CentOS 5 :: CentOS 5.4 Does Not Boot Properly After RAID5 Recovery?
Mar 23, 2010
I had a sata drive go down on my software raid array a couple days ago..After replacing the defective drive, I rebuilt it using fdisk to set partitions and mdadm to add the drive back into the raid array.After getting md2 to mount to /mnt I copied the /mnt/etc/fstab and /mnt/etc/mdadm.conf to the /etc directory and rebooted..When I boot, my /dev/md2 partition is not mounting to / It is not loading all of the services at boot time it should.. the size of /dev/md2 on / is even wrong.. it should be about 1.3TBwhen I manually mount /dev/md2 to /mnt I can access all of my data, through /mnt/var/www/vhosts and so on.. I am at a loss, why is the machine booting to this craziness?All of my data, that I know of can be accessed when md2 is mounted to /mnt[root@ESS000272 etc]# cat mdadm.conf
# mdadm.conf written out by anaconda
DEVICE partitions
MAILADDR root
[code]....
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Mar 9, 2010
I had a corrupted superblock in my RAID boot drive (/dev/md0), which I fixed with fsck in Recovery Mode.
However, after rebooting, the same boot-up problem (hanging for hours) persists. When I re-enter Recovery Mode to examine the boot drive, I found its superblock was corrupted again (which I fixed again using fsck).
Is there a proper reboot procedure which is gentle on the boot drive, such that it doesn't corrupt it? Or, is something else amiss?
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Jun 26, 2009
I have looked thru the forums and I am not sure if LSI 8204ELP definitely works with Centos 5.3 or 5.2 or 5.1 or not. Can anyone who has had a positive experience with this hardware combination give some feedback etc. mobo is supermicro c2sbx [URL]
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Sep 12, 2009
Ok, as the title indicates I have a RAID5 array with 4 500GB SATA drives. This is the only drive configuration on the system (i.e. the OS also resides in the RAID array). I'm running CentOS 5 and need to know how to go about increacing the space in the RAID array by replacing the drives with 4 1TB drives.
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Feb 17, 2011
I have a CentOS 5 based Linux system with a 3Ware 9550SU RAID card and four 500GB drives set up in a RAID5 array (3 in the array and 1 hot spare).
I want to 'replace' these drives with four 2TB drives without data loss. My server case has a total of 8 drive bays all hot-swap and all attached to the RAID card, this means I have four empty drive bays on the RAID card.
One thought is to put the four new 2TB drives in the empty drive bays, configure them in a new RAID5 array. Then the question is now to I "mirror" the original RAID5 array over to the new one?
This is just a thought though, I am not sure it will work. In short my question to this forum is how do I accomplish this upgrade?.
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Mar 8, 2010
I've tried to type this message twice in detail, but the computer won't submit it. What are the proper steps to take when a SCSI drive fails in a RAID five array running CentOS 5.4?
Yes, I read the manual. On a Dell 6650 system the drive can't be rebuilt because it is not recognized as the correct size. Linux rescue doesn't work... won't find the linux partitions that are still there according to fdisk -l
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Feb 21, 2011
We have CentOS on an HP proliant g5 server and attached to it is an DAS with 3 branches of disks so 5 - 5 - 5 drives.Now what we had so far there is that every branch was on raid 5 and totaling 3 mounted drives each with 4TB (disks are 1Tb each).But a couple days ago something happened while i was replacing older drives with some bad sectors with new one. What I did is to remove old drive, put in new one, initialize and attach to array and rebuild starts.Now somehow 2 drievs ( as i was rebuilding 2 arrays at once) switched place.so disk on 1_1_5 and disk on 1_3_5 switched place. There coul dbe possibility that I made mistake and assigned them to different arrays when initializing but that is really hardly as i replaced one then later another so...
Anyway to the to the point.Is there painless option to remove 1 disk from array and then assign it to other array and then let raid rebuild everything normally?I;ve made backup of everything there so there is no fear of loosing anything...By the way at the same time when that switch happens a partition from 1 raid array completely dis speared and there is only unallocated space on that one right now.
