[Gluster-users] Bonded Gigabit

Liam Slusser lslusser at gmail.com
Tue Jan 5 17:40:41 UTC 2010

I use balance mode0 on my gluster servers - but it doesnt exactly work
as you would expect it too.  We run Cisco 4948g switches (48 port
gigabit) and our gluster servers have two gigabit links bounded
together using mode0.  Balance mode0 does a great job of balancing
outbound traffic however the Cisco's always routes each single INBOUND
tcp connection traffic down a single trunk.  So the only way to really
gain an advantage is to use multiple tcp connections between the many
hosts - or in the case of gluster using multiple bricks per server
striped together.


On Tue, Jan 5, 2010 at 7:20 AM, Adrian Revill
<adrian.revill at shazamteam.com> wrote:
> Hi
> I am looking at which is the best bonding mode for giagbit links for the
> servers. I have a choice of using the 802.3ad (mode4) or bonding-rr (mode0)
> I would prefer to use mode4 but this will only give a single TCP connection
> 1Gbit of bandwidth, where mode0 will give multi Gbit of band width to a
> single TCP connection.
> My question is, If i have 4 mirrored servers. when a AFR replicates data
> between servers, does it run multiple TCP connections concurrently to copy
> the data to all 4 servers at once, or does it do each server in turn.
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