Hi,
Found out that it didn't had anything to to with drbd or lvm...
I upgraded from 3.2.1 to xen-3.3.0...
No i can't start any domu's... regardless if they are on lvm drbd oder
local partiton...
Does anyone has any idea ?
xen4 conf # xm create test1.cfg
> Using config file "./test1.cfg".
> Error: Device 768 (vbd) could not be connected.
> Device /dev/xen3and4/hd23 is mounted in the privileged domain,
xen4 conf # xm create test1.cfg
> Using config file "./test1.cfg".
> Error: Device 768 (vbd) could not be connected.
> Device /dev/sda5 is mounted in the privileged domain,
another thing is... : is ist possible to make 20 different drbd devices
on one host ? drbd0 - drbd20 ? aren't there limits ?
On Wed, 2008-09-10 at 15:27 +0100, Robert Dunkley wrote:
> Hi Sebastian,
>
> I think you should split the volume into LVM partitions and then run a
> DRBD device for each partition. I run this config, RaidArray -> LVM ->
> DRBD8 -> Xen and it works well. You need the independence of one drbd
> device per VM otherwise things are difficult. You may also want to ask
> xen-users -at- antibozo.net for their DRBD script, on my Centos Xen 3.30
> setup it works much better, it also avoids the need for IMHO dangerous
> dual primary config.
>
> I synch multiple arrays with multiple DRBD devices at once. DRBD equally
> shares the array write bandwidth between DRBD devices. My Raid1 arrays
> manage 80Mb/second each write speed, 2 DRBD devices synching at once on
> each of the 3 arrays yields 40mb.sec per DRBD device which totals a
> perfect 240Mb/sec synch rate (I used Infiniband to link the two DRBD
> servers together so am not bound by the bandwidth constraints of GB
> Ethernet).
>
> Rob
>
> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Sebastian
> Igerl
> Sent: 10 September 2008 14:54
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] drbd8 - lvm - xen
>
> Hi,
>
> What I'm trying to to is to set up 1 drbd active/active device then
> split this with lvm creating about 20 volumes and then run xen on top of
> that lvm volums !
>
> I tried for days now and it isn't working... anyhow, do you see any
> problems why this shouldn't work..
>
> Should I create 20 drbd devices and use the drbd helper script for xen ?
> isn't using so many drbd syncs a lot of overhead ? never tried it...
>
>
> xen4 conf # xm create test1.cfg
> Using config file "./test1.cfg".
> Error: Device 768 (vbd) could not be connected.
> Device /dev/xen3and4/hd23 is mounted in the privileged domain,
>
>
> This is what i'm getting right now..
> /dev/xen3and4/hd23 isn't mounted...
>
>
>
> xen4 conf # cat test1.cfg
>
> kernel = "/usr/lib64/xen/boot/hvmloader"
> builder = "hvm"
> device_model = "/usr/lib64/xen/bin/qemu-dm"
> memory = "1024"
> maxmem = 2048
> maxmemory = 2048
> name = "test1"
>
> dhcp = "off"
> vif = ["type=ioemu, mac=00:16:3e:00:00:20, bridge=xenbr0"]
> #cpus = ""
> #vcpus = 1
> disk = ["phy:/dev/xen3and4/hd23,ioemu:hda,w" ]
>
> serial="pty"
> boot="c"
>
> vnc=1
> vncviewer=0
> keymap="de"
> vfb = [ "type=vnc, vncpasswd=ssss, vnclisten=0.0.0.0, vncdisplay=23" ]
> sdl=0
>
>
>
> since i'm using lvm on top of drbd, xen should'nt be aware of drbd..
> using only lvm it workd...
>
> mouting drbd-lvm2-device works too.... ( only on one site because i
> haven't set up any cluster filesystems.. )
>
>
>
> Thanks,
>
> Sebastian
>
>
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