37 messages in com.xensource.lists.xen-devel[Xen-devel] Real root on real device ...
FromSent OnAttachments
Matt Ayres14 Nov 2003 14:51 
Bin Ren14 Nov 2003 15:07 
Matt Ayres14 Nov 2003 15:27 
Matt Ayres14 Nov 2003 15:33 
Bin Ren14 Nov 2003 15:35 
Bin Ren14 Nov 2003 15:37 
Bin Ren14 Nov 2003 15:48 
Matt Ayres14 Nov 2003 15:54 
Bin Ren14 Nov 2003 16:02 
Matt Ayres14 Nov 2003 16:14 
Bin Ren14 Nov 2003 16:24 
Matt Ayres15 Nov 2003 12:52 
Bin Ren15 Nov 2003 13:04 
Matt Ayres15 Nov 2003 13:27 
Matt Ayres15 Nov 2003 13:40 
Bin Ren15 Nov 2003 13:45 
Bin Ren15 Nov 2003 15:55 
Bin Ren15 Nov 2003 16:00 
Matt Ayres15 Nov 2003 16:04 
Bin Ren15 Nov 2003 16:11 
Matt Ayres15 Nov 2003 16:16 
Bin Ren15 Nov 2003 16:23 
Matt Ayres15 Nov 2003 16:23 
Matt Ayres15 Nov 2003 16:24 
Matt Ayres15 Nov 2003 16:27 
Bin Ren15 Nov 2003 16:53 
Gregory Newby15 Nov 2003 22:31 
Keir Fraser16 Nov 2003 02:03 
Keir Fraser16 Nov 2003 02:03 
Matt Ayres16 Nov 2003 02:11 
Matt Ayres16 Nov 2003 02:15 
Matt Ayres16 Nov 2003 02:22 
Keir Fraser16 Nov 2003 02:30 
Keir Fraser16 Nov 2003 02:35 
Matt Ayres16 Nov 2003 02:36 
Keir Fraser16 Nov 2003 02:37 
Keir Fraser16 Nov 2003 02:39 
Subject:[Xen-devel] Real root on real device proper configuration
From:Gregory Newby (new@arsc.edu)
Date:11/15/2003 10:31:43 PM
List:com.xensource.lists.xen-devel

On Sat, Nov 15, 2003 at 03:52:56PM -0500, Matt Ayres wrote:

I took the plunge and re-installed this server with RedHat 9. I no longer receive the Java exception errors. I am having a problem with the domains finding their root device. I've tried to specify it everywhere possible. ...

Matt, have you *ever* managed to boot a virtual domain that has root on its own device? I'm having similar problems to you...I'm thinking there is something subtle going on, and might try your approach of starting with a fresh RedHat 9 system (currently it's SuSE 9).

I'm going to upgrade my JDK from 1.4.1_02 to Sun's 1.4.2, too.

Meanwhile, output looks like this:

# xenctl script -f/etc/xen-mynewdom14 Domain defaults: name XenoLinux size 0 vifs 1 domainImage /boot/xenolinux.gz domainInitRD null rootDevice /dev/sdd1 rootArgs null usrDevice null NWIP 137.229.71.14 NWGW 137.229.71.1 NWMask 255.255.255.240 MaxDomainNumber 20 NWNFSServer 169.254.1.0 NWNFSRoot null XIToolsDir /usr/local/bin/ args Failed to build domain using: /usr/local/bin/xi_build 8 /tmp/xen-image-32233.tmp
1
ip=137.229.71.14:169.254.1.0:137.229.71.1:255.255.255.240:grid-14.arsc.edu:eth0:off
root=/dev/sdd1 "

("xenctl domain list" says the domain exists, but it's not running and basically is only good for killing).

xen-mynewdom14 contains:

domain new -hgrid-14.arsc.edu -t" root=/dev/sdd1 DOMID=14 " physical grant -psdd1 -r domain start

(I've tried adding other devices, but all of /boot, /usr, /etc and so forth are on /dev/sdd1, with a custom fstab. /dev/sdd1 is not the root for any other domain, and is not mounted by others)

xenctl.xml contains:

