I'm setting up a raid 5 on several hard disks with a layer of lvm on top for good measure.I know the recent kernels support growing software raid, but since centos runs 2.6.18, I wanted to make sure it'll work. Does the centos kernel support growing raid devices?
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I'm working on a server and noticed that the to RAID5 setup is showing 4 Raid devices but only 3 Total devices. It's on a fully updated CentOS 5 system that only has three SATA drives, as it can not hold anymore. I've done some researching but am unable to remove the fourth device, which is listed as removed. The full output of `mdadm -D /dev/md2` can be see below. I've never run into this situation before.Anyone have any pointers on how I can reduced the Raid Devices from 4 to 3? I have tried
mdadm /dev/md2 -r failed
mdadm /dev/md2 -r detached
but neither work and since there is no block device listed I'm not quite sure how to get things back in sync so it's only seeing the three drives.
/dev/md2:
Version : 0.90
Creation Time : Tue May 25 11:07:04 2010
Raid Level : raid5
[code]....
Does this mean kmod-xfs is no longer needed in centos 5.4 x64?
View 2 Replies View RelatedI had been testing the this link Raid Setup
I can do this in the installation phase, no issue, but I have to know how to make it in a production server.
I follow, read and test the article 3 times without any success, went I try to boot my machine with the raid disk it show error about that cannot find my root "/dev/root"
mount: could not find filesystem '/dev/root'
...
setuproot : moving /dev failed: no such fie or directory
no fstab.sys
[Code]....
But I still don't know what I have done wrong, this is my 3rd time that I try this without any luck, I'm running Centos 5.3 updated. Both disk are the same size.
I have installed CentOS 5.3 with Xen on a PowerEdge 2650 machine with 6GB of RAM. As usual, PAE was already enabled so I did not have any problem with utilising all of the memory. However after upgrading to the latest release of the kernel (2.6.18-128.7.1.el5xen), memory available decreased to 4GBs. Then I switched back to the old kernel and 6GB was there. Then finally have switched back to the new kernel and 6GB is again there. So now PAE seems to be enabled but what concerns me is the inconsistent behaviour. (Also I am not sure the reason was the upgraded kernel.)
View 2 Replies View RelatedI try to set up a 5 nodes cluster and a shared Coraid Storage with conga but it fails with "Shared Storage Support" checked.The message is:'A problem occurred when installing packages: Packages of set "Clustered Storage" are not present in available repository' and it is shown under every node on the next sceen after I submit.The pc where conga runs is on the same subnet (192.168.xxx.xxx) and it has the same /etc/hosts of the other nodes.In that pc runs a proxy too and the nodes go out through it (that pc has 2 NICs)Every node (2.6.18-128.1.14.el5-xen-x86_64) is patched whith the last yum update (this morning) the same is for the pc (2.6.18-128.1.14.el5).Every node has 4 NICs , 2 NICc towards the storage the others in bonding towards the WAN.Every node is exactly alike, they have been installed with the ks.cfg generated from the first node and they all have the support for Clustering, Virtualization, and Clustered Storage.
View 1 Replies View RelatedThe installer can't see my raid controller (I assume) as I'm getting the following error:"Error opening /dev/mapper/isw_jbhgjgjj_Vol0: No such device or address"It just sees them as 4 individual drives: sda, sdb, sdc and sdd.Please note that I have set up the RAID 5 in the controller bios interface and the image name is Vol0, which it seems that it tries to load but for some particular reason it can't.I have also tried different bios settings and nothing worked.
View 3 Replies View RelatedMy problem is that I'm trying to install CentOS 5.4 x86_64 DVD ISO on Supermicro X7SBI server with installed Adaptec RAID 3405 controller.
I created RAID 5 array and is working fine (adaptec status says Optimal) but I can't install CentOS to that array (1.5TB size).
Whenever I try to install with: linux dd
I'm asked for a driver, which I have downloaded from Adaptec site and extracted contents to USB drive (in installation found as /sba1) which has now a lot of IMG and some ISO files on it.
I try to load (I simplified names) RHEL5.img, CENTOS.img... with x64 names (one exact name: aacraid driverdisk-CentOS-x86_64.img) and I always get the error message: "No devices of the appropriate type were found on this driver disk"
This is going on for a week now and I can't find the right driver or something I'm doing wrong to get install done.
