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. > __ > please don't Cc me, but send to list -- I'm subscribed > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user Hi, 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, BC