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Further Information
Backing Up and Restoring UNIX Specifics
Appendix A A-5
# snapping the same FS will cause the Pre-exec script to
fail and
# a DA to abort
#
# 2) an attempt to mount an already mounted snapshot FS,
# snapping some other FS will cause a warning to be
generated,
# script to fail and a DA to abort
#
# 3) a synchronization with the Post-exec script should
be also
# provided because the snapshot FS must not be unmounted
while
# there is other DA reading from the FS.
#
SNAPPED_FS=$1
SNAPSHOT_FS=$2
MOUNT_POINT=$3
mount -F vxfs -e -o snapof=$SNAPPED_FS $SNAPSHOT_FS
$MOUNT_POINT
#
# end SnapMount.sh
#
The template below can be used to unmount a VxFS system.
Example A-2 Post- exec Script Template
# SnapUnmount.sh
#
# Unmounting snapshot filesystem (Post-exec shell
script)
#
# Script requires 1 parameter:
# - a mount point directory of the snapshot FS
# or