Il 04/02/2016 16.55, Dan Kenigsberg ha scritto:
On Wed, Jan 06, 2016 at 08:45:16AM +0200, Dan Kenigsberg wrote:
On Mon, Jan 04, 2016 at 01:54:37PM +0200, Dan Kenigsberg wrote:
On Mon, Jan 04, 2016 at 12:31:38PM +0100, Stefano Danzi wrote:
I did some tests:

kernel-3.10.0-327.3.1.el7.x86_64 -> bond mode 4 doesn't work (if I detach
one network cable the network is stable)
kernel-3.10.0-229.20.1.el7.x86_64 -> bond mode 4 works fine
Would you be kind to file a kernel bug in bugzilla.redhat.com?
Summarize the information from this thread (e.g. your ifcfgs and in what
way does mode 4 doesn't work).

To get the bug solved quickly we'd better find paying RHEL7 customer
subscribing to it. But I'll try to push from my direction.
Stefano has been kind to open

     Bug 1295423 - Unstable network link using bond mode = 4
     https://bugzilla.redhat.com/show_bug.cgi?id=1295423

which we fail to reproduce on our own lab. I'd be pleased if anybody who
experiences it, and their networking config to the bug (if it is
different). Can you also lay out your switch's hardware and
configuration?
Stefano, could you share your /proc/net/bonding/* files with us?
I heard about similar reports were the bond slaves had mismatching
aggregator id. Could it be your case as well?


Here:

[root@ovirt01 ~]# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

Bonding Mode: IEEE 802.3ad Dynamic link aggregation
Transmit Hash Policy: layer2 (0)
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0

802.3ad info
LACP rate: slow
Min links: 0
Aggregator selection policy (ad_select): stable
Active Aggregator Info:
        Aggregator ID: 2
        Number of ports: 1
        Actor Key: 9
        Partner Key: 1
        Partner Mac Address: 00:00:00:00:00:00

Slave Interface: enp4s0
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 2
Permanent HW addr: **:**:**:**:**:f1
Slave queue ID: 0
Aggregator ID: 1
Actor Churn State: churned
Partner Churn State: churned
Actor Churned Count: 4
Partner Churned Count: 5
details actor lacp pdu:
    system priority: 65535
    port key: 9
    port priority: 255
    port number: 1
    port state: 69
details partner lacp pdu:
    system priority: 65535
    oper key: 1
    port priority: 255
    port number: 1
    port state: 1

Slave Interface: enp5s0
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: **:**:**:**:**:f2
Slave queue ID: 0
Aggregator ID: 2
Actor Churn State: churned
Partner Churn State: churned
Actor Churned Count: 1
Partner Churned Count: 2
details actor lacp pdu:
    system priority: 65535
    port key: 9
    port priority: 255
    port number: 2
    port state: 77
details partner lacp pdu:
    system priority: 65535
    oper key: 1
    port priority: 255
    port number: 1
    port state: 1



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