Server :: Ubuntu 10.04 Server With Raid6 And Possibility Of Motherboard Failure?
Oct 6, 2010
I have set up a server box running Ubuntu 10.04 Server 64-bit with Squeezeboxserver, ftp, apache and all the things that I need.I am running it on a Asus P5Q pro with 9 harddrives attached.I have set up 6 1tb disks that run a raid6 array but I am wondering what would happen if the motherboard would fail me.Is it possible to just replace the motherboard with a newer one and would then the raid6 array still be intact?
I used to run a raid10 with the 6 disks on a Windows 7 machine with a software raid card but the card broke and I replaced it with a new one but the array could would not work so I had to forget all my data and this is what brought me to using a Ubuntu server as OS and running the raid array on the motherboard sata instead.Also, is it possible to make an exact copy of the boot drive/partition and easily replace that is the boot hard drive would go faulty? I have heard about the dd command and I feel it would be nice to know that I'm not totally screwed if the boot drive fails.
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Jun 9, 2010
For backup purposes, I built a RAID6 array on USB. When during the night the backup filesystem is being mounted, every so many days, a random disk fails:
Code: sd 9:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 9:0:0:0: [sdb] Sense Key : Illegal Request [current]
sd 9:0:0:0: [sdb] Add. Sense: Invalid field in cdb[code].....
In other words, my RAID set fails every so many mounts, but I know how to fix it.What I want to find out is:
- Why is a random drive failed every now and then?
- How can I prevent that drive from being failed?
BTW: I have a second RAID set that has been functioning for years without error, so the setup I use must be correct. The only difference between both RAID arrays is the different vendor of the disks.
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May 16, 2010
I'm running debian and used mdadm to setup up a raid 6 array with 4x1TB drives with roughly 1.86TB's available with lvm. Then I added 4x1TB drives to the array. So now I have an 8 drive raid 6 array with 5.+TB's available, the array sees all available space. The question is how do I extend the volume group so that it uses the whole raid and not just half of it. As of right now the volume group is only 1.86TB's.
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Jul 26, 2011
I am currently having problems with my RAID partition. First two disks were having trouble (sde, sdf). Through smartctl I noticed there were some bad blocks, so first I set them to fail, and readded them so that the RAID array will overwrite these. Since that didn't work, I went ahead and replaced the disks. The recovery process was slow and I left things running overnight. This morning I find out that another disk (sdb) has failed. Strangely enough the array has not become inactive.
md3 : active raid6 sdf1[15](S) sde1[16](S) sdak1[10] sdj1[8] sdk1[9] sdb1[17](F) sdan1[13] sdd1[2] sdc1[1] sdg1[5] sdi1[7] sdal1[11] sdam1[12] sdao1[14] sdh1[6]
25395655168 blocks level 6, 64k chunk, algorithm 2 [15/12] [_UU__UUUUUUUUUU]
Does anyone have any recommendations as the steps to take ahead with regards to recovery/fixing the problem? The disk is basically full so I haven't written anything to disk in the interim of this problem.
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Oct 14, 2010
I'm having issue with raid6. I already created a thread in the "Linux -General" forum, but it seems, there is no right audience
[URL]
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Jul 28, 2010
I am not able to connect samba server from other linux pc giving error: NT Authentication Failure
But am able to access through anonymous login from linux Same is working fine will all smb users through windows. I am using rhel 5.
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Dec 17, 2010
I have run into a problem with eSATA that so far I have been unable to find a solution to it on any of the Ubuntu or Intel forums. My set up is as below:
OS: Ubuntu 10.04.01 LTS Server (base install)
Motherboard: DP55KG
BIOS: ver. KGIBX10J.86A..5893.2010.1116.0001
Marvell Controller: 88SE6145, BIOS 1.2.0.31
[Code]......
My understanding is that Ubuntu is suppose to detect the eSATA drive without any extra drivers, my experience is it does not - I am missing something or is anyone else having/had this problem and been able to get eSATA to work?
page [URL] but I don't believe this applies to Ubuntu.
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Nov 24, 2010
I want to give my users option of logging to the system. They should have posibillity for choosing option betweend logging to the system with their default password or one-time password OTPW. I installed OTPW in my Debian. Here is my /etc/pam.d/sshd file:
[Code]....
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Jan 24, 2011
I'm building my first server to use as a Counter Strike: Source game server that I'm hoping will host 24-48 players. I plan on using Ubuntu Server 10.04 64bit. I also plan on using it as my own personal file server. I'm looking at building it with the Intel Xeon E3110 3.0GHz, 1333MHz, Wolfdale, dual-core processor (LGA 775) as it's cheap and from what I've read, should fit my needs.
