[PATCH 4/6] kbase: incrementalbackupinternals: Add section on 'qemu-img bitmap' use

Define what users should look for when wanting to manipulate bitmaps themselves. Later on a patch will turn the bash algorithms into pseudocode for simplicity. Signed-off-by: Peter Krempa <pkrempa(a)redhat.com&gt; --- docs/kbase/incrementalbackupinternals.rst | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/docs/kbase/incrementalbackupinternals.rst b/docs/kbase/incrementalbackupinternals.rst index adc415e282..c8a0a66baa 100644 --- a/docs/kbase/incrementalbackupinternals.rst +++ b/docs/kbase/incrementalbackupinternals.rst @@ -190,6 +190,20 @@ It's reccomended to use ``--output=json`` parameter to work with a machine readable output rather than trying to process the human readable output by scripts. For processing JSON in shell the ``jq`` tool can be used. +``qemu-img bitmap`` command allows modification of block-dirty-bitmaps of an +image. It supports the following operations relevant to this document (see man +page for full list of operations): + +``--add NAME`` + Creates a new bitmap named ``NAME``. Optionally ``-g`` can be used to + specify granularity. + +``--remove NAME`` + Deletes bitmap ``NAME``. + +``--merge SRCBITMAP -b SRCFILE -F SRCFILEFMT DSTBITMAP`` + Merges bitmap ``SRCBITMAP`` from ``SRCFILE`` into ``DSTBITMAP``. + Checking bitmap health ---------------------- -- 2.26.2