Re: x86_64 - Unable to boot DomU

[David F Barrera <dfbp@us.ibm.com>]

So, I am not the only one, then. Thanks for your reply.

David

Robin van Leeuwen wrote:

> I have the same here after last pull
>
>     VFS: Cannot open root device "hda1" or unknown-block(0,0)
>
> only my hda1 maps to a ext3 on a lvm device...
>
> [Debian unstable/testing, last pull 22-08-05 18:00]
>
>
> David F Barrera wrote:
>
>> I've built Xen with the latest hg source pull, and I am not able to 
>> boot domU on my x86_64 boxes using configurations and setups that 
>> have previously worked. Has something changed since late last week 
>> that would require a change in my domU configuration file?
>>
>> When creating DomU, I get the following error message:
>>
>> VFS: Cannot open root device "sdb2" 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)
>>
>> The file system for DomU is ext3, and I've made sure that it is built 
>> in xenU kernel.
>>
>> This are the xm dmesg lines displayed when error occurs:
>>
>> (XEN) (file=grant_table.c, line=1071) Grant unref rd(5) ld(0) 
>> frm(d485) flgs(0).
>> (XEN) (file=traps.c, line=878) Non-priv domain attempted 
>> RDMSR(00000000c0000080,00020000,00020000).
>> (XEN) (file=traps.c, line=870) Non-priv domain attempted 
>> WRMSR(00000000c0000100,00000000,00000000).
>> (XEN) (file=traps.c, line=870) Non-priv domain attempted 
>> WRMSR(00000000c0000102,00000000,00000000).
>> (XEN) (file=traps.c, line=878) Non-priv domain attempted 
>> RDMSR(00000000c0000080,00000000,00000000).
>> stop_this_cpu disable_local_apic
>>
>> This is the domU configuration file:
>>
>> # Kernel image file.
>> kernel = "/boot/vmlinuz-2.6-xenU"
>> # Optional ramdisk.
>> # ramdisk = "/boot/initrd-2.6.11.12-xenU"
>> # The domain build function. Default is 'linux'.
>> builder='linux'
>> # Initial memory allocation (in megabytes) for the new domain.
>> # memory = 256
>> memory = 512
>> # A name for your domain. All domains must have different names.
>> name = "vm1"
>> disk = [ 'phy:sdb1,0811,w','phy:sdb2,0812,w' ]
>> # Set if you want dhcp to allocate the IP address.
>> # vif = [ 'mac= AA:00:00:47:CB:34, bridge=xen-br0' ]
>> # Set if you want dhcp to allocate the IP address.
>> #dhcp="dhcp"
>> # Set netmask.
>> #netmask = '255.255.255.0'
>> # Set default gateway.
>> # gateway = '9.53.94.0'
>> # Set the hostname.
>> # hostname= "vm%d" % vmid
>>
>>
>> # Set root device.
>> root = "/dev/sdb2 ro"
>> # Sets runlevel 4.
>> # extra = "4"
>> #==============
>>
>> David F Barrera
>>
>>
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@lists.xensource.com
>> http://lists.xensource.com/xen-devel
>
>
>
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