Ubuntu Installation :: After The Installation The System Cannot Autostart Raid1?
Oct 10, 2010
I just made a complete reinstall of my fileserver. After the installation the system cannot autostart my Raid1. For some reason it seams that only one of the identical disks are found by mdadm"disk utility" states "not running, partially assembled"If i immediately stop the raid in the disk utility I can restart it and mount it.some diagnosticsmdadm.confQuote:
# by default, scan all partitions (/proc/partitions) for MD superblocks.
# alternatively, specify devices to scan, using wildcards if desired.
DEVICE partitions
[code]....
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Mar 12, 2011
I've read many of the postings on ICH10R and grub but none seem to give me the info I need. Here's the situation: I've got an existing server on which I was running my RAID1 pair boot/root drive on an LSI based RAID chip; however there are system design issues I won't bore you with that mean I need to shift this RAID pair to the fakeraid (which happens to most reliably come up sda, etc). So far I've been able to configure the fakeraid pair as 'Adaptec' and build the RAID1 mirror with new drives; it shows up just fine in the BIOS where I want it.
Using a pre-prepared 'rescue' disk with lots of space, I dd'd the partitions from the old RAID device; then I rewired things, rebooted, fired up dmraid -ay and got the /dev/mapper/ddf1_SYS device. Using cfdisk, I set up three extended partitions to match the ones on the old RAID; mounted them; loopback mounted the images of the old partitions; then used rsync -aHAX to dup the system and home to the new RAID1 partitions. I then edited the /etc/fstab to change the UUID's; likewise the grub/menu.list (This is an older system that does not have the horror that is grub2 installed) I've taken a look at the existing initrd and believe it is all set up to deal with dmraid at boot. So that leaves only the grub install. Paranoid that I am, I tried to deal with this:
dmraid -ay
mount /dev/mapper/ddf1_SYS5 /newsys
cd /newsys
[code]....
and I get messages about 'does not have any corresponding BIOS drive'. I tried editing grub/device.conf, tried --recheck and any thing else I could think of, to no avail. I have not tried dd'ing an mbr to sector 0 yet as I am not really sure whether that will kill info set up by the fakeraid in the BIOS. I might also add that the two constituent drives show up as /dev/sda and /dev/sdb and trying to use either of those directly results in the same error messages from grub. Obviously this sort of thing is in the category of 'kids don't try this at home', but I have more than once manually put a unix disk together one file at a time, so much of the magic is not new to me.
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Jun 1, 2010
I just tried to install with Ubuntu 10.04 AMD64 Alternate on RAID1 and Encryption but after reboot the screen just stays black.
my system is a AMD Athlon 64 X2 Dual Core 4200+ on a Abit AN-M2HD Motherboard, and 2 HDs each 250.1 GB
i split the HD into
* 50GB for /
* 200GB for /home
* 1GB for swap
all get a RAID1
/home is encrypted with passphrase (Twofish 256, cbc-essiv:sha256)
swap is encrypted with random (Blowfish 128, cbc-essiv:sha256)
where can i check RAID and hardware compatibility?
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May 3, 2011
I upgraded from 10.10, and there were no apparent problems during install. However, Unity doesn't start when I use the Ubuntu session from GDM. I have guake terminal installed, which starts correctly, so if I open that and run unity as a background process, everything works perfectly. I would like a solution other than adding it to my startup apps, because I still use GNOME every now and then.
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Sep 27, 2010
I recently set up an old desktop computer on my home network for use as a file server. I installed Ubuntu 10.04 Server on it and I'm slowly learning how to make it do what I want (I'm used to the GUI, so this is a bit of a jump for me).My plans are to put two 1.5TB hard drives in the computer (there's already a 160GB with the OS installed) and put them in a RAID1 configuration. This, as I understand it, will write all data to both drives, creating two identical drives. I'll only have 1.5TB total space for backup, but if one of the hard drives die, I can replace it without losing any data.
Hopefully I understand all that correctly. Now, my questions are how to actually set a RAID configuration up. I don't have a controller or anything, assuming I could do it off the two SATA ports in the motherboard (the 160GB is IDE) in software RAID.Once I have the two hard drives set up in RAID1, how do I allow the house to access the file storage?We're all on Windows 7 computers.If one of the hard drives fail, how will I know? Can I set it up so I receive some sort of notification? Also, how does the replacement process work; can I just pop the broken drive out and put a similar one in? Do I need to readjust any settings after replacing one?
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Aug 1, 2011
I just installed Ubuntu server edition to my computer (brand new, no OS) and finished installation. In the terminal I used apt-get ubuntu-desktop to install a desktop interface.In my rig, I have two 500GB HDDs. I set them up through my computer BIOS as RAID1 drives, yet as I understand I still need to configure the Ubuntu software raid for it to work correctly. Unfortunately, I already partitioned my drives! I used the easy way (guided with LVM or whatever) and let it do it for me. Now, RAID1 is very important to me! Is there anyway to repartition the disks to use RAID1, or do I need to wipe my computer and reinstall Ubuntu?
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Sep 28, 2009
I am using CentOS 5.2. I am installing from disc on a machine with Intel Embedded Server Raid Technology. It has two 500 GB SATA drives. During the initial boot process, it sees that these two devices exist. However, after getting into the screen to partition and configure RAID, it just shows this:
Drive /dev/mapper/ddf1_MegaSR R! #0 (475879 MB) (Model: Linux device-mapper)
I want to do a RAID1 so that the disks are mirrored. However, I would expect to see both drives listed. I can select RAID to create RAID partitions, but I think I need to be able to see both drives in order to do this correctly.
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Jul 29, 2010
I have built a small test server. I am planing on using this machine a an email and web server to test out its hosting capacities. in the future I will build a larger and more well equipped version.
AMD Athlon x2 2.0ghz
2 160gb SATA drives (hardware raid 1, done through the Motherboard)
2 gb ram (dual channel)
Like I said small test server. I am trying to install 10.04 server edition. When I get to the point of partitioning it asks me to activate the raid so I do. I get through the guided partitioning and get ready to write the file system to the drives and the screen goes red and says that it has failed. On a side note, this works if i install it on the same drives without any raid configuration.
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Feb 24, 2011
I'm sorry if this is the wrong section and if there is another thread on the matter. I searched but couldn't find threads with my specific problem. I've just installed Ubuntu 10.10 Server 64 bit which I intend to use as a internal file server.
The hdd setup is:
500gb system disk
1tb storage
2tb storage (2*2tb using built-in motherboard hardware RAID1) When the installation was complete and the computer rebooted I got an error message saying "error: no such disk". After re-installation I got the same message and I then tried disconnecting all the storage devices and it booted perfectly. I then tried connecting up the 1tb drive and again it booted as it should. But when I re-connected the RAID:ed disks the error message re-appeared.
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May 15, 2011
I would like to move a samba fileserver from ClearOS5 to Ubuntu. It has raid1 (software) and I would like to save one partition from it, md3. The other partitions could be used for Ubuntu. How would I go about this so that I don't erase data from md3 and is it even possible?
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Jun 18, 2010
Recently, I installed a fresh 64bit Lucid Lynx on my Lenovo B450 laptop (previously on Mint8 64bit, based on Karmic). It's been really nice and speedy except for one thing - USB transfers to thumb drives and external hard drives were really slow (just like in the older Ubuntu releases). I had found some forum discussions on a fix to this by way of a kernel upgrade so I decided to go for it.
Went ahead and downloaded the kernel DEBs from [URL] and installed them. Voila! USB speed issue was fixed! Everything else seemed to work fine, except for some minor troubles with burning CDs and DVDs (I think I need to upgrade the drive's firmware - pretty bad situation as the update only runs on Windows).
