[Aoetools-discuss] Retransmit issues

[Tracy R. <tr...@ul...>]

I currently have two AoE SANs deployed and they both have the same
problem. So I must be missing something somewhere. I originally wrote
about this last November:

http://www.mail-archive.com/aoe...@li.../msg00136.html

And never got the problem solved. I also did not get around to trying
the patch Ed suggested. But I have a feeling there has got to be
something I am doing wrong in the setup here. Performance didn't
really matter much on that deployment at the time although it is
becoming more important and I have just set up a second SAN with the
same issue where I really do need it to perform. I have set up AoE
SANs a few times before and got great performance. I'm not sure what
could possibly be different this time.

vblade-19 on the target side AoE v72 kernel module on the
initiator. Using mtu 9000 on all of the interfaces involved. HP
ProCurve 2810 switch with a dedicated VLAN for the AoE SAN. The switch
is set up for 9000 MTU also. The initiator says:

aoe: e0.0: setting 8704 byte data frames
aoe: e1.0: setting 8704 byte data frames

so I know it is getting the MTU right on that side. The initiator has
a vlan interface for the SAN which then goes over the bonded link.

cat /dev/etherd/err on the initiator produces lots of:

 unexpected rsp e2.0    tag=7e426f7f@102e56f91 s=0024e860c18a
 d=00219b916485
     retransmit e2.0 oldtag=00736fa5@102e56faa newtag=00826faa
 s=00219b916485 d=0024e860c18a nout=1
 unexpected rsp e2.0    tag=00736fa5@102e56fad s=0024e860c18a
 d=00219b916485
     retransmit e2.0 oldtag=083b7005@102e5700e newtag=083c700e
 s=00219b916485 d=0024e860c18a nout=1
 unexpected rsp e2.0    tag=083b7005@102e57016 s=0024e860c18a
 d=00219b916485
     retransmit e2.0 oldtag=123d7082@102e5708b newtag=1245708b
 s=00219b916485 d=0024e860c18a nout=1
 unexpected rsp e2.0    tag=123d7082@102e57095 s=0024e860c18a
 d=00219b916485
     retransmit e2.0 oldtag=173870c9@102e570d6 newtag=174170d6
 s=00219b916485 d=0024e860c18a nout=1
 unexpected rsp e2.0    tag=173870c9@102e570dc s=0024e860c18a
 d=00219b916485
     retransmit e2.0 oldtag=20c87147@102e57153 newtag=20cf7153
 s=00219b916485 d=0024e860c18a nout=1
 unexpected rsp e2.0    tag=20c87147@102e5715b s=0024e860c18a
 d=00219b916485
     retransmit e2.0 oldtag=2aae71ca@102e571d0 newtag=2ab471d0
 s=00219b916485 d=0024e860c18a nout=1

At this point I'm at a loss for what the problem could be.

-- 
Tracy Reed
http://tracyreed.org