulk temp storage. Before the upgrade my RAID drives were:
/dev/sda
/dev/sdb
I'm not sure what the IDE drives were. Now after the upgrade the IDE drives are:
/dev/sda
/dev/sdb
and the RAID SATA drives are:
/dev/sdc
/dev/sdd
Needless to say on reboot the raid blow up and the system would not boot. I was able to get it working for now by removing the IDE drives. My current mdadm.conf file is as follows:
DEVICE partitions
ARRAY /dev/md1 level=raid1 num-devices=3 UUID=20fd5b92:860d9ca3:57d3b65c:14fcf2fb
devices=/dev/sda2,/dev/sdb2
ARRAY /dev/md0 level=raid1 num-devices=3 UUID=16401201:52cf4cc0:27286d7a:ac5234f7
devices=/dev/sda1,/dev/sdb1
MAILADDR root
Now I assume that I could change the devices to the new devices names. However I was hoping for a better way to do this. The IDE drives are only semi permanent. Is there a way to configure mdadm with partition labels like you can in fstab?
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Apr 13, 2010
KDE 4.3 squeeze-SID
I've got a strange problem with my last "aptitude safe-upgrade". It had removed all my kde 4.3 and packages I have installed, I don't know why!
This is what aptitude removed :
$ dpkg -l | grep ^rc |awk '{print $2}' | xargs echo .....
I reinstalled kde-full (kde 4) but now with an aptitude safe-upgrade or dist-upgrade. It wants to remove my debian-multimedia keyrings and my wine-unstable and others each time.
# aptitude -s safe-upgrade
Les NOUVEAUX paquets suivants vont etre installs : <<<<<<<<< #new packages will be installed
libparted0debian1{a} libva1{a} libx264-92{a} libxklavier16{a} mysql-server-core-5.1{a}
Les paquets suivants seront ENLEVES : <<<<<<<< # packages will be remove .....
Here is my pref list :
Package: *
Pin: release o=apt-build
Pin-Priority: 989
Package: *
Pin: release o=Unofficial Multimedia Packages,a=unstable,l=Unofficial Multimedia Packages
Pin-Priority: 988
Package: *
Pin: release o=Debian,a=unstable,l=Debian
Pin-Priority: 987
Package: *
Pin: release o=volatile.debian.org,a=stable,l=debian-volatile
Pin-Priority: 986
Package: *
Pin: release o=Debian,a=stable,l=Debian-Security
Pin-Priority: 985
Package: *
Pin: release o=Unofficial Multimedia Packages,a=stable,l=Unofficial Multimedia Packages
Pin-Priority: 984
Package: *
Pin: release o=Debian,a=stable,l=Debian
Pin-Priority: 983
Package: *
Pin: release o=Debian,a=testing,l=Debian-Security
Pin-Priority: 982
Package: *
Pin: release o=Unofficial Multimedia Packages,a=testing,l=Unofficial Multimedia Packages
Pin-Priority: 981
Package: *
Pin: release o=Debian,a=testing,l=Debian
Pin-Priority: 980
And my sources.list:
# SID [URL]
# LENNY [URL]
# SQUEEZE [URL]
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Sep 21, 2010
A big catastroph in my computer,I'm running slackware current Yesterday after finding a security update for thunderbird 3.1.4 in my mail, as I've suscribed to receive newsletter.So I run the slackpkg update and then a slackpkg upgrade-all. During this process I had a message asking me what to do with duplicated libraries of old versions for :
firefox
thunderbird
seamonkey
R Remove
S Skip
B Blacklist
So I decided to remove old versions. Since that all shortcuts for these applications have disapeared from my desktop. the commands for these programms don't work. And the menus have gone from the kickoff application launcher.
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Jul 1, 2010
I dist-upgraded my Debian unstable and 'cups' removed the official drivers ('cndrvcups-common_2.00-2_i386' and 'cndrvcups ufr2-uk_2.00-2_i386'). Well, now my network Canon i-SENSYS MF4120 multifunctional printer/scanner doesn't work and the drivers can't be installed back
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Nov 22, 2009
Here's a brief description of my system:
120GB Sata HDD - Primary OS drive
3 x 1.0TB Sata HDD - Raid 5 array
This is on a C2D MSI P35 Platinum board. Anyway, did a fresh install of F12 on the 120GB, which I had problems with - Anaconda refused to see the drive. Fedora Live could see it fine, and it was listed as an 'nvidia_raid_member' - no idea why, but I completely erased the disc under the Live CD and proceeded to install F12.