However, the one 'bug' or 'annoyance' I noticed straight away was that my wireless wouldn't autostart after booting into the OS with the new 2.6.34-020634-generic (x86_64) kernel. I'd have to right-click on the NetworkManager icon on the notification tray and left-click '[ ] Enable Wireless' to flag the checkbox and my wireless would come right up and work ok (WPA2 at home, WEP at the office). Not a major problem, but this has been pretty irritating to say the least.
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Dec 14, 2010
I fail to install OpenSuse 11.3 with Raid-1. What I do: Partitioning -> Expert. sda1 type RAID do not format / mount, sda2 /(root) type RAID do not format / mount, sda3 /home type RAID do not format/mount. Clone disk to sdb. Raid -> add md126p1 type swap mount to swap, add->md126p2 type etx4 mount to /(root), md126p3 type ext4 mount to /home. Bootloader: GRUB, boot from MBR enabled, boot from / disabled. After installation the system does not boot and grub reports error that the specified filesystem can not be found.
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Nov 19, 2010
Like it says in the title, I am thinking it should be this hard to install the RAID1 array in my brand new PC. Here is what is happening. I have two brand new 1TB drives that I am attempting a new, fresh install of 10.10 on (in fact, the entire box is new). I am attempting to use the alternate desktop install so that I can have access to the manual partitioning (which is required to setup RAID 1, correct?).
I tried to use the guide here: [URL]... I followed the steps, but when I got the the very end (after selecting and creating the MDs) I get an error message stating that there is no root file system defined. I went back and checked all the steps and I am sure I followed everything in the guide.
Here are some quirks (not sure if they are bugs or not) In step 5 of the disc partitioning, it says to select the bootable flag and set it to yes (I am assuming). I press enter over that options, the screen flashes really quickly to a progress bar, but then comes back to the options screen and it still says bootable flag is off. No matter how many times I do it is says "off".
Also, and here is the bigger problem I think. - So the guide says to select the free space in each drive and then select Automatically Partition the free space, which I do, and it comes back and looks formatted accordingly - has 975.6 GB ext4 / and 24.6 GB swap swap. No Problem there.
BUT - whenever I do the same thing to the second drive, the partitions on the first seem to disappear. Meaning, it doesn't say free space, and has two partitions listed, but the / and the swap (last items in each row) have moved to the second drive partitions. I am not sure if this is how it is supposed to be since the pictures in the linked guide to not show what it looks like after that. THis is driving me crazy and I have to have it set up in RAID 1 and unsure as to what it is I am missing.
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May 21, 2011
I have been running dual boots for a long time and never had a problem installing Ubuntu.I now tried to install Ubuntu Studio on my performance machine, a DELL Studio XPS, which has (had?) a RAID1 configaration.I got stuck in the partitioning and tried to abandon, which left me with maybe nothing... When I tried to reboot, my machine started Windows but then "autochk program not found". And I am lost for what to do...
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Jan 6, 2011
I have the following configuration:
2xHDD 300GB RAID1 - OS part
2xHDD 1TB RAID1 - data part.
Both arrays were created inside the bios-like setup.
During the installation of fedora I "checkboxed" only the 300GB OS raid and used it for the installation. Everything is ok with it. After installation finished and I rebooted, I tried to initialize my second RAID1, that's 1TB - I was able, it was OK, I created 1 max-size filesystem there and put some data in it. After reboot this filesystem didn't want to mount for some reason - so I commented it in fstab and to my surprise, when I reached linux - the partition for it doesn't exist!!! Here is some data:
Code:
[root@localhost ~]# cat /proc/mdstat
Personalities : [raid1]
md125 : active (auto-read-only) raid1 sdc[1] sdd[0]
976759808 blocks super external:/md127/0 [2/2] [UU]
[Code]....
My guess would be that I am not fully and properly initializing the second array, (it's marked as auto read only in cat /proc/mdstat) but I'm not sure how to proceed.