Initially I want to build the server with a single SSD drive just to get the system up and running and then later I wanna add another SSD to mirror the original with RAID 1. Then I want to add 4 large capacity SATA drives in a RAID 10 for storage (after I've gotten everything else set up).
Can anyone recommend a motherboard that will fit this setup? I'd really like a motherboard that has built in VGA graphics so I don't have to buy a graphics card just for the install (as I plan on using SSH after I get it up and running). I don't plan on using ECC memory as I need the memory to be fast (for the game server). Because this is my first build, I'm very new to installing/setting up RAID. Do any motherboards exist that have a built-in hardware RAID that will work with Ubuntu and let me do raid 1 and raid 10? Or will I have to get a SATA RAID card? Will hardware based RAID allow me to build a raid 1 array with a SSD drive that's already in use (my system drive) without having to reformat/re-partition?
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Sep 11, 2010
I have an IBM xSeries server with a 120gb IDE hd. I would like to use it for mail and web server at work. Obviously, I need a bigger HD. The only thing is I can't find a big (1TB) IDE HD all I can find are SATAs and this server's motherboard does not support SATA drives.
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Apr 27, 2010
I install centos 5.4 on my intel S5000vsa motherboard, and with embeded RAID1. I successfully config RAID1 in BIOS, and then I set to install centos use linux dd mode. And also successfully loaded raid drivers. In centos partition step, one disk appears. However, when centos installed and entered the system, strange result in fdisk -l.
fdisk -l
/dev/sda
...
/dev/sdb
...
Is it normal?
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Apr 8, 2010
I recently set up a Samba Server on a new Gigabyte (Desktop) Motherboard with support for SATA 3.0. I used a new 1T SATA 3.0 (6Gb) Hard Drive. The system is performing poorly, seems to have problems both opening and closing files (*.dbf).
Also will hold a file as open periodically (may be a Samba Issue).
Does the O/S have to support this standard, or is it a function of the Hardware...?
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Jun 17, 2011
I have an Ubuntu box running server 11.04 that is displaying a weird behavior when logging into the CLI. The message below will scroll for about 15-20 seconds when you first log in, but then it goes to the normal shell and everything seems to work fine.
Code:
Welcome to Ubuntu 11.04 (GNU/Linux 2.6.38-8-server x86_64)
* Documentation: http://www.ubuntu.com/server/doc
[code]....
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Jan 13, 2011
Ive been at this for two days now, and cant make any progress.
First, the details:
Target OS:
Fedora 14, i386
Target Machine:
IBM (e)server, xSeries 306
OS: Fedora v.4
Boot Order:
1. CD...
2. Removable Media
3. SATA...
USB Drive:
adata 8GB
Process:
I used the prescribed live usb creator for windows to fill the usb drive with Fedora 14 i386. Ive attempted to boot from the USB at least 4 times, once from each USB port on the box. No luck. There isnt an option in the BIOS to select the specific boot device. I bring that up because my desktop does have that option, and using the BIOS BOOT MENU, I was able to boot from the USB and bring up the Fedora 14 Installation Menu, no problem.
So, it works on the pc thats on my desk (eMachine w/XP), but the IBM doesnt even recognize it.
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Mar 14, 2010
I got a root user command prompt - what do I do next? Edit /etc/X11/xorg.conf? How?Do I need to boot up a live CD?
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May 8, 2010
I'm trying to get openssh-server working so I can stop using the family TV and just SSH from my laptop. I've only just installed 10.4 server edition, and I've made a change to /etc/apt/sources.lst by removing the # in front ofdeb cdrom:[Ubuntu-Server 10.04 LTS Anyway I run:sudo apt-get install openssh-server
Code:
Reading package lists... Done
Building dependancy tree
[code]....
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Sep 1, 2010
I know why this happened, but I need to know what problems it's going to cause and how I can re-install / fix the problem. I have my /tmp folder mounted as -noexec ... so when I did a recent update to my 10.04.1 LTS server installation, I got the following errors:
Processing triggers for initramfs-tools ...
update-initramfs: Generating /boot/initrd.img-2.6.32-24-server
/usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_H30dak/scripts/init-premount/lvm2: Permission denied
/usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_H30dak/scripts/init-top/all_generic_ide: Permission denied
/usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_H30dak/scripts/init-top/blacklist: Permission denied
/usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_H30dak/scripts/init-top/udev: Permission denied
/usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_H30dak/scripts/panic/console_setup: Permission denied
/usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_H30dak/scripts/init-bottom/udev: Permission denied
/usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_H30dak/scripts/local-premount/fixrtc: Permission denied
/usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_H30dak/scripts/local-premount/ntfs_3g: Permission denied
/usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_H30dak/scripts/local-premount/resume: Permission denied
/usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_H30dak/scripts/nfs-top/udev: Permission denied
/usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_H30dak/scripts/local-bottom/ntfs_3g: Permission denied
Press return to continue.
