similar to: Cannot open root device

Displaying 20 results from an estimated 4000 matches similar to: "Cannot open root device"

2007 Apr 25
2
Raid 1 newbie question
Hi I have a Raid 1 centos 4.4 setup and now have this /proc/mdstat output: [root at server admin]# cat /proc/mdstat Personalities : [raid1] md2 : active raid1 hdc2[1] hda2[0] 1052160 blocks [2/2] [UU] md1 : active raid1 hda3[0] 77023552 blocks [2/1] [U_] md0 : active raid1 hdc1[1] hda1[0] 104320 blocks [2/2] [UU] What happens with md1 ? My dmesg output is: [root at
2009 May 08
3
Software RAID resync
I have configured 2x 500G sata HDD as Software RAID1 with three partitions md0,md1 and md2 with md2 as 400+ gigs Now it is almost 36 hours the status is cat /proc/mdstat Personalities : [raid1] md0 : active raid1 hdb1[1] hda1[0] 104320 blocks [2/2] [UU] resync=DELAYED md1 : active raid1 hdb2[1] hda2[0] 4096448 blocks [2/2] [UU] resync=DELAYED md2 : active raid1
2010 Dec 04
2
Fiddling with software RAID1 : continue working with one of two disks failing?
Hi, I'm currently experimenting with software RAID1 on a spare PC with two 40 GB hard disks. Normally, on a desktop PC with only one hard disk, I have a very simple partitioning scheme like this : /dev/hda1 80 MB /boot ext2 /dev/hda2 1 GB swap /dev/hda3 39 GB / ext3 Here's what I'd like to do. Partition a second hard disk (say, /dev/hdb) with three
2005 Nov 15
4
Turning root partition into a RAID array
I have a CentOS 4.2 system that was set up VERY quickly following the demise of its former life as a CentOS 3 server - you don't want the full story, but it had to be done quickly to get a company up and working following a slight disaster involving an electrician, a portable appliance safety tester and a pulled power cable - anyway, here's where I am at... Everything is running fine but
2005 Nov 28
1
centos4.2:raid1:grub
Hi! Whew, I have googled around a lot w/this but can't quite seem to come up w/the right answer. This system works beautifully w/nothing wrong w/it. But my goal is to be able to test the raid system by just unplugging hda to mimic a faulty drive and have it just carry on and boot from hdc. md0 = hda1/hdc1 /boot (primary boot partitions on both drives) md1 = hda2/hdc2 / is it possible to
2004 Dec 22
2
xenU wont boot, cannot open root device
Hi, I am trying to replace uml with xen, but I cant get the unpreviliged Domains booting.. Ive tested a cuple of filesystems in a file (ext3 or xfs formatted) and Ive also tried the ttylinux-xen image. But I always get this error: VFS: Cannot open root device "hda1" or unknown-block(3,1) Please append a correct "root=" boot option Kernel panic - not syncing: VFS: Unable to
2008 Feb 06
4
Installation problems with large mirrored drives
I am trying to install CentOS 4.6 to a pair of 750GB hard drives. I can successfully install to either of the drives as a single drive, but when I try to use both drives and mirror the partitions, I start having problems. Anaconda crashes as it is trying to format the drives. This is what I'm trying to create: /dev/md0: 200MB, /boot /dev/md1: 2GB, swap /dev/md2: rest of the
2006 Feb 10
1
question on software raid-1
I have a system that is RAID -1 configured as /dev/md0 is /dev/hda1 /dev/hdb1 /dev/md1 is /dev/hdb3 /dev/hdb3 it seems as though /dev/hda has failed.... I have another disk (identical model) that I can replace hda with. I know about the commands fdisk to repartion and raidhotadd /dev/md0 /dev/hda1 and raidhotadd /dev/md1 /dev/hda3 (to be ran after the system boots). BUT... how do I now get
2004 Dec 02
3
Tbench benchmark numbers seem to be limiting samba performance in the 2.4 and 2.6 kernel.
