DapperInstallerVolumeManagement

Revision 12 as of 2008-08-06 16:26:10

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