[ovs-discuss] Error attaching device to DPDK

Bodireddy, Bhanuprakash bhanuprakash.bodireddy at intel.com
Tue Mar 28 08:46:25 UTC 2017


Hello shivaram,

Darrell has already asked if VT-d is enabled?
Your cmdline options are appropriate as you have iommu enabled(intel_iommu=on iommu=pt).
can you also check the output of below mentioned command to see if VT-d is enabled in BIOS?

$ dmesg | grep -e DMAR -e IOMMU

Regards,
Bhanuprakash.

From: ovs-discuss-bounces at openvswitch.org [mailto:ovs-discuss-bounces at openvswitch.org] On Behalf Of Shivaram Mysore
Sent: Tuesday, March 28, 2017 6:25 AM
To: Darrell Ball <dball at vmware.com>
Cc: ovs-discuss at openvswitch.org
Subject: Re: [ovs-discuss] Error attaching device to DPDK

# uname -r
4.10.0-14-generic

# cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-4.10.0-14-generic root=/dev/mapper/intelsdn--vg-root ro quiet intel_iommu=on iommu=pt default_hugepagesz=1G hugepagesz=1G hugepages=4

# uname -a
Linux intelsdn 4.10.0-14-generic #16-Ubuntu SMP Fri Mar 17 15:19:26 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

# cat /etc/*release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=17.04
DISTRIB_CODENAME=zesty
DISTRIB_DESCRIPTION="Ubuntu Zesty Zapus (development branch)"
NAME="Ubuntu"
VERSION="17.04 (Zesty Zapus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu Zesty Zapus (development branch)"
VERSION_ID="17.04"


Nothing in the syslog related

On Mon, Mar 27, 2017 at 10:02 PM, Darrell Ball <dball at vmware.com<mailto:dball at vmware.com>> wrote:
I see the pastebins now.

What kernel version are you using ?
VT-d enabled ?
Anything related in syslog ?

From: Shivaram Mysore <shivaram.mysore at gmail.com<mailto:shivaram.mysore at gmail.com>>
Date: Monday, March 27, 2017 at 9:34 PM
To: Darrell Ball <dball at vmware.com<mailto:dball at vmware.com>>
Cc: "ovs-discuss at openvswitch.org<mailto:ovs-discuss at openvswitch.org>" <ovs-discuss at openvswitch.org<mailto:ovs-discuss at openvswitch.org>>
Subject: Re: [ovs-discuss] Error attaching device to DPDK

One more datapoint, please check the paste bin log in URL sent earlier.  Dpdk-devbind works and you can see results in the paste bin log

/Shivaram
::Sent from my mobile device::

On Mar 27, 2017, at 8:34 PM, Darrell Ball <dball at vmware.com<mailto:dball at vmware.com>> wrote:
see inline below

But a few questions:

1)      Are you using the recommended version of dpdk with OVS 2.7 – 16.11 ?

2)      Are you getting a crash still or is this post crash ?

3)      Was the previous crash still happening with 16.11 or only 17.02 ?

Thanks
Darrell

From: <ovs-discuss-bounces at openvswitch.org<mailto:ovs-discuss-bounces at openvswitch.org>> on behalf of Shivaram Mysore <shivaram.mysore at gmail.com<mailto:shivaram.mysore at gmail.com>>
Date: Monday, March 27, 2017 at 7:45 PM
To: "ovs-discuss at openvswitch.org<mailto:ovs-discuss at openvswitch.org>" <ovs-discuss at openvswitch.org<mailto:ovs-discuss at openvswitch.org>>
Subject: [ovs-discuss] Error attaching device to DPDK

Hello,

I have installed OVS 2.7 running.  When I do:
1.      # ovs-vsctl add-port ovs-ip64-br0 dpdk-p0 -- set Interface dpdk-p0 type=dpdk options:dpdk-devargs=0000:82:00.0
2.      ovs-vsctl: Error detected while setting up 'dpdk-p0': Error attaching device '0000:82:00.0' to DPDK.  See ovs-vswitchd log for details.

Possibly, the port is not bound.
Check using
$DPDK_DIR/tools/dpdk-devbind.py –status
and see the documentation for more detail

and the log file shows:
1.      2017-03-28T02:04:40.004Z|00064|netdev_dpdk|WARN|Error attaching device '0000:82:00.0' to DPDK
2.      2017-03-28T02:04:40.004Z|00065|netdev|WARN|dpdk-p0: could not set configuration (Invalid argument)

What would cause such a situation?

Commands run: https://pastebin.com/0P754x0t<https://urldefense.proofpoint.com/v2/url?u=https-3A__pastebin.com_0P754x0t&d=DwMFaQ&c=uilaK90D4TOVoH58JNXRgQ&r=BVhFA09CGX7JQ5Ih-uZnsw&m=spZCZ7BnBbu-PD803qcYLxegZkc9PwBLFH3QQ1XxWu0&s=uYWBSaIFlY3aKKwC7PAszDPMtB9xS3zjpwJo8afntY8&e=>
Detailed OVS Log: https://pastebin.com/ctBhLuRG<https://urldefense.proofpoint.com/v2/url?u=https-3A__pastebin.com_ctBhLuRG&d=DwMFaQ&c=uilaK90D4TOVoH58JNXRgQ&r=BVhFA09CGX7JQ5Ih-uZnsw&m=spZCZ7BnBbu-PD803qcYLxegZkc9PwBLFH3QQ1XxWu0&s=PC90IYBZb113gFPdzbbIa2gBRr3H8VIpr9ow0jhi-pk&e=>

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