[DRBD-user] Problems using image files with drbd, maybe unsupported?

Martin Fandel pingu.freak at gmx.de
Wed Oct 6 17:45:35 CEST 2010


yep ;). I've done a "xm shutdown trnagios" before starting it on the second node ;). works fine. i'm so happy! :) i was frustraded the last 2 days because i had configured drbd in many other enviroments without any problems. here i had the focus all time on the filesystem. that was my fault. it was not a drbd problem, more a human problem or yast. :) the day is saved ;). 

-------- Original-Nachricht --------
> Datum: Wed, 6 Oct 2010 17:25:17 +0200
> Von: Lars Ellenberg <lars.ellenberg at linbit.com>
> An: drbd-user at lists.linbit.com
> Betreff: Re: [DRBD-user] Problems using image files with drbd, maybe unsupported?

> On Wed, Oct 06, 2010 at 02:23:49PM +0200, Martin Fandel wrote:
> > Now it works :). My fault was that I've used yast2 instead of xm on the
> console. If I start the vm via xm, it works fine... yast ckzskz...
> > 
> > Here are the steps I've done:
> > 
> > virtual-n1 is secondary node!
> > 
> > Configuration / State details:
> > virtual-n1:~ # cat /proc/drbd 
> > version: 8.3.7 (api:88/proto:86-91)
> >  1: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate C r----
> >     ns:0 nr:794500 dw:968596 dr:24677 al:14 bm:1563 lo:0 pe:0 ua:0 ap:0
> ep:1 wo:b oos:0
> > virtual-n1:~ # cat /etc/drbd.d/xen.res
> > resource xen {
> >    protocol	C;
> >    disk {
> >       on-io-error	pass_on;
> >    }
> >    syncer {
> >       rate	100M;
> >    }
> >    net {
> >    }
> >    startup {
> >    }
> >    on virtual-n1 {
> >       device	/dev/drbd1 ;
> >       address	192.168.100.1:5001;
> >       meta-disk	internal;
> >       disk	/dev/sdc1;
> >    }
> >    on virtual-n2 {
> >       device	/dev/drbd1 ;
> >       address	192.168.100.2:5001;
> >       meta-disk	internal;
> >       disk	/dev/sdc1;
> >    }
> > }
> > virtual-n2:~ # cat /etc/xen/vm/trnagios
> > name="trnagios"
> > uuid="dce10d36-3498-50f5-505c-e61615da090e"
> > memory=512
> > maxmem=512
> > vcpus=1
> > on_poweroff="destroy"
> > on_reboot="restart"
> > on_crash="destroy"
> > localtime=0
> > keymap="de"
> > builder="linux"
> > bootloader="/usr/lib/xen/boot/domUloader.py"
> > bootargs="--entry=xvda2:/boot/vmlinuz-xen,/boot/initrd-xen"
> > extra="xencons=tty "
> > disk=[ 'file:/var/lib/xen/images/trnagios/disk0,xvda,w', ]
> > vif=[ 'mac=00:16:3e:00:97:38,bridge=br0', ]
> > nographic=1
> > 
> > Here we go, manual "unplanned failover" test:
> > 
> > virtual-n1:~ # drbdadm disconnect all
> > virtual-n1:~ # cat /proc/drbd 
> > version: 8.3.7 (api:88/proto:86-91)
> >  1: cs:StandAlone ro:Secondary/Unknown ds:UpToDate/DUnknown   r----
> >     ns:0 nr:822316 dw:996412 dr:24677 al:14 bm:1563 lo:0 pe:0 ua:0 ap:0
> ep:1 wo:b oos:0
> > virtual-n1:~ # drbdadm primary all
> > virtual-n1:~ # cat /proc/drbd 
> > version: 8.3.7 (api:88/proto:86-91)
> >  1: cs:StandAlone ro:Primary/Unknown ds:UpToDate/DUnknown   r----
> >     ns:0 nr:822316 dw:996412 dr:25277 al:14 bm:1563 lo:0 pe:0 ua:0 ap:0
> ep:1 wo:b oos:0
> > virtual-n1:~ # mount /dev/drbd1 /var/lib/xen/images/
> > virtual-n1:~ # ls -lha /var/lib/xen/images/trnagios/disk0 
> > -rw------- 1 root root 20G  6. Okt 14:15
> /var/lib/xen/images/trnagios/disk0
> > virtual-n1:~ # xm create trnagios
> > virtual-n1:~ # ssh trnagios
> > Password:
> > 
> > :D :D :D I'm sooooooo happy :). I thought I can trust yast in starting
> the vm after unclean cut. But this doesn't work... I'm fine with this
> solution. DRBD rocks!
> 
> And you are sure you  ssh'ed into your "newly started" trnagios now
> running
> on this host, not into the "still running" trnagios still running on the
> other?
> 
>  ;-)
> 
> -- 
> : Lars Ellenberg
> : LINBIT | Your Way to High Availability
> : DRBD/HA support and consulting http://www.linbit.com
> 
> DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.
> __
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