10.4;chuvol (change_uids_volume), revision 1.0, 89/01/30
chuvol (salvage_volume) - change uids on volume.
usage: chuvol [-c w|f lv_num]
[-c w|f <cnum>:<d_num> lv_num]
[-a] [-f] [-h] [-n] [-p] [-s] [-t] [-v]
DESCRIPTION
Every node has an identifier recorded in read-only memory that is
internal to the node. This node ID is also used as part of the UID
(unique identifier) of each disk object. The chuvol utility changes all
UIDs on a disk so that the node ID component of each UID matches the ID
of the node to which it is attached.
For proper system performance, the IDs stored on the disks must match the
ID of the node to which a hard disk is attached. chuvol should be run
when a new disk is attached to a node, or when a disk is moved from one
node to another.
When using the Optical Disk Library System (autochanger), always run
chuvol on each side of an optical disk if you transfer it from one
storage slot in the autochanger to another, if you transfer it from one
autochanger to a different autochanger, or if you move the autochanger in
which the disk is stored to a different node.
To change IDs, chuvol establishes a source ID and a target ID. The
source ID is the node ID component of the UID of the disk surface. This
ID is generated when you run invol. The target ID is the node ID, which
is stored in the node's read-only memory. chuvol changes any ID that
matches the source ID to the target ID.
If no options are specified on the command line, then chuvol prompts for
all required arguments and options. Command line options, which can only
be specified to the online version of chuvol (/etc/chuvol), are identical
to those accepted by salvol. See the salvol man page for option
descriptions.
SEE ALSO
For more information about using chuvol with the Optical Disk Library
System, see Using the Optical Disk Library System with Apollo
Workstations (018904-A00).
For additional information about chuvol, see Domain Hardware Utilities
Reference (014881-A00).