I need your help urgently. I will shortly install Centos 5 on a HP DL380R05 E5420 Server with two HP 146GB 10k 2.5 SAS HP SP hard disks running hardware RAID-1. I am a newbie on CentOS, please advise me:
1. Do I need a Centos RAID device driver for hardware RAID-1 on the HP DL380R05 E5420 Server?
2. Should I use Centos i386 or Centos x86_64 in this case? Which one: CentOS 5.2 or CentOS 5.3?
3. Does Centos support Embedded NC373i Multifunction Gigabit network cards?
The following is my server's hardware configuration:
HP DL380R05 E5420 2GB Base AP Server(1) Quad-Core Intel Xeon Processor E5420 Two Embedded NC373i Multifunction Gigabit / 2 GB (2 x 1 GB) PC2-5300 Fully Buffered DIMMs (DDR2-667)/HP Smart Array P400/256MB Controller /Rack (2U)/Hot Plug Fully Redundant Fans Standard Two HP 146GB 10k 2.5 SAS HP SP HDD HP 1000W IEC C14 Cord RPS Kit
I've a Centos 5.1 server on S5000vsa Intel board with 6 bay HD in raid 1 mode (2 HD), and working fine until I've decide to make a yum update. Today the Centos is 5.4 but seems necesssary to upgrade the megasr driver for the raid function (i.e. , is not possible to contact the raid firmware trought Web Console 2). I've download the last megasr driver from Intel and I follow the instruction to upgrade the driver with s.o. installed, but when I start the server and choose via grub the new img boot file, the display show :
megasr.ko invalid module format -1 and stop. The linux version is the same in the machine (uname -a) and from the driver (2.6.18-164.9.1.el5). Another question : in Intel instruction spoken about megasr.o , but on img file I found a megasr.ko . I think instructions referre to old linux 2.4
I have been using SLES 10 SP1 so far with about 6TB Raid system without problems.I have upgraded the OS to CentOS 5.3 i386 and I have noticed the kernel can not recognize raid system larger than 2TB.Is there any parameters that I have to set ? or the i386 distribution simply does not support larger raid, so I have to use x86_64 version, instead?
View 1 Replies View RelatedI am running a CentOS 5.5 system which does NOT support VT Technology, so I am unable to use Xen HV. I am very happy with OpenVZ other than the fact that it doesn't support Windows, only Linux.I'd like to have VMWare Server 2.x installed, but it appears that OpenVZ changes the Kernel to, in my case, 2.6.18-194.3.1.el5.028stab069.6. The default kernel on my system is 2.6.18-194.3.1.el5.i386.If I change grub to load 2.6.18-194.3.1.el5.i386, VMWare will work but OpenVZ will not. If I change grub to load 2.6.18-194.3.1.el5.028stab069.6, OpenVZ will work, but VMWare will not.If I try to run /usr/bin/vmware-config.pl while in the 2.6.18-194.3.1.el5.028stab069.6 kernel, I get an error of:
None of the pre-built vmmon modules for VMware Server is suitable for your running kernel. Do you want this program to try to build the vmmon module for your system (you need to have a C compiler installed on your system)?Using compiler "/usr/bin/gcc". Use environment variable CC to override.
What is the location of the directory of C header files that match your running kernel?[/usr/ src/ linux/ include]I'm so lost as what to do now..is there anyway I can compile both of the kernels together somehow?
Will Redhat support CentOS under any circumstances? I have heard at my employer that if you setup you system with CentOS and then on down the line you find you need RHEL support that you can purchase a license from Redhat and they will support your CentOS installation.Is that an official policy at Redhat? Unofficial? Or completely untrue?
View 2 Replies View RelatedI have DELL R310 server with PERC 200H controller and RAID 5 configured already.This is my first time I want to install CentOS and seems like a new challenge for me I've read some articles on Wiki and posts on this forum and didn't find any information how to install CentOS on RAID 5.I only noticed that if there is fake or software RAID1 it should be switched off and made by OS configuration.I think PERC 200H is separate controller so RAID 5 is hardware RAID, is there anybody who can confirm ?My problem is that when I try to install CentOS it doesn't see any hard disks ... I looked for drivers on DELL web site and there is driver for Red Hat 6. I tried to install it using linux dd command but it doesn't recognize. Is there anybody else who met such problem ?
