[DRBD-user] 8.0.6 3048 Sync problem after updating kernel

Peter P GMX Prometheus001 at gmx.net
Fri Oct 12 13:29:40 CEST 2007

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

I have a problem with drbd 8.0.6

I have setup drbd on top of  lvm on two machines with debian etch 
(kernel 2.6.18-4-486). I had write access to the common drbd device by 
both machines. A change (copy of a new file) on machine A can 
immediately be seen on machine B and vice versa.

Now I want to migrate the first machine to production and have installed 
a new kernel 2.6.18-5-686. I have recompiled drbd 8.0.6 against the new 
kernel sources.

But now changes on machine A are not seen on machine B any more.  I have 
to detach B and then attach it again in order to get the new state of 
the disk. This should not happen - hein?

cat /proc/drbd shows that both sides are in sync after I have copied a 
new file to the disk
version: 8.0.6 (api:86/proto:86)
SVN Revision: 3048 build by root at sip2, 2007-10-09 23:05:16
0: cs:Connected st:Primary/Primary ds:UpToDate/UpToDate C r---
   ns:37 nr:255 dw:292 dr:14 al:0 bm:0 lo:0 pe:0 ua:0 ap:0
       resync: used:0/31 hits:0 misses:0 starving:0 dirty:0 changed:0
       act_log: used:0/127 hits:37 misses:0 starving:0 dirty:0 changed:0

Here is my drbd.conf. I had to comment  the lines with incon-degr-cmd 
and group, as starting drbd failed with these commands.

resource r0 {
 protocol C;
 #incon-degr-cmd "echo '!DRBD! pri on incon-degr' | wall ; sleep 60 ; 
halt -f";

 startup {
   wfc-timeout 0; degr-wfc-timeout     120;
 net {

 disk {
   on-io-error detach;

 syncer {
   rate        4M;
   #group       3;   # sync when r2 is finished syncing.

 on sip4 {
   device      /dev/drbd0;
   disk        /dev/mapper/Data-data1;
   meta-disk   internal;

 on sip2 {
   device      /dev/drbd0;
   disk        /dev/mapper/Data-data1;
   meta-disk   internal;

Does anyone have an idea?

With kind regards

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