Re: [Xen-users] Help with system

["Nuno L. Ferreira" <nunolf@xxxxxxxxx>]

Olá Gilberto,

Not going to help much ... just to give some feedback.
I never saw that error, and I just installed a CentOS 54 x86_64 on a 
Quad AMD   server (it installs  xen 3.0.3, aka xen 3.1.2 or something) 
but I do not remember to have that error. I'm now with xen 3.4.2, and 
from xend.log I cannot see that BUG error.
The only think I notice different from what I'm used to see is your 
kernel : I have 2.6.18-164.15.1.el5xen, you have 
2.6.18-164.15.1.el5.*centos.plusxen*
I expect that if you install a from a CentOS repo you will get the same 
kernel as me, but I'm wrong then.
Cheers,
N.

Gilberto Nunes wrote:
> Hi...
>
> I have install CentOS 5.4 with Xen 3.0.3...
>
> I get this message from kernel:
>
> Apr  5 09:59:14 zebra kernel: BUG: warning at lib/kref.c:32/kref_get() 
> (Not tainted)
> Apr  5 09:59:14 zebra kernel:
> Apr  5 09:59:14 zebra kernel: Call Trace:
> Apr  5 09:59:14 zebra kernel:  [<ffffffff8023824d>] kref_get+0x38/0x3d
> Apr  5 09:59:14 zebra kernel:  [<ffffffff8025a440>] kobject_get+0x12/0x17
> Apr  5 09:59:14 zebra kernel:  [<ffffffff8024b57f>] 
> blk_get_queue+0x1f/0x26
> Apr  5 09:59:14 zebra kernel:  [<ffffffff887198f7>] 
> :blkbk:dispatch_rw_block_io+0x4db/0x5a2
> Apr  5 09:59:14 zebra kernel:  [<ffffffff80340368>] __next_cpu+0x19/0x28
> Apr  5 09:59:14 zebra kernel:  [<ffffffff8028792a>] 
> find_busiest_group+0x1db/0x44d
> Apr  5 09:59:14 zebra kernel:  [<ffffffff802883c0>] 
> dequeue_task+0x18/0x37
> Apr  5 09:59:14 zebra kernel:  [<ffffffff80288407>] 
> deactivate_task+0x28/0x5f
> Apr  5 09:59:14 zebra kernel:  [<ffffffff8026ef47>] 
> monotonic_clock+0x35/0x7b
> Apr  5 09:59:14 zebra kernel:  [<ffffffff80262dd3>] 
> thread_return+0x6c/0x113
> Apr  5 09:59:14 zebra kernel:  [<ffffffff80340af5>] 
> kobject_cleanup+0x39/0x7e
> Apr  5 09:59:14 zebra kernel:  [<ffffffff88719d2c>] 
> :blkbk:blkif_schedule+0x36e/0x456
> Apr  5 09:59:14 zebra kernel:  [<ffffffff887199be>] 
> :blkbk:blkif_schedule+0x0/0x456
> Apr  5 09:59:14 zebra kernel:  [<ffffffff8029bdab>] 
> keventd_create_kthread+0x0/0xc4
> Apr  5 09:59:14 zebra kernel:  [<ffffffff80233bef>] kthread+0xfe/0x132
> Apr  5 09:59:14 zebra kernel:  [<ffffffff80260b2c>] child_rip+0xa/0x12
> Apr  5 09:59:14 zebra kernel:  [<ffffffff8029bdab>] 
> keventd_create_kthread+0x0/0xc4
> Apr  5 09:59:14 zebra kernel:  [<ffffffff80233af1>] kthread+0x0/0x132
> Apr  5 09:59:14 zebra kernel:  [<ffffffff80260b22>] child_rip+0x0/0x12
> Apr  5 09:59:14 zebra kernel:
>
> I do not know if this is a Xen Bug or CentOS or a Kernel BUG...
>
> I use this kernel:  2.6.18-164.15.1.el5.centos.plusxen #1 SMP Wed Mar 
> 17 20:32:20 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
> But doesn't matter what kernel I use come from CentOS mirror with xen 
> support...
> I allways get that kernel message....
>
> Somebody already have thi problem too???
>
> Thanks for any advice...

--
==============================================
Nuno Ricardo Santos Loureiro da Silva Ferreira

NMR Spectroscopy Research Group
Bijvoet Center for Biomolecular Research
Utrecht University
Bloembergen gebouw
Padualaan 8, 3584 CH Utrecht
The Netherlands

P: +31.(0)30.253 9932
F: +31.(0)30.253 2652
E: n.l.ferreira@xxxxx
W: http://nmr.chem.uu.nl
==============================================


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