new instance ERROR_down

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new instance ERROR_down Artur 2/8/13 8:19 AM
Hello,

This is my first setup of (self compiled) Ganeti 2.6.2 and Wheezy. I
tried to follow all the installation instruction.
While adding my first instance on my single node cluster the instance is
always ERROR_down and I can't start it.
i also tried to run burnin with following command but it always fails on
instance reboot test :
/usr/local/lib/ganeti/tools/burnin -o debootstrap+default -t plain
--disk-size 10G --mem-size 10G -v instance.name
I suppose it has something to do with GRUB or disk device name but i
don't how to fix it.
On instance startup i can see console for few seconds before it panics.
Below is the console log. What information can i provide to get some help ?

[    0.424569] List of all partitions:
[    0.424573] No filesystem could mount root, tried:
[    0.424579] Kernel panic - not syncing: VFS: Unable to mount root fs
on unknown-block(0,0)
[    0.424586] Pid: 1, comm: swapper/0 Not tainted 3.2.0-4-amd64 #1
Debian 3.2.35-2
[    0.424591] Call Trace:
[    0.424598]  [<ffffffff813467bc>] ? panic+0x95/0x1a5
[    0.424605]  [<ffffffff816abf7d>] ? mount_block_root+0x24e/0x27a
[    0.424611]  [<ffffffff81002930>] ? name_to_dev_t+0x7c9/0xe99
[    0.424617]  [<ffffffff816ac12b>] ? prepare_namespace+0x133/0x169
[    0.424623]  [<ffffffff816abc8b>] ? kernel_init+0x14d/0x152
[    0.424628]  [<ffffffff81354174>] ? kernel_thread_helper+0x4/0x10
[    0.424635]  [<ffffffff81352233>] ? int_ret_from_sys_call+0x7/0x1b
[    0.424640]  [<ffffffff8134d37c>] ? retint_restore_args+0x5/0x6
[    0.424645]  [<ffffffff81354170>] ? gs_change+0x13/0x13

--

Best regards,
Artur.

Re: new instance ERROR_down Artur 2/8/13 8:50 AM
I forgot to specify that it's a xen-pvm hypervisor.

# gnt-instance list
Instance                  Hypervisor OS                 Primary_node
 Status     Memory
instance.name             xen-pvm    debootstrap+default
gc2.netdirect.fr ERROR_down      -

--

Best regards,
Artur.
Re: new instance ERROR_down ultrotter 2/8/13 1:58 PM

Can you show a gnt-instance info? Possibly you have to update the root value passed to the kernel command line with the correct root partition name.

Thanks!

Guido

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Re: new instance ERROR_down Artur 2/9/13 8:56 AM
Hello,

Here it is :

# gnt-instance info --all
Instance name: clusterburn.netdirect.fr
UUID: f0058aa0-0359-4658-a8dc-a1973d8d1fc5
Serial number: 4
Creation time: 2013-02-08 12:05:41
Modification time: 2013-02-08 16:46:05
State: configured to be up, actual state is down
  Nodes:
    - primary: gc1.netdirect.fr
      group: default (UUID 0dc5c2eb-d2ad-4cce-9554-3f555e859237)
    - secondaries:
  Operating system: debootstrap+default
  Allocated network port: None
  Hypervisor: xen-pvm
    - blockdev_prefix: default (sd)
    - bootloader_args: default ()
    - bootloader_path: default ()
    - cpu_mask: default (all)
    - initrd_path: default ()
    - kernel_args: default (ro)
    - kernel_path: default (/boot/vmlinuz-3-xenU)
    - reboot_behavior: default (reboot)
    - root_path: default (/dev/sda1)
    - use_bootloader: default (False)
  Hardware:
    - always_failover: default (False)
    - auto_balance: default (True)
    - maxmem: 10240
    - memory: default (10240)
    - minmem: 10240
    - spindle_use: default (1)
    - vcpus: 3
    - NICs:
      - nic/0: MAC: aa:00:00:b5:f5:a6, IP: None, mode: bridged, link:
xen-br0
  Disk template: plain
  Disks:
    - disk/0: lvm, size 10.0G
      access mode: rw
      logical_id:  xenvg/22948986-c1bb-46dd-8d57-24cc143a0eca.disk0
      on primary:  /dev/xenvg/22948986-c1bb-46dd-8d57-24cc143a0eca.disk0
(254:0)

On Fri, 8 Feb 2013 22:58:04 +0100, Guido Trotter <ultr...@gmail.com>
wrote:
--

Best regards,
Artur.
Re: new instance ERROR_down Artur 2/11/13 6:18 AM
Hello,

Le 09/02/2013 17:56, Artur a �crit :
>     - blockdev_prefix: default (sd)
>     - root_path: default (/dev/sda1)
>
I played with these parameters but it can't boot my instance. Any idea ?

--

Best regards,
Artur.

Re: new instance ERROR_down ultrotter 2/11/13 6:33 AM
On Mon, Feb 11, 2013 at 3:18 PM, Artur <gan...@netdirect.fr> wrote:
> Hello,
>
> Le 09/02/2013 17:56, Artur a écrit :
>>     - blockdev_prefix: default (sd)
>>     - root_path: default (/dev/sda1)
>>
> I played with these parameters but it can't boot my instance. Any idea ?

This parameter is probably "/dev/xvda1" nowadays.

Thanks,

Guido
Re: new instance ERROR_down Artur 2/11/13 7:56 AM
Le 11/02/2013 15:33, Guido Trotter a �crit :
> On Mon, Feb 11, 2013 at 3:18 PM, Artur <gan...@netdirect.fr> wrote:
>> Hello,
>>
>> Le 09/02/2013 17:56, Artur a �crit :
>>>     - blockdev_prefix: default (sd)
>>>     - root_path: default (/dev/sda1)
>>>
>> I played with these parameters but it can't boot my instance. Any idea ?
> This parameter is probably "/dev/xvda1" nowadays.
>
Wow, i did it. :)

I set the parameters this way :

    - initrd_path: /boot/initrd-3-xenU
    - kernel_args: default (ro)
    - kernel_path: default (/boot/vmlinuz-3-xenU)
    - root_path: /dev/xvda1

Initrd was missing.

--

Best regards,
Artur.