[ Bottom of Page | Previous Page | Next Page | Contents | Index | Library Home |
Legal |
Search ]
Commands Reference, Volume 3
mkvgdata Command
Purpose
Creates a file containing information about a volume
group for use by the savevg and restvg commands.
Syntax
mkvgdata [ -X] [ -m] VGName
Description
The mkvgdata command creates
a file containing information about a volume group for use by the savevg and restvg commands. The information includes
the list of logical volumes, file systems and their sizes, and the volume
group name. One of the following files is created, depending on the type
of volume group:
/image.data |
Created for information about the root volume group (rootvg). The savevg command uses this file to create
a backup image that can be used by the bosinstall routine
to reinstall the volume group to the current system or to a new system. The mkvgdata command overwrites this file if it already exists.
The /image.data file is located in the / directory. |
vgname.data |
Created for information about a user volume group. The vgname variable reflects the name of the volume group. The savevg command uses this file to create a backup image that can be used
by the restvg command to reinstall the user volume group.
The mkvgdata command overwrites this file if it already
exists. The vgname.data file
is located in the /tmp/vgdata/vgname directory, where vgname is the volume group
name. |
The information in either of these files can be edited
by the user before issuing the savevg command.
Flag
-m |
Creates map files that specify the mapping of the logical-to-physical
partitions for each logical volume in the volume group. This mapping can
be used to allocate the same logical-to-physical mapping when the image is
restored. The map file locations are stored in the MAPFILE field in the /image.data file for each logical volume. Sufficient space
would exist in the /tmp file system for map creation
because the installation routines place the maps in the /tmp file system before issuing the mklv command.
For example, for the hd7 logical volume, the location
of the map file is /tmp/vgdata/rootvg/hd7.map. The MAPFILE
field in the /image.data file for the hd7 logical volume is under the entry MAPFILE=/tmp/vgdata/rootvg/hd7.map.
The map files in the backup image are copied after the image.data or vgname.data
files. |
-X |
Expands /tmp if needed. |
vgname |
Name of volume group to backup. |
Files
/image.data |
Created when the volume group is rootvg. |
/tmp/vgdata/vgname/vgname.data |
Created when the volume group is not rootvg
and where vgname is the name of the volume group. |
Related Information
The mkszfile command, restvg
command, savevg command.
[ Top of Page | Previous Page | Next Page | Contents | Index | Library Home |
Legal |
Search ]