Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi Philipp, On Tue, Mar 18, 2014 at 03:30:16PM +0100, Lars Ellenberg wrote: > On Tue, Mar 18, 2014 at 10:07:17PM +0800, Fengguang Wu wrote: > > Greetings, > > > > We get the below OOM errors in our KVM boot tests and they are > > bisected to > > > > commit 23361cf32b58efdf09945a64e1d8d41fa6117157 > > We have been there before: Yeah, sorry I forgot that.. Just tried the suggested "drbd.minor_count=8" and it helps! Thank you all for the tip! Cheers, Fengguang > .--- > | Date: Wed, 12 Jun 2013 18:11:43 +0800 > | From: Fengguang Wu <fengguang.wu at intel.com> > | To: Philipp Reisner <philipp.reisner at linbit.com>, drbd-user at lists.linbit.com, linux-kernel at vger.kernel.org > | Subject: Re: [drbd?] Kernel panic - not syncing: Out of memory and no killable processes... > | Message-ID: <20130612101143.GA13837 at localhost> > | > | On Tue, Jun 11, 2013 at 05:33:27PM +0200, Lars Ellenberg wrote: > | > On Fri, Jun 07, 2013 at 10:31:54AM +0800, Fengguang Wu wrote: > | > > Greetings, > | > > > | > > My "kvm -m 256" reliably goes Out Of Memory after this commit. It may > | > > not be the only one that eats up the memory, however I wonder how much > | > > memory consumption this commit added? Thanks! > > ... > > | > We scale certain mempools and reserves with > | > DRBD_MAX_BIO_SIZE/PAGE_SIZE * minor_count. > | > > | > DRBD_MAX_BIO_SIZE has been increased by this patch, > | > resulting in more memory allocated to those reserved pools. > | > > | > Please just scale down the "minor_count" parameter. > | > You can use the module parameter (e.g. modprobe drbd minor_count=8), > | > or, compiled in, use the kernel command line parameter drbd.minor_count=8. > | > > | > Though "minor_count" at some point used to be the hard limit for the number of > | > minor devices (allocation of an array of corresponding size), that has > | > long since changed, and now it is really only used as scaling factor for > | > these mempools. > | > | Got it, thank you very much for the helpful tips and explanations! > | I'll add the drbd.minor_count=8 option. > | > | Thanks, > | Fengguang > `--- > > Does that 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.