Once F12 was installed, I loaded up mdadm to re-activate my Raid 5 array, using 'sudo mdadm --assemble --uuidthe uuid) - and it started with only 2 of the 3 drives. My /dev/sdb drive did not activate into the array, due to what mdadm said was a mismatched UUID. Ok, so I erased /dev/sdb, intending to rebuild the array. Erased /dev/sdb, and then attempted 'sudo mdadm --add /dev/md0 /dev/sdb' and I get this error: "mdadm: Cannot add disks to a 'member' array, perform this operation on the parent container" - I can find NO information on this error message.
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I don't believe the hard drives are connected in the exact same order they were in before - I disconnected everything in the system and blew it out (it was pretty dusty)
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Jun 24, 2011
I've been having trouble with CUPS.I uninstalled it and I wanted to re-install it. When I removed CUPS some other files were removed too. I don't have an option of installing the software or updating a system, in the Control Center.
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Jan 11, 2010
I am planning on setting up a 4x1TB RAID5 with mdadm under Ubuntu 9.10. I tried installing mdadm using "sudo apt-get install mdadm", all worked fine except for the following error: Code: Generating array device nodes... /var/lib/dpkg/info/mdadm.postinst: 170: /dev/MAKEDEV: not found failed. The end result is the /dev/md0 device has not been created, as can be seen here:
Code: windsok@beer:~$ mdadm --detail /dev/md0 mdadm: cannot open /dev/md0: No such file or directory After googling, I found the following bug which describes the issue: [URL] However it was reported way back in April 2009, and it does not look like it will be fixed any time soon, so I was wondering if anyone knows a workaround for this bug, to get me up and running?
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Jan 9, 2009
I accidently removed bottom panel of suse 11.1.Please be so kind to help me to get it back my bottom panel.
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Apr 2, 2010
I'm setting up a DIY NAS system, running Ubuntu server from a CF and using 2 SATA drives. I only need RAID1. so that should do. Setting up RAID1 with mdadm is straightforward, and all of my tests with failure/recover scenario work fine in VirtualBox. Most of the tutorials on the net are talking about using mdadm in conjunction with LVM2. What is the reasoning behind LVM2 over mdadm?
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Jul 11, 2010
I'm writing a monitoring plugin for a home server RAID, mdadm on Ubuntu 10.4. code...
I'm looking for the possible values of "state" but can't seem to find it anywhere, neither man nor the online documentation I have found seem to have a list.
Does anyone know where to find a list of possible states?
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Aug 6, 2010
I'm trying to get mdadm to assemble all my drives with help of uuid.
When I use
$ sudo mdadm --assemble /dev/md0 /dev/sdb /dev/sdc /dev/sdd
mdadm: /dev/md0 has been started with 3 drives.
So the setup works. But I want to do it the proper way with UUID.
$ sudo blkid
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Oct 14, 2010
I'm the user operating ubuntu 9.10 server. I made configuration with software mirroring(raid1). when I checked cron, I found the mdadm in cron.d dir. 57 0 * * 0 root [ -x /usr/share/mdadm/checkarray ] && [ $(date +\%d) -le 7 ] && /usr/share/mdadm/checkarray --cron --all -- quiet checkarray is supposed to be run on the first sunday of every month. so I just want to know
1. what does checkarray do exactly?
2. does it make a stress to system?
3. Is there any problem if I get rid of the script from cron?
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Mar 30, 2011
I've got a strange problem. I have the following system:
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After doing this install everything works fine as expected. I can reboot, shutdown and bootup as I much as I want to and the system will work. Now, I proceed to do the following (as root obviously - sudo bash)
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When I try to restart the system now, I get to the grub boot loader and then it just breaks with the following message I've identified 'mdadm' as being the culprit here. Any idea why this would happen? Just a subnote. The reason I'm installing mdadm is to create a soft-raid as follows with the remaining space on each drive:
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Jun 5, 2011
I have 4 WD10EARS drives running in a RAID 5 array using MDADM.Yesterday my OS Drive failed. I have replaced this and installed a fresh copy of Ubuntu 11.04 on it.I then installed MDADM, and rebooted the machine, hoping that it would automatically rebuild the array.It hasnt, when i look at the array using Disk Utility, it says that the array is not running. If i try to start the array it says : Error assembling array: mdadm exited with exit code 1: mdadm: failed to RUN_ARRAY /dev/md0: Input/output errormdadm: Notenough devices to start the array.I have tried MDADM --assemble --scan and it gives this output:mdadm: /dev/md0 assembled from 2 drives - not enough to start the array.I know that there are 4 drives present as they are all showing, but it is only using 2 of them.I also ran MDADM -- detail /dev.md0 which gave:
root@warren-P5K-E:~# mdadm --detail /dev/md0
/dev/md0:
Version : 0.90
[code]....