View 3 Replies View RelatedI was growing a 3 disk raid 5 to a 4 disk raid 6.I used mdadm --grow /dev/md0 --level=6 --raid-devices=4 backup- file=/home/user/Desktop/md0.backup for the grow.The drive I added was /dev/sde1. Well it was going strong for like 2-3 days and last time I checked it was at 73% rebuild.Well the frikin power went out on me and when I came back home I can't get the array assembled.
I just have a fear that i lost my superblocks but I'm also a moron when it comes to this stuff.. I would like to think not, but I'm sure there are much smarter people than I on this issue. Any help would help cause of course I have a lot of stuff on my raid with 3 2tb drives.. the irony is I was converting to raid 6 to make sure I had really good safety net.
i have recently bought a system which has intel atom and my Lan card hasn't been installed on the system, i am using centos 5.2, i have read in some articles that Centos 5.4 directly support this LAN Card,so will upgrading the kernel for the Operating system help, or i have to download the whole iso for 5.4 and install it over the existing if upgrading the kernel will help which file i need to download to upgrade the kernel and where can i download that file.
View 3 Replies View RelatedI am trying to connect a RAID Box to the server via LSI 8880EM2 RAID controller.The raid box is FUjitsu Externus DX60 with raid 1 configured.The server is Fujitsu Primergy SX300 S5 with LSI 8880EM2 RAID card.The external raid box is being recognised by the raid controllers bios.
The server runs CentOS 5.5 64bit. I have installed the megaraid_sas driver from LSI website and MegaCLI utility but CentOS still fails to see the box.MegaCLI utility, when launched from CentOS, recognises the raid box, CentOS does not(no mapping being created in /dev).
I have also tried to create a logical RAID0 HDD on one physical HDD(as seen by MegaCLI) with MegaCLI utility in CentOS.The result was success and the new logical drive could have been used, but when restarting the server, the controllers' bios fails with an error (not surprised(one logical RAID0 on one physical HDD)) and configuration is being erased.
Has anyone tried connecting 8880EM2 controller to a raid box with raid configured on the box, running it all under CentOS and what were the results.
I tried to installed Centos5.4 version on Dell PC intel corei3 inspiron580s and succeeded but found some issues following below
1 Hardware issue for LAN driver ( Broadcomlink(TM)gigabit ethernet)
2 Display Driver not support and also missing Xorg.config file (i.e ., My Screen Starts from center of screen )
3. What is minimum configuration for centos 5.4 ?
The first server I installed installed fine. The second server, installed with the same config, went to "kernel panic not syncing no init found try passing init= option in kernel" error. I tried reinstalling but it keeps going to that error after install reboot. The storage is ISCSI connected via Intel Server Adapter, which allows it to boot from ISCSI. Not sure if that's the cause for the problem, but the first server is connected to the same ISCSI and installed just fine.
Is there a way that I can make sure ISCSI module installs during installation? Although I think it is installed since it's able to copy the files and setup /dev/sda. I just wana make sure that it installs during setup.
I built a home server (NAS/WWW/SSH/media server etc) and chose CentOS 5 as the OS (stability, easy of configuration).I was just about to start tuning the power consumption when I realised that the kernel CentOS uses is so "old" that it does not support the latest reduced power consumption enhancements that Linux has achieved in big strides in the recent past (we are probably still talking 6-12+ months ago e.g. tickless kernel)..
So my questions; 1) I know CentOS was maybe not meant for home servers (certainly its not its primary purpose), but if it is, any ideas of what kind of power consumption it takes (I know its relative) and if there are particular power consumptions that are worthwhile?
2) Do you recommend me compiling my own 2.6.21+ kernel from kernel.org or am I just likely to have compatibility issues (I really did not want to do that) or when is CentOS 5.4 supposed to have a newer 2.6.21+ version kernel?
Was it wrong of me in principle to choose CentOS for a home server when I am power conscious? (I don't have a low-power VIA processor either but a P4 so I am really just hoping to make do with software changes).
I am an old days RH release user(from 6.x) and just switching back from Debian/Ubuntu to CentOS on some servers, but I can not understand the kernel update strategy currently enabled in CentOS.There are two boxes, with almost identical installation, but recently there was an auto update of kernel on one box. This auto update also seems to issue an auto reboot on the machine, which is unacceptable on server machines.
View 2 Replies View RelatedI am going to be using CentOs 5.4 for a home storage server. It will be RAID6 on 6 x 1TB drives. I plan on using an external enclosure which is connected via two SFF-8088 cables (4 drives a piece). I am looking to try and find a non-RAID HBA which would support this external enclosure and allow to use standard linux software raid.
