From: Josh Durgin <josh.durgin@dreamhost.com>
To: Tommi Virtanen <tommi.virtanen@dreamhost.com>
Cc: "Sławomir Skowron" <szibis@gmail.com>, ceph-devel@vger.kernel.org
Subject: Re: RBD attach via libvirt to kvm vm - VM kernel hang
Date: Wed, 28 Mar 2012 09:24:10 -0700 [thread overview]
Message-ID: <4F733B2A.7050902@dreamhost.com> (raw)
In-Reply-To: <CAORUGqAWnFz5uMOH=SAXb+n=ysMF9vvgGK-fqn0gdm5eDo9woA@mail.gmail.com>
On 03/28/2012 09:13 AM, Tommi Virtanen wrote:
> 2012/3/28 Sławomir Skowron<szibis@gmail.com>:
>> VM on-01 with config like in attachment (dumpxml) - hang, after
>> attaching rbd device with kernel_bug in attachment.
>
> [ 68.630913] BUG: unable to handle kernel NULL pointer dereference
> at 0000000000000049
> [ 68.632016] IP: [<ffffffff8130a6a5>] pci_find_capability+0x15/0x60
> ...
> [ 68.632016] Call Trace:
> [ 68.632016] [<ffffffff8131a9f7>] pci_set_payload+0xa7/0x140
> [ 68.632016] [<ffffffff8131ae38>] pci_configure_slot.part.6+0x18/0x100
> [ 68.632016] [<ffffffff8131af52>] pci_configure_slot+0x32/0x40
> [ 68.632016] [<ffffffffa003a7e8>] enable_device+0x188/0x9a0 [acpiphp]
> [ 68.632016] [<ffffffff81307349>] ? pci_bus_read_config_dword+0x89/0xa0
> ...
>
> Well, that sure looks like a bug. I can't tell whether it's in QEmu,
> the QEmu rbd driver, or what. Josh, have you seen a crash like this?
I've not seen a crash like this before. I'm not aware of RBD being
treated differently from other block devices in the pci layer in qemu,
so I'd guess this is a qemu or guest kernel bug.
Does attaching a non-rbd disk (still using the virtio driver) cause the
same problem? If not, what distro and kernel version is the guest
running?
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next prev parent reply other threads:[~2012-03-28 16:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-28 13:27 RBD attach via libvirt to kvm vm - VM kernel hang Sławomir Skowron
2012-03-28 16:13 ` Tommi Virtanen
2012-03-28 16:24 ` Josh Durgin [this message]
2012-03-28 19:36 ` Sławomir Skowron
2012-04-02 16:33 ` Tommi Virtanen
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