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May 15, 2011
1 - I got the array up and running on three Seagate 1.5TB HDDs, filled it up in 6 months (mostly by putting all of my stuff in one place)
2 - Unknowingly, I bought a WD15EARS HDD, partitioned it as I would any normal drive and asked mdadm to grow my array over to the new partition
3 - Worried by abysmal read/write speed, I investigated, found out how to deal with the new HDD ( here or here )
4 - Being a newbie at this, I opted to do a trial run before wiping the disk and unmount/mount the partitions, LVM layers, SW RAID array. This is there I messed up.
[Code]...
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May 4, 2011
I switched over from Ubuntu because I realized Ubuntu sucks now (lol), but anyways... Now I'm trying to get Grub2 to boot up properly, but this "xputs" error pops up and drops me to the recovery prompt. I tried the grub-install dev/sda and all it did was recognize my Windows 7 OS (as Vista) and added it to the bootloader list and didn't fix the "xputs" issue.
I heard that doing a chroot is the most effective solution. Forgive me, but I don't know what "chroot" means or how effective it is. I can specify more information about where the OS is if needed. I have the boot flag set to the Debian OS at the hd(0,5) or sda5 I think, and Windows is at sda1 (I think). I just want to make sure I can fix this without damaging Windows, and I'll try to get more information.
Right now, I can only get into Windows or Debian with UBCD and Grub2 Super Disk and I know that sometimes Parted Magic could orderly mount the disks differently, so I don't know if it was sdaX or sdbX, but probably sdaX. I'll check again.
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Aug 4, 2010
Recently I built a web server for my clients to host in house. After talking with the web developer they informed me that i needed a CentOS computer with Drupal for them to design the website. This is my first Linux install and after spending hours upon hours configuring the server with FTP, SSH, and configuring our DD-WRT router with proper port forwarding we turned it over to the web designers to start work on the website.
A month goes by and the website is almost done, at this point we go to make a full backup of the hard drive. Due to a hardware problem it fried the circuit board of the hard drive. After attempting to recover the files myself we opted to send it to a HD data recovery facility to recover the information. We have received back a DVD containing the 2GB's worth of data from the CentOS hard drive. It contained 2 folders one for each of the partitions. I can view and see all the files on my windows machine and it appears that all of the data was recovered successfully. I harbored some hope that i could simply reinstall CentOS with the same account information and then just drop the recovered files on top of the new installation and have it start working.
I then reinstalled CentOS on another hard drive in the same computer and used the same credentials for installation. After i successfully booting into CentOS i turned off the machine and connected the hard drive it to my Windows bench machine. After booting into Windows i was unable to browse the hard drive. After doing more research and installing Ext2fsd i was able to see the 2 partitions CentOS had just created, but only able to access the Boot partition. After more research i discovered the default installation of CentOS creates a Raw file type for the 2nd partition and that is why i am having issues reading it inside of Windows.
I then downloaded a copy of Knoppix to see if this would allow me to write the old files over the new ones. After booting up the CD i could only browse to the /boot drive(and im not even sure if this is Knoppix's Virtual /boot or my CentOS /boot).
My question is what would be the best steps to recovery for my scenario? Can the files be placed to the drive and have everything restored? Is the only way to recovery thru reinstalling all applications and reconfiguring from scratch? How difficult is Drupal DB to recover in this type of scenario?
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Nov 10, 2009
I just upgraded by box from Fedora Core 9 to Centos 5.2. Finally!I have a 500GB SATA drive, it's partitioned into three equal size slices, hda1 through 3. The old Fedora was on hda1, I installed the new Centos on hda3. I instructed the installer to write the MBR to /dev/hda, not /dev/hda3. Fdisk says I have sector 0 unused.First, the system wouldn't boot - it just looped through the BIOS, rebooting over and over again. The BIOS sees the disk, but it never loaded Grub. I tried re-running grub-install /dev/hda, and not I get a Grub Error 17 after stage 1.5 loads.