If this is not an option, I'd consider using a hardware based raid card, but they are very expensive. The Adaptec 5085 is one option but is almost $800. If that is what I need for this thing to be solid then that is fine, I will spend the money but I am thinking that software raid may be the way to go.
I have centos 5.3 workin on mini itx atom 330. i have some problem with the network when i use Samba. when i move big files the network goes down. i wanna to install the new kernel on my centos to try to fix the network problem with the new drivers includes on the new kernel.
View 2 Replies View RelatedI 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.
View 2 Replies View RelatedI've just setup a new centos 5.3 server with a 3-disc raid 5 software RAID array. I've setup other software raid 5 arrays on this same hardware, whilst testing, and had no trouble... I only just installed 3 new drives and performed a new install from scratch.
Hardware is: 4800XP X2 64-bit, 2GB RAM, Albatron KI-690G mainboard with Marvel SATA controller (I think) - 4 ports.
SATA port 0 is system drive (OCZ vertex 32GB SSD)
SATA port 1 is Western Digital "green" 1TB 8MB cache SATA 2
SATA port 2 is Western Digital "green" 1TB 8MB cache SATA 2
SATA port 3 is Western Digital "green" 1TB 8MB cache SATA 2
Ports 1-3 in software raid MD0 (raid 5)
All of this was configured in the GUI setup, with LVM on top of software RAID 5 mounted on /var. Partition size is ~1.9TB
Trouble is I get all sorts of "hardware failure" messages at bootup and the MD driver reports it was only able to bring up 2 out of 3 drives in the RAID set... however the RAID set formatted fine during the setup?
Here is the relevent dmesg output...
I am trying to do 1Meg IO to one of the block devices but I can only get a maximum of 512K IO size. I can use the corresponding sg device to get 1Meg of IO. I was wondering if anyone knows why 1Meg IO to a block device is being broken down into 2 512K chunks? I have increased the /sys/block/sdg/queue/max_sectors_kb to 16384, but it has made no difference.
My uname is : Linux virgo 2.6.18-128.el5 #1 SMP Wed Jan 21 10:41:14 EST 2009 x86_64 x86_64 x86_64 GNU/Linux
I have created a number of network block devices that I would like to delete, but I have been unable to find any information to do this.
I am using Centos 5.6 and my kernel is 2.6.18-238.el5.
I have been searching the internet for two days now and have noticed some other UNIX systems do have utilities for deleting unwanted devices but nothing for linux.
I created these devices with the vmware supplied PERL script vmware-mount.pl which in turn calls mknod.
The commands would look like:
mknod /dev/nbd0 b 43 0
mknod /dev/nbd1 b 43 1
......
I have tried deleting them from /dev which works temporarily but they come back when I reload the nbd module i.e.
modprobe -r nbd
modprobe nbd
and also if I reboot.
There is a directory tree for each device under /sys/block and I'm guessing this is how /dev is getting repopulated. I cannot remove the directory trees from /sys/block. I get this when I try:
rm: cannot remove `nbd15/queue/iosched/slice_idle': Operation not permitted
rm: cannot remove `nbd15/queue/iosched/slice_async_rq': Operation not permitted
...... there are 25 lines like this ....
When I do a vgsan I see this:Reading all physical volumes. This may take a while...
/dev/nbd0: read failed after 0 of 4096 at 0: Input/output error
/dev/nbd0: read failed after 0 of 4096 at 2199022141440: Input/output error
and in the messages log I see this:
Aug 15 21:04:06 udon-desktop kernel: nbd15: Attempted send on closed socket
Aug 15 21:04:06 udon-desktop kernel: end_request: I/O error, dev nbd15, sector 0
How can I discover unrecognized devices on centOS? what is the command ?
View 2 Replies View RelatedI'm using hughesjr' kernel-rt and would like to use ext4 as well. Since the stable release of ext4 is in 2.6.28, I'm wondering if there are any plannedupdates to this kernel-rt release? If not, is it possible to patch this version (2.6.24.7-65.el5rt.centos) of the kernel with stable ext4 patches/tools?
View 7 Replies View Relatedthere is a bug on the quad core B2 opteron cpu there is a beta patch available , but only for for 2.6.24 kernel i am very happy with my centos, and i would upgrade the kernel to try this patch i am new on linux, so i need a precise tutoriral to upgrade and keep the actual configuration of the kernel
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