SnapMirror 7DOT CLI Notes and Procedures: Part 2/2

Procedure 3: How to setup SnapMirror setup (re-rerun)

SRC> vol create vol1 aggr1 10g

SRC> vol options vol1 create_ucode on

SRC> vol options vol1 convert_ucode on

SRC> vol options vol1 nosnap on

SRC> qtree create /vol/vol1/q1

SRC> license add SNAPMIRRORCODE

SRC> options snapmirror.access host=DST

DST> vol create vol1 aggr1 10g

DST> vol options vol1 create_ucode on

DST> vol options vol1 convert_ucode on

DST> vol options vol1 nosnap on

DST> license add SNAPMIRRORCODE

DST> vol restrict vol1

DST> snapmirror initialize -S SRC:vol1 DST:vol1

Procedure 4: How to do a SnapMirror Failover and Failback

i. SnapMirror Failover

Convert the read-only volume replica to a writable file system:

DST> snapmirror break vol1

ii. SnapMirror Failback

On the destination

Enable the source for snapmirror access to the destination:

DST> options snapmirror.access host=SRC

On the source

Resync the relationship:

SRC> snapmirror resync -S DST:vol1 SRC:vol1

SRC> snapmirror status

SRC> snapmirror break vol1

On the destination

Release the reverse relationship:

DST> snapmirror destinations

DST> snapmirror release vol1 SRC:vol1

DST> snapmirror status

On the source

Identify the snapshot copy created by the resync:

SRC> snapmirror status -l

There will be a ‘Broken-off’ relationship and here we want to delete its ‘Base Snapshot’.

SRC> snap delete vol1 SRC(0012345678)_vol1.3

SRC> snapmirror status

On the destination

Reinstate the original SnapMirror relationship:

DST> snapmirror resync -S SRC:vol1 DST:vol1

Confirm y to “Are you sure you want to resync the volume?”

DST> snapmirror status

iii. Testing the relationship is working

On the source

SRC> snap create vol1 test_snap

SRC> snap list vol1

On the destination

DST> snapmirror update -S SRC:vol1 DST:vol1

DST> snap list vol1

Procedure 5: How to use SnapMirror with FlexClone for DR Testing

i. Overview

Source: Create a regular Snapshot copy of the source volume

SRC> snap create vol1 {SNAPSHOT_NAME}

Destination: Trigger a SnapMirror Update

DST> snapmirror update vol1

Destination: Clone volume using the Snapshot copy

DST> vol clone create {CLONE_NAME} -b vol1 {SNAPSHOT_NAME}

Destination: View shared Snapshot copies

DST> snap list vol1

ii. Creating the FlexClone Volume

On the destination

DST> snap list -b vol1

DST> vol clone create clone_vol1 -b vol1 test_snap

DST> vol status clone_vol1

DST> snap list vol1

DST> snapmirror update -S SRC:vol1 DST:vol1

iii. Splitting of the Clone

On the destination

DST> vol clone split estimate clone_vol1

DST> vol clone split start clone_vol1

DST> vol status -v clone_vol1