From: Alexandre DERUMIER <aderumier@odiso.com>
To: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
Cc: qemu-devel <qemu-devel@nongnu.org>, pve-devel@pve.proxmox.com
Subject: Re: [Qemu-devel] [pve-devel] QEMU LIve Migration - swap_free: Bad swap file entry
Date: Thu, 06 Feb 2014 12:40:18 +0100 (CET) [thread overview]
Message-ID: <80ddf64b-2a0a-40c6-ae63-a5ce3f68991f@mailpro> (raw)
In-Reply-To: <52F36FC8.2010302@profihost.ag>
>>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" <s.priebe@profihost.ag>
À: "Alexandre DERUMIER" <aderumier@odiso.com>
Cc: pve-devel@pve.proxmox.com, "qemu-devel" <qemu-devel@nongnu.org>
Envoyé: Jeudi 6 Février 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=true in ceph.conf?
no
> if yes, do you use cache=writeback ?
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=true, you must set cache=writeback or risk data loss. Without cache=writeback, QEMU will not send flush requests to librbd. If QEMU exits uncleanly in this configuration, filesystems on top of rbd can be corrupted."
>
>
>
> ----- Mail original -----
>
> De: "Stefan Priebe" <s.priebe@profihost.ag>
> À: pve-devel@pve.proxmox.com, "qemu-devel" <qemu-devel@nongnu.org>
> Envoyé: Mercredi 5 Février 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
>
next prev parent reply other threads:[~2014-02-06 11:40 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-05 17:51 [Qemu-devel] QEMU LIve Migration - swap_free: Bad swap file entry Stefan Priebe
2014-02-05 20:15 ` Dr. David Alan Gilbert
2014-02-06 7:20 ` Stefan Priebe - Profihost AG
2014-02-06 10:22 ` Orit Wasserman
2014-02-06 10:49 ` Stefan Priebe - Profihost AG
2014-02-06 11:14 ` [Qemu-devel] [pve-devel] " Alexandre DERUMIER
2014-02-06 11:19 ` Stefan Priebe - Profihost AG
2014-02-06 11:40 ` Alexandre DERUMIER [this message]
2014-02-06 12:10 ` Stefan Priebe - Profihost AG
2014-02-06 14:03 ` Stefan Priebe - Profihost AG
2014-02-06 14:12 ` Marcin Gibuła
2014-02-06 19:51 ` Dr. David Alan Gilbert
2014-02-06 20:00 ` Stefan Priebe
2014-02-07 8:15 ` Alexandre DERUMIER
2014-02-07 8:17 ` Stefan Priebe - Profihost AG
2014-02-07 9:15 ` Dr. David Alan Gilbert
2014-02-07 9:20 ` Stefan Priebe - Profihost AG
2014-02-07 9:29 ` Marcin Gibuła
2014-02-07 9:30 ` Stefan Priebe - Profihost AG
2014-02-07 9:31 ` Dr. David Alan Gilbert
2014-02-07 9:37 ` Stefan Priebe - Profihost AG
2014-02-07 12:02 ` Stefan Priebe - Profihost AG
2014-02-07 12:21 ` Dr. David Alan Gilbert
2014-02-07 12:30 ` Stefan Priebe - Profihost AG
2014-02-07 12:44 ` Paolo Bonzini
2014-02-07 13:04 ` Stefan Priebe - Profihost AG
2014-02-07 13:08 ` Dr. David Alan Gilbert
2014-02-07 13:10 ` Stefan Priebe - Profihost AG
2014-02-07 13:15 ` Dr. David Alan Gilbert
2014-02-07 13:21 ` Stefan Priebe - Profihost AG
2014-02-07 13:19 ` Paolo Bonzini
2014-02-07 13:39 ` Stefan Priebe - Profihost AG
2014-02-07 13:45 ` Stefan Priebe - Profihost AG
2014-02-07 19:21 ` Stefan Priebe
2014-02-07 20:02 ` Dr. David Alan Gilbert
2014-02-07 20:10 ` Stefan Priebe
2014-02-08 19:23 ` Stefan Priebe
2014-02-10 9:30 ` Dr. David Alan Gilbert
2014-02-10 16:07 ` Dr. David Alan Gilbert
2014-02-10 18:53 ` Stefan Priebe
2014-02-13 20:06 ` Dr. David Alan Gilbert
2014-02-13 20:26 ` Stefan Priebe
2014-02-13 20:31 ` Stefan Priebe
2014-02-13 21:18 ` Stefan Priebe
2014-02-14 9:06 ` Dr. David Alan Gilbert
2014-02-11 13:32 ` Orit Wasserman
2014-02-11 13:33 ` Stefan Priebe - Profihost AG
2014-02-11 13:45 ` Orit Wasserman
2014-02-11 14:49 ` Stefan Priebe - Profihost AG
2014-02-07 9:59 ` Marcin Gibuła
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