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May 20, 2010
Compared to my laptop notebook with a HD of 5400rpm, the write performance of raid1 on an ubuntu lucid server is unacceptable. In the begining, I installed ubuntu 9.04 server(alternate) using raid1 with two WD 1TB HDs of 7200rpm(Green Power) and then performed dist upgrade to 9.10 and then to 10.04.
I guess the write performance initially was reasonable since the installation and data migration(copy from another computer over LAN) didn't take too much time. However, after upgrading the server to 9.10 or so, I found large file upload through samba or ftp tends to block and time out. It is of no use whether to change the daemon or the client program so that I tried to test the read/write performance on the server to figure out the situation.
To my surprise, using strace I found even a simple program like cp would easily get blocked eventually in a write() system call for decades of seconds. Hence, I perform another disk writing test using dd for data size ranging from 50MB to 1GB. Performance test commands are listed as follows:
Quote: dd if=/dev/zero of=test.img count=[5|10|15|20|100] bs=10M
if the data to write is equal or fewer than 150MB, the command returns immediately at very hight speed but the raid disks starts to sync and busy so that the terminal prompt seems to freeze. I think this behavior is normal under the raid1 configuration, isn't it?
But when the data size is equal to 200MB, the test command blocks for seconds and the write speed is measured at about 16.6MB/s. Of course, the raid disk still starts to sync and busy afterwards. Next, I test writing with data of size 1GB. The command blocks so long for about 770 seconds(<2MB/s) while the same test runs for only 17.49 seconds(60MB/s) on my laptop.
I also burn a Lucid LiveCD to boot the server and mount the raid device to run the test again but the results remain similar. Does that means even I re-install the system on the raid, the problem never disappears?
PS: the disks run under the mode of UDMA6 without change.
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May 3, 2011
Followed steps 2-5 and purged/reinstalled grub now it boots as it should, NO idea where it was messed up.[URL].. I had 9.10 running in raid1 and upgraded my hardware (cpu, mb, memory etc) and wanted to do a fresh install of 10.04 to get updated. After following the various guides online such as [URL]...It begins to load grub and drops to a "grub> " shell. Which I have to do the following to get it to boot.
Code:
set root=(md1)
linux /vmlinuz root=/dev/md1 ro
initrd /initrd.img
boot
Then it boots up normally and I can use it like any other desktop. I've been over my grub.cfg and /etc/defaut/grub files and cannot find the issue. At this point I'm wondering if the fact it's a raid1 setup is keeping grub from finding it's files.
[Code]...
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Jul 26, 2014
I have a VIA Epia M 5000 system with 2 western digital 1TB NAS SATA drives connected through SATA<->IDE adapter. Everything installs and writes as expected except... grub. It never boots, after a message 'Grub loading' I always get 'error: no such disk'. I've tried numerous times and has been attemping to fix the issue for the past 2 days.
/dev/sda
0.999TB 0xfd linux raid autodetect partition
1GB 0xfd linux raid autodetect, logical partition
/dev/sdb exactly the same
0.999TB 0xfd linux raid autodetect partition
1GB 0xfd linux raid autodetect
/dev/md0
RAID1 of /dev/sda1 and /dev/sdb1
marked as ext4, boot point /
/dev/md1
RAID1 of /dev/sda5 and /dev/sdb5
marked as swap
update-grub2 in rescue mode generates grub.cfg with SET root=/mduuid/UUID_OF_SDA1
then after that there's search --no-floppy etc --set root=/mduuid/UUID_OF_MD0
I'm writing this from memory but simply the two uuids are different. Is this correct? I get those UUIDs to compare from blkid. All partitions are marked as bootable. grub-install /dev/sda and grub-install /dev/sdb produces no errors. grub-install /dev/md0 does not work, complains about superblocks or something similar.
