II have complete creation and testing of a patch which adds kickstart
support for existing BTRFS subvolumes to be added to the /etc/fstab when
it is created. This patch includes having each existing subvolume
specified using the UUID of it parent BTRFS volume. The patches are
available as part of bugzilla report:
https://bugzilla.redhat.com/show_bug.cgi?id=892747
Each patch can be applied to anaconda in a git repository and used to
create an updates disk for testing. Therefore I have created two
versions of the patch: Fedora 19 with anaconda-19.30.13-1 and Fedora
20-beta-TC2 with anaconda-20.22-1. The updates disk for Fedora 20 was
build on a Fedora 20 TC1+ hardware system and then tested installing on
kvm virtuals with F20-beta-TC2+all-repos.
That is all I can say is ... it works.
I sure would like to see this in Fedora 20!!
As I have currently implemented things, the patch changed things so that
either --noformat or --useexisting can be specified for an existing
BTRFS volume with the same results. For an existing subvolume if
--noformat is specified, then the patch adds code so that that subvolume
will be added to the anaconda created /etc/fstab with the UUID of the
subvolume's BTRFS volume. For an existing subvolume if --useexisting is
specified, then you get exactly the same thing that you get right now
... nothing!
Proposal: As I examined the code, it became obvious to me that it would
be easy to add the equivalent of "reformat" for a BTRFS subvolume by
simply deleting the current subvolume of the specified name and then
recreating it. Not only that but if "--useexisting" is used to specify
that functionality, this would be consistent with what is done for
logical volumes where --noformat is used to mean "leave it alone: and
--useexisting to mean reformat.
I do not like cross-posts so I will be posting a duplicate of this
message to the kickstart mailing list.
Gene
_______________________________________________
Anaconda-devel-list mailing list
Anaconda-devel-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/anaconda-devel-list