What should I do now? (besides, obviously, removing the -noexec flag from /tmp so this doesn't happen again!)
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Jul 20, 2011
I'm having a problem at the moment (sometimes), tail -f cache.log
[Code].....
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Sep 10, 2010
I'm attempting to get 10.04 to connect to an SBS 2003 pptp vpn server, but for the life of me have been unable to find or implement a working solution. System previously had 8.x and 9.x and had no difficulty connecting to same server, but on a fresh install of 10.04 cannot connect.
tail -f /var/log/syslog shows the following:
Code:
Sep 10 15:19:32 ubuntu NetworkManager: <info> Starting VPN service 'org.freedesktop.NetworkManager.pptp'...
Sep 10 15:19:32 ubuntu NetworkManager: <info> VPN service 'org.freedesktop.NetworkManager.pptp' started
[Code]....
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May 7, 2011
Main purpose of this LAMP server is testing development. I would like to get this server setup up almost exactly to a T how my real web hosting server is setup. I am running 11.04 and have installed LAMP. I also installed vsftpd. I went ahead and made a symlink from /home/user/public_html to /var/www/. I login from a Windows 7 computer via CuteFTP to my Ubuntu server. I can enter the public_html directory and can create folders but the default permissions for any folder created is 700. I have tried running chmod -R 755 /home/user/public_html but this does not work. Every file or folder created now currently will take a 700 permission.
How do I make it so anything that is uploaded into this folder will be at either 755 or 775? Also what is the best practice for utilizing the /var/www directory? Should I be using a symlink to link it to my user's home folder? I have read through so many posts with regards to adding users to a group and giving this group permission and this or that I'm so confused.
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Apr 16, 2011
OS=FC14 x86_64
DM=Gnome
I've installed pure-ftp, and the firewall is open on port 21, the router has port forwarding.
I can connect to this machine, from my smart-phone and a laptop using its IP Address 77.xx.xx.xxx
I'm getting user OK but its not accepting my password or one I just made on another account
This is whats happening:-
What layer of extra security is stopping this working, as the guy attempting access is trying to send a file to big to attach to an e-mail.
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May 22, 2009
I *had* a server with 6 SATA2 drives with CentOS 5.3 on it (I've upgraded over time from 5.1). I had set up (software) RAID1 on /boot for sda1 and sdb1 with sdc1, sdd1, sde1, and sdf1 as hot backups. I created LVM (over RAID5) for /, /var, and /home. I had a drive fail last year (sda).After a fashion, I was able to get it working again with sda removed. Since I had two hot spares on my RAID5/LVM deal, I never replaced sda. Of course, on reboot, what was sdb became sda, sdc became sdb, etc.So, recently, the new sdc died. The hot spare took over, and I was humming along. A week later (before I had a chance to replace the spares, another died (sdb).Now, I have 3 good drives, my array has degraded, but it's been running (until I just shut it down to tr y.
I now only have one replacement drive (it will take a week or two to get the others).I went to linux rescue from the CentOS 5.2 DVD and changed sda1 to a Linux (as opposed to Linux RAID) partition. I need to change my fstab to look for /dev/sda1 as boot, but I can't even mount sda1 as /boot. What do I need to do next? If I try to reboot without the disk, I get insmod: error inserting '/lib/raid456.ko': -1 File existsAlso, my md1 and md2 fail because there are not enough discs (it says 2/4 failed). I *believe* that this is because sda, sdb, sdc, sdd, and sde WERE the drives on the raid before, and I removed sdb and sdc, but now, I do not have sde (because I only have 4 drives) and sdd is the new drive. Do I need to label these drives and try again? Suggestions? (I suspect I should have done this BEFORE failure).Do I need to rebuild the RAIDs somehow? What about LVM?
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Jun 19, 2011
Am unable to send mail from Outlook to my Postfix SMTP server.
Am getting the following in the /var/log/maillog.
Code:
Think I've pretty much followed the instructions correctly here.
[url]
Also, I looked for the PID of the smtpd and did a strace on it.
Code:
Code:
However, when I looked at the permission of this file, it should be accessible by everyone.
Code:
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Jun 10, 2010
The following config works and creates a good VM in Xen:
Code:
# Kernel Setup
kernel = "/boot/vmlinuz-2.6.18.8-xenU"
# Memory
memory = "256"
# Disk
disk = [
"file:/opt/xen/domains/110/sda1.img,sda1,w",
"file:/opt/xen/domains/110/swap.img,sda2,w"
]
# container name
name = "110"
hostname = "boo"
# Networking
vif = ["type=ieomu, bridge=xenbr0"]
# VNC
vnc = 1
#vfb = [ 'type=vnc,vncdisplay=2,vnclisten=0.0.0.0,vncpasswd=110' ]
# Behavior Settings
root = "/dev/sda1"
extra = "fastboot"
But when I uncomment the VFB line, I get the following error after it hangs for at least 30 seconds:
Code:
[root@customer 110]# xm create boo.cfg
Using config file "./boo.cfg".
