HP StorageWorks EVA iSCSI Connectivity Option 5.0 release notes (5697-6714, August 2007)

Workaround

Follow the correct iqn name syntax as described in section 3.2.6 of RFC 3720.

For Windows—In the initiator GUI, click Reset under Change in the General tab to reset the iqn name to

its original

name that was created when you installed the initiator.

For Linux—Ed

it the InitiatorName setting in the initiatorname.iscsi ﬁle using the correct syntax.

For Linux and Windows—Reinstalling the initiator creates a valid iqn name.

iSCSI initiator LUNs disappear after changing the initiator iqn name

The mpx100 maintains a database of targets, initiators and LUNs and the corresponding links bet ween

them. Whenever Command View presents or removes a LUN from an iSCSI initiator, it updates the

mpx100’s da tabase. When a new iqn name logs into the mpx100, it is considered a new initiator and

no LUNs are assigned to it. All LUN assignments to the old iqn are still maintained.

Workaround

Using Command View EVA, unpresent the LUN from the old initiator iqn and then present it to the

new initiator iqn name. Remove the old initiator from the mpx100 database with either the mpx100

Manager GU

IortheCLI.

Windows iSCSI initiators must add Tcp1323Opts to registry

Timestamps help TCP measure round trip time (RTT) accurately to adjust retransmission timeouts. The

Timestamps option provides two timestamp ﬁelds of 4 bytes each in the TCP header: one to record the

time the initial transmission is sent, a nd one to record the time on the remote host.

To enable timestamps, the Tcp1323Opts entrymustbesettoREG_DWORD = 2 under

HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters.

Installing the Windows iSCSI initiator from the HP StorageWorks iSCSI Connectivity O ption for Enterprise

Virtual Array Windows software k it automatically adds this registry setting.

Workaround

Make the change to the registry, or cut and paste the following lines to a text ﬁle named

tcp1323

opts.reg.

tcp1323opts.reg.

REGEDIT

[HKEY_LOCAL_MACHINE\SYSTEM\Current-

ControlSet\Services\Tcpip\Parameters]

"Tcp1323

Opts"=dword:00000002

Double-c

lick the ﬁle to add changes to the registry for the iSCSI initiator.

CAUTION:

Using the Registry Editor incorrectly can cause serious problems that can require reinstallation of the

operatingsystem. Backuptheregistrybeforemakinganychanges. UsetheRegistryEditoratyour

own risk.

EVA iSCSI Connectivity Option 5.0