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Re: [Xen-users] Xen 3.1 / Xen 3.2 + DRBD 8.2.4

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Xen 3.1 / Xen 3.2 + DRBD 8.2.4
From: Kalle <kalle@xxxxxxxxxxx>
Date: Fri, 15 Feb 2008 11:21:13 +0200 (EET)
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Hi,

Version: 8.2.4 (api:88)
Linux node1 2.6.24.2 #3 SMP Mon Feb 11 16:02:06 EET 2008 i686 GNU/Linux

No problems in syncing.

But performance sucks baaaadly.
Load.avg's up to 200.00 when doing some punisment :))


Regards,
Kalle

Hi all,


It seems that there are problems using Xen Kernel with drbd 8-2.4 without tunning parameters...

I have encoutered new problems :
 - Node A failed with a kernel panic
 - When Node A restarted, drbd gone in "out of memory"...
 - I restarted node A in non xen environement (kernel 2.6.23 + drbd 8.0.6)
 - drbd successful synced

Does someone have correct parameters when using Xen Kernel and drbd > 8 ?

It seems that the proble appears when syncing big volumes (for exemple virtual machine...)

Cheers,

--
Serge Dewailly


Ralf Schenk wrote:

    Serge Dewailly schrieb:

        Hi Ralf,

        Could you please tell me what kernel version do you use ?
        I'm using a 2.6.18 version.


    Im using the XEN supplied kernel wich is

"Linux msiserver1 2.6.18.8-xen #3 SMP Fri Jan 18 23:49:47 CET 2008 x86_64 GNU/Linux"

    My DRBD module shows
    root@msiserver1:~# modinfo drbd
    filename:       /lib/modules/2.6.18.8-xen/kernel/drivers/block/drbd.ko
    alias:          block-major-147-*
    license:        GPL
    description:    drbd - Distributed Replicated Block Device v8.2.4

author: Philipp Reisner <phil@xxxxxxxxxx>, Lars Ellenberg <lars@xxxxxxxxxx>

    srcversion:     6780BBFB69F7B6AC97385B2
    depends:
    vermagic:       2.6.18.8-xen SMP mod_unload gcc-4.0
parm: minor_count:Maximum number of drbd devices (1-255) (int)
    parm:           allow_oos:DONT USE! (int)
    parm:           enable_faults:int
    parm:           fault_rate:int
    parm:           fault_count:int
    parm:           fault_devs:int
    parm:           trace_level:int
    parm:           trace_type:int
    parm:           trace_devs:int
    parm:           usermode_helper:string



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