Error: Device 0 (vkbd) could not be connected. Hotplug scripts not working.
Part two of this question:
Sometimes it actually works, and a port is opened. When this happens, nmap shows the VNC ports open and I can connect via the VNC client, but it just hangs at "Connection established." and no VNC display shows up. I've tried multiple VNC clients (TightVNC, TightVNC Java Console, RealVNC), but they all fail to connect. Does VNC through Xen require X to be started in order to function? I was under the impression that it would show the console screen.
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Sep 19, 2009
I had a power failure the other day and my server shutdown abruptly. After bringing the server up I noticed that the /var partition came up as read only. I was not able to edit the crontab, not able to write to files within /var/log/ and do other write operations within /var.
I did a mount and it showed that /var was mounted read and write but when trying to run certain operations the system was still saying that it was read only.
[Code]...
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Jun 7, 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. 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 error
mdadm: Not enough 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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Oct 4, 2010
i installed a new centos 5.5 1 old server hp ml380 g3 series on 2gb ram, 72gb raid 1+0 scsi disk
after running 1 sucessfull day next morning i found no response of ping, telnet, putty, ssh. when i check physically machine the mouse keyboard was hang, i reboot machine, then it says kernel panic failure mounting hardware, then next time i reboot the o/s centos start book properly and running. i check the dmesg logs, can someone guide me how to check cpu,raidcontroller,memory,harddrive are getting failed or what hardware exactly choking out.
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Jun 22, 2011
I am running or was running a mail server. It used the titles service to scan emails but keeps bringing up a temporary failure right. But when I run the command 'amavisd' It brings up this error here:
[Code]...
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Oct 29, 2010
Before to describe my problem I want to say that I searched a lot on the internet and I think I tried all the solutions provided by other users to similar problems.
I've got an IBM xSeries 346 server running CentOS 5.5 with all updates applied with yum.
The video card is an ATI Radeon (lspci says: 01:06.0 VGA compatible controller: ATI Technologies Inc Radeon RV100 QY [Radeon 7000/VE]).
Everything worked fine until a bad day where there was an environmental power failure and the server crashed.
I turned it on, I manually check the file system, some files went lost and after the reboot the X server didn't start.
After the first boot I had problem with /etc/rc.d/rc.sysinit, sbin/multipath.static and /dev/cpu/microcode, I solved them and now the message it shows is:
"Failed to start the X server (your graphical interface) It is likely that it is not set up correctly. Would you like to view the X server output to diagnose the problem?"
I choose OK and it appears an empty log, if I go in /var/log/gdm and I do an ls -al:
total 0
-rw-r--r-- 1 root root 0 Oct 28 04:44 :0.log.4
-rw-r--r-- 1 root root 0 Oct 28 04:44 :0.log.3
-rw-r--r-- 1 root root 0 Oct 29 04:52 :0.log.2
-rw-r--r-- 1 root root 0 Oct 29 04:52 :0.log.1
-rw-r--r-- 1 root root 0 Oct 29 04:52 :0.log
So a lot of empty log files.
I press enter on the OK that appears at the bottom of the screen and it says: Would you like to try to configure the X server?
I choose Yes, I enter the root password and appears the following messages:
Couldn't start X server on card 0
Couldn't start X server with old config, trying with a fresh configuration
Then another messages:
Trying to restart the X server, I press enter on OK and it loops the initial message ("Failed to start the X server...)
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Jan 13, 2010
I have two ubuntu boxes. One is a 9.04 desktop edition and the other is a 9.10 server edition I am working on some code that needs to be highly tolerant of bad network connections. It sends transactions to a central database, but when the network is not available, it caches them locally to retry later.
I have the code working beautifully on my desktop box. but when I test it on this other box (the one running server edition) there is a HUGE DELAY every time it tries and fails to send a transaction to the database when the network is down.
I tested a little further, and I found that if i unplug my network cable and run ping somehost on the desktop, it fails instantly saying "ping: unknown host somehost" But if I unplug the cable on the server box and run the same ping command it lingers for about 40 seconds before the ping fails.
Does anybody have any idea why this might be happening? Is this a 9.04 vs 9.10 difference? Is this a desktop vs server difference? Is there some package I can install, or some config setting I can change that will make the server box insta-fail just like the desktop does?
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