Grub.cfg file contains insmod raid mdraid1x and similar lines, so that should be ok. Grub drops to rescue mode with message error: no such disk. Not device, but disk. Google finds many results for 'no such device' error, but I am not getting that error. 'ls' produces
(hd0) (hd0,msdos1) (hd1) (hd1,msdos1) ls ANY_VALID_PATH produces empty newline being printed, nothing more.
setting prefixes manually does not work, with error message 'error: file not found'. ls (hd0,msdos1)/boot/grub also produces empty line being printed. Rescue CD and auto-assemble of md0 and md1 works, the files are there, everything okay, except grub.
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Jul 31, 2011
I have an existing Fedora 15 system installed from scratch.I've ordered a harddrive identical to my SDA and want to add it to my existing system as a RAID1 setup.I've googled around and cannot find recent clear instructions how to accomplish this. I don't want to reinstall everything from scratch. It should be possible to create the RAID1 using the existing data disk and then mirror everything up?
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Dec 30, 2010
I just got openSUSE 11.2 set up on my home server. The machine has two 2TB HDDs, the first (/dev/sda1) is partitioned thusly:
10GB /
1GB swap
1.82TB /home (/dev/md1 in RAID1 array)
[code]....
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Mar 7, 2011
I am trying to migrate my existing system with one IDE disk , tools installation already done... without loosing informations and having to install once again every things, to RAID1 (soft) with a second IDE disk I tried to do this using somme informations given on forums but i always have a kernel Panic at the end of boot What I did:
The system is going down for system halt NOW!
login as: root
root's password:
/usr/bin/xauth: creating new authority file /root/.Xauthority
[code]....
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May 23, 2011
I have a nas / server running Slackware64-13.37 with two raid arrays, one with 3x500GB disks and the other with 2x2TB disks. I also have 1x80GB hdd which contains the os. I found a spare 250GB hdd from my closet and want to set up raid1 array from os hdd and that spare drive.I know that I can't make use of the extra 170GB of space but I don't care as long as I have working installation on the other disk if that 80GB hdd breaks. How can I set up that kind of raid1 without losing any data?
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Feb 14, 2011
I've got a couple of commercial NAS boxes and I'm wondering if they (ReadyNas duo, DLink DNS-323) or any other NAS is suitable for having their RAIDed disks moved to a software-based NAS. To be specific, I'm a big fan of the (largely) Debian-based Ubuntu. Can the aforementioned NAS drives be migrated to Ubuntu (e.g. using the mdadm Linux command)?
Secondly, is there any commercial NAS that can be migrated over? Incidentally, here is a link to somebody who succeeded in a migration:URL...My specific scenario I'd like to prepare for, is the eventual (sudden) death of one of the NAS motherboards.
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Feb 7, 2010
My software RAID setup is as follows.
/dev/md0 (made from sda1 and sdb1) RAID1 /boot partition
/dev/md1 (made from sda2, sdb2, and sdc2) RAID5 / partition
Earlier on I had some trouble with my sda drive, it dropped itself from both arrays, screwing up the mirroring of my two raid partitions participating in the /boot partition. I eventually got everything sorted out and back in sync. (I also have grub installed to MBR on both sda and sdb). Things are working fine regarding that, but since then I've had this issue:
During boot up, I'll get an error message that it could not mount my /boot partition (when fstab is set to either /dev/md0 or the UUID). It claims c9ab814c-47ea-492d-a3be-1eaa88d53477 does not exist!
My fstab:
Code:
[mark@mark-box ~]$ cat /etc/fstab
#
# /etc/fstab
# Created by anaconda on Wed Jan 20 16:34:41 2010
[code]....
As far as I know, it isn't neccessary for /boot to be mounted always, correct? Although, as I understand, I need to have it mounted whenever making kernel changes correct?
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May 23, 2010
I just completed the ubuntu 10.04 installation using the windows' installer.After the installation, the system reboot. I chose "ubuntu" from the OS selection screen.A message appeared that the system would verify the installation parameters.
Suddently, a message was shown:
"no main file system chosen. Please solve this error from the partition menu."