I can boot from rescue OK, the grub.conf man menu.lst look fine, it's pointing to "root (hd0,2)". It's either the BIOS that can't find the MBR, or the MBR can't find Grub.When I looked at the disk with fdisk after the install, hda1 was still marked bootable, hda3 was not, so I swapped bootable flags but that has not made a difference. I also appended the new grub to the old grub thinking I could get the MBR (if it is there) to load the old grub and thence find the new Centos, but that didn't work either.Mobo is an old Shuttle AK35.Any ideas? Did I mess up by not telling the system to put the MBR on /dev/hda3? Is there a way to fix this without reinstalling?
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Mar 23, 2010
I have successfully installed CentOS 5.4, and after choosing it from the GRUB menu, I am getting the following error message:1706-Smart Array Controller Extended BIOS Data Area Memory Corrupted. Int 13h BIOS Cannot Continue - System Halted.I'm using two SAS disks that came along with the server, left the default RAID configuration (1+0) on a P410 controller
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Feb 22, 2011
Ive installed centos freebsd and mandriva but i want to manage grub from my centos and y create successfully a boot load for freebds. But for mandriva it just doesnt work... so how can a create a boot load entry for mandriva from grub centos?
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Sep 19, 2010
3 partitions (in order): Windows 7, CentOS and shared data partition.
I need to increase the size of the Windows 7 partition (c:windowswinsxs seems to be something not easily remedied).
GParted didn't work in moving things around (bad sector) so I wiped out its partition (# 2 out of 3) and I was able to increase the size of the Windows 7 partition (I can reinstall CentOS easily and not much work lost).
Except ... no more grub menu (unsurprising). This incantation does allow me to boot into Windows 7.
Is there any way of rebuilding the grub menu short of reinstalling CentOS (5.5)?
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Jun 9, 2009
I have a laptop that came with Windows Vista (64-bit) installed. I created a new partition and installed XP (also 64-bit) alongside it.Last night I shrunk my XP partition and created another new partition and installed Linux (CentOS 64-bit) on it. I made an error in judgment and didn't allocate enough space, so I need about 10 more gigs for the Linux partition. It boots up and runs, but I need about 10 more gigs of storage for the files I want to keep on the partition (and yes, they have to be on the partition, I definitely need to know how to do this, not a workaround)I went into Vista and shrunk the XP partition by 10 gigs, so now I have 10 gigs of free, non-partitioned space.
As it stands, when I start up the computer I get the GRUB boot loader. I can boot my Linux install or choose "Other" and be taken to the Vista boot loader. From there I can choose XP or Vista to boot.So, my question is... what is the best way to append the 10 gigs of free space to the Linux partition? Is this something I should do inside of Linux? I have the option to do it in Vista, but the partition shows up as "healthy" but without a file system type.I just don't want to screw up the boot loader, partitions or anything else.This isn't my area of expertise, so if anyone could give me a good suggestion or solid answer
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Jan 26, 2011
have all ways been hiding in the background read not say a thinglets start well i look after 2 dell poweredge 2650 with 12 gig ram installed servers has been running fine onwell i though it was time to upgrade to 5 all went fine till reboot Memory for crash kernel (0x to 0x) not within permissible range ! well what i have been reading this is the norm for now What is mean by ignore it? LoLwell so i did the system keeps boot till i get to this linesbin/mingetty: /sbin/mingetty: cannot execute binary file alot, and it shows. INIT: Id "5" respawning too fast: disabled for 5 minutes ...so maybe its a memory issue so took 8 gig out left 4 in the system now it reboot alls good with only 4 gig of ram installed so is there a way to fix it to use all the ram can i get the system boot on 4 gig and then add the 8gig later on
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Dec 16, 2009
I have a Windows 2003 server that runs a Win32 time server which synchronizes with off site time sources. I have a CentOS 5.4 server which I just configured and installed NTP on. For some reason, I keep getting time discrepancies even after the server is (apparently) synching with my local NTP server on the Windows box.
