Wednesday, 24 June 2015

Renaming a Cluster and Vserver (SVM) which has Existing Peers

Renaming the Cluster is easy and disruptive to nothing:

OLD::> hostname CLU
Are you sure you want to rename the cluster? {y|n}: y
Info: The cluster name has been changed to CLU.
CLU::>

Renaming the Vserver with existing Vserver peers in place isn’t so easy (hence this blog post):

CLU::> vserver rename -vserver OLDSVM -newname SVM
Error: command failed: Cannot rename a Vserver that is part of inter cluster Vserver peer relationship. Delete the Vserver peer relationship to proceed.
CLU::>

As instructed, delete the vserver peer relationship:

CLU::> vserver peer show -vserver OLDSVM
CLU::> vserver peer delete -vserver OLDSVM -peer-vserver SRCSVM
Error: command failed: Relationship is in use by SnapMirror in local cluster. Use the "snapmirror delete" command to delete the application, then retry the command.
CLU::>

As instructed, delete all the snapmirrors (first recording the details of them):

CLU::> rows 0
CLU::> snapmirror show -source-vserver SRCSVM -destination-vserver OLDSVM -instance
CLU::> snapmirror show -source-vserver SRCSVM -destination-vserver OLDSVM -fields source-path,destination-path,policy,schedule,type
CLU::> snapmirror delete -source-vserver SRCSVM -destination-vserver OLDSVM -destination-volume *
CLU::>

And go onto the source cluster and release all the SnapMirrors:

SRC::> snapmirror release -source-vserver SRCSVM -destination-vserver OLDSVM -destination-volume *

Then delete the vserver peer relationship:

CLU::> vserver peer delete -vserver OLDSVM -peer-vserver SRCSVM

Then rename the SVM:

CLU::> vserver rename -vserver OLDSVM -newname SVM

Then recreate the vserver peer relationship:

CLU::> vserver peer create -vserver SVM -peer-vserver SRCSVM -peer-cluster SRC -applications snapmirror

And go onto the source cluster to complete the peer relation:

SRC::> vserver peer accept -vserver SRCSVM -peer-vserver SVM

The recreate all the SnapMirror relationships and resync:

CLU::> snapmirror create -source-vserver SRCSVM -source-volume {SRCVOL1} -destination-vserver OLDSVM -destination-volume {VOLUMENAME1} -type {TYPE} -schedule {SCHEDULE} -policy {POLICY}

CLU::> snapmirror create -source-vserver SRCSVM -source-volume {SRCVOL2} -destination-vserver OLDSVM -destination-volume {VOLUMENAME2} -type {TYPE} -schedule {SCHEDULE} -policy {POLICY}

and on ...

CLU::> snapmirror resync -source-vserver SRCSVM -destination-vserver OLDSVM -destination-volume *

Note: The lab environment was NetApp Clustered Data ONTAP 8.2.2P1.

1 comment:

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