Users Guide

4–NVM Express over Fibre Channel
Limitations and Known Issues
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Limitations and Known Issues
The following Linux and Windows limitations and known issues affect the
installation and configuration of FC-NVMe.
Linux
For Linux operating systems, Marvell recommends that you disconnect all
FC-NVMe devices prior to unloading the driver. Refer to the procedure in
Unloading and Reloading the Linux Driver.
Windows
Windows FC-NVMe does not support point to point (also called N2N) direct attach
to Target/LUN configuration. It does support fabric configuration through FC
Switch fabric.
Unloading and Reloading the Linux Driver
Follow the instructions in this section to unload and reload the Linux driver.
To unload and reload the Linux driver:
1. List all the FC-NVMe connected target controllers by issuing the following
command:
# ls /dev/nvme* | grep -E nvme[0-9]+$
NOTE
To support formatting of an FC-NVMe drive on Windows, you may need to
add the following Windows Registry entry for some OEM storage:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\
ql2300\Parameters\Device]"DriverParameter"="ts=1"
NOTE
By default, NVMe is disabled. To enable NVMe on Windows, you may need
to add the following Windows Registry entry for some OEM storage devices.
1.To enable NVMe, navigate to:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Ql
2300\Parameters\Device
2.Double click on DriverParameter:REG_SZ
3.Look for
DriverParameter:REG_SZ:nvme=1
4.If the string nvme=1 does not exist, append nvme=1 to the end of string.