<?xml version="1.0"?> <domctl_defaults> <domain_name>XenoLinux</domain_name> <domain_image>/boot/xenolinux.gz</domain_image> <domain_vifs>1</domain_vifs> <root_device>/dev/sdd1</root_device> <nw_ip>137.229.71.14</nw_ip> <nw_gw>=</nw_gw> <nw_mask>=</nw_mask> <nw_nfs_server>169.254.1.0</nw_nfs_server> <max_domain_number>20</max_domain_number> <xi_tools_dir>/usr/local/bin/</xi_tools_dir> </domctl_defaults>

The give and take between xenctl.xml and the script (xen-mynewdom14 in this case) just doesn't seem to matter. I know it is seeing /boot/xenolinux.gz because in earlier tests it wasn't. But what is going wrong is a mystery.

A working example of booting a virtual domain with a specific IP address from a specific (non-CD) device would be very helpful.

I'll grab the xeno-unstable again after this weekend, in the hopes that the problems are related to the Java program Bin mentioned.

-- Greg

My script consists of:

domain new -ntest1 -k16768 -v1 -4192.168.1.51 -g192.168.1.1 -htest1.office.tektonic.net -d/dev/sda2 -tro root=/dev/sda2 -ainit=/linuxrc 4 DOMID=2 physical grant -psda2 -r domain start

Everything starts up fine, but it cannot find the root device. Here are some snippets from the console:

[18] Kernel command line: ip=192.168.1.51:169.254.1.0:192.168.1.1:255.255.0.0:test1.office.tektonic.net:eth0:off
init=/linuxrc root=/dev/sda2 ro ... [18] root_device_name = sda2 [18] VFS: Cannot open root device "sda2" or 08:02 [18] Please append a correct "root=" boot option [18] Kernel panic: VFS: Unable to mount root fs on 08:02

I've tried to specify "/dev/sda2" in as many places as possible, however it keeps on trying to load just "sda2". I am using xen-unstable as I am testing under VMware and need the BusLogic SCSI support.

On Fri, 2003-11-14 at 19:25, Bin Ren wrote:

On 15 Nov 2003, at 00:14, Matt Ayres wrote:

Seems it comes back to the prior Java problem.

[root@vpc docs]# xenctl script -f/etc/xen-mynewdom Domain defaults: name XenoLinux size 8192 vifs 1 domainImage /boot/xenolinux.gz domainInitRD null rootDevice /dev/hda2 rootArgs ro usrDevice null NWIP 169.254.1.0+ NWGW 169.254.1.0 NWMask 255.255.0.0 MaxDomainNumber 128 NWNFSServer 169.254.1.0 NWNFSRoot null XIToolsDir /install/bin/ args init=/linuxrc 4 DOMID=+ Domain created with arguments: /install/bin/xi_create 8192 XenoLinux Domain built with arguments: /install/bin/xi_build 21 /tmp/xen-image-11626.tmp 1 ip=169.254.1.21:169.254.1.0:169.254.1.0:255.255.0.0::eth0:off init=/linuxrc 4 DOMID=21 root=/dev/hda2 ro VIF 0 initialized with arguments: /install/bin/xi_vifinit 21 0 169.254.1.21

Anyway, we nearly had our xencel scripts work. Just add one line to /etc/xen-mynewdom:

domain new physical grant -p/dev/hda2 domain start

And then try again. See any further message after /install/bin/xi_vifinit ..... ?

If you want to see XenoLinux boot message in the newly created domain, run as root:

xen_nat_enable xen_read_console&

before run 'xenctl'

**************** Another exception has been detected while we were handling last error. Dumping information about last error: ERROR REPORT FILE = (N/A) PC = 0x40402f52 SIGNAL = 11 FUNCTION NAME = (N/A) OFFSET = 0xFFFFFFFF LIBRARY NAME = (N/A) Please check ERROR REPORT FILE for further information, if there is any. Good bye. /install/bin/xenctl: line 13: 2997 Unknown signal 33 $JAVA $ARGS -jar $(dirname $0)/xenctl-cmdline.jar $*

This is very weird.

Please first try the above to see whether the new domain starts running or not.

-- Bin