similar to: RAID problem when building new computer

Hello Since linux 2.6, the md layer has a feature called partitionable arrays. So instead of having two disks, creating an identical partition table on both and then putting those partitions in RAID 1, you take those two disks and put them in one partitionable RAID 1 array (in mdadm terms, "mdp") and create a partition table on the new RAID device. The advantages are quite clear

Hello all, I'm trying to install CentOS 6.3 to an mdadm partitionable array and not having any luck. The installer only allows me to create one file system per md device, or specify the md device as a LVM physical volume. I don't want to do either, I want to create one md device and create multiple partitions on top of the md device. I thought that perhaps the installer was preventing

virt-p2v was able to convert my centOS 5.2 physical machine to xen virtual machine and it runs great. Now, I am working on to convert this full virt machine to para virt . Under my domU i have installed kernel-xen (since it is needed ) , and edited my grub menu to use the installed kernel. My grub menu file in domU looks like: ---- kernel /vmlinuz-2.6.18-92.1.17.el5xen ro

Hi, I've written two small howtos, and would like to contribute them to the CentOS Wiki. The first one is "How to install CentOS 5 on software partitionable mdadm RAID1", and the second one "How to repair a software mdadm RAID5 with two or more failed disks (if you know that information is still on the disks and readable)". I think that the first one should be somewhere

hello, I am attempting to compile a Dom0 CentOS 5.2 guest from source, using XenLinux 2.6.18.8 with a Xen 3.2.1 hypervisor. I am able to compile the Dom0 kernel, but when I attempt to boot into it, I receive the following messages: mount: could not find filesystem ''/dev/root'' setuproot: moving /dev failed: No such file or directory setuproot: error mounting /proc: No such

Hi buddies I attempt to compile a kernel on CentOS 5.3. The kernel version is 2.6.31.6. All make procedure is running ok. I can generate initrd image with no problem too. But, when I try booting this kernel, I get Kernel panic: Setting up other filesystems. Setting up new root fs setuproot: moving /dev failed: No such file or directory no fstab.sys, mounting internal defaults setuproot: error

Hi All, I am trying to create an MD device. I am using the command: /sbin/mdadm --create --a /dev/md12 --level=1 --run --raid-devices=2 /dev/sda12 /dev/sdb12 to create the device, and to dynamically create the device file if needed. What I want is the device file to be created as /dev/md12, but with the -a flag it creates it as /dev/md<first unwsed minor number>. I have tried various

Hi. I used VMware Standalone converter 5.5 to convert a CentOS 5.3 machine from a Physical server to a Virtaul Machine on ESXi 5.1 . Thus far with every attempt to convert this machine I get a "Kernel panic" mount: could not find filesystem '/dev/root' setuproot: moving /dev failed: No such file or directory setuproot: error mounting /proc failed: No such file or directory

Hi all- I''m hoping someone can help me with this problem with Xen under CentOS 5.1 (RHEL 5.1) I''m having... This is the Xen package that comes stock with the distribution, I didn''t compile it from source. I can boot Domain0 and the hypervisor just fine. I''m trying to bring up a Xen guest VM and it crashes on boot, with this error: # xm create -c tcga1

Hi all, I am in a bit of a fix here, I have several Guests paravirtualized running on a Dom0 that is currently running the 2.6.18-92.1.22.el5xen Kernel. All my guests (administered by different people) have subsequently been updated to later versions of the kernel (namely 2.6.18-164.el5xen or 2.6.18-128.4.1.el5xen). Ones that are still running are using the Kernel 2.6.18-128.4.1.el5xen while

Hi all, After rebooting my CentOS 5.5 server, i have the following message: ================================== Red Hat nash version 5.1.19.6 starting EXT3-fs: unable to read superblock mount: error mounting /dev/root on /sysroot as ext3: invalid argument setuproot: moving /root failed: No such file or directory setuproot: error mounting /proc: No such file or directory setuproot: error mounting

Hi all, One of our Dell servers has failed badly, and one of the domU's has been corrupted in the process. It boots up to a point and then gives me a kernel panic: Loading dm-zero.ko module Loading dm-snapshot.ko module Scanning and configuring dmraid supported devices Scanning logical volumes Reading all physical volumes. This may take a while... No volume groups found Activating

Hello All, on a Centos5 system installed with software raid I'm getting: raid1: raid set md127 active with 2 out of 2 mirrors md:.... autorun DONE md: Autodetecting RAID arrays md: autorun..... md : autorun DONE trying to resume form /dev/md1 creating root device mounting root device mounting root filesystem ext3-fs : unable to read superblock mount :

I had a supermicro server SuperServer 1027R-WRF4+ and a old Dell PowerEdge 2950. In both machines I setup centos 6.5, which is running 3.10.34-11.el6.centos.alt.x86_64. I follow Xen4Cen wiki to setup Xen, I had other servers running Centos 5.x without issues. Now, once I build my vm's dom-u centos 6.5/centos 5.9 both x64, I receive different erros, let me show u the message I receive in my

i have seen this issue many places online, but haven''t found any solutions yet. when i enter: xm create debian.4-0.xen3.cfg -c i get a bunch of output, but the errors occur here: Scanning logical volumes Reading all physical volumes. This may take a while... No volume groups found Activating logical volumes Volume group "VolGroup00" not found Creating root device.

I have some suggested tweaks and changes to http://wiki.centos.org/HowTos/Install_On_Partitionable_RAID1 1. The user should be instructed to start rescue mode with networking in order to be able to retrieve the patch for mkinitrd. 2. The command to create /etc/mdadm.conf will result in an extra line "spares=1" while the array is still syncing. Adding " | head -1 " to the

Hi all, I compiled and installed Xen 3.2 source on FC8. Compilation and installation completed with no errors. However when I try to load Xen I get an error: Kernel panic - Attempted to kill init !!! This is my grub configuration: # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means

On 01/24/17 19:00, Gordon Messmer wrote: > On 01/24/2017 02:14 PM, m.roth at 5-cent.us wrote: >> So, it installed happily. >> Then wouldn't boot. > > What did the storage configuration look like, exactly? I'd guess that you put > one partition on each disk, combined those in a RAID1 MD array, made than an > LVM physical volume, and then created filesystems and

Trying to install Centos6 on my system (it's been running C5 for years). I've got a pair of drives, so I'm trying to use RAID-1. Previously I used a procedure where each partition was part of a separate RAID device, but this time I'm trying the HOWTO from the Centos WIKI on making a partitionable RAID pair. I've been having a lot of problems, but have also been working thru

Greetings - I am preparing to order a new desktop system for work. In general the new system will be a Dell Precision T3610 with two 3 TB drives. I plan on installing CentOS 7 as a KVM host, with virtual machines for Win 7 Pro and Linux Mint. I am looking for some advice or a good how-to on configuring software raid on the two drives, then using LVM for the host and virtual machines. I