And it wouldn't continue!
how can I find the partition menu and set the file system for the ubuntu?? An idea would be to enter the installation cd for windows (as if I would wanted to format the pc)...wouldn't then the partition menu appear?
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Sep 30, 2010
I am facing a disgusting problem. While I am trying to update my system using update manager It downloaded the files and then while it starts installation it shows the following message
Code:
(Reading database ... 60%dpkg: unrecoverable fatal error, aborting:
files list file for package 'linux-libc-dev' is missing final newline
[code]....
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May 24, 2010
Every tutorial I've seen on installing a dual boot environment assumes you already have an installed OS (usually Windows). My wife's XP system is pretty hosed, and she's been interested in Ubuntu. Because she's ripe for an XP re-install anyway, I'm planning on backing up her data, completely wiping her hard drive, and installing a dual-boot Windows-XP/Ubuntu environment. Any good step-by-steps for this, with good hints on how to partition, etc.?
If not, my plan B is to reformat and install a basic XP system, and then follow one of the tutorials for going dual-boot over an existing install. Does that make sense? I should mention, I've used Linux for years as a user on my ISP, but have only been using Linux on a home system for a couple months; so I'm fairly new to the install and administer side.
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Dec 31, 2010
I'm new to Linux and wanted to get experience with Ubuntu Server for my new build NAS, because just a NAS OS wouldn't be enough for me. I wanted a server so I can also setup a PDC and webserver.So currently I'm installing ubuntu server 10.04 onto my newly assembled server via usb stick(didn't build in dvd rom drive) I checked the BIOS before loading the OS onto the computer and everything is detected.
there's 1 thing that keeps bugging me. After installation i get a message that the install is complete and usb sticks and all devices should be removed to prevent it from booting the install again.However when i remove the usb stick and I reboot the server I get the following message on the screen:
missing operating system
or
can't find operating system
When I do let the usb stick in, it boots into Ubuntu Server and i can see all my configurations that I made eventhough during install I chose to install it on the HD and paid attention to it I wouldn't touch the usb stick.From here on i could configure the rest, like samba, and give my server an static ip address via the command line.Back to my problem: what can i do to make my server boot from HD without that I have the usb stick in?
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Sep 15, 2009
What I'm trying to do at this point is setup VNC so I can remote into the system via my windows xp systems. I have VNC installed on those computer and I was able to get GNOME's remote desktop operating when I log in on level 5 and actually logged into my user account. However, when I'm not logged in on level 5 it will reject connections entirely. Ultimately I want to remote into the system using tightVNC and view the level 3 (command line only) thing, and allow me to telinit - 5 to switch to gui if I need it from VNC on the windows system. This way I don't need a monitor, keyboard and mouse plugged into the server. Right now that's what I'm having to do.
The problem is that it doesn't run in level 3 at all and level 5 (gui mode) doesn't work if i'm not logged into an account. So how can I get this to work at as a constant running server no matter what level and login point i'm at? Ultimately for this Linux admin class I have to setup a working server and I figured I'd get a base setup with VNC support that I could log into from school to work off of instead of having to use the local connection. Once I get VNC working on my network i'm pretty sure I can get it working beyond my local network.
Here's some commandline stuff that may diagnose my issues:
Code:
As you can see I'm having issues with the libstdc++ lib being detected. I have it installed, but apparently not everything is setup properly. I also have an RPM file for VNC and I've tried to install it with the gnome shell but it gives me an error: "Can't install /home/[user]/Download/vnc-4_1_3-x86_linux.rpm as no transaction" I'm not sure what that means. When I use the command line I get this:
Code:
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Feb 6, 2010
I installing Fedora 12. I did ALL the same as in the installation guide, GRUB installed into MBR. And after installation and rebooting - nothing happens, after BIOS messages there is nothing - computer hangs. GRUB seems to be not installedI have 2 hard disks. At first I tried to install on the 2-nd drive(it is slave). Afterward I detach one disk and try with only one hard disk(it is master). Nothing changes - computer hangs.
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