<div dir="ltr">Two things off the top of my head after skimming the given details:<div>1. iSCSI will work better without the bond. It already uses multipath, so all you need is to separate the portal IPs/subnets and provide separate IPs/subnets to the iSCSI dedicated NICs, as is the recommended way here: <a href="https://access.redhat.com/solutions/131153">https://access.redhat.com/solutions/131153</a> and also be sure to follow this: <a href="https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.6/html/Administration_Guide/sect-Preparing_and_Adding_Block_Storage.html#Configuring_iSCSI_Multipathing">https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.6/html/Administration_Guide/sect-Preparing_and_Adding_Block_Storage.html#Configuring_iSCSI_Multipathing</a></div><div>2. You haven't mentioned anything about jumbo frames, are you using those? If not, it is a very good idea to start.</div><div><br></div><div>And 3: since this is RHEV, you might get much more help from the official support than from this list.</div><div><br></div><div>Hope this helps</div><div>Dan</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jun 24, 2016 at 9:12 PM, Colin Coe <span dir="ltr"><<a href="mailto:colin.coe@gmail.com" target="_blank">colin.coe@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi all<div><br></div><div>We run four RHEV datacenters, two PROD, one DEV and one TEST/Training. They are all working OK but I'd like a definitive answer on how I should be configuring the networking side as I'm pretty sure we're getting sub-optimal networking performance.</div><div><br></div><div>All datacenters are housed in HP C7000 Blade enclosures. The PROD datacenters use HP 4730 iSCSI SAN clusters, each datacenter has a cluster of two 4730s. These are configured RAID5 internally with NRAID1. The DEV and TEST datacenters are using P4500 iSCSI SANs and each datacenter has a cluster of three P4500s configured with RAID10 internally and NRAID5.</div><div><br></div><div>The HP C7000 each have two Flex10/10D interconnect modules configured in a redundant ring so that we can upgrade the interconnects without dropping network connectivity to the infrastructure. We use fat RHEL-H 7.2 hypervisors (HP BL460) and these are all configured with six network interfaces:</div><div>- eno1 and eno2 are bond0 which is the rhevm interface</div><div>- eno3 and eno4 are bond1 and all the VM VLANs are trunked over this bond using 802.1q</div><div>- eno5 and eno6 are bond2 and dedicated to iSCSI traffic</div><div><br></div><div>Is this the "correct" way to do this? If not, what should I be doing instead?</div><div><br></div><div>Thanks</div><span class="HOEnZb"><font color="#888888"><div><br></div><div>CC</div></font></span></div>
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