Clearing Sdv Changes; Discarding Changes; Guidelines For Downgrading Sdv - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Chapter 21 SAN Device Virtualization
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
There must be at least one SDV-enabled switch that is not a Cisco MDS 9124 Switch between the server
Caution
and the device that are being virtualized. In other words, SDV does not work when initiators and primary
devices are connected to the same Cisco MDS 9124 Switch.

Discarding Changes

At any time, you can discard the uncommitted changes to the running configuration and release the fabric
lock (prior to entering the sdv commit command). If you discard the pending changes, the configuration
remains unaffected and the lock is released.
To discard uncommitted SDV configuration changes and release the lock, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# sdv abort vsan 10

Clearing SDV Changes

If you have performed a SDV task and have forgotten to release 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 changes to the pending database are discarded and the fabric lock
is released.
The pending database is only available in the volatile directory and is subject to being discarded if the
Tip
switch is restarted.
To use administrative privileges and release a locked SDV session, use the clear sdv session command
in EXEC mode.
switch# clear sdv session vsan 2

Guidelines for Downgrading SDV

As of MDS NX-OS Release 4.1(1a), SDV supports failover and fallback attribute configuration.
Downgrading to an earlier release requires you to remove the attribute configurations before
downgrading.
As of SAN-OS Release 3.1(3), SDV supports virtual initiators and LUN zoning. Consequently, in
SAN-OS Releases 3.1(3) and later, if virtual initiators are configured or SDV devices are configured as
LUN-based members of a zone, a configuration check will indicate that downgrading to SAN-OS
Release 3.1(2) may be disruptive and is therefore not recommended.
OL-18084-01, Cisco MDS NX-OS Release 4.x
SDV Requirements and Guidelines
Purpose
Enters configuration mode.
Discards the pending configuration changes.
Cisco MDS 9000 Family CLI Configuration Guide
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