From: bugzilla-daemon@bugzilla.kernel.org
To: kvm@vger.kernel.org
Subject: [Bug 60620] guest loses frequently (multiple times per day!) connectivity to network device
Date: Wed, 30 Oct 2013 08:58:26 +0000 [thread overview]
Message-ID: <bug-60620-28872-Cp2hdqdwM3@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-60620-28872@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=60620
Stefan Hajnoczi <stefanha@gmail.com> changed:
What |Removed |Added
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CC| |stefanha@gmail.com
--- Comment #13 from Stefan Hajnoczi <stefanha@gmail.com> ---
Michael Tsirkin and I are currently looking into a similar case. The bug can
be triggered when the guest transmits large packets using GSO. As a
workaround, try turning off TX offload features inside the guest:
# ethtool --offload eth0 tx off
# ethtool --offload eth0 tso off
# ethtool --offload eth0 ufo off
# ethtool --offload eth0 gso off
If the guest is already broken you can check whether it's the same bug by
looking at the output of "ifconfig <tap>" for the guest's tap device on the
host. If you see "RX dropped" > 0 then the virtio-net device is stuck.
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next prev parent reply other threads:[~2013-10-30 8:58 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-24 19:31 [Bug 60620] New: guest loses frequently (multiple times per day!) connectivity to network device bugzilla-daemon
2013-07-24 19:32 ` [Bug 60620] " bugzilla-daemon
2013-07-30 15:59 ` bugzilla-daemon
2013-07-30 18:42 ` bugzilla-daemon
2013-07-30 18:58 ` bugzilla-daemon
2013-07-30 19:03 ` bugzilla-daemon
2013-07-30 20:45 ` bugzilla-daemon
2013-07-31 19:43 ` bugzilla-daemon
2013-08-02 10:38 ` bugzilla-daemon
2013-08-02 11:03 ` bugzilla-daemon
2013-08-02 11:28 ` bugzilla-daemon
2013-08-02 12:34 ` Stefan Hajnoczi
2013-10-20 19:55 ` bugzilla-daemon
2013-10-20 20:34 ` bugzilla-daemon
2013-10-20 20:36 ` bugzilla-daemon
2013-10-30 8:58 ` bugzilla-daemon [this message]
2013-10-30 15:19 ` bugzilla-daemon
2013-11-11 3:22 ` bugzilla-daemon
2013-11-11 9:53 ` bugzilla-daemon
2013-11-12 10:05 ` bugzilla-daemon
2013-11-12 11:09 ` bugzilla-daemon
2013-11-12 14:26 ` bugzilla-daemon
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