[Drbd-dev] Problem with DRBD0.7 on Debian Sarge.

Lars Ellenberg Lars.Ellenberg at linbit.com
Tue Dec 20 16:43:31 CET 2005

/ 2005-12-20 15:49:26 +0100
\ Szymon Madej:
> Hello!
> I've strange situation at work today. I was doing reboot of secondary
> node in HA HeartBeat cluster, which use DRBD to distributed data, after
> recompilation of it's kernel. Old kernel lacks of High Memory Support.
> I've recompilled it, installed, recompilled the DRBD module for this
> kernel and installed it. Then I've executed lilo to write new bootsector
> and rebooted it. Before reboot primary node has consistent data on both
> DRBD devices that I'm using: drbd0 and drbd1. After reboot using my new
> kernel, (secondary) when DRBD was loaded and connected to primary node
> I've received such kernel mesasges (cutted out timestamp and machine name):

> kernel: drbd0: Resync done (total 1 sec; paused 0 sec; 0 K/sec)
> kernel: drbd1: sock_recvmsg returned -14
> kernel: drbd1: drbd1_receiver [699]: cstate SyncTarget --> BrokenPipe
> kernel: drbd1: short read receiving data block: read -14 expected 4096
> kernel: drbd1: error receiving RSDataReply, l: 4112!

you probably hit the bug which was fixed in 0.7.12:
 * Fixed a connection flip-flop bug when the two peers used different
    user provided sizes.

to verify this, first, do "drbdadm disconnect <bad_resource>".
then "drbdsetup /dev/drbdX show", as well as "cat /proc/partitions",
on both nodes.  compare the results.

the solution is probably to either make sure (using some --size
parameter if possible) that your devices are of the very same size,
or upgrade to 0.7.15, which should fix the problem.

: Lars Ellenberg                                  Tel +43-1-8178292-0  :
: LINBIT Information Technologies GmbH            Fax +43-1-8178292-82 :
: Schoenbrunner Str. 244, A-1120 Vienna/Europe   http://www.linbit.com :

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