Users Guide

Table Of Contents
1–Introduction
Linux Feature Limitations
Doc No. TD-000971 Rev. 1
January 29, 2021 Page 8 Copyright © 2021 Marvell
The CLI application starts in a command line window. The QCS CLI window is
similar to and is managed in the same way you manipulate any Windows
command line window. You can resize, minimize, and close the window using the
mouse. When you close the QCS CLI window, the connection to the managed
host is lost.
Linux Feature Limitations
Using QLogic Control Suite CLI on a Linux system has the following limitations on
the available features:
Data center bridging netlink interface (DCBNL) is not supported for inbox
drivers for Red Hat
®
Enterprise Linux
®
(RHEL
®
) 6.2 and SUSE
®
Linux
Enterprise Server (SLES
®
) 11 SP2 and later.
RHEL 5 (Linux kernel version 2.6.18-398 and earlier) and SLES 10 (Linux
kernel version 2.6.16.60 and earlier) do not support data center bridging
exchange (DCBX) due to lack of kernel support.
Red Hat does not support the iSCSI DataDigest login option.
The iSCSI multipath input/output (MPIO) login option is not available
because MPIO for Linux iSCSI operates differently than Windows. Linux
requires that two iSCSI sessions be established first to the same target LUN,
and then the multipaths must be started so the SCSI layer treats the device
mapper disk as one disk. Because these requirements have nothing to do
with the actual iSCSI login procedure, MPIO is not available during login.
SLES 10 (Linux kernel version 2.6.16.60 and earlier) does not support the
iSCSI offload features due to lack of kernel support.
Configuration options are not available if the device interface is down.
The network test, on-chip CPU test, and cable analysis are not currently
supported.
Bandwidth: (QL41000 Series adapters (25G/40G/100G)): for best practice,
set the bandwidth to 0 on storage functions.
The iSCSI ping test may pass or fail based on the real time network traffic
and bandwidth. If few pings are successful and few fail, this limitation could
be expected. If the iSCSI ping test fails repeatedly, this limitation can be an
issue.