Hi, I'm getting horrible performance on my samba server, and I am unsure of the cause after reading, benchmarking, and tuning. My server is a K6-500 with 43MB of RAM, standard x86 hardware. The OS is Slackware 10.0 w/ 2.6.7 kernel I've had similar problems with the 2.4.26 kernel. I use samba version 3.0.5. I've listed my partitions below, as well as the drive models. I have a
2007 Aug 21
6
Saftware RAID1 or Hardware RAID1 with Asterisk
Dear All, I would like to get community's feedback with regard to RAID1 ( Software or Hardware) implementations with asterisk. This is my setup Motherboard with SATA RAID1 support CENT OS 4.4 Asterisk 1.2.19 Libpri/zaptel latest release 2.8 Ghz Intel processor 2 80 GB SATA Hard disks 256 MB RAM digium PRI/E1 card Following are the concerns I am having I'm planing to put this asterisk
2005 Oct 11
8
More on domU not starting
I get the following warning when running xend start, and a similar warning sometimes when doing xm commands: /usr/lib/python/xen/xend/XendNode.py:26: RuntimeWarning: Python C API version mismatch for module xen.lowlevel.xc: This Python has API version 1012, module xen.lowlevel.xc has version 1011. import xen.lowlevel.xc /usr/lib/python/xen/xend/xenstore/xstransact.py:10: RuntimeWarning:
2005 Aug 29
5
can''t create 1st domain on debian
Hi all I''ve taken the plunge and decided to set up Xen on my AMD64 machine. I want to use amd64 debian as the domain 0 O/S, then install a full amd64 debian dev kit and a couple of 32-bit linuxes on top. I''ve got an install of debian amd64 running as domain0, which boots up just fine. I boot it with dom0_mem=131072 (the machine has 1Gb of RAM). I then created some disk
2007 Mar 20
4
blktap howto
hi, i''m trying move from file: based disk to tap:aio but things don''t work i have centos4 dom0 with centos4 domU xen 3.0.4-testing changeset: 13138:d401cb96d8a0 self compiled [root@xen linux-2.6.16.38-xen]# grep XEN_BLKDEV_TAP .config CONFIG_XEN_BLKDEV_TAP=m config disk = [ ''file:/var/lib/xen/test.img,hda1,w'',
2007 Nov 21
8
resize an image file
I have a 100G disk on an old redhat 7.3 system. Filesystem Size Used Avail Use% Mounted on /dev/hda1 9.6G 2.4G 6.7G 27% / /dev/hda3 99G 6.1G 88G 7% /home hda2 is 2G swap I am trying to back that complete image up on my centos 5 system. I can do the dd if=/dev/hda bs=1M | ssh root at machine 'cat > disk.img' which gets me the whole 100G. As
2005 Dec 14
4
Centos + Xen 3.0 + Root on md = bad
Howdy folks, I''m trying to boot Xen 3.0 on a Centos 4(.2) system with root on a software raid1 volume. When booting the Xen kernel, ''raidautorun'' in the /init nash script fails to assemble either the root md or the raid5 md containing my LVM volumes. If I move root to /dev/hda1, the system boots fine. raidautorun still fails to assemble the md devices, but mdadm
2004 Jun 23
2
''ser_baud=xxx'' option gone away
The Xen boot option ''ser_baud=<baud>'' has been removed from the unstable tree. If you were still using this obsolete option then the effect is that you will get no serial output when you boot Xen, which may lead you to believe that there is a more serious problem. To fix this you must move to the new boot option: ''com1=<baud>,8n1'' -- Keir
2007 Oct 14
2
DomU stops on boot inside Dom0 while booting
I have installed xen on a node and while starting up a guest while in the kernel boot I am experiencing a hold/pause. The kernel stops in the boot sequence still loading the kernel at: stdout ... [ 3240.186441] xencons_init: Initializing xen vfb; pass xencons=tty to prevent this [ 3240.186538] Xen virtual console successfully installed as xvc0 [ 3240.186598] Event-channel device installed. [
2007 Oct 30
1
xen xm list: DomUs blocked
Hi I''m using Xen on my AMD64 / Ubuntu 7.10 server which I recently upgraded, and my 2 VMs are decidedly flaky. They seem to be blocked for most of the time, and networking doesn''t work properly. How can I debug this and get them online reliably? Any tips gratefully received! * I can log in via console or ssh, can ping the server''s NICs but can''t ping the
2007 May 03
1
best practice backup
Hi there, I am using tar to backup the whole system (specific directorues usr,lib,sbin,etc,var,home,root). On bare metal recovery I install the minimal portion of the syetm and then I throw the tarballs. Any opinions? D. Karapiperis -------------- next part -------------- An HTML attachment was scrubbed... URL:
2007 Dec 16
3
xen and quota
Hi guys, i am running xen 3.1.0 from sources at my debian server. at the domU it seems there are no quota functionality: quotacheck -mav quotacheck: Cannot stat() mounted device /dev/hda1: No such file or directory quotacheck: Cannot find filesystem to check or filesystem not mounted with quota option. cat /etc/fstab cat /etc/fstab # <file system> <mount point>