Air Cleaner User Manual

sbfwd
Purpose
Forward one or more tape devices to a specific image.
Syntax
 sbfwd -a
-c ″termdev″
-v
-p
-s ″num″ device 
Description
The sbfwd command is used to forward a specified number of images to a tape or
tapes written with the sbwrite program. sbfwd is a low-level command called by
the SysBack restore programs when multiple backups are appended to the same
media.
If a virtual device was used to perform the backup, you can omit the -P and -a
options when specifying a virtual device name to forward. If a virtual device name
was not used, and the backup being read was written with a parallel write-policy,
specify the -P flag and include all devices in the list. If the backup was created
with a sequential write-policy, you can list multiple device names, and the
forwarding continues on the next sequential device when the first one reaches end
of volume.
This command should be used only by experienced users who have created
backups using the sbwrite command outside of the normal SysBack backup
process.
Note: You must specify no-rewind tape device names (such as /dev/rmt0.1) with
this command. Otherwise, the devices are automatically rewound when the
command is complete.
Flags
-a Indicates the device is an auto-loader. You are not prompted to change
volumes, but the forwarding continues automatically when the next volume is
inserted.
-c “termdev”
If the backup contains multiple tape volumes, the volume prompt is sent to the
“termdev” device (such as /dev/tty0).
-v Indicates summary header information should be displayed as each image is
read. This gives the header information of the image that is being skipped.
-P
Indicates the backup was performed with a parallel write-policy, so all
specified devices should be forwarded synchronously. If not specified, a
sequential write-policy is assumed, and only the first device in the list is
forwarded unless the end of media is encountered.
-s “num”
Number of images (backups) to skip
Appendix A. Commands A-69