To moving a volume SnapMirror source volume to another source volume, complete the following steps.
Step
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Action
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1
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Copy the original source to the new source using the following command:
newsource> snapmirror initialize -S
oldsource:oldsourcevol newsource:newsourcevol
Result
This might take some time to finish.
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2
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It is recommended that you make oldsource read-only before continuing.
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3
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Create a manual Snapshot copy on the oldsource filer, using the following command:
oldsource> snap create oldsourcevol common_Snapshot
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4
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Update newsource and destination based on oldsource using the following commands:
newsource> snapmirror update -S oldsource:oldsourcevol
newsource:newsourcevol
destination> snapmirror update -S oldsource:oldsourcevol
destination:destinationvol
Result
The common_Snapshot copy will be on all volumes because all Snapshot copies are mirrored using volume SnapMirror.
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5
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Quiesce and break the SnapMirror relationship between oldsource and destination, and oldsource and newsource, using the following commands:
destination> snapmirror quiesce destinationvol
destination> snapmirror break destinationvol
newsource> snapmirror quiesce newsourcevol
newsource> snapmirror break newsourcevol
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6
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Using an editor, update the /etc/snapmirror.conf file on the destination for the new relationship by replacing the oldsource information with newsource information:
Was
oldsource:oldsourcevol destination:destinationvol
restart=always 0 * * * *
Edit to
newsource:newsourcevol destination:destinationvol
restart=always 0 * * * *
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7
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Establish the new SnapMirror relationship, using the following command:
destination> snapmirror resync -S newsource:newsourcevol
destination:destinationvol
Result
The new SnapMirror relationship will automatically pick the newest Snapshot copy in common to mirror. This will be common_Snapshot.
Note
The SnapMirror relationship will discard any Snapshot copies older than common_Snapshot: namely, the ones used for the last SnapMirror update. This is expected and no data will be lost if you ensured that no new data was added to the oringial source volume during the move.
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8
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Verify that the SnapMirror relationship is resynchronizing, using the following command:
destination> snapmirror status
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