Xen project Mailing List

Solution: apt-get (re)install hotplug (was Re: [Xen-devel] Re: Unable to find root device. domU??)

From: Nicholas Lee <emptysands@xxxxxxxxx>

Date: Fri, 14 Oct 2005 13:32:40 +1300

Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>

Delivery-date: Fri, 14 Oct 2005 00:30:01 +0000

Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:mime-version:content-type:content-transfer-encoding:content-disposition; b=HzJJTfCzmllOx12zy/BgnsOtZEAXIhRAIT7fVswfp8Aro6yTRauIjEU0o6Cx3L7ll2BQmrZIVcBrhb8ecesCIyjQ6D6x9oIa2IYAohb6b4LyC95iEOnCxhTt1K4Be0bRvJvWTEeJqnhIg8wXnbB0YE69NgwWUuJbcdm7pAPO4cU=

List-id: Xen developer discussion <xen-devel.lists.xensource.com>

On 10/14/05, Nicholas Lee <emptysands@xxxxxxxxx> wrote: > VFS: Cannot open root device "sda1" or unknown-block(0,0) > Please append a correct "root=" boot option > Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) Just realised the 3.0 depends on hotplug which I'd uninstalled over the weekend. I did this unintentionally when bringing using dpkg --set-selections from a Xen 2.0 machine. Reinstalling and createy the privileged domU provided this change: md: ... autorun DONE. Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,1) Recompiling the standard domU and looks that the lack of hotplug was the problem. Or at least one of the problems. Only issue I seem to be seeing is: /dev/mem: mmap: Resource temporarily unavailable Couldnt get a file descriptor referring to the console No issue running using sda1 for /, which the same device name as used by /boot in dom0. nic@wuwei:/etc/xen$ sudo xm create breezy -c Using config file "breezy". Started domain breezy Linux version 2.6.12-xenU (nic@wuwei) (gcc version 3.3.5 (Debian 1:3.3.5-13)) #3 SMP Fri Oct 14 12:58:11 NZDT 2005 kernel direct mapping tables upto 10000000 @ 4be000-540000 Built 1 zonelists Kernel command line: root=/dev/sda1 ro 4 Initializing CPU#0 ... Network now works: nic@breezy:~$ ifconfig eth0 Link encap:Ethernet HWaddr AA:00:00:88:02:40 inet addr:192.168.88.240 Bcast:192.168.88.255 Mask:255.255.255.0 ... breezy is a 32bit base Breezy ubuntu domain with ubuntu-desktop installed. Performances seems to be about as expected: nic@breezy:~/sys/ufc$ ./speedf Running UFC-crypt for 100 seconds of virtual time ... Did 147898.370000 fcrypt()s per second. 3.5% less vs native 32bit: nic@wuwei:~/sys/ufc$ ./speedf Running UFC-crypt for 100 seconds of virtual time ... Did 153237.030000 fcrypt()s per second. -- Nicholas Lee http://stateless.geek.nz gpg 8072 4F86 EDCD 4FC1 18EF 5BDD 07B0 9597 6D58 D70C _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel

©2013 Xen Project, A Linux Foundation Collaborative Project. All Rights Reserved.
Linux Foundation is a registered trademark of The Linux Foundation.
Xen Project is a trademark of The Linux Foundation.