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29.5
InForm OS Version 2.2.4 Command Line Interface Reference
EXAMPLES
The following example displays the snapshot update of snapshot virtual volume avvro.:
NOTES
The updatevv command attempts to use the same virtual volume IDs for new snapshots as
the snapshots that they replace so that the new virtual volumes have the same WWNs as
the originals (this might be important for hosts that use the virtual volume WWN to
identify the virtual volume). However, between the removal of the original snapshot and
the creation of the new snapshot it is possible that another virtual volume might have been
created with the same ID causing the creation of the new snapshot to fail. If the
–anyid
option is specified, the command then creates the snapshot with any available ID.
Because new virtual volumes, by default, are assigned the lowest ID available, virtual
volumes that are updated with the
updatevv command should be assigned large IDs
(using the
–i option to the createaldvv command) to reduce the likelihood that their
IDs are taken during the
updatevv command operation.
After the updatevv command is executed, all VLUNs associated with the specified virtual
volume name are removed. The command then updates the snapshots as follows:
If the –ro option is not specified, or if the specified virtual volume name is a read-only
snapshot, the command removes the snapshot, and creates a new snapshot of the same
name and of the same parent.
If the –ro option is specified and the specified virtual volume name is a read/write
snapshot, the virtual volume is removed and its read-only parent is replaced by a new
read-only snapshot of the same name. Then, a new read/write snapshot is created of the
new read-only snapshot.
The command then re-creates all the VLUNs associated with the specified virtual volume
name.
cli% updatevv –f avvro
Updating VV avvro
add ro snap avvro, nvid = 0x110003, parent 0x6c054000, l1ptp 915b4e70,
hatstat 915b4e68
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