Was not sure where this would go so I am asking here. Mods, please feel free to move to the proper forum if not correct.
I have a Dell T710 running Centos 5.5 with Xen dom0 that I am connecting to my Dell MD3200i iSCSI SAN. I have all 4 network cards in a mode4 bond with vlans passing over the bond. I have connected to my SAN succesfully but when I try to tansfer anything I get really low throughput speed, like 8MB to 10MB/sec. I figured with the 4 gig ports bonded I would at least get 1gb/sec (meaning around 120MB/sec). I am trying to move a logical volume from the phyiscal server to the SAN and it is 6TB so I need it to move as fast as possible. Below I have attached a section of my if-scripts from /etc/sysconfig/network-scripts/. To explain some the switch that the machine is plugged into does not support jumbo frames hence the need for the lower than 1500 MTU settings. We have vlan 1 is untagged but vlan2 through vlan20 is tagged. Vlan20 is the SAN network. I have it setup with multipath according to dell's documentation they sent. Is there any tweaking I can do to get better performance? Also when I do transfer anything over to the SAN I keep getting multipath errors and failures.
ifcfg-bond0
Code:
DEVICE=bond0
ONBOOT=yes
BOOTPROTO=none
USERCTL=no
BROADCAST=10.8.1.255
IPADDR=10.8.1.150
NETMASK=255.255.255.0
NETWORK=10.8.1.0
GATEWAY=10.8.1.1
MTU=1496
ifcfg-bond0.2
Code:
DEVICE=bond0.2
VLAN=yes
BRIDGE=br2
BOOTPROTO=none
ONBOOT=yes
TYPE=Ethernet
ifcfg-br2
Code:
DEVICE=br2
TYPE=Bridge
BOOTPROTO=static
ONBOOT=yes
ifcfg-eth0
Code:
# Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet
DEVICE=eth0
BOOTPROTO=none
ONBOOT=yes
USECTL=no
MASTER=bond0
SLAVE=yes
MTU=1496
ifcfg-br20
Code:
DEVICE=br20
TYPE=Bridge
BOOTPROTO=static
ONBOOT=yes
ifcfg-br20:1
Code:
DEVICE=br20:1
#TYPE=Bridge
BOOTPROTO=static
IPADDR=192.168.130.54
NETMASK=255.255.255.0
NETWORK=192.168.130.0
ONBOOT=yes
MTU=1492
ifcfg-br20:2
Code:
DEVICE=br20:2
#TYPE=Bridge
BOOTPROTO=static
IPADDR=192.168.131.54
NETMASK=255.255.255.0
NETWORK=192.168.131.0
ONBOOT=yes
MTU=1492
ifcfg-br20:3
Code:
DEVICE=br20:3
#TYPE=Bridge
BOOTPROTO=static
IPADDR=192.168.132.54
NETMASK=255.255.255.0
NETWORK=192.168.132.0
ONBOOT=yes
MTU=1492
ifcfg-br20:4
Code:
DEVICE=br20:4
#TYPE=Bridge
BOOTPROTO=static
IPADDR=192.168.133.54
NETMASK=255.255.255.0
NETWORK=192.168.133.0
ONBOOT=yes
MTU=1492
Code:
[root@xen network-scripts]# ls
ifcfg-bond0 ifcfg-bond0.15 ifcfg-bond0.7 ifcfg-br13 ifcfg-br20:3 ifcfg-br8 ifdown ifdown-post ifup-aliases ifup-ipx ifup-sit network-functions-ipv6
ifcfg-bond0.1 ifcfg-bond0.2 ifcfg-bond0.8 ifcfg-br14 ifcfg-br20:4 ifcfg-br9 ifdown-bnep ifdown-ppp ifup-bnep ifup-isdn ifup-sl
ifcfg-bond0.10 ifcfg-bond0.20 ifcfg-bond0.9 ifcfg-br15 ifcfg-br3 ifcfg-eth0 ifdown-eth ifdown-routes ifup-eth ifup-plip ifup-tunnel
ifcfg-bond0.11 ifcfg-bond0.3 ifcfg-br1 ifcfg-br2 ifcfg-br4 ifcfg-eth1 ifdown-ippp ifdown-sit ifup-ib ifup-plusb ifup-wireless
ifcfg-bond0.12 ifcfg-bond0.4 ifcfg-br10 ifcfg-br20 ifcfg-br5 ifcfg-eth2 ifdown-ipsec ifdown-sl ifup-ippp ifup-post init.ipv6-global
ifcfg-bond0.13 ifcfg-bond0.5 ifcfg-br11 ifcfg-br20:1 ifcfg-br6 ifcfg-eth3 ifdown-ipv6 ifdown-tunnel ifup-ipsec ifup-ppp net.hotplug
ifcfg-bond0.14 ifcfg-bond0.6 ifcfg-br12 ifcfg-br20:2 ifcfg-br7 ifcfg-lo ifdown-isdn ifup ifup-ipv6 ifup-routes network-functions
[root@xen network-scripts]#
Thanks in advance for any and all pointers.
