Two things off the top of my head after skimming the given details: 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: https://access.redhat.com/solutions/131153 and also be sure to follow this: 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 2. You haven't mentioned anything about jumbo frames, are you using those? If not, it is a very good idea to start.
And 3: since this is RHEV, you might get much more help from the official support than from this list. Hope this helps Dan On Fri, Jun 24, 2016 at 9:12 PM, Colin Coe <[email protected]> wrote: > Hi all > > 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. > > 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. > > 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: > - eno1 and eno2 are bond0 which is the rhevm interface > - eno3 and eno4 are bond1 and all the VM VLANs are trunked over this bond > using 802.1q > - eno5 and eno6 are bond2 and dedicated to iSCSI traffic > > Is this the "correct" way to do this? If not, what should I be doing > instead? > > Thanks > > CC > > _______________________________________________ > Users mailing list > [email protected] > http://lists.ovirt.org/mailman/listinfo/users > >
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