From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54152) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WBNJm-0002SP-B8 for qemu-devel@nongnu.org; Thu, 06 Feb 2014 06:40:34 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WBNJi-0005aU-JA for qemu-devel@nongnu.org; Thu, 06 Feb 2014 06:40:30 -0500 Received: from mailpro.odiso.net ([89.248.209.98]:51118) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WBNJi-0005aA-7C for qemu-devel@nongnu.org; Thu, 06 Feb 2014 06:40:26 -0500 Date: Thu, 06 Feb 2014 12:40:18 +0100 (CET) From: Alexandre DERUMIER Message-ID: <80ddf64b-2a0a-40c6-ae63-a5ce3f68991f@mailpro> In-Reply-To: <52F36FC8.2010302@profihost.ag> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: Re: [Qemu-devel] [pve-devel] QEMU LIve Migration - swap_free: Bad swap file entry List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Stefan Priebe - Profihost AG Cc: qemu-devel , pve-devel@pve.proxmox.com >>PS: all my guests do not even have !!SWAP!! Not sure is related to swap file. I found an similar problem here, triggered with suspend/resume on ext4 http://lkml.indiana.edu/hypermail/linux/kernel/1106.3/01340.html Maybe is it a guest kernel bug ? ----- Mail original ----- De: "Stefan Priebe - Profihost AG" =C3=80: "Alexandre DERUMIER" Cc: pve-devel@pve.proxmox.com, "qemu-devel" Envoy=C3=A9: Jeudi 6 F=C3=A9vrier 2014 12:19:36 Objet: Re: [pve-devel] QEMU LIve Migration - swap_free: Bad swap file entry= Am 06.02.2014 12:14, schrieb Alexandre DERUMIER: > Do you force rbd_cache=3Dtrue in ceph.conf? no > if yes, do you use cache=3Dwriteback ? yes So this should be safe. PS: all my guests do not even have !!SWAP!! # free|grep Swap Swap: 0 0 0 Stefan > according to ceph doc: > http://ceph.com/docs/next/rbd/qemu-rbd/ > > "Important If you set rbd_cache=3Dtrue, you must set cache=3Dwriteback or= risk data loss. Without cache=3Dwriteback, QEMU will not send flush reques= ts to librbd. If QEMU exits uncleanly in this configuration, filesystems on= top of rbd can be corrupted." > > > > ----- Mail original ----- > > De: "Stefan Priebe" > =C3=80: pve-devel@pve.proxmox.com, "qemu-devel" > Envoy=C3=A9: Mercredi 5 F=C3=A9vrier 2014 18:51:15 > Objet: [pve-devel] QEMU LIve Migration - swap_free: Bad swap file entry > > Hello, > > after live migrating machines with a lot of memory (32GB, 48GB, ...) i > see pretty often crashing services after migration and the guest kernel > prints: > > [1707620.031806] swap_free: Bad swap file entry 00377410 > [1707620.031806] swap_free: Bad swap file entry 00593c48 > [1707620.031807] swap_free: Bad swap file entry 03201430 > [1707620.031807] swap_free: Bad swap file entry 01bc5900 > [1707620.031807] swap_free: Bad swap file entry 0173ce40 > [1707620.031808] swap_free: Bad swap file entry 011c0270 > [1707620.031808] swap_free: Bad swap file entry 03c58ae8 > [1707660.749059] BUG: Bad rss-counter state mm:ffff88064d09f380 idx:1 > val:1536 > [1707660.749937] BUG: Bad rss-counter state mm:ffff88064d09f380 idx:2 > val:-1536 > > Qemu is 1.7 > > Does anybody know a fix? > > Greets, > Stefan > _______________________________________________ > pve-devel mailing list > pve-devel@pve.proxmox.com > http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel >