[DRBD-user] kernel panics when connected

Bart Coninckx bart.coninckx at telenet.be
Wed Aug 6 20:48:28 CEST 2014

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

On 30 Jul 2014, at 14:39, Lars Ellenberg <lars.ellenberg at linbit.com> wrote:

> On Tue, Jul 29, 2014 at 12:09:51PM +0200, Bart Coninckx wrote:
>> Not sure how the output is supposed to look like, but what I have now
>> seems readable and provides quite some info. Does anyone can give me
>> pointers on what to look for? Where can one determine what is the
>> offending process?
> You are using an SCST patched kernel (iscsi_put_page_callback).
> Apparently that patch is not compatible with DRBD,
> or simply "forgets" to also patch DRBD as appropriate.
> You later posted that "disable_sendpage" seems to "improve stability".
> It changes timings, and thus also "life times" of page reference counts
> within the network stack.  Since the issue seems to be with page
> reference counting, that may well "appear" to help.
> -- 
> : 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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believe it or not but the SCST developers advice to activate the disable_sendpage parameter. So that seems to be the definitive solution,

Thank you all,


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