Turning off or changing scheduled updates for volumes or qtrees

Why you turn off scheduled updates

You can edit the destination's etc/snapmirror.conf file to change or turn off scheduled updates for a particular volume or qtree if you decide that there is no need to update the destination. For example, you might want to change the time or frequency of scheduled updates if the pattern of use or the configuration of the filers has changed. Or, if you want to use the volume for a different purpose, you can change the destination to a writable volume.

Note
Editing entries in the destination's etc/snapmirror.conf file to turn off scheduled updates does not change the destination to a writable volume. If you want to change the destination to a writable volume or qtree, you use the snapmirror break command to turn the destination into a writable volume or qtree and the snapmirror release command to allow SnapMirror to delete the snapshots it no longer needs on the source. See Converting a destination to a writable volume or qtree and How to release a source from a SnapMirror relationship.

When you can turn off or change scheduled updates

You can edit the destination's etc/snapmirror.conf file to turn off or change scheduled updates at any time, even when data transfer is underway. The destination remains the same as before the transfer. The snapshot taken in the source for the data transfer remains, but it can be deleted and replaced by a new snapshot the next time the destination is updated.

Changing scheduled updates for one volume or qtree

To change scheduled updates for one volume or qtree, complete the following step.

Step	Action
1	In the destination's /etc/snapmirror.conf file, edit the destination volume or schedule information to specify the configuration you want. Example Original update schedule: filerA:vol0 filerA:vol1 - 0 23 * 1,3,5 filerA:vol1 filerB:vol6 - 0 23 * 1,3,5 Changed update schedule: filerA:vol0 filerA:vol2 - 0 23 * 1,3,5 filerA:vol1 filerB:vol6 - 0 23 * 2,4,6

Step

Action

In the destination's /etc/snapmirror.conf file, edit the destination volume or schedule information to specify the configuration you want.

Example

Original update schedule:

filerA:vol0 filerA:vol1 - 0 23 * 1,3,5

filerA:vol1 filerB:vol6 - 0 23 * 1,3,5

Changed update schedule:

filerA:vol0 filerA:vol2 - 0 23 * 1,3,5

filerA:vol1 filerB:vol6 - 0 23 * 2,4,6

Turning off scheduled updates for one volume

To turn off scheduled updates for one volume or qtree, complete the following step.

Step	Action
1	Either delete the entry in the /etc/snapmirror.conf file or change the entry by Commenting out the entry by preceding it with a pound sign (#) Example filerA:vol0 filerA:vol1 - 0 23 * 1,3,5 filerA:vol1 filerB:vol6 - 0 23 * 1,3,5 #filerB:vol1 filerC:vol2 - 0 23 * 1,3,5 Putting a dash (-) in one of the schedule fields (minute/hour/dayofmonth/dayofweek) Example filerA:vol0 filerA:vol1 - 0 23 * 1,3,5 filerA:vol1 filerB:vol6 - 0 23 * 1,3,5 filerB:vol1 filerC:vol2 - - 23 * 1,3,5

Step

Action

Either delete the entry in the /etc/snapmirror.conf file or change the entry by

Commenting out the entry by preceding it with a pound sign (#)

Example

filerA:vol0 filerA:vol1 - 0 23 * 1,3,5

filerA:vol1 filerB:vol6 - 0 23 * 1,3,5

#filerB:vol1 filerC:vol2 - 0 23 * 1,3,5

Putting a dash (-) in one of the schedule fields (minute/hour/dayofmonth/dayofweek)

Example

filerA:vol0 filerA:vol1 - 0 23 * 1,3,5

filerA:vol1 filerB:vol6 - 0 23 * 1,3,5

filerB:vol1 filerC:vol2 - - 23 * 1,3,5

Note
Deleting or commenting out a destination or putting a dash in one of the schedule fields of a destination in the /etc/snapmirror.conf file does not prevent you from performing manual updates to that destination.