9–iSER Configuration
Configuring iSER on ESXi 6.7
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BC0154501-00 P
Configuring IRQ Affinity Settings
The following example sets CPU core 0, 1, 2, and 3 to interrupt request (IRQ) XX,
YY, ZZ, and XYZ respectively. Perform these steps for each IRQ assigned to a
port (default is eight queues per port).
systemctl disable irqbalance
systemctl stop irqbalance
cat /proc/interrupts | grep qedr
Shows IRQ assigned to each port queue
echo 1 > /proc/irq/XX/smp_affinity_list
echo 2 > /proc/irq/YY/smp_affinity_list
echo 4 > /proc/irq/ZZ/smp_affinity_list
echo 8 > /proc/irq/XYZ/smp_affinity_list
Configuring Block Device Staging
Set the block device staging settings for each iSCSI device or target as follows:
echo noop > /sys/block/sdd/queue/scheduler
echo 2 > /sys/block/sdd/queue/nomerges
echo 0 > /sys/block/sdd/queue/add_random
echo 1 > /sys/block/sdd/queue/rq_affinity
Configuring iSER on ESXi 6.7
This section provides information for configuring iSER for VMware ESXi 6.7.
Before You Begin
Before you configure iSER for ESXi 6.7, ensure that the following is complete:
The CNA package with NIC and RoCE drivers is installed on the ESXi 6.7
system and the devices are listed. To view RDMA devices, issue the
following command:
esxcli rdma device list
Name Driver State MTU Speed Paired Uplink Description
------- ------- ------ ---- ------- ------------- --------------------------------------
vmrdma0 qedrntv Active 1024 40 Gbps vmnic4 QLogic FastLinQ QL45xxx RDMA Interface
vmrdma1 qedrntv Active 1024 40 Gbps vmnic5 QLogic FastLinQ QL45xxx RDMA Interface
[root@localhost:~] esxcfg-vmknic -l
Interface Port Group/DVPort/Opaque Network IP Family IP Address
Netmask Broadcast MAC Address MTU TSO MSS Enabled Type
NetStack
vmk0 Management Network IPv4 172.28.12.94
255.255.240.0 172.28.15.255 e0:db:55:0c:5f:94 1500 65535 true DHCP
defaultTcpipStack