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Aug 10, 2011
I have created a RAID 1 array using this tutorial. Rather than reiterate everything I'll just say that I followed the instructions to the letter, including the creation of /etc/mdadm/mdadm.conf and editing /etc/fstab as instructed in the tutorial.The problem comes when I reboot the system. I get the following message before seeing a login prompt.
Code:
fsck from util-linux-ng 2.17.2
mount: wrong fs type, bad option, bad superblock on /dev/md0,
[code]....
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Feb 8, 2011
So i am having trouble resuming an array. When i try it tells me that it's unable to do so because only one drive is available. Here is the weird bit, if i examine each of the drives one thinks that both drives are available and the other drive shows the first drive as being removed. (see below). This is a raid 5 and one of the drive has failed and been removed. I know that this was a terrible idea but the array has been functioning for a few weeks with just the two drives. And now i can't resume. Here is the output of the examine functions for each drive: notice that sda1 sees both drive 0 and 1 as active, but sdb2 sees drive 0 as removed.
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I need to resume without losing the data, i'm afraid that adding drive 0 to array will reinitialize the array losing all of the data. Someone please help me out in finding the right command to get the array up long enough for me to get the important data off.(and please refrain from telling me how stupid i am for not getting it all off as soon as drive 2 went faulty. I know it was dumb but this is where i am now and can't change the past).
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Jun 14, 2011
I cant seem to get my RAID 5 (consisting of 8 1tb hard drives) assembled for some reason and I have no idea why and cant find any solutions online. Ill go ahead and show what my problem is:
here is all my hard drives:
Code:
server:~$ sudo fdisk -l
Disk /dev/sda: 10.2 GB, 10242892800 bytes
255 heads, 63 sectors/track, 1245 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0004f041
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So as you can see the array for those last four look fine however for the first four it marks the last four drives as faulty for some reason. I am kind of clueless to do from this point on honestly, I have data on this array that I'd really like to save.
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Mar 11, 2010
I have a machine that supports 4 S-ATA drives. I have all identical drives in each slot. I am asking for someone to please tell me how I can create a RAID5 array on Linux and then also have the 4th drive (/dev/sdd) as a hot spare for any of the three drives in the array / volume?I did the following:
/device = type @ parition size
/dev/sda1 = fd @ 100 MB (bootable for /boot)
/dev/sda2 = fd @ 1 GB (Going to be used for Swap)
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Mar 31, 2011
I've 2 servers (xen1 and xen2 - their hostnames) with perversion configuration below: Each server have 4 SATA disks, 1 Tb each.
16 Gb ddr3
debian squeeze x64 installed:
root@xen2:~# uname -a
Linux xen2 2.6.32-5-xen-amd64 #1 SMP Wed Jan 12 05:46:49 UTC 2011 x86_64 GNU/Linux
Storage configuration: Former 256 Mb + 32 Gb of 2 of 4 disks are used as raid1 devices for /boot and swap respectively. The rest of space, 970 Gb on all 4 sata disks are used as raid10. There is LVM2 installed over that raid10. Volume group is named xenlvm (that servers are expected to use as xen 4.0.1 hosts, but the story is not about Xen troubles). / , /var, /home are located on logical volumes of small size (just found out I got mixed up with lv names and partitions, but that's not the problem, I think):
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Mar 10, 2010
I have done lots of searching and I haven't been able to find anyone else with the same problem. Whenever I create a RAID with 'mdadm', regardless of level (I've done linear, 0, and 5) the command I use is:
Code:
mdadm --create --run --verbose /dev/md0 --raid-devices=11 --spare-devices=1 --chunk=256 --level=5 /dev/sd[abcdefghijkl]1
The RAID is build RAID 5 as it should be. However, when I check /proc/partitions it shows under "md3".
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Jan 11, 2011
After installing a new Rhel6.0 64bit on VMWare i got the information:
{
disabling swap...
/dev/dm-1
unmounting filesystems...
/mnt/runtime done
code....