Hwclock is set to UTC true/etc/localtime is properly symlinked to appropriate /usr/share/zoneinfo fileNTPD is setup as a service which loads on startupNTP.conf is configured to only retrieve from my local Windows 2003 time serverntpq -p seems to verify that the system is indeed synching up properlyThe problem is, whenever I run the 'date' command it is displaying my system time in (presumably) UTC. That is, even though my the CentOS box appears to be synching up to the local time, it's not translating it into my proper time zone. Consequently, the date is always at -6 hours from the actual local time. It was my understanding that the hwclock is fine to remain at UTC as ntpd should be synching with my local Windows 2003 time server periodically and updating it, and the system time should be getting translated to my localtime.
what I do, after rebooting the box the hwclock and system clock display the improper time.Maybe I just have a fundamental misunderstanding of how this is supposed to operate.Update: I'm not sure why, but after I commented out the other servers and added a fudge declaration for my internal server and rebooted, everything is working as it should and the time is correct.I'm still not really sure if it was adding the "fudge <hostname> stratum 2" declaration that corrected things, or commenting out the additional hosts, so I'll leave this open if anyone cares to comment or contribute.
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Mar 28, 2009
I am trying to install CentOS 5.2 on an HP rp5700 desktop unit. These units were originally sold as a Point of Sales unit I believe, but HP also markets it as a high life cycle server for SMB market.I tried to load CentOS on this unit via CD (created from downloaded ISO of course). It presents the initial CentOS banner page and waits for the obligatory "enter" to continue. It begins the boot process up to discovering the PCI stuff and just locks up, no response. I have to power down to restart.Since this does not even get to the point of installing. I am at a loss what to do next. Has anyone had a similar issue with other PCs.The boot stops at the lineACPI: PCI Root Bridge [PCI0] (0000:00)
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Nov 18, 2009
I've Got one Problem with My Computer soon after success installation of when the boot-loader ask me to choose OS at CENTOS 5.4, multi boot boot-loader if i choose windows then computer tries to boot windows but fail and give the error message that there is a problem on reading the hard disk, But when i restart it and start with LINUX then computer start successful with no error message, now i do not know what to do cause i need to use Windows and all my programs are in windows..
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Apr 8, 2010
i want to change my server to a intel d510mo withoutchanging the installation.The old nstallation runs on a centos 5.4 asus amd board witha sata raid, sata-sil adapter in no raid modus.and that is the problem.i boot the centos on the intel board, and only the sata-sil module is loaded, so noata drive is found.How can i change this? udev? i disabled the scsi-hostadapter in modprobe.conf, but no
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Oct 25, 2010
I have a Raid5 software partitioned using LVM (at centos 5.2 installation). Actually the raid is composed by 3 320Gb HDD. I would like to replace them with 3 2T hdd, but I'm worried about the alignment issues of the upgrade. I know it is easy to align the raid partition URL But what will happen to the LVM partition? Reformat and install everything is not an option
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Aug 17, 2010
I have noticed my server do not shutdown properly sometimes.It should do it with this command in a cron with root session /sbin/shutdown -h now
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Nov 25, 2010
I have a centos 5.5 server running great, but i am having issues with my xen vm01 virtual machine. The first probelm is, i have created the vm01 fine and it was running ( even though i can not login into it ) by running:
vm console vm01
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Apr 6, 2010
How can I create/boot CentOs 5.3 ram image?I'm looking to create a CentOs ram image that once booted will not access the hard drive.
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Nov 27, 2010
I had Windows XP Pro 32 bit and CentOS 5.4 installed on my Dell M6400 laptop and life was wonderful. Until I had to reinstall Windows. In the process, I reformated the C: partition of the drive where the Windows operating system was installed. I was careful NOT to reformat anything else. Now I cannot boot CentOS. The drive that has both the Windows and CentOS still shows the same partitions as were there before I reinstalled Windows, namely:
NTFS (C:) 171.82 GB
/boot 102 MB
(F:) 60.96 GB
is where my CentOS partition has all of my linux data and apps. I assume /boot should be the boot partition for CentOS I use Acronis OS Selector to show the partitions to boot. Now CentOS doesn't show as an option even if I go through the process of trying to detect a CentOS boot partition using OS Selector. I have researched this in the forums but have not found anything that was of help. There was a thread from someone who had trouble booting Ubuntu on a system with Windows Vista and CentOS but I did not see anything there that looked like it would help in my situation.
