Re: [Xen-users] Can't find root when start vm

[Jose Legido <jose@xxxxxxxxxx>]

On 10/02/11 11:13, James Harper wrote:
>> Hello.
>> I can't start Virtual Machine, have the message:
>>  Waiting for root file system ... done.
>> Gave up waiting for root device.  Common problems
>> .....
>> ALERT!  /dev/xvda2 does not exist.  Dropping to a shell!
>>
>> I have installed Xen 4 in a debian squeeze:
>> # uname -a
>> 2.6.32-5-xen-amd64 #1 SMP Wed Jan 12 05:46:49 UTC 2011 x86_64
> GNU/Linux
>> xen-hypervisor-4.0-amd64                4.0.1-2
> The
>> Xen Hypervisor on AMD64
>>
>> I have created the virtual machine with this command:
>> # xen-create-image --size=2Gb --swap=128Mb --dhcp --dist=stable
>> --dir=/home/xen --hostname=debian
>>
>> My debian.cfg is:
>> kernel      = '/boot/vmlinuz-2.6.32-5-xen-amd64'
>> ramdisk     = '/boot/initrd.img-2.6.32-5-xen-amd64'
>> vcpus       = '1'
>> memory      = '128'
>> root        = '/dev/xvda2 ro'
>> disk        = [
>>                   'file:/home/xen/domains/debian2/disk.img,xvda2,w',
>>                   'file:/home/xen/domains/debian2/swap.img,xvda1,w',
>>               ]
>> on_poweroff = 'destroy'
>> on_reboot   = 'restart'
>> on_crash    = 'restart'
>>
>> In my Server the filesystem is /dev/sda1.
>> I have tried with:
>> root        = '/dev/xvda1 ro'
>> root        = '/dev/sda1 ro'
>> root        = '/dev/sda2 ro'
>>
>> And the same problem
>>
>> In the /dev vm I have:
>> (initramfs) ls /dev
>> char console core cpu_dma_latency fd full hvc0 hvc1 hvc2 hvc3 hvc4
> hvc5
>> hvc6 hvc7 input kmsg mapper mem network_latency network_throughput
> null
>> port psaux ptmx pts random snapshot ttyx urandom vcs vcs1 vcsa vcsa1
>> vga_arbiter xen zero
>>
>> I have tried with vcs vcs1 vcsa vcsa1 but have the error:
>> mount: mounting /dev/vcs1 on /root failed: No such file or directory
>>
>> Any idea? I'm making wrong something?
>>
>> A lot of thanks!
>>
> Does /dev/xvda1 exist? 
No, only vcs, vcsa and sda
> Is the frontend block device driver compiled as a
> module?
I have installed xen from aptitude install. I didn't configured frontend
block device driver, should I?
> James


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