Performance Tuning - Chelsio Communications Chelsio T5 Installation And User Manual

Chapter VII. iSCSI PDU Offload Target
iscsi_offload_mode has no meaning when the iSCSI software is used on a non-
Note
TOE based NIC.keyfile from Chelsio support.
4.11.2. iscsi_auth_order
Options: "ACL" or "CHAP", defaults to "CHAP"
On an iSCSI target when
perform CHAP first then ACL or perform ACL then CHAP.
ACL: When setting
start of the login phase for an iSCSI normal session: upon receiving the first
iscsi_login_request, the target will check its ACL. If this iSCSI connection does not match
any ACL provisioned, the login attempt will be terminated.
CHAP: When setting
the end of the login phase for an iSCSI normal session: before going to the full feature
phase, the target will check its ACL. If this iSCSI connection does not match any ACL
provisioned, the login attempt will be terminated.
iscsi_auth_order has no meaning when
Note
4.11.3. iscsi_target_vendor_id
Options: A string of maximum of 8 characters, defaults to
The iscsi_target_vendor_id
response of a SCSI Inquiry request.
4.12.

Performance tuning

In order to maximize your system's performance, Chelsio recommends installing the tools
which will copy t4_perftune.sh
technology, VT-d, Intel I/O AT and SR-IOV in the BIOS settings and then run the following
command:
[root@host]# t4_perftune.sh
Next, if not already done, load the iSCSI PDU offload target driver (chiscsi_t4) by following the
instructions given here.
Chelsio T5/T4 Unified Wire For Linux
ACL_Enable
is set to
iscsi_auth_order=ACL
iscsi_auth_order=CHAP
is part of the device identification sent by an iSCSI target in
script to /sbin directory. Also, disable virtualization, c-state
Next, run the chiscsi_set_affinity.sh script to map iSCSI worker threads
Yes iscsi_auth_order
,
, initiator authorization will be performed at the
, initiator authorization will be performed at
ACL_Enable is set to
CHISCSI
decides whether to
No on a target.
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