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Oct 21, 2010
I have a previously defined RAID5 (4 disks). This worked in Ubuntu 8.04.. I recently moved to CentOS5.. and I cannot seen to get the drive back online.cat /proc/mdstat shows, no raid levels (personalities).. and no drives listed.mdadm --detail -scan returns nothing.mdadm --QE returned a UUID string.. and the ARRAY output.I can mdadm --examine all the members of the original array.I am not versed in mdadm enough to really understand what I can run and should not run that would erase the data on the drives. Please assist.. I will try to post exact output of commands.. but the system is kind of unreachable and being rebuilt... i just want to ensure my data on the array is not lost
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Mar 30, 2010
I tryed to install ubuntu 10.04 using the beta alternative install cd.
Everything went fine until the partitioning section.
I choose manual partitioning and all my existing partitions were detected correctly included my 2 mdadm raid0 arrays.
I choose md0 as my / partition and choose to format the partition
I choose md1 as my /home partition as choose to keep the data
When I choose to continue and write the changes to disk the install started to create an ext4 partition on md0, the installer then stopped with an error that the kernel could not reread the partition table.
I aborted the installation at this point.
Now I can not access either of my arrays.
I have booted a livecd and installed mdadm. When I checked /etc/mdadm/mdadm.conf my existing arrays were already listed.
Code:
# mdadm.conf
#
# Please refer to mdadm.conf(5) for information about this file.
#
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May 3, 2010
Created my own file server/nas, but get stuck in a problem after couple of months. I have a server with 4x 1,5tb disks, all connected to sata ports and 1 40gb ata133 disk running ubuntu 9.10 x64 amd. I've created a raid5 array using mdadm. It all worked great for couple of months but lately the raid5 array is degraded. disk sdd1 is faulting every few days. I have checked the drive but it is fine. If I re-add the disk and wait for 6 hours my raid5 array is all fine again, but after a few shutdowns, it is degraded.
my mdadm detail:
Quote:
root@ubuntu: sudo mdadm --detail /dev/md0
/dev/md0:
Version : 00.90
Creation Time : Mon Dec 14 13:00:43 2009
Raid Level : raid5
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Jun 19, 2010
I currently have a Raid0 setup with two disks and I have no problems whatsover. I currently bought 3 brand new 1B drives and I set up Raid5. I created the array and everything works fine. I formatted the array and mounted it. When I tried to copy 750gb of data over my new array, it copies fine at some point and it fails. After reboot, I am seeing the array inactive. I tried everything and could not get the raid back active status. I have removed the array and recreated again, formatted again. When I started copying my files over, exactly same thing happened.
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Jul 9, 2010
I'm setting up Ubuntu 10.04 Server x64 on a Gateway DX4710. I installed on a 500GB SATA, using encrypted LVM, added webmin, and used ufw to configure iptables. All seemed fine.I then set up RAID1 on two 1TB SATAs. Using webmin, I created Linux RAID partitions on sdb and sdc. I then ran ...
sudo mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sdb1 /dev/sdc1
sudo mkfs.ext3 /dev/md0
sudo mkdir /data
sudo chmod -R 777 /data
sudo mount /dev/md0 /data
All still seemed fine.I could see /data in the webmin filesystem list, and had ca. 1.4TB total local disk space.At that point, I decided that I really wanted an encrypted filesystem on /dev/md0. I also needed to tweak the fan setup. And so I shut down, without adding /dev/md0 to fstab. And it was probably still synching.Now /dev/md0 is semi missing. That is ...
sudo mdadm -D /dev/md0 => doesn't exist
sudo mdadm -E /dev/sdb1 => part of RAID1 with sdc1
sudo mdadm -E /dev/sdc1 => part of RAID1 with sdb1
What do I do now? Can I recover /dev/md0? Is it just that I didn't add it to fstab? Can I just do that now? Or do I need to delete sdb1 and sdc1, and start over?
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Aug 9, 2010
My motherboard has a BIOS feature to support RAID1 for two disks. I know it's FakeRAID but that's what Windows can work with. I've read that Linux's built in softraid mdadm is better so I'd prefer to use that for Linux's own filesystems. Can I enable FakeRAID in the BIOS without it affecting Linux in any way? Is it possible for Ubuntu to read and/or write to the NTFS partition that's raided with the fakeraid?
Also, if running mdadm in RAID 1 how much risk is there of losing data if the computer crashes? Is e2fsck able to repair a filesystem on a RAID 1 setup?
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