Clearing A Fabric Lock; Cfs Merge Process; Displaying Pending Islb Configuration Changes - Cisco MDS 9000 series Configuration Manual

Chapter 4 Configuring iSCSI
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
To discard the pending iSLB configuration changes and release the fabric lock, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# islb abort

Clearing a Fabric Lock

If you have performed an iSLB configuration task and have not released the lock by either committing
or discarding the changes, an administrator can release the lock from any switch in the fabric. If the
administrator performs this task, your pending changes are discarded and the fabric lock is released.
The pending changes are only available in the volatile directory and are discarded if the switch is
Tip
restarted.
To release a fabric lock, issue the clear islb session command in EXEC mode using a login ID that has
administrative privileges.
switch# clear islb session

CFS Merge Process

When two fabrics merge, CFS attempts to merge the iSLB configuration from both the fabrics. A
designated switch (called the dominant switch) in one fabric sends its iSLB configuration to a designated
switch (called the subordinate switch) in the other fabric. The subordinate switch compares its running
configuration to the received configuration for any conflicts. If no conflicts are detected, it merges the
two configurations and sends it to all the switches in both the fabrics. Each switch then validates the
configuration. This check ensures the following:
•
•
•
If this check completes successfully, the subordinate switch directs all the switches to commit the
merged configuration to running configuration. If any check fails, the merge fails.
The show islb merge status command displays the exact reason for the failure. The first successful
commit request after a merge failure takes the fabric out of the merge failure state.

Displaying Pending iSLB Configuration Changes

You can display the pending configuration changes using the show islb pending command.
switch# show islb pending
iscsi initiator idle-timeout 10
islb initiator ip-address 10.1.1.1
static pWWN 23:01:00:0c:85:90:3e:82
static pWWN 23:06:00:0c:85:90:3e:82
username test1
islb initiator ip-address 10.1.1.2
static nWWN 23:02:00:0c:85:90:3e:82
OL-19525-01,Cisco MDS NX-OS Release 4.2(1)
VSANs assigned to the iSLB initiators are configured on all the switches.
The static WWNs configured for the iSLB initiators are unique and available on all the switches.
The iSLB initiator node names have no conflicts with iSCSI initiators on all the switches.
Purpose
Enters configuration mode.
Commits the iSLB configuration distribution.
Cisco MDS 9000 Family NX-OS IP Services Configuration Guide
Configuring iSLB
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