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Table 1 lists the boot configuration capabilities of the supported operating systems .
Table 1 .
Local Boot and Boot from SAN Configuration Capabilities by Operating System (X signifies available capability)
Boot Time
Load Time
Run Time
RHEL 5 .x, 6 .x – Local Boot
X
X
X
RHEL 5 .x, 6 .x – Boot from SAN
X
X
SLES 11 – Local Boot
X
X
X
SLES 11 – Boot from SAN
X
X
XS – Local Boot
X
X
X
XS – Boot from SAN
X
X
ESX 5 .x – Local Boot
X
ESX 5 .x – Boot from SAN
X
Displaying fnic_max_qdepth Parameter Value
The current and postconfiguration value of the fnic_max_qdepth parameter can be displayed using the following commands .
RHEL 6 .x / SLES11 / XS
1 . To display the current fnic_max_qdepth, run the following command:
# cat /sys/module/parameters/fnic_max_qdepth
2 . To display the current fnic_max_qdepth on a per-LUN basis, which is relevant if the value was changed using the run-time
configuration for newly discovered LUNs, run the following command at the command-line interface (CLI) (install lsscsi if
not already installed):
# lsscsi –l
ESX 5 .x
1 . From the ESX CLI, run the following command (the fnic_max_qdepth parameter will not be listed until it has been explicitly
set per the configuration instructions below):
# cat /etc/vmware/esx .conf |grep fnic
Results:
/vmkernel/module/fnic/options = fnic_max_qdepth=128
2 . From the ESX CLI, run the following esxcli command (the fnic_max_qdepth value will be empty until the fnic_max_qdepth
parameter has been explicitly set per the configuration instructions below):
# esxcli system module parameters list –m fnic
Results:
Name
Type
Value
Description
--------------- ---- ----- ----------------------------------
fnic_max_qdepth
uint 128
Queue depth to report for each LUN
