Displaying information for iSCSI sessions

Types of session information

You can display all of the information about iSCSI sessions using the iswta session show -v command, or you can use the -t or -p option to specify which type of information you want to display.

TCP connections
iSCSI session parameters

Displaying TCP connection information

To display TCP connection information, complete the following step.

Step	Action
1	Enter the following command: iscsi session show -t iswta Result The following information is displayed: Session Initiator Sessions connected on adapter iswta: Session 1 Initiator Information Initiator Name: iqn.1992-08.com.initvendor1:host1 ISID: 00:00:00:00:00:00 TCP Connection Information Remote Endpoint: 10.60.155.58:32771 Local Endpoint: 10.60.155.31:3260 Local Interface: e5

Step

Action

Enter the following command:

iscsi session show -t iswta

Result

The following information is displayed:

Session Initiator

Sessions connected on adapter iswta:

Session 1

  Initiator Information

    Initiator Name: iqn.1992-08.com.initvendor1:host1

    ISID: 00:00:00:00:00:00

  TCP Connection Information

    Remote Endpoint: 10.60.155.58:32771

    Local Endpoint: 10.60.155.31:3260

    Local Interface: e5

Displaying iSCSI session parameters

Display session parameters is a convenient way to confirm whether parameters are turned on or off. For example, keys such as HeaderDigest and DataDigest can dramatically affect performance. Rather than taking a network trace of the login request, you can display the current session parameters and confirm that they are turned off. To display iSCSI session parameters, complete the following step.

Step	Action
1	To view the current session on the istwa driver, enter the following command: iscsi session show -p iswta Result The following information is displayed: Session Initiator Sessions connected on adapter iswta: Session 1 Initiator Information Initiator Name: iqn.1992-08.com.netapp.host1 ISID: 00:00:00:00:00:00 Session Parameters InitiatorName=iqn.1992-08.com.netapp.host1 InitiatorAlias= SessionType=Normal ImmediateData=Yes InitialR2T=Yes MaxOutstandingR2T=1 HeaderDigest=None DataDigest=None MaxRecvDataSegmentLength=16384 (Initiator) MaxRecvDataSegmentLength=65536 (Target) FirstBurstLength=65536 MaxBurstLength=65536 MaxConnections=1 ErrorRecoveryLevel=0 DefaultTime2Wait=2 DefaultTime2Retain=20 DataPDUInOrder=Yes DataSequenceInOrder=Yes

Step

Action

To view the current session on the istwa driver, enter the following command:

iscsi session show -p iswta

Result

The following information is displayed:

Session Initiator

Sessions connected on adapter iswta:

Session 1

  Initiator Information

    Initiator Name: iqn.1992-08.com.netapp.host1

    ISID: 00:00:00:00:00:00

  Session Parameters

    InitiatorName=iqn.1992-08.com.netapp.host1

    InitiatorAlias=

    SessionType=Normal

    ImmediateData=Yes

    InitialR2T=Yes

    MaxOutstandingR2T=1

    HeaderDigest=None

    DataDigest=None

    MaxRecvDataSegmentLength=16384 (Initiator)

    MaxRecvDataSegmentLength=65536 (Target)

    FirstBurstLength=65536

    MaxBurstLength=65536

    MaxConnections=1

    ErrorRecoveryLevel=0

    DefaultTime2Wait=2

    DefaultTime2Retain=20

    DataPDUInOrder=Yes

    DataSequenceInOrder=Yes