Veritas Storage Foundation Intelligent Storage Provisioning 5.0 AdministratorÆs Guide, HP-UX 11i v3, First Edition, May 2008

118 Administering instant snapshots
Creating instant snapshots
Controlling instant snapshot synchronization
Note: Synchronization of the contents of a snapshot with its original volume is
not possible for space-optimized instant snapshots.
The commands in this section cannot be used to control the synchronization of
linked break-off snapshots.
By default, synchronization is enabled for the
vxsnap refresh and restore
operation on instant snapshots. Otherwise, synchronization is disabled unless
you specify the
sync=yes attribute to the vxsnap command.
The following table shows the commands that are provided for controlling the
synchronization manually.
The
vxsnap snapwait command is provided to wait for newly linked break-off
snapshot volumes or volume sets to become ACTIVE, or for reattached snapshot
volumes to reach the SNAPDONE state following resynchronization.
See “Creating and managing linked break-off snapshot volumes” on page 108.
See “Reattaching a linked break-off snapshot volume” on page 112.
Command Description
vxsnap [-g diskgroup ] syncpause vol Pause synchronization of a
volume.
vxsnap [-g
diskgroup ] syncresume vol Resume synchronization of a
volume.
vxsnap [-b] [-g
diskgroup ] syncstart vol Start synchronization of a
volume. The -b option puts the
operation in the background.
vxsnap [-g
diskgroup ] syncstop vol Stop synchronization of a
volume.
vxsnap [-g
diskgroup ] syncwait vol Exit when synchronization of a
volume is complete. An error is
returned if
vol is invalid (for
example, it is a space-optimized
snapshot), or if
vol is not being
synchronized.