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Sep 10, 2011
I applied the Kernel update that showed in the updater via the GUI.It now won't boot anymore.Memory for crash kernel (0x0 to 0x0) notwithin permissible range.WARNING calibrate_APIC_clock: the APIC timer calibration may be wrong.
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Feb 1, 2011
We have had a hardisk crash in our RAID1 webhosting server running CentOS5 and Plesk. We first realized something was wrong when our main site didn't load but showed MySQL errors. We then found out that the system was in read-only state. Something that also happened the day before yesterday, but we could fix with a FSCK. Then the system worked well til around 18 hours later when it crashed with the same sympoms. So, we rebooted the server and wanted to do a filesystem check again. But the HDD wouldnt even load. It was gone. Unfortunatelly it was not realized that the second disk in the system was also not working any more for some time now. Fortunatelly we had our main site backed up externally though. So we could re-install a fresh box and mounted the two drives to the system. We checked the harddisk. One is practically empty (the older one), the other has almost only files in 'lost + found' but these are all "numbered", no real filenames or so.
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Apr 8, 2010
I'm able to connect to ftp as a virtual user. It was also difficult as nowhere mentioned, that it should be done with SSL. Anyway I found the answer and got connection. But now I can't connect to ftp server as system user. It gives me "530 Permission denied", or if I delete the user from the file denied_users, - "530 Login incorrect".
1. Still I can't understand, how I can log in to FTP server with a system user.Also some other questions regarding this matter:
2. My httpd server Apache has a virtual hosts located in "/home" directory.The scripts create users in "/var/ftp virtual_users". Will it cause any problem if I will change them to "/home"? All I need to do with this is ability to have several virtual hosts in one server with separate access to each of them via FTP. And 1 account with access to all files in "/home".
3. In my ftp client I can see the owner of virtual host "ftp" instead of username.
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Nov 29, 2010
I am running Centos 5.5 X86_64 and recently after updating my server, I am having problem loading gnome. When the server boots, and begins to bring up the login screen theme, I get an error that states "Could not recognize the image file format for /usr/share/gdm/themes/TreeFlower/background.png" I am able to login after clicking ok to this message, and using the "simplistic" login manager. But when the users desktop loads, there are several errors pertaining to "unsupported image format" and none of the icons are displaying correctly. They are just the default "curvy page" icon for an unassociated file type. Some of the icons do not even show up at all.
Another thing I noticed wierd is that when I try to view a png, nothing happens. When I try to open one using gimp, I get an "unsupported file type" error. When I tried to click on the "add/remove software" button I get prompted for root pass, but nothing happens. So, I tried launching pirut from CLI, and I received the following error:
Quote:
[root@server ~]# pirut
Traceback (most recent call last):
File "/usr/sbin/pirut", line 41, in ?
from pirut import *
[code]...
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Aug 20, 2010
I haven't manually configured XWindows in a very long time, so I'm not very certain what I need to do anymore. Hopefully someone can provide some guidance. I just built up a new system that I'm trying to connect to a 47" LCD TV that provides a VGA connection. When the computer starts booting all of the text comes up just fine (1 or 2 characters on the left are chopped, but otherwise fine). When I tried to run the installer for CentOS5.5 I ran into a problem. The monitor(TV) wasn't getting a proper signal to display XWindows. In an effort to keep going, I reconnected the PC to an old monitor and did the install from there. That worked no problem. I ran all the latest updates hoping that maybe this was fixed in a patch. I then shutdown and reconnected to my TV. no luck. When it starts XWindows the screen doesn't display anything. I've tried fooling around with modifying the xorg.conf and adding an explicit "Monitor" section and set it to 640x480 with a VertRefresh of 60 (which is supposedly an acceptable format), but no luck. Can anyone provide any guidance on how to solve this problem. BTW I do know that the VGA connector on the TV works just fine because I can hook up my laptop (Windows XP) to it.
H/W Monitor: Olevia 747i (when nVidia on my laptop detects it, it is reported as 747-b11) Motherboard: Biostar MCP6PB M2+ Motherboard - Socket AM2+, �ATX, Audio, GeForce 6150 Graphics, SATA, RAID Graphics: Using the integrated GeForce 6150 chipset
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