Bug#784688: Thousands of "xen:balloon: Cannot add additional memory (-17) messages" despite dom0 ballooning disabled

From	Andy Smith <andy@strugglers.net>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#784688: Thousands of "xen:balloon: Cannot add additional memory (-17) messages" despite dom0 ballooning disabled
Date	2016-01-29 17:10 +0100
Message-ID	<qWjMu-5G8-29@gated-at.bofh.it> (permalink)
References	(2 earlier) <qUUds-88K-21@gated-at.bofh.it> <qVbeh-4b6-5@gated-at.bofh.it> <qVg4i-7AF-1@gated-at.bofh.it> <qVw94-2C5-1@gated-at.bofh.it> <qWiQr-4Xa-43@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Hi Ian,

On Fri, Jan 29, 2016 at 02:57:23PM +0000, Ian Campbell wrote:
> I spent a bit of time investigating this, but sadly I'm not able to
> reproduce the basis failure.

FWIW it was me who reported this with the packages in Debian stable
(linux-image-3.16.0-4-amd64 3.16.7-ckt20-1+deb8u3,
xen-hypervisor-4.4-amd64 4.4.1-9+deb8u3) when using
"dom0_mem=1024M,max:1024M" on the hypervisor command line.

I must admit I found this bug when searching for the error message,
and have only been seeing it printed a couple of times at guest
shutdown, not thousands of times.

So if having it printed a couple of times isn't considered a bug,
I'm sorry if I've led you astray here. Might be worth finding a way
to remove it anyway though; anyone having a problem is going to keep
searching for it thinking it is relevant to their case.

At the moment I am avoiding seeing the message at all by running with
only "dom0_mem=1024M" on the command line. What's the disadvantage
of not having the "max:1024M" there?

Cheers,
Andy

Thread

Bug#784688: Thousands of "xen:balloon: Cannot add additional memory (-17) messages" despite dom0 ballooning disabled KSB <ksb@inbox.lv> - 2016-01-22 21:00 +0100
  Bug#784688: Thousands of "xen:balloon: Cannot add additional memory (-17) messages" despite dom0 ballooning disabled Ian Campbell <ijc@debian.org> - 2016-01-25 15:10 +0100
    Bug#784688: Thousands of "xen:balloon: Cannot add additional memory (-17) messages" despite dom0 ballooning disabled KSB <ksb@inbox.lv> - 2016-01-25 19:40 +0100
      Bug#784688: Thousands of "xen:balloon: Cannot add additional memory (-17) messages" despite dom0 ballooning disabled Ian Campbell <ijc@debian.org> - 2016-01-26 11:00 +0100
      Bug#784688: Thousands of "xen:balloon: Cannot add additional memory (-17) messages" despite dom0 ballooning disabled Ian Campbell <ijc@debian.org> - 2016-01-26 13:50 +0100
        Bug#784688: Thousands of "xen:balloon: Cannot add additional memory (-17) messages" despite dom0 ballooning disabled KSB <ksb@inbox.lv> - 2016-01-26 19:00 +0100
          Bug#784688: Thousands of "xen:balloon: Cannot add additional memory (-17) messages" despite dom0 ballooning disabled Ian Campbell <ijc@debian.org> - 2016-01-27 12:10 +0100
            Bug#784688: Thousands of "xen:balloon: Cannot add additional memory (-17) messages" despite dom0 ballooning disabled Chad Dougherty <crd@andrew.cmu.edu> - 2016-01-27 15:40 +0100
            Bug#784688: Thousands of "xen:balloon: Cannot add additional memory (-17) messages" despite dom0 ballooning disabled Ian Campbell <ijc@debian.org> - 2016-01-29 16:10 +0100
              Bug#784688: Thousands of "xen:balloon: Cannot add additional memory (-17) messages" despite dom0 ballooning disabled Andy Smith <andy@strugglers.net> - 2016-01-29 17:10 +0100
                Bug#784688: Thousands of "xen:balloon: Cannot add additional memory (-17) messages" despite dom0 ballooning disabled Ian Campbell <ijc@debian.org> - 2016-02-01 14:20 +0100

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