##(see the SpecSpec for an explanation)

 * Created: 2005-11-02 by FabioMassimoDiNitto
 * Priority: MediumPriority
 * Packages: partman-auto-lvm, partman-auto

== Note for Reviewers ==

The main implementation is already in breezy. This spec is to recollect the bits
that needs to be polished/tested in Dapper. For all the rationale and cosmetic bits please see InstallerVolumeManagement (that are not up for discussion since already approved at UDU).

== Rationale ==

partman-auto-lvm could not be enabled on breezy powerpc because parted upstream did not support lvm.

== Implementation Plan ==

 * Import new upstream version from Debian that is our version plus extra bug fixing.

 * As discussed on debian-boot mailing list, patch partman-auto recipes to tag partitions that can or cannot be on lvm volumes. (http://lists.debian.org/debian-boot/2005/10/msg00842.html)

 * Modify partman-auto-lvm (pal from now on) to parse the new recipes tag (as discussed at the above URL), that as a consequence will increase portability across architectures.

 * Remove size calculation hack that was added in breezy (as discussed on debian-boot mailing list same url as above. Note that the comments are inside the patch and the actual code in breezy/dapper - See:
{{{
# expand_scheme can't cope with decimal and lvm overhead.
# lvm overhead gets calculated properly only using kbytes.
# Switch to that. The worst scenario is that the last partition will be one PE smaller,
# but in the big numbers it's nothing (4MB).
free_size=$(vgs -o vg_free --units k --noheading --nosuffix $VG_name | sed -e 's/\..*//g')

newscheme=''
foreach_partition '
	newmin="${1}000"
	newmed="${2}000"
	if [ "$3" != "1000000000" ]; then
           newmax="${3}000"
	else
	   newmax="$3"
	fi
}}}
in perform_recipe_by_lvm file)

 * Enable pal (partman-auto-lvm) on ppc.

 * Test all of the above.

 * profit.

 Estimated working time from 3 to 8 days.

 * Retest possible GUI implementation since in the last round of tests they were not stable enough to be considered for inclusion.

=== Packages Affected ===

 * `partman-auto-lvm`
 * `partman-auto`
 * probably more

== Outstanding Issues ==

 * We were offering the option to use all the freespace on all devices to create lvm volumes. This option was too buggy and removed from upstream.