iSCSI-R3 MPIO Setup?

[philiphong]

To-M

I think this slow performance kills my server. I tried given parameters.
Still I have slow performance and during the heavy I/O, vmware server timed out and my host OS cannot communicate to VMware. (when MPIO was off) When MPIO was on, entire host OS goes to read-only mode.

-Philip

[To-L]

What are your initiator settings?
Have you tried the MS initiator.
Are you in block or file I/O?

[symm]

Can you check your cpu load in statistics.
What OS are the virtual server you are creating?

[To-M]

And what is the server specs. We need more information to assist you.

[philiphong]

Server is

IBM LS20 with 8GB RAM
2 NIC connected to Cisco SW.
2 port Qlogic iSCSI HBA for IBM Blade ==> connected to Nortel SW ==> Open-E iSCSI R3

Qlogic Settings:
*** Displaying ISCSI Settings inst=0 ***
Force_Negotiate_Main_iSCSI_Keys : off(*)
iSCSI_Send_Markers : off(*)
iSCSI_Header_Digests : off
iSCSI_Data_Digests : off
iSCSI_Immediate_Data : on
iSCSI_Initial_R2T : off
iSCSI_Data_Seq_In_Order : on(*)
iSCSI_Data_PDU_In_Order : on(*)
iSCSI_CHAP_Auth : off(*)
iSCSI_Bidi_CHAP_Auth : off(*)
iSCSI_Snack : off
iSCSI_Discovery_Logout : on
iSCSI_Strict_Login : off
iSCSI_Error_Recovery_Level : 0(*)
iSCSI_Alias :
*** Displaying Firmware Settings inst=0 ***
FW_Marker : off(*)
FW_Stat_Alarm : off(*)
FW_Accept_AEN : off(*)
FW_Access_Control : off(*)
FW_Session_Mode : on(*)
FW_Initiator_Mode : on(*)
FW_Target_Mode : off(*)
FW_Fast_Posting : off(*)
FW_Sense_Buffer_Desc : off(*)
FW_ZIO_Enable_Mode : off
AFW_Device_Timeouts : off
AFW_Delayed_Ack : on
AFW_AutoConnect : on
*** Displaying Device Settings inst=0 ***
Large_Frames : off
DevType : 0(*)
ExeThrottle : 64
FirstBurstLen : 256
KeepAliveTO : 30
DefaultTime2Retain : 20(*)
DefaultTime2Wait : 2(*)
MaxBurstLen : 512
MaxOutstandingR2T : 8
MaxRxDataSegmentLen : 128(*)
Port : 3260(*)
IPv4TOS : 0
IPv4TTL : 64
*** Displaying Basic Settings inst=0 ***
iSCSI_Discovery_Logout : on
iSCSI_Strict_Login : off
TCP_DHCP : off
TCP_DNS_Via_DHCP : off
TCP_Nagle : on
iSCSI_Alias :
IP_Address : 192.168.2.11
IP_Subnet_Mask : 255.255.255.0
IP_Gateway : 0.0.0.0
Secondary_DNS : (*)
Secondary_IP_Address : (*)
Task_Management_Timeout : 10
ENABLE_IPV4 : on
ENABLE_IPV6 : off
LOC_LINK_AUTO : off
ROUTABLE_AUTO : off
LDROUTER_AUTO : off
ENABLE_4022IPV4 : on
*** Displaying Advanced Settings inst=0 ***
FW_Marker : off(*)
FW_Stat_Alarm : off(*)
FW_Accept_AEN : off(*)
FW_Access_Control : off(*)
FW_Session_Mode : on(*)
FW_Initiator_Mode : on(*)
FW_Target_Mode : off(*)
FW_Fast_Posting : off(*)
FW_Sense_Buffer_Desc : off(*)
FW_ZIO_Enable_Mode : off
AFW_Device_Timeouts : off
AFW_Delayed_Ack : on
AFW_AutoConnect : on
DevType : 0(*)
ExeThrottle : 64
FirstBurstLen : 128
IP_Fragmentation : on(*)
IP_ARP_Redirect : off
VLAN_Enable : off
VLAN_User_Priority : 0
VLAN_ID : 0
IPv4_TOS_ENABLE : off
Force_Negotiate_Main_iSCSI_Keys : off(*)
iSCSI_Send_Markers : off(*)
iSCSI_Header_Digests : off
iSCSI_Data_Digests : off
iSCSI_Immediate_Data : on
iSCSI_Initial_R2T : off
iSCSI_Data_Seq_In_Order : on(*)
iSCSI_Data_PDU_In_Order : on(*)
iSCSI_CHAP_Auth : off(*)
iSCSI_Bidi_CHAP_Auth : off(*)
iSCSI_Error_Recovery_Level : 0(*)
KeepAliveTO : 30
DefaultTime2Retain : 20(*)
DefaultTime2Wait : 2(*)
MaxBurstLen : 512
MaxOutstandingR2T : 8
MaxRxDataSegmentLen : 128(*)
Port : 3260(*)
TCP_Timer_Scale : 3(*)
TCP_Time_Stamp : on
TCP_Window_Scale : 0
iSCSI_Name : iqn.2004-04.com.qlogic:qmc4052.zj1ksw61o07d.1
ZIO : 0
IPv4TOS : 0
IPv4TTL : 64
ACB_Version : 2(*)
Large_Frames : off
*** Displaying Remaining parameters inst=0 ***
ACB_Supported : on(*)
Values noted with (*) are read only.

[philiphong]

Also, host OS is CentOS 5.2 64-bit.