Craig, Pieter gave you the information on how to bond multiple OSA adapters together. He did not cover the user direct entries. You will need some dedicate statements in your directory. Lets say that your Linux guest is looking for the vswitch at 0.0.0600 0.0.0601 0.0.0602, and your OSA subchannels that you can use are at 0.0.0c00, 0.0.c01, and 0.0.c02, then your dedicate statements would look like this:
DEDICATE 600 c00 DEDICATE 601 c01 DEDICATE 602 c02 Pieter's example below has 4 OSA adapters bonded together, so you would need 3 more sets of dedicate statements. Remember when dedicating OSA adapters for zLinux guests, that each set of subchannels can only be used once in an LPAR. You can have a Linux LPAR that uses c00, c01, and c02. You have have two LPARs that use c00, c01, and c02. You cannot have two Linux guests use c00, c01, c02. Assuming the folks that did your I/O configuration (and you have the right hardware) allow it, you can have one guest use c00, c01, and c02, and another guest use c03, c04, c05. (I don't know if bonding will prevent this.) The other thing to look at is MTU size. If you are wanting to move a lot of data, you want to be using jumbo frames. (Whether you are using vswitches or dedicated OSAs.) The other wild card is z/VM 6.1. According to Reed Mullen's SHARE presentation, is that it contains changes to enhance z/VM's virtual networking. I don't know by how much. At SHARE, Bill Bitner said that z/VM 6.1 was not ready to be talked about. Ron ________________________________________ From: Linux on 390 Port [linux-...@vm.marist.edu] On Behalf Of Harder, Pieter [pieter.har...@brabantwater.nl] Sent: Monday, October 26, 2009 3:44 PM To: LINUX-390@VM.MARIST.EDU Subject: FW: OSA-Express3 10 Gb, Vswitch, and SLES10 Linux Throughput Might be of public interest... Hi Craig, Using SLES10 SP2 in /etc/sysconfig/hardware/hwcfg-qeth-bus-ccw-0.0.0c00: STARTMODE="auto" MODULE="qeth" MODULE_OPTIONS="" MODULE_UNLOAD="yes" SCRIPTUP="hwup-ccw" SCRIPTUP_ccw="hwup-ccw" SCRIPTUP_ccwgroup="hwup-qeth" SCRIPTDOWN="hwdown-ccw" CCW_CHAN_IDS="0.0.0c00 0.0.0c01 0.0.0c02" CCW_CHAN_NUM="3" CCW_CHAN_MODE="0" QETH_LAYER2_SUPPORT="1" QETH_OPTIONS="buffer_count=128" Three more of those, 1c00/02, 2c00/02, 3c00/02 In /etc/sysconfig/network/ifcfg-qeth-bus-ccw-0.0.0c00: BOOTPROTO="static" STARTMODE="onboot" LLADDR=02:00:00:02:03:96 IPADDR="" SLAVE='yes' MASTER='bond0' MTU='8992' _nm_name='qeth-bus-ccw-0.0.0c00' Three more of those, you get the picture. In /etc/sysconfig/network/ifcfg-bond0: BOOTPROTO="static" STARTMODE="onboot" IPADDR="10.2.3.150" NETMASK="255.255.255.0" NETWORK="10.2.3.0" BROADCAST="10.2.3.255" MTU='8992' BONDING_MASTER='yes' BONDING_MODULE_OPTS='mode=802.3ad miimon=500 xmit_hash_policy=layer2' BONDING_SLAVE0='qeth-bus-ccw-0.0.0c00' BONDING_SLAVE1='qeth-bus-ccw-0.0.1c00' BONDING_SLAVE2='qeth-bus-ccw-0.0.2c00' BONDING_SLAVE3='qeth-bus-ccw-0.0.3c00' And that is basically it. Best regards, Pieter Harder pieter.har...@brabantwater.nl<mailto:pieter.har...@brabantwater.nl> tel +31-73-6837133 / +31-6-47272537 Van: Craig Collins [mailto:grizl...@gmail.com] Verzonden: maandag 26 oktober 2009 20:58 Aan: Harder, Pieter Onderwerp: OSA-Express3 10 Gb, Vswitch, and SLES10 Linux Throughput Hi Pieter, Thanks for your response. We've never tried connecting them directly to a guest. So we're working on finding the network config parameters we need to use on the linux guest to connect the OSA devices and get the vlanid set correctly. If you have any hints or config parameters that you would be willing to share or manuals we should look into, please send them along. Hopefully tomorrow we will take a shot at this. Craig Collins State ow WI, DOA, DET Brabant Water N.V. Postbus 1068 5200 BC 's-Hertogenbosch http://www.brabantwater.nl Handelsregister: 16005077 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
