Software Distributor Administration Guide (March 2009)

3. Check for software being repackaged.
For each selected product, swpackage checks to see if the product already exists
in the target depot.
• If it does exist, swpackage checks to see which filesets are being added (new
filesets) or modified.
• If it exists and all filesets are selected, swpackage checks to see if any existing
filesets have been obsoleted by the new product.
4. Performing Disk Space Analysis (DSA)
swpackage verifies that the target depot has enough free disk space to package
the selected products.
• If adequate disk space is available for the packaging operation to proceed,
swpackage writes a note to the log file to note the impact on disk space.
• An error results if the package will encroach into the disk’s minfree space.
• An error results if the package phase requires more disk space than is available.
• If you set the enforce_dsa command option to false, swpackage changes
disk space errors to warnings and continues. This lets you cross into the
minfree space to complete a packaging operation.
Phase III: Build
When packaging a product, if the target depot does not exist, swpackage creates it. If
it does exist, swpackage will merge new product(s) into it. For each different version
of the product, a directory is created using the defined product tag attribute and a
unique instance number (instance ID) for all the product versions that have the same
tag.
Before a new storage directory is created, swpackage checks to see if this product
version has the same identifying attributes as an existing product version.
If all the identifying attributes match, you are re-packaging (modifying) an existing
version. Otherwise, swpackage creates a new version in the target distribution.
The packaging process uses an explicit ordering to avoid corrupting the target
distribution if a fatal error occurs. Each product is packaged in its entirety and when
all specified products have been packaged successfully, the distribution’s global INDEX
file is built/rebuilt. Within each product construction, the following order is adhered
to:
1. Check if the product is new or already exists. If it is new, create the product’s
storage directory.
2. For each fileset in the product, copy the fileset’s files into their storage location
(within the product’s storage directory), and create the fileset’s catalog (database
information) files.
3. After the individual filesets, create the product’s informational files (meta-files).
252 Creating Software Packages